JP7296621B2 - Shielding device and refrigerator with same - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielding device and a refrigerator having the shielding device, and more particularly to a shielding device and a refrigerator including the shielding device that appropriately blocks an air passage leading from a cooling chamber to a storage compartment.

2. Description of the Related Art Conventionally, there has been known a refrigerator in which a single cooler appropriately cools a plurality of storage compartments, as described in Patent Document 1.

FIG. 28 schematically shows a refrigerator 100 described in this document. A refrigerator 100 shown in this figure has a refrigerator compartment 101, a freezer compartment 102 and a vegetable compartment 103 from above. A cooling chamber 104 in which a cooler 108 is housed is formed on the far side of the freezing chamber 102, and a partition wall 105 separating the cooling chamber 104 and the freezing chamber 102 supplies cold air to each storage chamber. An opening 106 is formed for this purpose. A blower fan 107 for blowing cold air is arranged in the opening 106 , and a blower cover 110 covering the blower fan 107 is arranged on the freezer compartment 102 side. A damper 114 is arranged in the middle of the air passage 109 through which cold air supplied to the refrigerator compartment 101 flows.

Referring to FIG. 29, blower cover 110 described above will be described in detail. Blower cover 110 is formed with a recess 111 having a substantially rectangular shape, and an opening 113 is formed by partially notching the upper portion of recess 111 . Here, when the blower cover 110 covers the blower fan 107 described above, the opening 113 of the blower cover 110 communicates with the air passage 109 on the refrigerator main body side.

The refrigerator 100 configured as described above operates as follows. First, when cooling both the refrigerator compartment 101 and the freezer compartment 102, the blower cover 110 is separated from the blower fan 107, the damper 114 is opened, and the blower fan 107 is rotated in this state. Then, part of the cool air cooled by the cooler 108 inside the cooling chamber 104 is blown to the freezer compartment 102 by the blowing force of the blower fan 107 . Another part of this cold air is sent to refrigerator compartment 101 via air passage 109 , damper 114 and air passage 109 . Both the freezer compartment 102 and the refrigerator compartment 101 are thereby cooled.

On the other hand, when only refrigerating compartment 101 is cooled, blower fan 107 is covered with blower cover 110, damper 114 is opened, and cold air cooled by cooler 108 is blown by blower fan 107 in this state. When the fan cover 110 is closed, the opening 113 formed in the upper part of the fan cover 110 communicates with the air passage 109 . Therefore, the cold air blown by the blower fan 107 is supplied to the refrigerator compartment 101 via the opening 113, the damper 114, and the air passage 109 described above.

As described above, by using the blower cover 110 in which the opening 113 is formed, it is possible to appropriately cool a plurality of storage compartments with one cooler 108 .

JP 2013-2664 A

However, blower cover 110 configured as described above closes opening 106 of cooling chamber 104 by moving backward, and opens opening 106 of cooling chamber 104 by moving forward. In addition, a drive mechanism is required to move the fan cover 110 in the front-rear direction.

Furthermore, the blower cover 110 requires a space for opening and closing operations along the front-rear direction. Therefore, a large space is required inside refrigerator 100 for opening and closing operation of fan cover 110 . As a result, the internal volume of the freezer compartment 102 formed in front of the blower cover 110 is squeezed, and there is a problem that the amount of the stored material that can be stored in the freezer compartment 102 is limited. Furthermore, when the blower cover 110 is moved back and forth by the motor, driving noise is generated, and if the driving noise is loud, the user may feel uncomfortable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shielding device that does not compress the internal volume of the refrigerator and produces a low driving noise, and a refrigerator equipped with the shielding device.

A shielding device according to the present invention is a shielding device for blocking an air passage through which cold air is blown inside a refrigerator, comprising a plurality of rotating shielding walls surrounding a fan from the outside in the radial direction, and a shield for driving the rotating shielding walls. a wall driving mechanism, wherein the shielding wall driving mechanism is provided in plurality, and the shielding wall driving mechanism includes a cam rotatably connected to the rotating shielding wall and a groove for sliding the cam. and a driving motor for rotating the rotating plate, the rotating shaft of the driving motor is connected to the rotating plate so as not to rotate relative to each other, and the moving shaft of the cam extends through the groove characterized by being slidably engaged with the

A shielding device according to the present invention is a shielding device for blocking an air passage through which cool air is blown inside a refrigerator, comprising a plurality of rotating shielding walls surrounding a fan from the outside in the radial direction, and a shield for driving the rotating shielding walls. a wall driving mechanism, wherein the shielding wall driving mechanism is provided in plurality, and the shielding wall driving mechanism includes a cam rotatably connected to the rotating shielding wall and a groove for sliding the cam. and a driving motor for rotating the rotating plate, wherein the rotating shaft of the driving motor is connected to the rotating plate so as not to rotate relatively, and the moving shaft of the cam extends through the groove characterized by being slidably engaged with the Thus, according to the shielding device of the present invention, by having a plurality of shielding wall driving mechanisms, the rotating shielding walls can be individually operated, and the degree of freedom of the opening and closing operation of the rotating shielding wall as a whole is improved. can do.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the external appearance of the refrigerator which concerns on embodiment of this invention. It is a side sectional view showing an internal configuration of a refrigerator concerning an embodiment of the present invention. Fig. 3 is an enlarged side cross-sectional view showing the structure around the cooling chamber of the refrigerator according to the embodiment of the present invention; FIG. 2 is a diagram showing a state in which the shielding device employed in the refrigerator according to the embodiment of the present invention is assembled, (A) is a perspective view, and (B) is a cross-sectional view seen from the section line AA. (C) is a diagram showing the air passage configuration as seen from the rear. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the shielding apparatus which concerns on embodiment of this invention, (A) is an exploded perspective view, (B) is an exploded sectional view. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the shielding apparatus which concerns on embodiment of this invention, (A) is an exploded perspective view which shows partially a shielding apparatus, (B) is a perspective view which shows a cam. It is a figure showing a shielding device concerning an embodiment of the present invention, (A) is a figure showing a rotation shielding wall of a shielding device seen from the back, and (B) shows the composition of a rotation plate seen from the back. It is a diagram. 1 is a diagram showing a fully closed state of a shielding device according to an embodiment of the present invention, where (A) is a diagram showing the shielding device as viewed from the rear, and (B) is a cross-section line BB of (A). It is sectional drawing of the shielding device which was seen, (C) is a figure which shows a rotating plate etc. from the front, (D) is a partial enlarged sectional view of (B). 1 is a diagram showing a fully opened state of a shielding device according to an embodiment of the present invention, where (A) is a diagram showing the shielding device as viewed from the rear, and (B) is a diagram viewed from the section line CC of (A). FIG. 4C is a cross-sectional view of the shielding device, in which (C) is a view showing the rotary plate and the like as viewed from the front, and (D) is a partially enlarged cross-sectional view of (B). FIG. 2A is a diagram showing a state in which cold air is supplied only to the lower freezer compartment in the shielding device according to the embodiment of the present invention, as viewed from the rear; FIG. It is a figure which shows. FIG. 10 is a rear view showing the state of the air passage when cold air is supplied only to the lower freezer compartment in the shielding device according to the embodiment of the present invention. FIG. 2 is a rear view of the shielding device according to the embodiment of the present invention, showing a state in which cold air is supplied only to the freezer compartment, FIG. FIG. 4 is a diagram showing; FIG. 10 is a rear view showing the state of the air passage when cool air is supplied only to the freezer compartment in the shielding device according to the embodiment of the present invention. FIG. 2A is a view showing the shielding device according to the embodiment of the present invention, showing a state in which cool air is supplied only to the upper freezer compartment, as viewed from the rear; FIG. It is a figure which shows. FIG. 10 is a rear view showing the state of the air passage when cold air is supplied only to the entire upper freezer compartment in the shielding device according to the embodiment of the present invention. FIG. 2A is a view showing the shielding device according to the embodiment of the present invention, showing a state in which cool air is not supplied, as viewed from the rear; FIG. . FIG. 6 is a rear view showing the state of the air passage when cold air is not supplied in the shielding device according to the embodiment of the present invention. FIG. 2A is a diagram showing a shielding device according to an embodiment of the present invention, showing a state in which cold air is supplied only to a refrigerator compartment, as viewed from the rear, FIG. FIG. 4 is a diagram showing; FIG. 10 is a rear view showing the state of the air passage when cold air is supplied only to the refrigerating compartment in the shielding device according to the embodiment of the present invention. FIG. 2A is a view showing the shielding device according to the embodiment of the present invention, showing how cold air is supplied to the upper freezing compartment and the refrigerating compartment, and FIG. It is a figure which shows a plate etc. FIG. 10 is a rear view showing the state of the air passages when cold air is supplied to the upper freezing compartment and the refrigerating compartment in the shielding device according to the embodiment of the present invention. FIG. 2A is a view showing the shielding device according to the embodiment of the present invention, showing a state in which cold air is supplied to the entire freezing compartment and the refrigerating compartment, and FIG. It is a figure which shows a plate etc. FIG. 6 is a rear view showing the state of the air passages when cool air is supplied to the entire freezing compartment and the refrigerating compartment in the shielding device according to the embodiment of the present invention. It is a figure which shows the shielding apparatus based on the other form of this invention, (A) is an exploded perspective view, (B) is an enlarged sectional view which shows a shielding wall drive mechanism. FIG. 10A is a view showing a fully closed state of a shielding device according to another embodiment of the present invention, FIG. It is sectional drawing of the shielding device which was seen, (C) is a figure which shows a rotating plate etc. from back, and (D) is a partial enlarged sectional view of (B). FIG. 10 is a diagram showing a fully open state of a shielding device according to another embodiment of the present invention, (A) is a diagram showing the shielding device as seen from the rear, and (B) is a view from the section line EE of (A). FIG. 4C is a cross-sectional view of the shielding device, in which (C) is a view showing the rotary plate and the like as seen from the rear, and (D) is a partially enlarged cross-sectional view of (B). FIG. 11 is a diagram showing a shielding device according to yet another embodiment of the invention; It is an expanded sectional view which shows the refrigerator based on background art. It is a perspective view which shows the fan cover employ|adopted by the refrigerator which concerns on background art.

