The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 17, 2013

Filed:

Oct. 22, 2009
Applicants:

Ole Thøgersen, Nyborg, DK;

Allan Dyrmose, Bogense, DK;

Dan Vad Steffensen, Spentrup, DK;

Inventors:

Ole Thøgersen, Nyborg, DK;

Allan Dyrmose, Bogense, DK;

Dan Vad Steffensen, Spentrup, DK;

Assignees:

Thermo King Corporation, Minneapolis, MN (US);

Johnson Controls Technology Company, Plymouth, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D 23/00 (2006.01); F24F 11/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for operating a refrigeration system for a container to pull down the temperature of cargo from ambient to a predetermined set-point temperature, and a system employing the method. The method includes operating a compressor at a first power to compress a refrigerant and direct the refrigerant through a condenser and an evaporator of the refrigeration system, initially operating an evaporator fan at a first speed to supply refrigerated supply air from the evaporator to the cargo within the container, sensing the temperature of the supply air, comparing the temperature of the supply air with a predetermined set-point temperature, and increasing the speed of the evaporator fan to a second speed faster than the first when the temperature of the supply air is lower than the predetermined set-point temperature to maintain the temperature of the supply air at the predetermined set-point temperature.


Find Patent Forward Citations

Quick Actions:

Thøgersen, Ole. (2013). Control of pull-down in refrigeration systems (U.S. Patent No. 8538585). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8538585

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