JP2014240734A - Outdoor unit of air conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit of an air conditioning device that can prevent damage to a case body during transportation.SOLUTION: An outdoor unit of an air conditioning device comprises: a box-shaped case body 30 fixed to a bottom plate 13 to surround a constant-speed compressor and an inverter type compressor; and an accumulator 23 arranged between the case body 30 and an outdoor heat exchanger. An opening 31A is provided in a rear plate part 31 of the case body 30 opposed to the accumulator 23. One end part 50A of a stress relaxation member 50 formed by bending a plate material made of sheet metal is fixed to an inner surface of the case body 30, and another end part 50B of the stress relaxation member 50 is connected to the accumulator 23 through the opening 31A.

Description

  The present invention relates to an outdoor unit of an air conditioner including a case body that surrounds a compressor.

  DESCRIPTION OF RELATED ART Conventionally, the outdoor unit of the air conditioning apparatus provided with the compressor arrange | positioned on a base board and an outdoor heat exchanger is known. This type of outdoor unit has been proposed with a box-shaped case body that accommodates the compressor in order to prevent the compressor from being exposed to rainwater or snow, or to shield the operating noise of the compressor. (For example, refer to Patent Document 1).

JP 09-137969 A

By the way, in the above-described configuration, the case body is formed in a box shape by bending a sheet metal, is fixed on the base plate, and is connected to an accumulator disposed between the case body and the outdoor heat exchanger. However, in recent years, the thickness of the sheet metal tends to be thin in order to realize weight reduction. For this reason, when the load of the accumulator is applied to the case body during transportation of the outdoor unit, the case body may be damaged due to deformation during transportation.
This invention is made | formed in view of the situation mentioned above, and it aims at providing the outdoor unit of the air conditioning apparatus which can prevent the failure | damage of the case body at the time of transport.

  In order to achieve the above object, the present invention provides an outdoor unit of an air conditioner that includes a compressor and an outdoor heat exchanger disposed on a base plate, and is a box that is fixed to the base plate and surrounds the compressor. And an accumulator disposed between the case body and the outdoor heat exchanger, and an opening is provided on a surface of the case body that faces the accumulator, and a sheet metal plate material is bent. The stress relaxation member is fixed to the inner surface of the case body, and a part of the stress relaxation member is connected to the accumulator through the opening.

  In this configuration, the stress relaxation member may have one end of the bent plate material fixed to the inner surface of the case body and the other end connected to the accumulator. The stress relaxation member may be formed by bending the plate material in a step shape.

  According to the present invention, the opening of the case body facing the accumulator is provided, and the stress relaxation member formed by bending a sheet metal plate is fixed to the inner surface of the case body, and a part of the stress relaxation member is Because it is connected to the accumulator through the opening, for example, even when a load is applied to the case body due to the displacement of the accumulator during transportation of the outdoor unit, the stress relaxation member is deformed and an excessive load is applied to the case body. Is prevented, and the case body is prevented from being damaged.

It is a perspective view which shows the outdoor unit of the air conditioning apparatus which concerns on this Embodiment. It is a perspective view which shows the internal structure of an outdoor unit. It is a side view which shows the arrangement | positioning relationship between a case body and an accumulator. It is a perspective view which shows the stress relaxation member in a case body. It is a fragmentary sectional view which shows the connection relation of a case body, a stress relaxation member, and an accumulator. It is a perspective view which shows the modification of a stress relaxation member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an outdoor unit of the air-conditioning apparatus according to the present embodiment.
The air conditioner 10 includes an outdoor unit 11 and a plurality of indoor units (not shown), and the outdoor unit 11 and the indoor units are connected by a gas pipe and a liquid pipe (not shown). The gas pipe is connected to one end of an indoor heat exchanger (not shown) of the indoor unit, and the liquid pipe is connected to the other end of the indoor heat exchanger. In addition, the directions such as front and rear, left and right, and up and down described below indicate directions when the outdoor unit 11 is installed and viewed from the front side.

The outdoor unit 11 is an upper blowing type outdoor unit that takes in outside air through an outdoor heat exchanger 18 disposed on a side surface and blows air upward, and includes a box-shaped housing 12 that is long in the vertical direction. Yes. The housing 12 includes a substantially rectangular bottom plate (base plate) 13, pillars 14 erected at four corners of the bottom plate 13, and a top plate that is provided at the upper end of the pillar 14 and blocks the upper surface of the housing 12. 15.
A blower 16 is provided on the upper portion of the housing 12, and the blower 16 blows air upward from an air outlet 15 a provided in the top plate 15. The left and right side surfaces and the rear surface of the blower 16 are closed by a plurality of side plates 17.

