Air energy refrigerant filling pipeline connecting device and refrigerant filling equipment and method

Abstract

The invention belongs to the technical field of refrigeration equipment, particularly relates to an air energy refrigerant filling pipeline connecting device and refrigerant filling equipment and method, and aims to solve the problems that in the prior art, when a refrigerant medium is filled, the utilization rate of the refrigerant is reduced, and when a conveying pipeline is connected with an air inlet pipe of an air energy cooling and heating all-in-one machine, the conveying pipeline is not connected with the air inlet pipe of the air energy cooling and heating all-in-one machine. The connecting device comprises a refrigerant storage tank and a bottom frame, an opening and closing valve is installed on the refrigerant storage tank, a butt joint pipe is installed on the opening and closing valve, and a rubber sealing ring is fixedly installed in the butt joint pipe in a sealed mode. According to the air energy cooling and heating all-in-one machine, the driving motor can be started to continuously pressurize and convey a refrigerant medium, so that the problem of waste of the refrigerant medium can be avoided, and when the air energy cooling and heating all-in-one machine is in butt joint with an air inlet pipe of the air energy cooling and heating all-in-one machine, stable connection can be achieved in a clamping mode, and leakage cannot occur when the refrigerant medium is conveyed.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to an air energy refrigerant filling pipeline connection device and a refrigerant filling device and method. Background Art

[0002] The characteristics of air-to-cooler include energy saving, power saving, safety, and comfort. It can not only provide comfortable heating in winter, but also provide cooling in summer. This type of equipment usually uses a water system for heating and cooling, which effectively avoids the occurrence of air-conditioning disease, and does not produce harmful gases during operation, meeting environmental protection requirements.

[0003] In the production process of air-energy cooling and heating integrated machine, the injection of refrigerant is a key link. At present, the refrigerant pipe joint of the refrigerant injection machine is usually connected to the connecting copper pipes of the inner and outer units of the air-energy cooling and heating integrated machine through pipe joints of corresponding calibers.

[0004] However, the existing technology still has some shortcomings when performing refrigerant perfusion:

[0005] 1. In the process of filling the refrigerant, the refrigerant mainly relies on the high pressure in the refrigerant storage tank for transportation. However, when the air pressure in the storage tank is insufficient, the refrigerant transportation efficiency will be reduced, and it may even cause part of the refrigerant in the tank to be unable to be output, resulting in a waste of refrigerant.

[0006] 2. At present, the threaded connection is mostly used when the filling pipeline is connected to the air intake pipe of the air-cooling and heating machine. This method requires a wrench to tighten the nut, but it is difficult to ensure the tightness of the connection by relying solely on manual experience, which is easy to cause refrigerant leakage.

[0007] In view of the above problems, the present invention document proposes an air-energy refrigerant injection pipeline connection device and a refrigerant injection equipment and method. Summary of the invention

[0008] The present invention provides an air-energy refrigerant filling pipeline connection device and a refrigerant filling equipment and method, which solves the shortcomings of the prior art that the utilization rate of the refrigerant is reduced when the refrigerant is filled and the refrigerant is easily leaked when the delivery pipeline is connected to the air inlet pipe of the air-energy cooling and heating integrated machine.

[0009] The present invention provides the following technical solutions:

[0010] An air energy refrigerant perfusion pipeline connection device includes a refrigerant storage tank and a base frame, an on-off valve is installed on the refrigerant storage tank, a butt pipe is installed on the on-off valve, a rubber sealing ring is fixedly installed in the butt pipe, support rods are fixedly installed at the top four corners of the base frame, and the tops of the four support rods are fixedly installed with the same mounting frame, and the connection device also includes:

[0011] The conveying mechanism is installed in the mounting frame, one side of the conveying mechanism extends to the outside of the mounting frame, and the conveying mechanism is used to pump the cold medium;

[0012] A positioning mechanism, the positioning mechanism is installed on the mounting frame, one side of the positioning mechanism extends to one side of the mounting frame, an air intake pipe is clamped on the positioning mechanism, a card cover is fixedly installed at one end of the air intake pipe, and the card cover is connected to the conveying mechanism;

[0013] The pipeline mechanism is connected to the conveying mechanism, one side of the pipeline mechanism extends to the other side of the mounting frame and is clamped with the docking pipe, and the pipeline mechanism is used to convey the refrigerant medium in the refrigerant storage tank.

[0014] In one possible design, the conveying mechanism includes a diverter box fixedly installed in a mounting frame, two pumping assemblies are symmetrically installed on the inner wall of one side of the diverter box, one end of the two pumping assemblies extends to one side of the mounting frame and is connected to the same U-shaped tube, an exhaust pipe is fixedly installed on the inner wall of one side of the U-shaped tube, one end of the exhaust pipe extends into the card cover and is clamped with the inner wall of the card cover, and a positioning mechanism is used to limit the card cover so that the card cover and the exhaust pipe are tightly connected, a power assembly is installed at the bottom of the mounting frame, the power assembly is respectively connected to the two pumping assemblies, an air supply pipe is fixedly installed on the bottom inner wall of the diverter box, a check valve is fixedly installed on one end of the air supply pipe, one side of the check valve extends into the U-shaped tube and is fixedly connected to the bottom inner wall of the U-shaped tube, one end of the pipeline mechanism extends into the diverter box and is connected to the other inner wall of the diverter box, and a pressure gauge is fixedly installed on the top of the U-shaped tube.

[0015] In a possible design, the pumping assembly includes a mounting tube fixedly mounted on the inner wall of one side of the shunt box, a power tube is tightly slidably sleeved on the mounting tube, the power tube is connected to the power assembly, a cannula is fixedly mounted on one end of the power tube, a support tube is tightly slidably sleeved on the cannula, the support tube passes through the inner wall of one side of the mounting frame and extends to the outside of the mounting frame, the support tube is fixedly connected to the inner wall of one side of the mounting frame, and one end of the support tube is fixedly connected to one end of the U-shaped tube;

[0016] A fixed sleeve is fixedly installed in the installation tube and the power tube, a moving rod is slidably connected in the fixed sleeve, a spherical plate is fixedly installed at one end of the moving rod, the spherical plate is used to seal the fixed sleeve, a first compression spring is sleeved on the moving rod, and two ends of the first compression spring are fixedly connected to the other end of the moving rod and one side of the fixed sleeve respectively.

