CN111486427B - Control method for steam generation stage in automatic cleaning process of range hood - Google Patents
Control method for steam generation stage in automatic cleaning process of range hood Download PDFInfo
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- CN111486427B CN111486427B CN201910078141.8A CN201910078141A CN111486427B CN 111486427 B CN111486427 B CN 111486427B CN 201910078141 A CN201910078141 A CN 201910078141A CN 111486427 B CN111486427 B CN 111486427B
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000004140 cleaning Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 347
- 238000012886 linear function Methods 0.000 claims abstract description 37
- 230000007613 environmental effect Effects 0.000 claims description 12
- 230000003749 cleanliness Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Washing And Drying Of Tableware (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a control method for a steam generation stage in the automatic cleaning process of a range hood, which determines a linear function or a piecewise function according to the working time corresponding to a first water temperature or a first environment temperature and the working time corresponding to a second water temperature or a second environment temperature respectively in a fixed working period by a water pump in advance, and determines the working time corresponding to the current water temperature or the environment temperature of a water suction port of the water pump according to the linear function or the piecewise function in the steam generation stage of the automatic cleaning of the range hood. The invention adds the water temperature or environment temperature parameter of the water suction port, can adapt to the change of different external environment temperatures or different seasons, and keeps the property of cleanliness in the cleaning process.
Description
Technical Field
The invention belongs to the technical field of range hood cleaning, and particularly relates to a control method for a steam generation stage in an automatic range hood cleaning process.
Background
The automatic cleaning process of the range hood generally controls the heating logic according to the tested temperature of the heater or the water temperature after the heater is heated. However, due to the change of the external environment temperature, the water heating speed of the heater is different, and due to the change of the external environment temperature, the hardness of the pipe wall of a water suction pipe (the water pipe is generally made of plastic material) connected with the water pump is changed, and the thickness of the water pipe is changed due to expansion caused by heat and contraction caused by cold, which all affect the change of the water suction capacity of the water pump, and further affect the cleanliness of the cleaning process.
The influence of the external environment temperature factor is not added in the existing cleaning control program, so that the cleaning process is influenced by the factor, and the cleaning degree of the cleaning process is influenced.
The weather conditions in different seasons (spring, summer, autumn and winter) in one year are different, the temperature in spring and autumn is proper, the weather in summer is hot, the weather in winter is cold, and the weather in different seasons in different regions is different. Differences in the characteristic parameters of the cleaning assembly at different climates can lead to differences in the cleaning process: different temperatures can cause the hardness of a water pipe to change, the water surface tension to change, the hardness of a diaphragm pump to change and the like, and the water absorption capacity of the water pump can be changed due to the factors: through actual test discovery, with same water pump, test with different temperatures at the water inlet of water pump, compare the water that the water temperature is low, when the water that the water temperature is high, the ability that absorbs water of water pump obviously strengthens, the volume of drawing water of minute promptly strengthens. Therefore, when the water pump is started for the same time, the water quantity sucked by the water pump through the water pipe is different according to the different water temperatures, and under the condition that the power of the heater is fixed, the temperature rise of water which is heated after the water flows through the heater is influenced, namely the temperature rises when the water is less sucked, the sprayed steam quantity is large, the decomposition of oil stains is facilitated, and the cleaning effect is improved; on the contrary, the temperature rise is low when more water is absorbed, the amount of sprayed steam is small, the decomposition of oil stains is not facilitated, and the cleaning effect is reduced.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a control method for steam generation phase in the automatic cleaning process of a range hood.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a control method for a steam generation stage in an automatic cleaning process of a range hood, which comprises the following steps: determining a linear function or a piecewise function according to the working time corresponding to the first water temperature or the first environment temperature and the working time corresponding to the second water temperature or the second environment temperature respectively in a fixed working period by the water pump, and determining the working time corresponding to the current water temperature or the environment temperature of the water suction port of the water pump according to the linear function or the piecewise function in the steam generation stage of the automatic cleaning of the range hood.
