CN102374562B - There is the range hood of automatic flue gas detection device - Google Patents
There is the range hood of automatic flue gas detection device Download PDFInfo
- Publication number
- CN102374562B CN102374562B CN201010258979.4A CN201010258979A CN102374562B CN 102374562 B CN102374562 B CN 102374562B CN 201010258979 A CN201010258979 A CN 201010258979A CN 102374562 B CN102374562 B CN 102374562B
- Authority
- CN
- China
- Prior art keywords
- flue gas
- filter
- sensing device
- range hood
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
Have a range hood for automatic flue gas detection device, it comprises fuselage main body and is arranged on the spiral case in this fuselage main body, installs by the fan of electrical motor driven in spiral case; Also comprise the first filter being arranged on the opening part that fuselage main body is originated towards flue gas and the supersonic sensing device be arranged in fuselage main body, this supersonic sensing device is positioned at after the first filter, outside flue gas, first by after the first filter, arrives this supersonic sensing device.
Description
[technical field]
The present invention relates to a kind of range hood, refer in particular to a kind of range hood utilizing ultrasonic technology to realize flue gas automatically to detect, and the control method of this lampblack absorber.
[background technology]
Smoke exhaust ventilator is the kitchen household electrical appliance generally used during people live.Along with the development of science and technology, the intelligent inexorable trend having become household electrical appliances development.Usually, be all select corresponding duty by user according to use habit during smoke exhaust ventilator work, such as select certain fan speed gear: 1,2,3 ....For such range hood, user needs the state manual operation smoke exhaust ventilator according to flue gas, and another shortcoming of this range hood is: fan is often in fixing range state, gear is too low, can not reach lampblack-pumped effect very well, or gear is too high, wastes energy.Therefore, designing a kind of range hood according to smoke condition intelligence change smoke exhaust ventilator gear is a significantly thing.
Chinese utility model patent 200920000606.X discloses a kind of smoke exhaust ventilator automatically regulating air draft speed according to oil smoke concentration, device wherein for detecting oil smoke concentration is mounted in the photodetector unit on lampblack absorber, this photodetector unit comprises optical transmitting set and photodetector, therebetween have a space, the oil smoke from surrounding environment can enter this space and be detected by this photodetector unit.The shortcoming of this design is: the comparatively high cleanliness that must keep the source that accepts of the emission source of optical transmitting set and photo-detector, otherwise the sensitivity of detection and the degree of accuracy of feedback may be had a strong impact on, then, the environment for use of range hood inevitably produces a large amount of oil smoke, is difficult to ensure enough cleannes after Long-Time Service.
Another kind of is ultrasonic wave for detecting the technology of flue gas concentration, ultrasonic technology is technology fast-developing in recent years, hyperacoustic acoustical signal has good induction to flue gas, therefore, ultrasonic technology is applied to flue gas inspection and greatly can improves the operating efficiency of smoke exhaust ventilator and the use comfort of user undoubtedly.US Patent No., 5074,281 and US6,324,889B1 all disclose use ultrasonic wave to detect the technical scheme of flue gas concentration.But, in smoke exhaust ventilator running, due to environment temperature, the changing factors such as ambient humidity are to circuit board, the impact of supersonic sensing device and ultrasonic signal, the Received signal strength of supersonic sensing device likely becomes too large or too little, and be at this moment just difficult to judge the impact of flue gas for ultrasonic signal, this will certainly affect the accuracy of ultrasonic wave flue gas inspection effect.
[summary of the invention]
The object of the present invention is to provide a kind of automatic flue gas detection device of improved use ultrasonic technology, improve the accuracy of ultrasonic wave flue gas inspection.
Correspondingly, the range hood with automatic flue gas detection device of one embodiment of the present invention, it comprises fuselage main body and is arranged on the spiral case in this fuselage main body, installs by the fan of electrical motor driven in spiral case; Also comprise the first filter being arranged on the opening part that fuselage main body is originated towards flue gas and the supersonic sensing device be arranged in fuselage main body, this supersonic sensing device is positioned at after the first filter, outside flue gas, first by after the first filter, arrives this supersonic sensing device.
