KR20050105816A - Cooling air circulating apparatus for refrigerator - Google Patents

Abstract

The cold air circulation device of the refrigerator according to the present invention is formed so that the front surface is opened and the freezing compartment and the refrigerating compartment are divided by partition walls, and an evaporator and a cold air circulation fan are installed inside the rear side wall, and the cold air is in the freezing compartment. And a refrigerator body having a plurality of cold air circulation holes formed in an inner wall of the refrigerator compartment so as to be circulated to the refrigerating chamber side. A freezer compartment door and a refrigerating compartment door respectively installed on the front of the refrigerator body so as to be opened and closed; A cold air circulation passage formed in the partition wall to allow cold air to circulate with each other between the freezing compartment and the refrigerating compartment; A suction cover installed at one side of the partition wall to communicate with the cold air circulation passage and having a communication hole at one side thereof; An opening and closing portion hinged to the communication hole of the suction cover and installed to open and close the communication hole of the suction cover; It is installed to be elastically supported between the suction cover and the opening and closing portion when the pressure between the freezer compartment and the refrigerating chamber is higher than the set pressure, the opening and closing portion elastically supports to block the communication hole of the suction curve, while the pressure is set between the freezer compartment and the refrigerator compartment When the pressure is less than the opening portion is made of an elastic means for restoring to open the communication hole of the suction cover.

Description

Refrigeration air circulation unit {COOLING AIR CIRCULATING APPARATUS FOR REFRIGERATOR}

The present invention relates to a refrigerator configured to circulate cold air to each other between a freezer compartment and a refrigerating compartment, and particularly, to prevent freezer compartment cold air from entering the refrigerating compartment when opening and closing the freezer compartment door, and to allow the refrigerating compartment side cold air to enter the freezer compartment during the opening and closing of the refrigerating compartment door. It relates to a cold air circulation device of the refrigerator that can be prevented.

In general, a refrigerator is a device for freezing and storing food in a freezer by cold, or by storing food in a freezer at a low temperature to prevent deterioration of food and deterioration of freshness, and to store various types of food in a long time. Top mount type refrigerators are mainly composed of a freezer door and a refrigerating compartment door that can be opened and closed in a freezer compartment and a refrigerating compartment, respectively, but recently, as a refrigerator is enlarged, freezer compartments and a refrigerating compartment are formed on both sides. In addition, many side-by-side type refrigerators having a freezer compartment door and a refrigerating compartment door configured to be opened and closed with both end portions pivoted have been released.

1 is a front perspective view illustrating a state in which a door is opened in a general side by side refrigerator, and FIGS. 2 and 3 are perspective and exploded perspective views illustrating a suction cover mounted on a partition wall of a refrigerator according to the prior art.

In general, as shown in FIG. 1, the partition wall 3 is installed at the center of the refrigerator main body 2 with the front open as shown in FIG. 1, and the freezer compartment F and the refrigerating chamber (F) are formed by the partition wall 3. R) is formed to be partitioned, and a freezer compartment door 4 and a refrigerating compartment door 14 are installed on the front of the refrigerator main body 2 so as to be openable and closed, and a refrigerant can be circulated inside the rear of the refrigerator main body 2. Refrigeration cycles consisting of a compressor (not shown), a condenser (not shown), an evaporator (not shown), and a capillary tube or an electronic expansion valve (not shown) are installed to be connected to each other by a refrigerant pipe.

In addition, a plurality of shelves 6 and 16 may be installed in multiple stages inside the refrigerator main body 2, and storage bins 8 and 18 for storing rice or vegetables may be slid to the front of each lower side. A plurality of door baskets 9 and 19 are detachably installed inside the freezing compartment door 4 and the refrigerating compartment door 14 so that storage items including various foods and the like can be placed therein.

Here, the evaporator is installed inside the rear side of the refrigerator main body 2, and the low temperature low pressure liquid refrigerant circulating therein exchanges heat with ambient air to generate cold air, and the cold air is stored in the freezer compartment F and the refrigerating compartment ( A cold air circulation fan (not shown) is mounted around the evaporator so as to circulate to R), and a plurality of cold air circulation holes H are formed on an inner wall of the refrigerator body 2.

In particular, as shown in FIGS. 2 and 3, the partition wall 3 communicates with each other in close proximity to the storage compartments 8 and 18 and also communicates with the inside of the rear side of the refrigerator main body 2. A cold air circulation passage (not shown) is formed, and the suction cover 30 is installed in the refrigerating compartment side partition wall 3 so as to communicate with the cold air circulation passage.

