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WO2011069201A1 - Système et procédé de production d'air - Google Patents

Système et procédé de production d'air Download PDF

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Publication number
WO2011069201A1
WO2011069201A1 PCT/AU2010/001660 AU2010001660W WO2011069201A1 WO 2011069201 A1 WO2011069201 A1 WO 2011069201A1 AU 2010001660 W AU2010001660 W AU 2010001660W WO 2011069201 A1 WO2011069201 A1 WO 2011069201A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
air stream
accordance
stream
discharged
Prior art date
Application number
PCT/AU2010/001660
Other languages
English (en)
Inventor
Sean Michael Johl Badenhorst
Original Assignee
Fusion Group Holdings Pty 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
Priority claimed from AU2009905988A external-priority patent/AU2009905988A0/en
Application filed by Fusion Group Holdings Pty Ltd filed Critical Fusion Group Holdings Pty Ltd
Priority to NZ60109010A priority Critical patent/NZ601090A/en
Priority to AU2010330689A priority patent/AU2010330689B2/en
Priority to CN201080063395.XA priority patent/CN102753901B/zh
Priority to EP10835301.2A priority patent/EP2510289A4/fr
Priority to US13/514,974 priority patent/US9885494B2/en
Publication of WO2011069201A1 publication Critical patent/WO2011069201A1/fr
Priority to AU2016203447A priority patent/AU2016203447B2/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
    • F24F13/26—Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87571—Multiple inlet with single outlet
    • Y10T137/87587—Combining by aspiration
    • Y10T137/87619—With selectively operated flow control means in inlet
    • Y10T137/87627—Flow control means is located in aspirated fluid inlet

