CN218948880U - Air conditioning system and vehicle - Google Patents
Air conditioning system and vehicle Download PDFInfo
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- CN218948880U CN218948880U CN202223213717.3U CN202223213717U CN218948880U CN 218948880 U CN218948880 U CN 218948880U CN 202223213717 U CN202223213717 U CN 202223213717U CN 218948880 U CN218948880 U CN 218948880U
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Abstract
The utility model relates to the technical field of thermal management systems, in particular to an air conditioning system and a vehicle. The air conditioning system includes: the device comprises a compressor, an indoor heat exchanger, a first throttle valve, a first gas-liquid separator and an outdoor heat exchanger; the outlet of the compressor is communicated with the inlet of the indoor heat exchanger, the outlet of the indoor heat exchanger is communicated with the inlet of the first gas-liquid separator, the outlet of the first gas-liquid separator is communicated with the inlet of the outdoor heat exchanger, and the outlet of the outdoor heat exchanger is communicated with the inlet of the compressor.
Description
Technical Field
The utility model relates to the technical field of thermal management systems, in particular to an air conditioning system and a vehicle.
Background
An air conditioning system in the related art includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, a gas-liquid separator, a regenerator, and a plurality of control valves. The refrigerant can flow out from the compressor into the indoor heat exchanger, then enters the interior of the heat regenerator through a first inlet of the heat regenerator, then flows out from a first outlet of the heat regenerator corresponding to the first inlet, flows to the outdoor heat exchanger after being throttled, flows into the gas-liquid separator after passing through the outdoor heat exchanger, then enters the interior of the heat regenerator through a second inlet of the heat regenerator, then flows out from a second outlet of the heat regenerator corresponding to the second inlet, and returns to the compressor. In order to ensure the normal operation of the compressor, the compressor needs to be lubricated by lubricating oil, part of the lubricating oil can be taken away in the process of refrigerant circulation, and the lubricating oil circulates together and finally returns to the compressor; however, when the temperature of the refrigerant (e.g., carbon dioxide) used is low to a certain temperature range, the density thereof changes, and the direction of the refrigerant is reversed with respect to the lubricant, so that the lubricant cannot return to the compressor normally, and the oil return is difficult.
Disclosure of Invention
The utility model aims to provide a device for solving the technical problem that lubricating oil in an air conditioning system is difficult to return oil in the prior art to a certain extent.
The present utility model provides an air conditioning system, comprising: the compressor comprises a compressor indoor heat exchanger, a first throttle valve, a first gas-liquid separator and an outdoor heat exchanger; the outlet of the compressor is communicated with the inlet of the indoor heat exchanger, the outlet of the indoor heat exchanger is communicated with the inlet of the first gas-liquid separator, the outlet of the first gas-liquid separator is communicated with the inlet of the outdoor heat exchanger, the communication pipeline of the first gas-liquid separator and the outdoor heat exchanger is provided with the first throttle valve, and the outlet of the outdoor heat exchanger is communicated with the inlet of the compressor.
In the heating process of the air conditioning system, fluid (comprising lubricating oil and refrigerant, the main body of which is refrigerant) enters an indoor heat exchanger from a compressor, the refrigerant in the fluid exchanges heat with external air in the indoor heat exchanger, air around the indoor heat exchanger is heated, and the heated air is blown into a vehicle cabin to heat the vehicle cabin; then, the fluid enters a first gas-liquid separator to carry out gas-liquid separation (mainly gaseous refrigerant and liquid refrigerant are subjected to gas-liquid separation); the temperature of the refrigerant at the outlet of the indoor heat exchanger is still higher (for example, about 40 degrees), the refrigerant flowing out of the indoor heat exchanger is throttled by the first throttle valve, the first throttle valve can cool and decompress the refrigerant, the throttled refrigerant enters the outdoor heat exchanger to absorb heat, and the fluid flows out of the outdoor heat exchanger and finally returns to the compressor. The first gas-liquid separator in the air conditioning system is positioned in the high-temperature section of the refrigerant (compared with the temperature of the refrigerant at the outlet of the outdoor heat exchanger, namely, the low-temperature section is arranged between the outlet of the outdoor heat exchanger and the compressor), so that the temperature of the refrigerant is prevented from being reduced to a temperature section where the position of the refrigerant and the position of the lubricating oil are overturned, and the smooth oil return can be ensured.
