JP2021060135A - Storage - Google Patents

Abstract

To provide a storage that can prevent a cover from being undulated due to thermal expansion to suppress occurrence of a gap between the cover and a top wall of a storage chamber, thereby enabling energy saving of the storage.SOLUTION: In front of a screwing position L of a bottom wall 20 of a synthetic resin cover 12 that partitions a heat exchange chamber 11, a deformation absorbing part 50 for absorbing the deformation of the cover 12 due to thermal expansion is provided. A front edge running in a left-right direction of the deformation absorbing part 50 is formed into an uneven shape such that convex parts 55 protruding toward the front and concave parts 56 recessed toward the rear are alternately formed. Consequently, since the front edge can be deformed in a direction in which the distance between the concave part 56 and the convex part 55 adjacent to each other becomes smaller, it is possible to prevent the occurrence of "undulation" in which the front edge is deformed in a vertical direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a storage chamber in which a heat exchange chamber is partitioned by a plastic cover fixed to the inner wall surface of the storage chamber, and a heat exchanger and a fan unit are arranged inside the heat exchange chamber.

In the field of storage such as refrigerators, it is efficient to suppress the leakage of cold air from the heat exchange chamber by preventing the formation of a gap between the cover that partitions the heat exchange chamber and the inner wall surface of the storage chamber. Realizing cold air circulation is known, for example, in Patent Document 1. In the cooling storage described in Patent Document 1, a heat exchange chamber is formed by fixing a cover to the top plate of the storage chamber with screws. The cover is provided with a flange portion along the top wall of the storage chamber, and a deformable member made of, for example, a cushioning material, various rubbers, a caulking material, etc. is arranged between the flange portion and the top plate of the storage chamber. It is installed. When the deformable member is arranged between the flange portion and the top plate of the storage chamber in this way, the gap between the flange portion and the top wall can be closed even if the flatness of the top plate is low. Therefore, the efficiency of cold air circulation can be improved and energy saving of the cooling storage can be realized.

Japanese Unexamined Patent Publication No. 2018-31504

In the configuration in which the deformable member is arranged between the flange portion of the cover and the top plate of the storage chamber as described above, when the cover is deformed beyond the thickness dimension of the deformable member, the top plate and the cover It is inevitable that a gap will be created between them. That is, in this type of storage, when the temperature inside the storage changes, the cover may swell due to thermal expansion and a large gap may be formed between the cover and the storage, but it can be deformed as in Patent Document 1. In the configuration in which the members are arranged, the waviness cannot be appropriately dealt with. In order to prevent the cover from waviness due to thermal expansion, for example, it is conceivable to attach a reinforcing plate to the cover to increase the rigidity of the cover. In that case, the cover is covered by the amount of the reinforcing plate attached. Invites an increase in cost.

The present invention provides a storage that can prevent the cover from waviness due to thermal expansion, suppress the formation of a gap between the cover and the top wall of the storage chamber, and save energy. With the goal.

The present invention includes a storage main body 4 composed of a heat insulating box body 3 having an opening on the front surface, a synthetic resin cover 12 attached to the lower surface of the top wall 10 of the storage main body 4 to partition the heat exchange chamber 11, and heat. The target is a storage facility including a heat exchanger 13 and a fan unit 14 arranged inside the switching chamber 11. The cover 12 includes a bottom wall 20 that divides the lower part of the heat exchange chamber 11 and inclines downward toward the rear, and a pair of left and right side walls 21 that are erected upward from the left and right edges of the bottom wall 20. 21 and a flange portion 37 which is connected to the upper end portions of both side walls 21 and is formed so as to project in the left-right direction are included. A through hole 41 for screwing is provided at the front end of each of the left and right flange portions 37 and 37, and when the front end edges of the left and right through holes 41 and 41 are connected to define the screw fixing position L, A deformation absorbing portion 50 for absorbing the deformation of the cover 12 due to thermal expansion is formed in front of the screwing position L of the bottom wall 20. Then, the front end edge of the deformation absorbing portion 50 running in the left-right direction is formed in a concavo-convex shape in which a convex portion 55 protruding forward and a concave portion 56 invading rearward are alternately continuous. It is a feature.

