JP6292402B2 - 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 surface of a housing after sucking air from the side and exchanging heat with a refrigerant in a heat exchanger. This outdoor unit that blows out 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. Are equipped with 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 is disposed on the blower outlet side of the housing to blow out the air heat-exchanged with the refrigerant through the suction heat exchanger from the suction outlet.

  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.

  Therefore, it is conceivable to attach the electrical component box and the large transformer separately to the housing. However, the large transformer also radiates heat generated in the same way as the electrical component box. It is necessary to arrange in the road, and rainwater countermeasures are required.

  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. Before and after mounting on the back of the electrical component box, measures against rainwater are also required on the back of the electrical component box so that rainwater does not enter the interior of the electrical component box.

JP 2009-180388 A

  Therefore, in view of the above problems, the present invention can easily attach the electrical component box to the outdoor unit and attach the electrical component box and the large transformer to the outdoor unit when a large transformer is attached to the outdoor unit. It is an object of the present invention to provide an outdoor unit of a top blowing type air conditioner that is not affected by rainwater later.

In order to solve the above-described problems, the present invention provides an outdoor unit for an air conditioner in which an electrical component box is disposed along one side surface of a box-shaped housing, separately from the electrical component box. A transformer unit that is provided on a back plate of the electrical component box and houses a transformer therein, and the transformer unit is mounted on the back plate of the electrical component box through a predetermined locking member on which the transformer is placed. A base plate to be supported; and a cover attached to the base plate so as to cover the transformer. The cover includes a square front plate including a square, and an upper side, a lower side, a right side, and a left side of the front plate. It includes an upper plate, a lower plate, a right side plate, and a left side plate that are bent substantially at right angles in the same direction from each side of the side, and is configured by a single metal plate having an opening on one surface facing the front plate. Box A first flap bent along the outer surface of the right side plate is formed on the right side of the upper surface plate, and a second flap bent along the outer surface of the left side plate is formed on the left side of the upper surface plate. A flap is formed,
A third flap that is bent along the inner surface of the right side plate is formed on the right side of the lower surface plate, and a fourth flap that is bent along the inner surface of the left side plate is formed on the left side of the lower surface plate. It is characterized by being.

  As a more preferred embodiment, a flange that is in parallel with the base plate is formed at each end of the top plate, the bottom plate, the right side plate, and the left side plate that forms the opening, Each of the flanges is preferably screwed to the base plate through a sealing member for water shielding.

  According to the present invention, by forming a cover by folding a single metal plate into a box shape, the upward seam formed between the end portions of the cover and the side plates facing each other is By covering with the first and second flaps, rainwater can be prevented from entering the cover from the upward seam. Further, the third and fourth flaps are bent along the inner side surface of each side plate, thereby providing a water intrusion path from the downward seam formed between the lower surface plate and each side plate to the inside of the cover. It can be taken for a long time and rain entry can be prevented more reliably.

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. FIG. 6 is an exploded perspective view showing the transformer unit shown in FIG. 5. The disassembled perspective view which shows the state which fixed the transformer to the fixing tool shown in FIG. The disassembled perspective view which shows the state which fixed the cover to the fixing tool shown in FIG. 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 expanded view of the cover of the said transformer unit. The perspective view which looked at the above-mentioned cover from the front side. The perspective view which looked at the said cover from the back side. The perspective view which shows typically an example of the assembly procedure of the said cover.

  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 housing 10 has a large, vertically long, substantially rectangular parallelepiped shape, a quadrangular base 11, and support columns 12a to 12e that are disposed at or near the four corners of the base 11 and extend vertically from the upper end to the lower end, The top plate 14 provided with the outlet 13 fixed to the upper ends of the columns 12a to 12e, the connecting plate 15 that connects the columns 12a and 12d on the front side, and the four plates that connect the upper ends of the columns 12a to 12e. It consists of a connection panel 16. 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.

  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.

  In FIG. 1, the side with the front panel 17 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 The description will be made assuming that the side with the support column 12c is the back surface and the side with the top plate 14 is the top surface.

  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.

  The electrical component box 4 is rotatably supported by cantilevered hinges 25 and 26 at the upper right side of the electrical component box body 40 at the connection panel 16 and at the lower right side at the connection plate 15 respectively. As shown in FIG. 4, it opens and closes like a hinged door. Thereby, each component of the outdoor side refrigerant circuit 3 arrange | positioned in the back | inner side of the electrical component box 4 in the housing | casing 10 becomes maintainable.

