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GB2569111A - A positive input ventilation system with active carbon filter - Google Patents

A positive input ventilation system with active carbon filter Download PDF

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Publication number
GB2569111A
GB2569111A GB1719999.3A GB201719999A GB2569111A GB 2569111 A GB2569111 A GB 2569111A GB 201719999 A GB201719999 A GB 201719999A GB 2569111 A GB2569111 A GB 2569111A
Authority
GB
United Kingdom
Prior art keywords
fan
active carbon
carbon filter
ventilating
habitable space
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
GB1719999.3A
Other versions
GB201719999D0 (en
GB2569111B (en
Inventor
Roberts Huw
Jenkins Richard
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.)
Polypipe Ltd
Original Assignee
Polypipe 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 Polypipe Ltd filed Critical Polypipe Ltd
Priority to GB1719999.3A priority Critical patent/GB2569111B/en
Publication of GB201719999D0 publication Critical patent/GB201719999D0/en
Priority to EP18782179.8A priority patent/EP3717836A1/en
Priority to PCT/GB2018/052807 priority patent/WO2019106329A1/en
Publication of GB2569111A publication Critical patent/GB2569111A/en
Application granted granted Critical
Publication of GB2569111B publication Critical patent/GB2569111B/en
Active 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
    • F24F7/00—Ventilation
    • F24F7/003—Ventilation in combination with air cleaning
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • 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
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
    • F24F2011/0004—Control or safety arrangements for ventilation for admittance of outside air to create overpressure in a room
    • 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
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • 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
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)

Abstract

A positive input ventilation system comprises a fan 8 which outputs a positive pressure airflow exceeding atmospheric pressure, a vent 22 for supplying airflow from the fan to a habitable space 2 within a building, and an active carbon filter 24 fluidly connected to the fan and the vent. The active carbon filter is located between the fan and the vent to filter airflow flowing from the fan to the vent. The system may comprise a bypass channel in fluid connection with the fan and the vent and flow control means which selectively diverts flow from the active carbon filter to the bypass channel to bypass the active carbon filter, and a controller which controls operation of the flow control means. The fan may be located in the loft space 1 of the building. A method of ventilating a habitable space within a building comprises operating a fan to output air at a positive pressure exceeding atmospheric pressure, filtering the air output by the fan into the habitable space using an active carbon filter to remove NOx, and supplying the active carbon filtered air to the habitable space of the building.

