KR100234117B1 - Refrigerator having air distribution apparatus - Google Patents

Abstract

The present invention relates to a refrigerator having a cooling chamber, comprising: a cold air duct provided on a wall surface of the cooling chamber to guide the flow of cold air and having a plurality of cold air discharge openings opened toward the cooling chamber; A rotating shaft rotatably installed in the cold air duct in a vertical direction; A plurality of rotational dispensing blades, a coupling part provided on one side of the outer diameter surface of the rotary shaft or the plurality of rotational distributing blades, and a receiving fixing part installed on the other side to detachably fix the coupling part. A rotational distribution wing part; A left and right distribution blade part formed coaxially with the rotation shaft and having a pair of left and right distribution blades fixed in opposite directions to face each other from an outer diameter surface of the rotation shaft; It characterized in that it comprises a drive motor for rotating the rotary shaft. As a result, the cooling air can be uniformly distributed in the cooling chamber in the left and right directions, and the cooling air can be discharged intensively as needed, and the cooling chamber can be more efficiently and uniformly cooled because no vortex is formed around the cooling air discharge port. have.

Description

Refrigerator with cold air distributor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly, to a refrigerator having a cold air distribution device capable of evenly distributing cold air in a cooling chamber.

As shown in FIG. 6, a conventional general refrigerator 101 has a main body 4 having a pair of cooling chambers divided into a freezing compartment 2 and a refrigerating compartment 3 partitioned by an intermediate partition 5. And a freezing chamber door 6 and a refrigerating chamber door 7 which open and close the respective cooling chambers 2 and 3. In the main body, a refrigeration system including a compressor 11, a condenser, a freezer evaporator 13b, and a refrigerator compartment evaporator 12b (not shown) is installed. The cold air generated in each of the evaporators 13b and 12b flows along the cold air duct 15 formed on the rear surfaces of the cooling chambers 2 and 3, and the cold air duct 15 is blown by the blowing fans 13a and 13b. It is supplied to each cooling chamber (2, 3) through the cold air discharge port 16 provided in the.

By the way, in the conventional refrigerator 101, there is a region where the cold air discharged through the cold air discharge port 16 is provided intensively and a region where a relatively small amount is supplied, thereby deepening the temperature deviation in the cooling chamber and thus uniformly cooling it. There is a problem that this can not be done. Thus, a refrigerator having a cold air distribution device that solves this problem has been proposed.

The refrigerator (not shown) having the cold air distribution device has the same configuration as the refrigerator 101 described above with reference to FIG. 6, and is manufactured separately and discharged into the cooling chamber through the cold air discharge port 16 in a horizontal or vertical direction. A cold air distribution device for distributing is rotatably installed in the cold air duct. As shown in FIG. 7, the cold air distribution device 110 includes a rotation shaft 121, a plurality of cold air distribution blades 111, and a drive motor 131 for rotating the rotation shaft 121. The rotating shaft 121 is rotatably installed on the rear side of the refrigerating chamber 3, and the rotating shaft 121 of the driving motor 131 is coupled to the upper portion of the rotating shaft 121. The cold air distribution blades 111 are formed in a plate-shaped body curved in a wave shape with respect to the plane including the axis of the rotation shaft 121, and are spaced apart from each other to correspond to each of the cold air discharge ports 16 along the rotation shaft 121. It is. At the upper and lower ends of each cold air distributing wing 111, a pair of end plates 113 formed of an upper plate 113a and a lower plate 113b is formed, and an intermediate plate is formed between the upper plate 113a and the lower plate 113b. 115 is provided to divide the cold air distribution blade 111 into the first blade portion 117 and the second blade portion 119. Each wing portion 117, 119 is bent to form an S-shaped cross section, and each wing portion 117, 119 of each cold air distribution wing 111 is bent in the opposite direction to each other.

In the refrigerator 101 having the conventional cold air distribution device 110 having such a configuration, when the driving motor 131 rotates the rotary shaft 121 at a low speed, the cold air supplied along the cold air duct 15 is cold air distribution wing 111. The direction of the flow path is changed by the curved plate surface of the shells, and spreads in the refrigerating chamber from side to side and is discharged. On the other hand, when intensive cooling is necessary for a specific site, the rotating shaft 121 is stopped in accordance with the direction of the cold air distribution blade 111 so that cold air is concentrated discharged toward the site. By such a cold air distribution device 110, it becomes possible to realize uniform cooling and concentrated cooling in the refrigerating chamber 3.

By the way, in the conventional refrigerator 101 which has such a cold air distribution apparatus 110, the cold air distribution blade 111 has the wing parts 117 and 119 which have a gentle S-shaped cross section, and this wing part 117, Vortex is formed around the cold air discharge port 16 by the cold air that flows along the plate surface of 119 to be discharged into the refrigerating chamber, and this vortex acts as a load in the smooth operation of the cold air distribution device 110, thereby providing effective cold air distribution. It will cause trouble. In addition, although the conventional cold air distribution device 110 can distribute cold air in the left and right directions, there is a problem in that cold air cannot be distributed in the vertical direction. Therefore, there is a limit to realize uniform cooling in the refrigerating chamber 3 as a whole in the refrigerating chamber which is gradually increasing in size.

Accordingly, an object of the present invention, in consideration of these problems in the prior art, can distribute the cold air in the left and right and up and down directions in the cooling chamber, and can be more efficiently and uniformly cooled in the cooling chamber because no vortex is formed around the cold air discharge port It is to provide a refrigerator having a cold air distribution device.

1 is a front view of a refrigerator having a cold air distribution device according to the present invention;

2 is a side cross-sectional view of FIG.

3 is an exploded perspective view of a cold air distribution device according to the present invention;

4 is a rear perspective view of the combination of FIG.

5 is a side cross-sectional view of FIG. 4;

6 is a side cross-sectional view of a refrigerator having a conventional cold air distribution device,

7 is an exploded perspective view of a conventional cold air distribution device.

<Description of the symbols for the main parts of the drawings>

2, 3: Cooling chamber 5: Intermediate bulkhead

6, 7: door 12a, 12b: evaporator

13a, 13b: blower fan 15: cold air duct

16a, 16b, 16c: cold air outlet 20: duct housing

21: duct member 28, 38: flange portion

30: cold air distribution device 40: duct cover

41: first distribution wing 43: first distribution wing

44: catching part 45: accommodation government

49; Jamming protrusion 51: second distribution wing

53: second distribution wing 55: moving groove

57: locking jaw 59: fixing hole

61: auxiliary distribution wing 63: fixed protrusion

71: upper and lower distribution wings 77: hinge pin

79: rotating pin 81: interlocking member

83: action protrusion 85: hinge protrusion

91: drive cam 97: up and down wing drive part

According to the present invention, a refrigerator having a cooling chamber, comprising: a cold air duct provided on a wall surface of the cooling chamber to guide the flow of cold air and having a plurality of cold air discharge openings opened toward the cooling chamber; A rotating shaft rotatably installed in the cold air duct in a vertical direction; A plurality of rotational dispensing blades, a coupling part provided on one side of the outer diameter surface of the rotary shaft or the plurality of rotational distributing blades, and a receiving fixing part installed on the other side to detachably fix the coupling part. A rotational distribution wing part; A left and right distribution blade part formed coaxially with the rotation shaft and having a pair of left and right distribution blades fixed in opposite directions to face each other from an outer diameter surface of the rotation shaft; It is achieved by a refrigerator comprising a drive motor for rotating the rotary shaft.

Wherein the engaging portion is a slider that protrudes in both directions along the longitudinal edge of each pivoting blade; The accommodation fixing portion is advantageously a sliding guide member having a sliding groove formed on the outer diameter surface of the rotating shaft along the circumferential direction to receive the slider in a sliding manner.

In addition, the sliding guide member is installed along the axial direction of the rotary shaft, the lower end is preferably provided with a locking projection to prevent the downward departure of the slider is formed horizontally in the axial direction of the rotary shaft.

On the other hand, each of the left and right distribution blades may be configured to be attached to the secondary distribution blades that are installed so as to flow up and down. The auxiliary distribution wing has a pair of fixing protrusions protruding from the rear edge; The plate surface of the left and right distribution blades is more effective is provided with a fixing hole for rotatably fixing the fixing projections of the one side and a moving groove that can be rotated the fixing projections of the other side.

In addition, the cooling chamber is partitioned into a plurality of storage zones arranged in the upper and lower layers; The cold air outlet is formed to correspond to the storage area; Each of the cold air discharge ports may be configured such that any one of the rotational distributing wing portion or the left and right distributing wing portion is attached.

In addition, a plurality of vertical distribution blades having an axis parallel to each other in the horizontal direction to the cold air discharge port attached to the rotational distribution blade portion; It may be configured to further include a vertical blade drive unit for rotating the vertical distribution blades within a predetermined range when the rotating shaft is rotated. On the other hand, the upper and lower wing driving portion, the drive cam is formed coaxially to the rotating shaft; It is interposed in parallel with the rotary shaft between the plurality of vertical distribution blades and the drive cam is hinged to the plurality of vertical distribution blades, and includes an interlocking member to move up and down by interacting with the drive cam when the rotating shaft is rotated. desirable.

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

1 is a front view of a refrigerator having a cold air distribution device according to the present invention, Figure 2 is a side cross-sectional view of FIG. As can be seen from these figures, the cold air-distributable refrigerator includes a pair of cooling chambers divided into a freezing chamber 2 and a refrigerating chamber 3 by an intermediate partition 5 in an almost rectangular main body. Opening / closing doors 6 and 7 are provided on the front surfaces of the openings of the cooling chambers 2 and 3, respectively. The refrigerator compartment 3 is provided with a plurality of shelves 8 for placing food to partition the refrigerator compartment 3 into a plurality of food storage areas in the vertical direction. In the upper side of the refrigerating chamber 3, a special refrigerating chamber 18 for storing food suitable for a specific temperature range is formed, and the lower side of the refrigerating chamber 3 is provided with a vegetable chamber 19 for storing vegetables.

In the main body 4, a compressor 11, a condenser, a freezer compartment evaporator 12a, and a refrigerator compartment evaporator 12b, which are not shown, are installed to perform a refrigeration cycle, and cold air is generated in each of the evaporators 12a and 12b. A freezer compartment fan 13a and a refrigerating compartment fan 13b are installed above the evaporators 12a and 12b to forcibly blow cold air generated in each of the evaporators 12a and 12b to the freezer compartment 2 or the refrigerator compartment 3.

On the rear wall surface of the refrigerating chamber 3, a duct housing 20 is provided which forms a cold air duct 15 that provides a flow path of cold air from the evaporator 12b. The duct housing 20 forms a cold air duct 15 to guide the cold air insulated, the front plate 23 attached to the front surface of the duct member 21, and the duct member 21. Seal plate 25 is bonded to the back of the, and the front plate 23 is composed of a partial cylindrical duct cover 40 is installed in a form surrounding the cold air distribution device (30). The duct cover 40 and the duct member 21 are coupled at a predetermined distance, and forms a cold air duct 15 for guiding the flow of cold air therebetween. The duct cover 40 is provided with cold air outlets 16 opened toward the refrigerating chamber 3 at predetermined intervals along the longitudinal direction thereof.

On the other hand, the cold air distribution device 30 is provided in the cold air duct 15. The cold air blown into the cold air duct 15 by the refrigerating chamber fan 13b is supplied into the refrigerating chamber 3 through the cold air distribution device 30, and at this time, the cold air distribution device 30 operating as described below in detail is Evenly distribute the cold air to the fridge. At the rear of the cold air duct 15, a circulation duct 17 connecting the refrigerating chamber 3 and the refrigerator compartment evaporator 12b is formed to be isolated from the cold air duct 15. The cold air which cooled the refrigerator compartment 3 returns to the refrigerator compartment evaporator 12b through this circulation duct 15. As shown in FIG.

Figure 3 is an exploded perspective view of the cold air distribution device according to the present invention, Figure 4 is a combined rear perspective view of Figure 3, and Figure 5 is a side cross-sectional view of FIG. As can be seen in these figures, the duct cover 40 is provided with three cold air outlets 16a, 16b, 16c opened toward the refrigerating chamber 3 at predetermined intervals along its length direction, and cold air distribution. The apparatus 30 is provided in the back side of these cold air discharge ports 16a, 16b, 16c. The duct cover 40 having the cold air discharge ports 16a, 16b, and 16c is installed in the receiving portion of the front plate 23, and the front plate 23 is formed to have a plane substantially the same as the inner wall surface of the refrigerating chamber 3. The duct cover 40 is installed to protrude from the front plate 23 into the refrigerating chamber 3. Accordingly, the duct cover 40 and the cold air distribution device 30 protrude slightly from the rear wall surface of the refrigerating chamber 3 as a whole, and the cold air guided by the cold air distribution device 30 has a large discharge angle range. Is distributed within.

