Oil smoke purification control method and control device of range hood, range hood and medium

Abstract

The embodiment of the invention discloses an oil smoke purification control method and device of a range hood, the range hood and a medium, the control method comprises the steps that firstly, the range hood is controlled to be started, a fan unit operates, then at least one first circulation period is executed, and the first circulation period comprises the steps that the first oil smoke concentration at a smoke inlet of the range hood is obtained in real time; after it is determined that the ion generation unit is started, the second oil smoke concentration at the smoke inlet of the draught fan is obtained in real time, whether the difference value of the first oil smoke concentration and the second oil smoke concentration meets the first preset difference value range or not is judged in real time, and when the difference value of the first oil smoke concentration and the second oil smoke concentration does not meet the first preset difference value range, the ion generation unit is started. And the temperature value and / or the humidity value of steam released by the steam generation unit are / is adjusted till the difference value of the first oil smoke concentration and the second oil smoke concentration meets the first preset difference value range. By means of the method, the settling rate of lampblack particles in the ventilation pipeline at the front end of the draught fan unit is increased, and the lampblack purification effect of internal circulation of the range hood is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of household appliances, and in particular, to an oil fume purification control method, a control device, an oil fume machine and a medium for an oil fume machine. Background Art

[0002] With the development of society and the progress of the times, the oil fume machine has become an essential kitchen appliance in every household. The main function of the oil fume machine is to extract, filter and discharge the oil fume generated during cooking by users, so as to complete the purification work of the kitchen environment.

[0003] However, for the current oil fume machines on the market, the oil fume separation method is mainly to filter out the oil fume through the oil screen in the smoke collecting cavity, the oil screen at the air inlet of the fan and the fan. When dealing with a large amount of oil fume, the oil fume purification effect of the oil fume machine is low, and it cannot quickly discharge the oil fume, resulting in the situation of oil fume escape and smoke leakage, which causes the continuous excessive concentration of PM2.5 in the kitchen, and the oil fume and peculiar smell will also cause harm to the human body. In addition, for the existing internal circulation type oil fume machine, the sedimentation rate of oil fume particles in the ventilation duct from the oil fume inlet of the oil fume machine to the air inlet of the fan is small, resulting in low oil fume purification efficiency and poor oil fume filtering effect at the front end of the fan. The oil fume particles are mainly filtered by applying centrifugal force and gravity to the oil fume particles by the fan at the power end. However, the oil fume filtering effect will vary with the operating conditions of the oil fume machine, and the oil fume purification efficiency will also be different, which greatly affects the user experience. Moreover, the indoor air quality deteriorates after cooking, which is harmful to human health. There are still a small number of oil fumes with small particles and small droplets discharged to the outside through the exhaust duct, thus affecting the quality of the atmospheric environment. Summary of the Invention

[0004] The embodiments of the present invention provide an oil fume purification control method, a control device, an oil fume machine and a medium for an oil fume machine, so as to increase the sedimentation rate of oil fume particles in the ventilation duct at the front end of the fan unit, improve the oil fume purification effect of the internal circulation of the oil fume machine, reduce the emission of oil fume particles, reduce the oil fume smell discharged into the room, and achieve a better air purification function.

[0005] In a first aspect, the embodiments of the present invention provide an oil fume purification control method for an oil fume machine. The oil fume machine includes a fan unit, an ion generation unit, a steam generation unit and a ventilation duct. One end of the ventilation duct is used as the oil fume inlet of the oil fume machine and is communicated with the kitchen environment, and the other end of the ventilation duct is used as the air inlet of the fan and is communicated with the fan unit. The ion generation unit and the steam generation unit are both arranged in the ventilation duct;

[0006] The control method includes:

[0007] Control the oil fume machine to start and the fan unit to operate;

[0008] Execute at least one first cycle period; The first cycle period includes:

[0009] Obtain the first oil fume concentration at the smoke inlet of the range hood in real time;

[0010] After determining that the ion generation unit is turned on, obtain the second oil fume concentration at the smoke inlet of the fan in real time;

[0011] Judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range;

[0012] When the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, adjust the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range.

[0013] Optionally, after controlling the range hood to start and the fan unit to operate, it further includes:

[0014] Execute at least one second cycle; The second cycle includes:

[0015] Obtain the first oil fume concentration at the smoke inlet of the range hood in real time;

[0016] After determining that the ion generation unit is turned on, obtain the second oil fume concentration at the smoke inlet of the fan in real time;

[0017] Judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range;

[0018] Determine that the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range.

[0019] Optionally, when the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, adjusting the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range includes:

[0020] When the difference between the first oil fume concentration and the second oil fume concentration meets the second preset difference range, adjust the temperature value of the steam released by the steam generation unit to the first temperature threshold and adjust the humidity value of the steam released by the steam generation unit to the first humidity threshold;

[0021] When the difference between the first oil fume concentration and the second oil fume concentration satisfies the third preset difference range, adjust the temperature value of the steam released by the steam generating unit to the second temperature threshold, and adjust the humidity value of the steam released by the steam generating unit to the second humidity threshold until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range; wherein, the first preset difference range, the second preset difference range and the third preset difference range do not overlap with each other, the lower limit value of the second preset difference range is greater than the upper limit value of the third preset difference range, the lower limit value of the third preset difference range is greater than the upper limit value of the first preset difference range, and the first temperature threshold is greater than the second temperature threshold, and the first humidity threshold is greater than the second humidity threshold.

[0022] Optionally, the interval lengths of the second preset difference range and the third preset difference range are the same, and the first temperature threshold is twice the second temperature threshold, and the first humidity threshold is twice the second humidity threshold.

[0023] Optionally, when the difference between the first oil fume concentration and the second oil fume concentration satisfies the third preset difference range, adjust the temperature value of the steam released by the steam generating unit to the second temperature threshold, and adjust the humidity value of the steam released by the steam generating unit to the second humidity threshold until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range, and further include:

[0024] After the first preset time threshold, when the difference between the first oil fume concentration and the second oil fume concentration has not decreased to satisfy the first preset difference range, issue a reminder that the steam generating unit needs maintenance.

[0025] Optionally, when the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, while adjusting the temperature value and / or humidity value of the steam released by the steam generating unit, further include:

[0026] Adjust the gear of the fan unit to the short-term speed-up gear.

[0027] Optionally, after obtaining the first oil fume concentration at the smoke inlet of the range hood in real time, further include:

[0028] After determining that the ion generating unit is not turned on, obtain the rotation speed of the fan unit in real time;

[0029] When the rotation speed of the fan unit is less than the first preset rotation speed threshold, adjust the gear of the fan unit to the short-term speed-up gear.

[0030] Second aspect, an embodiment of the present invention further provides an oil fume purification control device for a range hood. The range hood includes a fan unit, an ion generation unit, a steam generation unit, and a ventilation duct. One end of the ventilation duct serves as the range hood's smoke inlet and is connected to the kitchen environment, and the other end of the ventilation duct serves as the fan's smoke inlet and is connected to the fan unit. Both the ion generation unit and the steam generation unit are arranged in the ventilation duct;

[0031] The control device includes:

[0032] A startup operation module, configured to control the startup of the range hood and the operation of the fan unit;

[0033] A first loop execution module, configured to execute at least one first loop period. The first loop period includes:

[0034] A first concentration acquisition unit, configured to acquire the first oil fume concentration at the range hood's smoke inlet in real time;

[0035] A second concentration acquisition unit, configured to determine that after the ion generation unit is turned on, acquire the second oil fume concentration at the fan's smoke inlet in real time;

[0036] A difference judgment unit, configured to judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration satisfies a first preset difference range;

[0037] A steam adjustment unit, configured to adjust the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range when the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range.

[0038] Third aspect, an embodiment of the present invention further provides a range hood, including:

[0039] One or more processors;

[0040] A storage device, configured to store one or more programs;

[0041] When the one or more programs are executed by the one or more processors, the one or more processors implement the oil fume purification control method of the range hood provided in any one of the first aspects.

[0042] Fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements the oil fume purification control method of the range hood provided in any one of the first aspects.

[0043] The embodiments of the present invention provide an oil fume purification control method, a control device, a range hood and a medium for a range hood. The range hood includes a fan unit, an ion generation unit, a steam generation unit and a ventilation duct. One end of the ventilation duct is used as the range hood smoke inlet and is communicated with the kitchen environment, and the other end of the ventilation duct is used as the fan smoke inlet and is communicated with the fan unit. The ion generation unit and the steam generation unit are both arranged in the ventilation duct. The control method first controls the range hood to start and the fan unit to operate, and then executes at least one first cycle. The first cycle includes obtaining the first oil fume concentration at the range hood smoke inlet in real time, determining that the ion generation unit is turned on, obtaining the second oil fume concentration at the fan smoke inlet in real time, and determining whether the difference between the first oil fume concentration and the second oil fume concentration satisfies a first preset difference range. When the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, adjust the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range. By using the above method, the ion generation unit and the steam generation unit are arranged in the ventilation duct in front of the fan unit, the difference between the first oil fume concentration at the range hood smoke inlet and the second oil fume concentration at the fan smoke inlet is monitored in real time, and the mixing ratio of the oil fume, the ion concentration, the temperature and the humidity in the ventilation duct is adjusted correspondingly, effectively improving the sedimentation rate of the oil fume particles in the ventilation duct in front of the fan unit, improving the oil fume purification effect of the internal circulation of the range hood, reducing the emission of oil fume particles, reducing the oil fume smell discharged into the room, and achieving a better air purification function. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic cross-sectional structure diagram of a range hood provided by an embodiment of the present invention;

[0045] Figure 2 is a schematic flowchart of an oil fume purification control method for a range hood provided by an embodiment of the present invention;

[0046] Figure 3 is a schematic flowchart of another oil fume purification control method for a range hood provided by an embodiment of the present invention;

[0047] Figure 4 is a schematic flowchart of yet another oil fume purification control method for a range hood provided by an embodiment of the present invention;

[0048] Figure 5 is a schematic flowchart of yet another oil fume purification control method for a range hood provided by an embodiment of the present invention;

[0049] Figure 6 is a schematic structural diagram of an oil fume purification control device for a range hood provided by an embodiment of the present invention;

[0050] Figure 7It is a schematic diagram of the terminal control structure of a range hood provided by an embodiment of the present invention.

[0051] Explanation of reference numerals:

[0052] 10 - Fan unit; 20 - Ion generation unit; 30 - Steam generation unit; 40 - Ventilation duct; 51 - First oil fume sensor; 52 - Second oil fume sensor. Detailed implementation manners

[0053] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0054] An embodiment of the present invention provides an oil fume purification control method for a range hood. As Figure 1 shown, the range hood includes a fan unit 10, an ion generation unit 20, a steam generation unit 30, and a ventilation duct 40. One end of the ventilation duct 40 serves as the range hood's smoke inlet and is connected to the kitchen environment, and the other end of the ventilation duct 40 serves as the fan's smoke inlet and is connected to the fan unit 10. Moreover, both the ion generation unit 20 and the steam generation unit 30 are disposed within the ventilation duct 40. The oil fume purification control method of this range hood is applicable to the oil fume purification process within the ventilation duct 40 at the front end of the fan unit 10. The oil fume purification control method of this range hood can be executed by an oil fume purification control device, which can be implemented in the form of hardware and / or software, and this oil fume purification control device can be configured in a control board. As Figure 2 shown, the control method includes:

[0055] S110. Control the range hood to start and the fan unit to operate.

[0056] Specifically, continuing to refer to Figure 1 , the range hood can be controlled to start by means such as the user pressing the power key, voice command, gesture command, etc. That is, the range hood can perform the smoking process, and the fan unit 10 can start operating at the default speed or the initial speed. Exemplarily, the fan unit 10 can be a turbine fan type fan. One end of the ventilation duct 40 serves as the range hood's smoke inlet and is connected to the kitchen environment, and the other end of the ventilation duct 40 serves as the fan's smoke inlet and is connected to the fan unit 10. Thus, when the fan unit 10 operates, the oil fume and air in the kitchen environment can be successively inhaled into the fan unit 10 through the range hood's smoke inlet and the fan's smoke inlet, thereby providing the effect of exhausting oil fume. Exemplarily, Figure 1 the direction of the blue arrow in

[0057] S120. Execute at least one first cycle period; the first cycle period includes S121 - S124.

[0058] S121. Real - time obtain the first oil - fume concentration at the oil - fume inlet of the range hood.

