Air purifying device

Abstract

The utility model provides a kind of air purification device, comprising: basket body, with the air inlet for air to enter;Filtering part, set in basket body, along air flow direction filtering part is located downstream side of air inlet;Shielding part, set in upstream side of filtering part, to shield part of effective filtering area of filtering part;Drive part is configured to drive shielding part to move relative to filtering part, to make shielding part shield different parts of effective filtering area.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to an air purification device. Background Technology

[0002] The air purification device includes a housing and a filter unit installed in the housing. When used to purify air, outside air enters through the air inlet of the air purification device and flows out through the air outlet after passing through the filter unit, so as to provide purified air to the target space.

[0003] To improve the filtration efficiency and extend the lifespan of the filter unit, it is often equipped with a large effective filtration area. However, assuming a constant airflow through the filter unit, a large effective filtration area reduces the air velocity passing through it, thereby decreasing the air purifier's ability to adsorb surrounding impurities. Utility Model Content

[0004] In view of the above-mentioned technical problems, the present invention provides an air purification device that can improve its ability to adsorb surrounding foreign objects.

[0005] This utility model provides an air purification device, comprising: a housing having an air inlet for air to enter; a filter unit disposed in the housing and located downstream of the air inlet along the airflow direction; a shielding unit disposed upstream of the filter unit to shield a portion of the effective filtration area of ​​the filter unit; and a drive unit configured to drive the shielding unit to move relative to the filter unit so that the shielding unit shields different portions of the effective filtration area.

[0006] In some illustrative embodiments, the filter section is configured as a cylindrical structure, and the effective filtration area is formed circumferentially by the filter section; a portion of the shielding section covers the outside of the filter section.

[0007] In some illustrative embodiments, the aforementioned shielding portion includes: an annular member located above the filter portion, the inner diameter of the annular member being configured to be larger than the outer diameter of the filter portion, and the center of the annular member coinciding with the extension direction of the axis of the filter portion; and at least one shielding piece disposed on the annular member and configured to extend along the axial direction of the filter portion to the outside of the filter portion.

[0008] In some illustrative embodiments, the aforementioned shielding portion includes at least two aforementioned shielding plates, which are spaced apart circumferentially along the aforementioned annular member.

[0009] In some illustrative embodiments, the shielding portion further includes a convex ring disposed at the upper end of the annular member and extending outward along the radial direction of the convex ring. The driving portion is configured to be drively connected to the convex ring to drive the shielding portion to rotate relative to the filter portion about the axis of the filter portion, so that the shielding sheet faces different portions of the effective filtration area.

[0010] In some illustrative embodiments, the drive unit includes: a drive mechanism disposed in the housing to output torque; and a transmission mechanism configured to transmit the torque output by the drive mechanism to the shielding portion.

[0011] In some illustrative embodiments, the drive mechanism includes a motor, the transmission mechanism includes a drive gear disposed on the output shaft of the motor, and the outer edge of the shielding portion is provided with a toothed segment, which is configured to mesh with the drive gear to cause the shielding portion to rotate passively.

[0012] In some illustrative embodiments, the air purification device further includes a limiting portion disposed between the housing and the shielding portion, the limiting portion being configured to limit the offset of the shielding portion along the axial direction of the drive mechanism and / or the offset along the radial direction.

[0013] In some illustrative embodiments, the limiting part has a mounting end and a movable member. The mounting end is disposed on one of the basket and the shielding part, and the movable member is disposed on the mounting end and abuts against the other of the basket and the shielding part. The movable member is in movable contact with the basket or the shielding part.

[0014] In some illustrative embodiments, the mounting end forms a receiving groove, the movable member is rotatably disposed in the receiving groove, a portion of the movable member is disposed in the receiving groove, and another portion of the movable member is exposed outside the receiving groove and abuts against the basket or the shield.

[0015] In some illustrative embodiments, the limiting portion includes: a first axial limiting portion, wherein a first mounting end of the first axial limiting portion is disposed on the blocking portion, and a first movable member of the first axial limiting portion abuts against the first end face of the housing; the distance from the bottom of the receiving groove formed by the first mounting end to the first end face is configured to be approximately the same as the maximum diameter of the first movable member; and / or, a second axial limiting portion, wherein a second mounting end of the second axial limiting portion is disposed on the second end face of the housing, and a second movable member of the second axial limiting portion abuts against the blocking portion of the protruding ring; the distance from the bottom of the receiving groove formed by the second mounting end to the blocking portion is configured to be approximately the same as the maximum diameter of the second movable member.

[0016] In some illustrative embodiments, the limiting part further includes a radial limiting part, the third mounting end of which is disposed on the second end face of the basket, and the third movable member of which abuts against the blocking part.

[0017] In some illustrative embodiments, the third mounting end forms an opening on the side facing the shield, and a limiting plate is provided in the opening. The limiting plate is provided with a limiting hole, and the diameter of the limiting hole is configured to be greater than or equal to the maximum diameter of the third movable member, so that a portion of the third movable member is exposed to the limiting hole and abuts against the shield.

[0018] In some illustrative embodiments, the filter includes: at least three of the first axial limiting portions, which are equally spaced along the circumference of the filter portion; and / or, at least three of the second axial limiting portions, which are equally spaced along the circumference of the filter portion; and / or, at least two of the radial limiting portions, which are equally spaced along the circumference of the filter portion.

[0019] In some illustrative embodiments, the air purification device further includes a cleaning section disposed outside the filter section and configured to remove at least a portion of foreign matter from the air inlet surface of the filter section.

[0020] In some illustrative embodiments, the cleaning unit includes: a scraper configured to move between a first position where it is disengaged from the air inlet surface of the filter and a second position where one end of the scraper abuts against the air inlet surface of the filter; and an actuation mechanism configured to move the scraper between the first position and the second position according to a target operation.

[0021] In some illustrative embodiments, the scraping member has a connecting end and a scraping end facing away from each other; the connecting end is pivotally connected to the inner edge of the annular member, and the scraping end is configured to abut against or disengage from the filter section as the connecting end rotates.

[0022] In some illustrative embodiments, the actuation mechanism includes: a first strip-shaped hole disposed in the protruding ring and extending along the circumferential direction of the protruding ring; a first connecting rod, one end of which is pivotally connected to the portion of the scraper located between the connecting end and the scraping end, and the other end of which is slidably connected to the first strip-shaped hole.

[0023] In some illustrative embodiments, the actuation mechanism further includes: a second strip-shaped hole disposed on the convex ring and extending in the radial direction of the convex ring, the second strip-shaped hole being located outside the first strip-shaped hole; and a second connecting rod, one end of which is pivotally connected to the other end of the first connecting rod, and the other end of which is slidably connected to the second strip-shaped hole.

[0024] In some illustrative embodiments, the actuation mechanism further includes: a toggle member disposed in the housing and configured to contact the first link during the rotation of the blocking portion to aggle the first link along the extension direction of the first strip hole; or, a toggle member configured to contact the second link during the rotation of the blocking portion to aggle the second link along the extension direction of the second strip hole.

[0025] In some illustrative embodiments, the scraper has a first cleaning surface facing the filter section and a second cleaning surface away from the filter section. Along the extending direction of the scraper, the distance between the first cleaning surface and the second cleaning surface gradually increases from the scraping end to the connecting end.

[0026] In some illustrative embodiments, the first cleaning surface is configured as a curved surface; and / or, the second cleaning surface is configured as a curved surface.

[0027] As can be seen from the above technical solution, the air purification device of this utility model has at least the following beneficial effects:

[0028] In the aforementioned air purification device, a shielding section is positioned upstream of the filter section according to the airflow direction. This shields a portion of the filter section's effective filtration area during air purification. In other words, the shielding section allows airflow through only a portion of the filter section's effective filtration area. This increases the airflow velocity through the filter section while maintaining a constant airflow volume, thereby enhancing the air purifier's ability to adsorb surrounding impurities. Furthermore, the drive unit is adapted to move the shielding section relative to the filter section, allowing the portion of the filter section that allows airflow to be adjusted during air purification. This prevents a decrease in the filter section's utilization rate due to a portion of its effective filtration area being unusable for extended periods. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a perspective view of the air purification device provided according to the present invention;

[0031] Figure 2 yes Figure 1 A partial cross-sectional view of the housing portion of the air purification device shown;

[0032] Figure 3 yes Figure 2 A partially enlarged view of the drive unit of the air purification device shown;

[0033] Figure 4 yes Figure 2 A partially enlarged view of the drive unit of the air purification device shown from another perspective;

[0034] Figure 5 yes Figure 2 The enlarged view of the limiting part of the air purification device shown illustrates the first axial limiting part and the second axial limiting part;

[0035] Figure 6 yes Figure 2 The enlarged view of the limiting part of the air purification device shown illustrates the radial limiting part.

