Air purifier

Abstract

The invention relates to an air purifier. The air purifier comprises a shell assembly, a filter screen and a fan. The shell assembly can stretch out and draw back in the first direction, and an air inlet and an air outlet are formed in the shell assembly. The filter screen is arranged in the shell assembly and comprises a plurality of filter screen sections which are connected in sequence, and any two adjacent filter screen sections are connected in a sliding mode in the first direction; the fan is arranged in the shell assembly and used for enabling external air to enter from the air inlet and penetrate through the filter screen section to be blown out from the air outlet. When the air purifier is idle, the shell assembly shrinks, and meanwhile, the multiple filter screen sections slide and retract in the first direction, so that the height of the air purifier is reduced, the occupied space is small, and then storage is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of air purification, and in particular to an air purifier. Background Art

[0002] At present, household and commercial air purifiers are widely used in the field of indoor air purification.

[0003] In related technologies, in order to ensure that the air purifier has sufficient air intake, purification and air outlet space, and can accommodate core components such as fans and filtration systems, the current household and commercial air purifiers on the market are generally more than 500mm in height, and some large commercial models can even reach more than 1 meter.

[0004] However, due to the high height of the air purifier, it takes up a lot of space when idle, which is not conducive to market promotion in today's context of promoting simple household storage. Summary of the Invention

[0005] Based on this, it is necessary to provide an air purifier to address the problem of the high height of the air purifier.

[0006] An air purifier, comprising:

[0007] A housing assembly, the housing assembly being capable of extending and retracting along a first direction and having an air inlet and an air outlet;

[0008] A filter screen is disposed in the housing assembly, the filter screen comprising a plurality of filter screen segments connected in sequence, and any two adjacent filter screen segments are connected by sliding along a first direction;

[0009] The fan is arranged in the housing assembly and is used to allow external air to enter from the air inlet and pass through the filter segment to be blown out from the air outlet.

[0010] In one embodiment, the cross section of each filter segment along the first direction is a closed geometric figure, and the plurality of filter segments are sequentially arranged from the outside to the inside.

[0011] In one embodiment, any two adjacent filter segments are respectively the first filter segment and the second filter segment, the first filter segment is provided with a slide groove extending along the first direction, and the second filter segment is provided with a guide rail extending along the first direction, and the guide rail cooperates with the slide groove.

[0012] In one embodiment, the air purifier includes a locking structure, which is provided between the first filter segment and the second filter segment, and is used to lock the corresponding first filter segment and the second filter segment.

[0013] In one embodiment, the locking structure includes an elastic protrusion arranged on any one of the first filter segment and the second filter segment and a locking groove opened on the other of the first filter segment and the second filter segment, and the elastic protrusion is used to bounce into the locking groove along a second direction, and the second direction is perpendicular to the first direction.

[0014] In one embodiment, a slide groove is provided on the first filter segment, and a guide rail is provided on the second filter segment;

[0015] The guide rail is provided with elastic protrusions at both ends along the first direction. The elastic protrusions protrude outward from the guide rail along the second direction. The sliding groove has a groove bottom. The groove bottom is provided with locking grooves at both ends along the first direction.

[0016] In one embodiment, the shell assembly includes an outer shell and a top cover and a base respectively arranged at both ends of the outer shell along a first direction, the air inlet is opened on the outer shell, the air outlet is opened on the top cover, and the fan is arranged at one end of the filter screen close to the top cover.

[0017] In one embodiment, the shell assembly includes a telescopic bracket and a protective shell, the telescopic bracket includes a plurality of bracket segments connected in sequence, any two adjacent bracket segments are connected by sliding along a first direction, and the protective shell is arranged around the telescopic bracket in the expanded state.

[0018] In one embodiment, the plurality of bracket segments are a head bracket segment, a middle bracket segment and a tail bracket segment connected in sequence, the head bracket segment is fixedly connected to the top cover, and the tail bracket segment is fixedly connected to the base;

[0019] One end of the protective shell is fixedly connected to the top cover, and the other end is fixedly connected to the base.

