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Compressor parameter test method and device

A technology for parameter testing and compressors, applied in measurement devices, instruments, etc., can solve problems that have not yet been seen, and achieve the effect of real-time detection

Active Publication Date: 2019-12-17
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] Since the parameters of the equivalent spring stiffness, equivalent damping and natural frequency of the compressor have nonlinear time-varying characteristics during the working process of the compressor, there is no test method for the above parameters in the existing literature.

Method used

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  • Compressor parameter test method and device
  • Compressor parameter test method and device

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Embodiment Construction

[0050]The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0051] In practice, it is found that the linear compressor electromechanical system can be compared to figure 1 The electrical circuit model shown, refer to figure 1 , the energy balance equation formed by the active power and reactive power of the compressor can be expressed as:

[0052]

[0053] Among them, P is the active power input by the power supply, Q is the reactive power input by the power supply, U is the effective value of the voltage, I is the effective value of the current, φ ui is the phase difference between voltage and current, R e is the equivalent resistance of the motor; L e is the equivalent inductance of the motor; K 0 is the electromagnetic fo...

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Abstract

The invention discloses a parameter test method and device of a compressor and relates to the technical field of compressor tests. According to the parameter test method, by use of an electromechanical analogy model of the compressor, nonlinear time varying parameters like equivalent rigidity, equivalent damping and fixed frequency during operation of the compressor are calculated through the energy conservation principle, so the equivalent rigidity, the equivalent damping and the fixed frequency of devices like compressors can be precisely detected in real time, and the method and the device can be used for online monitoring and analysis of operation states of this kind of devices, fault diagnosis, and position judgment and performance analysis of a stop point on a piston.

Description

technical field [0001] The invention relates to the technical field of compressor testing, in particular to a compressor parameter testing method and device. Background technique [0002] The further improvement of energy efficiency standards for new household appliances has made linear compressors with significant energy-saving advantages an important development direction for compressors for small household or commercial refrigeration devices such as refrigerators, freezers, supermarket showcases, air conditioners, and electronic heat dissipation. The linear compressor integrates the linear motor and the piston of the compressor, and the linear motor directly drives the piston to reciprocate, thereby compressing the refrigerant vapor. This driving mode and structure makes the linear compressor save the link of converting the rotary motion to the linear motion compared with the rotary motor, reduces the power consumption of friction loss, improves the mechanical transmissio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 唐明生邹慧明田长青
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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