Semi-automatic refrigerant adding device

Abstract

The invention discloses a semi-automatic refrigerant adding device, which relates to the technical field of refrigerant filling and comprises a bearing plate and a top plate, a refrigerant storage tank is arranged on the bearing plate, the top plate is mounted right above the bearing plate, and an anti-toppling mechanism is arranged on the top plate. The anti-toppling mechanism is used for preventing the refrigerant storage tank from shaking and toppling during refrigerant filling, a weighing device used for weighing the refrigerant storage tank is arranged on the bearing plate, a pressurizing unit is arranged on the top plate, and the pressurizing unit is used for increasing the refrigerant filling speed. The pressure regulating part is arranged on the top plate, is matched with the pressurizing unit and is used for regulating the flow speed during refrigerant filling; in the initial stage of refrigerant filling, the refrigerant is filled into the refrigerating system from the storage tank in the negative pressure environment, along with filling, the system pressure is reduced, the pressurizing unit intervenes, the filling pressure is increased to compensate the reduction, and the pressure is kept constant.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerant filling, in particular to a semi-automatic refrigerant filling device. Background Art

[0002] Refrigerant is the working medium used to transfer heat in the refrigeration system. It absorbs or releases heat by undergoing phase change (from liquid to gas, or from gas to liquid) under different pressure and temperature conditions, thereby achieving the purpose of cooling or heating. A semi-automatic refrigerant adding device is a device used to add refrigerant to a refrigeration system. It combines the flexibility of manual operation with partial automation functions to ensure the accuracy and efficiency of the refrigerant adding process. It is suitable for various types of refrigeration systems, such as refrigerant replenishment and initial filling of air conditioners, refrigerators and other equipment. However, despite the improvement compared to manual operation, the metering accuracy of some semi-automatic devices is still difficult to reach a high level. When adding refrigerant to a refrigeration system, the negative pressure state in the refrigerant storage tank and the refrigeration system is first used to add refrigerant. However, as a result, the pressure in the refrigerant storage tank gradually decreases, resulting in a longer and longer time for subsequent refrigerant filling, which greatly affects the efficiency of adding refrigerant to the refrigeration system and is difficult to meet the needs of large-scale refrigerant filling work; The Chinese patent document announcement number (CN115900152B) "discloses a refrigerant filling method and a refrigerant filling device. The method includes: obtaining a target filling mass of the refrigerant required by the equipment to be filled; controlling the first pressure switch and the second pressure switch to open to fill the refrigerant into the equipment to be filled, and obtaining first refrigerant mass information of the refrigerant filled into the equipment to be filled; according to the first refrigerant mass information and the target filling mass, controlling the first pressure switch and the second pressure switch to close, and obtaining first static time information; according to the first time information, adjusting the working state of the second pressure switch , so as to fill the refrigerant to the target filling mass into the equipment to be filled; wherein, the pressure parameter of the first pressure switch is greater than the pressure parameter of the second pressure switch. The technical solution of the embodiment of the present invention adjusts the working states of the first pressure switch and the second pressure switch by obtaining the target filling mass of the refrigerant and the first refrigerant mass information, thereby optimizing the refrigerant filling operation process and improving the refrigerant filling accuracy. Although the above patent document can optimize the refrigerant filling operation process and improve the refrigerant filling accuracy, it is difficult to adjust the refrigerant filling flow rate according to actual conditions. For this reason, we propose a semi-automatic refrigerant filling device. Summary of the invention

[0003] The object of the present invention is to provide a semi-automatic refrigerant adding device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a semi-automatic refrigerant adding device, comprising: A load-bearing plate, on which a refrigerant storage tank is arranged, further comprising: A top plate installed directly above the load-bearing plate, and an anti-dumping mechanism is provided on the top plate, the anti-dumping mechanism is used to prevent the refrigerant storage tank from shaking and tipping when the refrigerant is filled, a weighing device for weighing the refrigerant storage tank is provided on the load-bearing plate, a pressurizing unit is provided on the top plate, the pressurizing unit is used to increase the rate of refrigerant filling, and; A pressure regulating member is arranged on the top plate and cooperates with the pressurizing unit, and is used to adjust the flow rate when the refrigerant is added.