As a further improvement on the present invention, this supersonic sensing device is arranged in the space between the first filter and spiral case.
As a further improvement on the present invention, supersonic sensing device comprises signal generator in two opposing sidewalls of the inner space being arranged on fuselage main body respectively and signal feedback device, between signal generator and signal feedback device, form spatial channel that can be used for flue gas to pass through, the ultrasonic signal that signal generator is launched is fed back by signal feedback device by this spatial channel.
As a further improvement on the present invention, range hood also comprises the second filter be arranged in fuselage main body, this second filter is positioned at after supersonic sensing device, and outside flue gas, first by after supersonic sensing device, arrives the second filter.
As a further improvement on the present invention, the first described filter is the metal filter screen of lattice-shaped, and the second described filter is the intensive screen pack be made up of material with carbon element.
The invention has the beneficial effects as follows: supersonic sensing device is arranged in the fuselage body interior space after the first filter, supersonic sensing device is made to be in a metastable environment temperature, ambient humidity, be conducive to the interference avoiding the acute variation of external environment condition to ultrasonic signal detection flue gas concentration, thus obtain result of detection more accurately.
[Brief Description Of Drawings]
Fig. 1 is the structural representation of the range hood of one embodiment of the present invention;
Fig. 2 is the schematic diagram of the control system of range hood of the present invention;
Fig. 3 is the detailed construction schematic diagram of the ultrasonic wave module in Fig. 2;
Fig. 4 is the process of self-test schematic diagram of the control system of range hood;
Fig. 5 is the control procedure schematic diagram of the ultrasonic wave module in Fig. 5;
Fig. 6 a is that range hood starts distribution schematic diagram that is rear and ultrasonic signal sampled value under not having the situation of flue gas;
Fig. 6 b is that range hood starts distribution schematic diagram that is rear and ultrasonic signal sampled value under having the situation of flue gas;
Fig. 7 a is the mean value distribution situation schematic diagram of the sampled signal corresponding to Fig. 6 a;
Fig. 7 b is the mean value distribution situation schematic diagram of the sampled signal corresponding to Fig. 6 b.
[detailed description of the invention]
With reference to figure 1, the range hood 1 of one embodiment of the present invention comprises fuselage main body 10 and the spiral case 11 be arranged in fuselage main body 10, install in spiral case 11 by the fan of electrical motor driven, oil smoke is taken away during fan turns, the structure & working mechanism of this range hood 1 is identical with range hood common on market, is not described in detail at this.Fuselage main body 10 is provided with the first filter 12 towards the opening part that flue gas is originated, in the present embodiment, first filter 12 is metal filter screens of lattice-shaped, the gap of this metal filter screen is arranged so that outside flue gas is by being filtered the grease be partly included in flue gas time therebetween, but this metal filter screen fully can not filter out whole grease in flue gas and other impurity odorous.Supersonic sensing device is arranged in the inner space of fuselage main body 10, and be positioned at after the first filter 12, said " below " represents the spatial relation of the first filter and ultrasonic sensor herein, refer to outside flue gas and after first by the first filter 12, must can arrive supersonic sensing device.Supersonic sensing device comprises signal generator 14 and signal feedback device 15.In the present embodiment, signal generator 14 and signal feedback device 15 are arranged in two opposing sidewalls of the inner space of fuselage main body 10 respectively, like this between signal generator 14 and signal feedback device 15, form a spatial channel that can be used for flue gas to pass through, the ultrasonic signal that signal generator 14 is launched to be fed back by signal feedback device 15 by this spatial channel, thus draw the disturbance regime received by the ultrasonic signal of this spatial channel, and judge the concentration of the flue gas by this spatial channel further thus, concrete determination methods can be described in detail in the following paragraphs.Second filter 13 is set between spiral case 11 and supersonic sensing device; in the present embodiment; second filter 13 is the intensive screen packs be made by material with carbon element (such as activated carbon); grid gap due to the first filter 12 is comparatively large and be difficult to the impurity that filters completely in flue gas; arrange the second filter 13 can filter flue gas further; thus make the flue gas clean enough that is discharged in outdoor air, be conducive to environmental protection.It is to be noted, second filter 13 might not be necessary in other embodiments of the present invention, but supersonic sensing device of the present invention can not be arranged on after the second induction installation 13, so as not to by the flue gas concentration of supersonic sensing device too low and be difficult to detection.
