摘要:
A pump unit consisting of an oil pump space and of an oil reservoir space, especially for servo-steering systems, in which a partition wall formed in one piece with the casting of the housing separates the pump space from the reservoir space; the housing opening of the reservoir space disposed at one housing in the direction of a reference axis extends over the entire housing cross section perpendicular to the reference axis while the housing wall portions of the reservoir space extending along the reference axis, are disposed parallel to the reference axis or in such a manner relative to the reference axis that its wall sections disposed nearer to the housing opening do not have a smaller spacing from the reference axis than directly adjacent wall sections which are disposed further away from the housing opening.
摘要:
1,156,721. Casting processes; moulds. UNITED AIRCRAFT CORP. 9 May, 1966 [27 May, 1965; 17 Feb., 1966], No. 20371/66. Heading B3F. [Also in Divisions B1, C7 and F1] A mould for casting turbine blades from a nickel based super-alloy by forming a single axially extending crystal having one of its axes less than 20 degrees from the longitudinal axis of the turbine blade, comprises an enlarged base portion 61 opening on to a water-cooled chill plate 22, a constricted passageway 63, a mould cavity 65 and a mouth 66. Random and columnar crystals form in the base portion 61, but a single crystal forms from the end of the passageway 63. A graphite susceptor 70 surrounds the mould and the casting operation may be carried out in a vacuum or in an inert, e.g. argon, atmosphere. Induction heating coils 72 are provided to maintain a temperature gradient away from the cooled chill plate 22 to ensure longitudinal solidification of the blade. The Specification contains a variety of material Specification of nickel base alloys suitable for single crystal forming in the mould, and the results of tests carried out on test samples. Heat treatment of the finished machined blade may be carried out and a sintered protective coating may be provided. The alloys described fall within the range containing, by weight, Cr 2-25%, Co 1-30%, Al 0-9%, Ti 0-6%, Mo and W 2-14%, Nb 0-3%, V 0-1À2%, the balance being nickel plus impurities.
摘要:
A turbine housing (13) for a radial flow turbine, particularly a turbine used in an exhaust gas turbocharger. The housing has a general volute shape with a substantially annular part extending around the turbine axis and an inlet duct (20) extending therefrom. The inlet duct (20) has a first wall facing part of the outer surface of the annular part of the housing, a pair of spaced webs (44) extending from the outer surface of the circular part of the housing to the first wall, the webs defining a valley (45) therebetween. The arrangement renders the housing stiffer and less prone to fatigue cracking.
摘要:
A heat-dissipating fan with an upward air-guiding member is provided. The heat-dissipating fan includes a housing, an impeller having a hub and a plurality of blades disposed around the hub, a base disposed inside the housing for supporting the impeller thereon, and an air-guiding member disposed between the base and the housing, wherein the air-guiding member has at least one inclined edge on the windward side or its opposite side relative to the horizontal line perpendicular to the axis of the heat-dissipating fan.
摘要:
A small dimension throwaway turbine device for checking the breathing flux, to be used in spirometric instruments, allowing an extreme simplification in project and realization, and comprises a turbo-turbine (4) with an inlet deflector (1) and an outlet deflector (3), and a single-piece mobile equipment comprising a blade (2) and a rotation axis (5), realized out of one single raw material.
摘要:
A compressor comprises a compressor wheel, a diffuser and a device for the wet cleaning of the diffuser of a compressor, the diffuser being arranged downstream of the compressor wheel in the flow direction of the medium to be compressed. The device comprises means for injecting a liquid, which are arranged in such a way that the liquid can be introduced, downstream of the compressor wheel, to the diffuser. The diffuser has at least partially a non-stick coating. A device of this type is suitable for removing deep-seated deposits from the surface of the diffuser.