Method for electrostatic fume removal and control method for fume extractor

Abstract

The application discloses a static oil fume removing method and an oil fume remover control method, which comprises the following steps: S1, obtaining the impedance Z of the static oil fume removing mechanism; S2, comparing the impedance Z with a plurality of preset impedance intervals, wherein the plurality of impedance intervals correspond to a plurality of driving gears of the vibration mechanism respectively, and the greater the impedance of the impedance interval is, the higher the corresponding driving gear is; when the impedance Z is located in the corresponding impedance interval, the control mechanism controls the vibration mechanism on the static oil fume removing mechanism to vibrate at the corresponding driving gear. Through real-time monitoring and comparison of the impedance of the static oil fume removing mechanism, the driving gear of the vibration mechanism is automatically adjusted; the more the oil fume particles are, the greater the impedance is, and the higher the driving gear is; on the contrary, the smaller the impedance is, 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 condition, so that the efficiency of the static oil fume removing is improved.

Description

Technical Field

[0001] This invention relates to the field of kitchenware, specifically to an electrostatic oil fume removal method and a control method for a range hood. Background Technology

[0002] A range hood is a device used to absorb and remove cooking fumes. It typically uses a motor to draw the fumes into a fume duct, but the fumes need to be purified before being discharged. Existing range hoods are equipped with electrostatic precipitators, but after a period of use, excessive accumulation of oil particles reduces their absorption capacity. This necessitates cleaning the oil particles adhering to the electrode plates of the electrostatic precipitator. While vibration mechanisms are commonly used to remove these particles, the cleaning effect is often unsatisfactory and fails to meet users' needs for effective fume removal. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect of poor electrostatic oil fume removal effect of existing range hoods, and to provide an electrostatic oil fume removal method.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution: an electrostatic oil fume removal method, comprising the following steps:

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

[0006] S2. Compare the impedance Z with multiple preset impedance ranges, where the multiple impedance ranges correspond to multiple drive levels of the vibration mechanism. The larger the impedance of the impedance range, the higher the corresponding drive level. When the impedance Z is within the corresponding impedance range, the control mechanism controls the vibration mechanism located on the electrostatic oil fume removal mechanism to vibrate at the corresponding drive level.

[0007] In this solution, the impedance of the electrostatic grease removal mechanism is monitored and compared in real time, and the drive level of the vibration mechanism is automatically adjusted. When there are more oil fume particles, the impedance is higher and the drive level is higher. Conversely, when the impedance is lower, there are fewer oil fume particles and the drive level is lower. This allows the vibration frequency and amplitude of the vibration mechanism to adapt to the current oil fume emission situation, thereby improving the efficiency of electrostatic grease removal and resulting in better electrostatic grease removal effect. Moreover, by automatically adjusting the vibration drive level, the energy consumption of the vibration mechanism can be minimized, thereby saving energy and reducing operating costs.

[0008] Preferably, the electrostatic 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 fume removal mechanism specifically includes step S11: obtaining the voltage V across the sampling resistor. R Impedance Z = (VV) R ) / (VR / R).

[0009] In this scheme, the voltage across the sampling resistor is collected and substituted into the formula Z=(VV R ) / (V R The impedance value of the electrostatic oil fume removal mechanism can be quickly and accurately obtained by calculation in / R), thereby realizing real-time monitoring and automatic adjustment of the drive gear of the vibration mechanism.

[0010] Preferably, the maximum impedance of the preset multiple impedance ranges is denoted as Z. m Step S2 includes the following steps:

[0011] S21, When Z≥Z m At that time, the vibration mechanism is controlled to vibrate at the maximum drive setting for a first preset time;

[0012] S22. Repeat step S21 N times;

[0013] S23. Obtain the impedance Z of the electrostatic fume removal mechanism. If Z ≥ Z m If so, a reminder will be output.

