JP5231383B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of a multi-type air conditioner that can be connected to a plurality of indoor units with a single outdoor unit.

  In a separate type air conditioner in which the indoor unit and the outdoor unit are separated, the indoor heat exchanger on the indoor unit side and the compressor, four-way valve, outdoor heat exchanger, and expansion valve on the outdoor unit side are connected by refrigerant piping. It constitutes the refrigeration cycle. Furthermore, electrical wiring such as signal lines is connected between the indoor unit and the outdoor unit so that desired air conditioning control can be performed.

  The refrigerant pipe for connecting the indoor unit and the outdoor unit by pipes is connected from the indoor unit on the indoor side to a pipe connection port provided in the outdoor unit on the outdoor side. On the other hand, the electrical wiring that electrically connects the indoor unit and the outdoor unit is drawn from the indoor unit into the outdoor unit outside the outdoor unit and connected to the relay terminal plate.

  In a so-called single-separated air conditioner in which an indoor unit and an outdoor unit correspond one-to-one, a pair of refrigerant pipes and wiring are led and connected from the indoor unit to the outdoor unit. On the other hand, in a so-called multi-air conditioner in which a plurality of indoor units are connected to one outdoor unit, a plurality of sets of refrigerant pipes and wirings are required, so there is no room for connection space.

  Patent document 1 provides a pipe connection port unit and a predetermined mounting angle on the side wall of the outdoor unit, and arranges the pipe connection port unit at the mounting angle, so that a multi-type outdoor unit can be combined with a single separate type outdoor unit. A technique for making the size comparable is disclosed.

  Patent Document 2 discloses a configuration in which a plurality of expansion valve units are arranged in an equipment storage chamber provided on a side surface of an outdoor unit, and electrical wiring is connected to a terminal plate disposed above the front surface of the outdoor unit. Has been. According to this configuration, it is disclosed that a mold for manufacturing a main body exterior of an outdoor unit of a multi air conditioner and a single separate air conditioner can be shared.

JP-A-11-230581 JP 2007-46793 A

  By the way, the outdoor unit may need to be installed on a veranda with a narrow outdoor depth from the indoor side through a limited space such as a window. In such a case, not only the height of the outdoor unit is limited to a predetermined height, but also due to work problems on the outdoor veranda side, the piping connection and electrical wiring connection between the indoor unit and the outdoor unit are connected to the outdoor unit. Sometimes it must be collected on one side.

  In such a case, the multi-air conditioner disclosed in Patent Document 1 discloses a configuration in which the pipe connection port unit is disposed on the side surface of the outdoor unit with a mounting angle, but the relationship with the electrical wiring is not disclosed. It is not a technique that can provide a terminal plate and a pipe connection port at the same time on the side surface, and perform a desired connection operation.

  Further, in the multi-air conditioner of Patent Document 2, since the pipe connection portion and the terminal plate are arranged at different locations, a terminal plate and a pipe connection port are simultaneously provided on the side surface of the outdoor unit, and a desired connection is achieved. It is not a technology that can work.

  A monkey wrench is used to connect the pipe to the pipe connection port of the mounting angle. However, in order to rotate the monkey wrench and tighten the nut, there is sufficient space between the pipe connection ports arranged in a single row. It is necessary to provide an interval (for example, 52 mm pitch). Accordingly, if a plurality of pipe connection ports are provided in the vertical direction at a sufficient interval in the mounting angle, the mounting angle becomes long in the vertical direction.

  Therefore, as a method for preventing the attachment angle from becoming long, a method of providing pipe connection ports at a short pitch in the attachment angle and a method of arranging the pipe connection ports in a staggered manner are conceivable. However, if it is provided at a short pitch, the nut cannot be tightened with a tool such as a monkey spanner, and if it is provided in a staggered manner, it is difficult to tighten the nut on the back side. As described above, a problem arises in workability. Therefore, there is a limit in reducing the pitch between the plurality of pipe connection ports.