[0017] In one possible design, the power assembly includes a driving motor fixedly mounted on one side of the bottom of the mounting frame, a rectangular frame fixedly mounted on the bottom of the power tube, a slide plate slidably connected inside the rectangular frame, a curved rod fixedly mounted on the output shaft of the driving motor, one end of the curved rod respectively passes through the two slide plates and is rotatably connected to the other side of the bottom of the mounting frame, and the curved rod is rotatably connected to the two slide plates.

[0018] In a possible design, the positioning mechanism includes support rings fixedly mounted on both sides of the mounting frame, transmission rods are slidably connected through the support rings, one end of the two transmission rods extends to one side of the mounting frame and is fixedly mounted with the same limiting plate, a bayonet is provided at the top center of the limiting plate, the exhaust pipe passes through the bayonet, the limiting plate contacts one side of the card cover, sliding holes are provided on the inner walls of both sides of the mounting frame, a moving plate is slidably connected through the sliding holes, one side of the moving plate extends to the outside of the mounting frame, and the other end of the transmission rod is fixedly connected to the top of the corresponding moving plate;

[0019] A clamping assembly is installed on the top of the mounting frame, and two sides of the clamping assembly extend to two sides of the mounting frame and are respectively connected to the tops of the two moving plates.

[0020] In a possible design, the clamping assembly includes a support shaft rotatably connected to one side of the top of the mounting frame, swing arms are fixedly installed at both ends of the support shaft, and the same positioning rod is fixedly installed on the side where the two swing arms are close to each other, and two support covers are symmetrically fixedly installed on the top of the mounting frame, and an arc-shaped clamping plate is slidably connected inside the support cover, and the top of the arc-shaped clamping plate extends to the top of the support cover, and the top of the arc-shaped clamping plate is an arc-shaped curved surface, and a positioning hole is opened on the top of one side of the arc-shaped clamping plate, and the positioning rods respectively pass through the two positioning holes and are clamped with the two positioning holes respectively;

[0021] A transmission ring is rotatably connected to the two swing arms at the sides away from each other, a transmission plate is slidably connected through the transmission ring, and the bottom of the transmission plate is fixedly connected to the top of the corresponding moving plate;

[0022] A limiting rod is fixedly installed on the other side of the arc-shaped clamping plate, a limiting tube is slidably sleeved on the limiting rod, one end of the limiting tube is fixedly connected to the top of the mounting frame, and a second compression spring located on one side of the limiting tube is sleeved on the limiting rod, and both ends of the second compression spring are respectively fixedly connected to the other end of the limiting tube and the other side of the arc-shaped clamping plate.

[0023] In a possible design, the pipeline mechanism includes a delivery pipe fixedly installed on the inner wall of the other side of the shunt box, a protective pipe fixedly installed on the other side of the mounting frame, a heat insulation sleeve fixedly installed in the protective pipe, one end of the delivery pipe passes through the heat insulation sleeve and is fixedly connected to the inner wall of the heat insulation sleeve, one end of the delivery pipe and one end of the protective pipe are fixedly installed with the same connecting ring, a threaded pipe connected to the delivery pipe is rotatably connected in the connecting ring, one end of the threaded pipe extends to the outside of the connecting ring and is fixedly installed with a docking joint, one end of the docking joint extends into the rubber sealing ring and is tightly fitted with the inner wall of the rubber sealing ring, and a nut is provided on the threaded sleeve of the threaded pipe;

[0024] The nut is connected with a mounting assembly, a fixing sleeve on the butt joint pipe is provided with a supporting retaining ring, and the mounting assembly and the supporting retaining ring are clamped together so that the butt joint and the rubber sealing ring are tightly plugged.

[0025] In a possible design, the mounting assembly includes a fixing plate fixedly mounted on one side of the nut, a threaded tube passing through the fixing plate, mounting rods fixedly mounted on both sides of the fixing plate, a U-shaped limit plate fixedly mounted on one end of the two mounting rods, the U-shaped limit plate is sleeved on the butt-jointed tube, the U-shaped limit plate is in contact with a side of a support retaining ring close to the opening and closing valve, the same elastic clip is fixedly mounted on the two mounting rods, the elastic clip is movably mounted on the butt-jointed tube, and the elastic clip is in contact with a side of the support retaining ring away from the opening and closing valve.

[0026] A refrigerant filling device is manufactured by the above-mentioned air energy refrigerant filling pipeline connecting device.

[0027] A method for using an air energy refrigerant injection pipeline connection device comprises the following steps:

[0028] S1: Connection between butt pipe and sealing ring

[0029] First, mount the U-shaped limit plate on the butt joint pipe, and then mount the butt joint pipe with the elastic buckle that moves with the mounting rod. The U-shaped limit plate and the elastic buckle are located on both sides of the support ring and contact with it to achieve the lateral limit of the mounting rod. By rotating the threaded tube and the threaded transmission of the nut, the threaded tube moves horizontally and the butt joint is tightly inserted into the rubber sealing ring.

[0030] S2: Connection between positioning cover and exhaust pipe

[0031] Push the positioning rod to drive the swing arm to rotate around the support shaft, thereby driving the transmission ring to move in an arc. Through the cooperation of the transmission plate, the moving plate and the transmission rod move accordingly, so that the limiting plate moves closer to the mounting frame. When the positioning rod contacts the arc surface of the arc-shaped card plate, it pushes the arc-shaped card plate to move horizontally, compressing the second compression spring. When the positioning rod is aligned with the positioning port, the limiting plate presses the card cover, and the second compression spring pushes the arc-shaped card plate in the opposite direction, so that the positioning rod is stuck in the positioning port, stabilizing the connection between the limit card cover and the exhaust pipe.

[0032] S3: Transportation of cold media

[0033] Open the on-off valve, and the refrigerant in the refrigerant storage tank flows through the butt joint, butt joint, threaded pipe, and delivery pipe to the diversion box. Under the action of the air delivery pipe, the refrigerant is transported to the U-shaped pipe, then enters the air intake pipe through the exhaust pipe, and finally reaches the air energy cooling and heating machine.

