CN110030595B - Oil smoke detection device, range hood and control method of range hood - Google Patents
Oil smoke detection device, range hood and control method of range hood Download PDFInfo
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- CN110030595B CN110030595B CN201910278952.2A CN201910278952A CN110030595B CN 110030595 B CN110030595 B CN 110030595B CN 201910278952 A CN201910278952 A CN 201910278952A CN 110030595 B CN110030595 B CN 110030595B
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- 239000000779 smoke Substances 0.000 title claims abstract description 136
- 238000001514 detection method Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000035945 sensitivity Effects 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims description 66
- 239000007788 liquid Substances 0.000 claims description 41
- 239000007921 spray Substances 0.000 claims description 37
- 239000010865 sewage Substances 0.000 claims description 30
- 238000005286 illumination Methods 0.000 claims description 19
- 238000005406 washing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000001502 supplementing effect Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 4
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 241000208125 Nicotiana Species 0.000 abstract description 5
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000006233 lamp black Substances 0.000 description 5
- 239000004071 soot Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002637 fluid replacement therapy Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- 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
- F24C15/2057—Removing cooking fumes using a cleaning liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Dispersion Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses an oil smoke detection device, an oil smoke exhauster and a control method thereof, wherein the oil smoke detection device comprises a light emitter and a light receiver, the light emitter emits detection light, the light receiver collects the detection light reflected and/or refracted by oil smoke, and the control device is electrically connected with the light emitter and the light receiver; smoke ventilator includes the body, and body inside is provided with fan, controlling means and oil smoke detection device, and the body top surface sets up and leads the tobacco pipe, and oil smoke detection device sets up between fan and leading the tobacco pipe, and controlling means and fan electricity are connected, and controlling means turns into the signal of telecommunication of oil smoke concentration value with the light signal that detects, according to oil smoke concentration value control fan rotational speed. The oil smoke detection device is arranged in the range hood body and between the fan and the smoke guide pipe, so that the influence of ambient light and barrier blocking on the oil smoke detection is effectively avoided, the sensitivity of an oil smoke detection result is improved, the air speed of the range hood can be automatically adjusted, and the energy consumption is reduced.
Description
Technical Field
The invention relates to an oil smoke detection device and an oil smoke detection method, in particular to an oil smoke detection device and an oil smoke detection method of a range hood.
Background
When controlling traditional lampblack absorber, the gear of smoke ventilator is adjusted according to the oil smoke size manual work usually, need constantly adjust when leading to the fried dish, some do not need the artificial stewing of guard even and boil and also need the user at the gear of adjustment smoke ventilator on one side, it is frequent to adjust the operation, not only troublesome, the effect is not good again, waste the electric energy even, chinese patent CN204830100U discloses a smoke ventilator and control panel, set up a plurality of gear buttons on the control panel body, every gear button corresponds different gears respectively, when needing to adjust wind-force intensity, directly press corresponding gear button can.
In the patent with publication number CN107477632A, an oil smoke detection device is disposed at an air inlet of the range hood, and a control device acquires oil smoke concentration by collecting signals of the oil smoke detection device, so as to control the rotation speed of the fan. The detection device has the following defects: on one hand, because the oil smoke detection device is arranged outside the oil smoke exhaust ventilator, the influence of the ambient light intensity and the obstacles on the accuracy of the detection result is large; on the other hand, the oil smoke detection device is exposed in an environment with high oil smoke concentration for a long time, so that oil smoke is attached to the oil smoke detection device, and the sensitivity of a detection result is seriously influenced.
Disclosure of Invention
The invention aims to provide an oil smoke detection device, a range hood and a control method of the oil smoke detection device, mainly solves the technical problems that the energy consumption of the range hood is large due to the fact that the rotating speed of a fan is adjusted manually by the existing range hood, secondly solves the technical problem that the accuracy of a detection result is influenced by an oil stain pollution detection device of the existing range hood with the fan wind speed adjusted intelligently, and thirdly solves the technical problem that the sensitivity of the existing oil smoke detection device is low.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides an oil smoke detection device, sets up in smoke ventilator's air outlet department, and oil smoke detection device includes light emitter and optical receiver, and the light emitter sends detection light, and optical receiver collects the detection light after oil smoke reflection and/or refraction, and controlling means is connected with light emitter and optical receiver electricity, turns into the signal of telecommunication of oil smoke concentration value with the light signal that detects, controls the fan rotational speed according to the oil smoke concentration value.
