Gas-liquid separation device, thermal management system, and vehicle

By designing a gas-liquid separation device, gradually reducing the inner diameter of the shell, and accelerating the separation of water and air with a spiral structure, the problem of low exhaust efficiency of the three-way pipe was solved, and a thermal management system with rapid exhaust and low energy consumption was realized.

CN224498845UActive Publication Date: 2026-07-14CHONGQING JINKANG NEW ENERGY VEHICLE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING JINKANG NEW ENERGY VEHICLE CO LTD
Filing Date
2025-07-17
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In existing technologies, the exhaust efficiency of the three-way pipe in the vehicle thermal management HVAC system is low, and it requires a long period of circulation to completely remove the air from the thermal management system.

Method used

Design a gas-liquid separation device where the inner diameter of the shell gradually decreases from the exhaust port towards the drain port. Combined with a spiral structure, gravity and spiral flow are used to accelerate the separation of water and air. The water inlet is eccentrically positioned to optimize the flow path.

Benefits of technology

It enables rapid removal of air from the thermal management system, improves gas-liquid separation efficiency, and reduces energy loss.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224498845U_ABST
    Figure CN224498845U_ABST
Patent Text Reader

Abstract

The utility model relates to a kind of gas-liquid separation device, thermal management system and vehicle, including shell, the shell is equipped with cavity, and with the cavity communication exhaust port and drain, the exhaust port is located at the top of the shell, the drain is located at the bottom of the shell;Wherein, from the direction of the exhaust port towards the drain: the inner diameter of the cavity gradually decreases.The gas-liquid separation device, thermal management system and vehicle of the scheme can quickly exhaust air in the thermal management system.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application belongs to the field of gas-liquid separation technology, specifically relating to a gas-liquid separation device, a thermal management system, and a vehicle. Background Technology

[0002] Currently, in vehicle thermal management HVAC systems, a T-junction is typically used to separate water and air to expel air flowing from the heater core. However, the T-junction has low exhaust efficiency and requires a long circulation time to completely remove the air from the thermal management system. Utility Model Content

[0003] The purpose of this invention is to provide a gas-liquid separation device, a thermal management system, and a vehicle that can quickly exhaust the air from the thermal management system.

[0004] The first aspect of this utility model discloses a gas-liquid separation device, including a housing, the housing having a cavity, and an exhaust port and a drain port communicating with the cavity. The exhaust port is located at the top of the housing, and the drain port is located at the bottom of the housing; wherein, from the exhaust port toward the drain port, the inner diameter of the cavity gradually decreases.

[0005] In one exemplary embodiment, the housing includes an upper shell section and a lower shell section, the upper shell section having a water inlet and an exhaust outlet, and the drain outlet located in the lower shell section; the cavity includes an upper cavity located in the upper shell section and a lower cavity located in the lower shell section, which are interconnected; from the exhaust outlet toward the drain outlet: the inner diameter of the upper cavity is larger than the inner diameter of the lower cavity, and the inner diameter of the lower cavity gradually decreases.

[0006] In one exemplary embodiment, the gas-liquid separation device further includes a spiral structure located within the cavity and connected to the housing.

[0007] In one exemplary embodiment, the drain outlet and the vent outlet are coaxially arranged and both are located at the center of the cavity.

[0008] In one exemplary embodiment, the water inlet is located on the side peripheral surface of the upper shell section, and the center of the water inlet is offset relative to the center of the cavity.

[0009] The second aspect of this utility model discloses a thermal management system, including the gas-liquid separation device described above.

[0010] In one exemplary embodiment, the thermal management system further includes a heater core, and the inlet of the gas-liquid separator is connected to the outlet of the heater core.

[0011] In one exemplary embodiment, the thermal management system further includes an oil cooler, a water heater, and a three-way valve, wherein the drain outlet is connected to the inlet of the oil cooler and the inlet of the water heater via the three-way valve.

[0012] In one exemplary embodiment, the thermal management system further includes a kettle, and the vent is connected to the inlet of the kettle.

