NZ793691A - Apparatus and System for Air Cleaning - Google Patents
Apparatus and System for Air CleaningInfo
- Publication number
- NZ793691A NZ793691A NZ793691A NZ79369117A NZ793691A NZ 793691 A NZ793691 A NZ 793691A NZ 793691 A NZ793691 A NZ 793691A NZ 79369117 A NZ79369117 A NZ 79369117A NZ 793691 A NZ793691 A NZ 793691A
- Authority
- NZ
- New Zealand
- Prior art keywords
- air
- receptacle
- filter
- aperture
- passageway
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title 1
- 238000001914 filtration Methods 0.000 claims abstract 2
- 230000001808 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
Abstract
air filtering and treatment apparatus, including: a housing having an air inlet, an air outlet, an air passageway between the air inlet and the air outlet, and a fan arranged to urge air through the air passageway between the air inlet and the air outlet; a sensor configured to measure an air quality parameter of the surrounding air environment; an indicator light; a controller in communication with the sensor, the fan, and the indicator light, wherein the controller is configured to selectively illuminate the indicator light based on the air quality parameter; wherein the housing includes a filter arranged to filter air passing through the air passageway, and a receptacle located toward the air outlet relative to filter, wherein the receptacle is adapted to a hold treatment composition such that an evaporable vapour associated with the treatment composition is able to accumulate in a headspace of the receptacle, the receptacle including at least one aperture located at a side thereof, and wherein at least a portion of the air passageway is shaped such that air flows substantially perpendicularly past the at least one aperture of the receptacle such that a pre-determined amount of the evaporable vapour is entrained into the filtered air released from the air outlet. lity parameter of the surrounding air environment; an indicator light; a controller in communication with the sensor, the fan, and the indicator light, wherein the controller is configured to selectively illuminate the indicator light based on the air quality parameter; wherein the housing includes a filter arranged to filter air passing through the air passageway, and a receptacle located toward the air outlet relative to filter, wherein the receptacle is adapted to a hold treatment composition such that an evaporable vapour associated with the treatment composition is able to accumulate in a headspace of the receptacle, the receptacle including at least one aperture located at a side thereof, and wherein at least a portion of the air passageway is shaped such that air flows substantially perpendicularly past the at least one aperture of the receptacle such that a pre-determined amount of the evaporable vapour is entrained into the filtered air released from the air outlet.
Description
An air filtering and treatment apparatus, including: a housing having an air inlet, an air outlet, an
air passageway between the air inlet and the air outlet, and a fan arranged to urge air through
the air passageway between the air inlet and the air outlet; a sensor configured to measure
an air quality parameter of the surrounding air nment; an indicator light; a controller
in communication with the sensor, the fan, and the indicator light, wherein the ller is
configured to selectively illuminate the indicator light based on the air quality parameter; wherein
the g includes a filter arranged to filter air passing through the air passageway, and a
receptacle located toward the air outlet relative to filter, wherein the receptacle is d to
a hold treatment composition such that an able vapour associated with the treatment
composition is able to late in a headspace of the receptacle, the receptacle including at
least one aperture located at a side thereof, and wherein at least a portion of the air eway
is shaped such that air flows substantially perpendicularly past the at least one aperture of the
receptacle such that a pre-determined amount of the evaporable vapour is entrained into the
filtered air released from the air outlet.
793691 A1
Apparatus and System for Air Cleaning
Related Applications
This is a divisional application of New Zealand Patent Application No. 754846, filed
Oct 2017, which in turn claimed priority from Australian Provisional Patent Application
Nos. 2016905336 filed 22 December 2016, and 2017901850 filed 17 May 2017. The contents
of New d Patent Application No. , Australian Provisional Patent Application
No. 2016905336 and lian Provisional Patent Application No. 2017901850 are herein
incorporated by reference in their entirety.
Technical Field
The invention s to an apparatus and system for air cleaning, in particular, the
filtering and treating or sanitising of indoor air.
Background
Air quality, in particular, indoor air quality may be compromised by the ce of
dust, pet dander, odours, airborne organic matter such as mould and airborne pathogens.
Accordingly, various types of indoor air filtering devices have been ed.
One such air-filtering device includes a housing having a fan that draws air through
the rear centre of the unit, passes the air through a filter and then discharges the air through a
grille at the top of the housing. The filter may be a HEP A (High Efficiency Particulate Air)
filter that is arranged to collect copic particles such as allergy-provoking pollen grains,
dust mites, mould spores and pet dander les. An ioniser may also be included.
A problem with these devices is that the device cleans only the air that is drawn into
the housing and through the filter. Another problem is that the filtering of the air may not
remove and kill some microscopic particles such as dust mites and mould spores.
Other such air-filtering devices may include aromatic or ectant
substances that are emitted from the air-filtering device into the filter air stream.
However, a problem with such air-filtering devices relates to the longevity and
efficacy of the air freshening or disinfectant substances, and ease of use for a user to,
for example, replenish the substance. A further problem relates to the control of the
release of the substance, and such air-filtering devices may e relatively complex
means to control the release of the substance.
