JP6933075B2 - Showcase - Google Patents

Description

The present invention relates to a showcase, and more particularly to a showcase that holds a product to be stored in a desired temperature state.

Conventionally, Patent Document 1 has proposed a showcase for holding a product to be stored in a desired temperature state. In the showcase proposed in Patent Document 1, a plurality of product storage shelves are provided in a plurality of stages along the vertical direction in the storage area of the case body having an opening formed on the front surface, and each product is mounted. Products are displayed on the shelves.

Further, in a place inside the case body that is outside the storage area, a flow path of air sucked through a suction port provided in the lower front part of the storage area is formed, and an air flow on the upper side of the storage area. The road is equipped with an evaporator.

The air passing through such an air flow path is cooled by an evaporator and then blown out from an air outlet provided in the front upper part of the storage area. By circulating the air blown out from the air outlet through the flow path of the air sucked into the suction port, the internal air in the storage area is cooled and the product placed on the product storage shelf is adjusted to the desired temperature. Is retained.

In such a showcase, since the evaporator is provided on the upper side of the storage area, the volume of the storage area is sufficient as compared with the case where the evaporator is provided on the back side or the lower side of the storage area. It has the advantage that it can be made larger and a sufficient space for displaying products can be secured.

Japanese Patent No. 3695885

By the way, in the showcase proposed in Patent Document 1 described above, a suction port is provided in the front lower part of the storage area, an air outlet is provided in the front upper part of the storage area, and an evaporator is provided in the storage area. Since it is provided on the upper side, the air is sucked from the suction port and passes through the air flow path on the back side of the storage area toward the evaporator. That is, only the air before being cooled by the evaporator passes through the air flow path on the back side of the storage area.

Therefore, even if the storage area is divided into upper and lower parts by a partition member such as an intermediate duct and the air flow path on the back side of the storage area is also divided into upper and lower parts by the partition member, the air that has passed through the evaporator on only one side. As a result, it was difficult to keep the products in the storage area at different temperature states.

In view of the above circumstances, it is an object of the present invention to provide a showcase capable of satisfactorily holding a product in a storage area not only in one temperature state but also in different temperature states.

In order to achieve the above object, the showcase according to the present invention is formed in the case main body, and is inside the case main body in such a manner that the storage area for storing the product and the storage area communicate with each other through the suction port and the air outlet. An air circulation means having an provided air flow path and circulating air between the air flow path and the storage area, and a temperature adjusting means for adjusting the air circulated by the air circulation means to a predetermined temperature. In a showcase for holding the product in a desired temperature state, the back plate is provided on the back plate constituting the back surface of the storage area so as to swing back and forth, and by swinging, the back plate is provided. A plurality of back flappers that open and close a part of the back opening formed below a predetermined height level of the above, and one of the back flappers is swung rearward to penetrate a part of the back opening. In this case, the temperature adjusting means is used to form an intermediate duct that divides the storage area up and down, and if the intermediate duct is installed, a ventilation hole formed in the rear flapper below the intermediate duct. While the adjusted air is blown out to the storage area, when the intermediate duct is not installed, the air adjusted by the temperature adjusting means is restricted from being blown out from the ventilation hole from the outlet. It is characterized by being provided with a flow path switching means for switching the air flow path so as to be blown out.

Further, in the present invention, in the showcase, the air flow path includes a first back flow path for passing air adjusted by the temperature adjusting means downward on the back side of the storage area, and the back plate. The first back flow path is partitioned by a partition plate so that the lower ends of the first back flow path communicate with each other, and air passes upward toward the air outlet. The intermediate duct is provided with a second back flow path to be mounted, and when the intermediate duct is mounted in such a manner that one of the back flappers is swung rearward to penetrate a part of the back opening, the second back flow path is moved up and down. It is characterized by partitioning into.

Further, in the present invention, in the showcase, when the intermediate duct is mounted, the flow path switching means closes the partition opening formed above the back opening in the partition plate. The partition opening is opened when the air passing through the first back flow path downward passes through the second back flow path upward through the lower end portion, while the intermediate duct is not attached. The air passing through the first back flow path flows into the second back flow path through the compartment opening and passes through the second back flow path upward.

Further, according to the present invention, in the showcase, the flow path switching means has a first posture in which the section opening is opened and a downstream portion of the section opening in the first back flow path is closed, and the section opening. The duct flapper is provided so as to be swingable between the second posture that opens the downstream portion while closing the door, and the intermediate duct is mounted while maintaining the duct flapper in the first posture in the normal state. It is characterized in that it is provided with a link mechanism that causes the duct flapper to be in the second posture by being pressed by the back flapper that swings backward in the case of

According to the present invention, when the flow path switching means is equipped with an intermediate duct, the air adjusted by the temperature adjusting means from the ventilation hole formed in the back flapper below the intermediate duct is placed in the storage area. On the other hand, when 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 being restricted from being blown out from the ventilation hole, so the storage area This product has the effect of being able to satisfactorily hold the product not only in one temperature state but also in different temperature states.

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 cross-sectional view taken along the line AA in FIG. 1, and FIG. 4 is a cross-sectional view taken along the 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 formed by 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 a pair of left and right brackets. A shelf board 8 is erected between the brackets 6 via a slider 7. The product storage shelf 4 is for 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 part of the storage area 2, that is, the front upper part of the bottom surface portion 1A, and an outlet 9b is formed in the front upper part of the storage area 2, that is, the front lower part 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 air 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 honeycomb-structured rectifying member 9c 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.

The back flapper 10 swings around the axis of the flapper shaft portion 11a by inserting the left and right ends of the flapper shaft portion 11a into holes (not shown) formed in the left and right side edges of the back opening 3a of the back plate 3. 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 on the bottom surface portion 1A in a manner extending 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 part 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 mutually connected. 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 back flapper 10. The third right back 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 part thereof, and the right outlet 34a faces the lead 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 may be arranged anywhere as long as it can exhibit the function of the right circulation fan 30b, which will be 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 that allows 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 flow 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 through the introduction flow path. 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 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 out to the air outlet 9b via the flow path 40a and the lead-out 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 in 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 a manner in which 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 is provided with 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 rearward 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 below the product loading shelf 4 at the fourth stage from the top to the product loading shelf 4 at the bottom. That is, the under-shelf duct 60 is inserted into holes (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 normal state of the under-shelf duct 60, 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 was restricted by abutting on the lower restricting piece 66 erected on 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 were 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 back flapper 10 to the vicinity of the lower surface of the shelf board 8 of the product loading 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 attachment portion 71 is a flat plate-like portion attached to 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 forward as it goes upward. A plurality of passage openings 72a are formed in the 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 of the lower surface of the front extension portion 73 in the left-right direction.

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. The second acting portion 81c is a portion extending in the manner of gradually inclining upward as it goes forward from the front end edge portion of the base portion 81a in FIG.

The link mechanism 82 is a long member extending along the vertical direction in the central portion of the third right rear side flow path 34 in the left-right direction. The link mechanism 82 has a U-shape when viewed from above, and movement in the left-right direction and the front-rear direction is restricted by a regulation plate 84 inserted inside. That is, the link mechanism 82 is allowed to move in 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 the rear flappers 10, and each of them advances on the swing locus of the rear 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.

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 action portion 81b closes the portion downstream of the partition opening 14a in the second right back side flow path 33, while the second action part 81c closes the third right back side flow path. The portion on the upstream side 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 at the rear end 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 rear side flow path 34. The intermediate air 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 to form the axis of the duct shaft portion 61a. 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 comes into contact with 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 brought into 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 rear flapper 10 pressed against the intermediate duct 90 swings rearward. Then, as shown in FIG. 18, the rear 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 to partition the tip of the second acting portion 81c. The partition opening 14a is closed by contacting 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 installed, 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 action unit 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 section 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 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 products 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-hand 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 the baffle plate 52a flows 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 air 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. A closed space S is provided between the intermediate duct 90 and the product mounting shelf 4 by abutting the shelf mohair 8a attached to the lower surface of the shelf board 8 and the heat insulating material 75 abutting on the upper regulation piece 65. Form.

Further, the link mechanism 82 that is pressed by the intermediate duct 90 and is in contact with the rear flapper 10 that swings rearward 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 partially passes through the right air flow path. As it reaches 30a, 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. The internal atmosphere of the region below the intermediate duct 90 in the storage area 2 can be cooled, and the products placed on the product storage shelves 4 below the intermediate duct 90 can be cooled.

In the left air flow path 40a, after the air passes upward through the left rear side flow path 41, it reaches the lead-out 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 of the upper region of the intermediate duct 90 in the storage area 2 can be set to a desired temperature. That is, the products 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 air 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 backside 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 that the air is blown out from the air 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 introduced to 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 to cool the product in the lower region of the intermediate duct 90 by blowing 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 immediately above the intermediate duct 90. Since a closed space S is formed between the air and the product, 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 display space for products can be secured.

Although 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 are 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, but when 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 Introduction flow path 22 Derivation 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 rectifying mechanism 51 First air duct 52 Second air duct 53 Air duct 54 Pass hole 60 Under-shelf duct 70 Sheet metal member 71 Mounting part 72 Upper extension part 73 Forward extension part 80 Flow path switching means 81 Duct flapper 82 Link mechanism 90 Intermediate duct S Sealed space

Claims (4)

A storage area formed on the case body to store products,
An air circulation means that has an air flow path provided inside the case body in a manner that communicates with the storage area through a suction port and an air outlet, 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 in a desired temperature state.
A part of the back opening formed below a predetermined height level of the back plate by being provided on the back plate constituting the back surface of the storage area so as to swing back and forth, respectively. With multiple back flappers that open and close,
An intermediate duct that divides the storage area up and down when one of the rear flappers is mounted so as to swing rearward to penetrate a part of the rear opening.
When the intermediate duct is mounted, the air adjusted by the temperature adjusting means is blown out to the storage area from the ventilation holes formed in the rear flapper below the intermediate duct, while the intermediate duct is installed. Is provided with a flow path switching means for switching the air flow path 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 air vent. A showcase featuring that. The air flow path is
A first back flow path that allows air adjusted by the temperature adjusting means to pass downward on the back side of the storage area, and
Between the back plate and the first back flow path, the first back flow path is partitioned by a partition plate with the lower ends communicating with each other, and air is provided toward the air outlet. It is equipped with a second back flow path that allows the air to pass upward.
The intermediate duct is characterized in that the second back flow path is partitioned up and down when one of the back flappers is swung rearward to penetrate a part of the back opening. The showcase described in 1. When the intermediate duct is mounted, the flow path switching means closes the partition opening formed above the back opening in the partition plate and directs the first back flow path downward. The passing air passes through the second back flow path upward through the lower end portion, while the partition opening is opened and passes through the first back flow path when the intermediate duct is not attached. The showcase according to claim 2, wherein the air to be used flows into the second back flow path through the partition opening and passes through the second back flow path upward. The flow path switching means
A first posture in which the downstream portion of the compartment opening in the first back flow path is closed while opening the compartment opening, and a second posture in which the downstream portion is opened while closing the compartment opening. With a duct flapper that can be swung between
A link mechanism that keeps the duct flapper in the first posture in the normal state, and causes the duct flapper to be in the second posture by being pressed by the rear flapper that swings backward when the intermediate duct is mounted. The showcase according to claim 3, wherein the showcase is provided.

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