Air energy refrigerant filling pipeline connection device, refrigerant filling equipment and method

Abstract

The present invention belongs to the technical field of refrigeration equipment, in particular to an air energy refrigerant filling pipeline connection device, a refrigerant filling device and a method. Aiming at the disadvantages in the prior art that when filling the refrigerant medium, the utilization rate of the refrigerant will be reduced, and when connecting the conveying pipeline to the intake pipe of the air energy heating and cooling integrated machine, the refrigerant medium is likely to leak. The connection device includes a refrigerant storage tank and a chassis. An opening and closing valve is installed on the refrigerant storage tank, and a butt joint pipe is installed on the opening and closing valve. A rubber sealing ring is fixedly installed in the butt joint pipe in a sealed manner. When the air pressure in the refrigerant storage tank is insufficient, the present invention can continuously boost and convey the refrigerant medium by starting the driving motor, so as to avoid waste of the refrigerant medium. And when docking with the intake pipe of the air energy heating and cooling integrated machine, stable connection can be achieved through a clamping form, so no leakage will occur when conveying the refrigerant medium.

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, a refrigerant filling device and a method thereof. Background Art

[0002] The characteristics of an air energy heating and cooling integrated machine include advantages such as energy conservation, power saving, safety, and comfort. It can not only provide comfortable heating in winter but also provide a cooling function in summer. This device usually adopts a water system for heating and cooling, effectively avoiding the occurrence of air-conditioning diseases and not generating harmful gases during operation, meeting environmental protection requirements.

[0003] During the production process of an air energy heating and cooling integrated machine, the filling of refrigerant is a key link. Currently, the refrigerant pipe joints of refrigerant filling machines are usually connected to the connecting copper pipes of the indoor unit and outdoor unit of the air energy heating and cooling integrated machine through corresponding caliber pipe joints.

[0004] However, there are still some deficiencies in the prior art when performing refrigerant filling:

[0005] 1. During the process of filling the refrigerant medium, the transportation mainly relies on the high pressure in the refrigerant storage tank. However, when the air pressure in the storage tank is insufficient, the refrigerant transportation efficiency will decrease, and even some refrigerant in the tank may not be output, resulting in waste of the refrigerant medium.

[0006] 2. Currently, when connecting the filling pipeline to the intake pipe of the air energy heating and cooling integrated machine, a threaded connection method is mostly used. This method requires using a wrench to tighten the nut, but it is difficult to ensure the tightness of the connection only relying on manual experience, easily leading to leakage of the refrigerant medium.

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

[0008] The present invention provides an air energy refrigerant filling pipeline connection device, a refrigerant filling device and a method thereof, which solve the shortcomings in the prior art that during the filling of the refrigerant medium, the utilization rate of the refrigerant will be reduced and when connecting the transportation pipeline to the intake pipe of the air energy heating and cooling integrated machine, the refrigerant medium is likely to leak.

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

[0010] An air energy refrigerant filling pipeline connection device includes a refrigerant storage tank and a chassis. An opening and closing valve is installed on the refrigerant storage tank, a docking pipe is installed on the opening and closing valve, a rubber sealing ring is fixedly installed in the docking pipe in a sealed manner, support rods are fixedly installed at the four corner positions on the top of the chassis, and the tops of the four support rods are fixedly installed with the same mounting frame. The connection device further 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 is fixedly installed on the other side of the mounting bracket. A heat insulation sleeve is fixedly installed inside the protective pipe. One end of the delivery pipe penetrates 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 connection ring. A threaded pipe communicated with the delivery pipe is rotatably connected inside the connection ring. One end of the threaded pipe extends to the outside of the connection ring and is fixedly installed with a docking head. One end of the docking head extends into the rubber sealing ring and is in close fit with the inner wall of the rubber sealing ring. A nut is threadedly sleeved on the threaded pipe;

[0024] An installation component is connected to the nut. A support retaining ring is fixedly sleeved on the docking pipe. The installation component is clamped with the support retaining ring, so that the docking head is tightly inserted into the rubber sealing ring.

[0025] In a possible design, the installation component includes a fixing plate fixedly installed on one side of the nut. The threaded pipe penetrates through the fixing plate. Installation rods are fixedly installed on both sides of the fixing plate. One ends of the two installation rods are fixedly installed with a U-shaped limiting plate. The U-shaped limiting plate is sleeved on the docking pipe. The U-shaped limiting plate is in contact with one side of the support retaining ring close to the on-off valve. An elastic buckle is fixedly installed on the two installation rods. The elastic buckle is movably clamped with the docking pipe. The elastic buckle is in contact with one side of the support retaining ring far from the on-off valve.

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

[0027] A using method of an air energy refrigerant filling pipeline connection device includes the following steps:

[0028] S1: Connection between the docking pipe and the sealing ring

[0029] First, the U-shaped limiting plate is clamped on the docking pipe, and then the docking pipe is clamped by the elastic buckle moving along with the installation rod. The U-shaped limiting plate and the elastic buckle are respectively located on both sides of the support retaining ring and are in contact with it, realizing the lateral limit of the installation rod. By the threaded transmission of the rotating threaded pipe and the nut, the threaded pipe moves laterally, and the docking head is tightly inserted into the rubber sealing ring.

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

[0031] Push the positioning rod to drive the swing arm to rotate around the support shaft, and then drive the transmission ring to perform an arc-shaped movement. Through the cooperation of the transmission plate, the moving plate and the transmission rod move accordingly, so that the limiting plate approaches the mounting bracket. When the positioning rod touches the arc surface of the arc-shaped clamping plate, the arc-shaped clamping plate is pushed to move laterally, compressing the second compression spring. When the positioning rod is aligned with the positioning port, the limiting plate presses the cover tightly, and the second compression spring pushes the arc-shaped clamping plate in the reverse direction, so that the positioning rod is clamped into the positioning port, stably limiting the connection between the positioning cover and the exhaust pipe.

[0032] S3: Delivery of refrigerant medium

[0033] Open the on-off valve, and the refrigerant medium in the refrigerant storage tank flows through the docking pipe, docking head, threaded pipe, delivery pipe to the distribution box. Under the action of the gas delivery pipe, the refrigerant medium is delivered to the U-shaped pipe, and then enters the intake pipe through the exhaust pipe and finally reaches the air source heat pump unit for heating and cooling.

[0034] S4: Boosted delivery of refrigerant when air pressure is insufficient

[0035] If the air pressure in the refrigerant storage tank is insufficient, start the drive motor to rotate the curved rod, driving the power pipe to move horizontally back and forth alternately. When the power pipe approaches the support pipe, a suction force is generated inside it, causing the spherical plate in the installation pipe to separate from the fixed sleeve under the action of air pressure, and the refrigerant medium flows into the power pipe. Conversely, when the power pipe approaches the installation pipe, it presses on the spherical plate, causing it to separate from the fixed sleeve, and the refrigerant medium enters the support pipe through the insertion pipe and is finally delivered to the intake pipe through the U-shaped pipe and exhaust pipe to boost and fill the refrigerant medium for the air source heat pump unit.

[0036] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present invention.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] In the present invention, through the provided delivery mechanism, in the normal state, the refrigerant medium in the refrigerant storage tank can be delivered to the distribution box through the pipeline mechanism, and then under the output of the gas delivery pipe, the refrigerant medium can be delivered into the U-shaped pipe. After that, through the delivery of the exhaust pipe, the refrigerant medium can be delivered into the intake pipe, and through the intake pipe, the refrigerant medium is delivered into the air source heat pump unit. When the air pressure in the refrigerant storage tank is insufficient, the power assembly can be started to drive the two pumping assemblies to move, pumping out the refrigerant medium in the refrigerant storage tank and delivering it into the U-shaped pipe, and then the refrigerant medium can be delivered into the air source heat pump unit at a constant pressure. Therefore, when the air pressure in the refrigerant storage tank is insufficient, it will not affect the filling of the refrigerant medium.

[0039] In the present invention, through the provided positioning mechanism, when the positioning rod is pushed to drive the two swing arms to rotate around the support shaft, the two transmission rings can be driven to perform an arc-shaped movement at this time. In this way, under the transmission cooperation with the corresponding transmission plates, the moving plate can be driven to move, and then the transmission rod can be driven to move. When the transmission rod moves, the limiting plate can be driven to approach the mounting bracket. After the positioning rod moves to contact the top arc surface of the arc-shaped clamping plate, the two arc-shaped clamping plates can be pushed to move horizontally. At this time, the two second compression springs can be in a stressed state. When the positioning rod moves to a position corresponding to the two positioning ports, the limiting plate can tightly limit the mask, and the two stressed second compression springs can push the two arc-shaped clamping plates to move in the reverse direction, so that the positioning rod is respectively clamped with the two positioning ports. In this way, when the exhaust pipe and the mask are connected, the mask can be stably limited, and the connection between the mask and the exhaust pipe can be kept stable, so that when the refrigerant medium is filled, the problem of leakage will not occur;

[0040] In the present invention, through the provided pipeline mechanism, after the installation component is clamped on the support retaining ring, the threaded pipe can be rotated at this time. Under the threaded transmission action with the nut, the threaded pipe can be driven to move horizontally. In this way, the docking head can be inserted into the rubber sealing ring, so that the docking head is in close contact with the inner wall of the rubber sealing ring. Thus, after the on-off valve is opened, the refrigerant medium in the refrigerant storage tank can be transported to the flow splitting box through the docking pipe, the docking head, the threaded pipe and the delivery pipe. And an insulating sleeve is arranged in the protective pipe, which can avoid the temperature change of the refrigerant medium when the refrigerant medium is transported.

