Gas-liquid separation device and automobile cooling system

Abstract

The present application provides a gas-liquid separation device and an automobile cooling system. The gas-liquid separation device includes a housing, a gas-liquid separation unit, and a float. The housing is provided with a liquid inlet and a liquid outlet; a gas-liquid separation chamber, a float housing chamber, and an air storage chamber are provided within the housing; the air storage chamber is disposed at the top of the float housing chamber and communicates with the float housing chamber, and an exhaust duct is provided at the top of the air storage chamber; the gas-liquid separation chamber is disposed at the bottom of the float housing chamber and communicates with the float housing chamber, and the liquid inlet and liquid outlet are respectively communicated with the gas-liquid separation chamber. The gas-liquid separation unit is disposed within the gas-liquid separation chamber, and a gas-liquid mixture flowing into the gas-liquid separation chamber from the liquid inlet flows through the gas-liquid separation unit for gas-liquid separation. The separated liquid flows out of the housing through the liquid outlet, and the separated gas enters the float housing chamber. A first blocking portion is provided at the top of the float, and the float is disposed in the float housing chamber so as to be movable up and down. The automobile cooling system includes the gas-liquid separation device.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a gas-liquid separation device and an automobile cooling system. Background Art

[0002] Your car's cooling system dissipates heat from the car's engine into the air to prevent it from overheating. As the coolant in the cooling system flows through the hot engine, it absorbs heat, lowering the engine's temperature.

[0003] When a car leaves the factory, there is air mixed in the coolant in the car's cooling system. The air in the coolant affects the heat exchange efficiency of the cooling system. Summary of the Invention

[0004] The present application provides a gas-liquid separation device and an automobile cooling system.

[0005] One of the purposes of this application is to provide a gas-liquid separation device for an automobile cooling system, the gas-liquid separation device comprising:

[0006] A shell, the shell being provided with a liquid inlet and a liquid outlet; a gas-liquid separation chamber, a float accommodating chamber, and an air storage chamber being provided within the shell; the air storage chamber being provided at the top of the float accommodating chamber and communicating with the float accommodating chamber, and an exhaust passage being provided at the top of the air storage chamber; the gas-liquid separation chamber being provided at the bottom of the float accommodating chamber and communicating with the float accommodating chamber, and the liquid inlet and the liquid outlet being respectively communicated with the gas-liquid separation chamber;

[0007] a gas-liquid separation portion disposed in the gas-liquid separation chamber, wherein the gas-liquid mixture flowing into the gas-liquid separation chamber from the liquid inlet flows through the gas-liquid separation portion for gas-liquid separation, the separated liquid flows out of the housing through the liquid outlet, and the separated gas enters the float accommodating chamber;

[0008] A float, a first blocking portion is provided on the top of the float, and the float is movably arranged in the float accommodating chamber; the float is configured such that: after the liquid in the gas-liquid separation chamber enters the float accommodating chamber, the float floats up under the action of the buoyancy of the liquid, and the first blocking portion isolates the float accommodating chamber from the gas storage chamber; after the gas in the gas-liquid separation chamber enters the float accommodating chamber, the gas causes the liquid level of the float accommodating chamber to drop, the float drops, and the float accommodating chamber is connected to the gas storage chamber, so that the gas enters the gas storage chamber and is discharged through the exhaust duct.

[0009] Optionally, the gas-liquid separation portion includes an annular baffle, and the gas-liquid separation device further includes a first partition disposed between the gas-liquid separation chamber and the float accommodating chamber, the first partition being provided with a first through hole communicating with the gas-liquid separation chamber and the float accommodating chamber; the gas-liquid separation portion further includes an annular drainage channel located between the baffle and the inner wall of the housing, the annular baffle surrounding the first through hole;

[0010] The gas-liquid mixture entering the gas-liquid separation chamber from the liquid inlet forms a vortex after flowing through the drainage channel, so that the gas is separated from the gas-liquid mixture and flows into the float accommodating chamber through the first through hole.

[0011] Optionally, the gas-liquid separation device further includes a first partition plate disposed between the gas-liquid separation chamber and the float accommodating chamber, the first partition plate being provided with a first through hole connecting the gas-liquid separation chamber and the float accommodating chamber; the float accommodating chamber includes a first chamber and a second chamber located on top of the first chamber, the float being located in the second chamber, the gas-liquid separation device further includes a second partition plate located between the first chamber and the second chamber, the second partition plate being provided with a second through hole connecting the first chamber and the second chamber;

[0012] The orthographic projection of the second through hole on the first partition plate falls outside the first through hole.

[0013] Optionally, the gas-liquid separation device further includes a buffer structure arranged in the first through hole.

[0014] Optionally, the float accommodating chamber includes a first chamber and a second chamber located on top of the first chamber, the float is located in the second chamber, and the gas-liquid separation device further includes a second partition located between the first chamber and the second chamber, the second partition being provided with a second through hole connecting the first chamber and the second chamber;

[0015] The second partition plate extends toward the air storage chamber to form a first protrusion, and / or the float is provided with a second protrusion on a side facing the second partition plate.

[0016] Optionally, the float accommodating chamber includes a first chamber and a second chamber located on top of the first chamber, the float is located in the second chamber, the gas-liquid separation device further includes a second partition located between the first chamber and the second chamber and an annular retaining wall formed by an edge of the partition extending upward, the annular retaining wall surrounds the second chamber, the second partition is provided with a second through hole connecting the first chamber and the second chamber, and the gas-liquid separation device further includes a third partition disposed between the float accommodating chamber and the gas storage chamber, the third partition being provided with a third through hole connecting the float accommodating chamber and the gas storage chamber;

[0017] The annular retaining wall abuts against the third partition plate.

[0018] Optionally, the gas-liquid separation device further includes a first elastic member, the top end of the first elastic member abuts against the float, and the bottom end of the first elastic member is fixed.

[0019] Optionally, one of the inner wall of the float accommodating cavity and the outer wall of the float is provided with a groove, and the other is provided with a rib, the groove extends longitudinally, the rib is clamped in the groove, and can move in the groove along the extension direction of the groove.

[0020] Optionally, the gas-liquid separation device further includes a pressure relief valve disposed in the exhaust duct, and the pressure relief valve is configured to open when the gas pressure in the gas storage chamber is greater than a threshold value, and to close when the gas pressure in the gas storage chamber is less than or equal to the threshold value.

