CN105318385A - Wind speed regulating system and method for range hood - Google Patents
Wind speed regulating system and method for range hood Download PDFInfo
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- CN105318385A CN105318385A CN201410600344.6A CN201410600344A CN105318385A CN 105318385 A CN105318385 A CN 105318385A CN 201410600344 A CN201410600344 A CN 201410600344A CN 105318385 A CN105318385 A CN 105318385A
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Abstract
The invention discloses an automatic wind speed regulating system for a range hood. The automatic wind speed regulating system for the range hood comprises a lampblack detecting module and a draught fan regulating module. The lampblack detecting module is used for detecting the result of the effect of a lampblack area on light and sending the detection result to the draught fan regulating module or is used for speculating the lampblack concentration information of the lampblack area by means of the detection result and sending a speculation result to the draught fan regulating module. The draught fan regulating module is used for giving out a regulation command to a draught fan according to the detection result or the speculation result sent from the lampblack detecting module. The invention further discloses an automatic wind speed regulating method for the range hood. According the automatic wind speed regulating system for the range hood, the wind speed of the draught fan of the range hood can be regulated automatically, operation is convenient, and energy saving is achieved while contamination caused by kitchen lampblack is fully prevented.
Description
Technical field
The present invention relates to a kind of smoke exhaust ventilator wind speed automatic regulating system and method.
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 wind speed automatic regulating system and method, 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 wind speed automatic regulating system, comprise oil smoke detecting module and blower fan regulation and control module, described oil smoke detecting module detection oil smoke district is to the exercising result of light, and sent to by result of detection described blower fan to regulate and control module, or utilize result of that probe to infer oil smoke district oil smoke concentration information, and this estimation result sent to described blower fan to regulate and control module; The result of detection that described blower fan regulation and control module is sent according to described oil smoke detecting module and/or estimation result, send adjustment instruction to blower fan.
Specifically, described oil smoke detecting module comprises light emission module, light receiver module and result of detection processing module, and described light emission module launches IR towards oil smoke district, described light receiver module receive described light emission module send after through the light of the transmission of oil smoke district and/or reflection, described result of detection processing module directly by detected oil smoke district to the exercising result of light, or described light receiver module receive the difference of different reflected light signal, or described light receiver module receive the difference of reflected signal and transmission signal, blower fan is sent to regulate and control module, or, according to the light intensity signal that described light receiver module receives, or described light receiver module receive the difference of different reflected light signal, or described light receiver module receive the difference of reflected signal and transmission signal, judge the change in concentration trend of oil smoke district oil smoke or the concentration of oil smoke and send to blower fan to regulate and control module.
Described result of detection processing module is preset with light intensity signal and oil smoke concentration or its variation tendency mapping table, the difference of different reflected light signal and the difference of oil smoke concentration or its variation tendency mapping table or reflected signal and transmission signal and oil smoke concentration or its variation tendency mapping table, described result of detection processing module receives light signal according to described light receiver module, utilize corresponding mapping table, determine oil smoke district oil smoke concentration or its variation tendency.
Specifically, described blower fan regulation and control module comprises oil smoke signal receiving module, oil smoke signal processing module and fan speed regulation instruction sending module, described oil smoke signal receiving module receives the result of detection that described oil smoke detecting module sends, and is sent to oil smoke signal processing module; Oil smoke signal processing module, according to result of that probe, forms the adjustment instruction of blower fan wind speed and sends to the blower fan of smoke exhaust ventilator through fan speed regulation instruction sending module.
Described oil smoke signal processing module is preset with light intensity and blower fan wind speed information mapping table, reflection ray strength difference and blower fan wind speed information mapping table, reflection ray and transmitted ray difference and blower fan wind speed information mapping table and/or oil smoke concentration information and blower fan wind speed information mapping table, the result of detection that described oil smoke signal processing module sends according to oil smoke detecting module, utilizes the instruction of corresponding mapping table determination fan speed regulation.
