JPS6337868B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to improvements in domestic and commercial refrigerators.

[Prior art]

A typical conventional refrigerator, as shown in Figure 1,
A compressor 3 and a condenser 4 surrounded by a cover 2 are provided on the main body 1 having a freezer compartment 1A and a refrigerator compartment 1B, and an evaporator 5 is provided on the back side of the freezer compartment 1A.
The refrigerator has a structure in which a fan 8 is installed, and a defrosting water treatment device 6 is installed at the bottom of the refrigerator main body 1. The evaporator 5 is connected to a condenser 4 via a capillary reach tube (not shown), and the fan 8 is directly connected to a motor 7 attached to the back wall of the refrigerator body 1. The compressor 3, condenser 4 and evaporator 5 constitute a refrigeration cycle, and the condenser 4
The evaporator 5 is connected to a defrosting water treatment device 6 via a drain pipe (not shown).

When operating a refrigerator configured as above,
Frost gradually adheres to and grows on the evaporator 5. As the frost buildup on the evaporator 5 progresses, the cooling capacity of the refrigerator decreases, so the operation of the refrigerator is stopped at an appropriate time and an electric heater (not shown) attached to the evaporator 5 is heated. Defrost. Perform this defrosting. After this defrosting is completed, heating by the electric heater is stopped and operation is restarted. In this case, water that has fallen from the evaporator 5 due to defrosting passes through a drain pipe (not shown) and accumulates in the water tray of the defrosting water treatment device 6.
The defrosting water collected in this water tray is usually collected by the compressor 3.
The high-temperature refrigerant discharged from the refrigerant is heated, evaporated, and released into the atmosphere.

In this way, the defrost water in the defrost water treatment device 6 is heated and evaporated by the heat of the high-temperature refrigerant and is released into the atmosphere. The surrounding atmosphere becomes a high temperature atmosphere. Therefore, the heat of the atmosphere enters the refrigerator compartment 1B through the bottom wall 1C of the refrigerator main body 1, and
Since the air inside is heated, the cooling capacity is significantly reduced.

In addition, the compressor 3 and condenser 4 installed at the top of the refrigerator body 1 and the defrost water treatment device 6 installed at the bottom are connected by a drain pipe. significantly increased in length,
This method has drawbacks such as not only high cost but also increased resistance in the pipe and increased compressor input.

In recent years, in order to eliminate the thermal influence of the heat source on the refrigerator body, the
As shown in the above publication, a compressor 3, a condenser 4, and an evaporation plate 6 provided on the condenser 4 are provided on the refrigerator main body 1.
and a pump 9 that sucks defrost water from the evaporator 5.
has been proposed. In this way, this invention not only requires an extra water pump 9, but also a defrosting water tank provided below the water pump 9 and the evaporator 5 provided on the back side of the freezer compartment 1A, that is, in the refrigerator compartment 1B. 10 is connected via a considerably long pipe 11, the structure becomes complicated and large, resulting in high cost and disadvantages of increased resistance within the pipe.

[Purpose of the invention]

The present invention aims to eliminate the above-mentioned drawbacks, reduce the power loss of the compressor, and improve the cooling efficiency and cold preservation effect.

[Summary of the invention]

In order to achieve the above object, the present invention provides a compressor, a condenser, and a defrost water treatment device on the refrigerator main body, and furthermore, the defrost water treatment device is installed at the bottom or side of the compressor, and The machine is placed close enough to receive the heat generated by the machine, and is also installed at a lower position than the evaporator installed at the top of the freezer compartment, and the defrost water from the evaporator is automatically fed to the defrost water treatment equipment. It is configured to allow heat to flow in and to effectively release heat generated by the compressor.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In Figure 3, 1 is the freezer compartment 1A and the refrigerator compartment 1B.
The top surfaces 1D ₁ to _{1D 3} of the freezer compartment 1A are formed in a stepped shape, and on the lower surface 1D ₁ there is a defrost water treatment device 6 and an upper part of the defrost water treatment device 6. A compressor 3 is installed on the upper surface 1D3, and a condenser 4 is installed on the upper surface _1D3 . The condenser 4 and the compressor 3 are connected by a pipe (not shown), and this pipe passes through a defrosting water treatment device 6. The devices 3, 4, 6 are surrounded by a cover 2 having a plurality of ventilation holes 2a.

