JPH09292141A - Outdoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a short-circuit of a reactor, by a method wherein a dripping prevention eaves which is placed above the reactor to cover the reactor is fixedly attached to a partition plate so that it becomes possible to prevent a dewing water condensed on a surface of a suction pipe from dripping on the reactor. SOLUTION: A dripping prevention eaves 19 is disposed above a reactor 8 so as to cover the reactor 8. The dripping prevention eaves 19 is fixedly fastened to a partition wall together with a reactor cover 9 by means of a bolt 16 which passes through a bolt aperture 20. During an operation of an air conditioning apparatus, as a refrigerant gas of a low temperature passes through a suction pipe 18, a dewing water may be condensed on the surface of the suction pipe 18. Such a dewing water drips on the dripping prevention eaves 19 and flows down along an upper surface of the dripping prevention eaves 19 and falls on a position remote from the reactor 8. Accordingly, it becomes possible to prevent the dewing water from dripping on the reactor 8 to wet the reactor 8 so that any trouble such as a short-circuit of the reactor 8 can be prevented.

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)
Is a schematic cross-sectional view taken along the line BB of (A), (C) is a schematic longitudinal sectional view taken along the line C-C of (A), (D) is a perspective view of the bracket, and (E) ) Is a perspective view of the reactor cover, and (F) is an enlarged sectional view of the vicinity of the reactor.

The inside of the casing 1 of the outdoor unit 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 machine room 3, an inverter-driven compressor 5,
A control box 6, an accumulator 7, a reactor 8 for an inverter, a four-way valve 19, a suction pipe 18 and other refrigerant pipes 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.

As shown in FIG. 4 (E), the reactor cover 9 is inserted from the machine chamber 3 into the opening 31 provided in the lower portion of the partition plate 2 so as to project into the heat exchange chamber 4, and the upper portion thereof is It is fastened to the partition plate 2 by screws 16. As shown in FIG. 4 on the base plate 1d on the machine room 3 side covered with the reactor cover 9.
A bracket 13 having a U-shaped cross section shown in (D) is attached.

The reactor 8 is fixed on the bracket 13 via its mounting plate 81, and a cooling air intake 12 is formed in the base plate 1d below the bracket 13.

Then, when the air conditioner is in operation, as shown in FIG.
As shown in FIG. 3, the outside air is sucked into the machine room 3 through the cooling air mounting port 12 and the openings 14 formed on both sides of the bracket 13
It is cooled in the course of passing through both sides of the reactor 8 via the nozzles 15 and 15.

Next, as shown in FIG. 4 (A), after cooling the compressor 5, accumulator 7, etc. in the process of flowing them around, they are formed in the control box 6 on the lower right side thereof. After cooling them by flowing around the heat generating devices such as power transistors and capacitors housed in the control box 6 from the inlet 6A, the air outlet 6B formed on the upper left side surface of the control box 6 It is blown out into the heat exchange chamber 4 through and is sucked into the fan 10A.

[0011]

In the above conventional air conditioner, when operating, the condensed water that has condensed on the surface of the suction pipe 18 through which the low temperature gas refrigerant flows drops to wet the reactor 8 and There was a risk of causing an accident such as a short circuit.

Further, the cooling air sucked into the machine room 3 from the cooling air intake 12 collides with the bracket 13 and is branched into two parts, most of which are openings 15 on the side of the machine room 3 with less flow resistance. However, there is a problem that the reactor 8 cannot be cooled sufficiently because the rest passes through the opening 14.

Further, when the reactor 8 is inspected, repaired or replaced, the reactor cover 9 is fitted and attached from the machine room 3 side, so that the reactor cover 9 remains attached to the base plate 1d. Since it is impossible to remove 9 and the partition plate 2 must be removed, there is a problem that it takes a lot of time and effort to attach and detach the reactor cover 9.

[0014]

The present invention has been invented in order to solve the above-mentioned problems, and the gist of the first invention is that a heat exchange chamber and a machine are provided by a partition plate inside the container casing. An air conditioner in which a reactor cover for projecting into the heat exchange chamber is provided below the partition plate, and a reactor for inverter is installed on the base plate on the machine room side covered with the reactor cover. The outdoor unit of the air conditioner, wherein the drip-proof eaves covering the upper part of the reactor is fixed to the partition plate.

However, the condensed water that has condensed on the surface of the suction pipe is dropped on the drip-proof eaves, flows down on the upper surface thereof, and drops to a place apart from the reactor.

