JP7032268B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator.

In Patent Document 1, a discharge port for discharging cold air from the refrigerating room to the vegetable room is formed on a partition plate that separates the refrigerating room and the vegetable room. Further, a return port for cold air from the discharge port of the refrigerating room is provided on a partition plate that separates the refrigerating room and the vegetable room. Further, there is disclosed a refrigerator in which the return port of cold air flowing into the vegetable compartment from the refrigerating chamber through the return port provided in the partition plate is provided on the rear side of the vegetable container (FIG. 2 of Patent Document 1). ).

Japanese Unexamined Patent Publication No. 2017-36873

In Patent Document 1, in order to improve the circulation of cold air flowing in the refrigerator, for example, the return port of cold air is blocked by food or a packaging material for food to hinder the circulation of cold air, thereby lowering the cooling performance. There is a possibility that it will end up.

The present invention includes a discharge port for discharging cold air to the refrigerated temperature zone chamber, a storage container housed in the refrigerated temperature zone chamber, and a return port for circulating the cold air discharged to the refrigerated temperature zone chamber. In the refrigerator, a convex portion was formed on the inflow side of the return port.

According to the present invention, it is possible to prevent the return port of cold air from being blocked by food or a packaging material for food and obstructing the circulation of cold air, and it is possible to provide a refrigerator in which deterioration of cooling performance is suppressed.

It is a front view of the refrigerator in 1st Embodiment. It is a vertical sectional view of the refrigerator of FIG. It is an exploded perspective view of a storage container and a lid body. FIG. 3 is a cross-sectional view taken along the line AA of FIG. (A) is a front view showing an upper container, and (b) is a sectional view taken along line BB of (a). It is a vertical sectional view which looked at the refrigerating room of the refrigerator in this embodiment from the right. It is a perspective view which looked at the refrigerating room of the refrigerator in this embodiment from the front. It is a top view of the refrigerator in 2nd Embodiment. 8 is a cross-sectional view taken along the line AA of FIG.

Hereinafter, the refrigerator according to the embodiment of the present invention will be described in detail with reference to the drawings. Further, in the following, a three-door type refrigerator divided into three spaces will be described as an example, but it may be applied to a type refrigerator divided into two spaces, and a type divided into four or more spaces. May be applied to the refrigerator.

(First Embodiment)
FIG. 1 is a front view of the refrigerator according to the first embodiment.

As shown in FIG. 1, the refrigerator 100A includes a refrigerator main body 1 and a plurality of doors 5, 6 and 7 provided on the front surface thereof. The door 5 is located at the upper stage and is a rotary type. The door 6 is located in the middle stage and is a drawer type. The door 7 is located at the lower stage and is a drawer type.

FIG. 2 is a vertical sectional view of the refrigerator of FIG. Note that FIG. 2 is schematically shown.

As shown in FIG. 2, the refrigerator main body 1 is composed of, for example, a steel plate outer box 8, a resin inner box 9, and a foamed heat insulating material 10 filled between the outer box 8 and the inner box 9. In order from the top, a refrigerating room 2 which is an upper refrigerating temperature zone room, a vegetable room 3 which is a lower refrigerating temperature zone room, and a freezing room 4 which is a freezing temperature zone room are configured. If it is necessary to improve the heat insulating performance, a vacuum heat insulating material (not shown) is installed together with the foam heat insulating material 10.

For example, the set temperatures of the refrigerating room 2 and the vegetable room 3 are set in the temperature range of 0 ° C. to 5.0 ° C., and the freezing room 4 is set in the temperature range of −18 ° C. to −20 ° C. Therefore, the vegetable compartment 3 and the freezing chamber 4 are partitioned by a heat insulating partition wall 11. Further, since the set temperature zone is close to the refrigerating room 2 and the vegetable room 3, it is partitioned by a partition wall 12 that does not include a heat insulating material. Further, the partition wall 12 is formed with a discharge port 12a for discharging cold air from the refrigerator compartment 2 to the vegetable compartment 3.

On the front surface of the refrigerator body 1, as described above, the doors 5, 6 and 7 are packed with respect to the front opening edges, respectively, in order to block the front openings of the refrigerating room 2, the vegetable room 3 and the freezing room 4. It is provided via (not shown). The door 5 closes the front opening of the refrigerator compartment 2, the door 6 closes the opening of the vegetable compartment 3, and the door 7 closes the front opening of the freezing chamber 4.

