JPH0712817Y2 - Heat exchange unit - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Use The present invention relates to a heat exchange unit in which the inside of a housing is partitioned by a partition plate into a heat exchange chamber and a machine room.

(B) Conventional Technology In recent years, the number of air conditioners that control the power supply frequency supplied to the compressor to match the air conditioning load in the room is increasing.
Japanese Patent Application Laid-Open No. 59-208370 discloses an example of the structure of the outdoor heat exchange unit of such an air conditioner.

In this publication, the inside of the outdoor heat exchange unit is partitioned by a partition plate into a heat exchange chamber and a machine room. This machine room accommodates heat-generating electrical components such as power transistors for controlling the power supply frequency. Therefore, the partition plate is provided with a radiating fin facing the heat exchange chamber, and the above-mentioned electrical component is attached to this radiating fin to cool the electrical component. Further, in this partition plate, a ventilation port is provided above the heat dissipation fins,
Moreover, a draining plate was provided near the ventilation port. The water drain plate prevents water droplets in the heat exchange chamber from entering the ventilation chamber into the machine chamber and guides the air in the machine chamber to the heat exchange chamber through the ventilation port.

(C) Problems to be solved by the invention In the heat exchange unit having such a structure, since the drain plate is provided near the ventilation port, the drain plate makes it difficult for the air in the machine room to flow to the heat exchange chamber. There was a risk that the temperature inside the machine room would rise abnormally.

The present invention is intended to solve the above problems.

(D) Means for Solving the Problem In order to solve the problem, the present invention provides a partition plate for partitioning the inside of the housing into a heat exchange chamber and a machine chamber, and a plurality of heat radiation fins facing the heat exchange chamber. In the attached heat exchange unit, the radiating fins are vertically arranged to form a vertically oriented ventilation path between the fins, and an opening for passing the ventilation path and the machine room is provided at a position higher than the radiating fins. The cover is provided only on the partition plate and the lower surface of the ventilation passage is covered with a cover, and only the upper half of the side surface of the radiating fin on the heat exchange chamber side is covered with a wall surface. The bottom half is open.

(E) Action The cover prevents water droplets sprayed from below the heat radiation fins from entering the ventilation passages between the heat radiation fins. Further, the cover closes the lower surface of the ventilation passage of the radiating fin, covers only the upper half of the side surface of the radiating fin on the heat exchange chamber side with the wall surface, and covers the substantially lower half of the side surface of the radiating fin on the heat exchange chamber side. Since it is opened, almost the lower half of the side surface of the heat radiation fin is opened, so that the ventilation resistance of the ventilation passage formed between the fins is suppressed from increasing. Moreover, since only the upper half of the side surface of the heat radiation chamber on the side of the heat radiation fin is covered with the wall surface and the lower half of the side surface of the heat radiation chamber on the side of the heat radiation fin is opened, the upper half of the heat radiation fin on the high temperature side is opened. The air can be cooled by the air flowing from the machine room, and this air flows downward, so that water drops that have entered the ventilation passage due to the flow of this air do not need to enter the machine room.

(F) Example In FIG. 1, 1 is an outdoor heat exchange unit of a separation type air conditioner, 2 is a bottom plate, 3 is a substantially U-shaped exterior panel attached along the edge of the bottom plate, and the left side A suction port 4 is provided on the front and rear faces, and a power supply service port 5 and a cutout port 6 are provided on the right side face. A mounting piece 7 fixed to the right edge of the bottom plate 2 is located in this cutout 6, and a valve (not shown) is fixed to this mounting piece. A partition plate 8 divides the inside of the unit 1 into a heat exchange chamber on the left side and a machine room on the right side. An opening 9 is provided above the partition plate 8. Further, bent portions 10 are provided on the left and right of the wall surface above the opening 9 so that the wall surface 11 above the opening 9 is projected more than the wall surface 12 below.

A compressor 13 is placed on the bottom plate 2. 14 is this compressor 13
An electrical component plate located above the
15 is tilted diagonally rearward, and the right-side rising piece 16 is tilted diagonally upward. Reference numeral 17 denotes a heat radiating member. A large number of heat radiating fins 18 are vertically cut and raised on the left side surface, and a power transistor module 19 is fixed on the right side surface. The heat dissipation member 17 is attached to the opening 20 of the left rising piece 15 of the electrical component plate 14, the power transistor module 19 is located on the right side of the rising piece 15, and the heat radiation fin 18 is located on the left side. In addition, a terminal terminal board (not shown) is attached to the right-side rising piece 16 of the electrical equipment plate 14 so as to face the power supply service port 5 of the exterior panel 3. Reference numeral 21 is a capacitor, which is erected on the rear part of the electrical component plate 14 and fixed by a band 22. 23 is an auxiliary plate that is erected in front of the electrical component plate 14,
Printed circuit boards 24 are attached to both front and rear surfaces of this plate.

Reference numeral 25 denotes a plate fin type heat exchanger bent in a substantially L shape, which is arranged along the rear edge and the left edge of the bottom plate 2. When the heat exchanger 25 is placed in this manner, the heat exchanger 25
Is along the suction port 4 of the exterior panel 3. 26 is this heat exchanger 25
The blower placed in front of the motor of this blower 26
27 is fixed to a support base 28. The lower end 29 of this support base 28 is fixed to the bottom plate 2. The upper end 30 is engaged with the upper edge of the plate fin type heat exchanger 25 and is fixed to the upper edge of the exterior panel 3. Reference numeral 31 is a front panel that constitutes the front surface and the top surface of the heat exchange unit 1, and a discharge grill 32 is provided on the front surface. A reactor 33 is fixed to the bottom plate 2. 34 is a cover that covers this reactor 33, and its edge 35 is the partition plate 8
Fixed around notch 36 in.

2 and 3 show a state in which the electric component plate 14 is attached to the partition plate 8, 37 is a mounting piece provided on the upper edge of the left rising piece 15 of the electric component plate 14, and 38 is the partition plate 8. A fixing piece 39 provided near the upper edge of the cover is a cover provided on the lower edge of the opening 9 of the partition plate 8 and extends toward the heat exchange chamber 40. Then, while mounting the lower edge 41 of the radiation fin 18 on the cover 39, the mounting plate 37 of the electric component plate 14 is placed on the fixing piece 38 of the partition plate 8 and screwed, and the peripheral edge 42 of the electric component plate 14 is divided into the partition plate. Slope 43 of 8
And the upper side surface 45 of the radiating fin 18 hits the upper wall surface 11 of the partition plate 8. Furthermore, this radiation fin 18
The lower side surface 46 of the above faces the opening 9.

When the heat exchange unit 1 configured in this way is operated,
Due to the rotation of the blower 26, the outdoor air is sucked into the heat exchange unit 1 through the suction port 4 and exchanges heat with the refrigerant flowing through the heat exchanger 25. Then, it is blown out from the discharge grill 32 on the front panel.

At this time, the temperature of the air in the machine room 47 is rising due to heat dissipation from the compressor 13, the condenser 21, and the like. However,
Due to the rotation of the blower 26, the pressure in the heat exchange chamber 40 is higher than that in the machine chamber.
Since it becomes lower than the pressure of 47, the air in the machine room 47 is discharged from the above-mentioned discharge grill 32 through the ventilation passage 48 between the opening 9 and the fins 18 as shown by the solid line arrow in FIG. The number of the ventilation passages 48 increases according to the number of the radiation fins 18, and the cover 39 is applied to the lower ends 41 of the fins 18. Therefore, the left side surface of the ventilation passage 48, that is, the lower side surface 46 of the heat radiation fin 18 is opened to prevent the resistance of the ventilation passage 48 from increasing.

