A multi-connected air conditioner switching device and a multi-connected air conditioner system

Abstract

The present invention relates to the field of air conditioners, and provides a multi-split air conditioner switching device and a multi-split air conditioner system, including a shell, a delivery pipeline, a gas-liquid separator and a heat exchange component are arranged inside the shell, the gas-liquid separator is provided with an inlet, a first outlet and a second outlet, one end of the heat exchange component is connected to the second outlet, and the delivery pipeline includes a first U-shaped tube and a second U-shaped tube. The present invention has the following beneficial effects: through the design of a telescopic connection component, the connection between several delivery single tubes can be realized, and rapid disassembly can be achieved, thereby meeting the use and maintenance requirements of the delivery pipeline. At the same time, through the design of a connection mechanism, a connecting tube can be added between two adjacent pipe connection seats to perform a connecting action, and the connection and fixation of the pipe connection seat and the connecting tube can be realized through the connection component, and at the same time, a quick disassembly action can be achieved when disassembling the connection relationship between the pipe connection seat and the connecting tube.

Description

Technical Field

[0001] The invention relates to a multi-connected air conditioner switching device and a multi-connected air conditioner system, belonging to the field of air conditioners. Background Art

[0002] In the switching device of the air conditioner, the water receiving pan is usually arranged inside the base, and the heat exchange components are installed above the water receiving pan so that the water receiving pan can collect the condensed water generated by the heat exchange components. In addition, the air conditioner switching device can realize the independent cooling and heating of different indoor units through the valve body and related controls. In addition, many existing small switching devices are foamed inside the box, making the entire refrigeration component impossible to repair.

[0003] Prior art, such as the switching device for a multi-split air conditioner and the multi-split air conditioner having the same disclosed in Chinese patent application CN201610709381.X, improves the on-site installation efficiency of the switching device by reducing the splicing between multiple switching devices. At the same time, the entire switching device is hierarchical and modular, which provides great convenience for on-site maintenance. However, the delivery pipelines are relatively numerous. When in use, the delivery pipelines are easily blocked and damaged. At this time, the delivery pipelines need to be repaired. However, the overall structure of the delivery pipelines is relatively complex and is not easy to disassemble during replacement. At the same time, the entire pipeline needs to be replaced during replacement, and the replacement cost is relatively high. At the same time, when the pipeline is repaired, the pipeline needs to be shut down for processing, which makes the pipeline unable to operate normally. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a multi-split air conditioning switching device and a multi-split air conditioning system.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A multi-split air conditioner switching device comprises a shell, wherein a delivery pipeline, a gas-liquid separator and a heat exchange component are arranged inside the shell, wherein the gas-liquid separator is provided with an inlet, a first outlet and a second outlet, one end of the heat exchange component is communicated with the second outlet, the delivery pipeline comprises a first U-shaped tube and a second U-shaped tube, the first U-shaped tube is communicated with the second U-shaped tube, the first U-shaped tube is connected with the first outlet, the delivery pipeline comprises a plurality of delivery single tubes, two adjacent delivery single tubes are connected and fixed by a telescopic connection assembly, a communication hole is provided on the outer surface of the side of the delivery single tube, a pipeline connection seat adapted to the communication hole is fixed on the delivery single tube, a flow hole connected to the communication hole is provided in the middle of the pipeline connection seat, and one end of the flow hole connected with the communication hole is connected to two blocking semicircular plates by a spring hinge. , a sealing plug matching the flow hole is fixed on the end of the sealing semicircular plate, and an end flaring groove matching the sealing semicircular plate is opened at the end of the communicating hole, and the outer surface of the pipe connecting seat is connected to a protective cover plate by a spring hinge, and a connecting pipe is connected between two adjacent pipe connecting seats, and the connecting pipe and the pipe connecting seat are connected and fixed by a connecting mechanism, and the telescopic connecting assembly includes an annular expansion groove opened at the openings on both sides of the conveying single pipe, a fixed ring is fixed on one side of the annular expansion groove, and a movable ring is slidably connected to one side of the annular expansion groove, one end of the movable ring is connected to the fixed ring by a telescopic hose, and the other end of the movable ring passes through the outside of the conveying single pipe and is connected and fixed to the connecting flange, and the two connected conveying single pipes are connected and fixed by the connecting flanges at their ends.

[0007] Furthermore, the shell includes a base and a top cover, the base and the top cover are clamped and fixed, a water receiving tray is installed inside the base, a receiving space is formed between the base and the top cover, and the conveying pipeline, the gas-liquid separator and the heat exchange component are placed inside the receiving space and located on the top of the water receiving tray.

[0008] Furthermore, a plurality of magnetic adsorption arc pieces are provided on the outer surface of the movable ring close to the connecting flange, the width of the magnetic adsorption arc piece is adapted to the extension distance of the movable ring, and a magnetic adsorption block is adsorbed on the magnetic adsorption arc piece, and the two sides of the magnetic adsorption block are respectively squeezed together with the side wall of the conveying single pipe and the side wall of the connecting flange.