[0059] Specifically, continue to refer to Figure 1 , the oil - fume inlet of the range hood is connected to the kitchen environment. By obtaining the first oil - fume concentration at the oil - fume inlet of the range hood, the amount of oil - fume in the kitchen environment can be preliminarily judged, so as to facilitate the subsequent regulation of the oil - fume purification parameters in the range hood and ensure the oil - fume purification effect of the range hood. The first oil - fume concentration at the oil - fume inlet of the range hood can be real - time monitored by an oil - fume concentration monitor or a gas sensor, etc. Exemplarily, Figure 1 as shown in, it can be the first oil - fume sensor 51. The first oil - fume sensor 51 is arranged in the ventilation duct 40 and near the oil - fume inlet of the range hood. Exemplarily, the monitoring principles of oil - fume concentration include the electrochemical method, the light - scattering method, and the light - pair method. Among them, the electrochemical method uses an oil - fume probe to sample oil - fume gas at positions such as the oil - fume discharge pipe. The collected oil - fume gas is transmitted to a sieve sensor with multiple pores. After the pores of the sieve sensor receive oil - fume particles, the passing resistance of the sieve sensor increases, correspondingly causing a change in the current intensity of the flowing current. That is, through the linear relationship (proportional relationship) between the current intensity and the oil - fume concentration, the oil - fume concentration can be calculated according to the current intensity. The light - scattering method includes the forward light - scattering method, the backward light - scattering method, and the focused light - scattering method. The forward light - scattering method, the backward light - scattering method, and the focused light - scattering method all use a laser beam to irradiate positions such as the oil - fume discharge pipe. The oil - fume particles existing in positions such as the oil - fume discharge pipe will cause the laser beam to scatter to different degrees. That is, through the linear relationship (proportional relationship) between the scattered light intensity and the oil - fume concentration, the oil - fume concentration can be calculated according to the scattered light intensity. The light - pair method uses an optical sensor to sample oil - fume gas at positions such as the oil - fume discharge pipe. The emitting end of the optical sensor continuously emits infrared light waves. When oil - fume particles enter the optical sensor, the oil - fume particles intersect with the infrared light waves and scatter to produce scattered light. Then the receiving end of the optical sensor can receive infrared light waves with different scattering degrees. That is, through the linear relationship (proportional relationship) between the infrared light wave intensity and the oil - fume concentration, the oil - fume concentration can be calculated according to the infrared light wave intensity.

[0060] S122. After determining that the ion - generating unit is turned on, real - time obtain the second oil - fume concentration at the air - inlet of the fan.

[0061] Specifically, continue to refer to Figure 1, an ion generating unit 20 is provided in the ventilation duct 40. After the ion generating unit 20 is turned on, the ion generating unit 20 can generate negative ions and / or positive ions. Among them, negative ions have a strong adsorption ability and can adsorb lampblack, oil droplets, particulate matters, etc. Negative ions have the characteristic of neutralizing the positive charges in air suspensions (such as bacteria, dust, smoke, etc.). Negative ions can neutralize harmful chemical substances in the air such as the smoke, carbon monoxide, sulfur dioxide, and gas generated during cooking. Once these substances are adsorbed by negative ions, they will aggregate together due to electrostatic action, thus becoming larger in mass, effectively improving the sedimentation rate of lampblack particles in the ventilation duct 40 at the front end of the fan unit 10, making it easier for lampblack to be filtered, preventing substances such as dust and lampblack in the air inhaled into the ventilation duct 40 from floating with the air, and effectively removing them to achieve the effect of purifying the indoor air of the kitchen, reducing the harm of lampblack and peculiar smell to the human body, and at the same time being able to purify the air and relieve indoor pollutants. Exemplarily, the ion generating unit 20 can be a negative ion generator or a positive and negative ion generator.

[0062] And, exemplarily, it can be determined whether the ion generating unit 20 is turned on by detecting whether the user has manually turned on the ion purifying smoke mode. In other words, after detecting that the user manually turns on the ion purifying smoke mode, it can be determined that the ion generating unit 20 is turned on. After detecting that the user does not manually turn on the ion purifying smoke mode, it can be determined that the ion generating unit 20 is not turned on. It can be understood that when the ion generating unit 20 is not turned on, since the sedimentation rate of lampblack particles in the ventilation duct 40 at the front end of the fan unit 10 is relatively low, the fan unit 10 is mainly used to apply centrifugal force and gravity to the lampblack particles to filter the lampblack. And at this time, the first lampblack concentration at the smoke inlet of the range hood is similar to the second lampblack concentration at the fan inlet, and there is no need to obtain the second lampblack concentration at the fan inlet in real time. When the ion generating unit 20 is turned on, the sedimentation rate of lampblack particles in the ventilation duct 40 at the front end of the fan unit 10 is effectively improved. At this time, it is necessary to obtain the second lampblack concentration at the fan inlet in real time to reasonably regulate and control the lampblack purification efficiency in the ventilation duct 40 at the front end of the fan unit 10. The first lampblack concentration at the smoke inlet of the range hood can be monitored in real time through a lampblack concentration monitor or a gas sensor, etc. Exemplarily, Figure 1 as shown, it can be the second lampblack sensor 52. The second lampblack sensor 52 is arranged in the ventilation duct 40 and near the fan inlet. The monitoring principle of the lampblack concentration is the same as the above steps and will not be elaborated here.

[0063] S123. Real-time judge whether the difference between the first lampblack concentration and the second lampblack concentration satisfies the first preset difference range.

[0064] Among them, the first preset difference range can be determined according to the oil fume purification situation of the range hood, the type of the motor of the range hood, and the fan parameters. Exemplarily, the first preset difference range can be [0, C / 2), where C is the preset oil fume concentration threshold, and C / 2 is the critical oil fume concentration threshold. Specifically, continue to refer to Figure 1 , one end of the ventilation duct 40 serves as the range hood smoke inlet and communicates with the kitchen environment, and the other end of the ventilation duct 40 serves as the fan smoke inlet and communicates with the fan unit 10. Then, the difference between the first oil fume concentration at the range hood smoke inlet and the second oil fume concentration at the fan smoke inlet can characterize the purification effect of the oil fume particles in the ventilation duct 40 at the front end of the fan unit 10. It can be understood that when the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range, it means that the ion generation unit 20 is in normal operation, and the negative ions and / or positive ions generated by the ion generation unit 20 can achieve efficient purification of the oil fume particles in the ventilation duct 40, and the oil fume purification effect of the range hood is good. At this time, there is no need to adjust the operation of the range hood. When the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, it means that the negative ions and / or positive ions generated by the ion generation unit 20 cannot achieve efficient purification of the oil fume particles in the ventilation duct 40, the oil fume concentration in the ventilation duct 40 is relatively high, and the oil fume purification effect of the range hood is relatively low. At this time, it is necessary to adjust the operation of the range hood to ensure the impact of oil fume and odor in the kitchen environment on the health of users.

[0065] S124. When the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, adjust the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

[0066] Specifically, continue to refer to Figure 1 , a steam generation unit 30 is further provided in the ventilation duct 40. After the steam generation unit 30 is turned on, the steam generation unit 30 can generate steam and improve the temperature and / or humidity of the oil fume particles in the ventilation duct 40. And according to the formation mechanism of negative ions, on the one hand, negative ions in the air are the product of the combination of molecules with excess charges and a certain amount of water molecules. Therefore, there must be a certain water content in the environment to form air negative ions. More importantly, there is a certain amount of -OH in the air negative ions combined with water to form OH - (H 2 O) n . When the humidity in the ventilation duct 40 is relatively high, OH - (H 2 O) nAs the quantity increases, the concentration of air negative ions increases with the increase in humidity within the ventilation duct 40. An increase in the temperature within the ventilation duct 40 can accelerate the thermal motion speed of molecules or atoms, increasing the probability of mutual collisions and the probability of collision ionization. Since the ionization energy of oxygen is relatively large, as the temperature rises, the average kinetic energy of molecules or atoms increases, enhancing the ability of oxygen to be ionized, and the concentration of negative oxygen ions also increases with the increase in temperature. Thus, the concentration of negative ions within the ventilation duct 40 is effectively increased without the need to additionally set up a larger number of ion generation units 20. Moreover, the steam generated by the steam generation unit 30 can also serve as a carrier for negative ions within the ventilation duct 40 and can drive the diffusion of negative ions, enhancing the dispersion range of negative ions, thereby achieving a better air purification function.