  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 arranged in the housing 10, the total weight of the electrical component box 4 becomes very heavy. This makes it difficult to mount the electrical component box 4.

  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 back fixture 6 includes a back surface 65, a left side surface 66, a right side surface 67, a left flange 61 bent from the left side surface 66 along the back surface of the back plate 401 of the electrical component box body 40, and an electrical component from the right side surface 67. The right flange 62 is bent along the back surface of the back plate 401 of the product box body 40. Although the back fixture 6 has the same shape, for the sake of convenience of explanation, the left back fixture is distinguished by reference numeral 6A, and the right back fixture is distinguished by reference numeral 6B.

  In order to attach the transformer unit 7, the back surface 65 of the back surface fixing tool 6 is formed with at least an inverted L-shaped hole 63 along the left side in the back surface 65 of the left back surface fixing tool 6A. A vertically long rectangular hole 64 is formed along the right side of the back surface 65 of the back fixture 6B.

  The back surface fixing tool 6 in the present embodiment is provided on the back surface of the back plate 401 of the electrical component box body 40 so that the back surface fixing device 6 having the same structure can be turned upside down and fixed for the left side and the right side. Two reverse L-shaped holes 63 and two vertically long rectangular holes 64 are alternately formed on the rear surface 65 of the back surface 65. The back fixture 6 is provided with a pair of left and right vertically-shaped back fixtures 6, but may be provided with a pair of top and bottom horizontally-shaped back fixtures.

  Since the left flange 61 and the right flange 62 of the back fixture 6 described above are welded to the back surface of the back plate 401 of the electrical component box body 40 by spot welding, they are attached to the back plate 401 of the electrical component box body 40. When attaching the back fixture 6, it is not necessary to make a mounting hole for attaching to the back plate 401 of the electrical component box body 40 with screws, so that rainwater enters the electrical component box 4 from the back plate 401 of the electrical component box body 40. Intrusion can be prevented.

  Further, when the transformer unit 7 is attached, the back surface fixing tool 6 is a screw tip of a transformer mounting screw 74 that protrudes from the transformer unit 7 or a transformer unit mounting screw 75 that attaches the transformer unit 7 to the back surface fixing tool 6. However, it is formed in a trapezoidal cross section so that there is a gap S between the back of the back plate 401 of the electrical component box body 40 and the back of the back plate 401 of the electrical component box body 40 so as not to hit the back of the back plate 401 of the electrical component box body 40. ing.

  On the other hand, as shown in FIGS. 6 and 7, the transformer unit 7 has a structure that covers and seals the large-sized power transformer 72 in order to prevent rainwater from entering the transformer unit 7. Further, since the large power transformer 72 is heavy, the transformer unit 7 is strong enough to withstand the weight of the large power transformer 72, and the total weight of the transformer unit 7 is not increased. The work is made easy.

  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 this embodiment, a power transformer 72 having an outer dimension that can be accommodated in the cover 73 and smaller than the base plate 71 is used. Further, the plate thickness of the cover 73 is, for example, 0.8 mm, and the plate thickness of the base plate 71 is, for example, 1.6 mm.

  As shown in FIGS. 6 to 9, the base plate 71 has a flat mounting portion 71f on the center of which the power transformer 72 is mounted, and the upper end (right side in FIG. 7) has the transformer unit 7 at its upper end. A grip plate 71d that is gripped by a hand when attached is integrally provided. In the following description, among the four sides of the substantially square mounting portion 71f, the left side reference code is 71f1, the right side reference code is 71f2, the upper side reference code is 71f3, and the lower side reference code is 71f4.

  The mounting portion 71 f is formed so that its area is larger than the area covered by the cover 73. According to this, the mounting portion 71 f includes the covering portion 71 j that is covered by the cover 73 and the exposed portion 71 k that is not covered by the cover 73. In this embodiment, the exposed portion 71k is formed so as to surround the outer periphery of the covering portion 71j.

  The grip plate 71d is integrally extended from the upper side 71f3 of the placement portion 71f, and is bent so as to be substantially perpendicular to the surface side (transformer placement surface side) of the placement portion 71f. In the center of the grip plate 71d, a grip hole 71h for gripping by hand is formed. In this embodiment, the grip hole 71h is formed in an elliptical shape so that it can be easily gripped by hand.

