JP6344567B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to an outdoor unit of a large air conditioner that sucks air from the side surface of the housing into the housing and blows it out from the top surface of the housing.

  Some outdoor units of conventional air conditioners blow out from the top of the housing after sucking air from the side and exchanging heat with the refrigerant in the heat exchanger. This outdoor unit that blows out air from the top surface is a large outdoor unit that is installed on the rooftop of a building or commercial facility and connected to a plurality of indoor units through refrigerant piping. The housing includes a heat exchanger, a compressor, an accumulator, a blower fan, an electrical component box, and the like.

  In the outdoor unit that blows air from the top surface, the suction port is formed on both side surfaces and the back surface of the housing, and the air outlet is formed on the top surface of the housing. A heat exchanger that exchanges heat between the air sucked from the suction port and the refrigerant is disposed on the suction port side of the housing, and a compressor and an accumulator are disposed on the bottom surface of the housing. In addition, a blower fan that blows out from the air outlet the air that has exchanged heat with the refrigerant by the suction heat exchanger from the air inlet is disposed on the air outlet side of the housing.

  As an outdoor unit that blows out air from the top surface, an electrical component box containing electrical components for controlling a compressor, a blower fan, and the like is disposed on the front side of the housing. Is known in which a transformer for transforming (stepping down) the power supply voltage of a commercial power supply is housed (see, for example, Patent Document 1).

  This electrical component box is arranged in the air passage connecting the suction port and the air outlet, and rainwater may enter the air passage from the air outlet on the top surface. Rainwater countermeasures such as filling in are taken.

  However, in such an outdoor unit that blows out air from the top surface, if the power supply voltage of the commercial power supply increases, the transformer becomes larger and the weight (for example, 5.5 kg) becomes heavier. When the electrical component box in which is stored is attached to the housing, the total weight of the electrical component box becomes heavy, and the mounting operation of the electrical component box becomes difficult.

  Install this large transformer on the back of the electrical component box, as the housing does not increase in size and should not affect the layout of the heat exchanger, compressor, etc. Can be considered.

  Furthermore, when mounting a large transformer on the back of the electrical component box, if a mounting member such as a screw is used, it is necessary to form a mounting hole on the back of the electrical component box, or the tip of the screw is Since it hits the back of the electrical component box and is scratched, rain water also enters the back of the electrical component box to prevent rainwater from entering the electrical component box before and after attaching a large transformer to the rear of the electrical component box. Countermeasures are required.

  By the way, as shown in FIGS. 10A and 10B, the outdoor unit of this type of air conditioner includes a standard size casing 100A and a width direction (see FIG. In b), two types of casing 100B having a large length in the left-right direction) are prepared.

  Each of the casings 100A and 100B is formed in a box shape by supporting columns 120 upright from the four corners of the bases 110a and 110b and attaching the top panel 130 to the upper ends thereof. Further, two connecting plates 140 and 140 are spanned between the columns 100A and 100B so as to be parallel to each other, and the electrical component box 150 is screwed between the connecting plates 140 and 140. It is fixed.

  The electrical component box 150 is common to both types of casings 100A and 100B, and one side surface is fixed to the connecting plates 140 and 140 via predetermined hinge means, and the electrical component box 150 is rotated by the hinge means. It can be moved in and out of the casings 100A and 100B. The electrical component box 150 is closed and its upper and lower surfaces are fixed to the connecting plates 140 and 140 with screws.

  However, when the above-described large transformer is mounted on the electrical component box 150, the conventional electrical component box 150 and the casings 100A and 100B have the mounting structure of the electrical component box 150 during transportation and maintenance of the casings 100A and 100B. There is a risk that the struts and the hinge means may be damaged without being able to support the 150 load.

JP 2009-180388 A

  Therefore, the present invention provides an outdoor unit for an air conditioner that does not break the case during transportation or maintenance even if a heavy electrical component box equipped with a large transformer is attached to the case. With the goal.