[0041] When the air pressure in the refrigerant storage tank of the present invention is insufficient, the refrigerant medium can be continuously pressurized and transported by starting the drive motor, so as to avoid the problem of waste of the refrigerant medium. And when docking with the intake pipe of the air source heat pump water heater, it can be stably connected by means of clamping, so that no leakage will occur when the refrigerant medium is transported. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a three-dimensional schematic diagram of the overall structure of the air source refrigerant filling pipeline connection device provided by the embodiment of the present invention;

[0043] Figure 2 is a three-dimensional schematic diagram of the on-off valve, the docking pipe and the rubber sealing ring structure of the air source refrigerant filling pipeline connection device provided by the embodiment of the present invention;

[0044] Figure 3 is a three-dimensional schematic diagram of the connection structure of the mounting bracket, the protective pipe, the threaded pipe and the docking head of the air source refrigerant filling pipeline connection device provided by the embodiment of the present invention;

[0045] Figure 4Three-dimensional schematic diagram of the connection structure of the protective tube, heat insulation sleeve, delivery pipe, threaded pipe, fixing plate, two mounting rods and U-shaped clamping plate of the air energy refrigerant filling pipeline connection device provided by the embodiment of the present invention;

[0046] Figure 5 Three-dimensional schematic diagram of the connection structure of the mounting frame, flow dividing box, two mounting pipes, two power pipes and U-shaped pipe of the air energy refrigerant filling pipeline connection device provided by the embodiment of the present invention;

[0047] Figure 6 Bottom view three-dimensional schematic diagram of the connection structure of the chassis, multiple support rods, mounting frame, limiting plate and U-shaped pipe of the air energy refrigerant filling pipeline connection device provided by the embodiment of the present invention;

[0048] Figure 7 Three-dimensional schematic diagram of the connection structure of the flow dividing box, two mounting pipes, two power pipes, driving motor, curved rod, two rectangular rings, two support pipes and U-shaped pipe of the air energy refrigerant filling pipeline connection device provided by the embodiment of the present invention;

[0049] Figure 8 Three-dimensional schematic diagram of the sectional structure of the mounting pipe, power pipe and insertion pipe of the air energy refrigerant filling pipeline connection device provided by the embodiment of the present invention;

[0050] Figure 9 Three-dimensional schematic diagram of the connection structure of the two transmission rods, two swing arms and support shaft of the air energy refrigerant filling pipeline connection device provided by the embodiment of the present invention.

[0051] Reference numerals:

[0052] 1, refrigerant storage tank; 2, opening and closing valve; 3, docking pipe; 4, rubber sealing ring; 5, chassis; 6, support rod; 7, mounting frame; 8, flow dividing box; 9, protective tube; 901, heat insulation sleeve; 10, delivery pipe; 11, connecting ring; 12, threaded pipe; 13, docking head; 14, fixing plate; 15, nut; 16, mounting rod; 17, U-shaped limiting plate; 18, elastic buckle; 19, gas transmission 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, fixing sleeve; 30, moving rod; 31, spherical plate; 32, first compression spring; 33, rectangular frame; 34, driving motor; 35, curved rod; 36, sliding 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-shaped clamping plate; 49, limiting pipe; 50, limiting rod; 51, second compression spring; 52, check valve. Detailed implementation manners

[0053] The embodiments of the present invention will be described below with reference to 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, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative positional relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only with reference to the direction of the accompanying drawings. Therefore, the orientation 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 to the embodiments of the present invention.

[0055] Embodiment 1

[0056] Referring to Figures 1-9 , an air energy refrigerant filling pipeline connection device in this embodiment includes a refrigerant storage tank 1, an opening and closing valve 2, a docking pipe 3, a rubber sealing ring 4, a chassis 5, a support rod 6, a mounting bracket 7, and a conveying mechanism, a positioning mechanism, and a pipeline mechanism.