Shielding device 70 and refrigerator 10 according to embodiments of the present invention will be described in detail below with reference to the drawings. In the following description, the same reference numerals are given to the same members in principle, and repeated descriptions will be omitted. Furthermore, in the following description, each direction of up, down, front, back, left, and right is appropriately used, and left and right indicate left and right when the refrigerator 10 is viewed from the rear. Furthermore, in the following description, the directions of rotation are expressed as clockwise and counterclockwise, and these directions indicate the direction when refrigerator 10 is viewed from the rear. Further, in the following description, the clockwise direction may be referred to as the forward direction, and the counterclockwise direction may be referred to as the reverse direction.

FIG. 1 is a front external view showing a schematic structure of a refrigerator 10 of this embodiment. As shown in FIG. 1, a refrigerator 10 has an insulating box body 11 as a main body, and the inside of this insulating box body 11 forms a storage chamber for storing food and the like. The storage compartments include a refrigerator compartment 15 at the top, an upper freezer compartment 18 at the bottom, a lower freezer compartment 19 at the bottom, and a vegetable compartment 20 at the bottom. Both the upper freezer compartment 18 and the lower freezer compartment 19 are storage compartments in the freezing temperature range, and may be collectively referred to as the freezer compartment 17 in the following description. Here, the upper freezer compartment 18 may be divided into left and right, and one side may be used as an ice making compartment.

The front surface of the heat insulating box 11 is open, and heat insulating doors 21 and the like are provided in openings corresponding to the respective storage compartments so as to be freely opened and closed. The heat-insulating door 21 divides the front surface of the refrigerating chamber 15 in the left-right direction and closes it. The heat insulating doors 23 , 24 , 25 are each integrally combined with the storage container and supported by the heat insulating box body 11 so as to be freely pulled out forward of the refrigerator 10 . Specifically, the heat insulation door 23 closes the upper freezer compartment 18 , the heat insulation door 24 closes the lower freezer compartment 19 , and the heat insulation door 25 closes the vegetable compartment 20 .

FIG. 2 is a side sectional view showing a schematic structure of the refrigerator 10. As shown in FIG. A heat insulating box body 11, which is a main body of a refrigerator 10, is composed of an outer box 12 made of steel plate with an open front surface and an inner box 13 made of synthetic resin with an open front surface and arranged with a gap in the outer box 12. - 特許庁It consists of A gap between the outer box 12 and the inner box 13 is filled with a heat insulating material 14 made of foamed polyurethane. It should be noted that each of the heat insulating doors 21 and the like described above also employs a heat insulating structure similar to that of the heat insulating box body 11 .

The refrigerator compartment 15 and the freezer compartment 17 positioned below it are partitioned by a heat insulating partition wall 42 . Cool air, which is cooled air, communicates freely between the upper freezer compartment 18 and the lower freezer compartment 19 provided therebelow. The freezer compartment 17 and the vegetable compartment 20 are separated by a heat insulating partition wall 43 .

A refrigerating chamber supply air passage 29 is formed on the rear surface of the refrigerating chamber 15 as a supply air passage for supplying cool air to the refrigerating chamber 15 , which is partitioned by a synthetic resin partition 65 . An air outlet 33 for supplying cool air to the refrigerating chamber 15 is formed in the refrigerating chamber supply air passage 29 .

A freezer compartment supply air passage 31 is formed on the far side of the freezer compartment 17 to flow cold air cooled by the cooler 45 to the freezer compartment 17 . A cooling chamber 26 is formed on the farther side of the freezer compartment supply air passage 31, and a cooler 45, which is an evaporator for cooling the air circulating inside the refrigerator, is arranged inside the cooling chamber 26. . The freezer compartment supply air passage 31 is a space surrounded by the front cover 67 and the partition 66 in the front-rear direction.

The cooler 45 is connected to the compressor 44, a radiator (not shown), and a capillary tube (not shown) as an expansion means through refrigerant pipes, and constitutes a vapor compression refrigeration cycle circuit.

FIG. 3 is a side cross-sectional view showing the structure around the cooling chamber 26 of the refrigerator 10. As shown in FIG. The cooling chamber 26 is provided inside the heat insulating box 11 and on the far side of the freezer compartment supply air passage 31 . The cooling chamber 26 and the freezing chamber 17 are separated by a synthetic resin partition 66 .

The freezer compartment supply air passage 31 formed in front of the cooling chamber 26 is a space formed between the cooling chamber 26 and a synthetic resin front cover 67 assembled in front thereof, and is cooled by the cooler 45. It becomes an air path for flowing cool air to the freezer compartment 17 . The front cover 67 is formed with a blowout port 34 that is an opening through which cold air is blown out to the freezer compartment 17 .

A return port 38 for returning air from the freezing chamber 17 to the cooling chamber 26 is formed in the lower back surface of the lower freezing chamber 19 . A return port 28 is formed in the lower part of the cooling chamber 26 to connect to the return port 38 and suck the return cold air from each storage chamber into the cooling chamber 26 . Cold air returning via the return port 39 ( FIG. 2 ) of the vegetable compartment 20 and the vegetable compartment return air passage 37 also flows into the return port 28 .

A defrosting heater 46 is provided below the cooler 45 as defrosting means for melting and removing frost adhering to the cooler 45 . The defrost heater 46 is an electric resistance heater.

At the top of the cooling chamber 26, a blower port 27, which is an opening leading to each storage chamber, is formed. Air blow port 27 is an opening through which cold air cooled by cooler 45 flows, and communicates cooling chamber 26 with refrigerating compartment supply air passage 29 and freezer compartment supply air passage 31 . A blower 47 is arranged in the blower port 27 to send out cold air from the front toward the freezer compartment 17 and the like. Further, since the function of the damper is performed by the rotating shielding wall 71 of the shielding device 70, which will be described later, the damper can be omitted.

