KR101166387B1 - Out-door unit of an air conditioner - Google Patents

Abstract

The present invention relates to an outdoor unit of an air conditioner having a structure that improves serviceability of electrical components and the like installed in a control casing and prevents foreign matters from accumulating on electrical components.

To this end, the outdoor unit of the air conditioner according to the present invention includes a cabinet, a bottom plate forming a lower surface of the cabinet, and a separator for partitioning the inside of the cabinet into a compression chamber and a heat exchange chamber. It includes a control casing is provided in the compression chamber and the various components are installed, the control casing is fixed to the separation plate to be inclined at a predetermined angle to the lower plate can improve serviceability and foreign matter such as dust printed circuit Stacking on the substrate surface can be minimized and the compression chamber can be configured more compactly.

Description

Outdoor unit of air conditioner {OUT-DOOR UNIT OF AN AIR CONDITIONER}

1 is a perspective view showing the appearance of an outdoor unit of an air conditioner according to the present invention.

2 is an exploded perspective view of an outdoor unit of an air conditioner according to the present invention.

3 is an exploded perspective view showing the mounting structure of the control casing of the outdoor device of the air conditioner according to the present invention.

4 is a cross-sectional view showing a heat dissipation structure of the control casing of the outdoor unit of the air conditioner according to the present invention.

5 (a) and 5 (b) are cross-sectional views illustrating installation angles of the control casing of the outdoor unit of the air conditioner according to the present invention.

Description of the Related Art [0002]

10: cabinet 11a: bottom plate

14,15: 1st, 2nd side plate 16: separation plate

16a: communication hole 17: heat exchange chamber

18: compression chamber 19: compressor

20: heat exchanger 30: blower

40: control casing 45: heat dissipation member

46: heat dissipation duct 47: guide portion

48,49: 1st, 2nd fixing part 50: connecting member

The present invention relates to an outdoor unit of an air conditioner, and more particularly, to an outdoor unit of an air conditioner having a control casing for installing a circuit board and electrical components.

The outdoor unit of a general air conditioner includes a compressor for compressing a refrigerant, an outdoor heat exchanger, and a blower fan for cooling the outdoor heat exchanger through forced air blowing. In addition, the interior space of the outdoor unit is divided into a space where a compressor is installed and a space where a blower fan is installed by a separator plate, and a control box for installing various electrical components and a circuit board is installed at the upper part of the space where the compressor is installed. .

The control box controls the operation of the internal parts of the outdoor unit, and is provided with a plurality of electronic components such as a PCB. As such, the electronic components embedded in the control box are complicatedly connected by a plurality of wires, making it difficult to assemble the control box. However, there is a problem that a defect occurs due to interference between the respective parts.

In order to solve such a problem, Korean Laid-open Patent Publication (Publication No. 10-2006-29740) is provided with a base fan that forms a lower appearance, a separation wall that is installed on the upper surface of the base fan, and divides left and right spaces, and is separated. Disclosed is an outdoor unit of an air conditioner installed at an upper end of a wall and including a control box for controlling the operation of various components.

The control box of the outdoor unit of the air conditioner disclosed in the publication is installed horizontally on the top of the separation wall, the lower portion of the control box is provided with heat dissipation means for dissipating heat of the control box. At this time, the heat dissipation means is attached to the bottom of the control box, and composed of a heat sink made of a good thermal conductivity material, and a plurality of heat dissipation fins protruding from the heat sink, a single printed circuit board is provided with a plurality of control parts in the control box do.

However, the printed circuit board installed in the outdoor unit of the air conditioner disclosed in the above publication has a single printed circuit for accommodating the outdoor unit having the intercom compressor because the quantity and size of the electric elements are larger than those of the electric elements included in the general compressor. The size of the substrate becomes large.

Therefore, when the control box in which such a single printed circuit board is installed in a horizontal direction with respect to the base fan, the size of the outdoor unit is also increased because of the large size of the control box, which makes it difficult to provide a compact outdoor unit.

