JP2004069275A - Showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To safely and surely keep unused racks in a showcase usable by switching between cool and hot modes. <P>SOLUTION: This showcase 1 forms a display chamber 11 opened to a front by partition plates 9 installed on the inside of an insulating wall 7 at specified intervals. A duct 12 is formed between the partition plates and the insulating wall, and multiple stages of racks 2A to 2D are installed in the display chamber. The showcase can be used switchingly between the cooling mode for cooling the inside of the display chamber by discharging cool air from the opening upper edge of the display chamber through the duct and a heating mode for heating electric heaters installed on the racks. An intermediate cool air duct 28 for charging cool air toward the opening below the rack 2A is formed below the rack 2A installed on the inside upper part of the display chamber, the electric heater on the rack 2A is heated, and the cool air is discharged from the intermediate cool air duct to heat only the inside of the display chamber on the upper side of the rack 2A so as to be used, and the rack 2B is formed to be stored along the lower side of the intermediate cool air duct. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
In the present invention, a plurality of shelves are erected in a display room opening to the front, and a cooling mode for cooling and using the display room and a heating mode for heating and using the display room can be switched. It's about showcases.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a so-called cold / hot switching useable showcase has a partition plate attached at an interval inside an insulating wall, the partition plate defines a display room opened on the front side, and a partition plate and a 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 vertically provided in the display room, and each shelf is provided with an electric heater.
[0003]
A cooling mode in which cooling air is discharged from the upper edge of the opening of the display room through the duct while the heat of the electric heater of each shelf is stopped to form a cool air curtain at the opening, thereby cooling the entire display room. In addition, it is possible to switch between a heating mode in which the cooling operation of the cooler and the operation of the blower are stopped and an electric heater provided on each shelf generates heat to heat the entire display room.
[0004]
Further, an intermediate cool air duct for discharging cool air toward a front opening below the shelf via the duct is formed on a lower side of, for example, a first shelf installed in an upper portion in the display room. I have. Then, the cool air flowing toward the duct above the first shelf is blocked, the cool air is discharged from the intermediate cool air duct, and the electric heater of the first shelf is heated, and the electric heater of the lower shelf is stopped. Thus, only the display room above the first-stage shelf can be used in the heating mode, and the display room below the first-stage shelf can be used in the cooling mode.
[0005]
[Problems to be solved by the invention]
In such a showcase, the second and third tiers below the first tier can be removed in accordance with the height of the product, and the spacing between them can be changed. Therefore, when displaying a product with a large height, the second shelf is removed. However, conventionally, a storage place for this shelf has not been provided in the showcase itself, and therefore, usually, a warehouse or the like is used. I was being worked on. For this reason, there is a problem that management becomes complicated, for example, the storage location becomes unknown when it is desired to restore the number of shelves.
[0006]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem, and an object of the present invention is to enable safe and reliable storage of unused shelves in a so-called cold / hot changeable showcase. And
[0007]
[Means for Solving the Problems]
The showcase of the present invention defines a display room that opens to the front by a partition plate attached at an interval inside the heat insulating wall, forms a duct between the partition plate and the heat insulating wall, and forms a display room. 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 room through a duct to cool the display room, and a heating mode in which an electric heater provided on the shelf generates heat. Intermediate cold air for discharging cold air toward an opening below the first shelf below a first shelf erected above the display room. A duct is formed, the electric heater of the first shelf is heated, and cool air is discharged from the intermediate cool air duct to heat only the display room above the first shelf to enable use. Along the bottom, below the first shelf Can be stored, when removing the second shelf below the first shelf in order to adjust to the height dimension of the product to be displayed, the second shelf is connected 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 becomes unnecessary becomes extremely easy. In addition, since the second shelf is stored along the lower side of the intermediate cool air duct below the first shelf, there is almost no problem with the product accommodation capacity in the display room.
[0009]
In the showcase according to the second aspect of the present invention, in addition to the above, the front portion of the second shelf has a shape capable of directing the cool air discharged from the intermediate cool air duct downward. When stored in the lower side of the intermediate cool air duct, the shape of the front portion of the second shelf allows the cool air discharged from the intermediate cool air duct to be smoothly directed in the opening direction. Thereby, the cooling performance in the display room below the first shelf is improved.
[0010]
In the showcase of the third aspect of the invention, in addition to the above inventions, when the second shelf is stored along the lower side of the intermediate cool air duct, energization to the electric heater of the second shelf is prohibited. Therefore, when the entire display room is set to the heating mode when the second shelf is not used, it is possible to avoid the disadvantage that the electric heater of the second shelf generates heat. As a result, an unnecessary increase in power consumption can be prevented.
[0011]
In the showcase according to the fourth aspect of the present invention, since the second shelf is provided with a heat insulating material in addition to the above inventions, when the second shelf is stored under the intermediate cool air duct, the showcase passes through the intermediate cool air duct. This prevents the inconvenience of dew condensation occurring on the second shelf due to the cooling action from the cold air.
[0012]
According to a fifth aspect of the present invention, in addition to the above inventions, the passage area of the duct below the first shelf is gradually narrowed upward, and the passage area of the duct above the first shelf is gradually reduced. , 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 at the opening. This makes it possible to reduce the amount of outside air flowing into the display room in the cooling mode, thereby improving the cooling capacity.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 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 a showcase 1 in which a second-stage shelf 2B is stored, and FIG. 3 is a shelf of the showcase 1 in FIG. FIG. 4 is an enlarged cross-sectional view of the rear portion of the shelf 2B, FIG. 4 is a perspective view of the column 4 holding the partition plate 9 of the showcase 1, and FIG.
[0014]
The showcase 1 of the embodiment is a so-called cold / hot switchable open showcase which is installed in a store such as a supermarket or a convenience store and displays and sells canned beverages and beverages in plastic bottles. Both sides of the heat insulating wall 7 are closed with side plates 8, 8, and a partition plate 9 is attached inside the heat insulating wall 7 with a space therebetween, thereby defining a display room 11 having a front opening inside the partition plate 9. are doing. A series of ducts 12 are formed between the partition plate 9 and the heat insulating wall 7 from the lower side of the display room 11 to the rear side and the upper side.
[0015]
A cooler 13 and a blower 10 are installed in the duct 12, and a discharge port 14 is formed at an upper edge of a front opening of the display room 11, and a suction port 16 is formed at a lower edge thereof. It communicates with the duct 12. The cooler 13 forms a well-known refrigerant circuit together with a compressor and a condenser (not shown). In the embodiment, four shelves 2A, 2B, 2C, and 2D are installed in the display room 11 in the embodiment. Each of the shelves 2 </ b> A to 2 </ b> D is configured by attaching a drawable shelf 19 to a bracket 18, and a heat insulating material 21 is attached to the lower surface of the shelf 19, and an electric heater 22 Are attached (FIG. 3).
[0016]
Engaging claws 23, 23 are formed at the rear end of the bracket 18 of each of the shelves 2A to 2C, and these engaging claws 23, 23 are engaged with the columns 4 formed on the left and right sides of the partition plate 9 respectively. The shelves 2A to 2C are removably mounted in the display room 11 by being removably 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 each figure, the partition plate 9 and the strut 4 gradually approach the heat insulating wall 7 from the bottom to the top, and vertically rise from the position of the first shelf 2A. Thereby, the passage area of the duct 12 below the first shelf 2A is gradually narrowed upward, and the passage area of the duct 12 above the first shelf 2A is minimized. I have.
[0018]
Further, an intermediate duct member 27 is attached to the lower side of the first shelf 2A 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 of the intermediate cool air duct 28 is directed downward at the opening by the downward shape of the intermediate duct member 27. A closing plate 30 is attached above the communication point between the intermediate cool air duct 28 and the duct 12 so that the inside of the duct 12 can be opened and closed.
[0019]
The second shelf 2B has the smallest size that can be arranged along the lower side of the intermediate duct member 27, and the front portion thereof has a cool air discharged from the intermediate cool air duct 28 as shown in FIG. Is inclined forward and downward so as to be directed downward from the opening. Further, a switch 29 is mounted on the duct 12 side of an engagement hole (indicated 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, in the case of a cooling mode in which the entire display room 11 is refrigerated, 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 then the cool air is sucked into the duct 12 from the suction port 16.
[0021]
The operation of the compressor is turned on and off between a predetermined upper cooling temperature limit and a lower cooling temperature limit based on the temperature of the cool air discharged into or into the display room 11. Further, the blower 10 is operated continuously, whereby a cool air curtain is formed in front of the opening of the display room 11, and a part of the blower 10 circulates in the display room 11, and the inside of the display room 11 has a predetermined refrigeration temperature (+5). (About + 10 ° C).
[0022]
At this time, as described above, the passage area of the duct 12 below the first shelf 2A gradually decreases as going upward, and the passage area of the duct 12 above the first shelf 2A becomes the smallest. With this configuration, the flow rate of the cool air discharged from the discharge port 14 at the upper edge of the opening can be increased, and a good cool air curtain can be formed at the opening. This makes it possible to reduce the amount of outside air flowing into the display room 11 in the cooling mode, thereby improving the cooling capacity.
[0023]
(2) Heating Mode Next, in a heating mode in which the entire display room 11 is heated, the operation of the compressor and the blower 10 is stopped, and the electric heaters 22 of the shelves 2A to 2D are energized. And generate heat. The electric heater 22 is also turned on and off between a predetermined heating upper limit temperature and a heating lower limit temperature based on, for example, the temperature of the shelf board 19. Thereby, the products on each of the shelves 2A to 2D are heated to about + 60 ° C to + 80 ° C.
[0024]
(3) Cooling / heating mode Next, when the cooling / heating mode in which the upper shelf 2A of the first tier is heated and the inside of the lower display room 11 is cooled is set, the respective shelves 2B to 2 tier and below are set. The energization (heating) of the 2D electric heater 22 is stopped, and the closing plate 30 is closed. 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, is blocked by the closing plate 30, enters the intermediate cool air duct 28, and is discharged from its front end toward the opening below. At the same time, it is sucked into the duct 12 from the suction port 16.
[0025]
Similarly, the operation of the compressor is turned on between a predetermined upper cooling temperature limit and a lower cooling temperature limit based on the temperature of cold air discharged into the display room 11 (in the display room 11 below the shelf 2A) or into the display room 11. -Is turned off. In addition, the blower 10 is continuously operated, whereby a cool air curtain is formed on the front of the opening of the display room 11 below the shelf 2A, and a part of the air is circulated in the display room 11 and the display below the shelf 2A is displayed. 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 2 </ b> A is similarly turned off and on between the predetermined upper heating temperature limit and the lower heating temperature limit based on the temperature of the shelf board 19. Thereby, only the products on the shelf 2A are heated to about + 60 ° C. to + 80 ° C.
[0027]
Here, when displaying a tall PET bottled beverage in the display room 12, for example, the bracket 18 of the second shelf 2B is removed from the column 4 and the lower side of the intermediate duct member 27 as shown in FIG. Store along. At this time, the engagement claws 23 of the bracket 18 are engaged with and held by the engagement holes (24A in FIG. 3) located immediately below the intermediate duct member 27. At this time, the engagement claw 23 presses the switch 29 to turn on the contact. When the contact of the switch 29 is turned on, the power supply circuit to the electric heater 22 of the shelf 2B is opened, and power supply is prohibited.
[0028]
In this state, a display space having a large vertical dimension is formed on the third shelf 2C (between the stored shelf 2B) as shown in FIG. As a result, tall products can be displayed on the shelf 2C.
[0029]
As described above, when removing the second-stage shelf 2B in order to adjust to the height dimension of the displayed product, the shelf 2B is stored along the lower side of the intermediate duct member 27 constituting the intermediate cool air duct 28. Since the shelf 2B becomes unnecessary, storage management when the shelf 2B becomes unnecessary becomes extremely easy. Further, since the shelf 2B is stored along the lower side of the intermediate duct member 27 (intermediate cool air duct 28) below the shelf 2A, the product accommodation capacity in the display room 11 hardly suffers.
[0030]
In addition, the front portion of the shelf 2B has an inclined shape for directing the cool air discharged from the intermediate cool air duct 28 downward, so that when the shelf 2B is stored below the intermediate duct member 27, The front shape allows the cool air discharged from the intermediate cool air duct 28 to be smoothly directed to the opening direction. Thereby, the cooling performance in the display room 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 inhibits the power supply to the electric heater 22 of the shelf 2B, so that the display room can be used when the shelf 2B is not used. When the entire interior of the rack 11 is set to the heating mode, the inconvenience that the electric heater 22 of the shelf 2B generates heat can be avoided beforehand. As a result, it is possible to prevent unnecessary power consumption from increasing.
[0032]
Furthermore, since the heat insulating material 21 is attached to the shelf 2B, when the shelf 2B is stored under the intermediate duct member 27, the cooling operation from the cold air passing through the intermediate cool air duct 28 causes the shelf 2B to be cooled. It is possible to prevent the disadvantage that dew condensation occurs on the shelf board 19.
[0033]
Then, as described above, the passage area of the duct 12 below the shelf 2A is gradually narrowed upward, and the passage area of the duct 12 above the shelf 2A is made the smallest. The flow rate of the cool air discharged from the nozzle can be increased, and a good cool air curtain can be formed at the opening. This makes it possible to reduce the amount of outside air flowing into the display room 11 in the cooling mode, thereby improving the cooling capacity.
[0034]
In the embodiment, the electric heaters 22 are attached to all of the shelves 2A to 2D so that the entire inside of the display room 11 can be heated in the heating mode. However, the invention of claims 1 and 2 is not limited thereto. Alternatively, the electric heater 22 may be attached only to the first shelf 2A, and only the shelf 2A may be heated in the heating mode, and the inside of the display room 11 below the shelf 2A may be cooled. That is, in that case, the cooling / heating mode of the embodiment becomes the heating mode.