The deformation absorbing portion 50 includes a base wall 51 continuous with the front end edge of the bottom wall 20 and a front lateral wall 52 continuous with the base wall 51. The base wall 51 includes an upper curved portion 53 that bulges upward, and a front vertical wall 54 that continuously rises upward at the front end of the upper curved portion 53. The front end edge of the front horizontal wall 52 continuous with the front vertical wall 54 is formed in a concavo-convex shape in which a convex portion 55 protruding forward and a concave portion 56 invading rearward are alternately continuous.

The upper curved portion 53 is composed of a plurality of bulging portions 60 arranged in a row in the left-right direction. Each bulging portion 60 is formed in a triangular shape defined by three points, left and right ends 60A and 60B of sides extending in the left-right direction and vertices 60C located on the front side of the sides in a plan view. The position of the apex 60C of each bulging portion 60 and the position of the apex 55A of the convex portion 55 of the front end edge of the deformation absorbing portion 50 are configured to coincide with each other in the left-right direction.

In the storage 1 of the present invention, deformation absorption for absorbing deformation of the cover 12 due to thermal expansion ahead of the screwing position L of the bottom wall 20 of the synthetic resin cover 12 that partitions the heat exchange chamber 11. The part 50 was provided. Further, the front end edge of the deformation absorbing portion 50 running in the left-right direction is formed in a concavo-convex shape in which a convex portion 55 protruding forward and a concave portion 56 invading rearward are alternately continuous. According to this, even when warm air enters from the opening on the front surface of the storage body 4 and the front end portion of the cover 12 thermally expands, the distance dimension between the concave portion 56 and the convex portion 55 whose front end edges are adjacent to each other By deforming in the direction in which is smaller, it is possible to prevent the occurrence of "waviness" in which the front end edge is deformed in the vertical direction. From the above, according to the present invention, it is possible to prevent a "waviness" from occurring at the front end edge of the cover 12 and a gap between the front end edge of the cover 12 and the top wall 10 of the storage body 4. A decrease in cooling efficiency or a decrease in cold air circulation efficiency due to inadvertent entry of warm air into the heat exchange chamber 11 from the gap or leakage of cold air from the gap into the storage chamber 2 in the storage main body 4 It becomes possible to suppress the energy saving of the storage 1.

The deformation absorbing portion 50 includes a base wall 51 continuous with the front end edge of the bottom wall 20 and a front lateral wall 52 continuous with the base wall 51, and the base wall 51 is an upper curved portion 53 that bulges upward. And the front vertical wall 54 that continuously rises upward at the front end of the upper curved portion 53. According to this, the base wall 51 can be reinforced by the upper curved portion 53 and the front vertical wall 54 to prevent the base wall 51 from being thermally deformed, so that the front end edge is more reliably formed in an uneven shape. Only the front side wall 52 can be thermally deformed in a direction in which the distance between the adjacent concave portion 56 and the convex portion 55 becomes smaller. From the above, it is possible to more reliably prevent a gap from being formed between the front end edge of the cover 12 and the top wall 10 of the storage main body 4, and to save energy in the storage 1.

When the upper curved portion 53 is composed of a plurality of bulging portions 60 arranged in a row in the left-right direction, the base wall 51 is more slender than the form in which the upper curved portion 53 is composed of one bulging portion. It can be reinforced firmly. Further, each bulging portion 60 is formed in a triangular shape defined by three points, the left and right ends 60A and 60B of the side extending in the left-right direction and the apex 60C located on the front side of the side in a plan view. When the position of the apex 60C of each bulging portion 60 and the position of the apex 55A of the convex portion 55 of the front end edge of the deformation absorbing portion 50 are matched in the left-right direction, the front end position of each bulging portion 60 and the deformation Since the front end position of the absorption unit 50 can be brought into close contact with the position, only the front end edge of the deformation absorption unit 50 can be reliably thermally deformed.

