Float valve motion detection device, pot cover assembly and pressure cooking appliance
US11707152B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 1, 2017 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Sep 17, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J27/56
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present disclosure provides a float valve motion detection device, a pot cover assembly and a pressure cooking appliance, the float valve motion detection device comprising: a float valve, a hollow inductance coil and a detection circuit. A valve core of the float valve is made of materials having permeability unequal to that of air. When the valve core is pushed by the pressure in a pot from a first position to a second position, the volume of the valve core in the hollow inductance coil changes, which changes the inductance of the hollow inductance coil. A detection circuit determines the position of the valve core by means of detecting the change in the inductance of the hollow inductance coil so as to determine whether it is safe to uncover at the current time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.