[0009] Furthermore, the telescopic connection assembly also includes a sealing plate adapted to the connecting flange, a sealing block adapted to the pipe diameter of the connecting flange is provided in the middle of the outer surface of the sealing plate, limiting slide grooves are provided on the inner walls on both sides of the annular expansion groove, and a limiting sliding block matching the limiting slide groove is fixed to the outer surface of the movable ring.

[0010] Furthermore, the connecting mechanism includes a connecting component and a reset component, the connecting component includes a connecting channel opened in the middle of the connecting pipe, a docking groove 2 is opened at the end of the connecting pipe and located on the outside of the connecting channel, the end of the connecting pipe is also rotatably connected to an annular sleeve, the outer surface end of the annular sleeve is opened with an annular step groove, and the inner wall of the annular sleeve is opened with an internal thread groove.

[0011] Furthermore, the connecting assembly also includes a docking groove one opened at the end of the pipe connecting seat and located on the outside of the flow hole, an external thread groove matching the annular sleeve is opened on the outside of the docking groove one, a sliding groove connected to the external thread groove is opened in the inner walls of the four sides of the pipe connecting seat respectively, a sliding plate is slidably connected inside the sliding groove, a T-shaped plate is fixed at the top center of the sliding plate, the end of the T-shaped plate passes through the outside of the pipe connecting seat, a spring is sleeved on the outer surface of the T-shaped plate and located between the inner wall of the sliding groove and the sliding plate, a trapezoidal clamping plate is fixed to the middle of the outer surface of the sliding plate away from one end of the T-shaped plate, the trapezoidal clamping plate passes through the inside of the external thread groove and abuts against the annular step groove on the outer surface of the annular sleeve.

[0012] Furthermore, the reset component includes an annular cavity opened in the inner wall of the pipe connecting seat on one side close to the conveying single pipe, and a Y-shaped groove matching the annular cavity is respectively opened in the middle of the outer surfaces of the four sides of the pipe connecting seat, and a lifting plate is rotatably connected to the middle of the inner wall at the opening of the Y-shaped groove through a rotating shaft, one end of the lifting plate is located below the T-shaped plate, and a sliding groove is opened on the outer surface of the side of the other end of the lifting plate, and a movable plate is slidably connected to the inner wall of the sliding groove, and a protrusion is fixed on the outer surface of the end of the movable plate, and a rotating ring is rotatably connected to the inside of the annular cavity, and a plurality of frame plates are evenly fixed on the circumferential outer surface of the rotating ring, and the end of the protrusion passes through the inside of the frame plate.

[0013] Furthermore, a side rod is fixed to one side of the circumferential outer surface of the rotating ring, an adjustment opening is opened on one side of the top of the annular cavity and penetrates to the outer surface of the pipe connecting seat, an arc plate is fixed to the middle part of one end of the side rod inside the adjusting opening, and a winding groove matching the arc plate is opened on the inner walls on both sides of the adjusting opening respectively, a winding roller is rotatably connected in the inner wall of the winding groove, a winding spring is provided at the rotating connection between the winding roller and the inner wall of the winding groove, a shielding cloth is wound on the winding roller, and an end of the shielding cloth penetrates into the adjusting opening and is connected and fixed to the arc plate.

[0014] Furthermore, a guide wheel matched with the shielding cloth is provided at the opening of the winding groove.

[0015] According to another aspect of the present invention, a multi-split air-conditioning system is provided. According to the above-mentioned multi-split air-conditioning switching device, it includes an outdoor unit and a plurality of indoor units with a plurality of first interfaces and a plurality of second interfaces, the outdoor unit is connected to the inlet, the first outlet is connected to the plurality of the first interfaces respectively through a plurality of first indoor unit interface pipelines, the first U-shaped tube is connected to the plurality of the first indoor unit interface pipelines respectively through a plurality of first single-way solenoid valves, the plurality of the first indoor unit interface pipelines are connected to the outdoor unit respectively through a plurality of second single-way solenoid valves, the other end of the heat exchange component is connected to the plurality of the second interfaces respectively through a plurality of second indoor unit interface pipelines, a one-way valve is arranged between the heat exchange component and the second indoor unit interface pipeline, and the second U-shaped tube is connected to the outdoor unit and the plurality of the first indoor unit interface pipelines respectively.

[0016] Beneficial effects of the present invention:

[0017] Through the design of the telescopic connection component, when a section or a section of the conveying pipeline is blocked or needs maintenance, the connection between the two connecting flanges can be released by removing the bolts on the connecting flanges of the two adjacent conveying single pipes. Subsequently, the magnetic adsorption block clamped between the connecting flange and the conveying single pipe is removed from the magnetic adsorption arc piece. Then, the connecting flange is pushed to move the movable ring to be stored in the annular expansion groove. Then, the damaged conveying single pipe can be removed, thereby achieving the connection between several conveying single pipes and rapid disassembly, thereby meeting the use and maintenance needs of the conveying pipeline.

