Air conditioning assembly with regulated injectors

Abstract

In order to provide an air conditioning assembly (10) for heating or cooling a space, particularly a vehicle interior space (110), with a compressor (11) for delivering coolant, and which can also efficiently utilize coolant CO2 for heat pump applications, a high-pressure refrigeration unit (12) for cooling the coolant is arranged downstream of the compressor (11), and a first refrigeration unit (13) for heating the coolant is arranged upstream of the compressor (11), wherein coolant exiting from the high-pressure refrigeration unit (12) can be supplied to the propulsion mass inlet (22) of the first injector (21), and coolant exiting from the low-pressure refrigeration unit (13) can be supplied to the suction mass inlet (23) of the first injector (21), and wherein the outlet (24) of the first injector (21) is directly or indirectly connected to a liquid separator (14).

Description

Technical Field

[0001] The present invention relates to an air conditioning assembly for heating and cooling spaces, particularly vehicle interior spaces, having a compressor for delivering coolant, and a motor vehicle equipped with such an air conditioning assembly. Background Technology

[0002] Air conditioning systems that use CO2 as a refrigerant are already known. These systems are currently limited in their power capacity at higher outside temperatures. Furthermore, alternative refrigerants with better power capacity, such as R1234YF, are used in air conditioning systems. However, this refrigerant is not environmentally friendly and may be flammable and compromise safety depending on the circumstances. Moreover, refrigerants (such as R1234YF) can only be used in limited quantities during heat pump operation.

[0003] US 7,428,826 B2 describes an injector device that controls the flow of coolant into a first evaporator and a second evaporator. A similar injector device is also disclosed in US 7,726,150 B2.

[0004] A coolant circuit with an injector is known from US 7,254,961 B2. The injector is located downstream of a heat exchanger or condenser and acts as a speed reducer for the coolant.

[0005] WO 2018 / 159322 A1 describes an injector with an adjustable nozzle opening via a movable needle.

[0006] JP 2008-082614 A discloses an air conditioning device with an ejector. The air conditioning device has multiple compressors to increase cooling capacity.

[0007] US 7,707,849 B2 discloses a coolant circuit with an injector. The injector is integrally implemented with a first evaporator, a second evaporator, and an adjustment mechanism. Summary of the Invention

[0008] The object of this invention is to provide an air conditioning component that can also efficiently utilize CO2 as a coolant in heat pump applications. In particular, this object is to provide an air conditioning component that can reliably operate using CO2 as a coolant even under extreme climatic conditions.

[0009] This objective is achieved by the air conditioning assembly according to the present invention.

[0010] According to one aspect of the invention, an air conditioning assembly for heating or cooling a space, particularly the interior space of a vehicle, is provided. The air conditioning assembly has a compressor for delivering a coolant. Preferably, the coolant may be CO2. However, the air conditioning assembly is not limited to CO2 as a coolant. In particular, R1234YF, propane, butane, or a mixture of propane and butane, or a mixture of carbon dioxide, can be used as a coolant by the air conditioning assembly.

[0011] The air conditioning unit also includes a high-pressure cooling device (Hochdruckchiller), a low-pressure cooling device, a liquid separator or energy saver, and a regulated first injector.

[0012] A high-pressure cooling device for cooling the coolant is arranged downstream of the compressor, and a low-pressure cooling device for heating the coolant is arranged upstream of the compressor. Alternatively, a gas cooler and / or an internal space condenser may be arranged instead of the high-pressure cooling device to achieve the corresponding functions.

[0013] Coolant from the high-pressure refrigeration unit or from the gas cooler and / or the internal space condenser can be supplied to the propulsion mass inlet of the regulated first ejector, and coolant from the low-pressure cooling unit can be supplied to the suction mass inlet of the first ejector. Furthermore, the outlet of the first ejector is directly or indirectly connected to a liquid separator.

[0014] According to another aspect of the invention, a motor vehicle is provided having an air conditioning assembly according to the invention.

