KR100234126B1 - Refrigerator and control method - Google Patents

Abstract

The present invention relates to a refrigerator and a method of controlling a refrigerator having a cooling chamber for cooling and storing food, the cooling chamber being installed on one side wall of the cooling chamber to guide the flow of cold air and opening at least one cold air outlet toward the cooling chamber. Cold air duct having; A shutter installed to open and close the cold air outlet; A rotating shaft rotatably installed in the cold air duct behind the shutter; At least one drive cam formed on the rotating shaft; A drive motor for rotating the rotating shaft; It is disposed between the shutter and the drive cam, characterized in that it comprises an action unit for converting the rotational movement of the drive cam to the sliding opening and closing movement of the shutter. As a result, it is possible to appropriately distribute the cold air discharged into the cooling chamber, and to prevent excessive cold air discharge than necessary, so that the inside of the cooling chamber can be always maintained at a uniform temperature distribution. And the aesthetics in a cooling chamber improve.

Description

Refrigerator and freezer control method {}

The present invention relates to a refrigerator, comprising: a shutter intermittently opened and closed at a cold air outlet provided in a cooling chamber to achieve uniform cooling in the cooling chamber, to prevent excessive cold air discharge, and to improve aesthetics in the cooling chamber. And a control method of the refrigerator.

The refrigerator has a refrigeration system for storing food and a refrigeration system for forming cold air, and the cold air generated by the refrigeration system flows along the cold air duct formed on the rear side of the cooling chamber, and is cooled by the blowing fan. It is supplied to the cooling chamber through the cold air discharge outlet provided in the.

By the way, in the conventional refrigerator, there is a region where the cold air discharged through the cold air discharge port is provided intensively and a relatively small area is provided, and thus the temperature deviation in the cooling chamber is intensified, thereby preventing a uniform cooling state. There is a problem. Thus, various forms of research have been conducted to remedy this problem, and as recently disclosed in WO 95/27278 filed by the present applicant with the PCT application, appropriately distributes the cold air discharged into the cooling chamber to A refrigerator having a cold air distribution device for maintaining a uniform temperature distribution has been proposed.

18 and 19 are refrigerators having a conventional cold air distribution device disclosed by the applicant. The refrigerator 101 is provided with 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, and in front of the openings of the respective cooling chambers 2 and 3. Opening and closing doors 6 and 7 are respectively provided. 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 cooling chamber fan 13b.

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

As shown in FIG. 20, 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 and driving 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 refrigerator 101 having the conventional cold air distribution device 110, since the configuration of the cold air distribution device 110 that is manufactured and mounted separately is relatively complicated and difficult to manufacture easily, the production cost of the refrigerator 101 Will rise. In some cases, a malfunction of the cold air distribution device 110 may occur. In this case, there is a problem in that cold air is not discharged to one side or excessive cold air may be supplied to one side without uniform cold air distribution. In the refrigerator 101 having the conventional cold air distribution device 110, the cold air discharge port 16 for discharging the cold air in the cooling chamber still remains open, and thus the inside of the cooling chamber by the cold air discharge ports 16 is thus maintained. There is a problem that the beauty of the view is lowered.

Accordingly, an object of the present invention is to remove the cold air distribution device, which is difficult to manufacture in the related art, to provide an open / close shutter at the cold air discharge port, and to distribute the cold air discharged appropriately so as to realize uniform cooling in the cooling chamber. It is to provide a control method of the refrigerator and the refrigerator as possible.

Another object of the present invention is to provide a refrigerator in which the aesthetics in the cooling chamber is improved by intermittently blocking the cold air discharge openings opened in the cooling chamber.

1 is a front sectional view of a cold air distributable refrigerator according to the present invention;

2 is a side cross-sectional view of FIG.

3 is an exploded perspective view of a shutter device for opening and closing a cold air outlet of a refrigerator according to a first embodiment of the present invention;

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

5 is a cross-sectional view of FIG. 4;

6 and 7 are views showing the operating state of the shutter device according to the first embodiment of the present invention,

8 is a control flowchart of a cold air distributable refrigerator according to a first embodiment of the present invention;

9 is an exploded perspective view of a shutter device for opening and closing a cold air discharge port of a refrigerator according to a second embodiment of the present invention;

10 is a rear perspective view of the assembled state of FIG. 9;

11 is a cross sectional view of FIG. 10;

12 and 13 are views showing an operating state of the shutter device according to the second embodiment of the present invention;

14 is an exploded perspective view of a shutter device according to a third embodiment of the present invention;

Figure 15 is a rear perspective view of the assembled state of Figure 14,

16 is a side cross-sectional view of FIG. 15;

17 is a control flow chart of a refrigerator capable of distributing cold air according to a third embodiment of the present invention;

18 is a side sectional view of a conventional cold air-distributable refrigerator;

19 is an enlarged partial view of FIG. 18;

20 is an exploded perspective view of a conventional cold air distribution device.

<Description of the symbols for the 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 16: cold air outlet

20: duct housing 30, 90, 95: shutter device

31: shutter 35: drive unit

37: axis of rotation 39: drive motor

40: cold air grill member 51: acting portion

57: working projection 61: drive cam

65: cam groove 81: guide rail

According to the present invention, in the refrigerator having a cooling chamber for cooling and storing food, at least one cold air discharge port installed on one side wall of the cooling chamber to guide the flow of cold air and opened toward the cooling chamber. Cold air duct having; A shutter installed to open and close the cold air outlet; A rotating shaft rotatably installed in the cold air duct behind the shutter; At least one drive cam formed on the rotating shaft; A drive motor for rotating the rotating shaft; Is disposed between the shutter and the drive cam, it is achieved by the refrigerator characterized in that it comprises an action unit for converting the rotational movement of the drive cam to the sliding opening and closing movement of the shutter.

Here, the drive cam has a cam groove having a cam body that is expanded in the radial direction of the cross section of the rotary shaft and is coaxial with each other, and a cam shaped profile that rises and falls along the cylindrical surface of the cam body: It may be composed of a working projection extending to engage the cam groove from the back of the.

The cooling chamber is partitioned into a plurality of storage zones arranged in upper and lower layers. The cold air discharge ports are formed corresponding to the respective storage zones; The shutter may be attached to each of the cold air discharge ports, and in each of the storage zones, a pair of cold air discharge ports parallel to the horizontal direction may be formed. In this case, the action portion includes: an action bar disposed in the transverse direction of the rotation shaft, each of the free ends being coupled to the shutters respectively attached to the parallel pair of cold air discharge ports; It can be configured simply by including a working protrusion extending from the action bar toward the drive cam to engage the cam groove.

On the other hand, the drive cam provided along the axial direction of the rotary cam is formed to correspond to the cold air discharge port provided in the layered storage area; The camp profile on the waveform of each of the drive cams has a predetermined phase difference, so that the shutters can be opened and closed sequentially by the rotation of the rotating shaft.

At this time, it is preferable to further include a guide means for guiding the sliding opening and closing of the shutter, the guide means, a pair of opposite to each other along the sliding direction of the shutter on the side edge of the cold air discharge port, It is preferable to configure the guide rail having a sliding groove formed to receive the sliding edge of the shutter.

On the other hand, according to another field of the present invention, the object is a cold air duct having a cooling chamber for cooling and storing food, and a cold air duct provided on the side wall of the cooling chamber to guide the flow of cold air and opened toward the cooling chamber. A control method of a refrigerator comprising: installing a shutter for sliding opening and closing the cold air discharge port, and rotating driving means for sliding the shutter; supplying cold air to the cold air duct; And driving the driving means to open the shutter, thereby discharging the cold air from the cold air duct through the cold air discharge port.

Here, the cooling chamber is partitioned into a plurality of storage zones arranged in the upper and lower layers, the cold air outlet is formed in each of the storage zones; The rotary drive means opens the shutters attached to the respective cold air outlets at the same time, or the cooling chamber is partitioned into a plurality of storage zones arranged in upper and lower layers, and the cold air discharge ports are formed in the respective storage zones; The rotation driving means may sequentially open the shutters attached to the respective cold air discharge ports.

