Electronic expansion valve welding cooling system

Abstract

The invention provides an electronic expansion valve welding cooling system which comprises a water box assembly. An electronic expansion valve is arranged in the water box assembly. A water outlet is formed above a welding spot of the electronic expansion valve and is communicated with a water drainage device; the water box assembly is connected with a water inlet device, the water inlet device is communicated with the drainage device, cooling liquid flows into the water box assembly from the water inlet device, and the cooling liquid higher than the drainage port flows into the drainage device from the drainage port. The water outlet is arranged above the welding spot of the electronic expansion valve, so that the height of the liquid level is larger than that of the welding spot, the liquid level of cooling liquid is kept at a stable height, and cooling protection of the welding spot is achieved. When the height of the liquid level in the water box assembly is larger than that of the water drainage opening, the cooling liquid higher than the water drainage opening flows into the water drainage device through the water drainage opening, then the cooling liquid flows into the water inlet device from the water drainage device, cyclic utilization of the cooling liquid is achieved, the temperature of the cooling liquid is prevented from being too high, and therefore the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding cooling, and in particular to an electronic expansion valve welding cooling system. Background Art

[0002] The electronic expansion valve assembly is a commonly used throttling device in the air conditioner. The electronic expansion valve can realize the pressure regulation of the pipeline. The electronic expansion valve is mainly composed of four parts: rotor, stator, valve needle and valve body. It uses the adjusted parameters to generate electrical signals. According to the computer setting program, it controls the voltage or current applied to the electronic expansion valve, thereby controlling the movement of the valve needle, changing the flow area of ​​the valve port, and achieving the purpose of automatically adjusting the flow.

[0003] The electronic expansion valve needs to be assembled through the welding process. During the production process, the water level in the water box is required to be 1-3mm higher than the welding point, and the water temperature is required to be lower than 60℃. If the water level in the water box is low or the water temperature is high, it will cause certain damage to the valve body. In order to reduce the damage to the valve body caused by the low water level or high water temperature in the electronic expansion valve welding water box, it is necessary to manually add coolant to the water box from time to time, and the operator is required to check the water level and water temperature in the water box. When the operator finds that the water level cannot effectively cool the welding point, it is necessary to stop welding and replenish coolant in time. However, relying on manual inspection and replenishment of coolant will make it impossible to guarantee the reliability of the electronic expansion valve body protection and the consistency of process execution, thereby reducing the quality of the product.

[0004] Therefore, there is a need for an electronic expansion valve welding cooling system that can maintain the water level in the water box assembly at a higher position, and the coolant can circulate automatically, without the need for frequent manual replenishment of the coolant, preventing the coolant temperature from being too high, thereby improving production efficiency and product quality. Summary of the invention

[0005] In order to overcome the problems existing in the related art, the purpose of the present invention is to provide an electronic expansion valve welding cooling system, which can maintain the water level in the water box assembly at a higher position, and the coolant can circulate automatically, without the need for frequent manual replenishment of the coolant, preventing the coolant temperature from being too high, thereby improving production efficiency and product quality.

[0006] An electronic expansion valve welding cooling system comprises a water box assembly, wherein an electronic expansion valve is arranged in the water box assembly; a drain port is provided above the welding point of the electronic expansion valve, and the drain port is communicated with a drain device; a water inlet device is connected to the water box assembly, and the water inlet device is communicated with the drain device, and coolant flows into the water box assembly from the water inlet device, and the coolant above the drain port flows into the drain device from the drain port.

[0007] In a preferred technical solution of the present invention, a fixing plate is further provided in the water box assembly, a plurality of positioning sleeves are circumferentially provided on the fixing plate, and the electronic expansion valve is inserted into the positioning sleeves.

[0008] In a preferred technical solution of the present invention, an anti-water-falling plate is arranged on the top of the positioning sleeve, and the anti-water-falling plate has an installation opening, the installation opening is adapted to the electronic expansion valve, and the height of the anti-water-falling plate is greater than or equal to the height of the drain port.

