JP3054561B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a heat exchanger, a blower, and an electrical box in a main body, and for blowing air after heat exchange.

[0002]

2. Description of the Related Art Among air conditioners, an electrical box (electrical component box) for a ceiling-suspended type air conditioner is disclosed in Japanese Utility Model Publication No. Sho 62-62.
No. 15699 is known, and an electrical box mounted on an outdoor unit of a separation type air conditioner is disclosed in Japanese Utility Model Publication No. 57-12368.
Is known. In these air conditioners, the main body (or the outdoor unit main body) is generally formed of sheet metal because of low cost, easiness of processing, and the like, and the case of the electrical box is also entirely formed of sheet metal. Various electrical components are attached to a resin-made printed wiring board, and are screwed in a sheet metal case.

On the other hand, Japanese Patent Publication No. 57-58501 discloses an electrical component box in which the entire case is molded of resin.

[0004]

However, in the former case made of sheet metal, although processing and the like are easy, short-circuiting (electric short-circuiting) is likely to occur when the terminals of the electrical components and the exposed wiring of the substrate touch the case. There is a point. In particular, in the case of a ceiling-suspended air conditioner that is likely to shake during an earthquake, installation work, or the like, the exposed portion of the wiring in the electrical box or the terminal of the electrical component may touch the case.

On the other hand, in the case of the latter case made of resin,
Even if the wiring, etc. touches the case, the resin material has electrical insulation and there is no danger of short-circuiting.However, when assembling and fixing to the sheet metal body of the air conditioner with screws, careless insertion of screws is required. When tightened, there is a problem that cracks and cracks are apt to occur in the resin case having brittle properties.

[0006] As described above, the resin case is easily damaged when assembled to the main body, so that there is a problem that it is difficult to securely and easily fix the case with screws.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air conditioner which is not easily short-circuited and can be securely and easily fixed to a sheet metal body.

[0008]

In order to achieve the above object, the present invention relates to an air conditioner which includes a heat exchanger, a blower and an electric box in a main body made of sheet metal and blows air after heat exchange. the electrical component box includes a case made of a resin material electrical component mounted circuit board is housed inside the opening, which is composed of a sheet metal lid for covering the opening, the plate the sheet metal of the lid
By fixing the electronic box to the main body made of gold,
It is characterized by being arranged on one side wall.

The present invention also provides an air conditioner that includes a heat exchanger, a blower, and an electric box in a main body made of sheet metal and blows air after heat exchange, wherein the electric box has an electric board inside an opening. And a cover made of a sheet metal that covers the opening .
Of the resin material so that the lid of the
Is placed opposite to the sheet metal body, and the sheet metal body
The electrical box is fixed by fixing the sheet metal lid to
Characterized in that it is arranged on one side wall of the main body.
You.

[0010]

According to the first aspect of the present invention, the main body and the electrical box are attached by fixing the lid of the electrical box and the main body with screws or the like. Cracks do not occur even if tightened too much. In addition, spot welding and the like can be performed. Therefore, the electrical box can be easily and reliably fixed to the main body.

Further, since the electrical board is housed in a case made of a resin material having electrical insulation, there is no danger of short-circuiting even if the bare parts of the wiring and components of the electrical board touch the case.

According to the second aspect, in addition to the first aspect, the case made of a resin material is disposed so as to face the main body made of sheet metal, so that the electric parts and wiring in the electric box are electrically conductive. It is possible to prevent a short circuit directly through the main body made of sheet metal having the property.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the air conditioner 1
Is a ceiling-embedded air conditioner that is suspended and fixed in a ceiling space. The decorative panel 2 has an inlet 3 on one side and an outlet 4 on the other side. This is a so-called one-way type air conditioner in which air is blown from the outlet 4 after heat exchange.

The decorative plate 2 is provided detachably, and when the decorative plate 2 is removed, the inside of the main body 6 is exposed.

In the main body 6, a blower 5, a heat exchanger 7, a drain pump 28 (see FIG. 2), and an electric box 9 for controlling the operation are housed. As shown in FIG. The sucked air is sent to the heat exchanger 7 by the blower 5, where the heat is exchanged, and then blown out from the outlet 4.

As shown in FIG. 1, at the corners of the four walls of the main body 6, a total of four hanging metal fittings 8 are provided on the outside, each of which is fixed to a bolt 12 hanging from the ceiling.

The electrical box 9 houses various electrical components for controlling the operation of the air conditioner together with the electrical board. The electrical box 9 is composed of a case 11 and a lid 13, and is fixed to one side wall of the main body 6 with screws as shown in FIG.

The case 11 is made of a resin material, and is specifically formed of a resin such as a modified polyphenylene oxide. The lid 13 is made of the same sheet metal as steel as the main body 6.

Since the case 11 is made of a resin material as described above, the resin material has an electrical insulating property, so that there is no danger of short-circuiting even when exposed terminals or wires of electrical components touch the case. In addition, when the cover 13 is made of a metal material, when the cover 13 of the electrical box 9 and the main body 6 of the air conditioner are fixed, the fixing portions are both made of sheet metal, so that they have good consistency and can be fixed securely. As much as possible, there is no cracking caused by overtightening the screws.
In addition, spot welding and the like can be performed.

The case 11 is formed in a substantially box shape having an opening 14, and various electric components 15 are formed through the opening 14.
The electrical board 17 to which is attached is stored. Wiring and connection work on the electrical board can be easily performed through the opening 14.

