CN216308293U - Vehicle and air conditioning system thereof - Google Patents
Vehicle and air conditioning system thereof Download PDFInfo
- Publication number
- CN216308293U CN216308293U CN202122793220.2U CN202122793220U CN216308293U CN 216308293 U CN216308293 U CN 216308293U CN 202122793220 U CN202122793220 U CN 202122793220U CN 216308293 U CN216308293 U CN 216308293U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- electronic expansion
- conditioning system
- air conditioning
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model relates to the technical field of air conditioners, and particularly provides a vehicle and an air conditioning system thereof, wherein the vehicle comprises a heating component, the air conditioning system comprises a compressor, an in-cabin heat exchanger assembly, an out-cabin heat exchanger, an intermediate heat exchanger and a pipeline, wherein the compressor is provided with a jet enthalpy increasing part, the in-cabin heat exchanger assembly comprises a first in-cabin heat exchanger, and heat can be transferred between the intermediate heat exchanger and the heating component; the air conditioning system includes a switching portion including: the two switching units corresponding to the extravehicular heat exchanger and the intermediate heat exchanger respectively comprise a shutoff valve and an electronic expansion valve which are connected in parallel, and the states of the extravehicular heat exchanger and the intermediate heat exchanger in the pipeline can be correspondingly adjusted by switching the on-off states of the shutoff valve and the electronic expansion valve. With this arrangement, the operating state of the air conditioning system can be switched by two pairs of the shutoff valve and the electronic expansion valve connected in parallel.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a vehicle and an air conditioning system thereof.
Background
An air conditioning system (air source heat pump) mainly comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger and a throttling part (such as a capillary tube, an electronic expansion valve and the like) which form a refrigerant main loop, and cold/heat can be distributed to the surface of the indoor heat exchanger along with the phase change of the refrigerant through the circulating flow of the refrigerant in the loop formed by the compressor, a condenser, the throttling part, an evaporator and the compressor. Among them, the air conditioning system generally has a conventional cooling mode and a heating mode, specifically: when the refrigerant circulates along the loop of the compressor → the indoor heat exchanger → the outdoor heat exchanger → the compressor, the air conditioning system is in a heating cycle (in case the air conditioning system is in a heating mode, the indoor heat exchanger serves as a condenser that emits heat); and when the refrigerant circulates along the circuit of the compressor → the outdoor heat exchanger → the indoor heat exchanger → the compressor, the air conditioning system is in a refrigerating cycle (in a case where the air conditioning system is in a refrigerating mode, the indoor heat exchanger serves as an evaporator for distributing the cooling capacity).
The traditional air conditioning system is difficult to adapt to the low-temperature working condition when the outdoor environment is lower or extremely low, and the main reasons are as follows: when the air source heat pump works under the low-temperature working condition, the normal operation of the air source heat pump is influenced because the exhaust pressure of the compressor is too high. In order to solve the problem that the traditional air source heat pump has high compression ratio and high exhaust temperature due to excessively low outdoor environment temperature, an enhanced vapor injection technology is introduced into an air conditioning system. The main principle of the enhanced vapor injection technology is as follows: the high compression ratio and high exhaust temperature problem caused by low-temperature working conditions are solved by the principle of quasi-two-stage compression intercooling.
Unlike conventional home/commercial air conditioning systems, when the air conditioning system is applied to a vehicle, there are cooling and heating requirements including not only drivers and passengers in the vehicle cabin but also heat transfer requirements such as the need for waste heat recovery of a motor, a power battery, and the like. Under the precondition, how to apply the air conditioning system with the enhanced vapor injection technology to the vehicle is a problem to be solved or better solved.
Accordingly, there is a need in the art for a new solution to the above problems.
SUMMERY OF THE UTILITY MODEL
Technical problem
The present invention has been made to solve at least some of the above-mentioned problems occurring in the prior art.