[0020] In one embodiment, the shell includes a plurality of shell segments connected in sequence, and any two adjacent shell segments are slidably connected along a first direction. One end of the filter along the first direction is connected to the shell through the top cover, and the other end of the filter along the first direction is connected to the shell through the base.

[0021] In the above-mentioned air purifier, the shell assembly can be extended and retracted along the first direction, and any two adjacent filter segments are connected by sliding along the first direction, so that when the air purifier is idle, the shell assembly shrinks, and at the same time, the multiple filter segments slide and retract along the first direction, so that the height of the air purifier is reduced. When the air purifier needs to be used, the shell assembly is extended, and at the same time, the two connected filter segments are expanded by sliding along the first direction, and then the fan is turned on. Under the action of the fan, the outside air can enter from the air inlet and pass through the filter segments, and after being filtered by the filter, it is blown out from the air outlet. That is, when the air purifier of the present application is idle, the height can be reduced, the space occupied is small, and it is convenient to store. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of an air purifier in one embodiment.

[0023] Figure 2 Schematic diagram of the structure of the filter screen in one embodiment.

[0024] Figure 3 Schematic diagram of the structure of two adjacent filter segments in one embodiment.

[0025] Figure 4 Schematic diagram of the structure of the housing assembly in one embodiment.

[0026] Figure 5 Schematic diagram of the structure of the housing in another embodiment.

[0027] Reference numerals: 100, housing assembly; 110, housing; 111, telescopic bracket; 1111, bracket segment; 1111a, head bracket segment; 1111b, middle bracket segment; 1111c, tail bracket segment; 112, protective shell; 120, top cover; 130, base; 140, housing segment; 140a, head bracket segment; 140b, middle bracket segment; 140c, tail bracket segment;

[0028] 200, filter; 210, filter segment; 210a, head filter segment; 210b, middle filter segment; 210c, tail filter segment; 211, first filter segment; 212, second filter segment; 220, slide; 230, guide rail; 240, locking structure; 241, locking slot; 242, elastic boss;

[0029] 300. Fan. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0033] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0036] See Figure 1 and Figure 2 An air purifier provided in one embodiment of the present application includes a shell assembly 100, a filter 200 and a fan 300. The shell assembly 100 can be extended and retracted along a first direction, and an air inlet and an air outlet are provided on the shell assembly 100; the filter 200 is arranged in the shell assembly 100, and the filter 200 includes a plurality of filter segments 210 connected in sequence, and any two adjacent filter segments are slidably connected along the first direction; the fan 300 is arranged in the shell assembly 100, and is used to allow external air to enter from the air inlet and pass through the filter segment 210 to be blown out from the air outlet.

[0037] In this embodiment, the first direction is the height direction of the air purifier, the housing assembly 100 can be extended and retracted along the first direction, and any two adjacent filter segments are connected by sliding along the first direction, so that when the air purifier is idle, the housing assembly 100 shrinks, and at the same time, multiple filter segments slide and retract along the first direction, so that the height of the air purifier is reduced. When the air purifier needs to be used, the housing assembly 100 is extended, and at the same time, the two connected filter segments are extended along the first slide, and then the fan 300 is turned on. Under the action of the fan 300, the outside air can enter from the air inlet and pass through the filter segment 210, and after being filtered by the filter 200, it is blown out from the air outlet. That is, when the air purifier of the present application is idle, the height can be reduced, the space occupied is small, and it is convenient to store.

[0038] In some embodiments, the cross section of each filter segment along the first direction is a closed geometric figure, and the multiple filter segments are sequentially arranged from the outside to the inside.

[0039] In this embodiment, the cross-section of each filter segment along the height direction is a closed geometric figure, so that multiple filter segments can be arranged in sequence from the outside to the inside, which can improve the stability of the expansion and contraction process, and can further optimize the space utilization efficiency during the contraction process, avoiding interference between the filter segments 210 spaced apart from each other, and significantly improving the practicality and convenience of the product.