And sensing a temperature at each of a plurality of places in said cooling chamber; Identifying a region requiring concentrated cooling in the cooling chamber based on the temperature detection signal; Rotating the rotation driving means, it is preferable to include a step of stopping the shutter for a predetermined time in the area requiring intensive cooling.

In addition, when the supply of cold air in the cold air duct is stopped, it is preferable to cause the rotation driving means to stop rotating at the position of closing the shutters.

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

1 is a front sectional view of a cold air distributable refrigerator according to the present invention, and FIG. 2 is a side sectional view of FIG. The refrigerator 1 which can be seen in these figures is divided into the freezer compartment 2 and the refrigerating compartment 3 by the intermediate | middle partition 5 in the substantially rectangular body similarly demonstrated with respect to FIG. 18 thru | or 20 conventionally. A pair of cooling chambers is 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 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. 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 cold air grill member (40) installed in front of the front plate (23).

The cold air discharge member 16 is provided in the cold air grill member 40 at predetermined intervals along its length direction so as to correspond to the storage space of the cooling chamber, and is parallel to each storage space in a horizontal direction. There is a pair. The front surface of the partial cylindrical cold air grill member 40 is slightly protruded from the rear wall surface of the refrigerating chamber 3 as a whole, so that the cold air flowing through the cold air duct is in a large discharge angle range through a pair of parallel cold air discharge ports. (3) to be distributed.

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 blown into the cold air duct 15 by the refrigerating chamber fan 13b is supplied into the refrigerating chamber 3 through each cold air discharge outlet, and the cold air discharged as described above to cool the refrigerating chamber 3 is circulated through the circulation duct 17. Return to the refrigerator compartment evaporator 12b.

On the other hand, each cold air discharge port 16 is provided with a shutter 31 for opening and closing the opening surface. Figure 3 is an exploded perspective view of the shutter device for opening and closing the cold air outlet of the refrigerator according to the first embodiment of the present invention, Figure 4 is a rear perspective view of the assembled state of Figure 3, Figure 5 is a cross-sectional view of FIG. As can be seen in these figures, the shutter 31 which opens and closes the opening face of the cold air discharge port 16 is a substantially rectangular plate body, and forms a smoothly curved plate surface to correspond to a front surface which protrudes inwardly. . In the cold air duct 15, a drive unit 35 for opening and closing the shutter 31 is provided.

The drive unit 35 includes a rotating shaft 37 rotatably installed in the longitudinal direction of the cold air duct 15 behind the shutter 31, a drive cam 61 formed on the rotating shaft 37, and a rotating shaft 37. ) And a working part 51 for converting the rotational motion of the drive cam 61 into the sliding opening / closing motion of the shutter 31. The lower end of the rotary shaft 37 is rotatably received in the rotary shaft hole 43 provided in the central region of the lower edge 41 of the cold air grill member 40, the other end is coupled to the drive shaft of the drive motor 39. . As the driving motor 39 of the present embodiment, it is preferable to use a stepping motor capable of controlling the stopping angle position.

The drive cam 61 formed on the rotating shaft 37 has a cam body 63 which is expanded in the radial direction of the cross section of the rotating shaft 37 and a cam groove 65 provided along the circumferential direction on the cylindrical surface of the cam body 63. Has) The cam body 63 is provided coaxially with the rotation shaft 37 and rotates integrally with the rotation of the rotation shaft 37, and the cam groove 65 is a wave shaped camp profile that moves up and down along the circumferential direction of the cam body 63. Have

On the other hand, the acting portion 51 is composed of a horizontal member 53 in the horizontal direction and a vertical member 55 extending downward from the center region of the horizontal member 53 and has a substantially "T" shape as a whole. Shutters 31 are fixed to both ends of the member 53, respectively. The lower end of the vertical member 55 is provided with a working projection 57 protruding toward the driving cam 61. The actuating protrusion 57 is engaged with the cam groove 65 of the driving cam 61, and when the cam body 63 rotates, it rotates up and down along the camp profile formed by the cam groove 65. do.

