CN110579317A - Oil smoke leakage monitoring device and monitoring method of oil smoke purifying device - Google Patents
Oil smoke leakage monitoring device and monitoring method of oil smoke purifying device Download PDFInfo
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- CN110579317A CN110579317A CN201910779008.5A CN201910779008A CN110579317A CN 110579317 A CN110579317 A CN 110579317A CN 201910779008 A CN201910779008 A CN 201910779008A CN 110579317 A CN110579317 A CN 110579317A
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- 239000000779 smoke Substances 0.000 title claims abstract description 114
- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 68
- 238000000746 purification Methods 0.000 claims abstract description 14
- 239000006233 lamp black Substances 0.000 claims description 13
- 239000003517 fume Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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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
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- General Physics & Mathematics (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Air Conditioning Control Device (AREA)
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Abstract
The invention discloses a range hood oil smoke purification device, which comprises a first detection unit, a second detection unit and a controller, wherein the first detection unit and the second detection unit are used for detecting the concentration of oil smoke, the controller is respectively and electrically connected with the first detection unit and the second detection unit, the first detection unit is arranged in an oil smoke channel in the range hood of the oil smoke purification device, and the second detection unit is arranged above an outlet flue of the oil smoke purification device. The monitoring method of the monitoring device is also disclosed. Compared with the prior art, the invention has the advantages that: by arranging the two groups of detection units, the oil smoke concentration at the corresponding position can be automatically detected, and whether oil smoke leakage exists or not is judged according to comparison of increased amount in a certain time interval, so that the problem that whether the oil smoke leakage exists in the outlet flue can be monitored only manually in the past is solved, and the defects of an oil smoke leakage monitoring method of an outlet flue system are overcome; two different sensors for detecting the oil smoke concentration are combined for comprehensive judgment, so that the misjudgment can be effectively reduced.
Description
Technical Field
The invention relates to an oil fume purification device, in particular to an oil fume leakage monitoring device of the oil fume purification device and a monitoring method of the device.
background
The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The common range hood comprises a fume collecting hood, a fan cover, a fan system arranged in the fan cover and an outlet flue connecting an air outlet of the fan system with a common flue.
The kitchen oil smoke discharge system disclosed in the Chinese patent with the application number of 201310071428.0 comprises a range hood, a check valve, a smoke discharge pipe and a common flue, wherein the smoke discharge pipe is directly and hermetically connected with the common flue; also like the split type range hood disclosed in chinese patent with application No. 201410030650.0, the split type range hood includes a fan, a fan power supply control box, a smoke exhaust pipe, a common flue and a range hood body, a main air chamber is provided on the range hood body, the smoke exhaust pipe is connected with the main air chamber, and the fan is installed between the common flue and the smoke exhaust pipe.
At present, the problem of smoke leakage of an outlet pipeline of the range hood is mostly caused by the damage or poor installation of a pipeline or a check valve of an outlet flue. The oil smoke leakage (leaking smoke) of the outlet flue system not only pollutes the indoor environmental sanitation, but also can seriously affect the health of residents.
Aiming at the problem of smoke leakage in an outlet flue, most of the existing range hoods have no monitoring function and can only be found manually, and then a new smoke pipe or a check valve is installed or replaced to solve the problem. However, manual monitoring is time-consuming and labor-consuming, and the manual monitoring is not standard, which is easy to generate misjudgment.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a device for monitoring oil smoke leakage of an oil smoke purification device, which can conveniently realize active monitoring of oil smoke leakage of an outlet flue, and has accurate monitoring result and less possibility of generating misjudgment.
the second technical problem to be solved by the present invention is to provide a monitoring method of the above monitoring device.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a fume purification device's oil smoke leakage monitoring device which characterized in that: including first detecting element, the second detecting element that is used for detecting oil smoke concentration and the controller of being connected with first detecting element and second detecting element electricity respectively, first detecting element sets up in range hood inside oil smoke passageway of oil smoke purifier, the second detecting element sets up in oil smoke purifier's export flue top.
In order to increase the reliability of the detection result and reduce the misjudgment, the first detection unit comprises at least two sensors with different types and used for detecting the oil smoke concentration, the second detection unit comprises at least two sensors with different types and used for detecting the oil smoke concentration, and the sensor types of the two detection units correspond to each other.
