KR19990030704A - Refrigerator with cold air distributor - Google Patents

Abstract

The present invention relates to a refrigerator having a cooling chamber, comprising: a cold air duct provided on a wall surface of the cooling chamber to guide the flow of cold air and having a cold air discharge port opened toward the cooling chamber; A pair of left and right distributing blades disposed in parallel to each other in a vertical direction to the rear of the cold air discharge port and capable of integrally rotating; Both side auxiliary wings coupled to the outer surface of each of the left and right distributing wings so as to be vertically flowable; It includes a drive motor for rotating the left and right distribution wings. As a result, a combination of cold air from the cold air duct can be combined in the vertical direction and the left and right directions, so that the inside of the cooling chamber can be maintained in a uniform temperature distribution state. By intensive discharge, it can be removed quickly.

Description

Refrigerator with cold air distributor

The present invention relates to a refrigerator having a cold air distribution device, and in particular, by installing the auxiliary wings that can be vertically flowable on the plate surface of the left and right distribution blades arranged in parallel to the left and right rotation, the combined cold air distribution and concentrated cooling in the vertical direction To achieve this.

Refrigerators having a cold air distribution device have been proposed in various forms by the present applicant. 1 is a side cross-sectional view of a refrigerator having such a conventional cold air distribution device. As can be seen from these figures, the refrigerator 101 having the conventional cold air distribution device has a pair of coolings divided into a freezer compartment 2 and a refrigerating compartment 3 by an intermediate partition 5 in a substantially rectangular main body. A seal is provided, and the opening / closing doors 6 and 7 are provided in 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. On both inner wall surfaces of the refrigerating chamber 3, temperature sensing sensors 9a and 9b which face each other in a diagonal direction are provided, respectively.

In the main body 4, a compressor 11, a condenser, a freezer compartment evaporator 12a, and a refrigerator compartment evaporator 12b, which are not shown, are installed to perform a refrigeration cycle, and cold air is generated in each of the evaporators 12a and 12b. A freezer compartment fan 13a and a refrigerating compartment fan 13b are installed above the evaporators 12a and 12b to forcibly blow cold air generated in each of the evaporators 12a and 12b to the freezer compartment 2 or the refrigerator compartment 3.

On the rear wall surface of the refrigerating chamber 3, a duct housing 20 is provided which forms a cold air duct 15 that provides a flow path of cold air from the evaporator 12b. The duct housing 20 includes a duct member 21 for forming cold air ducts 15 to insulate cold air insulated, a front plate 23 attached to the front surface of the duct member 21, and a duct member 21. It consists of a seal plate (25) adhered to the back of the) and a partial cylindrical duct cover (40) installed in a form surrounding the cold air distribution device (30) in front of the front plate (23).

The duct cover 40 is provided with cold air outlets 16 opened toward the refrigerating chamber 3 at predetermined intervals along the longitudinal direction thereof. Such a duct cover 40 is provided in the accommodation portion of the front plate 23. The front plate 23 is provided to form a plane substantially the same as the inner wall surface of the refrigerating chamber 3, the duct cover 40 is provided to protrude from the front plate 23 to the inside of the refrigerating chamber (3). Accordingly, the duct cover 40 and the cold air distribution device 30 protrude slightly from the rear wall surface of the refrigerating chamber 3 as a whole, so that the cold air guided by the cold air distribution device 30 has 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 later, is supplied into the refrigerating chamber 3 by the cold air blown into the cold air duct 15 by the refrigerating chamber fan 13b. 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.

On the other hand, the conventional cold air distribution device 50, as can be seen in Figure 2, the rotary shaft 31 which is rotatably installed in the vertical direction on the front surface of the cold air discharge port 16, and is provided along this rotation axis It consists of the plate-shaped cold air | distribution wing part 33 and the drive motor 35 which rotates the rotating shaft 31. As shown in FIG. The cold air | distribution wing part 33 has a pair of left-right distribution blades 33a and 33b which mutually oppose a plate-shaped object, and is provided in predetermined length along the longitudinal direction of the rotating shaft 33. As shown in FIG. The pair of opposed left and right distributing blades 33a and 33b is fixed by disc-shaped connecting plates 37 provided respectively on the upper and lower distal ends. These connecting plates 37 face each other in the vertical direction, and serve to connect the left and right distributing blades 33a and 33b in parallel.

