CN111006278B - Oil fume purification device and oil fume leakage monitoring method thereof - Google Patents
Oil fume purification device and oil fume leakage monitoring method thereof Download PDFInfo
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- CN111006278B CN111006278B CN202010006611.2A CN202010006611A CN111006278B CN 111006278 B CN111006278 B CN 111006278B CN 202010006611 A CN202010006611 A CN 202010006611A CN 111006278 B CN111006278 B CN 111006278B
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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
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- Combustion & Propulsion (AREA)
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Abstract
The invention discloses an oil fume purification device, which comprises an oil fume exhaust machine body and an outlet flue, wherein the outlet flue comprises an outlet flue pipe used for communicating the oil fume exhaust machine body with a common flue, and the oil fume purification device is characterized in that: the outlet flue further comprises an outlet flue pipe branch pipe, one end of the outlet flue pipe branch pipe is connected with the outlet flue pipe, the other end of the outlet flue pipe branch pipe is used for being connected with the public flue, the oil smoke purification device further comprises a monitoring device used for monitoring oil smoke leakage of the outlet flue, and the monitoring device comprises a pressure sensor and an oil smoke concentration sensor which are arranged in the outlet flue pipe branch pipe. Also discloses a lampblack leakage monitoring method of the lampblack purification device. Through setting up export tobacco pipe branch pipe, set up the sensor in export tobacco pipe branch pipe, the oil smoke is less to its interference, the reliability is higher, and the leakproofness is also better.
Description
Technical Field
The invention relates to an oil fume purification device and an oil fume leakage monitoring method of the oil fume purification 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. At present, most of range hoods have no monitoring function and can only be found manually, and then a new smoke pipe or a new 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.
In order to perform automatic monitoring and improve accuracy, the following common methods are also currently used: 1) the automatic pressure changing device is added in the main smoke pipe at the outlet of the range hood, so that the range hood has the function of reverse flow. The automatic voltage transformation device intelligently adjusts the operating parameters of the variable frequency motor to change the static pressure according to the resistance change of the air outlet, thereby ensuring good oil smoke backflow prevention effect; 2) a rotary fan is arranged in the main flue, and the fan drives a micro generator to generate current when oil smoke flows backward, so that whether the oil smoke flows backward is monitored; 3) a smoke concentration sensor is arranged in the range hood or in a main flue of an outlet smoke pipe, whether the ratio of the increment of a sensor feedback signal in a time interval to the time interval is larger than a preset value or not is judged, if yes, the oil smoke is judged to flow backwards, and the range hood is started or gears of the range hood are increased to discharge the smoke.
By adopting the mode, the sensor can be blocked, the reliability is not high, or the rotating fan accumulates oil, the reaction is slow, and the situation that the regular cleaning is needed occurs; the additional arrangement of the components can increase the resistance in the outlet pipeline and influence the smoke exhaust effect of the range hood; the problem that the damaged oil smoke leakage of the outlet flue can affect the oil smoke leakage is neglected by additionally arranging the components.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an oil smoke purification device, which can conveniently realize active monitoring of oil smoke leakage in an outlet flue, and has accurate monitoring result and less possibility of generating misjudgment.
The second technical problem to be solved by the invention is to provide a lampblack leakage monitoring method of the lampblack purification device.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides an oil smoke purifier, includes range hood body and export flue, the export flue is including being used for the export tobacco pipe with range hood body and public flue intercommunication, its characterized in that: the outlet flue further comprises an outlet flue pipe branch pipe, one end of the outlet flue pipe branch pipe is connected with the outlet flue pipe, the other end of the outlet flue pipe branch pipe is used for being connected with the public flue, the oil smoke purification device further comprises a monitoring device used for monitoring oil smoke leakage of the outlet flue, and the monitoring device comprises a pressure sensor and an oil smoke concentration sensor which are arranged in the outlet flue pipe branch pipe.
Preferably, one end of the outlet smoke pipe branch pipe is connected with the joint of the outlet smoke pipe and the range hood body.