[0015] An air conditioning component can be described, for example, as a CO2 air conditioning system with improved efficiency. Electric vehicles equipped with such an air conditioning component can thus benefit from increased driving range. Here, the air conditioning component enables reliable use of CO2 as a coolant even under extreme climatic conditions.

[0016] The first injector is preferably designed as a regulated injector. A propulsive mass flow with increased pressure relative to the suction mass flow is provided at the propulsive mass inlet of the first injector. Thus, the propulsive mass flow is accelerated by the suction mass flow in the annular gap between the nozzle and the injector needle. The pulse of the propulsive mass flow is transmitted to the suction mass flow after passing through the nozzle. The two mass flows mix here. In the diffuser located behind the first injector, the cross-section is increased, thereby reducing the velocity of the resulting total mass flow and increasing the pressure to the level of the suction mass flow. The diffuser forms the outlet of the first injector.

[0017] By axially displacing the needle relative to the nozzle, the size of the annular gap is adapted to requirements and boundary conditions. This allows for a variable nozzle cross-section. The actuator for adjusting the first injector can be a proportional magnet with a position sensing mechanism, a stepper motor with a spindle drive, a DC motor with a spindle drive, or an actuator based on a shape memory alloy.

[0018] Preferably, the air conditioning components can be used in a combined air conditioning unit and heat pump system in an electric vehicle or battery electric vehicle (BEV). Here, carbon dioxide or CO2 can be used as a coolant, which can be used in both air conditioning unit operation and heat pump operation.

[0019] Due to the structure of the air conditioning components and the properties of CO2, different phase states and phase changes occur within the injector. This can cause pressure surges or pulsations. The variability of the nozzle cross-section can prevent operating points with shock waves or pulsations in two-phase injectors.

[0020] In addition, the increased temperature difference between the evaporator or high-pressure cooling device and the compressor or low-pressure cooling device can be utilized by means of air conditioning components.

[0021] If the outlet of the first injector is indirectly connected to the liquid separator via an interior space evaporator, the efficiency of the air conditioning components can be improved. Thus, cooling power can be supplied to the vehicle interior space, for example, before the coolant reaches the liquid separator. In the liquid separator, preferably designed as a so-called energy-saving device, the coolant can be separated into its gaseous and liquid components. The gaseous component of the coolant is then conveyed or directed toward the compressor, and the liquid component of the coolant is conveyed or directed toward the low-pressure cooling unit.

[0022] According to another embodiment, an internal space evaporator is connected in parallel to a low-pressure cooling unit, wherein an expansion valve is positioned upstream of the internal space evaporator and / or the low-pressure cooling unit. The upstream expansion valve allows for precise control of the inflow of at least partially condensed coolant into the low-pressure cooling unit and / or the internal space evaporator. In particular, some or all of the coolant existing in the liquid phase can be re-evaporated in the internal space evaporator, thereby generating additional cooling power.

[0023] If the coolant outlet of the high-pressure cooling unit or gas cooler is thermally coupled to the coolant inlet of the compressor, especially via an internal heat exchanger, the coolant entering the first injector can be pre-cooled. This measure also eliminates the need for an optional gas cooler in the front end.

[0024] Low-pressure and high-pressure cooling systems are thermally loaded with cooling or heating water to heat or cool the passing coolant. The corresponding heat transfer between the ambient air and the coolant occurs via the cooling water. The efficiency loss due to heat transfer via the cooling water is compensated for by improvements in the efficiency of the air conditioning unit.

[0025] According to another embodiment, the outlet of the first injector is indirectly connected to a liquid separator via a second injector, wherein the outlet of the first injector is connected to the suction mass inlet of the second injector, and the outlet of the second injector is connected to the liquid separator. This allows additional components, particularly an internal space evaporator or an internal space condenser, to be integrated into the air conditioning assembly. The second injector is preferably implemented as a modulated injector, similar in design to the first injector. Thus, the coolant flow can be controlled independently of the first injector via additional integrated components.

[0026] If the air conditioning components are arranged downstream of the compressor or upstream of the compressor, especially downstream of the liquid separator or downstream of the high-pressure cooling unit, and directly or via the internal space condenser or via the internal space heat exchanger to the propulsion mass inlet of the first or second injector, the air conditioning components can be used in a particularly versatile manner.

