WO2005026624A1 - A ventilation unit combined with a heat recovery unit and a separate connection to a kitchen flue - Google Patents

A ventilation unit combined with a heat recovery unit and a separate connection to a kitchen flue Download PDF

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Publication number
WO2005026624A1
WO2005026624A1 PCT/NO2004/000236 NO2004000236W WO2005026624A1 WO 2005026624 A1 WO2005026624 A1 WO 2005026624A1 NO 2004000236 W NO2004000236 W NO 2004000236W WO 2005026624 A1 WO2005026624 A1 WO 2005026624A1
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WO
WIPO (PCT)
Prior art keywords
air
extract
ventilation
ventilation unit
unit
Prior art date
Application number
PCT/NO2004/000236
Other languages
French (fr)
Inventor
Runar Danielsen
Original Assignee
Systemair As
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 Systemair As filed Critical Systemair As
Publication of WO2005026624A1 publication Critical patent/WO2005026624A1/en

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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
    • 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
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • 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
    • F24F11/77—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 by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F2012/007—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using a by-pass for bypassing the heat-exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F24F2203/104—Heat exchanger wheel
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to a ventilation unit with heat recovery (referred to below as the ventilation unit) from the ventilation extract and with a separate flue from, for example, a kitchen/toilet room.
  • the ventilation unit can be adapted for various mounting situations as it can be oriented in various directions and be mounted on a wall or in a ceiling.
  • the invention has as its object to remedy the drawbacks of the prior art .
  • a ventilation unit intended for the balanced ventilation of smaller housing units and similar is designed for positioning underneath a ceiling or on a wall.
  • a tight enclosing cabinet possibly reinforced with a framework, is enclosing the ventilation unit.
  • the cabinet is provided with standard duct connecting pieces in accordance with the prior art of, for example, a diameter of 125 mm for the connection of pipe ducts for the inlet and distribution of fresh air (supply air) , suction of extract air from living rooms etc., suction of extract air from a cooker hood or similar and collective discharge of extract air.
  • the cabinet also comprises mounting details for hanging the unit from a ceiling or on a wall. Further, the cabinet is provided with inspection hatches suitable to be opened for maintenance etc .
  • the unit In a through passage for fresh air the unit is provided with a fresh air inlet filter, a supply fan and advantageously a heating element for supplying supplementary heat to the fresh air.
  • the heating element advantageously has a thermostatic control.
  • the unit In a through passage for extract air the unit is provided with an extract fan and preferably an extract filter.
  • the purpose of the extract filter is, among other things, to prevent fouling of the heat exchanger.
  • the extract fan communicates with both the cooker hood inlet and the ordinary inlet for extract air.
  • a rotary heat exchanger is arranged in the unit, so that the fresh air and the ordinary extract air will pass through separate parts of the heat exchanger for heat to be transferred from the warm air to the cold air.
  • the extract air drawn in through the cooker hood inlet bypasses the heat exchanger as it is drawn into a separate duct in the unit and is only mixed with the normal extract air just before, or when, passing through the common extract fan.
  • the unit is provided with a control unit for electric motors of the fans and heat exchanger and necessary wiring for the connection of electrical current and control signals .
  • the control unit suitably comprises a temperature control for automatic tripping of the heat exchanger, possibly changeover to cooling of fresh air if the outdoor air has a higher temperature than the indoor air, by the use of a cooling plant .
  • the control unit suitably comprises a speed control for the extract and supply fans, so that they are adjusted to a higher capacity when a damper in the cooker hood is opened, for example. Thereby balanced ventilation is maintained also by forced cooker extraction.
  • the unit is suitably provided with side covers and inspection hatches sealing tightly, by means of seals, against the cabinet/framework in their closed position. The inspection hatches can be released and opened by means of suitable locking devices .
