Air purifying apparatus and control method thereof

Abstract

The application relates to the technical field of air purification equipment, and discloses air purification equipment and a control method thereof. The air purification equipment comprises an electrostatic dust removal device, a filter screen device and a humidity adjusting device. The humidity adjusting device is suitable for reducing the air humidity entering the electrostatic dust removal device and / or increasing the air humidity entering the filter screen device, so as to improve the purification performance of the air purification equipment. The humidity adjusting device can at least improve the purification efficiency of one of the electrostatic dust removal device and the filter screen device, creates conditions for fully exerting the purification performance of the air purification equipment, and improves the comprehensive purification performance of the air purification equipment.

Description

Technical Field

[0001] This invention relates to the field of air purification equipment technology, specifically to an air purification device and its control method. Background Technology

[0002] Electrostatic and filtration hybrid air purifiers combine the advantages of electrostatic air purification and physical filters. Air is first purified by electrostatic dust removal and then by physical filtration. The electrostatic dust removal principle uses a high-voltage electrostatic field to ionize the gas, electrolyzing and adsorbing dust particles onto the electrodes, while simultaneously releasing negative ions. The filtration system uses the mesh size of the filter to remove particulate matter from the air.

[0003] The purification performance of electrostatic and filtration methods differs significantly under different humidity conditions. For filter-based purification, the purification efficiency increases with increasing relative humidity within the range of 35% to 60%; however, for electrostatic dust removal, the purification efficiency decreases with increasing relative humidity.

[0004] In electrostatic and filter-based air purifiers, the air humidity remains unchanged during the purification process, which prevents the purifier from achieving its maximum purification efficiency and thus hinders further improvement in purification performance. Summary of the Invention

[0005] In view of this, the present invention provides an air purification device and its control method to solve the technical problem that the purification efficiency of electrostatic and filtration composite air purifiers is limited under certain air humidity conditions.

[0006] In a first aspect, the present invention provides an air purification device, including an electrostatic dust removal device, a filter device, and a humidity regulating device, wherein the humidity regulating device is adapted to reduce the humidity of the air entering the electrostatic dust removal device and / or increase the humidity of the air entering the filter device, so as to improve the purification performance of the air purification device.

[0007] The humidity control device reduces the humidity of the air entering the electrostatic precipitator and / or increases the humidity of the air entering the filter device, which can improve the purification efficiency of at least one of the electrostatic precipitator and the filter device, creating conditions for fully utilizing the purification performance of the air purification equipment and thus improving the overall purification performance of the air purification equipment.

[0008] The humidity control device employs three methods: first, it reduces the humidity of the air entering the electrostatic precipitator; second, it increases the humidity entering the filter; and third, it reduces the humidity of the air entering the electrostatic precipitator and increases the humidity entering the filter. The beneficial effects are analyzed below:

[0009] For electrostatic precipitators, increasing relative humidity makes it more difficult to generate static electricity, thus hindering the effectiveness of electrostatic dust removal. Furthermore, when relative humidity exceeds 50%, the rapid dissipation of charge makes it difficult to adsorb particulate matter, further reducing the effectiveness of electrostatic dust removal. Therefore, the purification efficiency of electrostatic precipitators decreases with increasing relative humidity, while reducing relative humidity ensures optimal purification efficiency. The air purification device of this invention, by incorporating a humidity control device to reduce the humidity of the air entering the electrostatic precipitator, ensures sufficient static electricity generation, and the slower dissipation of charge facilitates the adsorption of particulate matter, thereby improving the dust removal effect of the electrostatic precipitator.

[0010] For air purifiers with filters, when relative humidity increases, some PM2.5 particles agglomerate and settle. Furthermore, the agglomeration increases the particle size, thus increasing resistance as they pass through the filter and resulting in more particles being trapped. Therefore, installing a humidity control device to increase the humidity of the air entering the filter can improve the purification performance of the air purifier.

[0011] When the humidity control device simultaneously adjusts the humidity of the air entering the electrostatic precipitator and the filter, both devices operate at optimal humidity levels, effectively improving the dust removal and purification efficiency of the air purification equipment and fully leveraging its purification performance.

[0012] In one optional embodiment, the humidity regulating device includes:

[0013] The moisture absorption module is suitable for adsorbing moisture in the air and reducing the humidity of the air entering the electrostatic dust removal device.

[0014] The humidification module is adapted to release water vapor to increase the humidity of the air entering the filter device.

[0015] Beneficial effects: The humidity of the air entering the electrostatic dust removal device and the filter device can be adjusted by the moisture absorption module and the humidification module respectively. The two modules can be controlled and designed independently and can be set according to the air humidity, application scenario and needs, which makes them more flexible and applicable.

[0016] In one alternative embodiment, the moisture-absorbing module and the humidifying module constitute an adsorption assembly, and the adsorption assembly is made of a physical adsorption material.

