A cycle refrigeration apparatus

Abstract

The application belongs to the technical field of air conditioners, and particularly relates to a circulating refrigeration device which comprises a valve body, an air inlet pipe fixed to the top of the valve body, an air return pipe fixed to the bottom of the valve body, connecting pipes arranged on the two sides of the air return pipe and fixed to the valve body, a pair of housings arranged outside the valve body, a water inlet pipe fixed to the top of each of the housings, connecting and separating assemblies arranged between the two housings, water absorbing cotton arranged between the two housings and the valve body, and a pilot valve arranged on the side of one of the housings away from the valve body. The water absorbing cotton filled with water directly contacts the copper valve body, so that the valve body is cooled, thereby avoiding the melting of components such as pistons or reversing blocks in the valve body due to high temperature during welding because of the strong heat conduction effect of copper, and thus avoiding the failure of the valve body to work normally after welding.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically a circulating refrigeration device. Background Technology

[0002] Air conditioners, as a common electrical appliance, work on the principle of thermodynamic refrigeration cycle. They achieve heat transfer through the phase change of refrigerant, thereby regulating indoor temperature. Their core process can be divided into four stages: compression, condensation, throttling, and evaporation. Most air conditioners today have both cooling and heating capabilities, and their mode switching is inseparable from the help of a four-way valve.

[0003] The existing four-way valve mainly consists of an electromagnetic pilot valve and a four-way reversing valve. The four ports of the four-way reversing valve are connected to the compressor exhaust pipe, suction pipe, indoor heat exchanger and outdoor heat exchanger respectively. The main working principle is to control the movement of the pilot slide valve by turning the electromagnetic coil on and off, and use the pressure difference at both ends of the piston to drive the main slide valve to switch the refrigerant flow direction, so as to realize the conversion between cooling and heating modes.

[0004] The four-way valve mentioned above is generally connected to the condenser, evaporator and compressor of the air conditioner by welding. However, since the piston and connecting block inside the four-way valve contain rubber or plastic, and the valve body itself is made of copper with high thermal conductivity, the rubber and plastic parts inside are easily damaged by high temperature during the welding process.

[0005] Therefore, the present invention provides a circulating refrigeration device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A circulating refrigeration device according to this invention includes a dual-chamber full-liquid supply module and a four-way valve. The four-way valve includes a valve body; an inlet pipe is fixedly connected to the top of the valve body; a return pipe is fixedly connected to the bottom of the valve body; connecting pipes are provided on both sides of the return pipe, and the connecting pipes are fixedly connected to the valve body; a pair of housings are sleeved on the outer side of the valve body; a water inlet pipe is fixedly connected to the top of the housing; the two housings are connected and separated by a connecting component; absorbent cotton is provided between the two housings and the valve body, and absorbs... The absorbent cotton is made of a high-temperature resistant material; a pilot valve is provided on one of the housings away from the valve body; capillary tubes are installed at both ends of the pilot valve, the inlet pipe, the return pipe, and the valve body; the return pipe and the connecting pipe are fixedly connected to a valve seat at one end inside the valve body; pistons are provided on both sides of the valve seat; a sliding plate is fixedly connected between the two pistons; through holes are opened at both ends on the top surface of the sliding plate; a reversing block is fixedly connected between the two through holes on the top surface of the sliding plate. After welding, the absorbent cotton is removed, and heat insulation cotton is placed between the two housings and the valve body.

[0008] Preferably, the connecting assembly includes two pairs of connecting seats; both pairs of connecting seats are symmetrically fixed to the top and bottom of one of the housings; a pair of symmetrically arranged elastic plates are fixed to the end of each connecting seat near the other housing, and the distance between the two elastic plates near the end of the connecting seat is smaller than the distance between the ends of the two elastic plates away from the connecting seat; a limiting block is fixed to the surface of the two elastic plates that are far from each other; a limiting cylinder is fixed to the surface of the housing that is not fixed to the connecting seat at the corresponding position of the connecting seat.

[0009] Preferably, rubber strips are fixedly connected to the edges of the shells on the sides that are close to each other; limit rings are fixedly connected to the surfaces of the air inlet pipe and the connecting pipe, and the top surface of the limit rings is adapted to the bottom surface of the two shells.