The cold air distributing device 30 includes a rotating shaft 33 rotatable in the vertical direction in the cold air duct, a rotating distributing blade portion 41 and a left and right distributing blade portion 51 provided on upper and lower portions of the rotating shaft 33, and a rotating shaft ( The drive motor 35 which rotates 33) is comprised. The rotating shaft 33 has a circular rod shape, and the driving shaft of the driving motor 35 is coupled to the upper end, and the lower end is rotatable to the flange portion 28 extending in the direction perpendicular to the plate in the lower region of the duct cover 40. Is supported. Then, the drive motor 35 is composed of a stepping motor capable of forward and reverse rotation and stop angle position control.

The rotational dispensing blade part 41 is provided in the upper region of the rotation shaft 33, and the storage fixing part 45 detachably fixing the rotational distributing blade 43 and the rotating distributing blade 43 having a substantially rectangular plate-like body. Consists of The rotational dispensing wing 43 is provided with a catching portion 44 protruding with a predetermined thickness on both sides at one side edge. The locking portion 44 is formed along the longitudinal edge of the rotational dispensing wing 43 and has a substantially rectangular bar shape. The locking portion 44 serves as a slider detachably accommodated in the sliding groove 47 of the accommodation fixing portion 45 to be described later in detail.

The accommodation fixing portion 47 is constituted by a pair of sliding guide members fixed to the cylindrical surface of the rotating shaft 31 to face each other along the axial direction. Between the pair of sliding guide members 45 facing each other, a locking portion 44 of the rotational distribution blade 43, that is, a sliding groove 47 in which a slider is accommodated, is formed. The locking portion 44 of the pivoting distributing blade 43 is inserted into the sliding groove 47 to be accommodated in the longitudinal direction, and at this time, the lower portion of the pair of opposing sliding guide members 45 has a locking portion ( A locking projection 49 is formed in the sliding direction of the 44 in the horizontal direction, and the locking portion 44 is prevented from falling downward.

On the cylindrical surface of the rotating shaft 33, a pair of sliding guide members 45 having such sliding grooves 47 are provided in plural along the circumferential direction. In this embodiment, four pairs of sliding guide members 45 are provided at a predetermined separation angle, and the rotational distribution blade 43 is coupled to each of them. The rotational distribution blade 43 rotates together with the rotation shaft 33 to distribute the cold air discharged through the cold air discharge port 16a by flowing the cold air duct 15 in the left and right directions in the cooling chamber.

On the other hand, in the present embodiment has been described that the rotational distribution blades 43 are respectively installed on the four pairs of sliding guide member 45 provided on the rotary shaft 33, the manufacturer is any two of the four pairs of sliding guide member 45 Rotating distributing blade 43 may be selectively coupled to a pair or three pairs of sliding guide members 45. For example, the rotational dispensing blade 43 may be coupled to the circumferential surface of the rotating shaft 33 in opposite directions, or the three rotational distributing blades 43 may be coupled to each other. The number and spacing interval of the rotational distributing wing 43 may be determined according to the size and capacity of the refrigerating compartment 3 during the development of the refrigerator 1, and according to the result of the research thus determined, the producer distributing the rotating distributing wing 43 with simple operation. ) Can be assembled and disassembled.

In the present embodiment, four pairs of sliding guide members 45 are provided in the circumferential direction of the rotation shaft 33, but five or six pairs of sliding guide members 45 may be provided. Thus, when a suitable number and rotation angles of the pivoting blades 43 are determined when the model of the refrigerator 1 is developed, the pivoting blades 43 may be combined with a corresponding spacing angle.

On the other hand, the left and right distribution blades 51 are provided in the lower region of the rotation shaft 33, and has a pair of left and right distribution blades 53 formed parallel to both sides with respect to the rotation shaft 33. The left and right distribution wings 53 rotate integrally during the rotation of the rotary shaft 33 and serve to distribute cold air from the cold air duct 15 to the left and right.

