KR20000018885A - Device for circulating cold air of refrigerator and method thereof - Google Patents

Abstract

PURPOSE: A device for circulating cold air is provided to distribute uniform temperature in the refrigerating chamber and meet the work load effectively. CONSTITUTION: A device comprises: a first, a second, and a third horizontal ducts(21,22,23) to provide cold air to the upper, middle, and lower shelves of the refrigerating chamber(2) respectively; a first cold air passage(31) to supply the cold air produced in the evaporator(3) to the first and the second horizontal ducts; a second cold air passage(33) to supply the cold air produced in the evaporator to the third horizontal duct; a first fan(41) to blow the cold air produced in the evaporator to the 1st cold air passage; and a second fan(43) to blow the cold air produced in the evaporator to the second cold air passage. Herein, the second fan is installed in the upper part of the evaporator with a certain interval. Therefore, the device maintains the temperature distribution in the refrigerating chamber uniformly while preventing load to the refrigerating chamber.

Description

Cold air circulation apparatus and method of the refrigerator

The present invention relates to a cold air circulation device of the refrigerator, and in particular, by installing a plurality of horizontal ducts on the rear side of the refrigerating chamber connected to the plurality of cold air passages, while maintaining the temperature distribution of the refrigerating compartment uniformly, each of the shelves of the refrigerating compartment is concentrated. The present invention relates to a cold air circulation device and method for a refrigerator capable of effectively responding to a load of a refrigerator compartment.

As shown in FIGS. 1 to 3, the cold air circulation structure of the conventional refrigerator includes the cold air generated in the evaporator 3 being circulated through the freezer compartment 1 and the refrigerating compartment 2 by the blowing of the fan 4. To keep the temperature.

That is, when power is applied, the compressor 7 and the fan 4 are driven, and the cool air generated in the evaporator 3 is generated by the shroud 5 and the grill fan 6 by driving the fan 4. The freezing chamber 1 and the refrigerating chamber cold air passage 8 are supplied to the refrigerating chamber 2 according to the flow path. The cold air supplied to the refrigerating compartment 2 is supplied to each compartment of the refrigerating compartment through the vertical multi duct 9.

Meanwhile, the temperature of each compartment of the refrigerating compartment is sensed by the plurality of refrigerating compartment sensors 11 and 12 installed in the refrigerating compartment 2, and the twin damper 13 installed in the refrigerating compartment is operated to correspond to the detected temperature to the refrigerating compartment. The amount of cold air to send is controlled.

Meanwhile, the temperature of the freezer compartment is detected by the freezer compartment sensor 10 installed in the freezer compartment 1, and the compressor 7 and the fan 4 are driven and stopped in response to the sensed temperature to maintain the temperature of the freezer compartment.

However, in the conventional cold air circulation structure of the refrigerator, since vertical multi ducts are used, since the cold air gradually diffuses while going straight to the refrigerator compartment, a temperature difference occurs between the left and right side walls and the center of the refrigerator compartment, resulting in an uneven temperature distribution. In addition, the use of vertical multi-duct and two-win damper reduces the effective volume of the refrigerating compartment and causes interference of the storage container when storing food, and when the centralized cooling is put into the refrigerating compartment, Since the space is used, there is a problem that the efficiency of the evaporator is lowered.

The present invention is to solve the problems of the prior art, by installing a plurality of horizontal ducts on the rear of the refrigerating chamber to maintain the temperature distribution of the refrigerating chamber while intensive cooling is put on each shelf of the refrigerating compartment to effectively respond to the load of the refrigerating compartment. An object of the present invention is to provide a cold air circulation device and method for a refrigerator.

In order to achieve the above object, the cold air circulation device and method of the refrigerator of the present invention is installed horizontally on the back of the refrigerator compartment, a plurality of horizontal ducts for supplying cold air to each compartment of the refrigerator compartment, and the cold air generated in the evaporator, respectively And a cold air passage portion for supplying the plurality of horizontal ducts, and a blowing means for discharging the cold air generated in the evaporator to the cold air passage,

Supplying cold air to the compartments of the refrigerating compartment by supplying power to the refrigerator and by supplying the cold air generated by the evaporator into a plurality of refrigerating compartment cold air passages by driving the compressor and the plurality of fans;

Detecting a temperature of each compartment of the refrigerating compartment to which the cold air is supplied;

Comparing the detected temperature of each compartment of the refrigerator compartment with each set temperature;

As a result of the comparison, if the detected temperature is higher than the set temperature, continuing to drive the corresponding fan; if the detected temperature is lower than the set temperature, stopping the corresponding fan;

And stopping the compressor when all of the plurality of fans are stopped.

1 is a schematic front sectional view of a conventional refrigerator.

2 is a schematic side cross-sectional view of a conventional refrigerator.

3 is an explanatory diagram of a cold air oil of a conventional refrigerator

4 is a schematic front sectional view of the refrigerator of the present invention;

5 is a schematic side sectional view of the refrigerator of the present invention;

6 is an explanatory view of the cold air oil of the refrigerator of the present invention;

7 is a flow chart of the cold air circulation method of the refrigerator of the present invention.

** Description of symbols of the main parts of the drawings **

1: freezer 2: cold storage room

3: evaporator 7: compressor

21: first horizontal duct 22: second horizontal duct

23: third horizontal duct 31: the first cold air passage

33: second cold passage 41: first fan

43: second fan 51: the first sensor

53: second sensor

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The cold air circulation device of the refrigerator of the present invention, as shown in Figures 4 to 6, is installed horizontally on the back of the refrigerating chamber (2) for supplying cold air to the upper compartment, the middle compartment, the lower compartment of the refrigerating compartment (2), respectively First, second and third horizontal ducts 21, 22 and 23, and the first to supply the cold air generated in the evaporator 3 to the first, second horizontal ducts 21, 22 The cold air passage 31 of 1, the 2nd cold air passage 33 for supplying the cool air which generate | occur | produced in the evaporator 3 to the 3rd horizontal duct 23, and the cold air produced by the evaporator 3 are said said A first fan 41 for blowing air into the first cold air passage 31 and a second fan 43 for blowing cold air generated in the evaporator 3 into the second cold air passage 33 are provided.

