Muaj ntau txoj hauv kev tub yees, thiab cov hauv qab no feem ntau siv:
1. Ua kua vaporization tub yees
2. Gas expansion thiab tub yees
3. Vortex tube tub yees
4. Thermoelectric txias
Ntawm lawv, kua vaporization tub yees yog siv dav tshaj plaws.Nws siv cov nyhuv nqus dej ntawm cov kua vaporization kom ua tiav cov tub yees.Vapor compression, absorption, vapor txhaj thiab adsorption tub yees yog tag nrho cov kua vaporization tub yees.
Vapor compression refrigeration belongs rau theem hloov tub yees, uas siv cov cua sov nqus cov nyhuv thaum lub tub yees hloov ntawm cov kua rau roj kom tau txais lub zog txias. Nws yog tsim los ntawm plaub ntu: compressor, condenser, throttling mechanism thiab evaporator.Lawv txuas nyob rau hauv lem los ntawm cov kav dej los tsim ib tug kaw system.
Main tub yees Cheebtsam thiab accessories
1. Compressor
Compressors muab faib ua peb hom: qhib hom, semi-qhib hom, thiab kaw hom.Lub luag haujlwm ntawm lub compressor yog nqus cov cua kub qis los ntawm sab evaporator, thiab compress nws mus rau hauv high-pressure, high-temperature refrigerant vapor thiab xa mus rau lub condenser.
2.Condenser
Lub condenser yog cov khoom siv hluav taws xob sib pauv uas hloov cov tub yees muaj peev xwm ntawm cov evaporator hauv lub tub yees ua ke nrog kev ua haujlwm ntawm compressor mus rau ib puag ncig nruab nrab (dej los yog cua).Raws li txoj kev ua kom txias, lub condenser tuaj yeem muab faib ua cua txias, dej txias thiab evaporative. Lub condenser yog cov khoom siv hluav taws xob sib pauv uas hloov cov tub yees muaj peev xwm ntawm cov evaporator hauv lub tub yees ua ke nrog kev ua haujlwm ntawm compressor mus rau ib puag ncig nruab nrab (dej los yog cua).Raws li txoj kev ua kom txias, lub condenser tuaj yeem muab faib ua cua txias, dej txias thiab evaporative.
3. Evaporator
Lub evaporator txhais tau hais tias cov refrigerant kua boils thiab nqus cov cua sov ntawm cov cua txias nruab nrab (cua los yog dej) ntawm qhov kub thiab txias kom ua tiav lub hom phiaj ntawm lub tub yees.
4. Solenoid valve
Solenoid valve yog ib hom kaw-off valve uas tau qhib los ntawm kev tswj hluav taws xob.Nws feem ntau yog ntsia rau ntawm qhov system pipeline kom hloov mus rau thiab tawm ntawm lub actuator ntawm ob txoj hauj lwm regulator ntawm lub tub yees system pipeline.Lub solenoid valve feem ntau yog ntsia nruab nrab ntawm lub expansion valve thiab condenser. Qhov chaw yuav tsum nyob ze li sai tau rau lub expansion valve, vim hais tias lub expansion valve tsuas yog ib qho throttling lub caij thiab tsis tuaj yeem kaw los ntawm nws tus kheej, yog li lub solenoid valve yuav tsum tau siv los txiav tawm cov kav dej.
5.Thermal expansion valve
Cov khoom siv tub yees feem ntau siv thermal expansion li qub los kho cov tub yees txaus.Nws tsis yog tsuas yog lub regulating valve uas tswj cov kua dej ntawm lub evaporator, tab sis kuj lub throttle valve ntawm lub tub yees.Lub thermal expansion valve siv qhov kev hloov pauv hauv superheat ntawm cov tub yees ntawm qhov hluav taws xob ntawm cov evaporator los kho cov kua dej.Lub thermal expansion valve yog txuas nrog cov kua inlet yeeb nkab ntawm lub evaporator, thiab lub ntsuas kub ntsuas qhov muag tau muab tso rau ntawm lub qhov hluav taws xob evaporator (qhov hluav taws xob) yeeb nkab.Nws feem ntau muab faib ua cov qauv sib txawv raws li cov qauv ntawm thermal expansion valve:
(1) Internally balanced thermal expansion valve;
(2) Sab nraud sib npaug thermal expansion valve.
Internally balanced thermal expansion valve: Nws yog tsim los ntawm qhov ntsuas kub ntsuas qhov muag, lub raj capillary, lub rooj zaum valve, diaphragm, ejector pas nrig, valve koob thiab kho mechanism.Internally balanced thermal expansion li qub feem ntau yog siv nyob rau hauv me me evaporators.
