Title:
【発明の名称】空気調和機
Document Type and Number:
Japanese Patent JP2664702
Kind Code:
B2
Abstract:
PURPOSE:To obtain an oil equalizing effect between each compressor without using an oil equalizer pipe of large bore by providing an oil equalizer pipe between both the compressors while operating both the compressors in almost the same operating frequency or with a difference of predetermined frequency while both the compressors are in simultaneous operation. CONSTITUTION:While two sets of compressors 1, 2 are in operation, oil equalizing operation is performed alternately repeating in every fixed period the first oil equalizing operation, which relatively on-off controls by every fixed time an operating frequency of the one compressor 1 of both the compressors 1, 2 as compared with an operating frequency of the compressor 2, during this time, holds its operating frequency to the fixed operating frequency, and the second oil equalizing operation which performs the first oil equalizing operation in a condition that both the compressors 1, 2 are replaced.
Inventors:
Kitamoto Manabu
Application Number:
JP2811588A
Publication Date:
October 22, 1997
Filing Date:
February 09, 1988
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
F04B49/06; F04B41/06; F24F11/02; F25B13/00; (IPC1-7): F04B49/06
Domestic Patent References:
| JP568878U |
Attorney, Agent or Firm:
Takehiko Suzue (2 outside)