A cooling system coolant filling and draining device for an automobile and a method of use

Abstract

The application discloses a kind of automobile cooling system coolant filling and emptying device and use method, including by screw connection upper pot and lower pot, the upper pot bottom of upper pot divides upper pot and lower pot into two spaces;The upper part of the upper pot is provided with injection hole, first valve interface with switch and second valve interface with switch;The bottom of the upper pot is provided with liquid discharge valve seat, the liquid discharge valve seat is installed with liquid discharge valve core, the liquid discharge valve core can move up and down in the liquid discharge valve seat, to connect or disconnect the two spaces of upper pot and lower pot;The upper part of the lower pot is provided with compressed gas interface, the lower part of the lower pot is provided with coolant pipe interface;The application can solve the drawbacks of original emptying equipment, such as high price, low efficiency, high energy consumption and large equipment volume, which is not easy to carry, and can efficiently, energy-saving and completely fill coolant and remove air in the system of electric vehicle and traditional fuel vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling liquid filling, in particular to a cooling liquid filling and emptying device for an automobile cooling system and a use method thereof. BACKGROUND

[0002] With the popularity of electric vehicles, electric vehicle maintenance and repair have gradually become a work with higher and higher participation of repair departments. Compared with the cooling system of traditional fuel vehicles, electric vehicles need to cool more components, and the corresponding cooling liquid pipeline is more complex. As a result, the filling of cooling liquid, especially the air exhaust in the pipeline after filling, is more difficult. If the air is not completely exhausted, the cooling system efficiency will be low, and even the expensive and precise electronic devices may be damaged due to insufficient cooling capacity.

[0003] Currently, the cooling liquid filling and emptying usually adopts a negative pressure extraction method, that is, a vacuum generating device is used to create negative pressure in the system to extract cooling liquid. The working principle of the commonly used vacuum generating device is as follows: compressed air is injected at high speed through a nozzle to form a jet flow at the nozzle outlet, and a suction flow is generated. Under the action of suction, the air around the nozzle outlet is continuously sucked away to obtain negative pressure. Therefore, in order to fill the cooling liquid and exhaust the air, the air compressor pump needs to work continuously to provide a large amount of compressed gas, which greatly wastes energy and is not efficient. Such equipment is usually large in size and occupies a large space. SUMMARY

[0004] In view of the problems existing in the prior art, the present application provides a cooling liquid filling and emptying device for an automobile cooling system and a use method thereof, which can solve the problems of high price, low efficiency, high energy consumption and large size of the original emptying device, and can efficiently, energy-efficiently and completely fill the cooling liquid and exhaust the air in the system of electric vehicles and traditional fuel vehicles.

[0005] The technical scheme of the present application is as follows:

[0006] In the first aspect of the present application, a cooling liquid filling and emptying device for an automobile cooling system is provided, which comprises an upper kettle and a lower kettle connected by threads, and the upper kettle bottom divides the upper kettle and the lower kettle into two spaces; the upper part of the upper kettle is provided with a liquid filling hole, a first valve interface with a switch and a second valve interface with a switch; the bottom of the upper kettle is provided with a liquid discharge valve seat, and a liquid discharge valve core is installed in the liquid discharge valve seat; the liquid discharge valve core can move up and down in the liquid discharge valve seat, thereby connecting or disconnecting the two spaces of the upper kettle and the lower kettle; the upper part of the lower kettle is provided with a compressed gas interface, and the lower part of the lower kettle is provided with a cooling liquid pipe interface.

[0007] In some embodiments of the present application, the upper kettle upper part is further provided with a liquid discharge valve core mounting hole seat, which is in a cylindrical structure, and a gas discharge hole is arranged on the liquid discharge valve core mounting hole seat, which is located inside the upper kettle.

