• 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 refrigerant circuit for the thermal conditioning of a motor vehicle, comprising a first heat exchanger (1) capable of forming a boiler, a second heat exchanger (2) capable of forming a condenser, a third heat exchanger (3) adapted to form an evaporator, a fourth heat exchanger (4) capable of forming an evaporator, a compressor (Cp), a pump (P), a first expander (D1), a second expander (D2 ), a trithermal ejector (E) having a driving input (7), a suction inlet (8) and an outlet (9), and means (V1, V2) able to circulate the refrigerant according to several modes of different operation
    公开号:FR3017450A1
    申请号:FR1451034
    申请日:2014-02-11
    公开日:2015-08-14
    发明作者:Rabih Murr；Regine Haller；Jean-Luc Thuez；Mohamed Yahia
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a refrigerant circuit for the thermal conditioning of a motor vehicle. It is known to use one or more thermal conditioning circuits capable of fulfilling the following functions: heating of the passenger compartment of a vehicle, cooling of the passenger compartment, this function being also called air conditioning of the passenger compartment, and dehumidification of the cockpit. The thermal conditioning of the cabin (heating, air conditioning and / or dehumidification) improves the comfort for the driver or passengers of the vehicle.
    [0002] It now appears necessary to provide a refrigerant circuit ensuring in particular the air conditioning function and having a high performance or coefficient of performance. It is recalled that the coefficient of performance is the ratio of the cooling capacity supplied to the work supplied.
    [0003] The invention aims in particular to provide a simple, effective and economical solution to this problem. For this purpose, it proposes a refrigerant circuit for the thermal conditioning of a motor vehicle, comprising a first heat exchanger capable of forming a boiler, a second heat exchanger capable of forming a condenser, a third heat exchanger suitable forming an evaporator, a fourth heat exchanger capable of forming an evaporator, a compressor, a pump, a first expander, a second expander, a trithermal ejector having a drive input, a suction inlet and an outlet, and means capable of circulating the refrigerant according to at least one of the following operating modes: a first mode of operation in which the refrigerant circulates in a first loop at least successively passing through the second heat exchanger, a first part of the fluid refrigerant then passing through the first regulator and then the fourth heat exchanger, while second portion of the refrigerant then passes through the second expander and the third heat exchanger, the entire refrigerant then passing through the compressor before crossing again the second heat exchanger, - a second operating mode in which the refrigerant circulates in a second loop passing at least successively the second heat exchanger, a first portion of the refrigerant then passing through the pump, the first heat exchanger, then enters the ejector at the drive input, while a second part of the refrigerant then passes through the second expander and the third heat exchanger before entering the ejector at the suction inlet, the entire refrigerant leaving the ejector through the corresponding outlet before cross again the second heat exchanger, - a third mode of operation in the equel the refrigerant circulates in a third loop through at least the second heat exchanger successively, a first portion of the refrigerant then passing through the first expander, the fourth heat exchanger and the compressor before crossing again the second heat exchanger, a second portion of the refrigerant then passing through the second expander and the third heat exchanger before entering the ejector through the suction inlet, a third portion of the refrigerant then passing through the pump and the first heat exchanger before to enter the ejector by the drive input, said second and third parts of the fluid exiting the ejector by the corresponding outlet before crossing again the second heat exchanger.
    [0004] The first heat exchanger may be able to exchange heat with a heat transfer fluid of a cooling circuit of a heat engine of a vehicle and / or with exhaust gases resulting from such a heat engine, for example. example.
    [0005] Furthermore, the second heat exchanger can be placed in front of the vehicle, so as to exchange heat with the air outside the vehicle. In addition, the third and fourth heat exchangers can exchange heat with air intended to open into the passenger compartment of the vehicle. In the first mode of operation, the third and fourth heat exchangers are used to cool a flow of air intended to open into the passenger compartment of the vehicle, for example, the calories drawn from this air flow being discharged to the outside. through the second heat exchanger. The operation of the circuit is then ensured by the compressor. This first mode of operation can for example be used when the engine is cold, and therefore when the heat transfer fluid of the cooling circuit is also cold, that is to say when there is not enough thermal power available. at the level of the first heat exchanger. In the second mode of operation, calories are taken using the first heat exchanger, on the heat transfer fluid of the engine cooling circuit or on the engine exhaust gas, for example. As before, the second heat exchanger discharges heat outside and the third heat exchanger has the function of cooling the air entering the cabin, for example. In this mode too, the compressor is switched off and the pump is started. Note that the pump requires a much lower power than the compressor to ensure the operation of the circuit.
