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US 2016/0258668 A1Published application
Defrost Control Using Fan Data
AssigneeLennox Industries Inc.
InventorsYi Qu, H. Gene Havard, Jon Douglas, Jeff Mangum
Life of this patent
Estimating the term…
Abstract
In various implementations, frost in a vapor compression system may be controlled. A property of a fan may be determined. A determination may be made whether a frost event and/or a nonfrost event has occurred based at least partially on the determined fan property.
Claims17
A method of distinguishing between a frost condition and a nonfrost condition in a vapor compression system, the method comprising:
- determining one or more system properties of the vapor compression system, the one or more system properties comprising at least inlet temperature and fan property;
- determining if an event has occurred based at least partially on at least the inlet temperature and the fan property;
- determining if the event is a frost condition or a nonfrost condition based at least in part upon the inlet temperature and the fan property, wherein if the fan property is greater than a predetermined value and the inlet temperature is above a predetermined temperature then a determination of a nonfrost condition is made, and if the fan property is greater than a predetermined value and the inlet temperature is below a predetermined temperature then a determination of a frost condition is made;
- and
- initiating a defrost cycle if the event is a frost condition.
2 more elements
A vapor compression system comprising:
- a fan;
- sensors that measures one or more system properties, the one or more system properties comprising at least inlet temperature and fan property;
- and
- a management module that determines if an event has occurred and whether the event is a frost condition or a nonfrost condition based at least in part upon the inlet temperature and the fan property, wherein if the management module determines that the fan property is greater than a predetermined value and the inlet temperature is above a predetermined temperature then a determination of a nonfrost condition is made, and if the management module determines that the fan property is greater than a predetermined value and the inlet temperature is below a predetermined temperature then a determination of a frost condition is made.
1 more element
Dependencies are inferred from the claim text.