• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method and a device for cooling at least one hot load (12) on board a vehicle such as an aircraft comprising at least a first heat exchanger (11) associated with the hot load for the cool down; at least one second heat exchanger (20) for cooling the hot heat transfer fluid from the first heat exchanger with outside air; and at least one third heat exchanger (24) arranged to exchange a heat flow between the heat transfer fluid and at least one on-board thermal accumulator (25), fed either directly in which it receives hot heat transfer fluid from the first heat exchanger to cool it, in the reverse mode in which it receives cold heat transfer fluid to cool the heat accumulator.
    公开号:FR3051894A1
    申请号:FR1600875
    申请日:2016-05-30
    公开日:2017-12-01
    发明作者:Guillaume Galzin；Olivier Juvin
    申请人:Liebherr Aerospace Toulouse SAS；
    IPC主号:
    专利说明:

    The invention relates to a method and a device for cooling at least one hot load aboard a vehicle. a vehicle such as an aircraft, comprising a fluid circulation loop of a coolant.
    Throughout the text, we adopt the following terminology: - heat transfer fluid: any fluid likely to carry thermal energy (calories or firigories) and to exchange thermal energy (calories or frigories) with an external environment; heat exchanger: any device for transferring thermal energy (calories or frigories) between a heat transfer fluid and another component by conduction and / or convection eEou radiation by contact of the device with the coolant and with said other component; - heat exchange device: any device for transferring thermal energy (calories or frigories) between two components; a heat exchange device may comprise one or more heat exchanger (s), in parallel or in series, optionally with one or more fluid loop (s), in parallel or in series, - vehicle: any type of machine mobile to carry a payload, and in particular can be selected from aircraft (passenger aircraft, cargo aircraft, fighter aircraft, helicopters, drones ...), spacecraft, vehicles of land transport (road or rail vehicles ...), water or maritime transport vehicles (ships, submarines ...).
    Various systems for cooling hot charges such as electrical and / or electronic circuits of a vehicle, comprising a two-phase (vapor-cycle) fluid loop comprising one or more compressors, condensers, expansion valves, evaporators, and circulation lines of a coolant.
    It is also known that it is possible to use the outside air of the vehicle as a cold source for cooling hot loads on board a vehicle.
    It has also been proposed to use a fuel tank, or water, or other embedded fluid, or even a circulation loop of such embedded fluid, as a heat accumulator forming a source cold embedded. Nevertheless, the problem then arises of controlling the temperature of this heat accumulator, in particular in the case of a fuel tank. To do this, it is necessary to provide a specific cooling device for the thermal accumulator, for example an exchanger for cooling the heat accumulator from the air outside the vehicle, directly or via a fluid circulation loop of another heat transfer fluid. Such a specific cooling device of the heat accumulator is however heavy, bulky and expensive, which may even call into question the interest that can have the use of the heat accumulator as a cold source for cooling loads in a vehicle such as an aircraft. In addition, it does not allow efficient cooling of the heat accumulator when the vehicle is stopped.
    In this context, the invention aims to optimize the use of an on-board heat accumulator as a cold source for cooling at least one hot load on board a vehicle such as an aircraft. particularly to provide a method and a cooling device of reduced mass, reduced size and reduced energy consumption. The invention also aims to achieve these objectives at lower cost. The invention aims more particularly at enabling the combined and optimized use of air outside the vehicle and at least one on-board heat accumulator for cooling at least one hot load on board a vehicle such as an aircraft. . The invention aims to provide a method and a cooling device for any hot load on board a vehicle. It is more particularly intended to propose a method and a device for cooling at least one hot load selected from the group consisting of electrical devices (for example a source of electrical power supplying an electrical network on board the vehicle) and and / or electronic and / or computer, air compartments to cool, cabin air, liquid volumes (including selected from the volumes of fuel, water volumes and volumes of heat transfer liquids distinct from water and fuel). It aims in particular to provide a method and a device for cooling at least one hot load formed of an electrical and / or electronic device, in particular a source of electrical power supply of an electrical network on board a vehicle. The invention therefore relates to a method of cooling at least one hot load on board a vehicle such as an aircraft comprising a fluid circulation loop for a heat transfer fluid in which: for each hot charge to be cooled, a flow of said heat transfer fluid, said cold coolant flow, is introduced into a heat exchanger, said first heat exchanger, a first heat exchange device associated with the hot load so as to transfer calories from the latter to the coolant, cool the hot load and produce a flow of said heat transfer fluid, said flow of hot heat transfer fluid, at a temperature greater than that of said cold coolant flow, - at least a portion of said flow of hot heat transfer fluid from at least one first heat exchanger is introduced into at least one heat exchanger, called second heat exchanger, of a second heat exchange device arranged to be able to cool it by air outside the vehicle, - a flow of said coolant is introduced into at least one heat exchanger, said third heat exchanger, a third heat exchange device arranged to be able to exchange a heat flow between this flow of said heat transfer fluid and at least one heat accumulator, separate from said heat transfer fluid, on board the vehicle, when cooling need criteria are fulfilled, at least one such-every-other third heat exchanger is supplied according to a circulation mode, said direct mode, in which it receives at least a portion of said hot heat transfer fluid flow from at least one of each first heat exchanger, said third heat exchanger device; corresponding heat exchange (i.e. including this third heat exchanger) transferring calories from is this hot heat transfer fluid to the heat accumulator so as to cool said heat transfer fluid, - when said cooling requirement criteria are not met, at least im such -notamment each- third heat exchanger is fed in a circulation mode , said reverse mode, in which it receives a flow of said heat transfer fluid -particularly at a temperature below the temperature of the heat accumulator- and the third corresponding heat exchange device (that is to say comprising this third exchanger heat transfer) transfers calories from the heat accumulator to this heat transfer fluid so as to cool the heat accumulator. The invention also extends to a cooling device for implementing a cooling method according to the invention. The invention therefore also relates to a device for cooling at least one hot load on board a vehicle such as an aircraft comprising a fluid circulation loop of a coolant comprising: - ρονιΓ each hot charge to be cooled, a first heat exchange device associated with the hot load so as to be able to transfer heat from the latter to a flow rate of said heat transfer fluid, said cold coolant flow, introduced into a heat exchanger, said first heat exchanger, this first heat exchange device, cooling the hot load and produce a flow rate of said heat transfer fluid, said flow of hot heat transfer fluid, at a temperature greater than that of said flow of cold coolant fluid, - at least a second heat exchange device arranged to be able to cool by air outside the vehicle at least a portion of said flow of heat transfer fluid r hot from at least a first heat exchanger and introduced into a heat exchanger, said second heat exchanger, this second heat exchange device, - at least a third heat exchange device arranged to be able to exchange a thermal flow between at least one heat accumulator, separate from said heat transfer fluid, on board the vehicle and a flow rate of said heat transfer fluid introduced into a heat exchanger, called third heat exchanger, of this third heat exchange device, - for each third heat exchanger, a circuit, called inversion circuit, comprising a controlled inversion device comprising at least one controlled valve, said inversion circuit and the controlled inversion device being arranged to be able to circulate said coolant in the third heat exchanger according to a circulation mode chosen from: O a direct mode in the the third heat exchanger receives at least a portion of said flow of hot heat transfer fluid from at least a first heat exchanger - especially at a temperature higher than that of the heat accumulator - and the third heat exchange device corresponding transfers heat from said hot heat transfer fluid to the heat accumulator so as to cool the hot coolant, and ο an inverse mode in which the third heat exchanger receives a flow of said heat transfer fluid - in particular a heat transfer fluid flow at a temperature lower than the temperature of the heat accumulator- and the third corresponding heat exchange device transfers calories from the heat accumulator to the heat transfer fluid so as to cool the heat accumulator.