  At the lower end of the base plate 71 (left side in FIG. 7), when the electrical component box 4 is attached to the housing 10, a part of the load of the transformer unit 7 is supported and the transformer unit 7 interferes with a part of the housing 10. A guide plate 71e is provided for smooth guidance so as not to occur.

  The guide plate 71e extends integrally along the lower side 71f4 of the base plate 71, and is bent substantially at a right angle with respect to the surface side (transformer mounting surface side) of the mounting portion 71f. A tapered portion 71i that is inclined further inward (upper side 711c side) than the guide plate 71e is provided on the distal end side of the guide plate 71e.

  According to this, as shown in FIG. 10, the guide plate 71e of the base plate 71 is brought into contact with the connecting plate 15 of the housing 10 in an elastic state by the formation of the tapered portion 71i, so that the electrical component box 4 A part of the load of the transformer unit 7 can be received by the connecting plate 15.

  The base plate 71 includes a pair of inverted L-shaped left fixing pieces 71a bent from the left side 71f2 to the front side, and a pair of vertically long rectangular right fixing pieces bent from the right side 71f1 to the front side (back side in FIG. 7). 71b (see FIG. 6) and a right flange 71c bent from the right side 71f1 to the back side (upper side in FIG. 7).

  As shown in FIG. 5, the left fixing piece 71 a is engaged with the inverted L-shaped hole 63 of the back fixture 6 installed on the right side of the back of the electrical component box body 40. Further, as shown in FIG. 6, the right fixing piece 71 b is locked in a vertically long rectangular hole 64 of the back fixture 6 installed on the left side of the back of the electrical component box body 40.

  Since the grip part 71d, the guide plate 71e, and the right flange 71c are formed on the base plate 71 by bending along the sides 71f1, 71f3, 71f4 of the placement part 71f, the base plate 71 is provided with the placement part. It also serves as a reinforcing plate for reinforcing the load-bearing strength to withstand the weight of the power transformer 72 fixed to 71f.

  As shown in FIG. 7, the base plate 71 is engaged with the mounting portion 71 f of the large-sized power transformer 72 with the corners 72 b on both sides of one side of the base 72 a of the large-sized power transformer 72. The notch pocket 71g for positioning 72 is added to two places, and four dowels 71l to 71o are further provided.

  The notch pocket 71g is a locking part formed by notching and causing a part of the base plate 71, and by inserting the corner 72b of the base 72a of the power transformer 72 into the notch pocket 71g, The transformer 72 can be easily positioned.

  The dowels 71l to 71o are composed of four convex portions protruding from the mounting portion 71f of the base plate 71. When these convex portions attach the power transformer 72 to the base plate 71, the peripheral edge of the base 72a of the power transformer 72 The four cutouts 72a1 to 72a4 provided in the are matched. According to this, the power transformer 72 can be easily positioned by aligning the notches 72a1 to 72a4 with the dowels 71l to 71o. By this positioning, the position of the screw hole provided in the base plate 71 matches the position of the screw hole on the power transformer 72 side, and both can be screwed.

  The right flange 71c and the guide plate 71e of the base plate 71 also serve as positioning means for positioning the cover 73 by bringing a right flange 73b (described later) of the cover 73 into contact with a lower flange 73d.

  That is, by bringing the tip of the right flange 73b of the cover 73 into contact with the inner surface of the right flange 71c of the base plate 71 and further bringing the tip of the lower flange 73d of the cover 73 into contact with the inner surface of the guide plate 71e. The relative positioning of the base plate 71 and the cover 73 can be easily performed.

  Next, as shown in FIG. 12, the cover 73 is made of one metal plate cut out by punching, and includes a rectangular front plate 73e and an upper surface plate 73h formed on the upper side 73e1 of the front plate 73e. A lower surface plate 73i formed on the lower side 73e2 of the front plate 73e, a left side plate 73f formed on the left side 73e3 of the front plate 73e, and a right side plate 73g formed on the right side 73e4 of the front plate 73e. ing.

  The upper surface plate 73h is provided with a first flap 73j formed on the left side 73h1 of the upper surface plate 73h and a second flap 73k formed on the right side 73h2. Further, the lower surface plate 73i is provided with a third flap 73l formed on the left side 73i1 of the lower surface plate 73i and a fourth flap 73m formed on the right side 73i2.

