KR200151229Y1 - Cooling air exit control device of refrigerator - Google Patents

Abstract

The present invention relates to a cold air discharge control device of the refrigerator, a damper is provided in the center of the rear wall of the refrigerator compartment is formed with a plurality of discharge holes for discharging the cold air into the refrigerating chamber, and the discharge hole of the damper is provided inside A motor driven to generate power for closing and opening, an operating member installed on the rotating motor shaft by driving the motor and interlocking with the motor shaft, and closing the discharge hole of the damper by the operation of the operating member. And a shutter member for opening and an elastic member for imparting an elastic force in a direction in which the shutter member opens the discharge hole, thereby preventing the rise of the internal temperature and defrosting during defrosting operation or opening of the refrigerating compartment door. It can reduce the power consumption by shortening and damage food due to high temperature inside Thereby it can minimize.

Description

Cold air discharge control device of refrigerator

The present invention relates to a cold air discharge control apparatus of the refrigerator, and more particularly, to control the discharge area of the damper installed in the refrigerator compartment of the refrigerator at the time of defrosting or opening the refrigerator compartment door.

Generally, an evaporator and a fan are installed in a refrigerator refrigerator (freezer and freezer). As the compressor operates, the evaporator cools the surrounding air by heat exchange of the refrigerant when the liquid refrigerant inside the evaporator evaporates. Is forced to circulate the cooled air around the evaporator into the air.

At this time, the surface of the evaporator freezes the frost due to freezing of the surrounding moisture, which must be properly removed because such a castle significantly reduces the cooling efficiency of the evaporator and increases the load operation rate.

Accordingly, a defrost heater that is electrically heated to dissolve the frost is wired together with the refrigerant pipe in the evaporator of the refrigerator, and during operation of the refrigerator, the defrost heater is operated by removing the frost in addition to the cooling mode for maintaining the temperature in the refrigerator. Defrost mode is included.

Looking at the structure of such a conventional refrigerator, as shown in Figure 1, the freezer compartment 14 and the refrigerating compartment 1 is installed in the upper and lower portions of the refrigerator main body 13 having a heat insulating structure, each freezer compartment 14 And the freezer compartment and the refrigerating compartment doors 15 and 11 are installed to be opened and closed in the refrigerating compartment 1, and the refrigerating compartment 1 is divided into multiple layers by a plurality of shelves 16 for placing food.

In addition, a compressor 18 is installed in the machine room 17 at the lower side of the refrigerator main body 13, and a condenser and a pressure reducer (not shown) are embedded in the refrigerator main body 13, or installed in the machine room 17. When the compressor 18 is operated, an evaporator 10 for cooling the ambient air by heat exchange of the refrigerant to generate cold air in the refrigerator is installed at the rear wall of the freezing chamber 14 and the refrigerating chamber 1, The interconnection leads to a refrigeration cycle.

In addition, a cooling fan 19 is installed at an upper portion of the evaporator 10 to forcibly blow cold air generated in the evaporator 10 to the freezing chamber 14 and the refrigerating chamber 1, and at the center of the rear wall of the refrigerating chamber 1. The operation of the refrigerator is performed by installing a rotary vane 12 which is approximately the same height as the height of the refrigerating compartment 1 and rotated to distribute the cold air flow path and the cold air in the damper 3a installed at the center of the rear wall of the refrigerating compartment 1. When the rotary blade 12 rotates to distribute the cold evenly.

On the other hand, in the defrost mode for removing the frost frozen in the evaporator in such a refrigerator, there are various methods depending on the type of operation or the method of melting the frost, but the defrosting operation lasts a relatively long time so that the temperature inside the refrigerator is high. While still rising, since the compressor 18 and the cooling fan 19 cannot be operated, the food stored in the refrigerator is damaged by the temperature rise in the refrigerator.

Accordingly, the compressor 18 and the cooling fan 19 are continuously operated for a predetermined time (several minutes) before entering the defrost mode to prevent the food from being damaged due to the rise in the temperature during the defrosting operation. The pre-cool mode is performed first, and the defrost mode is performed immediately after performing the pre-cool mode.

However, in the conventional refrigerator, the temperature of the evaporator 10 is significantly lowered by preliminary cooling during the defrosting operation, and when the defrost heater (not shown) is operated in this state, the evaporator 10 The time to melt the frost frozen in, ie the defrost time will be that long. For the above reason, when the defrosting time becomes longer, heat generated in the heater flows into the interior of the refrigerator, thereby increasing the interior temperature. This increases the power consumption for pure defrosting required for the operation of the defrost heater, as well as the power consumption for the overall defrosting, including power consumption according to load operation for preliminary cooling, as well as for preliminary cooling. Including the power consumption according to the load operation, the power consumption of the entire defrost was high.

In addition, when the user opens and closes the freezer compartment and the refrigerating compartment doors 15 and 11 for use of the refrigerator, the temperature rises in the vicinity of the freezer compartment and the refrigerating compartment doors 15 and 11. When the refrigerating compartment door 11 which is frequently used is opened, the temperature inside the refrigerator increases as cold air in the refrigerating compartment 1 flows out of the refrigerator and hot air is introduced into the refrigerating compartment 1 and the evaporator 10. Because of this, as well as the above-mentioned increase in power consumption during defrosting operation, there are many problems such as damage to food stored in the refrigerator compartment door 11 and the like, which often lowers the reliability of the product.

The present invention is to solve the above-mentioned problems, it is possible to control the discharge area of the damper installed in the refrigerator compartment of the refrigerator at the time of defrosting or defrosting when opening the refrigerating chamber door, consumption by shortening the defrosting operation time It is an object of the present invention to provide a cold air discharge control device of a refrigerator that can reduce power and minimize damage of food stored in the refrigerator due to a rise in temperature.

1 is a longitudinal cross-sectional view showing a conventional refrigerator.

Figure 2 is a longitudinal sectional view showing a refrigerator according to the present invention

3 is a perspective view showing the damper of FIG.

4a and 4b are cross-sectional views showing the operating state of the damper shown in FIG.

Explanation of symbols on the main parts of the drawings

One; Cold room 2; Discharge hole

3; Damper 4; motor

5; Motor shaft 6; Working member

7,7a; Guide rail 8; Shutter member

9; Elastic member

In order to achieve the above object, the present invention provides a damper formed at the center of the rear wall of the refrigerating chamber and having a plurality of discharge holes for discharging cold air into the refrigerating chamber, and the discharge hole of the damper is closed and opened. A motor driven to generate power for driving the motor, an actuating member installed on the motor shaft rotating by the driving of the motor and interlocking with the motor shaft, and closing and opening the discharge hole of the damper by actuation of the actuating member. It is achieved by providing a cold air discharge control apparatus for a refrigerator composed of a shutter member and an elastic member for imparting an elastic force in a direction in which the shutter member opens the discharge hole.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in detail as follows.

Figure 2 is a longitudinal sectional view showing a refrigerator according to the present invention, Figure 3 is a perspective view showing the damper of Figure 2, Figures 4a and 4b is a cross-sectional view showing the operating state of the damper shown in Figure 3, the present invention is a refrigerator In the center of the rear wall of the refrigerating chamber 1, dampers 3 having a plurality of discharge holes 2 for discharging cold air into the refrigerating chamber 1 are provided on both sides of the front surface, and a defrosting operation is performed in the upper center of the damper 3. A motor 4 driving in both directions is provided to generate power for closing and opening the discharge hole 2 of the damper 3 at the time of opening the door or the refrigerating compartment door and discharging the cold air.

In addition, the motor shaft 5 which is rotated by the driving of the motor 4 is provided below the motor 4, and the motor shaft 5 is provided in the motor shaft 5 between the respective discharge holes 2 in the damper 3. An operating member 6 interlocked with (5) is provided, and the guide rails 7 and 7a formed on the upper and lower portions of the respective discharge holes 2 in the damper 3 are in contact with the operating member 6. The shutter member 8 is provided for closing and opening the discharge hole 2 of the damper 3 by the guide rails 7 and 7a by the operation of the operating member 6.

Then, an elastic force in the direction in which the shutter member 8 opens the discharge hole 2 between the end of the guide rail 7a formed below each discharge hole 2 in the damper 3 and the shutter member 8. An elastic member 9 made of a spring for imparting is provided.

When described in detail with reference to the accompanying drawings, the operation of the present invention configured as described above.