[0021] Optionally, the pressure relief valve includes a second sealing portion, a second elastic member and an exhaust hole, the exhaust hole being connected to the exhaust duct and the air storage chamber respectively, the exhaust hole being arranged at one end of the second sealing portion facing the air storage chamber, and the second sealing portion being arranged at one end of the second elastic member facing the air storage chamber; when the gas pressure in the air storage chamber is less than or equal to the threshold value, the second elastic member stretches, and the second sealing portion blocks the exhaust hole; when the gas pressure in the air storage chamber is greater than the threshold value, the gas in the air storage chamber pushes the second sealing portion, compresses the elastic member, and the exhaust hole opens.

[0022] Optionally, the gas-liquid separation device further includes a third partition plate arranged between the float accommodating chamber and the air storage chamber, the third partition plate being provided with a third through hole connecting the float accommodating chamber and the air storage chamber; the side of the third partition plate facing the float accommodating chamber protrudes toward the air storage chamber.

[0023] Optionally, the gas-liquid separation device also includes a third partition plate arranged between the float accommodating chamber and the air storage chamber, and the third partition plate is provided with a third through hole connecting the float accommodating chamber and the air storage chamber; the third partition plate is provided with a guide portion on the side facing the air storage chamber, and the guide portion extends obliquely downward from a direction away from the third through hole to a direction close to the third through hole.

[0024] A second object of the present application is to provide an automobile cooling system, which includes the above-mentioned gas-liquid separation device.

[0025] The gas-liquid separation device provided in the embodiment of the present application includes a shell, and the gas-liquid mixture flows into the gas-liquid separation chamber through the liquid inlet. After the gas-liquid mixture flows through the gas-liquid separation part, the gas in the gas-liquid mixture is separated, and the liquid flowing through the gas-liquid separation part flows out of the gas-liquid separation device through the liquid outlet. The separated gas enters the float accommodating chamber, then enters the gas storage chamber through the float accommodating chamber, and is finally discharged through the exhaust duct at the top of the gas storage chamber; when the flow rate of the gas-liquid mixture in the cooling pipe is too fast, part of the gas-liquid mixture will flow into the float accommodating chamber, and the gas-liquid mixture in the float accommodating chamber will gradually increase. The float floats up under the action of the buoyancy of the gas-liquid mixture, and finally the float isolates the float accommodating chamber from the gas storage chamber, preventing the gas-liquid mixture from entering the gas storage chamber and being discharged through the exhaust duct, thereby avoiding waste of the gas-liquid mixture. As the amount of separated gas increases, the gas pressure within the float chamber gradually increases. The gas squeezes the gas-liquid mixture in the float chamber back into the gas-liquid separation chamber, causing the gas-liquid mixture level in the float chamber to drop. The float then descends, connecting the float chamber to the gas storage chamber. The gas in the float chamber enters the gas storage chamber and is ultimately discharged through the exhaust duct. The gas-liquid separation device provided in the embodiments of the present application can separate gas from the gas-liquid mixture while preventing coolant in the cooling system from flowing out of the gas-liquid separation device. When used in an automotive cooling system, the gas-liquid separation device can reduce the amount of gas entering the expansion tank, preventing the gas entering the expansion tank from pushing the liquid level down, which could trigger an alarm due to the low liquid level in the expansion tank.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the description, are used to explain the principles of the present application.

[0028] Figure 1 A cross-sectional view of a gas-liquid separation device provided in one embodiment of the present application.

[0029] Figure 2 A partial cross-sectional view of an air separation device provided in one embodiment of the present application.

[0030] Figure 3 A partial cross-sectional view of an air separation device provided in another embodiment of the present application.

[0031] Figure 4 A schematic diagram of the partial structure of an air separation device provided in one embodiment of the present application.

[0032] Figure 5 This is another partial structural schematic diagram of an air separation device provided in one embodiment of the present application.

[0033] Figure 6 A top view of a second partition of an air separation device provided in one embodiment of the present application.

[0034] Figure 7 for Figure 6 A schematic structural diagram of a second partition of an air separation device is provided, taken along section line DD.

[0035] Figure 8 This is another partial structural schematic diagram of an air separation device provided in one embodiment of the present application.

[0036] Figure 9 A schematic diagram of a float of an air separation device provided in one embodiment of the present application.

[0037] Figure 10 for Figure 9 A schematic structural diagram of a float of an air separation device is provided, taken along section line EE.

[0038] Figure 11 A schematic diagram of a float of an air separation device provided in another embodiment of the present application. DETAILED DESCRIPTION

[0039] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0040] The terms used in this application are for the purpose of describing particular embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0041] It should be understood that the words “first”, “second” and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as “a” or “an” do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise indicated, words such as “front”, “rear”, “lower” and / or “upper” are for ease of description only and are not limited to one position or one spatial orientation. Words such as “include” or “comprising” mean that the elements or objects appearing before “include” or “comprising” cover the elements or objects listed after “include” or “comprising” and their equivalents, and do not exclude other elements or objects.

[0042] The gas-liquid separation device and the automobile cooling system provided by the embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can complement or be combined with each other.

[0043] An embodiment of the present application provides an automobile cooling system, which includes a gas-liquid separation device, a cooling pipe, a heat exchanger, a water pump, and an expansion water tank. The heat exchanger, water pump, gas-liquid separation device, and expansion water tank are connected through the cooling pipe to form a circuit for circulating coolant. The gas-liquid separation device includes a liquid inlet and a liquid outlet. The coolant in the heat exchanger and expansion water tank flows into the gas-liquid separation device through the liquid inlet of the gas-liquid separation device after passing through the water pump, and then flows out through the liquid outlet of the gas-liquid separation device. Finally, the coolant flows back to the heat exchanger and the expansion water tank. When the gas-liquid mixture in the cooling pipe (including the coolant and the gas in the coolant) flows through the gas-liquid separation device, the gas in the gas-liquid mixture is separated and discharged, and the coolant flows out through the liquid outlet of the gas-liquid separation device and circulates in the cooling system.

[0044] See also Figure 1 The gas-liquid separation device 100 of the automobile cooling system provided in an embodiment of the present application includes a housing 10 , a gas-liquid separation portion 21 and a float 31 .

[0045] The shell 10 is provided with a liquid inlet 101 and a liquid outlet 102; a gas-liquid separation chamber 20, a float accommodating chamber 30 and an air storage chamber 40 are provided in the shell 10; the air storage chamber 40 is arranged at the top of the float accommodating chamber 30 and is communicated with the float accommodating chamber 30, and an exhaust passage 41 is provided at the top of the air storage chamber 40; the gas-liquid separation chamber 20 is arranged at the bottom of the float accommodating chamber 30 and is communicated with the float accommodating chamber 30, and the liquid inlet 101 and the liquid outlet 102 are respectively communicated with the gas-liquid separation chamber 20.

