CN107961460B - Automatic fire extinguishing device of smoke exhaust system of range hood - Google Patents
Automatic fire extinguishing device of smoke exhaust system of range hood Download PDFInfo
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- CN107961460B CN107961460B CN201710322804.7A CN201710322804A CN107961460B CN 107961460 B CN107961460 B CN 107961460B CN 201710322804 A CN201710322804 A CN 201710322804A CN 107961460 B CN107961460 B CN 107961460B
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- range hood
- fire extinguishing
- smoke
- flue
- pipe
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/386—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the closure members being rotatable or pivoting
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- 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
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
Abstract
An automatic fire extinguishing device of a smoke exhaust system of a range hood comprises the range hood, a fire prevention valve, a smoke pipe, a spraying fire extinguishing mechanism, a sensor, a smoke guide plate lifting mechanism and a controller, wherein the spraying fire extinguishing mechanism sprays fire extinguishing media to the smoke pipe and the inside of a smoke flue of the range hood, the sensor detects the temperature or smoke concentration in the smoke flue of the range hood, the smoke guide plate lifting mechanism drives the smoke guide plate to move up and down, an electric signal is connected between the controller and the sensor, and the controller controls the work states of the smoke guide plate lifting mechanism, the fire prevention valve opening and closing mechanism and the spraying fire extinguishing mechanism. The invention has the advantages that: when the range hood is in internal fire, the controller controls the fire prevention valve, the smoke guide plate lifting mechanism and the spraying fire extinguishing mechanism after detecting the output signal of the sensor, so that the fire prevention valve and the smoke guide plate act simultaneously, the internal flue of the range hood is isolated from the outside, the power supply of the fan is cut off, the spraying fire extinguishing mechanism extinguishes the internal part of the flue, the internal part of the flue is prevented from continuing to burn, and the rapid fire extinguishing is realized.
Description
Technical Field
The invention relates to a fire extinguishing device, in particular to an automatic fire extinguishing device of a smoke exhaust system of a range hood.
Background
The range hood is the necessary domestic appliance in kitchen, and the range hood uses in a period, and spiral case and oil net can adhere to the oil film, and in addition, because chinese style easily arouses the pot to catch fire when frying, and the flame once flees on the oil film of oil net and just arouses range hood to catch fire very easily, seriously endangers user safety. At present, people have invented a range hood with an automatic fire extinguishing function, for example, "a fire extinguishing system and a range hood" disclosed in chinese utility model with patent number ZL 201620779684.4 (publication number is CN 205913671U), the fire extinguishing system includes a temperature sensor, a fire extinguishing apparatus and a controller, the temperature sensor is used for detecting the temperature of the range hood, the fire extinguishing apparatus is used for spraying out a fire extinguishing medium, in a preset time, when a temperature value is greater than a preset temperature, the controller controls the fire extinguishing apparatus to perform a fire extinguishing function, thus, after the fire extinguishing system is integrated on the range hood, the range hood can judge whether to fire through the temperature sensor, and after fire is fired, the controller controls the fire extinguishing apparatus to perform a fire extinguishing function. Also as the range hood with fire extinguishing device and the control method thereof disclosed in the Chinese invention patent application with the application number of 201510840587.1 (with the application publication number of CN 105333478A), the range hood comprises a shell, a fan and a controller, wherein a temperature detection device, a smoke detection device and a spraying device which are connected with the controller are arranged on the shell, the controller controls the spraying device to work according to signals detected by the temperature detection device and the smoke detection device, and the spraying device can automatically spray to achieve the effect of fire extinguishing when a fire disaster happens around the range hood and the range hood per se. Although, above-mentioned range hood can detect temperature or smog concentration through the sensor, the controller controls extinguishing device work according to the sensor signal that detects, thereby realize automatic fire extinguishing when range hood is on fire, range hood's safety in utilization has been improved, however, this kind of range hood can not keep apart range hood's flue and external world when extinguishing device work, the flame flees easily in public flue and flees the range hood below downwards when the inside fire of range hood, thereby lead to the intensity of a fire to spread easily, be unfavorable for quick fire extinguishing, the fire extinguishing effect is not good. In conclusion, the structure of the existing range hood with the automatic fire extinguishing device needs to be further improved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an automatic fire extinguishing device of a smoke exhaust system of a range hood, which can isolate a flue from an external space when a fire happens, aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: this range hood smoke exhaust system's automatic fire extinguishing device, including range hood, fire prevention valve and the tobacco pipe of connection between range hood's air outlet and fire prevention valve, range hood is including the fan and lead cigarette board, its characterized in that: still including spraying fire extinguishing mechanism, sensor, leading cigarette board elevating system and controller, spray fire extinguishing mechanism be used for to the inside blowout medium of tobacco pipe and range hood flue, the sensor is used for detecting temperature or smog concentration in the range hood flue, it is used for the drive to lead cigarette board elevating system and make elevating movement, the signal input part of controller with signal of telecommunication links to each other between the signal output part of sensor, the controller is controlled through the output signal of received sensor fan, lead cigarette board elevating system, fire prevention valve and the operating condition who sprays fire extinguishing mechanism.