It is a top view which looked at the front end part of the cover which constitutes the storage which concerns on this invention from the bottom. It is a schematic longitudinal side view of the storage which concerns on this invention. It is a plan view seen from the lower side of a cover, and is the sectional view taken along line BB of FIG. It is a vertical sectional side view of a heat exchange chamber. It is an external perspective view of a cover. It is a figure for demonstrating the mounting structure of a cover to a top wall. FIG. 1 is a cross-sectional view taken along the line AA of FIG. FIG. 6 is a cross-sectional view taken along the line CC of FIG.

(Example) Examples 1 to 8 show an example in which the storage according to the present invention is applied to a commercial refrigerator (hereinafter, simply referred to as “refrigerator”). The front-back, left-right, and up-down in this embodiment follow the notations of the crossing arrows shown in FIGS. 1, 2, and 5, and the front-back, left-right, and up-down in the vicinity of the arrows. As shown in FIG. 2, the refrigerator 1 according to the present embodiment has a main body case (storage main body) 4 composed of a heat insulating box 3 including a storage room 2 and heat insulating material that opens and closes a front opening formed on the front surface of the storage room 2. It is provided with a door 5. A machine room 6 is provided above the main body case 4, and a compressor 7, a condenser 8, a condenser fan 9 and the like constituting a cooling device are installed inside the machine room 6.

As shown in FIGS. 2 to 4, a cover 12 that also serves as a drain pan is attached to the lower surface of the top wall 10 of the main body case 4 to partition the heat exchange chamber 11. Inside the heat exchange chamber 11, one cooler (heat exchanger) 13 and a pair of left and right fan units 14 are arranged. The cooler 13 is suspended from the lower surface of the top wall 10. The fan unit 14 is mounted on a mounting seat formed between the front portion of the top wall 10 and the front portion of the cooler 13. A suction port 16 is formed in front of the cover 12 facing the fan unit 14, and an air outlet 18 is formed between the cover 12 and the rear wall 17 of the main body case 4 behind the cover 12.

When the fan unit 14 is driven while operating the compressor 7 and the condenser fan 9, the air in the storage chamber 2 is brought into the heat exchange chamber 11 from the suction port 16 by the fan unit 14 as shown by the arrow in FIG. The air is sucked and cooled by heat exchange while flowing through the cooler 13, to be cooled, and then blown out from the outlet 18 into the storage chamber 2. As a result, the air in the storage chamber 2 is circulated and the inside of the storage chamber 2 is cooled.

The cover 12 is a resin molded product having a bottom wall 20 covering the top wall 10 and a pair of side walls 21 and 21 arranged on the left and right sides of the bottom wall 20, and has a substantially quadrangular shallow dish shape having an opening at the top. Is formed in. The bottom wall 20 of the cover 12 faces the fan unit 14, the duct area 22 on the front side where the suction port 16 is opened, and the drain on the rear side, which is formed in a chevron shape recessed downward so as to face the cooler 13. It is composed of a region 23. A plurality of suction ports 16 are arranged in a matrix in the vertical and horizontal directions on the duct wall 24 constituting the duct region 22, and in this embodiment, eight suction ports (8 rows) in the left-right direction and 11 in the front-rear direction. A total of 88 suction ports 16 (11 rows) are provided. Each suction port 16 is composed of left and right horizontally long elliptical cylinders having openings at the upper and lower ends, and the height dimension of the cylinders of each suction port 16 constituting the five rows on the front side is the rear side. It is set to be larger than the height dimension of the cylinder of each suction port 16 constituting the six rows of. As shown in FIG. 4, the inclination angle of the duct wall 24 (24A) on the front side is set to be slightly larger than the inclination angle of the duct wall 24 (24B) on the rear side.

