Smoke exhaust automatic purification device, system and control method for smoke exhaust automatic purification

Abstract

The present invention provides a smoke exhaust automatic purification device, a system and a control method for smoke exhaust automatic purification, including: a wind speed acquisition unit for acquiring the current wind speed value of the oil fume gas passing through the purification ventilation duct; an electrostatic purification control unit for determining the current required purification air volume according to the duct parameters of the purification ventilation duct and the current wind speed value, determining the electrostatic generation amount of the electrostatic purification unit based on the purification air volume, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount; an electrostatic purification unit for generating an electrostatic field to adsorb particulate matters in the oil fume gas; and a fan control unit for comparing the purification air volume with the preset ideal air volume corresponding to the current working condition, and determining the operating air volume of the fan according to the comparison result. In this way, by setting a wind speed sensor to collect the actual wind speed in the air duct in real time, the oil fume air volume to be purified can be calculated in real time, and then the electrostatic generation amount of the electrostatic purification unit can be accurately controlled to reduce the generation of ozone.

Description

Technical Field

[0001] The present invention relates to the technical field of fume treatment, and particularly to an automatic fume exhaust purification device, a system and a control method for automatic fume exhaust purification. Background Art

[0002] With the increasing importance of environmental protection, whether it is a household kitchen, a large hotel, a unit canteen, etc., generally a fume exhaust purification equipment system is installed to uniformly filter and purify the fume in the common flue before discharging. In this case, usually a large fume exhaust fan is equipped on the main fan on the roof, and a complete fume purification system is configured. Among them, the fume purification system incorporates different combinations of various equipment systems such as electrostatic purifiers, ion purifiers, and odor purifiers. For the purification of the main fume particles of the purification equipment, an electrostatic purifier is mainly selected as the main configuration equipment. However, when the electrostatic purifier is working, a large amount of ozone will be generated during the high-voltage corona purification, which is harmful to the human body.

[0003] The existing fume purification systems generally adopt the method of fully opening the purifier, and the method of fully opening the purifier will generate an excessive amount of ozone, resulting in an excessive ozone amount. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an automatic fume exhaust purification device, a system and a control method for automatic fume exhaust purification, so as to calculate in real time the fume air volume to be purified, and then accurately control the electrostatic generation amount of the electrostatic purification unit to reduce the generation of ozone.

[0005] In a first aspect, the present invention provides an automatic fume exhaust purification device, including: a purification channel inlet, an electrostatic purification unit, a purification ventilation duct, and a fan control unit that are connected in sequence, and further including an electrostatic purification control unit provided on the electrostatic purification unit; the purification ventilation duct includes a wind speed acquisition unit; the fan control unit includes a fan; the wind speed acquisition unit, the electrostatic purification control unit, and the fan control unit are communicatively connected; the purification channel inlet is used for sucking in fume gas when the fan is started; the wind speed acquisition unit is used for acquiring the current wind speed value of the fume gas passing through the purification ventilation duct; the electrostatic purification control unit is used for determining the current required purification air volume of the purification ventilation duct according to the duct parameters of the purification ventilation duct and the current wind speed value, determining the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, determining the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount; the electrostatic purification unit is used for generating an electrostatic field to adsorb particulate matter in the fume gas; the fan control unit is used for comparing the purification air volume with the preset ideal air volume corresponding to the current working condition to obtain a comparison result, and determining the operating air volume of the fan according to the comparison result, so that the fan discharges the purified fume gas according to the operating air volume.

[0006] Further, the device further includes a photocatalytic unit; the photocatalytic unit is respectively connected to the electrostatic purification unit and the purification ventilation duct; the photocatalytic unit is configured to photocatalytically decompose the fume gas purified by the electrostatic purification unit and convey the photocatalytically decomposed fume gas to the purification ventilation duct.

[0007] Further, the device further includes a first reducer and a second reducer; the first reducer is arranged between the purification channel inlet and the electrostatic purification unit; the second reducer is arranged between the photocatalytic unit and the purification ventilation duct; the first reducer is configured to convey the fume gas inhaled from the purification channel inlet to the electrostatic purification unit; the second reducer is configured to convey the fume gas photocatalytically decomposed by the photocatalytic unit to the purification ventilation duct.

