JP5370288B2 - Air conditioner refrigerant branching unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerant distribution unit for an air conditioner having a provisional fixing part on an upper case and a lower case in order to prevent dropping of the lower case during maintenance work of a body part horizontally installed in the roof-space. <P>SOLUTION: The refrigerant distribution unit for the air conditioner includes a piping unit branching a refrigerant from outdoor unit side refrigerant piping to a plurality of pieces of indoor unit side branch refrigerant piping, and a body part storing the piping unit in the inside having a heat insulating material and constituting a contour by the upper case and the lower case. The provisional fixing part including a dowel and a hole for the dowel locked in a releasable manner is provided on both side surfaces of the upper case to which the piping unit is not inserted and a plurality of flange parts formed on the lower case in such a manner of being superposed on the both side surfaces. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

The present invention relates to a refrigerant branch unit of an air conditioner that distributes refrigerant from an outdoor unit to a plurality of indoor units, and more particularly to a temporary fixing structure that temporarily fixes a lower case to an upper case.

  As a refrigerant branch unit of a conventional air conditioner, as shown in FIGS. 12A and 12B, a refrigerant pipe gas pipe 210 and a liquid pipe 211 are connected to a plurality of branch refrigerant pipe gas pipes 220, 230, 240 and a refrigerant branch unit 15 having a pipe unit that branches into liquid pipes 221, 231, 241 and a plurality of electronic expansion valves for adjusting the degree of decompression of the refrigerant in the plurality of branch refrigerant pipes An electrical component box including a main body unit 150 that houses a piping unit including 225, 235, and 245, and a control board 30 that is electrically connected to the plurality of electronic expansion valves 225, 235, and 245 by wiring for the electronic expansion valve. 3, an electrical component box cover 33 for covering the electrical component box 3, and an electrical component box mounting plate 32 having a board fitting claw portion for attaching the electrical component box 3 to the main body 150. It is known those (for example, see Patent Document 1).

  The main body 150 includes a sheet metal case 6 including an upper case 60 and a lower case 61 that form an outer portion, an upper heat insulating material case 50 provided in the upper case 60, and a lower part provided in the lower case 61. A heat insulating material case 5 including a heat insulating material case 51, and an airtight case 4 including an upper airtight case 40 provided in the upper heat insulating material case 50 and a lower airtight case 41 provided in the lower heat insulating material case 51. It is configured.

  The upper case 60, the upper heat insulating material case 50, and the upper sealed case 40 include a refrigerant pipe receiving portion 151 through which the refrigerant pipe gas pipe 210 and the liquid pipe 211 are inserted, and a plurality of branch refrigerant pipe branch gas pipes 220, 230, 240 and a branch refrigerant pipe receiving portion 152 through which the branch liquid pipes 221, 231, 241 are inserted. The refrigerant pipe is connected to the refrigerant pipe connected to the outdoor unit by the gas pipe joint part 212 and the liquid pipe joint part 213, and the plurality of branch refrigerant pipes are the branch gas pipe joint parts 222, 232, 242 and the branch liquid pipe joint part. 223, 233 and 243 are connected to a refrigerant pipe connected to a plurality of indoor units.

  As for the refrigerant piping, the gas pipe 210 and the liquid pipe 211 are bound by the refrigerant pipe receiving portion 151, and the upper sealed case 40 and the lower sealed case 41 divided into the upper and lower parts, and the upper heat insulating material case 50 and the lower heat insulating material case 51. The branch refrigerant pipe 221 and the branch gas pipe 220 are bound together, the branch liquid pipe 231 and the branch gas pipe 230 are bound together, and the branch liquid pipe 241 and the branch gas pipe 240 are joined together. And a plurality of branched refrigerant pipe receiving portions 152 divided vertically are held in close contact with each other horizontally.

  However, during the maintenance of the main body 150, when removing the lower case 61 fixed to the upper case 60 by screwing, the lower case 61 may fall unexpectedly by loosening and removing the plurality of screws. Since it is necessary to push the lower case 61 upward with fingers simultaneously while performing an operation of loosening and removing a plurality of screws, there is a problem that workability is poor.

JP 2006-300381 A

  Therefore, the present invention has been made to solve the above-described problems, and the purpose thereof is to prevent the lower case from dropping when performing maintenance while the main body is suspended. The object is to provide a refrigerant branching unit of an air conditioner provided with a temporary fixing portion.