[0017] Beneficial effects: Both the moisture absorption module and the humidification module are made of physical adsorption materials. These materials are readily available and, compared to chemical adsorption and other methods, are simple in structure and safe and reliable. The principle of physical adsorption relies on the inherent properties of the adsorption material itself, using pores and channels formed within the material to achieve physical adsorption.

[0018] In one optional embodiment, both the moisture-absorbing module and the humidifying module are adsorption layers, and the moisture-absorbing module is located upstream of the electrostatic dust removal device in the air circulation path, while the humidifying module is located between the electrostatic dust removal device and the filter device in the air circulation path.

[0019] Beneficial effects: Both the moisture absorption module and the humidification module are adsorption layers, which are laid in the air circulation path. For the moisture absorption module, it can fully absorb the water vapor in the air, and for the humidification module, it can fully and evenly release water vapor into the air. The absorption and release effects of water vapor are both good.

[0020] In one alternative embodiment, the adsorption assembly is driven by a drive mechanism adapted to rotate the adsorption assembly to swap the positions of the two adsorption layers.

[0021] Beneficial effects: By rotating the adsorption component through the drive mechanism, the positions of the two physical adsorption layers are periodically interchanged. The moisture absorption module that has absorbed moisture from the air upstream of the electrostatic precipitator is transferred to the space between the filter device and the electrostatic precipitator, releasing moisture to humidify the air entering the filter device. This effectively utilizes the moisture absorbed upstream of the purification path for humidification. The design is reasonable, and no additional humidification devices are required. It has fewer components, lower cost, and is easy to install and maintain.

[0022] In one optional embodiment, the humidity regulating device further includes a heating device adapted to heat the humidification module and release water vapor from the humidification module to humidify the air.

[0023] Beneficial effects: Adding a heating device enables the moisture in the moisture-absorbing module to evaporate quickly, and the moisture diffuses faster, thus improving heating efficiency.

[0024] In one optional embodiment, a first humidity sensor is provided between the humidity regulating device and the filter device.

[0025] Beneficial effects: The first humidity sensor detects the humidity of the air entering the filter device, determines whether the air humidity is within the optimal humidity range for the filter device to purify, and then adjusts the heating temperature of the heating device to bring the air humidity into this optimal humidity range, so as to give full play to the dust removal and purification effect of the filter device and improve the overall performance of the air purification equipment.

[0026] In one alternative implementation, the drive mechanism is a rotary motor.

[0027] Beneficial effects: The adsorption component is driven by a rotary motor, which is easy to control and allows for quick switching of the adsorption layer between the moisture absorption module and the humidification module.

[0028] In one alternative embodiment, the adsorption component is made of one or more materials selected from zeolite, activated carbon, silica gel, activated alumina, molecular sieve, glass fiber, metal oxide, or porous carbon material.

[0029] Beneficial effects: Zeolite, activated carbon, silica gel, activated alumina, molecular sieve, glass fiber, metal oxide and porous carbon materials are all materials with large specific surface area and are filled with pores and channels. The above materials are all suitable as adsorption materials, with good water vapor adsorption performance and easy release of the water vapor they have absorbed, making them suitable as the humidity regulating medium of the present invention.

[0030] In one optional embodiment, the filter device is located above the electrostatic dust removal device, the humidity regulating device is configured as a rotating drum that is laterally sleeved outside the electrostatic dust removal device along the airflow direction of the air purification device, the moisture absorption module is located on the upstream side wall of the rotating drum, and the humidification module is located on the downstream side wall of the rotating drum.

[0031] Beneficial effects: The filter device is located above the electrostatic precipitator. Air first passes through the electrostatic precipitator to remove larger dust and particulate matter, and then passes through the filter device to remove smaller dust and particulate matter, resulting in a reasonable layout. The humidity control device is configured as a rotating drum that extends laterally outside the electrostatic precipitator. By simply rotating the drum, the positions of the moisture absorption module and the humidification module can be easily switched, achieving moisture absorption upstream and humidification downstream in the airflow direction of the air purification equipment. This utilizes the water vapor adsorbed upstream of the electrostatic precipitator to humidify the inlet airflow of the downstream filter device.

[0032] Secondly, the present invention also provides a control method for an air purification device, the air purification device including an electrostatic dust removal device, a filter device, a humidity regulating device, a control unit, and a detection unit, the control method comprising the following steps:

[0033] The control unit receives the air humidity signal detected by the detection unit and compares it with the preset humidity value;

[0034] Based on the comparison results, the humidity control device is controlled to reduce the air humidity entering the electrostatic dust removal device and / or increase the air humidity entering the filter device.

[0035] Beneficial effects: This control method detects air humidity to determine whether the humidity of the air entering the electrostatic precipitator and / or filter is within the appropriate range for electrostatic precipitator and filter purification. Based on the determination result, the humidity adjustment device is controlled so that the electrostatic precipitator and / or filter can perform dust removal and purification under suitable humidity conditions, thereby improving purification efficiency.