The invention sed herein seeks to overcome one or more of the above
identified problems or at least provide a useful ative.
Summary
In accordance with a first broad aspect there is ed, an air filtering and
ent apparatus, the apparatus including: a housing having an air inlet, an air
outlet, an air passageway between the inlet and outlet, and a fan arranged to urge air
through the air passageway between the air inlet and the air outlet, wherein the
housing includes filter arranged to filter air passing through the air passageway, and a
receptacle located toward the air outlet ve to filter, wherein the receptacle is
adapted to hold treatment composition such that an evaporable vapour associated with
the treatment composition is able to accumulate in a ace of the receptacle, the
headspace including at least one aperture located at a side thereof, and wherein a
portions of the air passageway, that may be an outlet portion, is shaped such that air
flows substantially perpendicularly past the at least one aperture of the receptacle such
that a pre-determined amount of the evaporable vapour is entrained into the filtered air
released from the air outlet.
In an aspect, the receptacle is d to received a removable cartridge
containing the treatment composition, the cartridge terminating short of the at least
one aperture so as to allow fluid ication between the treatment composition
and the least one aperture.
In r aspect, the receptacle includes a lid removeably securable thereto.
In yet another aspect, the lid includes a head and a neck, and wherein the neck
provides the side of the headspace and includes the at least one aperture.
In yet another aspect, the head includes radial lip extending at least partially
over the air outlet so as to outwardly deflect airflow.
In yet r aspect, the radial lip is located immediately above the at least
one aperture, and n the at least one aperture is located at the air outlet.
In yet another aspect, the outlet portion of the air passageway is arranged to be
normally vertically oriented.
In yet another aspect, the at least one aperture substantially skirts the side of
headspace.
In yet another aspect, the at least one aperture is ed in the form of a
plurality of space apart apertures substantially ng the side of headspace.
In yet another aspect, the outlet portion of the air passageway substantially
skirts the headspace and the apertures.
In yet another aspect, the at least one aperture is provided in the form of a
plurality of radially arranged apertures spaced apart and substantially ng the side
of headspace, and wherein the outlet n of the air passageway is annular in shape
and substantially skirts the plurality of radially arranged apertures.
In yet another , the at least one aperture is arranged at the air .
In yet another aspect, a size of the at least one aperture is selected such that the
pre-determined amount of the evaporable vapour is in range of about 0.5 to 2.5 grams
per day, and preferably about 1 gram per day.
In yet another aspect, the size of the at least one aperture is selected such that
the pre-determined amount of the able vapour is in range of about 0.5 to 2.5
grams per day with an airflow rate through the air passageway in the range of about 4
to 8 litres per second.
In yet another aspect, the housing includes a base and a top, and wherein the
air inlet is d toward the base and the air outlet is located toward the top.
In yet another aspect, the at least one aperture is provided in the form of a
plurality of apertures arranged toward a top of the receptacle, the plurality of res
being arranged perpendicular to the direction of the air directed by the outlet n
of the air passageway.
In yet another aspect, the outlet portion of the eway is annular in shape
being defined between an outer wall of the housing and the receptacle.
In yet another aspect, the receptacle includes an associated removable lid
shaped to cover the receptacle, the lid including a head and a neck, the neck ing
the ity of res.
In yet another aspect, the head of the lid is arranged to deflect air directed by
the passageway at least partially laterally of the housing.
In yet another aspect, the neck of the lid is received at least partially within a
rim of the outer wall of the housing, the width of the outlet being defined between the
neck and the rim of the outer wall of the housing.
In yet another aspect, the lid is removable to access the receptacle.
In yet another aspect, the filter is located within a bottom portion of the
housing toward the base and the receptacle is located in an upper portion of the
housing toward the top.
In yet another aspect, the base is removable to change the filter.
In yet another aspect, the fan is llable via a controller.
In yet r aspect, the housing includes a particle sensor and a conduit to
communicate nmental air with the particle sensor, the particle sensor being in
communication with the controller such that the fan is controllable in response to the
particle level detected by the le sensor.
In yet another aspect, the apparatus includes a further fan adapted to circulate
environmental air to the particle sensor.
In yet another aspect, the apparatus includes an indicator light in
communication with the controller, the indicator light being selectively illuminated by
the controller to indicate a quality of the air as detected by particle sensor.
In yet another aspect, the housing contains the controller, a battery m
communication with the controller and at least one user control.
In yet another aspect, the ller is adapted to communicate with a remote
device.
In yet another aspect, the treatment composition is adapted to effect or kill air
born pathological or biological material.
In yet another aspect, the apparatus includes a substantially sealed inner
electronics housing located within the g, the inner g being located
between the fan and the receptacle, and being shaped to direct air from the fan to the
outlet portion of the air passageway.
In accordance with a second broad aspect there is ed, a system including
an apparatus as defined in any one of the previous claims and a remote device adapted
to communicate with and operate the device.
In an aspect, the system includes a controller and a sensor in communication
with the controller configured to measure at least one of air particles and a dew point
of the surrounding air environment, and provide a user prompt if the least one of the
air particles and the dew point exceed a predetermined threshold.