The cover 13 has a cover 19 for covering the opening 14 of the case 11 and an engaging portion 21 which is bent into a substantially U-shape and engages with the case. A window 23 is formed in the cover portion 19 for viewing the inside of the case from outside. The window 23 is provided with a slide plate 25, and the handle 25 a formed on the upper portion thereof is picked up and pulled up to slide to open the window so that the inside of the case 11 can be seen from the window 23.

In the portion of the case 11 corresponding to the window 23,
Frequently used components such as a central control terminal and a humidifier, and an address setting switch of a multi-type air conditioner having a plurality of indoor units are collectively arranged without removing the electrical box 9 only from the window 23 alone. , Making it easier to maintain. The upper portion of the case 11 is fixed to the engaging portion 21 of the lid 13 with screws or the like.

As shown in FIG. 3, the lid 13 is formed so that its vertical length H is longer than the vertical length L of the case 11, and the lid 13 is attached to the top surface 6a of the main body 6 of the air conditioner 1 (FIG. 2). (See Fig. 2) to stably hold.

The electrical box 9 has a structure in which a case 11 made of a resin material faces the main body 6 with respect to the main body 6 made of sheet metal of the air conditioner, and the lid 13 made of metal sheet is separated from the main body 6. Are arranged as follows. Thus, the lid 13 is attached to the main body 6.
The short-circuit between the main body 6 and the wiring board or the like in the electrical component box 9 is prevented by being separated from the main body 6.

The heat exchanger 7 exchanges heat by passing the wind blown by the blower 5. The heat exchanger 7 is connected to a refrigerant inlet / outlet pipe (not shown) for introducing a refrigerant into the heat exchanger 7, so that the refrigerant is introduced from an outdoor unit (not shown).

Next, the operation of the present embodiment will be described.

During operation of the air conditioner 1, as shown by the solid line arrows in FIG. 2, the air sucked from the suction port 3 at the center of the decorative board 2 by the drive of the blower 5 passes through the heat exchanger 7. Then, the air after the heat exchange is blown out from the blowout port 4 of the decorative board 2.

When the air conditioner 1 is manufactured, the electrical component box 9 is assembled to the main body 6. At the time of this assembling, as shown in FIG. Then, the cover 13 of the electrical component box 9 is stopped with the screw 27. At this time, since the main body 6 and the lid 13 are both made of sheet metal, there is no breakage or breakage even if the screws are strongly tightened. Therefore, the fastening can be easily performed, and the manufacturing is easy. Furthermore, since the case 11 made of a resin material is opposed to the main body 6 made of sheet metal,
It is possible to prevent the electrical components and wirings inside from being directly short-circuited via the sheet metal body having electrical conductivity.

The case 11 made of a resin material and the cover 13 made of a sheet metal are separately manufactured from different materials and then assembled with screws so that the electrical box 9 can be easily manufactured, and The shape and size of the case 11 can be easily changed according to the conditions.

During operation of the air conditioner 1, even if the bare wiring and terminals in the electrical box 9 may come into contact with the case 11, the case 11 is made of a resin having electrical insulation. High safety without short circuit.

On the other hand, at the time of maintenance in the electrical box 9, first, the user can pull the handle 25a of the slide plate 25 to easily see the inside of the electrical box from the window 23, and perform maintenance and trial operation from the window 23. Easy. If necessary, the electrical box 9 can be removed from the main body 6 and the case 13 can be repaired by removing the lid 13.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

For example, the lid 13 and the case are not limited to those fixed with screws, and the same applies to a configuration in which the elasticity of the lid 13 made of sheet metal is used without using screws or the like. Effects can be obtained.

[0035]

According to the air conditioner of the first invention, the electrical box assembled in the main body is composed of a resin material case having electrical insulation and a sheet metal cover. When mounting the main unit and the electrical box, fix the lid of the electrical box and the main unit with screws, etc., but the fixed parts are made of sheet metal, so they are made of matching. Does not occur. In addition, spot welding and the like can be performed. Therefore, the electrical box can be easily and reliably fixed to the main body. Further, since the electrical board is housed in a case made of a resin material having electrical insulation, there is no danger of short-circuiting even if the wiring and the bare parts of the components of the electrical board touch the case.

According to the second aspect of the invention, in addition to the first aspect, the case made of a resin material is disposed so as to face the main body made of sheet metal, so that the electrical parts and wiring in the electrical box are electrically conductive. It is possible to prevent a short circuit directly through the main body made of sheet metal having the property.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a sectional view of the air conditioner shown in FIG.

FIG. 3 is a perspective view showing the electrical box shown in FIG.

FIG. 4 is an exploded perspective view of the electrical box shown in FIG.

[Description of Signs] 1 Air conditioner 6 Main body 9 Electrical box 11 Case 13 Lid

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 61-1553832 (JP, U) Japanese Utility Model Showa 62-18286 (JP, U) Japanese Utility Model Showa 56-158383 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) F24F 1/00 401

Claims (2)

(57) [Claims] 1. An air conditioner that includes a heat exchanger, a blower, and an electrical box in a main body made of sheet metal and blows air after heat exchange, wherein the electrical box has an electrical board housed inside an opening. A case made of a resin material, and a sheet metal cover for covering the opening, and the sheet metal cover is attached to the sheet metal body.
The electrical box on one side wall inside the main body.
An air conditioner characterized by being placed . 2. An air conditioner comprising a heat exchanger, a blower, and an electric box in a main body made of a sheet metal , wherein an electric board is housed inside an opening of the air box . It is composed of a case made of a resin material and a cover made of sheet metal covering the opening, and the cover made of sheet metal is separated from the main body made of sheet metal.
Separate the resin material case from the sheet metal body
And fix the sheet metal lid to this sheet metal body.
The air conditioner wherein the electrical box is arranged on one side wall in the main body .