The spray fire-extinguishing mechanism can have various structures, preferably, the spray fire-extinguishing mechanism comprises a water pump assembly and a water pipe, the water pump assembly is installed at the top of the range hood, the water pipe is arranged inside the smoke pipe, and the water pump assembly is provided with a water inlet and a water outlet communicated with the water inlet of the water pipe.
Preferably, the water pipe is provided with a smoke pipe injection section and a flue injection section, the smoke pipe injection section is distributed along the length of the smoke pipe, the flue injection section is arranged at the air outlet of the fan, the flue injection section transversely extends from the bottom end of the smoke pipe injection section to the water outlet of the water pump assembly, and the water inlet of the flue injection section is communicated with the water outlet of the water pump assembly.
The smoke guide plate lifting mechanism can have various structures, and comprises a driving motor and a lifting rod which can do lifting motion under the driving of the driving motor, wherein the driving motor is arranged in the casing of the range hood, and the lower end of the lifting rod is connected with the smoke guide plate.
Fire prevention valve closing mechanism can have multiple structure, preferably, the fire prevention valve include valve body, valve block, driving piece, screens flexure strip, valve block closed lever and torsional spring, the driving piece is installed on the valve body, the screens flexure strip is located can produce deformation under the drive of driving piece on the output of driving piece, the one end of valve block closed lever is installed on the valve body, the other end is used for spacing on the screens flexure strip that does not produce deformation, the one end of torsional spring is installed on the valve body, the other end is installed the middle part of valve block closed lever screens flexure strip produces deformation and under the state that breaks away from mutually with valve block closed lever, valve block closed lever pushes down under the effect of torsional spring the valve block and make the fire prevention valve close.
Further preferably, the driving member is an electric expansion device or a wax motor.
Compared with the prior art, the invention has the advantages that: this automatic fire extinguishing device of range hood smoke exhaust system will spray fire extinguishing mechanism and fire prevention valve, the fan, the motion of leading the cigarette board combines, when the range hood is inside to catch fire, can control the fire prevention valve after the controller detects the output signal of sensor, lead cigarette board elevating system and spray fire extinguishing mechanism, make fire prevention valve and lead the cigarette board simultaneous action, when the fire prevention valve is closed, lead cigarette board rebound and close the air intake of range hood, thereby make range hood's inside flue and external isolation, the fan power is cut off simultaneously, spray fire extinguishing mechanism and begin to put out a fire to the flue inside, prevent that the flue is inside to continue to burn, realize putting out a fire rapidly.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a range hood in accordance with an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the range hood according to the embodiment of the present invention in a normal smoke exhaust state;
FIG. 4 is a schematic structural diagram of the range hood according to the embodiment of the present invention in a fire-starting and fire-extinguishing state;
fig. 5 is a schematic structural view of a fire damper according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following examples of the drawings.