Further, the air conditioning system further comprises a second gas-liquid separator, an outlet of the outdoor heat exchanger is communicated with an inlet of the second gas-liquid separator, and an outlet of the second gas-liquid separator is communicated with an inlet of the compressor.
Further, the air conditioning system also comprises a first bypass pipeline, one end of the first bypass pipeline is communicated with the inlet of the second gas-liquid separator, and the other end of the first bypass pipeline is communicated with the outlet of the second gas-liquid separator; and a first reversing valve is arranged between the first bypass pipeline and the second gas-liquid separator.
Further, the air conditioning system further comprises an additional heat exchanger, an outlet of the indoor heat exchanger is communicated with an inlet of the additional heat exchanger, and an outlet of the additional heat exchanger is communicated with the first gas-liquid separator.
Further, a second throttle valve is arranged on the communication pipeline of the indoor heat exchanger and the additional heat exchanger.
Further, the air conditioning system further comprises a second bypass pipeline, one end of the second bypass pipeline is communicated with the outlet of the indoor heat exchanger, and the other end of the second bypass pipeline is communicated with the outlet of the additional heat exchanger; and a second reversing valve is arranged between the second bypass pipeline and the outlet of the indoor heat exchanger.
Further, a third throttle valve is arranged on a communication pipeline between the additional heat exchanger and the first gas-liquid separator.
Further, the air outlet of the first gas-liquid separator is communicated with the inlet of the compressor, and a fourth throttle valve is arranged on a communication pipeline between the first gas-liquid separator and the inlet of the compressor; the liquid outlet of the first gas-liquid separator is communicated with the first throttle valve.
Further, the air conditioning system further comprises a third bypass pipeline, one end of the third bypass pipeline is communicated with the outlet of the additional heat exchanger, and the other end of the third bypass pipeline is communicated with the inlet of the outdoor heat exchanger; and a third reversing valve is arranged between the third bypass pipeline and the outlet of the additional heat exchanger.
The utility model also provides a vehicle, which comprises a vehicle body and the air conditioning system.
It is to be understood that both the foregoing general description and the following detailed description are for purposes of example and explanation and are not necessarily limiting of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the present disclosure. Meanwhile, the description and drawings are used to explain the principles of the present disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an air conditioning system according to a first embodiment of the present utility model;
fig. 2 is a schematic structural diagram of an air conditioning system according to a second embodiment of the present utility model;
fig. 3 is a schematic structural view of an air conditioning system according to a third embodiment of the present utility model;
fig. 4 is a schematic structural diagram of an air conditioning system according to a fourth embodiment of the present utility model.
Icon: 1-a compressor; 2-an indoor heat exchanger; 3-a first throttle valve; 4-a first gas-liquid separator; 5-an outdoor heat exchanger; 6-a second gas-liquid separator; 7-an additional heat exchanger; 8-a second throttle valve; 9-a third throttle valve; 10-a heat regenerator; 11-fourth throttle valve; 12-a first bypass duct; 13-a first reversing valve; 14-a second bypass line; 15-a second reversing valve.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.
The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships 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, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. 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.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
It should be noted that, in the embodiment of the present utility model, the two components may be directly connected, or may be indirectly connected, and a valve may be further disposed on a connecting pipe of the two components, and other components may be further connected between the two components. For example: the outlet of the additional heat exchanger is communicated with the first gas-liquid separator, a heat regenerator can be further arranged between the additional heat exchanger and the first gas-liquid separator, fluid can flow through the additional heat exchanger and the first gas-liquid separator, a third throttle valve can be further arranged on a communication pipeline of the additional heat exchanger and the first gas-liquid separator, and other valves can be further arranged to control the fluid in the communication pipeline.
As shown in fig. 1 to 4, the present utility model provides an air conditioning system including a compressor 1, an indoor heat exchanger 2 (for exchanging heat with air inside a vehicle), a first throttle valve 3, a first gas-liquid separator 4, and an outdoor heat exchanger 5 (for exchanging heat with air outside the vehicle); the outlet of the compressor 1 is communicated with the inlet of the indoor heat exchanger 2, the outlet of the indoor heat exchanger 2 is communicated with the inlet of the first gas-liquid separator 4 (the joint for fluid entering the first gas-liquid separator 4 is called as a whole), the outlet of the first gas-liquid separator 4 (the joint for fluid flowing out of the gas-liquid separator is called as a whole) is communicated with the inlet of the outdoor heat exchanger 5, the communication pipeline of the first gas-liquid separator 4 and the outdoor heat exchanger 5 is provided with the first throttle valve 3, and the outlet of the outdoor heat exchanger 5 is communicated with the inlet of the compressor 1.
