CN113108348A - Range hood and cleaning control method thereof - Google Patents
Range hood and cleaning control method thereof Download PDFInfo
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- CN113108348A CN113108348A CN202110488866.1A CN202110488866A CN113108348A CN 113108348 A CN113108348 A CN 113108348A CN 202110488866 A CN202110488866 A CN 202110488866A CN 113108348 A CN113108348 A CN 113108348A
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- cleaning
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
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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
- F24C15/2035—Arrangement or mounting of filters
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to a range hood and a cleaning control method thereof, wherein the range hood comprises the following components: the oil-water collecting unit comprises a first liquid storage tank and is used for collecting oil-water mixed liquid flowing down from the range hood; the first turbidity sensor is used for detecting the turbidity of the oil-water mixed liquid in the first liquid storage tank; the controller is in electrical signal connection with the first turbidity sensor and is used for acquiring and recording turbidity information of the oil-water mixed liquid in the first liquid storage tank and accumulated running time information of the range hood, and controlling the start of a cleaning program of the range hood when the accumulated running time reaches or exceeds a preset accumulated running time threshold value and when the turbidity of the oil-water mixed liquid reaches a preset turbidity threshold value. By combining the accumulated running time information and the turbidity information, the oil stain condition on the corresponding parts in the range hood can be more accurately reflected, so that whether the range hood needs to be cleaned or not can be accurately judged, and the problem that the oil stain accumulation is excessive due to missing of the optimal cleaning opportunity is avoided.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a range hood and a cleaning control method of the range hood.
Background
The range hood is a kitchen appliance for purifying the kitchen environment. In the long-term use process, oil stains are accumulated in the range hood and in parts (such as an impeller, a volute and the like), and when the oil stains are accumulated in a large amount, the performance of oil smoke absorption is affected, so that the oil stains on the range hood and the parts need to be cleaned in time. Most of range hoods adopt automatic cleaning and oil removing methods such as steam cleaning and heating, a water pump pumps liquid in a liquid storage container to heat in a steam generator, and then the liquid heated to a certain temperature is directly sprayed onto parts needing to be cleaned. However, because the volume of the container for containing water or cleaning liquid is limited, the cleaning effect is limited by the volume of the liquid in the container, most parts are not cleaned, the water or cleaning liquid is consumed, the action time of the cleaning liquid is short, grease on the surfaces of the parts cannot be completely decomposed, and the ideal cleaning effect cannot be achieved.
For this reason, chinese utility model patent with application number CN201721448982.6 (No. CN207438678U) discloses "a range hood's cleaning circulation device and range hood", is equipped with the drain in the range hood, and range hood's cleaning circulation device includes: the liquid storage container is provided with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe is connected with a sewage discharge outlet; the heating cavity is arranged in the range hood to heat liquid flowing out of the liquid storage container; the spray arm is arranged in the range hood and is connected with the heating cavity, and the spray arm is used for spraying the heated liquid to the part of the range hood needing to be cleaned; the water pump is connected between the liquid outlet pipe and the heating cavity, and a filtering device is arranged at the upstream of the water pump. This range hood forms the circulation system of a washing liquid through stock solution container, heating chamber, spray arm and water pump cooperation, and it can avoid receiving the restriction of liquid volume in the cleaning process to can promote the cleaning efficiency, and, be equipped with filter equipment in the upper reaches of water pump, can prevent in the impurity entering water pump or other spare parts in the liquid.
However, the range hood in the above patent still has certain deficiencies in the actual use process, and firstly, the existing range hood basically determines whether to start the cleaning program according to the effective running time of the range hood, and because the cooking habits of users are different, the oil stain accumulated on each part in the range hood is different in certain service time of the range hood, for example, if the cooking operation is more, the oil stain amount is relatively less, and if the stir-frying cooking operation is more, the oil stain amount is relatively more, and the situation that the range hood continuously runs without actual cooking operation exists, therefore, if the unreasonable situation exists in the cleaning program for starting the range hood only according to whether the range hood reaches the effective operation time, the problem that the oil stain accumulation is too much due to missing the optimal cleaning time of the range hood is difficult to avoid. Secondly, the cleaning process of the cleaning circulation device in the above patent is generally performed according to a fixed cleaning time or a fixed cleaning frequency, and it cannot perform targeted cleaning according to the oil stain amount of each component in the range hood, so that there is a problem that unnecessary circulation cleaning is additionally performed for many times or the cleaning frequency is insufficient, which results in insufficient cleaning effect.
The above-mentioned technical scheme for judging whether to start the cleaning program according to the effective operation duration of the range hood is disclosed in the patent document: 1. a control method and a control system for reminding automatic cleaning of a range hood, which are disclosed in application number CN 201811203183.1; and 2, a control method for cleaning the range hood, which is disclosed by the application number CN 201910550333.4.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a range hood which can accurately judge the time for starting a cleaning program of the range hood aiming at the current situation of the prior art, thereby avoiding the problem of excessive accumulation of oil stains caused by missing the optimal cleaning time.
The second technical problem to be solved by the present invention is to provide a cleaning control method for a range hood, aiming at the current situation of the prior art.
The third technical problem to be solved by the invention is to provide a cleaning control method of a range hood, which can carry out targeted cleaning operation according to the oil stain condition of each component in the range hood, aiming at the current situation of the prior art, so as to avoid the problem of insufficient cleaning effect caused by insufficient cleaning times or the problem of additionally carrying out unnecessary repeated circulating cleaning.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a range hood, comprising:
the oil-water collecting unit comprises a first liquid storage tank, and the first liquid storage tank is used for collecting oil-water mixed liquid flowing down from the range hood;
the first turbidity sensor is used for detecting the turbidity of the oil-water mixed liquid in the first liquid storage tank;
and the controller is in electrical signal connection with the first turbidity sensor and is used for acquiring and recording the turbidity information of the oil-water mixed liquid in the first liquid storage tank and the accumulated running time information of the range hood and controlling the start of a cleaning program of the range hood when the accumulated running time of the range hood reaches or exceeds a preset accumulated running time threshold value and the turbidity of the oil-water mixed liquid in the first liquid storage tank reaches a preset turbidity threshold value.