[0040] For example, the cross-section of the filter segments 210 along the height direction is circular, and each filter segment has the same height. The multiple filter segments include a first filter segment, a second filter segment, and a third filter segment. When folded, the first filter segment is positioned outside the second filter segment, and the second filter segment is positioned outside the third filter segment. This reduces the stacked height of the three filter segments along the first direction to the height of a single filter segment, thereby significantly reducing the height of the folded air purifier.

[0041] In other embodiments, the height of the second filter segment is equal to the sum of the heights of the first and third filter segments, and the first and third filter segments are both located outside the second filter segment. After folding, the total height of the three filter segments is reduced to the height of the second filter 200, which also reduces the height of the folded air purifier.

[0042] Of course, the multiple filter segments may also be arranged in other nested relationships, as long as the total height of the entire filter 200 can be reduced.

[0043] In some embodiments, combined Figure 3 Any two adjacent filter segments are respectively the first filter segment 211 and the second filter segment 212. The first filter segment 211 is provided with a slide groove 220 extending along the first direction, and the second filter segment 212 is provided with a guide rail 230 extending along the first direction, and the guide rail 230 cooperates with the slide groove 220.

[0044] In this embodiment, the cross-section of each filter segment along the height direction is circular, and the guide rail 230 is used to protrude outward radially along the filter segment 210. Any two adjacent filter segments are connected by the guide rail 230 extending along the first direction and the slide groove 220, so that the guide rail 230 is embedded in the slide groove 220 along the radial direction of the filter segment 210. The slide groove 220 is used to guide the guide rail 230, thereby allowing any two adjacent filter segments to be slidably connected along the first direction.

[0045] Specifically, a plurality of chutes 220 are sequentially provided around the circumference of the first filter segment 211, and a plurality of guide rails 230 are sequentially provided around the circumference of the second filter segment 212. The guide rails 230 are provided in a one-to-one correspondence with the chutes 220. For example, three chutes 220 are sequentially provided around the circumference of the first filter segment 211, and three guide rails 230 are sequentially provided around the circumference of the second filter segment 212.

[0046] At the same time, since the multiple filter segments are nested with each other, it is possible to avoid the problem of the guide rail 230 radially escaping to the outside of the sliding groove 220 between two adjacent filter segments.

[0047] In some embodiments, in any two adjacent filter segments, the first filter segment 211 is located on the outside of the second filter segment 212, and a slide groove 220 extending along the first direction is provided on the inner wall of the first filter segment 211, and a guide rail 230 extending along the first direction is provided on the outer wall of the second filter segment 212, and the guide rail 230 cooperates with the slide groove 220.

[0048] In some other embodiments, in any two adjacent filter segments, the first filter segment 211 is located on the outside of the second filter segment 212, and a guide rail 230 extending along the first direction is provided on the inner wall of the first filter segment 211, and a slide groove 220 extending along the first direction is provided on the outer wall of the second filter segment 212, and the guide rail 230 cooperates with the slide groove 220.

[0049] In some embodiments, the air purifier includes a locking structure 240 , and a locking structure 240 is provided between the first filter segment 211 and the second filter segment 212 . The locking structure 240 is used to lock the corresponding first filter segment 211 and the second filter segment 212 .

[0050] When the air purifier is idle, the housing assembly 100 and the filter 200 are retracted to reduce the height of the air purifier, and the locking structure 240 fixes any two adjacent filter segments. When the air purifier is in operation, the housing assembly 100 and the filter 200 are extended, and the locking structure 240 fixes any two adjacent filter segments.

[0051] Furthermore, the locking structure 240 includes an elastic boss 242 arranged on either the first filter segment 211 or the second filter segment 212 and a locking groove 241 opened on the other of the first filter segment 211 and the second filter segment 212, and the elastic boss 242 is used to bounce into the locking groove 241 along a second direction, and the second direction is perpendicular to the first direction.

