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Title: Heat sink mounting for controlled rectifiers
Claims: We claim: 1. An assembly, comprising electric power rectifying means, first heat sink means including a first member having a plurality of spaced first cooling fins providing a first cooling fluid passageway and a second member having a plurality of spaced second cooling fins providing a second cooling fluid passageway with said first and second heat sink members spaced substantially within a common first plane and abutting a first side of said rectifying means, second heat sink means including a third member located within a second plane and providing a plurality of spaced third cooling fins providing a third cooling fluid passageway and abutting a second side of said rectifying means, said rectifying means including a first rectifying device sandwiched between said first and third heat sink members and a second rectifying device sandwiched between said second and third heat sink members, said first, second and third cooling fins aligned substantially in parallel and permitting unidirectional coolant flow through said first, second and third fluid passageways provided by said first, second and third heat sink members, respectively, means securing said first and second heat sink means in spaced relationship with respect to each other and in engagement with said rectifying means, and means operatively connected to said rectifying means and supplying a first current frequency input and a second current frequency output. 2. The assembly of claim 1, wherein said first, second and third heat sink members each have an elongated shape, said first and second fluid passageways extending in a substantially axial direction of said first and second heat sink members, respectively, and said third passageway extending in a substantially transverse direction of said third heat sink member. 3. The assembly of claim 1, wherein said first, second and third heat sink members each have an elongated shape, said first and second fluid passageways extending in a substantially transverse direction of said first and second heat sink members, respectively, and said third passageway extending in a substantially axial direction of said third heat sink member. 4. The assembly of claim 1, wherein said first and second heat sink means sandwich a first portion of said rectifying means including said first and second rectifying devices, and including third heat sink means retained in spaced relationship with said first heat sink means by sandwiching a second portion of said rectifier means, said third heat sink means including a fourth heat sink member providing a plurality of spaced fourth cooling fins having a fourth cooling fluid passageway therebetween, said second rectifying portion including a third rectifying device sandwiched between said first and fourth heat sink members and a fourth rectifying device sandwiched between said second and fourth heat sink members, said fourth cooling fins aligned substantially in parallel with said first, second and third cooling fins and permitting the unidirectional coolant flow through said fourth fluid passageway. 5. The assembly of claim 4, wherein said first, second, third and fourth heat sink members each have an elongated shape, said first and second fluid passageways extending in a transverse direction of said first and second heat sink members, respectively, and said third and fourth fluid passageways extending in an axial direction of said third and fourth heat sink members. 6. The assembly of claim 1, wherein said first and second heat sink members each includes an intermediate portion having oppositely disposed first and second sides which are connected to said first and second rectifying portions, respectively, and oppositely disposed first and second end members connected to said intermediate member and containing said respective cooling fins for removing heat from said first and second rectifying portions. 7. An assembly, comprising electric power rectifying means having first and second oppositely disposed sides and changing a first current frequency to a second current frequency and providing a desired electrical power output, first heat sink means electrically and thermally connected to said first side of said rectifying means and including three spaced heat dissipating members each being longitudinally aligned in parallel with respect to each other within a first plane, second heat sink means electrically and thermally connected to said second side of said rectifying means and including two spaced heat dissipating members each being longitudinally aligned in parallel with respect to each other within a second plane, the longitudinal orientation of said first heat dissipating members being at an approximate 90.degree. relationship to the longitudinal orientation of said second heat dissipating members, first and second clamping means connected to said first and second heat sink means and retaining said rectifier means sandwiched under pressure by said first and second heat sink means, first insulating means electrically insulating said first clamping means from said second heat sink means, second insulating means electrically insulating said second clamping means from said first heat sink means, first connecting means electrically connected to said first clamping means and supplying a first current frequency to said first side of said rectifying means through said first heat sink means, and second connecting means electrically connected to said second clamping means and supplying a second current frequency to said second side of said rectifying means through said second heat sink means. 8. The assembly of claim 7, wherein said three heat dissipating members each includes a plurality of spaced first cooling fins aligned in parallel and providing a plurality of spaced first cooling fluid passages and said two heat dissipating members each includes a plurality of spaced second cooling fins aligned in parallel and providing a plurality of spaced second cooling fluid passages aligned in spaced relationship with respect to said first cooling fluid passages and permitting unidirectional cooling of said five heat dissipating members. 