    In a method and a cooling device according to the invention, the fluid loop is therefore partially reversible, only the operation of each third heat exchanger and the corresponding inversion circuit being reversible. In particular, it should be noted that the entire fluid loop according to the invention does not have to be reversible, unlike some known thermal management systems used in fixed installations, in particular for the heating or cooling of premises . Indeed, said fluid loop can cool each hot load in both direct mode and reverse mode.
    In a method and a cooling device according to the invention, each first heat exchange device may consist solely of a simple heat exchanger, that is to say a first heat exchanger. Nothing prevents alternatively to provide at least a first heat exchange device comprising a plurality of heat exchangers, in series or in parallel, and / or one or more fluid loop (s) (monophasic or diphasic) intermediate (s).
    In a method and a cooling device according to the invention, each second heat exchange device may consist solely of a simple exchanger, that is to say a second heat exchanger. Nothing prevents alternatively to provide at least a second heat exchange device comprising a plurality of heat exchangers, in series or in parallel, and / or one or more fluid loop (s) (monophasic or diphasic) intermediate ( s).
    In a method and a cooling device according to the invention, each third heat exchange device may consist solely of a simple exchanger, that is to say a third heat exchanger.
    Nothing prevents alternatively to provide at least a third heat exchange device comprising a plurality of heat exchangers, in series or in parallel, and / or one or more fluid loop (s) (monophasic or diphasic) intermediate ( s). The invention applies with a monophasic fluid loop, that is to say comprising a coolant whose physical state does not change during the thermodynamic cycle implemented during the circulation in the fluid loop. This monophasic heat transfer fluid may be a liquid or a gaseous composition.
    Nevertheless, it applies advantageously to the case of a two-phase fluid loop, that is to say comprising a heat transfer fluid capable of being at least partially in the liquid state and at least partially in the vapor state, the fluid loop being adapted so that the physical state of the coolant changes during the thermodynamic cycle performed during the circulation in the fluid loop. A two-phase heat transfer fluid that can be used in a method and a cooling device according to the invention can be chosen for example from the group consisting of two-phase refrigerants (such as hydrofluorocarbons (in particular R245fa, RI34a, R236fa) and hydrofluoroolefins (in particular HF01234ze, HF01234yf and HF02345zde), carbon dioxide, air, and monophasic liquids (such as EGW (aqueous ethylene glycol compositions), PGW (aqueous propylene glycol compositions coolanol ®, and polyalphaolefms PAO).
    Moreover, the flow rate of said heat transfer fluid supplying a third heat exchanger in reverse mode must be chosen to have a temperature lower than that of the heat exchanger so as to be able to cool the latter. This may be in particular at least a portion of said flow of cold heat transfer fluid introduced into a first heat exchanger.
    In certain advantageous embodiments in reverse mode, each third heat exchanger receives a heat transfer fluid flow rate, called cooled coolant flow rate, from a heat transfer fluid reservoir via an expansion device (expansion valve , expansion orifice, capillary tube, turbine ...). Thus, in these embodiments, a device according to the invention comprises a heat transfer fluid reservoir and at least one expansion device interposed between the heat transfer fluid reservoir and a third heat exchanger and arranged to deliver, in reverse mode, to this third heat exchanger a coolant flow rate, said coolant coolant flow rate, at a lower temperature than that of each heat accumulator associated with the third heat exchanger.
    Moreover, in a method and a cooling device according to the invention, said criteria of need for cooling can be chosen from among various criteria, according to needs and applications. At least one third heat exchanger is fed in reverse mode when it is not necessary to use this third heat exchanger to cool the heat transfer fluid, the cooling requirements of each hot charge to be cooled being sufficiently low to allow the cooling of the heat exchanger. use of this third heat exchanger to cool each heat accumulator associated with the third thermal device comprising this third heat exchanger.
    The transition from the direct mode to the reverse supply mode of each third heat exchanger can be performed at least partly manually, for example on command of an operator. Nevertheless, preferably, this passage is performed entirely automatically, on command of a control unit of the cooling device. Thus, a cooling device according to the invention advantageously comprises a control unit adapted to be able to control at least one-in particular each inversion device: in the direct mode when cooling requirement criteria are fulfilled, in inverse mode when said cooling requirement criteria are not met.
    In certain advantageous embodiments of a process according to the invention: said cooling requirement eriters comprise at least one criterion, said temperature criterion, according to which the temperature of at least one hot load is greater than a maximum temperature permissible, - the temperature of each hot load for which at least one temperature criterion is defined is measured, - at least one such-in particular every third heat exchanger is supplied with: O in direct mode when the measured temperature of each hot load fulfills each temperature criterion, :: O in inverse mode at least when the measured temperature of each hot load does not meet each temperature criterion.
    In these embodiments, the control unit of a device according to the invention is also advantageously adapted to: - receive temperature measurement signals of each hot load for which at least one temperature criterion is defined, - check if each temperature criterion is fulfilled, - control at least one such -in particular each inversion device: O in direct mode when the measured temperature of each hot charge meets each temperature criterion, O in inverse mode at least when the temperature measured of each hot load does not meet each temperature criterion.
    At least one temperature criterion is a temperature of at least one of each hot charge greater than a maximum allowable temperature. Indeed, if the temperature of a hot load is greater than such a maximum permissible temperature, it means that the cooling needs are relatively high, so that at least a third heat exchanger - especially if necessary every third heat exchanger heat-is fed in direct mode so that the cooling device provides a greater cooling capacity -in particular maximum-. On the contrary, if the temperature of each hot charge is not greater than such a maximum permissible temperature, the cooling requirements are less important, and it is possible not to use at least one third direct-mode heat exchanger for the cooling, and feed it in reverse mode to cool on the contrary this third heat exchanger. Said maximum admissible temperature which can be predetermined, or conversely determined dynamically, in particular in real time, by a logical unit. Said maximum permissible temperature can be determined for each hot load to be cooled, depending on the cooling requirements of this hot load. It can therefore vary from one hot load to another.
    Alternatively or in combination, the speed of a rotary compressor of the fluid loop can be used as a cooling requirement criterion. Indeed, in some embodiments of a cooling device according to the invention, the fluid loop comprises a rotary compressor whose rotational speed is controlled by the control unit so as to control the temperature of each hot load. However, when the speed of the compressor is less than its maximum speed, it means that it remains a possibility to use a flow portion of the heat transfer fluid of the fluid loop for cooling a heat accumulator. Thus, in these embodiments, the control unit is adapted to control at least one such-in particular each inversion device: in the direct mode when the speed of a compressor of the fluid loop is greater than a value predetermined, - in reverse mode at least when the compressor speed of the fluid loop is less than said predetermined value.
