CN105299717A - Smoke exhauster capable of automatically adjusting wind speed - Google Patents
Smoke exhauster capable of automatically adjusting wind speed Download PDFInfo
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- CN105299717A CN105299717A CN201410600043.3A CN201410600043A CN105299717A CN 105299717 A CN105299717 A CN 105299717A CN 201410600043 A CN201410600043 A CN 201410600043A CN 105299717 A CN105299717 A CN 105299717A
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Abstract
The invention discloses a smoke exhauster capable of automatically adjusting wind speed. A light emitter and a light receiver are arranged on side walls of the smoke exhauster; the light emitter can emit light toward the smoke collection cavity of the smoke exhauster; the light receiver can receive the light coming from the smoke collection cavity of the smoke exhauster; the light emitter and/or the light receiver are/is arranged in accommodating holes; the openings, facing to the smoke collection cavity, of the accommodating holes are provided with air curtain generation devices; and the air curtain generation devices are used for generating air curtains to prevent smoke entering the accommodating holes. According to the smoke exhauster which is capable of automatically adjusting the wind speed, the wind speed of a fan can be automatically adjusted; the operation is convenient; and while the smoke pollution in a kitchen is fully avoided, an energy-saving effect can also be realized.
Description
Technical field
The present invention relates to a kind of smoke exhaust ventilator of automatic adjustment wind speed.
Background technology
The composition of kitchen fume is very complicated, mainly contains water, aldehyde, ketone, alcohol etc., comprising the known mutagenesis such as volatile nitrosamine, heterocyclic amine compound, carcinogenic substance and tar, carbon monoxide and carbon dioxide etc.Existing harmful health, pollutes Kitchen hygiene environment again, must extract in time.
The wind speed size of conventional extraction hood needs artificial adjustment, there is inadequate science accurate, extract oil smoke and meet health requirements not, and often open switch for fume exhauster because forget in gastronomical process or need to regulate smoke exhaust ventilator to cause the inconvenient phenomenons such as in a rush.
Summary of the invention
The object of the present invention is to provide a kind of smoke exhaust ventilator of automatic adjustment wind speed, it can detect the cigarette such as kitchen fume and water vapour vapour concentration automatically, and according to the concentration of actual cigarette vapour or with or without the blower fan wind speed controlling smoke exhaust ventilator, Based Intelligent Control smoke exhaust ventilator works, and reaches the object in purification kitchen.
One aspect of the present invention, relate to a kind of smoke exhaust ventilator of automatic adjustment wind speed, described smoke exhaust ventilator sidewall is provided with light emitters and light receiver, described light emitters can towards described smoke exhaust ventilator smoke collecting chamber emission of light, described light receiver can receive the light from smoke exhaust ventilator smoke collecting chamber, described light emitters and/or described light receiver are placed in accommodation hole, described accommodation hole is provided with device for generating air curtain towards the opening of smoke collecting chamber, described device for generating air curtain for generation of air curtain to stop that oil smoke enters described accommodation hole.
Described light emitters can be infrared transmitter or generating laser.Described infrared light emission spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre time, testing result is more stable and reliable.
As specific embodiment, described device for generating air curtain comprises air outlet and ajutage, and described air outlet is arranged at described accommodation hole below the opening of smoke collecting chamber, can air-out vertically upward, described ajutage one end and described air outlet are connected, and the other end and blower fan are connected.Described blower fan can be independently blower fan, also can be by arranging an other pipe to the air channel of fume exhaust fan blower, with the blower fan of smoke exhaust ventilator for device for generating air curtain provides wind-force.Described device for generating air curtain can also be provided with gas distributor.
As one of specific embodiment, the two opposite sides correspondence of described smoke exhaust ventilator is provided with light emitters and light receiver, can receive described light emitters send and the light passing smoke exhaust ventilator oil smoke district to make described light receiver.Described light emitters and the preferred correspondence of light receiver are arranged at the described lampblack absorber left and right sides.
As one of specific embodiment, one sidewall of described smoke exhaust ventilator is provided with a light emitters, a light receiver is being set with the same sidewall or adjacent wall that arrange light emitters, described light emitters can be being received to make described light receiver and send and the light reflected by oil smoke district.Described light emitters and light receiver are preferably disposed on described smoke exhaust ventilator homonymy.
As one of specific embodiment, one sidewall of described smoke exhaust ventilator is provided with a light emitters, two light receivers are being set with the same sidewall or adjacent wall that arrange light emitters, described light emitters can be being received to make described light receiver and send and the light reflected through smoke exhaust ventilator oil smoke district.Described two light recipients are preferably placed at described light emitters homonymy.
As one of specific embodiment, one sidewall of described smoke exhaust ventilator is provided with a light emitters, light receiver one is being set with the oppose side wall arranging light emitters, light receiver two is being set with the homonymy or adjacent wall that arrange light emitters, can receive described light emitters to make described light receiver one to send and through the light in oil smoke district, light receiver two can receive described light emitters and to send and through the light of oil smoke district reflection.Described light recipient two is preferably placed at the same sidewall of described light emitters.
After adopting such scheme, the present invention at least can realize following beneficial effect:
1, when the light of light emitters transmitting is through oil smoke district, energy is absorbed, received by light receiver after scattering, by transmitting and receiving the energy value change of light, concentration and the variation tendency thereof of cigarette vapour can be recorded, thus control blower fan wind speed, realize the work of Based Intelligent Control smoke exhaust ventilator, reach the object in purification kitchen;
2, infrared transmitter is adopted, and the spectral region making it launch 600 wave numbers/centimetre-4000 wave numbers/centimetre, and the main component of kitchen cigarette vapour 3000 wave numbers/centimetre region of ultra-red have absworption peak, light transmittance is low, and therefore like this design more can accurately measure smokescope;
3, by arranging accommodation hole in smoke collecting chamber center side position, make transmitter and receiver be mounted in accommodation hole, such project organization is simple, is easy to install.
4, by the automatic adjustment of wind speed, from the power consumption of smoke exhaust ventilator and gas consumption two aspects of gas-cooker, energy-conservation object is all achieved.
