Electrostatic screen and device with air purification function

Abstract

The present disclosure relates to an electrostatic screen and an air purification device, the electrostatic screen comprising a filter core support and a filter core, the filter core support comprising an integrated part and a main plate accommodated in the integrated part, the integrated part being provided with a first inlet for air to enter and an outlet for air to exit, and a first airflow channel being formed inside the integrated part, the first airflow channel being configured to make the air introduced from the first inlet exchange heat with the main plate and then exit the integrated part from the outlet, the outlet being adapted to communicate with an air inlet of the air purification device. Through the above technical solution, the driving force for conveying the air to exchange heat with the main plate can be directly generated by the fan inside the device, so that more heat can be taken away, the heat dissipation effect is better, and the air after exchanging heat with the main plate can re-enter the device to participate in air conditioning circulation, without adversely affecting the ambient temperature.

Description

Technical Field

[0001] This disclosure relates to the field of air purification technology, and more particularly to an electrostatic filter and an air purification device equipped with the electrostatic filter. Background Technology

[0002] As living standards continue to improve, people are paying more and more attention to air quality in their living environments. For example, electrostatic filters are installed in air-purifying devices such as air conditioners to purify the air while regulating room temperature. To achieve the various functions of electrostatic filters, such as controlling the filter assembly to be charged to attract dust, a control board is required. The control board generates heat during operation; poor heat dissipation will affect the function of the electrostatic filter. In some related technologies, heat is radiated to the external environment only through holes, resulting in poor heat dissipation. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides an electrostatic filter and a device with air purification function.

[0004] According to a first aspect of the present disclosure, an electrostatic filter is provided, including a filter element support and a filter element. The filter element support includes an integrated portion and a main board housed within the integrated portion. The integrated portion is provided with a first inlet for air to enter and an outlet for air to exit. A first airflow channel is formed inside the integrated portion. The first airflow channel is configured such that air introduced from the first inlet exchanges heat with the main board and is then discharged from the integrated portion through the outlet. The outlet is adapted to communicate with the air inlet of a device having an air purification function.

[0005] Optionally, the integrated part is provided with a sloping surface, and the first inlet is a plurality of heat dissipation holes arrayed on the sloping surface.

[0006] Optionally, a primary filter is provided at the first inlet.

[0007] Optionally, the electrostatic filter further includes a dust sensor housed within the integrated section. The integrated section is provided with a second inlet for air to enter, and a second airflow channel is formed inside the integrated section. The second airflow channel is configured such that air introduced from the second inlet passes through the monitoring element of the dust sensor and exits from the integrated section through the outlet.

[0008] Optionally, the dust sensor has a through hole that connects the second inlet and the outlet respectively. The monitoring element of the dust sensor is disposed in the through hole. The inner wall surface of the integrated part protrudes to form an annular abutment portion corresponding to the position of the second inlet. The annular abutment portion seals against the end face of the dust sensor to form an air guide cavity. The air guide cavity is connected to the second inlet and the through hole respectively.

[0009] Optionally, the integrated part includes a detachably connected upper housing and a lower housing, the upper housing being fastened to the lower housing to form an accommodating space.

[0010] Optionally, the lower housing includes a first mounting slot for mounting the motherboard and a second mounting slot for mounting the dust sensor. The first mounting slot and the second mounting slot are stepped, with the first mounting slot positioned higher than the second mounting slot. The second mounting slot is adapted to cover part of the air inlet, and the outlet is located on the second mounting slot.

[0011] Optionally, the accommodating space includes a first cavity formed by the upper housing and the first mounting groove and a second cavity formed by the upper housing and the second mounting groove, wherein the first cavity and the second cavity are isolated from each other and are respectively connected to the outlet.

[0012] The filter element is detachably mounted on the filter element support, which includes a grid plate and an L-shaped base. The grid plate supports the filter element. The L-shaped base includes an integration portion disposed at the end of the grid plate and a mounting portion disposed on the side of the grid plate. The mounting portion is provided with a plurality of negative ion generators at intervals along the extending direction. The negative ion generators are positioned above the upper surface of the filter element.

