JP2018077036A - Damper device and refrigerator using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a damper device capable of suppressing failure in which opening/closing becomes impossible due to freezing, and to provide a refrigerator.SOLUTION: A damper device includes a frame body having a first opening 70c, a monitor unit 72 for refrigeration damper drive, and a plurality of flaps 71 provided being arranged side by side vertically in a position opposing to the first opening 70c, and each of the plurality of flaps 71 is rotated by the motor unit 72 for refrigeration damper drive. In a state where the plurality of flaps 71 are closed, each of the plurality of flaps 71 is inclined with respect to the first opening 70c.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a damper device and a refrigerator in which a damper device is installed in a freezer compartment duct.

  Generally, a refrigerator generates cold air in a cooling room on the back of the refrigerator body, and circulates the cold air to a refrigerator room, a freezer room, a vegetable room, etc. by a cooling fan to cool food in each room. There is a refrigerator that adjusts the amount of refrigerated air and a refrigeration chamber damper that controls the amount of chilled air circulation to the freezer to efficiently cool the refrigerator and freezer (for example, , See Patent Document 1).

JP 2011-7451 A

  However, in the conventional refrigerator, the condensed water adhering to the freezer damper may freeze, and the freezer damper may not be fully opened or closed.

  This invention solves the said conventional subject, and it aims at providing the damper apparatus and refrigerator which can suppress the malfunction which does not open and close by freezing.

  In order to solve the above-described conventional problems, a damper device of the present invention includes a frame having an opening, a driving unit, and a plurality of flaps arranged in a vertical direction at a position facing the opening, Each of the plurality of flaps is rotated by the drive unit between a first state in which the opening is opened and a second state in which the ventilation resistance of the opening is greater than that in the first state. In the second state, each of the plurality of flaps is inclined with respect to the opening.

  The damper device and the refrigerator of the present invention can suppress a problem that the damper device does not open and close due to freezing.

Front view of the refrigerator in Embodiment 1 of the present invention The front view which shows the inside of the refrigerator in the embodiment Sectional drawing of the refrigerator in the same embodiment Explanatory drawing explaining the cold air flow of the refrigerator in the embodiment Sectional drawing which shows the defrosting device periphery of the refrigerator in the embodiment (A) a perspective view of a freezer compartment damper in the same embodiment, (b) a cross-sectional view with the flap closed, (c) a cross-sectional view with the flap open The schematic diagram explaining the state in which the water droplet adhering to the flap of the freezer compartment damper in the same embodiment falls (A) a perspective view of a freezer damper in a modification of the embodiment, (b) a cross-sectional view with the flap closed, and (c) a cross-sectional view with the flap open.

  1st invention is provided with the frame which has an opening, a drive part, and a plurality of flaps arranged in the up-and-down direction in the position facing the opening, and each of the plurality of flaps, A damper device that is rotated by the drive unit between a first state in which the opening is opened and a second state in which the ventilation resistance of the opening is greater than that in the first state, the second state being Each of the plurality of flaps is inclined with respect to the opening.

  According to this, the water droplet adhering to the upper surface of one flap falls on the upper surface of the flap adjacent to the lower part of the said flap. For this reason, it can suppress that water bridge | crosslinks between the said flap and the flap adjacent below the said flap, or it freezes.

  In a second aspect based on the first aspect, at least one of the plurality of flaps is provided with a predetermined interval between the flap and an adjacent flap.

  According to this, it can suppress more that water bridge | crosslinks or freezes between this flap and the flap adjacent below the said flap.

  In a third aspect based on the first aspect, in the second state, the lower edge of the opening is positioned below the lower end of the lowermost flap among the plurality of flaps.

  According to this, the air passing through the lower portion of the first opening portion causes water to bridge or freeze between the lowermost flap and the frame located below the flap. Can be suppressed.

  In a fourth aspect based on the first aspect, the frame has a second opening below the opening. In the second state, the second opening includes the plurality of openings. It is provided in the position which opposes between the lower end of the lowermost flap among flaps, and the lower part of the said frame.

  According to this, it can suppress that water cross-links between the lowermost flap and the frame located under the flap by the air which passes through the 2nd opening, or it freezes. .

