Microchannel coils (Mches) a wɔyɛ no .

MCHE ahorow a wɔyɛ no yɛ pɛpɛɛpɛ-akwan a wɔfa so yɛ ade a ɛka nneɛma ho nyansahu, extrusion molding, ne thermal joining technologies bom, a wɔayɛ no sɛnea ɛbɛyɛ a ɛbɛyɛ ultra-nsu a ɛsen fa akwan nketewa so (0.1–2 mm) ma ɔhyew a ɛkɔ so yiye. Anamɔn titiriw no ne nea edidi so yi:

1. Aluminum alloy nneɛma ahosiesie .

MCHEs titiriw na ɛde aluminum alloys (sɛ nhwɛso no, 3003, 6061) di dwuma esiane sɛ ɛyɛ mmerɛw, ɔhyew a ɛkɔ soro, ne ɛka a wɔbɔ-etu mpɔn nti.

Nneɛma a wɔpaw .: Wɔde aluminum ingots a ɛkorɔn-Purity fra nneɛma a wɔde afrafra (magnesium, silicon) de ma mfiridwuma mu ahoɔden ne nsɛe a ɛko tia no yɛ kɛse, na ɛne ASTM B209 anaa EN 573-3 gyinapɛn ahorow hyia.

Preprocessing .: Wɔtew ingOT ani (a wɔde alkaline cleaners di dwuma) na wɔde pickled (a nitric acid a ɛyɛ mmerɛw wom) yiyi oxides, ngo, anaa efĩ-a ɛho hia kɛse ma wɔde hwɛ hu sɛ extrusion ne brazing quality yɛ pɛ akyiri yi.

2. Microchannel flat tube a wɔde hyɛ mu .

Saa anammɔn yi yɛ "core" a ɛwɔ mches: flat tubes a ɛwɔ parallel microchannels pii.

Extrusion nhyehyɛe .: Wɔnam hydraulic press so na ɛpia aluminum alloy billet a ɛyɛ hyew (450–500℃) fa pɛpɛɛpɛ-engineered die (a microchannel-asubura a wɔayɛ no sɛnea ɛte) no mu. Die nhyehyɛe no kyerɛ ɔkwan no kɛse tẽẽ (mpɛn pii no .<1 mm for high-efficiency models) and distribution.

Size Calibration .: Wɔma tube a ɛyɛ tratraa a wɔabɔ no no yɛ nwini ntɛmntɛm (ɛnam mframa anaa nsu a ɛredum so) ma ɛkɔ so gyina pintinn, afei wotwa no kɔ ne tenten a wɔhwehwɛ no mu (fi 0.5 m kosi 6 m, a egyina sɛnea wɔde di dwuma so).

Quality Check .: Laser micrometers verify channel diameter, fasuo no mu duru, ne flatness-Tolerances no yɛ nea wɔhwɛ so wɔ ±0.02 mm mu na amma nsuo a ɛsen no ntumi nnyina.

3. fins stamping & sɛnea wɔyɛ .

Wɔde fins gu nsu a ɛyɛ tratraa no mu ma ɛtrɛw ɔhyew a ɛkɔ soro no mu (ade titiriw a ɛma MCHE yɛ adwuma yiye).

Stamping nhyehyɛe .: Wɔde aluminum nkrataa (0.1–0.2 mm a ne kɛse yɛ) ma no kɔ pɛpɛɛpɛ stamping press mu de yɛ fin patterns-a wɔayɛ no foforo no bi ne louvered fins (ma mframa a ɛkɔ soro turbulence) anaasɛ corrugated fins (ma compactness).

Pre-Aduru a wɔde kata so .: fins betumi akɔ soro ayaresa (sɛ nhwɛso no, chromate nsakrae coating) ma adhesion a ɛne brazing flux no tu mpɔn na ɛma post-brazing corrosion resistance.

4. Nhyiam titiriw (tube-fin stacking) .

Wɔaboaboa nsuo a ɛyɛ tratraa ne ntini a ɛyɛ tratraa ano ayɛ no "ɔhyew a wɔde sesa nneɛma a ɛwɔ mu"-adwumayɛ fã titiriw no.

