JP4152147B2 - Showcase - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a plurality of shelves are installed in a display chamber that opens to the front, and a cooling mode for cooling and using the display chamber and a heating mode for heating and using the display chamber can be switched. It is related to the showcase.
[0002]
[Prior art]
Conventionally, a showcase that can be used for so-called cold / hot switching is provided with a partition plate on the inside of the heat insulating wall with a space therebetween, thereby defining a display chamber that opens to the front surface by the partition plate, A duct is formed between the heat insulating walls, and a cooler and a blower are installed in the duct. In addition, a plurality of shelves are installed vertically in the display room, and an electric heater is attached to each shelf.
[0003]
A cooling mode for cooling the entire display chamber while forming a cool air curtain in the opening by discharging cool air from the upper edge of the opening of the display chamber through the duct in a state where heat generation of the electric heaters of each shelf is stopped In addition, the cooling operation by the cooler and the heating mode in which the electric heaters provided on the shelves are heated while the operation of the blower is stopped to heat the entire display room can be switched and used.
[0004]
Further, an intermediate cold air duct for discharging cool air toward the front opening below the shelf through the duct is formed, for example, on the lower side of the first-stage shelf installed in the display room. Yes. Then, the cool air directed to the duct above the first shelf is blocked, the cool air is discharged from the intermediate cool air duct, the electric heater on the first shelf is heated, and the heat on the lower heater is stopped. Thus, only the display room above the first shelf is set to the heating mode, and the display room below the first shelf is also used as the cooling mode.
[0005]
[Problems to be solved by the invention]
In such a showcase, the second and third shelves below the first shelf are removed according to the height of the product, and the interval between them can be changed. Therefore, when displaying a product with a large height, the second shelf is removed, but the storage location of this shelf has not been provided in the showcase itself, so usually a warehouse or the like. It was finished. For this reason, there is a problem that the management becomes complicated, for example, the storage location becomes unknown when it is desired to restore the number of shelves.
[0006]
The present invention has been made to solve the conventional technical problems, and it is an object of the present invention to be able to safely and reliably store unused shelves in a so-called cold / hot switching use showcase. And
[0007]
[Means for Solving the Problems]
The showcase of the present invention defines a display chamber that opens to the front surface by a partition plate that is attached to the inside of the heat insulation wall with a space therebetween, and forms a duct between the partition plate and the heat insulation wall. A cooling mode in which a plurality of shelves are installed and cooling air is discharged from the upper edge of the opening of the display chamber through a duct, and a heating mode in which the electric heater provided on the shelf generates heat. Intermediate cold air for discharging cold air toward the opening below the first shelf below the first shelf constructed in the upper part of the display room. A duct is formed, the electric heater of the first shelf is heated, the cool air is discharged from the intermediate cool air duct, and only the display room above the first shelf is heated so that it can be used. A first erected below the first shelf along the lower side When the second shelf constructed below the first shelf is removed in order to match the height dimension of the goods to be displayed, the second shelf is attached to the intermediate cold air duct. It can be stored safely and securely along the lower side.
[0008]
Thereby, storage management when the second shelf is not required becomes extremely easy. Further, since the second shelf is stored along the lower side of the intermediate cold air duct below the first shelf, the product accommodation capacity in the display room is hardly hindered.
[0009]
In particular, when the second shelf is stored along the lower side of the intermediate cold air duct, energization to the electric heater of the second shelf is prohibited, so that the display room is not used when the second shelf is not used. When the whole is set to the heating mode, it is possible to avoid inconvenience that the electric heater of the second shelf generates heat. Thereby, an increase in unnecessary power consumption can be prevented.
[0010]
In the showcase of the invention of claim 2, in addition to the above, the front part of the second shelf is shaped so that the cold air discharged from the intermediate cold air duct can be directed downward. When stored in the lower side of the intermediate cool air duct, the cool air discharged from the intermediate cool air duct can be smoothly directed in the opening direction by the front shape of the second shelf. Thereby, the cooling performance in the display room below the first shelf is improved.
