Air conditioner oil blocking structure, heat management system and vehicle

Abstract

The utility model discloses an air conditioner oil blocking structure, a heat management system and a vehicle, and belongs to the technical field of vehicles, the air conditioner oil blocking structure comprises an oil blocking structure body and a guide part, the oil blocking structure body defines an inner cavity, and a compressor channel and a branch channel communicating with the inner cavity; the guide part comprises a first section extending into the inner cavity; when a refrigerant coming out of the evaporator enters the inner cavity, carried refrigerant oil can cross the branch channel under the guiding action of the first section, so that at least most of the refrigerant oil enters the compressor from the compressor channel, oil return work of the compressor is completed, the refrigerant oil can be effectively prevented from entering the branch channel, oil return of the compressor is ensured, and the service life of the compressor is prolonged. Moreover, the oil-resistant structure is simple and compact in structure, small in occupied space and suitable for the installation condition with the limited space, the defects of a traditional structure can be effectively overcome, and the technical blank of oil-resistant design under the condition that the installation space of an automobile air-conditioning system is limited is filled up.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to an air conditioner oil blocking structure, a thermal management system and a vehicle. BACKGROUND

[0002] Refrigeration oil is an essential component of automotive air conditioning systems. It can effectively cool the compressor, thereby removing the heat generated by friction. This prevents the compressor from being damaged by excessive temperatures. At the same time, the lubricating properties of refrigeration oil make the movement between compressor components smoother, reducing resistance and friction and extending the service life of the air conditioning system. Refrigeration oil can also penetrate the sealing surface of the friction joint to form an oil seal, effectively preventing refrigerant leakage. This sealing action ensures that the refrigerant circulates within the system, improving the efficiency of the air conditioning system and avoiding pollution of the environment.

[0003] When the automotive air conditioning system is working, the low-pressure low-temperature refrigerant coming out of the evaporator carries refrigeration oil. The refrigeration oil deposits on the inner wall of the air conditioning pipeline and flows into the lower-positioned branch channel, reducing the oil return amount of the compressor and causing the refrigeration oil in the branch channel to accumulate and flow back, which can easily cause liquid strike of the compressor. Therefore, the installation of an oil blocking structure plays a key role in the normal operation of an air conditioning system with a pipeline branch.

[0004] In related prior art, oil blocking is achieved by forming a height difference on the pipeline, which requires a large installation space. In the case of other structures and systems in the automobile cabin occupying a large space, the installation of such an oil blocking structure cannot be met. CONTENT OF THE INVENTION

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, in a first aspect, the present application proposes an air conditioner oil blocking structure, which can solve the problems of oil blocking and installation in a limited space.

[0006] In a second aspect, the present application proposes a thermal management system applying the above-mentioned air conditioner oil blocking structure.

[0007] In a third aspect, the present application proposes a vehicle applying the above-mentioned thermal management system.

[0008] According to the air conditioner oil blocking structure of the first aspect of the present application, the air conditioner oil blocking structure comprises:

[0009] An oil blocking structure body, which defines an inner cavity and a compressor channel and a branch channel communicating with the inner cavity;

[0010] A guide portion connected to the oil blocking structure body and defining an evaporator channel, the guide portion comprising a first section extending into the inner cavity, and the evaporator channel forming an opening communicating with the inner cavity on the end face of the first section.

[0011] The branch passage and the compressor passage are arranged along a direction of the first section to the opening, and an end surface of the first section is located between the branch passage and the compressor passage along an axial direction of the first section.

[0012] According to the oil blocking structure of the air conditioner, at least the following beneficial effects are achieved:

[0013] The end surface of the first section is located between the branch passage and the compressor passage in various forms in the embodiment, including but not limited to:

[0014] In a case where the compressor passage and the branch passage are parallel to the axial direction of the first section, the end of the first section is located in a region between the compressor passage and the branch passage, and the end of the first section is an end portion where the end surface of the first section is located.