As another aspect of the present invention, relate to a kind of smoke exhaust ventilator wind speed Automatic adjustment method, the method detection oil smoke district to the exercising result of light, and utilizes this exercising result to adjust blower fan wind speed.The method can also utilize this exercising result to infer oil smoke concentration or its variation tendency in oil smoke district, and adjusts blower fan wind speed according to this estimation result.
Specifically, the exercising result of described detection oil smoke district to light refers to, detection is by determining that light source sends, and through the light intensity in described oil smoke district and/or by the light intensity of described oil smoke district reflection, or receive the difference of different reflected light signal, or receive the difference of reflected signal and transmission signal.
Described light can be IR or laser, when use IR time, spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre.The described light intensity output current of light receiver represents.
As one of embodiment, adjustment is carried out to blower fan wind speed and refers to, by determining that light source sends, and increase through the light intensity in described oil smoke district and higher than predetermined threshold value, then reduce blower fan wind speed; By determining that light source sends, and reduce through the light intensity in described oil smoke district and lower than predetermined threshold value, then increase blower fan wind speed; By determining that light source sends, and change in preset range through the light intensity in described oil smoke district, then maintain blower fan wind speed constant.
As one of embodiment, adjustment is carried out to blower fan wind speed and refers to, by determining that light source sends, and reduced by the light intensity of described oil smoke district reflection and lower than predetermined threshold value, then reduce blower fan wind speed; By determining that light source sends, and increased by the light intensity of described oil smoke district reflection and higher than predetermined threshold value, then increase blower fan wind speed; By determining that light source sends, and changed in the scope preset by the light intensity of described oil smoke district reflection, then maintain blower fan wind speed constant.
As one of embodiment, carry out adjustment refer to blower fan wind speed, the signal difference change of received light line within the scope of the difference threshold of setting, then maintains blower fan wind speed constant; Receive reflection ray signal difference be greater than the difference threshold of setting, then increase rotation speed of fan; The signal difference of received light line is less than the difference threshold of setting, then reduce rotation speed of fan.
As one of embodiment, carry out adjustment refer to blower fan wind speed, the strong signal difference change of received light line within the scope of the difference threshold of setting, then keeps rotation speed of fan constant; Receive the difference threshold that difference that transmitted ray intensity deducts received reflection ray intensity is greater than setting, then reduce blower fan wind speed; Receive the difference threshold that difference that transmitted ray intensity deducts received reflection ray intensity is less than setting, then increase blower fan wind speed; Or, receive the difference threshold that difference that reflection ray intensity deducts received transmitted ray intensity is greater than setting, then increase blower fan wind speed; Receive the difference threshold that difference that reflection ray intensity deducts received transmitted ray intensity is less than setting, then reduction blower fan wind speed.
As one of embodiment, as follows according to the method adjusted blower fan wind speed the oil smoke concentration in oil smoke district or the estimation result of its variation tendency:
The oil smoke concentration in oil smoke district changes in the scope preset, then maintain blower fan wind speed constant;
The oil smoke concentration in oil smoke district increases and higher than the threshold value preset, then increases blower fan wind speed;
The oil smoke concentration in oil smoke district reduces and lower than the threshold value preset, then reduces blower fan wind speed.
Described increase blower fan wind speed can be instant increase also can be postpone to increase; Described reduction blower fan wind speed can be instant reduction, also can be to postpone to reduce.
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 to 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, use delay feature, motor frequent start-stop and speed change can be prevented, cause the damage of motor.
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 smoke exhaust ventilator wind speed automatic regulating system schematic diagram involved in the present invention;
1 is light emitters; 2 is light receiver; 3 is accommodation hole.
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 uses the smoke exhaust ventilator of smoke exhaust ventilator wind speed automatic regulating system provided by the present invention and method, in the smoke collecting chamber left and right sides, wall correspondence is provided with accommodation hole 3, and 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.
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.
