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:
Jun. 28, 2016
Filed:
Apr. 13, 2012
Masahiro Inaniwa, Ibaraki, JP;
Hiroyuki Takahashi, Ibaraki, JP;
Kouichi Akatsu, Ibaraki, JP;
Hisanobu Ooyama, Ibaraki, JP;
Yuki Hodotsuka, Ibaraki, JP;
Hidetaka Osawa, Ibaraki, JP;
Masahiro Inaniwa, Ibaraki, JP;
Hiroyuki Takahashi, Ibaraki, JP;
Kouichi Akatsu, Ibaraki, JP;
Hisanobu Ooyama, Ibaraki, JP;
Yuki Hodotsuka, Ibaraki, JP;
Hidetaka Osawa, Ibaraki, JP;
HITACHI KOKI CO., LTD., Tokyo, JP;
Abstract
A centrifuge including: a rotor configured to be driven by a motor and to hold a sample, a centrifuge inverter, a chamber accommodating the rotor, a temperature sensor configured to detect the temperature of the chamber, a cooling machine configured to cool the chamber and including a compressor, a compressor inverter, a compressor motor configured to be controlled in a variable speed and a control device, wherein the control device carries out a feedback control of the compressor motor based on a preset temperature and a detected temperature of the temperature sensor when the rotation number of the compressor motor is larger than a predetermined rotation number, and the control device carries out an intermittent control for turning ON-OFF the cooling function of the compressor when the rotation number of the compressor motor is smaller than a predetermined rotation number.