JPH0719531A - Outdoor unit of air conditioner - Google Patents

Abstract

PURPOSE:To facilitate the maintenance and reduce the noise relating to the outdoor unit with an electric box above a machine chamber of an air conditioner and keep out heat, etc., so as to make the controller maintain reliability by placing a soundproof board at the underside of the electric box. CONSTITUTION:In the machine chamber 3 there are provided in its lower part a lower soundproof board 9 between a bottom plate 8 and the machine chamber 3, at the underside of an electric box 4 a flat plate 13 fixed to the underside, and at the two lateral sides of the flat plate 13 a guide 15 consisting of a pair of guide plates 14, 14 each of which has the shape of letter I, in section and guides and holds an upper soundproof board 16. Into the pair of guide plates 14, 14 of the guide 15 a flat board-shaped upper soundproof board 16 is inserted and held therein as a means of reducing the noise from the upper part of the machine chamber 3. This constitution makes the position of attachment of the upper soundproof board 16 always constant and admits of no gap against a side soundproof board 7 which otherwise may arise from an error in putting parts together or the like, so that a reduction in noise can be achieved on the hand and it becomes easy to set the upper soundproof board 16 in the assembling on the other hand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit for an air conditioner, and more specifically, to improve soundproofing, improve an electrical equipment box,
And an outdoor unit of an air conditioner in which a heat dissipation plate of a control device is improved.

[0002]

2. Description of the Related Art In a conventional outdoor unit for an air conditioner, as shown in FIG. 4, a heat exchange chamber 1 having a blower 2 is provided.
Is provided, and a machine room 3 for accommodating a compressor and the like is arranged next to the machine room 3. Above the machine room 3, a controller 5 is installed.
Also, an electrical equipment box 4 that houses the electrical equipment components 6 and the like is provided.

By the way, since the machine room 3 is internally provided with mechanical parts such as a compressor, noise generated from the machine room 3 may be significant. To suppress this noise,
A soundproof plate is installed. That is, the side soundproof plate 7 is provided around the side of the machine room 3 so as to enclose the machine room 3, and below the machine room 3, between the bottom plate 8 and the machine room 3, there is a lower part. A soundproof plate 9 is provided, and an upper soundproof plate 10 is provided on the upper side of the machine room 3 between the electrical equipment box 4 and the machine room 3. With such three soundproof plates, the machine room 3
The noise generated from the outside is suppressed.

[0004]

However, in the outdoor unit of the conventional air conditioner as shown in FIG. 4, the above-mentioned upper soundproof plate 10 is simply placed on the upper side of the machine room 3. There wasn't. Therefore, if there is an error in assembling the upper soundproofing plate 10, a gap may occur between the upper soundproofing plate 10 and the side soundproofing plate 7, and as a result, noise may leak. Further, in order to prevent such a gap from occurring, it is conceivable to increase the size of the upper soundproofing plate 10. However, in this case, a new problem such that the assembling property is deteriorated occurs. Further, the electrical equipment box 4 is provided with a notch 11 at the bottom for mounting electrical components, and heat, moisture, etc. enter from the machine room 3 through the notch 11 and the controller 5, etc. However, there is also a problem in that the reliability of the controller 5 and the like is reduced as a result.

As a conventional structure of the above-mentioned electrical equipment box, although not particularly shown, an electrical equipment substrate such as electric parts is arranged on the rear side of the electric equipment box and a capacitor is arranged on the front side of the electric equipment box. There is a type in which a capacitor is arranged on the rear side of the electrical equipment box and a board mounting plate on which an electrical equipment board is mounted is arranged on the front side of the electrical equipment box.

In the former type of electrical equipment box, the electrical equipment substrate is taken out from a narrow space between the back plate of the electrical equipment box and the capacitor at the time of maintenance. At this time, the taking out work is complicated, and the capacitor is attached to the capacitor. There is also the danger of touching. Further, in the latter type of electrical equipment box, a board mounting plate and the like are required, so that there are problems that the number of parts is large, the assembling property is poor, and the production cost rises.

Further, IC parts such as a giant transistor and a rectifier are provided as a control device provided in the above-mentioned electrical equipment box.
Since the C components generate considerable heat, they are also provided with a heat sink.