Outside the blower port 27 of the cooling chamber 26 , a shielding device 70 is provided for appropriately blocking the air path leading from the blower port 27 . The shielding device 70 is covered with a front cover 67 from the front.

With reference to FIG. 4, a configuration in which the shielding device 70 for regulating the airflow path described above is assembled will be described. 4(A) is a perspective view showing the partition 66 with the shielding device 70 assembled, and FIG. 4(B) is a cross-sectional view taken along line AA in FIG. 4(C) is a view showing the air passage configuration when the front cover 67 is viewed from the rear.

Referring to FIG. 4A, the partition 66 is formed with a circular air blowing port 27 penetrating in the thickness direction at the upper portion thereof, and a blower 47 and a shielding device 70 are located in front of the air blowing port 27. are arranged. Here the shielding device 70 is hidden behind the partition 66 . An opening 59 formed on the upper end side of the partition 66 communicates with the refrigerating compartment supply air passage 29 shown in FIG.

Referring to FIG. 4B, as described above, freezer compartment supply air passage 31 is formed as a space surrounded by partition 66 and front cover 67 . As will be described later, the freezer compartment supply air passage 31 is divided into a plurality of air passages. A shielding device 70 and a shielding wall driving mechanism 60 are arranged between the partition 66 and the front cover 67 . The shielding device 70 shields the blower 47 , and the shielding wall driving mechanism 60 drives the shielding device 70 . The configurations of the shielding device 70 and the shielding wall driving mechanism 60 will be described later with reference to FIG. 5 and the like.

Referring to FIG. 4(C), a plurality of air passages are formed by partitioning the internal space of front cover 67 . Specifically, rib-shaped air passage partition walls 50 and 56 extending rearward from the rear main surface of the front cover 67 are formed. The rear ends of the air passage partition walls 50 and 56 are in contact with the partition body 66 shown in FIG. 4(B).

Here, the air passage for blowing cold air is divided into a refrigerating compartment supply air passage 51, an upper freezer compartment supply air passage 52, and a lower freezer compartment supply air passage 53 from above. Cold air blown to the refrigerator compartment 15 flows through the refrigerating compartment supply air passage 51, cold air blown to the upper freezer compartment 18 flows through the upper freezer compartment supply air passage 52, and cold air blown to the upper freezer compartment 18 flows through the lower freezer compartment supply air passage 53. Cool air blown to the chamber 19 is circulated. Cold air flowing through the refrigerating compartment supply air passage 51 is sent to the refrigerating compartment 15 shown in FIG. The cold air flowing through the upper freezer compartment supply air passage 52 is blown to the upper freezer compartment 18 shown in FIG. The cool air flowing through the lower freezer compartment supply air passage 53 is blown to the lower freezer compartment 19 shown in FIG. Refrigerator compartment supply air path 51 , upper freezer compartment supply air path 52 , and lower freezer compartment supply air path 53 are formed to extend around shielding device 70 .

The refrigerating compartment supply air passage 51 and the upper freezer compartment supply air passage 52 are separated by an air passage partition wall 50 . Furthermore, the upper freezer compartment supply air passage 52 and the lower freezer compartment supply air passage 53 are partitioned by an air passage partition wall 56 .

The configuration of the shielding device 70 will be described with reference to FIG. 5A is an exploded perspective view of the shielding device 70, and FIG. 5B is a side sectional view of the shielding device 70. FIG.

5A and 5B, the shielding device 70 includes a support base 63, a rotating shielding wall 71, and a shielding wall driving mechanism 60. As shown in FIG. The shielding device 70 is a device that shields the air path of the cool air blown by the blower 47 . By opening the shielding device 70, air passages connecting the cooling chamber 26 and each storage chamber are communicated, and by closing the shielding device 70, the air passages are blocked.

The blower 47 is arranged at the center of the support base 63 via fastening means such as screws. Although not shown here, the blower 47 includes, for example, a centrifugal fan such as a turbo fan and a blower motor that rotates the centrifugal fan, and blows cool air radially outward.

The support base 63 is an integrally molded member made of synthetic resin. Each rotation shielding wall 71 is rotatably arranged on the rear surface side of the support base 63 .

A side wall portion 58 is formed in the peripheral portion of the support base 63 . The side wall portion 58 is a portion extending rearward from the support base 63 . A plurality of side wall portions 58 are arranged at approximately equal intervals in the circumferential direction of the support base 63 . The side wall portion 58 is arranged between the rotation blocking walls 71 . The rear end of the side wall portion 58 is fastened to the partition body 66 shown in FIG. 4(B) via fastening means such as screws.

The rotation shielding wall 71 is a rectangular plate-like member made of synthetic resin, and has a long side along a tangent to the outer edge of the blower 47 . The rotation shielding wall 71 is attached near the periphery of the support base 63 so as to be rotatable rearward about an axis parallel to the main surface of the support base 63 . Further, a plurality (five in this embodiment) of the rotating shielding walls 71 are provided. The rotating shielding wall 71 is arranged in a path along which cold air blown by the blower 47 flows, and shields the air passage.

The shielding wall drive mechanism 60 has a cam 61 , a rotating plate 73 , and a drive motor 74 that rotates the rotating plate 73 . Here, each rotating shielding wall 71 is provided with a shielding wall drive mechanism 60 . That is, five shielding wall driving mechanisms 60 are arranged for five rotating shielding walls 71 . By adopting such a configuration, each shielding wall driving mechanism 60 rotates the rotating shielding wall 71 based on an instruction from a control device (not shown), thereby varying the rotation pattern of the rotating shielding wall 71. It can be implemented without limits. A specific shape and function of the shielding wall driving mechanism 60 will be described later.

A shielding wall drive mechanism 60 for driving the rotating shielding wall 71 will be described with reference to FIG. 6A is an exploded perspective view showing the shielding wall driving mechanism 60, and FIG. 6B is a perspective view showing the cam 61. FIG.

Referring to FIG. 6A, the shielding wall drive mechanism 60 includes a cam 61, a rotating plate 73 with which a moving shaft 76 of the cam 61 is engaged, and a drive motor 74 that rotates the rotating plate 73. there is

The cam 61 is a flat rectangular parallelepiped member made of synthetic resin. As shown in FIG. 6B, the right end of the cam 61 is formed with a rotary connecting portion 48 having a hole through which the pin 55 can be inserted. The cam 61 is housed in a slidable state in a cam housing portion formed by forming a concave front surface of the support base 63 shown in FIG. 5(A).

The rotary plate 73 is a plate-like member having a substantially tongue shape, and the left end thereof is connected to the rotary shaft of the drive motor 74 so as not to rotate relative to it. Therefore, the rotary plate 73 is rotated by the driving motor 74 . A moving shaft slide groove 80 for moving the moving shaft 76 of the cam 61 is formed on the right side of the rotating plate 73 . The moving shaft slide groove 80 has an arched shape, and the moving shaft 76 of the cam 61 is slidably engaged with the moving shaft slide groove 80 .

The rotation shielding wall 71 is formed with a rotation connecting portion 68 projecting obliquely from the base end portion of the rotation shielding wall 71 . A hole through which the pin 55 can be inserted is formed in the rotary connecting portion 68 . Rotating connecting portions 64 are formed near both ends of the side edges of the rotating shielding wall 71 . A hole through which the pin 69 can be inserted is formed in the rotary connecting portion 64 .

As shown in FIG. 6B, the moving shaft 76 is a columnar projection projecting from the front surface of the cam 61 . The diameter of the moving shaft 76 is slightly smaller than the width of the moving shaft slide groove 80 formed in the rotary plate 73 . The moving shaft 76 is slidably engaged with the moving shaft slide groove 80 .