[0067] Furthermore, when the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, it indicates that the negative ions and / or positive ions generated by the ion generation unit 20 cannot efficiently purify the oil fume particles within the ventilation duct 40. The oil fume concentration within the ventilation duct 40 is relatively high, and the oil fume purification effect of the range hood is relatively low. It is necessary to additionally activate the steam generation unit 30 to adjust the operation of the range hood. In this way, the concentration of negative ions within the ventilation duct 40 is increased, and the sedimentation rate of the oil fume particles within the ventilation duct 40 at the front end of the fan unit 10 is effectively improved. Therefore, the temperature value and / or humidity value of the steam released by the steam generation unit 30 can be adjusted in real time until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range. At this time, it indicates that the ion generation unit 20 is operating normally, and the negative ions and / or positive ions generated by the ion generation unit 20 can efficiently purify the oil fume particles within the ventilation duct 40, and the oil fume purification effect of the range hood is good. At this time, there is no need to adjust the operation of the range hood. Thus, this cycle process ends, and the next cycle period can be restarted.

[0068] In the technical solution of the embodiments of the present invention, an ion generation unit and a steam generation unit are provided within the ventilation duct at the front end of the fan unit, the difference between the first oil fume concentration at the smoke inlet of the range hood and the second oil fume concentration at the smoke inlet of the fan is monitored in real time, and the mixing ratio of the oil fume and the ion concentration, temperature, and humidity within the ventilation duct is correspondingly adjusted, effectively improving the sedimentation rate of the oil fume particles within the ventilation duct at the front end of the fan unit, enhancing the oil fume purification effect of the internal circulation of the range hood, reducing the emission of oil fume particles, and reducing the oil fume odor discharged into the room, achieving a better air purification function.

[0069] Optionally, when the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, while adjusting the temperature value and / or humidity value of the steam released by the steam generation unit, it further includes: adjusting the gear of the fan unit to a short-term speed-up gear.

[0070] Specifically, when the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, it means that the negative ions and / or positive ions generated by the ion generation unit 20 cannot achieve efficient purification of the oil fume particles in the ventilation duct 40. The oil fume concentration in the ventilation duct 40 is relatively high, and the oil fume purification effect of the range hood is relatively low. At this time, not only does it need to additionally turn on the steam generation unit 30 to adjust the operation of the range hood, but also the operation gear of the fan unit 10 needs to be adjusted to adjust the operation of the range hood, further ensuring efficient and rapid purification of the oil fume particles in the ventilation duct 40 and good oil fume purification effect of the range hood.

[0071] Optionally, after obtaining the first oil fume concentration at the smoke inlet of the range hood in real time, it further includes: after determining that the ion generation unit is not turned on, obtaining the rotation speed of the fan unit in real time; when the rotation speed of the fan unit is less than the first preset rotation speed threshold, adjusting the gear of the fan unit to a short-time speed-up gear.

[0072] Among them, the first preset rotation speed threshold can be determined according to the oil fume purification situation of the range hood and the operation situation of the fan. Specifically, continue to refer to Figure 1 , after detecting that the user manually does not turn on the ion purification mode, it can be determined that the ion generation unit 20 is not turned on. It can be understood that when the ion generation unit 20 is not turned on, since the sedimentation rate of the oil fume particles in the ventilation duct 40 at the front end of the fan unit 10 is relatively low, the fan unit 10 is mainly used to apply centrifugal force and gravity to the oil fume particles to filter the oil fume. At this time, it is necessary to monitor the rotation speed of the fan unit 10 in real time to avoid insufficient back pressure caused by too low rotation speed of the fan unit 10, further reducing the oil fume purification effect of the range hood. That is, when the rotation speed of the fan unit 10 is less than the first preset rotation speed threshold, the gear of the fan unit 10 can be adjusted to a short-time speed-up gear, and this short-time speed-up gear can also be understood as the maximum rotation speed gear of the fan unit 10.

[0073] The embodiment of the present invention also provides an oil fume purification control method for a range hood, and this embodiment is optimized on the basis of the above embodiment. Optionally, after controlling the range hood to start and the fan unit to operate, it further includes:

[0074] Executing at least one second cycle; the second cycle includes:

[0075] Obtaining the first oil fume concentration at the smoke inlet of the range hood in real time;

[0076] After determining that the ion generation unit is turned on, obtaining the second oil fume concentration at the smoke inlet of the fan in real time;

[0077] Judging in real time whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range;

[0078] Determine that the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

[0079] For the content not detailed in this embodiment, please refer to the above embodiments, such as Figure 3 As shown, the control method includes:

[0080] S210. Control the start of the range hood and operate the fan unit.

[0081] S220. Execute at least one first cycle; the first cycle includes S221 - S224.

[0082] S221. Obtain the first oil fume concentration at the smoke inlet of the range hood in real time.

[0083] S222. After determining that the ion generation unit is turned on, obtain the second oil fume concentration at the smoke inlet of the fan in real time.

[0084] S223. Judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

[0085] S224. When the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, adjust the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

[0086] S230. Execute at least one second cycle; the second cycle includes S231 - S234.

[0087] S231. Obtain the first oil fume concentration at the smoke inlet of the range hood in real time.

[0088] S232. After determining that the ion generation unit is turned on, obtain the second oil fume concentration at the smoke inlet of the fan in real time.

[0089] S233. Judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

[0090] Specifically, for the content not detailed in S231 - S233, please refer to the above embodiments.

[0091] S234. Determine that the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

[0092] Specifically, when the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range, it indicates that the ion generation unit 20 is in normal operation. The negative ions and / or positive ions generated by the ion generation unit 20 can efficiently purify the oil fume particles in the ventilation duct 40, and the oil fume purification effect of the range hood is good. At this time, there is no need to adjust the operation of the range hood. Thus, this cycle process ends, and the next cycle period can be restarted.

[0093] It should be noted that S220 (S221 - S224) is the execution process of the first cycle period, S230 (S231 - S234) is the execution process of the second cycle period, and S220 and S230 are two parallel schemes regarding the comparison results of the difference between the first oil fume concentration and the second oil fume concentration after the range hood is started and operated. Figure 3 The arrangement order of S220 and S230 shown is only an example and is not limited herein. In one embodiment, the operation processes of S221 - S223 and the operation processes of S231 - S233 can be understood as being carried out simultaneously.

