KR20090020401A - Cooling air discharging structure for refrigerator - Google Patents

Abstract

A cold air discharge structure of a refrigerator is provided to generate a vortex in discharged air flow by gradually increasing a sectional area of an outlet, thereby realizing uniform temperature distribution in a storing space. A cold air outlet(110) is formed in a multi duct cover(103) at a wall surface of a storing space of a refrigerator, and has a sectional area for discharge, which increases gradually toward the storing space.

Description

Cold air discharge structure of refrigerator {COOLING AIR DISCHARGING STRUCTURE FOR REFRIGERATOR}

The present invention relates to a cold air discharge structure of the refrigerator, and more particularly, by expanding the cross-sectional area of the cold air discharge port discharged to the storage space of the refrigerator toward the storage space, the cooling air discharge of the refrigerator to uniformly cool the inside of the storage space. It's about structure.

In general, a refrigerator is a device for low-temperature storage of food, and stored in a refrigerator or refrigerated according to the state of the food to be stored. The cold air supplied to the inside of the refrigerator is generated by the heat exchange action of the refrigerant, is continuously supplied into the refrigerator while repeatedly performing a cycle of compression, condensation, expansion, and evaporation, and the supplied refrigerant is supplied by convection. It is evenly distributed inside the refrigerator to store food in the refrigerator at a desired temperature.

Recently, in addition to simple refrigeration and freezing functions, various functions have been added to increase the use of refrigerators having a large capacity and a complex function.

In the form of a large-capacity refrigerator, a side by side method in which a freezer compartment and a refrigerating compartment are arranged on the left and right sides of a middle wall, and the freezer compartment is located at the bottom of the refrigerating compartment, the refrigerating compartment has a double door type bottom. Bottom freezer methods have been proposed respectively.

On the other hand, the refrigerator generally supplies the cold air heat exchanged with the evaporator to the respective storage spaces by the operation of the blower fan. That is, a cold air supply passage leading to each storage space is formed inside the wall of the refrigerator forming the storage space of the refrigerator, and cold air is supplied to the cold air supply passage by a blower fan and provided on the wall of the storage space of the refrigerator. Through the discharged cold air outlet is discharged to each storage space.

However, the prior art as described above has the following problems.

In the conventional refrigerator, since the cold air discharge port has a uniform cross-sectional area, cold air is discharged from the cold air discharge port in a linear direction, and thus the entire refrigerator is not spread evenly, and thus, a temperature deviation inside the storage space causes cooling. There is a problem of poor performance and efficiency.

In particular, the above-mentioned problems become more prominent in the current trend of increasing the storage space of the refrigerator.

On the other hand, a configuration having an additional cold air outlet may be considered, but this configuration increases the manufacturing cost of the refrigerator, and requires an additional cold air supply flow path to supply cold air to the additional cold air outlet, and to the cold air supply flow path. The friction loss caused by the increase in power consumption is a problem occurs.

An object of the present invention is to solve the problems of the prior art as described above, to provide a cold air discharge structure of the refrigerator such that the cold air discharged to the storage space of the refrigerator is evenly supplied to the storage space.

The cold air discharge structure of the refrigerator according to the present invention for achieving the above object is a cold air discharge port provided on the wall surface of the storage space for supplying cold air to the storage space formed in the refrigerator, the discharge cross-sectional area of the cold air discharge port It is characterized in that it is formed to expand toward the storage space. That is, as the cross-sectional area of the discharge port for discharging cold air to the storage space is gradually enlarged, a vortex is formed in the flow of the cold air discharged, and is uniformly supplied to the entire storage space along the inner circumferential surface of the discharge port to be expanded.

The cold air discharge port is characterized in that formed on the rear wall surface of the storage space. That is, in order to reduce the pipe loss by simplifying the cold air supply flow path which is generally provided to inject cold air into the storage space from the evaporator located at the rear of the refrigerator.