In an aspect, the system includes a controller and a sensor in ication
with the controller ured to measure at least one of particles and a dew point of
the surrounding air environment, and automatically te the fan of the apparatus if
at least one or the particles and the dew point levels exceed a predetermined threshold.
In r aspect, the system includes a controller and a sensor in
ication with the controller configured to measure at least one of particles and
a dew point of the surrounding air environment, and automatically increase the fan
speed of the apparatus if at least one of the particles and the dew point levels exceed a
predetermined threshold.
In yet another aspect, the at least one of the particle and dew point sensors are
carried by the housing of the apparatus.
In accordance with a third broad aspect there is provided, an air filtering and
treatment apparatus, the apparatus including: a housing having an air inlet toward a
base thereof, an air outlet toward to top thereof, an air passageway between the inlet
and outlet, and a fan arranged to urge air h the air eway between the air
inlet and the air outlet, wherein the housing includes filter located toward the base
arranged to filter air passing through the air passageway, and a receptacle located
toward the air outlet relative to , wherein the base is removable to allow changing
of the filter, and n the receptacle includes a removable lid to allow fitting of a
removable dge containing a treatment composition to the receptacle such that
an evaporable vapour associated with the ent composition is able to accumulate
in a headspace of the receptacle, the headspace including at least one aperture located
at a side thereof, and wherein an outlet portion of the air passageway is shaped such
that air flows past the at least one aperture of the receptacle such that a rate of the
able vapour is entrained into the filtered air released from the air outlet.
In accordance with a fourth broad aspect, an a1r filtering and treatment
apparatus, the apparatus including: a housing having an air inlet toward a base f,
an air outlet toward to top thereof, an air passageway between the inlet and outlet, and
a fan arranged to urge air through the air passageway between the air inlet and the air
outlet, wherein the housing includes filter ed to filter air passing through the air
passageway, and a receptacle located toward the air outlet relative to filter, wherein
the filter is d toward the base and the base is removable to allow changing of the
filter, and wherein the receptacle includes a removable lid to allow fitting of a
removable cartridge ning a treatment composition such that a vapour associated
with the treatment composition is able to late in the acle, the receptacle
including at least one aperture adapted to communicate the vapour with filtered air
such that emitted air contains a pre-determined amount of the vapour.
In accordance with a fifth broad aspect there is provided, an air filtering and
treatment tus, the apparatus including: a housing having an air inlet, an air
outlet, an air passageway n the inlet and outlet, and a fan arranged to urge air
through the air passageway between the air inlet and the air outlet, wherein the
housing includes filter arranged to filter air passing through the air passageway, and a
receptacle located toward the air outlet relative to filter, n the filter is
removable to allow changing of the filter, and wherein the receptacle is d to
e a removable cartridge containing a treatment composition, the acle
including at least one re adapted to communicate a vapour associated with the
treatment ition with filtered air such that emitted air contains a pre-determined
amount of the vapour.
In accordance with a sixth broad aspect there is provided, a method for air
filtering and treating, the method including: drawing air though a housing using a fan
such that air is passed between an inlet and an outlet of the housing; filtering the air
using a filter arranged between inlet and the outlet to provide filtered outlet air; and
treating the filtered air proximate the outlet by communicating the filtered air with a
receptacle containing a treating composition such that a portion of the treating
composition is entrained into the filtered outlet air.
In an , the method includes: measuring air y parameter; and at least
one of activating and ng the fan speed based on the measured air quality
parameter.
In another aspect, the method includes: measuring an air quality parameter;
and providing an air quality alert based on the measured air quality parameter.
Brief Description of the Figures
The invention is described, by way of non-limiting example only, by reference
to the accompanying figures, in which;
Figu re 1 is a front perspective view illustrating an example of the apparatus;
Figu re 2 is a rear perspective view illustrating an example of the tus;
Figu re 3 is a front view illustrating the apparatus;
Figu re 4 is a rear view rating the apparatus;
Figu re 5 is an exploded parts front perspective view illustrating the apparatus;
Figu re 6 is a front sectional view illustrating the apparatus;
Figu re 7 is a side sectional view illustrating the apparatus;
Figu re 8 1s an ed parts front perspective view illustrating the fan
housing;
Figu re 9 is an exploded parts front perspective view illustrating the electronics
housing;
Figu re 1 0a is an exploded parts front perspective view illustrating the gel
cartridge;
Figu re 1Ob is a front perspective view illustrating the gel cartridge;
Figu re 11 is an exploded parts front perspective view illustrating an
intermediate coupling and light ring of the apparatus;
Figu res 12a and 12b respectively illustrate perspectives views of a lid of the
housing being removed to reveal a receptacle and a sanitising composition being fitted
to the receptacle;
Figu res 13a and 14b respectively rate perspective views of a removable
base of the g and a filter being fitted to the base of the housing; and
Figu re 14 is a system diagram illustrating the apparatus in communication
either directly or indirectly with an external device such as smart phone or the like.