[0036] Figure 7 This is a partially enlarged view of another type of radial limiting part;

[0037] Figure 8 yes Figure 2 A schematic diagram showing the arrangement of the limiting part of the air purification device;

[0038] Figure 9 yes Figure 1 A partial enlarged view of the cleaning section of the air purification device shown;

[0039] Figure 10 yes Figure 9 A magnified view of the cleaning section from another perspective;

[0040] Figure 11 yes Figure 9 The diagram shows the cleaning unit's scraper in the first position during use.

[0041] Figure 12 yes Figure 9 The diagram shows the cleaning unit's scraper in the second position, indicating its usage status.

[0042] Figure Labels

[0043] 10. Basket body; 11. Air outlet; 12. First end face; 13. Second end face;

[0044] 20. Filter section; 21. Air inlet; 22. Air inlet surface; 23. Air outlet surface;

[0045] 30. Shielding part; 31. Protruding ring; 32. Annular part; 33. Shielding plate;

[0046] 40. Drive unit; 41. Motor; 42. Drive gear; 43. Output shaft;

[0047] 50. Limiting part; 51. First axial limiting part; 511. First movable part; 512. First mounting end; 52. Second axial limiting part; 521. Second movable part; 522. Second mounting end; 53. Radial limiting part; 531. Third movable part; 532. Third mounting end; 533. Limiting plate; 5331. Limiting hole;

[0048] 60. Cleaning section; 61. Scraping component; 611. Scraping end; 612. Connecting end; 613. First cleaning surface; 614. Second cleaning surface; 62. Actuation mechanism; 621. First connecting rod; 622. First slot; 623. Second connecting rod; 624. Second slot; 63. Fixed shaft; 64. Actuating component; 65. Central shaft. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0050] In the description of this utility model, it should be noted that the terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and similar expressions are for illustrative purposes only and do not represent the only possible embodiments. Furthermore, in the following description, the directional terms "upstream side" and "downstream side" are defined with reference to the direction of air flow within the heat exchange device.

[0051] Furthermore, the use of ordinal numbers such as "first" and "second" in the specification and claims to modify the corresponding elements does not itself imply or represent any ordinal number of the element, nor does it represent the order of one element with another element, or the order of manufacturing methods. The use of these ordinal numbers is only to enable a named element to be clearly distinguished from another element with the same name.

[0052] Furthermore, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] Air purifiers are widely used in homes, industries, medical facilities, and public utilities. Their main function is to improve indoor air quality and remove various pollutants that affect health. While air purifiers vary in design and function depending on the specific application, their basic structure typically includes three core parts: the housing, the air supply unit, and the filter unit. The housing serves as the support structure and has an air inlet and outlet for drawing in and expelling air. The air supply unit uses a fan and motor to drive airflow, creating a circulation system. The filter unit, located between the air inlet and outlet, is responsible for effectively filtering out fine particulate matter, harmful gases, allergens, and microorganisms from the air.

[0054] The filtration unit typically consists of filter media and an external frame, with the air inlet surface of the filter media defining the effective filtration area. A larger effective filtration area helps improve filtration efficiency and extend the lifespan of the filter media. However, under constant airflow conditions, increasing the filtration area leads to a decrease in airflow velocity through the filter media, thereby weakening the device's ability to adsorb heavier foreign objects (such as large dust particles and hair). Conversely, reducing the effective filtration area to increase airflow velocity, while enhancing adsorption capacity, reduces filtration effectiveness and shortens filter media lifespan, increasing user operating costs.

[0055] Therefore, how to extend the service life of the filter while ensuring strong adsorption capacity for large particles and avoiding a decrease in the utilization rate of the filter area has become a technical problem that urgently needs to be solved in the design of current air purification devices.

[0056] First Embodiment

[0057] Figure 1 This is a perspective view of the air purification device provided according to the present invention. Figure 2 yes Figure 1 A partial cross-sectional view of the housing portion of the air purification device shown.

[0058] This utility model provides an air purification device, such as Figure 1 and Figure 2As shown, the device includes a housing 10, a filter section 20, a shielding section 30, and a drive section 40. The housing 10 has an air inlet for air intake. The filter section 20 is disposed in the housing 10, and along the airflow direction, the filter section 20 is located downstream of the air inlet. The shielding section 30 is disposed upstream of the filter section 20 to shield a portion of the effective filtration area of ​​the filter section 20. The drive section 40 is configured to drive the shielding section 30 to move relative to the filter section 20, so that the shielding section 30 shields different portions of the effective filtration area.

[0059] In some illustrative embodiments, such as Figure 1 and Figure 2 As shown, the housing 10 defines the external shape of the air purification device and serves as the mounting base for other parts of the air purification device. The housing 10 is provided with an air inlet 21 for unpurified air to enter the air purification device and an air outlet 11 for purified air to return to the target space.

[0060] In addition to the housing 10, the air purification device also includes a filter section 20 and an air supply section, which are disposed within the installation space defined by the housing 10. According to the airflow direction, the filter section 20 is located downstream of the air inlet 21 and upstream of the air outlet 11, and mainly includes filter media and an external frame for supporting the filter media. The side of the filter media facing the air inlet 21 can be understood as the air inlet surface 22 (for air intake) of the filter section 20, which defines the effective filtration area of ​​the filter section 20, while the side of the filter media away from the air inlet 21 can be understood as the air outlet surface 23 (for air exhaust) to allow purified air to flow out. Furthermore, the air supply section mainly includes a motor and fan blades connected to the output end of the motor. When the motor runs, the fan blades rotate to create an airflow from the air inlet 21 to the air outlet 11 inside the air purification device.

[0061] Based on this, the shielding part 30 of the air purification device is disposed on the upstream side of the filter part 20, which can be understood as being on the upstream side of the air inlet surface 22. Specifically, it can be disposed between the air inlet 21 and the air inlet surface 22 of the filter part 20. It should be understood that the embodiments of this utility model are not limited thereto.

[0062] For example, the shielding part 30 can also be provided on the upstream side of the air inlet 21, or provided inside the air inlet 21.

[0063] In some illustrative embodiments, such as Figure 2As shown, the drive unit 40 is adapted to drive the shielding part 30 to move relative to the filter part 20. Depending on the structure of the filter part 20, the direction of movement of the shielding part 30 relative to the filter part 20 can be different. For example, for a filter part 20 with a curved air inlet surface 22 (which may be configured as a cylindrical structure), the shielding part 30 can rotate relative to the air inlet surface 22 with an appropriate arc under the action of the drive unit 40; while for a filter part 20 with a flat air inlet surface 22 (which may be configured as a plate structure), the shielding part 30 can translate relative to the air inlet surface 22 under the action of the drive unit 40.

[0064] In this embodiment, the shielding part 30, located upstream of the filter section 20, blocks the air inlet 21 of the housing 10 and the air inlet surface 22 of the filter section 20, thereby blocking a portion of the effective filtration area. Specifically, the portion of the filter section 20 blocked by the shielding part 30 prevents airflow, while the portion of the filter section 20 exposed outside the shielding part 30 allows airflow. This reduces the area within the effective filtration region that allows airflow, maintaining the airflow velocity entering the air purifier and thus enhancing the air purifier's ability to adsorb surrounding foreign matter.

[0065] Based on this, the drive unit 40 causes the shielding part 30 to move relative to the air inlet surface 22 of the filter unit 20, and this relative movement can be periodic. In this way, during the operation of the air purifier, the duration for which each part of the effective filtration area is exposed to the shielding part 30 is substantially the same in each cycle, thus preventing a decrease in the utilization rate of the filter unit 20 due to prolonged shielding of a certain part of the effective filtration area. The cycle of the movement of the shielding part 30 relative to the filter unit 20 can be either continuous or intermittent; that is, the movement of the shielding part 30 relative to the filter unit 20 can be continuous throughout the entire operation of the air purifier, or it can occur during certain time periods within the entire operation of the air purifier.

[0066] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the filter section 20 is configured as a cylindrical structure, and an effective filtration area is formed circumferentially around the filter section 20. A portion of the shielding section 30 covers the outside of the filter section 20.

[0067] Figure 3 yes Figure 2 A partially enlarged view of the drive unit of the air purification device shown.

[0068] According to embodiments of the present invention, such as Figure 3As shown, the shielding portion 30 includes an annular member 32 and at least one shielding plate 33. The annular member 32 is located above the filter portion 20, and the inner diameter of the annular member 32 is configured to be larger than the outer diameter of the filter portion 20, with the center of the annular member 32 coinciding with the extension direction of the axis of the filter portion 20. The shielding plate 33 is disposed on the annular member 32 and is configured to extend along the axial direction of the filter portion 20 to the outside of the filter portion 20.

[0069] In some illustrative embodiments, such as Figure 2 As shown, the filter section 20 includes, but is not limited to, a hollow cylindrical structure, specifically a cylindrical structure. More specifically, the filter media of the filter section 20 is arranged circumferentially, with its outer wall surface serving as an air inlet surface 22 and its inner wall surface serving as an air outlet surface 23. Furthermore, the filter media forms a filtration direction in the radial direction to filter at least a portion of foreign matter in the air.

[0070] Regarding the cylindrical filter section 20 described above, the annular member 32 of the shielding section 30 is disposed above the filter section 20, specifically supported on the portion of the housing 10 located above the filter section 20. More specifically, the annular member 32 may be parallel to the radial direction of the filter section 20, while the shielding plate 33 is disposed below the annular member 32 and extends along the axial direction of the filter section 20 to circumferentially shield a portion of the effective filtration area of ​​the filter section 20.

[0071] According to embodiments of the present invention, such as Figure 3 As shown, the shielding portion 30 also includes a convex ring 31. The convex ring 31 is disposed at the upper end of the annular member 32 and extends outward along the radial direction of the convex ring 31. The driving portion 40 is configured to be drively connected to the convex ring 31 to drive the shielding portion 30 to rotate relative to the filter portion 20 about the axis of the filter portion 20, so that the shielding plate 33 faces different parts of the effective filtration area.

[0072] Figure 4 yes Figure 2 A partially enlarged view of the drive unit of the air purification device shown from another perspective.

[0073] According to embodiments of the present invention, such as Figure 3 and Figure 4 As shown, the drive unit 40 includes a drive mechanism and a transmission mechanism. The drive mechanism is disposed on the housing 10 to output torque. The transmission mechanism is configured to transmit the torque output by the drive mechanism to the blocking part 30.

[0074] According to embodiments of the present invention, such as Figure 4 As shown, the drive mechanism includes a motor 41, and the transmission mechanism includes a drive gear 42 disposed on the output shaft 43 of the motor 41. The outer edge of the blocking part 30 is provided with a toothed section, which is configured to mesh with the drive gear 42 to enable the blocking part 30 to move in a driven manner.

[0075] In some illustrative embodiments, such as Figure 3 and Figure 4 As shown, the motor 41 of the drive mechanism can be mounted on the housing 10, and a drive gear 42 is provided on its output shaft 43. Further, a convex ring 31 is disposed at the upper end of the annular member 32, and extends outward along the radial direction of the annular member 32 to form a toothed ring that meshes with the drive gear 42. Thus, when the motor 41 outputs torque, the drive gear 42 rotates with the output shaft 43 of the motor 41, thereby driving the convex ring 31, and causing the convex ring 31 to drive the annular member 32 (the convex ring 31 is part of the annular member 32) and the baffle plate 33 to rotate synchronously around the axis of the filter section 20, so that the baffle plate 33 blocks different circumferential positions of the effective filtration area. The motor 41 may include, but is not limited to, a bidirectional motor 41, thereby allowing the baffle plate 30 to move relative to the filter section 20 in opposite first and second directions. For the filter section 20 configured as a cylindrical structure, the first direction can be understood as either a clockwise or counterclockwise direction, and the second direction can be understood as the other of the clockwise and counterclockwise directions. It should be understood that the embodiments of this utility model are not limited thereto.

[0076] In some other embodiments, the filter section 20 may also be configured as a plate-like structure, for example, it may include a rectangular frame and plate-like filter media disposed within the frame. Further, the shielding plate 33 of the shielding section 30 may be configured to extend along the length or width direction of the filter section 20 to cover at least a portion of the effective filtration area of ​​the filter section 20 along the length or width direction. Based on this, the drive section 40 may be configured to translate the shielding section 30 along the width or length direction, so that the shielding plate 33 shields different positions within the effective filtration area. Regarding the filter section 20 configured as a plate-like structure, the first direction can be understood as any translational direction parallel to the air inlet surface 22 of the filter section 20, and the second direction is a translational direction opposite to the first direction.

[0077] Figure 5 yes Figure 2 The enlarged view of the limiting part of the air purification device shown illustrates the first axial limiting part and the second axial limiting part. Figure 6 yes Figure 2 The enlarged view of the limiting part of the air purification device shown illustrates the radial limiting part.

[0078] According to embodiments of the present invention, such as Figure 5 and Figure 6As shown, the air purification device also includes a limiting part 50. The limiting part 50 is disposed between the housing 10 and the shielding part 30. The limiting part 50 is configured to limit the offset of the shielding part 30 in the axial direction of the drive mechanism and / or in the radial direction. The axial direction of the drive mechanism can be understood as the axial direction of the output shaft 43 of the motor 41; similarly, the radial direction of the drive mechanism can be understood as the radial direction of the output shaft 43 of the motor 41.

[0079] According to embodiments of the present invention, such as Figure 5 and Figure 6 As shown, the limiting part 50 has a mounting end and a movable part. The mounting end is disposed on one of the basket 10 and the blocking part 30, and the movable part is disposed on the mounting end and abuts against the other of the basket 10 and the blocking part 30. The movable part is in movable contact with the basket 10 or the blocking part 30. This movable contact can be understood as the movable part not being fixedly connected to the basket 10 and / or the blocking part 30. Under the action of an external force (specifically, under the driving action of the aforementioned driving part 40), the movable part can move relative to the basket 10 or the blocking part 30, such as undergoing at least one of relative rolling, relative sliding, or relative separation.

[0080] In some illustrative embodiments, such as Figure 5 and Figure 6 As shown, the shielding part 30 and the filtering part 20 can be spaced apart, and the shielding part 30 and the basket 10 can also be spaced apart. This helps to prevent excessive friction between the shielding part 30 and the basket 10 when they move relative to each other, which would make it difficult to move smoothly.

[0081] However, when a gap forms between the shielding part 30 and the basket 10, the shielding part 30 may have too much room to move relative to the basket 10. During operation of the air purifier, the shielding part 30 may vibrate or shift due to vibrations in the air supply section, potentially causing noise or damage from collisions with other components within the basket 10. Therefore, this embodiment also includes a limiting part 50. This limiting part 50 is positioned between the shielding part 30 and the basket 10, with one end contacting the basket 10 and the other end contacting the shielding part 30, and at least one end being in movable contact. When the shielding part 30 moves relative to the filter part 20, this structure effectively suppresses its displacement and vibration within the basket 10. Simultaneously, since at least one end is in movable contact, the friction between the limiting part 50 and the shielding part 30 or the basket 10 is significantly reduced, thereby achieving smooth movement of the shielding part 30 while ensuring stability.

[0082] According to embodiments of the present invention, such as Figure 5 and Figure 6As shown, the mounting end forms a receiving groove, the movable part is rotatably disposed in the receiving groove, a part of the movable part is disposed in the receiving groove, and the other part of the movable part is exposed outside the receiving groove and abuts against the basket 10 or the shielding part 30.

[0083] In some illustrative embodiments, such as Figure 5 and Figure 6 As shown, the mounting end is disposed on the housing 10 or the shielding part 30, and a receiving groove is formed inside it. The movable part is rotatably disposed in the receiving groove, and the movable part includes, but is not limited to, being configured as a polyhedron, a sphere, a cylinder, or any other rotatable body structure. For ease of explanation, the following embodiment will be described using a movable part configured as a sphere.