In order to ensure that the oil smoke leakage condition of the whole outlet flue is detected as far as possible, the outlet flue comprises an air outlet cover arranged at the outlet of the range hood, an outlet smoke pipe and a check valve, one end of the outlet smoke pipe is connected with the air outlet cover, the other end of the outlet smoke pipe is used for being connected with the public flue, the check valve is used for being arranged at the joint of the outlet smoke pipe and the public flue, and the second detection unit is arranged above the middle of the central line of the outlet smoke pipe.
the technical scheme adopted by the invention for solving the second technical problem is as follows: a monitoring method of a lampblack leakage monitoring device of a lampblack purification device, which is characterized in that: the method comprises the following steps:
1) starting a smoke monitoring function, and continuously monitoring by the first detection unit and the second detection unit;
2) The controller receives signals of the first detection unit and the second detection unit, judges whether oil smoke signals are detected within unit time delta t, if yes, the step 3 is carried out, and if not, the indoor oil smoke is not generated and the oil smoke is not reversely flowed;
3) In a time interval delta t', the two sensors of the first detection unit respectively monitor the increase of the feedback signals as delta Y1 and delta X1, and the two sensors of the second detection unit respectively monitor the increase of the feedback signals as delta Y2 and delta X2; feedback signals of the first detection unit and the second detection unit are transmitted to the controller;
4) the controller calculates the increment of feedback signals of the same type of sensors in the first detection unit and the second detection unit in a time interval delta t ', wherein delta X ' is delta X2-delta X1, and delta Y ' is delta Y2-delta Y1, judges whether the delta X ' and the delta Y ' are both in corresponding preset ranges, and returns to the step 3) if both or one of the delta X ' and the delta Y ' is yes, the detection is carried out again, and if both are not yes, the oil smoke leakage of the outlet flue is judged.
Preferably, in step 4), the preset range is set such that, when the range hood is in operation and it is determined that no oil smoke leaks from the outlet flue, the first detection unit outputs increase amounts Δ Y1 ' and Δ X1 ' of the feedback signals of the two sensors within a time interval Δ t ' according to the continuously flowing smoke; the second detection unit outputs increase amounts Δ Y2 'and Δ X2' of the feedback signals of the two sensors in a time interval Δ t according to the smoke flowing continuously, and the controller records a variation range [ a, b ] of Δ X ″, Δ X2 '- Δ X1', a preset range as one sensor type, and a variation range [ c, d ] of Δ Y1 ″, Δ Y2 '- Δ Y1', a preset range as the other sensor type after a period of time.
Preferably, in order to facilitate the user to intuitively know the detection result, the monitoring device further comprises a prompting component arranged on the range hood, and in the step 4), if the step 3) is returned to, the detection is carried out again, the prompting component outputs a first indicating signal; and if the oil smoke leakage exists in the outlet flue, the prompting component outputs a second indicating signal.
Compared with the prior art, the invention has the advantages that: by arranging the two groups of detection units, the oil smoke concentration at the corresponding position can be automatically detected, whether oil smoke leakage exists or not is judged according to comparison of increased amount in a certain time interval, the problem that whether the oil smoke leakage exists in the outlet flue can be monitored only manually in the past is solved, the detection is convenient, the detection result is reliable, and the defects of an oil smoke leakage monitoring method of an outlet flue system are overcome; two different sensors for detecting the oil smoke concentration are combined for comprehensive judgment, so that the misjudgment can be effectively reduced.
Drawings
Fig. 1 is a schematic view of an oil smoke purifying apparatus according to an embodiment of the present invention;
Fig. 2 is a monitoring flow chart of the monitoring device according to the embodiment of the invention.
Detailed Description
the invention is described in further detail below with reference to the accompanying examples.
Referring to fig. 1, a lampblack purification device comprises a range hood 1 and an outlet flue 2, wherein the outlet flue 2 comprises an air outlet cover 21 connected with an air outlet of the range hood 1, an outlet smoke tube 22 and a check valve 23, two ends of the outlet smoke tube 22 are respectively connected with the air outlet cover 21 and a common flue 3, and the check valve 23 is arranged at the joint of the outlet smoke tube 22 and the common flue 3. The above structure may be the same as the prior art and will not be described herein.
The monitoring device comprises a first detection unit 51 arranged in the oil smoke channel inside the range hood 1, a second detection unit 52 arranged outside the outlet smoke pipe 22 and a controller 53, wherein the first detection unit 51 and the second detection unit 52 are both electrically connected to the controller 53. The controller 53 may be a main controller of the range hood 1, hidden in the range hood 1, or an independent control device. The controller 53 can receive the signals fed back by the first detection unit 51 and the second detection unit 52 to determine whether there is smoke leakage (i.e. whether there is smoke leakage) in the outlet smoke tube 22 of the range hood, so as to prompt the user to take relevant measures, such as re-assembling the outlet smoke tube 22 or the check valve 23, or replacing the outlet smoke tube 22 or the check valve 23, to keep the indoor air fresh.
two sensors of different types are arranged in the first detection unit 51, and both the two sensors can effectively represent the concentration of the oil smoke. The two sensors can be selected from two types of oil smoke concentration sensors, volatile organic compound sensors, ultrasonic oil smoke sensors and the like. Types of sensors include, but are not limited to, the types described above.
Two sensors of different types are arranged in the second detection unit 52, and both the two sensors can effectively represent the concentration of the oil smoke. The two sensors can be selected from two types of oil smoke concentration sensors, volatile organic compound sensors, ultrasonic oil smoke sensors and the like. Types of sensors include, but are not limited to, the types described above. Preferably, the second detecting unit 52 is disposed above the outlet smoke pipe 22 and above the center line of the outlet smoke pipe 22, such as the center line in the horizontal direction shown in fig. 1, to ensure that smoke leakage from the entire outlet flue 2 is detected.
Optionally, the monitoring device further includes a prompt component 54, such as an LED lamp disposed at the front side of the range hood 1, so that the user can know the state of the outlet smoke tube 22 according to the prompt information or decide whether to manually intervene to solve the problem of smoke leakage of the outlet smoke tube 22 according to the prompt information. When the controller 53 determines that the outlet smoke tube 22 is not running smoke, it outputs a first prompt signal, such as a green light. Alternatively, when the controller 53 determines that the outlet smoke tube 22 runs out of smoke, a second prompt signal is output, such as a red light flashing. Alternatively, the first prompt signal and the second prompt signal may be output by the same component or different prompt components respectively.
As shown in fig. 2, the monitoring method of the monitoring device of the lampblack purification device comprises the following steps:
1) Starting a smoke monitoring function, and continuously monitoring by the first detection unit 51 and the second detection unit 52; an active monitoring function key can be arranged on the range hood 1 and can be marked by an early warning icon, and the smoke monitoring is started when the key is pressed down; if the smoke monitoring function does not need to be started, the key is pressed again, and the icon is in a non-lighting state;
2) the controller 53 receives the signals of the first detection unit 51 and the second detection unit 52, judges whether the oil smoke signal is detected in unit time delta t, if yes, the step 3 is carried out, if not, the indoor oil smoke is not generated, and the oil smoke does not flow backwards; for example, the resistance value of the sensor changes with the change of the concentration of the oil smoke flowing through the sensor, and a specific characteristic curve is output, and the controller 53 can distinguish whether the oil smoke exists or not by analyzing the characteristic curve;
3) In the time interval Δ t', the two sensors of the first detecting unit 51 monitor the increase of the feedback signal as Δ Y1 and Δ X1, respectively, and the two sensors of the second detecting unit 52 monitor the increase of the feedback signal as Δ Y2 and Δ X2, respectively; the time interval Δ t' may be set by a user; feedback signals of the first detection unit 51 and the second detection unit 52 are transmitted to the controller 53; the time interval Δ t' and the unit time Δ t may be the same or different;
4) the controller 53 calculates the increase of the feedback signals of the sensors of the same type in the first detection unit 51 and the second detection unit 52 in the time interval Δ t ', where Δ X ' ═ Δ X2- Δ X1 and Δ Y ' ═ Δ Y2- Δ Y1, determines whether both Δ X ' and Δ Y ' are within the corresponding preset ranges, and if both or one of them is yes, returns to step 3), performs detection again, and the green indicator light of the prompting component 54 is on; if the smoke amount detected by the second detection unit 52 is not increased, the smoke leakage in the outlet flue 2 is judged, the red indicator light of the prompt component 54 is turned on, and the next treatment measure is selected by the user.
In step 4), the preset range is set to be that, when the range hood 1 operates and it is determined that the outlet flue 2 does not leak smoke, the first detection unit 51 outputs increase amounts Δ Y1 ' and Δ X1 ' of the feedback signals of the two sensors within a time interval Δ t ' according to the smoke flowing continuously; the second detecting unit 52 outputs the increase amounts Δ Y2 'and Δ X2' of the feedback signals of the two sensors in the time interval Δ t according to the smoke flowing continuously, and the controller 53 records, as time passes, the variation range [ a, b ] of Δ X ″ ═ Δ X2 '- Δ X1', as the preset range of one of the sensor types, and the variation range [ c, d ] of Δ Y1 ″ ═ Δ Y2 '- Δ Y1', as the preset range of the other sensor type.