[0034] S4: Refrigerant pressure boosting and transportation when air pressure is insufficient

[0035] If the air pressure in the refrigerant storage tank is insufficient, the drive motor is started to rotate the curved rod, driving the power tube to alternately move horizontally back and forth. When the power tube approaches the support tube, suction is generated inside it, causing the spherical plate in the installation tube to separate from the fixed sleeve under the action of air pressure, and the refrigerant flows into the power tube. Conversely, when the power tube approaches the installation tube, pressure is applied to the spherical plate to separate it from the fixed sleeve, and the refrigerant enters the support tube through the insert tube, and is finally transported to the intake pipe through the U-tube and the exhaust pipe, pressurizing and filling the air energy cooling and heating machine with refrigerant.

[0036] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] In the present invention, through the provided conveying mechanism, the refrigerant in the refrigerant storage tank can be conveyed to the diverter box through the pipeline mechanism under normal conditions, that is, the refrigerant can be conveyed to the U-shaped tube under the output of the gas transmission pipe, and then the refrigerant can be conveyed to the intake pipe through the exhaust pipe, and then the refrigerant is conveyed to the air energy cooling and heating integrated machine through the intake pipe. When the air pressure in the refrigerant storage tank is insufficient, the power component can be started to drive the two pumping components to move, the refrigerant in the refrigerant storage tank can be extracted, and conveyed to the U-shaped tube, and then the refrigerant can be conveyed to the air energy cooling and heating integrated machine at a constant pressure, so when the air pressure in the refrigerant storage tank is insufficient, it will not affect the perfusion of the refrigerant;

[0039] When the two levers are in a position corresponding to the two positioning holes, the limit plate can be pushed and the two second compression springs can be pressed and limited to the card cover, and the two second compression springs under stress can push the two arc card covers to move in the opposite direction, so that the positioning rods are respectively clamped and installed with the two positioning holes, so that when the exhaust pipe and the card cover are connected, the card cover can be stably limited to keep the card cover stably connected to the exhaust pipe, so that when the refrigerant is poured, there will be no leakage.

[0040] In the present invention, through the provided pipeline mechanism, after the installation assembly is clamped on the support retaining ring, the rotatable threaded tube can be moved laterally under the threaded transmission action of the nut, so that the docking joint can be inserted into the rubber sealing ring, so that the docking joint is in close contact with the inner wall of the rubber sealing ring. Therefore, after the on-off valve is opened, the refrigerant in the refrigerant storage tank can be transported to the diversion box through the docking tube, the docking joint, the threaded tube and the delivery pipe, and an insulating sleeve is provided in the protective tube, which can prevent the temperature change of the refrigerant when the refrigerant is transported.

[0041] When the air pressure in the refrigerant storage tank is insufficient, the present invention can start the drive motor to continuously pressurize and transport the refrigerant, thereby avoiding the problem of refrigerant waste. When docking with the air intake pipe of the air-to-air heating and cooling machine, a stable connection can be achieved through a card-fitting form, so that no leakage will occur when the refrigerant is transported. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A three-dimensional schematic diagram of the overall structure of the air-energy refrigerant injection pipeline connection device provided in an embodiment of the present invention;

[0043] Figure 2 A three-dimensional schematic diagram of the on-off valve, butt pipe and rubber sealing ring structure of the air energy refrigerant injection pipeline connection device provided in an embodiment of the present invention;

[0044] Figure 3 A three-dimensional schematic diagram of the connection structure of the mounting frame, the protective pipe, the threaded pipe and the butt joint of the air energy refrigerant injection pipeline connection device provided in an embodiment of the present invention;

[0045] Figure 4A three-dimensional schematic diagram of the connection structure of the protective pipe, the heat insulating sleeve, the delivery pipe, the threaded pipe, the fixing plate, the two mounting rods and the U-shaped card plate of the air energy refrigerant injection pipeline connection device provided in an embodiment of the present invention;

[0046] Figure 5 A three-dimensional schematic diagram of a mounting frame, a shunt box, two mounting pipes, two power pipes and a U-shaped pipe connection structure of an air-energy refrigerant injection pipeline connection device provided in an embodiment of the present invention;

[0047] Figure 6 A bottom-up three-dimensional schematic diagram of a base frame, a plurality of support rods, a mounting frame, a limiting plate and a U-shaped pipe connection structure of an air-energy refrigerant perfusion pipeline connection device provided in an embodiment of the present invention;

[0048] Figure 7 A three-dimensional schematic diagram of a shunt box, two mounting tubes, two power tubes, a drive motor, a curved rod, two rectangular rings, two support tubes and a U-shaped tube connection structure of an air-energy refrigerant perfusion pipeline connection device provided in an embodiment of the present invention;

[0049] Figure 8 A three-dimensional schematic diagram of the cross-sectional structure of the installation pipe, power pipe and inserting pipe of the air energy refrigerant injection pipeline connection device provided in an embodiment of the present invention;

[0050] Fig. 9 A three-dimensional schematic diagram of the connection structure of two transmission rods, two swing arms and a support shaft of the air energy refrigerant injection pipeline connection device provided in an embodiment of the present invention.

[0051] Reference numerals:

[0052] 1. Refrigerant storage tank; 2. Open and close valve; 3. Butt pipe; 4. Rubber sealing ring; 5. Base frame; 6. Support rod; 7. Mounting frame; 8. Diverter box; 9. Protective pipe; 901, Insulation sleeve; 10. Delivery pipe; 11. Connecting ring; 12. Threaded pipe; 13. Butt joint; 14. Fixing plate; 15. Nut; 16. Mounting rod; 17. U-shaped limit plate; 18. Elastic buckle; 19. Gas pipe; 20. Mounting pipe; 21. Power pipe; 22. Insertion pipe; 23. Support pipe; 24. U-shaped pipe; 25. Exhaust pipe; 26. Pressure gauge; 27. Card cover; 28. Intake pipe; 29. ​​Fixed sleeve; 30. Moving rod; 31. Spherical plate; 32. First compression spring; 33. Rectangular frame; 34. Driving motor; 35. Curved rod; 36. Slide plate; 37. Support ring; 38. Transmission rod; 39. Limiting plate; 40. Bayonet; 41. Moving plate; 42. Transmission plate; 43. Support shaft; 44. Swing arm; 45. Positioning rod; 46. Support cover; 47. Transmission ring; 48. Arc card plate; 49. Limiting tube; 50. Limiting rod; 51. Second compression spring; 52. Check valve. DETAILED DESCRIPTION

[0053] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0054] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0055] Example 1

[0056] Reference Figure 1-Figure 9 The air-energy refrigerant filling pipeline connection device of this embodiment includes a refrigerant storage tank 1, an opening and closing valve 2, a butt pipe 3, a rubber sealing ring 4, a base frame 5, a support rod 6, a mounting frame 7, a conveying mechanism, a positioning mechanism and a pipeline mechanism.

[0057] Refrigerant storage tank 1: used to store refrigerant medium, on which an on-off valve 2 is installed to control the outflow of the refrigerant.

[0058] On-off valve 2: installed on the refrigerant storage tank 1, the flow of the refrigerant can be controlled by operating the on-off valve 2.

[0059] Butt pipe 3: installed on the on-off valve 2, used to connect the pipeline mechanism to achieve the transmission of the refrigerant. A rubber sealing ring 4 is fixedly installed in the butt pipe 3 to ensure the sealing of the connection.

[0060] The base frame 5 is used as the supporting structure of the entire device, and support rods 6 are fixedly installed at the four corners of the top.

[0061] Support rods 6: There are four in total, which are fixed at the four corners of the top of the base frame 5 respectively, and the top of each support rod is fixedly mounted with a mounting frame 7 for mounting a conveying mechanism, a positioning mechanism and a pipeline mechanism.

[0062] Divider box 8: It is fixedly installed in the mounting frame 7 and serves as the center for the diversion and collection of the refrigerant.

[0063] Pumping assembly: It consists of a mounting tube 20, a power tube 21, a plug tube 22, and a support tube 23. The mounting tube 20 is fixed on the inner wall of one side of the shunt box 8, the power tube 21 is tightly slidably sleeved on the mounting tube 20, and is connected to the power assembly (such as a motor and a transmission mechanism) to achieve lateral reciprocating motion, the plug tube 22 is fixedly mounted on one end of the power tube 21, tightly slidably sleeved in the support tube 23, the support tube 23 penetrates the mounting frame 7 and extends to the outside, and is fixedly connected to the U-shaped tube 24.

[0064] U-shaped tube 24: one end is connected to two pumping components, and the other end is connected to the card cover 27 through the exhaust pipe 25, and the card cover 27 is fixedly connected to the air inlet pipe 28 to realize the transportation of refrigerant.

[0065] Power assembly: installed at the bottom of the mounting frame 7, providing power for the pumping assembly, enabling it to perform lateral reciprocating motion, thereby achieving the pumping of the refrigerant.

[0066] Check valve 52: installed at one end of the gas pipe 19 to prevent the refrigerant entering the U-shaped tube 24 from flowing back.

[0067] Air pressure gauge 26: installed on the top of the U-shaped tube 24, used to monitor the air pressure in the U-shaped tube 24 to ensure that the refrigerant is transported at a constant pressure.

[0068] Implementation of positioning mechanism

[0069] Positioning mechanism: installed on the mounting frame 7, with one side extending to the outside of the mounting frame 7, used to clamp the air inlet pipe 28, and tightly dock with the exhaust pipe 25 through the clamp cover 27 to ensure smooth transmission of the refrigerant medium.

[0070] Pipeline mechanism: one end is connected to the diverter box 8 in the conveying mechanism, and the other end extends to the other side of the mounting frame 7 and is clamped with the docking pipe 3, so as to convey the refrigerant medium in the refrigerant storage tank 1 to the diverter box 8.

[0071] When the air pressure in the refrigerant storage tank 1 is sufficient, the refrigerant can flow naturally into the diverter box 8 through the pipeline mechanism, and then under the action of the air delivery pipe 19, the refrigerant is transported to the U-shaped tube 24, and then through the exhaust pipe 25 and the intake pipe 28, and finally transported to the air energy cooling and heating machine. When the air pressure in the refrigerant storage tank 1 is insufficient, the power assembly is started to drive the two pumping assemblies to perform horizontal reciprocating motion. When the power tube 21 approaches the support tube 23, suction is generated to separate the spherical plate 31 in the mounting tube 20 from the fixed sleeve 29, and the refrigerant enters the power tube 21; when the power tube 21 approaches the mounting tube 20, the refrigerant in the power tube 21 presses the spherical plate 31 to separate it from the fixed sleeve 29, and the refrigerant enters the support tube 23, and finally transported to the air energy cooling and heating machine through the U-shaped tube 24, the exhaust pipe 25 and the intake pipe 28.

[0072] The power assembly mainly includes a driving motor 34 , a rectangular frame 33 , a slide plate 36 and a curved rod 35 .

[0073] Driving motor 34: fixedly mounted on one side of the bottom of the mounting frame 7, serving as a power source.

[0074] Rectangular frame 33 : fixedly mounted on the bottom of the power tube 21 , used to support and guide the slide plate 36 .

[0075] Slide plate 36: two slide plates are respectively slidably connected in two rectangular frames 33 to achieve lateral reciprocating motion.

[0076] The curved rod 35 has one end fixedly mounted on the output shaft of the driving motor 34 , and the other end passes through the two slide plates 36 and is rotationally connected to the other side of the bottom of the mounting frame 7 , and is also rotationally connected to the two slide plates 36 .

[0077] When the drive motor 34 is started, the curved rod 35 begins to rotate. Due to the rotational connection between the curved rod 35 and the two slides 36, and the sliding connection of the slides 36 in the rectangular frame 33, the two power tubes 21 can alternately perform transverse reciprocating motion. This movement mode can continuously and uninterruptedly transport the refrigerant entering the diversion box 8 to the U-shaped tube 24, thereby improving the efficiency of filling the air-to-air heating and cooling machine with refrigerant.

[0078] The positioning mechanism includes a support ring 37, a transmission rod 38, a limiting plate 39, a bayonet 40, a moving plate 41 and a clamping assembly.

[0079] Support rings 37 : fixedly mounted on both sides of the mounting frame 7 , respectively, for supporting the transmission rod 38 .

[0080] Transmission rod 38 : The two transmission rods are respectively penetrated and slidably connected in the two support rings 37 , and one end thereof extends to one side of the mounting frame 7 and is fixedly connected to the limiting plate 39 .

[0081] The limiting plate 39 has a bayonet 40 at the top center thereof, which is used for clamping the exhaust pipe 25 and is in contact with one side of the card cover 27 .

[0082] The movable plate 41 is slidably connected to the inner walls of both sides of the mounting frame 7 through sliding holes, one side of which extends to the outside of the mounting frame 7 and is fixedly connected to the other end of the transmission rod 38 .

[0083] The clamping assembly includes a support shaft 43 , a swing arm 44 , a positioning rod 45 , a support cover 46 , a transmission ring 47 , a transmission plate 42 , an arc-shaped clamping plate 48 , a limiting rod 50 , a limiting tube 49 and a second compression spring 51 .

[0084] The support shaft 43 is rotatably connected to one side of the top of the mounting frame 7, and the swing arms 44 are fixedly mounted at both ends.

[0085] The swing arm 44: the side close to each other is fixedly connected to the positioning rod 45, and the side away from each other is rotatably connected to the transmission ring 47.

[0086] Positioning rod 45: penetrates through the positioning openings of the arc-shaped clamping plates 48 in the two support covers 46 to achieve clamping.

[0087] The transmission ring 47 penetrates therein and is slidably connected to the transmission plate 42 , and the bottom of the transmission plate 42 is fixedly connected to the top of the moving plate 41 .

[0088] Arc-shaped clamping plate 48 is slidably connected in the support cover 46 , with an arc-shaped curved surface on the top, a positioning opening on one side and a limit rod 50 fixedly connected on the other side.

[0089] Limit rod 50: Slidingly sleeved in the limit tube 49, one end of the limit tube 49 is fixedly connected to the top of the mounting frame 7, a second compression spring 51 is sleeved on the limit rod 50, and both ends are fixedly connected to the other end of the limit tube 49 and the other side of the arc clamping plate 48 respectively.

[0090] When the card cover 27 needs to be positioned, the positioning rod 45 is pushed to drive the two swing arms 44 to rotate around the support shaft 43, thereby driving the two transmission rings 47 to perform arc motion, and through the transmission cooperation between the transmission ring 47 and the transmission plate 42, the moving plate 41 and the transmission rod 38 are driven to move, so that the limiting plate 39 approaches and presses the card cover 27, and at the same time, the positioning rod 45 moves to contact the top arc surface of the arc clamping plate 48, pushing the arc clamping plate 48 to move horizontally, so that the second compression spring 51 is stressed. When the positioning rod 45 corresponds to the two positioning ports, the limiting plate 39 has pressed and limited the card cover 27, and the stressed second compression spring 51 pushes the arc clamping plate 48 to move in the opposite direction, so that the positioning rod 45 is clamped with the two positioning ports, thereby achieving stable limiting of the card cover 27.

[0091] Through the above-mentioned specific implementation mode, the power assembly can efficiently drive the power tube 21 to perform alternating lateral reciprocating motion, ensure the uninterrupted delivery of the refrigerant medium, and improve the filling efficiency. At the same time, the positioning mechanism can stably limit the card cover 27 to ensure its close docking with the exhaust pipe 25, prevent the refrigerant medium from leaking during the filling process, and ensure the safety and reliability of the filling process.

[0092] First, the delivery pipe 10 is fixedly installed on the inner wall of the other side of the diversion box 8 to ensure a firm connection. Subsequently, the protective pipe 9 is fixedly installed on the other side of the mounting frame 7, and the insulating sleeve 901 is fixedly installed inside the protective pipe 9 to isolate the influence of the external environment on the temperature of the refrigerant medium.

[0093] Next, one end of the delivery pipe 10 is passed through the insulation sleeve 901 and fixedly connected to the inner wall of the insulation sleeve 901 to ensure that no gap is generated between the cold medium and the insulation sleeve 901 during the delivery process, thereby maintaining a stable temperature.

[0094] Then, a connecting ring 11 is fixedly installed at one end of the conveying pipe 10 and one end of the protective pipe 9. The threaded tube 12 is rotated inside the connecting ring 11 so that the threaded tube 12 can rotate and move laterally relative to the connecting ring 11. One end of the threaded tube 12 extends to the outside of the connecting ring 11 and is fixedly installed with a docking joint 13. The shape and size of the docking joint 13 match the inner wall of the rubber sealing ring 4 to ensure a tight fit.

[0095] A nut 15 is threadedly sleeved on the threaded tube 12 , and is used to control the lateral movement of the threaded tube 12 by rotating the nut 15 .

[0096] Next, the assembly steps for installing the components are as follows:

[0097] The fixing plate 14 is fixedly mounted on one side of the nut 15 , and the threaded tube 12 is ensured to penetrate the fixing plate 14 .

[0098] Two mounting rods 16 are respectively fixedly installed on both sides of the fixing plate 14, and one end of the mounting rods 16 is jointly fixedly installed with a U-shaped limiting plate 17, and the U-shaped limiting plate 17 is sleeved on the butt pipe 3, and it is ensured that the U-shaped limiting plate 17 is in contact with the side of the supporting retaining ring close to the opening and closing valve 2 for preliminary positioning.

[0099] The same elastic buckle 18 is fixedly mounted on the two mounting rods 16, so that the elastic buckle 18 can be movably mounted on the butt joint pipe 3 and contact the side of the support retaining ring away from the closing valve 2. In this way, when the U-shaped limiting plate 17 and the elastic buckle 18 are respectively located on both sides of the support retaining ring and both contact the support retaining ring, they jointly limit the horizontal position of the mounting rod 16, providing stable support for the movement of the threaded pipe 12.

[0100] Finally, by rotating the nut 15 and utilizing the threaded transmission effect between the nut 15 and the threaded tube 12, the threaded tube 12 is moved laterally, thereby pushing the docking joint 13 to be inserted into the rubber sealing ring 4 until the docking joint 13 is in close contact with the inner wall of the rubber sealing ring 4. At this time, the on-off valve 2 is opened, and the refrigerant medium in the refrigerant storage tank 1 can be smoothly transported to the diversion box 8 through the docking tube 3, the docking joint 13, the threaded tube 12 and the delivery pipe 10. At the same time, since the heat insulating sleeve 901 is arranged in the protective tube 9, the temperature change of the refrigerant medium during the transportation process is effectively avoided.

[0101] A refrigerant filling device is manufactured by the air energy refrigerant filling pipeline connecting device.