Referring to FIG. 6A again, the pin 55 is inserted through the hole of the rotary connecting portion 48 of the cam 61 and the hole of the rotary connecting portion 68 of the rotary shielding wall 71 so that the cam 61 and the rotation shielding wall 71 are connected so as to be rotatable around the pin 55 . Further, the rotation shielding wall 71 is rotatably connected to the support base 63 shown in FIG.

With such a configuration, as shown in FIG. 6A, by rotating the moving shaft slide groove 80 with the driving motor 74, the opening and closing operation of the rotation shielding wall 71 can be performed. Specifically, when the drive motor 74 rotates the rotating plate 73, the moving shaft 76 moves in the horizontal direction along the moving shaft slide groove 80, that is, the cam 61 moves in the horizontal direction. As the cam 61 moves, the rotation shielding wall 71 rotatably connected to the cam 61 rotates about the rotation connecting portion 64 to open and close.

Here, as shown in FIG. 4B, each member constituting the shielding wall drive mechanism 60 is not exposed to the freezer compartment supply air passage 31 through which cold air flows. Therefore, since cold air is not blown to the shielding wall drive mechanism 60, it is possible to prevent the shielding wall drive mechanism 60 from freezing.

7A and 7B are diagrams showing a shielding device 70 according to an embodiment of the present invention, FIG. 7A is a diagram showing a rotating shielding wall 711 and the like of the shielding device 70 as viewed from the rear, and FIG. [FIG. 2] is a diagram showing the configuration of a rotating plate as viewed from the front;

Referring to FIG. 7A, shielding device 70 has rotating shielding walls 711, 712, 713, 714, and 715 as rotating shielding wall 71 described above. The rotation shielding wall 711 through the rotation shielding wall 715 have a rectangular shape with long sides substantially parallel to the tangent line of the outer edge of the blower 47 shown in FIG. 5(A). Also, the rotation shielding wall 711 to the rotation shielding wall 715 are rotatably attached to the peripheral portion of the support base 63 shown in FIG. 5(A).

A radially inner end of the rotation shielding wall 711 is rotatably connected to a cam 611 having a movement shaft 761 formed thereon. Similarly, the radially inner end of the rotation blocking wall 712 is rotatably connected to a cam 612 having a movement shaft 762 formed thereon. A radially inner end portion of the rotation shielding wall 713 is rotatably connected to a cam 613 on which a movement shaft 763 is formed. Also, the radially inner end of the rotation shielding wall 714 is rotatably connected to a cam 614 on which a movement shaft 764 is formed. A radially inner end of the rotation shielding wall 715 is rotatably connected to a cam 615 on which a movement shaft 765 is formed.

The cams 611 through 615 are rotatably connected to the inner sides of the rotation shielding walls 711 through 715, respectively. As a result, the cams 611 through 615 are arranged on the outer side, so that the rotation shielding walls 711 through 715 are in an upright state. On the other hand, by arranging the cams 612 through 615 on the inner side, the rotation shielding walls 712 through 715 are in a lying state.

Referring to FIG. 7B, a movement shaft 761 of cam 611 is slidably engaged with movement shaft slide groove 801 of rotary plate 731 . The movement shaft 762 of the cam 612 is slidably engaged with the movement shaft slide groove 802 of the rotary plate 732 . The movement shaft 763 of the cam 613 is slidably engaged with the movement shaft slide groove 803 of the rotary plate 733 . The movement shaft 764 of the cam 614 is slidably engaged with the movement shaft slide groove 804 of the rotary plate 734 . The movement shaft 765 of the cam 615 is slidably engaged with the movement shaft slide groove 805 of the rotary plate 735 . With such a configuration, by rotating the rotary plates 731 through 735, the cams 611 through 615 can be slid in predetermined directions, and the rotation shielding walls 711 through 715 can be opened and closed.

FIG. 8 shows the configuration of the shielding device 70 in the fully closed state. 8(A) is a rear view of the shielding device 70 in a fully closed state, and FIG. 8(B) is a sectional view taken along line BB in FIG. 8(A). (C) is a front view of the rotary plate 73 and the like in the fully closed state, and FIG. 8(D) is an enlarged view of key points of FIG. 8(B). Here, the fully closed state is a state in which the periphery of the blower 47 is shielded by the rotating shielding wall 71, thereby closing the blower port 27 shown in FIG. Also, in this fully closed state, the blower 47 does not rotate.

Referring to FIG. 8A, shielding device 70 prevents air from flowing out from blower 47 in the fully closed state. That is, in the fully closed state, all of the rotating shielding walls 71 are in an upright state, communication with the air passage for supplying cool air is cut off, and cold air is not supplied to the refrigerator compartment 15 and the freezer compartment 17 . Also, during the defrosting process of defrosting the cooler 45 shown in FIG.

Referring to FIG. 8B, in the fully closed state, the turn shielding wall 71 is in a closed state in which it stands substantially perpendicular to the main surface of the support base 63 . Here, all the rotating shielding walls 71 of the shielding device 70 are closed. In this state, the rear end of the rotating shielding wall 71 is in contact with the partition 66 shown in FIG. By doing so, it is possible to improve the airtightness when the air passage is closed by the rotating shielding wall 71 .

Referring to FIG. 8C, when the shielding device 70 is brought into the fully closed state, first, the drive motor 74 is driven to rotate the rotating plate 73 . Here, by rotating the rotating plate 73 counterclockwise, the moving shaft 76 slides in the moving shaft slide groove 80 and the moving shaft 76 is arranged at the outer end of the moving shaft slide groove 80 . As a result, as shown in FIG. 8(D), the cam 61 moves radially outward. The rotation shielding wall 71 rotatably connected to the cam 61 rotates about the vicinity of the rotation connecting portion 68 as the center of rotation, and stands substantially perpendicular to the main surface of the support base 63 in a closed state. becomes.

FIG. 9 shows the configuration of the shielding device 70 in the fully open state. FIG. 9(A) is a rear view of the shielding device 70 in a fully open state, and FIG. 9(B) is a cross-sectional view taken along line CC of FIG. 9(A). C) is a front view of the rotary plate 73 and the like in a fully opened state, and FIG. 9D is an enlarged view of key points in FIG. 9B. Here, the fully open state is a state in which the rotary shielding wall 71 does not block the communication with the air passage that supplies cold air around the fan 47, so that the cool air blown by the fan 47 spreads around.

Referring to FIG. 9A, shielding device 70 does not block the flow of air from blower 47 to the outside in the fully open state. That is, in the fully open state, cold air blown from the blower 47 to the shielding device 70 is blown to the refrigerator compartment 15 and the freezer compartment 17 without being interfered by the rotating shielding wall 71 . As shown in FIG. 9(A), in the fully opened state, all of the rotary shielding walls 71 are in a recumbent state in which they are laid down radially outward.

Referring to FIG. 9(B), in the fully open state, all of the rotating shielding walls 71 lie substantially parallel to the main surface of the support base 63 . Since all the rotating shielding walls 71 of the shielding device 70 are in the open state, the rotating shielding walls 71 do not exist in the air path blown from the blower 47, and the flow path resistance of the air path is reduced. 47 air flow rate can be increased.

Referring to FIG. 9(C), when shielding device 70 is to be fully opened, drive motor 74 is driven to rotate rotating plate 73 clockwise so that moving shaft 76 moves along moving shaft slide groove 80. Slide inside. As a result, the moving shaft 76 moves to the inner end of the moving shaft slide groove 80 . When this happens, the cam 61 moves radially inward as shown in FIG. 9(D). As a result, the rotation shielding wall 71 rotatably connected to the end of the cam 61 rotates about the vicinity of the rotation connecting portion 68 and falls down, and the main surface of the rotation shielding wall 71 falls. , are substantially parallel to the main surface of the support base 63 .

10 to 23, a method of switching air paths using the shielding device 70 having the configuration described above will be described.