9. An assembly, comprising electric power rectifying means changing a first current frequency to a second current frequency and providing a desired electrical power output, first current conducting means, second current conducting means separated from said first current conducting means, first heat sink means including a first heat sink member electrically connected to said first current conducting means, second heat sink means including a second heat sink member electrically connected to said second current conducting means, said first and second heat sink means retained in spaced relationship by sandwiching said rectifying means in electrical and thermal conductive engagement, said first current conducting means including a conducting member passing through an opening in said second heat sink member and directly electrically connected to said first heat sink member, insulating means connected to electrically insulate said first current conducting member from said second heat sink means, and electrical input means connected to said first conducting member and supplying said first current frequency to said rectifying means through said opening within said second heat sink member and directly to said first heat sink member, said input means connected to said second conducting means and supplying said second current frequency to said rectifying means through said second conducting means and said second heat sink means. 10. The assembly of claim 9, and including an isolation insulating member connected to said first current conducting member, and mounting means connected to said isolation insulating member and supporting said rectifying means. 11. The assembly of claim 1, and including compression means operatively connected to said first conducting member and to said first and second heat sink means and applying pressure upon said rectifying means to maintain good electrical and thermal conductive engagement between said rectifying means and said first and second heat sink means. 12. The assembly of claim 11, wherein said first conducting member includes a rod-like bolt, and said compression means includes a plurality of nuts rotatably mounted in threaded engagement about said bolt and operatively connected to said first and second heat sink means. 13. The assembly of claim 12, wherein said insulating means electrically insulates said bolt and nuts from said second heat sink means. 14. An assembly, comprising electric power rectifying means including a rectifying device having external first and second contact surfaces spaced substantially in parallel and substantially normal to the axis of said device, heat sink means including a heat dissipating first electrode having a first side providing a planar surface disposed generally parallel to and abutting said first contact surface and a second side oppositely spaced from said first side including a plurality of spaced outwardly extending heat radiating elements and a plurality of spaced and substantially parallel valleys defining cooling fluid passageways, said second side including a force transmitting surface providing a surface edge spaced from said axis of said device and a recess located between a pair of said heat radiating elements having a bottom portion extending at an incline from said force transmitting surface toward said first side, a second electrode engaging said second contact surface of said device, force applying means providing a clamping force to said force transmitting surface and operatively to said second contact surface and forcing said planar surface into intimate heat and electrical engagement with said first contact surface and providing substantially uniform rectifier clamping pressure, and means operatively connected to said first and second electrodes and supplying a first current frequency input and a second current frequency output. 15. The assembly of claim 14, wherein said second electrode provides heat dissipation and includes a first side providing a planar surface disposed generally parallel to and abutting said second contact surface and a second side oppositely spaced from said first side including a plurality of spaced outwardly extending heat radiating elements and a plurality of spaced and substantially parallel valleys defining cooling fluid passageways, said second side of said second electrode including a force transmitting surface providing a surface edge spaced from said axis of said device and a recess located between a pair of said heat radiating elements having a bottom portion extending at an incline from said force transmitting surface toward said first side, said force applying means providing a clamping force directly to said force transmitting surfaces of said first and second heat dissipating electrodes and providing substantially uniform rectifier clamping pressure. 16. The apparatus of claim 15, wherein said first and second heat dissipating electrodes each provides an opening communicating with said force transmitting surface and said first side, said force applying means including a force transmitting member located within said openings provided by said first and second electrodes and functioning to operatively provide clamping force directly to said force transmitting surfaces and providing substantially uniform rectifier clamping pressure. 17. An assembly, comprising a plurality of rectifying devices changing a first current frequency to a second current frequency and providing a desired electrical power output, a first, second, third, fourth, fifth and sixth securing members positioned in spaced relationship with respect to each other, a first, second, third, fourth, and fifth electrically conductive heat sinks each having a plurality of openings retaining certain ones of said securing members in spaced relationship, said first heat sink retaining said first and fourth securing members, said second heat sink retaining said second and sixth securing members, said third heat sink retaining said third and fifth securing members, said fourth heat sink retaining said first, fifth, and sixth securing members, said fifth heat sink retaining said second, third and fourth securing members, said first, second, and third heat sinks spaced with respect to each other in an approximate common first plane and said fourth and fifth heat sinks spaced with respect to each other in an approximate common second plane, said plurality of rectifying devices located between said first and second planes so that each of said rectifying devices is removably connected to one of said heat sinks within said first plane and to one of said heat sinks within said second plane, compression means operatively connected to said first, second, third, fourth, fifth and sixth securing members and to said first, second, third, fourth, and fifth heat sinks and transmitting pressure upon said plurality of rectifying devices through said first, second, third, fourth and fifth heat sinks, electrical connecting means electrically connected to said first, second and third heat sinks and supplying said first current frequency to said plurality of rectifying devices and further electrically connected to said fourth and fifth heat sinks and supplying said second current frequency to said plurality of rectifying devices. 