    It should also be noted that it is possible to envisage any logical combination of power selection of each third heat exchanger, depending on the cooling requirements, depending on the architectures and combinations of the different heat exchangers and the applications. . In particular. selecting a direct mode feed of a third heat exchanger, or a predetermined set of third heat exchangers, or all third heat exchangers, can be triggered if the temperature of a single heat exchanger hot load exceeds a predetermined threshold value, or if the temperature of a predetermined set of hot charges exceeds a predetermined threshold value for each of these hot charges, or if the temperature of all the hot charges to be cooled exceeds a predetermined threshold value for each of these hot loads. Similarly, the selection of a reverse mode feed of a third heat exchanger, or a predetermined set of third heat exchangers, or all third heat exchangers, can be triggered if the temperature of the heat exchanger a single hot load is less than a predetermined threshold value, or if the temperature of a predetermined set of hot charges is lower than a predetermined threshold value for each of these hot charges, or if the temperature of the entirety of the hot charges to cool is below a predetermined threshold value for each of these hot charges.
    Also, other criteria than the temperature of at least one hot load representative of the cooling requirements can be used, alternatively or in combination, to select the supply in direct mode or in reverse mode of each third heat exchanger: for example, the intensity of an electric current consumed by at least one hot spot; an operating parameter of at least one hot load representative of the fact that the latter has more important cooling requirements; the temperature of the outside air; the available flow of outdoor air; the condensation pressure; the temperature of the thermal accumulator ...
    Similarly, the power supply selection logic in direct mode or in reverse mode of each third heat exchanger can be subject to numerous variants and can be more or less complex: it can be a servo closed loop circuit comprising one or more loop (s) for performing appropriate, proportional and / or integral and / or derivative or other regulation. The invention applies to all kinds of architectures and combinations of at least one first heat exchange device comprising at least one first heat exchanger, at least one second heat exchange device comprising at least one second heat exchanger and at least one third heat exchange device associated with at least one onboard heat accumulator and having at least one third heat exchanger. For example, the same third heat exchange device is associated with a thermal accumulator or with several thermal accumulators; a plurality of third heat exchange devices are associated with the same thermal accumulator, or with several thermal accumulators; a same first heat exchanger is associated with a single hot charge or a plurality of separate hot charges; the fluid loop may comprise im single first heat exchanger; on the contrary, several first heat exchangers can be incorporated in the fluid loop, in parallel or in series; the fluid loop may comprise a single second heat exchanger; on the other hand, several second heat exchangers can be incorporated in the fluid loop, in parallel or in series, etc.
    In certain possible embodiments of a method according to the invention for each first heat exchanger associated with a hot charge, a single third heat exchanger is arranged to be able to receive, in direct mode, a portion of the flow of hot heat transfer fluid from this first heat exchanger. As a variant or in combination, for each second heat exchanger, a single third heat exchanger is arranged to receive, in direct mode, at least a portion of said hot heat transfer fluid flow from at least a first heat exchanger and at least a portion of which is delivered to this second heat exchanger.
    Moreover, the inversion circuit and the inverted reversing device of each third heat exchanger can be subject to many different variant embodiments as long as they allow the selection of the feed mode of the third heat exchanger. heat in direct mode or in reverse mode.
    In certain possible embodiments according to the invention, at least one controlled inversion device -in particular each controlled inversion device of at least one third heat exchanger comprises a controlled three-way valve having: an output connected to a pipe downstream of at least a first exchanger -particularly to an outlet pipe of at least a first exchanger and / or upstream of at least one stage of a compressor of the fluid loop connected to this outlet pipe; - an inlet connected to a pipe connected to a second heat exchanger - in particular to an inlet pipe of a second heat exchanger arranged parallel to the third heat exchanger, or to an outlet pipe; a second heat exchanger arranged in series upstream of the third heat exchanger; an inlet / outlet connected to a first mouth of the third heat exchanger, and control unit is connected to the three-way valve and adapted to: - in direct mode connect the inlet of the three-way valve to its inlet / outlet which serves as an outlet for a flow of said heat transfer fluid taken from the pipe of input of the second heat exchanger, - in inverse mode connect the input / output of the three-way valve to its output, the input / output acting as input for a flow of said heat transfer fluid from the third heat exchanger, said heat transfer fluid from the outlet of the three-way valve being mixed with said heat transfer fluid of said outlet pipe.
    Nothing, however, prevents any other archirtecture of realization of such an inversion device, said three-way valve being for example replaced by two controlled two-way valves, one in each pipe connected to the first mouth of the third heat exchanger. heat. Moreover, the three-way valve (or said two-way valves) of the reversing device do not have to be proportional valves, and may be all-or-nothing solenoid valves.
    In addition, advantageously and according to the invention, the third exchanger comprises a second connected mouth: - in direct mode to an outlet pipe of at least one such second heat exchanger, said heat transfer fluid from the second mouth of the third exchanger being mixed with said heat transfer fluid of this outlet pipe, - in inverse mode with a device for expanding a flow rate of said heat transfer fluid - in particular with an expansion device (expansion valve, expansion orifice, capillary tube, turbine, etc. ) adapted to deliver the coolant to a temperature below the temperature of the heat accumulator.
    In certain simplified embodiments of a method and a cooling device according to the invention, the fluid loop comprises a single second heat exchanger and a third heat exchanger arranged in parallel between a first node of the fluid loop. receiving said flow of hot heat transfer fluid from each hot load to be cooled -in particular a node downstream of a compressor receiving said flow of hot heat transfer fluid from each first heat exchanger and delivering hot heat transfer fluid compressed on this node and m second node of the fluid loop receiving the flow of said cooled heat transfer fluid delivered by the second heat exchanger. The third heat exchanger can be associated with a single onboard heat accelerator, for example formed of a fuel tank. The first node of the fluid loop is connected to an input of a controlled three-way valve whose input / output is connected to a first mouth of the third heat exchanger. The inversion circuit comprises a pipe connecting an outlet of the three-way valve to another node of the fluid loop on a pipe receiving said flow of hot heat transfer fluid of each first heat exchange so as to mix the flow of said heat transfer fluid outgoing the third heat exchanger in inverse mode to said flow of hot heat transfer fluid. The inversion circuit also comprises a pipe connecting, in inverse mode, an expansion device - in particular a controlled expansion valve - to a second mouth of the third heat exchanger, this expansion device being itself supplied with heat transfer fluid to from a heat transfer fluid reservoir. The second node of the fluid loop is connected to an inlet of the coolant reservoir. The second node is connected to the second mouth of the third heat exchanger via a valve (or a controlled valve) arranged to prohibit the circulation of the coolant from the second node to the second mouth of the third heat exchanger. heat when said expansion valve is controlled in reverse mode.