Definitions

  • the present invention relates to a system and method for delivering air.
  • Embodiments of the invention find particular, but not exclusive, use in generating an air stream in long throw sidewall air diffusion applications. Background
  • HVAC heating conditioning
  • a method for delivering air comprising the steps of:
  • the first air stream is discharged in close proximity to the second air stream.
  • the second air stream is a jet discharged at a higher velocity relative to the discharge of the first air stream.
  • the second air stream is a jet discharged at a higher momentum relative to the discharge of the first air stream.
  • the direction of the second air stream is controllable.
  • the second air stream is arranged to control the direction of the
  • the second air stream is arranged to control the throw of the combined air stream.
  • the throw and discharge direction of the combined air stream is
  • the second air stream is discharged at a substantially constant mass flow rate .
  • the second air stream is discharged at a substantially constant throw.
  • the combined air stream is discharged at a substantially constant throw.
  • the throw of the second air stream if discharged in the absence of the first air stream, is higher than the throw of the first air stream, if discharged in ' the absence of the second air stream.
  • the throw of one air stream in the absence of the other air stream is largely calculated by the steps of:
  • the second air stream is discharged by at least one outlet, grille, nozzle or jet.
  • the first air stream is discharged by at least one perforated plate .
  • the first air stream is discharged by at least one swirl diffuser.
  • the combined air stream is discharged substantially horizontally.
  • the discharge of the first air stream is controlled by at least one damper.
  • the first air stream is supplied by at least one variable speed drive fan.
  • the supply air pressure of the supply air plenum from which the first air stream is discharged is substantially equal to the supply air pressure of the supply air plenum or duct from which the second air. stream is discharged.
  • the supply air pressure in the supply air plenum from which either air stream is discharged is largely constant .
  • a system for delivering air comprising:
  • a first discharging arrangement arranged to discharge a first air stream, wherein the mass flow rate of the first air stream can be varied
  • the first air stream is a jet discharged in close proximity to the second air stream.
  • the second air stream is discharged at a higher velocity relative to the discharge of the first air stream.
  • the second air stream is a jet discharged at higher momentum relative to the discharge of the first air stream.
  • the direction of the second air stream is controllable. In an embodiment of .the second aspect, the second air stream is arranged to control the direction of the
  • the second air stream is arranged to control the throw of the combined air stream.
  • the throw and discharge direction of the combined air streams is
  • the second air stream is discharged at a substantially constant mass flow rate .
  • the second air stream is discharged at a substantially constant throw.
  • the combined air stream is discharged at a substantially constant throw.
  • the throw of the second air stream, if discharged in the absence of the first air stream, is higher than the throw of the first air stream, if discharged in the absence of the second air stream.
  • the throw of one air stream in the absence of the other air stream is calculated by the steps of :
  • the second discharging arrangement is at least one outlet, grille, nozzle or jet.
  • the first discharge arrangement is at least one perforated plate.
  • the first discharge arrangement is at least one swirl diffuser.
  • the combined air stream is discharged substantially horizontally.
  • the discharge of the first air stream is controlled by at least one damper.
  • the first air stream is supplied by at least one variable speed drive fan.
  • the supply air pressure of the supply air plenum from which the first air stream is discharged is largely equal to the supply air pressure of the supply air plenum from which the second air stream is discharged.
  • the supply air pressure in the supply air plenum from which either air stream is discharged is largely constant.
  • an air delivery mechanism comprising:
  • a nozzle arranged to discharge a second air stream, wherein the second air stream is arranged to induce the ⁇ first air stream to define a combined air stream with a mass flow rate that is variable.
  • the outlet is in close proximity to the nozzle.
  • the outlet may be one of a perforated plate and a swirl diffuser.
  • the second air stream is discharged at a higher velocity relative to the discharge of the first air stream.
  • the second air stream is a jet discharged at higher momentum relative to the discharge of the first air stream.
  • the direction of the second air stream is controllable.
  • the second air stream is arranged to control the direction of the combined air stream.
  • the second air stream is arranged to control the throw of the combined air stream.
  • the throw and discharge direction of the combined air streams is substantially determined by the throw and discharge direction of the second air stream.
  • the second air stream is discharged at a substantially constant mass flow rate.
  • the second air stream is discharged at a substantially constant throw.
  • the combined air stream is discharged at a substantially constant throw .
  • the throw of the second air stream, if discharged in the absence of the first air stream, is higher than the throw of the first air stream, if discharged in the absence of the second air stream.
  • the throw of one air stream in the absence of the other air stream is calculated by the steps of:
  • the combined air stream is discharged substantially horizontally.
  • the discharge of the first air stream is controlled by at least one damper.
  • the first air stream is supplied by at least one variable speed drive fan.
  • the supply air pressure of the supply air plenum from which the first air stream is discharged is substantially equal to the supply air pressure . of the supply air plenum from which the second air stream is discharged.
  • the supply air pressure in the supply air plenum from which either air stream is discharged is largely constant.
  • a unit for the discharge of air comprising:
  • a housing the housing incorporating a mechanism to deliver air in accordance with the third aspect of the invention; and an air supply module arranged to supply a flow of air, wherein the housing is arranged to be connected to an air supply, module arranged to supply a flow of
  • the housing is directly connected to at least one air supply opening in the air supply module .
  • the housing is connected to the air supply module via at least one air tight gasket.
  • the unit may be inserted to penetrate through a wall, ceiling or roof penetration from the outside of a space to which it is to deliver air.
  • the housing is supported by a wall, ceiling or roof penetration.
  • the housing forms a seal with a wall, ceiling or roof penetration.
  • the housing has a . shoulder arranged to engage and seal the housing to a wall, ceiling or roof.
