CN115163287A - Exhaust apparatus, cooling circulation system and car - Google Patents
Exhaust apparatus, cooling circulation system and car Download PDFInfo
- Publication number
- CN115163287A CN115163287A CN202210760193.5A CN202210760193A CN115163287A CN 115163287 A CN115163287 A CN 115163287A CN 202210760193 A CN202210760193 A CN 202210760193A CN 115163287 A CN115163287 A CN 115163287A
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- Prior art keywords
- cooling
- exhaust
- ball
- exhaust passage
- connecting rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/028—Deaeration devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
- F16K31/24—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The embodiment of the application provides an exhaust apparatus, cooling cycle system and car. The exhaust apparatus includes: the exhaust passage opening/closing control device includes a main body, at least two joints provided in the main body, and a float device for controlling opening/closing of the exhaust passage. The main body part is provided with a liquid storage cavity and an exhaust passage which are communicated with each other. The joint is used for being connected with the cooling pipeline. The floater device is arranged in the liquid storage cavity, and when the liquid level of the liquid storage cavity is higher than or equal to a preset liquid level, the floater device closes the exhaust passage. The exhaust device of this application embodiment, according to the size of stock solution intracavity gas pressure, through the change that changes float device position in stock solution intracavity, the automatic break-make that realizes exhaust passage has improved cooling circulation system's exhaust effect, has degree of automation height, need not the advantage that personnel regularly inspected.
Description
Technical Field
The invention belongs to the field of automobile engines, and particularly relates to an exhaust device, a cooling circulation system and an automobile.
Background
The service life of the engine is adversely affected by the overhigh temperature of the engine, and the redundant heat of the engine can be taken away by the cooling liquid circulating in the cooling system loop to cool the engine. However, in the entire vehicle, the cooling system loop is complex in bending and long in length, and before the coolant is poured, a large amount of air exists in the cooling system loop, so that when the coolant is poured, gas is accumulated in a local part of the cooling system loop, and the following adverse effects are generated:
1. the accumulated gas blocks the flow of coolant in the cooling system circuit, affecting the cooling effect on the engine.
2. Air in the cooling system loop can form bubbles along with stirring of the cooling liquid and be attached to the inner wall of the pipeline, and heat exchange efficiency is reduced.
3. When too much air exists in a cooling system loop, the too much air is collected at positions such as a water pump impeller and the like, so that the operation of a water pump is influenced, the circulating flow rate of cooling liquid is reduced, and even the problem that the cooling liquid cannot flow is caused.
4. Bubbles attached to the inner wall of the cooling system loop can be exploded under the impact of water flow, so that cavitation erosion is caused, and the service life of the cooling system loop is shortened.
Disclosure of Invention
In view of the above, it is desirable to provide an exhaust device, a cooling cycle system and an automobile capable of smoothly exhausting gas.
The embodiment of the application provides an exhaust apparatus, includes:
a main body part having a liquid storage chamber and an exhaust passage which are communicated with each other;
at least two connectors disposed on the body portion;
the floater device is used for controlling the air exhaust passage to be opened and closed and is arranged in the liquid storage cavity, and when the liquid level of the liquid storage cavity is higher than or equal to a preset liquid level, the floater device closes the air exhaust passage.
In some embodiments, the vent passage is disposed in a top wall of the reservoir chamber.
In some embodiments, the float device includes a floating ball, and the floating ball moves along a preset track under the action of buoyancy to block or open the inlet of the exhaust passage.
In some embodiments, the float device includes a plurality of limiting ribs, each of the limiting ribs is connected to the main body portion and defines a limiting channel extending in the up-down direction, and the float ball is restrained in the limiting channel in a floating manner.
In some embodiments, the float device includes a connecting rod, a floating ball, and a ball head disposed in the liquid storage cavity, a first end of the connecting rod is rotatably connected to an inner wall of the liquid storage cavity, a second end of the connecting rod is connected to the floating ball, the ball head is disposed on the connecting rod, the ball head is located between a swing fulcrum of the connecting rod and the floating ball, and the floating ball drives the connecting rod to swing with the first end as a fulcrum, so that the ball head blocks or opens an inlet of the exhaust passage.
