Phala lamafuta: ndi chiyani, mitundu, limagwiritsidwa ntchito bwanji ...

phala lamafuta

La phala lamafuta ndi chinthu chomwe chimagwiritsidwa ntchito kwambiri dziko la zamagetsi. Nthawi zambiri ngati mawonekedwe owongolera kutentha kwapakati pakati pa tchipisi tapamwamba kwambiri ndi ma heatsinks. Koma si malo okhawo omwe amagwiritsidwa ntchito, amathanso kugwiritsidwa ntchito ngati ma transistors apamwamba kwambiri, mpaka mapepala amphamvu a peltier, Ndi zina zotero.

Munkhaniyi mudziwa chinthu ichi ndi chiyani, ntchito yake, momwe imagwiritsidwira ntchito moyenera, mitundu yomwe ilipo pamsika ndi mitundu yabwino kwambiri yomwe mungagule.

Kodi thermal paste ndi chiyani?

phala lamafuta

Ikhoza kutchulidwa m'njira zingapo: matenthedwe phala, matenthedwe silikoni, matenthedwe mafuta, ndi zina. Mawu onsewa ndi ofanana, ndipo palibe kusiyana pakati pawo. Amatanthauza chinthu chomwe chili ndi mphamvu zamatenthedwe zomwe zimathandizira kutulutsa kutentha pakakhala kulumikizana pakati pa malo awiri. Mwachitsanzo, heatsink ikagwiritsidwa ntchito pa chip, kudzaza "mipata" yomwe ingakhale pakati pa malo amodzi ndi ena ndikupangitsa kuti kuyendetsa bwino.

Thermal phala ili ndi zinthu zosiyanasiyana kapangidwe:

  • Polymerzable madzi masanjidwewo: ndi maziko a phala, zomwe zimapangitsa kukhala chinthu chamadzimadzi. Nthawi zambiri, mitundu iyi ya ma gels kapena ma phala nthawi zambiri amatengera ma silicones (motero dzina lawo), ma epoxy resins, acrylates, urethanes, ndi zina zambiri, ndipo amathanso kupangidwa momatira kapena zomatira m'malo mwa phala.
  • Tinthu tating'onoting'ono: zodzaza izi nthawi zambiri zimayimira pakati pa 70 ndi 80% ya kapangidwe ka phala lotentha. Pankhaniyi, amatha kukhala osiyanasiyana, monga mkuwa, aluminium, siliva, zinc oxide, boron nitride, etc.

Chifukwa cha zonsezi, phala lotenthali likhoza kukhala Poizoni ngati atamezedwa. Choncho, muyenera kusamala mukamagwiritsa ntchito, musambe m'manja ngati simunagwiritse ntchito magolovesi ndipo musawasiye kuti ana azitha kuwapeza. Kuphatikiza apo, imakwiyitsanso khungu, maso, ndi mucous nembanemba, chifukwa chake muyenera kugwiritsa ntchito zinthu zodzitchinjiriza pozigwira. Maphunziro ena a kanema amasonyeza momwe amagwiritsira ntchito ngakhale pamanja, koma izi siziyenera kuchitidwa.

Ngati muli kutsogolo kwa chipangizo chatsopano chamagetsi, ndipo simukudziwa ngati mungagwiritse ntchito phala lotentha pamwamba pake kapena kuti mugwiritse ntchito liti, ndikupangira kuti muziwerenga nthawi zonse. opanga ma datasheet. M'zolembazi mupeza zambiri za izi, kuwonjezera pa zosowa zakuwonongeka, mphamvu, kutentha kwakukulu komanso kocheperako komwe kumathandizidwa, zofunikira monga mphambano-case, mphambano-mpweya, ndi zina zambiri.

Propiedades

CPU

Matenthedwe phala osati kokha katundu za matenthedwe matenthedwe, komanso ena, ndipo m'pofunika kulabadira mwapadera kwa iwo, chifukwa iwo akhoza kuyika ntchito malinga ndi zinthu zamagetsi. Izi makamaka zimadziwika ndi:

  • Thermal conductivity: Ndilo chinthu chofunikira kwambiri pa phala lamafuta, chifukwa ndi chinthu chomwe cholinga chake ndikuchotsa kutentha. Choncho, ayenera kukhala ndi luso loyendetsa kutentha. Mayunitsi monga watt pa mita-Kelvin amagwiritsidwa ntchito kuyeza izi. Kutengera mtundu wa pasitala kapena mtundu, ma conductivity awa amatha kusiyanasiyana. Mwachitsanzo, mkuwa, siliva, diamondi kapena aluminiyamu ali ndi katundu wabwino kwambiri pankhaniyi, ena monga zinc oxide, aluminium nitride, etc., osati kwambiri.
  • Magetsi conductivity: Zimakhudzana ndi vuto limodzi lomwe phala lamafuta lingayambitse ngati likuyenda bwino magetsi. Nthawi zambiri, opanga pasitala amakonda kuwonetsa kukana kwamagetsi komwe mankhwala awo amapereka. Pamwamba (ohms pa centimita), ndiye kuti insulator yabwino idzakhala, kotero ikhoza kukhala yabwinoko. Ngati phala liri ndi kukana kochepa ndipo likuyenda bwino ndiye kuti likhoza kuyambitsa mavuto afupipafupi ngati akumana ndi mayendedwe kapena mapini.
  • Thermic dilatation coefficient: ndi gawo lina loyenera kulabadira. Pankhaniyi, muyenera kuyang'ana phala lomwe coefficient yake ndi yotsika kwambiri, ndiko kuti, kuti ikule pang'ono ndi kutentha. Kupanda kutero, zitha kuyambitsa mavuto pakati pa zigawo.

