Heating self-cleaning purification filter element equipment and control method thereof

Abstract

The present invention belongs to the technical field of oil fume purification, solves the technical problem of the difficulty in cleaning and maintaining purification equipment such as integrated stoves or range hoods in the prior art, and provides a heating self-cleaning purification filter element device and its control method. The heating self-cleaning purification filter element device includes: a frame, a filter element structure, which is arranged in the frame, including a first electrode plate and a second electrode plate, the first electrode plate and the second electrode plate are arranged alternately, and the first electrode plate and the second electrode plate generate an electric field that adsorbs the oil fume mixture when energized; a heating element, which is used to heat and clean the first electrode plate and / or the second electrode plate of the filter element structure to remove the oil fume mixture attached to the first electrode plate and / or the second electrode plate. The present invention has the advantage of simple cleaning and maintenance of the filter element structure in the purification equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of oil fume purification, and in particular to a heating self-cleaning purification filter element device and a control method thereof. Background Art

[0002] Cooking fumes refer to the mixed waste gases produced during the cooking or processing of food, through a series of reactions, including the volatilization, cracking, and thermal oxidation of volatile organic compounds and oils. Traditional cooking methods, such as stir-frying, frying, and deep-frying, produce large amounts of cooking fumes containing short-chain aldehydes, ketones, and polycyclic aromatic hydrocarbons (PAHs). Many PAHs are carcinogenic and mutagenic. Directly releasing this mixed waste gas into the air can cause air pollution and even harm human health.

[0003] Popular kitchen appliances, such as range hoods, typically only have a single fan that exhausts fumes directly from the kitchen to the outdoors. This merely transfers fumes from one indoor space to the outdoors, leaving harmful fumes unexposed and causing air pollution. Furthermore, range hoods are susceptible to oil contamination over extended periods of operation. The thick oil deposits on the fan motor and impeller reduce the fan's efficiency, resulting in poor extraction of fumes that permeate the kitchen space. More seriously, this harms the respiratory health of those working in the kitchen for extended periods, pollutes the flue gas duct, and creates a fire hazard. Subsequently, the idea of installing an electric field in the exhaust fan to absorb the oil-fume mixture emerged. However, this field is typically built-in, making it difficult to clean the fumes once attached to it, requiring the field to be disassembled for cleaning. Consequently, existing purification equipment, such as integrated stoves or range hoods, presents a technical problem of difficulty in cleaning and maintenance. Summary of the Invention

[0004] In view of this, an embodiment of the present invention provides a heating self-cleaning purification filter device and a control method thereof, which are used to solve the technical problem of difficulty in cleaning and maintaining purification equipment such as integrated stoves or range hoods in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a heating self-cleaning purification filter element device, comprising:

[0006] Frame,

[0007] The filter element structure is provided in the frame, and includes a first electrode plate and a second electrode plate, wherein the first electrode plate and the second electrode plate are arranged in an intersecting manner, and the spacing between the first electrode plate and the second electrode plate is required to generate an electric field that adsorbs the oil smoke mixture after power is applied;

[0008] The heating element is used to heat and clean the first electrode plate and / or the second electrode plate of the filter element structure to remove the oil-fume mixture attached to the first electrode plate and / or the second electrode plate.

[0009] Preferably, the filter element structure includes an oxidation catalytic coating provided on the first electrode plate and / or the second electrode plate.

[0010] Preferably, the heating element is located in the first electrode plate and / or the second electrode plate.

[0011] Preferably, a connecting piece is provided in the frame, and the heating element is located in the connecting piece, and the connecting piece can conduct heat to the first electrode plate and / or the second electrode plate.

[0012] Preferably, the heating self-cleaning purification filter element device further includes: a shell covering the frame, the heating element is attached to the shell, and the shell has thermal conductivity and can conduct heat to the first electrode plate and / or the second electrode plate.

[0013] Preferably, the filter element structure is connected to the frame, the heating element is attached to the frame, and the frame has thermal conductivity and can conduct heat to the first electrode plate and / or the second electrode plate.

[0014] Preferably, the connecting member includes a first connecting member and a second connecting member, the first connecting member connects the frame and the first electrode plate, the second connecting member connects the frame and the second electrode plate, and the heating member heats the first connecting member and the second connecting member.

[0015] In a second aspect, the present invention provides a control method for a heated self-cleaning purification filter element device, the method comprising: obtaining an operating voltage or operating power between a first electrode plate and a second electrode plate, and determining whether the operating voltage is lower than a preset value or whether the operating power is lower than a preset power value;

[0016] If the operating voltage is lower than a preset value or the operating power is lower than the preset power value, the heating element is heated to a preset temperature range;

[0017] determining whether a preset heating end condition is reached, and if so, controlling the heating element to stop heating the filter element structure;

[0018] The first electrode plate and the second electrode plate are arranged to be spaced apart and crossed, and the spacing between the first electrode plate and the second electrode plate needs to be sufficient to generate an electric field for adsorbing the oil smoke mixture after power is applied.

[0019] Preferably, the determining whether the preset heating end condition is met includes: obtaining the total weight change of the first electrode plate and the second electrode plate in real time, and if the total weight change is within a preset range, determining that the preset heating end condition is met.

[0020] Preferably, after determining whether a preset heating end condition is reached, the method further comprises: obtaining a rate of change of the total weight of the first electrode plate and the second electrode plate, and controlling the heating temperature of the heating element according to the rate of change.

[0021] Preferably, the determining whether the preset heating end condition is reached further comprises: obtaining the total heating time, and if the total heating time reaches a preset value, determining that the heating result reaches the preset end condition.

[0022] Preferably, a first sensor and a second sensor for detecting the concentration of the oil-fume mixture are respectively provided upstream and downstream of the filter element structure, and the control method further comprises:

[0023] Obtaining a first concentration value A of the oil smoke mixture detected by the first sensor;

[0024] Obtaining a second concentration value B of the oil smoke mixture detected by the second sensor;

[0025] Obtaining a purification efficiency of the filter element structure according to the first concentration value A and the second concentration value B;

[0026] When the purification efficiency is lower than a preset purification efficiency, the heating element is turned on to clean the filter element structure.

[0027] Preferably, the determining whether a preset heating termination condition is reached includes:

[0028] acquiring in real time a surface image of the first electrode plate and / or the second electrode plate after being heated, and comparing the surface image with the preset image to obtain a comparison result;

[0029] It is determined whether the heating result reaches a preset heating end condition according to the comparison result.

[0030] Preferably, there are multiple heating elements, and the control method includes:

[0031] Dividing the first electrode plate and the second electrode plate into a plurality of areas;

[0032] respectively acquiring initial images of the first electrode plate and / or the second electrode plate corresponding to each of the regions;

[0033] Comparing the initial image with a preset image to obtain a comparison result;

[0034] The heating element in the corresponding area is controlled to be turned on or off according to the comparison result.

[0035] In summary, the beneficial effects of the present invention are as follows:

[0036] The first electrode plate and / or the second electrode plate of the filter element structure are heated and cleaned by a heating element to remove the oil smoke mixture attached to the first electrode plate and / or the second electrode plate, thereby reducing the tedious operations of disassembling and assembling the filter element structure and manually cleaning the filter element structure during cleaning and maintenance of the filter element structure, and making it more convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work, and these are all within the scope of protection of the present invention.

[0038] Figure 1a This is a schematic structural diagram of an integrated stove in Example 1 of the present invention;

[0039] Figure 1b This is a schematic diagram of the structural decomposition of the integrated stove in Example 1 of the present invention;

[0040] Figure 1c This is a schematic diagram of the structural decomposition of the integrated stove in Example 1 of the present invention;

[0041] Figure 2a This is a schematic diagram of the structural decomposition of the integrated stove in Example 2 of the present invention;

[0042] Figure 2b This is a schematic diagram of the structural decomposition of the integrated stove in Example 2 of the present invention;

[0043] Figure 3a This is a schematic diagram of the structural decomposition of the integrated stove in Example 3 of the present invention;

[0044] Figure 4a This is a schematic diagram of the structure decomposition of the range hood in Example 4 of the present invention;

[0045] Figure 5a This is a schematic diagram of the structural decomposition of the filter element structure in Example 5 of the present invention;

[0046] Figure 5b This is a schematic structural diagram of the connection structure in Example 5 of the present invention;

[0047] Figure 6a This is a schematic diagram of the structural decomposition of the modular filter element device in Example 6 of the present invention;

[0048] Figure 6b for Figure 6a The main view;

[0049] Figure 6c This is a schematic diagram of the structural decomposition of the modular filter element device in Example 6 of the present invention;

[0050] Figure 7a Schematic diagram of the structure of the filter element in Example 7 of the present invention;

[0051] Figure 7b This is a schematic diagram of the structural decomposition of the filter element structure in Example 7 of the present invention;

[0052] Figure 7c This is a schematic structural diagram of another form of the filter element structure in Example 7 of the present invention;

[0053] Figure 7d This is a schematic structural diagram of another form of the filter element structure in Example 7 of the present invention;

[0054] Figure 7e for Figure 7d Schematic diagram of the structural decomposition;

[0055] Figure 7f A schematic structural diagram of another form of the adsorption assembly in Example 7 of the present invention;

[0056] Figure 7g for Figure 7f Schematic diagram of the structural decomposition;

[0057] Figure 7h This is a schematic structural diagram of another form of the adsorption component in Example 7 of the present invention;

[0058] Figure 8a Schematic diagram of the filter element structure in Example 8 of the present invention;

[0059] Figure 8b This is a schematic diagram of the structural decomposition of the filter element structure in Example 8 of the present invention;

[0060] Figure 8c A simulation diagram of the electric field in the ionization zone of a prior art for comparison when determining the operating voltage and / or operating power of the filter element structure;

[0061] Figure 8d This is a simulated diagram of the electric field in the ionization zone obtained by using an improved method to determine the operating voltage and / or operating power of the filter element structure;

[0062] Figure 8e A simulation diagram of the electric field in the adsorption area of a prior art for comparison when determining the operating voltage and / or operating power of the filter element structure;

[0063] Figure 8f This is a simulated diagram of the electric field in the adsorption area obtained by using an improved method to determine the operating voltage and / or operating power of the filter element structure;

[0064] Figure 9a Schematic diagram of the structure of the filter element in Example 9 of the present invention;

[0065] Figure 9b Schematic diagram of the structure of the pole assembly in Example 9 of the present invention;

[0066] Figure 9c This is a schematic diagram of the structural decomposition of the filter element structure in Example 9 of the present invention;

[0067] Figure 10a This is a schematic diagram of the structural decomposition of the filter element structure in Example 10 of the present invention;

[0068] Figure 10b for Figure 10a A magnified schematic diagram of point A in the middle;

[0069] Figure 10c This is a schematic diagram of the structural decomposition of another embodiment of the filter element structure in Example 10 of the present invention;

[0070] Figure 10d for Figure 10c A magnified schematic diagram of point B in the middle;

[0071] Figure 11a Schematic diagram of the filter element structure of the integrated stove in Example 11 of the present invention;

[0072] Figure 11b This is a schematic structural diagram of another filter element structure in Example 11 of the present invention;

[0073] Figure 12a Schematic diagram of the structure of the filter element in Example 12 of the present invention;

[0074] Figure 12b This is an exploded schematic diagram of another installation position of the heating element in Example 12 of the present invention;

[0075] Figure 12c This is an exploded schematic diagram of another installation position of the heating element in Example 12 of the present invention;

[0076] Figure 13 This is a flow chart of Example 13 of the present invention;

[0077] Figure 14 This is a flow chart of Example 14 of the present invention;

[0078] Figure 15 This is a flow chart of Example 15 of the present invention;

[0079] Figure 16 This is a flow chart of Example 16 of the present invention;

[0080] Figure 17 This is a flow chart of Example 17 of the present invention. DETAILED DESCRIPTION

[0081] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this application, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting this application. Moreover, the terms "include", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, elements defined by the phrase "comprising..." do not preclude the presence of other identical elements in the process, method, article, or device that includes the elements. The embodiments of the present application and the various features therein may be combined with each other if there is no conflict, and all are within the scope of protection of the present application.

[0082] The present invention mainly focuses on technical improvements and upgrades to oil fume purification equipment, such as integrated stoves or range fumes extraction devices. A filter element structure is provided in the purification equipment to improve the purification efficiency of the oil fume mixture by the purification equipment. After the oil fume mixture gas is processed by the purification equipment, the gas discharged into the environment is less polluting to the environment. While reducing pollutant emissions, the automation and intelligence level of the purification equipment are improved, thereby enhancing the user experience. The following first introduces the structural design of the purification equipment of the present invention as an integrated stove or range fumes extraction device.

[0083] Implementation Method 1

[0084] Example 1

[0085] Embodiment 1 of the present invention provides an integrated stove as a kitchen appliance for cooking, etc. Figure 1a 、 Figure 1b as well as Figure 1c As shown, the integrated stove includes: a stove 10; a filter element structure 1, which is arranged on one side of the stove 10 and is used to generate an electric field to ionize and adsorb the oil smoke generated from the stove 10; a negative pressure mechanism 5, which is arranged on one side of the filter element structure 1 and is used to generate negative pressure so that the oil smoke is adsorbed and purified by the filter element structure 1.

[0086] In this embodiment, a user generates oil smoke while cooking at stovetop 10. Filter structure 1 is positioned at the air outlet of negative pressure mechanism 5. The air outlet of negative pressure mechanism 5 blows the oil smoke toward filter structure 1, where it generates an electric field that ionizes and adsorbs the oil smoke mixture. By providing negative pressure mechanism 5 to generate negative pressure and filter structure 1 to adsorb the oil smoke mixture, the oil smoke mixture generated on stovetop 10 is immediately drawn toward filter structure 1 by negative pressure mechanism 5. This reduces the amount of oil smoke mixture emitted outdoors and the potential for air pollution. It is worth noting that in this embodiment, the direction of the airflow containing the oil smoke mixture is not restricted. Filter structure 1 can be positioned at either the air inlet or the air outlet of negative pressure mechanism 5. The negative pressure mechanism 5 only needs to be positioned to allow the oil smoke mixture to pass through filter structure 1.

[0087] Furthermore, the casing 82 is arranged on one side of the stove 10 , and the outer wall of the filter element structure 1 is adapted to the inner wall of the casing 82 .

[0088] In this embodiment, a casing 82 is provided to form a relatively sealed space inside the casing 82, thereby preventing the oil fume mixture from escaping from other places, thereby improving the effective ionization and adsorption of the oil fume mixture. In addition, the air inlet is provided above the stove 10. As the oil fume mixture generated on the stove 10 is heated and moves upward, it moves to the air inlet and is directly adsorbed by the negative pressure generated by the negative pressure mechanism 5 into the casing 82, and then enters the negative pressure chamber. The present invention arranges the air inlet above the stove 10 to facilitate the adsorption of the oil fume mixture. The size of the casing 82 is adapted to the size of the filter element structure 1, so that the effective electric field inside the filter element structure 1 fills the entire inner diameter of the casing 82, enabling all the oil fume mixture to completely pass through the air flow channel designed in the filter element structure, thereby being efficiently ionized and adsorbed in the filter element structure.

[0089] Furthermore, the filter element structure 1 is detachably connected to the housing 82 .

[0090] In this embodiment, the filter element structure 1 is detachably connected to the housing 82. When the filter element structure 1 absorbs a large amount of oil smoke, or even fails, the filter element structure 1 needs to be replaced or cleaned. The filter element structure 1 can be easily removed from the housing 82 and replaced, which facilitates maintenance and cleaning of the filter element structure 1.

[0091] Furthermore, the integrated stove also includes: a cleaning component for cleaning the oil smoke mixture adsorbed and deposited on the filter element structure 1.

[0092] In this embodiment, in order to make the integrated stove have a self-cleaning function, the cleaning component further includes: an ultraviolet light source 91, and a catalyst layer provided on the filter element structure 1. The ultraviolet light source 91 decomposes the oil fume mixture attached to the filter element structure 1 under the catalytic action of the catalyst layer.

[0093] In this embodiment, the ultraviolet light source 91 is disposed at the top of the housing 82, facing the filter structure 1. The ultraviolet light source is disposed at the top of the housing 82 and irradiates the filter structure 1. When too much oil smoke accumulates on the filter structure 1, the ultraviolet light source is activated to degrade the oil smoke on the filter structure 1, thereby reducing the accumulation of oil smoke on the filter structure 1, further improving the purification effect of the filter structure 1, and enhancing the oil smoke purification efficiency. The filter structure 1 is coated with a catalyst layer. The catalyst layer is configured as a photocatalyst, which is a relatively common catalyst, thereby increasing the rate at which the oil smoke mixture is degraded.

[0094] Further, if Figure 1c As shown, the cleaning component includes: a heating element 92, which is arranged corresponding to the filter element structure 1. The filter element structure 1 is provided with an oxidation catalytic coating. The heating element 92 heats the filter element structure 1 with the assistance of the oxidation catalytic coating to remove the oil smoke mixture attached to the filter element structure 1.