In the above scheme, the determining a linear function or a piecewise function according to the operating time of the water pump corresponding to the first water temperature or the first environment temperature and the operating time of the water pump corresponding to the second water temperature or the second environment temperature respectively with a fixed operating period specifically includes: according to the first water temperature or the first environment temperature of the water suction port of the water pumpDetermining a linear function t ═ k for the operating time corresponding to the second water temperature or the second ambient temperature0T+b0Wherein k is0And b0The working time is a fixed value and is calculated and determined by the working time corresponding to the first water temperature or the first environment temperature and the working time corresponding to the second water temperature or the second environment temperature, T is the working time in each fixed working period, and T is the water temperature or the environment temperature of the water suction port of the water pump.
In the above scheme, the determining a linear function or a piecewise function according to the operating time of the water pump corresponding to the first water temperature or the first environment temperature and the operating time of the water pump corresponding to the second water temperature or the second environment temperature respectively with a fixed operating period specifically includes: determining that piecewise functions with fixed working cycles are adopted in different temperature intervals according to the working time corresponding to the first water temperature or the first environment temperature of the water suction port of the water pump and the working time corresponding to the second water temperature or the second environment temperature
Wherein T is the working time in each fixed working period, T is the current water temperature or the ambient temperature of the water suction port of the water pump, and T is the current water temperature or the ambient temperature of the water suction port of the water pump0、T1……TnIs a fixed temperature value, t0、t1……tnIs the fixed working time of the corresponding temperature interval.
In the above scheme, the determining the working time corresponding to the current water temperature or the ambient temperature at the water suction port of the water pump according to the linear function or the piecewise function specifically includes: when the current water temperature or the ambient temperature of the water suction port of the water pump is increased, the working time of the water pump in the fixed working period is correspondingly reduced, and when the current water temperature or the ambient temperature of the water suction port of the water pump is reduced, the working time of the water pump in the fixed working period is correspondingly increased.
The embodiment of the invention also provides a control method for the steam generation stage in the automatic cleaning process of the range hood, which comprises the following steps: and determining a linear function or a piecewise function according to a working period corresponding to the third water temperature or the third environment temperature and a working period corresponding to the fourth water temperature or the fourth environment temperature respectively in advance by the water pump in a fixed working time, and determining a working period corresponding to the current water temperature or the environment temperature of a water suction port of the water pump according to the linear function or the piecewise function in a steam generation stage of automatic cleaning of the range hood.
In the foregoing solution, the determining a linear function or a piecewise function according to the working cycle of the water pump corresponding to the third water temperature or the third environmental temperature and the working cycle of the water pump corresponding to the fourth water temperature or the fourth environmental temperature respectively in advance with a fixed working time specifically includes: determining a linear function t according to a working period corresponding to the third water temperature or the third environment temperature of the water suction port of the water pump and a working period corresponding to the fourth water temperature or the fourth environment temperature0＝k0T+b0Wherein k is0And b0Is a fixed value and is calculated and determined by the working time corresponding to the third water temperature or the third environment temperature and the working time corresponding to the fourth water temperature or the fourth environment temperature, t0In the working period, T is the water temperature or the environment temperature of the water suction port of the water pump.
In the foregoing solution, the determining a linear function or a piecewise function according to the working cycle of the water pump corresponding to the third water temperature or the third environmental temperature and the working cycle of the water pump corresponding to the fourth water temperature or the fourth environmental temperature respectively in advance with a fixed working time specifically includes: determining piecewise functions of working cycles adopted in different temperature intervals according to the working cycle corresponding to the third water temperature or the third environment temperature and the working cycle corresponding to the fourth water temperature or the fourth environment temperature of the water suction port of the water pump
Wherein T is the working period, T is the current water temperature or the ambient temperature of the water suction port of the water pump, and T0、T1……TnIs a fixed temperature value, t0、t1……tnIs the fixed working time of the corresponding temperature interval.
In the above scheme, in the steam generation stage of the automatic cleaning of the range hood, the sum of the working time of all the working periods is a fixed value.