    [0006] The second mode of operation can for example be used when the heat transfer fluid of the engine cooling circuit is hot, that is to say when there is sufficient thermal power available at the first exchanger, and that the needs in air conditioning are relatively low. In the third mode of operation, calories are taken using the first heat exchanger, on the heat transfer fluid of the engine cooling circuit or on the engine exhaust gas, for example. As before, the second heat exchanger discharges heat outside. In addition, the third heat exchanger and the fourth heat exchanger both have the function of cooling the air entering the passenger compartment, for example. In this operating mode, the compressor and the pump are started.
    [0007] The third mode of operation can for example be used when the heat transfer fluid of the engine cooling circuit is hot, that is to say when there is sufficient thermal power available at the first exchanger, and that the needs in air conditioning are relatively high.
    [0008] Such a circuit effectively ensures the air conditioning function, whether the vehicle is stopped or started, and has a higher coefficient of performance than the circuits of the prior art. According to an optional feature, the circuit comprises a refrigerant storage bottle located downstream of the second heat exchanger. This bottle can be integrated in the second heat exchanger. In addition, the circuit may comprise a fifth heat exchanger capable of exchanging heat between the part of the refrigerant from the second heat exchanger or the bottle, on the one hand, and the part of the refrigerant intended to pass through the compressor.
    [0009] Such a heat exchanger is also called I.H.X, for "Internai Heat eXchanger", in English. The presence of the fifth heat exchanger further improves the performance coefficient of the circuit.
    [0010] In addition, the circuit may include a sixth heat exchanger capable of exchanging heat between the portion of the refrigerant from the pump and the portion of the refrigerant from the compressor. The sixth heat exchanger forms a I.H.X type recuperator. and also improves the performance coefficient of the circuit. Preferably, the ejector comprises, from upstream to downstream, a nozzle comprising a convergence zone followed by a diverging zone, a mixing chamber and a diffuser arranged in such a way that the refrigerant entering through the motor input passes through the convergent zone and then the divergent zone of the nozzle, causing the suction of the refrigerant at the suction inlet, all the refrigerant passing through the mixing chamber and the diffuser before being ejected by the exit of the ejector. According to one embodiment of the invention, the circuit comprises: a first portion connecting a first branch to the driving input of the ejector, said first portion comprising successively, from upstream to downstream in the direction of flow of the refrigerant, a first shutoff valve, the pump and the first heat exchanger, - a second portion connecting a second branch to the first branch, said second portion comprising successively, from upstream to downstream, the compressor and the second heat exchanger, the second portion having a third branch located between the compressor and the second heat exchanger, - a third portion connecting the first branch to the second branch, said third portion comprising successively, from upstream to the second downstream, the first expander and the fourth heat exchanger, - a fourth portion connecting the first branch to the the fourth portion comprises successively, from upstream to downstream, the second expander, the third heat exchanger and a second valve comprising three channels, a first channel of the second valve being connected at the third heat exchanger, a second channel of the second valve being connected to the suction inlet of the ejector, - a fifth portion connecting the outlet of the ejector to the third branch, - a sixth portion connecting a third track from the second valve to the second branch. In this case, the fifth heat exchanger may comprise a first portion equipping the third portion and located between the first branch and the first expander, and a second part equipping the second portion and located between the second branch 20 and the compressor, so that to be able to exchange heat between the fluid passing through the first part and the fluid passing through the second part of the fifth exchanger. According to another embodiment of the invention, the circuit comprises: a first portion connecting a first branch to the driving input of the ejector, said first portion comprising successively, from upstream to downstream in the direction a first shut-off valve, the pump and the first heat exchanger, a second portion connecting a second branch to the first branch, said second section comprising successively, from upstream to downstream, the compressor and the second heat exchanger, the second portion having a third branch located between the compressor and the second heat exchanger, - a third portion connecting the first branch to the second branch, said third portion comprising successively, from upstream to downstream, the first expander and the fourth heat exchanger, the third portion further comprising a fourth junction located between the first branch and the first expander, - a fourth portion connecting the fourth branch to the suction inlet of the ejector, said fourth portion comprising successively, from upstream to downstream, the second expander, the third heat exchanger and a second valve comprising three channels, a first channel of the second valve being connected to the third heat exchanger, a second channel of the second valve being connected to the suction inlet of the ejector, a fifth portion connecting the output of the ejector to the third branch, - a sixth portion connecting a third channel of the second valve to the second branch. In this case, the fifth heat exchanger may comprise a first portion equipping the third portion and located between the first branch and the fourth branch, and a second part equipping the second portion and located between the second branch and the compressor, so as to to be able to exchange heat between the fluid passing through the first part and the fluid passing through the second part of the fifth exchanger. Preferably, the bottle equips the second portion and is located between the first branch and the second heat exchanger.