Technical scheme
In view of the above, a first aspect of the present invention provides an air conditioning system for a vehicle, the vehicle including a heat generating component, the air conditioning system including a compressor, an indoor heat exchanger assembly, an outdoor heat exchanger, an intermediate heat exchanger, and piping, wherein the compressor is provided with a vapor injection enthalpy increasing portion, the indoor heat exchanger assembly includes a first indoor heat exchanger, and heat can be transferred between the intermediate heat exchanger and the heat generating component; the air conditioning system includes a switching portion including: the first switching unit corresponds to the outdoor heat exchanger and comprises a first cutoff valve and a first electronic expansion valve which are connected in parallel, and the state of the outdoor heat exchanger in the pipeline can be adjusted by switching the on-off states of the first cutoff valve and the first electronic expansion valve; and the second switching unit corresponds to the second switching unit of the intermediate heat exchanger and comprises a second shutoff valve and a second electronic expansion valve which are connected in parallel, and the state of the intermediate heat exchanger in the pipeline can be adjusted by switching the on-off states of the second shutoff valve and the second electronic expansion valve.
With this arrangement, the operating state of the air conditioning system can be switched by two pairs of the shutoff valve and the electronic expansion valve connected in parallel.
With regard to the above air conditioning system, in a possible implementation manner, the exhaust port of the compressor is connected to the first side of the first indoor heat exchanger, the second side of the first indoor heat exchanger is connected to the first side of the outdoor heat exchanger through the first electronic expansion valve, the second side of the outdoor heat exchanger is connected to the first side of the intermediate heat exchanger through the second shutoff valve, and the second side of the intermediate heat exchanger is connected to the return port of the compressor.
By this arrangement, a first possible connection state of the air conditioning system in the heating mode is given.
With regard to the above air conditioning system, in a possible embodiment, the switching portion further includes a third cut-off valve, a first end of the third cut-off valve is connected between the enhanced vapor injection portion and the first switching unit, and a second end of the third cut-off valve is connected between the second switching unit and the cabin heat exchanger assembly.
With this arrangement, a specific arrangement form of the switching section is given.
With regard to the above air conditioning system, in a possible implementation manner, the exhaust port of the compressor is connected to the first side of the first cabin heat exchanger, the second side of the first cabin heat exchanger is connected to the first side of the intermediate heat exchanger through the third throttle valve and the second electronic expansion valve in sequence, and the second side of the intermediate heat exchanger is connected to the return air port of the compressor.
With this arrangement, a second possible connection state is given when the air conditioning system is in the heating mode.
With respect to the above air conditioning system, in one possible embodiment, the exhaust port of the compressor is connected to the first side of the first cabin heat exchanger, and the second side of the first cabin heat exchanger is connected to the second electronic expansion valve in two ways: 1) directly through the third shut-off valve to the second electronic expansion valve; 2) the first electronic expansion valve is connected with the outdoor heat exchanger through the first throttle valve; and the second electronic expansion valve is connected to a return air port of the compressor through the intermediate heat exchanger.
With this arrangement, a third possible connection state of the air conditioning system in the heating mode is provided.
With regard to the above air conditioning system, in one possible embodiment, the cabin heat exchanger assembly includes a second cabin heat exchanger, and the switching part further includes a third electronic expansion valve disposed in the second cabin heat exchanger.
With this arrangement, a specific arrangement form of the switching section is given.
In addition, the operation reliability of the air conditioning system can be ensured when the second cabin heat exchanger is used as the evaporator.
With regard to the above air conditioning system, in one possible embodiment, the switching portion further includes a check valve, a first end of which is disposed between the third electronic expansion valve and the second switching unit, a second end of which is disposed between the discharge port of the compressor and the first side of the first cabin heat exchanger, and which is defined to allow conduction only from the first end to the second end.
With this arrangement, a specific form of the switching section is given.
With regard to the above air conditioning system, in a possible embodiment, the exhaust port of the compressor is connected to the first side of the first indoor heat exchanger, the second side of the first indoor heat exchanger is connected to the first side of the outdoor heat exchanger through the first throttle valve, the second side of the outdoor heat exchanger is connected to the first side of the second indoor heat exchanger through the third electronic expansion valve, and the second side of the second indoor heat exchanger is connected to the return port of the compressor.