[0010] Preferably, a double-ended stud is rotatably connected to the surface of the return pipe near the bottom, and both ends of the double-ended stud are provided with cross grooves; sleeves are threaded to both ends of the double-ended stud; the two sleeves are respectively fixed to the two connecting pipes.

[0011] Preferably, a connecting block is installed at both ends inside the housing; a rotating rod is rotatably connected between the two connecting blocks; a plurality of uniformly arranged arc-shaped plates are fixedly connected to the surface of the rotating rod, and the arc-shaped plates are made of elastic material; a striking ball is fixedly connected to the end of the arc-shaped plate away from the rotating rod, and the striking ball is made of elastic material; a driving rod is rotatably connected to the outer wall of the housing at the rotating rod; the driving rod is made of magnet; the end of the rotating rod near the driving rod is also made of magnet.

[0012] Preferably, each of the two shells is fixedly connected to a receiving cylinder on the side away from each other; the receiving cylinder is in communication with the shell and is adapted to the rotating rod, the arc plate and the striking ball; the connecting block is slidably connected to the inner wall of the shell.

[0013] Preferably, baffles are fixedly connected to both ends of the inner wall of the housing at the corresponding positions of the drive rod; clamps are fixedly connected to both ends of the baffles, and the clamps are made of elastic material; protrusions are fixedly connected to the sides of the two clamps that are close to each other; a groove is formed on the surface of the connecting block at the corresponding position of the protrusion, and the groove is adapted to the protrusion.

[0014] Preferably, a pair of symmetrically arranged fixing seats are fixedly connected to both ends of the receiving cylinder on the inner wall of the housing; the fixing seat at the bottom is fixedly connected to an elastic band, and the elastic band is slidably connected to the fixing seat at the top; a pair of symmetrically arranged fixing blocks are fixedly connected to the side surface of the elastic band away from the receiving cylinder; the connecting block has a slot at the corresponding position of the fixing block.

[0015] Preferably, each of the housing surfaces is fixedly connected to a mounting base at a position corresponding to the drive rod; a rotating plate is rotatably connected to the surface of one of the mounting bases; a main gear is fixedly connected to the surface of each drive rod; a secondary gear is rotatably connected to the end of the rotating plate away from the drive rod; the main gear and the secondary gear are connected by a gear assembly.

[0016] Preferably, a plug rod is slidably connected to the end of the rotating plate away from the mounting base to which it is rotatably connected; a socket is fixedly connected to the surface of the housing at the position corresponding to the plug rod.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The circulating refrigeration equipment of the present invention uses water-absorbing cotton soaked in water to directly contact the copper valve body, thereby cooling the valve body and avoiding the melting of internal components such as pistons or reversing blocks due to high temperature during the welding process, which would otherwise cause the welded valve body to malfunction.

[0019] 2. In the circulating refrigeration device of the present invention, after the limiting block with elastic sheet surface passes through the limiting cylinder, the pair of elastic sheets open and the limiting block is fastened to the end of the limiting cylinder away from the connecting seat, thereby quickly fixing the two shells, thereby reducing the difficulty of operation for the user and improving the ease of use of the embodiment of the present invention. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a schematic diagram of the valve body in this invention;

[0023] Figure 3 This is a cross-sectional view of the valve body in this invention;

[0024] Figure 4 This is a schematic diagram of the skateboard structure in this invention;

[0025] Figure 5 This is a schematic diagram of the shell structure in this invention;

[0026] Figure 6 This is a schematic diagram of the water inlet pipe in this invention;

[0027] Figure 7 This is a schematic diagram of the connecting seat in this invention;

[0028] Figure 8 This is a schematic diagram of the connecting block in this invention;

[0029] Figure 9 This is a schematic diagram of the rotating plate in this invention;

[0030] Figure 10 This is a schematic diagram of the dual-chamber full-liquid supply module.

