Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
  • F24F1/0007—Indoor units, e.g. fan coil units
  • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F7/00—Ventilation
  • F24F7/003—Ventilation in combination with air cleaning
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D29/00—Details, component parts, or accessories
  • F04D29/26—Rotors specially for elastic fluids
  • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
  • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
• • 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
  • F24F7/00—Ventilation
  • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
  • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
• • 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
  • 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
  • F24F2221/00—Details or features not otherwise provided for
  • F24F2221/36—Modules, e.g. for an easy mounting or transport

Definitions

• Device for displacement ventilation including filters, sound absorbers and a fan unit supported in a block of sound absorbing material.
• the invention relates to a displacement ventilation device according to the preamble of claim 1.
• the principle of displacement ventilation is that air is introduced into a room through one or more low positioned air-supply means.
• the speed of the supply air through the supply surface of the air-supply means is set low resulting in a low degree of turbulence .
• the supply air from the supply means is also somewhat sub-tempered, i.e. has somewhat lower temperature than the temperature of the air in the room, resulting in that the supply air, after having left the air supply means, floats out over the floor and fills the room with clean supply air from below. Used, somewhat warmer air containing i. a. particles and possibly unwanted composition of gases, will thereby be pressed up above the clean air and is typically discharged from the room through highly positioned discharge air means.
• a house comprising the means includes a conical air distributor and a permeable wall, through which the supply air is flowing with low speed into the room intended to be ventilated.
• the circulation air is filtered through a circulation air filter before the inlet to the fan unit .
• a circulation air filter is adapted to the conditions and expected impurities prevailing in the particular room whereas the filter-housing per se is essentially adapted to the conditions prevailing in the supply air.
• said block for supporting the fan unit is connected to the inlet sound absorber and in particular that said block is an integral part of the inlet sound absorber since this enhances provisions for sound-absorbing and reduces risk of leaking noise.
• the centrifugal fan has two axially opposite directed inlets, there is a possibility of achieving low air velocity in separate channels inside the inlet sound absorber as well as a possibility of advantageous extension of the sound absorber in a lateral direction at the same time as the device is compact in directions perpendicular to this direction.
• the outlet sound absorber includes one portion for redirection of the flow essentially 180°.
• the filter-housing may be positioned in front of the outlet sound absorber and being supplied with circulating air from its one end whereas supply air is supplied through the other end of the filter-housing.
• the sound absorbers from a synthetic foam material having open cells and an essentially air-tight surface layer on their external surfaces.
• air channels being inside the parts of the sound absorbers are not lined with any air-tight layer, but that the open cells of the foam material are open towards these channels.
• the device having a modular body consisting of a rear portion (such as a rear plate) , and at right angle thereto supporting planes fastenable thereto, simple production and assembling of air supply means according to the invention is achieved.
• the supporting planes may be comprised of plates having through-going short tubular portions adjoining to sound-absorbing parts positioned at either side of the supporting planes for fixing the sound- absorbing parts and simplifying drawing of channels in connection with and through said supporting planes.
• Fig. 1 shows, in a disassembled view, a device for displacement ventilation according to the invention
• Fig. 2 shows a modular filter-housing for use in a device according to the invention
• Fig. 3 shows another modular filter-housing for use in a device according to the invention
• Fig. 4 shows in detail an inlet sound absorber for the device in Fig. 1,
• Fig..5 shows a first portion of an outlet sound absorber of the device in Fig. 1,
• Fig. 6 shows a second portion of the outlet sound absorber for use in a device according to Fig. 1, and
• Fig. 7 shows diagrammatically the construction of a supporting body of a device according to the invention.
• the displacement ventilation device 1 in Fig. 1 is connected to a ' support air conduit 2 belonging to a central support air system.
• the support air conduit 2 is connected to a modular filter-housing 3 which on its front side has a filter, over a supply air connection 4.
• the displacement ventilation device 1 besides the filter- housing 3 also comprises a circulation housing 5 which is provided with a circulation air filter.
• the circulation housing 5 is over two circulating conduits 7 connected to a block for carrying a fan unit 6, over an inlet sound absorber 8 which is intended to absorb inlet noise emanating from the operation of the fan unit 6.
• the outlet from the fan unit 6 goes through a channel which is drawn through an outlet sound absorber 9a, 9b, consisting of a first portion including a first connection portion 10 for connection to the fan unit and a second connection portion 11 for connection to the filter-housing 3.
• Circulation air from the fan unit 6 is thus lead through the channel in the first portion 9a of the outlet sound absorber, further through the second portion 9b of the outlet sound absorber, where the flow is redirected essentially 180° so as to connect to the filter-housing 3 at an end opposite the end for the supply air connection 4.
• the device 1 comprises a body consisting of a rear portion 12, essentially consisting of a plate bent to 90° for adapting to a corner of a room.
• a number of supporting planes 13, 14, 15 and 16 are fastenable through snap action or in a corresponding manner such that they are positioned essentially at a right angle against the two main parts of the rear portion 12.
• the supporting planes 13-16 support the circulation housing 5, the inlet connection to the inlet sound absorber 8 comprises interface between the block of the fan unit and the outlet sound absorber and comprises the interface between the two parts 9a, 9b of the outlet sound absorber, respectively, and simultaneously support connections for the filter-housing 3.
• the bottom supporting plane 16 may be arranged to support control equipment included in the device .
• a cover 17 comprised of a perforated plate having provision for passage of air is arranged to cover the filter-housing 3 and the circulation housing 5.
• a rounded, recessed cap 18 At a bottom end of the device 1, there is arranged a rounded, recessed cap 18.
• the fan unit block is covered with a lid 19 provided with an inner sound isolation (not shown) .
• the design of the displacement ventilation device 1 is very compact with the described construction and allows the inclusion of several functions at a limited area while maintaining great flexibility and highly modularised construction.
• the filter-housing 3 and the circulation housing 5 are simply replaceable when they have fulfilled their function, by removing the cover 17, covering the supply air conduit 2, removing the filter-housing 3 and the circulation housing 5 after sealing inlet and outlet, respectively, and sealing the filter front with the aid of a covering sheet or the like and subsequently positioning of new modules.
• Fig. 2 the filter-housing 3 is shown in an enlarged scale with connections 4 and 20, respectively.
• the filter-housing 3 is designed as a closed bladder and is preferably produced from a plastic material such as polycarbonate in two halves, which are sealingly connected to each other over an encircling flange. 21 indicates three filter portions with effective filters being sealingly inserted inside the filter-housing 3.
• Fig. 3 shows the circulation housing 5 which has only one filter portion 22 and two connections 23, which in this case function as outlets from the circulation housing 5.
• a discharge air module which in that case is preferably positioned above the circulation housing 5 in Fig. 1 and is connected over its 5 outlet or outlets, preferably corresponding to the outlets 23 in Fig. 3, to at least one central discharge air channel.
• the inlet sound absorber 8 is shown, which in this case is integral with a block for supporting the fan unit 6.
• This block comprises the lower portion of the sound absorber in Fig. 4 and includes a seat 30 for the fan unit 6.
• the fan unit 6 includes a centrifugal fan with, as seen in the figure, downwardly directed outlet. Air is drawn through air channels 24 into the inside of the seat 30 of the fan unit 6,
• the fan unit 6 is in the figure shown in a position where, for clarity reasons, it is removed from its seat 30.
• the fan unit 0 6 includes a motor (not shown) , a centrifugal fan which is open in two axial directions for intake from both the axial directions of the fan and a downwardly directed outlet. Fastening of the fan unit inside the seat 30 is easiest through pressing-in of the unit, which in the inserted 5 position is held through the friction from the elastically adjoining portions of the seat.
• Fig. 5 the first part 9a of the outlet sound absorber is shown in an enlarged scale.
• the air channel 25 starts with a 0 portion 25 which has a square section, so as to essentially correspond in its shape to the outlet 31 (Fig. 4) and in the inside of the portion 9a change into a circular section.
• the second part 9b of the outlet sound absorber is shown in Fig. 6, wherein the inlet hole 26 for this portion is shown, which comprises an extension of the channel 25 of the portion 9a in Fig. 5.
• the channel 26 5 bifurcates into two channels 27 and 28 in the second connection portion 11 of the outlet sound absorber. The flow is thus in operation redirected so that a redirection of essentially 180° of the flow is obtained.
• all parts comprising sound absorbers in the device according to the invention are comprised of complete parts in a synthetic foam material having open cells. On the outside the whole elements of the sound absorbers are surface-covered so as to form an air-tight external layer
• Suitable materials, for use in the sound-absorbing portions is polyurethane- foam, and the surface-covering could be a suitable synthetic lacquer, such as a polymeric surface-layer. It is however not excluded that the sound absorbers are 0 comprised of more parts or fewer parts. In principle one single integral element could be used, which thus would include sound absorbers for inlet and outlet as well as the seat of the fan unit .
• Fig. 7 the support body of the device is shown in more detail having the rear portion 12 being comprised essentially of a plate which is bent into a 90° angle and four supporting planes.
• the supporting planes are provided with a number of holes 29 corresponding to the present use, whereby the hole or 0 holes in each supporting plane corresponds to the use in question.
• a pipe part is inserted into each hole (not shown here) for connection to an adjoining sound-absorbing portion or filter housing.
• connection of the supporting planes to the rear portion 22 is accomplished in a suitable manner such as through a cut-out tongue into a downwardly bent edge-portion 32 on the supporting plane 13 which rests in a pocket-like protrusion 31 having an opening 33 in the rear portion 12.
• the rear portion is preferably constructed as a plane plate possibly having bent out portions for support of supporting planes, which at occasions, if necessary, may also be supported by cantilever-like elements.
• the fan may be made differently, for example having its inlet from only one direction.
• Other basic types of fans may also be used such as for example axial fans .