    [0011] In addition, the sixth heat exchanger may comprise a first portion equipping the first portion and located between the pump and the first heat exchanger, and a second portion equipping the second portion and located between the compressor and the third branch, so as to to be able to exchange heat between the fluid passing through the first part and the fluid passing through the second part (6b) of the sixth exchanger. Finally, the invention relates to a motor vehicle comprising a cooling circuit of a heat engine, said cooling circuit using a coolant, and an exhaust line of the combustion gases from the engine, characterized in that it comprises a circuit of the aforementioned type, the first heat exchanger being able to exchange heat with the heat transfer fluid of the cooling circuit and / or with the combustion gases of the exhaust line. The invention will be better understood and other details, features and advantages of the invention will become apparent on reading the following description given by way of non-limiting example with reference to the accompanying drawings, in which: FIG. 1 is a view schematic of a first embodiment of a circuit according to the invention, - Figure 2 is a schematic view, in axial section, of the ejector of the circuit, - Figure 3 is a view corresponding to Figure 1, illustrating a first operating mode of the circuit, - Figure 4 is a Mollier diagram illustrating the first operating mode of the circuit, - Figures 5 and 6 are views respectively corresponding to Figures 3 and 4, illustrating a second mode of operation. of the circuit; FIGS. 7 and 8 are views respectively corresponding to FIGS. 3 and 4, illustrating a third mode of operation of the circuit; FIG. 9 is a view corresponding to FIG. 3, illustrating a second embodiment of the invention; Fig. 10 is a view corresponding to Fig. 3, illustrating a third embodiment of the invention; Fig. 11 is a view corresponding to Fig. 3, illustrating a fourth embodiment of the invention.
    [0012] Figures 1 to 9 illustrate a refrigerant circuit for the thermal conditioning of a motor vehicle, according to a first embodiment. The circuit comprises a first heat exchanger 1 capable of forming a boiler, a second heat exchanger 2 capable of forming a condenser, a third heat exchanger 3 capable of forming an evaporator, a fourth heat exchanger 4 capable of forming an evaporator a fifth heat exchanger having a first portion 5a and a second portion 5b, a compressor Cp, a pump P, a first expander D1, a second expander D2, a trithermal ejector E having a drive input 7, an input D suction 8 and an outlet 9, a bottle B for storing the refrigerant, this bottle can be integrated in the second heat exchanger, a shutoff valve V1 and a valve V2 having three channels. The first heat exchanger 1 may be able to exchange heat with a heat transfer fluid of a cooling circuit of a thermal engine of a vehicle and / or with exhaust gases from such a heat engine, for example. Furthermore, the second heat exchanger 2 can be placed on the front of the vehicle, so as to exchange heat with the air outside the vehicle.
