CN110906394B - Oil cup state detection method of range hood - Google Patents
Oil cup state detection method of range hood Download PDFInfo
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- CN110906394B CN110906394B CN201911073627.9A CN201911073627A CN110906394B CN 110906394 B CN110906394 B CN 110906394B CN 201911073627 A CN201911073627 A CN 201911073627A CN 110906394 B CN110906394 B CN 110906394B
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/80—Arrangements for signal processing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
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Abstract
The invention relates to a method for detecting the state of an oil cup of a range hood, which is characterized by comprising the following steps: detecting and acquiring first liquid level data Y1 of oil stains in the oil cup after the range hood is shut down every time, and detecting and acquiring second liquid level data Y of the oil stains in the oil cup when the range hood is started up and works every time; and calculating the liquid level difference delta Y of the oil stain in the oil cup as Y1-Y after the range hood is shut down last time and when the range hood is started last time, and if the delta Y is more than or equal to Y0, judging the dry-out condition of the oil stain in the oil cup, wherein Y0 is the liquid level difference threshold value of the dry-out condition. The oil cup state detection method of the range hood can remind a user of cleaning oil stains in the oil cup in time, avoid increase of cleaning difficulty of the user due to drying of the oil stains, and prevent increase of cleaning difficulty of the oil stains in the oil cup due to continuous use.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a method for detecting the state of an oil cup of a range hood.
Background
The cleaning of the range hood is an old and difficult problem, and the state judgment and cleaning method of the oil cup is also a relatively concerned content in the field of range hoods. The invention discloses a Chinese patent with publication number CN109028198A (application number 201810941694.7) 'an oil full self-reminding oil collecting cup', wherein the oil collecting cup comprises an oil quantity detection device which can detect whether oil stains exist at the cup mouth of an oil collecting cup body; when the oil stain of the oil collecting cup body reaches the cup opening, an alarm signal is sent out; when the oil collecting cup is used, whether the oil quantity in the oil collecting cup body overflows or not is monitored by the pressure of the oil quantity detection device arranged at the cup opening end of the oil collecting cup body, and when oil stains overflow quickly, the oil quantity reminding device reminds the user of the signal reminding assembly.
And the Chinese utility model patent with the publication number of CN208091536U (application number of 201820246019.8) discloses an oil cup liquid level measuring device of a range hood, wherein the range hood disclosed therein utilizes an ultrasonic transmitting tube and an ultrasonic receiving tube to realize the detection of the liquid level in the oil cup.
However, the existing oil cup liquid level detection device can only complete the detection of the liquid level in the oil cup, and further remind a user to clean the oil cup, different users have different frequency for absorbing the used products of the range hood, under the condition that the range hood is not used for a long time, the oil stain in the oil cup can be dried, the existing oil cup liquid level detection device cannot detect whether the oil stain in the oil cup is dried, and the applicability treatment is difficult to be carried out under the condition that the oil stain is dried.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a method for detecting the state of an oil cup of a range hood, which can determine whether the oil stain is dry or not on the basis of detecting the liquid level of the oil stain in the oil cup, aiming at the prior art.
The second technical problem to be solved by the present invention is to provide a method for detecting the oil cup state of a range hood capable of determining the degree of drying and caking of oil stains in view of the above prior art.
The third technical problem to be solved by the present invention is to provide a method for detecting the state of an oil cup of a range hood, which can determine whether a large-density foreign matter falls into the oil cup, in view of the above prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: detecting and acquiring second liquid level data Y of oil stains in the oil cup when the range hood is started to work every time, and detecting and acquiring first liquid level data Y1 of the oil stains in the oil cup after the range hood is shut down every time;
and calculating the liquid level difference delta Y of the oil stain in the oil cup as Y1-Y after the range hood is shut down last time and when the range hood is started last time, and if the delta Y is more than or equal to Y0, judging the dry-out condition of the oil stain in the oil cup, wherein Y0 is the liquid level difference threshold value of the dry-out condition.
In order to avoid the influence of the shape of the oil cup on the judgment result, a Y-Y00 relation curve corresponding to the standard oil density oil is set according to different oil cup shape parameters, wherein Y refers to the liquid level of the standard oil density oil in the oil cup in a normal state, and Y00 refers to a liquid level difference threshold value for judging the dry and dry condition of the standard oil density oil;
and determining Y0 according to the specific oil cup shape parameters of the range hood, Y1 and the corresponding relation curve of Y-Y00.