The cold air outlet is formed in a plurality of spaced apart up and down, characterized in that the cross-sectional area of the cold air outlet is reduced toward the bottom. Because, in general, the storage space is provided with a plurality of shelves for loading the storage, by the shelf the storage space is divided into a plurality of spaces. Therefore, in order to supply cold air to each space, it is because several cold air discharge ports provided spaced up and down are needed. In addition, the reason why the largest cross-sectional area of the cold air discharge port located at the uppermost point is to supply the largest amount of relatively dense cold air to the highest, so that the cold air circulation in the storage space can be efficiently generated.

Both side portions of the inner circumferential surface constituting the cold air discharge port are inclined toward both side surfaces constituting the storage space. This is because the cold air is evenly supplied to the rear left and right sides of the storage space where the supply of cold air is relatively weak, so that the cold air is more evenly supplied to the storage space.

On the other hand, the same effect can be obtained by forming the inner circumferential surface constituting the cold air discharge port as a whole toward the circumferential surface constituting the storage space.

In addition, it is also preferable to form the inner circumferential surface constituting the cold air discharge port as a plurality of steps toward the circumferential surface constituting the storage space as a whole.

Here, it is preferable to further form a screw thread on the inner circumferential surface constituting the cold air discharge port. The screw thread more efficiently supplies cold air to the entire storage space by increasing the vortex in the discharged cold air flow.

The end of the screw thread that meets the rear wall surface of the storage space, characterized in that it is provided so as to face any one of both sides forming the storage space. As a result, the cold air is evenly supplied to the rear left and right sides of the storage space in which the cold air is relatively weak.

As described above, according to the cold air discharging structure of the refrigerator according to the present invention, the cross-sectional area of the discharge port for discharging the cold air into the storage space of the refrigerator is gradually enlarged to form vortices in the flow of the cold air discharged to expand the cold air along the inner circumferential surface of the discharge port. Since it is evenly supplied to the entire storage space, there is an advantage to uniform the temperature distribution of the storage space.

Hereinafter, the cold air discharge structure of the refrigerator according to the first embodiment of the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

1 is a view showing a refrigerator employing a cold air discharge structure of a refrigerator according to a first embodiment of the present invention.

As shown in FIG. 1, the main body 10 of the refrigerator is formed in a rectangular parallelepiped shape, and the inside of the main body 10 has a refrigerating chamber 20 for freezing and storing food as a storage space in the upper and lower portions, respectively, The freezing chamber 40 is formed by partitioning the barrier 11.

The spaces of the refrigerating chamber 20 and the freezing chamber 40 each form an independent space, and the front surface is formed to be opened. Front surfaces of the refrigerating compartment 20 and the freezing compartment 40 that are opened are selectively opened and closed by doors 30 and 50, and the doors 30 and 50 open the refrigerating compartment 20 positioned above the main body 10. The refrigerator compartment door 30 which shields and the freezer compartment door 50 which shields the said freezer compartment 40 located under the main body 10 are comprised.

The refrigerating compartment door 30 is formed at both left and right sides, and both ends thereof are fixed to the main body 10 to be rotated to selectively open and close the front surface of the refrigerating compartment 20.

The refrigerating compartment door 30 selectively shielding the refrigerating compartment 20 and the inside of the refrigerating compartment 20, a drawer 21, a basket 22, and a shelf for storing foods of various sizes and conditions according to their characteristics. 23 and the like are provided.

The lower part of the front surface of the main body 10, that is, the opened front surface of the freezing compartment 40 is selectively shielded by the freezing compartment door 50. The freezer compartment door 50 is provided to selectively shield the freezer compartment 40 while sliding forward and backward.

An upper portion of the freezer compartment door 50 is provided with a freezer compartment door handle 51 so as to protrude forward so that the user can easily grip it.

In addition, a plurality of drawers 41 and baskets 42 are provided inside the freezing compartment 40 to separate and store various foods, and an ice maker 43 for making ice on one side of the freezing compartment 40. It may be provided, the ice making device 43 may be provided on the inner surface of the refrigerating compartment door 30 in some cases.