5, described light emitters and/or described light receiver are contained in, and front opening is provided with in the accommodation hole of air curtain generator, can effectively prevent light emitters and light receiver to be contaminated by smoke.
Accompanying drawing explanation
Fig. 1 is the decomposition texture schematic diagram of the embodiment of the present invention 1 smoke exhaust ventilator;
Fig. 2 is the decomposition texture schematic diagram of the embodiment of the present invention 2 smoke exhaust ventilator;
Fig. 3 is the decomposition texture schematic diagram of the embodiment of the present invention 3 smoke exhaust ventilator;
Fig. 4 is the decomposition texture schematic diagram of the embodiment of the present invention 4 smoke exhaust ventilator;
Fig. 5 is embodiment of the present invention device for generating air curtain schematic diagram;
1 is light emitters; 2 is light receiver; 3 is accommodation hole; 4 is device for generating air curtain; 5 air outlets; 6 is ajutage; 7 is gas distributor.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, can better understand the present invention and can be implemented, but illustrated embodiment is not as a limitation of the invention to make those skilled in the art.
Embodiment 1
As shown in Figure 1 and Figure 5, the present embodiment provide and automatically regulate the smoke exhaust ventilator of wind speed that smoke collecting chamber left and right sides wall correspondence is provided with accommodation hole 3, light emitters 1 and light receiver 2 are contained in accommodation hole 3 respectively.Described light receiver can receive described light emitters and send and the light passing smoke exhaust ventilator oil smoke district.The air outlet 4 of device for generating air curtain is elongated, and be arranged at the below of described accommodation hole 3 front opening, length is a bit larger tham the internal diameter of described accommodation hole 3, can towards directly over blowing, formed air curtain to stop that the oil smoke in oil smoke district enters accommodation hole 3.Ajutage 5 one end of air curtain generator is connected with air outlet 4, and the other end, by a bypass line, accesses the fan air channel of smoke exhaust ventilator.During smoke exhaust ventilator blowing, by bypass line, for device for generating air curtain provides wind-force.Or ajutage 5 one end of air curtain generator is connected with air outlet 4, and the other end and independently blower fan is connected.After this fan starting, for this device for generating air curtain provides wind-force.A gas distributor can be set bottom air outlet, can be uniformly distributed at air outlet to make the gas of producing by boasting from air outlet.This gas distributor can be such as form one flat plate being arranged some through holes.
This light emitters can be infrared transmitter, also can be generating laser.Corresponding, this light receiver can be infrared light receiver, also can be laser pickoff.
Smoke exhaust ventilator that the present embodiment provides, the smoke exhaust ventilator cigarette vapour detection method adopted is, light emitters launches infrared light or laser towards oil smoke district, by detecting from this light emitters, and through the infrared light in oil smoke district or the light intensity of laser or its variation tendency, judge oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend.
The smoke exhaust ventilator wind speed Automatic adjustment method that the present embodiment adopts is:
Light emitters is towards oil smoke district emission of light;
Light receiver receives light emitters and launches and pass the light in described oil smoke district;
According to intensity and/or the variation trends of described light receiver received light line, regulate the wind speed of smoke exhaust ventilator, or, according to intensity and/or the variation trends of described light receiver received light line, judge oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend, and then according to judged oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend, regulate the wind speed of smoke exhaust ventilator.
If the change of received light line strength is within the scope of the difference threshold of setting and/or in light intensity threshold range, then keep rotation speed of fan constant; If received light line strength is lower than the light intensity threshold value of setting, and/or the value of received light line strength reduction is greater than the difference threshold of setting, illustrates that the cigarette vapour concentration in oil smoke district becomes large, then increase rotation speed of fan, to take the cigarette vapour in oil smoke district away as far as possible, prevent kitchen pollution; If received light line strength is greater than the light intensity threshold value of setting, and/or the value of received light line strength increase is greater than the difference threshold of setting, illustrate that the cigarette vapour concentration in oil smoke district diminishes, then reduce rotation speed of fan, while reduction fan energy consumption, reduce blower fan exhausting to the impact of combustion gas utilization ratio.
Smoke exhaust ventilator that the present embodiment provides, the intensity of light receiver received light line and the mapping table of cigarette vapour concentration can be preset in smoke exhaust ventilator, and/or the mapping table of difference between the intensity of the intensity of described reception light and the light emitted line of light emitters and cigarette vapour change in concentration relation, according to the intensity of light receiver received light line, or the difference between the intensity of the intensity of described reception light and the light emitted line of light emitters, utilize the mapping table preset, concentration and its variation tendency of cigarette vapour can be determined.
If the change of the oil smoke district cigarette vapour concentration judged is within the scope of the difference threshold of setting, and/or within the scope of cigarette vapour concentration threshold, then keep rotation speed of fan constant; If the oil smoke district cigarette vapour concentration judged is lower than the cigarette vapour concentration threshold of setting, and/or the value of this cigarette vapour concentration reduction is greater than the difference threshold of setting, then reduce rotation speed of fan, while reduction fan energy consumption, reduces blower fan exhausting to the impact of combustion gas utilization ratio; If the oil smoke district cigarette vapour concentration judged is greater than the cigarette vapour concentration threshold of setting, and/or the value of this cigarette vapour concentration increase is greater than the difference threshold of setting, then increase rotation speed of fan, to take the cigarette vapour in oil smoke district away as far as possible, prevent kitchen pollution.
Described increase rotation speed of fan can be instant increase also can be postpone to increase; Described reduction can be instant reduction, also can be to postpone to reduce.Use delay feature, motor frequent start-stop and speed change can be prevented, cause the damage of motor.
Described infrared light emission spectral region 600 wave numbers/centimetre-4000 wave numbers/centimetre time, strong to the penetration power of oil smoke district cigarette vapour, testing result is more stable and reliable.