[0102] A method for using an air energy refrigerant injection pipeline connection device comprises the following steps:

[0103] S1. First, after the U-shaped limiting plate 17 is clamped on the butt joint pipe 3, the elastic buckle 18 that moves with the two mounting rods 16 can realize the clamping of the butt joint pipe 3, and the U-shaped limiting plate 17 and the elastic buckle 18 are respectively located on both sides of the support retaining ring and are in contact with the support retaining ring, so the two mounting rods 16 can be laterally limited. The threaded tube 12 is rotated under the threaded transmission action of the nut 15, so that the threaded tube 12 can be moved laterally, so that the butt joint 13 can be inserted into the rubber sealing ring 4, so that the butt joint 13 is in close contact with the inner wall of the rubber sealing ring 4;

[0104] S2, when the positioning rod 45 is pushed to drive the two swing arms 44 to rotate around the support shaft 43, the two transmission rings 47 can be driven to perform arc movement, so that under the transmission cooperation with the corresponding transmission plate 42, the movable plate 41 can be driven to move, that is, the transmission rod 38 can be driven to move. When the transmission rod 38 moves, the limiting plate 39 can be driven to move closer to the mounting bracket 7. After the positioning rod 45 moves to contact the top arc surface of the arc clamping plate 48, the two arc clamping plates 48 can be pushed to move laterally. At this time, the two second compression springs 51 can be in a stressed state. When the positioning rod 45 moves to the position corresponding to the two positioning ports, the limiting plate 39 can press and limit the card cover 27, and the two second compression springs 51 under stress can push the two arc clamping plates 48 to move in the opposite direction, so that the positioning rod 45 is respectively clamped with the two positioning ports. When the exhaust pipe 25 and the card cover 27 are connected, the card cover 27 can be stably limited to keep the card cover 27 and the exhaust pipe 25 stably connected;

[0105] S3. After the on-off valve 2 is opened, the refrigerant in the refrigerant storage tank 1 can be transported to the diverter box 8 through the docking pipe 3, the docking joint 13, the threaded pipe 12 and the delivery pipe 10. At this time, the refrigerant entering the diverter box 8 can be transported to the U-shaped pipe 24 under the output of the air delivery pipe 19, and then transported to the intake pipe 28 through the exhaust pipe 25, and then transported to the air energy cooling and heating integrated machine through the intake pipe 28;

[0106] S4. When the air pressure in the refrigerant storage tank 1 is insufficient, the drive motor 34 can be started to drive the curved rod 35 to rotate, which can drive the two power tubes 21 to alternately reciprocate horizontally. When the power tube 21 approaches the support tube 23, the distance between the power tube 21 and the mounting tube 20 will be expanded, so that the power tube 21 will be under-pressured, which will produce a suction effect. At this time, the spherical plate 31 located on the mounting tube 20 will move under the action of the air pressure and separate from the fixed sleeve 29. At this time, the refrigerant moving into the diversion box 8 can be transported to the power tube 21 through the mounting tube 20. When the power tube 21 approaches the mounting tube 20, the spherical plate 31 located in the mounting tube 20 will maintain close contact with the fixing sleeve 29, so the refrigerant in the power tube 21 can pressurize the spherical plate 31 located in the power tube 21, and the spherical plate 31 will move under the action of the air pressure and separate from the fixing sleeve 29, so that the refrigerant medium is inserted into the support tube 23 through the insert tube 22, and then the U-shaped tube 24 and the exhaust pipe 25 can transport the refrigerant medium to the intake pipe 28 connected to the air-energy cooling and heating machine, so that the refrigerant medium can be filled into the air-energy cooling and heating machine.

[0107] Working principle: in actual use, first clamp the U-shaped limit plate 17 on the butt joint 3, and then the elastic buckle 18 that moves with the two mounting rods 16 can realize the clamping of the butt joint 3, and the U-shaped limit plate 17 and the elastic buckle 18 are respectively located on both sides of the support baffle ring and are in contact with the support baffle ring, so the two mounting rods 16 can be laterally limited, and the threaded tube 12 can be rotated under the threaded transmission action of the nut 15 to make the threaded tube 12 move laterally, so that the butt joint 13 can be inserted into the rubber sealing ring 4, so that the butt joint 13 is in close contact with the inner wall of the rubber sealing ring 4, so that after the on-off valve 2 is opened, the refrigerant in the refrigerant storage tank 1 can pass through the butt joint 3, the butt joint 13, and the threaded tube 12 and the delivery pipe 10 are transported to the shunt box 8, and a heat insulation sleeve 901 is set in the protective pipe 9, which can prevent the temperature change of the refrigerant medium when the refrigerant medium is transported. Then, the positioning rod 45 is pushed to drive the two swing arms 44 to rotate around the support shaft 43, and the two transmission rings 47 can be driven to move in an arc shape, so that the movable plate 41 can be driven to move under the transmission cooperation with the corresponding transmission plate 42, that is, the transmission rod 38 can be driven to move. When the transmission rod 38 moves, it can drive the limiting plate 39 to approach the mounting frame 7. After the positioning rod 45 moves to contact the top arc surface of the arc clamping plate 48, the two arc clamping plates 48 can be pushed to move horizontally, and the two second compression The spring 51 is in a stressed state. When the positioning rod 45 moves to the position corresponding to the two positioning ports, the limiting plate 39 can compress and limit the card cover 27, and the two second compression springs 51 under stress can push the two arc-shaped card plates 48 to move in the opposite direction, so that the positioning rod 45 is respectively clamped with the two positioning ports. In this way, when the exhaust pipe 25 and the card cover 27 are connected, the card cover 27 can be stably limited, and the card cover 27 and the exhaust pipe 25 can be kept stably connected, so that when the refrigerant is poured, there will be no leakage. At this time, the refrigerant entering the diverter box 8 can be output by the gas pipe 19. The refrigerant can be transported to the U-shaped tube 24, and then transported to the intake pipe through the exhaust pipe 25. 28, the refrigerant medium is transported to the air-to-air heating and cooling machine through the air intake pipe 28. When the air pressure in the refrigerant storage tank 1 is insufficient, the drive motor 34 can be started to drive the curved rod 35 to rotate. At this time, under the transmission cooperation of the two slide plates 36 and the corresponding rectangular frame 33, the two power tubes 21 can be driven to alternately reciprocate horizontally. When the power tube 21 approaches the support tube 23, the distance between the power tube 21 and the mounting tube 20 will be expanded, so that the power tube 21 will be under-pressured, which will produce a suction effect. At this time, the spherical plate 31 located on the mounting tube 20 will move under the action of the air pressure and separate from the fixed sleeve 29. At this time, the refrigerant moving into the diversion box 8 can be transported to the power tube 21 through the mounting tube 20.When the power tube 21 approaches the mounting tube 20, the spherical plate 31 in the mounting tube 20 will maintain close contact with the fixing sleeve 29, so the refrigerant in the power tube 21 can pressurize the spherical plate 31 in the power tube 21, and the spherical plate 31 will move under the action of the air pressure and separate from the fixing sleeve 29, so that the refrigerant medium is inserted into the support tube 23 through the insertion tube 22, and then the U-shaped tube 24 and the exhaust pipe 25 can transport the refrigerant medium to the intake pipe 28 connected to the air-energy cooling and heating machine, so that the refrigerant medium can be added to the air-energy cooling and heating machine.

