KR200220616Y1 - A defrosting device of a refrigerator - Google Patents

Abstract

The present invention relates to a defrosting apparatus of a refrigerator that can evenly transfer the heat of the defrost heater to the entire evaporator, conventionally defrost heaters emitted from the defrost heater is not evenly spread to the evaporator side part of the frost formed on the evaporator defrost There was a problem that could not be.

The present invention is an extension part which is formed from the lower side to the upper side between the housing of the tubular body surrounding the defrost heater and a pair of refrigerant pipes spaced apart at regular intervals and formed a plurality of vertically integrally and spaced apart in parallel to each other. As a heat conductor having a torsional portion where one side of the extension part is twisted, it is designed to efficiently remove the frost on the evaporator by allowing the heat of the defrost heater to be evenly distributed to every corner of the evaporator when the defrost heater is heated. .

Description

Defroster of refrigerator {A DEFROSTING DEVICE OF A REFRIGERATOR}

The present invention relates to a defrosting apparatus of a refrigerator, and more particularly, to a defrosting apparatus of a refrigerator capable of transmitting heat of the defrost heater evenly to the entire evaporator.

In general, a refrigerator may supply cold air obtained by repeatedly circulating a refrigerant along a predetermined cooling cycle to a freezing compartment or a refrigerating compartment to freeze or refrigerate stored foods stored in each refrigerator, thereby keeping the stored foods fresh for a long time. It is a home appliance.

1 is a side cross-sectional view of a refrigerator showing a cooling device and a defrosting device of a conventional refrigerator.

Referring to FIG. 1, a rear side of the freezer compartment F is provided with a separate cooler chamber 1 separated from the freezer compartment F, and the cooler chamber 1 has cold air by a predetermined cooling cycle. An evaporator 2 to be produced, a defrost heater 3 for defrosting, and a blowing fan 6 for forcibly cooling cold air to the freezing chamber F and the refrigerating chamber R are provided.

The defrost heater 3 is a sheathed heater having a sheath of a heat conductor.

The exterior of the external heater is formed of aluminum having excellent thermal conductivity.

Some of the cold air generated in the cooler chamber (1) is forcibly guided by the blower fan (6) to the freezer compartment (F) through the cold air supply hole (not shown) formed in the ventilation window insulation (5) and the freezer compartment ventilation window (4). It has a series of freezing chamber cold air circulation structure that is directly supplied to the refrigerator compartment (1) through the return passage (8a) formed in the thermal barrier (7) after cooling the stored article stored in the interior.

On the other hand, the other cool air generated in the cooler chamber (1) through the heat insulating wall behind the cooler chamber (1) up and down by a separate blowing fan to ride the main passage (9) communicating with the refrigerating chamber (R) in the refrigerating chamber ( R) has a series of refrigerating chamber cold air circulation structure that cools the stored article stored in the interior of the refrigerator and returns to the cooler chamber 1 via the return passage 8b formed in the thermal insulation partition wall 7.

As described above, in the process of repeatedly circulating the cold air through the cold air circulation structure, a large amount of moisture is returned to the cold and double air cooler chambers 1 so that the high temperature and high humidity is frosted on the evaporator 2 and freezes at the same time. In the frost is generated.

Therefore, the defrost heater 3 is operated to remove such frost.

However, there is a problem in that a part of the frost formed on the evaporator cannot be defrosted because the defrost heater radiated from the defrost heater is not evenly distributed to the evaporator side.

The present invention has been made to solve the above-mentioned problems of the prior art, the object of the present invention is to evaporate the elongator of a long rectangular plate-like heat radiation fin having a certain thickness integrally formed in the tubular body of the thermally conductive material surrounding the defrost heater It is to provide a defrosting apparatus of the refrigerator installed so as to extend from the lower side to the upper side between the refrigerant pipes of the defrost heater to evenly transfer the heat of the defrost heater to every corner of the evaporator.