[0036] Thirdly, the present invention also provides a control method for an air purification device, the air purification device comprising an electrostatic dust removal device, a filter device, a humidity regulating device, a control unit, and a detection unit, wherein the humidity regulating device comprises a drive mechanism, a heating device, and a moisture-absorbing module and a humidifying module made of a physical adsorption material; the control method comprises the following steps:

[0037] The control unit receives the air humidity signal at the inlet of the filter device detected by the detection unit and determines whether it is within the preset humidity range;

[0038] If not, adjust the heating power of the heating device or the rotation power of the drive mechanism until the air humidity value signal is within the preset humidity value range;

[0039] If so, the heating power of the heating device and the rotational power of the drive mechanism shall be maintained.

[0040] The detection unit measures the humidity of the air entering the filter device and determines whether it falls within the optimal humidity range for humidification. If the detected humidity is below a low threshold, the heating power of the heating device or the rotation power of the drive mechanism is increased to increase the amount of water vapor released by the humidification module, thus raising the humidity. Conversely, if the detected humidity is above a high threshold, the heating power of the heating device or the rotation power of the drive mechanism is reduced to decrease the amount of water vapor released by the humidification module, thereby lowering the humidity. This method effectively controls the humidity of the air entering the filter device, ensuring that both the electrostatic precipitator and the filter device can fully utilize their purification efficiency, resulting in a more ideal air purification and dust removal effect.

[0041] Fourthly, the present invention provides a control method for an air purification device, the air purification device comprising an electrostatic dust removal device, a filter device, a humidity regulating device, a control unit, and a detection unit, wherein the humidity regulating device comprises a drive mechanism, a heating device, and a moisture-absorbing module and a humidifying module made of a physical adsorption material; the control method comprises the following steps:

[0042] The control unit receives the air humidity value signal at the inlet of the electrostatic dust removal device detected by the detection unit and determines whether it is within the preset humidity value range;

[0043] If not, adjust the heating power of the heating device or the rotation power of the drive mechanism until the air humidity value signal is within the preset humidity value range;

[0044] If so, the heating power of the heating device and the rotational power of the drive mechanism shall be maintained.

[0045] The detection unit measures the humidity of the air entering the electrostatic precipitator to determine if it falls within the optimal humidity range for purification. If the detected humidity is lower than the set value, the heating power of the heating device or the rotation power of the drive mechanism is increased. This increases the amount of water vapor released by the humidification module, thereby reducing the water vapor saturation of the moisture absorption module and improving its absorption efficiency to meet the humidity requirements of the subsequent filter device. By controlling the humidity regulation device using this method, the humidity of the air entering the filter device and the humidity regulation performance of the humidification module are effectively controlled, allowing both the electrostatic precipitator and the filter device to fully utilize their purification efficiency, resulting in an ideal purification and dust removal effect for the air purification equipment. Attached Figure Description

[0046] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of an electrostatic and filtration composite air purification device according to an embodiment of the present invention;

[0048] Figure 2 This is a schematic diagram of the structure of an adsorption component according to an embodiment of the present invention;

[0049] Figure 3 This is a schematic diagram of another electrostatic and filtration composite air purification device according to an embodiment of the present invention;

[0050] Figure 4 This is a schematic diagram of the structure of a third type of electrostatic and filtration combined air purification device according to an embodiment of the present invention;

[0051] Figure 5 This is a schematic diagram of the structure of the fourth type of electrostatic and filtration composite air purification device according to an embodiment of the present invention;

[0052] Figure 6 This is a schematic diagram of a control process for an electrostatic and filtration composite air purification device according to an embodiment of the present invention;

[0053] Figure 7 This is a schematic diagram of another control process for the electrostatic and filtration composite air purification device according to an embodiment of the present invention;

[0054] Figure 8 This is a schematic diagram of another control process for the electrostatic and filtration composite air purification device according to an embodiment of the present invention.

[0055] Explanation of reference numerals in the attached figures:

[0056] 1. Electrostatic dust removal device;

[0057] 2. Heating device;

[0058] 3. First humidity sensor;

[0059] 4. Fan module;

[0060] 5. Filter screen device;

[0061] 6. Adsorption component; 61. Moisture absorption module; 62. Humidification module;

[0062] 7. Drive mechanism;

[0063] 8. Second humidity sensor. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] An electrostatic and filtration hybrid air purifier combines the advantages of electrostatic air purification and physical filtration. Air is purified by passing through an electrostatic precipitator followed by a physical filter. In related technologies, air humidity is not adjustable, and the purification efficiency of the electrostatic precipitator and the filter differs significantly at a given humidity level. The purification efficiency of the electrostatic precipitator decreases with increasing humidity, while the purification efficiency of the filter increases. Therefore, at high humidity, the purification efficiency of the electrostatic precipitator decreases, while the purification efficiency of the filter is maintained; at low humidity, the electrostatic precipitator performs well, but the purification performance of the filter is relatively poor. Thus, under certain humidity conditions, the overall purification performance of the electrostatic and filtration hybrid air purifier is limited, preventing both the electrostatic precipitator and the filter from achieving their optimal purification performance. Based on this, the present invention is proposed.