Conventionally, such a heat radiating plate is usually formed of an extrusion-molded product, and its cross-sectional shape is limited to a constant value. There are few. Therefore, IC
In order to obtain a sufficient amount of heat generated from the components, the size of the heat sink has to be increased, and it is difficult to make the heat sink compact.

Further, the IC components such as the above-mentioned giant transistor are fixed to the heat dissipation plate, and the heat dissipation plate is also fixed to the electrical equipment box. In this case, when the heat sink is molded from the extruded product as described above, the mounting seat for the IC component needs to be formed by post-processing, for example, cutting, after the extrusion molding, and It is necessary to form the attachment part of. As a result, there is a problem that the manufacturing cost rises.
Moreover, since the processing of the heat sink is also restricted, the shape of the mounting seat and the mounting portion is also restricted, and these can only be mounted by screwing, and as a result, the number of parts of the heat sink is reduced. This is increasing, and another rise in cost is incurred.

The object of the present invention was made in view of the above-mentioned circumstances. Firstly, the soundproof plate is easily assembled to improve the maintainability, and at the same time, due to an assembly error or the like. To reduce the noise, effectively prevent the heat from entering the electrical equipment box, and maintain the reliability of the controller. Secondly, the maintainability of the electrical equipment box is improved. However, the number of parts is reduced and the assembling is improved.
Thirdly, the production cost can be reduced, and thirdly, the heat dissipation plate can be made compact for the control device of the electrical equipment box while increasing the heat dissipation area to improve the heat dissipation efficiency. It is an object of the present invention to provide an outdoor unit for an air conditioner in which mounting seats for IC parts and the like are integrally formed to reduce the number of parts and reduce cost.

[0011]

According to a first aspect of the present invention, the inside of the outdoor unit main body is divided into a heat exchange chamber accommodating an outdoor heat exchanger and a blower, and a machine room accommodating a compressor on the bottom surface. In addition, in the outdoor unit of the air conditioner in which the electrical equipment box is arranged in the upper part of the machine room, the soundproof plate is held and formed on the lower surface of the electrical equipment box.

According to a second aspect of the present invention, the inside of the outdoor unit main body is divided into a heat exchange chamber accommodating the outdoor heat exchanger and the blower, and a machine room accommodating the compressor on the bottom surface, and at the top of the machine room. In the outdoor unit of the air conditioner in which the electrical equipment box is arranged, the electrical equipment box is arranged on the rear surface to store the electrical components such as capacitors, and the front surface to cover the front of the electrical equipment storage area. It is characterized in that it is integrally formed with a board mounting portion for mounting an electric board.

Further, according to a third aspect of the present invention, the inside of the outdoor unit main body is provided with a heat exchange chamber accommodating an outdoor heat exchanger and a blower,
While partitioning into a machine room that houses a compressor on the bottom,
In an outdoor unit of an air conditioner in which an electrical equipment box is placed in the upper part of the machine room, the electrical equipment box forms a heat dissipation plate for electrical parts that require heat dissipation in the part facing the heat exchange chamber, and the heat dissipation of this heat dissipation plate On the side surface, a plurality of main fins extending in a predetermined direction and a plurality of sub-fins that intersect the main fins and extend a shorter distance than the main fins are formed, and on the opposite surface of the heat sink, mounting seats for electrical components are formed. It is characterized by having done.

[0014]

According to the present invention, since the soundproof plate is held and formed on the lower surface of the electrical equipment box, the mounting position of the soundproof plate is always constant, a gap due to an assembly error is eliminated, and noise is reduced. . Further, the soundproof plate is easily assembled, and the maintainability is improved. Further, since the holding plate is held and formed on the lower surface of the electrical equipment box, invasion of heat or the like into the electrical equipment box through the notch is effectively prevented, and the reliability of the controller or the like is maintained.

According to a second aspect of the present invention, the electrical component box integrally includes an electrical component housing portion for housing electrical components such as capacitors, and a board mounting portion for covering the front surface of the electrical component housing portion and mounting the electrical component board on the front surface. Since it is configured, the electrical component board can be removed from the front side of the electrical component box, and the maintainability is improved. At the same time, since the board mounting portion is integrally formed with the electric component storage portion, the number of components is reduced, the assembling property is improved, and the production cost is reduced.

