KR100451350B1 - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator, comprising: a main body in which a freezing compartment and a refrigerating compartment are respectively formed along the vertical direction; An evaporator disposed at a rear region of the freezer compartment to cool air; A cooling fan disposed at one side of the evaporator to allow air in the freezing compartment and the refrigerating compartment to be cooled in contact with the evaporator; A cold air supply path formed along an up and down direction to supply cold air provided from the freezing compartment to the refrigerating compartment, and an up and down direction to suck air from the lower region of the refrigerating compartment to one side of the cold air supply passage A cold air duct member having a cold air circulation path formed along the rear surface of the refrigerating compartment; A suction fan disposed in the cold air circulation path and configured to flow lower air upward; And a control unit for controlling the suction fan to rotate. As a result, a refrigerator is provided which can circulate air in the lower region of the refrigerating compartment to the upper region to suppress the occurrence of temperature deviations between the upper and lower sides.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator, and more particularly, to a refrigerator in which air in the lower region of the refrigerating chamber is circulated to the upper region so that temperature deviation between the upper and lower sides can be suppressed.

1 is a longitudinal sectional view of a conventional refrigerator. As shown in the drawing, the refrigerator includes a main body 101 having a freezer compartment 111 and a refrigerating compartment 121 formed therebetween with partitions 102 interposed therebetween, and a front surface of the freezer compartment 111 and the refrigerating compartment 121. A freezing chamber door 112 and a refrigerating chamber door 122 hinged to the main body 101 to open and close the opening.

A compressor 107 is provided in the lower rear region of the main body 101 to compress the refrigerant, and the rear region of the freezer compartment 111 is disposed parallel to the rear wall of the main body 101 so that air can be circulated. The shroud 115 is formed so as to form a circulation flow path. An evaporator 113 is installed inside the circulation passage to perform a cooling action as the refrigerant evaporates, and an upper side of the evaporator 113 is cooled to promote the flow of air so that air can be exchanged while passing through the evaporator 113. The fan 119 is provided.

In the front region of the shroud 115 along the front and rear directions of the freezing chamber 111, grill members 117 having a plurality of discharge ports 118 are provided to be spaced apart from each other by a predetermined distance. In the freezing chamber 111 and the refrigerating chamber 121, the freezer compartment return passage 103 and the refrigerating chamber return passage 105 are formed so that the air is returned to the circulation passage and cooled.

Meanwhile, a plurality of shelves 123 spaced apart from each other in the up and down direction and supporting foods are installed in the refrigerating chamber 121, and a lower portion of the vegetable compartment tray forming a vegetable compartment for storing vegetables and fruits ( 129 is provided.

A refrigeration cold air duct having a plurality of cold air discharge ports 127 communicating with the freezing compartment 111 and spaced apart from each other along the vertical direction in the rear region of the refrigerating compartment 121 to discharge the cold air provided from the freezing compartment 111 to the refrigerating compartment 121. 125 is provided, and a plurality of door baskets 124 are coupled to the inner plate surface of the refrigerating chamber door 122 to be spaced apart from each other in the vertical direction.

By such a configuration, the refrigerant compressed by the compressor 107 is introduced into the evaporator 113 through a condenser and a capillary tube (not shown), and the refrigerant introduced into the evaporator 113 has a cooling action of evaporating while absorbing the latent heat of the surroundings. Will be performed.

When the cooling fan 119 is driven, air in the freezer compartment 111 and the refrigerating compartment 121 is circulated through the freezer compartment return passage 103 and the refrigerator compartment return passage 105 formed in communication with the circulation passage in the partition 102. It flows into the flow path and is cooled while passing through the evaporator 113. Some of the cooled air is discharged to the freezing chamber 111 through a discharge port formed in the grill member 117, a part flows into the refrigerating chamber 121, and the refrigerating chamber 121 through the cold air discharge port 127 of the refrigeration cold air duct 125. To be discharged.

