公开(公告)号：US4622823A

公开(公告)日：1986-11-18

申请号：US684244

申请日：1984-12-20

申请人： Tadao Ishizawa ,  Hirofumi Kotaka ,  Masami Kakinuma

发明人： Tadao Ishizawa ,  Hirofumi Kotaka ,  Masami Kakinuma

IPC分类号： F25B9/14 ,  F25B9/00

CPC分类号： F25B9/14 ,  F25B2309/003 ,  F25B2309/006

摘要： A refrigerator comprising a piston which is driven in a reciprocating fashion within a cylinder by the difference in pressure of working gas alternately supplied to first and second variable-volume chambers separated by said piston, a motor, a rotary valve which is attached to an output shaft of said motor and which switches a passageway for said working gas provided between said first and second variable-volume chambers alternately to a high-pressure supply side and low-pressure return side, and at the same time blocks said passageway, and a cam which is mounted on an output shaft of said motor and which guides the reciprocation of said piston in accordance with the motion of said rotary valve connected to said piston rod.

摘要翻译： 一种冰箱，包括活塞，所述活塞通过交替地供给到由所述活塞分离的第一和第二可变容积室的工作气体的压力差在气缸内被驱动，电动机，连接到输出端的旋转阀 并且其将设置在所述第一和第二可变容积室之间的所述工作气体的通道交替地切换到高压供应侧和低压返回侧，并且同时阻挡所述通道和凸轮 其安装在所述电动机的输出轴上，并且根据连接到所述活塞杆的所述旋转阀的运动来引导所述活塞的往复运动。

公开(公告)号：US4697994A

公开(公告)日：1987-10-06

申请号：US684126

申请日：1984-12-20

申请人： Tadao Ishizawa ,  Hirofumi Kotaka ,  Masami Kakinuma

发明人： Tadao Ishizawa ,  Hirofumi Kotaka ,  Masami Kakinuma

IPC分类号： F04C23/00 ,  B25J9/00 ,  F04C18/344 ,  F04C25/02

CPC分类号： F04C18/3446

摘要： A multistage discharge type rotary vacuum pump comprises a rotor rotably mounted within a cylinder chamber and dividing the cylinder chamber into first stage and second stage working chambers. A plurality of radially extending vanes are slidably mounted in the rotor in angularly spaced relation, and the vanes undergo radial sliding movement during rotation of the rotor such that the vane tips maintain sliding contact with the cylinder chamber. Each working chamber has an inlet port at the upstream side thereof for admitting exhaust gas evacuated from a confined space during use of the pump, and an outlet port at the downstream side thereof for discharging the exhaust gas which has been compressed in the working chamber in response to rotation of the rotor. The outlet port of the first stage working chamber communicates through a discharge valve with a storage chamber, and the storage chamber communicates through a pressure-responsive discharge valve with the inlet port of the second stage working chamber. The exhaust gas which is discharged from the first stage working chamber is stored in the storage chamber and whenever the gas pressure reaches a predetermined value, the pressure-responsive discharge valve opens to admit the compressed exhaust gas through the inlet port into the second stage working chamber. Such a construction enables miniaturization of the pump structure, a reduction in the driving force for rotationally driving the rotor, and an increased exhaust efficiency of the pump.

摘要翻译： 多级排放式旋转真空泵包括可转动地安装在气缸室内并将气缸室分成第一级和第二级工作室的转子。 多个径向延伸的叶片以角度间隔的关系可滑动地安装在转子中，并且叶片在转子旋转期间经历径向滑动运动，使得叶片尖端保持与气缸室的滑动接触。 每个工作室在其上游侧具有入口，用于允许在使用泵期间从密闭空间排出的废气，以及在其下游侧的出口，用于排出在工作室中被压缩的废气 响应于转子的旋转。 第一级工作室的出口通过具有储存室的排出阀连通，并且储存室通过压力响应性排出阀与第二级工作室的入口连通。 从第一级工作室排出的排气被储存在储存室中，并且每当气体压力达到预定值时，压力响应性排出阀打开，从而将压缩废气通过入口进入第二级工作 房间。 这种结构使得泵结构能够小型化，用于旋转驱动转子的驱动力的降低以及泵的排气效率提高。

