GB2448079A - Supply and exhaust air terminal device - Google Patents

Supply and exhaust air terminal device Download PDF

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Publication number
GB2448079A
GB2448079A GB0805682A GB0805682A GB2448079A GB 2448079 A GB2448079 A GB 2448079A GB 0805682 A GB0805682 A GB 0805682A GB 0805682 A GB0805682 A GB 0805682A GB 2448079 A GB2448079 A GB 2448079A
Authority
GB
United Kingdom
Prior art keywords
supply
exhaust air
terminal device
exhaust
air
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB0805682A
Other versions
GB2448079B (en
GB0805682D0 (en
Inventor
Heimo Ulmanen
Reijo Villikka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Halton Oy
Original Assignee
Halton Oy
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 Halton Oy filed Critical Halton Oy
Publication of GB0805682D0 publication Critical patent/GB0805682D0/en
Publication of GB2448079A publication Critical patent/GB2448079A/en
Application granted granted Critical
Publication of GB2448079B publication Critical patent/GB2448079B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • 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
    • F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
    • F24F11/022—
    • F24F11/027—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • 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
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • 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
    • 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
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • 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
    • F24F7/08—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 with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • 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
    • F24F2013/0616—Outlets that have intake openings
    • 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
    • F24F2110/30—Velocity

Landscapes

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

Abstract

A supply and exhaust air terminal device 10 comprises a blowing fan P1, supplying fresh air L1 into a supply duct 12 and further into the supply and exhaust air terminal device's supply air chamber 13. Supply chamber 13 comprises nozzles (14a1, 14a2... fig 4)) or a nozzle gap, through which air is made to flow into a mixing chamber (15). Fresh supply air L1 induces a circulated airflow L2 from a room H to flow through a heat exchanger (16) into the mixing chamber (15), so that the flows L1+L2 are combined to flow out of the device 10. A first control device 17 controls a bypass flow L3 into the room H in order to control the total flow rate Q1+Q2 into the room H. A second control device 19 controls an exhaust airflow Q3 from the room H through an exhaust air opening into an exhaust air chamber 201 and exhaust duct 20 via a second fan P2. First 17 and second 19 control devices may be linear valves that may be manual controlled or remote controlled via the use of an electric motor. Supply 12 and exhaust 20 ducts may have a pressure control device 11, 21 for controlling the pressure in and out of the device 10. A pressure sensor 18 may be provided in the supply 13 and exhaust 201 chambers 13 to determine airflow.

Description

Supply and exhaust air terminal device The invention concerns a supply
and exhaust air terminal device.
From the applicant's earlier patent application Fl 20060035 such a supply air terminal device is known, in which the flow of fresh supply air into the room space can be changed in accordance with the purpose of use of the room. The invention explicitly concerns such a supply air terminal device, with the aid of which room air is circulated through a heat exchanger, whereby the heat exchanger can be used either to cool or to heat the room air, and in which device solution said circulated airflow of the room is brought about and induced by a supply of a fresh supply airflow through nozzles or a nozzle gap. It was realized in the invention to use a separate bypass flow. The equipment comprises a control device in connection with the supply air chamber, so that said bypass flow Q2 is controlled by the control device, which is located in connection with a bypass flow opening. In said device solution the supply air duct comprises a constant pressure control device allowing control of the airflow into the room space in such a way that the pressure in the supply air chamber is nevertheless kept at its desired value in order to produce a certain airflow rate L1 through nozzles or a nozzle gap and in order to induce a circulated airflow L2. The total flow rate into the room is the sum Q1+Q2 of the airflow Q produced through nozzles or a nozzle gap and the bypass airflow Q2.
It is a problem with the above-mentioned system how to remove exhaust air in a controlled manner and at the same rate from the room space as the fresh air brought into the room space. It is realized in the invention with the above-mentioned supply air terminal device to combine an exhaust air terminal device, which in the exhaust air opening or in connection with this comprises a control device, with which it is possible to control the airflow from the room space at the same rate as the total airflow QI+Q2 supplied into the room H. According to the invention, the exhaust air item in the device solution comprises a standard pressure control device in the exhaust air duct, whereby the airflow Q3 through the exhaust duct is kept at its desired value, which preferably is the same as the flow Q i+Q into the room space..
With the above-mentioned solution a compact control of room air supply and exhaust is achieved along with versatile control. When the room's purpose of use changes, for example, from a personal room into a negotiation room, the airflow rate must be increased, but it must then be possible to keep the induction ratio in the device at its controlled or set value without any resulting changes in the value from said bypass flow. For its best functioning, the system needs a zone-specific standard pressure control device in the supply duct and a zone-specific standard pressure control device also in the exhaust duct. The control device may be, for example, a VAV control device.
The invention is characterized by the features presented in the claims.
In the following, the invention will be described by referring to some advantageous embodiments shown in the figures of the appended drawings, but there is no intention to restrict the invention to these alone.
Figure 1 shows an earlier solution,, the field of which is the subject matter of the invention.
Figure 2 is an axonometric view of a supply and exhaust air terminal device according to the invention.
Figure 3 is a side view of the device according to Figure 2.
Figure 4 is a cross-section along line I-I in Figure 2.
Figure 5 is a cross-section along line 11-Il in Figure 2.
Figure 6 is a cross-section along line Ill-Ill in Figure 2.
Figure 1 shows an earlier solution, whose field is the subject matter of the invention. The airflow into a room space takes place through a supply air terminal device and the exhaust from the room space through an exhaust valve (not shown) located on a wall of the room.
Figures 2, 3, 4, 5 and 6 show the supply and exhaust air terminal device 10 according to the invention. The supply and exhaust air terminal device 10 is a compact uniform structure, which comprises a supply air item I and an exhaust air item II in the same device body R. In the device according to the invention, the supply air item I comprises a blowing fan P, and on its outlet side a standard pressure control device, for example, a VAV control device. The standard pressure control device is indicated by reference number 11. The standard pressure control device 11 is located in a duct 12. Fresh air is supplied under a standard pressure into the supply and exhaust air terminal device 10 into its supply air chamber 13, from which the airflow takes place through a nozzle gap or through nozzles 14a, 14a2, 14a3... into a mixing chamber 15. The airflow through a nozzle gap or nozzles 14a1, 14a2, 14a3... is indicated by arrows L1. The airflow L1 induces a circulated airflow L2 to flow through a heat exchanger 16. Using the heat exchanger 16 it is possible either to cool or to heat the circulated airflow L2 of room H. Thus, the airflow L1 induces the circulated airflow L2 to flow through the heat exchanger 16. In the mixing chamber 15, the airfiows L1 and L2 are combined, and the combined airflow L1 L2 is made to flow out of the device from the mixing chamber 15 and preferably to one side of the device in the direction of the suspended ceiling of room H. Other directions of flow out of the device are also possible and the device can be applied to various devices circulating room air and comprising nozzles 14a, 14a2... or a nozzle gap.
According to the invention, the supply air chamber 13 comprises a control device 17, preferably a valve, with which the bypass airflow L. is controlled (how rate Q2) from supply air chamber 13 into room space H through an opening 170. When the supply airflow rate through the nozzles 14a1, 14a2... is Q, the total flow rate brought into the room H through the device 10 is Q and it is QI+Q2. According to the invention, said total flow rate Q and the exhaust airflow rate Q can be measured based on pressure data observed by a measuring devices 18 in the air chambers 13 and 201. Based on the total flow rate Q1+Q2, the exhaust airflow L3, Q from room space H through device 10 is controlled with the aid of a control device, such as valve 19, through the exhaust air chamber 201 into the exhaust air duct 20. The control device 17, like the control device 19 for exhaust air are so-called linear control devices. Hereby the guiding message controlling the control device 17 also controls control device 19, whereby the opening change for control device 17 caused by a change in the guiding message received by control device 17 causes a change in the airflow through control device 17, which is an airflow change equal to the flow change in the exhaust airflow Q travelling through the other control device 19. The exhaust duct 20 comprises an exhaust air opening and a standard pressure control device 21 in exhaust duct 20. The control device 21, such as preferably a VAV control device, is on the inlet side of the blowing fan P2. With the device solution 10 according to the invention a compact management of room airflows is achieved; a comprehensive control of the supply airflow of fresh air and of the airflow to be removed from the room in accordance with the purpose of use of the room and when this changes. The exhaust airflow rate L3 (Q3flow rate/time unit) through exhaust opening 200 into exhaust chamber 201 and into exhaust air duct 20 is preferably controlled to be the same by control device 19, such as a control valve, as is the flow rate Q=QI+Q2 into room H, that is, Q=QQ2=Q3. The control devices 17, 19 for the supply air and exhaust air are linear control devices, whereby the same guiding message change for control devices 17 and 19 causes a through-flow change through control devices 17, 19, which is equal in regard to the flow rate both for the inlet side and the outlet side, whereby the air rate arriving in room H is equal to the air rate to be removed from room H. The control devices 17 and 19, such as valves, are typically manual on premises where a constant airflow exists and electrically operating for premises where a changing airflow exists (negotiation rooms). To make versatility easier, the control devices are such that the manual control device can be changed to operate on electricity by attaching an actuator to it, and it can again be made manual by removing the actuator. The control devices 17, 19 function with remote control and comprise an electric motor for moving a controlling part, such as a damper, belonging to the control devices. The supply chamber 11 comprises a pressure sensor 18, with which the airfiows travelling through the device can be determined.

