JPH06159737A - Heat exchanging device - Google Patents

Abstract

PURPOSE:To perform a positive cooling of electrical components make a compact chamber for storing the electrical components and prevent rain water from flowing into the chamber. CONSTITUTION:A partition plate 11 for defining an inside part of a casing into a heat exchanging chamber 12 and a machine chamber 13 is provided with a projecting part 19 projected toward the heat exchanging chamber 12. An electrical component part 22 for use in controlling an operation of a compressor and the like is fixed to the projecting part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange unit in which a housing has a partition plate and is divided into a heat exchange chamber and a machine room.

[0002]

2. Description of the Related Art In recent years, an outdoor heat exchange unit such as an air conditioner is often equipped with a variable capacity compressor equipped with an inverter. Here, since the inverter uses electric components such as power transistors and reactors that generate a relatively large amount of heat, it is necessary to take measures against heat generation. For example, as disclosed in Japanese Utility Model Publication No. 4-22185, the outside air is guided to the equipment room of the main body, and the above-mentioned electrical components are cooled by this outside air, and then this outside air is passed through the opening of the partition plate to the heat exchanger room. I am trying to flush it.

[0003]

In the heat exchange unit having such a structure, the space between the various electric components in the equipment room must be sufficiently maintained so that the cooling air can smoothly flow in the equipment room. As a result, the equipment room may increase in size. In addition, the opening for guiding the cooling air to the equipment room must be provided with a structure for preventing rainwater and the like from entering, which complicates the structure.

An object of the present invention is to ensure the cooling of electrical components, to make the chamber in which the electrical components are housed compact, and to prevent rainwater from entering this chamber. is there.

[0005]

In order to achieve this object, according to the present invention, a partition plate that divides the inside of the housing into a heat exchange chamber and a machine chamber is provided with a protrusion protruding toward the heat exchange chamber. The projection is provided with an electrical component for controlling the operation of the compressor or the like.

[0006]

Since the projection of the partition plate to which the electric component is attached is cooled by the air flowing in the heat exchange chamber, the electric component is less likely to be abnormally heated.

[0007]

1 to 3, reference numeral 1 denotes an outdoor heat exchange unit of a separation type air conditioner. The heat exchange unit includes a plurality of indoor heat exchange units (not shown) and a refrigerant pipe 2.
It can be connected. The blower outlets 3 and 4 are provided on the front surface, and two propeller fans 5 and 6 are vertically arranged inside thereof. Further, the heat exchange unit 1 is provided with a suction port 7 from the rear surface to the left side surface. Reference numeral 8 is a heat exchanger arranged inside the suction port. Reference numeral 9 is a connection base formed on the right side surface of the heat exchange unit 1, and valves 10 are vertically arranged behind the connection base.
The above-mentioned refrigerant pipe 2 is connected to 0.

The internal structure of the heat exchange unit 1 is as shown in FIGS. 2 and 3, in particular. 11 is a partition plate,
The inside of the housing of the heat exchange unit 1 is divided into a heat exchange chamber 12 and a machine room 13. And the heat exchange chamber 12
The receiver tank 14, the oil separator 15, the accumulator 16 and the like are housed outside the heat exchanger 8 and the two propeller fans 5 and 6 described above. On the other hand, machine room 13
The inverter compressor 17 is housed in. Reference numeral 18 denotes an electrical equipment box, which is placed on the upper part of the partition plate 11. The electrical component box 18 mainly accommodates electrical components (not shown), such as a printed circuit board, which generate a relatively small amount of heat.

Reference numeral 19 denotes a protrusion provided near the center between two vertically arranged propeller fans 5 and 6, and projects toward the heat exchange chamber 12 side.

As shown in FIGS. 4 and 5, the partition plate 11 is provided with an opening 20, and a protruding member 21 made of sheet metal bent into a substantially U-shaped cross section is fitted into the opening 20. A portion extending from the opening 20 serves as a protrusion 19 protruding toward the heat exchange chamber 12 side. Reference numeral 22 is a reactor (electrical component), and a mounting surface 23 thereof is coated with a thermal diffusion compound 24 (see FIG. 5) commonly called silicon putty. Then, the mounting surface 23 coated with the heat diffusion compound 24 is fixed to the vertical surface 25 of the protrusion 19 by the screw 30. This heat diffusion compound 24 improves the adhesion between the mounting surface 23 of the reactor 22 and the vertical surface 25 of the protrusion 19, and makes it easier for the heat of the reactor 22 to be transferred to the vertical surface 25 of the protrusion 19 via the mounting surface 23. ing.