At this time, the suction cover 30 is formed in the communication hole (30H) and the communication hole (30H) grill 32 is formed so that the cold air (R) side cold air flow into one side, the other side is formed to be completely open. And is installed in close contact with the partition wall 3 so as to communicate with the cold air circulation passage on the partition wall 3 side, such a suction cover 30 is formed with a hook 34 on the other side of the partition wall 3. The hook hole (not shown) is installed to be hook-assembled, and the deodorant 36, etc. are built between the suction cover 30 and the partition wall 3 to remove odor from the cold air.

Accordingly, the freezing compartment F side cold air and the refrigerating compartment R side cold air not only circulate with each other while passing through the cold air circulation passage and the suction cover 30, and are again recovered into the rear side of the refrigerator main body 2. It is recycled as it passes around the evaporator again.

In the refrigerator configured as described above, as the compressor operates, the refrigerant circulates along the compressor, the condenser, the capillary tube or the electronic expansion valve, and the evaporator, and at the same time the fan for the cold air circulation rotates, and thus the air passing around the evaporator The refrigerant passing through the evaporator is exchanged with heat to generate cold air, and the cold air is supplied to the freezing chamber F and the refrigerating chamber R through each cold air circulation hole H to exchange food or the like to freeze or refrigerate food or the like. Although it is stored, it is preferable that the cold air supplied to the freezing compartment F is supplied in a cooler state than the cold air supplied to the refrigerating compartment R.

As such, the cold air circulated in the freezing compartment F and the refrigerating compartment R is inside the rear side of the freezer compartment body 2 through the refrigerant circulation passage and the suction cover 30 by the blowing force of the cold air circulation fan. As it passes through the evaporator again, the cold air becomes cold and is supplied to the freezing compartment (F) and the refrigerating chamber (R).

However, the conventional refrigerator is formed so that the freezing compartment F and the refrigerating compartment R communicate with each other by the cold air circulation passage and the suction cover 30, so that the freezing compartment door 4 is opened and closed. As the pressure at the side is drastically higher than the pressure at the side of the refrigerating chamber R, the refrigerating chamber in which the freezer compartment F side cold air is relatively hotter than the freezer compartment F through the cold air circulation passage and the suction cover 30. Since the refrigerating chamber R is not supercooled by being supplied to the (R) side, the refrigerating chamber door 14 may be temporarily opened and closed.

In addition, when opening and closing the refrigerating compartment door 14 in a conventional refrigerator, the cold air circulation passage and the suction cover 30 are rapidly increased as the pressure at the side of the refrigerating compartment R becomes higher than the pressure at the side of the freezing compartment F. Through the cooling chamber (R) side is supplied to the freezing compartment (F) side of the refrigerator compartment relatively lower than the refrigerator compartment (R) by the cooling of the cold air supplied to the freezer compartment (F) side, the specific volume is reduced, the freezer compartment (F) side As the specific volume of is reduced, there is a problem in that the freezing chamber door 4 is temporarily opened and closed as well as a great force to open the freezing compartment door F thereafter.

The present invention has been made to solve the above problems of the prior art, even if the freezer door and the refrigerating compartment door opening and closing, even if a sudden pressure difference between the freezer compartment and the refrigerating compartment to prevent the freezer compartment cold side and the cold compartment side cold air to circulate with each other freezer and refrigerator compartment It is an object of the present invention to provide a cold air circulation device of a refrigerator which can not only control the temperature of the side accurately but also improve the operation reliability of the freezer door and the refrigerating door.

The cold air circulation device of the refrigerator according to the present invention for solving the above problems is formed so that the front and the freezer compartment and the refrigerating compartment are divided by partition walls therein, the evaporator and the cold air circulation fan in the rear side wall A refrigerator main body having a plurality of cold air circulation holes formed in an inner wall thereof so that cold air can be circulated to the freezing compartment and the refrigerating compartment; A freezer compartment door and a refrigerating compartment door respectively installed on the front of the refrigerator body so as to be opened and closed; A cold air circulation passage formed in the partition wall to allow cold air to circulate with each other between the freezing compartment and the refrigerating compartment; A suction cover installed at one side of the partition wall to communicate with the cold air circulation passage and having a communication hole at one side thereof; An opening and closing portion hinged to the communication hole of the suction cover and installed to open and close the communication hole of the suction cover; It is installed to be elastically supported between the suction cover and the opening and closing portion when the pressure between the freezer compartment and the refrigerating chamber is higher than the set pressure, the opening and closing portion elastically supports to block the communication hole of the suction curve, while the pressure is set between the freezer compartment and the refrigerator compartment When the pressure is less than the opening and closing portion is composed of elastic means for restoring to open the communication hole of the suction cover.

