KR19990010468A - Refrigerator with cold air distributor - Google Patents

Abstract

The present invention relates to a refrigerator having a cooling chamber for cooling and storing food, comprising: a duct installed on one sidewall of the cooling chamber to guide the flow of cold air and having a discharge port opened toward the cooling chamber; At least one plate-shaped cold air distribution wing that is reciprocally rotatable within a predetermined angle range in the tuck adjacent to the discharge port; And a driving means for reciprocating the cold air distribution wing. As a result, it is possible to provide a cold air distribution device having a relatively simple configuration, thereby reducing the manufacturing cost and realizing uniform cold air distribution in the refrigerating chamber. And at least one horizontal distributing wing installed at the cold air outlet so as to be rotatable vertically; Further comprising a horizontal distribution blade driving means for vertical rotation of the horizontal distribution blade, to achieve uniform cold air distribution and effective centralized cooling in the vertical and horizontal directions according to the combined vertical and horizontal rotation of the cold air distribution wing and the horizontal distribution blade can do.

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 capable of performing uniform cooling in a refrigerating chamber.

A refrigerator having a cold air distribution device is proposed in PCT application WO 95/27278 by the applicant of the present invention, and FIGS. 11 to 13 show a refrigerator having such a conventional cold air 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, 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, and the vortices are cold air distribution. It can act as a load on the smooth operation of the device 110 and fail to achieve uniform cold 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, in consideration of these problems in the prior art, can reduce the manufacturing cost with a relatively simple configuration, having a cold air distribution wing to realize the combined cold air distribution and concentrated cooling in the vertical and horizontal directions 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;

Figure 4 is a rear perspective view of the combined state of Figure 3,

5 to 7 is a cross-sectional view showing an operating state of the cold air distribution device according to the present invention,

8 to 10 is a partially enlarged side cross-sectional view of Figure 2, showing a cold air distribution state by the cold air distribution device of the present invention,

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

12 is a partially enlarged view of FIG. 10;

13 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 20: duct housing

21: duct member 30: cold air distribution device

31: rotating shaft 33: cold air distribution wing

35: drive motor 37: guide part

39: guide groove 40: cold air grill member

51: horizontal distribution wing 53: rotating pin

55: working pin 57: protrusion

59: cutting portion 60: horizontal distribution wing drive portion

61: horizontal wing interlocking member 62: working ring

63: lifting drive cam 66: cam groove

67: action part 80: eccentric action part

81: action projection

According to the present invention, there is provided a refrigerator having a cooling chamber for cooling and storing food, comprising: a duct provided on one sidewall of the cooling chamber to guide the flow of cold air and having a discharge port opened toward the cooling chamber; ; At least one plate-shaped cold air distribution wing that is reciprocally rotatable within a predetermined angle range in the tuck adjacent to the discharge port; And a driving means for reciprocating the cold air distribution wing.

Here, the drive means, the drive motor; A guide portion formed at one end of the cold air distribution wing over a predetermined length section; It can be easily configured to include an eccentric action portion which is engaged with the guide portion and reciprocating over the guide length section, and is eccentrically rotated by the drive motor by being eccentric a predetermined distance from the rotation axis of the drive motor. At this time, the guide portion has a guide groove; The eccentric action portion is configured to be slidably guided in the guide groove, and the rotation axis of the cold air distribution blade is preferably provided along the longitudinal direction of the cold air distribution blade downstream of the cold air flow direction.

The cooling chamber is partitioned into a plurality of storage zones arranged in an upper and lower layers, and the discharge port is formed corresponding to each of the storage zones; The cold air distribution wing may be configured to be attached at least one for each discharge port.

On the other hand, at least one horizontal distribution blade that is installed to be rotated up and down in the cold air discharge port; By further comprising a horizontal distribution blade drive means for the vertical rotation of the horizontal distribution blade, it is possible to achieve a uniform cold distribution in the horizontal and vertical direction.

Here, the horizontal distribution wing drive means, preferably comprises a horizontal wing interlocking member hinged to the horizontal distribution wing, the horizontal distribution wing drive means, the lifting drive cam is installed on the rotary shaft of the cold air distribution blades; ; It is formed on the horizontal wing interlocking member to interact with the elevating drive cam, it can be configured to include an operation unit for elevating the interlocking member when rotating on the elevating drive cam.

At this time, the elevating drive cam has a cam groove having a cam body coaxially installed on the axis of rotation of the vertical distributing blade, and a camp profile that is elevated along the cylindrical surface of the cam body; The acting portion can simply be configured with a actuating protrusion engaged with the cam groove.

