Pumps – Combined
Reexamination Certificate
2007-09-25
2007-09-25
Leykin, Rita (Department: 2837)
Pumps
Combined
C417S423140, C417S417000, C417S572000, C310S051000, C310S052000, C310S053000
Reexamination Certificate
active
11355248
ABSTRACT:
A control device includes a shot-pulse control unit that provides, at a time of starting a synchronous motor, a predetermined current to each phase of a stator of the motor for a short time; a detecting unit that detects a current flowing through each phase when the predetermined current is provided; an estimating unit that estimates a position of the rotor by comparing detected values; a voltage control unit that controls application of a voltage to the synchronous motor based on a high-pressure side pressure of the compressor when the compressor is failed to be started due to any cause; and a magnetism-resistant section having a conductive layer sandwiched by insulating layers. The magnetism-resistant section covers a portion of a substrate of the control device, and a portion at which the conductive layer is exposed is in contact with the housing or a part conducting heat to the housing.
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Asai Masahiko
Hattori Makoto
Nakagami Takashi
Nakano Koji
Takashige Takayuki
Leykin Rita
Mitsubishi Heavy Industries Ltd.
Westerman, Hattori, Daniels & Adrian , LLP.
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