KR100859460B1 - Side by side type refrigerator with cold air circulation - Google Patents

Abstract

The present invention relates to a side-by-side type refrigerator having a cold air circulation function, comprising: a side-by-side type refrigerator in which a freezer compartment and a refrigerating compartment are formed with a partition wall disposed along an up-down direction, wherein the cold air communicates with the freezer compartment An upper duct portion disposed in the rear upper region of the refrigerating compartment and having an upper discharge port formed to penetrate the inlet and the front portion to discharge cold air, and a flow path formed therein communicate with the upper duct portion and the vertical direction of the refrigerating compartment A duct member extending downward along the lower duct having at least one cold air outlet in the lower region; A circulation fan rotatably disposed in the lower duct portion; And a control unit controlling the circulation fan to suck cold air from the lower region of the refrigerating compartment and discharge the cold air to the upper region of the refrigerating compartment when the cold air inlet is blocked. As a result, a side-by-side type refrigerator having a cold air circulation function capable of diversifying the discharge of cold air and circulating the cold air in the refrigerating compartment to reduce the temperature variation therein is provided.

Description

Side by side type refrigerator with cold air circulation function {SIDE BY SIDE TYPE REFRIGERATOR WITH FUNCTION OF COOL AIR CIRCULATION}

1 is a perspective view of a conventional side by side type refrigerator,

2 is a plan sectional view of the main body of FIG. 1;

3 is a side cross-sectional view of the refrigerating compartment of FIG. 1,

4 is a perspective view of a side by side type refrigerator having a cold air circulation function according to an embodiment of the present invention;

5 is a plan sectional view of the main body of FIG. 4;

6 is a side cross-sectional view of the refrigerating compartment of FIG. 4;

7 is a view for explaining the operation of the circulation fan of FIG.

FIG. 8 is a control block diagram of the refrigerator of FIG. 4.

Explanation of symbols on the main parts of the drawings

11 body 12 bulkhead

15: cold air supply port 16: cold air intake port

21: freezing chamber 25: circulation passage

27: evaporator 31: refrigerator compartment

51: duct member 52a: upper duct portion                 

52b: lower duct 53: cold air inlet

54: upper discharge outlet 55: damper

56: cold air outlet 57: circulation fan

61 control unit 63 temperature detection unit

65: cooling fan

The present invention relates to a side-by-side type refrigerator having a cold air circulation function, and more particularly, to a cold air circulation function in which cold air discharge is varied and cold air in a refrigerating compartment is circulated to reduce internal temperature variation. It relates to a side by side type refrigerator having a.

1 is a perspective view of a conventional side by side type refrigerator, FIG. 2 is a plan sectional view of the main body of FIG. 1, and FIG. 3 is a side sectional view of the refrigerating compartment of FIG. 1. As shown in these figures, the side-by-side type refrigerator includes a main body 11 in which a freezing compartment 21 and a refrigerating compartment 31 are formed, respectively, with a partition 12 formed in an up and down direction, and a freezing compartment ( 21) and a freezer compartment door 22 and a refrigerator compartment door 32 which are hinged to the main body 11 so as to open and close the front openings of the refrigerating compartment 31.

The machine room 13 is formed in the rear lower area | region of the main body 11, The compressor 14 etc. are accommodated in the inside of the machine room 13, and the like.                         

A circulation passage 25 is formed in the rear region of the freezing chamber 21 so that the air can be cooled while circulating, and an evaporator 27 is installed inside the circulation passage 25 so that the air can be cooled while passing. . An upper side of the evaporator 27 is provided with a cooling fan (not shown) to allow air to flow from the lower side to the upper side of the evaporator 27.

In the freezer compartment 21 and the refrigerating compartment 31, a plurality of shelves 28 and 38 are disposed to be spaced apart from each other along the vertical direction to support food, and the freezer compartment 22 and the refrigerating compartment door 32 are provided. A plurality of baskets 23 and 33 are provided to accommodate food.

Meanwhile, a cold air supply port 15 is formed in the upper upper region of the partition 12 through the partition 12 so that the cold air of the freezer compartment 21 may be supplied to the refrigerating compartment 31. In the lower rear region along the vertical direction, the refrigerating air inlet 16 is formed to allow the air in the refrigerating chamber 31 to be sucked / returned into the circulation passage 25.

An upper rear duct 41 is provided in the rear upper region of the refrigerating chamber 31 to discharge the cold air provided through the cold air supply port 15 to the refrigerating chamber 31.

The upper rear duct 41 is formed to form a tubular shape formed with a cold air inlet 42 to be in communication with the cold air supply port 15 on one side, the cold air inlet 42 in the upper upper duct 41. Damper 45 is provided to open and close the. Cold air discharge ports 43a and 43b are formed through the front and bottom surfaces of the rear upper duct 41 so as to discharge cold air to the front region and the lower portion of the refrigerating chamber 31, respectively.