[0013] The third aspect of this utility model discloses a vehicle including the aforementioned thermal management system.

[0014] The present invention has the following beneficial effects:

[0015] In this invention, since the inner diameter of the cavity of the gas-liquid separator gradually decreases from the exhaust port to the drain port, after water enters the gas-liquid separator, the water will flow towards the drain port at the bottom of the shell due to the influence of gravity. This will cause the air in the center of the cavity to be squeezed upward and quickly discharged towards the exhaust port at the top of the shell.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit the application. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. The drawings herein are for illustrating the inventive concept of this application and are not entirely equivalent to the structure of the actual product protected by this application.

[0018] Figure 1 A front view structural schematic diagram of the gas-liquid separation device in an embodiment of the present invention is shown.

[0019] Figure 2 A side view of the gas-liquid separation device in an embodiment of the present invention is shown.

[0020] Figure 3 A cross-sectional structural schematic diagram of the gas-liquid separation device in an embodiment of this utility model is shown.

[0021] Figure 4 A schematic diagram of the thermal management system in an embodiment of this utility model is shown.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Gas-liquid separator; 11. Shell; 101. Cavity; 111. Upper shell section; 112. Lower shell section; 101a. Exhaust port; 101b. Drain port; 13. Spiral structure; 101c. Water inlet; 14. Water inlet pipe; 15. Exhaust pipe; 16. Drain pipe; 21. Heater core; 22. Water heater; 23. First water pump; 31. Oil cooler; 32. Three-way valve; 33. Water reservoir; 34. Radiator; 35. Second water pump; 36. Engine water jacket; 37. Thermostat; 38. Turbocharger; 39. Exhaust gas recirculation cooler. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0025] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0027] Combination Figures 1 to 3 As shown, this embodiment provides a gas-liquid separation device 10, which includes a housing 11. The housing 11 has a cavity 101, and an exhaust port 101a and a drain port 101b communicating with the cavity 101. The exhaust port 101a is located at the top of the housing 11, and the drain port 101b is located at the bottom of the housing 11. The inner diameter of the cavity 101 gradually decreases from the exhaust port 101a to the drain port 101b.

[0028] In this invention, as the inner diameter of the cavity 101 gradually decreases from the exhaust port 101a to the drain port 101b, after water enters the gas-liquid separation device 10, the water will flow towards the drain port 101b at the bottom of the housing 11 due to the influence of gravity. This will cause the air in the center of the cavity 101 to be squeezed upward and quickly discharged towards the exhaust port 101a at the top of the housing 11.

[0029] In an exemplary embodiment of this application, combined with Figures 1 to 3 As shown, the shell 11 includes an upper shell section 111 and a lower shell section 112. The upper shell section 111 is provided with a water inlet 101c and an exhaust port 101a, and the drain port 101b is located in the lower shell section 112.

[0030] Furthermore, combined Figure 3 As shown, cavity 101 includes an upper cavity that is interconnected and located within upper shell section 111 and a lower cavity that is located within lower shell section 112; from the exhaust port 101a toward the drain port 101b: the inner diameter of the upper cavity is larger than the inner diameter of the lower cavity, and the inner diameter of the lower cavity gradually decreases.

[0031] It should be understood that by setting the inner diameter of the upper cavity to be larger than that of the lower cavity, and gradually reducing the inner diameter of the lower cavity, it is possible to satisfy the purpose of compressing the air upward in the center of cavity 101, while also ensuring that the space of the upper cavity is larger than that of the lower cavity, thus facilitating water intake and rapid exhaust.

[0032] For example, the upper cavity is cylindrical, and the lower cavity is frustum-shaped.

[0033] In an exemplary embodiment of this application, combined with Figure 3 As shown, the gas-liquid separation device 10 also includes a spiral structure 13, which is located inside the cavity 101 and connected to the housing 11. The spiral structure 13 facilitates the spiral movement of water and air inside, thereby accelerating exhaust and drainage.

