JPH10246472A - Enclosure structure of electric equipment for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the cooling effect for an electric parts without degrading the performance of an air conditioner by regulating the air passage resistance in an electric equipment unit by an outside air guide plate to branch a suction flow passage to unify the flow of the sucked outside air. SOLUTION: The outside air is sucked from a suction port of an enclosure provided on the outer contour of the enclosure by driving a fan of an outdoor unit enclosure of an air conditioner, and the air is sucked from a suction port 13 into an electric equipment box 6 in which the electric equipment 6a is stored. A horizontal division wall 16 to shield the heat generated from an electronic parts 15 is provided between an electronic control substrate 14 and the electronic parts 15. The sucked outside air is led to the position where electric equipment 6a is closely arranged in a branched manner by an outside air guide plate 17 provided on the horizontal division wall 16, and the air after cooling each electric parts 6a, is discharged from a discharge port 18 to a fan chamber. As a result, the cooling effect of the electric equipment 6a on the electronic control substrate 14 can be improved without increasing the air feed quantity or reducing the operation frequency of a compressor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing structure of electrical components for improving the performance of an air conditioner.

[0002]

2. Description of the Related Art FIG.
Is the housing structure of the conventional air conditioner shown in
Reference numeral 1 denotes an outer shell of an outdoor unit housing of an air conditioner, and a partition plate 8 divides a blower room 4 containing a blower 2 and a heat exchanger 3 and a compressor room 7 containing a compressor 5 and an electrical component unit 6. It is configured. 9 is a heat sink provided on one side of the electrical component unit 6 on the side of the blower chamber 4, and 10 is a lead plate for guiding the flow of the intake air to the surface of the heat sink 9, and a box air intake provided below the outer shell 1. It is disclosed that the cooling device is provided in an intake channel 12 that flows from the port 11 through the heat sink 9 to the blower room 4 through the heat sink 9 to enhance the cooling effect.

[0003]

The conventional air conditioner has a housing structure in which the outside air sucked from the box air inlet 11 by the blower 2 is supplied to the heat sink 9 by the guide lead plate 10 attached to the heat sink 9. Therefore, the effect can be obtained only by cooling the heat sink 9. For this reason, an effect can be expected for components that have a cooling effect by being attached to the heat sink 9, but for other components, it is necessary to increase the cooling effect by using another means.
As conventional general means, means for increasing the rotation speed of the blower 2 to increase the air volume or reducing the operating frequency of the compressor 4 driven by the inverter to suppress the heat generation amount is used. The air conditioning capability of the air conditioner has been reduced, or the noise during operation of the air conditioner has been increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to control an air conditioner by adjusting an air path resistance in an electric component unit to make uniform the outside air taken in. An object of the present invention is to improve the cooling effect on electric components without deteriorating the performance, and to secure a degree of freedom in designing the opening positions of the intake port and the exhaust port of the outside air.

[0005]

Means for Solving the Problems A housing structure of an electrical component for an air conditioner according to the present invention is an outdoor unit housing 1 provided with a blower 2, a heat exchanger 3, and a compressor 5, and the outdoor unit housing. The electrical component 6a is stored in the upper part, and the intake port 1 is provided on one side and the other side of the side.
3 and an electric outlet box 18 provided with an exhaust port 18. A horizontal partition wall 16 for vertically dividing the electrical main unit 6 is provided, and the intake passage 12 is branched into the horizontal partition wall 16. An outside air guide plate 17 is provided.

Further, the housing structure of the electrical component for an air conditioner according to the second aspect of the present invention comprises an outside air guide plate 17 on the electronic control board 14 side.
Is provided.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a housing structure of an electrical component for an air conditioner with a part of an outer shell removed. FIG. 2 is a perspective view showing the structure of the electrical equipment for an air conditioner. FIG. 3 is a perspective view showing the internal structure of the electrical equipment for an air conditioner. In the figure, 1 is the outer shell of the outdoor unit housing, 2 is a blower, 3 is a heat exchanger, 5 is a compressor, 6 is an electrical component box housing the electrical components 6a, and 11 is to take in outside air into the housing. The box 13 is an inlet for taking in outside air into the electric component box 6 and is opened substantially at the center of one side of the electric box 6. Reference numeral 14 denotes an electronic control board on which the electric component 6a for controlling the operation of the blower 2 and the like of the outdoor unit is mounted. The electronic control board 14 is disposed above the electric component box 6. Reference numeral 15 denotes a heat-generating electronic component that is not mounted on the electronic control board 14, and is disposed below the electric component box 6. Reference numeral 16 denotes a partition horizontal wall provided between the electronic control board 14 and the electronic component 15 to block heat generation of the electronic component, and is disposed in the middle of the electric component box 6. Reference numeral 17 denotes an outside air guide plate provided on the horizontal wall for adjusting the air passage resistance in the electric component box 8, and a portion having a large air resistance in which cooling by ordinary ventilation is difficult, for example, the denseness of the electrical components 6a. The section is formed in a U-shape so as to branch and guide to the position. Reference numeral 18 denotes an exhaust port for taking in the electric component box 8 and discharging the outside air branched and guided by the outside air guide plate 17. The exhaust port 18 opens on one side of the electric component box 6 opposite to the intake port 13. Making money.