In order to realize the recycling of the cleaning liquid of the range hood, the range hood further comprises:
the filtering unit is connected with the first liquid storage tank and is used for filtering the oil-water mixed liquid in the first liquid storage tank;
the first pump is arranged between the first liquid storage tank and the filtering unit and used for pumping the oil-water mixed liquid in the first liquid storage tank to the filtering unit, and the first pump is in electric signal connection with the controller and is controlled to be started or closed by the controller;
the cleaning liquid storage unit comprises a second liquid storage tank, and the second liquid storage tank is connected with the filtering unit and is used for storing the cleaning liquid obtained after being filtered by the filtering unit;
the washing unit comprises an ejector, the ejector is connected with the second liquid storage tank and is used for spraying the cleaning liquid in the second liquid storage tank onto a part to be cleaned in the range hood;
the second pump is arranged between the second liquid storage tank and the ejector and used for pumping the cleaning liquid in the second liquid storage tank to the ejector, and the controller is in electric signal connection with the second pump and is controlled to be started or closed by the controller.
Because the turbidity of the oil-water mixed liquid is different, the filtering units are different in hydraulic pressure required for achieving the optimal filtering effect correspondingly, in order to achieve the optimal purifying effect, the turbidity of the filtered cleaning liquid is effectively reduced, so that the cleaning effect of corresponding parts in the range hood is ensured, and the controller controls the pumping pressure of the first pump through the received output signal of the first turbidity sensor.
Because the jet velocity of the sprayer of the flushing unit is different, the impact force of the greasy dirt on the corresponding part in the range hood is different, the cleaning effect is different, and because the turbidity value of the cleaning liquid is different, the dissolving capacity of the greasy dirt is also different, therefore, in order to make the jet velocity of the sprayer of the flushing unit better match with the turbidity value of the cleaning liquid, the range hood further comprises:
and the second turbidity sensor is used for detecting the turbidity of the cleaning liquid in the second liquid storage tank and is in electric signal connection with the controller, and the controller controls the pumping pressure of the second pump through the received output signal of the second turbidity sensor.
In order to make the turbidity value of the oil-water mixed liquid in the first liquid storage tank obtained by the first turbidity sensor more accurately reflect the oil pollution amount on the part to be cleaned of the range hood, and then accurately judge the opportunity for starting the cleaning program of the range hood, the range hood further comprises:
the first liquid level sensor is used for detecting the liquid level of oil-water mixed liquid in the first liquid storage tank, and the controller is in electric signal connection with the first liquid level sensor.
Therefore, the controller can control the cleaning program of the range hood to start when the accumulated operation time of the range hood reaches or exceeds a preset accumulated operation time threshold value, and the liquid level of the oil-water mixed liquid in the first liquid storage tank reaches a preset liquid level interval and the turbidity of the oil-water mixed liquid in the first liquid storage tank reaches a preset turbidity threshold value.
As an improvement, the range hood further comprises a second liquid level sensor for detecting the liquid level of the oil-water mixed liquid in the second liquid storage tank, the controller is in electrical signal connection with the second liquid level sensor to control the first pump to be closed and the second pump to be started when the liquid level of the oil-water mixed liquid in the second liquid storage tank reaches a third set liquid level, and to control the second pump to be closed when the liquid level of the oil-water mixed liquid in the second liquid storage tank is lower than a fourth set liquid level. Above-mentioned structural design can make required washing liquid realize stable cycle in the cleaning process to, the quantity of washing liquid that washing operation jetted at every turn among the above-mentioned intermittent type formula circulation cleaning process is basically fixed, from this, the volume that flows into in first receiver tank after the washing also basically is fixed, can not have great change, and correspondingly, the turbidity detected value in first receiver tank is also more accurate.
In order to further improve the dissolving capacity of the cleaning liquid to the oil stains, the cleaning liquid cleaning device further comprises a heating system arranged between the second liquid storage tank and the second pump, and the heating system is used for heating the cleaning liquid in the second liquid storage tank.
As an improvement, the part to be cleaned in the range hood comprises at least one of a volute and an impeller. In the operation process of the range hood, most of oil can be kept in the volute and the impeller, the dynamic balance instability of the impeller can be caused by the accumulation of oil in the day and the month, the air channel change of the surface of the volute is caused by the accumulated oil, and then the problems of the rotating speed reduction of the impeller of the range hood, the resonance of the whole machine, the noise increase and the like are caused, so that the components such as the volute and the impeller of the range hood need to be cleaned in time.
The technical scheme adopted by the invention for solving the second technical problem is as follows: a cleaning control method of a range hood comprises the following steps:
s1, stopping the operation of the range hood;
s2 obtaining the accumulation of the range hoodThe running time t is judged, and whether the accumulated running time t of the range hood reaches or exceeds a preset accumulated running time threshold t is judgedmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
and S4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again.
In order to make the turbidity detection of the oil-water mixture in the first liquid storage tank more accurate, the range hood further comprises:
the first liquid level sensor is used for detecting the liquid level of oil-water mixed liquid in the first liquid storage tank, and the controller is in electrical signal connection with the first liquid level sensor;
the method for controlling the cleaning of the range hood further comprises the following steps after the step S2 and before the step S3:
s21, acquiring the liquid level information of the oil-water mixed liquid in the first liquid storage tank, judging whether the liquid level of the oil-water mixed liquid in the first liquid storage tank is within a preset liquid level interval, if so, entering the step S3, and if not, repeating the step S21;
in order to accurately and timely start a cleaning program and ensure the stability of the supply of cleaning liquid in the cleaning process after the cleaning program is started, the cleaning control method of the range hood comprises the following steps:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank0Judging the current oil-water mixtureHaze value A of0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
s4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again;
s5, starting a first pump, pumping the oil-water mixed liquid in the first liquid storage tank to the filtering unit, filtering by the filtering unit to obtain a cleaning liquid, storing the cleaning liquid into a second liquid storage tank, acquiring liquid level information of the cleaning liquid in the second liquid storage tank through a second liquid level sensor, and closing the first pump when the liquid level in the second liquid storage tank reaches a third set liquid level so as to store a certain amount of cleaning liquid in the second liquid storage tank;
and S6, starting a second pump, pumping the cleaning liquid in the second liquid storage tank to the ejector, ejecting the cleaning liquid to the part to be cleaned in the range hood through the ejector, re-flowing the cleaned oil-water mixed liquid to the first liquid storage tank, and closing the second pump to finish a cleaning process and record the continuous cleaning times in the cleaning program when the liquid level in the second liquid storage tank is lower than a fourth set liquid level.