Here, since the reactor 22 is housed in the protrusion 19 so that the gap 28 between the iron core 26 and the coil 27 of the reactor 22 has a vertical relationship, that is, the iron core 26 is horizontal, the heat radiation of the reactor 22 is prevented. It rises above this gap 28.

The heat exchange unit 1 having such a structure
The two propeller fans 5 and 6 are rotated by the operation of. Then, the outdoor air flows as shown by the solid arrow in FIG. In particular, the air sucked from the rear right side of the heat exchange unit 1 is guided to the front center side of the heat exchange unit 1 (left side in FIG. 5) by the partition plate 11 serving as a guide wall as shown by the solid arrow in FIG. Be freaked out. Here, the partition plate 11 has a heat exchange chamber 1
Since the protrusion 19 protruding toward the second side is formed, the protrusion 19 is cooled by the flow of air along the partition plate 11. Here, the temperature of this air is heated to about 55 ° C., for example, because the heat exchanger 8 functions as a condenser during the cooling operation. However, since the temperature of the coil of the reactor rises to about 150 ° C. or higher, it is possible to sufficiently suppress the heat generation of the reactor 22 even by the air heated by the heat exchanger 8. According to the experiment, the reactor 2
The temperature of the second coil 27 is about 150 ° C., and the reactor 22
The temperature of the mounting plate 23 and the vertical portion 25 of the protrusion 19 is 85
It was lowered to about ℃. As a result, abnormal heating of the reactor 22 (160 ° C. or higher) was sufficiently suppressed.

Further, the coil 27 of the reactor 22 and the iron core 26
By accommodating the reactor 22 in the projection 19 so that the gap 28 between the reactor 22 and the upper and lower sides of the reactor 22 rises, the heat of the reactor 22 rises from the gap 28 and is radiated.
This is considered to be one of the reasons why the abnormal heating of the was prevented.

Since the projection 19 is provided at a substantially central position between the two propeller fans 5 and 6, (see FIG. 3),
It does not interfere with the rotation of the propeller fans 5 and 6 and suppresses the increase in ventilation resistance. Further, since the projection 19 and the electrical equipment box 18 are arranged as close as possible, for example, as compared with the case where the reactor 22 is placed on the bottom plate of the heat exchange unit 1 (conventional example), the electrical equipment box 18 extends from the reactor 22. It is possible to shorten the length of the lead wire connected to the internal parts.

[0015]

As described above, according to the present invention, the partition plate for partitioning the inside of the housing into the heat exchange chamber and the machine room,
Since the protrusion protruding to the heat exchange chamber side is provided and the electric component for controlling the operation of the compressor and the like is attached to the protrusion, the electric component can be cooled by using the air in the heat exchange chamber. Therefore, various devices (compressor, refrigerant pipes, etc.) can be arranged without being restricted by the flow of air in the machine room, and the miniaturization of the heat exchange unit can be promoted.

[Brief description of drawings]

FIG. 1 is a perspective view of a heat exchange unit showing an embodiment of the present invention.

2 is a plan view of the heat exchange unit shown in FIG. 1. FIG.

FIG. 3 is a front view of the heat exchange unit shown in FIG.

FIG. 4 is a perspective view of a partition plate of the heat exchange unit shown in FIG.

5 is a lateral cross-sectional view of a main part of the heat exchange unit shown in FIG.

[Explanation of symbols]

 1 Heat Exchange Unit 5, 6 Propeller Fan (Blower) 8 Heat Exchanger 11 Partition Plate 12 Heat Exchange Room 13 Machine Room 17 Compressor 19 Projection 22 Reactor (electrical component)

Front Page Continuation (72) Inventor Takumasa Sato 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Toshio Takashima 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. Within

Claims (1)

[Claims] 1. A housing is divided into a heat exchange chamber and a machine room by a partition plate, and a heat exchanger and a blower are housed in the heat exchange chamber, and a compressor is built in the machine room. In the heat exchange unit in which the heat exchange chamber side surface of the partition plate acts as a guide wall for air, the partition plate is provided with a protrusion projecting toward the heat exchange chamber side, and the protrusion of the compressor or the like is provided. A heat exchange unit that is equipped with electrical components that control operation.