JP6513284B2 - Outdoor unit of air conditioner - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner.

  The inside of the outdoor unit of the air conditioner is divided into a fan chamber in which a fan is mounted and a machine chamber in which a compressor is mounted. In the outdoor unit, the fan room and the machine room may be partitioned by the partition wall and the electrical component box provided thereon. The electrical component box is a box for storing an electric substrate on which an electronic component is mounted on the mounting surface, and is generally molded of resin.

  In Patent Document 1, the electrical component box is provided inside the outdoor unit in the form of so-called flat placement provided on the partition wall in a state where the mounting surface of the electric substrate is horizontal. In the flat type, the end of the electrical component box is located above the partition wall, and the other part is accommodated in the machine room and located above the compressor. That is, most of the electrical component box is housed in the machine room.

  Apart from this, an electrical component box may be provided inside the outdoor unit in the form of vertical installation. In the vertical installation type, a partition is provided from the bottom to the top of the outdoor unit, and the partition divides the fan room from the machine room. In the case of the vertical mounting type, the electrical component box is attached to the partition wall in a state where the mounting surface of the electric substrate and the partition wall are parallel, that is, the mounting surface of the electric substrate is vertical.

JP 2005-133996

  However, in the flat type, since the fan room and the machine room are divided by the electric component box and the partition wall, no gap is generated between the electric component box and the partition wall when the electric component box is thinned. In addition, it is necessary to increase the area of the partition wall by the amount of thinning of the electrical component box. Therefore, the material cost increases as the area of the partition is expanded. As the cost of materials increases, the manufacturing cost of the outdoor unit increases. In addition, since the electrical component box becomes larger in the horizontal direction than in the vertical direction, the machine room becomes larger. As the size of the machine room increases, the size of the outdoor unit increases. As the outdoor unit is enlarged, the installation space of the outdoor unit is limited.

  In addition, in the case of the vertical type, since the partition wall is provided from the bottom to the top, the material cost is increased. As the cost of materials increases, the manufacturing cost of the outdoor unit increases. In addition, the space above the compressor, in which the electrical component box is stored in the flat type, is a wasteful space.

  This invention is made in view of the above, Comprising: It aims at obtaining the outdoor unit of the air conditioner which can attain suppression of manufacturing cost and size reduction of an apparatus.

  In order to solve the problems described above and achieve the object, an outdoor unit of an air conditioner according to the present invention comprises a housing, a fan housed inside the housing, and a compression housed inside the housing Machine, an electrical component box housed inside the case, an electric board housed inside the electrical component box, a machine in which a fan room in which the fan is housed and a compressor are housed And a compartment that divides into a room. The electrical component box has a horizontal portion provided above the compressor inside the machine room, and a vertical portion extending downward from the horizontal portion. The electric substrate includes a horizontal substrate portion housed horizontally in a mounting surface on which the electronic component is mounted and a vertical substrate portion housed in a vertical portion on a mounting surface where the electronic component is mounted vertically. And a connection portion for electrically connecting the wiring layer of the horizontal substrate portion and the wiring layer of the vertical substrate portion. The partition portion is constituted of a partition wall which extends from the bottom surface of the housing and does not reach the top surface, and a vertical portion of an electrical component box which closes the gap between the partition and the top surface.

  The outdoor unit of the air conditioner according to the present invention has the effect of being able to suppress the manufacturing cost and miniaturize the device.

Front view of outdoor unit of air conditioner according to Embodiment 1 of the present invention Plan view of the electric substrate in the first embodiment Sectional view of an electric component box storing an electric board in the first embodiment Front view of outdoor unit of air conditioner according to Embodiment 2 of the present invention Sectional view of an electric component box storing an electric board in the second embodiment Top view of component in embodiment 2 The perspective view of the component in Embodiment 2 A figure explaining a process of fixing a heat sink to refrigerant piping in a 2nd embodiment A figure explaining a process of fixing a heat sink to refrigerant piping in a 2nd embodiment A figure explaining a process of fixing a heat sink to refrigerant piping in a 2nd embodiment Front view of outdoor unit of air conditioner according to a variation of Embodiment 2

  Below, the outdoor unit of the air conditioner concerning embodiment of this invention is demonstrated in detail based on drawing. The present invention is not limited by the embodiment.