[0046] The gas-liquid separation portion 21 is disposed within the gas-liquid separation chamber 20 . The gas-liquid mixture flowing into the gas-liquid separation chamber 20 through the liquid inlet 101 flows through the gas-liquid separation portion 21 for gas-liquid separation. The separated liquid flows out of the housing 10 through the liquid outlet 102 , and the separated gas enters the float accommodating chamber 30 .

[0047] A first sealing portion 311 is provided at the top of the float 31. The float 31 is disposed in the float accommodating chamber 30 so as to be movable up and down. The float 31 is configured such that: after the liquid in the gas-liquid separation chamber 20 enters the float accommodating chamber 30, the float 31 floats upward due to the buoyancy of the liquid, and the first sealing portion 311 isolates the float accommodating chamber 30 from the gas storage chamber 40. After the gas in the gas-liquid separation chamber 20 enters the float accommodating chamber 30, the gas causes the liquid level in the float accommodating chamber 30 to drop, causing the float 31 to descend, and the float accommodating chamber 30 to communicate with the gas storage chamber 40, allowing the gas to enter the gas storage chamber 40 and be discharged through the exhaust passage 41.

[0048] The gas-liquid separation device provided in the embodiment of the present application includes a shell 10, and a gas-liquid mixture flows into the gas-liquid separation chamber 20 through the liquid inlet 101. After the gas-liquid mixture flows through the gas-liquid separation part 21, the gas in the gas-liquid mixture is separated, and the liquid flowing through the gas-liquid separation part 21 flows out of the gas-liquid separation device 100 through the liquid outlet 102. The separated gas enters the float accommodating chamber 30, and then enters the gas storage chamber 40 through the float accommodating chamber 30, and is finally discharged through the exhaust duct 41 at the top of the gas storage chamber 40; when the flow rate of the gas-liquid mixture in the cooling pipe is too fast, part of the gas-liquid mixture will flow into the float accommodating chamber 30, and the gas-liquid mixture in the float accommodating chamber 30 will gradually increase. The float 31 floats up under the action of the buoyancy of the gas-liquid mixture, and finally the float 31 isolates the float accommodating chamber 30 from the gas storage chamber 40, preventing the gas-liquid mixture from entering the gas storage chamber 40 and being discharged through the exhaust duct 41, thereby avoiding waste of the gas-liquid mixture. As the amount of separated gas increases, the gas pressure in the float-holding chamber 30 gradually increases, and the gas squeezes the gas-liquid mixture in the float-holding chamber 30 back into the gas-liquid separation chamber 20, causing the liquid level of the gas-liquid mixture in the float-holding chamber 30 to drop. The float 31 then drops, and the float-holding chamber 30 communicates with the gas storage chamber 40. The gas in the float-holding chamber enters the gas storage chamber 40 and is eventually discharged through the exhaust duct 41. The gas-liquid separation device 100 provided in the embodiment of the present application can separate the gas in the gas-liquid mixture while preventing the coolant in the cooling system from flowing out of the gas-liquid separation device. When the gas-liquid separation device is used in an automobile cooling system, it can reduce the amount of gas entering the expansion tank, preventing the gas entering the expansion tank from pushing the liquid level in the expansion tank down, which would cause the expansion tank liquid level to be too low and trigger an alarm.

[0049] In one embodiment, see Figure 2 The housing 10 may include a first housing 103, a second housing 104, and a third housing 105. The first housing 103 is provided with a gas-liquid separation chamber 20, the second housing 104 is provided with a float receiving chamber 30, and the third housing 105 is provided with a gas storage chamber 40. When assembling the gas-liquid separation device, the gas-liquid separation portion 21 is first placed in the gas-liquid separation chamber 20, and the float 31 is placed in the float receiving chamber 30. Subsequently, the bottom of the second housing 104 is connected to the first housing 103, and the top of the second housing 104 is connected to the third housing 105, thereby completing the assembly of the gas-liquid separation device 100. By configuring the housing 10 to include the first housing 103, the second housing 104, and the third housing 105, the assembly of the gas-liquid separation device 100 can be facilitated. In some embodiments, the first housing 103, the second housing 104, and the third housing 105 can be connected by welding or in a detachable manner.

[0050] In one embodiment, the material of the housing 10 may be an engineering plastic. For example, the housing 10 may be a mixture of PA6 (Polyamide-6) and GF (Glass Fiber), where the mass fraction of the glass fiber may be 30%. Using this material can provide the housing 10 with good rigidity and strength while having a low density, thereby reducing the weight of the housing 10. In other embodiments, the housing 10 may also be made of other materials such as metal.

[0051] In one embodiment, the top of the third housing 105 extends upward to form an exhaust portion 43, and an exhaust duct 41 is provided in the exhaust portion 43. The exhaust duct 41 connects the air storage chamber 40 with the outside. In some embodiments, the exhaust duct 41 can also be directly opened on the top of the third housing 105.

[0052] In one embodiment, the liquid inlet 101 and the liquid outlet 102 are provided on the side wall of the first shell 103. The liquid inlet 101 and the liquid outlet 102 are respectively connected to the gas-liquid separation chamber 20. The position of the liquid inlet 101 is at least not lower than the position of the liquid outlet 102. The gas-liquid mixture flowing in through the liquid inlet 101 flows through the gas-liquid separation portion 21 and is discharged from the gas-liquid separation device 100 through the liquid outlet 102. In some embodiments, the shell extends outward at the liquid inlet 101 to form a liquid inlet joint 106, and extends outward at the liquid outlet 102 to form a liquid outlet joint 107. The liquid inlet joint 106 and the liquid outlet joint 107 facilitate the connection of the gas-liquid separation device to the cooling pipe.

[0053] In one embodiment, the liquid inlet 101 is provided at one end of the first shell 103 close to the float accommodating chamber 30 , and the liquid outlet 102 is provided at one end of the first shell 103 away from the float accommodating chamber 30 .

[0054] In one embodiment, the bottom wall of the housing 10 protrudes toward the gas-liquid separation chamber 20 to form a rectifying structure 108. This rectifying structure 108 is truncated cone-shaped, meaning that the cross-sectional area of ​​the rectifying structure at the end closest to the float-accommodating chamber is smaller than the cross-sectional area of ​​the end facing away from the float-accommodating chamber. By providing rectifying structure 108, the gas-liquid mixture, before exiting the gas-liquid separation device, is blocked by the rectifying structure and impacts the rectifying structure, causing its flow direction to change and its flow rate to decrease. This reduces the flow resistance of the gas-liquid mixture as it exits the liquid outlet 102, thereby facilitating its exit from the gas-liquid separation device through the liquid outlet 102.

