ADJUSTABLE VI TYPE INVERTER SCREW COMPRESSOR

Title:

ADJUSTABLE VI TYPE INVERTER SCREW COMPRESSOR

Document Type and Number:

Japanese Patent JP2004137934

Kind Code:

A

Abstract:

To always enable the maximum efficiency operation corresponding to a load.

Adjustment of ability corresponding to a load is performed by control of the number of revolution of a motor 11 by an inverter 15. When adjusting ability, performing the unload control is dispensed with to restrict deterioration of the operation efficiency. Furthermore, a capacity control valve for controlling capacity is eliminated to simplify a valve control mechanism. In order to obtain the maximum compressor efficiency corresponding to the operating condition (ability) in the variable VI, when a low VI is commanded, a compression part controller 27 moves a slide valve 19 toward a motor 11 side in the axial direction to quicken the compression process completing time, and quickly discharges the compression gas. When a high VI is commanded, the slide valve 19 is moved toward a piston 25 side in the axial direction to delay the compression process completing time, and slowly discharges the compression gas.

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Inventors:

GOTO NOZOMI
OTSUKA KANAME

Application Number:

JP2002301870A

Publication Date:

May 13, 2004

Filing Date:

October 16, 2002

Export Citation:

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Assignee:

DAIKIN IND LTD

International Classes:

F04C18/16; F04B49/06; F04C28/00; F04C28/08; F04C28/12; F04C28/26; F04C29/00; F25B1/047; (IPC1-7): F04C18/16; F04B49/06; F04C29/00; F04C29/10

Attorney, Agent or Firm:

Aoyama Aoi
Osamu Kawamiya
Hiroshi Yamazaki

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