Title:
【発明の名称】二床間の気流切換のためのスプールバルブ
Document Type and Number:
Japanese Patent JP2002542451
Kind Code:
A
Abstract:
A dual-bed ventilation air regeneration system is adapted for use in conjunction with a ventilation or respiration air loop of an astronaut space suit wherein the ventilation loop includes inlet and outlet manifolds. A pair of chemical beds, having inlet and outlet manifolds, are provided for alternatively adsorbing carbon dioxide and water vapor deposits from the ventilation or respiration air, and for desorbing such deposits to the hard vacuum of space through spool valve housing vacuum ports. A single spool valve controls the fluidic connections between the ventilation air inlet and outlet manifolds, the chemical bed inlet and outlet manifolds, and the exhaust or vacuum ports. The spool valve also permits equalization of the chemical bed pressures and volumes during transition between chemical bed changeovers between the adsorbing and desorbing phases so as to save one-half the volume of air as compared to that which would otherwise be lost to space if such pressure equalization was not achieved. In addition, air which is utilzied to actuate the spool valve in its reciprocating movements is used to replenish air, within the ventilation loop, which was lost to vacuum during the previous desorbing cycle.
Inventors:
Dean, W Clark
Application Number:
JP2000613551A
Publication Date:
December 10, 2002
Filing Date:
April 14, 2000
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORPORATION
International Classes:
A62B7/14; B01D53/04; B01D53/047; B64G1/48; B64G6/00; F16K11/07; F16K31/42; F24F5/00; (IPC1-7): F24F5/00; B64G1/48; B64G6/00
Attorney, Agent or Firm:
Youichi Oshima