On the other hand, the rotary shaft 31 for fixing the respective cold air distribution blades 33 in the vertical direction is interposed in the vertical direction in the state removed between the opposing left and right distribution blades (33a, 33b) connecting the other side 37 Are interconnected. Thereby, each cold air distribution wing part 33 can be fixedly supported in parallel along the rotation axis. These cold air distribution wings 33 are provided to correspond to the cold air discharge ports 16 formed in the duct cover 40, respectively. In this embodiment, three pairs of cold air distribution blades 33 corresponding to the cold air discharge ports 16 provided in the storage area partitioned into upper, middle and lower floors are provided in the refrigerating chamber. The upper end of the rotating shaft 31 is coupled to the drive motor 35, and the lower end is rotatably supported by the lower flange portion 28 of the duct cover 40. The drive motor 35 is attached to a motor case (not shown) at the top of the front plate 23.

By this configuration, the left and right distribution blades 33a and 33b of the present cold air distribution device 30 are rotated 360 ° by the drive of the drive motor 35. At this time, cold air from the cold air duct 15 is discharged between the left and right distribution vanes 33a and 33b, and the cold air is stored in the refrigerating chamber according to the rotation angle positions of the left and right distribution vanes 33a and 33b which rotate continuously. Evenly distributed.

By the way, in the refrigerator having such a conventional cold air distribution device, since the cold air is distributed only in the left and right directions in the refrigerating compartment and the cold air distribution is not performed in the up and down direction, temperature deviation may occur in the up and down direction in the refrigerating compartment.

Accordingly, an object of the present invention, in consideration of such a conventional problem, it is possible to achieve a cold air distribution in the cooling chamber in the up and down and left and right directions, and when a temperature deviation occurs, there is provided a cold air distribution device that can be removed quickly It is to provide a refrigerator.

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

Figure 2 is an exploded perspective view of a conventional cold air distribution device,

3 is a front view of a refrigerator having a cold air distribution device according to the present invention;

4 is a side cross-sectional view of FIG.

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

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

FIG. 7 is a partially enlarged view of FIG. 5 and illustrates a mutually coupled state of left and right distribution wings and an auxiliary wing according to the present invention; FIG.

8 is a cross-sectional view of FIG. 6,

9 is a side cross-sectional view of FIG. 6.

<Description of Symbols for Main Parts of Drawings>

2, 3: Cooling chamber 5: Intermediate bulkhead

6, 7: door 12a, 12b: evaporator

13a, 13b: blower fan 15: cold air duct

16a, 16b, 16c: cold air outlet 20: duct housing

21 duct member 28 flange portion

30: cold air distribution device 31: rotating shaft

33a, 33b: left and right distribution wings 37: connecting plate

40: duct cover 45: fixing hole

47: turning groove 49a, 49b, 49c: locking jaw

51a, 51b: two auxiliary wings 55a, 55b: fixing protrusion

61: center auxiliary wing 63a, 63b: fixed pin

67: pin ball 69: moving groove

According to the present invention, there is provided a refrigerator having a cooling chamber, comprising: a cold air duct provided on a wall surface of the cooling chamber to guide the flow of cold air and having a cold air outlet opening toward the cooling chamber; A pair of left and right distributing blades disposed in parallel to each other in a vertical direction to the rear of the cold air discharge port and capable of integrally rotating; Both side auxiliary wings coupled to the outer surface of each of the left and right distributing wings so as to be vertically flowable; It is achieved by a refrigerator comprising a drive motor for rotating the left and right distribution wings.

Here, the two auxiliary wings have an arcuate front edge, a rear edge connecting the both sides of the front edge in a straight line, and a pair of fixing projections protruding from the rear edge; Each of the left and right distributing wings is provided with a fixing hole for rotatably accommodating one side fixing protrusion of the two side auxiliary wings and a turning groove for rotatably accommodating the other fixing protrusion, and the two side auxiliary wings vertically cool down the cold air from the cold duct. Can be distributed in the direction.

The central auxiliary wing may further include a central auxiliary wing interposed in a horizontal direction between the pair of left and right distribution wings, and the central auxiliary wing may protrude two pairs of pins parallel to both sides. Has a platelet; Each of the left and right distribution wings can be provided with a pin hole for rotatably fixing the pair of fixing pins, and a moving groove for rotatably fixing the other pair of fixing pins.

On the other hand, the cooling chamber is partitioned into a plurality of storage zones arranged in the upper and lower layers; Cold air outlets are provided to correspond to the storage areas; The pair of left and right distribution wings may be configured to be formed in the vertical direction to be attached to each of the cold air discharge port.

