Tub yees txoj cai ntawm finned evaporator

Lub tub yees compressor ntawm lub tub yees dav dav yog tsuas yog siv los nias lub zog qis rau hauv cov chav siab siab, yog li txo qhov ntim ntawm chav thiab ua kom lub siab.
Lub compressor nqus cov pa qis ntawm qhov nruab nrab ua haujlwm ntawm lub evaporator, nkag mus rau lub condenser tom qab lub siab, condenser condenser ntawm cov kua txias txias, lub valve throttles, ua cov kua qis, nkag mus rau hauv evaporator, Cov cua sov ntawm cov evaporator evaporates thiab dhau los ua ib qho chaw tsis tshua muaj siab, thiab tom qab ntawd nkag mus rau hauv qhov dej ntawm cov evaporator, yog li ua tiav. lub voj voog tub yees.
1. Lub hauv paus ntsiab lus ntawm chav compression tub yees.
Ib theem chav compression tub yees system yog tsim los ntawm plaub yam tseem ceeb: tub yees compressor, condenser, evaporator thiab throttle valve. Lawv txuas nrog cov kav dej, tsim lub kaw lus kaw uas cov tub yees txuas ntxiv mus tas li, hloov cov xeev thiab sib pauv cua sov nrog lub ntiaj teb sab nraud.
Cov kua refrigerant nyob rau hauv lub evaporator yog txias los ntawm cov khoom kom nqus cua sov, evaporates rau hauv qis kub thiab tsis tshua muaj siab chav, compressor, compressed rau hauv kub thiab siab siab chav rau hauv lub condenser, qhov nruab nrab txias ntawm lub condenser (dej los yog cua), Thaum tshav kub kub tso tawm, condensation ntawm high pressure kua, tsis tshua muaj kub thiab tsis tshua muaj siab refrigerant throttle, thiab dua mus rau hauv lub evaporator kom evaporate tshav kub, kom ua tiav lub hom phiaj ntawm kev ncig. tub yees. Ua li no, cov tub yees tuaj yeem ua tiav lub voj voog tub yees los ntawm plaub txheej txheem yooj yim: evaporation, compression, condensation, thiab throttling.
Nyob rau hauv lub tub yees system, evaporator, condenser, compressor thiab throttle valve yog plaub yam tseem ceeb ntawm lub tub yees system. Lub tub yees absorbs cua sov los ntawm lub cev txias kom ua tiav cov tub yees. Lub compressor yog lub plawv, uas ua rau nqus tau, compress thiab thauj cov tub yees vapors. Lub condenser yog ib yam khoom uas tso tawm cov cua sov los ntawm cov cua sov ntawm cov evaporator thiab cov cua kub ntawm lub compressor mus rau qhov nruab nrab cua txias. Lub throttle valve yog siv los tswj thiab tswj tus nqi ntawm cov kua refrigerant nkag mus rau hauv lub evaporator. Lub kaw lus tau muab faib ua ob ntu: sab siab siab thiab qis siab sab. Lub tshuab tub yees tiag tiag, ntxiv rau plaub yam saum toj no, feem ntau muaj qee cov khoom siv pabcuam, xws li solenoid li qub, cov khoom siv, cov tshuab ziab khaub ncaws, cov khoom siv, cov ntsaws ruaj ruaj, lub siab tswj thiab lwm yam khoom siv los txhim kho kev lag luam, kev cia siab thiab kev nyab xeeb.
2. Cov khoom tseem ceeb ntawm lub tub yees system.
Raws li daim ntawv condensing, lub condenser tuaj yeem muab faib ua ob hom: dej-txias thiab cua-txias, thiab raws li kev siv, nws tuaj yeem muab faib ua ob hom kev ua kom sov thiab cua txias, thiab kev sib xyaw ua ke yog tsim. ntawm cov khoom tseem ceeb hauv qab no.
Cov khoom tseem ceeb ntawm lub tub yees yog compressor, condenser, evaporator, expansion valve (los yog capillary, txias tswj valve), plaub-txoj kev valve, ob lub valve, kos valve, solenoid valve, siab hloov, ntsaws, tso zis siab tswj, tswj siab, cia tank, kub exchanger, collector, lim, tshuab ziab khaub ncaws, tsis siv neeg kaw, nres valve, kua slug txhaj, thiab lwm yam.
