Wind turbine module and air purifier

Abstract

This application provides a wind turbine module and an air purifier, including a chassis, an upper plate, and an impeller. The impeller includes multiple blades located within the air cavity. The multiple blades are distributed circumferentially along the chassis and connect the chassis and the upper plate. The blades are backward-curved blades, with the first arc segment close to the axis. The large curvature surface smoothly receives the axial air intake, reducing airflow impact and eddies, and lowering intake noise. Furthermore, the first arc segment, located in the flow channel near the air inlet, provides a stronger "throwing" effect, allowing the airflow to gain higher energy and thus increasing pressure. The second arc segment is relatively gentle, making the channel between the blades wider, guiding the airflow more smoothly, and reducing airflow separation between the blades, thereby significantly reducing noise.

Description

Technical Field

[0001] This application relates to the field of air purification technology, and in particular to a fan module and an air purifier. Background Technology

[0002] Air purifiers are air purification devices that rely on a fan and duct system to circulate air and filter and decompose pollutants such as formaldehyde, odors, bacteria, and viruses through purification modules such as activated carbon and electrostatic adsorption, effectively improving indoor air quality.

[0003] The fan is a key performance component of an air purifier. In related technologies, the fan in an air purifier is prone to airflow loss and generates significant noise during operation. Summary of the Invention

[0004] This application provides an air purifier that solves the problem in related technologies where airflow is easily lost and significant noise is generated during the rotation of the fan.

[0005] In a first aspect, embodiments of this application provide a wind turbine module, including:

[0006] Chassis; An upper plate, spaced axially from the chassis, defines an air outlet cavity between the upper plate and the chassis. An air inlet communicating with the air outlet cavity is formed on the side of the upper plate facing away from the chassis. An air outlet communicating with the air outlet cavity is formed between the upper plate and the chassis. An impeller includes multiple blades located within the air chamber. The multiple blades are distributed circumferentially along the chassis and connect the chassis and the upper plate. The blades are backward-curved blades. In the cross-section of the wind turbine module, the blade includes a first arc segment and a second arc segment connected to each other. In the radial direction of the chassis, the first arc segment is closer to the axis of the chassis than the second arc segment, and the curvature of the first arc segment is greater than the curvature of the second arc segment.

[0007] In some embodiments, the impeller outer diameter is D0. The radius of the first arc segment is R1, where R1 / D0 satisfies: 0.36≤R1 / D0≤0.53; And / or, the radius of the second arc segment is R2, where R2 / D0 satisfies: 0.63≤R2 / D0≤0.81.

[0008] In some embodiments, the impeller outer diameter is D0. The inner diameter of the impeller is D1, where D1 / D0 satisfies: 0.52≤D1 / D0≤0.71; And / or, one end of each of the first arc segments connecting to the second arc segment is distributed on a first virtual circle, the diameter of the first virtual circle being D2, wherein D2 / D0 satisfies: 0.76≤D2 / D0≤0.93; And / or, the diameter of the air inlet is D3, wherein D3 / D0 satisfies: 0.76≤D3 / D0≤0.92; And / or, the inner wall surface of the upper plate is an arc surface protruding towards the wind cavity, and in the cross-section of the wind turbine module, the arc surface is a third arc segment with a radius of D4, wherein D4 / D0 satisfies: 0.09≤D4 / D0≤0.17.

[0009] In some embodiments, the blade inlet mounting angle B 1a Satisfies: 19.8°≤B 1a ≤37.6°; And / or, the blade outlet installation angle B 2a Satisfies: 23.5°≤B 2a ≤51.8°.

[0010] In some embodiments, the wind turbine module has a dimension H1 in the axial direction of the chassis, and the upper plate has a dimension H2 in the axial direction of the chassis, wherein H2 / H1 satisfies: 0.18≤H2 / H1≤0.41.