With reference to figure 2, the control system of the range hood of one embodiment of the present invention comprises main control module 2, ultrasonic wave module 3, display button module 4, fan motor 5, lamp 6, and external power supply 7.Wherein main control module 2 is control axis of range hood, and it comprises the circuit board that a piece has control chip, and its installation site can be arranged on the correct position of fuselage main body 10 of range hood, such as, be arranged on the rear of display control module 4.Main control module 2, under the driving of external power supply 7, receives from ultrasonic wave module 3 and display button module 4, and sends command signal to correspondingly ultrasonic wave module 3, display button module 4, motor fan 5, lamp 6.Ultrasonic wave module 3 is independently modules, and its concrete framework as shown in Figure 3, below can be described in detail.Can be interconnected by power line and data wire between ultrasonic wave module 3 and main control module 2, and exchange information by D-BUS II communication protocol, such design can allow ultrasonic wave module 3 independent of main control module 2, thus can be mounted freely on range hood on any suitable position, such as ultrasonic wave module 3 can be arranged on the position near supersonic sensing device, so namely, space can be made full use of, also the design of whole system is convenient to (if be integrated on main control module 2 by ultrasonic wave module 3, the volume of whole control unit can be made too huge, and inconvenience finds suitable position to install).Can be interconnected by power line and data wire between display button module 4 and main control module 2, be connected by data wire with between ultrasonic wave module 3, and exchange information by D-BUS II communication protocol, display button module 4 receives the key command according to operator's input, to main control module 2 transmission of information, be used for controlling the running of range hood, also can to ultrasonic wave module 3 transmission of information, be used for controlling the work of ultrasonic wave module; Similarly, the control instruction that main control module 2 and ultrasonic wave module 3 also can send by display button module 4 or range hood work state information show, and allow operator understand the duty of range hood.Fan motor 5 and lamp 6 unidirectional receptions of difference, from the instruction of main control module 2, realize the start/stop/speed change of motor 5, or lamp 6 is bright/go out.
With reference to figure 2, the control system of range hood of the present invention comprises S1 to S7 and amounts to seven steps, and after seven steps, then the ultrasonic wave module of range hood is in normal duty.
With reference to figure 3, ultrasonic wave module 3 comprises MCU30 (MicroControlUnit, micro-control unit), oscillator 31, amplifier 1, shaping circuit 33, supersonic sensing device 34, switch 1, amplifier 2 36, bandpass filter 37, peak detection circuit 38, and switch 2 39.The operation principle of ultrasonic wave module 3 is: MCU30 controls enable, the frequency of oscillation of oscillator 31, the state of switch 1, switch 2 39, and the multiplication factor of amplifier 2 36.Oscillator 31 can produce the signal of certain frequency.The output signal of oscillator 31 is amplified to certain amplitude by amplifier one.Amplifier 1 is outputed signal shaping and exports to supersonic sensing device 34 by shaping circuit 33.Supersonic sensing device 34 receives the pumping signal that shaping circuit 33 exports, and sends acoustical signal, and receiving feedback signals.Feedback signal is amplified by amplifier 2 39.Bandpass filter 37 is to the feedback signal filtering after amplification.Peak detection circuit 38 outputs to MCU30 for AD sampling from AC regeneration signal extraction crest voltage.
