KR100218934B1 - Air distribution apparatus for a refrigerator - Google Patents

Abstract

The present invention provides a plurality of vertically distributed blades having axes parallel to each other in the horizontal direction to at least the cold air outlet opening toward the inside of the cooling chamber, and an interlocking member configured to hinge together with the vertically distributed blades to move up and down, and the interlocking member. A cold air distribution device for a refrigerator having a drive cam rotatably installed at a rear side of the refrigerator, the motor being interposed between the interlocking member and the drive cam to convert the rotational force of the drive cam into a lifting movement of the interlocking member. Wow; And a rotatable support for rotatably supporting the transmission member in the longitudinal direction of the interlocking member so that the distal end portion is accessible to the drive cam. Thereby, the up-and-down distributing wing provided in the cold air | gas outlet is operated as needed, and the cold air from a cold air duct can be distributed evenly in a refrigerating chamber. In addition, by adding the left and right distribution blades in combination with the vertical distribution blades, it is possible to maintain the inside of the cooling chamber in an effective uniform cooling state, and to selectively operate only one side if necessary, as well as intensive cooling in a specific area. You can.

Description

Cold Distributor for Refrigerator

The present invention relates to a cold air distribution device for a refrigerator, and more particularly, to a cold air distribution device for a refrigerator installed on a front surface of a cold air discharge port to intermittently operate an operation of vertically distributing blades for distributing up and down discharge cold air. It is about.

As shown in FIGS. 1 and 2, the refrigerator 1 having a cold air distribution device includes a pair of freezer compartments 2 and a refrigerator compartment 3 separated by an intermediate partition 5 in a substantially rectangular main body. Cooling chambers are provided, and opening / closing doors 6 and 7 are provided on the opening fronts of the respective cooling chambers 2 and 3, respectively. 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 having a cold air outlet port that thermally guides cold air and opens toward the front, a seal plate 25 bonded to the rear surface of the duct member 21, and a duct member. It is coupled to the front surface of the 21 is composed of a duct cover 27 is formed with a plurality of cold air outlets for guiding the cold air from the cold air outlet to discharge to the refrigerating chamber. The duct member 21 has a substantially rectangular cylindrical shape, the seal plate 25 surrounds the duct member 21 as a whole and both sides are coupled to the rear wall surface of the refrigerating chamber 3. The duct cover 27 also has a substantially rectangular cylindrical shape, the front face of which protrudes from the rear wall surface of the cooling chamber, and a predetermined cold air flow path is formed between the duct member 21.

On the other hand, the circulation duct 17 connecting the refrigerating chamber 3 and the refrigerating chamber evaporator 12b is separated from the cold air duct 15 by the duct member 21 at the rear of the cold air duct 15. The cold air blown into the cold air duct 15 by the refrigerating chamber fan 13b is guided by the cold air distribution device 111 to be supplied into the refrigerating chamber 3 through the cold air discharge port 16, and is discharged as described above. The cooled cold air is returned to the refrigerating chamber evaporator 12b through the circulation duct 17.

3 is an exploded perspective view of a conventional cold air distribution device. The conventional cold air distributing device 111 is installed in the cold air discharge port 16, the vertical distributing wing 51 which can be rotated up and down, the drive unit for rotating the upper and lower dispensing wing 51 up and down, and is disposed in the vertical direction in the cold air duct It has a left-right distribution blade 33 which rotates in conjunction with the up-down rotation of the up-down distribution blade 51. The vertically distributing blade 51 is rotatably fixed to the cold air discharge port 16 in a horizontal direction, and is provided in plurality along the vertical direction of the cold air discharge port 16.

The drive unit includes a rotation shaft 31 installed in the vertical direction on the rear side of the vertically distributed blade 51 in the cold air tuck, a drive cam 63 installed on the rotation shaft 31, and a drive motor for rotating the rotation shaft 31 ( 35) and an interlocking member 61 which is hinged to each of the vertically distributing blades 51 and lifts and lowers in interaction with the drive cam 63 in accordance with the rotation of the rotary shaft 31. Then, the rotary shaft 31 is provided coaxially along the longitudinal direction and is provided with a flat left and right wing blade 33 for guiding the cold air from the cold air duct 15 to the left and right when the rotary shaft 31 rotates. have.

