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WO2023034367A1 - Foyer incorporant des éléments de sécurité - Google Patents

Foyer incorporant des éléments de sécurité Download PDF

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Publication number
WO2023034367A1
WO2023034367A1 PCT/US2022/042134 US2022042134W WO2023034367A1 WO 2023034367 A1 WO2023034367 A1 WO 2023034367A1 US 2022042134 W US2022042134 W US 2022042134W WO 2023034367 A1 WO2023034367 A1 WO 2023034367A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
fire pit
sensor
gas
source connector
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/US2022/042134
Other languages
English (en)
Inventor
Venkataramu BANGALORE
Luo PINYIN
Han PINYIN
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.)
Noble House Home Furnishings LLC
Original Assignee
Noble House Home Furnishings LLC
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 Noble House Home Furnishings LLC filed Critical Noble House Home Furnishings LLC
Publication of WO2023034367A1 publication Critical patent/WO2023034367A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/002—Stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/122—Arrangement or mounting of control or safety devices on stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/18—Detecting fluid leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/02—Space-heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion

Definitions

  • This invention relates to fire pits and gas burning grills, as well as related gas burning appliances for general household and personal use. More specifically, the invention relates to appliances which burn gas, at home mainly but also for commercial or industrial use, and which incorporate therein safety features and properties which may help to prevent or reduce accidents or damage that can result when the appliance malfunctions or otherwise releases flammable gasses with sometimes catastrophic consequences.
  • the invention may include various sensors which cause the appliance to shut down or switch off when a given situation is detected, so as prevent further adverse consequences.
  • a modem day fire pit is a sophisticated gas or wood burning structure which may be constructed from brick, metal, concrete or other materials.
  • fire pits which include features and components whose main purpose is to prevent spreading of fire.
  • These fire pits are used mainly as an outdoor leisure product.
  • these fire pits may use natural gas, propane gas or bio-methanol as the form of fuel.
  • the fuel burns to heat, for example, glass pebbles or lava rock situated in the fire pit in order to produce an artificial effect of intense heat.
  • Many homeowners today are using fire pits for warmth, entertainment and cooking, or simply as focal points for use and to create ambience in an outdoor living space.
  • the fire pits which are generally available may be operated either manually by using simple lighters or matches, or they may be more sophisticated in that they utilize auto ignition systems. However, no matter how they may be ignited, they come with plenty of potential problems. Lately, there have been instances of these fire pits causing severe burn injury and sometimes leading to a catastrophic disasters. These result mainly from the lack of safety protocols, or that the design of the fire pit does not include or encompass built in safety mechanisms. In many cases, fire pit accidents may could be due to the ignorance or even the carelessness of the end user, who may not be taking the appropriate precautions. Some of these disasters include or may result from gas leaks, gas explosions, or even flying lava rocks due to humidity or other atmospheric conditions.
  • One of the purposes of the present invention is to avoid and mitigate these types of accidents or disasters.
  • the features of the invention may additionally be used to help the end user to operate the product safely in a more mindful and sophisticated way, and, furthermore, cater for situations where unexpected accidents may occur.
  • the present invention therefore is configured with simplicity in mind as far as the end user is concerned with inclusion of safety features which are operative at all times and are designed to shut off the system, including flow of gas, at very early stages or potential problems and preferably before any major consequence can occur.
  • safety features which are operative at all times and are designed to shut off the system, including flow of gas, at very early stages or potential problems and preferably before any major consequence can occur.
  • Several key aspects of the operation of the fire pit are monitored continuously by the invention so that aberrant or unusual conditions which may arise at any one source can detected very soon and the system shut down to avoid further problems.
  • the product of the invention may come pre-assembled with the base and ignition system.
  • a quick coupling valve or component for connecting to the gas tank or cylinder or other gas source at one point, and to the ignition system or burners of the fire pit, or other appliance, so as to integrate and effect a connection between the fuel source with the fire pit.
  • the fuel source can be a propane gas tank, natural gas or bio-methanol, as examples, but are not limited to these sources or fuel types.
  • a plurality of lava rocks are then placed on top of the ignition system where the fuel will be discharged and ignited. Now the product is ready for use.
  • the lava rocks give character or ambience or an atmosphere to the fire pit, as is the present case, and also retain heat from the burners so that such heat is more efficiently retained and spread more evenly to provide warmth and effect.
  • the system can be operated either remotely using, for example, WiFi, BluetoothTM, cellular or radio frequency or infra-red devices. During the operation of the fire pit, the intensity of the heat can be adjusted again using the RF, cellular, infra-red or other suitable connections or devices.
  • the controller or other components of the system may provide any selected output which maybe in the form of, for example, a blinking or stationary light, a sound or the like.
  • the system may incorporate a reset capability as part of its properties.