Reference numeral 5 denotes an evaporator installed in the upper part of the freezer compartment 1A and at a higher position than the defrosting water treatment device 6, and this evaporator 5 is connected to the condenser 4 via a capillary tube (not shown). has been done. 8 is evaporator 5
12 is a saucer disposed below the evaporator ₅ , and 13 is a fan for removing defrosting water that has fallen onto the saucer 12. The water is introduced into the frost water treatment device 6. Although the defrosting water treatment device 6 is provided below the compressor 3 in FIG. 3, it goes without saying that it may be placed side by side with the compressor 3.

Next, the operation of this embodiment configured as described above will be explained.

The high-temperature, high-pressure gas refrigerant discharged from the compressor 3 flows into the condenser 4 via a pipe passing through the defrosting water treatment device 6, where it is condensed and liquefied. This liquid refrigerant is depressurized and expanded in the capillary reach tube, flows into the evaporator 5 and evaporates to become a low-temperature gas refrigerant, and this gas refrigerant is returned to the compressor 3 again. The air cooled by the low-temperature gas refrigerant is fed by a fan 8 and circulates within the freezer compartment 1A and the refrigerator compartment 1B to perform a cooling effect.

In this case, frost adhering to the evaporator 5 is removed in the same manner as in the conventional refrigerator described above. The defrosting water removed by this defrosting flows through the partition plate 12 and gutter 13 and flows into the water tray of the defrosting water treatment device 6, where the high-temperature, high-pressure refrigerant discharged from the compressor 3 is absorbed. It is heated by the heat of the refrigerator, evaporates, and is released into the atmosphere outside the refrigerator. In this way, the defrosting water treatment device 6 and the compressor 3 are arranged close to each other, and the compressor 3
The heat generated is efficiently transferred to the defrost water treatment device. As a result, heat generation in the compressor 3 is suppressed, and energy loss in the refrigeration cycle is reduced. That is, cooling efficiency is improved and power saving can be achieved. The defrosting water treatment device 6 is surrounded by high-temperature air, but since this high-temperature air rises, there is no risk of it coming into contact with the insulation wall of the refrigerator body 1.
It is possible to prevent heat from entering the refrigerator main body 1.

〔Effect of the invention〕

As explained above, according to the present invention, each device constituting the refrigeration cycle and the defrosting water treatment device are provided on the refrigerator main body, and the defrosting water treatment device is installed at the bottom or side of the compressor for compression. The evaporator is placed close enough to directly receive the heat generated by the refrigerator, and is located at a lower position than the evaporator located at the top of the freezer. As a result, a large amount of heat generated by the compressor can be efficiently transferred to the defrosting water treatment device, preventing the compressor and refrigerant from becoming hot, and cooling efficiency is dramatically improved. Furthermore, since the defrosting water treatment device is installed on the main body, the amount of heat caused by the rise in high temperature air generated by evaporated water does not enter the refrigerator. In addition, since the defrosting water treatment device is installed at a lower position than the evaporator, a water pump is not required, and the length of connecting piping between devices can be significantly shortened, resulting in a simpler and more compact structure. Can be done.

[Brief explanation of the drawing]

1 and 2 are vertical sectional views of a conventional refrigerator, and FIG. 3 is a vertical sectional view showing an embodiment of the refrigerator of the present invention. 1... Refrigerator body, 1A... Freezer compartment, 3... Compressor, 4... Condenser, 5... Evaporator, 6... Defrost water treatment device.

Claims (1)

[Claims] 1 A compressor, a condenser, and a defrosting water treatment device are provided on the refrigerator main body, and the defrosting water treatment device is installed at the bottom or side of the compressor and directly receives the heat generated by the compressor. A refrigerator characterized by being placed as close as possible to each other and at a lower position than an evaporator provided at the top of a freezing chamber.