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 pipe 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 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 first pipe connector is located in an inner cavity of the gas-guide pipe cover which is communicated 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 first aspect of the utility model, the branch box includes a shell, a pipeline assembly, a sensor, a plurality of air duct covers and a sealing box, the shell has a accommodating cavity, and the shell includes a first side plate and a second side plate; the pipeline assembly is arranged in the accommodating cavity, the pipeline assembly includes a plurality of manifolds and a plurality of main pipes, 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 cavity; the air duct cover is connected to the first side plate, the plurality of air duct covers are arranged one-to-one with the plurality of manifolds, the first pipe joint is located in the inner cavity of the air duct cover, and the inner cavity of the air duct cover is connected to the accommodating cavity; the 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 sealed cavity is connected to the accommodating cavity.

[0006] The branch box 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 first 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 pipe cover, the second pipe joint is arranged in the sealed cavity of the sealing box, the sensor is arranged in the accommodating cavity, the inner cavity of the air guide pipe cover 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 inner 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 inner 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, a first ventilation hole is provided on the end surface of the air duct cover facing the first side plate, the first through hole is connected to the first ventilation hole, and the air duct cover is sealedly connected to the first side plate.

[0009] According to some embodiments of the utility model, the first side panel is provided with a plurality of first clamping holes surrounding the first through hole, and the end surface of the air duct cover facing the first side panel is provided with a first clamping buckle, and the first clamping buckle includes a clamping frame, and the clamping frame and the end surface of the air duct cover form a groove, and the clamping frame can move in the first clamping hole to allow the first side panel to be clamped into the groove.

[0010] According to some embodiments of the utility model, the first side plate is provided with a positioning hole, and the end surface of the air guide tube cover facing the first side plate is provided with a positioning column, and when the first side plate is inserted into the groove, the positioning column is located in the positioning hole.

[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, the insert tube is passed through the insert hole, and the insert tube connects the sealing cavity and the accommodating cavity.

[0012] According to some embodiments of the utility model, a plurality of second buckles are provided on the end surface of the sealing box facing the second side plate, the plurality of second buckles are distributed at intervals along the circumference of the sealing box, and the second side plate is provided with second buckle holes matching the second 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 with 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 is 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 present 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 5A cross-sectional view of a sealing box of a branch box according to an embodiment of the first aspect of the utility model;

[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 for Figure 6 A partial enlarged view of point B;

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

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

[0029] Fig.10 A schematic diagram of a sealing box of a branch box according to an embodiment of the first aspect of the utility model;

[0030] Fig.11 It is a schematic diagram of the expansion of the sealing box of the branch box of the first embodiment of the utility model.

[0031] The figures are as follows:

[0032] Shell 100, accommodating cavity 110, first side plate 120, first through hole 121, first clamping hole 122, positioning hole 123, second side plate 130, second through hole 131, plug hole 132, second clamping hole 133, liner 140, installation cavity 141, air guide tube 150;

[0033] Pipeline assembly 200, manifold 210, first pipe joint 211, main pipe 220, second pipe joint 221;

[0034] Sensor 300;

[0035] The airway cover 400, the inner cavity 410, the first vent hole 411, the first buckle 420, the clamping frame 421, the groove 422, the positioning column 430, and the first dovetail portion 440;

[0036] Sealing box 500, sealing cavity 510, inserting tube 520, second buckle 530, connecting portion 531, first box body 541, second box body 542, connecting column 543, connecting seat 544, second dovetail portion 550;

[0037] Insulation pipe 600 and throat clamp 610. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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 accommodating chamber through an air guide pipe cover, and the second pipe joint is connected to the accommodating chamber through a sealing box, so that possible leakage points of the manifold and the main pipe can be conducted to the accommodating chamber, and a sensor is arranged in the accommodating chamber 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.

