JPS605348Y2 - open case - Google Patents

Description

[Detailed description of the invention] This invention relates to an open showcase equipped with a film that protects cold air curtains at night, etc., and its purpose is to:
To prevent a cold air curtain from being disturbed in the vicinity of a suction port, and to discharge dew adhering to both sides of a film together with dew from a cooler to prevent the front wall and floor of a case from becoming dirty.

Generally, in open showcases with an open front of the storage room, a cold air curtain is formed at the opening so that customers can easily take out products from the storage room, but the refrigeration load at the opening accounts for about 80% of the total load. In order to protect the cold air curtains, a winding, automatic return type film is attached to the outside of the cold air curtains to protect them when they are not in use, such as at night.

However, in conventional showcases of this type, the film locking device was locked to the upper front of the front wall of the main body, so dew adhering to the surface of the film would flow from the front wall to the floor surface, staining the front wall and floor surface. Another drawback is that the cold air curtain flowing along the inner surface of the film hits the top surface of the front wall, creating turbulence and causing frost formation near the suction port.

This proposal was made in view of the above-mentioned drawbacks, and an embodiment thereof will be explained below with reference to the drawings.
This is an open showcase whose main body is composed of a heat insulating wall 2 having a heat insulating wall 2, and a cold air passage 5 in which a cooler 7 and a blower 8 are installed by arranging a partition plate 4 at an appropriate distance from the inner wall of the heat insulating wall. , a storage chamber 6 having shelves 9 is formed, and an air outlet 10 and an inlet 11 are formed at the upper and lower ends of the opening, and the cold air that has been heat exchanged by the cooler 7 is forcedly circulated by the blower 8. A cold air curtain A is formed in the opening 3 to cool the storage room 6.

Reference numeral 12 denotes a drainage hole formed in the bottom wall 2a of the heat insulating wall, which is located on the windward side of the cooler 7 and the blower 8, that is, on the low-pressure side of the cold air passage 5, and is connected to a drainage pipe 13 for guiding dew to the outside, which will be described later. is connected.

Reference numeral 14 denotes a winding and automatic return type film provided on the outside of the upper part of the opening, and when necessary, the locking tool 15 is pulled downward, as shown in FIG. It is attached to the outside of the cold air curtain A by being engaged with a stopper 16 provided inside the front wall 2b of the wall.

As shown in FIG. 2, the locking tool is connected to a stopper 16 provided on the inside of the front wall 2b, and as shown in FIG. It may be locked through.

That is, the locking tool 15 may be located inside the front wall of the heat insulating wall 2, facing the suction port 11, and locked so as not to obstruct the suction of the cold air curtain A.

When the open showcase 1 is cooled with the film 14 attached to the outside of the cold air curtain A, the film 14 becomes the boundary between the cold air and the outside air, so the temperature of the surface of the film 14 exposed to the outside air is The temperature drops below the dew point, and a large amount of dew forms on the surface.

This dew flows from the lower end of the film 14 through the suction port 11 and the cold air passage 5 to the drain hole 12, and is removed to the outside from the drain pipe 13 together with the dew from the cooler 7.

According to this configuration, the dew that has adhered to the surface of the film 14 and has flowed down to the lower end is quickly dripped onto the low pressure side of the cold air passage 5 by the draining action of the cold air curtain A, and moreover, this dropped dew is In addition to being able to guide the dew to the drain hole 12 using the slope of the inner surface of the wall 2a, the falling speed of this dew can be increased by the return cold air from the suction port 11 to the cooler 7, so that the dew drops from the film 14. Processing can be carried out quickly by shortening the time that dew is exposed to the cold air.

Freezing of dew in the cold air passage 5 can be prevented, and the dew from the cooler 7 can be discharged to the outside from the drain hole 12.

In addition, since the drain hole 12 itself opens on the low pressure side of the cold air passage 5, it is not easily affected by the heat of the cooler 7, which is maintained at a low temperature. It can make dew less likely to freeze.

Furthermore, the lower end stopper 15 of the film 14 is attached to the cold air curtain A.
By locking the curtain so as to face the suction port 11 and positioning it closer to the storage room than the front wall 2a, the downstream flow of the cold air curtain A immediately before the suction port 11 can be improved, and the downstream flow of the cold air curtain A can be improved. Disturbance and frost formation on the upper part of the front wall 2a due to this disturbance can be prevented.

As described above, the present invention is an open space in which a cold air curtain is formed at the front opening of the storage room, and a winding automatic return type film provided outside the upper part of the opening is attached to the outside of the cold air curtain as necessary. In the showcase, a drainage hole is provided that opens on the low pressure side of the cold air passage upwind of the cooler and the blower, and the lower end of the film is provided adjacent to the inlet of the cold air curtain. By shortening the time that the dew dripping from the film is exposed to the cold air, it is possible to prevent the dew from freezing and to quickly process it.The dew can also be discharged to the outside along with the dew from the cooler, and furthermore, the dew can be discharged to the outside downstream of the cold air curtain. As a result, dew treatment can be carried out hygienically without staining the front wall surface and floor surface with dew or causing frost on the upper part of the front wall.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical sectional view of the open showcase of the present invention, FIG. 2 is a sectional perspective view of the same essential part, and FIG. 3 is an enlarged vertical sectional view of the essential part in another embodiment. 5...Cold air passage, 11...Suction port, 1
2... Drain hole, 14... Film, 1
5...Locking tool.

Claims (1)

[Scope of utility model registration request] In an open showcase, a cold air curtain is formed at the front opening of the storage room, and a winding automatic return type film provided outside the upper part of the opening is attached to the outside of the cold air curtain as necessary. An open showcase characterized in that a drainage hole is provided that opens on the low-pressure side of a cold air passage upwind of a blower, and the lower end of the film is provided adjacent to an inlet of a cold air curtain.