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
  • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
  • F04D17/08—Centrifugal pumps
  • F04D17/10—Centrifugal pumps for compressing or evacuating
• • 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
  • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
  • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
  • F04D29/663—Sound attenuation
  • F04D29/664—Sound attenuation by means of sound absorbing material
• • 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
  • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
  • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
  • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
• • 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
  • F24F13/24—Means for preventing or suppressing noise
• • 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
• • 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

• Arrangement for displacement ventilation including a support body with connectable supporting planes for supporting devices such a filter module
• 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 invention provides a far-reaching modular construction of devices for displacement ventilation so that a limited number of basic modules may be used for forming a large number of differently configured air supply means that may be adapted to the prevailing conditions in a specific room, and to the desired effect which is wanted in that room.
• the device includes a circulating module for pre-filtering air that is circulated in the room.
• the device includes a fan unit for effecting the circulation.
• a fan unit for effecting the circulation.
• the circulation air is filtered before the intake to the fan unit, which is a considerable advantage.
• a circulation air filter is adapted to the conditions and expected impurities prevailing in the particular room whereas the filter-housing module per se is essentially adapted to the conditions prevailing in the supply air.
• said block is connected to the inlet sound absorber and in particular it is preferred 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 sound absorbers are made from a synthetic foam material having open cells and an essentially air-tight surface layer on their external surfaces.
• a very good sound-absorbing effect is achieved.
• air channels being inside the parts of the sound absorbers are not coated 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 filter-housing module for use in a device according to the invention
• Fig. 3 shows another filter-housing module 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. Description of embodiments
• 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 filter- housing module 3 which on its front side has a filter, over a supply air connection 4.
• the displacement ventilation device 1 besides the filter- housing module 3 also comprises a circulating module 5 which is provided with a circulation air filter.
• the circulating module 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 module 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 module 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 circulating module 5, the inlet connection to the inlet sound absorber 8, comprise interface between the block of the fan unit and the outlet sound absorber and comprise the interface between the two parts 9a, 9b of the outlet sound absorber, respectively, and simultaneously support connections for the filter-housing module 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 module 3 and the circulating module 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 module 3 and the circulating module 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 module 3 and the circulating module 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 module 3 is shown in an enlarged scale with connections 4 and 20, respectively.
• the filter- housing module 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 module 3.
• Fig. 3 shows the circulating module 5 which has only one filter portion 22 and two connections 23, which in this case function as outlets from the circulating module 5.
• the device according to the invention can be easily supplemented with a discharge air module, which in that case is preferably positioned above the circulating module 5 in Fig. 1 and is connected over its outlet or outlets, preferably corresponding to the outlets 23 in Fig. 3, to at least one central discharge air channel.
• a discharge air module which in that case is preferably positioned above the circulating module 5 in Fig. 1 and is connected over its 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, whereafter the air is pressed, as is usual in a centrifugal fan, out from the fan block through the outlet 31.
• 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 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 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 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 bifurcates so as to change 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 which provides a clear and effective pipe-damping effect.
• 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 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 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 module.
• 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)
• Filtering Materials (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20287842

Family Applications (1)

Country Status (9)

Families Citing this family (2)

Citations (8)

• 2002
  • 2002-05-13 SE SE0201436A patent/SE525746C2/sv not_active IP Right Cessation
• 2003
  • 2003-05-09 DK DK03723611T patent/DK1504225T3/da active
  • 2003-05-09 JP JP2004503857A patent/JP2005536323A/ja active Pending
  • 2003-05-09 EP EP03723611A patent/EP1504225B1/en not_active Expired - Lifetime
  • 2003-05-09 AU AU2003230534A patent/AU2003230534A1/en not_active Abandoned
  • 2003-05-09 KR KR10-2004-7017469A patent/KR20040107511A/ko not_active Application Discontinuation
  • 2003-05-09 AT AT03723611T patent/ATE334352T1/de not_active IP Right Cessation
  • 2003-05-09 DE DE60307088T patent/DE60307088T2/de not_active Expired - Lifetime
  • 2003-05-09 WO PCT/SE2003/000760 patent/WO2003095901A1/en active IP Right Grant

Patent Citations (8)

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