[0095] In this embodiment, the cleaning assembly can be configured as a heating element 92, such as an electric heating wire, which is disposed on the filter element structure 1 to heat and degrade the oil smoke. In this case, the catalyst layer is configured as a catalytic metal oxide such as copper oxide. The catalyst can be various catalysts known in the art that are effective in degrading oil smoke. Since this aspect of the catalyst is known in the art, the present invention does not limit it.

[0096] Furthermore, the integrated stove further includes: a filter assembly 6, which is arranged upstream of the filter element structure 1 along the flow direction of the oil-fume mixture.

[0097] In this embodiment, the filter assembly 6 is configured as a filter screen with a removable corresponding cover positioned at the air inlet. This filter screen primarily filters out large oil smoke particles, thereby increasing the ionization adsorption rate of the filter element structure 1. Furthermore, the filter screen prevents large oil smoke particles from entering the filter element structure 1, thereby preventing them from affecting the operating voltage and operating time of the filter element structure 1, thereby increasing the service life of the filter element structure 1.

[0098] Example 2

[0099] The embodiment 2 of the present invention is improved on the basis of the embodiment 1. The difference from the embodiment 1 is that the negative pressure mechanism is arranged upstream of the filter element structure 1. Figure 2a As shown, the integrated stove includes: a stove 10, a negative pressure mechanism 5, and the air inlet of the negative pressure mechanism 5 is arranged corresponding to the stove 10; a filter element structure 1, and the filter element structure 1 is arranged corresponding to the air outlet of the negative pressure mechanism 5; wherein, the negative pressure mechanism 5 transfers the oil smoke generated at the stove 10 to the filter element structure 1, and the filter element structure 1 is used to generate an electric field to ionize and adsorb the oil smoke discharged by the negative pressure mechanism 5.

[0100] In this embodiment, a gas stove or electric stove is installed on the stovetop 10; typically, two or more gas stoves are installed. In this embodiment, when a user cooks on the stovetop 10, cooking, or otherwise generating oil fumes, the filter structure 1 is positioned relative to the air outlet of the negative pressure mechanism 5. The air outlet of the negative pressure mechanism 5 blows the oil fumes toward the filter structure 1, where it generates an electric field that ionizes and adsorbs the oil-fume mixture. The negative pressure mechanism 5 generates negative pressure, and the filter structure 1 adsorbs the oil-fume mixture. This ensures that the oil-fume mixture generated on the stovetop 10 is immediately drawn toward the filter structure 1 by the negative pressure mechanism 5, thereby reducing the possibility of the oil-fume mixture being discharged outdoors and contaminating the air. Furthermore, the negative pressure mechanism 5 is positioned directly on the stovetop 10, ensuring that the oil-fume mixture is immediately adsorbed by the negative pressure mechanism 5 upon generation, preventing the oil-fume mixture from lingering in front of the stovetop 10 and interfering with the user's cooking. This solves the technical problem of existing range hoods that suffer from untimely exhaust and result in inconvenient operation. It provides the technical advantage of rapidly extracting oil fumes.

[0101] Preferably, the integrated stove further comprises a shell 81 , an air outlet duct 84 is provided inside the shell 81 , and the air outlet duct is connected to the air outlet portion of the negative pressure mechanism 5 .

[0102] In this embodiment, the negative pressure mechanism 5 discharges the oil-fume mixture into the filter element structure 1 through the air outlet duct, so that all the oil-fume mixture can enter the filter element structure 1 .

[0103] Further, combined Figure 2a as well as Figure 2b As shown, the filter element structure 1 is disposed in the air outlet duct 84 .

[0104] In this embodiment, the outer contour of the filter element structure 1 is adapted to the inner diameter of the air outlet duct, allowing the effective electric field within the filter element structure 1 to fill the entire inner diameter of the air outlet duct, effectively ionizing and adsorbing the entire oil-fume mixture. Furthermore, the provision of the air outlet duct creates a relatively sealed space within the duct, thereby preventing the oil-fume mixture from escaping elsewhere and increasing the effective ionization and adsorption of the oil-fume mixture.

[0105] Preferably, the air outlet duct 84 is located below the stove 10 .

[0106] In this embodiment, the air outlet duct 84 connects to the housing and is located below the cooktop 10, with the airflow flowing from top to bottom. The oil fume mixture is generated on the cooktop 10, purified by the filter structure 1, and then exhausted from below the cooktop 10. The clean oil fume is then exhausted from the bottom of the housing.

[0107] Furthermore, the cooktop 10 is arranged on the upper part of the shell 81; a negative pressure chamber 85 is provided in the shell 81, and the negative pressure mechanism 5 is provided in the negative pressure chamber 85, and the negative pressure chamber 85 is connected to the upper end surface of the shell 81.

[0108] In this embodiment, the negative pressure generated by the negative pressure mechanism 5 acts directly on the upper end surface of the housing, that is, directly on the stove 10. This allows the oil fume mixture generated by the stove 10 to be directly affected by the negative pressure and enter the negative pressure cavity, further accelerating the rate at which the oil fume generated in front of the stove 10 is adsorbed. Furthermore, a negative pressure cavity 85 is provided in the housing. The opening has a relatively small area, thereby increasing the pressure effect of the negative pressure generated by the negative pressure mechanism 5.

[0109] Preferably, the integrated stove further includes: a casing 82 , which is arranged above the shell 81 and is connected to the negative pressure chamber 85 . The casing 82 is provided with an air inlet, which is located above the stove 10 .

[0110] In this embodiment, the housing 82 is directly connected to the negative pressure chamber. The negative pressure region generated by the negative pressure mechanism 5 acts directly on the air inlet of the housing 82. The relatively small air inlet of the housing 82 increases the negative pressure of the negative pressure mechanism 5, thereby accelerating the extraction rate of the oil-fume mixture. Furthermore, the air inlet is located above the stove 10. As the oil-fume mixture generated on the stove 10 is heated and moves upward, it is directly drawn into the housing 82 by the negative pressure generated by the negative pressure mechanism 5 and then into the negative pressure chamber. Positioning the air inlet above the stove 10 facilitates the extraction of the oil-fume mixture.

[0111] Preferably, the integrated stove further comprises: a blocking member 83, which is arranged at a position of the casing 82 corresponding to the air inlet and is located above the stove, forming a space for the movement of oil smoke with the stove.

[0112] In this embodiment, the blocking member 83 is arranged parallel to the stove 10 to prevent the oil fume mixture from moving directly upward due to heat. The negative pressure mechanism 5 does not have time to absorb the oil fume mixture and diffuses it, further improving the purification effect of the filter element structure 1.

[0113] Preferably, the housing 82 is protruding from the upper surface of the stove 10 and is arranged perpendicular to the stove 10.

[0114] In this embodiment, the housing 82 is perpendicular to the stove 10 to facilitate adsorption of the oil smoke mixture.

[0115] The integrated stove also includes: a shell 81, a negative pressure mechanism 5 is arranged inside the shell 81, the air outlet of the negative pressure mechanism 5 is connected to the outside of the shell 81, and an air outlet duct 84 is arranged inside the shell 81, and the air outlet duct 84 is connected to the air outlet of the negative pressure mechanism 5.

[0116] In this embodiment, the negative pressure mechanism 5 is connected to the bottom of the housing 81 , and the negative pressure mechanism 5 discharges the oil smoke mixture out of the housing 81 through the air outlet duct 84 to prevent the oil smoke from accumulating inside the housing 81 .

[0117] A negative pressure chamber 85 is provided in the housing 81 , the negative pressure mechanism 5 is provided in the negative pressure chamber 85 , and the negative pressure chamber 85 is communicated with the casing 82 .

[0118] Preferably, the integrated stove further comprises: a filter assembly 6, and the filter assembly 6 is covered at the air inlet.

[0119] In this embodiment, the filter assembly 6 is configured as a filter screen with a removable corresponding cover located at the air inlet. This filter screen first filters out most of the large oil smoke particles. This configuration can increase the ionization adsorption rate of the filter element structure 1. On the other hand, large oil smoke particles are prevented from entering the filter element structure 1, reducing the operating voltage and operating time of the filter element structure 1, thereby extending the service life of the filter element structure 1.

[0120] Example 3

[0121] The integrated stove of Example 3 of the present invention is a further improvement on the basis of the integrated stove disclosed in Example 2 or Example 1. The difference is that Example 2 of the present invention mainly changes the position of the filter element structure 1 from downstream of the negative pressure mechanism 5 to upstream of the negative pressure mechanism 5.

[0122] See Figure 3a The integrated stove includes: a stove 10; a filter element structure 1, which is arranged on one side of the stove 10 and is used to generate an electric field to ionize and adsorb the oil smoke generated from the stove 10. The filter element structure 1 includes an air inlet and an air outlet, and the air inlet is arranged at a position corresponding to the top of the stove 10; a negative pressure mechanism 5, which is arranged on one side of the air outlet of the filter element structure 1 and is used to generate negative pressure so that the oil smoke is adsorbed and purified by the filter element structure 1 and then discharged through the negative pressure mechanism 5.

[0123] In this embodiment, a gas stove or electric stove is installed on the stovetop 10; typically, two or more gas stoves are installed. In this embodiment, when a user cooks on the stovetop 10, cooking, or otherwise generating oil fumes, the filter structure 1 corresponds to the air outlet of the negative pressure mechanism 5. The air outlet of the negative pressure mechanism 5 blows the oil fumes toward the filter structure 1, where it generates an electric field that ionizes and adsorbs the oil-fume mixture. The negative pressure mechanism 5 generates negative pressure, and the filter structure 1 adsorbs the oil-fume mixture. This ensures that the oil-fume mixture generated on the stovetop 10 is immediately drawn into the filter structure 1 by the negative pressure mechanism 5, thereby reducing the amount of oil-fume mixture released outdoors and the potential for air pollution. This embodiment emphasizes that the negative pressure mechanism 5 is installed in correspondence with the air outlet of the filter structure 1. After the oil-fume mixture enters the filter structure 1, it is ionized, adsorbed, and purified, and then the clean airflow enters the negative pressure mechanism 5. This prevents the airflow from entering the negative pressure mechanism 5, which could cause oil accumulation within the negative pressure mechanism 5. This reduces the wind force of the negative pressure mechanism 5 and reduces the need for cleaning the negative pressure mechanism 5.

[0124] Preferably, the filter element structure 1 is arranged above the stove 10 , and the negative pressure mechanism 5 is arranged below the stove 10 .

[0125] In this embodiment, since the oil-fume mixture moves upward when heated, the filter element mechanism is positioned above, allowing the filter element structure 1 to directly remove the oil-fume mixture above the stovetop 10. The negative pressure mechanism 5 is positioned below the stovetop 10, allowing the airflow to move upward and then downward, increasing the airflow trajectory and, in turn, the likelihood of the oil-fume mixture being ionized and adsorbed, further enhancing the purification effect.

[0126] In addition, the integrated stove of this embodiment is an integrated stove with layered adsorption purification, which is improved on the basis of Example 1. The integrated stove with layered adsorption purification includes: a stove 10; a filter element structure 1, which is arranged corresponding to the stove 10, and the filter element structure 1 includes a number of filter element layer structures 100 that are independently controlled from each other, each of the filter element layer structures 100 is used to generate an electric field for adsorbing the oil fume mixture after being energized, and each of the filter element layer structures 100 is arranged at intervals along the moving direction of the oil fume mixture; a negative pressure mechanism 5 is used to generate negative pressure so that the oil fume mixture passes through each of the filter element layer structures 100 in turn.

[0127] In this embodiment, each filter layer structure 100 is capable of generating an electric field that ionizes and adsorbs the oil-fume mixture. Since multiple filter layers 100 are provided, each filter structure 1 is spaced apart along the direction of the oil-fume mixture's airflow. Therefore, as the oil-fume mixture sequentially enters each filter layer structure 100, the filter layers 100 closer to the air inlet of the filter structure 1 absorb more oil-fume, making breakdown more likely. Each filter layer structure 100 is independently controlled. Therefore, when breakdown occurs at a preset frequency, the voltage is reduced until the voltage drops below a preset value. Alternatively, the operating power falls below a preset value, indicating failure of the corresponding filter layer structure. Only when all filter layers 100 experience frequent breakdowns does the entire filter structure 1 fail. This fully utilizes each filter layer structure 100, extending the service life of the entire filter structure 1 and resolving the technical issue of underutilization and resource waste in existing filter layers 100.

[0128] Furthermore, the filter element structure 1 includes: an ionization zone and an adsorption zone, and the oil smoke mixture first passes through the ionization zone and then enters the adsorption zone.

[0129] In this embodiment, the ionization zone and the adsorption zone can be arranged in a way that one layer of ionization zone and one layer of adsorption zone are arranged, or in a way that all ionization zones are arranged first and then all adsorption zones are arranged. Figure 3a Only two layers of ionization zones are shown in FIG. 1 , but in other embodiments, multiple layers of ionization zones may be used, and the filter element structure may be as follows: Figure 8b , Figure 7c As shown in (refer to other embodiments) etc., the arrangement of multi-layer ionization zones or one layer of ionization and one layer of adsorption is not limited here.

[0130] Each of the filter core layer structures 100 in the ionization zone and each of the filter core layer structures 100 in the adsorption zone is controlled by an independent working voltage or working power, so as to facilitate the independent control of each filter core layer structure.

[0131] A first sensor and a second sensor for detecting the concentration of the oil-fume mixture are respectively provided upstream and downstream of the filter element structure 1 .

[0132] In addition, the above-mentioned integrated stoves usually have one of the following functions:

[0133] There is a disinfection cabinet under the stove, which is used to disinfect kitchen utensils such as bowls, chopsticks, and pot washing utensils.

[0134] A steamer is provided under the stove to heat food and the like by steam.

[0135] An oven is installed under or on the side of the stove to bake food.

[0136] In order to reduce the risk of users sweating profusely in the kitchen and improve user experience, an air conditioner may be provided on the integrated stove to blow out cold air to cool the kitchen.

[0137] Furthermore, to make cooking less boring for users, to make it easier for users to operate the integrated stove, or to facilitate users to learn cooking skills while cooking, a display screen is provided above the integrated stove for playing videos or displaying various information. Preferably, it is a touch screen, so that users can not only watch videos but also operate the integrated stove through the touch screen.

[0138] In addition, a speaker can be provided on the integrated stove for playing voice or music.

[0139] Furthermore, an Internet communication interface or a wireless communication module is installed on the integrated stove, so that the user can answer external calls while cooking in the kitchen without affecting the cooking.

[0140] In addition, the integrated stove can also integrate a dishwasher under the stove to make it easier for users to wash dishes.

[0141] Implementation Method 2

[0142] Example 4

[0143] The second embodiment of the present invention provides a range fumes extraction device, such as Figure 4aAs shown, the range fumes extraction device comprises: a casing 4 including an air inlet; a filter element structure 1 for generating an electric field to ionize and adsorb the fume; a negative pressure mechanism 5 arranged on one side of the filter element structure 1 for generating negative pressure so that the fume is purified by the filter element structure 1 and then discharged to the outside of the casing 4.

[0144] In this embodiment, the filter element structure 1 and the negative pressure mechanism 5 are both disposed within the housing 4, which comprises a first portion in the shape of a rectangular parallelepiped and a second portion in the shape of a triangular prism. In this embodiment, the negative pressure mechanism 5 generates negative pressure, creating a negative pressure region within the housing 4. This negative pressure region causes the oil fume mixture to enter the housing 4 through the air inlet, where it then passes through the filter element structure 1. As the oil fume mixture passes through the filter element structure 1, an electric field is generated on the filter element structure 1 that ionizes and adsorbs the oil fume mixture, absorbing large particles of gaseous, solid, and liquid oil fume. The purified air is then discharged from the housing 4. The present invention purifies the oil fume mixture after it enters the housing 4, reducing the amount of oil fume mixture discharged outdoors and minimizing the potential for air pollution. Therefore, this embodiment solves the technical problem of existing kitchen appliances, such as range hoods, which are prone to air pollution. It is environmentally friendly and provides a smoke-free environment.

[0145] Furthermore, a filter assembly 6 is provided at the corresponding air inlet, and the filter 6 preliminarily performs coarse filtering on large particles of oil smoke.

[0146] Implementation Method 3

[0147] On the basis of the above-mentioned embodiment 1 and embodiment 2, embodiment 3 of the present invention mainly describes a detachable filter element structure applied to purification equipment such as a range hood device and an integrated stove.