  Each of the first to fourth flaps 73j to 73m is formed such that the length in the longitudinal direction is shorter than the length of each side 73h1, 73h2, 73i1, and 73i2, and the adjacent left side plate 73f and right side plate 73g abut against each other. A predetermined gap G is formed between the two portions.

  In forming the gap G, it is necessary to provide a certain width in relation to the strength and durability of the punching die. Therefore, in this embodiment, it is preferable that the width of the gap G is at least larger than the plate thickness (0.8 mm) of the cover 73.

  An upper flange 73c that is bent so as to be parallel to the mounting portion 71f is provided at the tip (upper end in FIG. 12) of the upper surface plate 73h. A lower flange 73d that is bent so as to be parallel to the placement portion 71f is provided at the front end (lower end in FIG. 12) of the lower surface plate 73i. A left flange 73a that is bent so as to be parallel to the placement portion 71f is provided at the tip of the left side plate 73f (left end in FIG. 12). A right flange 73b is provided at the front end (right end in FIG. 12) of the right side plate 73g and is bent so as to be parallel to the placement portion 71f.

  The flanges 73a to 73d are bent substantially perpendicularly toward the outside with respect to each of the left side plate 73f, the right side plate 73g, the upper surface plate 73h, and the lower surface plate 73i. A sealing material S is applied to the entire surface of the surface of each flange 73a to 73d facing the mounting portion 71f (the front side in FIG. 12). Furthermore, the sealing material S is also provided on the surfaces of the flaps 73j to 73m facing the left side plate 73f and the right side plate 73g.

  The upper flange 73c is provided with two screw insertion holes 73c1 and 73c2 through which fixing screws 75 for fixing the cover 73 to the base plate 71 are inserted. Similarly, screw insertion holes 73d1 and 73d1 through which the fixing screws 75 are inserted are also provided in two places in the lower flange 73d. In this embodiment, the screw insertion holes 76a to 76d are provided only at two locations of the upper flange 73c and the lower flange 73d, but may also be provided at the right flange 73a and the left flange 73b.

  As the sealing material S, a pressure-bonding type sealing material is preferably used that presses the flanges 73a to 73d to the mounting portion 71f so that the sealing material S is crushed to close the gap and prevent water from entering.

  Next, an example of the assembly procedure of the cover 7 from the unfolded state shown in FIG. 12 will be described. First, the first flap 73j and the second flap 73k are valley-folded along the left and right sides 73h1 and 73h2 of the upper surface plate 73h to a position that is substantially perpendicular to the front plate 73e. Further, the third flap 731 and the fourth flap 73m are valley-folded along the left and right sides 73i1 and 73i2 of the bottom panel 73i to a position that is substantially perpendicular to the front plate 73e.

  Next, the left side plate 73f is valley-folded along the left side 73e3 of the front plate 73e so as to be substantially perpendicular to the front plate 73e. Similarly, the right side plate 73g is valley-folded along the right side 73e4 of the front plate 73e so as to be substantially perpendicular to the front plate 73e.

  Next, as shown in FIG. 15, the upper surface plate 73h is valley-folded along the upper side 73e1 so as to be substantially perpendicular to the front plate 73e. At that time, the first flap 73j is folded so as to be in close contact with the outer side surface of the left side plate 73f, and the second flap 73k is folded so as to be in close contact with the outer side surface of the right side plate 73g.

  According to this, by covering the seam formed between the end portions of the upper surface plate 73h and the left and right side plates 73f, 73g facing each other with the first flap 73j and the second flap 73k, rainwater Intrusion into the inside of the cover 73 from the joint portion can be prevented.

  Next, the lower panel 73i is valley-folded along the lower side 73e2 so as to be substantially perpendicular to the front plate 73e. At that time, the third flap 73l is folded so as to be in close contact with the inner side surface of the left side plate 73f, and the fourth flap 73m is folded so as to be in close contact with the inner side surface of the right side plate 73g.

  According to this, the third flap 731 and the fourth flap 73m are folded inside the side plates 73f and 73g, so that the bottom panel 73i and the left and right side plates 73f and 73g are disposed between the end portions facing each other. The formed seam faces downward, making it difficult for rainwater to enter from the seam. Moreover, since the infiltration path from the joint to the inside of the cover 73 is long, a structure in which water is less likely to enter is obtained.