With this arrangement, a feasible connection state of the air conditioning system in the cooling mode is given.
For the above air conditioning system, in a possible implementation manner, the enhanced vapor injection unit includes a flash tank and an auxiliary electronic expansion valve, the condenser in the refrigerant circulation loop is connected to an inlet of the flash tank, the auxiliary electronic expansion valve is disposed between the flash tank and the auxiliary electronic expansion valve, and an air outlet and a liquid outlet of the flash tank are respectively connected to an air jet of the compressor and an evaporator in the refrigerant circulation loop.
By means of the arrangement, a specific structural form of the enhanced vapor injection part is given.
A second aspect of the utility model provides a vehicle provided with an air conditioning system of the vehicle of any one of the preceding claims.
It is understood that the vehicle has all the technical effects of the air conditioning system of the vehicle described in any one of the foregoing, and the details are not repeated herein.
Drawings
The air conditioning system of the present invention will be described with reference to the accompanying drawings in conjunction with a vehicle. In the drawings:
fig. 1 shows a schematic configuration diagram of an air conditioning system according to an embodiment of the present invention;
FIG. 2 illustrates a schematic diagram of an air conditioning system of an embodiment of the present invention when in a cooling mode;
FIG. 3 is a schematic diagram illustrating an embodiment of the present invention in a heating mode in which the intermediate heat exchanger does not recover waste heat;
fig. 4 is a schematic diagram illustrating a second principle of the air conditioning system according to an embodiment of the present invention when the air conditioning system is in a heating mode, in which the intermediate heat exchanger recovers waste heat and the outdoor heat exchanger is not in a refrigerant circulation loop; and
fig. 5 is a schematic diagram showing a third principle of the air conditioning system according to an embodiment of the present invention when the air conditioning system is in a heating mode, in which the intermediate heat exchanger recovers waste heat and the outdoor heat exchanger is in a refrigerant circulation loop.
List of reference numerals:
100. an air conditioning system; 1. a compressor; 21. a flash tank; 22. an auxiliary electronic expansion valve; 31. a first cabin heat exchanger; 32. a second cabin heat exchanger; 33. a fan; 34. a barrier member; 4. an extravehicular heat exchanger; 5. an intermediate heat exchanger; 61. a first electronic expansion valve; 62. a second electronic expansion valve; 63. a third electronic expansion valve; 71. a first shut-off valve; 72. a second shut-off valve; 73. a third shut-off valve; 74. a one-way valve; 8. a gas-liquid separator.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, while the present embodiment has been described in connection with a combination of three shut-off valves, three electronic expansion valves, and a one-way valve, this is not intended to limit the scope of the utility model, which can be modified as needed by those skilled in the art to suit particular applications without departing from the principles of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The singular forms "a", "an" and "the" may include the plural forms as well.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, while numerous specific details are set forth in the following description in order to provide a better understanding of the utility model, it will be apparent to those skilled in the art that the utility model may be practiced without some of these specific details. In some instances, cooktop principles and the like well known to those skilled in the art have not been described in detail in order to highlight the subject matter of the utility model.
Referring to fig. 1, fig. 1 is a schematic structural view illustrating an air conditioning system according to an embodiment of the present invention. As shown in fig. 1, the vehicle is provided with an air conditioning system 100 mainly including a compressor 1, a jet enthalpy increasing portion, a first cabin interior heat exchanger 31, a second cabin interior heat exchanger 32, an cabin exterior heat exchanger 4, an intermediate heat exchanger 5, a throttle component group, and a valve group. Wherein, first under-deck heat exchanger and second under-deck heat exchanger are independent each other and all can communicate with the cockpit, like in this embodiment, second under-deck heat exchanger disposes fan 33, is provided with between first under-deck heat exchanger and the second under-deck heat exchanger and keeps off component 34. The intermediate heat exchanger can recover waste heat of heating components such as a motor and a power battery of a vehicle in a mode of forming a water source heat pump, and for example, the recovered heat can be transferred to a heat supply requirement for meeting drivers and passengers in a cab.