On the other hand, it can be configured to further include a guide means for guiding the interlocking member to be prevented from rotating about the longitudinal axis, wherein the guide means, horizontally in the axial direction along the axis of the interlocking member A protruding plate-shaped guide piece; It is preferable to simply comprise a guide portion formed in the duct and inserted into the guide piece so as to be liftable.

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 drawings, the refrigerator 1 having the present cold air distribution wing is, as described with reference to Figs. 11 to 13, in the freezer compartment 2 by an 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.

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. As illustrated in FIG. 8, the duct housing 20 includes a duct member 21 for forming cold air ducts 15 to thermally guide cold air and a front plate attached to the front surface of the duct member 21. (23), a seal plate (25) bonded to the rear surface of the duct member (21), and a partial cylindrical cold air grill member provided in a form surrounding the cold air distribution device (30) in front of the front plate (23). It consists of 40.

The cold air discharge openings 16 which are opened toward the refrigerating chamber 3 are provided in the cold air grill member 40 at predetermined intervals along the longitudinal direction. The cold air grill member 40 is provided in the receiving portion of the front plate (23). The front plate 23 is provided to have a substantially same plane as the inner wall surface of the refrigerating chamber 3, and the cold air grill member 40 protrudes from the front plate 23 into the refrigerating chamber 3 inside. Accordingly, the cold air grill member 40 and the cold air distributor 30 slightly protrude from the rear wall of the refrigerating compartment 3 as a whole, and the cold air guided by the cold air distributor 30 is stored in the refrigerating compartment 3 at a large discharge angle range. ) Is distributed within.

The cold air distribution device 30 is rotatably supported by the front plate 23. The front plate 23 and the duct member 21 form a cold air duct 15 for guiding the flow of cold air therebetween, and has an unillustrated portion for accommodating a portion of the cold air distribution device 30. The cold air distribution device 30 is provided in the cold air duct 15. The cold air distribution device 30 which will be described in detail below supplies the cold air blown into the cold air duct 15 by the cold room fan 13b into the cold storage room 3. The rear side of the cold air duct 15 is provided in the circulation duct 17 isolated by the duct member 21. The circulation duct 17 connects the refrigerating chamber 3 and the refrigerating chamber evaporator 12b. Thus, the cold air that has cooled the refrigerating chamber 3 returns to the refrigerating chamber evaporator 12b through the recirculating duct 17.

On the other hand, Figure 3 is an exploded perspective view of the cold air distribution device according to the present invention, Figure 4 is a rear perspective view of the coupled state of FIG. As can be seen from these figures, the cold air distribution device 30 is provided in the cold air duct adjacent to the cold air discharge port 16 and distributes cold air uniformly in the horizontal direction in the cold air duct 15. The wing | blade 33a, 33b, 33c, the drive part which rotates these cold air | distribution wings 33a, 33b, 33c left and right, and the vertical part which distributes cold air uniformly to a vertical direction are comprised.

As can be seen from this embodiment, the cold air distribution blades 33a, 33b, 33c of the plate-shaped body are provided in three corresponding to three cold air discharge ports 16, respectively, and the longitudinal direction of the cold air duct 15 is provided. Along the vertical direction. These vertical air distribution blades (33a, 33b, 33c) is provided with a rotation shaft 31 along one longitudinal longitudinal edge of the two edges, the upper end of the rotation shaft 31 is coupled to the drive motor 35 The lower end is rotatably fixed to the lower edge of the cold air grill member 40, respectively. Thereby, the cold air | distribution vanes 33a, 33b, 33c can be rotated in the front surface of the cold air | gas discharge port 16 about the rotating shaft 31 as an axis.

The drive unit for rotating the cold air distribution blades 33a, 33b, 33c includes a drive motor 35 coupled to the rotation shaft 31 on the upper side of the cold air distribution blade 33 and an upper end of the upper cold distribution blade 33a. The guide portion 37 and the eccentric action portion 80 coupled to the rotary shaft 36 of the drive motor 35 and acting on the guide portion 37 by the rotation of the rotary shaft 36 is configured. The eccentric action part 80 is constituted by action protrusions 81 which are eccentric with respect to the rotation axis 36 and are bent downwardly so as to be engaged with the guide part 37. The drive motor 35 is accommodated in the motor case 27 at the upper portion of the front plate 23 and installed, and it is preferable to use a stepping motor capable of forward and reverse rotation and controlling the stopping angle position. On both sides of the drive motor 35, lamps for refrigeration chamber lighting (not shown) flashing in conjunction with opening / closing of the refrigerating chamber door 7 are provided, and lamps are covered with lamp covers.

