JP6984280B2 - Showcase - Google Patents

Description

The present invention relates to a showcase, and more particularly to a showcase that holds a product placed on a product storage shelf in a desired temperature state.

Conventionally, the following showcases are known as showcases for holding a product placed on a product storage shelf in a desired temperature state.

For example, a plurality of product storage shelves are provided in the storage area of the case body so as to be lined up in the vertical direction, and products are placed and displayed on each product storage shelf. Further, a flow path of air sucked through a suction port provided in the lower front part of the storage area is formed in a place inside the case body and outside the storage area. An evaporator for cooling the passing air is installed in this air flow path, and the air cooled by the evaporator is blown out from an outlet provided in the front upper part of the storage area.

By the way, when an intermediate duct is attached to the lower part of an arbitrary product storage shelf in a manner of penetrating the back plate constituting the back surface of the storage area, the air flow path is blocked by the intermediate duct. As a result, in the showcase to which such an intermediate duct is attached, the air sucked into the air flow path through the suction port reaches the intermediate duct after being cooled by the evaporator, and is provided at the front end portion of the intermediate duct. It is blown out from the intermediate outlet to form an air curtain.

As a result, in such a showcase, when an intermediate duct is attached, the storage area is divided into upper and lower parts by the intermediate duct, and the upper area is set as the high temperature range and the lower area is set as the low temperature range with the intermediate duct as a boundary. As a result, the commodities can be kept at different temperatures (see, for example, Patent Document 1).

Japanese Patent No. 4636505

By the way, in the showcase proposed in Patent Document 1 described above, different temperature zones are formed with the intermediate duct as a boundary by attaching the intermediate duct, so that there is the following problem.

That is, the intermediate duct was attached below an arbitrary product storage shelf in a manner of penetrating the back plate, but a part of the air cooled by the evaporator due to a dimensional error or the like was arbitrarily attached to the intermediate duct. It was sometimes blown out into the gap between the product storage shelf. Since the upper region is the high temperature region and the lower region is the low temperature region with the intermediate duct as the boundary, dew condensation may occur on the upper surface of the intermediate duct due to the air being blown into the gap. ..

In view of the above circumstances, the present invention provides a showcase capable of suppressing the occurrence of dew condensation on the upper surface of the intermediate duct when the intermediate duct is mounted below the arbitrary product storage shelf. The purpose.

In order to achieve the above object, the showcase according to the present invention has a storage area in which a plurality of product storage shelves are provided in a plurality of stages in the vertical direction on the front side of a back plate extending vertically, and the storage area. It has an air flow path provided in a communicating manner, and adjusts the air circulation means for circulating air between the air flow path and the storage area and the air circulated by the air circulation means to a predetermined temperature. In a showcase provided with a temperature adjusting means for holding the product placed on the product storage shelf in a desired temperature state, the product is mounted below an arbitrary product storage shelf in a manner of penetrating the back plate. By doing so, a sheet metal that forms a closed space between the intermediate duct that blocks the air flow path and divides the storage area into upper and lower parts to have different temperatures, and the intermediate duct and the arbitrary product storage shelf. It is characterized by having a member.

Further, according to the present invention, in the showcase, a back opening is provided on the back plate so as to swing back and forth, and the back opening is formed below a predetermined height level of the back plate by swinging. A plurality of back flappers that partially open and close, and a shaft portion that extends in the left-right direction under an arbitrary product storage shelf are provided so as to be swingable around the axis, and pass through the air flow path. It is provided with an under-shelf duct that guides air blown out from a ventilation hole formed in the back flapper to the vicinity of the lower surface of the arbitrary product mounting shelf, and the sheet metal member is attached to the under-shelf duct. do.

According to the present invention, the sheet metal member is mounted under an arbitrary product storage shelf in a manner of penetrating the back plate, thereby blocking the air flow path and partitioning the storage area into upper and lower parts so as to have different temperatures. Since a closed space is formed between the intermediate duct and an arbitrary product storage shelf, a part of the air passing through the air flow path enters the gap between the intermediate duct and the product storage shelf due to a dimensional error or the like. It has the effect of suppressing the formation of dew on the upper surface of the intermediate duct.