The throttling component group mainly comprises a first electronic expansion valve 61 and a second electronic expansion valve 62, wherein the first electronic expansion valve is used for throttling the refrigerant before the refrigerant enters the extravehicular heat exchanger, and the second electronic expansion valve is used for throttling the refrigerant before the refrigerant enters the intermediate heat exchanger. In addition, the throttling component group also comprises a third electronic expansion valve which is used for throttling the refrigerant together before the refrigerant enters the intermediate heat exchanger and the extravehicular heat exchanger (corresponding to a refrigeration mode in the following).
Wherein the valve group mainly includes a first shutoff valve 71 and a second shutoff valve 72 respectively provided in parallel with the first electronic expansion valve 61 and the second electronic expansion valve 62 so that: with the first and second shut-off valves 71, 72 closed, the first/second electronic expansion valves are allowed to throttle the refrigerant before it enters the extravehicular/intermediate heat exchanger.
The first electronic expansion valve 61 and the first cutoff valve 71 which are connected in parallel form a first switching unit corresponding to the outdoor heat exchanger, so that the state of the outdoor heat exchanger in the refrigerant circulation pipeline can be adjusted by switching the on-off states of the first cutoff valve and the first electronic expansion valve; the second electronic expansion valve 62 and the second shut-off valve 72 connected in parallel constitute second switching means corresponding to the intermediate heat exchanger, and the state of the intermediate heat exchanger in the refrigerant circulation line can be adjusted by switching the on/off states of the second shut-off valve and the second electronic expansion valve. The first switching unit and the second switching unit constitute one possible embodiment of a switching section of the air conditioning system.
The switching of the air conditioning system between its allowed modes can be achieved by controlling the state of the switching part by a control module, such as an MCU of the vehicle or a separate control module configured for the air conditioning system, based on the setting of the switching part.
The enhanced vapor injection part (described in connection with a heating mode in which the intermediate heat exchanger does not participate in heat exchange) mainly comprises a flash tank 21 and an auxiliary electronic expansion valve 22, a high-temperature and high-pressure gaseous refrigerant discharged from an exhaust port of the compressor is condensed and cooled by a condenser (a second cabin heat exchanger), heat released by condensation is transferred to air in a cab, and the air in the cab absorbs heat and is heated to meet the heating requirements of drivers and passengers in the cab. The condensed refrigerant loop is divided into two paths: the main loop is a refrigeration loop corresponding to a traditional refrigerant loop, and the auxiliary loop is a jet loop strongly related to improving the compression ratio and the exhaust temperature of the compressor. In the air injection loop, the liquid refrigerant flowing out of the condenser is decompressed to a certain intermediate pressure by the auxiliary electronic expansion valve and then is changed into a medium-pressure air-liquid mixed refrigerant, and the mixed refrigerant and the liquid refrigerant with higher temperature from the refrigeration loop generate heat exchange in the flash tank. Thus, the mixed refrigerant in the jet loop absorbs heat and turns into gaseous refrigerant, and the gaseous refrigerant is supplied to the working cavity of the compressor through the jet port of the compressor. Meanwhile, the liquid refrigerant of the refrigeration circuit can be fully supercooled, and the supercooled liquid refrigerant enters an evaporator (an extravehicular heat exchanger) after passing through a first electronic expansion valve in the throttling component group. In the evaporator, the refrigerant in the main circuit absorbs heat from the low temperature environment and turns into low pressure gas which enters the working chamber of the compressor through the return air port of the compressor. In this way, the gas entering the working chamber of the compressor comprises a mixture of the first part coming from the refrigeration circuit and the second part coming from the gas injection circuit. With the rotation of the working chamber, the two parts of gaseous refrigerant are mixed in the working chamber of the compressor, further compressed and discharged out of the compressor again (introduced into the condenser), thus forming a complete closed cycle. On one hand, the flash tank carries out supercooling treatment on the liquid refrigerant in the main loop before throttling, so that the enthalpy difference of the refrigerant is increased; on the other hand, the throttled refrigerant in the auxiliary loop is properly preheated, and is converted back to the compressor for secondary compression after reaching the proper medium pressure. Therefore, the air displacement of the compressor is improved in a two-stage throttling middle air injection mode, and the heating capacity of the air conditioning system is improved under the low-temperature working condition.
