KR100255949B1 - Cool air ventilation apparatus of a refrigerator - Google Patents

Abstract

PURPOSE: A cooling air blower apparatus is provided to prevent foodstuff stored in the refrigerator from being super-cooled and to maintain freshness of foodstuff, by concentrically supplying cooling air to the new load. CONSTITUTION: An apparatus comprises a plurality of temperature sensors(50) attached to the wall of the refrigerating compartment positioned adjacent to a shelf, which sense the temperature of the refrigerating compartment in accordance with whether the foodstuff is placed onto the shelf; a plurality of control units(52,54) for controlling signals based on outputs from temperature sensors; and a cooling air blower unit connected to each of control units which concentrically supplies cooling air to the new load. The cooling air blower unit includes a driving motor(62) fixed to the rear wall of the refrigerating compartment which is positioned adjacent to a damper(26), a rotating member(64) forcibly coupled with a rotation shaft(62a) of the driving motor which has a cam slot(64a) formed along the outer periphery of the rotation member, and a blower blade(66) having an end inserted into the cam slot of the rotating member which executes a pendulum motion in a vertical plane.

Description

Cold air blower of refrigerator

The present invention relates to a cold air blower of a refrigerator, and more particularly, to a cold air blower of a refrigerator that can intensively blow cold air only to a new refrigerated object that is administered into the refrigerator compartment to prevent overcooling of the already stored refrigerated object. It is about.

In general, the refrigerator and the refrigerating chamber of the refrigerator is provided with a fan for blowing the forced air for cooling the evaporator and the cold air around the evaporator. The evaporator takes in the latent heat of evaporation while cooling the ambient air while the liquid refrigerant having the lower internal pressure is introduced by the action of the capillary tube.

Then, the low temperature low pressure liquid refrigerant discharged from the evaporator is sent to the compressor again, converted to a high temperature and high pressure gas refrigerant is sent to the compressor. The refrigerant sent to the compressor is liquefied by the condenser and decompressed again in the capillary tube to form a refrigeration cycle.

Conventional blower for blowing the cold air circulated in the refrigeration cycle into the refrigerator, as shown in Figures 1 and 2, the refrigerator body 10 made of a heat insulating structure is a freezing and refrigerating chamber (10a) (10b) It is divided into, and the front and main body 10, the freezing and refrigerating chamber doors 12, 14 are coupled to open and close to seal the inside of the freezing and refrigerating chamber (10a) (10b), the food inside the refrigerating chamber (10a) The shelves 16 are mounted in multiple layers so as to place a refrigeration object such as a back.

The machine room 18 at the lower side of the refrigerator main body 10 is provided with a compressor 20 for compressing low-temperature low-pressure gas refrigerant to high temperature and high pressure, and a condenser (not shown) for liquefying the gas refrigerant, and the freezing and refrigerating chamber 10a. On the rear wall of the fan 10b, an evaporator 22 for cooling ambient air while evaporating the gas refrigerant provided from the compressor 20 and a fan 24 for forcibly cooling the cool air into the freezer and refrigerating chambers 10a and 10b are installed. do.

In the center of the rear wall of the refrigerating chamber 10a, a damper 26 having a plurality of discharge holes 26a is integrally mounted, and a driving motor 28 is fixed to one side of the damper 26 by a bracket 30, and the driving motor The cylindrical rotating member 32 is press-fitted into the rotating shaft 28a of the 28. As shown in FIG.

In addition, a plurality of cam grooves 32a are formed in the rotating member 32, and one end of the blower vane 36 coupled to the hinge 34 with respect to the refrigerator main body 10 is fitted in the cam grooves 32a. The air vane 36 is positioned to correspond to the discharge hole 32a of the damper 32.

The conventional cold air blower configured as described above takes the latent heat of evaporation from the evaporator 22 when the compressor 20 is operated to store the refrigerated objects mounted on the shelf 16 mounted in the refrigerator compartment 10b in multiple layers for a long time. Cooling the surrounding air, while the fan 24 provided on one side of the evaporator 22 rotates at high speed, the cold air flow path (10c) formed between the freezer compartment (10a) and the refrigerator main body (10) and the damper (26) Will flow along.

