JP2003194359A - Cabinet structure for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cabinet structure for an air conditioner allowing easy formation of a heat insulating air layer in the cabinet body and capable of providing a high heat insulating effect while maintaining its strength. <P>SOLUTION: In the structure of a cabinet 1 of the air conditioner comprising right and left cabinet parts 2, 3 of resin for installing components of an indoor unit, and a casing part 4 of resin connectably provided with the cabinet parts 2, 3 and forming the backside of an air supply passage 6, the casing part 4 is formed into a hollow by extrusion molding so that one or more heat insulating air layers 8, 9 are formed in the cross section of the casing part 4. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a cabinet structure for an indoor unit of an air conditioner.

[0002]

2. Description of the Related Art Cabinets for indoor units of air conditioners are
A heat exchanger is arranged on the front side, and a ventilation passage for passing indoor air inside the indoor unit is formed inside, and when passing indoor air, it is insulated from the outside and does not reduce air conditioning efficiency. It has a structure like this.

As shown in FIG. 3, in the conventional cabinet structure, the heat insulating sheet 1 is provided on the back surface of the cabinet body 100.
No. 01 was attached to obtain a heat insulating effect. The heat insulating sheet 101 is prepared as a separate member from the cabinet main body 100 formed by injection molding a resin, and is attached to the cabinet main body 100 with an adhesive or the like.

However, in such a conventional cabinet structure, various heat insulating sheets 101 prepared separately are used.
It is necessary to paste the tape manually, which is troublesome and difficult to reduce the cost. Further, if the heat insulating sheet 101 is not properly attached, the heat insulating effect cannot be sufficiently obtained, and not only the air conditioning efficiency is deteriorated, but also the cabinet body 1 during the cooling operation.
There is a possibility that dew condensation may occur on the outer wall of 00 to wet the inside of the main body 100 of the cabinet and cause malfunction or failure of the electric components inside. Moreover, since the heat insulating sheet 101 may be peeled off due to long-term use, maintenance was also difficult.

[0005]

Therefore, there is disclosed a cabinet structure of an air conditioner in which the cabinet body is injection-molded in the hollow and the hollow portion is filled with a heat insulating material to reduce the number of parts. 63-213728.

However, regardless of the case where the hollow portion is formed only by a smooth flat surface or curved surface,
With complicated shapes that bend everywhere, it becomes difficult to uniformly fill the heat insulating material in every corner. Moreover, since the hollow portion is not sufficiently reinforced in the front-rear direction in a single space, the mechanical strength of the cabinet body is lowered. However,
If a hollow portion partitioned into a plurality of chambers is to be formed by injection molding, a large amount of equipment and a high-level molding technique are required, and it is difficult to compromise in terms of productivity and cost.

The present invention has been made in view of the above-mentioned conventional problems, and an adiabatic air layer can be easily formed in the cabinet body, and a high adiabatic effect can be obtained while maintaining strength. The purpose is to provide.

[0008]

In order to achieve the above object, the cabinet structure of an air conditioner according to the present invention comprises a left and right resin cabinet part in which components of an indoor unit are installed, and these left and right cabinet parts. In a cabinet structure of an air conditioner constituted by a resin-made casing portion which is provided so as to be connectable and forms a back side of a ventilation passage, at least one heat insulating air layer is formed in a cross section of the casing portion. The casing is characterized by being extruded into a hollow shape.

According to this structure, multiple heat-insulating air layers can be easily formed inside the casing by extrusion molding, and heat insulation can be improved.

In this case, when the adiabatic air layer is divided into a plurality of chambers by the reinforcing ribs integrally formed with the casing portion, the rooms are insulated from each other, the heat insulating effect is further enhanced, and the casing portion is reinforced and strengthened. Can be prevented.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Although not shown, the indoor unit of the air conditioner according to the present embodiment includes an evaporator as an indoor heat exchanger, a crossflow fan that sucks indoor air and blows cooling air into the room, and a fan. A drive fan motor, a drain pan that receives condensed water droplets, a control electrical box, etc. are installed in a cabinet that is an assembly base, and the front open surface of the cabinet is covered with a front panel that has an air inlet and an air outlet. Is equipped with.

FIG. 1 is an exploded perspective view of the cabinet. As shown in FIG. 1, this cabinet 1 is
It has a separate structure divided into three in the width direction,
It is composed of a motor side injection molding part 2 as a right side cabinet part, a cross flow fan bearing side injection molding part 3 as a left side cabinet part, and a central casing part 4.

Unlike the motor side injection molding part 2 and the cross flow fan bearing side injection molding part 3 which are the injection molding members on both sides, the casing part 4 is formed by extrusion molding, which makes it suitable for air conditioner models. Correspondingly, it can be shaped into any length dimension. Further, the motor-side injection molding part 2 and the cross-flow fan bearing-side injection molding part 3 are configured so that the end portions of the injection molding part 3 facing the casing part 4 are fitted to the left and right end surfaces of the casing part 4, respectively.

