KR100208344B1 - Refrigerator with cooling air dispenser - Google Patents

Abstract

The present invention relates to a refrigerator having a cooling chamber for cooling and 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 discharge opening opened toward the cooling chamber; A plurality of horizontal distribution blades rotatably disposed in parallel with a horizontal axis of rotation on the front surface of the cold air discharge port; An interlocking member for integrally rotating the horizontal distribution blades; A drive cam rotatably disposed at the rear side of each of the horizontal distribution blades; A drive motor for rotating the drive cam in a forward and reverse direction; It is rotatably interposed between the drive cam and the interlocking member, one end is hinged to the interlocking member, the other end includes an action lever for lifting the interlocking member to interact with the lifting drive cam. As a result, more uniform cold distribution in the refrigerating compartment can be achieved by the cold air distributing vane which is rotated up and down in combination with the left and right rotations of the cold air distributing blade, while effectively intensively cooling the local specific region in the refrigerating compartment.

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 that enables uniform cold air distribution in a cooling chamber by a combined operation of cold air distribution blades and horizontal distribution blades.

A refrigerator having a conventional cold distribution device is proposed in PCT application WO 95/27278 by the applicant of the present invention, and FIGS. 8 to 10 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, since the structure of the cold air distribution device 111 is complicated and difficult to manufacture, there is a problem that the manufacturing cost increases. In the conventional cold air distribution device 110, vortices may be formed around the cold air discharge port 16 by cold air flowing along the wings 117 and 119 having a gentle S-shaped cross section. May act as a load on the smooth operation of the cold air distribution device 110 and thus may not achieve uniform cold air distribution in the cooling chamber.

Conventional cold air distribution device 110, but also can achieve a horizontal uniform distribution of cold air, there is a disadvantage that the cold air is not uniformly distributed in the vertical direction. Therefore, there is a limit to the realization of uniform cooling of the entire refrigerating chamber 23.

Accordingly, an object of the present invention is to provide a cold air distribution device that can be manufactured inexpensively, in which the vortices are eliminated and work well in consideration of these problems in the related art, and through a combined cold air distribution in the horizontal and vertical directions. It is to provide a refrigerator having a cold air distribution device capable of performing uniform cooling and effective concentrated cooling.

1 is a front sectional view of a refrigerator equipped with 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 cross-sectional view of the assembled state of FIG.

5 to 7 is a partially enlarged view of Figure 2, showing a cold air distribution state by the cold air distribution device according to the present invention,

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

9 is a partially enlarged side cross-sectional view of FIG. 8;

10 is an exploded 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 30, 50: cold air distribution device

31: rotation axis 33a, 33b, 33c: cold air distribution wing

35: drive motor 40: cold air grill member

45: flange 51: horizontal distribution wing

53: rotating pin 55: working pin

57: protrusion 59: cutout

60 drive unit 61 interlocking member

62: working ring 63: drive cam

66: cam projection 70: lifting guide

81: working lever 75: working shaft

According to the present invention, in the refrigerator having a cooling chamber for cooling and storing food, the air is provided 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. Ducts; A plurality of horizontal distribution blades rotatably disposed in parallel with a horizontal axis of rotation on the front surface of the cold air discharge port; An interlocking member for integrally rotating the horizontal distribution blades; A drive cam rotatably disposed at the rear side of each of the horizontal distribution blades; A drive motor for rotationally driving the drive cam in a forward and reverse direction: rotatably interposed between the drive cam and the interlocking member, one end of which is hinged to the interlocking member, and the other end of the drive cam to interact with the lifting drive cam; It is achieved by a refrigerator, characterized in that it comprises an action lever for elevating the interlocking member.

Here, it is preferable that the actuating lever is rotatably supported by an actuating shaft fixed in a horizontal direction between the drive cam and the interlocking member.

The drive cam has a cam protrusion having a cam body which is enlarged in the radial direction in the cross section of the rotary shaft, and a cam profile which is moved up and down along the cylindrical surface of the cam body; The elevating guide member can be simply configured to have an action groove engaged with the cam protrusion.

On the other hand, the cooling chamber is partitioned into a plurality of storage zones arranged in the upper and lower layers, the cold air discharge port is formed corresponding to each of the storage zones; The horizontal distribution blade is preferably configured to be attached to each cold air discharge port.

The rotation shaft may be provided with at least one plate-shaped cold air distribution wing along the axial direction, and the at least one cold air distribution wing may be provided to correspond to the cold air discharge port.

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

1 is a front sectional view of a refrigerator having a cold air distribution device according to the present invention, and FIG. 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. 8 to 10 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.

