Oil supply structure for refrigerant compressor

Abstract

An oil supply structure for a refrigerant compressor is connected to a main shaft of the refrigerant compressor. The oil supply structure has a concave recessed from a periphery to a center, an oil hole penetrating the center of the concave and in communication with an oil supply passage of the main shaft, and at least one blade protruding from the concave and extending from the periphery towards the oil-hole. A rotation direction of the blade is opposite to a rotation direction of the main shaft. Through a simple structure in a form of an impeller, the oil supply structure can generate the function of a centrifugal pump by the concave and the blade during rotation, so as to change the supply of a lubricating oil according to changes in the rotation rate.

1 . An oil supply structure for a refrigerant compressor, connected to one end of a main shaft of the refrigerant compressor extending to an oil tank, comprising:
 a concave, formed on one end opposite to the main shaft, and recessed from a periphery to a center;   an oil hole, penetrating the oil supply structure from the center of the concave, and in communication with an oil supply passage of the main shaft; and   at least one blade, protruding from the concave, and extending from the periphery towards the oil hole, wherein a rotation direction of the blade is opposite to a rotation direction of the main shaft.   
     
     
         2 . The oil supply structure for a refrigerant compressor according to  claim 1 , wherein the oil supply structure is integrated with the main shaft to form a unity and is directly molded on one end of the main shaft. 
     
     
         3 . The oil supply structure for a refrigerant compressor according to  claim 2 , wherein the oil supply structure is directly molded on one end of the main shaft. 
     
     
         4 . The oil supply structure for a refrigerant compressor according to  claim 1 , wherein the oil supply structure is an impeller, the impeller has a main body, the main body is slightly in a horn shape and has a columnar end and an expanded end, the columnar end is used to be combined with the oil supply passage of the main shaft, the concave is formed on the expanded end, the oil hole penetrates the main body, and the blade protrudes from the concave. 
     
     
         5 . The oil supply structure for a refrigerant compressor according to  claim 4 , wherein the columnar end and the oil supply passage of the main shaft are configured to be assembled together, so as to enable the impeller to be directly combined with the oil supply passage of the main shaft. 
     
     
         6 . The oil supply structure for a refrigerant compressor according to  claim 1 , wherein the refrigerant compressor is transversely disposed, and an oil collector is sleeved on an outer edge of the oil supply structure, so as to suck the lubricating oil. 
     
     
         7 . The oil supply structure for a refrigerant compressor according to  claim 6 , wherein the oil collector has a main body having a hollow chamber, the main body has an oil suction pipe extending downwards therefrom, and the oil suction pipe extends into the lubricating oil of the oil tank of the refrigerant compressor.