WO2008052362A1 - Diffuseur de ventilation de plancher assisté par un ventilateur - Google Patents

Diffuseur de ventilation de plancher assisté par un ventilateur Download PDF

Info

Publication number
WO2008052362A1
WO2008052362A1 PCT/CA2007/001988 CA2007001988W WO2008052362A1 WO 2008052362 A1 WO2008052362 A1 WO 2008052362A1 CA 2007001988 W CA2007001988 W CA 2007001988W WO 2008052362 A1 WO2008052362 A1 WO 2008052362A1
Authority
WO
WIPO (PCT)
Prior art keywords
diffuser
air
floor
floor ventilation
occupied space
Prior art date
Application number
PCT/CA2007/001988
Other languages
English (en)
Inventor
Julian Rimmer
Andrew Mccorrister
Original Assignee
E.H. Price Ltd.
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 E.H. Price Ltd. filed Critical E.H. Price Ltd.
Priority to CA002668031A priority Critical patent/CA2668031A1/fr
Publication of WO2008052362A1 publication Critical patent/WO2008052362A1/fr

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
    • 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
    • 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
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/40—HVAC with raised floors

Definitions

  • the present invention relates to a floor ventilation diffuser with an inlet fan.
  • the floor ventilation diffuser is used in an underfloor plenum air conditioning system.
  • an underfloor plenum air conditioning system warm or cool air is supplied to the plenum below the floor of an occupied space that is to be heated or cooled.
  • floor ventilation diffusers are mounted in the floor at predetermined locations to allow the warm or cool air in the plenum to flow into the occupied space above the floor.
  • the floor ventilation diffusers are located and oriented to accommodate the configuration of the occupied space to be heated or cooled.
  • Prior art floor ventilation diffusers include simple boxlike structures with side or bottom air inlet openings.
  • the side inlet openings allowed the floor ventilation diffusers to be rotated in order to control airflow through the floor ventilation diffusers based on the relative position of the diffusers air inlet opening to the flow of air in the plenum.
  • Such side air inlet diffusers usually included sliding dampers for further control of airflow by closing off a portion of the face of the diffuser grilles used with the floor ventilation diffusers.
  • floor ventilation diffusers with bottom openings often included rotary dampers to control the amount of air flowing from the underfloor plenum into the occupied space.
  • the present invention is a floor ventilation diffuser with an inlet fan.
  • the floor ventilation diffuser comprises a diffuser housing with an air inlet opening and an air outlet opening.
  • a diffuser grille covers the air outlet opening and an inlet fan is mounted at the air inlet opening. The inlet fan pulls air from the underfloor plenum into the floor ventilation diffuser housing and discharges the air through the diffuser grille into the occupied space.
  • a thermostat in each room of the occupied space above the floor controls the operation of the inlet fan for each floor ventilation diffuser in the room. Consequently, the thermostat controls the amount of air passing through the floor ventilation diffuser and into an individual room in the occupied space. That individual control improves the comfort in each individual room of the occupied space.
  • the floor ventilation diffuser of the present invention is a variable air volume device, the diffuser will increase and decrease the amount of air delivered to the occupied space depending on the input signal to the inlet fan from the thermostat. This operation makes the floor ventilation diffuser of the present invention more energy efficient than a floor diffuser that has a constant volume based on the pressure in the underfloor plenum.
  • the inlet fan is a 24 volt direct current (VDC) variable speed fan that consumes a small amount of energy during use when compared to a floor ventilation diffuser with a movable damper for the same task.
  • VDC direct current
  • the inlet fan, the housing, and the diffuser grille of the floor ventilation diffuser generate a low amount of noise.
  • An integrated noise silencer is provide to dampen fan noise.
  • the floor ventilation diffuser of the present invention is easily moved because the connections, power and control connections, are all quickly disconnected and reconnected at a new location.
  • the floor ventilation diffuser of the present invention also includes a feedback alarm signal from the inlet fan.
  • the feedback alarm signal is generated by excess current to the fan and thus warns of jams or blockages.
  • FIG. 1 is a perspective view of a floor ventilation diffuser shown mounted in the floor of an occupied space in accordance with the present invention.
  • FIG. 2 is a perspective view of the floor ventilation diffuser shown mounted in the floor of an occupied space in accordance with the present invention.
  • FIG. 3 is a perspective view of the floor ventilation diffuser in accordance with the present invention.
  • FIG. 4 is a perspective view of another embodiment of the floor ventilation diffuser in accordance with the present invention.
  • FIG. 5 is a top plan view of the floor ventilation diffuser in accordance with the present invention.
  • FIG. 6 is a section view of the floor ventilation diffuser in accordance with the present invention as seen along line C-C of Fig. 5.
  • FIG. 7 is a section view of the diffuser grille of the floor ventilation diffuser in accordance with the present invention as seen along line C-C of Fig. 5.
  • FIG. 8 is a detailed view of the diffuser grille of the floor ventilation diffuser in accordance with the present invention as seen along line C-C of Fig. 5.
  • FIG. 9 is a section view of the floor ventilation diffuser in accordance with the present invention as seen along line D-D of Fig. 5.
