JP2009085483A - Outdoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of an outdoor unit of an air conditioner which enables the safe removal of a front cover and also increases the strength of the outdoor unit. <P>SOLUTION: A compressor, a heat exchanger, and an electric part box are contained in the outdoor unit. The front cover halved into an upper part and a lower part is attached to the front surface of the body of the outdoor unit. The front cover is formed in an L-shape in cross section extending up to the side surface, and has an elongated recess near the corner of the side surface. The recess can provide strength to the steel sheet of the front cover. Since the recess can be used as a handle, the upper front cover can be removed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to the structure of an outdoor unit of a building air conditioner having an air outlet on an upper surface.

Among air conditioners, there is a multi air conditioning type air conditioner for buildings in which a plurality of indoor units are connected to one outdoor unit. This air conditioner is generally installed on the roof of a building or in an air conditioner room, and a refrigerant circuit is provided so that refrigerant can flow between the outdoor unit and indoor units provided in each room of the building. Since one or a plurality of outdoor units are installed in parallel in a limited place according to their capabilities, there is a need for an outdoor unit that has a compact installation area and is efficient. As a solution to this, there is an outdoor unit 100 for an air conditioner of Conventional Example 1 shown in FIGS. A heat exchanger 103 having a height 4/5 of the casing 102 is bent on the bottom plate 101 in a U shape, and a suction port 104 is provided on the side surface and the back surface of the surface facing the heat exchanger 103. Are provided with a blower fan 105 and an air outlet 106, and a plurality of units can be installed in close proximity by blowing air sucked from the air inlet 104 to the upper air outlet 106. (See Patent Document 1)
In the conventional example 1, the compressor 107 is arranged at the lower part of the main body, and the electrical component box 108 is installed at the upper part of the compressor 107. On the front side of the main body, an upper front cover 109 and a lower front cover 110 are detachably provided for maintenance. When removing the upper front cover 109 and the lower front cover 110, fingers are put on the left and right end faces and pulled toward the front, but it is difficult to hold stably because there are few fingers.

  In addition to repairing compressors and electrical components, maintenance of outdoor unit units includes checking for leaks of refrigerant due to welding and seal leaks before shipment from the factory, and sensors and electromagnetics provided on the back side of the main unit during repairs. Although it is necessary to check the valve, in the case of the air conditioner 100, the back side of the main body is closed by the heat exchanger 103. However, since the electrical component box 108 is small, the parts on the back side can be checked from the side of the electrical component box 108 by removing the upper front cover 109. However, when the inverter control function is enhanced, the electrical component box As a result, the area occupied by the electrical component box on the front side of the main body increases, and the back side parts cannot be checked. Therefore, a structure in which the electrical component box itself is removed or a structure in which the interior can be maintained by sliding the electrical component box to the side is conceivable. Furthermore, the structure which opens to the side so that maintenance can be performed from the side as well as the front side is also conceivable. In that case, the front cover is L-shaped.

FIG. 10 shows a conventional example 2 in which the front cover extends to the side surface. The outdoor unit 200 of Conventional Example 2 is provided with a suction port on the back surface and a blow outlet on one of the front surfaces, and is approximately the same height as the main body 200 so as to cover a part of the front surface and the side surface on the side where the electrical component box and the compressor are located. The front cover 201 is detachably attached to perform internal maintenance. A square handle 202 is provided at the center of the front surface of the front cover 201. When attaching or detaching, the claw 204 is removed by removing the screw 203, inserting one hand into the handle 202, and pulling it forward. However, the outdoor unit 200 is a small-sized outdoor unit for home use, and the front cover 201 can be lifted lightly with one hand, and the operation of lowering from the upper part is not required. Further, since the back surface of the handle 202 has no parts, it can be deepened and can be stably held. However, in the case of the outdoor unit of a building air conditioner according to the present invention, the handle of the deep hole cannot be provided because there is an electrical component box on the back of the upper front cover as in Conventional Example 1. (See Patent Document 2)
JP 2007-147250 A JP 2007-212104 A

  In view of the above-mentioned problems of the prior art, the present invention can be easily removed by one person by providing a vertically long recess in the vicinity of the corner of the L-shaped front cover of the outdoor unit of the air conditioner, It provides a structure that also increases the strength of the steel sheet.

