WO2008053067A1 - Device for controlling flow - Google Patents

Device for controlling flow Download PDF

Info

Publication number
WO2008053067A1
WO2008053067A1 PCT/FI2007/000249 FI2007000249W WO2008053067A1 WO 2008053067 A1 WO2008053067 A1 WO 2008053067A1 FI 2007000249 W FI2007000249 W FI 2007000249W WO 2008053067 A1 WO2008053067 A1 WO 2008053067A1
Authority
WO
WIPO (PCT)
Prior art keywords
controlling flow
coating
flow according
sol
exhaust air
Prior art date
Application number
PCT/FI2007/000249
Other languages
French (fr)
Inventor
Jari Hokkanen
Olli Posti
Original Assignee
Fläkt Woods AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fläkt Woods AB filed Critical Fläkt Woods AB
Priority to US12/444,031 priority Critical patent/US20090291629A1/en
Priority to EP07823109A priority patent/EP2078176A4/en
Publication of WO2008053067A1 publication Critical patent/WO2008053067A1/en
Priority to NO20092064A priority patent/NO341941B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus

Definitions

  • This invention relates to a device for controlling flow, which device is in more detail used for controlling medium, such as air.
  • an exhaust air device such as e.g. an exhaust air valve or an exhaust register or some other exhaust air device
  • dirt accumulating on their surfaces because the surfaces have not been protected effectively enough against dirt.
  • the accumulation of dirt on the surfaces weakens the usability of the devices and necessitates cleaning the dirt, which causes extra work and costs.
  • the object of the invention is thus to provide a device for controlling air which device does not get dirty so easily as known devices used for controlling air flow. At the same time, the aim is to provide an easily cleanable device used for controlling air flow.
  • the invention is characterised by what is stated in the characterising part of claim 1.
  • sol-gel coating At least part of surfaces in the device coming into contact with flowing gaseous medium, such as air, are coated with a sol-gel coating.
  • sol-gel technique it is possible to fabricate of liquid starting materials utilising chemical reactions either a totally or partly inorganic solid network in considerably lower temperatures than conventional ceramic coating technologies.
  • it includes forming an inorganic network by means of the gelation of colloidal suspension (sol).
  • sol colloidal suspension
  • drying and hardening of the gel it is further possible to form a continuous solid network which can be e.g. a coating. Coatings produced by this technique are thin, typically from hundreds of nanometres to ten micrometres.
  • inorganic-organic (i.e. ceramic-polymer) composite materials By means of the sol-gel chemistry, it is also possible to fabricate inorganic-organic (i.e. ceramic-polymer) composite materials. With these nano-scale composite materials, it is possible to fabricate transparent thin coatings in which it is possible to combine the typical characteristics of different material groups in a molecular scale. By means of these coatings, by adjusting material characteristics, it is possible to affect, inter alia, the dirt resistance, cleanability, self- cleansing, wear resistance and other protective characteristics of the surfaces.
  • the adjustable surface characteristics are, inter alia, surface energy, topography, surface hardness and coating tightness.
  • the sol-gel coatings are often based on silane-based arrangements, but coatings can also be manufactured utilising other alkoxides of metals.
  • sol-gel technique As an advantage compared with earlier organic (e.g. fluoropolymer- based) low surface energy coatings, with coatings produced by sol-gel technique, it is possible to, inter alia, achieve better adhesion of the coating to the base material which, combined with the increase of surface hardness provided by the inorganic sections, leads to end- products with better wear- resistance.
  • An advantage of the sol-gel technique is also that the liquid coating can be applied with different wet-coating methods, which for its part enhances the technical and economic usability of these coatings. According to the inventive idea, it is possible to coat with the sol-gel coating at least following devices (or parts of apparatuses) used for controlling air:
  • a ventilation channel inlet and outlet channel
  • a ventilation pipe such as a ventilation pipe
  • an exhaust air device e.g. an exhaust air valve or an exhaust register or other exhaust air device
  • an exhaust air blower especially an extractor fan coupled to an exhaust air hood - an inlet air valve
  • the coating is formed on the inner surface of the shaft.
  • the dirt-repellent surface prevents the dirt exiting the room with air from adhering on the surface of the exhaust air device, whereby the product stays cleaner, does not look aesthetically unattractive, its technical specifications remain unchanged, and it requires less frequent cleaning.
  • the dirt-repellent coating prevents dirt or grease from adhering on the impeller and the shell of the exhaust air blower, whereby technical specifications are kept, the product operates with a good efficiency for whole of its lifetime, there are no balance problems stressing the bearings in the impeller, and it requires less frequent cleaning.
  • the dirt-repellent coating prevents the dirty air induced from the room from adhering to the surfaces.
  • the coating has been formed in the above-mentioned devices or their parts by spraying, rolling or spreading.
  • sol-gel coating used in the invention can also be a hybrid coating or a nano-composite hybrid coating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Flow Control (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

A device for controlling flow, in which device at least part of surfaces coming into contact with flowing gaseous medium, such as air, are coated with a sol-gel coating.

