JP4992569B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner in which an electrical component storage box is installed across the blower chamber side and the compressor chamber side at the upper end of a partition plate.

Conventionally, an outdoor unit of this type of air conditioner has a blower chamber and a compressor chamber partitioned by a vertical metal partition plate erected on the outdoor unit bottom plate, and a resin electrical component storage box is an electrical component storage unit. In order to perform cooling, the blower chamber exposed portion of the electrical component storage box is attached to the upper portion of the partition plate at a position exposed in 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).

  3 is a partially broken front view of the outdoor unit of the conventional air conditioner described in Patent Document 1, and FIG. 4 is a plan view of the outdoor unit of the conventional air conditioner described in Patent Document 1. Is. As shown in FIGS. 3 and 4, the electrical component storage box 1, electrical component 2, blower chamber exposed portion 3 of the electrical component storage box 3, fan 4, partition plate 5, front blowing grill 6, front plate 7, heat exchange It comprises a blower chamber 9 in which a device 8 is disposed, a compressor chamber 11 in which a compressor 10 is disposed, and an 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.

FIG. 5 is a partial cross-sectional view of the conventional electrical component storage box mounting portion described in Patent Document 2 as seen from the front. Here, the same parts are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 5, 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 2000-104950 A

  However, in the conventional configuration, when the resin blow grill is intentionally ignited, the resin fan ignites, and the flame melts the blower chamber exposed portion of the resin electrical component storage box, so that the internal electrical equipment There was a problem that the product could be burned out.

  In addition, even in the case of an electrical component storage box having a structure in which the blower chamber exposed portion of the resin electrical component storage box is covered with a metal cover, the resin electrical component storage box is melted by the heat of the flame ignited by the resin fan. It could not be maintained, and in the worst case, there was a problem that the metal cover could fall.

  The present invention solves the above-described conventional problems, has an electrical component storage box that ensures flame retardancy, can be easily attached to the electrical component storage box, and reliably ensures flame retardancy 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 covers a portion exposed to the blower chamber side of the electrical component storage box with a metal cover, and covers this cover with the front plate of the outdoor unit and the partition plate It is configured to perform mechanical fixing with metal parts such as screws and screws.

  As a result, even if the plastic fan catches fire, the electrical components inside the resin electrical component storage box can be protected, and even if the resin electrical component storage box does not melt and maintain its shape, the front plate, partition plate, etc. Since it hold | maintains with the metal cover firmly fixed with the metal parts and the screw, it can prevent that the resin electrical equipment storage box falls together with the metal cover.

  The outdoor unit of the air conditioner of the present invention has an electrical component storage box that ensures flame retardancy, can be easily attached to the electrical component storage box, can reliably ensure flame retardancy, and has higher safety. Products can be provided to users at low cost.

In the first invention , the blower chamber and the compressor chamber are partitioned by a vertical metal partition plate provided upright on the bottom plate of the outdoor unit, and a compressor and the like are arranged in the compressor chamber. The product storage box is installed across the blower chamber side and the compressor chamber side, the exposed portion of the electrical component storage box on the blower chamber side is covered with a metal cover, and the metallic cover is divided into two parts. The metal cover is mechanically fixed with metal parts such as the front plate of the outdoor unit and the partition plate and screws, and a gap is provided between each of the metal covers to release the heat generated by the electrical components. Even if the fan is ignited, the electrical components inside the plastic electrical component storage box can be protected, and even if the resin electrical component storage box melts and cannot maintain its shape, metal parts such as front plates and partition plates and screws Resin electrical components to be held by a metal cover that is firmly fixed by Preventing the pay box falls each metallic cover has electrical equipment storage box secured flame retardancy, it is easily attached to the electrical equipment storage box, it can reliably ensure the flame resistance, electrical The metal cover that covers the part exposed to the blower chamber side of the product storage box is divided into two parts, and a gap for releasing the heat generated by the electrical equipment is provided between them. It can have a function of releasing heat inside the storage box.