In order to solve the problems described above, the present invention provides an air conditioner outdoor unit in which a rectangular parallelepiped electrical component box is disposed along one side surface of a box-shaped casing. Has first and second struts erected along the one side surface, and the first and second struts spanned between the first and second struts so as to be parallel to each other vertically. 2 connecting plates and a sub-pillar erected in parallel with the first and second support columns are provided, and the electrical component box is fixed to the first connecting plate on the upper surface of the electrical component box. A first fixing portion is provided, and a second side for fixing the electrical component box to the first support column or the second support column is provided on a side surface of the electrical component box facing the first support column. A fixing portion is provided and on the side surface of the electrical component box facing the sub-pillar. It is characterized in that a hinge portion for rotatably supported to the electrical component box to the sub-pillar, the electrical component box and a third fixing portion for fixing to the sub-pillar is provided.

  According to the present invention, a heavy weight electrical component box is provided by providing a fixing portion on each of the upper surface and the left and right side surfaces of the electrical component box, and fixing the electrical component box to the housing via each fixed portion. Even if attached to the housing, the housing can be prevented from being damaged during transportation or maintenance. In addition, when using a large base where the interval between the columns is larger than the width of the electrical component box, a sub-pillar should be provided between the column and the column, and the electrical component box should be supported by one column and the sub-pillar. Therefore, it can cope with a large case.

The external appearance perspective view which shows the outdoor unit of the air conditioner by this invention. The external appearance perspective view which shows the state which removed the front panel of the outdoor unit. Sectional drawing seen focusing on the ventilation fan of an outdoor unit. The external appearance perspective view which shows the state which removed the front panel of the outdoor unit and rotated the electrical component box. The principal part perspective view which shows the state which removed the transformer unit from the electrical component box of FIG. The principal part perspective view which looked at the transformer unit shown in FIG. 5 from the A direction. The principal part side view seen centering on the electrical component box and transformer unit of an outdoor unit. The partial expanded side view which looked at FIG. 4 centering on the transformer unit from A direction. The partial expanded sectional view which shows the state which attached the electrical component box to the sub pillar. (A) The front view of the outdoor unit of the conventional air conditioner, (b) The front view of the outdoor unit of the conventional air conditioner.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. Drawing 1 thru / or Drawing 10 are figures explaining outdoor unit 1 of the air harmony machine in this embodiment.

  The outdoor unit 1 of the air conditioner according to the present embodiment is installed on a rooftop of a building, a commercial facility, or the like, and is used for a multi-type air conditioner for buildings that is connected to a plurality of indoor units via refrigerant piping. The outdoor unit 1 of the air conditioner according to the present embodiment will be described by taking the large-scale outdoor unit 1 as an example, which sucks air from the suction port 20 on the side surface and exchanges heat with the refrigerant and then blows out from the top surface outlet 13.

  As shown in FIGS. 1 to 3, the outdoor unit 1 of the air conditioner includes a housing 10 and an outdoor refrigerant circuit 3 housed inside the housing 10. The casing 10 has a substantially rectangular parallelepiped shape that is larger than the standard type and is vertically long, and has a quadrangular base 11 and pillars that stand upright at the corners of the base 11 or in the vicinity of the corners and extend vertically from the upper end to the lower end. 12a to 12d, a top plate 14 having an outlet 13 fixed to the upper ends of the columns 12a to 12d, a connecting plate 15 for connecting the columns 12a and 12d on the front side, and the upper ends of the columns 12a to 12d. It consists of four connecting panels 16 to be connected. A base leg 11 a for fixing the housing 10 to the installation place is installed on the lower surface of the base 11. These are formed by pressing a steel plate material.

  In the following, the side with the front panel 17 in FIG. 1 is the front side, the side with the columns 12a and 12b is the left side when viewed from the front, the side with the columns 12c and 12d is the right side, and the column 12b and column The side with 12c will be described as the back surface, and the side with the top plate 14 will be described as the top surface.

  The base 11 is further provided with a sub-pillar 12e for attaching the electrical component box 4. The sub pillar 12e is made of a metal U-shaped frame, and is erected substantially vertically from the front side of the base 11 (the right end side in FIG. 3). The upper end of the sub pillar 12e is fixed to the upper connecting plate 15 (15b). In this embodiment, the sub-pillar 12e is disposed at the center right side of the side of the front surface of the base 11 (front side in FIG. 4).

  As shown in FIG. 9, a reinforcing plate that supports the second fixed piece 44 provided on the right side of the electrical component box 4 on the side surface (the left side surface in FIG. 9) of the sub pillar 12 e that faces the electrical component box 4. 12f is provided. The reinforcing plate 12f is an angle steel material having an L-shaped cross section, and one piece 12f1 is disposed and screwed along the side surface of the sub pillar 12e, and the other piece 12f2 is separated from the sub pillar 12e. It protrudes toward (the direction of the electrical component box 4).

  The connecting plate 15 includes a lower connecting plate 15a positioned at the center in the height direction of each of the columns 12a (first column) and columns 12d (second column), and substantially the upper ends of the first column 12a and the second column 12d. And the upper connecting plate 15b positioned at the same position, and are arranged so as to be parallel to each other. The upper connecting plate 15b is provided with a plurality of screw holes at predetermined intervals for screwing first fixing pieces 41 of the electrical component box 4 to be described later.

  As shown in FIG. 2, the lower connecting plate 15a and the sub pillar 12e are fixed by screws, and a cantilever hinge 26 for rotatably supporting the electrical component box 4 is provided at the connecting portion. It has been.

  Similarly, the upper connecting plate 15b and the sub pillar 12e are fixed by screws, and a cantilever hinge 25 for rotatably supporting the electrical component box 4 is provided at the connecting portion.

  According to this, by connecting the hinges 25 and 26 to the bearing holes 27 provided on the right side surface of the electrical component box 4, the electrical component box 4 is rotatably supported with the left side surface as the free end side. Is done. By rotating the electrical component box 4 and pulling it out of the housing 10, the components of the outdoor refrigerant circuit 3 arranged on the back side of the electrical component box 4 in the housing 10 can be maintained.

  A front panel 17 that covers the front surface side is attached between the front column 12a and the column 12d. The front panel 17 includes an upper front panel 17a disposed below the connection panel 16 and a lower front panel 17b disposed below the upper front panel 17a. The front panel 17 is attached to and detached from the column 12a and column 12d with screws. It can be freely attached and removed during installation or maintenance as shown in FIG.

  The air outlet 13 having an opening at the center of the top plate 14 is covered with a fan guard 18. As shown in FIG. 3, a blower fan 19 and a bell mouth (not shown) surrounding the blower fan 19 are disposed inside the blower outlet 13. The blower fan 19 is rotationally driven by a fan motor 23 installed on a motor support base 22 fixed to the connection panel 16. Moreover, the suction inlet 20 is formed between the support | pillar 12a and the support | pillar 12b, the support | pillar 12b and the support | pillar 12c, and the support | pillar 12c and the support | pillar 12d, respectively.

  As shown in FIG. 2, when the front panel 17 is removed at the time of installation or maintenance of the outdoor unit of the air conditioner, the outdoor refrigerant circuit 3, the electrical component box 4, and the connecting plate 15 are inside the housing 10. appear.

  The outdoor refrigerant circuit 3 includes a heat exchanger 31, a compressor (not shown), a compressor accumulator (not shown), an oil tank (not shown), a receiver tank (not shown), an accumulator 32, an operation valve 33, and the like. And refrigerant pipes (not shown) for connecting these components.

  The heat exchanger 31 is provided in a U-shape on the base 11 along the three inlets 20 on the back and left and right sides. The compressor and the accumulator for the compressor are formed as a compressor chamber 35 in a space formed by bending a steel plate material on the front side in the housing 10, and are arranged inside the compressor chamber 35.

  With the above configuration, the air passage 24 connecting the air inlet 20 and the air outlet 13 is formed, and the air sucked from the three air inlets 20 of the housing 10 by the rotation of the air blowing fan 19 passes through the air passage 24. Heat exchange with the refrigerant is performed by the heat exchanger 31, and the air is guided to the upper part by the bell mouth of the housing 10 and the blower fan 19 and blown out from the blowout port 13.

