JPH07218094A - Refrigerator - Google Patents

Abstract

PURPOSE:To cool a compressor without influence of heat dissipation of a condenser in a refrigerator in which the compressor and the condenser are forcibly cooled by a fan installed in a machine room. CONSTITUTION:A closely wound coiled condenser 9 is disposed between a compressor 1 and a fan 3, and a central axis of the condenser 9 disposed linearly with those of the compressor 1 and the fan 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator in which a compressor and a condenser are provided in a machine room below a main body, and these are forcibly cooled by a fan.

[0002]

2. Description of the Related Art In recent years, refrigerators have been equipped with a condenser on the back side of an outer panel forming the outer shell of a main body to radiate condensation heat from the outer panel. Radiation alone has become insufficient. Therefore, the conventional refrigerator is disclosed in JP-A-4-17.
As described in Japanese Patent No. 4277, there is provided a configuration in which a condenser is also installed in a machine room and it is forcibly cooled with a compressor by a fan.

Hereinafter, referring to the drawings, Japanese Patent Laid-Open No. 4-1
A conventional refrigerator described in Japanese Patent No. 74277 will be described.

FIG. 6 is a perspective view of a machine room of a conventional refrigerator,
FIG. 7 is a vertical cross-sectional view of the machine room of the refrigerator. 1 is a long cylinder type rotary compressor, 2 is a condenser, a fan 3 and a partition plate 4 are installed between the long cylinder type rotary compressor 1 and the condenser 2, and a long cylinder type rotation is performed by the partition plate 4 in the machine room. It is divided into a compressor 1 side and a condenser 2 side. At the bottom of the machine room is a bottom plate 5,
Rear covers 6 are installed on the rear side, and the machine room has a bottom plate 5
Also, the back cover 6 provides a substantially sealed state. Further, the bottom plate 5 is provided with an intake port 7 for outside air, and the back cover 6 is provided with an exhaust port 8.

In the above structure, the outside air is sucked into the condenser-2 by the fan 3 through the suction port 7,
Cool condenser 2. After that, the air passes through the partition plate 4 and is blown to the long tubular rotary compressor 1, cools the long tubular rotary compressor 1, and is discharged from the exhaust port 8 to the outside of the machine room.

[0006]

However, in the above structure, the outside air taken in by the fan is once heat-exchanged with the condenser, so that the hot air is blown to the long cylinder type rotary compressor especially at high outside air temperature. Will be done. As a result, the long cylinder rotary compressor becomes insufficiently cooled, which causes fatal failure of the refrigerator such as deterioration of oil in the long cylinder rotary compressor, decomposition of the refrigerant, and burnout of the motor winding, and the long cylinder rotary compressor. In order to secure the cooling of the tubular rotary compressor, it is necessary to increase the rotation speed of the fan, which causes a problem that the fan noise increases.

The present invention addresses the above-mentioned problems and provides a refrigerator capable of ensuring cooling of a long cylinder type rotary compressor without unduly increasing the rotation speed of a fan.

[0008]

In order to solve the above-mentioned problems, a refrigerator according to the present invention comprises a long cylinder type rotary compressor, a close-wound coil type condenser, a long cylinder type rotary compressor and a close-wound coil type in a machine room. A fan for cooling the condenser is installed, and a tightly wound coil condenser is installed between the long cylinder type rotary compressor and the fan so that its central axis is aligned with the central axis of the long cylinder type rotary compressor and fan. It was done.

The inner diameter of the closely wound coil condenser is made larger than the outer diameter of the long tubular rotary compressor, and a cylindrical air guider is formed in front of the fan, and the inner diameter of the air guider is The inner diameter of the close-wound coil capacitor is approximately the same.

The cylindrical air guider covers the close-wound coil-shaped capacitor and has an inner diameter larger than the outer diameter of the close-wound coil-shaped capacitor.

[0011]

According to the present invention, since the outside air passing through the inside of the tightly wound coil condenser is directly blown to the long cylinder rotary compressor by the fan,
The cooling of the long cylinder type rotary compressor is not deteriorated.

Further, the inner diameter of the close-wound coil condenser is larger than the outer diameter of the long tubular rotary compressor, and an air guider having the same inner diameter as the inner diameter of the close-wound coil condenser is formed in front of the fan. Further, when the air guider having the inner diameter larger than the outer diameter of the close-wound coil-shaped condenser and covering the close-wound coil-shaped condenser is formed, the long tubular rotary compressor can be cooled more efficiently.

[0013]

Embodiments of the refrigerator according to the present invention will be described below with reference to the drawings. The same components as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a perspective view of a machine compartment of a refrigerator according to the first embodiment of the present invention, and FIG. 2 is a horizontal sectional view of the machine compartment of the refrigerator of the same embodiment. Between the long cylinder type rotary compressor 1 and the fan 3, a close-wound coil-shaped condenser 9 formed of a material having a large thermal conductivity such as a copper tube is provided, and the central axis thereof is the long cylinder type rotary compressor 1. Also, they are installed so as to be aligned with the central axis of the fan 3.

In the above structure, the outside air is sucked by the fan 3 through the suction port 7, passes through the partition plate 4, and is blown to the closely wound coil condenser 9 and the long cylinder rotary compressor 1 side. . At this time, a part of the blown outside air cools the close-wound coil-shaped condenser 9 and a part of the outside air passes through the inside of the close-wound coil-shaped condenser 9 and flows to the long tubular rotary compressor 1. The long cylinder rotary compressor 1 is directly blown with low-temperature outside air that has not exchanged heat with the close-wound coil condenser 9, thus ensuring cooling of the long cylinder rotary compressor 1.