[0055] In one embodiment, the total height of the shell 10 in the vertical direction ranges from 125 mm to 135 mm. For example, the total height of the shell 10 in the vertical direction can be 125 mm, 128 mm, 130 mm, 133 mm, 135 mm, etc. The total height of the shell 10 mentioned here refers to the height from the bottom outer wall of the shell 10 to the top outer wall of the shell. If the top of the shell 10 extends upward to form an exhaust portion 43, the height of the extended exhaust portion 43 is also included in the total height. This arrangement can ensure that the gas-liquid separation device 100 is adapted to the internal space of the automobile cooling system in the vertical direction, which facilitates the installation of the gas-liquid separation device.

[0056] In one embodiment, the cross-section of the housing 10 is generally circular at all locations, with a maximum outer diameter ranging from 78 mm to 82 mm. For example, the maximum outer diameter of the housing 10 in the vertical direction may be 78 mm, 80 mm, or 82 mm. The maximum outer diameter of the housing 10 in the vertical direction refers to the maximum outer diameter of the portion of the gas-liquid separation device 100 excluding the liquid inlet connector 106 and the liquid outlet connector 107. This configuration reduces the space occupied by the gas-liquid separation device, saving space within the vehicle interior.

[0057] In one embodiment, the wall thickness of the housing 10 ranges from 1.5 mm to 2.5 mm. For example, the wall thickness of the housing 10 can be 1.5 mm, 2 mm, or 2.5 mm. This configuration ensures that the housing has sufficient rigidity while not occupying too much space within the gas-liquid separation device.

[0058] Furthermore, the diameter of the liquid inlet 101 and the liquid outlet 102 ranges from 23 mm to 27 mm. For example, the outer diameters of the liquid inlet 101 and the liquid outlet 102 may be 23 mm, 25 mm, 27 mm, etc.

[0059] In one embodiment, see Figure 2 and Figure 4 The gas-liquid separation device further includes a first partition plate 50 disposed between the gas-liquid separation chamber 20 and the float accommodating chamber 30, the first partition plate 50 being provided with a first through hole 51 connecting the gas-liquid separation chamber 20 and the float accommodating chamber 30; the gas-liquid separation portion 21 includes an annular baffle plate 211, the gas-liquid separation portion 21 further includes an annular drainage channel 212 located between the annular baffle plate 211 and the inner wall of the shell 10, the annular baffle plate 211 surrounds the first through hole 51, and the drainage channel 212 is connected to the liquid inlet 101.

[0060] Since the drainage channel 212 formed by the annular baffle 211 and the inner wall of the shell 10 is annular, the gas-liquid mixture entering the annular drainage channel 212 through the liquid inlet 101 will form a vortex. Under the centrifugal effect, the gas-liquid mixture entering the gas-liquid separation chamber 20 rotates and flows downward close to the inner wall of the shell 10, while the gas in the gas-liquid mixture is almost not affected by the centrifugal effect. Therefore, the gas in the gas-liquid mixture does not adhere to the inner wall of the shell 10, but is located at the center of the liquid flow, thereby achieving the separation of the gas in the gas-liquid mixture; the separated gas enters the float accommodating chamber 30 through the first through hole 51, and then enters the gas storage chamber 40 and is discharged from the gas-liquid separation device; the liquid flows downward to the liquid outlet and is discharged from the shell through the liquid outlet.

[0061] In one embodiment, the first partition plate further includes an annular extension portion 52 extending downward, and the annular extension portion 52 surrounds the first through hole 51 located in the center area of ​​the first partition plate 50 .

[0062] In one embodiment, see Figure 2 The gas-liquid separation chamber 20 may be truncated cone-shaped, with the cross-sectional area of ​​the end surface of the gas-liquid separation chamber 20 near the float accommodating chamber 30 being larger than the cross-sectional area of ​​the end surface of the gas-liquid separation chamber 20 facing away from the float accommodating chamber 30. This configuration facilitates the centrifugal effect of the gas-liquid mixture to rotate downward, facilitating the separated gas to converge toward the center of the gas-liquid separation chamber 20.

[0063] In one embodiment, see Figure 2 and Figure 5The number of the first through holes 51 can be multiple, and such a configuration is more conducive to gas entering the float accommodating chamber 30 through the first through holes 51. When the number of the first through holes is multiple, each first through hole 51 is surrounded by an annular baffle 211.

[0064] In one embodiment, see Figure 3 The gas-liquid separation device further includes a buffer structure 511 disposed within the first through hole 51. The buffer structure 511 partially blocks the first through hole 51. By providing the buffer structure 511, when the gas-liquid mixture rushes into the float accommodating chamber 30 through the first through hole 51, or when the gas-liquid mixture flows out of the float accommodating chamber 30 through the first through hole 51, the gas-liquid mixture is blocked by the buffer structure 511, and its flow rate is reduced, thereby slowing down the rate at which the liquid level in the float accommodating chamber 30 rises or falls, thereby reducing the agitation of the float 31 caused by the rapid change in the liquid level.

[0065] Furthermore, the buffer structure 511 can move up and down within the first through hole 51. The buffer structure 511 can be a solid or hollow sphere. The aperture of the end of the first through hole 51 facing the gas-liquid separation chamber 20 is smaller than the diameter of the sphere, and the aperture of the end of the first through hole 51 facing the float accommodating chamber 30 is larger than the diameter of the sphere. The gas-liquid mixture impacts the buffer structure 511, causing the buffer structure 511 to move away from the gas-liquid separation chamber 20, thereby allowing the gas-liquid mixture to pass through the gap between the buffer structure 511 and the wall of the first through hole 51 and enter the float accommodating chamber 30. This arrangement can maintain the sphere within the first through hole 51 while preventing the sphere from completely blocking the first through hole 51. In other embodiments, the buffer structure 511 can also be a structure of other shapes, for example, a columnar structure.

[0066] In one embodiment, the material of the buffer structure 511 may be engineering plastics. For example, the material of the buffer structure 511 may be a mixture of PA6 (Polyamide-6) and GF (Glass Fiber), wherein the mass fraction of the glass fiber may be 30%. In other embodiments, the material of the buffer structure 511 may also be other lightweight materials.