In order to eliminate the influence of the grease density of the unused oil on the judgment result, a ratio parameter K of the grease density of the used oil and the standard grease density is determined according to the type of the oil used by a user, and then Y0 is determined according to the specific oil cup shape parameters of the range hood, Y1 and K.
The technical scheme adopted by the invention for solving the second technical problem is as follows: and when the range hood is started, simultaneously detecting and acquiring initial weight data W of the oil stain in the oil cup, when the oil stain in the oil cup is judged to be dried, calculating the average oil density rho of the oil stain in the current oil cup according to Y and W, and determining the average drying degree of the oil stain in the oil cup according to the change ratio A of rho to the oil density rho 0 of the used oil, namely (rho-rho 0)/rho 0.
In order to more accurately determine the drying state of the grease in the oil cup, detecting and acquiring ending weight data W1 of the grease in the oil cup after the range hood is shut down each time;
when the range hood is started again, if the oil stain in the oil cup is judged to be dry, calculating oil stain weight change data delta W which is W1-W and is generated in the starting process of the range hood at the previous time according to initial weight data W which is obtained when the range hood is started at the previous time and ending weight data W1 which is obtained when the range hood is shut down at the previous time;
calculating the grease density rho 1 corresponding to the oil stain flowing into the oil cup in the previous working process of the range hood according to the delta Y and the delta W, and determining the dryness degree of the oil stain increased in the previous working process of the range hood in the oil cup according to the change proportion B of the rho 1 relative to the grease density rho 0 of the used oil, namely (rho 1-rho 0)/rho 0.
The technical scheme adopted by the invention for solving the third technical problem is as follows: the rho 1 is compared with a density threshold rho of foreign matters in the oil cupmaxMaking a comparison if ρ 1 > ρmaxAnd judging that the oil cup has a high density of foreign matters.
Compared with the prior art, the invention has the advantages that: according to the method for detecting the state of the oil cup of the range hood, whether the oil cup is dry or not is judged according to the liquid level variation of the oil cup in the interval time of two times of use of the range hood, and if the liquid level variation is too large, the oil stain in the oil cup is judged to be dry, so that a user can be reminded of cleaning the oil stain in the oil cup in time, and the difficulty in cleaning the oil stain in the heavy oil cup caused by continuous use of the user is avoided.
Furthermore, the oil cup state detection method of the range hood can also judge the drying degree of the oil stain in the oil cup through the density calculation of the oil stain, and is convenient for cleaning the oil stain by adopting different cleaning strategies on the basis of prompting a user.
In addition, the oil cup state detection method of the range hood can also judge whether foreign matters exist in the oil cup, so that a user can be reminded of cleaning the foreign matters conveniently.
Drawings
Fig. 1 is a flowchart of a method for detecting the state of an oil cup of a range hood according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
When the oil cup state detection method of the range hood in the embodiment is used, a relation curve of Y-Y00 corresponding to standard grease density oil is set for different oil cup shape parameters is stored in a memory of the range hood, wherein Y refers to a liquid level of the standard grease density oil in an oil cup in a normal state, and Y00 refers to a liquid level difference threshold value for judging a dry-out condition of the standard grease density oil. And a ratio parameter table of the grease density of different types of oil and the standard grease density is stored, so that the method is convenient to use in the following method. When the range hood is used, a user can select the type of oil to be used during cooking, and then the proportional parameter K of the grease density of the used oil and the standard grease density is conveniently determined.
As shown in fig. 1, the method for detecting the state of the oil cup of the range hood in the embodiment includes the following steps:
and when the range hood is started up every time, detecting and acquiring second liquid level data Y of the oil stains in the oil cup, and detecting and acquiring initial weight data W of the oil stains in the oil cup. After the range hood is shut down every time, first liquid level data Y1 of greasy dirt in the oil cup is detected and obtained, and ending weight data W1 of the greasy dirt in the oil cup is detected and obtained.
