CN114857719A - Apparatus and method for air management of a room - Google Patents
Apparatus and method for air management of a room Download PDFInfo
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- CN114857719A CN114857719A CN202210617581.8A CN202210617581A CN114857719A CN 114857719 A CN114857719 A CN 114857719A CN 202210617581 A CN202210617581 A CN 202210617581A CN 114857719 A CN114857719 A CN 114857719A
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- air quality
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- 238000000034 method Methods 0.000 title description 12
- 238000009423 ventilation Methods 0.000 claims abstract description 118
- 239000000356 contaminant Substances 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 60
- 239000001569 carbon dioxide Substances 0.000 claims description 30
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 30
- 239000003344 environmental pollutant Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 231100000719 pollutant Toxicity 0.000 claims description 11
- 238000005265 energy consumption Methods 0.000 abstract description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 27
- 230000004913 activation Effects 0.000 description 5
- 238000004887 air purification Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- 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
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- 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
- F24F8/80—Self-contained air purifiers
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- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
-
- 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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
-
- 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
- F24F2110/70—Carbon dioxide
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuzzy Systems (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Quality & Reliability (AREA)
- Ventilation (AREA)
- Air Conditioning Control Device (AREA)
Abstract
An apparatus for air management of a room, comprising: a ventilation device for enabling an air exchange between an internal environment of the room and an external environment of the room; a self-contained air purifier disposed separately from the ventilation means and adapted to remove contaminants from the air in the interior environment of the room; and a control system in communication with both the ventilation device and the air purifier, adapted to control operation of the ventilation device and the air purifier in accordance with air quality data relating to an interior environment of the room and an exterior environment of the room, the control system being configured to control the ventilation device and the air purifier differently depending on whether the air quality data relating to the exterior environment of the room is above or below a predetermined reference. The operation of the apparatus is aimed at optimizing indoor air quality and minimizing energy consumption.
Description
The application is a divisional application of patent application with international application numbers of PCT/EP2015/080898, international application dates of 2015, 12 and 22 months, national stage date of 2017, 6 and 26 months, national application numbers of 201580071108.2 and invented name of 'equipment and method for air management of rooms'.
Technical Field
The present invention relates to a device and a method for air management of a room.
Background
Indoor air quality is an important issue that is closely related to human health and comfort. Considering that many people spend most of their time indoors (e.g., more than 90% of the time), indoor air pollution constitutes a significant risk factor for various health issues. In general, the air contaminants may be one or more of particulate contaminants, gaseous contaminants, and microorganisms.
Many buildings are equipped with so-called HVAC systems, i.e. heating, ventilation and air conditioning systems, for providing thermal comfort and acceptable indoor air quality. However, in certain environments, particularly in large cities, outdoor air pollution can be very severe, and it has been found that in such environments, current HVAC systems are not able to adequately filter all particles, where these systems are not very effective, particularly in removing relatively small particles from the incoming air. Furthermore, most HVAC systems are unable to remove various gaseous contaminants such as formaldehyde and other VOCs (volatile organic compounds) from the indoor air because the filters used in these systems are not suitable for doing so. Another disadvantage of HVAC systems is that the system consumes a significant amount of energy, especially when the system is continuously on (which is often the case in practice) to maintain air quality.
In the field of indoor air quality management, in order to remedy the shortcomings of HVAC systems, separate air purifiers have been developed. An example of such an air purifier is known from WO2012/066453a 1. The separate air purifiers, which will be placed in the room, are very useful for people living in highly polluted cities, because they are very helpful in removing various pollutants from the indoor air. The operation of the stand-alone air purifier requires much less power than the operation of the HVAC system. Furthermore, since the fan that is part of the air purifier and used to force air through the air purifier is of sufficient power to enable the application of a high efficiency filter in the air purifier, a stand-alone air purifier is capable of removing both large and small particles from the air. Another advantage of a stand-alone air purifier is that the air purifier can be used to remove indoor gaseous pollutants.