  According to a fifth aspect of the present invention, there is provided a freezing chamber, a cooling chamber in which a cooler that supplies cold air to the freezing chamber, and a fan are housed, and an air path that returns the cold air cooled in the freezing chamber to the cooling chamber. The damper device according to any one of the first to fourth aspects is provided.

  According to this, the malfunction which a damper apparatus does not open and close can be suppressed, and it can suppress that the poor cooling arises in a freezer compartment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a front view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a front view showing the inside of the refrigerator according to the embodiment, FIG. 3 is a cross-sectional view of the refrigerator according to the embodiment, and FIG. Explanatory drawing explaining the cool air flow of the refrigerator in the form of FIG. 5, FIG. 5 is sectional drawing which shows the defroster periphery of the refrigerator in the same embodiment.

  First, the whole structure of a refrigerator is demonstrated using FIGS.

  1 to 4, the refrigerator according to the present embodiment includes a refrigerator body 1 having an opening at the front. The refrigerator body 1 includes a metal outer box 2, a hard resin inner box 3, and the outside. It is comprised with the foam heat insulating material 4 filled with foam between the box 2 and the inner box 3, and the several storage chamber is partition-formed by the partition plates 5, 6 grade | etc.,. Each storage chamber of the refrigerator main body 1 is openable and closable by a rotary door 7 or drawer type doors 8, 9, 10, 11 adopting the same heat insulation structure as the refrigerator main body 1.

  The storage room formed in the refrigerator body 1 includes an uppermost refrigerating room 12, a switching room 13 provided under the refrigerating room 12, and a ice making room 14 provided beside the switching room 13. The freezing room 16 provided between the switching room 13 and the ice making room 14 and the lowermost vegetable room 15 is comprised. The refrigerating chamber 12 is provided with a plurality of shelf plates 17, and a lower portion thereof is provided with a partial chamber 18 and a chilled chamber 19 having different cooling temperature zones, which are stacked in two stages.

  The refrigeration room 12 is a storage room for refrigerated storage, and is cooled at a low temperature that does not freeze, specifically, usually 1 to 5 ° C. The partial chamber 18 provided in the refrigerator compartment is set to −2 to −3 ° C. suitable for microfrozen storage, and the chilled chamber 19 is set to a temperature around 1 ° C. lower than the refrigerator compartment 12 and higher than the partial chamber 18. Set and cooled.

  The vegetable room 15 is a storage room whose temperature is set equal to or slightly higher than that of the refrigerated room 12, and is specifically set to 2 to 7 ° C. and cooled. Since the vegetable compartment 15 becomes high humidity due to moisture emitted from stored food such as vegetables, condensation may occur if it is too cold locally. For this reason, the amount of cooling is reduced by setting the temperature relatively high, and the occurrence of condensation due to local overcooling is suppressed.

  The freezer compartment 16 is a storage room set in a freezing temperature zone, specifically, normally set at −22 to −18 ° C. and cooled, but for example, −30 ° C. and −25 for improving the frozen storage state. It may be cooled at a low temperature such as ° C.

  The switching chamber 13 is a storage chamber in which the temperature in the warehouse can be changed, and can be switched from a refrigeration temperature zone to a freezing temperature zone according to the application.

  On the other hand, a cooling chamber 20 is provided on the back surface of the freezing chamber 16, and a cooling device 21 for generating cold air and a cooling fan 22 for supplying the cold air to the chambers are installed in the cooling chamber 20. . Further, below the cooler 21, a defrosting means composed of a glass tube heater 23 or the like is provided.

  The cooler 21 is configured by connecting a compressor 24, a condenser (not shown), a heat radiating pipe (not shown), and a capillary tube (not shown) in a ring shape to constitute a refrigeration cycle. Then, cooling is performed by circulation of the refrigerant compressed by the compressor 24.

  Moreover, the cooling fan 22 is provided above the cooler 21, and the refrigerator compartment 12, the freezer compartment 16, the vegetable compartment 15, etc. are connected via the refrigerator compartment duct 25, the freezer compartment duct 26, the vegetable compartment duct 27 which are connected to the downstream side. Cooling air is supplied to each of these chambers to cool them.

  The cooling chamber 20 and the cold air supply configuration will be described with reference to FIGS. 4 and 5.

