KR19990023970U - Refrigerator compartment temperature control - Google Patents

Abstract

The present invention relates to a refrigerator compartment temperature control device, wherein a cooling control means for controlling the discharge amount of the cold air is provided on the rear side of the refrigerator compartment partitioning the refrigerator main body, and the cold air control means is provided in the refrigerator compartment. The setting means for setting the temperature to the initial set value is engaged, the sensing means for moving the cold air control means in the up and down direction according to the sensed temperature is engaged in the setting means, the temperature distribution in the interior In addition to maintaining the uniformity of the temperature control device can improve the productivity and quality of the thermostat itself, in particular can reduce the cost.

Description

Refrigerator compartment temperature control

The present invention relates to a refrigerator compartment temperature controller of the refrigerator, and more particularly, to a refrigerator compartment temperature controller for controlling the amount of cold air discharged into the refrigerator of the refrigerator compartment to maintain a temperature suitable for the storage of the refrigerated food.

In general, the refrigerator and the refrigerating chamber of the refrigerator is provided with a fan for forcibly blowing the cold air cooled around the evaporator and 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 back to the compressor to convert the gas refrigerant of high temperature and high pressure, and then liquefied by the condenser to reduce the pressure in the capillary tube again to form a refrigeration cycle.

Conventional temperature control device for controlling the temperature of the refrigerating chamber that is changed according to the cold air discharged into the refrigerator while being circulated in the refrigeration cycle, as shown in Figures 1 and 2, the refrigerator body 10 made of a heat insulating structure Refrigerated and refrigerating compartment (10a) (10b) is divided into, and the front and rear of the main body 10 to freeze and refrigerating chamber doors (12, 14) to seal the interior of the freezing and refrigerating compartment (10a, 10b) is coupled to open and close In the refrigerating chamber 10a, shelves 16 are mounted in multiple layers so as to place refrigeration objects such as food.

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.

The thermostat 30 is mounted on the rear surface of the refrigerating chamber 10b to control the discharge amount of the cold air cooled from the evaporator 22 to adjust the temperature of the refrigerating chamber 10b to a set value. The thermostat 30 is press-fitted to the shaft of the handle portion 34 and the handle portion 34 rotatably mounted on the front surface of the case 32 and on the outer circumferential surfaces of the cam 36 and the cam 36 rotating together. One end is in contact with the arm 38 hinged in the case 32, one end is connected to the arm 38, the other end is fixed with a fixing pin 40, the cold air discharged into the refrigerating chamber (10b) It is provided with a damper 46 for opening and closing the cold air flow path (10c) is fixed to the end of the lever 42 and the control spring 44 connected thereto and the lever 42 for controlling it.

In the refrigerating chamber 10b, a filler 48 for sensing a temperature change in the refrigerator is located, and the filler 48 is connected to a gas-filled diaphragm 50.

The conventional temperature controller configured as described above rotates the handle 34 mounted to the case 32 to set the temperature in the refrigerator to a set value in order to cool the refrigerated food stored in the refrigerating chamber 10b and to store it for a long time.

That is, when the handle 34 is rotated, as the cam 36 pressed into its shaft rotates together, the arm 38 is pushed in one direction to pull the adjustment spring 44 connected to the lever 42. In addition, the lever 42 rotates around the fixing pin 40 and moves the damper 46 fixed at the end thereof, thereby closing the cold air passage 10c to prevent overcooling of the refrigerating chamber 10b. At this time, the compressor 20 and the evaporator 22 maintain the stopped operation.

Then, when the temperature in the refrigerator rises above the set value by opening and closing the refrigerator compartment door 14 or storing new refrigerated food on the shelf 16, the filler 48 detects the changed temperature in the refrigerator and at the same time the gas pressure. The diaphragm 50, which is expanded by the change of, pushes the lever 42 to open the damper 46 which seals the cold air flow path 10c.

As the compressor 20 and the evaporator 22 operate according to the opening of the cold air passage 10c, the cold air is discharged into the refrigerating chamber 10b to lower the internal temperature to a set value, and the thermostat 30 is operated as described above. It is operated to maintain the temperature in the refrigerator compartment 10b at a temperature suitable for the storage of the refrigerated food.

However, as the diaphragm contracts and / or expands in accordance with the change in the internal temperature as described above, the cold air flow path is opened and closed by the damper, so the elastic strength of the adjustment spring is changed by the pressure difference according to the temperature of the gas, thereby reliably opening and closing the cold air flow path. Not only this, of course, the temperature distribution in the refrigerator compartment becomes uneven, and in particular, the productivity and quality of the thermostat itself are lowered as well as the cost is increased.

The present invention is to solve the problems as described above, the object of the present invention is to improve the temperature control structure for controlling the temperature in the refrigerator refrigerator to maintain a uniform temperature distribution in the refrigerator as well as the temperature control device itself productivity and It is to provide a refrigerator compartment temperature control device of the refrigerator can improve the quality, especially the cost can be reduced.