Structure and the course of work of ultrasonic wave module 3 of the present invention have following feature: structurally, arrange two switches: i.e. switch 1 and switch 2 39.In the course of the work, coordinate with reference to figure 5, these two switches ON/OFF successively, thus effectively prevent small-signal to input at the turn-off noise of amplification process breaker in middle.Specific works process is as follows:
Step S30: oscillator 31 is enable, now switch 1 and switch 2 39 are all in off state;
Step S31: oscillator 31 sends pumping signal, and send after amplifier 1 amplifies, now switch 1 and switch 2 39 are all in off state;
Step S32: wait for ultrasound feedback signal, now switch 1 and switch 2 39 are all in off state;
Step S33: actuating switch 1, receiving feedback signals, and amplify through amplifier 2 36, now switch 2 39 is in off state;
Step S34: actuating switch 2 39 starts AS sampling, and now switch 1 and switch 2 39 are all in conducting state;
Step S35: free time, calculate fan speed according to sampled data, now switch 1 and switch 2 39 are all in off state.
Ultrasonic system can be subject to the impact of a variety of factor, such as environment temperature, ambient humidity, flue gas etc.These influence are in circuit board, and supersonic sensing device and ultrasonic signal, make the ultrasound feedback signal intensity received.If environment temperature, when ambient humidity change is violent, ultrasonic signal can be caused too large or too little.Such as: if environment temperature, ambient humidity change acutely causes ultrasonic signal when smokeless just very greatly, a problem can be brought like this, ultrasonic signal amplitude is excessive, when there being flue gas, the ultrasonic signal much collected is all saturation value, and hyperacoustic mean value is very large and the waving interval of mean value is very little, thus causes system to be difficult to judge whether flue gas.Again such as: if environment temperature, ambient humidity change acutely causes ultrasonic signal just very little when smokeless, another one problem can be brought like this, ultrasonic signal amplitude is too small, no matter whether there is flue gas, ultrasonic signal is all fluctuate in a very little scope, causes system to be difficult to judge whether flue gas equally.
Corresponding to above problem, another feature of ultrasonic wave module 3 of the present invention is: amplifier 2 36 is the adjustable amplifiers of a multiplication factor, can control its multiplication factor by MCU30, the design of such respective outer side edges systems soft ware can solve environment temperature, ambient humidity acute variation to the impact of ultrasonic signal.Ultrasonic signal threshold values V is pre-set in MCU
mAXand V
mIN, according to the actual ultrasonic signal sampled, carry out following multiplication factor adjustment:
As sample mean V
meanValueduring > VMAX, reduce the multiplication factor of amplifier 2 36, until V
meanValue< V
mAX.
As sample mean V
meanValue< V
mINtime, increase the multiplication factor of amplifier 2 36, until V
meanValue> V
mIN.
Like this, the sample mean V of ultrasonic signal
meanValuejust drop on a reasonably interval, thus ensure that ultrasonic signal well can reflect the impact of flue gas.
With reference to figure 6a to Fig. 7 b, operation principle and the control method thereof of the range hood of automatic flue gas detection device of the present invention is below described.
Ultrasonic signal can be subject to the impact of a variety of factor, such as environment temperature, ambient humidity, flue gas etc.But if supersonic sensing device to be arranged on the fuselage interior of the range hood as shown in Fig. 1 of the present invention, then environment temperature, the impact of the factors such as ambient humidity on ultrasonic signal is relatively uniform.Fig. 6 a shows the distribution of ultrasonic signal sampled value under certain fan operating speeds.As can be seen from Fig. 6 a, the distribution of ultrasonic signal sampled value is more even.Certainly, the size of fan speed also has a certain impact to sampled value, and on the whole, fan speed is larger, and the discreteness of sampled value is larger.