Light receiver received light line strength of the present invention, when the output signal of used light receiver is for current value, both can directly represent with exported current value, also can be the corresponding table that a light receiver output current and received light line strength are set, and obtain received light intensity value according to this corresponding table.That is, the light intensity alleged by the present invention or its variation tendency, both can refer to the current value that light receiver exports, and also can refer to according to the determined light intensity of this current value.Same, the alleged process obtaining oil smoke district cigarette vapour concentration or its variation tendency according to light receiver received light line strength of the present invention, both can be that the current value directly utilizing light receiver to export is determined, also can be utilize determined light intensity value to determine.
Smoke exhaust ventilator that the present embodiment provides, inside can be provided with light signal processing module and fan control module.After light receiver receives light signal, its received light line signal is sent to the light signal processing module of smoke extractor, this light signal processing module according to it in a period of time, in such as 2 seconds, the light intensity value of the multiple light received (both can be represent with the current value that light receiver exports, also can represent with the light intensity value after converting), draw the change in concentration trend of oil smoke district cigarette vapour, and sent to fan control module, fan control module is according to the change in concentration trend of oil smoke district oil smoke, the wind speed of adjustment fume exhaust fan blower.If oil smoke district cigarette vapour concentration in increase, then improves the blower fan wind speed of smoke exhaust ventilator; If oil smoke district cigarette vapour concentration in reduction, then reduces the blower fan wind speed of smoke exhaust ventilator; If oil smoke district cigarette vapour concentration is basicly stable, then the blower fan wind speed maintaining smoke exhaust ventilator is constant.Or, the intensity of light receiver received light line and the corresponding table of cigarette vapour concentration can be preset in light signal processing module, or difference between the intensity of described reception light and the intensity of the light emitted line of light emitters and the corresponding table between cigarette vapour concentration.After light receiver receives the light that light emitters launches, its received light line signal is sent to the light signal processing module of smoke extractor, light signal processing module can according to the intensity of received light line, or the difference between the intensity of the intensity of described reception light and the light emitted line of light emitters, determines concentration or its variation tendency of cigarette vapour in the correspondence table preset.This concentration or variation tendency are transmitted to fan control module, and the blower fan of smoke exhaust ventilator, according to this cigarette vapour concentration or its variation tendency, is adjusted to corresponding wind speed by fan control module.
Described light signal processing module can be placed in described light receiver, processes, and result is sent to fan control module to received light signal.Described fan control module can be placed in controller of fan, and air-blower control machine, according to received light intensity or light intensity variation tendency or cigarette vapour concentration or cigarette vapour change in concentration trend signal, sends control instruction to fume exhaust fan blower.
Embodiment 2
As shown in Figure 2 and Figure 5, the present embodiment provide and automatically regulate the smoke exhaust ventilator of wind speed to be respectively arranged with accommodation hole 3 at sidewall, light emitters 1 and light receiver 2 are contained in accommodation hole 3 respectively.Described light receiver can receive described light emitters and send and the light reflected by oil smoke district.The air outlet 4 of device for generating air curtain is elongated, and be arranged at the below of described accommodation hole 3 front opening, length is a bit larger tham the internal diameter of described accommodation hole 3, can towards directly over blowing, formed air curtain to stop that the oil smoke in oil smoke district enters accommodation hole 3.Ajutage 5 one end of air curtain generator is connected with air outlet 4, and the other end, by a bypass line, accesses the fan air channel of smoke exhaust ventilator.During smoke exhaust ventilator blowing, by bypass line, for device for generating air curtain provides wind-force.Or ajutage 5 one end of air curtain generator is connected with air outlet 4, and the other end and independently blower fan is connected.After this fan starting, for this device for generating air curtain provides wind-force.A gas distributor can be set bottom air outlet, can be uniformly distributed at air outlet to make the gas of producing by boasting from air outlet.This gas distributor can be such as form one flat plate being arranged some through holes.
This light emitters can be infrared transmitter, also can be generating laser.Corresponding, this light receiver can be infrared light receiver, also can be laser pickoff.
Smoke exhaust ventilator that the present embodiment provides, the smoke exhaust ventilator cigarette vapour detection method adopted is, light emitters launches infrared light or laser towards oil smoke district, by detecting from this light emitters, and by the light intensity of the infrared light that reflects or laser or its variation tendency, judge oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend.
The smoke exhaust ventilator wind speed Automatic adjustment method that the present embodiment adopts is:
Light emitters is towards oil smoke district emission of light;
Light receiver receives light emitters and launches and the light reflected by oil smoke district;
According to intensity and/or the variation trends of described light receiver received light line, regulate the wind speed of smoke exhaust ventilator, or, according to intensity and/or the variation trends of described light receiver received light line, judge oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend, and then according to judged oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend, regulate the wind speed of smoke exhaust ventilator.
If the change of received light line strength is within the scope of the difference threshold of setting and/or in light intensity threshold range, then keep rotation speed of fan constant; If received light line strength is lower than the light intensity threshold value of setting, and/or the value of received light line strength reduction is greater than the difference threshold of setting, illustrate that the cigarette vapour concentration in oil smoke district diminishes, then reduce rotation speed of fan, while reduction fan energy consumption, reduce blower fan exhausting to the impact of combustion gas utilization ratio; If received light line strength is greater than the light intensity threshold value of setting, and/or the value of received light line strength increase is greater than the difference threshold of setting, illustrates that the cigarette vapour concentration in oil smoke district becomes large, then increase rotation speed of fan, to take the cigarette vapour in oil smoke district away as far as possible, prevent kitchen pollution.
Smoke exhaust ventilator that the present embodiment provides, the intensity of light receiver received light line and the mapping table of cigarette vapour concentration can be preset in smoke exhaust ventilator, and/or the mapping table of difference between the intensity of the intensity of described reception light and the light emitted line of light emitters and cigarette vapour change in concentration relation, according to the intensity of light receiver received light line, or the difference between the intensity of the intensity of described reception light and the light emitted line of light emitters, utilize the mapping table preset, concentration and its variation tendency of cigarette vapour can be determined.
Light receiver received light line strength of the present invention, when the output signal of used light receiver is for current value, both can directly represent with exported current value, also can be the corresponding table that a light receiver output current and received light line strength are set, and obtain received light intensity value according to this corresponding table.That is, the light intensity alleged by the present invention or its variation tendency, both can refer to the current value that light receiver exports, and also can refer to according to the determined light intensity of this current value.Same, the alleged process obtaining oil smoke district cigarette vapour concentration or its variation tendency according to light receiver received light line strength of the present invention, both can be that the current value directly utilizing light receiver to export is determined, also can be utilize determined light intensity value to determine.