FIG. 1 is a front view showing a showcase according to an embodiment of the present invention. FIG. 2 is a perspective view showing a showcase according to an embodiment of the present invention. FIG. 3 schematically shows the showcases shown in FIGS. 1 and 2, and is a cross-sectional view taken along the line AA in FIG. FIG. 4 schematically shows the showcases shown in FIGS. 1 and 2, and is a cross-sectional view taken along the line BB in FIG. FIG. 5 is a front view showing the back plate shown in FIGS. 1 to 4. FIG. 6 is an enlarged perspective view showing the back plate shown in FIGS. 1 to 4. FIG. 7 is a perspective view showing the back flapper shown in FIGS. 5 and 6. FIG. 8 is a plan view schematically showing the lead-out flow path shown in FIGS. 3 and 4. FIG. 9 is a perspective view schematically showing the lead-out flow path shown in FIGS. 3 and 4. FIG. 10 is a perspective view showing the under-shelf duct shown in FIG. FIG. 11 is a cross-sectional view showing the lower part of an arbitrary product storage shelf. FIG. 12 is a cross-sectional view showing the lower part of an arbitrary product storage shelf. FIG. 13 is a perspective view showing the sheet metal member shown in FIGS. 11 and 12. FIG. 14 is a perspective view showing the flow path switching means shown in FIG. FIG. 15 is a side view showing the flow path switching means shown in FIG. FIG. 16 is an enlarged cross-sectional view showing the vicinity of the compartment opening shown in FIGS. 3 and 4. FIG. 17 is a cross-sectional view showing a state in which an intermediate duct is inserted in the lower part of an arbitrary product storage shelf. FIG. 18 is an enlarged cross-sectional view showing the vicinity of the compartment opening shown in FIGS. 3 and 4.

Hereinafter, preferred embodiments of the showcase according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show a showcase according to an embodiment of the present invention, respectively, where FIG. 1 is a front view and FIG. 2 is a perspective view. 3 and 4 schematically show the showcases shown in FIGS. 1 and 2. FIG. 3 is a sectional view taken along line AA in FIG. 1, and FIG. 4 is a sectional view taken along line BB in FIG. Is. The showcase illustrated here is installed in a store such as a supermarket or a convenience store and houses a product to be sold, and includes a case main body 1.

The case body 1 includes a bottom surface portion 1A, a rear surface portion 1B, and a top surface portion 1C, and a storage area 2 having front and left and right side surfaces open in a portion surrounded by the bottom surface portion 1A, the rear surface portion 1B, and the top surface portion 1C is configured. In addition, an air circulation unit 20, an under-shelf duct 60, a flow path switching means 80, and an intermediate duct 90 are provided.

The back surface of the storage area 2 is composed of a back plate 3 which is the front surface of the rear surface portion 1B, and a plurality of stages (7 stages in the illustrated example) of product storage shelves 4 are provided. These product mounting shelves 4 are conventionally known, and are supported by a pair of left and right brackets 6 attached to shelf columns 5 erected on both left and right sides of the back plate 3, and these left and right pairs. A shelf board 8 is erected between the brackets 6 via a slider 7. The product loading shelf 4 is for placing and displaying products on the upper surface of the shelf board 8. The slider 7 slidably supports the shelf plate 8 with respect to the bracket 6 in the front-rear direction.

A suction port 9a is formed in the front lower portion of the storage area 2, that is, the front upper portion of the bottom surface portion 1A, and an outlet 9b is formed in the front upper portion of the storage area 2, that is, the front lower portion of the top surface portion 1C. Has been done.

The suction port 9a is an opening for sucking the air inside the storage area 2, and extends along the left-right direction of the storage area 2. The outlet 9b is an opening for blowing air into the storage area 2, and extends in the left-right direction of the storage area 2. For example, a rectifying member 9c having a honeycomb structure is attached to the outlet 9b.

As is clear from the figure, the back plate 3 is formed so as to be inclined upward gradually so as to be rearward. As shown in FIGS. 5 and 6, the back plate 3 is formed with a rectangular back opening 3a below a predetermined height level, that is, below the product loading shelf 4 at the fourth stage from the top. A plurality of back flappers 10 are provided so as to swing in the front-rear direction.

FIG. 7 is a perspective view showing the back flapper 10 shown in FIGS. 5 and 6. The back flapper 10 is formed by bending a steel plate, for example, and is a long member having a longitudinal direction in the left-right direction. Such a back flapper 10 has a flapper base portion 11, a flapper rear extension portion 12, and a flapper contact portion 13.