  In order to achieve the above-described object, the present invention has the following features.

A pipe unit that branches the refrigerant from the refrigerant pipe on the outdoor unit side to a plurality of branch refrigerant pipes on the indoor unit side, and a main body in which the pipe unit is housed in an interior having a heat insulating material, and the outer shell is composed of an upper case and a lower case An air conditioner refrigerant branching unit comprising:
Includes a dowel in the lower portion of the right and left ends of the both side faces of the side where the pipe unit is formed in the upper case is not inserted, the multiple flange portions formed on the lower case so as to overlap on both sides And a dowel hole for releasably engaging with the dowel,
The dowel base is rounded, and a part of the round is in contact with the periphery of the dowel hole so that a temporary fixing portion is provided with a gap between the upper case and the lower case near the dowel. Is provided.

  ADVANTAGE OF THE INVENTION According to this invention, when maintaining in the state which suspended the main-body part, the refrigerant | coolant branch unit of the air conditioner which provided the temporary fixing part in the upper case and the lower case so that a lower case may not be dropped can be provided. Further, the flange portion of the lower case has its strength increased by joining both side portions of the flange portion to the both side surfaces of the adjacent lower case, and can be accurately temporarily fixed while suppressing deformation near the temporary fixing portion. In addition, since the base of the dowel is rounded, it is easy to remove the lower case with fingers placed on the flange.

It is a schematic block diagram of the air conditioner by this invention. It is a perspective view of the refrigerant branch unit by this invention. It is sectional drawing of the refrigerant | coolant branch unit by this invention. It is an internal block diagram of the refrigerant | coolant branch unit by this invention. It is an exploded view of the refrigerant | coolant branch unit by this invention. FIG. 3 is an exploded view of a lower case and an electrical component box of a refrigerant branching unit according to the present invention. It is a refrigerant pipe receiving part detail drawing of the refrigerant branch unit by this invention. FIG. 5 is a cross-sectional view taken along line AA shown in FIG. 4 in the refrigerant branching unit according to the present invention. FIG. 5 is a cross-sectional view taken along line BB shown in FIG. 4 in the refrigerant branching unit according to the present invention. In the refrigerant branching unit according to the present invention, with the lower case removed and looking up from below, (A) is a diagram of the electrical component box attached to the right side as viewed from the outdoor unit side, and (B) is the electrical component box outdoors. It is the figure attached to the left side seeing from the machine side. In the refrigerant branching unit according to the present invention, (A) is a lower case mounting view, and (B) is an enlarged perspective view of a CC cross section of (A). In the refrigerant branching unit according to the conventional example, (A) is an exploded perspective view, and (B) is a sectional view.

  Hereinafter, the best mode for carrying out the present invention will be described in detail as an embodiment based on the accompanying drawings.

<Air conditioner>
The air conditioner 1 shown in FIG. 1 includes an outdoor unit 11 and a plurality of indoor units 12, 13, and 14.

The outdoor unit 11 includes an outdoor heat exchanger, a part of a refrigerant circuit such as a compressor and a four-way valve, a blower fan that allows air to flow to exchange heat between the refrigerant in the outdoor heat exchanger and the outside air, A fan motor for driving the blower fan and a control circuit (none of which is shown) for controlling these components are incorporated.

Each of the indoor units 12, 13, and 14 includes a part of a refrigerant circuit such as an indoor heat exchanger, and a blower fan that causes air to flow in order to exchange heat between the refrigerant in the indoor heat exchanger and the indoor air, A fan motor for driving the blower fan and a control circuit (none of which is shown) for controlling these components are incorporated.

The refrigerant circuit in the outdoor unit 11 and the refrigerant circuit in the indoor units 12, 13, and 14 are connected via the outdoor unit side piping 110 and the indoor unit side piping 120, 130, and 140, and the outdoor unit side piping. A refrigerant branch unit 15 for equally branching the refrigerant path from 110 to the indoor unit side pipes 120, 130, and 140 is installed between the outdoor unit 11 and the plurality of indoor units 12, 13, and 14.

<Refrigerant branch unit>
The refrigerant branching unit 15 shown in FIG. 2 is connected to the outdoor unit side piping 110 and the plurality of indoor unit side pipings 120, 130, and 140, respectively, the piping unit 2 that branches the refrigerant, and the main body that houses the piping unit 2. It is comprised by the part 150 and the electrical component box 3 provided with the control part which controls the electrical component of the piping unit 2. As shown in FIG.

