Gas pumping installation having means for regulating its pumping speed
    71.
    发明授权
    Gas pumping installation having means for regulating its pumping speed 失效
    具有用于调节其泵送速度的装置的气体泵送安装

    公开(公告)号:US5244353A

    公开(公告)日:1993-09-14

    申请号:US956243

    申请日:1992-10-05

    摘要: A Roots-type machine is connected to an enclosure to be evacuated via a suction inlet portion, and to a primary pump via a delivery outlet portion. A bellows is disposed transversely in the inlet portion, one end of the bellows being fixed in gastight manner in the wall, and the other end being closed and movable, so that the bellows forms a regulating member for regulating the gas-flow sectional area in the inlet portion. The outside face of the movable end of the bellows is subjected to the pressure in the inlet portion, and the inside face of the movable end is subjected to the pressure in the delivery outlet portion via a rod passing through the wall, and via a channel. The invention applies to Roots-type machines, in particular for automatically regulating the pumping speed so as to match it to the flow-rate of the corresponding primary pump.

    摘要翻译: 罗茨式机器通过吸入口部分连接到要抽真空的外壳,并经由出口部分连接到主泵。 波纹管横向放置在入口部分中,波纹管的一端以气密的方式固定在壁中,另一端封闭并可移动,使得波纹管形成用于调节气流截面积的调节构件 入口部分。 波纹管的可动端的外表面受到入口部分的压力,可动端的内表面经由穿过壁的杆经过输送出口部分的压力,并且经由通道 。 本发明适用于罗茨式机器,特别是用于自动调节泵送速度,以便将其与相应的主泵的流量相匹配。

    Variable capacity vane compressor controllable by an external control
signal
    72.
    发明授权
    Variable capacity vane compressor controllable by an external control signal 失效
    通过外部控制信号控制的可变能力的空气压缩机

    公开(公告)号:US5129791A

    公开(公告)日:1992-07-14

    申请号:US675655

    申请日:1991-03-27

    申请人: Nobuyuki Nakajima

    发明人: Nobuyuki Nakajima

    CPC分类号: F04C28/14

    摘要: A variable capacity vane compressor has a control element for determining timing of start of compression of a refrigerant gas. In a high-pressure chamber there prevails control pressure which acts on the control element for urging same toward a maximum capacity position thereof. The control pressure is created by introducing the refrigerant gas from a discharging space within which discharge pressure prevails into the high-pressure chamber via a high pressure-introducing passageway. The high pressure-introducing passageway has a restriction hole for restricting flow of the refrigerant gas. An electromagnetic value opens and closes the restriction hole in response to an external control signal. The refrigerant gas is allowed to constantly leak from the high-pressure chamber into a suction chamber via a leak passage, the leak passage having a cross-sectional area smaller than that of the restriction hole.

    摘要翻译: 可变容量叶片式压缩机具有用于确定制冷剂气体的压缩开始时间的控制元件。 在高压室中,存在作用在控制元件上的控制压力,用于将其推向其最大容量位置。 控制压力是通过高压引入通道将制冷剂气体从排出压力占优势的排出空间引入高压室而产生的。 高压引入通道具有用于限制制冷剂气体流动的限制孔。 电磁值响应于外部控制信号打开和​​关闭限制孔。 允许制冷剂气体经由泄漏通道从高压室不断地泄漏到吸入室中,泄漏通道的截面积小于限制孔的横截面面积。

    Variable-delivery vane-type rotary compressor
    73.
    发明授权
    Variable-delivery vane-type rotary compressor 失效
    可变式叶片式旋转式压缩机

    公开(公告)号:US4859154A

    公开(公告)日:1989-08-22

    申请号:US83267

    申请日:1987-08-05

    CPC分类号: F04C28/14

    摘要: A variable-delivery vane-type rotary compressor includes means for controlling discharge by-passed from an actuating chamber and an inhalator chamber by changing area of opening provided between a front plate and a cam ring. The means can control discharge by rotation of a disc having at least one by-pass opening. The disc can rotate in accordance with signals produced from at least one sensor.

    摘要翻译: 可变输送叶片型旋转压缩机包括用于通过改变设置在前板和凸轮环之间的开口的面积来控制从致动室和吸入器室排出的排出的装置。 该装置可以通过具有至少一个旁路开口的盘的旋转来控制排放。 光盘可以根据从至少一个传感器产生的信号旋转。

    Capacity control device for compressor
    74.
    发明授权
    Capacity control device for compressor 失效
    压缩机容量控制装置

    公开(公告)号:US4619595A

    公开(公告)日:1986-10-28

    申请号:US600903

    申请日:1984-04-16

    CPC分类号: F04C29/12 F04C28/18

    摘要: A capacity control device for a compressor used with an air conditioning system for an automotive vehicle and driven by an engine of the automotive vehicle, including flow resistance portions provided in a refrigerant inlet passage and capable of reducing the flow rate of a refrigerant flowing into working chambers of the compressor as the rotational speed of the compressor (or the engine speed) rises, to thereby reduce the volumetric efficiency of the compressor in a high engine speed range.

    摘要翻译: 一种用于与机动车辆的空调系统一起使用并由机动车辆的发动机驱动的压缩机的容量控制装置,包括设置在制冷剂入口通道中的流动阻力部分,并且能够降低流入工作的制冷剂的流量 随着压缩机的转速(或发动机转速),压缩机的室升高,从而在高发动机转速范围内降低压缩机的容积效率。

    Compressor having functions of discharge interruption and discharge
control of pressurized gas
    75.
    发明授权
    Compressor having functions of discharge interruption and discharge control of pressurized gas 失效
    压缩机具有放电中断和加压气体排放控制功能

    公开(公告)号:US4410299A

    公开(公告)日:1983-10-18

    申请号:US222154

    申请日:1981-01-02

    摘要: A compressor is provided which has a housing formed with a volume control chamber located in the vicinity of the discharge port and within which a valve is mounted, a first port communicating the volume control chamber with a pumping chamber defined within the housing, and a second port communicating the volume control chamber with the suction port. The valve is disposed so as to open selectively the first port alone or both the first port and the second port, to thereby make it possible to control the discharge rate of pressurized gas or interrupt discharge of same without interruption of driving of the gas pressurizing member of the compressor for compression of gas such as a rotor or a piston.

    摘要翻译: 提供一种压缩机,其具有壳体,该壳体形成有位于排出口附近的容积控制室,其中安装有阀;第一端口,其将容积控制室与限定在壳体内的泵送室连通;第二端口, 将音量控制室与吸入口连通。 阀被配置为仅选择性地打开第一端口或第一端口和第二端口两者,从而使得可以控制加压气体的排出速率或其中断排出,而不会中断气体加压构件的驱动 的压缩机用于压缩诸如转子或活塞之类的气体。