Electric pressure cooker capable of controlling pressure precisely

Abstract

There is an accurate pressure-controlling electric rice cooker, which contains an inner pot inside pot body crust, and the inner pot is connected with electric plate, and there is a resilient seal ring between the inner pot and pot cover. Between the crust and the inner pot there is a middle pot; between the crust and the middle pot there is a heat-insulating layer. The electric rice cooker has a pressure switch, which contains an air duct or air channel connected with inner pot chamber. The other end of the air duct or air channel is communicated with a pressure membrane case, in which there are movable membranes that are joined with push rod. On the other side of the push rod there is a movable contact spring, which connects with an unmovable contact spring, and both the two contact springs couple with main controlling electric of electric rice cooker separately. This invention has simple and reasonable structure, its pressure controlling is accurate, safety degree is high, and after cooking it can exhaust quickly and safely, discharge pressure in blocked style, and its heat insulation effect is good, heat conductivity is high and is energy saving.

Description

technical field [0001] The invention relates to an electric pressure cooker, in particular to an electric pressure cooker with precise pressure control. Background technique [0002] Most of the existing electric pressure cookers are composed of parts such as pot lid, inner pot, electric heating plate, spring, medium pot, micro switch and chassis. The micro switch that controls the operation of the electric pressure cooker is corresponding; during the working process, when the pressure inside the sealed inner pot rises, because the pot cover is relatively static, the pressure pushes the inner pot and the electric heating plate, and the spring moves downward, thereby pushing the micro switch Switch to disconnect power. When the pressure drops, the spring resets automatically, pushes the electric heating plate and the inner pot to move upwards, resets the micro switch, and turns on the power to start working. Due to the change of the working pressure of the electric pressure...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the electric pressure cooker of the existing structure has the following very dangerous safety defects in use: 1. When the electric pressure cooker is working, the temperature of the lid is very high, which is very easy to burn people; Finally, you have to wait for a long time for cooling before opening the lid, which is very inconvenient; if you quickly deflate, the overflowing liquid will splash everywhere, and the high temperature and high pressure gas at 110 ° C is easy to spray on the human body, causing accidents ; 3. Especially when the working pressure of the electric pressure cooker is too high, the pressure relief device of the product will make the steam and water foam with a temperature of 130 ℃ and a pressure of 2 to 3 kg quickly spray to the surrounding area, scalding the surrounding operation and Bystanders; 4. Moreover, the existing electric pressure cooker has many parts, complex structure, poor working reliability, high requirements for manufacturing process, relatively high production cost, and poor product stability

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