The flapper base portion 11 is a flat plate-shaped portion having a curled flapper shaft portion 11a at the upper end portion, and a plurality of ventilation holes 11b are formed along the left-right direction (longitudinal direction). The ventilation holes 11b are formed in such a manner that the central region thereof is sparse and the left and right end regions are dense with respect to the flapper base portion 11. The flapper rear extension portion 12 is a portion that extends rearward from the lower end portion of the flapper base portion 11 and then bends downward once, and then extends rearward. The flapper contact portion 13 is a portion extending upward from the rear end portion of the flapper rear extension portion 12.

In the back flapper 10, the left and right ends of the flapper shaft portion 11a are inserted into holes (not shown) formed in the left and right side edges of the back opening 3a of the back plate 3 and swing around the axis of the flapper shaft portion 11a. It is provided so as to swing in the front-rear direction by being pivotally supported. As shown in FIGS. 5 and 6, the back flappers 10 are installed so as to be arranged vertically in the back opening 3a, and normally close the back opening 3a. The back flapper 10 opens and closes a part of the back opening 3a by swinging.

As shown in FIGS. 3 and 4, the air circulation unit 20 includes an introduction flow path 21, a first air circulation means 30, a second air circulation means 40, and a take-out flow path 22.

The introduction flow path 21 is provided in the bottom surface portion 1A so as to extend along the front-rear direction. The introduction flow path 21 communicates with the suction port 9a.

The first air circulation means 30 includes a right air flow path (first air flow path) 30a and a right side circulation fan 30b.

The right air flow path 30a includes a first right back side flow path 31, a right upper side flow path 32, a second right back side flow path (first back flow path) 33, and a third right back side flow path. It is configured to include a side flow path (second back flow path) 34.

The first right back side flow path 31 is provided in the rear surface portion 1B so as to extend along the vertical direction. The first right rear side flow path 31 is provided with a right introduction port 31a which is an inlet of the right air flow path 30a at the lower portion thereof, and the right introduction port 31a faces the introduction flow path 21. There is. That is, the first right rear side flow path 31 communicates with the suction port 9a through the introduction flow path 21.

The right upper flow path 32 is provided on the top surface portion 1C and communicates with the first right rear side flow path 31. The second right rear flow path 33 extends along the vertical direction in the rear surface portion 1B and communicates with the right upper flow path 32. The second right back side flow path 33 extends on the front side of the first right back side flow path 31 and is partitioned from the first right back side flow path 31.

The third right back side flow path 34 extends along the vertical direction in the rear surface portion 1B. The third right back side flow path 34 extends between the second right back side flow path 33 and the back plate 3, and the lower ends of the third right back side flow path 33 and the second right back side flow path 33 are mutual to each other. It is partitioned by a partition plate 14 in a communicating state, and communicates with the storage area 2 through a ventilation hole 11b formed in the rear flapper 10. The third right rear side flow path 34 is provided with a right outlet 34a which is an outlet of the right air flow path 30a at the upper portion thereof, and the right outlet 34a faces the outlet flow path 22. There is.

The right circulation fan 30b is driven by a command given from a control means (not shown) to circulate air, and is arranged at a predetermined portion of the first right rear side flow path 31. In the present embodiment, the right circulation fan 30b is arranged at a predetermined portion of the first right back side flow path 31, but in the present invention, the arrangement position of the right circulation fan 30b is particularly limited. It does not matter, and may be arranged anywhere as long as it can exert the function of the right circulation fan 30b described later.

The second air circulation means 40 includes a left air flow path (second air flow path) 40a and a left circulation fan 40b.

The left air flow path 40a includes a left back side flow path 41. The left back side flow path 41 is partitioned from the first right back side flow path 31 on the left side of the first right back side flow path 31 in the rear surface portion 1B and extends along the vertical direction. It is provided in. The left back side flow path 41 is provided with a left introduction port 41a which is an inlet of the left air flow path 40a at the lower portion thereof, and the left introduction port 41a faces the introduction flow path 21. That is, the left back side flow path 41 communicates with the suction port 9a through the introduction flow path 21. The left rear flow path 41 is provided with an outlet for the left air flow path 40a at the upper portion thereof, and a left outlet 41b located on the left side of the right outlet 34a. The direction lead-out port 41b faces the lead-out flow path 22.

The left circulation fan 40b is driven by a command given from a control means (not shown) to circulate air, and is arranged at a predetermined portion of the left back side flow path 41. In the present embodiment, the left circulation fan 40b is arranged at a predetermined portion of the left back side flow path 41, but in the present invention, the arrangement position of the left circulation fan 40b is particularly limited. Instead, it may be arranged anywhere as long as it can exert the function of the left circulation fan 40b described later.

