JPH09292142A - Outdoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a cooling efficiency of a reactor, by a method wherein an opening which faces an air flow passage in a heat exchanging room is formed in a partition plate and a mounting plate for a reactor is fixedly mounted on the partition plate such that the mounting plates face the opening. SOLUTION: In a middle level part of a partition plate 2 which is as high as an intermediate point between two fans 10A, 10B, an opening 21 which faces an air flow passage in a heat exchanging chamber is formed. A mounting plate 81 on which a reactor 8 is mounted faces this opening 21 and has a peripheral portion thereof fixedly secured to the partition plate 2. Since an air which is enegized by the fans 10A, 10B is blown off toward the mounting plate 21 through the opening 21, the reactor 8 is cooled by way of the mounting plate 21. Simultaneously, an air introduced to a machine chamber 3 through a cooling air intake opening 12 flows around the reactor 8 so as to cool the reactor 8.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an outdoor unit of an air conditioner.

[0002]

2. Description of the Related Art An outdoor unit of a conventional air conditioner is shown in FIG.
, (A) is a partially cutaway schematic front view, (B)
7A is a sectional view taken along line BB of FIG. 7A, FIG. 8C is a schematic sectional view taken along line CC of FIG. 7A, and FIG.

The inside of the casing 1 is divided into left and right by a partition plate 2, and a machine room 3 is formed on one side and a heat exchange chamber 4 is formed on the other side.

In the heat exchange chamber 3, an inverter-driven compressor 5, a control box 6, an accumulator 7, an inverter reactor 8, a four-way valve 19, a refrigerant pipe 18 and the like are arranged.

An L-shaped heat exchanger 9 and a pair of upper and lower fans 10A and 10B are arranged in the heat exchange chamber 4, and the L-shaped heat exchanger 9 is formed on the rear surface 1a of the casing 1. Air intake 11
And the air intake 12 formed on the left side surface 1b. The fans 10A and 10B are installed so as to face the air outlets 13A and 13B formed in the front panel 1c of the casing 1.

When the fans 10A, 10B are driven by the motors 14A, 14B, outside air is sucked into the heat exchange chamber 4 through the air intakes 11 and 12, and heat is exchanged with the refrigerant in the process of passing through the heat exchanger 9. After raising or lowering the temperature by
It is urged by A and 10B and discharged from the air outlets 13A and 13B.

The base plate 1d of the housing 1 is provided with a cooling air inlet 12 so as to be located below the partition plate 2, and a bracket 13 having a U-shaped cross section is formed so as to cover the air inlet 12. It is fixed at 1d. The reactor 8 for the inverter is fixed on the bracket 13 via its mounting plate 81.

A reactor cover 9 for covering the reactor 8 is inserted into the opening provided at the lower end of the partition plate 2 from the machine chamber 3 toward the heat exchange chamber 4 so as to project into the heat exchange chamber 4, and the upper portion thereof is screwed. It is fixed to the partition plate 2 by fastening at 16.

During operation of the air conditioner, however, the outside air is sucked into the machine room 3 through the cooling air attachment port 12, passes through the openings 14 and 15 formed on both sides of the bracket 13, and the reactor 8 is opened.
It is cooled in the process of flowing over both sides of.

Next, after cooling them in the process of flowing around the compressor 5, accumulator 7, etc., the intake 6A formed in the lower right side of the control box 6 is cooled.
After cooling them by flowing around the heat generating devices such as power transistors and capacitors housed in the control box 6, the blow-off port 6B formed on the upper left side surface of the control box 6 is cooled. It is blown out into the heat exchange chamber 4 and sucked into the fan 10A.

[0011]

In the conventional outdoor unit described above, the reactor 8 is cooled only by the outside air flowing around it, so that the temperature of the reactor 8 may rise abnormally. Further, since the reactor 8 and the control box 6 are separated from each other, there is a problem that the lead wire connecting them becomes long.

[0012]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above problems, and its gist is to divide the inside of a device casing into a heat exchange chamber and a machine chamber by a partition plate. In an outdoor unit of an air conditioner in which a heat exchanger and a fan are installed in the heat exchange chamber and an inverter drive compressor, a control box and a reactor for the inverter are installed in the machine chamber, the heat is applied to the partition plate. The outdoor unit of the air conditioner is characterized in that an opening facing the air flow path in the exchange chamber is formed, and the mounting plate of the reactor is faced to this opening and fixed to the partition plate.

