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WO2016004399A1 - Systèmes de purificateur d'air ambiant des et procédés associés - Google Patents

Systèmes de purificateur d'air ambiant des et procédés associés Download PDF

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Publication number
WO2016004399A1
WO2016004399A1 PCT/US2015/039127 US2015039127W WO2016004399A1 WO 2016004399 A1 WO2016004399 A1 WO 2016004399A1 US 2015039127 W US2015039127 W US 2015039127W WO 2016004399 A1 WO2016004399 A1 WO 2016004399A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
room
air cleaner
filtration
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2015/039127
Other languages
English (en)
Inventor
Charles Eric Hunter
Iyam LYNCH
Bradley G. Johnson
J. Sid Clements
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Free Air Inc
Original Assignee
Free Air Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Free Air Inc filed Critical Free Air Inc
Publication of WO2016004399A1 publication Critical patent/WO2016004399A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
    • F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/30—Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan

Definitions

  • aspects of the present disclosure relate to air purification and more particularly to a high efficiency air cleaner for removing ultra-fine particles from a room.
  • PM10 airborne particles that are less than 10 microns in diameter
  • UFPs Ultra- fine particles
  • Airborne diseases such as bacterial or viral diseases, also present worldwide health issues. Such issues are especially concerning where a highly communicable, serious or life threatening disease emerges and spreads in a population, particularly if the disease is resistant to treatment or difficult to treat with existing therapies.
  • SIDS small cell death syndrome
  • a room air cleaner includes a housing having an air inlet and an air outlet. At least one filtration fan is configured to draw air through the air inlet into the housing and generate a filtration air flow.
  • a filter box is disposed within the housing and has at least one primary filter. The filtration air flow is provided to a surface of the primary filter and the at least one primary filter removes ultra-fine particles from the air and outputs purified air.
  • At least one recirculation fan is configured to generate a recirculation air flow to direct the purified air into the room through the air outlet.
  • Figure 1 illustrates an example air filtration system including a room air cleaner.
  • Figures 2A and 2B show a top perspective view and a bottom perspective view, respectively, of an example room air cleaner.
  • Figures 3A and 3B show a top perspective view and a bottom perspective view, respectively, of an example room air cleaner with the housing shown transparent.
  • Figure 4 illustrates an example filtration box.
  • Figure 5 is a block diagram depicting a cross-sectional view of an example room air cleaner.
  • Figure 6 is a block diagram of example electrical components of a room air cleaner.
  • Figures 7A and 7B show example filter layer configurations.
  • Figure 8 illustrates an example pleated filter material.
  • Figure 9 shows filter material pleated into a panel.
  • Figure 10 illustrates an example filter configuration with three panels.
  • Figure 11 shows an example filter configuration with five panels.
  • Figures 12A and 12B each show exemplary construction of a filter.
  • Figure 13 shows an example network environment, including an air manager running on at least one server or other computing device coupled with a network, for air filtration and breathing monitoring using one or more room air cleaners.
  • Figure 14 is an example calibration user interface for setting parameters for one or more room air cleaners.
  • Figure 15 is an example user preferences user interface for customizing the operation of one or more room air cleaners.
  • Figure 16 is an example monitoring user interface for monitoring breathing patterns of one or more users.
  • Figure 17 illustrates example operations for purifying air in a room.
  • Figure 18 is an example computing system that may implement various systems and methods discussed herein.
  • the air filtration system includes a room air cleaner having a housing enclosing an air recirculator and an air filter. Air is drawn into the housing through an air inlet for purification, and purified air is recirculated into the room through an air outlet.
  • the room air cleaner filters UFPs at superior filter and power efficiencies by separating recirculation air flow from filtration air flow. In particular, air is pulled through a primary filter by one or more filter fans, and the filtered air is recirculated using one or more recirculation fans.
  • the room air cleaner provides protection against airborne pathogens.
  • the room air cleaner may further be used for remote monitoring of breathing patterns and to initiate alarms where the breathing patterns suggest cease of breathing or an occurrence of respiratory exacerbation.
  • the room air filtration system 100 includes a room air cleaner 102 including a housing 104 having an air inlet 106, an air outlet 108, and a plurality of wheels 110 facilitating relocation of the room air cleaner 102.
  • the room air cleaner 102 may further include a controller 112 to control the operations of the room air cleaner 102 and a speaker 114 to output various sounds and/or alerts.
  • the room air cleaner 102 provides purified air to one or more users 116 in a room or other enclosed space.
  • the room air cleaner 102 may be used in a nursery 118 to provide purified air to infant while permitting a user to monitor the infant's breathing, for example, via a user device 120.
  • the air inlet 106 draws ambient air from the room into the housing 104 for purification and recirculates purified air into the room via the air outlet 108.
  • the room air cleaner 102 removes UFPs and airborne pathogens from the ambient air in the room and recirculates purified air into the room.
  • the room air cleaner 102 separates air flow through the housing 104 into a filtration air flow and a recirculation air flow, thereby achieving high filtration and power efficiencies.
  • the room air cleaner 102 generates the filtration air flow at a lower rate than the recirculation air flow.
  • the relatively lower air flow rate during filtration achieves a low face velocity at the primary filter, which provides a high filter efficiency.