  • the housing includes a duct for the passage of return air to the air supply module.
  • the housing is directly connected to at least one return air opening in the air supply module .
  • the housing is further connected to the air supply module via at least one air tight gasket.
  • the unit includes a peripheral flange surrounding at least one upper opening of the unit, the flange being in
  • peripheral flange of the unit engages a seal when the unit has been lowered into place in the roof aperture .
  • the seal comprises a deformable gasket.
  • the unit includes a supply air seal about the supply air opening that is engaged when the air supply module is lowered into the unit.
  • the supply air seal comprises a deformable gasket.
  • the unit includes a return air seal about the return air opening that is engaged When the air supply module is lowered into the unit.
  • the return air seal comprises a deformable gasket .
  • an air delivery system comprising:
  • a nozzle arranged to discharge a second air stream, wherein the second air stream is arranged to induce the first air stream to define a combined air stream with a mass flow rate that can be varied.
  • the outlet and the nozzle are arranged in close proximity to one another.
  • the outlet are of a perforated plate and swirl diffuser.
  • the second air stream is discharged at a higher velocity relative to the discharge of -the first air stream.
  • the second air stream is discharged at a higher momentum relative to the discharge of the first air stream.
  • the direction of the second air stream is controllable.
  • the second air stream is arranged to control the direction of the
  • the second air stream is arranged to control the throw of the- combined air stream.
  • both the throw and discharge direction of the combined air stream are substantially determined by the throw and discharge direction of the second air stream.
  • the second air stream is discharged at a substantially constant mass flow rate . In an embodiment of the sixth aspect, the second air stream is discharged at a substantially constant throw.
  • the throw of the second air stream, if discharged in the absence of the first air stream, is higher than the throw of the first air stream, if discharged in the absence of the second air stream.
  • the throw of one air stream in the absence of the other air stream is largely calculated by the steps of:
  • the combined ⁇ air stream is discharged substantially horizontally.
  • the first air stream is supplied by at least one variable speed drive fan.
  • the nozzle is controlled by an actuator arranged to adjust the discharge angle of the nozzle.
  • the actuator is electrically powered.
  • the actuator is thermally powered.
  • the perforated plate or swirl diffuser has an adjustable damper arranged to vary the mass flow rate of the first air stream.
  • the damper is electrically powered.
  • the damper is thermally powered.
  • the horizontal distance of supply air throw is adjustable.
  • the housing may house a supply air duct, and houses a supply air plenum, the nozzle, and the perforated plate or the swirl
  • the housing may be inserted through a wall, ceiling or roof penetration from the outside of . a space to which it is to deliver air.
  • the housing is directly connected to the supply air openings of an air conditioner, fan, air handler or heat pump.
  • system further comprises a housing arranged to house a return air system.
  • the return air system includes a return air duct or plenum drawing return air from the space to which the housing supplies air.
  • the housing system is directly connected to the return air openings of the air conditioner, fan, air hander or heat pump.
  • the housing is connected to the heat pump, fan, air conditioner, or air handler via an air tight gasket.
  • the housing forms a seal with a wall, ceiling or roof penetration.
  • the housing is supported by a wall, ceiling or roof penetration.
  • the housing may be inserted to penetrate through a wall, 'ceiling or roof penetration from the outside of a space to which it is to deliver air.
  • the housing has a shoulder arranged to engage and seal the housing to a wall, ceiling or roof penetration.
  • the airflow rate supplied by the fan is adjusted to maintain a
  • Figure 1A is a front view of a system for delivering air in accordance with an embodiment of the present invention
  • Figure IB is a side view of a system illustrated in Figure 1A; . /
  • Figure 2A is a front view of a system for delivering air in accordance with an embodiment of the present invention
  • Figure 2B is a side view of a system illustrated in Figure 2A;
  • Figure 3 is an isometric view of a system for delivering air in accordance with an embodiment of the present invention
  • Figure 4 is an isometric view of two systems for delivering air in accordance with an embodiment of the present invention.
  • FIG. 5 is a front view of a system for delivering air in accordance with an embodiment of the present invention being installed. Detailed Description of the Preferred Embodiment
  • FIG. 1A and IB there is shown an embodiment of a system for delivering air comprising the steps of: discharging a first air stream, wherein the mass flow rate of the first air stream can be varied; and discharging a second air stream, wherein the second air stream is arranged to induce the first air stream to deliver a combined air stream with a mass flow rate that can be varied.
  • the system is connected to a heat pump (1) (not shown in Figure IB) having a variable speed drive supply air fan system arranged to allow an operator or controller to adjust the mass flow rate of the supply air (2) travelling from heat pump (1) .
  • Supply air (2) may have a variable mass flow rate, which is delivered to supply duct (4) and supply plenum (5) .
  • supply duct (4) the various components of supply duct (4) , supply plenum (5) and return duct (6) are all contained in a common housing (7), which may be installed from the roof or ceiling of a structure.
  • the housing (7) may be connected to a heat pump (1) located on the rooftop of the structure.
  • Heat pump (1) having a variable speed drive fan, supplies air through an opening in the
  • supply air (2) is discharged from supply plenum (5) into the operating environment (16) by nozzles (8) , which produce high velocity jet-like air streams (9) with largely constant airflow rate and throw, and by perforated plates (10a) , which produce low velocity air streams (11a) .
  • One or more motorised dampers may vary the supply air stream from supply plenum (5) to perforated plates (10a), thereby varying. the airflow rate of the low velocity air streams (11a) . Because of its close
  • each low velocity air stream (11a) is induced by the adjacent high velocity air stream (9) to form a combined air stream that may be of varying volume flow rate, that has a largely constant horizontal throw, and that has a discharge direction that is
  • perforated plate (10a) may be replaced by other air outlet systems that produce low velocity discharge i comparison to that of the adjacent high velocity air stream (9) .
  • perforated plate (10a) may be replaced by a grille with an upstream damper.
  • return air is drawn from the space through grilles (12) .
