×

Refrigerant evaporators with pulse-electrothermal defrosting

  • US 8,424,324 B2
  • Filed: 11/05/2009
  • Issued: 04/23/2013
  • Est. Priority Date: 11/05/2008
  • Status: Active Grant
First Claim
Patent Images

1. A pulse electrothermal defrost evaporator system comprising:

  • a plurality of refrigerant tubes (108, 202, 803) formed from an electrically conductive metal;

    a first manifold (104, 204) for distributing refrigerant into the plurality of refrigerant tubes (108, 202, 803), the plurality of refrigerant tubes connected in parallel for refrigerant flow;

    a second manifold (106, 206) for receiving refrigerant from the plurality of refrigerant tubes; and

    a controller (150) for detecting ice accumulation on the refrigerant tubes and for electrically connecting the refrigerant tubes to a source of electrical power to deice the refrigerant tubes when ice is detected on the refrigerant tubes;

    wherein a plurality of the refrigerant tubes are electrically coupled together in series.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×