Branching box and multi-connected air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses a branch box and a multi-connected air conditioner, the branch box comprises a shell, a pipeline assembly, a sensor, an air guide cover and a sealing box, the shell is provided with a containing cavity, and the shell comprises a first side plate and a second side plate; the pipeline assembly is arranged in the containing cavity and comprises a plurality of manifolds and a plurality of main pipes, the manifolds are arranged in the first through holes of the first side plate in a penetrating mode, first pipe joints are arranged at the ends of the manifolds, the main pipes are arranged in the second through holes of the second side plate in a penetrating mode, and second pipe joints are arranged at the ends of the main pipes; the sensor is arranged in the accommodating cavity; the air guide cover is provided with an air guide cavity, the first pipe joints are located in the air guide cavity, and the air guide cavity communicates with the containing cavity; the sealing box is provided with a sealing cavity, and the second pipe joint is located in the sealing cavity which communicates with the containing cavity. A plurality of possible leakage points in the branch box can be detected through one sensor, the number of the sensors is reduced, the production cost is reduced, and the use safety of the air conditioner is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a branch box and a multi-connected air conditioner. Background Art

[0002] In the related art, the branch box used in the multi-split air conditioner has a pipe assembly, which generally includes an input pipe group and an output pipe assembly, and the input pipe assembly and the output pipe assembly each include a plurality of branch pipes. Since some refrigerants are flammable, there are many possible leakage points in the branch box, but there is a lack of measures to detect refrigerant leakage, which needs to be improved. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a branch box that can detect multiple possible leakage points through one sensor, reduce costs, and improve the safety of the air conditioner.

[0004] The utility model also provides a multi-connected air conditioner with the branch box.

[0005] According to the embodiment of the first aspect of the utility model, the branch box includes a shell, a pipeline assembly, a sensor, an air guide hood and a sealing box, the shell has a accommodating chamber, and the shell includes a first side plate and a second side plate; the pipeline assembly is arranged in the accommodating chamber, the pipeline assembly includes a plurality of manifolds and a main pipe, the manifold is passed through the first through hole of the first side plate, and the end of the manifold is provided with a first pipe joint, the main pipe is passed through the second through hole of the second side plate, and the end of the main pipe is provided with a second pipe joint; the sensor is arranged in the accommodating chamber; the air guide hood is connected to the first side plate, the air guide hood has an air guide chamber, a plurality of the first pipe joints are located in the air guide chamber, and the air guide chamber is connected to the accommodating chamber; the sealing box is connected to the second side plate, the sealing box has a sealed chamber, the second pipe joint is located in the sealed chamber, and the sealed chamber is connected to the accommodating chamber.

[0006] The heat exchanger according to the first embodiment of the utility model has at least the following beneficial effects:

[0007] The shell is provided with a first side plate and a second side plate, the first side plate is provided with a second through hole, the second side plate is provided with a second through hole, a plurality of manifolds and a plurality of main pipes are arranged in the accommodating cavity, the manifold is penetrated in the first through hole, the main pipe is penetrated in the second through hole, and the end of the manifold is connected with a first pipe joint, the end of the main pipe is connected with a second pipe joint, the first pipe joint is arranged in the inner cavity of the air guide hood, the second pipe joint is arranged in the sealed cavity of the sealing box, the sensor is arranged in the accommodating cavity, the air guide cavity of the air guide hood is connected with the accommodating cavity, the sealed cavity of the sealing box is connected with the accommodating cavity, so that the refrigerant leaked from the first pipe joint can be conducted to the accommodating cavity through the air guide cavity, and the refrigerant leaked from the second pipe joint can be conducted to the accommodating cavity through the sealed cavity, so that the sensor can detect the refrigerant in the accommodating cavity, the air guide cavity and the sealed cavity, so that one sensor can detect multiple possible leakage points in the branch box, thereby reducing the number of sensors, reducing production costs, and improving the safety of the air conditioner.

[0008] According to some embodiments of the utility model, an opening is provided on one side of the air guide cover connected to the first side plate, and the first side plate is provided with a plurality of first ventilation holes connected to the opening, and a plurality of first ventilation holes are distributed around the periphery of each first through hole.

