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A method and a system for protecting a resonant linear compressor

A linear compressor, compressor technology, applied in the components of pumping devices for elastic fluids, liquid variable capacity machinery, mechanical equipment, etc.

Inactive Publication Date: 2017-01-18
EMPRESA BRASILEIRA DE COMPRESSORES SA (EMBRACO)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] Therefore, there is no description in the prior art of a method or a simple and useful system for preventing a resonant linear compressor from operating at a drive frequency having harmonics consistent with the structural resonant frequency of the system

Method used

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  • A method and a system for protecting a resonant linear compressor
  • A method and a system for protecting a resonant linear compressor
  • A method and a system for protecting a resonant linear compressor

Examples

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Embodiment Construction

[0051] figure 1 An embodiment of a resonant linear compressor 14 is shown in which the system and method proposed by the present invention are applied. In some instances, resonant linear compressor 14 will be described as compressor 14 only for better understanding of the drawings.

[0052] Said compressor 14 comprises a piston 1 , a cylinder 2 , a suction valve 3 a and a discharge valve 3 b , and also has a linear actuator comprising a bracket 4 and a magnet 5 actuated by one or more coils 6 .

[0053] The resonant linear compressor 14 also has one or more springs 7a and 7b, which connect the movable part of the compressor 14 (including the piston 1, bracket 4 and magnet 5), the fixed part of the compressor 14 (including the cylinder 2, cover 3, at least one stator 12 to which the coil 6 is fixed) and a fixed structure 13 for all elements required for the correct operation of the compressor 14.

[0054] During operation of the compressor 14, gas enters the cylinder 2 throu...

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PUM

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Abstract

The invention provides a method for protecting a resonant linear compressor (14). The compressor (14) includes structural resonance frequencies (wE) and a motor that is fed by feed voltage (Va) that has amplitude (A) and a drive frequency (wA), both controlled according to the equation A.sin(wt). The protection method is configured so as to include the step of preventing feed to the motor at drive frequencies (wA) that have at least one harmonic coinciding tithe the structural resonance frequency (wE) of the resonant linear compressor (14). A protection system of a resonant linear compressor (14) includes an electronic control (30) configured to prevent feed to the motor at the drive frequencies (wA) that have at least one harmonic coinciding with the structural resonance frequency (wE) of the resonant linear compressor (14).

Description

technical field [0001] The invention relates to a method and system for protecting a resonant linear compressor. More specifically, the present invention relates to a method and system configured to prevent operation of a resonant linear compressor at a given drive frequency having harmonics consistent with the structural resonant frequency of the compressor. Background technique [0002] Alternating piston compressors use the axial movement of the piston to compress the gas in the cylinder, thereby generating pressure. In this respect, the gas that exists outside the cylinder is in the area known as the low pressure side (suction pressure or evaporating pressure) and enters the cylinder through the suction valve where it is then compressed by the piston movement. After the gas has been compressed, it is expelled from the cylinder through the exhaust valve into an area known as the high pressure side (discharge pressure or condensing pressure). [0003] One of the types of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B35/04F04B39/00F04B49/06
CPCF04B35/04F04B39/0088F04B49/06F04B2203/0406F04B35/045F04B39/0027F04B39/023F04B49/065F04B2201/0202F04B2203/0402F04B49/10F04B27/08F04B2201/0806F04B2203/0404F04B39/0005F04B53/10
Inventor D.E.B.里里伊P.S.戴内兹
Owner EMPRESA BRASILEIRA DE COMPRESSORES SA (EMBRACO)
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