In the above scheme, determining the working period corresponding to the current water temperature or the ambient temperature at the water suction port of the water pump according to the linear function or the piecewise function specifically includes: when the current water temperature or the ambient temperature of the water pump water suction port rises, the working period of the water pump is correspondingly increased, and when the current water temperature or the ambient temperature of the water pump water suction port falls, the working period of the water pump is correspondingly reduced.
Compared with the prior art, the invention adds the water temperature or the environmental temperature parameter of the water suction port, can adapt to different external environmental temperatures or different seasons, and keeps the property of cleanliness in the cleaning process.
Drawings
Fig. 1 is a flowchart of a control method for a steam generation stage in an automatic cleaning process of a range hood according to embodiment 1 of the present invention;
fig. 2 is a flowchart of a control method for a steam generation stage in an automatic cleaning process of a range hood according to embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment of the invention provides a control method for a steam generation stage in an automatic cleaning process of a range hood, and as shown in figure 1, the method is realized by the following steps:
step 101: determining the working time of the water pump corresponding to the first water temperature or the first environment temperature and the working time of the water pump corresponding to the second water temperature or the second environment temperature respectively in a fixed working period;
specifically, when the washing function is started, the detected temperature is T by detecting the water temperature of the water suction port of the water pump or the temperature of the external environment. At the steam generation stage, the fixed working period of the water pump is t0Total working time t of the water pump in the steam generation stage and working of the water pump in each fixed working periodTime t1The water temperature or the environment temperature is T, and the lower limit value of the water temperature or the environment temperature interval used for adjusting the working time of the water pump is T0The working time of the corresponding water pump is t2(ii) a Upper limit value of T1The working time of the corresponding water pump is t3。
Step 102: determining a linear function or a piecewise function according to the working time corresponding to the first water temperature or the first environment temperature and the working time corresponding to the second water temperature or the second environment temperature;
in particular, the fixed duty cycle t of the water pump0Determining the water or ambient temperature T0Time corresponding to the working time t of the water pump2Determining the water or ambient temperature T1Time corresponding water pump working time t3，Determining a linear function or a piecewise function according to the two groups of parameters, wherein the linear function form can be determined as t1＝k0T+b0Wherein k is0And b0Is a fixed value determined according to the two groups of parameters, wherein the piecewise function is at the water temperature or the environment temperature T according to the actual test data0To T1Determining the working time t of the water pump in sections within the range1。
Or determining that the piecewise function with fixed working period is adopted in different temperature intervals according to the working time corresponding to the first water temperature or the first environment temperature of the water suction port of the water pump and the working time corresponding to the second water temperature or the second environment temperature
Wherein T is the working time in each fixed working period, T is the current water temperature or the ambient temperature of the water suction port of the water pump, and T is the current water temperature or the ambient temperature of the water suction port of the water pump0、T1……TnIs a fixed temperature value, t0、t1……tnIs the fixed working time of the corresponding temperature interval.
Step 103: and in the steam generation stage of the automatic cleaning of the range hood, determining the working time corresponding to the current water temperature or the ambient temperature of the water suction port of the water pump according to the linear function or the piecewise function.
Specifically, when the current water temperature or the ambient temperature of the water pump water suction opening is increased, the working time of the water pump in the fixed working period is correspondingly reduced, and when the current water temperature or the ambient temperature of the water pump water suction opening is reduced, the working time of the water pump in the fixed working period is correspondingly increased.
For example, in an environment with an ambient temperature of 25 ℃, by testing water with different temperatures at the water suction port of the water pump, it is found that the water suction capacity of the water pump is increased during the process of increasing the water temperature, and the data is as follows:
from the data in the above table, it can be seen that when the water temperature is 5 ℃, the flow rate of the water pump is 780mL/min, and when the water temperature is 40 ℃, the flow rate of the water pump is 930mL/min, the change ratio reaches [ (930-780)/780] × 100% > -19.2%, and the change rate approaches 20%. In actual life, the water temperature for cleaning is generally between 5 ℃ and 40 ℃, the characteristic that the water absorption temperature is between 5 ℃ and 40 ℃ during cleaning is mainly researched, the treatment is carried out according to the parameter of 5 ℃ when the temperature is less than 5 ℃, and the treatment is carried out according to the parameter of 40 ℃ when the temperature is more than 40 ℃.
