| 摘要 |
<p>The present invention relates to pumping machine or compressor for respectively pumping or compressing a fluid, such as air, gases or liquids. The unit comprises a cylinder wherein two pistons are arranged, the pistons reciprocate in the cylinder and are connected with two crankshafts driven by at least one motor, and where the cylinder further is equipped with a suction valve and a discharge valve, that the pistons are configured in such way that they moves away from each other for suction of the fluid and then moves towards each other for compressing the fluid, the suction and discharge valves are arranged in the mid-part of the cylinder between the two pistons. , According to the invention, means are provided for regulating and locking the synchronous angle at least on one of the crankshaft up to 180° with respect to the other, and that said means provides for regulation of dead volume, pressure, rotational speed and capacity.</p> |