The rotary shaft 31 is installed along the longitudinal direction of the cold air duct 15 on the rear side of the vertically distributing blade 51, and the driving motor 35 is coupled to the upper end thereof, and the lower end thereof is the lower side of the duct cover 41. It is rotatably fixed to the edge. The drive motor 35 is composed of a stepping motor capable of forward and reverse rotation and controlling the stop angle position. The left and right distribution blades 33 coaxially installed on the rotation shaft 31 are provided along the rotation shaft 31 so as to correspond to the cold air outlet 16 formed on the duct cover 27. Then, a driving cam 63 is provided between the lower left and right distributing wings 33c and the middle left and right distributing wings 33b. The drive cam 63 has a cam body 66 which is coaxially installed on the rotation shaft 31, and the cam body 66 is formed with a cam groove 65 having a camp profile that moves up and down along its cylindrical surface. It is.

On the other hand, the interlocking member 61 has a cylindrical shape, and is disposed in parallel with the rotation shaft 31 between the duct cover 27 and the vertically distributed blade 51. The interlocking member 61 is provided with a plurality of working rings 62 protruding from the outer circumferential surface toward the vertically distributing blade 51 along the longitudinal direction, respectively. Correspondingly, an actuating pin 55 fitted to the acting ring 62 is formed in parallel with the pivot pin 53 on the X-shaped vertically distributing wing 51. The working ring 62 of these interlocking members 61 and the working pins 55 of the upper and lower dispensing blades 51 are hinged to each other, so that the upper and lower distributing wings 51 are lifted by the interlocking member 61. Accordingly, the action pin 55 can be pivoted up and down on the shaft.

And the action part 67 extended toward the drive cam 63 is provided in the outer peripheral surface of the vertically distributed blade 51 corresponding to the drive cam 63. As shown in FIG. The acting portion 67 is an actuating protrusion extending from the outer circumferential surface of the horizontal wing interlocking member 61 toward the cam body 66, and the actuating protrusion is engaged with the cam groove 65 of the cam body 66. When the rotating shaft 31 is rotated, the working protrusion is moved along the cam groove 65 of the cam body 66, the vertically distributed wings 51 hinged by the lifting and lowering of the horizontal wing linkage member 61 accordingly. ) Will rotate up and down.

In the cold air distribution device 111 having such a configuration, when the rotating shaft 31 rotates, the coaxially formed left and right distribution blades 33 rotate integrally, and at the same time, the interlocking member 61 interacts with the drive cam 63. By acting and raising and lowering, the vertically distributing blade 51 rotates within a predetermined range. Thus, the cold air flowing through the cold air duct 15 is guided by the combined operation of the left and right distribution blades 33 and the vertical distribution blades 51 and evenly distributed in the refrigerating chamber in the left and right directions. As a result, a uniform temperature distribution can be maintained in the refrigerating chamber.

By the way, in the conventional cold air distribution device 111 for refrigerators, there is an advantage that an effective uniform cooling in the refrigerating chamber can be achieved by the combined operation of the upper and lower distribution blades 51 and the left and right distribution wings 33, When only one can achieve sufficient uniform cooling in the refrigerating chamber, that is, even when the temperature is relatively low, such as winter, power consumption is high because the upper and lower and left and right distribution wings 51 and 33 must be used in combination. In addition, if the vertically and horizontally distributing wings can be selectively operated, it can be universally used for various models, thereby improving the efficiency of the product.

Accordingly, an object of the present invention is to provide a cold air distribution device for a refrigerator that can be intermittently operated in consideration of these problems in the related art.

Another object of the present invention, by further combining the left and right distribution wings to operate in combination with the upper and lower distribution wings, to keep the inside of the cooling chamber in an effective uniform cooling state, and to selectively operate only one side, if necessary, of course, It is to provide a cold air distribution device for a refrigerator so that the centralized cooling in the area.

1 is a front view of a refrigerator having a cold air distribution device,

2 is a side cross-sectional view of FIG.

3 is an exploded perspective view of a conventional cold air distribution device,

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

5 is an assembled rear perspective view of FIG. 4;

Figure 6 is a cross-sectional view of Figure 5, showing the operating state of the transmission member,

7 and 8 are side cross-sectional views of FIG. 5 showing a state in which the cold air distribution device according to the present invention operates in a state where the transmission member can interact with the drive cam.