[0148] Example 5

[0149] The present invention provides a filter element device that is easy to disassemble and is installed on a substrate, such as Figure 5a as well as Figure 5b As shown, the filter element device includes: a filter element structure 1 and a connecting structure 7. The filter element structure 1 can generate an electric field to absorb harmful oil fume mixtures. One end of the connecting structure 7 is connected to the filter element structure 1, and the other end of the connecting structure 7 is detachably connected to a substrate. In the case where the range hood used by the user does not include the filter element structure 1 and needs to absorb and filter the harmful oil fume mixture, the detachable connecting structure 7 can more conveniently integrate the filter element device into the range hood and facilitate replacement. At the same time, the connecting structure 7 of the filter element device is retractable and can be installed on different substrates to adapt to different application scenarios, such as walls or range hoods of different widths. In addition, the detachable connecting structure 7 facilitates cleaning, maintenance, or replacement of the filter element device.

[0150] In this embodiment, the filter element structure 1 is provided with a connecting structure 7. This connecting structure 7 can be modularized and sold separately, and can be installed on one side of the negative pressure mechanism. Furthermore, when the filter element structure 1 is integrated into a range hood or integrated stove for sale, the provision of the connecting structure 7 facilitates the processing and production of the filter element structure 1 and facilitates its installation on the range hood or integrated stove body. Furthermore, the provision of the connecting structure 7 facilitates the removal of the filter element structure 1 for cleaning or replacement.

[0151] To facilitate understanding of the structure of the filter element device, the filter element structure 1 and the connection structure 7 are further described as follows:

[0152] As shown in Figure 5 and Figure 5b As shown, the connecting structure 7 includes a clamping portion 73, which is clamped on the base object. Specifically, a matching portion is provided on the base object, and the clamping portion 73 is clamped with the matching portion, so that the connecting structure 7 can be firmly clamped on the base object to install the filter element device.

[0153] Preferably, the clamping portion 73 is configured as a through hole 74 that passes through the connecting structure 7 .

[0154] In this embodiment, the filter element device further includes a locking member; the connecting structure 7 is provided with a through hole 74, and the connecting structure 7 is locked to the base object by the locking member.

[0155] In this embodiment, the through-hole 74 is configured as a screw hole, etc., so that the filter element structure 1 can be easily installed at any position of the substrate by screwing.

[0156] Preferably, the relative positions of the connecting structure 7 and the filter element structure 1 are adjustable.

[0157] In this embodiment, the relative position of the connecting structure 7 and the filter element structure 1 is adjustable. Specifically, the connecting structure 7 can be extended or shortened relative to the filter element structure 1, thereby making the entire filter element structure 1 adaptable to substrates of different lengths.

[0158] Preferably, the connection structure 7 includes: a first sheet metal component 71 and a second sheet metal component 72 , the first sheet metal component 71 is connected to the filter element structure 1 , and the second sheet metal component 72 is connected to the substrate.

[0159] In this embodiment, the first sheet metal member 71 and the second sheet metal member 72 are provided, which enhances the structural strength. Furthermore, the first sheet metal member 71 and the second sheet metal member 72 are perpendicular to each other. The perpendicularity of the first sheet metal member 71 and the second sheet metal member 72 enhances the structural strength of the connector structure.

[0160] Preferably, the filter element structure 1 is insulated from the connection structure 7 .

[0161] In this embodiment, the filter element structure 1 is insulated from the connection structure 7 to prevent the filter element structure 1 from being connected to the connection structure 7 and causing conduction with the substrate, thereby harming the human body.

[0162] Preferably, the connecting structure 7 and the filter element structure 1 are integrated.

[0163] In this embodiment, the connection structure 7 is fixedly arranged on one side of the filter element structure 1. There is no need to install the connection structure 7 additionally during the later installation, which is simple to operate and easy to install.

[0164] Example 6

[0165] See Figure 6a 、 Figure 6b as well as Figure 6c This embodiment provides a modular purification filter device that can be installed and used independently and can be installed in a range hood or an integrated stove. Figure 6a As shown, the filter element device includes: a filter element structure 1, which is used to generate an electric field to adsorb the oil smoke mixture; a power module 3, which is used to provide high-voltage power to the filter element structure 1, and the power module 3 is detachably connected to the filter element structure 1.

[0166] In this embodiment, the filter element structure 1 generates an electric field to adsorb oil smoke. Since the power module 3 is detachably connected to the filter element structure 1, the purification filter element device can be used alone. When a purification device such as a range hood or integrated stove that lacks the filter element structure 1 is already installed in the home, only a modular purification filter element device needs to be configured. Since the filter element structure 1 is configured with a corresponding power module 3, and the power module 3 is used to control the output voltage of the filter element structure 1, there is no need to additionally disassemble the interior of the range hood for wiring control with the range hood. It only needs to place the purification filter element device at the corresponding range hood, which can be quickly installed to achieve ionization and adsorption of oil smoke generated in the kitchen. This solves the technical problem of existing kitchen appliances such as range hoods that are prone to polluting the atmosphere, and has the technical advantages of electrostatically adsorbing oil smoke, providing a smoke-free environment, and being green and environmentally friendly.

[0167] Preferably, the power module 3 includes: a current detection component, which is used to detect the working current of the filter element structure 1.

[0168] In this embodiment, the current detection element is electrically connected to the filter element structure 1, and by detecting the working current of the filter element structure 1, it is confirmed whether the filter element structure 1 is working normally; if a short circuit occurs in the filter element structure 1, that is, a breakdown occurs between the positive and negative plates, the circuit is short-circuited, and the current increases instantaneously, it means that the filter element structure 1 has a breakdown, which indicates that there is a problem with the filter element structure 1.

[0169] It is worth noting that in this embodiment, a current detection circuit is integrated into the power module 3, and the current detection circuit is used as a current detection element to realize current detection of the filter element structure. In other embodiments, a separate hardware such as a current detector can be provided as a current detection element to detect the current of the filter element structure.

[0170] Preferably, the power module 3 further includes a display component, which is electrically connected to the current detection component and is used to display at least one of the operating current, voltage and time of the filter element structure 1.

[0171] In this embodiment, the display component is configured as a display screen, which displays the working time of the entire filter element structure 1, or the working time of any state of the entire filter element structure 1, to remind the user of the working state of the filter element structure 1; displays the working current to remind the user whether the filter element structure 1 has a breakdown, and indirectly reminds the user whether there is too much oil accumulated in the filter element structure 1; displays the working voltage to prompt the current working voltage of the filter element structure 1, so that the operator can control the voltage output according to the current change or the working time of the entire filter element structure 1, and then control the working voltage of the filter element structure 1 so that the filter element structure 1 can work normally.

[0172] In other embodiments, in order to understand the working status, an MCU can be implanted to control the power module 3 to output a voltage signal and / or a current signal to the filter element structure 1 to control the working status of the filter element structure 1.

[0173] Preferably, the power module 3 further includes a power regulating circuit, one end of which is connected to the current detection element, and the other end of which is connected to the filter element structure 1, for controlling the power output from the power module 3 to the filter element structure 1.

[0174] In this embodiment, the power regulating circuit outputs power to regulate the working voltage of the filter element structure 1 so that the filter element structure 1 can work normally to ionize and absorb oil smoke.

[0175] Preferably, the power module 3 further includes an alarm module, which is electrically connected to the current detection element. The alarm module is used to alarm when the current detection element detects that the current and / or voltage are abnormal.

[0176] In other embodiments, electrical signals may be sent by implanting an MCU, which may serve as a feedback signal.

[0177] In this embodiment, the power module 3 also includes a fault detection and alarm module, which can be connected to the fault detection module or to the current detection module to generate an alarm when the detected current or voltage is abnormal. The alarm module can be a status indicator light that is always on, flashing, or a buzzer alarm.

[0178] Preferably, the power module 3 further includes: a prompting member, which is used to display the working status of the filter element.

[0179] In this embodiment, the prompting elements include: purification status, cleaning status and abnormal status. The status of the filter element structure 1 is displayed in the power module 3, so as to show the working status of the filter element to the user.

[0180] Preferably, the power module 3 includes an MCU, which is used to output an output current signal and / or a voltage signal. The current signal and the voltage signal are used to feed back the working status of the filter element structure.

[0181] In this embodiment, the MCU is integrated into the power module and outputs a voltage signal by outputting an electrical signal or the like, thereby being able to quickly provide feedback on the working status of the filter element.

[0182] Preferably, combined Figure 6b As shown, the filter element structure 1 includes a plurality of first electrode plates 11 and a plurality of second electrode plates 12 , and the first electrode plates 11 and the second electrode plates 12 are alternately arranged in sequence.

[0183] In this embodiment, the first electrode plate 11 and the second electrode plate 12 generate an electric field for adsorbing oil smoke after being energized. The distance between the first electrode plate 11 and the second electrode plate 12 needs to be sufficient to generate a stable electric field, thereby achieving ionization and adsorption of oil smoke.

[0184] Preferably, combined with Figure 6c As shown, the filter element structure 1 also includes: a first connecting member 13 and a second connecting member 14; the power module 3 includes a first voltage output end and a second voltage output end; the first connecting member 13 connects the first voltage output end with the first electrode 11, and the second connecting member 14 connects the second voltage output end with the second electrode 12.

[0185] In this embodiment, the first connecting member 13 is conductive, and the second connecting member 14 is also conductive. The output end of the power module 3 is directly connected to the first connecting member 13 and the second connecting member 14, so that the first electrode plate 11 and the second electrode plate 12 are energized to form an electric field. The structure is simple and the operation is easy.

[0186] Combine Figure 6b as well as Figure 6c The filter element structure also includes a frame 2, a first electrode plate 11 and a second electrode plate 12 are arranged in the frame 2, and the frame 2 includes: two oppositely set first fixing members 21, the first fixing member 21 is connected to the first connecting member 13; two oppositely set second fixing members 22, the second fixing member 22 is connected to the second connecting member 14, wherein the first fixing member 21 is insulated from the second fixing member 22.

[0187] In this embodiment, the first fixing member 21 and the second fixing member 22 are located on the same side of the frame 2 . The first fixing member 21 and the second fixing member 22 are used to fix the first connecting member 13 and the second connecting member 14 to fix the first electrode plate 11 and the second electrode plate 12 .

[0188] Preferably, the power module 3 and the filter element structure 1 are integrated.

[0189] In this embodiment, the filter element structure 1 further includes an outer frame 184, the first electrode plate 11 and the second electrode plate 12 are disposed inside the outer frame, and the power module 3 is disposed outside the filter element structure 1 and detachably connected to the outer frame 184. The power module 3 is disposed outside the filter element structure 1 and integrated with the filter element structure 1, so that the entire filter element device forms a whole during transportation, thereby facilitating transportation. The power module 3 is detachably connected to the filter element device. When installation is required, the filter element structure 1 is installed at the location corresponding to the generation of oil smoke, and the power module 3 is installed separately, so as to facilitate installation of the entire purification filter element device.

[0190] Example 7

[0191] The following describes the detailed structure of the filter element structure in the embodiment of the present invention. The filter element structure of this embodiment 7 is as follows: Figure 7a 、 Figure 7b 、 Figure 7c 、 Figure 7d 、 Figure 7e 、 Figure 7f As shown, generally speaking, the filter element structure includes an ionization zone that can ionize and adsorb the oil fume mixture and an adsorption zone that adsorbs the oil fume. The ionization zone of the filter element structure includes: a frame 2; a plurality of first pole plates 11 arranged in parallel and spaced apart within the frame 2 and a second pole plate 12 arranged in parallel and spaced apart with the first pole plate 11, the second pole plate 12 includes a conductive body and a plurality of tooth-shaped protrusions provided on the conductive body, and each protrusion forms an electric field with the adjacent first pole plate 11 after being energized.

[0192] In this embodiment, the first electrode plate 11 is connected to the positive pole of the power supply, and the second electrode plate 12 is also connected to the positive pole of the power supply. The tooth-shaped protrusions on the second electrode plate 12 and the first electrode plate 11 form a point-plane electric field, which ionizes the air at the protrusions, causing the oil fume mixture to carry charged particles. In this embodiment, the electrode plates are in a planar shape, and the corona voltage of this combination is relatively low. Moreover, the first electrode plate 11 at the positive pole is positively charged and can adsorb negatively charged substances to a large extent, and thus can preferably adsorb the oil fume mixture. Since it can ionize the air including the oil fume mixture, it has a good adsorption effect. In this embodiment, the protrusions of each conductive body in the second electrode plate 12 and the plane where the first electrode plate 11 is located form an electric field, and it is a non-uniform point-plane electric field. Therefore, the distance between the protrusions and the first electrode plate 11 is the shortest, and the tip of the protrusion discharges to ionize the air containing the oil fume mixture, making the oil fume mixture charged and adsorbed on the first electrode plate 11 and the second electrode plate 12 respectively, realizing the functions of ionizing and adsorbing the oil fume mixture, thereby purifying the oil fume mixture in the kitchen and further reducing the oil fume mixture discharged outdoors. The present invention solves the technical problem that the electrical appliances in the kitchen in the prior art pollute the atmosphere, and has the technical advantages of providing a smokeless environment, reducing air pollution, and being green and environmentally friendly.

[0193] In this embodiment, tooth-shaped protrusions are provided. The tooth-shaped protrusions and the first electrode plate 11 form an electric field, and the air is ionized by discharging on the tooth-shaped protrusions, so that the oil fume mixture is adsorbed on the conductive bodies of the first electrode plate 11 and the second electrode plate 12. <000,0473>

[0194] Preferably, the protruding direction of the protrusion is parallel to the first electrode plate 11.

[0195] In this embodiment, as Figure 7c shown, a plurality of conductive bodies are provided. The plurality of conductive bodies are arranged along the width direction of the first electrode plate 11 to form a second electrode plate 12 in a mountain shape. The tooth-shaped protrusions are provided on both sides of the length direction of the conductive body, and they protrude along the plane where the first electrode plate 11 is located, so that there are discharge protrusions on both sides corresponding to one conductive body. Furthermore, the discharge ionization parts are increased, and thus the ionization efficiency is increased. Therefore, the rate of ionizing the oil fume is accelerated. Further, the content of the oil fume discharged into the air is reduced, which has the advantage of being green and environmentally friendly.

[0196] In other embodiments, as Figure 7b shown, the conductive bodies are arranged at intervals along the length direction of the first electrode plate 11 to form a second electrode plate 12 in a king shape.

[0197] Preferably, the outer contour area of the second electrode plate 12 is adapted to the outer contour area of the first electrode plate 11, so that the electric field generated between the second electrode plate 12 and the first electrode plate 11 covers the space formed by the second electrode plate 12 and the first electrode plate 11.

[0198] In this embodiment, the area of the second electrode plate 12 corresponds to that of the first electrode plate 11. Generally speaking, the contour area formed by the second electrode plate 12 is smaller than the contour area of the first electrode plate 11. This is because when the second electrode plate 12 forms an electric field, the protrusions diverge the electric field lines toward both sides, and thus the contour area between the second electrode plate 12 and the first electrode plate 11 needs to make the electric field fill the entire space so as to achieve effective ionization while meeting the requirements of the oil fume adsorption effect, and avoid the absence of an electric field in part of the space formed between the first electrode plate 11 and the second electrode plate 12, resulting in the airflow not being ionized and directly flowing out of the space, weakening the ionization effect, and causing the effect of ionization and adsorption of oil fume to be weakened.

[0199] Preferably, each second electrode plate 12 includes a plurality of conductive bodies, and the protrusions on two adjacent conductive bodies are spaced apart by a preset distance, and the preset distance is required to ensure that the electric fields generated between the corresponding protrusions do not interfere with each other.

[0200] In this embodiment, the distance between the conductive bodies is positively correlated with the voltage between the conductive bodies. The electric field generated between the protrusions on the conductive bodies just covers the first electrode 11, and the electric fields generated between two adjacent protrusions do not interfere with each other, thereby weakening the electric field strength and resulting in insufficient ionization of the oil smoke.

[0201] Preferably, Figure 7b As shown, the filter element structure also includes: a first connecting member 13 and a second connecting member 14, the first connecting member 13 is connected to the first electrode plate 11, and the second connecting member 14 is connected to the second electrode plate 12, and the first connecting member 13 and the second connecting member 14 are relatively arranged on the frame 2.

[0202] The frame 2 is arranged in a quadrilateral frame shape, and the first connector 13 and the second connector 14 are both made of conductive materials. Specifically, the first connector 13 and the second connector 14 have the same structure. The first connector 13 includes: a first series connector and a first sleeve; the first series connector connects the first electrode plates 11 in series, the first sleeve is sleeved on the first series connector, and the two ends of the first sleeve are respectively pressed against the two adjacent first electrode plates 11, and the first series connector is conductive. The two ends of the first series connector are passed through the frame 2 and fixed to the first electrode plates 11 by the locking nuts at both ends of the series connector. The first connector 13 is connected to the upper end of the frame 2, and the second connector 14 is connected to the middle part of the frame 2; the second connector 14 is connected to the second electrode plate 12. In order to make the entire structure more stable and balanced, two first connectors 13 and two second connectors 14 are provided. The two first connectors 13 connect the two ends of the first electrode plate 11, and the two second connectors 14 connect the two ends of the second electrode plate 12 respectively. The structural working principle of the second connecting member 14 is consistent with that of the first connecting member 13 , and will not be described in detail here.