The present embodiment provides smoke exhaust ventilator wind speed automatic regulating system, comprise oil smoke detecting module and blower fan regulation and control module, described oil smoke detecting module detection oil smoke district is to the exercising result of light, and sent to by result of detection described blower fan to regulate and control module, or utilize result of that probe to infer oil smoke district oil smoke concentration information, and this estimation result sent to described blower fan to regulate and control module; The result of detection that described blower fan regulation and control module is sent according to described oil smoke detecting module or estimation result, send adjustment instruction to blower fan.
Described oil smoke detecting module comprises light emission module, light receiver module and result of detection processing module, and described light emission module launches IR towards oil smoke district; Described light receiver module receive described light emission module send after through the light of oil smoke district transmission; Described result of detection processing module directly by detected oil smoke district to the exercising result of light, blower fan is sent to regulate and control module, or, according to the light intensity signal that described light receiver module receives, judge the change in concentration trend of oil smoke district oil smoke or the concentration of oil smoke and send to blower fan to regulate and control module.
Described result of detection processing module is preset with light intensity signal and oil smoke concentration or its variation tendency mapping table, described result of detection processing module receives light signal according to described light receiver module, utilize corresponding mapping table, determine oil smoke district oil smoke concentration or its variation tendency.
Described blower fan regulation and control module comprises oil smoke signal receiving module, oil smoke signal processing module and fan speed regulation instruction sending module, described oil smoke signal receiving module receives the result of detection that described oil smoke detecting module sends, and is sent to oil smoke signal processing module; Oil smoke signal processing module, according to result of that probe, forms the adjustment instruction of blower fan wind speed and sends to the blower fan of smoke exhaust ventilator through fan speed regulation instruction sending module.
Described oil smoke signal processing module is preset with light intensity and blower fan wind speed information mapping table and/or oil smoke concentration information and blower fan wind speed information mapping table, the result of detection that described oil smoke signal processing module sends according to oil smoke detecting module, utilizes the instruction of corresponding mapping table determination fan speed regulation.
The present embodiment provides smoke exhaust ventilator wind speed Automatic adjustment method, and detection oil smoke district to the exercising result of light, and utilizes this exercising result to adjust blower fan wind speed.The method can also utilize this exercising result to infer oil smoke concentration or its variation tendency in oil smoke district, and adjusts blower fan wind speed according to this estimation result.
The exercising result of described detection oil smoke district to light refers to, detects by determining that light source sends, and passes the light intensity in described oil smoke district.
Described light can be IR or laser, when use IR time, spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre.The described light intensity output current of light receiver represents.
Carry out adjustment to blower fan wind speed to refer to, by determining that light source sends, and increase through the light intensity in described oil smoke district and higher than predetermined threshold value, then reduce blower fan wind speed; By determining that light source sends, and reduce through the light intensity in described oil smoke district and lower than predetermined threshold value, then increase blower fan wind speed; By determining that light source sends, and change in preset range through the light intensity in described oil smoke district, then maintain blower fan wind speed constant.
As follows according to the method adjusted blower fan wind speed the oil smoke concentration in oil smoke district or the estimation result of its variation tendency:
The oil smoke concentration in oil smoke district changes in the scope preset, then maintain blower fan wind speed constant;
The oil smoke concentration in oil smoke district increases and higher than the threshold value preset, then increases blower fan wind speed;
The oil smoke concentration in oil smoke district reduces and lower than the threshold value preset, then reduces blower fan wind speed.
Described increase blower fan wind speed can be instant increase also can be postpone to increase; Described reduction blower fan wind speed can be instant reduction, also can be to postpone to reduce.
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.
Embodiment 2
As shown in Figure 2 and Figure 5, the present embodiment uses the smoke exhaust ventilator of smoke exhaust ventilator wind speed automatic regulating system provided by the present invention and method, is respectively arranged with accommodation hole 3 at sidewall, and 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.
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.