Under same wind speed, Fig. 6 b shows the impact of flue gas for sampled signal.Before occurring from flue gas, ultrasonic signal sampled value is more concentrated, and value is also larger; When flue gas occur after, ultrasonic signal sampled value one in a big way in fluctuation, while sampled value be more partial to low value; When flue gas disappear after, ultrasonic wave sampled value returns to higher value again, and one among a small circle in fluctuate.
Within a certain period of time mean value calculation is done to sampled signal, the mean value figure of Fig. 7 a and Fig. 7 b can be obtained according to the signal of Fig. 6 a and Fig. 6 b respectively.Comparison diagram 7a and Fig. 7 b can find out, flue gas has obvious Changing Pattern for the impact of the mean value of ultrasonic wave sampled signal, and that is exactly when smokeless, signal curve is smooth steady relatively, after flue gas produces, because flue gas is to the weakening of ultrasonic signal, amplitude reduces.Again due to the discontinuity of flue gas, signal is beated acutely, signal curve shows as amplitude and shakes up and down.Therefore, the present invention judges the size of flue gas according to the change of mean value amplitude, mainly comprises following two schemes:
Scheme one: be the mean value threshold values that different fan-speed settings is different, when the mean value of ultrasonic wave sampled signal is lower than a setting threshold values, judge that it should improve fan speed, when the mean value of ultrasonic wave sampled signal is higher than a setting threshold values, judge that it should reduce fan speed.Such as, for fan speed Speed1, Speed2 set threshold values V respectively
speed1and V
speed2.V
meanValuefor the mean value of sampled signal in T1 to the T2 time period.As sampled value V
meanValue< V
speed1time, fan speed rises to 2 grades, as sampled value V by 1 grade
meanValue> V
speed2time, fan speed is reduced to 1 grade by 2 grades.
Scheme two: be the mean value fluctuation range that different fan-speed settings is different, and setting range is exceeded to mean value in certain hour count, and be the threshold values that different fan speeds changes setting counting, in order to judge the change of a fan speed.Such as, different fluctuation range standards is set under different fan speed states: the corresponding interval (V of Speed1
speed1min, V
speed1max), the corresponding interval (V of Speed2
speed2min, V
speed2max), V
meanValuefor the mean value of sampled signal in T1 to the T2 time period.Under Speed1 state, if ultrasonic signal each V in T1 to T2 time range of sampling
meanValueexceed (V
speed1min, V
speed1max) count value be greater than established standards C
maxtime, then think there is larger flue gas, fan speed rises to 2 grades by 1 grade.Under Speed2 state, if ultrasonic signal each V in T1 to T2 time range of sampling
meanValueexceed (V
speed2min, V
speed2max) count value be less than established standards C
mintime, think there is less flue gas, fan speed changes to 1 grade by 2 grades.
The advantage of scheme one and scheme two: the effective information using algorithm cleverly fully to extract flue gas ultrasonic signal is affected, two methods can adopt 2 kinds of methods respectively according to the specific design of smoke exhaust ventilator or by 2 kinds of methods combining to together, thus reach the effect automatically changing range hood fan speed according to smoke behavior.
It is more than better embodiment of the present invention; it is to be noted; those of ordinary skill in the art can based on the announcement of present embodiment; adaptive change is made on the basis of not paying creative work, and these reasonably change should within the protection domain of claim of the present invention.
Claims (5)
1. have a range hood for automatic flue gas detection device, it comprises fuselage main body and is arranged on the spiral case in this fuselage main body, installs by the fan of electrical motor driven in spiral case; Also comprise the first filter being arranged on the opening part that fuselage main body is originated towards flue gas and the supersonic sensing device be arranged in fuselage main body, it is characterized in that, this supersonic sensing device is positioned at after the first filter, outside flue gas, first by after the first filter, arrives this supersonic sensing device; Be provided with ultrasonic wave module in the position near described supersonic sensing device, described ultrasonic wave module comprises the adjustable amplifier of a multiplication factor.