  A freezer compartment duct 26 communicating with the downstream side of the cooling fan 22 is provided on the front side of the cooling chamber 20. Further, on the downstream side of the cooling fan 22, a refrigerator compartment duct 25 communicating with the refrigerator compartment 12 and a vegetable compartment duct 27 communicating with the vegetable compartment 15 are separately and independently connected at different positions.

  More specifically, the upper part on the downstream side of the cooling fan 22 is connected to the refrigerator compartment duct 25 via a first cold air supply port 34 provided in the partition plate 5 that partitions the refrigerator compartment 12 and the freezer compartment 16. A vegetable compartment duct 27 is connected to a side of the upper portion of the cooling fan 22 on the downstream side by providing a second cold air supply port 35. Then, the cold air generated by the cooler 21 is supplied to the first cold air supply port 34 and the second cold air supply port 35 separately and independently by the cooling fan 22 and supplied to the refrigerator compartment duct 25 and the vegetable compartment duct 27. .

  The refrigerator compartment duct 25 is configured by covering the refrigerator compartment side surface of a duct member made of foamed polystyrene with a resin duct cover. The refrigerator compartment duct 25 is attached to the back of the refrigerator compartment so as to cover the first cold air supply port 34 and communicates with the cooling compartment 20.

  A refrigerator compartment damper 37 is incorporated in the first cold air supply port 34, and the amount of cold air supplied from the cooling chamber 20 to the refrigerator compartment 12 is controlled by opening and closing the refrigerator compartment damper 37. The refrigerating room damper 37 includes a refrigerating room damper unit that controls the amount of cold air supplied to the refrigerating room 12, a partial room damper unit that controls the amount of cold air supplied to the partial room 18, a refrigerating room damper unit, and a partial room. A damper drive motor unit that is provided between the damper unit and the damper unit for driving the refrigerator compartment and the partial chamber damper unit independently.

  The refrigeration chamber return duct 25 b that communicates with the refrigeration chamber duct 25 and returns the cold air that has cooled the refrigeration chamber 12 to the cooling chamber 20 is installed on the side (side) of the cooling chamber 20. The lower end side portion of the refrigerator compartment return duct 25 b is open to the lower side surface of the cooling chamber 20.

  The freezer compartment back plate 29 is provided with a plurality of cool air outlets (not shown) in the vertical direction, and the upper cool air outlet supplies the cool air to the ice making chamber 14 and the switching chamber 13 and the lower cool air outlet. The mouth supplies cold air to the freezer compartment 16.

  The freezer compartment back plate 29 is provided with a refrigerator cold air return port 64 communicating with the lower part of the cooling chamber 20 below the cold air outlet. As shown in FIG. 5, the freezing cold air return port 64 has a freezing chamber side mouth frame portion 65 projecting to the freezing chamber 16 side, and a freezing chamber side mouth frame portion 65 projecting to the freezing chamber 16 side, closer to the cooling chamber 20 side. And a cooling chamber side opening frame portion 66 located at the same position. Each frame of the freezer compartment side opening frame portion 65 and the cooling compartment side opening frame portion 66 is inclined so as to be located rearward, that is, on the cooling chamber 20 side as it goes upward with respect to the perpendicular. A grill 67 is provided on the inner side of the freezer compartment side frame 65. A freezer compartment damper 68 is provided inside the cooling chamber side opening frame portion 66.

  The grill 67 rectifies the cool air returning from the freezer compartment 16 to the cooling chamber 20. The grill 67 includes a plurality of horizontally long grill pieces 69 in the vertical direction. Each grille piece 69 is inclined so that the end on the cooling chamber 20 side is positioned above the end on the freezing chamber 16 side. Further, the lower the grill piece 69, the longer the front-rear length, that is, the length from the end on the freezer compartment 16 side to the end on the cooling chamber 20 side is longer.

  The freezer compartment damper 68 controls opening and closing of cool air supplied to the freezer compartment 16. The freezer compartment damper 68 is provided along the inclination of the cooling chamber side opening frame portion 66. That is, the freezer compartment damper 68 is provided so as to be inclined so that the cooling chamber 20 side is positioned below the freezer compartment 16 side.