[0008] In some embodiments of the present application, the liquid discharge valve core passes through the liquid discharge valve core mounting hole seat, the lower end of the liquid discharge valve core is placed in the liquid discharge valve seat, and the bottom end of the liquid discharge valve core is fixedly installed with a conical rubber valve.

[0009] In some embodiments of the present application, the liquid discharge valve seat is in a cylindrical structure, an exhaust liquid flow hole is arranged at the position of the liquid discharge valve seat in the upper kettle space, a conical surface is arranged inside the liquid discharge valve seat below the exhaust liquid flow hole, and the conical surface matches the shape of the conical rubber valve.

[0010] In some embodiments of the present application, the upper end of the liquid discharge valve core is placed outside the upper kettle, and a pressing cap is installed at the upper end of the liquid discharge valve core.

[0011] In some embodiments of the present application, a cylindrical rubber sealing valve and a reset spring are arranged in the liquid discharge valve core mounting hole seat, and the cylindrical rubber sealing valve is located above the reset spring.

[0012] In some embodiments of the present application, the cylindrical rubber sealing valve and the reset spring are arranged outside the liquid discharge valve core, the cylindrical rubber sealing valve is fixedly connected with the liquid discharge valve core, and the reset spring is slidingly connected with the liquid discharge valve core.

[0013] In some embodiments of the present application, the first valve interface with a switch is installed with a pressure gauge, the second valve interface with a switch is connected with the liquid return port of the automobile cooling system through a pipeline; the compressed gas interface is connected with a compressed gas pipe, and the cooling liquid pipe interface is connected with the filling port of the automobile cooling system through a pipeline.

[0014] In some embodiments of the present application, the upper kettle and the lower kettle both adopt a transparent kettle body which can see the inside liquid.

[0015] In the second aspect of the present application, a use method of the automobile cooling system cooling liquid filling and emptying device is provided, which comprises the following steps:

[0016] The cooling liquid pipe structure is connected with the filling port of the automobile cooling system through a pipeline, the compressed gas interface is connected with a compressed gas pipe, and the second valve interface with a switch is connected with the liquid return port of the automobile cooling system through a pipeline;

[0017] The compressed gas pipe and the first valve interface with a switch are closed, the second valve interface with a switch is opened, the cooling liquid is filled into the upper kettle through the liquid filling port, and the cooling liquid in the upper kettle enters the lower kettle by pressing the liquid discharge valve core and connecting the upper kettle and the lower kettle.

[0018] When the cooling liquid is about to reach the compressed gas interface, stop filling, and loosen the open liquid valve core to disconnect the upper and lower pots;

[0019] Open the compressed gas pipe and use compressed gas to press the cooling liquid in the lower pot into the cooling system until no bubbles are discharged from the second switch interface of the upper pot, completing the air evacuation and cooling liquid filling.

[0020] The one or more technical solutions of the present application have the following beneficial effects:

[0021] (1) The automobile cooling system cooling liquid filling and evacuation device provided by the present application is arranged in a pot body structure connected by upper and lower threads. In use, only compressed gas is needed, and the device can complete the filling of cooling liquid without a vacuum generating device. The amount of compressed gas needed is not greater than the volume of the lower pot. Compared with the use of a vacuum generating device, less compressed air is needed, which can save energy. At the same time, the entire device has a small volume and occupies a small space, facilitating transportation and carrying.

[0022] (2) The automobile cooling system cooling liquid filling and evacuation device provided by the present application uses compressed gas to press the cooling liquid into the cooling system through a layered, cooling liquid recyclable, multi-loop device with an open and close valve, which can simultaneously achieve the purposes of air evacuation and cooling liquid filling, is simple to operate, does not require a power source, and is easy to implement.

[0023] (3) The automobile cooling system cooling liquid filling and evacuation device provided by the present application has an interface that can be expanded to connect a pressure gauge, which can detect leaks in the system as needed. At the same time, both the upper and lower pots use pot bodies that can observe the internal liquid. Whether the cooling system has completed gas evacuation can be determined by observing whether there are bubbles in the upper pot. Whether the cooling system leaks can be detected by observing the volume change on the liquid scale of the lower pot and the scale change of the pressure gauge connected to the upper pot, which has a wide range of applications.