[0009] In a preferred technical solution of the present invention, the drain port is located 1-3 mm above the welding point.

[0010] In a preferred technical solution of the present invention, the water inlet device includes a water supply box and a water supply pipe, the water supply box is connected to the first end of the water supply pipe, and the second end of the water supply pipe is connected to the water box assembly.

[0011] In a preferred technical solution of the present invention, the water inlet device also includes a water supply shaft and a first water pumping pipe, the first end of the water supply shaft is connected to the water supply box, the second end of the water supply shaft is connected to the first end of the first water pumping pipe, and the second end of the first water pumping pipe is connected to the water tank.

[0012] In a preferred technical solution of the present invention, a water pump is provided in the water tank, and the water pump is used to pump the coolant in the water tank into the water supply box via the first pumping pipe and the water supply shaft.

[0013] In a preferred technical solution of the present invention, the drainage device includes a drainage pipe, a first end of the drainage pipe is connected to the drainage port, and a second end of the drainage pipe is connected to a water receiving box, and the water receiving box is located below the water box assembly.

[0014] In a preferred technical solution of the present invention, the drainage device further comprises a return pipe, a first end of the return pipe is connected to the water receiving box, and a second end of the return pipe is connected to the water tank.

[0015] In a preferred technical solution of the present invention, a shaft sleeve is provided on the end face of the water box assembly, and the water supply shaft passes through the shaft sleeve; a second water pumping pipe is provided on the first end of the water supply shaft, and the second water pumping pipe is connected to the water supply box.

[0016] In a preferred technical solution of the present invention, a storage rack is provided on the water supply shaft near the second water pumping pipe, and a plurality of storage positions are provided on the storage rack, and the storage positions are used to place the electronic expansion valve.

[0017] The invention has the following beneficial effects: the invention provides an electronic expansion valve welding cooling system, comprising a water box assembly, wherein an electronic expansion valve is arranged in the water box assembly; a drain port is provided above the welding point of the electronic expansion valve, and the drain port is communicated with a drain device; the water box assembly is connected with a water inlet device, and the water inlet device is communicated with the drain device, and the coolant flows into the water box assembly from the water inlet device, and the coolant above the drain port flows into the drain device from the drain port. The drain port is arranged above the welding point of the electronic expansion valve, so that the liquid level is greater than the height of the welding point, and the liquid level of the coolant is maintained at a stable height, thereby realizing cooling protection of the welding point. The liquid level of the coolant is maintained above the welding point, and the operator does not need to frequently add coolant to the water box assembly. The water inlet device draws the coolant into the water box assembly, and the liquid level in the water box assembly rises continuously during the water inlet stage. When the height of the liquid level in the water box assembly is greater than the height of the drain port, the coolant above the drain port flows into the drain device through the drain port, and the coolant then flows into the water inlet device from the drain device, thereby realizing the recycling of the coolant. The coolant continuously flows between the water inlet device, the water box assembly and the drainage device, reducing the temperature of the coolant, avoiding excessively high coolant temperature, and ensuring that the coolant has a good cooling effect on the welding point, thereby improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the electronic expansion valve welding cooling system of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the water box assembly of the present invention;

[0020] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 is a front view of the electronic expansion valve welding cooling system of the present invention;

[0022] Figure 5 yes Figure 4 The enlarged view of point B in the middle;

[0023] Figure 6 It is a structural schematic diagram of the water inlet device of the present invention;

[0024] Figure 7 It is a schematic structural diagram of the drainage device of the present invention;

[0025] Figure 8 is a schematic diagram of the positional relationship between the drain outlet and the anti-water falling plate of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of a plurality of electronic expansion valves arranged on a fixed plate of the present invention;

[0027] Fig.10 It is a schematic structural diagram of the anti-water falling board of the present invention;

[0028] Fig.11 It is a schematic diagram of a water supply box of the present invention provided with a leak-proof groove.