Description

The present invention relates to a positive input ventilation system, and in particular a positive ventilation system including an active carbon filter for reducing NOx levels within the habitable space of a building.
A significant proportion of UK households have been found to be poorly ventilated, which can result in condensation issues such as streaming windows, mould growth and poor indoor air quality. Older homes in particular are inadequately ventilated and air quality can be further worsened by factors such as occupant lifestyles, the installation of wall and loft insulation, and a reduction in the use of central heating due to increases in fuel costs.
It is known to provide Positive Input Ventilation (PIV) units in residential properties to improve air quality within the property, reduce or eliminate surface condensation and prevent mould growth. A PIV system typically comprises a fan unit, which is located within the loft or roof space of the property. The fan is arranged to draw external air into the property. An outlet diffuser vent is arranged to pump the external air drawn in by the fan from within the loft space into the habitable spaces of the building. The fan is configured such that the supply pressure of the air is greater than atomspheric pressure, which places the living space under a slight positive pressure. The application of a positive air pressure forces air within the space to flow out of the building through natural ventilation gaps such as window trickle vents, doors etc. Additional venting may be provide if required. In this way, the air within the living space is continuously replenished with fresh air. This reduces humidity and hence acts to remove or prevent the condensation.
A standard natural ventilation system operates by extracting air from the property, and relies on air being drawn back into the property through multiple supply points such as window and door trickle vents. PIV units operate in reverse and actively supply air to the property. As such, the air supply is far more controllable.
PIV units may include particulate filters to improve air quality by remove harmful particulates from the air. Indoor pollutants from cooking and cleaning, as well as pollen and Radon gas, and moisture generated through for example the drying of clothes and respiration of the occupants, are reduced as the air volume within the property is continuously replaced. It was also commonly understood that PIV systems acted to reduce harmful traffic emissions, such as NOx, from within the property in the same manner. However, the applicant has surprisingly found that the reverse is the case, and that PIV systems may actually increase the concentration of NOx within a property.
The applicant conducted air quality studies within residential properties in which PIV units are installed. During the study the levels of NOx within the property were measured with the PIV unit operating, and with the PIV unit not in operation. It was surprisingly found that the levels of NOx within the property increased rather than decreased while the PIV unit was operational. It was concluded that external air having higher levels of NOx due to traffic in the vicinity of the property was being drawn into the property, and was replacing the air within the property, which in a normal unventilated state would be lower in NOx than the external air. Therefore, while the improvements in air humidity, and corresponding reduction in condensation and mould, were still achieved, there was conversely a decrease in air quality in terms of NOx levels.
It is therefore desirable to provide an improved positive input ventilation system which addresses the above described problems and/or which offers improvements generally.
According to the present invention there is provided a method of ventilating a habitable space as described in the accompanying claims.
In an embodiment of the invention there is provided a method of ventilating a habitable space within a building. The method comprises operating a fan to output air at a positive pressure exceeding atmospheric pressure. The air output by the fan is filtered using an active carbon filter to remove NOx therefrom. The active carbon filtered air is then supplied to the habitable space of the building.
Conventional PIV systems do not include in-line filters, and PIV systems of the prior art are not know to include active carbon filters. Instead efforts are made to avoid restrictions in the supply airflow, such as would be created by an in-line active carbon filter. A PIV system must deliver airflow to the property at a predetermined positive supply pressure, and therefore restriction in the air supply flow path would need to be compensated for by increasing fan speed, and hence power, to ensure that the supply pressure is maintained. Therefore, any restriction in the flow path results in a reduction in efficiency. Furthermore, it was previously considered that positive input ventilation improved air quality within the property through forced air replacement. Hence, there was no perceived requirement for active carbon filtering. The present invention derives from the applicant's surprising discovery linking PIV systems to increased NOx levels within the property.
The fan is preferably arranged to draw air from outside the building. In a preferred embodiment the fan is located in the loft space of the building and draws airflow from within the loft space. External air is drawn into the loft space to replace the air transferred by the fan. The fan may alternatively or in addition include inlet ducting connected to the external atmosphere via an external inlet vent.
The air may exit the fan at outlet pressure Pl and exit the active carbon filter at supply pressure P2 which is lower than outlet pressure Pl due to pressure drop across the active carbon filter. Preferably the fan is operated such that the supply pressure P2 is a positive pressure exceeding atmospheric pressure.
Preferably the fan speed is boosted to overcome the pressure drop across the active carbon filter relative to the fan speed required without the carbon filter located within the supply flowpath.
The fan preferably includes at least one particulate filter arranged to remove particulate matter from the airflow output by the fan. The fan may include at least one air inlet and the at least one particulate filter is located at the at least one air inlet to filter air as it enters the fan.
The fan is preferably located within a loft space of the building.
The method may further comprise bypassing the active carbon filter based on external atmospheric conditions. The system includes a bypass channel and a bypass damper configured to bypass the active carbon filter by diverting airflow to the bypass channel. In normal operation, in which flow through the active carbon filter is desired, the bypass damper closes the bypass channel.
The method may further comprise lowering fan speed when the active carbon filter is bypassed. Lowering fan speed advantageously reduces power and increase efficiency.
The method may comprise operating the bypass based on a schedule of operation which defines set times for operation of the active carbon filter.
The ventilation system preferably includes a controller configured to operate the bypass, and the active carbon filter is bypassed based on data indicative of the external NOx levels being below a predetermined level. The term data indicative of the external NOx levels includes any information relating to the external NOx levels. The data may for example by derived from historical government air quality data. By way of further example the data may be based on air quality forecast information. The data may alternatively include the output of a sensor providing real time monitoring of NOx levels. In a further alternative the data may be a schedule of operation which defines set times for operation of the active carbon filter.
The system may include at least one sensor arranged to generate said data indicative of external NOx levels.
In another aspect of the invention there is provided a positive input ventilation system comprising a fan configured to output a positive pressure airflow exceeding atmospheric pressure. A supply vent is provided for supplying airflow from the fan to a habitable space within a building. An active carbon filter is fluidly connected to the fan and the vent. The active carbon filter is arranged to filter airflow flowing from the fan to the vent. The term vent is used generally to mean any aperture arranged to permit the flow of air into a room, and includes diffusers, grills, open apertures or any other suitable air inlet. The active carbon filter may be an in-line filter located between the fan and the vent. Alternatively the active carbon filter may be directly connected to the fan, or may be integrated in the vent.
Preferably a supply duct connects the fan and the vent, and the active carbon filter is an in-line filter located along said supply duct.
A bypass channel may be provided that is in fluid connection with the fan and the vent, meaning that air may be passed to the vent from the fan via the bypass channel. Flow control means, such as a bypass damper, is arranged to selectively divert flow from the active carbon filter to the bypass channel to bypass the active carbon filter. A controller is configured to control operation of the flow control means. The bypass channel enables the carbon filter to be bypassed when not required. This advantageously removes the pressure drop across the carbon filter and allows the fan to be operated at a reduced speed, thereby improving efficiency.
The controller is preferably configured to control the flow control means to the bypass channel to bypass the active carbon filter based on external atmospheric conditions. The external atmospheric conditions are preferably NOx levels, and more specifically may be NO2 levels. The controller may be configured to operate the bypass based on historical measurement data relating to NOx levels. The data may be locally derived or may be based on national averages. The data will preferably indicate times periods when NOx levels exceed a minimum threshold. The data may be stored locally on the device, or may be provided to the device from a remote location. The remote provision of data, such as via a mobile network connection, or via an internet connection, enables the data to be updated periodically, or on a real time basis.
The controller is preferably configured to divert flow to the bypass channel to bypass the active carbon filter based on data indicative of the external NOx levels being below a predetermined level. The predetermined level may be a fixed value, or may vary depending on factors such as time of day, temperature, humidity or detected occupancy within the property.
The system preferably includes at least one sensor arranged to generate said data indicative of external NOx levels. The sensor may be local to the device and to the property, and may for example be mounted to an external surface of the property, or within the loft space. Alternatively the sensor may be located at a remote location and may supply data to numerous devices simultaneously.
The present invention will now be described by way of example only with reference to the following illustrative figure in which:
Figure 1 shows a ventilation system according to an embodiment of the invention.
A residential building typically includes an apex roof having a loft or roof space. Referring to Figure 1, a loft space 1 sits atop the habitable space 2 of a building. The loft space 1 is separated from the habitable space by a ceiling 4. A ventilation unit 6 is provided, which is located within the loft space 1 of the building. The ventilation unit 6 includes a fan 8, which suspended from the roof joists within the loft space 1 by a cable 10 to minimise the transmission of vibration to the habitable space 2. Alternatively the fan 8 may be supported on the ceiling 12, or mounted in any suitable location within the loft space 1.
The fan 8 comprises air inlets 14 arranged to draw in air from within the loft space 1. Cylindrical particulate filters 15 are provided over the inlets 12 to remove particulate matter from the airflow entering the fan 8. The filters are preferably configured to filter particulate matter at the PM10 level. A supply duct 16 extends from the outlet 18 of the fan 8 and is connected to a vent 22 in the ceiling of the habitable space 2. Air flows from the fan 14 to the vent 22 via the supply duct 16, and into the habitable space 8 via the vent 22.
An active carbon filter 24 is provided as an in-line filter and is located along the supply duct 16 between the fan 14 and the vent 22. The active carbon filter 24 is connected to the supply duct 20 such that all air flowing to the vent 22 through the duct 16 passes through the active carbon filter 24. The duct 16 includes a first duct section 26 extending between the fan 14 and the active carbon filter 24, and a second duct section 28 extending between the active carbon filter 24 and the vent 22.
The active carbon filter 24 is a cartridge filter, comprising a housing 30 containing one or more removable carbon filter cartridges containing an activated carbon material. The housing 30 includes an inlet 32 connected the first duct section 26 and an outlet 34 connected to the second duct section 28. The size of the housing 30 and number of cartridges may be varied depending on the required airflow and pressure drop.
A bypass channel (not shown) is provided which is connected to the supply duct 16. The bypass channel is arranged to carry air between the fan 8 and the vent 22. A bypass damper is arranged to selectively divert airflow from the fan 8 between the carbon filter 24 and the bypass channel. In a first mode of operation the bypass damper blocks the bypass channel and directs flow through the carbon filter 24. In a second mode of operation the bypass damper blocks airflow to the carbon filter and directs flow through the bypass channel such that the airflow bypasses the carbon filter 24.
The ventilation system includes a controller configured to control operation of the bypass damper. The controller enables the system to automatically bypass the carbon filter 24 when flow through the filter is not desired. The controller may be programmed to operate the bypass damper on a timed basis, with the active carbon filter being bypassed in accordance with a pre-programmed schedule. The schedule may be selected to correspond to times of low atmospheric NOx levels, and may be calculated from historical measurement data relating to local and/or national NOx levels. Alternatively, the controller may be arranged to receive data from a remote source indicative of NOx. The remote course may provide real time data indicative of NOx levels, or may provide periodic updates to the operational schedule of the bypass.

