CN105318384A

CN105318384A - Range hood and wind speed regulating system and method thereof

Info

Publication number: CN105318384A
Application number: CN201410600325.3A
Authority: CN
Inventors: 王定远; 刘杰; 孙珺超; 高希成; 武洪舟; 唐林强
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd
Priority date: 2014-08-01
Filing date: 2014-10-31
Publication date: 2016-02-10
Also published as: CN105318383A; CN105318379B; CN105299719A; CN105318386A; CN105318381A; CN105299718A; CN105299717A; CN105318383B; CN105318380A; CN105318385A; CN105318382A; CN105299716A; CN105318379A; CN105318381B

Abstract

The invention discloses a range hood. The range hood comprises a key for starting manual regulation of the wind speed, a key for starting automatic regulation of the wind speed, a light emitter and a light receiver. The light emitter can emit light towards a lampblack collection cavity of the range hood. The light receiver can receive the light which is emitted by the light emitter and penetrates through the lampblack collection cavity or reflected by lampblack in the lampblack collection cavity. After a wind speed regulating command is emitted by the key for manual regulation of the wind speed, the wind speed of the range hood is regulated by according to the wind speed regulation command. After an automatic wind speed regulating command is emitted by the key for starting automatic regulation of the wind speed, the wind speed of the range hood is regulated according to the information of the light which is received by the light receiver and emitted by the light emitter and penetrates through the lampblack in the lampblack collection cavity or is reflected by the lampblack in the lampblack collection cavity. According to the range hood capable of regulating the wind speed automatically, the wind speed of a draught fan can be regulated automatically, operation is convenient, and energy saving is achieved while contamination caused by kitchen lampblack is fully prevented.

Description

Smoke exhaust ventilator and wind speed regulator control system thereof and method

Technical field

The present invention relates to a kind of smoke exhaust ventilator and wind speed regulator control system thereof 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 and wind speed regulator control system thereof 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, comprise the button of button that threshold wind velocity manually regulates and controls, threshold wind velocity auto-control, light emitters and light receiver, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light passing smoke collecting chamber oil smoke or reflected by smoke collecting chamber oil smoke, after the button that described threshold wind velocity manually regulates and controls sends wind speed regulation and control instruction, described smoke exhaust ventilator is according to wind speed regulation and control instruction adjustment wind speed; After the button of described threshold wind velocity auto-control sends the instruction of wind speed auto-control, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.

Described light emitters is IR transmitter or generating laser.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.

The button that described threshold wind velocity manually regulates and controls refers to that wind speed manually regulates and controls button.Manually regulate and control button at smoke exhaust ventilator wind speed, namely one grade of wind speed button, second gear wind speed button etc., when being pressed, smoke exhaust ventilator enters manual regulation and control model, and blower fan, according to pressed key command, provides corresponding wind speed.

The button of described threshold wind velocity auto-control refers to smoke exhaust ventilator manual/auto wind speed regulation and control switch key.After smoke exhaust ventilator manual/auto wind speed regulation and control switch key is pressed, smoke exhaust ventilator enters wind speed auto-control pattern, according to light receiver received light line information, and adjustment blower fan wind speed automatically.Described smoke exhaust ventilator manual/auto wind speed regulation and control switch key can refer to power key, and in the case, namely length enter wind speed auto-control pattern by power key.

Specifically, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass smoke collecting chamber oil smoke or the light intensity that reflected by smoke collecting chamber oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

Another aspect of the present invention, relates to a kind of fume exhauster velocity modulation Ore-controlling Role, comprises the manual regulator control system of wind speed and wind speed automatic regulating system, and in the manual regulator control system of described wind speed, smoke exhaust ventilator is according to the wind speed regulation and control instruction adjustment wind speed of manually input; Described wind speed automatic regulating system comprises light emitters and light receiver, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light passing smoke collecting chamber oil smoke or reflected by smoke collecting chamber oil smoke, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.

Described light emitters is IR transmitter or generating laser.

3rd aspect of the present invention, relate to a kind of fume exhauster velocity modulation control method, comprise the manual control methods of wind speed and wind speed auto-control mode, the manual control methods of described wind speed and wind speed auto-control mode switch in the following way: smoke exhaust ventilator in the energized state, wind speed manually regulates and controls button and is pressed, then the manual control methods of threshold wind velocity; Power knob is long pressed or manual/auto switching push button is pressed, then threshold wind velocity auto-control mode.