Optionally, the range hood further includes a function selection device associated with the controller 53 through which the outlet flue monitoring device can be activated or deactivated.
Through set up two sensors in every detecting element, by two sensor cooperations, can reduce the erroneous judgement. Alternatively, the number of sensors may be greater than 2.
Claims (6)
1. the utility model provides a fume purification device's oil smoke leakage monitoring device which characterized in that: including first detecting element (51), second detecting element (52) that are used for detecting oil smoke concentration and controller (53) be connected with first detecting element (51) and second detecting element (52) electricity respectively, first detecting element (51) set up in range hood (1) inside oil smoke passageway of oil smoke purifier, second detecting element (52) set up in oil smoke purifier's export flue (2) top.
2. the lampblack leakage monitoring device of a lampblack purification device according to claim 1, characterized in that: the first detection unit (51) comprises at least two sensors which are different in type and used for detecting the oil smoke concentration, the second detection unit (52) comprises at least two sensors which are different in type and used for detecting the oil smoke concentration, and the sensor types of the two detection units correspond to each other.
3. The lampblack leakage monitoring device of the lampblack purification device according to claim 1 or 2, characterized in that: the outlet flue (2) comprises an air outlet cover (21), an outlet smoke tube (22) and a check valve (23), wherein the air outlet cover (21), the outlet smoke tube (22) and the check valve (23) are arranged at an outlet of the range hood (1), one end of the outlet smoke tube (22) is connected with the air outlet cover (21), the other end of the outlet smoke tube is used for being connected with the public flue (3), the check valve (23) is used for being arranged at the joint of the outlet smoke tube (22) and the public flue (3), and the second detection unit (52) is arranged above the middle of the central line of the outlet smoke tube (22).
4. A monitoring method of a lampblack leakage monitoring device of a lampblack purification device as claimed in claim 2 or 3, characterized in that: the method comprises the following steps:
1) Starting a smoke monitoring function, and starting continuous monitoring by the first detection unit (51) and the second detection unit (52);
2) The controller (53) receives signals of the first detection unit (51) and the second detection unit (52), judges whether a lampblack signal is detected within unit time delta t, if yes, the step 3 is carried out, and if not, the indoor lampblack is not generated, and lampblack is not reversely flowed;
3) In a time interval delta t', the two sensors of the first detection unit (51) respectively monitor the increase of the feedback signals as delta Y1 and delta X1, and the two sensors of the second detection unit (52) respectively monitor the increase of the feedback signals as delta Y2 and delta X2; feedback signals of the first detection unit (51) and the second detection unit (52) are transmitted to a controller (53);
4) the controller (53) calculates the increment of feedback signals of the same type of sensors in the first detection unit (51) and the second detection unit (52) in a time interval delta t ', wherein delta X ' is delta X2-delta X1, and delta Y ' is delta Y2-delta Y1, judges whether the delta X ' and the delta Y ' are both in corresponding preset ranges, returns to the step 3 if both or one of the ranges is yes, detects again, and judges that the oil smoke leakage exists in the outlet flue (2) if both are not.
5. The monitoring method according to claim 4, wherein: in the step 4), the preset range is set to be that under the condition that the range hood (1) works and no oil smoke leakage of the outlet flue (2) is determined, the first detection unit (51) outputs increase amounts delta Y1 ' and delta X1 ' of feedback signals of the two sensors in a time interval delta t ' according to the continuously flowing smoke; the second detection unit (52) outputs the increment amounts DeltaY 2 'and DeltaX 2' of the feedback signals of the two sensors in the time interval Deltat according to the smoke continuously flowing through, and the controller (53) records the change ranges [ a and b ] of DeltaX ″ -DeltaX 2 '-DeltaX 1' as the preset range of one sensor type and the change ranges [ c and d ] of DeltaY 1 ″ -DeltaY 2 '-DeltaY 1' as the preset range of the other sensor type after a period of time.
6. the monitoring method according to claim 4, wherein: the monitoring device also comprises a prompting component (11) arranged on the range hood (1), and in the step 4), if the detection is carried out again in the step 3, the prompting component (54) outputs a first indicating signal; if the oil smoke leakage is judged to exist in the outlet flue (2), the prompting component (54) outputs a second indicating signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910779008.5A CN110579317B (en) | 2019-08-22 | 2019-08-22 | Oil smoke leakage monitoring method of oil smoke purifying device |
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| CN201910779008.5A CN110579317B (en) | 2019-08-22 | 2019-08-22 | Oil smoke leakage monitoring method of oil smoke purifying device |
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