[0084] In some illustrative embodiments, such as Figure 5 and Figure 6 As shown, the receiving groove formed by the mounting end includes a groove bottom surface and groove side surfaces adjacent to the groove bottom surface. The portion enclosed by the groove bottom surface and multiple groove side surfaces forms a receiving space for accommodating the movable part. Furthermore, the mounting end has an opening or a through-hole 5331 formed on the side opposite to the groove bottom surface, so that at least a portion of the movable part can be exposed on the outside of the mounting end, thereby abutting against the housing 10 or the shielding part 30.

[0085] In this embodiment, when the blocking part 30 moves, due to the presence of the movable member, when the blocking part 30 deviates, it will interfere with the movable member and press the movable member in the direction opposite to the bottom surface of the groove (as described in the first end face 12) or the bottom surface of the groove (as described in the second end face 13). When the movable member interferes with the bottom surface of the groove or the surface opposite to the bottom surface of the groove, it will be restricted, thereby suppressing further deviation of the blocking part 30. Therefore, the deviation or vibration of the blocking part 30 can be suppressed. On the other hand, when the blocking part 30 moves, the movable member rolls relative to the surface opposite to the bottom surface of the groove, that is, relative to the blocking part 30 or the basket 10, thereby reducing the friction between the blocking part 30 and the basket 10 and allowing the blocking part 30 to move smoothly.

[0086] According to embodiments of the present invention, such as Figure 5As shown, the limiting portion 50 includes a first axial limiting portion 51. A first mounting end 512 of the first axial limiting portion 51 is disposed on the blocking portion 30, and a first movable member 511 of the first axial limiting portion 51 abuts against the first end face 12 of the housing 10. The distance from the bottom of the receiving groove formed by the first mounting end 512 to the first end face 12 is configured to be approximately the same as the maximum diameter of the first movable member 511. And / or, a second axial limiting portion 52, a second mounting end 522 of the second axial limiting portion 52 is disposed on the second end face 13 of the housing 10, and a second movable member 521 of the second axial limiting portion 52 abuts against the lower end face of the convex ring 31. The distance from the bottom of the receiving groove formed by the second mounting end 522 to the lower end face of the convex ring 31 is configured to be approximately the same as the maximum diameter of the second movable member 521.

[0087] In some illustrative embodiments, such as Figure 5 As shown, the filter section 20, configured as a cylindrical structure, is vertically arranged within the housing 10. Specifically, the axial direction of the filter section 20 is vertical. Based on this, the first mounting end 512 of the first axial limiting part 51 includes, but is not limited to, being disposed on the inner edge of the annular member 32. The first mounting end 512 includes, but is not limited to, being configured as a hollow cylindrical structure. A cylindrical receiving groove is formed on the inner side of the first mounting end 512. The lower end of the first movable member 511 is rotatably disposed within this receiving groove, and its upper end protrudes from the top surface of the first mounting end 512 (i.e., the distance between the top surface and the bottom surface of the groove is less than the maximum diameter of the movable member, i.e., 0 < H2 ≤ R1, such as...). Figure 5 As shown), and abuts against the first end face 12 of the basket 10 located above the first axial limiting part 51. Thus, when the blocking part 30 rotates relative to the filter part 20, since the filter part 20 is fixed to the basket 10, the first movable member 511 will rotate with the blocking part 30 relative to the basket 10 and roll relative to the first end face 12.

[0088] Similarly, in some illustrative embodiments, the second mounting end 522 of the second axial limiting portion 52 includes, but is not limited to, being disposed on the second end face 13, which is located below the first end face 12 and parallel to the first end face 12. Furthermore, a cylindrical receiving groove is formed on the inner side of the second mounting end 522, and the lower end of the second movable member 521 is rotatably disposed within this receiving groove, while its upper end protrudes from the top surface of the second mounting end 522 and abuts against the lower end face of the protruding ring 31.

[0089] In other words, based on the aforementioned first axial limiting part 51 and second axial limiting part 52, the first movable member 511 restricts the upward displacement of the blocking part 30 in the axial direction, while the second movable member 521 restricts the downward displacement of the blocking part 30 in the axial direction. This prevents the blocking part 30 from shifting axially when rotating relative to the filter part 20. Furthermore, since both the first movable member 511 of the first axial limiting part 51 and the second movable member 521 of the second axial limiting part 52 are in rolling engagement with the basket 10 or the convex ring 31, this also allows for less friction between the blocking part 30 and the basket 10 while limiting its movement, thus making the blocking part 30 rotate more smoothly and stably relative to the filter part 20.

[0090] In some illustrative embodiments, such as Figure 5 As shown, the receiving grooves formed by the first axial limiting portion 51 and the second axial limiting portion 52 each include a bottom surface and a side surface adjacent to the bottom surface. The lower end of the movable member (and the first movable member 511 and the second movable member 521) configured as a sphere is supported on the bottom surface of the groove, while the side surface of the groove is used to limit the rolling range of the movable member to prevent the movable member from falling out of the receiving groove during rolling. Specifically, the distance (H1, such as the distance between the opposite sides of two opposing groove sides (e.g., a cubic receiving groove formed by at least four groove sides) or a cylindrical receiving groove formed by a curved surface) is... Figure 5 As shown, all are configured to match the maximum diameter of the moving part (e.g., the diameter of a sphere, R1, as shown). Figure 5 (As shown) are roughly the same.

[0091] Here, "approximately the same" can be understood as, ideally, the distance between two opposite groove sides, and the distance between opposite sides of a groove side, being the same as, slightly smaller than, or slightly larger than the maximum diameter of the movable part. When set slightly smaller, the first end face 12 or the second end face 13 can tightly abut against the movable part, allowing the movable part to roll relative to the first end face 12 or the second end face 13. For example, it can be configured to be 1 to 2 millimeters smaller than the maximum diameter of the movable part, reducing the offset of the toothed segment relative to the drive gear 42 during the rotation of the shielding part 30, allowing for a better and tighter fit between the toothed segment and the drive gear 42. Furthermore, to compensate for tolerances generated during manufacturing, and unavoidable dimensional differences caused by shrinkage or expansion of the movable part and / or the mounting end under different temperature conditions, the distance between two groove sides or the distance between opposite sides of a groove side can also be configured to be slightly larger than the maximum diameter of the movable part, i.e., H1 ≥ R1. For example, it can be configured to be 1 to 2 millimeters larger than the maximum diameter of the movable part, which helps to make the rolling of the movable part smoother and prevents it from getting stuck in the mounting end.

[0092] Similarly, the distance between the first end face 12 and the bottom surface of the groove of the first mounting end 512, and the distance between the second end face 13 and the bottom surface of the groove of the second mounting end 522, are also configured to be approximately the same as the maximum diameter of the movable part for similar reasons, in order to prevent the movable part from jamming due to excessive pressure, or from separating from the housing 10 or the convex ring 31 due to excessive spacing. It should be understood that the embodiments of this utility model are not limited thereto.

[0093] For example, the receiving groove formed by the first mounting end 512 and / or the second mounting end can also be configured as a strip groove, the extension direction of which includes, but is not limited to, being configured to extend in the rotation direction of the blocking part 30. That is, the moving part can also reciprocate and roll along the extension direction of the receiving groove.

[0094] According to embodiments of the present invention, such as Figure 6 As shown, the limiting part 50 also includes a radial limiting part 53. The third mounting end 532 of the radial limiting part 53 is provided on the second end face 13 of the housing 10, and the third movable member 531 of the radial limiting part 53 abuts against the blocking part 30.

[0095] According to embodiments of the present invention, such as Figure 6 As shown, the third mounting end 532 forms an opening on the side facing the shielding part 30. A limiting plate 533 is provided in the opening. The limiting plate 533 is provided with a limiting hole 5331. The diameter of the limiting hole 5331 is configured to be smaller than the maximum diameter of the third movable member 531, so that a part of the third movable member 531 is exposed in the limiting hole 5331 and abuts against the shielding part 30.

[0096] In some illustrative embodiments, such as Figure 6 As shown, the third mounting end 532 includes, but is not limited to, being disposed on the second end face 13 of the housing 10, and the third mounting end 532 is offset from the second mounting end 522 in the circumferential direction. Specifically, the bottom surface of the receiving groove formed by the third mounting end 532 is located radially outside the annular member 32 and faces the annular member 32. Further, the opening of the receiving groove formed by the third mounting end 532 faces the annular member 32. The third movable member 531 includes, but is not limited to, using a sphere similar to the first movable member 511 and the second movable member 521, but unlike the movable members configured in the first axial limiting part 51 and the second axial limiting part 52, which can be held within the receiving groove under their own weight, a limiting plate 533 is correspondingly provided within the opening to prevent the third movable member 531 from falling out through the opening formed by the third mounting end 532. A through limiting hole 5331 is provided within the limiting plate 533, thereby restricting the third movable member 531 between the bottom surface of the groove and the limiting plate 533.