    [0013] In addition, the third and fourth heat exchangers 3, 4 can exchange heat with a flow of air F intended to open into the passenger compartment of the vehicle. In addition, the fifth heat exchanger 5a, 5b forms an exchanger 5 of type IHX (for Heat Internai eXchanger, in English) and is designed to exchange heat between the refrigerant flowing through the first part 5a and the refrigerant flowing through the second part 5b. As best seen in FIG. 2, the ejector E comprises, from upstream to downstream, a nozzle 10 comprising a convergent zone 11 followed by a diverging zone 12, a mixing chamber 13 and a diffuser 14. As is known per se, these various elements are arranged in such a way that the refrigerant entering through the drive inlet 7 passes through the convergent zone 11 and then the diverging zone 12 of the nozzle 10, causing the fluid to be drawn in. refrigerant at the suction inlet 8, in an area surrounding the nozzle 10, the entire refrigerant then passing through the mixing chamber 13 and the diffuser 14 before being ejected through the outlet 9 of the ejector E. The circuit further comprises: - a first portion 131 connecting a first branch 20 El to the driving input 7 of the ejector E, said first portion P1 comprising successively, from upstream to downstream in the direction refrigerant circulation, the refrigerant first stop valve V1, the pump P and the first heat exchanger 1; a second portion P2 connecting a second branch E2 to the first branch E1, said second portion P2 comprising successively, from upstream to downstream, the second part 5b of the fifth heat exchanger, the compressor Cp, the second heat exchanger 2 and the bottle B, the second portion P2 comprising a third branch E3 situated between the compressor Cp 30 and the second heat exchanger 2, third portion P3 connecting the first spur El to the second spur E2, said third portion P3 successively comprising, from upstream to downstream, the first portion 5a of the fifth heat exchanger, the first expander D1 and the fourth heat exchanger 4 a fourth portion P4 connecting the first branch El to the suction inlet 8 of the ejector E, said fourth portion P4 comprising, successively, upstream to the downstream, the second expander D2, the third heat exchanger 3 and the second valve V2 having three channels, a first channel of the second valve V2 being connected to the third heat exchanger 3, a second channel of the second valve V2 being connected to the suction inlet 8 of the ejector E, - a fifth portion P5 connecting the output 9 of the ejector E to the third branch E3, - a sixth portion P6 connecting a third channel of the second valve V2 at the second branch E2. Figure 3 illustrates a first mode of operation of this circuit. In this operating mode, the compressor Cp is started, the pump P is stopped, the valve V1 is closed, the second channel of the second valve V2 is closed, and the first and third channels of the second valve V2 are open. Note that in Figures 3, 5 and 7, the bodies that are not traversed by the refrigerant in the operating mode considered have been shown in dashed lines, the others being shown in bold lines. In this operating mode, the refrigerant circulates in a first loop successively passing through the second heat exchanger 2, the bottle B, a first portion of the refrigerant then passing through the first portion 5a of the fifth heat exchanger, the first expansion valve D1 and then the fourth heat exchanger 4, while a second portion of the refrigerant then passes through the second expander D2, the third heat exchanger 3, then the valve V2, the entire refrigerant then passing through the second part 5b of the fifth exchanger then the compressor Cp before crossing again the second heat exchanger 2. The corresponding thermodynamic cycle is illustrated in the Mollier diagram of Figure 4. In this diagram, the abscissa is formed by the enthalpy h and l ordinate is formed by the pressure p of the refrigerant.
    [0014] Points referenced 11 to 19 have been reported both on the Mollier diagram and on the refrigerant circuit illustrated in Figure 3 to facilitate understanding. The phases of the refrigerant (liquid, diphasic, that is to say liquid and vapor, steam) are also indicated on the diagram, as well as the different stages of the cycle (evaporation, condensation, compression, expansion). As indicated above, in the first mode of operation, the third and fourth heat exchangers 3, 4 make it possible to cool the flow of air F intended to open into the passenger compartment of the vehicle, the calories drawn from this air flow F being discharged outside via the second heat exchanger 2. The operation of the circuit is provided by the compressor Cp. This first mode of operation can for example be used when the engine is cold, and therefore when the heat transfer fluid of the cooling circuit is also cold, that is to say when there is not enough thermal power available. at the level of the first heat exchanger 1. Figures 5 and 6 illustrate a second mode of operation of this circuit. In the second mode of operation, the compressor Cp is stopped, the pump P is started, the valve V1 is open, the third channel of the second valve V2 is closed, and the first and second channels of the second valve V2 are open.
    [0015] In this mode of operation, the refrigerant circulates in a second loop successively passing through the second heat exchanger 2 and the bottle B, a first portion of the refrigerant then passing through the first valve V1, the pump P, the first heat exchanger 1 , then enters the ejector E at the driving input 7, while a second portion of the refrigerant then passes through the second expander D2, the third heat exchanger 3, then the second valve V2 before entering the ejector E at the suction inlet 8, all the refrigerant leaving the ejector E by the corresponding outlet 9 before crossing again the second heat exchanger 2. Note that the point i5 on the Mollier diagram of FIG. 6 is the point representing the state of the refrigerant at the outlet of the nozzle 10 and that the point i8 is the point representing the state of the refrigerant in the heat sink. It will also be noted that in the diffuser between i8 and i1 the velocity decreases due to the increase in section and a portion of the transferred kinetic energy is converted into pressure. As indicated above, in the second mode of operation, calories are sampled using the first heat exchanger 1, on the heat transfer fluid of the engine cooling circuit and / or on the exhaust gas of the engine. The second heat exchanger 2 discharges heat outside and the third heat exchanger 3 has the function of cooling the air flow F intended to enter the passenger compartment of the vehicle.
    [0016] The second mode of operation can for example be used when the heat transfer fluid of the engine cooling circuit is hot (or the exhaust gases are sufficiently hot), that is to say when there is sufficient power heat available at the first heat exchanger 1, and that the cooling needs are relatively low.
    [0017] Figures 7 and 8 illustrate a third mode of operation of this circuit. In the third mode of operation, the compressor Cp is started, the pump P is started, the valve V1 is open, the third channel of the second valve V2 is closed, and the first and second channels of the second valve V2 are open. In this operating mode, the refrigerant circulates in a third loop passing at least successively the second heat exchanger 2, a first portion of the refrigerant then passing through the first expander D1, the fourth heat exchanger 4 and the compressor Cp before cross again the second heat exchanger 2, a second portion of the refrigerant then passing through the second expander D2 and the third heat exchanger 3 before entering the ejector E by the suction inlet 8, a third part refrigerant then passing through the pump P and the first heat exchanger 1 before entering the ejector E by the drive input 7, said second and third parts of the fluid leaving the ejector E through the corresponding output 9 before to cross again the second heat exchanger 2. It will be noted that the point i12 on the Mollier diagram of FIG. t the point representing the state of the refrigerant at the outlet of the nozzle 10 and the point i13 is the point representing the state of the refrigerant in the mixing chamber 13. It will also be noted that in the diffuser, between i13 and i14, the velocity decreases because of the section increase and a part of the transferred kinetic energy is transformed into pressure. As indicated above, in the third mode of operation, calories are sampled using the first heat exchanger 1, on the heat transfer fluid of the engine cooling circuit and / or on the exhaust gas of the engine. The second heat exchanger 2 evacuates heat outside. Furthermore, the third heat exchanger 3 and the fourth heat exchanger 4 have the function of cooling the air flow F intended to enter the passenger compartment of the vehicle. The third mode of operation can for example be used when the heat transfer fluid of the engine cooling circuit is hot (or the exhaust gases are sufficiently hot), that is to say when there is sufficient power available at the first heat exchanger 1, and that the cooling requirements are relatively high. Such a circuit effectively ensures the air conditioning function, whether the vehicle is stopped or started, and has a higher coefficient of performance than the circuits used in the prior art to provide the same air conditioning function. Note that, in the case of the second mode of operation, with a temperature outside the vehicle of the order of 25 ° C and a thermal power at the first heat exchanger 1 of the order of 5 kW, it is possible to produce 1 kW of cooling capacity. It will also be noted that the third mode of operation makes it possible to improve the coefficient of performance (COP) by about 25% with respect to the first mode of operation, for a total cooling power of 2 kW produced by the third and fourth heat exchangers. 4. FIG. 9 shows a second embodiment of the invention, which differs from that previously described with reference to FIG. 1 in particular, in that it does not have a fifth heat exchanger. In other words, parts 5a and 5b have been removed from the circuit. FIG. 10 represents a third embodiment of the invention, in which the circuit comprises: a first portion P1 connecting a first branch E1 to the driving input 7 of the ejector E, said first portion P1 comprising successively, from upstream to downstream in the direction of circulation of the refrigerant, the first shutoff valve V1, the pump P and the first heat exchanger 1, - a second portion P2 connecting a second branch E2 to the first branch E1 said second portion E2 successively comprising, from upstream to downstream, the second portion 5b of the fifth heat exchanger, the compressor Cp, the second heat exchanger 2 and the bottle B, the second portion P2 comprising a third branch E3 located between the compressor Cp and the second heat exchanger 2, - a third portion P3 connecting the first branch El to the second branch E2, said third portion P3 comprising successively, from upstream to downstream, the first expander D1 and the fourth heat exchanger 4, the third portion P3 further comprising a fourth branch E4 located between the first branch El and the first expander D1, the first part 5a of the first heat exchanger being located between the first branch E1 and the fourth branch E4; a fourth portion P4 connecting the fourth branch E4 to the inlet inlet 8 of the ejector E, said fourth portion P4 comprising, successively, from upstream to downstream, the second expander D2, the third heat exchanger 3 and the second valve V2 having three channels, a first channel of the second valve V2 being connected to the third heat exchanger 3, a second channel of the second valve V2 being connected to the suction inlet 8 of the ejector E, a fifth portion P5 connecting the outlet 9 of the ejector E to the third branch E3, a sixth portion P6 connecting a third channel of the second valve V2 to the second branch E2. As before, the fifth heat exchanger is designed to be able to exchange heat between the fluid passing through the first portion 5a and the fluid passing through the second portion 5b.