Preferably, the outlet smoke pipe branch pipe is further provided with a first electromagnetic valve, and the outlet smoke pipe is further provided with a second electromagnetic valve.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the lampblack leakage monitoring method of the lampblack purification device is characterized by comprising the following steps: the method comprises the following steps:
1) starting a monitoring device, wherein the pressure sensor and the oil smoke concentration sensor start to monitor signals of corresponding positions;
2) judging whether the increment delta P1 of the feedback signal of the oil smoke concentration sensor is larger than a preset value or not in a first time interval delta t1, if so, entering the step 3), and if not, entering the step 7);
3) judging whether the increment delta P of the feedback signal of the pressure sensor is in a preset range of a corresponding gear of a fan of the range hood body in a second time interval delta t2, and if so, entering the step 4); if not, entering step 5);
4) judging whether the starting time of the range hood body is greater than a preset value, if so, sending a signal of backward flowing of the oil smoke to a user side personnel, and if not, judging that an outlet smoke pipe does not leak; finishing primary monitoring;
5) judging whether the increment delta P of the feedback signal of the pressure sensor is larger than the maximum value of the preset range of the corresponding gear of the fan of the range hood body in a second time interval delta t2, if so, sending a signal of oil smoke backflow to a user end person, and finishing primary monitoring; if not, entering step 6);
6) continuously judging whether the starting time of the range hood body is greater than a preset value, if so, sending a signal of oil smoke backflow to user side personnel, if not, sending a signal of outlet smoke pipe leakage to the user side personnel, and finishing primary monitoring; (ii) a
7) Judging whether the increment delta P of the feedback signal of the pressure sensor is in a preset range of a corresponding gear of a fan of the range hood body in a second time interval delta t2, and if so, judging that the outlet smoke tube does not leak; if not, sending a signal of leakage of the outlet smoke tube to a user side personnel, and finishing the monitoring at one time.
Preferably, in the step 2), under the condition that the outlet smoke tube does not leak and the range hood operates normally, the smoke concentration sensor continuously monitors the smoke concentration value in the outlet smoke tube branch tube, outputs a first feedback signal, and determines the first feedback signal as the preset value of the smoke concentration.
Preferably, in the step 3), under the condition that the outlet smoke tube does not leak and the range hood operates normally, the pressure sensor continuously monitors the pressure value in the outlet smoke tube branch tube, and the range of the second feedback signal is output according to different gear records of the fan of the range hood body and is set as the preset range.
Preferably, in order to discharge the backward flowing oil smoke, in step 4), if yes, the first solenoid valve on the outlet smoke pipe branch pipe is opened, and the second solenoid valve on the outlet smoke pipe is closed.
Preferably, in order to discharge the backward flowing oil smoke, in the step 5), if yes, the first electromagnetic valve is opened, and the second electromagnetic valve is closed.
Preferably, in order to discharge the backward flowing oil smoke or the leaked oil smoke, the first electromagnetic valve is opened and the second electromagnetic valve is closed after the judgment in the step 6).
Preferably, in step 7), if not, the first solenoid valve is opened and the second solenoid valve is closed to discharge the leaked oil smoke.
Compared with the prior art, the invention has the advantages that: through setting up export tobacco pipe branch pipe, set up the sensor in export tobacco pipe branch pipe, the oil smoke is less to its interference, the reliability is higher, and the leakproofness is also better.
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
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1, an oil smoke purification device comprises an oil smoke exhaust ventilator body 1 and an outlet flue 2, wherein the oil smoke exhaust ventilator body 1 is of a common structure and comprises a smoke collecting hood, a fan frame, a fan arranged in the fan frame and the like. The outlet flue 2 comprises an outlet flue tube 21 (main tube) and a check valve 22, one end of the outlet flue tube 21 is connected with the air outlet of the range hood body 1, the other end of the outlet flue tube 21 is connected with the common flue 100, and the check valve 22 is arranged at the connection position of the outlet flue tube 21 and the common flue 100. The above structure may be the same as the prior art and will not be described herein.
The outlet flue 2 also comprises an outlet flue pipe branch pipe 23, one end of the outlet flue pipe branch pipe 23 is connected with the joint of the outlet flue pipe 21 and the range hood body 1, the other end is connected with the common flue 100, the joint of the outlet flue pipe branch pipe 23 and the common flue 100 is provided with a one-way valve 24, and the one-way valve 24 and the check valve 22 of the outlet flue pipe 21 have the same function and are all used as fireproof check valves. An auxiliary fan may also be provided in the outlet pipe branch 23 to prevent backflow.
