KR200217739Y1 - Cold air disperser of refrigerator - Google Patents

Abstract

The present invention relates to a cold air dispersing device of a refrigerator, and an object thereof is to install a plurality of blades pivoting up and down on the front side of the rotary blade to supply cold air up and down, and to drive the blade more easily. .

According to the cold air dispersing device 100 of the refrigerator according to the present invention, the cold air is evenly distributed in the vertical direction as well as the left and right of the refrigerating chamber 40 by the rotary blade 120 and the blade 130 installed so as to rotate vertically in front of the refrigerator. Supplied. Accordingly, since the upper and lower discharge directions and amounts of cold air can be adjusted, this can be realized when intensive cooling to the upper and lower portions is required. And since the connecting projection 141 of the connecting member 140 for driving the blade 130 in the vertical direction is simply seated and supported by the gradient surface 126 of the drive tube 125, along the gradient surface 126 The connection protrusion 140 is easily slipped to move up and down more smoothly, whereby it is possible to more stably supply and distribute cold air and to reduce operating noise, thereby improving product reliability.

Description

Cold air disperser of refrigerator

The present invention relates to a cold air dispersing apparatus of a refrigerator, and more particularly, to a cold air dispersing apparatus of a refrigerator which is installed on the rear wall of the refrigerator compartment and supplies cold air introduced from the evaporator side in three directions.

In general, the refrigerator is to maintain the freshness of various foods for a long time by supplying the cold air generated from the evaporator of the freezing cycle to the storage compartment, Figure 1 is a cross-sectional view showing the internal structure of such a conventional refrigerator.

Conventional refrigerators, as shown in Figure 1, forming an outer body therein And a refrigerator main body 1 having a storage compartment 2 and 4 formed therein, and a refrigeration cycle driving element such as an evaporator 1a built in the refrigerator main body 1.

The storage compartment is divided up and down by the intermediate partition 3 into the freezing compartment 2 and the refrigerating compartment 4. The intermediate compartment 3 has air that has undergone heat exchange in the freezing compartment 2 and the refrigerating compartment 4 toward the evaporator 1a. A return duct 3a for returning is provided.

The evaporator 1a for generating cold air is provided at the rear side of the freezing chamber 2, and a fan 1c for forcedly blowing the cold air generated above the evaporator 1a is disposed. Moreover, the duct 1b which guides the cold air blown by the fan 1c to the freezer compartment 2 and the refrigerating compartment 4 side is installed in the rear wall of the freezer compartment 2 and the refrigerating compartment 4, respectively.

A cold air inlet 2a is provided on the rear wall of the freezing chamber 2 so that cold air blown by the fan 1c is directly introduced into the freezing chamber 2.

In the refrigerating chamber 4 side duct 1b, a cold air dispersing device 5 is provided for dispersing and supplying cold air, which drives the rotary vanes 6 and the rotary vanes 6 arranged in the vertical direction. Drive motor 7 and the like.

The rotary blade 6 is for distributing and supplying the cold air introduced through the duct 1b into the refrigerating chamber 4, and has a plurality of discs arranged so as to be orthogonal to the plate vertically placed so that the cold air is distributed from side to side. do.

When the fan 1c is driven in the refrigerator configured as described above, a part of the cold air generated by the evaporator 1a is introduced into the freezer compartment 2 through the cold air inlet 2a, and the other part is downward along the duct 1b. It is guided and continuously distributed to the refrigerating chamber 4 through the cold air dispersing apparatus 5. After the heat exchange is performed in the freezer compartment 2 and the refrigerating compartment 4, the air is converted into the inlet cold side through the return duct 3a to the evaporator 1a side, and the continuous cold air circulation Is done.

However, in such a conventional refrigerator, since the cold air supplied to the refrigerating chamber 4 through the cold air dispersing device 5 is dispersed only to the left and right sides, there is a limitation in maintaining the temperature distribution inside the refrigerating chamber 4 uniformly.

That is, when the rotary blade 6 is rotated by the drive motor 7, the cold air flowing through the duct (1b) is distributed to the left and right by the disc of the rotary blade (6), whereby the cold air is the refrigerating chamber (4) By distributing and supplying only from the rear wall to the left and right sides, the temperature distribution of the refrigerating chamber 4 cannot be kept uniform throughout.

In particular, this problem is more evident under the recent situation in which a large refrigerator is preferred, and it is not possible to uniformly cool the large-capacity refrigerator compartment 4, and there is a high temperature or bulky food in the upper or lower portion of the refrigerator compartment 4. If it is located, there is a disadvantage that can not be concentrated cooling for this temperature compared to the other parts of the refrigerating compartment (4), the temperature is relatively high, the cold air circulation is not made smoothly.