    [0018] FIG. 11 represents a fourth embodiment of the invention, which differs from that previously described with reference in particular to FIG. 1 in that the circuit comprises a sixth heat exchanger. This comprises in particular a first portion 6a equipping the first portion P1 and located between the pump P and the first heat exchanger 1, and a second portion 6b equipping the second portion P2 and located between the compressor Cp and the third branch E3 . The sixth heat exchanger is designed to be able to exchange heat between the fluid passing through the first portion 6a and the fluid passing through the second portion 6b. This heat exchanger forms a I.H.X type recuperator.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. Refrigerant circuit for the thermal conditioning of a motor vehicle, comprising a first heat exchanger (1) 5 adapted to form a boiler, a second heat exchanger (2) capable of forming a condenser, a third heat exchanger ( 3) capable of forming an evaporator, a fourth heat exchanger (4) capable of forming an evaporator, a compressor (Cp), a pump (P), a first expander (D1), a second expander (D2), an ejector tritherme (E) comprising a drive input (7), a suction inlet (8) and an outlet (9), and means (V1, V2) adapted to circulate the refrigerant according to at least one of the following operating modes: a first mode of operation in which the refrigerant circulates in a first loop at least successively through the second heat exchanger (2), a first portion of the refrigerant then passing through the first expander (D1) then the fourth heat exchanger (4), while a second portion of the refrigerant then passes through the second expander (D2) and the third heat exchanger (3), the entire refrigerant 20 then passing through the compressor (Cp) before to cross again the second heat exchanger (2), - a second operating mode in which the refrigerant circulates in a second loop through at least successively the second heat exchanger (2), a first portion 25 of the refrigerant through then the pump (P), the first heat exchanger (1), then enters the ejector (E) at the drive inlet (7), while a second portion of the refrigerant then passes through the second expander (D2) then the third heat exchanger (3) before entering the ejector (E) at the suction inlet (8), the assembly 30 of the refrigerant coming out of the ejector (E ) by the exit corres (9) before crossing again the second heat exchanger (2), - a third mode of operation in which the refrigerant circulates in a third loop at least successively passing through the second heat exchanger (2), a first part refrigerant then passing through the first expander (D1), the fourth heat exchanger (4) and the compressor (Cp) before passing through the second heat exchanger (2) again, a second portion of the refrigerant then passing through the second expander (D2) and then the third heat exchanger (3) before entering the ejector (E) through the suction inlet (8), a third portion of the refrigerant 10 thereafter passing through the pump (P) then the first heat exchanger (1) before entering the ejector (E) through the drive input (7), said second and third parts of the fluid exiting the ejector (E) through the corresponding output (9). ) before t cross again the second heat exchanger (2). 15
    [0002]
    2. Refrigerant circuit according to claim 1, characterized in that it comprises a bottle (B) for refrigerant storage located downstream of the second heat exchanger (2).
    [0003]
    3. Circuit according to claim 1 or 2, characterized in that it comprises a fifth heat exchanger (5a, 5b) adapted to exchange heat between the part of the refrigerant from the second heat exchanger (2) or of the bottle (B), on the one hand, and the part of the refrigerant intended to pass through the compressor (Cp).