The present embodiment provides smoke exhaust ventilator wind speed automatic regulating system, comprise oil smoke detecting module and blower fan regulation and control module, described oil smoke detecting module detection oil smoke district is to the exercising result of light, and sent to by result of detection described blower fan to regulate and control module, or utilize result of that probe to infer oil smoke district oil smoke concentration information, and this estimation result sent to described blower fan to regulate and control module; The result of detection that described blower fan regulation and control module is sent according to described oil smoke detecting module or estimation result, send adjustment instruction to blower fan.
Described oil smoke detecting module comprises light emission module, light receiver module and result of detection processing module, and described light emission module launches IR towards oil smoke district; Described light receiver module receives the light reflected through oil smoke district after described light emission module sends; Described result of detection processing module directly by detected oil smoke district to the exercising result of light, blower fan is sent to regulate and control module, or, according to the light intensity signal that described light receiver module receives, judge the change in concentration trend of oil smoke district oil smoke or the concentration of oil smoke and send to blower fan to regulate and control module.
Described result of detection processing module is preset with light intensity signal and oil smoke concentration or its variation tendency mapping table, described result of detection processing module receives light signal according to described light receiver module, utilize corresponding mapping table, determine oil smoke district oil smoke concentration or its variation tendency.
Described blower fan regulation and control module comprises oil smoke signal receiving module, oil smoke signal processing module and fan speed regulation instruction sending module, described oil smoke signal receiving module receives the result of detection that described oil smoke detecting module sends, and is sent to oil smoke signal processing module; Oil smoke signal processing module, according to result of that probe, forms the adjustment instruction of blower fan wind speed and sends to the blower fan of smoke exhaust ventilator through fan speed regulation instruction sending module.
Described oil smoke signal processing module is preset with light intensity and blower fan wind speed information mapping table, and/or oil smoke concentration information and blower fan wind speed information mapping table, the result of detection that described oil smoke signal processing module sends according to oil smoke detecting module, utilizes the instruction of corresponding mapping table determination fan speed regulation.
The present embodiment provides smoke exhaust ventilator wind speed Automatic adjustment method, and detection oil smoke district to the exercising result of light, and utilizes this exercising result to adjust blower fan wind speed.The method can also utilize this exercising result to infer oil smoke concentration or its variation tendency in oil smoke district, and adjusts blower fan wind speed according to this estimation result.
The exercising result of described detection oil smoke district to light refers to, detects by determining that light source sends, by the light intensity of described oil smoke district reflection.
Described light can be IR or laser, when use IR time, spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre.The described light intensity output current of light receiver represents.
Carry out adjustment to blower fan wind speed to refer to, by determining that light source sends, and reduced by the light intensity of described oil smoke district reflection and lower than predetermined threshold value, then reduce blower fan wind speed; By determining that light source sends, and increased by the light intensity of described oil smoke district reflection and higher than predetermined threshold value, then increase blower fan wind speed; By determining that light source sends, and changed in the scope preset by the light intensity of described oil smoke district reflection, then maintain blower fan wind speed constant.
As follows according to the method adjusted blower fan wind speed the oil smoke concentration in oil smoke district or the estimation result of its variation tendency:
The oil smoke concentration in oil smoke district changes in the scope preset, then maintain blower fan wind speed constant;
The oil smoke concentration in oil smoke district increases and higher than the threshold value preset, then increases blower fan wind speed;
The oil smoke concentration in oil smoke district reduces and lower than the threshold value preset, then reduces blower fan wind speed.
Described increase blower fan wind speed can be instant increase also can be postpone to increase; Described reduction blower fan wind speed can be instant reduction, also can be to postpone to reduce.
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.
Embodiment 3
As shown in Figure 3 and Figure 5, the present embodiment uses the smoke exhaust ventilator of smoke exhaust ventilator wind speed automatic regulating system provided by the present invention and method, three accommodation holes, 3, light emitters 1 is provided with 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.
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.
The present embodiment provides smoke exhaust ventilator wind speed automatic regulating system, comprise oil smoke detecting module and blower fan regulation and control module, described oil smoke detecting module detection oil smoke district is to the exercising result of light, and sent to by result of detection described blower fan to regulate and control module, or utilize result of that probe to infer oil smoke district oil smoke concentration information, and this estimation result sent to described blower fan to regulate and control module; The result of detection that described blower fan regulation and control module is sent according to described oil smoke detecting module or estimation result, send adjustment instruction to blower fan.
Described oil smoke detecting module comprises light emission module, light receiver module and result of detection processing module, and described light emission module launches IR towards oil smoke district; Described light receiver module receives the light reflected through oil smoke district after described light emission module sends; Described result of detection processing module directly by described light receiver module receive the difference of different reflected light signal, blower fan is sent to regulate and control module, or, according to described light receiver module receive the difference of different reflected light signal, judge the change in concentration trend of oil smoke district oil smoke or the concentration of oil smoke and send to blower fan to regulate and control module.
Described result of detection processing module is preset with the difference of different reflected light signal and oil smoke concentration or its variation tendency mapping table, described result of detection processing module receives light signal according to described light receiver module, utilize corresponding mapping table, determine oil smoke district oil smoke concentration or its variation tendency.
Described blower fan regulation and control module comprises oil smoke signal receiving module, oil smoke signal processing module and fan speed regulation instruction sending module, described oil smoke signal receiving module receives the result of detection that described oil smoke detecting module sends, and is sent to oil smoke signal processing module; Oil smoke signal processing module, according to result of that probe, forms the adjustment instruction of blower fan wind speed and sends to the blower fan of smoke exhaust ventilator through fan speed regulation instruction sending module.
Described oil smoke signal processing module is preset with reflection ray strength difference and blower fan wind speed information mapping table, and/or oil smoke concentration information and blower fan wind speed information mapping table, the result of detection that described oil smoke signal processing module sends according to oil smoke detecting module, utilizes the instruction of corresponding mapping table determination fan speed regulation.
The present embodiment provides smoke exhaust ventilator wind speed Automatic adjustment method, and detection oil smoke district to the exercising result of light, and utilizes this exercising result to adjust blower fan wind speed.The method can also utilize this exercising result to infer oil smoke concentration or its variation tendency in oil smoke district, and adjusts blower fan wind speed according to this estimation result.
The exercising result of described detection oil smoke district to light refers to, detects by determining that light source sends, and by the difference of the light intensity of described oil smoke district reflection.
Described light can be IR or laser, when use IR time, spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre.The described light intensity output current of light receiver represents.
Carry out adjustment to blower fan wind speed to refer to, the signal difference change of received light line within the scope of the difference threshold of setting, then maintains blower fan wind speed constant; Receive reflection ray signal difference be greater than the difference threshold of setting, then increase rotation speed of fan; The signal difference of received light line is less than the difference threshold of setting, then reduce rotation speed of fan.
As follows according to the method adjusted blower fan wind speed the oil smoke concentration in oil smoke district or the estimation result of its variation tendency:
The oil smoke concentration in oil smoke district changes in the scope preset, then maintain blower fan wind speed constant;
The oil smoke concentration in oil smoke district increases and higher than the threshold value preset, then increases blower fan wind speed;
The oil smoke concentration in oil smoke district reduces and lower than the threshold value preset, then reduces blower fan wind speed.
Described increase blower fan wind speed can be instant increase also can be postpone to increase; Described reduction blower fan wind speed can be instant reduction, also can be to postpone to reduce.
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.
Embodiment 4
As shown in Figure 4 and Figure 5, the present embodiment uses the smoke exhaust ventilator of smoke exhaust ventilator wind speed automatic regulating system provided by the present invention and method, three accommodation holes, 3, light emitters 1 is provided with 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.
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.
The present embodiment provides smoke exhaust ventilator wind speed automatic regulating system, comprise oil smoke detecting module and blower fan regulation and control module, described oil smoke detecting module detection oil smoke district is to the exercising result of light, and sent to by result of detection described blower fan to regulate and control module, or utilize result of that probe to infer oil smoke district oil smoke concentration information, and this estimation result sent to described blower fan to regulate and control module; The result of detection that described blower fan regulation and control module is sent according to described oil smoke detecting module or estimation result, send adjustment instruction to blower fan.
Described oil smoke detecting module comprises light emission module, light receiver module and result of detection processing module, and described light emission module launches IR towards oil smoke district; Described light receiver module receive described light emission module send after through the light of oil smoke district transmittance and reflectance; Described result of detection processing module directly will, described light receiver module receive the difference of reflected signal and transmission signal, blower fan is sent to regulate and control module, or, according to described light receiver module receive the difference of reflected signal and transmission signal, judge the change in concentration trend of oil smoke district oil smoke or the concentration of oil smoke and send to blower fan to regulate and control module.
Described result of detection processing module presets the difference of reflected signal and transmission signal and oil smoke concentration or its variation tendency mapping table, described result of detection processing module receives light signal according to described light receiver module, utilize corresponding mapping table, determine oil smoke district oil smoke concentration or its variation tendency.
Described blower fan regulation and control module comprises oil smoke signal receiving module, oil smoke signal processing module and fan speed regulation instruction sending module, described oil smoke signal receiving module receives the result of detection that described oil smoke detecting module sends, and is sent to oil smoke signal processing module; Oil smoke signal processing module, according to result of that probe, forms the adjustment instruction of blower fan wind speed and sends to the blower fan of smoke exhaust ventilator through fan speed regulation instruction sending module.
Described oil smoke signal processing module is preset with, reflection ray and transmitted ray difference and blower fan wind speed information mapping table and/or oil smoke concentration information and blower fan wind speed information mapping table, the result of detection that described oil smoke signal processing module sends according to oil smoke detecting module, utilizes the instruction of corresponding mapping table determination fan speed regulation.
The present embodiment provides smoke exhaust ventilator wind speed Automatic adjustment method, and detection oil smoke district to the exercising result of light, and utilizes this exercising result to adjust blower fan wind speed.The method can also utilize this exercising result to infer oil smoke concentration or its variation tendency in oil smoke district, and adjusts blower fan wind speed according to this estimation result.
The exercising result of described detection oil smoke district to light refers to, detects by determining that light source sends, and through the light intensity in described oil smoke district with by the light intensity of described oil smoke district reflection, and calculate the difference of received reflected signal and transmission signal.
Described light can be IR or laser, when use IR time, spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre.The described light intensity output current of light receiver represents.
Carry out adjustment to blower fan wind speed to refer to, the strong signal difference change of received light line within the scope of the difference threshold of setting, then keeps rotation speed of fan constant; Receive the difference threshold that difference that transmitted ray intensity deducts received reflection ray intensity is greater than setting, then reduce blower fan wind speed; Receive the difference threshold that difference that transmitted ray intensity deducts received reflection ray intensity is less than setting, then increase blower fan wind speed; Or, receive the difference threshold that difference that reflection ray intensity deducts received transmitted ray intensity is greater than setting, then increase blower fan wind speed; Receive the difference threshold that difference that reflection ray intensity deducts received transmitted ray intensity is less than setting, then reduction blower fan wind speed.
As follows according to the method adjusted blower fan wind speed the oil smoke concentration in oil smoke district or the estimation result of its variation tendency:
The oil smoke concentration in oil smoke district changes in the scope preset, then maintain blower fan wind speed constant;
The oil smoke concentration in oil smoke district increases and higher than the threshold value preset, then increases blower fan wind speed;
The oil smoke concentration in oil smoke district reduces and lower than the threshold value preset, then reduces blower fan wind speed.
