JP2007187391A - Showcase for cold storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a showcase for cold storage, cold-insulating a display shelf of an upper stage in a weak cold temperature range for a packed lunch, a rice ball or the like, and cold-insulating a display shelf of a lower stage in a refrigeration temperature range for a related commodity such as salad pack by one showcase. <P>SOLUTION: In this showcase, an intermediate shelf duct 15 is inserted and installed in one of the display shelves 5 in addition to a conventional two-layer air curtain (a first air course A and a second air course B) of cold air and non-cold air, a cold air partition dumper 22 is opened, and a third air course C leading cooling air from a rear part of the middle of the first air course A, and forming an air curtain of blowing cooling from a discharge port of a front part is provided. The non-cooling air of the second air course B is used in the weak cold temperature range, and the cooling air of the third air course C is used in the refrigeration temperature range. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a refrigerated showcase, and more particularly, to a refrigerated showcase that uses a storage room of a showcase main body for refrigeration, and that can be used simultaneously for refrigeration with the upper side for weak cooling and the lower side for refrigeration. .

  Up to now, in order to display lunch boxes, rice balls, salad packs and other side dishes at supermarkets and convenience stores, etc., the difference in the temperature range of the cold storage (the bento boxes and rice balls are about 18 ° C, the salad packs are refrigerated) From the temperature range of about 5 ° C.), they were sold separately in separate front open type refrigerated showcases.

On the other hand, in recent years, a refrigerated showcase has been used as a single showcase that covers two different temperature zones.
This showcase is designed so that the upper side of the display shelf can be used as a warm storage display, and the lower side can be used as a refrigeration display. It can be used in food stores such as supermarkets and convenience stores. It is used to simultaneously display and sell PET bottle drinks and can drinks in a heated state and a refrigerated state.

Such a showcase for refrigeration / warm storage usually has an air passage that circulates cold air in sequence through the front, bottom, back, ceiling, and front of the showcase to form a cooling air curtain in front. In addition, another air passage is provided. In other words, the air passage is blocked in the middle of the back surface, passes through the back panel, passes through the under-shelf duct of the display shelf, and forms an air curtain for cooling in front of the display shelf. A heater is provided on the upper surface side of the shelf so that the lower side of the display shelf corresponding to the air passage can be used as a refrigeration display and the upper side of the display shelf can be used as a storage display (for example, Patent Document 1). reference).
JP 2004-12021 A

  By the way, if related products such as bento boxes, rice balls and salad packs are in separate showcases, the sales promotion effect is low and the installation space is limited in convenience stores with small store space. There was a problem that it was restricted.

  The present invention has been devised in view of the above problems. In one showcase, the upper display shelf is in a low-cooling temperature zone (for example, around 18 ° C.) such as a lunch box or a rice ball, and the lower display shelf is It is an object of the present invention to provide a refrigerated showcase that keeps a refrigerated temperature zone (for example, around 5 ° C.) of a related product such as a salad pack.

In order to achieve the above object, in the present invention, in a refrigerated showcase provided with a display shelf for goods in a warehouse, cold air is circulated sequentially through the front, bottom, back, ceiling and front of the showcase. A first air passage that forms a cooling air curtain forward, and a second air passage that forms an uncooled air curtain that circulates outside the first air passage to protect the cooling air curtain; A cooling air is ventilated from the back part in the middle of the first air path to the front part through an intermediate shelf duct with a wind tunnel, and a third air path is formed in front of the intermediate shelf to form a cooling air curtain. When the third air passage is formed and the first air passage is shut off, the lower part of the intermediate shelf is in the refrigeration temperature zone by the cooling air of the third air passage, and the upper part of the intermediate shelf is the weak cooling by the uncooled air of the second air passage. It is characterized by partitioning into temperature zones.

The intermediate shelf duct is guided by a rail having a U-shaped cross section of the shelf support bracket and is detachably inserted so that it can be set and switched to a desired shelf support within the moving range. It is stored in a lower display shelf.
Further, when the intermediate shelf duct is inserted, the stopper is provided with a magnet so that the rear end thereof opens the cold air partition damper that partitions the rear portion so that the rear portion can be opened and closed, and comes into close contact with the inner wall of the rear duct. It is characterized by.
Further, the cold air partition damper provided on the back surface portion is provided with a spring that is normally biased in the closing direction.
In addition, a heat insulating material is attached to the upper part of the intermediate shelf duct.
And when the said intermediate shelf duct is inserted, temperature control of the upper part in a store | warehouse | chamber is ON / OFF control of the fan for 2nd air paths.