  • the unit Due to the fact that the rotary heat exchanger works independently of its orientation and does not require a condensate drain either, the unit exhibits several possible mounting positions. The positions and configuration of the inspection hatches also cooperates therein.
  • Filters, fans, heat exchanger and control unit may conveniently be removed through the inspection hatches of the cabinet in every possible mounting position.
  • FIG. 1 shows a side view of a ventilation unit according to the invention, in which, for the sake of exposition, inspection hatches have been removed and the flow paths of the air are shown;
  • Figure 2 shows an end view of the ventilation unit seen towards a fresh air inlet and an extract air discharge
  • Figure 3 shows an end view of the ventilation unit seen towards an outlet for supply air and an inlet for extract air;
  • Figure 4 shows in perspective a principle drawing of a complete ventilation system.
  • Figure 1 shows a ventilation unit 1 with a fresh air filter 3 , a rotary heat exchanger 5 , a supply fan 7 and a supplementary heat element 9. Further the unit 1 is provided with an extract filter 11 and an extract fan 13. The fans 7, 13 are provided with integrated electric motors 15, 17.
  • the unit 1 is provided with a fresh air duct connection 21, supply air duct connection 23, extract duct connection 25, cooker flue connection 27 and a discharge duct connection 29.
  • a framework 31 comprises mounts (not shown) for inspection hatches (not shown) .
  • Duct walls 33, 33' separate fresh air from extract air.
  • the heat exchanger 5 is provided with a partition wall (not shown) between the fresh air duct and the extract duct.
  • the heat exchanger 5 is driven by an electric motor (not shown) .
  • the fans 7, 13, heat exchanger 5 and heating element 9 are all connected to a control unit 41.
  • the arrow A is indicating the flow path of the fresh air.
  • the supply air (the filtered fresh air) which is blown into the rooms of the building, is indicated by the arrow B.
  • Ordinary extract air is indicated by the arrow C and extract air from a cooker hood is indicated by the arrow D.
  • the discharge air (the used air which is expelled from the building) .
  • the unit 1 is provided with a cable 51 for the supply of power, a signal cable 53 with a thermostat (not shown) to be placed in a ventilated room or in the flow of supply air, and sockets 55, 55', 57 for the connection of signal cables.
  • a cooker hood 61 is arranged to send signals through a cable 61' connected to the socket 55 to the control unit 41.
  • a control timer (not shown) is arranged to transmit signals to the control unit 41.
  • a control panel 63 is arranged to transmit signals to and receive signals from the control unit 41.
  • the unit 1 is connected at the fresh air duct connection 21 to a fresh air duct 71 extending to an external fresh air valve 72.
  • a supply air duct 73 is connected at the supply air duct connection 23 .
  • the supply air duct 73 is branched to several blow-in openings 74.
  • an extract duct 75 is connected at the extract duct connection 25 .
  • the extract duct 75 is branched to several suction openings 76.
  • the cooker flue connection 27 is connected to a cooker flue 77 extending and being connected to the cooker hood 61.
  • the cooker hood 61 comprises a damper (not shown) which is provided with a switch or sensor (not shown) connected through the signal wire 61' to the control unit 41.
  • the damper (not shown) of the cooker hood is arranged to close the ventilation opening completely, when the damper is in its closed position.
  • the cooker hood is suitably provided with a filter (not shown) suitable for catching fat etc.
  • the discharge duct connection 29 is connected to a discharge duct 79 extending to an external discharge valve 80.
  • the unit 1 is mounted by means of brackets (not shown) to a ceiling or a wall.
  • the supply fan 7 sucks fresh air through the fresh air valve 72 via the fresh air filter 3 through the suction portion of the heat exchanger 5, where the fresh air may absorb or give off heat, depending on the selected mode of operation.
  • the fresh air then passes the heating element 9 , where heat may by supplied to the air according to the selected mode of operation and the signal input of the control unit 41 from the thermostat (not shown) and control panel 63.
  • the fresh air is then distributed through the supply air duct 73 and is blown through the blow-in openings 74 into a room needing ventilation.
  • the extract fan 13 In order to achieve balanced ventilation the extract fan 13 simultaneously sucks an equal amount of air through the suction openings 76 via the extract duct 75 and the extract filter and through the discharge portion of the heat exchanger 5 , where the extract air may give off or absorb heat, depending on the selected mode of operation. The extract fan then blows the extract air through the discharge duct 79 out of the building via the external discharge valve 80.

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

Abstract

A ventilation unit (1) for balanced ventilation comprising a heat exchanger (5), a supply fan (7), an extract fan (13), duct connections (21, 23) for fresh air (A) and supply air (B), duct connections (25, 29) for extract air (C) and discharge air (CD) and a separate duct connection (27) for extract air (D) from an extraction point (61) arranged with an adjustable opening, for example in the form of a kitchen hood, the ventilation unit (1) being arranged to carry the extract air (D) sucked in by the extract fan (13) through the separate duct connection (27) outside the heat exchanger (5), and the extract fan (13) being arranged to simultaneously suck air (C, D) through both duct connections (25, 27) for extract air and deliver it as discharge air (CD) to the duct connection (29) for air discharge.

Description

A VENTILATION UNIT COMBINED WITH A HEAT RECOVERY UNIT AND A SEPARATE CONNECTION TO A KITCHEN FLUE
The invention relates to a ventilation unit with heat recovery (referred to below as the ventilation unit) from the ventilation extract and with a separate flue from, for example, a kitchen/toilet room. The ventilation unit can be adapted for various mounting situations as it can be oriented in various directions and be mounted on a wall or in a ceiling.
An increase in the building of small housing units (30-70 m2) means altered needs for ventilation plants. In particular this affects the size of the ventilation unit. To a great degree, the prior art represents space-requiring units for mounting in rooms where human beings will not be staying for any length of time, or built into, for example, a kitchen cupboard. Limited space results in the design and use of ventilation units involving problems of noise, filter size, capacity, design (duct routes etc.).
When a high-efficiency heat recovery unit, like a rotary heat exchanger, is used, a flue from the kitchen cannot be connected to it, as this will result in the transfer of smell through the heat exchanger to the fresh air and also in fouling of the heat exchanger by fat from the cooking. The set of problems may partly be the same for extract air from other types of rooms . With the prior art there is a need for a separate ventilation system with a separate fan. This results in a more expensive installation, higher energy consumption and imbalanced ventilation when the kitchen flue is in use. A state of underpressure occurs, and there is a need for fresh air to be let in through valves or leaks in walls/windows/doors . The advantages of balanced ventilation disappear and there will be the drawbacks of draught, admission of unfiltered air, noise through ventilation openings etc .
The invention has as its object to remedy the drawbacks of the prior art .
The object is realized through the features stated in the description below and in the following Claims.
A ventilation unit intended for the balanced ventilation of smaller housing units and similar is designed for positioning underneath a ceiling or on a wall.
A tight enclosing cabinet, possibly reinforced with a framework, is enclosing the ventilation unit. The cabinet is provided with standard duct connecting pieces in accordance with the prior art of, for example, a diameter of 125 mm for the connection of pipe ducts for the inlet and distribution of fresh air (supply air) , suction of extract air from living rooms etc., suction of extract air from a cooker hood or similar and collective discharge of extract air. The cabinet also comprises mounting details for hanging the unit from a ceiling or on a wall. Further, the cabinet is provided with inspection hatches suitable to be opened for maintenance etc . In a through passage for fresh air the unit is provided with a fresh air inlet filter, a supply fan and advantageously a heating element for supplying supplementary heat to the fresh air. The heating element advantageously has a thermostatic control. In a through passage for extract air the unit is provided with an extract fan and preferably an extract filter. The purpose of the extract filter is, among other things, to prevent fouling of the heat exchanger. The extract fan communicates with both the cooker hood inlet and the ordinary inlet for extract air.
A rotary heat exchanger is arranged in the unit, so that the fresh air and the ordinary extract air will pass through separate parts of the heat exchanger for heat to be transferred from the warm air to the cold air. In contrast, the extract air drawn in through the cooker hood inlet bypasses the heat exchanger as it is drawn into a separate duct in the unit and is only mixed with the normal extract air just before, or when, passing through the common extract fan.
Further, the unit is provided with a control unit for electric motors of the fans and heat exchanger and necessary wiring for the connection of electrical current and control signals .
The control unit suitably comprises a temperature control for automatic tripping of the heat exchanger, possibly changeover to cooling of fresh air if the outdoor air has a higher temperature than the indoor air, by the use of a cooling plant .
The control unit suitably comprises a speed control for the extract and supply fans, so that they are adjusted to a higher capacity when a damper in the cooker hood is opened, for example. Thereby balanced ventilation is maintained also by forced cooker extraction. The unit is suitably provided with side covers and inspection hatches sealing tightly, by means of seals, against the cabinet/framework in their closed position. The inspection hatches can be released and opened by means of suitable locking devices .
What has been described about the application of the separate flue from the cooker, also applies if, because of a wish to keep extract air mixed with particles or smell out of the heat exchanger, the flue is used for other purposes.
Due to the fact that the rotary heat exchanger works independently of its orientation and does not require a condensate drain either, the unit exhibits several possible mounting positions. The positions and configuration of the inspection hatches also cooperates therein.
Filters, fans, heat exchanger and control unit may conveniently be removed through the inspection hatches of the cabinet in every possible mounting position.
Below is described a non-limiting example of a preferred embodiment, which is visualized in the accompanying drawings, in which:
Figure 1 shows a side view of a ventilation unit according to the invention, in which, for the sake of exposition, inspection hatches have been removed and the flow paths of the air are shown;
Figure 2 shows an end view of the ventilation unit seen towards a fresh air inlet and an extract air discharge;
Figure 3 shows an end view of the ventilation unit seen towards an outlet for supply air and an inlet for extract air; Figure 4 shows in perspective a principle drawing of a complete ventilation system.
Figure 1 shows a ventilation unit 1 with a fresh air filter 3 , a rotary heat exchanger 5 , a supply fan 7 and a supplementary heat element 9. Further the unit 1 is provided with an extract filter 11 and an extract fan 13. The fans 7, 13 are provided with integrated electric motors 15, 17.
The unit 1 is provided with a fresh air duct connection 21, supply air duct connection 23, extract duct connection 25, cooker flue connection 27 and a discharge duct connection 29. A framework 31 comprises mounts (not shown) for inspection hatches (not shown) . Duct walls 33, 33' separate fresh air from extract air. In accordance with the prior art, the heat exchanger 5 is provided with a partition wall (not shown) between the fresh air duct and the extract duct. In accordance with the prior art, the heat exchanger 5 is driven by an electric motor (not shown) .
The fans 7, 13, heat exchanger 5 and heating element 9 are all connected to a control unit 41.
The arrow A is indicating the flow path of the fresh air. The supply air (the filtered fresh air) which is blown into the rooms of the building, is indicated by the arrow B. Ordinary extract air is indicated by the arrow C and extract air from a cooker hood is indicated by the arrow D. is indicated by the arrow CD The discharge air (the used air which is expelled from the building) .
The unit 1 is provided with a cable 51 for the supply of power, a signal cable 53 with a thermostat (not shown) to be placed in a ventilated room or in the flow of supply air, and sockets 55, 55', 57 for the connection of signal cables. A cooker hood 61 is arranged to send signals through a cable 61' connected to the socket 55 to the control unit 41. Through a cable (not shown) connected to the socket 55', a control timer (not shown) is arranged to transmit signals to the control unit 41. Through a cable 63' connected to the socket 57, a control panel 63 is arranged to transmit signals to and receive signals from the control unit 41.
The unit 1 is connected at the fresh air duct connection 21 to a fresh air duct 71 extending to an external fresh air valve 72. At the supply air duct connection 23 a supply air duct 73 is connected. The supply air duct 73 is branched to several blow-in openings 74. At the extract duct connection 25 an extract duct 75 is connected. The extract duct 75 is branched to several suction openings 76. The cooker flue connection 27 is connected to a cooker flue 77 extending and being connected to the cooker hood 61. The cooker hood 61 comprises a damper (not shown) which is provided with a switch or sensor (not shown) connected through the signal wire 61' to the control unit 41. The damper (not shown) of the cooker hood is arranged to close the ventilation opening completely, when the damper is in its closed position. The cooker hood is suitably provided with a filter (not shown) suitable for catching fat etc. The discharge duct connection 29 is connected to a discharge duct 79 extending to an external discharge valve 80.
The unit 1 is mounted by means of brackets (not shown) to a ceiling or a wall.
In operation the supply fan 7 sucks fresh air through the fresh air valve 72 via the fresh air filter 3 through the suction portion of the heat exchanger 5, where the fresh air may absorb or give off heat, depending on the selected mode of operation. The fresh air then passes the heating element 9 , where heat may by supplied to the air according to the selected mode of operation and the signal input of the control unit 41 from the thermostat (not shown) and control panel 63. The fresh air is then distributed through the supply air duct 73 and is blown through the blow-in openings 74 into a room needing ventilation. In order to achieve balanced ventilation the extract fan 13 simultaneously sucks an equal amount of air through the suction openings 76 via the extract duct 75 and the extract filter and through the discharge portion of the heat exchanger 5 , where the extract air may give off or absorb heat, depending on the selected mode of operation. The extract fan then blows the extract air through the discharge duct 79 out of the building via the external discharge valve 80.
When there is a need for forced ventilation from the cooker hood 61, its damper is opened, whereby the control unit 41 simultaneously receives a signal through the cable 61' and thereby adjusts the speed of the fans 7, 13 to a maximum level set in advance. The increased extraction ensures that there will be the necessary ventilation from the area above the cooker. The extract air passing through the cooker hood and containing odours, fat etc., bypasses the extract filter 11 and the heat exchanger 5. Thereby any transfer of smell to the supply air via the heat exchanger 5 is prevented, and the heat exchanger 5 and the extract filter 11 do not receive fat particles from the cooker flue.

