Oscillation type compressor

Abstract

Abstract PURPOSE: To secure an efficient operation for oscillating compressor by a method wherein a timing that a counter electromotive voltage crosses a zero level is detected only by supervising a terminal voltage on a drive coil, and a phase angle is selected. CONSTITUTION: A drive coil 1, a DC/AC conversion circuit 2, a DC power supply 3, a main switching transistor 4, an on-time setting circuit 5, an actuation circuit 6, etc. are potentialized. Next, a timing t 0 that a terminal voltage on the coil 1 crosses a zero level is setected by a zero cross delay circuit 7, and the circuit 7 issues a synchronizing signal f after a given period of time passes. Namely, the terminal voltage on the coil 1 is deducted, for example, by voltage VD through a shift circuit 8, and the resultant voltage is compared with the zero level by a zero detection circuit 9. A compressor can now be operated efficiently by the above constitution. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Yukio Okuda
• 👤 Tadahiro Katayama
• 👤 Toshio Izumi

Bibliographic Details