The oil smoke purifier also comprises a monitoring device for monitoring whether the oil smoke leakage exists in the outlet flue 2, if the monitoring device is directly installed in a main pipeline (outlet smoke pipe 21) of the outlet flue 2, the oil smoke interference is large, the reliability is low, and the requirement on the pipeline tightness is high due to high wind speed and high static pressure in the main pipeline. Therefore, the monitoring device is arranged in the outlet smoke pipe branch pipe 23 by arranging the outlet smoke pipe branch pipe 23, so that the interference of the oil smoke on the monitoring device is less, the reliability is higher, and the sealing performance is better. The monitoring device comprises a pressure sensor 31 and a lampblack concentration sensor 32 which are arranged in the outlet smoke pipe branch pipe 23. The pressure sensor 31 is configured to detect the pressure in the outlet pipe branch 23, and may be a differential pressure gauge, an elastic pressure gauge, or the like, but is not limited to the above type. The outlet smoke pipe branch pipe 23 and the outlet smoke pipe 21 are made of the same material, the radius is smaller than that of the outlet smoke pipe 21 (larger than 50-100 mm), aluminum foil paper can be used for pasting connection, and pasting is carried out at the joint of the two pipelines. The pressure sensor 31 and the soot concentration sensor 32 are directly installed in the outlet smoke pipe branch 23, such as on the sidewall of the outlet smoke pipe branch 23, preferably at a position 60mm away from the junction of the outlet smoke pipe branch 23 and the outlet smoke pipe 21.
The monitoring device further includes a first solenoid valve 33 provided on the outlet smoke pipe branch pipe 23 and a second solenoid valve 34 provided on the outlet smoke pipe 21, the first solenoid valve 33 being provided downstream of the pressure sensor 31 and the smoke concentration sensor 32 on the smoke flow path. The first solenoid valve 33 is preferably mounted 120mm from the connection of the outlet pipe branch 23 and the outlet pipe 21. The second electromagnetic valve 34 can be disposed at the connection between the outlet smoke pipe 21 and the range hood body 1.
The pressure sensor 31, the soot concentration sensor 32, the first electromagnetic valve 33 and the second electromagnetic valve 34 are all connected to a controller 11, preferably, the controller 11 is an existing main controller 11 of the range hood body 1, and of course, the controller 11 may also be separately provided. The controller 11 is configured to perform corresponding judgment and action when the detected signals fed back by the pressure sensor 31 and the soot concentration sensor 32 are in the preset range.
According to the monitoring device with the requirements, a user can select to turn on or off the range hood, so that the operating mode of the range hood can be selected more flexibly.
As shown in fig. 2, the monitoring method of the monitoring device of the lampblack purification device comprises the following steps:
1) starting the monitoring device, and the pressure sensor 31 and the oil smoke concentration sensor 32 start to monitor signals of corresponding positions and feed back the signals to the controller 11; at this time, the first electromagnetic valve 33 is closed, and the second electromagnetic valve 34 is opened;
2) the controller 11 judges whether the increment delta P1 of the feedback signal of the oil smoke concentration sensor 32 is larger than a preset value in a first time interval delta t1, if so, the indoor oil smoke is generated or the oil smoke flows backwards, the step 3 is carried out, and if not, the step 7 is carried out); in this step, the preset value of the oil smoke concentration can be set by the following manner, under the condition that the outlet smoke tube 21 does not leak and the range hood operates normally, the oil smoke concentration sensor 32 continuously monitors the oil smoke concentration value in the outlet smoke tube branch tube 23, outputs a first feedback signal X1 at the same time, and determines the value as the preset value; optionally, the preset value can also be set by the user;
3) the controller 11 judges whether the increment delta P of the feedback signal of the pressure sensor 31 is within the preset range of the corresponding gear of the fan of the range hood body 1 in the second time interval delta t2, if so, the step 4 is carried out; if not, judging that the maximum value is larger than the maximum value or smaller than the minimum value, and entering the step 5); in this step, the preset range of the pressure therein may be set in such a way that, under the condition that the outlet smoke tube 21 does not leak and the range hood operates normally, the pressure sensor 31 continuously monitors the pressure value in the outlet smoke tube branch tube 23, and outputs the range of the second feedback signal Y1 at the same time according to different gear records, which is defined as the preset range [ a, b ]; optionally, the range may be set by the user;