[0009] According to some embodiments of the utility model, a soft rubber plate is provided on the side of the air guide cover facing away from the first side plate, and the soft rubber plate is provided with a pipe sleeve, and the pipe sleeve is used to seal the pipe connected to the first pipe joint.

[0010] According to some embodiments of the present invention, the pipe sleeve is connected to a clamp, the pipe sleeve is sleeved on the outer wall of the pipe, and the clamp wraps the pipe sleeve to lock it.

[0011] According to some embodiments of the utility model, the sealing box is provided with an insert tube, the second side plate is provided with an insert hole, and the insert tube is passed through the insert hole to connect the sealing cavity and the accommodating cavity.

[0012] According to some embodiments of the utility model, a plurality of buckles are provided on the end surface of the sealing box facing the second side plate, the plurality of buckles are distributed at intervals along the circumference of the sealing box, and the second side plate is provided with buckle holes matching the buckles.

[0013] According to some embodiments of the utility model, the sealed box includes a first box body and a second box body, one side of the first box body and the second box body is hinged, and the other side is fixed by a snap, the first box body is provided with a connecting column, and the second box body is provided with a connecting seat, and the connecting column and the connecting seat are fixedly connected by fasteners.

[0014] According to some embodiments of the utility model, the branch box includes an inner shell arranged in a accommodating cavity, the inner shell is provided with an installation cavity, at least part of the pipeline assembly is installed in the installation cavity, the sensor is connected to the outer wall of the inner shell, the inner shell is connected to an air duct, one end of the air duct is located in the installation cavity, and the other end of the air duct is located in the accommodating cavity and adjacent to the sensor.

[0015] According to some embodiments of the present invention, the sensor is located at the connection between the first side plate and the second side plate.

[0016] The multi-split air conditioner according to the second embodiment of the utility model includes the branch box according to the first embodiment of the utility model.

[0017] The multi-split air conditioner according to the embodiment of the second aspect of the utility model has at least the following beneficial effects: by setting the branch box of the embodiment of the first aspect of the utility model, it is possible to conveniently detect the leakage of the refrigerant, improve the safety of the use of the multi-split air conditioner, and reduce the production cost, thereby improving the production efficiency of the multi-split air conditioner.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 A schematic diagram of a branch box according to an embodiment of the first aspect of the utility model;

[0021] Figure 2 A schematic diagram of an inner liner of a branch box according to an embodiment of the first aspect of the utility model;

[0022] Figure 3 A cross-sectional view of a branch box according to an embodiment of the first aspect of the utility model;

[0023] Figure 4 for Figure 3 A local enlarged view of point A;

[0024] Figure 5 for Figure 3 A partial enlarged view of point B;

[0025] Figure 6 A schematic diagram of a first side panel of a branch box according to an embodiment of the first aspect of the utility model;

[0026] Figure 7 It is a schematic diagram of the installation of the sealing box of the branch box of the first embodiment of the utility model;

[0027] Figure 8 A schematic diagram of a sealing box of a branch box according to an embodiment of the first aspect of the utility model;

[0028] Fig. 9 It is a schematic diagram of the expansion of the sealing box of the branch box of the first embodiment of the utility model.

[0029] The figures are as follows:

[0030] The housing 100, the accommodating cavity 110, the first side plate 120, the first through hole 121, the first vent hole 122, the second side plate 130, the second through hole 131, the plug hole 132, the clamp hole 133, the liner 140, the installation cavity 141, and the air guide pipe 150;

[0031] Pipeline assembly 200, manifold 210, first pipe joint 211, main pipe 220, second pipe joint 221;

[0032] Sensor 300;

[0033] Air guide cover 400, air guide cavity 410, opening 411, soft rubber plate 420, pipe sleeve 421;

[0034] Sealing box 500, sealing cavity 510, inserting tube 520, second vent hole 521, buckle 530, connecting portion 531, first box body 541, second box body 542, connecting column 543, connecting seat 544, dovetail portion 550;

[0035] Insulation pipe 600 and clamp 610 . DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] The branch box is an important component of a multi-split air conditioner, and is mainly used to distribute the refrigerant to each indoor unit so that each indoor unit can operate effectively and meet the temperature control requirements of different indoor areas. In the related art, the branch box is usually connected to an input main pipe and an output main pipe, as well as multiple input manifolds and multiple output manifolds. The refrigerant is transported to the branch box through the input main pipe, and then transported to multiple indoor units from multiple output manifolds. The refrigerant is then transported to the branch box through the input manifold, and finally output from the output main pipe. Since the input main pipe, the output main pipe, the multiple input manifolds and the multiple output manifolds are connected by pipes, and the pipes are mainly connected together by welding and other methods, there may be leakage points at the connection of the pipes, which makes it easy for the refrigerant to leak from the branch box. Since some refrigerants are flammable, but the existing branch box lacks measures to detect refrigerant leakage, the safety of the air conditioner is reduced, affecting the reliability of the air conditioner.