The present invention is to solve such a problem, the main purpose of the present invention is to install a plurality of blades to be rotated in the vertical direction on the front side of the rotary blade to discharge the cool air discharged into the storage compartment in the vertical direction as well as the left and right direction It is to provide a cold air dispersing device of the refrigerator that can be dispersed.

And another object of the present invention is to provide a cold air dispersing device of the refrigerator that can drive a plurality of blades at the same time by using the rotational force of the rotary blade.

1 is a side cross-sectional view showing the inside of a conventional refrigerator.

Figure 2 is a side cross-sectional view showing the internal structure of the refrigerator according to the present invention.

3 is an exploded perspective view showing an extract of the cold air dispersing apparatus according to the present invention.

Figure 4 is a side view showing a coupling state of the rotary blade and the connector of FIG.

* Description of the symbols for the main parts of the drawings *

10: refrigerator body 20: 40: storage room 100: cold air dispersing device

110: duct cover 120: rotary wing 125: drive tube

126: gradient surface 130: blade 131: rotation roller

132: moving roller 140: connecting member 141: connecting projection

The present invention for achieving this object is;

It includes a refrigerator body having a storage compartment inside, an evaporator provided in the refrigerator body to generate cold air, a duct for guiding the cold air generated in the evaporator to the storage compartment, and a cold air dispersing device for distributing and supplying the cold air introduced through the duct to the storage compartment. ,

The cold air dispersing device includes a duct cover disposed on the rear wall of the storage compartment to cover the duct, a rotary vane installed in the duct cover in a vertical direction and provided with a plurality of vanes on the rotating shaft to distribute cold air from side to side, and to drive the rotary vane. And a plurality of blades comprising a drive motor for a semicircular plate that is disposed on the front side of the rotary blade and whose ends are rotatably coupled to both sides of the duct cover so as to distribute the discharged cold air in the vertical direction. In the refrigerator having a connecting member arranged in association with the rod so as to be coupled to the line movement at intervals,

In the middle of the connecting member is provided with a connecting protrusion formed to project rearward,

In the middle of the rotation axis of the rotary blade is provided with a drive tube in which the tip of the connecting projection is seated on the upper surface, the upper surface of the drive tube is characterized by consisting of a gradient surface inclined at a predetermined angle so that the connecting member is moved up and down when the rotary blade is rotated. It is a constitution.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. Briefly explaining the accompanying drawings, Figure 2 shows the overall internal structure of the refrigerator to which the present invention is applied, Figures 3 and 4 are shown to extract the cold air dispersing apparatus according to the present invention.

Referring to FIG. 2, the refrigerator according to the present invention includes a refrigerator main body 10 having a housing 20 and 40 formed therein so as to store and store food, and an evaporator 11 for generating cold air. And a cold air dispersing device 100 for distributing and supplying the cold air generated by the evaporator 11.

The storage compartment is divided up and down by the intermediate partition 30 and is divided into a freezing compartment 20 and a refrigerating compartment 40. The intermediate partition 30 is provided with a return duct 31 for guiding cold air return to the evaporator 11 side. It is.

Behind the freezer compartment 20, an evaporator 11 and a fan 13 for forcibly blowing the cold air generated by being disposed directly above the evaporator 11 to the freezer compartment 20 and the refrigerating compartment 40 side are provided. The duct 12 is erected on the rear wall of the freezing chamber 20 and the refrigerating chamber 40 so that the cold air forcedly blown by the fan 13 is smoothly supplied into the freezing chamber 20 and the refrigerating chamber 40. Reference numeral 21 is a cold air inlet blown by the fan (13).

In addition, the cold air dispersion destination 100 is disposed on the rear wall of the refrigerating chamber 40 to discharge the cold air introduced through the duct 12 evenly and vertically.

3 and 4, the cold air dispersing device 100 is a duct cover 110 covering the front of the duct 12, and is inserted in the vertical direction in the duct cover 110, the rotary blade for dispersing cold air from side to side 120 and a plurality of blades 130 for distributing a part of the cold air discharged and disposed on the front side of the rotary blade 120 in the vertical direction, and the blade 130 is received by receiving the rotational force of the rotary blade 120. It is provided with a connecting member 140 for moving in the vertical direction.

The duct cover 110 is installed on the rear wall of the refrigerating chamber 140, and is provided with an opening 111 formed to open in the front and rear, and a driving motor 113 for driving the rotary blade 120.

