摘要:
A prewhirl type inlet casing for inducing a spiral stream in fluid comprising a suction passage arranged on an upstream side, being orthogonal to a rotary shaft of fluid machinery, and an internal passage connected to the suction passage, the internal passage being formed in a spiral shape so as to induce a swirl stream orthogonal to the rotary shaft in the fluid. A guide vane is provided in the fluid passage in the inlet casing. The guide vane has a rectifying function capable of distributing flow rates in the swirl stream of the fluid in the internal passage between the swirl center side and the swirl outer peripheral side and has a rectifying function capable of causing the fluid to deflect into the swirling direction of the swirl stream induced by the internal passage. With these rectifying functions, a rectified swirl stream can be easily created in the in internal passage so as to prevent occurrence of a deviation of a cavitations inducing zone. With this configuration, it is possible to effectively prevent occurrence of the deviation of the cavitations inducing zone in order to aim at simplifying the configuration of the internal passage.
摘要:
A prewhirl type inlet casing for inducing a spiral stream in fluid has a suction passage arranged on an upstream side, being orthogonal to a rotary shaft of fluid machinery, and an internal passage connected to the suction passage, the internal passage being formed in a spiral shape so as to induce a swirl stream orthogonal to the rotary shaft in the fluid. A guide vane provided in the fluid passage in the inlet casing has a rectifying function capable of distributing flow rates in the swirl stream of the fluid in the internal passage between the swirl center side and the swirl outer peripheral side, and causing the fluid to deflect into the swirling direction of the swirl stream induced by the internal passage.
摘要:
A battery case for a vehicle includes a tray member (22) made of resin and configured to hold a battery (38), one or more beam members (30) arranged so as to extend in at least one of width and longitudinal directions of the tray member, the one or more beam members supporting the tray member and having a recess (50) formed therein, and a bottom wall (58) interposed between the tray member and the one or more beam members and closing an aperture plane of the recess of the one or more beam members to form a closed cross-section, the bottom wall being constituted by a continuous metal plate underlying a bottom plate of the tray member.
摘要:
The guide vanes comprise two kinds of guide vanes which are alternately placed in the circumferential direction of a shroud. One kind of the guide vanes have a longer length than the other kind of the guide vanes, in the region which is close to the surface of the hub, but have substantially the same length as the other kind of the guide vanes, in the region which is close to the shroud. The leading edges of the second kind of guide vane are located further downstream in the pump axial direction than the leading edges of the first kind of guide vanes.
摘要:
The guide vanes comprise two kinds of guide vanes which are alternatively placed around the angular direction. One kind of the guide vanes have longer length than the other kinds of the guide vanes at the region which is close to the surface of hub but have substantially same lengths the other kind of the guide vanes at the region which is close to the shroud. The leading edges of the second kind of guide vane locate in the further downstream of the pump axial direction than the fist kind of guide vanes.
摘要:
An additional image is formed on a recording medium by filling a predetermined area including a punched portion or a stapled portion, in addition to an image which is to be formed originally, such as a text document. The additional image is formed with white developer or transparent developer. Since the thickness of the recording medium is increased by the white developer or transparent developer forming the additional image portion, the region around the punched portion or the stapled portion is reinforced and the recording medium is kept from being broken easily. When the image and the additional image are superposed, the superposition of the image and the additional image is avoided by either reducing the image or changing the position of the image to be formed.
摘要:
A battery case comprises a tray member (20), a cover member (22), a first holding member (24) of a metal arranged to contact a tray flange (32) with its outer circumferential edge portion projecting outward from the tray flange by a predetermined length, a second holding member (26) of a metal arranged to contact a cover flange (36) with its outer circumferential edge portion projecting outward from the cover flange by a predetermined length, and a fastening means (28, 29) fastening the first and second holding members together at a predetermined location outwardly away from the tray and cover flanges.
摘要:
Radial cross sections of front sides in rotational direction of impellers attached to a pump shaft obliquely to a circumferential direction from an upstream side toward a downstream side have concave shapes protruding toward the upstream side, and radial cross sections of rear sides in rotational direction of the impellers have concave shapes protruding toward the downstream side.
摘要:
An automatic winder having a steam setting apparatus in which a steam setter for steaming bobbins is disposed along winding units behind a winder body in a system connecting an automatic winder for rewinding spinning bobbins to a fine spinning frame including a multitude of spindles for producing spinning bobbins, and a drying-holding line is provided subsequently to the steam setter.
摘要:
A tire for a motorcycle comprising a tread, sidewalls extending inwardly from both ends of the tread in a radial direction, bead portions positioned at the radially inward ends of the sidewalls, a toroidal reinforcement carcass composed of reinforcement cords which extend approximately parallel with each other in the radial direction of the tire and of which both end portions are turned up around bead cores, a breaker arranged on the radially outer side of the carcass, the breaker comprising reinforcement tire cords whose tensile strength is not less than 7 g/d and initial modulus is not less than 200 g/d laid at angles of 10.degree. to 45.degree. to the circumferential direction, and a band over the breaker and having a width greater than the breaker so as to axially extend past the outermost edges of the breaker and comprising parallel reinforcement cords laid at angles of 10.degree. to 25.degree. to the circumferential direction, the reinforcement cords of the band having a modulus less than the modulus of the reinforcement cords of the breaker.The tire has resistance to wear, good grip, and stable high speed running properties.