  • FIG. 10 is a section view of the diffuser grille of the floor ventilation diffuser in accordance with the present invention as seen along line D-D of Fig. 5.
  • FIG. 1 1 is a detailed view of the diffuser grille of the floor ventilation diffuser in accordance with the present invention as seen along line D-D of Fig. 5.
  • Fig. 1 discloses a floor ventilation diffuser 10 in accordance with the present invention mounted in a floor opening 14 of a floor 12. Conditioned air is supplied to a closed underfloor plenum 16 by means of a fan column (not shown).
  • the floor ventilation diffuser 10 includes a diffuser housing 20 with side walls 21 and a bottom wall 19.
  • the diffuser housing 20 has with an air outlet opening 22 and an air inlet opening 26 in one of side walls 21.
  • a diffuser grille 24 is mounted over the air outlet opening 22.
  • An inlet fan 28 is mounted in the air inlet opening 26.
  • the diffuser housing or plenum box 20 is constructed of galvanized steel or other suitable material to prevent oxidization after installation in the field.
  • the diffuser housing 20 has a lip 30 on all four sides to allow the floor ventilation diffuser 10 to rest within the opening 14 in the raised floor 12.
  • the inlet fan 28 is a plastic brushless direct current (DC), variable speed fan.
  • the inlet fan 28 in one embodiment is affixed to the outside of the side wall of the diffuser housing 20.
  • An integrated silencer 32 in the shape of a small acoustical channel 34 is located at the air inlet opening 26 within the diffuser housing 20.
  • Acoustical dampening material (not shown) lines the inside surfaces 36 of the diffuser housing 20.
  • An electrical enclosure 38 is provided to cover the electrical components within the diffuser housing 20.
  • the electrical enclosure 38 has a perforated top 40 to allow heat generated from the components within the electrical enclosure 38 to flow out of the diffuser housing 20.
  • the electrical enclosure 38 houses a power transformer, a circuit board, and a terminal block.
  • An electrical plug 42 is connected to a power cable 43 that passes through one of the side walls 21 of the diffuser housing 20 and into the electrical enclosure 38.
  • a socket 23 is located on the side wall 21 of the diffuser housing 20 to accept a signal cable (not shown) which conducts control signals from a thermostat or other control module to the ventilation diffuser 10.
  • the diffuser grille 24 consists of end frames 44 and side frames 52.
  • a removable grille core section 58 is constructed of thick gauge extruded grille blades 54 that are mechanically locked together with a mandrel tube 56. Grille openings 50 are formed between the grille blades 54 to allow air into the occupied space above the floor.
  • the grille core section 58 rests on end ledges 64 of the end frame 44 and on side ledges 66 of the side frames 52. Below the ledges 64, support bars 46 are welded to the end frames 44. The support bars 46 in turn support directional vanes 48 (Fig. 11). The directional vanes 48 are captured between the side frames 52.
  • the directional vanes 48 are oriented at 90 degrees from the grille blades 54 of the core section 58 of the diffuser grille 24.
  • a painted steel baffle 62 is attached to the bottom of the diffuser grille 24.
  • the lips 30 of the diffuser housing 20 rest on the edge of the floor opening 14 cut into the raised floor 12 (Fig. 3).
  • the diffuser housing 20 penetrates into the underfloor air plenum 16. Consequently, the floor ventilation diffuser 10 can be installed from the room side of the floor 12.
  • the diffuser grille floor 24 is removable from the room side of the diffuser housing 20, thereby allowing access to the diffuser housing 20 for cleaning.
  • the core section 58 of the diffuser grille 24 is removable to allow for internal cleaning of the diffuser grille 24.
  • the inlet fan 28 is attached to the side wall 21 of the diffuser housing 20 and is wired to an internal circuit board (not shown) located in the electrical enclosure 38.
  • the circuit board receives a control signal either from a computerized Building Management System (BMS) or directly from a thermostat located in the individual room of the occupied space via socket 23. If the inlet fan 28 becomes jammed or blocked, the circuit board receives an alarm signal from the inlet fan 28, sends a control signal to the inlet fan 28 to halt its operation, and relays the alarm signal back to the BMS via socket 23.
  • BMS computerized Building Management System
  • the incoming control signal from the BMS or from the individual thermostat and the output alarm signal are transmitted through a provided cable (not shown) to socket 23, which connects to the floor ventilation diffuser 10 via modular connections (such as socket 23). There are also modular connections to allow the floor ventilation diffusers 10 to be daisy chained together.
  • the power cord 43 passes into the electrical enclosures 38 and is connected to the power transformer. The transformer provides the power to the circuit board.
  • the control signal from the BMS or from the individual thermostat is then relayed to the inlet fan 28 to provide an appropriate airflow as demanded in the occupied space.
  • the inlet fan 28 pushes air through the integrated silencer 32 and into the lined diffuser housing 20.
  • the conditioned air is then directed upwards by the pressure created by the inlet fan 28 towards the air outlet opening 22.
  • the baffle 62 mounted on the back side of the diffuser grille 24 equalizes the air speed and direction as the air passes through the diffuser grille 24.
  • the air then passes through directional vanes 48, which are individually adjusted to deflect the air, as set by the user.
  • the core section 58 of the diffuser grille 24 then directs the air at an angle specified by the user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)