On the other hand, the rear wall surface of the inside of the refrigerating chamber 20 is provided with a cold air discharge structure 100 for supplying cold air to cool the food stored in the refrigerating chamber. This will be described in detail with reference to FIG. 2.

2 is a view showing the cold air discharge structure of the refrigerator according to the first embodiment of the present invention.

1 and 2, the cold air discharging structure 100 of the refrigerator according to the first embodiment of the present invention is provided with a plate-like member and is fixed to the rear wall surface forming the refrigerating chamber 20 The cover 103 includes a plurality of cold air outlets 110 formed in the multi duct cover.

The multi duct cover 103 is formed in the wall constituting the main body 10 of the refrigerator and communicates with the refrigerating chamber in order to supply cold air heat exchanged with an evaporator (not shown) to the refrigerating chamber 20. Combined with the exit of.

The cold air discharge port 110 is formed such that the discharge cross-sectional area is gradually expanded in the direction in which cold air is discharged.

The expansion ratio of the discharge cross section is expanded with a constant slope. That is, the inner circumferential surface 111 of the cold air outlet 110 is provided to be kept flat, but the cross-sectional area thereof is expanded. Of course, the inner circumferential surface 111 of the cold air outlet 110 may be provided to extend the cross-sectional area while being formed as a convex curved surface.

As a result, the cold air discharged into the refrigerating chamber 20 through the cold air outlet 110 is gradually enlarged in cross-sectional area of the cold air outlet 110, thereby forming a vortex due to a flow path change, and expanding the cold air outlet 110. Along the inner circumferential surface 111 of the refrigerator compartment 20 will be uniformly supplied throughout.

The cold air outlet 110 is formed in the multi duct cover 103, the multi duct cover 103 is provided on the rear wall surface of the refrigerating chamber 20 to simplify the structure of the multi duct pipe loss Can be reduced.

The inside of the refrigerator compartment 20 is divided into a plurality of spaces by the plurality of shelves 23 provided for loading the storage. Therefore, a plurality of cold air outlets 110 are required to supply cold air to each partitioned space, and the cold air outlets 110 are formed to be spaced vertically apart from the rear wall of the refrigerating chamber 20.

Furthermore, as the refrigerating compartment 20 of the refrigerator has recently increased in capacity, as illustrated in FIG. 2, the cold air outlet 110 may be provided in two or more rows.

On the other hand, the cold air outlet 110 is provided with a smaller cross-sectional area as it is located below the rear wall surface of the refrigerating chamber 20. That is, the cross-sectional area of the cold air discharge port 110 located at the top is the largest, because the cold air circulation in the refrigerating chamber 20 is efficiently performed by using a limited flow of cold air supplied through the multi duct.

That is, since the cold air supplied through the cold air outlet 110 has a relatively high density and has a property of descending downward, a large amount of cold air is supplied by supplying the largest amount of cold air through the cold air outlet 110 positioned at the highest side. You get a circulation.

Hereinafter, the shape of the cold air discharge port will be described. This will be described with reference to FIGS. 3 to 6.

3 is an enlarged view of A in FIG. 2, FIG. 4 is a cross-sectional view of II in FIG. 3, FIG. 5 is an enlarged view of B in FIG. 2, and FIG. 6 is a view of II-II in FIG. 5. It is a figure which shows a cross section.

As shown in FIGS. 4 and 6, both side portions of the inner circumferential surface 111 constituting the cold air outlet 110 are formed to be inclined to both sides of the refrigerating compartment 20 to the left and right sides with respect to the drawing, and thus the cross-sectional area thereof. Is provided to be expanded.

Both sides of the inner circumferential surface constituting the cold air discharge port means a surface corresponding to each other horizontally among the various inner circumferential surfaces, and may be made of a flat surface or a curved surface.

In addition, each of the horizontally corresponding surfaces is formed to be inclined toward both sides of the refrigerating chamber 20, both sides of the refrigerating chamber 20 located closest to each of the horizontally corresponding surfaces. It is formed to be inclined to both sides.