公开(公告)号：US4717315A

公开(公告)日：1988-01-05

申请号：US694907

申请日：1985-01-25

申请人： Masaharu Miki ,  Tadao Ishizawa ,  Chiaki Urano

发明人： Masaharu Miki ,  Tadao Ishizawa ,  Chiaki Urano

IPC分类号： F16C32/04 ,  F04D19/04 ,  F04B17/00

CPC分类号： F04D19/048 ,  F16C32/044 ,  F16C2300/62

摘要： An axial-flow molecular pump has a first active magnetic bearing for axially supporting and controlling a pump member comprised of a set of permanent magnets on the upper end of the pump member cooperating with a set of permanent magnets fixedly mounted at the upper end of a pump housing, a first electromagnet coacting with the sets of permanent magnets and operative when energized for controlling the axial position of the pump member, and an axial sensor for detecting axial displacement of the pump member and accordingly controlling the energization of the first electromagnet. A second active magnetic bearing for radially supporting and controlling the pump member comprises a second electromagnet operative when energized for controlling the radial position of the pump member, and a radial sensor for detecting radial displacement of the pump member and accordingly controlling the energization of the second electromagnet. Radial vibrations of the pump member during rotation thereof are rapidly suppressed in a very short decay time period due to the two active magnetic bearings which have rapid response characteristics and are able to effect precise and accurate positioning of the pump member.

摘要翻译： 轴向流分子泵具有第一主动磁轴承，用于轴向支撑和控制由泵组件上端组成的一组永磁体的泵构件，该泵组件与一固定地安装在 泵壳体，与这组永磁体共同作用的第一电磁体，并且当被激励以用于控制泵构件的轴向位置时操作;以及轴向传感器，用于检测泵构件的轴向位移并因此控制第一电磁体的通电。 用于径向支撑和控制泵构件的第二主动磁轴承包括用于控制泵构件的径向位置的通电时操作的第二电磁体和用于检测泵构件的径向位移的径向传感器，因此控制第二 电磁铁 由于具有快速响应特性并且能够实现泵构件的精确和精确定位的两个主动磁轴承，在非常短的衰减时间段内，泵构件在旋转期间的径向振动被迅速地抑制。

公开(公告)号：US4387936A

公开(公告)日：1983-06-14

申请号：US305364

申请日：1981-09-24

申请人： Tadao Ishizawa

发明人： Tadao Ishizawa

IPC分类号： F16C32/04 ,  F16C39/06 ,  F16C39/00

CPC分类号： F16C32/0487 ,  F16C32/0468

摘要： A rotor armature assembly for an electromagnetic radial bearing for use in high rotational speed applications comprises a rotor armature fixedly connected to a rotor shaft. The rotor armature is formed of a plurality of annular magnetic plates each comprised of soft magnetic material, and a plurality of annular reinforcing plates each comprised of material having greater tensile strength than the soft magnetic material. The reinforcing plates are interposed between the magnetic plates and all of the plates are axially urged together so that adjoining plates are in frictional engagement with each other to form a laminated plate structure. The reinforcing plates frictionally restrain radial outward deformation of the magnetic plates due to centrifugal force during high speed rotation of the rotor armature assembly.

摘要翻译： 用于高转速应用的电磁径向轴承的转子电枢组件包括固定地连接到转子轴的转子电枢。 转子电枢由多个环形磁板形成，每个环形磁性板均由软磁性材料构成，多个环形增强板各自包括比软磁材料具有更大拉伸强度的材料。 加强板插入在磁板之间，并且所有的板被轴向推压在一起，使得相邻的板彼此摩擦接合以形成层压板结构。 加强板在转子电枢组件的高速旋转期间由于离心力而摩擦地抑制磁板的径向向外变形。

公开(公告)号：US4145627A

公开(公告)日：1979-03-20

申请号：US772148

申请日：1977-02-25

申请人： Tadao Ishizawa

发明人： Tadao Ishizawa

IPC分类号： H03H9/02 ,  H01L41/04 ,  H03H9/10 ,  H01L41/10

CPC分类号： H03H9/1014 ,  H01L41/04

摘要： A piezoelectric resonator element having supporting lead members projecting in opposite directions therefrom is positioned in a tubular dielectric case having tubular metal cap members affixed at opposite ends thereof and extruding beyond the ends of the case. Inner end portions of the cap members are hermetically sealed to the case. Intermediate portions of the cap members beyond the ends of the case are compressed onto end portions of the lead members to secure the resonator element in position in the case and to make electrical contact between the lead members and the metal cap members. End portions of the cap members beyond the ends of the lead members are compressed to seal the case, the sealing being effected in a vacuum so as to evacuate the interior of the case. In order further to seal the case, the outer ends of the cap members may be welded or soldered.

摘要翻译： 具有从其相反方向突出的支撑引线构件的压电谐振元件被定位在管状电介质壳体中，管状电介质壳体具有固定在其相对端的管状金属盖构件并且挤出超过外壳的端部。 盖构件的内端部与气密密封。 超过壳体端部的盖构件的中间部分被压缩到引线构件的端部上，以将谐振器元件固定在壳体中的适当位置，并且在引线构件和金属盖构件之间进行电接触。 帽部件超出引线部件的端部的端部被压缩以密封壳体，密封件在真空中进行，以便将壳体的内部抽空。 为了进一步密封壳体，盖构件的外端可以被焊接或焊接。