  The refrigerant branching unit 15 is fixed to the ceiling or the like indoors by a plurality of ceiling brackets 62 in a horizontal manner. In order to cope with the environment behind the ceiling, which is likely to be hot and humid, the inside of the main body 150 has a heat insulating property so as not to be affected by temperature changes, and is sealed so as not to be affected by humidity. ing.

As shown in FIGS. 2, 3, 4, and 5, the piping unit 2 includes a refrigerant pipe 21 connected to the outdoor unit side pipe 110, a branching unit 25 accommodated in the main body 150, and an indoor unit side. It consists of branch refrigerant pipes 22, 23, 24 connected to the pipes 120, 130, 140, respectively.

The refrigerant pipe 21 includes a gas pipe 210 and a liquid pipe 211. The gas pipe 210 is provided with a gas pipe joint part 212 in the vicinity of the refrigerant branch unit 15, and the liquid pipe 211 is provided with a liquid pipe joint part 213 in the vicinity of the refrigerant branch unit 15, and the gas pipe joint part 212 and the liquid pipe joint part are provided. By 213, connection to and removal from the outdoor unit side pipe 110 are possible.
The gas pipe 210 and the liquid pipe 211 are horizontally arranged in a state of being separated from each other by 40 mm or more, and are accommodated in the main body 150 from the refrigerant pipe receiving part 151.

The branch refrigerant pipes 22, 23, 24 include branch gas pipes 220, 230, 240 and branch liquid pipes 221, 231, 241. The branch gas pipes 220, 230, and 240 are respectively provided with branch gas pipe joint portions 222, 232, and 242 in the vicinity of the refrigerant branch unit 15, and the branch liquid pipes 221, 231, and 241 are in front of the refrigerant branch unit 15. Sections 223, 233, and 243, and branch gas pipe joint portions 222, 232, and 242 and branch liquid pipe joint portions 223, 233, and 243 can be connected to and detached from indoor unit side pipes 120, 130, and 140, respectively. It becomes possible.

The branch gas pipes 220, 230, and 240 are formed in a straight line, and the branch liquid pipes 221, 231, and 241 are disposed below the branch gas pipes 220, 230, and 240 at a predetermined distance, and are located in front of the main body 150. And the branch gas pipe 220 and the branch liquid pipe 221 become one, the branch gas pipe 230 and the branch liquid pipe 231 become one, and the branch gas pipe 240 and the branch liquid pipe 241 become one. The branch refrigerant pipes 22, 23, and 24 are bundled by the rubber bush 26 so as to be connected to each other and are horizontally arranged with a distance of 40 mm or more from the branch refrigerant pipe receiving part 152 to the main body part 150. Stored.

<Branching part>
The branch unit 25 of the pipe unit 2 shown in FIG. 4 includes a branch pipe 27 that branches the gas pipe 210 into the branch gas pipes 220, 230, and 240, and branch gas pipe temperature sensors provided in the branch gas pipes 220, 230, and 240, respectively. 224, 234, 244, the flow divider 28 for diverting the refrigerant in the liquid pipe 211 to the branch liquid pipes 221, 231, 241, and the electronic expansion valves 225, 235 for adjusting the amount of refrigerant flowing through the branch liquid pipes 221, 231, 241. , 245, branch liquid pipe temperature sensors 226, 236, and 246 provided closer to the indoor units 12, 13, and 14 than the electronic expansion valves 225, 235, and 245, and opening and closing to bypass the refrigerant from the branch pipe 27 to the flow divider 28 And a valve 29.

<Cable>
The branch gas pipe temperature sensors 224, 234, 244 and the branch liquid pipe humidity sensors 226, 236, 246 are connected to signal lines for sending the detected results to the control board 30, and the electronic expansion valves 225, 235, 245 and the open / close valves 29 are connected to wirings for driving them, and a cable 80 in which signal lines and wirings are bundled together is connected to the control board 30 of the electrical component box 3.

<Main body>
The main body 150 shown in FIG. 5 has a configuration in which the piping unit 2 is sandwiched between the sealed case 4, the heat insulating material case 5, and the case 6 in order from the inside.

<Sealed case>
In the sealed case 4, an upper sealed case 40 and a lower sealed case 41 are divided up and down along the center of the diameter of the horizontal refrigerant pipe 21 and the branch refrigerant pipes 22, 23, and 24, and are molded of synthetic resin. Yes.