[0067] In one embodiment, see Figure 1 、 Figure 6 and Figure 7The float accommodating chamber 30 includes a first chamber 32 and a second chamber 33 located on top of the first chamber 32. The float 31 is located in the second chamber 33. The gas-liquid separation device 100 also includes a second partition 60 located between the first chamber 32 and the second chamber 33. The second partition 60 is provided with a second through hole 61 connecting the first chamber 32 and the second chamber 33. The orthographic projection of the second through hole 61 on the first partition 50 falls outside the first through hole 51. When the flow rate of the gas-liquid mixture in the cooling pipe is relatively fast, part of the gas-liquid mixture will enter the float accommodating chamber 30 through the first through hole 51. Since the orthographic projection of the second through hole 61 on the first partition 50 falls outside the first through hole 51, when the gas-liquid mixture rushes into the float accommodating chamber 30 through the first through hole 51, the gas-liquid mixture flows into the first chamber through the first through hole 51 and is blocked by the second partition 60, so that the flow direction of the gas-liquid mixture is changed and the flow rate is reduced, so that the flow rate of the gas-liquid mixture is relatively low when it enters the second chamber through the second through hole. This avoids the gas-liquid mixture from flowing too fast, which would cause the gas-liquid mixture to have a large impact on the float 31 when entering the second chamber, causing the float 31 to swing up and down. This can prevent the float 31 from deviating and causing the first blocking portion 311 to fail to properly block the air storage chamber 40, thereby affecting the isolation effect between the float accommodating chamber 30 and the air storage chamber 40.

[0068] Furthermore, the plurality of first through holes 51 are arranged at intervals along the circumference, and the plurality of second through holes 61 are arranged at intervals along the circumference. The center of the circle containing the plurality of first through holes 51 substantially coincides with the center of the circle containing the plurality of second through holes 61, and the radius of the circle containing the plurality of first through holes 51 is smaller than the radius of the circle containing the plurality of second through holes 61. In the illustrated embodiment, the plurality of first through holes 51 are distributed on a plurality of circumferences, and the plurality of circumferences containing the plurality of first through holes 51 are all located within the circumference of the circle containing the plurality of second through holes 61.

[0069] In one embodiment, the second partition 60 extends toward the second chamber 33 to form a boss 603 .

[0070] In one embodiment, a filter material is provided between the first partition plate 50 and the second partition plate 60 . The gap in the filter material can accommodate gas in the gas-liquid mixture to prevent the gas from being carried back to the gas-liquid separation chamber 20 due to the drop in the liquid level of the gas-liquid mixture in the float accommodating chamber 30 .

[0071] In one embodiment, see Figure 1The gas-liquid separation device further includes a third partition plate 70 disposed between the float accommodating chamber 30 and the air storage chamber 40. The third partition plate 70 defines a third through hole 71 connecting the float accommodating chamber 30 and the air storage chamber 40. The side of the third partition plate 70 facing the float accommodating chamber 30 protrudes toward the air storage chamber 40. As the gas-liquid mixture flows into the float accommodating chamber 30, the float 31 rises due to buoyancy. When the float 31 abuts the third partition plate 70, the first blocking portion 311 blocks the third through hole 71. Such an arrangement can avoid the situation where, when the float 31 rises to the point where it contacts the second partition 60, the top wall of the float 31 and the third partition 70 have a large contact area, and the liquid occupies the gap between the top wall of the float 31 and the second partition 60, causing the pressure between the third partition 70 and the top wall of the float to be less than the atmospheric pressure, so that the float 31 and the third partition 70 stick together. This can ensure that when the liquid level in the float accommodating chamber drops, the float moves downward with the liquid level, thereby opening the third through hole 71.

[0072] In one embodiment, see Figure 1 and Figure 8 A flow guide 72 is provided on the side of the third partition plate 70 facing the air storage chamber 40. The flow guide 72 extends obliquely downward from a direction away from the third through hole 71 to a direction closer to the third through hole 71. When the gas-liquid mixture flows rapidly, some of the gas-liquid mixture in the float accommodating chamber 30 may flow into the air storage chamber 40 through the third through hole 71. The flow guide 72 facilitates the return of the gas-liquid mixture from the air storage chamber 40 to the float accommodating chamber 30.

[0073] In one embodiment, the gas-liquid separation device further includes a first elastic member 80, the top end of which abuts against the float 31, and the bottom end of which is fixed. Before the gas-liquid mixture enters the float accommodating chamber 30, the gravity acting on the float 31 is greater than the elastic force exerted by the first elastic member 80 on the float 31, the first elastic member 80 is compressed, and the float 31 remains stationary in the float accommodating chamber 30. After the gas-liquid mixture enters the float accommodating chamber 30, the float 31 is subjected to the buoyancy exerted by the gas-liquid mixture and the elastic force exerted by the first elastic member 80. When the sum of the buoyancy and elastic force exerted on the float 31 is greater than the gravity of the float 31, the float 31 floats upward. The provision of the first elastic member 80 further facilitates the floating of the float 31. The first elastic member 80 may be a spring.

[0074] In one embodiment, see Figure 9 and Figure 10The float 31 includes a main body 36, with a first sealing portion 311 located at the top of the main body 36. The main body 36 includes an end cap 312 and a bottom plate 313. The end cap 312 can be integrally connected to the bottom plate 313 via friction welding. A cavity is defined between the end cap 312 and the bottom plate 313, sealing the interior of the float 31. This configuration reduces the weight of the float 31 and facilitates its buoyancy.

[0075] Furthermore, the float 31 further includes a mounting groove 315 , and the first blocking portion 311 is disposed in the mounting groove 315 .

[0076] Furthermore, the bottom plate 313 is provided with a recess 314 , the top end of the first elastic member 80 is disposed in the recess 314 , and the bottom end of the first elastic member 80 is sleeved on the boss 603 .

[0077] Further, see Figure 1 、 Figure 9 and Figure 10 The first sealing portion 311 is disposed on the top of the end cap 312. The first sealing portion 311 is vertically opposed to the third through hole 71. When the gas-liquid mixture flows into the float accommodating chamber 30 and the float 31 floats up, and the float 31 abuts against the third partition 70, the first sealing portion at least partially enters the third through hole to seal the third through hole. The end surface of the first sealing portion 311 facing the gas storage chamber 40 can be a hemispherical surface. For example, the shape of the first sealing portion 311 can be spherical or mushroom-shaped. With the gas-liquid mixture disposed in this manner, even if the float 31 is impacted by the gas-liquid mixture or tilted by the movement of the vehicle, the first sealing portion 311 can still achieve a good seal on the third through hole 71 because the end surface of the first sealing portion 311 that blocks the third through hole 71 is a hemispherical surface.

