VACUUM PUMP CONTROL DEVICE, AND VACUUM DEVICE

Title:

VACUUM PUMP CONTROL DEVICE, AND VACUUM DEVICE

Document Type and Number:

WIPO Patent Application WO/2003/078838

Kind Code:

A1

Abstract:

A vacuum pump control device capable of suppressing a power consumption by a vacuum pump by varying the speed of the vacuum pump according to the operating conditions of a vacuum device, wherein a condition set part (4) sets a relation between the operating conditions of the vacuum device (10) and the rotational speed of the vacuum pump (2) for vacuating the vacuum device (10) to a proper value so that the rotational speed of the vacuum pump (2) does not reach a rotational speed more than that required, a control part (6) inputs external signals such as S1 to Sn in correspondence with the operating conditions of the vacuum device (10), reads the rotating speed of the vacuum pump (2) in correspondence with the external signals from the condition set part (4), and outputs the rotational speed, and an inverter (8) controls the rotational speed of the vacuum pump based on the output from the control part (6).

Inventors:

YAMAMOTO HIDEMI (JP)
TSUJI KOHJI (JP)

Application Number:

PCT/JP2003/003447

Publication Date:

September 25, 2003

Filing Date:

March 20, 2003

Export Citation:

Click for automatic bibliography generation Help

Assignee:

RICOH KK (JP)
YAMAMOTO HIDEMI (JP)
TSUJI KOHJI (JP)

International Classes:

F04B37/14; F04D19/04; F04B37/16; F04B49/00; F04B49/06; F04B49/10; F04B49/20; F04D27/00; (IPC1-7): F04B49/00

Foreign References:

JPH05231381A	1993-09-07
JPS5893494A	1983-06-03
JPS62102883U	1987-06-30
US6244825B1	2001-06-12

Other References: