Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1987-02-11
1989-03-14
Scott, Samuel
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219364, 219413, 126 21A, 165 17, 165 481, 165 61, 165 64, H05B 102, F25B 2900
Patent
active
048126225
ABSTRACT:
A defrosting apparatus including a housing defining a space for accommodating therein articles to be defrosted, a heater for heating the air within the housing, and an air circulation fan for circulating the heated air so that it flows through the space. The apparatus further includes a first temperature sensor disposed on the air outlet side of the circulation fan for sensing the temperature of the outlet air flowing out from the circulation fan to produce a first detection signal, a second temperature sensor disposed at the air inlet side of the circulation fan for detecting the temperature of the air flowing into the circulation fan to produce a second detection signal and a controller coupled to the first and second sensors for receiving the first and second detection signals, respectively, to thereby control the operation of the defrosting apparatus. The controller includes a first comparator for comparing the temperature represented by the second detection signal with a defrosting start temperature to energize the heater when the former is lower than the latter, a second comparator for comparing the first detection signal with a reference signal to selectively deenergize or energize the heater on the basis of the reference signal, and a third comparator for comparing the temperature represented by the second detection signal with a defrosting end temperature to complete the defrosting operation when the former is higher than the latter.
REFERENCES:
patent: 3261394 (1966-07-01), Foster et al.
patent: 3368062 (1968-02-01), Gramenius et al.
patent: 3548153 (1970-12-01), Kells
patent: 3692100 (1972-09-01), Gallagher, Jr.
patent: 3780794 (1973-12-01), Staub
patent: 3818977 (1974-06-01), Lohr
patent: 4117881 (1978-10-01), Williams et al.
patent: 4307286 (1981-12-01), Guibert
patent: 4509586 (1985-04-01), Watabe
Takeda Yukimasa
Wakatuki Yuji
Ford John K.
Hoshizaki Electric Co., Ltd.
Scott Samuel
LandOfFree
Apparatus for defrosting frozen articles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for defrosting frozen articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for defrosting frozen articles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-894910