[0041] The junction box is connected to a manifold and a main pipe. The manifold, the main pipe and the connection between the manifold and the main pipe are all possible leakage points of the refrigerant. In order to detect the leakage of the refrigerant in time, it is necessary to arrange sensors at multiple possible leakage points to detect the refrigerant. However, this method requires the use of multiple sensors, which increases the production cost of the junction box and reduces the production efficiency of the air conditioner.

[0042] To this end, an embodiment of the first aspect of the utility model proposes a branch box, in which the first pipe joint is connected to the first through hole through an air guide hood, and the second pipe joint is connected to the second through hole through a sealing box, so that possible leakage points of the manifold and the main pipe can be conducted to the accommodating cavity, and a sensor is arranged in the accommodating cavity so that one sensor can detect multiple possible leakage points of the branch box, thereby facilitating the detection of refrigerant, reducing production costs, and improving the safety of the air conditioner.

[0043] like Figures 1 to 5As shown, the branch box proposed in the embodiment of the first aspect of the utility model includes a shell 100, a pipeline assembly 200, a sensor 300, an air guide cover 400 and a sealing box 500, the shell 100 has a accommodating chamber 110, and the shell 100 includes a first side plate 120 and a second side plate 130; the pipeline assembly 200 is arranged in the accommodating chamber 110, and the pipeline assembly 200 includes a plurality of manifolds 210 and a main pipe 220, the manifold 210 is penetrated through the first through hole 121 of the first side plate 120, and the end of the manifold 210 is provided with a first pipe joint 211, and the main pipe 220 0 is passed through the second through hole 131 of the second side plate 130, and the end of the main pipe 220 is provided with a second pipe joint 221; the sensor 300 is arranged in the accommodating cavity 110; the air guide cover 400 is connected to the first side plate 120, the air guide cover 400 has an air guide cavity 410, a plurality of first pipe joints 211 are located in the air guide cavity 410, and the air guide cavity 410 is connected to the accommodating cavity 110; the sealing box 500 is connected to the second side plate 130, the sealing box 500 has a sealing cavity 510, the second pipe joint 221 is located in the sealing cavity 510, and the sealing cavity 510 is connected to the accommodating cavity 110.

[0044] The housing 100 is provided with a first side plate 120 and a second side plate 130, the first side plate 120 is provided with a first through hole 121, the second side plate 130 is provided with a second through hole 131, a plurality of manifolds 210 and a plurality of main pipes 220 are arranged in the accommodating chamber 110, the manifold 210 is penetrated in the first through hole 121, the main pipe 220 is penetrated in the second through hole 131, and the end of the manifold 210 is connected with a first pipe joint 211, the end of the main pipe 220 is connected with a second pipe joint 221, the first pipe joint 211 is arranged in the air guide chamber 410 of the air guide cover 400, the second pipe joint 221 is arranged in the sealing chamber 510 of the sealing box 500, and the sensor 300 is arranged in the accommodating chamber 110 By setting the air guide cavity 410 of the air guide hood 400 to be connected with the accommodating cavity 110, and the sealing cavity 510 of the sealing box 500 to be connected with the accommodating cavity 110, the refrigerant leaking from the first pipe joint 211 can be conducted to the accommodating cavity 110 through the air guide cavity 410, and the refrigerant leaking from the second pipe joint 221 can be conducted to the accommodating cavity 110 through the sealing cavity 510, so that the sensor 300 can detect the refrigerant in the accommodating cavity 110, the air guide cavity 410 and the sealing cavity 510, so that one sensor 300 can detect multiple possible leakage points of the branch box, which is convenient for the detection of refrigerant, can reduce the number of sensors 300, reduce production costs, and improve the safety of the air conditioner.