In addition, the printed circuit board in the control box has a problem in that foreign matters such as dust accumulate on the printed circuit board because the control components therein are disposed upward, which may cause a malfunction or failure.

In addition, since the control box and the heat sink are provided on the upper part of the separator plate, there is a problem that deformation of the separator plate may occur due to the heavy control box and the heat sink. In particular, deformation may occur when an external shock occurs during movement.

In addition, the control box is fixed to the control seating portion of the separation wall, there is a problem that it is difficult to secure the control box just by fixing to the control seating.

In addition, since the heat dissipation means for dissipating the printed circuit board is provided on the heat exchanger side, the heat dissipation efficiency is lowered because it is not a structure capable of inducing air to the heat dissipation means side.

Therefore, to solve the conventional problems as described above, an object of the present invention is to improve the serviceability of the electrical components and the like installed in the control casing and air conditioning having a structure that can prevent the accumulation of foreign matters, etc. in the electrical components It is to provide the outdoor unit of the machine.

In addition, another object of the present invention to provide an outdoor unit having a structure that can prevent damage to the separation plate due to external impact.

According to an aspect of the present invention, there is provided an outdoor unit of an air conditioner including a cabinet, a bottom plate forming a bottom surface of the cabinet, and a separator for partitioning an interior of the cabinet into a compression chamber and a heat exchange chamber. A control casing is provided and includes various components, wherein the control casing is fixed to the separating plate to be inclined at a predetermined angle to the lower plate.

In addition, the control casing is characterized in that it comprises a heat radiation member for cooling the various components.

The control casing may further include a heat dissipation duct for guiding air passing through the heat dissipation member, wherein the compression chamber and the heat exchange chamber are in communication with the heat dissipation duct.

In addition, the heat dissipation duct is provided under the control casing, the separation plate is characterized in that the communication hole is formed in a position corresponding to the heat dissipation duct.

In addition, the heat dissipation duct is characterized in that it comprises a guide for preventing the foreign material flows into the compression chamber side.

In addition, the control casing is characterized in that it is installed on the front side inside the cabinet.

In addition, the cabinet further comprises a front plate forming a front surface, the control casing is characterized in that it is installed in parallel with the front plate.

The apparatus may further include a connecting member connecting the cabinet and the control casing to firmly fix the control casing.

And the outdoor unit of the air conditioner according to the present invention as seen from the other side is provided in the cabinet, the bottom plate forming the lower surface of the cabinet, the partition plate for partitioning the interior of the cabinet into a compression chamber and a heat exchange chamber, and is provided in the compression chamber at least And a control casing in which one printed circuit board is installed, wherein the control casing includes a heat dissipation duct communicating the compression chamber and the heat exchange chamber for heat dissipation of the printed circuit board, and perpendicular to the lower plate. It is characterized in that it is fixed.

In addition, the control casing is characterized in that it further comprises a heat dissipation member to improve the heat exchange of the heat dissipation duct.

In addition, the heat dissipation duct is provided under the control casing, the separation plate is characterized in that the communication hole is formed in a position corresponding to the heat dissipation duct.

In addition, the heat dissipation duct is characterized in that it comprises a guide for preventing the foreign material flows into the compression chamber side.

In addition, the control casing is characterized in that it is fixed perpendicular to the separation plate.

The apparatus may further include a connection member for fixing the control casing to the cabinet for firmly mounting the control casing.

Hereinafter, with reference to the accompanying drawings a preferred embodiment according to the present invention will be described in detail.

1 is a perspective view showing the appearance of the outdoor unit of the air conditioner according to the present invention, Figure 2 is an exploded perspective view of the outdoor unit of the air conditioner according to the present invention.

As shown in FIGS. 1 and 2, the outdoor unit of the air conditioner according to the present invention includes a cabinet 10 forming an exterior, an outdoor heat exchanger 20 installed inside the cabinet 10, and a blower 30. ), The compressor 19, and the control casing 40 is installed various electronic components.

