Freshness-preserving electric pressure cooker and air extraction control method thereof

Abstract

The invention relates to the technical field of electric pressure cookers and discloses a freshness-preserving electric pressure cooker. The cooker comprises a cooker body, an outer pot, an inner pot, a sealing ring, an outer lid and an inner lid, wherein a circumferential groove which is in the circle form and opens upward is formed in the outer side of a pot opening of the inner pot, the sealing ring comprises an upper lip piece and a lower lip piece, the upper lip piece is attached to the inner side of the inner lid, and when the inner lid is closed up, the lower lip piece extends into the circumferential groove; the inner lid is connected with a flexible pipe, and one end of the flexible pipe is communicated to the inner side of the inner lid in a sealed mode; a minisize vacuum pump is arranged in the cooker body, and the other end of the flexible pipe is communicated to the minisize vacuum pump; a pressure detection device used for detecting the pressure of gas inside the inner pot is arranged on the inner lid. By means of the freshness-preserving electric pressure cooker, the problem that food left in a cooker is short in freshness-preservation time is solved, the minisize vacuum pump is started, residual air in the cooker is extracted, the pressure in the cooker is lowered, so that the lower lip piece is closely attached to the inner side wall of the circumferential groove, air of the outside world cannot enter, the purpose of long-time freshness-preservation for residual food is achieved, the food does not need to be poured out additionally by a user for additional freshness preservation, and the cooker is greatly convenient for the user to use.

Description

technical field [0001] The invention relates to the technical field of electric pressure cookers, and more particularly relates to a fresh-keeping electric pressure cooker and a method for controlling air extraction thereof. Background technique [0002] The electric pressure cooker is heated by an electric heating plate, the heating method is efficient and energy-saving, and the operation is safe and reliable. From the market performance point of view, it has gradually replaced the traditional pressure cooker. Electric pressure cooker is an upgraded product of the optimized combination of traditional pressure cooker and electric rice cooker. It combines the advantages of pressure cooker and electric rice cooker. It uses electric energy for heating in a sealed state inside the pot. It is environmentally friendly, convenient and fast, and can satisfy many It can meet the cooking needs in various aspects, and realize automatic cooking in multiple modes through the intelligent...

AI Technical Summary

Problems solved by technology

[0003] With the enrichment of people's material conditions, sometimes users use electric pressure cookers to cook more food, and there are often some food left in the pot after eating. Throwing away these foods will feel a bit wasteful. If they are kept in the pot, due to the residual oxygen in the pot , and the pressure inside and outside the pot is basically balanced so that the sealing ring cannot be completely sealed, and the air can circulate freely. fresh preservation

Both methods of preservation require pouring out the food, and then pouring the food into the pot for reheating when eating again, especially cold storage requires more energy to reheat the food, which brings inconvenience to users

[0004] Need a kind of electric pressure cooker that can extract residual air in the pot for this reason, also will keep sealing state in the pot after extracting residual air, but do not have this kind of electric pressure cooker and control method in the prior art

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