EP4358053A1 - Selbstreinigende rauchmeldervorrichtung und verfahren dafür - Google Patents
Selbstreinigende rauchmeldervorrichtung und verfahren dafür Download PDFInfo
- Publication number
- EP4358053A1 EP4358053A1 EP22201782.4A EP22201782A EP4358053A1 EP 4358053 A1 EP4358053 A1 EP 4358053A1 EP 22201782 A EP22201782 A EP 22201782A EP 4358053 A1 EP4358053 A1 EP 4358053A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dark chamber
- self
- dust
- detector device
- smoke detector
- 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.)
- Pending
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 53
- 238000004140 cleaning Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 14
- 239000000428 dust Substances 0.000 claims abstract description 48
- 239000002245 particle Substances 0.000 claims abstract description 21
- 239000012080 ambient air Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 230000002940 repellent Effects 0.000 claims description 6
- 239000005871 repellent Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
- G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
Definitions
- the present disclosure belongs to the technical field of smoke detectors, and more particularly to self-cleaning smoke detectors, also interchangeably referred to as fire detectors.
- the main operating principle of existing commercial automatic fire detector devices is based on multi-sensorial systems for the detection and measurement of three main fire phenomena: (i) heat, (ii) carbon monoxide, and (iii) smoke.
- the sensorial system for the latter phenomenon typically exploits the Rayleigh light scattering effect to detect the concentration (and possibly the size) of smoke particles in the surrounding environment.
- Document EP1857989B2 providing a fire alarm device e.g. smoke alarm unit, for use in e.g. apartment, has self-testing unit for testing permeability of smoke entrance openings in housing, and sensor for optically and/or acoustically sensing opening.
- the device has a housing and a self-testing unit for testing permeability of smoke entrance openings in the housing.
- a sensor is provided for optically and/or acoustically sensing the opening, where the sensor is a distance sensor and/or light sensor.
- the sensor is arranged in such a manner that a space is formed from the opening up to a fire detection sensor inside the fire alarm device.
- a reference sensor is provided for measuring an ambient light of the fire alarm device.
- An independent claim is also included for a method for testing a functional capability of the fire alarm device.
- Document EP1728224B1 discloses an invention related to a fire detector according to the scattered radiation principle with at least one radiation transmitter and at least one radiation receiver, the radiation paths of which form a scattering volume.
- the fire detector comprises, in addition to at least one first radiation transmitter (5.1) and a first radiation receiver, at least one second radiation transmitter (5.2) and a second radiation receiver, which form at least two locally spaced scattering volumes with their radiation paths.
- the present disclosure discloses a self-cleaning smoke device for detecting a presence of smoke particles in an ambient air within a monitored space.
- the present disclosure is composed of three components: (i) light-emitting sources, e.g., light-emitting diode (LED), for possibly different light wavelengths, (ii) light-sensing receptors, e.g. photodiodes, and (iii) a so-called "smoke chamber", an enclosure to contain the former elements in a dark environment.
- the detection principle is simple: the LEDs send light into the smoke chamber, where it is absorbed by a labyrinth structure; in the event of a fire, smoke particles enter the chamber through small inlet openings, scattering light towards the photodiodes that then convert the quantity of light into a proportional electrical signal.
- a self-cleaning smoke detector device for detecting a presence of smoke particles in ambient air, comprising: preferably at least one emitter for emitting a light with one or more light wavelengths; preferably at least one receiver for providing an output signal of the light received from the emitter; a dark chamber with one or more inlet openings for receiving the smoke particles of the ambient air, preferably within which the emitter and receiver are oppositely mounted for scattering the light towards the receiver and preventing the light from the emitter from being directly received by the receiver; characterized by comprising: a vibration motor coupled to the dark chamber for shaking dust build-up within the dark chamber; at least one outlet opening arranged inside dark chamber, for letting out shaken dust; an electronic data processor configured for actuating the vibration motor for shaking the dust inside the dark chamber.
- the light is preferably visible light with wavelengths between 380 nm and 800 nm and/or ultraviolet light and/or infrared light.
- the outlet opening is placed at a central position in respect of the dark chamber to let out shaken dust from inside dark chamber.
- the outlet opening is placed at a peripheral position in respect of the dark chamber to let out shaken dust from inside dark chamber.
- the outlet opening comprises a meandering channel for reducing an exterior light to enter the dark chamber.
- the meandering channel comprises one or more inclined surfaces for reducing dust build-up.
- said device comprises an additional vibration motor, wherein the two vibration motors are oppositely mounted inside the dark chamber.
- said electronic data processor is further configured for controlling each vibration motor such that only a vibration motor is actuated at a time or both vibration motors are actuated simultaneously.
- said electronic data processor is further configured for changing a vibration frequency of the motor such that only the vibration frequency of the vibration motor is actuated at a time or both vibration frequencies of the vibration motors are changed simultaneously.
- said device comprises a dust repellent coating inside the dark chamber.
- the dust repellent coating is nano-phase silica, titania, oxide, hydrophobic resin with nanometre particulates, or combinations thereof.
- the dark chamber comprises a further electrostatic repulsion circuitry for reducing dust build-up inside the dark chamber and the electronic data processor is further configured for actuating the electrostatic repulsion circuitry for reducing dust build-up inside the dark chamber.
- the vibration motor is an eccentric rotating mass vibration motor or a piezoelectric vibrator.
- the vibration motor is coupled to the dark chamber (2) for shaking dust build-up on the emitter and/or receiver.
