WO2015140776A1

WO2015140776A1 - Smart, personal air purification device

Info

Publication number: WO2015140776A1
Application number: PCT/IL2015/000015
Authority: WO
Inventors: Sarah TULIN; Tal AZOURI; Nahum Cohen
Original assignee: Oxie Innovations Inc.
Priority date: 2014-03-18
Filing date: 2015-03-18
Publication date: 2015-09-24

Abstract

Air purification device comprising: at least one inlet, continuous airflow mechanism configured to draw environmental air through the inlet, air purification components configured to be in fluid communication with the continuous airflow mechanism and at least one outlet towards a user. Such air purification device is suitable for various applications, including wearable applications intended to generate local purified air in vicinity of a user airways.

Description

iSmart. Personal Air Purification Device

Technical Field

The present invention pertains to air purification devices, and in particular to air purification devices customized for personal use in the vicinity of a user.

Background

Air pollution is the introduction of particulates, biological molecules, or other harmful materials into the Earth's atmosphere, causing disease and death to humans. Indoor air pollution and urban air quality are listed as two of the world's worst toxic pollution problems in the 2008 Blacksmith Institute World's Worst Polluted Places

report. According to the 2014 WHO report, air pollution in 2012 caused the deaths of around 7 million people worldwide. Air pollutants are substances in the air that can have adverse effects on humans. Solid particles, liquid droplets or gases are included within the definition of such pollutants. Primary pollutants are usually produced from a process, such as ash from a volcanic eruption, carbon monoxide gas from motor vehicle exhaust, or the sulfur dioxide released from factories. Secondary pollutants form in the air when primary pollutants react or interact. See ground level ozone as prominent example of a secondary pollutant. Some pollutants may be both primary and secondary: they are both emitted directly and formed from other primary pollutants.

Different devices are currently offered that provide partial solutions for cleaning air from different types of pollutants. Such devices are either dedicated to particular use, too large to be adapted for other uses or selective in purifying air from a particular substance. Further, no personal multi-pollutant air purifier is currently offered or suggested.

It is, therefore, an object of the present invention to provide means and method for multi- pollutant air purification. It is yet another object of the present invention to provide means and method for multi- pollutant air purification for wearable use.

It is yet another object of the present invention to provide means and methods for multi- pollutant air purification that generate locally distributed purified air in the vicinity of a user.

It is yet another object of the present invention to provide means and methods for multi- pollutant air purification that generate locally air distributed ions in the vicinity of a user.

It is yet another object of the present invention to provide means and methods for multi- pollutant air purification that is wirelessly controllable and communicable.

This and other means and methods of the present invention shall become apparent as the description proceeds.

Summary

In one aspect, the present invention pertains to air purification devices, particularly customized for personal use. In particular, a customized air purification device may be a wearable device.

In particular non-limiting embodiments, the air purification device may be wearable around a user's neck, on his or her head or any combination thereof. Other options of wearing the device that streams purified air to a users body, in particular to air exchanging organs, may be contemplated within the scope of the present invention.

In another particular embodiment, the device may be suitable for human use of all ages and cover a variety of different applications for use indoors or outdoors. In another aspect, the main device comprises three core technologies for air purification that include: negative ionizers, passive filters and active carbon filters. In one particular embodiment, the passive filter is a HEPA filter. In another particular embodiment, the passive filter is an electrostatic filter. These types of filters, however, do not limit the types of filters and any passive filter is contemplated to be suitable for the air purification device of the present invention.

In still another aspect, the main device is used as the core technology for other applicable uses. For example, the air purification device may be smart, namely in communication with data processing, electronic command and remote control means that provide information required for modulating air purification and functionalities for controlling and adjusting the device for personal use according to surrounding conditions.

In one particular embodiment, the core technology of the device is used in varying applications and implemented in a variety of products to cover all potential bad air quality scenarios. Some of these applications include but are not limited to: childcare, paramedical, motorcycle and bike helmet uses, an application for sports performance, automobile users, and more. Accordingly, the varying devices comprise attachable parts that use the core technology, such as attachable masks and clip on devices.

In still another particular embodiment, the device may be charged using a rechargeable battery. In one particular non-hmiting embodiment, the rechargeable battery is a lithium ion battery. Other electric and electronic components of the device comprise an on/off switch, sensors and wireless communication protocol. Particular, non-limiting examples of such protocol are Bluetooth, WiFi and any other protocol using RF signal technology that communicate between the electronic module of the device and other smart devices. In still another particular embodiment, smart devices compatible for communicating with the electronic module of the device of the air purification system of the present invention are selected from smartphones, watches, augmented reality glasses, smart homes, a dedicated external controller and any other equipment to and from which the system communicates information.

In one embodiment, the sensors in the device comprise but are not limited to: mems (Macro Electro Mechanical Systems) air pollution sensors and metal oxide air pollution sensors. In particular, the air pollution sensors are configured to sense different types of air pollutants. Particular non-limiting types of air pollutants are PM2.5, PM10 (PM =

Particulate Matter, which is a mixture of solid particles and liquid droplets found in air with size distribution around 2.5 μηι and 10 μηι), Ozone, N0₂, CO, S0₂, PB, pollen, NH₃, benzene, and volatile organic compounds The sensors on the device are applicable to the different usable applications detailed above. These sensors are configured to detect the air quality in real-time in any given environment. Accordingly, in one particular embodiment, the sensors provide

information to users when the filters need to be replaced. Similarly, in still another particular embodiment, indications may signal when a battery needs to be charged or replaced. In one embodiment, the sensors and indicators communicate via wireless communication protocol. Particular, non-limiting examples of such protocol are

Bluetooth, WiFi and any other protocol using RF signal technology that communicates with a smart device with a software element installed within that allows users to perform a variety of functions. Non-limiting examples of such functions are: tracking the air quality in a user's surroundings, searching routes with the best air quality, sharing air quality information with other users of the air purification system, learning more about air quality and ordering new filters.