According to the present invention, on the heat radiation side of the heat radiation plate, a plurality of main fins extending in a predetermined direction and sub fins intersecting the main fins and extending a shorter distance than the main fins are formed. The amount of heat radiation is large relative to the ratio of. Therefore, the heat dissipation area can be increased and the heat dissipation efficiency can be improved, while the heat dissipation plate can be made compact.

Further, since a mounting seat for electric parts is integrally formed on the opposite side of the heat radiation plate from the heat radiation side,
It is not necessary to form a mounting seat for electrical components by post-processing as in the conventional case. Therefore, the number of parts can be reduced and the cost can be reduced as compared with the conventional case.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An outdoor unit for an air conditioner according to an embodiment of the present invention will be described below with reference to the drawings. 1 and 2
1 shows an outdoor unit of an air conditioner according to a first embodiment of the present invention, FIG. 1 is a perspective view of an outdoor unit of an air conditioner according to the first embodiment, and FIG. , Figure 1
2 is a schematic plan sectional view of an outdoor unit of the air conditioner shown in FIG. The same members as those in the conventional example shown in FIG.

As shown in FIGS. 1 and 2, also in this embodiment, the heat exchange chamber 1 having the blower 2 and the outdoor heat exchanger 12.
Is provided, and the machine room 3 for accommodating the compressor 13 and the like is arranged next to this. A partition member 18 is arranged between the heat exchange chamber 1 and the machine room 3. Above the machine room 3, an electric equipment box 4 in which a controller 5, electric equipment parts 6 and the like are housed is provided. Further, a cutout 11 for mounting the electrical component 6 and the like is provided on the bottom of the electrical equipment box 11.

Further, in order to suppress noise in the machine room 3, a side soundproof plate 7 is provided around the side of the machine room 3 so as to enclose the machine room 3. A lower soundproof plate 9 is provided between the bottom plate 8 and the machine room 3.

Further, on the lower surface of the electrical equipment box 4, a flat plate portion 13 fixed to the lower surface and an upper soundproof plate 16 (soundproof plate) provided on both sides of the flat plate portion 13 and described later are guided and held. A guide 15 including a pair of guide portions 14 having an L-shaped cross section is provided. A flat upper soundproof plate 16 for reducing noise above the machine room 3 is inserted and held in the pair of guide portions 14, 14 of the guide 15.

With this construction, in the present embodiment, the mounting position of the upper soundproofing plate 16 is always constant, there is no gap between the upper soundproofing plate 16 and the side soundproofing plate 7 due to an assembly error, etc., and noise is reduced. Is planned. Further, the upper soundproof plate 16 is easily assembled, and the maintainability is improved. Further, since the upper holding plate 16 is held on the lower side of the electrical equipment box 4, heat and the like can be effectively prevented from entering the electrical equipment box 4 through the notch 11, and the reliability of the controller 5 and the like can be improved. Is maintained.

FIG. 3 is a cutaway perspective view of the electrical equipment box of the outdoor unit according to the modification of the first embodiment. In this modification, the upper soundproofing plate 16 is fixed and held on the bottom surface of the electrical equipment box 4 by fixing claws 17 and 17 extending from the notches 11 and 11 on the bottom surface. Therefore, similarly to the first embodiment, the upper soundproof plate 16 can be easily attached, the error of the upper soundproof plate 16 can be eliminated, the noise can be reduced, and the heat to the electrical equipment box 4 via the notch 11 can be reduced. Etc. are prevented from entering.

Next, an outdoor unit for an air conditioner according to a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. The electrical equipment box 20 provided in the outdoor unit according to the present embodiment is configured such that an electrical equipment substrate 21 for electric components, a capacitor 22 and the like are internally mounted. The electrical equipment box 20 has a plate-shaped board mounting portion 23 arranged on the front side of the electrical equipment board 21 to which the electrical equipment board 21 is attached, and a box-shaped electrical component housing that is arranged on the rear side of the electrical equipment box 20 and houses the capacitors 22 and the like. And the board mounting portion 2
3 and the electric component storage section 24 are integrally molded. Moreover, the board mounting portion 23 is configured to cover the front surface of the electrical component storage portion 24. Note that FIG. 6 shows the board mounting portion 2
3 and the electric component storage portion 24 are shown separately, and they are not separately configured.