2. have the range hood of automatic flue gas detection device as claimed in claim 1, it is characterized in that, this supersonic sensing device is arranged in the space between the first filter in fuselage main body and spiral case.
3. there is the range hood of automatic flue gas detection device as claimed in claim 1, it is characterized in that, this supersonic sensing device comprises signal generator in two opposing sidewalls of the inner space being arranged on fuselage main body respectively and signal feedback device, between signal generator and signal feedback device, form spatial channel that can be used for flue gas to pass through, the ultrasonic signal that signal generator is launched is fed back by signal feedback device by this spatial channel.
4. there is the range hood of automatic flue gas detection device as claimed in claim 1, it is characterized in that, also comprise the second filter be arranged in fuselage main body, this second filter is positioned at after supersonic sensing device, outside flue gas, first by after supersonic sensing device, arrives the second filter.
5. have the range hood of automatic flue gas detection device as claimed in claim 4, it is characterized in that, the first described filter is the metal filter screen of lattice-shaped, and the second described filter is the intensive screen pack be made up of material with carbon element.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010258979.4A CN102374562B (en) | 2010-08-17 | 2010-08-17 | There is the range hood of automatic flue gas detection device |
| EP11177262.0A EP2420742B1 (en) | 2010-08-17 | 2011-08-11 | Range hood having an automatic fume detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010258979.4A CN102374562B (en) | 2010-08-17 | 2010-08-17 | There is the range hood of automatic flue gas detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102374562A CN102374562A (en) | 2012-03-14 |
| CN102374562B true CN102374562B (en) | 2015-11-25 |
Family
ID=44677477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010258979.4A Expired - Fee Related CN102374562B (en) | 2010-08-17 | 2010-08-17 | There is the range hood of automatic flue gas detection device |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2420742B1 (en) |
| CN (1) | CN102374562B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106996586B (en) * | 2017-05-18 | 2023-07-28 | 浙江帅康电气股份有限公司 | Fresh air linkage controller and range hood using same |
| CN108167908B (en) * | 2018-03-07 | 2023-01-03 | 佛山市云米电器科技有限公司 | Range hood with induction type speed regulation function |
| CN110594455B (en) * | 2019-09-25 | 2021-10-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Check valve component and kitchen appliance |
| CN111174256A (en) * | 2020-01-20 | 2020-05-19 | 宁波舜韵电子有限公司 | Intelligent range hood |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5074281A (en) * | 1990-02-21 | 1991-12-24 | Diehl Gmbh & Co. | Circuit arrangement for the control of a ventilator |
| DE19510731C2 (en) * | 1994-08-22 | 1999-09-16 | Diehl Stiftung & Co | Ultrasonic path in narrow channels of housings |
| EP1001226A2 (en) * | 1998-11-11 | 2000-05-17 | Diehl Controls Nürnberg GmbH & Co. KG | Ultrasonic sensor for smoke extracting hoods |
| US6142142A (en) * | 1999-04-15 | 2000-11-07 | Vent-A-Hood | Method, apparatus and system for safely and efficiently controlling a ventilation hood |
| CN2416403Y (en) * | 1999-12-29 | 2001-01-24 | 台湾樱花股份有限公司 | Electric circuit apparatus for intelligent exhauster |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690245A (en) * | 1970-09-17 | 1972-09-12 | Panacon Corp | Range hood unit with fire safeguard fan control system |
| DE4243938A1 (en) * | 1992-12-23 | 1994-06-30 | Bosch Siemens Hausgeraete | Extractor hood |
| JPH0876772A (en) * | 1994-09-08 | 1996-03-22 | Yanmar Diesel Engine Co Ltd | Active muffler |
| DE19940123A1 (en) * | 1999-08-24 | 2001-03-01 | Bsh Bosch Siemens Hausgeraete | Control or regulating device of a cooker |