[0013] The bearing surface of the grid plate and the L-shaped inner wall of the base form a recessed installation space, and the filter element is recessed into the installation space.

[0014] According to a second aspect of the present disclosure, a device with an air purification function is provided, including a device body and an electrostatic filter according to any one of the above, wherein the device body is provided with an air inlet and a fan for introducing air into the device body through the air inlet, and the outlet of the electrostatic filter is connected to the air inlet.

[0015] Optionally, the middle frame of the main body of the device includes an installation platform and a recessed groove that is recessed inward relative to the installation platform, and the air inlet is disposed in the recessed groove; the filter element support includes the integrated part and a grid plate for supporting the filter element, the grid plate is recessed in the recessed groove, and the integrated part is at least partially erected on the installation platform.

[0016] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: This disclosure forms a first airflow channel in the integrated part of the electrostatic filter. The first airflow channel is configured to allow air introduced from the first inlet to exchange heat with the motherboard and then be discharged from the integrated part through the outlet. The outlet of the integrated part is suitable to be connected to the air inlet of a device with air purification function. In this way, the fan inside the device can be used to generate the driving force to deliver air to exchange heat with the motherboard. Compared with the heat dissipation method of related technologies that only radiates heat to the external environment through holes, this disclosure's method of actively allowing air to enter the integrated part and exchange heat with the motherboard can remove more heat and has a better heat dissipation effect. Moreover, the air that has exchanged heat with the motherboard can re-enter the device to participate in the air conditioning cycle. After the air is circulated through the air conditioning cycle and then discharged from the device, it will not have an adverse effect on the ambient temperature.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0019] Figure 1 This is a partially enlarged view of an electrostatic filter according to an exemplary embodiment.

[0020] Figure 2 yes Figure 1 A magnified cross-sectional view of the electrostatic filter.

[0021] Figure 3 This is an exploded and enlarged view of the integrated section according to an exemplary embodiment.

[0022] Figure 4 This is a schematic diagram illustrating a device with an air purification function according to an exemplary embodiment.

[0023] Figure 5 yes Figure 4 A cross-sectional view of a device with air purification function.

[0024] Figure 6 yes Figure 4 An exploded view of a device with air purification function.

[0025] Explanation of reference numerals in the attached figures

[0026] 100-Electrostatic filter, 1-Filter element support, 11-Base, 111-Integration unit, 1111-Upper housing, 11111-First inlet, 11112-Inverted slope, 11113-Second inlet, 11114-Annular abutment part, 1112-Lower housing, 11121-First mounting groove, 11122-Second mounting groove, 11123-Outlet, 11124-Partition plate, 1113-First cavity, 1114-Second cavity, 112-Mounting part, 12-Grid plate, 13-Mounting space, 2-Main board, 3-Dust sensor, 31-Through hole, 4-Filter element, 5-Negative ion generator, 6-High voltage transformer, 200-Equipment body, 210-Middle frame, 211-Mounting platform, 212-Settling tank, 220-Air inlet, 230-Evaporator, 240-Fan. Detailed Implementation

[0027] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0028] Unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" are defined according to the directions indicated in the corresponding drawings, while "inner" and "outer" refer to the inner and outer contours of the corresponding component itself. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not imply sequentiality or importance.

[0029] It should be noted that all actions involving the acquisition of signals, information, or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where the application is located, and with the authorization granted by the owner of the relevant device.

[0030] like Figures 1 to 5 As shown, this disclosure provides an electrostatic filter 100 applicable to devices with air purification functions. These devices include, but are not limited to, air conditioners, air purifiers, and air conditioning fans, which primarily achieve air purification through the filter element 4 or the combination of the filter element 4 and the negative ion generator 5. Taking an air conditioner equipped with the electrostatic filter 100 as an example, under the action of the internal fan 240, air is introduced into the air conditioner through the filter element 4 and then participates in the air conditioning circulation.