The utility model provides a smoke ventilator, includes smoke ventilator's body, and the body is inside to be provided with fan, controlling means and oil smoke detection device, and the body top surface sets up leads the tobacco pipe with the body intercommunication, and oil smoke detection device sets up at the fan and lead between the tobacco pipe, and oil smoke detection device's light emitter and light receiver set up in the both sides of leading tobacco pipe axial lead relatively, and controlling means and fan electricity are connected, according to the oil smoke concentration value regulation fan rotational speed.
Furthermore, the front side of the range hood body is provided with a control panel, a user operation interface is arranged on the control panel, the control device is electrically connected with the control panel, and parameters for controlling the rotating speed of the fan are set through the control panel.
Further, this smoke ventilator still includes the belt cleaning device who washs fume detection device.
Further, the cleaning device comprises a cleaning spray head which is arranged close to the light emitter and the light receiver.
Furthermore, the cleaning device comprises two cleaning spray heads, wherein one cleaning spray head is arranged below the transmitting end of the light emitter obliquely, the cleaning spray head sprays high-temperature steam from the lower oblique direction to remove dirt for the light emitter, the other cleaning spray head is arranged below the receiving end of the light receiver obliquely, and the cleaning spray head sprays high-temperature steam from the lower oblique direction to remove dirt for the light receiver.
Furthermore, the cleaning nozzles are respectively arranged at two ends of the liquid outlet pipeline, the other end of the liquid outlet pipeline is connected with the heater, and the heater and the cleaning nozzles are respectively connected with the control device.
Further, the heater is connected with the liquid supplementing device through a liquid inlet pipeline, a liquid injection switch is arranged on the liquid inlet pipeline, and the liquid injection switch is connected with the control device.
Furthermore, the liquid supplementing device is a water tank which is fixed on the top surface of the body.
Furthermore, the liquid supplementing device is a pipeline directly communicated with tap water.
Furthermore, a sewage discharge pipeline is arranged above the cleaning device, a sewage discharge groove for collecting sewage is respectively arranged at the end part of the sewage discharge pipeline close to the cleaning spray head, and the collected sewage is discharged to a sewer pipeline by the sewage discharge pipeline.
Furthermore, the sewage draining pipeline and the cleaning pipeline are double-layer pipelines which are mutually contacted.
Further, the light emitter and the light receiver are respectively arranged in a box body with an opening at one end, the opening of the box body is oppositely arranged, and the opening of the box body is sealed through a lens.
Further, the lens is a glass lens.
A control method of a range hood comprises the steps that a control device collects the illumination intensity of detection light rays emitted by a light emitter and the illumination intensity of detection light rays collected by a light receiver after oil smoke reflection and/or refraction, detected optical signals are converted into electric signals of oil smoke concentration values, and the rotating speed of a fan is controlled according to the change of the oil smoke concentration values.
Further, the control method of the range hood mainly comprises the following steps:
start step S0: the range hood enters a standby state after being started, and the range hood is selected to start working through a user operation interface on a control panel;
parameter setting step S11: finishing parameter setting of the rotating speed of the control fan on a user operation interface of the control panel or according to a default set value;
start operation step S12: starting the range hood to enter a working state through a user operation interface of a control panel, wherein the fan runs at a default initial speed;
determination step S13: the oil smoke detection device starts to detect the oil smoke concentration, the control device determines a real-time oil smoke concentration value through a detection signal of the collected light receiver, and compares the oil smoke concentration value with an oil smoke concentration threshold value preset by the control device;
adjustment step S14: if the oil smoke concentration value is larger than the oil smoke concentration threshold value, the control device completes the adjustment of the rotating speed of the fan according to the detected parameters, and returns to the step S13;
shutdown step S15: if the oil smoke concentration value is continuously smaller than the oil smoke concentration threshold value, the fan stops working after working for a period of time at a low rotating speed, and the range hood enters a standby state.
Further, the method for controlling the fan speed in the determination step S13 to the adjustment step S14 is: the light emitter emits detection light, the detection light is collected by the light receiver after the reduction of the reflection or refraction and other effects of the oil smoke, the control device detects signals of the light emitter and the light receiver to obtain the oil smoke concentration V, the sensitivity K preset by the control device and the maximum illumination intensity M to control the rotating speed of the fan.