* Explanation of symbols for main parts of the drawings

2, 3: Cooling chamber 5: Intermediate bulkhead

6, 7: door 9a, 9b: temperature sensor

12a, 12b: Evaporator 13a, 13b: Cooling chamber fan

15: cold air duct 16a, 16b, 16c: cold air discharge

21: duct member 27: duct cover

30: cold air distribution device 31: rotating shaft

33a, 33b, 33c: left and right distribution wings 35: drive motor

51: up and down distribution wings 53, 85: rotating pin

55: action pin 61: interlocking member

62: action ring 63: elevating drive cam

65: cam groove 71: transmission member

73: receiving portion 75: action protrusion

81: rotation support 83: incision groove

87: stop

The above object is, according to the present invention, at least a plurality of vertical distribution wings having an axis parallel to each other in the horizontal direction to the cold air outlet opening toward the interior of the cooling chamber, and the interlocking movement by integrally rotating by hinged and lifting the vertical distribution wings. A cold air distribution device for a refrigerator having a member and a drive cam rotatably installed at a rear side of the interlocking member, wherein the rotating force of the drive cam is interposed between the interlocking member and the drive cam to raise and lower the movement of the interlocking member. A transmission member for switching to; It is achieved by a cold air distribution device for a refrigerator, characterized in that it comprises a rotation support for supporting the transmission member in the longitudinal direction of the interlocking member to be rotated, so that the distal end is accessible to the drive cam.

Here, the rotation support portion, the receiving projection protruding toward the driving cam from the outer diameter surface of the interlocking member, the receiving projection having a distal gap in the horizontal direction at the distal end; An insertion portion formed at one end of the transmission member so as to be received between the cutting gaps of the accommodation protrusion; It can be configured simply by including a rotation pin penetrates the receiving protrusion and the insertion unit integrally to form a rotation shaft of the transmission member.

In addition, the stopper may be configured to further include a stopper for stopping and holding the transferred member rotated with respect to the drive cam. In this case, the stopper may receive the interlocking member from a rear surface of the duct cover in which the cold air outlet is formed. A stop plate extended in parallel with the projection; The stop plate may be configured to form a receiving groove for receiving the rotating member in the pivoted state.

On the other hand, the drive cam, the cam body of the cylindrical shape; The cam body may be configured to include a cam groove having a camping profile which is continuously lifted up and down the circumferential surface of the cam body and engaged with the distal end when the transmission member approaches.

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

Figure 4 is an exploded perspective view of the cold air distribution device according to the present invention, Figure 5 is an assembled rear perspective view of FIG. The cold air distribution device 30 for the refrigerator is provided in the cold air duct of the refrigerator 1 having the same configuration as that described with reference to FIGS. 1 and 2. Therefore, the refrigerator 1 in which the present cold air distribution device 30 is installed will be replaced with the detailed description of the prior art, and the present cold air distribution device 30 having different configurations and effects will be described. At this time, the same reference numerals are used for the same configurations and the same names as before.

Cold air distribution device 30 according to the present invention, as described in connection with Figure 3 of the prior art, in the vertical direction to the rear of the duct cover 27 formed with three cold air discharge ports 16a, 16b, 16c along the vertical direction It is installed. Each of the cold air discharge ports 16a, 16b, and 16c is provided with three vertically distributing blades 51. The upper and lower distribution blades 51 have arcuate forward projections 57 and rear cutouts 59 corresponding to the cold air discharge ports 16a, 16b, and 16c, and pivot pins 53 extending laterally from both ends, respectively. Is installed. On the other hand, the duct cover 27 having the cold air discharge ports 16a, 16b, and 16c is provided with flange portions 45 extending in the orthogonal direction from the rear surface at both longitudinal longitudinal edges thereof, and are rotated on these flange portions 45. The rotation hole 47 which accommodates the pin 53 is provided mutually opposing. The up-and-down distributing blade 51 in which the two rotation pins 53 are accommodated in the opposing rotation hole 47, respectively, can be rotated up and down in front of the cold air discharge ports 16a, 16b, and 16c.