The fixed working cycle of the water pump is set to be 4 seconds (S: the same below), when the water temperature or the environment temperature is 5 ℃ or below, the working time of the water pump is determined to be 300 milliseconds (ms: the same below), when the water temperature or the environment temperature is 40 ℃ or above, the working time of the water pump is determined to be 240ms, namely, when the water temperature or the environment temperature is 5 ℃, the working time of the water pump is 300ms, and when the water temperature or the environment temperature is 40 ℃, the working time of the water pump is 240ms, according to the two groups of values:
linear function of first order: the working time of each cycle is t1(-12/7) × T +308.6 ≈ -1.7T +309, when T < 5 deg.C, T1300ms, when T > 40 ℃, T1Water pump for 240ms, i.e. when water temperature or ambient temperature is less than 5 deg.CThe working time is fixed to be 300ms, when the water temperature or the environment temperature is higher than 40 ℃, the working time of the water pump is fixed to be 240ms, and when the water temperature or the environment temperature is between 5 ℃ and 400 ℃, the working time of the water pump is obtained by calculating a linear function.
Piecewise function mode: the working time of each cycle is
The unit is ms, namely different fixed time is adopted for the working time of the water pump in different temperature sections of the water temperature or the environment temperature.
Example 2
The embodiment of the invention also provides a control method for the steam generation stage in the automatic cleaning process of the range hood, as shown in fig. 2, the method is realized by the following steps:
step 201: the water pump respectively corresponds to a working period corresponding to a third water temperature or a third environment temperature and a working period corresponding to a fourth water temperature or a fourth environment temperature in advance in fixed working time;
specifically, when the washing function is started, the detected temperature is T by detecting the water temperature of the water suction port of the water pump or the temperature of the external environment. In the steam generation stage, the working period of the water pump is t0The total working time t of the water pump in the steam generation stage and the working time of each fixed working period of the water pump are t1The water temperature or the environment temperature is T, and the lower limit value of the water temperature or the environment temperature interval used for adjusting the working time of the water pump is T0The corresponding working time of the water pump is t2(ii) a Upper limit value of T1The working time of the corresponding water pump is t3。
Step 202: determining a linear function or a piecewise function according to a working period corresponding to the third water temperature or the third environment temperature and a working period corresponding to the fourth water temperature or the fourth environment temperature;
specifically, the working time of each period of the fixed water pump is t1Determining the water or ambient temperature T0The time corresponding to the working period of the water pump is t4Determining the water or ambient temperature T1Time correspondingThe working cycle of the water pump is t5Determining a linear function or a piecewise function according to the two groups of parameters, wherein the linear function can determine the working period of the water pump as t0＝k1T+b1Wherein k is1And b1Is a fixed value determined according to the two groups of parameters, wherein the form of the piecewise function can be determined according to actual test data at the water temperature or the environment temperature T0To T1Determining the working period t of the water pump in sections within the range0。
Or determining piecewise functions of working cycles adopted in different temperature intervals according to the working cycle corresponding to the third water temperature or the third environment temperature of the water suction port of the water pump and the working cycle corresponding to the fourth water temperature or the fourth environment temperature
Wherein T is the working period, T is the current water temperature or the ambient temperature of the water suction port of the water pump, and T0、T1……TnIs a fixed temperature value, t0、t1……tnIs the fixed working time of the corresponding temperature interval.
Step 203: and in the steam generation stage of the automatic cleaning of the range hood, determining the working period corresponding to the current water temperature or the ambient temperature of the water suction port of the water pump according to the piecewise function or the piecewise function in the linear function.
Specifically, in the steam generation phase of the automatic cleaning of the range hood, the sum of the working time of all the working periods is a fixed value.
When the current water temperature or the ambient temperature of the water pump water suction port rises, the working period of the water pump is correspondingly increased, and when the current water temperature or the ambient temperature of the water pump water suction port falls, the working period of the water pump is correspondingly reduced.
For example, in an environment with an ambient temperature of 25 ℃, by testing water with different temperatures at the water suction port of the water pump, it is found that the water suction capacity of the water pump is increased during the process of increasing the water temperature, and the data is as follows:
from the data in the above table, it can be seen that when the water temperature is 5 ℃, the flow rate of the water pump is 780mL/min, and when the water temperature is 40 ℃, the flow rate of the water pump is 930mL/min, the change ratio reaches [ (930-780)/780] × 100% > -19.2%, and the change rate approaches 20%. In actual life, the water temperature for cleaning is generally between 5 ℃ and 40 ℃, the characteristic that the water absorption temperature is between 5 ℃ and 40 ℃ during cleaning is mainly researched, the treatment is carried out according to the parameter of 5 ℃ when the temperature is less than 5 ℃, and the treatment is carried out according to the parameter of 40 ℃ when the temperature is more than 40 ℃.
The working time of each period of the fixed water pump is t1Setting the working period of the water pump corresponding to the water temperature or the environment temperature of 5 ℃ as t 250ms43700ms, the corresponding water pump working period is t when the water temperature or the environment temperature is 40 DEG C44450ms, then the two sets of values can be used:
linear function of first order: the working period of the water pump is t0(150/7) T +3593 ≈ 22T +3593 in milliseconds, when T < 5 ℃, T03700ms, T > 40 deg.C04450ms, namely when the water temperature or the environment temperature is less than 5 ℃, the working period of the water pump is fixed to 3700ms, when the water temperature or the environment temperature is more than 40 ℃, the working period of the water pump is fixed to 4450ms, and when the temperature is between 50 ℃ and 40 ℃, the working time of the water pump is calculated by a linear function.
Piecewise function mode:
the unit is ms, namely different temperature sections of water temperature or environment temperature, and the working cycle of the water pump adopts different fixed time.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (9)
1. A control method for a steam generation stage in an automatic cleaning process of a range hood is characterized by comprising the following steps: determining a linear function or a piecewise function according to the working time corresponding to the first water temperature or the first environment temperature and the working time corresponding to the second water temperature or the second environment temperature respectively in a fixed working period by the water pump, and determining the working time corresponding to the current water temperature or the environment temperature of the water suction port of the water pump according to the linear function or the piecewise function in the steam generation stage of the automatic cleaning of the range hood.
2. The method for controlling the steam generation stage in the automatic cleaning process of the range hood according to claim 1, wherein the linear function or the piecewise function is determined according to the working time of the water pump corresponding to the first water temperature or the first environment temperature and the working time of the water pump corresponding to the second water temperature or the second environment temperature respectively in a fixed working period, and specifically comprises: determining a linear function t-k according to the working time corresponding to the first water temperature or the first environment temperature of the water suction port of the water pump and the working time corresponding to the second water temperature or the second environment temperature0T+b0Wherein k is0And b0The working time is a fixed value and is calculated and determined by the working time corresponding to the first water temperature or the first environment temperature and the working time corresponding to the second water temperature or the second environment temperature, T is the working time in each fixed working period, and T is the water temperature or the environment temperature of the water suction port of the water pump.
3. The method for controlling the steam generation stage in the automatic cleaning process of the range hood according to claim 1, wherein the step function is determined according to the working time of the water pump corresponding to the first water temperature or the first environmental temperature and the working time of the water pump corresponding to the second water temperature or the second environmental temperature respectively in a fixed working period, and specifically comprises the following steps: determining that piecewise functions with fixed working cycles are adopted in different temperature intervals according to the working time corresponding to the first water temperature or the first environment temperature of the water suction port of the water pump and the working time corresponding to the second water temperature or the second environment temperature
Where t is the work in each fixed work cycleTime T is the current water temperature or the ambient temperature of the water suction port of the water pump, T0、T1……TnIs a fixed temperature value, t0、t1……tnIs the fixed working time of the corresponding temperature interval.