Claims (23)

1. A method of ventilating a habitable space within a building, the method comprising:
operating a fan to output air at a positive pressure exceeding atmospheric pressure;
filtering the air output by the fan using an active carbon filter to remove NOx therefrom; and supplying the active carbon filtered air to the habitable space of the building.
2. A method of ventilating a habitable space within a building according to claim 1 wherein the fan is arranged to draw air from outside the building.
3. A method of ventilating a habitable space within a building according to claim 1 or 2 wherein air exits the fan at outlet pressure Pl and exits the active carbon filter at supply pressure P2 which is lower than outlet pressure Pl due to pressure drop across the active carbon filter, and wherein the fan is operated such that the supply pressure P2 is a positive pressure exceeding atmospheric pressure.
4. A method of ventilating a habitable space within a building according to claim 3 comprising boosting the fan speed to overcome the pressure drop across the active carbon filter.
5. A method of ventilating a habitable space within a building according to any preceding claim wherein the fan includes at least one particulate filter arranged to remove particulate matter from the airflow output by the fan.
6. A method of ventilating a habitable space within a building according to claim 5 wherein the fan includes at least one air inlet and the at least one particulate filter is located at the at least one air inlet to filter air as it enters the fan.
7. A method of ventilating a habitable space within a building according to any preceding claim wherein the fan is located within a loft space of the building.
8. A method of ventilating a habitable space according to any preceding claim further comprising selectively bypassing the active carbon filter during periods where operation of the active carbon filter is not desired.
9. A method of ventilating a habitable space according to claim 8 wherein the active carbon filter is bypassed based on external atmospheric conditions.
10. A method of ventilating a habitable space according claim 9 further comprising lowering fan speed when the active carbon filter is bypassed.
11. A method of ventilating a habitable space within a building according to claim 9 or 10 wherein the ventilation system includes a controller configured to operate the bypass and wherein the active carbon filter is bypassed based on data indicative of the external NOx levels being below a predetermined level.
12. A method of ventilating a habitable space within a building according to claim 11 wherein the system includes at least one sensor arranged to generate said data indicative of external NOx levels.
13. A method of ventilating a habitable space within a building according to claim 11 wherein said data comprises historical measurement data.
14. A method of ventilating a habitable space within a building according to claim 11 wherein the data comprises a schedule of operation which defines set times for operation of the active carbon filter
15.
A positive input ventilation system comprising:
a fan configured to output a positive pressure airflow exceeding atmospheric pressure;
a vent for supplying airflow from the fan to a habitable space within a building; and an active carbon filter fluidly connected to the fan and the vent, the active carbon filter being located between the fan and the vent to filter airflow flowing from the fan to the vent.
16. A positive input ventilation system according to claim 15 wherein a supply duct connects the fan and the vent, and wherein the active carbon filter is an in-line filter located along said supply duct.
17. A positive input ventilation system according to claim 15 or 16 further comprising a bypass channel in fluid connection with the fan and the vent and flow control means arranged to selectively divert flow from the active carbon filter to the bypass channel to bypass the active carbon filter, and a controller configured to control operation of the flow control means.
18. A positive input ventilation system according to claim 15 wherein the controller is configured to control the flow control means to the bypass channel to bypass the active carbon filter based on external atmospheric conditions.
19. A positive input ventilation system according to claim 18 wherein said external atmospheric conditions are NOx levels.
20. A positive input ventilation system according to any one of claims 17 to 19 wherein the flow control means is a bypass damper.
21. A positive input ventilation system according to any one of claims 17 to 20 wherein the controller is configured to divert flow to the bypass channel to bypass the active carbon filter based on data indicative of the external NOx levels being below a predetermined level
22. A positive input ventilation system according to claim 21 wherein the system
5 includes at least one sensor arranged to generate said data indicative of external NOx levels.
23. A positive input ventilation system according to any one of claims 17 to 22 wherein said data comprises historical measurement data.
GB1719999.3A 2017-11-30 2017-11-30 A positive input ventilation system with active carbon filter Active GB2569111B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1719999.3A GB2569111B (en) 2017-11-30 2017-11-30 A positive input ventilation system with active carbon filter
EP18782179.8A EP3717836A1 (en) 2017-11-30 2018-10-01 A positive input ventilation system with active carbon filter
PCT/GB2018/052807 WO2019106329A1 (en) 2017-11-30 2018-10-01 A positive input ventilation system with active carbon filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1719999.3A GB2569111B (en) 2017-11-30 2017-11-30 A positive input ventilation system with active carbon filter