[0005] Preferably, the anti-dumping mechanism includes a guide groove fixed on the top plate, a bidirectional threaded rod is rotatably connected to the guide groove, and a servo motor is fixed to the top plate through a support plate, one end of the output shaft of the servo motor is coaxially fixed to the bidirectional threaded rod, two connecting plates are slidably connected in the guide groove, and the connecting plates are threadedly connected to the bidirectional threaded rod, a clamping ring is slidably sleeved on the connecting plate through a mounting sleeve, and a distance adjusting piece matched with the clamping ring is provided on the mounting sleeve.

[0006] Preferably, the distance adjusting member includes a channel opened on the mounting sleeve, an extrusion block is slidably connected in the channel, and a limiting groove adapted to the extrusion block is opened on the connecting plate, a connecting rod is fixed on the extrusion block, the connecting rod and the mounting sleeve are slidably penetrated, a spring a is sleeved on the outer surface of the connecting rod, one end of the spring a is fixed to the extrusion block, and the other end is fixed to the channel.

[0007] Preferably, the pressurizing unit includes a mounting base fixed on the top plate, a driving motor is fixed on the mounting base, and a shell is fixed on the mounting base, a rotating shaft is coaxially fixed to one end of the output shaft of the driving motor, a supercharger turbine is tightly sleeved on the outer surface of the rotating shaft, and the supercharger turbine is located inside the shell, an installation box is fixed on the top plate, a pressure measuring box is fixed to the installation box through a support plate a, a pressure measuring box is fixed to the pressure measuring box, and a pressure stabilizing box is fixed to the installation box through a support plate b, two ends of the shell are respectively fixed to the pressure measuring box and the pressure stabilizing box through two connecting pipes, a connected pipe a is fixed between the output interface of the refrigerant storage tank and the pressure measuring box, a connected docking pipe is commonly fixed between the pressure measuring box and the pressure stabilizing box, an internally connected pipe b is fixed to the pressure stabilizing box, and a docking clamp is fixed to the pipe b.

[0008] Preferably, the pressure regulating part includes a bracket fixed on the pressure measuring box, an electric push rod is fixed on the bracket, and a through hole for the electric push rod to slide through is opened on the pressure measuring box, a sealing pressure plate is rotatably connected to the pressure measuring box through a rotating rod, a guide groove is fixed on the sealing pressure plate, an additional sleeve is fixed on the output end of the electric push rod, a transmission guide rod is rotatably connected in the additional sleeve, and the transmission guide rod is slidably connected to the guide groove, and a sealing plate adapted to the sealing pressure plate is fixed inside the pressure measuring box.

[0009] Preferably, the pressure measuring box is provided with a sealing assembly adapted to the pressure regulating piece, and the sealing assembly cooperates with the pressurizing unit, the sealing assembly includes a sealing pad slidably connected to the inside of the pressure measuring box, the sealing pad abuts against the sealing pressure plate, a connecting rod is slidably penetrated through the pressure measuring box by a fixed mounting plate, one end of the connecting rod is fixed to the sealing pad, a spring b is sleeved on the connecting rod, two ends of the spring b are respectively fixed to the mounting plate and the sealing pad, a closing plate is fixed on the sealing pad, the closing plate abuts against one end of the connecting pipe, and a vent is provided on the closing plate.

[0010] Preferably, the sealing pressure plate and one side wall of the sealing plate are both arranged with chamfered inclined surfaces, and a sealing gasket is fixed to one side wall of the sealing pressure plate close to the sealing plate, and the sealing gasket abuts against the sealing pressure plate.

[0011] Preferably, a corresponding valve a is provided on the pipeline a, and the valve a is used to adjust the outflow state of the refrigerant storage tank, and a corresponding valve b is provided on the butt-joint pipe, and the valve b is used to adjust the connection state between the pressure measuring box and the pressure stabilizing box.

[0012] Preferably, a plurality of universal wheels are fixed on the load-bearing plate, a support frame is fixed between the load-bearing plate and the top plate, the universal wheels are located directly below the support frame, and a handle is fixed on the top plate.

