Title:
REFRIGERANT EVAPORATORS WITH PULSE-ELECTROTHERMAL DEFROSTING
Document Type and Number:
WIPO Patent Application WO/2010/054086
Kind Code:
A3
Abstract:
An pulse electro thermal defrost evaporator system has multiple refrigerant tubes formed from an electrically conductive metal and connected in parallel for refrigerant flow. These tubes are, however, connected electrically in series. A controller is capable of detecting ice accumulation and connecting the tubes to a source of electrical power for deicing when it is necessary to deice the tubes. Embodiments having a manifold having multiple conductive sections insulated from each other are disclosed for coupling tubes electrically in series. Alternative embodiments with a single, long, wide-bore, tube are disclosed, as are embodiments having an evaporating pan coupled in series or parallel with the tubes, and embodiments with thermal cutoff and electrical safety interlocks.
Inventors:
PETRENKO VICTOR (US)
PETRENKO FEDOR F (US)
PETRENKO FEDOR F (US)
Application Number:
PCT/US2009/063407
Publication Date:
July 08, 2010
Filing Date:
November 05, 2009
Export Citation:
Assignee:
DARTMOUTH COLLEGE (US)
PETRENKO VICTOR (US)
PETRENKO FEDOR F (US)
PETRENKO VICTOR (US)
PETRENKO FEDOR F (US)
International Classes:
F25D21/08; F25B39/04; F28F17/00
Domestic Patent References:
| WO2007021270A2 | 2007-02-22 |
Foreign References:
| US6266969B1 | 2001-07-31 | |||
| US4764193A | 1988-08-16 |
Attorney, Agent or Firm:
BARTON, Steven, K. (4845 Pearl East Circle Suite 20, Boulder CO, US)
Download PDF: