KR19990012524A - Refrigerator with cold air distributor - Google Patents

Abstract

The present invention relates to a refrigerator having a cooling chamber for storing food, comprising: a cold air duct installed on one side wall of the cooling chamber to guide the flow of cold air, and having a cold air outlet opening toward the cooling chamber; A plurality of cold air distribution blades rotatably installed in the cold air discharge region by axes parallel to each other; And a rotation driving means for rotating the cold air distribution wing. Thereby, effective uniform cooling and concentrated cooling can be achieved in the cooling chamber with the cold air distributing wing which can rotate left and right.

Description

Refrigerator with cold air distributor

The present invention relates to a refrigerator, and more particularly, to a refrigerator having a cold air distribution device that performs uniform cold air distribution in a refrigerating chamber.

A refrigerator having a conventional cold distribution device is disclosed in PCT application WO 95/27278 by the applicant of the present invention, and FIGS. 7 to 9 show a refrigerator having such a conventional cold distribution device. 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.

On the other hand, in the rear wall of the refrigerating chamber 3, a cold air duct 15 is provided in which cold air from the refrigerating chamber evaporator 12b is blown by the refrigerating chamber fan 13b and flows therein. The cold air distribution 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.

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 having such a cold air distribution device 110, there is a limit to effectively uniformly cool the inside of the cooling chamber gradually increasing in size due to the configuration of the cold air distribution device 110, and the gentle S-type. There is a problem that vortices are formed around the cold air discharge port 16 due to cold air flowing along the wing portions 117 and 119 having cross sections, thereby impairing good operation. In addition, since the cold air distribution device 110 is not easy to manufacture, there is a problem that the manufacturing cost of the device is increased.

Therefore, the object of the present invention, in consideration of such a conventional problem, can be manufactured inexpensively, can operate well without generating vortices around the cold air discharge port, it is mounted in a large refrigerator to effectively cool the inside of the cooling chamber effectively One would be to provide a refrigerator.

1 is a front sectional 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 to 6 is an assembled perspective view of Figure 3, showing a cold air distribution state by the cold air distribution device according to the present invention,

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

8 is a partially enlarged view of FIG. 7;

9 is a perspective view of a conventional cold air distribution device.

Explanation of symbols for 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

16: cold air outlet 17: circulation duct

21: duct member 30: cold air distribution device

33: cold air distribution wing 35: rotating shaft

37: action projection 40: duct cover

41: support 43: pivot shaft

51: rotation drive part 53: interlocking member

55: projection receiving groove 57: slot

61: drive motor 65: eccentric rotating body

69: eccentric protrusion 71: guide member

73: sliding groove

According to the present invention, in the refrigerator having a cooling chamber for storing food, the cold air duct is provided on one side wall of the cooling chamber to guide the flow of cold air, and has a cold air outlet opening toward the cooling chamber. Wow; A plurality of cold air distribution blades rotatably installed in the cold air discharge region by axes parallel to each other; It is achieved by a refrigerator comprising a rotation drive means for rotating the cold air distribution wing.

Here, the rotation driving means is preferably configured to rotate the cold air distribution wing within a predetermined operating range. At this time, the cold air distribution wing has a rotating shaft extending in both longitudinal ends; It can be simply configured to include a support that is fixed to the cold air duct to rotatably support the rotating shaft.

The rotation drive means, the drive motor; It is preferable to have a rod-shaped interlocking member which is reciprocally movable by the drive motor and is disposed transversely on the rotational axis of each cold air distribution blade and hinged to each of the cold air distribution blades.

Here, the cold air distribution wing is formed with a working projection extending in the axial direction horizontally; The interlocking member may be provided with a projection receiving hole for receiving the actuating protrusion in a swingable manner, such that the cold air distribution wing rotates left and right according to the flow in the interlocking member.

The interlocking member has a slot formed transversely in the longitudinal direction; It may be configured to further include an eccentric rotating body coupled to the rotating shaft of the drive motor and rotatable with the rotating shaft, and having an eccentric rotating shaft accommodated in the slot with a predetermined eccentric radius with respect to the rotating shaft.

On the other hand, it is preferable to further include a guide member for guiding the reciprocating motion of the interlocking member.

The cold air duct includes: a duct cover in which the cold air discharge port is formed; It may be configured as a duct member coupled to a predetermined interval to form a cold air flow path between the duct cover, the cooling chamber is partitioned into a plurality of storage zones arranged in the upper and lower layers, the cold air outlet and the cold air distribution Wings may be provided to correspond to all of the storage areas.