[0013] Preferably, one side wall of the sealing pressure plate is provided in the form of a smooth arc surface, and one side wall of the sealing gasket close to the sealing pressure plate is provided in the form of a smooth arc surface.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the initial stage of refrigerant filling, the present invention utilizes the negative pressure environment existing in the refrigerant storage tank and the refrigeration system to carry out the filling work. As the refrigerant filling process continues, it is found that the system pressure gradually decreases. At this time, the booster unit will intervene to compensate for the pressure drop by increasing the pressure value during refrigerant filling. This process ensures that the pressure value can be maintained at a constant state during the entire refrigerant filling operation. In this way, not only the safety of the refrigerant filling work is improved, but also the work efficiency is significantly improved, ensuring the smoothness and efficiency of the entire filling process.

[0015] The present invention can accurately adjust the spacing position of the two clamps according to actual operating requirements and conditions through the provision of an anti-dumping mechanism, allowing the clamps to provide necessary support and fixation without directly contacting the refrigerant storage tank. Therefore, during relevant operations, staff must pay special attention to the correct position of the clamp ring to ensure that it maintains a safe distance from the refrigerant storage tank. If the clamp ring accidentally contacts the refrigerant storage tank, this may have an adverse effect on the result of weighing the refrigerant storage tank. Similarly, if the position of the clamp ring is improperly set, it may also interfere with the weighing result, thereby affecting the accuracy of the weighing data.

[0016] The present invention can accurately control the angle between the sealing pressure plate and the sealing plate through the setting of the pressure regulating part, so that the smaller the angle between the sealing pressure plate and the sealing plate, the faster the refrigerant flow rate, and conversely, the larger the angle between the sealing pressure plate and the sealing plate, the slower the refrigerant flow rate. It has the advantage of improving the precise adjustment of the flow rate during refrigerant filling, and relies on the precise adjustment of the electric push rod, so it has higher accuracy than the manual adjustment method. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the anti-dumping mechanism of the present invention; Figure 4 It is a schematic diagram of the side section structure of the guide groove of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 It is a schematic diagram of the side section structure of the installation box of the present invention; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 It is a schematic diagram of the side cross-section structure of the pressure measuring box and the pressure stabilizing box of the present invention; Fig. 9for Figure 8 Enlarged view of point C in the middle; Fig.10 This is a schematic diagram of the structure of the pressurizing component of the present invention; Fig.11 for Fig.10 Enlarged view of point D in the middle; Fig.12 It is a structural schematic diagram of the voltage regulating component of the present invention.

