摘要:
A pump including a first substrate in a plane with a side having a cavity formed therein. There are intake and discharge channels in the side for admitting and discharging a fluid. There is a second substrate having a side joined to the first substrate, to close the channels and form tubes in which pumped fluid flows. The second substrate also has a membrane to close the cavity to form a leak-tight chamber. The membrane is deformable: in order to expel the fluid out of the chamber via the discharge channel, and to suck the fluid into the chamber via the intake channel. There is actuator capable of converting the energy into movement of the membrane and an assembly for measuring the temperature/flow rate of the fluid. There is a temperature probe placed on the exterior side of the insulating material to insulate thermally the probe from the substrate.
摘要:
A nickel (Ni) based alloy for forging includes: 0.001 to 0.1 wt. % of carbon (C); 12 to 23 wt. % of chromium (Cr); 3.5 to 5.0 wt. % of aluminum (Al); 5 to 12 combined wt. % of tungsten (W) and molybdenum (Mo) in which the Mo content is 5 wt. % or less; a negligible small amount of titanium (Ti), tantalate (Ta) and niobium (Nb); and the balance of Ni and inevitable impurities.
摘要:
The invention relates to a powdermetallurgically produced valve seat ring having a carrier layer and a function layer. It is the objective of the invention to provide a valve seat ring of the kind mentioned above that offers significantly higher thermal conductivity properties. To achieve this objective and based on a valve seat ring of the kind first mentioned above the invention proposes that the carrier material of the carrier layer has a thermal conductivity higher than 55 W/m*K at a total copper content ranging between >25 and 40% w/w.
摘要:
A thermoelastic device comprising an expansive element is disclosed. The expansive element is formed from a material, which is preselected by calculating a dimensionless constant for the material. The dimensionless constant is indicative of the potential effectiveness of the material in a particular application, such as a micro-electromechanical system.
摘要:
A thermoelastic device comprising an expansive element is disclosed. The expansive element is formed from a material, which is preselected by calculating a dimensionless constant for the material. The dimensionless constant is indicative of the potential effectiveness of the material in a particular application, such as a micro-electromechanical system.
摘要:
A Stirling engine has a housing containing a displacer and a power piston arranged to reciprocate relatively to one another. A head is adjacent to the displacer to absorb heat, and is surrounded by a block of copper or aluminum. A substantial proportion of the block is clad with a layer of stainless steel or Inconel having a thickness of between 3 mm and 0.15 mm.
摘要:
The invention relates to a reciprocating piston composed of ceramic material for a reciprocating-piston engine with crank drive, wherein the reciprocating piston is rigidly screwed to a piston rod by a screw, wherein between the reciprocating piston and the piston rod there is braced at least one disc composed of metallic material, wherein the screw is composed of a metallic material, wherein the coefficient of thermal expansion αpiston of the material of the reciprocating piston is lower than the coefficient of thermal expansion αscrew of the material of the screw, and the disc is an expansion compensation disc, wherein the coefficient of thermal expansion αDisc 1;2 of the material of the expansion compensation disc is greater than the coefficient of thermal expansion αscrew of the material of the screw, and to a reciprocating-piston engine having a reciprocating piston of said type, and to a cylinder of a reciprocating-piston engine having a cylinder of said type.
摘要:
The present invention provides a porous polymer resin layer that comprises a binder resin with pores having a mean maximum diameter of about 0.5 mm to 1.6 mm; and aerogels dispersed in the binder resin. In particular, the porous polymer resin layer has a density of about 0.5 g/ml to 1.6 g/ml.
摘要:
A synthetic resin bearing and a scroll compressor using the same are provided. In the synthetic resin bearing as a journal bearing fixed to an orbiting scroll or a main frame and relatively rotated with respect to a rotational shaft in a scroll compressor, the journal bearing is made of a PEEK material, and a thickness t of the journal bearing is smaller than a thickness t1 with which a temperature in a contact surface thereof with the rotational shaft during an operation of the scroll compressor corresponds to a glass transition temperature.
摘要:
A thermoelastic device comprising an expansive element is disclosed. The expansive element is formed from a material, which is preselected on the basis that it has one or more of the following properties: a resistivity between 0.1 μΩm and 10.0 μΩm; chemically inert in air; chemically inert in the chosen ink; and depositable by CVD, sputtering or other thin film deposition technique.