Pressure cooker with sensor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsShigeki Ueda, Kaeko Nishimoto, Ichiro Hori, Hitoshi Kurita, Mitsuo Akiyoshi
Life of this patent
Estimating the term…
Abstract
A pressure cooker with a humidity sensor or gas sensor, wherein a micro-computer reliably detects the point at which the internal pressure of a pressure cavity reaches a prescribed value by using this sensor by detecting the point at which a pressure control valve begins to operate and begins to discharge a large quantity of excess vapor or gas etc. from the pressure cavity to the outside, with a result which is equivalent to that of a direct measurement of the internal pressure with a pressure sensor, thereby attaining an accurate measurement without bringing the humidity or gas sensor into contact with the pressure cavity.
Claims10
A pressure cooker with sensors comprising:
- a pressure cavity which accommodates and seals up food;
- a pressure control valve provided in a portion of this pressure cavity;
- a heating chamber which accommodates the pressure cavity;
- a heating device combined with said heating chamber, said heating device heating the pressure cavity;
- a micro-computer which controls an electric power supply to said heating device;
- a humidity sensor, or gas sensor, which detects excess vapor discharged from the pressure control valve;
- and
- a timer means which sets a heating time for the period after the prescribed pressure is reached within the pressure cavity,
- wherein said micro-computer starts said timer means by detecting only a prescribed amount of excess vapor or gas discharged from said pressure control valve using said humidity sensor or gas sensor.
A pressure cooker with sensors comprising:
- a pressure cavity which accommodates and seals up food;
- a pressure control valve provided in a portion of this pressure cavity;
- a heating chamber which accommodates the pressure cavity;
- a heating device combined with said heating chamber, said heating device heating the pressure cavity;
- a micro-computer which controls the electric power supply to this heating device;
- a humidity sensor, or gas sensor, which detects excess vapor discharged from the pressure control valve;
- and
- an input means for dictating the type of food,
- wherein said micro-computer detects only a prescribed amount of excess vapor or gas discharged from the pressure control valve using the humidity sensor or gas sensor, calculating the time required until that point, computes the time requires until the prescribed amount of excess vapor has been detected, and then computes the remaining electric power supply time for the heating device based upon this calculated time and the type of food dictated by the input means.
Dependencies are inferred from the claim text.