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    • 1. 发明公开
    • A vacuum pumping system and method of controlling the same
    • Vakuumpumpensystem und Methode zur Steuerung desselben
    • EP1367260A3
    • 2004-03-31
    • EP03253197.2
    • 2003-05-22
    • The BOC Group plc
    • Savidge, Derek Graeme MadgewickTurner, NeilHuntley, Graeme
    • F04C29/10
    • F04C28/24F04B37/14F04C25/02F04C28/065F04C2220/10F04C2220/30F04C2270/02Y10T137/86083
    • A vacuum pump system (10; 36; 46) for pumping gas from an enclosure (12) comprises: a vacuum pump unit (14) having a pump inlet (16) connectable with an outlet (18) of such an enclosure and a pump outlet (20) for exhausting gas; and a chamber (22; 50) selectively connectable with the pump inlet and the pump outlet, such that, in use, in a first state gas can be pumped from the chamber to the pump inlet by the vacuum pump unit and in a second state gas can be evacuated from the pump outlet to the chamber to reduce pressure at the pump outlet. A method of controlling the vacuum pump system (10; 36; 46) comprises a first step of pumping gas from the chamber to the pump inlet using the vacuum pump unit and a second step of allowing gas to be evacuated from the pump outlet to the chamber to reduce pressure at the pump outlet.
    • 一种用于从外壳(12)泵送气体的真空泵系统(10; 36; 46)包括:真空泵单元(14),其具有可与这种外壳的出口(18)连接的泵入口(16) 用于排出气体的出口(20) 以及可选择性地与泵入口和泵出口连接的腔室(22; 50),使得在使用中,在第一状态下,气体可以通过真空泵单元从腔室泵送到泵入口,并且处于第二状态 气体可以从泵出口抽空到室以减小泵出口处的压力。 控制真空泵系统(10; 36; 46)的方法包括使用真空泵单元将气体从腔室泵送到泵入口的第一步骤,以及允许气体从 泵出口到腔室以减少泵出口处的压力。
    • 2. 发明公开
    • Non-return valves for vacuum pumps
    • RückschlagventilfürVakuumpumpen
    • EP1400690A2
    • 2004-03-24
    • EP03255709.2
    • 2003-09-12
    • The BOC Group plc
    • Savidge, DerekNorth, PhilipTurner, Neil
    • F04B39/10F16K15/04
    • F04B39/1006F16K15/048F16K25/005
    • A vacuum pump non-return valve comprises a valve body (12) that defines a through-passage having an inlet side (14i) and an outlet side (14e). A valve seat (16) is disposed intermediate said inlet and outlet sides of the through-passage. The valve seat (16) is defined by an insert made of an elastomeric material. The non-return valve has a ball (18) arranged to seat against the valve seat to prevent the passage of gaseous fluids from the outlet side (14e) to the inlet side (14i). The ball is displaceable, in use, from valve seat by pressurised gaseous fluid in the inlet side of the through-passage to permit passage of gaseous fluid from the inlet side to the outlet side of the through-passage.
    • 真空泵止回阀包括限定具有入口侧(14i)和出口侧(14e)的通道的阀体(12)。 阀座(16)设置在贯通通道的入口侧和出口侧之间。 阀座(16)由弹性材料制成的插入件限定。 止回阀具有布置成抵靠阀座抵靠的球体(18),以防止气体流体从出口侧(14e)通向入口侧(14i)。 球在使用中通过加压气态流体在通道的入口侧从阀座移位,以允许气态流体从通道的入口侧流出到出口侧。
    • 3. 发明公开
    • A vacuum pumping system and method of controlling the same
    • Methode zur Steuerung eines Vakuumpumpensystems
    • EP1367260A2
    • 2003-12-03
    • EP03253197.2
    • 2003-05-22
    • The BOC Group plc
    • Savidge, Derek Graeme MadgewickTurner, NeilHuntley, Graeme
    • F04C29/10
    • F04C28/24F04B37/14F04C25/02F04C28/065F04C2220/10F04C2220/30F04C2270/02Y10T137/86083
    • A vacuum pump system (10; 36; 46) for pumping gas from an enclosure (12) comprises: a vacuum pump unit (14) having a pump inlet (16) connectable with an outlet (18) of such an enclosure and a pump outlet (20) for exhausting gas; and a chamber (22; 50) selectively connectable with the pump inlet and the pump outlet, such that, in use, in a first state gas can be pumped from the chamber to the pump inlet by the vacuum pump unit and in a second state gas can be evacuated from the pump outlet to the chamber to reduce pressure at the pump outlet.
      A method of controlling the vacuum pump system (10; 36; 46) comprises a first step of pumping gas from the chamber to the pump inlet using the vacuum pump unit and a second step of allowing gas to be evacuated from the pump outlet to the chamber to reduce pressure at the pump outlet.
    • 一种用于从外壳(12)泵送气体的真空泵系统(10; 36; 46)包括:真空泵单元(14),其具有可与这种外壳的出口(18)连接的泵入口(16) 用于排出气体的出口(20) 以及可选择性地与泵入口和泵出口连接的腔室(22; 50),使得在使用中,在第一状态下,气体可以通过真空泵单元从腔室泵送到泵入口,并且处于第二状态 气体可以从泵出口抽空到室以减小泵出口处的压力。 控制真空泵系统(10; 36; 46)的方法包括使用真空泵单元将气体从腔室泵送到泵入口的第一步骤,以及允许气体从 泵出口到腔室以减少泵出口处的压力。