Simulation design method used for free piston type linear compressor

A linear compressor, simulation design technology, applied in calculation, special data processing applications, instruments, etc., can solve the problem of being separated from the load characteristics of the expander, achieve more targeted design, improve the adoption of simulation, and ensure the progress of research and development. The effect of quality assurance

Inactive Publication Date: 2017-03-15
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to provide a simulation design method of a free-piston linear compressor under a specific gas load to solve the problem that the design of the compressor is separated from the load characteristics of the expander

Method used

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  • Simulation design method used for free piston type linear compressor
  • Simulation design method used for free piston type linear compressor
  • Simulation design method used for free piston type linear compressor

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Embodiment Construction

[0027] Further describe this patent below according to accompanying drawing and embodiment.

[0028] Such as figure 1 As shown, according to the simulation design method of the free-piston linear compressor described in the present invention, a specific expander is designed to match the compressor, and the determination steps of the external load L are as follows:

[0029] The simulation design parameters are piston displacement and piston speed, and it is characterized in that: simulation design comprises the following steps:

[0030] (1), gas damping force F c The calculation expression is:

[0031]

[0032] Among them, the piston area A p is 1E-4π, the pressure amplitude Δp is 0.3MPa, the sine value sinφ of the pressure displacement phase angle is 0.866, and the maximum value of the piston displacement s is X c is 5mm, v is the instantaneous value of the piston speed, and the gas damping force F is calculated c The functional relationship with v is F c =51.96(N·s / m...

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Abstract

The invention discloses a simulation design method used for a free piston type linear compressor. Design input parameters of the method comprises a voltage source and an external load; the external load comprises elastic force and damping force, and the external load are obtained by joint calculation from parameters such as work frequency, piston area, pressure amplitude, a pressure displacement phase angle, piston displacement and a piston speed of the free piston type linear compressor; design output parameters of the method comprises the piston displacement and the piston speed, and the design output parameters become input parameters in next iterative computation by affecting external load computation. The simulation design method used for the free piston type linear compressor has the advantages that a motor design in the free piston type linear compressor and a driving load characteristic can be effectively linked together by adopting a dynamic iterative computation method according to the driving load characteristic of the compressor so as to make pertinence of the motor body design stronger and to improve precise design ability of the compressor.

Description

Technical field: [0001] The invention belongs to the field of regenerative low-temperature refrigerators, and specifically refers to a simulation design method for free-piston linear compressors. Background technique: [0002] The linear oscillating compressor is driven by a linear induction motor, which has the characteristics of high efficiency, compact structure and small volume. There is no radial force or very small radial force in the piston, which greatly reduces the frictional power consumption and wear of the piston. It can be dynamically sealed through the non-contact gas gap, and the compressor has a long operating life and high reliability. The axial stroke of the piston can be freely controlled, which provides greater freedom for the adjustment of the variable capacity of the compressor, and the efficiency is higher than that of the traditional bending rod compressor under variable working conditions. [0003] The electromagnetic and dynamic design of the motor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/367
Inventor 吴亦农邓伟峰蒋珍华赵锐
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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