JP2001021179A - Outdoor unit of cooling system - Google Patents

Abstract

(57) [Problem] To provide an outdoor unit of a cooling device having a structure in which rainwater or the like does not enter a compressor room of an outdoor unit. An outdoor unit of a cooling device including a radiator room having a radiator and a radiator fan, and a compressor room provided adjacent to the radiator room and having a compressor and an electric component box. A heat sink provided on the back of the electric component box and cooling the electric equipment in the electric component box, and surrounding the heat sink, penetrating both side wall surfaces of the compressor chamber and being connected to the outside air to form the radiator chamber. A cooling duct connected to the suction side wall surface of the radiating fan and guiding the outside air to the radiator room.

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 a cooling device having a heat sink for radiating electric components.

[0002]

2. Description of the Related Art Generally, an outdoor unit of a conventional cooling device is
When an inverter is mounted, a heat sink is attached to an electric component box to cool these electric components, and the heat sink cools heat generated from the electric components.

At this time, as shown in FIG.
Is a separator wall 10 separating the compressor room 2 and the radiator room 3
And a heat sink 4 on the back of the electric component box 2b.
Is provided so as to be surrounded by a cooling duct 15, and the cooling duct 15 guides the air in the compressor chamber 2 to the radiator chamber 3 by the suction force of the blower 3b, that is, by the suction differential pressure during driving. 4 to cool the electrical components.

The above-described air in the compressor chamber 2 is heated by the heat of the compressor 2a when the outside air entering through an outside air intake port 8 provided on the wall of the compressor chamber 2 is heated. The air flows into the radiator room 2 through the cooling duct 15 due to the driving pressure difference of the blower 3b. Accordingly, since such a flow occurs, on a rainy day or the like, rain enters the outside air intake 8 together with the outside air, and wets the compressor 2a, wets its electric components, or wets the electric component box 3. Or

[0005]

As described above,
The outdoor unit of the conventional cooling device guides the outside air to the compressor room, and after the guided outside air is heated by the heat of the compressor, the electric components are cooled through the heat sink, so that the cooling effect is reduced by half. There was a problem. In addition, there is a problem that rain or the like easily enters the compressor room and causes problems such as electric leakage and corrosion.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an outdoor unit of a cooling device having a high cooling effect and a high reliability in which rain does not enter the compressor room. .

[0007]

An outdoor unit of a cooling device according to the present invention is provided with a radiator room having a radiator and a radiating fan, and is provided adjacent to the radiator room, and includes a compressor and an electric component box. An outdoor unit of a cooling device comprising: a compressor room having: a heat sink provided on a back surface of the electric component box for cooling electric devices in the electric component box; A cooling duct that penetrates through both side walls and is connected to the outside air and is connected to the suction side wall surface of the radiator fan of the radiator room, and guides the outside air to the radiator room.

Further, the cooling duct has a straight structure having substantially the same cross section so that the flow resistance of the outside air is reduced.

Further, the cooling duct is inclined so that rainwater from the outside air does not accumulate.

Further, the cooling duct is inclined toward the radiator room.

[0011] Further, a door is provided on the suction side of the cooling duct.

Further, the cooling duct comprises a suction side duct and a blowing side duct, and the suction side duct and the blowing side duct are formed separately.

Further, the cooling duct comprises a suction side duct and a blowing side duct, and the suction side duct is floated at a predetermined distance from the back of the electric component box. A mounting member for an electric device is disposed on the suction port, and the mounted mounting member does not penetrate the suction side duct.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIG. In this figure, 1 is an outdoor unit, 2 is a compressor room provided inside the outdoor unit 1 and containing a compressor 2a and an electric component box 2b.
(3) a radiator chamber provided in the outdoor unit 1 adjacent to the compressor room 2 and containing a radiator 3a and a radiating fan 3b;
Is provided on the back surface of the electric component box 2b and emits heat of the electric component (electric device) 2c of the electric component box 2b, in other words, a heat sink for cooling the electric component, and 5 surrounds the heat sink and a compressor room. 2 is connected to the upstream side wall of the wind of the radiator fan 3b of the radiator room 2 through both side walls of the radiator room 2 and guides outside air to the radiator room 2; This is a door that is provided to prevent the invasion of wind and rain.

The heat sink 4 provided on the back surface of the electric component box 2b cools the rear surface of the electric component box 2b to cool the electric components 2c, and cools the electric components via the rear surface. Alternatively, as shown in FIG. 2, a hole may be provided on the back surface, and the heat sink 4 may be provided in the hole.
May be inserted into the electric component box 2b in an airtight structure, and then electric components and the like may be attached to the heat sink 4.

At this time, the cross-sectional shape of the cooling duct 5 may be a rectangular hollow cross-sectional shape, which is the shape of a normal duct, or a U-shaped cross-sectional shape may be used to open the U-shaped opening. You may make it close using the back surface of the box 2b.
However, in the case of a square hollow cross-sectional shape, a hole for inserting the heat sink 4 is required on the wall surface of the cooling duct 5.

Next, the operation of the outdoor unit of the cooling device configured as described above will be described. First, when the power is turned on, the compressor 2a and the fan 3b are driven, and the compressor room 2
While the temperature of the air inside rises due to the heat radiation from the compressor 2a, the suction side of the fan 3b of the radiator chamber 3 has a negative pressure. Therefore, it is connected to the negative pressure side and penetrates through the compressor chamber 2 to communicate with the outside air. Outside air is sucked into the radiator room 3 from the connected cooling duct 5.

Therefore, since the heat sink 4 provided in the cooling duct 5 is cooled by the outside air sucked by the fan 3b, a device such as an inverter IGBT or the like 2d attached to the heat sink 4 or an electric component The air in the electric component box 2b is cooled through the back surface of the box 2b, and the electric components 2c in the electric component box 2b are also cooled.

With such a structure, since the outside air flows directly to the radiator chamber 3 by the driving pressure difference of the fan 3b, in other words, it does not flow through the compressor chamber 2,
Since rain, snow and the like do not enter the compressor room 2, electric parts around the compressor 2 a do not get wet, and the floor and the like of the compressor room 2 do not get wet.

As described above, a cooling device including a radiator room having a radiator and a radiating fan, and a compressor room provided adjacent to the radiator room and having a compressor and an electric component box. In the outdoor unit, a heat sink provided on the back surface of the electric component box for cooling electric equipment in the electric component box, and surrounding the heat sink, penetrating both side wall surfaces of the compressor chamber and being connected to outside air. A cooling duct connected to the suction side wall surface of the radiator fan of the radiator room and guiding the outside air to the radiator room. Since the air flows into the equipment room, the cooling effect is improved with a simple configuration, and an outdoor unit of a highly reliable cooling device in which rain or the like does not wet the electric parts of the compressor or the like can be obtained.

In this configuration, the cooling duct 5
As shown in FIG. 3, when the cross-section is made to have a substantially straight structure so as to reduce the flow resistance of the outside air, the wind speed of the outside air flowing through the duct 5 does not decrease, so that the cooling effect is further improved. Thus, an outdoor unit having a highly reliable cooling device can be obtained.

In this configuration, the cooling duct 5
As shown in FIG. 4, the suction port side cross-sectional area may be larger than the blow-out side cross-sectional area, and only the bottom of the cooling duct 5 may be inclined to prevent water from accumulating. May simply be tilted so that water does not collect. In any case, since the rainwater is smoothly discharged from the inside of the cooling duct 5, a highly reliable outdoor unit of the cooling device which is prevented from being corroded by the rainwater or the like can be obtained.

Further, in the above-described inclined configuration, when the cooling duct 5 is inclined toward the radiator chamber, rainwater is further smoothly introduced into the cooling duct 5 due to the inclination and the above-mentioned driving pressure difference of the fan. Will be discharged from
Further, an outdoor unit of a cooling device having high reliability in which corrosion, electric leakage and the like due to rainwater and the like are prevented can be obtained.

Also, as shown in FIG.
If the armor 6 is provided on the suction side of the air conditioner, rainwater can be prevented from entering by the armor 6, so that an outdoor unit of a highly reliable cooling device in which corrosion, electric leakage and the like due to rainwater and the like are prevented can be obtained.

Further, as shown in FIG.
Is composed of the suction-side duct 5a and the discharge-side duct 5b, and the formed suction-side duct 5a and the discharge-side duct 5b are formed as separate bodies. In the case of the larger one, the material handling property is improved, and the handling at the time of assembling is also improved, so that an outdoor unit of a cooling device having good material handling property and assembling property can be obtained.

Embodiment 2 FIG. Hereinafter, a second embodiment of the present invention will be described with reference to FIG. As shown in FIG. 5, in the second embodiment, the cooling duct 5 of the first embodiment is composed of a suction side duct 5a and a discharge side duct 5b. The cross-sectional shape is made to be at least a quadrangular hollow cross-sectional shape, and this suction side duct 5a is floated by a predetermined distance from the back of the electric component box 2b, and electric equipment and the like are attached to the back of the electric component box 2b at the floating portion. The mounting member 7 is disposed so that the disposed mounting member 7 does not penetrate the suction side duct 5a. The other configuration is as described in the first embodiment.

Next, the operation of this configuration will be described.
First, even when the power is turned on and the fan 3b is driven and the outside air containing rainwater is sucked in from the suction side duct 5a, the suction side duct 5a floats a predetermined distance from the back of the electric component box 2b, and the floating portion The electrical equipment mounting member 7 is disposed on the back of the electrical component box 2b, and since the mounted mounting member 7 does not penetrate the suction side duct 5a, rainwater enters the electrical component box 2b via the mounting member 7. Without this, the outside air flows into the radiator room while cooling the electric device via the heat sink 4.

As described above, the cooling duct comprises the suction side duct and the blowing side duct, and the suction side duct is floated at a predetermined distance from the back of the electric component box. A mounting member for electric equipment is disposed on the back of the box 2b, and the disposed mounting member does not penetrate the suction side duct, so that rainwater does not enter the electric component box, so that corrosion and electric leakage may occur. An outdoor unit of a cooling device which is difficult to perform and has high reliability can be obtained.

[0029]

As described above, the outdoor unit of the cooling device according to the present invention is provided adjacent to the radiator room having the radiator and the radiator fan, and includes the compressor and the electric component box. An outdoor unit of a cooling device comprising: a compressor room having: a heat sink provided on a back surface of the electric component box for cooling electric devices in the electric component box; A cooling duct that penetrates both side wall surfaces and is connected to the outside air and is connected to the suction side wall surface of the radiator fan of the radiator room, and guides the outside air to the radiator room. Since it flows into the radiator room due to the drive differential pressure of the fan while cooling directly, the cooling effect is improved with a simple configuration,
An outdoor unit of a cooling device having high reliability in which rain or the like does not wet electric parts or the like of the compressor can be obtained.

Further, since the cooling duct has a straight structure having substantially the same cross section so as to reduce the flow resistance of the outside air, the wind speed of the outside air flowing in the duct is not reduced, so that the cooling duct is further cooled. An outdoor unit of a highly reliable cooling device with improved effects can be obtained.

Further, since the cooling duct is inclined so that rainwater from the outside air does not accumulate, the rainwater can be smoothly discharged from the cooling duct, so that corrosion due to rainwater or the like is prevented. Thus, an outdoor unit having a highly reliable cooling device can be obtained.

Further, since the cooling duct is inclined toward the radiator chamber side, rainwater can be more smoothly discharged from the cooling duct by the inclination and the driving pressure difference of the fan. Furthermore, an outdoor unit of a cooling device with high reliability in which corrosion due to rainwater or the like is prevented can be obtained.

Further, since the armor is provided on the suction side of the cooling duct, it is possible to further prevent the intrusion of rainwater. Therefore, it is possible to prevent corrosion by rainwater and the like, and to prevent the intrusion of rainwater. The outdoor unit of the cooling device is obtained.

Further, since the cooling duct is composed of a suction side duct and a blow side duct, and the suction side duct and the blow side duct are formed separately, the capacity becomes large, and the figure becomes large. Even in the case of an improved unit, the material handling property is improved and the handling at the time of assembling is also improved, so that an outdoor unit of a cooling device with good material handling property and assembling property can be obtained.

Further, the cooling duct comprises a suction side duct and a blowing side duct, and the suction side duct is floated at a predetermined distance from the back of the electric component box. The mounting member for electrical equipment is located in the area, and this mounting member does not penetrate the suction duct, so that rainwater does not enter the electrical component box, so that corrosion and electrical leakage are unlikely to occur. An outdoor unit having a high cooling device can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration perspective view of an outdoor unit of a cooling device according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of the inside of the cooling duct of the outdoor unit of the cooling device according to Embodiment 1 of the present invention.

FIG. 3 is a schematic configuration diagram of a cooling duct having a straight structure according to the first embodiment of the present invention.

FIG. 4 is a schematic configuration diagram when the cooling duct according to Embodiment 1 of the present invention is inclined.

FIG. 5 is a schematic configuration diagram when a cooling duct according to Embodiment 2 of the present invention is floated.

FIG. 6 is a configuration perspective view of an outdoor unit of a conventional cooling device.

[Explanation of symbols]

1 outdoor unit, 2 compressor room, 2a compressor, 2b
Electrical goods box, 2c electrical equipment, 3 radiator room, 3a
Radiator, 3b radiator blower (fan), 4 heat sink, 5 cooling duct, 5a suction side duct, 5b outlet side duct, 6 armor door, 7 mounting member, 8 suction port, 10 separator wall, 15 cooling duct.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Kozai 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Corporation (72) Inventor Kazunori Shiroshima 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation

Claims (7)

[Claims] An outdoor unit of a cooling device comprising: a radiator chamber having a radiator and a radiator fan; and a compressor chamber provided adjacent to the radiator chamber and having a compressor and an electric component box. A heat sink provided on the back of the electric component box, for cooling the electric equipment in the electric component box, and surrounding the heat sink, penetrating through both side walls of the compressor chamber and being connected to the outside air to form the radiator chamber; An outdoor unit for a cooling device, comprising: a cooling duct connected to a suction side wall surface of a heat radiating fan and guiding the outside air to the radiator room. 2. The outdoor unit of a cooling device according to claim 1, wherein the cooling duct has a straight structure having substantially the same cross section so as to reduce the flow resistance of the outside air. 3. The outdoor unit of a cooling device according to claim 1, wherein the cooling duct is inclined so that rainwater from the outside air does not collect. 4. The outdoor unit of a cooling device according to claim 3, wherein the cooling duct is inclined toward the radiator room. 5. The outdoor unit of a cooling device according to claim 1, wherein a door is provided on a suction side of the cooling duct. 6. The cooling duct according to claim 1, wherein the cooling duct comprises a suction duct and a blowing duct, and the suction duct and the blowing duct are formed separately. An outdoor unit of the cooling device according to any one of the above. 7. The cooling duct comprises a suction side duct and a blowing side duct, and the suction side duct is floated at a predetermined distance from the back of the electric component box. The outdoor unit of a cooling device according to claim 1, wherein a mounting member of the electric device is disposed on a back surface, and the disposed mounting member does not penetrate the suction side duct.