Publications (3)

Publication Number Publication Date
GB201719999D0 GB201719999D0 (en) 2018-01-17
GB2569111A true GB2569111A (en) 2019-06-12
GB2569111B GB2569111B (en) 2021-12-29

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GB1719999.3A Active GB2569111B (en) 2017-11-30 2017-11-30 A positive input ventilation system with active carbon filter

Country Status (3)

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EP (1) EP3717836A1 (en)
GB (1) GB2569111B (en)
WO (1) WO2019106329A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4130591A4 (en) * 2020-03-27 2023-04-26 Mitsubishi Electric Corporation Ventilation and air conditioning system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114893845B (en) * 2022-05-06 2024-03-26 浙江阿林斯普能源科技有限公司 New fan

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54152340A (en) * 1978-05-19 1979-11-30 Matsushita Electric Ind Co Ltd Ventilating fan
JPS56133549A (en) * 1980-03-19 1981-10-19 Matsushita Seiko Co Ltd Air purifying heat exchanging type ventilating device
WO1996032180A1 (en) * 1995-04-12 1996-10-17 Curt Lindhe Konsult & Förvaltnings Ab Multiple filter unit
JP2001219022A (en) * 2000-02-07 2001-08-14 Mitsubishi Electric Corp NOx removal filter, method of manufacturing the same, and air conditioner
GB2534178A (en) * 2015-01-15 2016-07-20 Nuaire Ltd An air vent assembly
CN106642489A (en) * 2016-12-22 2017-05-10 中国船舶重工集团公司第七〇九研究所 Bypass-type fresh air purifier
CN206546011U (en) * 2016-12-31 2017-10-10 上海慧鼎信息系统工程有限公司 A kind of smart home air cleaning unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279609A (en) * 1992-10-30 1994-01-18 Milton Meckler Air quality-temperature controlled central conditioner and multi-zone conditioning
US6619063B1 (en) * 2002-03-19 2003-09-16 Anthony Lee Brumett Indoor air treatment system with HEPA filtration
CH708655A1 (en) * 2013-10-01 2015-04-15 Mentus Holding Ag Air purifier with ozone and particulate matter cleaning.
EP3121524A4 (en) * 2014-03-17 2017-11-01 Sui Chun Law Air purification device
CN104697079B (en) * 2015-03-23 2017-04-12 宁波东大空调设备有限公司 Self-control energy-saving haze-removing fresh air device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54152340A (en) * 1978-05-19 1979-11-30 Matsushita Electric Ind Co Ltd Ventilating fan
JPS56133549A (en) * 1980-03-19 1981-10-19 Matsushita Seiko Co Ltd Air purifying heat exchanging type ventilating device
WO1996032180A1 (en) * 1995-04-12 1996-10-17 Curt Lindhe Konsult & Förvaltnings Ab Multiple filter unit
JP2001219022A (en) * 2000-02-07 2001-08-14 Mitsubishi Electric Corp NOx removal filter, method of manufacturing the same, and air conditioner
GB2534178A (en) * 2015-01-15 2016-07-20 Nuaire Ltd An air vent assembly
CN106642489A (en) * 2016-12-22 2017-05-10 中国船舶重工集团公司第七〇九研究所 Bypass-type fresh air purifier
CN206546011U (en) * 2016-12-31 2017-10-10 上海慧鼎信息系统工程有限公司 A kind of smart home air cleaning unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4130591A4 (en) * 2020-03-27 2023-04-26 Mitsubishi Electric Corporation Ventilation and air conditioning system

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