JP3665450B2 - Air conditioner outdoor unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an outdoor unit of an air conditioner, and relates to an electrical component mounting structure.
[0002]
[Prior art]
FIG. 5 is a front view of an outdoor unit of a conventional air conditioner disclosed in, for example, Japanese Utility Model Laid-Open No. 5-90223.
In the figure, the outdoor unit 13 includes a housing 25, a heat exchanger 17 is disposed slightly in the center of the housing 25 and a compressor 14 that compresses refrigerant gas is disposed on the right side of the heat exchanger 17. . A propeller fan 15 that removes heat from the refrigerant gas compressed by the compressor 14 is disposed in front of the heat exchanger 17.
[0003]
In addition, a partition plate 26 that partitions the casing 25 up and down is provided on the top of the propeller fan 15, and the substrate 5 is disposed in the electrical component box 1 on the upper surface of the partition plate 26. Further, heat generating electronic components 6 and 7 are mounted on the upper surface of the substrate 5.
Radiation fins 8 are attached to the lower surface of the substrate 5 so as to receive the wind of the propeller fan 15.
[0004]
Further, a partition plate 16 is provided between the propeller fan 15 and the compressor 14 to partition the lower portion of the housing 25 into left and right sides. A substrate 9 is attached to the partition plate 16, and the compressor 9 side of the substrate 9 is disposed on the compressor 14 side. A heat generating electronic component 11 is mounted on the main surface.
Further, heat radiation fins 12 are attached to the main surface of the substrate 9 on the propeller fan 15 side so as to receive the wind of the propeller fan 15.
[0005]
Not only the heat exchanger 17 of the outdoor unit 13 but also the heat generating electronic components 6, 7, 11 are cooled by the propeller fan 15.
[0006]
[Problems to be solved by the invention]
Since the conventional outdoor unit of the air conditioner is configured as described above, the electric component box 1 uses the propeller fan 15 to cool the heat radiation fins 8 and 12. Since the arrangement of the electrical components is dispersed on the upper side and the side from the necessity of securing the areas 12 and 12 and exposing them to the propeller fan 15 side, it is difficult to reduce the size of the electrical component box 1.
[0007]
The present invention has been made to solve the above-described problems, and provides an outdoor unit of an air conditioner that can reduce the size of an electrical component box and can effectively cool a radiating fin by a propeller fan. For the purpose.
Moreover, it aims at improving the heat dissipation effect of a radiation fin.
It is another object of the present invention to effectively ventilate the interior of the electrical component box and prevent water from entering from the vent.
[0008]
[Means for Solving the Problems]
An outdoor unit of an air conditioner according to the present invention includes an outdoor unit main body, a fan chamber provided in the main body and having a fan, and an electric component box provided in the main body adjacent to the fan chamber and having electric components such as an inverter. And a first print having a first heat dissipating fin, which is mounted horizontally so as to cover the upper surface of the electrical component box, and is exposed to one side of the electrical component box and is cooled by a blower. A second print having a substrate and a second heat dissipating fin that is vertically attached so as to cover the back of the electrical component box, and is exposed to the back of the electrical component box and is cooled by a blower. And a substrate.
[0009]
Also, an outside air inlet provided on the other side surface of the electrical component box for introducing outside air for cooling into the internal space of the electrical component box, and a first heat generating component and a first radiating fin provided in the electrical component box. And a first ventilation port through which the outside air cooled is passed to the blower chamber side.
[0010]
The first shielding plate is provided on the blower side of the ventilation opening.
[0011]
Moreover, a part of the electrical component box protrudes into the blower chamber, and the protruding portion is arranged at one corner of the outer four corners of the rotation area of the blower.
[0012]
Moreover, the length of each fin of the 1st radiation fin is changed and arrange | positioned along the outer side of the rotation area | region of an air blower.
[0013]
Also, provided on the other side of the electrical component box, the outside air introduction port for introducing outside air for cooling into the interior space of the electrical component box, and the blower side vertical surface of the electrical component box, the internal air of the electrical component box A second ventilation opening that covers the second ventilation opening, covers the second ventilation opening, the opening faces the front side of the main body, and the opening is arranged on the front side from the rear end of the bell mouth part of the blower. And a shielding plate.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. 1 to 4 are diagrams showing an example of an embodiment of the present invention, FIG. 1 is an exploded perspective view showing an electrical component mounting structure, FIG. 2 is a plan view of an outdoor unit of an air conditioner, and FIG. 3 is an air conditioner FIG. 4 is a cross-sectional view of a main part of the outdoor unit of the air conditioner.