That is, as shown in FIG. 6, the electric component housing portion 24 is composed of a bottom portion 25 and three side wall portions 26, 27 and 28 which are raised from the bottom portion 25. Although not particularly shown, the bottom portion 25 has a notch or the like for attaching the capacitor 22 or the like. On the other hand, the board mounting portion 23 is formed in a flat plate shape as a whole, but flanges 29, 30 and 31 are formed on the upper and side edges thereof. Further, a pair of leg portions 32, 32 are formed below the board mounting portion 23, and although they seem to be separated in FIG. 6, these leg portions 32, 32 are
It is connected to the bottom portion 25 of the electric component storage portion 24, and is bent at this portion when the board mounting portion 23 and the electric component storage portion 24 are molded.

After being molded in this way, the electrical equipment substrate 21 is attached to the substrate attachment portion 23 of the electrical equipment box 20. Although not particularly shown, the attaching means is, for example, a screw stopper.

In this embodiment, because of this construction, the electric component board 21 can be removed from the front side of the electric component box 20, and the maintainability is improved. At the same time, since the board mounting portion 23 is integrally molded with the electrical equipment box 20, the number of parts is reduced, the assemblability is improved, and the production cost is reduced.

Next, an outdoor unit for an air conditioner according to a third embodiment of the present invention will be described with reference to FIGS. 7 to 11. As shown in FIG. 7, in the outdoor unit according to the present embodiment, as in the first embodiment, the heat exchange chamber 1 having the blower 2 and the outdoor heat exchanger 12 is provided, and the compression unit is provided next to the heat exchange chamber 1. A machine room 3 that houses the machine 13 and the like is arranged. A heater unit 41 having a combustor 42 is arranged above the heat exchange chamber 1, and an electrical equipment box 4 having a controller 5 and the like therein is provided above the machine chamber 3.

As shown in FIGS. 8A and 8B, in this electrical equipment box 4, a condenser 43 is arranged so as to face the controller 5. Further, a heat radiating plate (heat sink) 50 is provided at the inclined portion on the left side of FIG.
A giant transistor 44, a sensor 45, and a rectifier 46 are attached to the heat dissipation plate 50. This mounting method will be described later.

This heat sink 50 is shown in FIGS. 9 (a) and 9 (b).
As shown in (c) and (d), it has a rectangular base 51, and a plurality of main fins 52 and a plurality of sub-fins 53 raised from the base 51 are provided on the heat dissipation surface side of the base 51. And are provided. The main fin 2 extends continuously in the vertical direction of FIG. 9A, and the sub-fin 53 extends laterally from the main fin 52 so as to be substantially orthogonal to the main fin 52. ,
The main fin 52 and the sub fin 53 are formed in a substantially cross shape in a plan view. An example of a method of manufacturing such a heat dissipation plate 50 is integral molding by casting.

Next, on the side opposite to the heat radiation surface of the heat radiation plate 50,
Respective mounting seats for the giant transistor 44, the sensor 45, and the rectifier 46 are formed. That is, a rectangular first mounting recess 54 corresponding to the mounting of the giant transistor 44 is formed on the side opposite to the heat radiating surface of the heat radiating plate 50, and inside the first mounting recess 54. A fixing hole 55, such as a screw, for fixing the giant transistor 44 is formed in this. The thickness of the first mounting recess 54 is
As shown in FIG. 9B, it is thinner than the general portion and the dimension L
₁ , so that the first mounting recess 54 is configured to have a predetermined depth. As a result, the contact area of the giant transistor 44 with the heat dissipation plate 50 is increased, and heat dissipation is efficiently performed.

Further, a second mounting recess 56 having a shape corresponding to the rectifier 46 is formed on the side opposite to the heat radiating surface of the heat radiating plate 50 for mounting the rectifier 46. In 56, this is a rectifier 46
A fixing hole 57 such as a screw for fixing is formed. Also in this case, the second mounting recess 56 is formed to have a dimension L ₂ that is thinner than the general portion as shown in FIG. 9B.
Thereby, the second mounting recess 56 is configured to have a predetermined depth, and as a result, the rectifier 46 is formed.
The contact area with the heat radiating plate 50 is increased so that heat is efficiently radiated.