[0015] In a case where the branch passage and the compressor passage form an included angle greater than 0° and less than 180° with the axial direction of the first section, the end of the first section is located in a region opposite to the branch passage, and at this time, a part of the region of the branch passage is opposite to the circumferential side wall of the first section; or along the direction of the first section to the opening, the end of the first section passes through the branch passage, so that the end of the first section is located on a side of the branch passage close to the compressor passage, and at this time, the end surface of the first section is located on the side of the branch passage close to the compressor passage; or along the direction of the first section to the opening, the end of the first section passes through the branch passage and is located in a region opposite to the compressor passage, and at this time, a part of the region of the compressor passage is opposite to the circumferential side wall of the first section.

[0016] During operation, the evaporator passage is connected to the evaporator, the compressor passage is connected to the compressor, and the branch passage is connected to the branch pipeline and its working system. When the low-pressure and low-temperature refrigerant from the evaporator enters the inner cavity, the refrigeration oil carried by the low-pressure and low-temperature refrigerant will pass through the branch passage under the guidance of the first section, so that at least most of the refrigeration oil enters the compressor from the compressor passage, and the oil return work of the compressor is completed.

[0017] Therefore, the oil blocking structure of the air conditioner in the application can effectively prevent the refrigeration oil from entering the branch passage, ensure the oil return of the compressor, and has the advantages of simple and compact structure, small space occupation, and suitability for installation in a limited space. The oil blocking structure can effectively solve the shortcomings of the traditional structure and fill the technical gap of the oil blocking design of the automobile air conditioning system in the case of limited installation space.

[0018] According to some embodiments of the application, the branch passage is opposite to at least part of the circumferential side wall of the first section.

[0019] According to some embodiments of this application, the compressor channel is opposite to the opening, and along the axial direction of the first segment, the projection of the compressor channel on the end face of the first segment at least partially coincides with the opening.

[0020] According to some embodiments of this application, the compressor channel and the evaporator channel are coaxially arranged.

[0021] According to some embodiments of this application, the branch channel is arranged in a direction perpendicular to the evaporator channel.

[0022] According to some embodiments of this application, the branch channel and the first segment are located on the same end face of the oil-blocking structure body.

[0023] According to some embodiments of this application, the lowest point of the compressor channel is at a lower level than the lowest point of the branch channel.

[0024] According to some embodiments of this application, the inner cavity has an inclination angle toward the compressor channel.

[0025] The thermal management system according to the second aspect of this application includes the air conditioning oil-blocking structure of any of the above embodiments.

[0026] The thermal management system according to the embodiments of this application has at least the following beneficial effects:

[0027] In this application, the thermal management system ensures that, during operation, the low-pressure, low-temperature refrigerant exiting the evaporator carries refrigerant oil as it enters the internal cavity. Guided by the first stage, the oil bypasses the branch channels, allowing at least a majority of the refrigerant oil to enter the compressor through the compressor channel, thus completing the compressor's oil return process. This effectively prevents refrigerant oil from entering the branch channels, ensuring compressor oil return. Furthermore, the system is simple, compact, and space-saving, making it suitable for space-constrained installations. It effectively addresses the shortcomings of traditional structures and fills the technological gap in oil-blocking design for automotive air conditioning systems in space-constrained installation environments.

[0028] The vehicle according to a third aspect of this application includes the above-described thermal management system.

[0029] The vehicle according to the embodiments of this application has at least the following beneficial effects:

[0030] The vehicle described in this application utilizes the aforementioned thermal management system. When the low-pressure, low-temperature refrigerant exiting the evaporator enters the internal cavity, the accompanying refrigerant oil is guided by the first stage to cross the branch channel. This ensures that at least a majority of the refrigerant oil enters the compressor through the compressor channel, completing the compressor's oil return process. Therefore, it effectively prevents refrigerant oil from entering the branch channel, ensuring compressor oil return. Furthermore, the structure is simple, compact, and space-saving, making it suitable for space-constrained installations. It effectively addresses the shortcomings of traditional structures and fills the technological gap in oil-blocking design for automotive air conditioning systems in space-constrained installation environments.

