JPS6216629Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a refrigerator that performs refrigerated storage or frozen storage, and the object thereof is to prevent the defrosting water receiver of the cooler and the drain pipe from freezing.

Conventionally, as shown in FIG.
An anti-freezing heater 7' was installed in the tank to prevent freezing of the area around the drainage receiving part by the cold air falling from the cooler 2'. However, even if the heater 7' is attached to the drain receiving part 6', heat tends to escape to the upper part, and the area near the drain pipe entrance 10' cannot be said to be sufficiently heated by the heater 7', requiring a larger capacity than necessary. Moreover, the number of man-hours and parts required to attach the heater 7' was large, and the workability and cost efficiency were not sufficient.

The present invention has been developed to overcome the above-mentioned conventional drawbacks, and one embodiment thereof will be described below with reference to the accompanying drawings.

In the figure, 1 is the main body of the refrigerator, and outer box 2
, an inner box 3 , and a heat insulating material 4 such as polyurethane foam filled between the two boxes 2 and 3 . 5
is a plate-shaped cooler arranged parallel to the back surface of the inner box 3. 6 is a dish-shaped drainage receiver formed integrally with the inner box 3 with a gap at the lower end of the cooler 5;
A drainage hole 7 is provided at its bottom. 8 is a machine room 1 that houses a drain hole 7 at one end and a compressor 9 at the other end.
This is a drainage pipe buried in the heat insulating material 4 so as to open on the top surface 10a of the storage unit 0. This drain pipe 8 has a small diameter part 8a (inner diameter of about 10 mm) at the upper end and a large diameter part 8b (inner diameter of about 20 mm).
is about 20mm from the top edge. Further, 11 is a mounting flange. 12 is a defrost water evaporation dish placed on the upper surface of the compressor 9. Reference numeral 13 denotes a rear extension portion that hangs down close to the lower opening 8c of the drain pipe 8.

According to this configuration, the hot air in the machine room 10 rises inside the large diameter section 8b of the drain pipe 8, and rises inside the small diameter section 8a.
Additionally, the area around the drain hole 7 of the drain receiver 6 is heated to prevent freezing. At this time, due to the presence of the small diameter portion 8a, a large amount of hot air is not introduced into the refrigerator, and the increase in frost formation on the cooler 5 and the rise in the temperature inside the refrigerator are the same or lower than those with a separate heater. . In addition, since the rear side extension part 13 is provided integrally with the outer box 2 in close proximity to the lower opening 8c, it promotes the accumulation of warm air.
This makes it easy to introduce hot air into the drain pipe 8.

In this way, the present invention actively guides the hot air generated in the machine room housing the compressor into the drain pipe using the large diameter part of the drain pipe, and the small diameter part of the drain pipe and around the drain hole of the drain receiver. Since it heats water, it is possible to reliably prevent freezing of the drain receptacle and the entrance of the drain pipe into the refrigerator, and there is no need for a special heater as in the past, reducing the number of parts and assembly man-hours, and eliminating the need for a heater. This makes it possible to reduce power consumption and improve energy savings.

In addition, since the diameter of the drain pipe is reduced near the drain receiver, hot air is prevented from flowing into the refrigerator from the small diameter part, and a large amount of hot air is not introduced into the refrigerator.
The temperature inside the refrigerator increases only slightly, allowing for cooling inside the refrigerator without any problems.

[Brief explanation of the drawing]

Fig. 1 is a front view of a refrigerator showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line - Fig. 1, Fig. 3 is an enlarged sectional view of the part a in Fig. 2, and Fig. 4 is a FIG. 3 is an enlarged sectional view of a conventional example corresponding to FIG. 3; 2...outer box, 3...inner box, 4...insulation material, 6...
...Drainage receiver, 8a...Small diameter part, 8b...Large diameter part, 8
...Drainage pipe.

Claims (1)

[Scope of utility model registration request] An inner box and an outer box, a heat insulating material filled between the inner box and the outer box, and an upper end that communicates with a drainage hole of a drainage receiver provided in a part of the inner box and a lower end that penetrates the outer box and is compressed. A drainage pipe buried in the insulation material so as to open on the top of the machine room where the compressor is housed, and a defrosting water placed on the top surface of the compressor located below the opening of the drainage pipe and evaporating the defrosting water. a refrigerator, wherein the drain pipe has a small diameter portion and a large diameter portion, and the small diameter portion is located only near the drain receiver.