A heating apparatus for automatically distinguishing the condition of food to be reheated
US4874928A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1988 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Apr 29, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/6458
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating apparatus is provided with the gas sensor for detecting gas or steam generated from an object to be heated and a weight sensor for detecting the weight of the object to be heated. The signal level of the gas sensor indicates whether the change in the amount of the gas or the steam in the exhaust guide portion is a predetermined value of gas or steam generated from the object, to determine the kind and condition of the object to be heated. Also, change in the signal level of the gas sensor is compared to the predetermined value at a detection time period which is based on the weight of the food detected by the weight sensor, to decide whether to continue or stop heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.