[0094] Optionally, after obtaining the first oil fume concentration at the smoke inlet of the range hood in real time, it further includes: after determining that the ion generation unit is not turned on, obtaining the rotation speed of the fan unit in real time; when the rotation speed of the fan unit is less than the first preset rotation speed threshold, adjusting the gear of the fan unit to a short - time speed - up gear.

[0095] Among them, the first preset rotation speed threshold can be determined according to the oil fume purification situation of the range hood and the operation situation of the fan. Specifically, continue to refer to Figure 1 , after detecting that the user manually does not turn on the ion fume purification mode, it can be determined that the ion generation unit 20 is not turned on. It can be understood that when the ion generation unit 20 is not turned on, due to the low sedimentation rate of the oil fume particles in the ventilation duct 40 at the front end of the fan unit 10, the fan unit 10 is mainly used to apply centrifugal force and gravity to filter the oil fume particles to the oil fume. At this time, it is necessary to monitor the rotation speed of the fan unit 10 in real time to avoid insufficient back pressure caused by too low a rotation speed of the fan unit 10, further reducing the oil fume purification effect of the range hood. That is, when the rotation speed of the fan unit 10 is less than the first preset rotation speed threshold, the gear of the fan unit 10 can be adjusted to a short - time speed - up gear, and this short - time speed - up gear can also be understood as the maximum rotation speed gear of the fan unit 10.

[0096] The embodiment of the present invention also provides an oil fume purification control method for a range hood. This embodiment is optimized on the basis of the above - mentioned embodiment. Optionally, when the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, adjusting the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range, including:

[0097] When the difference between the first oil fume concentration and the second oil fume concentration satisfies the second preset difference range, adjust the temperature value of the steam released by the steam generating unit to the first temperature threshold, and adjust the humidity value of the steam released by the steam generating unit to the first humidity threshold;

[0098] When the difference between the first oil fume concentration and the second oil fume concentration satisfies the third preset difference range, adjust the temperature value of the steam released by the steam generating unit to the second temperature threshold, and adjust the humidity value of the steam released by the steam generating unit to the second humidity threshold until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range; wherein, the first preset difference range, the second preset difference range and the third preset difference range do not overlap with each other, the lower limit value of the second preset difference range is greater than the upper limit value of the third preset difference range, the lower limit value of the third preset difference range is greater than the upper limit value of the first preset difference range, and the first temperature threshold is greater than the second temperature threshold, and the first humidity threshold is greater than the second humidity threshold.

[0099] For the content not detailed in this embodiment, please refer to the above embodiment, such as Figure 4 As shown, the control method includes:

[0100] S310. Control the range hood to start and the fan unit to operate.

[0101] S320. Execute at least one first cycle; the first cycle includes S321 - S325.

[0102] S321. Real-time obtain the first oil fume concentration at the smoke inlet of the range hood.

[0103] S322. After determining that the ion generating unit is turned on, real-time obtain the second oil fume concentration at the smoke inlet of the fan.

[0104] S323. Real-time determine whether the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

[0105] S324. When the difference between the first oil fume concentration and the second oil fume concentration satisfies the second preset difference range, adjust the temperature value of the steam released by the steam generating unit to the first temperature threshold, and adjust the humidity value of the steam released by the steam generating unit to the first humidity threshold.

[0106] First of all, it should be noted that in this embodiment, the intervals outside the first preset difference range are substantially subdivided to facilitate more targeted regulation of the temperature value and / or humidity value of the steam released by the steam generation unit. Among them, the second preset difference range can be determined according to the oil fume purification situation of the range hood, the type of the motor of the range hood, and the fan parameters. Exemplarily, the second preset difference range can be [3C / 4, C], where C is the preset oil fume concentration threshold, and C / 2 is the critical oil fume concentration threshold. The first temperature threshold can be set according to the oil fume particles and the demand for negative ions in the ventilation duct. Exemplarily, the first temperature threshold can be K1. The first humidity threshold can be set according to the oil fume particles and the demand for negative ions in the ventilation duct. Exemplarily, the first humidity threshold can be RH1. Specifically, continue to refer to Figure 1 When the difference between the first oil fume concentration and the second oil fume concentration obtained in real time satisfies the second preset difference range, the temperature value of the steam released by the steam generation unit 30 can be adjusted to the first temperature threshold, and the humidity value of the steam released by the steam generation unit 30 can be adjusted to the first humidity threshold until it is determined again that the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the second preset difference range, and then the temperature value and / or humidity value of the steam released by the steam generation unit 30 can be adjusted. It can be understood that the more the number of negative ions in the ventilation duct 40, the more it can promote the oil fume purification effect of the range hood.

[0107] S325. When the difference between the first oil fume concentration and the second oil fume concentration satisfies the third preset difference range, adjust the temperature value of the steam released by the steam generation unit to the second temperature threshold, and adjust the humidity value of the steam released by the steam generation unit to the second humidity threshold until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range; among them, the first preset difference range, the second preset difference range and the third preset difference range do not overlap with each other, the lower limit value of the second preset difference range is greater than the upper limit value of the third preset difference range, the lower limit value of the third preset difference range is greater than the upper limit value of the first preset difference range, and the first temperature threshold is greater than the second temperature threshold, and the first humidity threshold is greater than the second humidity threshold.

[0108] Among them, the third preset difference range can be determined according to the oil fume purification situation of the range hood, the type of the motor of the range hood, and the fan parameters. Exemplarily, the third preset difference range can be [C / 2, 3C / 4), where C is the preset oil fume concentration threshold, and C / 2 is the critical oil fume concentration threshold. The second temperature threshold can be set according to the oil fume particles and the demand for negative ions in the ventilation duct. Exemplarily, the second temperature threshold can be K2. The second humidity threshold can be set according to the oil fume particles and the demand for negative ions in the ventilation duct. Exemplarily, the second humidity threshold can be RH2. Specifically, continue to refer to Figure 1, when the difference between the first oil fume concentration and the second oil fume concentration obtained in real time satisfies the third preset difference range, the temperature value of the steam released by the steam generating unit 30 can be adjusted to the second temperature threshold, and the humidity value of the steam released by the steam generating unit 30 can be adjusted to the second humidity threshold until it is obtained again and it is determined that the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the third preset difference range and satisfies the first preset difference range. It can be understood that the more the number of negative ions in the ventilation duct 40, the more the oil fume purification effect of the range hood can be promoted. However, as the oil fume concentration in the ventilation duct 40 decreases, there is no need to generate more negative ions. Therefore, the humidity value and / or the temperature value of the steam released by the steam generating unit 30 can be appropriately adjusted, which is beneficial to further reducing the power consumption of the steam generating unit 30 on the premise of ensuring the oil fume purification effect.