    In a method and a device according to the invention, each thermal accumulator associated with a third heat exchange device may be chosen from any thermal accumulator on board the vehicle, distinct from said heat transfer fluid of the fluid loop, and having a thermal inertia sufficient. In particular, in some embodiments, each heat accumulator associated with a third heat exchange device is selected from the group consisting of liquid tanks, gas reservoirs, phase change material tanks (liquid / gas, or solid / liquid, or solid / gas), solid parts, and their combinations. In particular, such a thermal accumulator can be chosen from a fuel tank of a vehicle engine, a vehicle water tank, a solid solid part (for example of the structure or chassis of the vehicle), or a device specific thermal accumulation exclusively dedicated to the thermal storage function (for example a tank of material with liquid / gas phase change or liquid / solid (for example a wax)) or other. In a third heat exchange device, nothing prevents the provision that at least one intermediate fluid loop (for example a fuel circuit of the vehicle, the water circuit of the vehicle, etc.) is interposed between said third heat exchanger. of heat and each thermal accumulator associated with the third heat exchange device. The invention extends to a vehicle characterized in that it comprises at least one device according to the invention for cooling at least one hot load on board the vehicle. A vehicle according to the invention may in particular be chosen from aircraft (passenger aircraft, cargo aircraft, helicopters, drones, etc.), spacecraft, land transport vehicles (road vehicles or vehicles). rails ...), water or maritime transport vehicles (ships, submarines ...). The invention extends in particular advantageously to an aircraft characterized in that it comprises at least one device according to the invention for cooling at least one hot load on board the aircraft. The invention thus makes it possible, on the one hand, to dynamically vary the cooling capacities according to the cooling requirements of each hot load on board the vehicle, by using or not one or more heat accumulator (s). embedded (s) by supplying at least a third heat exchanger in direct mode, in addition to cooling the heat transfer fluid of the fluid loop by outside air through each second heat exchanger. The partial reversibility of at least one third heat exchanger of the fluid loop also makes it possible to cool each heat accumulator associated with this third heat exchanger in a simple, economical, low weight and low volume manner. The invention therefore makes it possible to simultaneously manage the temperature of each hot charge and the temperature of each thermal accumulator with a single fluid loop. It is not necessary to provide cooling of each heat accumulator by outside air, nor a specific device designed for this purpose. In addition, it is possible to cool each hot load and each heat accumulator while the vehicle is stationary, especially when it is on the ground in the case of an aircraft. The invention also relates to a method and a cooling device and a vehicle characterized in combination by all or some of the characteristics mentioned above or below. Other objects, features and advantages of the invention will appear on reading the following non-limiting description of one of its embodiments and which refers to the appended figures in which: FIG. 1 is a diagram functional block diagram of an embodiment of a cooling device according to the invention, - Figure 2 is a block diagram showing the functional cooling device of Figure 1 with the third heat exchanger fed in direct mode, - the FIG. 3 is a functional block diagram showing the cooling device of FIG. 1 with the third heat exchanger fed in inverse mode; FIG. 4 is a functional block diagram of another embodiment of a cooling device according to FIG. the invention.
    The device according to the invention for cooling hot charges on board a vehicle such as an aircraft shown in the figures comprises a first heat exchanger 11 associated with at least one hot charge 12 to be cooled so as to be able to transfer calories from the hot load 12 to a coolant circulating in a fluid circulation loop in which the first heat exchanger 11 is incorporated.
    Preferably, the heat transfer fluid and the fluid loop are of said two-phase type, that is to say are arranged such that the coolant is in the liquid state in certain portions of the fluid loop in which it is at a relatively low temperature, in the gaseous state in certain portions of the fluid loop in which it is at a relatively high temperature, and in the liquid / gas state in certain portions of the fluid loop. In the figures, the letter L placed next to a pipe means that the heat transfer fluid is in the liquid state in the pipe; the letter G means that the coolant is in the gaseous state; the letter D means that the heat transfer fluid is in the two-phase liquid / gas state.
    The fluid loop comprises a reservoir 13 of heat transfer fluid in the liquid state. Between the reservoir 13 and an inlet of the first heat exchanger 11, the fluid loop comprises an expansion valve 14 connected to the reservoir 13 via a pipe 15 and to an inlet of the first heat exchanger 11 via a pipe 16. The valve 14 of detent allows on the one hand to relax the heat transfer fluid by partially pass to the gaseous state and cooling it, on the other hand to adjust the output flow of the valve 14 of relaxation. The output of the expansion valve 14 thus delivers a flow of low temperature coolant at low temperature, called cold coolant flow, at the inlet of the first heat exchanger 11.
    In the case of a two-phase fluid loop, the first heat exchanger 11 is an evaporator, the coolant evaporating and passing completely in the gaseous state as it passes through the first heat exchanger 11, under the effect of calories brought by the charge 12 hot. The output of the first heat exchanger 11 thus delivers a heat transfer fluid flow in the gaseous state and reheated (at a temperature higher than that of the cold coolant flow at the inlet of the first heat exchanger), said flow of fluid cool heat.
    The output of the first heat exchanger 11 is connected by a pipe 18 to a motorized compressor 17. The compressor 17 delivers a flow of gaseous hot heat transfer fluid at a higher pressure and a higher temperature, and has an output connected via a line 19 to an inlet of a second heat exchanger 20 via an opto-solenoid valve 21. allowing if necessary to adjust the flow of heat transfer fluid delivered to the inlet of the second heat exchanger 20.
    The second heat exchanger 20 is associated with a stream 22 of air outside the vehicle, at a temperature much lower than the temperature of the flow of hot heat transfer fluid supplied to the inlet of the second heat exchanger 20. This external air flow 22 may be an air flow generated by the movement of the vehicle (dynamic air or "ram air") and / or by an on-board ventilator when the vehicle is stationary.
    In the case of a two-phase fluid loop, the second heat exchanger 20 is a condenser and delivers an output of coolant fluid cooled and in the liquid state. The outlet of the second heat exchanger 20 is connected by a pipe 23 to the inlet of the reservoir 13 of heat transfer fluid in the liquid state.
    The fluid loop comprises a third heat exchanger 24 connected in parallel with the second heat exchanger 20, this third heat exchanger 24 being associated with a thermal accumulator 25, distinct from the coolant, and on board the vehicle. Such a third heat exchanger 24 may be provided for various reasons, in particular to increase the cooling capacity of the loop (the cooling by the outside air being necessarily limited in terms of capacity and / or availability) and / or for reasons security and / or integration or other.
    A first mouth 27 of the third heat exchanger 24 is connected by a pipe 26 to the pipe 19 connected to the outlet of the compressor 17 so as to receive at least a portion of the flow of hot heat transfer fluid delivered by the compressor 17. The intersection of line 26 with line 19 forms a first node 28 of the fluid loop. A three-way valve 29 is interposed on the pipe 26 between the first node 28 and the first mouth 27 of the third heat exchanger 24 so as to allow in particular to adjust the flow of heat transfer fluid supplied to the first mouth 27 of the third exchanger 24 heat.
    The heat transfer fluid and the heat accumulator are chosen so that the hot heat transfer fluid delivered by the compressor 17 can be cooled by the thermal accumulator, the latter being at a mean temperature lower than the temperature of the hot heat transfer fluid delivered by the compressor 17, in particular to ensure the evacuation of the heat transfer fluid when the second heat exchanger is insufficient to ensure all of this cooling. The thermal accumulator is also chosen so as to have a heat capacity as large as possible, and a thermal effusivity as large as possible, so as to absorb as much as possible the heat of the heat transfer fluid through the third heat exchanger 24 heat, and to limit the temperature variations of the thermal accumulator and the coolant.
    For example, the thermal accumulator is selected from the group consisting of liquid tanks, gas tanks, phase change material tanks, solid parts, and combinations thereof. In particular, such a thermal accumulator can be chosen from a fuel tank of a vehicle engine, a vehicle water tank, a solid solid part (for example of the structure or chassis of the vehicle), or a device specific thermal accumulation exclusively dedicated to the thermal storage function (for example a tank of liquid / gas phase change material).
    The third heat exchanger 24 comprises a second mouth 30 opposite the first mouth 27, the heat transfer fluid flowing in the third heat exchanger 24 between these mouths 27, 30 so as to be able to exchange heat flow with the accumulator 25 thermal. The second mouth 30 of the third heat exchanger 24 is connected to the pipe 23 extending between the outlet of the second heat exchanger 20 and the reservoir 13, via a pipe 31, the intersection of these pipes 23, 31 forming a second node 32 of the fluid loop. In this way, a coolant flow rate cooled by the third heat exchanger 24 by heat transfer to the heat accumulator can be delivered by the second mouth 30 and mixed with the coolant cooled by the second heat exchanger 20 before the heat exchanger. to be reintroduced into the tank 13.