The drain region 23 is composed of a groove wall 26 having a U-shaped cross section having a drainage channel 25 formed at the lowermost portion and running in the front-rear direction, and a drain flow down wall 27 that slopes downward toward the drainage channel 25. The drain flow down wall 27 is a front sloping wall 27A that is continuous with the duct wall 24 and gently slopes toward the drainage channel 25, and is formed behind the front sloping wall 27A and gently slopes toward the drainage channel 25. It is composed of left and right inclined walls 27B and 27B. A back wall 27C is formed so as to rise at the rear edge of the left and right inclined walls 27B and 27B, and a drainage portion 28 continuous with the drainage channel 25 is projected rearward from the back wall 27C. There is. The drainage channel 25 and the drainage portion 28 are formed at positions slightly to the right of the center of the cover 12 in the left-right direction, and when the cover 12 is attached to the top wall 10, the drainage channel 25 and the drainage portion 28 are configured to incline downward toward the rear. Has been done.

As shown in FIG. 2, a drain flow path 30 composed of a drain pipe from the vicinity of the top wall 10 to the outside of the case is provided inside the rear wall 17 of the main body case 4 and on the lower surface of the bottom wall 29. A connection cylinder 31 for receiving the drainage portion 28 of the cover 12 is installed on the rear wall 17 of the main body case 4 facing the upper end of the drain flow path 30, and when the cover 12 is attached to the top wall 10, the drainage portion 28 is installed. Enters the connection cylinder 31, and the drainage portion 28 and the drain flow path 30 are connected to each other. The end of the drain flow path 30 reaches a drain port 32 that opens downward, and the drain water is discharged to the outside of the refrigerator through a drain hose or the like (not shown) connected to the drain port 32. From the above, the drain water such as the condensed water dripping from the cooler 13 and the defrost water generated during the defrosting operation is collected in the drainage channel 25 by the drain flow down wall 27 constituting the drain region 23 of the cover 12, and is collected in the drainage section 25. After being sent to the drain flow path 30 via the 28 and the connecting cylinder 31, the water is discharged from the drain port 32 to the outside of the refrigerator.

As shown in FIG. 6, the left and right side walls 21 constituting the cover 12 are formed in a substantially triangular shape that is long in the front-rear direction in a side view, and the rear end portion thereof is inclined downward toward the main body. The back end piece 35 that comes into contact with the inner surface of the rear wall of the case 4 is projected rearward. As shown in FIG. 3, the rear end edge of the back end piece 35 is located closer to the rear than the rear end edges of the left and right inclined walls 27B and 27B constituting the drain flow down wall 27, and the back end piece 35 is located. When the cover 12 is attached to the top wall 10 so as to abut against the rear wall 17 of the main body case 4, an opening serving as an air outlet 18 is formed between the back wall 27C and the rear wall 17 of the main body case 4. It has become like. In FIG. 5, reference numeral 36 indicates a recessed portion that serves as a reinforcing portion provided on the side wall 21. Each recess 36 is formed in a quadrangular shape in a lateral view, and its upper side portion enters inward of the side surface (see FIG. 8). Five recesses 36 are formed on each of the left and right side walls 21.

A horizontal portion extending straight in the front-rear direction and an inclined portion located at the upper end portion of the back end piece 35 are formed on the upper end edge of each side wall 21, and a cover 12 is attached to the upper end of the horizontal portion. A flange portion 37 for attaching to the top wall 10 of 4 is formed. The flange portion 37 is composed of a front and rear long flange wall 38 formed so as to project from the upper edge of the horizontal portion of the side wall in the left-right outer direction (horizontal outer direction). A recess 39 for reinforcement is recessed in the center of the board surface of each flange wall 38, and a through hole 41 for a screw 40 is provided at the front end of each flange wall 38. In FIGS. 5 and 8, reference numeral 42 indicates a rear flange formed overhanging on the upper edge of the inclined portion of the back end piece 35 for the purpose of reinforcing the back end piece 35.

As shown in FIG. 6, a holder 45 for supporting the flange portion 37 by inserting and mounting the rear end portion of the flange portion 37 from the front side on both left and right sides of the lower surface of the top wall 10 of the main body case 4. Is fixed. From the above, the cover 12 is mounted and fixed to the main body case 4 by inserting the rear end portion of the flange portion 37 into the holder 45 from the front side and then screwing the screw 40 into the top wall 10 through the through hole 41. be able to.