[0109] In addition, in this embodiment, it is defined here that the first preset difference range, the second preset difference range and the third preset difference range do not overlap with each other. The lower limit value of the second preset difference range is greater than the upper limit value of the third preset difference range, and the lower limit value of the third preset difference range is greater than the upper limit value of the first preset difference range. During the adjustment process of the humidity value and / or the temperature value of the steam released by the steam generating unit 30 in the range hood, as the amount of steam released by the steam generating unit 30 increases, the value of the difference between the first oil fume concentration and the second oil fume concentration obtained in real time also decreases. Then, it can be successively determined whether the difference between the first oil fume concentration and the second oil fume concentration satisfies the second preset difference range, and whether the difference between the first oil fume concentration and the second oil fume concentration satisfies the third preset difference range. During this process, the humidity value and / or the temperature value of the steam released by the steam generating unit 30 are adjusted in real time until it is determined whether the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range. After that, the humidity value and / or the temperature value of the steam released by the steam generating unit 30 can be turned off or maintained unchanged.

[0110] It should also be noted that S324 is the range hood control process corresponding to the difference between the first oil fume concentration and the second oil fume concentration judged in real time satisfying the second preset difference range, and S325 is the range hood control process corresponding to the difference between the first oil fume concentration and the second oil fume concentration satisfying the third preset difference range. S324 and S325 are two parallel schemes for the judgment and analysis of the difference between the first oil fume concentration and the second oil fume concentration. Figure 4 The arrangement order of S324 and S325 shown is only an example and is not limited here.

[0111] In a specific embodiment, optionally, the interval lengths of the second preset difference range and the third preset difference range are the same, and the first temperature threshold is twice the second temperature threshold, and the first humidity threshold is twice the second humidity threshold.

[0112] Specifically, the second preset difference range can be [3C / 4, C], and the third preset difference range can be [C / 2, 3C / 4), where C is the preset oil fume concentration threshold, and C / 2 is the critical oil fume concentration threshold. In this way, the interval lengths of the second preset difference range and the third preset difference range are the same, both being C / 4. Also, the first temperature threshold is greater than the second temperature threshold. The first temperature threshold can be twice the second temperature threshold, that is, K1 = 2 × K2; the first humidity threshold is greater than the second humidity threshold. The first humidity threshold can be twice the second humidity threshold, that is, RH1 = 2 × RH2.

[0113] Optionally, when the difference between the first oil fume concentration and the second oil fume concentration satisfies the third preset difference range, the temperature value of the steam released by the steam generating unit is adjusted to the second temperature threshold, and the humidity value of the steam released by the steam generating unit is adjusted to the second humidity threshold. Until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range, it also includes: after the first preset time threshold, when the difference between the first oil fume concentration and the second oil fume concentration still fails to decrease to satisfy the first preset difference range, a reminder for the steam generating unit to be maintained is issued.

[0114] Among them, the first preset time threshold can be determined according to the user's cooking needs and the actual operating conditions of the range hood. Specifically, continue to refer to Figure 1 , after the first preset time threshold, when the difference between the first oil fume concentration and the second oil fume concentration still fails to decrease to satisfy the first preset difference range, this indicates that the steam generating unit 30 is caused by reasons such as long-term water shortage, and the user needs to be reminded to maintain the steam generating unit 30.

[0115] The embodiment of the present invention also provides an oil fume purification control method for a range hood, as Figure 1 and Figure 5As shown, first, control the start of the range hood, that is, the range hood can perform the smoking process, and the fan unit 10 can start running at the default speed or the initial speed. After that, the first oil fume sensor 51 can be used to obtain the first oil fume concentration C1 at the smoke inlet of the range hood in real time. It can be determined whether the ion generating unit 20 is turned on by detecting whether the user has manually turned on the ion fume purification mode. In other words, after detecting that the user has manually turned on the ion fume purification mode, it can be determined that the ion generating unit 20 is turned on. After detecting that the user has not manually turned on the ion fume purification mode, it can be determined that the ion generating unit 20 is not turned on. When the ion generating unit 20 is turned on, the second oil fume sensor 52 can be used to obtain the second oil fume concentration C2 at the smoke inlet of the fan in real time, and obtain the difference C3 between the first oil fume concentration and the second oil fume concentration, C3 = C1 - C2, and determine whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range. When the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range, the next cycle can be restarted to obtain the first oil fume concentration C1 at the smoke inlet of the range hood in real time. When the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, the steam generating unit 30 can be turned on, and at the same time, the gear of the fan unit 10 can be adjusted to the short-term speed increase gear. In addition, it is also necessary to further determine whether the difference between the first oil fume concentration and the second oil fume concentration meets the second preset difference range. When the difference between the first oil fume concentration and the second oil fume concentration meets the second preset difference range, the temperature value of the steam released by the steam generating unit 30 is adjusted to the first temperature threshold, and the humidity value of the steam released by the steam generating unit 30 is adjusted to the first humidity threshold. When the difference between the first oil fume concentration and the second oil fume concentration does not meet the second preset difference range, it can be further determined whether the difference between the first oil fume concentration and the second oil fume concentration meets the third preset difference range. When the difference between the first oil fume concentration and the second oil fume concentration meets the third preset difference range, the temperature value of the steam released by the steam generating unit 30 is adjusted to the second temperature threshold, and the humidity value of the steam released by the steam generating unit 30 is adjusted to the second humidity threshold. When the difference between the first oil fume concentration and the second oil fume concentration does not meet the third preset difference range, it is necessary to determine again whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range. During this process, after the first preset time threshold, when the difference between the first oil fume concentration and the second oil fume concentration has not decreased to meet the first preset difference range, it indicates that the steam generating unit 30 is caused by reasons such as long-term water shortage, and the user needs to be reminded to maintain and repair the steam generating unit 30.In addition, when the ion generating unit 20 is not turned on, since the sedimentation rate of oil fume particles in the ventilation duct 40 at the front end of the fan unit 10 is relatively low, the fan unit 10 is mainly used to apply centrifugal force and gravity to the oil fume particles to filter the oil fume. At this time, it is necessary to monitor the rotation speed of the fan unit 10 in real time, and the gear of the fan unit 10 can be adjusted to a short-term speed increase gear, which can also be understood as the maximum speed gear of the fan unit 10.