In some embodiments, a distance between the ball head and the swing fulcrum is less than a distance between the ball head and the floating ball.
The embodiment of the present application further provides a cooling circulation system for dispel the heat to the engine, including: the water pump is connected with the cooling pipeline to drive liquid in the cooling pipeline to flow, and a joint of the exhaust device is connected with the cooling pipeline.
In some embodiments, a first shoulder is disposed on the fitting, and the cooling line cooperates with the first shoulder stop.
The embodiment of the present application further provides an automobile, which includes a water tank and the cooling circulation system described in the foregoing embodiment, wherein the cooling liquid in the cooling circulation system flows through the water tank.
In some embodiments, the exhaust is disposed in a cooling conduit system at a rear axle location of the vehicle.
The exhaust apparatus of this application embodiment, according to stock solution intracavity gas pressure's size, through the change that changes float device position in stock solution intracavity, the automatic break-make that realizes the exhaust passage has improved cooling circulation system's exhaust effect, has degree of automation height, need not the advantage that personnel regularly inspected.
Drawings
FIG. 1 is a schematic view of an exhaust apparatus according to an embodiment of the present application;
fig. 2 is a schematic view of an exhaust apparatus according to another embodiment of the present application.
Description of the reference numerals
A main body part 1; a liquid storage cavity 11; an exhaust passage 12; a joint 2; a first shoulder 21; a float device 3; a floating ball 31; a connecting rod 32; a ball head 33; spacing rib 34
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
The embodiment of the application provides a cooling circulation system for dispel the heat to the engine. The cooling circulation system includes: water pump, cooling line and exhaust apparatus. Wherein, the water pump is connected with the cooling pipeline to the coolant liquid of drive cooling pipeline flows.
It should be noted that the cooling circulation system is used as a sealed circulation system, and the cooling liquid takes away the excess heat of the engine or the driving motor in the flowing process of the cooling pipeline, so as to help the engine or the driving motor maintain a normal working environment temperature. The cooling circulation system has a large amount of gas present therein before storing the cooling liquid. Because the cooling pipeline is bent and complicated and the pipeline is long, the phenomenon of gas accumulation in the cooling pipeline is easy to occur when cooling liquid is filled into the cooling circulation system, so that the cooling liquid cannot be well filled in a cooling loop, and the cooling effect on an engine or a driving motor is reduced.
For this reason, the exhaust device in the embodiment of the present application is used for exhausting the cooling cycle system.
As a component of the cooling circulation system, the exhaust device, referring to fig. 1, includes: a main body part 1, at least two joints 2 provided on the main body part 1, and a float device 3. Wherein the joint 2 of the exhaust device is used for connecting with the cooling pipeline.
The cooling line may be axially positioned on the exhaust device in any manner, such as a shoulder, a collar, a sleeve, a conical head, or the like.
Illustratively, a first shoulder 21 is provided on each of the two joints 2, and the cooling line is in stop fit with the first shoulder 21.
In this embodiment, after the exhaust device and the cooling pipe are assembled, the first shoulder 21 axially positions the cooling pipe, and limits the degree of freedom for the cooling pipe to move to one side of the exhaust device.
In order to improve the sealing performance of the cooling circulation system, a sealing member for sealing the joint 2 is provided at the joint 2 where the exhaust device and the cooling line are connected. The type of seal is not limited, and in some embodiments the seal is an O-ring seal, and in other embodiments the seal is a lip seal.
The main body 1 of the exhaust device has a reservoir chamber 11 and an exhaust passage 12 communicating with each other. The float device 3 is provided in the liquid storage chamber 11 and controls opening and closing of the exhaust passage 12.
It should be noted that the float device 3 is located at different positions according to the buoyancy principle according to the change of the liquid level height. In the process of filling the coolant, when the liquid level of the reservoir chamber 11 is higher than or equal to a preset liquid level, the float device 3 closes the exhaust passage 12.
It should be noted that, before the reservoir chamber 11 stores the cooling liquid, a large amount of gas is present therein, and during the filling of the cooling liquid, as the liquid level in the reservoir chamber 11 rises, when the liquid level in the reservoir chamber 11 is equal to or higher than a predetermined liquid level, the float device 3 closes the air discharge passage 12. After the float device 3 closes the air discharge passage 12, the gas concentration in the reservoir chamber 11 continues to increase and the pressure of the gas against the liquid increases. When the gas pressure is higher than the system pressure (140 kpa to 250 kpa), the gas lowers the water level in the liquid storage chamber 11, the float device 3 lowers along with the lowering, and when the liquid level of the liquid storage chamber 11 is lower than a preset liquid level, the float device 3 opens the exhaust passage 12, and the gas is exhausted to the outside of the cooling circulation system. The liquid level of the coolant continues to rise and the float device 3 rises together therewith, and when the liquid level of the liquid storage chamber 11 is equal to or higher than the preset liquid level, the float device 3 closes the exhaust passage 12 again.
It is understood that the predetermined liquid level of the reservoir chamber 11 means a height of the liquid level when the liquid in the reservoir chamber 11 is capable of abutting the float device 3 against the air discharge passage 12 and closing the air discharge passage 12.
The float device 3 is a dynamic continuous process in which the position is adjusted according to the change of the pressure in the reservoir chamber 11 of the air discharge device, and the air discharge passage is opened and closed, and the pressure in the reservoir chamber 11 and the system pressure (140 kpa to 250 kpa) are kept in a dynamic balance state.
The exhaust apparatus of this application embodiment, according to the size of gas pressure in the stock solution chamber 11, through the change that changes float device 3 position in stock solution chamber 11, the automatic break-make that realizes 12 to exhaust passage has improved cooling circulation system's exhaust effect, has degree of automation height, need not the advantage that personnel regularly inspected.
The position of the air discharge passage 12 in the reservoir chamber 11 is not limited, and the air discharge passage 12 is provided in the top wall of the reservoir chamber 11, for example.
In this embodiment, since the density of the gas is less than that of the cooling liquid, the gas moves upward in the reservoir chamber 11, and the exhaust passage 12 is disposed on the top wall of the reservoir chamber 11, which facilitates smooth exhaust of the gas from the exhaust passage 12.
The floating device 3 is not limited in structural form, and for example, the floating device 3 includes a floating ball 31, and the floating ball 31 moves along a preset trajectory under the action of buoyancy to block or open the inlet of the exhaust passage 12.
After the liquid storage cavity 11 is filled with the cooling liquid, the bottom end of the floating ball 31 is always in contact with the cooling liquid, and the floating ball 31 rises and falls in the liquid storage cavity 11 along with the change of the liquid level of the cooling liquid.
In this embodiment, the floating ball 31 realizes automatic control of the opening and closing of the exhaust passage 12 along with the change of the liquid level of the coolant due to the buoyancy.
The material of the floating ball 31 is not limited, as long as the selected density lower than that of the cooling liquid is ensured, and the floating ball has certain strength. In some embodiments, the material of the floating ball 31 is PE plastic (Polyethylene), and in other embodiments, the floating ball 31 is PP plastic (Polypropylene).
In order to realize that the floating ball 31 moves along the preset track, the float device 3 further includes a plurality of limiting ribs 34, each limiting rib 34 is connected with the main body portion 1 and defines a limiting channel extending in the up-down direction, and the floating ball 31 is restrained in the limiting channel in a floating manner.
