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US 2017/0284698 A1Published application
Systems and methods to detect heater malfunction and prevent dry burning
AssigneesTrane International Inc., Trane Air Conditioning Systems (China) Co., Ltd.
InventorsNipeng CONG, Hua ZHAO, Ping YUAN
Life of this patent
Estimating the term…
Abstract
A heater, e.g. an anti-freezing heater, is disclosed. The heater can be configured to set off an alarm when a heating element is broken or malfunction. The heater can also be configured to connect the heating element to a relatively low voltage when the heating element may experience a dry burning condition.
Claims14
A heater comprising:
- a heating element;
- a power supply including a high voltage power and a low voltage power;
- and
- a voltage selector configured to select the high voltage power or the low voltage power to the heating element;
- wherein the voltage selector is configured to select the high voltage power or the low voltage power based on a temperature on the heating element.
2 more elements
A HVAC system, comprising:
- an evaporator;
- a heater configured to provide heat to the evaporator;
- wherein the heater includes:
- a heating element;
- a power supply including a high voltage power and a low voltage power;
- and
- a voltage selector configured to select the high voltage power or the low voltage power to the heating element;
- wherein the voltage selector is configured to select the high voltage power or the low voltage power based on a temperature on the heating element.
5 more elements
A method of providing heat to a component in a HVAC system, comprising:
- measuring a temperature of a heating element in the HVAC system;
- when the temperature of the heating element exceeds a threshold, connecting the heating element to a high voltage power;
- and
- when the temperature of the heating element is below a threshold, connecting the heating element to a low voltage power.
1 more element
Dependencies are inferred from the claim text.