[0008] Further, the wind speed acquisition unit includes any one of a differential pressure converter, a wind speed sensor, and a thermal anemometer; when the duct width of the purification ventilation duct is greater than the duct length, the distance between the wind speed acquisition unit and the reducer opening of the second reducer is greater than 4 times the duct width; when the duct width of the purification ventilation duct is less than or equal to the duct length, the distance between the wind speed acquisition unit and the reducer opening of the second reducer is greater than 4 times the duct length.

[0009] Further, the device further includes an adsorption filter; the adsorption filter is arranged between the purification ventilation duct and the fan; the adsorption filter is configured to remove the odor in the fume gas conveyed by the purification ventilation duct, filter the ozone in the fume gas, and convey the processed fume gas to the fan.

[0010] Further, the device further includes a muffler; the muffler is connected to the fan; the muffler is configured to reduce the sound and noise of the fan.

[0011] Further, the device further includes an exhaust port hood; the exhaust port hood is arranged at the tail of the muffler; the exhaust port hood is configured to discharge the processed fume gas.

[0012] In a second aspect, the present invention provides a smoke exhaust automatic purification system, which includes a smoke collecting pipe and also includes the smoke exhaust automatic purification device according to any one of the above; the smoke collecting pipe is connected to the purification channel inlet of the smoke exhaust automatic purification device; the smoke collecting pipe is configured to acquire fume gas.

[0013] In a third aspect, a control method for automatic purification of smoke exhaust is applied to the automatic smoke exhaust purification device of any one of the above; the method includes: when the fan is started, sucking cooking fume gas through the inlet of the purification channel; collecting the current wind speed value of the cooking fume gas passing through the purification ventilation duct by the wind speed collection unit; determining, by the electrostatic purification control unit, the current required purification air volume of the purification ventilation duct according to the duct parameters of the purification ventilation duct and the current wind speed value, determining the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determining the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount; generating an electrostatic field by the electrostatic purification unit to adsorb particulate matter in the cooking fume gas; comparing, by the fan control unit, the purification air volume with the preset ideal air volume corresponding to the current working condition to obtain a comparison result, and determining the operating air volume of the fan according to the comparison result, so that the fan discharges the purified cooking fume gas according to the operating air volume.

[0014] In a fourth aspect, the present invention provides an electronic device, including a memory and a processor, where a computer program executable on the processor is stored on the memory, and when the processor executes the computer program, the method described above is implemented.

[0015] The present invention provides an automatic smoke exhaust purification device, a system and a control method for automatic smoke exhaust purification, including: a purification channel inlet, an electrostatic purification unit, a purification ventilation duct and a fan connected in sequence, and further including an electrostatic purification control unit arranged on the electrostatic purification unit; the purification ventilation duct includes a wind speed collection unit; the electrostatic purification control unit is communicatively connected with the wind speed collection unit; the purification channel inlet is used for sucking cooking fume gas when the fan is started; the wind speed collection unit is used for collecting the current wind speed value of the cooking fume gas passing through the purification ventilation duct; the electrostatic purification control unit is used for determining the current required purification air volume of the purification ventilation duct according to the duct parameters of the purification ventilation duct and the current wind speed value, determining the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determining the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount; the electrostatic purification unit is used for generating an electrostatic field to adsorb particulate matter in the cooking fume gas; the fan is used for discharging the purified cooking fume gas. In this way, by setting a wind speed sensor to collect the actual wind speed in the air duct in real time and sending the wind speed to the electrostatic purification control unit, the electrostatic purification unit can calculate the cooking fume air volume to be purified in real time and the fan control unit can control the operating speed of the fan, so as to accurately control the electrostatic generation amount of the electrostatic purification unit and the air volume of the fan, reduce the generation of ozone, and reduce the power consumption of the fan.

[0016] Other features and advantages of the present invention will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present invention. The objectives and other advantages of the present invention are realized and attained by the structure particularly pointed out in the specification, claims and drawings.