At the rear of the vertically distributing blade 51, these vertically distributing blades 51 are vertically disposed in a drive unit and a cold air duct that are integrally rotated up and down within a predetermined range, and interlocked with the vertically displaced blades of the vertically distributing blade 51. It has rotating left and right distribution wings 33a, 33b, 33c. The drive unit includes a rotation shaft 31 installed in the vertical direction on the rear side of the vertically distributed blade 51 in the cold air tuck, a drive cam 63 installed on the rotation shaft 31, and a drive motor for rotating the rotation shaft 31 ( 35), the interlocking member 61 hinged to each of the up and down distributing wings 51, and horizontally disposed in the axial direction of the interlocking member 61 to rotate the driving force of the drive cam 63 of the interlocking member 61; It has the transmission member 71 which switches to a lifting motion.

The interlocking member 61 has a cylindrical shape, and is disposed to be capable of lifting in a vertical direction between the duct cover 27 and the vertically distributing blade 51. On the outer diameter surface of the interlocking member 61, the working ring 62 which protrudes by carrying out each vertical distribution blade 51 protrudes at predetermined intervals along an axial direction. Correspondingly, in the rear cutout portion 59 of the X-shaped vertically distributing blade 51, an action pin 55 fitted to the action ring 62 is formed in parallel with the rotation pin 53. The working ring 62 of these interlocking members 61 and the working pins 55 of the vertically distributing blade 51 are hinged to each other, so that the vertically distributing blade 51 is lifted by the interlocking member 61. The working pin 55 can be pivoted up and down on the axis.

On the other hand, the rotating shaft 31 is installed in parallel with the interlocking member 61 on the rear side of the upper and lower distribution wings 51, the driving motor 35 is coupled to the upper end, the lower end of the lower side of the duct cover 27 The flange 28 is rotatably fixed. The drive motor 35 is housed in a motor case (not shown) 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 rotary shaft 31 is also provided coaxially along its longitudinal direction and has a flat left and right distribution blades 33a, 33b, 33c for guiding the cold air from the cold air duct 15 to the left and right when the rotary shaft 31 rotates. Is installed.

The left and right distribution wings 33a, 33b, 33c are provided in three along the rotation shaft 31 so as to correspond to the cold air discharge ports 16 formed in the duct cover 40. Then, a driving cam 63 is provided between the lower left and right distributing wings 33c and the middle left and right distributing wings 33b. The drive cam 63 has a cam body 66 which is coaxially installed on the rotation shaft 31, and the cam body 66 is formed with a cam groove 65 having a camp profile that moves up and down along its cylindrical surface. It is.

In addition, the transmission member 71 is interposed between the interlocking member 61 and the drive cam 63. The transmission member 71 has a substantially rectangular bar shape, and has a rectangular plate-shaped insertion portion 73 provided at one end and a cylindrical working protrusion 75 protruding from the other end. On the other hand, the interlocking member 61 is formed with a rotation support portion 81 for supporting one end of the transmission member 71 to be able to rotate left and right. The pivot support portion 81 extends toward the driving cam 63 and has a receiving protrusion in which a horizontal cutting groove 83 is formed at the distal end, and inserts the transmission member 71 between the cutting grooves 83. The part 73 is accommodated. Then, it is rotatably supported by the downward pivot pin 85 from the upper side. The other end of the rotating member 71 to be rotated is approached to the cam groove 65 of the drive cam 63, at this time, to limit the excessive rotation of the transmission member 71 engaged with the cam groove 65. In order to close one side of the incision groove (83). In the cutting groove 83, it is also preferable to provide a locking step for preventing the removal of the transmission member in the closed opposite side opening.

On one side of the transmission member 71, a stop portion 87 protruding and extending in parallel with the transmission member 71 from the rear surface of the duct cover 27 is formed. The stop portion 87 has a rectangular plate shape, and is formed with a receiving groove 89 for receiving and supporting the other end, that is, the actuating protrusion 75, during the rotation of the transmission member 71. As for the transmission member 71 which rotates the rotation pin 85 to the shaft, the other end part engages with the cam groove 65 of the drive cam 63, or accommodates the stop part 87 by simple operation of a manufacturer or a user. It is received in the groove (89).

