KR200207424Y1 - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator having a main body cabinet having mutually divided freezer compartments and a refrigerating compartment, and a cold air duct for guiding cold air from an evaporator provided in a rear region of the freezer compartment to the refrigerating compartment. A damper plate rotatably installed in the cold air duct to open and close the cold air guide passage; A damper driver for rotating the damper plate; A hook receiving portion formed on an inner wall surface of the cold air duct corresponding to upper and lower ends of the damper plate and having an elastic member accommodated therein; It is characterized in that it comprises a gap blocking member that is elastically slidably accommodated in the engaging portion to contact the upper and lower ends of the damper plate when the guide flow path is blocked. As a result, a gap formed between the damper plate and the cold air duct inner wall surface is blocked to provide a refrigerator capable of preventing overcooling of the refrigerating compartment.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator, and more particularly, to a refrigerator capable of preventing an overcooling phenomenon of a refrigerating compartment by improving an installation structure of a damper plate.

In general, a refrigerator has a relatively low temperature freezer compartment and a relatively high temperature refrigerating compartment, and includes a refrigerating system for cooling these freezer compartments and storage stored in the refrigerating compartment. The refrigeration system of the refrigerator comprises a compressor for compressing the refrigerant, a condenser for condensing the refrigerant from the compressor, and an evaporator for evaporating the refrigerant from the condenser to generate cold air supplied to the freezing compartment and the refrigerating compartment, respectively.

4 is a side cross-sectional view of a conventional refrigerator, FIG. 5 is an enlarged cross-sectional view of the damper installation region of FIG. 4, and FIG. 6 is a front cross-sectional view of the damper installation region of FIG. 5. As shown in these figures, the refrigerator includes a main body cabinet 101 in which the refrigerating compartment 108 and the freezing compartment 109, which are mutually divided, are formed in the upper and lower parts, and installed in front of the main body cabinet 101, 108 and a freezer compartment door 102 and a freezer compartment door 104 which rotate and open the front openings of the freezer compartment 109, respectively.

The main cabinet 101 has an outer casing 103 that forms the exterior of the refrigerator, and a refrigerating chamber that is spaced apart from the outer casing 103 and the foam material filling intervals in the upper and lower regions of the outer casing 103. 108 and an inner casing 105 forming the freezer compartment 109.

In the refrigerating compartment 108 and the freezing compartment 109, a plurality of article storage spaces are formed by a plurality of shelves 107 arranged to have a predetermined distance from each other in the vertical direction, the evaporator in the rear region of the refrigerating compartment 108 A cold air distribution member 116 is provided to receive the cool air from the 117 and to evenly supply each of the storage spaces inside the refrigerating chamber 108, and an installation space and an evaporator (evaporator) of the evaporator 117 are provided in the rear region of the freezing chamber 109. An evaporator cover 110 is provided to form a cold air distribution passage 115 so that the cold air from the 117 can be evenly supplied to the respective storage spaces in the freezer compartment 109.

The evaporator cover 110 includes a cover rear plate 111 disposed at a predetermined distance from the rear wall of the freezing chamber 109 to a front side and a cover front plate 113 disposed in front of the cover rear plate 111. Have An evaporator 117 is provided in the bottom lower region of the cover rear plate 111 to evaporate the refrigerant supplied from the condenser (not shown), and to generate cold air. The cold air from the evaporator 117 is provided on the upper part of the evaporator 117. Blowing fan 119 for blowing air is installed, the cold air blown by the blowing fan 119 in the area between the cover back plate 111 and the cover front plate 113 to the freezer compartment 109 and the refrigerating compartment 108. The cold air distribution passage 115 is formed to face.

In the foam filling space in the rear region of the inner casing 105 forming the freezing compartment 109 and the refrigerating compartment 108, the cold air flow guide 123 may be used to guide cool air from the evaporator 117 into the refrigerating compartment 108. ) And a cold air circulation duct 121 for guiding the air cooled inside the refrigerating chamber 108 to the evaporator 117. The cold air duct 120 has a substantially rectangular cross section, and the cold air distribution member 116 disposed behind the refrigerating chamber 108 from the cold air distribution passage 115 of the evaporator cover 110 disposed in the rear region of the freezing chamber 109. ), And the cold air circulation duct 121 is disposed to face the evaporator 117 from the rear wall lower region of the refrigerating chamber 108.

Meanwhile, the cold air duct 120 is blocked and opened to control the temperature of the cold air supplied from the evaporator 117 to the refrigerating chamber 108 by blocking and opening the cold air guiding passage 123 to control the temperature inside the refrigerating chamber 108 to an appropriate temperature. Damping device 150 is installed. The damping device 150 has a damper plate 151 rotatably installed in the cold air duct 120, and a damper driver 155 for rotating the damper plate 151.