Detailed Description
Referring to Figures 1 to 7, there is shown an apparatus 10 for the filtering and
sanitising of air, in particular, indoor air. The tus 10 includes a housing or
housing assembly 12 having an air inlet 14, an air outlet 16 and a fan 18 ed to
urge air between the air inlet 14 and the air outlet 16. The housing assembly 12
includes an upper housing 13 and a lower housing 15 that are coupled via an
intermediate coupling 17. The intermediate coupling 17, shown best in Figure 11,
supports lights 21 in a ring 23 centrally of the upper and lower housings 13, 15. The
lights 21 may be Red, Green Blue (RGB) lights.
The g 12 includes a filter 20 and a composition 22 arranged between the
air inlet 14 and the air outlet 16, the arrangement being such that filtered air is
icated with the composition 22 so as to allow a part or amount of the
composition 22 to be entrained into the filtered air ed from the air outlet 16.
Accordingly, air released by the apparatus 10 has been filtered and also includes a
small amount of the composition 22. As is further detailed below, the composition 22
may be an evaporable vapour releasing composition such as gel or gel cartridge
impregnated or formulated with essential oils or other suitable substances.
Turning firstly to the apparatus 10 in more detail, the g 12 es a
base 28, a top 30 and a skirting sidewall 32. The base 28 is fitted with a on pad
29 to assist with supporting the base 28. The housing 12 s an air passageway 24
between the air inlet 14 and the air outlet 16, and includes a receptacle 26 to hold or
contain the composition 22 and a lower void 34 to hold or locate the filter 20. The air
passageway 24 generally directs air from the air inlet 14, through the filter 20 and fan
18, and about the receptacle 26 to the air outlet 16. The housing 12 includes outlet
vanes 27 located proximate the outlet 16. In this e, the outlet vanes 27 are
supported by the receptacle 26 and extend radially therefrom.
The air inlet 14 is located toward the base 28 and the air outlet 16 is located
toward the top 30 so that air is generally drawn from the base 28 of the apparatus 10
and emitted from or toward the top 30 of the apparatus 10. The housing 12 may be
generally cylindrical and may be free standing. In this example, the overall size of the
housing 12 may be about 90mm diameter x 240mm high, and therefore be suitable for
desktop use. However, other shapes and support configuration are possible and
contemplated herein such as square shapes and wall mounted variations.
One or more apertures 36 are provided between the receptacle 26 and air
directed by the passageway 24 so as to provide controlled entrainment part or a
portion of the composition 22. In more detail, in this example, the receptacle 26 is
cylindrical and is spaced apart from the side wall 32 to define an outlet annular
n 38 of the passageway 24 that skirts the receptacle 26 and terminates at the air
outlet 16. The annular portion 38 has an area that is about the same as the open area of
the fan 18. It is noted that in other examples, the apertures 36 may be located
re between the air outlet 16 and the fan 18, and may not always be proximate
the air outlet 16.
The acle 26 includes an associated ble lid 40. The lid 40 includes
a head 42 and a neck 44 extending therefrom. The neck 44 includes a free ed
coupling end 46 and includes the one or more apertures 36 skirting the neck 44
between the free coupling end 46 and the head 42. In this example, the one or more
apertures 36 are provided in the form of a ring small radially spaced apart apertures 39
through which part of the composition, such as evaporable or volatile gasses, pass
from with the receptacle 26 toward or at the outlet 16. The free ng end 46 is
arranged to rotatably engage with the receptacle 26 and stop with enough clearance so
that the one or more apertures 36 are exposed to the air flow.
A rim or lip 48 of the head 42 of the lid 40 is d so as to deflect air
flowing through the passageway 24 upwardly and partially laterally of the housing 12.
It is noted that the one or more apertures 36 are positioned proximate the outlet 16
where expansion takes place to assist to utilise a venturi effect. The one or more
apertures 36 are also relatively small to assist to contain the composition 22 and
inhibit or reduce evaporation unless air is g.
In a fitted condition, the lid 40 is coupled to and received by the receptacle 26
and rim 48 extending radially proud of the receptacle 26 above and at least partially
over and above the passageway 24. The apertures 36 on the neck 42 of the lid 40
remain unobstructed to allow fluid communication from receptacle 26. The upper rim
50 of the g 12 is located below and outwardly of the rim 48 of the lid 40. The
lid 40 is removable to access the receptacle 26 and replace the composition 22, as
required.
The receptacle 26 is arranged to provide a headspace 41 above the
composition 22 to allow for vapour associated with the composition 22 to build or
accumulate within the headspace 41. The apertures 36 are located about the ace
41 to allow for fluid communication of the vapour through the apertures 36 and into
the eam. The neck 42 of the lid 40 provides at least part of the side wall of the
headspace 41.
Referring more specifically to Figures 10a and 10b, in this e, the
composition 22 is preferably supplied as a gel within a replaceable cartridge 70 that is
fitted, when installed, within the receptacle 26. The replaceable cartridge 70 has a
ble lid 72 that is removed, and may be ded, prior to the cartridge 70
being fitted to the receptacle 26. It is noted that the arrangement is such that a rim of
the cartridge 70 remains below the apertures 36 on the neck 42 of the lid 40. The fill
level of the gel is such that the headspace 41 is maintained above the gel. The
apertures 36 are located about the sides of the headspace 41. r, it is noted that
that replaceable cartridge 70 may also carry a liquid or viscous liquid. Other
examples, may omit the dge 70 and, for example, a liquid or viscous liquid may
be poured directly into the receptacle 26 and captured therein with the lid 40.