[0027] According to another embodiment, the outlet of the first injector is connected to the propulsion mass inlet of the second injector, wherein the internal space heat exchanger carries coolant from the upstream branch of the low-pressure cooling device and is connected to the suction mass inlet of the first injector; or wherein the internal space heat exchanger carries coolant from the downstream branch of the high-pressure cooling device and is connected to the suction mass inlet of the second injector. Thus, the internal space heat exchanger can optionally be connected to the high-pressure side or the low-pressure side of the coolant to supply thermal or cooling power to the space, particularly the vehicle interior space.

[0028] If a gas cooler can be connected between the coolant outlet of the high-pressure cooling unit and the propulsion mass inlet of the first injector, or between the coolant outlet of the liquid separator and the propulsion mass inlet of the first injector, the air conditioning unit can also optimally use CO2 as a coolant for hot zone applications. Furthermore, enhanced comfort requirements, which have higher cooling power demands, can be reliably achieved through an additional gas cooler.

[0029] In another embodiment, the coolant outlet of the gas cooler can be connected to the propulsion mass inlet of the second injector. Depending on the design of the air conditioning assembly, the gas cooler can, in principle, be used for heat transfer in any direction. Thus, the gas cooler can be used to extract heat from the coolant or supply heat to the coolant. Attached Figure Description

[0030] The embodiments of the present invention will then be explained in more detail with reference to the accompanying drawings. Wherein:

[0031] Figure 1 A schematic diagram of an air conditioning device according to the first embodiment is shown.

[0032] Figure 2 A schematic diagram of an air conditioning unit according to a second embodiment is shown.

[0033] Figure 3 A schematic diagram of an air conditioning unit according to a third embodiment is shown.

[0034] Figure 4 A schematic diagram of an air conditioning unit according to a fourth embodiment is shown.

[0035] Figure 5 A schematic diagram of an air conditioning unit according to a fifth embodiment is shown.

[0036] Figure 6 shows a schematic diagram of the air conditioning unit according to the sixth embodiment during cooling operation and during heating operation.

[0037] Figure 7 shows a schematic diagram of the air conditioning unit according to the seventh embodiment in cooling operation and in heating operation.

[0038] Figure 8 shows a schematic diagram of the air conditioning unit according to the eighth embodiment during air conditioning operation and during heat pump operation.

[0039] Figure 9 shows a schematic diagram of the air conditioning unit according to the ninth embodiment during air conditioning operation and during heat pump operation.

[0040] Figure 10 shows a schematic diagram of the air conditioning unit according to the tenth embodiment during air conditioning operation, heat pump operation, and reheating operation.

[0041] Figure 11 shows a schematic diagram of the air conditioning unit according to the eleventh embodiment during air conditioning operation and during heating operation.

[0042] Figure 12 shows a schematic diagram of the air conditioning unit according to the twelfth embodiment during air conditioning operation and during heating operation, and

[0043] Figure 13 A side view of a motor vehicle according to an embodiment of the invention, equipped with an air conditioning unit, is shown.

[0044] In the figure, the same structural elements have the same reference numerals. Detailed Implementation

[0045] Figure 1 A schematic diagram of an air conditioning unit 10 according to a first embodiment is shown. The air conditioning unit 10 is used to heat or cool an exemplary vehicle interior space 110, which is... Figure 13 This is indicated in the text.

[0046] The air conditioning assembly 10 has a compressor 11 for delivering a refrigerant. CO2 may be used as the refrigerant, for example. In the illustrated embodiment, the compressor 11 is designed to be an electrically driven compressor.

[0047] A high-pressure cooling device 12 is provided downstream of the compressor 10 for cooling the coolant or for transferring the heat of the coolant to an unpresented water cooling circuit.

[0048] Similar to the high-pressure cooling device 12, a low-pressure cooling device 13 is provided upstream of the compressor 10 for heating the coolant or for extracting heat power from the thermally coupled water cooling circuit.