4. The method for controlling the steam generation stage in the automatic cleaning process of the range hood according to any one of claims 1 to 3, wherein the determining the working time corresponding to the current water temperature or the ambient temperature of the water suction port of the water pump according to the linear function or the piecewise function is specifically as follows: when the current water temperature or the ambient temperature of the water suction port of the water pump is increased, the working time of the water pump in the fixed working period is correspondingly reduced, and when the current water temperature or the ambient temperature of the water suction port of the water pump is reduced, the working time of the water pump in the fixed working period is correspondingly increased.
5. A control method for a steam generation stage in an automatic cleaning process of a range hood is characterized by comprising the following steps: and determining a linear function or a piecewise function according to a working period corresponding to the third water temperature or the third environment temperature and a working period corresponding to the fourth water temperature or the fourth environment temperature respectively in advance by the water pump in a fixed working time, and determining a working period corresponding to the current water temperature or the environment temperature of a water suction port of the water pump according to the linear function or the piecewise function in a steam generation stage of automatic cleaning of the range hood.
6. The method for controlling the steam generation stage in the automatic cleaning process of the range hood according to claim 5, wherein the linear function or the piecewise function is determined according to the working period corresponding to the third water temperature or the third environmental temperature and the working period corresponding to the fourth water temperature or the fourth environmental temperature respectively with the fixed working time of the water pump in advance, and specifically comprises: determining a linear function t according to the working period corresponding to the third water temperature or the third environment temperature of the water suction port of the water pump and the working period corresponding to the fourth water temperature or the fourth environment temperature0＝k0T+b0Wherein k is0And b0Is a fixed value and is calculated and determined by the working time corresponding to the third water temperature or the third environment temperature and the working time corresponding to the fourth water temperature or the fourth environment temperature, t0In the working period, T is the water temperature or the environment temperature of the water suction port of the water pump.
7. The method for controlling the steam generation stage in the automatic cleaning process of the range hood according to claim 5, wherein the linear function or the piecewise function is determined according to the working period corresponding to the third water temperature or the third environmental temperature and the working period corresponding to the fourth water temperature or the fourth environmental temperature respectively with the fixed working time of the water pump in advance, and specifically comprises: determining piecewise functions of working cycles adopted in different temperature intervals according to the working cycle corresponding to the third water temperature or the third environment temperature and the working cycle corresponding to the fourth water temperature or the fourth environment temperature of the water suction port of the water pump
Wherein T is the working period, T is the current water temperature or the ambient temperature of the water suction port of the water pump, and T0、T1……TnIs a fixed temperature value, t0、t1……tnIs the fixed working time of the corresponding temperature interval.
8. The method for controlling the steam generation stage in the automatic cleaning process of the range hood according to any one of claims 5 to 7, wherein in the steam generation stage of the automatic cleaning of the range hood, the sum of the working time of all the working cycles is a fixed value.
9. The method for controlling the steam generation stage in the automatic cleaning process of the range hood according to claim 8, wherein the determining the working period corresponding to the current water temperature or the ambient temperature of the water suction port of the water pump according to the linear function or the piecewise function specifically comprises: when the current water temperature or the ambient temperature of the water pump water suction port rises, the working period of the water pump is correspondingly increased, and when the current water temperature or the ambient temperature of the water pump water suction port falls, the working period of the water pump is correspondingly reduced.
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| AU2000243028A1 (en) * | 2000-04-25 | 2001-11-07 | Gabriel Sylvestre | Method for continuously cleaning and removing grease from kitchen extraction circuits and for neutralising odours at the outlet of exhaust ducts |
| US20140069414A1 (en) * | 2012-09-10 | 2014-03-13 | Hsiao-Ping Hung | Range hood of vapor-cleaning type |
| CN204730287U (en) * | 2015-04-29 | 2015-10-28 | 华帝股份有限公司 | Automatic cleaning control device of range hood |
| CN105299725B (en) * | 2015-12-06 | 2018-06-26 | 广东万和新电气股份有限公司 | Smoke machine and its water system and control method |
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