FIG. 10 shows a state in which cold air is supplied only to the lower freezer compartment 19. FIG. 10(A) is a view of the shielding device 70 viewed from the rear, and FIG. It is a diagram. FIG. 11 is a rear view of the air passage when cold air is supplied only to the lower freezer compartment 19 . 12A and 12B show the supply of cold air only to the freezer compartment 17, FIG. 12A is a view of the shielding device 70 viewed from the rear, and FIG. It is a diagram. FIG. 13 is a rear view of the air passage when cold air is supplied only to the freezer compartment 17. As shown in FIG. FIG. 14 shows a state in which cool air is supplied only to the upper freezer compartment 18. FIG. 14(A) is a view of the shielding device 70 viewed from the rear, and FIG. It is a diagram. FIG. 15 is a rear view of the air passage when cold air is supplied only to the upper freezer compartment 18 . 16A and 16B show a state in which cool air is not supplied, FIG. 16A is a view of the shielding device 70 viewed from the rear, and FIG. 16B is a view of the rotary plate 731 and the like viewed from the front. FIG. 17 is a rear view of the air passage when cold air is not supplied.

FIG. 18 shows a state in which cold air is supplied only to the refrigerator compartment 15. FIG. 18(A) is a view of the shielding device 70 viewed from the rear, and FIG. 18(B) is a view of the rotating plate 731 and the like viewed from the front. It is a diagram. FIG. 19 is a rear view of the air passage when cold air is supplied only to the refrigerating compartment 15. As shown in FIG. FIG. 20 shows how cold air is supplied to the upper freezing compartment 18 and the refrigerating compartment 15. FIG. 20(A) is a rear view of the shielding device 70, and FIG. It is the figure seen from the front. FIG. 21 is a rear view of the air passages when cool air is supplied to the upper freezing compartment 18 and the refrigerating compartment 15 . FIG. 22 shows the state of supplying cool air to the entire freezing compartment 17 and the refrigerating compartment 15, FIG. It is the figure seen from the front. FIG. 23 is a rear view of air passages for supplying cold air to the entire freezer compartment 17 and the refrigerator compartment 15. FIG.

In the figures below, the clockwise direction when viewing the shielding device 70 from the rear is called the "forward direction", and the counterclockwise direction is called the "reverse direction". Further, in the following description, the radial and circumferential directions of blower 47 are simply referred to as radial and circumferential directions.

10 and 11 show how cold air is supplied to the lower freezer compartment 19. FIG. FIG. 10(A) is a rear view of the shielding device 70 in this state, and FIG. 10(B) is a front view of the rotating plate 731, etc. in this state. is a view of the air passage in this state as seen from the rear.

Referring to FIG. 10A, when cold air is supplied only to the lower freezer compartment 19, the rotation shielding wall 711, the rotation shielding wall 712, and the rotation shielding wall 715 are closed, and the rotation shielding walls are closed. 713 and rotating shielding wall 714 are in an open state. With such an open/closed state, the blower 47 can blow cool air only to the lower freezer compartment 19 .

Referring to FIG. 10B, drive motor 741 rotates rotating plate 731 in the opposite direction, so that moving shaft 761 is arranged at the radially outer end of moving shaft slide groove 801 of rotating plate 731 . The driving motor 742 rotates the rotating plate 732 in the opposite direction so that the moving shaft 762 is arranged at the radially outer end of the moving shaft slide groove 802 of the rotating plate 732 . The driving motor 743 rotates the rotating plate 733 forward, so that the moving shaft 763 is arranged at the radially inner end of the moving shaft slide groove 803 of the rotating plate 733 . Drive motor 744 rotates rotating plate 734 in the forward direction such that moving shaft 764 is positioned at the radially inner end of moving shaft slide groove 804 of rotating plate 734 . The drive motor 745 rotates the rotating plate 735 in the opposite direction so that the moving shaft 765 is arranged at the radially outer end of the moving shaft slide groove 805 of the rotating plate 735 .

By arranging the cam 611 radially outward together with the moving shaft 761, the rotation shielding wall 711 is closed. By arranging the cam 612 radially outward together with the moving shaft 762, the rotation shielding wall 712 is closed. By arranging the cam 613 radially inward together with the moving shaft 763, the rotation shielding wall 713 is opened. By arranging the cam 614 radially inward together with the moving shaft 764, the rotation blocking wall 714 is opened. By arranging the cam 615 radially outward together with the moving shaft 765, the rotation blocking wall 715 is closed.

Referring to FIG. 11, when shielding device 70 is in the state shown in FIG. 10, rotating shielding walls 713 and 714 are opened, so cold air is sent to lower freezer compartment supply air passage 53 . The cool air that has flowed through the lower freezer compartment supply air passage 53 is blown out to the lower freezer compartment 19 shown in FIG. On the other hand, since the rotating shielding walls 711, 712, 715 are closed, cold air is not blown to the refrigerator compartment 15 and the upper freezer compartment 18 shown in FIG.

12 and 13 show a state in which cool air is supplied only to the freezer compartment 17. FIG. FIG. 12(A) is a rear view of the shielding device 70 in this state, and FIG. 12(B) is a front view of the rotary plate 731 and the like in this state. is a view of the air passage in this state as seen from the rear.

Referring to FIG. 12A, when cool air is supplied only to freezer compartment 17, turn shielding wall 711 is closed, and turn shielding walls 712, 713, 714, 715 are open. With such an open/closed state, the blower 47 can blow cool air to the freezer compartment 17 shown in FIG.

Referring to FIG. 12B, drive motor 741 rotates rotating plate 731 in the opposite direction, so that moving shaft 761 is arranged at the radially outer end of moving shaft slide groove 801 of rotating plate 731 . The driving motor 742 rotates the rotating plate 732 forward, so that the moving shaft 762 is arranged at the radial inner end of the moving shaft slide groove 802 of the rotating plate 732 . The driving motor 743 rotates the rotating plate 733 forward, so that the moving shaft 763 is arranged at the radially inner end of the moving shaft slide groove 803 of the rotating plate 733 . Drive motor 744 rotates rotating plate 734 in the forward direction such that moving shaft 764 is positioned at the radially inner end of moving shaft slide groove 804 of rotating plate 734 . The driving motor 745 rotates the rotating plate 735 in the forward direction so that the moving shaft 765 is arranged at the radially inner end of the moving shaft slide groove 805 of the rotating plate 735 .

By arranging the cam 611 radially outward together with the moving shaft 761, the rotation shielding wall 711 is closed. By arranging the cam 612 radially inward together with the moving shaft 762, the rotation shielding wall 712 is opened. By arranging the cam 613 radially inward together with the moving shaft 763, the rotation shielding wall 713 is opened. By arranging the cam 614 radially inward together with the moving shaft 764, the rotation blocking wall 714 is opened. By arranging the cam 615 radially inward together with the moving shaft 765, the rotation shielding wall 715 is opened.

13, when the shielding device 70 is in the state shown in FIG. 12, the rotating shielding walls 712 and 715 are opened, so that cool air is sent to the upper freezer compartment supply air passage 52, and the outlet 34 into the upper freezer compartment 18 shown in FIG. In addition, since the rotating shielding walls 713 and 714 are opened, cold air is blown to the lower freezer compartment supply air passage 53 and blown out to the lower freezer compartment 19 shown in FIG. On the other hand, since the rotating shielding wall 711 is closed, cold air is not blown into the refrigerator compartment 15 .

14 and 15 show a state in which cool air is supplied only to the upper freezer compartment 18. FIG. FIG. 14A is a rear view of the shielding device 70 in this state, and FIG. 14B is a front view of the rotary plate 731 and the like in this state. is a view of the air passage in this state as seen from the rear.

Referring to FIG. 14A, when cold air is supplied only to upper freezer compartment 18 shown in FIG. It is open. With such an open/closed state, the blower 47 can blow cold air only to the upper freezer compartment 18 .