A cold air duct 15 is formed in the rear wall surface of the refrigerating chamber 3, and the cold air duct 15 is formed with a cold air discharge port 16 opened toward the refrigerating chamber 3. The cold air duct 15 is provided in the cold air duct 15, and the cold air blown into the cold air duct 15 by the refrigerator compartment fan 13b is supplied into the cold compartment 3 through the cold air distribution device 30. . 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 the cold air distribution device according to the present invention, Figure 4 is a cross-sectional view of the assembled state of FIG. The cold air distributing device 30 includes a horizontal distributing blade 51 which is provided adjacent to the cold air discharging opening 16 in the cold air duct, and which can be rotated up and down, a drive unit which rotates the horizontal distributing blade 51 up and down, and a cold air duct. It has a cold air | distribution blade 33 arrange | positioned in the vertical direction inside, and rotates in conjunction with the up-and-down rotation of the horizontal distribution blade 51. As shown in FIG. The horizontal distribution blades 51 are rotatably fixed to the cold air outlet 16 in a horizontal direction, and are provided in plural along the vertical direction of the cold air outlet 16.

The horizontal distribution blade 51 has a front projection 57 and a back cutout 59 corresponding to the cold air discharge port 16, and has a substantially curved shape in which the attachment of the projection 57 is cut off. And rotation pins 53 extending laterally from the both end parts are provided. On the other hand, the cold air grill member 40 having the cold air discharge port 16 is provided with flange portions 45 extending in the orthogonal direction from the rear surface at both longitudinal longitudinal edges thereof, and the rotation pins 53 are provided on these flange portions 45. The rotating hole 47 which accommodates) is provided mutually. The horizontal distribution blades 51 in which the two rotation pins 53 are respectively accommodated in the opposing rotation holes 47 are able to rotate up and down on the front surface of the cold air discharge port 16. In the present embodiment, three horizontal distribution blades 51 having such a configuration are provided along the vertical direction of each cold air discharge port 16.

The drive unit 60 includes a rotation shaft 31 installed vertically on the rear side of the horizontal distribution blade 51 in the cold air duct, a drive cam 63 and the horizontal distribution blade 51 provided on the rotation shaft 31. An interlocking member 61 which rotates integrally, and an actuating lever installed rotatably between the interlocking member 61 and the drive cam 63 to operate the interlocking member 61 according to the rotation of the drive cam 63. 81). The rotary shaft 31 is rotatable in the forward and reverse directions by the drive motor 35 coupled to the upper end.

The rotary shaft 31 is provided along the longitudinal direction of the cold air duct 15 on the rear surface side of the horizontal distribution blade 51, and the plate-shaped cold air distribution blade 33 is provided along the longitudinal direction. The cold air distribution blades 33 are coaxially installed on the rotation shaft 31 and three are provided corresponding to the cold air discharge ports 16 formed in the cold air grill member 40. A drive cam 63 is provided between the lower cold air distribution blade 33c and the intermediate cold air distribution blade 33b. The drive cam 63 has a cam main body 65 which is coaxially installed on the rotation shaft 31, and the cam main body 65 is formed with a cam protrusion 66 having a camping profile which moves up and down along the cylindrical surface. It is.

The rotary shaft 31 having the driving motor 35 coupled to the upper end thereof is rotatably fixed to the lower edge of the cold air grill member 41. The drive motor 35 is housed in the motor case 27 at the top of the front plate 23 and installed. Such drive motor 35, it is preferable to use a stepping motor capable of forward and reverse rotation and control the stop angle position.

The interlocking member 61 has a cylindrical shape and is disposed in parallel with the rotational shaft 31 between the cold air grill member 40 and the horizontal distribution blade 51. The interlocking member 61 is provided with a plurality of working rings 62 protruding from the outer circumferential surface toward the horizontal distributing blade 51 along the longitudinal direction, respectively. Correspondingly, in the protruding portion 57 of the X-shaped horizontal distribution blade 51, an action pin 55 fitted to the action ring 62 is formed parallel to the rotation pin 53. The working ring 62 of the interlocking member 61 and the working pin 55 of the horizontal distributing wing 51 are hinged to each other, and thus the horizontal distributing wing 51 is moved up and down by the interlocking member 61. Accordingly, the action pin 55 can be pivoted up and down on the shaft.

On the other hand, one end of the actuating lever 81 is provided with a hinge engaging portion 83 which is hinged to the interlocking member 61, and the other end of the actuating groove portion engaging with the cam projection 66 of the drive cam 63 ( 85). This actuating lever 81 is rotatably supported by an actuating shaft 75 which horizontally connects a pair of opposing flange portions 45 fixed to the cold air grill member 40. In the central region of the working shaft 75, a pair of opposing locking jaws 77 for preventing the left and right flow of the rotatably supported working lever 81 are provided at predetermined intervals. Accordingly, when the driving cam 63 is rotated by the forward and reverse rotation of the driving motor 35, the working groove 85 of the actuating lever 81 is engaged with the cam protrusion 66 of the driving cam 63 to raise or lower. At this time, the actuating lever 81 rotates about the actuating shaft 75 and the hinge coupling portion 83 moves to the opposite side to the actuating groove 85. Then, at the same time, the interlocking member 61 also moves in the same direction with the hinge coupler 83, whereby the horizontal distribution blades 51 installed on the front surface of the cold air discharge port 16 are rotated integrally.

The through hole 87 of the actuating lever 81 is provided with a predetermined eccentricity from the center to the actuation groove side. The reason for this is to make the vertical rotation angle of the hinge coupling part larger with respect to the vertical rotation angle of the working groove side, and the more the through hole 87 is formed closer to the working groove side, the vertical rotation angle of the hinge coupling part is proportionally increased. This becomes even bigger. By properly adjusting the position of the through-hole 87 in this way, it is possible to maximize the vertical rotation of the horizontal distribution blade 51 for the small rotational torque of the working groove side.

