Electrostatic lampblack removal method and control method of range hood

Abstract

The invention discloses an electrostatic oil smoke removal method and a control method of a range hood. The method comprises the following steps: S1, acquiring impedance Z of an electrostatic oil smoke removal mechanism; s2, the impedance Z is compared with a plurality of preset impedance intervals, the impedance intervals correspond to a plurality of driving gears of the vibration mechanism respectively, the larger the impedance of the impedance intervals is, the higher the corresponding driving gears are, and when the impedance Z is located in the corresponding impedance interval, the driving gears of the vibration mechanism are driven by the corresponding driving gears. And the control mechanism controls the vibration mechanism on the electrostatic oil smoke removal mechanism to vibrate at the corresponding driving gear. The impedance of the electrostatic lampblack removal mechanism is monitored and compared in real time, the driving gear of the vibration mechanism is automatically adjusted, the more lampblack particles are, the larger the impedance is and the higher the driving gear is, and on the contrary, the smaller the impedance is, the fewer lampblack particles are and the lower the driving gear is, so that the vibration frequency and amplitude of the vibration mechanism can adapt to the current lampblack emission condition, and the lampblack removal efficiency is improved. Therefore, the electrostatic lampblack removal efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of kitchenware, and in particular to an electrostatic oil fume removal method and a range hood control method. Background Art

[0002] A range hood is a device used to absorb and remove the oil smoke generated during cooking. Usually, a motor is used to suck the oil smoke into the oil smoke passage, but the oil smoke needs to be purified before it is discharged. Existing range hoods are equipped with an electrostatic oil fume removal device, but after a period of use, too many oil fume particles are adsorbed, which will lead to a decrease in adsorption capacity. It is necessary to clean the oil fume particles attached to the electrode plates of the electrostatic oil fume removal device. Usually, a vibration mechanism is used to remove the oil fume particles in the form of vibration, but the cleaning effect is not ideal and cannot meet the user's demand for oil fume cleaning. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defect that the electrostatic oil fume removal effect of the range hood in the prior art is not good, and to provide an electrostatic oil fume removal method.

[0004] The present invention solves the above technical problems through the following technical solutions: an electrostatic oil fume removal method, which comprises the following steps:

[0005] S1. Obtain the impedance Z of the electrostatic fume removal mechanism;

[0006] S2. Compare the impedance Z with a plurality of preset impedance intervals, wherein the plurality of impedance intervals respectively correspond to a plurality of driving gears of the vibration mechanism, and the greater the impedance of the impedance interval, the higher the corresponding driving gear. When the impedance Z is within the corresponding impedance interval, the control mechanism controls the vibration mechanism located on the electrostatic fume removal mechanism to vibrate at the corresponding driving gear.

[0007] In this scheme, the impedance of the electrostatic oil fume removal mechanism is monitored and compared in real time, and the driving gear of the vibration mechanism is automatically adjusted. When the more oil fume particles there are, the greater the impedance is, and the higher the driving gear is. On the contrary, when the impedance is smaller, the fewer the oil fume particles are, and the lower the driving gear is, the vibration frequency and amplitude of the vibration mechanism can be adapted to the current oil fume emission situation, thereby improving the efficiency of electrostatic oil fume removal and achieving better electrostatic oil fume removal effect. Moreover, by automatically adjusting the vibration driving gear, the energy consumption of the vibration mechanism can be minimized, thereby saving energy and reducing operating costs.

[0008] Preferably, the electrostatic oil fume removal mechanism is connected in series with a sampling resistor, the resistance value of the sampling resistor is R, and the voltage of the driving power supply is V. In step S1, obtaining the impedance Z of the electrostatic oil fume removal mechanism specifically includes step S11: obtaining the voltage V at both ends of the sampling resistor R , impedance Z = (6-V R ) / (VR / R).

[0009] In this solution, the voltage across the sampling resistor is collected and substituted into the formula Z = (6-V R ) / (V R / R) is used for calculation, so as to quickly and accurately obtain the impedance value of the electrostatic fume removal mechanism, thereby realizing real-time monitoring and automatic adjustment of the driving gear of the vibration mechanism.