The cleaning control method can realize intermittent spraying operation of the whole cleaning program, and each spraying process of the ejector can spray quantitative cleaning liquid to the parts to be cleaned in the range hood, thereby ensuring the stability of the supply of the cleaning liquid in the cleaning process.
The technical scheme adopted by the invention for solving the third technical problem is as follows:
the following steps are also included after step S6:
s7, detecting the turbidity of the oil-water mixed liquid received in the first liquid storage tank after the current nth cleaning process is finished through the first turbidity sensor, and acquiring a turbidity value An；
S8, judging whether the cleaning process is the first cleaning, if so, going to step S9, and if not, going to step S10;
s9, obtaining the turbidity value A currently1With the initially taken oil in the first tankComparing the turbidity value A0 of the water mixed solution to obtain the turbidity change value delta A of the oil-water mixed solution after the cleaning process1Wherein, Δ A1＝A1-A0N is the number of cleaning operations which are continued after the start of the cleaning program, and then, the determination of Delta A1Whether the turbidity change is less than or equal to a preset turbidity change threshold value A, if so, the step S11 is carried out, if not, the step S5 is returned, and the next cleaning is continued;
s10, obtaining the turbidity value A currentlynObtaining turbidity value A after finishing the last cleaning processn-1Obtaining the turbidity change value delta A of the oil-water mixed liquid after the cleaning processnWherein, Δ An＝An-An-1N is the number of washes continued after the cleaning sequence is initiated, n is 2, 3 … …, and then Δ a is determinednWhether the turbidity change is less than or equal to a preset turbidity change threshold value A, if so, entering a step S11, continuing to perform next cleaning, otherwise, returning to the step S5, and continuing to perform next cleaning;
and S11, finishing the cleaning program.
In order to make the filtering unit achieve the best purifying effect and effectively reduce the turbidity of the filtered cleaning solution, thereby ensuring the cleaning effect on the corresponding components in the range hood, the step S5 further comprises the following steps:
s51, the controller obtains the initial turbidity value A of the oil-water mixed liquid in the first liquid storage tank according to the first turbidity sensor0Or the turbidity value A of the oil-water mixed liquid received in the first liquid storage tank and obtained after the nth cleaning process is finishednControlling the first pump at a turbidity value A0Or turbidity value AnMatched pumping pressure.
In order to better match the spraying speed of an injector of a washing unit with the turbidity value of cleaning liquid so as to achieve stable cleaning effect, the cleaning control method of the range hood comprises the following steps:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging the accumulated operation time t of the range hoodWhether the time t reaches or exceeds a preset accumulated running time threshold tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
s4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again;
s5, starting a first pump, pumping the oil-water mixed liquid in the first liquid storage tank to the filtering unit, filtering by the filtering unit to obtain a cleaning liquid, storing the cleaning liquid into a second liquid storage tank, acquiring liquid level information of the cleaning liquid in the second liquid storage tank through a second liquid level sensor, and closing the first pump when the liquid level in the second liquid storage tank reaches a third set liquid level so as to store a certain amount of cleaning liquid in the second liquid storage tank;
s6, starting a second pump, pumping the cleaning liquid in the second liquid storage tank to the ejector, ejecting the cleaning liquid to the part to be cleaned in the range hood through the ejector, re-flowing the cleaned oil-water mixed liquid to the first liquid storage tank, and closing the second pump to finish a cleaning process and record the continuous cleaning times in the cleaning program when the liquid level in the second liquid storage tank is lower than a fourth set liquid level;
the step S6 further includes the steps of:
s61, detecting the turbidity of the cleaning liquid in the second liquid storage tank before the current nth cleaning process starts through the second turbidity sensor, and acquiring a turbidity value BnThe controller controls the second pump to be at a turbidity value B according to the received output signal of the second turbidity sensornMatched pumping pressure.
In order to effectively remove oil stains on the impeller, the cleaning control method of the range hood comprises the following steps:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
s4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again;
s5, starting a first pump, pumping the oil-water mixed liquid in the first liquid storage tank to the filtering unit, filtering by the filtering unit to obtain a cleaning liquid, storing the cleaning liquid into a second liquid storage tank, acquiring liquid level information of the cleaning liquid in the second liquid storage tank through a second liquid level sensor, and closing the first pump when the liquid level in the second liquid storage tank reaches a third set liquid level so as to store a certain amount of cleaning liquid in the second liquid storage tank;
s6, starting a second pump, pumping the cleaning liquid in the second liquid storage tank to the ejector, ejecting the cleaning liquid to an impeller in the range hood through the ejector, re-flowing the cleaned oil-water mixed liquid into the first liquid storage tank, and closing the second pump to finish a cleaning process and record the continuous cleaning times in the cleaning process when the liquid level in the second liquid storage tank is lower than a fourth set liquid level;
the step S6 further includes the steps of:
s61, detecting the turbidity of the cleaning liquid in the second liquid storage tank before the current nth cleaning process starts through the second turbidity sensor, and acquiring a turbidity value BnThe controller controls the second pump to be at a turbidity value B according to the received output signal of the second turbidity sensornMatched pumping pressures;
s62, controlling the impeller of the range hood and the turbidity by the controller according to the received output signal of the second turbidity sensorValue BnThe matched speed is used for forward and reverse rotation.
