Multi-rotor compressor and refrigeration equipment

By combining a multi-rotor compressor design with magnetic levitation bearings, the problems of flow pulsation and vibration in rolling rotor compressors are solved, achieving efficient and quiet refrigeration, suitable for refrigeration equipment such as refrigerators and air conditioners.

CN122014610APending Publication Date: 2026-05-12ICCOLD REFRIGERATION EQUIP LTD +1
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Patent Information

Application Number
CN202610485317.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-14
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing rotary compressors in the refrigeration industry suffer from significant problems such as flow pulsation, noise, vibration, and friction loss, leading to low efficiency and shortened equipment lifespan.

Method used

The multi-rotor compressor design utilizes a triangular rotor and a sealed compression chamber to form three independent working air chambers. Combined with magnetic levitation bearings, especially the Heilbeck array structure of radial and axial magnetic levitation bearings, it achieves contactless levitation and stable support of the rotor.

Benefits of technology

It achieves a continuous compression process, reduces airflow pulsation noise, improves compression efficiency and power density, and reduces mechanical vibration and friction, making it suitable for quiet and efficient refrigeration equipment.

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Abstract

The invention discloses a multi-rotor compressor and refrigeration equipment, and relates to the technical field of liquid variable-capacity compression pumps, the compressor comprises a shell, a crankshaft, rotors and a built-in motor, the crankshaft is mounted in the shell through a magnetic suspension bearing, each rotor is mounted on the crankshaft, and the built-in motor is arranged in the shell and is in transmission connection with the crankshaft; each rotor is of a three-arc structure, and the outer contour line of each rotor is composed of three identical protruding arc faces and three sealing vertexes. A sealed compression cavity is arranged in the shell, and each rotor is eccentrically arranged in the sealed compression cavity; the rotors are uniformly distributed on the circumference around the central axis of the crankshaft; the crankshaft rotates to drive all the sealing vertexes to be in dynamic contact with the inner wall of the sealing compression cavity all the time, and three independent working air cavities with the volume changing periodically are formed between the three protruding cambered surfaces and the inner wall of the sealing compression cavity. According to the compressor, pulsation noise can be greatly reduced, the compression efficiency is improved, and the efficient, energy-saving and ultra-silence effects are achieved.
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