  The electrical component box 4 is disposed so that the front side faces the back side of the front panel 17 (more specifically, the upper front panel 17a) and the back side faces the air passage 24, and is exposed to air passing through the air passage 24. It is supposed to be.

  As shown in FIGS. 2 and 3, the electrical component box 4 includes a box-shaped electrical component box body 40 having a front surface opened by bending a steel plate material, and an opening in the front surface of the electrical component box body 40. It consists of an electrical component box lid 41 attached so as to close. On the left side surface of the electrical component box main body 40, a handle 42 for the operator to hold the electrical component box 4 is provided.

  As shown in FIG. 5 and FIG. 6, the electrical component box body 40 has a back plate 401 composed of a back surface 401 a, a left side surface 401 b, and a right side surface 401 c, and a box shape with flanges on the lower sides from the four sides. The upper surface plate 402 covers a part thereof, and includes a left side surface 401b of the rear surface plate 401 and a side surface plate (not shown) fixed to the inner surface of the right side surface 401c to reinforce the rear surface plate 401. The electrical component box lid 41 is fixed to the bent portion at the front end of the side plate fixed to the back plate 401 with screws.

  Various electrical components for controlling the compressor, the blower fan 19 and the like are attached to the inner surface of the back plate 401 of the electrical component box body 40. A seal member (not shown) is attached to the lower end side of the electrical component box lid 41 along a bent portion (not shown) bent in an L shape, and the seal member is pulled out from the lower surface opening of the electrical component box 4. Insects such as insects and rainwater from the gaps between the cables are prevented.

  In a conventional outdoor unit of an air conditioner, there is a transformer that transforms the voltage of a commercial power source as one of large and heavy electrical components mounted inside an electrical component box. In the outdoor unit 1 of the air conditioner of the present embodiment, as shown in FIGS. 7 and 8, for example, a power supply voltage of 460 V of a commercial power supply is used as a transformer corresponding to an electrical component made of this large heavy weight. A large power transformer 72 that transforms (steps down) to a voltage of 230 V and has a weight of, for example, 5.5 kg is used.

  However, as in the case of a conventional outdoor unit of an air conditioner, when the electrical component box 4 having a large power transformer 72 mounted therein is disposed in the housing 10, the total weight of the electrical component box 4 increases and the electrical component The mounting work of the box 4 becomes difficult.

  Therefore, in the outdoor unit 1 of the air conditioner of the present embodiment, when the electrical component box 4 and the large power transformer 72 are arranged in the housing 10, the electrical component box 4 and the large power transformer 72 are separately attached. It can be configured.

  As shown in FIGS. 3 to 6, the electrical component box body 40 has a transformer unit 7 in which a power transformer 72 is mounted on a back plate 401 of the electrical component box body 40. On the back plate 401 of the electrical component box body 40, a pair of left and right vertically fixed back fixtures 6 for fixing the transformer unit 7 are fixed.

  The back fixture 6 is fixed to the back plate 401 of the electrical component box main body 40 at a position where the heat sink 5 for cooling the heat generating components among the electrical components is not disposed. As shown in FIGS. 3 and 4, the back fixture 6 and the transformer unit 7 are located above the compressor chamber 35 and in front of the heat exchanger 31 and the accumulator 32 of the outdoor refrigerant circuit 3, Only has a cable (not shown) for connecting the compressor, the operation valve 33, the fan motor 23 and the electrical components in the electrical component box 4, and the arrangement of components such as the heat exchanger 31 and the compressor is affected. Never give.

  However, since the back fixture 6 and the transformer unit 7 are disposed in the air passage 24 connecting the suction port 20 and the air outlet 13 and rainwater may enter the air passage 24 from the air outlet 13 on the ceiling, the electrical component It is necessary to take rainwater countermeasures for the back plate 401 and the transformer unit 7 of the box body 40.

  As shown in FIGS. 5 and 6, the back fixture 6 is provided with a back plate 401 of the electrical component box body 40 in order to prevent rainwater from entering the electrical component box 4 from the back plate 401 of the electrical component box body 40. Without being provided with a mounting hole, it is welded to the back plate 401 of the electrical component box body 40 by spot welding.

