Stoves and furnaces – Liquid heater – Fluid fuel burner for other than top-accessible vessel
Patent
1985-08-08
1986-07-15
Green, Randall L.
Stoves and furnaces
Liquid heater
Fluid fuel burner for other than top-accessible vessel
126374, 99403, 210167, 210DIG8, 236 26A, F24H 100
Patent
active
045999902
ABSTRACT:
This invention relates to a deep fat fryer of the external heat exchanger, pumped-recirculation type, and more specifically, discloses a control system for automatically heating and recirculating the fat either continuously or intermittently as needed to accommodate one or both of two conditions existing in such a fryer. First, during continuous circulation and frying vapor lock may occur at the pump impeller, inhibiting recirculation. Automatic shifting to intermittent operation is made to occur until the vapor "burps" itself from the pump. Additionally, when starting a fryer and using solid shortening, the pump and burner are operated intermittently until such time as the pump and heat exchanger are sufficiently full of melted shortening to permit continuous circulation. Upon sensing that full condition and our associated pressure, the system shifts automatically to continuous recirculation.
REFERENCES:
patent: 3977390 (1976-08-01), Fogel et al.
patent: 4487691 (1984-12-01), Panora
Bangert Matthew D.
Fritzsche Donald E.
Panora Robert A.
Green Randall L.
Hobart Corporation
Thermo Electron Corporation
Weigl William
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