  In the outdoor unit of the air conditioner according to claim 1, a compressor, a heat exchanger, and an electrical component box are housed inside, and a front cover divided into an upper part and a lower part is provided on the front surface of the main body, It has an L-shaped cross-section that extends to the side surface, and the side surface is provided with a vertically long recess in the vicinity of the corner. The cover can be removed.

  In the outdoor unit of the air conditioner according to claim 2, the corner of the concave portion is inclined so that a finger pad closely contacts the front cover, and the upper front cover can be removed more safely. It becomes.

  According to the present invention configured as described above, since it can be gripped so as to sandwich the corner of the front cover of the outdoor unit of the air conditioner, the upper front cover can be easily detached by one person, and the steel plate The strength can also be increased.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a view showing a casing of an outdoor unit of an air conditioner according to the present invention, FIG. 2 is a view showing a configuration of the outdoor unit, and FIG. 3 is a state where an electrical component box of the outdoor unit is moved FIG. 4 is an explanatory view of the upper front cover of the outdoor unit, (a) is a left side view, (b) is a front view, (c) is a right side view, and (d) is A-A '. FIG. 5 is an enlarged cross-sectional view, FIG. 5 is a plan view showing a state in which the upper front cover of the outdoor unit is removed, and FIG. 6 is a detailed view of a Y portion in FIG.

  An outdoor unit 1 of an air conditioner according to the present invention is a multi-air conditioner type air conditioner for buildings in which a plurality of indoor units are connected to one outdoor unit, and is generally installed on the roof of a building or in an air conditioner room. In addition, a refrigerant circuit is provided so that the refrigerant can flow between the outdoor unit 1 and an indoor unit provided in each room of the building. Therefore, the outdoor unit 1 has a height of about 1600 mm, a depth of about 800 mm, a width of about 900 mm, and the width increases according to the capacity.

  As shown in FIG. 1 and FIG. 2, the housing 2 has a bottom plate 20 that is formed in a flat plate rectangular shape with one of the front corners cut out obliquely and provided with a rising surface around the bottom plate 20. The first support column 21a is fixed to the part cut out obliquely. Fixed to the other front surface of the bottom plate 20 is a second column 21b made of a rectangular plate standing at a position where an electrical component box 6 described later does not affect. A third support column 21c and a fourth support column 21d are fixed to the back side of the bottom plate 20, respectively. Further, a leg portion 23 is provided on the bottom surface of the bottom plate 20 and is fixed to an installation surface such as a rooftop with a nut or the like. Four upper frames 22a to 22d that connect the respective columns are mounted on the upper ends of the columns 21a to 21d. In particular, the first upper frame 22a that connects the first column 21a and the second column 21b is L-shaped. The electrical component box 6 is suspended from the first upper frame 22a. These members are made by pressing a steel plate material.

  A motor mount 40 is fixed to the upper ends of the upper frames 22a to 22d, a motor 41 is installed on the motor mount 40, and the axial fan 4 is pivotally supported on the motor 41.

  Further, a ceiling panel 42 is provided so as to cover the support columns 21a to 21d and the upper frames 22a to 22d, and a cylindrical blowing portion 43 projects from the center of the ceiling panel 42. The axial fan 4 is accommodated, and the upper end of the blowout portion 43 is covered with a fan guard 44 having a lattice shape to prevent intrusion of hands and small animals.

  On the other hand, a polygonal heat exchanger 3 is erected along the rising surface of the bottom plate 20. Along with the heat exchanger 3, the first support column 21a is provided with a suction port 30a composed of a plurality of holes for taking in air, and suction ports 30b to 30d are opened on the left and right side surfaces and the back surface. The protection net | network 31 is attached to the suction inlets 30b-30d as a guard.

  Inside the heat exchanger 3, one or a plurality of compressors 5, a compressor accumulator 51, a receiver tank 52, and a thermostat are provided in a compressor chamber 50.