The lead-out flow path 22 is provided on the top surface portion 1C in a manner extending along the front-rear direction. The outlet flow path 22 communicates the right outlet 34a and the outlet 9b, and also communicates the left outlet 41b and the outlet 9b. That is, the lead-out flow path 22 is a common flow path for circulating the air that has passed through the right air flow path 30a and the air that has passed through the left air flow path 40a to the outlet 9b. As a result, the right air flow path 30a communicates with the storage area 2 through the suction port 9a and the air outlet 9b, and the left air flow path 40a communicates with the storage area 2 through the suction port 9a and the air outlet 9b. ing.

The first air circulation means 30 constituting such an air circulation unit 20 sucks the air inside the storage area 2 through the suction port 9a by driving the right circulation fan 30b, and the sucked air is introduced. After flowing through 21, air is sent out to the ventilation hole 11b via the right air flow path 30a, or air is sent out to the outlet 9b via the right air flow path 30a and the lead-out flow path 22. be. Air is circulated between the inside and the outside of the storage area 2 by blowing air into the inside of the storage area 2 through the ventilation hole 11b or the air outlet 9b.

Further, the second air circulation means 40 sucks the air inside the storage area 2 through the suction port 9a by driving the left circulation fan 40b, and after the sucked air flows through the introduction flow path 21, the left air. Air is circulated between the inside and the outside of the storage area 2 by sending air to the outlet 9b via the flow path 40a and the outlet flow path 22 and blowing air into the storage area 2 through the air outlet 9b. It is a thing.

An evaporator (temperature adjusting means) 35 is provided in the right upper flow path 32 of the right air flow path 30a. That is, the evaporator 35 is arranged above the storage area 2. The evaporator 35 constitutes a refrigerant circulation means for circulating the refrigerant together with a compressor, a condenser and an expansion mechanism (not shown). Here, the compressor compresses the refrigerant. The condenser condenses the refrigerant compressed by the compressor. The expansion mechanism adiabatically expands the refrigerant condensed by the condenser to bring it into a low temperature and low pressure state. The evaporator 35 is driven by the right circulation fan 30b to exchange heat between the air passing through the right upper flow path 32 from the rear to the front and the refrigerant adiabatically expanded by the expansion mechanism. Specifically, the air passing through the right upper flow path 32 is cooled by evaporating the refrigerant. The refrigerant vaporized by the evaporator 35 returns to the compressor and is compressed.

As shown in FIGS. 8 and 9, the above-mentioned lead-out flow path 22 is provided with a rectifying mechanism 50. The rectifying mechanism 50 includes a first baffle plate 51 and a second baffle plate 52.

The first baffle plate 51 is a long member made of, for example, a steel plate. The first baffle plate 51 is installed on the front side of the lead-out flow path 22, that is, in the vicinity of the air outlet 9b, in such a manner that the longitudinal direction is the left-right direction. The first baffle plate 51 is provided with a plurality of baffle holes 53. More specifically, in the first baffle plate 51, a plurality of baffle holes 53 are formed in such a manner that the central region is sparse and the left and right ends are dense. The air guide hole 53 is an elongated hole whose vertical direction is the longitudinal direction, and the respective dimensions are substantially the same.

The second baffle plate 52 is provided on the rear side of the first baffle plate 51, that is, on the upstream side of the first baffle plate 51, and has a pair of left and right right baffle plates 52a and a left baffle plate 52a. It has a plate 52b.

The right baffle plate 52a is installed on the rear side of the right end portion of the first baffle plate 51. More specifically, the right baffle plate 52a is installed so as to gradually incline forward toward the left, that is, to incline in a manner extending to the central region of the first baffle plate 51 toward the downstream side. ing. A plurality of passage holes 54 are formed in the right baffle plate 52a along the left-right direction.

The left baffle plate 52b is installed on the rear side of the left end portion of the first baffle plate 51. More specifically, the left baffle plate 52b is installed so as to gradually incline forward toward the right, that is, to incline in a manner extending to the central region of the first baffle plate 51 toward the downstream side. ing. A plurality of passage holes 54 are formed in the left baffle plate 52b along the left-right direction.

FIG. 10 is a perspective view showing the under-shelf duct 60 shown in FIG. As shown in FIG. 10, the under-shelf duct 60 is configured by bending a steel plate, for example, and is configured such that the duct base end portion 61 and the duct tip portion 62 are integrally formed.