[0031] Specifically, the electrostatic filter 100 of this disclosure includes an integrated section 111 and a main board 2 housed within the integrated section 111. The integrated section 111 is provided with a first inlet 11111 for air entry and an outlet 11123 for air exit, and a first airflow channel is formed inside the integrated section 111. Figure 2 The solid arrow in the middle indicates the airflow direction. The first airflow channel is configured such that the air introduced from the first inlet 11111 exchanges heat with the motherboard 2 and then exits from the integrated section 111 through the outlet 11123. The outlet 11123 is adapted to connect with the air inlet 220 of a device with an air purification function. Here, heat exchange refers to using lower-temperature air to remove the higher-temperature heat generated by the motherboard 2.

[0032] When the device is operating, its internal fan 240 starts, drawing ambient air through the filter element 4 and into the device via the air inlet 220. Simultaneously, some air enters the integrated section 111 from the first inlet 11111, exchanges heat with the mainboard 2, and removes heat from its surface. The air then exits the integrated section 111 from the outlet 11123 and re-enters the device via the air inlet 220. Because the outlet 11123 is connected to the air inlet 220, the internal fan 240 can directly generate the driving force to deliver air to the mainboard 2 for heat exchange. Compared to related technologies that rely solely on radiating heat to the external environment through holes, this disclosure actively draws cooler air to the mainboard 2, removing more heat.

[0033] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: This disclosure forms a first airflow channel in the integrated part 111 of the electrostatic filter 100. The first airflow channel is configured such that the air introduced from the first inlet 11111 exchanges heat with the main board 2 and is then discharged from the integrated part 111 through the outlet 11123. The outlet of the integrated part 111 is adapted to be connected to the air inlet 220 of the device with air purification function. In this way, the fan 240 inside the device can be used to generate the driving force to transport the air to exchange heat with the main board 2. Compared with the heat dissipation method of related technologies that only radiates heat to the external environment through holes, this disclosure's method of actively allowing air to enter the integrated part 111 and exchange heat with the main board 2 can remove more heat and has a better heat dissipation effect. Moreover, the air after exchanging heat with the main board 2 can re-enter the device to participate in the air conditioning cycle. The air that has passed through the air conditioning cycle will not have an adverse effect on the ambient temperature after being discharged from the device.

[0034] In some implementations, such as Figure 1 and Figure 2As shown, the integrated section 111 is provided with a beveled surface 11112, and the first inlet 11111 consists of multiple heat dissipation holes arrayed on the beveled surface 11112. The beveled surface 11112 can be formed simultaneously with the integrated section 111, for example, by stamping, which can be achieved by changing the design of the stamping die. Compared to the solution of directly opening the heat dissipation holes on the flat surface of the integrated section 111, the beveled surface 11112 is less prone to dust accumulation, and can minimize the adverse impact on the heat dissipation capacity of the motherboard 2 due to blockage of the heat dissipation holes.

[0035] Furthermore, a pre-filter can be placed at the first inlet 11111. The pre-filter is suitable for the initial filtration of air purification equipment. Generally speaking, it is mainly used to filter dust particles with a diameter of 5 micrometers or larger. In this way, by filtering out larger dust particles, the quality of the air entering the equipment can be initially improved.

[0036] In some embodiments, the electrostatic filter 100 further includes a dust sensor 3 housed within the integration section 111. The dust sensor 3 may be a PM 2.5 sensor. The integration section 111 is provided with a second inlet 11113 for air to enter, and a second airflow channel is formed inside the integration section 111. Figure 2 The dashed arrow in the middle indicates the direction of airflow. The second airflow channel is configured such that air introduced from the second inlet 11113 passes through the monitoring element of the dust sensor 3 and is then discharged from the integrated unit 111 through the outlet 11123. The outlet 11123 is adapted to communicate with the air inlet 220 of the device with air purification function.

[0037] When the equipment is operating, its internal fan 240 starts, drawing in ambient air filtered through filter 4 and introduced into the equipment through inlet 220. Simultaneously, a portion of the air enters the integrated unit 111 through the second inlet 11113, where the dust sensor 3 monitors the concentration of particulate matter. The air is then exited from the integrated unit 111 through outlet 11123 and re-enters the equipment through inlet 220. Because outlet 11123 is connected to inlet 220, the driving force for air transport within the second airflow channel can be directly derived from the internal fan 240, eliminating the need for an additional small fan for the dust sensor 3 as required in related technologies. Furthermore, the monitored air can re-enter the equipment to participate in the air conditioning cycle, thus reducing manufacturing costs and saving energy. Additionally, the formation of the second airflow channel allows air to flow directly through the dust sensor 3, improving its monitoring accuracy.

[0038] In other implementations, such as Figure 2As shown, the dust sensor 3 has a through hole 31 that connects the second inlet 11113 and the outlet 11123 respectively. The monitoring element of the dust sensor 3 is disposed in the through hole 31. At this time, the through hole 31 of the dust sensor 3 is used as part of the second airflow channel. The inner wall surface of the integrated part 111 protrudes to form an annular abutment part 11114 corresponding to the position of the second inlet 11113. The annular abutment part 11114 seals against the end face of the dust sensor 3 to form an air guide cavity, which is connected to the second inlet 11113 and the through hole 31 respectively. The air guide cavity formed by the annular abutment part 11114 allows the air introduced from the second inlet 11113 to converge in the air guide cavity and then enter the through hole 31, without diffusing into the interior of the entire integrated part 111. On the one hand, this improves the efficiency of air delivery, and on the other hand, it allows the introduced air to directly enter the through hole 31 to further improve the accuracy of monitoring.

[0039] like Figure 3 As shown, the integrated unit 111 may include a detachably connected upper housing 1111 and a lower housing 1112. The upper housing 1111 is fastened to the lower housing 1112 to form an accommodating space, in which electronic components such as the motherboard 2, the dust sensor 3, and the high-voltage transformer 6 can be accommodated. By configuring the integrated unit 111 to include the detachably connected upper housing 1111 and lower housing 1112, these electronic components can be easily disassembled and assembled for maintenance and replacement.

[0040] In some implementations, reference continues. Figure 3 The lower housing 1112 includes at least a first mounting slot 11121 for mounting the motherboard 2 and a second mounting slot 11122 for mounting the dust sensor 3. The first mounting slot 11121 and the second mounting slot 11122 are stepped, with the first mounting slot 11121 positioned higher than the second mounting slot 11122. The second mounting slot 11122 is adapted to cover part of the air inlet 220, and the outlet 11123 is located on the second mounting slot 11122. This lower housing 1112 can be adapted to... Figure 5The main body 200 of the equipment has a mounting platform 211 and a recessed groove 212 that is recessed inward relative to the mounting platform 211. The air inlet 220 is disposed in the recessed groove 212. In this way, when installing the electrostatic filter 100, the second mounting slot 11122 can be placed in the recessed groove 212, and since the outlet 11123 is located on the second mounting slot 11122, it is convenient to directly guide air from the outlet 11123 to the air inlet 220 of the equipment, and then enter the equipment to participate in the air conditioning circulation. Because the first mounting slot 11121 is positioned higher than the second mounting slot 11122, it can be supported on the mounting platform 211 of the main body 200. In this way, on the one hand, the air intake efficiency can be avoided by the first mounting slot 11121 blocking the air inlet 220. On the other hand, the first mounting slot 11121 and the second mounting slot 11122 are set in a stepped shape, so that the electrostatic filter 100 can be limited in the horizontal direction by utilizing the cooperation between the stepped structure and the sink 212.

[0041] Furthermore, such as Figure 2 As shown, the accommodating space formed by the upper housing 1111 and the lower housing 1112 includes: a first cavity 1113 enclosed by the upper housing 1111 and the first mounting groove 11121, and a second cavity 1114 enclosed by the upper housing 1111 and the second mounting groove 11122. The first cavity 1113 and the second cavity 1114 are isolated from each other and are respectively connected to the outlet 11123. For example, after the upper housing 1111 and the lower housing 1112 are fastened together, a partition 11124 is formed between the first cavity 1113 and the second cavity 1114. By forming the first cavity 1113 and the second cavity 1114, which are isolated from each other, the electronic components contained in the different cavities will not interfere with each other. For example, the heat generated by the motherboard 2 during operation is prevented from being quickly conducted to the dust sensor 3 and interfering with the normal use of the dust sensor 3.

[0042] In some implementations, such as Figures 4 to 6As shown, the filter element 4 is detachably mounted on the filter element support 1. The filter element support 1 includes a grid plate 12 and an L-shaped base 11. The grid plate 12 supports the filter element 4. The grid plate 12 is rectangular, or it can be elliptical or rectangular. The rectangular shape can be a rectangle with small rounded corners around the edges and large rounded corners at both ends, or any other conventional shape. The L-shaped base 11 includes an integrated portion 111 at the end of the grid plate 12 and a mounting portion 112 on the side of the grid plate 12. The mounting portion 112 has multiple negative ion generators 5 spaced apart along its extension direction. The negative ion generators 5 are positioned above the upper surface of the filter element 4. Furthermore, a recessed mounting space 13 is formed between the bearing surface of the grid plate 12 and the L-shaped inner wall of the base 11. The filter element 4 is recessed into the mounting space 13. In this way, the L-shaped inner wall of the base 11 can limit the filter element 4 in the horizontal direction, facilitating installation and positioning.

[0043] The filter element 4 can be disassembled separately from the filter element support 1, allowing it to be reused after cleaning, which helps save on operating costs. Furthermore, since the negative ion generator 5 is mounted on the filter element support 1, specifically on the mounting part 112, cleaning or maintaining the filter element 4 will not affect the negative ion generator 5. This eliminates the tedious process of removing the negative ion generator 5 when cleaning the filter element 4 and avoids the problem of damaging the negative ion generator 5 while cleaning it. Additionally, the negative ion generator 5 is positioned above the upper surface of the filter element 4. Because negative ions carry a negative charge, when they encounter dust particles in the air, the positive and negative charges combine, causing the dust particles to clump together. This further enhances the filtration effect of the filter element 4, achieving better air purification.

[0044] According to a second aspect of the embodiments of this disclosure, such as Figures 4 to 6 As shown, an air purification device is provided, including a device body 200 and an electrostatic filter 100. The electrostatic filter 100 is the electrostatic filter in any of the above embodiments and has all its beneficial effects, which will not be described in detail here. The device body 200 is provided with an air inlet 220 and a fan for introducing air into the device body 200 through the air inlet 220. The fan can be, for example, a cross-flow fan. The outlet 11123 of the electrostatic filter 100 is connected to the air inlet 220.

[0045] In some embodiments, the middle frame 210 of the device body 200 includes a mounting platform 211 and a recessed groove 212 recessed inward relative to the mounting platform 211, with the air inlet 220 disposed within the recessed groove 212. The filter element support 1 includes an integrated portion 111 and a grid plate 12 for supporting the filter element 4, the grid plate 12 being recessed within the recessed groove 212, and the integrated portion 111 being at least partially mounted on the mounting platform 211. For example, in some applications, the outlet 11123 of the integrated portion 111 communicates with the air inlet 220 of the device, in which case it is necessary for part of the integrated portion 111 to be mounted on the grid plate 12. In other applications, the outlet 11123 of the integrated portion 111 does not communicate with the air inlet 220 of the device. To avoid the integrated portion 111 obstructing the air inlet 220, the integrated portion 111 can be configured to be entirely placed on the mounting platform 211. In other embodiments, the device body 200 may be detachably connected to the electrostatic filter 100, for example, the device body 200 may be detachably connected to the electrostatic filter 100 via a snap-fit ​​structure.

[0046] The following example uses an air conditioner with air purification function, combined with... Figure 6 An exemplary working process of the device is described below. When the dust sensor 3 detects that the concentration of particulate matter in the air exceeds a threshold, the purification mode of the electrostatic filter 100 is activated, and the negative ion generator 5 operates to cause the particulate matter to agglomerate and be more easily adsorbed by the charged filter element 4. At the same time, since the negative ion generator 5 causes the electronic components such as the motherboard 2 and high-voltage transformer 6 inside the integrated section 111 to heat up, the air conditioner is turned on, driving the fan 240 to rotate, so that some air enters the integrated section 111 from the first inlet 11111, exchanges heat with the electronic components such as the motherboard 2, and takes away the heat from the surface of the motherboard 2. Then, the air is discharged from the integrated section 111 from the outlet 11123 and enters the interior of the device through the air inlet 220.