In one particular embodiment, the air outlets of the device may be pointed towards the face of a user enabling purified air to reach the air exchanging organs. In one particular embodiment the air exchanging organs are the mouth and nose areas, thus allowing the user to breathe in purified air.

In one particular embodiment, a gap exists between the outlets of the air purification device and user's airways, for example mouth and nose. In still another particular embodiment, the air purification device of the present invention may be designed to overcome environmental conditions, for example wind and pollution, to deliver improved air quality at the user airways. In still another particular embodiment, the air purification device comprises smell cartridges configured to perfume the purified air exiting the outlets of the device

Brief Description of the Drawings

Figs. 1A-1B demonstrate use of personal air purification device of the present invention. Figs. 2A-2B display personal neck- worn air purification device of the present invention. Fig. 3 schematically illustrate air purification with a neck- worn air purification device of the present invention.

Figs. 4A-4C schematically illustrate the different modules of an air purification device of the present invention.

Fig. 5 schematically illustrate particular modules of an air purification device of the present invention.

Fig. 6 illustrate particular scenarios of applying air purification device of the present invention.

Fig. 7 is a screenshot of smart communication device communicating with air purification device of the present invention.

Fig. 8 schematically illustrates a communication module used to communicate with an air purification device of the present invention.

Figs. 9A-9D illustrate incorporation of air purification device of the present invention into particular accessories. Fig. lOA-lOC illustrate weight and volume distributions of device modules that affect design, usability, functionality and other attributes of the air purification device of the present invention.

Fig. 11A-11K display schematic configurations of modules of air purification device of the present invention.

Detailed Description of the Drawings

The following describes non-limiting examples of the present invention in relation to the accompanying drawings.

In the detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that these are specific embodiments and that the present invention may be practiced also in different ways that embody the characterizing features of the invention as described and claimed herein.

Basic components of the device

The following describes in more particular detail specifics of the different parts of the air purification device of the present invention. It should be noted that various modifications may be made to these parts without altering their basic functionalities and/or departing from the scope and spirit of the present invention.

Fig. 1 demonstrates use of neck-worn air purification device (1) having U-shaped body (3) and two outlets (2a), (2b). The outlets (2a), (2b) face up, streaming purified air towards the wearer airways, thereby generating a local environment in the vicinity of the wearer, that is cleaner relative to the more polluted surrounding.

Figs. 2A-2B display top perspective views of the neck-worn air purification device (1), showing the two outlets (2a), (2b) and the U-shaped body (3). Fig. 2C is a rear view of the device (1), displaying the inlets (4) in the back, through which surrounding air enters the body (3), processed and expelled as purified air through the outlets (2a), (2b).

The components of air purification device according to the present invention, including the neck-worn device (1), are detailed below and schematically illustrated in Figs. 4A and 4C.

Fig. 3 schematically demonstrates the physics of air flow generated by the air purification unit (1) of the present invention. Wind and pollution surrounding a user, wearing air purification device (1), hit the user airways head on or from other directions. The device (1) absorbs the polluted air, processes it and outputs purified air through outlets (2a, 2b) aiming at the user airways. This way, the user creates protected zone around the his head that drives off incoming, polluted air, shields the user from the polluted air and constantly purifies any incoming air entering the device (1). The particular technical features of the air purification device are detailed below:

Inlet (4a, 4b) - Unfiltered air enters the device through at least one inlet. The inlet(s) may be placed on different parts of the device. A particular configuration of inlets in an air purification device of the present invention is illustrated, for example, in Fig. 4C: In particular non-limiting embodiments, the air may enter the device in passive (elements 11a, lib) or active modes (elements 7a, 7b), namely passively by natural flow of surrounding air based on balancing pressure principle, or actively using suction, blowing, or pumping modes.

Components and functionalities of the device as schematically illustrated in Fig. 4A: Electronic Module

• Power management

• Blower control

• Wireless communication

• Air quality monitoring Battery

• Powering blowers and sensors

Air Inlet

Blower(s)

· Drive the intake of air at desired flow-rate

• Overcome filter pressure drop

• Drive air-flow to user airways

Active & Passive Filter

• Filter air of desired particulates

· Achieve required purification by considering environmental mixing

Ionizer

• Negatively charge the air's ions so that floating dust particles will clump together Air Outlet

• Purified air directed to reduce mixing with surrounding air due to wind,

environmental air pollution, and other factors

User Airways

• Air more purified than surrounding environment

Continuous airflow mechanism - This mechanism functions to draw air from the environment through the inlet (elements 4a, 4b) of the device, past the elements required for air purification and out through the outlets (elements 2a, 2b) towards the user. The following describes non-limiting embodiments of the structural and functional characteristics of the airflow mechanism. 1. The airflow mechanism may be push or pull depending on its placement within the air purification configuration. This may benefit or suit compromises of the desired configurations. A push mechanism seems energetically preferable using blowers (9a, 9b). However a pull mechanism may better suit design constraints of the device, also using blowers (9a, 9b). An alternative mechanism may use multiple blowers before and after the filtration mechanism (see components 7a, 7b, 11a, lib for active and passive filters) for a push-pull setup. This can have multiple advantages, including an increase in static pressure. Multiple counter rotating fans (5a, 5b) may also present benefits over a single fan setup for each filtration.

The airflow and pressure aided by the mechanism, namely blowers (9a, 9b), is sufficient to overcome the resistance of the system (produced by internal components of the device, etc.), and to deliver a required amount of airflow to the user, depending on the application e.g. stroller, helmet and an addition to air-conditioning systems within a vehicle. Further still, blowers (9a, 9b) may also be designed to overcome environmental conditions such as wind, humidity and environmental mixing that may be associated with an open or closed environment.

In one particular embodiment, the airflow mechanism, represented by blowers (9a, 9b), is continuous. As the device may be used in motion, bursts or constant flows of air are provided from outside, thus enabling an ongoing flow of purified air to the user.