[0066] The following is combined Figures 1 to 8 The following describes embodiments of the present invention.

[0067] According to embodiments of the present invention, in one aspect, such as Figure 1 , Figure 3 and Figure 4As shown, the present invention provides an electrostatic and filtration composite air purification device, including an electrostatic dust removal device 1, a filter device 5, and a humidity regulating device. The humidity regulating device is adapted to reduce the humidity of the air entering the electrostatic dust removal device 1 and / or increase the humidity of the air entering the filter device 5, so as to improve the purification performance of the air purification device.

[0068] The humidity control device reduces the humidity of the air entering the electrostatic precipitator 1 and / or increases the humidity of the air entering the filter device 5, which can improve the purification efficiency of at least one of the electrostatic precipitator 1 and the filter device 5, creating conditions for fully utilizing the purification performance of the air purification equipment and thus improving the overall purification performance of the air purification equipment.

[0069] The humidity control device employs three humidity control methods: First, it reduces the humidity of the air entering the electrostatic precipitator 1; second, it increases the humidity entering the filter device 5; and third, it reduces the humidity of the air entering the electrostatic precipitator 1 and increases the humidity entering the filter device 5. The beneficial effects are analyzed below:

[0070] For the electrostatic precipitator 1, the difficulty of generating static electricity increases with increasing relative humidity, making the electrostatic dust removal effect less noticeable. Furthermore, when the relative humidity exceeds 50%, the rapid dissipation of charge makes it difficult to adsorb particulate matter, further hindering the electrostatic dust removal effect. Therefore, the purification efficiency of the electrostatic precipitator 1 decreases with increasing relative humidity; conversely, reducing relative humidity ensures the purification efficiency of the electrostatic precipitator 1. The air purification device of this invention, by incorporating a humidity control device to reduce the humidity of the air entering the electrostatic precipitator 1, ensures sufficient static electricity is generated, and the slow dissipation of charge facilitates the adsorption of particulate matter, thereby improving the dust removal effect of the electrostatic precipitator 1.

[0071] In air purification devices with filters, when relative humidity increases, some PM2.5 particles agglomerate and settle. Furthermore, the particle size increases after agglomeration, increasing resistance as they pass through the filter and resulting in more particles being trapped. Therefore, installing a humidity control device to increase the humidity of the air entering the filter device 5 can improve the purification performance of the air purification equipment.

[0072] When the humidity regulating device simultaneously adjusts the humidity of the air entering the electrostatic dust removal device 1 and the filter device 5, both the electrostatic dust removal device 1 and the filter device 5 operate under optimal humidity conditions, which can effectively improve the dust removal and purification efficiency of the air purification equipment and give full play to the purification performance of the air purification equipment.

[0073] It should be noted that, in specific implementation, humidity adjustment devices can be designed according to factors such as humidity, season, and region of the air purification equipment's operating environment in order to achieve the best purification effect.

[0074] In one optional embodiment, the humidity regulating device includes:

[0075] The moisture absorption module 61 is suitable for absorbing moisture in the air and reducing the humidity of the air entering the electrostatic dust removal device 1.

[0076] The humidification module 62 is suitable for releasing water vapor to increase the humidity of the air entering the filter device 5.

[0077] The humidity of the air entering the electrostatic dust removal device 1 and the filter device 5 is adjusted by the moisture absorption module 61 and the humidification module 62 respectively. The two modules can be controlled and designed independently and can be set according to the air humidity, application scenario and needs, which makes them more flexible and applicable.

[0078] In some implementations, such as Figure 3 and Figure 4 As shown, the moisture absorption module 61 and the humidification module 62 can be fixedly installed inside the air purification equipment. The moisture absorption module 61 is only used as a moisture absorption component. The absorbed water vapor can be guided to the humidification module 62 through the flow guide component for use as a humidification vapor source, or it can be directly discharged outside the equipment. The humidification module 62 is only used as a humidification component, and a small humidifier can be directly used as the humidification module 62.

[0079] In one alternative embodiment, the moisture-absorbing module 61 and the humidifying module 62 constitute the adsorption component 6, and the adsorption component 6 is made of a physical adsorption material.

[0080] Both the moisture-absorbing module 61 and the humidifying module 62 are made of physical adsorption materials. These materials are readily available and, compared to chemical adsorption and other methods, have a simpler structure and are safer and more reliable. The principle of physical adsorption relies on the inherent properties of the adsorption material itself, using pores and channels formed within the material to perform physical adsorption and release.

