Refrigerating compressor and refrigerating device using the same

Abstract

A refrigerating compressor includes a hermetic container accommodating oil, a motor accommodated in the container, a compressing unit provided under the motor and driven by the motor, and a vibration insulating wall. The compressing unit has a crankshaft, a cylinder block, a piston, a connecting rod and a feed oil pipe. The vibration insulating wall is placed inside the container at the bottom and surrounds the feed oil pipe with a given distance in between.

1 . A refrigerating compressor comprising:
 (a) a hermetic container accommodating oil;   (b) a motor accommodated in the hermetic container;   (c) a compressing unit disposed under the motor, accommodated in the container, and driven by the motor, the compressing unit including:
 (c-1) a crankshaft having a main shaft and an eccentric section; 
 (c-2) a cylinder block having a bearing for supporting the main shaft rotatably, and a cylinder, 
 (c-3) a piston reciprocating in the cylinder; 
 (c-4) a connecting rod coupling the piston with the eccentric section; 
 (c-5) a feed oil pipe attached to the eccentric section and having an end dipped into the oil; and 
   (d) a vibration insulating wall disposed inside the container at a bottom and surrounding the feed oil pipe with a given distance in between.   
     
     
         2 . The refrigerating compressor according to  claim 1 , wherein the vibration insulating wall is provided with a communicating hole having a diameter smaller than an inner diameter of the feed oil pipe. 
     
     
         3 . The refrigerating compressor according to  claim 2 , wherein an upper end of the vibration insulating wall extends upward and exceeds a surface of the oil. 
     
     
         4 . The refrigerating compressor according to  claim 1 , wherein the vibration insulating wall is formed of vibration damping material. 
     
     
         5 . The refrigerating compressor according to  claim 1 , wherein the feed oil pipe is formed of steel pipe, has a bent section, and is shaped as a V-shape including an obtuse angle. 
     
     
         6 . The refrigerating compressor according to  claim 5 , wherein an upper end of the vibration insulating wall extends upward and exceeds the bent section. 
     
     
         7 . The refrigerating compressor according to  claim 1 , wherein an inner wall of the vibration insulating wall is shaped as a body of revolution. 
     
     
         8 . The refrigerating compressor according to  claim 1 , wherein the oil is one of mineral oil and alkyl benzene, and the compressor compresses hydrocarbon as refrigerant. 
     
     
         9 . A refrigerating device comprising:
 the refrigerating compressor as defined in  claim 1 ;   a heat exchanger on heat radiation side coupled with the refrigerating compressor;   an expansion valve coupled with the heat exchanger on heat radiation; and   a heat exchanger on heat absorption side coupled with the expansion valve for running refrigerant having undergone heat-absorption to the refrigerating compressor.   
     
     
         10 . The refrigerating device according to  claim 9 , wherein the refrigerant is hydrocarbon, and the oil is one of mineral oil and alkyl benzene.