Njira Yopangira Ma Coils a Microchannel (MCHEs)
Kupanga ma MCHE ndi njira yolondola-yomwe imagwirizanitsa sayansi ya zinthu, kuumba zinthu, ndi matekinoloje olowa m'malo otentha, okonzedwa kuti apange ma tchanelo ang'onoang'ono ({1}}) ang'onoang'ono (0.1-2 mm) kuti azitha kutentha bwino. Njira zazikuluzikulu ndi izi:
1. Kukonzekera kwa Aluminium Alloy Material
Ma MCHE amagwiritsa ntchito ma aluminiyamu aloyi (monga 3003, 6061) chifukwa cha kupepuka kwake, kukhathamiritsa kwake kwamphamvu kwambiri, komanso mtengo-wogwira ntchito bwino.
Kusankha Zinthu: -zingwe za aluminiyamu zoyera zimasakanizidwa ndi zinthu zophatikizika (magnesium, silicon) kuti ziwonjezere mphamvu zamakina komanso kusachita dzimbiri, kukwaniritsa miyezo ya ASTM B209 kapena EN 573-3.
Kukonzekeratu: Malo a ingot amadetsedwa (pogwiritsa ntchito zotsuka zamchere) ndi kuzifutsa (ndi dilute nitric acid) kuti achotse ma oxide, mafuta, kapena zosafunika-zofunika kwambiri kuti atsimikizire kuti yunifolomu imatuluka ndi kuyanika bwino pambuyo pake.
2. Microchannel Flat Tube Extrusion
Gawo ili limapanga "pachimake" cha ma MCHE: machubu athyathyathya okhala ndi ma microchannel angapo ofanana.
Kupanga kwa Extrusion: Chotenthetsera cha aluminiyamu alloy billet (450–500 digiri ) chimakankhidwa kupyola-engineered die (yokhala ndi microchannel-zobowo zooneka) kudzera pa hydraulic press. Mapangidwe amafa amatengera kukula kwa tchanelo (nthawi zambiri<1 mm for high-efficiency models) and distribution.
Kuwongolera Kukula: The extruded lathyathyathya chubu utakhazikika mofulumira (kudzera mpweya kapena madzi quenching) kusunga dimensional bata, ndiye kudula kwa utali wofunika (kuchokera 0.5 m kuti 6 m, malinga ndi ntchito).
Kuwona Kwabwino: Laser micrometers amatsimikizira kukula kwa tchanelo, makulidwe a khoma, ndi kusalala-kupirira kumayendetsedwa mkati mwa ± 0.02 mm kupewa kusagwirizana kwa kayendedwe kake.
3. Zipsepse Stamping & Kupanga
Zipsepse zimawonjezedwa pamachubu athyathyathya kuti akulitse malo otengera kutentha (chinthu chofunikira kwambiri pakuchita bwino kwa MCHE).
Njira ya Stamping: Mashiti a aluminiyamu (0.1–0.2 mm wokhuthala) amalowetsedwa mu makina osindikizira olondola kwambiri kuti apange mawonekedwe a zipsepse{2}}zodziwika bwino zimaphatikizapo zipsepse zopindika (zowonjezera phokoso la mpweya) kapena zipsepse zamalata (zolumikizana).
-Kuchiza Kupaka: Zipsepse zitha kuchitidwa mankhwala opangidwa ndi pamwamba (monga ma chromate conversion coating) kuti azitha kumamatira ndi brazing flux ndikuthandizira kuti ma post-asamachite dzimbiri.
4. Core Assembly (Tube-Fin Stacking)
Machubu athyathyathya ndi zipsepse amalumikizidwa kukhala "chosinthanitsa ndi kutentha"-chinthu chofunikira kwambiri.
Layered Stacking: Machubu athyathyathya amalumikizidwa molumikizana, ndipo zipsepsezo zimayikidwa pakati pa machubu oyandikana kuti apange sangweji-ngati kapangidwe kake. Makapu akanthawi amapangitsa msonkhanowo kuti usamayende bwino.
Gap Control: Kusiyana pakati pa machubu ndi zipsepse zimasungidwa<0.05 mm to ensure full contact during brazing, minimizing thermal resistance at the interface.
5. Vacuum Brazing (Kujowina kwa Thermal)
Vacuum brazing ndiye gawo lofunika kwambiri lomwe limalumikiza machubu athyathyathya ndi zipsepse kuti zidonthe-pakatikati pothina-mosiyana ndi ma soldering akale, amaonetsetsa kuti machubu azing'ambika komanso zipsepsezo zikhale zolimba.
Pulogalamu ya Flux: Aluminium yopyapyala-silicon (Al-Si) brazing flux (melting point ~577 degrees ) imapoperapo kapena kuviika pachimake chomwe chalumikizidwa kuti chiteteze kutulutsa okosijeni panthawi yotentha.
Vacuum Furnace Processing: Pakatikati pake amayikidwa mu ng'anjo yopanda vacuum (pressure<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.
Kuziziritsa: Ng'anjoyo imakhazikika pang'onopang'ono (50-100 digiri / ola) kuti muchepetse kupsinjika kwa kutentha, kuteteza microcracks mu microchannels.
