4results about How to "Good oil return effect" patented technology

The present application relates to a kind of oil and fat compositions, the composition contains melanoidin and oil and fat component, the content of melanoidin is 50-1000ppm, preferably 100-1000ppm, relative to the total weight of oil and fat composition;The weight average molecular weight (Mw) of the melanoidin is ≤7kDa, preferably 3k-7kDa;The solid fat content of the oil and fat composition is 16-20% at 20 ℃, preferably 16.5-18%.The oil and fat composition containing melanoidin of the present application can improve the oil penetration and oil return of Chinese style center point, so that the snack becomes more oily, crisp.

The application belongs to the field of aero-engines, and particularly relates to a high sealing reliability aero-engine lubricating oil ventilation system. The thickness of the front and middle oil return stage rotors in the oil return pump set is increased, the oil return capacity of the front and middle oil return stages is increased, the oil return effect of the bearing cavity is improved, and oil leakage is avoided. Controllable ventilation electromagnetic valves are arranged in the ventilation pipelines of the front and middle bearing cavities. When the engine is at a low speed, the front and middle cavities are closed for ventilation. Under the suction of the oil return pump set, the cavity pressure of the front and middle cavities is reduced, the sealing pressure difference is increased, the sealing reliability is improved, and oil leakage of the front and middle cavities is avoided.

The utility model relates to the technical field of compressor precision manufacturing, in particular to a high manganese steel oil baffle seat which comprises an oil baffle seat body, a mounting hole is formed in the middle of the oil baffle seat body, a plurality of connecting columns are annularly arranged on the oil baffle seat body, connecting holes are formed in the connecting columns, and the outer sides of the connecting columns are in a step shape. An oil collecting mechanism is arranged on the surface of the oil baffle seat body, and leaked lubricating oil is collected and flows back through the oil collecting mechanism. The lubricating oil collecting mechanism is arranged to collect lubricating oil and throw the lubricating oil inwards in the flowing direction, so that the lubricating oil flows back and is reused, consumption of the lubricating oil is reduced, the using effect of the lubricating oil is improved, and resources are effectively saved.

The utility model relates to refrigeration equipment technical field especially relates to a kind of high-efficiency shell and tube heat exchanger and refrigerant distribution structure, comprising: heat exchange tube bundle in shell body;Pipe plate that closed shell body end portion;Pipe box is connected to pipe plate, and pipe box is equipped with refrigerant liquid interface;One distribution plate and secondary distribution plate are arranged in pipe box;Primary distribution plate is fixed in the inner end portion of refrigerant liquid interface;Secondary distribution plate covers the tube mouth of heat exchange tube bundle.The scheme has the advantages of improving refrigerant distribution uniformity, avoiding phase separation phenomenon, improving heat exchange efficiency and solving compressor oil return problem.