It is generally recommended to keep a room to which a separate air purifier is applied closed so that good air purification efficiency can be achieved. If the individual air purifiers are to be operated in an open room, the indoor air will be difficult to clean by the air purifiers due to too high source intensity. However, operating a stand-alone air purifier in a closed room involves an increase in the level of carbon dioxide in the room in the presence of one or more persons in the room. For example, if there are two people in a 50 cubic meter enclosed room, carbon dioxide will accumulate in the room and the carbon dioxide level rises above 1000ppm in half an hour. Thus, the carbon dioxide level can become very high in a relatively short period of time, wherein it is no longer possible to comply with national and/or global standards, which are typically based on a value of 1000ppm as a threshold.
A separate air purifier is not capable of removing carbon dioxide from the air. Therefore, rooms in which such air purifiers are present need to be ventilated at least from time to time. Generally, ventilation can be achieved by opening windows, assuming the room has windows, but if the outdoor air quality is very poor, this may deteriorate the indoor air quality. It is not possible to leave for the user to determine the correct time to open the window and to determine the appropriate duration of the ventilation action.
It is known from JPH11201511 to provide an air cleaning system comprising a blower for circulating and filtering air in a room and a ventilation device for introducing outside air into the room. When the gas detector detects that the gas level in the room exceeds a prescribed reference range, the ventilation device is activated to introduce outside air into the room.
Disclosure of Invention
The object of the invention is to alleviate the dilemma of the need for good indoor quality on the one hand and ventilation on the other hand. In view of this, according to the present invention, there is provided an apparatus for air management of a room, comprising: a ventilation device for enabling an air exchange between an internal environment of the room and an external environment of the room; a self-contained air purifier disposed separately from the ventilation device and adapted to remove contaminants from the air in the interior environment of the room; and a control system in communication with both the ventilation device and the air purifier, adapted to control operation of the ventilation device and the air purifier in accordance with air quality data relating to an interior environment of the room and an exterior environment of the room, the control system being configured to control the ventilation device and the air purifier differently depending on whether the air quality data relating to the exterior environment of the room is above or below a predetermined reference. Preferably, the control system is adapted to process air quality data relating to the internal environment of the room and the external environment of the room.
In the context of the present invention, the expressions "internal environment" and "indoor" and the like are to be understood as relating to the air present in a room, while the expressions "external environment" and "outdoor" and the like are to be understood as relating to the air present outside the room and which can be admitted into the room by means of the ventilation device, these air being in most cases air from the open air present outside the building of which said room forms a part.
Based on the invention, an optimal operation of the device comprising the ventilation means and the separate air purifier can be achieved, so that the indoor air quality is continuously at the best possible level and the energy consumption can be minimized. Furthermore, the control algorithm forming the basis of the functions of the control system may be selected to take into account, for example, a predetermined threshold value with respect to the carbon dioxide level in the room. Thus, the invention provides a way to avoid the following situation: situations where the carbon dioxide level in the room becomes dangerously high due to long-term operation of the separate air purifier, situations where energy is wasted and situations where air cleaning is only performed at a lower speed.
As mentioned above, the device according to the invention comprises three main components, namely a ventilation means, a separate air purifier and a control system. It is practical that the ventilation device is mounted on a wall of a room or fixed to a window or an air conditioner that may be present in the room. The ventilation means may comprise a bi-directional fan, a set of fans, one for exhausting air from the room and the other for supplying air to the room, an automatically controlled window or any other mechanical structure which may have the function of exchanging air between the interior environment of the room and the exterior environment of the room for exhausting dirty air from the room and introducing fresh air into the room. The main function of a separate air purifier is to clean dirty indoor air. In particular, the air purifier may be adapted to remove at least one of gaseous pollutants and particulate pollutants from indoor air. Ideally, the airflow of at least one of the ventilation device and the air purifier may be regulated.