The damper plate 151 is formed of a substantially rectangular plate-like member corresponding to the cross-sectional shape of the cold air duct 120, and both sides of the damper plate 151 are rotating pin holes formed on both inner wall surfaces of the cold air duct 120. The rotary pin 153 which is rotated and supported by 124 protrudes.

The damper driver 155 has a drive motor 157 installed outside the cold air duct 120, and a rotation shaft 159 for transmitting the rotational force of the drive motor 157 to the damper plate 151, and the rotation shaft 159. Is connected to one side rotation pin 153 of the damper plate 151.

By such a configuration, the cold air generated by the evaporator 117 is blown into the cold air distribution passage 115 by the blowing force of the blower fan 119, and then some of the cold air is covered by the cover front plate 113 of the evaporator cover 110. After being supplied into the freezer compartment 109 through the cold air discharge hole (161a) formed in the), and another part of the cold air is supplied to the cold air distribution member 116 of the refrigerating compartment 108 through the cold air duct 120 The cold air is supplied to the refrigerating chamber 108 through the cold air discharge hole 161b formed in the cold air distribution member 116, and the cold air supplied to the freezing chamber 109 and the refrigerating chamber 108 cools the inside of the refrigerator, and then the cold air circulation duct. Returning to the evaporator 117 through 121, heat exchange in the evaporator 117 is made again, and then the circulation process supplied to the freezer compartment 109 and the refrigerating compartment 108 is repeated.

At this time, the damper plate 151 of the damping device 150 blocks and opens the cold air guide passage 123 of the cold air duct 120 according to the temperature of the cold room 108 to maintain the temperature of the cold room 108 at an appropriate temperature. Let's go.

However, in such a conventional refrigerator, the damper plate is formed smaller than the inner diameter of the cold air duct in consideration of the smooth rotation of the damper plate and the contraction of the cold air duct, which open and block the cold air duct of the cold air duct by rotation. A gap is generated between the outer periphery of the damper plate and the inner wall of the cold air duct. This gap is formed relatively large between the upper and lower ends of the damper plate and the upper and lower inner wall surfaces of the corresponding cold air duct, as shown in the display portion 'C' of FIG. 5.

As a result, even when the damper plate blocks the cold air guide flow path, the cold air continues to be supplied to the refrigerating compartment through the gap, thereby causing a refrigerating compartment subcooling phenomenon in which the temperature in the refrigerating compartment is excessively lowered.

Accordingly, an object of the present invention is to provide a refrigerator capable of preventing overcooling of the refrigerating compartment by blocking a gap formed between the damper plate and the cold air duct inner wall surface.

1 is a side cross-sectional view of a refrigerator according to the present invention,

2 is an enlarged cross-sectional view of the damper installation region of FIG.

3 is a perspective view of the damper installation region of FIG.

4 is a side sectional view of a conventional refrigerator,

5 is an enlarged cross-sectional view of the damper installation region of FIG.

6 is a sectional front view of the damper installation region of FIG.

* Explanation of symbols for the main parts of the drawings

1: main cabinet 5: inner casing

8: refrigerating chamber 9: freezing chamber

15: cold air distribution channel 16: cold air distribution member

17: evaporator 19: blower fan

20: cold air duct 23: cold air guide euro

30: hook portion 37: spring

40: gap blocking member 45: inward inclined surface

50: damping device 51: damper plate

55 damper drive unit

The object is, according to the present invention, having a main body cabinet in which the freezing compartment and the refrigerating compartment, which are mutually divided, and a cold air duct forming a cold air guiding passage for guiding the cold air from the evaporator provided in the rear region of the freezing compartment to the refrigerating compartment. A refrigerator, comprising: a damper plate rotatably installed in the cold air duct to open and close the cold air guide passage; A damper driver for rotating the damper plate; A hook receiving portion formed on an inner wall surface of the cold air duct corresponding to upper and lower ends of the damper plate and having an elastic member accommodated therein; It is achieved by the refrigerator characterized in that it comprises a clearance blocking member that is elastically slidably retractable in the hook receiving portion to contact the upper and lower ends of the damper plate when the guide flow path is blocked. It is preferable that the member has an accommodating coupling portion accommodated in the hook receiving portion, and a contact portion integrally formed with the accommodating coupling portion to contact the damper plate. The contact portion corresponds to a rotational direction of the damper plate. It is effective that an inwardly inclined surface is formed. Further, the elastic member is more preferably a spring.

Hereinafter, with reference to the accompanying drawings will be described in detail for the subject innovation.

1 is a side cross-sectional view of the refrigerator according to the present invention, FIG. 2 is an enlarged cross-sectional view of the damper installation region of FIG. 1, and FIG. 3 is a perspective view of the damper installation region of FIG. 2. As shown in these drawings, the refrigerator according to the present invention includes a main cabinet 1 in which the refrigerating chamber 8 and the freezing chamber 9 which are mutually divided are formed in the upper and lower parts, and in front of the main cabinet 1. It is provided with the refrigerator compartment door 2 and the freezer compartment door 4 which rotate and open the front opening of the refrigerating compartment 8 and the freezing compartment 9, respectively.

The main cabinet 1 has an outer casing 3 which forms the exterior of the refrigerator, and a refrigerating chamber which is arranged at an inner upper and lower portions of the outer casing 3 with an outer casing 3 and a foam material filling interval therebetween. 8) and an inner casing 5 forming a freezer compartment 9.

In the refrigerating chamber 8 and the freezing chamber 9, a plurality of article storage spaces are formed by a plurality of shelves 7 arranged to have a predetermined distance from each other along the vertical direction, and an evaporator in the rear region of the refrigerating chamber 8 is provided. A cold air distribution member 16 is provided to receive the cool air from the 17 and evenly supply it to each of the storage spaces inside the refrigerating chamber 8, and an installation space of the evaporator 17 and an evaporator (in the rear region of the freezing chamber 9). An evaporator cover 10 is provided which forms a cold air distribution passage 15 so that the cold air from 17 can be evenly supplied to the respective storage spaces in the freezer compartment 9.

The evaporator cover 10 includes a cover rear plate 11 disposed at a predetermined distance from the rear wall of the freezing chamber 9 to the front side and a cover front plate 13 disposed in front of the cover rear plate 11. Have An evaporator 17 is installed in the lower lower region of the cover rear plate 11 to evaporate the refrigerant supplied from the condenser (not shown) and to generate cold air, and the cold air from the evaporator 17 is provided on the upper part of the evaporator 17. A blowing fan 19 for blowing air is provided, and cold air blown by the blowing fan 19 is provided between the cover rear plate 11 and the cover front plate 13 to freezer compartment 9 and refrigerating compartment 8. The cold air distribution passage 15 is formed to face the same.

In the foam filling space in the rear region of the inner casing 5 forming the freezing chamber 9 and the refrigerating chamber 8, the cold air flow passage 23 allows the cool air from the evaporator 17 to be guided into the refrigerating chamber 8. ) And a cold air circulation duct (21) for guiding air cooled in the refrigerating chamber (8) to the evaporator (17). The cold air duct 20 has a substantially rectangular cross section and is disposed behind the cold compartment 8 from the cold air distribution passage 15 of the evaporator cover 10 disposed in the rear region of the freezer compartment 9. The cold air circulation duct 21 is disposed to face the evaporator 17 from the lower region of the rear wall surface of the refrigerating chamber 8.

Damping for controlling the temperature inside the refrigerating chamber 8 to an appropriate temperature by controlling the amount of cold air supplied from the evaporator 17 to the refrigerating chamber 8 by blocking and opening the cold air guiding passage 23 in the cold duct 20. The apparatus 50 is installed. The damping device 50 has a damper plate 51 rotatably installed in the cold air duct 20 and a damper driver 55 for rotating the damper plate 51.

The damper plate 51 is formed of a substantially square plate-like member corresponding to the cross-sectional shape of the cold air duct 20, and the rotary pin hole formed on both inner side surfaces of the cold air duct 20 on both sides of the damper plate 51. The rotary pin 53, which is rotated and supported by the 24, protrudes.

The damper driver 55 includes a drive motor 57 installed outside the cold air duct 20 and a rotation shaft 59 for transmitting the rotational force of the drive motor 57 to the damper plate 51, and the rotation shaft 59. Is connected to one side rotation pin 53 of the damper plate (51).

On the other hand, the upper and lower inner wall surfaces of the cold air duct 20 corresponding to the upper and lower ends of the damper plate 51 is formed with a receiving portion 30 along the width length direction of the cold air duct 20, The accommodating part 30 accommodates the clearance blocking member 40 which contacts the upper and lower ends of the damper plate 51 so that sliding in and out is possible.

The hook receiving portion 30 has a groove-shaped receiving portion 31 in which one side of the gap blocking member 40 is accommodated, and an entrance and exit 33 to allow the gap blocking member 40 to enter and exit. The width of the doorway 33 is smaller than the width of the accommodating part 31, and an inner side thereof is formed of the accommodating part 31 width and the stepped locking jaw 35. In the housing portion 31, a spring 37 for urging the gap blocking member 40 elastically is accommodated.