Referring to FIG. 14B, drive motor 741 rotates rotating plate 731 in the opposite direction, so that moving shaft 761 is arranged at the radially outer end of moving shaft slide groove 801 of rotating plate 731 . The driving motor 742 rotates the rotating plate 732 forward, so that the moving shaft 762 is arranged at the radial inner end of the moving shaft slide groove 802 of the rotating plate 732 . The driving motor 743 rotates the rotating plate 733 in the opposite direction, so that the moving shaft 763 is arranged at the radially outer end of the moving shaft slide groove 803 of the rotating plate 733 . The drive motor 744 rotates the rotating plate 734 in the opposite direction so that the moving shaft 764 is positioned at the radially outer end of the moving shaft slide groove 804 of the rotating plate 734 . The driving motor 745 rotates the rotating plate 735 in the forward direction so that the moving shaft 765 is arranged at the radially inner end of the moving shaft slide groove 805 of the rotating plate 735 .

By arranging the cam 611 radially outward together with the moving shaft 761, the rotation shielding wall 711 is closed. By arranging the cam 612 radially inward together with the moving shaft 762, the rotation shielding wall 712 is opened. By arranging the cam 613 radially outward together with the moving shaft 763, the rotation blocking wall 713 is closed. The rotation blocking wall 714 is closed by arranging the cam 614 radially outward together with the moving shaft 764 . By arranging the cam 615 radially inward together with the moving shaft 765, the rotation shielding wall 715 is opened.

15, when the shielding device 70 is in the state shown in FIG. 14, the rotating shielding walls 712 and 715 are opened, and the cold air is blown to the upper freezer compartment supply air passage 52, and the outlet 34 into the upper freezer compartment 18 .

On the other hand, since the rotating shielding wall 711 is closed, cold air is not blown into the refrigerator compartment 15 . Further, since the rotating shielding walls 713 and 714 are also closed, cold air is not blown to the lower freezer compartment 19 .

16 and 17 show the fully closed state in which the shielding device 70 closes all air paths. FIG. 16(A) is a rear view of the shielding device 70 in this state, and FIG. 16(B) is a front view of the rotary plate 731 and the like in this state. is a view of the air passage in this state as seen from the rear.

Referring to FIG. 16A, in the fully closed state, rotation shielding wall 711 to rotation shielding wall 715 are closed. By setting it as the state which concerns, it can prevent that air flows into each air path.

Referring to FIG. 16B, drive motor 741 rotates rotating plate 731 in the opposite direction, so that moving shaft 761 is arranged at the radially outer end of moving shaft slide groove 801 of rotating plate 731 . The driving motor 742 rotates the rotating plate 732 in the opposite direction so that the moving shaft 762 is arranged at the radially outer end of the moving shaft slide groove 802 of the rotating plate 732 . The driving motor 743 rotates the rotating plate 733 in the opposite direction, so that the moving shaft 763 is arranged at the radially outer end of the moving shaft slide groove 803 of the rotating plate 733 . The drive motor 744 rotates the rotating plate 734 in the opposite direction so that the moving shaft 764 is positioned at the radially outer end of the moving shaft slide groove 804 of the rotating plate 734 . The drive motor 745 rotates the rotating plate 735 in the opposite direction so that the moving shaft 765 is arranged at the radially outer end of the moving shaft slide groove 805 of the rotating plate 735 .

By arranging the cam 611 radially outward together with the moving shaft 761, the rotation shielding wall 711 is closed. By arranging the cam 612 radially outward together with the moving shaft 762, the rotation shielding wall 712 is closed. By arranging the cam 613 radially outward together with the moving shaft 763, the rotation blocking wall 713 is closed. The rotation blocking wall 714 is closed by arranging the cam 614 radially outward together with the moving shaft 764 . By arranging the cam 615 radially outward together with the moving shaft 765, the rotation blocking wall 715 is closed.

Referring to FIG. 17, when shielding device 70 is in the state shown in FIG. 16, rotating shielding walls 711-715 are closed and no air is supplied to any of the storage chambers. In other words, the cooling chamber 26 and each air passage can be shielded by the rotating shielding wall 71 . Therefore, when the inside of the cooling chamber 26 is warmed in the defrosting process, it is possible to prevent the warm air inside the cooling chamber 26 from leaking into each storage chamber via each air passage.

18 and 19 show a state in which cold air is supplied only to the refrigerator compartment 15. FIG. FIG. 18(A) is a rear view of the shielding device 70 in this state, and FIG. 18(B) is a front view of the rotary plate 731, etc. in this state. is a view of the air passage in this state as seen from the rear.

Referring to FIG. 18A, when cool air is supplied only to refrigerator compartment 15, rotation shielding wall 711 is in an open state, and rotation shielding walls 712 to 715 are in a closed state. With such an open/closed state, cold air can be blown only to the refrigerating compartment 15 by the blower 47 as will be described later.

Referring to FIG. 18B, drive motor 741 rotates rotating plate 731 in the forward direction, so that moving shaft 761 is arranged at the radial inner end of moving shaft slide groove 801 of rotating plate 731 . The driving motor 742 rotates the rotating plate 732 in the opposite direction so that the moving shaft 762 is arranged at the radially outer end of the moving shaft slide groove 802 of the rotating plate 732 . The driving motor 743 rotates the rotating plate 733 in the opposite direction, so that the moving shaft 763 is arranged at the radially outer end of the moving shaft slide groove 803 of the rotating plate 733 . The drive motor 744 rotates the rotating plate 734 in the opposite direction so that the moving shaft 764 is positioned at the radially outer end of the moving shaft slide groove 804 of the rotating plate 734 . The drive motor 745 rotates the rotating plate 735 in the opposite direction so that the moving shaft 765 is arranged at the radially outer end of the moving shaft slide groove 805 of the rotating plate 735 .

By arranging the cam 611 radially inward together with the moving shaft 761, the rotation shielding wall 711 is opened. By arranging the cam 612 radially outward together with the moving shaft 762, the rotation shielding wall 712 is closed. By arranging the cam 613 radially outward together with the moving shaft 763, the rotation blocking wall 713 is closed. The rotation blocking wall 714 is closed by arranging the cam 614 radially outward together with the moving shaft 764 . By arranging the cam 615 radially outward together with the moving shaft 765, the rotation blocking wall 715 is closed.

Referring to FIG. 19, when the shielding device 70 is in the state shown in FIG. 18, the rotating shielding wall 711 is opened, and cold air is sent to the refrigerating compartment supply air passage 51. 29 into the refrigerator compartment 15 . Also, part of the cool air blown to the refrigerator compartment 15 can be blown to the vegetable compartment 20 . On the other hand, since the rotating shielding walls 712 to 715 are closed, cold air is not blown into the freezer compartment 17 .

20 and 21 show a state in which the shielding device 70 supplies cold air to the refrigerator compartment 15 and the upper freezer compartment 18. FIG. FIG. 20(A) is a rear view of the shielding device 70 in this state, and FIG. 20(B) is a front view of the rotating plate 731 etc. in this state. is a view of the air passage in this state as seen from the rear.

Referring to FIG. 20A, when cold air is supplied to refrigerator compartment 15 and upper freezer compartment 18 shown in FIG. , 714 are closed. With such an open/closed state, the blower 47 can blow cold air to the refrigerator compartment 15 and the upper freezer compartment 18 .

Referring to FIG. 20B, drive motor 741 rotates rotating plate 731 in the forward direction, so that moving shaft 761 is arranged at the radially inner end of moving shaft slide groove 801 of rotating plate 731 . The driving motor 742 rotates the rotating plate 732 forward, so that the moving shaft 762 is arranged at the radial inner end of the moving shaft slide groove 802 of the rotating plate 732 . The driving motor 743 rotates the rotating plate 733 in the opposite direction, so that the moving shaft 763 is arranged at the radially outer end of the moving shaft slide groove 803 of the rotating plate 733 . The drive motor 744 rotates the rotating plate 734 in the opposite direction so that the moving shaft 764 is positioned at the radially outer end of the moving shaft slide groove 804 of the rotating plate 734 . The driving motor 745 rotates the rotating plate 735 in the forward direction so that the moving shaft 765 is arranged at the radially inner end of the moving shaft slide groove 805 of the rotating plate 735 .