[0017] In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 The smoke exhaust automatic purification device provided for the first embodiment of the present invention;

[0020] Figure 2 Another smoke exhaust automatic purification device provided for the first embodiment of the present invention;

[0021] Figure 3 The schematic diagram of the smoke exhaust automatic purification system provided for the second embodiment of the present invention;

[0022] Figure 4 The flowchart of the control method for smoke exhaust automatic purification provided for the third embodiment of the present invention.

[0023] Reference numerals: 101 - inlet of the purification channel; 2011 - first diameter change; 2012 - second diameter change; 102 - electrostatic purification control unit; 103 - electrostatic purification unit; 202 - photocatalytic unit; 203 - purification ventilation duct; 104 - wind speed acquisition unit; 204 - adsorption filter; 105 - fan control unit; 205 - silencer; 206 - air outlet hood; 301 - smoke collecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0025] For the convenience of understanding this embodiment, the embodiments of the present invention will be introduced in detail below.

[0026] Embodiment 1:

[0027] Figure 1 This is the automatic smoke purification device provided by Embodiment 1 of the present invention.

[0028] Referring to Figure 1 , the automatic smoke purification device includes: a purification channel inlet 101, an electrostatic purification unit 103, a purification ventilation duct 203, and a fan control unit 105 connected in sequence, and further includes an electrostatic purification control unit 102 provided on the electrostatic purification unit; the purification ventilation duct 203 includes a wind speed acquisition unit 104; the fan control unit 105 includes a fan; the wind speed acquisition unit 104, the electrostatic purification control unit 102, and the fan control unit 105 are communicatively connected.

[0029] The purification channel inlet is used to suck in oil fume gas when the fan is started.

[0030] Here, when the fan is started, the oil fume gas is sucked in by the negative pressure on the air inlet surface of the purification channel and flows into the purification channel through the purification channel inlet.

[0031] The wind speed acquisition unit is used to acquire the current wind speed value of the oil fume gas passing through the purification ventilation duct.

[0032] Here, the wind speed acquisition unit continuously acquires the current wind speed value V of the oil fume gas passing through the purification ventilation duct.

[0033] The electrostatic purification control unit is used to determine the current required purification air volume of the purification ventilation duct according to the duct parameters of the purification ventilation duct and the current wind speed value, determine the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determine the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount.

[0034] Here, the duct parameters of the purification ventilation duct include the duct width W and duct height H of the purification ventilation duct. When there is V, the current purification air volume Q under the current working condition can be calculated: The so-called purification air volume (also known as volume flow rate) refers to the flow rate of the air passing through the cross-sectional area of the purification air duct. The purification air volume is shown in formula (1):

[0035] Q = VS (1)

[0036] Among them, the unit of the purification air volume is m 3 / min, the unit of the current wind speed value is m / sec, S is the cross-section of the purification ventilation duct, and the unit is m 2 ; and the duct cross-sectional area S can be calculated based on the designed duct size parameters and the wind speed value to obtain the purification air volume value of the air duct, as Figure 1The area of the square ventilation duct in: S = HW.

[0037] Specifically, after the electrostatic purification control unit obtains the current wind speed value, it calculates the required purification air volume Q under the current working condition, and correspondingly calculates the electrostatic purification equivalent value Q. j . That is, the electrostatic purification control unit automatically takes Q as the benchmark. When Q is large, it automatically increases Q. j ; when Q is small, it automatically decreases Q. j .

[0038] The electrostatic purification unit is used to generate an electrostatic field to adsorb particulate matter in the oil fume gas.

[0039] Here, while the electrostatic purifier in the electrostatic purification unit generates an electrostatic field to adsorb the oil fume gas, it will also generate high-voltage corona ultrasonic ozone O3 due to the high voltage. When the oil fume gas passes through the electrostatic purification unit, the particulate matter is adsorbed and filtered by the electrostatic field in the electrostatic purification unit, but a certain amount of ozone will be generated at the same time.

[0040] Specifically, the electrostatic purification control unit controls the electrostatic generation amount of the electrostatic purification unit according to Qj, so as to control in real time that the electrostatic purification unit generates an electrostatic field according to the electrostatic generation amount, and further can control the generation amount of ozone, thereby avoiding excessive electrostatic generation amount and generating too much ozone and discharging it to the back end.

