| abstract |
The present invention provides a fluid supply pipe that can impart predetermined flow characteristics to a fluid, thereby improving the lubricity, permeability, and cooling effect of the fluid. The fluid supply tube includes an internal structure and a tube body for accommodating the internal structure. The tube body has a circular cross section and includes an inflow port and an outflow port. The internal structure includes: the first part, which is located on the inlet side of the tube body when the internal structure is housed in the tube body, and diffuses the fluid flowing in through the inlet from the center of the tube to the radial direction ; Part 2, which is located downstream of Part 1, contains a plurality of spiral-shaped wings to cause the vortex flow to be generated in the fluid diffused by Part 1; and Part 3, which Located on the downstream side of the second portion, it has a plurality of protrusions on the outer peripheral surface. |