As shown in FIG. 2, the cabinet 10 includes a bottom plate 11a, a front plate 12 and a rear plate 13 installed on the bottom plate 11a, both side plates 14 and 15, and an upper portion thereof. It comprises a cover (11b) for covering.

One side of the rear plate 13 is provided with a first side plate 14 formed by bending as an integral panel, and the other side is a bent portion 13a having an end bent for engagement with the second side plate 15. Is formed. In addition, the back plate 13 is formed with a suction port (13b) for the suction of the outside air in most areas.

The front plate 12 is disposed at the front of the cabinet, and a pair of discharge ports 12a for discharging air introduced into the cabinet 10 through the suction port 13b are formed up and down.

The second side plate 15 disposed between the front plate 12 and the back plate 13 is bent and formed, and the front portion 15a is coupled to the front plate 12 and the side portion 15b is the back plate 13. Is coupled to the bent portion 13a.

In addition, a control casing 40 to be described later is disposed at the rear side of the front side portion 15a of the second side plate 15, and openings 15c are formed at the side portion 15b for introduction of wires and pipes. A protective cover 15d covering the openings 15c is provided.

The separation plate 16 is provided in the cabinet 10 formed as described above, and the separation plate 16 divides the internal space of the cabinet 10 into a heat exchange chamber 17 and a compression chamber 18.

In the heat exchange chamber 17, heat exchange is easily performed in the outdoor heat exchanger 20 and the outdoor heat exchanger 20 that are bent along the inner side of the rear plate 13 and the first side plate 14 of the cabinet 10. It is provided with a blower 30 for causing an air flow around the outdoor heat exchanger (20).

The blower 30 includes a blower fan 31 for forcibly flowing air, a fan motor 32 for generating a driving force for rotation of the blower fan 31, and a motor support 33 for supporting the fan motor 32. ) The blowing fan 31 and the fan motor 32 are installed in pairs in the vertical direction to correspond to the pair of discharge ports 12a. The motor support 33 on which the fan motor 32 is mounted is fixed at one side to the bottom plate 11a and coupled to the cover 11b.

Therefore, the air introduced through the inlet port 13b of the rear plate 13 and the first side plate 14 is forcedly flowed by the blower fan 31 and heat-exchanged through the outdoor heat exchanger 20 so as to exchange the front plate 12. It is discharged to the outside through the discharge port (12a) of.

A control casing in which the compressor 19 for compressing the refrigerant introduced from the indoor unit and various components for controlling the operation of the compressor 19 are installed in the compression chamber 18, which is the other side of the cabinet 10. 40 is provided.

Compressor 19 is a pair of the bottom plate (11a) by compressing the refrigerant to be a high temperature and high pressure. Install.

The control casing 40 is provided to control the operation of various components in the outdoor unit. The control casing 40 has a plurality of electronic components 41, 42, and 43 embedded therein.

The control casing 40 is fixedly installed on the separation plate 16 in a substantially rectangular shape, wherein the control casing 40 has a predetermined angle with respect to the bottom plate 11a as shown in FIGS. 5 (a) and 5 (b). (A˚) It is installed inclined. In this case, various electrical elements attached to the control casing 40 are disposed to face the front portion 15a of the second side plate 15 so that the predetermined angle is maintained at about 70 ° to 110 °. In this way, by being inclined at a predetermined angle with respect to the bottom plate 11a, the accumulation of dust on the electric elements of the printed circuit board 43 is reduced, thereby reducing the incidence of malfunctions and failures caused by such dust. Preferably, the predetermined angle is approximately 90 degrees to prevent dust from accumulating and at the same time improve the mounting of the control casing (40).

In addition, a plurality of spaces are partitioned into partitions on the front surface of the control casing 40 so that at least one printed circuit board to which electric elements are attached may be installed. Such a plurality of spaces may be increased or decreased according to the number of printed circuit boards.

