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. 12, 2005
Filed:
May. 21, 2003
Koji Tsuchikawa, Toyoake, JP;
Masanobu Nagira, Toyoake, JP;
Koji Tsuchikawa, Toyoake, JP;
Masanobu Nagira, Toyoake, JP;
Hoshizaki Denki Kabushiki Kaisha, Toyoake, JP;
Abstract
An auger-type ice making machine has an abnormality detecting device which detects a freezing of an ice-scraping auger on the basis of a hunting of current flowing through an auger motor. Current flowing through the auger motoris taken out by a current-voltage converter, and an instantaneous value of the taken-out voltage,waveform every predetermined time is A/D converted by an A/D converterwhich is provided at a controller board. A microcomputerdetects a peak value from the A/D converted instantaneous value for determining that abnormal current flows through the auger motor, when a hunting of the peak value occurs a predetermined number of times or more that is not less than 2 during a predetermined time, or when the state where the hunting of the peak value occurs a predetermined number of times or more that is not less than 2 during a first predetermined time is detected a predetermined number of times or more that is not less than 2 during a second predetermined time that is longer than the first predetermined time. As for the number of hunting times, a state wherein the peak value once becomes greater than a predetermined value, and then, becomes smaller than the predetermined value is counted as one number of hunting times.