In this embodiment, each of the limiting ribs 34 limits the degree of freedom of the floating ball 31 in the horizontal direction, so that the floating ball 31 can only move in the up-and-down direction due to the buoyancy, and when the floating ball 31 moves to the top end of the limiting channel in the upward direction, the floating ball 31 accurately abuts against the end surface of the exhaust passage 12 to close the exhaust passage 12. When the gas pressure is higher than the system pressure (140 kpa-250 kpa), the gas will lower the water level in the liquid storage chamber 11, the floating ball 31 will lower along with the gas, and when the liquid level in the liquid storage chamber 11 is lower than the preset liquid level, as shown in fig. 2, the floating ball 31 opens the exhaust passage 12, and the gas is exhausted to the outside of the cooling circulation system. The embodiment has the advantages of simple structure, capability of improving the reliability of the exhaust device and the like.
The structure of the limiting rib 34 is not limited, and in an embodiment, referring to fig. 2, the limiting rib 34 is an L-shaped bent sheet metal structure. One end of the sheet metal structure is connected with the main body part 1, and the other end of the sheet metal structure is used for receiving the floating ball 31. In another embodiment, the limiting rib 34 may be a convex structure disposed on the inner wall of the liquid storage cavity 11, or the limiting rib 34 may separately enclose the movement space of the floating ball 31, and the limiting rib 34 is made into a hollow structure, so that the cooling liquid contacts with the floating ball 31 to drive the floating ball 31 to move up and down.
The fixing method of the stopper rib 34 to the main body 1 is not limited, and for example, the stopper rib 34 and the main body 1 may be fixed by welding or bonding.
For example, referring to fig. 1, the float device 3 includes a connecting rod 32, a floating ball 31, and a ball head 33 disposed in the liquid storage chamber 11, a first end of the connecting rod 32 is rotatably connected to an inner wall of the liquid storage chamber 11, a second end of the connecting rod 32 is connected to the floating ball 31, the connecting rod 32 is provided with the ball head 33, the ball head 33 is located between a swing fulcrum of the connecting rod 32 and the floating ball 31, and the floating ball 31 drives the connecting rod 32 to swing with the first end as a fulcrum, so that the ball head 33 blocks or opens an inlet of the exhaust passage 12.
It should be noted that, after the liquid storage cavity 11 contains the cooling liquid, the bottom end of the floating ball 31 is always in contact with the cooling liquid, and the floating ball 31 drives the connecting rod 32 to swing with the first end as a fulcrum along with the change of the liquid level of the cooling liquid.
It should be noted that the position of the fixing point of the first end of the connecting rod 32 on the inner wall is not limited, and in some embodiments, the fixing point of the connecting rod 32 on the inner wall is set at the position where the connecting rod 32 is in the horizontal position. In this arrangement, when the second end of the link 32 is not lower than the first end, the ball 33 can abut against the end surface of the exhaust passage 12 to close the exhaust passage 12.
In this embodiment, the exhaust is connected to the cooling circuit. In the process of filling the cooling liquid, the gas in the cooling pipeline enters the liquid storage cavity 11 and is gathered at the upper part of the liquid storage cavity 11. Along with the rise of the liquid level in the liquid storage cavity 11, the floating ball 31 drives the connecting rod 32 to swing along the counterclockwise direction by taking the first end as a fulcrum. As shown in fig. 1, the bulb 33 abuts on an end surface of the exhaust passage 12 at this time, and closes the exhaust passage 12. After the float device 3 closes the air discharge passage 12, the concentration of the gas in the reservoir chamber 11 continues to increase and the pressure of the gas against the liquid increases. When the gas pressure is higher than the system pressure (140 kpa-250 kpa), the gas can make the water surface in the liquid storage cavity 11 drop, the floating ball 31 drives the connecting rod 32 to swing clockwise by taking the first end as a fulcrum until the ball head 33 is separated from the end surface of the exhaust passage 12, and the exhaust passage 12 is opened. And discharging the gas to the outside of the cooling circulation system. The liquid level of the cooling liquid continues to rise, and the floating ball 31 drives the connecting rod 32 to swing in the counterclockwise direction again by taking the first end as a fulcrum until the ball head 33 closes the exhaust passage 12.
