Embossed plate external oil cooler

Abstract

An oil cooler includes an oil guiding arrangement an oil guiding arrangement and an air guiding arrangement. The oil guiding arrangement has an oil inlet, an oil outlet, and a plurality of oil passageways communicatively between the oil inlet and the outlet and spacedly being stacked apart from each other. The air guiding arrangement has a plurality of air guiding passageways alternating with the oil passageways and arranged for guiding air flowing through the air guiding passageways to heat exchange with the oil so as to cool down the oil before exiting at the oil outlet. A plurality of embossed plates are disposed in the oil passageways respectively for creating a three-dimensional oil movement within the oil passageway to heat exchange with the air, so as to enhance the heat exchange efficiency.

1 . An oil cooler for cooling oil, comprising:
 an oil guiding arrangement having an oil inlet, an oil outlet, and a plurality of oil passageways communicatively between said oil inlet and said outlet for guiding oil longitudinally flowing from said oil inlet to said oil outlet, wherein said oil passageways are spacedly stacked apart from each other;   an air guiding arrangement having a plurality of air guiding passageways alternating with said oil passageways and arranged for guiding air flowing through said air guiding passageways to heat exchange with said oil so as to cool down said oil before exiting at said oil outlet; and   a plurality of embossed plates disposed in said oil passageways respectively, wherein each of said embossed plates has an upper side, a bottom side, and a plurality of guiding elements protruding from said upper and bottom sides in an alternating manner in such a manner that when said oil flow passes through said oil passageway, said oil flow is guided to flow between said upper side and said bottom side, to transversely flow at said embossed plate, and to longitudinally flow at said embossed plate from said oil inlet to said oil outlet, so as to create a three-dimensional oil movement within said oil passageway to heat exchange with said air.   
     
     
         2 . The oil cooler, as recited in  claim 1 , wherein each of said embossed plates has a plurality of longitudinal portions that said guiding elements are alignedly formed along each of said longitudinal portions in a continuously square waveform structure, such that each of said longitudinal portions forms with a wavy longitudinal cross section at said embossed plate. 
     
     
         3 . The oil cooler, as recited in  claim 2 , wherein a waveform of said longitudinal portion is shifted with respect to a waveform of said adjacent longitudinal portion to create a three-dimensional guiding channel for said oil passing through said respective oil passageway. 
     
     
         4 . The oil cooler, as recited in  claim 1 , wherein each of said guiding elements has two opposite transverse openings at each of said upper and bottom sides for guiding said oil flowing at a transverse direction. 
     
     
         5 . The oil cooler, as recited in  claim 2 , wherein each of said guiding elements has two opposite transverse openings at each of said upper and bottom sides for guiding said oil flowing at a transverse direction. 
     
     
         6 . The oil cooler, as recited in  claim 3 , wherein each of said guiding elements has two opposite transverse openings at each of said upper and bottom sides for guiding said oil flowing at a transverse direction. 
     
     
         7 . The oil cooler, as recited in  claim 4 , wherein each of said transverse openings of said guiding element is misaligned with said transverse opening of said adjacent guiding element for ensuring said oil being guided to flow from one transverse opening to another transverse opening in three-dimensional oil movement. 
     
     
         8 . The oil cooler, as recited in  claim 5 , wherein each of said transverse openings of said guiding element is misaligned with said transverse opening of said adjacent guiding element for ensuring said oil being guided to flow from one transverse opening to another transverse opening in three-dimensional oil movement. 
     
     
         9 . The oil cooler, as recited in  claim 6 , wherein each of said transverse openings of said guiding element is misaligned with said transverse opening of said adjacent guiding element for ensuring said oil being guided to flow from one transverse opening to another transverse opening in three-dimensional oil movement. 
     
     
         10 . The oil cooler, as recited in  claim 1 , wherein a height of each of said guiding elements matches with a height of said corresponding oil passageways that crest and trough of each of said guiding elements contact with upper and bottom walls of said oil passageways to ensure said oil flowing in three-dimensional oil movement. 
     