[0024] (4) The automobile cooling system cooling liquid filling and evacuation device provided by the present application, through the arrangement of the liquid discharge valve core, the liquid discharge valve seat, and the valve core mounting hole seat, can realize the connection and disconnection of the upper and lower pots by the up and down movement of the liquid discharge valve core, and further realize the functions of liquid inlet and air exhaust of the lower pot, which has the advantages of clever structure design, energy saving, and high efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the automobile cooling system cooling liquid filling and evacuation device of the present application;

[0026] Figure 2 It is a schematic diagram of the internal structure of the automobile cooling system cooling liquid filling and evacuation device of the present application;

[0027] Figure 3 This is a structural diagram of the installation of the liquid discharge valve core of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the liquid discharge valve seat of the present invention.

[0029] In the picture:

[0030] 1. Upper pot; 11. First switch valve interface; 12. Second switch valve interface; 13. Liquid discharge valve core mounting hole seat; 131. Air release hole; 14. Upper pot bottom;

[0031] 2. Lower pot; 21. Compressed gas interface; 22. Coolant pipe interface;

[0032] 3. Put on the lid;

[0033] 4. Liquid discharge valve core; 41. Press cap; 42. Metal connecting rod; 43. Cylindrical rubber sealing valve; 44. Return spring; 45. Conical rubber valve;

[0034] 5. Drain valve seat; 51. Exhaust flow hole; 52. Conical surface. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Example 1

[0037] In a typical embodiment of the present invention, a device for filling and draining coolant in a vehicle cooling system is provided. Figures 1-4 As shown, it includes an upper pot 1 and a lower pot 2 connected by threads, and the upper pot bottom 14 of the upper pot 1 divides the upper pot 1 and the lower pot 2 into two spaces; the upper part of the upper pot 1 is provided with a liquid injection hole, a first interface with a switch valve 11 and a second interface with a switch valve 12; the bottom of the upper pot 1 is provided with a drain valve seat 5, and a drain valve core 4 is installed in the drain valve seat 5, and the drain valve core 4 can move up and down in the drain valve seat 5, thereby connecting or disconnecting the two spaces of the upper pot 1 and the lower pot 2; the upper part of the lower pot 2 is provided with a compressed gas interface 21, and the lower part of the lower pot is provided with a coolant pipe interface 22.

[0038] In this embodiment, the upper pot 1 and lower pot 2 are connected vertically by threads, allowing them to be unscrewed and separated. The upper pot 1 is a hollow, transparent pot body, allowing the liquid inside to be visible. A threaded upper pot lid 3 is attached to the upper pot 1, which, when unscrewed, reveals an inlet for adding coolant. A drain valve mounting hole 13 is also provided at the top of the upper pot 1. This cylindrical mounting hole 13 has one end connected to the atmosphere and the other end within the upper pot 1. Two air vents 131 are located at the top of the pot interior, communicating with the inner cavity of the upper pot 1.

[0039] Further, the upper kettle liquid discharge valve core 4 is installed in the liquid discharge valve core mounting hole seat 13, the liquid discharge valve core 4 passes through the liquid discharge valve core mounting hole seat 13, the lower end of the liquid discharge valve core 4 is placed in the liquid discharge valve seat 5, and the bottom end of the liquid discharge valve core 4 is fixedly installed with the conical rubber valve 45.

[0040] The first valve interface 11 and the second valve interface 12 on the upper kettle are respectively used for connecting a pressure gauge and a cooling system return liquid pipe, and can be connected to the return liquid pipe during emptying operation and connected to the pressure gauge during leakage detection.

