Priprava merilne škatle za ločeno merjenje hrupa sesalne enote

Ravnihar, Neža (author), Boltežar, Miha (mentor)

V tem delu je predstavljeno merjenje hrupa sesalne enote na strani, kjer zrak v enoto vstopa ter na strani, kjer zrak iz nje izstopa, z namenom, da se potrdi kako naj bi bila sesalna enota pozicionirana znotraj sesalnika prahu, da bi bil hrup le tega čim nižji. Meritev je bila izvedena znotraj merilne škatle, ki je bila skonstruirana tako, da je možno ločeno pomeriti prispevek hrupa elektromotorja (prevladuje elektromagnetni hrup) in prispevek hrupa turbokolesa, na katerem prevladuje aerodinamični vir hrupa. Ugotovljeno je bilo, da je raven zvočnega tlaka odvisna od lege opazovalne točke.

• Language: Slovenian
• Keywords: sesalna enota elektromotor aerodinamični hrup strukturalni hrup zvok nihanja
• Work type: Bachelor thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-94497
• Publication date in RUL: 01.09.2017

Secondary language

• Language: English
• Title: Preparation of the measuring box for seperate measuring of noise of vacuum sucking unit

Abstract

This work presents measurements of noise of vacuum sucking unit, which were made on both sides of vacuum sucking unit - at first at side, where air is entering into the unit, later at side, where air is leaving the unit. Intention of measurements is display of the most favourable position of the vacuum sucking unit inside of the vacuum cleaner unit considering wish of reducing noise of the vacuum cleaner unit. Measurements were made inside of measuring box, which was engineered in a way that the noise of electric motor and noise of centrifugal wheel can be tried for size separately. Final finding is, that level of sound pressure depends upon point of observation.

• Keywords: vacuum suction unit electrical motor aerodynamical noise structural noise sound vibrations