[0052] In this embodiment, when the first filter segment 211 slides relative to the second filter segment 212 in the first direction, when the elastic protrusion 242 moves to the position of the locking groove 241, the elastic protrusion is elastically ejected into the locking groove 241, thereby locking the first filter segment 211 and the second filter segment 212 to a certain extent. The guide rail 230 cooperates with the slide groove 220 to ensure that the first filter segment 211 and the second filter segment 212 slide in the first direction, that is, to prevent the first filter segment 211 and the second filter segment 212 from circumferentially displacing. In other words, it can ensure that when the air purifier is expanded or compressed, the elastic protrusion 242 can cooperate with the locking groove 241 to relatively lock the first filter segment 211 and the second filter segment 212.

[0053] In some embodiments, a slide groove 220 is provided on the first filter segment 211, and a guide rail 230 is provided on the second filter segment 212; elastic protrusions 242 are respectively provided at both ends of the guide rail 230 along the first direction, and the elastic protrusions 242 protrude outward from the guide rail 230 along the second direction, and the slide groove 220 has a groove bottom, and locking grooves 241 are respectively provided at both ends of the groove bottom along the first direction.

[0054] In this embodiment, the second direction is the radial direction of the filter segment 210. The cross-section of the filter segment 210 along the height direction is circular. The elastic protrusion 242 is configured to expand and contract along the radial direction of the filter segment 210. When one filter segment slides relative to the other filter segment along the first direction, the elastic protrusion 242 slides into the locking groove 241. Under the action of the elastic force, the elastic protrusion 242 can be embedded in the locking groove 241, thereby locking the two adjacent filter segments to a certain extent.

[0055] For example, the first filter segment 211 is positioned outside the second filter segment 212. A chute 220 extending in height and recessed radially outward from the filter 200 is defined on the inner wall of the first filter segment 211. Locking grooves 241 are defined at both ends of the bottom of the chute 220 in the height direction. The locking grooves 241 are recessed radially outward from the filter 200. A guide rail 230 extending radially outward from the filter 200 is defined on the outer wall of the second filter segment 212. Elastic protrusions 242 extending radially outward from the filter 200 are also defined at both ends of the guide rail 230 in the height direction. When the air purifier is in a compressed state, the two elastic protrusions 242 on the second filter segment respectively engage with the two locking grooves 241 on the first filter segment 211, locking the first filter segment 211 and the second filter segment 212. When the air purifier is in the unfolded state, the elastic protrusion 242 on the bottom of the second filter segment is embedded in the locking groove 241 on the upper end of the first filter segment 211 to lock the first filter segment 211 and the second filter segment 212.

[0056] For example, the plurality of filter segments include a sequentially connected head filter segment 210a, at least one intermediate filter segment 210b, and a tail filter segment 210c. Each intermediate filter segment 210b has a slide groove 220 and a locking groove 241 disposed on its inner wall. Each intermediate filter segment 210b has a guide rail 230 and an elastic protrusion 242 disposed on its outer wall. The slide groove 220 and the guide rail 230 may be located at the same or different positions circumferentially around the filter segment 210, without limitation. The slide groove 220 and the locking groove 241 are disposed on the inner wall of the head filter segment 210a, while the guide rail 230 and the elastic protrusion 242 are disposed on the outer wall of the tail filter segment 210c.

[0057] In some other embodiments, multiple filter segments are arranged in sequence along the height direction, and a linear moving mechanism is provided between two adjacent filter segments. The linear moving mechanism is fixed on the first filter segment 211 of the two adjacent filter segments, and the moving end of the linear moving mechanism is connected to the second filter segment 212 of the two adjacent filter segments. When the linear moving mechanism moves, it can drive the second filter segment 212 to slide relative to the first filter segment 211.

[0058] Combine Figure 1 In some embodiments, the shell assembly 100 includes a shell 110 and a top cover 120 and a base 130 respectively arranged at both ends of the shell 110 along the first direction, the air inlet is opened on the shell 110, the air outlet is opened on the top cover 120, and the fan 300 is arranged at one end of the filter 200 close to the top cover 120.