As a result, the cold air discharged through the cold air outlet 110 provided on the rear wall surface of the refrigerating compartment 20 is discharged toward the front of the refrigerating compartment 20 and descends to circulate to the bottom surface of the refrigerating compartment 20. . Therefore, the cold air is evenly supplied to the rear left and right spaces of the refrigerating chamber 20 where the supply of cold air is relatively weak.

The cross-sectional shape of the cold air discharge port is not limited to the shape shown in the drawings and may be formed in various forms. That is, the shape can determine the optimal shape according to the shape of the refrigerating chamber 20 in which the cold air outlet is formed.

Hereinafter, the cold air discharge process through the cold air discharge structure of the refrigerator according to the first embodiment of the present invention will be described.

The cold air that is heat-exchanged with the evaporator by the operation of the refrigerator is forcibly supplied to the inside of the wall of the refrigerator forming the refrigerator compartment 20 of the refrigerator by a blower fan with a multi duct formed to communicate with the refrigerator compartment 20, and the refrigerator compartment of the refrigerator. 20 is discharged to the refrigerating chamber 20 through the cold air discharge port 110 provided on the wall.

Next, the flow of the cold air discharged due to the sectional area of the cold air outlet 110 is gradually expanded, the vortex is formed in the flow, the flow direction is changed. Therefore, the cold air discharged through the cold air outlet 110 is evenly supplied to the entire refrigerating chamber 20.

Hereinafter, a cold air discharge structure of a refrigerator according to a second embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description, a configuration and description overlapping with those described in the first embodiment of the present invention will be replaced by the description thereof.

FIG. 7 is an enlarged view of a cold air outlet according to a second embodiment of the present invention, and FIG. 8 is a cross-sectional view of III-III in FIG. 7.

As shown in FIG. 7 and FIG. 8, the inner circumferential surface 211 constituting the cold air outlet 210 is formed of a female screw thread whose cross-sectional area is extended toward the outlet. The screw thread more efficiently supplies the cold air to the entire refrigerating chamber 20 by increasing the vortex in the discharged cold air flow.

In addition, the end of the thread that meets the rear wall surface of the refrigerating chamber 20, that is, the position of the screw thread located at the end of the cold air discharge port 110 is formed to face both sides forming the refrigerating chamber 20.

As a result, the screw thread increases the vortex in the discharged cold air flow, and the outlet direction of the flow coming out of the valley of the thread is the side forming the refrigerating chamber 20 so that the supply of the cold air is relatively weak. 20) The cold air is evenly supplied to the rear left and right spaces.

Hereinafter, the cold air discharge structure of the refrigerator according to the third embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description, a configuration and description overlapping with those described in the first embodiment of the present invention will be replaced by the description thereof.

FIG. 9 is an enlarged view of a cold air outlet according to a third embodiment of the present invention, and FIG. 10 is a cross-sectional view of IV-IV in FIG. 9.

9 and 10, the cold air discharging structure of the refrigerator according to the third embodiment of the present invention, the cold air discharge port on the wall surface of the refrigerating chamber 20 to supply cold air to the refrigerating chamber 20 formed in the refrigerator 310 is provided, the discharge cross-sectional area of the cold air discharge port 310 is formed to gradually expand in the direction in which cold air is discharged.

The cold air outlet 310 is formed on the rear wall surface of the refrigerating chamber 20.

In addition, in order to introduce cold air into the refrigerating compartment 20 from the evaporator located at the rear of the refrigerator, the outlet of the multi duct provided in the wall of the refrigerator forming the refrigerating compartment 20 is connected.

The cold air discharge port 310 is formed on the rear wall surface of the refrigerating chamber 20 spaced apart by a length set up and down, a plurality of dogs are formed.

As described above, the cold air outlet 310 may be provided in two or more rows.

In addition, the cold air discharge port 310 is provided with a smaller cross-sectional area as it is located below the rear wall surface of the refrigerating chamber 20. That is, the largest cross-sectional area of the cold air discharge port 310 located at the top is provided.