If the change of the oil smoke district cigarette vapour concentration judged is within the scope of the difference threshold of setting, and/or within the scope of cigarette vapour concentration threshold, then keep rotation speed of fan constant; If the oil smoke district cigarette vapour concentration judged is lower than the cigarette vapour concentration threshold of setting, and/or the value of this cigarette vapour concentration reduction is greater than the difference threshold of setting, then reduce rotation speed of fan, while reduction fan energy consumption, reduces blower fan exhausting to the impact of combustion gas utilization ratio; If the oil smoke district cigarette vapour concentration judged is greater than the cigarette vapour concentration threshold of setting, and/or the value of this cigarette vapour concentration increase is greater than the difference threshold of setting, then increase rotation speed of fan, to take the cigarette vapour in oil smoke district away as far as possible, prevent kitchen pollution.
Described increase rotation speed of fan can be instant increase also can be postpone to increase; Described reduction can be instant reduction, also can be to postpone to reduce.Use delay feature, motor frequent start-stop and speed change can be prevented, cause the damage of motor.
Described infrared light emission spectral region 600 wave numbers/centimetre-4000 wave numbers/centimetre time, strong to the penetration power of oil smoke district cigarette vapour, testing result is more stable and reliable.
Smoke exhaust ventilator that the present embodiment provides, inside can be provided with light signal processing module and fan control module.After light receiver receives light signal, its received light line signal is sent to the light signal processing module of smoke extractor, this light signal processing module according to it in a period of time, in such as 2 seconds, the light intensity value of the multiple light received (both can be represent with the current value that light receiver exports, also can represent with the light intensity value after converting), draw the change in concentration trend of oil smoke district cigarette vapour, and sent to fan control module, fan control module is according to the change in concentration trend of oil smoke district oil smoke, the wind speed of adjustment fume exhaust fan blower.If oil smoke district cigarette vapour concentration in increase, then improves the blower fan wind speed of smoke exhaust ventilator; If oil smoke district cigarette vapour concentration in reduction, then reduces the blower fan wind speed of smoke exhaust ventilator; If oil smoke district cigarette vapour concentration is basicly stable, then the blower fan wind speed maintaining smoke exhaust ventilator is constant.Or, the intensity of light receiver received light line and the corresponding table of cigarette vapour concentration can be preset in light signal processing module, or difference between the intensity of described reception light and the intensity of the light emitted line of light emitters and the corresponding table between cigarette vapour concentration.After light receiver receives the light that light emitters launches, its received light line signal is sent to the light signal processing module of smoke extractor, light signal processing module can according to the intensity of received light line, or the difference between the intensity of the intensity of described reception light and the light emitted line of light emitters, determines concentration or its variation tendency of cigarette vapour in the correspondence table preset.This concentration or variation tendency are transmitted to fan control module, and the blower fan of smoke exhaust ventilator, according to this cigarette vapour concentration or its variation tendency, is adjusted to corresponding wind speed by fan control module.
Described light signal processing module can be placed in described light receiver, processes, and result is sent to fan control module to received light signal.Described fan control module can be placed in controller of fan, and air-blower control machine, according to received light intensity or light intensity variation tendency or cigarette vapour concentration or cigarette vapour change in concentration trend signal, sends control instruction to fume exhaust fan blower.
Embodiment 3
As shown in Figure 3 and Figure 5, the present embodiment provide and automatically regulate the smoke exhaust ventilator of wind speed to be provided with three accommodation holes, 3, light emitters 1 and two light receivers 2 are contained in accommodation hole 3 respectively at smoke collecting chamber one sidewall.Described light receiver can receive described light emitters and send and the light reflected through smoke exhaust ventilator oil smoke district.The air outlet 4 of device for generating air curtain is elongated, and be arranged at the below of described accommodation hole 3 front opening, length is a bit larger tham the internal diameter of described accommodation hole 3, can towards directly over blowing, formed air curtain to stop that the oil smoke in oil smoke district enters accommodation hole 3.Ajutage 5 one end of air curtain generator is connected with air outlet 4, and the other end, by a bypass line, accesses the fan air channel of smoke exhaust ventilator.During smoke exhaust ventilator blowing, by bypass line, for device for generating air curtain provides wind-force.Or ajutage 5 one end of air curtain generator is connected with air outlet 4, and the other end and independently blower fan is connected.After this fan starting, for this device for generating air curtain provides wind-force.A gas distributor can be set bottom air outlet, can be uniformly distributed at air outlet to make the gas of producing by boasting from air outlet.This gas distributor can be such as form one flat plate being arranged some through holes.
This light emitters can be infrared transmitter, also can be generating laser.Corresponding, this light receiver can be infrared light receiver, also can be laser pickoff.
Smoke exhaust ventilator that the present embodiment provides, the smoke exhaust ventilator cigarette vapour detection method adopted is, light emitters launches infrared light or laser towards oil smoke district, detect from this light emitters respectively by two light receivers, and through oil smoke district reflection infrared light or laser light intensity and do difference, judge oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend.
Because two angles of reflection between light receiver from light emitters are different, so two light receivers can receive, by oil smoke district naturally there is a difference between the light intensity that reflects.The oil smoke concentration in this difference and oil smoke district is proportionate, and when the oil smoke concentration in oil smoke district is larger, this difference will be larger; When the oil smoke concentration in oil smoke district is less, this difference will be less.And, do poor mode by this two light receivers, substantially can remove the interference of extraneous scattered light.Extraneous irreflexive light can have influence on the amount of light receiver received light line, irreflexive attribute determines, by rationally arranging the position of two light receivers, although irreflexive concrete value is difficult to determine, but, the impact of two light receivers is substantially identical, and this is easy to accomplish to those skilled in the art.So, do poor mode by two light receivers, just substantially can remove the interference of extraneous scattered light, and it is much to go to consider that this influence value has on earth.