The printed circuit board includes a printed circuit board 43 for an inverter compressor for varying an operating frequency of an electric motor driving the compressor 19. The printed circuit board 43 for an inverter compressor includes an insulated gate bipolar transistor (IGBT), insulation. Some electric devices, such as gate bipolar transistors, intelligent power modules (IPMs), and dual diodes, are larger than those of conventional compressors, and thus generate more heat. Therefore, the heat dissipation member 45 is provided on the rear surface of the control casing 40 in which the printed circuit board 43 is installed for smooth operation of the printed circuit board 43.

3 is an exploded perspective view showing a mounting structure of the control casing of the outdoor unit of the air conditioner according to the present invention, Figure 4 is a cross-sectional view showing a heat radiation structure of the control casing of the outdoor unit of the air conditioner according to the present invention.

The heat dissipation member 45 is installed so that the heat dissipation member 45 is in contact with the heat generating portion of the printed circuit board 43 in order to increase the heat dissipation efficiency as shown in FIG.

The heat dissipation member 45 is formed of a plurality of heat dissipation fins, and the control casing 40 provides a heat dissipation duct 46 surrounding the heat dissipation member 45 to improve heat exchange performance of the heat dissipation member 45.

The heat dissipation duct 46 is provided in a form in which both sides are opened to allow the compression chamber 18 and the heat exchange chamber 17 to communicate with each other, and one side communicating with the heat exchange chamber 17 of the heat dissipation duct 46 is a heat exchange chamber ( 17, a guide portion 47 is provided to prevent other foreign substances such as rainwater flowing into the compression chamber 18 through the heat dissipation duct 46. That is, when rainwater is introduced into the heat exchange chamber 17, the rainwater is sprayed in the radial direction by the rotation of the blower fan 31. The rainwater sprayed in this way is compressed through the heat dissipation duct 46. If it is introduced to the side because it may cause failure of the electronic components such as the printed circuit board 43 is to prevent this in advance.

In addition, a communication hole 16a is formed in the separating plate 16 so that the guide part 47 of the heat dissipation duct 46 can be inserted and fixed. At this time, the control casing 40 is installed perpendicular to the separation plate 16 and the heat dissipation duct 46 is a rectangular shape formed in the vertical direction relatively long in the lower rear of the control casing 40 correspondingly communication hole 16a correspondingly. Is formed in a rectangular shape that is long in the vertical direction at the lower and middle positions of the separating plate 16.

Such a control casing 40 is fixed to the separation plate 16, as shown in Figure 2 for the fixing of the control casing 40, the first height for screw fixing on the lower side of one side of the control casing 40 The government 48 is provided, and a second fixing part 49 for fixing the control casing 40 is provided at the other upper portion of the control casing 40 facing the diagonal of the first fixing part 48. At this time, the second fixing part 49 is coupled to the connecting member 50 for fixing the control casing 40 to the rear plate 13 so that one side of the connecting member 50 is coupled to the second fixing part 49 The other side is fixed to the bent portion (13a) of the back plate (13). In addition, the connection member 50 is fixed to the electrical components and improve the space utilization.

Accordingly, the guide portion 47 of the heat dissipation duct 46 is inserted into the communication hole 16a of the separation plate 16 to fix the control casing 40, and then the control casing 40 is formed through the first fixing part 48. ) Is screwed to the separator 16. In addition, after the second fixing part 49 of the control casing 40 and the connecting member 50 are coupled, the control casing 40 is compressed by coupling the connecting member 50 to the bent portion 13a of the rear plate 13. It is possible to fix it firmly in the chamber 18.

In addition, when the cabinet 10 is disassembled for the service of the control casing 40, the failure of electrical elements such as a printed circuit board attached to the control casing 40 even if only the second side plate 15 is disassembled. Easily grasp the effect that can improve the serviceability, since the control casing 40 is disposed perpendicular to the bottom plate (11a) it is possible to minimize the accumulation of dust, etc. in the electric elements.

