JP6970429B2 - 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. 7 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. 7, 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.

Japanese Unexamined Patent Publication No. 2013-2664

However, in the guide structure of the blower cover 110 shown in FIGS. 7 and 8, 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, referring to FIG. 7, when the blower cover 110 is brought into contact with the partition wall 105 in order to close the air passage, the moisture existing between the directional peripheral edge of the blower cover 110 and the partition wall 105. May freeze and the blower cover 110 may stick to the partition wall 105. If the blower cover 110 is fixed in this way, even if the driving motor applies a driving force to the blower cover 110, the blower cover 110 cannot be separated from the partition wall 105, and the air passage is changed or opened / closed. Is expected to be a problem that cannot be preferably performed.

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 freezing temperature zone, it is predicted that more water will adhere to the blower cover 110. The problems that have been solved become remarkable.

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 cooling cycle cooler for cooling 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 for covering the blower and a drive mechanism for opening and closing the blower cover, and the blower cover includes a main surface portion and a side surface portion erected from the main surface portion. , a first rib which projects outside the side surface of the side surface portion toward the partially outside, have a, the first rib side of shall be inclined downwardly in a direction away from the blower side It is characterized by.

Further, in the refrigerator of the present invention, the width of the first rib is narrowed in a direction away from the blower side.

Further, in the refrigerator of the present invention, the blower cover further has a second rib whose end side in the thickness direction of the side surface portion is thickened, and the end portion of the first rib is the second rib. It is characterized by being continuous with.

Further, in the refrigerator of the present invention, the shielding device is provided at the back side of a greenhouse where the indoor temperature can be changed from the refrigerating temperature zone to the freezing temperature zone.

The refrigerator of the present invention has a cooling cycle cooler for cooling 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 for covering the blower and a drive mechanism for opening and closing the blower cover, and the blower cover includes a main surface portion and a side surface portion erected from the main surface portion. , a first rib which projects outside the side surface of the side surface portion toward the partially outside, have a, the first rib side of shall be inclined downwardly in a direction away from the blower side It is characterized by. Therefore, since the moisture flows in the direction away from the blower side along the side side of the inclined first rib, it is suppressed that a large amount of moisture intervenes between the blower cover and the other member.

Further, in the refrigerator of the present invention, the width of the first rib is narrowed in a direction away from the blower side. Therefore, even when the shielding device is arranged upside down, the moisture can be moved in the direction away from the blower side along the side side of the first rib.

Further, in the refrigerator of the present invention, the blower cover further has a second rib whose end side in the thickness direction of the side surface portion is thickened, and the end portion of the first rib is the second rib. It is characterized by being continuous with. Therefore, the progress of the moisture transmitted along the side of the first rib to the blower side is blocked by the second rib, so that the moisture does not move to the end of the side surface portion and causes freezing and locking. can do.

Further, in the refrigerator of the present invention, the shielding device is provided at the back side of a greenhouse where the indoor temperature can be changed from the refrigerating temperature zone to the freezing temperature zone. Therefore, if the cloaking device is arranged on the inner side of the greenhouse, the temperature inside the greenhouse can be changed significantly, so that water droplets are likely to adhere to the cloaking device. In the present invention, since the first rib is formed on the surface of the blower cover of the shielding device, water droplets adhering along the first rib can be drained.

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 the figure which looked at the shielding device from the left, (C) is the shielding device. It is a view seen from the right, and (D) is a figure which looked at the shielding device from above. It is a figure which shows the shielding device which the refrigerator which concerns on embodiment of this invention has, (A) is the figure which shows the shielding device which arranged the opening facing downward, (B) is the figure which shows the shielding device of the state. It is a figure which shows 1 rib enlarged, (C) is the figure which shows the shielding device which arranged the opening facing upward, (D) is the figure which enlarges and shows the 1st rib of the shielding device in that state. It is a figure. It is a figure which shows the shielding device which the refrigerator which concerns on embodiment of this invention has, and is the perspective view which shows the blower cover in detail. 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.

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 the repeated description 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 indicate 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 vapor compression 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 changing greenhouse 15, a return port 22 communicating with the lower part of the changing 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. As shown in FIG. 1 (A), the lower portion of the refrigerating chamber 16 and the cooling chamber 20 communicate with each other by a 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 protrudes in a columnar shape toward the rear. 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 sliding in contact with the guided portion 62 of the blower cover 42.