[0059] In this embodiment, the air inlet is provided on the housing 110, and the air outlet is provided on the top cover 120. Together with the fan 300 located near one end of the top cover 120, this creates a bottom-up air flow path. Air enters through the evenly distributed air inlets on the housing 110, is filtered by the suction force of the fan 300, and is then discharged through the air outlet on the top cover 120. This reduces airflow circuitry and energy loss, significantly improving air circulation efficiency and reducing equipment operating energy consumption. Furthermore, the fan 300 is located near the end of the filter 200 near the top cover 120, providing a continuous and stable force for air to pass through the filter 200, ensuring sufficient contact between the air and the filter 200.

[0060] Specifically, the outer shell 110 has a cylindrical structure, and air inlets are evenly distributed around the circumference of the outer shell 110. Under the action of the fan 300, the air around the air purifier can be sucked into the filter 200, filtered by the cylindrical filter 200, and then discharged from the air outlet on the top cover 120.

[0061] Combine Figure 4Furthermore, the housing 110 includes a telescopic bracket 111 and a protective shell 112. The telescopic bracket 111 includes a plurality of bracket segments 1111 connected in sequence. Any two adjacent bracket segments 1111 are connected by sliding along a first direction. The protective shell 112 is arranged outside the telescopic bracket 111 in the expanded state.

[0062] In this embodiment, the protective shell 112 is disposed outside the telescopic bracket 111 in the expanded state, i.e., the protective shell 112 cannot be extended or retracted, thereby ensuring the aesthetic appearance of the protective shell 112. When the air purifier needs to be stored, the outer protective shell 112 can be removed, and the inner telescopic bracket 111 and filter 200 can be retracted.

[0063] Specifically, the telescopic method of the telescopic bracket 111 is the same as the telescopic method of the filter screen 200. Specifically, one of any two adjacent bracket segments 1111 is provided with a slide groove 220 extending along the first direction, and the other bracket segment 1111 is provided with a guide rail 230 extending along the first direction, and the guide rail 230 cooperates with the slide groove 220.

[0064] In addition, a locking structure 240 may be provided between any two adjacent bracket segments 1111. For example, a locking groove 241 may be provided on one of the bracket segments 1111, and an elastic protrusion 242 may be provided on the other bracket segment 1111, and the elastic protrusion 242 may be resiliently inserted into the locking groove 241. Of course, since the locking structure 240 is provided between two adjacent filter segments, when the air purifier is in the expanded state, the telescopic bracket 111 can be supported by the filter 200, and thus, there is no need to provide a locking structure 240 between two adjacent filter segments.

[0065] Alternatively, there is no need to provide a locking structure 240 between two adjacent filter segments. By providing a locking structure 240 between two adjacent bracket segments 1111, when the air purifier is in the expanded state, the filter 200 is supported by the telescopic bracket 111.

[0066] In some embodiments, the plurality of bracket segments 1111 include a head bracket segment 1111a, a middle bracket segment 1111b, and a tail bracket segment 1111c, which are connected in sequence. The head bracket segment 1111a is fixedly connected to the top cover 120, and the tail bracket segment 1111c is fixedly connected to the base 130.

[0067] One end of the protective shell 112 is fixedly connected to the top cover 120 , and the other end is fixedly connected to the base 130 .

[0068] In this embodiment, the top cover 120, the base 130 are fixedly connected to the head end bracket segment 1111a and the tail end bracket segment 1111c to form a stable frame structure. This connection method can evenly disperse the external forces generated during the operation of the air purifier, such as fluid pressure, vibration force, etc., to avoid deformation or damage caused by local stress concentration. The two ends of the protective shell 112 are fixedly connected to the top cover 120 and the base 130 respectively, forming a completely enclosed protective space, which effectively isolates the internal filter 200 and the bracket structure from external dust, debris, corrosive gases, etc., and provides a good operating environment for the air purifier.