Further, the pull-out type door 6 has a structure of pulling out together with a storage container 40 provided in the vegetable compartment 3. Further, the pull-out type door 7 also has a structure in which the drawer type door 7 is pulled out together with the storage container 50 provided in the freezing chamber 4.

Further, the refrigerator body 1 is equipped with a refrigerating cycle. This refrigeration cycle consists of a compressor 13, a condenser (not shown), a capillary tube (not shown), a cooler 14, and an annular refrigerant pipe (not shown) connecting them in sequence. There is. Further, the cooler 14 is installed in the cooler room 15 provided on the back surface of the vegetable room 3. A blower fan 16 is installed above the cooler 14 in the cooler chamber 15. Further, a refrigerating room back panel 18 is provided on the back surface of the refrigerating room 2. The refrigerating chamber rear panel 18 is provided with a cold air passage 17 for passing cold air supplied from the blower fan 16. Further, in the refrigerating chamber back panel 18, cold air blowing holes 18a for blowing cold air through the cold air passage 17 into the refrigerating chamber 2 are formed at a plurality of locations at intervals in the vertical direction.

In the refrigerator 100A, the cold air cooled by the cooler 14 and via the cold air amount control damper (not shown) is supplied to the refrigerating chamber 2 from the cold air passage 17 and the cold air outlet hole 18a, and is supplied to the refrigerating chamber 2 as a storage space of the refrigerating chamber 2. To cool to the set temperature range. Then, the cold air in the refrigerating chamber 2 is supplied to the vegetable compartment 3 through the circulation discharge port 12a, and the storage space of the vegetable compartment 3 is cooled to the set temperature zone. In this way, the cold air that cools the vegetable compartment 3 becomes the cold air after passing through the refrigerating chamber 2. Then, the cold air in the vegetable compartment 3 returns to the cooler chamber 15 via the cold air return port (first return port) 3a provided on the back surface of the vegetable compartment 3 (rear of the storage container 40). ing. The freezing chamber 4 is configured so that cold air circulates through a cooling flow path (not shown).

Further, in the refrigerating room 2, a plurality of shelves 19, 20, 21 and 22 made of a transparent resin plate or a glass plate are installed. Further, a drawer-type storage tray 23 is provided under the lowermost shelf 22. In addition, instead of the storage tray 23, a drawer-type storage tray having a decompression storage chamber constituting a closed space for maintaining the freshness of food and storing it for a long period of time may be provided.

The circulation discharge port 12a formed on the partition wall 12 is located on the front side of the rear cold air guide portion 45a, which will be described later. If the position of the discharge port 12a is too far forward, the user visually recognizes the discharge port 12a and the appearance design is deteriorated. In addition, food residues and liquids in the refrigerating chamber 2 may flow down from the discharge port 12a to the vegetable compartment 3 side, resulting in deterioration of hygiene. Further, the cold air that has cooled the inside of the refrigerating chamber 2 is blown out to the vegetable compartment 3 side without cooling the bottom surface of the storage tray 23.

FIG. 3 is an exploded perspective view of the storage container and the lid.

As shown in FIG. 3, the storage container 40 stored in the vegetable compartment 3 is composed of a lower container 41 and an upper container 42. Further, the upper opening of the storage container 40 is covered with a lid plate (cover body) 43A in a substantially sealed state. In the vegetable compartment 3 (see FIG. 2), the lower container 41 and the upper container 42 are retractably stored in the front-rear direction. The lid plate 43A covers the upper openings of the lower container 41 and the upper container 42, and is fixed to the partition wall 12 of the refrigerator main body 1. Therefore, even if the lower container 41 and the upper container 42 are pulled out, the position of the lid plate 43A does not change.

The lower container 41 has a substantially square box shape with an open upper surface, and is resin-molded by a front plate 41a, side plates 41b, 41b, a back plate 41c, and a bottom plate 41d. The back plate 41c is formed so that the height from the bottom plate 41d is lower than that of the front plate 41a and the side plates 41b and 41b. Further, in the lower container 41, the entire upper portion of the front plate 41a and the upper front portions of the side plates 41b and 41b are formed so that the height from the bottom plate 41d is one step higher than that of the upper rear portion of the side plates 41b.