| US6415742B1 (en) * | 2000-07-03 | 2002-07-09 | Radio Systems Corporation | Dual transmitter pet confinement and training system |
| US6446624B1 (en) * | 2000-10-12 | 2002-09-10 | Taiwan Sakura Corporation | Smart circuit device of smoke exhauster for cooking |
| DE102005015754A1 (en) * | 2004-10-20 | 2006-04-27 | E.G.O. Elektro-Gerätebau GmbH | Ventilation unit |
| WO2007013187A1 (en) * | 2005-07-26 | 2007-02-01 | Watanabe Manufactory Company Limited | Range hood fan, and cooking gas collection and discharge method |
-
2010
- 2010-08-17 CN CN201010258979.4A patent/CN102374562B/en not_active Expired - Fee Related
-
2011
- 2011-08-11 EP EP11177262.0A patent/EP2420742B1/en not_active Not-in-force
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5074281A (en) * | 1990-02-21 | 1991-12-24 | Diehl Gmbh & Co. | Circuit arrangement for the control of a ventilator |
| DE19510731C2 (en) * | 1994-08-22 | 1999-09-16 | Diehl Stiftung & Co | Ultrasonic path in narrow channels of housings |
| EP1001226A2 (en) * | 1998-11-11 | 2000-05-17 | Diehl Controls Nürnberg GmbH & Co. KG | Ultrasonic sensor for smoke extracting hoods |
| US6142142A (en) * | 1999-04-15 | 2000-11-07 | Vent-A-Hood | Method, apparatus and system for safely and efficiently controlling a ventilation hood |
| CN2416403Y (en) * | 1999-12-29 | 2001-01-24 | 台湾樱花股份有限公司 | Electric circuit apparatus for intelligent exhauster |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2420742B1 (en) | 2017-05-10 |
| CN102374562A (en) | 2012-03-14 |
| EP2420742A1 (en) | 2012-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102374561B (en) | There is range hood and the control method thereof of automatic flue gas detection device | |
| CN102374563B (en) | There is range hood and the control method thereof of automatic flue gas detection device | |
| CN201438011U (en) | Air conditioner controlled through human induction | |
| CN102374562B (en) | There is the range hood of automatic flue gas detection device | |
| CN201340001Y (en) | Smoke exhaust ventilator capable of automatically adjusting air exhaust speed according to oil smoke concentration | |
| CN104142288B (en) | A kind of device and detection method of oil smoke machine testing oil smoke concentration | |
| CN101476747B (en) | Smoke discharging system with automatic air draft speed regulation function according to smog concentration | |
| CN203859335U (en) | Alternating-current power-saving switch control device | |
| CN102269440A (en) | Intelligent self-control frequency-variable kitchen ventilator | |
| CN107478616A (en) | Screen pack laying dust detection method, household electrical appliances and computer-readable recording medium | |
| CN105892766A (en) | Operating mode control method and operating mode control device of infrared touch frame | |
| CN202166108U (en) | Intelligent self-control frequency conversion smoke exhaust ventilator | |
| CN102156468B (en) | System for complementary power supply between small power station and commercial power grid | |
| CN108283460B (en) | Dust suction device | |
| CN203506597U (en) | Intelligent air quality testing dust collector with Bluetooth function | |
| CN113616108A (en) | Method for intelligently adjusting rotating speed of motor of dust collector | |
| CN106527636A (en) | People recognition technology-based server intelligent monitoring device | |
| CN203981191U (en) | A kind of photoelectric sensor of deviation-rectifying system | |
| CN202040877U (en) | Integrated oven with an automatic fan control device | |
| CN105160847A (en) | Touch filtering type power-saving remote controller | |
| CN211260932U (en) | Smoke stove linkage system | |
| CN203072060U (en) | Television set capable of detecting humidity automatically and dehumidifying intelligently | |
| CN210721847U (en) | Vehicle detector with high detection precision | |
| CN203366148U (en) | Humidity automatic control system | |
| CN2338729Y (en) | Strip edge position detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20180817 |