Flow channel assembly, thermal management system and vehicle

Abstract

The utility model discloses a runner assembly, a heat management system and a vehicle, the runner assembly comprises a runner wall and a one-way valve, a runner cavity and a heat insulation cavity are arranged in the runner wall, the heat insulation cavity is arranged on the outer side of the runner cavity, and the runner cavity is provided with a runner inlet and a runner outlet; the one-way valve is configured to control one-way circulation of fluid from the heat insulation cavity to the flow channel cavity. According to the runner assembly provided by the embodiment of the utility model, the one-way valve is arranged in the runner cavity, so that the heat insulation cavity can be vacuumized conveniently, and the heat insulation effect of the heat insulation cavity on a refrigerant in the runner cavity is improved.

Description

Technical Field

[0001] This utility model is designed in the field of thermal management technology, specifically a flow channel component of a thermal management system, a thermal management system, and a vehicle. Background Technology

[0002] To reduce greenhouse gas emissions, countries worldwide have introduced very stringent regulations for the application of high-GWP (global warming potential) HFCs. In the automotive thermal management field, R290, with its excellent environmental performance, is widely used to replace the traditional R134a. However, R290 is flammable and explosive, belonging to the A3 class of refrigerants. To improve the safety of R290 applications in automotive thermal management systems, integrated automotive thermal management system architectures are widely used. Compared to traditional R134a systems, this can significantly reduce system size, lower refrigerant charge, and reduce internal joints, thus lowering the probability of refrigerant leakage. However, the application of integrated thermal management system architectures brings new challenges. Ineffective heat transfer between the refrigerant and the high-temperature walls in the suction duct has become one of the key factors limiting system performance improvement, placing higher demands on the insulation design of the suction duct. Utility Model Content

[0003] One objective of this invention is to provide a flow channel assembly, a thermal management system, and a vehicle that can reduce the ineffective heat exchange of refrigerant within the flow channel cavity and improve the performance of the thermal management system.

[0004] The flow channel assembly of the thermal management system according to an embodiment of the present invention includes: a flow channel wall and a one-way valve. The flow channel wall has a flow channel cavity and a heat insulation cavity. The heat insulation cavity is disposed outside the flow channel cavity. The flow channel cavity has a flow channel inlet and a flow channel outlet. The one-way valve is configured to control the unidirectional flow of fluid from the heat insulation cavity to the flow channel cavity.

[0005] According to the embodiment of the present invention, the flow channel component of the thermal management system can facilitate the evacuation of the insulation cavity by setting a one-way valve in the flow channel cavity, thereby improving the insulation effect of the insulation cavity on the refrigerant in the flow channel cavity.

[0006] In addition, the flow channel assembly of the thermal management system according to the above embodiments of the present invention may also have the following additional technical features:

[0007] In some embodiments, the heat insulation cavity is configured to surround the outside of the flow channel cavity, and the heat insulation cavity and the flow channel cavity extend along the same axis.

[0008] In some embodiments, the flow channel assembly further includes: a heat insulation tube disposed inside the flow channel wall, a flow channel cavity disposed inside the heat insulation tube, and the heat insulation cavity being disposed between the heat insulation tube and the inner wall surface of the flow channel wall.

[0009] In some embodiments, the first end of the heat insulation tube is located inside the inlet end of the flow channel wall, and the second end of the heat insulation tube is located inside the outlet end of the flow channel wall; and / or, the peripheral wall of the first end of the heat insulation tube is closed with the peripheral wall of the inlet end of the flow channel wall, and the second end of the heat insulation tube is connected to the one-way valve.

[0010] In some embodiments, the flow channel inlet is located at the first end of the heat insulation pipe; and / or, the flow channel outlet is located on the peripheral wall of the heat insulation pipe.

[0011] In some embodiments, the one-way valve is built into the heat insulation tube; and / or, the one-way valve is coaxial with the heat insulation tube.

[0012] In some embodiments, the thermal conductivity of the insulation tube is no greater than 0.3 W / (m·K).

[0013] In some embodiments, the heat insulation cavity and the flow channel cavity are arranged side by side.

[0014] In some embodiments, the one-way valve includes a first support portion, a second support portion, an elastic element, and a plug. The first support portion is located downstream of the second support portion along the flow direction of the one-way valve. The second support portion has an air intake port. The elastic element elastically drives the plug to block the air intake port, and the plug can move along the flow direction to open the air intake port.

[0015] A thermal management system according to an embodiment of the present invention includes a compressor, a condenser, a liquid receiver, and an evaporator, characterized in that the thermal management system further includes the aforementioned flow channel assembly.