[0031] Additional aspects and advantages of this application will be set forth in part in the description which follows, and some of these additional aspects and advantages will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0032] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0033] Figure 1 This is a schematic diagram of the first possible structure of the air conditioning oil-blocking structure in this application;

[0034] Figure 2 This is a schematic diagram of one axial structure of the air conditioning oil-blocking structure in this application;

[0035] Figure 3 A schematic diagram illustrating the first possible location setting of the compressor channel and branch channel in this application;

[0036] Figure 4 A schematic diagram illustrating a second possible location setting for the compressor channel and branch channel in this application;

[0037] Figure 5 This is a schematic diagram of the second structure of the air conditioning oil-blocking structure in this application;

[0038] Figure 6 A schematic diagram showing the positional relationship between the end of the first segment and the branch channel in this application;

[0039] Figure 7 This is a schematic diagram illustrating one possible positional relationship between the first segment and the branch channel in this application.

[0040] In the picture:

[0041] 100-Oil-blocking structure body, 101-Inner cavity, 102-Left end face, 103-Right end face, 104-Lower end face, 105-Upper end face;

[0042] 1011 - Third sidewall, 1012 - Second sidewall, 1013 - First sidewall;

[0043] 200 - Introduction, 201 - First Paragraph, 202 - Second Paragraph;

[0044] 300 - Compressor Channel;

[0045] 400-Branch Channel;

[0046] 500 - Evaporator channel, 501 - Opening. Detailed Implementation

[0047] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0048] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0050] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0051] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Reference Figures 1 to 7This application provides an embodiment of an air conditioning oil-blocking structure, including an oil-blocking structure body 100 and a guide portion 200. Specifically:

[0053] The oil-blocking structure body 100 defines the inner cavity 101 and the compressor passage 300 and branch passage 400 that communicate with the inner cavity 101;

[0054] The guide portion 200 is connected to the oil-blocking structure body 100 and defines the evaporator channel 500. The guide portion 200 includes a first section 201 extending into the inner cavity 101. The evaporator channel 500 forms an opening 501 communicating with the inner cavity 101 on the end face of the first section 201.

[0055] The branch channel 400 and the compressor channel 300 are arranged along the first segment 201 toward the opening 501, and along the axial direction of the first segment 201, the end face of the first segment 201 is located between the branch channel 400 and the compressor channel 300.

[0056] It is understood that, in this embodiment, the end face of the first segment 201 located between the branch channel 400 and the compressor channel 300 can be configured in various ways, including but not limited to:

[0057] like Figure 7 As shown, when the compressor channel 300 and the branch channel 400 are both parallel to the axis of the first segment 201, the end of the first segment 201 extends beyond the branch channel 400 and is located in the area between the compressor channel 300 and the branch channel 400. The end of the first segment 201 mentioned in this application refers to the end where the end face of the first segment 201 is located.

[0058] When both the branch channel 400 and the compressor channel 300 form an angle greater than 0° and less than 180° with the axial direction of the first segment 201, such as Figure 6 As shown, the end of the first segment 201 is located in the area opposite to the branch channel 400, at which point a portion of the branch channel 400 is opposite to the circumferential sidewall of the first segment 201; or as... Figure 3 As shown, along the direction from the first segment 201 to the opening 501, the end of the first segment 201 extends beyond the branch channel 400, such that the end of the first segment 201 is located on the side of the branch channel 400 closer to the compressor channel 300. At this time, the end face of the first segment 201 is located on the side of the branch channel 400 closer to the compressor channel 300; or as... Figure 4 As shown, along the direction of the first segment 201 toward the opening 501, the end of the first segment 201 crosses the branch channel 400 and is located in the area opposite to the compressor channel 300. At this time, a part of the compressor channel 300 is opposite to the circumferential sidewall of the first segment 201.