[0069] Combine Figure 5 In some other embodiments, the shell 110 includes a plurality of shell segments 140 connected in sequence, and any two adjacent shell segments 140 are slidably connected along a first direction. One end of the filter 200 along the first direction is connected to the shell 110 through the top cover 120, and the other end of the filter 200 along the first direction is connected to the shell 110 through the base 130.

[0070] Specifically, the multiple shell segments 140 are a head end shell segment 140a, at least one intermediate shell segment 140b and a tail end shell segment 140c connected in sequence. The head end shell segment 140a and the head end filter segment 210a are fixedly connected to the base 130 at the same time, and the tail end shell segment 140c and the tail end filter segment 210c are fixedly connected to the top cover 120 at the same time. When the top cover 120 is compressed along the first direction, the top cover 120 can simultaneously squeeze the tail end shell segment 140c and the tail end filter segment 210c, so that the multiple shell segments 140 and the multiple filter segments shrink at the same time.

[0071] For example, the telescopic method of the shell is the same as the telescopic method of the filter 200. Specifically, one of any two adjacent shell segments 140 is provided with a slide groove 220 extending along the first direction, and the other shell segment 140 is provided with a guide rail 230 extending along the first direction, and the guide rail 230 cooperates with the slide groove 220.

[0072] In addition, a locking structure 240 may be provided between any two adjacent housing segments 140. For example, a locking groove 241 may be provided on one of the housing segments 140, and an elastic protrusion 242 may be provided on the other housing segment 140. The elastic protrusion 242 may be resiliently inserted into the locking groove 241. Of course, since a locking structure 240 is provided between two adjacent filter segments, when the air purifier is in the deployed state, the outer shell can be supported by the filter 200. Thus, there is no need to provide a locking structure 240 between two adjacent housing segments 140.

[0073] Alternatively, there is no need to provide a locking structure 240 between two adjacent filter segments. By providing a locking structure 240 between two adjacent shell segments 140, when the air purifier is in the expanded state, the filter 200 is supported by the shell.

[0074] In some embodiments, the air purifier includes an electric push rod, which is disposed in the filter 200 , fixed to the base 130 , and a pushing end of the electric push rod is fixedly connected to the top cover 120 .

[0075] In this embodiment, the electric push rod is fixed to the base 130, and the pushing end of the electric push rod is fixedly connected to the top cover 120. The top cover 120 is also connected to the tail filter segment 210c and the tail bracket segment 1111c or the tail housing segment 140c. When the electric push rod is extended, it can drive the filter 200 and the housing assembly 100 to be in an expanded state to facilitate the normal operation of the air purifier. At the same time, it can also support the filter 200 and the housing assembly 100, thereby improving the structural stability of the entire air purifier. When not in use or when temporary storage is required, the electric push rod is controlled to retract, and the electric push rod drives the filter 200 and the housing assembly 100 to quickly retract, so that the air purifier can be stored in a small size.

[0076] Furthermore, the length of the electric push rod can be adjusted to correspond to the power of the fan 300. When the fan 300 is running at high power, the electric push rod extends to its maximum length, allowing the housing assembly and the filter to be in their most extended state. When the power of the fan 300 is reduced, the electric push rod shortens accordingly, allowing the housing assembly and the filter to shorten simultaneously with the electric push rod. This allows the size of the air purifier to be correlated with its power, allowing it to adapt to different usage environments.