The control system provides communication between the ventilation means and the air purifier so that the operation of these components of the device according to the invention can be adapted to each other in order to obtain optimum air cleaning results with minimum power consumption. Control of the ventilation and air purifier includes determining when the ventilation and air purifier should be turned on and off, and may also include, for example, setting an airflow rate. In some cases, the control system is adapted to use air quality data relating to at least one of an interior environment of the room and an exterior environment of the room. The air quality data may be collected from suitable sensing devices and/or general data sources, the latter being particularly suitable for air quality data relating to the external environment of the room. In general, the data may be obtained by a data collector, where the data collector may be a sensor located at any suitable location within the room and/or a website data collector. In a practical embodiment of the apparatus according to the invention, a suitable controller located on or near the ventilation means may be applied, wherein the controller is arranged to receive information from sensors for detecting carbon dioxide, particulate matter or gaseous pollutants located on or near the ventilation means, and from a data collector adapted to collect data from an official website regarding the actual outdoor air quality. The communication between the controller and at least one of the ventilation device and the air purifier may be performed wirelessly. In some cases, a suitable controller is one that: it is adapted to follow certain algorithms aimed at achieving operation of the ventilation means and the air purifier so that the indoor air quality is always at the optimum in a given situation, avoiding waste of energy.
For the sake of completeness, it should be noted that the control system is preferably capable of running the program automatically. However, this does not change the fact that the invention also covers situations where the control system can be set by the user, i.e. situations where the device according to the invention comprises a user interface and the user can determine the status of the ventilation means and the air purifier through the user interface-assuming that the user takes no action, but takes into account the actual situation of the air quality, indoor and/or outdoor. In this context, the most practical choice with automatic air management of the room is taken as the starting point.
In the following, various options regarding the control system will be mentioned and elucidated.
First, the control system may be adapted to compare air quality data relating to the internal environment of the room with predetermined reference data. For example, the control system may be adapted to compare the actual level of formaldehyde of the indoor air, which can be detected by a suitable sensor, with a maximum allowable level. Starting from such a comparison, and depending on the results of the comparison, the control system can determine appropriate control of the operation of the ventilation device and the air purifier. If the indoor air quality is found to be equal to or better than acceptable standards, there is no need to operate the ventilation device and the air purifier, so they can be kept in the off mode, thereby enabling energy savings. Thus, it is advantageous that the control system is adapted to set the inactive state of both the ventilating means and the air purifier if the air quality of the interior environment of the room is found to be equal to or better than a predetermined reference. If the indoor air quality is found to be an acceptable standard deviation, then control of the operation of the ventilation device and the air purifier is directed to improving the indoor air quality. Thus, if it is found that the air quality of the interior environment of the room is worse than a predetermined reference, it is advantageous that the control system is adapted to run a program for activating at least one of the ventilation means and the air purifier.
If the air quality of the interior environment of the room is found to be worse than a predetermined reference, it will be practical if the control system is further adapted to compare the air quality data about the exterior environment of the room with predetermined reference data. If the outdoor air quality is good enough, it is no problem to operate either the ventilation device or the air cleaner. However, if the outdoor air quality is poor, it is necessary to find the best solution between two conflicting requirements, namely, having the requirement of cleaning the indoor air and the requirement of preventing the carbon dioxide level of the indoor air from rising to an unacceptable value.
In case it is found that the air quality of the environment outside the room is equal to or better than a predetermined reference, the control system is adapted to alternate the activation state of the ventilation means with the activation state of the air purifier. There is no need to operate the ventilation device and the air purifier at the same time, thereby saving energy. When the air purifier is operated, improvement of indoor air quality can be achieved. When the ventilating means is operated, carbon dioxide accumulated in the room during the operation of the air purifier may be discharged from the room. After allowing the indoor air and the outdoor air to be exchanged through the ventilation means, the air cleaner may be turned on again.
The alternating operation of the ventilating means and the air cleaner may be repeatedly performed. In this process it is useful to make a comparison between the indoor air quality and the outdoor air quality to determine whether it is best to operate the ventilation device or the air purifier. It is therefore advantageous that the control system is adapted to make a comparison between air quality data relating to the interior environment of the room and air quality data relating to the exterior environment of the room to set an active state of the ventilating means and an inactive state of the air purifier in case it is found that the air quality of the exterior environment of the room is better than the air quality of the interior environment of the room, and to set an inactive state of the ventilating means and an active state of the air purifier in case it is found that the air quality of the exterior environment of the room is worse than the air quality of the interior environment of the room.