[0097] The distance between the limiting plate 533 and the bottom surface of the groove is configured to be less than the maximum diameter of the third movable member 531, so that the end of the third movable member 531 facing the annular member 32 can protrude from the limiting hole 5331 and abut against the outer wall surface of the annular member 32. Furthermore, the diameter of the limiting hole 5331 formed by the limiting plate 533 must also be configured to be less than, greater than, or equal to, the maximum diameter of the third movable member 531, so that the third movable member 531 can roll freely within the limiting hole 5331.

[0098] Of course, to accommodate the diameter variations of the moving parts, the limiting hole 5331 should also adopt a variable diameter design. That is, the inner diameter of the limiting hole 5331 corresponding to the larger diameter side of the moving part is larger, while the inner diameter corresponding to the smaller diameter side of the moving part is smaller. In this way, by restricting the moving part through the limiting hole 5331, the free rolling of the third moving part 531 within the limiting hole 5331 can be maintained, while preventing the third moving part 531 from detaching from the limiting plate 533. The third moving part 531 can be disposed between the limiting plate 533 and the bottom surface of the groove, or it can be disposed within the limiting plate 533.

[0099] In this embodiment, for the filter section 20 configured as a cylindrical structure, the first axial limiting part 51 and the second axial limiting part 52 can be understood as clamping the blocking part 30 from both axial sides, thereby effectively limiting the displacement of the blocking part 30 in the axial direction. Similarly, the radial limiting part 53 is used to limit the displacement of the blocking part 30 in the radial direction.

[0100] Figure 7 This is a magnified view of another type of radial limiting part.

[0101] In other illustrative embodiments, such as Figure 7 As shown, the radial limiting part 53 can be integrally provided with the first axial limiting part 51 or the second axial limiting part 52. Specifically, the end faces of the movable member facing the first end face 12 and the annular part 32 of the blocking part 30 can both be exposed outside the mounting end and abut against each other. In this way, the blocking part 30 can be limited in both the axial and radial directions along the drive part 40 by means of a single movable member and mounting end.

[0102] Based on this, for the filter section 20 configured as a plate structure, the aforementioned axial limiting part 50 (such as the first axial limiting part 51 and the second axial limiting part 52) ​​and radial limiting part 53 can abut against two adjacent and orthogonal surfaces of the filter section 20.

[0103] For example, in the above embodiment where the filter section 20 includes a rectangular frame and filter media disposed within the frame, the rectangular frame includes a top beam and a bottom beam disposed opposite each other, and also includes two side beams disposed between the top beam and the bottom beam. The length of the side beams is configured to be greater than the width of the top beam. Therefore, the extension direction of the side beams can be understood as the length direction of the filter section 20, and the extension direction of the top beam and the bottom beam can be understood as the width direction of the filter section 20. The filter media is disposed in the area enclosed by the frame and filters air along the thickness direction of the filter section 20.

[0104] Based on this, the motor 41 of the drive unit 40 has a drive shaft that extends in a direction parallel to the length direction of the filter unit 20. The output shaft 43 of the motor 41 is provided with a drive gear 42, which meshes with the rack provided in the blocking part 30. Thus, the blocking part 30 can be reciprocated in the width direction of the filter unit 20 under the action of the drive gear 42. To make the translation of the blocking part 30 relative to the filter unit 20 smoother, the aforementioned axial limiting part 50 can be provided on the top surface of the top beam of the filter unit 20, and the aforementioned radial limiting part 53 can be provided on the side surface of the top beam adjacent to the top surface.

[0105] In other embodiments, the drive unit 40 may also be located on one side of the side beam of the filter unit 20, that is, the drive shaft extends in a direction parallel to the thickness direction of the filter unit 20, and the output shaft 43 of the motor 41 is provided with a drive gear 42, which meshes with the rack provided on the blocking part 30. In this way, the blocking part 30 can be reciprocated along the length direction of the filter unit 20 under the action of the drive gear 42. To make the translation of the blocking part 30 relative to the filter unit 20 smoother, a limiting part 50 may be provided in the thickness direction of the filter unit 20.

[0106] Based on the implementation method provided in the first embodiment above, when the air purifier is running (which can be understood as the motor of the air supply unit driving the fan blades to rotate to form an airflow), the air in the target space enters the air purifier through the air inlet 21. At this time, the part of the filter section 20 blocked by the shielding part 30 cannot take in air. Therefore, the air can only pass through the effective filtration area that is not blocked. In this way, the airflow velocity can be increased, thereby improving the filtration effect and helping to adsorb more floating dust or hair in the air, such as pet hair, thus improving the air purification effect.

[0107] However, if the shielding part 30 blocks a portion of the filter part 20 for an extended period, the effective filtration area of ​​the blocked portion will not be utilized, while the portion with continuous airflow may accumulate dust or hair, leading to increased air resistance and reduced purification efficiency. Therefore, in this embodiment, the shielding part 30 is configured to move relative to the filter part 20 under the action of the drive part 40. That is, when the drive part 40 controls the movement of the shielding part 30, the drive gear 42 provided on the output shaft 43 of the motor 41 can drive the shielding part 30 to move relative to the filter part 20.

[0108] It should be noted that the movement of the shielding part 30 relative to the filter part 20 can be either a circumferential rotation (as with the cylindrical filter part 20 described above) or a translation (as with the plate-shaped filter part 20 described above). This allows for changing the effective filtration area blocked by the shielding part 30. For example, with the plate-shaped filter part 20, the direction of movement of the shielding part 30 relative to the filter part 20 can be a translation along the upward direction. When the shielding part 30 is located above the filter part 20, the lower part of the filter part 20 is open, thereby concentrating airflow to adsorb pollutants such as dust from the ground. Conversely, when the shielding part 30 moves to the lower part of the filter part 20, the upper part of the filter part 20 is open, allowing for concentrated airflow to adsorb floating dust or pet hair. This results in better cleaning of the indoor air for the user.

[0109] Second Embodiment

[0110] The second embodiment of the present invention will be described below. The second embodiment has the same or similar structure as the first embodiment, and therefore will not be described again.

[0111] According to an embodiment of the present invention, the shielding part 30 includes at least two shielding pieces 33, which are spaced apart circumferentially along the annular member 32.

[0112] In some illustrative embodiments, the filter section 20 is, but is not limited to, configured as a cylindrical structure, which can be understood as a columnar body with a hollow structure, including but not limited to a cylindrical or square tube shape. The air inlet surface 22 is located on the outer peripheral side of the filter section 20, and the air outlet surface 23 is located on the inner peripheral side of the filter section 20. After air enters from the air inlet surface 22 on the outer peripheral side, it is blown out by the air outlet surface 23 on the inner peripheral side, and then blown out through the openings at both ends of the axial direction.

[0113] A shielding portion 30 is disposed on the outer periphery of the filter portion 20 and includes a shielding plate 33. The shielding plate 33 is disposed on the outer periphery of the filter portion 20, opposite to the air inlet surface 22 of the filter portion 20, and is used to shield the air inlet surface 22 of the effective filtration area of ​​the filter portion 30. In this embodiment, the shielding portion 30 includes two opposing shielding plates 33, with a certain distance between the two opposing shielding plates 33, so that a portion of the effective filtration area allows air to enter the filter portion 20. In other embodiments, the shielding portion 30 may also include one, two, three, four, five, or any other number of shielding plates 33.

[0114] Figure 8 yes Figure 2 The diagram shows the arrangement of the limiting part of the air purification device.

[0115] According to embodiments of the present invention, such as Figure 8 As shown, the air purification device includes at least three first axial limiting portions 51, which are equally spaced along the circumference of the filter portion 20. And / or, at least three second axial limiting portions 52, which are equally spaced along the circumference of the filter portion 20. And / or, at least two radial limiting portions 53, which are equally spaced along the circumference of the filter portion 20.