[0018] Through the design of magnetic adsorption arc pieces and magnetic adsorption blocks, when two adjacent conveying single pipes are connected, when the end of the movable ring extends out of the conveying single pipe, a magnetic adsorption block can be placed in the gap between the connecting flange and the conveying single pipe. The magnetic adsorption block can be used to block the movable ring from retracting into the conveying single pipe, thereby improving the stability of the connection.

[0019] Through the design of the blocking plate and the blocking block, when a single delivery pipe is removed, the single delivery pipes on both sides of the single delivery pipe can be blocked, thereby preventing leakage of the single delivery pipes on both sides.

[0020] Through the design of the connecting mechanism, a connecting pipe can be added between two adjacent pipe connecting seats to perform the connecting action, and the connection and fixation of the pipe connecting seat and the connecting pipe can be achieved through the connecting assembly. At the same time, the disassembly action can be quickly achieved when disassembling the connection relationship between the pipe connecting seat and the connecting pipe.

[0021] Through the design of the connecting component, the connecting channel and the second docking groove at the end of the connecting pipe and the annular sleeve are respectively inserted into the flow hole, the docking groove and the external thread groove on the pipe connecting seat. Then, the annular sleeve is rotated so that the internal thread groove on the inner wall of the annular sleeve is threadedly engaged with the external thread groove on the pipe connecting seat, thereby forming a threaded connection. In the process of the annular sleeve being screwed into the external thread groove, the annular sleeve will squeeze and push the inclined surface of the trapezoidal clamping plate, thereby pushing the trapezoidal clamping plate to be received in the sliding groove. When the annular step groove on the annular sleeve rotates through the trapezoidal clamping plate, under the action of the spring, the sliding plate pushes the straight face end of the trapezoidal clamping plate to clamp together with the annular step groove, thereby preventing the annular sleeve from detaching from the pipe connecting seat to form a stable connection.

[0022] Through the design of the reset component, when the connecting pipe is used up and needs to be removed, the maintenance personnel puts their fingers in the adjustment opening to press the side rod, the side rod drives the rotating ring to rotate, the rotating ring drives several frame plates to rotate, the inner wall of the frame plate squeezes the protrusion to drive the moving plate to move linearly, the other end of the moving plate is slidably connected in the sliding groove on the outer surface of the jacking plate, and then can drive the jacking plate to rotate, the other end of the jacking plate will squeeze and push the end of the T-shaped plate, and then push the T-shaped plate to move, the T-shaped plate will pull the sliding plate and the trapezoidal clamping plate to move linearly, and then the trapezoidal clamping plate will move again and be stored in the sliding groove, and then release the abutment limit on the annular step groove on the annular sleeve, at this time, the annular sleeve can be rotated to release the connection relationship between the annular sleeve and the pipe connecting seat, and at this time, the connecting pipe can be detached from the pipe connecting seat.

[0023] Through the design of the sealing semicircular plate and the sealing plug, when the pipe connecting seat is not in use, under the action of the spring hinge and the negative pressure in the conveying single tube, the sealing semicircular plate will fit onto the outer surface of the flow hole to achieve sealing of the flow hole. When the pipe connecting seat is in use, when the end of the connecting pipe is inserted into the flow hole, the two sealing semicircular plates will be pushed open to achieve connection between the connecting pipe and the conveying single tube.

[0024] Through the design of the slide groove, a movable space is provided for the movable plate, so that the linear movement of the movable plate can be adapted to the rotational movement of the lifting plate without motion interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of a multi-split air conditioner switching device of the present invention;

[0027] Figure 2 It is a schematic diagram of the partial structure of the delivery pipeline of a multi-split air conditioner switching device of the present invention;

[0028] Figure 3 It is a schematic diagram of the connection structure of a single delivery pipe and a telescopic connection assembly of a multi-split air conditioner switching device of the present invention;

[0029] Figure 4 It is a schematic diagram of the connection structure of a single delivery pipe and a pipe connection seat of a multi-split air conditioner switching device of the present invention;

[0030] Figure 5 It is a partial structural schematic diagram of a telescopic connection assembly of a multi-split air conditioner switching device of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of a magnetic adsorption block of a multi-split air conditioner switching device of the present invention;

[0032] Figure 7 A schematic diagram of the telescopic connection assembly structure of a multi-split air conditioner switching device of the present invention Figure 1 ;

[0033] Figure 8 This is a schematic diagram of the connection structure of a blocking plate and a blocking block of a multi-split air conditioner switching device of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of a multi-split air conditioner switching device of the present invention;

[0035] Fig.10 A schematic diagram of the telescopic connection assembly structure of a multi-split air conditioner switching device of the present invention Figure 2 ;

[0036] Fig.11 It is a schematic diagram of the connection structure of the pipe connection seat and the connection mechanism of a multi-split air conditioner switching device of the present invention with the T-shaped plate removed;

[0037] Fig.12 A schematic diagram of the connection structure between a pipe connection seat and a protective cover plate of a multi-split air conditioner switching device of the present invention;

[0038] Fig.13 A schematic diagram of the connection structure of a connecting pipe and a connecting assembly of a multi-split air conditioner switching device of the present invention Figure 1 ;

[0039] Fig.14 A schematic diagram of the connection structure of a connecting pipe and a connecting assembly of a multi-split air conditioner switching device of the present invention Figure 2 ;

[0040] Fig.15It is a schematic diagram of the connection structure of a connecting pipe and a reset assembly of a multi-split air conditioner switching device of the present invention;

[0041] Fig.16 This is a schematic diagram of the structure of a reset component of a multi-split air conditioner switching device of the present invention;

[0042] Fig.17 The present invention is a schematic diagram of the internal structure of a pipe connection seat of a multi-split air conditioner switching device.