[0014] In this scheme, after vibration at the maximum setting, Z≥Z is still satisfied. m This indicates that there are too many oil fume particles in the electrostatic grease removal mechanism, which cannot be shaken off by the vibration mechanism. In this case, the user is reminded to manually clean or replace the electrostatic grease removal mechanism to ensure that the purification effect of the electrostatic grease removal machine is always at its best and improve its reliability.

[0015] Preferably, the vibration mode 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 better remove oil fume particles from the electrostatic oil fume removal mechanism, improve purification efficiency, reduce energy consumption, and lower the operating cost of the range hood.

[0017] Preferably, the intermittent vibration includes multiple vibrational portions and multiple intermittent portions, wherein the vibrational portions and the intermittent portions are performed sequentially at intervals, and the duration of each vibrational portion and each intermittent portion is equal.

[0018] In this solution, the duration of multiple continuous vibration sections and intermittent sections is the same, which makes it easier to control the frequency and duration of vibration, making the vibration more precise and stable, the cleaning more even, avoiding over-cleaning or under-cleaning of local areas, and improving cleaning efficiency and quality.

[0019] Preferably, the intermittent vibration includes multiple vibration parts and multiple intermittent parts, the vibration parts and the intermittent parts are performed sequentially at intervals, and the higher the drive 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 this solution, the ratio or difference between the duration of each vibration part and the duration of each intermittent part is adjusted according to different drive levels of the vibration mechanism to achieve different degrees of cleaning effect. Specifically, when the drive level 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; while when the drive level 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, thus 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, making the vibration of the vibration mechanism smoother and facilitating continuous cleaning; the square wave can make the vibration mechanism respond more quickly. During vibration, the amplitude of the vibration mechanism remains constant for a fixed period of time, and then suddenly changes to another fixed value, which has the characteristic of rapid switching and facilitates rapid cleaning; the sawtooth wave vibration can clean quickly and gradually reduce the vibration intensity. The amplitude of the vibration mechanism gradually rises for a fixed period of time, and then suddenly drops to another fixed value, which has the characteristics of rapid rise and slow fall, making the penetration of the vibration mechanism stronger.

[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 sequentially at intervals, and the intermittent parts of each vibration mechanism are staggered from the intermittent parts of other vibration mechanisms.

[0024] In this solution, the vibration times of each vibration mechanism are staggered, thereby generating more vibration force within the same time period and enhancing the cleaning effect. Specifically, when the number of vibration mechanisms increases, more vibration force can be generated within the same time period, improving cleaning efficiency. By staggering the intermittent parts of each vibration mechanism with the intermittent parts of other vibration mechanisms, the overlap of vibration force can be avoided, while maximizing the effective range of vibration force and improving the cleaning effect.

[0025] This invention discloses a control method for a range hood, which implements the electrostatic fume removal method described above when the range hood is started and when it is turned off.

[0026] In this solution, an electrostatic fume removal method will be used during both the start-up and shutdown of the range hood to achieve efficient purification of the fumes. Specifically, during the start-up process, the electrostatic fume removal method can begin operating immediately after the range hood is turned on to ensure that the fumes are purified as much as possible before entering the exhaust duct. During the shutdown process, the electrostatic fume removal method can continue to run for a period of time after the range hood has stopped operating to ensure that any residual fumes inside the range hood are 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 a third preset time, and the second preset time and the third preset time are equal.

[0029] In this solution, by ensuring that the vibration time of the vibration mechanism is equal during the start-up and shutdown of the range hood, it is guaranteed that the vibration mechanism can fully exert its electrostatic oil fume removal function during both the start-up and shutdown processes, achieving the best cleaning effect, while avoiding the impact of excessively long or short vibration time on the equipment's lifespan and cleaning effect.