Cov khoom tseem ceeb ntawm lub tub yees yog compressor, condenser, evaporator, expansion valve (los yog capillary, supercooling tswj valve), plaub-txoj kev valve, ntau lub valve, kos valve, solenoid valve, siab hloov, fuse, tso zis siab tswj valve, siab. xws li, kua cia tank, kub exchanger, collector, lim, tshuab ziab khaub ncaws, tsis siv neeg qhib thiab kaw ntaus ntawv, nres valve, kua txhaj plug thiab lwm yam khoom.
Lub kaw lus tswj muaj ntau yam khoom siv tswj. Lawv yog:
Refrigerant controller: expansion valve, capillary, thiab lwm yam.
Refrigerant voj xws li: plaub-txoj kev valve, kos valve, ob lub valve, solenoid valve.
Refrigerant siab xws li: siab hloov, tso zis siab regulator, siab tswj.
Lub cev muaj zog tiv thaiv: overcurrent relay, thermal overcurrent relay, kub relay. Kub regulator:
Temperature position regulator, kub proportional regulator. Humidity regulator: Humidity regulator.
Defrosting maub los: defrosting kub hloov, defrosting lub sij hawm relay, ntau yam kub hloov.
Kev tswj dej txias: dej so relay, dej ntws tswj valve, twj tso kua mis, thiab lwm yam.
Tswb tswj: tshaj-kub tswb, ultra-ntub tswb, tsis tshua muaj siab tswb, hluav taws tswb, pa taws tswb, thiab lwm yam.
Lwm yam kev tswj: sab hauv kiv cua ceev maub los, sab nraum zoov kiv cua ceev maub los, thiab lwm yam.
Raws li qhia hauv 3. Cov tub yees thiab lawv cov khoom.
Muaj ntau cov tub yees, uas tau piav qhia luv luv hauv Freon 12 thiab 22.
A. Freon 12 (CF2Cl2) yog cov xim tsis muaj xim, tsis muaj ntxhiab, pob tshab, yuav luag tsis muaj tshuaj lom, tab sis ntau tshaj 80% ntawm cov ntsiab lus ntawm huab cua tuaj yeem ua rau tuag taus. Freon 12 tsis kub hnyiab, tsis tawg, thiab tuaj yeem rhuav tshem cov teeb meem hydrogen fluoride, hydrogen chloride, thiab lub teeb gases (CoCl2) thaum raug qhib nplaim taws lossis kub siab tshaj 400 degrees. Cov tub yees R12 yog qhov siv dav hauv nruab nrab kub, haum rau cov tub yees me me thiab nruab nrab, xws li cov tub yees, lub freezers, thiab lwm yam. R12 tuaj yeem yaj ntau yam organic tebchaw, yog li nws tsis tuaj yeem siv cov roj hmab universal gasket (ntiv nplhaib) , feem ntau yog chloroprene roj hmab los yog butadiene roj hmab ntawv los yog foob.
freon 22 (CHF2Cl) R22 R22 tsis hlawv lossis tawg. Nws toxicity yog me ntsis ntau dua R12, thiab solubility ntawm dej yog ntau dua R12, tab sis nws tseem tuaj yeem ua rau "ice jams" hauv cov tub yees. R22 tuaj yeem yaj ib nrab hauv cov roj lubricating, thiab nws cov solubility sib txawv nrog rau hom thiab kub ntawm lubricating roj. Yog li ntawd, lub tub yees system ntawm R22 yuav tsum muaj cov roj rov qab ntsuas.
Lub evaporation kub ntawm R22 nyob rau hauv tus qauv atmospheric siab yog 40.8 degree, qhov kub thiab txias condensation siab tsis ntau tshaj 15.68 x 105 Pa, thiab lub peev xwm txias thiab chav tsev ntim yog ntau tshaj 60% ntau tshaj R12. R22 refrigerant yog siv rau hauv cov khoom cua txias.