6 is a cross sectional view of FIG. 5, and FIGS. 7 and 8 are side cross-sectional views of FIG. 5. As can be seen from these figures, in the cold air distribution device 30 for the refrigerator, the transmission member 71 is rotated about the pivot pin 85 with the shaft to mutually interact with the cam groove portion 65 of the drive cam 63. It may be engaged or supported by the receiving groove 89 of the stop 87. Operation of such a transmission member 71 is shown in detail in FIG. When the transmission member 71 is engaged with the cam groove portion 65 of the drive cam 63, the left and right distributing blades 33a, 33b, 33c rotate in accordance with the rotation of the rotation shaft 31, and accordingly the rotational force is It is transmitted to the interlocking member 61 through the transmission member 71. At this time, the interlocking member 61 is raised and lowered integrally with the transmission member 71 which moves up and down along the cam groove 65 of the drive cam 63, and the vertically distributing wing 51 is rotated up and down within a predetermined range. Let's do it.

At this time, the cold air from the cold air duct 15 is distributed in the left and right directions by the left and right distribution wings 33a, 33b, 33c, and is distributed in the vertical direction by the vertically distributing blade 51 that operates in combination therewith. . The operating state of the upper and lower and left and right distribution wings 51, 33a, 33b, 33c can be seen in detail through FIGS. As a result, the inside of the refrigerating chamber can maintain a uniform cooling state. On the other hand, when a temperature deviation occurs in the refrigerating chamber, a control unit (not shown) that has applied a temperature signal from the temperature sensors 9a and 9b outputs a control signal to the drive motor 35, thereby distributing the upper and lower wing 51. And the left and right distributing blades 33a, 33b, 33c are rotated to face the region having a low temperature. Then, cold air from the cold air duct 15 is intensively discharged toward the corresponding area, so that the temperature deviation can be quickly removed.

Then, when the rotating member 71 is rotated and the working protrusion 75 is accommodated in the receiving groove 89 of the stop portion 87, the rotating shaft 31 itself rotates and the left and right distribution blades 33a, 33b, Only 33c) turns left and right. At this time, the cold air from the cold air duct 15 is distributed in the left and right directions only by the left and right distribution vanes 33a, 33b, 33c.

As described above, according to the present invention, there is provided a cold air distribution device for a refrigerator that can operate the vertically distributing blades provided at the cold air discharge port as necessary to distribute cold air from the cold air duct in the vertical direction. In addition, by adding the left and right distribution blades in combination with the vertical distribution wings, it is possible to keep the inside of the cooling chamber in an effective uniform cooling state, and to selectively operate only one side if necessary, as well as to concentrate on a specific area. Can be cooled.

Claims (5)

A plurality of up-and-down distributing wings having axes parallel to each other in a horizontal direction to at least the cold air discharge openings opened toward the cooling chamber, and an interlocking member pivotally coupled with the upper and lower dispensing wings to move up and down, and behind the interlocking member. In the cold air distribution device for a refrigerator having a drive cam rotatably installed, A transmission member interposed between the interlocking member and the drive cam to convert the rotational force of the drive cam into a lifting movement of the interlocking member; And a rotation support part supporting the transmission member in a longitudinal direction of the interlocking member so as to be transversely rotatable so that an end portion thereof is accessible to the drive cam. The method of claim 1, The rotation support portion, A receiving protrusion projecting toward the driving cam from an outer diameter surface of the interlocking member and having a cutout in a horizontal direction at an end thereof; An insertion part formed at one end of the transmission member so as to be received between the cutting grooves of the accommodation protrusion; And a rotation pin penetrating the receiving protrusion and the insertion unit integrally to form a rotation shaft of the transmission member. The method of claim 1, Refrigerating air distribution device for a refrigerator, characterized in that it further comprises a stop for holding the transmission member rotated relative to the drive cam. The method of claim 3, The stop portion is a stop plate protruding in parallel with the receiving projection of the interlocking member from the rear surface of the duct cover in which the cold air discharge port is formed; The stopper plate is a cold air distribution apparatus for a refrigerator, characterized in that the receiving groove is formed for receiving the rotating member in the rotation state. The method according to claim 1 or 3, The drive cam, A cylindrical cam body; And a cam groove having a camping profile which is continuously lifted up and down the circumferential surface of the cam body, and interlocks with the distal end when the transmission member approaches.

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