When the plurality of discharge holes 2 formed in the front of the damper 3 for discharging the cold air into the refrigerating chamber 1 in the center of the rear wall of the refrigerating chamber 1 of the refrigerator is opened as shown in FIG. It is supplied to the inside of the refrigerating chamber 1 through (2).

Then, when the refrigerator enters the defrost mode in order to remove the frost frozen in the evaporator 10, a separate sensing means for detecting the temperature in the refrigerator is detected and at the same time, the motor 4 installed in the upper center of the damper 3 is detected. ) Will be driven.

At the same time, each discharge hole 2 in the damper 3 is driven as the motor 4 drives in the forward direction and the motor shaft 5 installed below the motor 4 is rotated under the rotational force of the motor 4. The operating member 6 installed on the motor shaft 5 between the < RTI ID = 0.0 >) < / RTI > The shutter member 8, which is in contact with the operation member 6 and is installed to be horizontally movable by the guide rails 7 and 7a, is advanced to move the discharge hole 2 of the damper 3 in a state as shown in FIG. 4B. By closing, the heat generated from the defrost heater during the defrosting operation can be completely blocked from flowing through the interior of the damper (3).

When the defrosting operation of the refrigerator is completed by the operation as described above, the motor shaft is rotated by driving the motor 4 in the reverse direction again in the state in which the discharge hole 2 of the damper 3 is closed in the state as shown in FIG. 4B. 5) the rotational force of the motor 4 is transmitted so that the operation member 6 rotates in the counterclockwise direction and at the end of the guide rail 7a formed under each discharge hole 2 in the damper 3. Between the shutter member 8 and the shutter member 9 by the elastic restoring force of the spring-like elastic member 9 for imparting an elastic force in the direction in which the shutter member 8 opens the discharge hole 2. By retreating to the original position and opening the discharge hole 2 of the damper 3 in a state as shown in FIG. 4A, the cool air can be smoothly supplied into the refrigerating chamber 1 through the discharge hole 2.

On the other hand, even when the user opens the refrigerating compartment door 11, as the separate sensing means detects the open state of the refrigerating compartment door 11, the discharge hole 2 of the damper 3 is closed in the same operation as described above. Therefore, the outside hot air can be prevented from penetrating into the evaporator 10 through the damper 3, and by using the rotary vanes 12 inside the damper 3, the more powerful cold air is stored in the refrigerating chamber 1 It can be discharged inside.

As described above, it is possible to prevent the temperature rise in the refrigerator during defrosting operation of the refrigerator or opening of the refrigerating compartment door, thereby effectively maintaining a constant temperature, and reducing the time required for defrosting, thereby reducing the power consumption of the refrigerator. It is possible to minimize the damage to the food stored in the store due to the temperature rise in the store.

As described above, the present invention can adjust the discharge area of the damper installed in the refrigerating compartment of the refrigerator at the time of defrosting or opening the refrigerating compartment door, thereby preventing the rise of the internal temperature, consumption consumption by shortening the defrosting time It is a very useful design that can greatly reduce the power and greatly improve the efficiency and reliability of the product because it can suppress the damage to the food stored in the high temperature to the maximum limit.

The present invention is not limited to the above-described specific preferred embodiment, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (5)

A damper installed at the center of the rear wall of the refrigerating chamber and having a plurality of discharge holes for discharging cold air into the refrigerating chamber; A motor installed inside the damper and driving to generate power for closing and opening the discharge hole of the damper; An operating member installed on the rotating motor shaft by the driving of the motor and interlocked with the motor shaft; A shutter member for closing and opening the discharge hole of the damper by the operation of the operating member; And the shutter member comprises an elastic member for imparting an elastic force in a direction of opening the discharge hole. The apparatus of claim 1, wherein the motor is driven in both directions. The apparatus of claim 1, wherein the operating member is provided on a motor shaft between respective discharge holes in the damper. The cold air discharge control apparatus according to claim 1, wherein the shutter member is installed to be in contact with the operation member so as to be horizontally movable on guide rails formed above and below each discharge hole in the damper. The cold air discharge control apparatus according to claim 1 or 4, wherein the elastic member is provided between the end of the guide rail formed below each discharge hole in the damper and the shutter member.