JP6999923B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator for cooling and storing food or the like in a storage chamber, and more particularly to a refrigerator provided with a shielding device for appropriately blocking an air passage connected to the storage chamber.

Conventionally, a refrigerator as described in Patent Document 1 has been known in which a plurality of storage chambers are appropriately cooled by one cooler. FIG. 8 schematically shows the refrigerator 100 described in this document. In the refrigerator 100 shown in this figure, a refrigerating chamber 101, a freezing chamber 102, and a vegetable compartment 103 are formed from above. A cooling chamber 104 in which the cooler 108 is housed is formed on the back side of the freezing chamber 102, and cold air is supplied to each storage chamber on the partition wall 105 that separates the cooling chamber 104 and the freezing chamber 102. The opening 106 for the purpose is formed. Further, a blower fan 107 for blowing cold air is disposed in the opening 106, and a blower cover 110 for covering the blower fan 107 is arranged on the freezing chamber 102 side. A damper 114 is arranged in the middle of the air passage 109 through which the cold air supplied to the refrigerating chamber 101 flows.

The blower cover 110 described above will be described in detail with reference to FIG. The blower cover 110 is formed with a recess 111 having a substantially quadrangular shape, and an opening 113 is formed by partially cutting out the upper portion of the recess 111. Here, in the situation where 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 having the above configuration operates as follows. With reference to FIG. 8, first, when cooling both the refrigerating chamber 101 and the freezing chamber 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, a part of the cold air cooled by the cooler 108 inside the cooling chamber 104 is blown to the freezing chamber 102 by the blowing wind of the blowing fan 107. Further, the other part of the cold air is blown to the refrigerating chamber 101 via the air passage 109, the damper 114, and the air passage 109. As a result, both the freezing chamber 102 and the refrigerating chamber 101 are cooled.

On the other hand, when cooling only the refrigerating chamber 101, the blower fan 107 is covered with the blower cover 110, the damper 114 is opened, and the cold air cooled by the cooler 108 is blown by the blower fan 107 in this state. When the blower cover 110 is closed, the opening 113 formed in the upper part of the blower cover 110 communicates with the air passage 109. Therefore, the cold air blown by the blower fan 107 is supplied to the refrigerating chamber 101 via the above-mentioned opening 113, the damper 114, and the air passage 109. As described above, by using the blower cover 110 having the opening 113 formed therein, it is possible to appropriately cool a plurality of storage chambers with one cooler 108.

With reference to FIG. 10, a guide hole 116 is formed so as to penetrate the vicinity of the opposite corners of the blower cover 110 described above. The guide hole 116 has a cylindrical shape. Further, the guide pin 115 penetrates the guide hole 116, and the back side of the guide pin 115 is fixed to the refrigerator main body side. When the blower cover 110 advances and retreats in the front-rear direction in order to change the air passage flowing through the refrigerator, the guide pin 115 guides the guide hole 116 while sliding. With this function, the advance / retreat operation of the blower cover 110 is stably guided by the guide pin 115. The blower cover 110 having such a configuration is described in, for example, Patent Document 2.

Japanese Unexamined Patent Publication No. 2013-2664 Japanese Unexamined Patent Publication No. 2015-05537

However, in the guide structure of the blower cover 110 shown in FIG. 10, there is a possibility that the operation of the blower cover 110 may be hindered by freezing under the operating condition of the refrigerator. Specifically, in the configuration in which the guide pin 115 penetrates through the guide hole 116 of the blower cover 110, when the moisture that has entered between the guide hole 116 and the guide pin 115 freezes, the guide pin 115 will move. It becomes difficult to slide inside the guide hole 116. Therefore, the advance / retreat operation of the blower cover 110 is locked, and the air passage and the air volume cannot be changed by the blower cover 110.

Further, when the above-mentioned blower cover 110 is arranged in the vicinity of the greenhouse where the temperature inside the refrigerator can be changed from the refrigerating temperature zone to the refrigerating temperature zone, the above-mentioned problem becomes remarkable. Specifically, when the temperature inside the refrigerator is set to the refrigerating temperature zone, a large amount of dew enters between the guide hole 116 and the guide pin 115. In this state, if the temperature inside the refrigerator is set to the freezing temperature zone, a large amount of dew freezes between the guide hole 116 and the guide pin 115, and the problem of locking the advance / retreat operation of the blower cover 110 becomes apparent.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a refrigerator capable of suppressing the cover of a shielding device that appropriately closes an air passage from being locked by freezing. be.

The refrigerator of the present invention has a refrigerating cycle cooler that cools the air supplied to the storage chamber, a cooling chamber in which the cooler is arranged and an air outlet connected to the storage chamber is formed, and the air outlet. A blower that blows the supplied air toward the storage chamber, a shielding device that at least partially closes the air outlet, and a control device that controls the operation of the refrigerating cycle, the blower, and the shielding device. The shielding device includes a blower cover that covers the blower, a drive mechanism that opens and closes the blower cover, and a guide portion that guides the opening and closing movement of the blower cover. The blower cover has a main surface portion . And a side surface portion and a guided portion which is arranged radially outside the side surface portion and contacts the guide portion , and the guide portion contacts the guided portion from the outside in the radial direction. The guided portion and the guide portion have a first contact structure in which both are in contact with each other on one side in the circumferential direction of the blower cover, and a second contact structure in which both are in contact with each other on the other side in the circumferential direction of the blower cover. The drive mechanism has a screw hole formed in the blower cover and a drive shaft screwed into the screw hole, and the drive shaft rotates in one direction to form the blower. When the cover is in a non-closed state away from the blower port and the drive shaft is rotated in the other direction, the blower cover is in the closed state in which the blower port is closed and the drive shaft is rotated in the one direction. In the first contact structure, the guided portion and the guided portion are in contact with each other, and in the second contact structure, the guided portion and the guided portion are separated from each other, and the drive shaft is the other. When rotating in the direction, in the second contact structure, the guided portion and the guided portion are in contact with each other, and in the first contact structure, the guided portion and the guided portion are separated from each other. It is characterized by.