[0010] Preferably, the maximum impedance of the preset multiple impedance intervals is recorded as Z m , step S2 comprises the steps of:

[0011] S21, when Z ≥ Z m When the vibration mechanism is controlled to vibrate at the maximum driving gear for a first preset time;

[0012] S22, looping and executing step S21 N times;

[0013] S23, obtain the impedance Z of the electrostatic oil fume removal mechanism, if Z ≥ Z m , then output a reminder.

[0014] In this solution, after vibrating at the maximum gear, and still satisfying Z ≥ Z m , indicating that there are too many oil fume particles in the electrostatic oil fume removal mechanism, and the vibration mechanism cannot shake them off. By reminding the user to manually clean or replace the electrostatic oil fume removal mechanism, it can ensure that the purification effect of the electrostatic oil fume removal machine is always in the best condition and improve reliability.

[0015] Preferably, the vibration form of the vibration mechanism in step S2 includes intermittent vibration.

[0016] In this solution, intermittent vibration can effectively avoid excessive wear and damage to the equipment caused by long-term continuous vibration. At the same time, it can also better remove the oil fume particles on the electrostatic oil fume removal mechanism, improve the purification efficiency, reduce energy consumption, and reduce the cost of using the range hood.

[0017] Preferably, the intermittent vibration includes a plurality of vibration parts and a plurality of intermittent parts, the vibration parts and the intermittent parts are performed in sequence at intervals, and the duration of each vibration part and each intermittent part is equal.

[0018] In this solution, the duration of multiple continuous vibration parts and intermittent parts is the same, which can make it easier to control the frequency and duration of vibration, make the vibration more precise and stable, make the cleaning more balanced, avoid excessive or insufficient cleaning of local areas, and improve cleaning efficiency and cleaning quality.

[0019] Preferably, the intermittent vibration includes a plurality of vibration parts and a plurality of intermittent parts, and the vibration parts and the intermittent parts are performed in sequence at intervals. The greater the driving gear of the vibration mechanism, the greater the ratio or difference between the duration of each vibration part and the duration of each intermittent part.

[0020] In the present solution, the ratio or difference between the duration of each vibration part and the duration of each intermittent part is adjusted according to different driving gears of the vibration mechanism to achieve different degrees of cleaning effects. Specifically, when the driving gear of the vibration mechanism is low, the ratio or difference between the duration of each vibration part and the duration of each intermittent part is small, and the cleaning effect is relatively low; and when the driving gear of the vibration mechanism is high, the ratio or difference between the duration of each vibration part and the duration of each intermittent part is large, and the cleaning effect is relatively high, thereby better adapting to the current oil fume emission situation.

[0021] Preferably, the waveform of the intermittent vibration is a sine wave, a square wave or a sawtooth wave.

[0022] In this scheme, the sine wave has a continuous and smooth curve, which can produce a continuous vibration effect, make the vibration of the vibration mechanism smoother, and facilitate continuous cleaning; the square wave can make the vibration mechanism respond more quickly. During vibration, the amplitude of the vibration mechanism remains unchanged within a fixed time period, and then suddenly changes to another fixed value. It has the characteristics of fast switching, which is convenient for fast cleaning; the sawtooth wave vibration can clean quickly and gradually weaken the vibration intensity. The amplitude of the vibration mechanism gradually increases within a fixed time period, and then suddenly drops to another fixed value. It has the characteristics of fast rise and slow fall, which makes the vibration mechanism more penetrating.

[0023] Preferably, there are multiple vibration mechanisms, and the intermittent vibration includes multiple vibration parts and multiple intermittent parts. The vibration parts and the intermittent parts are performed in sequence at intervals, and the intermittent parts of each vibration mechanism are staggered with the intermittent parts of other vibration mechanisms.