[0057] Refrigerant storage tank 1: Used to store the refrigerant medium, on which an opening and closing valve 2 is installed to control the outflow of the refrigerant.

[0058] Opening and closing valve 2: Installed on the refrigerant storage tank 1, and the flow of the refrigerant can be controlled by operating the opening and closing valve 2.

[0059] Docking pipe 3: Installed on the opening and closing valve 2, used to connect the pipeline mechanism to realize the transmission of the refrigerant. A rubber sealing ring 4 is fixedly installed inside the docking pipe 3 to ensure the sealing performance of the connection.

[0060] Chassis 5: As the support structure of the entire device, support rods 6 are fixedly installed at the four corners of its top.

[0061] Support rods 6: There are four in total, respectively fixed at the four corners of the top of the chassis 5, and the same mounting bracket 7 is fixedly installed at their tops, which is used to install the conveying mechanism, the positioning mechanism, and the pipeline mechanism.

[0062] Shunt box 8: Fixedly installed inside the mounting bracket 7, serving as the center for refrigerant shunting and gathering.

[0063] Suction and delivery component: It consists of an installation pipe 20, a power pipe 21, an insertion pipe 22, and a support pipe 23. The installation pipe 20 is fixed on one inner wall of the flow distribution box 8. The power pipe 21 is tightly sleeved on the installation pipe 20 in a sliding manner and is connected to a power component (such as a motor and a transmission mechanism) to achieve horizontal reciprocating motion. The insertion pipe 22 is fixedly installed at one end of the power pipe 21 and is tightly sleeved inside the support pipe 23. The support pipe 23 penetrates through the installation frame 7 and extends to the outside, and is fixedly connected to the U-shaped pipe 24.

[0064] U-shaped pipe 24: One end is connected to two suction and delivery components, and the other end is connected to the card cover 27 through the exhaust pipe 25. The card cover 27 is then fixedly connected to the intake pipe 28 to achieve the delivery of the refrigerant.

[0065] Power component: It is installed at the bottom of the installation frame 7, providing power for the suction and delivery component to enable it to perform horizontal reciprocating motion, thereby realizing the suction and delivery of the refrigerant.

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

[0067] Pressure gauge 26: It is installed on the top of the U-shaped pipe 24, used to monitor the air pressure inside the U-shaped pipe 24 to ensure the refrigerant is delivered at a constant pressure.

[0068] Realization of the positioning mechanism

[0069] Positioning mechanism: It is installed on the installation frame 7, with one side extending to the outside of the installation frame 7, used to clamp the intake pipe 28 and is tightly docked with the exhaust pipe 25 through the card cover 27 to ensure the smooth transmission of the refrigerant medium.

[0070] Pipeline mechanism: One end is connected to the flow distribution box 8 in the conveying mechanism, and the other end extends to the other side of the installation frame 7 and is clamped with the docking pipe 3, used to convey the refrigerant medium in the refrigerant storage tank 1 into the flow distribution box 8.

[0071] When the air pressure in the refrigerant storage tank 1 is sufficient, the refrigerant medium can naturally flow into the flow distribution box 8 through the pipeline mechanism. Subsequently, under the action of the gas transmission pipe 19, the refrigerant medium is conveyed into the U-shaped pipe 24, and then through the exhaust pipe 25 and the intake pipe 28, and finally conveyed into the air source heat pump air conditioner. When the air pressure in the refrigerant storage tank 1 is insufficient, the power component is started to drive the two suction and delivery components to perform horizontal reciprocating motion. When the power pipe 21 approaches the support pipe 23, suction is generated, causing the spherical plate 31 in the installation pipe 20 to separate from the fixed sleeve 29, and the refrigerant medium enters the power pipe 21; when the power pipe 21 approaches the installation pipe 20, the refrigerant in the power pipe 21 presses on the spherical plate 31, causing it to separate from the fixed sleeve 29, and the refrigerant medium enters the support pipe 23, and finally is conveyed into the air source heat pump air conditioner through the U-shaped pipe 24, the exhaust pipe 25 and the intake pipe 28.

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

[0073] Drive motor 34: Fixedly installed on one side of the bottom of the mounting frame 7, serving as the power source.

[0074] Rectangular frame 33: Fixedly installed at the bottom of the power pipe 21, used to support and guide the slide plate 36.

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

[0076] Curved rod 35: One end of it is fixedly installed on the output shaft of the drive motor 34, the other end penetrates through the two slide plates 36 and is rotatably connected to the other side of the bottom of the mounting frame 7, and is also rotatably 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 slide plates 36, and the sliding connection of the slide plates 36 within the rectangular frames 33, the two power pipes 21 can alternately perform lateral reciprocating motion. This motion mode can continuously and uninterruptedly transport the refrigerant medium entering the flow splitting box 8 into the U-shaped pipe 24, thereby improving the efficiency of filling the refrigerant medium into the air source heat pump water heater.

[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 ring 37: Fixedly installed on both sides of the mounting frame 7 respectively, used to support the transmission rod 38.

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

[0081] Limiting plate 39: A bayonet 40 is opened at the center position of the top, used to clamp the exhaust pipe 25, and is in contact with one side of the card cover 27 at the same time.

[0082] Moving plate 41: Slidably connected to the inner walls on both sides of the mounting frame 7 through a sliding hole, one side of it 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] Support shaft 43: Rotatably connected to one side of the top of the mounting frame 7, and swing arms 44 are fixedly installed at both ends.

[0085] Swing arm 44: One side close to each other is fixedly connected with a positioning rod 45, and one side far from each other is rotatably connected with a transmission ring 47.

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

[0087] Transmission ring 47: A transmission plate 42 is slidably connected through the inside, 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: Slidably connected inside the support cover 46, the top is an arc-shaped curved surface, a positioning port is opened on one side, and a limiting rod 50 is fixedly connected to the other side.

[0089] Limiting rod 50: Slidably sleeved inside the limiting tube 49, one end of the limiting tube 49 is fixedly connected to the top of the mounting bracket 7, a second compression spring 51 is sleeved on the limiting rod 50, and the two ends are respectively fixedly connected to the other end of the limiting tube 49 and the other side of the arc-shaped clamping plate 48.

[0090] When it is necessary to position the card cover 27, push the positioning rod 45 to drive the two swing arms 44 to rotate around the support shaft 43, thereby driving the two transmission rings 47 to perform an arc-shaped movement. Through the transmission cooperation between the transmission ring 47 and the transmission plate 42, drive the moving plate 41 and the transmission rod 38 to move, so that the limiting plate 39 approaches and presses against the card cover 27. At the same time, the positioning rod 45 moves to contact the top arc surface of the arc-shaped clamping plate 48, and pushes the arc-shaped 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-shaped clamping plate 48 to move in the reverse direction, so that the positioning rod 45 is clamped with the two positioning ports, thereby realizing the stable limit of the card cover 27.

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

[0092] First, fixedly install the delivery pipe 10 on the inner wall of the other side of the flow splitting box 8 to ensure a firm connection. Subsequently, fixedly install the protection pipe 9 on the other side of the mounting bracket 7, and a heat insulation sleeve 901 is fixedly installed inside the protection pipe 9 to isolate the influence of the external environment on the temperature of the refrigerant medium.

[0093] Next, penetrate one end of the delivery pipe 10 through the heat insulation sleeve 901 and fixedly connect it to the inner wall of the heat insulation sleeve 901 to ensure that there is no gap between the refrigerant medium and the heat insulation sleeve 901 during the delivery process, so as to maintain a stable temperature.

[0094] Then, at one end of the delivery pipe 10 and one end of the protection pipe 9, a connecting ring 11 is fixedly installed. Inside the connecting ring 11, a threaded pipe 12 is rotatably connected, enabling the threaded pipe 12 to rotate and move laterally relative to the connecting ring 11. One end of the threaded pipe 12 extends to the outside of the connecting ring 11, and a docking head 13 is fixedly installed. The shape and size of the docking head 13 match the inner wall of the rubber sealing ring 4 to ensure a tight fit.

[0095] On the threaded pipe 12, a nut 15 is threadedly sleeved for controlling the lateral movement of the threaded pipe 12 by rotating the nut 15.

[0096] Next, the assembly steps of the installation component are as follows:

[0097] The fixing plate 14 is fixedly installed on one side of the nut 15, ensuring that the threaded pipe 12 passes through the fixing plate 14.

[0098] On both sides of the fixing plate 14, two mounting rods 16 are fixedly installed respectively. One end of the mounting rods 16 is fixedly installed with a U-shaped limiting plate 17 together. The U-shaped limiting plate 17 is sleeved on the docking pipe 3, and it is ensured that the U-shaped limiting plate 17 contacts the side of the support retaining ring close to the on-off valve 2 for preliminary positioning.

[0099] On the two mounting rods 16, the same elastic buckle 18 is fixedly installed, enabling the elastic buckle 18 to be movably clamped on the docking pipe 3 and contact the side of the support retaining ring far from the on-off 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 provide lateral limitation for the mounting rod 16 and provide stable support for the movement of the threaded pipe 12.