As shown in FIG. 4, the outdoor unit having the control casing 40 is forced to flow into the heat dissipation duct 46 due to the pressure difference caused by the driving of the blower fan 31. The forced air flow is exchanged with the heat radiating member 45 to cool the printed circuit board 43, and then flows into the heat exchange chamber 17 through the discharge portion 47a of the guide portion 47 to discharge the discharge hole 12a. It will be discharged to the outdoors through. Since the heat dissipation member 45 is installed inside the heat dissipation duct 46, the heat dissipation duct 46 guides the air to the heat dissipation member 45 to cool the heat dissipation member by the flowing air, thereby improving heat exchange efficiency.

In addition, the position of the heat dissipation member 45 is relatively located in the middle and the lower portion of the separation plate 16, and correspondingly, the communication hole 16a has a long rectangular shape in the vertical direction long in the corresponding position of the separation plate 16 Since it is formed, as in the prior art, there is a strong effect on the external shock compared to the heat dissipation member is located on the top.

As described above, the outdoor unit of the air conditioner according to the present invention can improve the serviceability because the entire printed circuit board is erected perpendicularly to the bottom plate to allow the electric devices to be observed, and foreign matter such as dust is printed. Stacking on the circuit board surface can be minimized and the compression chamber can be configured more compactly.

In addition, the present invention has a stronger effect on the external impact than the heat radiation member is located in the upper portion as in the prior art because the position of the heat radiation member is located in the middle, the lower portion of the separation plate relatively.

In addition, the present invention has the effect of improving the heat radiation efficiency by providing a heat radiation duct surrounding the heat radiation member to heat the printed circuit board.

Claims (14)

An outdoor unit of an air conditioner including a cabinet, a lower plate forming a lower surface of the cabinet, and a separating plate partitioning the inside of the cabinet into a compression chamber and a heat exchange chamber, It includes a control casing provided in the compression chamber and various components are installed, The control casing is outdoor unit of the air conditioner, characterized in that fixed to the separation plate to be inclined at a predetermined angle to the lower plate. The outdoor unit of claim 1, wherein the control casing includes a heat dissipation member for cooling the various components. The outdoor unit of an air conditioner of claim 2, wherein the control casing further comprises a heat dissipation duct for guiding air passing through the heat dissipation member, and the compression chamber and the heat exchange chamber are in communication with the heat dissipation duct. . The outdoor unit of claim 3, wherein the heat dissipation duct is provided under the control casing, and the separation plate has a communication hole formed at a position corresponding to the heat dissipation duct. The outdoor unit of an air conditioner according to claim 3, wherein the heat dissipation duct includes a guide part for preventing foreign substances from flowing into the compression chamber side. The outdoor unit of an air conditioner according to claim 1, wherein the control casing is installed at a front side inside the cabinet. 7. The outdoor unit of claim 6, wherein the cabinet further comprises a front plate forming a front surface, and the control casing is installed in parallel with the front plate. The outdoor unit of an air conditioner according to claim 1, further comprising a connection member connecting the cabinet and the control casing to firmly fix the control casing. A cabinet, a lower plate forming a lower surface of the cabinet, a separating plate dividing the inside of the cabinet into a compression chamber and a heat exchange chamber, and a control casing provided in the compression chamber and provided with at least one printed circuit board, The control casing includes a heat dissipation duct communicating the compression chamber and the heat exchange chamber for heat dissipation of the printed circuit board, the outdoor unit of the air conditioner, characterized in that fixed to the separation plate perpendicular to the lower plate. The outdoor unit of an air conditioner according to claim 9, wherein the control casing further comprises a heat dissipation member for improving heat exchange of the heat dissipation duct. The outdoor unit of claim 9, wherein the heat dissipation duct is provided under the control casing, and the separation plate has a communication hole formed at a position corresponding to the heat dissipation duct. The outdoor unit of an air conditioner according to claim 9, wherein the heat dissipation duct includes a guide part for preventing foreign matter from flowing into the compression chamber. The outdoor unit of an air conditioner according to claim 9, wherein the control casing is fixed perpendicular to the separation plate. The outdoor unit of an air conditioner according to claim 9, further comprising a connecting member for fixing the control casing to the cabinet for firmly mounting the control casing.

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