[0024] In this solution, the vibration moments of each vibration mechanism are staggered, thereby generating more vibration forces in the same time period and enhancing the cleaning effect. Specifically, when the number of vibration mechanisms increases, more vibration forces can be generated in the same time period to improve the cleaning efficiency. By staggering the intermittent part of each vibration mechanism with the intermittent part of other vibration mechanisms, overlapping of vibration forces can be avoided, while maximizing the range of action of the vibration forces and improving the cleaning effect.

[0025] The invention discloses a control method for a range hood, wherein the electrostatic fume removal method as described above is implemented both when the range hood is started and when the range hood is shut down.

[0026] In this scheme, the electrostatic oil fume removal method will be run during the process of starting the range hood and shutting down the range hood to achieve efficient purification of oil fume. Specifically, in the step of starting the range hood, the electrostatic oil fume removal method can start running immediately after the range hood is started to ensure that the oil fume is purified as much as possible before entering the exhaust duct; in the step of shutting down the range hood, the electrostatic oil fume removal method can continue to run for a period of time after the range hood stops running to ensure that the residual oil fume in the range hood is thoroughly purified.

[0027] Preferably, when the range hood is started, the vibration time of the vibration mechanism is a second preset time;

[0028] When the range hood is turned off, the vibration time of the vibration mechanism is the third preset time, and the second preset time is equal to the third preset time.

[0029] In this solution, by making the vibration time of the vibration mechanism in the steps of starting and shutting down the range hood equal, it is ensured that in the process of starting and shutting down the range hood, the vibration mechanism can fully play the role of electrostatic fume removal to achieve the best cleaning effect, while avoiding the impact of too long or too short vibration time on the life and cleaning effect of the equipment.

[0030] The positive progressive effect of the present invention is that by real-time monitoring and comparison of the impedance of the electrostatic oil fume removal mechanism, the driving gear of the vibration mechanism is automatically adjusted. When there are more oil fume particles, the greater the impedance is, and the higher the driving gear is. On the contrary, when the impedance is smaller, the fewer the oil fume particles are, and the lower the driving gear is, the vibration frequency and amplitude of the vibration mechanism can be adapted to the current oil fume emission situation, thereby improving the efficiency of electrostatic oil fume removal and achieving better electrostatic oil fume removal effect. Moreover, by automatically adjusting the vibration driving gear, the energy consumption of the vibration mechanism can be minimized, thereby saving energy and reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Flow chart (I) of the electrostatic oil fume removal method according to a preferred embodiment of the present invention.

[0032] Figure 2 Flow chart (II) of the electrostatic oil fume removal method according to a preferred embodiment of the present invention.

[0033] Figure 3 It is a structural schematic diagram of the electrostatic oil fume removal mechanism of a preferred embodiment of the present invention.

[0034] Description of Reference Numerals

[0035] Electrostatic fume removal mechanism 1

[0036] Driving power 2

[0037] Sampling resistor 3

[0038] Vibration mechanism 4 DETAILED DESCRIPTION

[0039] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0040] like Figure 1-Figure 3 As shown, this embodiment discloses an electrostatic oil fume removal method, wherein the range hood using this method comprises a driving power supply 2, an oil fume removal mechanism, a sampling resistor 3 and a vibration mechanism 4;

[0041] Specifically, the electrostatic fume removal method comprises the following steps:

[0042] S1, obtaining the impedance Z of the electrostatic oil fume removal mechanism 1;

[0043] S2. Compare the impedance Z with a plurality of preset impedance intervals, wherein the plurality of impedance intervals respectively correspond to a plurality of driving gears of the vibration mechanism 4, and the greater the impedance of the impedance interval, the higher the corresponding driving gear. When the impedance Z is within the corresponding impedance interval, the control mechanism controls the vibration mechanism 4 located on the electrostatic fume removal mechanism 1 to vibrate at the corresponding driving gear.