[0081] In one alternative implementation, such as Figure 2 As shown, both the moisture absorption module 61 and the humidification module 62 are adsorption layers. The moisture absorption module 61 is located upstream of the electrostatic dust removal device 1 in the air circulation path, and the humidification module 62 is located between the electrostatic dust removal device 1 and the filter device 5 in the air circulation path.

[0082] Both the moisture absorption module 61 and the humidification module 62 are adsorption layers. The adsorption layer is laid in the air circulation path. The moisture absorption module 61 can fully absorb the water vapor in the air, and the humidification module 62 can fully and evenly release water vapor into the air. The absorption and release effects of water vapor are both good.

[0083] In one alternative embodiment, the adsorption component 6 is driven by a drive mechanism 7, which is adapted to drive the adsorption component 6 to rotate so as to swap the positions of the two adsorption layers.

[0084] The adsorption component 6 is rotated by the drive mechanism 7, and the positions of the two physical adsorption layers are periodically interchanged. The moisture absorption module 61, which has absorbed moisture from the air upstream of the electrostatic dust removal device 1, is transferred to the space between the filter device 5 and the electrostatic dust removal device 1. The moisture is released to humidify the air entering the filter device 5. The design effectively utilizes the moisture absorbed upstream of the purification path for humidification. It is reasonable and does not require additional humidification devices. It has fewer components, lower cost, and is easy to install and maintain.

[0085] Specifically, the two adsorption layers of the adsorption component 6 are fixedly connected or integrally formed. Under the drive of the driving mechanism 7, the adsorption component 6 rotates, and the adsorption layers periodically switch between the two roles of the moisture absorption module 61 and the humidification module 62.

[0086] In one optional embodiment, the humidity regulating device further includes a heating device 2, adapted to heat the humidification module 62 and release water vapor in the humidification module 62 to humidify the air.

[0087] Adding a heating device 2 enables the water vapor in the moisture absorption module 61 to evaporate quickly, and the water vapor diffuses faster, thus improving the heating efficiency.

[0088] Specifically, in this embodiment, the heating device 2 is an electric heating element, which can be a PTC electric heater, a ceramic electric heater, or an electric heating wire heater, etc.

[0089] In one alternative embodiment, a first humidity sensor 3 is provided between the humidity regulating device and the filter device 5.

[0090] The first humidity sensor 3 is set to detect the humidity of the air entering the filter device 5, determine whether the air humidity is within the optimal humidity range for purification by the filter device 5, and then adjust the heating temperature of the heating device 2 to make the air humidity fall into this optimal humidity range, so as to give full play to the dust removal and purification efficiency of the filter device 5 and improve the overall performance of the air purification equipment.

[0091] In some other implementations, such as Figure 5 As shown, a second humidity sensor 8 is installed on the inlet side of the electrostatic precipitator 1 to detect the humidity of the air entering the electrostatic precipitator 1, thereby better monitoring the operating conditions of the equipment and optimizing the design of the air purification equipment.

[0092] In one alternative implementation, the drive mechanism 7 is a rotary motor.

[0093] A rotary motor is used to drive the adsorption component 6 to rotate, which is convenient to control and allows for quick switching of the adsorption layer between the moisture absorption module 61 and the humidification module 62.

[0094] In one alternative implementation, such as Figure 1 As shown, the filter device 5 is located above the electrostatic dust removal device 1, and the humidity adjustment device is set as a rotating drum that is horizontally sleeved outside the electrostatic dust removal device 1. Along the airflow direction of the air purification equipment, the moisture absorption module 61 is located on the upstream side wall of the rotating drum, and the humidification module 62 is located on the downstream side wall of the rotating drum.

[0095] Beneficial effects: The filter device 5 is located above the electrostatic precipitator 1. Air first passes through the electrostatic precipitator 1 to remove larger dust and particulate matter, and then passes through the filter device 5 to remove smaller dust and particulate matter, resulting in a reasonable layout. The humidity control device is set as a rotating drum that extends laterally outside the electrostatic precipitator 1. By simply rotating the drum, the positions of the moisture absorption module 61 and the humidification module 62 can be easily switched, achieving upstream moisture absorption and downstream humidification in the airflow direction of the air purification equipment. This utilizes the water vapor adsorbed upstream of the electrostatic precipitator 1 to humidify the inlet airflow of the downstream filter device 5.

[0096] In one alternative embodiment, the adsorption component 6 is made of one or more materials selected from zeolite, activated carbon, silica gel, activated alumina, molecular sieve, glass fiber, metal oxide, or porous carbon material.

[0097] Zeolite, activated carbon, silica gel, activated alumina, molecular sieve, glass fiber, metal oxide, and porous carbon materials are all materials with large specific surface areas and are filled with pores and channels. The above materials are all suitable as adsorption materials, with good water vapor adsorption performance and easy release of the water vapor they have absorbed, making them suitable as the humidity regulating medium of the present invention.