[0100] Finally, by rotating the nut 15, using its threaded driving effect with the threaded pipe 12, the threaded pipe 12 is moved laterally, thereby pushing the docking head 13 into the rubber sealing ring 4 until the docking head 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 flow splitting box 8 through the docking pipe 3, the docking head 13, the threaded pipe 12, and the delivery pipe 10. At the same time, since the heat insulation sleeve 901 is provided in the protection pipe 9, the temperature change of the refrigerant medium during transportation is effectively avoided.

[0101] A refrigerant filling device is made by the above-mentioned air energy refrigerant filling pipeline connection device.

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

[0103] S1. First, after the U-shaped limiting plate 17 is clamped on the docking pipe 3, the elastic buckle 18 that moves along with the two mounting rods 16 can clamp the docking pipe 3. Moreover, 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. Therefore, the two mounting rods 16 can be laterally limited. By rotating the threaded pipe 12 under the action of the threaded drive with the nut 15, the threaded pipe 12 can be laterally moved, so that the docking head 13 can be inserted into the rubber sealing ring 4, and the docking head 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 move in an arc at this time. Thus, under the transmission cooperation with the corresponding transmission plates 42, the moving plate 41 can be driven to move, and then the transmission rod 38 can be driven to move. When the transmission rod 38 moves, the limiting plate 39 can be driven to approach the mounting frame 7. After the positioning rod 45 moves to contact the top arc surface of the arc-shaped clamping plate 48, the two arc-shaped clamping plates 48 can be pushed to move laterally. At this time, the two second compression springs 51 are in a stressed state. When the positioning rod 45 moves to a position corresponding to the two positioning ports, the limiting plate 39 can tightly limit the cover 27. And the two stressed second compression springs 51 can push the two arc-shaped clamping plates 48 to move in the reverse 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 cover 27 are connected, the cover 27 can be stably limited, and the cover 27 and the exhaust pipe 25 can be stably connected;

[0105] S3. After the on-off valve 2 is opened, the refrigerant medium in the refrigerant storage tank 1 can be transported to the flow dividing box 8 through the docking pipe 3, the docking head 13, the threaded pipe 12 and the delivery pipe 10. At this time, the refrigerant medium entering the flow dividing box 8 can be transported to the U-shaped pipe 24 under the output of the air delivery pipe 19, and then through the transportation of the exhaust pipe 25, the refrigerant medium can be transported to the air intake pipe 28, and the refrigerant medium can be transported to the air source heat pump through the air 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, after the U-shaped limit plate 17 is clamped on the docking pipe 3, the elastic buckle 18 that moves with the two mounting rods 16 can clamp the docking pipe 3. And the U-shaped limit 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. By rotating the threaded pipe 12 under the action of the threaded drive with the nut 15, the threaded pipe 12 can be laterally moved, so that the docking head 13 can be inserted into the rubber sealing ring 4, making the inner wall of the docking head 13 in close contact with the rubber sealing ring 4. Thus, after the opening and closing valve 2 is opened, the refrigerant medium in the refrigerant storage tank 1 can be transported to the flow distribution box 8 through the docking pipe 3, the docking head 13, the threaded pipe 12 and the delivery pipe 10. And an insulating sleeve 901 is provided in the protective pipe 9, which can prevent the refrigerant medium from changing temperature during the transportation of the refrigerant medium. Then, 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 an arc-shaped movement at this time. Thus, through the transmission cooperation with the corresponding transmission plates 42, the moving 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 approach the mounting frame 7. After the positioning rod 45 moves to contact the top arc surface of the arc-shaped clamping plate 48, the two arc-shaped clamping plates 48 can be pushed to move laterally. At this time, the two second compression springs 51 are in a stressed state. When the positioning rod 45 moves to a position corresponding to the two positioning ports, the limiting plate 39 can tightly limit the cover 27. And the two stressed second compression springs 51 can push the two arc-shaped clamping plates 48 to move in the opposite direction, so that the positioning rod 45 is respectively clamped with the two positioning ports. Thus, when the exhaust pipe 25 and the cover 27 are connected, the cover 27 can be stably limited, keeping the cover 27 and the exhaust pipe 25 stably connected, so that no leakage problem will occur during the refrigerant medium filling. At this time, the refrigerant medium entering the flow distribution box 8 can be output by the air delivery pipe 19 and transported to the U-shaped pipe 24. Then, after being transported through the exhaust pipe 25, the refrigerant medium can be transported to the air intake pipe 28 and then transported to the air source heat pump 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, through the transmission cooperation of the two slide plates 36 and the corresponding rectangular frames 33, the two power pipes 21 can be driven to alternately reciprocate laterally. When the power pipe 21 approaches the support pipe 23, the distance between the power pipe 21 and the mounting pipe 20 will increase at this time. Therefore, a negative pressure state will appear in the power pipe 21, producing a suction effect. At this time, the spherical plate 31 located on the mounting pipe 20 will move under the action of air pressure and separate from the fixed sleeve 29. At this time, the refrigerant medium that moves into the flow distribution box 8 can be transported to the power pipe 21 through the mounting pipe 20.When the power pipe 21 approaches the installation pipe 20, the spherical plate 31 located inside the installation pipe 20 will be in close contact with the fixed sleeve 29 at this time. Therefore, the refrigerant inside the power pipe 21 can exert pressure on the spherical plate 31 located inside the power pipe 21. The spherical plate 31 will move under the action of air pressure and separate from the fixed sleeve 29, so that the refrigerant medium can be inserted into the support pipe 23 through the insertion pipe 22. Then, through the U-shaped pipe 24 and the exhaust pipe 25, the refrigerant medium can be transported into the intake pipe 28 connected to the air source heat pump for heating and cooling, and the refrigerant medium can be filled into the air source heat pump for heating and cooling.

