Cooling liquid filling and emptying device for automobile cooling system and using method of cooling liquid filling and emptying device

Abstract

The invention discloses a cooling liquid filling and emptying device for an automobile cooling system and a using method, the cooling liquid filling and emptying device comprises an upper pot and a lower pot which are connected through threads, and the upper pot bottom of the upper pot divides the upper pot and the lower pot into two spaces; the upper part of the upper kettle is provided with a liquid injection hole, a first interface with a switch valve and a second interface with a switch valve; a liquid discharging valve seat is arranged at the bottom of the upper kettle, a liquid discharging valve element is installed in the liquid discharging valve seat, and the liquid discharging valve element can move up and down in the liquid discharging valve seat, so that the two spaces of the upper kettle and the lower kettle are communicated or disconnected; the upper portion of the lower kettle is provided with a compressed gas connector, and the lower portion of the lower kettle is provided with a cooling liquid pipe connector. According to the system, the defects that original emptying equipment is high in price, low in emptying efficiency, high in energy consumption, large in size and not suitable for being carried can be overcome, cooling liquid can be injected into an electric vehicle and a traditional fuel vehicle efficiently and thoroughly in an energy-saving mode, and air in the system is exhausted.

Description

Technical Field

[0001] The invention relates to the technical field of coolant filling, and in particular to a coolant filling and emptying device for an automobile cooling system and a use method thereof. Background Art

[0002] With the popularity of electric vehicles, electric vehicle maintenance and repair has gradually become a task that the repair department is increasingly involved in. Compared with the cooling system of traditional fuel vehicles, electric vehicles need to cool more parts, and accordingly, there are more coolant pipes and the system is more complicated. As a result, it is more difficult to add coolant, especially to exhaust the air inside the pipe after filling. If the internal air is not completely exhausted, it is very easy to cause the cooling system to be inefficient, and it may even cause damage to expensive precision electronic devices due to insufficient cooling capacity.

[0003] Currently, most common methods of filling and draining coolant are to extract coolant under negative pressure, that is, to create negative pressure in the system through a vacuum generator to extract coolant. The working principle of the commonly used vacuum generator is: to use a nozzle to spray compressed air at high speed to form a jet at the nozzle outlet, generating a suction flow. Under the suction effect, the air around the nozzle outlet is continuously sucked away to obtain negative pressure. Therefore, in order to fill and drain the coolant in this way, the air compressor pump needs to work continuously to provide a large amount of compressed gas, which greatly wastes energy and is inefficient. Such equipment is usually large in size and occupies a large space. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a coolant filling and emptying device and a method for using the automobile cooling system, which can solve the disadvantages of the original emptying equipment being expensive, low emptying efficiency, high energy consumption, and large size and not suitable for carrying. It can efficiently, energy-savingly and thoroughly fill coolant for electric vehicles and traditional fuel vehicles and remove air from the system.

[0005] The technical solution of the present invention is as follows:

[0006] In a first aspect of the present invention, a coolant filling and emptying device for an automobile cooling system is provided, comprising an upper pot and a lower pot connected by threads, wherein the upper pot bottom of the upper pot divides the upper pot and the lower pot into two spaces; a liquid filling hole, a first interface with a switch valve and a second interface with a switch valve are arranged at the upper portion of the upper pot; a drain valve seat is arranged at the bottom of the upper pot, a drain valve core is installed in the drain valve seat, and the drain valve core can move up and down in the drain valve seat, thereby connecting or disconnecting the two spaces of the upper pot and the lower pot; a compressed gas interface is arranged at the upper portion of the lower pot, and a coolant pipe interface is arranged at the lower portion of the lower pot.

[0007] In some embodiments of the present invention, 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 in a cylindrical structure. A vent hole is provided on the drain valve core mounting hole seat. The vent hole is located inside the upper pot.

[0008] In some embodiments of the present invention, the drain valve core passes through the drain valve core mounting hole seat, the lower end of the drain valve core is placed in the drain valve seat, and a conical rubber valve is fixedly mounted on the bottom end of the drain valve core.