In order to further improve the decontamination effect of the cleaning liquid, the cleaning control method of the range hood comprises the following steps:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
s4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again;
s5, starting a first pump, pumping the oil-water mixed liquid in the first liquid storage tank to the filtering unit, filtering by the filtering unit to obtain a cleaning liquid, storing the cleaning liquid into a second liquid storage tank, acquiring liquid level information of the cleaning liquid in the second liquid storage tank through a second liquid level sensor, and closing the first pump when the liquid level in the second liquid storage tank reaches a third set liquid level so as to store a certain amount of cleaning liquid in the second liquid storage tank;
s6, starting a heating system for heating the cleaning liquid in the second liquid storage tank, starting a second pump after the cleaning liquid reaches a set temperature, pumping the heated cleaning liquid to the ejector through the second pump, ejecting the cleaning liquid to a part to be cleaned in the range hood through the ejector, enabling the cleaned oil-water mixed liquid to flow into the first liquid storage tank again, and closing the second pump when the liquid level in the second liquid storage tank is lower than a fourth set liquid level to finish a cleaning process and record the continuous cleaning times in the cleaning process;
compared with the prior art, the invention has the advantages that: the invention obtains the turbidity information of the oil-water mixed liquid in the first liquid storage tank through the first turbidity sensor on the basis that the accumulated running time of the range hood reaches or exceeds the preset accumulated running time threshold value, when the turbidity of the oil-water mixed liquid in the first liquid storage tank also reaches a preset turbidity threshold value, the cleaning program of the range hood is finally controlled to start, therefore, the turbidity information judgment condition of the oil-water mixed liquid in the first liquid storage tank is added, the defect that whether the cleaning program is started or not can be judged only through the accumulated running time of the range hood in the prior art can be corrected, the oil stain condition on the corresponding parts in the range hood can be more accurately reflected through the combination of the accumulated running time and the turbidity information of the range hood, therefore, whether the range hood needs to be cleaned or not can be accurately judged, and the problem that oil stains are accumulated too much due to missing of the best cleaning time is avoided.
Drawings
Fig. 1 is a front view of a range hood according to an embodiment of the present invention (the front side plate and the oil guide plate of the casing are omitted);
FIG. 2 is a schematic diagram of a cleaning process of the range hood according to the embodiment of the present invention;
fig. 3 is a control flow chart of a cleaning process of the range hood according to the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
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. 1-3, a range hood includes a housing 80, a fan system 81 disposed in the housing 80, and a cleaning cycle device. In the long-term use process, the inside of the range hood and the parts (such as the impeller 83 and the volute 82 of the fan system 81) have oil stains accumulated, and when the oil stains are accumulated in a large amount, the performance of absorbing the oil smoke is affected, so that the oil stains and the parts inside the range hood need to be cleaned in time by the cleaning and circulating device.
The cleaning circulation device is disposed inside the casing 80, and specifically includes an oil-water collecting unit, a first liquid level sensor 12, a first turbidity sensor 11, a first pump 21, a filtering unit 30, a cleaning liquid storage unit, a second liquid level sensor 42, a second turbidity sensor 41, a heating system 51, a second pump 61, a flushing unit and a controller (not shown), wherein the first liquid level sensor 12, the first turbidity sensor 11, the first pump 21, the second liquid level sensor 42, the second turbidity sensor 41, the heating system 51 and the second pump 61 are all electrically connected to the controller.
Referring to fig. 1, the oil-water collecting unit includes a first liquid storage tank 10, and the first liquid storage tank 10 is used for collecting oil-water mixed liquid flowing down from the range hood. Specifically, the first liquid storage tank 10 of the embodiment is located at the bottom of the volute 82, and during the operation of the range hood, the oil-water mixture accumulated on the volute 82 of the fan system 81 and on the impeller 83 may flow into the first liquid storage tank 10, and similarly, after the cleaning program is started, the cleaning liquid sprayed onto the fan system 81 by the flushing unit of the cleaning circulation device may also be collected into the first liquid storage tank 10.
The first turbidity sensor 11 is disposed on the first liquid storage tank 10 and is configured to detect turbidity of the oil-water mixture in the first liquid storage tank 10 to obtain turbidity information of the oil-water mixture in the first liquid storage tank 10. The first liquid level sensor 12 is disposed on the first liquid storage tank 10, and is configured to detect a liquid level of the oil-water mixture in the first liquid storage tank 10, and obtain liquid level information of the oil-water mixture in the first liquid storage tank 10. The first turbidity sensor 11 and the first liquid level sensor 12 can adopt various turbidity sensor structures and liquid level sensor structures in the prior art.
Continuing to refer to fig. 1, the filtering unit 30 includes a pre-filter 31 and a filter body, the pre-filter 31 is connected to the first liquid storage tank 10, and is used for filtering the oil-water mixture in the first liquid storage tank 10 and blocking large-particle impurities, the filter body is located at the downstream of the pre-filter 31, the filter body can adopt a multi-stage composite filter element, and the multi-stage composite filter element combines different pumping pressures, so that a good purifying effect can be achieved.