According to an alternative, the control system may be adapted to run a timer program for controlling the duration of operation of the ventilating means and the air purifier, respectively. In this respect it is advantageous that the device comprises a user interface for enabling a user to provide information to the control system about the room characteristics, wherein the control system is adapted to determine the duration of operation of the ventilating means and the air purifier, respectively, based on said information. In this way, the duration of operation of the ventilation means and the air purifier may be selected to be optimal for the characteristics of the room (including the size of the room and the number of persons present in the room), respectively.
According to another alternative, the device comprises a flow meter for measuring the amount of ventilation air, wherein the control system is adapted to stop the operation of the ventilation means as soon as the amount of ventilation air is found to reach a predetermined reference level. Also in this case it is advantageous that the device comprises a user interface for enabling a user to provide information about the room characteristics to the control system. This information can then be used by the control system to determine a reference level for the amount of ventilation air.
The above-mentioned options regarding the control system relate to the case where a comparison of the outdoor air quality with a predetermined reference indicates that the outdoor quality is equal to or better than said reference. Preferably, the control system is further adapted to set the inactive state of the ventilating means and the active state of the air purifier in case it is found that the air quality of the environment outside the room is worse than a predetermined reference. In this way, situations in which poor quality air is supplied to the room are avoided, while the air purifier is used to improve the indoor air quality. However, in order to prevent the carbon dioxide level in the room from becoming too high, it is advantageous that the device comprises sensing means for sensing the carbon dioxide level in the room, and that the control system is adapted to change the inactive state of the ventilation means to the active state as long as the carbon dioxide level in the room is found to be above a predetermined reference. In this way, the room is ventilated to a minimum extent only sufficient to keep the carbon dioxide level in the room at an acceptable value.
It should be noted that the air quality data relating to the internal environment of the room may comprise at least one of carbon dioxide level data, particle level data and gaseous pollutant level data, and the air quality data relating to the external environment of the room may comprise at least one of particle level data and gaseous pollutant level data. Other types of air quality data are also possible in terms of indoor air quality and/or outdoor air quality. Air quality data relating to the environment outside the room may be obtained based on the detection, but such data may also be retrieved from a general data source such as the internet.
According to an option present within the framework of the invention, the flow rate of at least one of the ventilation means and the air purifier is adjustable, wherein the control system is adapted to set the flow rate of said at least one of the ventilation means and the air purifier. Thus, the way in which the device according to the invention achieves/maintains a good indoor air quality can be further optimized.
The present invention relates to a device for air management of a room and a method for air management of a room. As can be seen from the above, the method may be defined as a method for air management of a room: the room is provided with a ventilation device for enabling air exchange between an interior environment of the room and an exterior environment of the room, and a separate air purifier arranged separately from the ventilation device and adapted to remove contaminants from air in the interior environment of the room, wherein operation of the ventilation device and the air purifier is controlled in accordance with air quality data relating to the interior environment of the room and the exterior environment of the room, wherein the ventilation device and the air purifier are controlled differently depending on whether the air quality data relating to the exterior environment of the room is above or below a predetermined reference.