[0018] In the figure: 1. load-bearing plate; 2. refrigerant storage tank; 3. top plate; 4. anti-dumping mechanism; 5. weighing device; 6. pressurizing unit; 7. pressure regulating member; 8. guide groove; 9. bidirectional threaded rod; 10. handle; 11. servo motor; 12. connecting plate; 13. mounting sleeve; 14. clamping ring; 15. distance adjusting member; 16. channel; 17. extrusion block; 18. limit groove; 19. connecting rod; 20. spring a; 21. mounting seat; 22. driving motor; 23. housing; 24. rotating shaft; 25. supercharger turbine; 26. mounting box; 27. pressure measuring box; 28. pressure gauge; 29. Pressure stabilizing box; 30. Connecting pipe; 31. Pipe a; 32. Butt pipe; 33. Pipe b; 34. Butt clamp; 35. Bracket; 36. Electric push rod; 37. Rotating rod; 38. Sealing pressure plate; 39. Sealing pressure plate; 40. Guide groove; 41. Mounting sleeve; 42. Transmission guide rod; 43. Sealing plate; 44. Sealing assembly; 45. Sealing pad; 46. Mounting plate; 47. Connecting rod; 48. Spring b; 49. Closing plate; 50. Vent; 51. Sealing pad; 52. Valve a; 53. Valve b; 54. Universal wheel; 55. Support frame. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] See also Figure 1 - Fig.12, a semi-automatic refrigerant adding device shown in the figure includes a load-bearing plate 1, a refrigerant storage tank 2 is arranged on the load-bearing plate 1, and also includes a top plate 3 installed directly above the load-bearing plate 1, and an anti-dumping mechanism 4 is arranged on the top plate 3, the anti-dumping mechanism 4 is used to prevent the refrigerant storage tank 2 from shaking and dumping when the refrigerant is filled, a weighing device 5 for weighing the refrigerant storage tank 2 is arranged on the load-bearing plate 1, a pressurizing unit 6 is arranged on the top plate 3, the pressurizing unit 6 is used to increase the rate of refrigerant filling, and a pressure regulating member 7 arranged on the top plate 3 and matched with the pressurizing unit 6, the pressure regulating member 7 is used to adjust the flow rate of refrigerant filling; Among them, a plurality of universal wheels 54 are fixed on the load-bearing plate 1. Through the additional plurality of universal wheels 54, it is convenient for the user to move the position of the device, and then it is convenient to move the position of the device to perform refrigerant filling work. A support frame 55 is fixed between the load-bearing plate 1 and the top plate 3, and the universal wheels 54 are located directly below the support frame 55. A handle 10 is fixed on the top plate 3. The additional setting of the handle 10 provides a gripping point for the user when pulling the device; In this scheme, the refrigerant storage tank 2 is placed on the weighing device 5. After the placement is completed, the value on the weighing device 5 is reset to zero. The anti-dumping mechanism 4 provides an anti-dumping effect on the refrigerant storage tank 2 to prevent the refrigerant storage tank 2 from being damaged by dumping due to shaking when filling the refrigerant. The pressurizing component provides a certain pressure value when filling the refrigerant to avoid the situation where the refrigerant flow rate is slow due to too small a pressure difference and affects the filling work efficiency. The pressure regulating component 7 can accurately adjust the flow rate of the refrigerant during filling, and then control the accuracy of the refrigerant filling amount; Specifically, the refrigerant in the refrigerant storage tank 2 is added to the refrigeration system. After the refrigerant storage tank 2 is placed, the value displayed on the scale 5 needs to be reset to zero. This is the initial state. When the refrigerant in the refrigerant storage tank 2 is added to the refrigeration system, the value displayed on the scale 5 becomes a negative value. However, the negative value displayed on the scale 5 is the amount of refrigerant added to the refrigeration system. The specific amount of refrigerant added to the refrigeration system is determined by actual demand.