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

4 and 5 are a perspective view and an exploded perspective view showing a suction cover installed in the partition wall of the refrigerator according to the present invention.

As shown in FIGS. 4 and 5, the cold air circulation system of the refrigerator according to the present invention also has a partition wall 3 formed at an inner center of the refrigerator main body 2 to form a freezer compartment F and a refrigerating compartment (both sides). R) is formed and a freezer compartment door 4 and a refrigerating compartment door 14 are respectively installed on the front side of the refrigerator main body 2, and an evaporator (not shown) and a fan for cold air circulation are provided inside the rear side of the refrigerator main body 2. (Not shown) and a plurality of cold air circulation holes H are formed on the inner wall of the refrigerator main body 2, and thus the cold air circulating in the freezer compartment F and the refrigerating compartment R may be mixed with each other. In addition, a suction circulation passage (not shown) is formed in the partition wall 3 so as to be supplied into the rear side of the refrigerator main body 2 again, and a suction cover having a communication hole 50H formed at one side of the refrigerant circulation passage ( 50) is configured to be installed, in particular the In the communication hole 50H, an opening / closing part 60 for opening and closing the communication hole 50H according to the ambient pressure when opening and closing the freezer compartment door 4 and the refrigerating compartment door 14 is installed to be elastically supported by the elastic means.

In this case, reference numerals not shown refer to FIG. 1.

Here, the refrigerant circulation passage is formed in the partition wall 3 so as to communicate not only with the freezing chamber F and the refrigerating chamber R but also with the inner space at the rear side of the refrigerator main body 2. The suction cover 50 has a communication hole 50H formed at one side and the other side is completely opened so that the other side of the suction cover 50 is in close contact with the refrigerant circulation passage in the refrigerating chamber side partition wall 3. Is installed so that the hook 54 is protruded around the other side of the suction cover 50 is hook assembly to the hook hole formed in the partition wall (3) side of the refrigerating chamber (R), the suction cover 50 and A deodorant 56 or the like is embedded between the partition walls 3 to remove odors from the cold air.

At this time, the suction cover 50 has a support end 52 is formed so as to project inwardly around the communication hole (50H), and the opening and closing portion 60 is hingedly connected to both upper ends of the support end (52). Hinge holes 52a and 52b are formed.

In particular, the opening and closing part 60 is the freezer compartment F and the refrigerating compartment R side when a sudden pressure difference is generated between the freezer compartment F and the refrigerating compartment R due to opening or closing the freezer compartment door 4 or the refrigerating compartment door 14. In order to prevent the cold air from being mixed with each other as an injection block the communication hole (50H) by the pressure difference, specifically the first plate 62 for opening and closing the communication hole (50H) in the suction cover 50, The second plate 64 is formed to be connected to the first plate 62 at a predetermined angle to open and close the communication hole 50H from the outside of the suction cover 50, and the opening and closing portion 60 communicates with the suction cover. The hinge protrusions 66a and 66b are formed to protrude in the axial direction, respectively, to the connecting portions of the first and second plates 62 and 64 so as to hinge the holes 50H.

Here, the opening and closing part 60 is connected to the first and second plates 62 and 64 so as to be bent at approximately 90 ° so that the connecting portion is hinged to the upper side of the communication hole 50H of the suction cover. The hinge protrusions 66a and 66b are fitted to the hinge holes 52a and 52b on the side of the support end 52 to be hinged and elastically supported by separate elastic means.

In this case, the support hole 82 is formed in any one of the first and second plates 62 and 64 so that the opening and closing part 60 can be elastically supported by the elastic means in the communication hole 50H of the suction cover. And a support protrusion 84 protrudes from the upper side of the suction cover 50, and the elastic means is installed to elastically support the support hole 82 and the support protrusion 84. The elastic means has a linear elastic support portion 72a at one end to be fitted into the support hole 82, and a ring-shaped locking portion at the other end so that the elastic means can be locked to the support protrusion 84. A kind of spring 72 composed of 72b) elastically supports the opening and closing portion 60 by the material itself elastic force.