By arranging the cam 611 radially inward together with the moving shaft 761, the rotation shielding wall 711 is opened. By arranging the cam 612 radially inward together with the moving shaft 762, the rotation shielding wall 712 is opened. By arranging the cam 613 radially outward together with the moving shaft 763, the rotation blocking wall 713 is closed. The rotation blocking wall 714 is closed by arranging the cam 614 radially outward together with the moving shaft 764 . By arranging the cam 615 radially inward together with the moving shaft 765, the rotation shielding wall 715 is opened.

Referring to FIG. 21, when the shielding device 70 is in the state shown in FIG. 20, the rotating shielding wall 711 is opened, and cold air is blown to the refrigerator compartment 15 through the refrigerator compartment supply air passage 29. be. In addition, since the rotating shielding walls 712 and 715 are opened, cold air is blown to the upper freezer compartment supply air passage 52 and blown out to the upper freezer compartment 18 via the outlet 34 . On the other hand, since the rotating shielding walls 713 to 714 are closed, cold air is not blown to the lower freezer compartment 19 .

22 and 23 show the fully open state in which cool air is supplied to both refrigerating compartment 15 and freezing compartment 17. FIG. FIG. 22(A) is a rear view of the shielding device 70 in this state, and FIG. 22(B) is a front view of the rotating plate 731 and the like in this state. is a view of the air passage in this state as seen from the rear.

Referring to FIG. 22(A), when cold air is supplied to refrigerator compartment 15 and freezer compartment 17 shown in FIG. With such a fully opened state, as will be described later, the blower 47 can blow cool air to the refrigerating compartment 15 and the freezing compartment 17 .

Referring to FIG. 22B, drive motor 741 rotates rotating plate 731 in the forward direction, so that moving shaft 761 is arranged at the radially inner end of moving shaft slide groove 801 of rotating plate 731 . The driving motor 742 rotates the rotating plate 732 forward, so that the moving shaft 762 is arranged at the radial inner end of the moving shaft slide groove 802 of the rotating plate 732 . The driving motor 743 rotates the rotating plate 733 forward, so that the moving shaft 763 is arranged at the radially inner end of the moving shaft slide groove 803 of the rotating plate 733 . Drive motor 744 rotates rotating plate 734 in the forward direction such that moving shaft 764 is positioned at the radially inner end of moving shaft slide groove 804 of rotating plate 734 . The driving motor 745 rotates the rotating plate 735 in the forward direction so that the moving shaft 765 is arranged at the radially inner end of the moving shaft slide groove 805 of the rotating plate 735 .

By arranging the cam 611 radially inward together with the moving shaft 761, the rotation shielding wall 711 is opened. By arranging the cam 612 radially inward together with the moving shaft 762, the rotation shielding wall 712 is opened. By arranging the cam 613 radially inward together with the moving shaft 763, the rotation shielding wall 713 is opened. By arranging the cam 614 radially inward together with the moving shaft 764, the rotation blocking wall 714 is opened. By arranging the cam 615 radially inward together with the moving shaft 765, the rotation shielding wall 715 is opened.

Referring to FIG. 23, when the shielding device 70 is in the state shown in FIG. 22, the rotating shielding wall 711 is opened, and cold air is sent to the refrigerating compartment supply air passage 51. Cold air is blown out to the refrigerator compartment 15 via 29 . In addition, since the rotating shielding walls 712 and 715 are opened, cold air is blown to the upper freezer compartment supply air passage 52 and blown out to the upper freezer compartment 18 via the outlet 34 . Furthermore, by opening the rotating shielding walls 713 and 714 , cool air can be supplied to the lower freezer compartment 19 via the lower freezer compartment supply air passage 53 and the air outlet 34 .

As described above, the shielding device 70 according to this embodiment rotates the rotary plates 731 through 735 individually by the drive motors 741 through 745 shown in FIG. A) can be opened and closed by individually rotating the rotation shielding wall 711 to the rotation shielding wall 715 shown in FIG. Therefore, since the rotation movement of the rotation shielding wall 711 or the rotation shielding wall 715 can be freely controlled, cold air can be generated according to the internal temperatures of the refrigerator compartment 15, the freezer compartment 17 and the vegetable compartment 20 shown in FIG. The amount of air blown can be precisely controlled.

Furthermore, referring to FIG. 3, since the volume occupied by the shielding device 70 can be reduced, the internal volume of the freezer compartment 17 formed in front of the shielding device 70 can be increased to accommodate more items to be frozen. can be stored in the freezer compartment 17.

A shielding device 70 according to another embodiment will be described with reference to FIGS. 24 to 26. FIG. The configuration of the shielding device 70 described with reference to these figures is basically the same as the shielding device 70 described with reference to FIGS. Since the difference is that they are provided with, this point will be mainly described.

A configuration of a shielding device 70 according to another embodiment will be described with reference to FIG. 24 . 24A is an exploded perspective view of the shielding device 70, and FIG. 24B is a sectional view showing the shielding wall drive mechanism 60. FIG.

Referring to FIG. 24A, shielding device 70 has fan 47, rotating shielding wall 71, support base 63, and shielding wall driving mechanism 60 from the rear side. Here, the shielding wall driving mechanism 60 is arranged corresponding to each rotating shielding wall 71 . The shielding device 70 shown in FIG.

Referring to FIG. 24B, the shielding wall drive mechanism 60 has a cam 61 formed with a contact portion 82 and a solenoid 81 .

The cam 61 is made of integrally molded synthetic resin or the like, and the upper end of the cam 61 is rotatably connected to the rotation blocking wall 71 . A contact portion 82 projecting forward is formed in the lower portion of the cam 61 . The configuration in which the cam 61 and the rotation shielding wall 71 are rotatably connected is as shown in FIG. 6(A).

A movable portion 87 is formed downward from the lower end of the solenoid 81 . A lower end of the movable portion 87 of the solenoid 81 is connected to the contact portion 82 of the cam 61 . When the solenoid 81 is energized, the movable portion 87 is arranged upward, and when the solenoid 81 is not energized, the movable portion 87 is arranged downward.

By controlling the energization or non-energization of the solenoid 81 by the shielding wall drive mechanism 60 having such a configuration, the cam 61 is moved to rotate the rotation shielding wall 71, and the rotation shielding wall 71 can be opened and closed. .

FIG. 25 shows the construction of the shielding device 70 in the fully closed state. FIG. 25(A) is a rear view of the shielding device 70 in a fully closed state, and FIG. 25(B) is a cross-sectional view taken along line DD in FIG. (C) is a front view of the solenoid 81 and the like in the fully closed state, and FIG. 25(D) is an enlarged view of key points in FIG. 25(B).

25(A) and 25(B), shielding device 70 prevents air from flowing out from blower 47 in the fully closed state. In this fully closed state, the turn shielding wall 71 is in a closed state in which it stands substantially perpendicular to the main surface of the support base 63 . Here, all the rotating shielding walls 71 of the shielding device 70 are closed.

Referring to FIG. 25(C), when the shielding device 70 is brought into the fully closed state, first, the solenoid 81 is driven to move the movable portion 87 radially outward. As a result, as shown in FIG. 25(D), the cam 61, which is connected to the movable portion 87 of the solenoid 81 via the contact portion 82, moves radially outward. On the paper, the cam 61 moves upward. The rotation shielding wall 71 rotatably connected to the cam 61 rotates about the vicinity of the rotation connecting portion 68 as the center of rotation, and stands substantially perpendicular to the main surface of the support base 63 in a closed state. becomes.