4) continuously judging whether the starting-up time of the range hood body 1 is greater than a preset value, judging whether the detected state is the time when the range hood body 1 is stabilized within or outside the preset time from starting up, if so, namely, the starting-up time is judged to be greater than the preset value, opening a first electromagnetic valve 33 on the outlet smoke pipe branch pipe 21, closing a second electromagnetic valve 34 on the outlet smoke pipe 21, enabling airflow to enter the public flue 100 from the outlet smoke pipe branch pipe 23, then sending a signal of backward flowing of the lampblack to a user or corresponding maintenance personnel (or other user side personnel), and if not, namely, the starting-up time is judged to be not greater than the preset value, judging that the outlet smoke pipe 21 does not leak; finishing primary monitoring;
5) the controller 11 judges whether the increment delta P of the feedback signal of the pressure sensor 31 is larger than the maximum value of the preset range of the corresponding gear of the fan of the range hood body 1 in the second time interval delta t2, if so, the first electromagnetic valve 33 is opened, the second electromagnetic valve 34 is closed, the signal of the oil smoke backflow is sent to a user or corresponding maintenance personnel (or other user side personnel), and the primary monitoring is finished; if not, entering step 6);
6) continuously judging whether the starting time of the range hood body 1 is greater than a preset value, judging whether the detected state is the time when the range hood body 1 is stable within or outside the preset time from starting, if so, opening the first electromagnetic valve 33, closing the second electromagnetic valve 34, sending a signal of oil smoke backflow to a user or corresponding maintenance personnel (or other user side personnel), and finishing primary monitoring; if not, opening the first electromagnetic valve 33, closing the second electromagnetic valve 34, sending a signal of leakage of the outlet smoke tube 21 to a user or corresponding maintenance personnel (or other user side personnel), and finishing the monitoring for one time;
7) because the indoor generated oil smoke or the oil smoke in the common flue flows backward and enters the outlet smoke pipe branch pipe 23, the increment delta P1 of the feedback signal of the oil smoke concentration sensor 32 in the first time interval delta t1 is larger than a preset value, if the judgment is negative, the situation that no oil smoke is generated and no oil smoke flows backward is shown, then, whether the increment delta P of the feedback signal of the pressure sensor 31 is in the preset range of the corresponding gear of the fan of the range hood body 1 in the second time interval delta t2 is judged, if the increment delta P is positive, the outlet smoke pipe 21 does not leak is judged, the signal that the outlet smoke pipe 21 does not leak is sent to a user or corresponding maintenance personnel (or other user side personnel), and the primary monitoring is finished; if not, the preset pressure is not reached, and a pressure relief condition appears, which indicates that the outlet smoke pipe 21 leaks, the first electromagnetic valve 33 in the outlet smoke pipe branch pipe 23 is opened, the second electromagnetic valve 34 on the outlet smoke pipe 21 is closed, and then a signal of the leakage of the outlet smoke pipe 21 is sent to the user or corresponding maintenance personnel (or other user side personnel); and finishing one monitoring.
The first time interval Δ t1 and the second time interval Δ t2 may be set by the user, and may be the same or different. In the above steps, the judgment and comparison with the preset value and the preset range can be performed for many times, and when a certain number of times (fault-tolerant times) is reached, the judgment result is output to avoid the misjudgment.
Whether the outlet flue is subjected to smoke leakage or not is judged through a sensor arranged outside the outlet flue, and the backward flowing of the oil smoke from the public flue or the indoor flowing of the oil smoke is distinguished through the difference value of the sensors of the oil smoke machine arranged inside the oil smoke machine and in the outlet smoke pipe at the same moment. The key protection of the invention is the detection and control method for the oil smoke backflow and the smoke leakage of the outlet flue of the flue system.