  • the filtration air flow provided to the surface of the primary filter is provided a low face velocity, e.g., at a face velocity of less than 5 cm/s, less than 4 cm/s, less than 3 cm/s, less than 2 cm/s, less than 1 cm/s, etc.
  • the filtration air flow has a particle efficiency down to 99.9999.
  • the room air cleaner 102 filters rooms, such as the nursery 118, to levels below 10 "10 for particles 10 nanometers and below. While the filtration air flow is generated at a lower rate to increase filtration efficiency, the recirculation air flow is maintained at a high rate to ensure that the filtered air is distributed throughout the room.
  • the room air cleaner 102 achieves high efficiencies through the use of a high surface area membrane filter, the use of stacked axial filtration fans, and remoting (separation and removal) of electronics in the room air cleaner 102 from the filtration air flow, as described herein.
  • the high surface area membrane filter increases filtration efficiency, while the stacked axial filtration fans decrease power consumption by the room air cleaner 102 without sacrificing static pressure.
  • Remoting the electronics from the filtration air flow eliminates or otherwise reduces a potential for volatile organic compound (VOCs) contamination from the electronics.
  • the controller 112 includes one or more sensors and/or controls.
  • the controller 112 automatically adjusts fan speed of the room air cleaner 102 based on measurements obtained by the sensors.
  • the room air cleaner 102 may be set to an automatic mode where the controller 112 automatically reduces the fan speed where the sensors detect that the ambient air in the room meets a minimum quality threshold. By reducing the fan speed where the ambient air has a minimum quality, the controller 112 conserves power.
  • the room air cleaner 102 may also be set to a manual mode, where the room air cleaner 102 operates and adjusts the fan speed according to settings input by the user 116 using the controller 112.
  • the controller 112 may have a switch for setting the room air cleaner 102 to an off position or a plurality of fan speeds (e.g., high, medium, and low).
  • the controller 112 may include one or more light emitting diodes (LED) to indicate various operation settings (e.g., fan speed) or feedback (e.g., alarms).
  • LED light emitting diodes
  • the controller 112 includes a motion sensor switch, which activates a motion sensor to determine if the user 116 is occupying the room. Based on the determination of whether the user 116 is present in the room, the controller 112 may adjust the fan speeds of the room air cleaner 102. For example, if the motion sensor detects motion, the controller 112 may decrease fan speed to decrease noise by running the room air cleaner 102 in quiet mode, and when no motion is detected, the controller 112 automatically increases the fan speed to clean more air volume in the room.
  • the controller 112 may further include one or more components for calibrating operation of the room air cleaner 102 on the room air cleaner 102 or using the user device 120.
  • the controller 112 includes a panel for manual operation of the room air cleaner 102.
  • the panel on the controller 112 may include one or more universal serial bus (USB) ports, voice recognition input (e.g., a microphone), and a docking station for the user device 120.
  • USB universal serial bus
  • the manual operation may have inputs to control various functions including, without limitation: on/off, room size selection, and/or a cycle selection for the room air cleaner 102 based on when the user 116 is likely to be absent from the room.
  • the room size is entered by selecting a size (small, medium, and large) based on a comparison to standards provided to the user 116.
  • the room size is entered by inputing the dimensions of the room.
  • the controller 112 may control the fan speed of the room air cleaner 102 based on the cycle selection and the room size.
  • the room air cleaner 102 may run at a high flow rate of approximately 400 CFM to clean the air in the room, and when the user 116 is likely to be in the room, the room air cleaner 102 may run at reduced flow rates to reduce noise disturbance.
  • the controller 102 generates clean air parameters for a clean cycle, including a clean cycle flow rate and period, using the room size and the cycle selection.
  • the user 116 may set the cycle for the nursery 118 from 8:00 AM until 3 :00 PM when the child is likely to be absent from the nursery 118 and set the room size to dimensions of 12 feet long by 12 feet wide by 8 feet tall, totaling a volume of 1152 cubic feet.
  • the controller 112 uses these inputs, the controller 112 generates clean air parameters of a clean cycle flow rate of 400 CFM for a period of four hours, with a room air change every 2.88 minutes. Over the four hours that the room air cleaner 102 is running at 400 CFM, 83 room air changes would occur with a face velocity of 1 cm/s, which circulates purified air throughout an entirety of the nursery 118.
  • the room air cleaner 102 decreases the flow rate at a linear rate to 100 CFM with a face velocity of 0.25 cm/s.
  • the flow rate slows over the course of two hours so that when the child returns to the nursery 118 at 3:00 PM, the air is the air is clean and being quietly circulated.
  • the room air cleaner 102 may further be programed using the controller 112 and/or the user device 120 to determine when the child will be sleeping to adjust the room air cleaner 102 to an even quieter flow rate of approximately 50 CFM in this example. If the room air cleaner 102 runs a clean cycle is during sleeping hours, the max flow rate may be set at approximately 200 CFM as to not wake the sleeping child.
  • the room air cleaner 102 further includes one or more speakers 114 configured to generate various sounds, including music, alerts, ambient sounds, and/or other sounds, as detailed herein.
  • the speakers 114 may be sized and produce noise levels based on the operation of the room air cleaner 102.