In the cover 12 according to the present embodiment, a deformation absorbing portion 50 for absorbing the deformation of the cover 12 due to thermal expansion is formed in front of the bottom wall 20. The deformation absorbing portion 50 includes a base wall 51 continuous with the front end edge of the bottom wall 20 and a front lateral wall 52 continuous with the base wall 51. As shown in FIG. 1, when the front end edges of the left and right through holes 41 and 41 formed at the front end of the flange portion 37 are connected to define the screw fixing position L, the region is deformed to a region ahead of the screw fixing position L. The absorption portion 50 is formed.

As shown in FIG. 7, the base wall 51 constituting the deformation absorbing portion 50 includes an upper curved portion 53 that bulges upward and a front vertical wall 54 that is continuous with the front end of the upper curved portion 53. The front horizontal wall 52 is continuously provided to the front vertical wall 54. As shown in FIGS. 1 and 5, the front end edge of the deformation absorbing portion 50 running in the left-right direction, that is, the front end edge of the front side wall 52, has a convex portion 55 projecting forward and a concave portion recessing rearward. The concave portions 56 and the convex portions 55 are formed in a concavo-convex shape that is alternately continuous, and here, the concave portion 56 and the convex portion 55 are formed in a continuous concavo-convex wavy shape with smooth curved lines.

As shown in FIGS. 1 and 7, the upper curved portion 53 is composed of a plurality of bulging portions 60 arranged in a row in the left-right direction. Each bulging portion 60 is formed in a triangular shape in a plan view. More specifically, each bulging portion 60 is formed in a triangular shape defined by three points, the left and right ends 60A and 60B of the side extending in the left-right direction and the apex 60C located on the front side of the side. The position of the apex 60C of each of the bulging portions 60 formed in a triangular shape and the position of the apex 55A of the convex portion 55 of the front end edge of the deformation absorbing portion 50 are configured to coincide with each other in the left-right direction.

As described above, in the refrigerator of the present embodiment, a deformation absorbing portion 50 for absorbing the deformation of the cover 12 due to thermal expansion is provided in front of the screw fixing position L of the bottom wall 20 of the cover 12. Further, the front end edge of the deformation absorbing portion 50 entering the left-right direction is formed in a concavo-convex shape in which a convex portion 55 protruding forward and a concave portion 56 invading rearward are alternately continuous. Even when warm air enters from the opening on the front surface of the cover 12 and the front end edge of the cover 12 thermally expands, the front end edge is deformed in a direction in which the distance between the adjacent concave portion 56 and the convex portion 55 becomes smaller. That is, by deforming in the left-right direction, it is possible to prevent the occurrence of "waviness" in which the front end edge is deformed in the up-down direction. As a result, it is possible to prevent a "waviness" from occurring at the front end edge of the cover 12 and a gap between the front end edge of the cover 12 and the top wall 10 of the main body case 4, so that heat exchange from the gap can be prevented. Energy saving of the refrigerator 1 is achieved by suppressing a decrease in cooling efficiency and a decrease in cold air circulation efficiency due to inadvertent entry of warm air into the chamber 11 or leakage of cold air into the storage chamber 2 from the gap. be able to.

The deformation absorbing portion 50 includes a base wall 51 continuous with the front end edge of the bottom wall 20 and a front lateral wall 52 continuous with the base wall 51, and the base wall 51 is combined with an upper curved portion 53 that bulges upward. Since the front vertical wall 54 that continuously stands up upward at the front end of the upper curved portion 53 is included, the base wall 51 is reinforced by the upper curved portion 53 and the front vertical wall 54 to reinforce the base. It is possible to prevent the wall 51 from being thermally deformed, and only the front side wall 52 whose front end edge is formed in an uneven shape can be more surely formed in a direction in which the distance between the adjacent concave portion 56 and the convex portion 55 becomes smaller. It can be thermally deformed in the left-right direction). As a result, it is possible to more reliably prevent a gap from being formed between the front end edge of the cover 12 and the top wall 10 of the main body case 4, and to save energy in the refrigerator 1.