    [0004]
    4. Circuit according to one of claims 1 to 3, characterized in that it comprises a sixth heat exchanger (6a, 6b) adapted to exchange heat between the portion of the refrigerant from the pump (P) and the portion of the refrigerant from the compressor (Cp).
    [0005]
    5. Circuit according to one of claims 1 to 4, characterized in that the ejector (E) comprises, from upstream to downstream, a nozzle (10) comprising a convergent zone (11) followed by a diverging zone (12), a mixing chamber (13) and a diffuser (14) arranged in such a way that the refrigerant entering through the driving inlet (7) passes through the zoneconvergent (11) and then the diverging zone (12). ) of the nozzle (10), causing the suction of the refrigerant at the suction inlet (8), all the refrigerant passing through the mixing chamber (13) and the diffuser (14) before the to be ejected by the outlet (9) of the ejector (E).
    [0006]
    6. Circuit according to one of claims 1 to 5, characterized in that it comprises: - a first portion (P1) connecting a first branch (El) to the drive input (7) of the ejector (E) said first portion (P1) successively comprising, from upstream to downstream in the direction of circulation of the refrigerant, a first shut-off valve (V1), the pump (P) and the first heat exchanger (1). a second portion (P2) connecting a second branch (E2) to the first branch (El), said second portion (P2) comprising successively, from upstream to downstream, the compressor (Cp) and the second exchanger of heat (2), the second portion (P2) having a third branch (E3) located between the compressor (Cp) and the second heat exchanger (2), - a third portion (P3) connecting the first branch (El) at the second branch (E2), said third portion (P3) comprising successively, from upstream to downstream, the first expander (D1) and the fourth heat exchanger (4), - a fourth portion (P4) connecting the first branch (El) to the suction inlet (8) of the ejector (E), said fourth portion (P4) comprising successively, from upstream to downstream, the second expander (D2), the third heat exchanger (3) and a second valve (V2) comprising three channels, a first channel of the second valve ( V2) being connected to the third heat exchanger (3), a second channel of the second valve (V2) being connected to the suction inlet (8) of the ejector (E), - a fifth portion (P5 ) connecting the outlet (9) of the ejector (E) to the third branch (E3), - a sixth portion (P6) connecting a third channel of the second valve (V2) to the second branch (E2).
    [0007]
    7. Circuit according to claim 3 and claim 6, characterized in that the fifth heat exchanger comprises a first portion (5a) equipping the third portion (P3) and located between the first branch (El) and the first expander (D1). ), and a second portion (5b) equipping the second portion (P2) and located between the second branch (E2) and the compressor (Cp), so as to be able to exchange heat between the fluid passing through the first portion (5a) and the fluid passing through the second portion (5b) of the fifth exchanger.
    [0008]
    8. Circuit according to one of claims 1 to 5, characterized in that it comprises: - a first portion (P1) connecting a first branch (El) to the drive input (7) of the ejector (E) said first portion (P1) successively comprising, from upstream to downstream in the direction of circulation of the refrigerant, a first shut-off valve (V1), the pump (P) and the first heat exchanger (1). ), a second portion (P2) connecting a second branch (E2) to the first branch (El), said second portion (E2) successively comprising, from upstream to downstream, the compressor (Cp) and the second exchanger of heat (2), the second portion (P2) having a third branch (E3) located between the compressor (Cp) and the second heat exchanger (2), - a third portion (P3) connecting the first branch (El) at the second branch (E2), said third portion (P3) comprising successively, from upstream to downstream, the first ε regulator (D1) and the fourth heat exchanger (4), the third portion (P3) further comprising a fourth branch (E4) located between the first branch (El) and the first expander (D1), - a fourth portion (P4) connecting the fourth branch (E4) to the suction inlet (8) of the ejector (E), said fourth portion (P4) comprising successively, from upstream to downstream, the second expander (D2) ), the third heat exchanger (3) and a second valve (V2) having three channels, a first channel of the second valve (V2) being connected to the third heat exchanger (3), a second channel of the second valve ( V2) being connected to the suction inlet (8) of the ejector (E), - a fifth portion (P5) connecting the outlet (9) of the ejector (E) to the third branch (E3), - a sixth portion (P6) connecting a third channel of the second valve (V2) to the second branch (E2).