Claims (6)

  1. Claims 1. Supply and exhaust air terminal device (10), characterized in
    that the supply and exhaust air terminal device (10) comprises a blowing fan (P,), which is used to make fresh air flow into a supply air duct 12 and further into the supply and exhaust air tenninal device's supply air chamber (13), which comprises nozzles (14a1, 14a2...) or a nozzle gap, through which air is made to flow into a mixing chamber (15), which airflow (Li) induces a circulated airflow (L2) from a room (H) to flow through a heat exchanger (16) into the mixing chamber (15), in which the flows (L1 and L2) are combined, and the combined airflow (L1+L2) is made to flow out of the device (10), and which supply and exhaust air terminal device (10) comprises a control device (17), which can be used for controlling a bypass flow (L3) into the room space (H) in order to control the total flow rate (EQ=Qj+Q2) into the room space (H), that the supply and exhaust air terminal device (10) comprises an exhaust air opening (170), which is in connection with an exhaust air duct (20), and that there is a control device (19) for controlling the exhaust airflow (Q).
  2. 2. Supply and exhaust air terminal device (10) according to claim 1, characterized in that the supply air terminal device (10) in the supply air duct (12) comprises a standard pressure control device (11), which can be used for controlling a standard pressure into the supply air chamber (12) and that the supply and exhaust air terminal device (10) in the exhaust air duct (20) comprises a standard pressure control device (21).
  3. 3. Supply and exhaust air terminal device (10) according to claim 1 or 2, characterized in that the control devices (17, 19) for supply air and exhaust air are linear control devices, whereby the same guiding message causes a through-flow change through the control devices (17, 19), which is equal in regard to the flow rate for both the inlet side and the outlet side, whereby the air rate arriving in the room is equal to the air rate to be removed from the room.
  4. 4. Supply and exhaust air terminal device (10) according to some preceding claim, characterized in that the supply and exhaust air terminal device (10) comprises control devices (17, 19), which are manual.
  5. 5. Supply and exhaust air terminal device (10) according to some preceding claim I -3, characterized in that the control devices (17, 19) fimction with remote cOfltroi and they comprise an electric motor for moving a controlling part, such as a damper, belonging to the control devices.
  6. 6. Supply and exhaust air terminal device (10) according to some preceding claim, characterized in that the supply chamber (11) comprises a pressure sensor (18), with the aid of which the airfiows travelling through the device (10) can be determined.
GB0805682A 2007-03-30 2008-03-28 Supply and exhaust air terminal device Expired - Fee Related GB2448079B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20075213A FI122285B (en) 2007-03-30 2007-03-30 Supply and exhaust device

Publications (3)

Publication Number Publication Date
GB0805682D0 GB0805682D0 (en) 2008-04-30
GB2448079A true GB2448079A (en) 2008-10-01
GB2448079B GB2448079B (en) 2012-05-02

Family

ID=37930121

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0805682A Expired - Fee Related GB2448079B (en) 2007-03-30 2008-03-28 Supply and exhaust air terminal device

Country Status (3)

Country Link
FI (1) FI122285B (en)
GB (1) GB2448079B (en)
SE (1) SE533299C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2464984A (en) * 2008-11-03 2010-05-05 Laing O Rourke Plc Energy efficient zonal climate control system for commercial buildings
WO2011073525A1 (en) * 2009-12-18 2011-06-23 Halton Oy Supply air unit
EP3018426A1 (en) * 2014-11-07 2016-05-11 Halton OY Supply and exhaust air terminal device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144212A (en) * 1981-09-30 1985-02-27 Sulzer Ag Apparatus for conditioning room air
EP1130331A2 (en) * 2000-03-03 2001-09-05 KRANTZ-TKT GmbH Method and device for the ventilation and the temperature controlling of a room
NL1022895C2 (en) * 2003-03-11 2004-09-14 Inteco B V Ceiling connector for emitting cold or warm air, includes valve for altering direction of air in response to need for cooling or heating of room
GB2434859A (en) * 2006-01-16 2007-08-08 Halton Oy Supply air terminal device comprising an air flow regulator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408569A1 (en) * 1984-03-09 1986-02-27 Adam, Jakob, 6300 Giessen Air-conditioning installation
SE9802216L (en) * 1998-06-23 1999-12-24 Stifab Farex Ab Device for ventilation and cooling and / or heating of premises

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144212A (en) * 1981-09-30 1985-02-27 Sulzer Ag Apparatus for conditioning room air
EP1130331A2 (en) * 2000-03-03 2001-09-05 KRANTZ-TKT GmbH Method and device for the ventilation and the temperature controlling of a room
NL1022895C2 (en) * 2003-03-11 2004-09-14 Inteco B V Ceiling connector for emitting cold or warm air, includes valve for altering direction of air in response to need for cooling or heating of room
GB2434859A (en) * 2006-01-16 2007-08-08 Halton Oy Supply air terminal device comprising an air flow regulator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2464984A (en) * 2008-11-03 2010-05-05 Laing O Rourke Plc Energy efficient zonal climate control system for commercial buildings
GB2464984B (en) * 2008-11-03 2010-09-15 Laing O Rourke Plc Environmental climate control for commercial buildings
WO2011073525A1 (en) * 2009-12-18 2011-06-23 Halton Oy Supply air unit
EP3018426A1 (en) * 2014-11-07 2016-05-11 Halton OY Supply and exhaust air terminal device
US20170016632A1 (en) * 2014-11-07 2017-01-19 Halton Oy Supply and exhaust air terminal device

Also Published As

Publication number Publication date
GB2448079B (en) 2012-05-02
FI20075213A0 (en) 2007-03-30
FI122285B (en) 2011-11-15
SE0800719L (en) 2008-10-01
GB0805682D0 (en) 2008-04-30
FI20075213A (en) 2008-10-01
SE533299C2 (en) 2010-08-17

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170328