    Thus, the third heat exchanger 24 can be fed in direct mode so as to receive, on the first mouth 27 which then constitutes an inlet, at least a portion of the flow of hot heat transfer fluid delivered by the compressor 17 (used to cool the hot load 12), transferring calories from this hot heat transfer fluid to the thermal accumulator so as to cool the heat transfer fluid, and to deliver the heat transfer fluid thus cooled by the second mouth 30, which then constitutes an outlet, to the reservoir 13. The third heat exchanger 24 supplied direct mode therefore increases the cooling capacity of the fluid loop. FIG. 2 shows the fluid loop when the third heat exchanger 24 is supplied in direct mode, the expansion valve being closed. The lines 33, 37 of the inversion circuit are shown in dashed lines to signify that the heat transfer fluid does not circulate in these lines.
    In the case of a two-phase loop, the hot heat transfer fluid fed directly to the inlet of the third heat exchanger 24 is in the gaseous state, and the coolant cooled after passing through the third heat exchanger 24 and delivered at the outlet of the latter is preferably in the liquid state, the third heat exchanger 24 therefore constituting a condenser when fed in direct mode.
    When fed in direct mode, the third heat exchanger 24 is in parallel with the second heat exchanger 20 between the first node 28 and the second node 32. The third heat exchanger 24 and the second heat exchanger 20 all exert heat. both a condenser function.
    The cooling device according to the invention also comprises a circuit for reversing the direction of circulation of the heat transfer fluid in the third heat exchanger 24 allowing, according to a circulation mode, called the reverse mode, to introduce a flow of cold coolant into the second mouth 30 of the third heat exchanger 24 for cooling the heat accumulator by heat transfer from the thermal accumulator 25 to the heat transfer fluid circulating in the opposite direction in the third heat exchanger 24, the heat transfer fluid is heating and exiting the first mouth 27 of the third heat exchanger 24 at a higher temperature, in the gaseous state.
    To do this, the outlet of the tank 13 is connected to the second mouth 30 of the third heat exchanger 24 by a pipe 33 whose intersection at the outlet of the tank 13 forms a third node 34 of the fluid loop. This pipe 33 opens into the pipe 31 connected to the second mouth 30 of the third heat exchanger 24. An expansion valve 35 is interposed on this pipe 33 to, on the one hand, relax the heat-transfer fluid by partially passing it to the gaseous state and by cooling it (said cold coolant flow introduced into the second mouth 30 of the third heat exchanger 24 of heat being expanded to the two-phase state liquid / gas by the expansion valve), on the other hand adjust said cold coolant flow delivered in reverse mode to the third heat exchanger 24. The output of the expansion valve 35 thus delivers, when this expansion valve 35 is open, a flow of coolant fluid two-phase expanded at low temperature, said cold coolant flow, at the inlet of the third heat exchanger 24.
    It should be noted that, in a variant not shown, it is possible to take the cold coolant flow at the outlet of the expansion valve 14 supplying the first heat exchanger 11, on the pipe 16 connecting this expansion valve 14 to the inlet of the first heat exchanger 11. In this variant, the expansion valve 35 can be replaced by a simple controlled valve.
    A valve 36 is interposed on the pipe 31 between the second node 32 of intersection of this pipe 31 with the pipe 23 connected to the second heat exchanger 20 and the third node 34 of intersection of this pipe 31 with the pipe 33 delivering the cooled coolant coolant from the expansion valve 35. This valve 36 is arranged to allow the circulation of the heat transfer fluid in the direct mode liquid state from the second mouth 30 of the third heat exchanger 24 to the second node 32 and the reservoir 13, the valve 36 being open under the effect of the pressure of the liquid coolant. The valve 36 is also arranged to be closed in reverse mode and prohibit the circulation of cold liquid heat transfer fluid from the second node 32 to the second mouth 30 of the third heat exchanger 24. The closure of the valve 36 results from the fact that the pressure of the liquid heat transfer fluid from the second heat exchanger 20 is greater than the pressure of the cooled cold heat transfer fluid from the expansion valve.
    In reverse mode, the heat transfer fluid is heated during its passage through the third heat exchanger 24 and leaves the third heat exchanger 24 through the first mouth 27 which constitutes an outlet of the third heat exchanger 24.
    In the case of a two-phase loop, the cold heat transfer fluid fed in the reverse mode at the inlet of the third heat exchanger 24 is in the two-phase liquid / gas state, and after passing through the third heat exchanger 24, the fluid Heat carrier is in the gaseous state. The third heat exchanger 24 therefore constitutes an evaporator when it is fed in reverse mode.
    The three-way valve 29 interposed on the pipe 26 between the first node 28 and the first mouth 27 of the third heat exchanger 24 receives in inverse mode the flow of heated heat transfer fluid delivered by the first mouth 27. This three-way valve 29 has a output connected by a pipe 37 connected to the pipe 18 connecting the first heat exchanger 11 to the compressor 17 so as to mix the heat transfer fluid flow heated by the third heat exchanger 24 with the heat transfer fluid flow heated by the first heat exchanger 11 of heat, and this upstream of the compressor 17. The intersection of these conduits 37, 18 constitutes a fourth node 38 of the fluid loop.
    When fed in reverse mode, the third heat exchanger 24 is in parallel with the second heat exchanger 20 between the third node 34 and the fourth node 38. The third heat exchanger 24 is also in parallel with the first heat exchanger 11. heat between the third node 34 and the fourth node 38 (in the case of a two-phase loop, the third heat exchanger 24 and the first heat exchanger 11 both exert an evaporator function). FIG. 3 shows the fluid loop when the third heat exchanger 24 is supplied in reverse mode, the expansion valve being open. The pipes 26, 31 are shown in dashed lines to signify that the heat transfer fluid does not circulate in these pipes.
    The third heat exchanger 24 may consist of any reversible heat exchanger, in particular can act as evaporator in direct mode and reverse-mode condenser with a two-phase heat transfer fluid. For example, the third heat exchanger 24 is chosen from plate and fin heat exchangers, plate heat exchangers, tube heat exchangers, coil heat exchangers, microchannel heat exchangers, direct contact heat exchangers. Other examples are possible.
    Preferably, all the valves 14, 21, 29, 35 are solenoid valves that can be controlled by electrical control signals delivered by a control unit 39 of the cooling device. The selection of the supply mode of the third heat exchanger 24 between the direct mode or the reverse mode can be performed entirely automatically by the control unit 39, which is programmed for this purpose. To do this, the control unit 39 is then a PLC or a programmable computer device.
    Such a programmable computer device comprises at least one digital data processing processor, at least one associated memory, a human / machine interface, and at least one power card adapted to deliver electrical control signals of the different solenoid valves according to a logic control determined by the programming of the computing device.
    The fluid loop also comprises different temperature and pressure sensors, in particular for example at least one temperature and pressure sensor 40 at the outlet of the first heat exchanger, and at least one sensor 41 for temperature and pressure at the first mouth. 27 of the third heat exchanger 24. These sensors 40, 41 are connected to the control unit 39 for delivering measurement signals representative of the temperature and the pressure of the coolant.