In the embodiment, the exhaust device designed by utilizing the buoyancy principle and the lever device has the advantages of compact structure, small occupied space in the liquid storage cavity 11 and the like.
The connection between the rod 32 and the chamber is not limited, and in some embodiments, the first end of the rod 32 is connected to the inner wall of the chamber by a hinge.
The shape of the link 32 is not limited, and in some embodiments, the link 32 is a cylindrical structure. In other embodiments, the link 32 is a hexahedral structure.
The material of the connecting rod 32 is not limited, in some embodiments, the connecting rod 32 is made of 40Cr, 304 stainless steel, 45# steel, ball mill cast iron, and in other embodiments, the connecting rod 32 is made of hard plastic: bakelite (phenolic Plastic), carbon Fiber (Carbon Fiber Reinforced Polymer/Plastic), ABS Plastic (Acrylonitrile Butadiene Styrene Plastic), and the like.
The connection mode of the ball 33 and the connecting rod 32 is not limited, in some embodiments, a through hole is provided at a position on the connecting rod 32 near the first end, a pin is provided at the lower end of the ball 33, the pin is inserted into the through hole, and the ball 33 and the connecting rod 32 are connected through the pin.
The connection manner of the connecting rod 32 and the floating ball 31 is not limited, in some embodiments, the floating ball 31 is provided with a blind hole, and the second end of the connecting rod 32 is inserted into the blind hole, so that the connecting rod 32 and the floating ball 31 form an insertion fit.
The position of the ball 33 on the connecting rod 32 is not limited, and the distance between the ball 33 and the swing fulcrum is smaller than the distance between the ball 33 and the floating ball 31.
In this embodiment, the moment arm is inversely proportional to the applied force, with the moment being constant. The moment arm between the ball head 33 and the swinging point is smaller than the moment arm between the ball head 33 and the floating ball 31, so that the floating ball 31 can swing the connecting rod 32 only by small acting force, and the smoothness of the movement of the connecting rod 32 is improved.
A second aspect of embodiments of the present application provides an automobile including an electric motor, a water tank, and the cooling cycle system of any one of the above. The cooling liquid in the cooling circulation system flows through the water tank.
In the embodiment, the water tank cools the cooling liquid flowing through the cooling circulation system, so that the heat generated in the running process of the automobile can be relieved.
The position of the exhaust device disposed in the cooling pipeline is not limited, and the exhaust device should be specifically disposed according to actual conditions such as the driving mode of the automobile (such as front driving, rear driving, and four-wheel driving) and the position of the motor or the engine (such as front driving and rear driving).
Illustratively, the exhaust is disposed in the cooling conduit system at a rear axle location of the vehicle.
In one embodiment, the vehicle is a dual-motor four-wheel drive electric vehicle. The electric motor is arranged at the front axle and the rear axle of the automobile respectively, the electric motor arranged at the front axle is used for driving the front wheels to move, and the electric motor arranged at the rear axle is used for driving the rear wheels to move. The water tank is arranged on one side of a front axle of the automobile, and the two motors share the same water tank. In this case, the cooling line between the water tank and the motor of the rear axle is long, and when the cooling line is filled with the coolant, gas is likely to accumulate at a position on the side of the cooling line close to the rear axle. In order to facilitate the gas discharge, the exhaust device is arranged at the rear axle position of the automobile. Therefore, the cooling liquid can be fully filled in the cooling pipeline, and the cooling effect on the motor is improved.
The various embodiments/implementations provided herein may be combined with each other without contradiction. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An exhaust apparatus, comprising:
a main body part having a liquid storage chamber and an exhaust passage which are communicated with each other;
at least two connectors provided on the main body portion;
the floater device is used for controlling the air exhaust passage to be opened and closed and is arranged in the liquid storage cavity, and when the liquid level of the liquid storage cavity is higher than or equal to a preset liquid level, the floater device closes the air exhaust passage.