  Further, when the terminal plate is provided above the mounting angle, the wiring connected to the terminal plate is hard to bend because its outer side is covered with an insulating material such as vinyl chloride and has rigidity. If the wiring is forcibly bent at an acute angle, the wiring may be cut or the adjacent wirings may come into contact with each other to cause a short circuit. Therefore, in order to bend the wiring and guide it to the rear side (back side) of the outdoor unit, a certain interval must be provided between the terminal plate and the mounting angle. Then, the distance between the mounting angle and the terminal plate cannot be reduced, and if the mounting angle is made longer than a certain value, the terminal plate must be moved upward. As a result, the height of the outdoor unit itself is also increased.

  The present invention has been made in order to solve the above-described problems, and the outdoor of a multi-type air conditioner that can easily perform piping and wiring connection work with an indoor unit without increasing the size of the outdoor unit. The purpose is to provide a machine.

  In order to achieve the above object, the present invention provides a piping that circulates a refrigerant between an indoor unit and a terminal block that is electrically connected to an electrical component provided in the housing and connects wiring from the indoor unit. An outdoor unit of an air conditioner that can be connected to a plurality of indoor units, and includes a plurality of pipe connection ports that connect the plurality of pipe connection ports and a mounting angle that supports the plurality of pipe connection ports. It is provided in the housing so as to be exposed from the wiring connection opening provided in the side panel, and the mounting angle is provided below the terminal block so as to protrude sideways from the side panel of the housing. In addition to supporting a plurality of pipe connection ports in parallel in the vertical direction, a wiring insertion part that allows wiring to be inserted in the front-rear direction is formed inside the pipe connection port (side panel side of the housing). It is the outdoor unit of the air conditioner characterized.

  By passing the wiring connected to the terminal block through the wiring insertion portion, the wiring can be led out to the outside with sufficient clearance without bending the wiring at an acute angle. Thus, by performing the wiring process through the wiring insertion part, the vertical distance between the mounting angle and the terminal block can be reduced. Since the outdoor unit can be made compact, it is not necessary to enlarge the outdoor unit in the vertical direction (height direction) even if the mounting angle is increased in the vertical direction by providing multiple piping connection ports.

  In addition, because the vertical distance between the mounting angle and the terminal block can be set, the pipe connection ports can be provided in a vertical row at intervals, so when installing a pipe to the pipe connection port, the adjacent nut It is easy to perform the tightening operation of the nut without being disturbed by the.

  By providing the wiring insertion portion on the inner side of the pipe connection port, the wiring connected to the terminal plate can be provided over the side panel of the outdoor unit. It is possible to prevent the wiring from interfering with the piping of the outdoor unit.

  Further, the wiring insertion part may be formed by providing an opening in the middle part of the mounting angle, but it is preferably formed by notching the inner upper end of the mounting angle. The notch makes it easier to pass the wiring through the wiring insertion part and facilitates work.

  Moreover, it is preferable that the lower end of the wiring insertion portion is positioned below the uppermost pipe connection port of the mounting angle. Sufficient space can be secured in the wiring insertion part to pass the wiring.

  Furthermore, a plurality of wiring fixtures for fixing the wiring to the side panel of the housing are provided between the wiring connection opening and the mounting angle, and the wiring fixtures are arranged side by side on the side panel of the housing in the front-rear direction. If the distance between the foremost wire fixture and the mounting angle is A and the distance between the wire fixture and the lower end of the wire insertion portion is B, the relational expression of A / 2 ≦ B is established. It is preferable to do this. In this way, by taking a sufficient distance between the wiring fixture and the lower end of the wiring insertion part, it is possible to bend the wiring connected to the terminal block with a sufficient margin and pass it through the wiring insertion part.

  As described above, according to the present invention, wiring processing can be performed by leading the wiring connected to the terminal block to the outside through the wiring insertion portion. Therefore, the vertical distance between the mounting angle and the terminal block is reduced. be able to. Since the outdoor unit can be made compact, even if the mounting angle becomes longer in the vertical direction by providing multiple pipe connection ports, the outdoor unit does not have to be enlarged in the vertical direction. In addition, since the pipe connection ports can be provided in a vertical row at a sufficient interval on the mounting angle, the nut tightening operation can be easily performed when the pipe is attached to the support valve.