Further, the control method also comprises the step of cleaning the oil smoke detection device, wherein the cleaning process comprises the following steps:
warming step S21: the control device starts the liquid injection switch to add liquid into the heater, and starts the heater to heat;
spray rinsing step S22: after reaching the specified temperature, the control device opens the cleaning spray head to spray and wash the lens;
a blowdown step S33: after the spray washing is finished, the fan is started to drive the air flow to air-dry, a part of dirty liquid is discharged through the sewage discharge pipeline, and after the washing process is finished, the range hood enters a standby state.
The beneficial effects of the invention are as follows:
the invention is provided with the oil smoke detection device, and can automatically adjust the air speed according to the oil smoke concentration, thereby effectively detecting the oil smoke concentration and reducing the energy consumption for controlling the range hood.
Secondly, the oil smoke detection device is arranged in the range hood body and between the fan and the smoke guide pipe, so that the influence of ambient light and barrier blocking on oil smoke detection can be effectively avoided, and the range of selection is wider due to more types of light emitters and light receivers.
Furthermore, the cleaning devices are respectively arranged between the light emitter and the light receiver, so that the oil smoke detection device can be automatically cleaned, manual cleaning can be omitted, the light emitter and the light receiver are respectively sealed through high-temperature resistant lenses, and the oil smoke detection device is effectively prevented from being damaged by a humid environment.
Furthermore, the invention obtains the maximum illumination intensity in the cleaning process, does not need to compare and calculate the ambient light, realizes a one-to-one sending and receiving mode and saves more materials.
In addition, sensitivity adjustment and maximum illumination intensity resetting are introduced in oil smoke concentration control, different sensitivities can be set according to different environments to complete difference control, and the method has stronger environment adaptability.
Drawings
The invention is further explained below with reference to the figures and examples.
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of the lampblack detection device provided by the invention;
FIG. 3 is a top view of the range hood of the present invention;
FIG. 4 is a cross-sectional view of a cleaning detail of the cleaning apparatus of the light receiving end of the present invention;
FIG. 5 is a cross-sectional view of the heater and the water inlet and outlet paths of the present invention;
fig. 6 is a flow chart of the control process of the kitchen ventilator created by the present invention.
The reference numbers in the figures illustrate: 1. a body; 11. a control panel; 2. a fan; 3. an oil smoke detection device; 31. a light emitter; 32. an optical receiver; 33, 33', a lens; 34, 34', a box body; 4. a smoke guide pipe; 5. a cleaning device; 51, 51', cleaning spray head; 52. a heater; 53. a liquid outlet pipeline; 54. a liquid supplementing device; 55. a blowdown line; 56, 56', a sewage draining groove; 57. a sewer pipeline; 6. a wall body.
Detailed Description
The invention provides an oil smoke detection device, which is arranged in an oil smoke exhaust ventilator with the following structure: as shown in fig. 1-2, the range hood includes a body 1 of the range hood, a fan 2, a control device and a smoke detection device 3 are arranged inside the body 1, a smoke guide tube 4 communicated with the body 1 is arranged at the center of the top surface of the body 1, the smoke detection device 3 is arranged between the fan 2 and the smoke guide tube 4, and since the smoke detection device 3 is arranged inside the body 1, the interference of external light to the smoke detection device 3 is small, the requirement on the light emitter 31 is greatly reduced, the types of the selectable light emitters 31 are wider, such as an infrared emitter, a visible light laser emitter, and the like.
The lampblack detection device 3 comprises a light emitter 31 and a light receiver 32, the light emitter 31 and the light receiver 32 are oppositely arranged on two sides of the axial lead of the smoke guide pipe 4, the area between the light emitter 31 and the light receiver 32 is a light area, the lampblack detection device 3 cannot block an air channel, the light emitter 31 emits detection light, and the detection light is reflected and/or refracted by lampblack and then is collected by the light receiver 32.
The fan 2, the light emitter 31 and the light receiver 32 are respectively connected with a control device, the control device can collect the illumination intensity of the detection signals of the light emitter 31 and the light receiver 32 and obtain the oil smoke concentration value, so that the oil smoke concentration value is compared and calculated, and the rotating speed of the fan 2 is controlled through the calculation result and the sensitivity set by a user.