Specifically, described wind speed auto-control mode refers to, the light receiver of smoke exhaust ventilator receives light emitters and sends and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.The light receiver of described smoke exhaust ventilator receives light emitters and sends and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass smoke collecting chamber oil smoke or the light intensity that reflected by smoke collecting chamber oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

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.

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;

1 is light emitters; 2 is light receiver; 3 is accommodation hole; 4 power keys; 5 one grades of wind-force buttons; 6 second gear wind-force buttons; 7 wind speed manually automatically switch key.

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, the smoke exhaust ventilator that the present embodiment provides, comprise button 5 and 6, power key 4 and the wind speed manually automatic switchover key 7 that threshold wind velocity manually regulates and controls, light emitters 1 and light receiver 2, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light passing smoke collecting chamber oil smoke, after the button that described threshold wind velocity manually regulates and controls sends wind speed regulation and control instruction, described smoke exhaust ventilator is according to wind speed regulation and control instruction adjustment wind speed; After the button of described threshold wind velocity auto-control sends the instruction of wind speed auto-control, described smoke exhaust ventilator received according to described light receiver, is sent and pass the light information of smoke collecting chamber oil smoke by described light emitters, the wind speed of adjustment smoke exhaust ventilator.

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.

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.

Manually regulate and control button at smoke exhaust ventilator wind speed, namely one grade of wind speed button, second gear wind speed button etc., when being pressed, smoke exhaust ventilator enters manual regulation and control model, and blower fan, according to pressed key command, provides corresponding wind speed.

After smoke exhaust ventilator manual/auto wind speed regulation and control switch key is pressed, smoke exhaust ventilator enters wind speed auto-control pattern, according to light receiver received light line information, and adjustment blower fan wind speed automatically.

The fume exhauster velocity modulation Ore-controlling Role that the present embodiment provides, comprises the manual regulator control system of wind speed and wind speed automatic regulating system, and in the manual regulator control system of described wind speed, smoke exhaust ventilator is according to the wind speed regulation and control instruction adjustment wind speed of manually input; Described wind speed automatic regulating system comprises light emitters and light receiver, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light passing smoke collecting chamber oil smoke, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass the light information of smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.

Described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass the light information of smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass light intensity or its variation tendency of smoke collecting chamber oil smoke, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

The present embodiment provides fume exhauster velocity modulation control method, comprise the manual control methods of wind speed and wind speed auto-control mode, the manual control methods of described wind speed and wind speed auto-control mode switch in the following way: smoke exhaust ventilator in the energized state, wind speed manually regulates and controls button and is pressed, then the manual control methods of threshold wind velocity; Manual/auto switching push button is pressed, then threshold wind velocity auto-control mode.

Described wind speed auto-control mode refers to, the light receiver of smoke exhaust ventilator receives light emitters and sends and pass the light information of smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.The light receiver of described smoke exhaust ventilator receives light emitters and sends and pass the light information of smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass light intensity or its variation tendency of smoke collecting chamber oil smoke, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

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.

Automatic adjustment and manual adjustments two control signal sources are all received on power panel by serial ports, to control lampblack absorber work.After power panel receives the data that serial ports sends, according to derived data wherein, such as Frame the 3rd, 4,5,6(and Prx_IDdata0, Prx_IDdata1, Prx_IDdata2, Prx_IDdata3) byte, determine Data Source, and according to the control information of Data Source differentiating and processing.System is divided into two kinds of mode of operations, i.e. manual mode and automatic mode.Concrete processing mode can be such as (suppose that the address of control panel is 0x000x000x000x00, the address of Smoke Detection module is 0x000x000x000x01):

In order to reduce button, the experience of intelligence is provided to user, the present invention can consider to save mode switching key, when pressing speed governing button (shift-up key or the downshift key) on control panel as user, system thinks that user wishes to obtain the control to lampblack absorber, then be shielded to other signals source except control panel, and be manual mode by display floater display present mode.When user wishes to switch back automatic mode, length is only needed to press power key.

If data address is 0x000x000x000x01, and be variable rate data, then show that Data Source is infrared detection module, namely control lampblack absorber work according to variable rate data;

If data address is 0x000x000x000x00, and be variable rate data, be then shown to be user operation control panel, then lampblack absorber is adjusted to the rotating speed in information frame, and mask all control datas that address is 0x000x000x000x01;

If power key is long-time high level (such as, the burst length is more than 2s), recover the Signal reception to all signal sources, namely recover automatically to control.