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 freezing chamber supply air passage 29 and It passes through the 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. ..

Further, the defrosting process of the cooler 27 can be performed by closing the shielding device 40 and closing the refrigerating chamber damper 34 and energizing the defrosting heater 28.

The ribs formed on the blower cover 42 described above will be described with reference to FIG. 4 (A) is a plan view of the shielding device 40 viewed from the rear, FIG. 4 (B) is a view of the shielding device 40 shown in FIG. 4 (A) from the left, and FIG. 4 (C) is a view. Is a view of the shielding device 40 viewed from the right side, and FIG. 4D is a view of the shielding device 40 viewed from below on the paper surface. Here, hatching is provided to the first rib 65.

With reference to FIGS. 4 (A) and 4 (B), the first rib 65 is formed by partially projecting the side surface portion 51 of the blower cover 42 toward the outside in the radial direction. The first rib 65 is continuously formed from the front side end portion of the side surface portion 51 to the rear side end portion. The height at which the first rib 65 projects from the outer side surface of the side surface portion 51 toward the outside in the radial direction is, for example, about 1 mm. A plurality of first ribs 65 are formed on the outer side surface of the side surface portion 51 at substantially equal intervals in the circumferential direction of the blower cover 42. The first rib 65 has a shape in which its width gradually narrows toward the front.

Further, as shown in FIG. 4A, a covering rib 63 is formed on the left side portion of the side surface portion 51 of the blower cover 42 in order to protect the guided portion 62. The coated rib 63 integrally extends from the side surface portion 51 in a plate shape. In the present embodiment, the first rib 65 is not formed on the outer main surface of the coated rib 63. However, in order to increase the effect of removing the moisture adhering to the blower cover 42, the first rib 65 may be formed on the outer main surface of the coated rib 63.

With reference to FIG. 4C, a plurality of first ribs 65 are also formed on the right outer side surface of the side surface portion 51 of the blower cover 42. Although the coated rib 63 is also formed on the right side of the side surface portion 51, the first rib 65 is not formed on the outer side surface of the coated rib 63 here either.

With reference to FIG. 4D, a plurality of first ribs 65 are also formed on the upper side surface of the side surface portion 51 of the blower cover 42.

Here, referring 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, as a countermeasure for this, the above-mentioned first rib 65 is formed on the side surface portion 51 of the blower cover 42 to remove water.

The shape of the first rib 65 described above will be described in detail with reference to FIG. 5 (A) is a side view showing the shielding device 40 in which the opening 38 is arranged downward, and FIG. 5 (B) is an enlarged side view of the shielding device 40 in the state of FIG. 5 (A). It is a figure. 5 (C) is a side view showing the shielding device 40 arranged with the opening 38 facing upward, and FIG. 5 (D) is an enlarged side view of the shielding device 40 in the state of FIG. 5 (C). be. In FIGS. 5B and 5D, the horizontal line 69 is shown by a dotted line.

With reference to FIG. 5A, the first rib 65 is formed by partially projecting the outer side surface of the side surface portion 51 of the blower cover 42 outward in the radial direction. The first rib 65 is a rib extending in the front-rear direction, and has a tapered shape whose width becomes narrower toward the front, which is a direction away from the blower 31 described above. Further, as shown in FIG. 5B, the first rib 65 has an upper first side side 66 and a lower second side side 67. In other words, the first side side 66 and the second side side 67 are steps formed between the side surface portion 51 and the first rib 65. The first side side 66 is linearly inclined downward toward the front. Further, the second side side 67 is linearly inclined upward toward the front.

Therefore, even when the moisture generated under the operating condition of the refrigerator 10 adheres to the side surface portion 51 of the blower cover 42, the moisture moves forward along the first side side 66 of the first rib 65. In FIG. 5B, the direction in which the water progresses is indicated by an arrow. Therefore, it is possible to prevent moisture from adhering to the rear side of the side surface portion 51 of the blower cover 42. Therefore, even if the shielding device 40 is closed as shown in FIG. 3 (B) and the rear end portion of the shielding device 40 is brought into contact with the partition plate 36 as shown in FIG. 1 (B). It is possible to prevent a large amount of water from interposing between the shielding device 40 and the partition plate 36. Therefore, it is possible to prevent the movement of the blower cover 42 from being hindered by the freezing of this water.

