JP2000205604A - Outdoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the outdoor unit for an air conditioner which prevents damages and maloperation due to the corrosion of a substrate and an electronic element inside a control box or electrical short caused by the water entering inside the control box. SOLUTION: An electronic element cooling means, in which a control box 1 and a radiating fin 2 are so arranged that the ribs 4 and 5 of the control box 1 engage the ribs 7 at both ends of the radiating fin 2, is provided. A drainage hole 3 is provided at the root portion of the rib 5 of the control box 1, so as to drain to outside from the control box 1. As a result, damages and maloperation due to the corrosion of a substrate and an electronic element or electrical shorts are prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit of an air conditioner, and more particularly, to an outdoor unit useful for protecting electronic elements inside the outdoor unit.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional air conditioner, and FIG. 4 shows the internal structure of an outdoor unit for an air conditioner. In FIG. 3, an indoor unit 21 and an outdoor unit 22 are connected by a refrigerant pipe 23. The outdoor unit 22 includes a panel 24 and a blowing grill 2.
5 inside, a compressor 26, a blower 27 with a motor,
A heat exchanger 28 and a control box 29 are arranged.

As shown in FIG. 4, the control box 29 has a substrate 31 and electronic elements installed on the substrate 31 inside, and protects the internal substrate 31 and the electronic elements. For electronic devices that emit a large amount of heat,
Cooling fins 30 for cooling the elements are mounted. The cooling fins 30 penetrate the control box 29 from the internal elements of the control box 29, and are installed so as to protrude toward the blower 27 with a motor. 27 cools electronic devices such as the power transistor 32 via the cooling fins 30.

[0004]

The outdoor unit is installed outside as the name implies, and is installed at a position where rain falls when it rains. The rainwater that has fallen into the outdoor unit enters the outdoor unit from the grill 25 or the like, and is sprayed by the rotation of the motor-equipped blower 27 and falls on the cooling fins 30 or the control box 29.

As described above, the cooling fin 30 is connected to the control box 2.
9 and protrudes from the control box 29, there is a gap 33 between the cooling fin 30 and the control box 29,
When water penetrates into the control box 29 through the gap 33, problems such as corrosion and malfunction of the substrate 31 and electronic elements in the control box 29 or electrical short circuit have occurred.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a cooling fan, a control unit protection unit having a control unit in which an electronic element is installed, and a control unit protection unit. In an outdoor unit for an air conditioner having an electronic element cooling means installed through the control unit protection means on the side of the cooling blower to cool the installed electronic elements, a drain installed in the control unit protection means An air conditioner outdoor unit having a hole for use, a plurality of ribs provided on the control unit protection means, and an electronic element cooling means arranged to mesh with the ribs of the control unit protection means. .

[0007]

FIG. 1 is a cross-sectional view of a control box 1 according to the present invention and a radiating fin 2 attached thereto, and FIG. 2 is a view taken in the direction of arrow A in FIG. In FIG. 1, two ribs 4 and 5 are installed in the control box 1, and a drain hole 3 is provided at the base of the rib 5.

The radiating fins 2 are arranged so that the ribs 7 at both ends thereof are engaged with the ribs 4 and 5 of the control box 1.
The radiation fins 2 cover the upper end of the rib 5.

The cooling fin 2 enters the outdoor unit 22 through the grill 25 and the like, and rotates by the rotation of the blower 27 with a motor.
Alternatively, the water splashing on the control box 1 tries to enter the inside of the control box 1 through the gap 9 between the rib 5 of the control box 1 and the radiation fin 2 or the drain hole 3. It is obstructed by the radiating fins 2 arranged above the hole 3 or falls because the gap 10 between the ribs 7 on both ends of the radiating fin 2 and the rib 4 of the control box 1 is too narrow to pass through.
Alternatively, the water is returned through the drain hole 3 and discharged from the control box 1 to the outside.

In this embodiment, it is sufficient that the control box 1 and the heat radiation fin 2 are engaged with each other as described above. Even if the ribs 5 of the control box 1 and the ribs 7 at both ends of the heat radiation fin 2 are straight, there is a problem. No, but as shown in FIG.
By installing the jaws 6 at the tip of the fins 2 and the jaws 8 at the ribs 7 at both ends of the radiating fins 2, the engagement between the control box 1 and the radiating fins 2 is ensured, resulting in a more desirable configuration.

The drain hole 3 is provided with a rib 5 of the control box 1 as shown in FIG.
It is desirable to arrange at the base of the. Furthermore, drain hole 3
Is disposed so that the upper part of the fin is covered with the radiating fin 2, and the gap 1 between the ribs 7 on both ends of the radiating fin 2 and the rib 4 of the control box 1
It is desirable that the heat radiating fins 2 and the control box 1 are arranged so as not to be arranged below the zero or the gap 10 is made as narrow as possible.

[0012]

As described above in detail in the embodiment of the present invention, the cooling fins 2 enter the interior of the outdoor unit 22 from the grill 25 or the like and rotate by the rotation of the blower 27 with the motor.
Alternatively, the water hung on the control box 1 is hindered by the gap 9 between the rib 5 of the control box 1 and the radiating fin 2 and the radiating fin 2 disposed above the drain hole 3, or Since the gap 10 between the ribs 7 on both ends and the rib 4 of the control box 1 is narrow, it cannot pass through and falls and returns again through the gap 9 or the drain hole 3 to be discharged from the control box 1 to the outside. Damage or malfunction due to corrosion or electrical shorting of the battery.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the mounting of a control box 1 and a radiation fin 2;

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a diagram showing an air conditioner.

FIG. 4 is a diagram showing an internal structure of an outdoor unit for an air conditioner.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 control box 2 heat radiation fin 3 drain hole 4 rib of control box 1 5 rib of control box 1 6 tip jaw of control box rib 5 7 both end ribs of heat dissipation fin 2 8 tip jaw of both ends rib 7 of heat dissipation fin 9 heat dissipation fin Gap between 2 and control box rib 5 10 Gap between radiating fin both end rib 7 and control box rib 4 21 Indoor unit 22 Outdoor unit 23 Refrigerant piping 24 Panel 25 Blow grill 26 Compressor 27 Blower with motor 28 Heat exchanger 29 Conventional Control box of conventional technology 30 Radiation fin of conventional technology 31 Substrate 32 Power transistor 33 Clearance between control box of conventional technology and radiation fin

Claims (1)

[Claims] 1. A cooling blower, a control unit protection unit having a control unit in which an electronic element is installed, and a control unit for cooling the electronic device installed in the control unit protection unit. In an outdoor unit for an air conditioner having an electronic element cooling unit installed through the unit protection unit, a drain hole provided in the control unit protection unit, and a plurality of ribs provided in the control unit protection unit And an electronic element cooling means arranged to be engaged with a rib of the control section protection means.