In one particular example, devices such as fans (5a, 5b) fulfill the requirement of continuous unfiltered and purified airflow through the air purification device, for example the neck- worn device (1). In one particular aspect, pressure increase is required to overcome system resistance, which in turn is also likely to require the use of a blower (e.g., centrifugal blower, cross flow, or other represented by blowers 9a, 9b in Figs. 4A and 4C), which provides a greater increase in pressure along with the required airflow.

In another embodiment of the present invention, an impeller, represented by the fan (5a, 5b) components in Fig. 4C, may be used by the airflow mechanism that may be designed to the particular system requirements. This will increase efficiency of the device in providing the required airflow and pressure whilst minimizing power consumption and/or reducing the size of dimensional distribution of the device. In still another embodiment, the airflow mechanism is powered by an electric motor, see components 6 and 10 in Figs. 4A, 4C. The motor may be integral to the blower (9a, 9b) or airflow producing mechanism. It may also be housed externally to the airflow producing mechanism (i.e. impeller or other). The airflow mechanism

(impeller or other), generally components (5a, 5b), may be linked directly to the shaft of the electric motor (6, 10). Alternatively, the airflow mechanism can be belt driven, or employ another method.

In still another embodiment, an exception to the continuous airflow of the device may be granted by the use of a smart controller, see Fig. 7. This would switch the airflow on and off to cycle with the user' s inhalation and exhalation such that air is provided according to need.

The airflow speed might also vary by adjusting motor speed. This would be done to conserve power in low need conditions, for example, where air quality is better, which does not require intensive purification. Accordingly, the expected lifetime of the entire air purification device will be longer.

Alternatively, in a device configuration that contains multiple airflow mechanisms, namely blowers (5a, 5b), one or more of the airflow mechanisms may switch on or off independently, in order to modulate overall device output airflow and pressure.

The airflow mechanism can also be switched on and off to deliver purified air according to the air pollutants in the user' s environment. Namely, intensity, walking or wind speed and other factors of air purification process in the device are made adjustable according to the type and concentration of different pollutants in any given environment. This will be determined by sensors housed in the device controller, or based on air pollution information pertaining to the user's location, extracted from an online database. In one particular embodiment, the processing of this information to switch the device on and off is processed by the controller of the device itself, which is installed in the electronic module (6) of the device (1). In still another embodiment, such processing of information is done by a linked smartphone (see, for example, Fig. 7 in the present application).

10. Some configurations may use/redirect passive airflow (e.g. wind speed,

environmental air flow) to support or in lieu of active (motorized) airflow. Particular examples are illustrated in Figs. 9A-9D for helmet (20), stroller (30) and headphones (40). The incorporation of the device in a helmet (20) is illustrated in further detail in Fig. 9A, showing how neck-worn device (1) is contacted with the helmet (20) in such orientation that exposes the device inlets (4a, 4b in Fig. 4A) to the surrounding environment and direct the outlets (2a, 2b in Fig. 4A) within the helmet (20) and towards the user airways (See Fig. 9B) providing purified air inside the helmet. The same principle applies to the stroller in Fig. 9C, where the device (1) is installed in front of the child's head and airways in such orientation that the inlets (4a, 4b) (not shown in Fig. 9C. See Figs. 4A, 4b for this matter) are orientated away from the stroller for drawing air from the surrounding. The outlets (2a, 2b) on the other hand are directed towards the child face streaming purified air to his airways. For the headphones (40) outlets positioned such that purified air is directed to the face when worn, and also when rested around neck. The following details non-limiting examples of specific types and qualities of filters (7a, 7b, 11a, lib) incorporated into the air purification device of the present invention and as illustrated in throughout in the Figures:

Air Pollutant Reduction Mechanism - The purpose of this functionality in the air purification device of the present invention is to remove air particulates contributing to indoor and outdoor air pollution. Possible particulate pollutants are listed below in an incomplete list:

• Carbon Monoxide

• Lead

• Nitrogen Dioxide

· Ozone • Sulfur Dioxide

• PM2.5, PM10

• VOCs (Formaldehyde, Benzene, Ethylene glycol, Acetone, NH3).

• Smoke (cigarette & other).

· Viruses, Bacteria

• Dust

• Pollen

• Mold Spores

• Odors

· Toxic Fumes

• Gases

• Dust Mites

• Other particles for example coal by-product. In one aspect, the air pollutant filtration mechanism uses single or a combination of mediums comprising and not limited to HEPA or other passive Filters, Active Carbon Filters, washable filters, membrane filters, nanospun filters, non-woven filters, washable filters and any other filtration mediums configured to remove particulates, particulates, or other pollutants of different particle sizes and properties. Washable filters have the advantage of a long lifespan that can be renewed by washing or other processing of the filter. Further, washable filters have higher pressure drop, but are balanced by using newer technologies of washable filters. In one embodiment, a pre-filter is added that is aimed to increase the life of the other filters by removing larger particles that would clog the system. In still another particular embodiment, all these filter cartridges are replaceable.

In addition to the particulate filters, other types of filters including ionization components (8a, 8b) may be used in the device for further purification of incoming air. The following details particular non-limiting qualities of ionizers used in the device of the present invention and illustrated throughout the accompanying Figures as well as other types of filters contemplated within the scope of the present invention.

1.1 Additionally the device may use other methods to aid in the filtration process

and/or remove particulates from the user's breathing environment. Such methods comprise Negative air ionization (8a, 8b), Electrostatic air filtration, micro plasma discharge, or other methods solely or in combination with each other or with any other air improvement method known in the art.

1.2 In still another embodiment, A UV air purifier or photocatalytic oxidation

mechanism is implemented to improve the quality of the purified air.

In one particular configuration of the device of the present invention, the HEPA filter and Active Carbon filter are packaged as separate filters. Alternatively, they are packaged as a single filter cartridge that combines the air filtration properties of both. Different combinations of filters are also contemplated within the scope of the present invention. These filters are replaceable within the device.