The gist of the second invention is that the inside of the container is partitioned by a partition plate into a heat exchange chamber and a machine room, and a reactor cover projecting into the heat exchange chamber is provided below the partition plate, and this reactor is provided. In the outdoor unit of the air conditioner, which installs the reactor for the inverter through the bracket on the base plate on the machine room side covered with the cover, and provides the cooling air intake port on the base plate under the bracket,
The outdoor unit of an air conditioner is characterized in that a portion of the bracket facing the machine room is closed and cooling air flowing in from the cooling air inlet is circulated along the reactor cover.

Thus, the cooling air flowing in from the cooling air inlet cools the reactor sufficiently while flowing along the reactor cover.

The gist of the third invention is that the inside of the container is partitioned by a partition plate into a heat exchange chamber and a machine room, and a reactor cover projecting into the heat exchange chamber is provided below the partition plate, and the reactor cover is provided. In an outdoor unit of an air conditioner in which a reactor for an inverter is installed on a base plate on the machine room side covered with a cover, the reactor cover is provided in an opening provided at a lower portion of the partition plate. The outdoor unit of the air conditioner is characterized in that the reactor cover can be deformed and inserted from the side, and a pair of locking projections for sandwiching the partition plate is formed in the reactor cover at the insertion position.

However, when the reactor cover is deformed and inserted into the opening from the heat exchange chamber side and the deformation is restored at the insertion position, the pair of locking projections sandwiches the partition plate, whereby the reactor cover is partitioned. It is fixed to the board.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention is shown in FIG. A drip-proof eave 19 covering the upper part of the reactor 8 is fixed to the partition plate 2 by co-tightening together with the reactor cover 9 by a bolt 16 penetrating a bolt hole 20 in the upper part thereof. Other configurations are the same as those of the conventional one shown in FIG. 4, and corresponding members are designated by the same reference numerals and the description thereof is omitted.

When the air conditioner is in operation, however, when the low-temperature refrigerant gas flows through the suction pipe 18 to cause dew condensation on the surface of the suction pipe 18, the condensed water drops on the drip-proof eaves 19. It flows down on the upper surface and falls to a position away from the reactor 8. Therefore, since the condensed water does not splash on the reactor 8 and wet it, an accident such as a short circuit of the reactor 8 can be prevented.

A second embodiment of the invention is shown in FIG. A portion of the bracket 13 having a U-shaped cross section facing the machine room 3 side is closed by a shield plate 21. FIG. 4 shows another configuration.
The same reference numerals are given to corresponding members, and description thereof will be omitted.

When the air conditioner is in operation, however, all of the cooling air sucked from the cooling air intake 12 is in the bracket.
The air flows through the opening 14 of the reactor cover 9 on the side of the reactor cover 9 and flows along the reactor cover 9, so that the reactor 8 is sufficiently cooled by this air.

A third embodiment of the present invention is shown in FIG. The reactor cover 9 is made of an elastic material such as plastic, and on both side walls 37 thereof, locking projections 33 having a triangular cross-section are projectingly provided at the lower portions of the front ends thereof, and at predetermined intervals, that is, of the partition plate 2. A strip-shaped locking projection 32 is provided in the middle of the plate with a space slightly larger than the plate thickness. A protrusion 34 is provided at the center of the front surface of the upper flange 38.

However, when the reactor cover 9 is attached, the reactor cover 9 is tilted so that the upper flange 38 of the reactor cover 9 is formed in the lower portion of the partition plate 31 as shown by the broken line in FIG. 3 (C). Inserted from the side of the heat exchange chamber 4, the front portions of both side walls 37 of the reactor cover 9 are pressed and deformed from both sides as shown by the black arrow in FIG. Pull out the protrusions 33, 33 forward beyond the opening 31.

Then, when the pressure is released to restore the original shape, the front portions of the side walls 37 of the reactor cover 9 are positioned in front of the opening 31, as shown in FIGS. 3 (A) and 3 (D). Then, the partition plate 2 is sandwiched between the locking projections 33, 33 and the locking projections 32, 32, and the rear surface of the upper flange 38 contacts the front surface of the partition plate 2.

Then, as shown in FIG. 3 (D), the screw 35 is penetrated from the heat exchange chamber 4 side through the partition plate 2 and the upper flange 38 to be screwed into the projection 34 so that the reactor cover 9 is separated from the partition plate 2. Fixed to.