[0044] In this embodiment, the impedance of the electrostatic fume removal mechanism 1 is monitored and compared in real time, and the driving gear of the vibration mechanism 4 is automatically adjusted. When there are more fume particles, the impedance is greater and the driving gear is higher. On the contrary, when the impedance is smaller, the fume particles are fewer and the driving gear is lower. The vibration frequency and amplitude of the vibration mechanism 4 can be adapted to the current fume emission situation, thereby improving the efficiency of electrostatic fume removal, and the electrostatic fume removal effect is better. Moreover, by automatically adjusting the vibration drive gear, the energy consumption of the vibration mechanism 4 can be minimized, thereby saving energy and reducing operating costs. In this embodiment, the vibration mechanism 4 specifically uses a vibration motor to achieve the purpose of small-amplitude vibration. By arranging vibration motors at multiple points on the electrostatic fume removal mechanism 1, the purpose of fully driving the electrostatic fume removal mechanism 1 to vibrate is achieved.

[0045] Specifically, the electrostatic oil fume removal mechanism 1 is connected in series with the sampling resistor 3, the resistance value of the sampling resistor 3 is R, the voltage of the driving power supply 2 is V, and in step S1, obtaining the impedance Z of the electrostatic oil fume removal mechanism 1 specifically includes step S11: obtaining the voltage V across the sampling resistor 3 R , impedance Z = (6-V R ) / (V R / R). By collecting the voltage across the sampling resistor 3 and substituting it into the formula Z=(6-V R ) / (V R / R) is calculated, the impedance value of the electrostatic oil fume removal mechanism 1 can be quickly and accurately obtained, thereby achieving real-time monitoring and automatic adjustment of the driving gear of the vibration mechanism 4. Of course, in other alternative embodiments, an external impedance measuring instrument such as a multimeter or an LCR meter can also be connected to measure the impedance value of the electrostatic oil fume removal mechanism 1.

[0046] like Figure 2 As shown, the maximum impedance of the preset multiple impedance intervals is recorded as Z m , step S2 comprises the steps of:

[0047] S21, when Z ≥ Z m When the vibration mechanism 4 is controlled to vibrate at the maximum driving gear for a first preset time;

[0048] S22, looping and executing step S21 N times;

[0049] S23, obtain the impedance Z of the electrostatic oil fume removal mechanism 1, if Z≥Z m , then output a reminder.

[0050] In this embodiment, the first preset time is 1 minute, and the number of cycles is 1 time, that is, after two vibrations at the maximum drive gear, Z ≥ Z m , indicating that there are too many oil fume particles in the electrostatic oil fume removal mechanism 1, and the vibration mechanism 4 cannot shake them off. By reminding the user to manually clean or replace the electrostatic oil fume removal mechanism 1, the purification effect of the electrostatic oil fume removal machine can be ensured to be always in the best state, thereby improving reliability. Of course, in other alternative embodiments, the first preset time can be set to 2 minutes, 3 minutes, etc. as needed, and the number of cycles can also be set to 2 times, 3 times, or other numbers as needed according to the needs of the user scenario.

[0051] Specifically, the vibration form of the vibration mechanism 4 in step S2 includes intermittent vibration. Intermittent vibration can effectively avoid excessive wear and damage to the equipment caused by long-term continuous vibration, and can also better remove the oil fume particles on the electrostatic oil fume removal mechanism 1, improve the purification efficiency, and reduce energy consumption and reduce the cost of using the range hood. Of course, in other alternative embodiments, the vibration mechanism 4 can also vibrate continuously to remove the oil fume particles.

[0052] Specifically, intermittent vibration includes multiple vibration parts and multiple intermittent parts. The vibration parts and the intermittent parts are performed in sequence at intervals, and the duration of each vibration part and each intermittent part is equal, that is, each vibration and each intermittent time are equal. The time of multiple continuous vibration parts and intermittent parts is the same, which can make it easier to control the frequency and duration of vibration, make the vibration more precise and stable, make cleaning more balanced, avoid excessive or insufficient cleaning of local areas, and improve cleaning efficiency and cleaning quality.