[0043] In the figure, 1, base; 2, water tray; 3, top cover; 4, conveying pipeline; 5, gas-liquid separator; 6, heat exchange component; 7, conveying single pipe; 8, limit slide; 9, fixed ring; 10, telescopic hose; 11, moving ring; 12, limit slide; 13, connecting flange; 14, magnetic adsorption arc piece; 15, magnetic adsorption block; 16, blocking plate; 17, blocking block; 18, pipeline connection seat; 19, flow hole; 20, blocking semicircular plate; 21, sealing plug; 22, docking groove 1; 23, external thread groove; 24, sliding groove; 25, sliding plate; 26, T-shaped plate; 27. spring; 28. trapezoidal clamping plate; 29. ​​annular cavity; 30. Y-shaped groove; 31. rotating ring; 32. frame plate; 33. movable plate; 34. bump; 35. rotating shaft; 36. lifting plate; 37. slide groove; 38. side rod; 39. arc plate; 40. adjusting opening; 41. winding groove; 42. winding roller; 43. shielding cloth; 44. guide wheel; 45. connecting pipe; 46. annular sleeve; 47. annular step groove; 48. connecting channel; 49. docking groove II; 50. internal thread groove; 51. protective cover plate; 52. annular expansion groove. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] For example, see Figure 1-Figure 17The present invention provides a technical solution for a multi-split air conditioner switching device, comprising a shell, wherein a delivery pipeline 4, a gas-liquid separator 5 and a heat exchange component 6 are arranged inside the shell, wherein the gas-liquid separator 5 is provided with an inlet, a first outlet and a second outlet, one end of the heat exchange component 6 is communicated with the second outlet, the delivery pipeline 4 comprises a first U-shaped tube and a second U-shaped tube, the first U-shaped tube and the second U-shaped tube are communicated, and the first U-shaped tube is connected to the first outlet, the shell comprises a base 1 and a top cover 3, the base 1 and the top cover 3 are clamped and fixed, a water receiving tray 2 is installed inside the base 1, and a receiving space is formed between the base 1 and the top cover 3, the delivery pipeline 4, the gas-liquid separator 5 and the heat exchange component 6 are placed inside the receiving space and located on the top of the water receiving tray 2; the above-mentioned delivery pipeline 4, the gas-liquid separator 5 and the heat exchange component 6 are all prior arts, so there is no need to elaborate on them, as shown in the switching device for a multi-split air conditioner and the multi-split air conditioner having the same disclosed in 201610709381.X.

[0046] See also Figure 2-Figure 9The delivery pipeline 4 includes a plurality of delivery single tubes 7, and two adjacent delivery single tubes 7 are connected and fixed by a telescopic connection assembly. A connecting hole is provided on the outer surface of the side of the delivery single tube 7, and a pipeline connection seat 18 adapted to the connecting hole is fixed on the delivery single tube 7. A flow hole 19 connected to the connecting hole is provided in the middle of the pipeline connection seat 18. One end of the flow hole 19 connected to the connecting hole is connected to two blocking semicircular plates 20 through a spring hinge. A sealing plug 21 matching the flow hole 19 is fixed at the end of the blocking semicircular plate 20. An end flaring groove matching the blocking semicircular plate 20 is provided at the end of the connecting hole. The outer surface of the pipeline connection seat 18 is connected to the connecting hole through a spring hinge. A protective cover plate 51 is connected, a connecting pipe 45 is connected between two adjacent pipe connection seats 18, and the connecting pipe 45 is connected and fixed to the pipe connection seat 18 through a connecting mechanism. The telescopic connection assembly includes an annular expansion groove 52 opened at the openings on both sides of the conveying single pipe 7, a fixed ring member 9 is fixed on one side of the annular expansion groove 52, and a movable ring member 11 is slidably connected to one side of the annular expansion groove 52. One end of the movable ring member 11 is connected to the fixed ring member 9 through a telescopic hose 10, and the other end of the movable ring member 11 passes through the outside of the conveying single pipe 7 and is connected and fixed to the connecting flange 13. The two connected conveying single pipes 7 are connected and fixed through the connecting flange 13 at the ends of both. The outer surface of the movable ring 11 close to the connecting flange 13 is provided with a plurality of magnetic adsorption arc pieces 14, the width of the magnetic adsorption arc piece 14 is adapted to the extension distance of the movable ring 11, and a magnetic adsorption block 15 is adsorbed on the magnetic adsorption arc piece 14, and the two sides of the magnetic adsorption block 15 are respectively squeezed together with the side wall of the conveying single pipe 7 and the side wall of the connecting flange 13, and the telescopic connection assembly also includes a sealing plate 16 adapted to the connecting flange 13, and a sealing block 17 adapted to the pipe diameter of the connecting flange 13 is arranged in the middle of the outer surface of the sealing plate 16, and limiting sliding grooves 8 are provided on the inner walls of both sides of the annular expansion groove 52, and the outer surface of the movable ring 11 is fixed with a sealing plate 16 adapted to the pipe diameter of the connecting flange 13. The limiting slider 12 cooperates with the slide groove 8; through the design of the telescopic connection component, when a section or a section in the conveying pipeline 4 is blocked or needs maintenance, at this time, the connection relationship between the two connecting flanges 13 can be released by removing the bolts on the connecting flanges 13 on the two adjacent conveying single pipes 7, and then the magnetic adsorption block 15 clamped between the connecting flange 13 and the conveying single pipe 7 is removed from the magnetic adsorption arc piece 14, and then, the connecting flange 13 is pushed to make the movable ring 11 move and be stored in the annular expansion groove 52, and then, the damaged conveying single pipe 7 can be removed, so that while realizing the connection between several conveying single pipes 7, rapid decomposition can be achieved, thereby meeting the use and maintenance requirements of the conveying pipeline 4.