- said dark chamber comprises a further electrostatic repulsion circuitry for reducing dust build-up inside the dark chamber and the method further comprises the step of the electronic data processor actuating the electrostatic repulsion circuitry for reducing dust build-up inside the dark chamber.
- said dark chamber comprises an additional vibration motor, wherein the two vibration motors are oppositely mounted inside the dark chamber (2) and the method further comprises the step of the electronic data processor controlling each vibration motor such that only a vibration motor is actuated at a time or both vibration motors are actuated simultaneously.
- the present disclosure relates to a self-cleaning smoke detector device for detecting a presence of smoke particles in an ambient air within a monitored space.
- Figure 1 presents an overview of some of the main components of the present disclosure for a self-cleaning smoke chamber.
- the cornerstone of the solution is the attachment to the smoke chamber body of eccentric rotating mass vibration motors, similar to those widely found in the haptic systems for smartphones, or piezoelectric vibrators 1.
- the attachment of two units allows for the generation of alternate vibration patterns (e.g. motor 1 only -> motor 2 only -> both motors simultaneously).
- the vibration frequency can be dynamically changed. By combining patterns and vibration frequencies, particles of different sizes and mass can be loosened up from the multiple surfaces inside the smoke chamber.
- the smoke chamber 2 must be designed so there are no perfectly flat walls and surfaces that can collect and trap the loosen dust particles. Additionally, these surfaces guide the particles into the lower levels of the chamber and into specialized outlet holes 3.
- two possible chamber designs are proposed ( Figure 1 and Figure 2 ).
- loosen dust particles slide from the lateral surfaces into multiple holes around the lower surface circumference.
- the lower surface chamfers from the middle to the edge outlet holes so particles falling, for example, from the middle of the chamber also slide into the outlets.
- a single outlet hole is placed in the middle of the chamber. The lower surface also chamfers towards the hole. Note that all outlet holes may require a light trapping labyrinth structure to reduce the amount of exterior light entering the chamber.
- the interior of the smoke chamber is treated with a dust repellent coating.
- the dust repellent coating consist of nano-phase silica, titania, or other oxide coatings.
- the chamber walls might be lined with an electrostatic repulsion circuitry for more demanding environments.
- Figure 1 shows an embodiment, comprising: at least one emitter for emitting a light with one or more light wavelengths; at least one receiver for providing an output signal of the light received from the emitter; a dark chamber 2 with one or more inlet openings 2 for receiving the smoke particles of the ambient air, within which the emitter and receiver are oppositely mounted for scattering the light towards the receiver and preventing the light from the emitter from being directly received by the receiver; characterized by comprising: a vibration motor coupled to the dark chamber 2 for shaking dust build-up; at least one outlet opening 3 arranged inside dark chamber 2, for letting out shaken dust; an electronic data processor configured for actuating the vibration motor for shaking the dust inside the dark chamber 2.
- Figure 2 shows an embodiment, wherein the outlet opening 3 is arranged to be placed at a peripheral position to let out shaken dust inside dark chamber 2.
- the outlet opening 3 is arranged to be placed at a central position to let out shaken dust inside dark chamber 2.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22201782.4A EP4358053A1 (de) | 2022-10-17 | 2022-10-17 | Selbstreinigende rauchmeldervorrichtung und verfahren dafür |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22201782.4A EP4358053A1 (de) | 2022-10-17 | 2022-10-17 | Selbstreinigende rauchmeldervorrichtung und verfahren dafür |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4358053A1 true EP4358053A1 (de) | 2024-04-24 |
Family
ID=83898073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22201782.4A Pending EP4358053A1 (de) | 2022-10-17 | 2022-10-17 | Selbstreinigende rauchmeldervorrichtung und verfahren dafür |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP4358053A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3681603A (en) * | 1969-05-19 | 1972-08-01 | Cerberus Ag | Smoke detector with at least one smoke measuring chamber |
EP1728224B1 (de) | 2004-01-13 | 2012-05-30 | Robert Bosch Gmbh | Brandmelder mit mehreren untersuchungsvolumina |
EP1857989B2 (de) | 2006-05-17 | 2012-10-24 | Techem Energy Services GmbH | Brandwarnmelder und Verfahren zur Überprüfung dessen Funktionsfähigkeit |
JP5357955B2 (ja) * | 2011-12-09 | 2013-12-04 | 大阪瓦斯株式会社 | 警報装置 |
US20210302303A1 (en) * | 2020-03-30 | 2021-09-30 | Carrier Corporation | Cleaning system for a smoke detector |
-
2022
- 2022-10-17 EP EP22201782.4A patent/EP4358053A1/de active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3681603A (en) * | 1969-05-19 | 1972-08-01 | Cerberus Ag | Smoke detector with at least one smoke measuring chamber |
EP1728224B1 (de) | 2004-01-13 | 2012-05-30 | Robert Bosch Gmbh | Brandmelder mit mehreren untersuchungsvolumina |
EP1857989B2 (de) | 2006-05-17 | 2012-10-24 | Techem Energy Services GmbH | Brandwarnmelder und Verfahren zur Überprüfung dessen Funktionsfähigkeit |
JP5357955B2 (ja) * | 2011-12-09 | 2013-12-04 | 大阪瓦斯株式会社 | 警報装置 |
US20210302303A1 (en) * | 2020-03-30 | 2021-09-30 | Carrier Corporation | Cleaning system for a smoke detector |
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