Described increase blower fan wind speed can be instant increase also can be postpone to increase; Described reduction blower fan wind speed can be instant reduction, also can be to postpone to reduce.
Two light receivers can receive, reflect by oil smoke district naturally there is a difference between the light intensity of transmission.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.
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.
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 (16)
1. a smoke exhaust ventilator wind speed automatic regulating system, is characterized in that, comprises oil smoke detecting module and blower fan regulation and control module,
Result of detection to the exercising result of light, and sends to described blower fan to regulate and control module by described oil smoke detecting module detection oil smoke district, or utilizes result of that probe to infer oil smoke district oil smoke concentration information, and this estimation result is sent to described blower fan to regulate and control module;
The result of detection that described blower fan regulation and control module is sent according to described oil smoke detecting module and/or estimation result, send adjustment instruction to blower fan.
2. smoke exhaust ventilator wind speed automatic regulating system described in claim 1, is characterized in that, described oil smoke detecting module comprises light emission module, light receiver module and result of detection processing module,
Described light emission module launches IR towards oil smoke district;
Described light receiver module receive described light emission module send after through the light of the transmission of oil smoke district and/or reflection;
Described result of detection processing module directly by detected oil smoke district to the exercising result of light, or described light receiver module receive the difference of different reflected light signal, or described light receiver module receive the difference of reflected signal and transmission signal, send to blower fan to regulate and control module, or
According to the light intensity signal that described light receiver module receives, or described light receiver module receive the difference of different reflected light signal, or described light receiver module receive the difference of reflected signal and transmission signal, judge the concentration of oil smoke district oil smoke or its variation tendency and send to blower fan to regulate and control module.
3. smoke exhaust ventilator wind speed automatic regulating system described in claim 2, it is characterized in that, described result of detection processing module is preset with light intensity signal and oil smoke concentration or its variation tendency mapping table, the difference of different reflected light signal and the difference of oil smoke concentration or its variation tendency mapping table or reflected signal and transmission signal and oil smoke concentration or its variation tendency mapping table, described result of detection processing module receives light signal according to described light receiver module, utilize corresponding mapping table, determine oil smoke district oil smoke concentration or its variation tendency.
4. smoke exhaust ventilator wind speed automatic regulating system described in claim 1, is characterized in that, described blower fan regulation and control module comprises oil smoke signal receiving module, oil smoke signal processing module and fan speed regulation instruction sending module,
Described oil smoke signal receiving module receives the result of detection that described oil smoke detecting module sends, and is sent to oil smoke signal processing module;
Oil smoke signal processing module, according to result of that probe, forms the adjustment instruction of blower fan wind speed and sends to the blower fan of smoke exhaust ventilator through fan speed regulation instruction sending module.
5. smoke exhaust ventilator wind speed automatic regulating system described in claim 4, it is characterized in that, described oil smoke signal processing module is preset with light intensity and blower fan wind speed information mapping table, reflection ray strength difference and blower fan wind speed information mapping table, reflection ray and transmitted ray difference and blower fan wind speed information mapping table and/or oil smoke concentration information and blower fan wind speed information mapping table, the result of detection that described oil smoke signal processing module sends according to oil smoke detecting module, utilizes the instruction of corresponding mapping table determination fan speed regulation.
6. a smoke exhaust ventilator wind speed Automatic adjustment method, is characterized in that, the method detection oil smoke district to the exercising result of light, and utilizes this exercising result to adjust blower fan wind speed.
7. method described in claim 6, is characterized in that, the method detection oil smoke district, to the exercising result of light, utilizes this exercising result to infer oil smoke concentration or its variation tendency in oil smoke district, and adjusts blower fan wind speed according to this estimation result.
8. the arbitrary described method of claim 6 or 7, it is characterized in that, the exercising result of described detection oil smoke district to light refers to, detection is by determining that light source sends, and through the light intensity in described oil smoke district and/or by the light intensity of described oil smoke district reflection, or receive the difference of different reflected light signal, or receive the difference of reflected signal and transmission signal.