  The freezer compartment damper 68 has an upper portion (upper portion of a flange portion 70b of a damper frame 70 described later) positioned above the lower end of the cooler 21, and a lower portion (lower side of the flange portion 70b of the damper frame 70). Is provided below the lower end of the cooler 21. As a result, the cold air that has passed through the open freezer compartment damper 68 flows into the lower end portion of the cooler 21.

  The structure of the freezer compartment damper 68 is demonstrated using FIG. 6 (a) is a perspective view of the freezer compartment damper 68, FIG. 6 (b) is a cross-sectional view of the freezer compartment damper 68 with the flap 71 closed, and FIG. 6 (c) is a flap view. It is a transverse cross section of freezer compartment damper 68 in the state where 71 was opened.

  As shown in FIG. 6A, the freezer compartment damper 68 includes a plurality of flaps 71, in this example, three flaps 71, in a damper frame 70. Each of the damper frame 70 and the flap 71 is formed of a heat resistant resin, for example, a polyphenylene sulfide resin (PPS resin).

  The damper frame 70 includes a front portion 70a that is a rectangular flat plate, and a flange portion 70b that is provided on the entire circumference of the front portion 70a and extends substantially vertically from the outer periphery of the front portion 70a. The front portion 70a is provided with a first opening 70c and a plurality of second openings 70d provided below the first opening 70c. The first opening 70c is provided with a plurality of vertical bars 70c1 that are divided into a plurality in the left-right direction.

  A plurality of flaps 71 are provided vertically at a position facing the first opening 70c. The plurality of second openings 70 d are provided below the lower end of the lowermost flap 71 among the plurality of flaps 71.

  The flap 71 is a rectangular plate that includes a shaft portion at the upper end portion in the short direction and is pivotally supported by a bearing portion (not shown) formed on the damper frame 70. The flap 71 is held by the flange portion 70b so that the axis of the flap 71 is in the horizontal direction (longitudinal direction of the front portion 70a). The freezer compartment damper 68 is configured such that, on the freezer compartment 16 side, each shaft of the plurality of flaps 71 is pivotally supported, and the lower side portion of the flap 71 opens to the cooling chamber 20 side (see FIG. 5). Each of the plurality of flaps 71 is driven by a refrigeration damper driving motor unit 72 fixed to one end of the damper frame 70.

  More specifically, the flap 71 includes a drive shaft portion below the shaft portion provided at the upper end portion. The drive shaft portions of the plurality of flaps 71 are connected to one connection link member. The connecting link member is operated by driving the refrigeration damper driving motor unit 72, and each of the flaps 71 opens and closes around the shaft portion.

  As shown in FIG. 6B, in the state where the flap 71 is closed, that is, in the second state, the flap 71 blocks a part of the first opening 70c, so that the ventilation resistance of the first opening 70c increases. The amount of air passing through the freezer compartment damper 68 is reduced.

  In the state where the flap 71 is closed, the lower side portions 71b of the three flaps arranged in the vertical direction are respectively in the height direction from the flange portion 70b (perpendicular to the front portion 70a, left and right in FIG. 6B). In the direction). That is, in the state where the flap 71 is opened, the three flaps arranged in the vertical direction are within the frame of the damper frame 70.

  When the flap 71 is closed, the lowermost flap 71 does not cover the second opening 70d. That is, when the flap 71 is closed, the second opening 70d is in an open state.

  On the other hand, as shown in FIG. 6C, in the state in which the flap 71 is opened, that is, in the first state, the amount of air passing through the freezer compartment damper 68 is reduced in the area where the flap 71 closes the first opening 70c. Will be more. In a state where the flap 71 is opened, each of the plurality of flaps 71 is substantially parallel to the flange portion 70b.

  In the state in which the flap 71 is opened, the lower side portions 71b of the three flaps arranged in the vertical direction are respectively higher than the flange portion 70b in the height direction (perpendicular to the front portion 70a, right and left in FIG. 6C). In the direction). That is, in the state where the flap 71 is opened, the three flaps arranged in the vertical direction are within the frame of the damper frame 70.