18. The assembly of claim 17, wherein said first, second, third, fourth, fifth and sixth securing members each includes a bolt having threaded portions adjacent to said corresponding heat sinks, and said compression means includes a plurality of threaded nuts which engage the threaded portions of said bolts and operatively apply pressure upon said heat sinks. 19. The assembly of claim 18, including first insulating means electrically insulating said first, second and third securing members from said fourth and fifth heat sinks, and second insulating means electrically insulating said fourth and fifth securing members from said first, second, and third heat sinks, said first, second, and third securing members including electrically conductive elements connected to said electrical connecting means and supplying said first current frequency to said plurality of rectifying devices through said first, second and third heat sinks, said fourth and fifth securing members including electrically conductive elements connected to said electrical connecting means and supplying said second current frequency to said plurality of rectifying devices through said fourth and fifth heat sinks. 20. The assembly of claim 19, and including a current sensing transformer operatively connected to one of said first, second and third securing members and providing an output signal proportional to the sensed current. 21. An assembly, comprising electric power rectifying means having first and second rectifying portions changing between an alternating current frequency and a direct current frequency and providing a desired electrical power output, first heat sink means including a direct current conducting heat sink member electrically and thermally connected to said first rectifying portion, second heat sink means including three spaced alternating current conducting heat sink members electrically and thermally connected to said first and second rectifying portions, third heat sink means including a direct current conducting heat sink member electrically and thermally connected to said second rectifying portion, said first and second heat sink means retained in spaced relationship by sandwiching said first rectifying portion, said second and third heat sink means retained in spaced relationship by sandwiching said second rectifying portion, clamping means operatively connected to said first, second and third heat sink means and maintaining good electrical and thermal contact between said heat sink means and said rectifying means, and electrical connecting means electrically connected to said first and third heat sink means and supplying said direct current frequency to said rectifying means and further connected to said second heat sink means and supplying said alternating current frequency to said rectifying means. 22. The assembly of claim 21, wherein said clamping means includes a first securing member electrically connected to said first heat sink means and located within openings provided by said second and third heat sink means, a second securing member electrically connected to said third heat sink means and located within openings provided by said first and second heat sink means, said electrical connecting means connected to said first and second securing members and supplying said alternating current frequency to said rectifying means through said first and third heat sink means, and including insulating means connected to said first and second securing members and electrically insulating said first securing member from said second and third heat sink means and electrically insulating said second securing member from said first and second heat sink means. 23. The assembly of claim 22 wherein said clamping means further includes a plurality of threaded nuts, and said first and second securing members each includes a threaded bolt which removably engages said nuts for securing said first, second and third heat sink means in good electrical and thermal contact with said sandwiched rectifying means. 24. An assembly, comprising a plurality of electric power converting rectifying devices, a first plurality of alternating current conducting members, a second plurality of direct current conducting members spaced from said first plurality of members, alternating current heat sink means having a plurality of openings retaining said first and second conducting members, direct current heat sink means having a plurality of openings retaining said first and second conducting members, said alternating and direct current heat sink means retained in spaced relationship by engaging said plurality of rectifying devices, first insulating means electrically insulating said first conducting members from said direct current heat sink means, second insulating means electrically insulating said second conducting members from said alternating current heat sink means, input means connected to said first conducting members and supplying an alternating current input to said plurality of rectifying devices through said first conducting members and said alternating current heat sink means, and output means connected to said second conducting means and supplying a direct current output from said plurality of rectifying devices through said direct current heat sink means and said second conducting members. 25. The assembly of claim 24, and further including compression means operatively connected to said first and second current conducting members and to said alternating current and direct current heat sink means and applying pressure upon said plurality of rectifying devices through said alternating current and direct current heat sink means. 26. The assembly of claim 24, and including a plurality of isolation insulating members connected to selected ones of said first and second conducting members, and mounting means connected to said isolation insulating members and supporting said rectifying devices. 