METHOD OF DISPLACEMENT COMPRESSOR OPERATION Russian patent published in 2015 - IPC F04B39/10 F04B7/00 

FIELD: machine building.

SUBSTANCE: method consists in cyclic alternating decrease and increase of the volume of a working chamber due to travelling of a working member in it. At the volume increase the working chamber is connected to a source and at the decrease - to the customer of working gaseous medium with the help of self-acting suction and discharge valves fitted by movable cut-off elements. During an arbitrarily chosen cycle, period of time is measured from the moment when the working member passes a chosen control point and the moment when the valve starts to open and/or close t_OP. Afterwards during the arbitrarily chosen number of working cycles, forced opening and/or closing of the valve is performed in the period of time t_0t from the moment when the working member passes the chosen control point, according to the formula: t_0t=t_OP-t_IN-t_EL, where t_OP - period of time from the moment when the working member passes a control point and the moment when the valve starts to open and/or close due to the action of pressure difference at a cut-off element, measured in an arbitrarily chosen cycle; t_EL - actuation time of forced valve opening and/or closing mechanism; t_IN - time delay of opening and/or closing of the valve determined by inertia forces influencing the cut-off element.

EFFECT: method allows for almost ideal opening and closing of valves, almost complete elimination of vibrations at their cut-off elements, resulting in reduced losses of mechanical cycle operation in suction and discharge modes.

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