After the range hood is started, calculating the oil stain liquid level difference delta Y in the oil cup between the last time of the range hood shutdown and the next time of the range hood startup as Y1-Y, if the delta Y is more than or equal to Y0, the oil stain liquid level in the oil cup when the range hood is started up is reduced by a large amount relative to the liquid level of the range hood after the last time of the shutdown, and the oil stain liquid level is greatly reduced under the condition that the oil stain in the oil cup is not treated because the oil stain is dried, and at the moment, judging the condition that the oil stain in the oil cup is dried, wherein Y0 is the liquid level difference threshold value under the condition that the dried stain is generated. And Y0 is determined according to the specific oil cup shape parameters of the range hood, the oil stain liquid level Y1 in the oil cup after the range hood is shut down for the previous time and the corresponding relation curve of Y-Y00, namely, a corresponding Y00 value is searched on the Y-Y00 relation curve according to Y1, and then the proportion parameter K of the grease density of the used oil and the standard grease density is determined according to the type of the oil used by a user, and further Y0 is determined.
When the range hood is started, if the oil stain in the oil cup is judged to be dried, the volume V of the oil stain in the current oil cup is calculated according to the oil stain liquid level Y in the oil cup when the range hood is started again, the average grease density rho of the oil stain in the current oil cup is calculated by utilizing the V and the initial weight W of the oil stain in the current oil cup, and the average drying degree of the oil stain in the oil cup is determined according to the change ratio A of rho to the grease density rho 0 of the used oil, namely (rho-rho 0)/rho 0. At this moment, the range hood can display the dry and hard condition of the oil stain in the oil cup, the dry and hard degree can be given, the A value is higher, the representative dry and hard degree is higher, the range hood can adopt different treatment modes aiming at different dry and hard degrees, if the dry and hard degree is lower, the range hood can be controlled to automatically vibrate the oil stain in the oil cup, add water and other modes to treat the oil stain, and then a user cleans the oil stain again, and when the dry and hard degree is higher, the heating mode can be adopted to treat the oil stain, so that the user treats the oil stain again, and the treatment difficulty is reduced. And after the user treats the oil stain, clearing the detection data stored in the controller.
However, in the using process, some users still do not process the oil in the oil cup even if the range hood reminds the oil in the oil cup to be dried, the oil in the oil cup may be dried in a layered manner, and at this time, in order to more accurately reflect the drying state of the oil in the oil cup, the drying condition and the drying degree of the oil in the oil cup are recorded by the following method each time.
When the range hood is started again, if the oil stain in the oil cup is judged to be dry, calculating oil stain weight change data delta W which is W1-W and is generated in the starting process of the range hood at the previous time according to initial weight data W which is obtained when the range hood is started at the previous time and ending weight data W1 which is obtained when the range hood is shut down at the previous time;
calculating the grease density rho 1 corresponding to the oil stain flowing into the oil cup in the previous working process of the range hood according to the delta Y and the delta W, and determining the dryness degree of the oil stain increased in the previous working process of the range hood in the oil cup according to the change proportion B of the rho 1 relative to the grease density rho 0 of the used oil, namely (rho 1-rho 0)/rho 0. Therefore, the drying condition and the drying degree of the oil cup can be conveniently and detailedly recorded every time, and a better treatment method for the oil stain in the oil cup is further determined.
In addition, in a kitchen environment, sundries falling in an oil cup are inevitable, the judgment of the oil stain condition in the oil cup is not greatly influenced by sundries such as dust, bugs and the like, but the judgment of the oil stain condition in the oil cup is influenced by other sundries with large density such as screws, cooking matters and the like, the oil stain density has an upper limit value even under the condition of high dry junction, and the upper limit value of the oil stain density can be set as a density threshold value rho with the existence of the foreign mattersmaxFurther, ρ 1 is compared with a density threshold ρ of the oil cup where foreign matter existsmaxMaking a comparison if ρ 1 > ρmaxAnd then, the oil cup is judged to have the foreign matters with large density, and the range hood can remind a user to clean in a display or alarm mode.
The oil cup state detection method of the range hood can remind a user of cleaning oil stains in the oil cup in time, avoid increase of cleaning difficulty of the user due to drying of the oil stains, and prevent increase of cleaning difficulty of the oil stains in the oil cup due to continuous use. In addition, on the basis of prompting the user, different cleaning strategies are conveniently adopted to carry out oil stain treatment so as to reduce the cleaning difficulty of the user.