[0041] The liquid discharge valve seat 5 at the bottom of the upper kettle is used for discharging the liquid in the upper kettle 1 into the lower kettle 2 while discharging the gas in the lower kettle; the lower kettle 2 is a hollow transparent kettle body with visible internal liquid; the lower kettle 2 has a scale for observing the change of the liquid level in the kettle; the lower kettle 2 has no upper cover and is connected to the upper kettle 1 through threads; after connection, the bottom 15 of the upper kettle 1 serves as the upper cover of the lower kettle 2; the upper and lower kettles can be disassembled for convenient maintenance of the internal liquid discharge valve.

[0042] In the embodiment, the liquid discharge valve seat 5 is in a cylindrical structure, the liquid discharge valve seat 5 is provided with an exhaust liquid hole 51 at a position in the space of the upper kettle, the inside of the liquid discharge valve seat 5 below the exhaust liquid hole 51 is provided with a conical surface 52, and the conical surface 52 is matched with the shape of the conical rubber valve 45.

[0043] Specifically, the lower kettle 2 is provided with a compressed gas interface 21 connected to a compressed gas pipe and a cooling liquid pipe interface 22 connected to a cooling liquid filling port of a vehicle; the liquid discharge valve core 4 includes a pressing cap 41, a metal connecting rod 42, a cylindrical rubber sealing valve 43, a reset spring 44, and a conical rubber valve 45; the inside of the upper kettle liquid discharge valve seat 5 is connected to the upper kettle 1, has a conical surface 52, and forms a sealing effect with the conical rubber valve 45; the upper kettle liquid discharge valve seat 5 has an exhaust liquid hole 51 in the upper part of the conical surface 52, which is connected to the outside cylindrical surface and communicates with the upper kettle 1 after installation; the upper kettle liquid discharge valve seat 5 is coaxial with the upper kettle liquid discharge valve core 4; and the metal connecting rod of the upper kettle liquid discharge valve core 4 is inserted into the upper kettle liquid discharge valve seat 5 to install the conical rubber valve 45.

[0044] Further, the cylindrical rubber sealing valve 43 and the reset spring 44 are installed in the liquid discharge valve core mounting hole seat 13, the cylindrical rubber sealing valve 43 is located above the reset spring 44, the cylindrical rubber sealing valve 43 and the reset spring 44 are arranged outside the liquid discharge valve core 4, the cylindrical rubber sealing valve 43 is fixedly connected to the liquid discharge valve core 4, and the reset spring 44 is slidably connected to the liquid discharge valve core 4.

[0045] The installation of the liquid releasing valve core is as follows: the upper end of the metal connecting rod 42 is inserted into the upper pressing cap 41, and the other end is sequentially installed into the cylindrical rubber sealing valve 43 and the reset spring 44; the liquid releasing valve core 4 is installed by being inserted downward from the outside of the upper kettle, and after passing through the liquid releasing valve seat 5, the conical rubber valve 45 is installed; the position of the cylindrical rubber sealing valve 43 is adjusted so that the conical rubber valve 45 is tightly attached to the conical surface 52, and the cylindrical rubber sealing valve 43 blocks the air release hole 131; after the upper kettle 1, the liquid releasing valve core 4, the liquid releasing valve seat 5 and the bottom 14 of the upper kettle are combined, the whole device has the functions of downward liquid releasing and lower kettle air blocking: the upper pressing cap 41 is pressed, the cylindrical rubber sealing valve 43 no longer blocks the air release hole 131 downward, the reset spring 44 is compressed, and the conical rubber valve 45 is separated downward from the conical surface; at this time, the compressed gas in the lower kettle 2 is discharged to the atmosphere through the air flow liquid hole 51 and the air release hole 131; the liquid in the upper kettle 1 can flow to the lower kettle 2 through the air flow liquid hole 51.

[0046] In the embodiment, the first switch valve interface 11 is provided with a pressure gauge, and the second switch valve interface 12 is connected to the return liquid port of the automobile cooling system through a pipeline; the compressed gas interface 21 is connected to a compressed gas pipeline, and the cooling liquid pipeline interface 22 is connected to the filling port of the automobile cooling system through a pipeline.