[0047] See also Figure 10-Figure 14 , Fig.17 The connecting mechanism includes a connecting assembly and a reset assembly. The connecting assembly includes a connecting passage 48 opened in the middle of the connecting pipe 45. A docking groove 49 is opened at the end of the connecting pipe 45 and located on the outside of the connecting passage 48. The end of the connecting pipe 45 is also rotatably connected to an annular sleeve 46. An annular step groove 47 is opened at the outer surface end of the annular sleeve 46. An internal thread groove 50 is opened on the inner wall of the annular sleeve 46. The connecting assembly also includes a docking groove 1 opened at the end of the pipeline connecting seat 18 and located on the outside of the flow hole 19. 22, an external thread groove 23 matching with the annular sleeve 46 is provided on the outer side of the docking groove 22, a sliding groove 24 connected with the external thread groove 23 is provided in the inner walls of the four sides of the pipe connecting seat 18, a sliding plate 25 is slidably connected inside the sliding groove 24, a T-shaped plate 26 is fixed at the top center of the sliding plate 25, the end of the T-shaped plate 26 penetrates to the outer side of the pipe connecting seat 18, a spring 27 is sleeved on the outer surface of the T-shaped plate 26 and located between the inner wall of the sliding groove 24 and the sliding plate 25, the sliding plate A trapezoidal clamping plate 28 is fixed to the middle of the outer surface of one end of the T-shaped plate 25 away from the T-shaped plate 26, and the trapezoidal clamping plate 28 penetrates into the inner part of the external thread groove 23 and abuts against the annular stepped groove 47 on the outer surface of the annular sleeve 46; through the design of the connecting component, the connecting channel 48 and the docking groove 29 at the end of the connecting pipe 45 and the annular sleeve 46 are respectively inserted into the flow hole 19, the docking groove 1 22 and the external thread groove 23 on the pipeline connecting seat 18, and then the annular sleeve 46 is rotated so that the internal thread groove 50 on the inner wall of the annular sleeve 46 is connected to the pipeline. The external thread groove 23 on the seat 18 is threadedly engaged together to form a threaded connection. When the annular sleeve 46 is screwed into the external thread groove 23, the annular sleeve 46 will squeeze and push the inclined surface of the trapezoidal clamping plate 28, thereby pushing the trapezoidal clamping plate 28 to be stored in the sliding groove 24. When the annular step groove 47 on the annular sleeve 46 rotates through the trapezoidal clamping plate 28, under the action of the spring 27, the sliding plate 25 pushes the straight end of the trapezoidal clamping plate 28 to clamp together with the annular step groove 47, thereby preventing the annular sleeve 46 from detaching from the pipe connecting seat 18 to form a stable connection.

[0048] See also Figure 10-11 and Figure 15-16The reset assembly includes an annular cavity 29 opened in the inner wall of the pipeline connection seat 18 on one side close to the delivery single pipe 7, and a Y-shaped groove 30 matching the annular cavity 29 is respectively opened in the middle of the outer surface of the four sides of the pipeline connection seat 18, and a lifting plate 36 is rotatably connected to the middle of the inner wall at the opening of the Y-shaped groove 30 through a rotating shaft 35. One end of the lifting plate 36 is located below the T-shaped plate 26, and a sliding groove 37 is opened on the outer surface of the side of the other end of the lifting plate 36. The inner wall of the sliding groove 37 is slidably connected to a moving plate 33, and a protrusion 34 is fixed on the outer surface of the end of the moving plate 33. The inner wall of the annular cavity 29 is rotatably connected to the inner wall of the annular cavity 29. A rotating ring 31 is connected, and a plurality of frame plates 32 are evenly fixed on the circumferential outer surface of the rotating ring 31. The end of the protrusion 34 penetrates into the interior of the frame plate 32. A side rod 38 is fixed to one side of the circumferential outer surface of the rotating ring 31. An adjustment opening 40 is opened on one side of the top of the annular cavity 29 and penetrates to the outer surface of the pipe connecting seat 18. An arc plate 39 is fixed to the side rod 38 in the middle of one end of the adjusting opening 40. A winding groove 41 matching with the arc plate 39 is respectively opened on the inner walls of both sides of the adjusting opening 40. A winding roller 42 is rotatably connected to the inner wall of the winding groove 41. The winding roller 42 is connected to the A winding spring is provided at the rotating connection of the inner wall of the winding groove 41, a shielding cloth 43 is wound on the winding roller 42, the end of the shielding cloth 43 passes through the adjusting opening 40 and is connected and fixed to the arc plate 39, and a guide wheel 44 adapted to the shielding cloth 43 is provided at the opening of the winding groove 41; through the design of the reset component, when the connecting pipe 45 is used and needs to be removed, the maintenance personnel puts their fingers in the adjusting opening 40 to press the side rod 38, the side rod 38 drives the rotating ring 31 to rotate, the rotating ring 31 drives several frame plates 32 to rotate, the inner wall of the frame plate 32 squeezes the protrusion 34 to drive the moving plate 33 to move in a straight line The other end of the movable plate 33 is slidably connected in the slide groove 37 on the outer surface of the lifting plate 36, thereby driving the lifting plate 36 to rotate. The other end of the lifting plate 36 will squeeze and push the end of the T-shaped plate 26, thereby pushing the T-shaped plate 26 to move. The T-shaped plate 26 will pull the sliding plate 25 and the trapezoidal clamping plate 28 to move in a straight line, thereby making the trapezoidal clamping plate 28 move again and be accommodated in the sliding groove 24, thereby releasing the abutment limit on the annular step groove 47 on the annular sleeve 46. At this time, the annular sleeve 46 can be rotated to release the connection between the annular sleeve 46 and the pipe connecting seat 18. At this time, the connecting pipe 45 can be detached from the pipe connecting seat 18.

[0049] Embodiment 2, according to an embodiment of the present invention, a multi-split air-conditioning system is further provided. According to the above-mentioned multi-split air-conditioning switching device, it includes an outdoor unit and a plurality of indoor units having a plurality of first interfaces and a plurality of second interfaces. The outdoor unit is connected to the inlet, and the first outlet is respectively connected to the plurality of first interfaces through a plurality of first indoor unit interface pipelines, the first U-shaped tube is respectively connected to the plurality of first indoor unit interface pipelines through a plurality of first single-way solenoid valves, and the plurality of first indoor unit interface pipelines are respectively connected to the outdoor unit through a plurality of second single-way solenoid valves. The other end of the heat exchange component 6 is respectively connected to the plurality of second interfaces through a plurality of second indoor unit interface pipelines, a one-way valve is arranged between the heat exchange component 6 and the second indoor unit interface pipeline, and the second U-shaped tube is respectively connected to the outdoor unit and the plurality of first indoor unit interface pipelines. The components and the connection relationship of the components in the above-mentioned multi-split air-conditioning system are all prior art, so there is no need to elaborate on them, as shown in the switching device for a multi-split air-conditioner and a multi-split air-conditioner having the same disclosed in 201610709381.X.