The first pump 21 is disposed between the first reservoir 10 and the pre-filter 31 of the filtering unit 30, and is configured to pump the oil-water mixture in the first reservoir 10 to the filtering unit 30. Because the turbidity of water oil mixture is different, filter unit 30 corresponds the pumping pressure (operating pressure) difference that reaches the required best filter effect, in order to reach best purifying effect, effectively reduce the turbidity of the washing liquid after filtering, thereby guarantee to correspond the cleaning performance of part in the range hood, the controller of this embodiment not only can control the start-up and the closing of first pump 21, can also control the pumping pressure of first pump 21 through the output signal of received turbidity sensor 11. For example, when the first turbidity sensor 11 detects that the turbidity range of the mixed oil-water solution in the first tank 10 is a low range, the controller may control the first pump 21 to normally operate, so that the mixed oil-water solution in the first tank 10 may pass through the pre-filter 31 and the composite filter at a low flow rate (e.g., a flow rate). When the first turbidity sensor 11 detects that the turbidity range of the oil-water mixture in the first tank 10 is in the middle range, the controller may control the first pump 21 to operate at a high power, so that the oil-water mixture in the first tank 10 may pass through the pre-filter 31 and the composite filter at a middle flow rate (e.g., 2 a). When the first turbidity sensor 11 detects that the turbidity range of the oil-water mixture in the first liquid storage tank 10 is a high range, the controller may control the first pump 21 to operate at full power, so that the oil-water mixture in the first liquid storage tank 10 may pass through the pre-filter 31 and the composite filter element at a high flow rate (e.g., 4 a).
The cleaning liquid storage unit comprises a second liquid storage tank 40, and the second liquid storage tank 40 is connected with the filtering unit 30 and is used for storing the cleaning liquid obtained after being filtered by the filtering unit 30. The second turbidity sensor 41 is disposed on the second liquid storage tank 40, and is configured to detect turbidity of the oil-water mixture in the second liquid storage tank 40 to obtain turbidity information of the oil-water mixture in the second liquid storage tank 40. The second liquid level sensor 42 is disposed on the second liquid storage tank 40, and is configured to detect a liquid level of the oil-water mixture in the second liquid storage tank 40, and obtain liquid level information of the oil-water mixture in the second liquid storage tank 40. The second turbidity sensor 41 and the second liquid level sensor 42 may be of various turbidity sensor structures and liquid level sensor structures in the prior art.
The flushing unit comprises an ejector 71, the ejector 71 is connected with the second liquid storage tank 40 and is used for spraying the cleaning liquid in the second liquid storage tank 40 onto a part to be cleaned in the range hood, wherein a jet orifice of the ejector 71 can be over against an air suction port of the fan system. The second pump 61 is provided between the second liquid storage tank 40 and the ejector 71, and pumps the cleaning liquid in the second liquid storage tank 40 to the ejector 71, and in order to further improve the capability of the cleaning liquid to dissolve the oil stains, a heating system 51 is provided between the second liquid storage tank 40 and the second pump 61, and the heating system 51 is used for heating the cleaning liquid flowing out of the second liquid storage tank 40.
Because the jet speed of the jet 71 of the flushing unit is different, the impact force on the oil stain on the corresponding component in the range hood is different, the cleaning effect is different, and because the turbidity value of the cleaning liquid is different, the dissolving capacity of the oil stain is also different, therefore, in order to make the jet speed of the jet 71 of the flushing unit better match with the turbidity value of the cleaning liquid, the controller of the embodiment can control the pumping pressure of the second pump 61 through the received output signal of the second turbidity sensor 41. For example, when the second turbidity sensor 41 detects that the turbidity range of the oil-water mixture in the second storage tank 40 is in a low range, the controller may control the second pump 61 to normally operate, so that the oil-water mixture in the second storage tank 40 can be pumped to the injector 71 at a low flow rate (e.g., flow rate b), i.e., the injection speed of the injector 71 is relatively low. When the second turbidity sensor 41 detects that the turbidity range of the oil-water mixture in the second storage tank 40 is in a high range, the controller may control the second pump 61 to operate at a high power, so that the oil-water mixture in the second storage tank 40 may be pumped to the injector 71 at a high flow rate (e.g., 2b), i.e., the injection speed of the injector 71 is relatively high. Meanwhile, the controller controls the impeller 83 of the range hood to rotate forward and backward at a speed matched with the turbidity value Bn according to the received output signal of the second turbidity sensor 41. For example, when the second turbidity sensor 41 detects that the turbidity range of the oil-water mixture in the second tank 40 is in the low range, the controller controls the impeller 83 to rotate in the forward and reverse directions at a high rotation speed. When the second turbidity sensor 41 detects that the turbidity range of the oil-water mixed liquid in the second liquid storage tank 40 is in a high range, the controller controls the impeller 83 to rotate in the forward and reverse directions at a low rotation speed, so that the cleaning liquid can be prevented from being thrown out immediately after being sprayed onto the parts such as the impeller 83, the contact time of the cleaning liquid and oil stains on the parts such as the impeller 83 is prolonged, the cleaning liquid can be fully contacted with and dissolved in the oil stains on the parts such as the impeller 83, and the cleaning effect is improved.
Because the existing range hood basically judges whether to start the cleaning program according to the effective running time of the range hood, and judges whether to start the cleaning program of the range hood according to the effective running time of the range hood, unreasonable parts exist, and the problem that oil stains are accumulated too much due to missing the optimal cleaning time of the range hood is difficult to avoid. Therefore, an important utility model of the present invention is that the controller obtains and records the turbidity information of the oil-water mixed liquid in the first liquid storage tank 10 and the accumulated operation time information of the range hood, and controls the start of the cleaning program of the range hood when the accumulated operation time of the range hood reaches or exceeds the preset accumulated operation time threshold and the turbidity of the oil-water mixed liquid in the first liquid storage tank 10 reaches the preset turbidity threshold. The embodiment adds the turbidity information judgment condition of the oil-water mixed liquid in the first liquid storage tank 10 on the basis that the accumulated running time of the range hood reaches or exceeds the preset accumulated running time threshold value, can correct the defect of the mode of judging whether to start the cleaning program only through the accumulated running time of the range hood in the prior art, and can more accurately reflect the oil stain condition on the corresponding part in the range hood through the combination of the accumulated running time and the turbidity information of the range hood, thereby accurately judging whether the range hood needs to be cleaned, and avoiding the problem that the oil stain accumulation is too much due to missing the optimal cleaning opportunity.
Referring to fig. 2 and 3, a cleaning control method for a range hood includes the following steps:
and S1, stopping the operation of the range hood.
S2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmIf yes, the process proceeds to step S3, and if no, the step S2 is repeated.
