JPS60178275A - Multistage type refrigerated open counter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field to which the Invention Pertains] This invention relates to a multi-stage refrigerator which is provided with an opening for taking out products on the front side, and in which a cold air curtain is blown out and formed in the opening to cool the inside of a display room. E [Prior art and its problems] As this type of refrigerated open showcase, the one shown in FIG. 1 is known. In FIG. 1, a main body case 1 having a front opening 1a consists of an outer box 2 made of a heat insulating material and an inner box 8 arranged with an appropriate gap between the outer box 2 and the outer box 2. The inside of the inner box 8 is partitioned into multiple stages f by shelf boards 4, and forms a row chamber 5 whose lower part bulges forward in order to enhance the display effect of the products on the lowest stage.

A cold air circulation path 6 is formed between the outer box 2 and the inner box 8, and both ends of the path face the opening 1a and open above and below the opening 1a, respectively, and are connected to a Suita exit 6a with a flow regulator 7, and a Suita exit 68. It forms a suction port 6b located slightly forward. Also, inside the cold air circulation path 6, there is a fan -8,
A fan panel 9 and a cooler 10 are provided to partition the air into the suction and discharge sides of the fan 8.

In the above-mentioned refrigerated open showcase, indoor air is sucked in from the suction port 6b by the fan 8, and the indoor air is cooled by the cooler 9 and blown out from the Suita exit 6a, and the display room 5 is filled in the opening 1a. A cold air curtain 11 is formed to block the inside from outside air, and the inside of the display room 5 is cooled. Since the air curtain 11 has the suction port 6b located in front of the Suita port 6a, the air curtain 11 is formed into a dogleg shape by bending the cold air blown out from the port 6a as shown in the figure.

By the way, in conventional refrigerated oven showcases, when the cold air blown out from the air outlet 6a is bent forward midway, the flow of cold air is disturbed, so some of the cooled air blows out of the air inlet 6b as shown by arrow B. front of main body case 1 without being recovered.
Flow down. At the same time, part of the outside air is engulfed by cold air as shown by arrow C and enters into the display room 5. The outside air raises the temperature inside the display room, reducing the cooling characteristics of the refrigerated open cooler case, and the cold air flowing forward stays near the floor, forming a cold aisle, causing discomfort to customers. There was a drawback to giving.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-stage refrigerated open shelf case that prevents deterioration of cooling characteristics and eliminates the formation of cold aisles.

[Key points of the invention]

This invention focuses on the fact that when the lower part of the display room is made negative pressure, the bending of the cold air curtain in the middle is suppressed.
(So that the cold air from the lower part of the display room is drawn into the cold air circulation path)
This prevents the cold air forming the cold air curtain from being disturbed and from flowing forward from the main body case.

[Embodiments of the invention]

In the drawings of the embodiment, parts common or identical to those in FIG. 1 are indicated by the same reference numerals.

16 is a cooler 10
There is a partition wall 17 provided at the rear of the lower part of the inner box 8, which also serves as a side plate for closing the side surface of the inner box 8. This ventilation passage 1
6 is a fan 8 f2 whose upper end is closed above the cold air hole 15 and whose lower end is in the cold air circulation path 6. Therefore, the cold air in the display room 5 is sucked from the cold air hole 15 into the ventilation path 16 as shown by arrow E. The cold air is sucked in from the suction port 61), passes through the cooler 10, and circulates through the cold air circulation path 6 as shown by arrow A. The cold air sucked out from the opening 1ai and forming the cold air curtain 11 is bent largely forward as the cold air in the display room 5 flows out from the cold air hole 15 and the lower part of the room becomes negative pressure. All but a part of the liquid flowing into the display room 5 is sucked into the suction port 6b and collected into the cold air circulation path 6. In this way, since the cold air forming the cold air curtain 11 is not disturbed on the way, outside air does not enter into the display room 5, and high cooling characteristics can be obtained.

Cold aisles do not form because the water does not deviate and flow downward.

In the above-mentioned embodiment, a single layer of cold air curtain 11 is formed in the opening 1a, but the present invention is a multi-layer refrigerated open showcase in which a plurality of layers of air curtain are formed in the opening. It can also be applied to descendants and the same effect can be obtained.

〔Effect of the invention〕

According to this invention, a cold air hole is provided in the back wall of the lower part of the inner box, and a ventilation path is provided that communicates this cold air hole with the fan suction side of the cold air circulation path, so that the cold air in the lower part of the display room is drawn from the cold air hole. Since the air is drawn into the circulation path, the cold air curtain reliably prevents outside air from entering, improving cooling properties, and also prevents the cold air flowing through the opening from flowing down to the front of the refrigerated oven showcase, creating a cold aisle. Things will go away.

[Brief explanation of the drawing]

FIG. 1 shows a conventional multi-stage refrigerated open display case. ■...Main case, 2...Outer box, 3...Inner box, 8
a...Back wall, 6...Display room, 6...Cold air circulation path,
8...Fan, 10...Cooler, 15...Cold air hole, 16...Ventilation path. Figure 1

Claims (1)

[Claims] 1) A cold air circulation path is formed between the outer box of the main case, which has an opening on the front, and the inner box, which serves as a display room.
In a multi-stage refrigerated open syszy case in which indoor air circulated through a cooler by a fan disposed in the cold air circulation path forms a cold air curtain at the opening and cools the inside of the display room, A cold air hole is provided in the lower back wall of the inner box, and
A multi-shaped refrigerated open showcase, characterized in that a ventilation path is provided that communicates the cold air hole with the fan suction side of the cold air circulation path.