  • the fire pit using the controller can, in one form of the invention, be connected or connectable to a solar power source, or to an energy bank or to any power outlet including conventional AC or DC power sources, to charge the battery which may be required to operate and run the controller or the ignition system, or other components which may need power, intermittent or otherwise, in order to function.
  • the system may further include at least one gas sensor, such as a gas sensor 1 (MQ9-1) and gas sensor 2 (MQ9-2), and these may be connected serially, or in another manner, to the controller and ignition source.
  • the gas sensor MQ9-1 may preferably be connected fairly close to the fuel source, while the gas sensor MQ9-2 maybe connected near the ignition source. In this way, the ability to sense gas at multiple locations, particularly locations where the first sign of unburned gas may be present or anticipated, on or in the system is provided so that the safety of the system as a whole is significantly improved as a result of such monitoring.
  • the invention is not limited to the number of sensors. There may be only one sensor, or there may be more than two sensors.
  • the gas sensor MQ9-1 will sense the presence of gas and send a signal to the controller relating to this situation.
  • the controller may respond by immediately sending a signal to the ignition system to turn off the ignition, and/or close off all the gas supply lines and sources.
  • another signal may be sent to the output in the form of a sound through an associated speaker or as a blinking red or green light which is displayed.
  • the invention may include the ability to send a text message or some other form of message or communication to any cellular device or portable electronic device or even a computer which may have been registered to this specific fire pit.
  • the controller is also capable of storing these events with a date and time stamp for further evaluation, and for record purpose so that if these occur with some frequency, the owner may be alerted to a more fundamental problem in the system which may require a more comprehensive inspection.
  • the data can be downloaded from the controller using for example a standard USB port, or by WiFi transmission, but the invention is not limited to these options.
  • the gas sensor MQ9-2 is preferably connected near the ignition system. As the gas cloud is formed in the situation as described above, the gas sensor MQ9-2 will send a signal to the controller to shut off the ignition.
  • the signal may also cause the controller to shut off all gas supply sources and close off gas supply lines.
  • An immediate signal in the form of sound to a speaker or blinking red and green display of light on the fire pit may be activated, and a text or call may be initiated to the cellular device or other electronic device as mentioned above, and which has been registered to this specific fire pit.
  • the existence of a hazardous condition is thereby relayed to a person in case no one is present at the fire pit when the dangerous condition arises, or the people present are not familiar with the action which may need to be taken in the circumstances.
  • the product is burning and left unattended, there may be provided one or more proximity or motion sensors which may be mounted on the sides of the fire pit, or positioned elsewhere, even off the fire pit itself, and which may be able to detect the absence of any human motions and their presence. This type of detection may happen if one or more than one of the sensors senses the absence of human motions. In this situation, the system is able to trigger a message to turn off or reduce the flow of the gas or fuel supply. This in turn shuts of the fire. There is a timing for these sensors to trigger a message which is controlled by the controller.
  • the sensors may first send a message to a preprogrammed phone or other device to give an operator the ability to override such a shutoff where it is not desired.
  • the system may also be able to shut down gradually over a period of type during which no human presence or motions are detected.
  • the system may also include wind sensors or moisture sensors which are able to shut down the gas supply and ignition when the ambient wind conditions may make it risky or dangerous for the fire pit to continue operating, or moisture from rain or other sources may douse the flames and cause gas leakage, so as to prevent damage from occurring in adverse weather conditions.
  • the present invention may also provide data regarding the health and condition of the product, or certain critical components thereof, and this may include alerts at the time for carrying out preventive maintenance, or at selected intervals between periodic maintenance where simple inspection or basic cleaning is recommended.
  • the fire pit in accordance with the invention may be able to set a timer to turn the system ON or OFF, and run for a selected or a defined time interval.
  • the system may also be programmed in a conservation manner such that as the time to shut off approaches and gets closer to the set time OFF, the fuel supply is adjusted accordingly by decreasing the flow so that unnecessary heat is not generated, which takes time to dissipate after the system is OFF. This helps to manage the fuel efficiently.
  • Indicators may be provided, such as lights or sound emissions which display the progress of shutting down and firing up so alert the users as the changing conditions and output of the device.
  • the fuel outlet comprises a plurality of apertures formed in a recessed receptacle.
  • the recessed receptacle may accommodate lava rocks positioned therein to be heated by burning fuel discharging at the plurality of apertures, and may be a generally circular shaped tray with the plurality of apertures located at or near a periphery thereof.
  • a heating device comprising: a fuel source connector; at least one fuel outlet; a fuel conduit for conveying fuel from the fuel source connector to the fuel outlet; at least one sensor for detecting the presence of unburned fuel outside the fuel conduit; and a fuel control mechanism for modulating the conveyance of fuel when the at least one sensor detects the presence of selected materials.
  • the selected materials may comprise one or more of carbon monoxide, benzene, alcohol, NOx, NH3, smoke or a combination of two or more of such gases.
  • a method of making a fire pit comprising: providing a fuel source connector; providing at least one fuel outlet; connecting a fuel conduit for conveying fuel from the fuel source connector to the fuel outlet; locating at least one sensor for detecting the presence of unbumed fuel outside the fuel conduit; and providing a fuel control mechanism for stopping or modulating the conveyance of fuel when the sensor detects the presence of selected materials.
