CN210373604U - Range hood and oil contamination degree detection device thereof - Google Patents
Range hood and oil contamination degree detection device thereof Download PDFInfo
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- CN210373604U CN210373604U CN201920987862.6U CN201920987862U CN210373604U CN 210373604 U CN210373604 U CN 210373604U CN 201920987862 U CN201920987862 U CN 201920987862U CN 210373604 U CN210373604 U CN 210373604U
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- 238000001514 detection method Methods 0.000 title claims abstract description 83
- 238000011109 contamination Methods 0.000 title claims abstract description 13
- 239000000779 smoke Substances 0.000 claims abstract description 72
- 239000006096 absorbing agent Substances 0.000 claims abstract description 23
- 239000006233 lamp black Substances 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 9
- 239000003517 fume Substances 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 abstract description 5
- 230000002688 persistence Effects 0.000 abstract description 3
- 241000208125 Nicotiana Species 0.000 abstract description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
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Abstract
The utility model discloses a range hood and an oil contamination degree detection device thereof, the detection device comprises a capacitance detection module and a control module, the input end of the capacitance detection module is connected with a capacitance component, and the capacitance detection module is used for detecting the capacitance value generated by the oil smoke flowing through a smoke guide pipe; the control module is connected with the output end of the capacitance detection module and judges the oil stain degree of the range hood according to the capacitance value detected by the capacitance detection module; the lampblack absorber, including collection petticoat pipe, fan and the greasy dirt degree detection device that foretell lampblack absorber used, the inside flue that sets up of collection petticoat pipe, the entrance of flue sets up the filter screen, lead the tip of tobacco pipe and the export intercommunication of flue, the fan sets up in the wind channel. Detection device set up in the flue outside, the polar plate setting of condenser is outside at the flue, does not receive the corruption of oil smoke, the precision that detects is higher, the persistence is high, also can avoid the particulate matter in the oil smoke to cause the damage to detection device.
Description
Technical Field
The utility model relates to a lampblack absorber especially relates to an greasy dirt degree detection device and lampblack absorber that lampblack absorber used.
Background
When the range hood is used in a kitchen, oil smoke generated by filtering the oil smoke by the filter screen can adhere to certain oil smoke materials, and when the range hood is used for a long time, the oil smoke can block meshes of the filter screen, so that the air quantity of the fan and the smoking effect of the range hood are seriously influenced.
At present, the range hood cannot accurately judge the oil stain degree of the metal filter screen, so that a user cannot timely clean the metal filter screen and the metal oil guide groove, and the use effect of the whole machine and the sanitation of a kitchen are affected.
The prior art regularly reminds the consumer to wash the filter screen when general, but because there is the difference in user's culinary art mode, the oil smoke volume that leads to producing is different, to regularly reminding the mode, often leads to some families when reminding, the filter screen is still clean, and some families are when not reaching the warning time, and the oil stain on the filter screen has blockked up the mesh, consequently can not remove the jam condition of reminding the consumer filter screen according to actual conditions.
Chinese patent with patent number CN207922322U discloses a lampblack absorber of wasing filter screen is reminded to intelligence, is equipped with intelligent reminding device in the organism, sets up the oil smoke passageway in the organism, is equipped with the sensor that is used for detecting the wind pressure and the amount of wind or the wind speed of the oil smoke that gets into the wind wheel in the oil smoke passageway to remind the user to wash the filter screen. But this intelligent reminding device's sensor directly sets up in the wind channel, and inevitable meeting receives the influence of oil smoke, leads to its sensitivity that detects to reduce to carry fast-speed particulate matter in the wind channel, the sensor receives the high striking of particulate matter, probably leads to the probe to damage, influences intelligent reminding device's life.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lampblack absorber and greasy dirt degree detection device thereof to on the one hand, to solve the technical problem that current lampblack absorber intelligence reminding device receives the detectivity that the oil smoke influence leads to reduces, on the other hand, with the technical problem who solves the intelligent reminding device of current lampblack absorber high price, life weak point.
In order to achieve the above object, the utility model discloses a lampblack absorber and greasy dirt degree detection device's specific technical scheme as follows:
the utility model provides an greasy dirt degree detection device that lampblack absorber used, lampblack absorber include collection petticoat pipe and smoke guide pipe, the outlet flue and the smoke guide pipe intercommunication of collection petticoat pipe, with be close to collection petticoat pipe outlet flue department sets up capacitance assembly on the smoke guide pipe, detection device includes:
the input end of the capacitance detection module is connected with the capacitance component, and the capacitance detection module is used for detecting a capacitance value generated by the oil smoke flowing through the smoke guide pipe;
and the control module is connected with the output end of the capacitance detection module, and judges the oil contamination degree of the range hood according to the capacitance value detected by the capacitance detection module.
