JPS6222066B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigeration system having an inner box that also serves as a cooler, and more particularly to a refrigeration system that can easily remove frost adhering to the inner wall surface of the inner box.

In refrigeration equipment that has an inner box for product production and storage that also serves as a cooler, such as an ice cream maker or a show case, if it is operated for a long time, a large amount of frost will adhere to the upper edge of the inner wall of the inner box, reducing the cooling capacity. As the market price gradually declines, the space available for manufacturing and storing products also becomes smaller.

Therefore, as shown in FIG. 1, a frost adhesion plate 12 made of a thermally conductive material is hung on the upper edge 11a of the inner wall surface of the inner box 11, where the amount of frost adhering is the largest. The bottom part 11b of the inner box is fixed by the plate 13.
A refrigeration device has been developed that can easily remove frost F adhering to the inner wall surface of an inner box that also serves as a cooler by suspending the refrigeration device toward the inner box.

However, in the refrigeration system having the frost adhering plate 12 shown in FIG. 1, the adhering frost F is visible from the outside,
It has a poor appearance and reduces the display effect of the product.

The present invention has been made in view of these points, and by attaching a cover that covers the surface of the inner box of the frost adhesion plate facing the inside of the refrigerator at a predetermined distance from this surface, it is possible to prevent the adhesion of frost. To provide a refrigeration device that is not noticeable from the outside, has a pleasant appearance, and is easy to defrost.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a partial sectional view showing an embodiment of the refrigeration apparatus according to the present invention. In the figure, reference numeral 22 denotes a frost adhering plate to which frost adheres, and is made of a thermally conductive material. A hanging plate 23 is coupled to the upper part of the frost adhesion plate 22, and the hanging plate 23 is hooked and engaged with a protrusion 15 formed on the upper end 11a of the inner wall surface of the inner box, for example, as shown in the figure. , frost adhesion plate 2
2 is suspended toward the inner box bottom 11b. The hanging plate 23 is made of a non-thermally conductive material and has a mounting portion 23a to which the frost adhesion plate 22 is connected, and a cover 24. This cover 24 is provided at a predetermined distance from the surface of the frost adhesion board 22 facing toward the inside of the inner box so as to cover the frost adhesion board. The distance between this cover 24 and the frost adhesion plate 22 is
If it is too small, the frost will quickly reach the cover 24, and if it is too large, the amount of frost will increase and the cooling capacity will decrease, so it is usually desirable that it be about 10 to 30 mm. Further, the cover 24 is provided with a large number of ventilation holes 25 for passing cold air. The ventilation hole 25 may be a circular hole, a rectangle, or an elongated slit.

FIG. 3 is a partial sectional view showing another embodiment of the refrigeration system according to the present invention. In this example,
A stepped portion 11d protruding toward the inside of the chamber is provided on the inner wall surface of the inner box. This stepped portion 11d is provided near the lower end of the cover 24 to a position that slightly protrudes toward the inside of the refrigerator from the inside side surface 24a of the cover 24.

By providing such a stepped portion 11d,
The cover 24 protrudes from the upper part of the inside of the inner box 11, which prevents it from getting caught when loading and unloading products, making it easier to handle the refrigeration device, and
It also looks good in appearance.

FIGS. 4 to 6 are cross-sectional views showing other examples of coupling the frost adhesion plate and the hanging plate according to the present invention.

In FIG. 4, a hook-shaped frost adhering plate mounting portion 43a is provided on the hanging plate 43, and a hook-shaped portion 42 that engages with this is provided.
A frost adhesion plate 42 having a diameter is suspended. In addition, in FIG. 5, a C-shaped fitting groove 53 is provided on the hanging plate 53.
A frost adhering plate attachment part 53a having a diameter b is provided, and a fitting part 52a provided at the upper end of the frost adhering plate 52 is pushed into the fitting part 53a, and the frost adhering plate 52 is suspended. In this way, frost adhering plates 42, 52
By removably connecting these to the hanging plates 43, 53, it becomes easy to remove frost attached to the frost adhering plates.

In FIG. 6, the frost adhesion plate 62 and the hanging plate 63 are integrally formed of the same material. Hanging board 63
is made of a non-thermally conductive material such as plastic, a coating film 64 of a thermally conductive material is formed on the surface of the frost adhering plate 62 to facilitate the adhesion of frost to the frost adhering plate 62. I have to. This coating film 64 may be formed by pasting aluminum foil or by vapor-depositing aluminum.

When the refrigeration system according to the present invention having such a configuration is operated for a long time, frost F adheres to the frost adhering plate 22, as shown in FIG. 2 or 3. In this case, the frost adhering plate 22 is made of a thermally conductive material and is closer to the inner wall surface of the inner box, so it gets colder more easily than the cover 24, and the frost F does not adhere to the cover 24 but to the frost adhering plate 22. In addition, since the cover 24 is provided with a ventilation hole 25, the cold air flows through the ventilation hole 25.
5 and flows into the inside of the refrigerator without reducing the refrigerating capacity. In addition, the frosted state is not directly visible from the outside, giving it a good appearance. This particularly improves the product display effect. Furthermore, when the amount of frost increases and reaches the vicinity of the cover 24, the condition can be seen through the ventilation hole 25, and the time to remove the frost can be easily determined by visual inspection. That is, when frost begins to adhere to the frost adhesion plate and become visible through the ventilation holes, the hanging plate is removed from the upper end of the inner box by lifting it by hand, and the frost adhering to other areas is removed.

As described above, according to the present invention, the frost adhering to the upper edge of the inner wall surface of the inner box can be caused to adhere to the frost adhering plate, and the frost can be removed by removing the frost adhering plate.
Defrosting work is extremely easy and can be done in a short time. In addition, since the frost attached to the frost adhesion plate is not directly visible from the outside, it has a good appearance.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a conventional refrigeration system, FIG. 2 is a partial sectional view showing one embodiment of the refrigeration system according to the present invention, and FIG. 3 is a partial sectional view showing another embodiment of the refrigeration system according to the present invention. 4 to 6 are cross-sectional views showing an example of the combination of a frost adhering plate and a hanging plate according to the present invention. 11... Inner box, 22, 42, 52, 62... Frost attachment plate, 23, 43, 53, 63... Hanging plate, 2
4...cover, 25...ventilation hole.

Claims (1)

[Scope of Claims] 1. In a refrigeration system in which a frost adhesion plate is suspended from the upper part of the inner wall surface of an inner box that also serves as a cooler toward the bottom of the inner box, the frost adhesion plate has a part on the inner side of the inner box. A refrigeration device characterized in that a cover is attached at a predetermined distance from the facing surface so as to cover the facing surface. 2. The refrigeration apparatus according to claim 1, wherein the cover has a large number of ventilation holes.