On the other hand, the inner circumferential surface 311 constituting the cold air discharge port 310 is formed to be stepped multiple times toward the circumferential surface constituting the refrigerating chamber 20 as a whole.

As a result, the cold air discharged into the refrigerating chamber 20 through the cold air discharge port 310 is gradually enlarged in a stepwise cross-sectional area of the cold air discharge port 310, thereby forming a vortex due to a flow path change, and expanding the cold air discharge port ( Along the inner circumferential surface 311 of the 310 is evenly supplied to the entire refrigerating chamber 20.

In the above, specific embodiments of the present invention have been shown and described. However, the present invention can be embodied in various forms without departing from the spirit or essential characteristics thereof, and therefore, the above-described embodiments should not be limited by the contents of the detailed description, and further described above. Even if embodiments are not listed one by one in the description, they should be construed broadly within the spirit and scope defined in the appended claims. In addition, all changes and modifications included within the technical scope of the claims and their equivalents should be covered by the appended claims.

1 is a view showing a refrigerator employing a cold air discharge structure of a refrigerator according to a first embodiment of the present invention;

2 is a view showing a cold air discharge structure of the refrigerator according to the first embodiment of the present invention;

3 is an enlarged view of A of FIG. 2;

4 is a cross-sectional view of the I-I in FIG. 3,

5 is an enlarged view of B in FIG. 2;

Figure 6 is a view showing a cross section of II-II in Figure 5,

7 is an enlarged view of a cold air outlet according to a second embodiment of the present invention;

8 is a cross-sectional view of the III-III in FIG. 7,

9 is an enlarged view of a cold air discharge port according to a third embodiment of the present invention;

FIG. 10 is a cross-sectional view taken along the line IV-IV in FIG. 9.

**** Explanation of symbols for the main parts of the drawing ****

10: body 11: barrier

20: refrigerator compartment 30: refrigerator compartment door

40: freezer compartment 50: freezer compartment door

103,203,303: Multi duct cover 110,210,310: Cold air outlet

111,211,311: inner circumference

Claims (10)

And a cold air discharge port provided on a wall of the storage space to supply cold air to the storage space formed in the refrigerator, wherein the discharge cross-sectional area of the cold air discharge port extends toward the storage space. The method of claim 1, The cold air outlet, the cold air discharge structure of the refrigerator, characterized in that formed on the rear wall surface of the storage space. The method of claim 2, The cold air discharge port is formed in a plurality of spaced apart up and down, the cold air discharge structure of the refrigerator, characterized in that the cross-sectional area of the cold air discharge port becomes smaller toward the bottom. The method according to any one of claims 1 to 3, Both sides of the inner circumferential surface forming the cold air discharge port is inclined toward both side surfaces forming the storage space cold air discharge structure of the refrigerator. The method of claim 4, wherein Cold air discharging structure of the refrigerator, characterized in that the screw thread is formed on the inner peripheral surface forming the cold air discharge port. The method of claim 5, wherein The end of the screw thread that meets the rear wall surface of the storage space, the cold air discharge structure of the refrigerator characterized in that it is provided so as to face either one of the two sides constituting the storage space. The method according to any one of claims 1 to 3, The cold air discharge structure of the refrigerator, characterized in that the inner circumferential surface constituting the cold air discharge port is inclined toward the circumferential surface forming the storage space as a whole. The method of claim 7, wherein Cold air discharging structure of the refrigerator, characterized in that the screw thread is formed on the inner peripheral surface forming the cold air discharge port. The method of claim 8, The rear wall surface rear wall surface of the storage space is a cold air discharging structure of the refrigerator, characterized in that the end of the screw thread is provided so as to face any one of both sides of the storage space. The method according to any one of claims 1 to 3, The cold air discharging structure of the refrigerator, characterized in that the inner circumferential surface constituting the cold air discharge port is formed stepped a plurality of times toward the circumferential surface of the storage space as a whole.

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