| abstract |
The present invention provides a fluid supply pipe capable of imparting predetermined flow characteristics to the fluid, thereby improving the lubricity, permeability, and cooling effect of the fluid. The fluid supply pipe includes an internal structure and a pipe main body for accommodating the internal structure. The pipe body has a circular cross-section, and includes an inflow port and an outflow port. The internal structure includes: a first part. When the internal structure is housed in the pipe main body, the first part is located on the side of the inflow port of the pipe main body and diffuses the fluid flowing in through the inflow port from the center of the pipe in the radial direction ; The second part, which is located on the downstream side than the first part, includes forming a plurality of spiral wings so that the vortex flow is generated in the fluid diffused by the first part; and the third part, which It is located further downstream than the second part, and has a plurality of protrusions on the outer peripheral surface. |