[0031] In the diagram: 1. Valve body; 2. Inlet pipe; 3. Return pipe; 4. Connecting pipe; 5. Housing; 6. Water inlet pipe; 7. Pilot valve; 8. Capillary tube; 9. Valve seat; 10. Piston; 101. Slide plate; 11. Through hole; 12. Reversing block; 13. Connecting seat; 14. Elastic sheet; 15. Limiting block; 16. Limiting cylinder; 17. Rubber belt; 18. Limiting ring; 19. Double-ended stud; 20. Sleeve 21. Cylinder; 22. Connecting block; 23. Rotating rod; 24. Arc plate; 25. Striking ball; 26. Drive rod; 27. Receiving cylinder; 28. Baffle; 29. ​​Clamping plate; 30. Protrusion; 31. Groove; 32. Fixing seat; 33. Elastic band; 34. Fixing block; 35. Slot; 36. Mounting seat; 37. Rotating plate; 38. Main gear; 39. Secondary gear; 40. Insert rod; 51. Socket. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figures 1 to 5As shown in the embodiment of the present invention, a circulating refrigeration device includes a dual-chamber full-liquid supply module and a four-way valve, both of which are existing technologies and will not be described in detail. The four-way valve includes a valve body 1; an inlet pipe 2 is fixedly connected to the top of the valve body 1; a return pipe 3 is fixedly connected to the bottom of the valve body 1; connecting pipes 4 are provided on both sides of the return pipe 3, and the connecting pipes 4 are fixedly connected to the valve body 1; a pair of housings 5 ​​are sleeved on the outside of the valve body 1; a water inlet pipe 6 is fixedly connected to the top of the housing 5; the two housings 5 ​​are connected and separated by a connecting component; absorbent cotton, made of high-temperature resistant material, is provided between the two housings 5 ​​and the valve body 1; a pilot valve 7 is provided on the side of one of the housings 5 ​​away from the valve body 1; the ... The pilot valve 7 is equipped with capillary tubes 8 at both ends of the inlet pipe 2, the return pipe 3, and the valve body 1; the return pipe 3 and the connecting pipe 4 are fixedly connected to a valve seat 9 at one end inside the valve body 1; pistons 10 are provided on both sides of the valve seat 9; a sliding plate 101 is fixedly connected between the two pistons 10; a through hole 11 is opened at both ends on the top surface of the sliding plate 101; a reversing block 12 is fixedly connected between the two through holes 11 on the top surface of the sliding plate 101. After welding, the absorbent cotton is removed, and heat insulation cotton is placed between the two housings 5 ​​and the valve body 1; during operation, when switching between cooling and heating modes is required, the pilot valve 7 is used to control the high-temperature and high-pressure gas at the inlet pipe 2 to enter one end of the valve body 1 through the capillary tube 8, thereby pushing... The piston 10 and slide plate 101 inside the valve body 1 slide, causing the reversing block 12 on the surface of the slide plate 101 to engage with the gas pipe 3 and a connecting pipe 4. The intake pipe 2 is connected to another connecting pipe 4 through the through hole 11 on the surface of the slide plate 101. Thus, by sliding the slide plate 101 on the valve seat 9, the destination of the high-temperature and high-pressure gas discharged from the compressor can be controlled, thereby realizing the switching of cooling and heating modes. However, after long-term use, impurities in the entire circulating refrigeration equipment will accumulate in the four-way valve, causing wear or blockage, which will affect the mode switching of the circulating refrigeration equipment. Therefore, the four-way valve needs to be replaced. Before replacement using the embodiment of the present invention, the user needs to separate the two housings 5. The user places water-soaked cotton into the inside of housing 5, then fastens the two housings 5 ​​together and secures them with connecting components. The user then connects the connecting pipe 4, return pipe 3, and inlet pipe 2 to other components in the circulating cooling equipment, and then welds the connection area. This allows the water-soaked cotton to directly contact the copper valve body 1, thereby cooling the valve body 1. This prevents components such as piston 10 or reversing block 12 from melting due to high temperature during the welding process, which would otherwise cause the welded valve body 1 to malfunction. After welding, the user can remove the water-soaked cotton and place heat insulation cotton in housing 5 to reduce the impact of the external environment on the four-way valve.