According to the refrigeration showcase of the present invention, when the third air passage is formed by inserting the intermediate shelf duct, the upper side of the display shelf of the intermediate shelf duct is set to the low temperature range, and the lower side is set to the refrigerated temperature range. Can be partitioned. In this case, the cold air that has been cooled through the third air passage is also partly taken into the second air passage through the suction port in the lower front portion of the case and circulated. Even if it exists, it will be in the state cooled from atmospheric temperature, and it becomes suitable for the cold preservation and quality control of a lunch box or a rice ball. And depending on the circulation of the wind, there is a concern that the weakly cold temperature range is too cold, but in that case, by controlling the ON / OFF of the second air path fan, Too cold can be prevented. Thereby, the slightly cold temperature zone in the upper part of the interior can be maintained at a constant temperature suitable for lunch boxes and rice balls that are lower than the store atmosphere temperature.
In addition, the intermediate shelf duct is guided by a rail having a U-shaped cross section of the shelf receiving bracket and easily fits therein, so that it has a smoother and more stable feeling than conventional suspension methods.
Further, when the intermediate shelf duct is not used, it can be stored in the lowermost large display shelf, so that it does not take up space and the intermediate shelf duct can be prevented from being lost, which is convenient for all-stage refrigeration.

The best mode of the present invention will be described below in detail with reference to the drawings.
1 is a cross-sectional side view of the refrigerated showcase of the present invention, FIG. 2 is also a front view, FIG. 3 is a cross-sectional side view of an intermediate shelf duct, FIG. 4 is a front view of a display shelf, and FIG. 6 is a cross-sectional explanatory view of the cold air partition damper, and FIG. 7 is a cross-sectional explanatory view in a state where the intermediate shelf duct is inserted and the cold air partition damper is opened.

  As shown in FIG. 1, the refrigerated showcase 1 of the present invention is formed by filling a main body 2 having a substantially U-shaped cross section with a front opening filled with a heat insulating material. A storage chamber 4 is defined by the inner panel 3 inside the opening, and a display shelf 5 is hooked up and down in a plurality of stages.

  In the showcase 1, cold air is circulated in sequence with the front part 2a, bottom part (bottom duct) 2b, back part (back duct) 2c, ceiling part (ceiling duct) 2d, and front part 2a of the showcase 1, A first air passage A is provided that forms a cooling air curtain (air curtain temperature 0 to 5 ° C.) from the cold air outlet 6 toward the suction port 7 on the lower front surface. A circulation fan 8 is disposed in the bottom duct 2b of the first air passage A, and a cooler 9 is disposed between the bottom duct 2b and the back duct 2c.

Further, in the showcase 1, uncooled air circulation ducts (a bottom duct 2e, a rear duct 2f, a ceiling duct 2g) for forming a double air curtain outside the first air passage A are provided. And a second air passage B that forms an uncooled air curtain (air curtain temperature of 10 to 15 ° C.) from the non-cool air outlet 10 toward the suction port 11 is provided. A circulation fan 12 is disposed in the bottom duct 2e of the second air passage B.
In addition, when the 1st wind path A and the 2nd wind path B are working together, it is the state by which the whole storage chamber 4 is kept cold for refrigeration.

In the showcase 1 of the present embodiment, when the intermediate shelf duct 15 is inserted into the shelf holder 14 of the desired display shelf 5 (here, the third level from the top), the rear duct in the middle of the first air path A From 2c, the cooling air is ventilated through the intermediate shelf duct 15 to the front surface portion 2a, and a cooling air curtain (air curtain temperature 0 to 5 ° C.) is formed in front of the lower side of the third shelf 5 from the top. A third air path C is formed.
When the third air passage C is formed and the first air passage A is blocked, the lower side of the display shelf 5 in the third stage from the top can be maintained in the refrigeration temperature zone by the cooling air of the third air passage C. The upper side of the display shelf 5 in the third stage from the top can be held in the weak cooling temperature zone (around 18 ° C.) of the second air passage B by the uncooled air.

The intermediate shelf duct 15 forming the third air passage C has a flat, hollow box shape with a rear end protruding, and as shown in detail in FIG. 3, the suction port 16 at the rear end and the wind tunnel 17 at the middle. The front end has a discharge port 18 and the rear side has a stopper 19. Further, a cushion material 16 a is attached to the protruding rear end (formation end portion of the suction port 16), and a magnet 23 is attached to the end portion of the stopper 19.
On the other hand, in the desired area (intermediate shelf movement range) of the back surface, as shown in FIGS. 6 and 7, a plurality of windows that are long in the width direction communicating with the back surface duct 2c are formed on the back surface in the warehouse, Moreover, the cold air partition dampers 22 and the fixing members 29 that close the windows are alternately provided, and the windows are closed by the cool air partition dampers 22 that can be opened and closed. The partition damper 22 is formed so as to be pivotable about the upper side, and is normally elastically locked in a closing direction by a spring 24 to close a window formed on the back wall of the inner panel 3.

As shown in detail in FIGS. 4 and 5, the intermediate shelf duct 15 for forming the third air passage C is guided by the rails 21 and 21 having a U-shaped cross section provided on the shelf support bracket 20 and is attached and detached. Inserted as possible.
At the time of this insertion, the intermediate shelf duct 15 pushes and opens the cold air partition damper 22 whose rear end projecting portion partitions the back wall so that it can be opened and closed against the urging force of the spring 24, and abuts against the back wall of the back duct 2c. Is attached. At this time, since the magnet 23 is provided on the stopper 19 that contacts the wall surface of the inner panel 3 (that is, the fixing member 29), the intermediate shelf duct 15 is firmly magnetically attached to the showcase side and does not fall off the shelf receiving bracket 20. Absent. Further, in this inserted state, the abutting surfaces of the rear end protruding portion (formation portion of the suction port 16) of the intermediate shelf duct 15 and the back wall of the rear duct 2c are held without a gap by the cushion material 16a ( (See FIG. 7). Therefore, the cool air circulating in the back duct 2c can be taken into the wind tunnel 17 of the intermediate shelf duct 15 without leakage, and the third air path C can be formed reliably.

Further, when not in use, the intermediate shelf duct 15 can be stored in a display shelf having a large depth around the lowermost stage. As the storage means, rails 21 and 21 having a U-shaped cross section are formed on the bottom shelf bracket having a depth in the same manner as the shelf bracket 20 to which the intermediate shelf duct 15 is inserted. The duct 15 is preferably inserted and stored. In this way, there is no need to make any other special storage space, and it can be stored without being conspicuous. Moreover, the storage can prevent the loss of unused intermediate shelf ducts, which is suitable for all-stage refrigeration. is there. Moreover, if stored in this way, it can be taken out and installed immediately at the time of use, so it is very convenient to use.
A shelf fence 27 and a shelf tip price rail 28 are provided at the tip of a shelf plate (glass) 26 placed on the shelf receiving bracket. In addition, in order to partition the upper and lower parts into different temperature zones by the intermediate shelf duct 15, a heat insulating material may be attached to the entire upper surface of the intermediate shelf duct 15.

  In the refrigerated showcase 1 described above, when the third air passage C and the second air passage B are working, the upper storage chamber 4 (that is, the low cold temperature zone) in which the intermediate shelf duct 15 is inserted is used. The temperature control is performed by controlling the second air path fan 12. This control is a control for turning on / off the operation of the fan 12 for blowing by a signal from a temperature sensor (not shown) provided in the upper storage chamber 4. The road fan 12 is turned off and stopped. When the road fan 12 rises above a certain level, the road fan 12 is turned on and the operation of the fan 12 is restarted to circulate the air. At this time, since the suction port 11 of the second air passage B is at a position substantially in common with the suction port 7 of the third air passage C, cold air and non-cool air are mixed. Therefore, the circulating air passing through the second air passage B can be kept slightly cooler than the store atmosphere temperature, and the upper side of the display shelf with the intermediate shelf duct 15 can be controlled to a set temperature of about 18 ° C.

In the state where all the dampers 22 are closed, cold air is blown out from the cold air outlet 6 through the first air passage A so as to refrigerate the entire storage chamber 4. When an intermediate shelf duct 15 with a wind tunnel is inserted into a display shelf at a desired position in the cabinet, and the damper 22 on the rear surface is pushed against the spring force at the rear end thereof, the opening window is opened to circulate in the duct 2c. A third air passage C is formed in which cold air is taken into the wind tunnel 17 from the suction port 16 at the rear end of the intermediate shelf duct 15 and blown downward from the discharge port 18 at the front end.
Therefore, the showcase 1 according to the present embodiment has the intermediate shelf duct 15 as a boundary, the lower side being a refrigeration temperature zone (about 5 ° C.) by cold air circulation, and the upper side being a low temperature zone (about 18 ° C.). it can.

It is a cross-sectional side view of the refrigerated showcase of the present invention. It is a front view of the showcase for refrigeration of this invention. It is a cross-sectional side view of an intermediate shelf duct. It is a front view of the display shelf which inserted the intermediate shelf duct. It is a cross-sectional side view of the display shelf which inserted the intermediate shelf duct. It is a section explanatory view in the state where a cold air partition damper was closed. It is a section explanatory view in the state where a cold air partition damper opened.

Explanation of symbols

A 1st air path B 2nd air path C 3rd air path 1 Showcase for refrigeration 2 Main body 2a Front part 2b Bottom duct 2c Rear duct 2d Ceiling duct 2e Bottom duct 2f Rear duct 2g Ceiling duct 3 Internal panel 4 Storage room 5 Display shelf 6 Cold air outlet 7 Suction port 8 Circulating fan 9 Cooler 10 Non-cool air outlet 11 Suction port 12 Circulating fan (second airway fan)
DESCRIPTION OF SYMBOLS 14 Shelf receptacle 15 Intermediate shelf duct 16 Suction port 17 Wind tunnel 18 Discharge port 19 Stopper 20 Shelf receptacle bracket 21 Rail 22 Cold air partition damper 23 Magnet 24 Spring 26 Shelf plate (glass)
27 Shelf fence 28 Shelf tip price rail 29 Fixing member

Claims (7)

In a refrigerated showcase with product display shelves in the cabinet,
A first air passage that sequentially circulates cold air through the front, bottom, back, ceiling, and front portions of the showcase to form a cooling air curtain in front;
A second air passage that forms an uncooled air curtain that circulates outside the first air passage to protect the cooling air curtain;
A cooling air is ventilated from the back part in the middle of the first air path to the front part through an intermediate shelf duct with a wind tunnel, and a third air path is formed in front of the intermediate shelf to form a cooling air curtain.
When the third air passage is formed and the first air passage is shut off, the lower part of the intermediate shelf is in the refrigeration temperature zone by the cooling air of the third air passage, and the upper part of the intermediate shelf is the weak cooling by the uncooled air of the second air passage. A refrigerated showcase that is divided into temperature zones.   2. The intermediate shelf duct is guided by a rail having a U-shaped cross section of a shelf support bracket and is detachably inserted, and can be set and switched to a desired shelf support within a moving range. Refrigerated showcase.   The showcase for refrigeration according to claim 1 or 2, wherein the intermediate shelf duct is stored in the lowest display shelf when not in use.   When the intermediate shelf duct is inserted, the stopper is provided with a magnet so that the rear end of the intermediate shelf duct is in close contact with the inner wall of the rear duct by opening a cool air partition damper that partitions the rear portion in a freely openable / closable manner. The refrigerated showcase according to claim 1, 2 or 3.   5. The refrigerated showcase according to claim 1, wherein a spring that is normally biased in a closing direction is attached to the cold air partition damper provided on the back surface portion.   The refrigerated showcase according to any one of claims 1 to 5, wherein a heat insulating material is attached to the upper part of the intermediate shelf duct.   The refrigeration according to any one of claims 1 to 6, wherein the temperature control of the upper part of the interior when the intermediate shelf duct is inserted is ON / OFF control of a second air passage fan. For showcase.

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