摘要:
A multi-type pulse-tube refrigerating system includes a common compressor 1 having a sucking port 1b and a discharging port 1a, a plurality of paralleled pressure changeover valve units 21, 22 and 23 connecting between the sucking port 1b and the discharging port 1a of the compressor 1, and a plurality of pulse-tube based cryogenic temperature generating devices 310, 410 and 510 connected to the respective pressure changeover valve units 21, 22 and 23. Employing such cryogenic temperature generating devices 310, 410 and 510, each of which is void of moving parts, limits vibrations. Moreover, instead of the pressure changeover valve units 21, 22 and 23, employing a common pressure changeover valve unit 24 for the units 21, 22 and 23 makes the refrigerating system more compact.
摘要:
A pulse tube refrigerator includes a compressor, a first high pressure valve connected with the compressor, a first high pressure passage connecting the outlet port of the compressor with the first high pressure valve, a first low pressure valve connected with the compressor, first low pressure passage connecting the inlet port of the compressor with the first low pressure valve, a regenerator connected with the first high pressure valve and the first low pressure valve, a cold head connected with the regenerator, a pulse tube connected with the cold head a second high pressure valve connected with the pulse tube. The pulse tube refrigerator further includes a second low pressure valve connected with the pulse tube, a high pressure cylinder provided in the second high pressure passage, a high pressure side partition element reciprocally provided within the high pressure cylinder and fluid tightly dividing the high pressure side cylinder into a first high pressure space and a second high pressure space, a low pressure cylinder provided in the second low pressure passage; and a low pressure side partition element reciprocally provided within the low pressure side cylinder and fluid tightly dividing the low pressure cylinder into a first low pressure space and a second low pressure space.
摘要:
In a Stirling engine, a thermal isolating space is provided between an expansion space and a heating portion so as to establish a thermal isolation of the expansion space from the heating portion.
摘要:
A higher temperature end of a pulse tube is connected to a lower side of a supporting member so as to position at a lower temperature end of the pulse tube at a lower position. Such a structure prevents free convection of a working gas in the pulse tube, which is a cause of reduced refrigerating efficiency. If a cold head is desired to be contacted with a member to be cooled down from its (lower) side, such a need can be satisfied by mounting the cold head on the lower temperature end of the pulse tube (a lower temperature end of a regenerator).
摘要:
A substrate cleaning apparatus for cleaning a rotating substrate has a scrub cleaning tool for cleaning the substrate by bringing the cleaning tool into contact with the substrate, a liquid jet spray nozzle for cleaning the substrate by yet-spraying a cleaning liquid from the nozzle to the substrate, and a swing mechanism for simultaneously swinging both of the scrub cleaning tool and the liquid jet spray nozzle on and above the substrate. The substrate cleaning apparatus also has a cleaning tool vertical driving mechanism for moving at least the cleaning tool from a position where the cleaning tool is in contact with a surface of the substrate to another position where the cleaning liquid jet-sprayed from the nozzle is applied to the cleaning tool, by vertically moving the cleaning tool.
摘要:
A CSP (Chip Size Package) of the present invention includes a semiconductor IC (Integrated Circuit) chip having I/O (Input/Output) terminals along its edges. A small size substrate has a smaller contour than the chip and has a plurality of metal terminals arranged along the edges of its bottom, and a plurality of metal bumps arranged on its top in a lattice configuration. The top of the chip and the bottom of the substrate are so configured as to be electrically connected to each other via a tape member including a plurality of leads. These leads each include a first terminal to be electrically connected to the associated I/O terminal of the chip, and a second terminal to be electrically connected to the associated metal terminal of the substrate.
摘要:
A swing training device includes a housing which contains a light source, a power source and a driving circuit for generating a beam, such as a laser beam. Suitable optics, such as a collimator lens and a beam splitter (such as a half-mirror or a prism) are placed in the housing in order to split a highly defined beam so that a first beam is radiated along the longitudinal axis of the golf club shaft and a second beam is radiated at roughly a 90.degree. angle with respect to the first beam. A gravity switch in the swing training device provides that the beams are only radiated during the backswing and follow through of a golf club, thus simplifying operation, saving power and reducing the likelihood of inadvertent radiation of the laser beam into the face of the golfer or bystanders. The invention may also include a mat which has indicia for properly aligning lighted dots generated on the mat by the laser beams in order that the golfer may develop a proper swing form. The housing has a nesting portion which is received within an upper open end of a golf club shaft. The housing is removably secured to the golf club shaft by a collar and set screw arrangement. The cap on the housing may be rotatable to provide for radial adjustment of the second beam, to suit the needs of the golfer.
摘要:
A sealing apparatus applied to a vertical type flexible package forming, filling and closing machine includes a heater block arranged near a filling tube and having a heating ridge, and a web guide attached to the outer surface of the filling tube and having a pair of guide rails, and the heating ridge cooperates with the pair of guide rails to hold the joint of a traveling package web therebetween in such a manner that the joint is elastically deformed in convex form in cross section, whereby the joint is concentratedly applied with heat and thus is heat-sealed.
摘要:
In an LSI package, terminal resistance elements are formed of resistive paste which, consisting of a mixture of fine powder of either oxidized metal or carbon and fine powder of glass, is buried and sintered in a ceramic wiring board in the direction to penetrate it. Front side wiring, connecting the parts of the terminal resistance elements exposed on the front face of the ceramic wiring board to input/output circuits of the LSI chip to be mounted on the front face of the ceramic wiring board, is formed on the front face of the ceramic wiring board and in the top layer of the ceramic wiring board. Back side wiring, connecting the parts of the terminal resistance elements exposed on the back face of the ceramic wiring board to a voltage clamp wiring network, is formed on the back face of the ceramic wiring board.
摘要:
A pulse tube refrigerator according to the present invention is capable of performing cryogenic operation sufficiently. The cryostat includes regenerators and pulse tubes. Each regenerator has a cold stage at an upper end thereof. Each pulse tube has a low-temperature end portion at a lower end thereof and a high-temperature end portion thereof, the low-temperature end portion being located lower than the cold stage. The cold stage and the low-temperature end portion are connected to each other through a line whose cubic volume is substantially negligible in comparison with that of the pulse tube. Since the pulse tube has working gas of relatively high density in an upper portion thereof and working gas of relatively low density in a lower portion thereof, there is no convection of working gas induced by the gravity. Thus, the cryostat performs cryogenic operation sufficiently without being adversely affected.