The upper sealed case 40 shown in FIGS. 3, 4, and 5 includes a storage portion 400 that stores the branch portion 25 of the piping unit 2, and an edge portion 401 that is edged around the storage portion 400 and maintains hermeticity. Become.
The edge 401 has a refrigerant pipe receiving part 151 for receiving the refrigerant pipe 21 and a branch refrigerant pipe receiving part 152 for receiving the branch refrigerant pipes 22, 23, and 24, and a pipe mounting part 402 is semicircular along the pipe. It is extended (continuous formation). Anchors 405 that receive screws, which will be described later, are erected on the left and right ends of the semicircular shape of the pipe mounting portion 402.
A cable lead-out portion 403 that pulls out the cable 80 is also formed in a semicircular shape. Furthermore, the edge 401 is provided with two rows of convex ribs 404 so as to surround the storage portion 400. A heat insulating seal 44 (see FIG. 8) is stuck on the convex rib 404.
An anchor 405 that receives a screw, which will be described later, is erected at an interval from the convex rib 404 provided on the outer side of the two rows. Anchors 405 are also erected at the four corners of edge 401.

The lower sealing case 41 includes a storage portion 410 that stores the branch portion 25 of the piping unit 2, and an edge portion 411 that is edged around the storage portion 410 and maintains hermeticity.

In the edge portion 411, a pipe attachment portion 412 is continuously formed in a semicircular shape at a portion in contact with the refrigerant pipe 21 and the branch refrigerant pipes 22, 23, 24, and a cable lead-out portion 413 for drawing out the cable 80 is semicircular. Are formed continuously. Further, the edge 411 is provided with a concave rib 412 that receives the convex rib 404. Furthermore, a screw hole 415 for screwing to the anchor 405 is provided.

<Insulation case>
The heat insulating material case 5 is formed of foamed polystyrene having excellent heat insulating properties, and has a certain thickness as a whole in order to improve the heat insulating properties.
The heat insulating material case 5 has a portion corresponding to the refrigerant pipe receiving portion 151 and the branch refrigerant pipe receiving portion 152 projecting in a cylindrical shape, and along the center of the pipe diameter of the refrigerant pipe 21 and the branch refrigerant pipes 22, 23, 24. It is divided into a heat insulating material case 50 and a lower heat insulating material case 51.

The upper heat insulating material case 50 is formed so that the inner shape matches the outer shape of the upper sealed case 40. In addition, a cable drawing recess 500 is formed in the cable drawing portion 403 of the upper sealed case 40, and a cable side recess 501 for introducing the drawn cable 80 into the electrical component box 3 on the left side as viewed from the outdoor unit side. Is formed.

The lower heat insulating material case 51 is formed so that the inner shape matches the outer shape of the lower sealed case 41. Further, a cable drawing recess 510 is formed in accordance with the cable drawing portion 413 of the lower sealing case 41, and a cable side recess 511 for introducing the drawn cable 80 into the electrical component box 3 on the left side as viewed from the outdoor unit side. Is formed. Further, a cable bottom recess 512 is provided on the bottom surface of the lower heat insulating material case.

<Case>
The case 6 constituting the outline of the main body 150 is formed by bending a sheet metal, and includes an upper case 60 and a lower case 61.

The upper case 60 includes an outdoor unit side surface 60a, an indoor unit side surface 60b facing the outdoor unit side surface 60a, a first side surface 60c on the left side when viewed from the outdoor unit 11 side, It is in the shape of a box consisting of the second side surface portion 60d on the right side facing the first side surface portion 60c.

The outdoor unit side surface 60a and the indoor unit side surface 60b have lengths up to the center of the pipe diameters of the refrigerant pipe 21 and the branch refrigerant pipes 22, 23, and 24, respectively. In addition, an upper heat insulating material receiving portion 600 cut into a semicircular shape is provided, and a screw hole is provided at the left and right ends so that a ceiling hanging bracket 62 for suspending the refrigerant branch unit 2 from the ceiling can be screwed. A screw hole is provided so that the pipe suspension fitting 63 to be screwed can be screwed.