However, in the conventional refrigerator, the refrigerating chamber 121 is formed to have a long length along the vertical direction, so that the air having a relatively high temperature rises due to convection and the air having a relatively low temperature is There is a problem that a temperature deviation between the top and bottom occurs by falling. In particular, as time passes while the cooling fan 119 is turned off, there is a problem in that the temperature deviation between the upper and lower sides is further increased.

Accordingly, an object of the present invention is to provide a refrigerator capable of circulating air in the lower region of the refrigerating chamber to the upper region to suppress the occurrence of temperature deviation between the upper and lower sides.

1 is a longitudinal sectional view of a conventional refrigerator,

2 is a longitudinal sectional view of a refrigerator according to one embodiment of the present invention;

3 is a front view of the refrigerator of FIG. 2, FIG.

4 is a plan view of the cold air duct member of FIG. 2, and FIG. 5 is a control block diagram of the refrigerator of FIG.

Explanation of symbols on the main parts of the drawings

11: body 21: freezer

23: evaporator 29: cooling fan

31: refrigerator 33: shelf

37a: upper temperature detection sensor 37b: lower temperature detection sensor

41: cold air duct member 42: inlet

43a: first cold air supply passage 43b: second cold air supply passage

44a, 44b: cold air outlet 48a: suction port

48b: discharge port 49: suction fan

51: control unit

According to the present invention, the object and the freezing chamber and the refrigerating chamber are formed in the vertical direction; An evaporator disposed at a rear region of the freezer compartment to cool air; A cooling fan disposed at one side of the evaporator to allow air in the freezing compartment and the refrigerating compartment to be cooled in contact with the evaporator; A cold air supply path formed along an up and down direction to supply cold air provided from the freezing compartment to the refrigerating compartment, and an up and down direction to suck air from the lower region of the refrigerating compartment to one side of the cold air supply passage A cold air duct member having a cold air circulation path formed along the rear surface of the refrigerating compartment; A suction fan disposed in the cold air circulation path and configured to flow lower air upward; It is achieved by a refrigerator characterized in that it comprises a control unit for controlling the suction fan to rotate.

The apparatus may further include an upper temperature detection sensor detecting a temperature of an upper region of the refrigerating compartment, and a lower temperature detection sensor detecting a temperature of a lower region of the refrigerating compartment, wherein the controller detects the upper temperature when the cooling fan is turned off. On the basis of the detection result of the sensor and the lower temperature detection sensor, it is preferable to control the suction fan to rotate when the temperature deviation is more than a predetermined value.

An inlet is formed at an upper end of the cold air duct member so that cold air from the freezing compartment can be introduced therein, and the cold air supply passage is spaced apart from each other at a predetermined distance along a horizontal direction, and the cold air circulation passage is supplied with the branched cold air. It is effective to be formed between furnaces.

A plurality of shelves are disposed in the refrigerating chamber to be spaced apart from each other by a predetermined distance along the up and down direction, and the cold air duct member communicates with the cold air supply path and the cold air circulation path, respectively, and a cold air discharge port is formed to correspond to the shelves. It is desirable to have.

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

2 is a longitudinal sectional view of the refrigerator according to an embodiment of the present invention, FIG. 3 is a front view of the refrigerator of FIG. 2, FIG. 4 is a plan view of the cold air duct member of FIG. 2, and FIG. 5 is a control of the refrigerator of FIG. 2. It is a block diagram. As shown in these figures, the refrigerator includes a main body 11 in which a freezing compartment 21 and a refrigerating compartment 31 are formed, respectively, with the partition 12 therebetween in the up and down direction, and the rear of the freezing compartment 21. An evaporator 23 disposed in the region to cool the air, and a cooling fan 29 disposed above the evaporator 23 to cool the air in the freezer compartment 21 and the refrigerating compartment 31 while being in contact with the evaporator 23. The first cold air supply passage 43a and the second cold air supply passage 43b and the first cold air supply passage 43a along the up and down directions to supply the cold air of the freezer compartment 21 to the refrigerating chamber 31. And a cold air circulation path 47 formed to circulate air in the refrigerating compartment 31 between the second cold air supply passage 43b, and disposed in the rear region of the refrigerating compartment 31 along the vertical direction. ), The suction fan 49 which is disposed in the cold air circulation passage 47 to promote the flow of air, and the suction fan 49 is controlled to rotate. It is constituted by a control unit (51).