Turning to the evaporation rate for the vapour from the gel, the evaporation
rate is believed to be y a on of the size of the apertures 36, which are
relatively small, and secondly a function of fan speed. Temperature and humidity may
also have a effect. Accordingly, the size of apertures 36 has been determined to be the
primary control of the pre-determined rate of evaporation from the gel. Referring to
Table 1 below, the size of the at least one re 36 is ed such that the predetermined
rate of the evaporable vapour is in range of about 0.5 to 2.0 grams per day,
and preferably about 1 gram per day. It noted that 0.6 grams/day is deemed the
minimum rate for biological efficacy.
In this example, twelve apertures each have a er of 2mm are provided.
The collective total size of the apertures 36 may be order of about 30 to 40 mm2 such
that, for example, an airflow about 1.5 to 2 m/s will release about 1 gram per day of
the composition 22, as shown below in Table 1. A single slot aperture having a similar
area may achieve a similar result. Accordingly, as will be further details below, the
fan speed 18 may be used to control the amount of the composition 22 entrained in the
emitted filtered air.
The airflow rate through the air passageway 24 is the range of about 4 to 8
litres per second. The air flow variation has an effect on the evaporation rate, being in
the range ofabout O. 7 5 to 1.10 grams per day.
Apertures (12 by� 2mm) with 150 grams of Gel in Receptacle
e (V) Airflow (m/s) Airflow (LIS) Evaporation Rate
(g/day)
3.5 1.26 4.85 0.75
4.5 (Typical) 1.58 6.08 1.05
.5 1.91 17.35 1.08
Table I: Evaporation Rate from Gel based on Fan Speed.
The quantity of the composition 22, namely the gel, may be about 150 grams
within the canister 70. Accordingly, the lifespan of the gel at a rate of about 1 g/day
(at a medium setting of 4.5V) is about 5 months or 150 days. Of course, the lifespan
may vary depending on the evaporable component of the gel or nature of the
composition 22.
Turning now to the fan 18 and filter 20, the fan 18 may be an electric axial fan
arranged to rotate about a vertical axis of the housing 12. The air flow is therefore
generally al between the inlet 14 and the outlet 16. In this example, the fan 18 is
located between the lower void 34 in which the filter 20 is d and the upper
receptacle 26 in which the composition 22 is located. The fan 18 is controlled by a
controller 52 located in an inner electronics housing 53, shown best in Figure 9,
located between the fan 18 and the receptacle 26. The fan 18 is supported by a fan
g 19. The fan housing 19 also supports a power button PCB 69. The fan 18 may
be a m package with nominal 5V supply.
The inner housing 53 is shaped to splay outwardly from the fan 18 to the
annular n 38 of the passageway. This shape assists to guide the airflow around
the inner electronics housing 53 to minimise losses and associated noise. The inner
housing 53 is sealed with a lid 51.
The inner housing 53 also houses further electronic components such as a
y 54 and sensors 55 that communicates with the controller 52 that is fitted to a
main PCB 56. A battery mounting foam 49 is ed between the battery 54 and the
lid 51.
A further PCB 56 having a communications module 58 is located at a side of
the g 12 adjacent an on/off switch 60 and a charging port 62 is provided on an
opposing side of the housing 12. The sensors 55 are preferably a particle or dust
sensor 57 and, in some examples, an additional dew point sensor 59. The particle
sensor 57 may be configured to detect PM2.5 particulate matter (ie particles of 2.5µ
size). The controller 52, battery 54, PCB 56, sensors 55, a memory device 61, a
communications module 58, on/offswitch 60 and a charging port 62 all form part of a
control system 100 that is further described below.
It is noted that in this example conduits 64a, 64b are provided through the side
wall 32 of housing 12 between the external environment and the particle sensor 57
within the inner housing 54. The inlet conduit 64a leads to an inlet port 66a via a
mesh 64 that is sealed via a seal 63 to the side wall 32, and tely to the particle
sensor 57. A particle sensor fan 65 is provided to draw air though the conduit 64a and
exhaust the air via the port 66b and the exhaust t 64b. The particle sensor fan
65 is lled controller 52. This allows the particle sensor 57 to sample the external
air quality and provide a signal indicative of the air quality to the controller 52 based
on the suspended particulate matter in the air. The controller 52 may activate the
apparatus 10 or adjust the speed of the fan 18 based on the sampled air quality.
In this example, the filter 20 is preferably a HEPA filter h which air is
drawn from the inlet 14 to an outer passage 77, h the filter 60 to an inside
passage 71 and then into the fan 18. The s 20 seals within the housing 12 to
prevent bypass of w. A ble base cap 68 is provided at the base 28 of the
housing 12 to enclose the lower void 34 that houses the filter 20. The base cap 68 may
be removed to access and replace the filter 20. The HEPA filter may be capable of
filtering up to 1.0µ particle size. The HEPA filter may in this example be 72mm OD x
84mm high.