2.1 The HEPA filter and active carbon filters function to remove different sized

particles from the air. HEPA removes larger particulates, whilst the activated carbon is capable of adsorbing smaller particles including toxic chemical gases, some viruses, bacteria and more.

Different combinations or choices of filter mediums may be designed to be particularly efficient in removing selections of pollutants. One example may be for health conditions that are commonly triggered by particular pollutants. Asthma, for instance, may be triggered by particulate matter such as pet dander, or pollen, more than by gaseous matter. Accordingly, a doctor, or consumer may select a filter suited to a particular trigger to symptoms of their ailment. Alternatively, a filter may be designed for a particular environment. For example, the akin Beijing may be different from that in Los Angeles. Accordingly, a filter may be designed to remove the particulates found in a particular city. Using a filter designed for a particular quality and composure of air can increase efficiency of the device, affecting design, and usability.

3. In one particular embodiment, the activated carbon filters are treated in different ways before use to improve their ability to filter different air pollutants. Different combinations of active carbons may also be integrated into the filter, to the same effect. One particular example may be for health conditions that are commonly triggered by particular pollutants. Asthma, for instance, may be triggered by particulate matter such as pet dander, or pollen, more than by gaseous matter.

Accordingly, a doctor, or consumer may select a filter suited to a particular trigger to symptoms of their ailment.

4. The device may use proprietary filters. These may be produced to fit the size

constraints of the device as well as reduce air leakage, promote efficient removal of particulates, promote longer use time, ensure optimal resistance (reducing power wastage) and fit other requirements from the device.

5. In one particular embodiment, the device of the present invention described herein offers consumers a range of filters with different filtration ratings, since different filters suit different air pollution conditions. Such filtration ratings may follow ratings assigned ratings assigned for respirator masks (e.g. FFP1, FFP2, FFP3, N95) indicative of their ability to remove a number of particulates (such as dust, mold, bacteria, viruses and other particulates categorized by their size). In still another particular embodiment, replaceable filters installed within the device are lighter rated filters that typically offer less resistance, require less pressure from the airflow mechanism and can promote a longer battery life for device function. Another functionality of the device is to determine the rating of installed filters using an electronic sensor, mechanical sensor or switch. One possible mechanism of testing the filter might be to test pressure resistance across the filter given a set airflow, pressure and blow interval from the airflow mechanism. Such sensors are configured to be housed before and after the filter, or just on one side. According to the installation of different filters, the device may modulate the speed of the airflow mechanism and/or other functions of the device that can be altered by the controller.

6.1 In an additional functionality, a filter sensing mechanism is provided to

distinguish between proprietary filters, and counterfeit filters. The result may limit device function, such that if an unlicensed filter is installed, it will not work. In one embodiment, this may rely on pressure, and/or air quality sensors to verify the effective properties of the filter, in a mechanism not unlike that described in point 6 (above).

6.2 In another embodiment, another way of approving filters requires the user to scan a unique code printed on the filters using a smartphone application. The code would be checked against a server, and a command sent to the device, enabling it to work with the new filters until they are depleted.

6.3 In another embodiment still, the method of restricting unauthorized filter use may be mechanical, utilizing a proprietary filter housing mechanism. The device may alert the user when filters are depleted and need to be changed. In particular smart phone (component 18 in Fig. 8) application may also send a message to users updating in real-time about the filter status as well as when the filters need to be changed. This can be done by measuring increasing pressure resistance in the filters as they capture polluted particles. Alternatively, or in addition to the pressure resistance method, pollutant particle sensors housed after the filters can measure a reduction in effectiveness of the filters at removing pollutant particles. 7.1 In one particular embodiment, the sensing mechanism is based on pressure and/or air quality sensors before and/or after the filter to measure airflow and determine when the filters need to be changed. For example: Sensors may measure the difference in air quality before and after the filter and compare to a performance range for the filter to determine whether it is functioning correctly - The device may also sense and account for air flow through the filter measured before, the sensors would sense the rebounding of particulates from the filter.

7.2 In an alternative option, the use of two pressure sensors before and after the filter measures differential pressure and determines when the filters need to be changed.

7.3 Sensors used to detect this information may include but not be limited to the use of a mems sensor, multiple mems sensors, optical sensors and or metal oxide pollutant sensors. Such sensors are illustrated as (14a, 14b) for the pressure sensors and (13a, 13b) for the air pollution sensors in the schematic diagram in

Fig. 8.

8. In one particular embodiment, control (component 15 in Figs. 4B and 8 for example) on the device operation is provided to users through a setting option that allows them to switch the device on and off based on the environment. Further, users may have the ability to take "air samples" by the use of a "refresh" button where they check their air quality at the exact given point in time.

8.1 LED lighting (component 16 in Figs. 4B and 8 for example) or alternative visual, or auditory cues can indicate the air pollution and device function, as well as when the device is on/off, and other device functions (such as the need to replace air filters, or device malfunction).

Description of the Negative Ionizer Use (Components 8a, 8b in Figs. 4A-4C, 5, 6 and

8) - In one aspect of the present invention, the use of negative ionizers is implemented as a third component for purifying the air. The anions are produced through a small electronic to purify the air by attracting and/or weighing down charged, polluted particulate matter that exists in the air.

Central ionizer components may sit separately from ionizer electrodes or brushes. This may be useful for form factor and ergonomics.

Particular non-limiting configurations of ionizer in the overall schematic structure of the air purification device are illustrated in Figs. 11A-11K, which will be discussed in further detail later in the description.

Use of Sensors (components (14a, 14b) and (13a, 13b) in the Figures) - In still another aspect of the present invention, sensor technology is installed or used in or integrated within the device comprising the ability to detect and/or measure some or all of the following listed elements and will not be limited to other items included outside this list: · Carbon Monoxide

• Lead

• Nitrogen Dioxide

• Ozone

• Sulfur Dioxide

· PM2.5, PM10

• VOCs (Formaldehyde, Benzene, Ethylene glycol, Acetone, NH3).