  • Figure 3 is a perspective view of a fire pit which has a propane gas cylinder as the fuel source, with the propane tank in the uninstalled position;
  • FIG. 2 of the drawings is similar to that in Figure 1, but the lava rocks 36 have been removed to better show the recessed area 30 and its components.
  • a thermocouple 38 or other type of temperature sensor for measuring the temperature and amount of heat at its location.
  • the thermocouple 38 will relay information to a controller 42 (such as shown in Figure 7 of the drawings) located within the housing 12 (or elsewhere), and the system will be programmed to react to information from the thermocouple 38 such as by shutting off gas supply when the heat exceeds a predetermined level.
  • FIGs 3 and 4 illustrate the insertion, or removal, process for a propane gas tank 60 in the interior space 26 of the housing 12.
  • the door 20 is opened or removed depending on its form of attachment as seen in Figure 3, and the gas cylinder 60 placed on a receiving portion 62 of the base 14 inside the housing 12.
  • a QCC quick coupling valve 64 is then connected to the outlet of the gas cylinder 60 and tightened appropriately.
  • the valve 64 attaches to a hose 66 at one end thereof, and the hose 66 at its other end connects to gas conduit piping 68 which conveys gas from the gas cylinder 60 to the gas holes 52 in the recessed area 30, as described above.
  • Figure 5 of the drawings illustrates the propane cylinder 60 installed inside the housing 12. This figure also illustrates the position of gas sensor MQ9 #1 70 which senses for the presence of unburned gas at and around the connection between the valve 64 and gas cylinder 60. As will be described, this gas sensor 70 communicates with the controller 42, and if gas from a leak is detected by the gas sensor 70, shut down or remedial action to prevent or reduce the effects of a dangerous condition are set in motion, thereby alleviating the or removing the condition.
  • the gas sensor 80 is able to detect the presence of unburned gas in the area that may be leaking from the gas holes 52 without being ignited, a potentially dangerous condition, since the build up of unburned gas is liable to explode and also, since it may near odorless and invisible, hazardous to those breathing the air in the vicinity of the fire pit.
  • sensors there maybe additional sensors arranged in various locations between the gas connection to the propane tank and the discharge gas holes 52, in order to improve gas leak detection. Further, there may be sensors arranged around the fire pit in certain positions to detect the presence of unburned gas which may not necessarily have been detected or which are present along the gas feed line. Sensors outside the housing of the fire pit may be included in this embodiment.
  • Figure 7 is a chart or table showing the electronics and operational steps of the safety systems built into the fire pit 10 of the invention.
  • the controller 42 is programmed to control these features, and receives input from the gas sensors 70 and 80.
  • the system may be shut down in response to signals from these sensors regarding the presence of unbumed gas, when exceeding levels not considered to be safe.
  • the controller 42 also monitors the valve 64 which may be opened and closed through the use of a switch 88 or other hardware.
  • the controller 42 may also connect to the IOT at 90. Further, information as to temperature is received from the thermocouple 38 so that appropriate action can be taken when temperatures reach unacceptable levels which may create dangerous conditions.
  • the controller 42 maybe powered by one or a combination of sources, such as a battery 92 which can be powered from several different sources.
  • the system may include an auto ignition switch 100 for use by the owner to generate a spark at the point of exit of the gas, at the gas holes 52, to initiate the burning of gas and heating process.
  • controller may also be programmed to send messages, such as through a Bluetooth connected device or through an internet Wi-Fi connection to a remote electronic device such as a smart phone to warn users or owners or others about the condition of the fire pit 10 when monitors detect a dangerous condition evolving.
  • controller 42 Various input devices to the controller 42 are illustrated, including power bank, adapter, solar energy connector and USB plug or port.
  • a fire pit comprising a housing, a source of gas, a burn recess area where gas is ignited and burned, and safety devices and monitors to monitor levels of heat and unburned gas.
  • the safety devices may include gas sensors. These gas sensors are preferably located at the point where a gas connection connects to a source of gas in the housing, and the point or points where gas is discharged into the burn recess area. A plurality of gas holes may be positioned in the burn recess area through which such gas is discharged.
  • the source of gas is a propane gas tank which is located in the housing and can be removed and replaced when the gas in the gas tank has been depleted.
  • the safety devices may further include a thermocouple, preferably place near gas holes, to monitor temperate and take appropriate action when temperature levels increase to undesirable or dangerous readings.
  • the fire pit of the invention further may comprise a controller for receiving information from the system including the safety devices, and which can take action in certain circumstances to mitigate danger, provide audible or visual warnings on conditions, or send messages to remote electronic devices to warn others who may not be in the vicinity of the fire pit that a hazardous situation is developing or has been reached.
  • “plurality” means two or more. As used herein, a “set” of items may include one or more of such items.
  • the terms “comprising”, “including”, “carrying”, “having”, “containing”, “involving”, and the like are to be understood to be open-ended, i.e., to mean including but not limited to. Only the transitional phrases “consisting of’ and “consisting essentially of’, respectively, are closed or semi-closed transitional phrases with respect to claims.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Emergency Alarm Devices (AREA)
  • Fire Alarms (AREA)