[0035]
【The invention's effect】
As described in detail above, according to the present invention, a display room that opens to the front is defined by a partition plate attached at an interval inside a heat insulating wall, and a duct is formed between the partition plate and the heat insulating wall. In addition, a cooling mode in which a plurality of shelves are installed in the display room and cool air is discharged from the upper edge of the opening of the display room through a duct to cool the display room, and an electric heater provided on the shelf generates heat. In the showcase in which the switching between the heating mode and the heating mode is enabled, in order to discharge the cool air toward the opening below the first shelf below the first shelf erected above the display room. The intermediate cold air duct is formed, the electric heater of the first shelf is heated, the cool air is discharged from the intermediate cold air duct, and only the display room above the first shelf is heated to be usable. Along the lower side of the cold air duct, below the first shelf Can be stored, so that when removing the second shelf below the first shelf in order to adjust to the height of the displayed product, the second shelf is removed. The shelf can be stored and placed along the lower side of the intermediate cool air duct.
[0036]
Thereby, storage management when the second shelf becomes unnecessary becomes extremely easy. In addition, since the second shelf is stored along the lower side of the intermediate cool air duct below the first shelf, there is almost no problem with the product accommodation capacity in the display room.
[0037]
According to the second aspect of the present invention, in addition to the above, the front portion of the second shelf has a shape capable of directing the cool air discharged from the intermediate cool air duct downward. Is stored under the intermediate cool air duct, the front shape of the second shelf allows the cool air discharged from the intermediate cool air duct to be smoothly directed in the opening direction. Thereby, the cooling performance in the display room below the first shelf is improved.
[0038]
Further, according to the third aspect of the present invention, in addition to the above-described inventions, when the second shelf is stored along the lower side of the intermediate cool air duct, energization of the electric heater of the second shelf is prohibited. With this configuration, when the entire display room is set to the heating mode when the second shelf is not used, it is possible to prevent the electric heater of the second shelf from generating heat. As a result, an unnecessary increase in power consumption can be prevented.
[0039]
Furthermore, according to the invention of claim 4, since the second shelf is provided with a heat insulating material in addition to the above-mentioned inventions, when the second shelf is stored under the intermediate cool air duct, the intermediate cool air duct is provided. This prevents the inconvenience of dew condensation occurring on the second shelf due to the cooling action from the cool air passing through the second shelf.
[0040]
According to the invention of claim 5, in addition to the above-mentioned inventions, the passage area of the duct below the first shelf is gradually narrowed upward, and the passage of the duct above the first shelf is gradually reduced. Since the area is minimized, the flow velocity of the cool air discharged from the upper edge of the opening can be increased, and a good cool air curtain can be formed at the opening. This makes it possible to reduce the amount of outside air flowing into the display room in the cooling mode, thereby improving the cooling capacity.
[Brief description of the drawings]
FIG. 1 is a sectional view of a showcase according to an embodiment to which the present invention is applied.
FIG. 2 is a cross-sectional view of the showcase in a state where a second shelf is stored.
FIG. 3 is an enlarged sectional view of a rear portion of a shelf of the showcase of FIG. 2;
FIG. 4 is a perspective view of a column holding a partition plate of the showcase according to the embodiment of the present invention.
5 is an enlarged cross-sectional view of a front part of a second shelf of the showcase of FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Showcase 2A-2D Shelf 4 Post 7 Heat insulation wall 9 Partition plate 10 Blower 11 Display room 12 Duct 13 Cooler 14 Discharge port 16 Suction port 19 Shelf board 21 Insulation material 22 Electric heater 27 Intermediate duct member 28 Intermediate cold air duct 29 Switch 30 closing plate

Claims (5)

A display panel that opens to the front is defined by partition plates attached at intervals inside the heat insulating wall, and a duct is formed between the partition plate and the heat insulating wall, and a plurality of stages are provided in the display room. A shelf mode, in which a cooling mode in which the display room is cooled by discharging cool air from an upper edge of the opening of the display room through the duct, and a heating mode in which an electric heater provided in the shelf generates heat. In the showcase where switching was enabled,
An intermediate cool air duct for discharging cool air toward the opening below the first shelf is formed below the first shelf laid on the upper part of the display room. The electric heater is heated, and only the display room above the first shelf is heated by discharging cool air from the intermediate cool air duct to be usable, and
A showcase, wherein a second shelf erected below the first shelf can be stored along a lower side of the intermediate cool air duct. The showcase according to claim 1, wherein a front portion of the second shelf has a shape capable of directing cool air discharged from the intermediate cool air duct downward. The show according to claim 1 or 2, wherein when the second shelf is stored along a lower side of the intermediate cool air duct, energization of the electric heater of the second shelf is prohibited. Case. 4. The showcase according to claim 1, wherein a heat insulating material is provided on the second shelf. The passage area of the duct below the first shelf is gradually narrowed upward, and the passage area of the duct above the first shelf is minimized. The showcase according to claim 2, 3, or 4.

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