The smoke exhaust ventilator wind speed Automatic adjustment method that the present embodiment adopts is:
Light emitters is towards oil smoke district emission of light;
Two light receivers receive light emitters respectively and launch and the light reflected through oil smoke district on different reflection angle;
According to the strength difference of two light receiver received light lines, regulate the wind speed of smoke exhaust ventilator, or, according to the strength difference of two light receiver received light lines, judge oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend, and then according to judged oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend, regulate the wind speed of smoke exhaust ventilator.
If the strength difference change of two light receiver received light lines is within the scope of the difference threshold of setting, then keep rotation speed of fan constant; If the strength difference of two light receiver received light lines is greater than the difference threshold of setting, then increase rotation speed of fan, siphon away, to prevent fume pollution with the quick oil smoke by oil smoke district; If the strength difference of two light receiver received light lines is less than the difference threshold of setting, then reduce rotation speed of fan, while reduction blower fan power consumption, reduce exhausting to the impact of combustion gas utilization ratio.Such as, when fume exhaust fan blower runs under a certain rotating speed, it is constant that the strength difference excursion setting two light receiver received light lines maintains wind speed when being less than positive and negative 5, and the strength difference of two light receiver received light lines is greater than 50 improves wind speed, is less than 20 and reduces wind speed.If the strength difference change of two light receiver received light lines is less than 5, then keep rotation speed of fan constant; If the strength difference of two light receiver received light lines is greater than 50, then increase rotation speed of fan, siphon away, to prevent fume pollution with the quick oil smoke by oil smoke district; If the strength difference of two light receiver received light lines is less than 20, then reduce rotation speed of fan, while reduction blower fan power consumption, reduce exhausting to the impact of combustion gas utilization ratio.
The smoke exhaust ventilator that the present embodiment provides, the strength difference of two light receiver received light lines and the mapping table of cigarette vapour concentration can be preset in smoke exhaust ventilator, and/or the mapping table of the strength difference variation tendency of two light receiver received light lines and cigarette vapour change in concentration relation, according to the strength difference of two light receiver received light lines, and/or the strength difference variation tendency of two light receiver received light lines, utilize concentration and/or its variation tendency of the mapping table determination cigarette vapour preset.
If the change of the oil smoke district cigarette vapour concentration judged is within the scope of the difference threshold of setting, and/or within the scope of cigarette vapour concentration threshold, then keep rotation speed of fan constant; If the oil smoke district cigarette vapour concentration judged is lower than the cigarette vapour concentration threshold of setting, and/or the value of this cigarette vapour concentration reduction is greater than the difference threshold of setting, then reduce rotation speed of fan; If the oil smoke district cigarette vapour concentration judged is greater than the cigarette vapour concentration threshold of setting, and/or the value of this cigarette vapour concentration increase is greater than the difference threshold of setting, then increase rotation speed of fan.
Described increase rotation speed of fan can be instant increase also can be postpone to increase; Described reduction can be instant reduction, also can be to postpone to reduce.Use delay feature, motor frequent start-stop and speed change can be prevented, cause the damage of motor.
Described infrared light emission spectral region 600 wave numbers/centimetre-4000 wave numbers/centimetre time, testing result is more stable and reliable.
In order to prevent oil smoke to the pollution of light emitters and light receiver, in light emitters and light receiver, transparent cover can be set towards smoke collecting chamber side, make working light to pass this transparent cover, but oil smoke cannot enter and close to light emitters and light receiver.
Light receiver received light line strength of the present invention, when the output signal of used light receiver is for current value, both can directly represent with exported current value, also can be the corresponding table that a light receiver output current and received light line strength are set, and obtain received light intensity value according to this corresponding table.That is, the light intensity alleged by the present invention or its variation tendency, both can refer to the current value that light receiver exports, and also can refer to according to the determined light intensity of this current value.Same, the alleged process obtaining oil smoke district cigarette vapour concentration or its variation tendency according to light receiver received light line strength of the present invention, both can be that the current value directly utilizing light receiver to export is determined, also can be utilize determined light intensity value to determine.
Smoke exhaust ventilator that the present embodiment provides, inside can be provided with light signal processing module and fan control module.After light receiver receives light signal, its received light line signal is sent to the light signal processing module of smoke extractor, this light signal processing module is according to the light intensity difference of two light receiver received light lines, draw the change in concentration trend of oil smoke district cigarette vapour, and sent to fan control module, fan control module, according to the change in concentration trend of oil smoke district oil smoke, adjusts the wind speed of fume exhaust fan blower.If oil smoke district cigarette vapour concentration in increase, then improves the blower fan wind speed of smoke exhaust ventilator; If oil smoke district cigarette vapour concentration in reduction, then reduces the blower fan wind speed of smoke exhaust ventilator; If oil smoke district cigarette vapour concentration is basicly stable, then the blower fan wind speed maintaining smoke exhaust ventilator is constant.Or, the strength difference of two light receiver received light lines and the mapping table of cigarette vapour concentration can be preset in light signal processing module, and/or the mapping table of the strength difference variation tendency of two light receiver received light lines and cigarette vapour change in concentration relation, according to the strength difference of two light receiver received light lines, and/or the strength difference variation tendency of two light receiver received light lines, utilize concentration and/or its variation tendency of the mapping table determination cigarette vapour preset.This concentration or variation tendency are transmitted to fan control module, and the blower fan of smoke exhaust ventilator, according to this cigarette vapour concentration or its variation tendency, is adjusted to corresponding wind speed by fan control module.
Described light signal processing module can be placed in described light receiver, processes, and result is sent to fan control module to received light signal.Described fan control module can be placed in controller of fan, and air-blower control machine, according to received light intensity or light intensity variation tendency or cigarette vapour concentration or cigarette vapour change in concentration trend signal, sends control instruction to fume exhaust fan blower.