[0030] The positive and progressive effects of this invention are as follows: By real-time monitoring and comparison of the impedance of the electrostatic oil fume removal mechanism, the drive level of the vibration mechanism is automatically adjusted. When there are more oil fume particles, the impedance is greater and the drive level is higher. Conversely, when the impedance is smaller, there are fewer oil fume particles and the drive level is lower. This allows the vibration frequency and amplitude of the vibration mechanism to adapt to the current oil fume emission situation, thereby improving the efficiency of electrostatic oil fume removal and achieving a better electrostatic oil fume removal effect. Moreover, by automatically adjusting the vibration drive level, the energy consumption of the vibration mechanism can be minimized, thereby saving energy and reducing operating costs. Attached Figure Description

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

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

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

[0034] Explanation of reference numerals in the attached figures

[0035] Electrostatic oil fume removal mechanism 1

[0036] Drive power supply 2

[0037] Sampling resistor 3

[0038] Vibration mechanism 4 Detailed Implementation

[0039] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0040] like Figures 1-3 As shown, this embodiment discloses an electrostatic oil fume removal method, wherein the range hood using this method includes 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 includes the following steps:

[0042] S1. Obtain the impedance Z of the electrostatic oil fume removal mechanism 1;

[0043] S2. Compare the impedance Z with multiple preset impedance ranges, where the multiple impedance ranges correspond to multiple drive positions of the vibration mechanism 4, and the larger the impedance of the impedance range, the higher the corresponding drive position. When the impedance Z is within the corresponding impedance range, the control mechanism controls the vibration mechanism 4 located on the electrostatic oil fume removal mechanism 1 to vibrate at the corresponding drive position.

[0044] In this embodiment, by real-time monitoring and comparison of the impedance of the electrostatic grease removal mechanism 1, the drive level of the vibration mechanism 4 is automatically adjusted. The more oil fume particles there are, the greater the impedance, and the higher the drive level; conversely, the smaller the impedance, the fewer the oil fume particles, and the lower the drive level. This allows the vibration frequency and amplitude of the vibration mechanism 4 to adapt to the current oil fume emission situation, thereby improving the efficiency of electrostatic grease removal and resulting in a better electrostatic grease removal effect. Furthermore, by automatically adjusting the vibration drive level, the energy consumption of the vibration mechanism 4 can be minimized, thus saving energy and reducing operating costs. In this embodiment, the vibration mechanism 4 specifically uses a vibration motor to achieve small-amplitude vibration. By distributing vibration motors at multiple points on the electrostatic grease removal mechanism 1, the purpose of comprehensively driving the electrostatic grease removal mechanism 1 to vibrate is achieved.

[0045] Specifically, the electrostatic fume removal mechanism 1 is connected in series with the sampling resistor 3, the resistance value of the sampling resistor 3 is R, and the voltage of the driving power supply 2 is V. In step S1, obtaining the impedance Z of the electrostatic fume removal mechanism 1 specifically includes step S11: obtaining the voltage V across the sampling resistor 3. R Impedance Z = (VV) R ) / (V R / R). By collecting the voltage across sampling resistor 3 and substituting it into the formula Z=(VV R ) / (V RThe impedance value of the electrostatic oil fume removal mechanism 1 can be quickly and accurately obtained by performing calculations in the / R) (metered range), thereby enabling real-time monitoring and automatic adjustment of the drive level of the vibration mechanism 4. Of course, in other alternative embodiments, an external impedance measuring instrument such as a multimeter or 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 ranges is denoted as Z. m Step S2 includes the following steps:

[0047] S21, When Z≥Z m At that time, the vibration mechanism 4 is controlled to vibrate at the maximum drive level for a first preset time;

[0048] S22. Repeat step S21 N times;

[0049] S23. Obtain the impedance Z of the electrostatic fume removal mechanism 1. If Z ≥ Z m If so, a reminder will be output.

[0050] In this embodiment, the first preset time is 1 minute, and the number of cycles is 1, meaning that after two vibrations at the maximum drive level, Z≥Z is still satisfied. m This indicates that there are too many oil fume particles in the electrostatic grease removal mechanism 1, which cannot be shaken off by the vibration mechanism 4. The system reminds the user to manually clean or replace the electrostatic grease removal mechanism 1, ensuring that the purification effect of the electrostatic grease removal machine is always at its best and 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, etc., according to the user's needs.