[0034] like Figures 5 to 7 As shown, the connecting assembly includes two pairs of connecting seats 13; both pairs of connecting seats 13 are symmetrically fixed to the top and bottom of one of the housings 5; a pair of symmetrically arranged elastic pieces 14 are fixed to one end of each connecting seat 13 near the other housing, and the distance between the two elastic pieces 14 near the connecting seat 13 is smaller than the distance between their ends away from the connecting seat 13; a limiting block 15 is fixed to the surface of the two elastic pieces 14 on the side away from each other; a limiting cylinder 16 is fixed to the surface of the housing 5 not fixed to the connecting seat 13 at the corresponding position of the connecting seat 13; during operation, when the user needs to fasten the two... When the housings 5 ​​are together and fixed, the user needs to align the connecting seat 13 and the limiting cylinder 16, and then fasten the two housings 5 ​​together. During the fastening process, the user needs to first squeeze the end of the pair of elastic pieces 14 away from the connecting seat 13 so that it can pass through the limiting cylinder 16. After the limiting block 15 on the surface of the elastic piece 14 passes through the limiting cylinder 16, the pair of elastic pieces 14 open and the limiting block 15 is fastened to the end of the limiting cylinder 16 away from the connecting seat 13, thereby quickly fixing the two housings 5, thereby reducing the difficulty of operation for the user and improving the ease of use of the embodiment of the present invention.

[0035] like Figures 1 to 2 As shown, rubber strips 17 are fixedly connected to the edges of the two housings 5 ​​on their adjacent sides; limiting rings 18 are fixedly connected to the surfaces of the air inlet pipe 2 and the connecting pipe 4, and the top surface of the limiting rings 18 is adapted to the bottom surface of the two housings 5; during operation, before the two housings 5 ​​are fastened together, the user needs to ensure that the two housings 5 ​​are both located on the top of the limiting rings 18, thereby restricting the position of the housings 5 ​​and ensuring that the inner wall of the housings 5 ​​is consistent with the surface of the valve body 1, thereby avoiding excessive compression of the absorbent cotton, which would cause the water in some areas of the absorbent cotton to be squeezed out, resulting in poor heat dissipation in that area. At the same time, the rubber strips 17 at the edges of the housings 5 ​​can also improve the sealing performance after the two housings 5 ​​are fastened together, reducing the probability of water leakage from the housings 5.

[0036] like Figures 5 to 6 As shown, a double-ended stud 19 is rotatably connected to the surface of the return pipe 3 near the bottom, and both ends of the double-ended stud 19 are provided with cross grooves; sleeves 20 are threaded to both ends of the double-ended stud 19; the two sleeves 20 are respectively fixed to the two connecting pipes 4; during operation, before welding the four-way valve, the user needs to adjust the distance between the connecting pipe 4 and the return pipe 3 according to the internal piping of the refrigeration equipment. At this time, the user can use a screwdriver to tighten the double-ended stud 19, and then the double-ended stud 19 drives the two sleeves 20 to move closer or further away from each other, thereby driving the two connecting pipes 4 to move closer or further away from each other, so that the distance between the two connecting pipes 4 is adapted to the internal piping of the refrigeration equipment.

[0037] like Figure 6 and Figure 8As shown, connecting blocks 21 are installed at both ends inside the housing 5; a rotating rod 22 is rotatably connected between the two connecting blocks 21; a plurality of uniformly arranged arc-shaped plates 23 are fixedly connected to the surface of the rotating rod 22, and the arc-shaped plates 23 are made of elastic material; a striking ball 24 is fixedly connected to the end of the arc-shaped plate 23 away from the rotating rod 22, and the striking ball 24 is made of elastic material; a driving rod 25 is rotatably connected to the outer wall of the housing 5 at the rotating rod 22; the driving rod 25 is made of magnet; the end of the rotating rod 22 near the driving rod 25 is also made of magnet; during operation, after a long period of time, Welding slag produced during the welding process can easily enter the valve body 1, which can obstruct the sliding of the slide plate 101 on the valve seat 9. At this time, the user only needs to drive the drive rod 25 to rotate through the external motor, and then the drive rod 25 drives the rotating rod 22 inside the housing 5 to rotate through the magnetic force. The rotating rod 22 then drives the arc plate 23 and the elastic ball on its surface to rotate and continuously strike the valve body 1. At this time, the user can control the slide plate 101 inside the valve body 1 to slide through the pilot valve 7, which can cooperate with the vibration of the elastic ball striking the valve body 1 to remove the impurities between the slide plate 101 and the valve seat 9, so that the slide plate 101 is no longer obstructed.