The air conditioning system adopting the enhanced vapor injection technology can adapt to the environment temperature outside the vehicle lower than that of a common air conditioning system, and the low temperature outside the vehicle, which ensures the heating capacity, can be maximally lowered to-30 ℃ if the air conditioning system adopting the enhanced vapor injection technology is matched.
The air conditioning system of the utility model has the following specific structure:
the exhaust port of the compressor 1 is connected to the first side of the first cabin interior heat exchanger 31, the second side of the first cabin interior heat exchanger is connected to the inlet of the flash tank 21, and the liquid outlet of the flash tank is connected to the first side of the outdoor heat exchanger 4. An air outlet of the flash tank is connected to an air jet of the compressor, an auxiliary electronic expansion valve 22 is arranged between the second side of the first cabin heat exchanger and an air inlet of the flash tank, and a first electronic expansion valve 61 and a first cutoff valve 71 which are arranged in parallel are arranged between an liquid outlet of the flash tank and the first side of the outdoor heat exchanger.
The second side of the extravehicular heat exchanger is connected with the first side of the intermediate heat exchanger 5, and the second side of the intermediate heat exchanger is connected to the return air port of the compressor; the first side of the second indoor heat exchanger 32 is connected to the first side of the intermediate heat exchanger, the second side of which is connected to the return port of the compressor. A second electronic expansion valve 62 and a second shut-off valve 72, arranged in parallel, are arranged between the second side of the outboard heat exchanger and the first side of the intermediate heat exchanger.
In addition, the throttling component group further comprises a third electronic expansion valve 63, and the third electronic expansion valve is configured on the second cabin heat exchanger. Specifically, the method comprises the following steps: a first pipeline is arranged between a pipeline between the second electronic expansion valve and the second shutoff valve which are arranged in parallel and the second side of the extravehicular heat exchanger and the first side of the intermediate heat exchanger, and a third electronic expansion valve is arranged on the first pipeline.
In addition, the valve group further comprises a third cut-off valve 73, a first end of which is connected between the enhanced vapor injection and the first switching unit, and a second end of which is connected between the second switching unit and the cabin heat exchanger assembly. Specifically, the method comprises the following steps: the first pipeline is provided with a first node at a position between the third electronic expansion valve and the second shutoff valve which are arranged in parallel, the liquid outlet of the flash tank is provided with a second node at a position between the first electronic expansion valve and the first shutoff valve which are arranged in parallel, a second pipeline is arranged between the first node and the second node, and the third shutoff valve is arranged on the second pipeline.
In addition, the valve block further includes a check valve 74 having a first end disposed between the third electronic expansion valve and the second switching unit, a second end disposed between the discharge port of the compressor and the first side of the first indoor heat exchanger, and defined to allow conduction only from the first end to the second end. Specifically, the method comprises the following steps: a fifth pipeline is arranged between a third pipeline between the intermediate heat exchanger and the air return port of the compressor and a fourth pipeline between the exhaust port of the compressor and the first side of the first cabin heat exchanger, a check valve contained in a valve group is arranged on the fifth pipeline, and the check valve is limited to only allow the third pipeline to be communicated with the fourth pipeline.
In addition, the air conditioning system further comprises a gas-liquid separator 8 disposed between the second side of the intermediate heat exchanger/second in-cabin heat exchanger and the return air port of the compressor.
The first switching unit, the second switching unit, the third electronic expansion valve, the third shut-off valve and the one-way valve described above constitute one possible embodiment of the switching section of the air conditioning system. Based on this, the switching of the air conditioning system between the various modes allowed by the air conditioning system can be better realized. Based on the structure, the air conditioning system can meet the cooling/heating requirements of the passengers in the cabin in the following mode.
