WO2021111618A1

WO2021111618A1 - Outdoor unit for air conditioner

Info

Publication number: WO2021111618A1
Application number: PCT/JP2019/047849
Authority: WO
Inventors: 嘉一村上; 優也秦
Original assignee: 三菱電機株式会社
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2021-06-10
Also published as: CN114746702A; GB2605275B; GB2605275A8; GB2605275A; US20220333795A1; JP7321291B2; AU2019476785A1; AU2019476785B2; JPWO2021111618A1; DE112019007948T5; GB202203529D0

Abstract

The purpose of the present invention is to provide an outdoor unit that is for air conditioners and that can ensure, when a fan guard is attached to a casing, design and durability of a cut section of a part having an extension removed therefrom while enabling a coating process of the fan guard. This outdoor unit for air conditioners is provided with: a casing that has an opening of an air path formed in a front panel; and a fan guard that is configured by combing a plurality of vertical bars and a plurality of transverse bars and that covers the opening. The fan guard has a coating formed on the surface, and one of the transverse bars of the fan guard is an engaging transverse bar provided with temporary fixing engagement parts at both ends in the transverse direction. The temporary fixing engagement parts are formed at positions projecting toward the position of the casing from the end faces of both ends, in the transverse direction, of the transverse bars other than the engaging transverse bar. A front panel is provided with engaging holes corresponding to the temporary fixing engagement parts, and the tips of the temporary fixing engagement parts have metal exposed therefrom and are inserted into the engaging holes.

Description

Outdoor unit of air conditioner

The present invention relates to an outdoor unit of an air conditioner, and particularly to a fixed structure of a fan guard provided at a blowout opening of an air passage for blowing air.

Conventionally, an outdoor unit of an air conditioner having a fan guard covering a blowout opening of an air passage for blowing air has been disclosed (see, for example, Patent Document 1). The outdoor unit of the air conditioner is configured to be provided with a fan guard so that, for example, the user does not touch the fan rotating from the blowout opening.

According to Patent Document 1, in the outdoor unit of the air conditioner, the fan guard is fixed by passing the screw through the screw insertion hole provided in the fan guard and fastening the screw to the front panel.

JP-A-2010-101592

However, in the outdoor unit of the air conditioner of Patent Document 1, the fan guard is formed of a metal wire. The surface of the fan guard is coated to ensure durability and design. A part of the plurality of cross rails of the fan guard is formed so that the end portion can be hung on a jig for coating treatment. That is, the end portion of the cross rail is formed longer than the state when it is attached to the housing of the outdoor unit of the air conditioner, and the long formed extension portion is held by the jig. The fan guard is coated while the extension portion is held by the jig, and when the coating treatment is completed, the extension portion is removed. When the extension portion is removed, the metal wire inside is exposed at the end of the cross rail. When the metal wire is exposed, there is a problem that the exposed portion is rusted and the durability and designability are impaired.

The present invention has been made to solve the above problems, and while enabling coating treatment of the fan guard, when the fan guard is attached to the housing, the cut surface of the portion from which the extension portion is removed is used. It is an object of the present invention to provide an outdoor unit of an air conditioner capable of ensuring durability and design.

The outdoor unit of the air conditioner according to the present invention is composed of a housing in which an opening of an air passage is formed on a front panel, a plurality of vertical rails, and a plurality of horizontal rails, and is a fan guard covering the opening. A film is formed on the surface of the fan guard, and one of the plurality of cross rails of the fan guard is inserted into the housing at both ends in the left-right direction. It is an engaging cross rail provided with a joint portion, and the temporary fixing engaging portion protrudes in the direction in which the housing is located from the end faces of both ends in the left-right direction of the plurality of cross rails other than the engaging cross rail. The front panel is provided with an engaging hole corresponding to the temporary fixing engaging portion, and the tip of the temporary fixing engaging portion is exposed to metal and is formed in the engaging hole. It has been inserted.

According to the outdoor unit of the air conditioner according to the present invention, according to the above configuration, the metal wire used as a hanging position on the jig during the coating process and the metal wire used for temporarily fixing to the front panel of the housing. Is common. Therefore, it is possible to temporarily fix the fan guard when attaching it to the front panel, and it is possible to accommodate the exposed metal wire inside the engaging hole. Therefore, rusting of the exposed portion of the metal wire of the fan guard is suppressed, and the durability and design of the outdoor unit of the air conditioner are improved.