[0051] Specifically, in step S2, the vibration mechanism 4 exhibits intermittent vibration. Intermittent vibration effectively avoids excessive wear and damage to the equipment caused by prolonged continuous vibration. It also better removes oil fume particles from the electrostatic grease removal mechanism 1, improving purification efficiency and reducing energy consumption, thus lowering the operating cost of the range hood. Of course, in other alternative embodiments, the vibration mechanism 4 can also vibrate continuously to remove oil fume particles.

[0052] Specifically, intermittent vibration includes multiple vibration sections and multiple interval sections. The vibration sections and interval sections are performed sequentially and at intervals. The duration of each vibration section and each interval section is equal, that is, the duration of each vibration and each interval is equal. The fact that multiple consecutive vibration sections and interval sections have the same duration makes it easier to control the frequency and duration of vibration, making the vibration more precise and stable, making the cleaning more balanced, avoiding over-cleaning or under-cleaning of local areas, and improving cleaning efficiency and cleaning quality.

[0053] Of course, in other preferred embodiments, intermittent vibration can also employ different durations for the vibrating and intermittent portions. That is, the higher the drive level of the vibration mechanism 4, the greater the ratio or difference between the duration of each vibrating portion and the duration of each intermittent portion. By adjusting the ratio or difference between the duration of each vibrating portion and the duration of each intermittent portion according to different drive levels of the vibration mechanism 4, different degrees of cleaning effect can be achieved. Specifically, when the drive level of the vibration mechanism 4 is low, the ratio or difference between the duration of each vibrating portion and the duration of each intermittent portion is small, resulting in a relatively low cleaning effect; while when the drive level of the vibration mechanism 4 is high, the ratio or difference between the duration of each vibrating portion and the duration of each intermittent portion is large, resulting in a relatively high cleaning effect, thus better adapting 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. A sine wave has a continuous and smooth curve, which can produce a continuous vibration effect, making the vibration of the vibration mechanism 4 smoother and facilitating continuous cleaning. A square wave can make the vibration mechanism 4 respond more quickly. During vibration, the amplitude of the vibration mechanism 4 remains constant for a fixed period of time and then suddenly changes to another fixed value, which has the characteristic of rapid switching and facilitates rapid cleaning. Sawtooth wave vibration can clean quickly and gradually reduce the vibration intensity. The amplitude of the vibration mechanism 4 gradually increases for a fixed period of time and then suddenly decreases to another fixed value, which has the characteristics of rapid rise and slow fall, making the penetration of the vibration mechanism 4 stronger.

[0055] Specifically, there are multiple vibration mechanisms 4. The intermittent vibration includes multiple vibration sections and multiple intermittent sections, which are performed sequentially and at intervals. The intermittent sections of each vibration mechanism 4 are staggered from the intermittent sections of other vibration mechanisms 4. This staggers the vibration times of each vibration mechanism 4, thereby generating more vibration force within the same time period and enhancing the cleaning effect. Specifically, when the number of vibration mechanisms 4 increases, more vibration force can be generated within the same time period, improving cleaning efficiency. By staggering the intermittent sections of each vibration mechanism 4 from the intermittent sections of other vibration mechanisms 4, overlap of vibration force can be avoided, while maximizing the effective range of vibration force and improving 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, such as Figure 3As shown, the vibration mechanism 4 is in the form of a motor, and there are four vibration mechanisms 4 in total. The drive power supply 2 provides 6KV DC power to the electrostatic oil fume removal mechanism 1. 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 drive power supply 2 can carry is... min =6KV / 1.25mA=4.8MΩ, the impedance of the electrostatic fume removal mechanism 1 from its initial operation to the point where cleaning reminders are needed is divided into N intervals, with the interval division points being Z1, Z2...Z... N When Z min When Z ≤ 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 fume removal method described above is implemented both when the range hood is started and when it is turned off. By running the electrostatic fume removal method when the range hood is started and turned off, efficient purification of fumes is achieved. Specifically, in the step of starting the range hood, the electrostatic fume removal method can start running immediately after the range hood is started to ensure that the fumes are purified as much as possible before entering the exhaust duct; in the step of turning off the range hood, the electrostatic fume removal method can continue to run for a period of time after the range hood stops running to ensure that the residual fumes in the range hood are completely purified.