Referring to fig. 2, fig. 2 shows a schematic diagram of an air conditioning system according to an embodiment of the present invention when the air conditioning system is in a cooling mode. As shown in fig. 2, in the case where the air conditioning system is in the cooling mode, the second cabin heat exchanger functions as an evaporator and the first cabin heat exchanger functions as a condenser. The second shutoff valve and the second electronic expansion valve are both closed, so that the intermediate heat exchanger does not participate in the current refrigerant cycle. The first shut-off valve is opened and the first electronic expansion valve is closed, so the outdoor heat exchanger corresponds to a passage. The specific refrigerant circulation path (main circuit) is: compressor → first cabin interior heat exchanger → second cabin interior heat exchanger → auxiliary electronic expansion valve → flash tank → first cut-off valve → external heat exchanger → third electronic expansion valve → second cabin interior heat exchanger → gas-liquid separator → compressor.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating an air conditioning system according to an embodiment of the present invention when the air conditioning system is in a heating mode. As shown in fig. 3, in the case that the air conditioning system is in the heating mode, the second indoor heat exchanger does not participate in the current refrigerant cycle, and the first indoor heat exchanger serves as a condenser. The first shut-off valve is closed and the first electronic expansion valve is open, so that the overboard heat exchanger acts as an evaporator. The second shutoff valve is opened and the second electronic expansion valve is closed, so the intermediate heat exchanger corresponds to a passage. The specific refrigerant circulation path (main circuit) is: compressor → first cabin interior heat exchanger → auxiliary electronic expansion valve → flash tank → first electronic expansion valve → cabin exterior heat exchanger → second shutoff valve → intermediate heat exchanger → gas-liquid separator → compressor.
It can be seen that in this case the intermediate heat exchanger participates in the refrigerant cycle but only serves as a passage for the heat exchange function. The air conditioning system in this mode may therefore be referred to as an air-source heat pump which does not require waste heat recovery.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating a second principle of the air conditioning system according to an embodiment of the present invention when the air conditioning system is in the heating mode. As shown in fig. 4, in a case where the air conditioning system is in the heating mode, both the outdoor heat exchanger (with the first shut-off valve closed and the first electronic expansion valve closed) and the second indoor heat exchanger do not participate in the current refrigerant cycle, and the first indoor heat exchanger serves as a condenser. The third shut-off valve is open, the second shut-off valve is closed, and the second electronic expansion valve is open, so that the intermediate heat exchanger functions as an evaporator. The specific refrigerant circulation path (main circuit) is: compressor → first cabin heat exchanger → auxiliary electronic expansion valve → flash tank → third interception valve → second electronic expansion valve → intermediate heat exchanger → gas-liquid separator → compressor. It can be seen that in this case the intermediate heat exchanger participates in the refrigerant cycle and acts as an evaporator. The air conditioning system in this mode may therefore be referred to as a water source heat pump requiring waste heat recovery.
Referring to fig. 5, fig. 5 is a schematic diagram showing a third principle of the air conditioning system according to an embodiment of the present invention when the air conditioning system is in the heating mode. As shown in fig. 5, in the case that the air conditioning system is in the heating mode, the second indoor heat exchanger does not participate in the current refrigerant cycle, and the first indoor heat exchanger serves as a condenser. The first shut-off valve is opened and the first electronic expansion valve is closed, so that the extravehicular heat exchanger is only used as a passage. The third shut-off valve is open, the second shut-off valve is closed, and the second electronic expansion valve is open, so that the intermediate heat exchanger functions as an evaporator. The specific refrigerant circulation path (main circuit) is: compressor → first cabin heat exchanger → auxiliary electronic expansion valve → flash tank → ((first shut-off valve → outdoor heat exchanger) & third shut-off valve) → second electronic expansion valve → intermediate heat exchanger → gas-liquid separator → compressor.