Abstract

Un foyer comprend un raccord de source de combustible et au moins une sortie de combustible. Un conduit de combustible transporte le combustible du raccord de source de combustible à la sortie de combustible, et il y a au moins un capteur pour détecter la présence de combustible non brûlé à l'extérieur du conduit de combustible. En outre, le foyer comporte un mécanisme de régulation de combustible pour arrêter ou moduler le transport de combustible lorsque le capteur détecte la présence de combustible non brûlé.
PCT/US2022/042134 2021-09-01 2022-08-31 Foyer incorporant des éléments de sécurité Ceased WO2023034367A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202163239611P 2021-09-01 2021-09-01
US63/239,611 2021-09-01

Publications (1)

Publication Number Publication Date
WO2023034367A1 true WO2023034367A1 (fr) 2023-03-09

Family

ID=85413068

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2022/042134 Ceased WO2023034367A1 (fr) 2021-09-01 2022-08-31 Foyer incorporant des éléments de sécurité

Country Status (2)

Country Link
US (1) US20230109646A1 (fr)
WO (1) WO2023034367A1 (fr)

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USD1050376S1 (en) * 2021-12-31 2024-11-05 Sunjoy Industries Group Ltd. Fire pit table
USD1064706S1 (en) * 2022-06-17 2025-03-04 Morsø Jernstøberi A/S Cooking oven with baking stone
USD995736S1 (en) * 2023-02-08 2023-08-15 Banggan Yan Gas fire pit table
USD1060627S1 (en) * 2023-11-03 2025-02-04 Zachary Alan Designs Llc Concrete fire bowl
USD1051317S1 (en) * 2024-07-18 2024-11-12 Xiamen Dinuo Industrial Co., Ltd Propane fire pit

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US20060027150A1 (en) * 2004-08-04 2006-02-09 O'connor Brian M Air curtain incinerator
US20080308645A1 (en) * 2007-06-13 2008-12-18 Ben Presley Fire and water system
US20140158111A1 (en) * 2011-07-29 2014-06-12 Ningbo Richen Electrical Appliance Co., Ltd Fireplace of Combusting Gasified Liquid Fuel
US20140255857A1 (en) * 2013-03-07 2014-09-11 Duraflame, Inc. Feed and burner control system
US20170324936A1 (en) * 2016-05-03 2017-11-09 Bao Tran Smart lighting and city sensor
US20170350591A1 (en) * 2015-02-17 2017-12-07 Clearsign Combustion Corporation Burner system with a perforated flame holder and a plurality of fuel sources
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US7604478B2 (en) * 2005-03-21 2009-10-20 Honeywell International Inc. Vapor resistant fuel burning appliance
US20080264408A1 (en) * 2007-04-27 2008-10-30 Stephen Anthony Konkle Decorative gas burner
US9192881B2 (en) * 2013-03-15 2015-11-24 Hearth Products Controls Co. Water basin and system
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060027150A1 (en) * 2004-08-04 2006-02-09 O'connor Brian M Air curtain incinerator
US20080308645A1 (en) * 2007-06-13 2008-12-18 Ben Presley Fire and water system
US20140158111A1 (en) * 2011-07-29 2014-06-12 Ningbo Richen Electrical Appliance Co., Ltd Fireplace of Combusting Gasified Liquid Fuel
US20140255857A1 (en) * 2013-03-07 2014-09-11 Duraflame, Inc. Feed and burner control system
US20170350591A1 (en) * 2015-02-17 2017-12-07 Clearsign Combustion Corporation Burner system with a perforated flame holder and a plurality of fuel sources
US20180347817A1 (en) * 2015-04-03 2018-12-06 Stump Chunks Llc Heating device
US20170324936A1 (en) * 2016-05-03 2017-11-09 Bao Tran Smart lighting and city sensor

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