Refrigerator vegetable room with variable pressure

摘要

The present disclosure relates to pressure control in a vegetable room of a refrigerator, and particularly, to a vegetable room of a refrigerator in which pressure is controlled according to vegetable, fruit, and mixture modes. More particularly, the present disclosure relates to a vegetable room of a refrigerator in which different pressures are applied according to vegetable, fruit, and mixture modes such that each pressure corresponds to storage conditions of storage items such as vegetable and fruit stored in an airtight state therein, whereby each storage item is maintained with optimal freshness. The vegetable room for keeping vegetables in storage in a refrigerator, includes: a storage chamber configured to keep food items in storage therein; a controller configured to adjust pressure within the storage chamber; and a vacuum pump configured to draw in air within the airtight storage chamber, wherein the controller may selectively adjust pressure according to a storage item kept in storage within the storage chamber, whereby the vegetable room of the refrigerator may have a plurality of operation modes.

主权项

1. A vegetable room for keeping foods in storage in a refrigerator, the vegetable room comprising:
a vegetable box configured to be fixed, the vegetable box having an accommodation space with a front side opened; a drawer configured to be moved, such that the drawer can be pushed into and pulled out of the accommodation space, the drawer having a storage chamber to store the foods therein; a controller configured to adjust a pressure within the storage chamber according to the foods stored in the storage chamber; and a vacuum pump to draw air within the storage chamber to thereby adjust the pressure within the storage chamber, wherein the pressure within the storage chamber is selectively controlled according to one mode of a fruit mode, a vegetable mode and a mixture mode, the pressure within the storage chamber is ranged from 0.93 atm close to 1.0 atm according to the fruit mode such that the pressure is optimized according to a rate of respiration of fruits, when fruits are stored in the storage chamber, the pressure within the storage chamber is ranged from 0.87 atm close to 0.93 atm according to the mixture mode such that the pressure is optimized according to a medium rate of respiration of fruits and vegetables, when fruits and vegetables are stored in the storage chamber, and the pressure within the storage chamber is ranged from 0.80 atm close to 0.87 atm according to the vegetable mode such that the pressure is optimized according to a rate of respiration of vegetables, when vegetables are stored in the storage chamber, wherein each pressure with respect to the vegetable mode, the fruit mode, and the mixture mode is a pre-set pressure required for maintaining optimal freshness of the foods, the pre-set pressure is derived from degrees (Δ%) of dryness of foods, an equation of deriving the pre-set pressure is as follows:Degrees⁢⁢(Δ⁢⁢%)⁢⁢of⁢⁢Dryness=(Weight⁢⁢of⁢⁢initial⁢⁢sample)-(Weight⁢⁢of⁢⁢sample⁢⁢after⁢⁢predetermined⁢⁢period⁢⁢of⁢⁢time)Weight⁢⁢of⁢⁢initial⁢⁢sample×100,and
a case in which the degrees (Δ%) of dryness is the lowest is set as the pre-set pressure.