[0203] Preferably, the first connector 13 is electrically connected to the first electrode plate 11 , and the second connector 14 is electrically connected to the second electrode plate 12 .

[0204] In this embodiment, all first electrode plates 11 are connected in series via a first connector 13, and all second electrode plates 12 are connected in series via a second connector 14. This allows all first connectors 13 and second connectors 14 to be simultaneously conductive, resulting in a simple structure. Of course, in other embodiments, the first connector 13 may also be an insulator, allowing each first electrode plate 11 and second electrode plate 12 to be electrically connected individually.

[0205] Preferably, the frame 2 includes: two oppositely arranged first fixing members 21, the first fixing member 21 is connected to the first connecting member 13; two oppositely arranged second fixing members 22, the second fixing member 22 is connected to the second connecting member 14, wherein the first fixing member 21 is insulated from the second fixing member 22.

[0206] In this embodiment, the first fixing member 21 and the second fixing member 22 are located on the same side of the frame 2 . The first fixing member 21 and the second fixing member 22 are used to fix the first connecting member 13 and the second connecting member 14 to fix the first electrode plate 11 and the second electrode plate 12 .

[0207] Preferably, the filter element structure includes at least two groups of first electrode plates 11 and two groups of second electrode plates 12 ; the two groups of first electrode plates 11 are arranged at intervals along the airflow direction, and the two groups of second electrode plates 12 are provided corresponding to the two groups of first electrode plates 11 .

[0208] In this embodiment, each set of first electrode plates 11 and each set of second electrode plates 12 form an ionization adsorption structure, and the two ionization adsorption structures are arranged side by side along the airflow direction. This provides a graded ionization of the oil fume mixture, further enhancing the ionization adsorption effect of the oil fume and reducing the amount of oil fume emitted into the air.

[0209] In this embodiment, the two adjacent groups of first pole plates 11 are cross-arranged, and the corresponding two connected groups of pole column 181 components 16 are also cross-arranged, so that the electric field directions formed in the corresponding spaces of the two groups of structures are opposite. In the first layer of the first pole plate 11, the oil smoke that is farther away from the first pole plate 11 may not be adsorbed in time. At this time, when it moves to the second layer of the first pole plate 11, it is relatively closer to the first pole plate 11, and can thus preferentially adsorb the oil smoke. In this way, the oil smoke that is not adsorbed on the first layer of the first pole plate 11 can be adsorbed by the second layer of the first pole plate 11; the working principle of setting two layers of the second pole plate 12 is similar to the working principle of setting two layers of the first pole plate 11, and will not be repeated here.

[0210] like Figure 7d as well as Figure 7eAs shown, the filter structure also includes an adsorption assembly, which serves as the adsorption zone of the filter structure and adsorbs the oil-fume mixture. The adsorption assembly is disposed at one end of the first electrode plate 11 along the airflow direction and is used to generate an electric field to adsorb the mixture discharged from between the first electrode plate 11 and the second electrode plate 12.

[0211] In this embodiment, the ionization adsorption structure and the adsorption component are arranged side by side at intervals. The oil smoke not adsorbed by the ionization adsorption structure moves to the adsorption component, and the adsorption component performs adsorption, further adsorbing the oil smoke mixture that was not adsorbed in the first layer.

[0212] Preferably, the adsorption assembly includes: a plurality of third electrode plates 151 and a plurality of fourth electrode plates 152 ; the third electrode plates 151 and the fourth electrode plates 152 are arranged in an alternating manner.

[0213] In this embodiment, the adsorption assembly further includes a third connector 153 and a fourth connector 154. The third connector 153 connects the third electrode plate 151 in series, and the fourth connector 154 connects the fourth electrode plate 152 in series, so that both ends of the third connector 153 are fixed to the frame 2. A uniform electric field is formed between the fourth electrode plate 152 and the third electrode plate 151 to adsorb the oil smoke mixture.

[0214] Furthermore, both the third electrode plate 151 and the fourth electrode plate 152 are provided with a bent portion. The bent portion of the fourth electrode plate 152 and the third electrode plate 151 is arranged at a certain angle along the airflow direction. On the one hand, the adsorption area of the fourth electrode plate 152 and the third electrode plate 151 is increased; on the other hand, the inclination forms a flow barrier with the airflow direction, buffering the airflow speed, thereby preventing excessive airflow speed from directly flowing out of the filter structure and resulting in incomplete adsorption.

[0215] like Figure 7f As shown, another embodiment of the adsorption assembly is shown. It is worth noting that the adsorption assembly can also be used as a separate adsorption filter structure. Specifically, the adsorption assembly includes a plurality of pole frames 182 and a plurality of poles 181. Each pole frame corresponds to each pole 181, and the pole frames are arranged around the outside of the poles.

[0216] In this embodiment, the pole 181 is cylindrical and is made of metal materials such as molybdenum wire, tungsten wire, etc., wherein the pole 181 is cylindrical; the airflow direction is parallel to the pole frame 182 and the axial direction of the pole 181, entering the interior of the pole frame 182 from one end and flowing out from the other end. The pole frame 182 is connected to the positive pole of the power supply, and the pole post 181 is connected to the negative pole of the power supply. The entire pole post 181 and the inner wall of the pole frame 182 form an electric field that can ionize the air. Because the pole post 181 and the pole frame 182 are arranged along the axis, the distance between the pole post 181 and the pole frame 182 is equal. The electric field lines generated by the pole post 181 can evenly cover the interior of the pole frame 182, forming an electric field with the pole frame 182, adsorbing the oil fume mixture, so that the oil fume mixture is adsorbed on the side wall of the pole frame 182. This achieves the adsorption of the oil fume mixture, solving the technical problem of the prior art that kitchen appliances are prone to causing air pollution, and has the advantages of reducing oil fume emissions and being environmentally friendly. The projection of the pole frame 182 along its own axis can be a circle or a regular polygon; it is preferably set to a regular hexagon for ease of processing.

[0217] It is worth noting that the projection of the pole frame 182 in the direction of its own axis can be a circle or a regular polygon.

[0218] Preferably, the poles 181 and the inner sides of the pole frames 182 are spaced apart by a preset distance, and the preset distance is required to ensure that the electric fields generated by adjacent poles 181 and corresponding pole frames 182 do not interfere with each other.

[0219] In this embodiment, the distance between the pole 181 and the pole frame 182 is moderate, as the spacing between the pole 181 and the pole frame 182 affects the voltage required for normal operation of the filter element. Setting a distance that is too long results in a correspondingly high required voltage, while a distance that is too close causes the electric fields generated by two adjacent poles 181 to interfere with each other, thereby weakening part of the electric field and reducing the effectiveness of ionizing and adsorbing the oil smoke mixture.

[0220] Preferably, the projection of the pole frame 182 on a plane perpendicular to its own axis is a regular polygon. Adjacent pole frames 182 have a common edge.

[0221] In this embodiment, the regular polygonal pole frame 182 is easier to manufacture than a circular pole frame 182, reducing the number of processing steps and lowering production costs. Furthermore, the pole frames 182 are regular polygonal when viewed from above, and each adjacent pole frame 182 shares a common edge, ensuring a tight fit between the pole frames 182 and forming an electric field capable of ionizing the air within each space. This prevents some spaces from generating an ionizing electric field and, consequently, preventing ionized adsorption and discharge.

[0222] Preferably, the projection of the pole frame 182 on a plane perpendicular to its own axis is a regular hexagon.

[0223] In this embodiment, the regular hexagonal pole frame 182 forms a honeycomb filter element, and the distances from the pole 181 to the regular hexagonal pole frame 182 are roughly equal, which further increases the volume of the effective electric field in the entire filter element structure 1 and improves space utilization.

[0224] Preferably, Figure 7g The filter element structure 1 further includes a fixed connection member 183 , which is fixedly connected to one end of the pole 181 .

[0225] In this embodiment, the fixed connector 183 is configured to be plugged into the base plate. One end of the pole 181 is plugged into the fixed connector 183, and one end of all poles 181 is connected to form an integrated arrangement, making it easy to directly insert the pole frame 182 onto the pole 181. Alternatively, all poles 181 on the fixed connector 183 are inserted into the pole frame 182, which has the advantage of facilitating assembly of the filter element structure 1.

[0226] Preferably, the fixed connector 183 is electrically connected to the pole 181 .

[0227] In this embodiment, the fixed connector 183 is made of metal. Specifically, the pole 181 is welded to the fixed connector 183 by electric welding, or connected to the fixed connector 183 by plugging. It is only necessary to connect the power supply to the fixed connector 183 to achieve the connection of all poles 181. The structure is simple and the setting is convenient.

[0228] Preferably, one end of the pole frame 182 is fixedly connected to the fixed connector 183 , and the pole frame 182 and the fixed connector 183 are insulated from each other.

[0229] In this embodiment, a plug-in portion is provided on the fixed connection member 183, and the plug-in portion is plugged into the pole frame 182, so that the pole 181 is fixedly connected to the pole frame 182, making the structure of the entire filter element structure 1 more stable.

[0230] Preferably, the filter element structure 1 further includes a shell 184 , which is sleeved on the outside of the pole frame 182 , and the shell 184 is insulated and connected to the pole frame 182 .

[0231] In this embodiment, the fixed connector 183 is a rectangular structure, the outer shell 184 is a rectangular frame, the outer fixed connector 183 is covered on one end of the outer shell 184, the outer wall of the fixed connector 183 is in contact with the inner wall of the outer shell 184, and the pole frame 182 is accommodated inside the outer shell 184, so that the entire filter element structure 1 is more neatly processed and stable.

[0232] Preferably, the housing 184 has insulating properties.

[0233] In this embodiment, the housing 184 is made of plastic or other insulating materials to prevent the housing 184 from being electrically connected to the pole frame 182 , which would pose a safety hazard and endanger human health.

[0234] like Figure 7h As shown, another embodiment of the adsorption assembly includes a first curved plate 155 and a second curved plate 156. The first curved plate 155 and the second curved plate 156 are arranged in a cross-spaced manner and are of the same shape and size. An electric field for adsorbing the oil fume mixture is formed between the first curved plate 155 and the second curved plate 156, which are arranged parallel to each other. The pole piece is configured as a curved surface, which increases the adsorption area between the first curved plate 155 and the second curved plate 156. On the other hand, the pole piece is inclined, forming a flow barrier between the first curved plate 155 and the second curved plate 156 and the direction of the airflow, buffering the airflow speed, thereby preventing excessive airflow from flowing directly out of the filter structure and resulting in incomplete adsorption.

[0235] Example 8

[0236] Based on the embodiment 7 of the present invention, the embodiment 8 of the present invention further improves the filter element structure and provides a purification filter element device with zoned voltage control. The purification filter element device includes: a filter element structure, the filter element structure includes a plurality of ionization layers and / or adsorption layers, and each layer structure is independently controlled. Specifically, this embodiment provides a filter element structure with zoned voltage control, such as Figure 8a as well as Figure 8b As shown, the filter element structure 1 includes several filter element layer structures 100 that work independently of each other. When each filter element layer structure 100 is energized, an electric field is generated to adsorb the oil fume mixture. Each filter element layer structure 100 includes a first pole plate 11 and a second pole plate 12, and the first pole plate 11 is grounded; the power supply module 3 includes several voltage output terminals corresponding to the filter element layer structures 100, which are used to provide working voltage for each filter element layer structure 100, and each voltage output terminal is respectively connected to the second pole plate 12 of each filter element layer structure 100; the filter element structure with partitioned voltage control includes: a frame 2, and several filter element layer structures 100, which are arranged in the frame 2.

[0237] In this embodiment, each filter layer structure 100 is capable of generating an electric field that ionizes and adsorbs the oil fume mixture. Since a plurality of filter layer structures 100 are provided, each filter structure 1 is spaced apart along the direction of the oil fume mixture airflow. Therefore, as the oil fume mixture sequentially enters each filter layer structure 100, the filter layer structure 100 closer to the air inlet of the filter structure 1 absorbs more oil fume, making breakdown more likely to occur there. Each filter layer structure 100 is controlled individually. When a preset frequency value breakdown occurs in each filter layer structure 100, a voltage reduction operation is performed until the voltage drops below a preset value, or the operating power reaches a preset value, indicating that the corresponding filter layer structure has failed. Only after a predetermined number (e.g., half) of the filter layer structures 100 have failed does the entire filter structure 1 fail. This fully utilizes each filter layer structure 100, extending the service life of the entire filter structure 1, and effectively resolving the technical problem of the existing filter layer structure 1 being underutilized and resulting in waste of resources.

[0238] Preferably, each voltage output terminal independently outputs voltage to each filter element layer structure 100 .

[0239] In this embodiment, each filter layer structure is controlled individually.

[0240] Preferably, the second electrode plate 12 of the filter element layer structure 100 is in a tooth shape, a line shape, a needle tip shape, a curved surface shape or a honeycomb shape.

[0241] In this embodiment, only the tooth shape is shown in the figure. For other shapes, please refer to other embodiments.

[0242] In a preferred embodiment of the present invention, in order to ensure the ionization and adsorption effects in the electric field, so as to improve the purification efficiency (including purification rate) of the oil fume mixture and achieve almost pollution-free or even zero-pollution emissions. For purification equipment of different types and specifications, because the filter element structure is not static, in order to match the purification equipment well and to ensure that the filter element structure can play the required ionization and adsorption effect on the oil fume mixture, it is necessary to design the range of the working voltage and / or working power of the filter element structure. The embodiment of the present invention fully considers the compatibility of the filter element structure with different purification equipment, and conducts in-depth research on the range of the working voltage and / or working power of the filter element structure, and proposes the following improved determination method:

[0243] This embodiment uses the tooth-shaped second electrode plate 12 of the filter element layer structure 100 as an example to illustrate the method for determining the range of operating voltage and / or operating power. Similar methods are used for other shapes. The concept of the present invention is to first determine the range of operating voltage, then determine the range of operating current, and finally determine the range of operating power. The specific description is as follows:

[0244] 1) Determine the operating voltage range, which is the voltage value at the initial corona discharge, that is, between the critical voltage value and the breakdown voltage value. It mainly includes the following steps:

[0245] The curvature radius r of the teeth (in the shape of thorns) on the second electrode plate for corona discharge is set A , the distance c between the second electrode plate and the adjacent first electrode plate;

[0246] Obtaining the temperature of the oil-fume mixture in the filter element structure; here, the temperature is obtained by setting a temperature sensor in the filter element structure;

[0247] The operating pressure P of the oil-fume mixture entering the filter element structure is obtained; here, the operating pressure P is determined by detecting the pressure of the oil-fume mixture at the inlet and the outlet of the filter element structure.

[0248] The density factor ρ of the oil fume mixture is determined according to the temperature and operating pressure. Here, the density factor of the oil fume mixture can be obtained by the following formula:

[0249]

[0250] T0 - the ambient temperature of the filter element structure, usually room temperature 25 ° C;

[0251] T - operating temperature of the oil-fume mixture in the filter element structure;

[0252] P0——standard atmospheric pressure, usually one standard atmospheric pressure: 1×105Pa,

[0253] P——operating pressure.

[0254] The critical electric field intensity E0 on the second electrode during corona discharge is determined according to the density factor of the oil smoke mixture and the curvature radius; E0 here can be obtained by the following formula:

[0255]

[0256] Where: r A The curvature radius of the discharge point (tooth tip);

[0257] ρ oil smoke mixture density factor;

[0258] The critical voltage u0 (voltage value at the time of initial corona discharge) between the first electrode plate and the second electrode plate is determined according to the critical electric field strength and the curvature radius. The critical voltage u0 here is obtained by the following formula:

[0259]

[0260] d is a parameter related to the distance between the first electrode plate and the second electrode plate.

[0261] After determining the lower limit of corona discharge, the breakdown voltage of corona discharge must be determined to ensure that the filter element structure is in optimal working condition. The breakdown voltage of corona discharge is well documented in many literatures. Through experimental verification, the present invention selects a better calculation method described in the literature to determine the breakdown voltage. The determination method is as follows:

[0262]

[0263] Where c is the distance between the first and second plates. In other words, the breakdown voltage can be calculated using the oil smoke mixture density factor and the distance c.

[0264] 2) Determine the operating current value corresponding to each operating voltage under corona discharge, that is, the range of the operating current; the specific determination method is as follows:

[0265] Obtaining the concentration of a main component in the oil fume mixture, determining the ion mobility of the main component in the oil fume mixture according to the temperature, and determining the ion mobility of the oil fume mixture according to the concentration and the ion mobility of the substance at the concentration;

[0266] Since the components in the oil fume mixture are relatively complex, after testing, the main components are alkanes and alcohol phenol ethers. Among them, the alkanes are mainly decanane, and the alcohol phenol ethers are mainly 2-methyl-1-pentanol. Therefore, for the convenience of calculation, decanane and 2-methyl-1-pentanol are selected in the present invention as the current values corresponding to each voltage between the critical voltage value and the breakdown voltage during corona discharge. In practice, this current value is used as the basis for the up and down floating correction of the current value.

