KR100229490B1 - 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 side wall of the cooling chamber to guide the flow of cold air and having at least one cold air outlet opening toward the cooling chamber; A plurality of up-and-down dispensing vanes installed on the cold air discharging outlet so as to be rotatable vertically with an axis parallel to the horizontal direction; A plurality of left and right distributing wings installed at the rear of the cold air discharging outlet so as to be rotated left and right with a parallel axis in a vertical direction; A vertically interlocking member coupled horizontally in the axial direction of each of the vertically distributing vanes and vertically rotating the vertically distributing vanes integrally when moving; Horizontally coupled members horizontally coupled to each of the left and right distribution blades in the axial direction, and horizontally interlocking members integrally rotating the left and right distribution blades coupled together during movement; A drive motor disposed above the vertical and horizontal interlocking members; It is coupled to the drive motor to be integrally rotatable, it characterized in that it comprises a rotary cam for moving the horizontal interlocking member at the same time lifting the vertical interlocking member. As a result, the cool air guided through the cool air duct can be evenly distributed in the horizontal and vertical directions, and if necessary, the cool air can be intensively discharged in a specific area by controlling the stop motor position control motor. Thus, a uniform temperature distribution is maintained in the cooling chamber.

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 for uniformly distributing cold air discharged into a cooling chamber in a horizontal and vertical direction and, if necessary, to supply cold air intensively to a specific region. .

A refrigerator having a cold air distribution device is disclosed in PCT application WO 95/27278 by the applicant of the present invention, and a number of cold air distribution devices having various types of configurations have recently been applied. 9 to 11 show a refrigerator having a conventional cold air distribution device filed by the present applicant with PCT. In the refrigerator 101 having a conventional cold air distribution device, a pair of cooling chambers divided into a freezing chamber 2 and a refrigerating chamber 3 by an intermediate partition 5 in a substantially rectangular main body is provided. Opening / closing doors 6 and 7 are provided on the front openings 2 and 3, respectively.

In the main body, a refrigeration system including a compressor 11, a condenser and a freezer compartment evaporator 12a and a refrigerator compartment evaporator 12b (not shown) is installed. The cold air generated in each of the evaporators 12a and 12b is supplied to each cooling chamber by the freezing chamber fan 13a or the refrigerating chamber fan 13b. In the rear wall of the refrigerating chamber 3, there is provided a cold air duct 15 through which cold air from the refrigerating chamber evaporator 12b is blown and flowed by the refrigerating chamber fan 13b, and within the cold air duct 15, cold air distribution is provided. The device 110 is installed in the vertical direction. On the rear wall surface of the refrigerating chamber 3, a cold air discharge port 16 through which cold air from the cold air duct 15 is discharged to the refrigerating room 3 is formed, and the cold air distribution device 110 guides the supplied cold air to the cold air discharge port. It supplies to the refrigerating compartment 3 through 16. 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 via this circulation duct 17. As shown in FIG.

As can be seen in Figure 11, the conventional cold air distribution device 110 is composed of a rotating shaft 121, a plurality of cold air distribution blades 111 and a drive motor 131 for rotating the rotating 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. The direction of the flow path is changed by the curved plate surface of the 111, spreading left and right in the refrigerating chamber and 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 and 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, the cold air distribution device 110 provided in the conventional refrigerator 101 can distribute the cold air discharged into the refrigerating chamber only in the horizontal direction, and cannot distribute it in the vertical direction, so that the temperature deviation in the refrigerating chamber is reduced. Will occur. In addition, vortices are generated around the cold air discharging port 16 due to the smooth S-shaped bend of the cold air distributing wing 111, and the vortices act as a load on the operation of the cold air distributing device 110, thereby deteriorating the operating efficiency. . In particular, in recent years, the refrigerator 101 is gradually enlarged, and the conventional cold air distribution device 110 has a limit in uniformly distributing the cold air discharged into the refrigerating chamber, and thus the cold air can be more effectively uniformly distributed cold air. There is a need for a distribution device.

Accordingly, an object of the present invention is to provide a refrigerator having a cold air distribution device that distributes the cold air discharged into the cooling chamber evenly in the horizontal and vertical directions to maintain the inside of the cooling chamber uniformly in view of these problems. To provide.

Another object of the present invention is to provide a refrigerator having a cold air distribution device which can discharge cold air intensively in a specific area if necessary, so that the temperature distribution in the cooling chamber can be maintained uniformly.

1 is a front view of a door open state 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 rotary cam according to the present invention;

Figure 5 and Figure 6 is a side cross-sectional view of the coupled state of Figure 3, a view showing the operating state of the up and down distribution blade according to the invention,

7 and 8 are cross-sectional views taken along the line I-I of Figure 6, showing the operating state of the left and right distribution wings according to the invention,

9 is a side sectional view of a refrigerator having a conventional cold air distribution device,

10 is an enlarged partial view of FIG. 9;

11 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 27: duct cover

28, 45: flange portion 30: cold air distribution device

33a, 33b: left and right distribution wings 37: rotating pin

39: fixing protrusion 40: link pin

41: lifting linkage member 42: acting portion

43: hinge coupling portion 49: support bracket

51: vertical distribution wing 52: front edge

56: rear edge 58: rotating shaft

59: hinge pin 61: drive unit

63: drive motor 65: rotary cam

67: cam groove 69: guide groove

71: horizontal interlocking member 75: working projection

According to the present invention, there is provided a refrigerator having a cooling chamber, comprising: a cold air duct provided on a side wall of the cooling chamber to guide the flow of cold air and having at least one cold air discharge port opened toward the cooling chamber; A plurality of up-and-down dispensing vanes installed on the cold air discharging outlet so as to be rotatable vertically with an axis parallel to the horizontal direction; A plurality of left and right distributing wings installed at the rear of the cold air discharging outlet so as to be rotated left and right with a parallel axis in a vertical direction; A vertically interlocking member coupled horizontally in the axial direction of each of the vertically distributing vanes and vertically rotating the vertically distributing vanes integrally when moving; Horizontally coupled members horizontally coupled to each of the left and right distribution blades in the axial direction, and horizontally interlocking members integrally rotating the left and right distribution blades coupled together during movement; A drive motor disposed above the vertical and horizontal interlocking members; It is achieved by the refrigerator characterized in that it is coupled to the drive motor to be integrally rotatable, and including a rotary cam for moving the horizontal interlocking member at the same time as lifting and lowering the vertical interlocking member.

Here, the vertical interlocking member, the hinge coupling portion with each of the vertical distribution wings are provided at predetermined intervals along the longitudinal direction; It can be configured to have an extended bending portion to interact with the rotary cam, each of the vertical distribution wings, the front edge forming the lifting portion, the flat portion, the lower portion corresponding to the cold air outlet; Rotating shafts extending laterally at both ends of the front edge; It is preferable to include the rear edge which is predetermined cut | disconnected to the front side with respect to the axis line which mutually connects the rotational shafts of both sides, and forms the rotation space of the said left-right distribution blade.

In addition, it is preferable that a hinge pin coupled to the hinge coupling portion of the vertical linking member is provided at the center of the rear edge portion of the vertically distributing blade.

On the other hand, the rotary cam, the cam body having the cylindrical shape; A cam groove having a camping profile that continuously descends on the circumferential surface of the cam body; It is more effective to include a guide groove which is recessed inwardly in an elliptical shape on the bottom surface of the cam body to form a closed loop, and the actuating portion of the vertically interlocking member is accommodated in the cam groove, so that the cam body rotates as a camp. Lifting along the pile is advantageous.

Each of the left and right distribution wings has a fixing protrusion protruding toward the rear and a link pin protruding upward from the fixing protrusion; It is effective that a link pin hole is formed in the longitudinal direction of the horizontal interlocking member so as to oscillately accommodate the link pins of the respective horizontal distribution blades.

