KR20080070398A - Outdoor unit of air conditioner - Google Patents

Abstract

Disclosed is an outdoor unit of an air conditioner capable of improving the heat dissipation effect of an electric component while simplifying the configuration of the related art. The outdoor unit of the air conditioner includes a cabinet equipped with a heat exchange chamber and a machine room, a partition partitioning the heat exchange chamber and a machine room, a heat exchanger and a blower fan installed in the heat exchange room, a compressor installed in the machine room, and electrical components fixed to the partition walls inside the machine room. And the partition wall includes carbon nanotubes for dissipation of heat transferred from the electric component.

Description

Outdoor unit of air conditioner {OUTDOOR UNIT OF AIR CONDITIONER}

1 is an exploded perspective view showing the internal configuration of an outdoor unit of an air conditioner according to a first embodiment of the present invention.

2 is a cross-sectional view showing the internal configuration of the outdoor unit of the air conditioner according to the first embodiment of the present invention.

3 is a perspective view illustrating an electronic component mounting structure of an outdoor unit of an air conditioner according to a first embodiment of the present invention.

4 illustrates a lamination structure of a carbon nanotube layer and a graphite layer forming a diaphragm of an outdoor unit of an air conditioner according to a first embodiment of the present invention.

5 is a longitudinal sectional view showing an internal configuration of an outdoor unit of an air conditioner according to a second embodiment of the present invention.

FIG. 6 is a perspective view illustrating an electronic component mounting structure of an outdoor unit of an air conditioner according to a second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: cabinet, 12: heat exchange chamber,

13: machine room, 14, 15: inlet,

16: outlet, 17: heat exchanger,

18: blower, 19: compressor,

20,40: electric parts, 30: diaphragm,

31: carbon nanotube layer, 32: graphite layer,

50: heat transfer apparatus, 51: first heat transfer member,

52: second heat transfer member, 53: heat pipe.

The present invention relates to an outdoor unit of an air conditioner, and more particularly, to an outdoor unit of an air conditioner capable of improving the heat dissipation effect of an electric component.

The outdoor unit of the air conditioner disclosed in Korean Unexamined Patent Publication No. 2001-56511 includes a heat exchange chamber in which a heat exchanger and a blower fan are installed, and a machine chamber in which a compressor and a circuit board are installed. The heat exchange chamber and the machine chamber are partitioned by partition walls, and circuit boards are provided on the partition walls. The partition wall is provided with a heat sink exposed toward the heat exchange chamber so as to be cooled by the air passing through the heat exchange chamber. The heat from the circuit board is transferred to the heat sink to allow heat dissipation. The circuit board is also cooled by the air flowing into the heat exchange chamber through the upper part of the machine chamber by the operation of the blower fan.

However, the outdoor unit of such an air conditioner has a large number of parts and a complicated internal structure due to the heat sink installed in the partition wall for cooling the circuit board. In particular, since the bulk heat sink occupies the internal space, there is a problem that the efficiency of the space is reduced. In addition, since the heat sink installed in the partition wall protrudes toward the heat exchange chamber, the flow efficiency of the air blower may be reduced by causing air flow resistance.

The present invention is to solve such a problem, it is an object of the present invention to provide an outdoor unit of the air conditioner to improve the heat dissipation effect of the electrical components while simplifying the configuration than the conventional.

The outdoor unit of the air conditioner according to the present invention for achieving the above object is a cabinet having a heat exchange chamber and a machine room, a partition partitioning the heat exchange chamber and a machine room, a heat exchanger and a blowing fan installed in the heat exchange room, a compressor installed in the machine room, And an electric component securely fixed to the partition wall in the machine room, and the partition wall includes carbon nanotubes for dissipating heat transferred from the electric component.

In addition, the partition wall is characterized in that the graphite and the carbon nanotubes are stacked.

In addition, the carbon nanotube layer is characterized in that it comprises a transverse laminated portion laminated in the transverse direction, and a longitudinal laminated portion laminated in the longitudinal direction.

