Pressure operation control module of coolant recovery device
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United States of America Patent
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Jul 11, 2017
Grant Date -
Apr 20, 2017
app pub date -
Oct 14, 2015
filing date -
Oct 14, 2015
priority date (Note) -
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Abstract
A pressure operation control module is provided for a coolant recovery device and includes a gas path flow division module, two pressure-variable cylinders, a motor, and at least one the control circuit. The gas path flow division module has high-pressure and low-pressure coolant terminals respectively coupled to high-pressure and low-pressure electromagnetic valves and high-pressure and low-pressure sensors for providing connection control and pressure detection of the high-pressure and low-pressure terminals for coolant recovery. The variable-pressure cylinders each have an output terminal connected to an input terminal of the gas path flow division module. The pressure-variable cylinder includes at least one piston/connection rod assembly including a connection portion and a joint portion. The piston/connection rod assembly maintains a linear movement in the pressure-variable cylinder for all angles. The motor is connected to an end of the piston/connection rod assembly of the pressure-variable cylinder to drive the piston/connection rod assembly to linearly move. The control circuit is electrically connected to and controls the opening/closing of the high-pressure and low-pressure electromagnetic valves of the gas path flow division module and the operation of the motor.
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