Embodiment 2

As shown in Figure 2, the smoke exhaust ventilator that the present embodiment provides, comprise button 5 and 6, power key 4 and the wind speed manually automatic switchover key 7 that threshold wind velocity manually regulates and controls, light emitters 1 and light receiver 2, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light reflected by smoke collecting chamber oil smoke, after the button that described threshold wind velocity manually regulates and controls sends wind speed regulation and control instruction, described smoke exhaust ventilator is according to wind speed regulation and control instruction adjustment wind speed; After the button of described threshold wind velocity auto-control sends the instruction of wind speed auto-control, described smoke exhaust ventilator received according to described light receiver, is sent and the light information reflected by oil smoke by described light emitters, the wind speed of adjustment smoke exhaust ventilator.

The present embodiment provide and automatically regulate the smoke exhaust ventilator of wind speed to be respectively arranged with accommodation hole 3 at smoke collecting chamber two adjacent wall, 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.

The fume exhauster velocity modulation Ore-controlling Role that the present embodiment provides, comprises the manual regulator control system of wind speed and wind speed automatic regulating system, and in the manual regulator control system of described wind speed, smoke exhaust ventilator is according to the wind speed regulation and control instruction adjustment wind speed of manually input; Described wind speed automatic regulating system comprises light emitters and light receiver, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light reflected by oil smoke, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information reflected by oil smoke, the wind speed of adjustment smoke exhaust ventilator.

Described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information reflected by oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light intensity reflected by oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

Described wind speed auto-control mode refers to, the light receiver of smoke exhaust ventilator receives light emitters and sends and the light information reflected by oil smoke, the wind speed of adjustment smoke exhaust ventilator.The light receiver of described smoke exhaust ventilator receives light emitters and sends and the light information reflected by oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light intensity reflected by oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

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;

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.

Embodiment 3

As shown in Figure 3, the smoke exhaust ventilator that the present embodiment provides, comprise the button (power key 4) of button 5 and 6 that threshold wind velocity manually regulates and controls, threshold wind velocity auto-control, light emitters 1 and light receiver 2, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light reflected by smoke collecting chamber oil smoke, after the button that described threshold wind velocity manually regulates and controls sends wind speed regulation and control instruction, described smoke exhaust ventilator is according to wind speed regulation and control instruction adjustment wind speed; After the button of described threshold wind velocity auto-control sends the instruction of wind speed auto-control, described smoke exhaust ventilator received according to described light receiver, is sent and the light information reflected by smoke collecting chamber oil smoke by described light emitters, the wind speed of adjustment smoke exhaust ventilator.

The smoke exhaust ventilator of automatic adjustment wind speed is 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.

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.

Under manual regulation and control model, the long power key pressing smoke exhaust ventilator, smoke exhaust ventilator enters wind speed auto-control pattern, according to light receiver received light line information, adjustment blower fan wind speed automatically.

Smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light intensity reflected by smoke collecting chamber oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

The present embodiment provides fume exhauster velocity modulation Ore-controlling Role, comprises the manual regulator control system of wind speed and wind speed automatic regulating system, and in the manual regulator control system of described wind speed, smoke exhaust ventilator is according to the wind speed regulation and control instruction adjustment wind speed of manually input; Described wind speed automatic regulating system comprises light emitters and light receiver, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light reflected by smoke collecting chamber oil smoke, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.

Described light emitters is IR transmitter or generating laser.

Described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light intensity reflected by smoke collecting chamber oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

The present embodiment provides fume exhauster velocity modulation control method, comprise the manual control methods of wind speed and wind speed auto-control mode, the manual control methods of described wind speed and wind speed auto-control mode switch in the following way: smoke exhaust ventilator in the energized state, wind speed manually regulates and controls button and is pressed, then the manual control methods of threshold wind velocity; Power knob is long pressed or manual/auto switching push button is pressed, then threshold wind velocity auto-control mode.

Described wind speed auto-control mode refers to, the light receiver of smoke exhaust ventilator receives light emitters and sends and the light information reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.The light receiver of described smoke exhaust ventilator receives light emitters and sends and the light information reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light intensity reflected by smoke collecting chamber oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

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 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.

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.

Embodiment 4

As shown in Figure 4, the present embodiment provides a kind of smoke exhaust ventilator, comprise the button (power key 4) of button 5 and 6 that threshold wind velocity manually regulates and controls, threshold wind velocity auto-control, light emitters 1 and light receiver 2, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light passing smoke collecting chamber oil smoke or reflected by smoke collecting chamber oil smoke, after the button that described threshold wind velocity manually regulates and controls sends wind speed regulation and control instruction, described smoke exhaust ventilator is according to wind speed regulation and control instruction adjustment wind speed; After the button of described threshold wind velocity auto-control sends the instruction of wind speed auto-control, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.

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.

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.

Smoke exhaust ventilator power key is long pressed, and smoke exhaust ventilator enters wind speed auto-control pattern, according to light receiver received light line information, and adjustment blower fan wind speed automatically.

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.

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.

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

1. a smoke exhaust ventilator, comprise button that threshold wind velocity manually regulates and controls, the button of threshold wind velocity auto-control, light emitters and light receiver, it is characterized in that, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light passing smoke collecting chamber oil smoke or reflected by smoke collecting chamber oil smoke

After the button that described threshold wind velocity manually regulates and controls sends wind speed regulation and control instruction, described smoke exhaust ventilator is according to wind speed regulation and control instruction adjustment wind speed;

After the button of described threshold wind velocity auto-control sends the instruction of wind speed auto-control, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.

2. smoke exhaust ventilator described in claim 1, is characterized in that, described light emitters is IR transmitter or generating laser.

3. smoke exhaust ventilator described in claim 1, is characterized in that, the button that described threshold wind velocity manually regulates and controls refers to that wind speed manually regulates and controls button.

4. smoke exhaust ventilator described in claim 1, is characterized in that, the button of described threshold wind velocity auto-control refers to smoke exhaust ventilator manual/auto wind speed regulation and control switch key.

5. smoke exhaust ventilator described in claim 4, is characterized in that, described smoke exhaust ventilator manual/auto wind speed regulation and control switch key refers to power key.

6. smoke exhaust ventilator described in claim 1, it is characterized in that, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass smoke collecting chamber oil smoke or the light intensity that reflected by smoke collecting chamber oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

7. fume exhauster velocity modulation Ore-controlling Role, is characterized in that, comprises the manual regulator control system of wind speed and wind speed automatic regulating system,

In the manual regulator control system of described wind speed, smoke exhaust ventilator is according to the wind speed regulation and control instruction adjustment wind speed of manually input;

Described wind speed automatic regulating system comprises light emitters and light receiver, described light emitters can towards the smoke collecting chamber emission of light of smoke exhaust ventilator, described light receiver can receive described light emitters and send and the light passing smoke collecting chamber oil smoke or reflected by smoke collecting chamber oil smoke, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.

8. fume exhauster velocity modulation Ore-controlling Role described in claim 7, is characterized in that, described light emitters is IR transmitter or generating laser.

9. fume exhauster velocity modulation Ore-controlling Role described in claim 7, it is characterized in that, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, described smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass smoke collecting chamber oil smoke or the light intensity that reflected by smoke collecting chamber oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.

10. fume exhauster velocity modulation control method, comprises the manual control methods of wind speed and wind speed auto-control mode, it is characterized in that, the manual control methods of described wind speed and wind speed auto-control mode switch in the following way: smoke exhaust ventilator in the energized state,

Wind speed manually regulates and controls button and is pressed, then the manual control methods of threshold wind velocity;

Power knob is long pressed or manual/auto switching push button is pressed, then threshold wind velocity auto-control mode.

Fume exhauster velocity modulation control method described in 11. claims 10, it is characterized in that, described wind speed auto-control mode refers to, the light receiver of smoke exhaust ventilator receives light emitters and sends and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator.

Fume exhauster velocity modulation control method described in 12. claims 11, it is characterized in that, the light receiver of described smoke exhaust ventilator receives light emitters and sends and the light information of passing smoke collecting chamber oil smoke or being reflected by smoke collecting chamber oil smoke, the wind speed of adjustment smoke exhaust ventilator refers to, smoke exhaust ventilator received according to described light receiver, sent by described light emitters and pass smoke collecting chamber oil smoke or the light intensity that reflected by smoke collecting chamber oil smoke or its variation tendency, or the smoke collecting chamber oil smoke concentration to determine according to described light intensity or its variation tendency, the wind speed of adjustment smoke exhaust ventilator.