The duct base portion is a flat plate-shaped portion having a curled duct shaft portion 61a at the front end portion. The duct tip portion 62 is a flat plate-shaped portion that gradually inclines backward as it goes downward from the rear end edge portion of the duct base end portion 61.

As shown in FIGS. 11 and 12, such an under-shelf duct 60 is provided at the lower part of the product loading shelf 4 at the lowermost stage from the product loading shelf 4 at the fourth stage from the top. That is, the under-shelf duct 60 is inserted into a hole (not shown) formed in the bracket 6 at both ends of the duct shaft portion 61a, so that the duct shaft portion 61a is moved back and forth between the brackets 6 around the axis of the duct shaft portion 61a. It is erected in a swinging manner.

In the under-shelf duct 60, under normal conditions, a part of the lower surface of the duct base end portion 61 abuts on the upper regulation piece 65 erected between the brackets 6, and a part of the front surface of the duct tip portion 62 is between the brackets 6. The forward swing is restricted by abutting on the lower restricting piece 66 erected in the upper restricting piece 66, whereby the rear end edge portion of the upper restricting piece 65 and the upper end edge portion of the lower restricting piece 66 are formed. The insertion opening 67 is closed.

The under-shelf duct 60 is for guiding the air blown out from the ventilation hole 11b of the rear flapper 10 to the vicinity of the lower surface of the shelf board 8 of the product mounting shelf 4 when the insertion opening 67 is closed. ..

A sheet metal member 70 is attached to the under-shelf duct 60 by, for example, welding. FIG. 13 is a perspective view showing the sheet metal member 70. As shown in FIG. 13, the sheet metal member 70 is formed by bending, for example, a steel plate, and has a structure in which a mounting portion 71, an extension portion 72, and a front extension portion 73 are integrally formed.

The mounting portion 71 is a flat plate-shaped portion mounted on the rear surface of the upper portion of the duct tip portion 62 for welding or the like. The upper extension portion 72 is a bent portion that extends forward in FIGS. 11 and 12 from the upper end edge portion of the mounting portion 71 and then gradually inclines and extends forward as it goes upward. A plurality of passage openings 72a are formed in the upper extension portion 72 along the left-right direction. The front extension portion 73 is a flat plate-like portion extending forward in FIGS. 11 and 12 from the upper end edge portion of the extension portion 72.

In such a sheet metal member 70, when the attached under-shelf duct 60 is in the normal state, the upper surface of the front extension portion 73 has a size close to the lower surface of the shelf plate 8 of the product mounting shelf 4, and the upper surface thereof. A mohair 74 is attached to the upper rear surface of the extension portion 72 over the entire length in the left-right direction, and a soft heat insulating material 75 is attached to the entire length in the left-right direction of the lower surface of the front extension portion 73.

The flow path switching means 80 is provided in the right air flow path 30a as shown in FIG. 3, and is configured to include a duct flapper 81 and a link mechanism 82 as shown in FIGS. 14 and 15. ing.

The duct flapper 81 is a long member whose left-right direction is the longitudinal direction. As shown in FIG. 16, the duct flapper 81 is provided so as to insert a partition opening 14a formed in the partition plate 14, and includes a base portion 81a, a first acting portion 81b, and a second acting portion 81c. Are integrally formed and configured. Here, the partition opening 14a is formed in the partition plate 14 on the upper side of the back opening 3a, and communicates the second right back side flow path 33 and the third right back side flow path 34. ..

The base portion 81a is a portion in which both left and right ends are pivotally supported in the front-rear direction by flapper support pieces 83 attached to both side surfaces of the third right rear side flow path 34. The first acting portion 81b is a portion extending in a manner that gradually inclines downward from the rear end edge portion of the base portion 81a in FIG. 16 toward the rear. The second acting portion 81c is a portion extending in FIG. 16 in a manner of gradually inclining upward from the front end edge portion of the base portion 81a toward the front.

The link mechanism 82 is a long member extending along the vertical direction in the central portion in the left-right direction of the third right back side flow path 34. The link mechanism 82 has a U-shape when viewed from above, and the movement in the left-right direction and the front-back direction is restricted by the regulation plate 84 inserted inside. That is, the link mechanism 82 is allowed to move along the vertical direction.

In the link mechanism 82, a plurality of engaging pieces 82a projecting forward are formed in the vertical direction. These engaging pieces 82a are provided as many as the number of back flappers 10, and each of them advances on the swing locus of the back flappers 10.

Further, in the link mechanism 82, the shaft-shaped portion 82b formed at the upper end portion is inserted into the elongated hole 85a of the locking piece 85 attached to the front surface of the second acting portion 81c of the duct flapper 81, and the duct flapper 81 is inserted. It is rotatably connected to the.

In the flow path switching means 80 having such a configuration, when the back opening 3a is closed without swinging any of the back flappers 10, the duct flapper 81 is as shown in FIG. 16 due to the weight of the link mechanism 82. , The posture is such that the partition opening 14a is opened. In such a posture, the first acting portion 81b closes the portion downstream of the partition opening 14a in the second right back side flow path 33, while the second acting portion 81c closes the third right back side flow path. The portion upstream of the partition opening 14a in 34 is closed.

The intermediate duct 90 is conventionally known and has a substantially flat plate shape as a whole. The intermediate duct 90 is detachably provided with respect to the showcase. Then, when mounted on a showcase, as shown in FIGS. 3 and 4, in a manner of penetrating a part of the back opening 3a opened by swinging one of the back flappers 10 rearward. It is attached to the back plate 3 and vertically partitions the storage area 2 and the third right back side flow path 34. A notch (not shown) for inserting the link mechanism 82 is formed in the rear end portion of the intermediate duct 90.

The intermediate duct 90 has a duct portion 91 extending in the front-rear direction, and has a rear end opening 91a and an intermediate air outlet 91b. The rear end opening 91a is formed on the lower surface of the rear end portion, and when attached to the back plate 3, faces the third right back side flow path 34. The intermediate outlet 91b is formed on the lower surface of the front end portion of the intermediate duct 90, and is an opening for blowing out the air that has passed through the duct portion 91.

When the intermediate duct 90 is mounted in this way, as shown in FIG. 17, the under-shelf duct 60 is pressed against the intermediate duct 90 inserted from the front, so that the axial center of the duct shaft portion 61a is formed. It swings backwards around to open the insertion opening 67, allowing the intermediate duct 90 to be inserted through the insertion opening 67. At this time, in the sheet metal member 70 attached to the under-shelf duct 60, the mohair 74 abuts on the shelf mohair 8a attached to the lower surface of the shelf plate 8 of the product mounting shelf 4, and the heat insulating material 75 is attached to the upper regulation piece 65. By abutting, a closed space S is formed between the intermediate duct 90 and the product storage shelf 4 immediately above the intermediate duct 90.

Further, when the intermediate duct 90 is attached, the back flapper 10 pressed against the intermediate duct 90 swings toward the rear. Then, as shown in FIG. 18, the back flapper 10 swinging rearward causes the flapper contact portion 13 to abut on the engagement piece 82a of the link mechanism 82 and press the engagement piece 82a. As a result, the link mechanism 82 moves upward, and the duct flapper 81 to which the link mechanism 82 is rotatably connected swings rearward, and the tip portion of the second acting portion 81c is partitioned. The partition opening 14a is closed by abutting on the front surface of the opening upper edge portion of the opening 14a. In this case, the first action unit 81b abuts on the partition plate 14 to open the second right back side flow path 33, and the second action part 81c opens the third right back side flow path 34. become.

In the showcase having the above configuration, when the intermediate duct 90 is not attached, the storage area 2 can be cooled to cool the products placed on the product storage shelves 4 as follows. can.

When the intermediate duct 90 is not attached, the back opening 3a is closed by each back flapper 10, and the partition opening 14a is opened. Further, the downstream side of the partition opening 14a in the second right back side flow path 33 is blocked by the first action portion 81b of the duct flapper 81, and the upstream side of the partition opening 14a in the third right back side flow path 34 is the duct flapper 81. It is blocked by the second acting portion 81c.

In such a state, when the right circulation fan 30b and the compressor are driven while the left circulation fan 40b is stopped, the air sucked through the suction port 9a passes through the introduction flow path 21 and then the right air. It reaches the flow path 30a. In the right air flow path 30a, air passes upward through the first right rear side flow path 31 and then enters the right upper flow path 32 and is cooled by the evaporator 35. The air cooled by the evaporator 35 reaches the second right back side flow path 33 from the right upper flow path 32, and is opened while passing downward through the second right back side flow path 33. It passes through the divided partition opening 14a to reach the third right back side flow path 34, and passes through the third right back side flow path 34 upward. The air that has passed through the third right rear side flow path 34 reaches the outlet flow path 22 through the right outlet port 34a, and is then blown out from the outlet 9b into the storage area 2 and into the suction port 9a in the storage area 2. An air curtain can be formed by flowing toward the product to cool the internal atmosphere of the storage area 2 and cool the product placed on the product storage shelf 4. That is, the product in the storage area 2 can be maintained in one temperature state.

By the way, since the rectifying mechanism 50 is provided in the lead-out flow path 22, the air sent out from the right-side lead-out port 34a arranged at a position biased to the right side is on the right side constituting the second baffle plate 52. A part of the baffle plate 52a passes through the passage hole 54, and most of it circulates toward the central region of the first baffle plate 51. In the first baffle plate 51, since the baffle holes 53 are formed so as to be sparse in the central region and dense at both left and right ends, the air passing toward the central region of the first baffle plate 51, Further, the air that has passed through the passage hole 54 passes through the air guide hole 53 so as to be substantially uniform on the left and right sides, and is blown out uniformly on the left and right sides from the outlet 9b.

Next, a case where the intermediate duct 90 is attached will be described. When the intermediate duct 90 is attached, the sheet metal member 70 attached to the under-shelf duct 60 swung by the intermediate duct 90 inserted into the insertion opening 67 has the mohair 74 directly above the intermediate duct 90. In addition to abutting on the shelf mohair 8a attached to the lower surface of the shelf board 8, the heat insulating material 75 abuts on the upper regulation piece 65, thereby creating a closed space S between the intermediate duct 90 and the product mounting shelf 4. Form.

Further, the link mechanism 82, which is pressed by the intermediate duct 90 and is in contact with the rear flapper 10 that swings backward, moves upward, so that the partition opening 14a is closed by the duct flapper 81 and the third right. The back side flow path 34 is blocked by the intermediate duct 90 and is partitioned vertically.

When the left circulation fan 40b, the right circulation fan 30b, and the compressor are driven in such a state, a part of the air sucked through the suction port 9a passes through the introduction flow path 21 and then partly to the right air flow path. It reaches 30a and the rest reaches the left air flow path 40a.

In the right air flow path 30a, air passes upward through the first right rear side flow path 31 and then enters the right upper flow path 32 and is cooled by the evaporator 35. The air cooled by the evaporator 35 reaches the second right back side flow path 33 from the right upper flow path 32, passes through the second right back side flow path 33 downward, and then is the third. It reaches the right back side flow path 34. A part of the air passing through the third right rear side flow path 34 is blown out from the ventilation hole 11b of the rear flapper 10 to the storage area 2, and is guided to the vicinity of the lower surface of the product loading shelf 4 by the under-shelf duct 60 and circulates. do. Further, the remaining air reaches the duct portion 91 from the rear end opening 91a of the intermediate duct 90, is blown out from the intermediate outlet 91b, and flows toward the suction port 9a in the storage area 2 to form an air curtain. It is possible to cool the internal atmosphere of the lower region of the intermediate duct 90 in the storage area 2 and cool the products placed on the product storage shelves 4 below the intermediate duct 90.

In the left air flow path 40a, after the air passes upward through the left back side flow path 41, it reaches the outlet flow path 22 through the left outlet 41b, and then reaches the storage area 2 from the outlet 9b. An air curtain can be formed by being blown out and flowing toward the suction port 9a in the storage area 2, so that the internal atmosphere in the upper region of the intermediate duct 90 in the storage area 2 can be set to a desired temperature. That is, the product in the storage area 2 can be held in two different temperature states.

By the way, since the rectifying mechanism 50 is provided in the lead-out flow path 22, the air sent out from the left lead-out port 41b arranged at a position biased to the left side is on the left side constituting the second baffle plate 52. A part of the baffle plate 52b passes through the passage hole 54, and most of it circulates toward the central region of the first baffle plate 51. In the first baffle plate 51, since the baffle holes 53 are formed so as to be sparse in the central region and dense at both left and right ends, the air passing toward the central region of the first baffle plate 51, Further, the air that has passed through the passage hole 54 passes through the air guide hole 53 so as to be substantially uniform on the left and right sides, and is blown out uniformly on the left and right sides from the outlet 9b.

