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.
Patent No.:
Date of Patent:
Jul. 02, 2013
Filed:
Feb. 26, 2007
Naoshi Kondou, Toyoake, JP;
Akihiko Hirano, Toyoake, JP;
Shinichi Kaga, Toyoake, JP;
Masahide Yatori, Toyoake, JP;
Hideyuki Tashiro, Toyoake, JP;
Naoshi Kondou, Toyoake, JP;
Akihiko Hirano, Toyoake, JP;
Shinichi Kaga, Toyoake, JP;
Masahide Yatori, Toyoake, JP;
Hideyuki Tashiro, Toyoake, JP;
Hoshizaki Denki Kabushiki Kaishi, Aichi, JP;
Abstract
A deviation calculating unitcalculates a deviation between an internal temperature detected by a temperature sensorand a target temperature provided from a target temperature setting unitfor each predetermined time period. The deviation is integrated by a deviation integrating unit. When the integrated value exceeds a predetermined reference value, a rotational speed of an inverter motor that drives a compressor is increased. Therefore, for example, even if an internal temperature temporarily rises because a door is opened temporarily and outside air flows into a storage compartment, because there is no sudden change in the integrated value of the temperature deviation and the rotational speed of the compressor does not react in an oversensitive manner and rapidly increase. Consequently the control is stable. Thus, an unnecessarily oversensitive response to a sudden change in an internal temperature can be prevented, enabling operation at a higher efficiency.