Variable displacement control-type piston compressor

JP2022174018A5Inactive Publication Date: 2025-02-07HOERBIGER WIEN GMBH
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Patent Information

Application Number
JP2022076902
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2021-05-10
Filing Date
2022-05-09
Publication Date
2025-02-07
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing piston compressors face challenges in achieving precise and rapid feed rate adaptation, particularly in large compressors, due to slow actuation mechanisms of connecting valves, leading to limited control over the amount of gas fed.

Method used

The use of an automatic ring valve with an electrically actuatable actuator and a lift gripper allows the connection valve to open and close based on pressure ratios, enabling rapid and precise control of the feed rate within one compression cycle, facilitated by electromagnetic or electrohydraulic actuators.

Benefits of technology

This configuration enables precise and rapid adjustment of the feed rate in piston compressors, reducing throttling losses and mechanical stress, allowing for efficient operation even in large compressors with bore diameters up to 800 mm.

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Abstract

To provide an improved stepless displacement control by a connection chamber for a piston compressor, capable of accurately and quickly adapting a feed amount even in a large piston compressor.SOLUTION: In a piston compressor 1 including: a connection chamber 11 connected to a compression chamber 5 via an overflow opening 12; a connection valve 13 for opening and closing the overflow opening 12; and a connection valve control unit 14 for controlling the connection valve, the connection valve is formed as an automatic ring valve which automatically opens and closes the overflow opening according to a pressure ratio between a pressure in the connection chamber and a pressure in the compression chamber. The connection valve opens automatically when the pressure in the connection chamber is larger than the pressure in the compression chamber and is provided with a lift gripper 15 which can be operated by an actuator 17 which can be electrically drive-controlled to hold the connection valve in an open state regardless of the pressure ratio. The electromagnetic actuator can be drive-controlled by the connection valve control unit for operation.SELECTED DRAWING: Figure 1a
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