[0116] Based on the same inventive concept, an embodiment of the present invention further provides an oil fume purification control device for a range hood, as Figure 1 shown. The range hood includes a fan unit 10, an ion generating unit 20, a steam generating unit 30, and a ventilation duct 40. One end of the ventilation duct 40 is used as the range hood smoke inlet and is communicated with the kitchen environment, and the other end of the ventilation duct 40 is used as the fan smoke inlet and is communicated with the fan unit 10. The ion generating unit 20 and the steam generating unit 30 are both arranged in the ventilation duct 40. The oil fume purification control device of the range hood is applicable to the oil fume purification process in the ventilation duct 40 at the front end of the fan unit 10. The oil fume purification control device can be implemented in the form of hardware and / or software and is generally configured in a control board. As Figure 6 shown, the control device includes:

[0117] A start-up operation module 410, configured to control the start-up of the range hood and the operation of the fan unit; a first loop execution module 420, configured to execute at least one first loop period. The first loop execution module 420 includes a first concentration acquisition unit 421, a second concentration acquisition unit 422, a difference judgment unit 423, and a steam adjustment unit 424. The first concentration acquisition unit 421 is configured to acquire the first oil fume concentration at the range hood smoke inlet in real time. The second concentration acquisition unit 422 is configured to acquire the second oil fume concentration at the fan smoke inlet in real time after the ion generating unit is turned on. The difference judgment unit 423 is configured to judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration satisfies a first preset difference range. The steam adjustment unit 424 is configured to adjust the temperature value and / or humidity value of the steam released by the steam generating unit until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range when the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range.

[0118] In the technical solution of the embodiment of the present invention, an ion generation unit and a steam generation unit are arranged in the ventilation duct at the front end of the fan unit. The difference between the first oil fume concentration at the oil fume inlet of the range hood and the second oil fume concentration at the oil fume inlet of the fan is monitored in real time, and the mixing ratio of the oil fume and the ion concentration, temperature and humidity in the ventilation duct is adjusted correspondingly, effectively improving the sedimentation rate of the oil fume particles in the ventilation duct at the front end of the fan unit, improving the oil fume purification effect of the internal circulation of the range hood, reducing the emission of oil fume particles, reducing the oil fume smell discharged into the room, and achieving a better air purification function.

[0119] Based on the above technical solution, optionally, the control device further includes a second circulation execution module, and the second circulation execution module is used to execute at least one second circulation period; wherein, the second circulation execution module includes a first concentration acquisition unit, a second concentration acquisition unit, a difference judgment unit and a condition satisfaction unit. The first concentration acquisition unit is used to acquire the first oil fume concentration at the oil fume inlet of the range hood in real time; the second concentration acquisition unit is used to acquire the second oil fume concentration at the oil fume inlet of the fan in real time after the ion generation unit is turned on; the difference judgment unit is used to judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range; the condition satisfaction unit is used to determine that the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range.

[0120] Optionally, the steam adjustment unit 424 may specifically include a first adjustment subunit and a second adjustment subunit. The first adjustment subunit is used to adjust the temperature value of the steam released by the steam generation unit to the first temperature threshold and adjust the humidity value of the steam released by the steam generation unit to the first humidity threshold when the difference between the first oil fume concentration and the second oil fume concentration meets the second preset difference range; the second adjustment subunit is used to adjust the temperature value of the steam released by the steam generation unit to the second temperature threshold and adjust the humidity value of the steam released by the steam generation unit to the second humidity threshold when the difference between the first oil fume concentration and the second oil fume concentration meets the third preset difference range until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range; wherein, the first preset difference range, the second preset difference range and the third preset difference range do not overlap with each other, the lower limit value of the second preset difference range is greater than the upper limit value of the third preset difference range, the lower limit value of the third preset difference range is greater than the upper limit value of the first preset difference range, and the first temperature threshold is greater than the second temperature threshold, and the first humidity threshold is greater than the second humidity threshold.

[0121] Optionally, the interval lengths of the second preset difference range and the third preset difference range are the same, and the first temperature threshold is twice the second temperature threshold, and the first humidity threshold is twice the second humidity threshold.

[0122] Optionally, the control device further includes a reminder discovery module, which is configured to send a reminder for the steam generation unit to be maintained and serviced when the difference between the first oil fume concentration and the second oil fume concentration still fails to decrease to meet the first preset difference range after a first preset time threshold.

[0123] Optionally, the control device further includes a first fan regulation module, which is configured to adjust the gear of the fan unit to a short-term speed-up gear.

[0124] Optionally, the control device further includes a fan speed acquisition module and a second fan regulation module. The fan speed acquisition module is configured to continuously acquire the speed of the fan unit in real time after determining that the ion generation unit is not turned on; the second fan regulation module is configured to adjust the gear of the fan unit to a short-term speed-up gear when the speed of the fan unit is less than a first preset speed threshold.

[0125] The oil fume purification control device of the range hood provided by the embodiment of the present invention can execute the oil fume purification control method of the range hood provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0126] The embodiment of the present invention also provides a terminal control structure of a range hood, as Figure 7 shown. The range hood provided by the embodiment of the present invention includes: one or more processors 51 and a storage device 52; the processor 51 in the range hood can be one or more, Figure 7 taking one processor 51 as an example; the storage device 52 is configured to store one or more programs; when one or more programs are executed by one or more processors 51, one or more processors 51 are enabled to implement the oil fume purification control method of the range hood provided by any one of the embodiments of the present invention.

[0127] The range hood may further include: an input device 53 and an output device 54.

[0128] The processor 51, the storage device 52, the input device 53, and the output device 54 in the range hood may be connected through a bus or other means, Figure 7 taking connection through a bus as an example.

[0129] The storage device 52 in the range hood, as a readable storage medium, can be used to store one or more programs, and the programs can be software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the oil fume purification control method of the range hood provided by the embodiment of the present invention (for example, attached Figure 6The modules in the oil fume purification control device of the range hood shown include: a startup and operation module 410 for controlling the startup of the range hood and the operation of the fan unit; a first cycle execution module 420 for executing at least one first cycle period. Among them, the first cycle execution module 420 includes a first concentration acquisition unit 421, a second concentration acquisition unit 422, a difference judgment unit 423, and a steam regulation unit 424. The first concentration acquisition unit 421 is used to acquire the first oil fume concentration at the smoke inlet of the range hood in real time. The second concentration acquisition unit 422 is used to acquire the second oil fume concentration at the fan inlet in real time after determining that the ion generation unit is turned on. The difference judgment unit 423 is used to judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range. The steam regulation unit 424 is used to adjust the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range when the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range). The processor 51 executes various functional applications and data processing of the terminal device by running software programs, instructions, and modules stored in the storage device 52, that is, to implement the oil fume purification control method of the range hood in the above method embodiments.

[0130] The storage device 52 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function. The data storage area may store data created according to the use of the device, etc. In addition, the storage device 52 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the storage device 52 may further include a memory remotely set relative to the processor 51, and these remote memories may be connected to the device through a network. Examples of the above network include but are not limited to the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0131] The input device 53 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function control of the device. The output device 54 may include a display device such as a display screen.