Claims

C L A I M S
1. A ventilation unit (1) for balanced ventilation comprising a heat exchanger (5) , a supply fan (7) , an extract fan (13), duct connections (21, 23) for fresh air (A) and supply air (B) , duct connections (25, 29) for extract air (C) and discharge air (CD) and a separate duct connection (27) for extract air (D) from an extraction point (61) arranged with an adjustable opening, for example in the form of a kitchen hood, c h a r a c t e r i z e d i n that the ventilation unit (1) is arranged to carry the extract air (D) sucked in by the extract fan (13) through the separate duct connection (27) outside the heat exchanger (5), and that the extract fan (13) is arranged to simultaneously suck air (C, D) through both duct connections (25, 27) for extract air and deliver it as discharge air (CD) through the duct connection (29) for air discharge.
2. A ventilation unit (1) in accordance with claim 1, charac t er i z ed i n that the heat exchanger (5) is a rotary heat exchanger.
3. A ventilation unit (1) in accordance with claim 1, char ac t er i z ed i n that the ventilation unit (1) is provided with a control unit (41) .
4. Ventilation unit (1) in accordance with claim 3, c h a r a c t e r i z e d i n that, on activation of the adjustable extraction opening (61) connected to the separate duct connection (27) for extract air (D) , the control unit (41) is arranged to adjust the ventilation capacity by a simultaneous change in the rotational speed of the supply fan (7) and the extract fan (13) in order thereby to maintained balanced ventilation.
5. A ventilation unit (1) in accordance with claim 1, charac t er i z e d in that the ventilation unit (1) comprises a heating element (9) .
6. A ventilation unit (1) in accordance with claim 5, charac t er i z e d in that the heating element (9) is thermostat-controlled.
PCT/NO2004/000236 2003-09-12 2004-08-05 A ventilation unit combined with a heat recovery unit and a separate connection to a kitchen flue WO2005026624A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20034036A NO20034036L (en) 2003-09-12 2003-09-12 Ventilation unit combined with heat recovery and separate connection to kitchen extractor
NO20034036 2003-09-12

Publications (1)

Publication Number Publication Date
WO2005026624A1 true WO2005026624A1 (en) 2005-03-24