The upper container 42 has a substantially square box shape and a flat shape with an open upper surface, and is resin-molded by a front plate 42a, side plates 42b, 42b, a back plate 42c, and a bottom surface 42d. Further, on the outer surface of the left and right side plates 42b of the upper container 42, flanges 42b1 extending in the front-rear direction (only the right side is shown) are formed. The flange 42b1 is supported by the upper edge of the side plate 41b of the lower container 41, and the upper container 42 is slidably configured in the front-rear direction. The left and right side walls (side surfaces) constituting the vegetable compartment 3 (see FIG. 2) are provided with slide rails (not shown) for supporting the flange 42b1 when the lower container 41 is pulled out.

Further, a handle 46 having a platinum catalyst 60 (see FIG. 5B) is attached to the front plate 42a of the upper container 42. Details of the handle 46 will be described later.

The lid plate 43A is made of synthetic resin and is formed in a substantially rectangular shape in a plan view from above. Further, the lid plate 43A is formed with a rectangular opening 43a. A lattice portion 43b is integrally formed in the opening portion 43a. Further, the opening 43a is formed to the right in the left-right direction. By providing the lid plate 43A in this way, it is possible to prevent the storage (fruits and vegetables, etc.) in the storage container 40 from being directly exposed to cold air, and it is possible to prevent the storage from drying.

Further, a transpiration board 44 (moisture storage / release member) is attached to the opening 43a.
The evaporation board 44 is a flat plate-shaped member formed by weaving resin fibers such as PET fibers, and has a function of allowing air to pass through but absorbing and retaining liquid moisture. Further, the evaporation board 44 is capable of evaporating (releasing) moisture absorbed (retained) with respect to air.

Further, the evaporation board 44 is supported by the lower surface of the evaporation board 44 being in contact with the lattice portion 43b formed in the opening 43a. Further, in the evaporation board 44, the edge portion of the evaporation board 44 is held by the claw portions 43c, 43c, 43d, 43d provided on the peripheral edge portion of the opening 43a. With such a configuration, the transpiration board 44 is stably held by the lid plate 43A. Further, by holding the evaporation board 44 between the claw portions 43c and 43d and the lattice portion 43b, the evaporation board 44 can be attached and detached, and the evaporation board 44 can be replaced.

In the present embodiment, the evaporation board 44 is held by the grid portion 43b and the claw portions 43c, 43d, but the configuration is not limited to such a configuration, and the evaporation board 44 is insert-molded into the lid plate 43A. It may be configured by.

Further, hooks 43e, 43e, 43f for attaching the lid plate 43A to the partition wall 12 are projected upward on the upper surface of the lid plate 43A. The hooks 43e and 43e are located on both the left and right sides on the front side of the lid plate 43A. Further, the hook 43e is located in front of the evaporation board 44. The hook 43f is located behind the evaporation board 44 and in the center of the lid plate 43A in the left-right direction. By arranging the hooks 43e and 43f at such positions, the lid plates 43A can be stably fixed to the partition wall 12 with the minimum necessary number. Although not shown, the partition wall 12 (see FIG. 2) is formed with hooking portions (claw, hole, etc.) for hooking the hooks 43e, 43e, 43f.

Further, on the upper surface of the lid plate 43A, a rear cold air guide portion 45a as a cold air guide portion and side cold air guide portions 45b and 45b as other cold air guide portions are provided around the opening 43a. The rear cold air guide portion 45a and the side cold air guide portion 45b have elasticity formed by urethane foam and are formed in a square columnar shape. Further, the rear cold air guide portion 45a is arranged along the trailing edge of the opening 43a, and the side cold air guide portion 45b is arranged along the left side edge and the right side edge of the opening portion 43a, respectively.

The rear cold air guide portion 45a is located on the rear side of the discharge port 12a (see FIG. 2). In the present embodiment, the rear cold air guide portion 45a is divided into two left and right because the hook 43f is located in the middle of the longitudinal direction (left-right direction) of the rear cold air guide portion 45a. The position of the rear cold air guide portion 45a may be changed to the rear so as to integrally form the rear cold air guide portion 45a.

The side cold air guide portion 45b is positioned so that the rear end is in contact with the left end portion (right end portion) of the rear cold air guide portion 45a, and further extends forward from the left end portion (right end portion) of the opening 43a. In this way, the rear side of the evaporation board 44 is closed by the rear cold air guide portion 45a, and the left and right sides are closed by the side cold air guide portions 45b and 45b, thereby exhibiting a U-shape in an upward plan view with the front open. It is configured as follows.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. Note that FIG. 4 shows a state in which the lid plate 43A is attached to the partition wall 12 (indicated by a virtual line).

