JPS6227831Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of a refrigerating compartment for maintaining freshness that is divided into sections within the refrigerating compartment of a refrigerator.

In general, there are two types of food preservation in refrigerators: refrigeration and freezing, but apart from freezing, the other type of refrigeration has a storage capacity of only a few days, especially for preserving fish, shellfish, and meat. The reality is that it spoils within 2 to 3 days.

Therefore, in this proposal, instead of simply refrigeration, the oxygen concentration in the refrigerator chamber is diluted by the use of inert gas, thereby maintaining the freshness of the food over a long period of time.

The present invention will be explained below based on embodiments shown in the drawings.

A is a so-called two-door refrigerator in which a freezer compartment 1 is provided in the upper tier and a refrigerator compartment 2 is provided in the lower tier. 3 is a refrigerator compartment for maintaining freshness (hereinafter referred to as "freshness maintenance compartment") divided into sections at the upper right corner of the refrigerator compartment 2;
An extension space S is provided at the back of the freshness keeping chamber 3, and a flexible stretchable wall 4 made of a rubber plate folded several times is provided at the back of the freshness keeping chamber 3, and a flexible stretch wall 4 is provided at the front. An opening/closing door 5 is provided. The freshness preservation chamber 3 is configured to be sealed when the opening/closing door 5 is closed.
7 is an airtight gasket for sealing the door 5, and a stopper 7 is used to securely keep the door 5 in the closed state. Reference numeral 8 denotes an inert gas sealing port provided in the freshness maintaining chamber 3, and a cap 8' having a check valve structure is attached to the opening/closing door 5. In addition, what is indicated by 1' in the figure is the door of freezer compartment 1,
2' is a door of the refrigerator compartment 2, and 9 is a heat insulating material. Also the third
The figure is a cross-sectional view showing another example of the present invention.
The divided chamber on the front side is used as the freshness preservation chamber 3, and the divided chamber 10 on the back side is used as an expansion space for the flexible extensible wall 4. An air vent hole 11 communicating with the outside air is provided.

Note that F indicates food stored in the freshness maintaining chamber 3, and N indicates a gas cylinder containing compressed inert gas (nitrogen gas, carbon dioxide gas, etc.).

Therefore, after storing raw foods F such as fish, shellfish, meat, and vegetables in the freshness keeping chamber 3, the opening/closing door 5 is closed and sealed, and then a gas cylinder N is inserted into the inert gas filling inlet 8'. When the inert gas in the cylinder N is forced into the freshness keeping chamber 3 by pressing the nozzle, the internal pressure in the freshness keeping chamber 3 rises, and the flexible expandable wall 4 changes from the folded state. It will expand. Then, this flexible expandable wall 4 is in an expanded state in the expansion space S on the back side of the freshness keeping chamber 3, and as the internal volume of the freshness keeping chamber 3 is expanded, the oxygen concentration is diluted and the inert gas The internal pressure increases due to the inclusion of .

In this embodiment, the flexible extensible wall 4 is expanded from the folded state by injecting an inert gas, but on the contrary, the flexible extensible wall 4 is expanded by injecting an inert gas. It may be configured such that the internal volume of the freshness preservation chamber 3 is expanded by contracting it from the extended state.

Since the present invention is constructed as described above, food can be stored in an atmosphere with diluted oxygen concentration, and the progress of oxidation of food (particularly living things such as fish and shellfish and meat) can be extremely delayed. Also, since the steam pressure increases due to the increase in internal pressure, it is not only possible to prevent the progress of drying of vegetables, but these effects and the cooling effect work together to maintain the freshness of food for a long time. It has the effect of being able to be retained. Furthermore, after thawing frozen foods, extreme deterioration in freshness occurs, but if the freshness preservation chamber of this proposal is used as a thawing chamber, it is possible to maintain the freshness of frozen foods for a long period of time even after thawing. .

[Brief explanation of the drawing]

Fig. 1 is an overall front view showing the refrigerator according to the embodiment of the present invention, Fig. 2 is a sectional view taken along the line shown in Fig. 1, and Fig. 3 is a sectional view taken along the line shown in Fig.
The figure is a sectional view showing another example. A: Refrigerator, 2: Refrigerated room, 3: Refrigerated room (freshness preservation room), 4: Flexible telescopic wall, 5: Door, 8: Enclosure port, F: Food, N: Inert gas cylinder.

Claims (1)

[Scope of utility model registration request] Refrigerator A has a refrigerator compartment 3 inside the refrigerator compartment 2 to maintain freshness.
An extension space S is provided at the back of the refrigerator compartment 3, and a flexible stretchable wall 4 made by folding rubber plate material several times is installed in series at the rear of the refrigerator compartment 3. An opening/closing door 5 is provided in front of the refrigerator compartment 3 so that the refrigerator compartment 3 is sealed when the opening/closing door 5 is closed. Features a refrigerator compartment structure for preserving freshness.