    The three-way valve 29 and the expansion valve (delivering, in inverse mode, the cold heat transfer fluid expanded to the second mouth 30 of the third heat exchanger 24) are valves controlled by the control unit 39 and constitute a controlled inversion device. the feeding mode of the third heat exchanger 24.
    This inversion device is controlled by the control unit 39: in direct mode when cooling requirement criteria are fulfilled, in inverse mode when said cooling requirement eriters are not filled.
    These cooling need eritères comprise for example at least one eritère according to which the temperature of the hot load 12 is greater than a maximum admissible temperature. Indeed, if this criterion is fulfilled, the cooling needs are relatively high, so that the third heat exchanger 24 is fed in direct mode so that the cooling device provides a greater cooling capacity - particularly maximum -. On the contrary, if the temperature of the hot load 12 is not greater than such a maximum permissible temperature, the cooling requirements are less important, and it is possible not to use the third 24 heat exchanger in direct mode for the cooling the charge 12 ehaude, and feed it in reverse mode to cool on the contrary ee third 24 heat exchanger. Said maximum permissible temperature can be determined according to the hot charge to be cooled, depending on the cooling requirements of this hot charge.
    It should also be noted that it is possible to envisage any logical combination of selection of the supply of the third heat exchanger 24, according to the cooling requirements, depending on the architectures and the combinations of the different heat exchangers and the applications .
    Also, other criteria representative of the cooling requirements than the temperature of the hot charge can be used, alternatively or in combination, to select the supply in direct mode or in reverse mode of the third heat exchanger 24: for example the intensity of electric current consumed by the hot load; rm operating parameter of the hot load 12 representative of the fact that the latter has greater cooling needs; the temperature of the outside air; the available outdoor air flow for the second heat exchanger; the condensation pressure; the temperature of the thermal accumulator ...
    Similarly, the supply selection logic in direct mode or in reverse mode of the third heat exchanger 24 may be subject to many variants and may be more or less complex: it may be a servo closed loop circuit comprising one or more loop (s) for performing appropriate, proportional and / or integral and / or derivative or other regulation.
    The cooling device according to the invention according to the second embodiment shown in FIG. 4 differs from the previous one in that the third heat exchanger 24 is connected in series downstream of the second heat exchanger 20. The pipe 19 at the outlet of the compressor 17 is connected to the inlet of the second heat exchanger 20. The outlet 45 of the second heat exchanger 20 is connected to the first mouth 27 of the third heat exchanger 24 via a controlled two-way valve 46. The first mouth 27 of the third heat exchanger 24 is also connected to the inversion conduit 37 via a controlled two-way reversing valve 47, the two controlled valves 46, 47 being connected to the mouth 27 of the third heat exchanger 24 in parallel with one another. The outlet 45 of the second heat exchanger 20 is also connected upstream of the two-way valve 46 controlled by a bypass line 48 which connects it, via a controlled valve 49, to the second node 32. the fluid loop and the tank inlet 13. In direct mode, the valve 47 reversal is closed. Varmes 46 and 49 may be open or closed, but should preferably be oppositely controlled. If the valve 46 is open, the valve 49 is closed to pass the flow of fluid through the third exchanger 24. If the valve 46 is closed, the valve 49 is opened to divert the heat transfer fluid flow directly to the reservoir 13, this can provide an intermediate situation between the direct mode and the reverse mode, especially before going into reverse mode from the direct mode. In reverse mode, the inversion valve 47 is open, while the valve 46 interposed between the outlet 45 of the second heat exchanger 20 and the first mouth 27 of the third heat exchanger 24 is closed. The valve 49 on the bypass line 48 is open.
    A cooling device and method according to the invention can be the subject of numerous alternative embodiments with respect to the embodiments shown in the figures.
    In particular, the cooling device may comprise several hot charges and / or several first heat exchangers connected in series or in parallel in the fluid loop and / or a plurality of second heat exchangers connected in series or in parallel in the fluid loop. and / or a plurality of third heat exchangers 24 connected in series or in parallel in the fluid loop and / or a plurality of heat accumulators.
    Each third heat exchanger is arranged in said fluid loop so as to be able, in direct mode, to receive a portion of said hot heat transfer fluid flow from at least a first heat exchanger and to transfer calories from this hot heat transfer fluid to the heat exchanger. thermal accumulator. Each third heat exchanger is associated with an inversion circuit and is arranged in the fluid loop so as to be able, in reverse mode, to receive a flow of cold coolant and transfer calories from the heat accumulator to the heat transfer fluid. view of the cooling of this thermal accumulator.
    Each heat exchanger of the fluid loop can be incorporated in a more complex heat exchange device than a simple exchanger to exchange a heat flow with the coolant. Thus, the first heat exchanger can be incorporated in a first more complex thermal device associated with at least one hot load; the second heat exchanger can be incorporated in a second more complex thermal device associated with the air outside the vehicle; the third heat exchanger can be incorporated in a third more complex thermal device associated with at least one heat accumulator.
    The expansion valve and the valve 36 may be incorporated in the same component placed at the node of the pipe 33 coming from the outlet of the tank 13 and the pipe 31 connected to the second mouth 30 of the third heat exchanger. The pipe 37 connected to the outlet of the three-way valve can be connected not upstream of the compressor 17, but upstream of only one stage of this compressor 17, that is to say between two stages compressor 17. A specific compressor can also alternatively be provided to ensure the circulation of heat transfer fluid in reverse mode. At least one of the expansion valves may be replaced by any other expansion device, for example an expansion orifice, a capillary tube, a turbine, etc.). The invention applies to the cooling of any hot load -particularly chosen from the group consisting of electrical devices (for example a source of electrical power supplying an electrical network on board the vehicle) and / or electronic and / or computer, air compartments to cool, cabin air, liquid volumes (selected among the volumes of fuel, water volumes and volumes of heat transfer liquids separate from water and fuel ) -. It applies to the cooling of any hot load on board any vehicle, and in part can be selected from aircraft (passenger aircraft, cargo aircraft, fighter aircraft, helicopters, drones ...) , spacecraft, land transport vehicles (road or rail vehicles ...), water or maritime transport vehicles (ships, submarines ...).
    权利要求:
    Claims (16)
    [1" id="c-fr-0001]
    1 / - A method of cooling at least one hot load on board a vehicle such as an aircraft having a fluid circulation loop of a coolant in which: - for each charge (12) hot to cool, a flow rate of said heat transfer fluid, said cold coolant flow, is introduced into a heat exchanger, said first heat exchanger (11), a first heat exchange device associated with the load (12) hot so as to transferring heat from the latter to the heat transfer fluid, cooling the hot charge and producing a flow rate of said heat transfer fluid, said flow of hot heat transfer fluid, at a temperature greater than that of said cold coolant flow, - at least a portion of said flow rate of heat transfer fluid from at least one such first heat exchanger (11) is introduced into at least one heat exchanger, said second heat exchanger (20), d a second heat exchange device arranged to be able to cool it by air outside the vehicle, a flow rate of said coolant is introduced into at least one heat exchanger, said third heat exchanger (24), a third heat exchange device arranged to be able to exchange a thermal flow between this flow of said coolant and at least one accumulator (25) thermal, separate from said heat transfer fluid, on board the vehicle, - when cooling need criteria are met at least one such third heat exchanger (24) is supplied in a direct flow mode, in which it receives at least a portion of said hot heat transfer fluid flow from at least one such first heat exchanger (11) of heat, said third heat exchange device corresponding transferring calories from this hot heat transfer fluid to the accumulator (24) thermal so as to cool said coolant. when said cooling requirement criteria are not fulfilled, at least one such third heat exchanger (24) is supplied according to a circulation mode, said inverse mode in which it receives a flow rate of said heat transfer fluid is said third device; Corresponding thermal exchange transfers heat from the thermal accumulator (25) to the heat transfer fluid to cool the thermal accumulator (25).
    [0002]
    2 / - Method according to claim 1 characterized in that the fluid loop is a two-phase loop.
    [0003]
    3 / - Method according to any one of claims 1 or 2 characterized in that in reverse mode, each third heat exchanger (24) receives a heat transfer fluid flow rate, said coolant flow coolant, from a reservoir (13) heat transfer fluid through a device (35) of relaxation.
    [0004]
    4 / - Method according to any one of claims 1 to 3 characterized in that: - said criteria of cooling need comprise at least one criterion, said temperature criterion, wherein the temperature of at least one load (12) hot is greater than a maximum allowable temperature, - the temperature of each hot load (12) for which at least one temperature criterion is defined is measured, - at least one such third heat exchanger (24) is supplied with: O in the direct when the measured temperature of each hot load (12) fulfills each temperature criterion, O in inverse mode at least when the measured temperature of each hot load (12) does not meet each temperature criterion.
    [0005]
    5 / - Method according to one of claims 1 to 4 characterized in that for each first heat exchanger (11) associated with a load (12) hot, im single third heat exchanger (24) is arranged to receive, in direct mode, a portion of the flow of hot heat transfer fluid from the first heat exchanger (11).
    [0006]
    6 / - Method according to one of claims 1 to 5 characterized in that each accumulator (25) thermal associated with a third heat exchange device is selected from the group consisting of liquid tanks, gas tanks, reservoirs phase change material, solid parts, and combinations thereof.
    [0007]
    7 / - Cooling device for at least one hot load on board a vehicle such as an aircraft having a fluid circulation loop of a coolant comprising: - for each charge (12) hot to cool, a first heat exchange device associated with the charge (12) hot so as to be able to transfer heat from the latter to a flow rate of said heat transfer fluid, said cold coolant flow, introduced into a heat exchanger, said first exchanger (11) heat, the first heat exchange device, cool the load (12) hot and produce a flow of said heat transfer fluid, said flow of hot heat transfer fluid at a temperature above that of said cold coolant flow, - at least a second heat exchange device arranged to be able to cool by air outside the vehicle at least a portion of said flow of hot heat transfer fluid from the m oins a first heat exchanger (11) and introduced into a heat exchanger, said second heat exchanger (20), this second heat exchange device, - at least a third heat exchange device arranged to be able to exchange a thermal flow between at least one heat accumulator (25), separate from said heat transfer fluid, on board the vehicle and a flow rate of said heat transfer fluid introduced into a heat exchanger, said third heat exchanger (24), of this third device; heat exchange. for each third heat exchanger (24), a circuit, referred to as an inversion circuit, comprising a controlled inversion device (29, 35, 36) comprising at least one controlled valve, said inversion circuit and the inverting device; controlled inversion being arranged to be able to circulate said coolant in the third heat exchanger (24) according to a circulation mode chosen from: O a direct mode in which the third heat exchanger (24) receives at least a part of said flow hot heat transfer fluid from at least a first heat exchanger (11) heat and the third heat exchange device transfers calories from the hot heat transfer fluid to the thermal accumulator (25) so as to cool the hot heat transfer fluid, and O an inverse mode in which the third heat exchanger (24) receives a flow rate of said heat transfer fluid and the third heat exchange device corresponding transfers heat from the thermal accumulator (25) to this heat transfer fluid flow so as to cool the thermal accumulator (25).
    [0008]
    8 / - Device according to claim 7 characterized in that the fluid loop is a two-phase loop.
    [0009]
    9 / - Device according to any one of claims 7 or 8 characterized in that it comprises a reservoir (13) of heat transfer fluid and at least one device (35) of relaxation interposed between the coolant reservoir and im such third (24) heat exchanger and arranged to deliver, in reverse mode, to this third heat exchanger (24) a heat transfer fluid flow rate, said coolant coolant flow rate, at a temperature lower than that of each accumulator (25) thermal associated with this third heat exchanger.
    [0010]
    10 / - Device according to one of claims 7 to 9, characterized in that it comprises a control unit (39) adapted to be able to control at least one such device (29, 35, 36) inversion: - in direct mode when cooling requirement criteria are fulfilled, - in inverse mode when said cooling need eritères are not filled.
    [0011]
    11 / - Device according to revendieation 10 characterized in that said cooling need criteria comprise at least one criterion, said temperature criterion, wherein the temperature of at least one load (12) hot is greater than a maximum acceptable temperature , and in that the control unit (39) is adapted to: - receive temperature measurement signals of each hot load for which at least one temperature criterion is defined, - check whether each temperature criterion is fulfilled, - control at least one such device (29, 35, 36) inversion; O in direct mode when the measured temperature of each hot load (12) fulfills each temperature criterion, O in inverse mode at least when the measured temperature of each hot load (12) does not meet each temperature criterion.
    [0012]
    12 / - Device according to any one of claims 7 to 11 characterized in that for each first heat exchanger (11) of a first heat exchange device associated with a load (12) hot, a single third heat exchanger ( 24) is arranged to be able to receive, in direct mode, a portion of the flow of hot heat transfer fluid from the first heat exchanger (11).
    [0013]
    13 / - Device according to any one of claims 7 to 12 characterized in that a device (29, 35, 36) inversion controlled at least one such third heat exchanger comprises a valve (29) three ways controlled device having: - an outlet connected to a pipe (18) downstream of at least a first heat exchanger (11), - an inlet connected to a pipe (19) connected to a second heat exchanger (20) . an inlet / outlet connected to a first mouth (27) of the third heat exchanger (24), and in that the control unit (39) is connected to the three-way range (29) and adapted for: direct mode connecting the inlet of the three-way valve (29) to its inlet / outlet which serves as an outlet for a flow of said coolant taken from the pipe (19) inlet of the second heat exchanger (20), - in reverse mode connect the inlet / outlet of the three-way valve (29) to its outlet, the inlet / outlet acting as an inlet for a flow of said heat transfer fluid from the third heat exchanger (24), said heat transfer fluid from the outlet of the three-way valve (29) being mixed with said heat transfer fluid of said outlet pipe (18).
    [0014]
    14 / - Device according to claim 13 characterized in that the third heat exchanger (24) comprises a second mouth (30) connected: - in direct mode with a conduit (23) output of at least a second heat exchanger (20) heat, said coolant coming from said second mouth (30) of the third exchanger (24) being mixed with said heat transfer fluid of said outlet pipe (23), - in inverse mode with a device (35) for expansion of a flow rate of said coolant.
    [0015]
    15 / - Device according to one of claims 7 to 14 characterized in that each accumulator (25) associated with thermal im third heat exchange device is selected from the group consisting of liquid tanks, gas tanks, reservoirs phase change material, solid parts, and combinations thereof.