[0049] Coolant exiting from the high-pressure cooling device 12 is supplied to the propulsion mass inlet 22 of the first injector 21, and coolant exiting from the low-pressure cooling device 13 is supplied to the suction mass inlet 23 of the first injector 20.

[0050] In the presented embodiment, the outlet 24 of the first injector 21 is indirectly connected to the liquid separator 14 via the interior space evaporator 15. The interior space evaporator 15 is preferably thermally coupled to the vehicle interior space 110 and may be circulated by air, for example, by an interior space fan.

[0051] The liquid separator 14 is implemented as an energy saver and can separate the liquid phase and gas phase of the coolant. Accordingly, the gas phase is guided in the direction of the compressor 10 while the liquid phase is guided towards the low-pressure cooling device 13.

[0052] The first injector 21 is designed as an adjustable injector and has an electric actuator 25. The electric actuator 25 is used to adjust the cross section that does not present an annular gap, thereby adjusting the velocity or volumetric flow of the propulsion mass flow supplied through the propulsion mass inlet 22.

[0053] In addition, an expansion valve 16 is arranged between the liquid separator 14 and the low-pressure cooling device 13 to evaporate and thereby cool the coolant supplied to the low-pressure cooling device 13 in liquid phase.

[0054] exist Figure 2 The diagram shows a schematic of an air conditioning unit 10 according to the second embodiment. Unlike the first embodiment, an internal heat exchanger 17 is provided here, which thermally couples the coolant outlet of the high-pressure cooling device 12 with the coolant inlet of the compressor 11.

[0055] Figure 3 A schematic diagram of an air conditioning unit 10 according to a third embodiment is shown. The air conditioning unit 10 according to the third embodiment is based on the previously described embodiment; however, the interior space evaporator 15 is arranged in parallel with the low-pressure cooling unit 13. Here, similar to the low-pressure cooling unit 13, the expansion valve 18 is positioned before the interior space evaporator 15.

[0056] Because the internal space evaporator 15 is arranged in a new position, the first ejector 21, especially the outlet 24 of the first ejector 21, can be connected directly or indirectly to the liquid separator 14.

[0057] Figure 4 A schematic diagram of an air conditioning unit 10 according to a fourth embodiment is shown, which is based on the second embodiment. Here, in the fourth embodiment, similar to the third embodiment, the internal space evaporator 15 is downstream of the liquid separator 14 and connected in parallel with the low-pressure cooling unit 13. An internal heat exchanger 17 is also present, which thermally couples the refrigerant outlet of the high-pressure cooling unit 12 to the refrigerant inlet of the compressor 11.

[0058] Figure 5 The air conditioning unit 10 according to the fifth embodiment is illustrated in the schematic diagram. The air conditioning unit 10 according to the fifth embodiment is based on the third embodiment and has an internal space condenser 19.

[0059] The internal space condenser 19 is arranged in parallel with the high-pressure cooling device 12 downstream of the compressor 11.

[0060] Furthermore, the outlet 24 of the first ejector 21 connects to the suction mass inlet 33 of the second ejector 31. The internal space condenser 19 is connected to the propulsion mass inlet 32 ​​of the second ejector 31. The outlet 34 of the second ejector 31 ultimately connects to the liquid separator 14. Thus, the first ejector 21 is indirectly connected to the liquid separator 14 via the second ejector 31.

[0061] The second injector 31 is similar to the first injector 21 and is designed as an adjustable injector.

[0062] In the fifth embodiment, the branch A1 arranged downstream of the compressor is indirectly connected to the propulsion mass inlet 22 of the second ejector 31 via the internal space condenser 19.

[0063] An internal space condenser 19 is arranged in parallel with the high-pressure cooling device 12, which is configured to heat the intake air of the vehicle interior space 110. A second injection pump or second injector 31 is used to regulate the loading and use of expansion work.

[0064] In the fifth embodiment, heating, cooling, and reheating are achieved through direct heat transfer from the air circulated from the air conditioner to the interior space.

[0065] Figure 6a and Figure 6b A schematic diagram of the air conditioning unit 10 according to the sixth embodiment in cooling operation and heating operation is shown. Figure 6a An air conditioning unit 10 in cooling operation or air conditioning equipment operation is shown here. Figure 6b An air conditioning unit is shown in heating operation.