[0038] like Figure 6 and Figure 8 As shown, each of the two housings 5 ​​is fixedly connected to a receiving cylinder 26 on the side away from each other; the receiving cylinder 26 is connected to the housing 5 and is adapted to the rotating rod 22, the arc plate 23 and the striking ball 24; the connecting block 21 is slidably connected to the inner wall of the housing 5; during operation, when the rotating rod 22 needs to be used, the user can slide the pair of connecting blocks 21 so that the connecting block 21 drives the rotating rod 22 into the receiving cylinder 26, thereby making space inside the housing 5 so that the heat insulation cotton can be more easily stuffed between the housing 5 and the valve body 1.

[0039] like Figure 6 and Figure 8As shown, baffles 27 are fixedly connected to both ends of the inner wall of the housing 5 at positions corresponding to the drive rod 25; clamps 28 are fixedly connected to both ends of the baffles 27, and the clamps 28 are made of elastic material; protrusions 29 are fixedly connected to the sides of the two clamps 28 that are close to each other; a groove 30 is formed on the surface of the connecting block 21 at the position corresponding to the protrusion 29, and the groove 30 is adapted to the protrusion 29; during operation, when the user needs to use the rotating rod 22, the user needs to slide the connecting block 21 to move it to the baffle 27 and press the baffle 27. The clamping plate 28 allows the connecting block 21 to enter between the pair of clamping plates 28. At this time, the protrusion 29 on the surface of the clamping plate 28 will be inserted into the groove 30 on the surface of the connecting block 21, thereby restricting the connecting block 21 and enabling the connecting block 21 to align with the drive rod 25 outside the housing 5. Thus, the drive rod 25 can be connected to the rotating rod 22 inside the housing 5 by magnetic force, thereby ensuring that the drive rod 25 can drive the rotating rod 22 normally, while the rotating rod 22 will not move in position due to the elastic ball being driven by the arc plate 23 striking the valve body 1.

[0040] like Figure 6 and Figure 8 As shown, a pair of symmetrically arranged fixing seats 31 are fixedly connected to both ends of the receiving cylinder 26 on the inner wall of the housing 5; the fixing seat 31 at the bottom is fixedly connected to an elastic band 32, and the elastic band 32 is slidably connected to the fixing seat 31 at the top; a pair of symmetrically arranged fixing blocks 33 are fixedly connected to the side surface of the elastic band 32 away from the receiving cylinder 26; the connecting block 21 has a slot 34 at the corresponding position of the fixing block 33; during operation, when the user retracts the rotating rod 22 into the receiving slot, the connecting block 21 will squeeze the elastic band 32 between the fixing seats 31, and together with the elastic band 31, the elastic band 32 will be compressed. 2. When the elastic band 32 is pressed into the receiving cylinder 26, the elastic band 32 will bend and wrap around the surface of the connecting block 21. At this time, the fixing block 33 on the surface of the elastic band 32 will also be inserted into the slot 34 on the surface of the connecting block 21, thereby fixing the connecting block 21 and preventing the connecting block 21 and the rotating rod 22 from accidentally coming out of the receiving cylinder 26. When the user needs to remove the rotating rod 22, the user only needs to pull the top of the elastic band 32 to push the connecting block 21 out of the receiving cylinder 26, thus making it convenient for the user to remove the rotating rod 22.

[0041] like Figure 1 , Figure 5 and Figure 9As shown, mounting bases 35 are fixedly connected to the surface of the housing 5 at positions corresponding to the drive rod 25; a rotating plate 36 is rotatably connected to the surface of one of the mounting bases 35; a main gear 37 is fixedly connected to the surface of the drive rod 25; a secondary gear 38 is rotatably connected to the end of the rotating plate 36 away from the drive rod 25; the main gear 37 and the secondary gear 38 are connected by a gear assembly; during operation, before the user needs to rotate the rotating rod 22 by driving the drive rod 25, the user needs to rotate the rotating plate 36 so that the secondary gear 38 away from its rotational connection point meshes with the main gear 37 on the surface of the drive rod 25, while the secondary gear 38 near the rotational connection point of the rotating plate 36 has already meshed with the main gear 37 on that side, and the two secondary gears 38 are connected by a gear set, so when the user rotates one side of the drive rod 25, the other side of the drive rod 25 will also rotate synchronously. Thus, the user only needs to rotate one side of the drive rod 25 to drive the rotating rods 22 on both sides to rotate together, thereby reducing the operational difficulty of the embodiment of the present invention and improving the ease of use of the embodiment of the present invention.