It is a perspective view of the outdoor unit 1 of the air conditioner which concerns on Embodiment 1. FIG. It is a perspective view which shows the internal structure of the housing 10 of the outdoor unit 1 of the air conditioner shown in FIG. It is a perspective view of the front panel 3 of the housing 10 of the outdoor unit 1 of the air conditioner which concerns on Embodiment 1. FIG. It is an enlarged view which saw the part A of FIG. 1 from the inside side of the housing 10. It is an enlarged view which looked at the B part of FIG. 1 from the inside side of the housing 10. FIG. 5 is an enlarged cross-sectional view of the periphery of the temporary fixing engaging portion 31 of the fan guard 16 according to the first embodiment. FIG. 5 is an enlarged cross-sectional view of the periphery of the temporary fixing engaging portion 32 of the fan guard 16 according to the first embodiment.

Embodiment 1.
Hereinafter, embodiments of the outdoor unit 1 of the air conditioner according to the present invention will be described. The form of the drawings is an example, and does not limit the present invention. In addition, those having the same reference numerals in the respective figures are the same or equivalent thereof, which are common in the entire text of the specification. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one.

<Overall configuration of outdoor unit 1 of air conditioner>
FIG. 1 is a perspective view of the outdoor unit 1 of the air conditioner according to the first embodiment. The outdoor unit 1 of the air conditioner has, for example, a substantially rectangular parallelepiped housing 10. That is, as shown in FIG. 1, the outdoor unit 1 of the air conditioner comprises a bottom plate 2 forming the bottom of the outdoor unit 1 of the air conditioner and the front side of the housing 10 of the outdoor unit 1 of the air conditioner. Front panel 3, service panel 4 constituting the side surface side of the housing 10, front lower panel 5 arranged below the service panel 4, back upper panel 6 covering the right side and the back, and lower back. A side panel 7, a left side panel 8 provided on the left side facing the front panel 3 of the housing 10, and a top panel 9 constituting the top side of the housing 10 are provided.

As shown in FIG. 1, the front panel 3 is provided with two openings 20 arranged side by side in the vertical direction. Fans 14 are installed inside the openings 20. The opening 20 is covered with a fan guard 16, and the outdoor unit 1 of the air conditioner is configured to prevent the user from touching the fan 14. The rear upper panel 6, the rear lower panel 7, and the left side panel 8 are provided with an air suction port for taking in air inside the outdoor unit 1 of the air conditioner. The air sucked from the air suction port is discharged from the opening 20.

The configuration of the housing 10 of the outdoor unit 1 of the air conditioner is not limited to the above configuration, and can be changed as appropriate. The panels constituting the housing 10 of the outdoor unit 1 of the air conditioner such as the front panel 3 may be combined and integrally formed. Further, each panel may be further composed of a plurality of separate panels. In the following description, the side of the housing 10 where the front panel 3 is arranged is "front", and the rear upper panel 6 side of the housing 10 facing the front panel 3 is "rear", and the housing 10 The left-right direction toward the front panel 3 of the above is called "left" or "right". Further, the side of the top panel 9 of the housing 10 is referred to as "upper", and the side of the housing 10 where the bottom plate 2 facing the top panel 9 is located is referred to as "lower".

FIG. 2 is a perspective view showing the internal structure of the housing 10 of the outdoor unit 1 of the air conditioner shown in FIG. The inside of the outdoor unit 1 of the air conditioner is divided into a blower room S1 and a machine room S2 by a partition plate 17 and a heat exchanger 15.

In the blower chamber S1, an L-shaped heat exchanger 15 in a plan view, a fan 14 for sending air to the heat exchanger 15, a fan motor (not shown) for driving the fan 14, and a fan motor (FIG. A motor support 13 for fixing (not shown) and a motor support 13 are installed on the bottom plate 2.