[0077] In some embodiments, the filter 200 includes, arranged in order from the outside inward, a pre-filter layer, a high-efficiency air filter layer, an activated carbon adsorption layer, an antibacterial layer, and a special functional layer. The pre-filter layer can be made of nylon mesh, non-woven fabric, or wire mesh. It is used to filter larger airborne particles such as dust, hair, pet dander, and pollen, extending the service life of subsequent filter layers and reducing clogging of the precision filter layer by large particles. The high-efficiency air filter layer can be made of ultra-fine fiber materials such as high-density polypropylene or glass fiber, and the folding process increases the filtration area. The high-efficiency air filter layer functions to filter particles with a diameter greater than or equal to 0.3 microns (such as PM2.5, bacteria, viruses, and allergens), and also has a certain interception effect on nano-particles (such as some viruses and smoke particles). The activated carbon adsorption layer is made of activated carbon granules or activated carbon fibers and functions to adsorb harmful gases (such as formaldehyde, benzene, TVOC, and other decoration pollutants), odors (such as smoke and pet odors), and some volatile organic compounds (VOCs). The antibacterial layer is made of antibacterial coatings (such as silver ions, photocatalysts), antibacterial non-woven fabrics, or antibacterial resins. It inhibits the growth of bacteria and mold on the filter layer, preventing the filter from becoming a source of contamination and secondary contamination. Special functional layers include formaldehyde decomposition layers, negative ion generation layers, and electrostatic dust collection layers to meet the needs of filtration in special environments.

[0078] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An air purifier, characterized in that: The air purifier comprises: A housing assembly, the housing assembly being capable of extending and retracting along a first direction and having an air inlet and an air outlet; A filter screen is disposed in the housing assembly, the filter screen comprising a plurality of filter screen segments connected in sequence, and any two adjacent filter screen segments are connected by sliding along a first direction; The fan is arranged in the housing assembly and is used to allow external air to enter from the air inlet and pass through the filter segment to be blown out from the air outlet.

2. The air purifier according to claim 1, characterized in that The cross section of each filter mesh segment along the first direction is a closed geometric figure, and the plurality of filter mesh segments are sequentially arranged from the outside to the inside.

3. The air purifier according to claim 1, characterized in that Any two adjacent filter segments are respectively the first filter segment and the second filter segment. The first filter segment is provided with a slide extending along the first direction, and the second filter segment is provided with a guide rail extending along the first direction, and the guide rail cooperates with the slide.

4. The air purifier according to claim 3, characterized in that The air purifier includes a locking structure, which is provided between the first filter segment and the second filter segment, and is used to lock the corresponding first filter segment and the second filter segment.

5. The air purifier according to claim 4, characterized in that The locking structure includes an elastic protrusion arranged on any one of the first filter segment and the second filter segment and a locking groove opened on the other of the first filter segment and the second filter segment, and the elastic protrusion is used to bounce into the locking groove along a second direction, and the second direction is perpendicular to the first direction.

6. The air purifier according to claim 5, characterized in that The first filter segment is provided with a slide groove, and the second filter segment is provided with a guide rail; The guide rail is provided with elastic protrusions at both ends along the first direction. The elastic protrusions protrude outward from the guide rail along the second direction. The sliding groove has a groove bottom. The groove bottom is provided with locking grooves at both ends along the first direction.

7. The air purifier according to claim 1, characterized in that The shell assembly includes an outer shell and a top cover and a base respectively arranged at both ends of the outer shell along a first direction. The air inlet is opened on the outer shell, the air outlet is opened on the top cover, and the fan is arranged on one end of the filter screen close to the top cover.

8. The air purifier according to claim 7, characterized in that The housing assembly includes a telescopic bracket and a protective shell. The telescopic bracket includes a plurality of bracket segments connected in sequence. Any two adjacent bracket segments are connected by sliding along a first direction. The protective shell is arranged around the telescopic bracket in the expanded state.

9. The air purifier according to claim 8, characterized in that The plurality of bracket segments are a head bracket segment, a middle bracket segment and a tail bracket segment connected in sequence, the head bracket segment is fixedly connected to the top cover, and the tail bracket segment is fixedly connected to the base; One end of the protective shell is fixedly connected to the top cover, and the other end is fixedly connected to the base.

10. The air purifier according to claim 7, characterized in that The shell includes a plurality of shell segments connected in sequence, and any two adjacent shell segments are slidably connected along a first direction. One end of the filter along the first direction is connected to the shell through the top cover, and the other end of the filter along the first direction is connected to the shell through the base.

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