KR940006809Y1 - Refrigerator - Google Patents

Abstract

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Description

Defroster of the refrigerator

1 is a partial cross-sectional view of a refrigerator showing a portion where a defrosting device is installed.

2 is a perspective view showing a conventional device.

3 is a perspective view showing the device of the present invention.

* Explanation of symbols for main parts of the drawings

1: Barrier 2: Evaporator

3: pipe heater 3a: pipe heater extension

4: drain box 5: hole

The present invention relates to a defrosting device for receiving and discharging defrost water falling from the evaporator during the defrosting operation of the refrigerator and melting and discharging the remaining ice. More specifically, a drain box serving as a defrost water receiving device has a good thermal conductivity. It is formed of a material and a pipe heater is connected to the drain box so that the drain box can serve as both a defrost receiver and a plate heater.

1 is a partial cross-sectional view of a refrigerator showing a portion in which a defrosting device is installed. The defrosting device is installed on a barrier 1, which is an intermediate insulation material partitioning a freezer compartment and a refrigerating compartment, and is located below the evaporator 2. .

The conventional defrosting apparatus has a structure in which a drain box 6 made of synthetic resin is provided on the upper surface of the barrier 1 and a plate heater 7 is provided in the drain box, as shown in FIG. In order to facilitate the coupling with the drain box, hot wires 9 were inserted into two aluminum foils 8 and formed.

In the structure, the drain box 6 serves to receive the defrost water falling from the evaporator during the defrosting operation and to discharge the defrost water to the evaporator plate, and the plate heater 7 serves to melt the remaining ice falling from the evaporator.

However, the drain box 6 for receiving the above-mentioned conventional apparatus defrost water and the plate heater 7 for melting the remaining ice are separately configured, and the plate heater is always supplied with power, so the defrost water is always drain box. When flowing between 6 and the plate heater 7, the plate heater heats the temperature of the defrost water above the freezing point irrespective of residual ice removal, resulting in an increase in power consumption.

In addition, when assembling the plate heater 7 to the same shape as the drain box 6 to be assembled on the upper surface of the drain box will cause an increase in the assembly process, the aluminum foil (8) forming the surface of the plate heater is heated ( 9) has an uneven shape to interfere with the flow of cold air, so there is a problem that the flow path resistance is increased to decrease the cooling performance.

The purpose of this paper is to provide a defrosting device that can remove residual ice by using a pipe heater of the evaporator, unlike the conventional apparatus for installing a separate plate heater.

Hereinafter, the present invention will be described in detail with reference to FIG. 3.

FIG. 3 is a perspective view showing the present device, in which the barrier 1, which is an intermediate insulation material, is provided with a metal drain box 4 having good thermal conductivity, and the pipe heater 3 of the evaporator 2 on the outer surface of the drain box. The pipe heater extension part 3a which extended this is connected. Therefore, during the defrosting operation, the pipe heater extension portion 3a generates heat, and the heat is conducted to the drain box 4 to melt the remaining ice falling on the drain box.

In addition, a part of the pipe heater extension part 3a is inserted into the hole 5 formed in the drain box 4 to prevent the pipe heater extension part from escaping from the drain box and to close the pipe heater extension part to the surface of the drain box. .

In the present invention as described above, the pipe heater 3 generates heat during the defrosting operation, and the heat is conducted to the drain box 4 connected to the pipe heater extension part 3a so that the drain box is heated, so that the heat is dropped from the evaporator. Residual ice is melted by the heat of the drain box and discharged to the evaporating dish together with the defrost water.

Therefore, the drain box can serve as a defrosting receiver and a conventional plate heater.

In addition, since the remaining ice can be melted by using the pipe heater of the evaporator, the structure is simpler than the conventional apparatus in which the plate heater is installed, and the assembly process is simplified, resulting in cost savings. It can improve performance.

Claims (3)

A drain box 4 is installed on the barrier 1, which is an intermediate heat insulator, and a pipe heater extension 3a extending from the pipe heater 3 of the evaporator 2 is connected to the drain box so that the drain box is connected by the pipe heater. A defroster of a refrigerator that can be heated. 2. The defroster according to claim 1, wherein a hole (5) is formed in the drain box (4) and a portion of the pipe heater extension (3a) is inserted into the hole so that the pipe heater extension is in close contact with the drain box. 2. The defrosting apparatus of the refrigerator according to claim 1, wherein the drain box (4) is made of metal having good thermal conductivity.