[0029] Figure numerals: 1. water box assembly; 2. electronic expansion valve; 3. welding point; 4. drain outlet; 5. water inlet device; 6. drain device; 7. fixing plate; 8. positioning sleeve; 9. anti-water plate; 10. installation port; 11. water supply box; 12. water supply pipe; 13. water supply shaft; 14. first water pumping pipe; 15. water tank; 16. drain pipe; 17. water receiving box; 18. return pipe; 19. shaft sleeve; 20. second water pumping pipe; 21. storage rack; 22. storage position; 23. ball valve; 24. positioning block; 25. anti-leakage groove; 26. water pump. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0031] Example 1

[0032] like Figure 1-Figure 1 As shown, this embodiment provides an electronic expansion valve welding cooling system, including a water box assembly 1, in which an electronic expansion valve 2 is arranged; a drain port 4 is opened above the welding point 3 of the electronic expansion valve 2, and the drain port 4 is connected to a drain device 6; the water box assembly 1 is connected to a water inlet device 5, and the water inlet device 5 is connected to the drain device 6, and the coolant flows into the water box assembly 1 from the water inlet device 5, and the coolant above the drain port 4 flows into the drain device 6 from the drain port 4.

[0033] The water box assembly 1 consists of an end face and a side wall. The side wall is an annular structure. A plurality of electronic expansion valves 2 are installed in the annular structure. The coolant flows into the annular structure from the water inlet device 5 .

[0034] The drain port 4 is located above the welding point 3 of the electronic expansion valve 2. When the coolant in the water box assembly 1 is less, the water inlet device 5 draws the coolant into the water box assembly 1. The liquid level in the water box assembly 1 continues to rise, and the coolant covers the position of the welding point 3, which has a cooling effect on the welding point 3. In this embodiment, the coolant is cooling water as an example.

[0035] The liquid level of the coolant in the water box assembly 1 is greater than the height of the welding point 3 and less than the height of the drain port 4. The operator does not need to frequently add coolant to the water box assembly 1, which saves time and reduces labor costs.

[0036] The drain port 4 is connected to the drain device 6. When the liquid level of the coolant is greater than the height of the drain port 4, the coolant flows into the drain device 6 through the drain port 4. The drain device 6 is connected to the water inlet device 5. The coolant in the drain device 6 flows into the water inlet device 5. The water inlet device 5 pumps the coolant into the water box assembly 1 again, thereby realizing the recycling of the coolant.

[0037] Since the coolant circulates between the water inlet device 5, the water box assembly 1 and the drain device 6, the coolant near the solder joint 3 of the electronic expansion valve 2 flows from the drain port 4 into the drain device 6, and then flows from the drain device 6 into the water inlet device 5, preventing the coolant near the solder joint 3 from always staying near the solder joint 3, and preventing the coolant from being too hot. The temperature of the circulating coolant is relatively low, which can ensure that the coolant has a good cooling effect on the solder joint 3, thereby improving production efficiency and product quality.

[0038] The present embodiment provides an electronic expansion valve welding cooling system, comprising a water box assembly 1, in which an electronic expansion valve 2 is arranged; a drain port 4 is provided above the welding point 3 of the electronic expansion valve 2, and the drain port 4 is connected to a drain device 6; the water box assembly 1 is connected to a water inlet device 5, and the water inlet device 5 is connected to the drain device 6, and the coolant flows into the water box assembly 1 from the water inlet device 5, and the coolant above the drain port 4 flows into the drain device 6 from the drain port 4. The drain port 4 is arranged above the welding point 3 of the electronic expansion valve 2, so that the liquid level is greater than the height of the welding point 3, and the liquid level of the coolant is maintained at a stable height, thereby realizing cooling protection of the welding point 3. The liquid level of the coolant is maintained above the welding point 3, and the operator does not need to frequently add coolant to the water box assembly 1. The water inlet device 5 draws the coolant into the water box assembly 1, and during the water inlet stage, the liquid level in the water box assembly 1 continues to rise. When the height of the liquid level in the water box assembly 1 is greater than the height of the drain port 4, the coolant that is higher than the drain port 4 flows into the drain device 6 through the drain port 4, and then flows into the water inlet device 5 from the drain device 6, so as to realize the recycling of the coolant. The coolant continuously flows between the water inlet device 5, the water box assembly 1 and the drain device 6, so as to reduce the temperature of the coolant, avoid the coolant temperature being too high, and ensure that the coolant has a good cooling effect on the welding point 3, thereby improving the production efficiency and product quality.

