2results about How to "Low weight cost" patented technology

This invention provides an induction motor and a scroll compressor, relating to the design and manufacturing of scroll compressors. The induction motor includes a stator core and a rotor core. Multiple turns of circular enameled wire and insulating paper are placed in the first conductor slot of the stator core. The circular enameled wire is composed of insulating enamel, copper, and aluminum. Cast aluminum is placed in the second conductor slot of the rotor core. This invention increases motor efficiency and reduces cost by limiting the relationships between Kq, Ks, Kf, and Kd to 10.216 ≤ [Kf×(1-Kd)+Kq×Ks] / (Kf×Kd) ≤ 16.844. Furthermore, by imposing dimensional constraints on the first conductor slot, the second conductor slot, and the heat dissipation slot, motor efficiency is further increased and motor cost reduced.

The invention belongs to the technical field of aircraft heat management, and particularly relates to an active flow control stamping heat dissipation system which comprises an S-shaped air inlet flow channel, a heat exchanger, a heat exchanger outlet injection nozzle, a heat exchanger outlet flow channel and a heat exchanger outlet flow channel grating. An inlet of the S-bent air inlet channel protrudes out of the surface of an airplane, and is responsible for introducing ram air flow into the heat exchanger from an outlet after passing through the S-bent air inlet channel and cooling fluid on the hot side of the heat exchanger as a cold source on the cold side of the heat exchanger. According to heat exchanger outlet flow data obtained through flow calculation, a set of injection spray pipes are arranged on the side, with the low flow speed, of the outlet, and high-pressure gas led out of an engine or an auxiliary power device gas compressor is sprayed out of a nozzle after being conveyed through a connecting pipeline and mixed with cold edge air at the outlet of the heat exchanger; the air is discharged out of the machine through the grid at the outlet of the exhaust runner; due to the injection effect of the high-pressure airflow, the high-pressure airflow sprayed out of the injection spray pipe can accelerate cold-side air at an outlet of the heat exchanger, so that the cold-side flow of the heat exchanger is increased, and the overall heat dissipation performance of the heat exchanger is improved. The invention can effectively solve the problems of non-uniform inlet pressure and insufficient flow of the heat exchanger in the existing stamping heat dissipation system.