The plate surface of each of the left and right distribution wings 43 is coupled to the upper and lower flow as an auxiliary distribution blade 61 for distributing cold air in the vertical direction. Each auxiliary distributing blade 61 has a front edge on a partial arc, and has a pair of fixing projections 63 protruding in parallel from the rear edge. In response to these fixing projections 63, the plate surface of the left and right distribution wings 43 is rotatable with a fixing hole 59 for rotatably fixing the fixing protrusion 63 on one side and a fixing groove 63 on the other side. 55). The fixing screw 65 is fastened from the other side to each of the fixing protrusions 63 of the auxiliary distributing blade 61 accommodated in the fixing hole 59 and the moving groove 55 with the left and right distributing blade 53 therebetween.

In addition, in the moving groove 55 formed on the plate surface of the left and right distribution wings 53, the locking step 57 is formed in the upper, middle, and lower stages along the longitudinal direction thereof. The fixing protrusion 63 of the other side which pivots the fixing protrusion 63 of one side is hold | maintained on either side of these latching jaws 57. As shown in FIG. According to the position of the fixing projection 63 stopped at the locking jaw 57 on one side, each auxiliary distribution blade 61 maintains a predetermined rotational angle on the plate surface of the rotation distribution blade 53. As a result, the cold air from the cold air duct 15 is guided according to the rotation angle position of the auxiliary distribution vane 61 and discharged into the refrigerating chamber.

On the other hand, among the cold air discharge ports (16a, 16b, 16c) formed up and down in the duct cover 40, the upper cold air discharge port (16a) corresponding to the rotational distribution wings 41, a plurality of vertically distributed wings (parallel to each other in the horizontal direction) 71) is installed. These up-and-down distributing blades 71 have a substantially arcuate front projection 73 and a back cutout 75 corresponding to the cold air discharge port 16a, and are provided with pivot pins 79 extending laterally from both ends, respectively. have. The duct cover 40 having the cold air discharge port 16a is provided with flange portions 38 extending in the orthogonal direction from the rear surface at both longitudinal edges thereof, and accommodates the pivot pins 79 in these flange portions 38. Rotating holes 39 are formed to face each other. The vertically distributing wing 71 is accommodated in both of the turning pins 79 in these opposed turning holes 39, and can be rotated vertically in front of the cold air discharge port 16a.

The plurality of vertically distributing blades 71 are interposed between the driving cam 91 formed on the rotating shaft 33 and the vertical distributing blade 71 and the driving cam 91 to move up and down by interacting with the driving cam 91. The upper and lower wing drives 97 composed of the members 81 rotate within a predetermined range. The interlocking member 81 is disposed in parallel with the rotating shaft 33 and hinged to the vertically distributing blades 71. Hinge pins 77 are formed in the central region of the cutout 75 of the upper and lower distribution wings 71, and hinge protrusions 85 hinged to the hinge pins 77 in the longitudinal direction of the interlocking member 81. Is formed, the vertically distributing blade 71 is rotated within a predetermined range as the interlocking member 81 moves up and down. The interlocking member 81 is further provided with a working protrusion 83 protruding toward the driving cam 91.

The drive cam 91 is elevated on the cylindrical surface of the cam body 93 and the cam body 93 which is enlarged in the radial direction of the cross section of the rotation shaft 33 between the rotational distribution blade part 41 and the left and right distribution blade part 51. It has a cam groove 95 having a camp profile. The actuating protrusion 83 of the interlocking member 81 is engaged with the cam groove 95. When the driving cam 91 rotates, the actuating protrusion 83 moves up and down along the camp profile of the cam groove 95. . At this time, the interlocking member 81 in which the action protrusion 83 is integrally raised and lowered in the axial direction.

On the other hand, a pair of guide ribs 87 which protrude toward the rear and face each other are provided in the rear central region of the duct cover 40. Guide grooves are formed between the pair of guide ribs 87, and the interlocking member 81 is formed with guide protrusions 88 which are accommodated in the guide grooves of the holding ribs 87 and are elevated. As a result, the interlocking member 81 that moves up and down by interacting with the driving cam 91 is prevented from flowing left and right by these retaining ribs 87 and the guide protrusions 88.

With this configuration, in the refrigerator 1 having the present cold air distribution device 30, the number and separation angles of the rotational distribution blades 43 of the rotational distribution blade portion 41 are determined according to the model characteristics of the refrigerator 1. By simply combining, the rotation angle of the auxiliary distribution blade 61 of the left and right distribution blade unit 51 is appropriately adjusted. Then, when the power from the outside is applied, the drive motor 35 is rotated 360 ° by the control signal of the control unit (not shown) to rotate the rotary shaft 33. When the rotating shaft 33 rotates in this way, the cold air flowing through the cold air duct 15 is distributed to the left and right by the rotation distribution blade 43 is discharged through the upper cold air discharge port (16a) of the cold air duct 15, at this time In addition, it is also distributed in the vertical direction by the vertical distributing wing 71 which rotates up and down in association with the rotation of the rotary shaft 33 at the front surface of the cold air discharge port 16a.

