Oil-Cooling Tube

Abstract

An oil-cooling tube comprises a set of aluminum-alloy hollow inner and outer tubes with a heat sink having multiple heat-dissipating pores disposed thereon laminated there-between. Via tube-expanding process, the inner tube is integrally bonded with the outer tube and the heat sink to form a lighter-weight oil cooling tube. Aluminum-alloy screw seats can have welding-joint portions respectively brazed to bores drilled at upper end sections of the outer tube to communicate hollow coupling ends with the bores, forming a set of oil-inlet and oil-outlet vents to which a set of oil-inlet and oil-outlet ducts are fluidly connected. The end caps, having ringed sections to be brazed to the conjoining end edges of the inner and outer tubes, can seal and enclose the inner and outer tubes to form an oil-reflux circuit therein, completing the oil-cooling tube with heat-dissipating capability to reduce the processing steps and the cost of material thereby.

1 . An oil-cooling tube, comprising a set of inner and outer tubes molded of aluminum alloy, between which a heat sink having multiple heat-dissipating pores disposed thereon is laminated wherein, via tube-expanding process of the inner tube, the inner and outer tubes are integrally bonded with the heat sink together to form a lighter-weight oil cooling tube; multiple aluminum-alloy screw seats and aluminum-alloy end caps are respectively processed wherein the screw seats, each composed of a welding-joint portion disposed at the bottom and a protrusive hollow coupling end, can have the welding-joint portions respectively welded to bores drilled at the upper end sections of the outer tube to connect the hollow coupling end of the screw seats with the bores thereof, forming a set of oil-inlet and oil-outlet vents to which a set of oil-inlet and oil-outlet ducts are fluidly connected thereby; the end caps, each equipped with a ringed section to be welding-joined to the conjoining sections disposed at both outer end edges of the inner and outer tubes thereby, can seal and enclose the conjoining end edges of the inner and outer tubes to form an oil-reflux circuit therein, completing the manufacturing of the oil-cooling tube with the capability of heat dissipation wherein the oil-cooling tube is shortened in the processing steps and reduced in the cost of materials, benefiting the engine oil inside a transmission to achieve the best heat-dissipating effect thereby. 
     
     
         2 . The oil-cooling tube as claimed in  claim 1  wherein the inner and outer tubes can be made of aluminum-alloy tubes that are respectively processed via punching and cutting operation into a hollow cylindrical configuration. 
     
     
         3 . The oil-cooling tube as claimed in  claim 1  wherein the heat sink can be molded of aluminum-alloy roll material. 
     
     
         4 . The oil-cooling tube as claimed in  claim 1  wherein the heat sink with the multiple heat-dissipating pores arranged thereon can have the surface molded into a spiral-type configuration. 
     
     
         5 . The oil-cooling tube as claimed in  claim 1  wherein the screw seat can be made of an aluminum-alloy rod lathed and processed into an inverted T-shaped configuration. 
     
     
         6 . The oil-cooling tube as claimed in  claim 1  wherein the welding-joint portion of the screw seat can be molded into a depression. 
     
     
         7 . The oil-cooling tube as claimed in  claim 1  wherein the coupling end of the screw seat can be molded into a hollow shape with external screw threads defining thereon. 
     
     
         8 . The oil-cooling tube as claimed in  claim 1  wherein the screw seat can have the bottom surface of the welding-joint portion coated with welding aid and, via the process of inert-gas brazing stove, brazed onto the bores disposed at the upper end sections of the outer tube thereon respectively. 
     
     
         9 . The oil-cooling tube as claimed in  claim 1  wherein the end cap can be made of aluminum-alloy roll material punched and processed into a hollow U-shaped configuration thereby. 
     
     
         10 . The oil-cooling tube as claimed in  claim 1  wherein the end cap can have the inner surface of the ringed section coated with welding aid and, via the process of inert-gas brazing stove, brazed onto the conjoining sections disposed at both outer end edges of the inner and outer tubes respectively.