[0011] Secondly, embodiments of this application provide an air purifier, including at least two fan modules, wherein the at least two fan modules are arranged vertically, and the fan modules include: Two volutes cooperate to define a connected impeller cavity and two diffuser cavities, and the side of each diffuser cavity away from the impeller cavity forms a first air outlet; The wind turbine module described above is housed within the wind turbine cavity. The two volutes are spaced apart circumferentially along the wind turbine module so that the airflow passes through the wind turbine module sequentially and is then ejected from the first air outlet.

[0012] In some embodiments, the inner wall of the volute is provided with a volute tongue, which includes a windward surface, a volute tongue surface and a diffuser surface connected in sequence. The windward surface is configured as part of the cavity wall of the impeller cavity, and the diffuser surface is configured as part of the cavity wall of the diffuser cavity.

[0013] In some embodiments, in the cross-section of the wind turbine module, The angle Y1 between the line connecting the two ends of the diffuser surface and the axis of the first air outlet satisfies: 54.3°≤Y1≤76.8°; And / or, the volute tongue surface is an arc segment, and the angle Y2 between the line connecting the center of the arc segment and the center of the impeller module and the axis of the first air outlet satisfies: 31.6°≤Y2≤62.3°.

[0014] In some embodiments, the outer diameter of the impeller in the wind turbine module is D0. The volute tongue surface is an arc segment, and the radius of the arc segment is r2, which satisfies: 0.021≤r2 / D0≤0.093; And / or, the clearance L between the volute tongue and the impeller of the wind turbine module satisfies: 0.083≤L / D0≤0.163.

[0015] In some embodiments, the outer diameter of the impeller in the wind turbine module is D0. In the cross-section of the wind turbine module, the windward surface includes a first arc-shaped segment and a second arc-shaped segment. The first arc-shaped segment is closer to the volute tongue surface than the second arc-shaped segment. The radius r3 of the first arc segment satisfies: 1.08 ≤ r3 / D0 ≤ 1.42; And / or, the central angle Y3 of the first arc segment satisfies: 6.32°≤Y3≤13.6°; And / or, the radius r4 of the second arc segment satisfies: 0.438≤r4 / D0≤0.782; And / or, the central angle Y4 of the first arc segment satisfies: 21.3°≤Y4≤46.7°.

[0016] In some embodiments, the outer diameter of the impeller in the wind turbine module is D0. The outlet opening A of the volute satisfies: 0.063≤A / D0≤0.196; And / or, in the cross-section of the wind turbine module, the size W1 of the first air outlet satisfies: 1.162≤W1 / D0≤1.385, and the width W2 of the throat of the volute tongue satisfies: 0.685≤W2 / W1≤0.923.

[0017] In some embodiments, the air purifier further includes a housing, and the fan module is disposed within the housing; The fan module has a first air outlet on each of its opposite sides. The housing includes two side shells, which are respectively disposed at the first air outlet. A side air outlet is provided on each side shell at the position corresponding to the first air outlet.

[0018] In some embodiments, a sound-absorbing cavity is formed between the outer wall of the fan module and the inner wall of the housing, and a sound-absorbing part is provided in the sound-absorbing cavity. The volute is provided with a sound-absorbing hole that connects the sound-absorbing cavity, the impeller cavity, and the diffuser cavity.

[0019] In some embodiments, the sound-absorbing part includes a plurality of sound-absorbing panels spaced apart along the arrangement direction of the two side shells, the plurality of sound-absorbing panels being staggered and connected to the housing.

[0020] In some embodiments, the housing includes a filter element support located on the air inlet side of the fan module, the filter element support forming a mounting cavity and a side mounting port communicating with the mounting cavity, and the air purifier further includes a filter element, the filter element being detachably mounted to the mounting cavity via the side mounting port.

[0021] In some embodiments, the air purifier further includes an air intake grille disposed on the side of the filter element bracket away from the fan module. The air intake grille is arched in the direction of air intake to form a raised portion. A mesh cover is formed on the side of the filter element bracket facing the fan module, and the mesh cover is located at the air intake of the fan module.