Further, a mounting portion 58 for the sensor 45 is formed on the side opposite to the heat radiating surface of the heat radiating plate 50, and a mounting flange 59 is formed in the mounting portion 58 with a gap. Therefore, simply inserting the sensor 45 into the inside of the mounting flange 59 at the mounting portion 58
The sensor 45 is attached to the heat sink 50. This simplifies the mounting of the sensor 45.

Further, as shown in FIGS. 9C and 11, on the side opposite to the heat radiating surface of the heat radiating plate 50, adjacent to the first recess 54 for the giant transistor 44, the ventilation hole 6 is formed.
0s are arranged in parallel, and the ventilation holes 60 are provided with flanges 61 at regular intervals. As a result, the radiator plate 50 is directly cooled by the wind generated by the blower 2, and the controller 5 and the like inside the electrical equipment box 4 are also cooled by the wind that enters through the ventilation holes 60.

Above the base 51 of the heat sink 50,
A hole 62 for mounting the heat dissipation plate 50 is formed.

10A and 10B, the first mounting recess 54, the second mounting recess 56, and the mounting portion 58 as described above.
Etc., the state in which the giant transistor 44, the rectifier 46, and the sensor 45 are attached is shown.

As described above, in this embodiment, since the heat dissipation plate 50 is formed in a substantially cross shape in plan view and is composed of the in-fins 52 and the sub-fins 53, the size of the heat dissipation plate 50 (L, W in FIG. 9) is set. The amount of heat radiation is large relative to the ratio. Therefore, the dimensions (L and W in FIG. 9) of the heat dissipation plate 50 are reduced while the heat dissipation area is increased and the heat dissipation efficiency is improved, and the size thereof can be made compact.

Further, the first mounting recess 54 and the second mounting recess 56 are configured to have a predetermined depth, thereby increasing the contact area of the giant transistor 44 and the rectifier 46 with the heat sink 50. The heat dissipation efficiency is improved. Further, since the sensor 45 is attached to the heat dissipation plate 50 only by inserting the sensor 45 into the inside of the attachment flange 59 with the attachment portion 58, the sensor 45 is easily attached. Furthermore, as described above, the controller 5 and the like inside the electrical equipment box 4 are also cooled by the wind of the blower 2 that enters through the ventilation holes 60, so this embodiment can also be applied to an electric heat pump air conditioner and the like. .

As described above, in the present embodiment, the heat dissipation efficiency is increased, the heat dissipation plate is made compact, and the heat dissipation contact area is made large. Therefore, the heat dissipation efficiency is improved, and further, the electricity consumption is improved. Since the mounting seats for the parts are integrally formed, the number of parts can be reduced and the cost can be reduced.

The present invention is not limited to the above-described embodiment, but can be modified in various ways.

[0041]

As described above, according to claim 1 of the present invention, since the soundproof plate is held and formed on the lower surface of the electrical equipment box,
The mounting position of the upper soundproofing plate is always fixed, and there is no gap due to an assembly error or the like, so that noise reduction is achieved. Further, the soundproof plate is easily assembled, and the maintainability is improved. Further, since the holding plate is held and formed on the lower surface of the electrical equipment box, invasion of heat or the like into the electrical equipment box through the notch is effectively prevented, and the reliability of the controller or the like is maintained.

According to a second aspect of the present invention, the electrical equipment box is integrally formed of an electrical component housing portion for housing electrical components and a board mounting portion for covering the front surface of the electrical component housing portion and mounting the electrical equipment substrate on the front surface. Therefore, the electrical component board can be removed from the front side of the electrical component box, and the maintainability is improved. At the same time, since the board mounting portion is integrally formed with the electric component storage portion, the number of components is reduced, the assembling property is improved, and the production cost is reduced.