[0059] During operation, the evaporator is connected to the evaporator via the evaporator channel 500, the compressor is connected to the compressor via the compressor channel 300, and the branch pipeline and its working system are connected via the branch channel 400. When the low-pressure and low-temperature refrigerant from the evaporator enters the inner cavity 101, the refrigeration oil it carries will pass through the branch channel 400 under the guidance of the first section 201, so that at least most of the refrigeration oil enters the compressor via the compressor channel 300, completing the compressor's oil return work.

[0060] Therefore, the air conditioning oil blocking structure in this application can effectively prevent refrigerant oil from entering the branch channel 400, ensuring oil return from the compressor. It is also simple, compact, and occupies little space, making it suitable for installations with limited space. It can effectively solve the shortcomings of traditional structures and fill the technical gap in oil blocking design for automotive air conditioning systems in situations where installation space is limited.

[0061] In some embodiments of this application, the branch channel 400 is at least opposite a portion of the circumferential sidewall of the first segment 201. (Refer to...) Figures 1 to 2 The branch channel 400 is opposite to the circumferential sidewall of the first section 201. With this structural configuration, when the low-pressure, low-temperature refrigerant from the evaporator enters the inner cavity 101, the refrigerant oil needs to undergo multiple deflections to enter the branch channel 400, making it difficult for it to enter. A small amount of refrigerant oil splashed outwards will also adhere to the sidewall of the inner cavity 101 and the pipe wall of the first section 201, making it difficult for it to enter the branch channel 400, which helps improve the oil return effect of the compressor.

[0062] It is understandable that, in this embodiment, the branch channel 400 and the circumferential sidewall of the first segment 201 can be arranged in different ways. One such arrangement is as follows: Figures 1 to 3 , Figure 5 As shown, along the axial direction of the first segment 201, the end of the first segment 201 completely extends beyond the branch channel 400, so that the end face of the first segment 201 is located on the side of the branch channel 400 closer to the compressor channel 300. The flow path is relatively long, making it difficult for refrigerant oil to enter the branch channel 400. Another configuration is as follows: Figure 6 As shown, the end of the first segment 201 is located opposite the branch channel 400, and the flow path is relatively short. After the refrigeration oil comes out of the opening 501, there is a possibility that it will splash into the branch channel 400 in all directions, but most of the refrigeration oil will enter the compressor channel 300 with the refrigerant.

[0063] In some embodiments of this application, the compressor passage 300 is opposite to the opening 501, and along the axial direction of the first segment 201, the projection of the compressor passage 300 on the end face of the first segment 201 at least partially coincides with the opening 501. Since the refrigerant is fed in through the evaporator passage 500, it is along the axial direction of the first segment 201, i.e., along the refrigerant delivery direction. In this embodiment, the compressor passage 300 and the opening 501 of the first segment 201 are at least partially aligned, allowing the refrigerant and the carried refrigeration oil to be directly fed into the compressor passage 300, improving overall working efficiency and oil return efficiency.

[0064] To further ensure effective oil return and improve overall efficiency, the cross-sectional dimension of the compressor passage 300 is larger than that of the branch passage 400 and the opening 501. Furthermore, the projection of the compressor passage 300 onto the end face of the first section 201 completely covers the opening 501. This former configuration ensures that the compressor can quickly receive the flow from the evaporator passage 500 and the branch passage 400, while the latter configuration allows the refrigerant and refrigeration oil transported by the evaporator passage 500 to quickly enter the compressor passage 300.

[0065] In some embodiments of this application, the compressor channel 300 and the evaporator channel 500 are coaxially arranged. This helps to ensure the oil return effect of the compressor and facilitates the machining and setting of the compressor channel 300 and the evaporator channel 500.

[0066] Based on the above embodiment, the branch channel 400 is further arranged in a direction perpendicular to the evaporator channel 500. Similarly, by arranging the branch channel 400 perpendicular to the evaporator channel 500 in this embodiment, it is not only convenient for processing and installation, but also achieves misalignment with the opening 501, preventing refrigerant oil from entering the branch channel 400.

