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
  • F24F13/28—Arrangement or mounting of filters
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
  • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
  • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
  • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F2110/00—Control inputs relating to air properties
  • F24F2110/40—Pressure, e.g. wind pressure
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F2140/00—Control inputs relating to system states
  • F24F2140/10—Pressure

Definitions

• the present invention is related to an air inlet with a channel to a ventilation plant, according to the preamble of the claims.
• a very important component in a ventilation plant is the air inlet.
• the function of the air inlet is to receive fresh outdoor air which is to be guided further to the ventilation plant.
• the air inlet is the front line defence of the ventilation plant against pollution and moisture from the outdoor air and therefore to the largest extent possible, should stop moisture, such as fog, drizzle and snow and additionally also larger pollution such as pollen, coarse dust, insects and leaves.
• the expression air inlet does not only cover the inlet as such, but also the channel leading to the next component in a ventilation plant, the main filter. This is a part of the plant which is very exposed to moisture and pollutions and therefore should be given special attention.
• Dust combined with moisture provided the best growth conditions for many microorganisms. It is naturally especially large concentrations of dust in the filter. However, also the inlet channels will have large deposits of dust, dependent of the flow conditions in the channel as well as the procedures and routines for maintenance and cleaning. Another problem is the use of silencers arranged between the air inlet and the plant, thereby to reduce the noise from the plant as such. Such means very often are very little accessible for inspection and cleaning and additionally the sound absorbent binds more dust than a smooth surface. Combined with the moisture penetrating into the above mentioned devices, there will be good conditions for undesired microorganisms.
• the air inlet with the channel to the plant according to the present invention ensures that the plant very easily can be inspected and maintained. This is achieved with the air inlet according to the invention as defined by the features stated in the claims.
• the drawing discloses in figure 1 schematically a longitudinally section through a ventilation plant comprising an inlet screen with a coarse filter in front of a chamber solution with a main filter, figure 2 discloses in a perspective view the chamber solution of the ventilation plant, between the inlet screen and the plant as such and figure 3 discloses the components of the air inlet.
• the air penetrates into the ventilation plant through an air inlet 1 and thereafter is guided into a service chamber 2 with a main filter 3.
• the air inlet 1 comprises a prefilter, preferably of the amerkleen type, to stop moisture and pollutions.
• the prefilter preferably is of the type amerkleen m80.
• the number of main filter 3 may be increased to achieve a lower pressure fall through the plant, the SFP-figure, possibly the number may be decreased as such work is made substantially easier as this is performed from and in the service chamber 2.
• the screen in the air inlet 1 with a chamber solution where the coarse filtering is performed in the air inlet 1 and the finer filtering is performed in the main filter 3, both of which being arranged in the service chamber 2, the best possible filtering is achieved.
• the main filter 3 is replaced in a quick and safe manner.
• the air inlet 1 comprises a number of filter cassettes 9, each of which being adapted to receive a perforated filter bottom 8 and a filter 5.
• a perforated a cover 6 holds the filter 5 in place against the filter bottom 8 in the filter cassettes 9, against the pressure from the air flow from below and up through the filter bottom 8, the filter 5 and the cover 6.
• heating elements 7 are installed suitably between the filter bottom 8 and the filter 5 in such a way that the heating element 7 which may be a heater cable having physical contact with and being secured to the filter bottom 8.
• the filter 5 is made of a glass material having a thickness of approximately 100 mm and as a coarse filter this will stop fog, drizzle and coarse dust.
• the filter 5 suitably is treated with an adhesive agent to capture the dust. To stop the coarse dust is important as this causes high pressure drop on the main filter and smell in the plant because the coarse dust allows mould fungus to thrive.
• Installing of pressure sensors above the screen or the filter cassette 9 allows for registration in case of the filter 5 is blocked or freezes.
• the plant will be stopped and the heating elements 7 will be activated.
• Upon a shorter period of time such as % hour, the plant is free of ice and can be started again. In this period the ice will loosen and fall down on the inclined plates 10 and slide further down.
• the inclined plates 10 also keep water away from the filter bottom 8.
• the air inlet 1 ensures that fog is prevented in entering the plant when the environment has a temperature below the freezing point and at least down to minus 25 °C.
• the plant can be placed in operation modus within a short period of time, such as up to a minute.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Jet Pumps And Other Pumps (AREA)
• Compressor (AREA)
• Characterised By The Charging Evacuation (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=29775178

Family Applications (1)

Country Status (2)

Cited By (2)

Citations (7)

• 2003
  • 2003-11-13 NO NO20035045A patent/NO324192B1/no not_active IP Right Cessation
• 2004
  • 2004-11-15 WO PCT/NO2004/000351 patent/WO2005047777A1/en active Application Filing

Patent Citations (7)

Non-Patent Citations (1)

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