As shown in FIG. 4, when the lid plate 43A is attached to the partition wall 12, the rear cold air guide portion 45a and the side cold air guide portion 45b come into close contact with the lower surface 12b of the partition wall 12. That is, the height dimension H1 (see FIG. 3) of the rear cold air guide portion 45a and the side cold air guide portion 45b before attaching the lid plate 43A to the partition wall 12 from the lid plate 43A is such that the lid plate 43A is attached to the partition wall 12. From the lid plate 43A when attached to the lower surface 12b of the partition wall 12, the height dimension H2 (see FIG. 4) is formed higher (longer) than the height dimension H2. As a result, when the lid plate 43A is attached to the partition wall 12, the rear cold air guide portion 45a (urethane foam) and the side cold air guide portion 45b (urethane foam) are elastically deformed and pressed against the lower surface 12b of the partition wall 12. Therefore, the rear cold air guide portion 45a and the side cold air guide portion 45b can be brought into close contact with the partition wall 12. As a result, it is possible to prevent the cold air from flowing to the outside of the rear cold air guide portion 45a and the side cold air guide portion 45b, and to reliably guide the cold air to the front side of the lid plate 43A.

Further, the rear cold air guide portion 45a is located on the rear side of the discharge port 12a, and the evaporation board 44 is arranged on the front side of the rear cold air guide portion 45a. As a result, the cold air discharged from the discharge port 12a to the vegetable compartment 3 can be blocked from flowing backward by the rear cold air guide portion 45a, and the cold air moves forward (front side of the storage container 40). It will be easier to be guided. Further, by providing the side cold air guide portion 45b, the cold air is surely guided to the front side of the storage container 40 (the front side of the storage container 40). As shown in FIG. 2, the cold air guided to the front side of the storage container 40 flows between the storage container 40 and the door 6, and the space between the storage container 40 and the heat insulating partition wall 11 is directed from the front to the rear. After flowing, it returns to the cooler chamber 15 from the return port 3a provided at the rear of the storage container 40.

Further, the rear cold air guide portion 45a is located on the rear side of the discharge port 12a and on the rear side of the center of the refrigerator body 1 in the front-rear direction, so that the cold air returns from the discharge port 12a to the return port 3a. Since the moving distance can be lengthened, the temperature of the cold air can be raised, and it becomes possible to suppress the occurrence of dew on the inner wall surface of the storage container 40. Further, since the lower surface of the lid plate 43A is located on the side close to the door 6 and away from the cooler 14, it is difficult to be cooled and the occurrence of dew can be suppressed.

Further, since the evaporation board 44 is provided on the front side of the rear cold air guide portion 45a, the cold air discharged from the discharge port 12a flows so as to lick the surface (upper surface) of the evaporation board 44. As a result, the moisture absorbed (occluded) in the evaporation board 44 becomes water vapor and is released into the passing cold air (cold air). That is, the water W in the vegetable chamber 3 is absorbed by the evaporation board 44, and the absorbed moisture is discharged to the outside of the vegetable chamber 3 from the discharge port 12a or the like via the evaporation board 44. Therefore, it is possible to suppress the humidity in the storage container 40 from becoming too high, and it is possible to suppress the occurrence of dew on the wall surface of the storage container 40. This prevents dew from coming into contact with the stored material (leafy vegetables, etc.) and enables long-term storage of the stored material.

5 (a) is a front view showing an upper container, and FIG. 5 (b) is a sectional view taken along line BB of (a).

As shown in FIG. 5A, a handle 46 made of synthetic resin is attached to the front plate 42a of the upper container 42 as a separate member. The handle 46 is formed with a recess 46a so as to form a gap between the handle 46 and the lid plate 43A (see FIG. 3). As a result, when the door 6 is pulled out, the user inserts his / her hand into the recess 46a and puts his / her hand on the handle 46, so that the upper container 42 can be slid back and forth.

As shown in FIG. 5B, the handle 46 is formed of an opaque resin and has a front plate 46b extending in the vertical direction and a back plate 46c extending in the vertical direction behind the front plate 46b in a vertical cross-sectional view. The upper plate 46d connecting the upper end of the front plate 46b and the upper end of the back plate 46c is formed in a gate shape. As a result, the handle 46 is attached to the upper container 42 so that the concave surface has a downward shape.