[0016] In some embodiments, the flow channel inlet is connected to the evaporator, and the flow channel outlet is connected to the compressor.

[0017] In some embodiments, the flow channel cavity passes through at least one of the compressor, the condenser, the liquid receiver, and the evaporator.

[0018] In some embodiments, the compressor includes a high-pressure housing and a low-pressure housing, the low-pressure housing, the high-pressure housing, the condenser, the liquid receiver, and the evaporator being distributed along the axial direction of the compressor, and the flow channel cavity passing through the low-pressure housing, the high-pressure housing, the condenser, the liquid receiver, and the evaporator.

[0019] The vehicle according to an embodiment of the present invention includes a flow channel assembly of the aforementioned thermal management system; and / or includes the aforementioned thermal management system. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the flow channel assembly according to some embodiments of the present invention.

[0021] Figure 2 yes Figure 1 A magnified view of a portion of area A in the middle circle.

[0022] Figure 3 This is a cross-sectional view of a flow channel assembly according to some embodiments of the present invention, wherein a one-way valve is in operation.

[0023] Figure 4 This is a cross-sectional view of a flow channel assembly according to some embodiments of the present invention, wherein a one-way valve is shut off.

[0024] Figure 5 This is a three-dimensional schematic diagram of the thermal management system in some embodiments of this utility model.

[0025] Figure 6 yes Figure 5 A magnified view of a portion of area B in the middle circle, showing the one-way valve shut off.

[0026] Figure label:

[0027] Flow channel assembly 10, flow channel wall 11, flow channel cavity 111, heat insulation cavity 112, flow channel inlet 113, flow channel outlet 114, heat insulation pipe 12, one-way valve 13, first support part 131, second support part 132, elastic element 133, plug 134, air intake 135, compressor 20, high pressure housing 21, low pressure housing 22, condenser 30, liquid receiver 40, evaporator 50, thermal management system 100. Detailed Implementation

[0028] In related technologies, the integrated thermal management system 100 has not yet taken heat insulation measures for the flow channel wall 11. Under low load conditions, the compressor 20 operates at a low speed, and the refrigerant at the outlet of the evaporator 50 undergoes ineffective heat exchange between the flow channel wall 11 and the high-temperature walls of components such as the liquid receiver 40, condenser 30, and high-pressure housing 21 and low-pressure housing 22 of the compressor 20 in the thermal management system 100. This limits the improvement of the system's coefficient of performance (COP). This invention can significantly reduce the ineffective heat exchange of the refrigerant in the flow channel cavity 111 by constructing a heat insulation cavity 112 between the flow channel wall 11 and the flow channel cavity 111.

[0029] In the thermal management system 100 of this invention, low-temperature, low-pressure gaseous or two-phase refrigerant exits from the evaporator 50 outlet and enters the compressor 20 suction port through the flow channel cavity 111. Within the flow channel wall 11, the refrigerant exchanges heat with the high-temperature walls of the receiver 40, condenser 30, and the high-pressure casing 21 and low-pressure casing 22 of the compressor 20, respectively. This heat cannot be used by the user and is considered ineffective heat exchange, leading to increased refrigerant superheat at the compressor 20 suction port and reduced suction mass flow rate, significantly affecting system performance. Therefore, a heat insulation structure is needed for the flow channel wall 11 of the integrated thermal management system 100.

[0030] The related thermal management system 100 does not yet implement effective heat insulation measures for the flow channel wall 11. However, the ineffective heat exchange between the low-temperature, low-pressure refrigerant and the high-temperature wall surface within the flow channel wall 11 is not negligible, especially under EVtest (Electric Vehicle Test System) conditions. In such cases, the ineffective heat exchange of the refrigerant within the flow channel wall 11 may account for approximately 10% of the total heat exchange. Under low-temperature heat pump conditions, a higher suction superheat will result in a higher exhaust temperature, significantly limiting the system's maximum capacity. In short, the ineffective heat exchange between the refrigerant and the high-temperature wall surface within the flow channel wall 11 significantly affects system performance. Therefore, this invention provides a flow channel assembly 10, a thermal management system 100, and a vehicle.

[0031] The embodiments of this utility model 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 intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] like Figure 1 According to an embodiment of the present invention, the flow channel assembly 10 of the thermal management system 100 includes a flow channel wall 11 and a one-way valve 13. The flow channel wall 11 has a flow channel cavity 111 and an insulation cavity 112. The flow channel cavity 111 can be used for refrigerant flow, and the insulation cavity 112 can insulate the flow channel cavity 111 from other pipelines or the external environment to reduce ineffective heat exchange. The insulation cavity 112 can be located outside the flow channel cavity 111. The flow channel cavity 111 has a flow channel inlet 113 and a flow channel outlet 114. Refrigerant can enter the flow channel cavity 111 from the flow channel inlet 113 and exit the flow channel cavity 111 from the flow channel outlet 114. The one-way valve 13 is configured to control the unidirectional flow of fluid from the insulation cavity 112 to the flow channel cavity 111. The one-way valve 13 can restrict the flow of fluid from the flow channel cavity 111 to the insulation cavity 112, and allow fluid in the insulation cavity 112 to flow into the flow channel cavity 111.