Claims (4)
1. A method for detecting the state of an oil cup of a range hood is characterized in that: detecting and acquiring second liquid level data Y of oil stains in the oil cup when the range hood is started to work every time, and detecting and acquiring first liquid level data Y1 of the oil stains in the oil cup after the range hood is shut down every time;
calculating the liquid level difference delta Y of the oil stain in the oil cup after the previous shutdown of the range hood and when the range hood is started again, namely Y1-Y, if the delta Y is more than or equal to Y0, judging the dry junction of the oil stain in the oil cup, wherein Y0 is the liquid level difference threshold value of the dry junction;
when the range hood is started, initial weight data W of oil stains in the oil cup are detected and obtained at the same time, when the condition that the oil stains in the oil cup are dried is judged, the average oil density rho of the oil stains in the current oil cup is calculated according to Y and W, and the average drying degree of the oil stains in the oil cup is determined according to the change ratio A of rho to the oil density rho 0 of the used oil, namely (rho-rho 0)/rho 0;
detecting and acquiring ending weight data W1 of oil stains in the oil cup after the range hood is shut down every time;
when the range hood is started again, if the oil stain in the oil cup is judged to be dry, calculating oil stain weight change data delta W which is W1-W and is generated in the starting process of the range hood at the previous time according to initial weight data W which is obtained when the range hood is started at the previous time and ending weight data W1 which is obtained when the range hood is shut down at the previous time;
calculating the grease density rho 1 corresponding to the oil stain flowing into the oil cup in the previous working process of the range hood according to the delta Y and the delta W, and determining the drying degree of the oil stain increased in the previous working process of the range hood in the oil cup according to the change proportion B of the rho 1 relative to the grease density rho 0 of the used oil, namely (rho 1-rho 0)/rho 0;
and (4) pretreating the oil stains according to different drying conditions.
2. The method for detecting the state of the oil cup of the range hood according to claim 1, wherein: setting a relation curve of Y-Y00 corresponding to the standard grease density oil according to different oil cup shape parameters, wherein Y refers to the liquid level of the standard grease density oil in the oil cup under a normal state, and Y00 refers to a liquid level difference threshold value for judging the dry junction condition of the standard grease density oil;
and determining Y0 according to the specific oil cup shape parameters of the range hood, Y1 and the corresponding relation curve of Y-Y00.
3. The method for detecting the state of the oil cup of the range hood according to claim 1, wherein: and determining a proportion parameter K of the grease density of the used oil and the standard grease density according to the type of the oil used by the user, and further determining Y0 according to the specific oil cup shape parameter of the range hood, Y1 and K.
4. The method for detecting the state of the oil cup of the range hood according to claim 1, wherein: the rho 1 is compared with a density threshold rho of foreign matters in the oil cupmaxMaking a comparison if ρ 1 > ρmaxAnd judging that the oil cup has a high density of foreign matters.
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| CN201911073627.9A CN110906394B (en) | 2019-11-06 | 2019-11-06 | Oil cup state detection method of range hood |
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| CN201911073627.9A CN110906394B (en) | 2019-11-06 | 2019-11-06 | Oil cup state detection method of range hood |
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| CN110906394B true CN110906394B (en) | 2021-08-20 |
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| CN112963878A (en) * | 2021-03-29 | 2021-06-15 | 珠海格力电器股份有限公司 | Range hood control method, device and system and range hood |
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| ITRG940008U1 (en) * | 1994-12-14 | 1996-06-14 | Giovanna Iacono | WATER PURIFIER |
| CN201373766Y (en) * | 2009-01-20 | 2009-12-30 | 中日流体传动股份有限公司 | Liquid-level detection device |
| JP6225638B2 (en) * | 2013-10-25 | 2017-11-08 | いすゞ自動車株式会社 | SCR system, SCR sensor, and level sensor |
| CN105222194B (en) * | 2015-10-23 | 2018-01-02 | 广东美的厨房电器制造有限公司 | The control method of smoke exhaust ventilator and smoke exhaust ventilator |
| CN106610093B (en) * | 2016-12-26 | 2019-09-20 | 珠海格力电器股份有限公司 | Control method of humidifying device, humidifying device and precision air conditioner |
| CN208091536U (en) * | 2018-02-11 | 2018-11-13 | 宁波方太厨具有限公司 | A kind of lubricating cup liquid level emasuring device of range hood |
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