[0116] In this embodiment, the force on the shielding part 30 can be evenly distributed along the circumference of the shielding part 30 by the first axial limiting part 51, the second axial limiting part 52 and the radial limiting part 53 as described above, so as to smoothly couple it with the basket 10, thereby avoiding collisions during rotation and reducing noise.

[0117] Figure 9 yes Figure 1 A magnified view of the cleaning section of the air purification device shown. Figure 10 yes Figure 9 A magnified view of the cleaning section from another perspective.

[0118] According to embodiments of the present invention, such as Figure 9 and Figure 10 As shown, the air purification unit also includes a cleaning section 60. The cleaning section 60 is disposed on the outside of the filter section 20 and is configured to remove at least a portion of foreign matter from the air inlet surface 22 of the filter section 20.

[0119] Figure 11 yes Figure 9 The diagram shows the cleaning unit's scraper in the first position, indicating its usage status. Figure 12 yes Figure 9 The diagram shows the cleaning unit's scraper in the second position, indicating its usage status.

[0120] According to embodiments of the present invention, such as Figures 9 to 12 As shown, the cleaning unit 60 includes a scraper 61 and an actuation mechanism 62. The scraper 61 is configured to move between a first position where it is disengaged from the air inlet surface 22 of the filter unit 20 and a second position where one end of the scraper 61 abuts against the air inlet surface 22 of the filter unit 20. The actuation mechanism 62 is configured to move the scraper 61 between the first position and the second position according to a target operation.

[0121] In some illustrative embodiments, such as Figure 9 and Figure 10 As shown, the cleaning section 60 includes, but is not limited to, being disposed on the shielding section 30 and moving synchronously with the shielding section 30 relative to the filter section 20. For example, for the filter section 20 with the above-described cylindrical structure, the cleaning section 60 may be configured to rotate relative to the axis of the filter section 20.

[0122] Based on this, the cleaning unit 60 includes a scraper 61 and an actuation mechanism 62. Under the action of the actuation mechanism 62, the scraper 61 can move radially between a first position that is far apart and a second position that is close together relative to the air inlet surface 22 of the filter unit 20. When the scraper 61 is in the first position, a gap is formed between the scraper 61 and the air inlet surface 22 of the filter unit 20. When the scraper 61 is in the second position, the scraper 61 and the air inlet surface 22 of the filter unit 20 are in contact with each other. Thus, when the cleaning unit 60 moves relative to the filter unit 20 (such as rotating as described above), the scraper 61 scrapes off at least part of the foreign matter attached to the surface of the filter unit 20, so as to prevent the effective filtration area of ​​the covered part from being unable to enter the filter unit 20 due to debris such as dust and hair blocking the air inlet surface 22 of the filter unit 20.

[0123] According to embodiments of the present invention, such as Figure 9 and Figure 10 As shown, the scraping member 61 has a connecting end 612 and a scraping end 611 that are opposite to each other. The connecting end 612 is pivotally connected to the inner edge of the annular member 32, and the scraping end 611 is configured to abut against or disengage from the filter section 20 as the connecting end 612 rotates.

[0124] According to embodiments of the present invention, such as Figure 9 and Figure 10 As shown, the scraper 61 has a first cleaning surface 613 facing the filter section 20 and a second cleaning surface 614 away from the filter section 20. Along the extending direction of the scraper 61, the distance between the first cleaning surface 613 and the second cleaning surface 614 gradually increases from the scraping end 611 to the connecting end 612.

[0125] According to embodiments of the present invention, such as Figure 9 and Figure 10As shown, the first cleaning surface 613 is configured as a curved surface. And / or, the second cleaning surface 614 is configured as a curved surface.

[0126] In some illustrative embodiments, such as Figure 9 and Figure 10 As shown, the connecting end 612 of the scraper 61 can be understood as the end of the scraper 61 connected to the actuation mechanism 62, while the scraping end 611 can be understood as the end of the scraper 61 used to contact the air inlet surface 22 of the filter section 20 to scrape off foreign objects. The connecting end 612 and the scraping end 611 can be integrally formed, or they can be two parts connected by bonding, snap-fitting, or other arbitrary methods. Furthermore, the scraper 61 generally has a first cleaning surface 613 and a second cleaning surface 614. The scraping end 611 is formed at the intersection of one side of the first cleaning surface 613 and the second cleaning surface 614, while the connecting end 612 is formed at the opposite side of the first cleaning surface 613 and the second cleaning surface 614.

[0127] For example, the radial section of the filter section 20 is a projection surface. In the projection along the axial direction of the filter section 20, the projection of the scraper 61 includes, but is not limited to, forming an approximately comma shape. That is, the projection of the scraping end 611 is sharp and curved, while the projection of the connecting end 612 is wider and more rounded than that of the scraping end 611.

[0128] According to embodiments of the present invention, such as Figure 9 and Figure 10 As shown, the actuation mechanism 62 includes a first slot 622, a first connecting rod 621, and a toggle member 64. The first slot 622 is disposed on the convex ring 31 and extends in the circumferential direction of the convex ring 31. One end of the first connecting rod 621 is pivotally connected to the portion of the scraper 61 located between the connecting end 612 and the scraping end 611, and the other end of the first connecting rod 621 is slidably connected to the first slot 622. The toggle member 64 is disposed on the housing 10 and is configured to contact the first connecting rod 621 during the rotation of the blocking portion 30 to actuate the first connecting rod 621 along the extending direction of the first slot 622.

[0129] In some illustrative embodiments, such as Figure 9 and Figure 10 As shown, the cleaning section 60 also includes a fixed shaft 63, through which the connecting end 612 of the scraper 61 is pivotally connected to the wall surface of the shielding section 30 facing the filter section 20. Furthermore, the cleaning section 60 also includes a central shaft, through which one end of the first connecting rod 621 is pivotally connected to the middle of the scraper 61. Even further, a first strip-shaped hole 622 is formed in the convex ring 31, and the other end of the first connecting rod 621 is slidably disposed within the first strip-shaped hole 622. The first strip-shaped hole 622 may be an oblong hole extending along the circumferential direction of the convex ring 31.

[0130] The lines connecting the central shaft and the fixed shaft 63, the straight line extending from the first connecting hole, and the straight line extending from the first connecting rod 621 are all non-collinear. This makes the scraper 61 a lever mechanism with the fixed shaft 63 as its fulcrum. When the end of the first connecting rod 621 away from the central shaft slides relative to the first slot 622, since the first connecting rod 621 is of a fixed length, its end connected to the central shaft will move closer to or further away from the filter section 20. This causes the scraper 61 to swing between the first and second positions.

[0131] Based on this, the actuation mechanism 62 also includes a toggle member 64, which is disposed in the housing 10 and extends toward the first connecting rod 621. Specifically, the toggle member 64 may be a protruding rib suspended above the first connecting rod 621, and the distance between the end of the protruding rib facing the first connecting rod 621 and the upper end face of the convex ring 31 should be configured to be approximately the same as the distance between the upper end face of the first connecting rod 621 and the upper end face of the convex ring 31.

[0132] In other words, when the first connecting rod 621 and the scraper 61 rotate with the blocking part 30 relative to the filter part 20, the actuating member 64 contacts the upper end face of the first connecting rod 621, thereby causing the first connecting rod 621 to slide within the first slot 622 under the action of friction, which in turn actuates the scraper 61 to swing between the first position and the second position. The two spacings mentioned above should be configured to be the same, but due to unavoidable reasons such as tolerances and the expansion and contraction of materials due to temperature changes, there may be slight differences between the two spacings, but this will not affect the actuating effect of the actuating member 64 on the first connecting rod 621. It should be understood that the embodiments of this utility model are not limited thereto.

[0133] For example, the end of the actuating member 64 that contacts the first link 621 may be made of an elastic material, or the actuating member 64 itself may be made of a rigid material, but an elastic material may be wrapped between it and the first link 621, specifically a thin film made of rubber, silicone, etc.

[0134] This increases the friction between the actuating member 64 and the first connecting rod 621. Furthermore, when the end of the first connecting rod 621 that is inside the first slot 622 can no longer slide relative to the first slot 622, the blocking part 30 can deform the actuating member 64 (or its end) under the action of the driving part 40 (such as the torque output by the motor 41 described above), so that the actuating member 64 will not prevent the blocking part 30 from further rotating relative to the cleaning part 60.