[0045] like Figures 1 to 5 As 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, a plurality of air guide tube covers 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 is penetrated through the second side plate 1 The first side plate 120 has a second through hole 131 formed therein, 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 duct cover 400 is connected to the first side plate 120, and the plurality of air duct covers 400 correspond to the plurality of manifolds 210 one by one, and the first pipe joint 211 is located in the inner cavity 410 of the air duct cover 400, and the inner cavity 410 of the air duct cover 400 is connected to the accommodating cavity 110; the sealing box 500 is connected to the second side plate 130, and the sealing box 500 has a sealing cavity 510, and the second pipe joint 221 is located in the sealing cavity 510, and the sealing cavity 510 is connected to the accommodating cavity 110.

[0046] 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 manifolds 210 are inserted in the first through hole 121, the main pipes 220 are inserted in the second through hole 131, and the ends of the manifolds 210 are connected with a first pipe joint 211, the ends of the main pipes 220 are connected with a second pipe joint 221, the first pipe joint 211 is arranged in the inner cavity 410 of the air guide cover 400, 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. 0, by setting the inner cavity 410 of the air guide duct cover 400 to be in communication with the accommodating cavity 110, the sealed cavity 510 of the sealing box 500 is in communication with the accommodating cavity 110, so that the refrigerant leaking from the first pipe joint 211 can be conducted into the accommodating cavity 110 through the inner cavity 410, and the refrigerant leaking 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 410 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 the refrigerant, can reduce the number of sensors 300, reduce the production cost, and improve the safety of the air conditioner.

[0047] 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.

[0048] 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 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 inner cavity 410 of the air guide tube cover 400 and the second pipe joint 221 to be located in the sealed cavity 510 of the sealing box 500, when the refrigerant leaks, it can be conducted to the accommodating cavity 110 through the inner cavity 410 or the sealed 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.

[0049] It is understandable that, referring to Figure 3 and Figure 4 The end surface of the air duct cover 400 facing the first side plate 120 is provided with a first vent hole 411, and the first through hole 121 is connected to the first vent hole 411, and the air duct cover 400 is sealed and connected to the first side plate 120. The first vent hole 411 is provided on the end surface of the air duct cover 400 facing the first side plate 120, so that when the air duct cover 400 is connected to the first side plate 120, the first vent hole 411 can be connected to the first through hole 121, so that the refrigerant at the first pipe joint 211 can be conducted into the accommodating cavity 110, so that the refrigerant in the inner cavity 410 can flow through the first vent hole 411, the first through hole 121 and the accommodating cavity 110 in sequence, so that the sensor 300 can detect the refrigerant leakage at the first pipe joint 211.

[0050] In addition, the air duct cover 400 and the first side plate 120 are sealed and connected, so that the air duct cover 400 and the first side plate 120 are closely fitted, and the refrigerant is prevented from leaking from the gap between the air duct cover 400 and the first side plate 120, thereby improving the reliability of the branch box. Among them, the air duct cover 400 and the first side plate 120 can be filled with sealant or a sealing gasket can be provided, which can prevent the refrigerant from leaking from the gap between the air duct cover 400 and the first side plate 120, and will not be described in detail here.

[0051] It is understandable that, referring to Figure 1 and Figure 8 A plurality of first dovetail portions 440 are arranged around the end of the air duct cover 400 away from the first side plate 120, the insulation pipe 600 is located in the inner cavity 410, and the plurality of first dovetail portions 440 are arranged around the insulation pipe 600, and the plurality of first dovetail portions 440 can be pressed in the insulation pipe 600 by fasteners such as throat clamps 610 or cable ties, so that the insulation pipe 600 can be stably placed in the air duct cover 400, and the insulation pipe 600 and the first pipe joint 211 can be prevented from loosening, thereby improving the connection stability between the first joint and the insulation pipe 600, and preventing the refrigerant from leaking out of the gap between the air duct cover 400 and the insulation pipe 600, thereby improving the sealing performance of the air duct cover 400.