As a result of the lifting and lowering of the actuating protrusion 57, the lifting and lowering motion of the acting portion 51 is enabled, whereby the shutters 31 on both sides coupled to the acting portion 51 are the opening surfaces of the cold air outlet 16. The sliding movement along the vertical direction becomes possible. On the other hand, the back of the cold air grill member 40 is provided with a guide rail 81 for guiding the sliding opening and closing of the shutter 31. The guide rails 81 are provided in pairs opposed to each other along the sliding direction of the shutter 31 on both side edges of the cold air discharge port 16, and accommodate the sliding edges of the shutters 31 on opposite surfaces. It has a sliding groove 83.

6 and 7 are side cross-sectional views showing an operating state of the shutter apparatus according to the first embodiment of the present invention. The driving motor 39 is intermittently driven by the control signal of the controller, and FIG. 6 illustrates a state in which the driving motor 39 is stopped and the shutter 31 closes the cold air discharge port 16. When a drive signal is applied to the drive motor 39, the drive motor 39 rotates at a predetermined speed to rotate the rotating shaft 37 by 360 °. Then, the drive cam 61 is rotated by the rotation of the rotary shaft 37, and at this time, the actuating projection 57 engaged with the cam groove 65 of the drive cam 61 is moved up and down along the camp profile. The acting portion 51 is lifted up and down. Accordingly, the shutters 31 fixedly coupled to both sides of the action part 51 are also lifted in conjunction with each other, and FIG. 7 illustrates a state in which the shutter 31 opens the cold air discharge port 16 to the maximum.

As can be seen in the figure, since the shutter 31 is raised and lowered in front of the cold air discharge port 16 by the drive motor 39 which rotates continuously, the amount of cold air discharged according to the lifted position of the shutter 31 is increased. Will change. Thereby, the amount of cold air discharged in the refrigerating chamber can be adjusted by appropriately adjusting the lifting position of the shutter 31, that is, by stopping the drive motor 19 at a predetermined rotation angle position.

Hereinafter, a method of controlling a cold air distributable refrigerator according to a first embodiment of the present invention will be described with reference to a flowchart as shown in FIG. 8. In the refrigerator 1, operation is started by applying power from the outside (PS). The user sets the temperature in the cooling chamber through a temperature control unit (not shown), and the control unit compares the temperature in the cooling chamber with the set temperature by the temperature signals from the temperature sensors 9a and 9b (S3). At this time, when the temperature in the cooling chamber is above the set temperature, the control unit operates the refrigeration system to form cold air around the evaporator 12b and blows cold air into the cold air duct using the cooling chamber fan 13b (S4).

When cold air is supplied, the control unit outputs a control signal to rotate the driving motor 39. Then, the shutter 31 which blocks the cold air outlet 16 is lifted by the operation of the shutter device 30 as described above, thereby continuously performing the operation of opening and closing the cold air outlet 16 again (S5). ). When the cold air discharge port 16 is opened by the lifting motion of the shutter 31, the cold air from the cold air duct 15 is discharged into the refrigerating chamber. At this time, since the cold air discharge port 16 is opened toward both side walls of the refrigerating chamber 3, the discharge cold air is discharged toward both side walls of the refrigerating chamber 3. The discharged cold air circulates along both side walls, whereby uniform cooling is realized in the cooling chamber.

While the cold air is discharged in the refrigerating compartment by the lifting and lowering of the shutter 31, the controller detects the temperature in the refrigerating compartment and compares it with the set temperature (S6). Therefore, the shutter device 30 is continuously driven until the temperature in the refrigerating chamber is lower than or equal to the set temperature (S5). When the temperature is lower than or equal to the set temperature, the refrigeration system is stopped to stop the supply of cold air (S7). ). Then, the driving of the shutter device 30 is stopped (S8). Then, when the operating temperature is maintained (S2), when the temperature in the refrigerating chamber is again above the set temperature (S3), by performing a series of control operations as described above it is possible to maintain a uniform temperature distribution in the refrigerating chamber at all times. Make sure

9 is an exploded perspective view of the shutter apparatus according to the second embodiment of the present invention, FIG. 10 is an assembled rear perspective view of FIG. 9, and FIG. 11 is a cross-sectional view of FIG. 10. The shutter device 90 shown in these figures is configured to simplify the shutter device of the first embodiment and to reduce the manufacturing cost. The shutter device 90 has a plate-shaped shutter 31 capable of integrally blocking a pair of cold air discharge ports 16 provided in the storage areas of the refrigerating chamber 3 in parallel in the horizontal direction. Similarly to the example, the rotary shaft 37 having the drive cam 61 is provided on the rear side of the shutter 31. The shutter 31 is provided with a working protrusion 57 protruding toward the rotation shaft 37, and the working protrusion 57 is engaged with the cam groove 65 of the drive cam 61.

