Inkqubo yokwenziwa kweMicrochannel Coils (MCHEs)

Ukuveliswa kwee-MCHEs yinkqubo echanekileyo-eqhutywayo edibanisa inzululwazi yezinto, ukubumba i-extrusion, kunye nobuchwepheshe bokujoyina i-thermal, elungiselelwe ukudala i-ultra{1}}itshaneli zokuhamba ezincinci (0.1-2 mm) ukwenzela ukuhanjiswa kobushushu okusebenzayo. Amanyathelo aphambili ngala alandelayo:

1. ULungiselelo lweMathiriyeli yeAluminiyam yeAluminiyam

Ii-MCHEs ikakhulu zisebenzisa ialloyi ze-aluminiyam (umz., 3003, 6061) ngenxa yobunzima bazo, ukuhanjiswa kwe-thermal ephezulu, kunye neendleko-ezisebenzayo.

Ukukhethwa kwezinto: High{0}}i-aluminiyam ecocekileyo i-ingots ixutywe nezinto ezixubeneyo (i-magnesium, i-silicon) ukuqinisa amandla omatshini kunye nokumelana nokubola, ukuhlangabezana nemigangatho ye-ASTM B209 okanye i-EN 573-3.

Ukulungiswa kwangaphambili: Imiphezulu ye-Ingot ithotyiwe (kusetyenziswa izicoci ze-alkaline) kwaye zifakwe emanzini (nge-dilute nitric acid) ukususa iioksidi, i-oyile, okanye ukungcola{0}}kubaluleke kakhulu ekuqinisekiseni ukukhutshwa okufanayo kunye nomgangatho wokubrawuza kamva.

2. Microchannel Flat Tube Extrusion

Eli nyathelo lenza "undoqo" wee-MCHEs: iityhubhu ezisicaba ezinemikrozo emincinci ehambelanayo.

Ukuseta Extrusion: I-aluminiyam eshushu ye-alloy billet (i-450-500 degree) ityhalwa ngokuchaneka{2}}i-engineered die (ene-microchannel{3}}imingxuma emilo) ngomatshini wokushicilela we-hydraulic. Uyilo lokufa lumisela ngokuthe ngqo ubungakanani betshaneli (ngokuqhelekileyo<1 mm for high-efficiency models) and distribution.

Ukulinganisa ubungakanani: I-tube ye-flat extruded ipholile ngokukhawuleza (ngomoya okanye ukucima kwamanzi) ukuze kugcinwe ukuzinza kwe-dimensional, emva koko kunqunywe ubude obufunekayo (ukusuka kwi-0.5 m ukuya kwi-6 m, kuxhomekeke kwisicelo).

Ukujonga uMgangatho: I-Laser micrometers iqinisekisa i-diameter yetshaneli, ubukhulu bodonga, kunye ne-flatness{0}}ukunyamezela kulawulwa ngaphakathi kwe-± 0.02 mm ukunqanda ukungahambelani kokumelana nokuhamba.

3. IiFins Stamping & Forming

Iifins zongezwa kwiityhubhu ezisicaba ukwandisa indawo yokudlulisa ubushushu (into ephambili ekusebenzeni kwe-MCHE).

Inkqubo yeStamping: Amaphepha e-aluminiyam (0.1–0.2 mm ubukhulu) afakwa kumatshini wokushicilela ochanekileyo ukuze enze iipateni ze-fin{2}}uyilo oluqhelekileyo luquka amaphiko alouvered (ukuphucula ukuqukuqela komoya) okanye amaphiko amazimba (ukubumbana).

{0}Unyango lwangaphambili: Amaphiko anokuthi afumane unyango olungaphezulu (umzekelo, i-chromate conversion coating) ukuphucula ukunamathela kunye ne-brazing flux kunye nokwandisa ukuxhathisa kwi-post{2}}brazing corrosion.

4. INdibano enguNdoqo (Iityhubhu -Ukupakishwa kweFin)

Iityhubhu ezisicaba kunye namaphiko zidityanisiwe zibe "ngumbindi wokutshintshiselana kobushushu"{0}}iyunithi esisiseko esebenzayo.