[0108] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 34 are commonplace and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0109] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention; the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An air energy refrigerant perfusion pipeline connection device, comprising a refrigerant storage tank (1) and a base frame (5), wherein an on-off valve (2) is installed on the refrigerant storage tank (1), a butt joint pipe (3) is installed on the on-off valve (2), a rubber sealing ring (4) is fixedly installed in the butt joint pipe (3), support rods (6) are fixedly installed at the four corners of the top of the base frame (5), and the top ends of the four support rods (6) are fixedly installed with the same mounting frame (7), characterized in that: The connecting device also includes: A conveying mechanism, the conveying mechanism is installed in the mounting frame (7), one side of the conveying mechanism extends to the outside of the mounting frame (7), and the conveying mechanism is used to pump the cold medium; A positioning mechanism, the positioning mechanism is mounted on the mounting frame (7), one side of the positioning mechanism extends to one side of the mounting frame (7), an air intake pipe (28) is clamped on the positioning mechanism, a card cover (27) is fixedly mounted on one end of the air intake pipe (28), and the card cover (27) is connected to the conveying mechanism; A pipeline mechanism is connected to the conveying mechanism, one side of the pipeline mechanism extends to the other side of the mounting frame (7) and is clamped with the docking pipe (3), and the pipeline mechanism is used to convey the refrigerant medium in the refrigerant storage tank (1).

2. The air energy refrigerant injection pipeline connection device according to claim 1 is characterized in that: The conveying mechanism comprises a shunt box (8) fixedly mounted in a mounting frame (7), two pumping assemblies are symmetrically mounted on an inner wall of one side of the shunt box (8), one end of the two pumping assemblies both extend to one side of the mounting frame (7) and are connected to a same U-shaped tube (24), an exhaust pipe (25) is fixedly mounted on an inner wall of one side of the U-shaped tube (24), one end of the exhaust pipe (25) extends into a card cover (27) and is clamped with the inner wall of the card cover (27), and a positioning mechanism is used to limit the card cover (27) so that the card cover (27) and the exhaust pipe (25) are aligned with each other. The mounting frame (7) is tightly docked, a power assembly is installed at the bottom of the mounting frame (7), and the power assembly is respectively connected to the two pumping assemblies. An air supply pipe (19) is fixedly installed on the bottom inner wall of the shunt box (8), and a check valve (52) is fixedly installed at one end of the air supply pipe (19). One side of the check valve (52) extends into the U-shaped tube (24) and is fixedly connected to the bottom inner wall of the U-shaped tube (24). One end of the pipeline mechanism extends into the shunt box (8) and is connected to the inner wall of the other side of the shunt box (8). A pressure gauge (26) is fixedly installed on the top of the U-shaped tube (24).

3. The air energy refrigerant injection pipeline connection device according to claim 2 is characterized in that: The pumping assembly comprises a mounting tube (20) fixedly mounted on the inner wall of one side of the shunt box (8), a power tube (21) being tightly slidably sleeved on the mounting tube (20), the power tube (21) being connected to the power assembly, a plug tube (22) being fixedly mounted on one end of the power tube (21), a support tube (23) being tightly slidably sleeved on the plug tube (22), the support tube (23) penetrating the inner wall of one side of the mounting frame (7) and extending to the outside of the mounting frame (7), the support tube (23) being fixedly connected to the inner wall of one side of the mounting frame (7), and one end of the support tube (23) being fixedly connected to one end of the U-shaped tube (24); A fixing sleeve (29) is fixedly installed in the installation tube (20) and the power tube (21), a moving rod (30) is slidably connected in the fixing sleeve (29), a spherical plate (31) is fixedly installed at one end of the moving rod (30), and the spherical plate (31) is used to block the fixing sleeve (29), and a first compression spring (32) is sleeved on the moving rod (30), and two ends of the first compression spring (32) are respectively fixedly connected to the other end of the moving rod (30) and one side of the fixing sleeve (29).

4. The air energy refrigerant injection pipeline connection device according to claim 3 is characterized in that: The power assembly comprises a driving motor (34) fixedly mounted on one side of the bottom of the mounting frame (7); a rectangular frame (33) is fixedly mounted on the bottom of the power tube (21); a slide plate (36) is slidably connected inside the rectangular frame (33); a curved rod (35) is fixedly mounted on the output shaft of the driving motor (34); one end of the curved rod (35) respectively passes through the two slide plates (36) and is rotatably connected to the other side of the bottom of the mounting frame (7); and the curved rod (35) is rotatably connected to the two slide plates (36).

5. The air energy refrigerant injection pipeline connection device according to claim 3 is characterized in that: The positioning mechanism comprises support rings (37) respectively fixedly mounted on both sides of the mounting frame (7), a transmission rod (38) passing through the support ring (37) and slidably connected, one end of each of the two transmission rods (38) extends to one side of the mounting frame (7) and is fixedly mounted with a same limiting plate (39), a bayonet (40) is provided at the top center position of the limiting plate (39), the exhaust pipe (25) passes through the bayonet (40), the limiting plate (39) contacts one side of the card cover (27), sliding holes are provided on the inner walls of both sides of the mounting frame (7), a moving plate (41) is slidably connected to the sliding holes, one side of the moving plate (41) extends to the outside of the mounting frame (7), and the other end of the transmission rod (38) is fixedly connected to the top of the corresponding moving plate (41); A clamping assembly is installed on the top of the mounting frame (7), and two sides of the clamping assembly extend to two sides of the mounting frame (7) and are respectively connected to the tops of the two movable plates (41).