In accordance with the options described above in relation to the device according to the invention, the following options apply to the method according to the invention, wherein it should be noted that these options are listed in a logical order which more or less reflects the successive control steps:
-comparing air quality data relating to the internal environment of the room with predetermined reference data;
-setting an inactive state of the ventilation means and the air purifier in case it is found that the air quality of the interior environment of the room is equal to or better than a predetermined reference;
-running a program for activating at least one of a ventilation device and an air purifier in case it is found that the air quality of the interior environment of the room is worse than a predetermined reference;
-comparing air quality data relating to the environment outside the room with predetermined reference data;
-alternating the activation state of the ventilation means with the activation state of the air purifier in case it is found that the air quality of the outside environment of the room is equal to or better than a predetermined reference;
-comparing between air quality data relating to the internal environment of the room and air quality data relating to the external environment of the room, setting an active state of the air ventilating means and an inactive state of the air purifier in case it is found that the air quality of the external environment of the room is better than the air quality of the internal environment of the room, and setting an inactive state of the air ventilating means and an active state of the air purifier in case it is found that the air quality of the external environment of the room is worse than the air quality of the internal environment of the room;
-in case it is found that the air quality of the environment outside the room is worse than a predetermined reference, setting the inactive state of the ventilation means and the active state of the air purifier; and-applying sensing means for sensing the carbon dioxide level in the room and changing the inactive state of the ventilation means to the active state as long as the carbon dioxide level in the room is found to be above a predetermined reference.
The following options mentioned in connection with the device according to the invention also apply to the method according to the invention:
-running a timer program for controlling the duration of operation of the ventilating means and the air purifier, respectively;
-determining the duration of operation of the ventilation means and the air purifier, respectively, based on information provided by the user;
-applying a flow meter for measuring the amount of ventilation air and stopping the operation of the ventilation device once it is found that the amount of ventilation air has reached a predetermined reference level;
-the air quality data relating to the internal environment of the room comprises at least one of carbon dioxide level data, particle level data and gaseous pollutant level data, and the air quality data relating to the external environment of the room comprises at least one of particle level data and gaseous pollutant level data;
-retrieving air quality data relating to the external environment of the room from a general data source; and
-setting the flow rate of at least one of the ventilation device and the air purifier, provided that the flow rate of the at least one of the ventilation device and the air purifier is adjustable.
The above and other aspects of the invention will become apparent from and elucidated with reference to the following detailed description of a room equipped with a device for air management of the room, comprising a ventilator, a separate air purifier and a control system, and various options regarding the control of the operation of the ventilator and the air purifier.
Drawings
The invention will now be explained in more detail with reference to the drawings, in which:
fig. 1 schematically shows a room equipped with a device for air management of the room, the device comprising a ventilation means, a separate air purifier and a control system;
FIG. 2 is a flow chart of a manner of controlling operation of the ventilation device and the air purifier in a situation where the outside air quality is good; and
fig. 3 is a flow chart of a manner suitable for controlling the operation of the ventilation device and the air purifier in the case of poor outside air quality.
Detailed Description
Fig. 1 schematically shows a room 100 equipped with a device 1 for air management of the room 100, which device 1 comprises a ventilation arrangement 10, a separate air purifier 20 and a control system 30. The air purifier 20 is located at a suitable location within the room 100 and can be easily replaced by a user to another location in the room 100 if desired. In the example shown, the ventilation device 10 is mounted on a wall 101 of the room 100 and is a bi-directional fan for exhausting dirty air from an internal environment 102 of the room 100 to an external environment 103 of the room 100 and supplying fresh air from the external environment 103 of the room 100 to the internal environment 102 of the room 100. The air exchange is schematically depicted in fig. 1 by a set of two opposite arrows.
The air purifier 20 is used to clean dirty air from the interior environment 102 of the room 100. Further, the air purifier 20 includes a fan (not shown) for forcing air to be purified to flow through the air purifier 20 during operation of the air purifier 20. The air flow into and out of the air purifier 20 is schematically depicted by curved arrows in fig. 1. In the example shown, the air purifier 20 is capable of receiving and transmitting data, particularly data regarding operational characteristics, in a wireless manner. Wireless communication between the air purifier 20 and the control system 30 is schematically depicted by the dashed double-headed arrow in fig. 1.