In cold weather, the temperature of the refrigerant is relatively low, and the air conditioning system in the vehicle is required to heat, so that the oil return difficulty in the related art generally occurs in the heating process.
In the heating process of the air conditioning system provided by the embodiment, fluid (including lubricating oil and refrigerant, the main body is the refrigerant) enters the indoor heat exchanger 2 from the compressor 1, the refrigerant in the fluid exchanges heat with external air in the indoor heat exchanger 2, air around the indoor heat exchanger 2 is heated, and the heated air is blown into the cabin to heat the cabin; then, the fluid enters a first gas-liquid separator 4 to perform gas-liquid separation (mainly gas-state refrigerant and liquid-state refrigerant to perform gas-liquid separation); the temperature of the refrigerant at the outlet of the indoor heat exchanger 2 is still higher (for example, about 40 degrees), the refrigerant flowing out of the indoor heat exchanger 2 is throttled by the first throttle valve 3, the first throttle valve 3 can cool and decompress the refrigerant, the throttled refrigerant enters the outdoor heat exchanger 5 to absorb heat, and the fluid flows out of the outdoor heat exchanger 5 and finally returns to the compressor 1. In the air conditioning system of the embodiment, the first gas-liquid separator 4 is located in a high temperature section of the refrigerant (compared with the refrigerant at the outlet of the outdoor heat exchanger 5, that is, a low temperature section between the outlet of the outdoor heat exchanger 5 and the compressor 1), so that the temperature of the refrigerant is prevented from being lowered to a temperature section where the refrigerant and the lubricating oil are overturned, and smooth oil return can be ensured.
The air conditioning system may further include a regenerator 10 to improve the stability of the overall air conditioning system. Specifically, the outlet of the indoor heat exchanger 2 is communicated with a first inlet of the regenerator 10, the first outlet of the regenerator 10 is communicated with the inlet of the first gas-liquid separator 4, the outlet of the outdoor heat exchanger 5 is communicated with a second inlet of the regenerator 10, and the second outlet of the regenerator 10 is communicated with the inlet of the compressor 1. The refrigerant can enter the heat regenerator 10 through the first inlet, flow through the heat regenerator 10 and then flow out of the heat regenerator 10 through the first outlet, then enter the first gas-liquid separator 4 for gas-liquid separation, then enter the outdoor heat exchanger 5 through the refrigerant and the lubricating oil to absorb heat, then enter the heat regenerator 10 through the second inlet, flow out of the heat regenerator 10 through the second outlet, and finally return to the compressor 1.
As shown in fig. 2, further, the air conditioning system further includes a second gas-liquid separator 6, the outlet of the outdoor heat exchanger 5 is communicated with the inlet of the second gas-liquid separator 6, and the outlet of the second gas-liquid separator 6 is communicated with the inlet of the compressor 1.
In this embodiment, the second gas-liquid separator 6 is disposed between the outdoor heat exchanger 5 and the compressor 1, so that the circulation of the refrigerant can be achieved by adopting a conventional control method in the refrigeration working mode of the air conditioning system, and no pipeline or control process is required to be reset, thereby reducing the cost.
Specifically, when the air conditioning system includes the regenerator 10, the outlet of the second gas-liquid separator 6 communicates with the second inlet.
As shown in fig. 3, based on the above embodiment, the air conditioning system further includes a first bypass pipe 12, one end of the first bypass pipe 12 is communicated with the inlet of the second gas-liquid separator 6, and the other end is communicated with the outlet of the second gas-liquid separator 6; a first reversing valve 13 is arranged between the first bypass pipe 12 and the second gas-liquid separator 6, and the first reversing valve 13 can enable the refrigerant to enter the second gas-liquid separator 6 or enter the first bypass pipe 12.
In this embodiment, when the air conditioning system heats, the first reversing valve 13 opens the first bypass pipe 12, closes the inlet of the second gas-liquid separator 6, and the refrigerant directly enters the compressor through the first bypass pipe 12 (if the regenerator is provided, the refrigerant directly enters the second inlet through the first bypass pipe 12), that is, the refrigerant does not pass through the second gas-liquid separator 6.