[0058] Specifically, when the range hood is turned on, 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 and the third preset time are equal.

[0059] In this embodiment, both the first preset time and the second preset time are 30 seconds. This time can also be set to other times depending on the scenario. By ensuring that the vibration time of the vibration mechanism 4 is equal during the start-up and shut-down of the range hood, it is ensured that the vibration mechanism 4 can fully exert its electrostatic fume removal function during both the start-up and shut-down processes, achieving the best cleaning effect. At the same time, excessively long or short vibration times are avoided from affecting the lifespan 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] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A method for electrostatic oil fume removal, characterized in that, It includes the following steps: S1. Obtain the impedance Z of the electrostatic oil fume removal mechanism; S2. Compare the impedance Z with multiple preset impedance ranges, where the multiple impedance ranges correspond to multiple drive levels of the vibration mechanism. The larger the impedance of the impedance range, the higher the corresponding drive level. When the impedance Z is within the corresponding impedance range, the control mechanism controls the vibration mechanism located on the electrostatic oil fume removal mechanism to vibrate at the corresponding drive level. The maximum impedance of the preset multiple impedance ranges is denoted as Zm. Step S2 includes the following steps: S21. When Z≥Zm, control the vibration mechanism to vibrate at the maximum drive setting for a first preset time; S22. Repeat step S21 N times; S23. Obtain the impedance Z of the electrostatic fume removal mechanism. If Z≥Zm is still satisfied, then output a reminder.

2. The electrostatic oil fume removal method as described in claim 1, characterized in that, The electrostatic grease removal mechanism is connected in series with a sampling resistor, the resistance value of which is R, and the voltage of the driving power supply is V. In step S1, obtaining the impedance Z of the electrostatic grease removal mechanism specifically includes step S11: obtaining the voltage V across the sampling resistor. R Impedance Z = (VV) R ) / (V R / R).

3. The electrostatic oil fume removal method as described in claim 1, characterized in that, The vibration mode of the vibration mechanism in step S2 includes intermittent vibration.

4. The electrostatic oil fume removal method as described in claim 3, characterized in that, The intermittent vibration includes multiple vibrational parts and multiple intermittent parts, which are performed sequentially and at intervals. The duration of each vibrational part is equal to the duration of each intermittent part.

5. The electrostatic oil fume removal method as described in claim 3, characterized in that, The intermittent vibration includes multiple vibration parts and multiple intermittent parts, which are performed sequentially and at intervals. The higher the drive 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.

6. The electrostatic oil fume removal method as described in claim 3, characterized in that, The waveform of the intermittent vibration is a sine wave, a square wave, or a sawtooth wave.

7. The electrostatic oil fume removal method as described in claim 3, characterized in that, The number of vibration mechanisms is multiple, and the intermittent vibration includes multiple vibration parts and multiple intermittent parts. The vibration parts and the intermittent parts are performed sequentially at intervals, and the intermittent parts of each vibration mechanism are staggered from the intermittent parts of other vibration mechanisms.

8. A control method for a range hood, characterized in that, The electrostatic fume removal method as described in any one of claims 1-7 is performed both when starting and when turning off the range hood.

9. The control method for a range hood as described in claim 8, characterized in that, When the range hood is started, the vibration time of the vibration mechanism is the second preset time; When the range hood is turned off, the vibration time of the vibration mechanism is a third preset time, and the second preset time and the third preset time are equal.

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