Double-cylinder rotary compressor and crankshaft of same
A rotary compressor and compression mechanism technology, applied in the field of compressors, can solve problems such as unfavorable compressor oil level and oil discharge volume, compressor reliability issues, and increased compressor costs, so as to reduce disturbance and windward area , the effect of reducing quantity and quality and reducing weight
Pending Publication Date: 2020-03-10
GUANGDONG MEIZHI PRECISION MFG
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Problems solved by technology
Using this method can effectively reduce the vibration and noise of the compressor, but it increases the cost of the compressor; and, since the balance weights are installed on different sides of the upper and lower end faces of the motor rotor, the balance weight generated by the compressor during operation The torque will cause the crankshaft to deflect to the side where the upper balance weight is located. The greater the mass of the upper balance weight and the higher the speed of the compressor, the more obvious the deformation of the crankshaft. Due to the deformation of the crankshaft, the contact stress between the crankshaft and the main bearing becomes larger , so that the place where the crankshaft and the main bearing are in contact is easy to wear, which brings reliability problems to the compressor; in addition, this method is also not conducive to the oil level and oil discharge volume of the compressor
Method used
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[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0027] This application is based on the inventor's discovery and recognition of the following facts and problems:
[0028] In the twin-cylinder rotary compressor in the related art, the main moving parts are the crankshaft and the rolling piston nested on the eccentric part of the crankshaft. When the motor of the compressor is powered on, the crankshaft connected with the rotor of the motor drives the piston. The eccentric movement is performed in the compression chamber formed by the cylinder, the baffle and the bearing, so as to reali...
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The invention discloses a double-cylinder rotary compressor and a crankshaft of the same. The double-cylinder rotary compressor comprises a shell, a compression mechanism, the crankshaft and a drivingmechanism, wherein the crankshaft comprises a main shaft as well as an upper eccentric part and a lower eccentric part disposed on the main shaft; an upper piston sleeves the upper eccentric part, and a lower piston sleeves the lower eccentric part; the driving mechanism is disposed inside the shell and is in transmission connection to the main shaft; the mass of the upper eccentric part is larger than the mass of the lower eccentric part; the distance between the mass center of the upper eccentric part and the center axis of the main shaft is larger than the distance between the mass centerof the lower eccentric part and the center axis of the main shaft; and a balance block is disposed on only one end of the driving mechanism. The double-cylinder rotary compressor disclosed by the invention has the beneficial effects that the quantity of the balance block can be reduced; the weight of the left balance blocks can be greatly relieved; cost is low; wear is small; and an oil level andan oil outlet amount are good.
Description
technical field [0001] The invention relates to the technical field of compressors, in particular to a double-cylinder rotary compressor and a crankshaft for the double-cylinder rotary compressor. Background technique [0002] In the twin-cylinder rotary compressor in the related art, a balance block is respectively arranged on the upper end surface and the lower end surface of the rotor, and the moment formed by the upper and lower balance blocks is used to balance the upper eccentric part and the lower eccentric part of the crankshaft and the upper piston and the lower eccentric part. The overturning moment developed by the piston. Using this method can effectively reduce the vibration and noise of the compressor, but it increases the cost of the compressor; and, since the balance weights are installed on different sides of the upper and lower end faces of the motor rotor, the balance weight generated by the compressor during operation The torque will cause the crankshaft...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F04C23/00F04C29/00F04C29/02F04C29/06
CPCF04C23/001F04C29/00F04C29/02F04C29/06F04C2240/807F04C2240/601
Inventor 黄勇郑婷婷
Owner GUANGDONG MEIZHI PRECISION MFG