9. method described in claim 8, is characterized in that, described light is IR, spectral region 600 wave numbers/centimetre to 4000 wave numbers/centimetre.
10. method described in claim 8, is characterized in that, the described light intensity output current of light receiver represents.
Method described in 11. claims 8, is characterized in that, carries out adjustment refer to blower fan wind speed,
By determining that light source sends, and increase through the light intensity in described oil smoke district and higher than predetermined threshold value, then reduce blower fan wind speed;
By determining that light source sends, and reduce through the light intensity in described oil smoke district and lower than predetermined threshold value, then increase blower fan wind speed;
By determining that light source sends, and change in preset range through the light intensity in described oil smoke district, then maintain blower fan wind speed constant.
Method described in 12. claims 8, is characterized in that, carries out adjustment refer to blower fan wind speed,
By determining that light source sends, and reduced by the light intensity of described oil smoke district reflection and lower than predetermined threshold value, then reduce blower fan wind speed;
By determining that light source sends, and increased by the light intensity of described oil smoke district reflection and higher than predetermined threshold value, then increase blower fan wind speed;
By determining that light source sends, and changed in the scope preset by the light intensity of described oil smoke district reflection, then maintain blower fan wind speed constant.
Method described in 13. claims 8, is characterized in that, carries out adjustment refer to blower fan wind speed,
The signal difference change of received light line within the scope of the difference threshold of setting, then maintains blower fan wind speed constant;
Receive reflection ray signal difference be greater than the difference threshold of setting, then increase rotation speed of fan;
The signal difference of received light line is less than the difference threshold of setting, then reduce rotation speed of fan.
Method described in 14. claims 8, is characterized in that, carries out adjustment refer to blower fan wind speed,
The strong signal difference change of received light line within the scope of the difference threshold of setting, then keeps rotation speed of fan constant;
Receive the difference threshold that difference that transmitted ray intensity deducts received reflection ray intensity is greater than setting, then reduce blower fan wind speed;
Receive the difference threshold that difference that transmitted ray intensity deducts received reflection ray intensity is less than setting, then increase blower fan wind speed;
Or,
Receive the difference threshold that difference that reflection ray intensity deducts received transmitted ray intensity is greater than setting, then increase blower fan wind speed;
Receive the difference threshold that difference that reflection ray intensity deducts received transmitted ray intensity is less than setting, then reduction blower fan wind speed.
Method described in 15. claims 8, is characterized in that, as follows according to the method adjusted blower fan wind speed the oil smoke concentration in oil smoke district or the estimation result of its variation tendency:
The oil smoke concentration in oil smoke district changes in the scope preset, then maintain blower fan wind speed constant;
The oil smoke concentration in oil smoke district increases and higher than the threshold value preset, then increases blower fan wind speed;
The oil smoke concentration in oil smoke district reduces and lower than the threshold value preset, then reduces blower fan wind speed.
Method described in 16. any one of claim 11-15, is characterized in that, described increase blower fan wind speed can be instant increase also can be postpone to increase; Described reduction blower fan wind speed can be instant reduction, also can be to postpone to reduce.
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| CN201410600344.6A CN105318385A (en) | 2014-08-01 | 2014-10-31 | Wind speed regulating system and method for range hood |
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| CN201410600344.6A 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 |
| 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 |
| CN201410600043.3A Pending CN105299717A (en) | 2014-08-01 | 2014-10-31 | Smoke exhauster capable of automatically adjusting wind speed |
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Also Published As
| Publication number | Publication date |
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| CN105318380A (en) | 2016-02-10 |
| CN105318383A (en) | 2016-02-10 |
| CN105299718A (en) | 2016-02-03 |
| CN105299717A (en) | 2016-02-03 |
| CN105318381B (en) | 2019-09-17 |
| 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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Application publication date: 20160210 |
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