Air inlet passage and impeller gap adjusting structure

Abstract

The invention discloses an air inlet passage and impeller gap adjusting structure. The structure comprises a volute, an air inlet passage, an impeller, a displacement sensor, a servo screw motor and anut, wherein the air inlet passage is arranged in an inner hole of the volute, a certain gap is kept between the air inlet passage and the impeller, the air inlet passage is coaxial with the volute and the impeller, the displacement sensor is arranged in the air inlet passage, the nut is arranged on the air inlet passage, the servo screw motor is arranged on the upper end face of the volute, andthe outer end of a screw of the servo screw motor is connected with the nut. According to the structure, the motor forward and reversely rotates to drive the nut to ascend or descend, the nut drives the air inlet passage to ascend or descend, the ascending gap of the air inlet passage becomes large, and the descending gap of the air inlet passage becomes small, so that the air inlet amount is controlled, the surge of a system is controlled, and the structure is simple and effective.

Description

technical field [0001] The invention belongs to a magnetic levitation air compressor, a blower, and a refrigeration compressor, and in particular relates to a structure for adjusting the gap between an air intake channel and an impeller. Background technique [0002] The size of the gap between the inlet duct and the impeller blades affects the amount of air intake of the impeller. The larger the gap, the larger the leakage, and the smaller the gap, the smaller the leakage. It is a simple and effective method to reduce the gap between the intake passage and the impeller, increase the intake air volume, and control the surge when surge occurs. [0003] The utility model patent with the notification number CN208816405U discloses a structure for adjusting the gap between the air inlet and the impeller in the magnetic levitation blower, including a body, the body is rectangular, and the bottom of the body is bent at 90° and formed The platform-shaped adjustment part is U-shaped...

AI Technical Summary

Problems solved by technology

However, it is not easy to measure the gap between the inlet port and the vane by adding an adjusting gasket to adjust the gap between the inlet port and the blade, and the gap cannot be adjusted during use.

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