[0021] Further as Figure 1 , Figure 3 and Figure 4 As shown, it is worth specifically explaining that the anti-dumping mechanism 4 includes a guide groove 8 fixed on the top plate 3, a bidirectional threaded rod 9 is rotatably connected to the guide groove 8, and a servo motor 11 is fixed to the top plate 3 through a support plate 10, one end of the output shaft of the servo motor 11 is coaxially fixed to the bidirectional threaded rod 9, two connecting plates 12 are slidably connected in the guide groove 8, and the connecting plate 12 is threadedly connected to the bidirectional threaded rod 9, a clamping ring 14 is slidably sleeved on the connecting plate 12 through a mounting sleeve 13, and a distance adjusting member 15 adapted to the clamping ring 14 is provided on the mounting sleeve 13; It should be noted that, in actual application, in order to ensure the safety and stability of the refrigerant storage tank 2 and prevent it from accidentally tipping over, a clamping ring 14 is used as a protective measure. The original intention of the design of the clamping ring 14 is to provide necessary support and fixation without direct contact with the refrigerant storage tank 2. Therefore, during operation, the staff needs to pay special attention to the correct position of the clamping ring 14 to ensure that it maintains a certain safety distance from the refrigerant storage tank 2. If the clamping ring 14 contacts the refrigerant storage tank 2, it may affect the result of the refrigerant storage tank 2 when the weight is measured. Improper position of the clamping ring 14 may also interfere with the weight measurement result, thereby affecting the accuracy of the measurement data. The position of the clamping ring 14 is accurately adjusted by the servo motor 11 to ensure that the position of the clamping ring 14 is correctly adjusted to ensure that it can effectively prevent the refrigerant storage tank 2 from tipping over without causing any negative impact on the storage tank itself. The principle of the anti-dumping mechanism 4 preventing the refrigerant storage tank 2 from tipping over is as follows: first, the refrigerant storage tank 2 is placed on the weighing device 5, and the bidirectional threaded rod 9 is driven by the servo motor 11 to rotate synchronously, and the threaded transmission effect between the bidirectional threaded rod 9 and the connecting plate 12 is utilized to make the connecting plate 12 move linearly along the guide groove 8 after being stressed, driving the clamping ring 14 to move synchronously, until the two clamping rings 14 are located outside the refrigerant storage tank 2, thereby forming an anti-dumping protection state for the refrigerant storage tank 2, and effectively preventing the refrigerant storage tank 2 from tipping over and being damaged when filling the refrigerant; Specifically, the distance adjusting member 15 includes a channel 16 provided on the mounting sleeve 13, an extrusion block 17 is slidably connected in the channel 16, and a limiting groove 18 adapted to the extrusion block 17 is provided on the connecting plate 12, a connecting rod 19 is fixed on the extrusion block 17, the connecting rod 19 and the mounting sleeve 13 are slidably arranged, and a spring a20 is sleeved on the outer surface of the connecting rod 19, one end of the spring a20 is fixed to the extrusion block 17, and the other end is fixed to the channel 16; It should be noted that the top surface of the extrusion block 17 is arranged in a chamfered inclined surface, so that when adjusting the position of the clamping ring 14 upward, it is more labor-saving. The clamping ring 14 can be pushed upward by only slightly pulling the pull ring. When pushing the clamping ring 14 upward, the extrusion block 17 and the inclined surface in the limiting groove 18 are matched, and the extrusion block 17 moves into the channel 16 after being subjected to force; The principle of using the distance adjusting member 15 to adjust the height position of the clamping ring 14 is as follows: by pulling the pull ring, the connecting rod 19 is moved synchronously, and then the extrusion block 17 is driven to move synchronously, until the extrusion block 17 is separated from the limiting groove 18, and then the limiting state of the clamping ring 14 is released, and the height position of the clamping ring 14 can be manually adjusted until the height position of the clamping ring 14 is adjusted to a suitable position. After completing the height position adjustment of the clamping ring 14, the pulling force on the pull ring is released, and the elastic effect of the spring is used to make the extrusion block 17 engage into the limiting groove 18 along the channel 16 after being subjected to force, thereby completing the limiting purpose of the clamping ring 14.

