Abstract:
The invention concerns a micro-machined device (10) for fluids comprising a substrate (12) with a flow conduit (14), a thin ductile layer (18) such as a pumping diaphragm or a diaphragm forming a check-valve. The thin layer (18) is a laminated metal sheet, preferably made of titanium and connected to the substrate (12) at the overlapping zone (20) of the flow conduit, by anodic welding. The invention is useful for producing a check-valve.
Abstract:
본 발명은 풍력발전기의 날개에 관한 것으로, 더욱 상세하게는 고리가 형성된 수평축 풍력발전기의 날개에 관한 것이다. 날개에 고리를 형성하여 고리가 모든 날개를 하나로 동결함으로 인하여, 날개의 두께를 얇게 할 수 있어서 날개의 무게가 가볍게 되고, 날개의 폭을 넓게 할 수 있고, 날개의 수를 다수로 할 수 있어서 날개의 효율을 극대화시키고, 날개가 고리에 고정되어 있으므로 태풍 등의 강풍에 부러짐 현상을 방지할 수 있고, 바람이 약한 곳에서도 발전이 용이한 고리 있는 수평축 풍력발전기의 날개에 관한 것으로서, 분할제작 방법으로는 고리를 날개의 수로 나뉘어, 날개 한 개와 나뉜 고리 한 개를 묶어서 용접이나 나사 등으로 동결하거나, 날개 한 개와 나뉜 고리 한 개 묶음을 주조법으로 일체로 형성한다. 마그네슘 합금, 텅스텐 합금 등을 이용하면 가볍고 견고해서 항구적으로 이용 가능한 고리 있는 수평축 풍력발전기 날개에 관한 것이다.
Abstract:
The invention concerns a micro-machined device (10) for fluids comprising a substrate (12) with a flow conduit (14), a thin ductile layer (18) such as a pumping diaphragm or a diaphragm forming a check-valve. The thin layer (18) is a laminated metal sheet, preferably made of titanium and connected to the substrate (12) at the overlapping zone (20) of the flow conduit, by anodic welding. The invention is useful for producing a check-valve.
Abstract:
PURPOSE: A non-seal magnetic driving gear pump is provided to arrange a gasket in the interface between a first housing unit and a housing cover which are joined to each other so that an end clearance between a driving gear rotor and a housing cover is determined by the gasket. CONSTITUTION: A non-seal magnetic driving gear pump includes a first housing unit(10) and a second housing unit which are connected to each other by a connecting casing. A driving gear rotor(40) is arranged inside the first housing unit. An idle gear(50) is arranged inside the driving gear rotor so that the center of the rotation of the idle gear is arranged eccentric from the center of rotation of the driving gear rotor. A bypass hole(16) is punched in a lateral side of an outlet(14) of the first housing. Some of fluid discharging through the outlet is supplied to between a driven magnetic rotor and a canister(90) through the bypass hole so that the driven magnetic rotor is cooled by the fluid. A hollow portion(62) is formed in a first shaft(60) so that the fluid filled with the fluid is discharged to the first housing unit through the hollow portion.