[0033] When air is evacuated from the flow channel cavity 111, the air pressure inside the flow channel cavity 111 decreases. When the air pressure inside the insulation cavity 112 is higher than that inside the flow channel cavity 111, the one-way valve 13 opens, and the fluid inside the insulation cavity 112 flows into the flow channel cavity 111 and is eventually discharged through the suction structure, thus creating a negative pressure space inside the insulation cavity 112. When fluid is introduced into the flow channel cavity 111, the air pressure inside the flow channel cavity 111 increases, and the air pressure inside the flow channel cavity 111 is higher than that inside the insulation cavity 112. The one-way valve 13 closes, and the fluid inside the flow channel cavity 111 does not flow into the insulation cavity 112, thus maintaining the negative pressure state inside the insulation cavity 112.

[0034] According to the embodiment of the present utility model, the flow channel assembly 10 of the thermal management system 100 can be equipped with a one-way valve 13 to facilitate the evacuation of the heat insulation cavity 112, thereby improving the heat insulation effect of the heat insulation cavity 112 on the refrigerant in the flow channel cavity 111, increasing the thermal resistance of the heat insulation cavity 112, reducing ineffective heat exchange during the operation of the thermal management system 100, and improving energy efficiency.

[0035] like Figure 1 In some embodiments, the heat insulation cavity 112 is configured to surround the outer side of the flow channel cavity 111, and the heat insulation cavity 112 and the flow channel cavity 111 extend along the same axis. The annular cavity can be used to achieve heat insulation of the outer periphery of the flow channel cavity 111, thereby improving the heat insulation effect of the flow channel cavity 111.

[0036] Optionally, the flow channel assembly 10 further includes a heat insulation tube 12, which is disposed inside the flow channel wall 11. A flow channel cavity 111 is disposed inside the heat insulation tube 12, and the heat insulation cavity 112 is disposed between the heat insulation tube 12 and the inner wall surface of the flow channel wall 11. The heat insulation tube 12 can be used to separate the heat insulation cavity 112 and the flow channel cavity 111 within the flow channel wall 11. The structure is simple and easy to implement, which can simplify the structure of the flow channel assembly 10, facilitate molding, and improve the structural strength of the heat insulation tube 12 and the flow channel wall 11, so that the heat insulation tube 12 and the flow channel wall 11 have greater compressive strength, thereby improving safety and stability and preventing refrigerant leakage.

[0037] The first end of the heat insulation pipe 12 is located inside the inlet end of the flow channel wall 11, and the second end of the heat insulation pipe 12 is located inside the outlet end of the flow channel wall 11. This forms a heat insulation cavity 112 surrounding the flow channel cavity 111 between the heat insulation pipe 12 and the flow channel wall 11, improving the insulation effect on the flow channel cavity 111, reducing heat exchange between the flow channel cavity 111 and the outside of the flow channel wall 11, and improving the energy efficiency of the thermal management system 100.

[0038] Optionally, the peripheral wall of the first end of the heat insulation pipe 12 can be sealed with the peripheral wall of the inlet end of the flow channel wall 11, and the second end of the heat insulation pipe 12 is connected to a one-way valve 13. This can avoid the influence of the one-way valve 13 on the refrigerant flow path of the flow channel cavity 111, improve the stability of the flow channel assembly 10, and facilitate the formation of a longer heat insulation cavity 112 to achieve heat insulation of the flow channel cavity 111.

[0039] Optionally, the flow channel wall 11 and the heat insulation pipe 12 can be configured as a coaxial tubular structure. An end plate can be connected between the inlet end peripheral wall of the flow channel wall 11 and the first end peripheral wall of the heat insulation pipe 12. The inner periphery of the end plate is connected to the first end peripheral wall of the heat insulation pipe 12, and the outer periphery of the end plate is connected to the second section of the peripheral wall of the heat insulation pipe 12. Alternatively, the inlet end peripheral wall of the flow channel wall 11 can be configured as an inwardly narrowing channel; or the first end peripheral wall of the heat insulation pipe 12 can be configured as an outwardly expanding structure, and the inlet end peripheral wall of the flow channel wall 11 and the first end peripheral wall of the heat insulation pipe 12 can be directly connected to form a closed structure.

[0040] Furthermore, the one-way valve 13 in this invention can be built into the heat insulation tube 12, thereby simplifying the structure of the flow channel assembly 10. Further, the one-way valve 13 is coaxial with the heat insulation tube 12. This simplifies the assembly of the one-way valve 13 and the heat insulation tube 12 and improves the stability of the one-way valve 13.

[0041] In some embodiments, the flow channel inlet 113 is located at the first end of the heat insulation pipe 12, which facilitates refrigerant flow and reduces flow resistance during refrigerant flow, thereby improving energy efficiency. Optionally, the flow channel outlet 114 is located on the peripheral wall of the heat insulation pipe 12. In addition, the flow channel assembly 10 may also include an outlet flow path, which may be configured to extend radially along the heat insulation pipe 12 and connect to the internal space of the heat insulation pipe 12. The outlet flow path may also be configured to penetrate the heat insulation pipe 12 and the flow channel wall 11 to facilitate connection to the suction port of the compressor 20.

[0042] Optionally, the thermal conductivity of the insulation pipe 12 is not greater than 0.3 W / (m·K). The insulation pipe 12 is constructed as a tubular insulation structure, and the insulation cavity 112 is set as a negative pressure insulation structure. By utilizing the combination of the tubular insulation structure and the negative pressure insulation structure, the insulation effect can be optimized, ineffective heat exchange can be further reduced, and energy efficiency can be improved.

[0043] In the foregoing embodiments, the description mainly takes the heat insulation cavity 112 surrounding the flow channel cavity 111 as an example to achieve effective heat insulation of the flow channel cavity 111. However, the technical solution to be protected by this utility model is not limited to this. In this utility model, the local heat insulation of the flow channel cavity 111 can also be used to achieve the purpose of directional heat insulation.

[0044] like Figure 1In some embodiments, the heat insulation cavity 112 and the flow channel cavity 111 are arranged side by side. By arranging them side by side, heat insulation treatment can be performed on the flow channel cavity 111 in a specific direction. For other areas that have little impact on reducing ineffective heat transfer or where energy efficiency can be improved through heat transfer, heat insulation treatment of the heat insulation cavity 112 is not required, which can further optimize the performance of the flow channel assembly 10.

[0045] Combination Figures 2 to 4 as well as Figure 6 In some embodiments, the one-way valve 13 includes a first support portion 131, a second support portion 132, an elastic element 133, and a plug 134. The first support portion 131 is located downstream of the second support portion 132 along the flow direction of the one-way valve 13. The second support portion 132 has an air intake port 135. The elastic element 133 elastically drives the plug 134 to block the air intake port 135, and the plug 134 can move along the flow direction to open the air intake port 135. Optionally, the elastic element 133 can be supported between the first support portion 131 and the plug 134, and the elastic element 133 can be configured to be in a state where it drives the plug 134 to block the air intake port 135, which can improve the stability of the one-way valve 13. Of course, the present invention can also use other methods to position the elastic element 133. Setting the elastic element 133 to abut against the first support portion and the plug 134 is merely one embodiment of the present invention.

[0046] In conjunction with the aforementioned embodiments, the one-way valve 13 can be internally integrated into the flow channel cavity 111. Furthermore, the one-way valve 13 can be internally integrated into the heat insulation tube 12, wherein the first support portion 131 and the second support portion 132 can be connected to the heat insulation tube 12. The first support portion 131 can be located inside the heat insulation tube 12, and the second support portion 132 can be located at the end edge of the second end of the heat insulation tube 12. The first support portion 131 can be configured with a hollow structure, allowing the fluid to pass smoothly through the first support portion 131 after the one-way valve 13 opens during the flow channel cavity 111 from the heat insulation cavity 112. Simultaneously, the first support portion 131 can also provide support for the elastic element 133, etc., to maintain the one-way conduction function of the one-way valve 13. The second support portion 132 can be configured with an air intake 135, wherein the air intake 135 can be configured as a gradually expanding orifice along the conduction direction of the one-way valve 13.

[0047] Furthermore, at least a portion of the plug 134 can be configured as a tapered shape that gradually expands along the conduction direction of the one-way valve 13. This allows a portion of the plug 134 to be inserted into the air inlet when it blocks the inlet, thereby improving the sealing effect of the plug 134 and enhancing the stability of the one-way valve 13. When both the plug 134 and the intake port 135 are configured with tapered structures, the sealing effect of the plug 134 on the intake port 135 can be further improved, maintaining the stability of the flow channel assembly 10.

