Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Utveckling av luftrenare
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2009 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Development of an air purifier (English)
Abstract [sv]

Under hösten 2008 gjordes ett examensarbete om utvecklingen av luftrenare på ett företag vid

namn AD Air Design AB (AD) beläget i Åkersberga utanför Stockholm. Examensarbetet

delades i två delar där den första delen behandlade dokumentation av en existerande modell.

Bakgrunden för det var en licensförsäljning från AD till Humanscale i USA för nyttjandet av

DEP (Disposable Electrostatical Precipitators) luftreningsteknik, men Humanscale

misslyckades i sin produktutveckling med tekniken. AD tog därför fram en fungerande modell

åt dem men ritningsunderlag saknades. Syftet med att ta fram ritningsunderlaget var för

projektgruppen att fördjupa kunskapen om hur luftreningen fungerade för AD:s maskiner

inför examensarbetets del 2.

AD:s företagsidé är utveckling av luftrenare med en speciell elektrofilterteknik kallad DEP.

Tekniken bygger på det revolutionerade sättet att tillverka en filterkassett av papper till ett

elektrofilter där partiklar fångas i filtret när de laddas med hjälp av en coronaström från en

borste. Den existerande modellen innehöll denna teknik och dess delar måttades upp. Vissa

delar av luftrenaren var inte färdigställda vilket gjorde att ändringar samt utveckling av vissa

detaljer gjordes löpande under skapandet av 3D-modellen. 3D-modellen och dess ritningar

skapades i Solid Edge.

Del 2 av examensarbetet omfattade utvecklingen av en luftrenare med DEP-teknik som skulle

skapa en så kallad Clean Air Zone. Del 2 inleddes med en omfattande informationssökning

om dels luftföroreningar, partiklar och hur människan påverkas men även om olika

luftreningstekniker som finns på marknaden.

Produktutvecklingen skedde med hjälp av metoden VDI 2221, en iterativ

produktutvecklingsprocess. Idéer genererades i ytmodelleringsprogrammet Rhinoceros utefter

en framtagen kravspecifikation. Idéerna utvärderades utifrån vad AD kunde tillverka och en

prototyp byggdes efter den valda idéen. Tester med avseende på luftflöde och luftreningsgrad

utfördes på prototypen där man förändrade den inre strukturen av luftrenaren och den inre

konfiguration som fick bäst resultat blev vidareutvecklad till en 3D-modell i Solid Edge.

Materialval och tillverkningsmetoder valdes utefter att luftrenaren skulle tillverkas av AD.

Dessa involverade bland annat fräsning av MDF och ABS-plast. Flera delar skulle behöva

specialbeställas från tillverkare och standardkomponenter kunde beställas av

underleverantörer.

Resultatet av examensarbetet var en testbar prototyp, fullständiga 3D-modeller med

tillhörande ritningar samt denna rapport och dess innehåll.

Abstract [en]

During the fall of 2008, a Master Thesis was carried out at a company called AD Air Design

AB (AD) situated in Åkersberga outside Stockholm, Sweden. The Master Thesis was divided

into two parts.The background for the first part of the Master Thesis was the sale of a license

to the American company Humanscale for producing products with the patented DEP-

(Disposable Electrostatical Precipitators)

technology created by AD. Humanscale wasn’t

successful in their product development with the technology and AD took over the task of

developing a satisfying model, but this was done without proper drawings. The project

groups’ purpose of making the drawings was to learn about the DEP

-technology before the

second part of the Master Thesis.

AD

’s business idea was development of air purifiers with an electric filter technology called

DEP. It’s the revolutionary way of making a filter cartridge out of paper instead of metal

plates. The particles are caught in the filter when they are electrically charged by the corona

current distributed by a small brush. The existing model contained this type of technology and

its components were measured to be made into a 3D-

model. A few of the components weren’t

finished, which resulted in changes and development of these parts during the 3D-modelling

process in Solid Edge.

Part two of the Master Thesis consisted of the development of an air purifier with DEPtechnology

that was supposed to create a so called Clean Air Zone (CAZ). It started with an

extensive information search about air contamination, particles and how man is affected by

these aspects, but also about the different air purifying techniques that existed on the market.

An iterative product development process, called VDI 2221, was used in the product

realization. After making a list of specifications requirements, ideas were sketched in

Rhinoceros. One of the ideas was chosen with reference of what the company would be able

to make into a prototype Tests on airflow and degree of purified air were carried out on the

prototype were the inner configuration was changed. The best configuration was developed

further as a 3D-model in Solid Edge.

The materials chosen for the air purifier, as well as how to manufacture the different parts,

were deliberately specified with reference to AD. The larger components such as the arm and

so forth can be produced by AD themselves; they make the parts in MDF wood and ABS

plastic which will be milled out of the specified material. The other parts will be purchased

from a subcontractor.

The result of the Master Thesis was testable prototype two complete 3D-models with

complementary drawings as well as this report and its content.

Place, publisher, year, edition, pages
2009.
Series
MMK 2009:08 IDE 021
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-99483OAI: oai:DiVA.org:kth-99483DiVA: diva2:542314
External cooperation
AD Air Design AB,Andrzej Loreth
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-07-31 Created: 2012-07-31 Last updated: 2012-07-31Bibliographically approved

Open Access in DiVA

Pedersen,Olsson(6104 kB)426 downloads
File information
File name FULLTEXT01.pdfFile size 6104 kBChecksum SHA-512
0e1c45c6c2cbce7581b07968b21e58b2313f4a55a27a1f1e483e7e59d954475c8c8abec85adcf5d719bcf6a1e8f175bb29cbd4c07937227c1c890039a39f8cec
Type fulltextMimetype application/pdf

By organisation
Machine Design (Dept.)
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 426 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 181 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf