JPH03177771A - Structure of shop equipped with freezing and refrigerating open showcase - Google Patents

Abstract

PURPOSE:To reduce the cost of electric power by a method wherein an ice cold heat accumulating tank is provided in the underfloor of a shop and an open showcase is provided on the floor of the shop while a space in the upper part of the ice cold heat accumulating tank is communicated with an air duct through a cold air suction means and a cold air discharging means. CONSTITUTION:A cold air suction means is constituted of a suction duct 20 and a fan 22 while a cold air discharging means is constituted of a discharging duct 21 and another fan 23. An ice cold heat accumulating tank 5 for cooling the inside of a shop, which is cooled by a refrigerating machine 7, is provided in the underfloor of a shop 1 while a freezing and refrigerating open showcase 4, provided with an air duct 18 for forming an air curtain for cooling the inside of the showcase by a box body 14 having an opening 13 and a partitioning plate 15 arranged at the inside of said box body, is provided at said opening and a space in the upper part of the ice cold heat accumulating tank is communicated with an air duct through a cold air suction means and a cold air discharging means. Accordingly, the cooling of the shop, effected by a cooler 12, and the cooling of the case 4 may be effected simultaneously by employing the ice cold heat accumulating tank. Cooling of water and the production as well as the reservation of ice as an heat accumulating medium can be effected in the ice cold heat accumulating tank by utilizing midnight electric power.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a store structure equipped with a frozen/refrigerated open showcase within the store, and particularly to a cooling method for the frozen/refrigerated open showcase.

[Conventional technology]

Conventionally, when a frozen/refrigerated open case is installed in a store, the cooling of the frozen/refrigerated open case is
This was done individually using a dedicated refrigerator installed inside or outside the main body. It was also cooled independently from the air conditioner in the store.

[Problem to be solved by the invention]

As mentioned above, with the conventional technology in which the frozen/refrigerated open showcase is cooled separately from the in-store air conditioner by a refrigerator installed inside the main body, both the frozen/refrigerated open showcase and the air conditioner are cooled. This poses the problem of high electricity costs, especially when a large number of frozen and refrigerated open showcases are installed in a store, and during peak power consumption in midsummer, a large amount of electricity is consumed. there were.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides an ice heat storage tank for cooling the store, which is cooled and heat-stored by a refrigerator, under the floor of the store, and also uses a housing having an opening and a temporary partition placed inside the housing. A freezing/refrigerating oven showcase is provided on the floor of the shop floor, and the opening is provided with an air passage for forming an air curtain for cooling the inside of the refrigerator, and the space above the ice heat storage tank and the air passage are connected to a cold air suction means; The store structure is equipped with a freezer and refrigerated oven showcase connected by a discharge means, and the cooling means is shared between the in-store air conditioner and the freezer and refrigerated oven showcase. The purpose is to reduce costs.

〔Example〕

Embodiments 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. On the floor 3 of the interior space 2 of the store 1, a freezer/refrigerated oven showcase 4 is installed, and below the floor 3, there is water 6 inside. storage, compressor 7A, and condenser 7B.

An ice heat storage tank 5 is provided in which ice chips 8 as a heat storage medium are purified and stored by a refrigerator 7 having a condensing fan 7C1 and an evaporation pipe 7D, and used for cooling the store l. The ice heat storage tank 5 has an outer wall 9 made of concrete and an inner wall 1 made of a heat insulating material.
0 and is thermally isolated from the space 2 of the store 1. Furthermore, the ice heat storage tank 5 communicates with the heat exchanger 12A of the air conditioner 12 through a pipe 11. In order to cool the space 2 inside the store 1, the pump 13 is operated and the water 6 cooled by the evaporation pipe 7D of the refrigerator 7 is heated.
, the purified ice pieces 8 are circulated in a circulation path consisting of piping 11 and a heat exchanger 12A, and the cold air after heat exchange in the heat exchanger 12A is discharged into the space 2 by the blower fan 12B as shown by the arrow. , circulate.

Freezer/refrigerated oven showcase 4 installed on floor 3
A housing 14 having an opening 13 on the front side and a partition plate 15 are provided between the housing 14 and the front side of the partition plate 15 is used as a product display room 17 with a product display space 116.
An air passage 18 for forming an air curtain in the front opening 13 is formed between the front opening 13 and the partition plate 15. 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 housing 14 of the inner air passage 18A and the space 51 above the ice heat storage tank 5 are communicated through an intake duct 20 and a discharge duct 21, respectively, which are provided with a heat insulating material 20A 220B around the periphery. Blow fans 22 and 23 are provided in the suction duct 20 and the discharge duct 21, respectively, and the suction duct 20 and the blow fan 22 constitute cold air suction means, and the discharge duct 21 and the blow fan 23 constitute cold air discharge means. Both the suction and discharge ducts are partitioned within the inner air passage 18A to prevent cold air from merging. Further, the suction duct 20 and the discharge duct 21 are divided by a baffle plate 27 provided in the space 51, and each have a lower space 51A1 and an upper space 51B.
It extends to

Cooling of the frozen/refrigerated oven showcase 4 in the store structure having the above configuration is as follows.

First, inside the outer air passage 18B, relatively warm air is circulated by the blower fan 28 as shown by the arrow, and the air outlet 24
An air curtain 26B that shields the front opening 3 is formed from B toward the suction port 25B.

Further, in the inner air passage 18A, a lower space 51 of the ice heat storage tank 5 is provided.
Remaining cold air is sucked in from A by the suction duct 20 and the blower fan 22, the cold air is circulated as shown by the arrow, and is blown out from the blow-off port 24A toward the suction port 25A to form an air curtain 26A in the front opening 13. Thereafter, it 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 suction duct 20 and the discharge duct 21 are each covered with Ur heat materials 2OA and 21A, the cold air inside both ducts cools the feet and prevents the customer from feeling uncomfortable. Further, a lower space 51 in which the suction duct 20 and the discharge duct 21 extend, respectively.
A. Since the upper space 51B is divided by the baffle plate 27, the cold air with an increased temperature discharged from the discharge duct 21 after circulating through the inner air passage 18A and forming the air curtain 26A flows into the suction duct 20. Since sufficiently cooled cold air is always sucked into the suction duct 20 without being sucked into the air, the cooling capacity of the freezer/refrigerated oven showcase 4 does not decrease.

In this embodiment, only the cold air remaining in the space 51 of the ice heat storage tank 5 is used as the cooling means for the frozen/refrigerated open showcase 4. At the same time, an evaporator may be arranged in the inner air passage 18A, and the cold air in the ice heat storage tank 5 and the cold air from the evaporator may be used for constant cooling, or normally the blower fans 22 and 23 are stopped to prevent evaporation. If you want to increase the cooling capacity by cooling only with the container, operate the blower fans 22 and 23.
The cold air in the ice heat storage tank 5 may also be used for cooling.

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, for example, is input to the control circuit 31. A signal output based on this temperature information causes the damper opening/closing means 32 to open the damper 29.
The amount of cold air sucked into the suction duct 20 may be controlled by opening and closing, or by making the opening and closing angle variable, thereby performing cooling according to the temperature of the product display room 17.

Furthermore, even if the operation, stopping, rotation speed, etc. of the blower fans 22 and 23 are controlled based on temperature information from the temperature sensor 30 without providing the damper 29, cooling can be performed according to the temperature of the product display room 17. .

Further, although this embodiment describes a store structure equipped with a front-opening freezer/refrigerating oven showcase, the present invention can also be applied to a case where a top-opening freezer/refrigerating oven showcase is installed in the store. Of course.

〔Effect of the invention〕

As explained above, the present invention provides an ice heat storage tank for cooling and storing heat in a store under the floor of the store, which is cooled and stores heat by a refrigerator, and also includes a housing having an opening and a partition plate placed inside the housing. A freezing/refrigerating open showcase is provided on the store floor, the opening of which is provided with an air passage for forming an air curtain for cooling the inside of the refrigerator, and the space above the ice heat storage tank and the air passage are connected to cold air intake means. This is a store structure equipped with an open showcase for freezing and refrigerating storage, which is characterized by communicating with each other through a discharge means. Since the open showcases can be cooled at the same time, the freezer/refrigerated oven showcase installed inside the store can be installed inside the main unit, or can be cooled individually by a dedicated refrigerator installed separately outside the main unit. Compared to cooling, power consumption is reduced and power costs are reduced.

In particular, if late-night electricity, which has low electricity costs, is used to cool water in an ice heat storage tank and to purify and store ice as a heat storage medium, power costs can be further reduced.

In addition, the cold air in the ice storage tank is humidified by water and ice chips, and this is used for cooling.
It also has the effect of humidifying the interior of the case product display room.

[Brief explanation of drawings]

1 to 3 illustrate embodiments of the invention. Fig. 1 is an overall system diagram of a store structure in which a freezer/refrigerated oven showcase according to the present invention is installed, Fig. 2 is a cross-sectional view of a main part of the system according to the present invention, and Fig. 3 is another embodiment of the suction duct section. FIG. ...Store 3...Floor...Freezer/refrigerated open showcase...Ice heat storage tank 6...Water 7...Freezer...Ice pieces 12
... Air conditioner 14 ... Housing 5 ... Partition plate 1
8A...Inner air passage 8B...Outer air passage 20...
Suction duct...Discharge duct 22.23...Blower fan 7...Panful temporary 51...Space LA...
Lower space 51B... Upper space Figure 1

Claims (1)

[Claims] An ice heat storage tank for cooling and storing heat in the store is installed under the floor of the store, and an air curtain is installed in the opening to cool the inside of the store, using a housing with an opening and a partition plate placed inside the housing. A frozen/refrigerated open showcase provided with an air passage for forming a cold air storage tank is provided on the store floor, and the space above the ice heat storage tank and the air passage are communicated by cold air intake means and discharge means. The store structure is equipped with open showcases for frozen and refrigerated storage.