[0048] like Figure 5 The thermal management system 100 according to an embodiment of the present invention includes a compressor 20, a condenser 30, a liquid receiver 40 and an evaporator 50, and the thermal management system 100 also includes the aforementioned flow channel assembly 10.

[0049] According to the embodiment of the present invention, the thermal management system 100 achieves thermal isolation between the flow channel cavity 111 and the external pipeline by using the heat insulation cavity 112, which improves the thermal resistance, reduces ineffective heat exchange, and can improve the heat insulation effect of the refrigerant flow path, thereby optimizing the performance of the thermal management system 100.

[0050] In some embodiments, the flow channel inlet 113 connects to the evaporator 50, and the flow channel outlet 114 connects to the compressor 20. After the compressor 20 compresses the refrigerant, it flows sequentially through the condenser 30, the receiver 40, and the evaporator 50, and then gradually flows back to the compressor 20 through the flow channel to form a refrigerant circulation path. Cooling and heating are achieved by utilizing the phase change of the refrigerant, thus realizing thermal management. Of course, the flow channel assembly 10 in this invention can also be located in other positions, such as connecting between the compressor 20 and the condenser 30.

[0051] In some embodiments, the flow channel cavity 111 passes through at least one of the compressor 20, condenser 30, liquid receiver 40, and evaporator 50. This includes, but is not limited to: the evaporator 50 may have a fifth flow channel portion; and / or, the liquid receiver 40 may have a fourth flow channel portion; and / or, the condenser 30 may have a third flow channel portion; and / or, the compressor 20 may have a flow channel portion. Optionally, the compressor 20 may include a high-pressure housing 21 and a low-pressure housing 22, the high-pressure housing 21 having a second flow channel portion and the low-pressure housing 22 having a first flow channel portion. This reduces the volume of the thermal management system 100. Furthermore, by integrating at least a portion of the flow channel cavity 111 into at least one of the compressor 20, condenser 30, liquid receiver 40, and evaporator 50, the thermal insulation structure of this invention can further reduce ineffective heat transfer.

[0052] Optionally, the compressor 20 includes a high-pressure housing 21 and a low-pressure housing 22. Specifically, the compressor 20 includes a high-pressure housing 21 and a low-pressure housing 22. After the compression unit in the high-pressure housing 21 compresses the refrigerant, it flows sequentially through the condenser 30, the liquid receiver 40 and the evaporator 50, and then flows back to the low-pressure housing 22 through the flow channel cavity 111.

[0053] like Figure 5In some embodiments, the compressor 20 includes a high-pressure housing 21 and a low-pressure housing 22. The low-pressure housing 22, the high-pressure housing 21, the condenser 30, the liquid receiver 40, and the evaporator 50 are distributed along the axial direction of the compressor 20. The flow channel cavity 111 passes through the low-pressure housing 22, the high-pressure housing 21, the condenser 30, the liquid receiver 40, and the evaporator 50. For example, the compressor 20 includes a high-pressure housing 21 and a low-pressure housing 22. The liquid receiver 40 has a fourth flow channel portion, the condenser 30 has a third flow channel portion, the high-pressure housing 21 has a second flow channel portion, and the low-pressure housing 22 has a first flow channel portion. The fourth flow channel portion, the third flow channel portion, the second flow channel portion, and the first flow channel portion are sequentially connected. The flow channel cavity 111 and the heat insulation cavity 112 are provided with one or at least two adjacent flow channels of the fourth flow channel portion, the third flow channel portion, the second flow channel portion, and the first flow channel portion.

[0054] In some embodiments, the low-pressure housing 22, the high-pressure housing 21, the condenser 30, the liquid receiver 40, and the evaporator 50 are distributed along the axial direction of the compressor 20, and the flow channel cavity 111 passes through the low-pressure housing 22, the high-pressure housing 21, the condenser 30, the liquid receiver 40, and the evaporator 50. With the above arrangement, the entire flow channel cavity 111 can be insulated using the heat insulation cavity 112 and the heat insulation pipe 12, optimizing the heat insulation effect on the refrigerant flow channel cavity 111 and improving the performance of the thermal management system 100.

[0055] The evaporator 50 can be connected to the flow channel cavity 111. The evaporator 50 includes an outlet pipe, and the flow channel cavity 111 includes a refrigerant interface and a flow channel body distributed along the axis. The outlet pipe passes through the refrigerant interface. The matching of the outlet pipe and the refrigerant interface can achieve a stable matching between the outlet pipe and the refrigerant interface, which facilitates assembly and improves the stability and assembly efficiency of the thermal management system 100.

[0056] Optionally, the diameter of the inner wall of the refrigerant interface is larger than the diameter of the inner wall of the flow channel body; and / or, the radial dimension of the inner wall of the outlet pipe is greater than or equal to the radial dimension of the inner wall of the flow channel body. This facilitates quick assembly of the outlet pipe and the refrigerant interface.