The outdoor heat exchanger 18 is formed in a substantially U shape along the left and right side edges and the rear edge of the bottom plate 13, extends from the bottom plate 13 to the top of the outdoor unit 11, and below the side plate 17, The left and right side walls and the rear wall are configured.
The front surface of the housing 12 is closed by a detachable front panel 19. In addition, an electrical box (not shown) in which a control unit that controls the operation of the air conditioner 10 is housed is provided in the upper part on the front side in the housing 12.

FIG. 2 is a perspective view showing an internal configuration of the outdoor unit 11.
Inside the housing 12, a constant speed type constant speed compressor 21, a variable capacity type inverter type compressor 22, an accumulator 23, an oil separator (not shown), a four-way valve 25, a refrigerant pipe connecting these, and the like Is arranged.

The constant speed compressor 21, the inverter type compressor 22, the oil separator and the accumulator 23 are each formed in a cylindrical tank shape, and are erected and fixed on the bottom plate 13 of the housing 12. In the present embodiment, the constant speed compressor 21 and the inverter type compressor 22 are arranged side by side on the front side of the bottom plate 13, and an oil separator is arranged behind the inverter type compressor 22. The constant speed compressor 21, the inverter type compressor 22, and the oil separator are accommodated in a case body 30 disposed on the bottom plate 13.
The case body 30 is formed in a box shape by combining bent sheet metals. Specifically, the rear plate portion 31 (see FIG. 3) and the left and right side plate portions 32 and 33 are integrally formed by being bent into a substantially U shape in plan view, and the top plate portion 34 is screwed thereon. Is done. Further, the front plate portion 36 is screwed to the front side of the side plate portions 32, 33 and the top plate portion 34, whereby the constant speed compressor 21, the inverter type compressor 22, and the case body 30 surrounding the oil separator are formed. Composed. Further, the case body 30 includes leg pieces 32A and 33A in which the lower ends of the side plate portions 32 and 33 are bent outward, respectively, and the leg pieces 32A and 33A and the bottom plate 13 are fixed to the bottom plate 13 by screwing. Has been.

  In the present embodiment, by housing the constant speed compressor 21 and the inverter type compressor 22 in the case body 30, it is possible to prevent rainwater and snow from falling on the constant speed compressor 21 and the inverter type compressor 22, and to maintain constant speed. Noise reduction can be realized by shielding the operating noise of the high speed compressor 21 and the inverter type compressor 22. Furthermore, by storing the oil separator in the case body 30, it is possible to ensure the heat retaining property in the case body 30 as compared to the case body 30, and the oil separator can be separated at low outside temperatures. Can be improved.

The constant speed compressor 21 and the inverter type compressor 22 are connected in parallel. One end of a suction pipe is connected to the suction side of the constant speed compressor 21 and the inverter type compressor 22, and the other end of the suction pipe is connected to a four-way valve 25 via an accumulator 23.
One end of a discharge pipe 27 is connected to the discharge side of the constant speed compressor 21 and the inverter type compressor 22, and the other end of the discharge pipe 27 passes through the top plate portion 34 of the case body 30 via an oil separator. Connected to the four-way valve 25. The hole penetrating the top plate portion 34 is opened, for example, on the rear plate portion 31 side, and is cut out, so that the top plate portion 34 can be attached and detached while the discharge pipe 27 is connected. In addition, a sheet member 35 that closes the above-described notch is disposed around the discharge pipe 27 in the top plate portion 34.