In the cabinet 1 having such a structure, by using a resin molded product by extrusion molding for the central casing portion 4, the casing portion 4 having a short length is used, for example, when used in a small model. When combined with the left and right motor-side injection molding parts 2 and the cross-flow fan bearing-side injection molding part 3 and used in larger models, by using the casing part 4 having a long length, various dimensions can be obtained. The cabinet 1 corresponding to the indoor unit can be obtained.

FIG. 2 shows a cross section of the casing portion 4. The upper part of the casing part 4 is a double wall part 41 consisting of a front wall 4a and a rear wall 4b connected at the upper and lower ends, and the lower part of the double wall is flat behind the rear wall part 4b. The triple wall portion 42 has a large back wall 4c. The back wall 4c is
The upper and lower horizontal surfaces 4d and 4e are continuous with the rear wall 4b, and the lower horizontal surface 4e also defines the bottom surface of the casing portion 4.

Between the front wall 4a and the rear wall 4b, the rear wall 4b
Adiabatic air layers 8 and 9 are formed between and the back wall 4c, respectively. Therefore, the triple wall portion 42 has the double adiabatic air layers 8 and 9.

The insulating air layer 8 connects the front wall 4a and the rear wall 4b and is divided into a plurality of chambers by a plurality of reinforcing ribs 10 extending in the width direction of the casing 4. Similarly, the adiabatic air layer 9 connects the rear wall 4b and the back wall 4c and is partitioned into a plurality of rooms by a plurality of reinforcing ribs 11 extending in the width direction of the casing 4.

In the air passage 6 in front of the casing portion 4,
A cylindrical cross flow fan 5 is arranged. Therefore, the front surface of the casing portion 4 has a curved surface in consideration of the flow of air due to the rotation of the cross flow fan 5. Further, the front surface of the casing portion 4 is
Generally, the heat insulating effect is weaker and the temperature difference between the inside and the outside becomes larger as it goes upward. Therefore, dew condensation is likely to occur. Therefore,
A drain pan 7 is provided for receiving water droplets that flow down along the front surface of the front wall 4a to prevent water from splashing on the cross flow fan 5.

When the motor side injection molding part 2 and the cross flow fan bearing side injection molding part 3 are assembled on both sides of the casing part 4 to assemble as a cabinet 1, both ends of the adiabatic air layers 8 and 9 are opened at these injection molding parts. A plurality of heat insulating spaces are formed inside the casing part 4 by being sealed by the second and third parts. As a result, the respective rooms of the adiabatic air layers 8 and 9 are also insulated from each other, and the heat insulation is further enhanced. In particular,
In the triple wall portion 42, since the double heat insulating air layers 8 and 9 are formed, the heat insulating efficiency is further improved, and the dew condensation on the front wall 4a of the casing 4 can be effectively prevented. This makes it possible to eliminate the heat insulating member attached to the casing part 4 to prevent dew condensation.

Further, the front wall 4a and the rear wall 4b, and the rear wall 4b and the back wall 4c are connected to each other at several places by the reinforcing ribs 10 and 11, respectively, so that the heat insulating air layer 8 does not deteriorate the strength of the casing portion 4. , 9 can be formed. Therefore, the cabinet 1 can be securely attached only by providing the hooking structure on the back wall 4c of the casing portion 4 without considering the reinforcement of the attachment plate (not shown) fixed to the indoor wall.

[0021]

As described above, according to the cabinet structure of the air conditioner according to the present invention, the hollow casing portion can be easily formed by extrusion molding, and the hollow portion functions as a heat insulating air layer. There is no need to attach a heat insulating member. Therefore, the labor of attaching the heat insulating member by hand is omitted, and the cost is reduced.

Further, due to this heat insulating effect, dew condensation on the casing is effectively prevented, and there is no risk that the dew condensation water will fall outside the main body and wet other equipment or the floor.

Further, since the heat insulating air layer is divided into a plurality of chambers by a plurality of integrally formed reinforcing ribs extending in the width direction of the casing portion, the strength of the hollow casing portion is reduced. It can be prevented.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a cabinet according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a casing portion.

FIG. 3 is a sectional view showing a cabinet structure of a conventional air conditioner.

[Explanation of symbols]

1 cabinet 2 Motor side injection molding part 3 Cross flow fan bearing side injection molding part 4 Casing part 4a front wall 4b rear wall 4c back wall 5 cross flow fan 8, 9 Adiabatic air layer 10, 11 Reinforcing rib

Claims (2)

[Claims] 1. A left and right resin cabinet part in which constituent parts of an indoor unit are housed, and a resin casing part which is provided so as to be connectable to these left and right cabinet parts and which forms a back side of a ventilation passage. In the cabinet structure of an air conditioner, the casing part is extruded into a hollow shape so that at least one heat insulating air layer is formed in a cross section of the casing part. 2. The cabinet structure for an air conditioner according to claim 1, wherein the heat insulating air layer is divided into a plurality of rooms by a reinforcing rib integrally formed with the casing portion.