27. An assembly, comprising electric power rectifying means changing a first current frequency to a second current frequency and providing a desired electrical power output, first current conducting means, second current conducting means spaced from said first conducting means, first heat sink means including a first heat sink member electrically connected to said first conducting means and having at least one opening therein, second heat sink means including a second heat sink member electrically connected to said second conducting means and having at least one opening therein, said first and second heat sink means retained in spaced relationship by sandwiching said rectifying means in electrical and thermal conductive engagement, said first conducting means including a first conducting member passing through said opening within said second heat sink member and directly electrically connected to said first heat sink member and said second conducting means including a second conducting member passing through said opening within said first heat sink member and directly connected to said second heat sink member, first insulating means electrically insulating said first conducting means from said second heat sink means, second insulating means electrically insulating said second conducting means from said first heat sink means, first terminal means connected to said first conducting means and conducting a first current frequency through the opening within said second heat sink member to said rectifying means through said first conducting member and said first heat sink means, and second terminal means connected to said second conducting means and conducting a second current frequency from said rectifying means through said second heat sink means and said second conducting means. 28. An assembly, comprising electric power rectifying means changing a first current frequency to a second current frequency and providing a desired electrical power output, first current conducting means, second current conducting means separated from said first current conducting means, first heat sink means electrically connected to said first current conducting means, second heat sink means electrically connected to said second current conducting means, said first and second heat sink means retained in spaced relationship by sandwiching said rectifying means in electrical and thermal conductive engagement, said first current conducting means passing through an opening in said second heat sink means, insulating means electrically insulating said first current conducting means from said second heat sink means, electrical connecting means connected to said first conducting means and supplying said first current frequency to said rectifying means through said first conducting means and said first heat sink means and further connected to said second conducting means and supplying said second current frequency to said rectifying means through said second conducting means and said second heat sink means, and a printed circuit board connected to said first conducting means and including a printed circuit connection electrically connected to said first conducting means. 29. An assembly, comprising electric power rectifying means changing a first current frequency to a second current frequency and providing a desired electrical power output, first current conducting means including an electrically conductive rod, second current conducting means separated from said first current conducting means, first heat sink means electrically connected to said first current conducting means, second heat sink means electrically connected to said second current conducting means, said first and second heat sink means retained in spaced relationship by sandwiching said rectifying means in electrical and thermal conductive engagement, said first current conducting means passing through an opening in said second heat sink means, insulating means electrically insulating said first current conducting means from said second heat sink means, electrical connecting means connected to said first conducting means and supplying said first current frequency to said rectifying means through said first conducting means and said first heat sink means and further connected to said second conducting means and supplying said second current frequency to said rectifying means through said second conducting means and said second heat sink means, and a transformer located about said first conductive rod and providing an output signal proportional to the sensed current flowing through said rod. 30. An assembly, comprising electric power rectifying means changing a first current frequency to a second current frequency and providing a desired electrical power output, first current conducting means including an electrically conductive rod, second current conducting means separated from said first current conducting means, first heat sink means electrically connected to said first current conducting means, second heat sink means electrically connected to said second current conducting means, said first and second heat sink means retained in spaced relationship by sandwiching said rectifying means in electrical and thermal conductive engagement, said first current conducting means passing through an opening in said second heat sink means, insulating means electrically insulating said first current conducting means from said second heat sink means, electrical connecting means connected to said first conducting means and supplying said first current frequency to said rectifying means through said first conducting means and said first heat sink means and further connected to said second conducting means and supplying said second current frequency to said rectifying means through said second conducting means and said second heat sink means, and a toroidal shaped line inductor core electrically connected to said rod between said connecting means and said first heat sink means and supplying inductance to said current. Other info: Inventors: Maynard, John T. (New Berlin, WI, US) Schwibinger, Gilbert A. (Oconomowoc, WI, US) Application Number: 445987 Filing Date: 1974-02-26 Publication_date: 1976-05-04 Assignee: Armor Elevator Company, Inc. (Louisville, KY) Primary Class(es): 361/710 165/80.3, 257/718, 257/722, 257/909, 257/E23.099, 361/702 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Tolin, Gerald P. Assistant Examiner: Attorney: Andrus, Sceales, Starke & Sawall |
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