[0066] The sixth embodiment is based on the first embodiment and extends it by using a second ejector 31 and an internal space heat exchanger 40. The internal space heat exchanger 40 is arranged in parallel with the second ejector 31 and connected to the propulsion mass inlet 32 ​​of the second ejector 31. During cooling operation, the internal space heat exchanger 40 is connected to the second ejector 31 via a liquid separator 14.

[0067] To achieve heated operation, an internal space heat exchanger 40 is required via a branch A1 located downstream of the compressor. In both operating modes, the internal space heat exchanger 40 is connected to the propulsion mass inlet 32 ​​of the second injector 31. An expansion valve 18 is positioned in branch A1.

[0068] The switching of operating modes is achieved via two valves 51 and 52.

[0069] Optionally, an unpresented water heat exchanger or air heater may be provided for the interior space air to ensure reheating operation for drying the air in the vehicle interior space 110.

[0070] For simplicity, Figures 1 to 12b The embodiment shown is based on motor vehicle 100 (see Figure 13 The principle is explained. The air conditioning component 10 is not limited to use in motor vehicle 100.

[0071] exist Figure 7a and Figure 7b The diagram shows a schematic of an air conditioning unit according to the seventh embodiment in cooling operation and in heating operation. Essentially, the seventh embodiment corresponds to the sixth embodiment. In particular, it describes the air conditioning unit used for cooling the vehicle interior space 110 by means of the interior space heat exchanger 40. Figure 7a The operating mode shown corresponds to Figure 6a .

[0072] Figure 7b The difference is that branch A2 is used downstream of the high-pressure cooling device 12 to supply coolant to the internal space heat exchanger 40 and to the propulsion mass inlet 32 ​​of the second injector 31.

[0073] exist Figure 8a and Figure 8b The diagram illustrates the air conditioning unit 10 according to the eighth embodiment during air conditioning operation and during heat pump operation. The eighth embodiment is based on the second embodiment and supplemented by a second ejector 31 arranged in parallel with the internal space heat exchanger 40. The internal space heat exchanger 40 replaces the internal space evaporator 15 here.

[0074] During cooling operation, the internal space heat exchanger 40 is supplied with coolant via a third branch A3 arranged between the low-pressure cooling device 13 and the liquid separator 14. The internal space heat exchanger 40 is connected to the suction mass connection 23 of the first ejector 21.

[0075] exist Figure 8b In the heat pump operation illustrated in the diagram, the internal space heat exchanger 40 is connected in parallel to the propulsion mass connection 22 of the first injector 21 and the suction mass connection 43 of the second injector 31. During heat pump operation, the internal space heat exchanger 40 can be connected in parallel to the high-pressure cooling device 12 via branch A2 and used to heat the vehicle's interior space 110.

[0076] During the cooling operation of the air conditioning unit 10, the expansion valve 18 is positioned in front of the internal space heat exchanger 40.

[0077] In the subsequent embodiments shown in Figures 9 to 12, an additional gas cooler 41 is used. This additional gas cooler 41 may, for example, be located in the front end of the vehicle 100. Here, direct heat transfer between the coolant and the surrounding environment can be achieved. Here, an optional internal heat transfer device 17 may also be used, depending on the design.

[0078] exist Figure 9a and Figure 9b The diagram presents schematic diagrams of the air conditioning unit 10 according to the ninth embodiment during air conditioning operation and during heat pump operation. Essentially, the ninth embodiment is based on the first embodiment and extended by a gas cooler 41, which is integrated in series with the coolant outlet of the high-pressure cooling unit 12 into the coolant circuit.

[0079] The coolant outlet of the gas cooler 41 is connected not only to the propulsion mass inlet 22 of the first injector 21 but also to the coolant outlet of the liquid coolant used in the liquid separator 14.

[0080] Preferably, an unexposed water heat exchanger or air heater may be provided for the interior air of the vehicle interior space 110 to ensure heating and reheating operations for air drying.