The control system 30 is adapted to run a control program aimed at giving the best possible quality of air, and in some cases meeting certain criteria, in the internal environment 102 of the room 100. In the example shown, the control system 30 includes a controller 31 and a data collector 32, the data collector 32 may be a sensor capable of providing real-time indoor air quality data and/or software that can download daily outdoor air quality data from an official website. For example, the sensor may be a carbon dioxide sensor, a particle sensor, or a gaseous contaminant sensor. The control program is used to turn the ventilation device 10 and the air purifier 20 on and off at appropriate times, taking into account the air quality data obtained from the data collector 32. The controller 31 and data collector 32 may be integrated into the ventilation device 10 as shown in fig. 1, but other locations of the controller 31 and data collector 32 are possible, including locations on the air purifier 20.
Fig. 2 and 3 show possible aspects of the control procedure, where fig. 2 relates to an algorithm applicable in case of good outdoor air quality and fig. 3 relates to an algorithm applicable in case of poor outdoor air quality. In short, when the outdoor air quality is good, the ventilation device 10 and the air cleaner 20 are alternately operated, and when the outdoor air quality is poor, the ventilation device 10 and the air cleaner 20 are simultaneously operated for a few minutes at first, and then only the air cleaner 20 is operated to place the indoor air quality at an acceptable level.
In the following, various options regarding the device 1 for air management of a room 100 will be described. It is noted that within the framework of the invention a combination of these options is possible.
According to a first option, the device 1 is a sensor-assisted device. The sensor may be placed at the ventilation device 10, at the air purifier 20 or at another suitable location in the room 100 for performing a timely measurement of the indoor air quality. The ventilation device 10 and the air purifier 20 will operate alternately according to the sensor data. Both gas sensors and particle sensors may be used. In the following, as an example, it will be assumed that the device 1 for air management of a room 100 comprises a formaldehyde sensor and a carbon dioxide sensor.
The formaldehyde sensor is mounted on the air purifier 20. When the formaldehyde concentration is found to be twice or three times the reference value (e.g., national standard), the air cleaner 20 is turned on and the ventilation device 10 is maintained in the inactive state. After the air purifier 20 has been in operation for a period of time, the formaldehyde sensor will collect new data. If the formaldehyde concentration is found to be below the reference value, the air purifier 20 will be placed in an inactive state and the ventilation device 10 will be placed in an active state for about three minutes in order to supply fresh air from the environment 103 outside the room 100 to the environment 102 inside the room 100. When it is found that the formaldehyde concentration is much higher than the reference value (for example four/five times the reference value), the ventilation device 10 is opened for ten minutes, including five minutes of air exhaustion from the internal environment 102 of the room 100 to the external environment 103 of the room 100, and then five minutes of supply of fresh air from the external environment 103 of the room 100 to the internal environment 102 of the room 100. When the operation of the ventilation device 10 is stopped, the sensor data is interpreted, and the air purifier 20 is turned on to reduce the formaldehyde concentration. After the air purifier 20 has been in operation for a certain period of time, for example, half an hour to one hour, the operation of the air purifier 20 is stopped and the ventilation device is restarted for 10 minutes. The operation time of the ventilating device 10 and the air cleaner 20 can be adjusted according to the indoor air quality and the outdoor air quality.
A carbon dioxide sensor may be mounted on the ventilation device 10 for indicating the operation time of the ventilation device 10 and the air purifier 20. When the carbon dioxide sensor detects a carbon dioxide level above a predetermined reference value, for example a value of 1600ppm when the air purifier 20 is in the active state, the operation of the air purifier 20 is stopped and the ventilating device 10 is put in the active state for an air exchange for a few minutes until the carbon dioxide level is at a lower value, for example a value of 500 ppm. The ventilation device 10 remains in the inactive state as long as the carbon dioxide level measurement in the interior environment 102 of the room 100 is below 1600ppm when the air purifier 20 is in the active state.
According to a second option, the device 1 for air management of the room 100 is a big data assistant. Information about the quality of the outdoor air can be obtained by suitable data collectors from official websites in some places where the internet is accessible. In this case, the data collector may be installed on one of the ventilation device 10, the air purifier 20, and the control system 30, or installed at another appropriate location in the room 100. If the outdoor quality is poor, the ventilation device 10 will remain in the inactive state and the air purifier 20 will remain in the active state. After the air purifier 20 has been in operation for a certain period of time, such as 1 hour or 2 hours, the ventilation device 10 will be placed in an active state for several minutes in order to maintain the carbon dioxide concentration at an acceptable level. Subsequently, ventilation will cease and the air purifier 20 will remain in an activated state. If the outdoor air quality is good, the ventilation device 10 will also start air exchange without the air purifier 20 being in the activated state.