Claims (8)
1. The utility model provides a lampblack leakage monitoring method of lampblack purification device, the lampblack purification device comprises a range hood body (1) and an outlet flue (2), the outlet flue (2) comprises an outlet flue pipe (21) for communicating the range hood body (1) with a common flue (100), and the lampblack purification device is characterized in that: the outlet flue (2) further comprises an outlet flue pipe branch pipe (23), one end of the outlet flue pipe branch pipe (23) is connected with the outlet flue pipe (21), the other end of the outlet flue pipe branch pipe (23) is used for being connected with the public flue (100), the lampblack purification device further comprises a monitoring device for monitoring lampblack leakage of the outlet flue (2), the monitoring device comprises a pressure sensor (31) and a lampblack concentration sensor (32) which are arranged in the outlet flue pipe branch pipe (23), a first electromagnetic valve (33) is further arranged on the outlet flue pipe branch pipe (23), a second electromagnetic valve (34) is further arranged on the outlet flue pipe (21), and the monitoring method comprises the following steps:
1) starting a monitoring device, wherein the pressure sensor (31) and the oil smoke concentration sensor (32) start to monitor signals of corresponding positions; at the moment, the first electromagnetic valve (33) is closed, and the second electromagnetic valve (34) is opened;
2) judging whether the increment delta P1 of the feedback signal of the lampblack concentration sensor (32) is larger than a preset value or not in a first time interval delta t1, if so, entering the step 3), and if not, entering the step 7);
3) judging whether the increment delta P of the feedback signal of the pressure sensor (31) is within a preset range of a corresponding gear of a fan of the range hood body (1) or not in a second time interval delta t2, and if so, entering the step 4); if not, entering step 5);
4) judging whether the starting time of the range hood body (1) is greater than a preset value, if so, sending a signal of oil smoke backflow to user side personnel, and if not, judging that the outlet smoke tube (21) does not leak; finishing primary monitoring;
5) judging whether the increment delta P of the feedback signal of the pressure sensor (31) is larger than the maximum value of the preset range of the corresponding gear of the fan of the range hood body (1) in a second time interval delta t2 again, if so, sending a signal of oil smoke backflow to a user end person, and finishing the primary monitoring; if not, entering step 6);
6) continuously judging whether the starting time of the range hood body (1) is greater than a preset value, if so, sending a signal of oil smoke backflow to user side personnel, and if not, sending a signal of leakage of an outlet smoke pipe (21) to the user side personnel, and finishing primary monitoring;
7) judging whether the increment delta P of the feedback signal of the pressure sensor (31) is within a preset range of a corresponding gear of a fan of the range hood body (1) or not in a second time interval delta t2, and if so, judging that the outlet smoke tube (21) does not leak; if not, sending a signal of leakage of the outlet smoke pipe (21) to a user side person; and finishing one monitoring.
2. The lampblack leakage monitoring method of a lampblack purification device according to claim 1, characterized in that: in the step 2), under the condition that the outlet smoke tube (21) does not leak and the range hood operates normally, the oil smoke concentration sensor (32) continuously monitors the oil smoke concentration value in the outlet smoke tube branch tube (23), outputs a first feedback signal (X1) and determines the first feedback signal as the preset value of the oil smoke concentration.
3. The lampblack leakage monitoring method of a lampblack purification device according to claim 1, characterized in that: in the step 3), under the condition that the outlet smoke tube (21) does not leak and the range hood operates normally, the pressure sensor (31) continuously monitors the pressure value in the outlet smoke tube branch tube (23), and the range of the second feedback signal (Y1) is output according to different gear records of the fan of the range hood body (1) and is set as the preset range.
4. The lampblack leakage monitoring method of a lampblack purification device according to claim 1, characterized in that: in the step 4), if yes, a first electromagnetic valve (33) on the outlet smoke pipe branch pipe (21) is opened, and a second electromagnetic valve (34) on the outlet smoke pipe (21) is closed.
5. The lampblack leakage monitoring method of a lampblack purification device according to claim 1, characterized in that: in step 5), if yes, the first electromagnetic valve (33) is opened, and the second electromagnetic valve (34) is closed.
6. The lampblack leakage monitoring method of a lampblack purification device according to claim 1, characterized in that: in step 6), the first electromagnetic valve (33) is opened and the second electromagnetic valve (34) is closed after the judgment.
7. The lampblack leakage monitoring method of a lampblack purification device according to claim 1, characterized in that: in step 7), if not, the first solenoid valve (33) is opened and the second solenoid valve (34) is closed.
8. The lampblack leakage monitoring method of the lampblack purification device according to any one of claims 1 to 7, characterized in that: one end of the outlet smoke pipe branch pipe (23) is connected with the joint of the outlet smoke pipe (21) and the range hood body (1).
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| CN207263705U (en) * | 2017-09-27 | 2018-04-20 | 成都珂睿科技有限公司 | A kind of high pressure flow type pressure sensor |
| CN209308110U (en) * | 2018-12-06 | 2019-08-27 | 鱼路焕 | High-building construction fire-fighting watering equipment |
| CN110579317A (en) * | 2019-08-22 | 2019-12-17 | 宁波方太厨具有限公司 | Oil smoke leakage monitoring device and monitoring method of oil smoke purifying device |
| CN110594809A (en) * | 2019-08-22 | 2019-12-20 | 宁波方太厨具有限公司 | Device and method for monitoring backflow and leakage of lampblack purification device |
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