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

1 is a front sectional view of a refrigerator having a cold air distribution device according to the present invention, Figure 2 is a side sectional view of FIG. As can be seen from these figures, the refrigerator 1 having the present cold air distribution device is, as described with reference to FIGS. 7 to 9 in the related art, by the freezer compartment 2 by the intermediate partition 5 in a substantially rectangular body. ) And a refrigerating chamber 3 are provided, and a pair of cooling chambers are provided, and opening / closing doors 6 and 7 are provided on the opening front of each cooling chamber 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. 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.

The cold air duct 15 is provided in the rear wall surface of the refrigerating chamber 3. The cold air duct 15 is composed of a duct member 21 and a duct cover 23 which is coupled to the front surface of the duct member 21 to form a predetermined cold air flow path therebetween. The cold air discharge port 16 opened toward the refrigerating chamber 3 is formed. The cold air discharge ports 16 are provided in three directions along the vertical direction corresponding to the storage area in the refrigerating chamber. The cold air distribution device 30 is installed in the region adjacent to the cold air discharge port 16 in the cold air duct 15, and the cold air blown into the cold air duct 15 by the refrigerating chamber fan 13b causes the cold air distribution device 30 to be removed. It is supplied into the refrigerating chamber 3 through. 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.

3 is an exploded perspective view of a cold air distribution device according to the present invention. The cold air distribution device 30 of the present invention supports a plurality of cold air distribution blades 33 having vertical rotational axes parallel to the cold air discharge region, and a plurality of cold air distribution blades 33 so as to be able to rotate left and right. It consists of the support part 41 which rotates, and the rotation drive part 51 which rotates the rotatable cold air distribution blade 33 left and right. Each cold air | distribution blade 33 has a substantially square plate shape, and has the rotation shaft 35 extended from both ends in parallel with the edge part of the longitudinal direction. The support portion 41 is a pair having a substantially rectangular plate shape, and is fixedly installed to face each other in the horizontal direction at the upper and lower portions of the duct cover 40 on which the cold air discharge ports 16 are formed, respectively. Accordingly, a plurality of rotating shaft holes 43 are formed at predetermined intervals. Accordingly, the cold air distributing wing 33 in which the two rotation shafts 35 are accommodated in the opposed up and down rotation shaft holes 43 is rotatable left and right about the rotation shaft 35.

On the other hand, the rotation drive unit 51 is provided in the cold air duct, is disposed in the transverse direction on the rear side of the drive motor 61, the cold air distribution wing 33 and hinged to each cold air distribution wing (33). The interlocking member 53 and the eccentric rotating body 65 which is interposed between the drive motor 61 and the interlocking member 53 to transmit the rotational force of the drive motor 16 to the interlocking member 53 is provided. The interlocking member 53 has a rod shape having a predetermined thickness, and the projection receiving groove 55 is provided at a predetermined interval along the longitudinal direction. In these projection accommodation grooves 55, the working projections 37 extending horizontally, ie, toward the interlocking member 53, in each of the axial directions of the cold air distribution blades 33 are accommodated so as to be swingably supported. As a result, when the interlocking member 53 is reciprocated in the horizontal direction, each of the cold air distributing wings 33 which are integrally hinged to the interlocking member 53 are rotated left and right together on the pivot shaft 35. .

The drive motor 61 is fixedly installed on the upper inner wall surface of the duct member 21 corresponding to one end of the interlocking member 53. As the drive motor 61, it is preferable to use a stepping motor capable of forward and reverse rotation and controlling the stop angle position. One end of the interlocking member 53 is provided with a slot 57 formed laterally in the longitudinal direction of the interlocking member 53.

On the other hand, the eccentric rotating body 65, the coupling hole 67 is coupled to the rotation shaft 63 of the drive motor 61, and the coupling hole 67 is predetermined eccentric with respect to the rotation shaft 63 of the drive motor 61. Has an eccentric protrusion 69 extending toward the slot 57 of the interlocking member 53. The extended eccentric protrusion 69 is accommodated in the slot of the interlocking member 53, and revolves with a predetermined eccentric radius with respect to the rotation shaft 63 according to the rotation of the rotation shaft 63 of the drive motor 61. At this time, the length of the slot 57 of the interlocking member 53 is preferably larger than the diameter of the process trajectory of the eccentric protrusion 69. Thus, when the eccentric protrusion 69 rotates up and down, the reciprocating motion of the eccentric protrusion 69 can be made in the slot of the interlocking member 53, while the interlocking member 69 is in the lateral direction of the eccentric protrusion 69. The left and right sliding reciprocating motion of 53 is made.

Accordingly, the rotational driving force of the rotation shaft 63 of the drive motor 61 is switched to the left and right sliding motion of the interlocking member 53 to rotate the cold air distribution wings 33 integrally left and right. At this time, the sliding length of the interlocking member 53 is increased or decreased in proportion to the size of the eccentric radius of the eccentric protrusion 69 with respect to the rotation axis 63 of the drive motor 61, so that within the predetermined rotation angle range In the left and right rotation of the cold air distribution wing 33 is made.