Externally balanced thermal expansion valve: Externally balanced thermal expansion valve Rau evaporators nrog cov kav dej ntev los yog ntau dua kev tiv thaiv, sab nraud sib npaug thermal expansion li qub feem ntau siv.Rau cov evaporator ntawm tib qhov loj me, ib qho kev sib npaug sab hauv kev nthuav dav tuaj yeem siv tau thaum siv rau hauv qhov chaw cia khoom kub, thaum lub qhov sib npaug sab nraud tuaj yeem siv tau thaum siv hauv qhov chaw cia khoom qis.Rau cov evaporator ntawm tib qhov loj me, ib qho kev sib npaug sab hauv kev nthuav dav tuaj yeem siv tau thaum siv rau hauv qhov chaw cia khoom kub, thaum lub qhov sib npaug sab nraud tuaj yeem siv tau thaum siv hauv qhov chaw cia khoom qis.
6. Roj separator
Cov roj separator feem ntau yog ntsia nruab nrab ntawm lub compressor thiab lub condenser kom cais lub tub yees tshuab roj entrained nyob rau hauv lub refrigerant vapor.Cov khoom siv roj rov qab yog siv los xa rov qab lub tshuab tub yees cov roj rau lub crankcase ntawm compressor;cov qauv siv feem ntau ntawm cov roj separator muaj ob hom: hom centrifugal thiab lim hom.
7. Gas-kua cais
Cais cov roj refrigerant los ntawm cov kua refrigerant los tiv thaiv lub compressor los ntawm cov kua rauj;khaws cov kua refrigerant hauv lub tub yees lub voj voog, thiab kho cov kua dej raws li qhov kev hloov pauv.
8. Lub pas dej
Los ntawm kev teeb tsa lub accumulator, lub peev xwm khaws cov kua ntawm lub accumulator tuaj yeem siv los sib npaug thiab ua kom ruaj khov ntawm cov tub yees hauv lub cev, kom lub tshuab tub yees nyob rau hauv ib txwm ua haujlwm.Lub accumulator feem ntau yog teem nruab nrab ntawm lub condenser thiab lub throttling caij.Yuav kom cov kua refrigerant nyob rau hauv lub condenser nkag mus rau hauv lub accumulator smoothly, txoj hauj lwm ntawm lub accumulator yuav tsum qis dua lub condenser.
9. Lub tshuab ziab khaub ncaws
Txhawm rau kom ntseeg tau qhov kev ua haujlwm zoo ntawm cov tub yees, lub tub yees yuav tsum tau khaws cia kom huv thiab qhuav.Lub tshuab lim dej feem ntau yog ntsia ua ntej lub caij throttling.Thaum cov kua refrigerant thawj zaug dhau los ntawm lub lim kom qhuav, nws tuaj yeem tiv thaiv kom tsis txhob txhaws hauv lub throttling.
10. Pom iav
Nws yog tsuas yog siv los qhia txog cov xwm txheej ntawm cov tub yees hauv cov kav dej ua kua ntawm lub tub yees thiab cov ntsiab lus dej hauv cov tub yees.Feem ntau, cov xim sib txawv yog cim rau ntawm qhov pom ntawm lub iav kom pom cov ntsiab lus dej ntawm cov tub yees hauv qhov system.
11. High thiab tsawg voltage relay
Yog hais tias lub compressor tso tawm siab dhau lawm, nws yuav cia li disconnect, nres lub compressor thiab tshem tawm qhov ua rau ntawm lub siab siab, thiab manually reset pib lub compressor (fault + tswb);thaum lub tshuab nqus tsev siab poob mus rau qis qis, nws yuav txiav tawm.Nres lub compressor, thiab energize lub compressor dua thaum lub suction siab nce mus rau sab sauv txwv.
12. Differential roj siab relay
Cov hluav taws xob hloov hluav taws xob uas siv lub siab sib txawv ntawm qhov nqus thiab tawm ntawm cov roj lubricating twj tso kua mis raws li lub teeb liab tswj, thaum lub siab sib txawv tsawg dua li tus nqi teev, nres lub compressor los tiv thaiv nws.
13. Kub relay
Siv qhov kub thiab txias ua lub teeb liab tswj kom tswj qhov kub ntawm qhov txias cia.Qhov pib thiab nres ntawm lub compressor tuaj yeem tswj tau ncaj qha los ntawm kev tswj lub rau thiab tawm ntawm cov kua dej solenoid valve;Thaum ib lub tshuab muaj ntau lub tsev txhab nyiaj, qhov kub thiab txias relays ntawm txhua lub txhab nyiaj tuaj yeem txuas nrog tib lub sijhawm los tswj qhov pib tsis siv neeg thiab nres ntawm compressor.
14. Cov tub yees
Cov tub yees, tseem hu ua refrigerants thiab refrigerants, yog cov ntaub ntawv xov xwm siv nyob rau hauv ntau lub tshuab cua sov kom ua tiav lub zog hloov dua siab tshiab.Cov tshuaj no feem ntau siv cov theem hloov pauv hloov tau (xws li roj-kua theem hloov pauv) kom muaj zog.
15. Lub tub yees roj
Kev ua haujlwm ntawm lub tub yees tshuab roj yog tsuas yog lubricate, foob, txias thiab lim.Nyob rau hauv ntau lub tog raj kheej compressors, lubricating roj kuj siv tau los tswj lub unloading mechanism.
Post lub sij hawm: Nov-15-2021