  As shown in FIG. 6B, in the state in which the flap 71 is completely closed, each of the plurality of flaps 71 is inclined with respect to the height direction of the damper frame 70. It is configured as follows. More specifically, each of the plurality of flaps 71 is configured to be inclined with respect to the front portion 70a so as to go upward as it goes to the front portion 70a of the damper frame 70. In other words, the upper side portion 71 a that is the side in the longitudinal direction on the upper end side of the flap 71 is pivotally supported on the front surface portion 70 a side of the damper frame 70 with respect to the lower side portion 71 b on the lower end side of the flap 71.

  The upper edge of the first opening 70c is provided below the lower side 71b of the flap 71 located at the uppermost position. Further, the lower edge of the first opening 70c is provided above the lower side 71b of the flap 71 located at the lowermost position (see FIG. 6B).

  When the plurality of flaps 71 are closed, a predetermined interval is provided in the front-rear direction between the lower side 71b of the upper flap 71 and the upper side 71a of the flap 71 adjacent to the lower side.

  Furthermore, when the freezer compartment damper 68 is provided to be inclined with respect to the refrigerator body 1, the upper side portion 71 a of the flap 71 positioned below the front portion 70 a than the lower side portion 71 b of the flap 71 adjacent to the upper side. It is pivotally supported on the side (see FIG. 5).

  Each of the plurality of flaps 71 is rotated by a refrigeration damper driving motor unit 72 between a state in which the flap 71 shown in FIG. 6B is closed and a state in which the flap 71 shown in FIG. 6C is opened. The rotation range is less than 90 degrees (see FIG. 6C).

  When the freezer compartment damper 68 is provided to be inclined with respect to the refrigerator main body 1, each of the plurality of flaps 71 is such that the end on the freezer compartment 16 side is located above the end on the cooling chamber 20 side. Inclined (see FIG. 5).

  Since the freezer compartment damper 68 is disposed between the cooling compartment 20 and the freezer compartment 16, it is cooled by cold air. For this reason, when relatively warm cool air returned to the lower side surface of the cooling chamber 20 through the refrigerator return duct 25b flows into the vicinity of the freezer damper 68 (see FIG. 3), the upper surface of the flap 71 (cooling) The water may condense on the chamber 20 side) or the damper frame 70.

  However, according to the present embodiment, as shown in FIG. 7, the condensed water adhering to the upper surface of the flap 71 (the surface on the cooling chamber 20 side) flows down the upper surface of the flap 71 toward the lower side portion 71b. And it falls to the lower side part 71b side from the center part of the upper surface of the flap 71 provided below. For this reason, it can suppress that dew condensation water bridge | crosslinks between the lower side part 71b of the flap 71, and the upper side part 71a of the flap 71 provided in the downward direction of the flap 71. FIG. For this reason, it can suppress that the dew condensation water hold | maintained between the several flaps 71 is cooled by the cooler 21, and it freezes. Accordingly, it is possible to suppress a problem that the flap 71 does not rotate. Further, by providing a predetermined interval in the front-rear direction, the size of the freezer damper 68 in the height direction can be made compact.

  Further, the flap covering the first opening is divided into a plurality of flaps 71 in the vertical direction, and each of the plurality of flaps 71 moves within the frame of the damper frame 70, so that the freezer compartment damper 68 can be made compact. . Further, there is no need to provide a movable space for the flap 71 between the freezer compartment damper 68 and the cooler 21 disposed at the rear, so that the cooling chamber 20 can be made compact and the interior space can be enlarged. It is desirable that the plurality of flaps 71 do not protrude from any flange portion 70b around (upper, lower, left, and right) the damper frame 70.

  Further, the lower end of the flap 71 is provided above the upper end of the flap 71 provided below the flap 71. Furthermore, it is desirable to provide a predetermined interval between the lower end of the flap 71 and the upper end of the flap 71 provided below the flap 71. According to this, it can suppress more that dew condensation water freezes between the some flaps 71. FIG.

  As shown in FIG. 6A, a second opening 70d is provided below the front portion 70a. Due to the flow passing through the second opening 70d, it is possible to suppress the dew condensation water from staying between the lower end of the lowermost flap 71 and the lower flange 70b among the plurality of flaps 71. For this reason, it can suppress that dew condensation water freezes between the lowermost flap 71 among the some flaps 71, and the lower flange part 70b. The plurality of flaps 71 have been described as three flaps in the vertical direction. However, the number of the plurality of flaps 71 may be any number as long as it is two or more. Further, as long as a predetermined interval can be secured between the adjacent flaps 71 so that the dew condensation water does not crosslink, the flaps 71 are not inclined with respect to the damper frame 70 as described above. You may arrange | position in parallel with respect to the 1st opening part 70c of the damper frame 70. FIG.