In addition, the horizontal interlocking member is formed with a working protrusion protruding upward from a predetermined eccentric from the center, the working protrusion of the horizontal interlocking member is engaged with the guide groove formed on the bottom surface of the rotary cam of the guide groove of the rotary cam It can be configured to circulate along a closed loop.

And, the drive motor is a stamping motor capable of forward and reverse rotation and stop angle position control; The rotary cam is preferably coaxially coupled to the drive shaft of the drive motor.

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

1 is a front view of a door open state 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 described with reference to FIG. 9 of the related art, the refrigerator 1 includes a pair of cooling chambers divided into a freezing chamber 2 and a refrigerating chamber 3 by an intermediate partition 5 in a substantially rectangular body. Opening / closing doors 6 and 7 are respectively provided on the opening fronts of the respective cooling chambers 2 and 3. The refrigerator compartment 3 is provided with a plurality of shelves 8 for placing food, and partitioned into a plurality of food storage zones parallel to each other. The special refrigeration chamber 18 used for storing the food suitable for a specific temperature range is formed in the upper side of the refrigerating chamber 3, and the vegetable chamber 19 for storing vegetables is formed in the lower side of the refrigerating chamber 3. As shown in FIG.

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 includes a duct member 21 for guiding the cold air insulated, a front plate 23 attached to the front surface of the duct member 21, and a seal plate bonded to the rear surface of the duct member 21. (25) and a duct cover (27) which is coupled to the front surface at a predetermined distance from the duct member (21) below the front plate (23). The duct cover 27 has a partial cylindrical shape protruding from the rear wall surface, and forms a predetermined cold air flow path, that is, a cold air duct 15, between the duct member 21 and the duct member 21. The duct cover 27 is provided with a cold air discharge port 16 opened toward the refrigerating chamber 3 in the central region thereof, and the cold air flowing along the flow path of the cold air duct 15 is connected to the cold air discharge port 16. It is discharged into the refrigerating chamber through.

The cold air discharging device 30 in the cold air duct is provided with a cold air distribution device 30 which will be described later in detail for uniformly distributing the discharged cold air into the refrigerating chamber. 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 by the duct housing 20. 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 discharge outlet 16, and the cold air discharged to cool the refrigerating chamber 3 is circulated duct 17. Through the return to the refrigerator compartment evaporator (12b).

3 is an exploded perspective view of a cold air distribution device according to the present invention. As can be seen in the drawing, the cold air distribution device 30 is provided inside the duct cover 27, and is rotatably installed at the cold air discharge ports 16a, 16b, and 16c with parallel axes in the horizontal direction. A plurality of vertically distributing wings 51, a pair of left and right distributing wings 33a and 33b installed vertically at the rear of the cold air discharging ports 16a, 16b and 16c, and capable of rotating left and right, and the upper and lower distributing wings 51 They are rotated up and down and at the same time the left and right distribution blades (33a, 33b) is composed of a drive unit 61 for rotating left and right. On the other hand, the duct cover 27 has a central portion in the longitudinal direction protruding with respect to the reference plane, and three cold air outlets 16a, 16b, and 16c are provided in correspondence with the storage area for partitioning the refrigerating chamber 3 on the protruding plate surface. It is prepared. Accordingly, the cold air flowing through the cold air duct 15 and guided by the cold air distribution device 30 is distributed in the refrigerating chamber 3 at a large discharge angle range.