Abstract

L'invention concerne un diffuseur de ventilation de plancher assisté par un ventilateur, le diffuseur comprenant un boîtier de diffuseur fermé présentant une ouverture d'entrée d'air et une ouverture de sortie d'air. Une grille de diffuseur recouvre l'ouverture de sortie d'air et un ventilateur d'entrée est monté à l'ouverture d'entrée d'air. Le ventilateur d'entrée tire l'air du plenum sous le plancher dans le boîtier de diffuseur de ventilation de plancher et décharge l'air à travers la grille de diffuseur dans l'espace occupé. Un thermostat dans chaque salle de l'espace occupé au-dessus du plancher commande le fonctionnement du ventilateur d'entrée pour chaque diffuseur de ventilation de plancher dans la salle et, de cette façon, régule la quantité d'air passant à travers le diffuseur de ventilation de plancher et dans une salle individuelle dans l'espace occupé.
PCT/CA2007/001988 2006-11-03 2007-11-05 Diffuseur de ventilation de plancher assisté par un ventilateur WO2008052362A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002668031A CA2668031A1 (fr) 2006-11-03 2007-11-05 Diffuseur de ventilation de plancher assiste par un ventilateur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86422406P 2006-11-03 2006-11-03
US60/864,224 2006-11-03

Publications (1)

Publication Number Publication Date
WO2008052362A1 true WO2008052362A1 (fr) 2008-05-08

Family

ID=39343774

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2007/001988 WO2008052362A1 (fr) 2006-11-03 2007-11-05 Diffuseur de ventilation de plancher assisté par un ventilateur

Country Status (3)

Country Link
US (1) US20080108296A1 (fr)
CA (1) CA2668031A1 (fr)
WO (1) WO2008052362A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2599162A1 (fr) * 2007-08-28 2009-02-28 Super Electric Corporation Ventilateur de renfort pour event de plancher
US8984897B2 (en) * 2009-09-16 2015-03-24 International Business Machines Corporation Endothermic reaction apparatus for removing excess heat in a datacenter
GB2480470B (en) 2010-05-20 2016-03-02 4Energy Ltd Air vent
US20120129443A1 (en) * 2010-10-06 2012-05-24 Philip Bastow Airflow and Heating Control Supply Air Terminal
US20150354596A1 (en) 2014-06-10 2015-12-10 Joseph McDonnell Method and apparatus for a fan grill and a fan producing a multi-directional air current
US10251313B2 (en) * 2016-03-21 2019-04-02 Raymond & Lae Engineering, Inc. Air-grate floor panel sub-plenum retrofit add on multi-directional plume

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615383A (en) * 1949-10-03 1952-10-28 Louis J Jenn Ventilating and heating device
JP2001235207A (ja) * 2000-02-22 2001-08-31 National House Industrial Co Ltd 家屋換気装置
EP1335165A1 (fr) * 2002-02-11 2003-08-13 Heluma n.v. Element encastrable dans le sol, les mûrs ou des cabinets

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212233A (en) * 1978-01-06 1980-07-15 Shaffer Robert H Blower unit for wall heater having slotted front panel
US5632677A (en) * 1995-09-15 1997-05-27 Elkins; Larry V. Fan-equipped air delivery vent
FR2805601B1 (fr) * 2000-02-29 2002-06-07 Aldes Aeraulique Groupe de ventilation auto-pilote a regulation electronique
US6419576B1 (en) * 2001-03-22 2002-07-16 Air Handling Engineering Ltd. Sound attenuating inlet silencer for air supplying fan

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615383A (en) * 1949-10-03 1952-10-28 Louis J Jenn Ventilating and heating device
JP2001235207A (ja) * 2000-02-22 2001-08-31 National House Industrial Co Ltd 家屋換気装置
EP1335165A1 (fr) * 2002-02-11 2003-08-13 Heluma n.v. Element encastrable dans le sol, les mûrs ou des cabinets

Also Published As

Publication number Publication date
US20080108296A1 (en) 2008-05-08
CA2668031A1 (fr) 2008-05-08

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