×

Defrost control using fan data

  • US 10,352,611 B2
  • Filed: 10/26/2017
  • Issued: 07/16/2019
  • Est. Priority Date: 11/30/2012
  • Status: Active Grant
First Claim
Patent Images

1. A method of distinguishing between a frost condition and a nonfrost condition in a vapor compression system, the method comprising:

  • determining a change in a fan property;

    determining a time period in which the change in the fan property occurred;

    determining if an event has occurred based at least partially on the change in the fan property and the time period;

    determining that the event is a frost condition if the time period is within a predetermined frost period of time;

    determining that the event is a slow nonfrost condition if the time period is greater than a predetermined slow amount of time;

    determining that the event is a sudden nonfrost condition if the time period is less than a predetermined sudden amount of time; and

    initiating a defrost cycle if the event is a frost condition.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×