At this time, as the rotary member 32 located in the cold air flow path 10c is rotated in the forward and reverse directions by the driving force of the driving motor 28, one end of the blower blade is inserted into the cam groove 32a of the rotary member 32. The refrigeration 36 is stored on the shelf 16 by blowing cold air into the refrigerating chamber 10b through the discharge hole 26a of the damper 26 while moving up and down about the hinge 34. The object will cool down quickly.

However, since the entire interior of the refrigerating compartment is cooled by inserting a plurality of blades for blowing air into one rotating member as described above, when a new refrigerating object is put on the shelf of the refrigerating compartment and then cooled, the refrigerating object already placed on the other shelf Cooling down as well as refrigerated foods as well as there was a problem that the freshness is lowered.

The present invention is to solve the above problems, the object of the present invention is to blow the cold air intensively on the shelf where the new refrigeration object is placed to prevent overcooling of the already stored refrigerated food, as well as to maintain the freshness for a long time It is to provide a cold air blower of the refrigerator.

1 is a longitudinal sectional view showing a cold air blower of a conventional refrigerator;

2 is an enlarged perspective view of the cold air blower of FIG. 1;

3 is a perspective view showing a cold air blower of the refrigerator according to the present invention;

4 is a longitudinal sectional view showing a state where a cold air blower according to the present invention is applied to a refrigerator.

Explanation of symbols on the main parts of the drawings

10: main body 10c: cold air flow path

16: shelf 26: damper

26a: discharge hole 50: temperature sensor

52, 54: first and second control section 56, 58: first and second blowing section

60: bracket 62: drive motor

62a: rotating shaft 64: rotating member

64a: cam groove 66: blowing wing

68: hinge

A feature of the present invention for achieving the above object is, the shelf is equipped with a damper having a discharge hole in the center of the rear wall of the refrigerating chamber is installed in a multi-layer, cold air cooled by the evaporator is installed on the rear side of the damper the shelf A cold air blower of a refrigerator provided to blow air to a refrigerated object placed on the floor, the apparatus comprising: a plurality of temperature sensing sensors attached to a wall of the refrigerating chamber and sensing the temperature of the refrigerating chamber according to whether the refrigerated object is placed on the shelf Wow; First and second controllers for inputting signals sensed by the temperature sensors; It is achieved by providing cold air blowing means connected to the first and second control units respectively to intensively blow cold air only to a new refrigeration object stored on the shelf.

The cold air blowing means according to a preferred embodiment of the present invention is achieved by having first and second blowing parts located on the rear side of the damper.

The first and second blowers according to the present invention is one end is inserted into the drive motor fixed by the bracket to provide a driving force, the rotary member is pressed into the rotary shaft of the drive motor and the cam groove formed on the rotary member in the up and down directions It is achieved by being equipped with pendulum blowing blades.

Hereinafter, a preferred embodiment of a cold air blower of a refrigerator according to the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 is a view showing a cold air blower according to the present invention, the refrigerator main body 10 is divided into a freezing and freezing chamber (10a) and a refrigerating chamber (10b), in the center of the rear wall of the refrigerating chamber (10b) 10b) A damper 26 having a plurality of discharge holes 26a is integrally mounted to discharge cold air therein, and the shelves 16b are multi-layered in order to place refrigerated objects such as refrigerated food in the refrigerator compartment 10b. These shelves 16 are located below the discharge hole 26a.

On the wall surface of the refrigerating compartment 10b, a plurality of temperature sensors 50 are attached to detect the temperature of the refrigerating compartment 10b according to whether the refrigeration object is placed on the shelf 16, and the temperature sensor 50 Are connected to the first and second controllers 52, 54 for controlling the cold air blowing means, respectively.