Rotating holder 114 is formed on the front surface of the duct cover 110 so that the plurality of blades 130 are rotatably installed at both sides of the opening 111, and the connecting member is formed at the middle of the opening 111. Guide portion 112 provided with a groove in the vertical direction to guide the shangdong of the 140 is configured. Rotating holder 114 has a predetermined space is formed so that both ends of the blade 130 can be inserted therein and is composed of a pair on the left and right sides.

The inlet-side spacing of the rotating holder 114 composed of the free end is made smaller than the end diameter of the blade 130, it is extended to the outside when the blade 130 is inserted, it is restored when the insertion is completed. At this time, the inner side of the rotation holder 114 is composed of a circular groove so that the end of the blade 130 is rotatable.

In addition, the front of the duct cover 110 is coupled to the cover panel 115 having a plurality of discharge holes 116 perforated, thereby protecting the internal components and at the same time guides the cold air. At this time, the discharge hole 116 is preferably configured in a portion corresponding to the installation position of the blade 130.

And the rotary blade 120 is installed in the duct cover 110 up and down and the rotating shaft 121 coupled to the drive motor 113, a plurality of wings 122 provided on the upper and lower sides of the rotating shaft 121, and the rotating shaft ( A driving tube 125 provided between the midway portions 121 of the upper and lower wing portions 122 is provided.

The wing 122 is disposed to be inclined in the direction crossing each of the rotating plate 123 provided up and down, or is composed of a disk 124 provided in a direction orthogonal to each other.

The drive tube 125 is a cylindrical tube provided between the wing portions 122 to have the same diameter as the disc 124 of the wing portion 122, the upper surface thereof is formed with a gradient surface 126 inclined to a predetermined angle.

That is, the upper end of the drive tube 125 is opened so that the rotation shaft 121 is disposed to penetrate in the axial direction, and the opening end is formed of an inclined gradient surface 126, and the end and the tenon of which the axial lengths are different with respect to the center. Consists of On the gradient surface 126 of the drive tube 125 is disposed so as to be in contact with the connecting projection 141 of the connecting member 140, which will be described later, the rotary member (120) descending downward by its own weight 120) When the rotation is to move in the vertical direction.

In addition, a plurality of blades 130 are disposed at regular intervals in the vertical direction at the front side of the rotary blade 120, that is, the front surface of the opened duct cover 110 so as to guide the cold air introduced from the rear in the vertical direction. do.

The blade 130 is made of a semi-circular plastic injection molding having a semicircular groove larger than the diameter of the rotary blade 120 so as not to interfere with the rotational movement of the rotary blade 120, both ends of the duct cover 110 It is coupled to the rotational movement on both sides and the center thereof is coupled to the connecting member 140. To this end, tubular rotating rollers 131 are disposed at both ends of the blade 130 so as to be rotated in combination with the rotating holder 114 of the duct cover 110. Therefore, the rotation roller 131 is elastically fitted to the rotation holder 114, the blade 130 is able to rotate 180 degrees in the vertical direction. And the moving roller 132 is provided on the center of the blade 130 to be rotatably coupled to the connecting member 140. This moving roller 132 is configured in a tubular shape having a predetermined diameter of the counterweight.

In addition, the connecting member 140 is to drive the plurality of blades 130 at the same interval to connect integrally, it is composed of a kind of rod-like configuration that is formed up and down long, the middle of the connecting projections 141 protruding rearward Is formed.

The connection protrusion 141 is simply supported by the front end is seated on the gradient surface 126 of the drive tube 125, thereby moving up and down along the gradient surface 126 during the rotation of the rotary blade 120, thereby rotating the rotor ( The rotational movement of the 120 is converted to a linear movement of the connecting member 140. At this time, the intermediate portion of the connecting member 140 having the connecting protrusion 141 is disposed in the axial direction inside the guide portion 112 provided in the duct cover 110 to reciprocate in the vertical direction without the left and right flow.

A plurality of moving holders 142 are provided on the rear surface of the connection member 140 such that the moving rollers 132 of the blade 130 are fitted with a margin. The moving holder 142 is configured in the same direction as the connecting protrusion 141 to the connecting member 140 made of plastic injection molding.

That is, the moving holder 142 is composed of a pair so that the moving roller 132 can be inserted to the inside with a margin, the interval of the inlet side is configured smaller than the diameter of the moving roller 132, the circular space therein Formed. Therefore, after combining the plurality of blades 130 through the rotation holder 114 and the rotation roller 131 on the front of the duct cover 110, and inserts the movement roller 132 into the movement holder 142, the free end movement The front end of the holder 142 is elastically deformed outward, and is restored again when the insertion is completed, and the moving roller 132 is rotatably coupled.