The cold air distribution device 30 further has a lifting guide 70 for guiding the lifting and lowering of the horizontal wing interlocking member 61 and preventing its own rotation. The elevating guide portion 70 is provided with a plate-shaped guide piece 69 extending from the outer circumferential surface toward the cold air grill member 40 along the axis line of the horizontal wing interlocking member 61, and the guide piece 69 can be lifted and lowered. The guide portion 49 is formed on the rear surface of the cold air grill member 40 to be inserted. The guide part 49 is a pair of plate-shaped objects facing each other, and the guide piece 69 is inserted between them.

With this configuration, FIGS. 5 to 7 are partially enlarged views of FIG. 2, in which the vertical cold air distribution state by the cold air distribution device 30 according to the present invention is specifically illustrated. The cold air distribution device 30 is driven by a stepping motor 35 which is operated and controlled in accordance with an output signal from a controller (not shown). When the rotating shaft 31 is rotated by the forward and reverse driving of the stepping motor 35, the cold air distributing blade 33 and the driving cam 63 installed along the rotating axis rotate integrally. At this time, the cam protrusion 66 formed on the cylindrical surface of the drive cam 63 is raised or lowered along the axial direction by the rotation of the drive cam 63. Then, one end is engaged with the cam projection 66_, the other end is hinged to the linkage member 61, the working lever 81 is rotated to lower or raise the linkage member 61, accordingly the horizontal distribution wing ( 51) is lowered or lowered.

As described above, according to the present invention, since the vertical rotation of the horizontal distribution blade 51 and the horizontal rotation of the cold air distribution wing 33 are performed in combination with the forward and reverse rotation of the drive motor 35, the cold air is effectively distributed in the refrigerating chamber. It is possible to achieve uniform cooling. 6 and 7 show an up-distribution state and a down-distribution state of cold air, respectively. The cold air distribution is continuously performed by forward and reverse rotation of the driving motor under the control of a control unit (not shown).

On the other hand, a temperature sensing sensor is provided in several places in the refrigerator compartment. In the combined cold air distribution process in the horizontal and vertical directions by the cold air distributing wing 33 and the horizontal distributing wing 51, the controller determines whether the centralized cooling is performed through an output signal from the temperature sensing sensor. Therefore, when intensive cooling is required, the controller outputs a control signal to the drive motor 35 to stop the cold air distribution blade 33 and the horizontal distribution blade 51 so that the cool air intensively discharged in the corresponding area. . At this time, in the cold air distribution device 30 according to the present invention, since the left and right rotation of the cold air distribution blade 33 and the vertical rotation of the horizontal distribution blade 51 can be combined in combination with this, it is local in the refrigerating chamber. Phosphorus specific regions can also be effectively concentrated cooling.

In the above-described and illustrated embodiments, for ease of explanation, the cold air distribution device 30 is described in the refrigerating chamber 3, but the same cold air distribution device 30 is provided in the freezing chamber 2 as well. Of course, the same purpose as described above can be achieved.

As described above, the refrigerator having a cold air distribution device according to the present invention is provided with a cold air distribution device having a relatively simple configuration, and can be manufactured at low cost. Can be distributed. The cold air distribution blade which rotates up and down in combination with the left and right rotation of the cold air distribution blade can achieve more uniform cold air distribution in the refrigerating chamber, and can effectively cool the local specific area in the refrigerating compartment. The effect is provided.

Claims (6)

In the refrigerator having a cooling chamber for cooling and 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 horizontal distribution blades rotatably disposed in parallel with a horizontal axis of rotation on the front surface of the cold air discharge port; An interlocking member for integrally rotating the horizontal distribution blades; A drive cam rotatably disposed at the rear side of each of the horizontal distribution blades; A drive motor for rotating the drive cam in a forward and reverse direction; It is rotatably interposed between the drive cam and the interlocking member, one end is hinged to the interlocking member, the other end comprises an action lever for lifting the interlocking member by interacting with the elevating drive cam Refrigerator. The method of claim 1, The actuating lever is a refrigerator, characterized in that supported by the operating shaft fixed in the horizontal direction between the drive cam and the interlocking member rotatable. The method of claim 2, The drive cam has a cam body having a cam body which is enlarged in the radial direction in the cross section of the rotary shaft, and a cam protrusion which is moved up and down along the cylindrical surface of the cam body; The lifting guide member, the refrigerator characterized in that the groove formed to engage the cam projection. The method of claim 1, The cooling chamber is partitioned into a plurality of storage zones arranged in upper and lower layers, and the cold air outlet is formed corresponding to each of the storage zones; And said horizontal distribution vane is attached to each cold air outlet. The method of claim 1, Refrigerator, characterized in that at least one plate-shaped cold air distribution wing is installed in the axis of rotation. The method of claim 5, The at least one cold air distribution wing is characterized in that it is provided to correspond to the cold air outlet.

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