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

3 is a front view of a refrigerator having a cold air distribution device according to the present invention, Figure 4 is a side cross-sectional view of FIG. As can be seen from these figures, the present refrigerator has the same configuration as that of the conventional FIGS. 1 and 2, and therefore, the detailed description is replaced by the cold air distribution apparatus 30 having a different configuration from that described above. This will be described. At this time, the same reference numerals are used for the same configurations and names as in the prior art.

5 is an exploded perspective view of the cold air distribution device according to the present invention, Figure 6 is an assembled rear perspective view of FIG. This cold air distribution device 30, as described with reference to Figure 2 of the prior art, mutually opposite left and right distribution that is rotatably installed in the vertical direction behind the duct cover 40, the cold air discharge port 16 is provided Cold air distribution blades 33 having wings 33a and 33b, bilateral auxiliary wings 51a and 51b which are installed on the left and right distribution blades 33a and 33b so as to be flowable up and down, and cold air distribution blades 33 ) Has a drive motor 35 for rotating it. The front surface where the cold air discharge port 16 of the duct cover 40 is formed slightly protrudes to the front side from the rear wall of the refrigerating chamber 3, whereby the cold air from the cold air duct 15 is in a large discharge angle range. It is distributed in the refrigerator compartment 3.

The left and right distribution blades 33a and 33b of the cold air distribution blade unit 33 have a plate-like shape and are arranged at a predetermined distance. They are rotatable integrally by a connecting plate 37 for fixing the upper and lower ends in parallel with each other. The connecting plate 37 has a disk shape and has a rotation shaft 31 protruding from the plate surface. The cold air distribution blades 33 are coupled to each other through these rotary shafts 31, and in this embodiment, three cold air distribution blades 33 corresponding to the cold air discharge ports 16 provided in the duct cover 40 are provided. It is connected in the vertical direction. The upper end of the rotary shaft 31 is coupled to the drive shaft of the drive motor 35, and the lower end is rotatably supported by the lower flange portion 28 of the duct cover 40. The connecting plate 37 also serves to prevent cold air discharged between the right and left distribution blades 33a and 33b from being dispersed up and down.

The drive motor 35 is accommodated and installed in a motor case (not shown) on the upper portion of the cold air duct 15. In this embodiment, the driving motor 35 is constituted by a stepping motor capable of forward and reverse rotation and controlling the stop 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.

On the other hand, the two auxiliary wings (41a, 41b), as can be seen in more detail in Figure 7, has a front edge 54 on the partial arc, the rear edge connecting the two sides of the front edge 54 in a straight line It has a pair of fixing protrusions 55a and 55b which protrude in parallel from 56. As shown in FIG. Correspondingly, on the plate surfaces of the left and right distributing wings 33a and 33b, a turning hole 45 for pivotably fixing the fixing protrusions 55b on one side of the two auxiliary blades and the turning protrusion 55a on the other side are pivotable. 47 is provided. The fixing projections of the auxiliary blades accommodated in the fixing hole 45 and the turning groove 47 are prevented from being separated by screwing inward from the left and right distribution blades, respectively.

Then, the locking grooves 47 formed on the plate surfaces of the left and right distribution wings 33a and 33b are formed with locking jaws 49a, 49b, and 49c in the upper, middle, and lower stages along the longitudinal direction thereof. The fixing protrusion 55a of the other side which pivots the fixing protrusion 55b of one side is hold | maintained on either side of these latching jaws 49a, 49b, 49c. The auxiliary wings 51a and 51b maintain a predetermined rotational angle on the plate surfaces of the left and right distribution wings 33a and 33b according to the position of the fixing protrusion 55a stopped at the locking jaw on one side. As a result, the cold air from the cold air duct 15 is guided in accordance with the rotation angle positions of the two auxiliary wings 51a and 51b and discharged into the refrigerating chamber.

On the other hand, between the left and right distribution blades 33a and 33b in which the fixing hole 45 and the turning groove 47 are formed, the central auxiliary blade 61 of a substantially rectangular plate is interposed so that it can flow up and down. The central auxiliary wing 61 is provided with two pairs of fixing pins 63a and 63b protruding laterally at both edges thereof. Correspondingly, in the upper regions of the left and right distribution wings 33a and 33b, a pin hole 67 for rotatably accommodating the corresponding one side fixing pin 63b and a movement for pivotally accommodating the other side fixing pin 63a are rotated. The groove 69 is provided. These pin holes 67 and the moving grooves 69 are formed to face the left and right distributing blades 33a and 33b facing each other, and the fixing pins 63a, which are accommodated in the pin holes 67 and the moving grooves 69, respectively. 63b) is screwed from the outer side similarly to the fixing projections 55a and 556 of the above-mentioned both auxiliary wings 51a and 51b.