[0042] like Figure 1 , Figure 5 and Figure 9 As shown, a rod 39 is slidably connected to one end of the rotating plate 36 away from the mounting base 35 to which it is rotatably connected; a socket 40 is fixedly connected to the surface of the housing 5 at the corresponding position of the rod 39; during operation, when the user rotates the rotating plate 36, so that the secondary gear 38 meshes with the main gear 37, the user can slide the rod 39 to insert it into the socket 40, thereby fixing the position of the rotating plate 36. Thus, the user does not need to hold the rotating plate 36 all the time, thereby freeing up the user's hands and reducing the difficulty of operation.

[0043] During operation, the condenser is connected to one of the connecting pipes 4 via an expansion valve, while the evaporator is connected to the other connecting pipe 4. The inlet pipe 2 and the return pipe 3 are connected to the outlet and inlet ends of the compressor, respectively. When switching between cooling and heating modes, the pilot valve 7 controls the high-temperature, high-pressure gas at the inlet pipe 2 to enter one end of the valve body 1 through the capillary tube 8. This pushes the piston 10 and the slide plate 101 inside the valve body 1 to slide, causing the reversing block 12 on the surface of the slide plate 101 to connect the return pipe 3 and one connecting pipe 4. The inlet pipe 2 is connected to the other connecting pipe 4 through the through hole 11 on the surface of the slide plate 101. Thus, by sliding the slide plate 101 on the valve seat 9, the destination of the high-temperature, high-pressure gas discharged from the compressor can be controlled, thereby achieving the switching between cooling and heating modes. However, after prolonged use, impurities from the entire refrigeration cycle will accumulate inside the four-way valve, causing wear or blockage. This can affect the mode switching of the circulating refrigeration equipment, thus requiring the replacement of the four-way valve. Before replacement using this embodiment of the invention, the user needs to separate the two housings 5 ​​and place water-absorbing cotton soaked in water inside the housings 5. Then, the two housings 5 ​​are fastened together and fixed using connecting components. The user then connects the connecting pipe 4, return pipe 3, and inlet pipe 2 to other components in the circulating cooling equipment, and then welds the connection area. This allows the water-absorbing cotton to directly contact the copper valve body 1, thereby cooling the valve body 1. This prevents components inside the valve body 1, such as the piston 10 or reversing block 12, from melting due to high temperatures during welding, which would otherwise prevent the welded valve body 1 from functioning properly. After welding, the user can remove the water-absorbing cotton and place insulation cotton in the housing 5 to reduce the impact of the external environment on the four-way valve.

[0044] When the user needs to fasten and fix the two housings 5 ​​together, the user needs to align the connecting seat 13 and the limiting cylinder 16, and then fasten the two housings 5 ​​together. During the fastening process, the user needs to first squeeze the end of the pair of elastic pieces 14 away from the connecting seat 13 so that it can pass through the limiting cylinder 16. After the limiting block 15 on the surface of the elastic piece 14 passes through the limiting cylinder 16, the pair of elastic pieces 14 open and the limiting block 15 is fastened to the end of the limiting cylinder 16 away from the connecting seat 13, thereby quickly fixing the two housings 5, thereby reducing the user's operating difficulty and improving the ease of use of the embodiment of the present invention.

[0045] Before the two housings 5 ​​are fastened together, the user needs to ensure that both housings 5 ​​are located at the top of the limiting ring 18, thereby restricting the position of the housings 5 ​​and ensuring that the inner wall of the housing 5 is consistent with the surface of the valve body 1. This prevents the absorbent cotton from being excessively squeezed, which would cause water to be squeezed out in some areas of the absorbent cotton, resulting in poor heat dissipation in that area. At the same time, the rubber strip 17 at the edge of the housing 5 can also improve the sealing performance after the two housings 5 ​​are fastened together, reducing the probability of water leakage from the housings 5.

[0046] Before welding the four-way valve, the user needs to adjust the distance between the connecting pipe 4 and the return pipe 3 according to the internal piping of the refrigeration equipment. At this time, the user can use a screwdriver to tighten the double-ended stud 19, and then the double-ended stud 19 will drive the two sleeves 20 to move closer or further away from each other, thereby driving the two connecting pipes 4 to move closer or further away from each other, so that the distance between the two connecting pipes 4 can be adapted to the internal piping of the refrigeration equipment.

[0047] After a long period of time, the welding slag produced during the welding process can easily enter the valve body 1, which will cause the sliding plate 101 on the valve seat 9 to be obstructed. At this time, the user only needs to drive the drive rod 25 to rotate through the external motor, and then the drive rod 25 will drive the rotating rod 22 inside the housing 5 to rotate through the magnetic force. The rotating rod 22 will then drive the arc plate 23 and the elastic ball on its surface to rotate and continuously strike the valve body 1. At this time, the user can control the sliding plate 101 inside the valve body 1 to slide through the pilot valve 7, which can cooperate with the vibration of the elastic ball striking the valve body 1 to remove the impurities between the sliding plate 101 and the valve seat 9, so that the sliding plate 101 is no longer obstructed.

[0048] When the rotating rod 22 is needed, the user can slide the pair of connecting blocks 21 so that the connecting blocks 21 drive the rotating rod 22 into the receiving cylinder 26, thereby making room inside the housing 5 so that the heat insulation cotton can be more easily stuffed between the housing 5 and the valve body 1.

[0049] When the user needs to use the rotating rod 22, the user needs to slide the connecting block 21 to move it to the baffle 27 and squeeze the clamp 28 at the baffle 27 so that the connecting block 21 can enter between the pair of clamps 28. At this time, the protrusion 29 on the surface of the clamp 28 will be inserted into the groove 30 on the surface of the connecting block 21, thereby restricting the connecting block 21 so that the connecting block 21 can be aligned with the drive rod 25 outside the housing 5. Thus, the drive rod 25 can be connected to the rotating rod 22 inside the housing 5 by magnetic force, thereby ensuring that the drive rod 25 can drive the rotating rod 22 normally, while the rotating rod 22 will not move in position due to the elastic ball being driven by the arc plate 23 striking the valve body 1.

[0050] When the user retracts the rotating rod 22 into the receiving slot, the connecting block 21 will squeeze the elastic band 32 between the fixing bases 31 and press it into the receiving cylinder 26 together with the elastic band 32. When the elastic band 32 is pressed into the receiving cylinder 26, the elastic band 32 will bend and wrap around the surface of the connecting block 21. At this time, the fixing block 33 on the surface of the elastic band 32 will also insert into the slot 34 on the surface of the connecting block 21, thereby fixing the connecting block 21 and preventing the connecting block 21 and the rotating rod 22 from accidentally coming out of the receiving cylinder 26. When the user needs to remove the rotating rod 22, the user only needs to pull the top of the elastic band 32 to push the connecting block 21 out of the receiving cylinder 26, thus making it convenient for the user to remove the rotating rod 22.

[0051] Before the user needs to rotate the rotating rod 22 via the drive rod 25, the user needs to rotate the rotating plate 36 so that the secondary gear 38 away from its rotating connection point meshes with the main gear 37 on the surface of the drive rod 25. The secondary gear 38 near the rotating connection point of the rotating plate 36 is already meshed with the main gear 37 on that side, and the two secondary gears 38 are connected by a gear set. Therefore, when the user rotates one side of the drive rod 25, the other side of the drive rod 25 will also rotate synchronously. Thus, the user only needs to rotate one side of the drive rod 25 to drive the rotating rods 22 on both sides to rotate together, thereby reducing the operation difficulty of the embodiment of the present invention and improving the ease of use of the embodiment of the present invention.

[0052] When the user rotates the rotating plate 36, causing the secondary gear 38 to mesh with the main gear 37, the user can slide the rod 39 into the socket 40 to fix the position of the rotating plate 36. Thus, the user does not need to hold the rotating plate 36 all the time, freeing up both hands and reducing the difficulty of operation.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A recirculating refrigeration apparatus comprising a dual-cavity flooded liquid supply module and a four-way valve, characterized by: The four-way valve includes a valve body; an air inlet pipe is fixedly connected to the top of the valve body; a return air pipe is fixedly connected to the bottom of the valve body; connecting pipes are provided on both sides of the return air pipe, and the connecting pipes are fixedly connected to the valve body; a pair of housings are sleeved on the outside of the valve body; a water inlet pipe is fixedly connected to the top of the housings; the two housings are connected and separated by a connecting component; absorbent cotton is provided between the two housings and the valve body; a pilot valve is provided on the side of one of the housings away from the valve body; capillary tubes are installed on both ends of the pilot valve, the air inlet pipe, the return air pipe, and the valve body; a valve seat is fixedly connected to one end of the return air pipe and the connecting pipe inside the valve body; pistons are provided on both sides of the valve seat; a sliding plate is fixedly connected between the two pistons; a through hole is opened at both ends on the top surface of the sliding plate; a reversing block is fixedly connected between the two through holes on the top surface of the sliding plate. After welding, the absorbent cotton is removed, and heat insulation cotton is placed between the two housings and the valve body.

2. The circulating refrigeration equipment according to claim 1, characterized in that: The connecting assembly includes two pairs of connecting seats; both pairs of connecting seats are symmetrically fixed to the top and bottom of one of the housings; a pair of symmetrically arranged elastic plates are fixed to one end of each connecting seat near the other housing; a limiting block is fixed to the side surface of the two elastic plates that are far apart from each other; a limiting cylinder is fixed to the housing surface that is not fixed to the connecting seat at the corresponding position of the connecting seat.

3. The circulating refrigeration equipment according to claim 2, characterized in that: Rubber strips are fixedly connected to the edges of the two housings on their adjacent sides; limit rings are fixedly connected to the surfaces of the air inlet pipe and the connecting pipe, and the top surface of the limit rings is adapted to the bottom surface of the two housings.

4. The circulating refrigeration equipment according to claim 1, characterized in that: The return pipe is rotatably connected to a double-ended stud near the bottom, and both ends of the double-ended stud are provided with cross grooves; both ends of the double-ended stud are threaded with sleeves; the two sleeves are respectively fixedly connected to two connecting pipes.

5. A circulating refrigeration device according to claim 1, characterized in that: Connecting blocks are installed at both ends inside the housing; a rotating rod is rotatably connected between the two connecting blocks; multiple evenly arranged arc-shaped plates made of elastic material are fixedly connected to the surface of the rotating rod; a striking ball made of elastic material is fixedly connected to the end of the arc-shaped plate away from the rotating rod; a driving rod is rotatably connected to the outer wall of the housing at the rotating rod; the driving rod is made of magnet; the end of the rotating rod near the driving rod is also made of magnet.

6. A circulating refrigeration device according to claim 5, characterized in that: Each of the two shells is fixedly connected to a receiving cylinder on the side away from each other; the receiving cylinder is in communication with the shell and is adapted to the rotating rod, the arc plate and the striking ball; the connecting block is slidably connected to the inner wall of the shell.

7. A circulating refrigeration device according to claim 6, characterized in that: The inner wall of the housing is fixedly connected to baffles at the corresponding positions of the drive rod at both ends; both ends of the baffles are fixedly connected to clamps, and the clamps are made of elastic material; protrusions are fixedly connected to the sides of the two clamps that are close to each other; the surface of the connecting block has a groove at the corresponding position of the protrusion, and the groove is adapted to the protrusion.

8. A circulating refrigeration device according to claim 7, characterized in that: The inner wall of the housing is fixed to a pair of symmetrically arranged fixing seats at both ends of the receiving cylinder; the fixing seat at the bottom is fixed to an elastic band, and the elastic band is slidably connected to the fixing seat at the top; a pair of symmetrically arranged fixing blocks are fixed to the side surface of the elastic band away from the receiving cylinder; the connecting block has a slot at the corresponding position of the fixing block.

9. A circulating refrigeration device according to claim 8, characterized in that: Mounting seats are fixedly connected to the surface of the housing at the corresponding positions of the drive rod; a rotating plate is rotatably connected to the surface of one of the mounting seats; a main gear is fixedly connected to the surface of the drive rod; a secondary gear is rotatably connected to the end of the rotating plate away from the drive rod; the main gear and the secondary gear are connected by a gear assembly.

10. A circulating refrigeration device according to claim 9, characterized in that: A plug rod is slidably connected to one end of the rotating plate away from the mounting base to which it is rotatably connected; a socket is fixedly connected to the surface of the housing at the position corresponding to the plug rod.

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