JP3515206B2 - Refrigerator electrical box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical equipment box for mounting electrical components for controlling a refrigerator such as an air conditioner (air conditioner), and more particularly to an electrical equipment box for a refrigerator installed outdoors. Is.

[0002]

2. Description of the Related Art Conventionally, in a refrigerator such as an air conditioner of this type, for example, Japanese Patent Application No. 5-2 filed by the applicant earlier.
As shown in No. 74302, it was installed in the machine room of the outdoor unit of the air conditioner installed outdoors. Hereinafter, the conventional structure will be described with reference to FIGS. 15 and 16.

In each drawing, reference numeral 100 is an outdoor unit of an air conditioner, and condensers 101, 101 included in a refrigeration cycle are attached to the upper portion of the outdoor unit 100 in a substantially V shape. This outdoor unit 100
A machine room 102 for arranging a compressor and the like (not shown) included in the refrigeration cycle is formed in the inner lower part, and the above-mentioned conventional electrical equipment box 103 is housed in the machine room 102.

Electrical components such as a magnet switch for controlling the operation of the compressor, a relay for controlling other devices of the air conditioner, and a fuse are directly attached to the inner surface of the electrical equipment box 103. Cage, and electrical box 1
A fan motor for ventilation was also installed in 03.

[0005]

As described above, since the electrical components are directly attached to the inner surface of the electrical component box 103 in the prior art,
The assembly is troublesome, and the work of replacing the electrical equipment box at the time of service in the market is extremely complicated.

The electrical equipment box 103 is attached to the outdoor unit 100.
Since it is housed in the machine room 102, the space in the machine room 102 must be expanded, which increases the cost. In particular, since the electrical equipment box 103 becomes an obstacle during maintenance of the compressor and the like, there is a problem that service workability is deteriorated.

Further, the inside of the machine room 102 is in an environment where rainwater or the like is unlikely to enter, and therefore the conventional electrical equipment box 103 should have a relatively loose design with respect to the entry of rainwater or the like. By directly mounting the electrical components on the inner surface of 103, the ventilation performance inside the electrical component box 103 deteriorates, and thus forced ventilation must be performed separately by the fan motor or the like as described above, which also results in a cost increase. It was.

The present invention has been made in order to solve the above-mentioned conventional technical problems, and improves the assembling workability and service workability as well as reducing the cost, and further, the ventilation performance and the water infiltration prevention performance. It is an object of the present invention to provide an electric component box for a refrigerator, which is also improved.

[0009]

According to a first aspect of the present invention, there is provided an electric equipment box for a refrigerator , which is mounted in an outer case of an outdoor unit.
Refrigeration cycle condenser and formed on the top of the outer case
Blower fan installed corresponding to the installed discharge grill
And its fan motor, and the lower part inside the outdoor unit
And a machine room where the compressor of the refrigeration cycle is installed.
Installed in the outdoor unit above the machine room of the refrigerator.
A mounting plate fixed to the inner surface of the electrical equipment box and having electrical components mounted on the surface opposite to the rear surface facing the inner surface. And a plurality of ventilation holes formed on the back surface of the main body, a louver portion that is bent and formed so as to project outward from the upper edge of each ventilation hole, and is attached to the outside of the rear surface of the main body with a space and It is equipped with a rainwater intrusion prevention plate that is closed on both sides and opened on the top and bottom, and the mounting plate has a substantially gate-shaped cross section to form a space between the inner surface and the back surface of the electrical equipment box, and the electrical component with large vibration is mounted on the mounting plate. It is placed in the corner of.