In addition, the outdoor unit of the air conditioner according to the present invention, a cabinet having a heat exchange chamber and a machine room, a partition partitioning the heat exchange room and the machine room, a heat exchanger and a blower fan installed in the heat exchange room, a compressor and an electric component installed in the machine room, and the electric component And a heat transfer device for transferring the heat to the partition wall, wherein the heat transfer device includes a first heat transfer member coupled to the electric component, a second heat transfer member fixed to the partition wall, and the second heat transfer member from the first heat transfer member. And a heat pipe that transfers heat to the heat transfer member, wherein the partition includes carbon nanotubes for dissipation of heat transferred from the second heat transfer member.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 show the outdoor unit of the air conditioner according to the first embodiment of the present invention. As shown in FIG. 1 and FIG. 2, the outdoor unit includes a cabinet 10 in which an inner space is divided into a heat exchange chamber 12 and a machine chamber 13 by a partition wall 30.

Inlet ports 14 and 15 are formed at the rear and side surfaces of the cabinet 10 to allow external air to flow into the heat exchange chamber 12, and a discharge port through which the air passing through the heat exchange chamber 12 is discharged to the front of the cabinet 10. 16 is formed. In the heat exchange chamber 12, a heat exchanger 17 is installed to be adjacent to the inlets 14 and 15 of the rear and side surfaces, and a blower 18 is provided to blow air that has passed through the heat exchanger 17 to the discharge port. .

The blower 18 includes an axial blower fan 18a provided near the discharge port 16, a drive motor 18b for driving the blower fan 18a, and a support member 18c for supporting the drive motor 18b. Include. The support member 18c has a lower end fixed to the lower part of the cabinet 10 and an upper end fixed to the upper part of the cabinet 10. This configuration is such that the air sucked through the inlets 14 and 15 at the rear and side of the cabinet 10 is heat-exchanged while passing through the heat exchanger 17 when the blower fan 18a operates, and then through the outlet 16. It is to be discharged.

The machine room 13 includes a compressor 19 for compressing a refrigerant and an electric component 20 for controlling the driving of the compressor 19. Here, the electrical component 20 refers to various electrical and electronic components such as a circuit board, a power supply module, an insulated gate bipolar transistor (IGBT), etc., in which a circuit for driving control of the compressor 19 or the blower 18 is configured.

The electrical component 20 needs rapid heat dissipation because heat may be broken during operation and overheating during operation. Therefore, as shown in FIG. 2 and FIG. 3, the outdoor unit of the present invention is fixed in a state capable of heat transfer to the partition wall 30 that divides the machine room 13 and the heat exchange chamber 12. The heat generated from the electrical component 20 such as a circuit board is transferred to the partition wall 30, and the partition wall 30 is cooled by air passing through the heat exchange chamber 12 to dissipate the electrical component 20. This is to make it smooth.

The partition wall 30 is provided with a good heat transfer material so that heat transferred from the electric component 20 is rapidly transferred to the entire area of the partition wall 30 so as to quickly dissipate heat. The partition 30 is to replace the heat dissipation means such as a conventional heat sink. The partition wall 30 is composed of a composite material including carbon nanotubes (Carbon Nanotubes) is significantly higher than the general material thermal conductivity. In particular, as shown in FIG. 4, the partition wall 30 of the present invention is provided in a form in which the carbon nanotube layer 31 and the graphite layer 32 are stacked. In addition, the carbon nanotube layer 31 has a longitudinal stacking portion 31a and a horizontal stacking portion 31b that facilitate heat transfer in the transverse and longitudinal directions of the partition wall 30 so that heat can be quickly dissipated through the entire partition wall. ).

Table 1 below is a comparison of the thermal conductivity of common materials and carbon nanotubes.

TABLE 1

matter Stainless steel silver Copper aluminum Carbon nanotubes Thermal conductivity: k (W / mK) 14 428 401 235 2500

As shown in Table 1, the carbon nanotubes have a significantly higher thermal conductivity than the general materials used as the materials of a conventional heat sink. Therefore, the partition wall 30 formed by stacking such carbon nanotubes can quickly transfer heat transferred from the electric component 20 to the entire partition wall 30, thereby rapidly dissipating heat of the electric component 20. That is, according to the present invention, since the heat of the electrical component 20 is transferred to the entire area of the partition wall 30, the partition wall 30 is cooled by the air passing through the heat exchange chamber by the operation of the blower fan 18a. The electronic component 20 may be smoothly cooled without using a separate component such as a sink. In addition, since it does not use components such as a heat sink, the internal structure can be simplified and the utilization of the internal space can be improved.