[0041] The fan control unit is used to compare the purified air volume with the preset ideal air volume corresponding to the current working condition to obtain a comparison result, and determine the operating air volume of the fan according to the comparison result, so that the fan discharges the purified oil fume gas according to the operating air volume.

[0042] Here, the electrostatic purification unit sends the purified air volume to the fan control unit, so that the fan control unit compares the purified air volume with the preset ideal air volume corresponding to the current working condition to obtain a comparison result to calibrate the fan. When the purified air volume is greater than the preset ideal air volume, the fan control unit controls the fan to reduce the operating speed; when the purified air volume is less than or equal to the preset ideal air volume, the fan control unit controls the fan to increase the operating speed. Thus, the power consumption of the fan is reduced.

[0043] In one embodiment, referring to Figure 2 , the device further includes a photocatalytic unit 202; the photocatalytic unit 202 is respectively connected to the electrostatic purification unit 103 and the purification ventilation duct 203.

[0044] The photocatalytic unit is used to photocatalytically decompose the oil fume gas purified by the electrostatic purification unit and transport the photocatalytically decomposed oil fume gas to the purification ventilation duct.

[0045] Here, the photocatalytic unit includes at least one ion purifier. The ion purifier uses a highly concentrated electromagnetic field to ionize the particles in the air. The ionized particles continue to impact other dust and bacteria particles, like an avalanche effect, making all the dust particles passing through the purifier cavity charged. Subsequently, the flow of the entire ion wind is driven by the action of the electric field. Finally, all the dust and bacteria are adsorbed using a specially designed collection grid.

[0046] In one embodiment, referring to Figure 2 , the device further includes a first diameter reducer 2011 and a second diameter reducer 2012; the first diameter reducer is arranged between the purification channel inlet and the electrostatic purification unit; the second diameter reducer is arranged between the photocatalytic unit and the purification ventilation duct.

[0047] The first diameter reducer is used to convey the oil fume gas inhaled from the purification channel inlet to the electrostatic purification unit.

[0048] The second diameter reducer is used to convey the oil fume gas that has been photocatalytically treated by the photocatalytic unit to the purification ventilation duct.

[0049] Specifically, the oil fume gas inhaled from the purification channel inlet is conveyed to the electrostatic purification unit through the first diameter reducer. After being purified by the electrostatic purification unit, the oil fume gas is introduced into the photocatalytic unit. After being photocatalytically treated by the photocatalytic unit, it flows out through the second diameter reducer to the purification ventilation duct.

[0050] In one embodiment, referring to Figure 2 , the wind speed acquisition unit includes any one of a differential pressure transducer, a wind speed sensor, and a thermal anemometer; when the duct width of the purification ventilation duct is greater than the duct length, the distance between the wind speed acquisition unit and the diameter-changing port of the second diameter reducer is greater than 4 times the duct width; when the duct width of the purification ventilation duct is less than or equal to the duct length, the distance between the wind speed acquisition unit and the diameter-changing port of the second diameter reducer is greater than 4 times the duct length.

[0051] Here, the wind speed acquisition unit can use different acquisition devices to acquire the wind speed, such as: differential pressure transducer wind speed, wind speed sensor, thermal anemometer, etc., without being limited to the selection of the wind speed acquisition unit.

[0052] The airflow velocity of the wind speed flowing in the purification ventilation duct is often very uneven at different positions, especially after passing through a diameter-changing pipe or a bend pipe. The wind speed at different points in the same cross-section is very chaotic when it is discharged. Only by mastering the method of the acquisition point with relatively uniform wind speed can the acquired wind speed represent the actual wind speed in the pipeline and be used to calculate the current air volume.

[0053] Regarding the design and installation method of the wind speed acquisition unit of the wind speed acquisition system, based on the theoretical flow velocity model simulation design and combined with the actual verification effect, the best wind speed acquisition point is obtained. Referring to Figure 1, the collection device of the wind speed collection unit is arranged at a certain distance from the variable diameter opening of the second variable diameter. Among them, the distance between the collection point where the collection device is located and the variable diameter opening of the second variable diameter is L.

[0054] Specifically, when W > L for the purification ventilation duct, L > 4W; when W ≤ L for the purification ventilation duct, L > 4H.