The guide portion has a guide groove 39 recessed with respect to the reference end surface of the upper cold air distribution wing 33a, and the guide groove 39 is provided in a predetermined length section of the upper end portion. The action protrusion 81 of the eccentric action portion 80 is accommodated in the guide groove, and the received action protrusion 81 revolves according to the rotation of the rotation shaft 36 of the drive motor 35, and the guide groove 39 is provided. Sliding reciprocating along the guide length section of the. Since the pivot shaft 31 is provided at the rear side with respect to the rotation center of the rotary distribution blade 33a during the sliding reciprocating motion of the action protrusion 81, the cold air distribution blade 33a is the pivot shaft 31 as the axis. It will rotate left and right.

On the other hand, the vertical distribution unit, the horizontal distribution blade 51 which is installed in the cold air discharge port 16 so as to be rotated vertically in accordance with the left and right rotation of the cold air distribution blade 33, horizontal distribution for vertical rotation of the horizontal distribution blade 51. It has the wing drive part 60. 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. These horizontally distributed blades 51 have a front projection 57 and a back cutout 59 corresponding to the cold air discharge port 16, and have a substantially curved shape in which the attachment of the projections 57 is cut off.

The horizontal distribution blades 51 are provided with rotation pins 53 extending laterally from both end portions thereof. 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 flanges 45 are provided with a rotating pin ( A rotation hole 47 for accommodating 53 is provided to face each other. 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 this embodiment, three horizontal distribution blades 51 having such a configuration are provided along the vertical direction of each cold air discharge port 16.

The horizontal distribution wing drive unit 60 is a rod-shaped cam disposed in parallel with the rotation shaft 31 between the elevating drive cam 63 provided on the rotation shaft 31 and the cold air grill member 40 and the horizontal distribution wing 51. The horizontal wing interlocking member 61 and the horizontal wing interlocking member 61 to interact with the elevating drive cam 63 to elevate the horizontal wing interlocking member 61 during rotation of the elevating drive cam 65. It has a portion 67. The elevating driving cam 63 has a cam body 66 which is coaxially installed on the pivot shaft 31 of the horizontal distribution blade 51, and the cam body 66 has a camp profile that is elevated along its cylindrical surface. Cam grooves 65 are formed. 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.

On the other hand, in the horizontal wing interlocking member 61, a plurality of working rings 62 protruding from the outer circumferential surface toward the horizontal distribution blade 51 are provided in plural along the longitudinal direction. 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 horizontal wing interlocking member 61 and the working pin 55 of the horizontal distributing wing 51 are hinged to each other, whereby the horizontal distributing wing 51 is a horizontal wing interlocking member 61. In accordance with the elevating of the actuation pin 55 can be rotated up and down on the axis.

The vertical distribution part 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.

The cold air distribution device 30 according to the present embodiment having such a configuration is driven by the stepping motor 35 which is operated and controlled in accordance with an output signal from a controller (not shown). When the stepping motor 35 is driven, first, the action protrusion 81 of the eccentric action portion 80 is slidably reciprocated along the guide groove 39 of the cold air distribution wing 33a. The distribution blades 33a, 33b, 33c rotate left and right within a predetermined angle range with respect to the rotational shaft 31.

The operating state of this cold air distribution wing 33 is shown as a cross-sectional view in FIGS. As can be seen in these figures, the orbits formed by the revolving of the action protrusions 81 coincide with the circles that draw the diameters of both ends of the guide grooves 39 provided on the cold air distribution blade 33. At this time, since the pivot shaft 31 of the cold air distribution wing 33 deviates predetermined from the center of the cold air distribution wing 33 in the downstream direction, as shown in FIG. ) Is a predetermined limited rotation in the left and right directions. 6 and 7 show a limited rotational state of the cold air distribution wing 33, respectively. The cold air flowing through the cold air duct 15 toward the cold air discharge port 16 is discharged to the left and right directions according to the rotation angle position of the cold air distribution blade 33 to uniformly cool the inside of the refrigerating chamber. At this time, the rotation angle of the cold air distribution wing 33 can be changed by appropriately adjusting the diameter of the guide groove 39 to correspond to the size of the cold air discharge port 16.