[0022] In some embodiments, in the cross-section of the wind turbine module, the side of the raised portion facing away from the wind turbine module is a fourth arc segment. The outer diameter of the impeller in the wind turbine module is D0, and the radius of the fourth arc segment is R. q Satisfies: 1.324≤R q / D0≤1.831; And / or, the central angle Y of the fourth arc segment q Satisfies: 34.2°≤Y q ≤68.3°.

[0023] In some embodiments, in the cross-section of the wind turbine module, the side of the mesh cover facing away from the wind turbine module is a fifth arc segment. The outer diameter of the impeller in the wind turbine module is D0, and the radius of the fifth arc segment is R. h Satisfies: 0.408≤R h / D0≤0.782; And / or, the central angle Y of the fifth arc segment h Satisfies: 72.3°≤Y h ≤93.5°.

[0024] In some embodiments, the outer diameter of the impeller in the wind turbine module is D0, and in the cross-section of the wind turbine module, The straight-line distance D between the two ends of the raised portion facing the wind turbine module L Satisfy: 1.02≤D L / D0≤1.26; And / or, the straight-line distance D between the two ends of the side of the mesh facing the wind turbine module rSatisfies: 0.632≤D r / D0≤0.912.

[0025] In some embodiments, the outer diameter of the impeller in the wind turbine module is D0, along the axial direction of the wind turbine module. The maximum distance H between the side of the raised portion away from the mesh cover and the side of the mesh cover away from the raised portion is... L Satisfies: 0.632≤H L / D0≤0.856; And / or, the distance H between the mesh cover and the wind turbine module r Satisfies: 0.037≤H r / D0≤0.125.

