Method of control for a refrigerated merchandiser

Details Method of control for a refrigerated merchandiser Method of control for a refrigerated merchandiser

2008-02-29

2008-11-18

Tapolcai, William E (Department: 3744)

Refrigeration

Processes

Defrosting or frost inhibiting

C062S155000, C062S256000

Reexamination Certificate

active

07451607

ABSTRACT:
A method of controlling a refrigerated merchandiser. The method includes providing a case that defines a product display area and an air passage that has an inlet and an outlet, positioning an evaporator in the air passage to refrigerate the air, positioning a fan in the air passage to move the air through the passage, and logging a first temperature value during frost-free operation of the evaporator. The method also includes logging a second temperature value during frosted operation of the evaporator, calculating a difference of the first and second temperature values, and defrosting the evaporator when the difference exceeds a pre-determined value. Each of the first temperature value and the second temperature value is independently associated with at least one of the air entering the inlet of the air passage, the air exiting the outlet of the air passage, and saturated evaporator temperature.

REFERENCES:
patent: 2531136 (1950-11-01), Kurtz
patent: 3381488 (1968-05-01), Lewis
patent: 3691782 (1972-09-01), Holzer
patent: 4662184 (1987-05-01), Pohl et al.
patent: 4887436 (1989-12-01), Enomoto et al.
patent: 4964281 (1990-10-01), Tanaka
patent: 4993233 (1991-02-01), Borton et al.
patent: 5187941 (1993-02-01), Tershak et al.
patent: 5317881 (1994-06-01), Colvin
patent: 5379608 (1995-01-01), Ishimaru et al.
patent: 5502979 (1996-04-01), Renard
patent: 5647220 (1997-07-01), Kawaguchi et al.
patent: 5809789 (1998-09-01), Baker et al.
patent: RE37630 (2002-04-01), Behr
patent: 6411916 (2002-06-01), Pellerin
patent: 6502409 (2003-01-01), Gatling et al.
patent: 6591622 (2003-07-01), Gherman et al.
patent: 6609078 (2003-08-01), Starling et al.
patent: 6619052 (2003-09-01), Nash, Jr.
patent: 6949021 (2005-09-01), Ichishi et al.
patent: 2003/0024256 (2003-02-01), Hanson
patent: 2167579 (1986-05-01), None

Affiliated with

Also associated with

Rating

Method of control for a refrigerated merchandiser does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of control for a refrigerated merchandiser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of control for a refrigerated merchandiser will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4040610