  • the speakers 114 may be 180 watt 6.5 inch loudspeakers configured to emit a noise level up to 92 decibels at a frequency range from 50 hertz to 21 kilohertz, thereby allowing a variance for different sound outputs.
  • the housing 104 of the room air cleaner 102 includes one or more side surfaces 200 extending between a proximal surface 202 and a distal surface 204 to enclose the internal components of the room air cleaner 102.
  • the air inlet 106 is disposed near the distal surface 204
  • the air outlet 108 is disposed near the proximal surface 202.
  • the distal surface 204 may comprise or include the air inlet 106 in the form of one or more pre-filters 208 through which ambient air may be drawn into the housing 104
  • the proximal surface 202 may comprise or include the air outlet 108 in the form of one or more vents 206 through which purified air is recirculated into the room.
  • the housing 104 may be a variety of shapes and sizes.
  • the housing 104 has dimensions of approximately 14.4 in (36.5 cm) x 14.4 in (36.5 cm) x 32.75 in (83.2 cm). It will be appreciated, however, that the housing 104 may be sized to fit into various areas in the room (e.g., under a desk or counter) and as such may smaller or larger with various shapes.
  • the housing 104 may have a height ranging from approximately 25 inches to 32 inches, with the internal components sized accordingly. Other sizes are also contemplated.
  • the room air cleaner 102 is lightweight to facilitate relocation.
  • the housing 104 may be constructed from a light-weight durable material, including metal, plastic, ceramic, and/or the like.
  • ambient is drawn from the room into the housing 104 through the pre-filter 208 into a filter box 210 using one or more filter fans 212.
  • the filter box 210 includes one or more surfaces 304 extending between a distal surface 300 and a proximal surface 302, with the filter fans 212 disposed along an air path between the distal surface 300 and the pre-filter 208 and the proximal surface 302 positioned relative to the air outlet 108.
  • the pre-filter 208 filters large particles that could potentially build up on and/or damage the filter fans 212 and/or components of the filter box 210.
  • the pre- filter 208 filters large particles that would decrease the lifetime of one or more primary filters 306 of the filter box 210.
  • the pre-filter 208 may have any suitable filter pore size and may be formed in pleated or non-pleated configurations configured to produce a very low pressure drop.
  • the pre-filter 208 may be formed from a variety of suitable filter materials used in High-efficiency particulate arrestance (HEP A) class filters.
  • HEP A High-efficiency particulate arrestance
  • the pre-filter 208 may be formed from Polytetrafluoroethylene (PTFE), Polyethylene terephthalate (PET), activated carbon, impregnated activated carbon, and/or the like.
  • the filter fans 212 generate the filtration air flow which draws ambient air from the air inlet 106 and directs the air at the primary filters 306 of the filter box 210 at a low face velocity.
  • the filter fans 212 may include a plurality of fans in a series stacked, axial fan configuration (stack), which allows the pressure output to be additive, without an increase in overall air flow rate.
  • the filter fans 212 thus are highly energy efficient, and when multiple filter fans 212 are configured in series, a substantial pressure output is provided while maintaining efficient power delivery.
  • the filter fans 212 may run off 48 VDC with high static pressure.
  • the primary filters 306 comprise composite filter media or other suitable filter materials.
  • the primary filters 306 may include any Ultra Low Penetration Air (ULPA) grade filter membrane material providing extremely high collection efficiency and low pressure drops.
  • the primary filters 306 may include an inert material with a small pore size, such as PTFE, PET material, and/or the like. These materials may also be, optionally, electrostatically charged.
  • the primary filters 306 are a single pleated or sheet of material.
  • the primary filters 230 are co-pleated or laminated with other desired materials for combined benefits.
  • the primary filters 306 are made with a non-woven, porous, PTFE membrane providing superior resistance to moisture, chemicals, acidity, alkalinity, and organic solvents.
  • the dimensions of the filter box 210 may be sized based on the overall dimensions of the room air cleaner 102.
  • the total surface area of the primary filter 306 may generally be the size of a small room.
  • the large surface area of the primary filter 306 filters nanop articles, such as viruses, smoke, cat dander, and other allergens, with a collection efficiency better than 99.99999% for 30 nm size particles. With such a collection efficiency, a carbon activated filter, which is pressure drop intensive, is unnecessary for fine particle removal.
  • the room air cleaner 102 runs at 200 CFM, which is 5663 1/min standard liters per minute (SLM).
  • SLM standard liters per minute
  • the room size rating of a purifier using 200 CFM is 300 ft 2 (27.9 m 2 ). This rating means that there will be 5 air changes per hour (ACH) in a 300 ft2 (27.9 m 2 ) size room.
  • the flow rate of 200 CFM (5663 SLM) equates to a filter face velocity of approximately 1.2 cm/s. This face velocity is very slow, increasing the collection efficiency.
  • the filtration flow rate may be increased to 700 CFM (19822 SLM), which equates to 1050 ft 2 (97.5 m 2 ), the size of a small house.
  • This filtration flow rate has a face velocity of 4.1 cm/s.
  • the number of ACH for a room size of 300 ft 2 increases to 17.5 using a 700 CFM flow rate, meaning a room air exchange occurs every 3.4 minutes.
  • Another advantage to using a larger size is the pressure drop on the primary filter 306 is very small. Running the room air cleaner 102 at 200 CFM will only have a pressure drop of 0.18 in (0.47 cm) across the primary filter 306, permitting slower fan speeds and reducing noise level and power consumption.
  • FIG. 5 a cross-sectional view of the room air cleaner 102 is shown.
  • ambient air is drawn into the room air cleaner 102 through one or more inlet vents 400 disposed at the air inlet 106, which may be positioned anywhere on the housing 104 including, without limitation, the distal surface 204 or one or more of the side surfaces 200.
  • the inlet vents 400 may include grating to filter large particulates.
  • the air is drawn through the inlet vents 400 and directed at a primary filter 402 using one or more filter fans 404. Stated differently, the filter fans 404 generate a filtration air flow through the primary filter 402.
  • the filter fans 404 may be oriented in a stacked configuration as detailed herein.
  • a recirculation air flow is generated by drawings air through recirculation air inlets 406 using one or more recirculation fans 408.
  • the recirculation air inlets 406 may be protected by grates and may include one or more pre-filters, as described herein.
  • Purified air is output through one or more outlet vents 410 at the air outlet 108.
  • the room air cleaner 102 separates air filtration from air recirculation, thereby enhancing efficiency.
  • the room air cleaner 102 may include one or more differential pressure sensors (e.g., pressure sensors 412 and 414).
  • the pressure sensor 412 measures pressure of a cavity of the housing 104 relative to the atmosphere.
  • the pressure sensor 412 effectively measures any particle loading that could exist on the primary filter 402, which would cause an increase in the pressure differential between the cavity and the atmosphere.
  • an indicator LED on the controller 112 would illuminate, signaling that the primary filter 402 requires changing.
  • the room air cleaner 102 may send an alert to the user device 120 or generate other alerts, including visual, audio, tactile, and/or the like.
  • the primary filter 402 may comprise a total area of 100-300 square feet (e.g., 100, 125, 150, 175, 200, 225, 250, 275, 300 square feet) with one or more layers of load bearing material and filter material.
  • the primary filter 402 construction provides the room air cleaner 102 with an efficiency of 10 "10 of particles down to 10 nanometers in size at a face velocity of 0.25 cm/s at a flow rate of 100 CFM. This efficiency allows the filter to capture UFPs and airborne viruses, preventing inhalation of dangerous particles by the users 116.
  • the filtration fans 404 draw air through the primary filters 402 through the interior of the housing 104 and through the outlet vents 410, as shown in Figure 5.
  • the filtration fans 404 may include any suitable fan configuration as described herein.
  • the filtration fans 404 may be configured to generate a static pressure of 2.4 inches of water at a max flow rate of 400 CFM with a particle face velocity of 1 cm/s.
  • the filtration fans 404 include one fan to move adequate air to filter a given volume of air.
  • the filtration fans 404 include a plurality of fans placed in series to increase the overall static head pressure in the room air cleaner 102.
  • the pressure sensor 414 is disposed on the inside of the housing 104 to generally serve as a control.
  • the pressure sensor 414 may be configured to monitor a head pressure and control the filtration fans 404.
  • the sensor may regulate the power to the filtration fans 404 to maintain a flow rate set by the controller 112 and/or the user device 120.
  • the pressure sensor 414 is set at 0.3 inches of water.
  • the recirculation fan 408 may be a high flow fan disposed near the air outlet 108 to draw ambient air from the room and circulate all the air, thereby directing unfiltered air at the air inlet 106.
  • the recirculation fan 408 has a max flow generation of approximately 600 CFM.
  • the outlet vents 410 may include grating to prevent debris from falling into the room air cleaner 102, as well as prevent any children from putting their hands into the room air cleaner 102 and injuring themselves with the recirculation fan 408.
  • the primary filter 402 includes a high surface area (e.g., 100- 300 square feet) of filter membrane material, enabling operation at 400 CFM with a face velocity of 1 cm/s, thereby achieving filter efficiencies of 99.9999%.
  • a single particle may be sufficient to cause infection.
  • the room air cleaner 102 is thus configured to remove all particles from a room. As an example, consider a large room that has a volume of 1152 cubic feet that contains that contains a virus particles (say the influenza) at a concentration of 16,000 per cubic meter - at this concentration the total number of influenza particles in the room would total approximately 522,153. Using the room air cleaner 102, only 0.53 or approximately 1 particle would remain the room. When the fan speed is switched to the lower level of 100 CFM, the room air cleaner 102 would remove all of the particles from the room.
  • the room air cleaner 102 includes a power source 600 providing power to one or more electrical components.
  • the power source 600 may include, without limitation batteries, electric power via an outlet, solar power, and/or the like.
  • the power source 600 includes A/C power (e.g., 110 volts) provided to one or more converters 602.
  • the converters 602 may include, without limitation, an AC/DC converter for a filter fan 606, an AC/DC converter for a circulation fan 608, an AC/DC converter for other electronics, and/or the like.
  • Various components of the room air cleaner 102 may be controlled with a processor 604, as detailed herein.
  • the room air cleaner 102 includes one or more sensors 618 for monitoring internal and external conditions.
  • the sensors 618 may include the pressure sensors 412-414, a microphone 620, one or more particle detectors 622, and/or the like.
  • the particle detectors 622 may be used for detecting air particles, pollutants, contaminants, NOx, COx, and adjusting operation of the room air cleaner 102 accordingly.
  • the particle detectors 622 may be located in a region of the room air cleaner 102 exposed to unfiltered air, a region of the room air cleaner 102 exposed to filtered air, or both a region of the room air cleaner 102 exposed to unfiltered and a region of the room air cleaner 102 exposed to filter air.
  • Any suitable sensor and/or detector may be utilized for the particle detectors 622, depending on the parameter to be monitored, such as fine particle sensor, NOx, COx, and/or the like.
  • the particle detectors 622 may employ an optical scattering technique.
  • the microphone 620 may be used to capture sounds emitted in the room, such as breathing, crying, and/or the like, as described herein. It will be appreciated that the sensors 618 may include a variety of other inputs for monitoring and/or air filtration. For example, the sensors 618 may include a motion sensor to detect motion in the room.
  • the room air cleaner 102 may further include one or more outputs, including, without limitation, one or more LEDs 612 and speakers 610 for outputting audio and visual content.
  • the speakers 610 may be used to generate sounds, such as music, ambient noise, and/or alerts.
  • the room air cleaner 102 may be controlled using one or more settings 614 and/or using the user device 120 via a connection 616 (e.g., wired or wireless).
  • the settings 614 includes a multiple position switch that turns the fans 606 and 608 off or determines one of a plurality fan speeds.
  • the user device 120 may be used for various operations, as described herein, such as: monitoring air quality over time in one or more rooms, operating one or more room air cleaners 102, compare indoor air quality levels to outdoor or citywide air quality levels, and/or the like.
  • one or more fans includes the filtration fans 606 and the recirculation fans 608.
  • the filtration air flow is separated from the recirculation air flow with separate fans.
  • the recirculation fan 608 may include one or more fans configured to expel air through the air outlet 108. Stated differently, the recirculation fan 608 distributes filtered air throughout the room during operation of the room air cleaner 102. This operation requires a powerful yet energy efficient fan that can distribute a high flow of air without producing too much noise (e.g., less than 80 dB).
  • the recirculation fan 608 provides a static pressure of 4.136 inH20 with a flow rate of 607 CFM and runs on 48 volts at 8000 rotations per minute.
  • the filtration fan 606 draws contaminated air through one or more filters and transfers the newly filtered air to the recirculation fan 608 to be distributed throughout the room during operation of the device. This operation requires that the fan(s) 606 be powerful enough to overcome the pressure drop of the filters as well as maintain energy efficiency.
  • the filtration fans 606 may be arranged in a series configuration. Similar to the recirculation fans 608, the filtration fans 606 operate without producing too much noise (e.g., less than 80 dB).
  • the filtration fan 606 provides a static pressure of 2.610 inH20 at a flow rate of 160.2 CFM and runs on 12 volts at 9200-9600 rotations per minute.
  • a filter configuration 700 includes a screen 702 and a filter with a plurality of layers 704-708.
  • the filter includes a moisture resistant layer 704 and a carbon activated layer 706 with a plurality of support bonding layers 708.
  • another filter configuration 702 includes the same layers in the filter as the configuration 702 with the addition of an antimicrobial layer 710 and an additional support bonding layer 708.
  • contaminated air enters through the screen 702 where grating collects coarse (large) particles.
  • the air then may travel through a region that traps particles smaller than the previous grated region of the screen 702.
  • the particles that make it through enter the antimicrobial layer 710 and/or pass through the activated carbon layer 706 to remove odors and VOCs. After the air passes through this region it enters into the primary filter for removal of UFPs.
  • the filter media described herein such as the pre-filters 208 and/or the primary filters 306 may be constructed with a composite material configuration 800 including a plurality of layers of filter materials, as described herein, co-pleated into a plurality of pleats 802 using a thermal procedure or adhesive-based bonding to attach one or more additional layer(s) of filter material.
  • the filter media 800 described herein may be arranged in a paneled pleated configuration 804.
  • the panel 804 may have a width 810, length 808, and pleat depth 806 to achieve the various operational parameters as descried herein.
  • the filter panels 804 may be loaded in various configurations. As shown in Figure 10, the filter panels 804 may be arranged in a configuration 900 with three panels, and as shown in Figure 11, the filter panels 804 may be arranged in a configuration 900 with five panels.
  • the three panel configuration includes a screen 902, a pre- filter 904 with a plurality of layers 906-912, and a primary filter 914.
  • the pre-filter 904 includes a moisture resistant layer 906, a plurality of support bonding layers 908, an antimicrobial layer 910, and a carbon activated layer 912. Unfiltered air 916 travels through the filter configuration 900 and filter air 918 is output.
  • the five panel configuration includes a screen 902, a first filter panel 904 with a plurality of layers 906-910, a second filter panel 912 with a plurality of layers 908 and 914, and a primary filter 916.
  • the panel 904 includes a moisture resistant layer 906, a plurality of support bonding layers 908, and a antimicrobial layer 910.
  • the panel 912 includes a carbon activated layer 914 and a plurality of support bonding layers 908. Unfiltered air 918 travels through the filter configuration 900 and filter air 920 is output.
  • the amount of carbon for one of the filters is determined based on the following equation:
  • T is the time in minutes until 10% break through
  • Wc is the weight of carbon in pounds
  • a and b are experimental coefficients related to solvent types captured by the filter
  • t is the contaminant boiling point
  • C is the contaminant concentration entering the filter in ppm
  • M is the contaminant molecular weight
  • Q is the airflow rate in CFM.
  • the primary filter comprises either a Type 1 (e.g., filter configuration 1000) or a Type 2 filter (e.g., filter configuration 1006).
  • the Type 1 filter 1000 is a multilayer membrane filter that includes multiple layers of polytetrafluoroethylene (PTFE) 1004 that are separated by a load bearing layer 1002 such as polyester (PE), polypropylene (PP) or polyethylene (PET), as shown in Figure 12A.
  • PTFE polytetrafluoroethylene
  • PE polypropylene
  • PET polyethylene
  • the Type 2 filter 1006 is a single layer membrane filter composed of a PTFE membrane 1004 mounted to a load bearing layer 1002 such as PE, PP, or PET, as show in Figure 12B.
  • This filter construction while still highly efficient in filtration, is generally not as efficient as Type 1 because Type 2's pore size is 0.1 micrometers in diameter.
  • an air manager 1102 is in communication with one or more room air cleaners 102 and other network components via a network 1104, which may be any computing network, including, without limitation, the Internet, a local intranet, a Virtual Private Network (VPN), and/or the like.
  • a network 1104 may be any computing network, including, without limitation, the Internet, a local intranet, a Virtual Private Network (VPN), and/or the like.
  • the room air cleaner 102 may be in communication with the air manager 1102 over a wired (e.g., USB connection) or wireless connection (e.g., Bluetooth connection).
  • the user 116 accesses and interacts with the air manager 1102 using the user device 120 to operate the room air cleaner 102, monitor the operational parameters of the room air cleaner 102, and/or monitor one or more users, for example, infants in the nursery 118.
  • the user device 120 is generally any form of computing device capable of interacting with the network 1104, such as a personal computer, terminal, workstation, portable computer, mobile device, tablet, multimedia console, etc.
  • the network 1104 is used by one or more computing or data storage devices (e.g., one or more databases 1106 or other computing units described herein) for implementing the air manager 1102 and other services, applications, or modules in the network environment 1100.
  • the network 1104 includes at least one server 1108 hosting a website or an application that the user may visit to access the air manager 1102 and/or other network components.
  • the server 1108 may be a single server, a plurality of servers with each such server being a physical server or a virtual machine, or a collection of both physical servers and virtual machines.
  • a cloud hosts one or more components of the network environment 1100.
  • the user devices 120, the server 11082, and other resources connected to the network 1104 may access one or more other servers to access to one or more websites, applications, web services interfaces, storage devices, computing devices, or the like that are used for air purification and/or remote monitoring.
  • the server 1108 may also host a search engine that the air manager 1102 uses for accessing, searching for, and modifying data associated with the room air cleaner 102 and/or the users 116.
  • Figures 14-16 show example user interfaces generated by the air manager 1102 and displayed in a browser window of the user device 120 through which access to and interactions with the room air cleaner 102 and related data are provided. It will be appreciated by those skilled in the art that such depictions are exemplary only and not intended to be limiting.
  • user interfaces generated by the air manager 1102 include one or more tabs 1202-1206 to facilitate navigation.
  • the tabs may include a calibrate tab 1202 for navigating to a calibration user interface 1200, a customize tab 1204 for navigating to a customize user interface 1300, and a monitor tab 1206 for navigating to a monitoring user interface 1400. It will be appreciated that more or fewer tabs may be provided.
  • the calibration user interface 1200 include a window 1208 for setting various parameters of one or more room air cleaners.
  • the window 1208 has various fields, including, without limitation, a room dimensions field 1210 for inputing dimensions for the room in which the room air cleaner 102 is place, a room flooring field 1212 for inputing a flooring type (e.g., carpet, rug, hardwood, etc.), and a clean air cycle field 1214 for setting a period of time when the users 116 are likely to be absent. This information would be used by the air manager 1102 and/or the room air cleaner 102 to calculate the necessary flow rate to most effectively clean the air during a clean cycle.
  • a room dimensions field 1210 for inputing dimensions for the room in which the room air cleaner 102 is place
  • a room flooring field 1212 for inputing a flooring type (e.g., carpet, rug, hardwood, etc.)
  • a clean air cycle field 1214 for setting a period of time when the users 116 are likely to be absent. This information would be used by the air manager 1
  • the customize user interface 1300 may be used to customize the user experience of the room air cleaner 102.
  • the customize user interface 1300 includes a window 1302 with fields for setting sounds, such as alarms, music, and/or ambient noise.
  • the fields include, without limitation, a play music field 1304 for playing music, for example, from a library on the user device 120; a play sounds field 1306 for playing ambient noise; a drift field 1308 for creating a period of time in which sounds (e.g., ambient noise) will play to assist in sleep; and a rise field 1310 for creating a wake up alarm.