Rear view of the outdoor unit of the air conditioner of this embodiment Side view of the outdoor unit of the air conditioner of this embodiment The perspective view which looked at the outdoor unit of the air conditioner of this embodiment from the back side by removing the connection part cover Partially enlarged side view of FIG. CC cross section In FIG. 4, the figure which shows the state which removed wiring and piping DD cross section

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The outdoor unit 1 of the air conditioner of this embodiment is a multi-type outdoor unit 1 of an air conditioner that is connected to a plurality of indoor units (not shown) to form an integrated refrigeration cycle.

  As shown in FIG. 4, the outdoor unit 1 is connected to an indoor unit disposed indoors by a pipe 2 through which a refrigerant flows and a wiring 3 that performs power supply, communication, and the like. An electric unit (not shown) such as a compressor on the outdoor unit side, a four-way valve, an outdoor heat exchanger 13 and an expansion valve is installed in a substantially rectangular parallelepiped housing 4 of the outdoor unit 1. An indoor heat exchanger (not shown) is internally provided, and these are sequentially connected to the pipe 2 to constitute a refrigeration cycle. The refrigerant flows through the pipe 2 and the refrigeration cycle is operated to perform cooling and heating operations. An exhaust port 5 is provided in the front panel 4 a of the housing 4. A suction port 4 c is provided on the back side of the housing 3, and the outdoor heat exchanger 13 is disposed in the housing 4 so as to face the suction port 4 c, and is located closer to the exhaust port 5 than the outdoor heat exchanger 13. An outdoor blower (not shown) is provided. Generally, the outdoor unit 1 is disposed such that the back side faces the outer wall of a building, and the front panel 4a faces the outdoor side.

  Two pipes 2 are connected to the outdoor unit 1 for each indoor unit. That is, during the cooling operation, the refrigerant passage pipe 2 flowing from the outdoor unit 1 to the indoor unit side and the refrigerant passage pipe 2 flowing from the indoor unit to the outdoor unit 1 side are connected. Note that the refrigerant flow is reversed during heating operation. These pipes 2 are connected to a pipe connection portion 6 provided on the side panel 4b of the casing 4 of the outdoor unit 1.

  As shown in FIG. 3, the pipe connection portion 6 includes a mounting angle 7 provided to project from the side panel 4 b of the housing 4 of the outdoor unit 1 in the lateral direction, and a pipe connection port 8 a supported by the mounting angle 7. And a joint 8 having

  In one set of joints 8, one side of the expansion valve 9 is connected to the front side of the one joint 8 (the front panel 4 a side of the housing 1). The expansion valve 9 is an electric valve, and its valve opening degree can be adjusted via a drive unit (not shown) such as a motor. The other side of the expansion valve 9 is connected to a first header pipe (not shown) via a branch pipe, and is connected to the outdoor heat exchanger 13 inside the outdoor unit 1 from the first header pipe. Further, of the pair of joints 8, a branch pipe 11 reaching the suction port side of a compressor (not shown) and a second header pipe 12 converging on the branch pipe 11 are connected to the front side of the other joint 8. . In this way, the mounting angle 7 is provided with a pair of joints 8 at predetermined intervals in the vertical direction, for example, four alternately, for a total of eight.

  Both header tubes are arranged in the vertical direction along the mounting angle 7. The expansion valve, the first header pipe, and the second header pipe 12 are unitized according to the number of indoor units to be connected.

  The mounting angle 7 is formed by bending a central portion of a long plate-like metal plate extending in the vertical direction into an L shape along a vertical folding line, and one piece thereof is a side surface of the casing 4 of the outdoor unit 1. The other piece 7a that is screwed to the panel 4b and protrudes from the side panel 4b has a predetermined interval (for example, 52 mm pitch) along the longitudinal direction (longitudinal direction), and a support hole for supporting the joint 8 13 is formed. Further, the mounting angle 7 is bent at the periphery to form a rib 7b, whereby the strength of the mounting angle 7 itself is reinforced.