[0015]
In the figure, reference numeral 1 denotes an electrical component box, in which a reactor 2 and a terminal block 3 are housed, and a printed circuit board (A) 5 which is a first printed circuit board is horizontally held by a substrate holder (A) 4 and an electrical product. It is fixed to the box 1.
[0016]
The printed circuit board (A) 5 is attached with a heat generating electronic component (A1) 6 and an electronic component (A2) 7 which are first heat generating components, and a heat radiating fin (A) 8 which is a first heat radiating fin. It is fixed with screws.
A printed circuit board (B) 9 as a second printed circuit board is fixed to the electrical component box 1 vertically by a substrate holder (B) 10.
[0017]
The printed circuit board (B) 9 is attached with a heat generating electronic component (B) 11 which is a second heat generating component, and is fixed to the heat radiating fin (B) 12 which is a second heat radiating fin with screws. The
[0018]
The electric component box 1 for the inverter configured as described above includes a partition plate 16 that partitions a compressor chamber in which the compressor 14 is stored and a blower chamber in which the propeller fan 15 is stored inside the outdoor unit 13. It is housed in the form of overhanging the upper part of the blower chamber.
[0019]
The heat radiating fins (A) 5 are exposed from the side surface of the electrical component box 1 to the blower chamber side and are located in a space outside the rotation area of the propeller fan 15.
Further, the radiation fin (B) 9 is exposed on the back side of the electrical component box 1 and is located in a space between the heat exchanger 17 and the electrical component box 1 on the rear surface of the outdoor unit 13.
Since each of the radiating fins (A) 5 and (B) 9 is exposed to the blower chamber side, cooling is promoted by the airflow generated by the rotation of the propeller fan 15.
[0020]
In addition, a louver 19 as an outside air inlet is provided in the service panel 18 on the right side of the electrical component box 1 in order to dissipate heat in the internal space of the electrical component box 1, and the fan chamber is negatively affected by the rotation of the propeller fan 15 during operation. By being pressurized, the outside air is sucked in and the airflow passing through the inside of the electrical component box 1 is extracted into the blower chamber.
[0021]
In the electrical product configured as described above, the back surface and the top surface of the reactor 2 and the like placed inside the electrical product box 1 are configured to be covered with the printed circuit board (A) 5 and the printed circuit board (B) 9. Therefore, it is possible to reduce the size by consolidating electrical products.
[0022]
In addition, by disposing the radiating fins (A) 8 and the radiating fins (B) 12 on the side surface and the back surface of the electrical component box 1, satisfying the restriction that they need to be exposed and attached to the blower chamber side, a wider area Radiating fins can be provided.
[0023]
When the inside of the electrical component box 1 is cooled by taking in the outside air from the right side to the left side, the heat generating electronic component (A1) 6 and the heat generating electronic component (A2) 7 attached to the printed circuit board (A) 5 are radiated. By providing a ventilation port (A) 20 that is a first ventilation port that draws outside air from the space between the fins 8 to the blower chamber side, a propeller is disposed on the lower side of the radiating fin (A) 8. In the air flow by the fan 15 and the upper surface, the flow of the outside air through the inside of the electrical component box can be performed, so that the air flow flowing through both surfaces of the heat radiating fin (A) 8 can be formed, and the heat dissipation effect can be enhanced.
[0024]
Further, by providing a shielding plate 21 as a first shielding plate on the blower side of the ventilation opening (A) 20, it is possible to prevent water from splashing up from the propeller fan 15 and entering the electrical component box 1 during rain. Can do.
[0025]
The part facing the blower chamber side of the electrical component box 1 is formed in a staircase shape, provided with heat radiation fins (A) 8 downward toward the blower chamber, and along the space outside the rotation area of the propeller fan 15. The fins are arranged by changing the length of each fin.
[0026]
On the blower chamber side, since the triangular spaces are vacant at the outer four corners of the rotation area of the propeller fan 15, the unit can be downsized by effectively utilizing this portion.
[0027]
The electrical component box 1 is provided with a ventilation port (B) 22 which is a second ventilation port for drawing the internal air to the blower chamber side on the vertical surface of the electrical component box 1 on the blower side, and covers the ventilation port. The cover 23 as the second shielding plate is provided on the outside, the opening of the cover 23 is directed to the front side, and the opening is arranged on the front side from the rear end of the bell mouth part 24 of the blower. Prevents water from entering and effectively vents the interior.