[0045] It should be noted that the plurality of manifolds 210 can be configured as input manifolds and output manifolds, and the plurality of main pipes 220 can be configured as input main pipes and output main pipes. The refrigerant is input into the branch box through the input main pipe, and then distributed to the plurality of output manifolds, so that the refrigerant can be distributed to the plurality of indoor units. The refrigerant then flows back through the input manifold and is output from the branch box from the output main pipe. The input main pipe and the output manifold, as well as the input manifold and the output main pipe are connected through pipes, and the pipes can be arranged in the accommodating chamber 110. However, the strength of the connection of the pipes is relatively weak, which makes the refrigerant easy to leak. By arranging the sensor 300 in the accommodating chamber 110, it is possible to detect whether there is refrigerant in the accommodating chamber 110, so that the refrigerant leakage in the accommodating chamber 110 can be easily detected.

[0046] In addition, the first pipe joint 211 and the second pipe joint 221 are both connected to the insulation pipe 600, and the refrigerant can be transported in the insulation pipe 600, but the pressure of the refrigerant is usually relatively large, which makes it easy for the refrigerant to leak from the first pipe joint 211 and the second pipe joint 221. By arranging the first pipe joint 211 to be located in the air guide cavity 410 of the air guide hood 400 and the second pipe joint 221 to be located in the sealing cavity 510 of the sealing box 500, when the refrigerant leaks, it can be conducted to the accommodating cavity 110 through the air guide cavity 410 or the sealing cavity 510, and thus be detected by the sensor 300, so that one sensor 300 can detect multiple possible leakage points of the branch box, thereby reducing the number of sensors 300 and reducing production costs.

[0047] It is understandable that, referring to Figure 3 , Figure 4 and Figure 6 The air guide cover 400 is provided with an opening 411 on one side connected to the first side plate 120, and the first side plate 120 is provided with a plurality of first vents 122 communicating with the opening 411, and a plurality of first vents 122 are distributed around the periphery of each first through hole 121. The air guide cover 400 is provided with an opening 411 on one side connected to the first side plate 120, and a plurality of first vents 122 are arranged around the first through hole 121. The opening 411 is provided to communicate with the first vents 122, so that the refrigerant at the first pipe joint 211 can be conducted into the accommodating chamber 110, so that the refrigerant in the air guide chamber 410 can flow through the opening 411, the first vents 122 and the accommodating chamber 110 in sequence, so that the sensor 300 can detect the refrigerant leakage at the first pipe joint 211.

[0048] It should be noted that the number of the first through holes 121 can be set to one or more, so that the refrigerant in the air guide cavity 410 can be guided into the accommodating cavity 110 through the first through holes 121, which facilitates the detection of refrigerant leakage.

[0049] Reference Figure 3 and Figure 4When the number of the first through hole 121 is set to one, the plurality of manifolds 210 are all disposed in the first through hole 121, and the refrigerant at the first pipe joint 211 can pass through the gap between two adjacent manifolds 210 and enter the accommodating chamber 110 through the first through hole 121, so that the sensor 300 can detect the refrigerant. By setting the number of the first through hole 121 to one, the area of ​​the first through hole 121 can be increased, so that the refrigerant can flow into the accommodating chamber 110 more smoothly, which is convenient for the sensor 300 to detect the leakage of the refrigerant in time and improve the sensitivity of the detection.

[0050] Reference Figure 3 and Figure 6 When the number of the first through holes 121 is set to be multiple, the manifold 210 corresponds to the first through holes 121 one by one, and the refrigerant at the first pipe joint 211 can pass through the gap between the manifold 210 and the side wall of the first through hole 121, and can also pass through the first vent hole 122, so that the refrigerant can enter the accommodating chamber 110, which is convenient for the sensor 300 to detect the leakage of the refrigerant. By setting the number of the first through holes 121 to be multiple, the weakening of the structural strength of the first side plate 120 by the first through holes 121 can be reduced, so that the first side plate 120 can maintain sufficient rigidity, reduce deformation, and reduce the possibility of loosening at the first pipe joint 211, thereby reducing the possibility of refrigerant leakage and improving the reliability of the branch box.