The front of the range hood body 1 is provided with a control panel 11, the control panel 11 is provided with a user operation interface, the control device is electrically connected with the control panel 11, and a user can complete setting of parameters for controlling the rotating speed of the fan 2 through the user operation interface of the control panel 11.
As shown in fig. 2, the range hood further includes a cleaning device 5 capable of cleaning the oil stains from the oil smoke detection device 3, and the cleaning device 5 is preferably a high temperature steam cleaning device. The cleaning device 5 comprises a cleaning spray head which is arranged close to the light emitter 31 and the light receiver 32; as shown in the figure, it is preferable that two cleaning nozzles 51, 51 'are included, the two cleaning nozzles 51, 51' are respectively disposed adjacent to the light emitter 31 and the light receiver 32, one cleaning nozzle 51 is disposed obliquely below the emitting end of the light emitter 31, the cleaning nozzle 51 sprays high-temperature steam from the lower oblique upward to decontaminate the light emitter 31, the other cleaning nozzle 51 'is disposed obliquely below the receiving end of the light receiver 32, and the cleaning nozzle 51' sprays high-temperature steam from the lower oblique upward to decontaminate the light receiver 32.
In order to supply the washing water or the washing steam, as shown in fig. 3 to 5, a liquid outlet pipe 53 is provided in the hood body. The cleaning nozzles 51 and 51' are respectively arranged at the liquid outlet ends of the liquid outlet pipes 53, the water inlet ends of the two liquid outlet pipes 53 are connected with the water outlet of the heater 52 through a three-way pipe, and the water inlet of the heater 52 is connected with the liquid supplementing device 54 through a liquid inlet pipe. The liquid inlet pipeline is provided with a liquid injection switch which is connected with a control device, and the control device controls the liquid injection switch to add water into the heater 52. Meanwhile, the heater 52 and the cleaning nozzles 51 and 51 'are also connected with the control device, the control device starts the heater 52 to heat, water generates a high-temperature and high-pressure gas-liquid mixture after being heated in a sealed state, the control device opens the cleaning nozzles 51 and 51' to spray the oil smoke detection device 3 to remove oil stains on the surface of the oil smoke detection device 3, and after the spraying is finished, the fan 2 is started to drive the air flow to rapidly dry. The liquid supplementing device 54 can be a water tank which is fixed on the top surface of the body 1; the fluid replacement device 54 may be a pipe that is in direct communication with tap water.
Preferably, a drain pipe 55 may be further provided above the washing device 5, and drain grooves 56, 56 'for collecting the sewage are provided at ends of the drain pipe 55 adjacent to the washing nozzles 51, 51', respectively, and the drain pipe 55 discharges the collected sewage to a drain pipe 57. Preferably, sewage pipes 55 and cleaning pipe are the double-layer pipeline of contact each other, cleaning pipe includes the inlet channel and the drain pipe 53 that communicate with heater 52, high temperature steam and liquid are partly discharged to the outdoor through 2 wind channels of fan, the sewage of another part high temperature steam condensation becomes liquid, sewage is by upper blowdown groove 56, 56 'is collected and leads to sewer pipe 57 through sewage pipes 55, through setting up cleaning pipe and sewage pipes 55 to the double-layer pipeline of contact each other, the high temperature high pressure water channel of accessible lower floor heats sewage in the upper blowdown pipe 55, make the greasy dirt can not condense in upper blowdown groove 56, 56' and sewage pipes 55, sewage can discharge smoothly and difficult sewage pipes 55.
In order to prevent the oil smoke detection device 3 from being damaged by a damp environment, the light emitter 31 and the light receiver 32 are respectively arranged in the box bodies 34 and 34 ' with one open ends, the openings of the box bodies 34 and 34 ' are oppositely arranged, the openings of the box bodies 34 and 34 ' are sealed by the lenses 33 and 33 ', the light emitter 31 emits detection light to enter the light ray area through the lenses 33 and 33 ', the detection light passes through the lenses 33 and 33 ' after being reflected or refracted by oil smoke and is collected by the light receiver 32, the oil smoke detection device 3 is cleaned to be in a high-temperature environment, the lenses 33 and 33 ' are made of high-temperature resistant materials, the lenses 33 and 33 ' are made of high-temperature resistant glass lenses, and the lenses 33 and 33 ' are made of common high-temperature resistant glass lenses.