The electric equipment box of the refrigerator according to the invention of claim 2 is an outdoor unit.
Refrigeration cycle installed in the unit exterior case
Condenser and discharge grill formed on the top of the outer case
Blower fan and its fan
And the lower part of the outdoor unit, the refrigeration cycle
Of the refrigerator with a machine room in which the compressor of
It is installed in an outdoor unit above the machine room, and is equipped with electrical components for controlling the refrigerator in the main body.The electrical components are attached to the mounting plate provided in the main body and the rear surface of the main body. A plurality of formed ventilation holes, a louver portion that is bent and formed so as to protrude outward from the upper edge of each ventilation hole, and is attached to the outside of the rear surface of the main body with a space and extends below the main body. Together with the rainwater intrusion prevention plate, which is closed on both sides of the interval and opened at the top and bottom, a lower end bent portion formed at the lower end of the rainwater intrusion prevention plate and located below the interval, and a rear side from the upper end of the rear surface of the main body. The eaves portion located above the rainwater infiltration prevention plate, the upper end bent portion that descends from the tip of the eaves portion to the rear of the rainwater infiltration prevention plate, and the partition plate that vertically partitions the space. There is something.

According to the electric equipment box of the refrigerator of the first aspect of the invention, a mounting plate separate from the main body of the electric equipment box is prepared, and the electric components are attached to the mounting plate and arranged in the main body. As a result, the workability of assembling electrical components is significantly improved. Also, since the mounting plate can be separated when replacing the electrical equipment box, serviceability in the market is further improved.

Further, since the mounting plate has a substantially gate-shaped cross section and a space is formed between the back surface of the mounting plate and the inner surface of the electrical equipment box, the ventilation performance in the electrical equipment box is improved, and the heat generated from the electrical equipment parts is smoothly dissipated. It becomes possible to promote the temperature decrease in the electrical equipment box. In particular, since the mounting plate has a simple structure, the cost of parts can be suppressed, and since the electric components with large vibration are arranged at the corners of the mounting plate with high strength, it is possible to reduce the generation of noise. Is.

Further, a plurality of vent holes formed on the back surface of the main body, a louver portion bent and formed so as to project outward from the upper edge of each vent hole, and attached to the outside of the back surface of the main body at intervals. because and a rain water entering prevention plate sides closed to the was opened and below the interval, the fan motor luck
The outside air that has been sucked by the rotation of the blower fan enters the space between the rainwater infiltration prevention plate and the main body, and then flows into the main body through the ventilation hole to ventilate the inside and then the ventilation hole. From the main body to the rainwater intrusion prevention plate.
Becomes memorial, it can significantly improve the ventilation performance of the electric box body. In particular, since the rainwater intrusion prevention plate and the louver portion of the ventilation hole effectively prevent water from entering the main body, it is possible to mount the electrical equipment box outside the machine room. Therefore, the space in the machine room can be reduced, the cost can be reduced, and the service workability in the machine room can be further improved.

According to the electric equipment box of the refrigerator of the second aspect of the present invention, a mounting plate separate from the main body of the electric equipment box is prepared, and the electric components are attached to the mounting plate and arranged in the main body. Assembly workability such as mounting of electrical components is significantly improved. Further, since the mounting plate can be separated when replacing the electrical equipment box, the serviceability in the market is further improved. Also, a plurality of ventilation holes formed on the back surface of the main body, and a louver portion that is bent and formed so as to project outward from the upper edge of each ventilation hole,
A rainwater intrusion prevention plate that is attached to the outside of the back of the main unit with a gap, extends downward from the main unit, and has both sides of the gap closed to open the top and bottom, and to the lower end of this rainwater intrusion prevention plate. The lower end bent portion that is formed below the gap, the eave portion that protrudes rearward from the upper end of the rear surface of the main body, and is located above the rainwater infiltration prevention plate, and the tip of this eaves portion to the rear of the rainwater infiltration prevention plate. Since the upper end bent portion that descends and the partition plate that divides the space into upper and lower parts are provided, the fan motor
Is driven and the blower fan rotates
The outside air enters the space between the main body of the rainwater infiltration prevention plate and the main body from the bottom bent part of the rainwater infiltration prevention plate and the main body, and flows into the main body from the ventilation hole below the partition plate to ventilate the interior and then from above the vent from the plate to flow out in the gap, on the body
It comes out between the end bent part and the rainwater intrusion prevention plate,
Ventilation performance inside the electrical box can be significantly improved.

In particular, since the rainwater intrusion prevention plate and the lower end bent portion, the eaves portion and the upper end bent portion of the main body, and the louver portion of the ventilation hole effectively prevent water from entering the main body, the electrical equipment box is used as a machine. It can be installed outdoors. Therefore,
The space in the machine room can be reduced, the cost can be reduced, and the service workability in the machine room can be further improved.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is a partially cutaway front view of an outdoor unit 1 of an air conditioner as a refrigerator to which the present invention is applied, FIG. 2 is a partially cutaway side view of the outdoor unit 1, and FIG. 3 is a front view of an electrical equipment box 2. 4 is a side view of the electrical equipment box 2, FIG. 5 is a top view of the electrical equipment box 2, FIG. 6 is a front view of the body 3 of the electrical equipment box 2, FIG. 7 is a side view of the body 3, and FIG. 8 is a top view of the body 3. 9 is a front view of the mounting plate 4, FIG. 10 is a cross-sectional view of the mounting plate 4 mounted on the main body 3, FIG. 11 is a front view of the rainwater intrusion prevention plate 6, and FIG. 12 is a top view of the rainwater intrusion prevention plate 6. 13 is a side view of the rainwater intrusion prevention plate 6, and FIG. 14 is a sectional view taken along the line AA of FIG.

In FIGS. 1 and 2, the exterior case 8 of the outdoor unit 1 includes a condenser 9 included in the refrigeration cycle.
The blower fan 12 and its fan motor 13 are attached in correspondence with the discharge grill 11 formed at the upper end of the outer case 8. A machine room 14 is defined on one side of the lower part of the outdoor unit 1, and a compressor 16 included in the refrigeration cycle is installed in the machine room 14. The electrical equipment box 2 is mounted in the outdoor unit 1 above the machine room 14.

The electrical equipment box 2 is attached to a back plate 3A of the main body 3 and a main plate 3 made of a steel plate having an open front surface, a cover plate 17 made of a rectangular steel plate for opening and closing the front opening of the main plate 3. And a rainwater intrusion prevention plate 6 made of a steel plate.

The main body 3 of the electrical equipment box 2 is in the shape of a rectangular box having an open front surface as shown in FIGS. 6 to 8. The upper and left and right edges of the opening have mounting flanges 21 that project outward. , 21, 21 are formed. Further, holes 22 for wiring and holes 23 for user power supply lines are formed on the bottom surface 3B of the main body 3.

Further, a plurality of slit-shaped ventilation holes 24 ... Are formed in the back surface 3A of the main body 3, and the upper edges of the ventilation holes 24 ... Thus, the louver portions 26 ... Are respectively formed.
The rear portion of the upper surface 3C of the main body 3 further projects rearward from the upper end of the rear surface 3A, and the eaves portion 27 is formed there.
The tip of the eaves portion 27 is bent so as to descend downward, and an upper end bending portion 28 is formed there.

On the other hand, the rainwater intrusion prevention plate 6 has a width substantially equal to the width of the back surface 3A of the main body 3 as shown in FIGS. 11 to 14, and has a longitudinal dimension longer than the back surface 3A. .
The left and right ends and the lower end of the rainwater intrusion prevention plate 6 are bent forward at a right angle, and particularly left and right end bent portions 31, 31 and a lower end bent portion 32 are formed. Also, the left and right bent portions 3
Flange 33, 3 protruding outward at the tip of 1, 31
3 is formed. Further, a partition plate 34 is attached to the substantially central portion of the inner surface (front surface) of the rainwater intrusion prevention plate 6 so as to project leftward and rightward.

The flange 3 of the rainwater intrusion prevention plate 6
The rainwater intrusion prevention plate 6 is fixed to the main body 3 by fixing 3, 33 to the outer surface of the back surface 3A of the main body 3. At this time, a gap G is formed between the rainwater intrusion prevention plate 6 and the back surface 3A of the main body 3 by the size of the left and right end bent portions 31, 31, and the left and right ends of the gap G are the left and right end bent portions 31, It is closed by 31.