Next, the operation will be described. First, due to the airflow generated by rotating the blower 2, the external air sucked from the box air inlet 11 provided on the outer shell 1 of the housing is sucked from the air inlet 13 of the electric component box 6 accommodating the electrical component 6a. The outside air that has been sucked in is
It is guided so as to branch and guide to a location having a large air resistance in which cooling by ordinary ventilation is difficult to be performed, for example, a dense position of the electrical components 6a. Then, each electrical component 6 a is cooled to be exhausted, and is discharged from the exhaust port 18 to the blower room 4.

Embodiment 2 Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In the first embodiment, the outside air guide plate 17 for improving the air path is provided between the electronic control board 14 and the electronic component 15, but the outside air guide plate 17 is provided on the electronic control board 14 as shown in FIG. In addition to the effects obtained in the first embodiment, the effects of improving the positioning accuracy of the outside air guide plate 13 and improving the assembly accuracy can be obtained.

[0010]

Since the present invention is configured as described above, it has the following effects.

An outdoor unit housing 1 provided with a blower 2, a heat exchanger 3, and a compressor 5, an electric component 6a is housed in an upper portion of the outdoor unit housing, and exhaust is provided on one side and the other side of the side. An electric component box 6 having an opening 18 is provided, and a horizontal partition wall 16 for vertically dividing the electric component box 6 is provided, and an outside air guide plate is formed so as to branch the intake passage 12 into the horizontal partition 16. 17
By providing the air flow, as a means for cooling the components existing in the place where the ventilation is inferior, of the components mounted on the electronic control board, which have generated heat by increasing the operating frequency of the compressor of the outdoor unit, There is an effect that the cooling effect of the electronic components can be improved without taking measures involving noise due to the increase and without lowering the operating frequency of the compressor.

Further, by providing the outside air guide plate on the electronic control board side, there is an effect that the degree of freedom in designing the positions of the outside air intake port and the outside air hole can be ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a housing structure of an electrical component for an air conditioner according to Embodiment 1 of the present invention, with a part of an outer shell removed.

FIG. 2 is a perspective view showing a structure of an electrical component for an air conditioner according to Embodiment 1 of the present invention.

FIG. 3 is a perspective view showing the internal structure of the electrical component for an air conditioner according to Embodiment 1 of the present invention.

FIG. 4 is a perspective view showing an internal structure of an electrical component for an air conditioner according to Embodiment 2 of the present invention.

FIG. 5 is a perspective view showing the structure of a conventional electrical component for an air conditioner.

[Explanation of symbols]

1 housing of air conditioner, 2 blower, 3 heat exchanger, 5
Compressor, 6 electrical component box, 6a electrical components, 12 intake passage, 13 intake port, 14 electronic control board, 16 horizontal wall, 17 outside air guide plate, 18 exhaust port.

Continuation of the front page (72) Inventor Yoshihiko Yoshikawa 2-6-1, Otemachi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Engineering Co., Ltd. (72) Inventor Yoshihiro Iwasaki 2-6-1, Otemachi, Chiyoda-ku, Tokyo 3 Inside Rishi Electric Engineering Co., Ltd. (72) Inventor Makoto Tanigawa 2-6-1, Otemachi, Chiyoda-ku, Tokyo Mitsui Electric Engineering Co., Ltd. (72) Masato Mori 2-3-2, Marunouchi, Chiyoda-ku, Tokyo Within Mitsubishi Electric Corporation (72) Inventor Isao Kawasaki 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation

Claims (2)

[Claims] 1. An outdoor unit housing 1 provided with a blower 2, a heat exchanger 3, and a compressor 5. An electric component 6a is housed in an upper portion of the outdoor unit housing, and air is sucked into one side and the other side of the side surface. The electrical component box 6 provided with the opening 13 and the exhaust port 18 is provided.
A housing structure of an electrical component for an air conditioner, comprising: a partitioning horizontal wall 16 for partitioning the upper and lower sides, and an external air guide plate 17 provided to branch the intake passage 12 from the partitioning horizontal wall 16. . 2. A housing structure for electrical equipment for an air conditioner according to claim 1, wherein the outside air guide plate 17 is provided on the electronic control board 14 side.