    [0016]
    16 / -Vehicle characterized in that it comprises a device according to one of claims 7 to 15 of cooling of at least one load (12) hot on board the vehicle.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3465050B1|2020-12-16|Method and device for cooling at least one heat source of a vehicle like an aircraft with a partial reversible cycle
    EP2894419B1|2020-12-16|Air-conditioning device for a compartment, in particular for a railway vehicle, and method for defrosting the device
    EP1599352A2|2005-11-30|Ventilation/heating and/or air conditioning device for the passenger compartment of a motor vehicle with simultaneous cooling of air and coolant
    FR3020129A1|2015-10-23|FRIGORIGENE FLUID CIRCUIT
    EP2437955B1|2013-06-05|Multifunction thermal management device and method of an electric vehicle
    FR2936224A1|2010-03-26|SYSTEM FOR MANAGING THE THERMAL FLOW OF AN AIRCRAFT.
    FR3037639A1|2016-12-23|THERMAL MANAGEMENT DEVICE
    FR2731952A1|1996-09-27|AIR CONDITIONING FLUID CIRCUIT FOR A VEHICLE FOR ADJUSTABLE POWER HEATING
    FR2744071A1|1997-08-01|HEATING DEVICE FOR VEHICLE USING THE REFRIGERANT FLUID CIRCUIT
    FR3065518A1|2018-10-26|METHOD AND DEVICE FOR THERMALLY CONTROLLING A PLURALITY OF CABINS OF A VEHICLE
    FR2974624A1|2012-11-02|ASSEMBLY COMPRISING A REFRIGERANT FLUID CIRCUIT AND A HEAT TRANSFER CIRCUIT
    FR2865436A1|2005-07-29|Cab interior heating or cooling device for motor vehicle, has Peltier effect unit including cold surface that is in contact with outside air and/or air from cab interior using air inlet duct
    FR3043762B1|2019-10-18|HEAT PUMP SYSTEM WITH ELECTRICAL EXPANSION VALVE FOR IMPROVED MONITORING OF HUMIDITY IN A HABITACLE
    FR2914357A1|2008-10-03|SYSTEM AND METHOD FOR COOLING A MOTOR POWERTRAIN OF A MOTOR VEHICLE.
    FR3022852A1|2016-01-01|MOTOR VEHICLE THERMAL MANAGEMENT DEVICE AND CORRESPONDING DRIVING METHOD
    FR2953889A1|2011-06-17|Coolant calories exchanging circuit for heat engine of motor vehicle, has derivation branch arranged in parallel with heater, and selection units permitting orientation of coolant in selective manner in heater or derivation branch
    FR2982355A1|2013-05-10|AIR CONDITIONING LOOP FOR A HEATING, VENTILATION AND / OR AIR CONDITIONING INSTALLATION
    FR2984611A1|2013-06-21|HEAT STORAGE DEVICE FOR HEATING A VEHICLE BATTERY
    FR2914356A1|2008-10-03|SYSTEM AND METHOD FOR COOLING A MOTOR POWERTRAIN OF A MOTOR VEHICLE.
    WO2012101338A1|2012-08-02|Heating/air conditioning unit having a simplified architecture and increased cooling capacity
    FR2936393A1|2010-03-26|Vehicle i.e. diesel hybrid vehicle, has supply circuit for supplying fuel to heat engine and including branch traversed by cooler exchanger of electrical system, where fuel is used as coolant in exchanger
    EP3295106A1|2018-03-21|Device for storing thermal energy
    FR3013268A1|2015-05-22|HEAT CONDITIONING SYSTEM FOR A MOTOR VEHICLE AND HEATING, VENTILATION AND / OR AIR CONDITIONING SYSTEM THEREOF
    FR3077236A1|2019-08-02|DEVICE FOR THE HEAT TREATMENT OF A CARGO AND A TRACTION CHAIN OF A VEHICLE
    FR2974886A1|2012-11-09|Air-conditioning and heating installation i.e. reversible heat pump, for heating or cooling interior air in e.g. all-electric car, has regulation unit for regulating proportion of refrigerant directed toward internal evaporator
    同族专利:
    公开号 | 公开日
    FR3051894B1|2019-04-26|
    EP3465050A1|2019-04-10|
    WO2017207404A1|2017-12-07|
    EP3465050B1|2020-12-16|
    ES2864963T3|2021-10-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4235830A1|1992-10-23|1994-04-28|Man Nutzfahrzeuge Ag|Heat storage system for the cold start of internal combustion engines|
    US20030014987A1|1999-09-17|2003-01-23|Robert Levenduski|Thermal storage apparatus and method for air conditioning system|
    US20050167079A1|2004-02-04|2005-08-04|Zhang Tony T.|Method and apparatus for automobile warming-up|
    DE102008007560A1|2008-02-05|2009-03-05|Daimler Ag|Cooling circuit for internal-combustion engine of motor vehicle, has thermostatic valve connecting feed line with bypass line depending on temperature of coolant, and latent-heat storage system connected to bypass line|
    EP2361006A2|2010-02-13|2011-08-24|Adensis GmbH|Cooling system with ventilator for photovoltaic converter|EP3581497A1|2018-06-15|2019-12-18|Airbus Defence and Space|Cooling system with two heat exchangers and vehicle with a cooling system|
    FR3088994A1|2018-11-28|2020-05-29|Liebherr-Aerospace Toulouse Sas|HEAT EXCHANGER AND FLUID COOLING SYSTEM COMPRISING SUCH A HEAT EXCHANGER|
    FR3107343A1|2020-02-14|2021-08-20|Airbus Operations Sas|EXCHANGER SYSTEM CONTAINING TWO HEAT EXCHANGERS|US5497629A|1993-03-23|1996-03-12|Store Heat And Produce Energy, Inc.|Heating and cooling systems incorporating thermal storage|
    DE10140630A1|2001-08-18|2003-02-27|Bayerische Motoren Werke Ag|Cooling plant for motor vehicles has coolant expansion elements and heat accumulator with two operating modes|
    FR3040148A1|2015-08-20|2017-02-24|Hutchinson|CIRCUIT AND METHOD FOR COOLING ON A VEHICLE|
    法律状态:
    2017-05-25| PLFP| Fee payment|Year of fee payment: 2 |
    2017-12-01| PLSC| Search report ready|Effective date: 20171201 |
    2018-05-17| PLFP| Fee payment|Year of fee payment: 3 |
    2019-06-25| PLFP| Fee payment|Year of fee payment: 4 |
    2020-05-23| PLFP| Fee payment|Year of fee payment: 5 |
    2021-05-22| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1600875A|FR3051894B1|2016-05-30|2016-05-30|METHOD AND APPARATUS FOR COOLING AT LEAST ONE HOT LOAD ON BOARD A VEHICLE SUCH AS A PARTIALLY REVERSIBLE FLUID LOOP AIRCRAFT|
    FR1600875|2016-05-30|FR1600875A| FR3051894B1|2016-05-30|2016-05-30|METHOD AND APPARATUS FOR COOLING AT LEAST ONE HOT LOAD ON BOARD A VEHICLE SUCH AS A PARTIALLY REVERSIBLE FLUID LOOP AIRCRAFT|
    ES17726282T| ES2864963T3|2016-05-30|2017-05-24|Method and device for cooling at least one hot cargo on board a vehicle such as an aircraft with a partially reversible closed fluid circuit|
    PCT/EP2017/062649| WO2017207404A1|2016-05-30|2017-05-24|Method and device for cooling at least one hot load on board a vehicle such as an aircraft with a partially reversible fluid loop|
    EP17726282.1A| EP3465050B1|2016-05-30|2017-05-24|Method and device for cooling at least one heat source of a vehicle like an aircraft with a partial reversible cycle|
    [返回顶部]