As shown in fig. 6, a method for controlling a range hood includes a control device collecting illumination intensity of detection light emitted by a light emitter 31 and illumination intensity of detection light collected by a light receiver 32 after oil smoke reflection or refraction, converting detected optical signals into electrical signals of oil smoke concentration values, and controlling a fan rotation speed according to changes in the oil smoke concentration values, and mainly includes the following steps:
boot step S0: the range hood enters a standby state after being started, the start of work or the start of cleaning can be selected through a user operation interface on the control panel 11, and if the start of work is selected, an S1 automatic working program is selected for running; if the starting of cleaning is selected, the range hood automatically operates according to an S2 cleaning program; in the automatic working process, if the difference of the illumination intensity values of the detection light rays emitted or received by the oil smoke detection device is continuously large, the cleaning program can be selected to be started. Because the illumination intensity difference that the greasy dirt pollutes the lens and leads to detecting light is great, the fan lasts high-speed operation when the oil smoke is less, and the user can manually choose to start cleaning procedure.
Automatic operation program S1:
parameter setting step S11: finishing parameter setting of the rotating speed of the control fan 2 or according to a default set value on a user operation interface of the control panel 11;
the control device is preset with parameters including sensitivity K and maximum illumination intensity M. The maximum illumination intensity M can be reset by a user after the new machine is assembled or when the environment is greatly changed, sensitivity adjustment and maximum illumination intensity resetting are introduced in the oil smoke concentration control process, different sensitivities can be set according to different environments to complete difference control, and the device has stronger environment adaptability.
Start operation step S12: the range hood is started to enter a working state through a user operation interface of the control panel 11, and the fan 2 runs at a default initial speed.
Determination step S13: the oil smoke detection device starts to detect the oil smoke concentration, the control device determines a real-time oil smoke concentration value through a detection signal of the collected light receiver, and compares the oil smoke concentration value with an oil smoke concentration threshold value preset by the control device.
Adjustment step S14: if the oil smoke concentration value is larger than the oil smoke concentration threshold value, the control device completes the adjustment of the rotating speed of the fan according to the detected parameters, and returns to the step S13.
Shutdown step S15: if the oil smoke concentration value detected by the oil smoke detection device in the time T1 is continuously smaller than the oil smoke concentration threshold value, if the T1 is 30s-90s, the fan 2 works at a low rotating speed T2, if the T2 is 2-3 minutes, the fan 2 stops working, and the range hood enters a standby state.
In the determining step S13 and the adjusting step S14, the light emitter 31 emits detection light, the detection light is collected by the light receiver 32 after being reduced by the reflection or refraction of the soot, and the control device detects the signals of the light emitter 31 and the light receiver 32 to obtain the soot concentration V, the preset sensitivity K and the maximum illumination intensity M to control the rotation speed of the fan 2, thereby realizing effective energy consumption and soot suction control, and the specific control method is as follows:
a. calculating the concentration difference N1-V-M;
b. the final difference is calculated by sensitivity: n2 ═ N1 × K;
c. obtaining a comparison relation between the concentration difference N2 and the rotating speed U of the fan 2: the concentration difference range maps the motor adjustable range.
During mapping, when the concentration difference value is low, the fan 2 can be stopped after running for a period of time at a low rotating speed, and automatic adjustment is continued when the concentration difference value is high.
Cleaning procedure S2:
warming step S21: the control device starts a liquid injection switch to add water into the heater 52 and starts the heater 52 to heat;
spray rinsing step S22: after the specified temperature is reached to 90-100 ℃, the control device opens the cleaning spray heads 51, 51 'to spray and wash the lenses 33, 33';
a blowdown step S33: after the spray washing is completed, the fan 2 is started to drive the air flow to dry, a part of sewage is discharged through the sewage discharge pipeline 55, and after the washing process is completed, the range hood enters a standby state.
