Power generating device

Abstract

In a scroll compressor, a revolution scroll lap 1 a stands on one of surfaces of a revolution lap support disk 1 b of a revolution scroll member 1, and a revolution disk 2 is connected to the other surface. The revolution disk 2 is formed at its center with a revolution shaft support hole 2 b into which an eccentric shaft 4 a is to be inserted. An outer periphery of the revolution shaft support hole 2 b is formed with a crankshaft support hole 2 a into which an eccentric shaft 5 e is to be inserted. The eccentric shaft 5 e restrains the rotation of the revolution scroll member 1. The revolution scroll lap 1 a and the revolution lap support disk 1 b are integrally formed of synthetic resin. The revolution disk 2 is made of metal. The revolution shaft support hole 2 b and the crankshaft support hole 2 a are integrally formed together. With this configuration, the thermal deformation of revolution scroll member 1 is suppressed, and wear and mechanical loss caused by contact between laps are prevented.

1 . An electric power generator using a scroll compressor as an air compressor for supplying oxygen to a fuel cell, wherein in a revolution scroll member constituting said scroll compressor, a revolution scroll lap stands on one of surfaces of a revolution lap support disk, a revolution disk is connected to the other surface of said revolution lap support disk, said revolution disk is formed at its center with a revolution shaft support hole into which an eccentric shaft on an end of a drive shaft is to be inserted, an outer periphery of said revolution shaft support hole of said revolution disk is formed with a plurality of crankshaft support holes into which eccentric shafts of crankshafts which restrain rotation of said revolution scroll member are to be inserted, said revolution lap support disk and said revolution scroll lap are integrally formed of synthetic resin, said revolution disk is made of metal, said revolution shaft support hole and said crankshaft support hole are integrally formed together.  
   
   
       2 . An electric power generator using a scroll compressor as an air compressor for supplying oxygen to a fuel cell, wherein said scroll compressor comprises a fixed scroll member having a fixed scroll lap standing on one of surfaces of a fixed lap support disk, a revolution scroll member having a revolution scroll lap standing on one surface of a revolution lap support disk, a drive shaft for transmitting a driving force to said revolution scroll member, a crankshaft for restraining rotation of said revolution scroll member, and a revolution support plate for holding said drive shaft through a bearing and for holding one of eccentric shafts of said crankshaft through said bearing, said fixed scroll member and a first casing which covers an outer periphery of said fixed scroll lap are integrally formed of synthetic resin, 
 said revolution support plate and a second casing connected to said first casing are integrally formed of metal, a revolution disk made of metal is connected to the other surface of said revolution lap support disk, said revolution disk pivotally supports an eccentric shaft on an end of said drive shaft, and pivotally supports the other eccentric shaft of said crankshaft.    
   
   
       3 . The electric power generator according to  claim 2 , wherein a plurality of ball bearings are provided on eccentric shafts on opposite ends of said crankshaft, said ball bearings are assembled such that surface pressures are previously applied between their rolling elements and races.  
   
   
       4 . The electric power generator according to  claim 2  or  3 , wherein a gap is provided between a tip end of said fixed scroll lap and said revolution lap support disk, and a gap is provided between a tip end of said revolution scroll lap and said fixed lap support disk.  
   
   
       5 . The electric power generator according to  claim 4 , wherein a size of said gap is 0.03 to 0.1 mm.  
   
   
       6 . The electric power generator according to  claim 2  or  3 , wherein a gap is provided between said fixed scroll lap and said revolution scroll lap.  
   
   
       7 . The electric power generator according to  claim 6 , wherein a size of said gap is 0.05 to 0.3 mm.  
   
   
       8 . The electric power generator according to any one of  claims 1  to  3 , wherein said revolution lap support disk and said revolution disk are connected to each other by fasting a bolt from said revolution lap support disk.  
   
   
       9 . The electric power generator according to any one of  claims 1  to  3 , wherein said revolution lap support disk and said revolution disk are connected to each other by fasting a rivet from said revolution lap support disk.  
   
   
       10 . The electric power generator according to any one of  claims 1  to  3 , wherein said revolution lap support disk and said revolution disk are connected to each other by melting and deforming a portion of a projection provided on said revolution lap support disk.  
   
   
       11 . The electric power generator according to any one of  claims 1  to  3 , wherein said revolution lap support disk and said revolution disk are connected to each other by embedding a synthetic resin into holes formed in said revolution lap support disk and said revolution disk and by melting and deforming the synthetic resin.  
   
   
       12 . The electric power generator according to any one of  claims 1  to  3 , wherein said revolution scroll member or said fixed scroll member is formed by injection molding.