Title:
REMOVAL OF AN ACCUMULATED FROZEN SUBSTANCE FROM A COOLING UNIT
Document Type and Number:
WIPO Patent Application WO/2011/041780
Kind Code:
A3
Abstract:
An embodiment of a probe includes a sensor and a support. The sensor is operable to provide an indication of a thickness of a frozen substance that has accumulated between the sensor and a cooling fin of a cooling unit, and the support is operable to hold the sensor spaced apart from the cooling fin. For example, a defrost controller may use an embodiment of such a probe to monitor an amount of frost build up on the fin or fins of a cooling unit (e.g., a refrigeration or freezer unit) so that the controller may initiate a defrost cycle only when warranted. Such a probe may be more reliable than other defrost detection techniques, and such a defrost controller may increase the cooling and energy efficiencies of a cooling unit as compared to a cooling unit having a conventional defrost controller.
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Inventors:
GHAN MICHAEL A (US)
CONANT JAMES R (US)
CONANT JAMES R (US)
Application Number:
PCT/US2010/051317
Publication Date:
July 21, 2011
Filing Date:
October 04, 2010
Export Citation:
Assignee:
GHAN MICHAEL A (US)
CONANT JAMES R (US)
CONTROLS GROUP INC (US)
CONANT JAMES R (US)
CONTROLS GROUP INC (US)
International Classes:
F25D21/02; F25D21/08; G01B7/06
Foreign References:
| EP0563751A1 | 1993-10-06 | |||
| EP0608327B1 | 1997-07-30 | |||
| EP0278701A2 | 1988-08-17 | |||
| EP0092089A2 | 1983-10-26 |
Attorney, Agent or Firm:
SANTARELLI , Bryan, A . et al. (400 108th Ave NE Suite 70, Bellevue Washington, US)
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