In the cold air duct, a guide member 71 for guiding the reciprocating sliding of the interlocking member 53 is fixed to the upper support portion 41. The guide member 71 has a substantially c-shape, is fixedly attached along the longitudinal direction of the support portion 41, and sliding grooves 73 are provided on opposite surfaces facing each other in the vertical direction. In the opening 75, a working protrusion 37 extending from the cold air distribution wing 33 is accommodated to move along the longitudinal direction. The actuating protrusion 37 accommodated in the opening is pivotally fitted into the protrusion receiving groove 55 of the interlocking member 53.

4 to 6 are partial cutaway perspective views of the assembled state of FIG. 3, in which the cold air distribution state by the cold air distribution device 30 according to the present invention is specifically illustrated. The drive motor 61 is driven by a control signal of a controller (not shown), and the rotational force of the drive motor 61 is transmitted to the linking member 53 through the eccentric rotating body 65 as described above. That is, the eccentric protrusion 69 of the eccentric rotation body 65 revolving about the rotation shaft 69 of the drive motor 61 is slid along the longitudinal direction in the slot of the linking member 53, at this time The interlocking member 53 reciprocates in the orthogonal direction of the slot 57. Then, the cold air distributing wing 33 hinged thereto by the reciprocating motion of the interlocking member 53 is rotated left and right at the front surface of the cold air discharge port 16.

4 illustrates a state in which each cold air distribution wing 33 is disposed in the transverse direction on the opening surface of the cold air discharge port 16, and FIGS. 5 and 6 are rotated by driving of the driving motor 61, respectively. The cold air distribution wing 33 is shown. The cold air from the cold air duct 15 is guided according to the rotation angle position of the cold air distribution vane 33 so as to be uniformly distributed and supplied into the refrigerating chamber. As a result, uniform cooling can be achieved in the refrigerating chamber.

On the other hand, in the refrigerator 1 having the cold air distribution device 30 according to the present invention, a temperature deviation may occur in the refrigerating chamber by opening and closing the door by the user. Then, the control unit receiving the temperature signal from the temperature control sensor (not shown) installed in the refrigerating chamber rotates the cold air distribution blade 33 so that the cold air can be concentrated in the region where the temperature deviation occurred in the refrigerating chamber, thereby equalizing the refrigerating chamber. One temperature distribution can be maintained.

As described above, in the refrigerator having the cold air distribution device according to the present invention, a plate-shaped cold air distribution wing is installed at the cold air discharge port to remove the vortex around the cold air discharge port, which has occurred conventionally. Thus, the cold air distribution device can operate well, thereby effectively uniformly cooling the cooling chamber, thereby keeping food fresh and safe.

Claims (9)

In the refrigerator having a cooling chamber for storing food, A cold air duct installed on one side wall of the cooling chamber to guide the flow of cold air and having a cold air discharge port opened toward the cooling chamber; A plurality of cold air distribution blades rotatably installed in the cold air discharge region by axes parallel to each other; And a rotation driving means for rotating the cold air distribution wing. The method of claim 1, And the rotation driving means rotates the cold air distribution wing within a predetermined operating range. The method of claim 1, The cold air distribution wing has a rotation shaft extending at both longitudinal ends; And a support part fixed to the cold air duct to rotatably support the pivot shaft. The method according to claim 1 or 2, The rotation drive means, A drive motor; And a rod-shaped interlocking member which is reciprocated by the drive motor and is disposed in a horizontal direction on a rotation axis of each of the cold air distribution blades and is hinged to each of the cold air distribution blades. The method of claim 4, wherein The cold air distribution wing is provided with a working projection extending laterally in the axial direction; Refrigerator, characterized in that the interlocking member is provided with a projection receiving hole for accommodating the working projection so as to swing. The method of claim 5, The linkage member has a slot formed transversely in the longitudinal direction; And an eccentric rotating body coupled to the rotating shaft of the drive motor and rotatable with the rotating shaft and having an eccentric rotating shaft accommodated in the slot with a predetermined eccentric radius with respect to the rotating shaft. The method of claim 6, The refrigerator further comprises a guide member for guiding the reciprocating motion of the interlocking member. The method of claim 1, The cold air duct, A duct cover having the cold air outlet; And a duct member coupled to the duct cover at a predetermined interval so as to form a cold air flow path therebetween. The method of claim 1, The cooling chamber is partitioned into a plurality of storage zones arranged in the upper and lower layers, wherein the cold air outlet and the cold air distribution wing is formed to correspond to each of the storage zones.