[0267] The ion mobility of the oil fume mixture of the embodiment of the present invention is calculated by the concentration and ion mobility of each single gas. It is assumed that hydrocarbons account for C1 of the oil fume mixture concentration, and alcohols, phenols and ethers account for C2. The ion mobility of the single gas is obtained as follows:

[0268]

[0269] K0 - the ion mobility of a single gas in an electric field with an electric field strength of E = 1 V / cm at a temperature of 0 degrees Celsius and a pressure of standard atmospheric pressure;

[0270] T - operating temperature of the oil-fume mixture in the filter element structure;

[0271] S——constant;

[0272] P——operating pressure.

[0273] where p j ,p c These are the inlet and outlet pressures of the oil-fume mixture passing through the filter element. Appropriate values are given here based on actual working conditions.

[0274] Substituting the obtained values into the formula, the ion mobility K1 and K2 of decanane and 2-methyl-1-pentanol at the operating temperature and operating pressure can be obtained.

[0275] Since oil smoke is a mixture, its ion mobility is:

[0276] Substituting this into the formula, we can obtain the ion mobility of the oil smoke mixture.

[0277] Determine the operating current value i corresponding to each operating voltage u under corona discharge; this is obtained in the following way:

[0278]

[0279] Among them, u is the working voltage, which takes an appropriate value between the critical voltage and the breakdown voltage.

[0280] u0——critical voltage;

[0281] f0——conversion constant, f0=9×10 6 ;

[0282] K′ is the ion mobility of the oil smoke mixture at operating temperature T and operating pressure P.

[0283] 3) Determine the operating power range under corona discharge.

[0284] The range of operating power can be obtained by multiplying the critical voltage by the corona current at the critical voltage, and the product of the breakdown voltage by the current at the breakdown voltage.

[0285] Using the range of working voltage and / or working power of the filter element structure obtained in the previous design, Figures 8c-8f simulate the intensity of the electric field formed between the first plate and the second plate. Here, a method for implementing corona discharge of the filter element structure is selected, see Figure 8c and 8d , for the teeth of the second plate of the ionization zone when the power supply discharges, Figure 8c In the prior art, the discharge is not at the tip of the tooth of the second plate, but between the adjacent teeth of the first plate and the second plate, and there is interference between them, which affects the corona discharge effect. Figure 8d In the middle, the discharge occurs at the tip of the teeth of the second electrode plate. Each tooth of the second electrode plate forms a uniform corona discharge. The teeth do not affect each other, and the ionization effect is obvious.

[0286] See Figure 8e and 8f By comparison, it can be seen that the design of the two electrodes in the adsorption area used in this embodiment can obtain a relatively uniform electric field, which obviously generates a stronger adsorption force when the gas containing the oil fume mixture passes through, thereby adsorbing the oil fume mixture.

[0287] Preferably, the first electrode plates 11 in two adjacent filter element layer structures 100 are arranged crosswise.

[0288] In this embodiment, the two adjacent groups of first electrode plates 11 are cross-arranged, and the corresponding two connected groups of second electrode plates 12 are also cross-arranged, so that the electric field directions formed in the corresponding spaces of the two groups of structures are opposite. In the first layer of the first electrode plates 11, the oil smoke that is farther away from the first electrode plates 11 may not be adsorbed in time. At this time, when it moves to the second layer of the first electrode plates 11, it is relatively close to the first electrode plates 11, and can thus preferentially adsorb the oil smoke. In this way, the oil smoke that is not adsorbed on the first layer of the first electrode plates 11 can be adsorbed by the second layer of the first electrode plates 11; the working principle of setting two layers of the second electrode plates 11 is similar to the working principle of setting two layers of the first electrode plates 11, and will not be repeated here.

[0289] Preferably, the filter element structure 1 also includes a first connecting member 13 and a second connecting member 14, the first connecting member 13 is connected to the first electrode plate 11, and the two ends of the first connecting member 13 are respectively connected to the two opposite sides of the frame 2; the second connecting member 14 is connected to the second electrode plate 12, and is connected to the two opposite sides of the frame 2 at both ends of the second electrode plate 12.

[0290] In this embodiment, the first electrode plate 11 is configured as a plate-shaped structure, and the second electrode plate 12 is configured as a multi-tooth plate-shaped structure.

[0291] Preferably, the frame 2 includes a first fixing member 21 positioned opposite to the first fixing member 21, with both ends of the connector respectively connected to the first fixing member 21. The first fixing member 21 is provided with a space for the second connector 14 to pass through. The frame 2 also includes a second fixing member 22 positioned opposite to the first fixing member 21, with both ends of the second connector 14 respectively connected to the second fixing member 22.

[0292] In this embodiment, a quadrilateral frame 2 is provided, and a first connector 13 and a second connector 14 are both configured to be made of a conductive material. Specifically, the first connector 13 and the second connector 14 have the same structure. The first connector 13 includes a first connector and a first sleeve. The first connector connects the first electrode plates 11 in series. The first sleeve is mounted on the first connector, and the two ends of the first sleeve respectively abut against two adjacent first electrode plates 11. The first connector is conductive. The two ends of the first connector are inserted into the frame 2 and secured to the first electrode plates 11 by locking nuts at both ends of the connector. The first connector 13 is connected to the upper end of the frame 2, and the second connector 14 is connected to the middle portion of the frame 2. The second connector 14 is connected to the second electrode plate 12. To make the entire structure more stable and balanced, two first connectors 13 and two second connectors 14 are provided. The two first connectors 13 connect the two ends of the first electrode plate 11, and the two second connectors 14 respectively connect the two ends of the second electrode plate 12. The structural working principle of the second connecting member 14 is consistent with that of the first connecting member 13 , and will not be described in detail here.

[0293] Preferably, the frame 2 further comprises: a third fixing member 23 arranged opposite to the first fixing member 21. The third fixing member 23 is arranged to connect the first fixing member 21, making the structure of the entire filter element more uniform.

[0294] Preferably, the first electrode plate 11 and the second electrode plate 12 in each filter layer structure 100 are arranged perpendicular to the direction of the oil-fume mixture airflow. This is equivalent to lengthening the first electrode plate 11. Furthermore, the independently functioning filter layer structures 100 are independent of each other, allowing full utilization of all filter layer structures.

[0295] Preferably, each filter layer 100 has a different operating voltage. In this embodiment, due to the different accumulation of oil smoke at different locations, the breakdown frequency varies in the later stages, causing some filter elements to fail. Since the accumulation of oil smoke decreases towards the end, setting a different operating voltage for each layer can effectively reduce power consumption and save energy.

[0296] Preferably, the filter element structure includes an ionization zone and an adsorption zone, which are spaced apart. The ionization zone ionizes the air containing the oil fume mixture, causing the particles in the oil fume mixture to be charged. However, due to the differences in weight and charge-carrying capacity of the various particles in the ionization zone, most of the oil fume mixture particles in the ionization zone will be adsorbed by the plates on both sides of the ionization zone. However, some particles will still overflow the ionization zone and float downstream. In this case, the adsorption zone can effectively further adsorb the oil fume mixture particles that overflow from the ionization zone, thereby greatly reducing the emission of oil fume mixture particles and reducing environmental pollution.

[0297] In this embodiment, the filter element structure can be arranged alternately with a layer of ionization zones and a layer of adsorption zones, or all ionization zones and all adsorption zones. The ionization zones are provided to ionize and adsorb the oil-fume mixture, while the adsorption zones are provided to further adsorb the oil-fume mixture. Furthermore, the adsorption zones can be provided as plate-like adsorption components or as honeycomb-shaped adsorption components.

[0298] Example 9

[0299] Based on the embodiment 8 or embodiment 7 of the present invention, the filter element structure is further improved, specifically, the ionization area of the filter element structure is improved. More specifically, the improvement is made on the second electrode plate that is ionized with the first electrode plate 11. Figure 9a 、 Figure 9b as well as Figure 9c As shown, this embodiment provides an ionization purification filter structure for use in kitchen appliances. It is used to generate an uneven electric field to ionize air containing a mixture of oil and smoke, forming charged particles in the electric field. The oil and smoke are charged with particles of different charges, and the charged particles are adsorbed on the energized motor, thereby achieving ionization and adsorption of the oil and smoke mixture. Specifically, the filter structure includes: a frame 2; a plurality of first pole plates 11, the first pole plates 11 are located in the frame 2 and are arranged in parallel and spaced apart; a plurality of pole assemblies 16, the pole assemblies 16 are arranged alternately with the first pole plates 11; wherein the pole assemblies 16 include columnar structures 161 (see Figure 2), and each columnar structure 161 generates an electric field when energized with the adjacent first pole plates 11.

[0300] In this embodiment, the voltage connected to the filter element is preferably set to 8kV-11kV; the columnar structure 161 is made of a metal wire such as tungsten or molybdenum wire; the first electrode plate 11 is connected to the positive pole of the power supply, and the pole assembly 16 is connected to the negative pole of the power supply. Because the first electrode plate 11 is a plate-like structure and the pole assembly 16 is provided with the columnar structure 161, the entire filter element structure spatially forms a line-surface electric field, with a linear discharge at the negative pole and a planar electrode at the positive pole. This combination has a low corona inception voltage. Furthermore, the positively charged first electrode plate 11 at the positive pole is capable of highly adsorbing negatively charged substances, thereby effectively adsorbing oil smoke; thus, achieving ionization and effective adsorption. In this embodiment, the axis of the columnar structure 161 in each pole assembly 16 is parallel to the plane of the first electrode plate 11, forming a non-uniform electric field. Therefore, at the shortest distance between the columnar structure 161 and the first electrode plate 11, discharge ionizes the air containing the oil fume mixture, charging the oil fume mixture and adsorbing it onto the first electrode plate 11 and the pole assembly 16, respectively. This achieves the effects of ionizing and adsorbing the oil fume mixture, purifying kitchen fumes and reducing the amount of oil fume mixture discharged outdoors. This solves the technical problem of air pollution caused by kitchen appliances in the prior art, providing a quiet environment, reducing air pollution, and being environmentally friendly.

[0301] In other embodiments, the first electrode plate 11 is connected to the negative electrode of the power supply, and the electrode assembly 16 is connected to the positive electrode of the power supply, thereby achieving ionization at a lower voltage.

[0302] Preferably, the pole assembly 16 includes a plurality of columnar structures 161 , and two adjacent columnar structures 161 are spaced apart by a preset distance, and the preset distance is required to ensure that the electric fields generated by the corresponding columnar structures 161 do not interfere with each other.

[0303] In this embodiment, the electrode assembly 16 includes two columnar structures 161 spaced apart along the length of the electrode plate. The distance between the columnar structures 161 is positively correlated with the voltage across the two columnar structures 161. Furthermore, the distance between the columnar structures 161 corresponds to the area of the first electrode plate 11. The electric field generated by the two columnar structures 161 precisely covers the two first electrode plates 11, and the electric fields generated between adjacent columnar structures 161 do not interfere with each other.

[0304] Preferably, the columnar structure 161 extends along the width direction of the first electrode plate 11 , and the axis of the columnar structure 161 is parallel to the first electrode plate 11 .

[0305] In this embodiment, the length of the columnar structure 161 corresponds to the width of the first electrode plate 11, and the axis of the columnar structure 161 is parallel to the first electrode plate 11, so that the entire columnar structure 161 and the first electrode plate 11 generate an electric field, thereby forming an electric field that can ionize the air on the entire first electrode plate 11, thereby making the structure of the entire filter element simple, the production process simple, and the production cost low.

[0306] Preferably, the filter element structure further includes: a first connector 13 and a second connector 14 , the first connector 13 is connected to the first electrode plate 11 , the second connector 14 is connected to the pole assembly 16 , and the first connector 13 and the second connector 14 are relatively arranged on the frame 2 .

[0307] Preferably, both ends of the columnar structure 161 are connected to the frame 2 .

[0308] In this embodiment, both ends of the columnar structure 161 are connected to the second connecting member, and the second connecting member is connected to the frame; since both ends of the columnar structure are energized, the curvature of the entire columnar structure 161 is small, so that the entire columnar structure 161 forms a corona discharge, which increases the length of the discharge and can fully ionize the air, thereby increasing the evolution effect of the oil fume mixture.

[0309] In this embodiment, a quadrilateral frame 2 is provided, and a first connector 13 and a second connector 14 are both made of conductive materials. Specifically, the first connector 13 and the second connector 14 have the same structure. The first connector 13 includes a first connector and a first sleeve. The first connector connects the first electrode plates 11 in series. The first sleeve is mounted on the first connector, and the ends of the first sleeve respectively abut against two adjacent first electrode plates 11. The first connector is conductive. The ends of the first connector are inserted into the frame 2 and secured to the first electrode plates 11 by locking nuts at both ends of the connector. The first connector 13 is connected to the upper end of the frame 2, and the second connector 14 is connected to the middle of the frame 2. The second connector 14 is connected to the pole assembly 16. To ensure a more stable and balanced structure, two first connectors 13 and two second connectors 14 are provided. The two first connectors 13 connect the two ends of the first electrode plates 11, and the two second connectors 14 respectively connect the two ends of the columnar structures 161.

[0310] Preferably, Figure 9b As shown in FIG9 c , the pole assembly 16 further includes an elastic connector 162 , one end of the elastic connector 162 is connected to the columnar structure 161 , and the other end is connected to the second connector 14 ; and the elastic connector 162 is conductive.

[0311] In this embodiment, the elastic connector 162 includes a tension spring and a fixing component. The fixing component is sleeved on both ends of the columnar structure 161. The tension spring is connected to the second connector 14. A latch for engaging the tension spring can be provided on the second connector 14, thereby securing the tension spring to the second connector 14. The columnar structure 161 of the elastic connector 162 is configured to accommodate a greater variety of first electrode plates 11 having different widths. When the columnar structure 161 is hung on the second connector 14, the two elastic components deform to adjust the distance between the two second connectors 14, thereby connecting the two elastic connectors 162 to the second connectors 14.

[0312] Preferably, a space is provided on the first electrode plate 11 for the second connecting member 14 to pass through.

[0313] In this embodiment, two semicircular spaces are provided on either side of the length of the first electrode plate 11 for the second connector 14 to pass through, and the distance between the second connector 14 and the edge of the first electrode plate 11 meets a predetermined distance. The predetermined distance is required to ensure that the electric field generated by the second connector 14 interferes with the electric field generated by the first electrode plate 11. This space is arranged in a semicircular shape so that the distance between the second connector 14 and the edge of the first electrode plate 11 is always equal. Preferably, the distance between the second connector 14 and the edges of the first electrode plate 11 on both sides is less than 15 mm. It is worth noting that this distance is limited by the size of the first electrode plate 11.

[0314] The frame 2 includes: two oppositely arranged first fixing members 21 connected to the first connecting member 13; two oppositely arranged second fixing members 22 connected to the second connecting member 14, wherein the first fixing member 21 and the second fixing member 22 are insulated from each other.

[0315] In this embodiment, the first fixing member 21 and the second fixing member 22 are located on the same side of the frame 2 . The first fixing member 21 and the second fixing member 22 are used to fix the first connecting member 13 and the second connecting member 14 to fix the first electrode plate 11 and the second electrode plate 12 .

[0316] Example 10

[0317] Based on the embodiment 8 or embodiment 7 of the present invention, the filter element structure is further improved, specifically, the ionization zone of the filter element structure is improved. Figure 10a 、 Figure 10b This embodiment provides a purification filter element structure, including: a plurality of first pole pieces 171; a plurality of second pole pieces 172, the second pole pieces 172 are arranged at intervals; the second pole pieces 172 include a conductor and a discharge tip arranged on the conductor, the first pole piece 171 and the second pole piece 172 are separated by a preset distance, so that an electric field is formed when the discharge tip and the first pole piece 171 are energized.

[0318] In this embodiment, the second pole piece 172 is connected at one end to discharge at the tip. The first pole piece 171 is connected to the positive pole of the power supply, and the second pole piece 172 is connected to the positive pole of the power supply. The discharge tip on the second pole piece 172 forms a point-surface electric field with the first pole piece 171, so that the air is ionized at the discharge tip, and the oil fume mixture is attached with charged particles. In this embodiment, the first pole piece 171 is in the form of a surface, and the corona voltage of this combination is relatively low. The first pole piece 171 at the positive pole is positively charged and can adsorb negatively charged substances to a greater extent, and thus can better adsorb the oil fume mixture; it can ionize gases including the oil fume mixture, and thus has a better adsorption effect. In this embodiment, the discharge tip in each second pole piece 172 forms an electric field with the plane of the two adjacent first pole pieces 171, resulting in a point-to-surface uneven electric field. Therefore, at the point where the distance between the discharge tip and the first pole piece 171 is the shortest, the discharge ionizes the air containing the oil fume mixture, charging the oil fume mixture and causing it to adsorb onto the first and second pole pieces 171, 172, respectively. This achieves the effects of ionizing and adsorbing the oil fume mixture, thereby purifying the oil fume generated in the kitchen and reducing the amount of oil fume mixture discharged outdoors. This solves the technical problem of air pollution caused by kitchen appliances in the prior art, providing a smoke-free environment, reducing air pollution, and being environmentally friendly.