As shown in fig. 1 to 4, the automatic fire extinguishing apparatus of the smoke exhaust system of the range hood in the embodiment includes a range hood 1, a fire damper 2, a smoke pipe 3, a spraying fire extinguishing mechanism 4, a sensor 5, a smoke guide plate lifting mechanism 6 and a controller (not shown).
The spray fire-extinguishing mechanism 4 is used for spraying fire-extinguishing medium into the smoke pipe 3 and the smoke channel of the range hood 1. The spray fire extinguishing mechanism 4 of the embodiment includes a water pump assembly 41 and a water pipe 42, the water pump assembly 41 is installed at the top of the range hood 1, the water pipe 42 is disposed inside the smoke pipe 3, the water pump assembly 41 has a water inlet 411 and a water outlet 412, and the water outlet 412 is communicated with the water inlet of the water pipe 42. Whether the water pump assembly 41 supplies water to the water pipe 42 may be controlled by a controller. In order to spray water to the smoke tube 3 and the smoke channel inside the range hood 1, the water pipe 42 has a smoke tube spraying section 421 distributed along the length of the smoke tube and a smoke channel spraying section 422 arranged at the air outlet of the fan, the smoke channel spraying section 422 transversely extends from the bottom end of the smoke tube spraying section 421 to the water outlet of the water pump assembly 41, and the water inlet of the smoke channel spraying section 422 is communicated with the water outlet of the water pump assembly 41. Thus, the smoke pipe injection section 421 can spray water into the smoke pipe 3, and the flue injection section 422 can spray water downwards, so as to spray water into the flue inside the range hood 1.
The sensor 5 of this embodiment is installed in range hood's air intake department, can adopt temperature sensor, can detect the inside temperature of range hood flue with temperature sensor, also can adopt smoke transducer, detects the inside smog concentration of range hood flue with smoke transducer.
The smoke guide plate elevating mechanism 6 of the present embodiment includes a driving motor 61 and an elevating rod 62 capable of elevating and lowering by the driving of the driving motor 61. The driving motor 61 is disposed inside the casing 10 of the range hood 1, and the lower end of the lifting rod 62 is connected to the smoke guide 12. When the smoke guide plate 12 moves to the highest position, the smoke guide plate can be approximately attached to the smoke collecting cover 13, so that the air inlet of the range hood 1 is closed.
As shown in fig. 5, the fire damper 2 of this embodiment includes a valve body 21, a valve plate 22, a driving member 23, a clamping elastic piece 24, a valve plate closing rod 25 and a torsion spring 26, the driving member 23 is installed on the valve body 21, the clamping elastic piece 24 is installed on an output end of the driving member 23 and can deform under the driving of the driving member, one end of the valve plate closing rod 25 is installed on the valve body 21, the other end of the valve plate closing rod is used for limiting on the clamping elastic piece 24 which does not deform, one end of the torsion spring 26 is installed on the valve body 21, the other end of the torsion spring 26 is installed in the middle of the valve plate closing rod 25, and in a state where the clamping elastic piece 24 deforms and is separated from the valve plate closing rod 25, the valve plate closing rod 25 presses the valve plate 22 under the action of the torsion spring 26 to close the fire damper. In this embodiment, the driving member 23 is an electric retractor or a wax motor.
The signal input end of the controller is connected with the signal output end of the sensor 5 through an electric signal, and the controller controls the working states of the fan 11, the smoke guide plate lifting mechanism 6, the fire valve 2 and the spraying fire extinguishing mechanism 4 of the range hood 1 through the received output signal of the sensor 5.
Taking a temperature sensor as an example, when the range hood works, when the temperature sensor in the range hood detects that the internal temperature of the range hood exceeds a certain critical value, the controller judges that the machine is on fire according to signals of the sensor, and then the controller controls the driving piece 23 of the fire damper 2 to be electrified and extend out, so as to push the clamping elastic piece 24 to deform, so that the valve piece closing rod 25 forcibly closes the valve body 21 under the action of the torsion spring 26, thereby preventing flames from entering a common flue, meanwhile, the smoke guide plate lifting mechanism 6 drives the smoke guide plate 12 to move upwards under the control of the controller, and until the smoke guide plate is attached to or approximately attached to the smoke collection cover 13 to close the air inlet of the range hood, at the moment, a relatively isolated internal space is formed between the fire damper 2 and the smoke guide plate 12, and the relatively isolated internal space is lack of oxygen and can not be combusted continuously. Meanwhile, under the action of the controller, the power supply of the motor of the fan 11 of the range hood is cut off, so that the fan 11 stops rotating, the water pump assembly 41 supplies water to the water pipe 42, and the jet orifice of the water pipe 42 sprays water into the smoke pipe 3 and the flue of the range hood to reduce the temperature.