Further, in the refrigerator of the present invention, the guided portion has a concave shape that is recessed inward in the radial direction, and the guide portion has a convex shape that protrudes toward the guided portion. ..

Further, in the refrigerator of the present invention, the guided portion has a convex shape protruding toward the outside in the radial direction, and the guide portion has a concave shape having a concave shape toward the outside in the radial direction.

Further, the refrigerator of the present invention is characterized in that the guided portion is formed with a protrusion protruding toward the guide portion.

Further, in the refrigerator of the present invention, the guided portion is a through hole formed in the blower cover, and the guide portion is arranged inside the through hole of the blower cover, and the first contact structure and the said. The second contact structure is characterized in that it is formed by contacting the inner wall of the through hole with the guide portion.

Further, in the refrigerator of the present invention, the guide portion is erected from the main surface portion of the shielding base supporting the blower cover toward the blower cover, and the guide portion of the shielding base is erected on the portion where the guide portion is erected. , It is characterized by forming an opening.

Further, in the refrigerator of the present invention, the blower cover is characterized by having a rib that covers the guided portion from the outside in the radial direction.

Further, in the refrigerator of the present invention, the blower cover has a main surface portion and a side surface portion erected from the main surface portion toward the blower, and the end portion of the rib on the blower side is the above. It is characterized in that it is arranged more away from the blower than the end portion of the side surface portion on the blower side.

The refrigerator of the present invention has a refrigerating cycle cooler that cools the air supplied to the storage chamber, a cooling chamber in which the cooler is arranged and an air outlet connected to the storage chamber is formed, and the air outlet. A blower that blows the supplied air toward the storage chamber, a shielding device that at least partially closes the air outlet, and a control device that controls the operation of the refrigerating cycle, the blower, and the shielding device. The shielding device includes a blower cover that covers the blower, a drive mechanism that opens and closes the blower cover, and a guide portion that guides the opening and closing movement of the blower cover. The blower cover has a main surface portion . And a side surface portion and a guided portion which is arranged radially outside the side surface portion and contacts the guide portion , and the guide portion contacts the guided portion from the outside in the radial direction. The guided portion and the guide portion have a first contact structure in which both are in contact with each other on one side in the circumferential direction of the blower cover, and a second contact structure in which both are in contact with each other on the other side in the circumferential direction of the blower cover. The drive mechanism has a screw hole formed in the blower cover and a drive shaft screwed into the screw hole, and the drive shaft rotates in one direction to form the blower. When the cover is in a non-closed state away from the blower port and the drive shaft is rotated in the other direction, the blower cover is in the closed state in which the blower port is closed and the drive shaft is rotated in the one direction. In the first contact structure, the guided portion and the guided portion are in contact with each other, and in the second contact structure, the guided portion and the guided portion are separated from each other, and the drive shaft is the other. When rotating in the direction, in the second contact structure, the guided portion and the guided portion are in contact with each other, and in the first contact structure, the guided portion and the guided portion are separated from each other. It is characterized by. Therefore, since the guide portion contacts the guided portion of the blower cover via the first contact structure and the second contact structure, the area of the contact portion where the guide portion and the blower cover contact is reduced, and the contact portion is contacted. It is possible to prevent the opening / closing operation of the blower cover from being hindered by the freezing of the adhering water.

Further, in the refrigerator of the present invention, the guided portion has a concave shape that is recessed inward in the radial direction, and the guide portion has a convex shape that protrudes toward the guided portion. .. Therefore, the guided portion of the blower cover having a concave shape and the guide portion having a convex shape come into substantially point contact with each other under operating conditions, and locking due to the above-mentioned freezing can be prevented.

Further, in the refrigerator of the present invention, the guided portion has a convex shape protruding toward the outside in the radial direction, and the guide portion has a concave shape having a concave shape toward the outside in the radial direction. Therefore, the guided portion of the blower cover having a convex shape and the guide portion having a concave shape come into substantially point contact with each other under operating conditions, and locking due to the above-mentioned freezing can be prevented.

Further, the refrigerator of the present invention is characterized in that the guided portion is formed with a protrusion protruding toward the guide portion. Therefore, since the protrusion of the guided portion of the blower cover comes into contact with the guide portion at a substantially point point, the effect of preventing locking due to freezing can be remarkable.

Further, in the refrigerator of the present invention, the guided portion is a through hole formed in the blower cover, and the guide portion is arranged inside the through hole of the blower cover, and the first contact structure and the said. The second contact structure is characterized in that it is formed by contacting the inner wall of the through hole with the guide portion. Therefore, the effect of preventing locking due to freezing can be made remarkable by the substantially point contact between the through hole which is the guided portion and the guide portion which penetrates the through hole.

Further, in the refrigerator of the present invention, the guide portion is erected from the main surface portion of the shielding base supporting the blower cover toward the blower cover, and the guide portion of the shielding base is erected on the portion where the guide portion is erected. , It is characterized by forming an opening. Therefore, the dew adhering to the guide portion can be drained to the outside through the opening, and it is possible to prevent the blower cover from being locked due to the freezing of the dew.

Further, in the refrigerator of the present invention, the blower cover is characterized by having a rib that covers the guided portion from the outside in the radial direction. Therefore, even if dew adheres to the blower cover under the operating condition of the refrigerator, the ribs of the blower cover cover the guided portion to prevent the dew from adhering to the guide portion and the guided portion. be able to. Therefore, it is possible to prevent the blower cover from being locked due to the freezing of the dew.