  Further, a plurality of second openings 70d may be connected to form one horizontally long opening extending in the left-right direction of the front part 70a. In this case, it is desirable that the lateral width of the second opening 70d is substantially equal to the lateral width of the first opening 70c.

  Further, as shown in FIG. 8, each of the plurality of second openings 70d is a first one located above the second opening 70d among the plurality of first openings 70c partitioned by the vertical beam 70c1. You may connect with the opening part 70c. In other words, the lower edge of the first opening 70c may be provided below the lower side 71b of the flap 71 located at the lowermost position (see FIG. 8B).

  Also in the embodiment shown in FIG. 8, as in the embodiment shown in FIG. 6, the plurality of flaps 71 are respectively between the closed state and the opened state of the flaps 71 within the frame of the damper frame 70. Therefore, the freezer damper 68 can be made compact. And the space in a warehouse can be enlarged.

  The above-described freezer damper 68 is provided only in the freezing cold air return port 64, and no cooler discharge passage from the cooling chamber 20 to the cold air outlet is provided with a damper, so that the cooling chamber 20 and the freezer chamber 16 are in communication with each other. It is kept in.

  Next, the indoor configuration of the cooling chamber 20 and the configuration around the glass tube heater 23 will be described with reference to FIGS.

  The cooling chamber 20 is formed on the back surface of the freezing chamber 16 by a cooling chamber forming plate 28 and an inner box 3 as shown in FIG. 5, and is cooled by mounting a cooling fan 22 on the upper portion of the cooling chamber forming plate 28. A cooling fan 22 is positioned above the vessel 21. A freezer compartment back plate 29 is attached to the front side of the cooling chamber forming plate 28 to cover the downstream side of the cooling fan 22 and to form a freezer compartment duct 26 communicating with the cooling fan downstream side between the cooling chamber 20. ing.

  Further, a heater cover 30 having an umbrella-like cross section that covers the glass tube heater 23 is installed below the cooler 21, and drainage for discharging defrost water to the outside on the bottom surface of the cooling chamber 20. A mouth 31 is provided. The heater cover 30 is provided with a shielding member 32 extending between the glass tube heater 23 and the freezer compartment back plate 29. The shielding member 32 has a plurality of slit holes. Further, the tip 33 of the shielding member 32 is located above the lower end of the glass tube heater 23 and below the upper end of the glass tube heater 23.

  Furthermore, the lower end of the freezer compartment back plate 29 is located above a virtual extension line connecting the lower end of the glass tube heater 23 and the tip 33 of the shielding member 32.

  Further, the upper surface of the heater cover 30 is inclined downward from the front (freezer compartment side) where the shielding member 32 extends toward the rear (back side).

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the temperature of the refrigerator compartment 12 becomes higher than the set temperature, the refrigerator drives the compressor 24 and the cooling fan 22 and supplies the cold air generated by the cooler 21 to the downstream side of the cooling fan 22.

  The cold air supplied to the downstream side of the cooling fan 22 is supplied to the refrigerating room duct through the refrigerating room damper from the first cold air supply port 34 opened on the upper upper surface on the downstream side of the cooling fan, and the left and right side portions of the refrigerating room duct The inside of the refrigeration chamber 12 is cooled by blowing into the refrigeration chamber 12 from the cold air outlet opened to the inside.

  The cold air supplied to the downstream side of the cooling fan 22 is also supplied to the vegetable room duct through the vegetable room damper from the second cold air supply port 35 opened on the upper side surface on the downstream side of the cooling fan. Is supplied to the vegetable compartment 15 from the lower end opening thereof to cool the inside of the vegetable compartment 15.

  Then, when the temperature of the vegetable room 15 set higher than the refrigerator temperature reaches the set temperature, the vegetable room damper is closed, the cold air supply to the vegetable room 15 is stopped, and the vegetable room is kept at the set temperature.