The vertically distributing blades 51 are rotatably provided three at each of the cold air discharge ports 16a, 16b, and 16c. These up-and-down distributing blades 51 are formed in a substantially plate-like body and extend laterally from both side ends of the front edge portion 52 and the front edge portion 52 each having a shape corresponding to the plate surface protruding from the duct cover 27. It has a rotating shaft 58, and a rear edge 56 connecting the two rotating shafts 58 in a straight line. The front edge 52 is composed of the rising portion 53, the flat portion 54, and the lower portion 55, the rear edge 56 is cut in an arc toward the front edge 52 to be described in detail later The rotation spaces of the right and left distribution blades 33a and 33b are formed. On the other hand, the flange portions 45 which are opposed to each other along the longitudinal direction are provided at both rear edges of the duct cover 27, and the rotation shafts 58 of the vertically distributed blades 51 are provided on these flange portions 45. The rotating shaft hole 47 for accommodating) is formed at predetermined intervals. Both rotating shafts 58 of the vertically distributed vanes 51 are rotatably received in the rotating shaft holes 47, respectively.

The left and right distribution wings 33a and 33b are provided in pairs at the rear of the cold air discharge ports 16a, 16b, and 16c at predetermined intervals, and are formed at the rear edges of the plate-shaped wing part 35 and the wing part 35. Each of the rotating pins 37 extends in the vertical direction from both side ends. The lower pivot pin 37 is rotatably received in the pivot pin hole 29 provided in the flange portion 28 extending in the vertical direction from the bottom edge of the rear surface of the duct cover 27, wherein the wing portion 35 is It is formed so that it may be caught by the three cold air | gas outlets 16a, 16b, and 16c formed in the duct cover 27 as a whole. The wings 35 of the left and right distributing wings 33a and 33b rotatably mounted are rotatably disposed in the cutouts 57 of the upper and lower distributing wings 51 as described above. In addition, fixing pins 39 protruding in the opposite direction to the wing part 35 are formed on the pivot pins 37 of the left and right distribution vanes 33a and 33b, and the fixing protrusions 39 protrude upwardly. The pin 40 is formed.

On the other hand, the drive unit 61, the drive motor 63, the rotary cam 65 is rotatably coupled to the drive motor 63, and the rotary cam 65 in interaction with the vertically distributed wing 51 ) And a lifting and lowering interlocking member 41 for vertically rotating up and down, and also a horizontal interlocking member 71 for interacting with the rotary cam 65 to rotate left and right distribution wings 33a and 33b integrally. The drive motor 63 is fixedly mounted to a support bracket 49 fixed to an upper portion of the duct cover 27 to maintain a predetermined distance from the upper cold air discharge port 16a. The drive motor 63 is composed of a stepping motor capable of forward and reverse rotation and stop angle position control.

The rotation cam 65 is coupled to the drive shaft 64 of the drive motor 63 so as to be coaxially rotatable. The rotary cam 65 has a cylindrical cam body 66 having a predetermined cross-sectional diameter, and a cam groove 67 having a camp profile that continuously lifts up and down is formed on the circumferential surface of the cam body 66. On the bottom surface of the cam body 66, as shown in FIG. 4, a substantially elliptical guide groove 69 is provided. The guide groove 69 forms a closed loop having a long radius and a short radius, and the action protrusion 75 of the horizontal interlocking member 71 to be described later is accommodated. By the interaction of the action protrusion 75 and the guide groove 69, the horizontal interlocking member 71 is movable left and right. On the other hand, in the cam groove 67 is engaged with the acting portion 42 of the elevating interlocking member 41, which will be described later, ascending and descending along the camp profile when the rotary cam 65 is rotated.

The elevating interlocking member 41 has a circular rod shape, a hinge coupling portion 43 hinged to the upper and lower distributing wings 51 rotatably installed at the cold air discharging ports 16a, 16b, and 16c, and a rotary cam 65. It has an action part 42 which meshes with the cam groove 67 of (). The hinge coupling portion 43 protrudes from the circumferential surface at predetermined intervals along the longitudinal direction of the elevating linking member 41, and these are the rear edges 56 of the rotatable vertically distributing blade 51, that is, arcuate shape. It is hinged to the hinge pin 59 formed in the central region of the rear edge 56, which is cut off. As a result, the vertically distributing blades 51 are rotatable up and down within a predetermined range when the elevating interlocking member 41 is elevated. And the action part 42 is extended and bent toward the circumferential surface of the rotary cam 65 from the upper end of the elevating linking member 41. The end of the bent extended action portion 42 is accommodated in the cam groove 67 of the rotary cam 65, and as described above, is moved up and down along the axial direction during the rotation of the rotary cam 65, thereby raising and lowering interlocking The lifting and lowering of the member 41 is possible. When the elevating interlocking member 41 is elevated, each of the vertically distributing wings 51 hinged thereto is rotated at the front of the cold air discharge ports 16a, 16b, and 16c.