Furthermore, the capacitance assembly comprises a first electrode plate and a second electrode plate which are oppositely arranged on the outer wall of the smoke guide pipe, and the two electrode plates and the oil smoke flowing through the smoke collection cover form a flat capacitor.
Furthermore, a first input end of the capacitance detection module is connected with the first electrode plate, and a second input end of the capacitance detection module is connected with the second electrode plate.
Further, when the control module judges the oil stain degree of the range hood according to the capacitance value, wherein,
and if the absolute value of the difference value between the capacitance value and the capacitance value of the capacitance component which is tested for the first time after the range hood is cleaned is larger than a preset threshold value, cleaning prompting is carried out on the range hood.
Further, the detection device further comprises a power module for providing power for the detection device.
Further, the detection device further comprises a prompt module, the prompt module is connected with the control module, and the control module carries out cleaning prompt on the range hood through the prompt module.
Further, the prompt module comprises a display unit and a voice unit.
Furthermore, the detection device is provided with a weight sensor, the weight sensor is arranged on the inner wall of the smoke guide pipe, the weight of the oil sludge adhered to the smoke guide pipe is tested through the weight sensor, and the weight sensor is connected with the control module.
The utility model provides a range hood, includes collection petticoat pipe, fan and the greasy dirt degree detection device that foretell lampblack absorber used, the inside flue that sets up of collection petticoat pipe, the entrance of flue sets up the filter screen, lead the tip of tobacco pipe and the export intercommunication of flue, the fan sets up in the wind channel.
The utility model discloses a lampblack absorber and greasy dirt degree detection device thereof has following advantage:
greasy dirt degree detection device set up in the flue outside, detection device is a simple electric capacity, through the concentration of the inside oil smoke of electric capacity detection flue to remind the user in good time to wash the filter screen, in this cleaning method, the polar plate setting of the condenser of detection usefulness is outside at the flue, does not receive the corruption of oil smoke, the precision of detection is higher, the persistence is high, also can avoid the particulate matter in the oil smoke to cause the damage to detection device.
Further, detection device set up outside the flue, the wiring is simple, dismantle simple and easy, after oil smoke concentration obviously reduces, remind the user to wash the filter screen, the method is simple.
Finally, the lampblack absorber through the concentration that adopts the electric capacity setting outside the flue to detect the inside oil smoke of flue, this detection mode can prolong detection device's life greatly, and low cost, be convenient for promote on a large scale.
Drawings
FIG. 1 is a schematic structural view of the range hood of the present invention;
fig. 2 is a schematic structural view of a first embodiment of the oil contamination degree detection device for the range hood of the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of the oil contamination degree detection device for the range hood of the present invention.
The reference numbers in the figures illustrate: 1. a smoke collecting hood; 2. a filter screen; 3. a fan; 4. a smoke guide pipe; 5. a capacitive component; 51. a first electrode plate; 52. a second electrode plate; 6. a capacitance detection module; 7. a prompt module; 8. a control module; 9. a weight sensor; 10. and a power supply module.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the following figures are combined to describe the range hood and the oil contamination degree detecting device in further detail.
As shown in fig. 1, the utility model discloses an greasy dirt degree detection device that lampblack absorber used, wherein, the lampblack absorber includes collection petticoat pipe 1 and smoke guide pipe 4, and the outlet flue of collection petticoat pipe 1 communicates with smoke guide pipe 4, is close to and sets up electric capacity component 5 on the smoke guide pipe 4 of collection petticoat pipe 1 outlet flue department, and electric capacity component 5 is including setting up first plate electrode 51 and the second plate electrode 52 at smoke guide pipe 4 outer wall relatively, and the oil smoke that just flows through between two plate electrodes and the two plate electrodes in the smoke guide pipe 4 constitutes a plate capacitor.
The detection device comprises:
a capacitance detection module 6, a first input end of the capacitance detection module 6 is connected with the first electrode plate 51, a second input end of the capacitance detection module 6 is connected with the second electrode plate 52, and the capacitance detection module 6 is used for detecting a capacitance value generated by the oil smoke flowing through the smoke guide pipe 4;
control module 8, control module 8 links to each other with capacitance detection module 6's output, and control module 8 judges the greasy dirt degree of lampblack absorber according to the capacitance value that capacitance detection module 6 detected. After the range hood starts to work, the capacitance detection module 6 detects the capacitance value between the first electrode plate 51 and the second electrode plate 52 and transmits the detection result to the control module 8, and the control module 8 can judge the oil stain degree of the range hood according to the detected capacitance value because the capacitance value is related to the dielectric constant of particles in the smoke guide pipe 4, thereby reminding a user to clean.