Layered stacking .: Wɔde nsukorade a ɛyɛ tratraa no hyia wɔ nsɛso mu, na wɔde nhama a ɛwɔ nhama a ɛbɛn ntam no hyɛ mu ma ɛyɛ sandwich-te sɛ nhyehyɛe. Bere tiaa mu nhama no kura nhyiam no mu na amma wɔantumi ansiw ano.

gap sohwɛ .: Wɔde nsonsonoe a ɛda tubes ne fins ntam no sie .<0.05 mm to ensure full contact during brazing, minimizing thermal resistance at the interface.

5. vacuum brazing (ɔhyew a ɛka bom) .

Vacuum brazing yɛ anammɔn a ɛho hia a ɛma tubes ne fins a ɛyɛ tratraa no bom daa kɔ leak-tight core-ɛnte sɛ atetesɛm soldering, ɛhwɛ hu sɛ structure ahoɔden a ɛkorɔn ne thermal conductivity.

Flux a wɔde di dwuma .: Wɔde aluminium a ɛyɛ tratraa-silicon (Al-Si) brazing flux (melting point ~577℃) petepete so anaasɛ wɔde gu core a wɔaboaboa ano no so na amma oxidation asiw bere a ɛreyɛ hyew no ano.

Nneɛma a wɔde yɛ fononoo a wɔde yɛ vacuum .: Wɔde core no gu vacuum fononoo mu (nhyɛso .<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.

Onwini .: Wɔma fononoo no yɛ nwini nkakrankakra (50–100℃/hour) na ama ɔhyew mu nhyɛso so atew, na esiw microcracks a ɛwɔ microchannels no mu ano.

6. twitwa & hyɛn gyinabea mfiridwuma .

Wɔyɛ brazed core no ho adwuma de ka connection ports ho ma fluid inlet/outlet.

Core a wɔde twa .: CNC saw twa core no mu kɔ ade a etwa to no kɛse (sɛ nhwɛso no, 300×400 mm ma aguadi freezer mches), a coolant di dwuma de kwati ɔhyew-deformation.

Port drilling & tapping .: Wɔtutu nsuo a ɛyɛ tratraa no ano ma ɛyɛ ports a ɛwɔ manifold, afei wɔde tap ka ho ma ɛde nhama (sɛ nhwɛso no, M10 anaa 1/4 NPT) ka ho de ka frigye nhama no bom. Nnwinnade a wɔde yi fi hɔ no yi dade a wɔde yɛ nneɛma no fi hɔ na amma nsu kwan no asiw kwan.

7. Nhyɛso sɔhwɛ & nsu a ɛtwetwe .

MCHE ahorow hwehwɛ sɛ nsu no twetwe denneennen-ɛbɔ denneennen (ɛyɛ nea ɛho hia ma frigye-aplikeshɔn a egyina so te sɛ AC anaa Fridge).

Nhyɛso sɔhwɛ .: 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 kyerɛ sɛ ɛretu.

Helium a ɛtwetwe nsu .: Sɛ wopɛ sɛ wohu nneɛma a ɛwɔ soro-precision applications (sɛ nhwɛso no, Automotive AC) a, wɔde helium mass spectrometry di dwuma de hu micro-akwantu (nkate a ɛkɔ fam kodu 1×10⁻⁹ Pa·m3/s).

8. Asase ani ayaresa & anti-corrosion coating (wopɛ) .

MCHE ahorow a wɔde di dwuma wɔ mmeae a ɛyɛ den (sɛ nhwɛso no, po so anaa nea ɛkorɔn-nnyigyei nhyehyɛe) no, wɔde ahobammɔ foforo a ɛbɔ ho ban di dwuma:

Nneɛma a wɔde kata so .: Wɔde phenolic resin, epoxy, anaa fluoropolymer a wɔde kata so no petepete so anaasɛ wɔde anyinam ahoɔden petepete so. Wɔhwɛ coating thickness no so wɔ 20–50 μm de kari pɛ corrosion resistance ne ɔhyew transfer efficiency.

Ayaresa .: Wɔto core a wɔakata so no wɔ 120–180℃simma 30–60 de sa ade a wɔde akata so no, na ɛyɛ ade a ɛyɛ den, a entumi nkɔ mu.