[0039] Example 2

[0040] like Figure 1-Figure 11As shown, this embodiment provides an electronic expansion valve welding cooling system, including a water box assembly 1, in which an electronic expansion valve 2 is arranged; a drain port 4 is opened above the welding point 3 of the electronic expansion valve 2, and the drain port 4 is connected to a drain device 6; the water box assembly 1 is connected to a water inlet device 5, and the water inlet device 5 is connected to the drain device 6, and the coolant flows into the water box assembly 1 from the water inlet device 5, and the coolant above the drain port 4 flows into the drain device 6 from the drain port 4.

[0041] like Figure 3 As shown, a fixing plate 7 is further provided in the water box assembly 1 , and a plurality of positioning sleeves 8 are circumferentially provided on the fixing plate 7 , and the electronic expansion valve 2 is inserted into the positioning sleeves 8 .

[0042] The fixing plate 7 is an annular structure, and a plurality of positioning sleeves 8 are circumferentially distributed on the fixing plate 7 at intervals. The positioning sleeves 8 are adapted to the electronic expansion valve 2 , and the electronic expansion valve 2 is inserted into the corresponding positioning sleeves 8 .

[0043] like Figure 8-Figure 10 As shown, a water-proof plate 9 is provided on the top of the positioning sleeve 8 , and a mounting opening 10 is opened on the water-proof plate 9 . The mounting opening 10 is adapted to the electronic expansion valve 2 , and the height of the water-proof plate 9 is greater than or equal to the height of the drain port 4 .

[0044] The anti-dropping plate 9 is laid flat in the water box assembly 1. In this embodiment, the anti-dropping plate 9 is located above the liquid level of the coolant. There is coolant from below the drain port 4 of the water box assembly 1 to the bottom of the water box assembly 1. The water inlet device 5 continuously replenishes the coolant into the water box assembly 1. The coolant above the drain port 4 flows out through the drain port 4, realizing the real-time flow of the coolant, thereby reducing the temperature of the coolant.

[0045] The anti-drop plate 9 is provided with an installation opening 10, which is adapted to the electronic expansion valve 2. The electronic expansion valve 2 is first aligned with the installation opening 10, and then the electronic expansion valve 2 is inserted into the positioning sleeve 8 from top to bottom, and the positioning sleeve 8 fixes the electronic expansion valve 2. The installation opening 10 on the anti-drop plate 9 guides and limits the electronic expansion valve 2, and can also prevent the coolant in the water box assembly 1 from flowing into the electronic expansion valve 2 from the top of the positioning sleeve 8.

[0046] The anti-falling plate 9 can be used to effectively isolate the electronic expansion valve 2 from the liquid level of the coolant, preventing the electronic expansion valve 2 from falling into the coolant, causing the electronic expansion valve 2 to become stuck, and ice blockage and corrosion in the system.

[0047] The drain port 4 is located 1-3 mm above the welding point 3. Preferably, the drain port 4 is located 2.5 mm above the welding point 3, so that the liquid level of the coolant in the water box assembly 1 is located within the range of 1-3 mm above the welding point 3. The coolant is replenished through the water inlet device 5, and the drain device 6 discharges excess coolant, thereby maintaining the consistency of the liquid level height and realizing cooling protection of the welding point 3.