As shown in fig. 1 to 4, further, the air conditioning system further includes an additional heat exchanger 7, wherein an outlet of the indoor heat exchanger 2 is communicated with an inlet of the additional heat exchanger 7, and an outlet of the additional heat exchanger 7 is communicated with the first gas-liquid separator 4 (if the regenerator 10 is provided, an outlet of the additional heat exchanger 7 is communicated with the first inlet).
In this embodiment, the additional heat exchanger 7 can increase the heat exchange amount of the whole air conditioning system.
As shown in fig. 1 to 4, further, on the basis of the above embodiment, a second throttle valve 8 is provided on the communication pipe of the indoor heat exchanger 2 and the additional heat exchanger 7.
In the present embodiment, the second throttle valve 8 can adjust the amount of refrigerant entering the indoor heat exchanger 2, so that the temperature of refrigerant exiting the indoor heat exchanger 2 can be adjusted.
As shown in fig. 3, based on the above embodiment, the air conditioning system further includes a second bypass pipe 14, one end of the second bypass pipe 14 is communicated with the outlet of the indoor heat exchanger 2, and the other end of the second bypass pipe 14 is communicated with the outlet of the additional heat exchanger 7; a second reversing valve 15 is arranged between the second bypass line 14 and the outlet of the indoor heat exchanger 2, the second reversing valve 15 allowing refrigerant to enter the first throttle valve 3 or the second bypass line 14.
In this embodiment, when the air conditioning system heats, the second reversing valve 15 opens the second bypass pipe 14, closes the inlet of the additional heat exchanger 7, and directly passes through the second bypass pipe 14 to enter the first gas-liquid separator (if the regenerator 10 is provided, the refrigerant directly passes through the second bypass pipe to enter the first inlet), that is, the refrigerant does not pass through the second throttle valve 8 and the additional heat exchanger 7, so as to reduce the pressure drop of the refrigerant.
As shown in fig. 1 to 4, further, on the basis of the above-described embodiment, a third throttle valve 9 is provided on the communication pipe between the additional heat exchanger 7 and the first gas-liquid separator 4 (if a regenerator 10 is provided, the third throttle valve 9 is provided on the communication pipe between the additional heat exchanger 7 and the first inlet).
In this embodiment, the fluid passes through the second throttle valve 8 and the third throttle valve 9, and the fluid realizes two throttles, that is, the refrigerant realizes two throttles, so that the temperature and the pressure of the fluid can be further adjusted, and the temperature of the refrigerant in the first gas-liquid separator 4 can be ensured to be higher than the density turnover temperature of the lubricating oil and the refrigerant after the throttling through the third throttle valve 9.
In particular, if the air conditioning system comprises a regenerator 10, a third throttle valve 9 is provided on the communication conduit between the additional heat exchanger 7 and the first inlet.
As shown in fig. 4, further, based on the above embodiment, the air outlet of the first gas-liquid separator 4 is communicated with the inlet of the compressor 1, and a fourth throttle valve 11 is arranged on a communication pipeline between the first gas-liquid separator 4 and the inlet of the compressor 1; the liquid outlet of the first gas-liquid separator 4 is communicated with the first throttle valve 3.
In this embodiment, during the heating process of the air conditioning system, the gaseous refrigerant in the first gas-liquid separator 4 may be directly introduced into the inlet of the compressor 1 and the refrigerant passing through the outdoor heat exchanger 5 may be merged and then enter the compressor 1, and the fourth throttle valve 11 may regulate and control the flow rate of the communication pipe between the first gas-liquid separator 4 and the inlet of the compressor 1. The liquid or mainly liquid refrigerant flows from the first gas-liquid separator 4 into the first throttle valve 3 to be throttled and then enters the outdoor heat exchanger 5.
On the basis of the embodiment, the air conditioning system further comprises a third bypass pipeline, one end of the third bypass pipeline is communicated with the outlet of the additional heat exchanger 7, and the other end of the third bypass pipeline is communicated with the inlet of the outdoor heat exchanger 5; a third reversing valve is arranged between the third bypass conduit and the outlet of the additional heat exchanger 7, which third reversing valve may allow refrigerant to enter the second gas-liquid separator 6 or into the third bypass conduit.