1 is a longitudinal sectional view showing a refrigerator compartment temperature control device of a conventional refrigerator;

Figure 2 is an enlarged cross-sectional view of the refrigerator compartment temperature control device of Figure 1,

Figure 3 is a front view showing a refrigerator compartment temperature control apparatus of the refrigerator according to the present invention,

Figure 4 is an enlarged perspective view of the main portion of the refrigerator compartment temperature control apparatus according to the present invention,

Figure 5a is a state in which the opening is minimized by adjusting the temperature control device shown in Figure 4,

5B is a state in which the opening is opened to the maximum;

Figure 6 is a rear view showing another embodiment of a refrigerator compartment temperature control apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

60: guide rail 62,80: damper

62a, 80a: opening 64, 74: first and second racks

66: knob 66a: axis

68: gear 70,86: diaphragm

72,88: Filler 82: Operation lever

84: shaft

Features of the present invention for achieving the above object, the refrigerator main body is partitioned into a freezer and refrigerator compartment, the rear side of the refrigerator compartment is provided to control the temperature in the refrigerator compartment by controlling the amount of cold air discharged through the discharge hole A refrigerator compartment temperature control apparatus, comprising: cooling control means provided on a rear surface of the refrigerator compartment for controlling an amount of discharge of cold air by adjusting an opening area of the discharge hole; Setting means engaged with the cold air control means to set the internal temperature of the refrigerator compartment to an initially set value; It is achieved by being configured by the sensing means for engaging the setting means to sense the internal temperature and then move the cold air control means up and down in accordance with the sensed temperature.

The cold air control means according to the present invention is achieved by a damper having a sawtooth opening so as to communicate with the discharge hole and a first rack integrally injection-molded on one side of the damper.

The setting means according to the present invention is achieved by a portion protruding into the refrigerating compartment and a gear which is engaged with the first rack while being pressed into the knob of the refrigerating compartment and the shaft of the knob.

The sensing means according to the present invention is connected to one side of the diaphragm and the diaphragm that contracts and / or expands according to the temperature in the refrigerator compartment and is connected to the other side of the filler and the diaphragm that senses the inside temperature of the refrigerator compartment and meshes with the gear. Achieved by being equipped with a second rack.

Hereinafter, preferred embodiments of the refrigerator compartment temperature control apparatus of the refrigerator according to the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 are views showing the temperature control apparatus according to the present invention, the refrigerator body 10 is divided into a freezer and refrigerator compartments (10a) (10b), the refrigerator compartment (10b) is cooled from the evaporator 22 Discharge holes 10d for discharging the cold air into the refrigerating chamber 10b are formed, and guide rails 60 are integrally formed on both sides of the refrigerating chamber 10b on both sides of the discharge holes 10d. The rail 60 is provided with cold air control means for controlling the discharge amount of cold air by adjusting the open area of the discharge hole 10d.

The cold air control means is engaged with setting means for setting the cold air control means when initially setting the internal temperature of the refrigerator compartment 10b, and the setting means senses the high temperature and then cools the cold air control means according to the detected temperature. The sensing means for moving in the direction is engaged.

The cold air control means includes a damper 62 having a sawtooth opening 62a and a first rack 64 integrally injection molded on one side of the damper 62, and the setting means is inside the refrigerating chamber 10b. A portion protrudes into a gear 66 that is engaged with the first rack 64 while being pressed into the knob 66 and the shaft 66a of the knob 66 for artificially setting the internal temperature of the refrigerator.

In addition, the sensing means is connected to the diaphragm 70 that contracts and / or expands according to the temperature in the refrigerator and one side thereof, and is connected to the filler 72 and the other side to sense the temperature in the refrigerator compartment 10b. It is provided with the second rack 74 to be engaged.

Referring to Figures 5a and 5b the operation of the refrigerator compartment temperature control apparatus of the present invention configured as described above in detail as follows.

In order to store the refrigerated food stored in the refrigerator compartment 10b for a long time, the inside of the refrigerator compartment 10b is set to a set temperature. For example, the operation of the compressor 20 and the evaporator 22 is stopped when the internal temperature of the refrigerator compartment 10b is 10 ° C. or lower, and the filler 72 that senses the temperature is fixed to operate when the internal temperature of the refrigerator compartment 10b is 15 ° C. or higher. Let's do it.

At this time, while the internal temperature is maintained at 6 ° C. for the first time, the knob 66 is rotated and set as shown in FIG. 5A, and then the temperature of each part is set while gradually decreasing the area of the opening 62a formed in the damper 62. do. At this time, when the internal temperature is 10 ° C or less, the filler 72 detects this, and at the same time, the diaphragm 70 contracts as the internal temperature of the air is lower than the set temperature, and the damper 62 is lowered as shown in FIG. 5B. . That is, as the gear 68 engaged with the second rack 74 connected to the diaphragm 70 rotates, the damper 62 having the first rack 64 engaged with the gear 68 descends while the opening ( The amount of cold air discharged to the discharge hole 10d is controlled by reducing the area of 62a) to a minimum.