Further, when the control module 8 judges the oil stain degree of the range hood according to the capacitance value, if the absolute value of the difference between the capacitance value and the capacitance value tested for the first time by the capacitance component 5 after the range hood is cleaned is greater than a preset threshold value, the prompt for cleaning the range hood is given. When the distance between the two electrode plates and the facing area of the electrode plates are determined, the capacitance value of the plate capacitor is only related to the dielectric constant of the particles and is in a direct proportion relation. After the lampblack absorber ran for a period of time, the greasy dirt was attached to on filter screen 2 and the fan 3, on the one hand, the mesh of filter screen 2 was blockked up to the greasy dirt, on the other hand the greasy dirt was attached to and is influenced its work efficiency on fan 3, thereby lead to the concentration reduction of the greasy dirt that enters into in leading cigarette pipe 4 under the same 3 rotational speeds of fan, and then make the dielectric constant between the two plate electrodes change, the capacitance value that electric capacity detection device surveyed changes, control module 8 judges the greasy dirt degree of lampblack absorber according to the change of capacitance value.
The power module 10: for supplying electrical energy to the detection means.
Further, as shown in fig. 2-3, the oil contamination degree detection device of the range hood further comprises a prompt module 7, the prompt module 7 is connected with a control module 8, the control module 8 carries out cleaning prompt on the range hood through the prompt module 7, and the control module 8 comprises a display unit and a voice unit. When the control module 8 determines that the capacitance difference between the capacitance value and the initial capacitance value is greater than the preset threshold value, the control module 8 sends a cleaning instruction and transmits a signal to the display unit and/or the voice unit so as to prompt a user through the display unit and/or the voice unit. The display unit can be light display or display screen display, and light display can be the LED lamp that sets up on collection petticoat pipe 1 and shows, and speech unit can be bee calling organ etc..
When the range hood is used for a period of time, a layer of oil sludge adheres to the inner wall of the smoke guide pipe 4, so that a capacitance value measured by the capacitance detection module 6 is influenced, the capacitance value measured by the capacitance detection module 6 is a capacitance value of combined action of the oil sludge attached to the inside of the smoke guide pipe 4 and oil smoke flowing through the smoke guide pipe 4, the capacitance value is formed by connecting two capacitors in series, and a measured equivalent capacitance formula is as follows:
C＝1/(1/Ccigarette with heating means+1/CMud+1/CMud)
Wherein, CCigarette with heating meansIs the equivalent capacitance C generated when the oil smoke in the smoke guide pipe 4 flowsMudThe equivalent capacitance is generated by the oil sludge attached to the inner wall of the smoke guide tube 4.
According to the calculation formula of the capacitor capacitance:
C＝ε0εS/d
wherein C is a capacitance value, ε 0 is a dielectric constant in vacuum, ε is a dielectric constant of a material between two electrode plates, S is an area of the electrode plates of the flat capacitor, and d is a distance between the two electrode plates.
It is known that CCigarette with heating meansAnd CMudThe difference exists only between epsilon and d, where epsilon is the dielectric constant of the material, so obtaining the equivalent thickness of the material is a critical quantity.
In order to obtain the thickness of the oil sludge attached to the inner wall of the smoke guiding pipe 4, as shown in fig. 3, the detection device is provided with a weight sensor 9, the weight sensor 9 is arranged on the inner wall of the smoke guiding pipe 4, the weight of the oil sludge attached to the smoke guiding pipe 4 is tested through the weight sensor 9, so as to calculate the thickness of the attached oil sludge, the equivalent thickness of the oil fume area is equal to the distance between the two electrode plates minus the thickness of the attached oil sludge, the control module 8 calculates the equivalent capacitance generated when the oil fume in the smoke guiding pipe 4 flows according to the measured capacitance value, and the weight sensor 9 is connected with the control module 8.
As shown in figure 1, the range hood comprises a smoke collecting cover 1, a fan 3 and the oil stain degree detection device for the range hood, wherein a flue is arranged inside the smoke collecting cover 1, a filter screen 2 is arranged at an inlet of the flue, and the fan 3 is arranged in the flue. The top of the smoke collecting hood 1 is provided with a smoke guide pipe 4, and the end part of the smoke guide pipe 4 is communicated with the outlet of the flue.
This greasy dirt degree detection device sets up in the flue outside, and detection device includes capacitance assembly 5, detects the concentration of the inside oil smoke of flue through capacitance assembly 5 to remind the user in good time to wash filter screen 2, in this cleaning method, the polar plate setting of the condenser of detection usefulness is outside at the flue, does not receive the corruption of oil smoke, and the precision that detects is higher, the persistence is high, also can avoid the particulate matter in the oil smoke to cause the damage to detection device. The detection device is arranged outside the flue, is simple in wiring and easy and practical to disassemble, and when the concentration of the oil smoke is obviously reduced, a user is reminded to clean the filter screen 2, and the method is simple. This lampblack absorber detects the concentration of the inside oil smoke of flue through the electric capacity that adopts the setting to be outside at the flue, and this detection mode can prolong detection device's life greatly, and low cost is convenient for promote on a large scale.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.