  • supply duct (4) and return duct .(6) in the common housing- (7) are arranged to be installed to the underside of heat pump (1) via airtight gasket (13) and to form a watertight seal through roof penetration' upstands (14) via support shoulder (15) .
  • the supply air (2) having a variable mass flow rate is delivered to supply duct (4) and supply plenum (5) from heat pump (1) (not shown in Figure 2B) .
  • Housing (7) houses supply duct (4) , supply plenum (5) and return duct (6), which is arranged to return air from the operating environment (16) within the building to heat pump (1) or to vent it to the exterior of the building (not shown) .
  • the airflow rate of supply air (2) supplied ' by heatpump (1) is adjusted to maintain a largely constant supply air pressure in supply plenum (5) . Air from supply plenum (5) is discharged largely
  • the supply air is also discharged via motorised dampers (not shown) through swirl diffusers (10b) to produce low velocity swirling air streams (lib) of varying mass flow rate that in each case is induced by the adjacent high velocity air streams (9) to form a combined air stream that has varying volume flow rate, that has a largely constant horizontal throw, and that has a discharge direction that is determined largely by the discharge direction of the high velocity air stream (9) .
  • the high velocity air stream (also known as a jet) (9) discharged by the nozzle (8) is capable of dominating over the low velocity air stream
  • each air stream when discharged in the absence of the other, has a throw that can be described by : ,
  • the mass flow rate of the supply air stream (11a or lib) (air stream “2” in the formula) discharged in close proximity to the jet (air stream “1") may be greater than ' that of the jet (air stream ⁇ l") on condition that the discharge velocity of air stream “2" is lower than that of the jet (air stream “1") and/or the induction ratio of air stream “2" is greater than that of the jet (air stream “1"), such that the equation is satisfied. Therefore, in some embodiments, swirl discharge of air stream "2" is
  • the swirl discharge typically accounts for up to 60% of the total discharged airflow rate, thereby allowing the variable speed drive fan in the heat pump (1) to vary airflow rate from 40% under low load conditions (discharge through the jet alone) up to 100% (jet
  • Pointing the nozzle (8) into a specific direction may also direct the combined air stream largely in that same direction, as the jet (9) discharged by the nozzle (8) has the dominant airflow pattern. This is advantageous as air may be directed to a specific height of the building interior to achieve a desired effect. For example, during summer periods when the interior of the building requires cooling, the nozzle (8) may be angled upwards to
  • the nozzle (8) may be angled by an actuator controlled electronically.
  • the actuator may be thermally controlled which in some examples, includes a fluid operated piston whereby the fluid expands when heated or contracts when cooled to, provide the actuation.
  • the system 300 is arranged ' to be installed from the roof or ceiling of a building, such as a
  • the system comprises a housing 302, a
  • the discharge portion 304 and a return air duct 306 arranged to receive air from within the interior of the building to be removed or reconditioned.
  • the system 300 is connected to a heat exchange or heat-pump (not shown) directly above the system and located on the exterior of the building in order to remove the heat from the air and to pump condition air into the discharge portion 304.
  • the discharge portion 304 has an air discharge mechanism which in this embodiment comprises a number of first discharge arrangements 308 comprising a number of swirl diffusers, each arranged to deliver an air stream of low velocity, and a second discharge arrangement 310 comprising, in this embodiment a plurality of nozzles 310,' each arranged to deliver a high velocity air stream.
  • the position of the nozzles 310 can be adjusted to change the direction of the high velocity air stream.
  • the discharge portion 304 may have additional discharge apertures 312 which provide a channel for standard airflow from the plenum.
  • the low velocity air stream from 308 can be induced by the high velocity air stream from 310 to create a combined air stream with a largely constant throw as directed by the position of the nozzle.
  • the mass flow rate of the low velocity air stream can be adjusted, the air flow rate of the combined air stream created by the induction of the low velocity air stream into the high velocity air stream can therefore be varied to suit the requirements of the operating environment .
  • the mass flow rate of the low velocity air stream may be adjusted by varying the speed of the fan which supplies air to the low velocity air stream.
  • the air stream to the low velocity discharge arrangement (310) may be varied by a damper in communication with the low velocity discharge arrangement (310) so as to adjust and control the mass flow rate of the low velocity air stream.
  • This damper maybe electrically powered, although mechanical or manual control examples are possible.
  • FIG 4 an alternative installation of the embodiment of the system for delivering air is shown.
  • two systems 400 arid 402 for delivering air are installed adjacent to each other.
  • both systems 400, 402 may be serviced by a single heat pump (not shown) or operate on different heat pumps (not shown) .
  • Other installation arrangements may be possible dependent on the requirements of the operating environment.
  • FIG. 5 there is shown an installation procedure of the air delivery system through the roof of a building.
  • the system is lowered into an aperture of a roof of a building by crane.
  • Roof penetration upstands (14) are located or installed around the aperture of the roof prior to the lowering of the system into the aperture.
  • a roof gasket (not shown) may rest on roof penetration upstands (14) to form an air and water tight seal between the air delivery system, which is suspended by surrounding flange shoulder (15) to rest on roof penetration upstands (14) via the roof gasket, arid the roof.
  • a heatpump gasket (13) may be used to form an air and water tight seal between the air- delivery system and the heatpump (not shown), which rests upon the heatpump gasket.
  • the crane lowers the air delivery system into the aperture until the flange shoulders (15) of the system rest on the upstands (14) .
  • the pressing of the shoulders onto the upstands will, in some embodiments, be sufficient to provide an air and water tight seal between the aperture and the system.
  • the shoulders include a resilient material which acts as a gasket to form a tight seal between the aperture and the system.
  • the heat pump which has supply air and return air openings integrated into a flat bottom, is lowered with the supply air and return air openings aligned with the supply air 4 and return air 5 openings of the already installed system until the bottom of the heat pump compresses, by virtue of the heat pump weight, heatpump gasket 13 to form an air and " water tight seal between the already installed air delivery system and the heat pump.
  • system- may be installed in a wall, ceiling, roof penetration or other portions of a structure or building.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Air Conditioning Control Device (AREA)
  • Ventilation (AREA)