  The first side surface portion 60c and the second side surface portion 60d have a length that reaches the bottom surface of the main body portion 150, and the electrical component box 3 is connected to the upper and lower ends of the left and right ends by the electrical component box locking claws 320 described later. An electrical component box locking hole 601 is provided for mounting the electronic component box. A dowel 602 that is detachably locked to a dowel hole 612, which will be described later, is provided below the position of the electrical component box lock hole 601 provided below the left and right ends. In addition, a screw mounting portion 603 is provided below the dowel 602 so as to go around to the bottom surface.

The first side surface portion 60c has a first cable outlet 604 formed by a notch groove on the outdoor unit 11 side to the vicinity of the ceiling surface, and is cut out from the bottom to the top. The second side surface portion 60d shown in FIG. 6 has a second cable outlet 605 formed by a notch groove that extends to the middle of the side surface on the outdoor unit 11 side. On the ceiling surface 60e side in the vicinity of the first cable outlet 604 and the second cable outlet 605, a cable outlet cover hole 606 for locking a cable outlet cover 64 described later is provided.

The lower case 61 has a U-shape including an outdoor unit side surface portion 61a, an indoor unit side surface portion 61b facing the outdoor unit side surface portion 61a, and a bottom surface portion 61e.

The outdoor unit side surface 61a and the indoor unit side surface 61b have lengths up to the center of the pipe diameters of the refrigerant pipe 21 and the branch refrigerant pipes 22, 23, and 24, respectively. An upper heat insulating material receiving portion 610 cut out into a semicircular shape is provided.

A portion of the sheet metal forming the lower case 61 extends from the bottom surface portion 61e and is bent, and the flange portion 611 is joined by spot welding to the outdoor unit side surface portion 61a and the indoor unit side surface portion 61b. It has.

The flange portion 611 includes a dowel hole 612 so that the dowel 602 is detachably locked when the lower case 61 is assembled. The bottom surface portion 61e adjacent to the dowel hole 612 is provided with a screw hole.

<Electrical component box>
The electrical component box 3 shown in FIGS. 5 and 6 includes a control board 30 that controls the refrigerant branching unit 15, an electrical component box body 31, an electrical component box mounting plate 32, and an electrical component box cover 33. Yes.

The electrical component box body 31 is made of a U-shaped sheet metal, and the control board 30 and a plurality of terminal blocks 34 are arranged inside the U-shape. A part of the electrical component box body 31 is provided with a cable introduction hole 310 for introducing the cable 80, and the cable 80 is bound to the electrical component box body 31 inside the proximity of the cable introduction hole 310 to the control board 30. A cable introduction guide 311 for guiding is provided.

The electrical component box mounting plate 32 is in the shape of a strip, and includes electrical component box locking claws 320 that are bent in two inwardly symmetrical directions, and two left and right ends on the outer side of the electrical component box body 31. It is welded to.

<Assembly method>
The refrigerant branching unit 15 is assembled by reversing the top and bottom from the installation state suspended from the ceiling. First, the upper case 60 is placed with the ceiling surface portion 60e facing down, and the upper heat insulating material case 50 is stacked therein. The upper heat insulating material case 50 is supported by the heat insulating material receiving portion 600 of the upper case 60.

Next, as shown in FIGS. 4 and 7, the upper sealed case 40 is fitted into the upper heat insulating material case 50. Then, the piping unit 2 is fitted into the piping mounting portion 402 of the upper sealed case 40. The portion of the piping unit 2 where the rubber bush 26 of the gas pipe 210, the liquid pipe 211 and the branch refrigerant pipes 22, 23, 24 is wound is fitted into the pipe mounting portion 402, and the pipe retainer 91 is piped from above the rubber bush 26. The mounting portion 402 is fixed by screwing.

Next, as shown in FIGS. 7 to 9, a pipe suspension fitting 63 whose upper end is screwed to the upper case 60 is provided at the pipe attachment portion 402 of the gas pipe 210 and the branch refrigerant pipe 23. The piping suspension fitting 63 and the piping retainer 91 are fastened together with screws to be fixed to the upper sealed case 40.
The cables 80 are bundled together by a binding tool 82 and pulled out from the cable receiving portion 403 of the upper sealed case 40.

  With this configuration, the pipe unit 2 is fixed to the pipe mounting portion 402 of the upper hermetic case 40 with the pipe presser 91 and the pipe hanging bracket 63 whose upper part is fixed to the upper case 60 and whose lower part extends to the lower end of the pipe presser 91. Thus, by removing the lower case 60, the lower heat insulating material case 51, and the lower sealing case 41, the branch portion 25, the electronic expansion valves 225, 235, 245, etc. constituting the piping unit 2 appear, and the main body portion 150 is removed. Maintenance work can be performed without disassembly.