[0098] Secondly, such as Figure 6 As shown, the present invention also provides a control method for an electrostatic and filtration composite air purification device. The air purification device includes an electrostatic dust removal device 1, a filter device 5, a humidity regulating device, a control unit, and a detection unit. The control method includes the following steps:

[0099] S10. The control unit receives the air humidity signal detected by the detection unit and compares it with the preset humidity value;

[0100] S20. Based on the comparison results, control the humidity adjustment device to reduce the air humidity entering the electrostatic dust removal device 1 and / or increase the air humidity entering the filter device 5.

[0101] The control method of the air purification device of the present invention detects the air humidity and determines whether the air humidity entering the electrostatic dust removal device 1 and / or the filter device 5 is within the suitable humidity for electrostatic dust removal and filter purification. Then, based on the determination result, the humidity adjustment device is controlled so that the electrostatic dust removal device 1 and / or the filter device 5 can both perform dust removal and purification under suitable humidity conditions, thereby improving the purification efficiency.

[0102] Specifically, the detection unit includes a first humidity sensor 3 and a second humidity sensor 8.

[0103] Thirdly, such as Figure 7 As shown, the present invention also provides a control method for an air purification device. The air purification device includes an electrostatic dust removal device 1, a filter device 5, a humidity regulating device, a control unit, and a detection unit. The humidity regulating device includes a drive mechanism 7, a heating device 2, and a moisture-absorbing module 61 and a humidifying module 62 made of physical adsorption material. The control method includes the following steps:

[0104] S100: The control unit receives the air humidity value signal at the inlet of the filter device 5 detected by the detection unit and determines whether it is within the preset humidity value range.

[0105] S200. If not, adjust the heating temperature of heating device 2.

[0106] The first humidity sensor 3 of the detection unit detects the humidity value of the air entering the filter device 5 and determines whether it is within the optimal purification humidity range of the filter device 5. If the detected humidity value is lower than the low threshold, the heating temperature of the heating device 2 is increased, increasing the amount of water vapor released by the humidification module 62 and increasing the humidity. If the detected humidity value is higher than the high threshold, the heating temperature of the heating device 2 is decreased, reducing the amount of water vapor released by the humidification module 62 and decreasing the humidity. By using this method to control the humidity adjustment device, the humidity of the air entering the filter device 5 is effectively controlled, allowing both the electrostatic dust removal device 1 and the filter device 5 to fully utilize their purification efficiency, and enabling the air purification equipment to achieve a more ideal purification and dust removal effect.

[0107] In an optional embodiment, the present invention also provides a control method for an air purification device. The air purification device includes an electrostatic dust removal device 1, a filter device 5, a humidity regulating device, a control unit, and a detection unit. The humidity regulating device includes a drive mechanism 7, a heating device 2, and a moisture-absorbing module 61 and a humidifying module 62 made of physical adsorption material. The control method includes the following steps:

[0108] S100: The control unit receives the air humidity value signal at the inlet of the filter device 5 detected by the detection unit and determines whether it is within the preset humidity value range.

[0109] S200. If not, adjust the heating power of the heating device 2 or the rotation power of the drive mechanism 7 until the air humidity value signal is within the preset humidity value range.

[0110] S300, if so, then maintain the heating power of the heating device 2 and the rotation power of the drive mechanism 7.

[0111] The detection unit detects the humidity of the air entering the filter device 5 and determines whether it is within the optimal humidity range for purification. If the detected humidity value is lower than the low threshold, the heating power of the heating device 2 or the rotation power of the drive mechanism 7 is increased, thereby increasing the amount of water vapor released by the humidification module 62 and increasing the humidity. If the detected humidity value is higher than the high threshold, the heating power of the heating device 2 or the rotation power of the drive mechanism 7 is reduced, thereby reducing the amount of water vapor released by the humidification module 62 and decreasing the humidity. By using this method to control the humidity regulating device, the humidity of the air entering the filter device 5 is effectively controlled, allowing both the electrostatic dust removal device 1 and the filter device 5 to fully utilize their purification efficiency, and enabling the air purification equipment to achieve a more ideal purification and dust removal effect.

[0112] Fourthly, the present invention provides a control method for an air purification device, the air purification device including an electrostatic dust removal device 1, a filter device 5, a humidity regulating device, a control unit, and a detection unit, the humidity regulating device including a drive mechanism 7, a heating device 2, and a moisture-absorbing module 61 and a humidifying module 62 made of physical adsorption material; the control method includes the following steps:

[0113] S101. The control unit receives the air humidity value signal at the inlet of the electrostatic dust removal device 1 detected by the detection unit and determines whether it is within the preset humidity value range.

[0114] S102. If not, adjust the heating power of the heating device 2 or the rotation power of the drive mechanism 7 until the air humidity value signal is within the preset humidity value range.