In the second invention , in particular, the metal cover of the first invention has an L-shaped screw receiving portion that is hooked on a metal part such as an outdoor unit front plate or the partition plate, so that the screw is dropped. Even so, the metal cover can be held and the metal cover can be reliably prevented from falling.

  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 outdoor unit of an air conditioner according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view of an electrical component storage box according to the first embodiment of the present invention. It is.

  In FIG. 1, the outdoor unit of the air conditioner includes an outer shell made up of a bottom plate 17, a blowout grill 6, a front plate 7, a side plate 18, and a top plate 19.

  A vertical metal partition plate 5 erected on the bottom plate 17 partitions a blower chamber 9 in which the heat exchanger 8 is disposed and a compressor chamber 11 in which the compressor 10 and the like are disposed.

  The electrical component storage box 1 storing the electrical component 2 for controlling the air conditioner and the like at the upper end of the partition plate 5 is installed across the blower chamber 9 side and the compressor chamber 11 side to cool the electrical component 2. Therefore, the exposed portion 3 is provided on the blower chamber 9 side of the electrical component storage box 1. The exposed portion 3 has a heat sink as a heat generating component and an opening through which air is circulated inside the electrical component storage box 1. In particular, the air is circulated by the fan 4 and the electrical component 2 is cooled.

  The partition plate 5 and the front plate 7 are made of metal, and the electrical component storage box 1 and the blower chamber 9 side exposed portion 3 of the electrical component storage box, the fan 4, and the blowout grill 6 are made of resin.

  The exposed portion 3 is covered with a metal cover 12, and the cover 12 is mechanically fixed by metal parts such as the front plate 7 and the partition plate 5 and screws 15.

  Further, as shown in FIG. 2, the metal cover 12 covering the blower chamber 9 side exposed portion 3 of the electrical component storage box 1 is divided into two parts 12a and 12b, each of which has an L-shape to prevent the dropout. Metal covers 12a and 12b which have screw receiving portions 13a and 13b and are mechanically fixed by screws 15 through holes 14a and 14b provided in the metal front plate 7 and the metal partition plate 5 and divided into two. The gap 16 for releasing the heat generated in the electrical component 2 is provided between them.

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

  First, even if the plastic fan catches fire, the electrical components inside the plastic electrical component storage box can be protected, and even if the resin electrical component storage box melts and cannot maintain its shape, it can be made of metal such as front plates and partition plates. Since it is held by a metal cover firmly fixed with parts and screws, it has an electrical component storage box that prevents the resin electrical component storage box from falling together with the metal cover and ensures flame retardancy, It can be easily installed in the electrical component storage box, ensuring flame resistance.

  In addition, the metal cover is divided into two parts, and a gap for releasing heat generated in the electrical component is provided between them, thereby ensuring the flame retardancy and further releasing the heat inside the electrical component storage box. be able to.

  Furthermore, by having the L-shaped screw receiving portion, the metal cover can be held even if the screws fall off, and the metal cover can be reliably prevented from falling.

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

1 is an exploded perspective view of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention. The exploded perspective view of the electrical equipment storage box in Embodiment 1 of this invention Partially broken front view of an outdoor unit of a conventional air conditioner Plan view of outdoor unit of conventional air conditioner Partial sectional view seen from the front of the conventional electrical equipment storage box mounting part

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

Claims (2)

The blower chamber and the compressor chamber are partitioned by a vertical metal partition plate erected on the outdoor unit bottom plate, and a compressor and the like are disposed in the compressor chamber, and an electrical component storage box is provided at the upper end of the partition plate. It is installed across the blower chamber side and the compressor chamber side, the portion exposed to the blower chamber side of the electrical component storage box is covered with a metal cover, and the metallic cover is divided into two parts. of the metal cover of the outdoor unit front plate, have rows mechanical fixation by metal parts and the screw such the partition plate, provided with a clearance for releasing heat generated in the electrical component during each of said metal cover An outdoor unit of an air conditioner characterized by that. 2. The outdoor unit of an air conditioner according to claim 1, wherein the metal cover has an L-shaped screw receiving portion that is hooked on a metal part such as the outdoor unit front plate and the partition plate. .

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