In addition, drain water collected on the bottom plate 2 of the heat exchange chamber 40 and the suction port 4
In addition, rainwater that has entered the heat exchange unit 1 through the discharge grill 32 or the like is scattered in the heat exchange chamber 40 by the rotation of the blower 26. In this case, for example, as indicated by the broken line arrow in FIG. 3, water droplets sprayed from below the heat radiating fin 18 onto the heat radiating fin 18 hit the cover 39 so as not to enter the air passage 48 between the fins 18. Further, as shown by the alternate long and short dash line arrow, the water droplets sprayed onto the heat dissipation fin 18 from diagonally below or from the side of the heat dissipation fin 18 enter the ventilation passage 48 between the fins 18, but the direction in which the water droplet is sprayed on the heat dissipation fin is Since it is obliquely downward or sideways, the water droplets that have entered the ventilation passage 48 between the fins do not climb up so much in this ventilation passage and fall.

In this way, the drain water and water droplets in the heat exchange chamber 40 are opened 9
I don't want to go to the machine room via.

(G) Effect of the Invention As described above, the present invention is a heat exchange unit in which a plurality of radiating fins facing the heat exchange chamber are attached to a partition plate that divides the inside of the housing into a heat exchange chamber and a machine room. In the above, while arranging the heat radiation fins vertically to form a vertical ventilation path between these fins, an opening for passing the ventilation path and the machine room is provided only in the partition plate located higher than the heat radiation fins. A cover is provided to cover the lower surface of the ventilation passage, and only the upper half of the side surface of the radiating fin on the heat exchange chamber side is covered with a wall surface, and the lower half of the side surface of the radiating fin on the heat exchange chamber side is opened. As a result, the cover prevents water droplets sprayed from below the heat radiation fins from entering the ventilation passages between these heat radiation fins, and prevents water droplets from entering the machine room, resulting in poor insulation of electrical components inside the machine room. Can be prevented. Furthermore, the cover closes the lower surface of the ventilation passage of the radiation fin, covers only the upper half of the side surface of the radiation fin on the heat exchange chamber side with the wall surface, and covers the lower half of the side surface of the radiation fin on the heat exchange chamber side. Since it is opened, almost the lower half of the side surface of the heat dissipation fin is opened, suppressing the increase in ventilation resistance of the ventilation passage formed between the fins,
It is possible to prevent the temperature of the air in the machine room from rising, and this makes it possible to store electrical components with low heat resistance in the machine room, thus reducing costs. Moreover, since only the upper half of the side surface of the radiating fin on the heat exchange chamber side is covered with the wall surface and the substantially lower half of the side surface of the radiating fin on the heat exchange chamber side is opened, the upper half with high temperature of the radiating fin is It can be cooled by the air flowing from the machine room, and since this air flows downward, it is possible to prevent the water droplets entering the ventilation passage due to the flow of this air from entering the machine room.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an exploded perspective view of a heat exchange unit, FIG. 2 is a horizontal cross-sectional view of the main part of the unit, and FIG. 3 is a vertical cross-sectional view of the main part of the unit. is there. 1 ... Heat exchange unit, 8 ... Partition plate, 9 ... Opening, 18
...... Radiation fin, 39 ...... Cover, 40 ...... Heat exchange chamber, 47 ...
… Machine room, 48… Ventilation path.

Claims (1)

[Scope of utility model registration request] 1. A heat exchange unit in which a plurality of heat radiation fins facing the heat exchange chamber are attached to a partition plate that divides the inside of the housing into a heat exchange chamber and a machine room. While forming a vertical ventilation path between them, an opening for allowing the ventilation path and the machine room to pass through is provided only in the partition plate located at a position higher than the heat radiation fins, and the lower surface of the ventilation path is covered with a cover. Further, the heat exchange unit is characterized in that only a substantially upper half of a side surface of the radiating fin on the heat exchange chamber side is covered with a wall surface, and a substantially lower half of a side surface of the radiating fin on the heat exchange chamber side is opened.