High-efficiency and noise-reduction inversion small double-cylinder generator set

Abstract

The invention discloses a high-efficiency and noise-reduction inversion small double-cylinder generator set which comprises an engine with an overhead cam mechanism adopted on a cylinder head, and a generator coaxially connected to one side of the engine. The overhead cam mechanism comprises a cam and a cam shaft used for fixing the cam. The high-efficiency and noise-reduction inversion small double-cylinder generator set is characterized in that a synchronous belt transmission mechanism and an air guide transmission cavity containing the synchronous belt transmission mechanism are arranged onthe side, away from the generator, of the engine, wherein the synchronous belt transmission mechanism is connected with a crankshaft of the engine and the overhead cam mechanism; the synchronous belttransmission mechanism comprises a cam shaft belt wheel fixed to the cam shaft, a crankshaft belt wheel fixed to the crankshaft, and a belt connected with the belt wheels; and a suction type impelleris arranged at the center of the cam shaft belt wheel, and the shell wall of the air guide transmission cavity is provided with an air inlet opposite to the cam shaft belt wheel and an air outlet opposite to the crankshaft belt wheel. By means of the high-efficiency and noise-reduction inversion small double-cylinder generator set, the cooling problem of the synchronous belt transmission mechanism is solved, the high-efficiency and noise-reduction inversion small double-cylinder generator set can work reliably, and therefore noise of the small double-cylinder generator set is controlled and lowered more effectively.

Description

technical field

[0001] The invention relates to a high-efficiency and noise-reducing inverter small-sized double-cylinder generator set. Background technique

[0002] The output frequency of the traditional generator set is synchronous with the speed of the engine, while the inverter generator set rectifies the alternating current generated by the generator into direct current, and then converts it into the required frequency alternating current (usually 50HZ and 60HZ), so the engine speed does not need to be synchronized with the output voltage. From the natural working state of the engine, it can be known that the engine with a smaller single-cylinder displacement has a higher optimal torque point. The best torque point for a 100CC engine is around 4000 rpm, for a 200cc engine around 3500 rpm, and for a 400CC engine around 2500 rpm. We know that the power of an engine is the rotational speed multiplied by the torque. If an engine of about 50CC is used as a 50HZ synchronou...

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