In the machine room S2, an electric component (not shown) that supplies electric power to each component, an electric component box (not shown) that contains the electric component, and a refrigerant that is compressed and sent to the refrigerant pipe. A compressor 11 and a refrigerant container 12 are provided. The refrigerant that has flowed into the outdoor unit 1 of the air conditioner from an indoor unit equipped with an indoor heat exchanger (not shown) is compressed by the compressor 11, passes through the refrigerant piping, and is a heat exchanger arranged in the blower chamber S1. It is sent to 15. Cooling and heating functions are realized by the refrigerant circulation of the outdoor unit 1 and the indoor unit.

FIG. 3 is a perspective view of the front panel 3 of the housing 10 of the outdoor unit 1 of the air conditioner. The front panel 3 is a panel that covers the front side of the blower chamber S1. The outdoor unit 1 of the air conditioner has a fan 14 in the blower room S1. The front panel 3 has an opening 20 on the front side of the fan 14. By arranging the fan guard 16 made of metal wire so as to cover the opening 20 of the front panel 3, the outdoor unit 1 of the air conditioner avoids contact with the fan 14 such as a finger. The fan guard 16 is configured by combining a plurality of vertical rails 50 extending in the vertical direction and a plurality of horizontal rails 51 extending in the horizontal direction. The plurality of vertical rails 50 and the plurality of horizontal rails 51 are each made of a metal wire.

As shown in FIGS. 1 and 3, the fan guard 16 arranged in front of the outdoor unit 1 of the air conditioner is coated with resin or the like to ensure durability and design. That is, since the fan guard 16 constitutes the appearance of the outdoor unit 1 of the air conditioner, durability against corrosion, rust, etc. is required. Further, since the fan guard 16 covers most of the front panel 3 of the outdoor unit 1 of the air conditioner, it greatly affects the design of the outdoor unit 1 of the air conditioner. The surface of the fan guard 16 is coated with a resin or the like so that the metal wire inside does not come into contact with the outside air and moisture.

FIG. 4 is an enlarged view of part A of FIG. 1 as viewed from the inside of the housing 10. FIG. 5 is an enlarged view of portion B of FIG. 1 as viewed from the inside of the housing 10. The fan guard 16 has an engaging cross rail 30 having temporary

fixing engaging portions

31 and 32 at both ends in the left-right direction, respectively. As shown in FIG. 4, the temporary fixing engaging portion 31 which is one of the temporary

fixing engaging portions

31 and 32 of the engaging cross rail 30 is linear in the direction from the fan guard 16 toward the front panel 3. Extends to. The direction from the fan guard 16 toward the front panel 3 is referred to as a first direction. In other words, the first direction is perpendicular to the front panel 3. Further, as shown in FIG. 5, of the two temporary

fixing engaging portions

31 and 32, the other temporary fixing engaging portion 32 is bent so that the tip portions intersect in the first direction. In the first embodiment, the temporary fixing engaging portion 32 is bent downward.

As shown in FIG. 5, the temporary fixing engaging portion 32 is caught in the engaging hole 21 of the front panel 3 because the tip portion is bent downward. Further, as shown in FIG. 4, the temporary fixing engaging portion 31 is inserted into the engaging hole 21 and extends linearly. The engagement hole 21 includes a lower edge portion 22 located on the lower side and an upper edge portion 23 located above the lower edge portion 22. The lower edge portion 22 is located on the side where the fan guard 16 is located with respect to the upper edge portion 23. That is, the lower edge portion 22 is located in front of the upper edge portion 23. Therefore, the engaging hole 21 is a hole that opens upward and penetrates in the front-rear direction even when viewed from the front. The fan guard 16 can be temporarily fixed to the front panel 3 by engaging the temporary fixing engaging portion 32 and the engaging hole 21. After the fan guard 16 is temporarily fixed to the front panel 3, screws are inserted into the screw insertion portions 41 provided at the four corners of the fan guard 16, and the fan guard 16 is fixed to the front panel 3.

The screw insertion portions 41 are provided at both left and right ends of the fixed cross rail 40 located at the top of the plurality of cross rails 51 of the fan guard 16. Further, the screw insertion portion 41 is also provided at both left and right ends of the fixed cross rail 40 located at the bottom of the plurality of cross rails 51 of the fan guard 16.