1 is a side cross-sectional view of a refrigerator showing a cooling device and a defrosting device of a conventional refrigerator;

2 is a perspective view showing a defrosting device of a refrigerator according to the present invention;

3 is a perspective view illustrating an exterior of a tubular body and a heat dissipation fin that surround a defrost heater;

Explanation of symbols on the main parts of the drawings

20: evaporator, 22: refrigerant pipe,

24: side plate support, 26: cooling fin,

28: defrost heater, 30: thermal conductor.

30a: tubular body, 30b: heat dissipation fin,

30c: torsional portion.

In order to achieve the above object, a feature of the defrosting apparatus of the refrigerator according to the present invention is a defrosting apparatus of a refrigerator having a defrost heater installed at the lower side of the evaporator so as to remove frost formed on the refrigerant pipe of the evaporator. And a heat conductive sheath surrounding the defrost heater, wherein the sheath comprises a tubular body and a plurality of heat dissipation fins integrally formed vertically spaced apart from each other in the longitudinal direction, and the heat dissipation fins are lowered between the refrigerant pipes. It is configured to include a twist portion extending to the upper side in the twist.

Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be better understood by the specific description of the embodiment of the present invention.

Figure 2 is a perspective view showing a defrosting apparatus of the refrigerator according to the present invention, Figure 3 is a perspective view showing the heat conductive exterior of the defrost heater.

Referring to FIGS. 2 and 3, an evaporator 20 generating cold air by a predetermined cooling cycle directly below a cooler chamber (not shown), and an evaporator 20 directly below the evaporator 20). Defrost heater 28 and the like which is an external heater for removing frost formed on the.

The evaporator 20 is formed by arranging the refrigerant pipes 22 in two rows while maintaining a state in which the refrigerant pipes 22 are bent a plurality of times and arranged up and down at a predetermined interval.

A side plate support 24 is provided to fix the bent both ends of the refrigerant pipe 22 so that the refrigerant pipe 22 is maintained at regular intervals in the vertical direction.

In addition, a plurality of cooling fins 26 are attached to the refrigerant pipe 22 of the evaporator 20 to maximize the contact area of the refrigerant flowing through the refrigerant pipe 22.

Meanwhile, the exterior 30 surrounding the defrost heater 28 includes a tubular body 30a and a plurality of heat dissipation fins 30b integrally formed at a predetermined interval and vertically spaced apart from the tubular body, and the heat dissipation fins 30b. They are formed in the form of an elongate rectangular plate of thermally conductive material having a constant thickness, extending from bottom to top between a pair of refrigerant pipes 22 arranged in parallel.

In addition, a 90 ° twisted portion 30c is formed below each of the heat radiation fins 30b to be easily inserted from the lower side to the upper side between the refrigerant pipes 22.

The exterior 30 is preferably made of a material having excellent thermal conductivity and corrosion resistance, for example, aluminum coating on aluminum or a rigid body.

The defrosting heater 28 generates defrost water while the frost formed on the surface of the evaporator 20 is removed during the heating of the defrost heater 28, and the defrosting water may be easily contacted because the sheath 30 may be easily contacted. This is to allow the heat of the defrost heater 28 to be well transmitted to every corner of the evaporator 20 without being corroded.

As described above, the present invention provides a long rectangular plate-shaped heat dissipation fin having a thickness formed integrally with the tubular body surrounding the defrost heater so as to extend from the lower side to the upper side between the refrigerant pipes of the evaporator to generate the defrost heater. By allowing the heat of the defrost heater to be evenly distributed to every corner of the evaporator, the frost formed on the evaporator can be efficiently removed.

Claims (1)

In the defrosting apparatus of the refrigerator provided with a defrost heater installed in the lower portion of the evaporator to remove frost formed on the refrigerant pipe of the evaporator, And a sheath 30 of a thermally conductive material surrounding the defrost heater, wherein the sheath is a plurality of heat dissipation fins 30b integrally formed on the tubular body 30a and the tubular body at a predetermined interval and vertically spaced apart. And the heat dissipation fins 30b have a torsional portion 30c, the lower end of which is twisted 90 ° so as to extend from the lower side to the upper side between the pair of refrigerant pipes 22 spaced apart from each other in parallel with each other. Defroster of refrigerator.