  In each support hole 13, a plurality of joints 8 penetrates in the front-rear direction and is fixed to the mounting angle 7 by nuts. The rear side (back side) end of the joint 8 becomes a pipe connection port 8a, and the pipe 2 from the inside of the outdoor unit 1 is connected.

  Further, the mounting angle 7 is provided with a wiring insertion portion 14 on the inner side (the side panel 4b side of the outdoor unit 1) than the support hole 13. As shown in FIGS. 5 and 7, the wiring insertion portion 14 is formed by cutting away the corner portion of the inner upper end of the other piece 7 a at the L-shaped corner portion of the mounting angle 7. The notch as the wiring insertion portion 14 becomes a path of the wiring 3.

  The wiring insertion portion 14 is set so that the lower end thereof is positioned below the pipe connection port 8 a of the uppermost joint 8 of the mounting angle 7. With this configuration, a sufficient space for passing the wiring 3 can be secured. Further, the width of the wiring insertion part 14 is adjusted according to the maximum number of the wirings 3. In the above description, a notch is formed in the upper end of the mounting angle 7 to form the wiring insertion portion 14. However, an opening may be formed in the middle portion of the mounting angle 7 and the opening may be used as the wiring insertion portion 14.

  As shown in FIG. 4, the outdoor unit 1 is provided with a terminal block 15 to which the wiring 3 from the indoor unit is connected. The terminal block 15 is provided in the housing 4 above the mounting angle 7 so as to face outward from the wiring connection opening 16 formed in the side panel 4 b of the housing 4. The terminal block 15 is electrically connected to a circuit (not shown) of an electrical component in the housing 4 via a lead wire (not shown).

  The terminal block 15 is provided with a plurality of terminal plates 17 arranged in the front-rear direction and partitioned by a partition wall 18. These terminal plates 17 are made of a conductive metal plate, and the wiring 3 can be connected to each terminal plate 17.

  Further, as shown in FIG. 4, a plurality of wiring fixtures 19 are arranged in parallel in the front-rear direction between the wiring connection opening 16 and the mounting angle 7 and on the side panel 4 b of the housing 4 of the outdoor unit 1. Provided. The wiring fixture 19 is formed by press-molding a metal plate material in a bow shape so as to fix the wiring 3 so as not to be detached from the terminal block 15. Both ends of the wiring fixture 19 are screwed to the side panel 4b of the housing 4, and the wiring 3 can be sandwiched between the wiring fixture 19 and the side panel 4b.

  The rearmost wiring fixture 19 is provided on the front side of the mounting angle 7. Further, as shown in FIG. 6, the distance between the foremost end of the wiring fixture 19 provided on the most front side and the mounting angle 7 is A, and the lower end of the wiring fixture 19 and the lower end of the wiring insertion portion 14 Is set such that the relational expression of A / 2 ≦ B holds. According to this configuration, the space between the lower end of the wiring fixture 19 and the lower end of the wiring insertion portion 14 can be sufficiently secured, so that the rigid wiring 3 is coated with an insulating material such as vinyl chloride on the outside. It can be bent with a margin and guided to the rear side of the outdoor unit 1.

  As shown in FIGS. 1 and 2, a connection portion cover 20 is provided on the side panel 4 b of the housing 4 so as to cover the pipe connection portion 6, the terminal block 15 and the wiring fixture 19 as described above. The connection portion cover 20 is made of a resin molded product formed in a box shape, and is screwed to the side panel 4b of the housing 4 of the outdoor unit 1. Further, the connection portion cover 20 is provided with an opening 21 at a rear portion facing the mounting angle 7, and a pipe connection port 8 a of the mounting angle 7 appears from the rear opening 21. The pipe 2 from the indoor unit is connected to the pipe connection port 8a through the opening 21. In addition, the wiring 3 from the indoor unit is connected to the terminal block 15 through the opening 21 and the wiring insertion part 14.