As shown in FIG. 3, the accumulator 23 is disposed behind the case body 30, that is, between the case body 30 and the outdoor heat exchanger 18. The accumulator 23 is installed on a pair of left and right mounts 38 and 38, and a piping space 39 is provided between the lower end portion 23 </ b> A of the accumulator 23 and the bottom plate 13. In addition, the case body 30 includes an opening (not shown) in the lower portion of the rear plate portion 31 that faces the accumulator 23. This opening is formed at a position facing the above-described piping space 39, and through this opening, a refrigerant pipe such as a suction pipe 40 that connects the lower end 23A of the accumulator 23 and the suction side of each compressor, and an oil return The tube is drawn out of the case body 30.
A first connecting portion 23B is formed at the center of the upper end portion of the accumulator 23, and one end of a support frame 37 is connected to the first connecting portion 23B. The support frame 37 extends from the upper end portion of the accumulator 23 to the rear outdoor heat exchanger 18 side, and is fixed to a connecting member (not shown) spanned between the two rear support columns 14 and 14. Thereby, since the upper end part of the accumulator 23 is fixed to the housing | casing 12 (support | pillar 14) via the support frame 37, rocking | fluctuation of this accumulator 23 is suppressed.
The accumulator 23 includes a second connecting portion 23 </ b> C that is connected to the upper portion of the rear plate portion 31 of the case body 30. The second connecting portion 23 </ b> C is connected to the rear plate portion 31 of the case body 30. In this configuration, the upper part of the case body 30 is connected to the second connecting portion 23 </ b> C of the accumulator 23, so that, for example, shaking of the case body 30 due to vibration during transportation of the outdoor unit 11 can be suppressed.

By the way, in the structure which provides the case body 30 in the housing | casing 12, in order to implement | achieve weight reduction, it exists in the tendency for the plate | board thickness of a sheet metal to become thin. In the present embodiment, the thickness of the sheet metal is changed from 2 mm to 0.6 mm.
As the plate thickness decreases, the rigidity of the case body 30 naturally decreases, and the case body 30 is likely to fluctuate (displace) due to vibration. In this embodiment, the upper part of the case body 30 is connected to the accumulator 23 disposed behind the case body 30, thereby suppressing the shaking of the case body 30.
On the other hand, since the upper end portion of the accumulator 23 is fixed to the housing 12 via the support frame 37, the swing of the accumulator 23 is suppressed. However, since the accumulator 23 is formed in a vertically long cylindrical shape, the position of the center of gravity is also high. When the outdoor unit 11 is transported, the entire housing 12 is swung so that the swing of the accumulator 23 is transmitted to the case body 30. .
Since the case body 30 forms leg pieces 32A and 33A by bending the lower end portions of the side plate portions 32 and 33 outward, the leg pieces 32A and 33A are arranged in the front-rear direction of the outdoor unit 11 (the accumulator 23 and the case body). 30 in the connecting direction (X direction in FIG. 3). For this reason, when the accumulator 23 swings in the connecting direction described above, the load (stress) due to the swing is concentrated on the screwed portions of the leg pieces 32A and 33A, and the bent portions of the leg pieces 32A and 33A close to the screwed portions. There was a problem of cracking.

This configuration is characterized in that the leg pieces 32A and 33A of the case body 30 are prevented from being damaged by vibration during transportation. Specifically, as shown in FIGS. 4 and 5, a stress relaxation member 50 that relaxes the stress caused by the swing of the accumulator 23 is disposed inside the case body 30. The stress relaxation member 50 is formed by bending a long sheet metal plate. In this embodiment, the stress relaxation member 50 is bent in a step shape, and the one end portion 50A is formed by the case body 30 (side plate). It is fixed to the inner surface of the portion 32) by means such as spot welding. The other end (part) 50 </ b> B is coupled to the second coupling portion 23 </ b> C of the accumulator 23 with a screw 51 through an opening 31 </ b> A formed in the rear plate portion 31 (opposing surface) of the case body 30.
According to this configuration, even when the accumulator 23 swings back and forth, the stress relaxation member 50 is deformed by the swinging stress, so that an excessive load is applied to the leg pieces 32A and 33A of the case body 30. Is prevented, and the case body 30 is prevented from being damaged.

The stress relaxation member 50 is connected to the one end portion 50A, and is formed between the first extension portion 50C extending substantially parallel to the other end portion 50B, and the first extension portion 50C and the other end portion 50B. The second end 50D extending substantially parallel to the one end 50A. The first extending portion 50 </ b> C extends in a direction substantially perpendicular to the connecting direction of the accumulator 23 and the case body 30 and is formed to be the longest in the stress relaxation member 50.
For this reason, the stress relaxation member 50 is deformed by swinging around the base end portion 50C1 of the first extension portion 50C, so that even if the accumulator 23 swings back and forth, it flexibly follows this swing. Therefore, it is possible to prevent the load due to the swing of the accumulator 23 from being transmitted to the case body 30.
Further, in the present embodiment, the stress relaxation member 50 is formed by bending a sheet metal, and is fixed to the case body 30 by welding, whereby a means for relaxing the stress on the case body 30 can be easily manufactured. it can. Furthermore, by adjusting the thickness of the sheet metal of the stress relaxation member 50 and the first extending portion 50C, it is possible to make the structure more flexibly compatible with the swing of the accumulator 23.

  As described above, according to the present embodiment, in the outdoor unit 11 of the air conditioner including the constant speed compressor 21, the inverter type compressor 22, and the outdoor heat exchanger 18 arranged on the bottom plate 13. A box-shaped case body 30 fixed to the bottom plate 13 and surrounding the constant speed compressor 21 and the inverter type compressor 22, and an accumulator 23 disposed between the case body 30 and the outdoor heat exchanger 18. An opening 31A is provided in the rear plate portion 31 of the case body 30 facing the accumulator 23, and one end portion 50A of a stress relaxation member 50 formed by bending a sheet metal plate is fixed to the inner surface of the case body 30, and the stress Since the other end portion 50B of the relaxation member 50 is connected to the second connecting portion 23C of the accumulator 23 through the opening 31A, the accumulator 23 swings back and forth. , The stress relaxation member 50 to deform by stress of the swing, the leg piece 32A of the case body 30, 33A excessive load is prevented from being applied to the damage of the case body 30 is prevented.

  Further, according to the present embodiment, since the stress relaxation member 50 is formed by bending a plate material in a step shape, the stress relaxation member 50 can be easily disposed in the case body 30 and the stress applied to the case body 30 can be reduced. Can be effectively mitigated.

  In addition, according to the present embodiment, the case body 30 includes an opening in the rear plate portion 31 facing the accumulator 23, and the constant speed compressor 21, the inverter type compressor 22, and the accumulator 23 are connected through the opening. Since the suction pipe 40 and the oil return pipe to be connected are drawn out, excessive stress acts on the suction pipe 40 and the oil return pipe even when the case body 30 is shaken in the connecting direction (front-rear direction). It is prevented.

As mentioned above, although the form for implementing this invention was described, this invention is not limited to above-mentioned embodiment, Various deformation | transformation and a change are possible based on the technical idea of this invention. For example, in the present embodiment, the stress relaxation member 50 is formed by bending a sheet metal in a step shape, but is not limited thereto. For example, as shown in FIG. 6, the stress relaxation member 60 is formed by bending the sheet metal into a substantially U shape in a plan view, then bending both ends outward at substantially right angles, and setting one end 60 </ b> A to the inner surface of the rear plate 31. The other end portion 60B may be connected to the second connecting portion 23C of the accumulator 23 through the opening 31A.
In this configuration, the stress relaxation member 60 can be more compactly arranged in the case body 30.

  Further, it is not always necessary to fix one end of the bent stress relaxation member in the case body and to connect the other end to the accumulator 23. It is also possible to connect the central portion (part) to the accumulator 23 and fix both end portions to the case body 30.

11 Outdoor unit 12 Housing 13 Bottom plate (base plate)
16 Blower 18 Outdoor heat exchanger 21 Constant speed compressor (compressor)
22 Inverter type compressor (compressor)
23 accumulator 23A lower end portion 23B first connection portion 23C second connection portion 30 case body 31 rear plate portion 31A opening 32, 33 side plate portion 32A, 33A leg piece 34 top plate portion 50, 60 stress relaxation member 50A one end portion 50B other end Part 50C First extension part 50D Second extension part 50C1 Base end part

Claims (3)

In an outdoor unit of an air conditioner including a compressor and an outdoor heat exchanger arranged on a base plate,
A box-like case body fixed to the base plate and enclosing the compressor; and an accumulator disposed between the case body and the outdoor heat exchanger; and a surface of the case body facing the accumulator The stress relief member formed by bending a sheet metal plate material is fixed to the inner surface of the case body, and a part of the stress relief member is connected to the accumulator through the opening. Outdoor unit of air conditioner.   2. The outdoor unit of an air conditioner according to claim 1, wherein the stress relaxation member has one end of the bent plate material fixed to an inner surface of the case body and the other end connected to the accumulator. .   The outdoor unit of an air conditioner according to claim 1 or 2, wherein the stress relaxation member is formed by bending the plate material in a step shape.

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