[0319] In this embodiment, the second pole piece 172 is configured to be needle-shaped, that is, a cylindrical conductor and a discharge tip provided on the conductor form the entire needle-shaped second pole piece 172; each second pole piece 172 is provided with a conductor, and a discharge tip is provided on the end of the conductor to form an electric field with the first pole piece, and corona discharge is formed at the discharge tip.

[0320] Preferably, each second pole piece 172 includes a plurality of conductors, and the discharge tips of two adjacent conductors are spaced apart by a preset distance, and the preset distance is required to ensure that the electric fields generated between the corresponding discharge tips do not interfere with each other.

[0321] In this embodiment, the conductors form a V-shaped structure, and the distance between the conductors is positively correlated with the voltage between them. The electric field generated between the discharge tips on the conductors just covers the first pole piece 171, and the electric fields generated between two adjacent discharge tips do not interfere with each other, thereby weakening the electric field strength and preventing the oil smoke from being fully ionized.

[0322] Preferably, the first pole piece 171 is a plate-shaped structure, and the first pole piece 171 and the second pole piece 172 are arranged in sequence and spaced apart.

[0323] In this embodiment, the conductor of the second pole piece 172 extends along the length direction of the first pole piece 171, that is, the axis of the conductor is parallel to the length direction of the first pole piece 171, and the discharge tip of the second pole piece 172 is located at a position corresponding to the middle of the first pole piece 171, so that the discharge tip and the first pole piece 171 form an electric field to ionize and adsorb the oil smoke mixture.

[0324] Preferably, the purification filter element structure includes at least two groups of first pole pieces 171 and two groups of second pole pieces 172 . Each group of first pole pieces is arranged at intervals along the flow direction of the airflow, and the second pole pieces 172 are arranged corresponding to the first pole pieces 171 .

[0325] In this embodiment, each set of first pole pieces 171 and each set of second pole pieces 172 form an ionization adsorption structure, with the two ionization adsorption structures positioned side by side along the airflow direction. This provides a graded ionization of the oil fume mixture, further enhancing the ionization and adsorption of the oil fume and reducing the amount of oil fume emitted into the air. In two adjacent sets of ionization adsorption structures, the two first pole pieces 171 are positioned in correspondence with each other, and the two second pole pieces are also positioned in correspondence with each other, effectively extending the electric field length of the first and second pole pieces 171.

[0326] Preferably, the purification filter element structure further includes: a frame 2, a first pole piece 171 fixedly connected to the frame 2, and the first pole piece 171 is insulated from the frame 2. Both ends of the second pole piece 172 are fixed to both sides of the frame 2, and the second pole piece 172 is insulated from the frame 2.

[0327] The frame body 2 is provided with a clamping portion for clamping the first pole piece 171 , and the second pole piece 172 is fixedly connected via a connecting piece.

[0328] Preferably, the frame 2 has insulating properties.

[0329] In this embodiment, the frame 2 is insulating, so that the first connecting member 13 and the second connecting member 14 are conductive. The end of the second connecting member 14 protrudes from the frame 2, and the end of the first connecting member 13 also protrudes from the frame 2, so that the frame 2 is insulating, preventing the human body from touching a large area of the frame 2 and causing electric shock, thereby improving the safety performance of the entire device.

[0330] Or as Figure 10c as well as Figure 10d As shown, the first pole piece 171 is in a frame shape. The first pole piece 171 surrounds the outer side of the second pole piece 172 , and the first pole piece 171 and the second pole piece 172 are coaxially arranged.

[0331] In this embodiment, the first pole piece 171 is configured in a frame shape, with multiple frames forming a honeycomb shape. The second pole pieces 172 are connected together via fixed connectors 183. The first pole piece 171 is sleeved onto the second pole piece 172, thereby forming an electric field between the discharge tip of the second pole piece 172 and the first pole piece 171. The needle-shaped second pole piece 172 forms a corona discharge within the first pole piece 171, ionizing the oil-fume mixture. The ionized oil-fume mixture continues to move, and the discharge tip of the second pole piece 172 forms an electric field with the first pole piece 171, causing it to be attracted to the first pole piece 171.

[0332] Preferably, the projection of the first pole piece 171 on a plane perpendicular to its own axis is a regular polygonal structure.

[0333] In this embodiment, adjacent pole frames 182 share a common edge. On the one hand, regular polygonal first pole pieces 171 are easier to process than circular first pole pieces 171, reducing the number of processing steps and production costs. On the other hand, the first pole pieces 171 appear regular polygonal when viewed from above, and each adjacent first pole piece 171 shares a common edge, ensuring a tight fit between the first pole pieces 171 and forming an electric field capable of ionizing air within each space. This prevents some spaces from generating an ionizing electric field, preventing ionized adsorption and discharge.

[0334] Preferably, the projection of the first pole piece 171 on a plane perpendicular to its own axis is a regular hexagon.

[0335] In this embodiment, the regular hexagonal first pole piece 171 forms a honeycomb filter element, and the distances from the pole 181 to the regular hexagonal first pole piece 171 are roughly equal, which further increases the volume of the effective electric field in the entire purification filter element structure and improves space utilization.

[0336] Example 11

[0337] Based on the examples 7 to 10, improvements are made to enable the filter element structure to have a self-cleaning function, and a UV self-cleaning purification filter element structure is provided. Figure 11a and 11b As shown, it includes: a first electrode plate 11 and a second electrode plate 12, the first electrode plate 11 and the second electrode plate 12 are alternately arranged at intervals, and when the first electrode plate 11 and the second electrode plate 12 are energized, an electric field is generated to adsorb the oil smoke mixture; an ultraviolet light source 91, and the ultraviolet light source 91 emits ultraviolet light toward the first electrode plate 11 and the second electrode plate 12.

[0338] In this embodiment, a UV light source 91 is provided corresponding to the filter element structure 1. After the UV light source 91 irradiates the filter element structure 1, the oil smoke on the filter element structure 1 is degraded and cracked by the light, and is separated from the filter element structure 1, thereby cleaning the filter element structure 1. Therefore, during use, the filter element structure 1 does not need to be removed for cleaning, which facilitates cleaning and solves the technical problem of the filter element structure 1 being difficult to clean in existing equipment.

[0339] Preferably, a catalyst layer is provided on the surface of the first electrode plate 11 and / or the second electrode plate 12 , and the catalyst layer cooperates with the ultraviolet light source 91 to decompose the oil fume mixture.

[0340] In this embodiment, a photocatalyst is provided on the surfaces of both the first electrode plate 11 and the second electrode plate 12. The photocatalyst is applied to the surface of the first electrode plate 11 or the second electrode plate 12 by coating. In other embodiments, depending on needs, such as to reduce production costs, the photocatalyst may be applied to the first electrode plate 11, which has a high adsorption capacity, or to the second electrode plate 12, which is located at the ionization tip. The provision of a catalyst layer accelerates the reaction of oil smoke under ultraviolet light catalysis, thereby accelerating the degradation of the oil smoke.

[0341] Furthermore, the filter element structure 1 further includes a housing 184 , which is disposed around the outside of the first electrode plate 11 and the second electrode plate 12 , and the housing 184 is insulated from the first electrode plate 11 and the second electrode plate 12 .

[0342] In this embodiment, the housing 184 is provided to prevent human hands from directly touching the interior of the filter element structure 1, thereby protecting the human body. Furthermore, the housing 184 is insulated from the first connector 13 and the second connector 14 to prevent the housing 184 from being electrically conductive and causing harm to the human body.

[0343] Preferably, the filter element structure 1 also includes: a first connecting member 13 and a second connecting member 14, the first connecting member 13 is connected to the first electrode plate 11, and the two ends of the first connecting member 13 are respectively connected to the two opposite ends of the outer shell 184; the second connecting member 14 is connected to the second electrode plate 12, and the two ends of the second connecting member 14 are respectively connected to the two opposite ends of the outer shell 184.

[0344] Preferably, the filter element structure 1 also includes an adsorption component (the structure of the adsorption component can refer to the adsorption component structure in other embodiments, and its principle is consistent with the principle of other embodiments, which will not be repeated here), and the adsorption component is arranged at one end of the first pole piece along the airflow direction, and is used to adsorb the oil fume mixture discharged from between the first pole piece and the second pole piece.

[0345] In this embodiment, the filter element structure 1 is in the shape of a rectangular parallelepiped as a whole, which facilitates the installation of the entire filter element structure 1 in other mechanisms, such as being adapted to the oil-fume mixture channel of an integrated stove.

[0346] Preferably, the housing 184 is insulative to avoid conduction on the housing 184 and harm to the human body, and the first connector 13 and the second connector 14 can be controlled independently of each other.

[0347] Preferably, the ultraviolet light source 91 is disposed on the inner side of the housing 184 .

[0348] In this embodiment, on the one hand, the ultraviolet light source 91 can be irradiated on the filter element structure 1, which facilitates catalytic degradation of the filter element structure 1; the ultraviolet light source 91 is set on the inner side of the shell 184 to prevent the ultraviolet light source 91 from irradiating to the outside and harming the human body.

[0349] Preferably, a plurality of ultraviolet light sources 91 are provided, and the ultraviolet light sources 91 are arranged at intervals along the direction in which the first electrode plates 11 are arranged.

[0350] In this embodiment, multiple UV light sources 91 are provided so that the UV light sources 91 can fully illuminate the filter element structure 1 and fully degrade the cooking fumes. Furthermore, the UV light sources 91 can be controlled individually or all at once. When the UV light sources 91 are controlled individually, if a user's cooking habits allow for a particular location to accumulate more cooking fumes, the UV light source 91 can be controlled individually to clean the location, thereby saving energy and protecting the environment.

[0351] Example 12

[0352] Based on the examples 7 to 10, improvements are made to enable the filter element structure to have a self-cleaning function, and a heating self-cleaning purification filter element device is provided accordingly. Figure 12a 、 Figure 12b as well as Figure 12c As shown, the purification filter element device includes: a frame 2, a filter element structure, which is arranged in the frame 2, including a first electrode plate 11 and a second electrode plate 12, the first electrode plate 11 and the second electrode plate 12 are arranged at intervals, and when the first electrode plate 11 and the second electrode plate 12 are energized, an electric field is generated to adsorb the oil fume mixture; a heating element 92, which is used to heat and clean the first electrode plate 11 and / or the second electrode plate 12 of the filter element structure to remove the oil fume mixture attached to the first electrode plate 11 and / or the second electrode plate 12.

[0353] In this embodiment, a heating element 92 is provided corresponding to the filter element structure. This heating element 92 heats the filter element structure, causing the oil smoke on the filter element structure to undergo physical reactions such as melting, degradation, cracking, and sublimation, thereby separating from the filter element structure and cleaning the filter element structure. Therefore, during use, the filter element structure does not need to be removed for cleaning, making it easy to clean. This solves the technical problem of the filter element structure being difficult to clean in existing equipment.

[0354] Preferably, the heating element 92 heats the first electrode plate 11 and / or the second electrode plate 12 .

[0355] In this embodiment, the first electrode plate 11 and the second electrode plate 12 are heated simultaneously. In other embodiments, one of the electrodes may be heated while the other electrode plate is auxiliary heated.

[0356] Preferably, the filter core structure further comprises a housing 184, which is disposed around the outside of the frame 2 and is insulated from the filter core structure. The filter core structure is connected to the housing 184, and the housing 184 has insulating properties.

[0357] In this embodiment, the housing 184 is insulated to prevent the first connector 13 and the second connector 14 from being electrically connected to the housing 184 and thereby causing harm to the human body.

[0358] Preferably, the heating element 92 is attached to the housing 184, and the housing 184 is thermally conductive. The housing 184 is configured as a rectangular frame, and the heating element 92 is configured as a resistance wire heating method. By being installed on the housing 184, the outer periphery of the housing 184 is heated, providing auxiliary heat to the surrounding areas of the filter structure, thereby increasing the rate of oil smoke degradation.

[0359] Preferably, the heating elements 92 are located on both sides of the filter structure along the airflow direction. The heating elements 92 are attached to both sides of the filter structure in the length direction, thereby increasing the heated area of the filter structure and increasing the speed of cleaning the oil smoke.

[0360] Preferably, the filter element structure includes an oxidation catalytic coating provided on the first electrode plate 11 and / or the second electrode plate 12 .

[0361] In this embodiment, copper oxide is provided on the surfaces of both the first electrode plate 11 and the second electrode plate 12. The copper oxide is applied to the surface of the first electrode plate 11 or the second electrode plate 12 by coating. In other embodiments, depending on needs, such as to reduce production costs, copper oxide may be applied to the first electrode plate 11, which has a high adsorption capacity, or to the second electrode plate 12, which is located at the ionization tip. The catalyst layer accelerates the reaction of the oil smoke under heating conditions, thereby accelerating the degradation of the oil smoke.

[0362] The heating element 92 may be installed in the following three positions, but is not limited to the following three positions:

[0363] like Figure 12a As shown, the shell covering the frame, the heating element 92 is attached to the shell 184, and the shell 184 has thermal conductivity and can conduct heat to the first electrode plate 11 and / or the second electrode plate 12; the heating element 92 is set on the shell 184.

[0364] As shown in 12b, the heating element is located in the first electrode plate 11 and / or the second electrode plate 12; specifically, the heating element 92 is arranged inside the first electrode plate 11; the heating element 92 is insulated from the first electrode plate 11, and the first electrode plate 11 and the heating element 92 are electrically independently connected.

[0365] As shown in 12c, a connector is provided in the frame, and a heating element 92 is located in the connector. The connector can conduct heat to the first electrode 11 and / or the second electrode 12; the connector is the third fixed connector 23 of the frame 2; the filter element structure is connected to the frame 2, and the heating element 92 is attached to the frame 2, and the frame 2 has thermal conductivity. By being provided on the frame 2, the frame 2 is heated, and the frame 2 heats the filter element structure, and heating is performed by physical heat conduction. The heating element 92 is provided in the third fixing element 23 of the frame 2, conducts heat to the first fixing element 21, and radiates heat to the first electrode 11 and the second electrode 12, thereby playing a heating role.

[0366] Preferably, the connector includes a first connector 13 and a second connector 14 , the first connector 13 connects the frame 2 and the first electrode plate 11 , the second connector 14 connects the frame and the second electrode plate 12 , and the heating element 92 heats the first connector 13 and the second connector 14 .

[0367] Implementation Method 4

[0368] Embodiment 4 of the present invention, based on the purification equipment (integrated stove, range hood device) and its filter element structure disclosed in Embodiments 1 to 3 above, describes in detail the process design, operating principle, and corresponding control method of the filter element structure of the purification equipment. For details on the purification equipment structure involved in this embodiment, please refer to Embodiments 1 to 3. Any purification equipment that does not conflict with the method in this embodiment is within the scope of protection of this embodiment.

[0369] Example 13

[0370] This embodiment provides a control method for an environmentally friendly integrated stove, which is used to control any one of the integrated stoves in Implementation Methods 1 and 3. It controls the entire integrated stove. The entire control method includes: overall operation control of the integrated stove, daily pressure control of the filter element structure, and self-cleaning control of the filter element structure. Some of these controls include different solutions, which will be described in detail in the following embodiments. The integrated stove includes: a stove; a filter element structure, which is provided on one side of the stove and is used to generate an electric field to ionize and adsorb oil smoke generated from the stove; a negative pressure mechanism, which is provided on one side of the filter element structure and is used to generate negative pressure to generate negative pressure on the oil smoke so that the oil smoke is adsorbed and purified by the filter element structure; such as Figure 13 As shown, the control method includes:

[0371] S400, detecting the concentration of oil smoke; the concentration of oil smoke can be detected by an oil smoke sensor, etc. Specifically, an oil smoke sensor can be set at the air inlet part of the filter structure, or an oil smoke sensor can be set near the stove of the integrated stove.

[0372] S401: Control the filter element structure and the negative pressure mechanism to start. The filter element structure generates an electric field to purify the oil smoke mixture. When oil smoke is detected, the negative pressure mechanism is controlled to start, and the filter element structure is also activated, thereby achieving the effect of real-time purification of oil smoke.

[0373] S402: When the concentration of the oil-fume mixture entering the filter element is detected to be lower than a preset concentration value, the filter element is stopped. The filter element is stopped by determining the concentration of the oil-fume mixture. Whether to stop the negative pressure mechanism is a user's choice.