It can be seen that in this case the intermediate heat exchanger participates in the refrigerant cycle and acts as an evaporator, so the air conditioning system in this mode can therefore be referred to as a water source heat pump requiring waste heat recovery.
Unlike fig. 4, the outdoor heat exchanger in this mode is also in the refrigerant circulation loop, so that the opening degrees of the first and third throttle valves can be adjusted according to actual needs, and the refrigerant condensed by the first indoor heat exchanger serving as a condenser can be further subcooled by performing small-amplitude heat exchange with the outdoor environment by means of the outdoor heat exchanger (for example, by adjusting the air speed of a fan disposed in the outdoor heat exchanger), thereby further increasing the enthalpy difference capability of the air conditioning system.
It can be seen that, in the utility model discloses an air conditioning system, under the prerequisite of having introduced the enhanced vapor injection technique, through dispose a heat transfer unit who makes up by electronic expansion valve and stop valve respectively before extravehicular heat exchanger and the intermediate heat exchanger that concatenates, for a second cabin interior heat exchanger configuration electronic expansion valve in the cabin heat exchanger group and for an intermediate heat exchanger configuration stop valve, not only can satisfy the driver and crew's of cockpit demand of heating, can also carry the used heat/the waste heat of parts such as motor, power battery to the cockpit through intermediate heat exchanger to air conditioning system's application on the vehicle has been realized.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.
Claims (10)
1. An air conditioning system for a vehicle, the vehicle including a heat generating component, the air conditioning system including a compressor, an in-cabin heat exchanger assembly, an out-cabin heat exchanger, an intermediate heat exchanger, and a duct,
the compressor is provided with an enhanced vapor injection part, the cabin heat exchanger assembly comprises a first cabin heat exchanger, and heat can be transferred between the intermediate heat exchanger and the heat generating component;
the air conditioning system includes a switching portion including:
the first switching unit corresponds to the outdoor heat exchanger and comprises a first cutoff valve and a first electronic expansion valve which are connected in parallel, and the state of the outdoor heat exchanger in the pipeline can be adjusted by switching the on-off states of the first cutoff valve and the first electronic expansion valve;
and the second switching unit corresponds to the second switching unit of the intermediate heat exchanger and comprises a second shutoff valve and a second electronic expansion valve which are connected in parallel, and the state of the intermediate heat exchanger in the pipeline can be adjusted by switching the on-off states of the second shutoff valve and the second electronic expansion valve.
2. The air conditioning system of claim 1, wherein the discharge port of the compressor is connected to a first side of the first indoor heat exchanger, a second side of the first indoor heat exchanger is connected to a first side of the outdoor heat exchanger via the first electronic expansion valve, a second side of the outdoor heat exchanger is connected to a first side of the intermediate heat exchanger via the second shut-off valve, and a second side of the intermediate heat exchanger is connected to the return port of the compressor.
3. The air conditioning system of claim 1, wherein the switching portion further comprises a third intercept valve, a first end of the third intercept valve being connected between the enhanced vapor injection portion and the first switching unit, and a second end of the third intercept valve being connected between the second switching unit and the cabin heat exchanger assembly.
4. The air conditioning system of claim 3, wherein the discharge port of the compressor is connected to a first side of the first indoor heat exchanger, a second side of the first indoor heat exchanger is connected to a first side of the intermediate heat exchanger through the third throttle valve and the second electronic expansion valve in sequence, and a second side of the intermediate heat exchanger is connected to the return port of the compressor.
5. The air conditioning system of claim 3, wherein the discharge port of the compressor is connected to a first side of the first indoor heat exchanger, and a second side of the first indoor heat exchanger is connected to the second electronic expansion valve in two ways:
1) directly through the third shut-off valve to the second electronic expansion valve;
2) the first electronic expansion valve is connected with the outdoor heat exchanger through the first throttle valve;
and the second electronic expansion valve is connected to a return air port of the compressor through the intermediate heat exchanger.
