Vim li cas cov zaus ntawm ultrasonic pwm txo nrog nce kub
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Vim li cas cov zaus ntawm ultrasonic pwm txo nrog nce kub
Qee tus neeg ntsib teeb meem thaum siv cov khoom siv ultrasound: thaum lub sij hawm ntev ntawm kev siv ultrasound, qhov kub thiab txias yuav nce ntxiv thiab zaus yuav txo. Ntawm qhov kub thiab txias, qhov ntau zaus yuav dhau qhov kev siv ntau, ua rau muaj kev puas tsuaj rau pwm thiab tawg. Hauv qab no, peb yuav txheeb xyuas cov laj thawj rau qhov tshwm sim no los ntawm cov khoom ntawm ultrasonic pwm.
Los ntawm cov khoom ntawm ultrasonic pwm, nws tuaj yeem paub tias ultrasonic pwm txawv ntawm kev txhaj tshuaj pwm lossis lwm cov pwm hlau. Lub luag haujlwm tseem ceeb ntawm kev txhaj tshuaj pwm ntawm cov khoom siv roj hmab yog ua raws li cov duab, kom cov yas tuaj yeem tsim. Ultrasonic pwm yog cov khoom siv acoustic, thiab lawv lub luag haujlwm tseem ceeb yog hloov lub zog. Cov hauv qab no yog qhov kev txiav txim ntawm ultrasonic zog hloov:
Vim li cas qhov zaus ntawm ultrasonic pwm txo nrog qhov kub thiab txias (Daim duab 1)
1. Hloov 220V 50HZ mains fais fab mus rau lub tshuab hluav taws xob ultrasonic.
2. Lub tshuab hluav taws xob ultrasonic converts 220V 50Hz mains fais fab rau hauv hluav taws xob lub zog ntawm zaus ntawm 15KHZ, 20KHZ, thiab 35KHZ.
3. Lub zog hluav taws xob ntau zaus kis tau los ntawm cov kab hluav taws xob high-voltage mus rau cov transducers, uas hloov nws mus rau hauv lub zog ntawm tib zaus.
4. Lub zog siv hluav taws xob raug xa mus los ntawm amplitude modulator thiab pwm sab saud, thaum kawg mus txog qhov fusion nto ntawm cov nplaum.
Los ntawm qhov sib lawv liag ntawm ultrasonic zog hloov, nws tuaj yeem pom tias cov pwm sab saud tau txais lub zog ntawm lub zog, uas yog kev co. Qhov zaus ntawm kev vibration yog cuam tshuam los ntawm cov khoom siv, vuam lub taub hau qhov siab, thiab cov duab. Feem ntau ntawm cov cua sov tsim yog vim muaj kev vibration siab ntawm lub vuam taub hau thiab kev sib txhuam ntawm huab cua.
Ib qho ntawm cov laj thawj rau kev txo qis zaus tshwm sim los ntawm cov cua sov ntawm lub taub hau vuam yog vim thermal expansion thiab contraction. Thermal expansion thiab contraction ua rau lub molecular spacing ntawm lub vuam lub taub hau nce, uas ua rau ib tug ntev kev ncua deb yuav tsum tau rau kev co thiab ib tug txo nyob rau hauv zaus.
Thaum pib, thermal expansion thiab contraction tshwm sim thaum qhov kub ntawm lub vuam taub hau nce ceev, thiab qhov zaus ntawm lub vuam taub hau kuj txo qis. Txawm li cas los xij, nyob rau hauv cov xwm txheej, qhov zaus ntawm vuam lub taub hau maj mam txo qis vim tias qhov kub thiab txias kuj cuam tshuam qhov zaus ntawm molecular zog. Qhov kub siab dua, qhov ceev ntawm molecular zog zaus yuav. Ob leeg tshem tawm ib leeg, zoo heev txo lub neej ntawm lub vuam taub hau nws tus kheej molecules, ua rau cov kab nrib pleb yooj yim tshwm sim nyob rau hauv qhov chaw tsis yooj yim ntawm lub vuam taub hau nyob rau hauv high-temperature daim ntawv thov, thiab yog li raug muab pov tseg.
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