Abstract: The fluid acceleration pipe includes a main body having a pipe cavity and defining a central axis. The whole inner surface of the main body is exposed to the pipe cavity. The main body is formed with at least 3 spiral ribs arranged spacedly along a perimeter direction of the main body. A spiral groove is formed between any two adjacent ones of the spiral ribs. A column-shaped imaginary datum plane is defined by the most bottom portion of each spiral groove about the central axis. A projection of the most top portion of each spiral rib on the imaginary datum plane defines a spiral line. The lead angle of the spiral line is 50 to 60 degrees. The top portion of each spiral rib has a convex-arc-shaped surface, and the bottom portion of each spiral groove has a concave-arc-shaped surface.

Abstract: An energy saving device for accelerated pressurization in an injection molding machine includes a mold needing vapor and cooled water or oil in an injection molding process. The cooled water or oil is provided by a pump, followed by connecting to the mold through a water or oil supply pipeline. The interior of the accelerated pressurization energy saving pipe is a through hole. Three or more spiral grooves are provided on the inner peripheral surface of the through hole and having an angle rotated in a front direction, with the lateral direction of each spiral groove having an inclined angle. The vapor or water or oil enforces angle rotation and inclined angle accelerated pressurization.

Abstract: An energy saving for an air compressor is provided, including an inlet end of an inlet pipe being provided with an air filter, a connection end of the inlet pipe being connected to an inlet side of a compressor, an outlet side of the compressor being provided with an outlet pipe, an outlet end of the outlet pipe being connected to an air reservoir, an air supply side of the air reservoir being provided with an air supply pipe, mainly in that one or more accelerated pressurization pipes may be concatenated on the inlet pipe or outlet pipe or air supply pipe, the interior of the accelerated pressurization pipe is a through hole, the inner peripheral surface of the through hole is provided with several spiral grooves thereon, as an air flows through said accelerated pressurization pipe, the air flow is guided by the several spiral grooves naturally to rotate.

Abstract: A dynamic variable intake tubing includes a dynamic swirl supercharging tube which has a tubular member. The tubular member has a through hole axially penetrated. Flow-guiding grooves which follow a forward helical course or a reverse helical course are disposed on an inner peripheral surface of the through hole. At least a bearing is disposed around an outer circumferential surface of the tubular member to enable the tubular member to rotate freely. Flow-guiding blades are disposed at an intake end of the tubular member for ushering in gas current and guiding the gas current to the flow-guiding grooves. The flow-guiding grooves speed up intake and render combustion complete while an engine is operating at high rotational speed. The dynamic variable intake tubing generates an appropriate back pressure while the engine is operating in low speed, thereby increasing torque output and enhancing the performance of the dynamic swirl twofold to fivefold.