Description

DEVICE FOR CONTROLLING FLOW
Field of invention
This invention relates to a device for controlling flow, which device is in more detail used for controlling medium, such as air.
Background of invention
A problem of different devices utilised in controlling flow, such as air flow, as of ventilation channels, an exhaust air device (such as e.g. an exhaust air valve or an exhaust register or some other exhaust air device) is dirt accumulating on their surfaces, because the surfaces have not been protected effectively enough against dirt. The accumulation of dirt on the surfaces weakens the usability of the devices and necessitates cleaning the dirt, which causes extra work and costs.
The object of the invention is thus to provide a device for controlling air which device does not get dirty so easily as known devices used for controlling air flow. At the same time, the aim is to provide an easily cleanable device used for controlling air flow.
Description of invention
The invention is characterised by what is stated in the characterising part of claim 1.
The invention is also characterised by what is stated in enclosed claims 2-9.
According to the inventive idea, at least part of surfaces in the device coming into contact with flowing gaseous medium, such as air, are coated with a sol-gel coating. By means of the sol-gel technique, it is possible to fabricate of liquid starting materials utilising chemical reactions either a totally or partly inorganic solid network in considerably lower temperatures than conventional ceramic coating technologies. As the name of the technique reveals, it includes forming an inorganic network by means of the gelation of colloidal suspension (sol). By means of the drying and hardening of the gel, it is further possible to form a continuous solid network which can be e.g. a coating. Coatings produced by this technique are thin, typically from hundreds of nanometres to ten micrometres.
By means of the sol-gel chemistry, it is also possible to fabricate inorganic-organic (i.e. ceramic-polymer) composite materials. With these nano-scale composite materials, it is possible to fabricate transparent thin coatings in which it is possible to combine the typical characteristics of different material groups in a molecular scale. By means of these coatings, by adjusting material characteristics, it is possible to affect, inter alia, the dirt resistance, cleanability, self- cleansing, wear resistance and other protective characteristics of the surfaces. The adjustable surface characteristics are, inter alia, surface energy, topography, surface hardness and coating tightness. The sol-gel coatings are often based on silane-based arrangements, but coatings can also be manufactured utilising other alkoxides of metals.
As an advantage compared with earlier organic (e.g. fluoropolymer- based) low surface energy coatings, with coatings produced by sol-gel technique, it is possible to, inter alia, achieve better adhesion of the coating to the base material which, combined with the increase of surface hardness provided by the inorganic sections, leads to end- products with better wear- resistance. An advantage of the sol-gel technique is also that the liquid coating can be applied with different wet-coating methods, which for its part enhances the technical and economic usability of these coatings. According to the inventive idea, it is possible to coat with the sol-gel coating at least following devices (or parts of apparatuses) used for controlling air:
- a ventilation channel (inlet and outlet channel), such as a ventilation pipe
- an exhaust air device (e.g. an exhaust air valve or an exhaust register or other exhaust air device)
- an exhaust air blower, especially an extractor fan coupled to an exhaust air hood - an inlet air valve
In the ventilation channel, the coating is formed on the inner surface of the shaft.
In the exhaust air device, the dirt-repellent surface prevents the dirt exiting the room with air from adhering on the surface of the exhaust air device, whereby the product stays cleaner, does not look aesthetically unattractive, its technical specifications remain unchanged, and it requires less frequent cleaning. In the exhaust air blower, the dirt-repellent coating prevents dirt or grease from adhering on the impeller and the shell of the exhaust air blower, whereby technical specifications are kept, the product operates with a good efficiency for whole of its lifetime, there are no balance problems stressing the bearings in the impeller, and it requires less frequent cleaning.
In the inlet air valve, the dirt-repellent coating prevents the dirty air induced from the room from adhering to the surfaces.
The coating has been formed in the above-mentioned devices or their parts by spraying, rolling or spreading.
It is obvious to those skilled in the art that the invention is not limited to the embodiments described above, but it may be varied within the scope of the enclosed claims. The sol-gel coating used in the invention can also be a hybrid coating or a nano-composite hybrid coating.