FIG. 3 is a horizontal cross-sectional view of the machine room of the refrigerator according to the second embodiment of the present invention. The point different from the first embodiment is that the closely wound coil condenser 10 is different.
The inner diameter (φD1) is larger than the outer diameter (φD2) of the long tubular rotary compressor 1. In this configuration,
Since the inner diameter (φD1) of the close-wound coil condenser 10 is larger than the outer diameter (φD2) of the long tube rotary compressor 1, heat is not exchanged with the close-wound coil condenser 10 in the long tube rotary compressor 1. A large amount of low temperature outside air is blown, and cooling of the long tubular rotary compressor 1 is promoted.

FIG. 4 is a horizontal cross-sectional view of the machine room of the refrigerator according to the third embodiment of the present invention. The difference from the second embodiment is that the inner diameter (φD3) is in front of the fan 3. Is that a cylindrical air guider 11 having substantially the same inner diameter (φD1) as the closely wound coil-shaped capacitor 10 is formed integrally with the partition plate 4. With this configuration, the outside air taken in is rectified by the air guider 11 and is blown to the inner surface of the closely wound coil condenser 10 and the long tubular rotary compressor 1, so that the cooling efficiency is improved and the fan 3
Even if the number of rotations is reduced, a sufficient air volume can be obtained for cooling the closely wound coil condenser 10 and the long tubular rotary compressor 1.

FIG. 5 is a horizontal cross-sectional view of the machine room of the refrigerator according to the fourth embodiment of the present invention. The difference from the third embodiment is that the inner diameter (φD4) is in front of the fan 3. Is larger than the outer diameter (φD5) of the close-wound coil-shaped capacitor 10, and the cylindrical air guider 12 is integrally formed with the partition plate 4 so as to cover the close-wound coil-shaped capacitor 10. With this configuration, the sucked outside air is rectified by the air guider 12 and sent to both the inner and outer surfaces of the closely wound coil condenser 10 and the long tubular rotary compressor 1, so that the cooling efficiency is further improved and the fan 3 is cooled. Even if the number of revolutions is further reduced, a sufficient amount of air can be obtained for cooling the closely wound coil condenser 10 and the long tubular rotary compressor 1.

[0019]

As described above, the refrigerator according to the present invention has a fan for cooling the long cylinder type rotary compressor, the close wound coil type condenser, the long cylinder type rotary compressor and the close wound coil type condenser in the machine room. The closely wound coil condenser is installed between the long tubular rotary compressor and the fan such that the central axis thereof is aligned with the central axes of the long tubular rotary compressor and fan. As a result, low temperature outside air that has not exchanged heat with the tightly wound coil condenser is blown to the long cylinder rotary compressor, so that the long cylinder rotary compressor is sufficiently cooled, and oil deterioration and refrigerant decomposition are ensured. Also, it is possible to avoid a serious failure such as burnout of the motor winding. Also, by making the inner diameter of the closely wound coil condenser larger than the outer diameter of the long cylinder rotary compressor, the amount of air blown to the long cylinder rotary compressor is increased, and the reliability of the long cylinder rotary compressor is improved. Further increase. Furthermore, by installing a cylindrical air guider with an inner diameter that is almost the same as the inner diameter of the close-wound coil-shaped condenser in front of the fan, the rectified outside air is sent to the inner surface of the close-wound coil-shaped condenser and the long tubular rotary compressor. As a result, the cooling efficiency is improved, and even if the number of rotations of the fan is reduced, it is possible to secure a sufficient air volume for cooling the closely wound coil condenser and the long cylinder rotary compressor, resulting in noise reduction. Becomes Furthermore, by providing a cylindrical air guider in front of the fan that covers the close-wound coil-shaped capacitor and has an inner diameter larger than the outer diameter of the close-wound coil-shaped capacitor, both inner and outer surfaces of the close-wound coil-shaped capacitor and long tubular rotation Since the rectified outside air is blown to the type compressor, the cooling efficiency is further improved, and even if the fan speed is further reduced, a sufficient amount of air is needed to cool the closely wound coil condenser and the long cylinder type rotary compressor. As a result, noise can be further reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a machine room portion of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a horizontal sectional view of a machine room portion of the refrigerator according to the embodiment.

FIG. 3 is a horizontal sectional view of a machine room portion of a refrigerator according to a second embodiment of the present invention.

FIG. 4 is a horizontal sectional view of a machine room portion of a refrigerator according to a third embodiment of the present invention.

FIG. 5 is a horizontal sectional view of a machine room portion of a refrigerator according to a fourth embodiment of the present invention.

FIG. 6 is a perspective view of a machine room of a conventional refrigerator.

FIG. 7 is a vertical sectional view of a machine room of a conventional refrigerator.

[Explanation of symbols]

 1 Long tube type rotary compressor 3 Fan 9,10 Closely wound coiled condenser 11,12 Air guider

Claims (4)

[Claims] 1. A long-tube rotary compressor, a close-wound coil-shaped condenser, and a fan for cooling the long-tube rotary compressor and the close-wound coil-shaped condenser are provided in a machine room at the bottom of the main body, and the long cylinder is provided. A refrigerator in which the close-wound coiled condenser is installed between a mold rotary compressor and the fan such that the central axis of the condenser is aligned with the central axes of the long tubular rotary compressor and the fan. 2. The refrigerator according to claim 1, wherein the close-wound coil condenser has an inner diameter larger than an outer diameter of the long tubular rotary compressor. 3. The refrigerator according to claim 2, wherein a cylindrical air guider is formed in front of the fan, and an inner diameter of the air guider is substantially the same as an inner diameter of the closely wound coil condenser. 4. The refrigerator according to claim 3, wherein the cylindrical air guider covers the close-wound coil-shaped capacitor, and the inner diameter thereof is larger than the outer diameter of the close-wound coil-shaped capacitor.