Ukupakishwa kweLayered: Iityhubhu ezisicaba zilungelelaniswe ngokunxuseneyo, kunye namaphiko afakwe phakathi kweityhubhu ezijongeneyo ukwenza isangweji{0}}efana nesakhiwo. Izithinteli zexeshana zibamba indibano ukuze kuthintelwe ukungahambi kakuhle.

Ulawulo lweGap: Umsantsa phakathi kweetyhubhu kunye namaphiko ugcinwe kuwo<0.05 mm to ensure full contact during brazing, minimizing thermal resistance at the interface.

5. Ukuxutyushwa kweVacuum (UkuDityaniswa kweThermal)

Ivacuum brazing linyathelo elibalulekileyo elibophelela ngokusisigxina iityhubhu ezisicaba kunye neefins kwindawo evuzayo-embindini oqinileyo{1}}ngokungafaniyo nesoldering yakudala, iqinisekisa ukomelela okuphezulu kolwakhiwo kunye nokuqhutywa kobushushu.

Isicelo seFlux: Umaleko obhityileyo we-aluminiyam-i-silicon (Al-}Si) i-brazing flux (indawo yokunyibilika ~ 577 degree) iyafafazwa okanye ifakwe kwi-core edibeneyo ukukhusela i-oxidation ngexesha lokufudumeza.

Ukwenziwa kweVacuum Furnace: Ingundoqo ifakwe kwi-vacuum furnace (uxinzelelo<10⁻³ Pa) and heated to 580–620°C. At this temperature, the flux melts and flows along the tube-fin interfaces, while the aluminum base material remains solid. The vacuum environment eliminates air bubbles, ensuring uniform brazing.

Ukupholisa: Isithando somlilo sipholile ngokukhawuleza (i-50-100℃/ iyure) ukunciphisa uxinzelelo lwe-thermal, ukukhusela i-microcracks kwi-microchannels.

6. Cutting & Port Machining

I-core brazed icutshungulwa ukongeza izibuko zokudibanisa kwi-fluid inlet / outlet.

Ukusika Okungundoqo: Isarha ye-CNC isika undoqo ukuya kubungakanani bokugqibela bemveliso (umzekelo, 300×400 mm yeeMCHEs zesikhenkcisi), kunye nesipholisi esisetyenziselwa ukuthintela ubushushu{4}}obudala ukonakala.

Ukugrunjwa kwePort & Ukucofa: Iziphelo zeetyhubhu ezisicaba zigrunjwe ukwenza amazibuko amaninzi, emva koko ucofe ukongeza imisonto (umzekelo, i-M10 okanye i-1/4 NPT) yokudibanisa imigca yefriji. Izixhobo zokukhupha iintsimbi zisusa iintsimbi zokuthintela ukuvaleka kwemijelo.

7. Uvavanyo loxinzelelo kunye nokufunyanwa kokuvuza

Ii-MCHEs zifuna ukuvuza okungqongqo-ukuqina (kubaluleke kakhulu kwisikhenkcisi{1}esekwe kwi-aplikeshini ezifana ne-AC okanye ifriji).

Uvavanyo loxinzelelo: The core is filled with high-pressure nitrogen (1.5–2 times the design working pressure, typically 2–3 MPa) and held for 30–60 minutes. Pressure gauges monitor for drops-any loss >I-0.01 MPa ibonisa ukuvuza.

Ukufunyanwa kokuvuza kweHelium: Kusetyenziso oluphezulu- oluchanekileyo (umzekelo, i-automotive AC), i-helium mass spectrometry isetyenziselwa ukubona izinto ezincinci{3}}ezivuzayo (ubuntununtunu ezantsi ukuya ku-1×10⁻⁹ Pa·m³/s).

8. Unyango loMphezulu kunye noThintelo{1}}loKutyabeka (Ngokuzithandela)

KwiiMCHEs ezisetyenziswa kwindawo ezirhabaxa (umzekelo, elwandle okanye{2}}iisetingi zokufuma eziphezulu), ukhuseleko lokutya olongezelelweyo luyasetyenziswa:

Isicelo sokugquma: I-Phenolic resin, i-epoxy, okanye i-fluoropolymer coatings ifafazwe okanye i-electrophoresed kwi-core surface. Ubunzima bokugquma bulawulwa kwi-20-50 μm ukulinganisa ukuxhathisa kwe-corrosion kunye nokusebenza kakuhle kokudluliselwa kobushushu.