On the front plate 42a of the upper container 42, a catalyst accommodating portion 42e for accommodating a platinum catalyst is resin-molded integrally with the front plate 42a. The catalyst accommodating portion 42e protrudes forward from the front surface of the front plate 42a located at the lower portion. Further, the catalyst accommodating portion 42e has a concave portion 42f with the concave surface facing upward. A through hole 42g that penetrates in the vertical direction is formed on the bottom surface of the concave portion 42f. The through holes 42g are not limited to one place, but are formed at a plurality of places at intervals in the vertical direction of the paper surface in FIG. 5 (b).

The handle 46 is attached to the catalyst accommodating portion 42e so that the front plate 46b is in contact with the front surface of the concave portion 42f, the back plate 46c is in contact with the rear surface of the concave portion 42f, and the upper plate 46d is located above the concave portion 42f. .. As a result, the platinum catalyst 60 communicates with the outside of the catalyst accommodating portion 42e through the through hole 42g. By covering the front and rear surfaces and the upper surface of the platinum catalyst 60 in this way, it is possible to prevent water and the like from adhering to the platinum catalyst 60 and prevent the catalyst function from being impaired. Further, by covering the catalyst accommodating portion 42e with the opaque handle 46, it is possible to prevent the platinum catalyst 60 from being visually recognized from the outside. Further, the platinum catalyst 60 can be replaced by detachably configuring the handle 46 in the upper container 42.

Unlike the photocatalyst, the platinum catalyst 60 is a catalyst that decomposes ethylene and trimethylamine contained in the air in each space even without light such as an LED. Ethylene is decomposed by the platinum catalyst 60 to generate carbon dioxide and water vapor. Further, the platinum catalyst 60 is in the form of pellets and is housed in the catalyst housing portion 42e in a state of being packed in a bag 61 (see FIG. 5B). As a result, the pellet-shaped platinum catalyst 60 is appropriately mixed in the bag 61 when the upper container 42 is withdrawn and accommodated. Therefore, air is prevented from coming into contact with the pellet from only one direction, and the catalytic function is maintained. The catalyst accommodated in the catalyst accommodating portion 42e is not limited to the platinum catalyst 60, and other transition metal catalysts may be used.

Ethylene gas generated from vegetables and the like placed in the lower container 41 is decomposed by coming into contact with the platinum catalyst 60 through the through hole 42 g, and carbon dioxide is generated. When the door 6 is closed and the storage container 40 is stored in the vegetable compartment 3, the lower container 41 and the upper container 42 are substantially sealed by the lid plate 43. Further, since the platinum catalyst 60 is located at the boundary between the lower container 41 and the upper container 42, the generated carbon dioxide fills both the inside of the lower container 41 and the inside of the upper container 42 through the through hole 42 g. As a result, the pores of the vegetables stored in the spaces of the lower container 41 and the upper container 42 are closed, the respiration of the vegetables is suppressed, and the decrease in nutritional components and the drying due to respiration are suppressed, so that the freshness of the vegetables is long. Be maintained. The place where the platinum catalyst 60 is installed is not limited to the inside of the handle 46, and a catalyst storage portion may be provided in each of the lower container 41 and the upper container 42, and the platinum catalyst may be stored in the catalyst storage portion.

Further, when carbon dioxide is dissolved in water existing on the surface of vegetables and the like stored in the vegetable chamber 3, the surface of the vegetables and the like becomes acidic. However, when trimethylamine showing alkalinity is generated when dissolved in water, trimethylamine also dissolves in the water existing on the vegetable surface, so that the acidified vegetable surface is neutralized by the dissolution of carbon dioxide. However, in the refrigerator 100A, trimethylamine is decomposed by the platinum catalyst 60, so that the surface of vegetables and the like stored in the vegetable chamber 3 becomes acidic, and the growth of microorganisms on the vegetable surface is suppressed.

Further, when the lower container 41 and the upper container 42 are housed in the refrigerator 100A, the lid plate 43 covers the entire opening of the lower container 41 and the opening of the upper container 42, so that the inside of these spaces is covered. The airtightness of the is enhanced. Therefore, the carbon dioxide concentration inside the storage container 40, that is, not only the lower container 41 but also the upper container 42, can be maintained at 1000 ppm or more.