    [0009]
    9. Circuit according to claim 3 and claim 8, characterized in that the fifth heat exchanger comprises a first portion (5a) equipping the third portion (P3) and located between the first branch (E1) and the fourth branch (E4). ), and a second portion (5b) equipping the second portion (P2) and located between the second branch (E2) and the compressor (Cp), so as to be able to exchange heat between the fluid passing through the first part (5a). ) and the fluid passing through the second portion (5b) of the fifth exchanger.
    [0010]
    10. Circuit according to claim 2 and according to one of claims 6 to 9, characterized in that the bottle (B) equips the second portion (P2) and is located between the first branch (El) and the second exchanger heat (2).
    [0011]
    11. Circuit according to claim 4 and according to one of claims 6 to 10, characterized in that the sixth heat exchanger comprises a first portion (6a) equipping the first portion (P1) and located between the pump (P). and the first heat exchanger (1), and a second portion (6b) equipping the second portion (P2) and located between the compressor (Cp) and the third branch (E3), so as to be able to exchange heat between the fluid passing through the first portion (6a) and the fluid flowing through the second portion (6b) of the sixth exchanger.
    [0012]
    12. Motor vehicle comprising a cooling circuit of a heat engine, said cooling circuit using a coolant, and an exhaust line of the combustion gases from the engine, characterized in that it comprises a circuit according to the invention. one of claims 1 to 11, the first heat exchanger (1) being able to exchange heat with the heat transfer fluid of the cooling circuit and / or with the combustion gases of the exhaust line.
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    同族专利:
    公开号 | 公开日
    WO2015121097A1|2015-08-20|
    FR3017450B1|2016-02-12|
    DE112015000750T5|2016-11-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3735386A1|1986-10-22|1988-05-19|Nihon Radiator Co|COOLING SYSTEM WITH A PUMP DRIVED BY HEAT|
    EP0780254A1|1995-12-21|1997-06-25|Valeo Climatisation|Vehicle supplementary heating employing the air conditioning fluid circuit|
    US20110247351A1|2010-04-13|2011-10-13|Gerald Allen Alston|Mechanically Enhanced Ejector HVAC and Electric Power Generation System|
    WO2012055956A1|2010-10-29|2012-05-03|Valeo Systemes Thermiques|Device for thermally conditioning a vehicle drivetrain and a vehicle cabin|WO2017162941A1|2016-03-24|2017-09-28|Valeo Systemes Thermiques|Refrigerant circulation device for thermal conditioning of a motor vehicle|
    WO2017198919A1|2016-05-19|2017-11-23|Valeo Systemes Thermiques|Refrigerant circuit designed for thermal control of an energy source|
    FR3051891A1|2016-05-27|2017-12-01|Valeo Systemes Thermiques|AIR CONDITIONING SYSTEM, IN PARTICULAR FOR A MOTOR VEHICLE|
    FR3079920A1|2018-04-05|2019-10-11|X-Terma|THERMODYNAMIC TYPE THERMOFRIGOPOMPE MACHINE AND METHOD OF OPERATION|
    法律状态:
    2015-03-02| PLFP| Fee payment|Year of fee payment: 2 |
    2016-02-29| PLFP| Fee payment|Year of fee payment: 3 |
    2017-02-28| PLFP| Fee payment|Year of fee payment: 4 |
    2018-02-26| PLFP| Fee payment|Year of fee payment: 5 |
    2019-02-28| PLFP| Fee payment|Year of fee payment: 6 |
    2020-02-28| PLFP| Fee payment|Year of fee payment: 7 |
    2021-11-12| ST| Notification of lapse|Effective date: 20211005 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1451034A|FR3017450B1|2014-02-11|2014-02-11|REFRIGERANT FLUID CIRCUIT FOR THE THERMAL CONDITIONING OF A MOTOR VEHICLE|FR1451034A| FR3017450B1|2014-02-11|2014-02-11|REFRIGERANT FLUID CIRCUIT FOR THE THERMAL CONDITIONING OF A MOTOR VEHICLE|
    PCT/EP2015/052085| WO2015121097A1|2014-02-11|2015-02-02|Refrigerant circuit for the thermal conditioning of a motor vehicle|
    DE112015000750.4T| DE112015000750T5|2014-02-11|2015-02-02|Refrigerant fluid circuit for thermal treatment of a motor vehicle|
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