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    • 4. 发明专利
    • VARIABLE FLOW GAS VALVE
    • JPH10220600A
    • 1998-08-21
    • JP2420498
    • 1998-02-05
    • HILL ROM CO INC
    • GOODWIN VERNON L
    • A47C27/08A47C27/10A61G7/00A61G7/043A61G7/047A61G7/05A61G7/057F16K3/24F16K31/04F16K37/00
    • PROBLEM TO BE SOLVED: To facilitate supply-exhaust control of gas to a plurality of bags by providing outlets communicated with at least two cylinder chambers, and a communication control means for variably controlling communication of inlets and outlets in a variable flow gas valve ideal for a plurality of gas filled bags forming a bed or the like. SOLUTION: A variable flow gas valve (multiple outlet valve) 130 of multiple output is provided to control blast flow output of a blower 96 operated at constant speed. This multiple outlet valve 130 is provided with a plurality of variable valve passages. One of these passages is used as an exhaust valve so as to be able to ventilate to the atmosphere through a muffler 97. The other passage is connected to a gas supply means leading to a bag in one of a plurality of support zones. At the time of expansion operation of the bag, a motor 160 for controlling the flow setting of the exhaust valve of the multiple outlet valve 130 is automatically actuated by a control means so as to adjust the whole available flow to be divided between the support zones of a support structure such as a bed formed by providing a plurality of bags in line.