[0022] Embodiment 2: Based on Embodiment 1, according to Figure 1 , Figure 6 and Fig.11 As shown, it is worth specifically explaining that the pressurizing unit 6 includes a mounting base 21 fixed on the top plate 3, a driving motor 22 is fixed on the mounting base 21, and a housing 23 is fixed on the mounting base 21, a rotating shaft 24 is coaxially fixed to one end of the output shaft of the driving motor 22, a supercharger turbine 25 is tightly sleeved on the outer surface of the rotating shaft 24, and the supercharger turbine 25 is located inside the housing 23, a mounting box 26 is fixed on the top plate 3, a pressure measuring box 27 is fixed on the mounting box 26 through a support plate, a pressure gauge 28 is fixed on the pressure measuring box 27, and a pressure stabilizing box 29 is fixed on the mounting box 26 through a support plate, and two ends of the housing 23 are connected respectively by two The pipe 30 is fixed to the pressure measuring box 27 and the pressure stabilizing box 29. A connected pipe a31 is fixed between the output interface of the refrigerant storage tank 2 and the pressure measuring box 27. A matching valve a52 is provided on the pipe a31, and the valve a52 is used to adjust the outflow state of the refrigerant storage tank 2. A connected butt pipe 32 is fixed between the pressure measuring box 27 and the pressure stabilizing box 29. A matching valve b53 is provided on the butt pipe 32. The valve b53 is used to adjust the connection state between the pressure measuring box 27 and the pressure stabilizing box 29. An internally connected pipe b33 is fixed on the pressure stabilizing box 29, and a butt clamp 34 is fixed on the pipe b33. It should be noted that when the pressure value in the refrigerant storage tank 2 drops, the driving motor 22 intervenes to drive the rotating shaft 24 to rotate, driving the supercharger turbine 25 to operate synchronously, and the refrigerant in the pressure measuring box 27 is pressurized and input into the pressure stabilizing box 29, which can effectively solve the problem of low refrigerant filling rate caused by too small pressure value, and greatly improve the pressure environment during refrigerant filling. It should also be noted that the refrigerant is input into the pressure stabilizing tank 29 through the butt joint 32, and the space in the pressure stabilizing tank 29 provides a buffer before the refrigerant is added, which not only does not affect the normal filling speed, but also ensures that the refrigerant is added to the refrigeration system at a stable pressure; Specifically, the pressure regulating member 7 includes a bracket 35 fixed on the pressure measuring box 27, an electric push rod 36 is fixed on the bracket 35, and a through hole 37 is opened on the pressure measuring box 27 for the electric push rod 36 to slide through, a sealing pressure plate 39 is rotatably connected to the pressure measuring box 27 through a rotating rod 38, and a side wall of the sealing pressure plate 39 is set in a smooth arc surface, and a guide groove 40 is fixed on the sealing pressure plate 39, and an additional sleeve 41 is fixed on the output end of the electric push rod 36, and a transmission guide rod 42 is rotatably connected in the additional sleeve 41, and the transmission guide rod 42 is slidably connected to the guide groove 40, and a sealing plate 43 adapted to the sealing pressure plate 39 is fixed inside the pressure measuring box 27; The principle of regulating the flow rate of the refrigerant during filling by the pressure regulating member 7 is as follows: when the sealing pressure plate 39 and the sealing plate 43 are in a tightly fitting contact state, the pressure measuring box 27 is in a closed state, and the electric push rod 36 drives the installation sleeve 41 to move, so that the transmission guide rod 42 slides along the guide groove 40 after being stressed, and then causes the sealing pressure plate 39 to flip along the axis of the rotating rod 38 after being stressed, so that the angle between the sealing pressure plate 39 and the sealing plate 43 can be accurately controlled, so that the smaller the angle between the sealing pressure plate 39 and the sealing plate 43, the faster the refrigerant flow rate, on the contrary, the larger the angle between the sealing pressure plate 39 and the sealing plate 43, the slower the refrigerant flow rate, which has the advantage of improving the accurate adjustment of the flow rate during refrigerant filling, and relying on the accurate adjustment of the electric push rod 36, the accuracy is higher than that of the manual adjustment method; It should also be noted that, first, the refrigerant is added to the refrigeration system by using the pressure in the refrigerant storage tank 2. At this time, the refrigeration system is under negative pressure, and the refrigerant in the refrigerant storage tank 2 is added to the refrigeration system by using the negative pressure. When the pressure in the refrigerant storage tank 2 gradually decreases, the pressure of the refrigerant is increased by the pressurizing component. Specifically, a sealing assembly 44 adapted to the pressure regulating member 7 is provided on the pressure measuring box 27, and the sealing assembly 44 cooperates with the pressurizing unit 6, and the sealing assembly 44 includes a sealing pad 45 slidably connected to the inside of the pressure measuring box 27, and a sealing pad 51 is provided on a side wall close to the sealing pressure plate 39 and is provided with a smooth arc surface, and the length of the sealing pad 51 is consistent with the length of the sealing pressure plate 39, and the sealing pad 45 abuts against the sealing pressure plate 39, and a connecting rod 47 is slidably penetrated and connected in the pressure measuring box 27 through a fixed mounting plate 46, and one end of the connecting rod 47 is fixed to the sealing pad 45, and a spring b48 is sleeved on the connecting rod 47, and the two ends of the spring b48 are respectively fixed to the mounting plate 46 and the sealing pad 45, and a closing plate 49 is fixed on the sealing pad 45, and the closing plate 49 abuts against one end of the connecting pipe 30, and a vent hole 50 is opened on the closing plate 49; By utilizing the elastic effect of the spring b48, the sealing pad 45 can always be in close contact with the sealing pressure plate 39, thereby avoiding the situation where the pressure is unstable due to the gap between the sealing pressure plate 39 and the pressure measuring box 27 during movement, thereby improving the pressure stability in the pressure measuring box 27; In addition, the bottom surface of the closing plate 49 is in contact with the end surface of the connecting tube 30. When the sealing pressure plate 39 is in contact with the sealing plate 43, the sealing pressure plate 39 and the pressure measuring box 27 are in a vertical state. At this time, the closing plate 49 is in a contact and closed state with the end surface of the connecting tube 30. Example