[0028]
【The invention's effect】
The outdoor unit of the air conditioner according to the present invention is arranged by combining the printed circuit boards horizontally and vertically, and by providing the radiation fins on the side surface and the back surface of the electrical component box, thereby improving the electrical component box component storage efficiency, Realize downsizing of product boxes and outdoor units.
[0029]
Moreover, there is an effect of enhancing the heat radiation effect of the first heat radiation fins by providing the first ventilation port through which the outside air that has cooled the first heat generating component and the first heat radiation fins is passed to the blower chamber side.
[0030]
Further, by providing the first shielding plate on the air blower side of the air outlet, water such as rainfall is prevented from entering the electrical component box by the air blower.
[0031]
Moreover, the outdoor unit can be miniaturized by arranging the electrical component box portion protruding into the blower chamber at one corner of the outer four corners of the rotation area of the blower.
[0032]
Further, the outdoor unit can be reduced in size by changing the length of each fin of the first radiating fin along the outside of the rotation area of the blower.
[0033]
Also, a second ventilation port provided on the vertical side of the blower side of the electrical component box, which draws the internal air of the electrical component box to the blower chamber side, covers the second ventilation port, and the opening faces the front side of the main body By providing the second shielding plate in which the opening is disposed on the front side from the rear end of the bell mouth portion of the blower, water can be prevented from entering from the opening and the internal ventilation can be effectively performed.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of an embodiment of the present invention, and is an exploded perspective view showing an electrical component mounting structure.
FIG. 2 is a diagram showing an example of an embodiment of the present invention, and is a plan view of an outdoor unit of an air conditioner.
FIG. 3 is a diagram showing an example of an embodiment of the present invention, and is a front view of an outdoor unit of an air conditioner.
FIG. 4 is a diagram showing an example of an embodiment of the present invention, and is a cross-sectional view of a main part of an outdoor unit of an air conditioner.
FIG. 5 is a front view of an outdoor unit of a conventional air conditioner.
[Explanation of symbols]
1 Electrical component box, 2 reactor, 3 terminal block, 4 substrate holder (A), 5 printed circuit board (A), 6 heat generating electronic component (A1), 7 heat generating electronic component (A2), 8 heat dissipating fin (A), 9 Printed circuit board (B), 10 circuit board holder (B), 11 heat generating electronic component (B), 12 heat radiation fin (B), 13 outdoor unit, 14 compressor, 15 propeller fan, 16 partition plate, 17 heat exchanger, 18 Service panel, 19 louvers, 20 Ventilation hole (A), 21 Shield plate, 22 Ventilation hole (B), 23 cover, 24 bell mouth.

Claims (6)

Outdoor unit body,
A blower chamber provided in the main body and having a blower;
An electrical component box provided in the main body adjacent to the blower chamber and having electrical components such as an inverter,
A first heat dissipating fin is mounted horizontally so as to cover the upper surface of the electric component box, and is attached to a first heat generating component that is exposed on one side of the electric component box and is cooled by the blower. A printed circuit board,
A second print having a second heat dissipating fin attached vertically to cover the back of the electrical component box and having a second heat generating component attached to the back of the electrical component box and cooled by the blower A substrate,
An air conditioner outdoor unit characterized by comprising: An outside air inlet that is provided on the other side of the electrical component box and introduces outside air for cooling into the internal space of the electrical component box;
A first ventilation port provided in the electrical component box, for passing the outside air that has cooled the first heat-generating component and the first heat radiation fin to the blower chamber side;
The outdoor unit of an air conditioner according to claim 1, further comprising: The outdoor unit of an air conditioner according to claim 2, wherein a first shielding plate is provided on the blower side of the ventilation port. 2. The outdoor unit of an air conditioner according to claim 1, wherein a part of the electrical component box projects into the blower chamber, and the projecting portions are arranged at one corner of the outer four corners of the rotation area of the blower. The outdoor unit of an air conditioner according to claim 4, wherein the length of each fin of the first heat dissipating fin is changed along the outside of the rotation area of the blower. An outside air inlet that is provided on the other side of the electrical component box and introduces outside air for cooling into the internal space of the electrical component box;
A second ventilation port provided on the blower side vertical surface of the electrical component box, and for extracting the internal air of the electrical component box to the blower chamber side;
A second shielding plate that covers the second ventilation opening, the opening faces the front side of the main body, and the opening is arranged on the front side from the rear end of the bell mouth part of the blower;
The outdoor unit of an air conditioner according to claim 1, further comprising:

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