[0067] Reference Figure 1 and Figure 4 In some embodiments of this application, the lowest point of the compressor passage 300 is at a lower level than the lowest point of the branch passage 400. Since some refrigerant oil may splash onto the cavity wall of the inner cavity 101 and the pipe wall of the first section 201, this embodiment keeps the compressor passage 300 at its lowest point to facilitate the refrigerant oil to flow back into the compressor passage 300 after it collects downwards.

[0068] Based on the above embodiments, the inner cavity 101 in this embodiment has an inclination angle towards the compressor passage 300, so as to further improve the efficiency and effect of the refrigerant oil returning to the compressor passage 300.

[0069] Reference Figure 2In some embodiments of this application, the outer surface of the oil-blocking structure body 100 includes a first end face, a second end face, and a third end face. The compressor channel 300 is vertically disposed on the first end face, the branch channel 400 is vertically disposed on the second end face, and the evaporator channel 500 passes vertically through the third end face. It is understood that the relative positions of the first, second, and third end faces in this embodiment can be flexibly set according to actual conditions. This embodiment, through the arrangement of the three end faces, facilitates the connection of the compressor channel 300 and the branch channel 400 to the corresponding pipes of the compressor and the corresponding pipes of the branch system, respectively, and facilitates the setting of the guide section 200.

[0070] Reference Figure 1 and Figure 2 Specifically, in some embodiments of this application, the oil-blocking structure body 100 has a cubic structure, including a left end face 102, a right end face 103, an upper end face 105, a lower end face 104, a front end face, and a rear end face. The compressor channel 300 is vertically disposed on the left end face 102, the guide portion 200 is vertically disposed on the right end face 103, and the branch channel 400 is vertically disposed on either the front end face or the rear end face. In this embodiment, the compressor channel 300, branch channel 400, and evaporator channel 500 are distributed around the periphery of the oil-blocking structure body 100, minimizing interference between the connected pipes. This also helps reduce the overall size, especially in the height direction, which is significantly reduced compared to traditional structures, making it suitable for applications with limited installation space. Furthermore, the compressor channel 300, branch channel 400, and evaporator channel 500 are all vertically disposed on their respective end faces, facilitating pipe connection and installation without requiring a separate installation platform perpendicular to the channel, thus contributing to a smaller overall size.

[0071] It is understood that the inner cavity 101 in this embodiment can be a rectangular cavity, a cylindrical cavity, or a cavity of other structures.

[0072] Reference Figure 1 Furthermore, in this embodiment, the compressor channel 300 and the evaporator channel 500 are coaxially distributed, while the axis of the branch channel 400 is higher than the axis of the compressor channel 300. Simultaneously, the cross-sectional dimension of the compressor channel 300 is larger than the size of the opening 501 and the cross-sectional dimension of the branch channel 400, resulting in the bottom of the compressor channel 300 being lower than the bottom of the branch channel 400. By maintaining the maximum cross-sectional dimension of the compressor channel 300, the flow rate of the branch channel 400 and the evaporator channel 500 can be effectively accommodated. At the same time, the height difference between the bottoms of the branch channel 400 and the compressor channel 300 can be increased, ensuring that the refrigerant oil condensed on the cavity wall of the inner cavity 101 does not flow back into the branch channel 400, but instead flows back into the compressor channel 300.

[0073] Reference Figure 5Based on this, when installing the oil-blocking structure body 100, it can be tilted and fixed so that it is tilted towards one end of the compressor channel 300, further improving the compressor oil return effect. Using the tilt of the oil-blocking structure body 100 to achieve the tilt towards the compressor channel 300 is simpler in structure than setting the cavity wall of the inner cavity 101 at an angle towards the compressor channel 300, effectively reducing processing difficulty and providing higher controllability.

[0074] Combination Figure 1 and Figure 3 In some embodiments of this application, the inner cavity 101 includes a first sidewall 1013, which is opposite to the outer peripheral sidewall of the first segment 201. Both the branch channel 400 and the compressor channel 300 are disposed on the first sidewall 1013. Taking the end face of the first segment 201 as the boundary, the branch channel 400 is located on the right side of the end face, and the compressor channel 300 is located on the left side of the end face. When the refrigerant enters the evaporator channel 500 from the evaporator and exits through the opening 501, it needs to turn and enter the compressor channel 300. Most of the refrigerant oil carried will condense on the cavity wall of the inner cavity 101, and some will splash into the compressor channel 300, but it is difficult for it to enter the branch channel 400. Therefore, the structural design of this embodiment can effectively prevent refrigerant oil from entering the branch channel 400, which is beneficial for improving the oil return of the compressor channel 300.

[0075] In some embodiments of this application, the oil-blocking structure body 100 has a cubic structure, including a left end face 102, a right end face 103, an upper end face 105, a lower end face 104, a front end face, and a rear end face. The compressor channel 300 is vertically disposed on the left end face 102, the guide portion 200 is vertically disposed on the right end face 103, and the branch channel 400 is vertically disposed on the right end face 103. With this structural arrangement, the compressor channel 300 is located on the left side of the end face of the first section 201, and the branch channel 400 is located on the right side of the end face of the first section 201. When the refrigerant from the evaporator is introduced, most of the refrigerant oil it carries enters the compressor channel 300. A small amount of refrigerant oil splashes onto the side wall of the inner cavity 101 and the pipe wall of the first section 201, making it difficult for it to splash to the right along the outer pipe wall of the first section 201 to the branch channel 400, thus ensuring oil return from the compressor.

[0076] Combination Figure 1 In some embodiments of this application, the inner cavity 101 includes a first sidewall 1013 and a second sidewall 1012, and a first segment 201 is inserted into the inner cavity 101 from the second sidewall 1012. The first sidewall 1013 is opposite to the outer peripheral sidewall of the first segment 201. A compressor channel 300 is disposed on the first sidewall 1013, and a branch channel 400 is disposed on the second sidewall 1012. Furthermore, in conjunction with... Figure 4The end face of the first segment 201 is located in the area opposite to the compressor passage 300. When the refrigerant is introduced into the evaporator, some of the refrigerant oil it carries will splash into the compressor passage 300, and some will splash onto the side wall of the inner cavity 101. Since the branch passage 400 is located on the second side wall 1012 into which the first segment 201 is inserted, it is difficult for the refrigerant oil to splash into the branch passage 400. Therefore, this embodiment can also effectively prevent refrigerant oil from entering the branch passage 400, which helps to ensure the oil return of the compressor.

[0077] Reference Figure 1 In some embodiments of this application, the guide portion 200 further includes a second segment 202 located outside the oil-blocking structure body 100, with the first segment 201 and the second segment 202 coaxially distributed. The second segment 202 is used to connect to the evaporator.

[0078] Reference Figure 1 and Figure 2 In some embodiments of this application, the air conditioning oil-blocking structure includes an oil-blocking structure body 100 and a guide portion 200. The oil-blocking structure body 100 is a cubic structure, including a left end face 102, a right end face 103, an upper end face 105, a lower end face 104, a front end face, and a rear end face. The interior of the oil-blocking structure body 100 defines an inner cavity 101, which includes a first side wall 1013, a second side wall 1012, and a third side wall 1011. The second side wall 1012 is opposite to the right end face 103, and the third side wall 1011 is opposite to the left end face 102. The first side wall 1013 connects the second side wall 1012 and the third side wall 1011, together enclosing the inner cavity 101. The oil-blocking structure body 100 has a branch channel 400 vertically arranged on its rear end face and a compressor channel 300 vertically arranged on its left end face 102. The branch channel 400 and the compressor channel 300 are connected to the inner cavity 101 via the first side wall 1013 and the third side wall 1011, respectively. The guide part 200 is configured as an inner tube, one end of which passes through the right end face 103 of the oil-blocking structure body 100 and extends into the inner cavity 101. The pipe of the inner tube forms the evaporator channel 500. Furthermore, the left end of the inner tube extends to the left beyond the branch channel 400, so that the output end of the evaporator channel 500 is located on the left side of the branch channel 400. The compressor channel 300 is coaxially distributed with the inner tube, and the diameter of the compressor channel 300 is larger than the diameter of the inner tube.