However, in the conventional side-by-side type refrigerator, the cold air supply port 15 is formed in the rear upper region of the partition 12 so as to supply the cold air of the freezer compartment 21 to the refrigerating compartment 31, and the front portion and The upper rear duct 41 having the cold air discharge ports 43a and 43b formed at the bottom thereof is disposed in communication with the cold air supply port 15 to discharge to the cold air discharge ports 43a and 43b at the front and the lower side of the refrigerating chamber 31. In addition, since the refrigerating chamber 31 is formed long along the up and down direction, there is a problem in that a temperature deviation between the upper region and the lower region of the refrigerating chamber 31 increases due to a so-called cold deflection phenomenon.

Accordingly, an object of the present invention is to provide a side-by-side type refrigerator having a cold air circulation function capable of varying the discharge of cold air and circulating the cold air in the refrigerating chamber to reduce temperature variation therein.

According to the present invention, in the side-by-side type refrigerator in which a freezer compartment and a refrigerating compartment are formed with partition walls arranged along the vertical direction, the cold air inlet and the front surface communicating with the freezer compartment are discharged. An upper duct portion disposed in the rear upper region of the refrigerating compartment and a flow path formed therein so as to communicate with the upper duct portion and extend downward along the up-down direction of the refrigerating compartment and have at least a lower region in the lower region. A duct member having a lower duct portion having one cold air outlet; A circulation fan rotatably disposed in the lower duct portion; And a control unit configured to control the circulation fan to suck the cold air from the lower region of the refrigerating compartment and discharge the cold air to the upper region of the refrigerating compartment when the cold air inlet is shut off. Is achieved by.

Here, the front surface of the lower duct portion is preferably formed with a plurality of front discharge ports spaced apart from each other in the vertical direction to discharge the cold air to the space between the shelves arranged to partition the refrigerating chamber in the vertical direction.

The circulation fan is capable of forward and reverse rotation, and when the temperature of the lower region of the refrigerating compartment is higher than that of the upper region of the refrigerating compartment, it is effective to control the rotation fan so that the amount of cold air discharged to the cold air discharge port is increased. to be.

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

4 is a perspective view of a side-by-side type refrigerator having a cold air circulation function according to an embodiment of the present invention, FIG. 5 is a plan sectional view of the main body of FIG. 4, FIG. 6 is a sectional side view of the refrigerating compartment of FIG. 4, 7 is a view for explaining the operation of the circulation fan of Figure 4, Figure 8 is a control block diagram of the refrigerator of FIG. The same reference numerals refer to the same and the same components as the above and illustrated configurations, and detailed description thereof will be omitted. As shown in these figures, the main body of the side-by-side type refrigerator having the cold air circulation function is provided with a freezer compartment 21 and a refrigerator compartment 31 having partitions 12 arranged along the up-down direction. (11), a freezer compartment 22 and a refrigerator compartment door 32 coupled to the main body 11 to open and close the freezing compartment 21 and the refrigerating compartment 31, and an upper duct disposed in the upper upper region of the refrigerating compartment 31. In the center of the bottom portion of the portion 52a and the upper duct portion 52a, the upper end of the duct member 51 having a lower duct portion 52b extending downward along the vertical direction of the refrigerating chamber 31, and the lower portion of the duct member 51; A control fan 61 for rotation control of the circulation fan 57 rotatably disposed in the duct part 52b and the circulation fan 57 so as to discharge air from the bottom region of the refrigerating chamber 31 to the upper region. It is configured to include.

Inside the refrigerating compartment 31, a plurality of shelves 38 are arranged to be spaced apart from each other along the up and down direction to partition the internal space and support food. The lower region of the refrigerating compartment 31 includes vegetables and fruits. Vegetable storage room 39 is provided to store the.

In the upper region of the partition wall 12, a portion of the cooled cool air may be supplied to the refrigerating chamber 31 while passing through the evaporator 27 by a cooling fan 65 disposed above the evaporator 27 to promote circulation of air. The cold air supply port 15 is formed so as to penetrate, and the cold air intake port 16 is formed in the lower region so that the air in the refrigerating chamber 31 can be returned to the circulation passage 25.

On the other hand, the duct member 51, the upper duct portion 52a disposed in communication with the cold air supply port 15 in the upper upper region of the refrigerating chamber 31, and the upper end in the center of the upper duct portion 52a mutually The lower end has a lower duct portion 52b communicating with and extending downward in the vertical direction.

On one side of the upper duct portion 52a is formed a cold air inlet 53 which is in communication with the cold air supply port 15, a pair of upper discharge port 54 is formed on the front portion to discharge the cold air to the front It is. A damper 55 is provided inside the upper duct portion 52a to open and close the cold air inlet 53.                     