Abstract

L'invention concerne un procédé de production d'air comprenant les étapes consistant à : débiter un premier flux d'air, le débit massique du premier flux d'air pouvant varier ; et débiter un second flux d'air, le second flux d'air étant conçu de façon à ce que le premier flux d'air débite un flux d'air combiné à débit massique pouvant varier.
PCT/AU2010/001660 2009-12-08 2010-12-08 Système et procédé de production d'air WO2011069201A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NZ60109010A NZ601090A (en) 2009-12-08 2010-12-08 A system and method for delivering air
AU2010330689A AU2010330689B2 (en) 2009-12-08 2010-12-08 A system and method for delivering air
CN201080063395.XA CN102753901B (zh) 2009-12-08 2010-12-08 用于输送空气的系统和方法
EP10835301.2A EP2510289A4 (fr) 2009-12-08 2010-12-08 Système et procédé de production d'air
US13/514,974 US9885494B2 (en) 2009-12-08 2010-12-08 System and method for delivering air
AU2016203447A AU2016203447B2 (en) 2009-12-08 2016-05-25 A system and method for delivering air

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2009905988 2009-12-08
AU2009905988A AU2009905988A0 (en) 2009-12-08 A system and method for delivering air

Publications (1)

Publication Number Publication Date
WO2011069201A1 true WO2011069201A1 (fr) 2011-06-16

Family

ID=44145033

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2010/001660 WO2011069201A1 (fr) 2009-12-08 2010-12-08 Système et procédé de production d'air

Country Status (6)

Country Link
US (1) US9885494B2 (fr)
EP (1) EP2510289A4 (fr)
CN (1) CN102753901B (fr)
AU (1) AU2010330689B2 (fr)
NZ (1) NZ601090A (fr)
WO (1) WO2011069201A1 (fr)

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EP2510289A4 (fr) 2018-03-21
US9885494B2 (en) 2018-02-06
CN102753901B (zh) 2016-03-30
AU2010330689A1 (en) 2012-07-26
US20130023198A1 (en) 2013-01-24
NZ601090A (en) 2014-05-30
EP2510289A1 (fr) 2012-10-17
CN102753901A (zh) 2012-10-24
AU2010330689B2 (en) 2016-02-25

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