  The rear fixture 6 is provided with a first mounting hole 61 and a second mounting hole 62 for mounting the transformer unit 7. The first attachment hole 61 is a vertically long, vertically-arranged through hole arranged along the extending direction of the back fixture 6, and a part of the first attachment hole 61 is notched in the width direction. The left fixed piece 71a is hooked.

  The second mounting hole 62 is a vertically long through hole disposed along the extending direction of the back fixture 6, and the right fixing piece 71 b provided in the transformer unit 7 is inserted therein. ing. The first mounting holes 61 and the second mounting holes 62 are alternately arranged along the extending direction of the back fixture 6, and are further arranged so that they are staggered between the left and right back fixtures 6 and 6. ing. As a result, the back fixture 6 having the same structure can be inverted upside down and fixed for the left side and the right side.

  As shown in FIG. 6, the upper surface plate 401 of the electrical component box body 40 is provided with a first fixed piece 43 (first fixed portion) for fixing the electrical component box 4 to the housing 1 with screws. . The first fixed piece 43 is a flange-like metal plate that is erected substantially vertically from the front side of the electrical component box 40, and a screw insertion hole 431 for screwing is provided in a part of the first fixed piece 43. The upper end of the electrical component box 4 is fixed to the housing 10 by screwing the first fixing piece 43 into a screwing hole (not shown) provided in the upper connecting plate 15b.

  Referring to FIG. 5 again, the side plate 404 on the right side of the electrical component box body 40 is provided with a second fixing piece 45 (second fixed portion) for fixing the electrical component box 4 to the support column 12a. ing. The second fixed piece 45 is made of an L-shaped metal plate, and one first fixed piece member 451 is fixed to the side plate 404 of the electrical component box 40 by spot welding.

  The other second fixed piece member 452 protrudes from the side plate 404 so as to be parallel to the front surface of the first support column 12a, and is disposed so as to be substantially flush with the back plate 401. . The fixing piece 452 is provided with a plurality of screw holes 453 for screwing.

  According to this, by closing the electrical component box 4, the second fixed piece member 452 of the second fixed piece 45 abuts along a part of the front surface of the first support column 12 a and is fixed with screws in that state. Thus, the left side surface of the electrical component box 4 can be firmly fixed to the first support column 12a.

  A third fixing piece 44 (third fixing portion) for screwing the electric component box 40 to the reinforcing piece 12f of the sub pillar 12e is provided on the side plate 403 on the left side (hinge 25, 26 side) of the electric component box body 40. ) Is provided. The third fixed piece 44 is formed by bending a single metal plate into a W shape, and is in contact with the first abutting piece 441 facing the side plate 403 and the reinforcing plate 12 f of the housing 10. Two abutting pieces 442 are formed at both ends.

  The third fixed piece 44 is integrally attached by spot welding in a state where the first abutting piece 441 is abutted along the side plate 403 of the electrical component box body 40. The second abutting piece 442 is provided with a plurality of screwing holes 444 for screwing.

  According to this, as shown in FIG. 9, the second abutting piece 442 of the third fixed piece 44 abuts in parallel with the reinforcing plate 12f by closing the electrical component box 4. By screwing the third fixing piece 44 together with the reinforcing plate 12f in this state, the right side surface of the electrical component box 4 can be fixed to the sub pillar 12e.

  On the other hand, as shown in FIGS. 6 and 7, the transformer unit 7 has a structure that covers the large-sized power transformer 72 in order to prevent rainwater from entering the transformer unit 7.

  The transformer unit 7 is fixed to the base plate 71 made of a substantially square metal plate fixed to the left and right rear fixtures 6, a large power transformer 72 fixed to the base plate 71, and the base plate 71. It consists of a box-shaped sheet metal cover 73 that covers a large power transformer 72. In the present invention, the specific configuration and mounting method of the transformer unit 7 may be arbitrary, and the description thereof is omitted.

  Next, attachment of the assembled transformer unit 7 to the back surface fixing tool 6 will be described. As shown in FIG. 4, the transformer unit 7 is attached to the rear fixture 6 by first rotating the electrical component box 4 to the front side of the housing 10 and being fixed to the rear plate 401 of the electrical component box body 40. Make the back fixture 6 visible.