  Further, a slight seam gap is formed at the corners of the four corners of the front plate 73e by the gap G formed in the vicinity of each of the flaps 73j to 73m. Since it is very small, it can be waterproofed by sticking the sealing material S from the inside of the cover 73.

  Next, assembly of the transformer unit 7 configured as described above will be described. As shown in FIGS. 7 to 9, the transformer unit 7 is assembled by placing the base plate 71 on a flat surface such as a floor so that the left fixed piece 71a and the right fixed piece 71b of the base plate 71 are on the lower side. Put.

  Thereafter, the corner 72b of the base 72a of the power transformer 72 is engaged with the cutout pocket 71g of the base plate 71, the power transformer 72 is positioned on the base plate 71, and the power transformer 72 is screwed (not shown) with the base plate 71. Install to.

  Next, the power transformer 72 is covered with the cover 73, the right flange 73b and the lower flange 73d of the cover 73 are brought into contact with the right flange 71c and the guide plate 71e of the base plate 71, and the cover 73 is positioned on the base plate 71. The base plate 71 is attached to the mounting portion 71f with screws (not shown).

  At this time, for example, the upper flange 73c of the cover 73 with the seal member sandwiched between the left flange 73a, the right flange 73b, the upper flange 73c and the lower flange 73d of the cover 73 and the mounting portion 71f of the base plate 71. The lower flange 73d is screwed to the mounting portion 71f of the base plate 71.

  In the assembled transformer unit 7, since the lower flange 73d of the cover 73 is screwed to the mounting portion 71f of the base plate 71, the bottom surface of the cover 73 is located away from the guide plate 71e of the base plate 71, The cover 73 does not interfere when the guide plate 71e of the base plate 71 is brought into contact with the connecting plate 15 of the housing 10.

  Further, since the upper flange 73c of the cover 73 is screwed to the mounting portion 71f of the base plate 71, the top surface of the cover 73 is located away from the upper flange 71d of the base plate 71, and the cover 73 is connected to the grip plate. It does not hinder the user from placing a hand on the 71d handle hole 71h. The cable 72c connected to the power transformer 72 is drawn out in a state of being in close contact with the sealing material S from between the left side of the mounting portion 71f of the base plate 71 and the left flange 73a of the cover 73.

  Next, attachment of the transformer unit 7 to the back fixture 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. Since the transformer unit 7 is heavy and heavy, it is preferably attached after the electrical component box 4 is attached to the housing 10. However, the transformer unit 7 may be attached to the electrical component box 4 in advance and attached to the housing 10. .

  After that, as shown in FIGS. 5 and 6, the base unit 71 is fixed to the left with the transformer unit 7 placed on the floor or the like being lifted by placing the hand on the handle hole 71h of the grip plate d from below. The piece 71a is hooked and fixed to the lower end of an inverted L-shaped hole 63 formed on the back surface of the left back fixture 6.

  At this time, since the transformer unit 7 is cantilevered to the left rear fixture 6, the right fixture 71 b of the base plate 71 is moved by rotating the transformer unit 7 toward the right rear fixture 6. It can be hooked and fixed to a vertically long rectangular hole 64 formed on the back surface of the right side back fixture 6.

  Next, as shown in FIG. 11, the base plate 71 is fixed to the left and right back fixtures 6 with screws 75. At this time, exposed portions 71k not covered with the cover 73 of the base plate 71 (for example, the four corners of the mounting portion 71f of the base plate 71) are screwed to the back surfaces 65 of the left and right back fixtures 6. Is done.

  As shown in FIG. 11, the transformer unit 7 attached to the back fixture 6 has a screw 74 for attaching a large power transformer 72 and a screw 75 for attaching the transformer unit 72 fixed to the left from the base plate 71. It is in a state of protruding outward in the direction of the piece 71a and the right fixed piece 71b.

  However, the base plate 71 is attached to the left and right rear fixtures 6 formed in a trapezoidal cross section composed of the back surface 65, the left side surface 66 and the right side surface 67, with screws 74 from the back surface of the back plate 401 of the electrical component box body 40. For mounting the large-sized power transformer 72, the shaft portion 74a is mounted with a dimension of the gap S larger than the length L1 of the shaft portion 74a and the length L2 of the shaft portion 75a of the screw 75a. The screw 74 and the screw 75 for attaching the transformer unit 72 do not hit the back surface of the back plate 401 of the electrical component box body 40.