[0057] The present invention also provides a vehicle including the flow channel assembly 10 of the aforementioned thermal management system 100; and / or including the aforementioned thermal management system 100.

[0058] The flow channel assembly 10 and the thermal management system 100 of this utility model are described below with reference to the accompanying drawings.

[0059] Combination Figure 5The thermal management system 100 includes an evaporator 50, a condenser 30, a liquid receiver 40, a low-pressure housing 22, a high-pressure housing 21, and a flow channel assembly 10. The flow channel assembly 10 includes a flow channel wall 11, a one-way valve 13, and a heat insulation pipe 12. The flow channel wall 11 has a flow channel cavity 111 and a heat insulation cavity 112. The heat insulation pipe 12 is disposed inside the flow channel wall 11, and the flow channel cavity 111 is disposed inside the heat insulation pipe 12. The peripheral wall of the first end of the heat insulation pipe 12 is closed with the inlet end of the flow channel wall 11. The outer wall of the heat insulation pipe 12 and the flow channel wall 11 form a heat insulation cavity 112. The flow channel inlet 113 is disposed at the first end of the heat insulation pipe 12, and the flow channel outlet 114 is disposed at the peripheral wall of the heat insulation pipe 12. The refrigerant flows in the flow channel cavity 111.

[0060] The evaporator 50 includes an outlet pipe, and the flow channel cavity 111 includes a refrigerant interface and a flow channel body, with the outlet pipe passing through the refrigerant interface. The receiver 40 has a fourth flow channel section, the condenser 30 has a third flow channel section, the high-pressure housing 21 has a second flow channel section, and the low-pressure housing 22 has a first flow channel section. The fourth, third, second, and first flow channel sections are sequentially connected, and the flow channel cavity 111 and the insulation cavity 112 pass through the fourth, third, second, and first flow channel sections. The flow channel cavity 111 has a flow channel inlet 113 and a flow channel outlet 114, with the flow channel inlet 113 connected to the outlet pipe of the evaporator 50 and the flow channel outlet 114 connected to the suction port of the compressor 20.

[0061] The outlet pipe can connect to the inlet of the fourth flow channel of the liquid receiver, the outlet of the fourth flow channel of the liquid receiver connects to the inlet of the third flow channel of the condenser, the outlet of the third flow channel of the condenser connects to the inlet of the second flow channel of the high-pressure housing, and the outlet of the second flow channel of the high-pressure housing connects to the inlet of the first flow channel of the low-pressure housing. The fourth, third, first, and second flow channels together constitute the flow channel assembly of the integrated thermal management system. The inlet of the flow channel cavity connects to the outlet of the evaporator, and the outlet of the flow channel cavity connects to the suction port of the compressor.

[0062] The flow channel assembly includes: a flow channel wall, a heat insulation cavity, a heat insulation tube, a flow channel cavity, a first support, an exhaust port, a second support, an elastic element (e.g., a spring), a plug, and an intake port. The heat insulation tube is embedded in the flow channel wall, and the inlet of the heat insulation tube must be sealed to the inlet end face of the flow channel cavity. The flow channel wall and the heat insulation tube form a heat insulation cavity.

[0063] The one-way valve is built into the heat insulation tube and is coaxial with the heat insulation tube. The first support part is connected to the inner wall of the heat insulation tube, which plays a role in positioning and support. One side of the exhaust port is connected to the first support part, and the other side of the exhaust port is connected to the wall of the one-way valve. The spring and the plug are built into the wall of the one-way valve. One side of the spring is connected to the wall of the one-way valve, and the other side is connected to the plug. The air intake of the heat insulation chamber is connected to the wall of the one-way valve and the wall of the heat insulation tube respectively.

[0064] Combination Figure 2 and Figure 4 A one-way valve 13 is disposed inside the heat insulation pipe 12 and is coaxially arranged with the heat insulation pipe 12. The one-way valve 13 also includes a first support part 131, a second support part 132, an elastic element 133, and a plug 134. The first support part 131 and the second support part 132 are connected to the inner wall surface of the heat insulation pipe 12. The first support part 131 is disposed inside the heat insulation pipe 12 and has an air intake port. The second support part 132 is disposed on the end face of the second end of the heat insulation pipe 12 and has an air intake port 135. The elastic element 133 and the plug 134 are connected and disposed between the first support part 131 and the second support part 132. The elastic element 133 is used to drive the plug 134 to block or open the air intake port 135.