  Next, the sealing case locking hole 410 of the lower sealing case 41 is inserted in accordance with the sealing case locking claw 406 protruding from the upper sealing case 40. When the upper sealing case 40 and the lower sealing case 41 are combined, the concave rib 414 of the lower sealing case 41 is in close contact with the convex rib 404 of the upper sealing case 40 through the heat insulating seal 44 without any gap. Next, screws 94 are screwed into the anchors 405 at a plurality of positions on the edge 401 from the screw holes 415.

As shown in FIG. 7, the pipe mounting portion 412 of the lower sealing case 41 is fitted to the rubber bush 26 of the gas pipe 210 and the liquid pipe 211 that are housed in the upper sealing case 40, and the pipe mounting portion 402 of the upper sealing case 40. Therefore, the upper sealing case 40 and the lower sealing case 41 are overlapped with each other without a gap, and the inside is sealed. Since the inside is in a sealed state, the branching portion 25 of the piping unit 2 housed in the main body 150 does not come into contact with outside air, and the generation of drain water can be prevented.

Next, the lower heat insulating material case 51 is put on the lower airtight case 41. At this time, in addition to the lower sealing case 41, the pipe retainer 91 and the screw 94 screwed to the pipe hanging fitting 63 are also attached to the lower heat insulating material case 51. Thereby, the exposure to the screw 94 can also be prevented.

The electrical component box 3 is attached to both the first side surface portion 60c and the second side surface portion 60d of the upper case 60. When attached to the second side surface portion 60d on the right side when viewed from the outdoor unit side, as shown in FIG. 10 (A), the cable 80 is used for drawing out the upper heat insulating material case recessed portion 500 and the lower heat insulating material case. Along the recess 510, the first cable bottom guide 512 is led. The cable 80 guided to the cable bottom recess 512 is folded back at the cable bottom recess 512 and drawn out of the main body 150 from the second cable outlet 605.

As shown in FIG. 6, the drawn cable 80 is introduced into the electrical component box 3 from the cable introduction hole 310 of the electrical component box body 150, and is bundled with the electrical component box body 31 by the cable introduction guide 311. Are connected to a plurality of connectors (not shown) on the control board 30.
The electrical component box main body 31 connected to the cable 80 is connected to the electrical component box retaining plate 320 of the electrical component box mounting plate 32 welded to the electrical component box main body 31, and the electrical component box locking hole of the upper case 60. Plug in 601. At this time, the electrical component box locking claws are temporarily fixed with the upper claws hanging. Next, the electric component box body 31 is screwed into the upper case 60 from the inside. As a result, the electrical component box 3 temporarily fixed by the electrical component box locking claws 320 is fixed. An electrical component box cover 33 is placed thereon.

Further, as shown in FIG. 10B, when mounting on the first side surface portion 60c on the left side as viewed from the outdoor unit side, the electrical component box body 31 is turned upside down so that the electrical component box mounting plate 32 has electrical components. The box locking claw 320 is inserted into the locking hole 601 of the upper case 60. By reversing the electrical component box body 31 upside down, the cable introduction hole 310 moves to the ceiling side.

The cable 80 guided to the cable bottom recess 512 crosses the cable bottom recess 512, passes through the cable side recesses 501 and 511, and is drawn out of the main body 150 from the upper side of the first cable outlet 604. It is introduced into the electrical component box from the cable introduction hole 310 of the product box body 150.
With this attachment method, for example, even when the electrical component box 3 is replaced according to the place to be installed at the time of construction, the cable 80 can be easily replaced while being connected.

Next, the cable outlet cover 64 is attached to either the first cable outlet 604 or the second cable outlet 605 on the side where the electrical component box 3 is not installed. The cable outlet cover 64 is formed longer than the first cable outlet 604, and the cable outlet cover hole 606 is also provided at a symmetrical position between the first side surface portion 60c and the second side surface portion 60d. The outlet cover 64 is attached to either side. The upper claw of the cable outlet cover 64 is engaged with the cable outlet cover hole 606 of the upper case 60 and screwed with a screw. As a result, the cable outlet can be concealed, the aesthetics are improved, and dust can be prevented from entering the interior.

Next, the lower case 61 is assembled to the upper case 60 as shown in FIG. At that time, the lower case 61 is temporarily fixed by engaging the dowel 602 provided in the upper case 60 with the dowel hole 612 provided in the lower case 61. Next, the upper case 60 and the lower case 61 are fixed by screwing the screw 94 to the screw mounting portion 603 on the bottom surface 61e of the upper case 60.

At the time of maintenance work, the screw 94 screwed to the screw mounting portion 603 is removed. At this time, even if the screw 94 is removed, the lower case 61 is temporarily fixed because the dowel 602 is locked in the dowel hole 612. Therefore, there is no possibility that the lower case 61 will drop unexpectedly.

Further, the base 602 a of the dowel 602 provided in the upper case 60 is provided with a round (curved surface), and a part of the round (curved surface) abuts the peripheral edge of the dowel hole 612, so that the vicinity of the dowel 602 is provided. Since a slight gap can be created between the upper case 60 and the lower case 61, when the dowel hole 612 is detached from the dowel 602 by placing a finger on the lower case 61, the dowel hole 612 is smoothly removed and the lower case 61 is removed. The case 61 can be easily removed.

In this way, the configuration in which the lower case 61 can be temporarily fixed to the upper case 60 in a detachable manner is a configuration by the dowel 602 provided in the upper case 60 and the dowel hole 612 provided in the lower case 61. It is characterized in that it can be temporarily fixed without using a member.
The dowel 602 and the dowel hole 612 are not limited to the configuration described above, and the upper case 60 may be provided with the dowel hole 612, while the lower case 61 may be provided with the dowel 602.

As described above, according to the configuration of the present invention, the lower case 61 is bent at the upper case 60 and the left side surface portion 60c and the right side surface portion 60d, and the lower case 61 is bent and formed at the upper case 60. An air conditioner that is temporarily fixed by a temporary fixing portion including a dowel 602 provided on a plurality of flange portions 611 overlapping the left side surface portion 60c and the right side surface portion 60d and a dowel hole 612 corresponding to the dowel 602. The refrigerant branch unit of the machine can be provided.

  At that time, the left side surface portion 60c and the right side surface portion 60d of the upper case 60 are joined at joint portions of the outdoor unit side surface portion 61a and the indoor unit side surface portion 61b that are adjacent to each other. The portion 611 is joined at the joint portion between the left side surface portion 60c and the right side surface portion 60d that are adjacent to each other, suppresses deformation of the upper case 60 and the lower case 61, and does not rub in the dowels 602 and dowel holes 612. Since the strength is enhanced as described above, the lower case 61 can be temporarily fixed to the upper case 60 accurately.

  Further, the base 602a of the dowel 602 is rounded (curved surface), and a slight gap is formed between the upper case 60 and the lower case 61 in the vicinity of the dowel 602, so that fingers can be easily placed on the periphery of the flange portion 611. The lower case 61 can be easily removed by smoothly removing the dowel hole 612 from the dowel 602.

DESCRIPTION OF SYMBOLS 1 Air conditioner 11 Outdoor unit 12, 13, 14 Indoor unit 15 Refrigerant branch unit 2 Piping unit 21 Refrigerant piping 22, 23, 24 Branched refrigerant piping 3 Electrical component box 40 Upper sealing case 41 Lower sealing case 50 Upper heat insulating material case 51 Lower heat insulating material case 60 Upper case 602 Dowel 61 Lower case 63 Piping hanging bracket 612 Dowel hole 80 Cable 91 Piping retainer 94 Screw

Claims (1)

A pipe unit that branches the refrigerant from the refrigerant pipe on the outdoor unit side to a plurality of branch refrigerant pipes on the indoor unit side, and a main body in which the pipe unit is housed in an interior having a heat insulating material, and the outer shell is composed of an upper case and a lower case An air conditioner refrigerant branching unit comprising:
Includes a dowel in the lower portion of the right and left ends of the both side surfaces of the side where the pipe unit is formed in the upper case is not inserted, the multiple flange portions formed on the lower case so as to overlap on both sides And a dowel hole for releasably engaging with the dowel,
The dowel base is rounded, and a part of the round is in contact with the periphery of the dowel hole so that a temporary fixing portion is provided with a gap between the upper case and the lower case near the dowel. A refrigerant branching unit for an air conditioner characterized by comprising:

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