Embodiment 1
FIG. 1 is a front view of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention. In FIG. 1, in order to show the internal structure of the outdoor unit 1 of an air conditioner, it has shown in the state which permeate | transmitted the panel which closes a front surface. In the following description, the outdoor unit 1 of the air conditioner is also referred to simply as the outdoor unit 1. The outdoor unit 1 is an outdoor unit of an air conditioner that cools or heats a room in cooperation with an indoor unit (not shown).

  The outdoor unit 1 has a housing 20 which is an outer shell, a fan 4 which is housed inside the housing 20 and generates an air flow when it is rotated, and a compressor which is housed inside the housing 20 and which has a function of compressing refrigerant. And 3. In addition, the outdoor unit 1 includes an electrical component box 5 housed inside the housing 20 and an electric substrate 6 constituting an inverter circuit housed inside the electrical component box 5 and drivingly controlling the compressor 3 and the fan 4. And

  The inside of the housing 20 is divided into a fan chamber 21 in which the fan 4 is accommodated and a machine chamber 22 in which the compressor 3 is accommodated. Partitioning section 23 partitioning the inside of housing 20 into fan room 21 and machine room 22 is formed of partition 2 extending from bottom surface 20a of housing 20 toward top surface 20b, and part of electric component box 5 Ru. The detailed configuration of the dividing section 23 will be described later.

  The electrical component box 5 has a horizontal portion 5a provided above the compressor 3 inside the machine chamber 22, and a vertical portion 5b extending downward from the horizontal portion 5a, and has an L-shaped cross section as a whole. .

  The electric substrate 6 has the mounting surface 16a on which the electronic component 8 is mounted horizontal and the horizontal substrate portion 6a housed in the horizontal portion 5a of the electrical component box 5 and the mounting surface 16b on which the electronic component 8 is mounted vertical. And a vertical base portion 6 b housed in the vertical portion 5 b of the electric component box 5.

  FIG. 2 is a plan view of the electric substrate 6 in the first embodiment. As shown in FIG. 2, the electric substrate 6 may be formed of a single substrate in which the horizontal substrate portion 6 a and the vertical substrate portion 6 b are connected. The electric substrate 6 shown in FIG. 2 is divided into two substrates of the horizontal substrate portion 6a and the vertical substrate portion 6b by dividing at the electric substrate dividing slits 7 formed on one substrate. The electric substrate dividing slit 7 may be replaced by an electric substrate 6 which can be divided by forming a V-shaped groove or a perforation. Alternatively, the electric substrate 6 may be divided into the horizontal substrate portion 6a and the vertical substrate portion 6b from the beginning.

  The electric substrate 6 is provided with a connection jumper 9 which is a connection portion for electrically connecting the wiring layer of the horizontal substrate portion 6a and the wiring layer of the vertical substrate portion 6b. Thereby, the electronic component 8 mounted on the mounting surface 16 a and the electronic component 8 mounted on the mounting surface 16 b maintain the electrical connection through the wiring layer and the connection jumper 9 even after the division of the electrical substrate 6. be able to.

  FIG. 3 is a cross-sectional view of the electric component box 5 containing the electric substrate 6 in the first embodiment. The electronic component 8 mounted on the mounting surface 16b of the vertical substrate portion 6b housed in the vertical portion 5b of the electrical component box 5 is exposed to the outside through the opening 24 formed on the fan chamber 21 side of the vertical portion 5b. .

  Next, the division part 23 which divides the inside of the housing | casing 20 is demonstrated. As described above, the dividing portion 23 includes the partition 2 extending from the bottom surface 20 a of the housing 20 toward the top surface 20 b and a part of the electrical component box 5.

  Here, although the partition wall 2 extends from the bottom surface 20 a of the housing 20 toward the top surface 20 b, the height of the partition wall 2 does not reach the top surface 20 b of the housing 20. Therefore, the space between the upper end 2 a of the partition wall 2 and the top surface 20 b of the housing 20 is an opening for communicating the fan room 21 with the machine room 22. The opening between the upper end 2 a of the partition 2 and the top surface 20 b of the housing 20 is closed by the vertical portion 5 b of the electrical component box 5. Thus, the inside of the housing 20 is divided into the fan chamber 21 and the machine chamber 22 by the partition wall 2 and the vertical portion 6 b.