[0065] Combination Figures 1 to 3 When the thermal management system 100 evacuates from the flow channel inlet 113, the refrigerant in the flow channel cavity 111 is drawn out of the flow channel cavity 111. The pressure in the flow channel cavity 111 is less than the pressure in the insulation cavity 112. The elastic element 133 is compressed by the pressure in the insulation cavity 112. The plug 134 leaves the suction port 135, the suction port 135 opens, and the gas in the insulation cavity 112 is drawn out to form a vacuum cavity. This increases the thermal resistance of the insulation cavity 112 and reduces the ineffective heat exchange between the refrigerant in the flow channel cavity 111 and the high-temperature walls of components such as the liquid receiver 40, condenser 30, high-pressure shell 21, and low-pressure shell 22 in the thermal management system 100. After the gas in the insulation cavity 112 is extracted, the pressure in the insulation cavity 112 decreases. When the pressure difference between the insulation cavity 112 and the flow channel cavity 111 is less than the elastic force of the elastic element 133, the elastic element 133 releases its elastic potential energy and drives the plug 134 to seal the air intake 135, thus forming a vacuum cavity inside the insulation cavity 112. Figure 4 and Figure 6 As shown.

[0066] like Figure 4 and Figure 6 When the thermal management system 100 is charged with refrigerant, the pressure in the flow channel cavity 111 is greater than the pressure in the insulation cavity 112. The elastic element 133 is in an extended state and drives the plug 134 to block the suction port 135. The refrigerant gas charged in the flow channel cavity 111 applies pressure to the plug 134, so that the plug 134 and the suction port 135 are tightly connected. A sealed cavity is formed in the insulation cavity 112, preventing refrigerant from entering the insulation cavity 112 and maintaining a low gas pressure in the insulation cavity 112 to ensure the heat preservation effect of the insulation cavity 112.

[0067] The thermal management system of this utility model may include: a low-pressure housing, a high-pressure housing, a condenser, a liquid receiver, an evaporator, and a flow channel cavity. The flow channel cavity of the liquid receiver, the condenser, the compressor high-pressure housing, and the low-pressure housing together constitute the flow channel cavity of the integrated thermal management system. The inlet of the flow channel cavity is connected to the outlet of the evaporator, and the outlet of the flow channel cavity is connected to the suction port of the compressor.

[0068] Optionally, when the thermal management system is evacuated, the pressure pin in the flow channel cavity is less than the pressure pout in the insulation cavity. The spring is compressed, the suction port opens, and the gas in the insulation cavity is evacuated to form a vacuum cavity. As the gas in the insulation cavity is evacuated, the pressure pout in the insulation cavity decreases. When the pressure difference between the insulation cavity and the flow channel cavity is less than the spring force, the spring extends, and the plug contacts the suction port to form a sealed cavity.

[0069] When the system is charged with refrigerant, the pressure pout in the insulation cavity is less than the pressure pin in the flow channel cavity. The refrigerant gas charged in the flow channel cavity will exert pressure on the plug, causing it to come into close contact with the suction port and form a good seal.

[0070] The figure below shows an application example of the vacuum insulation structure for the flow channel cavity of the integrated automotive thermal management system proposed in this utility model.

[0071] When the thermal management system is evacuated, the pressure pin in the flow channel cavity is less than the pressure pout in the insulation cavity. The spring is compressed, the air intake is opened, and the gas in the insulation cavity is evacuated to form a vacuum cavity.

[0072] As the gas inside the insulation cavity is extracted, the pressure pout in the insulation cavity decreases. When the pressure difference between the insulation cavity and the flow channel cavity is less than the spring force, the spring extends, and the plug contacts the air intake, forming a sealed cavity.

[0073] When the system is charged with refrigerant, the pressure pout in the insulation cavity is less than the pressure pin in the flow channel cavity. The refrigerant gas charged in the flow channel cavity will exert pressure on the plug, making it come into close contact with the suction port and forming a seal.

[0074] The key to this structure is to ensure proper sealing at the inlet of the flow channel cavity and the inlet of the insulation pipe, as well as sealing at the plug and the air intake of the insulation pipe. This ensures a low gas pressure inside the insulation cavity, giving the structure a better insulation effect.