[0135] In the second embodiment described above, when the air purifier is running, air is drawn into the housing 10 from the air inlet 21 by the air supply section, and is drawn into the filter section 20 through the effective filtration area on the outer periphery of the filter section 20 that is not blocked by the shielding section 30. The air filtered by the filter section 20 is blown towards the side where the air supply section is located through the air outlet surface 23 on the inner periphery of the filter section 20, and is finally blown out through the air outlet 11 on the housing 10, thereby providing clean air to the user. In this embodiment, the shielding section 30 includes two shielding plates 33 arranged opposite each other as described above, with a gap between the two shielding plates 33 to allow air to enter the filter section 20.

[0136] After the air purifier has been running for a period of time, the open effective filtration area on the filter section 20 will accumulate a large amount of dust, lint, and other foreign matter, which may increase the air resistance of the filter section 20 and reduce its filtration efficiency. Therefore, the blocking section 30 should be rotated relative to the filter section 20 to change the effective filtration area it blocks. For example, after the blocking section 30 blocks the first area of ​​the effective filtration area and has been running for a period of time, it can be rotated to another position covering the second area of ​​the effective filtration area. This exposes the other parts of the effective filtration area (including the first area) outside the blocking section 30. In this way, the air intake direction can be changed, allowing the air purifier to filter and absorb dust or lint from different directions, enabling comprehensive filtration of indoor air and improving purification efficiency.

[0137] Furthermore, in this embodiment, the air purification device includes a plurality of limiting portions 50 evenly distributed circumferentially around the filter section 20. Specifically, it includes at least two radial limiting portions 53, at least three first axial limiting portions 51, and at least three second axial limiting portions 52. When the blocking section 30 rotates, the two radial limiting portions 53 together with the driving section 40 form a limiting position in the radial direction. Since the radial limiting portions 53 are evenly distributed circumferentially around the filter section 20, the blocking section 30 can maintain relative balance during rotation, thereby suppressing noise or displacement caused by the blocking section 30 losing balance during rotation. In another direction, the limiting portions 50 include at least three first axial limiting portions 51 and second axial limiting portions 52. This restricts the movement of the limiting portions 50 in the vertical direction when the blocking section 30 moves. Since the axial limiting parts 50 are evenly distributed around the filter part 20, when the blocking part 30 moves, it can maintain relative balance during rotation, thereby suppressing noise or deviation caused by the blocking part 30 losing balance during rotation.

[0138] Furthermore, in this embodiment, the air purification device also includes a cleaning section 60 located upstream of the filter section 20. The cleaning section 60 specifically includes a scraper 61 and an actuation mechanism 62. The cleaning section 60 is connected to the blocking section 30 via the aforementioned fixed shaft 63, central shaft, and first connecting rod 621, so that the scraper 61 rotates relative to the filter section 20 along with the blocking section 30. Therefore, when the blocking section 30 rotates, the scraper 61, driven by the blocking section 30, will rotate relative to the outer peripheral surface of the filter section 20, causing the scraping end 611 of the scraper 61 to contact the air inlet surface 22 of the filter section 20.

[0139] Specifically, when the blocking part 30 rotates in the first direction (such as counterclockwise) under the action of the driving part 40, the scraping part 61 will also rotate in the first direction. Specifically, the scraper 61 will rotate relative to the filter section 20 in the first direction. At this time, since the end face of the first connecting rod 621 facing the actuating member 64 is in contact with the actuating member 64 (as described above, the protruding rib), the end of the first connecting rod 621 located in the first slot 622 is restricted by the friction provided by the actuating member 64. It can be understood that the position of the end of the first connecting rod 621 located in the first slot 622 remains unchanged, while the first slot 622 continues to rotate in the first direction until the end of the first connecting rod 621 located in the first slot 622 is abutted against the end of the first slot 622 located away from the first direction. During this process, the scraper 61 swings from the first position to the second position, thereby abutting against the air inlet surface 22 of the filter section 20. At this time, since the end of the first connecting rod 621 located in the first slot 622 has been abutted against the end of the first slot 622, the scraper 61 can be held in the second position. At the same time, as the blocking part 30 rotates further, the torque output by the drive part 40 (such as the motor 41 mentioned above) is greater than the friction between the toggle member 64 and the first connecting rod 621. Therefore, the blocking part 30 will not be blocked by the toggle member 64, thereby driving the scraper 61 to rotate further relative to the filter part 20 to scrape off at least a portion of the foreign matter attached to the air inlet surface 22 of the filter part 20.

[0140] After the cleaning unit 60 completes cleaning of the filter unit 20, the control shielding unit continues to rotate a certain distance in the first direction until the first connecting rod 621 is in a position closer to the downstream side of the first direction than the actuating member 64. Then, the driving unit 40 causes the shielding unit 30 to rotate in a second direction opposite to the first direction (such as clockwise). Similarly, the first connecting rod 621 rotates in the opposite direction to a position that contacts the actuating member 64 (such as the protruding rib). At this time, the actuating member 64 restricts the end position of the first connecting rod 621 within the first slot 622 through friction, while the first slot 622 continues to rotate in the second direction until the end of the first connecting rod 621 within the first slot 622 abuts against the other end within the first slot 622. In this way, the scraping member 61 can be reset from the second position to the first position that is disengaged from the air inlet surface 22 of the filter unit 20. This causes the scraping member 61 to move closer to the shielding unit 30 and no longer contact the filter unit 20.

[0141] This prevents the scraper 61 from rubbing against the cleaning part 60 after cleaning the entire circumference of the filter part 20, thus avoiding the risk of wear on the air inlet surface 22 of the filter part 20 due to the removal of dust and other contaminants from the filter part 20. Furthermore, when the user does not require cleaning, or when the direction of rotation of the shielding part 30 needs to be changed during the cleaning process, the cleaning part 60 can be moved away from the filter part 20, preventing repeated friction between the scraper 61 and the filter part 20, which could generate noise or affect the service life of the filter part 20.

[0142] Third Embodiment

[0143] The third embodiment of the present invention will be described below. The third embodiment has the same or similar structure as the first and second embodiments, and therefore will not be described again.

[0144] According to embodiments of the present invention, such as Figure 9 and Figure 10 As shown, the actuation mechanism 62 also includes a second slotted hole 624 and a second connecting rod 623. The second slotted hole 624 is disposed on the convex ring 31 and extends in the radial direction of the convex ring 31, and is located outside the first slotted hole 622. One end of the second connecting rod 623 is pivotally connected to the other end of the first connecting rod 621, and the other end of the second connecting rod 623 is slidably connected to the second slotted hole 624.

[0145] According to embodiments of the present invention, such as Figure 9 and Figure 10 As shown, the actuation mechanism 62 also includes a toggle member 64. The toggle member 64 is configured to contact the second link 623 during rotation of the blocking portion 30 to actuate the second link 623 along the extending direction of the second slot 624.

[0146] In some illustrative embodiments, such as Figure 9 and Figure 10 As shown, the second connecting rod 623 is located on the protruding ring 31 of the blocking portion 30, with one end pivotally connected to the first connecting rod 621 and the other end slidably disposed within the second elongated hole 624. In this embodiment, the second connecting hole is an elongated opening formed along the radial direction of the blocking portion 30. Furthermore, the second connecting hole is closer to the fixed shaft 63 than the end of the first connecting hole that is farther from the fixed shaft 63. That is, the second connecting hole is disposed closer to the fixed shaft 63 than the second end of the first connecting hole. Also, the second connecting hole is farther from the filter portion 20 than the first connecting hole.

[0147] In some illustrative embodiments, such as Figure 11 and Figure 12 As shown, when the blocking part 30 is driven by the driving part 40, it moves along the first direction (such as the counterclockwise direction, such as...) Figure 11 When the scraper 61 rotates in the X direction (as shown), it will also translate along the first direction. Specifically, the scraper 61 will translate relative to the filter section 20 in the first direction. At this time, since the end face of the second link 623 facing the actuating member 64 is in contact with the actuating member 64 (as described above, the protruding rib), the end of the second link 623 located in the second slot 624 is restricted by the friction provided by the actuating member 64. It can be understood that the position of the end of the second link 623 located in the second slot 624 remains unchanged, while the second slot 624 continues to translate in the first direction until the end of the second link 623 located in the second slot 624 is abutted against the end of the second slot 624 located away from the first direction. During this process, the scraper 61 swings from the first position to the second position, thereby abutting against the air inlet surface 22 of the filter section 20. At this time, since the end of the second link 623 located in the second slot 624 has been abutted against the end of the second slot 624, the scraper 61 can be maintained in the second position. Meanwhile, since the ends of the second connecting rod 623 and the first connecting rod 621 located within the first slot 622 are linked, the scraper 61 can be adjusted from the first position to the second position and held in the second position. The specific method for adjusting the position of the scraper 61 via the first connecting rod 621 is similar to that in the second embodiment described above, and therefore will not be repeated here.