[0374] In this embodiment, the concentration of the oil smoke mixture is obtained, the filter element structure and the negative pressure mechanism are controlled to open, and the oil smoke is ionized and adsorbed in real time to provide the user with a smoke-free operating environment.

[0375] Furthermore, the integrated stove also includes: an ultraviolet light source and a catalyst layer provided on the filter element structure. The control method also includes: controlling the ultraviolet light source to irradiate the filter element structure to further photolyze the oil fume mixture under the catalytic action of the catalyst layer before stopping the operation of the filter element structure when the concentration of the oil fume mixture entering the filter element structure is detected to be lower than a preset concentration value.

[0376] In this embodiment, the filter element structure is self-cleaned while the oil smoke is ionized and purified, so as to avoid excessive oil accumulation on the filter element structure, which may lead to breakdown and failure of the filter element structure.

[0377] Furthermore, when the negative pressure mechanism is turned off, the ultraviolet light source and the filter element structure are controlled to stop working.

[0378] In this embodiment, after the negative pressure is controlled to be closed, the ultraviolet light source stops working to prevent the ultraviolet light source from generating ozone and other odorous gases from being released into the air when cleaning oil smoke, causing discomfort to the user.

[0379] Furthermore, the ultraviolet light source and the negative pressure mechanism work simultaneously to perform self-cleaning on the filter element structure.

[0380] In this embodiment, when the ultraviolet light source illuminates the filter element structure, the oil smoke undergoes a series of reactions such as degradation and cracking under ultraviolet conditions, and particles or odors are generated; the ultraviolet light source and the negative pressure mechanism work simultaneously, and the negative pressure mechanism takes away the generated odorous gases, particles, etc. to avoid affecting the normal activities of the human body.

[0381] Furthermore, when the operating voltage of the filter element structure is lower than a preset voltage value or the operating power is lower than a preset power value, the ultraviolet light source and the negative pressure mechanism are started simultaneously to perform self-cleaning.

[0382] In this embodiment, when the operating voltage of the filter element structure is lower than the preset voltage value or the operating power of 6kV, it is considered that the filter element has too much oil accumulated and the purification efficiency cannot be achieved through voltage regulation. At this time, the filter element needs to be cleaned.

[0383] Furthermore, the integrated stove further comprises: a heating element provided corresponding to the filter element structure and an oxidation catalytic coating provided on the filter element structure, such as a metal oxide coating (copper oxide, etc.). The control method further comprises: before stopping the filter element structure when detecting that the concentration of the oil smoke mixture entering the filter element structure is lower than a preset concentration value:

[0384] The heating element is controlled to heat the filter element structure with the assistance of the oxidation catalytic coating to remove the oil and smoke mixture attached to the filter element structure.

[0385] In this embodiment, the catalyst layer can be a catalyst such as copper oxide or manganese dioxide, which accelerates the degradation rate with the help of the catalyst. In addition, the heating element can be provided with a heating wire for heating, and the heating element is installed on the outside of the filter structure.

[0386] Example 14

[0387] Based on the disclosure of the previous embodiments 1 to 13, this embodiment provides a control method for the aforementioned purification filter device, which is used to control the operation of the purification filter device. It can be combined with the control method of the integrated stove in embodiment 13 as a sub-control link in the control method of the integrated stove, and as part of its control filter structure when controlling the entire integrated stove. Figure 14 As shown, specifically including:

[0388] S300, respectively obtaining the breakdown frequency of each filter core layer structure; separately obtaining the breakdown frequency of each filter core layer structure;

[0389] S301. Determine whether the breakdown frequency is within a preset range; if the preset range is 5 breakdowns per 10 seconds, it is determined to be continuous breakdown. At this time, it is considered that too much oil has accumulated on the filter layer structure, and the corresponding voltage value needs to be controlled.

[0390] If so, S302 controls the operating voltage of the corresponding filter layer structure to be reduced by a specified value. The voltage is reduced to a certain value, typically by 0.3 kV, as a unit of reduction. In other embodiments, the voltage reduction value can be dynamically adjusted based on practical application and the breakdown frequency.

[0391] Furthermore, the controlling of reducing the working voltage corresponding to the filter element layer structure by a specified value includes: obtaining a spacing distance between the first electrode plate and the second electrode plate, and calculating the specified value according to the spacing distance.

[0392] In this embodiment, the breakdown voltage between the first and second plates is limited by the spacing between the first and second plates. The voltage is reduced by a specified value according to the spacing so that the reduced voltage can reach the corona discharge voltage while also achieving the effect of preventing breakdown.

[0393] Furthermore, the method also includes: obtaining the current working voltage of each filter layer structure; judging whether the current working voltage of the filter layer structure is lower than the preset value or whether the current working power is lower than the preset power; if so, stopping power supply to the corresponding filter layer structure.

[0394] In this embodiment, when the operating voltage is lower than 6kV, frequent breakdown occurs to avoid damage to the filter element. At this time, the corresponding filter element layer structure is controlled to stop working. Since each filter element layer structure is independently controlled, the other filter elements continue to work to absorb the oil smoke mixture.

[0395] Preferably, when the current operating voltages of all filter layer structures are lower than the preset value or the current operating power is lower than the preset power, an alarm is triggered.

[0396] In this embodiment, if the voltage of all filter element layer structures is lower than the preset voltage value, the preset purification efficiency value cannot be achieved by adjusting the voltage separately. If the filter element is considered to be failed, an alarm will be issued and the filter element structure needs to be controlled and cleaned.

[0397] Preferably, the purification device further includes a self-cleaning mechanism; after stopping power supply to the corresponding filter layer structure, the method further includes: controlling to turn on the self-cleaning mechanism to clean the corresponding filter layer structure.

[0398] In this embodiment, the cleaning mechanism can be an ultraviolet light source to degrade the oil smoke, or a heating element to heat and degrade the oil smoke. During use, there is no need to remove the filter element structure for cleaning. It has the function of easy cleaning, which solves the technical problem of the filter element structure being difficult to clean in existing equipment.

[0399] Example 15

[0400] On the basis of the previous embodiments 1 to 14, embodiment 15 of the present invention further considers adopting a partitioned voltage control method for the filter element structure of the purification filter element device to enable each filter element layer structure in the filter element structure to work independently. Accordingly, this embodiment provides a control method for a purification filter element device with partitioned voltage control, which is used to independently control the operation of the filter element structure in partitions and can be selectively applied to an integrated stove. The integrated stove includes: a stove; a filter element structure, the filter element structure is arranged corresponding to the stove, and the filter element structure includes a number of filter element layer structures that are independently controlled from each other, each of the filter element layer structures is used to generate an electric field for adsorbing the oil fume mixture after being energized, and each of the filter element layer structures is arranged at intervals along the moving direction of the oil fume mixture; a negative pressure mechanism, which is used to generate negative pressure so that the oil fume mixture passes through each of the filter element layer structures in turn.

[0401] like Figure 15 As shown, the control method includes:

[0402] S500, detecting the concentration of the oil smoke mixture;

[0403] S501, controlling each of the filter layer structures and the negative pressure mechanism to start, so that each of the filter layer structures generates an electric field to purify the oil fume mixture;

[0404] S502: When it is detected that the concentration of the oil-fume mixture entering each filter layer structure is lower than a preset concentration value, the filter structure is stopped.

[0405] Preferably, a breakdown frequency is obtained for each filter layer structure to determine whether the breakdown frequency is within a preset range; if so, the operating voltage or operating power of the corresponding filter layer structure is controlled to be reduced to a specified value.

[0406] In this embodiment, the preset range is 5 breakdowns per 10 seconds, which is considered continuous breakdown. At this time, it is considered that there is too much oil accumulation on the filter layer structure, and the corresponding voltage value needs to be controlled. The specified value can refer to the calculation method of Example 13.

[0407] The above breakdown number evaluation is only a preferred option proposed in this embodiment. In other embodiments, corresponding adjustments can be made according to the user's own needs to meet the user's different scenario requirements.

[0408] Preferably, the operating voltage or operating power of each filter layer structure is dynamically adjusted under the premise of meeting the preset purification efficiency.

[0409] In this embodiment, when the purification efficiency is guaranteed to be above 95%, the filter layer structure close to the air inlet end of the filter structure can be specifically set to keep working, adjust the working voltage of other filter layers, or even turn off the working power of other filter elements. While ensuring the purification efficiency, energy consumption is reduced, the utilization rate of the filter layer structure is increased, and the effect of energy saving is achieved.

[0410] Preferably, when the working voltage or working power of the filter core layer structure drops to a preset minimum limit, the filter core layer structure stops working and dynamically adjusts the working voltage or working power of the remaining filter core layer structures in working state.

[0411] In this embodiment, when one of the filter layer structures is invalid in ionization adsorption and the preset purification efficiency value cannot be achieved by adjusting the voltage, the filter layer structure is considered to be failed, and the current filter layer structure is closed, and the working voltage of other layers is dynamically adjusted.

[0412] Preferably, the filter layer structure includes: a first sensor and a second sensor respectively arranged upstream and downstream of the filter structure for detecting the concentration of the oil fume mixture, and the purification efficiency is obtained by the following method:

[0413] obtaining a first concentration of the oil smoke mixture detected by the first sensor;

[0414] obtaining a second concentration of the oil smoke mixture detected by the second sensor;

[0415] The purification efficiency of the filter element structure is obtained according to the first concentration and the second concentration.

[0416] In this embodiment, the first concentration A and the second concentration B are obtained by obtaining the purification efficiency, that is, comparing the oil fume concentration entering the filter element with the oil fume concentration after purification, and the purification efficiency is: (AB) / A; if the oil fume purification efficiency reaches 95% (of course, this value can be set arbitrarily as needed, such as 90%, 85%, etc.), it means that the purification effect of the filter element structure has deteriorated, which means that it needs to be cleaned to keep the purification efficiency of the filter element structure within a certain range.

[0417] Preferably, when ensuring that the purification efficiency meets the preset purification efficiency, the operating voltage or the operating power of each filter layer structure is reduced.

[0418] In this embodiment, when the purification efficiency is guaranteed to be above 95%, the filter layer structure close to the air inlet end of the filter structure can be specifically set to keep working, adjust the working voltage of other filter layers, or even turn off the working power of other filter elements. While ensuring the purification efficiency, energy consumption is reduced, the utilization rate of the filter layer structure is increased, and the effect of energy saving is achieved.

[0419] The above purification efficiency is only a preferred option proposed in this embodiment. In other embodiments, the purification efficiency and the filter layer operating voltage can be adjusted accordingly according to the user's own needs to meet the user's different scenario needs.

[0420] Specific example of integrated stove voltage division electric field control process

[0421] Layered control of the filter's structure includes several ionized layers and several adsorption layers. The ionized layers and adsorption layers are arranged according to a specific pattern. The voltage output can identify the order in which the filter layers are placed.

[0422] Get the preset value of purification efficiency, such as 95%.

[0423] When the stove is started, the oil fume sensor identifies the oil fume concentration. When the preset value of the oil fume concentration is reached, the purification electric field is turned on. Under the premise of ensuring that the purification efficiency is maintained above the preset value, the working voltage or working power of the last filter layer (against the airflow direction) passing through the airflow direction is reduced according to the preset value until the working voltage or working power of the filter layer drops to the minimum limit. If the purification efficiency is still above the preset value, the working voltage or working power of the working layer above the filter layer is reduced, and so on, until the purification efficiency reaches the preset value.

[0424] When the purification efficiency reaches below the preset value during use, it is necessary to increase the working voltage or working power of the filter element layer in the opposite control order of the above-mentioned filter element layer (along the airflow direction) until the working voltage or working power of the filter element layer reaches the maximum limit. If the purification efficiency is still below the preset value, the working voltage or working power of the next working layer of the filter element layer is increased, and so on, until the purification efficiency reaches above the preset value.

[0425] During the electric field working stage, if the filter layer is seriously oil-accumulated and frequently breaks down, the working voltage or working power of the layer will be reduced by a preset value until it can work normally. If the working voltage or working power of the filter layer is reduced to the minimum limit, the power supply of the voltage output end of the layer will be turned off, and it is considered that the filter layer has failed due to serious oil accumulation. The embodiment of the present invention takes the breakdown protection of the filter structure and the voltage division control after the breakdown to ensure the purification efficiency as the highest priority rule in the electric field control method. This ensures that the purification equipment can make dynamic adjustments at any time according to the situation during the process of purifying the oil fume mixture, and also facilitates the design of the control logic of the purification equipment.

[0426] Example 16

[0427] Based on the disclosure of the previous embodiments 1 to 15, this embodiment processes the oil smoke mixture attached to the filter structure itself. This embodiment uses an ultraviolet light source to clean the oil smoke mixture attached to the filter structure. Accordingly, a method for controlling a filter structure with ultraviolet self-cleaning function is provided. This method can be used in combination with the previous embodiments. For example, after the partial pressure control is performed in embodiment 15, the self-cleaning function is turned on. Of course, the method of this embodiment can also be used alone and can also achieve better cleaning effects. Figure 16 As shown, including:

[0428] S100. Obtain the operating voltage and / or operating power between the first electrode plate and the second electrode plate, and determine whether the operating voltage is lower than a preset value or whether the operating power is lower than a preset power value; the operating voltage between the first electrode plate and the second electrode plate is generally 6kV-11kV, therefore, determine whether the minimum operating voltage is lower than the previously set operating voltage value. If so, it is considered that the electric field between the first electrode plate and the second electrode plate cannot achieve a good ionization adsorption effect, indicating that the layer needs to be cleaned.

[0429] S101. If the operating voltage is lower than a preset value or the operating power is lower than a preset power value, the ultraviolet light source is controlled to emit light of a preset wavelength. This indicates that a breakdown has occurred, and if the voltage drops below the preset operating voltage after breakdown, it indicates that a large amount of oil smoke is attached to the entire filter element structure, and the oil smoke on the surface of the filter element structure needs to be cleaned. The cleaning mode is set to ultraviolet radiation cleaning, and the ultraviolet light source is activated to perform radiation to clean the oil smoke on the first and second plates. This indicates that a breakdown has occurred, and a large amount of oil smoke is attached to the entire filter element structure, indicating that the oil smoke on the surface of the filter element structure needs to be cleaned.

[0430] S102: Determine whether the radiation result meets the predetermined termination condition. If so, control the ultraviolet light source to stop irradiating the first and second plates. Meeting the predetermined termination condition means that the oil-fume mixture on the filter element structure has been cleaned and normal communication between the first and second plates has been restored.

[0431] In this embodiment, by detecting changes in the filter structure's operating voltage or power, a UV light source is controlled to illuminate the first and second plates within the filter structure. This light radiation causes the oil and fume mixture on the first and second plates to undergo photocatalytic degradation, cracking, and other chemical reactions, resulting in its removal from the filter structure, thereby cleaning the filter structure. Therefore, during use, the filter structure does not need to be removed for cleaning, facilitating cleaning and resolving the technical issue of difficult-to-clean filter structures in existing devices.

[0432] Furthermore, determining whether the radiation result has met a preset termination condition includes: obtaining a change in the total weight of the first and second plates in real time; and determining that the radiation result has met the preset termination condition if the change in the total weight is within a preset range. A pressure sensor is provided to obtain a change in the total weight of the first and second plates; when the total weight of the first and second plates becomes lighter, cleaning is complete, and heating and cleaning the filter element is terminated.

[0433] Furthermore, after determining whether the radiation result has reached the preset end condition, the method further includes: obtaining the rate of change of the total weight of the first electrode plate and the second electrode plate, and controlling the output power of the ultraviolet light source according to the rate of change. The rate of change reflects the degree of separation of the oil smoke between the first electrode plate and the second electrode plate. Generally speaking, in the early stage of ultraviolet irradiation, the temperature rises slowly, and the rate of change of the total weight is small at this time, so it is necessary to continue to heat up; after a period of ultraviolet irradiation, the rate of change of the total weight is large, and the temperature is kept rising for a period of time, which means that the reaction speed is faster. In the later stage of ultraviolet irradiation, most of the oil smoke has been cleaned, and ultraviolet irradiation does not need to be carried out for too long. Dynamic adjustment of the intensity of ultraviolet light is achieved, so that the change in the intensity of ultraviolet light adapts to the rate of change between the first electrode plate and the second electrode plate, which has an energy-saving effect.

[0434] Furthermore, the determination of whether the radiation result has reached the preset end condition further includes: obtaining the total radiation time, and if the total radiation time reaches a preset value, determining that the radiation result has reached the preset end condition. The user can set the cleaning to be completed by default according to a custom time.