A compressor 17 is provided in the lower rear region of the main body 11 to compress the refrigerant, and a control unit for controlling each driving component including a suction fan 49 and the like on the upper surface of the main body 11. 51 is provided. The control unit 51 is usually implemented in the form of a microcomputer with a built-in control program so as to perform various functions. The control unit 51 has a temperature difference between internal upper and lower regions of the refrigerating chamber 31 as shown in FIG. 5. The upper temperature detection sensor 37a, the lower temperature detection sensor 37b and the suction fan 49 are electrically connected to each other so that the temperature difference between the upper and lower sides can be eliminated by detecting and controlling the driving of the suction fan 49 based on the result. It is connected. The freezing chamber door 22 and the refrigerating chamber door 32 are hinged to the front surface of the main body 11 so that the freezing chamber 21 and the refrigerating chamber 31 can be rotated.

A circulation passage is formed in the rear region of the freezing chamber 21 by the shroud 25 so that air can be circulated, and an evaporator 23 is disposed in the circulation passage to cool the air. The upper side of the evaporator 23 is provided with a cooling fan 29 to allow air to cool while passing through the evaporator 23, the grill member parallel to the shroud 25 in the front region of the shroud (25). 27 is arrange | positioned. The grill member 27 is provided with a plurality of discharge ports for discharging the cooled air through the evaporator 23 to the freezing chamber 21, and the partition 12 has air in the freezing chamber 21 and the refrigerating chamber 31. The freezer compartment return passage 13a and the refrigerating compartment return passage 13b are respectively formed so as to return to the circulation passage.

On the other hand, the inside of the refrigerating chamber 31 is provided with a plurality of shelves 33 in the vertical direction to support the food, the lower region is provided with a vegetable chamber tray 35 to accommodate vegetables and fruits, etc. have.

Cold air supply paths 43a and 43b and cold air are provided in the rear region of the refrigerating compartment 31 so as to receive cold air from the freezing compartment 21 and discharge it to the refrigerating compartment 31 and to circulate air in the refrigerating compartment 31. The cold air duct member 41 in which the circulation path 47 was formed is provided.

An inlet 42 is formed at an upper end of the cold air duct member 41 so as to communicate with the freezing compartment 21 so that cold air from the freezing compartment 21 can be introduced therein, and an inlet 42 is formed inside the cold air duct member 41. The first cold air supply passage 43a and the second cold air supply passage 43b branched from the lower side of the inlet port 42 are formed so that the cold air introduced through the branch can be discharged to the refrigerating chamber 31. A cold air circulation path 47 is formed between the first cold air supply passage 43a and the second cold air supply passage 43b to suck air from the lower region of the refrigerating chamber 31 and discharge the air to the upper region.

Both edges of the front surface of the cold air duct member 41 communicate with the first cold air supply passage 43a and the second cold air supply passage 43b along the vertical direction, respectively, and correspond to the area between the shelf 33 and the shelf 33. A plurality of cold air discharge ports 44a and 44b are formed, and a suction port 48a is formed in the central lower region to suck air from the lower region of the refrigerating chamber 31 into the cold air circulation passage 47. Discharge ports 48b are formed on the upper side of the suction port 48a to discharge cold air sucked through the suction port 48a between the shelves 33, and the cold air circulation path is formed at the suction port 48a of the cold air circulation path 47. A suction fan 49 is provided to allow the air in the lower region of the refrigerating chamber 31 to be sucked into the interior of the 47 and discharged to the upper region.

On the inner wall of the refrigerating chamber 31, an upper temperature detection sensor 37a is provided to detect the temperature of the upper region of the refrigerating chamber 31, and a lower side of the upper temperature detection sensor 37a can detect the temperature of the lower region. The lower temperature detection sensor 37b is provided.