2. The vent apparatus of claim 1, wherein the vent passageway is disposed in a top wall of the reservoir chamber.
3. The exhaust apparatus as claimed in claim 1, wherein the float means comprises a floating ball which moves along a predetermined trajectory by buoyancy to block or unblock the inlet of the exhaust passage.
4. The exhaust apparatus as claimed in claim 3, wherein the float means includes a plurality of stopper ribs, each of which is connected to the main body portion and defines a stopper passage extending in an up-down direction, and the float ball is sinkable and lowerably restrained in the stopper passage.
5. The exhaust device according to claim 1, wherein the float device includes a connecting rod, a floating ball, and a ball head disposed in the liquid storage cavity, a first end of the connecting rod is rotatably connected to an inner wall of the liquid storage cavity, a second end of the connecting rod is connected to the floating ball, the ball head is disposed on the connecting rod, the ball head is located between a swing fulcrum of the connecting rod and the floating ball, and the floating ball drives the connecting rod to swing with the first end as a fulcrum, so that the ball head blocks or opens an inlet of the exhaust passage.
6. The exhaust apparatus as claimed in claim 5, wherein a distance between the ball and the swing fulcrum is smaller than a distance between the ball and the floating ball.
7. A cooling cycle system for dissipating heat from an engine, comprising: a water pump, a cooling pipeline and an exhaust device according to any one of claims 1 to 6, wherein the water pump is connected with the cooling pipeline to drive the liquid in the cooling pipeline to flow, and a joint of the exhaust device is connected with the cooling pipeline.
8. The cooling circulation system of claim 7, said fitting having a first shoulder disposed thereon, said cooling line being in stop engagement with said first shoulder.
9. An automobile, characterized by comprising a water tank and the cooling cycle system of any one of claims 7 to 8, wherein the cooling liquid in the cooling cycle system flows through the water tank.
10. The vehicle of claim 9, wherein the exhaust is disposed in a cooling conduit system at a rear axle location of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210760193.5A CN115163287A (en) | 2022-06-29 | 2022-06-29 | Exhaust apparatus, cooling circulation system and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210760193.5A CN115163287A (en) | 2022-06-29 | 2022-06-29 | Exhaust apparatus, cooling circulation system and car |
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| CN115163287A true CN115163287A (en) | 2022-10-11 |
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|---|---|---|---|
| CN202210760193.5A Pending CN115163287A (en) | 2022-06-29 | 2022-06-29 | Exhaust apparatus, cooling circulation system and car |
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| EP2578838A1 (en) * | 2011-10-03 | 2013-04-10 | Volvo Car Corporation | Cooling system for an engine |
| CN103206572A (en) * | 2012-01-11 | 2013-07-17 | 高仁超 | Combined-lever-type automatic air inlet and exhaust valve |
| EP3686473A1 (en) * | 2017-09-25 | 2020-07-29 | TLV Co., Ltd. | Deterioration determination device of liquid pumping apparatus, and liquid pumping apparatus |
| CN109488446A (en) * | 2018-12-28 | 2019-03-19 | 象山权友机械有限公司 | A kind of automobile antifreezing fluid exchange device |
| CN210531726U (en) * | 2019-09-20 | 2020-05-15 | 北京帕菲诺精密机械有限公司 | Exhaust valve |
| CN111928009A (en) * | 2020-08-09 | 2020-11-13 | 唐兰芳 | Heating exhaust valve combination device |
| CN112533446A (en) * | 2020-11-27 | 2021-03-19 | 株洲中车时代电气股份有限公司 | Converter system and converter cooling water system thereof |
| CN214647547U (en) * | 2020-12-04 | 2021-11-09 | 浙江吉利控股集团有限公司 | Gravity type gas overflow shutoff valve, automobile electric drive cooling system and automobile |
| CN114477060A (en) * | 2021-12-01 | 2022-05-13 | 东风汽车集团股份有限公司 | New energy automobile coolant liquid filling auxiliary assembly |
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