[0048] The water box assembly 1 of this embodiment is also provided with a fixing plate 7, and a plurality of positioning sleeves 8 are arranged circumferentially on the fixing plate 7, and the electronic expansion valve 2 is inserted into the positioning sleeve 8. An anti-falling plate 9 is provided on the top of the positioning sleeve 8, and an installation port 10 is provided on the anti-falling plate 9. The installation port 10 is adapted to the electronic expansion valve 2, and the height of the anti-falling plate 9 is greater than or equal to the height of the drain port 4. The installation port 10 on the anti-falling plate 9 guides and limits the electronic expansion valve 2, and can also prevent the coolant in the water box assembly 1 from flowing into the electronic expansion valve 2 from the top of the positioning sleeve 8. The use of the anti-falling plate 9 can effectively isolate the liquid level of the electronic expansion valve 2 and the coolant, and prevent the electronic expansion valve 2 from falling into the coolant, causing the electronic expansion valve 2 to jam, as well as ice blockage and corrosion in the system.

[0049] Example 3

[0050] like Figure 1-Figure 11 As shown, this embodiment provides an electronic expansion valve welding cooling system, including a water box assembly 1, in which an electronic expansion valve 2 is arranged; a drain port 4 is opened above the welding point 3 of the electronic expansion valve 2, and the drain port 4 is connected to a drain device 6; the water box assembly 1 is connected to a water inlet device 5, and the water inlet device 5 is connected to the drain device 6, and the coolant flows into the water box assembly 1 from the water inlet device 5, and the coolant above the drain port 4 flows into the drain device 6 from the drain port 4.

[0051] like Fig.11 As shown, the water inlet device 5 includes a water supply box 11 and a water supply pipe 12 , the water supply box 11 is connected to a first end of the water supply pipe 12 , and a second end of the water supply pipe 12 is connected to the water box assembly 1 .

[0052] like Figure 1 and Figure 6 As shown, the water inlet device 5 also includes a water supply shaft 13 and a first water pumping pipe 14. The first end of the water supply shaft 13 is connected to the water supply box 11, the second end of the water supply shaft 13 is connected to the first end of the first water pumping pipe 14, and the second end of the first water pumping pipe 14 is connected to the water tank 15.

[0053] A water pump 26 is disposed in the water tank 15 , and the water pump 26 is used to pump the coolant in the water tank 15 into the water supply box 11 via the first water pumping pipe 14 and the water supply shaft 13 .

[0054] Preferably, there are 4 water supply pipes 12 in total, which are evenly distributed around the water supply box 11. The first end of the water supply pipe 12 is connected to the water supply box 11, and the second end is connected to the water box assembly 1. The coolant in the water supply box 11 can flow into the water box assembly 1 through the 4 water supply pipes 12 at the same time. Compared with the case where only one water supply pipe 12 is used, the water supply box 11 of this embodiment can provide the coolant to the water box assembly 1 faster and more evenly, so that the liquid level in the water box assembly 1 rises evenly.

[0055] The second end of the water supply shaft 13 and the first end of the first water pumping pipe 14 are connected through a pagoda joint, so that the water supply shaft 13 and the first water pumping pipe 14 are connected, and the water pump 26 pumps the coolant in the water tank 15 into the first water pumping pipe 14. Under the action of the water pump 26, the coolant in the first water pumping pipe 14 flows into the water supply shaft 13.

[0056] Preferably, a ball valve 23 is provided on a side of the water box assembly 1 away from the water supply box 15. During the welding process of the electronic expansion valve 2, impurities such as welding slag are easily generated in the water box assembly 1, affecting the cleanliness of the coolant. The impurities in the water box assembly 1 are released through the ball valve 23, which has the effect of cleaning the water box assembly 1, thereby ensuring the stability of the water quality of the electronic expansion valve 2 during the welding process.

[0057] When the electronic expansion valve 2 welding cooling system is in operation, first connect the water pump 26 to the first pumping pipe 14, start the water pump 26, and the water pump 26 pumps the coolant in the water tank 15 into the water supply shaft 13 through the first pumping pipe 14, and the coolant in the water supply shaft 13 flows into the water supply box 11. As the liquid level in the water supply box 11 rises, the coolant in the water supply box 11 automatically flows into the water box assembly 1 through the water supply pipe 12 using the water pressure principle. In order to keep the coolant level in the water box assembly 1 stable, the excess coolant will flow from the drain port 4 into the drain device 6, and the drain device 6 is connected to the water inlet device 5, thereby realizing the automatic supply and automatic discharge of the coolant.