[0009] In some embodiments of the present invention, the drain valve seat is in a cylindrical structure, and an exhaust and liquid flow hole is provided 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 and liquid flow hole, and the conical surface matches the shape of the conical rubber valve.

[0010] In some embodiments of the present invention, 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.

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

[0012] In some embodiments of the present invention, the cylindrical rubber sealing valve and the return 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 return spring is slidably connected to the liquid discharge valve core.

[0013] In some embodiments of the present invention, 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 liquid return 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.

[0014] In some embodiments of the present invention, both the upper pot and the lower pot have a transparent pot body through which the liquid inside can be seen.

[0015] In a second aspect of the present invention, a method for using a coolant filling and emptying device for a vehicle cooling system is provided, comprising the following steps:

[0016] 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;

[0017] Close the compressed air pipe and the first interface with the switch valve, open the second interface with the switch valve, add coolant into the upper pot through the liquid filling port, and press the liquid discharge valve core downward to connect the upper pot and the lower pot, so that the coolant in the upper pot flows into the lower pot;

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

[0019] 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, thus completing the exhaust of air and the filling of coolant.

[0020] One or more technical solutions of the present invention have the following beneficial effects:

[0021] (1) The coolant filling and emptying device for the automobile cooling system provided by the present invention is configured as a pot body structure connected by upper and lower threads. When in use, only compressed gas is needed, and no vacuum generating device is required to complete the filling of the coolant. The required amount of compressed gas is no more than the volume of the lower pot. Compared with the use of a vacuum generating device, less compressed air is required, which can save energy. At the same time, the entire device is small in size and occupies less space, which is convenient for transportation and carrying.

[0022] (2) The coolant filling and emptying device for the automobile cooling system provided by the present invention utilizes compressed gas to pass through a layered, coolant-circulating device with multiple circuits with opening and closing valves to inject coolant into the cooling system, thereby achieving the purpose of emptying the air and filling the coolant at the same time. The operation is simple, no power supply is required, and it is easy to implement.

[0023] (3) The coolant filling and emptying device for the automobile cooling system provided by the present invention has an interface that can be expanded to connect to a pressure gauge, so that the system can be leaked as needed; at the same time, both the upper pot and the lower pot adopt a pot body through which the internal liquid can be seen, so it is possible to judge whether the gas in the cooling system has been completely discharged by observing whether there are bubbles discharged from the upper pot, and it is possible to detect whether the cooling system is leaking by observing the volume change on the liquid scale in the lower pot and the scale change of the pressure gauge connected to the upper pot, so the application range is relatively wide.

[0024] (4) The coolant filling and draining device for the automobile cooling system provided by the present invention can achieve the connection and disconnection between the upper pot and the lower pot by moving the drain valve core up and down, thereby realizing the functions of liquid filling and exhaust of the lower pot, etc., through the arrangement of the drain valve core, the drain valve seat and the valve core mounting hole seat. The structural design is ingenious and has the advantages of energy saving and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the coolant filling and emptying device of the automobile cooling system of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the coolant filling and emptying device of the automobile cooling system of the present invention;

[0027] Figure 3 It is a structural schematic 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 figure:

[0030] 1. Upper pot; 11. First switch valve interface; 12. Second switch valve interface; 13. Liquid discharge valve core mounting hole seat; 131. Air discharge 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. Liquid discharge valve seat; 51. Exhaust flow hole; 52. Conical surface. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with 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, such as Figure 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, so as to connect or disconnect 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 the lower pot 2 are connected by threads, and the two can be unscrewed and separated. The upper pot 1 is a hollow and transparent pot body through which the internal liquid can be seen. The upper pot 1 is connected with an upper pot cover 3 which is screwed on by threads, and after unscrewing, it is a liquid injection hole for adding coolant. The upper part of the upper pot 1 is also provided with a drain valve core mounting hole seat 13, which is a cylindrical structure, one end of the drain valve core mounting hole seat 13 is connected to the atmosphere, and the other end is in the upper pot 1, and the upper part of the pot inner part has two air release holes 131 connected to the inner cavity of the upper pot 1.