12 and 13 are side cross-sectional views of FIG. 9, which is an operational state diagram of the cold air distribution device according to the second embodiment of the present invention. When the driving motor 39 is driven to rotate the rotation shaft 37, the working protrusion 57 engaged with the cam groove 65 of the driving cam 61 is raised and lowered, thereby lifting and lowering the shutter 31. This is done. As the shutter 31 moves up and down, cold air is discharged through both side cold air outlets 61 in the refrigerating chamber, and thus, uniform cold air is supplied into the cooling chamber. The refrigerator 1 having the shutter device 90 according to the second embodiment can also be operated and controlled by the same control method as described with reference to FIG. 8.

14 is an exploded perspective view of the shutter device according to the third embodiment of the present invention, FIG. 15 is a rear perspective view of the assembled state of FIG. 14, and FIG. 16 is a longitudinal sectional view of FIG. A shutter device 95 is shown which is configured to sequentially open and close the cold air outlet 16 formed in the zone. As can be seen from the figure, the shutter apparatus 95 according to the present embodiment has the same configuration as the shutter apparatuses 30 and 90 of the first and second embodiments, and is merely formed on the rotating shaft 37. Only the drive cam 61 which has it has a different shape. That is, each of the drive cams 61 provided in the axial direction of the rotating shaft 39 has a camp profile formed on the cylindrical surface of the cam body 63, respectively. Thus, the lifting motion of the shutter 31 for opening and closing the cold air discharge port 16 along the lifting and lowering of the working protrusion 57 may be sequentially performed.

17 is a control flowchart of a refrigerator having a shutter device according to a third embodiment of the present invention. Similarly to the control method of the first embodiment described with reference to FIG. 8, the present refrigerator 1 starts operation by applying power from the outside (P1). The user sets the temperature in the cooling chamber through a temperature control unit (not shown), and the control unit compares the temperature in the cooling chamber with the set temperature through the temperature signals from the temperature sensors 9a and 9b (P3). At this time, when the temperature in the cooling chamber is higher than the set temperature, the control unit operates the refrigeration system to form cold air around the evaporator 12b and blows cold air into the cold air duct using the cooling chamber fan 13b (P4).

When cold air is supplied, the control unit outputs a control signal to rotate the driving motor 39 at a predetermined speed. Then, the drive cam 61 provided on the rotating shaft 37 has a predetermined phase difference, and the shutter 31 which blocks the cold air discharge port 16 is raised and lowered sequentially (P5). When the cold air discharge port 16 is opened by the lifting motion of the shutter 31, the cold air from the cold air duct 15 is discharged into the refrigerating chamber. At this time, the discharge cold air is discharged toward both side walls of the refrigerating chamber 3 by the shape of the cold air discharge port 16 formed in the cold air grill member 40 to realize uniform cooling in the cooling chamber.

While the cold air is discharged in the refrigerating compartment by the lifting movement of the shutter 31, the controller detects the temperature in the refrigerating compartment and confirms whether a temperature deviation has occurred in the refrigerating compartment (P6). At this time, when a temperature deviation occurs, the controller stops the driving motor 39 to rotate to allow the cool air to be concentrated in the corresponding region, thereby completely opening the shutter 31 of the corresponding region (P10). On the other hand, when the temperature deviation does not occur, the shutter device 95 is continuously driven until the temperature in the refrigerating chamber is lower than or equal to the setting temperature in comparison with the temperature in the refrigerating chamber and the set temperature (P7). When the temperature is lower than the set temperature, the controller stops the operation of the refrigeration system to stop the supply of cold air (P8) and at the same time stops the driving of the shutter device 95 (P9). Thereafter, when the temperature in the refrigerating compartment becomes higher than the set temperature again in the operating temperature state (P3), the above-described series of control operations are repeatedly performed to maintain a uniform temperature distribution in the refrigerating compartment at all times.