Further, in the refrigerator of the present invention, the blower cover has a main surface portion and a side surface portion erected from the main surface portion toward the blower, and the end portion of the rib on the blower side is the above. It is characterized in that it is arranged more away from the blower than the end portion of the side surface portion on the blower side. Therefore, when the blower cover is closed, the side surface portion abuts on the wall-shaped member on the refrigerator body side, while the rib separates from this wall-shaped member, so that the contact area between the blower cover and the wall-shaped member is small. Become. Therefore, it is possible to prevent the blower cover from sticking to the wall-shaped member due to the freezing of the moisture interposed in the contact portion.

It is a figure which shows the refrigerator which concerns on embodiment of this invention, (A) is a front view, (B) is a side sectional view. It is an exploded perspective view which shows the shielding device which the refrigerator which concerns on embodiment of this invention has. It is a figure which shows the shielding device which the refrigerator which concerns on embodiment of this invention has, (A) is the sectional view which shows the shielding device of a non-closed state, (B) is the sectional view which shows the shielding device of a closed state. .. It is a figure which shows the shielding device which the refrigerator which concerns on embodiment of this invention has, (A) is a plan view, (B) is an enlarged view. It is a figure which shows the shielding device which the refrigerator which concerns on embodiment of this invention has, (A) is the enlarged perspective view which shows the shielding base of the part where the guide part was formed, (B) is the guide | guided part formed. It is an enlarged perspective view of the blower cover which shows the part | It is a figure which shows the shielding device which the refrigerator which concerns on embodiment of this invention has, (A) to (F) is a schematic diagram which shows other form of the guide part and the guided part. It is a figure which shows the shielding device which the refrigerator which concerns on embodiment of this invention has, (A) and (B) is a schematic diagram which shows further other form of the guide part and the guided part. It is an enlarged side view which shows the refrigerator which concerns on the background technology. It is a perspective view which shows the blower cover adopted in the refrigerator which concerns on the background technology. It is a perspective view which shows the support structure of the blower cover adopted in the refrigerator which concerns on the background technology.

Hereinafter, the refrigerator 10 according to the embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the same members are designated by the same reference numerals in principle, and repeated description thereof will be omitted. Further, in the following description, each direction of up, down, front, back, left and right is appropriately used, and the left and right refer to the left and right when the refrigerator 10 is viewed from the front.

A schematic configuration of the refrigerator 10 according to the present embodiment will be described with reference to FIG. FIG. 1A is a front view showing the configuration of each air passage of the refrigerator 10, and FIG. 1B is a cross-sectional view of the refrigerator 10. In FIG. 1A, the portion where the air passage is formed is shown by hatching, and in FIG. 1B, the portion where the heat insulating material is formed is shown by hatching.

With reference to FIG. 1B, the refrigerator 10 includes a heat insulating box 11 as a main body, and a storage chamber for storing food or the like is formed inside the heat insulating box 11. As this storage chamber, a changing greenhouse 15 is formed in the upper stage, and a refrigerating chamber 16 is formed in the lower stage. Here, the changing greenhouse 15 is a storage chamber whose indoor temperature can be changed from the refrigerating temperature zone to the freezing temperature zone.

The front surface of the heat insulating box 11 is open, and the heat insulating doors 17 and 18 are provided in the openings corresponding to the storage chambers so as to be openable and closable, respectively. The heat insulating door 17 closes the front surface of the greenhouse 15, and the upper and lower left upper and lower ends of the heat insulating door 17 are rotatably supported by the heat insulating box 11. Similarly, the heat insulating door 18 closes the front surface of the refrigerating chamber 16, and the upper and lower left upper and lower ends of the heat insulating door 18 are rotatably supported by the heat insulating box body 11.

The heat insulating box 11 which is the main body of the refrigerator 10 is arranged with a steel plate outer box 12 having an open front surface and a gap in the outer box 12, and a synthetic resin inner box 13 having an open front surface. It is composed of and. A heat insulating material 14 made of foamed polyurethane is filled and foamed in the gap between the outer box 12 and the inner box 13. The heat insulating doors 17 and 18 also adopt the same heat insulating structure as the heat insulating box 11.

The refrigerating room 16 and the greenhouse 15 located below the refrigerating room 16 are partitioned by a heat insulating partition wall 19. The heat insulating partition wall 19 has a heat insulating structure similar to that of the heat insulating box 11.

Storage shelves are arranged inside the greenhouse 15 and the refrigerating room 16. Further, in the lower part of the refrigerating chamber 16, a storage container 32 and a storage container 33 that can be pulled out in the front-rear direction are arranged.

Behind the greenhouse 15, a cloaking device 40 for adjusting the cold air supplied to each storage chamber is arranged. As will be described later, when the cloaking device 40 is in the non-closed state, the cold air blown from the blower 31 is blown to each storage chamber, and when the cloaking device 40 is in the closed state, the cooling chamber 20 and each air passage are separated. Can be blocked. The structure and operation of the shielding device 40 will be described later.

A cooling chamber 20 is formed further behind the greenhouse 15, and a cooler 27, which is an evaporator for cooling the air circulating in the refrigerator, is arranged inside the cooling chamber 20.

The cooler 27 is connected to a compressor 35, a radiator (not shown), and a capillary tube which is an expansion means (not shown) via a refrigerant pipe, and constitutes a steam compression type refrigeration cycle circuit.

With reference to FIG. 1B, the front of the cooling chamber 20 is partitioned by a partition plate 36, and by opening the partition plate 36, an air outlet 30 through which cold air blown to each storage chamber flows is formed. Has been done. A blower 31 for blowing cold air is arranged in front of the blower port 30. As the blower 31, a centrifugal fan such as a turbo fan can be adopted, and the centrifugal fan blows air in the circumferential direction. Further, the shielding device 40 described above performs an opening / closing operation so as to cover the blower 31 and the blower port 30.