• Smoke (cigarette & other).

• Viruses, Bacteria

• Dust

· Pollen

• Mold Spores

• Odors

• Toxic Fumes

• Gases

· Dust Mites • Other particles, for example coal by-products

Sensors that detect such elements in the device include but not be limited to: mems air pollution sensors and/or metal oxide air pollution sensors.

Additional sensors may include environmental or system temperature or humidity, or sensors capable of measuring wind speed. These may support more accurate sensing of air quality. They may also help to switch the device on and off, or increase device airflow and pressure output according to environmental conditions such as wind speed. Wind can reduce the air purification level at user airways.

Real-time communication with users of the device of the present invention and continuous update of the state of the device, components and parts thereof are enabled through wire or wireless data transfer and processing devices communicating with the sensors (see for example smartphone or other wireless communication device represented by component 18 in Fig 8, a screen thereof displayed in Fig. 7):

1. In one particular embodiment, the sensors on the device detect the air quality in real- time and provide information to users when the filters need to be changed and when the battery needs to be charged. Such sensors may also be applicable to the different usable applications.

2. In still another particular embodiment, the sensors connect via Bluetooth technology, schematically illustrated in Fig. 8, to a smart device (18 in Fig 8) with the application installed that allows users to perform a variety of functions listed above.

Schematically speaking, the air purification device of the present invention comprises several basic components that can be arranged in different locations relative each other. Figs 11A-11K illustrate a selection of such possible configurations all within the scope of the present invention. Particularly, Figs. 11 A and 11B suggest a single path device where the primary airflow mechanism (22) sits before or after the filtration mechanism (7, 11), respectively. The introduction of an ionizer (8a, 8b) is optional. Figs. 11C-11D illustrate branched configuration of the device, having two branches extending from a single inlet (2a, 2b). Again here, the primary airflow mechanism (22) and the filtration mechanism (7, 11) can swap places. Fig. 11C shows the former preceding the latter in the two branches and Fig. 11D shows the latter preceding the former. Comparing to Figs. 11A-11B it is seen that the inlet can be central or specific to each branch.

In Figs. 11E-11F a two branched air purification configuration is shown. In Fig. HE, filtration mechanism (7, 11) is common to both branches. The filtration mechanism (7, 11) could sit at the rear of the device before the primary airflow mechanism (22). It could be a single unit or have two parts, each connected to a different airflow mechanism. If two parts filtration mechanism (7, 11) is used as in Fig. 11F, then both parts would be in capsulated in a single cartridge, allowing easy replacement of a single cartridge rather than two. In one particular embodiment, a single blower could branch into multiple filtration mechanisms. This is usually more efficient, but may or may not suit device ergonomics and form.

Figs. 11G-11H illustrate another two-branch configuration of the air purification device with secondary airflow mechanisms (24) that supplement the primary one (22). These two mechanisms (22, 24) distribute the required pressure and airflow requirements over a more suitable form factor. Another advantage is that the system may also allow one airflow mechanism (22, 24) to function without the other to modulate power use, airflow and pressure output as required. In Fig. 11G the primary airflow mechanism (22) is common to the two branches, resulting in a total of three airflow mechanisms. The device could use four airflow mechanisms (22, 24), two in each branch to further distribute components and provide additional benefits. During low pollution conditions the user may not require high levels of filtration.

Emission of negative ions may be enough to purify user environment. Accordingly, a secondary airflow mechanism (24) could blow the negative ions out of the device towards the user environment without filtration as shown in the bypass in Fig. 111. This blower would not be subject to the pressure drop at the filters and as such could require less power than the primary airflow mechanism. Other versions may use a valve to do this rather than a second airflow mechanism just for ion emission. The device controller could modulate power to the primary airflow mechanism (22) to lower its output to required levels.

Some components of the ionizer can be situated centrally, with ionizer electrodes, plates, brushes or other ion emitters situated nearer the outlets. This is shown in Fig 11J illustrating a two branch device with the central ionizer component (25) as a separate component to the ion emitter electrodes (8a, 8b), which themselves are placed closer to the outlet (4a, 4b).

The last exemplary configuration is illustrated in Fig. 11K having a replaceable 'spacer' element (26) introduced at various parts of the device, before or after the filters (7, 11) or in any other place. The 'spacer' (26) function is actually to permit operation of the device while adapting its size and form for different users. Alternatively, different sized filter cartridges, or holders for filter cartridges can be introduced that adapt the size for different users. Other methods of size adaptation may be explored within the scope and spirit of the present invention. Configurations

In one aspect, the device is configured in different arrangements of some or all of the base components. Different configurations alter the attributes of the device. Different balances of attributes may lend themselves to different applications and the differing needs of target users. Size expansion mechanism: The device design may be flexible, or may have different attachments to fit different neck sizes/ human forms.

Headphone configuration (Fig. 9D, element 40) - The headphones provide addition of wireless or wired headphone/earphone/communication headset functionality to any configuration of the device. Audio or headset functionality are added to the rest of the configuration. The headphone device may have its outlets positioned such that purified air are directed to the face when worn, and also when rested around neck. Helmet configuration (Figs. 9A-9B, element 20) - as described above, the air purification device (1) is incorporated into the helmet (20) in configuration that exposes the device inlets (4a, 4b) to the surrounding environment and direct the outlets (2a, 2b) within the helmet (20) and towards the user airways (See Fig. 9B). Stroller - (element 30 in Fig. 9C) - the configuration for this application follows the principle of installing the device in front of a child head and airways, which is particularly useful for passive filters, where the inlets (4a, 4b) (not shown in Fig. 9C. See Figs. 4A, 4B for this matter) are orientated away from the stroller for drawing air from the surrounding and the outlets (2a, 2b) directed towards the child face strearning purified air to his airways.