[0075] This utility model provides a vacuum insulation structure for the flow channel cavity of an integrated automotive thermal management system, relating to the field of automotive thermal management technology. The insulation structure comprises: a flow channel wall, an insulation cavity, an insulation tube, a first support portion, an exhaust port, a second support portion, a spring, a plug, and an intake port. The insulation tube is built into the flow channel cavity, with its inlet sealed to the inlet end face of the flow channel cavity. The flow channel cavity wall and the insulation tube form an insulation cavity. A one-way valve is built into the insulation tube and is coaxial with it. The first support portion is connected to the inner wall of the insulation tube, serving a positioning and supporting function. The spring and the plug are built between the first and second support portions, with one side of the spring connected to the first support portion and the other side connected to the plug. The intake port is connected to both the first wall and the wall of the insulation tube. This invention can form a vacuum insulation layer in the flow channel cavity of the integrated thermal management system. The insulation effect provided by this invention is far greater than that of other insulation methods, which greatly reduces the ineffective heat exchange between the low-temperature, low-pressure refrigerant in the flow channel cavity and the high-temperature walls of the system (high-pressure receiver, condenser, compressor high-pressure shell and low-pressure body), thereby improving the performance of the integrated automotive thermal management system.

[0076] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0079] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A flow channel assembly (10) of a thermal management system (100), characterized by, The flow channel assembly (10) comprises: a flow channel wall (11) having a flow channel cavity (111) and a heat insulation cavity (112) inside, the heat insulation cavity (112) being arranged outside the flow channel cavity (111), the flow channel cavity (111) having a flow channel inlet (113) and a flow channel outlet (114); a one-way valve (13) configured to control one-way flow of fluid from the heat insulation cavity (112) to the flow channel cavity (111).

2. The flow channel assembly (10) of claim 1, wherein, The heat insulation cavity (112) is arranged around the outside of the flow channel cavity (111), and the heat insulation cavity (112) and the flow channel cavity (111) extend along the same axis.

3. The flow channel assembly (10) of claim 2, wherein, The flow channel assembly (10) further comprises: a heat insulation pipe (12) arranged inside the flow channel wall (11), the flow channel cavity (111) being arranged inside the heat insulation pipe (12), and the heat insulation cavity (112) being arranged between the heat insulation pipe (12) and the inner wall surface of the flow channel wall (11).

4. The flow channel assembly (10) of claim 3, wherein, The first end of the heat insulation pipe (12) is arranged inside the inlet end of the flow channel wall (11), and the second end of the heat insulation pipe (12) is arranged inside the outlet end of the flow channel wall (11); and / or, the peripheral wall of the first end of the heat insulation pipe (12) is closed with the peripheral wall of the inlet end of the flow channel wall (11), and the second end of the heat insulation pipe (12) is connected to the one-way valve (13).

5. The flow channel assembly (10) of claim 4, wherein, The flow channel inlet (113) is arranged at the first end of the heat insulation pipe (12); and / or, the flow channel outlet (114) is arranged at the peripheral wall of the heat insulation pipe (12).

6. The flow channel assembly (10) of claim 3, wherein, The one-way valve (13) is arranged inside the heat insulation pipe (12); and / or, the one-way valve (13) is coaxial with the heat insulation pipe (12).

7. The flow channel assembly (10) of claim 3, wherein, The thermal conductivity of the heat insulation pipe (12) is not greater than 0.3 W / (m·K).

8. The flow channel assembly (10) of claim 1, wherein, The heat insulation cavity (112) and the flow channel cavity (111) are arranged side by side.

9. The runner assembly (10) according to any one of claims 1-8, characterized in that The one-way valve (13) comprises a first support part (131), a second support part (132), an elastic member (133), and a plug (134), the first support part (131) being arranged downstream of the second support part (132) in the flow direction of the one-way valve (13), the second support part (132) having an air suction port (135), the elastic member (133) elastically driving the plug (134) to block the air suction port (135), and the plug (134) being movable in the flow direction to open the air suction port (135).

10. A thermal management system (100) comprising a compressor (20), a condenser (30), a reservoir (40), and an evaporator (50), characterized in that, The heat management system (100) further comprises the flow channel assembly (10) according to any one of claims 1-8.

11. The thermal management system (100) of claim 10, characterized in that The flow channel inlet (113) is connected to the evaporator (50), and the flow channel outlet (114) is connected to the compressor (20).

12. The thermal management system (100) of claim 10, wherein, The flow channel cavity (111) penetrates at least one of the compressor (20), the condenser (30), the liquid accumulator (40), and the evaporator (50).

13. The thermal management system (100) of claim 12, characterized by The compressor (20) comprises a high-pressure shell (21) and a low-pressure shell (22), the low-pressure shell (22), the high-pressure shell (21), the condenser (30), the reservoir (40) and the evaporator (50) are distributed along the axial direction of the compressor (20), and the flow channel cavity (111) penetrates the low-pressure shell (22), the high-pressure shell (21), the condenser (30), the reservoir (40) and the evaporator (50).

14. A vehicle characterized by comprising: A flow channel assembly (10) comprising the thermal management system (100) of any one of claims 1-9; and / or a thermal management system (100) comprising any one of claims 10-13.

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