6. Kudula & Port Machining
Pakatikati mwa brazed amakonzedwa kuti awonjezere madoko olumikizira amadzimadzi / potuluka.
Kudula Kwambiri: Macheka a CNC amadula pakati mpaka kukula kwa chinthu chomaliza (monga 300×400 mm kwa ma MCHE afiriji), ndi choziziritsa kukhosi chomwe chimagwiritsidwa ntchito kupewa kutentha-kuwonongeka kochititsa.
Kubowola pa Port & Tapping: Malekezero a machubu athyathyathya amabowoleredwa kuti apange madoko angapo, kenako amakhomedwa kuti awonjezere ulusi (mwachitsanzo, M10 kapena 1/4 NPT) polumikiza mizere ya refrigerant. Zida zowononga zimachotsa zitsulo zometa kuti mupewe kutsekeka kwa njira.
7. Kuyesa Kupanikizika & Kuzindikira Kutayikira
Ma MCHE amafunikira kudontha kwambiri-kulimba (kofunikira pafiriji{{1}zogwiritsa ntchito ngati AC kapena firiji).
Mayeso a Pressure: 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 >0.01 MPa ikuwonetsa kutayikira.
Kuzindikira kwa Helium Leak: Pogwiritsa ntchito-zolondola kwambiri (monga galimoto ya AC), helium mass spectrometry imagwiritsidwa ntchito pozindikira kuchucha pang'ono-(kukhudzika mpaka 1×10⁻⁹ Pa·m³/s).
8. Kuchiza Pamwamba & Kuletsa-Kupaka Kutentha (Mwasankha)
Kwa ma MCHE omwe amagwiritsidwa ntchito m'malo ovuta (monga m'madzi kapena -pachinyezi chambiri), chitetezo chowonjezera cha dzimbiri chimayikidwa:
Coating Application: Phenolic resin, epoxy, kapena zokutira za fluoropolymer ndi zopopera kapena zojambulidwa ndi electrophores pakatikati. Makulidwe okutira amawongoleredwa pa 20-50 μm kuti azitha kukana dzimbiri komanso kusamutsa kutentha.
Kuchiritsa: Chimake chophimbidwa chimawotcha pa madigiri 120-180 kwa mphindi 30-60 kuti chichiritse chophimbacho, ndikupanga wosanjikiza, wosanjikiza.
9. Final Quality Inspection & Packaging
Kuyesa Kwathunthu: Oyang'anira amayang'ana kukula kwake (kudzera pamakina oyezera), (pazowonongeka zowotcha ngati ming'alu kapena zotsalira za flux), ndikuyesa kuyesa kusamutsa kutentha mwachisawawa (pogwiritsa ntchito ngalande yamphepo kuyeza kutentha kwanyengo pansi pamikhalidwe yoyenera).
Kupaka: Ma MCHE oyenerera amakutidwa ndi chinyezi-filimu yotsimikizira kuti sangagwire ntchito ndipo amapakidwa thovu{1}}makatoni okhala ndi mizere kuti asawonongeke panthawi yamayendedwe.
Mchitidwewu umaonetsetsa kuti ma MCHE akwaniritsa zofunikira pakugwiritsa ntchito mapulogalamu monga firiji yamalonda, zoziziritsa mpweya zamagalimoto, ndi makina a HVAC-kulinganiza bwino zinthu, kulimba, ndi kudalirika.
HYLITA ili ndi makina opangira okha komanso mizere yophatikizira, mizere yodzipangira yokhayokha, komanso mizere yoyesera ya helium yotayikira.
1. Zida Zamsonkhano Zokhazikika Mokwanira
Mizere Yodziwikiratu Yokhazikika Pazigawo ZofunikiraZomwe zachititsa kuti 49% ionjezeke kudalirika kwa khalidwe ndi kuwongolera kwa 67% pakupereka mphamvu kwa-zigawo zosagwirizana.
Mizere Yophatikiza Yokhazikika Yokhazikika YokhazikikaKuthandizira kukwera kwa 51% pakuchita bwino kwa msonkhano ndikuwongolera bata mpaka 99.8%.
2. Zida Zodzipangira Zokha Zokha
Fully Automated Production Lines with Tunnel{0}}Type Brazing FurnacesKupangitsa kuti 53% ikweze kudalirika kwapamwamba, ndikupambana kwa zinthu zomalizidwa bwino kufika 99.7%.
Mizere Yopangira Makina Okhazikika yokhala ndi Vuto la Brazing FurnacesKupeza chiwonjezeko chodalirika cha 57%, ndikupambana kwa zinthu zomalizidwa bwino kufika 99.7%.
3. Zida Zodzitchinjiriza Zokhazikika / Zoyesera
Mizere Yopangira Zopangira Zopangira Pamwamba PamwambaKupititsa patsogolo kudalirika kwa 55%, ndikupambana kwa zinthu zomalizidwa kufika 99.8%.
Mizere Yoyeserera Yoyeserera ya Vacuum Helium Leak100% yazogulitsa zonse zimayesedwa kutayikira kwa vacuum helium, kuwonetsetsa kuti 100% yoyenerera pakuyezetsa kutayikira kwa helium isanaperekedwe.
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