It is also conceivable to dispose the shielding device 40 so that the opening 38 faces upward with reference to FIG. 5 (C). If the refrigerating chamber 16 is arranged above the cooling chamber 20 with reference to FIG. 1 (B), the shielding device 40 is used to blow the cold air cooled in the cooling chamber 20 to the refrigerating chamber 16 above. The opening 38 is arranged so as to face upward.

With reference to FIG. 5D, when the shielding device 40 is arranged upside down in this way, the second side side 67 of the first rib 65 is arranged on the upper side, and the first side side 66 is on the lower side. Placed in. In this case, the second side side 67 is linearly inclined downward toward the front. Further, the first side side 66 is linearly inclined upward toward the front. In such a case, the water adhering to the side surface portion 51 under the operating condition moves to the front side along the second side side 67 of the first rib 65. Therefore, even in this case, it is possible to prevent moisture from adhering to the rear end side of the side surface portion 51 in contact with the partition plate 36 described above.

As described above, in the present embodiment, the shielding device 40 is arranged so that the opening 38 is on the lower side, and the shielding device 40 is arranged so that the opening 38 is on the upper side. By moving the water forward along the 1 rib 65, it is possible to prevent the opening / closing operation of the shielding device 40 from being hindered due to freezing.

Here, in FIG. 5A, the front main surface and the rear main surface of the shielding device 40 are arranged so as to be parallel to the vertical direction, but the shielding device 40 is inclined so as to be inclined with respect to the vertical direction. May be disposed. Even in this case, referring to FIG. 5B, the first side side 66 of the first rib 65 is inclined downward toward the front.

FIG. 6 shows a perspective view of the blower cover 42. With reference to this figure, the second rib 68 is formed by continuously projecting the vicinity of the rear end of the side surface portion 51 of the blower cover 42 outward in a frame shape. The second rib 68 is formed over almost the entire rear end side of the side surface portion 51 except for the portion where the coated rib 63 is formed. The height at which the second rib 68 projects outward in the radial direction may be about the same as that of the first rib 65 described above, or may be higher than that of the first rib 65. By making the protruding height of the second rib 68 higher than the protruding height of the first rib 65, the effect of the second rib 68 to prevent the progress of water can be remarkable.

Further, the second rib 68 is not formed at the rearmost end portion of the side surface portion 51, but is formed at a position several mm away from the rearmost end portion of the side surface portion 51. By doing so, it is possible to suppress the thickness of the rearmost end portion of the side surface portion 51 and prevent a large amount of water droplets from adhering to the rearmost end portion of the side surface portion 51 under operating conditions. can.

As described above, a plurality of first ribs 65 for drainage are formed at equal intervals on the outer peripheral surface of the side surface portion 51 of the blower cover 42. The rear end of each first rib 65 is continuous with the second rib 68. With such a configuration, the second rib 68 can prevent the water droplets from traveling backward along the outer surface of the blower cover 42. That is, the second rib 68 has a dam-like function of blocking the backward progress of water.

Here, the front end of each first rib 65 may be terminated at the front end of the side surface portion 51, but may extend to the front surface of the main surface portion 50 of the blower cover 42. By doing so, the effect of draining water droplets forward along the first rib 65 can be increased.

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 Flange 50 Main surface 51 Side 52 Support 53 Contact 54 Insertion hole 55 Blower fan 56 Fan support 57 Main surface 60 Guide 62 Guided 63 Covered rib 65 1st rib 66 1st side side 67 2nd side side 68 2nd rib 69 Horizon 100 Refrigerator 101 Refrigerator room 102 Refrigerator room 103 Vegetable room 104 Cooling room 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 cooling cycle cooler for cooling 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 are provided. 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 has a blower cover that covers the blower, and a drive mechanism that opens and closes the blower cover.
The blower cover, possess the principal surface portion, and side portions provided upright from the main surface, a first rib which projects outside the side surface of the side portion partially towards the outside, the,
A refrigerator characterized in that the side side of the first rib is inclined downward toward a direction away from the blower side. The refrigerator according to claim 1, wherein the width of the first rib is narrowed in a direction away from the blower side. The blower cover further has a second rib whose end side in the thickness direction of the side surface portion is thickened.
The refrigerator according to claim 1 or 2, wherein the end portion of the first rib is continuous with the second rib. The refrigerator according to any one of claims 1 to 3 , wherein the cloaking device is arranged at the back side of a greenhouse in which the indoor temperature can be changed from the refrigerating temperature zone to the freezing temperature zone. ..

Images