Cold air blowing means is provided in the cold air flow path (10c) formed in the refrigerator main body (10) is provided with the first and second blowers (56, 58) connected to the first and second control units (52, 54), The first and second blowers 56 and 58 are fixed to the bracket 60 to provide the driving motor 62 and the cam groove 64a pressed into the rotation shaft 62a of the driving motor 62 to provide driving force. Blowing blades 66, one end of which is fitted into the rotating member 64 and the cam groove 64a.

In addition, the blower wing 66 is coupled to the hinge 68 so that the pendulum can move up and down on the wall surface of the cold air flow path 10c, and the blower wing 66 is discharge hole 26a of the damper 26. Is located to correspond to.

Referring to the operation of the cold air blower according to the present invention configured as described above in detail.

When the compressor 20 is operated to store the refrigeration object on the shelf 16 installed in the refrigerator compartment 10b in multiple layers for long time storage, the latent heat of evaporation is removed from the evaporator 22 to cool the surrounding air, and the evaporator 22 is operated. The fan 24 installed at one side of the fan 24 rotates at high speed and flows cold air along the cold air passage 10c formed between the refrigerator main body 10 and the damper 26.

At this time, the temperature sensor 50 attached to the wall surface of the refrigerating chamber (10b) after detecting the temperature inside the high temperature changed by the refrigeration object administered on the shelf 16, the first and second control unit 52 to detect the detected signal If it is transmitted to 54, the first and second control units 52 and 54 drive the first and second blowers 56 and 58.

Thereafter, when the rotary member 64 press-fitted to the rotary shaft 62a of the drive motor 62 constituting the first and second blowers 56 and 58 is rotated, the cam groove 64a of the rotary member 64 is rotated. The blower blade 66 whose one end is fitted into the air outlet pendulum moves up and down about the hinge 68 and discharges cold air to the discharge hole 26a of the damper 26, thereby quickly discharging the object to be refrigerated. To cool.

Meanwhile, when a new refrigeration object is placed on at least one shelf 16 among the shelves 16, the temperature around the refrigeration object is sensed by the temperature sensor 50. When the detected signal is sent to the first control unit 52, the first control unit 52 rotates the RPM of the driving motor 62 constituting the first air blowing unit 56 rather than the second air blowing unit 58. At the same time, the blowing blade 66 fitted in the helical cam groove 64a of the rotating member 64 is rapidly pendulumed in the up and down directions to intensively cool only the newly administered refrigeration object.

As described above, according to the cold air blower of the refrigerator according to the present invention, by intensively blowing cold air to a shelf on which a new refrigeration object is placed, it is possible to prevent overcooling of the already stored refrigerated food and to maintain freshness for a long time.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art 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 (3)

A damper having a discharge hole is mounted in the center of the rear wall of the refrigerating chamber in which the shelves are formed in multiple layers. In A plurality of temperature sensors attached to a wall of the refrigerating compartment adjacent to the shelf and configured to sense a temperature of the refrigerating compartment according to whether the refrigeration object is placed on the shelf; A plurality of controllers for controlling each signal sensed by the temperature sensors; It is connected to each of the control unit, provided with cold air blowing means for blowing the cold air intensively only to a new refrigeration object received on the shelf, The cold air blowing means includes a driving motor installed on a bracket firmly fixed to a rear wall of the refrigerating chamber adjacent to the damper, a rotating member having a cam groove press-fitted to the rotating shaft of the driving motor and inclined along a circumference, and a cam groove of the rotating member. Cooling air blower of the refrigerator, characterized in that provided with a blade for blowing pendulum movement up and down by rotation. The cold air blower of claim 1, wherein the cold air blower controls an air blowing amount of cold air according to an ambient temperature of the cold object when a new cold object is placed on the shelf. The cold air blower of claim 1, wherein the blower vane is hinged to an inner wall surface of the cold air flow path formed between the damper and the rear wall of the refrigerating chamber so as to correspond to the discharge hole of the damper.

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