  In the above configuration, a method of connecting the pipe 2 and the wiring 3 from the indoor unit to the outdoor unit 1 will be described.

  First, the connection portion cover 20 fixed with screws to the side panel 4b of the housing 4 is removed. Then, the pipe 2 from the indoor unit is fixed and connected to the pipe connection port 8 a supported by the mounting angle 7 with the nut 22. At this time, since the support holes 13 for supporting the pipe connection port 8a are provided in a vertical line with a sufficient interval, it is easy to tighten the nut 22 using a tool such as a monkey spanner.

  Next, the tip of the insulation coating cord of the wiring 3 is stripped and connected to the terminal plate 17 of the terminal block 15 disposed in the housing 4 through the wiring connection opening 16 of the side panel 4b. Then, the wiring 3 is surrounded by the wiring fixing tool 19 and is pressed and fixed to the side panel 4b of the housing 4 with screws, so that the wiring 3 does not come off from the terminal board 17.

  Then, the wiring 3 is bundled along the side panel 4b, and this bundle is stored in the notch which is the wiring insertion portion 14 of the mounting angle 7, and after passing from the front to the rear, the connection portion cover 20 is covered again, The connection portion cover 20 is fixed to the side panel 4a of the housing 4 with screws. The upper part of the wiring insertion part 14 is regulated by the connection part cover 20.

  Thus, since the wiring 3 process can be performed through the notch 10 provided in the mounting angle 7, it is possible to close the space between the mounting angle 7 and the wiring fixture 19. Therefore, since the space can be saved, the outdoor unit 1 can be made compact as a whole, and the outdoor unit 1 does not need to be enlarged in the vertical direction (height direction). It can be shared with the mold of an outdoor unit of a single separate air conditioner. In addition, since the pipe connection ports 8a can be provided in a vertical line with a distance corresponding to the distance between the mounting angle 7 and the terminal block 15, when installing the pipe 2 to the pipe connection port 8a, the nut Can be easily tightened. Further, by arranging a plurality of wires 3 in a bundle and passing them through the notches of the mounting angle 7, it is possible to perform wiring processing in an aligned manner. When used as an outdoor unit of a single separate air conditioner, the mounting angle 7 and the connection portion cover 20 are not necessary. Further, the expansion valve 9 and the like can be accommodated in the housing 4.

1 Outdoor Unit 2 Piping 3 Wiring 4 Housing 4b Side Panel 6 Piping Connection 7 Mounting Angle 8 Joint 8a Piping Connection 10 Wiring Insertion (Notch)
11 Terminal Block 12 Wiring Connection Opening 15 Wiring Fixing Tool

Claims (4)

A terminal block that is electrically connected to an electrical component provided in the housing and that connects wiring from the indoor unit, a plurality of piping connection ports that connect piping that circulates refrigerant between the indoor unit, and a plurality of ports An outdoor unit of an air conditioner that can be connected to a plurality of indoor units.
The terminal block is provided in the casing so as to be exposed from the wiring connection opening provided in the side panel of the casing,
The mounting angle is lower than the terminal block and is provided so as to protrude laterally from the side panel of the housing, and supports the plurality of pipe connection ports in parallel in the vertical direction, An outdoor unit for an air conditioner, wherein a wiring insertion portion through which wiring can be inserted in the front-rear direction is formed inside the pipe connection port. The outdoor unit of an air conditioner according to claim 1, wherein the wiring insertion part is formed by cutting out an inner upper end of the mounting angle. The outdoor unit of the air conditioner according to claim 2, wherein a lower end of the wiring insertion part is positioned below a topmost pipe connection port of the mounting angle. Between the wiring connection opening and the mounting angle, a plurality of wiring fixtures for fixing the wiring to the side panel of the casing are provided, and the wiring fixtures are provided side by side on the side panel of the casing in the front-rear direction. And
When the distance between the foremost wire fixture and the mounting angle is A, and the distance between the wire fixture and the lower end of the wire insertion portion is B,
A / 2 ≦ B
The outdoor unit of the air conditioner according to claim 2 or 3, wherein the following relational expression is satisfied.

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