[0011]
Since the showcase of the invention of claim 3 is provided with a heat insulating material on the second shelf in addition to the above-mentioned inventions, when the second shelf is stored under the intermediate cold air duct, it passes through the intermediate cold air duct. Thus, it is possible to prevent inconvenience that condensation occurs on the second shelf due to the cooling action from the cool air.
[0012]
In addition to the above inventions, the showcase of the invention of claim 4 gradually narrows the passage area of the duct below the first shelf as it goes upward, and the passage area of the duct above the first shelf. Therefore, the flow rate of the cool air discharged from the upper edge of the opening can be increased, and a good cool air curtain can be formed in the opening. Thus, it is possible to improve the cooling capacity by reducing the amount of outside air flowing into the display chamber during the cooling mode.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a cross-sectional view of a showcase 1 according to an embodiment to which the present invention is applied, FIG. 2 is a cross-sectional view of the showcase 1 in a state where a second shelf 2B is stored, and FIG. 3 is a shelf of the showcase 1 in FIG. 4B is an enlarged cross-sectional view of the rear part of 2B, FIG. 4 is a perspective view of the support column 4 holding the partition plate 9 of the showcase 1, and FIG. 5 is an enlarged cross-sectional view of the front part of the shelf 2B.
[0014]
The showcase 1 according to the embodiment is an open showcase that is installed in a store such as a supermarket or a convenience store and can be used for so-called cold / temperature switching for displaying and selling canned beverages and beverages with plastic bottles. Both sides of the heat insulating wall 7 are closed with side plates 8 and 8, and a partition plate 9 is attached inside the heat insulating wall 7 with a space therebetween, thereby defining a display chamber 11 that opens to the front inside the partition plate 9. is doing. A series of ducts 12 extending from the lower side of the display chamber 11 to the rear side and the upper side are formed between the partition plate 9 and the heat insulating wall 7.
[0015]
A cooler 13 and a blower 10 are installed in the duct 12, a discharge port 14 is formed at the upper edge of the front opening of the display chamber 11, and a suction port 16 is formed at the lower edge. It communicates with the duct 12. The cooler 13 constitutes a known refrigerant circuit together with a compressor and a condenser (not shown). In the display chamber 11, four upper and lower shelves 2A, 2B, 2C, and 2D are installed in the embodiment. Each of the shelves 2 </ b> A to 2 </ b> D is configured by attaching a drawable shelf 19 to the bracket 18, and a heat insulating material 21 is attached to the lower surface of the shelf 19, and an electric heater 22 is provided between the shelf 19 and the heat insulating material 21. Is attached (FIG. 3).
[0016]
Further, engagement claws 23 and 23 are formed at the rear ends of the brackets 18 of the respective shelves 2 </ b> A to 2 </ b> C. The shelves 2A to 2C are detachably installed in the display chamber 11 by being detachably engaged with the holes 24 (see FIGS. 3 and 4). However, the height of the first shelf 2A is fixed.
[0017]
Then, as shown in the drawings, the partition plate 9 and the support column 4 gradually approach the heat insulating wall 7 from the bottom to the top, and rise vertically from the position of the first shelf 2A. Thereby, the passage area of the duct 12 below the first-stage shelf 2A is gradually narrowed toward the upper side, and the passage area of the duct 12 above the first-stage shelf 2A is configured to be the smallest. Yes.
[0018]
Further, an intermediate duct member 27 is attached to the lower side of the first shelf 2 </ b> A so as to extend forward from the partition plate 9, and an intermediate cool air duct 28 is formed in the intermediate duct member 27. . The rear end of the intermediate cool air duct 28 communicates with the duct 12, and the front end is directed downward of the opening due to the downward shape of the intermediate duct member 27. A closing plate 30 is attached to the upper side of the communication location between the intermediate cold air duct 28 and the duct 12 so that the inside of the duct 12 can be opened and closed.
[0019]
Further, the second shelf 2B has the smallest dimension that can be arranged along the lower side of the intermediate duct member 27, and the front portion of the second shelf 2B has cold air discharged from the intermediate cold air duct 28 as shown in FIG. It is made into the shape which inclined in the front lower direction so that may be directed to the opening downward direction. Further, a switch 29 is attached to the duct 12 side of an engagement hole (shown by 24A in FIG. 3) located immediately below the intermediate duct member 27 (FIGS. 3 and 4).
[0020]
Next, the operation of the above configuration will be described.
(1) Cooling mode First, when the cooling mode in which the entire display chamber 11 is refrigerated is set, the energization (heat generation) to the electric heaters 22 of the shelves 2A to 2D is stopped, and the closing plate 30 is opened. . When the compressor and the blower 10 are operated in this state, the cooler 13 exhibits a cooling action. The cool air cooled by the cooler 13 is blown up in the duct 12 by the blower 10 and is mainly discharged from the discharge port 14 at the upper edge of the opening toward the opening, and is also partially opened from the intermediate cool air duct 28. The cool air is then sucked into the duct 12 from the suction port 16.
[0021]
The operation of the compressor is turned on and off between a predetermined cooling upper limit temperature and a cooling lower limit temperature based on the temperature of the cool air discharged into the display chamber 11 or the display chamber 11. In addition, the blower 10 is continuously operated, whereby a cool air curtain is formed in front of the opening of the display chamber 11, and a part of the blower 10 circulates in the display chamber 11 to pass a predetermined refrigeration temperature (+5). To about 10 ° C to about + 10 ° C.
[0022]
At this time, as described above, the passage area of the duct 12 below the first-stage shelf 2A gradually decreases as it goes upward, and the passage area of the duct 12 above the first-stage shelf 2A becomes the narrowest. Since it is comprised, the flow velocity of the cold air discharged from the discharge port 14 at the upper edge of the opening can be increased, and a good cold air curtain can be formed in the opening. As a result, it is possible to improve the cooling capacity by reducing the amount of outside air flowing into the display chamber 11 during the cooling mode.
[0023]
(2) Heating mode Next, when it is set as the heating mode which heats the inside of the display chamber 11, the operation | movement of the said compressor and the air blower 10 is stopped, and it supplies with electricity to the electric heater 22 of each shelf 2A-2D To generate heat. The electric heater 22 is also turned off and on between a predetermined heating upper limit temperature and a heating lower limit temperature based on, for example, the temperature of the shelf 19. Thereby, the goods on each shelf 2A-2D are heated to about + 60 ° C. to + 80 ° C.
[0024]
(3) Cold / Temperature Mode Next, when the first shelf 2A is heated and the lower display chamber 11 is cooled / cooled in the cooling / temperature mode, each shelf 2B- The energization (heat generation) to the 2D electric heater 22 is stopped, and the closing plate 30 is closed. Further, the electric heater 22 of the first shelf 2A is energized to generate heat. When the compressor and the blower 10 are operated in this state, the cooler 13 exhibits a cooling action. The cool air cooled by the cooler 13 is blown up in the duct 12 by the blower 10, blocked by the closing plate 30, enters the intermediate cool air duct 28, and is discharged from its front end toward the opening below it. At the same time, the air is sucked into the duct 12 from the suction port 16.
[0025]
The operation of the compressor is similarly turned on between a predetermined cooling upper limit temperature and a cooling lower limit temperature based on the temperature of the cool air discharged into the display chamber 11 (in the display chamber 11 below the shelf 2A) or the display chamber 11. -Turned off. Further, the blower 10 is continuously operated, whereby a cool air curtain is formed in front of the opening of the display chamber 11 below the shelf 2A, and a part is circulated in the display chamber 11 to display below the shelf 2A. The inside of the chamber 11 is cooled to a predetermined refrigeration temperature (about + 5 ° C. to + 10 ° C.).
[0026]
On the other hand, the electric heater 22 of the shelf 2A is similarly turned off and on between a predetermined heating upper limit temperature and a heating lower limit temperature based on the temperature of the shelf board 19. Thereby, only the goods on the shelf 2A are heated to about + 60 ° C. to + 80 ° C.
[0027]
Here, for example, when a beverage containing a tall plastic bottle is displayed in the display chamber 12, the bracket 18 of the second shelf 2B is removed from the support column 4, and the lower side of the intermediate duct member 27 as shown in FIG. Store along. At this time, the engaging claws 23, 23 of the bracket 18 are engaged and held in an engaging hole (24A in FIG. 3) located immediately below the intermediate duct member 27. At this time, the engaging claw 23 pushes the switch 29 to turn on the contact. When the contact of the switch 29 is turned on, the energization circuit to the electric heater 22 on the shelf 2B is opened, and energization is prohibited.
[0028]
In this state, as shown in FIG. 2, a display space having a large vertical dimension is formed on the third shelf 2C (between the stored shelf 2B). Thereby, a tall product can be displayed on the shelf 2C.
[0029]
In this way, when removing the second shelf 2B in order to match the height of the product to be displayed, the shelf 2B is stored along the lower side of the intermediate duct member 27 constituting the intermediate cool air duct 28. Therefore, storage management when the shelf 2B is not required becomes extremely easy. Further, since the shelf 2B is stored along the lower side of the intermediate duct member 27 (intermediate cold air duct 28) on the lower side of the shelf 2A, there is hardly any problem in the product accommodation capacity in the display chamber 11.
[0030]
Further, since the front portion of the shelf 2B has an inclined shape that directs the cold air discharged from the intermediate cold air duct 28 downward, when the shelf 2B is stored below the intermediate duct member 27, the shelf 2B The front shape allows the cool air discharged from the intermediate cool air duct 28 to be smoothly directed in the opening direction. Thereby, the cooling performance in the display chamber 11 below the shelf 2A is improved.
[0031]
Further, when the shelf 2B is stored along the lower side of the intermediate duct member 27, the switch 29 prohibits the energization of the electric heater 22 of the shelf 2B, so that the display room is not used when the shelf 2B is not used. When the entire interior 11 is set to the heating mode, it is possible to avoid the inconvenience that the electric heater 22 of the shelf 2B generates heat. As a result, unnecessary increase in power consumption can be prevented.
[0032]
Furthermore, since the heat insulating material 21 is attached to the shelf 2B, when the shelf 2B is stored below the intermediate duct member 27, the shelf 2B is cooled by the cooling action from the cold air passing through the intermediate cold air duct 28. It is possible to prevent the inconvenience that dew condensation occurs on the shelf board 19.
[0033]
As described above, the passage area of the duct 12 below the shelf 2A is gradually narrowed as it goes upward, and the passage area of the duct 12 above the shelf 2A is the narrowest. The flow rate of the cool air discharged from the air can be increased, and a good cool air curtain can be formed in the opening. As a result, it is possible to improve the cooling capacity by reducing the amount of outside air flowing into the display chamber 11 during the cooling mode.
[0034]
In the embodiment, the electric heaters 22 are attached to all the shelves 2A to 2D so that the entire display chamber 11 can be heated in the heating mode. However, the invention of the first and second aspects is not limited thereto. The electric heater 22 may be attached only to the first shelf 2A, and only the shelf 2A is heated in the heating mode, and the inside of the display chamber 11 below the shelf 2A is cooled. That is, in this case, the cold / warm mode of the embodiment is the warming mode.
[0035]
【The invention's effect】
As described above in detail, according to the present invention, a display chamber that opens to the front surface is defined by a partition plate that is attached to the inside of the heat insulation wall with a space therebetween, and a duct is formed between the partition plate and the heat insulation wall. In addition, a plurality of shelves are installed in the display chamber, and cooling air is cooled by discharging cool air from the upper edge of the opening of the display chamber through a duct, and the electric heater provided in the shelf generates heat. In the showcase that can be switched to the heating mode to be used, in order to discharge cold air toward the opening below the first shelf, below the first shelf built in the upper part of the display room The intermediate cool air duct is formed, the electric heater of the first shelf is heated, the cool air is discharged from the intermediate cool air duct, and only the display room above the first shelf is heated and can be used. Under the first shelf along the underside of the cold air duct When the second shelf constructed below the first shelf is removed in order to match the height dimension of the commodity to be displayed, the second shelf constructed in the second shelf can be stored. The shelf can be stored and placed along the lower side of the intermediate cold duct.
