JPH063338B2 - Store structure with freezer / refrigerator open showcase - Google Patents

Description

TECHNICAL FIELD The present invention relates to a store structure having a freezing / refrigerating open showcase in a store, and more particularly to a cooling system for the freezing / refrigerating open showcase.

[Prior art] Conventionally, when a freezing / refrigerating open showcase is installed in a store, cooling of the freezing / refrigerating open showcase is
It was carried out individually by a dedicated refrigerator provided inside or outside the main body. It was also cooled independently of the air conditioner in the store.

[Problems to be Solved by the Invention]

As described above, the freezing / refrigerating open showcase is cooled separately from the in-store cooling machine by the refrigerator provided in the main body. Because it consumes electric power, it requires a lot of freezing and refrigerating open showcases in the store, and consumes a lot of electric power during peak power in midsummer. there were.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides an ice storage tank for in-store cooling, which is cooled by a refrigerator and stores heat, under the store floor, and a housing having an opening and By the partition plate arranged inside the housing, a freezing / refrigerating open showcase having an air passage for forming an air curtain for cooling the inside of the opening is provided on the store floor, and a space above the ice heat storage tank is provided. It is a store structure provided with a freezing / refrigerating open showcase in which the air passage is communicated with a cool air suction means and a discharging means, and the cooling means is shared between the in-store air conditioner and the freezing / refrigerating open showcase, It also aims to reduce power costs by using cheap midnight power.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

1 is a store having the store structure of the present invention. A freezing / refrigerating open showcase 4 is installed on the floor 3 of the in-store space 2 of the store 1, and water 6 is stored under the floor 3 inside the compressor 7A, a condenser 7B, and a condensing fan 7C. An ice heat storage tank 5 for refining and storing ice pieces 8 as a heat storage medium and used for cooling in the store 1 is provided by the refrigerator 7 having the evaporation pipe 7D. The ice heat storage tank 5 is covered with an outer wall 9 made of concrete and an inner wall 10 made of a heat insulating material, and is thermally insulated from the space 2 of the store 1. Further, the ice heat storage tank 5 is connected to the heat exchanger 12A of the air conditioner 12 by the pipe 11.
Is in communication with. Then, in order to bring the space 2 in the store 1 into a cooling state, the pump 13 is operated, the water 6 cooled by the evaporation pipe 7D of the refrigerator 7 and the refined ice pieces 8 are pipe 11, the heat exchanger. 12A is circulated in the circulation path, and the blower fan 12B discharges and circulates the cold air after heat exchange in the heat exchanger 12A into the space 2 as indicated by the arrow.

Freezer / Refrigerator Open Showcase 4 installed on the floor 3
Is provided with a housing 14 having an opening 13 on the front surface and a partition plate 15 between the housing 14 and the front side of the partition plate 15 as a product display room 17 equipped with a product display shelf 16, and the housing 14 and An air passage 18 is formed between the partition plate 15 and the front opening 13 for forming an air curtain. The air passage 18 is divided into an inner air passage 18A and an outer air passage 18B by a partition plate 19, and a blower fan 28 is provided in the outer air passage 18B.

A wind fan 28 is provided.

The bottom surface side of the casing 14 of the inner air passage 18A and the space 51 above the ice heat storage tank 5 are connected by a suction duct 20 and a discharge duct 21 around which heat insulating materials 20A and 20B are provided. Blower fans 22 and 23 are provided in the suction duct 20 and the discharge duct 21, respectively, and the suction duct 20 and the blower fan 22 constitute cool air suction means, and the discharge duct 21 and the blower fan 23 constitute cold air discharge means. Both the suction and discharge ducts are partitioned within the inner air passage 18A so that cold air does not join. Further, the suction duct 20 and the discharge duct 21 are divided by a baffle plate 27 provided in the space 51, respectively, a lower space 51A and an upper space 51B.
Has been extended to.

Cooling of the freezing / refrigerating open showcase 4 in the store structure configured as described above is as follows.

First, in the outer air passage 18B, a relatively warm wind is circulated by the blower fan 28 as indicated by an arrow, and the blowout port 24
An air curtain 26B that shields the front opening 13 is formed from B to the suction port 25B.