5 and 6 illustrate the outdoor unit of the air conditioner according to the second embodiment of the present invention. In the second embodiment, an electric component 40 such as a circuit board is installed in a state in which it is spaced apart from the partition wall 30, and a heating device 50 is provided to transfer the heat of the electric component part 40 to the partition wall 30. It is. Except for the electric component 40 and the heat transfer device 50, the other components are the same as in the first embodiment. 5 and 6, the same reference numerals are assigned to the same components as in the first embodiment.

The heat transfer device 50 includes a first heat transfer member 51 tightly coupled to the electric component 40, a second heat transfer member 52 tightly fixed to the partition 30, and a first heat transfer member 51 and the first heat transfer member 51. It comprises a heat pipe 53 for connecting the two heat transfer members (52). The first and second heat transfer members 51 and 52 may be made of a material such as metal having high thermal conductivity, or may be made of a material including carbon nanotubes, like the partition wall 30. The heat pipe 53 is filled with a heat medium such as freon and ammonia in a pipe such as aluminum and copper, and the thermal conductivity is 1000 to 1500 times higher than that of general copper.

The heat transfer device 50 quickly heats the heat transferred from the electric component 40 to the partition 30. The barrier rib 30 including carbon nanotubes rapidly diffuses heat transferred through the second heat transfer member 52 of the heat transfer device 50 to the entire area of the barrier rib 30 so that heat dissipation is achieved. ) To ensure smooth cooling.

As described in detail above, the outdoor unit of the air conditioner according to the present invention is made of a material partitioning partition between the heat exchange chamber and the mechanical chamber is made of a material containing carbon nanotubes with high thermal conductivity, electrical components are installed so that heat is transferred to the partition wall. Therefore, there is an effect that can smoothly cool the electrical components.

In addition, since the heat of the electrical component is radiated through the partition wall having excellent thermal conductivity, it is not necessary to install a component such as a conventional heat sink, so that the internal configuration of the outdoor unit can be simplified and the utilization of the internal space can be improved. It works.

Claims (6)

A cabinet having a heat exchange chamber and a machine chamber, a partition partitioning the heat exchange chamber and a machine chamber, a heat exchanger and a blower fan installed in the heat exchange chamber, a compressor installed in the machine chamber, and electrical components securely fixed to the partition wall in the machine chamber; , The partition wall is an outdoor unit of the air conditioner, characterized in that it comprises a carbon nanotube for the dissipation of heat transferred from the electrical component. The method of claim 1, The partition wall is an outdoor unit of the air conditioner, characterized in that the graphite and the carbon nanotubes are stacked. The method of claim 2, The carbon nanotube layer is an outdoor unit of an air conditioner, characterized in that it comprises a transverse laminated portion laminated in the transverse direction, and a longitudinal laminated portion laminated in the longitudinal direction. A cabinet having a heat exchange chamber and a machine chamber, a partition partitioning the heat exchange chamber and a machine chamber, a heat exchanger and a blower fan installed in the heat exchange chamber, a compressor and an electric component installed in the machine chamber, and a heat transfer device for transferring heat of the electric component to the partition wall. Including, The heat transfer device includes a first heat transfer member coupled to the electric component, a second heat transfer member fixed to the partition wall, and a heat pipe transferring heat from the first heat transfer member to the second heat transfer member, The partition wall is an outdoor unit of an air conditioner, characterized in that it comprises a carbon nanotube for dissipating heat transferred from the second heat transfer member. The method of claim 4, wherein The partition wall is an outdoor unit of the air conditioner, characterized in that the graphite and the carbon nanotubes are stacked. The method of claim 5, The carbon nanotube layer is an outdoor unit of an air conditioner, characterized in that it comprises a transverse laminated portion laminated in the transverse direction, and a longitudinal laminated portion laminated in the longitudinal direction.

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