Embodiment 4
As shown in Figure 4 and Figure 5, the present embodiment provide and automatically regulate the smoke exhaust ventilator of wind speed to be provided with three accommodation holes, 3, light emitters 1 and two light receivers 2 are contained in accommodation hole 3 respectively at smoke collecting chamber sidewall.Wherein, a light receiver is arranged at light emitters oppose side wall, and a light receiver is arranged at light emitters homonymy.Described light receiver can receive described light emitters respectively and send, through the light in oil smoke district and the light through the reflection of oil smoke district.The air outlet 4 of device for generating air curtain is elongated, and be arranged at the below of described accommodation hole 3 front opening, length is a bit larger tham the internal diameter of described accommodation hole 3, can towards directly over blowing, formed air curtain to stop that the oil smoke in oil smoke district enters accommodation hole 3.Ajutage 5 one end of air curtain generator is connected with air outlet 4, and the other end, by a bypass line, accesses the fan air channel of smoke exhaust ventilator.During smoke exhaust ventilator blowing, by bypass line, for device for generating air curtain provides wind-force.Or ajutage 5 one end of air curtain generator is connected with air outlet 4, and the other end and independently blower fan is connected.After this fan starting, for this device for generating air curtain provides wind-force.A gas distributor can be set bottom air outlet, can be uniformly distributed at air outlet to make the gas of producing by boasting from air outlet.This gas distributor can be such as form one flat plate being arranged some through holes.
This light emitters can be infrared transmitter, also can be generating laser.Corresponding, this light receiver can be infrared light receiver, also can be laser pickoff.
Smoke exhaust ventilator that the present embodiment provides, the smoke exhaust ventilator cigarette vapour detection method adopted is, by two light receivers, detect the light from same light source respectively, through the light intensity in oil smoke district and the light intensity that reflected by oil smoke district, and pass through the difference of these two light receiver received light line strengths, judge oil smoke district oil smoke concentration or its variation tendency.
Two light receivers institute is receptible, to reflect by oil smoke district between the light intensity of transmission existence difference naturally.The oil smoke concentration in this difference and oil smoke district is proportionate or negative correlation.Do poor mode by this two light receivers, substantially can remove the interference of extraneous scattered light.Extraneous irreflexive light can have influence on light receiver receive the amount of working light, although irreflexive concrete value is difficult to determine, the impact of two light receivers is substantially identical.So, do poor mode by two light receivers, just substantially can remove the interference of extraneous scattered light, and it is much to go to consider that this influence value has on earth.
In the light signal power collection of illustrative plates received by the light receiver of light emitters offside, the power spectrum amplitude of variation that interfering signal (light, barrier etc.) causes is much larger than useful signal, and frequency, then much smaller than useful signal frequency, can effectively be distinguished.In light signal power collection of illustrative plates received by the light receiver of light emitters and homonymy, interfering signal causes power spectrum amplitude of variation much larger than useful signal, and frequency is then much smaller than useful signal frequency, and change direction is identical with to side receiver direction.Data in two power collection of illustrative plates are asked poor, and visible, interfering signal is because changes in amplitude is identical, weakened, and useful signal is then reinforced, and that is, the impact of interference source has been eliminated.To asking poor result to carry out filtering, the interfering signal of filtering low frequency and the noise signal of high frequency, then carry out amplification process, just can obtain effective light intensity signal value.
The smoke exhaust ventilator wind speed Automatic adjustment method that the present embodiment adopts is:
Light emitters is towards oil smoke district emission of light;
Two light receivers receive through the light in oil smoke district and the light that reflected by oil smoke district respectively;
According to the strength difference of two light receiver received light lines, regulate the wind speed of smoke exhaust ventilator,
Or, according to the strength difference of two light receiver received light lines, judge oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend, and then according to judged oil smoke district cigarette vapour concentration and/or cigarette vapour change in concentration trend, regulate the wind speed of smoke exhaust ventilator.
The strength difference of two light receiver received light lines and the mapping table of cigarette vapour concentration can be preset in smoke exhaust ventilator, and/or the mapping table of the strength difference variation tendency of two light receiver received light lines and cigarette vapour change in concentration relation, according to the strength difference of two light receiver received light lines, and/or the strength difference variation tendency of two light receiver received light lines, utilize concentration and/or its variation tendency of the mapping table determination cigarette vapour preset.
If the strength difference change of two light receiver received light lines is within the scope of the difference threshold of setting, then keep rotation speed of fan constant.If light receiver receive transmitted ray intensity deduct light receiver receive reflection ray intensity difference be greater than the difference threshold of setting, then reduce blower fan wind speed; If light receiver receive transmitted ray intensity deduct light receiver receive reflection ray intensity difference be less than the difference threshold of setting, then increase blower fan wind speed.Or, if light receiver receive reflection ray intensity deduct light receiver receive transmitted ray intensity difference be greater than the difference threshold of setting, then increase blower fan wind speed; If light receiver receive reflection ray intensity deduct light receiver receive transmitted ray intensity difference be less than the difference threshold of setting, then reduce blower fan wind speed.
If the change of the oil smoke district cigarette vapour concentration judged is within the scope of the difference threshold of setting, and/or within the scope of cigarette vapour concentration threshold, then keep rotation speed of fan constant; If the oil smoke district cigarette vapour concentration judged is lower than the cigarette vapour concentration threshold of setting, and/or the value of this cigarette vapour concentration reduction is greater than the difference threshold of setting, then reduce rotation speed of fan; If the oil smoke district cigarette vapour concentration judged is greater than the cigarette vapour concentration threshold of setting, and/or the value of this cigarette vapour concentration increase is greater than the difference threshold of setting, then increase rotation speed of fan.
Described increase rotation speed of fan can be instant increase also can be postpone to increase; Described reduction can be instant reduction, also can be to postpone to reduce.Use delay feature, motor frequent start-stop and speed change can be prevented, cause the damage of motor.Increase blower fan wind speed, rapidly the cigarette vapour in oil smoke district can be siphoned away, prevent the fume pollution in kitchen.Reduce blower fan wind speed, while saving smoke exhaust ventilator electric energy, the impact on gas of gas range utilization ratio can also be reduced.
Described infrared light emission spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre time, testing result is more stable and reliable.
