• 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 double-stage refrigerant circuit comprising a first heat exchanger (1) forming a condenser, a second heat exchanger (2) forming an evaporator, a first compressor (C1) and a second compressor (C2). ), a first expander (D1), a second expander (D2), a bottle (B) adapted to separate the liquid phase and the gaseous phase of the refrigerant, characterized in that it comprises a third heat exchanger (3) forming an evaporator.
    公开号:FR3020130A1
    申请号:FR1453406
    申请日:2014-04-16
    公开日:2015-10-23
    发明作者:Mohamed Yahia
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    [0001] BACKGROUND OF THE INVENTION The present invention relates to a refrigerant circuit, intended for example to equip a thermal conditioning device.
    [0002] The present invention relates more particularly, but not exclusively, to the thermal conditioning of a passenger compartment of a motor vehicle. Such a thermal conditioning device may in particular provide the heating function of an air flow.
    [0003] There is a need to improve the efficiency of such a refrigerant circuit. The invention aims in particular to provide a simple, effective and economical solution to this problem. For this purpose, it proposes a refrigerant circuit comprising a first heat exchanger forming a condenser, a second heat exchanger forming an evaporator, a first compressor, a second compressor, a first expander, a second expander, a bottle adapted to separating the liquid phase and the gas phase from the refrigerant, characterized in that it comprises a third heat exchanger forming an evaporator and means for redirecting the flow of refrigerant capable of circulating the refrigerant in a through loop at least successively the first compressor, the first heat exchanger, the first expander, the bottle, the gas phase of the refrigerant from the bottle being mixed with a first portion of the liquid phase of the refrigerant from the bottle before passing through the third heat exchanger and then again the first compressor, while a e second part of the liquid phase of the refrigerant from the bottle passes through the second expander, the second heat exchanger and the second compressor before crossing again the first compressor.
    [0004] The invention thus makes it possible to enhance the intermediate stage of the circuit, by passing two-phase refrigerant fluid from the bottle through the third heat exchanger, which can then ensure the cooling of an element at a moderate temperature level. such as for example the cooling of a battery or a power electronics of a vehicle. In a first embodiment, the first heat exchanger may be able to exchange heat between the refrigerant and air intended to open into a passenger compartment of a vehicle, for example, the second heat exchanger being suitable exchanging heat with air outside the vehicle, the third heat exchanger being adapted to exchange heat with a vehicle element, such as a battery or a power electronics. In this first embodiment, calories can be drawn from the outside air, using the second heat exchanger, and at the aforementioned element, using the third heat exchanger, the calories removed. which can then be transferred to the air flow for the passenger compartment via the first heat exchanger.
    [0005] In a second embodiment, the first heat exchanger may be able to exchange heat between the refrigerant and the air outside the vehicle, the second heat exchanger being able to exchange heat with air intended to open into a passenger compartment of the vehicle, the third heat exchanger being able to exchange heat with a vehicle element, such as for example a battery or a power electronics. In this second embodiment, calories can be drawn into the air intended for the passenger compartment, so as to cool or to cool, using the first heat exchanger, calories can also be drawn at the level of the aforementioned element, using the third heat exchanger, the calories removed can then be discharged into the outside air, through the second heat exchanger. According to a possible characteristic of the invention, the circuit may comprise a flow control member, the first part of the liquid phase of the refrigerant coming from the bottle passing through the flow control member before being mixed with the phase gaseous refrigerant fluid from the bottle. In this case, the flow control member may be a valve or a calibrated orifice.
    [0006] In addition, the circuit may comprise: a first portion forming a loop extending from the output of the first compressor to the inlet of the first compressor and successively comprising the first heat exchanger, the first expander, the bottle, a first branch; , the second expander, the second heat exchanger, the second compressor, and a second branch, - a second portion extending from the bottle to the second branch and comprising successively, from the bottle to the second branch, a third branch and the third heat exchanger; a third portion extending from the first branch to the third branch. In addition, the third portion may include the flow control member. The invention also relates to a device for thermal conditioning of a space, comprising a refrigerant circuit of the aforementioned type, characterized in that the first heat exchanger is able to exchange heat between the refrigerant and the refrigerant. air intended to open into said space, the second heat exchanger being able to exchange heat with air outside said space, the third heat exchanger being able to exchange heat with an element, for example such that a battery or power electronics. In this case, the first heat exchanger is for example disposed in an air circulation duct of a heating, ventilation and / or air conditioning system, also called H.V.A.C. (Heating, Ventilation and Air-Conditioning, in English), said channel being intended to open for example in a passenger compartment of a vehicle, the aforementioned space then being formed by said passenger compartment. In this case also, the second heat exchanger can be disposed on the front of the vehicle. The third heat exchanger can then exchange heat with a battery and / or with a power electronics, directly or indirectly (that is to say via a coolant circuit, for example). Alternatively, the first heat exchanger is able to exchange heat between the refrigerant and air outside said space, the second heat exchanger being able to exchange heat with air to open into said space, the third heat exchanger being able to exchange heat with an element, such as a battery or a power electronics.
    [0007] In this case, the second heat exchanger is for example disposed in an air circulation channel of a heating, ventilation and / or air conditioning (HVAC) installation, said channel being intended to open into a passenger compartment of a vehicle , the aforementioned space then being formed by said passenger compartment. In this case also, the first heat exchanger can be disposed on the front of the vehicle. The third heat exchanger can exchange heat with said vehicle element, directly or indirectly (i.e. via a coolant circuit). The invention also relates to a motor vehicle 30 comprising a thermal conditioning device of the aforementioned type, said space being a passenger compartment of the motor vehicle.
    [0008] The invention finally relates to a method of operating a refrigerant circuit comprising a first heat exchanger forming a condenser, a second heat exchanger forming an evaporator, a third heat exchanger forming an evaporator, a first compressor, a second compressor, a first expander, a second expander, a bottle adapted to separate the liquid phase and the gas phase of the refrigerant, and means for redirecting the flow of refrigerant, the process comprising at least one step of circulating the refrigerant at the less successively through the first compressor, the first heat exchanger, the first expander, the bottle, the gas phase of the refrigerant from the bottle being mixed with a first portion of the liquid phase of the refrigerant from the bottle before to cross the third heat exchanger and then again the first com pressure, while a second portion of the liquid phase of the refrigerant from the bottle through the second expander, the second heat exchanger and the second compressor before crossing again the first compressor. The invention will be better understood and other details, features and advantages of the invention will appear on reading the following description given by way of non-limiting example with reference to the accompanying drawings, in which: FIG. schematic view illustrating a thermal conditioning device according to the invention, - Figure 2 is a Mollier diagram illustrating the operation of the device of Figure 1. Figure 1 illustrates a device for thermal conditioning of a passenger compartment of a vehicle automobile comprising a refrigerant circuit comprising a first heat exchanger 1 forming a condenser, a second heat exchanger 2 forming an evaporator, a third heat exchanger 3 forming an evaporator, a first compressor C1, a second compressor C2, a first expander D1, a second expander D2, a bottle B adapted to separate the liquid phase and the gaseous phase of the fluid e refrigerant and a valve V able to control the flow of refrigerant. The valve V can be controlled.
    [0009] More particularly, the refrigerant circuit comprises a first portion P1 forming a loop extending from the output of the first compressor C1 to the inlet of the first compressor C1 and successively comprising the first heat exchanger 1, the first expander D1, the first bottle B, a first branch E1, the second expander D2, the second exchanger 2, the second compressor C2, and a second branch E2; - a second portion P2 extending from the bottle B to the second branch E2 and comprising successively , from the bottle B to the second branch E2, a third branch E3 15 and the third heat exchanger 3, - a third portion P3 extending from the first branch E1 to the third branch E3, said third section P2 comprising the valve V. In operation, the refrigerant circulates in a loop 20 passing through the first compressor C1, the first heat exchanger 1, the first expander D1, the bottle B, the gaseous phase of the refrigerant from the bottle B being mixed with a first portion of the liquid phase of the refrigerant from the bottle B before passing through the third heat exchanger 3 and again the first compressor C1, while a second portion of the liquid phase of the refrigerant from the bottle B passes through the second expander D2, the second heat exchanger 2 and the second compressor C2 before crossing again the first C1 compressor. The invention thus makes it possible to upgrade the intermediate stage of the device by passing two-phase refrigerant (mixture of the gaseous phase and the first part of the liquid phase) from the bottle B through the third heat exchanger. 3, for example to ensure a cooling of a vehicle element at a level of average evaporation temperature higher than the evaporation temperature in the second heat exchanger 2.
    [0010] In a first embodiment of the invention, the first heat exchanger 1 exchanges heat between the refrigerant and air intended to open into a passenger compartment of the vehicle, the second heat exchanger 2 exchanging heat with outside air to the vehicle, the third heat exchanger 3 exchanging heat with a vehicle element, such as a battery or a power electronics. In this embodiment, the first heat exchanger 1 is for example disposed in an air circulation channel of a heating, ventilation and / or air conditioning system, also called H.V.A.C. (Heating, Ventilation and Air-Conditioning, in English), said channel being intended to open into the passenger compartment of the vehicle. In this case also, the second heat exchanger 2 can be disposed on the front of the vehicle. Thus, in the first embodiment, calories can be drawn from the outside air, using the second heat exchanger 2, and at the level of said vehicle element, using the third heat exchanger 3, these calories can then be transferred to the flow of air for the passenger compartment via the first heat exchanger 1.
    [0011] In a second embodiment, the first heat exchanger 1 exchanges heat between the refrigerant and the air outside the vehicle, the second heat exchanger 2 exchanging heat with air intended to open into a the passenger compartment of the vehicle, the third heat exchanger 3 exchanging heat with a vehicle element, such as a battery or power electronics.
    [0012] In this embodiment, the second heat exchanger 2 is for example disposed in an air circulation channel of a heating, ventilation and / or air conditioning (HVAC) installation, said channel being intended to open into the passenger compartment. of the vehicle. In this case also, the first heat exchanger 1 can be disposed in front of the vehicle. In this second embodiment, calories can be drawn from the outside air using the first heat exchanger 1, and at the level of the vehicle element, using the third heat exchanger 3, these calories that can then be transferred to the flow of air for the passenger compartment, through the second heat exchanger 2. The thermodynamic cycle corresponding to the two embodiments mentioned above is illustrated in the Mollier diagram of FIG. this diagram and on the following diagrams, the abscissa is formed by the enthalpy h and the ordinate is formed by the pressure p of the refrigerant. In addition, in this diagram, points referenced 11 to 10 have been reported both on the Mollier diagram and on the refrigerant circuit illustrated in Figure 1 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).
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. Refrigerant circuit comprising a first heat exchanger (1) forming a condenser, a second heat exchanger (2) forming an evaporator, a first compressor (C1), a second compressor (C2), a first expander (D1), a second expander (D2), a bottle (B) adapted to separate the liquid phase and the gaseous phase of the refrigerant, characterized in that it comprises a third heat exchanger (3) forming an evaporator and means for redirecting the flow of refrigerant capable of circulating the refrigerant in a loop through at least successively the first compressor (C1), the first heat exchanger (1), the first expander (D1), the bottle (B), the gas phase refrigerant from the bottle (B) being mixed with a first portion of the liquid phase of the refrigerant from the bottle (B) before passing through the third heat exchanger (3) and again the first compressor (C1), while a second portion of the liquid phase of the refrigerant from the bottle (B) passes through the second expander (D2), the second heat exchanger (2) and the second compressor (C2) before crossing again the first compressor (C1).
    [0002]
    2. Circuit according to claim 1, characterized in that it comprises a refrigerant flow rate control unit (V), the first portion of the liquid phase of the refrigerant from the bottle (B) passing through the control of the flow (V) before being mixed with the gaseous phase of the refrigerant coming from the bottle (B).
    [0003]
    3. Circuit according to claim 2, characterized in that the flow control member (V) is a valve (V) or a calibrated orifice.
    [0004]
    4. Circuit according to one of claims 1 to 3, characterized in that it comprises: - a first portion (P1) forming a loop extending from the output of the first compressor (C1) to the input of the first compressor (C1) and successively comprising the first heat exchanger (1), the first expander (D1), the bottle (B), a first branch (El), the second expander (D2), the second heat exchanger (2) ), the second compressor (C2), and a second branch (E2), - a second portion (P2) extending from the bottle (B) to the second branch (E2) and comprising successively, from the bottle (B) to the second branch (E2), a third branch (E3) and the third heat exchanger (3), - a third portion (P3) extending from the first branch (E1) to the third branch (E3).
    [0005]
    5. Circuit according to claims 2 and 4, characterized in that the third portion (P3) comprises the flow control member (V). 15
    [0006]
    6. Device for thermal conditioning of a space, comprising a refrigerant circuit according to one of claims 1 to 5, characterized in that the first heat exchanger (1) is able to exchange heat between the refrigerant and air intended to open into said space, the second heat exchanger (2) being able to exchange heat with air outside said space, the third heat exchanger (3) being able to exchange heat heat with an element.
    [0007]
    7. Device for thermal conditioning of a space, comprising a refrigerant circuit according to one of claims 1 to 5, characterized in that the first heat exchanger (1) is able to exchange heat between the fluid refrigerant and air outside said space, the second heat exchanger (2) being able to exchange heat with air intended to open into said space, the third heat exchanger (3) being able to exchange heat with an element.
    [0008]
    8. A motor vehicle comprising a thermal conditioning device according to claim 6 or 7, said space being a passenger compartment of the motor vehicle.
    [0009]
    9. A method of operating a refrigerant circuit comprising a first heat exchanger (1) forming a condenser, a second heat exchanger (2) forming an evaporator, a third heat exchanger (3) forming an evaporator, a first compressor (C1), a second compressor (C2), a first expander (D1), a second expander (D2), a bottle (B) adapted to separate the liquid phase and the gas phase of the refrigerant, and means for redirection of the refrigerant flow, the process comprising at least one step of circulating the refrigerant at least successively through the first compressor (C1), the first heat exchanger (1), the first expander (D1), the bottle (B), the gaseous phase of the refrigerant coming from the bottle (B) being mixed with a first part of the liquid phase of the refrigerant coming from the bottle (B) before passing through the third heat exchanger their (3) then again the first compressor (C1), while a second portion of the liquid phase of the refrigerant from the bottle (B) passes through the second expander (D2), the second heat exchanger (2) and the second compressor (C2) before crossing again the first compressor (C1).
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    同族专利:
    公开号 | 公开日
    JP2015203563A|2015-11-16|
    EP2933584A1|2015-10-21|
    FR3020130B1|2019-03-22|
    CN105004087A|2015-10-28|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0541328A1|1991-11-04|1993-05-12|General Electric Company|Refrigeration systems|
    WO2010039682A2|2008-10-01|2010-04-08|Carrier Corporation|Liquid vapor separation in transcritical refrigerant cycle|CN108291749A|2015-11-16|2018-07-17|艾默生环境优化技术有限公司|Compressor with cooling system|
    US10598395B2|2018-05-15|2020-03-24|Emerson Climate Technologies, Inc.|Climate-control system with ground loop|
    US11149971B2|2018-02-23|2021-10-19|Emerson Climate Technologies, Inc.|Climate-control system with thermal storage device|JPS5791071U|1980-11-25|1982-06-04|
    JPS6256416B2|1981-03-31|1987-11-25|Hitachi Ltd|
    JP3334195B2|1992-11-30|2002-10-15|松下電器産業株式会社|Heat pump type air conditioner for vehicles|
    JP2005214575A|2004-02-02|2005-08-11|Sanyo Electric Co Ltd|Refrigerator|
    DE102010042127B4|2010-10-07|2020-09-17|Audi Ag|Refrigerant circuit of an air conditioning system of a motor vehicle|
    JP5375919B2|2011-09-30|2013-12-25|ダイキン工業株式会社|heat pump|CN105605817B|2016-03-14|2018-04-20|珠海格力节能环保制冷技术研究中心有限公司|A kind of refrigeration system|
    CN109416205B|2016-06-17|2021-10-15|开利公司|Hot gas bypass for cold start of battery pack|
    FR3055250B1|2016-08-30|2018-08-10|Valeo Systemes Thermiques|INDIRECT INDIRECT AIR CONDITIONING CIRCUIT FOR A MOTOR VEHICLE AND METHOD OF OPERATING THE SAME|
    JP6826959B2|2017-07-12|2021-02-10|荏原冷熱システム株式会社|Compressed refrigerator|
    FR3071047B1|2017-09-11|2020-06-19|Valeo Systemes Thermiques|REFRIGERANT FLUID CIRCUIT COMPRISING A CIRCULATOR|
    DE102018101514B4|2018-01-24|2021-07-29|Hanon Systems|Motor vehicle refrigeration system with several evaporators of different cooling capacities|
    FR3079920B1|2018-04-05|2020-05-08|X-Terma|THERMODYNAMIC MACHINE OF THE THERMOFRIGOPUMP TYPE AND OPERATING METHOD|
    WO2021047125A1|2019-09-10|2021-03-18|李华玉|Reverse single-working-medium steam combined cycle|
    DE102020201348A1|2020-02-04|2021-08-05|Volkswagen Aktiengesellschaft|Refrigerant circuit and method for operating a refrigerant circuit|
    CN112297769B|2020-11-05|2021-12-21|华南理工大学|All-weather electric automobile heat pump air-conditioning system|
    法律状态:
    2016-04-28| PLFP| Fee payment|Year of fee payment: 3 |
    2017-04-28| PLFP| Fee payment|Year of fee payment: 4 |
    2018-04-26| PLFP| Fee payment|Year of fee payment: 5 |
    2019-04-29| PLFP| Fee payment|Year of fee payment: 6 |
    2020-04-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-04-29| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1453406A|FR3020130B1|2014-04-16|2014-04-16|FRIGORIGENE FLUID CIRCUIT|
    FR1453406|2014-04-16|FR1453406A| FR3020130B1|2014-04-16|2014-04-16|FRIGORIGENE FLUID CIRCUIT|
    EP15160167.1A| EP2933584B1|2014-04-16|2015-03-20|Coolant circuit|
    JP2015083277A| JP2015203563A|2014-04-16|2015-04-15|Refrigerant circulation path|
    CN201510181577.1A| CN105004087A|2014-04-16|2015-04-16|Coolant circuit|
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