The horizontal interlocking member 71 also has a circular rod shape, and link pin holes 73 are provided at both end regions. In these link pin holes 73, the link pin 39 formed in the pair of left and right distribution wings 33a and 33b is swingably accommodated. Accordingly, when the horizontal interlocking member 71 moves in the horizontal direction, the pair of left and right distributing wings 33a and 33b rotate left and right within a predetermined range. The horizontal interlocking member 71 also has a working protrusion 75 which protrudes upward from the center at a predetermined eccentricity. The action protrusion 75 extends toward the bottom surface of the rotary cam 65 to engage the guide groove 69 and moves along the closed loop of the guide groove 69 when the rotary cam 65 rotates. Thereby, the left-right distribution blades 33a and 33b can be rotated along the horizontal interlocking member 71 which moves horizontally.

With this configuration, FIGS. 5 and 6 are side cross-sectional views of the coupled state of FIG. 3, and show an operating state of the vertically distributed vanes 51 according to the present invention, and FIGS. 7 and 8 are FIGS. Fig. 1 is a cross sectional view showing an operating state of the left and right distributing wings 33a and 33b according to the present invention. The motor 63 driven by the control signal of the control part which is not shown in figure rotates the rotating cam 65 by 360 degrees. Then, the acting portion 42 engaged with the cam groove 67 formed on the circumferential surface of the cam body 66 of the rotary cam 65 moves up and down along the camp profile, and the lifting linkage member 41 formed as a single body is moved up and down. To move in the direction of Then, the vertically distributing wings 51 hinged to the elevating interlocking member 41 are rotated up and down integrally in front of the cold air discharge ports 16a, 16b, and 16c, and in FIG. 5, the vertically distributing wings 51 are in the up-rotating state. ) Are shown, and the vertically distributed blades 61 in a downwardly rotated state are shown in FIG. 6.

Meanwhile, at the same time, the action protrusion 75 of the horizontal interlocking member 71 also moves along the guide groove 69 of the rotary cam 65. At this time, the horizontal interlocking member 71 moves horizontally in the left and right direction, and rotates the left and right distributing blades 33a and 33b left and right. 7 and 8 show a state in which the left and right distributing wings 33a and 33b are rotated in a predetermined direction, respectively. As such, when the vertically distributing blade 51 and the left and right distributing blades 33a and 33b are rotated by the continuous driving of the driving motor 63, the cold air flowing through the cold air duct 15 is evenly distributed by the inside of the rotor. It is distributed and fed into the refrigerator compartment. As a result, a uniform cooling state can be maintained in the refrigerating chamber.

On the other hand, when warm air is introduced from the outside due to the opening of the door 7, etc., a predetermined temperature deviation may occur in the refrigerating chamber. At this time, the control unit detects that a temperature deviation has occurred by applying a temperature signal from a temperature sensor not shown installed in the refrigerating chamber. By sending a control signal, the cold air can be concentrated in the corresponding area. In the cold air distribution device 30 according to the present invention, the drive motor 63 is composed of a stepping motor capable of controlling the stop angle position, so that the upper and lower distribution blades 51 and the left and right distribution blades 33a and 33b have a low temperature. When the driving motor 63 is stopped to face the cold air, the cold air discharged through the cold air discharge ports 16a, 16b, and 16c is guided toward the corresponding region. At this time, the centralized cooling using the cold air distribution device 30 is performed by the combined operation of the upper and lower distribution blades 51 and the left and right distribution blades 33a and 33b, so that the centralized cooling is effective in the local specific region. Can be carried out. Therefore, the area | region which the temperature deviation generate | occur | produced can be removed quickly, and the refrigerator compartment will always be maintained in a uniform temperature distribution state.

