JPS6375465A - Cold storage - Google Patents

Abstract

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

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a low-temperature refrigerator equipped with an inner box that also serves as a cooler.

(B) Conventional technology First of all, the first conventional technology, Japanese Utility Model Publication No. 37-26279 (70B18), describes a method to cover the opening and closing portions of the cooler (heat absorbing plate) in which frost adheres. A structure of a frost cleaning device for a refrigerator is shown in which a curtain made of a thin synthetic resin film is hung as a mounting point on the upper edge so that it can be rolled up freely.
Publication No. 19883 (70B18) discloses a structure of a low-temperature storage container in which a cooler is installed in the container, and the cooler is covered with a removable frost-adhesive plate made of iron plate.
Utility Model Publication No. 59-2490 (F2
5D21106) is equipped with an upper part K inside the opening of the inner box/cooler with cooling pipes arranged on the outer surface, and a defroster plate made of a thermally conductive material so as to be in close contact with the inner surface of the upper part of the inner box. In the showcase, this defroster plate is removably locked so that its upper part faces the insulating plate interposed between the inner box and the outer box, and the defrost plate extends from the top of the inner box to the lower part of the insulating plate. A structure of a showcase is shown, characterized in that it is formed of plates as shown in FIG.
It has a structure that allows you to easily remove frost that has adhered around the opening.

e→ Problem to be Solved by the Invention According to the first conventional technique, since the lower edge of the curtain is not fixed and is a free end, a gap is formed between it and the surface of the cooler. As the stored items are taken in and taken out of the cooler, the curtain swings, and cold air containing moisture enters between the cooler and the curtain through the gap, and as a result, the cold air contained in the incoming cold air enters between the cooler and the curtain. Moisture solidifies on the surface of the cooler, forming frost.As one hour passes, this frost grows and the curtain is further away from the surface of the cooler.In the end, the amount of frost on the surface of the cooler is greater than the amount of frost on the curtain It became necessary to remove it with a WK defrost spatula etc. that had adhered to the surface of the cooler.

In addition, in the second conventional technique, moisture contained in the cold air that has entered the space between the frost adhering plate and the cooler congeals on the surface of the cooler and the back surface of the frost adhering plate and becomes frost. As a result, the cooler and the frost-adhering plate are connected by frost, leading to a situation where the frost-adhering plate cannot be removed.

Furthermore, in the third conventional technique, the frost adhering to the defroster plate grows and freezes into ice blocks, which then displace the inner box and the defrost plate. When connected, the defrost plate cannot be removed, that is, the defrost plate and the j! - There was a problem that it could not be taken out of the warehouse.

2.) Means for Solving the Problems The present invention solves the above problems in one aspect. A coating α made of an anti-icing material is formed on at least the surface near the opening of the inner side of the opened inner box (6) which also serves as a cooler, and the frost (D) attached to the coating α is removed. To provide a low temperature storage (1) that is easy to use.

(e) According to the working example, the coating u of the anti-icing material prevents frost from forming on the inner box (
The contact angle with the inner box (6) is large (and the adhesion force of Shimotsuki is weak), and the polarity of the inner side surface of the inner box (6) is reduced.

(1) Examples The present invention will be explained in detail based on the drawings below. (1) shown in Figures 2 and 3 is a low-temperature refrigerator generally called a chest freezer. ), and a heat insulating door (3) that freely opens and closes the opening of the heat insulating wall, and the heat insulating wall (2) and the heat insulating door (3) ? They are connected by a hinge (4) K that can freely rotate in the vertical direction. The heat insulating wall (2) has an inner box (6) that doubles as a cooler with an open side and a cooler (5) on the outer surface, an outer box (sword), and both the inner and outer boxes (6) (power A resin breaker (
8), and an inner box (9) that also serves as the cooler, and is composed of a foamed heat insulating material (9) filled in the space between the two boxes (6 bars).
6) is used to cool down the QOI inside the refrigerator. Furthermore, Ql
) is a load line provided in the inner box (6).

As shown in FIG. 1 (121 is a commercially available defrost port S (product name) or other icing prevention material, -(8)
This is a coating that is formed by applying it to the inside surface of the refrigerator. The anti-icing material is a combination of organopolysiloxane as a pace polymer and a special organic/inorganic composite compound. On the other hand, since its structure has a hydrophilic portion within the hydrophobic IJx of the silicone resin, it exhibits a unique behavior in that it absorbs a certain amount of water from the coating surface. It also acts as a small comb that increases the contact angle between the ice and the object, serves as a bonding agent, and reduces the polarity of the object's surface.

FIG. 4 shows another embodiment of the present invention, in which a frosting member is detachably disposed opposite to the coating (*3 & above coating a2) and is made of a resin or metal plate. and a mounting piece (1) placed on the breaker (8) at its upper end.
41 and a coating of anti-icing material on the inside surface of the refrigerator.
9 is formed. The area of this frosting member (inside the refrigerator in one country) is smaller than the area of the coating Q2, that is, the lower end of the frosting member 0 is located above the lower end of the coating α2.

In the old case, it was frost that adhered to the inside surface of the refrigerator near the opening, that is, the coating (12), and this frost was included in the outside air that entered the refrigerator interior (IQ) from the top opening every time the insulation door (3) was opened. moisture (
It is formed when moisture (humidity) solidifies on the inside surface of the refrigerator, which is being cooled, and grows and freezes over time to form ice cubes.

According to the frosting structure, a coating of anti-icing material (one is frost (D)
In order to increase the contact angle between the frost and the inner box (6) to weaken the adhesion of the frost and reduce the polarity of the inside surface of the inner box (6), the amount of frost ")" When the amount is low, press the tip of the defrost spatula against the inside surface of the inner box (6) and move the defrost spatula upwards to remove the frost (D).
In addition, if the amount of frost [F] adheres is large and the frost [F] becomes an ice block, applying an impact or pressing force to the ice block from above will cause the inner box (6) to be damaged due to the weak adhesion of the ice block itself. The ice block will slip on the inside surface of the refrigerator and fall downward, making it easy to remove the ice block.

In addition, as shown in Fig. 4, the amount of frost that adheres to the frosting member (13) is larger than that of the inner box (6), and this frost [F] causes the inner box (6) and the frosting member (1'5 If these are connected, the frost [F] on the inner box (6) can be removed by moving the frosting member Q■ toward the center of the opening, or by moving the frosting member (19) downward. , it can be removed outside the refrigerator together with the frosting member Q31.In addition, since a coating of anti-icing material is also formed on the inside surface of the frosting member (13), this frosting member α■
The frost [F] attached to the surface can be easily removed as described above.

(G) Effects of the Invention According to the present invention described above, the coating of anti-icing material formed on the surface of the inner side of the inner box in the vicinity of the opening increases the contact angle between frost and the inner box. In order to reduce the adhesion of frost to the box (and to reduce the polarity of the inside surface of the inner box,
■The adhesion force of the ice itself is weak, so even if the frost becomes ice blocks, applying impact or pressure from above the ice blocks will cause the ice blocks to slip and be peeled off from the inner box. Defrosting can be done easily.

[Brief explanation of the drawing]

The drawings all show embodiments of the low-temperature refrigerator of the present invention; FIG. 1 is a longitudinal sectional view of the main part, FIG. 2 is a front view, FIG. 3 is a sectional view taken along line A-A in FIG. 2, and FIG. It is a longitudinal cross-sectional view of another Example corresponding to the figure. (6) Inner box, (Inner box) Coating of anti-icing material.

Claims (1)

[Claims] 1. A low-temperature refrigerator in which a coating made of an anti-icing material is formed on at least the surface near the opening of the inner side of the inner box that doubles as a cooler and has one side open.