[0034] In an exemplary embodiment of this application, the drain outlet 101b and the vent outlet 101a are coaxially arranged and both are located at the center of the cavity 101.

[0035] It should be understood that by setting the drain outlet 101b and the vent outlet 101a coaxially and corresponding to the center of the cavity 101, compared to setting the drain outlet 101b and the vent outlet 101a in other positions, the structural stability of the shell 11 is stronger, and the shortest drainage / venting path can be achieved, so that liquid can be quickly collected and discharged by gravity and gas can be quickly collected and discharged by lift, avoiding local water / gas accumulation.

[0036] In an exemplary embodiment of this application, combined with Figure 2 As shown, the inlet 101c is located on the side circumferential surface of the upper shell section 111, and the center of the inlet 101c is offset relative to the center of the cavity 101, that is, in the horizontal direction: the inlet 101c is eccentrically positioned relative to the center of the cavity 101.

[0037] It should be understood that, in combination Figure 2 and Figure 3 As shown, the inlet 101c is located on the side circumferential surface of the upper shell section 111, and the center of the inlet 101c is misaligned with the center of the cavity 101, which facilitates better spiral flow of water along the spiral structure 13, thereby accelerating exhaust and drainage.

[0038] In an exemplary embodiment of this application, combined with Figures 1 to 3 As shown, the gas-liquid separation device 10 also includes a water inlet pipe 14 connected to the water inlet 101c, an exhaust pipe 15 connected to the exhaust outlet 101a, and a drain pipe 16 connected to the drain outlet 101b.

[0039] In this invention, firstly, because the inner diameter of the cavity 101 of the gas-liquid separator 10 gradually decreases from the exhaust port 101a to the drain port 101b, after water enters the gas-liquid separator 10, the water flows towards the drain port 101b at the bottom of the housing 11 due to gravity. This causes the air in the center of the cavity 101 to be compressed upwards and quickly discharged towards the exhaust port 101a at the top of the housing 11. Next, by providing a spiral structure 13 inside the cavity 101 of the gas-liquid separator 10, water and air move in a spiral motion inside, thereby accelerating exhaust and drainage. Secondly, by setting the water inlet 101c of the gas-liquid separator 10 on the side circumferential surface of the upper shell section 111, and offsetting the center of the water inlet 101c relative to the center of the cavity 101 (i.e., in the horizontal direction, the water inlet 101c is offset from the center of the cavity 101 after being offset from the center of the device), it is beneficial for the water to flow more smoothly along the spiral structure 13, further accelerating the exhaust and drainage. Furthermore, since most of the water is discharged from the drain outlet 101b, the water flow from the exhaust outlet 101a decreases, reducing the amount of water entering the kettle 33 of the thermal management system, thereby reducing the energy loss of the thermal management system.

[0040] In summary, the gas-liquid separation device 10 of this application has higher exhaust efficiency and lower energy loss compared to gas-liquid separation devices 10 with other structures.

[0041] Combination Figure 4 As shown, this embodiment also provides a thermal management system, including the gas-liquid separation device 10 described above. The gas-liquid separation device 10 separates the water flowing into it into the gas-liquid system into gas and liquid phases.

[0042] In one exemplary embodiment, combining Figure 4 As shown, the thermal management system also includes a heater core 21. The inlet 101c of the gas-liquid separator 10 is connected to the outlet of the heater core 21, so that the water and air flowing out of the heater core 21 can be separated by the gas-liquid separator 10 and flow out from the exhaust port 101a and the drain port 101b of the gas-liquid separator 10, respectively, to reduce the air in the thermal management system.

[0043] In one exemplary embodiment, combining Figure 4 As shown, the thermal management system also includes an oil cooler 31, a water heater 22, and a three-way valve 32. The drain outlet 101b is connected to the inlet of the oil cooler 31 and the inlet of the water heater 22 through the three-way valve 32.

[0044] The opening and closing of the three-way valve 32 allows water flowing out of the drain outlet 101b to flow into both the oil cooler 31 and the water heater 22, or to flow separately into either the oil cooler 31 or the water heater 22.