Accordingly, the spring 72 has the elastic support portion 72a fitted into the support hole 82 on the opening / closing portion 60 side, and the locking portion 72b supports the support protrusion inside the suction cover 50. It is fixed to the 84, the opening and closing portion 60 is the hinge projection (66a, 66b) of the hinge hole on both sides of the support end 52 of the suction cover in a state that the spring 72 is locked to one side 52a and 52b, but hinged to each other, the first and second plates 62 and 64 are elastically supported by the spring 72 to maintain a state in which the communication hole 50H of the suction cover is opened.

6A and 6B are perspective views illustrating an operating state of the suction cover part when opening and closing the freezer compartment door in the present invention, and FIGS. 7A and 7B are perspective views illustrating an operating state of the suction cover part when opening and closing the refrigerating compartment door in the present invention.

Looking at the operation of the present invention configured as described above are as follows.

When the refrigerator is operated, the refrigerant circulates along the compressor, the condenser, the capillary tube or the electronic expansion valve, and the evaporator while the fan for circulating the refrigerant is operated in the inner space at the rear side of the refrigerator main body (2). Cool air is generated by blowing air around the installed evaporator, and the generated cold air is stored in the freezer compartment F and the refrigerating chamber R through the respective cold air circulation holes H from the inner space at the rear side of the refrigerator main body 2. It is supplied to the inside, and after circulating all the freezer compartment (F) and the refrigerating chamber (R), the refrigerator main body again from the lower side of the freezer compartment (F) and the refrigerating chamber (R) through the cold air circulation passage and the suction cover (50). (2) The process that flows into the inner space of the back side is repeated.

At this time, since the first and second plates 62 and 64 are elastically supported by the spring 72 to open the communication hole 50H of the suction cover, the cold side of the freezer compartment F and the refrigerating compartment R ) Side cold air may be partially mixed with each other, but the cold air supplied to the freezing compartment F side maintains a lower temperature than the cold air supplied to the refrigerating compartment R side to freeze and store food and the like in the freezing compartment F, In the refrigerating chamber (R), food and the like are refrigerated.

As described above, the freezer compartment 4 and the refrigerator compartment door 14 are closed while cold air is circulated inside the freezer compartment F and the refrigerating compartment R, and thus the food compartment is closed. The refrigerating chamber R maintains a constant pressure.

However, when the user opens and closes the freezer compartment door 4 while the refrigerator compartment door 14 is closed, external air flows into the enclosed space inside the freezer compartment F, as shown in FIGS. 6A to 6B. As the pressure inside the freezing compartment F is rapidly increased, the cold air in the freezing compartment F is rapidly flowed toward the refrigerating compartment R along the cold air circulation passage and the suction cover 50, and thus the first pressure is increased. The first plate 62 blocks the communication hole 50H inside the suction cover 50 by pushing the plate 62, and the freezer compartment F side cold air is supplied to the refrigerating compartment R side. This not only prevents the refrigerating compartment R from being overcooled by the freezing compartment F side cold air in advance, but also increases the pressure of the refrigerating compartment R side so that the refrigerating compartment door 14 is prevented. Opening or closing temporarily It can be prevented.

In addition, when the user opens and closes the refrigerating compartment door 14 while the freezing compartment door 4 is closed, external air flows into the enclosed space inside the refrigerating compartment R as shown in FIGS. 7A to 7B. As the pressure inside the refrigerating chamber (R) is rapidly increased, the cold air in the refrigerating chamber (R) is rapidly flowed toward the suction cover (50) to push the second plate (64). The plate 64 blocks the communication hole 50H from the outside of the suction cover 50, and prevents cold air from the refrigerator compartment R side from being supplied to the freezer compartment F side, which is the refrigerator compartment R side. Of the cold air is supplied to the freezing compartment (F) side to be cooled, the specific volume is reduced to reduce the pressure of the freezer compartment (F) side to prevent the difficulty of opening and closing the freezer compartment door (4) in advance, as well as the freezing compartment ( F) The side pressure may be excessively increased to prevent the freezer compartment door F from being temporarily opened or closed.

Of course, when the sudden pressure difference between the freezer compartment F and the refrigerating compartment R is greater than the elastic restoring force of the spring 72, one of the first and second plates 62 and 64 is compressed while the spring 72 is compressed. Is operated to close the communication hole 50H in an elastically supported state, but when the pressure difference between the freezing chamber F and the refrigerating chamber R becomes smaller than the elastic restoring force of the spring 72, the spring 72 ) Is restored and one of the first and second plates 62 and 64 is operated to open the communication hole 50H.

That is, even if the pressure varies rapidly between the freezing compartment F and the refrigerating compartment R, the first and second plates 62 and 64 selectively block the communication hole 50H of the suction cover, thereby preventing the freezing compartment. (F) By preventing the cold side and the cold side of the refrigerator compartment (R) from mixing with each other, it is possible to accurately control the temperature of each freezer compartment (F) and the refrigerator compartment (R), furthermore, the freezer compartment door (4) and the refrigerator compartment door ( 14) can be prevented from being opened and closed temporarily.

The cold air circulation device of the refrigerator according to the present invention configured as described above has a cold air circulation passage formed on the partition wall partitioning the freezing compartment and the refrigerating compartment so that cold air can be circulated between the freezing compartment and the refrigerating compartment, and a communication hole is formed to communicate with it. A cover is installed, and the suction hole is connected to the opening and closing portion, which is a kind of injection molding in which the first and second plates are connected at a predetermined angle, so that the communication hole can be selectively blocked by the pressure difference. Since the first and second plates selectively block the communication holes even though the freezer door or the refrigerating compartment door is opened and closed, the first and second plates selectively block the communication holes so that the cold air in the freezer compartment and the refrigerating compartment is not mixed with each other. Not only can accurately control the temperature of the Due to the change in pressure inside the freezer compartment and the refrigerating compartment, there is an advantage that the freezer compartment door and the refrigerating compartment door can be prevented from being temporarily opened and closed at the same time and smoothly opened and closed.

1 is a front perspective view showing a state in which a door is opened and closed in a typical side by side refrigerator;

Figure 2 is a perspective view showing a suction cover mounted to the partition wall of the refrigerator according to the prior art,

3 is an exploded perspective view showing a suction cover according to the prior art,

4 is a perspective view showing a suction cover mounted on a partition wall of the refrigerator according to the present invention;

5 is an exploded perspective view showing a suction cover according to the present invention;

6a and 6b is a perspective view showing the operating state of the suction cover portion when opening and closing the freezer door in the present invention,

7A and 7B are perspective views illustrating an operation state of a suction cover part when opening and closing a refrigerating compartment door in the present invention.

<Explanation of symbols on main parts of the drawings>

2: refrigerator body 4: freezer door

14: refrigerator door 50: suction cover

60: opening and closing part 62,64: first and second opening and closing part

66a, 66b: hinge protrusion 72: spring

72a: elastic support portion 72b: locking portion

82: support hole 84: support protrusion

Claims (4)

The front is opened and the freezer compartment and the refrigerating compartment are formed inside the partition wall by the partition wall, and an evaporator and a cold air circulation fan are installed inside the rear side wall, and a plurality of inner walls are provided to allow the cold air to be circulated to the freezer compartment and the refrigerating compartment side. A refrigerator body having two cold air circulation holes; A freezer compartment door and a refrigerating compartment door respectively installed on the front of the refrigerator body so as to be opened and closed; A cold air circulation passage formed in the partition wall to allow cold air to circulate with each other between the freezing compartment and the refrigerating compartment; A suction cover installed at one side of the partition wall to communicate with the cold air circulation passage and having a communication hole at one side thereof; An opening and closing portion hinged to the communication hole of the suction cover and installed to open and close the communication hole of the suction cover; It is installed to be elastically supported between the suction cover and the opening and closing portion when the pressure between the freezer compartment and the refrigerating chamber is higher than the set pressure, the opening and closing portion elastically supports to block the communication hole of the suction curve, while the pressure is set between the freezer compartment and the refrigerator compartment If the pressure is less than the cold air circulation system of the refrigerator characterized in that the opening and closing portion made of an elastic means for restoring to open the communication hole of the suction cover. The method of claim 1, The suction cover is a cold air circulation device of the refrigerator, characterized in that installed in the refrigerating chamber side partition wall to communicate with the cold air circulation passage. The method according to claim 1 or 2, The opening and closing part is a first plate for opening and closing the communication hole inside the suction cover, a second plate formed to be connected to the first plate at a predetermined angle to open and close the communication hole outside the suction cover, and the first and second plates And a hinge protrusion for protruding in the axial direction to the first and second plate connecting portions so as to be hinged to the communication hole of the suction cover. The method of claim 3, wherein The elastic means is a ring-shaped fixed to the support projection formed to be formed in one end of the linear elastic support portion to be inserted into the support hole formed in any one of the first and second plates to protrude on the inner surface of the suction cover Cold air circulation system of the refrigerator, characterized in that the engaging portion is a spring formed on the other end.