The signal that maximum illumination intensity M can light receiver 32 when fan 2 of cleaning process air-dries obtains, because the cleaning process is gone on under the condition that does not have the oil smoke to send, consequently can obtain maximum illumination intensity, and this acquisition mode need not carry out the contrast calculation to ambient light, has realized the one-to-one send and receive mode, labour saving and time saving, convenient operation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (13)
1. The utility model provides a smoke ventilator, includes smoke ventilator's body (1), and body (1) is inside to be provided with fan (2), controlling means and oil smoke detection device (3), its characterized in that: the top surface of the body (1) is provided with a smoke guide pipe (4) communicated with the body (1), the oil smoke detection device (3) is arranged at an air outlet of the range hood, the oil smoke detection device (3) is arranged between the fan (2) and the smoke guide pipe (4), the oil smoke detection device (3) comprises a light emitter (31) and a light receiver (32), the light emitter (31) and the light receiver (32) of the oil smoke detection device (3) are oppositely arranged at two sides of the axial lead of the smoke guide pipe (4), the control device is electrically connected with the fan (2), the light emitter (31) emits detection light, the light receiver (32) collects the detection light reflected and/or refracted by the oil smoke, the control device is electrically connected with the light emitter (31) and the light receiver (32), the detected light signal is converted into an electric signal of an oil smoke concentration value, the rotating speed of the fan (2) is adjusted according to, the range hood also comprises a cleaning device (5) for cleaning the oil smoke detection device (3), wherein the cleaning device (5) comprises a cleaning spray head which is arranged close to the light emitter (31) and the light receiver (32); a sewage discharge pipeline (55) is arranged above the cleaning device (5), a sewage discharge groove for collecting sewage is arranged at the end part of the sewage discharge pipeline (55) close to the cleaning spray head, and the sewage discharge pipeline (55) and the cleaning pipeline are double-layer pipelines which are mutually contacted.
2. The range hood of claim 1, wherein: the front side of the range hood body (1) is provided with a control panel (11), a user operation interface is arranged on the control panel (11), the control device is electrically connected with the control panel (11), and parameters for controlling the rotating speed of the fan (2) are set through the control panel (11).
3. The range hood of claim 1, wherein: the cleaning device (5) comprises two cleaning spray heads (51, 51 '), wherein one cleaning spray head (51) is arranged obliquely below the transmitting end of the light transmitter (31), the cleaning spray head (51) sprays high-temperature steam from bottom to top to decontaminate the light transmitter (31), the other cleaning spray head (51 ') is arranged obliquely below the receiving end of the light receiver (32), and the cleaning spray head (51 ') sprays high-temperature steam from bottom to top to decontaminate the light receiver (32).
4. The range hood of claim 3, wherein: the cleaning nozzles (51, 51 ') are respectively arranged at two ends of the liquid outlet pipeline (53), the other end of the liquid outlet pipeline (53) is connected with the heater (52), and the heater (52) and the cleaning nozzles (51, 51') are respectively connected with the control device.
5. The range hood of claim 4, wherein: the heater (52) is connected with the liquid supplementing device (54) through a liquid inlet pipeline, a liquid injection switch is arranged on the liquid inlet pipeline, and the liquid injection switch is connected with the control device.
6. The range hood of claim 5, wherein: the liquid supplementing device (54) is a water tank which is fixed on the top surface of the body (1).
7. The range hood of claim 5, wherein: the liquid supplementing device (54) is a pipeline directly communicated with tap water.
8. The range hood of claim 1, wherein: the sewage drain pipe (55) discharges the collected sewage to the sewer pipe (57).
9. The range hood of claim 1, wherein: the light emitter (31) and the light receiver (32) are respectively arranged in a box body (34, 34 ') with an opening at one end, the openings of the box bodies (34, 34') are oppositely arranged, and the openings of the box bodies (34, 34 ') are sealed through lenses (33, 33').