  With these configurations, the air sucked from the suction ports 30 a to 30 d is heat-exchanged by the internal heat exchanger 5, and is blown out to the outside by the axial flow fan 4 from the upper blowout portion 43.

  Now, since the inside of the housing 2 is surrounded by the heat exchanger 3, the compressor chamber 52, and the electrical component box 6 on all sides, the refrigerant leakage check is performed by welding of internal members before factory shipment or leakage of seals. Alternatively, the electrical component box 6 can be moved as shown in FIG. 3 to check the sensors and the solenoid valve during repair. The electrical component box 6 has an electrical component box cover 61 screwed to the body of the electrical component box 6, and the electrical component is checked by removing this screw. An electrical component box locking member 62 at the upper end of the electrical component box 6 is suspended from the rail 24 provided on the upper frame 22a, and is slidable toward the second support column 21b. Further, since the second support column 21b requires a space for pulling out the electrical component box on the side surface, the second support column 21b is erected on the rear side of the side surface so that the electrical component box 6 does not hit.

  An upper front cover 7 and a lower front cover 8 obtained by dividing the front cover into upper and lower parts are mounted on the front surface of the housing 2. The upper front cover 7 and the lower front cover 8 have an L-shaped cross section and are attached to the first support column 21a and the second support column 21b.

  The lower front cover 8 has a shape in which a portion of a conduit plate 81 for pulling out pipes provided in the lower part is cut out, and by removing the lower front cover 8, adjustment of pipes, members behind the pipes, and a compressor Maintenance in the chamber 52 can be performed.

  As shown in FIG. 4, the upper front cover 7 has an L-shaped cross section as described above, and can hold the L-shaped corners by hand. An inclined surface 76 is provided at the corner so that the corner does not hit the palm when held.

  In addition, although a dimension is shown temporarily in order to grasp | ascertain each magnitude | size, it is not limited to this dimension. The front end of the first support column 21a on the front side has a step of about 15 mm in depth, and there are two screw holes 75 in the stepped portion 77, and is attached to the first support column 21a. On the end surface of the stepped portion 77, there are two upper and lower claws 71a that are inserted into the insertion holes 25a provided on the rising surface of the first support column 21a. On the opposite end surface, there are two upper and lower claws 71b that are inserted into the insertion holes 25b provided on the bent surface of the second support column 21b. There are two upper and lower screw holes 75 on the front surface in the vicinity of the corners, and they are attached to the electrical component box.

  The upper front cover 7 is provided with a first recess 72 on the side surface in the vicinity of the L-shaped corner. A second recess 73 is provided on the front surface. Further, a third recess 74 is provided in the vicinity of the stepped portion 77. These recesses 72 to 74 have a height of about 90% with respect to the height of the upper front cover 7 and a depth of about 10 mm. By providing the concave portions 72 to 74 at corners and ends that are easily deformed, the strength of the upper front cover 7 is increased and deformation can be prevented. Moreover, since it is as shallow as about 10 mm and substantially in the same position as the flange portion 78, it does not affect the internal electrical component box or the like.

  Each recess will be described in detail with reference to FIG. The first concave portion 72 begins to enter the inner side of about 50 mm from the corner, and the inclined surface 72a starts. The inclined surface 72a has a width of about 25 mm and a depth of about 10 mm. From there, there is a bottom surface 72b with a width of about 10 mm, and an inclined surface 72c rises with a width of about 15 mm beyond that. The inclined surface 72a has a gentle inclination longer than the other inclined surfaces so that the belly of fingers other than the thumb can sufficiently contact. Further, the flat surface 72b and the inclined surface 72c have such a width that a fingertip cannot be used.

  The second recessed portion 73 starts from the inside about 50 mm from the corner, and the inclined surface 73a starts. The inclined surface 73a has a width of about 15 mm and a depth of about 10 mm. From there, there is a bottom surface 73b with a width of about 10 mm, and an inclined surface 73c rises with a width of about 15 mm beyond that. The inclined surface 73a is shorter than the inclined surface 72a so as to be easily pressed by the belly of the thumb. Further, the flat surface 73b and the inclined surface 73c have such a width that a fingertip cannot be used. The third recess 74 is symmetrical with the second recess 73.