As described above, in the refrigerator having the cold air distribution device according to the present invention, the cold air distribution device provided in the cold air duct adjacent to the cold air discharge port is guided by the cold air duct and discharged into the cooling chamber in the horizontal and vertical directions. To distribute evenly. Thus, a uniform cooling state in the cooling chamber can be maintained, so that foods to be accommodated can be stored better and safer. When a temperature deviation occurs in the cooling chamber, the driving motor capable of controlling the stop angle position can be controlled to discharge the cold air intensively in a specific region. Accordingly, the temperature deviation in the cooling chamber can be quickly removed, and thus the cooling chamber can be always formed in a uniform temperature distribution state.

Claims (10)

In the refrigerator having a cooling chamber, A cold air duct provided on a side wall of the cooling chamber to guide the flow of cold air and having at least one cold air discharge port opened toward the cooling chamber; A plurality of up-and-down dispensing vanes installed on the cold air discharging outlet so as to be rotatable vertically with an axis parallel to the horizontal direction; A plurality of left and right distributing wings installed at the rear of the cold air discharging outlet so as to be rotated left and right with a parallel axis in a vertical direction; A vertically interlocking member coupled horizontally in the axial direction of each of the vertically distributing vanes and vertically rotating the vertically distributing vanes integrally when moving; Horizontally coupled members horizontally coupled to each of the left and right distribution blades in the axial direction, and horizontally interlocking members integrally rotating the left and right distribution blades coupled together during movement; A drive motor disposed above the vertical and horizontal interlocking members; And a rotary cam coupled to the driving motor so as to be integrally rotatable, the rotary cam lifting and lowering the vertical interlocking member and horizontally moving the horizontal interlocking member. The method of claim 1, The vertical interlocking member, Hinge coupling portion with each of the vertical distribution wings provided at a predetermined interval along the longitudinal direction; Refrigerator, characterized in that having an extended bending portion to interact with the rotary cam. The method of claim 2, The upper and lower distribution wings, A front edge forming a lifting portion, a flat portion, and a falling portion corresponding to the cold air discharge port; Rotating shafts extending laterally at both ends of the front edge; And a rear edge which is predetermined cut to the front side with respect to an axis line connecting the rotation shafts of both sides to form a rotation space of the left and right distribution blades. The method of claim 3, Refrigerator, characterized in that the hinge pin is coupled to the hinge coupling portion of the vertical linking member in the center of the rear edge of the vertical distribution blade. The method of claim 1 The rotating cam, A cam body having the cylindrical shape; A cam groove having a camping profile that continuously descends on the circumferential surface of the cam body; And a guide groove recessed inward in an elliptical shape on the bottom surface of the cam body to form a closed loop. The method of claim 5, And a working portion of the vertically interlocking member is accommodated in the cam groove to move up and down along the camp profile when the cam body is rotated. The method of claim 1, Each of the left and right distribution wings has a fixing protrusion protruding toward the rear, and a link pin protruding upward from the fixing protrusion; And a link pin hole is formed in the longitudinal direction of the horizontal interlocking member so as to swing the link pins of the respective horizontal distribution blades. The method of claim 7, wherein The horizontal interlocking member is a refrigerator, characterized in that the action protrusion protruding upward from the center is predetermined. The method of claim 8, The actuating projection of the horizontal interlocking member is engaged with the guide groove formed on the bottom surface of the rotary cam circulated along the closed loop of the guide groove of the rotary cam. The method according to claim 1 or 9, The drive motor is a stamping motor capable of controlling forward and reverse rotation and stop angle; The rotary cam is characterized in that coupled to the drive shaft of the drive motor coaxially.

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