[0039] Furthermore, an upper pot liquid discharge valve core 4 is installed in the liquid discharge valve core mounting hole seat 13, and 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 a conical rubber valve 45 is fixedly installed at the bottom end of the liquid discharge valve core 4.

[0040] The first switch valve interface 11 and the second switch valve interface 12 on the upper pot are used to connect the pressure gauge and the return pipe of the cooling system respectively. The return pipe can be connected during the emptying operation and the pressure gauge can be connected during the leak detection.

[0041] The drain valve seat 5 at the bottom of the upper pot is used to release the liquid in the upper pot 1 into the lower pot 2 and discharge the gas from the lower pot at the same time; the lower pot 2 is a hollow and transparent pot body through which the internal liquid can be seen; the body of the lower pot 2 has a scale that can be used to observe the change in the height of the liquid in the pot; the lower pot 2 has no upper cover and is connected to the upper pot 1 up and down through threads. After the connection, the bottom 15 of the upper pot 1 serves as the upper cover of the lower pot 2, and the upper and lower pots can be removed for easy maintenance of the internal drain valve.

[0042] In this embodiment, the drain valve seat 5 is of a cylindrical structure, and an exhaust flow hole 51 is provided at the position of the drain valve seat 5 located in the upper pot space. A conical surface 52 is provided inside the drain valve seat 5 below the exhaust flow hole 51, and the conical surface 52 matches the shape of the conical rubber valve 45.

[0043] Specifically, the lower pot 2 is provided with a compressed gas interface 21 connected to the compressed gas pipe and a coolant pipe interface 22 connected to the coolant filling port of the automobile; the drain valve core 4 includes a press cap 41, a metal connecting rod 42, a cylindrical rubber sealing valve 43, a return spring 44, and a conical rubber valve 45; the upper pot drain valve seat 5 is internally connected up and down, and has a conical surface 52 inside, the conical surface 52 and the conical rubber valve 45 form a sealing effect, and the upper part of the conical surface 52 is provided with an exhaust flow hole 51 whose interior is connected to the outer cylindrical surface, and is connected with the upper pot 1 after installation; the upper pot drain valve seat 5 is coaxial with the upper pot drain valve core 4; the metal connecting rod of the upper pot drain valve core 4 is inserted into the upper pot drain valve seat 5, and the conical rubber valve 45 is installed.

[0044] Furthermore, a cylindrical rubber sealing valve 43 and a return spring 44 are installed in the liquid discharge valve core mounting hole seat 13, and the cylindrical rubber sealing valve 43 is located above the return spring 44. The cylindrical rubber sealing valve 43 and the return spring 44 are sleeved on the outside of the liquid discharge valve core 4, and the cylindrical rubber sealing valve 43 is fixedly connected to the liquid discharge valve core 4, and the return spring 44 is slidably connected to the liquid discharge valve core 4.

[0045] The installation method of the liquid discharge 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 with the cylindrical rubber sealing valve 43 and the reset spring 44; the liquid discharge valve core 4 is inserted downward from the outside of the upper pot and installed, and the conical rubber valve 45 is installed after passing through the liquid discharge valve seat 5, and the position of the cylindrical rubber sealing valve 43 is adjusted so that the conical rubber valve 45 is in close contact with the conical surface 52, and the cylindrical rubber sealing valve 43 blocks the venting hole 131; after the upper pot 1, the liquid discharge valve core 4, the liquid discharge valve seat 5 and the upper pot bottom 14 are combined, the entire device has the function of downward discharge and lower pot sealing: pressing the upper pressing cap 41, the cylindrical rubber sealing valve 43 no longer blocks the venting hole 131 downward, and compresses the reset spring 44, and the conical rubber valve 45 separates from the conical surface downward, and at this time, the compressed gas in the lower pot 2 is discharged to the atmosphere through the exhaust flow hole 51 and the venting hole 131; the liquid in the upper pot 1 can flow to the lower pot 2 through the exhaust flow hole 51.

