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US 7,875,833 B2Granted
Coffee roaster and controlling method of same
OwnerEugene Songinventor
Life of this patent
Estimating the term…
Abstract
Contemplated fully automated coffee roaster have significantly reduced energy demands, use electrical heat as a heat source in a temperature-only driven program mode, and eliminate smoke and smell within the roaster. Most preferably, contemplated fully automated roasters will consume only about 10 percent of the energy as compared to known devices on a per kilogram basis of beans and require no operator experience.
Claims21
A coffee roaster comprising:
- a casing, and a rotatable drum disposed within the casing and configured to allow roasting of coffee beans;
- a drum shield having a first surface and a second surface that is opposite the first surface, wherein the first surface is configured to at least partially surround an outer surface of the rotatable drum;
- a halogen lamp heater at least partially disposed within in the rotatable drum and configured to allow heating of the rotatable drum and coffee beans, an open air coil heater coupled to the second surface the drum shield, and a ceramic heater and a sheath heater, both coupled to another portion of the drum shield;
- a first sensor at least partially disposed within the rotatable drum and configured to allow measurement of a temperature of the beans;
- a second sensor coupled to the drum and configured to allow measurement of an inner drum temperature of the rotatable drum;
- a memory element configured to store data values of temperatures of the beans and the rotating drum;
- and
- a control unit configured and programmed to automatically adjust the inner drum temperature via control of at least one of the halogen lamp heater, the open air coil heater, the ceramic heater, and the sheath heater when the temperature of the beans and the rotating drum arrive at the data values.
5 more elements
The coffee roaster according to 17, wherein a mesh-shaped filter is detachably disposed at one side of the cooling table assembly to prevent the peels and scraps from being discharged to the outside.
Dependencies are inferred from the claim text.