[0078] In one embodiment, see Figure 11 The first blocking portion 311 can be integrally formed with the main body 36. This can simplify the structure of the float 31 and the manufacturing process of the float 31.

[0079] In one embodiment, the main body 36 of the float 31 may be made of an engineering plastic with low water absorption, such as PPS (Polyphenylene sulfide). Using this material, the float 31 has both low water absorption and high mechanical strength.

[0080] In one embodiment, the first sealing portion 311 may be made of EPDM (Ethylene Propylene Diene Monomer). EPDM has excellent aging resistance and superheated water resistance. Using EPDM prevents the first sealing portion from aging or failure due to high temperatures of the gas-liquid mixture, thereby achieving good sealing performance.

[0081] In one embodiment, see Figure 1 、 Figure 6 and Figure 7 The float accommodating chamber 30 includes a first chamber 32 and a second chamber 33 located on top of the first chamber 32. The float 31 is located within the second chamber 33. The gas-liquid separation device 100 also includes a second partition 60 located between the first chamber 32 and the second chamber 33. The second partition 60 is provided with a second through hole 61 connecting the first chamber 32 and the second chamber 33. The second partition 60 extends toward the gas storage chamber 40 to form a first protrusion 601, and / or the float 31 is provided with a second protrusion on a side facing the second partition 60. When the bottom wall of the float 31 abuts the second partition 60, if the contact area between the bottom of the float 31 and the second partition 60 is large, the liquid between the bottom wall of the float and the second partition 60 will squeeze out the gas between the float 31 and the second partition 60. As a result, the pressure between the float 31 and the second partition 60 is much lower than atmospheric pressure, making it difficult for the float and the second partition to separate. The provision of the first protrusion 601 and / or the second protrusion can reduce the contact area between the float 31 and the second partition 60, preventing the bottom of the float 31 from sticking to the second partition 60 and facilitating the float 31's upward buoyancy due to the buoyancy of the gas-liquid mixture. In the illustrated embodiment, the second partition 60 extends toward the air storage chamber 40 to form the first protrusion 601, while the float 31 is not provided with the second protrusion.

[0082] In one embodiment, the gas-liquid separation device 100 further includes an annular retaining wall 602 extending upward from the edge of the second baffle 60, surrounding the second chamber 33. The annular retaining wall 602 abuts against the third baffle 70. With this arrangement, if the flow rate of the gas-liquid mixture suddenly increases, causing an increase in the amount of gas-liquid mixture in the first chamber 32, some of the gas-liquid mixture may enter the space between the annular retaining wall 602 and the housing. The abutment between the annular baffle and the third baffle prevents the gas-liquid mixture from entering the space above the float in the float accommodating chamber 30 and from rushing into the gas storage chamber 40.

[0083] Further, see Figure 1The third partition 70 extends downward toward one side of the float accommodating chamber 30 to form an annular shielding portion 701 , with a gap being provided between the shielding portion 701 and the inner wall of the housing 10 . The annular retaining wall 602 abuts against the shielding portion 701 .

[0084] Furthermore, the inner side of the bottom end of the shielding portion 701 is configured as a sloped surface, extending outwardly and slantingly away from the air storage chamber. The end of the annular retaining wall 602 facing the air storage chamber 40 is retained within the sloped surface. This arrangement allows the annular retaining wall 602 to be more securely positioned within the float housing chamber, preventing it from shifting due to the impact of the gas-liquid mixture. It also prevents the gas-liquid mixture from directly flowing from the first chamber 32 to the top of the float 31 and into the air storage chamber 40.

[0085] In one embodiment, Figure 7 As shown, the second partition 60 extends downward toward one side of the gas-liquid separation chamber 20 to form a buckle 604, and the buckle 604 passes through the first through hole 51 and is clamped on the side of the first partition 50 facing the gas-liquid separation chamber 20. The provision of the buckle 604 can limit the vertical movement of the second partition 60, so that the second partition 60 and the annular retaining wall 602 remain stable under the impact of the gas-liquid mixture. When the first partition 50 is provided with an annular extension 52 extending downward, the bottom end of the buckle 604 is clamped on one end of the extension 52 facing the gas-liquid separation chamber 20. In other embodiments, such as Figure 3 As shown, the second partition 60 extends downward toward one side of the gas-liquid separation chamber 20 to form a fourth protrusion 606, and the fourth protrusion 606 extends into the first through hole 51. There is an interference fit between the fourth protrusion 606 and the first through hole 51, so that the fourth protrusion 606 is stuck in the first through hole 51, thereby limiting the vertical movement of the second partition 60.

[0086] In one embodiment, see Figure 1 、 Figure 5 and Figure 6 The first baffle 50 extends toward the float accommodating chamber 30 to form a third protrusion 501. A retaining groove 605 is provided on the side of the second baffle 60 facing the gas-liquid separation chamber, and the third protrusion 501 is retained within the retaining groove 605. This arrangement allows the third protrusion 501 to support the second baffle 60 and also restricts circumferential movement of the second baffle 60, thereby improving the stability of the internal structure of the gas-liquid separation device.

[0087] Furthermore, there are multiple third protrusions 501 , and the locking slots 605 and the third protrusions 501 may correspond one to one, and the third protrusions 501 are locked in the corresponding locking slots 605 .

[0088] In one embodiment, see Figure 6 and Figure 9 One of the wall of the float accommodating chamber 30 and the outer wall of the float 31 is provided with a groove 34, and the other is provided with a rib 35. The groove 34 extends longitudinally, and the rib 35 is retained within the groove 34 and is movable within the groove 34 along the direction in which the groove 34 extends. This arrangement prevents the float 31 from deflecting or tilting during ascent and descent, while also limiting circumferential movement of the float 31, thereby ensuring smooth up and down movement of the float 31.

[0089] Furthermore, when the gas-liquid separation device includes an annular retaining wall 602 formed by extending upward from the edge of the second partition 60 , one of the inner surface of the annular retaining wall 602 and the outer wall of the float 31 is provided with a groove 34 , and the other is provided with a rib 35 . Figure 6 and Figure 8 In the illustrated embodiment, the groove 34 is provided on the inner surface of the annular retaining wall 602, and the rib 35 is provided on the outer wall of the float 31. In other embodiments, when the gas-liquid separation device is not provided with the annular retaining wall 602, one of the inner wall of the housing 10 and the outer wall of the float 31 may be provided with the groove 34, and the other may be provided with the rib 35.