Turning now to the composition 22, the composition 22 is preferably an
evaporable substance or nce that emits a volatile adapted to affect, reduce or kill
air born pathological or ical material. An example of the composition 22 may
be a gel insert, cartridge or disk that is impregnated with an essential oil. The essential
oils that have been found to affect, reduce or kill mold are, for example, clove oil,
cinnamon, peppermint, rosemary, eucalypt oils have also been found affect against
mold and bacteria. Accordingly, a gel with a blend of clove oil, rosemary and
eucalyptus extracts may be used. A gel quantity of about 150 to 200 grams may
initially be ed. An e gel may include a polysaccharide gelling agent, or
in other examples, a simple n gelling agent. The gelling agent being formed with
the blend evaporable oils.
Referring now to Figure 14, the apparatus 10 may be provided as part the
system 100 for air cleaning and sanitising indoor air. The apparatus 10 includes
control and sensor components 106 ing the controller 52 of the apparatus 10
may communicate, using the communication module 58, directly or indirectly via a
network 102 with a remote computing device 104 that may be a smart phone, tablet or
the like. The computing device 104 may include and operate application software in
communication with a remote server (not shown) that allows the computing device
104 to communicate with and operate the tus 10. The communications module
58 may include WiFi™ and or oth™ functionality to allow communication
with the ing device 104.
The computing device 104 may be used to ure the controller 52 to
automatic modes of operations such as operating times (i.e timer or on/off timer),
speeds and modes. The controller 52 may also be configured to send es or
alerts to the computing device 104 under predetermined conditions. For example, if
the sensors 55 determine a poor air quality reading - the controller 52 may send an
alert to the computing device 104 to prompt the user to turn on the apparatus 10. In
some examples, a real-time air quality reading may be provided and these readings
may be stored on the memory device 59. Historical data may then be stored and later
viewed by the computing device 104. The control system 100 may also allow
pluralities of the apparatuses 10 to be controlled via a single computing device 104,
and comparable air quality readings and status to be display for each le
apparatus 10.
In some examples, the controller 52 may be configured to automatically
activate the fan 18 of the apparatus if detects particles and the dew point exceeds a
predetermined threshold. In other examples, the controller 52 may be configured to
increase the speed of the fan 18 in response to an elevated air quality reading, such as
high particulate matter. The se fan speed functions to increase the local filtration
and also increase the entrainment rate of the composition 22.
In a more ic e ng to the dew point sensor 59 - this is a
combined temperature and humidity sensor to track conditions throughout the day &
night where mould spores may be released. Scientific data 'look up' charts may be
provided and checked against actual readings. Dew point is a function of temperature
and relative humidity and, for example, at 20 degrees rade at 50 % relative
humidity, the dew point is about 9 degrees. Mould may start to grow at room
humidity of 80%. This means that in the given example, mould may start to grow at a
surface temperature of about 13 degrees or less on the walls. Accordingly, for
example, a trigger or alert for mould may be when the dew point is about 13 degrees.
However, other trigger points for the dew point may be selected, as required.
Should conditions for mould spore release occur, the user will be alerted
and/or the apparatus 10 may automatically switch on the fan 19 (depending on user
settings). The hardware for the sensor 59 could be either an off-the-shelf dew point
sensor, or individual temperature/humidity sensors - ver is deemed suitable.
r functionality of the system 100 may include one or more of; on/off
control; fan speed control - low, medium, high settings. The medium setting will be
about 1 to 1.5 m/s; View graph/data of le count (live data and historical data);
Compare particle count data against approved levels of particulates and provide
graphical ck; Air quality range to be good, moderate, poor and very poor.
Acceptable levels of pm2.5 will differ for each country. A country setting may be
required in the application software which will adjust the "good-very poor" range to
suit the local policy.
The application software may be ured to: view graph/data of dew point
(temperature & humidity); and live data and historical data; compare dew point data
against scientific thresholds and provide graphical feedback (green/red etc); provide
feedback to determine when the HEPA filter need changing or the pre-filter requires
ng; provide feedback with when the composition/gel requires changing; auto
mode, to switch on/off with a timer; set-up modeI settings page; HEPA & gel
cartridges will be required to be changed over the course of a year; and as part of the
application software, there may be a g to allow users to automatically order
consumables such as the filter. The air quality via the dust sensor 57 may be
configured to be sampled at regular als, for example every 5 or 10 seconds, or
every 60 seconds. This requires selective operation of the dust sensor 57 and the dust
sensor fan 65 by the controller 52.
The software of the system 100 may include algorithms which extrapolate Fan
Speed and time of use, to determine the approximate life of both the HEPA filter and
composition / gel cartridge. Accordingly, methods performed by the system 100
including the apparatus 10 and device 104 may e various maintainence type
routines. For example, the software application may determine when HEPA filter or
composition requires changing and alerts the user. For example, the controller 52 or
the remote device 104 may time the on-time of the fan 18 and provide an alert when a
pre-determined number of hours have passed therefore being indicative of the life of
the HEPA filter. The user may need to reset the time counter through the application
software of the remote device 104, once they have changed either HEPA filter or
composition.