  Further, the load of the transformer unit 7 can be received by the pair of left and right rear surface fixtures 6 (6A, 6B) and distributed to the rear surface plate 401 of the electrical component box body 40, depending on the weight of the large-sized power transformer 72. The strength of the electrical component box 4 can be maintained without increasing the thickness of the electrical component box 4.

  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 attached to the column 12 a of the housing 10. When the column 12e is fixed 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. 7 can be received by the connecting plate 15, and the fixing state of the electrical component box 4 to the column 12a and column 12e of the housing 10 can be reinforced.

  As described above, according to the present invention, a cover is formed by folding a single metal plate into a box shape, so that the upper plate 73h of the cover 7 and the side plates 73f and 73g are formed between the end portions facing each other. By covering the upward seam with the first and second flaps 73j and 73k, rainwater can be prevented from entering the cover from the upward seam. Further, the third and fourth flaps 73l and 73m are bent along the inner surfaces of the side plates 73f and 73g, so that the downward seams formed between the lower plate 73i and the side plates 73f and 73g are formed. It is possible to take a long water intrusion route from the inside of the cover to the inside of the cover, and more reliably prevent rain from entering.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 10 Housing | casing 11 Base 11a Foundation leg 12a-12e Support | pillar 13 Outlet 14 Top plate 15 Connecting plate 16 Connecting panel 17 Front panel 17a Upper front panel 17b Lower front panel 18 Fan guard 19 Blower fan 20 Suction port 22 Motor support Table 23 Fan motor 24 Air passage 25, 26 Cantilever hinge 3 Outdoor refrigerant circuit 31 Heat exchanger 32 Accumulator 33 Operation valve 35 Compressor chamber 4 Electrical component box 40 Electrical component box body 401 Rear plate 402 Upper surface plate 41 Electrical component box Lid 5 Heat sink 6 Back fixture 61 Left flange 62 Right flange 63 Reverse L-shaped hole 64 Long rectangular hole 65 Back surface 66 Left side 67 Right side 7 Trans unit 71 Base plate 71a Left fixed piece 71b Right fixed piece 71c Right Flange 71d Upper flange 71e Lower flange 71f Placement part 71f1 Left side 71f2 Right side 71f3 Upper side 71f4 Lower side 71g Notch pocket 71h Hole for handle 71i Taper part 71j Cover part covered with cover 73 71k Exposed part 71l-71o Dowels 72 Power transformer 72a Pedestal 72b Corner portion 72c Cable 73 Cover 73a Left flange 73b Right flange 73c Upper flange 73d Lower flange 73e Front plate 73f Left side plate 73g Right side plate 73h Upper surface plate 73i Lower surface plate 73j First flap 73k Second flap 73l Third flap 73m Fourth flap 74, 75 Screw 74a, 75a Shaft portion S Clearance L1 Length of shaft portion 74a L2 Length of shaft portion 75a S Seal material

Claims (2)

In an outdoor unit of an air conditioner in which an electrical component box is arranged along one side surface of a box-shaped housing,
Separately from the electrical component box, the transformer unit is provided on the back plate of the electrical component box and accommodates a transformer therein. The transformer unit is mounted on the transformer via a predetermined locking member. A base plate supported by the back plate of the electrical component box, and a cover attached to the base plate so as to cover the transformer,
The cover includes a square front plate including a square, and a top plate, a bottom plate, a right side plate, and a left side plate that are bent substantially at right angles in the same direction from the upper side, the lower side, the right side, and the left side of the front plate. Comprising a box composed of a single metal plate having an opening on one surface facing the front plate,
A first flap that is bent along the outer surface of the right side plate is formed on the right side of the upper surface plate, and a second flap that is bent along the outer surface of the left side plate is formed on the left side of the upper surface plate. As well as
A third flap that is bent along the inner surface of the right side plate is formed on the right side of the lower surface plate, and a fourth flap that is bent along the inner surface of the left side plate is formed on the left side of the lower surface plate. The outdoor unit of the air conditioner characterized by being made.   At each end of the top plate, the bottom plate, the right side plate, and the left side plate that form the opening, a flange that abuts in parallel along the base plate is formed. The outdoor unit for an air conditioner according to claim 1, wherein the outdoor unit is screwed to the base plate via a sealing member for water shielding.

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