[0090] In one embodiment, see Figure 1 , the gas-liquid separation device also includes a pressure relief valve 42 arranged in the exhaust duct 41, and the pressure relief valve 42 is configured to open when the gas pressure in the gas storage chamber 40 is greater than the threshold value, and close when the gas pressure in the gas storage chamber 40 is less than or equal to the threshold value. When the gas pressure in the gas storage chamber 40 is greater than the threshold value, the pressure relief valve 42 opens, and the gas is first discharged through the exhaust duct. As the gas is discharged, when the gas pressure in the gas storage chamber 40 is less than the threshold value, the pressure relief valve 42 closes. Even if a small amount of coolant enters the gas storage chamber 40, due to the low pressure in the gas storage chamber, the pressure relief valve 42 is closed, and the liquid entering the gas storage chamber 40 cannot be discharged through the exhaust duct. It can be seen that the provision of the pressure relief valve 42 can prevent the coolant entering the gas storage chamber 40 from being discharged from the gas-liquid separation device through the exhaust duct 41.

[0091] In one embodiment, the pressure relief valve 42 includes a second blocking portion 421, a second elastic member 422 and an exhaust hole 423, the exhaust hole 423 is respectively connected to the exhaust duct 41 and the air storage chamber 40, the exhaust hole 423 is arranged at one end of the second blocking portion 421 facing the air storage chamber 40, and the second blocking portion 421 is arranged at one end of the second elastic member 422 facing the air storage chamber 40; when the gas pressure in the air storage chamber 40 is less than or equal to the threshold value, the second elastic member 422 stretches, and the second blocking portion 421 blocks the exhaust hole 423; when the gas pressure in the air storage chamber 40 is greater than the threshold value, the gas in the air storage chamber 40 pushes the second blocking portion 421, compresses the second elastic member 422, and the exhaust hole 423 opens.

[0092] The process of achieving gas-liquid separation by the gas-liquid separation device provided in the embodiment of the present application is as follows:

[0093] A gas-liquid mixture of coolant and gas enters the gas-liquid separation device 100 through the liquid inlet 101. After the gas-liquid mixture enters the drainage channel 212, the annular baffle 211 changes its flow direction. Under the centrifugal force, the gas-liquid mixture rotates downward against the inner wall of the gas-liquid separation chamber 20 and flows out through the liquid outlet 102. The gas in the gas-liquid mixture is almost unaffected by the centrifugal force and is separated from the gas-liquid mixture. The separated air enters the float accommodating chamber 30 through the first through hole 51 defined in the first partition 50. At this time, a large amount of gas is separated from the gas-liquid mixture, and the gas-liquid mixture does not enter the float accommodating chamber 30. The second through hole 61 is open, and the separated gas enters the gas storage chamber 40 through the second through hole. As the gas in the gas storage chamber 40 increases, the pressure in the gas storage chamber 40 increases. When the gas pressure exceeds a preset threshold value of the pressure relief valve 42, the pressure relief valve 42 opens, and the gas is discharged from the gas-liquid separation device 100 through the exhaust channel 41.

[0094] As the amount of discharged gas increases, the amount of gas in the gas-liquid mixture decreases, and the amount of gas separated from the gas-liquid mixture decreases. The liquid level in the gas-liquid separation chamber 20 rises, and the gas-liquid mixture enters the float accommodating chamber 30. When the sum of the buoyancy of the liquid acting on the float 31 and the elastic force exerted by the first elastic member 80 on it is greater than the gravity acting on the float 31, the float 31 floats upward. Before the liquid level in the float accommodating chamber 30 reaches the third through hole 71, the first blocking portion 311 of the float 31 blocks the third through hole 71, thereby preventing the gas-liquid mixture in the float accommodating chamber 30 from entering the gas storage chamber 40.

[0095] The gas-liquid mixture continuously enters the gas-liquid separation device, and the separated gas continuously enters the float accommodating chamber. The gas separated from the gas-liquid mixture accumulates at the top of the float accommodating chamber 30, and the gas pressure gradually increases, and the gas pushes the liquid level in the float accommodating chamber 30 to descend. When the liquid level drops to a point where the sum of the buoyancy and elastic force acting on the float 31 is less than the gravity acting on the float 31, the float 31 moves downward, the first blocking portion 311 separates from the third through hole 71, and the third through hole 71 opens. The gas in the float accommodating chamber 30 enters the gas storage chamber 40 through the third through hole 71 and is finally discharged from the gas storage chamber 40.

[0096] The present application also provides a gas-liquid separation method for an automobile cooling system, which is applied to the above-mentioned automobile cooling system and is applied in the automobile production process. The gas-liquid separation method includes the following steps S1 to S5.

[0097] In step S1, the vehicle cooling system is evacuated via the expansion tank. At this point, the air pressure within the gas-liquid separator is negative, and the second sealing portion within the pressure relief valve, acting under atmospheric pressure and the second elastic member, seals the exhaust duct. After evacuation, coolant is added to the vehicle cooling system, and the remaining air in the cooling system is squeezed into components such as the heat exchanger and the gas-liquid separator.

[0098] In step S2, the vehicle is started and the vehicle cooling system starts working. The water pump in the vehicle cooling system drives the coolant to circulate. The gas-liquid mixture consisting of the coolant and the gas in the cooling system flows through the gas-liquid separation device. The gas-liquid separation device separates the gas in the gas-liquid mixture and discharges it into the vehicle cooling system.

[0099] In step S3, the vehicle is turned off, the cooling system's water pump stops, and the remaining air in the cooling system collects in the cooling pipes. Since some of the air in the cooling system was expelled in step S2, the coolant in the expansion tank is replenished into the cooling system, causing the expansion tank level to drop. At this point, the vehicle's cooling system is refilled with coolant.

[0100] In step S4, after the vehicle is turned off for a period of time, it is transferred to the factory road test station for road testing. The vehicle is restarted, the car cooling system starts working, and the water pump drives the coolant circulation, and the S2 stage is repeated.

[0101] In step S5, after the vehicle road test is completed, most of the air in the cooling system is removed, and the vehicle is ready for delivery. Before the vehicle leaves the factory, the cooling system is refilled with coolant for the last time so that the coolant level in the expansion tank is lower than the maximum liquid level line of the expansion tank.

[0102] After the vehicle leaves the factory, the cooling system remains closed during the user's use of the vehicle, and the coolant level in the expansion tank is maintained between the maximum and minimum liquid level lines of the expansion tank.