  • the user 116 can choose the duration of sound play with the fields 1304-1310 and select whether the sounds should be gradually increased or decreased in volume, for example, to assist with falling asleep or waking.
  • Visual and/or tactile stimulation may also accompany the sounds to assist in sleep cycles and/or waking.
  • the speakers 114 permit the room air cleaner 102 to act as a mini home stereo system that can play music directly from the user device 120.
  • the user 116 may select nursery rhymes that play for a predetermined time when a child is put to bed and select a wake up alarm playing a nature sound, such as ocean waves, which begins a very low sound level and increases to normal volume over a period. Therefore, the room air cleaner 102 improves pulmonary health while ensuring that sleep cycles are consistent.
  • the monitoring user interface 1400 may be used to monitor the health of one or more users 116.
  • the monitoring user interface 1400 may include a window 1402 for monitoring a nursery.
  • the window 1402 may, without limitation: display breathing patterns 1404 of a user, such as an infant; issue visual, audio, and/or tactile alarms 146; provide data from one or more input devices 1408 (e.g., a microphone or SIDS monitoring devices); and operate as a baby monitor 1410 to listen to an infant remotely.
  • input devices 1408 e.g., a microphone or SIDS monitoring devices
  • the breathing patterns 1404 may indicate an anomalies, such as exceeding a programed value for frequency or amplitude of cough, indicative of an asthma attack or other respiratory exacerbation.
  • the room air cleaner 102 may trigger two separate alarms: one in the room using the room air cleaner 102 to wake up the child in the event that the child is asleep during the event; and another in the alarms 1406.
  • the alarm on the room air cleaner 102 may only be disabled by pressing a manual control on the room air cleaner 102 to prompt a user to check on the infant. This alarm may be programmed to sound over different intervals and noise levels. Following these intervals, if the alarm is not disabled, the room air cleaner 102 may transmit an emergency distress signal to emergency personnel over the network 1106.
  • example operations 1500 for purifying air in a room are provided.
  • an operation 1502 draws air into a housing through an air intake, and an operation 1504 generates a filtration air flow for the air.
  • An operation 1506 directs the filtration air flow to a surface of at least one primary filter, and an operation 1508 purifies the air by removing UFPs from the air using the at least one primary filter.
  • An operation 1510 generates a recirculation air flow including the purified air, and an operation 1512 outputs the purified air into a room.
  • the computing system 1600 may be applicable to the user device 120, the server 1108, the room air cleaner 102, or other computing devices. It will be appreciated that specific implementations of these devices may be of differing possible specific computing architectures not all of which are specifically discussed herein but will be understood by those of ordinary skill in the art.
  • the computer system 1600 may be a general computing system is capable of executing a computer program product to execute a computer process. Data and program files may be input to the computer system 1600, which reads the files and executes the programs therein. Some of the elements of a general purpose computer system 1600 are shown in Figure 18 wherein a processor 1602 is shown having an input/output (I/O) section 1604, a Central Processing Unit (CPU) 1606, and a memory section 1608. There may be one or more processors 1602, such that the processor 1602 of the computer system 1600 comprises a single central-processing unit 1606, or a plurality of processing units, commonly referred to as a parallel processing environment.
  • I/O input/output
  • CPU Central Processing Unit
  • the computer system 1600 may be a conventional computer, a distributed computer, or any other type of computer, such as one or more external computers made available via a cloud computing architecture.
  • the presently described technology is optionally implemented in software devices loaded in memory 1608, stored on a configured DVD/CD-ROM 1610 or storage unit 1612, and/or communicated via a wired or wireless network link 1614, thereby transforming the computer system 1600 in Figure 18 to a special purpose machine for implementing the described operations.
  • the I/O section 1604 is connected to one or more user- interface devices (e.g., a keyboard 1616 and a display unit 1618), a disc storage unit 1612, and a disc drive unit 1620.
  • user- interface devices e.g., a keyboard 1616 and a display unit 1618
  • disc storage unit 1612 e.g., a hard disk drive, a solid state drive, and a hard disk drive.
  • disc drive unit 1620 is a DVD/CD-ROM drive unit capable of reading the DVD/CD-ROM medium 1610, which typically contains programs and data 1622.
  • Computer program products containing mechanisms to effectuate the systems and methods in accordance with the presently described technology may reside in the memory section 1604, on a disc storage unit 1612, on the DVD/CD-ROM medium 1610 of the computer system 1600, or on external storage devices made available via a cloud computing architecture with such computer program products, including one or more database management products, web server products, application server products, and/or other additional software components.
  • a disc drive unit 1620 may be replaced or supplemented by an optical drive unit, a flash drive unit, magnetic drive unit, or other storage medium drive unit.
  • the disc drive unit 1620 may be replaced or supplemented with random access memory (RAM), magnetic memory, optical memory, and/or various other possible forms of semiconductor based memories commonly found in smart phones and tablets.
  • RAM random access memory
  • the network adapter 1624 is capable of connecting the computer system 1600 to a network via the network link 1614, through which the computer system can receive instructions and data.
  • Examples of such systems include personal computers, Intel or PowerPC-based computing systems, AMD-based computing systems and other systems running a Windows-based, a UNIX-based, or other operating system. It should be understood that computing systems may also embody devices such as terminals, workstations, mobile phones, tablets or slates, multimedia consoles, gaming consoles, set top boxes, etc.
  • the computer system 1600 When used in a LAN-networking environment, the computer system 1600 is connected (by wired connection or wirelessly) to a local network through the network interface or adapter 1624, which is one type of communications device.
  • the computer system 1600 When used in a WAN-networking environment, the computer system 1600 typically includes a modem, a network adapter, or any other type of communications device for establishing communications over the wide area network.
  • program modules depicted relative to the computer system 1100 or portions thereof may be stored in a remote memory storage device. It is appreciated that the network connections shown are examples of communications devices for and other means of establishing a communications link between the computers may be used.
  • the air manager 1102, the controller 112, air purification data, monitoring data, a plurality of internal and external databases, source databases, and/or cached data on servers are stored as the memory 1608 or other storage systems, such as the disk storage unit 1612 or the DVD/CD-ROM medium 1610, and/or other external storage devices made available and accessible via a network architecture.
  • Network outage tracker software and other modules and services may be embodied by instructions stored on such storage systems and executed by the processor 1602.
  • local computing systems, remote data sources and/or services, and other associated logic represent firmware, hardware, and/or software configured to control operations of the air manager 1102, the room air cleaner 102, the user devices 120, the server 1108, and/or other computing units or components of the network environment 1100.
  • Such services may be implemented using a general purpose computer and specialized software (such as a server executing service software), a special purpose computing system and specialized software (such as a mobile device or network appliance executing service software), or other computing configurations.
  • one or more functionalities disclosed herein may be generated by the processor 1602 and a user may interact with a GUI (e.g., interfaces 1200-1400) using one or more user-interface devices (e.g., the keyboard 1616, the display unit 1618, and the user devices 120) with some of the data in use directly coming from online sources and data stores.
  • GUI e.g., interfaces 1200-1400
  • user-interface devices e.g., the keyboard 1616, the display unit 1618, and the user devices 120
  • the system set forth in Figure 18 is but one possible example of a computer system that may employ or be configured in accordance with aspects of the present disclosure.
  • the methods disclosed may be implemented as sets of instructions or software readable by a device. Further, it is understood that the specific order or hierarchy of steps in the methods disclosed are instances of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the method can be rearranged while remaining within the disclosed subject matter.
  • the accompanying method claims present elements of the various steps in a sample order, and are not necessarily meant to be limited to the specific order or hierarchy presented.
  • the described disclosure may be provided as a computer program product, or software, that may include a non-transitory machine-readable medium having stored thereon instructions, which may be used to program a computer system (or other electronic devices) to perform a process according to the present disclosure.
  • a machine-readable medium includes any mechanism for storing information in a form (e.g., software, processing application) readable by a machine (e.g., a computer).
  • the machine-readable medium may include, but is not limited to, magnetic storage medium (e.g., floppy diskette), optical storage medium (e.g., CD-ROM); magneto-optical storage medium, read only memory (ROM); random access memory (RAM); erasable programmable memory (e.g., EPROM and EEPROM); flash memory; or other types of medium suitable for storing electronic instructions.
  • magnetic storage medium e.g., floppy diskette
  • optical storage medium e.g., CD-ROM
  • magneto-optical storage medium e.g., read only memory (ROM); random access memory (RAM); erasable programmable memory (e.g., EPROM and EEPROM); flash memory; or other types of medium suitable for storing electronic instructions.
  • ROM read only memory
  • RAM random access memory
  • EPROM and EEPROM erasable programmable memory
  • flash memory or other types of medium suitable for storing electronic instructions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Air Conditioning Control Device (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

des modes de réalisation de l'invention concernent des systèmes et des procédés de production d'air purifié. Dans un mode de réalisation, un purificateur d'air comprend un boîtier comportant une entrée d'air et une sortie d'air. Au moins un ventilateur de filtration est conçu pour aspirer l'air par l'entrée d'air dans le boîtier et générer un flux d'air de filtration. Un compartiment de filtre est placé à l'intérieur du boîtier et comprend au moins un filtre primaire. Le flux d'air de filtration est envoyé sur une surface du filtre primaire et le ou les filtres primaires retirent les particules ultra-fines de l'air et délivre de l'air purifié. Au moins un ventilateur de recirculation est conçu pour générer un flux d'air de recirculation pour diriger l'air purifié dans la pièce par la sortie d'air.
PCT/US2015/039127 2014-07-02 2015-07-02 Systèmes de purificateur d'air ambiant des et procédés associés Ceased WO2016004399A1 (fr)

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US201462050042P 2014-09-12 2014-09-12
US62/050,042 2014-09-12
US201562104316P 2015-01-16 2015-01-16
US62/104,316 2015-01-16

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JP7777873B2 (ja) 2020-10-16 2025-12-01 文夫 高橋 空気清浄機、空気清浄方法、空気清浄システム
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US12355339B2 (en) 2022-07-18 2025-07-08 Carrier Corporation Hybrid power system for transport refrigeration systems

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