  Thereafter, with the transformer unit 7 placed on the floor surface or the like lifted by hand, the left fixing piece 71a of the base plate 71 is moved to the lower end of the inverted L-shaped hole 61 formed on the back surface of the left back fixing tool 6. Hook onto and fit.

  In this state, since the transformer unit 7 is cantilevered to the left rear fixture 6, the right fixed piece 71 b of the base plate 71 can be obtained by rotating the transformer unit 7 toward the right rear fixture 6. Is fitted into a vertically long rectangular hole 62 formed on the back surface of the right-side back fixture 6.

  Next, the transformer unit 7 is fixed to the back of the electrical component box 4 by attaching the base plate 71 to the left and right back fixtures 6 with screws (not shown).

  Next, as shown in FIG. 2, the transformer unit 7 attached to the back fixture 6 rotates the electrical component box 4 to the rear side of the housing 10, and the electrical component box 4 is moved to the first of the housing 10. When fixed to the column 12a and the sub pillar 12e with screws (not shown), the lower flange 71e of the base plate 71 is in contact with and supported by the connecting plate 15 of the housing 10 as shown in FIG. The load of the transformer unit 7 can be received by the connecting plate 15, and the fixing state of the electrical component box 4 to the column 12 a and column 12 e of the housing 10 can be reinforced.

  In this embodiment, a large base 11 is used for the housing 10, and a sub-pillar 12e is provided and reinforced, and the electrical component box 4 is screwed thereto, but the electrical component box 4 of the present invention is It can also be applied to a case using a standard type base. In that case, the right side surface of the electrical component box 4 is directly fixed to the second support column 12b instead of the sub pillar 12e. Such an embodiment is also included in the present invention.

  As described above, according to the present invention, by providing a fixing portion on each of the upper surface and the left and right side surfaces of the electrical component box, and fixing the electrical component box to the housing via each fixed portion, the weight Even if a heavy electrical component box is attached to the housing, the housing can be prevented from being damaged during transportation or maintenance. In addition, when using a large base where the interval between the columns is larger than the width of the electrical component box, a sub pillar is provided between the column and the column, and the electrical component box is supported by one column and the sub pillar. Therefore, it is possible to cope with a large casing.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 10 Case 11 Base 11a Base leg 12a-12d Post 12e Sub pillar 12f Reinforcement plate 13 Outlet 14 Top plate 15 Connection plate 16 Connection panel 17 Front panel 17a Upper front panel 17b Lower front panel 18 Fan guard 19 Blower fan 20 Suction port 22 Motor support base 23 Fan motor 24 Air flow path 25, 26 Cantilever hinge 3 Outdoor refrigerant circuit 31 Heat exchanger 32 Accumulator 33 Operation valve 35 Compressor room 4 Electrical component box 40 Electrical component box body 401 Back plate 402 Upper Face plate 403 Side plate 404 Side plate 41 Electrical component box lid 42 Handle 43 First fixing piece (first fixing portion)
44 3rd fixed piece (3rd fixed part)
45 Second fixing piece (second fixing part)
5 heat sink 6 back fixture 61 first mounting hole 62 second mounting hole 7 transformer unit 71 base plate 71a left fixed piece 71b right fixed piece 72 transformer 73 cover

Claims (1)

In an outdoor unit of an air conditioner in which a rectangular parallelepiped electrical component box is arranged along one side surface of a box-shaped housing,
The casing has first and second support columns standing along the one side surface, and is spanned between the first and second support columns so as to be parallel to each other vertically. A first and a second connecting plate, and a sub-pillar erected in parallel with the first and second support columns;
The upper surface of the electrical component box is provided with a first fixing portion for fixing the electrical component box to the first connecting plate, and on the side surface of the electrical component box facing the first support column, A second fixing part for fixing the electrical component box to the first support column or the second support column is provided, and a side surface of the electrical component box facing the sub pillar is provided on the sub pillar. An outdoor unit for an air conditioner, comprising: a hinge portion that rotatably supports the box; and a third fixing portion for fixing the electrical component box to the sub-pillar.

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