6. The air conditioning system of claim 3, wherein the cabin heat exchanger assembly comprises a second cabin heat exchanger, and the switching section further comprises a third electronic expansion valve disposed in the second cabin heat exchanger.
7. The air conditioning system according to claim 6, wherein the switching portion further includes a check valve, a first end of which is disposed between the third electronic expansion valve and the second switching unit, a second end of which is disposed between the discharge port of the compressor and the first side of the first cabin heat exchanger, and which is defined to allow only conduction from the first end to the second end.
8. The air conditioning system of claim 6, wherein the discharge port of the compressor is connected to a first side of the first indoor heat exchanger, a second side of the first indoor heat exchanger is connected to a first side of the outdoor heat exchanger via the first throttle valve, a second side of the outdoor heat exchanger is connected to a first side of the second indoor heat exchanger via the third electronic expansion valve, and a second side of the second indoor heat exchanger is connected to the return port of the compressor.
9. The air conditioning system of claim 1, wherein the enhanced vapor injection unit comprises a flash tank and an auxiliary electronic expansion valve, wherein a condenser in the refrigerant circulation loop is connected to an inlet of the flash tank, the auxiliary electronic expansion valve is disposed between the flash tank and the auxiliary electronic expansion valve, and an air outlet and a liquid outlet of the flash tank are respectively connected to an air nozzle of the compressor and an evaporator in the refrigerant circulation loop.
10. A vehicle equipped with an air conditioning system of the vehicle according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122793220.2U CN216308293U (en) | 2021-11-12 | 2021-11-12 | Vehicle and air conditioning system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122793220.2U CN216308293U (en) | 2021-11-12 | 2021-11-12 | Vehicle and air conditioning system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216308293U true CN216308293U (en) | 2022-04-15 |
Family
ID=81119709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122793220.2U Active CN216308293U (en) | 2021-11-12 | 2021-11-12 | Vehicle and air conditioning system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216308293U (en) |
-
2021
- 2021-11-12 CN CN202122793220.2U patent/CN216308293U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107020915B (en) | Air conditioner heat pump system with coolant liquid return circuit for new energy automobile | |
| EP3800076A1 (en) | Thermal management system | |
| CN109080406B (en) | Heat pump vehicle air conditioning system combined with heat management and control method thereof | |
| WO2017193857A1 (en) | Heat pump air-conditioning system and electric vehicle | |
| CN102563943A (en) | Refrigerant circuit of an HVAC system of a motor vehicle | |
| JP2009257748A (en) | Heating and air-conditioning unit for automobile | |
| KR20160110063A (en) | Air-conditioning system of a motor vehicle and method for operating the air-conditioning system | |
| CN109968940B (en) | Air conditioning system applied to electric automobile and electric automobile | |
| CN110588283A (en) | Cooling system of electric vehicle | |
| CN113173050B (en) | Thermal management system | |
| CN107176009B (en) | Air conditioning system and control method thereof | |
| CN113173049B (en) | Thermal management system | |
| CN115214304A (en) | Thermal management system | |
| CN110356283B (en) | Thermal management system of vehicle power battery | |
| WO2019029218A9 (en) | Automotive air conditioning system | |
| CN113492644A (en) | System and method for air conditioning the air of a passenger compartment and for heat transfer with a drive component of a motor vehicle | |
| CN109386987B (en) | Two-pipe heating recovery multi-split air conditioner system and air conditioner outdoor unit thereof | |
| CN111231621B (en) | Vehicle thermal management system and vehicle | |
| CN113335025B (en) | Vehicle heat pump air conditioning system and electric automobile | |
| CN109386989B (en) | Two-pipe jet enthalpy-increasing outdoor unit and multi-split system | |
| CN216308294U (en) | Vehicle and air conditioning system thereof | |
| CN110435384A (en) | A kind of electric automobile heat-pump air-conditioning system | |
| CN216308293U (en) | Vehicle and air conditioning system thereof | |
| CN114111129A (en) | Vehicle and air conditioning system thereof | |
| CN111251805B (en) | Vehicle, thermal management system of vehicle and control method of thermal management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |