VARIABLE LOW INTENSITY INFRARED HEATER
First Claim
1. An infrared heater comprising:
- a burner having an inlet for receiving air and gas and an exhaust for emitting exhaust gases generated by combustion of a Be of the air and the gas within the burner;
an elongated radiant heating tube having an inlet for receiving the exhaust gases emitted by the burner;
a gas flow control assembly for controlling the flow of gas to the burner; and
a blower receiving inlet air and directing the inlet air to the inlet of the burner wherein the blower comprises a two stage blower having a low speed for delivering a low air flow to the burner and a high speed for delivering a high air flow to the burner.
1 Assignment
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Accused Products
Abstract
A radiant heater including a burner having an inlet for receiving an air and gas mixture and an exhaust for emitting exhaust gases generated by combustion of the air and gas mixture within the burner, an elongated radiant heating tube having an inlet for receiving the exhaust gases emitted by the burner, a gas flow control assembly for controlling the flow of gas to the burner, and a blower for controlling the flow of air to the burner. The blower comprises a two-stage blower including a motor having a low winding corresponding to a low blower speed and a high winding corresponding to a high blower speed. The gas flow control assembly comprises a two-stage regulator or two stage two-stage valve having a low setting for delivering a low gas flow to the burner and a high setting for delivering a high gas flow to the burner.
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Citations
22 Claims
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1. An infrared heater comprising:
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a burner having an inlet for receiving air and gas and an exhaust for emitting exhaust gases generated by combustion of a Be of the air and the gas within the burner;
an elongated radiant heating tube having an inlet for receiving the exhaust gases emitted by the burner;
a gas flow control assembly for controlling the flow of gas to the burner; and
a blower receiving inlet air and directing the inlet air to the inlet of the burner wherein the blower comprises a two stage blower having a low speed for delivering a low air flow to the burner and a high speed for delivering a high air flow to the burner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An infrared heater comprising:
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a burner for receiving and combusting an air and gas mixture to generate exhaust gases;
a radiant heating tube receiving the exhaust gases from the burner and converting the exhaust gases into radiant beat;
a two stage gas flow control assembly operative to deliver gas to the burner at either a low level or a high level; and
a two sage blower operative to deliver air to the burner at either a low level or a high level. - View Dependent Claims (15, 16, 17)
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18. A method of heating a room with an infrared heater of the type including a burner having an inlet for receiving air and gas, and an exhaust for emitting exhaust gases generated by combustion within the burner, and an elongated radiant heating tube located in the room to be heated and having an inlet for receiving the exhaust gases emitted by the burner,
a two stage gas regulator having a low setting for delivering a low gas flow to the burner and a high setting for delivering a high gas flow to the burner; - and
a two stage blower having a low speed for delivering a low air flow to the inlet of the burner and a high speed for delivering a high air flow to the inlet of the burner wherein the method comprises the steps of;
(i) operating the blower at the low speed while operating the regulator at the low setting to heat the room; and
(ii) operating the blower at the high speed while operating the regulator at the high setting to heat the room. - View Dependent Claims (19, 20)
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21. A method of heating a room with an infrared heater of the type including a burner having an inlet for receiving an air and gas mixture and an exhaust for emitting exhaust gases generated by combustion within the burner, an elongated radiant heating tube having an inlet for receiving the exhaust gases emitted by the burner, a gas flow control assembly for controlling the flow of gas to the burner, and a two stage blower for controlling the flow of air to the burner, the method comprising the steps of:
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defining a temperature set point of the room;
defining a programmed temperature differential;
monitoring the temperature of the room;
igniting the burner when the room temperate is less than the temperature set point;
defining a temperature threshold as the temperature set point minus the temperature differential;
operating the blower at the high level when the room temperature is equal to or below the temperature threshold; and
operating the blower at the low level when the room temperature is greater than the temperature threshold and lower than the set point temperature. - View Dependent Claims (22)
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Specification