10. The range hood of claim 9, wherein: the lenses (33, 33') are glass lenses.
11. A control method of a hood according to any one of claims 1-10, characterized in that: the control device is used for collecting the illumination intensity of detection light rays emitted by the light emitter (31) and the illumination intensity of detection light rays collected by the light receiver (32) after oil smoke reflection and/or refraction, converting detected optical signals into electric signals of oil smoke concentration values, and controlling the rotating speed of the fan according to the change of the oil smoke concentration values, and mainly comprises the following steps:
start step S0: the range hood enters a standby state after being started, and the range hood is selected to start working through a user operation interface on a control panel (11);
parameter setting step S11: finishing parameter setting of the rotating speed of the control fan (2) on a user operation interface of the control panel (11) or according to a default set value;
start operation step S12: starting the range hood to enter a working state through a user operation interface of the control panel (11), and operating the fan (2) at a default initial speed;
determination step S13: the oil smoke detection device (3) starts to detect the oil smoke concentration, the control device determines a real-time oil smoke concentration value by collecting a detection signal of the light receiver (32), and compares the oil smoke concentration value with an oil smoke concentration threshold value preset by the control device;
adjustment step S14: if the oil smoke concentration value is larger than the oil smoke concentration threshold value, the control device completes the adjustment of the rotating speed of the fan according to the detected parameters, and returns to the step S13;
shutdown step S15: if the oil smoke concentration value is continuously smaller than the oil smoke concentration threshold value, the fan (2) stops working after the fan (2) works for a period of time at a low rotating speed, and the range hood enters a standby state;
the control method also comprises the step of cleaning the oil smoke detection device (3), wherein the cleaning process comprises the following steps:
spray rinsing step S22: the control device opens the cleaning spray head (51, 51 ') to spray and clean the lens (33, 33');
a blowdown step S33: after the spray washing is finished, the fan (2) is started to drive the air flow to air-dry, a part of dirty liquid is discharged through the sewage discharge pipeline (55), and after the washing process is finished, the range hood enters a standby state.
12. The control method according to claim 11, characterized in that: the method for controlling the rotating speed of the fan (2) from the judging step S13 to the adjusting step S14 comprises the following steps: the light emitter (31) emits detection light, the detection light is collected by the light receiver (32) after the reflection and/or refraction of the oil smoke is reduced, the control device detects signals of the light emitter (31) and the light receiver (32) to obtain the oil smoke concentration V, the sensitivity K preset by the control device and the maximum illumination intensity M to control the rotating speed of the fan (2).
13. The control method according to claim 11, characterized in that: before the spray washing step S22, a heating step S21 is included, the control device starts the liquid injection switch to add liquid into the heater (52), the heater (52) is started to heat, and after the liquid reaches a specified temperature, the spray washing step S22 is carried out.
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| CN110469890A (en) * | 2019-09-17 | 2019-11-19 | 李尚福 | Automatic cleaning fume extractor |
| CN110632014A (en) * | 2019-09-25 | 2019-12-31 | 佛山市顺德区美的洗涤电器制造有限公司 | Kitchen appliance, control method thereof, and computer-readable storage medium |
| CN110617535B (en) * | 2019-09-25 | 2021-03-19 | 佛山市顺德区美的洗涤电器制造有限公司 | Kitchen device |
| WO2021056860A1 (en) * | 2019-09-25 | 2021-04-01 | 佛山市顺德区美的洗涤电器制造有限公司 | Kitchen appliance |
| WO2021056861A1 (en) * | 2019-09-25 | 2021-04-01 | 佛山市顺德区美的洗涤电器制造有限公司 | Kitchen device |
| CN110617522B (en) * | 2019-09-25 | 2021-11-19 | 佛山市顺德区美的洗涤电器制造有限公司 | Kitchen appliance |
| CN110617533A (en) * | 2019-09-25 | 2019-12-27 | 佛山市顺德区美的洗涤电器制造有限公司 | Kitchen appliance |
| CN111174251A (en) * | 2020-01-07 | 2020-05-19 | 珠海格力电器股份有限公司 | Range hood obstacle detection method and range hood |
| CN113188165B (en) * | 2020-01-14 | 2022-08-12 | 宁波方太厨具有限公司 | Cooking fume exhauster |
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| CN105318384A (en) * | 2014-08-01 | 2016-02-10 | 青岛海尔智能技术研发有限公司 | Range hood and wind speed regulating system and method thereof |
| CN105091059B (en) * | 2015-09-12 | 2018-01-26 | 徐建立 | Cleaning device for cooking fume exhauster and its control method |
| CN105371329B (en) * | 2015-11-09 | 2018-06-26 | 浙江苏泊尔家电制造有限公司 | The control method and device of range hood |
| CN107676838A (en) * | 2017-11-07 | 2018-02-09 | 佛山市云米电器科技有限公司 | Secondary system, the method and device of oil smoke induction system |
| CN207521339U (en) * | 2017-11-07 | 2018-06-22 | 佛山市云米电器科技有限公司 | Lens cleaning device and kitchen ventilator camera lens |
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