JP2011080723A - Outdoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical component storage box for securing flame retardancy of an outdoor unit of an air conditioner. <P>SOLUTION: In the outdoor unit of the air conditioner, a metallic cover is divided into two of upper and lower parts and covers an exposed area on the blower chamber side of the resin-made electrical component storage box, the resin-made electrical component storage box is fixed by inserting projecting claws integrally formed on the resin-made electrical component storage box into slits provided on the metallic cover which covers a lower part, and the resin-made electrical component storage box is concealed by the metallic cover which covers an upper part to prevent fire spread to the resin-made electrical component storage box. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to an electrical component storage box with improved workability and improved flame retardancy.

  Conventionally, this type of outdoor unit of an air conditioner is a resin electrical component in which a blower chamber and a compressor chamber are partitioned by a vertical metal partition plate erected on the outdoor unit bottom plate, and the exterior is covered with a metal cover Since the storage box cools the electrical components, the blower chamber exposed portion of the electrical component storage box is attached to the upper part of the partition plate at a position where it is exposed to the blower chamber where the resin fan rotates (see, for example, Patent Document 1). ).

 In some cases, a metal cover is provided at a position covering the opening when projected from the rotation center of a fan installed in the blower chamber (see, for example, Patent Document 2).

5 is an exploded perspective view of an outdoor unit of a conventional air conditioner described in Patent Document 1, and FIG. 6 is an exploded perspective view of a conventional electrical component storage box described in Patent Document 2. .
As shown in the figure, the electrical component storage box 1, electrical component 2, blower chamber exposed portion 3 of the electrical component storage box, fan 4, partition plate 5, front blowing grill 6, front plate 7, and heat exchanger 8 are provided. The blower chamber 9 is arranged, the compressor chamber 11 in which the compressor 10 is arranged, and the outdoor unit bottom plate 17.
The partition plate 5 and the front plate 7 are made of metal, and the electrical component storage box 1 and the blower chamber exposed portion 3 of the electrical component storage box, the fan 4, and the blowout grill 6 are made of resin. As shown in the figure, the opening 16 is covered with a metal plate 12 that covers the outside of the electrical component storage box 1.

JP 2003-106573 A JP 2007-165805 A

  However, in the conventional configuration, the blower chamber and the compressor chamber are partitioned by a vertical metal partition plate erected on the outdoor unit bottom plate, a compressor and the like are disposed in the compressor chamber, and the partition plate Install a resin electrical equipment storage box on the upper end across the blower chamber side and the compressor chamber side, cover the exposed portion of the resin electrical equipment storage box on the blower chamber side with a metal cover, and make a metal cover By mechanically fixing the metal cover with screws such as the outdoor unit front plate and the partition plate, the metal cover needs to be fixed with screws, which increases the number of assembling operations.

Also, because the metal cover is screwed to metal parts such as the outdoor unit front plate and the partition plate, a part that cannot be in close contact with the resin electrical equipment storage box occurs, and the flame enters the inside through the gap. There was a problem that there was a possibility of burning electrical equipment.
The present invention solves the above-mentioned conventional problems, has an electrical component storage box that ensures flame retardancy, can be easily mounted in the electrical component storage box, and has improved flame retardancy reliably. It aims to provide outdoor units.

In order to solve the above-mentioned conventional problems, the outdoor unit of the air conditioner of the present invention is a metal partition plate erected on the bottom plate of the outdoor unit of the air conditioner. The electric component storage box made of resin is installed and fixed across the blower chamber side and the compressor chamber side on the upper end of the partition plate, and the electric component storage box is placed in the upper and lower portions. Covered with a metal cover composed of two parts, the electrical component storage box has a claw having a protrusion formed integrally with the electrical component storage box, and the protrusion is provided in the lower metal cover It is engaged with the part.

 With this configuration, even if the nail is melted by the flame, the electrical component can be prevented from spreading without the flame entering the inside of the metal cover.

The outdoor unit of the air conditioner of the present invention can provide a user with a highly safe product at low cost by improving the flame retardance of the electrical component storage box.

The exploded perspective view of the electrical equipment storage box in the 1st Embodiment of this invention The enlarged view of the nail | claw part vicinity in the 1st Embodiment of this invention The perspective view of the electrical equipment storage box in the 1st Embodiment of this invention Sectional drawing of the electrical equipment storage box in the 1st Embodiment of this invention The exploded perspective view of the outdoor unit of the outdoor unit of the conventional air conditioner An exploded perspective view of a conventional electrical component storage box

 A first aspect of the present invention is a metal partition plate erected on a bottom plate of an outdoor unit of an air conditioner, which partitions the outdoor unit into a blower chamber and a compressor chamber, and a resin electrical component storage box is connected to the partition plate. The electric component storage box is installed and fixed across the blower chamber side and the compressor chamber side at the upper end of the fan, and the electric component storage box is covered with a metal cover composed of an upper part and a lower part, and the electric component storage The box has a claw having a protrusion formed integrally with the electrical component storage box, and the protrusion is engaged with a slit provided in the lower metal cover, so that even if the claw is melted, the metal cover It does not spread to the inside, and the metal cover can be easily attached to the resin electrical equipment storage box, and the resin electrical equipment storage box can be covered from the top and bottom, improving the flame retardancy and improving workability. Can do.