[0108] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 34 are common knowledge, and they all belong to conventional means or well-known common sense. Therefore, they will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

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

Claims

1. An air - energy refrigerant filling pipeline connection device, comprising a refrigerant storage tank (1) and a chassis (5). An opening - closing valve (2) is installed on the refrigerant storage tank (1), a docking pipe (3) is installed on the opening - closing valve (2), a rubber sealing ring (4) is fixedly installed inside the docking pipe (3) in a sealed manner. Support rods (6) are fixedly installed at the four corner positions on the top of the chassis (5), and the tops of the four support rods (6) are fixedly installed with the same mounting frame (7). It is 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, the 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); The conveying mechanism comprises a shunt box (8) fixedly mounted in a mounting frame (7), two pumping assemblies being symmetrically mounted on an inner wall of one side of the shunt box (8), one end of each of the two pumping assemblies extending to one side of the mounting frame (7) and connected to a same U-shaped tube (24), an exhaust pipe (25) being fixedly mounted on an inner wall of one side of the U-shaped tube (24), one end of the exhaust pipe (25) extending into a card cover (27) and being clamped with an inner wall of the card cover (27), and a positioning mechanism being used to limit the card cover (27) so that the card cover (27) and the exhaust pipe (25) are aligned with each other. The two components are tightly docked, a power assembly is installed at the bottom of the mounting frame (7), and the power assembly is connected to the two pumping assemblies respectively. 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).

2. The air energy refrigerant filling pipeline connection device according to claim 1, wherein The pumping assembly comprises a mounting tube (20) fixedly mounted on an 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 an 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 an 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).

3. The air energy refrigerant filling pipeline connection device according to claim 2, 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).

4. The air energy refrigerant filling pipeline connection device according to claim 2, 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 being slidably connected, one end of each of the two transmission rods (38) extending to one side of the mounting frame (7) and being fixedly mounted with a same limiting plate (39), a bayonet (40) being provided at the top center position of the limiting plate (39), the exhaust pipe (25) passing through the bayonet (40), the limiting plate (39) being in contact with one side of the card cover (27), sliding holes being provided on the inner walls of both sides of the mounting frame (7), a movable plate (41) being slidably connected to the sliding holes, one side of the movable plate (41) extending to the outside of the mounting frame (7), and the other end of the transmission rod (38) being fixedly connected to the top of the corresponding movable plate (41); A clamping assembly is mounted 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).

5. The air energy refrigerant filling pipeline connection device according to claim 4, 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 a same positioning rod (45) is fixedly installed on the side of the two swing arms (44) 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), the top of the arc-shaped clamping plate (48) extends to the top of the support cover (46), the top of the arc-shaped clamping plate (48) is an arc-shaped curved surface, and a positioning opening is opened at the top of one side of the arc-shaped clamping plate (48), and the positioning rod (45) respectively passes through the two positioning openings 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 mounted 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); a second compression spring (51) is sleeved on the limiting rod (50) and is located on one side of the limiting tube (49); 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).

