Fresh Keeper

Abstract

A fresh keeper used in refrigerating apparatus comprises a lid (1), an outer drawer (2) and at least one inner drawer (3) which is contained in said outer drawer, a gap is formed between the outer drawer and the inner drawer such that said outer drawer (2), said inner drawer (3) and said lid (1) form a sealed space when they are in mounting state. The effect of heat preservation is improved due to the air insulating layer, thereby the temperature inside the fresh keeper is not easily influenced by the ambience and the temperature inside the fresh keeper is more stable. Because of the double-layer structure used in the invention, an air layer is formed. The pressure of the vapor in the air layer is much more than that of the inner drawer, thus it is difficult for the vapor in the inner drawer to diffuse into the air layer, and thereby the moisture in the inner drawer is ensured so that the humidity is kept to be a high value.

Description

TECHNICAL FIELD[0001]The invention relates to a fresh keeper. More particularly, the invention relates to a fresh keeper used in refrigerating apparatus.BACKGROUND ART[0002]The two most important factors affecting the shelf-life of refrigerated food are temperature and humidity. So far most of the attention has been aimed at controlling just the temperature of the refrigerators; there are not a method and a device keeping fresh by controlling the humidity.[0003]Several fresh keepers have been used in refrigerating apparatus. A kind of fresh keeper is widely used at present. This fresh keeper consists of a simple single-layer drawer which was not sealed well, thus the temperature in the drawer is not stable and water diffuses quickly while the temperature and the humidity of ambience and their variation have influence on those inside the drawer, thereby the food contained in the drawer is easy to perish or dehydrate.[0004]A kind of sealed box is also used to keep fresh. Some sealed m...

AI Technical Summary

Benefits of technology

[0022]The invention, as compared with the prior art has following advantages:

Problems solved by technology

So far most of the attention has been aimed at controlling just the temperature of the refrigerators; there are not a method and a device keeping fresh by controlling the humidity.

Some sealed material are used in the sealed box while the sealed box could not well prevent water from diffusing, because the vapor pressure of air in the box forces the humidity in the box to balance with that of ambience through a small aperture, therefore water would diffuse quickly and the temperature would not be stable if there is even a small aperture, even if the food is stored in a sealed box.

There is further a fresh keeper to adjust the humidity thereof by means of a mechanical adjusting structure, but the mechanical adjusting structure could not keep the humidity inside the box stable exactly.

The prior device keeping fresh above can not provide stable humidity and temperature which is useful to keep vegetable and fruits fresh.

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