Light receiver received light line strength of the present invention, when the output signal of used light receiver is for current value, both can directly represent with exported current value, also can be the corresponding table that a light receiver output current and received light line strength are set, and obtain received light intensity value according to this corresponding table.That is, the light intensity alleged by the present invention or its variation tendency, both can refer to the current value that light receiver exports, and also can refer to according to the determined light intensity of this current value.Same, the alleged process obtaining oil smoke district cigarette vapour concentration or its variation tendency according to light receiver received light line strength of the present invention, both can be that the current value directly utilizing light receiver to export is determined, also can be utilize determined light intensity value to determine.
When the output of used light receiver is for current value, the present embodiment can preset the output current difference of a light receiver and the mapping table of cigarette vapour concentration in provided smoke exhaust ventilator.If I1, I2 are respectively the output current of light receiver one and light receiver two, the infrared energy value that w launches for light emitters, when cigarette vapour concentration value is m, I1m=f (kw), I2m=f (gw), in formula, f is the input-output characteristic formula of infrared receiving module (is the preset parameter of module, can look in the service manual of sensor), k is transmitted ray signal and emission of light signal ratio when smokescope is m, g is when smokescope is m, reflected light signal and emission of light signal ratio.The size of smokescope can be reflected by calculating (I2-I1): (I2-I1) is larger, representing that oil smoke concentration is larger; (I2-I1) less, represent that oil smoke concentration is less.
Smoke exhaust ventilator that the present embodiment provides, inside can be provided with light signal processing module and fan control module.After light receiver receives light signal, its received light line signal is sent to the light signal processing module of smoke extractor, this light signal processing module is according to the light intensity difference of two light receiver received light lines, draw the change in concentration trend of oil smoke district cigarette vapour, and sent to fan control module, fan control module, according to the change in concentration trend of oil smoke district oil smoke, adjusts the wind speed of fume exhaust fan blower.If oil smoke district cigarette vapour concentration in increase, then improves the blower fan wind speed of smoke exhaust ventilator; If oil smoke district cigarette vapour concentration in reduction, then reduces the blower fan wind speed of smoke exhaust ventilator; If oil smoke district cigarette vapour concentration is basicly stable, then the blower fan wind speed maintaining smoke exhaust ventilator is constant.Or, the strength difference of two light receiver received light lines and the mapping table of cigarette vapour concentration can be preset in light signal processing module, and/or the mapping table of the strength difference variation tendency of two light receiver received light lines and cigarette vapour change in concentration relation, according to the strength difference of two light receiver received light lines, and/or the strength difference variation tendency of two light receiver received light lines, utilize concentration and/or its variation tendency of the mapping table determination cigarette vapour preset.This concentration or variation tendency are transmitted to fan control module, and the blower fan of smoke exhaust ventilator, according to this cigarette vapour concentration or its variation tendency, is adjusted to corresponding wind speed by fan control module.
Described light signal processing module can be placed in described light receiver, processes, and result is sent to fan control module to received light signal.Described fan control module can be placed in controller of fan, and air-blower control machine, according to received light intensity or light intensity variation tendency or cigarette vapour concentration or cigarette vapour change in concentration trend signal, sends control instruction to fume exhaust fan blower.
The above embodiment is only that protection scope of the present invention is not limited thereto in order to absolutely prove the preferred embodiment that the present invention lifts.The equivalent alternative or conversion that those skilled in the art do on basis of the present invention, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (14)
1. one kind regulates the smoke exhaust ventilator of wind speed automatically, it is characterized in that, described smoke exhaust ventilator sidewall is provided with light emitters and light receiver, described light emitters can towards described smoke exhaust ventilator smoke collecting chamber emission of light, described light receiver can receive the light from smoke exhaust ventilator smoke collecting chamber, described light emitters and/or described light receiver are placed in accommodation hole, described accommodation hole is provided with device for generating air curtain towards the opening of smoke collecting chamber, described device for generating air curtain for generation of air curtain to stop that oil smoke enters described accommodation hole.
2. automatically regulate the smoke exhaust ventilator of wind speed described in claim 1, it is characterized in that, described light emitters is infrared transmitter.
3. automatically regulate the smoke exhaust ventilator of wind speed described in claim 2, it is characterized in that, described infrared light emission spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre.
4. described in claim 1, automatically regulate the smoke exhaust ventilator of wind speed, it is characterized in that, described device for generating air curtain comprises air outlet and ajutage, described air outlet is arranged at described accommodation hole below the opening of smoke collecting chamber, can air-out vertically upward, described ajutage one end and described air outlet are connected, and the other end and blower fan are connected.
5. automatically regulate the smoke exhaust ventilator machine of wind speed described in claim 4, it is characterized in that, described device for generating air curtain is provided with gas distributor.
6. automatically regulate the smoke exhaust ventilator of wind speed described in claim 4, it is characterized in that, described blower fan is the blower fan of smoke exhaust ventilator.
7. described in claim 1, automatically regulate the smoke exhaust ventilator of wind speed, it is characterized in that, the two opposite sides correspondence of described smoke exhaust ventilator is provided with light emitters and light receiver, can receive described light emitters send and the light passing smoke exhaust ventilator oil smoke district to make described light receiver.
8. automatically regulate the smoke exhaust ventilator of wind speed described in claim 7, it is characterized in that, described light emitters and light receiver correspondence are arranged at the described lampblack absorber left and right sides.
9. described in claim 1, automatically regulate the smoke exhaust ventilator of wind speed, it is characterized in that, one sidewall of described smoke exhaust ventilator is provided with a light emitters, a light receiver is being set with the same sidewall or adjacent wall that arrange light emitters, described light emitters can be being received to make described light receiver and send and the light reflected by oil smoke district.
10. automatically regulate the smoke exhaust ventilator of wind speed described in claim 9, it is characterized in that, described light emitters and light receiver are arranged at described smoke exhaust ventilator homonymy.
Automatically the smoke exhaust ventilator of wind speed is regulated described in 11. claims 1, it is characterized in that, one sidewall of described smoke exhaust ventilator is provided with a light emitters, two light receivers are being set with the same sidewall or adjacent wall that arrange light emitters, described light emitters can be being received to make described light receiver and send and the light reflected through smoke exhaust ventilator oil smoke district.