By this configuration, the refrigerant compressed by the compressor 17 performs a cooling action to be evaporated while absorbing the latent heat of the surroundings in the evaporator 23 via a condenser, a capillary tube, and the like, and the refrigerant having performed the cooling action is It is sucked into the compressor 17 again, compressed / discharged, and circulated to perform a cooling operation.

When the cooling fan 29 starts to rotate, the air in the freezing chamber 21 and the refrigerating chamber 31 is sucked into the circulation passage through each of the return passages 13a and 13b to be brought into contact with the evaporator 23 and cooled. Some of the cooled air is discharged to the freezing chamber 21 through the discharge port 28 formed in the grill member 27, and a part of the cooled air flows downward to allow the first and second cold air supply paths 43a of the cold air duct member 41 to flow. It flows along 43b) and is discharged to the refrigerating chamber 31 through the cold air discharge ports 44a and 44b formed in the front surface.

On the other hand, when the cooling temperature condition of the freezing chamber 21 and the refrigerating chamber 31 is satisfied and the cooling fan 29 stops driving, the controller 51 controls the upper temperature detecting sensor 37a and the lower temperature detecting sensor 37b. On the basis of the detection result, if the temperature deviation between the upper and lower sides is more than the predetermined value, the suction fan 49 is controlled to rotate. When the suction fan 49 starts to rotate, the air in the lower region of the refrigerating chamber 31 is sucked into the cold air circulation passage 47 through the suction port 48a, and the sucked air flows upward to each discharge port 48b formed on the front surface. By discharging toward the front between the shelves 33 to the front to quickly mix with the cold of the upper region to eliminate the temperature deviation between the top and bottom.

As described above, according to the present invention, the cold air supply path and the air sucked from the lower region of the refrigerating chamber flow upward so that the air provided from the freezer compartment flows downward in the rear region of the refrigerating chamber along the vertical direction. A cold air duct member having a cold air circulation path for discharging is provided, and a suction fan installed to suck air in the lower region of the refrigerating compartment into the cold air circulation path, and a control unit for controlling the suction fan are provided in the lower part of the refrigerating compartment. By allowing the air in the region to be discharged to the upper region, a refrigerator capable of reducing the temperature deviation between the upper and lower sides of the inside of the refrigerating chamber is provided.

Claims (4)

A main body in which a freezing compartment and a refrigerating compartment are formed along the vertical direction; An evaporator disposed at a rear region of the freezer compartment to cool air; A cooling fan disposed at one side of the evaporator to allow air in the freezing compartment and the refrigerating compartment to be cooled in contact with the evaporator; A cold air supply path formed along an up and down direction to supply cold air provided from the freezing compartment to the refrigerating compartment, and an up and down direction to suck air from the lower region of the refrigerating compartment to one side of the cold air supply passage A cold air duct member having a cold air circulation path formed along the rear surface of the refrigerating compartment; A suction fan disposed in the cold air circulation path and configured to flow lower air upward; And a control unit for controlling the suction fan to rotate. The method of claim 1, And an upper temperature detection sensor for detecting a temperature of an upper region of the refrigerating compartment, and a lower temperature detection sensor for detecting a temperature of a lower region of the refrigerating compartment, wherein the control unit includes the upper temperature detection sensor when the cooling fan is turned off; And a suction fan is driven to rotate when the temperature deviation is more than a predetermined value based on a detection result of the lower temperature detection sensor. The method according to claim 1 or 2, An inlet is formed at an upper end of the cold air duct member so that cold air from the freezing compartment can be introduced therein, and the cold air supply passage is spaced apart from each other at a predetermined distance along a horizontal direction, and the cold air circulation passage is supplied with the branched cold air. Refrigerator, characterized in that formed between the furnace. The method of claim 3, A plurality of shelves are disposed in the refrigerating chamber to be spaced apart from each other by a predetermined distance along the up and down direction, and the cold air duct member communicates with the cold air supply path and the cold air circulation path, respectively, and a cold air discharge port is formed to correspond to the shelves. There is a refrigerator characterized by.