Kwemishini ye-elekthronikhi, inani elithile lokushisa lenziwa ngesikhathi sokusebenza, ukuze izinga lokushisa langaphakathi kwemishini likhuphuke ngokushesha. Uma ukushisa kungahlangene ngesikhathi, imishini izoqhubeka nokushisa, futhi idivaysi izokwehluleka ngenxa yokugcwala ngokweqile. Ukwethembeka kokusebenza kwemishini ye-elekthronikhi kuzokwehla.
Ngakho-ke, kubaluleke kakhulu ukwenza ukwelashwa okuhle kokuhlanza ukushisa ebhodini lesekethe. Ukudilizwa kokushisa kwe-PCB Circuit Board kuyisixhumanisi esibaluleke kakhulu, ngakho-ke liyini inqubo yokuhlanza ukushisa kwebhodi yesekethe ye-PCB, ake sixoxe ngokuthi ngezansi.
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Ukuhlanza ukushisa nge-PCB Board ngokwayo amabhodi e-PCB asetshenziswa kakhulu ama-PRB clad / epoxy I-Glass Vapetrates noma i-phenolic resin ingilazi yezindwangu, kanye nenani elincane lamabhodi endwangu asuselwa ephepheni asetshenziswayo.
Yize lezi zinto ezifakiwe zinezindawo ezinhle kakhulu zikagesi nokucubungula izakhiwo, zinokungasebenzi kahle kokushisa. Njengendlela yokuhlanza ukushisa yezinto ezifudumele, cishe akunakwenzeka ukulindela ukushisa kusuka ku-resin ye-PCB uqobo ukuze kube nokushisa, kepha ukuqeda ukushisa kusuka ebusweni bengxenye ezungezile.
Kodwa-ke, njengoba imikhiqizo ye-elekthronikhi ingene enkathini ye-miniaturization yezakhi, okukhulayo okuphezulu, kanye nomhlangano omkhulu oshisa, akwanele ukuncika ebusweni bendawo encane kakhulu yokuqeda ukushisa.
Ngasikhathi sinye, ngenxa yokusetshenziswa okubanzi kwezakhi ze-Surface Mount ezifana ne-QFP ne-BGA, inani elikhulu lokushisa elenzelwe izakhi zidluliselwa kwi-PCB Board. Ngakho-ke, indlela engcono kakhulu yokuxazulula inkinga yokuhlanza ukushisa ukuthuthukisa umthamo wokuhlanza ukushisa we-PCB uqobo, othintana ngqo nento yokushisa, ngeBhodi yePCB. Kwenziwe noma kwakhiwe.
Ngakho-ke, kubaluleke kakhulu ukwenza ukwelashwa okuhle kokuhlanza ukushisa ebhodini lesekethe. Ukudilizwa kokushisa kwe-PCB Circuit Board kuyisixhumanisi esibaluleke kakhulu, ngakho-ke liyini inqubo yokuhlanza ukushisa kwebhodi yesekethe ye-PCB, ake sixoxe ngokuthi ngezansi.
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Ukuhlanza ukushisa nge-PCB Board ngokwayo amabhodi e-PCB asetshenziswa kakhulu ama-PRB clad / epoxy I-Glass Vapetrates noma i-phenolic resin ingilazi yezindwangu, kanye nenani elincane lamabhodi endwangu asuselwa ephepheni asetshenziswayo.
Yize lezi zinto ezifakiwe zinezindawo ezinhle kakhulu zikagesi nokucubungula izakhiwo, zinokungasebenzi kahle kokushisa. Njengendlela yokuhlanza ukushisa yezinto ezifudumele, cishe akunakwenzeka ukulindela ukushisa kusuka ku-resin ye-PCB uqobo ukuze kube nokushisa, kepha ukuqeda ukushisa kusuka ebusweni bengxenye ezungezile.