[0051] It is understandable that, referring to Figure 1 and Figure 3 A soft rubber sheet 420 is provided on the side of the air guide cover 400 away from the first side plate 120, and a pipe sleeve 421 is provided on the soft rubber sheet 420. The pipe sleeve 421 is used to seal the pipe connected to the first pipe joint 211. The soft rubber sheet 420 is provided on the side of the air guide cover 400 away from the first side plate 120, and a pipe sleeve 421 is provided on the soft rubber sheet 420, so that the pipe connected to the first pipe joint 211 can be inserted into the pipe sleeve 421, and the pipe sleeve 421 can fit the outer wall of the pipe, so that the pipe can be sealed, and the refrigerant can be prevented from leaking from the gap between the pipe sleeve 421 and the pipe, thereby improving the sealing performance of the air guide cover 400, preventing the sensor 300 from failing to detect the leakage of the refrigerant, and improving the reliability of the branch box.

[0052] The pipe connected to the first pipe joint 211 can be configured as an insulation pipe 600, and the pipe sleeve 421 is wrapped around the outer wall of the insulation pipe 600 to reduce the possibility of refrigerant leakage. In addition, the soft rubber plate 420 can be a rubber part or a silicone part, which will not be described in detail here.

[0053] It is understandable that, referring to Figure 1 and Figure 3The pipe sleeve 421 is connected with a clamp 610, and the pipe sleeve 421 is sleeved on the outer wall of the pipe, and the clamp 610 wraps the pipe sleeve 421 to lock it. The pipe sleeve 421 is connected with a clamp 610, and the pipe is passed through the pipe sleeve 421, and the clamp 610 is located on the outer wall of the pipe sleeve 421, and then the clamp 610 is tightened so that the clamp 610 can be pressed on the pipe sleeve 421, so that the pipe sleeve 421 can wrap the outer wall of the pipe, and the pipe sleeve 421 and the pipe fit tightly, so that the gap between the pipe sleeve 421 and the pipe can be reduced to avoid leakage of refrigerant, and the connection between the pipe and the pipe sleeve 421 can be stable, and the loosening of the pipe can be avoided, thereby reducing the possibility of refrigerant leakage and improving the reliability of the branch box.

[0054] It should be noted that the pipe sleeve 421 can be divided into two symmetrical parts along the axial direction, so that when the pipeline is arranged in the pipe sleeve 421, the two parts of the pipe sleeve 421 can be broken apart to facilitate the pipeline to be inserted into the pipe sleeve 421 and reduce the installation resistance of the pipeline. Then, the pipe sleeve 421 can be pressed into the pipeline through the clamp 610 to facilitate the installation of the pipeline and improve the connection convenience of the pipeline.

[0055] It is understandable that, referring to Figure 3 , Figure 5 , Figure 7 and Figure 8 The sealing box 500 is provided with an insert 520, the second side plate 130 is provided with a plug hole 132, the insert 520 is inserted into the plug hole 132, and the end of the insert 520 is the second vent 521. The insert 520 is provided in the sealing box 500, and the second side plate 130 is provided with a plug hole 132. By setting the insert 520 to be inserted into the plug hole 132, the sealing cavity 510 can be connected to the accommodating cavity 110 through the insert 520, so that the sensor 300 can detect the refrigerant leakage at the second pipe joint 221, so that the refrigerant leaking from the second pipe joint 221 can flow through the second vent 521, the plug hole 132 and the accommodating cavity 110 in sequence, and more possible leakage points of the branch box can be detected by one sensor 300, thereby reducing the production cost of the branch box.

[0056] In addition, by arranging the insertion tube 520 to pass through the insertion hole 132 , the sealing box 500 can be easily positioned on the second side plate 130 , which facilitates the installation and positioning of the sealing box 500 and improves the installation convenience of the sealing box 500 .

[0057] It should be noted that in order to improve the sealing between the sealing box 500 and the second side plate 130, sealant can be filled between the insert tube 520 and the side wall of the insertion hole 132, or a sealing gasket can be arranged to make the insert tube 520 tightly connected to the side wall of the insertion hole 132 to prevent the refrigerant from leaking from the gap between the insert tube 520 and the side wall of the insertion hole 132, thereby improving the reliability of the branch box.

[0058] It is understandable that, referring to Figure 1 and Figure 7 A plurality of dovetail portions 550 are arranged around the end of the sealing box 500 away from the second side plate 130, the insulation tube 600 is located in the sealing cavity 510, and the plurality of dovetail portions 550 are arranged around the insulation tube 600. The plurality of dovetail portions 550 can be pressed into the insulation tube 600 by fasteners such as clamps 610 or cable ties, so that the insulation tube 600 can be stably placed in the sealing box 500, thereby preventing the insulation tube 600 from loosening from the second pipe joint 221, improving the connection stability between the second pipe joint 221 and the insulation tube 600, and reducing the possibility of refrigerant leakage.

[0059] It is understandable that, referring to Figure 1 , Figure 7 and Figure 8 The end surface of the sealing box 500 facing the second side plate 130 is provided with a plurality of buckles 530, and the plurality of buckles 530 are spaced apart along the circumference of the sealing box 500, and the second side plate 130 is provided with a buckle hole 133 for matching the buckles 530. The plurality of buckles 530 are provided on the end surface of the sealing box 500 facing the second side plate 130, and the second side plate 130 is provided with a buckle hole 133. By passing the buckle 530 through the buckle hole 133, the buckle 530 can be conveniently fixed in the buckle hole 133, so that the sealing box 500 can be quickly connected to the second side plate 130, and the sealing box 500 does not need to be fixed by fasteners, thereby improving the installation convenience of the sealing box 500.

[0060] In addition, the plurality of buckles 530 are arranged at intervals along the circumference of the sealing box 500 so that the plurality of buckles 530 can be subjected to balanced forces, thus avoiding stress concentration, reducing the possibility of the buckles 530 breaking, and improving the reliability of the sealing box 500 .

[0061] It is understandable that, referring to Figure 1 , Figure 7 and Figure 8 The buckle 530 includes two connecting parts 531, and the two connecting parts 531 are provided with guiding inclined surfaces on the opposite sides. When the buckle 530 is extended into the card hole 133, the guiding inclined surfaces of the two connecting parts 531 can abut against the side walls of the card hole 133, thereby guiding the two connecting parts 531 to elastically deform and bend in the direction of approaching each other until the two connecting parts 531 pass through the card hole 133, and then the two connecting parts 531 are restored and stuck on one side of the card hole 133 to fix the position of the sealing box 500, avoid the position of the sealing box 500 from shaking, and improve the installation convenience of the sealing box 500.

[0062] It is understandable that, referring to Figures 7 to 9The sealing box 500 includes a first box body 541 and a second box body 542. One side of the first box body 541 and the second box body 542 is hinged, and the other side is fixed by a buckle 530. The first box body 541 is provided with a connecting column 543, and the second box body 542 is provided with a connecting seat 544. The connecting column 543 and the connecting seat 544 are fixedly connected by fasteners. One side of the first box body 541 and the second box body 542 is hinged, so that the first box body 541 and the second box body 542 can rotate around the hinge point, so that the sealing box 500 can be opened or closed, which is convenient for connecting the insulation pipe 600 and improving the installation convenience of the sealing box 500.

[0063] In addition, the first box body 541 is provided with a connecting column 543, the second box body 542 is provided with a connecting seat 544, the fastener is inserted into the connecting column 543, and the fastener and the connecting seat 544 are threadedly connected, so that the fastener can fix the connecting column 543 on the connecting seat 544, which is convenient for fixing the first box body 541 and the second box body 542 together, avoiding separation of the first box body 541 and the second box body 542, and improving the connection reliability of the sealing box 500. Among them, the fastener can be a bolt or a screw, which will not be described one by one here.

[0064] It should be noted that the insulation pipe 600 can be connected to the second pipe joint 221, and then the first box body 541 and the second box body 542 can be opened to arrange the insulation pipe 600 in the sealed cavity 510, and then the first box body 541 and the second box body 542 can be snapped together to tightly connect the first box body 541 and the second box body 542, and finally the first box body 541 and the second box body 542 can be fixed together by fasteners, so as to facilitate the installation of the insulation pipe 600 and enable the insulation pipe 600 to be stably connected to the second pipe joint 221 to avoid loosening.