As described above, according to the control method of the cold air-distributable refrigerator and the refrigerator according to the present invention, it is possible to raise and lower the shutter intermittently installed in the cold air discharge port to distribute the cold air discharged into the cooling chamber properly. At the same time, excessive cold air discharge can be prevented. When a temperature deviation occurs, it is possible to maintain a uniform temperature distribution state in the cooling chamber by supplying cold air intensively in a corresponding region. The refrigerator according to the present invention can also intermittently block the cold air discharge port opened in the cooling chamber, thereby improving the aesthetics in the cooling chamber.

Claims (14)

(correction) 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 at least one cold air discharge opening opened toward the cooling chamber; A shutter installed to open and close the cold air outlet; A rotating shaft rotatably installed in the cold air duct behind the shutter; At least one drive cam formed on the rotating shaft; A drive motor for rotating the rotating shaft; The refrigerator is disposed between the shutter and the drive cam, characterized in that the refrigerator comprises an action unit for converting the rotational movement of the shutter to the sliding opening and closing movement. (delete) The method of claim 1, The drive cam, A cam groove having a cam body that is expanded in the radial direction of the cross section of the rotary shaft and is coaxial with each other, and has a corrugated camp profile that moves up and down along the cylindrical surface of the cam body: The acting portion is a refrigerator, characterized in that the actuating projections extending from the rear of the shutter to engage the cam groove, The method of claim 1, The cooling chamber is partitioned into a plurality of storage zones arranged in upper and lower layers; The cold air discharge ports are formed corresponding to the respective storage zones; And the shutter is attached to each of the cold air discharge ports. The method of claim 4, wherein Each of the storage zones, the refrigerator characterized in that a pair of cold air outlets parallel to the horizontal direction is formed. The method according to claim 1 or 5, The action part, An action bar disposed in the transverse direction of the rotation shaft, each of the free ends being coupled to the shutters respectively attached to the pair of parallel cold air discharge ports; And a working protrusion extending from the working bar toward the driving cam and engaged with the cam groove. The method according to claim 1 or 4, The drive cam provided along the axial direction of the rotary cam is formed to correspond to the cold air discharge port provided in the layered storage area; The camp profile on the waveform of each of the drive cams has a predetermined phase difference, and the shutter is sequentially opened and closed by the rotation of the rotating shaft. The method of claim 1, The refrigerator further comprises a guide means for guiding the sliding opening and closing of the shutter. The method of claim 8, The guide means, And a guide rail having a sliding groove formed at a side edge of the cold air discharging outlet facing each other along the sliding direction of the shutter, and having a sliding groove formed to receive the sliding edge of the shutter on an opposite surface. In the control method of the refrigerator comprising a cooling chamber for cooling and storing food, and a cold air duct provided on the side wall of the cooling chamber and guides the flow of cold air and has a cold air outlet opening toward the cooling chamber. Installing a shutter for sliding opening and closing the cold air discharge port, and a rotary drive means for sliding the shutter; Supplying cold air to the cold air duct; And driving the driving means to open the shutter, thereby discharging the cold air from the cold air duct through the cold air discharge port. The method of claim 10, The cooling chamber is partitioned into a plurality of storage zones arranged in upper and lower layers, and the cold air outlet is formed in each of the storage zones; And the rotation driving means simultaneously opens the shutters attached to each of the cold air discharge ports. The method of claim 10, The cooling chamber is partitioned into a plurality of storage zones arranged in upper and lower layers, and the cold air outlet is formed in each of the storage zones; The rotation driving means is a control method of the refrigerator, characterized in that to open the shutters attached to each of the cold air discharge sequentially. The method of claim 12, Sensing a temperature at each of a plurality of locations in the cooling chamber; Identifying a region requiring concentrated cooling in the cooling chamber based on the temperature detection signal; And rotating the rotation driving means to stop the shutter in a region requiring intensive cooling for a predetermined time. The method according to any one of claims 10 to 13, And when the supply of cold air in the cold air duct is stopped, the rotation driving means is stopped at a position for closing the shutters.

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