[0023] See also Figure 1 - Fig.12 , this embodiment further illustrates other embodiments, the difference is that the smoothness between the sealing plate 39 and the pressure measuring box 27 is optimized; Specifically, one side wall of the sealing plate 39 and the sealing plate 43 are both chamfered, and a sealing gasket 51 is fixed to one side wall of the sealing plate 39 close to the sealing plate 43. The sealing gasket 51 abuts against the sealing plate 39. The soft material of the sealing gasket 51 ensures that when the sealing plate 39 is in close contact with the sealing plate 43, the sealing effect between the sealing plate 39 and the sealing plate 43 can be significantly improved. In addition, the chamfered surfaces of the sealing pressure plate 39 and the sealing plate 43 effectively ensure the sealing performance of the sealing pressure plate 39 when it is tightly fitted with the sealing plate 43, thereby avoiding pressure leakage during pressure measurement.

[0024] The principle of adding refrigerant to the refrigeration system in this solution is: First, place the refrigerant storage tank 2 on the weighing device 5, try to keep the position of the refrigerant storage tank 2 in the center, adjust the clamp position through the anti-dumping mechanism 4, and adjust the clamp position to a suitable position to prevent the refrigerant storage tank 2 from tipping over and being damaged when filling the refrigerant. After completing the above steps, reset the weighing device 5 to zero, and complete the docking of the pipe a31 and the joint of the refrigerant storage tank 2; Secondly, open valve a52, so that the refrigerant in the refrigerant storage tank 2 flows into the pressure measuring box 27 through the pipeline a31, and observe the value on the pressure gauge 28, so that the refrigerant pressure value in the pressure measuring box 27 can be observed intuitively and clearly. After the refrigerant pressure value in the pressure measuring box 27 is observed, the docking clamp 34 is connected to the refrigerant system, and the pressure value when the refrigerant is added is adjusted according to the actual demand through the driving of the pressure regulating component 7, and the valve b53 is opened, so that the refrigerant in the pressure measuring box 27 flows into the pressure stabilizing box 29, so that the refrigerant in the pressure stabilizing box 29 enters the refrigeration system; Then, when the pressure value in the refrigerant storage tank 2 drops, the closed state of the pressurizing unit 6 is released by driving the pressure regulating component 7, and the refrigerant in the pressure measuring box 27 is pressurized by the pressurizing component, causing the refrigerant in the pressure measuring box 27 to be transported to the pressure stabilizing tank 29 through the connecting pipe 30. After the refrigerant enters the pressure stabilizing tank 29 and stays there for a short time, it is transported to the refrigeration system through the pipeline b33.

[0025] Both the servo motor 11 and the drive motor 22 can be purchased from the market and equipped with a separate power supply, which is a mature technology in this field and has been fully disclosed, so they will not be repeated in the specification.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-automatic refrigerant adding device, comprising: A load-bearing plate (1), wherein a refrigerant storage tank (2) is arranged on the load-bearing plate (1); It is characterized by further comprising: A top plate (3) is installed directly above the load-bearing plate (1), and an anti-dumping mechanism (4) is provided on the top plate (3), and the anti-dumping mechanism (4) is used to prevent the refrigerant storage tank (2) from shaking and tipping when the refrigerant is filled, a weighing device (5) is provided on the load-bearing plate (1) for measuring the weight of the refrigerant storage tank (2), a pressurizing unit (6) is provided on the top plate (3), and the pressurizing unit (6) is used to increase the rate of refrigerant filling, and; A pressure regulating component (7) is arranged on the top plate (3) and cooperates with the pressurizing unit (6), wherein the pressure regulating component (7) is used to adjust the flow rate when the refrigerant is added.

2. A semi-automatic refrigerant adding device according to claim 1, characterized in that: The anti-dumping mechanism (4) comprises a guide groove (8) fixed on the top plate (3), a bidirectional threaded rod (9) being rotatably connected to the guide groove (8), and a servo motor (11) being fixed to the top plate (3) via a support plate, one end of an output shaft of the servo motor (11) being coaxially fixed to the bidirectional threaded rod (9), two connecting plates (12) being slidably connected in the guide groove (8), and the connecting plates (12) being threadably connected to the bidirectional threaded rod (9), a clamping ring (14) being slidably sleeved on the connecting plate (12) via a mounting sleeve (13), and a distance adjusting member (15) matching the clamping ring (14) being provided on the mounting sleeve (13).

3. A semi-automatic refrigerant adding device according to claim 2, characterized in that: The distance adjusting member (15) comprises a channel (16) formed on the mounting sleeve (13), an extrusion block (17) being slidably connected in the channel (16), and a limiting groove (18) adapted to the extrusion block (17) is formed on the connecting plate (12), a connecting rod (19) is fixed on the extrusion block (17), the connecting rod (19) and the mounting sleeve (13) are slidably intersected, a spring a (20) is sleeved on the outer surface of the connecting rod (19), one end of the spring a (20) is fixed to the extrusion block (17), and the other end is fixed to the channel (16).