  By arranging the electrical component box 5 in this manner, as shown in FIG. 1, the electronic component 8 mounted on the mounting surface 16 b of the vertical substrate portion 6 b is exposed to the fan chamber 21. Therefore, the electronic component 8 mounted on the mounting surface 16 b can be cooled by the air flow generated when the fan 4 rotates. Here, if the heat sink 10 is attached to the electronic component 8 as shown in FIG. 1, the cooling efficiency of the electronic component 8 mounted on the mounting surface 16b can be further improved. If the heat sink 10 is attached to the electronic component 8, the electronic component 8 can be cooled even if only the heat sink 10 is exposed to the fan chamber 21 without exposing the electronic component 8 to the fan chamber 21. Become.

  The electronic component 8 mounted on the mounting surface 16 a and the mounting surface 16 b includes an inverter module and a diode bridge that are likely to become hot during operation. Therefore, among the electronic components 8, the inverter module and the diode bridge which are likely to become high temperature during operation are mounted on the mounting surface 16 b and exposed to the fan chamber 21 or attached with the heat sink 10. The temperature rise of the electronic component 8 can be suppressed. By suppressing the temperature rise, the stability and the reliability of the operation of the electronic component 8 can be improved.

  Further, since the vertical portion 5b of the L-shaped electric component box 5 is incorporated in a part of the partition 23, the ratio of the partition wall occupied in the partition 23 can be reduced. This can be said that the area of the partition 2 can be reduced. By reducing the area of the partition wall 2, it is possible to reduce the material cost and suppress the manufacturing cost.

  Here, when the whole of the flat-shaped electric component box is stored in the machine room 22 side, the enlargement of the outdoor unit 1 caused by the enlargement of the machine room 22 is caused. When a part of the plane-shaped electric component box is housed in the fan room 21 to block upsizing of the outdoor unit 1, the ventilation resistance in the fan room 21 is increased, so that ventilation when the fan 4 rotates This may lead to a drop in volume, which may reduce the performance of the air conditioner. On the other hand, in the outdoor unit 1 of the air conditioner according to the first embodiment, since the electrical component box 5 is L-shaped, the alignment direction of the fan chamber 21 and the machine chamber 22 is better than the planar electrical component box. Overall length can be shortened. Therefore, it is possible to miniaturize the machine room 22 without jumping out the electrical component box 5 to the fan room 21 side, to miniaturize the outdoor unit 1 itself, and to prevent the performance deterioration of the air conditioner. .

Second Embodiment
FIG. 4 is a front view of the outdoor unit of the air conditioner according to Embodiment 2 of the present invention. FIG. 5 is a cross-sectional view of the electrical component box in which the electric substrate is accommodated in the second embodiment. In addition, in FIG. 4, in order to show the internal structure of the outdoor unit 31, it has shown in the state which permeate | transmitted the panel which covers the front. The same components as those in the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

  In the second embodiment, as shown in FIGS. 4 and 5, the vertical substrate 6 b is accommodated in the electrical component box 5 with the mounting surface 16 b facing the machine room 22. Also, the electronic component 8 mounted on the mounting surface 16 b is exposed to the machine room 22.

  Further, the heat sink 11 is attached to the electronic component 8 mounted on the mounting surface 16 b. The heat sink 11 is composed of two components 11 a. The heat sink 11 is fixed to the refrigerant pipe 15 in a state in which the refrigerant pipe 15 extending from the compressor 3 is sandwiched between the two component members 11 a. The refrigerant pipe 15 is generally a pipe made of copper.

  FIG. 6 is a plan view of the component 11a in the second embodiment. FIG. 7 is a perspective view of the component 11a in the second embodiment. The groove 13 in which the refrigerant pipe 15 is fitted is formed in the component member 11 a when the refrigerant pipe 15 is sandwiched. Further, in the component member 11a, a fastening hole 12 for fastening the two component members 11a with each other with a screw is formed.

  FIGS. 8 to 10 illustrate the process of fixing the heat sink 11 to the refrigerant pipe 15 in the second embodiment. As shown in FIG. 8 and FIG. 9, the heat sink 11 is fixed to the refrigerant pipe 15 by holding the refrigerant pipe 15 between the constituent members 11 a and fastening the constituent members 11 a with the screw 14 penetrating the fastening hole 12. Ru. In addition, although illustration is abbreviate | omitted, you may fasten the structural members 11a comrades through a nut to the screw 14, or form a screw thread in the fastening hole 12 formed in one structural member 11a, and the fastening hole The screws 14 may be screwed into 12 to fasten the component members 11 a together.