The lower part of the rainwater intrusion prevention plate 6 has a rear surface 3A.
And the lower end bent portion 32 of the rainwater intrusion prevention plate 6 is spaced apart from the main body 3 and is positioned below the gap G. . On the other hand, the upper end of the rainwater intrusion prevention plate 6 has an eaves portion 27 of the main body 3.
The upper end bent portion 28 is separated from the rainwater intrusion prevention plate and descends to the rear thereof.

A rectangular plate-shaped mounting plate 4 as shown in FIGS. 9 and 10 is housed and mounted in the main body 3 of the electric equipment box 2. The mounting plate 4 is for mounting a magnet switch 41, a fuse 42, a relay 43, a power supply terminal plate 44, etc., which are electrical components for controlling the compressor 16, the fan motor 13, etc. on the surface 4A. The left and right sides are bent at a right angle to the back surface 4B side and the side surfaces 4C, 4
C is formed, and the cross section is generally a gate shape.
Further, flanges 4D and 4D that project outward are formed at the tips of the side surfaces 4C and 4C.

Then, the magnet switch 41 and the power supply terminal plate 44 are attached to the corners of the surface 4A of the mounting plate 4, and the fuse 42, the relay 43, etc. are attached to the central portion, and then the flanges 4D and 4D of the mounting plate 4 are attached. The mounting plate 4 is fixed to the main body 3 by screwing on the inner surface of the main body 3 of the electrical equipment box 2.

At this time, since the mounting plate 4 has a substantially gate-shaped cross section as described above, a space S opened vertically is formed between the back surface 4B of the mounting plate 4 and the inner surface of the main body 3 in this mounted state. . Therefore, the ventilation performance in the main body 3 of the electrical equipment box 2 is improved, and the above-mentioned electrical components (magnet switch 41, fuse 42, relay 43, or power supply terminal board 44, etc.)
It is possible to smoothly dissipate the heat generated from the inside of the main body 3 and promote the temperature decrease in the main body 3.

In particular, since the mounting plate 4 has a simple structure in which a rectangular plate is simply bent, the cost of parts can be suppressed, and the magnet switch 41 or the like having a large vibration can be installed in the corner portion of the mounting plate 4 having high strength. Since it is arranged, it is possible to reduce the generation of noise. Further, since the mounting plate 4 is a separate body from the main body 3 of the electrical component box 2, it is possible to mount the above-mentioned electrical components to the mounting plate 4 outside the main body 3 and then fix the components to the main body 3 to assemble the electrical components. In addition to significantly improving the serviceability, since the mounting plate 4 can be removed and separated when the electrical equipment box 2 is replaced, the serviceability in the market is further improved.

As shown in FIGS. 1 and 2, the electrical equipment box 2 accommodating the mounting plate 4 to which the electrical components are mounted as described above is as shown in FIGS.
The rear surface 3A (rainwater intrusion prevention plate 6) is on the condenser 9 side, and the cover plate 17 is on the outer case 8 side, and is mounted in the outdoor unit 1 by the flanges 21 ... That is, since the electrical equipment box 2 is attached to the outside of the machine room 14 below, the space of the machine room 14 can be reduced, the cost can be reduced, and the service workability in the machine room 14 is further improved. To do.

When the fan motor 13 is operated and the blower fan 12 rotates, the outside air is exposed to the outdoor unit 1.
After being sucked from one surface of the outer case 8 and air-cooling the condenser 9, it is discharged from the grill 11 at the upper end.

At this time, since the electrical equipment box 2 is located in the flow path of the outside air, the outside air is separated from the lower end bent portion 32 of the rainwater intrusion prevention plate 6 and the main body 3 by a gap G as shown by a broken line arrow in FIG. After entering the inside and ventilating the inside by ventilating the inside of the main body 3 through the ventilation holes 24, ... Below the partition plate 34, the air flows out from the ventilation holes 24 ,. Three
It comes out between the eaves portion 27 and the upper end bent portion 28 and the rainwater intrusion prevention plate 6. Therefore, the ventilation performance inside the main body 3 of the electrical equipment box 2 is significantly improved, and it is not necessary to provide a fan as in the conventional case.