Mobile Application Elements

In one aspect, the air purification device of the present invention is supported by a mobile application that consists at least some, preferably all of the following elements used to enhance the overall user experience of the hardware device:

1. The mobile application allows users to collect data from the device sensors and

display the data alongside data lifted from databases according to the users location. To illustrate: if the device houses sensors for PM2.5, N02, & S02, then data from those sensors will be communicated to the mobile application. If it is of additional benefit to communicate to the user ozone level information, and the device does not house such a sensor, then ozone data may be delivered from a supplementary source (online databases or feeds of external sensor station information, or other) of ozone information for the user's location.

Examples of particular user scenarios 60-64 are provided in Fig. 6, demonstrating that the air purification device of the present invention is suitable for daily, regular activities indoors and outdoors. Further, enabling wireless communication with the device, particularly smartphone, provides control over the air purification device, data retrieval and programming of desired operation plans.

2. The crowdsourcing of data acquired by users mobile applications will be relevant sources of information for academia, corporations, industries, and governments.

Crowdsourcing of data means the collection of data from many devices, by direct wireless communication, or by communication through users' smart phones. This data can be processed and/or analyzed and/or distributed by a central system or individual smart devices to develop an understanding of air quality, as well as other useful insights.

3. Filter alert pop-up notification on application, providing information to users about the filter (i.e.: when it is due for a change, when to order more filters, what filter type to be using).

4. On/Off alerts that will notify users when the device has turned on and off based on the air pollution surrounding the users environment. The alerts also provide advice to users on what filter is recommended to use based on the environment and users location.

5. Device can be activated via smartphone - physical controls on device or smart

controls via phone. A user has the ability to choose when the device is on or off or has the ability to choose for the device to turn on and off automatically as the device detects poor air quality.

6. Automation via device controller. Alternatively, outsourcing control to smartphone application.

6.1 Processing of the air quality sensing and decision as to whether the device should be on or off is done via the in-build device controller or the decision can be outsourced to the smart phone application.

7. Sensors (or via controller (15)) and indications of device failure. Users are notified via sensors (13a, 13b), (14a, 14b) and notifications to the smart phone (18) when the device is not being properly used or when a problem is found that affects the full performance of the device.

8. App can be configured to serve user alerts according to configurable range of values (set by user, manufacturer or both). This gives users the ability to control what alerts about the device they receive. They can choose to have notifications about filter replacement and when the device should be on or off or they can choose to not have these notifications and manually change their filters and turn the device on and off on their own. In one particular embodiment, the settings are company pre-set and include all notifications available about the device (i.e.: when to change filters, powering on/off).

9. App measures difference between external data and device data.

a. External data - from online feeds / city sensors.

b. Turns the device on and off as well as device sensor data.

Accessories

In still another aspect, the device is further accessorized by peripheral, supporting and/or enhancing accessories. Such accessories may further be particularly made and designed for the device A non-exhausting list comprise the following: Docks

1.1 Enable to wirelessly charge the device on any surface, flat or curved. Further, wireless technologies that allow devices to be charged at a long distance (many meters away) from the charging station are also contemplated within the scope of the present invention.

1.2 Desk dock option with external fan allows users to charge the device at their desk while simultaneously purifying the air around the desk area.

1.3 Car dock allows users to attach the device to the car vent system and allow for air coming out of the vents to be purified.

1.4 Helmet dock is an alternative to the wearable device, where helmet users connect the device directly onto their helmet.

Headphones

2.1 The device may alternatively have the option to be used as regular headphones music and/or a hands-free device for phone use. Smell Cartridges

3.1 Users can control the smells around them through the use of one or both of the following methods and potentially other methods as well.

3.1.1 "Smell membrane" pre-loaded with a fragrance, where the fragrance can be loaded with any type of perfuming substance and at any given concentration. Further, the membrane may be designed to release the substance at a controlled rate pre-set based on, for example, the bonding strength of the substance to the membrane.

3.1.2 Filters with smell membrane that has a gage for users to control the intensity of the smell.

3.1.2.1 An example of this may include a gage of 1-8, where 1 would represent a light smell and 8 would represent a strong smell 3.2 Users have a choice of fragrances for the smell cartridges Applicable Uses

Some applicable applications to be used in sync with the device are included below and will not be limited to further development of additional applicable applications. 1. Helmets:

1.1 The use of a specialized helmet (20A) for users may be made available that comprises the core technology of the hardware device..

1.2 A regular helmet (20) with hardware attachment may be a second option to providing a solution to purified air for helmet users. The attachment would include the core technology of the hardware device.

1.3 The helmet attachment may use wind airflow and resistance rather than blowers to filter air more efficiently and effectively. In one case, as a motorcycle rider is riding, air will flow through a mechanism in the device and through device filters, purifying input air that can be delivered inside the helmet.

2. Paramedical

2.1 The hardware device can be used as a preventative device, by reducing levels of particulates delivered to users known to symptoms or ailments of diseases including: asthma, hay fever (allergic rhinitis), airborne allergies, legionnaires, COPD, pneumonia, cancers, etc.

2.1.1 Particularly, the device can cover a range of categories including: terminal conditionals, symptomatic, chronic, and lifestyle factors.

3. Service Workers

3.1 The hardware device can be used as a preventative device for workers that are exposed to toxic particulate matter and pollutants in their work fields. Some examples of workers that could benefit from this core technology include but are not limited to: 3.1.1 Nail salon workers and customers who are surrounded by toxic chemicals found in the air.

3.1.2 Hair salon workers and customers who are surrounded by toxic chemicals found in the air.

3.1.3 Painters who are exposed to toxic elements found within paint.

3.1.4 Construction workers who are exposed to a variety of elements and toxic air.

Childcare

4.1 Children may be more susceptible to various effects of air pollution, due to their lower height and proximity to outlets of air pollution such as vehicle exhaust that may contribute to increased inhalation of pollutants.