[0052] It is understandable that, referring to Figures 6 to 8The first side plate 120 is provided with a plurality of first clamping holes 122 surrounding the first through hole 121, and a first clamping buckle 420 is provided on the end surface of the air duct cover 400 facing the first side plate 120. The first clamping buckle 420 includes a clamping frame 421, and the clamping frame 421 and the end surface of the air duct cover 400 form a groove 422. The clamping frame 421 can move in the first clamping hole 122 so that the first side plate 120 is clamped into the groove 422. A plurality of first clamping holes 122 are arranged around the first through hole 121, and a first buckle 420 is provided on the end surface of the air duct cover 400 facing the first side plate 120. The clamping frame 421 is inserted into the first clamping hole 122, and then the air duct cover 400 is rotated so that the first side plate 120 is clamped into the groove 422, so that the clamping frame 421 can be fixed in the first clamping hole 122, thereby making it convenient to quickly position the air duct cover 400 in the first through hole 121 without the need for connection through fasteners, thereby improving the installation convenience of the air duct cover 400.

[0053] It should be noted that the number of the first clamping holes 122 is set to be multiple, and the number of the clamping frames 421 can be set to one, so that the clamping frame 421 can be inserted into any of the first clamping holes 122, thereby improving the installation convenience of the air duct cover 400. In addition, the number of the clamping frames 421 can be set to be multiple, so that the first clamping holes 122 and the clamping frames 421 are in one-to-one correspondence, so that each clamping frame 421 can be inserted into the first clamping hole 122, reducing the force on a single clamping frame 421, and balancing the force on the air duct cover 400, improving the connection reliability between the air duct cover 400 and the first side plate 120, reducing the possibility of separation of the air duct cover 400 and the first side plate 120, and improving the reliability of the branch box.

[0054] It is understandable that, referring to Figures 6 to 8 The first side plate 120 is provided with a positioning hole 123, and the end surface of the air duct cover 400 facing the first side plate 120 is provided with a positioning column 430. When the first side plate 120 is inserted into the groove 422, the positioning column 430 is located in the positioning hole 123. By setting the positioning column 430 to penetrate the positioning hole 123 to limit the position of the air duct cover 400, the position of the air duct cover 400 is prevented from shaking, so that the first side plate 120 can be stabilized in the groove 422, and the clamping frame 421 is prevented from sliding out of the first clamping hole 122, thereby improving the connection reliability between the air duct cover 400 and the first side plate 120.

[0055] It should be noted that the first side plate 120 is a sheet metal part. When the air duct cover 400 is installed on the first side plate 120, the clamping frame 421 is inserted into the first clamping hole 122. At this time, the positioning column 430 abuts against the wall surface of the first side plate 120. Then the air duct cover 400 is rotated and pressed along the axial direction of the air duct cover 400 to elastically deform the first side plate 120 so that the first side plate 120 can be inserted into the groove 422. At the same time, the positioning column 430 is inserted into the positioning hole 123. Then the first side plate 120 is restored, and the air duct cover 400 is fixedly connected to the first side plate 120, which reduces the possibility of the air duct cover 400 loosening and improves the connection reliability of the air duct cover 400.

[0056] It is understandable that, referring to Figure 5 , Fig. 9 and Fig.10 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 insert 520 connects the sealing chamber 510 with the accommodating chamber 110. 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 chamber 510 can be connected to the accommodating chamber 110 through the insert 520, which facilitates the sensor 300 to 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 insert 520, the plug hole 132 and the accommodating chamber 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.

[0057] 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 .

[0058] 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.

[0059] It is understandable that, referring to Figure 1 and Fig. 9A plurality of second dovetail portions 550 are arranged around the end of the sealing box 500 away from the second side plate 130, the insulation pipe 600 is located in the sealing cavity 510, and the plurality of second dovetail portions 550 are arranged around the insulation pipe 600. The plurality of second dovetail portions 550 can be pressed into the insulation pipe 600 by fasteners such as throat clamps 610 or cable ties, so that the insulation pipe 600 can be stably placed in the sealing box 500, thereby preventing the insulation pipe 600 from loosening from the second pipe joint 221, improving the connection stability between the second pipe joint 221 and the insulation pipe 600, and reducing the possibility of refrigerant leakage.

[0060] It is understandable that, referring to Fig. 9 and Fig.10 The end surface of the sealing box 500 facing the second side plate 130 is provided with a plurality of second buckles 530, and the plurality of second buckles 530 are distributed at intervals along the circumference of the sealing box 500, and the second side plate 130 is provided with a second clamping hole 133 matching the second buckle 530. The plurality of second 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 second clamping hole 133. By inserting the second buckle 530 into the second clamping hole 133, the second buckle 530 can be conveniently fixed in the second clamping 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.

[0061] In addition, the plurality of second buckles 530 are arranged at intervals along the circumference of the sealing box 500 so that the plurality of second buckles 530 can be subjected to balanced forces, thus avoiding stress concentration, reducing the possibility of the second buckles 530 breaking, and improving the reliability of the sealing box 500.

[0062] It is understandable that, referring to Figure 5 , Fig. 9 and Fig.10 The second 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 second buckle 530 is extended into the second clamping hole 133, the guiding inclined surfaces of the two connecting parts 531 can abut against the side walls of the second clamping 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 second clamping hole 133, and then the two connecting parts 531 are restored and clamped on one side of the second clamping hole 133 to fix the position of the sealing box 500, avoid shaking of the position of the sealing box 500, and improve the installation convenience of the sealing box 500.

[0063] It is understandable that, referring to Figures 9 to 11The 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. 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 a fastener. 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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 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 passed 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 passed through the second through hole 121 of the second side plate 130. 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 cavity 110; the air duct cover 400 is connected to the first side plate 120, the air duct cover 400 corresponds to the manifold 210 one by one, the first pipe joint 211 is located in the inner cavity 410 of the air duct cover 400, and the inner cavity 410 of the air duct cover 400 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.

[0070] 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 manifolds 210 are inserted in the first through hole 121, the main pipes 220 are inserted in the second through hole 131, and the ends of the manifolds 210 are connected with a first pipe joint 211, the ends of the main pipes 220 are connected with a second pipe joint 221, the first pipe joint 211 is arranged in the inner cavity 410 of the air guide cover 400, 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. 0, by setting the inner cavity 410 of the air guide duct cover 400 to be in communication with the accommodating cavity 110, the sealed cavity 510 of the sealing box 500 is in communication with the accommodating cavity 110, so that the refrigerant leaking from the first pipe joint 211 can be conducted into the accommodating cavity 110 through the inner cavity 410, and the refrigerant leaking 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 410 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 the refrigerant, can reduce the number of sensors 300, reduce the production cost, and improve the safety of the air conditioner.

[0071] 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.

[0072] 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; A plurality of airway covers are connected to the first side plate, the plurality of airway covers are arranged in one-to-one correspondence with the manifold, the first pipe joint is located in the inner cavity of the airway cover, and the inner cavity of the airway cover 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: The end surface of the air duct cover facing the first side plate is provided with a first vent hole, the first through hole is connected to the first vent hole, and the air duct cover is sealedly connected to the first side plate.

3. The branch box according to claim 2, characterized in that: The first side panel is provided with a plurality of first clamping holes surrounding the first through hole, and the end surface of the air duct cover facing the first side panel is provided with a first clamping buckle, and the first clamping buckle includes a clamping frame, and the clamping frame and the end surface of the air duct cover form a groove, and the clamping frame can move in the first clamping hole to allow the first side panel to be clamped into the groove.

4. The branch box according to claim 3, characterized in that: The first side plate is provided with a positioning hole, and the end surface of the air guide tube cover facing the first side plate is provided with a positioning column. When the first side plate is inserted into the groove, the positioning column is located in the positioning hole.

5. The branch box according to claim 1, characterized in that: The sealing box is provided with an inserting tube, the second side plate is provided with an inserting hole, the inserting tube is passed through the inserting hole, and the inserting tube communicates the sealing cavity with 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 second buckles, the plurality of second buckles are distributed at intervals along the circumference of the sealing box, and the second side plate is provided with second buckle holes matching the second 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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