With reference to FIG. 1B, an outlet 21 is formed on the rear side surface of the greenhouse 15 to blow out cold air, which is the air cooled by the cooler 27. Further, at the lower part of the rear side surface of the greenhouse 15, a return port 22 that communicates the lower part of the greenhouse 15 and the lower part of the cooling chamber 20 is formed. As shown in FIG. 1 (A), the cold air is blown toward the surroundings by the blower 31 via the freezing chamber supply air passage 29, and then the greenhouse 15 is formed from the outlet 21 formed around the blower 31. It is blown out to. Further, the cold air that has cooled the greenhouse 15 returns to the cooling chamber 20 via the return port 22.

Further, a refrigerating chamber air passage 25 through which cold air blown to the refrigerating chamber 16 flows downward from the shielding device 40 is formed. The refrigerating chamber air passage 25 extends to the vicinity of the lower end of the refrigerating chamber 16. The refrigerating chamber air passage 25 and the refrigerating chamber 16 communicate with each other via a plurality of outlets 23. Further, as shown in FIG. 1A, the lower portion of the refrigerating chamber 16 and the cooling chamber 20 communicate with each other by the refrigerating chamber return air passage 26. Therefore, when cooling the refrigerating chamber 16, the cold air cooled by the cooler 27 inside the cooling chamber 20 is circulated through the refrigerating chamber air passage 25 via the air outlet 30 and the shielding device 40. , Is blown out from the outlet 23 to the refrigerator compartment 16. Further, the cold air that has cooled the refrigerating chamber 16 flows through the refrigerating chamber return air passage 26 shown in FIG. 1A and returns to the cooling chamber 20 from the return port 24 formed at the lower part of the cooling chamber 20.

A refrigerating room damper 34 is interposed in the refrigerating room air passage 25. The refrigerating chamber damper 34 is arranged near the rear of the heat insulating partition wall 19. When the refrigerating chamber damper 34 is opened, cold air can be blown from the cooling chamber 20 to the refrigerating chamber 16 via the refrigerating chamber air passage 25. On the other hand, when the refrigerating chamber damper 34 is closed, the refrigerating chamber air passage 25 is closed in the middle, and cold air is not blown to the refrigerating chamber 16 via the refrigerating chamber air passage 25.

Further, in the inside of the cooling chamber 20, below the cooler 27, a defrost heater 28 is provided as a defrosting means for melting and removing the frost adhering to the cooler 27. The defrost heater 28 is an electric resistance heating type heater.

With reference to FIG. 2, the configuration of the shielding device 40 adopted in the above-mentioned refrigerator 10 will be described. FIG. 2 is a perspective view showing each member constituting the shielding device 40 in the front-rear direction. Here, the shielding device 40 is shown upside down.

The shielding device 40 has a blower cover 42 that covers the blower 31, and a shielding base 41 that attaches the blower cover 42 to the main body of the refrigerator 10. The main function of the cloaking device 40 is to appropriately put the above-mentioned blower 31 into a non-closed state or a closed state, so that the cold air blown by the rotation of the blower 31 is supplied to a desired storage chamber. Further, by closing the shielding device 40, it is possible to prevent the warm air generated in the defrosting process of the cooler 27 from flowing into the greenhouse 15 or the like. Here, the warm air is the air heated by the defrost heater 28.

The blower cover 42 is formed by injection molding a synthetic resin material into a substantially lid shape, and has a main surface portion 50 having a substantially square shape when viewed from the front and a side surface portion 51 extending rearward from the peripheral edge portion of the main surface portion 50. have. A screw hole 39 is formed by circularly penetrating the vicinity of the center of the main surface portion 50, and a screw groove is formed by spirally recessing the inner side surface of the screw hole 39. The opening 38 is formed by opening the lower side surface portion 51 of the blower cover 42. The opening 38 has a rectangular shape formed elongated on the left and right sides when viewed from below. Since the opening 38 is formed, even when the shielding device 40 is closed, the cooling chamber 20 and the refrigerating chamber air passage 25 can communicate with each other via the opening 38. The insertion hole 54 is formed by opening the vicinity of the peripheral portion of the main surface portion 50 of the blower cover 42 in a circular shape. As will be described later, the insertion hole 54 is penetrated by the support portion 52 of the shielding base 41. The contact portion 53 is formed by raising the main surface portion 50 around the insertion hole 54 in an annular shape toward the rear side. As described above, the role of the blower cover 42 is to substantially close the blower 31 arranged in the blower port 30 of the cooling chamber 20. Further, a guided portion 62 is formed on the lower left portion and the upper right portion of the blower cover 42. The guided portion 62 is a portion that slides in contact with the guide portion 60 of the shielding base 41, which will be described later, when the blower cover 42 moves forward and backward.

The drive shaft 44 has a substantially cylindrical shape, and is provided with a screw thread (not shown) having a part of its side surface continuously projected in a spiral shape. The drive shaft 44 is a drive mechanism that moves the blower cover 42 in the front-rear direction. The screw thread formed on the side surface of the drive shaft 44 and the screw groove formed on the side surface of the screw hole 39 of the blower cover 42 are screwed under the usage conditions. That is, a screw mechanism is formed by the screw thread of the drive shaft 44 and the screw groove of the screw hole 39 of the blower cover 42. A stepping motor (not shown) is built in the drive shaft 44, and the drive shaft 44 rotates by a predetermined angle by the drive force of the motor. When the drive shaft 44 rotates clockwise, for example, when viewed from the front, the blower cover 42 separates from the shielding base 41, and the blower cover 42 closes the blower port 30 shown in FIG. 1B to close the drive shaft 44. Therefore, the cold air blown by the blower 31 is not supplied to the greenhouse 15. On the other hand, when the drive shaft 44 rotates counterclockwise when viewed from the front, for example, the blower cover 42 moves toward the shielding base 41 side, and the blower port 30 shown in FIG. 1 (B) is not covered by the blower cover 42. , Will be in a non-closed state. Therefore, the cold air blown by the blower 31 is supplied to the greenhouse 15 via this gap.