[0045] In one exemplary embodiment, the thermal management system further includes a kettle 33, with an exhaust port 101a connected to the inlet of the kettle 33.

[0046] It should be understood that the function of the kettle 33 is to replenish water in the circulation pipeline of the thermal management system, or to discharge excess gas generated in the circulation pipeline, thereby achieving the depressurization function of the circulation pipeline. Therefore, when the exhaust port 101a is connected to the inlet of the kettle 33, the gas separated by the gas-liquid separator 10 can be discharged through the kettle 33.

[0047] In one exemplary embodiment, the thermal management system further includes a first water pump 23, and the first water pump 23, water heater 22, warm air core 21, water inlet 101c of gas-liquid separator 10 and water outlet 101b of gas-liquid separator 10 are connected in series through pipelines to form a circulation loop.

[0048] Furthermore, the thermal management system also includes a radiator 34, a second water pump 35, an engine water jacket 36, and a thermostat 37 connected in series via pipes. The water tank 33 connects the pipes between the radiator 34 and the second water pump 35.

[0049] Furthermore, the thermal management system also includes a turbocharger 38 and an exhaust gas recirculation cooler 39. The turbocharger 38 is connected to the engine water jacket 36 via a pipeline, and the exhaust gas recirculation cooler 39 is connected to the thermostat 37 via a pipeline.

[0050] For other structures of the thermal management system, please refer to existing technologies; they will not be elaborated here.

[0051] This embodiment also provides a vehicle including the thermal management system described above.

[0052] For other aspects of the vehicle's structure, please refer to existing technology; they will not be elaborated upon here.

[0053] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified. The terms "some embodiments," "exemplarily," 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 this application.

[0055] The illustrative expressions of the terms used above do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0056] Although embodiments of this application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of the patent coverage of this application.

Claims

1. A gas-liquid separation device, characterized by, The gas-liquid separation device comprises a shell provided with a cavity, an air outlet and a water outlet, the air outlet is arranged on the top of the shell, and the water outlet is arranged on the bottom of the shell. The inner diameter of the cavity gradually decreases from the air outlet to the water outlet.

2. The gas-liquid separation device of claim 1, wherein, The shell comprises an upper shell segment and a lower shell segment, the upper shell segment is provided with a water inlet and the air outlet, and the water outlet is arranged on the lower shell segment. The cavity comprises an upper cavity arranged in the upper shell segment and a lower cavity arranged in the lower shell segment. The inner diameter of the upper cavity is greater than that of the lower cavity, and the inner diameter of the lower cavity gradually decreases from the air outlet to the water outlet.

3. The gas-liquid separation device of claim 1, wherein, The gas-liquid separation device further comprises a spiral structure arranged in the cavity and connected with the shell.

4. The gas-liquid separation device of claim 1, wherein, The water outlet and the air outlet are coaxially arranged and correspond to the center of the cavity.

5. The gas-liquid separation device of claim 2, wherein, The water inlet is arranged on the side circumferential surface of the upper shell segment, and the center of the water inlet is staggered relative to the center of the cavity.

6. A thermal management system characterized by, The heat management system comprises the gas-liquid separation device.

7. The thermal management system of claim 6, wherein, The heat management system further comprises a water kettle, and the air outlet is connected with the inlet of the water kettle.

8. The thermal management system of claim 6, wherein, The heat management system further comprises an oil cooler, a water heater and a three-way valve, and the water outlet is connected with the inlet of the oil cooler and the inlet of the water heater through the three-way valve.

9. The thermal management system of claim 6, wherein, The heat management system further comprises a water kettle, and the air outlet is connected with the inlet of the water kettle.

10. A vehicle characterized by comprising: The heat management system comprises the gas-liquid separation device. The heat management system further comprises an oil cooler, a water heater and a three-way valve, and the water outlet is connected with the inlet of the oil cooler and the inlet of the water heater through the three-way valve.