Since the upper curved portion 53 is composed of a plurality of bulging portions 60 arranged in a row in the left-right direction, the base wall 51 is more slender than the form in which the upper curved portion 53 is composed of one bulging portion. It can be reinforced firmly. Further, each bulging portion 60 is formed in a triangular shape defined by three points, the left and right ends 60A and 60B of the side extending in the left-right direction and the apex 60C located on the front side of the side in a plan view. Since the position of the apex 60C of each bulging portion 60 and the position of the apex 55A of the convex portion 55 of the front end edge of the deformation absorbing portion 50 are matched in the left-right direction, the position of the front end of each bulging portion 60 and the deformation absorbing portion 60 are matched. It is possible to confront the front end position of the portion 50 in close proximity, and only the front end edge of the deformation absorbing portion 50 can be reliably thermally deformed.

In the above embodiment, an example in which the storage of the present invention is applied to a commercial refrigerator is shown, but the present invention is not limited to this, and can be applied to showcases and the like.

1 Storage (refrigerator)
3 Insulated box body 4 Storage body (main body case)
11 Heat exchanger 12 Cover 13 Heat exchanger (cooler)
14 Fan unit 20 Bottom wall 21 Side wall 37 Flange part 41 Through hole for screwing 50 Deformation absorption part 51 Base wall 52 Front side wall 53 Upper curved part 54 Front vertical wall 55 Convex part 55A Convex part apex 56 Concave part 60 Protruding part 60A Left and right ends of the bulge 60B Left and right ends of the bulge 60C Top of the bulge L Screw fixing position

Claims (3)

A storage body (4) composed of a heat insulating box (3) having an opening on the front surface, and
A synthetic resin cover (12) attached to the lower surface of the top wall (10) of the storage body (4) to partition the heat exchange chamber (11), and
The heat exchanger (13) and fan unit (14) arranged inside the heat exchange chamber (11),
In the storage equipped with
The cover (12) is erected upward from the left and right edges of the bottom wall (20) and the bottom wall (20) that divides the lower part of the heat exchange chamber (11) and inclines downward toward the rear. Includes a pair of left and right side walls (21.21) and a flange portion (37) that is connected to the upper ends of both side walls (21) and is formed so as to project in the left-right direction.
At the front ends of the left and right flanges (37 and 37), through holes (41) for screwing are provided.
When the screw fixing position (L) is defined by connecting the front end edges of the left and right through holes (41.41), the cover derived from thermal expansion is in front of the screw fixing position (L) of the bottom wall (20). A deformation absorbing portion (50) for absorbing the deformation of (12) is formed.
The front end edge of the deformation absorbing portion (50) running in the left-right direction is formed in a concavo-convex shape in which a convex portion (55) protruding forward and a concave portion (56) recessing rearward are alternately continuous. A storage that is characterized by being. The deformation absorbing portion (50) includes a base wall (51) continuous with the front end edge of the bottom wall (20) and a front lateral wall (52) continuous with the base wall (51).
The base wall (51) includes an upper curved portion (53) that bulges upward and a front vertical wall (54) that continuously rises upward at the front end of the upper curved portion (53).
The front edge of the front horizontal wall (52) that is continuous with the front vertical wall (54) is a concavo-convex structure in which a convex portion (55) protruding forward and a concave portion (56) recessing rearward are alternately continuous. The storage according to claim 1, which is formed in a shape. The upper curved portion (53) is composed of a plurality of bulging portions (60) arranged in a row in the left-right direction.
Each bulging portion (60) has a triangular shape defined by three points, that is, the left and right ends (60A and 60B) of the sides extending in the left-right direction and the apex (60C) located in front of the sides in a plan view. Is formed in
The position of the apex (60C) of each bulging portion (60) and the position of the apex (55A) of the convex portion (55) of the front end edge of the deformation absorbing portion (50) are configured to coincide in the left-right direction. The storage according to claim 2.

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