  Here, the refrigerant piping 15 to which the heat sink 11 is fixed is a refrigerant piping after passing through the outdoor unit heat exchanger through which the cooled refrigerant passes, in both of the case where the air conditioner is in the cooling operation and the heating operation. It is assumed that it is 15. In addition, illustration of an outdoor unit heat exchanger is abbreviate | omitted.

  According to the outdoor unit 31 of the air conditioner described above, the electronic component 8 can be cooled via the heat sink 11 in contact with the copper refrigerant pipe 15 having a heat transfer coefficient higher than that of air. Since the refrigerant whose temperature is lower than that of the surrounding air flows inside the refrigerant pipe 15, the heat radiation efficiency from the electronic component 8 through the refrigerant pipe 15 and the heat sink 11, that is, the cooling efficiency of the electronic component 8 is improved. Can be As a result, the heat sink 11 can be miniaturized, and the material cost can be reduced and the space can be saved. Moreover, since the space above the compressor 3 can be used as a space for providing the heat sink 11, the space can be further saved.

  FIG. 11 is a front view of the outdoor unit 31 of the air conditioner according to a modification of the second embodiment. In this modification, the electronic component 8 mounted on the mounting surface 16 a of the horizontal substrate portion 6 a is exposed to the machine room 22. Further, the heat sink 11 attached to the electronic component 8 mounted on the mounting surface 16 a is fixed to the refrigerant pipe 15.

  As in the outdoor unit 31 of the air conditioner according to the second embodiment, if the electronic component 8 is cooled using the refrigerant pipe 15 instead of the air flow generated by the rotation of the fan 4, the electronic component 8 is a fan Since it is not necessary to direct to the chamber 21, cooling can be performed using the refrigerant pipe 15 even when the electronic component that needs to be cooled is mounted on the horizontal substrate portion 6 a. Therefore, it is possible to improve the design freedom of the component arrangement.

  The configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

  1, 31 outdoor unit, 2 partitions, 2a upper end, 3 compressor, 4 fans, 5 electric component box, 5a horizontal part, 5b vertical part, 6 electric board, 6a horizontal board part, 6b vertical board part, 7 electric board division For slits, 8 electronic components, 9 connection jumpers, 10, 11 heat sinks, 11a components, 12 fastening holes, 13 grooves, 14 screws, 15 refrigerant pipes, 16a, 16b mounting surface, 20 housings, 20a bottom, 20b top surface , 21 fan room, 22 machine room, 23 compartments, 24 openings.

Claims (5)

And
A fan housed inside the housing;
A compressor housed inside the housing;
An electrical component box housed inside the housing;
An electric board housed inside the electric component box;
And a partition section for dividing the inside of the housing into a fan room in which the fan is stored and a machine room in which the compressor is stored.
The electrical component box has a horizontal portion provided above the compressor inside the machine chamber, and a vertical portion extending downward from the horizontal portion, and has an L-shaped cross section as a whole.
The electric substrate has the mounting surface on which the electronic component is mounted horizontal and the horizontal substrate portion housed in the horizontal portion, and the mounting surface on which the electronic component is mounted vertical and the vertical substrate housed in the vertical portion A connecting portion for electrically connecting the wiring layer of the horizontal substrate portion and the wiring layer of the vertical substrate portion,
The partition section is a partition wall which extends from the bottom surface of the housing and does not reach the top surface, and is located closer to the top surface side than the top of the partition wall, and the partition and the top surface An outdoor unit of an air conditioner, comprising: the vertical portion closing an interval.   The outdoor unit of an air conditioner according to claim 1, wherein the electronic component mounted on the vertical substrate portion is exposed to the fan chamber.   The outdoor unit of the air conditioner according to claim 2, further comprising a heat sink attached to the electronic component exposed in the fan chamber. The electronic component mounted on the vertical substrate portion is exposed to the machine room,
The outdoor unit of the air conditioner according to claim 1, further comprising a heat sink attached to the electronic component exposed to the machine room and a refrigerant pipe extending from the compressor. The electronic component mounted on the horizontal substrate portion is exposed to the machine room,
The outdoor unit of the air conditioner according to claim 1, further comprising a heat sink attached to the electronic component exposed to the machine room and a refrigerant pipe extending from the compressor.

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