When the reactor cover 9 is to be removed, it is removed in the reverse order of the above. Other configurations and operations are similar to those of the conventional one shown in FIG. 4, and corresponding members are designated by the same reference numerals and the description thereof is omitted.

Then, the reactor cover 9 is provided in the heat exchange chamber 4
Since it can be attached or detached from the side, it is not necessary to remove the partition plate 2 even if the compressor 5 is installed close to the partition plate 2.

[0030]

According to the first aspect of the present invention,
Since the drip-proof eaves covering the upper part of the reactor was fixed to the partition plate, the dew condensation water that had condensed on the surface of the suction pipe dropped on the drip-proof eaves and flowed down to the upper surface and fell away from the reactor. It does not get wet with dew condensation water, and therefore it is possible to prevent an accident such as a short circuit.

In the second aspect of the present invention, since the portion of the bracket facing the machine room is closed, all the cooling air flowing in from the cooling air inlet passes through the opening of the bracket on the reactor cover side. Since it flows along the reactor cover, the reactor can be cooled sufficiently.

According to the third aspect of the present invention, the reactor cover can be deformably inserted into the opening provided in the lower portion of the partition plate from the heat exchange chamber side, and the partition plate is inserted into the reactor cover at the insertion position. Since a pair of locking protrusions for sandwiching the reactor is formed, the reactor cover can be attached or detached from the heat exchange chamber side, and therefore even if the compressor is installed close to the partition plate, it is necessary to remove the partition plate. Since it is eliminated, inspection, repair, and replacement of the reactor can be performed easily and quickly.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention, (A) is an enlarged cross-sectional view of the vicinity of a reactor, and (B) is a perspective view of a drip-proof eaves.

FIG. 2 shows a second embodiment of the present invention, (A) is an enlarged cross-sectional view of the vicinity of the reactor, and (B) is a perspective view of a bracket.

FIG. 3 shows a third embodiment of the present invention, (A) is a perspective view showing a fixed state of a reactor cover, (B) is an exploded perspective view,
(C) is a longitudinal sectional view showing a fixed state, and (D) is a sectional view taken along the line D-D of (C).

FIG. 4 shows an outdoor unit of a conventional air conditioner, (A)
Is a partially broken schematic front view, (B) is BB of (A)
A schematic cross-sectional view taken along the line, (C) is a schematic vertical cross-sectional view taken along the line C-C of (A), (D) is a perspective view of the bracket, (E) is a perspective view of the reactor cover, (F) is an enlarged sectional view near the reactor.

[Explanation of symbols]

 1 Instrument Cabinet 2 Partition Plate 3 Machine Room 4 Heat Exchange Room 9 Reactor Cover 8 Reactor 1d Base Plate 13 Bracket 12 Cooling Air Inlet 19 Drip Eaves

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eizo Takasu 1 at 60 Kyutansho, Iwatsuka-cho, Nakamura-ku, Nagoya City Nakaryo Engineering Co., Ltd.

Claims (3)

[Claims] 1. A partition wall divides the interior of the housing into a heat exchange chamber and a machine room, and a reactor cover projecting into the heat exchange chamber is provided under the partition plate, and the machine room side covered with the reactor cover. In an outdoor unit of an air conditioner in which a reactor for an inverter is installed on a base plate of, an outdoor unit of an air conditioner characterized in that a drip-proof eaves covering the upper part of the reactor is fixed to the partition plate. . 2. The inside of the container is partitioned by a partition plate into a heat exchange chamber and a machine room, and a reactor cover protruding to the heat exchange chamber is provided below the partition plate, and the machine room side covered with the reactor cover. In the outdoor unit of the air conditioner, in which the reactor for the inverter is installed on the base plate of the bracket through the bracket, and the cooling air intake is provided in the base plate at the lower part of the bracket, a surface facing the machine room of the bracket is provided. An outdoor unit for an air conditioner, characterized in that a portion to be closed is closed, and cooling air that has flowed in from the cooling air inlet is made to flow along the reactor cover. 3. A heat exchange chamber and a machine room are partitioned from each other by a partition plate inside the housing, and a reactor cover protruding to the heat exchange chamber is provided below the partition plate, and the machine room side covered with the reactor cover. In an outdoor unit of an air conditioner in which a reactor for an inverter is installed on a base plate of, the reactor cover can be deformably inserted into the opening provided in the lower portion of the partition plate from the heat exchange chamber side, and An outdoor unit for an air conditioner, characterized in that a pair of locking projections for sandwiching the partition plate is formed in the reactor cover at its insertion position.