JPS5933972Y2 - Frozen open showcase - Google Patents

Description

[Detailed description of the invention] The invention consists of providing an inner box with an open top at a predetermined distance within an outer box made of a heat insulator with an open top, and a blower and a refrigerant evaporator between these. The present invention relates to a refrigerated open showcase in which the opening is covered with a cold air curtain to form a cold air circulation passage to cool the inside.

Generally, this type of showcase includes an evaporator, ventilation wall,
Furthermore, since frost builds up on the inner walls of the inner box, it is necessary to defrost them regularly.Defrosting the evaporator and ventilation duct walls can be done by circulating hot air using a heater installed in the ventilation ducts or by blowing hot air into the evaporator. This is done by supplying gas, but defrosting the inner walls of the inner box is difficult because of the items inside.

However, since the inside of the inner box allows customers to freely take items in and out, it is easily noticeable, and the accumulation of frost on the entire inner wall of the inner box is not aesthetically pleasing.

The present invention aims to make it possible to easily remove frost by detachably attaching a plate member to the upper part of the inner wall of the inner box, but generally the opening for loading and unloading items is covered with a cold air curtain. In the case of a display case, it is difficult to install the plate member because a cold air rectification guide plate is provided at the air curtain outlet using the upper edge of the inner box.

Therefore, in the present invention, the frost removal plate member and the rectifying guide plate are integrated and can be detachably attached to the upper edge of the inner box.

Examples of the present invention will be described below.

FIG. 1 is a vertical cross-sectional structural view of the present invention applied to a top-opening refrigerated open showcase, and FIG. 2 is a cross-sectional view thereof.

In the figure, an evaporator 2 that also serves as an inner box is provided within an outer box 1 made of a heat insulator at a predetermined distance from both sides and the bottom in the front and back direction.
A fin-type refrigerant evaporator 3 and a blower 4 are disposed between these, and a cold air circulation path is formed so that the upper opening is covered with a cold air curtain.

The inner box evaporator 2 is a pipe-on-sheet type evaporator in which an evaporation pipe is installed on the outer wall of a metal box, and the aluminum is a roll-pond sheet type (this uses two metal plates such as aluminum as refrigerant). A panel in which a refrigerant circuit integrated with a metal plate is formed by crimping by rolling with an anti-adhesive agent interposed in the portion that is to become the flow path, and then expanding the non-adhesive portion into a tubular shape with pressurized fluid. This evaporator and the refrigeration cycle of the evaporator 3 are constructed independently.

Therefore, the inside of the case is cooled by the forced circulation of cold air cooled by the evaporator 3 and by the natural convection in the inner box evaporator 2.

FIG. 3 is a sectional view of a main part of the present invention, showing part A in FIG. 1, that is, the vicinity of the air curtain outlet.

Several rectifying guide plates 6 are attached to the air curtain outlet by mounting fittings 5 provided at intervals on the inner wall of the outer box 1 so as to span the entire width of the air curtain outlet.

Reference numeral 7 designates a frost removal plate for easily removing frost on the upper part of the inner wall of the inner box, and includes a rectifying guide plate 71 that serves as a rectifying guide at the innermost side of the air curtain outlet, and an evaporator 2 that also serves as the inner box. A plate member 72 along the upper part of the inner wall of the inner box is integrated with a screw or the like, and has a groove 73 that fits into the upper edge of the inner box-cum-evaporator 2 so that it can be attached to and detached from the upper edge of the inner box.

Of course, these can also be obtained by integral molding from the beginning.

The rectifying guide plate 11 adjusts the flow of the air curtain to minimize leakage of cold air to the outside of the case from the air curtain suction port 1, and the plate member 72 removes frost when frost accumulates thereon. The plate 7 can be easily removed by removing the plate 7, so that the upper part of the inner wall of the inner box is always maintained in an aesthetically pleasing state free from frost.

Here, when attaching and detaching the frost removal plate T, the rectifying guide plate 7
1 can be used as a handle.

In addition, since there is no need for rectification guidance in areas other than the air curtain outlet side, a frost removal plate made of a plate member is removably provided on the upper part of the inner wall of the inner box-cum-evaporator 2.

As explained above, according to the present invention, the frost removal plate, which also serves as a rectification guide for the air curtain, can be attached and detached using the upper edge of the inner box. Frost can be easily removed.

It goes without saying that the present invention can also be applied to the case where the inner box/evaporator 2 is a simple plate member.

[Brief explanation of drawings]

1 and 2 are longitudinal and transverse sectional views of an embodiment of the present invention, and FIG. 3 is a sectional view of essential parts of the present invention. In the figure, 1 is an outer box with a heat insulator, 2 is an evaporator that also serves as an inner box, and 3
is a fin-type evaporator, 4 is a blower, 5 is a mounting whole milk 6 is a rectifying guide plate, and T is a frost removal plate.

Claims (1)

[Scope of utility model registration request] In an open showcase that cools the interior by covering the opening for loading and unloading items with a cold air curtain,
A refrigeration opener characterized in that a frost removal plate is removably provided on the upper edge of the inner box on the side of the air curtain outlet, along the upper inner wall of the inner box and having a rectification guide plate for the air curtain. Showcase.