According to a third option, the device 1 for air management of a room 100 is a timer assisted device, wherein a timer program is used to control the duration of ventilation and air purification. In particular, a timer program may be used to set the time intervals at which ventilation and air purification are alternated. For example, ventilation may be performed within five minutes, each ventilation occurring after one hour of air purification. A predetermined relationship may be used to determine how long the duration of ventilation and air purification is appropriate for a particular size of the room 100 and a particular number of people present in the room 100. After the ventilation device 10 has been running for a certain time, which is appropriate for the size of the room and the number of people present in the room 100, the ventilation device 10 will be placed in an inactive state and the air purifier 20 will automatically turn on. After a certain time, the air purifier 20 will be switched off and the ventilation means 10 will be switched on again, which is advantageous for reducing the carbon dioxide level in the room 100, which during this time becomes higher and higher due to the presence of people in the room 100 and the room 100 remaining closed.
According to a fourth option, the device 1 for air management of the room 100 is a flow meter aid. The flow meter may be used to measure the amount of ventilation air and to assist the control system 30 in determining the time interval for alternately operating the ventilation device 10 and the air purifier 20. After one hour of continued activation of the air purifier 20 while the room 100 is closed, the ventilation device 10 will be placed in an active state to reduce the carbon dioxide level to an acceptable value. The flow meter on the ventilation device 10 is used to determine when ventilation can be stopped while the flow rate is adjustable according to the room size. Generally, it will be practical and sufficient to exchange air in the internal environment 102 of the room 100 with air from the external environment 103 of the room 100 once per hour.
It will be clear to a person skilled in the art that the scope of the present invention is not limited to the examples discussed in the foregoing, but that several amendments and modifications thereof are possible without deviating from the scope of the present invention as defined in the attached claims. While the invention has been illustrated and described in detail in the drawings and the description, such illustration and description are to be considered illustrative or exemplary only, and not restrictive. The invention is not limited to the disclosed embodiments.
Variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other steps or elements, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. For example, the flow rate of at least one of the ventilation means and the air purifier may be adjustable, wherein the control system is adapted to set the flow rate of said at least one of the ventilation means and the air purifier not only for applying the main concept of the invention as reflected in claim 1, but also very well in combination with one or more further aspects of the invention. Any reference signs in the claims shall not be construed as limiting the scope of the invention.
Claims (10)
1. A device (1) for air management of a room (100), comprising:
-a ventilation device (10) configured to enable an air exchange between an internal environment (102) of the room (100) and an external environment (103) of the room (100);
-an air purifier (20), the air purifier (20) being arranged separately from the ventilation arrangement (10) and being configured to remove contaminants from air in the interior environment (102) of the room (100); and
-a control system (30, 31, 32) in communication with both the ventilation arrangement (10) and the air purifier (20) and configured to:
receiving air quality data relating to an internal environment (102) of the room (100) and an external environment (103) of the room (100), wherein the air quality data of the internal environment of the room comprises at least one of carbon dioxide level data, particle level data, and gaseous pollutant level data, and wherein the air quality data of the external environment of the room comprises at least one of particle level data and gaseous pollutant level data;
-setting both the ventilation device (10) and the air purifier (20) in an inactive state when the air quality of the internal environment (102) of the room (100) is equal to or higher than a first predetermined reference;
-setting the ventilation device (10) in an active state and the air purifier (20) in an inactive state when the air quality of the internal environment (102) of the room (100) is lower than the first predetermined reference and the air quality of the external environment (103) of the room (100) is better than the air quality of the internal environment (102) of the room (100);
-setting both the ventilation device (10) and the air purifier (20) in an active state when the air quality of the internal environment (102) of the room (100) is below the first predetermined reference and the air quality of the external environment (102) of the room (100) is below a second predetermined reference.