Further, in the inner air passage 18A, the lower space 51 of the ice heat storage tank 5 is provided.
Cooled air is sucked from A by the suction duct 20 and the blower fan 22, cool air is circulated as indicated by an arrow, blows from the outlet 24A toward the inlet 25A, and an air curtain 26A is formed in the front opening 13. Then, the air is discharged into the upper space 24B of the ice heat storage tank 5 by the blower fan 23 and the discharge duct 21. Since the intake duct 20 and the discharge duct 21 are covered with heat insulating materials 20A and 21A, respectively, the feet are not cooled by the cold air in both ducts, and the customer does not feel discomfort. In addition, a lower space 51 in which the suction duct 20 and the discharge duct 21 extend, respectively.
A and the upper space 51B are divided by the baffle plate 27, so that the cool air having a high temperature discharged from the discharge duct 21 after the inner air passage 18A is circulated and the air curtain 26A is formed is inside the intake duct 20. Since the sufficiently cooled cold air is always sucked into the suction duct 20, the cooling capacity of the freezing / refrigerating open showcase 4 is not deteriorated.

In this embodiment, as the cooling means of the freezing / refrigerating open showcase 4, only the cold air staying in the space 51 of the ice heat storage tank 5 is used, but, for example, the suction duct 20 and the discharge duct 21 are connected to the outer air passage 18B. The evaporator may be disposed in the inner air passage 18A while being communicated with each other, and may be constantly cooled by the cool air in the ice heat storage tank 5 and the cool air by the evaporator. Ordinarily, the blower fans 22 and 23 are stopped to evaporate. If you want to increase the cooling capacity by cooling with only the fan, operate the blower fans 22 and 23,
You may make it cool also using the cold air in the ice heat storage tank 5.

Further, as shown in FIG. 3, a damper 29 for opening and closing the suction duct 20 is provided in the suction duct 20, and temperature information detected by a temperature sensor 30 provided in the product display room 17 is input to the control circuit 31. Then, the damper opening / closing means 32 causes the damper 29 to operate according to the signal output based on the temperature information.
It is also possible to control the amount of cold air sucked into the suction duct 20 by opening and closing or changing the opening and closing angle, and perform cooling according to the temperature of the product display room 17.

Further, even if the dampers 29 are not provided and the operation, stop, rotation speed and the like of the blower fans 22 and 23 are controlled based on the temperature information from the temperature sensor 30, cooling according to the temperature of the product display room 17 can be performed. .

Further, although the store structure including the front opening type freezing / refrigerating open showcase has been described in the present embodiment, the present invention can be applied even when the top opening type freezing / refrigerating open showcase is installed in the store. Of course.

〔The invention's effect〕

As described above, the present invention uses a refrigerator to cool and store an ice heat storage tank for in-store cooling that stores heat, under a store floor, and by a casing having an opening, and a partition plate disposed inside the casing. A freezing / refrigerating open showcase having an air passage for forming an air curtain for cooling the interior of the opening is provided on the store floor, and a space above the ice heat storage tank and the air passage are provided with cold air suction means. And a discharge means for communicating with each other, the store structure is provided with an open showcase for freezing / refrigerating, and an ice storage tank for cooling the inside of the store is used to cool the store by a cooling machine, and freezing / refrigerating. Since the open showcase can be cooled at the same time, the freezer / refrigerating open showcase installed in the store as in the past can be installed inside the main body or a separate refrigerator installed outside the main body. Te, compared to had been individually cooling, power consumption is reduced, the power costs are reduced.

In particular, by using late-night electric power, which has a low electricity cost, to cool water in the ice heat storage tank and to purify and store ice as a heat storage medium, the power cost can be further reduced.

Further, the cold air in the ice heat storage tank is humidified by water and ice pieces, and is used for cooling, so that there is also an effect of humidifying the freezing / refrigerating open showcase product display room.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is an overall view of a system of a store structure in which a freezing / refrigerating open showcase according to the present invention is installed, FIG. 2 is a sectional view of a main part of the system according to the present invention, and FIG. 3 is another embodiment of a suction duct portion. The control block diagram which shows. 1 ... Store 3 ... Floor 4 ... Frozen / refrigerated open showcase 5 ... Ice heat storage tank 6 ... Water 7 ... Refrigerator 8 ... Ice piece 12 ... Cooler 14 ... Enclosure 15 ... Partition plate 18A ... Inner air passage 18B ... Outside wind Channel 20 ... Suction duct 21 ... Discharge duct 22, 23 ... Blower fan 27 ... Baffle plate 51 ... Space 51A ... Lower space 51B ... Upper space

Claims (1)

[Claims] 1. An ice heat storage tank for cooling the inside of a store, which is cooled and stored by a refrigerator, is provided under the store floor, and an inside of the storehouse is provided with an opening and a partition plate arranged inside the housing. A freezing / refrigerating open showcase provided with an air passage for forming an air curtain for cooling the ice is installed on the store floor, and the space above the ice heat storage tank and the air passage are communicated with each other by a cool air suction means and a discharge means. A store structure with a freezer / refrigerator open showcase.