Then, the plurality of blades 130 are rotated one by one from the upper side to the lower side to insert and fix the moving roller 132 to the corresponding moving holder 142, and also to seat the connecting projection 141 on the gradient surface 126. It is preferable.

Therefore, when the rotary blade 120 rotates, due to the lifting and lowering movement of the connecting projection 141 seated on the gradient surface 126, the plurality of blades 130 to rotate in the vertical direction about the rotation roller 131. This is described in detail in the description of the operation.

Next will be described the operation and effect of the cold air dispersing device 100 according to the present invention configured as described above.

First, when the fan 13 disposed above the evaporator 11 is driven, a portion of the cold air generated by the evaporator 11 is guided to the freezer compartment 20 through the cold air inlet 21 to cool the food stored therein. The other part is lowered down through the duct 12 and is evenly distributed and supplied to the refrigerating chamber 40 by the cold air dispersing apparatus 100.

In addition, the air that has completed the cooling operation in the freezing compartment 20 and the refrigerating compartment 40 is re-introduced to the evaporator 11 through the return duct 31, thereby continuously maintaining the cold air circulation.

At this time, the cold air supplied to the refrigerating chamber 40 is dispersed three-dimensionally up, down, left, and right through the cold air dispersing device 100. That is, when the rotary blade 120 is rotated by the drive of the drive motor 113, the cold air introduced into the duct 12 is supplied to the left and right while hitting the wing 122.

In addition, the connection protrusion 141 slides along the gradient surface 126 at the same time as the rotational movement of the rotary blade 120 is moved in the vertical direction, the connection member 140 is also raised and lowered.

Therefore, the plurality of blades 130 connected through the connecting member 140 integrally rotate up and down, so that a part of the cold air distributed from side to side hits the blade 130 and is dispersed up and down again. As a result, the cold air is distributed to the refrigerating chamber 40 by the rotary blade 120 and the blade 130 in vertical and horizontal directions.

On the other hand, the ascending and descending movement of the connecting member 140 is made by a connecting protrusion 141 sliding along the gradient surface 126, the sliding movement of the connecting protrusion 141 is a connecting protrusion ( 141) The tip is simply seated on the gradient surface 126, making it easy.

That is, the connection protrusion 141 of the connection member 140 is held and supported by the gradient surface 126 of the driving tube 125 by its own weight, so that the gradient surface 126 when the rotary blade 120 rotates. Sliding along, the position movement up and down more smoothly and the operating noise is also reduced.

As described above in detail, according to the cold air dispersing apparatus of the refrigerator according to the present invention, the cold air is evenly distributed and supplied in the vertical direction as well as the left and right sides of the refrigerating chamber by the rotary blades and the blades installed in the front and rear rotation thereof. Accordingly, since the upper and lower discharge directions and amounts of cold air can be adjusted, this can be realized when intensive cooling to the upper and lower portions is required. And since the connecting projection of the connecting member for driving the blade in the up and down direction is simply instructed to be seated on the gradient surface of the drive tube, the connecting projection is easily slid along the gradient surface, thereby making the vertical movement more smoothly. By this, the cold air can be more stably distributed and the operating noise is reduced, thereby improving the product reliability.

Claims (1)

A refrigerator main body 10 having a storage compartment therein, an evaporator 11 provided in the refrigerator main body 10 to generate cold air, and a duct 12 for guiding cold air generated by the evaporator 11 to the storage chamber 40. ), And a cold air dispersing device 100 for distributing and supplying the cold air introduced through the duct 12 to the storage compartment 40, The cold air dispersing apparatus 100 is installed in the duct cover 110 disposed on the rear wall of the storage chamber 40 to cover the duct 12, and is installed in the duct cover 110 in the vertical direction and distributes cold air from side to side. Rotating blades provided with a plurality of wings 122 on the rotary shaft 121, a drive motor 113 for driving the rotary blades 120, and is disposed on the front side of the rotary blades 120 A plurality of blades 130 having a semi-circular plate shape that both ends are rotatably coupled to both sides of the duct cover 110 to guide the discharged cold air in the vertical direction, and the center of the blade 130 at equal intervals In the refrigerator having a connecting member 140 extending in the shape of a rod so as to be rotatably coupled, In the middle of the connection member 140 is provided with a connecting projection 141 protruding rearward, In the middle of the rotary shaft 121 of the rotary blade 120 is provided with a hollow driving tube 125, the front end of the connecting projection 141 is seated and supported, the upper surface of the drive tube 125 is the rotary blade Cold air dispersing device of the refrigerator, characterized in that consisting of a gradient surface 126 inclined at a predetermined angle so that the connection member 140 is moved up and down when the rotation of 120.