The step S2 further includes the steps of:
s21, the first liquid level sensor 12 obtains the liquid level information of the oil-water mixture in the first liquid storage tank 10, and determines whether the liquid level of the oil-water mixture in the first liquid storage tank 10 is within a predetermined liquid level interval, if yes, the process proceeds to step S3, and if no, the step S21 is repeated, thereby improving the accuracy of the turbidity detection of the oil-water mixture in the first liquid storage tank 10 by the first turbidity sensor 11 in the following step S3.
S3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank 10 through the first turbidity sensor 110Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, the process proceeds to step S4, and if no, the step S3 is repeated.
And S4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again.
S5, starting the first pump 21, pumping the oil-water mixed liquid in the first liquid storage tank 10 to the filtering unit 30, filtering by the filtering unit 30 to obtain a cleaning liquid, storing the cleaning liquid into the second liquid storage tank 40, acquiring liquid level information of the cleaning liquid in the second liquid storage tank 40 through the second liquid level sensor 42, and closing the first pump 21 when the liquid level in the second liquid storage tank 40 reaches a third set liquid level, so that quantitative cleaning liquid is stored in the second liquid storage tank 40.
In step S5, in order to avoid overflow of the first reservoir 10 due to liquid fullness when receiving the oil-water mixture, when the first liquid level sensor 12 detects that the oil-water mixture received in the first reservoir 10 reaches the first set liquid level, a signal may be sent to the controller to prompt liquid fullness, and at this time, the first pump 21 may be driven automatically or manually by the user. Correspondingly, when the first liquid level sensor 12 detects that the received oil-water mixed liquid in the first liquid storage tank 10 is lower than the second set liquid level, a signal can be sent to the controller to control the first pump 21 to be closed, so that the evacuation problem is avoided.
Wherein, the step S5 further includes the following steps:
s51, the controller obtains the initial turbidity value A of the oil-water mixed liquid in the first liquid storage tank 10 according to the first turbidity sensor 110Or the turbidity value A of the oil-water mixed liquid received in the first liquid storage tank 10 obtained after the nth cleaning process is completednControlling the first pump 21 to be at a turbidity value A0Or turbidity value AnAnd matching pumping pressures, wherein n is the number of cleaning times which are continued after the cleaning program is started, and n is 1, 2, 3 … ….
And S6, starting the heating system 51 for heating the cleaning liquid in the second liquid storage tank 40, starting the second pump 61 after the cleaning liquid reaches the set temperature, pumping the heated cleaning liquid to the ejector 71, ejecting the heated cleaning liquid to the part to be cleaned in the range hood through the ejector 71, re-flowing the cleaned oil-water mixed liquid into the first liquid storage tank 10, and when the liquid level in the second liquid storage tank 40 is lower than the fourth set liquid level, closing the second pump 61 to complete a cleaning process and recording the continuous cleaning times in the cleaning process.
The step S6 further includes the steps of:
s61, detecting the turbidity of the cleaning liquid in the second liquid storage tank 40 before the current nth cleaning process is started through the second turbidity sensor 41, and acquiring a turbidity value BnThe controller controls the second pump 61 to be at the turbidity value B according to the received output signal of the second turbidity sensor 41nMatched pumping pressure.
S62, detecting the turbidity of the cleaning liquid in the second liquid storage tank 40 before the current nth cleaning process is started through the second turbidity sensor 41, and controlling the impeller 83 of the range hood to be equal to the turbidity value B by the controller according to the received output signal of the second turbidity sensor 41nThe matched speed is used for forward and reverse rotation.
S7, detecting the turbidity of the oil-water mixed liquid received in the first liquid storage tank 10 after the current nth cleaning process is finished through the first turbidity sensor 11, and acquiring a turbidity value An。
S8, judging whether the cleaning process is the first cleaning, if yes, going to step S9, if no, going to step S10.
S9, obtaining the turbidity value A currently1The turbidity value A of the oil-water mixed liquid in the first liquid storage tank 10 obtained initially0Comparing to obtain the turbidity change value delta A of the oil-water mixed liquid after the cleaning process1Wherein, Δ A1＝A1-A0N is the number of cleaning operations which are continued after the start of the cleaning program, and then, the determination of Delta A1And (4) whether the turbidity change is less than or equal to a preset turbidity change threshold value A, if so, the step S11 is carried out, and if not, the step S5 is returned to continue the next cleaning.
S10, obtaining the turbidity value A currentlynObtaining turbidity value A after finishing the last cleaning processn-1Comparing to obtain the turbidity change value delta A of the oil-water mixed liquid after the cleaning processnWherein, Δ An＝An-An-1N is the number of washes continued after the cleaning sequence is initiated, n is 2, 3 … …, and then Δ a is determinednIf the turbidity is less than or equal to the preset turbidity change threshold A, if so, the process goes to step S11 to continue the operationAnd the next cleaning, if not, returning to the step S5 to continue the next cleaning.
And S11, finishing the cleaning program.
Claims (16)
1. A range hood, comprising:
the oil-water collecting unit comprises a first liquid storage tank (10), and the first liquid storage tank (10) is used for collecting oil-water mixed liquid flowing down from a range hood;
it is characterized by also comprising:
a first turbidity sensor (11) for detecting the turbidity of the oil-water mixed liquid in the first liquid storage tank (10);
and the controller is in electrical signal connection with the first turbidity sensor (11) and is used for acquiring and recording the turbidity information of the oil-water mixed liquid in the first liquid storage tank (10) and the accumulated running time information of the range hood and controlling the start of a cleaning program of the range hood when the accumulated running time of the range hood reaches or exceeds a preset accumulated running time threshold value and the turbidity of the oil-water mixed liquid in the first liquid storage tank (10) reaches a preset turbidity threshold value.