FIG. 6 is an enlarged cross-sectional view of the periphery of the temporary fixing engaging portion 31 of the fan guard 16 according to the first embodiment. FIG. 7 is an enlarged cross-sectional view of the periphery of the temporary fixing engaging portion 32 of the fan guard 16 according to the first embodiment. The fan guard 16 is coated with a resin to ensure durability and design. The fan guard 16 is covered with a coating material such as polypropylene as a resin, for example. At the time of coating, the fan guard 16 is held by the jig by using the temporary fixing engaging portion 31 provided at the end of the engaging cross rail 30 among the plurality of cross rails 51 constituting the fan guard 16. To. Specifically, as shown in FIG. 6, at the time of coating, the temporary fixing engaging portion 31 includes a holding portion 35 held by a jig at a portion beyond the tip surface 34. The holding portion 35 is formed so as to incline and extend from the tip surface 34 of the temporary fixing engaging portion 31 and to be parallel to the temporary fixing engaging portion 31 on the tip side. The fan guard 16 is suspended from the jig by a bent portion of the holding portion 35 and coated.

The holding portion 35 is cut and removed after the coating is completed. Therefore, the tip surface 34 is not covered with the coating, and the metal wire is exposed. The tip surface 34 projects toward the front panel 3 side from the tip surface of the screw insertion portion 41 and the end portions of the other cross rails. As shown in FIG. 6, the tip surface 34 is located inside the housing 10 with the fan guard 16 attached to the front panel 3. Therefore, the tip surface 34 is less likely to come into contact with moisture and is prevented from rusting. Further, even if the tip surface 34 is rusted, it cannot be visually recognized from the appearance of the outdoor unit 1 of the air conditioner, so that the outdoor unit 1 of the air conditioner can maintain the design.

The fan guard 16 is formed in a simple shape with a small number of bends as shown in FIG. 6 before coating, and the holding portion 35 can be formed into a suspension position at the time of coating with a simple structure, so that it is easy to manufacture. is there.

1 outdoor unit, 2 bottom plate, 3 front panel, 4 service panel, 5 front lower panel, 6 back upper panel, 7 back lower panel, 8 left panel, 9 top panel, 10 housing, 11 compressor, 12 Refrigerant container, 13 Motor support, 14 Fan, 15 Heat exchanger, 16 Fan guard, 17 Partition plate, 20 Opening, 21 Engagement hole, 30 Engagement cross rail, 31 Temporary fixing engagement part, 32 Temporary fixing Engagement part, 34 tip surface, 35 holding part, 40 fixed horizontal rail, 41 screw insertion part, 50 multiple vertical rails, 51 multiple horizontal rails, L plan view, S1 blower room, S2 machine room.

Claims

A housing with an opening for the air passage on the front panel,
It is composed of a combination of a plurality of vertical rails and a plurality of horizontal rails, and includes a fan guard that covers the opening.
The fan guard
A film is formed on the surface,
One of the plurality of cross rails of the fan guard
It is an engaging cross rail provided with temporary fixing engaging portions inserted into the housing at both ends in the left-right direction.
The temporary fixing engaging portion is
It is formed at a position protruding in the direction in which the housing is located from the end faces of both ends in the left-right direction of the plurality of cross rails other than the engaging cross rails.
The front panel
An engaging hole corresponding to the temporary fixing engaging portion is provided.
The tip of the temporary fixing engaging portion is
An outdoor unit of an air conditioner in which metal is exposed and inserted into the engagement hole.
One of the two temporary fixing engaging portions is
The tip is formed so as to extend linearly in the first direction toward the front panel.
The other of the two temporary fixing engaging portions is
The outdoor unit of the air conditioner according to claim 1, wherein the tip portions are bent so as to intersect in the first direction.
The engaging hole is
Opened upwards,
The other of the two temporary fixing engaging portions is
The outdoor unit of the air conditioner according to claim 1 or 2, wherein the tip portion is bent downward and abuts on the lower edge portion located below the engagement hole.
The engaging hole is
The outdoor unit of the air conditioner according to claim 3, wherein in the front panel, the lower edge portion is on the side where the fan guard is located, rather than the upper edge portion located above the lower edge portion. ..
The fan guard
A fixed cross rail located at the end in the vertical direction among the plurality of cross rails is provided.
The fixed cross rail
The outdoor unit of the air conditioner according to any one of claims 1 to 4, further comprising screw insertion portions through which screws are inserted at both ends.