In addition, in this embodiment, a detergent adding box 43 is further disposed beside the water pump assembly 41, and detergent-like detergents can be added into the detergent adding box 43 in advance, so that the detergent adding box can be used for cleaning a flue and a range hood at ordinary times, thereby further reducing the probability of flue ignition.
The range hood of this embodiment can also have the cleaning mode, when getting into the cleaning mode, the sensor is inoperative, at this moment, under the control of controller, smoke deflector elevating system 6 will lead smoke deflector 12 rebound to highest position, close range hood 1's air intake, form the inner space isolated relatively in range hood 1 is inside, and cut off the power of fan 11 motor, water pipe 42 carries out water spray or spray rinsing liquid to the air outlet of tobacco pipe 3 and range hood 1 and washs, thoroughly wash tobacco pipe 3 and range hood 1, and prevent that the washing liquid from splashing on the cooking utensils mesa, promote user experience. In addition, in the cleaning mode, the fire damper 2 may be closed or not.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications or improvements can be made to the present invention without departing from the principle of the present invention, and these are considered to be within the protection scope of the present invention.
Claims (6)
1. The utility model provides a range hood smoke exhaust system's automatic fire extinguishing device, includes range hood (1), fire prevention valve (2) and connects tobacco pipe (3) between range hood's air outlet and fire prevention valve, range hood (1) is including fan (11) and lead cigarette board (12), its characterized in that: still including spraying fire extinguishing mechanism (4), sensor (5), leading cigarette board elevating system (6) and controller, spray fire extinguishing mechanism (4) be used for to inside blowout fire extinguishing medium of tobacco pipe (3) and range hood (1) flue, sensor (5) are used for detecting temperature or smog concentration in the range hood flue, it is used for the drive to lead cigarette board elevating system (6) lead cigarette board (12) and make elevating movement, the signal input part of controller with signal of telecommunication links to each other between the signal output part of sensor (5), the controller is controlled through the output signal of received sensor (5) fan (11), lead cigarette board elevating system (6), fire prevention valve (2) and the operating condition who sprays fire extinguishing mechanism (4).
2. The automatic fire extinguishing device of the smoke exhaust system of the range hood according to claim 1, characterized in that: the spray fire extinguishing mechanism (4) comprises a water pump assembly (41) and a water pipe (42), the water pump assembly (41) is installed at the top of the range hood (1), the water pipe (42) is arranged inside the smoke pipe (3), and the water pump assembly (41) is provided with a water inlet (411) and a water outlet (412) communicated with the water inlet of the water pipe (42).
3. The automatic fire extinguishing device of the smoke exhaust system of the range hood according to claim 2, characterized in that: the water pipe (42) is provided with a smoke pipe injection section (421) distributed along the length of the smoke pipe and a flue injection section (422) arranged at an air outlet of the fan, the flue injection section (422) transversely extends from the bottom end of the smoke pipe injection section (421) to the water outlet of the water pump assembly (41), and the water inlet of the flue injection section (422) is communicated with the water outlet of the water pump assembly (41).
4. The automatic fire extinguishing device of the smoke exhaust system of the range hood according to claim 1, characterized in that: the smoke guide plate lifting mechanism (6) comprises a driving motor (61) and a lifting rod (62) which can do lifting motion under the driving of the driving motor, the driving motor (61) is arranged inside a shell (10) of the range hood (1), and the lower end of the lifting rod (62) is connected to the smoke guide plate (12).