[0036]
Thereby, storage management when the second shelf is not required becomes extremely easy. Further, since the second shelf is stored along the lower side of the intermediate cold air duct below the first shelf, the product accommodation capacity in the display room is hardly hindered.
[0037]
In particular, when the second shelf is stored along the lower side of the intermediate cold air duct, energization to the electric heater of the second shelf is prohibited, so that the display room is not used when the second shelf is not used. When the whole is set to the heating mode, it is possible to avoid inconvenience that the electric heater of the second shelf generates heat. Thereby, an increase in unnecessary power consumption can be prevented.
[0038]
According to the invention of claim 2, in addition to the above, the front portion of the second shelf is shaped so that the cool air discharged from the intermediate cool air duct can be directed downward. Is stored below the intermediate cold air duct, the shape of the front portion of the second shelf enables the cool air discharged from the intermediate cold air duct to be smoothly directed in the opening direction. Thereby, the cooling performance in the display room below the first shelf is improved.
[0039]
Furthermore, according to the invention of claim 3, since the heat insulating material is provided on the second shelf in addition to the above-described inventions, when the second shelf is stored under the intermediate cold air duct, the intermediate cold air duct is It is possible to prevent inconvenience that condensation occurs on the second shelf due to the cooling action from the passing cold air.
[0040]
Furthermore, according to the invention of claim 4, in addition to each of the above-mentioned inventions, the passage area of the duct below the first shelf is gradually narrowed upward, and the duct of the duct above the first shelf is reduced. Since the passage area is the narrowest, the flow rate of the cool air discharged from the upper edge of the opening can be increased, and a good cool air curtain can be formed in the opening. Thus, it is possible to improve the cooling capacity by reducing the amount of outside air flowing into the display chamber during the cooling mode.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an example showcase to which the present invention is applied.
FIG. 2 is a cross-sectional view of a showcase in a state where a second shelf is stored.
FIG. 3 is an enlarged cross-sectional view of a rear part of the shelf of the showcase of FIG.
FIG. 4 is a perspective view of a support column that holds a partition plate of a showcase according to an embodiment of the present invention.
FIG. 5 is an enlarged cross-sectional view of a shelf front part in the second stage of the showcase of FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Showcase 2A-2D Shelf 4 Support | pillar 7 Heat insulation wall 9 Partition plate 10 Blower 11 Display chamber 12 Duct 13 Cooler 14 Discharge port 16 Suction port 19 Shelf plate 21 Heat insulating material 22 Electric heater 27 Intermediate duct member 28 Intermediate cool air duct 29 Switch 30 Blocking plate

Claims (4)

A display chamber that opens to the front is defined by a partition plate that is attached to the inside of the heat insulating wall with a space therebetween. A duct is formed between the partition plate and the heat insulating wall, and a plurality of stages are provided in the display chamber. A cooling mode in which a shelf is installed and cooling air is discharged from the upper edge of the opening of the display chamber through the duct, and a heating mode in which the electric heater provided in the shelf generates heat is provided. In the showcase that can be switched,
An intermediate cold air duct for discharging cold air toward the opening below the first shelf is formed below the first shelf constructed in the upper part of the display chamber, Heating the electric heater, discharging cool air from the intermediate cool air duct and heating only the display chamber above the first shelf and enabling use,
The second shelf constructed below the first shelf can be stored along the lower side of the intermediate cool air duct, and the second shelf can be stored along the lower side of the intermediate cool air duct. In such a case, energizing the electric heater on the second shelf is prohibited .   The showcase according to claim 1, wherein the front portion of the second shelf has a shape capable of directing the cool air discharged from the intermediate cool air duct downward. The showcase according to claim 1 or 2, wherein a heat insulating material is provided on the second shelf . 2. The passage area of the duct below the first shelf is gradually narrowed as it goes upward, and the passage area of the duct above the first shelf is made the smallest. The showcase according to claim 2 or claim 3 .

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