As described above, according to the showcase according to the embodiment of the present invention, when the flow path switching means 80 is equipped with the intermediate duct 90, the back flapper 10 below the intermediate duct 90 The air cooled by the evaporator 35 is blown out from the ventilation hole 11b to the storage area 2, while the air cooled by the evaporator 35 is blown out from the ventilation hole 11b when the intermediate duct 90 is not attached. Since the air flow path is switched so as to be blown out from the outlet 9b while being regulated, the product in the storage area 2 can be well maintained not only in one temperature state but also in different temperature states.

According to the above showcase, when the intermediate duct 90 is attached, the air cooled by the evaporator 35 by the first air circulation means 30 is brought into the intermediate outlet 91b of the intermediate duct 90 and the lower back surface of the intermediate duct 90. The air circulated by the second air circulation means 40 is blown out from the outlet 9b while the product in the lower region of the intermediate duct 90 is blown out from the ventilation hole 11b of the flapper 10 to the storage area 2, and the intermediate duct 90 is blown out. Since the product in the upper region of the above can be held at a predetermined temperature, the product in the storage area 2 can be well held in different temperature states.

According to the above showcase, when the intermediate duct 90 is mounted, the sheet metal member 70 attached to the under-shelf duct 60 swung by the intermediate duct 90 is the intermediate duct 90 and the product placing shelf directly above the intermediate duct 90. Since a closed space S is formed between the air and the intermediate duct 90, a part of the air passing through the third right rear side flow path 34 enters the gap between the intermediate duct 90 and the product mounting shelf 4 due to a dimensional error or the like. It is possible to suppress the formation of dew on the upper surface of the intermediate duct 90.

According to the above showcase, since the evaporator 35 is provided on the top surface portion 1C, a sufficient volume of the storage area 2 can be secured, and a sufficient product display space can be secured.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these, and various modifications can be made.

In the above-described embodiment, as the flow path switching means 80, the duct flapper 81 that opens and closes the partition opening 14a and the third right rear side flow path 34 that is rotatably connected to the duct flapper 81 can be moved up and down. However, in the present invention, when the intermediate duct is mounted, the air adjusted by the temperature adjusting means from the ventilation hole of the rear flapper below the intermediate duct. Is blown out to the storage area, while if the intermediate duct is not installed, the air flow path is switched so that the air adjusted by the temperature adjusting means is blown out from the air outlet while restricting the air from being blown out from the ventilation holes. If possible, the components are not particularly limited.

In the above-described embodiment, the sheet metal member 70 is attached to the under-shelf duct 60, but in the present invention, the sheet metal member may be attached to other than the under-shelf duct.

1 Case body 2 Storage area 3 Back plate 3a Back opening 4 Product mounting shelf 9a Suction port 9b Air outlet 10 Back flapper 11b Vent hole 20 Air circulation unit 21 Introductory flow path 22 Outlet flow path 30 First air circulation means 30a Right Air flow path 30b Right circulation fan 35 Evaporator 40 Second air circulation means 40a Left air flow path 40b Left circulation fan 50 Rectification mechanism 51 First baffle plate 52 Second baffle plate 53 Baffle hole 54 Pass hole 60 Under-shelf duct 70 Sheet metal member 71 Mounting part 72 Upper extension part 73 Front extension 80 Flow path switching means 81 Duct flapper 82 Link mechanism 90 Intermediate duct S Sealed space

Claims (1)

A storage area with multiple product shelves along the vertical direction on the front side of the back plate that extends vertically,
An air circulation means that has an air flow path that communicates with the storage area and circulates air between the air flow path and the storage area.
In a showcase provided with a temperature adjusting means for adjusting the air circulated by the air circulating means to a predetermined temperature and holding the product placed on the product placing shelf in a desired temperature state.
An intermediate duct that divides the storage area into upper and lower parts and causes different temperatures while blocking the air flow path by being mounted below an arbitrary product storage shelf so as to penetrate the back plate.
A sheet metal member that forms a closed space between the intermediate duct and the arbitrary product storage shelf ,
A plurality of back flappers provided on the back plate so as to swing back and forth, and by swinging, a part of the back opening formed below a predetermined height level of the back plate is opened and closed. ,
It is provided so as to be swingable around the axis of the shaft portion extending in the left-right direction below the arbitrary product storage shelf, passes through the air flow path, and blows out from the ventilation hole formed in the back flapper. With an under-shelf duct that guides the created air to the vicinity of the lower surface of the arbitrary product mounting shelf.
Equipped with
The showcase characterized in that the sheet metal member is attached to the under-shelf duct.

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