6. The air energy refrigerant filling pipeline connection device according to claim 1, characterized in that The pipeline mechanism includes a delivery pipe (10) fixedly installed on the inner wall of the other side of the shunt box (8). A protective pipe (9) is fixedly installed on the other side of the mounting frame (7). A heat insulation sleeve (901) is fixedly installed inside the protective pipe (9). One end of the delivery pipe (10) penetrates through the heat insulation sleeve (901) and is fixedly connected to the inner wall of the heat insulation sleeve (901). One end of the delivery pipe (10) and one end of the protective pipe (9) are fixedly installed with the same connecting ring (11). A threaded pipe (12) communicated with 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 installed with a docking head (13). One end of the docking head (13) extends into the rubber sealing ring (4) and is in close fit with the inner wall of the rubber sealing ring (4). A nut (15) is sleeved on the threaded pipe (12); An installation component is connected to the nut (15). A support retaining ring is fixedly sleeved on the docking pipe (3). The installation component is clamped with the support retaining ring, so that the docking head (13) is tightly inserted into the rubber sealing ring (4).

7. The air energy refrigerant filling pipeline connection device according to claim 6, characterized in that, The installation component includes a fixing plate (14) fixedly installed on one side of the nut (15). The threaded pipe (12) penetrates through the fixing plate (14). Installation rods (16) are fixedly installed on both sides of the fixing plate (14). One ends of the two installation rods (16) are fixedly installed with a U-shaped limiting plate (17). The U-shaped limiting plate (17) is sleeved on the docking pipe (3). The U-shaped limiting plate (17) is in contact with the side of the support retaining ring close to the on-off valve (2). An elastic buckle (18) is fixedly installed on the two installation rods (16). The elastic buckle (18) is movably clamped with the docking pipe (3). The elastic buckle (18) is in contact with the side of the support retaining ring far from the on-off valve (2).

8. A refrigerant filling device, characterized in that, The refrigerant filling device is made by the air energy refrigerant filling pipeline connection device according to any one of claims 1-7.

9. The method of using the air energy refrigerant filling pipeline connection device according to any one of claims 1-7, characterized in that, It includes the following steps: S1. Connection between the docking pipe and the sealing ring: First, the U-shaped limiting plate (17) is clamped on the docking pipe (3). Subsequently, the elastic buckle (18) moving along with the installation rod (16) is used to clamp the docking pipe (3). 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 it, realizing the lateral limit of the installation rod (16). Through the threaded transmission of the threaded pipe (12) and the nut (15), the threaded pipe (12) moves laterally, and the docking head (13) is tightly inserted into the rubber sealing ring (4); S2. Connection between the positioning cover and the exhaust pipe: Push the positioning rod (45), drive the swing arm (44) to rotate around the support shaft (43), and then drive the transmission ring (47) to perform an arc-shaped movement. Through the cooperation of the transmission plate (42), the moving plate (41) and the transmission rod (38) move accordingly, so that the limiting plate (39) approaches the mounting bracket (7). When the positioning rod (45) contacts the arc surface of the arc-shaped clamping plate (48), push the arc-shaped clamping plate (48) to move horizontally, compress the second compression spring (51). When the positioning rod (45) is aligned with the positioning port, the limiting plate (39) presses the cover (27), and the second compression spring (51) pushes the arc-shaped clamping plate (48) in the reverse direction, so that the positioning rod (45) is stuck into the positioning port, stably limiting the connection between the cover (27) and the exhaust pipe (25); S3. Delivery of the refrigerant medium: Open the on-off valve (2), and the refrigerant medium in the refrigerant storage tank (1) flows through the docking pipe (3), the docking head (13), the threaded pipe (12), the delivery pipe (10) to the distribution box (8). Under the action of the gas delivery pipe (19), the refrigerant medium is delivered to the U-shaped pipe (24), and then enters the intake pipe (28) through the exhaust pipe (25), and finally reaches the air source heat pump air conditioner; S4. Refrigerant boosting delivery when the air pressure is insufficient: If the air pressure in the refrigerant storage tank (1) is insufficient, start the drive motor (34) to rotate the curved rod (35), drive the power pipe (21) to alternately move horizontally back and forth. When the power pipe (21) approaches the support pipe (23), a suction force is generated inside it, so that the spherical plate (31) in the installation pipe (20) is separated from the fixed sleeve (29) under the action of air pressure, and the refrigerant medium flows into the power pipe (21). On the contrary, when the power pipe (21) approaches the installation pipe (20), it presses the spherical plate (31), making it separate from the fixed sleeve (29), and the refrigerant medium enters the support pipe (23) through the insertion pipe (22), and finally is delivered to the intake pipe (28) through the U-shaped pipe (24) and the exhaust pipe (25), boosting and filling the refrigerant medium for the air source heat pump air conditioner.

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