By exposing the electrical equipment box 2 to the outside of the machine room 14, the electrical equipment box 2 is exposed to raindrops entering from the grill 11 or the like. However, the louver portion 26 is formed in the ventilation holes 24, ...
The rainwater intrusion prevention plate 6 is provided on the rear surface of the main body 3 in which the
The rainwater intrusion prevention plate 6 has a lower end bent portion 32 formed at its lower end to prevent splashing of rainwater from below, and the upper surface 3C of the main body 3 has an eaves portion 27 and an upper end bent portion 28. Is formed to prevent rainwater from entering from above, so that water is prevented from entering into the main body 3 from the ventilation holes 24. Therefore, even though the electrical equipment box 2 is attached to the outside of the machine room 14, the failure due to the flooding of the electrical equipment components can be avoided.

[0032]

As described above in detail, according to the invention of claim 1, a mounting plate separate from the main body of the electrical equipment box is prepared, and the electrical components are mounted on the mounting plate and arranged in the main body. Therefore, the workability of assembling the electrical components is significantly improved. Also, since the mounting plate can be separated when replacing the electrical equipment box, serviceability in the market is further improved.

Further, since the mounting plate has a substantially gate-shaped cross section and a space is formed between the back surface of the mounting plate and the inner surface of the electrical equipment box, the ventilation performance in the electrical equipment box is improved, and the heat generated from the electrical equipment parts is smoothly dissipated. It becomes possible to promote the temperature decrease in the electrical equipment box. In particular, since the mounting plate has a simple structure, the cost of parts can be suppressed, and since the electric components with large vibration are arranged at the corners of the mounting plate with high strength, it is possible to reduce the generation of noise. Is.

Further, a plurality of vent holes formed on the rear surface of the main body, louver portions bent and formed to project outward from the upper edge of each vent hole, and attached to the outer surface of the rear surface of the main body at intervals. because and a rain water entering prevention plate sides closed to the was opened and below the interval, the fan motor luck
The outside air that has been sucked by the rotation of the blower fan enters the space between the rainwater infiltration prevention plate and the main body, and then flows into the main body through the ventilation hole to ventilate the inside and then the ventilation hole. From the main body to the rainwater intrusion prevention plate.
Becomes memorial, it can significantly improve the ventilation performance of the electric box body. In particular, since the rainwater intrusion prevention plate and the louver portion of the ventilation hole effectively prevent water from entering the main body, it is possible to mount the electrical equipment box outside the machine room. Therefore, the space in the machine room can be reduced, the cost can be reduced, and the service workability in the machine room can be further improved.

According to the second aspect of the present invention, a mounting plate separate from the main body of the electrical component box is prepared, and the electrical component is mounted on the mounting plate so as to be arranged in the main body. Assembly workability is significantly improved. Further, since the mounting plate can be separated when replacing the electrical equipment box, the serviceability in the market is further improved. In addition, a plurality of ventilation holes formed on the back surface of the main body, louver portions that are bent and formed to project outward from the upper edge of each ventilation hole, and are attached outside the rear surface of the main body at intervals, A rainwater intrusion prevention plate that extends downward and is open at the top and bottom by closing both sides of the interval, and is formed at the lower end of this rainwater intrusion prevention plate,
The lower end bent portion located below the gap, the eave portion protruding rearward from the upper end of the rear surface of the main body, and the eave portion located above the rainwater intrusion prevention plate, and the upper end descending from the tip of this eave portion to the rear of the rainwater infiltration prevention plate. Since it has a bent portion and a partition plate that divides the space into upper and lower parts, the fan motor is operated and the blowing fan is operated.
The outside air sucked by the rotation of the fan enters the space between the rainwater intrusion prevention plate and the main body from the lower end bent part of the rainwater intrusion prevention plate and the main body, and flows into the main body from the ventilation hole below the partition plate. After ventilating the inside, it flows out from the ventilation hole above the partition plate into the above space, and the upper end bent part of the main body and rainwater infiltration
As it comes out from between the prevention plates, it is possible to remarkably improve the ventilation performance inside the electrical equipment box body.