In addition to warnings through the application software, the on/off button 60
of apparatus 10 is also configured to change colour to indicate various statuses of the
tus 10. For example, the on/off button 60 may be configured as follows: White
LED = Apparatus 10 is switched on, Solid Orange LED = HEPA filter requires
changing (or pre-filter washing), Blinking Orange LED= Gel /composition es
ng, Red LED= Both HEPA and Gel/composition require changing. The on/off
button 60 may be be a non-latched push-push micro-switch. It may require a multicolour
LED which is used as a maintenance tor.
The system 100 may be configured to operate in an access point method
and/or Internet (client) mode. Access point method will be a direct WiFi connection
between the apparatus 10 and the smart device 104. The apparatus 10 will act as the
network host and the smart device 104 will connect to the SSID of the apparatus 10
using a factory set rd (which can later be changed via an application of
ation software ed by the smart device 104. While in this mode, the
application software will only allow simple functions: a. Setting of the home/office
WiFi router credentials; b. Turning apparatus 10 ON or OFF c. Changing the user
settings of the device such as fan speed, timer, LED colour etc.cl. Real-time reading of
the air quality.
In the Internet (client) mode, the apparatus 10 has connected online using the
SSID and credentials of the local WiFi hotspot (eg at home or office). These
credentials would have been set up earlier when the device was in Access Point Mode.
While in this mode, the apparatus 10 will log onto a cloud hosted web service on a
server (not shown) of the system 100 where it can be uniquely identified and its
functions are made available over this service. The cloud hosted web service may
allow multiples of the apparatus 10 to be simultaneously ted and controlled by
a user. For example, multiples of the apparatus 10 may provide dust and dew point
readings at different locations within a dwelling or le dwellings. The cloud
hosted web e may also allow related apparatuses 10, such as those owned by
friends, connected and share data such as air y data. The cloud hosted web
services may also allow full remote control of one or more of the apparatuses 10.
In the Internet (client) mode, the device now provides full functionality. These
include all functions present in Access Point Mode as well as other internet enabled
functions: a. Automatic resetting of the local device clock to et time; b. Ability
to upload y stored data related to air quality and usage; c. Ability to be
connected to a group of units at a home or office setting. For example, the user is able
to allocate names to units such as 'Master Bedroom', 'Living Room' etc. d. Set up of
timed ON/OFF functions. e. Reporting of trend data from the cloud.
In relation the application software ed by the device, the
functions of the software may further include: On/off control; Fan Speed control will
use a sliding 1-5 scale; View graph/data of particle count. Live data and ical
data; Compare particle count data t approved levels of particulates and provide
graphical feedback. Air quality range to be Good, Moderate, Poor and Very Poor.
Acceptable levels of PM2.5 will differ for each country; View data of dew
point (temperature & humidity).
Live data and historical data; Compare dew point data against
scientific thresholds and provide graphical feedback (green/red etc); Provide feedback
to determine when the HEPA filter need changing or the pre-filter requires cleaning;
Provide feedback with when the gel requires changing; Auto Mode, to switch on/off
with a timer; Set-up mode I settings page; HEPA & Gel cartridges will be required to
be changed over the course of a year. As part of the application, there may be a setting
to allow customers to automatically order consumables; Outdoor PM2.5 readings to
be displayed next to Indoor PM2.5 levels; The application software may be
ured to allow consumers to connect to friends who also use apparatus 10 and
review their friends indoor & outdoor PM2.5 levels. To enable this feature, friends
will need to request an invitation to join their network and accept this invitation. Users
may also be able to remove a friend.
g now to a method of use, once configured, a method for air
filtering and sanitising air may e drawing air h the g 12 using the
fan 18 such that air is passed between the inlet 14 and the outlet 16 of the housing 12.
Filtering the air using the filter 20 arranged between inlet 14 and the outlet 16 to
provide filtered outlet air; Sanitising or treating the filtered air proximate the outlet 16
by communicating the ed air with a receptacle 26 containing the composition 22
such that a portion of the composition 22 is entrained into the filtered outlet air.
The method of use may also include measunng an a1r quality
parameter such as suspended particles, dew point or humidity, and at least one of
activating and altering the fan speed based on the ed air y parameter. The
altering of the fan speed increasing the filtering and also increasing the entrainment
rate (grams/day) of the composition 22. In some examples, the method may also
include the measuring of an air quality parameter and providing an air quality alert
such as an alert message to the computing device 104. Various further s of
operation such as recording, alerts and apparatus management methods such as filter
and composition replacement indicators are also contemplated herein. The method
may include activating RGB lights 21 of the light ring 23 in a colour or colour
sequence reflective of the quality of the air, for example, an amber or red light
sequence indicating a high level of dust or particles in the air.
ageously, there has been bed an apparatus, system and
method for cleaning or treating indoor air. In particular, the apparatus is configured to
firstly filter air and then communicate the ed air with a composition that is
adapted to effect, reduce or kill airborne biological or material such as mould,
ia, fungus and the like.