[0050] When in use, the switching process of the multi-split air conditioner switching device is the prior art, such as 201610709381.The switching device for a multi-split air conditioner disclosed by X and the multi-split air conditioner having the same are shown in the figure, therefore, the present invention is not described in detail. The present invention is a technical improvement based on the prior art; the technical solution part of the present invention is specifically explained below, that is, when a section or a section in the delivery pipeline 4 is blocked or needs maintenance, at this time, the bolts on the connecting flanges 13 on the two adjacent delivery single pipes 7 can be removed to release the connection relationship between the two connecting flanges 13, and then the magnetic adsorption block 15 clamped between the connecting flange 13 and the delivery single pipe 7 is removed from the magnetic adsorption arc piece 14, and then the connecting flange 13 is pushed so that the movable ring 11 is moved and stored in the annular expansion groove 52, and then the damaged The delivery single pipe 7 is removed, and the ends of the connecting flanges 13 on the delivery single pipes 7 on both sides are connected with sealing plates 16 by bolts. The sealing blocks 17 on the sealing plates 16 are clamped in the holes in the middle of the connecting flanges 13 to achieve the sealing of the delivery single pipes 7 on both sides, and the connecting pipes 45 are connected to the pipe connecting seats 18 on both sides of the delivery single pipes 7 to achieve the communication between the pipe connecting seats 18 on both sides. Specifically, the connecting channel 48 and the docking groove 2 49 at the ends of the connecting pipe 45 and the annular sleeve 46 are respectively inserted into the flow hole 19, the docking groove 1 22 and the external thread groove 23 on the pipe connecting seat 18. Then, the annular sleeve 46 is rotated so that the internal thread groove 50 on the inner wall of the annular sleeve 46 is threadedly engaged with the external thread groove 23 on the pipe connecting seat 18. Together, a threaded connection is formed. When the annular sleeve 46 is screwed into the external thread groove 23, the annular sleeve 46 will squeeze and push the inclined surface of the trapezoidal clamping plate 28, thereby pushing the trapezoidal clamping plate 28 to be stored in the sliding groove 24. When the annular step groove 47 on the annular sleeve 46 rotates through the trapezoidal clamping plate 28, under the action of the spring 27, the sliding plate 25 pushes the straight end of the trapezoidal clamping plate 28 to clamp together with the annular step groove 47, so that the annular sleeve 46 will not separate from the pipe connecting seat 18 to form a stable connection; when the connecting pipe 45 is used, it needs to be removed. The maintenance personnel puts their fingers in the adjusting opening 40 to press the side rod 38, and the side rod 38 drives the rotating ring 31 to rotate, and the rotating ring 31 drives several The frame plate 32 rotates, and the inner wall of the frame plate 32 squeezes the protrusion 34 to drive the moving plate 33 to move linearly. The other end of the moving plate 33 is slidably connected to the slide groove 37 on the outer surface of the lifting plate 36, thereby driving the lifting plate 36 to rotate. The other end of the lifting plate 36 squeezes and pushes the end of the T-shaped plate 26, thereby pushing the T-shaped plate 26 to move. The T-shaped plate 26 pulls the sliding plate 25 and the trapezoidal clamping plate 28 to move linearly, thereby causing the trapezoidal clamping plate 28 to move again and be stored in the sliding groove 24, thereby releasing the abutment limit of the annular stepped groove 47 on the annular sleeve 46. At this time, the annular sleeve 46 can be rotated to release the connection between the annular sleeve 46 and the pipe connecting seat 18. At this time, the connecting pipe 45 can be separated from the pipe connecting seat 18.

[0051] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-split air conditioner switching device, characterized in that: The invention comprises a shell, wherein a delivery pipeline (4), a gas-liquid separator (5) and a heat exchange component (6) are arranged inside the shell, wherein the gas-liquid separator (5) is provided with an inlet, a first outlet and a second outlet, wherein one end of the heat exchange component (6) is connected to the second outlet, wherein the delivery pipeline (4) comprises a first U-shaped tube and a second U-shaped tube, wherein the first U-shaped tube is connected to the second U-shaped tube, wherein the first U-shaped tube is connected to the first outlet, wherein the delivery pipeline (4) comprises a plurality of delivery single tubes (7), wherein two adjacent delivery single tubes (7) are connected and fixed by a telescopic connection assembly, wherein a communication hole is provided on the outer surface of the side of the delivery single tube (7), and a pipeline connection seat (11) adapted to the communication hole is fixed to the delivery single tube (7). 8), a flow hole (19) connected to the connecting hole is provided in the middle of the pipe connection seat (18), one end of the flow hole (19) connected to the connecting hole is connected to two blocking semicircular plates (20) via a spring hinge, a sealing plug (21) matching the flow hole (19) is fixed to the end of the blocking semicircular plate (20), an end expansion groove matching the blocking semicircular plate (20) is provided at the end of the connecting hole, a protective cover plate (51) is connected to the outer surface of the pipe connection seat (18) via a spring hinge, a connecting pipe (45) is connected between two adjacent pipe connection seats (18), the connecting pipe (45) is connected and fixed to the pipe connection seat (18) via a connecting mechanism, and the extension The telescopic connection assembly comprises an annular expansion groove (52) provided at the openings on both sides of the conveying single tube (7), a fixed ring member (9) being fixed inside one side of the annular expansion groove (52), a movable ring member (11) being slidably connected inside one side of the annular expansion groove (52), one end of the movable ring member (11) being connected to the fixed ring member (9) via a telescopic hose (10), the other end of the movable ring member (11) passing through the outside of the conveying single tube (7) and being connected and fixed to a connecting flange (13), the two connected conveying single tubes (7) being connected and fixed via the connecting flange (13) at the ends of both, the telescopic connection assembly further comprises a sealing plate (16) adapted to the connecting flange (13), the sealing plate (16) ) is provided with a blocking block (17) matched with the pipe diameter of the connecting flange (13) in the middle of the outer surface, limiting sliding grooves (8) are provided on the inner walls on both sides of the annular expansion groove (52), and a limiting sliding block (12) matching with the limiting sliding grooves (8) is fixed on the outer surface of the movable ring (11), and the connecting mechanism includes a connecting component and a reset component, and the connecting component includes a connecting channel (48) provided in the middle of the connecting pipe (45), and a second docking groove (49) is provided at the end of the connecting pipe (45) and located on the outside of the connecting channel (48), and the end of the connecting pipe (45) is also rotatably connected to an annular sleeve (46), and the outer surface end of the annular sleeve (46) is provided with an annular stepped groove (47),An internal thread groove (50) is formed on the inner wall of the annular sleeve (46).

2. A multi-split air conditioner switching device according to claim 1, characterized in that: The shell comprises a base (1) and a top cover (3); the base (1) and the top cover (3) are fixedly connected by clamping; a water receiving tray (2) is installed inside the base (1); a receiving space is formed between the base (1) and the top cover (3); the delivery pipeline (4), the gas-liquid separator (5) and the heat exchange component (6) are placed inside the receiving space and located on the top of the water receiving tray (2).

3. A multi-split air conditioner switching device according to claim 2, characterized in that: A plurality of magnetic adsorption arc sheets (14) are provided on the outer surface of one side of the movable ring (11) close to the connecting flange (13), the width of the magnetic adsorption arc sheets (14) being adapted to the extension distance of the movable ring (11), and a magnetic adsorption block (15) being adsorbed on the magnetic adsorption arc sheets (14), and the two sides of the magnetic adsorption block (15) being respectively pressed together with the side wall of the conveying single tube (7) and the side wall of the connecting flange (13).

4. A multi-split air conditioner switching device according to claim 3, characterized in that: The connection assembly further comprises a docking groove (22) formed at the end of the pipe connection seat (18) and located outside the flow hole (19); an external thread groove (23) cooperating with the annular sleeve (46) is formed on the outside of the docking groove (22); a sliding groove (24) communicating with the external thread groove (23) is formed in the inner walls of the four sides of the pipe connection seat (18); a sliding plate (25) is slidably connected inside the sliding groove (24); a T-shaped plate (25) is fixed at the top center of the sliding plate (25). 6), the end of the T-shaped plate (26) penetrates to the outside of the pipe connecting seat (18), a spring (27) is sleeved on the outer surface of the T-shaped plate (26) and is located between the inner wall of the sliding groove (24) and the sliding plate (25), and a trapezoidal clamping plate (28) is fixed to the middle of the outer surface of the sliding plate (25) away from one end of the T-shaped plate (26), and the trapezoidal clamping plate (28) penetrates to the inside of the external thread groove (23) and abuts against the annular stepped groove (47) on the outer surface of the annular sleeve (46).

5. A multi-split air conditioner switching device according to claim 4, characterized in that: The reset assembly comprises an annular cavity (29) formed in the inner wall of the pipe connection seat (18) on one side close to the single delivery pipe (7); a Y-shaped groove (30) matching the annular cavity (29) is formed in the middle of the outer surfaces of the four sides of the pipe connection seat (18); a lifting plate (36) is rotatably connected to the middle of the inner wall at the opening of the Y-shaped groove (30) via a rotating shaft (35); one end of the lifting plate (36) is located below the T-shaped plate (26); a sliding groove (37) is formed on the outer surface of the side edge of the other end of the lifting plate (36); a moving plate (33) is slidably connected to the inner wall of the sliding groove (37); a protrusion (34) is fixed to the outer surface of the end of the moving plate (33); a rotating ring (31) is rotatably connected to the inside of the annular cavity (29); a plurality of frame plates (32) are evenly fixed to the circumferential outer surface of the rotating ring (31); and the end of the protrusion (34) penetrates into the inside of the frame plate (32).

6. A multi-split air conditioner switching device according to claim 5, characterized in that: A side rod (38) is fixed to one side of the circumferential outer surface of the rotating ring (31); an adjustment opening (40) is provided on one side of the top of the annular cavity (29) and extends through the outer surface of the pipe connecting seat (18); an arc plate (39) is fixed to the middle of one end of the side rod (38) inside the adjustment opening (40); a winding groove (41) matching with the arc plate (39) is provided on the inner walls of both sides of the adjustment opening (40); a winding roller (42) is rotatably connected to the inner wall of the winding groove (41); a winding spring is provided at the rotatable connection between the winding roller (42) and the inner wall of the winding groove (41); a shielding cloth (43) is wound on the winding roller (42); an end of the shielding cloth (43) extends through the adjustment opening (40) and is connected and fixed to the arc plate (39).

7. A multi-split air conditioner switching device according to claim 6, characterized in that: A guide wheel (44) adapted to the shielding cloth (43) is provided at the opening of the winding groove (41).

8. A multi-split air conditioning system, characterized in that: The multi-split air conditioner switching device according to any one of claims 1 to 7, comprising an outdoor unit and a plurality of indoor units having a plurality of first interfaces and a plurality of second interfaces, the outdoor unit being connected to the inlet, the first outlet being connected to the plurality of first interfaces respectively through a plurality of first indoor unit interface pipelines, the first U-shaped tube being connected to the plurality of first indoor unit interface pipelines respectively through a plurality of first single-way solenoid valves, the plurality of first indoor unit interface pipelines being connected to the outdoor unit respectively through a plurality of second single-way solenoid valves, the other end of the heat exchange component (6) being connected to the plurality of second interfaces respectively through a plurality of second indoor unit interface pipelines, a one-way valve being provided between the heat exchange component (6) and the second indoor unit interface pipeline, and the second U-shaped tube being connected to the outdoor unit and the plurality of first indoor unit interface pipelines respectively.

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