Indoor air quality improvement by re-evaporation control
AssigneeCarrier Corporation
InventorsMichael F. Taras, Alexander Lifson
Life of this patent
Estimating the term…
Abstract
Various control methods are disclosed for removing moisture from the external surfaces of an evaporator in a refrigerant system to avoid moisture entering a conditioned space. In one embodiment, the evaporator fan is driven in a reverse direction, and the air is guided to the outdoor environment. In other embodiments, a supplemental exhaust fan is utilized in conjunction with the evaporator fan. Also, a reheat circuit, hot gas bypass circuit, or specific features of a heat pump unit may be utilized to more efficiently perform the moisture removal.
Claims34
A refrigerant system comprising:
- a compressor for compressing refrigerant and delivering the refrigerant to a condenser, refrigerant passing from said condenser to an expansion device, and then to an evaporator;
- a fan for flowing air over the evaporator;
- and
- an air duct system for delivering air over the evaporator, and into a space to be conditioned;
- and
- a control being operable to selectively operate the refrigerant system to move air over the evaporator, and to deliver that air to an outside environment to remove moisture from the evaporator.
A method of operating a refrigerant system including the steps of:
- (1) providing a compressor for compressing refrigerant and delivering the refrigerant to a condenser, refrigerant passing from said condenser to an expansion device, and then to an evaporator;
- (2) providing a fan for flowing air over the evaporator;
- and
- (3) delivering air through an air duct system over the evaporator, and into a space to be conditioned;
- and
- (4) a control selectively operating the refrigerant system to move air over the evaporator, and to deliver that air to an outside environment to remove moisture from the evaporator.
Dependencies are inferred from the claim text.