[0132] And when one or more programs included in the above device are executed by one or more processors 51, the programs perform the following operations:

[0133] Control the startup of the range hood and the operation of the fan unit;

[0134] Execute at least one first cycle period; The first cycle period includes:

[0135] Acquire the first oil fume concentration at the smoke inlet of the range hood in real time;

[0136] After determining that the ion generation unit is turned on, the second oil fume concentration at the smoke inlet of the fan is obtained in real time;

[0137] Judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range;

[0138] When the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, adjust the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range.

[0139] An embodiment of the present invention also provides a readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it is used to execute the oil fume purification control method of the range hood provided in any one of the embodiments of the present invention. The control method includes:

[0140] Control the range hood to start and the fan unit to run;

[0141] Execute at least one first cycle; the first cycle includes:

[0142] Obtain the first oil fume concentration at the smoke inlet of the range hood in real time;

[0143] After determining that the ion generation unit is turned on, the second oil fume concentration at the smoke inlet of the fan is obtained in real time;

[0144] Judge in real time whether the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range;

[0145] When the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, adjust the temperature value and / or humidity value of the steam released by the steam generation unit until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range.

[0146] The computer storage medium of an embodiment of the present invention may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a readable storage medium. The readable storage medium may take various forms, including but not limited to: electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or components, or any combination of the above. More specific examples (non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the above. The readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device, or component.

[0147] The computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take various forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium may also be any computer-readable medium other than the readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, device, or component.

[0148] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the above.

[0149] Computer program code for performing the operations of the present invention may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including but not limited to, a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., by connecting through the Internet using an Internet service provider).

[0150] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, combinations with each other, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments may be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for controlling oil fume purification of a range hood, characterized in that: The range hood comprises a fan unit, an ion generating unit, a steam generating unit and a ventilation duct, one end of the ventilation duct being connected to the kitchen environment as a smoke inlet of the range hood, the other end of the ventilation duct being connected to the fan unit as a smoke inlet of the fan, and the ion generating unit and the steam generating unit being both arranged in the ventilation duct; The control method includes: Controlling the range hood to start and the fan unit to operate; Execute at least one first cycle; the first cycle includes: Real-time acquisition of a first oil fume concentration at a smoke inlet of the range hood; After determining that the ion generating unit is turned on, obtaining in real time a second oil fume concentration at the smoke inlet of the fan; determining in real time whether the difference between the first oil fume concentration and the second oil fume concentration satisfies a first preset difference range; When the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, the temperature value and / or humidity value of the steam released by the steam generating unit is adjusted until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

2. The control method according to claim 1, characterized in that: After the range hood is started and the fan unit is operated, the method further comprises: Execute at least one second cycle; the second cycle includes: Real-time acquisition of a first oil fume concentration at a smoke inlet of the range hood; After determining that the ion generating unit is turned on, obtaining in real time a second oil fume concentration at the smoke inlet of the fan; determining in real time whether the difference between the first oil fume concentration and the second oil fume concentration satisfies a first preset difference range; It is determined that the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range.

3. The control method according to claim 1, characterized in that: When the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, adjusting the temperature value and / or humidity value of the steam released by the steam generating unit until the difference between the first oil fume concentration and the second oil fume concentration satisfies the first preset difference range, comprising: When the difference between the first oil fume concentration and the second oil fume concentration satisfies a second preset difference range, adjusting the temperature of the steam released by the steam generating unit to a first temperature threshold, and adjusting the humidity of the steam released by the steam generating unit to a first humidity threshold; When the difference between the first oil fume concentration and the second oil fume concentration meets the third preset difference range, the temperature value of the steam released by the steam generating unit is adjusted to the second temperature threshold, and the humidity value of the steam released by the steam generating unit is adjusted to the second humidity threshold, until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range; wherein the first preset difference range, the second preset difference range and the third preset difference range do not overlap with each other, the lower limit value of the second preset difference range is greater than the upper limit value of the third preset difference range, the lower limit value of the third preset difference range is greater than the upper limit value of the first preset difference range, and the first temperature threshold is greater than the second temperature threshold, and the first humidity threshold is greater than the second humidity threshold.

4. The control method according to claim 3, characterized in that: The second preset difference range and the third preset difference range have the same interval length, the first temperature threshold is twice the second temperature threshold, and the first humidity threshold is twice the second humidity threshold.

5. The control method according to claim 3, characterized in that: When the difference between the first oil fume concentration and the second oil fume concentration meets a third preset difference range, the temperature of the steam released by the steam generating unit is adjusted to a second temperature threshold, and the humidity of the steam released by the steam generating unit is adjusted to a second humidity threshold, until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range, the method further includes: After a first preset time threshold, when the difference between the first oil fume concentration and the second oil fume concentration has not decreased to satisfy the first preset difference range, a reminder is issued that the steam generating unit needs maintenance.

6. The control method according to claim 1, characterized in that: When the difference between the first oil fume concentration and the second oil fume concentration does not satisfy the first preset difference range, while adjusting the temperature value and / or humidity value of the steam released by the steam generating unit, the method further includes: The gear position of the fan unit is adjusted to a short-time up-speed gear.

7. The control method according to claim 1 or 2, characterized in that: After obtaining the first oil fume concentration at the smoke inlet of the range hood in real time, the method further includes: After determining that the ion generating unit is not turned on, obtaining the rotation speed of the fan unit in real time; When the rotation speed of the fan unit is less than a first preset rotation speed threshold, the gear position of the fan unit is adjusted to a short-time up-speed gear.

8. A fume purification control device for a range hood, characterized in that: The range hood comprises a fan unit, an ion generating unit, a steam generating unit and a ventilation duct, one end of the ventilation duct being connected to the kitchen environment as a smoke inlet of the range hood, the other end of the ventilation duct being connected to the fan unit as a smoke inlet of the fan, and the ion generating unit and the steam generating unit being both arranged in the ventilation duct; The control device comprises: A start-up and operation module, used to control the range hood to start and the fan unit to operate; The first loop execution module is used to execute at least one first loop cycle; the first loop cycle includes: A first concentration acquisition unit, used for acquiring a first oil fume concentration at the smoke inlet of the range hood in real time; A second concentration acquisition unit, used to obtain a second oil fume concentration at the smoke inlet of the fan in real time after determining that the ion generating unit is turned on; A difference judgment unit, used for judging in real time whether the difference between the first oil fume concentration and the second oil fume concentration satisfies a first preset difference range; A steam regulating unit is used to adjust the temperature value and / or humidity value of the steam released by the steam generating unit when the difference between the first oil fume concentration and the second oil fume concentration does not meet the first preset difference range, until the difference between the first oil fume concentration and the second oil fume concentration meets the first preset difference range.

9. A range hood, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the oil fume purification control method for the range hood as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for controlling the oil fume purification of a range hood as described in any one of claims 1 to 7 is implemented.

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