Programmable fan control method and apparatus for use in a food oven
First Claim
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1. A cooking device for cooking food comprising:
- a cavity;
heating means disposed in the cavity;
temperature sensing means for determining the temperature in the cooking device;
a fan operable in at least a HI mode and a LO mode to move air in the cooking device; and
fan control means responsive to the temperature sensing means for determining in which mode to operate the fan;
wherein the fan control means operates the fan in LO mode by pulsing fan power on for a first predetermined amount of time every second predetermined amount of time to ensure continuous movement of the fan.
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Abstract
A cooking device for cooking food comprising a cavity, a heating element disposed in the cavity, a temperature sensor for determining the temperature in the cooking device and a fan operable in at least three modes, an OFF mode, a HI mode and a LO mode to move air in the cooking device. A fan control device is provided to operate the fan in LO mode by pulsing the fan on for a first predetermined mount of time every second predetermined amount of time to ensure continuous movement of the fan.
77 Citations
12 Claims
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1. A cooking device for cooking food comprising:
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a cavity; heating means disposed in the cavity; temperature sensing means for determining the temperature in the cooking device; a fan operable in at least a HI mode and a LO mode to move air in the cooking device; and fan control means responsive to the temperature sensing means for determining in which mode to operate the fan; wherein the fan control means operates the fan in LO mode by pulsing fan power on for a first predetermined amount of time every second predetermined amount of time to ensure continuous movement of the fan. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A cooking device for cooking food comprising:
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a cavity; heating means disposed in the cavity; temperature sensing means for determining the temperature in the cooking device; a fan operable in at least a HI mode and a LO mode to move air in the cooking device; and fan control means responsive to the temperature sensing means for determining in which mode to operate the fan; wherein the fan control means operates the fan in LO mode by pulsing the fan on for a first predetermined amount of time every second predetermined amount of time to ensure relatively continuous movement of the fan and further comprising cooking control means for controlling the heating means and wherein the fan moves air to cool the cooking control means. - View Dependent Claims (10)
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11. A method of operating a fan in a cooking device comprising the steps of:
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a) providing a fan in a cooking device; b) selecting a LO mode of operation for the fan; c) providing power to the fan on for a first predetermined period of time; d) removing power from the fan; e) waiting a second predetermined amount of time; and f) repeating steps c) and e) as long as the LO mode of fan operation is selected; wherein the second predetermined amount of time is selected to ensure that the fan rotates relatively continuously. - View Dependent Claims (12)
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Specification