Ukunyanga: Ingundoqo edibeneyo ibhaka kwi-120-180 i-degree ye-30-60 imizuzu yokunyanga i-coating, yenza i-dense, i-layer engabonakaliyo.

9. Ukuhlolwa koMgangatho wokuGqibela kunye nokuPakisha

Uvavanyo oluBanzi: Abahloli bajonga imilinganiselo (ngokulungelelanisa oomatshini bokulinganisa), (ukwenzela iziphene zokubethelwa njengeentanda okanye iintsalela eziguquguqukayo), kwaye benze iimvavanyo ezifanelekileyo zokufudumeza ubushushu (ukusebenzisa itonela yomoya ukulinganisa izinga lokutshintsha kobushushu phantsi kweemeko eziqhelekileyo).

Ukupakishwa: Ii-MCHE ezifanelekileyo zisongelwe kukufuma{0}}ifilimu yobungqina kwaye zipakishwe kugwebu{1}}kwiibhokisi ezinemigca ukunqanda umonakalo ngexesha lothutho.

Le nkqubo iqinisekisa ukuba ii-MCHEs zihlangabezana neemfuneko zokusebenza ezingqongqo kwizicelo ezifana nefriji yorhwebo, i-automotive air conditioning, kunye ne-HVAC systems{0}}ibhalansi esebenzayo, ukubumbana, kunye nokuthembeka.

I-HYLITA ixhotyiswe ngemveliso ezenzekelayo ngokupheleleyo kunye nemigca yokuhlanganisana, imigca yokuvelisa i-automated brazing, kunye nemigca yokuvavanya ukuvuza kwe-helium ezenzekelayo.

1. Izixhobo zeNdibano eziziSebenzisayo

IZitampu eziziSebenzisa ngokupheleleyo kwiiNgxelo eziphambiliOkukhokelela ekunyukeni kwama-49% ekuthembekeni komgangatho kunye nophuculo lwama-67% ekuboneleleni ngobuchule bezinto ezingezizo{2}}eziqhelekileyo.

Ukuzenzekela Ngokupheleleyo Imizila yeNdibano yeMveliso egqityiweyoUkwenza unyuso lwama-51% ekusebenzeni kakuhle kwendibano kunye nokuphucula uzinzo lomgangatho ukuya kuma-99.8%.

2. IziXhobo zokuNxuluma eziZisebenzela ngokupheleleyo

Imigca yeMveliso eZisebenzelayo ngokupheleleyo eneTonela{0}}Uhlobo lweeFurnaces zeBrazingOkukhokelela ekunyukeni kwe-53% ekuthembekeni komgangatho, kunye nezinga lokupasa kweemveliso ezigqityiweyo ezigqityiweyo zifikelela kwi-99.7%.

Imigca yeMveliso eSebenzayo ngokuPheleleyo kunye neFurnaces yeVacuum BrazingUkuzuza ukunyuka kwe-57% ekuthembekeni komgangatho, kunye nezinga lokupasa kweemveliso ezigqityiweyo ezigqityiweyo zifikelela kwi-99.7%.

3. IZixhobo zoVavanyo eziziSebenzisiweyo ngokuPheleleyo

IZityalo zokuVelisa uMphezulu eziziSebenzisa ngokupheleleyoUkunikezela nge-55% yokuphucula ukuthembeka komgangatho, kunye nezinga lokupasa kweemveliso ezigqityiweyo ezigqityiweyo zifikelela kuma-99.8%.

Imigca yokuVavanya i-Vacuum ye-Helium yokuvuza ngokupheleleyoI-100% yazo zonke iimveliso zifumana uvavanyo lokuvuza kwe-vacuum helium, iqinisekisa i-100% yezinga lesiqinisekiso sovavanyo lokuvuza kwe-helium ngaphambi kokunikezelwa.

Iifayile ezishisayo: Umatshini wokuhlamba owomisa i-microchannel condenser, umatshini wokuhlamba waseTshayina owomisa i-microchannel condenser abavelisi, ababoneleli, umzi-mveliso