A crankshaft for a refrigeration compressor
A crankshaft and viscous technology, which is applied in the field of crankshafts of refrigeration compressors, can solve problems such as harsh working conditions and crankshaft roughening, and achieve the effects of reducing roughening, avoiding liquid hammering of valve plates, and improving reliability
Active Publication Date: 2018-01-02
JIAXIPERA COMPRESSOR
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- Abstract
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- Application Information
AI Technical Summary
Problems solved by technology
Due to the support between the crankshaft and the crankcase, the torque is transmitted to the crankshaft near the lower oil hole), the working conditions are relatively harsh, and the position opposite the lower oil hole is prone to failure of the crankshaft due to insufficient lubrication
Method used
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Embodiment Construction
[0016] like figure 1 As shown, the refrigerating compressor adopting the crankshaft of the present invention includes an airtight casing 01, a piston-cylinder unit 02, a crankshaft-connecting rod mechanism 03 and a motor unit 04, and the casing 01 is provided with a suction pipe 11 and an exhaust pipe 12, The refrigerant enters the piston-cylinder unit 02 through the suction pipe 11, and the motor unit 04 drives the crankshaft-connecting rod mechanism 03, which drives the piston-cylinder unit 02 to reciprocate to compress the refrigerant, and is discharged from the compressor housing 01 through the exhaust pipe 12 .
[0017] like figure 2 As shown, the crankshaft 05 of the present invention is assembled with the crankcase 06. Please also see image 3 As shown, the crankshaft 05 includes a centrifugal pump 07 and a viscous pump 08. The centrifugal pump 07 includes an oil suction pipe 71 and an oil chamber 72. The oil suction pipe 71 and the oil chamber 72 are assembled in a...
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The invention discloses a crankshaft used for a refrigerating compressor. The crankshaft comprises a centrifugal pump and a viscosity pump. The centrifugal pump comprises an oil cavity and an oil suction pipe or an eccentric oil cavity. An oil groove is formed in the outer surface of the viscosity pump, and an upper oil hole and a lower oil hole are formed in the starting point and the finishing point of the oil groove respectively. The diameter of a non-machining area in the middle of the crankshaft is smaller than the diameter of a machining area on the upper side and the diameter of a machining area on the lower side of the crankshaft, and an oil storage space is formed. An oil supplement groove is formed in the crankshaft, an opening of the oil supplement groove is located in the non-machining area, and the oil supplement groove extends downwards along the machining areas. An oil way of the crankshaft is designed again, local lubrication of an abrasion area of the crankshaft is enhanced, the oil way is more reasonable in structure, enough oil can be provided for the part, located in the severe surrounding environment, of the crankshaft of the compressor, lubrication between kinematic pairs is guaranteed, the fault that galling is caused because local lubrication of a position near the lower oil hole of the crankshaft is insufficient is reduced, and reliability of the compressor is improved.
Description
technical field [0001] The invention relates to the technical field of refrigeration compression, in particular to a crankshaft for a refrigeration compressor. Background technique [0002] The refrigeration compressor is usually arranged at the bottom of the rear side of the refrigerator, and its function is to compress and transport the circulating refrigerant in the refrigerator system, thereby transferring heat from the interior of the refrigerator to the surrounding environment. When the refrigerator compressor is running, the motor drives the crankshaft-connecting rod movement mechanism, and then drives the piston-cylinder unit to compress the refrigerant. The crankshaft is an important part of the crankshaft-connecting rod movement mechanism of the compressor. It has the function of pumping oil. On the one hand, it can lubricate the crankshaft-connecting rod-piston movement mechanism to prevent the movement mechanism from being stuck; on the other hand, it can cool th...
Claims
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IPC IPC(8): F04B39/00F04B39/02
CPCF04B39/0094F04B39/0261
Inventor 陈鹏伟钱建忠王宗槐
Owner JIAXIPERA COMPRESSOR