The shielding base 41 is a member made of a synthetic resin having a shape similar to that of the blower cover 42 described above. Inside the shielding base 41, a space is formed in which the blower cover 42 can be stored. The shielding base 41 is formed with a support portion 52 that projects rearward in a columnar shape. Here, three support portions 52 are formed around the drive shaft 44. The support portion 52 penetrates the insertion hole 54 of the blower cover 42 described above. The shielding base 41 is arranged between the rear side surface of the greenhouse 15 and the partition plate 36 with reference to FIG. 1 (B), and is fixed to the heat insulating box body 11 side. Further, the guide portion 60 extends rearward from the lower left portion and the upper right portion of the main surface portion 57 of the shielding base 41. As will be described later, the guide unit 60 has a function of contacting the blower cover 42 to guide the advancing / retreating operation.

A rubber member 45 as an elastic member is fixed to the rear end of the support portion 52. The blower 31 is attached to the support portion 52 via the rubber member 45. As a result, the vibration generated from the rotating blower 31 is absorbed by the rubber member 45, and the vibration is suppressed from being conducted to the support portion 52.

The blower 31 has, for example, a blower fan 55 which is a centrifugal fan, a motor (not shown here) for rotating the blower fan 55, and a fan support portion 56 for rotatably supporting the blower fan 55 and the motor. The flange portion 49 is formed by partially projecting the outer peripheral portion of the fan support portion 56 toward the outside in the circumferential direction. The flange portion 49 exhibits an incomplete annular shape in which the outer peripheral end portion is open. The blower 31 is supported by the support portion 52 described above by fitting the collar portion 49 to the rubber member 45 described above.

FIG. 3 shows the structure of the shielding device 40 assembled to the refrigerator 10. FIG. 3A is a cross-sectional view showing a non-closed state shielding device 40, and FIG. 3B is a cross-sectional view showing a closed state shielding device 40.

With reference to FIG. 3A, in the non-closed shielding device 40, the drive shaft 44 rotates counterclockwise, so that the blower cover 42 moves to the front end portion. That is, with reference to FIG. 1B, the rear end portion of the blower cover 42 does not abut on the partition plate 36 around the blower port 30. Further, the blower 31 which is a centrifugal fan blows air toward the centrifugal direction, but since the side surface portion 51 of the blower cover 42 is arranged in front of the blower 31, the blower of the blower 31 interferes with the blower cover 42. There is no such thing. Therefore, the cold air blown by the blower 31 is efficiently supplied to each storage chamber.

With reference to FIG. 3B, in the closed shielding device 40, the blower cover 42 is moved to the rear end portion by rotating the drive shaft 44 clockwise. That is, with reference to FIG. 1B, the rear end portion of the blower cover 42 is in contact with the partition plate 36 around the blower port 30 from the front. Further, the blower 31 which is a centrifugal fan blows air toward the centrifugal direction, but since the side surface portion 51 of the blower cover 42 is arranged on the side of the blower 31, the blower of the blower 31 is blocked by the blower cover 42. There is. On the other hand, the side surface portion 51 is not formed at the lower end portion of the blower cover 42, and a rectangular opening 38 is formed. As described above, cold air can be supplied to the refrigerating chamber 16 via the opening 38. At this time, the main surface portion 50 of the blower cover 42 is in contact with the rubber member 45 attached to the rear end of the support portion 52.

Here, in the refrigerator 10 of the present embodiment, the blower cover 42 is moved in the front-rear direction in order to control the air passage of cold air, and the guide portion 60 of the shielding base 41 shown in FIG. 2 is used for such movement. , The guide is guided by continuing to contact the guided portion 62 of the blower cover 42. The guide structure will be described later.

The normal cooling control for cooling each storage chamber while appropriately opening and closing the shielding device 40, the refrigerating chamber damper 34, and the like will be described below.

First, the operation of cooling only the refrigerating chamber 16 will be described. Here, the compressor 35 is operated, the refrigerator compartment damper 34 is opened, and the blower 31 is operated based on the instruction of the control device (not shown). In this case, as shown in FIG. 3 (B), the shielding device 40 is in the closed state, so that a gap is formed between the blower cover 42 and the partition plate 36 with reference to FIG. 1 (B). No cold air is supplied to the greenhouse 15. On the other hand, cold air is blown into the refrigerating chamber 16 from the cooling chamber 20 via the opening 38 (FIG. 2) of the blower cover 42 and the refrigerating chamber air passage 25 (FIG. 1 (B)). By supplying cold air only to the refrigerating chamber 16, the refrigerating chamber 16 can be effectively cooled.

Next, the operation of cooling only the greenhouse 15 will be described. Based on the instruction of the control device, the compressor 35 is operated, the refrigerator compartment damper 34 is closed, and the blower 31 is operated. At this time, the blower cover 42 is in a non-closed state as shown in FIG. 3A. As a result, the air cooled by the cooler 27 is blown by the blower 31 arranged in the vicinity of the blower port 30, passes through the gap between the blower cover 42 and the partition plate 36, and the freezer chamber supply air passage 29 and It passes through the air outlets 21 in sequence and is supplied only to the changing greenhouse 15. On the other hand, since the refrigerating chamber damper 34 is in the closed state, cold air is not blown to the refrigerating chamber 16 through the refrigerating chamber air passage 25. By doing so, only the greenhouse 15 can be effectively cooled. As described above, the indoor temperature of the greenhouse 15 can be changed from the refrigerating temperature zone to the freezing temperature zone according to the instruction of the control device based on the operation of the user.

Further, by keeping the shielding device 40 in the non-closed state and the refrigerating chamber damper 34 in the open state, cold air can be blown to both the greenhouse 15 and the refrigerating chamber 16 to cool both storage chambers at the same time. ..

With reference to FIG. 4, a mechanism for guiding the opening / closing operation of the blower cover 42 described above will be described. FIG. 4A is a plan view showing the shielding device 40, and FIG. 4B is an enlarged view showing a portion where the guide portion 60 is formed (a portion surrounded by a dotted line in FIG. 4A). be.

With reference to FIG. 4A, guide portions 60 are formed on the left lower portion and the right upper portion of the shielding base 41 on the paper surface. The guide portion 60 is a portion where the main surface portion 57 of the shielding base 41 is projected toward the rear, and guides the advance / retreat operation of the blower cover 42.

Guided portions 62 guided by the guide portion 60 described above are formed on the lower left and upper right of the blower cover 42. The guided portion 62 is a portion where the outer end portion of the blower cover 42 is recessed inward in the radial direction, and the guide portion 60 makes a substantially point contact or a substantially line contact. In the following, abbreviated point contact or abbreviated line contact may be referred to as point contact or the like. The guide portion 60 of the shielding base 41 is brought into point contact with the guided portion 62 of the blower cover 42, thereby smoothly guiding the blower cover 42 while reducing the contact area between the guide portion 60 and the guided portion 62. be able to. Therefore, it is possible to reduce the amount of water interposed between the guide portion 60 and the guided portion 62, and to prevent the freezing of this water from hindering the advance / retreat operation of the blower cover 42.

With reference to FIG. 4B, the guide portion 60 is a portion that integrally projects rearward from the main surface portion 57 of the shielding base 41 as described above. The guide portion 60 has a plate shape in which the intermediate portion thereof curves convexly toward the center of the blower cover 42.

The guided portion 62 is a portion formed at the outer end portion of the blower cover 42, and has a shape that is concavely curved toward the center portion of the blower cover 42. The specific shapes of the guide portion 60 and the guided portion 62 will be described later with reference to FIG.

In the present embodiment, the first contact structure 63 and the second contact structure 64 are formed by the guide portion 60 and the guided portion 62 described above. The first contact structure 63 is a portion where the guide portion 60 and the guided portion 62 make point contact or the like on one side in the circumferential direction of the blower cover 42, that is, on the upper side on the paper surface. The second contact structure 64 is a portion where the guide portion 60 and the guided portion 62 make point contact or the like on the other side in the circumferential direction of the blower cover 42, that is, on the lower side on the paper surface. Under the operating conditions of the refrigerator 10, when the rotational action of the drive shaft 44 (FIG. 2) exerts a rotational force for rotating the blower cover 42 counterclockwise on the paper surface, the first contact structure 63 Then, the upper surface of the upper portion of the guide portion 60 and the lower surface of the upper portion of the guided portion 62 come into contact with each other. On the other hand, under the operating condition of the refrigerator 10, when the rotational action of the drive shaft 44 causes the rotational force to rotate the blower cover 42 clockwise on the paper surface, the guide is provided in the second contact structure 64. The lower surface of the lower portion of the portion 60 and the upper surface of the lower portion of the guided portion 62 come into contact with each other. As a result, unnecessary rotation of the blower cover 42 is prevented, and the forward / backward movement of the blower cover 42 in the front-rear direction is smoothly guided.

With reference to FIG. 1 (B), in this embodiment, the greenhouse 15 is formed in front of the shielding device 40. As described above, the greenhouse 15 can adjust the indoor temperature from the refrigerating temperature zone to the freezing temperature zone. Therefore, when the changing greenhouse 15 is set to the refrigerating temperature zone, a large amount of water adheres to the shielding device 40, and then when the changing greenhouse 15 is set to the refrigerating temperature zone, the water adhering to the moving portion of the blower cover 42 freezes. , There is a risk that the advance / retreat operation of the blower cover 42 will be hindered.

In the present embodiment, the guide portion 60 and the guided portion 62 are brought into contact with each other at substantially points as described above. That is, the area of contact between the guide portion 60 and the guided portion 62 is made as small as possible. By doing so, the water content between the guide portion 60 and the guided portion 62 can be reduced, and even if the water content freezes, the blower cover 42 can be operated smoothly.

With reference to FIG. 5, the guide portion 60 and the guided portion 62 forming each of the above contact structures will be described in detail. 5 (A) is an enlarged perspective view of the guide portion 60, FIG. 5 (B) is an enlarged perspective view of the guided portion 62, and FIG. 5 (C) is a view of the guided portion 62 from another angle. It is an enlarged perspective view.

With reference to FIG. 5A, the shape of the guide portion 60 is a shape that enables point contact with the guided portion 62 of the blower cover 42. Here, the guide portion 60 has a plate shape in which the intermediate portion thereof curves convexly toward the central portion of the blower cover 42 described above. In other words, the guide unit 60 has a shape in which the alphabet "V" is rotated counterclockwise by approximately 90 degrees when viewed from the rear. By forming the guide portion 60 from the bent plate-shaped member, the noise is not amplified inside the guide portion 60 as compared with the case of the background technology supported by the tubular member, and the blower cover 42 It is possible to suppress the generation of a loud operation noise due to the advancing / retreating operation. Further, since the guide portion 60 has such a shape, the moisture adhering to the guide portion 60 can be concentrated on the lower end portion of the guide portion 60. Therefore, it is possible to prevent moisture from adhering to and freezing the portion where the guide portion 60 and the guided portion 62 come into contact with each other and slide.