[0053] Of course, in other preferred embodiments, intermittent vibration can also be in a manner where the duration of the vibration part and the intermittent part are different, that is, the greater the driving gear of the vibration mechanism 4, the greater the ratio or difference between the duration of each vibration part and the duration of each intermittent part. According to different driving gears of the vibration mechanism 4, the ratio or difference between the duration of each vibration part and the duration of each intermittent part is adjusted to achieve different degrees of cleaning effects. Specifically, when the driving gear of the vibration mechanism 4 is low, the ratio or difference between the duration of each vibration part and the duration of each intermittent part is small, and the cleaning effect is relatively low; and when the driving gear of the vibration mechanism 4 is high, the ratio or difference between the duration of each vibration part and the duration of each intermittent part is large, and the cleaning effect is relatively high, so that it can better adapt to the current oil fume emission situation.

[0054] Specifically, the waveform of the intermittent vibration is a sine wave, a square wave or a sawtooth wave. The sine wave has a continuous and smooth curve, which can produce a continuous vibration effect, and can make the vibration of the vibration mechanism 4 smoother, so as to facilitate continuous cleaning; the square wave can make the vibration mechanism 4 react more quickly. When vibrating, the amplitude of the vibration mechanism 4 remains unchanged within a fixed time period, and then suddenly changes to another fixed value, which has the characteristics of fast switching, so as to facilitate fast cleaning; the sawtooth wave vibration can clean quickly and gradually weaken the vibration intensity. The amplitude of the vibration mechanism 4 gradually rises within a fixed time period, and then suddenly drops to another fixed value, which has the characteristics of fast rise and slow fall, so that the penetration of the vibration mechanism 4 is stronger.

[0055] Specifically, the number of vibration mechanisms 4 is multiple, and the intermittent vibration includes multiple vibration parts and multiple intermittent parts. The vibration parts and the intermittent parts are performed in sequence at intervals, and the intermittent parts of each vibration mechanism 4 are staggered with the intermittent parts of other vibration mechanisms 4. The vibration moments between the vibration mechanisms 4 are staggered, so that more vibration forces are generated in the same time period, and the cleaning effect is enhanced. Specifically, when the number of vibration mechanisms 4 increases, more vibration forces can be generated in the same time period to improve the cleaning efficiency. By staggering the intermittent parts of each vibration mechanism 4 with the intermittent parts of other vibration mechanisms 4, the overlap of vibration forces can be avoided, and the range of action of the vibration forces can be maximized to improve the cleaning effect. Of course, in other alternative embodiments, the number of vibration mechanisms 4 can be one, and when there are multiple vibration mechanisms 4, they can also vibrate synchronously.

[0056] Specifically, in this embodiment, Figure 3As shown, the vibration mechanism 4 is in the form of a motor, the number of vibration mechanisms 4 is 4, the driving power supply 2 provides 6KV DC power to the electrostatic fume removal mechanism 1, and when the power supply is working, it can output a high voltage of 6KV and a maximum current of 1.25mA. The minimum electrostatic module impedance Z that the driving power supply 2 can carry is min =6KV / 1.25mA=4.8MΩ, the impedance of the electrostatic oil fume removal mechanism 1 from the initial operation to the need for cleaning reminder is divided into N intervals, and the division points of the intervals are Z1, Z2...Z N , when Z min When ≤Z<Z1, the control mechanism controls the vibration mechanism 4 to vibrate in the first gear; when Z1≤Z<Z2, the control mechanism controls the vibration mechanism 4 to vibrate in the second gear, and so on.

[0057] This embodiment also discloses a control method for a range hood. Specifically, the electrostatic oil fume removal method is implemented when the range hood is started and when the range hood is turned off. The electrostatic oil fume removal method is run when the range hood is started and when the range hood is turned off, so as to achieve efficient purification of oil fume. Specifically, in the step of starting the range hood, the electrostatic oil fume removal method can start running immediately after the range hood is started to ensure that the oil fume is purified as much as possible before entering the exhaust duct; in the step of turning off the range hood, the electrostatic oil fume removal method can continue to run for a period of time after the range hood stops running to ensure that the residual oil fume in the range hood is thoroughly purified.