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

[0047] The method of using the coolant filling and emptying device for the automobile cooling system provided in this embodiment is as follows:

[0048] 1. Press the device Figure 3 Assemble, ensure that the spring is in a compressed state and the cylindrical rubber sealing valve blocks the vent hole 131, the conical rubber valve 45 and the conical surface 52 are in close contact to seal, and the spring has a downward compression margin, and the system does not leak after the assembly is completed;

[0049] 2. Connect one end of a pipe to the coolant pipe interface 22, and the other end to the filling port of the automobile cooling system; connect one end of another pipe to the liquid return port of the automobile cooling system (the liquid return port must be the final liquid return port), and the other end to the second switch valve interface 12; connect the compressed air pipe to the compressed gas interface 21; connect the pressure gauge to the first switch valve interface 11, and the pressure gauge should be higher than the upper pot cover 3; after connecting all the pipelines, turn off the compressed gas switch, close the second switch valve interface 12 connected to the pressure gauge, and open the first switch valve interface 11 connected to the return liquid pipe ; Unscrew the upper pot cover 3, add coolant to the upper pot, and press the pressing cap 41 at the same time to let the coolant flow into the lower pot 2; when the coolant is about to reach the compressed gas interface 21, stop adding to prevent the coolant from flowing into the air pipe, and loosen the upper pressing cap 41; turn on the air pipe switch, use compressed gas to press the coolant of the lower pot 2 into the cooling system, and be careful not to completely press the liquid of the lower pot 2 to prevent gas from entering the cooling system; repeat the above steps of adding liquid and pressing liquid, and observe that no bubbles are discharged from the return pipe back to the upper pot 1, indicating that the gas in the system has been completely discharged;

[0050] 3. When filling and emptying are completed, screw on the upper pot cover 3; open the second switch valve interface 12 connected to the pressure gauge, open the air pipe valve to pressurize the lower pot, and then close the air pipe valve, and observe the volume change on the liquid scale of the lower pot and the scale change of the pressure gauge connected to the upper pot. If there is no change in both, it proves that there is no leakage in the system.

[0051] Example 2

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

[0053] 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;

[0054] Close the compressed air pipe and the first interface with the switch valve, open the second interface with the switch valve, add coolant into the upper pot through the liquid filling port, and press the liquid discharge valve core downward to connect the upper pot and the lower pot, so that the coolant in the upper pot flows into the lower pot;

[0055] When the coolant is about to reach the compressed gas interface, stop filling, loosen the liquid release valve core, and disconnect the upper pot and the lower pot;

[0056] 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, thus completing the exhaust of air and the filling of coolant.

[0057] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A coolant filling and emptying device for a vehicle cooling system, characterized in that: It comprises an upper pot and a lower pot connected by threads, wherein the upper pot 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 arranged on the upper part of the upper pot; a liquid discharge valve seat is arranged on 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 arranged on the upper part of the lower pot, and a coolant pipe interface is arranged on the lower part of the lower pot.

2. The coolant filling and emptying device for the 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 in a cylindrical structure. An air vent hole is provided on the drain valve core mounting hole seat. The air vent hole is located inside the upper pot.

3. The coolant filling and emptying device for the 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 a conical rubber valve is fixedly mounted on the bottom end of the liquid discharge valve core.

4. The coolant filling and emptying device for the automobile cooling system according to claim 3, characterized in that: The drain valve seat is of cylindrical structure, and is provided with an exhaust and liquid 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 and liquid flow hole, and the conical surface matches the shape of the conical rubber valve.

5. The coolant filling and emptying device for the automobile cooling system as claimed in 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 a vehicle cooling system as claimed in 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 the automobile cooling system according to claim 6, characterized in that: The cylindrical rubber sealing valve and the return 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 return spring is slidably connected to the liquid discharge valve core.

8. The coolant filling and emptying device for a vehicle cooling system as claimed in claim 1, characterized in that: 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 a vehicle cooling system as claimed in claim 1, characterized in that: The upper pot and the lower pot both adopt a transparent pot body through which the liquid inside can be seen.

10. A method for using the coolant filling and emptying device for a vehicle 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 interface with the switch valve, open the second interface with the switch valve, add coolant into the upper pot through the liquid filling port, and press the liquid discharge valve core downward 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 pot and the lower pot; 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, thus completing the exhaust of air and the filling of coolant.

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