[0435] Furthermore, a first sensor and a second sensor for detecting the concentration of the oil fume mixture are respectively provided upstream and downstream of the filter element structure, and the control method also includes: obtaining a first concentration value A of the oil fume mixture detected by the first sensor; obtaining a second concentration value B of the oil fume mixture detected by the second sensor; obtaining the purification efficiency of the filter element structure based on the first concentration value A and the second concentration value B; when the purification efficiency is lower than the preset purification efficiency, turning on the ultraviolet light source to clean the filter element structure.

[0436] By obtaining the purification efficiency, that is, comparing the oil fume concentration entering the filter element with the oil fume concentration after purification, the purification efficiency is: (AB) / A; if the oil fume purification efficiency reaches 95% (of course, this value can be set arbitrarily according to needs), it means that the purification effect of the filter element structure has deteriorated, which means that it needs to be cleaned to keep the purification efficiency of the filter element structure within a certain range.

[0437] Furthermore, the determination of whether the radiation result has reached the preset termination condition also includes: when the purification efficiency is greater than the preset purification efficiency, turning off the ultraviolet light source to clean the filter structure. When a fume mixture is generated, the purification efficiency reaches a preset value, usually set at above 95%, and the ultraviolet light source is turned off for cleaning, which has the advantage of energy saving. The above purification efficiency is only a preferred option proposed in this embodiment. In other embodiments, the purification efficiency and the operating voltage of the filter layer can be adjusted accordingly according to the user's own needs to meet the user's different scenario requirements.

[0438] Furthermore, the determination of whether the radiation result has reached the preset end condition also includes: acquiring a surface image of the first electrode plate and / or the second electrode plate after being irradiated in real time, comparing the surface image with the preset image to obtain a comparison result; and determining whether the radiation result has reached the preset end condition based on the comparison result. An image acquisition device is provided to visually determine the oil smoke accumulation in each area, thereby automatically controlling the cleaning of the corresponding area. In addition, the present invention can also determine whether to continue cleaning by evaluating the purification efficiency of the generated oil smoke mixture. When it is determined that the purification efficiency has reached or exceeded the preset purification efficiency value, the cleaning can be turned off.

[0439] Furthermore, a plurality of ultraviolet light sources are provided, and the plurality of ultraviolet light sources are sequentially spaced apart along the arrangement direction of the first electrode plate; and the method further comprises:

[0440] Dividing the first electrode plate and the second electrode plate into a plurality of areas;

[0441] respectively acquiring initial images of the first electrode plate and / or the second electrode plate corresponding to each of the regions;

[0442] Comparing the initial image with a preset image to obtain a comparison result;

[0443] The ultraviolet light source in the corresponding area is controlled to be turned on or off according to the comparison result.

[0444] In this embodiment, due to user habits in integrated stoves or other environments, which can lead to a high accumulation of oil in areas prone to fumes, the first electrode plate is divided into several zones. Users can manually activate the corresponding heating element for cleaning based on their habits, while the heating element is deactivated for areas that do not require cleaning, thus achieving energy savings. Furthermore, an image acquisition device is provided to visually determine the oil accumulation in each zone, enabling automatic control of the cleaning of the corresponding zone.

[0445] Furthermore, the obtaining of the operating voltage and / or operating power between the first electrode plate and the second electrode plate, and determining whether the operating voltage is lower than a preset value or whether the operating power is lower than a preset power value include: obtaining a breakdown frequency between the first electrode plate and the second electrode plate, and adjusting the operating voltage or operating power of the first electrode plate and the second electrode plate according to the breakdown frequency.

[0446] In this embodiment, the breakdown frequency between the first plate and the second plate is obtained. If the breakdown occurs 5 times within 10 seconds, it is determined to be a continuous breakdown. Specifically, there are many reasons for the breakdown phenomenon, such as excessive oil accumulation on the first plate and the second plate, or the instantaneous concentration of the oil smoke mixture between the first plate and the second plate is too high to achieve conduction. When the breakdown frequency reaches a certain frequency, it is considered to be caused by excessive oil accumulation. At this time, the corresponding voltage value needs to be adjusted accordingly. Generally speaking, the more frequent the breakdown, the more the value needs to be reduced. Generally speaking, it is reduced by 0.3Kv. Until the voltage drops to 6Kv, it is considered that the filter element has failed and the power needs to be turned off for cleaning.

[0447] Furthermore, the range of the operating voltage and / or operating power between the first electrode plate and the second electrode plate is determined by:

[0448] Setting the radius of curvature of the teeth on a single first electrode plate for corona discharge, and the distance between the first electrode plate and the adjacent second electrode plate;

[0449] Get the temperature of the oil-fume mixture in the filter structure,

[0450] determining a density factor of the oil-fume mixture according to the temperature, and determining a critical electric field intensity on the first electrode plate during corona discharge according to the density factor of the oil-fume mixture and the curvature radius;

[0451] determining a critical voltage between the first electrode plate and the second electrode plate according to the critical electric field strength and the curvature radius;

[0452] Obtaining the concentration of a main component in the oil fume mixture, determining the ion mobility of the main component in the oil fume mixture according to the temperature, and determining the ion mobility of the oil fume mixture according to the concentration and the ion mobility of the substance at the concentration;

[0453] Obtaining a corona current value on the first electrode plate during corona discharge;

[0454] The operating voltage and / or operating power is determined according to the ion mobility of the oil smoke mixture, the critical voltage, the curvature radius, the corona current value, and the distance between the first electrode plate and the second electrode plate.

[0455] In this embodiment, the main component in the oil fume mixture refers to the main gas component in the oil fume. Generally speaking, decane accounts for the largest proportion of hydrocarbons, so decane is used to replace hydrocarbons. 2-methyl-1-pentanol accounts for the largest proportion of alcohol phenol ethers, so 2-methyl-1-pentanol is used to represent alcohol phenol ethers. In other words, the ion mobility of a single gas under a specific temperature and pressure can be obtained by looking up a table and calculating a formula. The ion mobility of the oil fume mixture can be calculated by the concentration and ion mobility of each single gas. According to the experimental test data in the literature, hydrocarbons account for 85% of the concentration of the oil fume mixture, and alcohol phenol ether accounts for 15%. In this embodiment, the ion mobility is the movement speed of ions under unit electric field strength. After the corona current value is set to an appropriate value, the operating voltage can be obtained through the corona current value, the mixture ion mobility, the single tooth curvature radius and the calculated critical voltage.

[0456] Example 17

[0457] Based on the disclosures of the previous embodiments 1 to 16, this embodiment provides a control method for a heated self-cleaning purification filter element device, which automatically cleans and purifies the filter element structure by heating. Of course, the control method in this embodiment can also be combined with the previous embodiments, such as combining it with the ultraviolet self-cleaning of embodiment 16, to achieve a better cleaning effect. Of course, the heating method for cleaning the filter element structure in this embodiment can also be used independently to achieve a good cleaning effect. The method includes:

[0458] S200 obtains the working voltage or working power between the first electrode plate and the second electrode plate, and determines whether the working voltage is lower than a preset value or whether the working power is lower than a preset power value; the working voltage between the first electrode plate and the second electrode plate is generally 6kV-11kV, therefore, it is determined whether the working voltage is lower than the previously set working voltage value. If it is lower, it is considered that the electric field between the first electrode plate and the second electrode plate cannot achieve a good ionization adsorption effect, indicating that the layer needs to be cleaned.

[0459] S201 If the working voltage is lower than the preset value or the working power is lower than the preset power value, the heating element is heated to a preset temperature range; the preset temperature range is set to 80 degrees Celsius-110 degrees Celsius; that is, after a breakdown, a voltage drop occurs, and after the voltage drop operation drops to the preset working voltage, it indicates that there is a lot of oil smoke attached to the entire filter element structure, and the oil smoke on the surface of the filter element structure needs to be cleaned. The cleaning mode is set to a heating and cleaning mode, and the heating element is started for heating. Of course, this value is only a preferred value proposed in this embodiment. In other embodiments, other temperature ranges can be used to achieve the same technical effect.

[0460] S202 determines whether a preset heating end condition is met, and if so, controls the heating element to stop heating the filter element structure. Meeting the preset heating end condition means that the oil smoke mixture on the filter element structure is cleaned and the first electrode plate and the second electrode plate are restored to normal.

[0461] In this embodiment, by detecting changes in the filter structure's operating voltage or power, the heating element is controlled to heat the filter structure's first and / or second plates. This heating causes the oil smoke on the first and / or second plates to undergo a physical reaction, such as melting, degradation, cracking, or sublimation, and to separate from the filter structure, thereby cleaning the filter structure. Therefore, during use, the filter structure does not need to be removed for cleaning, facilitating cleaning and resolving the technical issue of difficult-to-clean filter structures in existing equipment.

[0462] Preferably, the determining whether the preset heating end condition is met includes: obtaining the total weight change of the first electrode plate and the second electrode plate in real time, and if the total weight change is within a preset range, determining that the preset heating end condition is met.

[0463] In this embodiment, a pressure sensor is provided to obtain the total weight change of the first electrode plate and the second electrode plate. When the total weight of the first electrode plate and the second electrode plate becomes lighter, it means that the cleaning is completed, and the heating and cleaning of the filter element is terminated.

[0464] Preferably, after determining whether a preset heating end condition is reached, the method further comprises: obtaining a rate of change of the total weight of the first electrode plate and the second electrode plate, and controlling the heating temperature of the heating element according to the rate of change.

[0465] In this embodiment, the rate of change reflects the degree of separation of oil smoke between the first and second plates. Generally speaking, in the early stages of heating, the temperature rises slowly, and the rate of change of the total weight is small, so continuous heating is required. After heating for a period of time, the rate of change of the total weight is large, and maintaining the temperature for a period of time means that the reaction speed is fast. In the later stages of heating, the oil smoke is mostly removed, so excessively high temperatures are not required, and the temperature is lowered. Dynamic temperature adjustment is achieved to ensure that the temperature change matches the rate of change between the first and second plates, which has an energy-saving effect.

[0466] Preferably, the determining whether the preset heating end condition is reached further comprises: obtaining the total heating time, and if the total heating time reaches a preset value, determining that the heating result reaches the preset end condition.

[0467] In this embodiment, the user can complete cleaning by default according to a customized time.

[0468] Preferably, a first sensor and a second sensor for detecting the concentration of the oil-fume mixture are respectively provided upstream and downstream of the filter element structure, and the control method further comprises:

[0469] Obtaining a first concentration value A of the oil smoke mixture detected by the first sensor;

[0470] Obtaining a second concentration value B of the oil smoke mixture detected by the second sensor;

[0471] Obtaining a purification efficiency of the filter element structure according to the first concentration value A and the second concentration value B;

[0472] When the purification efficiency is lower than a preset purification efficiency, the heating element is turned on to clean the filter element structure.

[0473] In this embodiment, by obtaining the purification efficiency, that is, comparing the oil fume concentration entering the filter element with the oil fume concentration after purification, the purification efficiency is: (AB) / A; if the oil fume purification efficiency reaches 95% (of course, this value can be set arbitrarily according to needs), it means that the purification effect of the filter element structure has deteriorated, which means that cleaning is required to keep the purification efficiency of the filter element structure within a certain range.

[0474] Preferably, the determining whether a preset heating termination condition is reached includes:

[0475] acquiring in real time a surface image of the first electrode plate and / or the second electrode plate after being heated, and comparing the surface image with the preset image to obtain a comparison result;

[0476] It is determined whether the heating result reaches a preset heating end condition according to the comparison result.

[0477] In this embodiment, an image acquisition device is provided to visually judge the oil accumulation condition in each area, thereby automatically controlling the cleaning of the corresponding area.

[0478] Preferably, there are multiple heating elements, and the control method includes:

[0479] Dividing the first electrode plate and the second electrode plate into a plurality of areas;

[0480] respectively acquiring initial images of the first electrode plate and / or the second electrode plate corresponding to each of the regions;

[0481] Comparing the initial image with a preset image to obtain a comparison result;

[0482] The heating element in the corresponding area is controlled to be turned on or off according to the comparison result.

[0483] In this embodiment, due to user habits in integrated stoves or other environments, which can lead to a high accumulation of oil in areas prone to fumes, the first electrode plate is divided into several zones. Users can manually activate the corresponding heating element for cleaning based on their habits, while the heating element is deactivated for areas that do not require cleaning, thus achieving energy savings. Furthermore, an image acquisition device is provided to visually determine the oil accumulation in each zone, enabling automatic control of the cleaning of the corresponding zone.

[0484] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heating self-cleaning purification filter element device, characterized in that: The heating self-cleaning purification filter element equipment includes: Frame, The filter element structure is provided in the frame, and includes a first electrode plate and a second electrode plate, wherein the first electrode plate and the second electrode plate are arranged in an intersecting manner, and the spacing between the first electrode plate and the second electrode plate is required to generate an electric field that adsorbs the oil smoke mixture after power is applied; The heating element is used to heat and clean the first electrode plate and / or the second electrode plate of the filter element structure to remove the oil-fume mixture attached to the first electrode plate and / or the second electrode plate.

2. The heating self-cleaning purification filter element device according to claim 1, characterized in that: The filter element structure includes an oxidation catalytic coating provided on the first electrode plate and / or the second electrode plate.

3. The heating self-cleaning purification filter element device according to claim 1, characterized in that: The heating element is located in the first electrode plate and / or the second electrode plate.

4. The heating self-cleaning purification filter element device according to claim 1, characterized in that: A connecting piece is provided in the frame, and the heating piece is located in the connecting piece. The connecting piece can conduct heat to the first electrode plate and / or the second electrode plate.

5. The heating self-cleaning purification filter element device according to claim 1, characterized in that: The heating self-cleaning purification filter element device further includes: a shell covering the frame, the heating element is attached to the shell, and the shell has thermal conductivity and can conduct heat to the first electrode plate and / or the second electrode plate.

6. The heating self-cleaning purification filter element device according to claim 1, characterized in that: The filter element structure is connected to the frame, and the heating element is attached to the frame. The frame has thermal conductivity and can conduct heat to the first electrode plate and / or the second electrode plate.

7. The heating self-cleaning purification filter element device according to claim 4, characterized in that: The connecting member includes a first connecting member and a second connecting member, the first connecting member connects the frame and the first electrode plate, the second connecting member connects the frame and the second electrode plate, and the heating member heats the first connecting member and the second connecting member.

8. A control method for a heating self-cleaning purification filter element device, characterized in that: The method includes: obtaining an operating voltage or an operating power between a first electrode plate and a second electrode plate, and determining whether the operating voltage is lower than a preset value or whether the operating power is lower than a preset power value; If the operating voltage is lower than a preset value or the operating power is lower than the preset power value, the heating element is heated to a preset temperature range; Determining whether a preset heating end condition is reached, and if so, controlling the heating element to stop heating the filter element structure; The first electrode plate and the second electrode plate are arranged to be spaced apart and crossed, and the spacing between the first electrode plate and the second electrode plate needs to be sufficient to generate an electric field that adsorbs the oil smoke mixture after power is applied.

9. The control method of the heating self-cleaning purification filter device according to claim 8, characterized in that: The determining whether the preset heating end condition is met includes: obtaining the total weight change of the first electrode plate and the second electrode plate in real time, and determining that the preset heating end condition is met if the total weight change is within a preset range.

10. The control method of the heating self-cleaning purification filter element device according to claim 9, characterized in that: After determining whether the preset heating end condition is reached, the method further includes obtaining a rate of change of the total weight of the first electrode plate and the second electrode plate, and controlling the heating temperature of the heating element according to the rate of change.

11. The control method of the heating self-cleaning purification filter element device according to claim 8, characterized in that: The determining whether the preset heating end condition is reached also includes: obtaining the total heating time, and if the total heating time reaches a preset value, determining that the heating result reaches the preset end condition.

12. The control method of the heating self-cleaning purification filter element device according to claim 8, characterized in that: A first sensor and a second sensor for detecting the concentration of the oil-fume mixture are respectively provided upstream and downstream of the filter element structure. The control method further comprises: Obtaining a first concentration value A of the oil smoke mixture detected by the first sensor; Obtaining a second concentration value B of the oil smoke mixture detected by the second sensor; Obtaining a purification efficiency of the filter element structure according to the first concentration value A and the second concentration value B; When the purification efficiency is lower than a preset purification efficiency, the heating element is turned on to clean the filter element structure.

13. The control method of the heating self-cleaning purification filter element device according to claim 8, characterized in that: The determining whether the preset heating end condition is met includes: acquiring in real time a surface image of the first electrode plate and / or the second electrode plate after being heated, and comparing the surface image with a preset image to obtain a comparison result; It is determined whether the heating result reaches a preset heating end condition according to the comparison result.

14. The control method of the heating self-cleaning purification filter element device according to claim 13, characterized in that: There are several heating elements, and the control method includes: Dividing the first electrode plate and the second electrode plate into a plurality of areas; respectively acquiring initial images of the first electrode plate and / or the second electrode plate corresponding to each of the regions; Comparing the initial image with a preset image to obtain a comparison result; The heating element of the corresponding area is controlled to be turned on or off according to the comparison result.

Images