  Further, the cold air from the cooling chamber 20 is supplied to the freezing chamber 16 through the freezing chamber duct 26, and returns to the cooler 21 from the freezing cold air return port 64 in the lower front part of the cooling chamber 20.

  And in order to remove the frost adhering to the cooler 21 for every predetermined time cooling, it supplies with electricity to the glass tube heater 23, and is discharged | emitted from the drain outlet 31 out of the warehouse.

  At this time, the heater cover 30 is provided between the glass tube heater 23 and the cooler 21 so as to prevent the defrost water falling from the cooler 21 from dropping directly on the glass tube heater 23 below the cooler 21. Therefore, it is possible to suppress the evaporation sound when the defrost water is directly dropped onto the glass tube heater 23 and to suppress the temperature drop on the surface of the glass tube heater 23.

  Moreover, at the time of the above regular defrosting, the frost of the cooler 21 is removed by the radiant heat and convection from the glass tube heater 23, but at the same time, the radiant heat reaches the periphery other than the cooler 21. In particular, the resin-molded cooling chamber forming plate 28 has problems such as deformation when it exceeds the heat resistance temperature of the resin component. In the present embodiment, the heater cover 30 includes the glass tube heater 23 and the freezer compartment back plate 29. Since the shielding member 32 extending in between is provided, the temperature rise of the freezer compartment back plate 29 can be suppressed during defrosting, and deformation of the freezer compartment back plate 29 can be suppressed.

Further, since a plurality of slit holes are formed in the shielding member 32, it is possible to prevent hot air from being trapped in the space between the glass tube heater 23 and the heater cover 30.
An excessive temperature rise on the surface can be suppressed.

  Moreover, since the front end portion 33 of the shielding member 32 is located above the lower end of the glass tube heater 23 and below the upper end of the glass tube heater 23, the radiant heat from the glass tube heater 23 is directly applied to the freezer compartment back plate 29. It is possible to reliably prevent hitting.

  As described above, the damper device according to the present invention can be applied to uses such as a domestic refrigerator and a commercial refrigerator.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 4 Foam insulation material 5 Partition plate 7, 8 Door 12 Refrigeration room 13 Switching room 14 Ice making room 15 Vegetable room 16 Freezer room 17 Shelf board 18 Partial room (low temperature room)
19 Chilled room (low temperature room)
DESCRIPTION OF SYMBOLS 20 Cooling room 21 Cooler 22 Cooling fan 23 Glass tube heater 24 Compressor 25 Refrigeration room duct 25b Refrigeration room return duct 26 Freezer room duct 27 Vegetable room duct 28 Cooling room formation board 29 Freezing room back plate 30 Heater cover 31 Drain port 32 Shield member 33 Front end portion 34 First cold air supply port 35 Second cold air supply port 64 Refrigeration air return port 65 Freezer room side frame portion 66 Cooling chamber side port frame portion 67 Grill 68 Freezer compartment damper 69 Grill piece 70 Damper frame body 70a Front portion 70b Flange portion 70c First opening portion 70c1 Vertical beam 70d Second opening portion 71 Flap 71a Upper side portion 71b Lower side portion 72 Refrigeration damper driving motor unit

Claims (5)

A frame having an opening;
A drive unit;
A plurality of flaps arranged in a vertical direction at a position facing the opening;
With
Each of the plurality of flaps is a damper device that is rotated by the drive unit between a first state in which the opening is opened and a second state in which the ventilation resistance of the opening is greater than that in the first state. Because
In the second state, each of the plurality of flaps is inclined with respect to the opening.   The damper device according to claim 1, wherein at least one of the plurality of flaps is provided with a predetermined interval between the flap and an adjacent flap.   2. The damper device according to claim 1, wherein, in the second state, a lower edge of the opening is positioned below a lower end of a lowermost flap among the plurality of flaps. The frame has a second opening below the opening,
The said 2nd opening part was provided in the position which opposes between the lower end of the lowermost flap among these several flaps, and the lower part of the said frame in the said 2nd state. Damper device. A freezer room,
A cooler for supplying cool air to the freezer and a cooling chamber in which a fan is housed;
The refrigerator provided with the damper apparatus of any one of Claims 1-4 in the air path by which the cold air cooled by the said freezing room is returned to the said cooling room.