The said 1st, 2nd fan 41 and 43 are provided in the upper part of the said evaporator 3 at intervals.

The first cold air passage 31 is connected to the first and second horizontal ducts 21 and 22 provided on the upper compartment and the rear side of the middle compartment of the refrigerating chamber 2, and the second cold air passage 33 is It is connected to the 3rd horizontal duct 23 provided in the back of the lower part of the refrigerating compartment 2.

The first, second, and third horizontal ducts 21, 22, 23 are installed in the foaming foam on the rear side of the refrigerating chamber, and for discharging cold air into the refrigerating chamber formed over the entire horizontal direction of the refrigerating chamber. A plurality of cold air discharge ports 21 ', 22', 23 'are provided.

The refrigerating compartment 2 is provided with a first refrigerating compartment sensor 51 for sensing the temperature of the upper compartment and the middle compartment of the refrigerating compartment, and a second refrigerating compartment sensor 53 for sensing the temperature of the lower compartment of the refrigerating compartment, respectively.

On the other hand, the shroud 5 and the grill pan 6 divide the cold air flow path so that the cool air generated in the evaporator is supplied to the respective cold air passages by the fans 41 and 43.

Hereinafter, the operation of the cold air circulation device of the refrigerator of the present invention will be described.

When power is applied, the compressor 7 and the first and second fans 41 and 43 are driven so that the cool air generated in the evaporator 3 is blown by the first and second fans 41 and 43. Thereby, nutrients are supplied to the first cold air passage 31 and the second cold air passage 33 according to the divided cold air passages generated by the shroud 5 and the grill pan 6. The cold air supplied to the first cold air passage 31 is supplied to the upper and middle compartments of the refrigerating chamber through the cold air discharge ports 21 'and 22' of the first and second horizontal ducts 21 and 22, and the second cold air. The cold air supplied to the passage 33 is supplied to the lower bay of the refrigerating chamber through the cold air discharge port 23 'of the third horizontal duct 23.

On the other hand, if the temperature sensed by the first sensor 51 of the refrigerating compartment is higher than the set temperature during the cold air supply in this way, the compressor 7 and the first fan 41 continue to operate, and the first sensor 51 of the refrigerating compartment. If the temperature detected by the temperature is lower than the set temperature, the first fan 41 is stopped to stop the supply of cold air to the first cold air passage 31, so that the temperature of the upper compartment and the middle compartment of the refrigerating compartment is kept constant. .

In addition, if the temperature detected by the second sensor 53 of the refrigerating compartment is higher than the set temperature, the compressor 7 and the fan 43 continue to operate, and the temperature detected by the second sensor 53 of the refrigerating compartment is the set temperature. If it is lower, the 2nd fan 43 is stopped, and supply of cold air to the 2nd cold air path 33 is interrupted | released, and the temperature of the lower bay of a refrigerator compartment is kept constant. In this way, when both the first and second fans 41 and 43 are stopped, the compressor 7 is stopped.

As described above, according to the present invention, since a plurality of horizontal ducts are installed on the rear surface of the refrigerating compartment, the concentrated cooling is applied to each shelf of the refrigerating compartment while maintaining the temperature distribution of the refrigerating compartment uniformly, so that it can effectively cope with the load of the refrigerating compartment, Can increase the effective contents of the refrigerating chamber.

In addition, by connecting a plurality of cold air passages to each horizontal duct to supply only the cold air into which the intensive cooling of the refrigerating chamber is put, the efficiency of the evaporator can be improved.

Claims (5)

A plurality of horizontal ducts installed horizontally on the rear surface of the refrigerating compartment for supplying cold air to each compartment of the refrigerating compartment, a plurality of cold air passages for supplying cold air generated in the evaporator to the plurality of horizontal ducts, respectively, A cold air circulation system of a refrigerator, comprising a plurality of air blowing means for blowing cold air into the cold air passages, respectively. The method of claim 1, The plurality of horizontal ducts are composed of first, second and third horizontal ducts for supplying cold air to the upper compartment, the middle compartment and the lower compartment of the refrigerating compartment, respectively. The cold air passage, the cold air circulation apparatus of the refrigerator comprising a first cold passage connected to the first and second horizontal duct, and a second cold passage connected to the third horizontal duct. The method of claim 2, The blowing means is installed in the upper portion of the evaporator with a space between the cold air circulation of the refrigerator comprising a first fan and a second fan for blowing cold air to the first cold passage and the second cold passage respectively. Device. The method of claim 3, wherein And a plurality of temperature sensing means for sensing the temperature of each compartment of the refrigerating compartment to control the driving of each fan according to the sensing temperature. Supplying cold air to the compartments of the refrigerating compartment by supplying power to the refrigerator and by supplying the cold air generated by the evaporator into a plurality of refrigerating compartment cold air passages by driving the compressor and the plurality of fans; Detecting a temperature of each compartment of the refrigerating compartment to which the cold air is supplied; Comparing the detected temperature of each compartment of the refrigerator compartment with each set temperature; As a result of the comparison, if the detected temperature is higher than the set temperature, continuing to drive the corresponding fan; if the detected temperature is lower than the set temperature, stopping the corresponding fan; Cooling air circulation method of the refrigerator, characterized in that the step of stopping the compressor when all of the plurality of fans is stopped.