[0058] The water pump 26 of this embodiment draws the coolant in the water tank 15 into the water supply shaft 13 through the first water pumping pipe 14, and the coolant in the water supply shaft 13 flows into the water supply box 11. As the liquid level in the water supply box 11 rises, the coolant flows into the water box assembly 1 through the water supply pipe 12. When the liquid level of the coolant in the water box assembly 1 is higher than the drain port 4, the excess coolant flows into the drain device 6 from the drain port 4. The drain device 6 is connected to the water inlet device 5, and the coolant then passes through the water tank 15, the first water pumping pipe 14, the water supply shaft 13 and the water supply box 11 in sequence, thereby realizing the automatic circulation of the coolant, avoiding the problem of untimely manual replenishment of the coolant, and improving the production efficiency and product quality.

[0059] Example 4

[0060] like Figure 1-Figure 11 As shown, this embodiment provides an electronic expansion valve 2 welding cooling system, including a water box assembly 1, in which an electronic expansion valve 2 is arranged; a drain port 4 is opened above the welding point 3 of the electronic expansion valve 2, and the drain port 4 is connected to a drain device 6; the water box assembly 1 is connected to a water inlet device 5, and the water inlet device 5 is connected to the drain device 6, and the coolant flows into the water box assembly 1 from the water inlet device 5, and the coolant above the drain port 4 flows into the drain device 6 from the drain port 4.

[0061] The drainage device 6 includes a drainage pipe 16 , a first end of the drainage pipe 16 is connected to the drainage port 4 , and a second end of the drainage pipe 16 is connected to a water receiving box 17 , and the water receiving box 17 is located below the water box assembly 1 .

[0062] The drainage device 6 further includes a water return pipe 18 , a first end of the water return pipe 18 is connected to the water receiving box 17 , and a second end of the water return pipe 18 is connected to the water tank 15 .

[0063] Preferably, a total of four drain pipes 16 are provided and are evenly distributed, and the two ends of the drain pipe 16 are respectively connected to the drain port 4 and the water receiving box 17. When the liquid level in the water box assembly 1 is greater than the drain port 4, the excess coolant is discharged into the water receiving box 17 through the four drain pipes 16. Compared with the case where only one drain pipe 16 is used, this embodiment can discharge the excess coolant into the water receiving box 17 faster and more evenly, so that the liquid level of the coolant in the water box assembly 1 is maintained 1-3 mm above the welding point 3.

[0064] The water receiving box 17 is located above the water tank 15 . The coolant in the water receiving box 17 flows into the water tank 15 through the return pipe 18 by using the water pressure principle.

[0065] When the system is running, the coolant first flows into the water box assembly 1 from the water receiving device. When the liquid level of the coolant in the water box assembly 1 is greater than the drain port 4, in order to maintain the consistency of the liquid level in the water box assembly 1, the excess coolant will be discharged from the drain port 4 and flow into the water receiving box 17 through the drain pipe 16. The water receiving box 17 is connected to the return pipe 18. The coolant in the water receiving box 17 flows from the return pipe 18 to the water tank 15. The coolant in the water tank 15 is reused by the water inlet device 5, thereby realizing automatic supply and automatic discharge of the coolant. The above-mentioned circulation process enables the coolant to exchange heat and transfer, which can ensure that the temperature of the coolant does not exceed 60°C, thereby playing a role in reducing the temperature of the coolant.