Kodwa-ke, njengoba imikhiqizo ye-elekthronikhi ingene enkathini ye-miniaturization yezakhi, okukhulayo okuphezulu, kanye nomhlangano omkhulu oshisa, akwanele ukuncika ebusweni bendawo encane kakhulu yokuqeda ukushisa.
Ngasikhathi sinye, ngenxa yokusetshenziswa okubanzi kwezakhi ze-Surface Mount ezifana ne-QFP ne-BGA, inani elikhulu lokushisa elenzelwe izakhi zidluliselwa kwi-PCB Board. Ngakho-ke, indlela engcono kakhulu yokuxazulula inkinga yokuhlanza ukushisa ukuthuthukisa umthamo wokuhlanza ukushisa we-PCB uqobo, othintana ngqo nento yokushisa, ngeBhodi yePCB. Kwenziwe noma kwakhiwe.
Lapho umoya ugeleza, uhlala uvame ukugeleza ezindaweni ezinokumelana okuphansi, ngakho-ke lapho uhlela amadivaysi ebhodini lesekethe ephrintiwe, gwema ukushiya indawo enkulu endaweni ethile endaweni ethile. Ukucushwa kwamabhodi wesifunda amaningi aphrintiwe kuwo wonke umshini kufanele futhi anake inkinga efanayo.
Idivaysi ebucayi yokushisa ifakwa kangcono endaweni yokushisa ephansi kakhulu (efana nephansi ledivayisi). Ungalokothi uyibeke ngqo ngaphezulu kwensiza yokushisa. Kungcono ukugxilisa amadivayisi amaningi endizeni evundlile.
Beka amadivaysi ngokusetshenziswa kwamandla okuphezulu kakhulu kanye nesizukulwane sokushisa eduze kwesimo esihle kakhulu sokuhlanza ukushisa. Musa ukubeka amadivaysi afudumele aphezulu emakhoneni nasemaphethelweni e-peripheral ebhodi ephrintiwe, ngaphandle kokuthi kuhlelwe ukushisa ukushisa eduze kwalo.
Lapho uklama amandla okuphikiswa kwamandla, khetha idivaysi enkulu ngangokunokwenzeka, futhi uyenze ube nendawo eyanele yokuhlanza ukushisa lapho ulungisa ukwakheka kwebhodi eliphrintiwe.
Izakhi ezikhiqiza ukushisa okuphezulu kanye nama-radiator namapuleti okushisa. Lapho inombolo encane yezakhi ku-PCB ikhiqiza inani elikhulu lokushisa (ngaphansi kuka-3), ipayipi lokushisa noma ipayipi lokushisa lingangezwa ezakhiweni ezikhiqiza ukushisa. Lapho amazinga okushisa angeke ancishiswe, ingasetshenziswa i-radiator ene-fan ukuthuthukisa umphumela wokushisa ukushisa.
Lapho inani lamadivayisi wokufudumeza likhulu (ngaphezu kwe-3), ikhava enkulu yokuhlanza ukushisa (ibhodi) ingasetshenziswa, okuwukushiswa okushisa okukhethekile okwenziwe ngokwezifiso nokuphakama kwensiza yokushisa ku-PCB noma i-flat heat hot usike izikhundla ezihlukile zokuphakama. Isembozo sokuhlanza ukushisa sigoqwe ngokuhlukile ebusweni bengxenye, futhi lixhumana nengxenye ngayinye yokuqeda ukushisa.
Kodwa-ke, umphumela wokuhlanza ukushisa awumuhle ngenxa yokuvumelana okumpofu kokuphakama ngesikhathi sokuhlangana kanye nokushiswa kwezakhi. Imvamisa, isigaba esithambile se-Thermal Shintsha i-Thermal Pad yengezwa ebusweni bengxenye yokuthuthukisa umphumela wokuhlanza ukushisa.
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Ngemishini ethola i-Free Menection Airpholing yokupholisa, kungcono ukuhlela amasekethe ahlanganisiwe (noma amanye amadivaysi) ngokuqondile noma ngokuvundlile.