[0115] S103. If so, maintain the heating power of the heating device 2 and the rotation power of the drive mechanism 7.

[0116] The detection unit detects the humidity of the air entering the electrostatic precipitator 1 and determines whether it is within the optimal humidity range for purification. If the detected humidity value is lower than the set humidity value, the heating power of the heating device 2 or the rotation power of the drive mechanism 7 is increased, thereby increasing the amount of water vapor released by the humidification module 62. This reduces the water vapor saturation of the moisture absorption module 61 and improves the moisture absorption efficiency to meet the humidity requirements of the subsequent filter device 5. By using this method to control the humidity regulating device, the humidity of the air entering the filter device 5 and the humidity regulating performance of the humidification module 62 are effectively controlled, so that both the electrostatic precipitator 1 and the filter device 5 can fully exert their purification efficiency, and the air purification equipment can achieve a more ideal purification and dust removal effect.

[0117] like Figure 8 As shown, in one optional implementation, the air purification process of the air purification device includes:

[0118] S1. Air purification equipment starts;

[0119] S2, Fan module 4 starts;

[0120] S3. The rotary motor rotates according to the set value, driving the humidity regulating device to rotate;

[0121] S4. The electric heating element heats at the initially set temperature;

[0122] S5. The first humidity sensor 3 detects the humidity of the air entering the filter device 5 and determines whether the air humidity is within the preset value range.

[0123] S6. If not, increase / decrease the temperature of the electric heating element;

[0124] S7. If so, continue to purify the air.

[0125] The electrostatic precipitator 1 is located upstream of the filter device 5. After the air purification equipment and fan module 4 are started, the air to be purified flows through the adsorption layer near the air inlet for dehumidification, then through the electrostatic precipitator 1 for primary purification, through the space between another adsorption layer and the filter device 5 for humidification, and finally through the filter device 5 for secondary purification before being discharged from the air outlet. During this process, the drive mechanism 7 drives the adsorption component 6 to rotate, adjusting the humidity of the air entering the electrostatic precipitator 1 and the filter device 5; the first humidity sensor 3 detects the humidity value of the air before entering the filter device 5 and compares it with a preset value to adjust the heating device 2. If the humidity is less than the preset value range, the temperature of the electric heating element is increased, and more water vapor is evaporated and released from the adsorption layer near the filter device 5; if the humidity is greater than the preset value range, the temperature of the heating element is decreased, reducing the evaporation of the adsorption layer.

[0126] This invention relates to an electrostatic and filtration composite air purification device. The fan module 4 provides the power to draw air into the air purifier for purification, and then delivers the purified air out. The fan module 4 is positioned near the air outlet of the air purifier. This proximity ensures that the filter device 5 and the electrostatic dust removal device 1 are located at the air inlet of the air purifier. Since the airflow at the inlet is more uniform than at the outlet, it maximizes the purification efficiency of the electrostatic dust removal device 1 and the filter device 5. The fan module 4 mainly consists of an impeller and an air duct, and can be centrifugal, axial, or mixed-flow type, creating a pressure difference to power airflow. The filter device 5 uses a HEPA filter or a filter with added catalyst for air purification, primarily through physical adsorption or catalytic decomposition. The electrostatic dust removal device 1 uses high-voltage electrostatics to generate plasma, destroying bacterial cell walls and viral proteins. Dust particles and bacteria are charged and deposited on the electrode plates for collection. The purification performance of electrostatic dust removal device 1 and filter device 5, two different purification methods, varies significantly under different humidity conditions. For filter device 5, the purification efficiency increases with increasing relative humidity within a range of 35% to 60%; however, for electrostatic dust removal, the purification efficiency decreases with increasing relative humidity. This prevents the combined electrostatic and filter air purifier from achieving its maximum purification efficiency, hindering further improvements in purification performance.

[0127] The humidity regulating device, drive mechanism 7, and heating device 2 of this invention are key features in solving the problem that air purification efficiency cannot be improved due to humidity. The humidity regulating device is a rotatable device, and the rotating part is equipped with an adsorption component 6 made of materials such as zeolite. The physical adsorption material has a honeycomb, circular, or other air-permeable surface shape. In this embodiment, zeolite is used. After the moisture in the air to be purified is absorbed by the lower zeolite, the humidity is reduced. The dried air enters the electrostatic precipitator 1 for processing. After passing through the electrostatic precipitator module, the air passes through the upper zeolite. The electric heating tube heats the upper zeolite, and the moisture is evaporated and released, so that the air with relatively high humidity enters the filter device 5 for purification. The humidity regulating device operates continuously, and the moisture absorbed by the zeolite from the lower part is released at the upper part. This is because humidity has different effects on the two different purification methods: filtration purification and electrostatic precipitator. In related technologies, the humidity is not adjusted after the air to be purified enters the air purifier, and the two different purification methods are carried out under a certain humidity. This invention sets up a humidity regulating device, so that the electrostatic precipitator 1 and the filter device 5 all work in the optimal state, improving the purification efficiency. At the same time, a humidity sensor is installed to detect the humidity status and adjust and control the humidity regulating device.

[0128] As can be seen, the present invention adds a humidity regulating device to the air purification equipment, and uses a material suitable for physical absorption and release of water vapor as the adsorption component 6 of the humidity regulating device to regulate the humidity of the air entering the electrostatic dust removal device 1 and the filter device 5, so that the air humidity in both purification devices is within the optimal working humidity range, and the purification and dust removal efficiency of the electrostatic dust removal device 1 and the filter device 5 is fully utilized.

[0129] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An air purification device, characterized in that, It includes an electrostatic dust removal device (1), a filter device (5) and a humidity control device, wherein the humidity control device is adapted to reduce the humidity of the air entering the electrostatic dust removal device (1) and / or increase the humidity of the air entering the filter device (5); The humidity regulating device includes: The moisture absorption module (61) is suitable for adsorbing water vapor in the air and reducing the humidity of the air entering the electrostatic dust removal device (1); The humidification module (62) is adapted to release water vapor and increase the humidity of the air entering the filter device (5); the moisture absorption module (61) and the humidification module (62) constitute the adsorption component (6). Both the moisture-absorbing module (61) and the humidifying module (62) are adsorption layers. The moisture-absorbing module (61) is located upstream of the electrostatic dust removal device (1) on the air circulation path, and the humidifying module (62) is located between the electrostatic dust removal device (1) and the filter device (5) on the air circulation path. The adsorption component (6) is connected to a drive mechanism (7) which is adapted to drive the adsorption component (6) to rotate so as to swap the positions of the two adsorption layers.

2. The air purification device according to claim 1, characterized in that, The adsorption component (6) is made of a physical adsorption material.

3. The air purification device according to claim 1, characterized in that, The humidity regulating device also includes a heating device (2), which is adapted to heat the humidification module (62) and release water vapor in the humidification module (62) to humidify the air.

4. The air purification device according to claim 3, characterized in that, A first humidity sensor (3) is provided between the humidity regulating device and the filter device (5).

5. The air purification device according to claim 1, characterized in that, The drive mechanism (7) is a rotary motor.

6. The air purification device according to claim 2, characterized in that, The adsorption component (6) is made of one or more of the following materials: zeolite, activated carbon, silica gel, activated alumina, molecular sieve, glass fiber, metal oxide, or porous carbon material.

7. The air purification device according to any one of claims 1 to 6, characterized in that, The filter device (5) is located above the electrostatic dust removal device (1). The humidity adjustment device is configured as a rotating drum that is horizontally sleeved outside the electrostatic dust removal device (1). Along the airflow direction of the air purification device, the moisture absorption module (61) is located on the upstream side wall of the rotating drum, and the humidification module (62) is located on the downstream side wall of the rotating drum.

8. A control method for an air purification device according to any one of claims 1 to 7, characterized in that, The air purification equipment includes an electrostatic dust removal device (1), a filter device (5), a humidity control device, a control unit, and a detection unit. The control method includes the following steps: The control unit receives the air humidity signal detected by the detection unit and compares it with the preset humidity value; Based on the comparison results, the humidity adjustment device is controlled to reduce the air humidity entering the electrostatic dust removal device (1) and / or increase the air humidity entering the filter device (5).

9. A control method for an air purification device according to any one of claims 1 to 7, characterized in that, The air purification equipment includes an electrostatic dust removal device (1), a filter device (5), a humidity regulating device, a control unit, and a detection unit. The humidity regulating device includes a drive mechanism (7), a heating device (2), and a moisture-absorbing module (61) and a humidifying module (62) made of physical adsorption material. The control method includes the following steps: The control unit receives the air humidity value signal at the inlet of the filter device (5) detected by the detection unit and determines whether it is within the preset humidity value range; If not, adjust the heating power of the heating device (2) or the rotation power of the drive mechanism (7) until the air humidity value signal is within the preset humidity value range; If so, the heating power of the heating device (2) and the rotation power of the drive mechanism (7) are maintained.

10. A control method for an air purification device according to any one of claims 1 to 7, characterized in that, The air purification equipment includes an electrostatic dust removal device (1), a filter device (5), a humidity regulating device, a control unit, and a detection unit. The humidity regulating device includes a drive mechanism (7), a heating device (2), and a moisture-absorbing module (61) and a humidifying module (62) made of physical adsorption material. The control method includes the following steps: The control unit receives the air humidity value signal at the inlet of the electrostatic dust removal device (1) detected by the detection unit and determines whether it is within the preset humidity value range; If not, adjust the heating power of the heating device (2) or the rotation power of the drive mechanism (7) until the air humidity value signal is within the preset humidity value range; If so, the heating power of the heating device (2) and the rotation power of the drive mechanism (7) are maintained.

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