[0055] When the collection point needs to be set on the height plane: the height H1 of the corresponding height plane satisfies When the collection point needs to be set on the width plane: the height H1 of the corresponding width plane satisfies That is, the middle position of the width plane or height plane dimension.

[0056] When the purification ventilation duct is a circular air duct, its installation condition: the sampling point L > 4D, where D is the duct diameter.

[0057] According to the above design method conditions, the collected wind speed value is a relatively accurate uniform flow wind speed value, that is, it represents the wind speed value of the entire purification ventilation duct.

[0058] In one embodiment, referring to Figure 2 , the device further includes an adsorption filter screen 204; the adsorption filter screen is arranged between the purification ventilation duct and the fan.

[0059] The adsorption filter screen is used to remove the odor in the oil fume gas conveyed by the purification ventilation duct, filter the ozone in the oil fume gas, and convey the treated oil fume gas to the fan.

[0060] Here, the adsorption filter screen uses aluminum honeycomb, plastic honeycomb, and paper honeycomb with through-hole structures as carriers, has excellent gas dynamics performance, small volume density, large specific surface area, high adsorption efficiency, and small wind resistance coefficient. It has the high adsorption performance of activated carbon, can be used for air purification, and remove volatile organic compounds such as formaldehyde, toluene, hydrogen sulfide, chlorobenzene and pollutants in the air. It has small air resistance and low energy consumption, can deodorize and remove odors under a certain air volume, purify the environment, and has a good purification effect.

[0061] In one embodiment, referring to Figure 2 , the device further includes a silencer 205; the silencer is connected to the fan.

[0062] The silencer is used to reduce the sound and noise of the fan.

[0063] In one embodiment, referring to Figure 2 , the device further includes an air outlet wind cap 206; the air outlet wind cap is arranged at the tail of the silencer.

[0064] The air outlet wind cap is used to discharge the treated oil fume gas.

[0065] Here, the fume gas is sucked in by the fan and becomes positive pressure. After being silenced and noise-reduced by the muffler, the relatively clean fume gas is discharged from the air outlet hood of the exhaust port.

[0066] The present invention provides a smoke exhaust automatic purification device, including: a purification channel inlet, an electrostatic purification unit, a purification ventilation duct, and a fan that are connected in sequence, and further includes an electrostatic purification control unit provided on the electrostatic purification unit; the purification ventilation duct includes a wind speed acquisition unit; the electrostatic purification control unit is communicatively connected to the wind speed acquisition unit; the purification channel inlet is used to suck in fume gas when the fan is started; the wind speed acquisition unit is used to acquire the current wind speed value of the fume gas passing through the purification ventilation duct; the electrostatic purification control unit is used to determine the current required purification air volume of the purification ventilation duct according to the duct parameters and the current wind speed value of the purification ventilation duct, determine the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determine the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount; the electrostatic purification unit is used to generate an electrostatic field to adsorb particulate matter in the fume gas; the fan is used to discharge the purified fume gas. In this way, by setting a wind speed sensor to collect the actual wind speed in the air duct in real time and sending the wind speed to the electrostatic purification control unit, the electrostatic purification unit can calculate the fume air volume to be purified in real time, and the fan control unit can control the running speed of the fan, thereby accurately controlling the electrostatic generation amount of the electrostatic purification unit and the air volume of the fan, reducing the generation of ozone, and reducing the power consumption of the fan.

[0067] Embodiment 2:

[0068] Figure 3 It is a schematic diagram of the smoke exhaust automatic purification system provided in Embodiment 2 of the present invention.

[0069] Refer to Figure 3 , the smoke exhaust automatic purification system includes a smoke collecting pipe 301, and also includes the above-mentioned smoke exhaust automatic purification device; the smoke collecting pipe 301 is connected to the purification channel inlet 101 of the smoke exhaust automatic purification device;

[0070] The smoke collecting pipe is used to obtain fume gas.