  When removing the upper front cover 7, as shown in FIG. 5, with the left hand, a finger other than the thumb is placed in the first recess 72, a thumb is attached to the second recess 73, and a palm is applied to the inclined surface 76 to cover the upper front cover. 7, the four screws 9 are removed from the screw holes 75. Next, while supporting the third recess 74 with the thumb of the right hand, fingers other than the thumb are held together with the stepped portion 77 that secures the minimum finger catch. The entire upper front cover is pulled forward, and the claws 71a to 71d are removed from the insertion holes 25a to 25b and lowered.

  After the upper front cover 7 is removed, the electrical component box lid 61 can be opened to check the electrical components. In addition, the electrical component box 6 can be slid leftward to check a member disposed behind the electrical component box 6.

  When the upper front cover 7 is attached, the first concave portion 72 and the second concave portion 73 are held with the left hand, the third concave portion 74 and the stepped portion 77 are held, and temporarily placed on the lower front cover 8, and the claws 71a˜ By inserting 71d into the insertion holes 25a to 25b and screwing the screws 9 into the screw holes 75, they can be fixed to the first support column 21a and the second support column 21b.

  In these operations, a finger is held between the recesses 72 to 74 so as to be easier to hold than when there is nothing, and a large outdoor unit can be operated alone. Further, since the recesses 72 to 74 are vertically long, the ease of holding the door does not change even if the height position of the housing installation location is changed.

  Note that the upper front cover 7 can be held even when only the first recess 72 is provided in the upper front cover 7 and the second recess 73 and the third recess 74 are not provided as shown in FIG.

  Furthermore, the same effect can be acquired by providing the same recessed part also in the said lower front cover 8. FIG.

  As a second embodiment, as shown in FIG. 8, there is a structure in which one or a plurality of convex portions 79 are provided between the longitudinal directions of the concave portions 72 to 74 to increase the vertical finger hooking. When the upper front cover 7 is further increased in size and weight, this structure makes it easier to hold.

The perspective view which showed the housing | casing of the outdoor unit of the air conditioner which concerns on this invention. The perspective view which showed the structure of the outdoor unit of the air conditioner which concerns on this invention. The perspective view which showed the state which moved the electrical component box of the outdoor unit of the air conditioner which concerns on this invention. It is explanatory drawing of the upper front cover of the outdoor unit of the air conditioner which concerns on this invention, (a) is a left view, (b) is a front view, (c) is a right view, (d) is AA 'expansion. Sectional drawing. The top view which showed the state which removes the upper front cover of the outdoor unit of the air conditioner which concerns on this invention. The Y section enlarged view of FIG. The elements on larger scale of the upper front cover concerning Example 2 of the present invention. The perspective view of the upper front cover which concerns on Example 3 of this invention. In the external appearance perspective view of the prior art example 1, (a) shows the whole figure, (b) is the external appearance perspective view of the state which removed some members from (a). The perspective view of the prior art example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Housing | casing 20 Bottom plate 21a 1st support | pillar 21b 2nd support | pillar 22a 1st upper frame 3 Heat exchanger 4 Axial fan 5 Compressor 50 Compressor room 6 Electrical component box 7 Upper front cover 71a 1st nail | claw 71b 1st 2 claw 72 1st recessed part 73 2nd recessed part 74 3rd recessed part 75 Screw hole 76 Inclined surface 77 Stepped part 78 Flange 79 Convex part in recessed part 8 Lower front cover 9 Screw

Claims (2)

In the outdoor unit of an air conditioner that houses a compressor, heat exchanger, and electrical component box inside, and has a front cover divided into an upper part and a lower part on the front of the main body,
The outdoor unit of an air conditioner, wherein the front cover has an L-shaped cross-section that extends to the side surface, and a vertically long recess is provided in the vicinity of the corner portion on the side surface. The outdoor unit of an air conditioner according to claim 1, wherein a surface of the concave portion on the corner portion side is inclined.

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