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WO2022187921A1 - Capteur de dioxyde de carbone et ventilateur de renouvellement de l'air ambiant - Google Patents

Capteur de dioxyde de carbone et ventilateur de renouvellement de l'air ambiant Download PDF

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Publication number
WO2022187921A1
WO2022187921A1 PCT/BR2022/050069 BR2022050069W WO2022187921A1 WO 2022187921 A1 WO2022187921 A1 WO 2022187921A1 BR 2022050069 W BR2022050069 W BR 2022050069W WO 2022187921 A1 WO2022187921 A1 WO 2022187921A1
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WO
WIPO (PCT)
Prior art keywords
air
carbon dioxide
fan
external
environment
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/BR2022/050069
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English (en)
Portuguese (pt)
Inventor
Jose Marcos NABHAN
Vinicius BATISTELA NICOLETTI
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2022187921A1 publication Critical patent/WO2022187921A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide

Definitions

  • the harmful effects are mainly caused by particles suspended in the air, of which the thickest are retained in the nose and throat, causing discomfort, irritation in the eyes, nostrils, in addition to facilitating the installation of diseases in the body, such as the flu. , allergic rhinitis, bronchitis and asthma.
  • the gas Periodically inhaled, the gas is not harmful. However, as it is physiologically active and capable of affecting the circulatory and respiratory systems, concentrations of 2% to 3% have the potential to cause symptoms of asphyxia, drowsiness and vertigo; 3% to 5% can cause rapid breathing, headache and burning of the nose and throat; and up to 15%, headache, excitement, excessive salivation, nausea, vomiting and loss of consciousness.
  • the present disclosure proposes a ventilation device driven by a sensor of harmful concentrations of C0 2 specifically designed to be installed in closed spaces, having the renewal of ambient air and the consequent dilution of particles suspended in the air to levels not harmful to human health as an effect.
  • Air-conditioned environments are increasingly common and necessary today, even in homes, especially in bedrooms and living rooms, where conditioning equipment is provided for since the architectural projects.
  • Document US1999027788 with filing date of 11/23/1999 discloses a sensor for the detection of gases, comprising a housing and an active element disposed inside the housing.
  • the active element is surrounded by a porous insulating material with a bulk density not exceeding 0.15 g/cm A 3 A .
  • Another gas sensor comprises an active element surrounded by a porous insulating material having a surface area not exceeding approximately 200 m A 2 A /cm A 3 A .
  • Another gas sensor comprises a copper compound positioned so that the gas comes into contact with the copper compound before contacting the active element.
  • Another gas sensor comprises an active element surrounded by a porous material having an average pore size of at least approximately 100 ⁇ 134>.
  • the document DK2005000381 with filing date of 06/10/2005 discloses "IR sensor (1), especially a C0 2 sensor, with a filter arrangement (6), behind which an detector (7), and an evaluation device (8) which is connected with the detector arrangement (7), the filter arrangement (6) having a first filter (9) and a second filter (10) which are configured as passband filters and which each have one pass and of which the first filter (9) allows a predetermined IR band to pass and the second filter (10) does not, and the detector arrangement has two detectors (14, 15), each of which is combined with a filter (9, 10).
  • the aim is to simplify the application of such an IR sensor.
  • the passband of a filter (10) is arranged inside of the passband of the other filter (9) and the evaluation device (8) takes a difference in the signals (S1, S2) of the detectors (1 4,15) and adapts it to the signal (S1) of a detector (14)".
  • BRPI0601721 -5A2 with deposit date on 05/04/2006, teaches "a process of determining ozone in the atmosphere, through spectrophotometric and spectrofluorimetric measurements, using filters impregnated with indigo blue to collect the gas. at 600nm, the process most commonly described in the literature, were significantly sensitive to the action of interferences, compared to measurements made at 250nm. These data allow us to conclude that more reliable determinations of ozone are obtained in the ultraviolet region. Using the process whose determination is spectrofluorimetric, the measurements were quite sensitive, since it is possible to distinguish between close concentrations, which are often not differentiated by the spectrophotometric process. In addition, the selectivity was also superior to the technique spectrophotometric analysis, since there was no interference from any other gaseous species, even when present in a concentration much higher than that of ozone".
  • the document IB2010051043 with filing date on 03/10/2010, under the title "GAS SENSING USING ULTRASOUND”, deals with "a sensor chip (1030) for gas, equipped with cells (200) to emit and receive ultrasound and is configured for a sufficiently large frequency range and to measure the concentration of at least one of the gas components based on at least two responses within the range.
  • the frequency range can be achieved by varying the size of cell membranes (230) by varying the polarization voltages and/or varying the air pressure.
  • the sensor chip can be applied, for example, in capnography.
  • a measuring air chamber (515) is implemented in the airway (400) and it and/or the pathway can be designed to reduce turbulence in the exhaled breath (120) subject to ultrasound interrogation.
  • the chip (1030) can be implemented as a standalone monitoring device. parameters, avoiding the need for off-chip sensors".
  • Another embodiment of the invention also provides a method for To calibrate an air sensor of an air handling device. The method comprises the steps of: purifying the air using the air handling device; and measuring a first amount of air using the air sensor to obtain a first value in order to calibrate the air sensor, wherein the first amount of air comprises purified air".
  • the present invention also relates to a system comprising such a chemo-optical sensor, as well as a method for conditioning a chemo-optical sensor unit to measure a concentration of a gas and a conditioned sensor thereby obtained. .
  • a security system for vehicle occupants includes a carbon dioxide (C0 2 ) sensor and a controller.
  • the C0 2 sensor is configured to determine a concentration of C0 2 in a passenger cabin of the vehicle while the vehicle is not in operation, i.e. parked.
  • the controller is configured to determine that the passenger cabin is occupied by an occupant based on the concentration of C0 2 in a passenger cabin while the vehicle is not in operation.
  • the system may respond by activating a means of notification such as a vehicle horn or alarm, or by venting the passenger cabin, opening the windows, or operating a ventilation fan. a vehicle HVAC system" (free translation).
  • the document EP2011068984 refers to the process of air purification, not renewal, and does not specify the environment of use, that is, whether indoors or in the atmosphere, while document EP2014061811 alludes to transcutaneous measurement of a gas concentration.
  • a security system is provided for closed environments, notably where there is a meeting or prolonged stay of people, such as offices, bedrooms and auditoriums, for example, which includes a carbon dioxide sensor (C0 2) that , one time detecting potentially dangerous concentrations, it activates a fan that promotes the renewal of ambient air, exhausting the external air to the interior of the enclosure, promoting the exchange of ambient air through a physical passage that can be installed on an external wall (4) of enclosures or any buildings, on the roof (6) or on the pre-existing air conditioning unit in common use.
  • C0 2 carbon dioxide sensor
  • the sensor is configured to detect the presence of C0 2 in harmful concentration, as is more clearly seen from the Detailed Description of the preferred embodiment and with reference to the following drawing examples.
  • Figure 1 shows in detail the device (1) equipped with a carbon dioxide sensor (2) and an external exhaust fan (3), that is, which exhausts the air from the external environment to the internal environment, basically configured in a through hole, installed in one of the external walls (4) of any room or building, approximately at the height of the window (5).
  • Figure 2 shows the device (1) embedded in a compartment (7) from which a duct (8) is projected for the exhaustion of external air to the internal environment, installed on the ceiling (6) of any room or building .
  • the same figure offers a highlight of the construction of the external exhaust fan (3), in which a plurality of holes (3') are provided for the exhaust of external air to the internal environment through said duct (8).
  • Figure 3 refers to the device (1) in a constructive alternative in which a suction chamber (9) and respective duct (10) are foreseen, whose suction function is determined by a plurality of fans (3) that promote the exhaust air to the internal environment, preferably installed in parallel in the upper portion of said suction chamber (9).
  • Figure 4 shows the device (1) when installed in a pre-existing dimatizing device (11), installed on one of the external walls (4) of any room or building, where the carbon dioxide sensor (2) can be seen and, in detail, the preferential positioning of the fan (3) that exhausts the air from the external environment to the internal environment of the enclosure, that is, shipped in a chamber (12) equipped with a filter (13).
  • Figure 1 illustrates a non-limiting example of a device (1) for renewing indoor air from the exchange of ambient air, configured to determine concentrations at pre-established levels and which includes a carbon dioxide sensor (2) (C0 2) and fan (3) for suction of external air that is exhausted to the internal environment, promoting air renewal and the consequent dilution of suspended particles of carbon dioxide detected in this environment.
  • a carbon dioxide sensor (2) C0 2
  • fan (3) for suction of external air that is exhausted to the internal environment, promoting air renewal and the consequent dilution of suspended particles of carbon dioxide detected in this environment.
  • Suitable C0 2 sensors that use a version of spectroscopy or a surrogate to measure the concentration of C0 2 gas are available in the state of the art, and the device object of the present report takes advantage of the reliability of this type of C0 2 detection in a way that that can be installed on external walls or on the ceiling (6) of any room or building.
  • the device (1) is equipped with a carbon dioxide (C0 2 ) sensor (2) configured to detect potentially harmful concentrations of the gas and trigger a suction mechanism that, by means of a fan (3), it promotes the exhaustion of the external air to the interior of the room and, therefore, the renewal of the air, preferably installed in one of the external walls (4) of any room or building, as well as in the preexisting dimatizing device (11), as shown in fig. . 4, configuration in which the external exhaust fan (3) is embedded in a chamber (12) provided with a filter (13).
  • C0 2 carbon dioxide
  • a suction mechanism that, by means of a fan (3), it promotes the exhaustion of the external air to the interior of the room and, therefore, the renewal of the air, preferably installed in one of the external walls (4) of any room or building, as well as in the preexisting dimatizing device (11), as shown in fig. . 4, configuration in which the external exhaust fan (3) is embedded in a chamber (12) provided with a filter (13).
  • the device (1) is provided with an external exhaust fan (3) in which a plurality of holes (3') are provided, so that the device (1) can be installed on the ceiling (6) ) of the building, in which case the external air is exhausted to the interior of the enclosure through a duct (8) that projects from the compartment (7).
  • the device (1) may include a suction chamber (9) with greater exhaust capacity that operates through a plurality of fans (3) that promote the exhaustion of external air into the interior of the enclosure. , preferably installed in parallel.
  • the device (1) can be installed on one of the external walls (4) or on the ceiling (6) of the building, thanks to the duct (10) that connects the suction chamber (9) to the external wall (4) or to the slab or ceiling (6).
  • the device (1) is equipped with a serial interface to communicate with external devices, via Bluetooth, internet or a substitute, such as smartphones, tablets or desktops, for example, in order to integrate if aea become interactive with them, in such a way that the user can change or monitor the settings of the device (1) when and if necessary, whether or not in the premises.
  • the sensor (2) will indicate on display the value of this concentration (ppm). If the concentration is greater than 1000 ppm, the sensor (2) will activate the external exhaust fan (3) whose action will displace the external air, by exhaustion, into the environment, thus providing the dilution of suspended particles of dioxide, renewing the air in the indoor environment.
  • figures 1, 2 and 3 illustrate non-limiting examples of device installation (1) indoors, which includes a C0 2 sensor (2), and may include a duct (8), which projects from the compartment (7), or a suction chamber (9) configured to suck in external air by means of a plurality of exhaust fans (3), preferably installed in parallel.
  • FIG. 1 proposes that the device be installed on an external wall (4) of any building, consisting of a simple mechanism for passing the exhausted air from the outside to the interior of the enclosure, in order to dilute it in this any concentration of dioxide that is potentially harmful, or an exhaust chamber (9) operated by means of a plurality of fans (3) preferably installed in parallel.
  • the example of figure 2 proposes that the device (1) be installed on the ceiling (6) of any building, preferably equipped with a conductor (8) for the exhaustion of external air to the internal environment, installed on the ceiling (6) of any room or building.
  • the example in Figure 4 proposes the device (1) coupled to a dimatizing device (11) in common use, configuration in which the external exhaust fan (3) is embedded in a chamber (12), in turn equipped with a filter (13) to the exhausted air from outside.
  • the device is designed to be used in an enclosed space, which may be an office, a bedroom or an auditorium, for example, and may include an unproven processor such as a microprocessor or other control circuitry.
  • Such circuits may be analog or digital, including application-specific integrated circuits (ASIC) for data processing, as is known to a person skilled in the art, including and primarily for communication with external devices, via Bluetooth, the internet or the like, such as such as smartphones, tablets or desktops, for example, integrating and interacting with them in such a way that the user can change or monitor device settings d).
  • ASIC application-specific integrated circuits
  • Sensor (2) may include non-volatile memory, such as electronically erasable reprogrammable read-only memory (EEPROM) to store one or more routines, thresholds, and captured data.
  • EEPROM electronically erasable reprogrammable read-only memory

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Ventilation (AREA)

Abstract

L'invention concerne un capteur de dioxyde de carbone et un ventilateur de renouvellement de l'air ambiant que complète un dispositif (1) pourvu d'un capteur (2) pour la détection de concentrations nocives en dioxyde de carbone (CO2) qui favorise le renouvellement de l'air ambiant de locaux fermés au moyen de l'activation d'au moins un ventilateur (3) d'extraction installé dans une paroi (4) externe, sur le toit (6) de bâtiments quelconques ou accouplé à des climatiseurs (11) d'usage courant.
PCT/BR2022/050069 2021-03-06 2022-03-04 Capteur de dioxyde de carbone et ventilateur de renouvellement de l'air ambiant Ceased WO2022187921A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR202021004294-5U BR202021004294U2 (pt) 2021-03-06 2021-03-06 Sensor de dióxido de carbono e ventilador de renovação ambiente
BRBR2020210042945 2021-03-06

Publications (1)

Publication Number Publication Date
WO2022187921A1 true WO2022187921A1 (fr) 2022-09-15

Family

ID=83226066

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2022/050069 Ceased WO2022187921A1 (fr) 2021-03-06 2022-03-04 Capteur de dioxyde de carbone et ventilateur de renouvellement de l'air ambiant

Country Status (2)

Country Link
BR (1) BR202021004294U2 (fr)
WO (1) WO2022187921A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022355A1 (fr) * 1998-10-15 2000-04-20 Daikin Industries, Ltd. Dispositif de climatisation
US20140099872A1 (en) * 2012-10-05 2014-04-10 Mitsubishi Electric Corporation Ventilation system, ventilation method, ventilation control device, and non-transitory computer-readable recording medium
BRMU8700496U2 (pt) * 2007-05-11 2015-11-03 Sandro Ivalcio Rocha renovador e climatizador de ar acoplável à janelas
US20170350610A1 (en) * 2014-12-22 2017-12-07 Levivent Ab A system and method for control of in-door ventilation
WO2019186527A1 (fr) * 2018-03-29 2019-10-03 Aura Smart Air Ltd Dispositif de gestion de qualité de l'air, système de contrôle de qualité de l'air et procédé de contrôle de qualité de l'air
US20190383505A1 (en) * 2018-06-15 2019-12-19 Gongzone S&T Co., Ltd. Window-type smart air purifying ventilator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022355A1 (fr) * 1998-10-15 2000-04-20 Daikin Industries, Ltd. Dispositif de climatisation
BRMU8700496U2 (pt) * 2007-05-11 2015-11-03 Sandro Ivalcio Rocha renovador e climatizador de ar acoplável à janelas
US20140099872A1 (en) * 2012-10-05 2014-04-10 Mitsubishi Electric Corporation Ventilation system, ventilation method, ventilation control device, and non-transitory computer-readable recording medium
US20170350610A1 (en) * 2014-12-22 2017-12-07 Levivent Ab A system and method for control of in-door ventilation
WO2019186527A1 (fr) * 2018-03-29 2019-10-03 Aura Smart Air Ltd Dispositif de gestion de qualité de l'air, système de contrôle de qualité de l'air et procédé de contrôle de qualité de l'air
US20190383505A1 (en) * 2018-06-15 2019-12-19 Gongzone S&T Co., Ltd. Window-type smart air purifying ventilator

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