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012180950A (en) * 2011-02-28 2012-09-20 Toyo Kitchen & Living Co Ltd Range hood for smoke emission, and duct cover
FR2995064A1 (en) * 2012-09-06 2014-03-07 Systel Ventilation device for use under roof at ceiling of livestock building of animals, has air inlet opening off-centered with respect to base of air extraction column and comprising edge at extension of rear face of box opposite to frontage
ITBO20130036A1 (en) * 2013-01-28 2014-07-29 Giuliano CONVEYOR FOR SUCTION HOODS
RU2539668C2 (en) * 2013-04-18 2015-01-20 Владимир Евгеньевич Воскресенский Supply and exhaust plant with exhaust heat recovery and indirect adiabatic cooling of supply air
NO20151317A1 (en) * 2014-10-07 2016-04-08 Thermex Scandinavia As extraction system
CN107575985A (en) * 2017-08-31 2018-01-12 杭州老板电器股份有限公司 A kind of kitchen air purifying system
EP3450873A1 (en) * 2017-09-01 2019-03-06 Enervent Zehnder Oy Air supply device
CN110966694A (en) * 2018-09-29 2020-04-07 南通华信中央空调有限公司 Movable public toilet with fresh air heat recovery function
EP3779292A4 (en) * 2018-04-23 2021-06-02 Gree Electric Appliances, Inc. of Zhuhai Air conditioning system and method for controlling same

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DE3834440A1 (en) * 1988-10-10 1990-04-12 Josef Dipl Ing Mollerus Device with heat recovery system for aerating and deaerating rooms with excess heat
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DE3834440A1 (en) * 1988-10-10 1990-04-12 Josef Dipl Ing Mollerus Device with heat recovery system for aerating and deaerating rooms with excess heat
SE500073C2 (en) * 1992-01-21 1994-04-11 Futurum Ab Ventilation system with cooker hood
JPH109635A (en) * 1996-06-19 1998-01-16 Mitsubishi Electric Corp Heat exchanger type ventilating device
US20020153133A1 (en) * 1998-11-09 2002-10-24 Building Performance Equipment Inc. Ventilator system and method
WO2001084057A1 (en) * 2000-05-02 2001-11-08 Mattsson, Torsten Ventilation device
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PATENT ABSTRACTS OF JAPAN vol. 1998, no. 05 30 April 1998 (1998-04-30) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 09 3 September 2003 (2003-09-03) *

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JP2012180950A (en) * 2011-02-28 2012-09-20 Toyo Kitchen & Living Co Ltd Range hood for smoke emission, and duct cover
FR2995064A1 (en) * 2012-09-06 2014-03-07 Systel Ventilation device for use under roof at ceiling of livestock building of animals, has air inlet opening off-centered with respect to base of air extraction column and comprising edge at extension of rear face of box opposite to frontage
ITBO20130036A1 (en) * 2013-01-28 2014-07-29 Giuliano CONVEYOR FOR SUCTION HOODS
RU2539668C2 (en) * 2013-04-18 2015-01-20 Владимир Евгеньевич Воскресенский Supply and exhaust plant with exhaust heat recovery and indirect adiabatic cooling of supply air
NO20151317A1 (en) * 2014-10-07 2016-04-08 Thermex Scandinavia As extraction system
CN107575985A (en) * 2017-08-31 2018-01-12 杭州老板电器股份有限公司 A kind of kitchen air purifying system
EP3450873A1 (en) * 2017-09-01 2019-03-06 Enervent Zehnder Oy Air supply device
EP3779292A4 (en) * 2018-04-23 2021-06-02 Gree Electric Appliances, Inc. of Zhuhai Air conditioning system and method for controlling same
US11976825B2 (en) 2018-04-23 2024-05-07 Gree Electric Appliances, Inc. Of Zhuhai Air conditioning system and method for controlling same
CN110966694A (en) * 2018-09-29 2020-04-07 南通华信中央空调有限公司 Movable public toilet with fresh air heat recovery function

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NO20034036D0 (en) 2003-09-12

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