[0066] The drainage device 6 of this embodiment includes a drainage pipe 16, the first end of which is connected to the drainage port 4, and the second end of which is connected to a water receiving box 17, which is located below the water box assembly 1. The drainage device 6 also includes a return pipe 18, the first end of which is connected to the water receiving box 17, and the second end of which is connected to the water tank 15. When the liquid level of the coolant in the water box assembly 1 is greater than the drainage port 4, in order to maintain the consistency of the liquid level in the water box assembly 1, the excess coolant will be discharged from the drainage port 4 and flow into the water receiving box 17 through the drainage pipe 16. The water receiving box 17 is connected to the return pipe 18, and the coolant in the water receiving box 17 flows from the return pipe 18 to the water tank 15, and the coolant in the water tank 15 is reused by the water inlet device 5, thereby realizing automatic supply and automatic discharge of the coolant. The above circulation process keeps the temperature of the coolant between 45°C and 55°C, ensuring that the temperature of the coolant does not exceed 60°C. The qualified rate of the coolant is increased from the original 80% to the current 100%, thereby improving production efficiency.

[0067] Example 5

[0068] like Figure 1-Figure 11 As shown, this embodiment provides an electronic expansion valve welding cooling system, including a water box assembly 1, in which an electronic expansion valve 2 is arranged; a drain port 4 is opened above the welding point 3 of the electronic expansion valve 2, and the drain port 4 is connected to a drain device 6; the water box assembly 1 is connected to a water inlet device 5, and the water inlet device 5 is connected to the drain device 6, and the coolant flows into the water box assembly 1 from the water inlet device 5, and the coolant above the drain port 4 flows into the drain device 6 from the drain port 4.

[0069] The water inlet device 5 includes a water supply box 11 and a water supply pipe 12 . The water supply box 11 is connected to a first end of the water supply pipe 12 , and a second end of the water supply pipe 12 is connected to the water box assembly 1 .

[0070] The water inlet device 5 also includes a water supply shaft 13 and a first water pumping pipe 14 . The first end of the water supply shaft 13 is connected to the water supply box 11 , the second end of the water supply shaft 13 is connected to the first end of the first water pumping pipe 14 , and the second end of the first water pumping pipe 14 is connected to a water tank 15 .

[0071] The end surface of the water box assembly 1 is provided with a shaft sleeve 19 , and the water supply shaft 13 passes through the shaft sleeve 19 ; the first end of the water supply shaft 13 is provided with a second water pumping pipe 20 , and the second water pumping pipe 20 is connected to the water supply box 11 .

[0072] A storage rack 21 is disposed on the water supply shaft 13 near the second water pumping pipe 20 , and a plurality of storage positions 22 are disposed on the storage rack 21 . The storage positions 22 are used to place the electronic expansion valve 2 .

[0073] Preferably, a leak-proof groove 25 is also opened in the water supply box 11, and the sleeve 19 is arranged in the leak-proof groove 25. The water supply box 11 is fixed by the water supply shaft 13, and the sleeve 19 plays a role in fixing the water supply shaft 13 and the water supply box 11. The leak-proof groove 25 can prevent the coolant from leaking at the connection between the water supply shaft 13 and the sleeve 19.

[0074] The first end of the second water pumping pipe 20 is connected to the first end of the water supply shaft 13, and the second end of the second water pumping pipe 20 is connected to the water supply box 11. The second water pumping pipe 20 serves to connect the water supply shaft 13 and the water supply box 11, and the coolant of the water supply shaft 13 can enter the water supply box 11 through the second water pumping pipe 20. The first water pumping pipe 14 can be connected to the water supply shaft 13, and the water in the first water pumping pipe 14 flows into the water supply box 11 through the water supply shaft 13 and the second water pumping pipe 20, or the water supply shaft 13 can be a hollow structure, and the first water pumping pipe 14 extends into the water supply shaft 13 and the second water pumping pipe 20 to supply water to the water supply box 11.

[0075] When the system is running, first, the water pump 26 is combined and connected with the first water pumping pipe 14. The water pump 26 is operated to draw coolant from the water tank 15, and the coolant enters the water supply shaft 13 from the first water pumping pipe 14, and then enters the second water pumping pipe 20 from the water supply shaft 13, and finally enters the water supply box 11 from the second water pumping pipe 20, thus completing the process of using the water pump 26 to pump water from the water tank 15 into the water supply box 11.

[0076] The storage rack 21 is arranged above the water supply shaft 13. Preferably, the storage rack 21 adopts a centipede rack. Six brackets extend outward from the center point of the storage rack 21. Before installing the electronic expansion valve 2, an electronic expansion valve 2 is placed in each storage position 22 of the storage rack 21, and then the electronic expansion valves 2 are installed one by one in the positioning sleeve 8, so that the electronic expansion valve 2 has an independent placement space.

[0077] In this embodiment, a storage rack 21 is arranged on the top of the water supply shaft 13, and a plurality of storage positions 22 are arranged on the storage rack 21. The operator first places a plurality of electronic expansion valves 2 on the corresponding storage positions 22, and then installs the electronic expansion valves 2 on the storage positions 22 one by one into the positioning sleeve 8, so that the electronic expansion valves 2 have an independent placement space.

[0078] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0079] It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would then be positioned "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0080] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electronic expansion valve welding cooling system, characterized in that: It includes a water box assembly, in which an electronic expansion valve is arranged; a drain port is opened above the welding point of the electronic expansion valve, and the drain port is connected to a drain device; the water box assembly is connected to a water inlet device, and the water inlet device is connected to the drain device, and coolant flows into the water box assembly from the water inlet device, and the coolant above the drain port flows into the drain device from the drain port.

2. The electronic expansion valve welding cooling system according to claim 1, characterized in that: A fixing plate is also provided in the water box assembly, and a plurality of positioning sleeves are circumferentially provided on the fixing plate, and the electronic expansion valve is inserted into the positioning sleeves.

3. The electronic expansion valve welding cooling system according to claim 2, characterized in that: The top of the positioning sleeve is provided with an anti-water-falling plate, the anti-water-falling plate is provided with a mounting opening, the mounting opening is adapted to the electronic expansion valve, and the height of the anti-water-falling plate is greater than or equal to the height of the drain port.

4. The electronic expansion valve welding cooling system according to claim 1, characterized in that: The drain port is located 1-3 mm above the welding point.

5. The electronic expansion valve welding cooling system according to claim 1, characterized in that: The water inlet device comprises a water supply box and a water supply pipe, wherein the water supply box is connected to a first end of the water supply pipe, and a second end of the water supply pipe is connected to the water box assembly.

6. The electronic expansion valve welding cooling system according to claim 5, characterized in that: The water inlet device also includes a water supply shaft and a first water pumping pipe, the first end of the water supply shaft is connected to the water supply box, the second end of the water supply shaft is connected to the first end of the first water pumping pipe, and the second end of the first water pumping pipe is connected to the water tank.

7. The electronic expansion valve welding cooling system according to claim 6, characterized in that: A water pump is arranged in the water tank, and the water pump is used to pump the coolant in the water tank into the water supply box via the first water pumping pipe and the water supply shaft.

8. The electronic expansion valve welding cooling system according to claim 6, characterized in that: The drainage device comprises a drainage pipe, a first end of the drainage pipe is communicated with the drainage port, a second end of the drainage pipe is connected to a water receiving box, and the water receiving box is located below the water box assembly.

9. The electronic expansion valve welding cooling system according to claim 8, characterized in that: The drainage device also includes a water return pipe, a first end of the water return pipe is connected to the water receiving box, and a second end of the water return pipe is connected to the water tank.

10. The electronic expansion valve welding cooling system according to claim 6, characterized in that: The end surface of the water box assembly is provided with a shaft sleeve, and the water supply shaft passes through the shaft sleeve; the first end of the water supply shaft is provided with a second water pumping pipe, and the second water pumping pipe is connected to the water supply box.

11. The electronic expansion valve welding cooling system according to claim 10, characterized in that: A storage rack is arranged on the water supply shaft near the second water pumping pipe, and a plurality of storage positions are arranged on the storage rack, and the storage positions are used to place the electronic expansion valve.

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