The arrangement is such that apertures of the receptacle provide slow
release of the composition into the emitted airflow. The release rate may be increased
and decreased based on the fan speed, although the small aperture size assists to keep
the release rate vely small and within a pre-determined range. The apparatus may
be stand alone having an internal controller or in communication with an external
device such as a smart phone to allow alerts such as air quality alerts to be provided to
the user and allow the user to remotely configure and control the apparatus.
Further advantageously, the apparatus has a removable lid to allow
easy replacement of the cartridge that carries the composition, and a removable base
to allow easy replacement of the filter. The internal controller or external device may
be configured to alert a user to change the cartridge or filter. Further still the apparatus
may icate with a remote device that allows ng of the air quality, air
quality alerts, uration of the apparatus and control over the apparatus.
] Throughout this specification and the claims which follow, unless the
context requires otherwise, the word "comprise", and variations such as "comprises"
and "comprising", will be understood to imply the inclusion of a stated integer or step
or group of integers or steps but not the exclusion of any other integer or step or group
of integers or steps.
The reference in this specification to any known matter or any prior
publication is not, and should not be taken to be, an acknowledgment or admission or
suggestion that the known matter or prior art publication forms part of the common
general knowledge in the field to which this specification relates.
While specific examples of the invention have been described, it will
be understood that the invention extends to alternative ations of the features
disclosed or evident from the disclosure ed herein.
Many and s modifications will be apparent to those skilled in the
art without departing from the scope of the invention disclosed or evident from the
disclosure provided herein.
Claims (15)
1. An air filtering and treatment apparatus, including: a housing having an air inlet, an air outlet, an air passageway between the air inlet and the air outlet, and a fan ed to urge air through the air passageway between the air inlet and the air outlet; a sensor configured to measure an air quality parameter of the surrounding air environment; an indicator light; a controller in communication with the sensor, the fan, and the tor light, wherein the controller is configured to selectively illuminate the indicator light based on the air quality parameter; wherein the housing includes a filter arranged to filter air passing through the air passageway, and a receptacle located toward the air outlet relative to filter, wherein the receptacle is adapted to a hold treatment composition such that an evaporable vapour associated with the treatment composition is able to accumulate in a headspace of the receptacle, the receptacle including at least one aperture located at a side thereof, and wherein at least a portion of the air eway is shaped such that air flows substantially perpendicularly past the at least one re of the receptacle such that a pre-determined amount of the able vapour is ned into the filtered air ed from the air outlet.
2. The apparatus according to claim 1, wherein the housing includes an upper housing and a lower housing that are coupled together via an intermediate ng, wherein the intermediate coupling supports the indicator light centrally of the upper housing and the lower housing.
3. The apparatus according to claim 1 to 2, wherein the indicator light is a light ring including lights.
4. The apparatus ing to claim 3, wherein the lights include red, green and blue lights.
5. The apparatus according to any one of claims 1 to 4, wherein the controller is configured to selectively illuminate the indicator light having a particular colour or colour ce representing the air quality parameter.
6. The apparatus according to any one of claims 1 to 5, n the sensor is one a particle sensor; or a dew point sensor.
7. The apparatus according to any one of claims 1 to 6, wherein the receptacle of the apparatus is adapted to receive a removable cartridge containing the treatment composition, the cartridge terminating short of the at least one aperture so as to allow fluid communication between the treatment composition and the least one aperture.
8. The apparatus according to claim 7, wherein the receptacle includes a lid bly securable thereto. 9. The apparatus ing to claim 8, wherein the lid includes a head and a neck, and wherein the neck provides the side of the headspace and includes the at least one aperture.
9. The apparatus according to claim 9, wherein the n of the air passageway is arranged to be normally vertically oriented.
10. The tus according to any one of claims 1 to 9, wherein the at least one aperture substantially skirts the side of the headspace.
11. The apparatus according to any one of claims 1 to 10, wherein the at least one aperture is provided in the form of a plurality of spaced apart apertures substantially skirting the side of the headspace.
12. The apparatus according to any one of claims 1 to 11, wherein the portion of the air passageway substantially skirts the headspace.
13. The apparatus according to any one of claims 1 to 10, wherein the at least one aperture is provided in the form of a plurality of radially arranged apertures spaced apart and substantially ng the side of headspace, and wherein the portion of the air passageway is annular in shape and substantially skirts the plurality of radially arranged apertures.
14. The apparatus according to any one of claims 1 to 13, wherein a size of the at least one re is selected such that the pre-determined amount of the evaporable vapour is in range of 0.5 to 2.5 grams per day, and preferably about 1 gram per day.
15. The apparatus according to any one of claims 1 to 13, wherein a size of the at least one aperture is selected such that the pre-determined amount of the evaporable vapour is in range of about 0.5 to 2.5 grams per day with an airflow rate through the air passageway in the range of about 4 to 8 litres per second.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2016905336 | 2016-12-22 | ||
AU2017901850 | 2017-05-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ793691A true NZ793691A (en) | 2022-10-28 |
Family
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