Mitundu ya mafuta otentha

poyatsira moto

Pali mitundu ingapo ya phala lamafuta pamsika, ndipo ndikofunikira kusiyanitsa pakati pa mayankho onse omwe alipo kuti mudziwe kuti ndi iti yomwe mungasankhe pazochitika zilizonse, popeza onse ali ndi mwayi wawo. ubwino ndi kuipa:

  • Chipinda chotenthetsera: Ndi zomatira kapena zomatira zomwe zimagwira ntchito ngati mawonekedwe opangira kutentha ndipo cholinga chake ndi chofanana ndendende ndi phala lamafuta, koma chitha kugwiritsidwa ntchito mosavuta, ndipo sichiphatikiza kuwongolera kuchuluka, kuwonetsetsa kuti chikufalikira mosiyanasiyana, etc., popeza imangomamatira pamwamba pa chigawocho kuti chitayike kapena pa heatsink. Amagulitsidwa padera, ngakhale nthawi zambiri amabwera atayikidwa kale m'makina ena a firiji kuti athandizire kusonkhana. Izi nthawi zambiri zimapangidwa ndi silikoni kapena sera ya parafini yosakanikirana ndi tinthu tating'onoting'ono ta conductive. Pa kutentha kwa chipinda zimawoneka zolimba kwambiri, koma zikamagwira ntchito, zimakhala zamadzimadzi.
  • Matenthedwe phala: ndi zinthu zamadzimadzi zowoneka bwino zomwe zimagulitsidwa m'zitini zokhala ndi burashi, machubu kapena masyringe kuti azigwiritsidwa ntchito mosavuta. Mkati mwa phalali mungapeze mitundu iyi:
    • Za chitsulo: amagwiritsa ntchito zitsulo zachitsulo (zinc, mkuwa, aluminiyamu, siliva, golidi ...) podzaza, ndipo nthawi zambiri amakhala ndi mtundu wa imvi. Iwo ndi otchuka kwambiri, ndipo si okwera mtengo kwambiri. Amakhala bwino potengera kutenthetsa kwamafuta, amatha kutsitsa kutentha mpaka 6ºC nthawi zina. Komabe, ali ndi vuto, ndipo ndi madutsidwe awo magetsi. Ndi tinthu tachitsulo, imatha kufupikitsa pakati pa zolumikizana ngati pali kutayikira.
    • Zoumbaumba: tinthu tating'onoting'ono ta ceramic (zinc oxide, silicon dioxide, aluminium oxide, ...), kupereka kuwala kotuwa kapena koyera. Mfundo yamphamvu ya silicones yotenthayi ndi yotsika mtengo kwambiri ndipo imakhala ndi magetsi otsika kwambiri, choncho amakhala otetezeka ngati akutuluka. Komabe, kutentha kwawo kumakhala koipitsitsa, kotero kumangothandiza kuchepetsa kutentha kwa 1 mpaka 3ºC poyerekeza ndi mawonekedwe omwe sagwiritsa ntchito.
    • Carbon: ndi okwera mtengo komanso atsopano, koma amapereka zotsatira zabwino. Nthawi zambiri amapangidwira machitidwe omwe amafunikira kutentha kwambiri, monga tchipisi tambiri, zida zogwira ntchito kwambiri kapena zida zamphamvu kwambiri, ndi zina. Amachokera ku tinthu tating'ono monga fumbi la diamondi, graphene oxide, etc. Pankhaniyi, katunduyo ndi pafupifupi wangwiro, chifukwa mbali imodzi ali ndi matenthedwe matenthedwe bwino kwambiri ngati zitsulo, ndi zina ali ndi otsika kwambiri madutsidwe magetsi monga zadothi.
    • Chitsulo chamadzimadzi: Sizofala, koma nthawi zambiri amagwiritsidwa ntchito ndi ena opanga kapena okonda pazitsulo za heatsink zopangira ma unit etc. Ngakhale ali ndi zinthu zabwino zowonongeka, ngakhale zabwinoko kuposa zomwe zimapangidwa ndi zitsulo, mtundu winawu nthawi zambiri umakhala wokwera mtengo ndipo ukhoza kuchitapo kanthu ndi ma heatsinks a aluminiyamu, chifukwa amagwiritsa ntchito zitsulo monga indium kapena gallium.
    • Zophatikiza: Palinso ma hybrids otenthetsera matenthedwe, ndiye kuti, amasakaniza magawo osiyanasiyana odzaza ngati maziko kuti apititse patsogolo zinthuzo.

Zogula zotani?

Ngati mukufuna kugula phala lotentha, nazi zina zabwino zopangidwa ndi zosankha zomwe mumapeza pamsika:


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