Mbiri ya botolo la thermos

Mbiri ya vacuum flasks imatha kuyambika chakumapeto kwa zaka za zana la 19.Mu 1892, katswiri wa sayansi ya zakuthambo wa ku Scotland, Sir James Dewar, anapanga botolo loyamba la vacuum.Cholinga chake choyambirira chinali ngati chidebe chosungira ndi kunyamula mpweya wamadzimadzi monga mpweya wamadzimadzi.Thermos imakhala ndi makoma awiri agalasi olekanitsidwa ndi danga la vacuum.Vacuum iyi imakhala ngati insulator, kuteteza kutentha pakati pa zomwe zili mu botolo ndi malo ozungulira.Kupangidwa kwa Dewar kunatsimikizira kukhala kothandiza kwambiri kusunga kutentha kwa zakumwa zosungidwa.Mu 1904, kampani ya Thermos idakhazikitsidwa ku United States, ndipo mtundu wa "Thermos" udakhala wofanana ndi mabotolo a thermos.Woyambitsa kampaniyo, William Walker, adazindikira kuthekera kwa zomwe Dewar adapanga ndipo adazisintha kuti zigwiritsidwe ntchito tsiku ndi tsiku.Anawonjezera zomangira zamkati zokhala ndi siliva ku magalasi awiri agalasi, kupititsa patsogolo kutchinjiriza.Ndi kutchuka kwa mabotolo a thermos, anthu apita patsogolo pakupititsa patsogolo ntchito zawo.M'zaka za m'ma 1960, galasi idasinthidwa ndi zinthu zolimba kwambiri monga zitsulo zosapanga dzimbiri ndi pulasitiki, zomwe zimapangitsa kuti mabotolo a thermos akhale olimba komanso oyenera kuchita zinthu zakunja.Kuphatikiza apo, zinthu monga zisoti zomangira, zothira ma spout ndi zogwirira zayambitsidwa kuti zitheke komanso kuzigwiritsa ntchito.Kwa zaka zambiri, ma thermoses akhala chida chogwiritsidwa ntchito kwambiri kuti zakumwa zizikhala zotentha kapena zozizira.Ukadaulo wake wotchinjiriza wagwiritsidwa ntchito pazinthu zina zosiyanasiyana, monga makapu oyenda ndi zotengera zakudya.Masiku ano, mabotolo a thermos amabwera mumitundu yosiyanasiyana, makulidwe ndi zida kuti zigwirizane ndi zosowa ndi zokonda zosiyanasiyana.