A structure of a double-motor-driven double-rolling piston compressor and its control method
A dual-motor-driven, rolling-piston technology, applied to machines/engines, pump combinations for elastic fluid rotary pistons/oscillating pistons, mechanical equipment, etc., can solve problems such as stepless adjustment and inability to effectively achieve pressure ratios , to achieve the effect of infinitely variable flow
Active Publication Date: 2020-05-22
XI AN JIAOTONG UNIV
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Problems solved by technology
Although the problem of small pressure ratio has been solved by double-cylinder rolling piston compressors in the prior art, since there is only one motor drive, it cannot effectively realize the stepless adjustment of pressure ratio
Method used
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Embodiment Construction
[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] see figure 1 , the present invention is modified on the basis of the traditional two-cylinder two-stage rolling piston compressor. The original structure is driven by a motor to drive a main shaft to drive the double rolling pistons to move in the double cylinder. Drive the rolling piston movement. The specific structure is as follows: two motors 1 respectively drive two main shafts 3 through couplings 2 to drive two rolling rotors 5 to move in two cylinders 4 to complete the suction, compression and exhaust processes respectively.
[0024] The two motors are arranged oppositely in a vertical position, which saves the occupied area.
[0025] see figure 2 , in the internal pipeline layout of the compressor of the present invention, the intake pipe 9 is respectively connected to the suction port 6 of the first-stage cylinder, connected to the suction...
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The invention discloses a double-motor driven double-rolling piston compressor structure and a control method thereof; the compressor structure comprises two cylinders which are independently driven by two motors, wherein a suction orifice of the first-stage cylinder is directly connected with an air intake pipeline; an exhaust orifice of the first-stage cylinder is connected with an exhaust pipeline through a first electromagnetic valve; the suction orifice of the second-stage cylinder is connected with the air intake pipeline through a third electromagnetic valve; a second electromagnetic valve is arranged between the exhaust orifice of the first-stage cylinder and the suction orifice of the second-stage cylinder; the exhaust orifice of the second-stage cylinder is directly connected with the exhaust pipeline; the two motors are connected with an inverter for controlling the rotating speed, and the electromagnetic valves are connected with a controller. By selectively controlling theseries and parallel connection of the two cylinders autonomously, the large pressure ratio is achieved in series connection, and the large flow rate is achieved in parallel connection. The two motorscan be controlled by a frequency converter to achieve the frequency conversion, and the stepless variable flow and the voltage ratio regulation are implemented.
Description
technical field [0001] The invention belongs to the structural design field of rolling piston compressors, and in particular relates to a double motor driven double rolling piston compressor structure and a control method thereof, which can realize two-stage compression in series and one-stage compression with large flow in parallel. Background technique [0002] The rolling piston compressor, also known as the rolling rotor compressor, is a type of positive displacement compressor, relying on the rolling piston installed in the cylinder to perform rotary motion in the cylinder and a sliding plate in contact with the rolling piston to perform reciprocating motion to achieve gas compression . [0003] The internal basic structure of the rolling piston compressor includes a cylinder, a rolling rotor, a sliding vane, and an exhaust valve. Its basic working process is: a crescent-shaped space is formed between the outer surface of the rotor and the inner surface of the cylinder,...
Claims
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IPC IPC(8): F04C23/02F04C28/02F04C28/08F04C28/24F04C28/28
Inventor 何志龙韩耀祥杨显照吴伟烽邢子文
Owner XI AN JIAOTONG UNIV