[0047] The use method of the automobile cooling system cooling liquid filling and emptying device provided by the embodiment is as follows:

[0048] 1. Assemble the device according to the above description, ensure that the spring is in a compressed state, and at this time, the cylindrical rubber sealing valve blocks the air release hole 131, the conical rubber valve 45 is tightly attached to the conical surface 52 to form a sealing effect, and the spring has a downward compression allowance; after the assembly is completed, the system is air-tight; Figure 3

[0049] 2. One end of a pipeline is connected to the cooling liquid pipeline interface 22, and the other end is connected to the filling port of the automobile cooling system; one end of another pipeline is connected to the return liquid port of the automobile cooling system (the return liquid port must be the final return liquid port), and the other end is connected to the second switch valve interface 12; the compressed gas pipeline is connected to the compressed gas interface 21; the air pressure gauge is connected to the first switch valve interface 11, and the air pressure gauge should be higher than the upper kettle cover 3; after the pipelines are connected, the compressed gas switch is closed, the second switch valve interface 12 connected to the air pressure gauge is closed, and the first switch valve interface 11 connected to the return liquid pipeline is opened; the upper kettle cover 3 is unscrewed, the cooling liquid is filled into the upper kettle, and at the same time, the cooling liquid flows into the lower kettle 2 by pressing the pressing cap 41; when the cooling liquid is about to reach the compressed gas interface 21, the filling is stopped to prevent the cooling liquid from flowing like a gas pipeline, and the upper pressing cap 41 is loosened; the gas pipeline switch is opened, and the cooling liquid in the lower kettle 2 is pressed into the cooling system by using the compressed gas; attention should be paid to the fact that the liquid in the lower kettle 2 cannot be completely pressed and discharged to prevent gas from entering the cooling system; the above-mentioned liquid filling and liquid pressing steps are repeated, and it is observed that there is no gas bubble in the return liquid pipeline, which indicates that the gas in the system has been completely discharged; ​

[0050] 3. When the filling and emptying are completed, screw the upper pot cover 3; open the second valve interface 12 connected with the air pressure gauge, open the air pipe valve to press the lower pot, then close the air pipe valve, observe the volume change of the lower pot and the scale change of the air pressure gauge connected with the upper pot, if both of them have no change, it proves that the system has no leakage.

[0051] Example 2

[0052] In a typical embodiment of the present application, a method for using the cooling liquid filling and emptying device of the automobile cooling system is provided, comprising the following steps:

[0053] Connect the cooling liquid pipe structure with the automobile cooling system filling port through the pipeline, connect the compressed gas interface with the compressed air pipe, and connect the second valve interface with the return liquid port of the automobile cooling system through the pipeline;

[0054] Close the compressed air pipe and the first valve interface, open the second valve interface, fill the cooling liquid into the upper pot through the filling port, and press the liquid valve core at the same time to connect the upper pot and the lower pot, and the cooling liquid in the upper pot enters the lower pot;

[0055] When the cooling liquid reaches the compressed gas interface, stop filling, and loosen the liquid valve core to disconnect the upper pot and the lower pot;

[0056] Open the compressed air pipe, and use the compressed gas to press the cooling liquid in the lower pot into the cooling system until no air bubble is discharged from the second valve interface of the upper pot, and the air emptying and cooling liquid filling are completed.

[0057] Although the specific embodiments of the present application are described above with reference to the accompanying drawings, it is not a limitation on the protection scope of the present application, and those skilled in the art should understand that various modifications or changes made on the basis of the technical solutions of the present application without creative labor are still within the protection scope of the present application.