4. A semi-automatic refrigerant adding device according to claim 1, characterized in that: The pressurizing unit (6) comprises a mounting seat (21) fixed on the top plate (3), a driving motor (22) being fixed on the mounting seat (21), and a housing (23) being fixed on the mounting seat (21), a rotating shaft (24) being coaxially fixed to one end of the output shaft of the driving motor (22), a supercharger turbine (25) being sleeved on the outer surface of the rotating shaft (24), and the supercharger turbine (25) being located inside the housing (23), a mounting box (26) being fixed on the top plate (3), a pressure measuring box (27) being fixed on the mounting box (26) via a support plate, and a pressure gauge being fixed on the pressure measuring box (27) (28), and a pressure stabilizing box (29) is fixed to the installation box (26) via a support plate, and the two ends of the shell (23) are fixed to the pressure measuring box (27) and the pressure stabilizing box (29) via two connecting pipes (30), respectively, a connecting pipe a (31) is fixed between the output interface of the refrigerant storage tank (2) and the pressure measuring box (27), a connecting butt pipe (32) is fixed between the pressure measuring box (27) and the pressure stabilizing box (29), an internally connected pipe b (33) is fixed to the pressure stabilizing box (29), and a butt clamp (34) is fixed to the pipe b (33).

5. A semi-automatic refrigerant adding device according to claim 4, characterized in that: The pressure regulating member (7) comprises a bracket (35) fixed on a pressure measuring box (27), an electric push rod (36) being fixed on the bracket (35), and a through hole (37) for the electric push rod (36) to slide through is provided on the pressure measuring box (27), a sealing pressure plate (39) is rotatably connected to the pressure measuring box (27) via a rotating rod (38), a guide groove (40) is fixed to the sealing pressure plate (39), an additional sleeve (41) is fixed to the output end of the electric push rod (36), a transmission guide rod (42) is rotatably connected to the additional sleeve (41), and the transmission guide rod (42) is slidably connected to the guide groove (40), and a sealing plate (43) adapted to the sealing pressure plate (39) is fixed inside the pressure measuring box (27).

6. A semi-automatic refrigerant adding device according to claim 5, characterized in that: The pressure measuring box (27) is provided with a sealing assembly (44) adapted to the pressure regulating member (7), and the sealing assembly (44) cooperates with the pressurizing unit (6). The sealing assembly (44) includes a sealing pad (45) slidably connected to the inside of the pressure measuring box (27), and the sealing pad (45) abuts against the sealing pressure plate (39). A connecting rod (47) is slidably penetrated and connected to the inside of the pressure measuring box (27) via a fixed mounting plate (46), and one end of the connecting rod (47) is fixed to the sealing pad (45). A spring b (48) is sleeved on the connecting rod (47), and two ends of the spring b (48) are respectively fixed to the mounting plate (46) and the sealing pad (45). A closing plate (49) is fixed to the sealing pad (45), and the closing plate (49) abuts against one end of the connecting pipe (30), and a vent hole (50) is opened on the closing plate (49).

7. The semi-automatic refrigerant adding device according to claim 5, characterized in that: One side wall of the sealing pressure plate (39) and the sealing plate (43) are both arranged in the form of chamfered inclined surfaces, and a sealing gasket (51) is fixed to a side wall of the sealing pressure plate (39) close to the sealing plate (43), and the sealing gasket (51) abuts against the sealing pressure plate (39).

8. The semi-automatic refrigerant adding device according to claim 4, characterized in that: The pipeline a (31) is provided with a corresponding valve a (52), and the valve a (52) is used to adjust the outflow state of the refrigerant storage tank (2). The butt-joint pipe (32) is provided with a corresponding valve b (53), and the valve b (53) is used to adjust the connection state between the pressure measuring box (27) and the pressure stabilizing box (29).

9. The semi-automatic refrigerant adding device according to claim 1, characterized in that: A plurality of universal wheels (54) are fixed on the load-bearing plate (1), a support frame (55) is fixed between the load-bearing plate (1) and the top plate (3), and the universal wheels (54) are located directly below the support frame (55), and a handle (10) is fixed on the top plate (3).

10. The semi-automatic refrigerant adding device according to claim 7, characterized in that: One side wall of the sealing pressure plate (39) is provided in the form of a smooth arc surface, and one side wall of the sealing gasket (51) close to the sealing pressure plate (39) is provided in the form of a smooth arc surface.

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