[0065] It is understandable that, referring to Figures 1 to 3The branch box includes an inner liner 140 arranged in the accommodating chamber 110, the inner liner 140 is provided with an installation chamber 141, at least part of the pipeline assembly 200 is installed in the installation chamber 141, the sensor 300 is connected to the outer wall of the inner liner 140, the inner liner 140 is connected with an air guide tube 150, one end of the air guide tube 150 is located in the installation chamber 141, and the other end of the air guide tube 150 is located in the accommodating chamber 110 and adjacent to the sensor 300. The inner liner 140 is provided in the accommodating chamber 110, the inner liner 140 is provided with an installation chamber 141, and at least part of the pipeline assembly 200 is installed in the installation chamber 141, which can facilitate the fixing of the position of the pipeline assembly 200, reduce the position shaking of the pipeline assembly 200, reduce the possibility of the first pipe joint 211 and the second pipe joint 221 being loosened, and reduce the possibility of refrigerant leakage. In addition, the accommodating cavity 110 and the installation cavity 141 are connected through the air duct 150, and the end of the air duct 150 is adjacent to the sensor 300, so that the refrigerant in the installation cavity 141 can be conducted into the accommodating cavity 110 through the air duct 150, which can facilitate the sensor 300 to quickly detect the leakage of the refrigerant in the installation cavity 141, thereby improving the convenience of detecting refrigerant leakage.

[0066] It should be noted that the inner liner 140 can slow down the heat exchange of the refrigerant in the manifold 210 and the main pipe 220, reduce the heat loss of the refrigerant, and improve the cooling efficiency of the air conditioner. In addition, the inner liner 140 can reduce the condensation of moisture in the air on the outer wall of the housing 100, avoid the condensed water affecting the operation of the air conditioner, and improve the safety of the air conditioner.

[0067] It is understandable that, referring to Figures 1 to 3 The sensor 300 is located at the connection between the first side plate 120 and the second side plate 130. By arranging the sensor 300 at the connection between the first side plate 120 and the second side plate 130, the distance between the sensor 300 and the installation cavity 141, the first pipe joint 211 or the second pipe joint 221 is reduced, so that when the refrigerant leaks, the flow distance of the refrigerant is reduced, so that the sensor 300 can quickly detect the leakage of the refrigerant, thereby reducing the leakage amount of the refrigerant, timely detecting the state of the branch box, and improving the safety of the branch box.

[0068] The multi-split air conditioner provided in the second embodiment of the utility model includes a branch box in the first embodiment of the utility model. Figures 1 to 5As shown, the branch box includes a shell 100, a pipeline assembly 200, a sensor 300, an air guide tube 150 cover and a sealing box 500, the shell 100 has a accommodating chamber 110, and the shell 100 includes a first side plate 120 and a second side plate 130; the pipeline assembly 200 is arranged in the accommodating chamber 110, and the pipeline assembly 200 includes a plurality of manifolds 210 and a main pipe 220, the manifold 210 is penetrated through the first through hole 121 of the first side plate 120, and the end of the manifold 210 is provided with a first pipe joint 211, and the main pipe 220 is penetrated through the first through hole 121 of the second side plate 130. The air duct 150 has two through holes 131, and a second pipe joint 221 is provided at the end of the main pipe 220; the sensor 300 is arranged in the accommodating chamber 110; the air duct 150 cover is connected to the first side plate 120, the air duct 150 cover corresponds to the manifold 210 one by one, the first pipe joint 211 is located in the inner cavity of the air duct 150 cover, and the inner cavity of the air duct 150 cover is connected to the accommodating chamber 110; the sealing box 500 is connected to the second side plate 130, the sealing box 500 has a sealing chamber 510, the second pipe joint 221 is located in the sealing chamber 510, and the sealing chamber 510 is connected to the accommodating chamber 110.