[0071] The present invention provides an automatic smoke purification system, comprising: a purification channel inlet, an electrostatic purification unit, a purification ventilation duct, and a fan that are connected in sequence, and further comprising an electrostatic purification control unit disposed on the electrostatic purification unit; the purification ventilation duct includes a wind speed acquisition unit; the electrostatic purification control unit is communicatively connected to the wind speed acquisition unit; the purification channel inlet is configured to suck in oil fume gas when the fan is started; the wind speed acquisition unit is configured to acquire the current wind speed value of the oil fume gas passing through the purification ventilation duct; the electrostatic purification control unit is configured to determine the current required purification air volume of the purification ventilation duct according to the duct parameters of the purification ventilation duct and the current wind speed value, determine the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determine the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount; the electrostatic purification unit is configured to generate an electrostatic field to adsorb particulate matter in the oil fume gas; the fan is configured to discharge the purified oil fume gas. In this way, by setting a wind speed sensor to collect the actual wind speed in the air duct in real time and sending the wind speed to the electrostatic purification control unit, the oil fume air volume to be purified can be calculated in real time, and then the electrostatic generation amount of the electrostatic purification unit can be accurately controlled, reducing the generation of ozone.

[0072] Embodiment III:

[0073] Figure 4 It is a flowchart of the control method for automatic smoke purification provided in Embodiment III of the present invention.

[0074] Referring to Figure 4 , the method applied to the above automatic smoke purification device includes:

[0075] Step S101, when the fan is started, suck in oil fume gas through the purification channel inlet.

[0076] Step S102, collect the current wind speed value of the oil fume gas passing through the purification ventilation duct through the wind speed acquisition unit.

[0077] Step S103, through the electrostatic purification control unit, determine the current required purification air volume of the purification ventilation duct according to the duct parameters of the purification ventilation duct and the current wind speed value, determine the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determine the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount.

[0078] Step S104, generate an electrostatic field through the electrostatic purification unit to adsorb particulate matter in the oil fume gas.

[0079] In step S105, the purification air volume is compared with the preset ideal air volume corresponding to the current working condition through the fan control unit to obtain a comparison result, and the operating air volume of the fan is determined according to the comparison result, so that the fan discharges the purified oil fume gas according to the operating air volume.

[0080] The present invention provides an automatic oil fume purification method, including: a purification channel inlet, an electrostatic purification unit, a purification ventilation duct, and a fan connected in sequence, and further including an electrostatic purification control unit provided on the electrostatic purification unit; the purification ventilation duct includes a wind speed acquisition unit; the electrostatic purification control unit is communicatively connected to the wind speed acquisition unit; the purification channel inlet is used to suck in oil fume gas when the fan starts; the wind speed acquisition unit is used to acquire the current wind speed value of the oil fume gas passing through the purification ventilation duct; the electrostatic purification control unit is used to determine the required purification air volume of the purification ventilation duct according to the duct parameters of the purification ventilation duct and the current wind speed value, determine the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determine the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount; the electrostatic purification unit is used to generate an electrostatic field to adsorb particulate matter in the oil fume gas; the fan is used to discharge the purified oil fume gas. In this way, by setting a wind speed sensor to collect the actual wind speed in the air duct in real time and sending the wind speed to the electrostatic purification control unit, the oil fume air volume to be purified can be calculated in real time, and then the electrostatic generation amount of the electrostatic purification unit can be accurately controlled to reduce the generation of ozone.

[0081] An embodiment of the present invention further provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps of the control method for automatic oil fume purification provided in the above embodiment are implemented.

[0082] The computer program product provided by the embodiment of the present invention includes a computer-readable storage medium storing program code, and the instructions included in the program code can be used to execute the method described in the foregoing method embodiment. For specific implementation, reference can be made to the method embodiment, and details are not described herein again.

[0083] Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the above-described systems and devices can refer to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

[0084] In addition, in the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] If the above-mentioned functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0086] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0087] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field of the present invention can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims described herein.