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Amukele umklamo we-wiring onengqondo ukuze aqaphele ukushiyeka kokushisa. Ngoba i-resin epuletini inokuphamba okushisayo, futhi imigqa ye-foil ye-Copper kanye nezimbobo zingabahambisi abahle zokushisa, okwandisa izinga elisele le-foil yethusi kanye nokwandisa izimbobo zokushisa ukushisa kuyindlela esemqoka yokuhlanza ukushisa. Ukuhlola umthamo wokuncipha kokushisa kwe-PCB, kuyadingeka ukubala okufanayo okuvuselelayo kwe-thermal (ama-Eq) wezinto ezihlanganisiwe ezakhiwe ngezinto ezahlukahlukene ezinokuphakelayo okuhlukile kwe-PCB.
Izakhi ezisebhodini elifanayo eliphrintiwe kufanele zihlelwe ngangokunokwenzeka ngokuya ngenani lazo lezenhlalo kanye nezinga lokushisa kokushisa. Amadivayisi anenani eliphansi le-calorific noma ukumelana nokushisa okuphezulu (njengokuphambuka okuncane kwesiginali, amasekethe amancane ahlanganisiwe, ama-capacitors ahlanganisiwe, njll.) Kufanele abekwe ku-airflow epholile. Ukugeleza okungaphezulu (emnyango), amadivaysi anokushisa okukhulu noma ukumelana nokushisa kwamandla (okufana nama-transistors aphezulu, amasekethe amakhulu ahlanganisiwe, njll.) Abekwe endaweni ephansi kakhulu yokuphola komoya.
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Esiqondisweni esivundlile, amadivaysi anamandla aphezulu ahlelwe eduze konqenqema lwebhodi ephrintiwe ngangokunokwenzeka ukunciphisa indlela yokudlulisa ukushisa; Eqinisweni mpo, amadivaysi anamandla aphezulu ahlelwe eduze ngangokunokwenzeka esiqongweni sebhodi ephrintiwe ukunciphisa ithonya lawa madivayisi okushisa kwamanye amadivaysi. .
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Ukuchithwa kokushisa kwebhodi eliphrintiwe emishini ethembela kakhulu ekuhambeni komoya, ngakho-ke indlela yokugeleza komoya kufanele ifundwe ngesikhathi sokwakheka, futhi idivaysi noma ibhodi yesekethe eliphrintiwe kufanele lilungiselelwe kahle.
Lapho umoya ugeleza, uhlala uvame ukugeleza ezindaweni ezinokumelana okuphansi, ngakho-ke lapho uhlela amadivaysi ebhodini lesekethe ephrintiwe, gwema ukushiya indawo enkulu endaweni ethile endaweni ethile.
Ukucushwa kwamabhodi wesifunda amaningi aphrintiwe kuwo wonke umshini kufanele futhi anake inkinga efanayo.
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Idivaysi ebucayi yokushisa ifakwa kangcono endaweni yokushisa ephansi kakhulu (efana nephansi ledivayisi). Ungalokothi uyibeke ngqo ngaphezulu kwensiza yokushisa. Kungcono ukugxilisa amadivayisi amaningi endizeni evundlile.
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Beka amadivaysi ngokusetshenziswa kwamandla okuphezulu kakhulu kanye nesizukulwane sokushisa eduze kwesimo esihle kakhulu sokuhlanza ukushisa. Musa ukubeka amadivaysi afudumele aphezulu emakhoneni nasemaphethelweni e-peripheral ebhodi ephrintiwe, ngaphandle kokuthi kuhlelwe ukushisa ukushisa eduze kwalo. Lapho uklama amandla okuphikiswa kwamandla, khetha idivaysi enkulu ngangokunokwenzeka, futhi uyenze ube nendawo eyanele yokuhlanza ukushisa lapho ulungisa ukwakheka kwebhodi eliphrintiwe.