Similarly to the turning groove 47, the pinching jaws 65a, 65b, and 65c are provided in the moving groove 69 along the longitudinal direction thereof. Thereby, the central auxiliary wing 61 between the left and right distribution vanes 33a and 33b can maintain a predetermined rotational angle, and the cool air passing therebetween is guided according to the rotational angle position of the central auxiliary wing 61 to be refrigerated. It is distributed in the vertical direction of (3).

With this configuration, in the refrigerator 1 having the present cold air distribution device 30, when a power source from the outside is applied to operate the refrigeration system and cold air is formed around the evaporator 12b, the control unit (not shown) The wind fan 13b is operated to blow cold air around the evaporator 12b to the cold air duct 15. Then, by outputting a control signal to the drive motor 35 to rotate the rotating shaft 31 360 °. Then, the cool air flowing through the cold air duct 15 and discharged to the cold air discharge port 16 is distributed in the refrigerating chamber in the left and right directions by the guide of the left and right distributing blades 33a and 33b which rotate in association with the rotary shaft 31. Fig. 8 is a cross sectional view of Fig. 6, which shows the discharge state of the cold air guided by the rotation of the left and right distribution blades 33a and 33b.

On the other hand, before the start of the operation of the cold air distribution device 30 or during the temporary stop during the cooling process, the user has the two auxiliary wings 51a, 51b and the central auxiliary wings 61 coupled to the plate surfaces of the left and right distribution wings 33a, 33b. ) Can be stopped at any rotational position. Then, the cold air divided by the left and right distribution blades 33a and 33b is guided according to the up and down rotation angle positions of both side and center auxiliary wings 51a, 51b, and 61 and is supplied in the corresponding direction. FIG. 9 is a side cross-sectional view of FIG. 6 in which these two and central auxiliary wings are positioned.

In the refrigerating chamber, temperature sensing sensors 19a and 19b are provided in plural places. These sensors 19a and 19b sense the temperature in the refrigerating compartment and generate a detection signal to the control unit. The control unit applying the detection signal determines whether or not a temperature deviation occurs in the refrigerating compartment. Therefore, when the temperature deviation becomes a predetermined value or more, the control signal is output to the drive motor 35, and the left and right distribution blades 33a and 33b are stopped to rotate so that cold air can be concentrated in the corresponding area. At this time, if both sides and the central auxiliary wings 51a, 51b, 61 coupled to the plate surfaces of the left and right distribution vanes 33a, 33b are appropriately operated, effective centralized cooling can be performed in the local area of the refrigerating compartment.

As described above, according to the present invention, it is possible to achieve a combination of cold air from the cold air duct in the vertical and horizontal directions, thereby maintaining the inside of the cooling chamber at a uniform temperature distribution, while the temperature deviation is When generated, a refrigerator having a cold air distribution device that can be quickly removed by intensively discharging cold air in a region having a low temperature is provided.

Claims (6)

In the refrigerator having a cooling chamber, A cold air duct provided on a wall surface of the cooling chamber to guide the flow of cold air and having a cold air discharge port opened toward the cooling chamber; A pair of left and right distributing blades disposed in parallel to each other in a vertical direction to the rear of the cold air discharge port and capable of integrally rotating; Both side auxiliary wings coupled to the outer surface of each of the left and right distributing wings so as to be vertically flowable; Refrigerator comprising a drive motor for rotating the left and right distribution wings. The method of claim 1, The two auxiliary wings have an arcuate front edge, a rear edge connecting the front edge of the front edge in a straight line, and a pair of fixing protrusions protruding from the rear edge; Each of the left and right distribution wings is provided with a fixing hole for rotatably accommodating one side fixing projections of the two side auxiliary wings and a turning groove for receiving the other fixing projections rotatably. The method of claim 2, The two auxiliary wings are refrigerators, characterized in that to distribute the cold air from the cold air duct in the vertical direction. The method of claim 2, A refrigerator further comprising a central auxiliary wing interposed in the horizontal direction between the pair of left and right distribution vanes and capable of vertically moving. The method of claim 4, wherein The central auxiliary wing has a plate-like body protruding two pair of pins parallel to both sides; Each of the left and right distribution wings is provided with a pin ball for rotatably fixing the pair of fixing pins, and a moving groove for rotatably fixing the other pair of fixing pins. The method of claim 1, The cooling chamber is partitioned into a plurality of storage zones arranged in upper and lower layers; Cold air outlets are provided to correspond to the storage areas; The pair of left and right distribution wings are formed in the up-and-down direction to be attached to each of the cold air discharge port.