4.2 A range of varying devices is proposed to accompany children throughout their growth, using the core technology of the invention as a smaller device.

a. Particularly, the smaller device comprises the core technology of the larger device, GPS/location ability and an emergency button that can be used as an alert to parents when children are in dangerous air quality environments. b. Such devices may include, however are not limited to: strollers (30), play pens, child car seats, cribs, and headphones. The devices may be embodied as an attachment (removable or irremovable) or addition that is sold with, or after the purchase of other devices such as strollers, play pens, or similar childcare products. Alternatively air purification functionality may be built into such devices at manufacture.

i. In this particular configuration, the device is comprised of a miniaturized technology that attaches to the devices; the baby or child using the technology do not wear the technology.

ii. The purpose is to provide babies and children better air quality and for parents to be able to watch and monitor their children's air quality. This allows parents to aid one another in the understanding of allergic symptoms their children may display and prevent children from breathing in poor air quality that can cause other health issues. Lifestyle

Caters to users with a passion for self- measurement and improvement.

Allows users to measure and monitor their environment and improve the quality of the substances they breathe by removing impurities from their air. Outdoor Use

Outdoor sports are equated with health, but such activities in polluted air can have adverse effects on the health of those who pursue it. The invention as described and illustrated in the foregoing aims to annul this. Use of special face protective mask. The mask is configured to fit to users based on their face type and size and allow for users to receive only purified air. The air users' breathe out exits through two different outlets, ensuring users with purified air. Travel

7.1 In one particular application, the device of the present invention targets regular business travelers and those who are often using airplanes as their main method of travel.

7.2 Further, using the device gives users the comfort and security knowing that they will not get sick or catch the common cold while inflight.

7.3 An additional iteration of the device may be embodied inside a travel 'neck' pillow, for comfortable air purification whilst travelling. Fashion

Good air quality should be fashionable and with this in mind, the invention aims to target the fashion conscious as well. Accordingly, the device of the present invention is so designed with aesthetic characteristics that make it suitable for wearing without compromising users outfit and look.

8.2 Further, the device of the present invention is sufficiently small and discrete and can be worn under different types of clothing, particularly a collar of a shirt. Nevertheless, it has a sleek and beautiful design, which turns it into accessory that users are proud to show off.

8.3 Alternative configurations of the device could be integrated into woven materials or garments such as a scarf, necklace, or jacket. The device could slot into a zipped compartment at the neck of a jacket, allowing it to function out of view, this jacket may also house an additional battery, thereby extending device battery life.

8.4 The device could have replaceable covers, allowing users to configure the device style according to their taste, with different panels or covers.

Although selected embodiments of the present invention have been shown and described, it is to be understood the present invention is not limited to the described embodiments. Instead, it is to be appreciated that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and the equivalents thereof.

Attributes

As described above, the device of the present invention utilizes multiple elements to achieve air purification. Particularly, its components are developed and configured for the particular requirements of personal, portable air purification. In one particular aspect, choosing to better one element (e.g. size) may compromise another (e.g. run time), however the components and configurations described overcome a lot of the compromise. Furthermore, different components and configurations are described that may be better suited to different applications that are preferred by different users. The components described herein are suited to compose configurations that account for the needs of eventual products. Namely:

1. Size - The size of the components affects the size of the device. As the device is meant to be worn or carried, its size is key to its function. The size of the device is also conducive to its design, as a largely consumer product, the device's design is implicit in its value to users, marketability, and success.

2. Form Factor— As well as the size, an important factor lies in the measurements of components and the distribution of their volume across the device. The chosen components must fulfill a certain function, but different components can better fill that function in a different shaped device. The form factor of the components and their configuration affects device design & appeal, ergonomics, and functionality. This is implicit in its value to users, marketability, and success.

Figs. lOA-lOC visualize the application of neck- worn (1) purification device on a wearer. The different perspectives in the Figures show the location of the different components in the device (1), namely, blower, filter, batteries and electronics. The significance of arrangement of these components is in the weight and volume distribution along the length of the device (1). The different a-d postures of the wearer display weight distribution between front and back. Due to the weight difference between the components, rearrangement of relative positions of the components within the device (1) leads to different weight distribution.

Correspondingly, this provides a variety of configurations, each having certain weight distribution as evidenced in these Figures. Customized air purification device may, therefore, be manufactured according to user needs and personal comfort.

Fig. IOC provides top, front and side views of the device (1) worn on different dimensions of a user neck. Three options e-f and corresponding abstract views el-gl are shown, illustrating possible customization of size of the device to the wearer dimensions.

Run Time - According to its application, the device is required to run and exert its function for a certain time. The selection of components is crucial to extending run time of the device. The pressure drop across the system (filters, device design and configuration), power source, airflow source, and other elements described herein all affect the run time of the device, and are, therefore, considered in its design.

Effectiveness - Indoor and outdoor pollution, variation between different user environments and needs are taken into account in estimating air purification functionality of the device. Another factor is different pollutants that the device is required to filter in order to produce purified air.

Noise - Device operation is usually accompanied with noise produced by its parts, e.g. propeller, impeller. Minimizing, mitigating or silencing such noise is also envisioned within the scope of the present invention as part of the design and configuration of the device. Accordingly, suitable devices may be installed within the device to improve user's experience of air filtration with the device of the present invention.

Variance across user environment - The device is regularly required to function in varying environmental conditions with different pollution levels and types of pollutant. Accordingly, it is configured and designed to adjust or adapt to change in these conditions while continuously moving from one type of environment to another.

Price - Device configuration and design are made to fit varying price levels. Further, the device is configured and designed to be cost effective for a wide range of users. 8. Ease of Use - Examples include ease for the user to replace device filters, reducing barriers to successful uptake by more customers.

9. Durability - The ability of the device to resist different environmental conditions such as rain, wind, knocks, and other potential hazards.

10. Weight - A low mass device is preferable for most applications, but for others this may not matter, allowing to improve other attributes instead. It is to be understood that the invention is not limited in its application to the details set forth in the description contained herein or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Those skilled in the art will readily appreciate that various modifications and changes can be applied to the embodiments of the invention as hereinbefore described without departing from its scope, defined in and by the appended claims.