     
         11 . The oil cooler, as recited in  claim 6 , wherein a height of each of said guiding elements matches with a height of said corresponding oil passageways that crest and trough of each of said guiding elements contact with upper and bottom walls of said oil passageways to ensure said oil flowing in three-dimensional oil movement. 
     
     
         12 . The oil cooler, as recited in  claim 9 , wherein a height of each of said guiding elements matches with a height of said corresponding oil passageways that crest and trough of each of said guiding elements contact with upper and bottom walls of said oil passageways to ensure said oil flowing in three-dimensional oil movement. 
     
     
         13 . The oil cooler, as recited in  claim 10 , wherein each of said guiding elements has a trapezoid shape defining a top flat surface at said crest contacting with said upper wall of said oil passageway and a bottom flat surface at said trough contacting with said bottom wall of said oil passageway. 
     
     
         14 . The oil cooler, as recited in  claim 11 , wherein each of said guiding elements has a trapezoid shape defining a top flat surface at said crest contacting with said upper wall of said oil passageway and a bottom flat surface at said trough contacting with said bottom wall of said oil passageway. 
     
     
         15 . The oil cooler, as recited in  claim 12 , wherein each of said guiding elements has a trapezoid shape defining a top flat surface at said crest contacting with said upper wall of said oil passageway and a bottom flat surface at said trough contacting with said bottom wall of said oil passageway. 
     
     
         16 . The oil cooler, as recited in  claim 13 , wherein each of said guiding elements has first and second edges defining at each of said top and bottom flat surfaces, wherein said first edge of each of said guiding elements is aligned and integrated with said second edge of said adjacent guiding element to form a transverse common line so as to reinforce a strength of said embossed plate. 
     
     
         17 . The oil cooler, as recited in  claim 14 , wherein each of said guiding elements has first and second edges defining at each of said top and bottom flat surfaces, wherein said first edge of each of said guiding elements is aligned and integrated with said second edge of said adjacent guiding element to form a transverse common line so as to reinforce a strength of said embossed plate. 
     
     
         18 . The oil cooler, as recited in  claim 15 , wherein each of said guiding elements has first and second edges defining at each of said top and bottom flat surfaces, wherein said first edge of each of said guiding elements is aligned and integrated with said second edge of said adjacent guiding element to form a transverse common line so as to reinforce a strength of said embossed plate. 
     
     
         19 . The oil cooler, as recited in  claim 1 , wherein each of said embossed plates is stamping pressed to form said guiding elements thereat by forging a piece of metal plate. 
     
     
         20 . The oil cooler, as recited in  claim 9 , wherein each of said embossed plates is stamping pressed to form said guiding elements thereat by forging a piece of metal plate. 
     
     
         21 . The oil cooler, as recited in  claim 15 , wherein each of said embossed plates is stamping pressed to form said guiding elements thereat by forging a piece of metal plate. 
     
     
         22 . The oil cooler, as recited in  claim 1 , wherein said oil guiding arrangement comprises two tubular oil tunnels defining said oil inlet and said oil outlet thereat respectively, and a plurality of oil guiding plates which are longitudinally extended between said oil tunnels and are overlapped and sealed in pairs to form said oil passageway therebetween. 
     
     
         23 . The oil cooler, as recited in  claim 21 , wherein said oil guiding arrangement comprises two tubular oil tunnels defining said oil inlet and said oil outlet thereat respectively, and a plurality of oil guiding plates which are longitudinally extended between said oil tunnels and are overlapped and sealed in pairs to form said oil passageway therebetween. 
     
     
         24 . The oil cooler, as recited in  claim 22 , wherein said air guiding arrangement comprises a plurality of corrugated fins disposed within said air guiding passageways respectively at a position that each of said corrugated fins is sandwiched between two pairs of said oil guiding plates. 
     
     
         25 . The oil cooler, as recited in  claim 23 , wherein said air guiding arrangement comprises a plurality of corrugated fins disposed within said air guiding passageways respectively at a position that each of said corrugated fins is sandwiched between two pairs of said oil guiding plates.