In the front portion of the lower duct portion 52b, a plurality of cold air discharge ports 56 are formed to be spaced apart from each other along the vertical direction so as to supply cold air to each compartment partitioned by the shelf 38, and the lower duct portion 52b ), A circulation fan 57 is installed to suck cold air from the lower region of the refrigerating chamber 31 and discharge it to the upper region. Here, the circulation fan 57 is configured to enable forward and reverse rotation to promote the downward flow of cold air provided from the freezing chamber 21.

On the other hand, the control unit 61 implemented in the form of a microcomputer with a built-in control program is based on the detection result of the temperature detector 63 for detecting the temperature inside the refrigerating chamber 31, the cooling fan 65, the damper and the circulation The temperature detector 63, the cooling fan 65, the damper and the circulation fan 57 are electrically connected to each other so that the fan 57 can be controlled.

By such a configuration, when the temperature detection result of the temperature detection unit 63 indicates that the temperature condition of the refrigerating chamber 31 is unsatisfactory, the control unit 61 controls the damper 55 so that the cold air inlet 53 is opened, and the cooling is performed. Allow the fan 65 to rotate. Some of the cold air blown by the cooling fan 65 is introduced into the upper duct portion 52a through the cold air inlet 53 through the cold air supply port 15, as shown in FIG. Some of the air is discharged to the upper front region of the refrigerating chamber 31 through the upper discharge port 54. The rest of the air introduced into the upper duct portion 52a flows downward along the lower duct portion 52b and is discharged to the front region of the refrigerating chamber 31 through the respective cold air discharge ports 56 formed on the front surface thereof. After performing the cold air is sucked into the circulation passage 25 through the refrigeration cold air suction port 16 is cooled to cool the refrigerating compartment 31 while repeating the process provided to the refrigerating compartment (31). As a result of the temperature detection of the temperature detecting unit 63, when the temperature condition of the refrigerating chamber 31 is unsatisfactory and the temperature of the lower region is increased, the control unit 61 moves the circulation fan 57 to promote the downward flow of cold air. By rotating control, cold air is concentrated to the lower region than the upper region. When the temperature condition of the refrigerating chamber 31 is satisfied, the controller 61 controls the damper 55 to block the cold air inlet 53 so that the cold air supply is stopped.

On the other hand, when a predetermined time elapses after the cold air inlet 53 is blocked, the temperature of the upper region rises faster than the lower region due to a so-called cold deflection phenomenon. As a result of the detection of the temperature detector 63, when the temperature of the upper region rises by more than a certain level compared to the lower region of the refrigerating chamber 31, the controller 61 sucks air in the lower region and the upper portion as shown in FIG. The circulation fan 57 is controlled to be reversely rotated to be discharged to the area.

As described above, according to the present invention, there is provided a cold air inlet on one side which communicates with the freezer compartment, and is connected to the upper duct and the upper duct portion which are arranged to communicate with the freezer compartment in the rear upper region of the refrigerating compartment and on the rear wall of the refrigerating compartment. The duct member includes a duct member having a lower duct portion disposed along the up and down direction, a circulation fan disposed inside the lower duct portion, a temperature detector for detecting a temperature inside the refrigerating chamber, and a circulation fan based on the temperature detection result of the temperature detector. By providing a control unit to control the discharge of the cold air can be varied, the side-by-side type refrigerator with a cold air circulation function to reduce the temperature variation in the internal air can be circulated when the supply of cold air is interrupted provided do.

Claims (3)

A side-by-side type refrigerator having a freezer compartment and a refrigerating compartment formed between partition walls arranged in an up and down direction, the side by side type refrigerator having a cold air inlet communicating with the freezer compartment and an upper discharge port through which a cold air can be discharged to a front surface thereof; The upper duct portion disposed in the rear upper region of the refrigerating compartment and the flow path formed therein communicate with the upper duct portion and extend downward along the vertical direction of the refrigerating compartment, and the lower duct portion having at least one cold air outlet in the lower region. A duct member provided; A circulation fan rotatably disposed in the lower duct portion; And a control unit configured to control the circulation fan to suck cold air from the lower region of the refrigerating compartment and discharge the cold air to the upper region of the refrigerating compartment when the cold air inlet is shut off. The method of claim 1, The front surface of the lower duct has a plurality of front air outlets are formed to be spaced apart from each other along the vertical direction to discharge the cold air to the space between the shelves arranged to partition the refrigerating chamber in the vertical direction Side by side type refrigerator. The method according to claim 1 or 2, The circulation fan is capable of forward and reverse rotation, and the control unit rotates the circulation fan to increase the amount of cold air discharged to the cold air outlet when the temperature of the lower region of the refrigerator compartment is higher than that of the upper region of the refrigerator compartment. Side by side type refrigerator with cold air circulation function.

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