On the other hand, some of the cold air flowing in the cold air duct 15 is distributed in the left and right directions by the left and right distribution wings 53 of the left and right distribution wings 51, at this time, is provided on the plate surface of the left and right distribution wings 53. It is guided in the up and down direction by the rotation angle position of the auxiliary distribution blade 61 is discharged through the cold air discharge port (16b, 16c). As a result, a uniform cooling state is maintained in the cooling chamber by cold air distributed in a combination of up, down, left, and right directions.

If a temperature deviation occurs in the refrigerating chamber during operation of the cold air distribution device 30, the control unit stops the continuous rotation of the driving motor 35 by the output signal from the temperature sensor in the cooling chamber, and the cold air in the low temperature region. The rotary shaft 33 is stopped to be supplied intensively. Then, the temperature deviation in the refrigerating compartment is quickly eliminated by the cold air concentrated in the low temperature region, thereby maintaining a uniform temperature distribution in the refrigerating compartment.

As described above, according to the present invention, there is provided a refrigerator having a cold air distribution device capable of uniformly distributing cold air in the cooling chamber in the left and right and up and down directions and discharging the cold air intensively as necessary. In addition, since no vortex is formed around the cold air discharge port, the inside of the cooling chamber can be uniformly cooled more effectively.

Claims (8)

In the refrigerator having a cooling chamber, A cold air duct provided on a wall surface of the cooling chamber to guide the flow of cold air and having a plurality of cold air discharge openings opened toward the cooling chamber; A rotating shaft rotatably installed in the cold air duct in a vertical direction; A plurality of rotational dispensing blades, a coupling part provided on one side of the outer diameter surface of the rotary shaft or the plurality of rotational distributing blades, and a receiving fixing part installed on the other side to detachably fix the coupling part. A rotational distribution wing part; A left and right distribution blade part formed coaxially with the rotation shaft and having a pair of left and right distribution blades fixed in opposite directions to face each other from an outer diameter surface of the rotation shaft; And a drive motor for rotating the rotating shaft. The method of claim 1, The engaging portion is a slider protruding in both directions along the longitudinal edge of each of the pivoting blades; The accommodation fixing unit is a refrigerator, characterized in that the sliding guide member having a sliding groove which is formed along the circumferential direction on the outer diameter surface of the rotating shaft to accommodate the slider to slide in and out. The method of claim 2, The sliding guide member is installed along the axial direction of the rotating shaft, the lower end of the refrigerator, characterized in that the locking projection is provided to prevent the downward departure of the slider which is formed horizontally in the axial direction of the rotating shaft. The method of claim 2, Refrigerator, characterized in that the auxiliary distributing wings are attached to the plate surface of each of the left and right distributing blades so as to be movable up and down. The method of claim 3, The auxiliary distribution wing has a pair of fixing protrusions protruding from the rear edge; Refrigerator, characterized in that the plate surface of the left and right distribution blades is provided with a fixing hole for rotatably fixing the fixing projections on one side and a moving groove that can rotate the fixing projections on the other side. The method of claim 1, The cooling chamber is partitioned into a plurality of storage zones arranged in upper and lower layers; The cold air outlet is formed to correspond to the storage area; Each of the cold air discharge port is a refrigerator, characterized in that any one of the rotational distribution wing portion or the left and right distribution wing portion is attached. The method of claim 5, A plurality of vertically distributing blades having axes parallel to each other in a horizontal direction at a cold air discharge port to which the rotating distributing blade part is attached; The refrigerator further comprises a vertical blade driving unit for rotating the vertical distribution blades within a predetermined range when the rotating shaft is rotated. The method of claim 6, The upper and lower wing driving unit, A drive cam formed coaxially with the rotation shaft; It is interposed in parallel with the rotary shaft between the plurality of vertical distribution blades and the drive cam is hinged to the plurality of vertical distribution blades, and includes an interlocking member to move up and down by interacting with the drive cam when the rotating shaft is rotated. Featured refrigerator.

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