2. The device (1) according to claim 1, wherein the control system (30, 31, 32) is further configured to:
-setting the ventilation device (10) in an inactive state and the air purifier (20) in an active state in case the air quality of the external environment (103) of the room (100) is worse than the air quality of the internal environment (102) of the room (100).
3. The device (1) according to claim 1, wherein the control system (30, 31, 32) is further configured to:
-alternately setting the ventilation device (10) and the air purifier (20) in an active state when the air quality of the external environment (103) of the room (100) is equal to or better than the second predetermined reference.
4. The device (1) according to claim 1, wherein the control system (30, 31, 32) is further configured to:
-when the air quality of the internal environment (102) of the room (100) is below the first predetermined reference and the air quality of the external environment (102) of the room (100) is below a second predetermined reference, first setting both the ventilation device (10) and the air purifier (20) in an active state during a first period of time, then setting the ventilation device (10) in an inactive state and the air purifier (20) in an active state during a second period of time.
5. The device (1) according to claim 1, wherein the device (1) further comprises a flow meter configured for measuring the ventilation air amount of the ventilation means (10).
6. Device (1) according to claim 5, wherein the control system (30, 31, 32) is configured to control the duration of operation of the ventilation means (10) and the air purifier (20) by means of the measured ventilation air amount.
7. The device (1) according to claim 1, wherein the device (1) further comprises a user interface for enabling a user to provide information to the control system (30, 31, 32) about characteristics of the room (100), wherein the control system (30, 31, 32) is further configured to determine an operating duration of the ventilation arrangement (10) and the air purifier (20), respectively, based on the information.
8. The apparatus (1) according to claim 5, wherein the control system (30, 31, 32) is further configured to stop the operation of the ventilation device (10) when the ventilation air amount reaches a predetermined reference level.
9. Device (1) according to claim 1, wherein the device (1) further comprises sensing means (32) for sensing the level of carbon dioxide in the room.
10. The device (1) according to claim 1, wherein the control system (30, 31, 32) is further configured to retrieve air quality data related to the environment (103) outside the room (100) from a general data source.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
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| CN2014094817 | 2014-12-24 | ||
| CNPCT/CN2014/094817 | 2014-12-24 | ||
| EP15151151.6 | 2015-01-14 | ||
| EP15151151 | 2015-01-14 | ||
| CN201580071108.2A CN107110531A (en) | 2014-12-24 | 2015-12-22 | Apparatus and method for the air administrative in room |
| PCT/EP2015/080898 WO2016102521A1 (en) | 2014-12-24 | 2015-12-22 | Arrangement and method for air management of a room |
Related Parent Applications (1)
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|---|---|---|---|
| CN201580071108.2A Division CN107110531A (en) | 2014-12-24 | 2015-12-22 | Apparatus and method for the air administrative in room |
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| CN114857719A true CN114857719A (en) | 2022-08-05 |
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| CN202210617581.8A Pending CN114857719A (en) | 2014-12-24 | 2015-12-22 | Apparatus and method for air management of a room |
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| CN201580071108.2A Pending CN107110531A (en) | 2014-12-24 | 2015-12-22 | Apparatus and method for the air administrative in room |
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Also Published As
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|---|---|
| PL3237808T3 (en) | 2019-02-28 |
| BR112017013402A2 (en) | 2018-03-27 |
| CN107110531A (en) | 2017-08-29 |
| EP3237808B1 (en) | 2018-09-26 |
| US20170350611A1 (en) | 2017-12-07 |
| RU2679989C2 (en) | 2019-02-14 |
| RU2017125832A (en) | 2019-01-24 |
| MX2017008228A (en) | 2017-10-06 |
| EP3237808A1 (en) | 2017-11-01 |
| WO2016102521A1 (en) | 2016-06-30 |
| RU2017125832A3 (en) | 2019-01-24 |
| JP2018501459A (en) | 2018-01-18 |
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