Claims (8)
1. The utility model provides an greasy dirt degree detection device that lampblack absorber used, its characterized in that, lampblack absorber include collection petticoat pipe (1) and smoke guide pipe (4), the outlet flue and smoke guide pipe (4) intercommunication of collection petticoat pipe (1), with be close to set up capacitor assembly (5) on smoke guide pipe (4) of collection petticoat pipe (1) outlet flue department, detection device includes:
the input end of the capacitance detection module (6) is connected with the capacitance component (5), and the capacitance detection module (6) is used for detecting a capacitance value generated by the oil smoke flowing through the smoke guide pipe (4);
the control module (8), the control module (8) is connected with the output end of the capacitance detection module (6), and the control module (8) judges the oil stain degree of the range hood according to the capacitance value detected by the capacitance detection module (6); wherein,
the capacitor assembly (5) comprises a first electrode plate (51) and a second electrode plate (52) which are oppositely arranged on the outer wall of the smoke guide pipe (4), and the two electrode plates and the oil smoke flowing through the smoke collection cover (1) form a flat capacitor.
2. The oil contamination degree detection device for the range hood according to claim 1, wherein a first input end of the capacitance detection module (6) is connected with the first electrode plate (51), and a second input end of the capacitance detection module (6) is connected with the second electrode plate (52).
3. The oil contamination degree detection device for the range hood according to claim 1, wherein the control module (8) determines the oil contamination degree of the range hood according to the capacitance value,
and if the absolute value of the difference value between the capacitance value and the capacitance value of the capacitance component (5) which is tested for the first time after the range hood is cleaned is larger than the preset threshold value, cleaning prompting is carried out on the range hood.
4. The oil contamination degree detection apparatus for a range hood according to claim 1, wherein the detection apparatus further comprises a power module (10) for supplying power to the detection apparatus.
5. The oil stain degree detection device for the range hood according to claim 1, wherein the detection device further comprises a prompt module (7), the prompt module (7) is connected with the control module (8), and the control module (8) carries out cleaning prompt on the range hood through the prompt module (7).
6. The oil contamination degree detection device for the range hood according to claim 5, wherein the prompt module (7) comprises a display unit and a voice unit.
7. The oil stain degree detection device for the range hood according to claim 1, wherein the detection device further comprises a weight sensor (9), the weight sensor (9) is arranged on the inner wall of the smoke guide pipe (4), the weight of oil sludge adhered to the smoke guide pipe (4) is tested through the weight sensor (9), and the weight sensor (9) is connected with the control module (8).
8. A range hood, characterized by that, including collecting the fume hood (1), the blower (3) and according to the greasy dirt degree checkout gear that the ventilator of any claim 1-7 used, set up the flue in the said collecting the fume hood (1), the entrance to the said flue sets up the filter screen (2), the end of the said smoke guiding pipe (4) communicates with outlet port of the flue, the said blower (3) is set up in the wind channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920987862.6U CN210373604U (en) | 2019-06-28 | 2019-06-28 | Range hood and oil contamination degree detection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920987862.6U CN210373604U (en) | 2019-06-28 | 2019-06-28 | Range hood and oil contamination degree detection device thereof |
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| Publication Number | Publication Date |
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| CN210373604U true CN210373604U (en) | 2020-04-21 |
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| CN201920987862.6U Expired - Fee Related CN210373604U (en) | 2019-06-28 | 2019-06-28 | Range hood and oil contamination degree detection device thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128803A (en) * | 2020-09-25 | 2020-12-25 | 珠海格力电器股份有限公司 | Method and device for monitoring oil stain in oil box and integrated stove |
| CN114576671A (en) * | 2022-05-09 | 2022-06-03 | 杭州老板电器股份有限公司 | Self-cleaning oil screen device, self-cleaning method thereof and range hood |
| CN118654321A (en) * | 2024-08-22 | 2024-09-17 | 珠海格力电器股份有限公司 | Control method and device of range hood and range hood |
-
2019
- 2019-06-28 CN CN201920987862.6U patent/CN210373604U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128803A (en) * | 2020-09-25 | 2020-12-25 | 珠海格力电器股份有限公司 | Method and device for monitoring oil stain in oil box and integrated stove |
| CN114576671A (en) * | 2022-05-09 | 2022-06-03 | 杭州老板电器股份有限公司 | Self-cleaning oil screen device, self-cleaning method thereof and range hood |
| CN118654321A (en) * | 2024-08-22 | 2024-09-17 | 珠海格力电器股份有限公司 | Control method and device of range hood and range hood |
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Granted publication date: 20200421 |