The gap blocking member 40 has a size corresponding to the width of the accommodating part 31 of the accommodating part 30, and the accommodating coupling part 41 accommodated in the accommodating part 30 and the accommodating part 30. The contact portion 43 has a width corresponding to the width of the doorway 33 and is integrally formed with the accommodation coupling portion 41, and the contact portion 43 has an inwardly inclined surface 45 corresponding to the rotational direction of the damper plate 51. ) Is formed. The gap blocking member 40 is supported to be elastically urged by the spring 37 accommodated in the hook receiving portion 30, and the receiving coupling portion 41 is latched by the catch receiving portion 30 ( 35 is accommodated in the hook receiving portion 30 to be caught. As a result, the gap blocking member 40 is slidably coupled to the hook accommodating part 30 so that the contact part 43 does not escape to the outside in a state where the contact part 43 protrudes inwardly of the cold air duct 20.

With this configuration, the cold air generated by the evaporator 17 is blown into the cold air distribution passage 15 by the blowing force of the blower fan 19, and then a part of the cold air is covered by the cover front plate 13 of the evaporator cover 10. After being supplied into the freezer compartment 9 through the cold air discharge hole (61a) formed in the), and another part of the cold air is supplied to the cold air distribution member 16 of the refrigerating compartment (8) through the cold air duct (20) The cold air supplied to the refrigerating chamber 8 through the cold air discharge hole 61b formed in the cold air distribution member 16, and the cold air supplied to the freezing chamber 9 and the refrigerating chamber 8, respectively, cool the inside of the refrigerator, and then the cold air circulation duct. Returning to the evaporator 17 through 21, heat exchange in the evaporator 17 is repeated, and then the circulation process supplied to the freezing chamber 9 and the refrigerating chamber 8 is repeated.

Meanwhile, the damper plate 51 of the damping device 50 blocks and opens the cold air guide passage 23 of the cold air duct 20 according to the temperature of the cold room 8 to maintain the temperature of the cold room 8 at an appropriate temperature. The operation of the damping device 50 is as follows.

First, when the temperature in the refrigerating chamber (8) falls below an appropriate temperature, a temperature sensor (not shown) detects this and transmits it to a controller (not shown), and the controller (not shown) sends an operation signal to the damper driver (55). By transmitting the drive motor 57 is rotated. When the driving motor 57 rotates, the rotational force is transmitted to the damper plate 51 through the rotation shaft 59 to rotate the damper plate 51 to close the cold air guide passage 23.

At this time, the upper and lower ends of the damper plate 51 are in contact with the gap blocking member 40 which is installed on the upper and lower inner wall surfaces of the cold air duct 20 and elastically protrudes toward the inside of the cold air duct 20. As a result, the gap formed between the damper plate 51 and the inner surface of the cold air duct 20 is blocked, so that the cold air guide passage 23 is entirely closed. Thereby, the cold air supplied to the refrigerating chamber 8 can be effectively interrupted, and the overcooling phenomenon of the refrigerating chamber 8 in which the temperature of the refrigerating chamber 8 falls excessively can be prevented.

When the temperature of the refrigerating chamber 8 is higher than the appropriate temperature, the temperature sensor (not shown) detects the signal and transmits the same to the controller (not shown), and the controller (not shown) operates the damping device 50 again. The damper plate 51 is rotated in the opening direction. At this time, the upper and lower ends of the damper plate 51 are rotated while pushing the inward inclined surface 45 of the gap blocking member 40, whereby the gap blocking member 40 is drawn into the hook receiving portion 30. The rotation of the damper plate 51 is allowed. Then, the damper plate 51 opens the cold air guide flow path 23 so that cold air can be supplied to the refrigerating chamber 8.

Thus, by providing the gap blocking member inside the cold air duct, it is possible to effectively block the gap formed between the damper plate and the cold air duct, thereby effectively preventing the supercooling phenomenon in the refrigerating chamber.

As described above, according to the present invention, a gap formed between the damper plate and the cold air duct inner wall surface is blocked to provide a refrigerator capable of preventing overcooling of the refrigerating compartment.

Claims (4)

A refrigerator having a main body cabinet having mutually divided freezing compartments and a refrigerating compartment, and a cold air duct for guiding cold air from an evaporator provided in a rear region of the freezing compartment to the refrigerating compartment, A damper plate rotatably installed in the cold air duct to open and close the cold air guide passage; A damper driver for rotating the damper plate; A hook receiving portion formed on an inner wall surface of the cold air duct corresponding to upper and lower ends of the damper plate and having an elastic member accommodated therein; And a clearance blocking member that is elastically slidably accommodated in the hook receiving portion and contacts the upper and lower ends of the damper plate when the guide flow path is blocked. The method of claim 1, The gap blocking member is a refrigerator, characterized in that it has an accommodating coupling portion accommodated in the hook receiving portion, and a contact portion formed integrally with the accommodating coupling portion to contact the damper plate. The method of claim 3, wherein The inwardly inclined surface corresponding to the rotation direction of the damper plate is formed in the contact portion. The method of claim 1, The elastic member is a refrigerator, characterized in that the spring.