On the other hand, in conjunction with the rotation of the cold air distribution blade 33, the horizontal distribution blade 51 is also rotated in the vertical direction. That is, when the rotation shaft 31 is rotated, the cam body 66 provided on the rotation shaft 31 rotates, and thus the action protrusion engaged with the cam groove 65 formed on the cylindrical surface of the cam body 66. (67) goes up and down along the camp profile. At this time, the horizontal wing interlocking member 61 is moved up and down along the axial direction so that the horizontal distributing wing 51 hinged with the horizontal wing interlocking member 61 is moved upward and downward from the front surface of the cold air discharge port 16. Will be rotated. The cold air distribution state in the horizontal direction according to the rotation of the horizontal distribution blade 51 is specifically illustrated in FIGS. 8 and 10.

As described above, in the refrigerator 1 having the present cold air distribution device 30, the horizontal distribution wing 51 is combined with the left and right rotations of the cold air distribution wing 33 so as to be combined with the vertical up and down rotation, and thus the inside of the refrigerator compartment. It is possible to realize uniform cooling in the horizontal and vertical directions. In addition, when intensive cooling is required, effective intensive cooling according to the combined control of the cold air distribution blade 33 and the horizontal distribution blade 51 can be achieved. That is, a plurality of temperature sensors are installed in the refrigerating chamber. When an output signal is applied to the controller from any one of these sensors, the controller rotates the stepping motor 35 in accordance with a predetermined program stored therein to identify the discharged cold air. The cold air distribution blades 33 and the horizontal distribution blades 51 are rotated to face the area. At this time, the horizontal distribution blade 51 rotates in the vertical direction in conjunction with the left and right rotation of the cold air distribution blade 33, it is possible to effectively intensive cooling in the local specific region in the refrigerator compartment.

As described above, according to the present invention, it is possible to provide a cold air distribution device having a relatively simple configuration, and to reduce the manufacturing cost, and to the combined vertical and horizontal rotation of the cold air distribution wing and the horizontal distribution wing of the cold air distribution device. This makes it possible to realize uniform cold distribution in the vertical and horizontal directions, while providing an excellent effect of achieving effective concentrated cooling.

Claims (11)

In the refrigerator having a cooling chamber for cooling and storing food, A duct installed on one sidewall of the cooling chamber to guide the flow of cold air and having a discharge port opened toward the cooling chamber; At least one plate-shaped cold air distribution wing that is reciprocally rotatable within a predetermined angle range in the tuck adjacent to the discharge port; And a driving means for reciprocating the cold air distribution wing. The method of claim 1, The drive means, A drive motor; A guide portion formed at one end of the cold air distribution wing over a predetermined length section; And an eccentric action unit which is engaged with the guide unit and reciprocates over the guide length section and is rotated by the drive motor by being eccentrically separated from a rotational shaft of the drive motor. The method of claim 3, The guide portion has a guide groove; The eccentric action unit is a refrigerator, characterized in that during sliding in the guide groove. The method according to claim 1 or 2, The rotation axis of the cold air distribution blade is provided in the downstream side of the cold air flow direction along the longitudinal direction of the cold air distribution blade, The method of claim 1, The cooling chamber is partitioned into a plurality of storage zones arranged in the upper and lower layers, and the discharge port is formed corresponding to each of the storage zones; And at least one cold air distribution vane is provided for each discharge port. The method of claim 1, At least one horizontal distributing wing installed at the cold air discharge port so as to be rotatable vertically; And a horizontal distribution wing driving means for vertically rotating the horizontal distribution wing. The method of claim 6, The horizontal distribution blade drive means, the refrigerator characterized in that it comprises a horizontal wing interlocking member hinged to each of the horizontal distribution wing. The method of claim 7, wherein The horizontal distribution wing drive means, An elevating drive cam installed on the rotating shaft of the cold air distribution wing; And a working part formed on the horizontal wing interlocking member to interact with the lifting driving cam to lift the interlocking member when rotating on the lifting driving cam. The method of claim 8, The elevating driving cam has a cam body having a cam body coaxially installed on the pivot shaft of the vertical distributing blade and a camping profile which is moved up and down along the cylindrical surface of the cam body; The action unit is a refrigerator, characterized in that the action projection engaging the cam groove. The method of claim 9, And a guiding means for guiding the interlocking member to be movable and prevented from rotating about a longitudinal axis. The method of claim 10, The guide means, A plate-shaped guide piece protruding transversely in the axial direction along the axis of the interlocking member; And a guide part formed in the duct and into which the guide piece is liftably inserted.