5. The automatic fire extinguishing device of the smoke exhaust system of the range hood according to claim 1, characterized in that: fireproof valve (2) include valve body (21), valve block (22), driving piece (23), screens flexure strip (24), valve block closing lever (25) and torsional spring (26), driving piece (23) are installed on valve body (21), screens flexure strip (24) are located on the output of driving piece (23) and can produce deformation under the drive of driving piece, the one end of valve block closing lever (25) is installed on valve body (21), the other end is used for spacing on the screens flexure strip (24) that do not produce deformation, the one end of torsional spring (26) is installed on valve body (21), the other end is installed the middle part of valve block closing lever (25) screens flexure strip (24) produce deformation and with valve block closing lever (25) under the state that breaks away from mutually, valve block closing lever (25) are pressed down valve block (22) and are made fireproof valve to close under the effect of torsional spring (26).
6. The automatic fire extinguishing device of the smoke exhaust system of the range hood according to claim 5, characterized in that: the driving part (23) is an electric expansion piece or a wax motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322804.7A CN107961460B (en) | 2017-05-09 | 2017-05-09 | Automatic fire extinguishing device of smoke exhaust system of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710322804.7A CN107961460B (en) | 2017-05-09 | 2017-05-09 | Automatic fire extinguishing device of smoke exhaust system of range hood |
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| Publication Number | Publication Date |
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| CN107961460A CN107961460A (en) | 2018-04-27 |
| CN107961460B true CN107961460B (en) | 2022-11-25 |
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| CN201710322804.7A Active CN107961460B (en) | 2017-05-09 | 2017-05-09 | Automatic fire extinguishing device of smoke exhaust system of range hood |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375346B (en) * | 2019-06-21 | 2021-01-15 | 宁波方太厨具有限公司 | Oil fume purification device and control method thereof |
| CN110901942A (en) * | 2019-12-25 | 2020-03-24 | 长春师范大学 | Fume extractor based on large-load mooring unmanned aerial vehicle |
| CN111627184A (en) * | 2020-06-20 | 2020-09-04 | 福建南亿智能科技有限公司 | Alarm linkage system |
| US11545014B1 (en) | 2020-08-18 | 2023-01-03 | ArchAngel Fire Systems Holdings, LLC | Fire detection devices and systems and methods for their use |
| CN112833437B (en) * | 2021-01-22 | 2022-05-10 | 南京金弓厨具设备有限公司 | Frequency conversion energy-saving smoke hood |
| CN114234258A (en) * | 2022-01-14 | 2022-03-25 | 珠海格力电器股份有限公司 | Range hood structure and range hood |
| CN114344760B (en) * | 2022-02-24 | 2022-09-09 | 南昌百济制药有限公司 | Range hood capable of automatically detecting and extinguishing fire |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2164649A1 (en) * | 1995-12-07 | 1997-06-08 | Nicholas Egon Weninger | Stove extinguisher |
| JP4777695B2 (en) * | 2005-06-10 | 2011-09-21 | 株式会社モリタホールディングス | Range hood fire extinguisher |
| CN102087034B (en) * | 2009-12-07 | 2012-08-01 | 魏祥华 | Fire-proof and oil drop-proof range hood with adjustable fume-suction hood |
| CN202479171U (en) * | 2012-02-08 | 2012-10-10 | 陕西理工学院 | Automatic cleaning and fire prevention and extinguishing system for oil flue in catering industry |
| CN204106894U (en) * | 2014-09-03 | 2015-01-21 | 孙朝中 | Smoke discharging pipe automatic fire prevention extinguishing device |
| CN105240582A (en) * | 2015-10-16 | 2016-01-13 | 宁波方太厨具有限公司 | Flue fire damper for range hood |
| CN205245277U (en) * | 2015-11-27 | 2016-05-18 | 广东万和新电气股份有限公司 | Take extinguishing device's range hood |
| CN206837270U (en) * | 2017-05-09 | 2018-01-05 | 宁波方太厨具有限公司 | A kind of automatic fire extinguisher of range hood smoke evacuation system |
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2017
- 2017-05-09 CN CN201710322804.7A patent/CN107961460B/en active Active
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