[0079] During operation, the refrigerant of the evaporator enters the inner cavity 101 from the evaporator channel 500 and directly enters the compressor channel 300 through the left end. Although a small amount of refrigeration oil may splash around, it cannot splash into the branch channel 400 because the left end of the inner tube is located on the left side of the branch channel 400. This ensures that the refrigeration oil enters the compressor quickly and effectively prevents the refrigeration oil from entering the branch channel 400.

[0080] Furthermore, the bottom of the compressor passage 300 is flush with the bottom of the inner cavity 101, so that the refrigerant oil splashed onto the side wall of the inner cavity 101 can collect and flow back into the compressor.

[0081] Furthermore, a gap is maintained between the first sidewall 1013 and the periphery of the inner tube to ensure communication between the branch channel 400 and the compressor channel 300. It is understood that the size of this gap only needs to meet the system's operational requirements, and those skilled in the art can set it flexibly.

[0082] The second aspect of this application provides a thermal management system including the air conditioning oil-blocking structure of any of the above embodiments. It is understood that, during operation, the low-pressure, low-temperature refrigerant exiting the evaporator, when entering the inner cavity 101, carries refrigerant oil which, guided by the first section 201, crosses the branch channel 400, ensuring that at least a majority of the refrigerant oil enters the compressor through the compressor channel 300, thus completing the compressor's oil return process. This effectively prevents refrigerant oil from entering the branch channel 400, ensuring compressor oil return. Furthermore, the structure is simple, compact, and space-saving, making it suitable for space-constrained installations. It effectively addresses the shortcomings of traditional structures and fills the technological gap in oil-blocking design for automotive air conditioning systems in situations with limited installation space.

[0083] The third aspect of this application also proposes a vehicle using the aforementioned thermal management system. The vehicle in this embodiment can be a private car, such as a sedan, SUV, MPV, or pickup truck. The vehicle can also be a commercial vehicle, such as a van, bus, small truck, or large trailer. The vehicle can be a gasoline-powered vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0084] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. An air conditioning oil-blocking structure, characterized in that, include: An oil-blocking structure body, the oil-blocking structure body defining an inner cavity and a compressor channel and a branch channel communicating with the inner cavity; A guide portion is connected to the oil-blocking structure body and defines an evaporator channel. The guide portion includes a first section extending into the inner cavity, and the evaporator channel forms an opening communicating with the inner cavity on the end face of the first section. The branch channel and the compressor channel are arranged along the first segment toward the opening, and the end face of the first segment is located between the branch channel and the compressor channel along the axial direction of the first segment.

2. The air conditioning oil-blocking structure according to claim 1, characterized in that, The branch channel is at least opposite to a portion of the circumferential sidewall of the first segment.

3. The air conditioning oil-blocking structure according to claim 2, characterized in that, The compressor channel is opposite to the opening, and along the axial direction of the first segment, the projection of the compressor channel on the end face of the first segment at least partially coincides with the opening.

4. The air conditioning oil-blocking structure according to claim 3, characterized in that, The compressor channel and the evaporator channel are arranged coaxially.

5. The air conditioning oil-blocking structure according to claim 3, characterized in that, The branch channels are arranged in a direction perpendicular to the evaporator channels.

6. The air conditioning oil-blocking structure according to claim 1, characterized in that, The branch channel and the first section are located on the same end face of the oil-blocking structure body.

7. The air conditioning oil-blocking structure according to claim 1, characterized in that, The lowest point of the compressor channel is at a lower level than the lowest point of the branch channel.

8. The air conditioning oil-blocking structure according to claim 1, characterized in that, The inner cavity has an inclination angle that is inclined toward the compressor channel.

9. A thermal management system, characterized in that, Includes the air conditioning oil-blocking structure according to any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the thermal management system as described in claim 9.

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