FIG. 26 shows the configuration of the shielding device 70 in the fully open state. FIG. 26(A) is a rear view of the shielding device 70 in a fully open state, and FIG. 26(B) is a cross-sectional view taken along line EE in FIG. C) is a front view of the solenoid 81 and the like in a fully open state, and FIG. 26(D) is an enlarged view of key points in FIG. 26(B).

26(A) and 26(B), shielding device 70 does not block the flow of air from blower 47 to the outside in the fully open state. Further, in the fully open state, all of the rotating shielding walls 71 are lying substantially parallel to the main surface of the support base 63 .

Referring to FIG. 26(C), when shielding device 70 is to be fully opened, solenoid 81 is driven to project movable portion 87 . As a result, as shown in FIG. 26D, the movable portion 87 presses the contact portion 82, and the cam 61 moves radially inward. As a result, the rotation shielding wall 71 rotatably connected to the end of the cam 61 rotates about the vicinity of the rotation connecting portion 68 and falls down, and the main surface of the rotation shielding wall 71 falls. , are substantially parallel to the main surface of the support base 63 .

As described above, even when the shielding wall driving mechanism 60 has the solenoid 81 as the driving source, the effect equivalent to the case of having the driving motor 74 as the driving source of the shielding wall driving mechanism 60 can be obtained. can play. That is, it is possible to individually control the opening and closing of each of the rotating shielding walls 71, increase the degree of freedom in controlling the opening and closing of the air passage, and adjust the internal temperature of the storage with high accuracy.

A configuration of a shielding device 70 according to still another embodiment will be described with reference to FIG. 27 . In the shielding device 70 described above, for example, as shown in FIG. On the other hand, in the shielding device 70 shown in FIG. 27, the opening and closing operations of the rotating shielding walls 711 to 714 are driven by the shielding wall driving mechanism 601 and the shielding wall driving mechanism 602 . That is, the opening and closing operations of the four rotating shielding walls 711 to 714 are driven by two shielding wall drive mechanisms 601 and 602 . Here, the inner side edges of the rotation shielding wall 711 to the rotation shielding wall 714 are rotatably attached to the support base 63 shown in FIG. 26(A) and the like.

The shielding wall drive mechanism 601 has a winding portion 851 , a drive motor 741 , wires 861 and 862 . The drive motor 741 rotates the substantially bar-shaped winding portion 851 in the normal direction or the reverse direction. One end of the wire 861 is connected to the rotation shielding wall 711 and the other end is connected to the winding portion 851 . One end of the wire 862 is connected to the rotation shielding wall 712 and the other end is connected to the winding portion 851 . The shielding wall driving mechanism 601 drives the opening and closing operations of the rotating shielding wall 711 and the rotating shielding wall 712 .

With this configuration, by rotating the drive motor 741 in the normal direction, the wire 861 and the wire 862 are wound by rotating the winding portion 851, and the rotation shielding wall 711 and the rotation shielding wall 712 are placed in the lying state. , the closed state of blocking the air passage is brought about. On the other hand, by rotating the drive motor 741 in the reverse direction, the wire 861 and the wire 862 are drawn out by rotating the winding part 851, and the rotation shielding wall 711 and the rotation shielding wall 712 change from the upright state to the lying state. It becomes the open state which releases the above-mentioned air course.

The shielding wall drive mechanism 602 has a winding portion 852 , a drive motor 742 , wires 863 and 864 . The drive motor 742 rotates the substantially bar-shaped winding portion 852 in the forward rotation direction or the reverse rotation direction. One end of the wire 863 is connected to the rotation shielding wall 713 and the other end is connected to the winding portion 852 . One end of the wire 864 is connected to the rotating shielding wall 714 and the other end is connected to the winding portion 852 . The shielding wall driving mechanism 602 drives the opening and closing operations of the rotating shielding wall 713 and the rotating shielding wall 714 .

With this configuration, by rotating the drive motor 742 in the normal direction, the wire 863 and the wire 864 are wound by rotating the winding portion 852, and the rotation shielding wall 713 and the rotation shielding wall 714 are placed in the lying state. , the closed state of blocking the air passage is brought about. On the other hand, by rotating the driving motor 742 in the reverse direction, the wire 863 and the wire 864 are drawn out by rotating the winding portion 852, and the turning shielding wall 713 and the turning blocking wall 714 change from the upright state to the lying state. It becomes the open state which releases the above-mentioned air course.

As described above, the shielding wall drive mechanism 601 and the shielding wall drive mechanism 602 individually drive the opening and closing operations of the rotation shielding walls 711 to 714, whereby the rotation shielding walls 711 to 714 are individually driven. The configuration of the shielding device 70 can be simplified while securing the degree of freedom of the opening/closing operation of the shielding device 714 .

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention.

For example, referring to FIG. 6A, by arranging the moving shaft 76 in the intermediate portion of the moving shaft slide groove 80, the rotation shielding wall 71 can be in a half-open state. By doing so, it is possible to finely control the amount of cold air blown into the storage compartment.

10 Refrigerator 11 Insulation box body 12 Outer box 13 Inner box 14 Insulation material 15 Refrigerator compartment 17 Freezer compartment 18 Upper freezer compartment 19 Lower freezer compartment 20 Vegetable compartment 21 Insulated door 23 Insulated door 24 Insulated door 25 Insulated door 26 Cooling compartment 27 Air outlet 28 Return port 29 Refrigerator compartment supply air passage 31 Freezer chamber supply air passage 33 Air outlet 34 Air outlet 37 Vegetable compartment return air passage 38 Return port 39 Return port 42 Insulation partition wall 43 Insulation partition wall 44 Compressor 45 Cooler 46 Defrosting Heater 47 Blower 48 Rotating connecting portion 50 Air passage partition wall 51 Refrigerator compartment supply air passage 52 Upper freezer compartment supply air passage 53 Lower freezer compartment supply air passage 55 Pin 56 Air passage partition wall 58 Side wall 59 Opening portions 60, 601, 602 Shielding wall drive mechanism 61, 611, 612, 613, 614, 615 Cam 63 Support base 64 Rotating connection part 65 Partition 66 Partition 67 Front cover 68 Rotation connection part 69 Pin 70 Shielding device 71, 711, 712, 713, 714, 715 rotation shielding walls 73, 731, 732, 733, 734, 735 rotation plates 74, 741, 742, 743, 744, 745 drive motors 76, 761, 762, 763, 764, 765 movement shaft 80, 801, 802, 803, 804, 805 Moving shaft slide groove 81 Solenoid 82 Contact part 851, 852 Winding part 861, 862, 863, 864 Wire 87 Movable part 100 Refrigerator 101 Refrigerator compartment 102 Freezer compartment 103 Vegetable compartment 104 Cooling compartment 105 partition wall 106 opening 107 blower fan 108 cooler 109 air passage 110 blower cover 111 recess 113 opening 114 damper

Claims (4)

A shielding device for blocking an air passage through which cold air is blown inside a refrigerator,
a plurality of rotating shielding walls surrounding the blower from the outside in the radial direction;
a shielding wall driving mechanism for driving the rotating shielding wall,
A plurality of the shielding wall driving mechanisms are provided,
The shielding wall driving mechanism has a cam rotatably connected to the rotating shielding wall, a rotary plate formed with a groove for sliding the cam, and a drive motor for rotating the rotary plate. death,
A rotating shaft of the driving motor is connected to the rotating plate so as not to rotate relative to each other;
A shielding device , wherein the movement shaft of the cam is slidably engaged with the groove . The rotary shaft of the drive motor is connected to one end side portion of the rotary plate so as not to rotate relatively,
2. The shielding device according to claim 1, wherein the groove is formed in the other end portion opposite to the one end portion of the rotary plate. 2. The shielding device according to claim 1, wherein said groove is curved so as to expand in a direction away from said rotating shaft . the groove has a first end and a second end;
2. The shielding device of claim 1, wherein the first end is closer to the axis of rotation than the second end is..

Images