Claims

1. An automatic smoke purification device, characterized in that, Comprising: A purification channel inlet, an electrostatic purification unit, a purification ventilation duct, and a fan control unit that are connected in sequence. It further includes an electrostatic purification control unit provided on the electrostatic purification unit; the purification ventilation duct includes a wind speed acquisition unit; the fan control unit includes a fan; the wind speed acquisition unit, the electrostatic purification control unit, and the fan control unit are communicatively connected; The purification channel inlet is used to suck in fume gas when the fan is started; The wind speed acquisition unit is used to acquire the current wind speed value of the fume gas passing through the purification ventilation duct; The electrostatic purification control unit is used to determine the current required purification air volume of the purification ventilation duct according to the duct parameters of the purification ventilation duct and the current wind speed value, determine the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determine the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate an electrostatic field according to the electrostatic generation amount; The electrostatic purification unit is used to generate an electrostatic field to adsorb particulate matter in the fume gas; The fan control unit is used to compare the purification air volume with the preset ideal air volume corresponding to the current working condition to obtain a comparison result, and determine the operating air volume of the fan according to the comparison result, so that the fan discharges the purified fume gas according to the operating air volume.

2. The device according to claim 1, characterized in that The device further includes a photocatalytic unit; the photocatalytic unit is respectively connected to the electrostatic purification unit and the purification ventilation duct; The photocatalytic unit is used to photocatalytically decompose the fume gas purified by the electrostatic purification unit and transport the photocatalytically decomposed fume gas to the purification ventilation duct.

3. The device according to claim 2, wherein The device further includes a first reducer and a second reducer; the first reducer is arranged between the purification channel inlet and the electrostatic purification unit; the second reducer is arranged between the photocatalytic unit and the purification ventilation duct; The first reducer is used to transport the fume gas sucked in by the purification channel inlet to the electrostatic purification unit; The second reducer is used to transport the fume gas photocatalytically decomposed by the photocatalytic unit to the purification ventilation duct.

4. The device according to claim 3, characterized in that The wind speed acquisition unit includes any one of a differential pressure transducer, a wind speed sensor, and a thermal anemometer; when the duct width of the purification ventilation duct is greater than the duct length, the distance between the wind speed acquisition unit and the reducer orifice of the second reducer is greater than 4 times the duct width; when the duct width of the purification ventilation duct is less than or equal to the duct length, the distance between the wind speed acquisition unit and the reducer orifice of the second reducer is greater than 4 times the duct length.

5. The device according to claim 3, characterized in that The device further includes an adsorption filter; the adsorption filter is arranged between the purification ventilation duct and the fan; The adsorption filter is used to remove the odor in the fume gas transported by the purification ventilation duct, filter ozone in the fume gas, and transport the treated fume gas to the fan.

6. The device according to claim 5, characterized in that The device further includes a silencer; the silencer is connected to the fan; The silencer is used to reduce the sound and noise of the fan.

7. The device according to claim 6, characterized in that, The device further includes an exhaust port hood; the exhaust port hood is arranged at the tail of the silencer; The exhaust air cap is used to discharge the treated oil fume gas.

8. An automatic smoke purification system, characterized in that, It includes a smoke collecting pipe and also includes the smoke exhaust automatic purification device according to any one of claims 1-7; the smoke collecting pipe is connected to the purification channel inlet of the smoke exhaust automatic purification device; The smoke collecting pipe is used to obtain the oil fume gas.

9. A control method for automatic purification of smoke exhaust, characterized in that, Applied to the smoke exhaust automatic purification device according to any one of claims 1-7 above; the method includes: When the fan is started, the oil fume gas is inhaled through the purification channel inlet; Collect the current wind speed value of the oil fume gas passing through the purification ventilation pipe through the wind speed collecting unit; Through the electrostatic purification control unit, according to the pipe parameters of the purification ventilation pipe and the current wind speed value, determine the current required purification air volume of the purification ventilation pipe, determine the electrostatic purification equivalent value of the electrostatic purification unit based on the purification air volume, and determine the electrostatic generation amount of the electrostatic purification unit according to the electrostatic purification equivalent value, so as to control the electrostatic purification unit to generate An electrostatic field; Generate an electrostatic field through the electrostatic purification unit to adsorb the particulate matter in the oil fume gas; Compare the purification air volume with the preset ideal air volume corresponding to the current working condition through the fan control unit to obtain a comparison result, and determine the operating air volume of the fan according to the comparison result, so that the fan discharges the purified oil fume gas according to the operating air volume.

10. An electronic device, comprising a memory and a processor, wherein a computer program capable of running on the processor is stored on the memory, characterized in that When the processor executes the computer program, it implements the method according to claim 9 above.

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