Thereafter, when the temperature inside the refrigerator rises above the set value (10 ° C.) when the refrigerator compartment door 14 is frequently opened and closed or when storing new refrigerated food on the shelf 16, the filler 72 detects the changed temperature. As the pressure of the gas increases, the diaphragm 70 expands and linearly moves the second rack 74 connected thereto.

Then, when the gear 68 engaged with the second rack 74 is rotated and the first rack 64 is moved downward, the opening area of the damper 62 is widened so that the compressor 20 and the evaporator 22 are rotated. A large amount of cold air cooled according to the operation is discharged to the discharge hole 10d to maintain the temperature in the refrigerator compartment 10b at a temperature suitable for preservation of the refrigerated food.

On the other hand, Figure 6 is a view showing another embodiment of the refrigerator compartment temperature control apparatus of the refrigerator according to the present invention, the inside of the refrigerator compartment 10b while linearly moving left and right in the rear of the discharge hole (10d) of the refrigerator compartment (10b) A damper 80 having a plurality of openings 80a having different sizes is mounted to control the amount of cold air discharged to the air, and the damper 80 is artificially adjusted at the lower part of the damper 80 at the initial setting of the internal temperature. The operation lever 82 is coupled.

One end of the shaft 84 is coupled to the actuating lever 82 and the other end is connected to a diaphragm 86 which contracts and / or expands according to the temperature in the air. The diaphragm 86 has a filler for sensing the temperature in the air. 88) is connected.

The temperature control device according to another embodiment of the present invention configured as described above sets the inside of the refrigerating chamber () to a set temperature. At this time, if the temperature in the refrigerator is lower than the operating temperature of the diaphragm 86, the operation of the compressor 20 and the evaporator 22 is stopped and the diaphragm 86 contracts. That is, as the pressure of the gas decreases, the diaphragm 86 contracts, and the shaft 84 coupled thereto retreats while the operating lever 82 and the damper 80 are retracted to reduce the opening area of the opening 80a. Control the amount of cold air.

When the inside of the refrigerating chamber 10b is higher than the set temperature, the diaphragm 86 operates in the reverse order to the above operation, thereby widening the area of the opening 80 formed in the damper 80 so that a large amount of cold air is discharged 10d. ) Is discharged into the refrigerating chamber 10b.

As described above, according to the refrigerator temperature control apparatus of the refrigerator according to the present invention, by improving the temperature control structure for controlling the temperature in the refrigerator, the temperature distribution in the refrigerator is kept uniform, as well as the productivity and quality of the temperature controller itself. It is possible to improve the performance and, in particular, to reduce costs.

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 (6)

In the refrigerator body is divided into a freezer and a refrigerator compartment, the refrigerator compartment temperature control device of the refrigerator is provided to control the amount of cold air discharged through the discharge hole in the rear of the refrigerator compartment to control the internal temperature of the refrigerator compartment, Cooling control means provided on the rear side of the refrigerating chamber to control the discharge area of the cold air by adjusting the opening area of the discharge hole; Setting means engaged with the cold air control means to set the internal temperature of the refrigerator compartment to an initially set value; And a sensing means engaged with the setting means and configured to move the cold air control means up and down according to the sensed temperature after sensing the internal temperature of the refrigerator. 2. The refrigerator compartment temperature control apparatus of claim 1, wherein the cold air control means comprises a damper having a sawtooth-shaped opening so as to communicate with the discharge hole, and a first rack integrally injection molded on one side of the damper. . The refrigerator according to claim 1, wherein the setting means comprises a knob protruding into a part of the refrigerating compartment and a gear which is pressed into the shaft of the knob to set the internal temperature of the refrigerating compartment and is engaged with the first rack. Refrigerator thermostat. 2. The diaphragm of claim 1, wherein the sensing means is connected to a diaphragm that contracts and / or expands according to a temperature of the refrigerator compartment and is connected to one side of the diaphragm and is connected to the other side of the diaphragm to sense a temperature of the refrigerator compartment. Refrigerator compartment temperature control apparatus of the refrigerator, characterized in that provided with a second rack engaged with the gear. According to claim 1, wherein the cold air control unit is coupled to the bottom of the damper and the damper having a plurality of openings of different sizes that are mounted so as to be linearly movable in the left and right direction on the rear of the discharge hole of the refrigerating chamber, the initial temperature of the internal temperature Refrigerator compartment temperature control device characterized in that the operating lever for artificially adjusting the damper at the time of setting. The refrigerator compartment temperature control apparatus of claim 1, wherein the sensing unit comprises a shaft coupled to the operation lever, a diaphragm connected to the other end of the shaft, and a filler connected to the other surface of the diaphragm.