 In particular, the second invention has a claw having a projection formed integrally with the electrical component storage box of the first invention, and provided in the metal cover that covers the upper part of the electrical component storage box. By inserting the metal cover, the metal cover can be easily attached to the resin electrical equipment storage box.

 In the third invention, in particular, the claw of the first or second invention has a shape for holding the electric wire extending from the electrical component, thereby improving workability while improving flame retardancy. it can.

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an exploded perspective view of an electrical component storage box according to the first embodiment of the present invention, FIG. 2 is an enlarged view of the vicinity of a claw portion according to the first embodiment of the present invention, and FIG. FIG. 4 shows a cross-sectional view of an electrical component storage box in the first embodiment of the present invention.

1 and 2, an electrical component storage box 1 storing electrical components 2 for controlling the air conditioner and the like is installed at the upper end of the partition plate 5 across the blower chamber side and the compressor chamber side. Cover the exposed portion 3 on the blower chamber side with the metal covers 20 and 21 from above and below, and provide a protrusion 22a provided on the claw 22 integrally formed with the resin electrical component storage box at the bottom of the electrical component storage box. The resin electrical component storage box is concealed by the metal cover 20 that is fixed by being inserted into the slit portion 23 provided in the metal cover 21 to be covered.

  By making such a configuration, most of the resin electrical equipment storage box is covered with the metal covers 20, 21, and the exposed resin part is only the part of the nail 22, so that the nail 22 is melted by the flame. However, no flame penetrates the inside of the metal covers 20 and 21, and only the minimum melting can be suppressed and the damage can be minimized.

  Further, in FIG. 4, a shape 22b for holding the electric wire (in this case, a shape for locking the electric wire from the upper side to the lower side) is provided on the claw 22 having the protruding shape 22a configured integrally with the resin electrical component storage box. By providing them together, the nail 22 is effectively used while reducing the exposed resin portion, and the structure is made to reduce the use of excess resin while improving flame retardancy.

 About the outdoor unit of the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, in the metal cover that covers the blower chamber side exposed part of the resin electrical equipment storage box in the upper and lower parts separately and covers the resin electrical equipment storage box even if the resin fan ignites, the flame is hidden to conceal the resin electrical equipment storage box. It is possible to prevent the resin electrical component storage box from reaching and to ensure flame retardancy.

  Also, it is fixed by inserting a claw with a protruding shape that is integrated with the resin electrical component storage box into the slit provided in the metal cover that covers the lower part, and it is integrated with the resin electrical component storage box By attaching the claw having the projected shape so as to be fixed by the metal cover that covers the upper part, it is possible to prevent the claw from being melted by the flame and to surely prevent the metal cover covering from below from falling.

 In addition, by providing the nail having a protruding shape composed of a resin electrical component storage box together with the shape to hold the electric wire, flame resistance is improved by reducing the exposed resin part, and extra Can reduce the use of resin.

As described above, the outdoor unit of the air conditioner according to the present invention has an electrical component storage box that ensures flame retardancy, and can be easily attached to the electrical component storage box to ensure flame retardance reliably. Therefore, it can be applied to uses such as a heat pump water heater.

DESCRIPTION OF SYMBOLS 1 Electrical component storage box 2 Electrical component 3 Blower chamber side exposed part of electrical component storage box 4 Fan 5 Partition plate 6 Blowing grill 7 Front plate 8 Heat exchanger 9 Blower chamber 10 Compressor 11 Compressor chamber 12, 12a, 12b Cover 13a, 13b Screw receiving portion 14a, 14b Hole 15 Screw 16 Clearance 17 Bottom plate 18 Side plate 19 Top plate 20 Metal cover for covering the upper portion 20b Side surface of the metal cover for covering the upper portion 21 Metal cover for covering the lower portion 22 Resin electrical component storage Claw constructed integrally with box 22a Protrusion shape 22b Shape for holding electric wire 23 Slit portion provided in metal cover covering lower part

Claims (3)

The outdoor unit is partitioned into a blower chamber and a compressor chamber by a metal partition plate erected on the bottom plate of the outdoor unit of the air conditioner, and a resin electrical component storage box is placed on the upper end of the partition plate. The electric component storage box is covered with a metal cover composed of two parts, an upper part and a lower part, and is installed and fixed across the chamber side and the compressor chamber side. An outdoor unit of an air conditioner having a claw formed integrally with a storage box and having a protrusion, and the protrusion is engaged with a slit provided in the lower metal cover. It has a claw having a projection shape that is integrally formed with the electrical component storage box, and is fixed by being inserted into a slit portion provided in the metal cover that covers the upper part of the electrical component storage box. The outdoor unit of the air conditioner according to claim 1. The outdoor unit of an air conditioner according to claim 1, wherein the claw has a shape for holding an electric wire extending from the electrical component.