Claims

1. Air purification device comprising:

at least one inlet;

continuous airflow mechanism configured to draw environmental air through said inlet;

air purification components configured to be in fluid communication with said continuous airflow mechanism; and

at least one outlet towards a user.

2. The air purification device according to claim 1, further comprising air pollutant reduction mechanism configured to remove air particulates contributing to indoor and outdoor air pollution.

3. The air purification device according to claim 2, wherein said air pollutant reduction mechanism comprises at least one passive and/or active filter, said passive and/or active filter configured to filter air of desired particulates and achieve required purification by considering environmental mixing.

4. The air purification device according to claim 3, wherein said filter is selected from HEPA filter and active carbon filters configured to remove different sized particles from the air.

5. The air purification device according to claim 3, wherein said filter is selected from negative air ionization, electrostatic air filtration, micro plasma discharge and any combination thereof.

6. The air purification device according to claim 1, further comprising negative ionizer configured to produce anions through a small electronic by weighing down the positively charged, polluted particulate matter that exists in the air.

7. The air purification device according to claim 1, further comprising at least one blower, said at least one blower configured to drive intake of air at desired flow-rate, overcome filter pressure drop and drive air- flow to user airways.

8. The air purification device according to claim 1, further comprising ionizer that

negatively charges the air's ions so that floating dust particles will clump together.

9. The air purification device according to claim 1 , further comprising electronic module, said module configured for power management, blower control, wireless

communication and air quality monitoring.

10. The air purification device according to claim 1, wherein said outlet is configured to release purified air directed to reduce mixing with surrounding air due to wind and environmental air pollution.

11. The air purification device according to claim 1, further comprising sensors

configured to detect elements distributed, dispersed, airborne or carried in air.

12. The air purification device according to claim 1, wherein said sensors are selected from mems (Macro Electro Mechanical Systems) air pollution sensors and metal oxide air pollution sensors.

13. The air purification device according to claim 11, wherein said element comprising Carbon Monoxide, Lead, Nitrogen Dioxide, Ozone, Sulfur Dioxide, PM2.5, PM10, VOCs (Formaldehyde, Benzene, Ethylene glycol, Acetone, NH3), Smoke (cigarette & other), Viruses, Bacteria, Dust, Pollen, Mold Spores, Odors, Toxic Fumes, Gases, Dust Mites and coal by-products.

14. The air purification device according to claim 1, further comprising mobile application configured for communication with and control hardware components of said device.

15. The air purification device according to claim 14, wherein said communication is wire or wireless.

16. The air purification device according to claim 14, wherein said mobile application is configured to send to, receive from and process information related to air pollution in the vicinity of said air purification device.

17. The air purification device according to claim 1 configured as portable and/or

wearable device.

18. The air purification device according to claim 1, configured to be installed or

accommodated in or integrated with helmets, car vents, stroller, crib, goggles, clothes and covers.

19. The air purification device according to claim 1, configured for paramedical

application, protection of ongoing exposure to pollution, childcare protection, outdoor recreational use and inflight traveling.

20. The air purification device according to claim 1, wherein said continuous airflow mechanism comprises impeller or propeller.

21. The air purification device according to claim 1, wherein said air purification

components comprise replaceable filters.

22. The air purification device according to claim 1, wherein said device is electrically rechargeable.

23. The air purification device according to claim 1, further comprising peripheral, supporting and/or enhancing accessories.

24. The air purification device according to claim 1, wherein said accessories are selected from docks for wireless electrical charging, headphones and smell cartridges.

25. The air purification device according to claim 1, wherein said device is configured in arrangements suitable for applications selected from helmet, stroller, crib and headphones.

26. The air purification device according to claim 1 , wherein weight and dimensions of said device are customized for a user.

27. The air purification device according to claim 26, wherein said device is neack-worn device.

28. The air purification device according to claim 1, wherein said device is single branch device, wherein said continuous airflow mechanism is located before said purification component.

29. The air purification device according to claim 1, wherein said device is a single

branch device, wherein said purification component is located before said purification component.

30. The air purification device according to claim 1, wherein said device is double-branch device, wherein each branch comprises said at least one inlet, continuous airflow mechanism configured to draw environmental air through said inlet, air purification components configured to be in fluid communication with said continuous airflow mechanism, and at least one outlet towards a user, wherein said continuous airflow mechanism is located before said air purification components.

31. The air purification device according to claim 1, wherein said device is double-branch device, wherein each branch comprises said at least one inlet, continuous airflow mechanism configured to draw environmental air through said inlet, air purification components configured to be in fluid communication with said continuous airflow mechanism, and at least one outlet towards a user, wherein said air purification components are located before said continuous airflow mechanism.

32. The air purification device according to claim 1, wherein said device is double-branch device, wherein each branch comprises said at least one inlet, continuous airflow mechanism configured to draw environmental air through said inlet, , and at least one outlet towards a user, wherein said air purification components configured to be in fluid communication with said continuous airflow mechanism are shared by the two branches.

33. The air purification device according to claim 1, wherein said device is double-branch device, wherein each branch comprises said at least one inlet, air purification components configured to be in fluid communication with said continuous airflow mechanism, and at least one outlet towards a user, wherein said continuous airflow mechanism configured to draw environmental air through said inlet are shared by the two branches.

34. The air purification device according to claim 1, wherein said device is double-branch device, wherein each branch comprises said at least one inlet, continuous airflow mechanism configured to draw environmental air through said inlet, air purification components configured to be in fluid communication with said continuous airflow mechanism, at least one outlet towards a user, and secondary airflow mechanism.

35. The air purification device according to claim 34, wherein said device further

comprising central ionizer component in communication with ion emitter electrode on each branch.

36. The air purification device according to claim 1, further comprising spacer with tubing located between said continuous airflow mechanism and air purification components.

37. The air purification device according to claim 1, wherein said device is a single branch device further comprising secondary airflow mechanism in direct communication with said at least one inlet and said at least one outlet.