[0103] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with this profession can make slight changes or modifications to equivalent embodiments with equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

[0104] The disclosure of this patent document contains material that is subject to copyright protection. The copyright is reserved by the copyright owner. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the official records and files of the Patent and Trademark Office.

Claims

1. A gas-liquid separation device, characterized in that: The gas-liquid separation device comprises: A shell (10), the shell being provided with a liquid inlet (101) and a liquid outlet (102); a gas-liquid separation chamber (20), a float accommodating chamber (30) and an air storage chamber (40) being provided in the shell; the air storage chamber being arranged at the top of the float accommodating chamber and being in communication with the float accommodating chamber, and an exhaust passage (41) being provided at the top of the air storage chamber; the gas-liquid separation chamber being arranged at the bottom of the float accommodating chamber and being in communication with the float accommodating chamber, and the liquid inlet and the liquid outlet being in communication with the gas-liquid separation chamber respectively; The gas-liquid separation part (21) is arranged in the gas-liquid separation chamber, and the gas-liquid mixture flowing into the gas-liquid separation chamber from the liquid inlet flows through the gas-liquid separation part for gas-liquid separation, the separated liquid flows out of the shell through the liquid outlet, and the separated gas enters the float accommodating chamber; the gas-liquid separation part (21) includes an annular baffle (211), and the gas-liquid separation device further includes a first partition (50) arranged between the gas-liquid separation chamber (20) and the float accommodating chamber (30), the first partition (50) is provided with a first through hole (51) connecting the gas-liquid separation chamber (20) and the float accommodating chamber (30); the gas-liquid separation part (21) is also provided with a first through hole (51) between the annular baffle (211) and the float accommodating chamber (30). An annular drainage channel (212) is formed between the inner walls of the shell, and the annular baffle (211) surrounds the first through hole (51); the float accommodating chamber (30) includes a first chamber (32) and a second chamber (33) located on the top of the first chamber (32); the float (31) is located in the second chamber (33); the gas-liquid separation device further includes a second partition (60) located between the first chamber (32) and the second chamber (33); the second partition (60) is provided with a second through hole (61) communicating with the first chamber (32) and the second chamber (33); the orthographic projection of the second through hole (61) on the first partition (50) falls outside the first through hole (51); A float (31) is provided with a first blocking portion (311) at the top thereof, and the float (31) is movably arranged in the float accommodating chamber (30); the float (31) is configured such that: after the liquid in the gas-liquid separation chamber (20) enters the float accommodating chamber (30), the float (31) floats upward under the action of the buoyancy of the liquid, and the first blocking portion (311) isolates the float accommodating chamber (30) from the gas storage chamber (40); after the gas in the gas-liquid separation chamber (20) enters the float accommodating chamber (30), the gas causes the liquid level of the float accommodating chamber (30) to drop, the float (31) drops, and the float accommodating chamber (30) is communicated with the gas storage chamber (40), so that the gas enters the gas storage chamber (40) and is discharged through the exhaust passage (41).

2. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid mixture entering the gas-liquid separation chamber (20) through the liquid inlet (101) forms a vortex after flowing through the drainage channel (212), so that the gas is separated from the gas-liquid mixture and flows into the float accommodating chamber (30) through the first through hole (51).

3. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation device further comprises a buffer structure (511) arranged in the first through hole (51).

4. The gas-liquid separation device according to claim 1, characterized in that: The second partition (60) extends in a direction toward the air storage chamber (40) to form a first protrusion (601), and / or the float (31) is provided with a second protrusion on a side facing the second partition (60).

5. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation device further comprises an annular retaining wall (602) formed by extending upward from the edge of the second partition (60), the annular retaining wall (602) surrounding the second chamber (33), and the gas-liquid separation device further comprises a third partition (70) disposed between the float accommodating chamber (30) and the gas storage chamber (40), the third partition (70) being provided with a third through hole (71) communicating with the float accommodating chamber (30) and the gas storage chamber (40); The annular retaining wall (602) abuts against the third partition plate (70).

6. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation device further comprises a first elastic member (80), the top end of the first elastic member (80) abuts against the float (31), and the bottom end of the first elastic member (80) is fixed.

7. The gas-liquid separation device according to claim 1, characterized in that: One of the wall of the float accommodating chamber (30) and the outer wall of the float (31) is provided with a groove (34), and the other is provided with a rib (35). The groove (34) extends in the longitudinal direction. The rib (35) is clamped in the groove (34) and can move in the groove (34) along the extension direction of the groove (34).

8. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation device further comprises a pressure relief valve (42) arranged in the exhaust passage (41), wherein the pressure relief valve (42) is configured to open when the gas pressure in the gas storage chamber (40) is greater than a threshold value, and to close when the gas pressure in the gas storage chamber (40) is less than or equal to the threshold value.

9. The gas-liquid separation device according to claim 8, characterized in that: The pressure relief valve (42) comprises a second blocking portion (421), a second elastic member (422) and an exhaust hole (423), wherein the exhaust hole (423) is communicated with the exhaust passage (41) and the gas storage chamber (40) respectively, and the exhaust hole (423) is arranged at one end of the second blocking portion (421) facing the gas storage chamber (40), and the second blocking portion (421) is arranged at one end of the second elastic member (422) facing the gas storage chamber (40); when the gas pressure in the gas storage chamber (40) is less than or equal to the threshold value, the second elastic member (422) stretches, and the second blocking portion (421) blocks the exhaust hole (423); when the gas pressure in the gas storage chamber (40) is greater than the threshold value, the gas in the gas storage chamber (40) pushes the second blocking portion (421), compresses the second elastic member (422), and the exhaust hole (423) opens.

10. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation device further comprises a third partition plate (70) arranged between the float accommodating chamber (30) and the gas storage chamber (40), the third partition plate (70) being provided with a third through hole (71) communicating with the float accommodating chamber (30) and the gas storage chamber (40); and the side of the third partition plate (70) facing the float accommodating chamber (30) is protruded toward the gas storage chamber (40).

11. The gas-liquid separation device according to claim 1, characterized in that: The gas-liquid separation device further comprises a third partition plate (70) arranged between the float accommodating chamber (30) and the gas storage chamber (40), the third partition plate (70) being provided with a third through hole (71) communicating with the float accommodating chamber (30) and the gas storage chamber (40); a guide portion (72) is provided on a side of the third partition plate (70) facing the gas storage chamber (40), the guide portion (72) being formed by extending obliquely downward from a direction away from the third through hole (71) to a direction close to the third through hole (71).

12. An automobile cooling system, characterized in that: The automobile cooling system includes the gas-liquid separation device according to any one of claims 1 to 11.

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