In the present embodiment, since trimethylamine, which is an alkaline gas, is decomposed in a short time by the platinum catalyst 60, it is possible to suppress the neutralization of the surface of vegetables acidified by the dissolution of carbon dioxide and increase the acidity of the surface. It will be possible. That is, when vegetables are stored in the storage container 40, the pH of the surface thereof is conventionally increased, whereas in the present embodiment, the pH of the surface is decreased. As a result, enzymes and microorganisms generated on the surface of vegetables are suppressed, and the progress of putrefaction is suppressed. In addition, since carbon dioxide is also generated when trimethylamine is decomposed, the effect of increasing carbon dioxide is higher than that in the case of using a photocatalyst. As a result of actual experiments, it was found that when the platinum catalyst 60 was used, the carbon dioxide generation capacity was about twice that when the photocatalyst was used. Therefore, it is possible to increase the carbon dioxide inside even in a wide area.

Next, the structure of the first return port 3a, which is the present embodiment, will be described in detail with reference to FIGS. 6 and 7. A cooling panel 70 is arranged on the front surface of the blower fan 16 that circulates the cold air generated from the cooler 14. A heat insulating partition wall 11 is arranged at the lower end of the cooling panel 70. The first return port 3a is formed at a position behind the heat insulating partition wall 11 and higher than the upper end portion (bottom surface of the storage chamber) of the heat insulating partition wall 11. A plurality of convex portions 71 are provided on the front surface side of the first return port 3a. The convex portion 71 of the present embodiment has a shape that extends in the vertical direction, but the shape is not limited to this, and a shape that extends in the horizontal direction is also conceivable. Since the front-rear tip of the convex portion 71 is formed longer than the rearmost end portion 72 of the storage container 40, the first return port may be a plastic bag or the like that falls from the rearmost end portion 72 of the storage container 40. It is possible to make it difficult to close the opening of 3a.

However, if the length of the convex portion 71 is too long, when the storage container 40 is stored in the storage chamber, it may come into contact with the rear end portion of the storage container 40, causing a problem. Therefore, the length of the convex portion 71 is smaller than the distance (X) from the cooling panel 70 to the rear end portion of the storage container 40 (when the storage container 40 is stored in the storage chamber).

The first return port 3a of this embodiment is near the upper end portion of the heat insulating partition wall 11. The term "nearby" here means that the distance between the lower end of the first return port 3a and the upper end of the heat insulating partition wall 11 is smaller than the opening height of the first return port 3a.

Next, the second embodiment will be described with reference to FIGS. 8 and 9. The second embodiment proposes a structure in which the second return port 12a provided on the partition wall (partition member) 12 is not blocked by a plastic bag or the like. Also in this embodiment, the convex portion 73 is formed on the cold air inflow side of the second return port 12a.
In the present embodiment, the convex portion 73 is formed so as to surround the periphery of each second return port 12a, but the object can be achieved even if there is a partial notch, for example.

The vertical height of the convex portion 73 is smaller than the distance from the upper end of the partition wall (partition member) 12 to the bottom surface of the storage tray 23.

1 Refrigerator body 2 Refrigerator room (upper refrigerating temperature zone room)
3 Vegetable room (lower refrigerated temperature zone room)
3a Return port (first return port)
12 Party wall (partition member)
12a Circulation discharge port (second return port)
40 Storage container 41 Lower container 42 Upper container 43 Lid plate (cover body)
44 Transpiration board (moisture storage / release member)
45a Rear cold air guide (cold air guide)
45b Side cold air guide (other cold guide)
60 Platinum catalyst 70 Cooling panel 71 Convex part 72 Rearmost part 73 Convex part 100A, 100B, 100C Refrigerator

Claims (3)

A discharge port that discharges cold air to the refrigerated temperature zone room,
The storage container stored in the refrigerated temperature zone room and
A return port provided at a position higher than the bottom surface of the refrigerating temperature zone chamber behind the storage container and returning the cold air discharged to the refrigerating temperature zone chamber to the cooler chamber provided on the back surface of the refrigerating temperature zone chamber. And in a refrigerator equipped with
A refrigerator characterized in that a convex portion is formed on the inflow side of the return port, and the convex portion is formed so that the front-rear tip of the convex portion is located in front of the rearmost end portion of the storage container. .. In the refrigerator according to claim 1,
A refrigerator characterized in that a plurality of the convex portions are formed and have a shape extending in the vertical direction . In the refrigerator according to claim 1 or 2.
A refrigerator characterized in that the distance between the lower end of the return port and the bottom surface of the refrigerating temperature zone chamber is smaller than the opening height of the return port .

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