9. Final Quality Inspection & Packaging .

Sɔhwɛ a ɛkɔ akyiri .: Nhwehwɛmufoɔ hwɛ nsusuiɛ (ɛnam mfiri a wɔde susu nneɛma so), (ma brazing sintɔ te sɛ mpaapaemu anaa nsuo a ɛfiri nsuo mu nkaeɛ), na wɔyɛ ɔhyew a wɔde kɔ baabi foforɔ ho sɔhwɛ a wɔanhyɛ da (wɔde mframa kwan bi di dwuma de susu ɔhyew nsakraeɛ wɔ tebea a ɛwɔ hɔ mu).

Nneɛma a wɔde kyekyere nneɛma ho .: Wɔde mches a ɛfata no abɔ mu wɔ nsuo mu{0}}adanseɛ sini na wɔde ahyɛ mu ma wɔ foam-nsɛmfua a wɔde ahyɛ mu ma mu na amma asɛe bere a wɔde rekɔ no.

Saa kwan yi hwɛ ma MCHE ahorow no di adwumayɛ ho ahwehwɛde a emu yɛ den a ɛfa dwumadie te sɛ aguadi mu frigye, kar mframa a wɔde yɛ adwuma, ne HVAC nhyehyɛeɛ-balancing efficiency, compactness, ne ahotosoɔ ho.

Hylita no yɛ nea wɔde afiri a wɔde yɛ nneɛma a ɛyɛ adwuma koraa ne nhama a wɔde yɛ adwuma, brazing nhama a wɔde yɛ adwuma koraa, ne helium leak testing lines a ɛyɛ adwuma ankasa koraa ahyɛ mu.

1. Mfiri a wɔde yɛ nneɛma a wɔde yɛ adwuma koraa .

Stamping lines a wɔde di dwuma wɔ ɔkwan a ɛyɛ adwuma so koraa ma nneɛma atitiriw a ɛwɔ mu .Nea ɛde ba ne 49% nkɔanim wɔ su mu ahotoso mu ne 67% nkɔso wɔ supply efficiency a ɛnyɛ{2}}standard components.

Nneɛma a wɔde yɛ nneɛma a wɔayɛ no nyinaa a wɔde di dwuma wɔ ɔkwan a ɛyɛ adwuma so koraa .a ɛma 51% nya nkɔanim wɔ nhyiam no mu yiye na ɛma ɛyɛ papa sɛ ɛbɛma nneɛma ayɛ yiye akodu 99.8%.

2. Brazing mfiri a ɛyɛ adwuma koraa .

Nneɛma a wɔde yɛ nneɛma a ɛyɛ adwuma koraa a ɛwɔ tunel-Type brazing fononoo .a ɛde 53% kɔ soro wɔ ahotoso a ɛyɛ papa mu, a pass rate a brazed finished products no adu 99.7%.

Nneɛma a wɔde yɛ adwuma a ɛyɛ adwuma wɔ afiri a wɔde yɛ vacuum brazing mu koraa .Sɛ wonya nya nkɔanim 57% wɔ ahotoso a ɛyɛ papa mu, a pass rate a ɛwɔ brazed finished products no du 99.7%.

3. Nneɛma a wɔde kata ade so/sɔ hwɛ koraa .

Nneɛma a wɔde kata ɔfasu so a ɛyɛ adwuma koraa .de nkɔsoɔ 55% wɔ ahotosoɔ a ɛyɛ papa mu, a pass rate a coated finished products no adu 99.8%.

Nneɛma a wɔde yɛ vacuum helium leak sɔhwɛ nhama a ɛyɛ adwuma koraa .Nneɛma nyinaa mu 100% kɔ vacuum helium leak testing mu, na ɛhwɛ ma 100% qualification rate ma helium leak testing ansa na wɔde ama.

Tags a ɛyɛ hyew .: Afiri a wɔde horo nneɛma a wɔde hohoro microchannel condenser, China Afiri a wɔde horo nneɛma a wɔde hohoro nneɛma nketenkete a wɔde hohoro nneɛma nketenkete, wɔn a wɔde nneɛma ma, adwumayɛbea