[0058] Specifically, when the range hood is started, the vibration time of the vibration mechanism 4 is the second preset time, and when the range hood is turned off, the vibration time of the vibration mechanism 4 is the third preset time, and the second preset time is equal to the third preset time.

[0059] In this embodiment, the first preset time and the second preset time are both 30S, which can also be set to other times according to the scene requirements. By making the vibration time of the vibration mechanism 4 equal in the steps of starting and shutting down the range hood, it is ensured that in the process of starting and shutting down the range hood, the vibration mechanism 4 can fully play the role of electrostatic oil fume removal to achieve the best cleaning effect, while avoiding the effect of too long or too short vibration time on the life and cleaning effect of the equipment. Of course, in other alternative embodiments, the first preset time and the second preset time may not be equal.

[0060] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An electrostatic fume removal method, characterized in that: It includes the steps of: S1. Obtain the impedance Z of the electrostatic fume removal mechanism; S2. Compare the impedance Z with a plurality of preset impedance intervals, wherein the plurality of impedance intervals respectively correspond to a plurality of driving gears of the vibration mechanism, and the greater the impedance of the impedance interval, the higher the corresponding driving gear. When the impedance Z is within the corresponding impedance interval, the control mechanism controls the vibration mechanism located on the electrostatic fume removal mechanism to vibrate at the corresponding driving gear.

2. The electrostatic oil fume removal method according to claim 1, characterized in that: The electrostatic oil fume removal mechanism is connected in series with a sampling resistor, the resistance value of the sampling resistor is R, the voltage of the driving power supply is V, and in step S1, obtaining the impedance Z of the electrostatic oil fume removal mechanism specifically includes step S11: obtaining the voltage V at both ends of the sampling resistor R , impedance Z = (6-V R ) / (V R / R).

3. The electrostatic oil fume removal method according to claim 1, characterized in that: The maximum impedance of the preset multiple impedance intervals is recorded as Z m , step S2 comprises the steps of: S21, when Z ≥ Z m When the vibration mechanism is controlled to vibrate at the maximum driving gear for a first preset time; S22, looping and executing step S21 N times; S23, obtain the impedance Z of the electrostatic oil fume removal mechanism, if Z ≥ Z m , then output a reminder.

4. The electrostatic oil fume removal method according to claim 1, characterized in that: The vibration form of the vibration mechanism in step S2 includes intermittent vibration.

5. The electrostatic oil fume removal method according to claim 4, characterized in that: The intermittent vibration includes a plurality of vibration parts and a plurality of intermittent parts, the vibration parts and the intermittent parts are performed in sequence at intervals, and the duration of each vibration part is equal to the duration of each intermittent part.

6. The electrostatic oil fume removal method according to claim 4, characterized in that: The intermittent vibration includes a plurality of vibration parts and a plurality of intermittent parts, and the vibration parts and the intermittent parts are performed in sequence at intervals. The larger the driving gear of the vibration mechanism, the greater the ratio or difference between the duration of each vibration part and the duration of each intermittent part.

7. The electrostatic oil fume removal method according to claim 4, characterized in that: The waveform of the intermittent vibration is a sine wave, a square wave or a sawtooth wave.

8. The electrostatic oil fume removal method according to claim 4, characterized in that: There are multiple vibration mechanisms, and the intermittent vibration includes multiple vibration parts and multiple intermittent parts. The vibration parts and the intermittent parts are performed in sequence and at intervals, and the intermittent parts of each vibration mechanism are staggered with the intermittent parts of other vibration mechanisms.

9. A method for controlling a range hood, characterized in that: The electrostatic oil fume removal method as described in any one of claims 1 to 8 is implemented both when the range hood is started and when the range hood is turned off.

10. The control method of the range hood according to claim 9, characterized in that: When the range hood is started, the vibration time of the vibration mechanism is a second preset time; When the range hood is turned off, the vibration time of the vibration mechanism is the third preset time, and the second preset time is equal to the third preset time.

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