2. The range hood of claim 1, further comprising:
the filtering unit (30) is connected with the first liquid storage tank (10) and is used for filtering the oil-water mixed liquid in the first liquid storage tank (10);
the first pump (21) is arranged between the first liquid storage tank (10) and the filtering unit (30) and used for pumping the oil-water mixed liquid in the first liquid storage tank (10) to the filtering unit (30), and the first pump (21) is in electric signal connection with the controller and is controlled to be started or closed by the controller;
the cleaning liquid storage unit comprises a second liquid storage tank (40), and the second liquid storage tank (40) is connected with the filtering unit (30) and is used for storing the cleaning liquid obtained after filtering by the filtering unit (30);
the flushing unit comprises an ejector (71), the ejector (71) is connected with the second liquid storage tank (40) and is used for spraying the cleaning liquid in the second liquid storage tank (40) onto a part to be cleaned in the range hood;
and the second pump (61) is arranged between the second liquid storage tank (40) and the sprayer (71) and is used for pumping the cleaning liquid in the second liquid storage tank (40) to the sprayer (71), and the second pump (61) is in electric signal connection with the controller and is controlled to be started or closed by the controller.
3. The range hood of claim 2, wherein:
the controller controls the pumping pressure of the first pump (21) by receiving an output signal of the first turbidity sensor (11).
4. A range hood according to any one of claims 1-3, further comprising:
the first liquid level sensor (12) is used for detecting the liquid level of the oil-water mixed liquid in the first liquid storage tank (10), and the controller is in electric signal connection with the first liquid level sensor (12).
5. A range hood as claimed in claim 2 or 3, wherein: still including being arranged in carrying out the second level sensor (42) that detects to the liquid level of the water oil mixture in second liquid reserve tank (40), the controller with second level sensor (42) electricity signal connection, with when the liquid level of the water oil mixture in second liquid reserve tank (40) reaches the third and sets for the liquid level control first pump (21) are closed and control second pump (61) and are started, and the liquid level of the water oil mixture in second liquid reserve tank (40) is less than the fourth and sets for the control when the liquid level the second pump (61) are closed.
6. The range hood of claim 2, further comprising:
and the second turbidity sensor (41) is used for detecting the turbidity of the cleaning liquid in the second liquid storage tank (40) and is in electric signal connection with the controller, and the controller controls the pumping pressure of the second pump (61) through the received output signal of the second turbidity sensor (41).
7. The range hood of claim 5, wherein: the component to be cleaned in the range hood comprises at least one of a volute (82) and an impeller (83).
8. The range hood of claim 5, wherein: the cleaning device further comprises a heating system (51) arranged between the second liquid storage tank (40) and the second pump (61), wherein the heating system (51) is used for heating the cleaning liquid in the second liquid storage tank (40).
9. A cleaning control method using the range hood as claimed in any one of claims 1 to 8, characterized by comprising the steps of:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank (10)0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
and S4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again.
10. A cleaning control method using the range hood as claimed in claim 4, characterized by comprising the steps of:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmAnd if so, the mobile phone can be used for,step S21 is entered, if not, the step S2 is repeated;
s21, acquiring the liquid level information of the oil-water mixed liquid in the first liquid storage tank 10 through the first liquid level sensor (12), judging whether the liquid level of the oil-water mixed liquid in the first liquid storage tank 10 is within a preset liquid level interval, if so, entering the step S3, and if not, repeating the step S21;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank (10)0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
and S4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again.
11. A cleaning control method using the range hood as claimed in claim 5, characterized by comprising the steps of:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank (10)0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
s4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again;
s5, starting a first pump (21), pumping the oil-water mixed liquid in the first liquid storage tank (10) to a filtering unit (30), filtering by the filtering unit (30) to obtain a cleaning liquid, storing the cleaning liquid in a second liquid storage tank (40), acquiring liquid level information of the cleaning liquid in the second liquid storage tank (40) through a second liquid level sensor (42), and closing the first pump (21) when the liquid level in the second liquid storage tank (40) reaches a third set liquid level, so that a certain amount of cleaning liquid is stored in the second liquid storage tank (40);
and S6, starting the second pump (61), pumping the cleaning liquid in the second liquid storage tank (40) to the ejector (71), ejecting the cleaning liquid to the to-be-cleaned part in the range hood through the ejector (71), re-flowing the cleaned oil-water mixed liquid to the first liquid storage tank (10), and closing the second pump (61) when the liquid level in the second liquid storage tank (40) is lower than a fourth set liquid level to finish a cleaning process and record the cleaning times.
12. The cleaning control method of the range hood according to claim 11, characterized in that:
the following steps are also included after step S6:
s7, detecting the turbidity of the oil-water mixed liquid received in the first liquid storage tank (10) after the current nth cleaning process is finished through the first turbidity sensor (11), and acquiring a turbidity value An；
S8, judging whether the cleaning process is the first cleaning, if so, going to step S9, and if not, going to step S10;
s9, obtaining the turbidity value A currently1Compared with the turbidity value A0 of the oil-water mixed liquid in the first liquid storage tank (10) obtained initially, the turbidity change value delta A of the oil-water mixed liquid obtained after the cleaning process is obtained1Wherein, Δ A1＝A1-A0N is the number of cleaning operations which are continued after the start of the cleaning program, and then, the determination of Delta A1Whether the turbidity change is less than or equal to a preset turbidity change threshold value A, if so, the step S11 is carried out, if not, the step S5 is returned, and the next cleaning is continued;
s10, obtaining the turbidity value A currentlynObtaining turbidity value A after finishing the last cleaning processn-1Comparing to obtain the turbidity change value delta A of the oil-water mixed liquid after the cleaning processnWherein, Δ An＝An-An-1N is the number of washes that last after the cleaning sequence is initiated, n is 2, 3 … …, howeverThen, the determination of Delta AnWhether the turbidity change is less than or equal to a preset turbidity change threshold value A, if so, entering a step S11, continuing to perform next cleaning, otherwise, returning to the step S5, and continuing to perform next cleaning;
and S11, finishing the cleaning program.
13. The cleaning control method of the range hood according to claim 12, characterized in that: the step S5 further includes the following steps:
s51, the controller obtains the initial turbidity value A of the oil-water mixed liquid in the first liquid storage tank (10) according to the first turbidity sensor (11)0Or the turbidity value A of the oil-water mixed liquid received in the first liquid storage tank (10) obtained after the nth cleaning process is finishednControlling the first pump (21) to be at a turbidity value A0Or turbidity value AnMatched pumping pressure.
14. A cleaning control method using the range hood as claimed in claim 6, characterized by comprising the steps of:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank (10)0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
s4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again;
s5, starting a first pump (21), pumping the oil-water mixed liquid in the first liquid storage tank (10) to a filtering unit (30), filtering by the filtering unit (30) to obtain a cleaning liquid, storing the cleaning liquid in a second liquid storage tank (40), acquiring liquid level information of the cleaning liquid in the second liquid storage tank (40) through a second liquid level sensor (42), and closing the first pump (21) when the liquid level in the second liquid storage tank (40) reaches a third set liquid level, so that a certain amount of cleaning liquid is stored in the second liquid storage tank (40);
s6, starting a second pump (61), pumping the cleaning liquid in the second liquid storage tank (40) to the ejector (71), ejecting the cleaning liquid to the to-be-cleaned part in the range hood through the ejector (71), re-flowing the cleaned oil-water mixed liquid to the first liquid storage tank (10), and closing the second pump (61) when the liquid level in the second liquid storage tank (40) is lower than a fourth set liquid level to finish a cleaning process and record the cleaning times;
the step S6 further includes the steps of:
s61, detecting the turbidity of the cleaning liquid in the second liquid storage tank (40) before the current nth cleaning process is started through the second turbidity sensor (41), and acquiring a turbidity value BnThe controller controls the second pump (61) to be at a turbidity value B according to the received output signal of the second turbidity sensor (41)nMatched pumping pressure.
15. A cleaning control method using the range hood as claimed in claim 7, characterized by comprising the steps of:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds a preset accumulated operation time threshold tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank (10)0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
s4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again;
s5, starting a first pump (21), pumping the oil-water mixed liquid in the first liquid storage tank (10) to a filtering unit (30), filtering by the filtering unit (30) to obtain a cleaning liquid, storing the cleaning liquid in a second liquid storage tank (40), acquiring liquid level information of the cleaning liquid in the second liquid storage tank (40) through a second liquid level sensor (42), and closing the first pump (21) when the liquid level in the second liquid storage tank (40) reaches a third set liquid level, so that a certain amount of cleaning liquid is stored in the second liquid storage tank (40);
s6, starting a second pump (61), pumping the cleaning liquid in the second liquid storage tank (40) to the ejector (71), ejecting the cleaning liquid to an impeller of the range hood through the ejector (71), re-flowing the cleaned oil-water mixed liquid into the first liquid storage tank (10), and closing the second pump (61) when the liquid level in the second liquid storage tank (40) is lower than a fourth set liquid level to finish a cleaning process and record the cleaning times;
the step S6 further includes the steps of:
s61, detecting the turbidity of the cleaning liquid in the second liquid storage tank (40) before the current nth cleaning process is started through the second turbidity sensor (41), and acquiring a turbidity value BnThe controller controls the second pump (61) to be at a turbidity value B according to the received output signal of the second turbidity sensor (41)nMatched pumping pressures;
s62, detecting the turbidity of the cleaning liquid in the second liquid storage tank (40) before the current nth cleaning process is started through the second turbidity sensor (41), and acquiring a turbidity value BnThe controller controls the impeller of the range hood to be in accordance with the received output signal of the second turbidity sensor (41) and the turbidity value BnThe matched speed is used for forward and reverse rotation.
16. A cleaning control method using the range hood as claimed in claim 8, characterized by comprising the steps of:
s1, stopping the operation of the range hood;
s2, acquiring the accumulated operation time t of the range hood, and judging whether the accumulated operation time t of the range hood reaches or exceeds the preset accumulated operation timeThreshold value tmIf yes, go to step S3, if no, repeat the step S2;
s3, obtaining the turbidity value A of the current oil-water mixed liquid in the first liquid storage tank (10)0Judging the current turbidity value A of the oil-water mixed liquid0Whether or not the turbidity is greater than a set turbidity threshold value AmIf yes, go to step S4, if no, repeat the step S3;
s4, starting a cleaning program of the range hood, clearing the accumulated running time t of the range hood, and timing again;
s5, starting a first pump (21), pumping the oil-water mixed liquid in the first liquid storage tank (10) to a filtering unit (30), filtering by the filtering unit (30) to obtain a cleaning liquid, storing the cleaning liquid in a second liquid storage tank (40), acquiring liquid level information of the cleaning liquid in the second liquid storage tank (40) through a second liquid level sensor (42), and closing the first pump (21) when the liquid level in the second liquid storage tank (40) reaches a third set liquid level, so that a certain amount of cleaning liquid is stored in the second liquid storage tank (40);
and S6, starting a heating system for heating the cleaning liquid in the second liquid storage tank (40), starting the second pump (61) after the cleaning liquid reaches a set temperature, pumping the heated cleaning liquid to the ejector (71) through the second pump (61), ejecting the cleaning liquid to a part to be cleaned in the range hood through the ejector (71), re-flowing the cleaned oil-water mixed liquid into the first liquid storage tank (10), and closing the second pump (61) when the liquid level in the second liquid storage tank (40) is lower than a fourth set liquid level to finish a cleaning process and record the cleaning times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110488866.1A CN113108348A (en) | 2021-04-28 | 2021-04-28 | Range hood and cleaning control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110488866.1A CN113108348A (en) | 2021-04-28 | 2021-04-28 | Range hood and cleaning control method thereof |
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| CN113108348A true CN113108348A (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283343A (en) * | 2022-07-16 | 2022-11-04 | 深圳市第三人民医院 | Medical cleaning system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283343A (en) * | 2022-07-16 | 2022-11-04 | 深圳市第三人民医院 | Medical cleaning system and control method |
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