Claims

1. A device for controlling flow, in which device at least part of surfaces coming into contact with flowing gaseous medium, such as air, are coated, characterised in that the coating is a sol-gel coating.
2. A device for controlling flow according to claim 1, characterised in that the device is at least one ventilation pipe.
3. A device for controlling flow according to claim 1, characterised in that the device is an exhaust air valve.
4. A device for controlling flow according to claim 1, characterised in that the device is an inlet air valve.
5. A device for controlling flow according to claim 1, characterised in that the device is an exhaust register.
6. A device for controlling flow according to claim 1, characterised in that the device is an exhaust air blower.
7. A device for controlling flow according to any one of claims 1-6, characterised in that the device is of steel, most advantageously of zinc-coated steel.
8. A device for controlling flow according to claim 1, characterised in that the coating is a hybrid coating.
9. A device for controlling flow according to claim 1, characterised in that the coating is a nano-composite hybrid coating.
PCT/FI2007/000249 2006-11-03 2007-10-16 Device for controlling flow WO2008053067A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/444,031 US20090291629A1 (en) 2006-11-03 2007-10-16 Device for controlling flow
EP07823109A EP2078176A4 (en) 2006-11-03 2007-10-16 Device for controlling flow
NO20092064A NO341941B1 (en) 2006-11-03 2009-05-27 Device for controlling flow

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20060966A FI123183B (en) 2006-11-03 2006-11-03 Device for controlling a current
FI20060966 2006-11-03

Publications (1)

Publication Number Publication Date
WO2008053067A1 true WO2008053067A1 (en) 2008-05-08

Family

ID=37482425

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2007/000249 WO2008053067A1 (en) 2006-11-03 2007-10-16 Device for controlling flow

Country Status (5)

Country Link
US (1) US20090291629A1 (en)
EP (1) EP2078176A4 (en)
FI (1) FI123183B (en)
NO (1) NO341941B1 (en)
WO (1) WO2008053067A1 (en)

Citations (8)

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JPH1076597A (en) * 1996-09-04 1998-03-24 Hitachi Ltd Highly functionable photo-catalyst film
JP2001192070A (en) * 2000-01-07 2001-07-17 Haruhiko Watanabe Package having gas-barrier layer
US20030111455A1 (en) * 2001-02-17 2003-06-19 Krings Leo Hubert Maria Dometic appliance and method of manufacturing thereof
US20030138661A1 (en) * 2003-02-19 2003-07-24 Ferro Corporation Sol-gel composition and method of making same
WO2004076570A1 (en) * 2003-02-28 2004-09-10 Koninklijke Philips Electronics N.V. Fluoropolymer-containing sol-gel coating
KR20050041034A (en) * 2003-10-29 2005-05-04 한국화학연구원 The methods for preparing an aqueous organic/inorganic nanohybrid sol-gel coating agents
US20050173998A1 (en) * 2001-11-23 2005-08-11 Hans Klingenburg Sorption rotor
US20050260421A1 (en) * 2002-07-30 2005-11-24 Ytsen Wielstra Utensil and use of a sol gel coating on such a utensil

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US3358577A (en) * 1965-08-16 1967-12-19 Krueger Mfg Company Air diffusing register
US3568722A (en) * 1968-09-17 1971-03-09 Ppg Industries Inc Longitudinally reinforced flexible duct
US3589265A (en) * 1969-06-23 1971-06-29 Allied Thermal Corp Floor register
US5749190A (en) * 1994-12-19 1998-05-12 Williams; Steven Ray HVAC register box
US6159421A (en) * 1995-10-17 2000-12-12 Ebara Corporation Method of cleaning gases
US5807171A (en) * 1996-06-17 1998-09-15 E.H. Price Limited Air diffuser apparatus
US6005028A (en) * 1996-08-12 1999-12-21 Southwest Research Institute Organic-inorganic hybrid composites for dental restorative material
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US6783680B2 (en) * 2000-10-23 2004-08-31 University Of South Florida Sample preconcentration tubes with sol-gel surface coatings and/or sol-gel monolithic beds
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Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1076597A (en) * 1996-09-04 1998-03-24 Hitachi Ltd Highly functionable photo-catalyst film
JP2001192070A (en) * 2000-01-07 2001-07-17 Haruhiko Watanabe Package having gas-barrier layer
US20030111455A1 (en) * 2001-02-17 2003-06-19 Krings Leo Hubert Maria Dometic appliance and method of manufacturing thereof
US20050173998A1 (en) * 2001-11-23 2005-08-11 Hans Klingenburg Sorption rotor
US20050260421A1 (en) * 2002-07-30 2005-11-24 Ytsen Wielstra Utensil and use of a sol gel coating on such a utensil
US20030138661A1 (en) * 2003-02-19 2003-07-24 Ferro Corporation Sol-gel composition and method of making same
WO2004076570A1 (en) * 2003-02-28 2004-09-10 Koninklijke Philips Electronics N.V. Fluoropolymer-containing sol-gel coating
KR20050041034A (en) * 2003-10-29 2005-05-04 한국화학연구원 The methods for preparing an aqueous organic/inorganic nanohybrid sol-gel coating agents

Non-Patent Citations (1)

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Title
See also references of EP2078176A4 *

Also Published As

Publication number Publication date
FI20060966A (en) 2008-05-04
US20090291629A1 (en) 2009-11-26
NO20092064L (en) 2009-05-27
EP2078176A1 (en) 2009-07-15
FI123183B (en) 2012-12-14
EP2078176A4 (en) 2012-11-07
NO341941B1 (en) 2018-02-26
FI20060966A0 (en) 2006-11-03

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