[0148] After the cleaning unit 60 completes cleaning of the filter unit 20, the control shielding unit continues to rotate a certain distance in the first direction until the second connecting rod 623 is in a position closer to the downstream side of the first direction than the toggle member 64. Then, the drive unit 40 causes the shielding unit 30 to rotate in a second direction opposite to the first direction (e.g., clockwise). Figure 12Rotating in the Y direction (as shown above), similarly, the second link 623 rotates in the opposite direction to contact the actuating member 64 (as described above, the rib). At this time, the actuating member 64 restricts the end position of the second link 623 within the second slot 624 through friction, while the second slot 624 continues to translate along the second direction until the end of the second link 623 within the second slot 624 abuts against the other end within the second slot 624. In this way, the scraper 61 can be reset from the second position to the first position, disengaged from the air inlet surface 22 of the filter section 20. How the position of the scraper 61 is adjusted by the first link 621 is similar to that in the second embodiment described above, and therefore will not be repeated. Thus, the scraper 61 can be more flexibly retracted or opened relative to the filter section 20.

[0149] The embodiments of this utility model have now been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of this utility model.

[0150] It should be noted that implementations not shown or described in the accompanying drawings or the main text of the specification are all forms known to those skilled in the art and are not described in detail. Furthermore, the definitions of the components described above are not limited to the specific structures and shapes mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An air purification device, characterized in that, include: The basket body has an air inlet for air to enter; A filter section is disposed in the housing, and the filter section is located downstream of the air inlet along the airflow direction; A shielding part is provided on the upstream side of the filter part to shield part of the effective filtration area of ​​the filter part; The driving unit is configured to drive the blocking unit to move relative to the filtering unit so that the blocking unit blocks different portions of the effective filtering area.

2. The air purification device according to claim 1, characterized in that, The filter section is configured as a cylindrical structure, and the effective filtration area is formed circumferentially by the filter section. A portion of the shielding part covers the outside of the filter part.

3. The air purification device according to claim 2, characterized in that, The shielding part includes: An annular component is located above the filter section. The inner diameter of the annular component is configured to be larger than the outer diameter of the filter section, and the center of the annular component coincides with the extension direction of the axis of the filter section. At least one shielding piece is disposed on the annular member and configured to extend along the axial direction of the filter section to the outside of the filter section.

4. The air purification device according to claim 3, characterized in that, The shielding portion includes at least two shielding plates, which are spaced apart circumferentially along the annular member.

5. The air purification device according to claim 3, characterized in that, The shielding part also includes: A convex ring is disposed at the upper end of the annular member and extends outward along the radial direction of the convex ring. The driving part is configured to be drivenly connected to the convex ring to drive the blocking part to rotate relative to the filter part about the axis of the filter part, so that the blocking part faces different parts of the effective filtration area.

6. The air purification device according to claim 1 or 5, characterized in that, The drive unit includes: A drive mechanism is provided in the housing to output torque; The transmission mechanism is configured to transmit the torque output by the drive mechanism to the shield.

7. The air purification device according to claim 6, characterized in that, The drive mechanism includes a motor, and the transmission mechanism includes a drive gear disposed on the output shaft of the motor; The outer edge of the shielding part is provided with a toothed section, which is configured to mesh with the driving gear so that the shielding part moves in a driven manner.

8. The air purification device according to claim 6, characterized in that, Also includes: A limiting part is disposed between the basket body and the blocking part; The limiting portion is configured to limit the offset of the blocking portion along the axial direction of the drive mechanism and / or the offset along the radial direction.

9. The air purification device according to claim 8, characterized in that, The limiting part has an installation end and a movable part. The installation end is disposed on one of the basket and the shielding part, and the movable part is disposed on the installation end and abuts against the other of the basket and the shielding part. The movable component comes into contact with the basket or the shielding part.

10. The air purification device according to claim 9, characterized in that, The mounting end forms a receiving groove, the movable part is rotatably disposed in the receiving groove, a part of the movable part is disposed in the receiving groove, and another part of the movable part is exposed outside the receiving groove and abuts against the basket or the shielding part.

11. The air purification device according to claim 10, characterized in that, The limiting part includes: A first axial limiting part, the first mounting end of the first axial limiting part is disposed on the shielding part, and the first movable part of the first axial limiting part abuts against the first end face of the basket. The distance from the bottom of the receiving groove formed by the first mounting end to the first end face is configured to be approximately the same as the maximum diameter of the first movable part. And / or, a second axial limiting part, the second mounting end of the second axial limiting part is disposed on the second end face of the basket, and the second movable part of the second axial limiting part abuts against the blocking part; The distance from the bottom of the receiving groove formed by the second mounting end to the shielding part is configured to be approximately the same as the maximum diameter of the second movable member.

12. The air purification device according to claim 11, characterized in that, The limiting part further includes: A radial limiting part, wherein the third mounting end of the radial limiting part is disposed on the second end face of the basket, and the third movable part of the radial limiting part abuts against the blocking part.

13. The air purification device according to claim 12, characterized in that, The third mounting end forms an opening on the side facing the shielding part. A limiting plate is provided in the opening. The limiting plate is provided with a limiting hole. The diameter of the limiting hole is configured to be greater than or equal to the maximum diameter of the third movable member, so that a portion of the third movable member is exposed to the limiting hole and abuts against the shielding part.

14. The air purification device according to claim 13, characterized in that, include: At least three first axial limiting portions are provided at equal intervals along the circumference of the filter portion; And / or, at least three second axial limiting portions, at least three second axial limiting portions are arranged at equal intervals along the circumference of the filter portion; And / or, at least two of the radial limiting portions are arranged at equal intervals along the circumference of the filter portion.

15. The air purification device according to claim 5, characterized in that, Also includes: A cleaning section, located outside the filter section, is configured to remove at least a portion of foreign matter from the air inlet surface of the filter section.

16. The air purification device according to claim 15, characterized in that, The cleaning unit includes: The scraper is configured to move between a first position where it is disengaged from the air inlet surface of the filter and a second position where one end of the scraper abuts against the air inlet surface of the filter. An actuation mechanism is configured to move the scraper between the first position and the second position according to a target operation.

17. The air purification device according to claim 16, characterized in that, The scraping component has a connecting end and a scraping end that are opposite to each other; The connecting end is pivotally connected to the inner edge of the annular member, and the scraping end is configured to abut against or detach from the filter section as the connecting end rotates.

18. The air purification device according to claim 17, characterized in that, The actuation mechanism includes: A first strip-shaped hole is provided on the convex ring and extends along the circumferential direction of the convex ring; A first link, one end of which is pivotally connected to the portion of the scraper located between the connecting end and the scraping end, and the other end of which is slidably connected to the first strip hole to connect the scraper to the shielding portion, so that the scraper rotates with the shielding portion relative to the filter portion.

19. The air purification device according to claim 18, characterized in that, The actuation mechanism further includes: A second strip-shaped hole is provided on the convex ring and extends along the radial direction of the convex ring. The second strip-shaped hole is located outside the first strip-shaped hole. The second link has one end pivotally connected to the other end of the first link, and the other end slidably connected to the second slot.

20. The air purification device according to claim 19, characterized in that, The actuation mechanism further includes: A toggle element, disposed in the housing, is configured to contact the first connecting rod during rotation of the blocking portion, so as to toggle the first connecting rod along the extension direction of the first strip hole; Alternatively, the actuating element is configured to contact the second link during rotation of the blocking portion to actuate the second link along the extension direction of the second slot.

21. The air purification device according to claim 17, characterized in that, The scraper has a first cleaning surface facing the filter section and a second cleaning surface away from the filter section. Along the extending direction of the scraper, the distance between the first cleaning surface and the second cleaning surface gradually increases from the scraping end to the connecting end.

22. The air purification device according to claim 21, characterized in that, The first cleaning surface is configured as a curved surface; And / or, the second cleaning surface is configured as a curved surface.

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