In this embodiment, during the refrigerating process of the air conditioning system, the third reversing valve may be controlled to open the third bypass pipe, so that the refrigerant directly enters the third bypass pipe, then enters the outdoor heat exchanger 5, and bypasses the first gas-liquid separator, thereby realizing a normal refrigerating cycle.
The embodiment of the utility model also provides a vehicle comprising the air conditioning system according to any one of the above technical schemes, so that the vehicle has all the beneficial technical effects of the air conditioning system, and the description is omitted here.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model. In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments.
Claims (10)
1. An air conditioning system, comprising: the device comprises a compressor (1), an indoor heat exchanger (2), a first throttle valve (3), a first gas-liquid separator (4) and an outdoor heat exchanger (5); the outlet of the compressor (1) is communicated with the inlet of the indoor heat exchanger (2), the outlet of the indoor heat exchanger (2) is communicated with the inlet of the first gas-liquid separator (4), the outlet of the first gas-liquid separator (4) is communicated with the inlet of the outdoor heat exchanger (5), the first throttle valve (3) is arranged on a communication pipeline of the first gas-liquid separator (4) and the outdoor heat exchanger (5), and the outlet of the outdoor heat exchanger (5) is communicated with the inlet of the compressor (1).
2. An air conditioning system according to claim 1, characterized in that the air conditioning system further comprises a second gas-liquid separator (6), the outlet of the outdoor heat exchanger (5) being in communication with the inlet of the second gas-liquid separator (6), the outlet of the second gas-liquid separator (6) being in communication with the inlet of the compressor (1).
3. An air conditioning system according to claim 2, characterized in that the air conditioning system further comprises a first bypass duct (12), one end of the first bypass duct (12) being in communication with the inlet of the second gas-liquid separator (6) and the other end being in communication with the outlet of the second gas-liquid separator (6); a first reversing valve (13) is arranged between the first bypass pipeline (12) and the second gas-liquid separator (6).
4. An air conditioning system according to claim 2, characterized in that the air conditioning system further comprises an additional heat exchanger (7), the outlet of the indoor heat exchanger (2) being in communication with the inlet of the additional heat exchanger (7), the outlet of the additional heat exchanger (7) being in communication with the first gas-liquid separator (4).
5. An air conditioning system according to claim 4, characterized in that a second throttle valve (8) is provided on the communication conduit of the indoor heat exchanger (2) and the additional heat exchanger (7).
6. An air conditioning system according to claim 5, characterized in that it further comprises a second bypass duct (14), one end of the second bypass duct (14) being in communication with the outlet of the indoor heat exchanger (2), the other end of the second bypass duct (14) being in communication with the outlet of the additional heat exchanger (7); a second reversing valve (15) is arranged between the second bypass pipeline (14) and the outlet of the indoor heat exchanger (2).
7. An air conditioning system according to claim 6, characterized in that a third throttle valve (9) is provided in the communication conduit between the additional heat exchanger (7) and the first gas-liquid separator (4).
8. An air conditioning system according to claim 7, characterized in that the air outlet of the first gas-liquid separator (4) is in communication with the inlet of the compressor (1), and that a fourth throttle valve (11) is provided in the communication conduit between the first gas-liquid separator (4) and the inlet of the compressor (1); the liquid outlet of the first gas-liquid separator (4) is communicated with the first throttle valve (3).
9. An air conditioning system according to claim 7, characterized in that it further comprises a third bypass duct, one end of which communicates with the outlet of the additional heat exchanger (7), the other end of which communicates with the inlet of the outdoor heat exchanger (5); a third reversing valve is arranged between the third bypass pipeline and the outlet of the additional heat exchanger (7).
10. A vehicle comprising a vehicle body and an air conditioning system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223213717.3U CN218948880U (en) | 2022-12-01 | 2022-12-01 | Air conditioning system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223213717.3U CN218948880U (en) | 2022-12-01 | 2022-12-01 | Air conditioning system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218948880U true CN218948880U (en) | 2023-05-02 |
Family
ID=86139047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223213717.3U Active CN218948880U (en) | 2022-12-01 | 2022-12-01 | Air conditioning system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218948880U (en) |
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2022
- 2022-12-01 CN CN202223213717.3U patent/CN218948880U/en active Active
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