[0081] In the presented embodiment, three valves or shut-off valves 51, 52, 53 are required to optionally drive the first injector 21 with coolant exiting from the gas cooler 41 or from the high-pressure cooling device 12.

[0082] Figure 10a , Figure 10b and Figure 10cA schematic diagram of the air conditioning unit 10 according to the tenth embodiment during air conditioning operation, heat pump operation, and reheating operation is shown. The air conditioning unit 10 according to the eighth embodiment is based on the third embodiment and is similar to the tenth embodiment, having three shut-off valves 51, 52, 53 to control the connection between the high-pressure cooling device 12 or the gas cooler 41 and the first injector 21.

[0083] Preferably, the corresponding shut-off valves 51, 52, 53 can be controlled by a controller 54, which can also control, for example, expansion valves 16, 18.

[0084] In the tenth embodiment, heating, cooling, and reheating are achieved through direct heat transfer from the coolant circuit to the vehicle interior space 110.

[0085] Another expansion valve 18 is located downstream of the gas cooler 41 and is used during heat pump operation. The interior space condenser 19 is circulated with coolant during heat pump operation and reheat operation via shut-off valves 51, 52, and 53 to provide thermal power for the vehicle interior space 110.

[0086] During the operation of the air conditioning unit 10, the internal space condenser 19 is decoupled from the refrigerant circuit, and only the internal space evaporator 15 is used to generate cooling power.

[0087] exist Figure 11a and Figure 11b The diagram illustrates the air conditioning unit 10 according to the eleventh embodiment during air conditioning operation and during heating operation. The eleventh embodiment of the air conditioning unit 10 is based on the sixth embodiment. Similarly, depending on whether the interior space heat exchanger 40 is supplied with coolant via a branch A1 located after the compressor 11 or via a liquid separator 14, heat or cold power can be generated in the interior space heat exchanger 40 and discharged to the vehicle interior space 110.

[0088] Because of the additional gas cooler 41, in addition to the two existing shut-off valves 51 and 52, three additional shut-off valves 53, 55, and 56 are required to control the coolant flow.

[0089] Figure 12a and Figure 12b A schematic diagram of the air conditioning unit 10 according to the twelfth embodiment during air conditioning operation and during heating operation is shown. The twelfth embodiment is based on the seventh embodiment and is also supplemented by the gas cooler 41.

[0090] The interior space heat exchanger 40 may optionally be connected in series to the high-pressure cooling device 12 to heat the vehicle interior space 110 during heat pump operation.

[0091] An optional water heat exchanger or air heater is provided for the interior space air to ensure reheating operation for air drying.

[0092] Figure 13 A side view of a motor vehicle 100 according to one embodiment of the invention, equipped with an air conditioning unit 10 according to the invention, is shown. The motor vehicle 100 is preferably designed as an electric vehicle or battery electric vehicle (BEV) and has an interior space 110 that can be heated, cooled, or dehumidified by the air conditioning unit 19.

[0093] List of reference numerals

[0094] 100 motor vehicles

[0095] 110 Vehicle interior space

[0096] 10. Air conditioning unit

[0097] 11 Compressor

[0098] 12 High-pressure cooling device

[0099] 13 Low-pressure cooling device

[0100] 14 Liquid Separator

[0101] 15. Internal space evaporator

[0102] 16 Expansion valve

[0103] 17 Internal heat exchanger

[0104] 18 Expansion valve

[0105] 19. Internal space condenser

[0106] 21 First Injector

[0107] 22 Propulsion mass inlet of the first injector

[0108] 23 The suction mass inlet of the first ejector

[0109] 24. Exit of the first injector

[0110] 25 Electric drive for the first injector

[0111] 31 Second Injector

[0112] 32 Propulsion mass inlet of the second injector

[0113] 33. Suction mass inlet of the second ejector

[0114] 34. Exit of the second injector

[0115] 40 Internal space heat exchanger

[0116] 41 Gas Cooler

[0117] 51 valve / gate valve

[0118] 52 valve / gate valve

[0119] 53 valve / gate valve

[0120] 54 controller

[0121] 55 valve / gate valve

[0122] 56 valve / gate valve

[0123] A1 First Branch

[0124] A2 Second Branch

[0125] A3 Third Branch.

Claims

1. An air conditioning assembly (10) for heating or cooling a space, comprising a compressor (11) for delivering refrigerant, wherein, Downstream of the compressor (11) is a high-pressure cooling device (12) or gas cooler (41) and / or an internal space condenser (19) for cooling the coolant, and upstream of the compressor (11) is a low-pressure cooling device (13) for heating the coolant. Coolant exiting the high-pressure cooling device (12) can be supplied to the propulsion mass inlet (22) of the first ejector (21), and coolant exiting the low-pressure cooling device (13) can be supplied to the suction mass inlet (23) of the first ejector (21). The outlet (24) of the first ejector (21) is indirectly connected to a liquid separator (14) via a second ejector (31), and the outlet (34) of the second ejector (31) is connected to the liquid separator (14). Its features are, Multiple valves (51, 52, 53) are provided, and The outlet (24) of the first ejector (21) is connected to the suction mass inlet (33) of the second ejector (31), and The valves (51, 52, 53) are configured to optionally connect a branch located downstream of the compressor (11), upstream of the compressor (11), or downstream of the high-pressure cooling device (12) to the propulsion mass inlet (32) of the second injector (31) via an internal space heat exchanger (40). Thus, the internal space heat exchanger (40) can be optionally connected to the high-pressure side or the low-pressure side of the coolant by manipulating the valves (51, 52, 53) to supply heat or cold power to the space.

2. The air conditioning component according to claim 1, wherein, An internal space evaporator (15) is connected in parallel to the low-pressure cooling device (13), wherein an expansion valve (16, 18) is positioned in front of the internal space evaporator (15) and / or the low-pressure cooling device (13).

3. The air conditioning assembly according to claim 1 or 2, wherein, The coolant outlet of the high-pressure cooling device (12) or the gas cooler (41) is thermally coupled to the coolant inlet of the compressor (11).

4. The air conditioning assembly according to claim 1 or 2, wherein, A gas cooler (41) may be connected between the coolant outlet of the high-pressure cooling device (12) and the propulsion mass inlet (22) of the first injector (21) or between the coolant outlet of the liquid separator (14) and the propulsion mass inlet (22) of the first injector (21).

5. The air conditioning assembly according to claim 1 or 2, wherein, The coolant outlet of the gas cooler (41) can be connected to the propulsion mass inlet (32) of the second injector (31).

6. An air conditioning assembly (10) for heating or cooling a space, comprising a compressor (11) for delivering refrigerant, wherein, Downstream of the compressor (11) is a high-pressure cooling device (12) or gas cooler (41) and / or an internal space condenser (19) for cooling the coolant, and upstream of the compressor (11) is a low-pressure cooling device (13) for heating the coolant. Coolant exiting the high-pressure cooling device (12) can be supplied to the propulsion mass inlet (22) of the first ejector (21), and coolant exiting the low-pressure cooling device (13) can be supplied to the suction mass inlet (23) of the first ejector (21). The outlet (24) of the first ejector (21) is indirectly connected to a liquid separator (14) via a second ejector (31), and the outlet (34) of the second ejector (31) is connected to the liquid separator (14). Its features are, Multiple valves (51, 52, 53) are provided, and The outlet (24) of the first injector (21) is connected to the propulsion mass inlet (32) of the second injector (31), and The valves (51, 52, 53) are configured such that the internal space heat exchanger (40) carries coolant from the upstream branch of the low-pressure cooling device (13) and is connected to the suction mass inlet (23) of the first injector (21); or wherein the internal space heat exchanger (40) carries coolant from the downstream branch of the high-pressure cooling device (12) and is connected to the suction mass inlet (33) of the second injector (31). Thus, the internal space heat exchanger (40) can be optionally connected to the high-pressure side or the low-pressure side of the coolant by manipulating the valves (51, 52, 53) to supply heat or cold power to the space.

7. A motor vehicle (100) having an air conditioning assembly (10) according to any one of the preceding claims.

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