Operation control device for reciprocating compressor
An operation control and compressor technology, applied in the direction of compressors, compressors, output power conversion devices, etc., can solve the problems of increased cost and the overall volume of the operation control device, and achieve the effect of improving efficiency
Active Publication Date: 2021-01-12
LG ELECTRONICS INC
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, with the increase of the switch 40, the cost will gradually increase, and there is also a problem that the increase of the passive components as the switch 40 will increase the overall size of the operation control device.
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[0053]Hereinafter, the objects, features, and advantages described above will be described in detail with reference to the accompanying drawings, and those skilled in the art to which the present invention belongs can easily implement the technical ideas of the present invention through this description. In the description of the present invention, when it is judged that the detailed description of the related known technology may make the gist of the embodiments disclosed in this specification unclear, the detailed description thereof will be omitted. Hereinafter, the limits of the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or similar constituent elements.
[0054]Hereinafter, when it is described that a certain constituent element is "connected", "coupled" or "connected" to another constituent element, it should be understood that the constituent...
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The invention provides an operation control device of a reciprocating compressor; a switch part is omitted from a driving part included in the operation control device of the reciprocating compressor,and a three-phase inverter (IPM) is utilized, so that the reciprocating compressor with a two-stage winding separation type motor can be switched into a three-stage operation mode. An operation control device for a reciprocating compressor operates in accordance with a change in load, the operation control device comprising: a detection unit that measures torque, rotational speed, counter electromotive force, and current applied to a motor of the reciprocating compressor; a control unit for deriving a mode conversion time point using the detected torque, rotational speed, counter electromotive force, and current of the motor, and outputting a control signal for changing the turn ratio of the motor; and a drive unit that changes the number-of-turns ratio of the motor on the basis of the control signal, thereby switching between at least two operation modes and operating the reciprocating compressor.
Description
Technical field[0001]The present invention relates to an Apparatus for Driving Control of Reciprocating Compressor (Apparatus for Driving Control of Reciprocating Compressor) that operates in response to changes in load.Background technique[0002]Generally, in a reciprocating compressor (Reciprocating Compressor), when a piston reciprocates linearly inside a cylinder, it sucks in and compresses refrigerant gas and then discharges it. More specifically, the reciprocating compressor can be divided into a reciprocating (Recipro) method and a linear (Linear) method according to the method of driving the piston.[0003]The reciprocating method is a method in which a crank shaft is coupled to a rotary motor, and a piston is coupled to the crankshaft, thereby converting the rotational force of the rotary motor into linear reciprocating motion. In contrast, the linear method is a method in which the piston is directly connected to the mover of a linear motor, and the piston is reciprocated by ...
Claims
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IPC IPC(8): F04B49/06H02P25/18H02P27/06
CPCF04B49/06H02P25/18H02P27/06F04B35/045F04B49/20F04B2203/0201F04B2203/0202F04B2203/0207F04B2203/0209F25B1/02F25B2600/021F25B2600/024F25B2700/151F25B2700/21153H02P6/085Y02B30/70H02M7/5387F05B2210/14F05B2270/337F05B2270/1016F05B2270/502F25B31/023F25B49/022F25B2313/029H02P7/00
Inventor 金长植崔大祜
Owner LG ELECTRONICS INC