[0069] The housing 100 is provided with a first side plate 120 and a second side plate 130, the first side plate 120 is provided with a first through hole 121, the second side plate 130 is provided with a second through hole 131, a plurality of manifolds 210 and a plurality of main pipes 220 are arranged in the accommodating chamber 110, the manifold 210 is penetrated in the first through hole 121, the main pipe 220 is penetrated in the second through hole 131, and the end of the manifold 210 is connected with a first pipe joint 211, the end of the main pipe 220 is connected with a second pipe joint 221, the first pipe joint 211 is arranged in the inner cavity of the air guide pipe 150 cover, the second pipe joint 221 is arranged in the sealed cavity 510 of the sealed box 500, and the sensor 300 is arranged in the accommodating chamber 110. In the cavity 110, the inner cavity of the air guide pipe 150 cover is connected to the accommodating cavity 110, and the sealed cavity 510 of the sealing box 500 is connected to the accommodating cavity 110, so that the refrigerant leaked from the first pipe joint 211 can be conducted into the accommodating cavity 110 through the inner cavity, and the refrigerant leaked from the second pipe joint 221 can be conducted into the accommodating cavity 110 through the sealed cavity 510, so that the sensor 300 can detect the refrigerant in the accommodating cavity 110, the inner cavity and the sealed cavity 510, so that one sensor 300 can detect multiple possible leakage points of the branch box, which is convenient for the detection of refrigerant, can reduce the number of sensors 300, reduce production costs, and improve the safety of the air conditioner.

[0070] By setting up the branch box of the first aspect embodiment of the utility model, a plurality of possible leakage points of the branch box can be detected by a sensor 300, thereby reducing the possibility of refrigerant leakage, improving the safety of use of the multi-split air conditioner, reducing production costs, and improving the production efficiency of the multi-split air conditioner.

[0071] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A branch box, characterized in that: include: A housing having a receiving cavity, the housing comprising a first side plate and a second side plate; a pipeline assembly arranged in the accommodating cavity, the pipeline assembly comprising a plurality of manifolds and a plurality of main pipes, the manifolds being passed through the first through holes of the first side plate, and the ends of the manifolds being provided with first pipe joints, the main pipes being passed through the second through holes of the second side plate, and the ends of the main pipes being provided with second pipe joints; A sensor is arranged in the accommodating cavity; An air guide cover connected to the first side plate, the air guide cover having an air guide cavity, a plurality of the first pipe joints are located in the air guide cavity, and the air guide cavity is connected to the accommodating cavity; A sealing box is connected to the second side plate, the sealing box has a sealing cavity, the second pipe joint is located in the sealing cavity, and the sealing cavity is connected to the accommodating cavity.

2. The branch box according to claim 1, characterized in that: An opening is arranged on one side of the air guide cover connected to the first side plate, and the first side plate is provided with a plurality of first ventilation holes connected to the opening, and a plurality of first ventilation holes are distributed around the periphery of each first ventilation hole.

3. The branch box according to claim 1, characterized in that: A soft rubber plate is provided on the side of the air guide cover away from the first side plate, and the soft rubber plate is provided with a pipe sleeve, and the pipe sleeve is used to seal the pipeline connected to the first pipe joint.

4. The branch box according to claim 3, characterized in that: The pipe sleeve is connected with a clamp, the pipe sleeve is sleeved on the outer wall of the pipe, and the clamp wraps the pipe sleeve to lock it.

5. The branch box according to claim 1, characterized in that: The sealing box is provided with an inserting tube, and the second side plate is provided with an inserting hole. The inserting tube is passed through the inserting hole to connect the sealing cavity and the accommodating cavity.

6. The branch box according to claim 5, characterized in that: The end surface of the sealing box facing the second side plate is provided with a plurality of buckles, the plurality of buckles are distributed at intervals along the circumference of the sealing box, and the second side plate is provided with buckle holes matching the buckles.

7. The branch box according to claim 5, characterized in that: The sealing box includes a first box body and a second box body, one side of the first box body and the second box body is hinged, and the other side is fixed by a buckle, the first box body is provided with a connecting column, and the second box body is provided with a connecting seat, and the connecting column and the connecting seat are fixedly connected by fasteners.

8. The branch box according to claim 1, characterized in that: The branch box includes an inner shell arranged in a accommodating cavity, the inner shell is provided with an installation cavity, at least part of the pipeline assembly is installed in the installation cavity, the sensor is connected to the outer wall of the inner shell, the inner shell is connected to an air duct, one end of the air duct is located in the installation cavity, and the other end of the air duct is located in the accommodating cavity and adjacent to the sensor.

9. The branch box according to claim 8, characterized in that: The sensor is located at the connection between the first side plate and the second side plate.

10. A multi-split air conditioner, characterized in that: Including the branch box as described in any one of claims 1 to 9.

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