Claims

1. A coolant filling and emptying device for an automobile cooling system, characterized in that: It comprises an upper pot and a lower pot connected by threads, wherein the upper bottom of the upper pot divides the upper pot and the lower pot into two spaces; a liquid injection hole, a first interface with a switch valve and a second interface with a switch valve are provided on the upper part of the upper pot; a liquid discharge valve seat is provided at the bottom of the upper pot, a liquid discharge valve core is installed in the liquid discharge valve seat, and the liquid discharge valve core can move up and down in the liquid discharge valve seat, thereby connecting or disconnecting the two spaces of the upper pot and the lower pot; a compressed gas interface is provided on the upper part of the lower pot, and a cooling liquid pipe interface is provided on the lower part of the lower pot.

2. The coolant filling and emptying device for an automobile cooling system according to claim 1, characterized in that: A drain valve core mounting hole seat is also provided on the upper part of the upper pot. The drain valve core mounting hole seat is a cylindrical structure. An air vent is provided on the drain valve core mounting hole seat. The air vent is located inside the upper pot.

3. The coolant filling and emptying device for an automobile cooling system according to claim 2, characterized in that: The liquid discharge valve core passes through the liquid discharge valve core mounting hole seat, the lower end of the liquid discharge valve core is placed in the liquid discharge valve seat, and the bottom end of the liquid discharge valve core is fixedly mounted with a conical rubber valve.

4. The coolant filling and emptying device for an automobile cooling system according to claim 3, characterized in that: The drain valve seat is a cylindrical structure, and is provided with an exhaust flow hole at the position of the drain valve seat located in the upper pot space. A conical surface is provided inside the drain valve seat below the exhaust flow hole, and the conical surface matches the shape of the conical rubber valve.

5. The coolant filling and emptying device for an automobile cooling system according to claim 3, characterized in that: The upper end of the liquid discharge valve core is placed outside the upper pot, and a pressing cap is installed on the upper end of the liquid discharge valve core.

6. The coolant filling and emptying device for an automobile cooling system according to claim 3, characterized in that: A cylindrical rubber sealing valve and a reset spring are arranged in the mounting hole seat of the liquid discharge valve core, and the cylindrical rubber sealing valve is located above the reset spring.

7. The coolant filling and emptying device for an automobile cooling system according to claim 6, characterized in that: The cylindrical rubber sealing valve and the reset spring sleeve are arranged outside the liquid discharge valve core, the cylindrical rubber sealing valve is fixedly connected to the liquid discharge valve core, and the reset spring is slidably connected to the liquid discharge valve core.

8. The coolant filling and draining device for an automobile cooling system according to claim 1, wherein: The first interface with a switch valve is installed with a pressure gauge, and the second interface with a switch valve is connected to the return liquid port of the automobile cooling system through a pipeline; the compressed gas interface is connected to the compressed gas pipe, and the coolant pipe interface is connected to the filling port of the automobile cooling system through a pipeline.

9. The coolant filling and emptying device for an automobile cooling system according to claim 1, characterized in that: The upper pot and the lower pot both adopt transparent pot bodies through which the liquid inside can be seen.

10. A method for using the coolant filling and emptying device for an automobile cooling system according to any one of claims 1 to 9, characterized in that: The following steps are involved: Connect the coolant pipe structure to the filling port of the automobile cooling system through a pipeline, connect the compressed gas interface to the compressed gas pipe, and connect the second interface with the switch valve to the liquid return port of the automobile cooling system through a pipeline; Close the compressed air pipe and the first port with the switch valve, open the second port with the switch valve, add coolant into the upper pot through the filling port, and at the same time press the drain valve core to connect the upper pot and the lower pot, so that the coolant in the upper pot flows into the lower pot; When the coolant is about to reach the compressed gas interface, stop filling, loosen the liquid release valve core, and disconnect the upper and lower pots; Open the compressed air pipe and use compressed gas to push the coolant from the lower pot into the cooling system until no bubbles are discharged from the second switch interface of the upper pot, completing the air exhaust and coolant filling.

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