In particular, since the rainwater intrusion prevention plate and the lower bent portion, the eaves and the upper bent portion of the main body, and the louver portion of the ventilation hole effectively prevent water from entering the main body, the electrical equipment box can be used as a machine. It can be installed outdoors. Therefore,
The space in the machine room can be reduced, the cost can be reduced, and the service workability in the machine room can be further improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an outdoor unit of an air conditioner as a refrigerator to which the present invention is applied.

FIG. 2 is a partially cutaway side view of the outdoor unit.

FIG. 3 is a front view of the electrical equipment box of the present invention.

FIG. 4 is a side view of the electrical equipment box of the present invention.

FIG. 5 is a top view of the electrical equipment box of the present invention.

FIG. 6 is a front view of the main body of the electrical equipment box of the present invention.

FIG. 7 is a side view of the main body.

FIG. 8 is a top view of the main body.

FIG. 9 is a front view of a mounting plate.

FIG. 10 is a cross-sectional view of the main body with a mounting plate attached.

FIG. 11 is a front view of a rainwater intrusion prevention plate.

FIG. 12 is a top view of a rainwater intrusion prevention plate.

FIG. 13 is a side view of a rainwater intrusion prevention plate.

14 is a cross-sectional view taken along the line AA of FIG.

FIG. 15 is a vertical sectional front view of a conventional outdoor unit.

FIG. 16 is a vertical sectional side view of a conventional outdoor unit.

[Explanation of symbols]

1 outdoor unit 2 electrical equipment box 3 body 4 Mounting plate 6 Rainwater intrusion prevention plate 24 vents 26 Louver part 27 Eaves 28 Upper Bend 32 Lower end bend 34 Partition 41 magnet switch G interval S space

Claims (2)

(57) [Claims] 1. Mounting in an outer case of an outdoor unit
Refrigeration cycle condenser and the upper end of the outer case
Blower attached to the discharge grill formed on the
A fan and its fan motor, and the inside of the outdoor unit
And the compressor of the refrigeration cycle was installed
A refrigerator equipped with a machine room, the outdoor above the machine room.
Installed in the unit, control the refrigerator in the body
In an electrical equipment box formed by attaching electrical component for use, a mounting plate fixed to an inner surface of the electrical equipment box, the mounting plate having the electrical equipment attached to a surface opposite to a back surface facing the inner surface, and a back surface of the main body. A plurality of vent holes, a louver portion that is bent and formed to project outward from the upper edge of each vent hole, and is attached to the outside of the back surface of the main body with a gap, and both sides of the gap are closed to vertically And a rainwater intrusion prevention plate that is opened to form a space between the inner surface and the back surface of the electrical equipment box with the mounting plate having a substantially gate-shaped cross section, and the electrical component having large vibration is attached to the mounting plate. A refrigerator electrical box characterized by being placed in a corner. 2. An outdoor unit mounted in an outer case
Refrigeration cycle condenser and the upper end of the outer case
Blower attached to the discharge grill formed on the
A fan and its fan motor, and the inside of the outdoor unit
And the compressor of the refrigeration cycle was installed
A refrigerator equipped with a machine room, the outdoor above the machine room.
Installed in the unit, control the refrigerator in the body
In an electrical equipment box formed by attaching electrical component for use , the electrical component is attached, a mounting plate provided in the main body, a plurality of vent holes formed in the back surface of the main body,
A louver portion that is bent and formed to project outward from the upper edge of each vent hole, and is attached to the outer side of the back surface of the main body with a gap, and extends below the main body, and both sides of the gap are A rainwater intrusion prevention plate that is closed to open the top and bottom,
A lower end bent portion which is formed at a lower end of the rainwater intrusion prevention plate, is located below the interval, and an eave portion which projects rearward from the upper end of the main body rear surface and is located above the rainwater intrusion prevention plate,
An electrical equipment box comprising an upper end bent portion that descends from the tip of the eaves portion to the rear of the rainwater intrusion prevention plate, and a partition plate that partitions the space into upper and lower parts.