In the third aspect of the present invention, since the plurality of main fins extending in the predetermined direction and the sub-fins that intersect the main fins and extend a shorter distance than the main fins are formed on the heat radiation side of the heat radiation plate, the dimensions of the heat radiation plate are large. The amount of heat radiation is large relative to the ratio of. Therefore, the heat dissipation area can be increased and the heat dissipation efficiency can be improved, while the heat dissipation plate can be made compact. Further, since the mounting seat for the electric component is integrally formed on the side opposite to the heat radiating side of the heat radiating plate, the number of components can be reduced and the cost can be reduced as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a perspective view of an outdoor unit of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is a schematic plan cross-sectional view of the outdoor unit of the air conditioner according to the first embodiment of the present invention.

FIG. 3 is a cutaway perspective view of an electrical equipment box of an outdoor unit according to a modification of the first embodiment of the present invention.

FIG. 4 is a perspective view of a conventional outdoor unit corresponding to the first embodiment of the present invention.

FIG. 5 is a perspective view of an electrical equipment box provided in an outdoor unit of an air conditioner according to a second embodiment of the present invention.

FIG. 6 is an exploded perspective view of an electrical equipment box provided in an outdoor unit of an air conditioner according to a second embodiment of the present invention.

FIG. 7 is a front view of an outdoor unit of an air conditioner according to a third embodiment of the present invention.

FIG. 8 (a) is an enlarged front view of an electrical equipment box provided in an outdoor unit of an air conditioner according to a third embodiment of the present invention, and FIG. 8 (b) is a schematic plan view of this electrical equipment box. Sectional view.

9 (a) is a front view of a heat dissipation plate provided in an electrical equipment box provided in an outdoor unit of an air conditioner according to a third embodiment of the present invention, and FIG. 9 (b) is FIG. [9b]-of (c)
Sectional drawing which follows the [9b] line, FIG.9 (c) is a rear view of this heat sink, FIG.9 (d) is a top view.

FIG. 10 (a) is a side view of a radiator plate and an electric component provided in an electrical equipment box provided in an outdoor unit of an air conditioner according to a third embodiment of the present invention, and FIG. 10 (b). Is a rear view of the heat sink and electric parts.

FIG. 11 is a cross-sectional view taken along the line [11]-[11] of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 heat exchange room 3 machine room 4 electrical equipment box 16 soundproof board (upper soundproof board) 21 electrical equipment board 22 electrical parts (capacitor) 23 board mounting part 24 electrical part storage part 44 giant transistor (electrical part) 45 sensor (electrical part) 46 Rectifier (electrical part) 50 Heat sink 52 Main fin 53 Sub fin 54 First mounting recess (mounting seat) 56 Second mounting recess (mounting seat) 58 Mounting part (mounting seat)

Claims (3)

[Claims] 1. The inside of the outdoor unit main body is divided into a heat exchange chamber accommodating an outdoor heat exchanger and a blower, and a machine room accommodating a compressor on the bottom surface, and an electrical equipment box is arranged above the machine room. An outdoor unit for an air conditioner, wherein a soundproof plate is held and formed on a lower surface of an electrical equipment box. 2. The inside of the outdoor unit main body is partitioned into a heat exchange chamber accommodating an outdoor heat exchanger and an air blower and a machine room accommodating a compressor on the bottom surface, and an electrical equipment box is arranged above the machine room. In the outdoor unit of the air conditioner, the electrical equipment box is placed on the rear surface of the electrical component storage section to store electrical components such as capacitors, and the electrical component box is placed on the front surface to cover the front surface of the electrical component storage section and mount the electrical component board on the front surface. An outdoor unit for an air conditioner, characterized in that it is integrally configured with a board mounting portion for. 3. The inside of the outdoor unit main body is divided into a heat exchange chamber accommodating an outdoor heat exchanger and a blower, and a machine room accommodating a compressor on the bottom surface thereof, and an electrical equipment box is arranged above the machine room. In the outdoor unit of an air conditioner, the electrical equipment box forms a heat dissipation plate for an electric component that requires heat dissipation in a portion facing the heat exchange chamber, and a plurality of heat dissipation side surfaces of the heat dissipation plate extend in a predetermined direction. Main fin and a plurality of sub-fins that intersect the main fin and extend a shorter distance than the main fin, and a mounting seat for an electric component is formed on the surface opposite to the heat dissipation plate. Outdoor unit.