Automatically regulate the smoke exhaust ventilator of wind speed described in 12. claims 11, it is characterized in that, described two light recipients are positioned at described light emitters homonymy.
Automatically the smoke exhaust ventilator of wind speed is regulated described in 13. claims 1, it is characterized in that, one sidewall of described smoke exhaust ventilator is provided with a light emitters, light receiver one is being set with the oppose side wall arranging light emitters, light receiver two is being set with the homonymy or adjacent wall that arrange light emitters, can receive described light emitters to make described light receiver one to send and through the light in oil smoke district, light receiver two can receive described light emitters and to send and through the light of oil smoke district reflection.
Automatically regulate the smoke exhaust ventilator of wind speed described in 14. claims 13, it is characterized in that, described light recipient two is positioned at the same sidewall of described light emitters.
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| CN201410600043.3A CN105299717A (en) | 2014-08-01 | 2014-10-31 | Smoke exhauster capable of automatically adjusting wind speed |
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| CN201410375680 | 2014-08-01 | ||
| CN201410600043.3A CN105299717A (en) | 2014-08-01 | 2014-10-31 | Smoke exhauster capable of automatically adjusting wind speed |
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| CN201410600031.0A Pending CN105299716A (en) | 2014-08-01 | 2014-10-31 | Smoke exhauster as well as smoke detection method and wind speed adjusting method thereof |
| CN201410600345.0A Pending CN105318386A (en) | 2014-08-01 | 2014-10-31 | Range hood capable of regulating wind speed automatically |
| CN201410600026.XA Active CN105318379B (en) | 2014-08-01 | 2014-10-31 | Smoke exhaust ventilator and its cigarette vapour detection method and wind speed adjusting method |
| CN201410600027.4A Pending CN105318380A (en) | 2014-08-01 | 2014-10-31 | Range hood and lampblack detection method and wind speed regulating method of range hood |
| CN201410600639.3A Pending CN105299719A (en) | 2014-08-01 | 2014-10-31 | Smoke exhauster as well as smoke detection method and wind speed adjusting method thereof |
| CN201410600112.0A Active CN105318383B (en) | 2014-08-01 | 2014-10-31 | Smoke exhaust ventilator and its cigarette vapour detection method and wind speed adjusting method |
| CN201410600047.1A Pending CN105318382A (en) | 2014-08-01 | 2014-10-31 | Range hood capable of regulating wind speed automatically |
| CN201410600029.3A Active CN105318381B (en) | 2014-08-01 | 2014-10-31 | Automatic speed regulation smoke exhaust ventilator self-checking system and self checking method |
| CN201410600043.3A Pending CN105299717A (en) | 2014-08-01 | 2014-10-31 | Smoke exhauster capable of automatically adjusting wind speed |
| CN201410600344.6A Pending CN105318385A (en) | 2014-08-01 | 2014-10-31 | Wind speed regulating system and method for range hood |
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| CN201410600031.0A Pending CN105299716A (en) | 2014-08-01 | 2014-10-31 | Smoke exhauster as well as smoke detection method and wind speed adjusting method thereof |
| CN201410600345.0A Pending CN105318386A (en) | 2014-08-01 | 2014-10-31 | Range hood capable of regulating wind speed automatically |
| CN201410600026.XA Active CN105318379B (en) | 2014-08-01 | 2014-10-31 | Smoke exhaust ventilator and its cigarette vapour detection method and wind speed adjusting method |
| CN201410600027.4A Pending CN105318380A (en) | 2014-08-01 | 2014-10-31 | Range hood and lampblack detection method and wind speed regulating method of range hood |
| CN201410600639.3A Pending CN105299719A (en) | 2014-08-01 | 2014-10-31 | Smoke exhauster as well as smoke detection method and wind speed adjusting method thereof |
| CN201410600112.0A Active CN105318383B (en) | 2014-08-01 | 2014-10-31 | Smoke exhaust ventilator and its cigarette vapour detection method and wind speed adjusting method |
| CN201410600047.1A Pending CN105318382A (en) | 2014-08-01 | 2014-10-31 | Range hood capable of regulating wind speed automatically |
| CN201410600029.3A Active CN105318381B (en) | 2014-08-01 | 2014-10-31 | Automatic speed regulation smoke exhaust ventilator self-checking system and self checking method |
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2014
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- 2014-10-31 CN CN201410600026.XA patent/CN105318379B/en active Active
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- 2014-10-31 CN CN201410600029.3A patent/CN105318381B/en active Active
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| DE19509612C1 (en) * | 1995-03-16 | 1996-03-21 | Rentschler Reven Lueftungssyst | Steam evacuation hood for cooking positions |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018163001A1 (en) * | 2017-03-08 | 2018-09-13 | BSH Hausgeräte GmbH | Image processing apparatus for cooker hood and cooker hood |
| US11125445B2 (en) | 2017-03-08 | 2021-09-21 | BSH Hausgeräte GmbH | Image processing apparatus for cooker hood and cooker hood |
| CN107559921A (en) * | 2017-10-30 | 2018-01-09 | 杭州老板电器股份有限公司 | Smoke exhaust ventilator control method, apparatus and system |
| CN109140556A (en) * | 2018-09-20 | 2019-01-04 | 中山市普雪生活电器有限公司 | A kind of smoke machine intelligent on-line system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105318380A (en) | 2016-02-10 |
| CN105318383A (en) | 2016-02-10 |
| CN105299718A (en) | 2016-02-03 |
| CN105318381B (en) | 2019-09-17 |
| CN105318385A (en) | 2016-02-10 |
| CN105318383B (en) | 2019-08-09 |
| CN105318379A (en) | 2016-02-10 |
| CN105318384A (en) | 2016-02-10 |
| CN105318381A (en) | 2016-02-10 |
| CN105318386A (en) | 2016-02-10 |
| CN105318379B (en) | 2019-05-07 |
| CN105318382A (en) | 2016-02-10 |
| CN105299716A (en) | 2016-02-03 |
| CN105299719A (en) | 2016-02-03 |
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