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Cooling Or The Like Of Electrical Apparatus (AREA)
• Compressor (AREA)
• Ventilation (AREA)
• Soundproofing, Sound Blocking, And Sound Damping (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20287843

Family Applications (1)

Country Status (10)

Cited By (1)

Citations (8)

• 2002
  • 2002-05-13 SE SE0201437A patent/SE525747C2/sv not_active IP Right Cessation
• 2003
  • 2003-05-09 WO PCT/SE2003/000761 patent/WO2003095902A1/en not_active Ceased
  • 2003-05-09 AT AT03723612T patent/ATE338922T1/de not_active IP Right Cessation
  • 2003-05-09 KR KR10-2004-7017472A patent/KR20040107512A/ko not_active Withdrawn
  • 2003-05-09 JP JP2004503858A patent/JP2005525527A/ja active Pending
  • 2003-05-09 DE DE60308174T patent/DE60308174T2/de not_active Expired - Lifetime
  • 2003-05-09 EP EP03723612A patent/EP1504226B1/de not_active Expired - Lifetime
  • 2003-05-09 CN CNA038107430A patent/CN1653301A/zh active Pending
  • 2003-05-09 AU AU2003230535A patent/AU2003230535A1/en not_active Abandoned
  • 2003-05-09 DK DK03723612T patent/DK1504226T3/da active

Patent Citations (8)

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