The opening 65 is formed by penetrating the portion of the main surface portion 57 of the shielding base 41 surrounded by the guide portion 60. By draining the water adhering to the guide portion 60 to the outside via the opening 65 under the operating conditions, a large amount of water is suppressed from adhering to the guide portion 60, and the water freezes. This can prevent the blower cover 42 from locking.

Further, a plate-shaped support rib 61 extending outward from the vicinity of the central portion of the guide portion 60 is formed. The right end of the support rib 61 is continuous with the left side of the guide 60. Further, the front end portion of the support rib 61 straddles the opening 65 and is continuous with the main surface portion 57 of the shielding base 41. By forming the support rib 61 having such a configuration, the guide portion 60 can be reinforced by the support rib 61, and the effect of stably guiding the blower cover 42 by the guide portion 60 can be enhanced.

With reference to FIG. 5B, the guided portion 62 formed at the end of the blower cover 42 has a convex shape in which the central portion thereof is recessed toward the center side of the blower cover 42.

The scooped portion 67 is formed by scooping the blower covers 42 on both outer portions of the guided portion 62. By forming the hollowed portion 67, both ends of the guided portion 62 are thinned, and the guided portion 62 can be given flexibility. Therefore, when the guided portion 62 and the guided portion 60 come into contact with each other under operating conditions, the guided portion 62 is slightly deformed, so that the impact due to the contact can be mitigated.

The rear side end portion of the guided portion 62 is arranged in front of the rear side end portion of the side surface portion 51 of the blower cover 42. That is, in the front-rear direction, the guided portion 62 is shorter than the side surface portion 51. By doing so, referring to FIG. 1 (B), even if the blower cover 42 is moved rearward and abuts on the partition plate 36 to be in the closed state, the rear end portion of the side surface portion 51 of the blower cover 42 is closed. Abuts on the partition plate 36, but the guided portion 62 does not abut on the partition plate 36. Therefore, since the area of the blower cover 42 in contact with the partition plate 36 is reduced, the amount of water intervening between the two can be reduced, and it is possible to prevent the blower cover 42 from being locked due to the freezing of the water. .. Further, the guided portion 62 is arranged on the back side of the rib 66 described later. That is, in the front-rear direction, the guided portion 62 is shorter than the rib 66. With such a configuration, the rib 66 can surely cover the guided portion 62, and the effect of suppressing the adhesion of water to the guided portion 62 can be enhanced.

The rib 66 is a wall-shaped portion extending radially outward from the side surface portion 51 of the blower cover 42, and is formed along the circumference so as to cover the guided portion 62 from the radial outside. Two ribs 66 are formed so as to sandwich the guided portion 62 from both sides in the circumferential direction. The rib 66 covers both the guide portion 60 and the guided portion 62 from the outside with reference to FIG. 4 (B). Further, the rib 66 covers the first contact structure 63 and the second contact structure 64 described above from the outside. By forming the rib 66, the moisture generated under the operating condition flows along the outer side surface of the rib 66 in a direction away from the guide portion 60 and the guided portion 62, and the moisture adheres to the guided portion 62. Is suppressed.

With reference to FIG. 5C, the length L2 of the rib 66 in the front-rear direction is formed to be shorter than the length L1 of the side surface portion 51 of the blower cover 42. Further, the rear end portion of the rib 66 is arranged in front of the rear end portion of the side surface portion 51. As a result, with reference to FIG. 1B, even when the blower cover 42 is closed, the rear end of the side surface portion 51 of the blower cover 42 abuts on the partition plate 36, but the rib 66 hits the partition plate 36. Do not touch. Therefore, the area of the blower cover 42 in contact with the partition plate 36 can be reduced, and it is possible to prevent the blower cover 42 from being locked due to the freezing of moisture.

With reference to FIG. 6, other forms of the guide portion 60 and the guided portion 62 described above will be described. Each figure of FIG. 6 is a schematic diagram showing another form of the guide portion 60 and the guided portion 62. The guide portion 60 and the guided portion 62 shown in each figure form the first contact structure 63 and the second contact structure 64 shown in FIG. 4 (B). The forms of the guide portion 60 and the guided portion 62 shown in FIG. 6 can be combined with each other.

With reference to FIG. 6A, here, the protrusion 68 is formed by partially projecting the guided portion 62 toward the guide portion 60. The protrusion 68 projects in a substantially circular shape. Further, the guide portion 60 has a rectangular shape having side sides substantially parallel to the extending direction of the guided portion 62. Two guide portions 60 are formed corresponding to each guided portion 62. With such a configuration, the protrusion 68 of the guided portion 62 and the guide portion 60 can be brought into substantially point contact or the like.

With reference to FIG. 6B, the shape of the guide portion 60 is a substantially circular shape here. With such a configuration, the protrusion 68 and the guide portion 60 can be brought into contact with each other more reliably.

With reference to FIG. 6C, here, the protrusion 68 of the guided portion 62 has a rectangular shape. As a result, the side surface of the protrusion 68 of the rectangular guided portion 62 and the circular guide portion 60 come into substantially point contact with each other.

With reference to FIG. 6D, here, the protrusion 68 of the guided portion 62 has a rectangular shape. Further, here, the guide portion 60 has a rectangular shape in which the side surface in the longitudinal direction extends toward the side surface portion 51 of the blower cover 42. The guide portion 60 is formed as one member. Under operating conditions, the upper side surface of the guide portion 60 comes into point contact with the protrusion 68 on the upper side of the guided portion 62. Further, the lower side surface of the guide portion 60 makes point contact with the protrusion 68 on the lower side of the guided portion 62.

With reference to FIG. 6E, here, the guided portion 62 has a triangular shape and has an apex protruding toward the guide portion 60 side. The guide portion 60 corresponds to the guided portion 62 and has a curved plate shape that bends so as to be convex in a direction away from the guided portion 62. Further, a protrusion 69 is formed on the side surface of the guide portion 60 facing the guided portion 62. Under the operating conditions, the protrusion 68 of the guided portion 62 comes into point contact with the inclined side surface of the guide portion 60.

With reference to FIG. 6F, here, the guided portion 62 has a shape protruding toward the guide portion 60 side. The end portion of the guided portion 62 has a curved shape protruding toward the guide portion 60 side. Under operating conditions, the curved side surface of the guide portion 60 is in point contact with the inner side surface of the guided portion 62.

Further other forms of the guide portion 60 and the guided portion 62 will be described with reference to FIG. 7.

With reference to FIG. 7A, here, a quadrangular through hole 70 penetrating the guided portion 62 is formed, and a cylindrical guide portion 60 is arranged inside the through hole 70. Even with such a configuration, the side surface of the guide portion 60 comes into contact with the flat inner side surface of the through hole 70 at a substantially point point.

With reference to FIG. 7B, here, the through hole 70 has a rectangular shape, and a protrusion 71 protruding inward from the side wall of the through hole 70 is formed. Further, the guide portion 60 having a substantially rectangular shape is built in the through hole 70. In such a configuration, the side surface of the guide portion 60 comes into contact with the protrusion 71 of the guided portion 62.

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

10 Refrigerator 11 Insulation box body 12 Outer box 13 Inner box 14 Insulation material 15 Refrigerator room 16 Refrigerator room 17 Insulation door 18 Insulation door 19 Insulation partition wall 20 Cooling room 21 Air outlet 22 Return port 23 Air outlet 24 Return port 25 Refrigerator room Road 26 Refrigerator room return air passage 27 Cooler 28 Defrost heater 29 Refrigerator room supply air passage 30 Blower 31 Blower 32 Storage container 33 Storage container 34 Refrigerator room damper 35 Compressor 36 Partition plate 38 Opening 39 Screw hole 40 Shielding device 41 Shielding base 42 Blower cover 44 Drive shaft 45 Rubber member 49 Fridge 50 Main surface 51 Side 52 Support 53 Contact 54 Insertion hole 55 Blower fan 56 Fan support 57 Main surface 60 Guide 61 Support rib 62 Guided 63 1st contact structure 64 2nd contact structure 65 Opening 66 Rib 67 Cutting part 68 Protruding part 69 Protruding part 70 Through hole 71 Protruding part 100 Refrigerator 101 Refrigerator room 102 Refrigerator room 103 Vegetable room 104 Cooling room 105 Section wall 106 Opening part 107 Blower fan 108 Cooler 109 Blower 110 Blower cover 111 Recess 113 Opening 114 Damper 115 Guide pin 116 Guide hole

Claims (8)

A refrigerating cycle cooler that cools the air supplied to the storage chamber, a cooling chamber in which the cooler is arranged to form an air outlet connected to the storage chamber, and the air supplied from the air outlet. It comprises a blower that blows air toward the storage chamber, a shielding device that at least partially closes the air outlet, and a control device that controls the operation of the refrigerating cycle, the blower, and the shielding device.
The shielding device includes a blower cover that covers the blower, a drive mechanism that opens and closes the blower cover, and a guide unit that guides the opening and closing movement of the blower cover.
The blower cover has a main surface portion, a side surface portion, and a guided portion which is arranged radially outside the side surface portion and comes into contact with the guide portion.
The guide portion comes into contact with the guided portion from the outside in the radial direction, and the guide portion is in contact with the guided portion.
The guided portion and the guide portion have a first contact structure in which both are in contact with each other on one side in the circumferential direction of the blower cover, and a second contact structure in which both are in contact with each other on the other side in the circumferential direction of the blower cover. , Forming ,
The drive mechanism has a screw hole formed in the blower cover and a drive shaft screwed into the screw hole, and the drive shaft rotates in one direction so that the blower cover becomes the blower port. It becomes a non-closed state away from the above, and when the drive shaft rotates in the other direction, the blower cover becomes a closed state in which the blower port is closed.
When the drive shaft rotates in the one direction, the guided portion and the guided portion are in contact with each other in the first contact structure, and the guided portion and the guide are in contact with the second contact structure. Separated from the part,
When the drive shaft rotates in the other direction, the guided portion and the guided portion are in contact with each other in the second contact structure, and the guided portion and the guide are in contact with the first contact structure. A refrigerator characterized by being separated from the part . The guided portion has a concave shape that is recessed inward in the radial direction.
The refrigerator according to claim 1, wherein the guide portion has a convex shape protruding toward the guided portion. The guided portion has a convex shape protruding outward in the radial direction, and has a convex shape.
The refrigerator according to claim 1, wherein the guide portion has a concave shape that is recessed outward in the radial direction. The refrigerator according to claim 1, wherein a protrusion protruding toward the guide is formed on the guided portion. The guided portion is a through hole formed in the blower cover, and is a through hole.
The guide portion is arranged inside the through hole of the blower cover.
The refrigerator according to claim 1, wherein the first contact structure and the second contact structure are formed by contacting an inner wall of the through hole with the guide portion. The guide portion is erected from the main surface portion of the shielding base that supports the blower cover toward the blower cover.
The refrigerator according to any one of claims 1 to 5, wherein an opening is formed in a portion of the shielding base on which the guide portion is erected. The refrigerator according to any one of claims 1 to 6, wherein the blower cover has a rib that covers the guided portion from the outside in the radial direction. The refrigerator according to claim 7, wherein the end portion of the rib on the blower side is arranged more away from the blower than the end portion of the side surface portion on the blower side.

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