6. The air energy refrigerant injection pipeline connection device according to claim 5, characterized in that: The clamping assembly comprises a support shaft (43) rotatably connected to one side of the top of the mounting frame (7), swing arms (44) are fixedly installed at both ends of the support shaft (43), and the same positioning rod (45) is fixedly installed on the side where the two swing arms (44) are close to each other, and two support covers (46) are symmetrically fixedly installed on the top of the mounting frame (7), and an arc-shaped clamping plate (48) is slidably connected inside the support cover (46), and the top of the arc-shaped clamping plate (48) extends to the top of the support cover (46), and the top of the arc-shaped clamping plate (48) is an arc-shaped curved surface, and a positioning opening is opened on the top of one side of the arc-shaped clamping plate (48), and the positioning rod (45) passes through the two positioning openings respectively and is clamped with the two positioning openings respectively; A transmission ring (47) is rotatably connected to the two swing arms (44) at the sides away from each other, a transmission plate (42) is slidably connected through the transmission ring (47), and the bottom of the transmission plate (42) is fixedly connected to the top of the corresponding moving plate (41); A limiting rod (50) is fixedly installed on the other side of the arc-shaped clamping plate (48), a limiting tube (49) is slidably sleeved on the limiting rod (50), one end of the limiting tube (49) is fixedly connected to the top of the mounting frame (7), and a second compression spring (51) located on one side of the limiting tube (49) is sleeved on the limiting rod (50), and two ends of the second compression spring (51) are respectively fixedly connected to the other end of the limiting tube (49) and the other side of the arc-shaped clamping plate (48).

7. The air energy refrigerant injection pipeline connection device according to claim 1, characterized in that: The pipeline mechanism comprises a delivery pipe (10) fixedly mounted on the inner wall of the other side of the shunt box (8); a protective pipe (9) fixedly mounted on the other side of the mounting frame (7); a heat insulating sleeve (901) fixedly mounted inside the protective pipe (9); one end of the delivery pipe (10) passes through the heat insulating sleeve (901) and is fixedly connected to the inner wall of the heat insulating sleeve (901); one end of the delivery pipe (10) and one end of the protective pipe (9) are fixedly mounted with a same connecting ring (11); a threaded pipe (12) connected to the delivery pipe (10) is rotatably connected inside the connecting ring (11); one end of the threaded pipe (12) extends to the outside of the connecting ring (11) and is fixedly mounted with a docking joint (13); one end of the docking joint (13) extends into the rubber sealing ring (4) and is tightly fitted with the inner wall of the rubber sealing ring (4); a nut (15) is provided on the threaded sleeve of the threaded pipe (12); A mounting assembly is connected to the nut (15), a support retaining ring is fixedly sleeved on the butt joint pipe (3), and the mounting assembly and the support retaining ring are clamped together so that the butt joint (13) and the rubber sealing ring (4) are tightly plugged.

8. The air energy refrigerant injection pipeline connection device according to claim 7, characterized in that: The mounting assembly comprises a fixing plate (14) fixedly mounted on one side of a nut (15), the threaded tube (12) passing through the fixing plate (14), fixing rods (16) fixedly mounted on both sides of the fixing plate (14), one end of the two fixing rods (16) fixedly mounted with U-shaped limit plates (17), the U-shaped limit plates (17) being sleeved on the butt-joint pipe (3), the U-shaped limit plates (17) being in contact with a side of a support retaining ring close to the on-off valve (2), the same elastic buckle (18) being fixedly mounted on the two fixing rods (16), the elastic buckle (18) being movably mounted on the butt-joint pipe (3), and the elastic buckle (18) being in contact with a side of the support retaining ring far from the on-off valve (2).

9. A refrigerant filling device, characterized in that: The refrigerant filling equipment is made by the air-energy refrigerant filling pipeline connection device described in any one of claims 1-8.

10. The method for using the air energy refrigerant injection pipeline connection device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Connection between the butt joint pipe and the sealing ring: First, the U-shaped limit plate (17) is clamped on the butt joint pipe (3), and then the butt joint pipe (3) is clamped by the elastic buckle (18) that moves with the mounting rod (16). The U-shaped limit plate (17) and the elastic buckle (18) are respectively located on both sides of the support retaining ring and contact with it to achieve lateral positioning of the mounting rod (16). By rotating the threaded tube (12) and the threaded transmission of the nut (15), the threaded tube (12) is moved laterally, and the butt joint (13) is tightly inserted into the rubber sealing ring (4). S2. Connection between the positioning card cover and the exhaust pipe: Push the positioning rod (45) to drive the swing arm (44) to rotate around the support shaft (43), thereby driving the transmission ring (47) to move in an arc shape. Through the cooperation of the transmission plate (42), the movable plate (41) and the transmission rod (38) move accordingly, so that the limiting plate (39) approaches the mounting frame (7). When the positioning rod (45) contacts the arc surface of the arc-shaped card plate (48), the arc-shaped card plate (48) is pushed to move laterally, compressing the second compression spring (51). When the positioning rod (45) is aligned with the positioning port, the limiting plate (39) presses the card cover (27), and the second compression spring (51) pushes the arc-shaped card plate (48) in the opposite direction, so that the positioning rod (45) is stuck in the positioning port, thereby stabilizing the connection between the limiting card cover (27) and the exhaust pipe (25). S3, refrigerant delivery: open the on-off valve (2), the refrigerant in the refrigerant storage tank (1) flows through the butt joint (3), the butt joint (13), the threaded pipe (12), the delivery pipe (10) to the diverter box (8). Under the action of the air delivery pipe (19), the refrigerant is delivered to the U-shaped pipe (24), then enters the air intake pipe (28) through the exhaust pipe (25), and finally delivered to the air energy cooling and heating machine. S4. Pressurized refrigerant delivery when air pressure is insufficient: If the air pressure in the refrigerant storage tank (1) is insufficient, the drive motor (34) is started to rotate the curved rod (35), driving the power tube (21) to alternately move back and forth horizontally. When the power tube (21) approaches the support tube (23), suction is generated therein, so that the spherical plate (31) in the mounting tube (20) is separated from the fixed sleeve (29) under the action of air pressure, and the refrigerant flows into the power tube (21). On the contrary, when the power tube (21) approaches the mounting tube (20), pressure is applied to the spherical plate (31) to separate it from the fixed sleeve (29), and the refrigerant enters the support tube (23) through the insert tube (22), and is finally transported to the intake pipe (28) through the U-tube (24) and the exhaust pipe (25), so as to pressurize and fill the refrigerant for the air-energy cooling and heating machine.

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