Driving mechanism and scroll compressor

Abstract

The invention discloses a driving mechanism. The driving mechanism comprises a shell seat, a first rotating wheel, a second rotating wheel, an electromagnetic clutch, a crankshaft and a driving disc.The first rotating wheel and the second rotating wheel are both arranged on the shell seat, the second rotating wheel is connected to the first rotating wheel, and the diameter of the second rotatingwheel is larger than the diameter of the first rotating wheel. The electromagnetic clutch is arranged on the shell seat and located between the first rotating wheel and the second rotating wheel. Thecrankshaft penetrates the shell seat. The crankshaft is sleeved with the driving disc, and the driving disc is movably connected to the second rotating wheel. The invention further provides a scroll compressor. According to the driving mechanism, by controlling the ratio of the rotating speed of the first rotating wheel to the rotating speed of the compressor to be greater than 2.5, the transmission ratio under the driving condition of a pulley is increased, and the displacement of the compressor is reduced, so that the rated speed under the electric working condition is increased, and the ratio of the cooling capacity under the driving condition of the pulley and the electric driving condition is reduced, so that the situation that the return oil is blocked is eliminated, and it is ensured that the compressor can work normally under both working conditions.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a driving mechanism and a scroll compressor. Background technique [0002] The air-conditioning compressor of a fuel vehicle is driven by the engine-driven pulley to drive the compression mechanism to rotate. However, there is a scenario in a fuel vehicle, that is, when the engine is shut down, there is still a need to use the air conditioner. At this time, the air-conditioning compressor needs to continue to rotate. , usually using a compressor that satisfies the rotation under mechanical transmission and an electric compressor to realize the operation of the compressor driven by electricity when the engine is stopped; there are also hybrid compressors, that is, the same compressor structure can be driven by a pulley It can also be driven by electricity, but the rated speed of the existing double-driven compressor pulley working condition is only a fraction of the maximum ro...

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Problems solved by technology

[0002] The air-conditioning compressor of a fuel vehicle is driven by the engine-driven pulley to drive the compression mechanism to rotate. However, there is a scenario in a fuel vehicle, that is, when the engine is shut down, there is still a need to use the air conditioner. At this time, the air-conditioning compressor needs to continue to rotate. , usually using a compressor that satisfies the rotation under mechanical transmission and an electric compressor to realize the operation of the compressor driven by electricity when the engine is stopped; there are also hybrid compressors, that is, the same compressor structure can be driven by a pulley It can also be driven by electricity, but the rated speed of the existing double-driven compressor pulley working condition is only a fraction of the maximum rotating speed of the electric working condition, usually one-fifth to one-third, and the pulley The rated cooling capacity (at rated speed) of the working condition is several times the minimum rated cooling capacity of the electric working condition, usually 2.5 times to 3.5 times. The pump body that meets the pulley working condition and also meets the electric working condition makes The rated speed under the electric driving condition is low, only a few hundred rpm, and the oil return is prone to be blocked, resulting in the compressor not working normally

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