[0047] In the air conditioning heating mode, the hot air that has exchanged heat with the main board 2 enters the main body 200 of the equipment through the outlet 11123 of the integrated section 111. Under the action of the fan 240, it comes into contact with the hot end of the evaporator 230, which can improve the heat exchange efficiency of the air conditioner. In the air conditioning cooling mode, the hot air that has exchanged heat with the main board 2 enters the main body 200 of the equipment through the outlet 11123 of the integrated section 111. Under the action of the fan 240, it comes into contact with the cold end of the evaporator 230, which lowers the temperature of the hot air before it is discharged from the equipment.

[0048] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0049] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An electrostatic filter screen, characterized in that, The device includes a filter element holder and a filter element. The filter element holder includes an integrated part, a main board housed within the integrated part, and a dust sensor housed within the integrated part. The integrated part is provided with a first inlet for air to enter and an outlet for air to exit. A first airflow channel is formed inside the integrated part. The first airflow channel is configured such that air introduced from the first inlet exchanges heat with the main board and is then discharged from the integrated part through the outlet. The outlet is adapted to communicate with the air inlet of a device with an air purification function. The integrated unit includes a detachably connected upper housing and a lower housing. The upper housing is fastened to the lower housing to form an accommodating space. The lower housing includes a first mounting slot for mounting the motherboard and a second mounting slot for mounting the dust sensor. The first mounting slot and the second mounting slot are stepped, and the position of the first mounting slot is higher than that of the second mounting slot. The second mounting slot is adapted to cover part of the air inlet, and the outlet is located on the second mounting slot.

2. The electrostatic filter according to claim 1, characterized in that, The integrated part is provided with an inverted slope, and the first inlet is a plurality of heat dissipation holes arrayed on the inverted slope.

3. The electrostatic filter according to claim 2, characterized in that, The first inlet is covered with a primary filter.

4. The electrostatic filter according to claim 1, characterized in that, The integrated unit is provided with a second inlet for air to enter, and a second airflow channel is formed inside the integrated unit. The second airflow channel is configured such that the air introduced from the second inlet passes through the monitoring element of the dust sensor and is then discharged from the integrated unit through the outlet.

5. The electrostatic filter according to claim 4, characterized in that, The dust sensor has a through hole that connects the second inlet and the outlet respectively. The monitoring element of the dust sensor is disposed in the through hole. The inner wall surface of the integrated part protrudes to form an annular abutment part corresponding to the position of the second inlet. The annular abutment part seals against the end face of the dust sensor to form an air guide cavity. The air guide cavity is connected to the second inlet and the through hole respectively.

6. The electrostatic filter according to claim 1, characterized in that, The accommodating space includes a first cavity formed by the upper housing and the first mounting groove, and a second cavity formed by the upper housing and the second mounting groove. The first cavity and the second cavity are isolated from each other and are respectively connected to the outlet.

7. The electrostatic filter according to claim 1, characterized in that, The filter element is detachably mounted on the filter element support, which includes a grid plate and an L-shaped base. The grid plate supports the filter element. The L-shaped base includes an integration portion disposed at the end of the grid plate and a mounting portion disposed on the side of the grid plate. The mounting portion is provided with a plurality of negative ion generators at intervals along the extending direction. The negative ion generators are positioned above the upper surface of the filter element.

8. The electrostatic filter according to claim 7, characterized in that, The bearing surface of the grid plate and the L-shaped inner wall of the base form a recessed installation space, and the filter element is recessed into the installation space.

9. A device with air purification function, characterized in that, The device includes a main body and an electrostatic filter according to any one of claims 1-8. The main body is provided with an air inlet and a fan for introducing air into the interior of the main body through the air inlet, and the outlet is connected to the air inlet.

10. The device with air purification function according to claim 9, characterized in that, The main body of the equipment includes a mounting platform and a recessed groove that is recessed inward relative to the mounting platform, and the air inlet is disposed in the recessed groove; the filter element support includes the integrated part and a grid plate for supporting the filter element, the grid plate is recessed in the recessed groove, and the integrated part is at least partially erected on the mounting platform.

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