Operatio control method of reciprocating compressor

An operation control, reciprocating technology, used in pump control, liquid variable capacity machinery, mechanical equipment, etc., can solve the problems of different resonance and reduced efficiency.

Inactive Publication Date: 2003-10-01
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0054] However, this solution has a problem that the resonance at rated load is different from that of a reciprocating compressor, resulting in a problem of reduced efficiency at rated load

Method used

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  • Operatio control method of reciprocating compressor
  • Operatio control method of reciprocating compressor
  • Operatio control method of reciprocating compressor

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Embodiment Construction

[0068] Detailed description of the preferred embodiment

[0069] Reference will now be made in detail to the preferred embodiments of the invention and examples illustrated in the accompanying drawings.

[0070] The reciprocating compressor driven by the inverter using the present invention is characterized in that when the load increases to more than a predetermined reference load during driving of the reciprocating compressor, the driving frequency of the current operation is increased to a certain level higher than the resonance frequency to move Reciprocating compressors, such that the magnetic flux generated by the current acting on the reciprocating compressor and the magnetic flux generated by the magnet cancel each other out, so that the reciprocating compressor can be driven even when it is overloaded.

[0071] Referring now to the accompanying drawings, the operation and effect of the operation control method of the reciprocating compressor of the present invention w...

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Abstract

The invention discloses an operation control method of a reciprocating compressor. When the motor is overloaded, the operating frequency is increased so that the magnetic flux generated by the magnet and the input current cancels each other, so that the reciprocating compressor can operate under the overload condition. Stable operation. For this, when the reciprocating compressor using the inverter is operated at a rated frequency, the current load of the motor is measured, and the measured load is compared with a predetermined reference load. By comparison, if the measured load is greater than the reference load, it is determined as overload, and the operating frequency is increased to a certain value higher than the oscillation frequency to perform overload operation. In order to compensate for stroke reduction caused by increasing the operating frequency by a certain value, the voltage applied to the motor is increased to a certain level according to the increased operating frequency, thereby performing an overload operation.

Description

technical field [0001] The present invention relates to a reciprocating compressor, in particular to an operation control method of the reciprocating compressor, which can stably drive the compressor when the motor is overloaded. Background technique [0002] In general, a reciprocating compressor is a device that variably controls cooling capacity released therefrom by changing a compression ratio according to an applied stroke voltage. [0003] Now, refer to figure 1 to describe a typical reciprocating compressor. [0004] figure 1 It is a structural block diagram of an operation control device of a general reciprocating compressor. [0005] Such as figure 1 As shown, the operation control device of a common reciprocating compressor includes: a reciprocating compressor (R.COMP) 12, which is used to receive the stroke supplied to the internal motor (not shown) according to the stroke reference value set by the user voltage, so as to control the vertical movement of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/00F04B35/04F04B49/06
CPCF04B35/045F04B49/065F04B2203/0404F04B49/00
Inventor 权启示李爀金炯镇
Owner LG ELECTRONICS INC
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