Another feature is that the opening is formed by providing the partition plate with a reactor cover projecting into the heat exchange chamber, and the reactor mounting plate is mounted on the opening edge of the partition plate. And fixedly installed.

Thus, the reactor is cooled by the air flowing through the heat exchange chamber through its mounting plate.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIG. The middle part of the partition plate 2, namely, Juan 10A and 10
An opening 21 facing the air flow path in the heat exchange chamber 4 is formed at an intermediate height of B, and a mounting plate 81 of the reactor 8 is formed in the opening 21.
And its peripheral edge is fixed to the partition plate 2. In FIG. 1, the same members as those of the conventional one shown in FIG. 3 are designated by the same reference numerals.

When the fans 10A and 10B are driven, the air urged by the fans 10A and 10B is opened.
The reactor 8 is cooled through the mounting plate 81 because the spraying is performed on the mounting plate 81 that faces 21 through 21. At the same time, the air sucked into the machine room 3 from the cooling air inlet 12 flows around the reactor 8, and the reactor 8 is also cooled by this air.

A second embodiment of the present invention is shown in FIG. In the second embodiment, the reactor cover 9 is fixed to the middle stage of the partition plate 2 in a state of protruding into the heat exchange chamber 4, and the lower opening 91 of the reactor cover 9 has an air flow path inside the heat exchange chamber 4. To face.

The mounting plate 81 of the reactor 8 is fixed to the reactor cover 9 and the partition plate 2 with one end thereof being placed on the opening edge of the partition plate 2 so as to face the lower opening 91. In FIG. 2, the same members as the conventional members shown in FIG. 3 are designated by the same reference numerals.

However, when the air conditioner is operating, the fan 10
The air urged by B passes through the lower opening 91 of the reactor cover 9 and blows on the mounting plate 81 of the reactor 8 to cool the reactor 8. At the same time, the air sucked into the machine room 3 from the cooling air inlet 12 flows around the reactor 8 to cool the reactor 8.

[0020]

According to the present invention, since the partition plate is formed with an opening facing the air flow path in the heat exchange chamber and the reactor mounting plate is faced to this opening and fixedly installed on the partition plate, the reactor is It is cooled by the air flowing through the heat exchange chamber via the mounting plate. As a result, the cooling efficiency of the reactor is improved and the length of the lead wire connecting the reactor and the control box is shortened, so that the cost can be reduced.

Even if the partition cover is provided with a reactor cover protruding into the heat exchange chamber to form an opening, and the reactor mounting plate is placed on the opening edge of the partition plate and fixedly installed, the same effect as above can be obtained. Can play.

[Brief description of drawings]

FIG. 1 is a partially cutaway schematic front view showing a first embodiment of the present invention.

FIG. 2 is a partially cutaway schematic front view showing a second embodiment of the present invention.

FIG. 3 shows an outdoor unit of a conventional air conditioner, (A)
Is a partially broken schematic front view, (B) is BB of (A)
2 is a schematic cross-sectional view taken along the line, (C) is a schematic cross-sectional view taken along the line CC of (A), and (D) is an enlarged cross-sectional view near the reactor.

[Explanation of symbols]

 1 Instrument Cabinet 2 Partition Plate 3 Machine Room 4 Heat Exchange Room 5 Compressor 6 Control Box 12 Cooling Air Intake 10A, 10B Fan 8 Reactor 81 Mounting Plate 21 Opening

Claims (2)

[Claims] 1. An interior of the casing is divided into a heat exchange chamber and a machine chamber by a partition plate, a heat exchanger and a fan are installed in the heat exchange chamber, and an inverter drive compressor, a control box and an inverter are provided in the machine chamber. In the outdoor unit of an air conditioner in which the reactor is installed, an opening facing the air flow path in the heat exchange chamber is formed in the partition plate, and the reactor mounting plate is faced to the opening. An outdoor unit for an air conditioner, which is fixedly installed on a partition plate. 2. The opening is formed by providing the partition plate with a reactor cover protruding into the heat exchange chamber, and the reactor mounting plate is fixedly installed on the opening edge of the partition plate. The outdoor unit for an air conditioner according to claim 1.