[0026] The impeller module and air purifier based on the embodiments of this application include a chassis, an upper plate, and an impeller. The impeller includes multiple blades located within the air cavity. The multiple blades are distributed circumferentially along the chassis and connect the chassis and the upper plate. The blades are backward-curved blades. The first arc segment is close to the axis, and the large curvature surface smoothly receives the axial air intake, reducing airflow impact and eddies, and lowering intake noise. Moreover, the first arc segment is in the flow channel near the air inlet, which, through a stronger "throwing out" effect, allows the airflow to obtain higher energy, thereby increasing the pressure. The second arc segment is relatively gentle, making the channel between the blades wider, which makes the airflow guidance smoother and reduces the airflow separation between the blades, thereby also significantly reducing noise. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the air purifier provided in the embodiments of this application; Figure 2 This application provides a schematic diagram of the air purifier from another perspective in its embodiments; Figure 3 This is an exploded structural diagram of an air purifier provided in an embodiment of this application; Figure 4 This is a cross-sectional structural diagram of the air purifier provided in the embodiments of this application; Figure 5 yes Figure 4 An enlarged schematic diagram of the structure at point A in the shown structure; Figure 6 This is a schematic diagram of the front structure of the air purifier provided in the embodiment of this application; Figure 7 This is a schematic diagram of the inner side of the panel provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the light-transmitting element provided in the embodiments of this application; Figure 9This is a structural schematic diagram of two adjacent light-transmitting components in an assembled state, provided in an embodiment of this application; Figure 10 This is a schematic diagram of the structure of two adjacent light-shielding components assembled on a panel according to an embodiment of this application; Figure 11 This is a schematic diagram of the structure of the light-shielding component provided in the embodiments of this application; Figure 12 This is a structural diagram of the LED strip and wire connection state provided in the embodiments of this application; Figure 13 This is a schematic diagram of the air purifier in the disassembled state of the grille assembly provided in the embodiments of this application; Figure 14 This is a schematic diagram of the air purifier in the assembled state of the grille assembly provided in the embodiments of this application; Figure 15 This is a schematic diagram of the internal front structure of the air purifier provided in the embodiments of this application; Figure 16 yes Figure 15 An enlarged schematic diagram of the structure at point B in the shown structure; Figure 17 yes Figure 15 A schematic diagram of the grating assembly in its disassembled state is shown in the diagram. Figure 18 yes Figure 17 An enlarged schematic diagram of the structure at point C in the diagram; Figure 19 yes Figure 17 An enlarged schematic diagram of the structure at point D in the shown structure; Figure 20 This is a partial structural diagram of the front interior of the air purifier provided in the embodiments of this application; Figure 21 yes Figure 20 A schematic cross-sectional view of the structure at point AA in the structure shown. Figure 22 yes Figure 21 An enlarged schematic diagram of the structure at point E in the diagram; Figure 23 yes Figure 14 A schematic diagram of the air purifier from another perspective; Figure 24 yes Figure 23 An enlarged schematic diagram of the structure at point F in the structure shown; Figure 25 This is a schematic diagram of the structure of the grille assembly provided in the embodiments of this application; Figure 26 yes Figure 25 An enlarged schematic diagram of the structure at point G in the diagram; Figure 27yes Figure 25 An enlarged schematic diagram of the structure at point H in the structure shown; Figure 28 This is a schematic diagram of the filter element and filter element support in a disassembled state, as provided in the embodiments of this application. Figure 29 yes Figure 28 An enlarged schematic diagram of the structure at point I in the structure shown; Figure 30 This is a three-dimensional structural diagram of the triggering mechanism provided in this application embodiment with the toggle member in the first position; Figure 31 This is a three-dimensional structural schematic diagram of the triggering mechanism provided in this application embodiment, showing the toggle member in the first position from another perspective. Figure 32 This is a three-dimensional structural diagram of the triggering mechanism provided in this application embodiment with the toggle member in the second position; Figure 33 This is a schematic diagram of the triggering mechanism provided in this application embodiment with the toggle member in the first position; Figure 34 This is a schematic diagram of the triggering mechanism provided in this application embodiment with the toggle member in the second position; Figure 35 yes Figure 28 A schematic diagram of the filter element support structure shown; Figure 36 yes Figure 35 An enlarged schematic diagram of the structure at point J in the shown structure; Figure 37 This is a schematic diagram of the filter element and filter element support in their installed state according to an embodiment of this application; Figure 38 yes Figure 37 An enlarged schematic diagram of the structure at point K in the structure shown; Figure 39 This is a schematic diagram of the filter element and filter element support in the installed state provided in the embodiment of this application; Figure 40 yes Figure 39 An enlarged schematic diagram of the structure at point L in the structure shown; Figure 41 This is a structural schematic diagram of the filter element and filter element support in the installed state provided in the embodiment of this application; Figure 42 yes Figure 41 An enlarged schematic diagram of the structure at point M in the structure shown; Figure 43 This is a schematic diagram of the triggering mechanism provided in the embodiments of this application; Figure 44 yes Figure 43A schematic cross-sectional view of the structure at point BB in the structure shown. Figure 45 This is an exploded structural diagram of the filter element provided in the embodiments of this application; Figure 46 This is an exploded structural diagram of the filter element provided in an embodiment of this application from another perspective; Figure 47 This is a front structural diagram of the air purifier provided in the embodiments of this application; Figure 48 yes Figure 47 A cross-sectional schematic diagram of the structure at point CC in the structure shown. Figure 49 yes Figure 48 A schematic cross-sectional view of the structure at point DD in the structure shown. Figure 50 This is a schematic diagram of the wind turbine module provided in the embodiments of this application; Figure 51 This is a cross-sectional structural diagram of the wind turbine module provided in the embodiments of this application; Figure 52 This is a cross-sectional structural diagram of the wind turbine module provided in the embodiments of this application; Figure 53 This is a cross-sectional structural diagram of the wind turbine module provided in the embodiments of this application; Figure 54 This is a partial structural schematic diagram of the cross-section of the wind turbine assembly provided in the embodiments of this application; Figure 55 This is a partial structural schematic diagram of the cross-section of the wind turbine assembly provided in the embodiments of this application; Figure 56 This is a structural schematic diagram of the wind turbine module, mesh cover, and air intake grille provided in the embodiments of this application; Figure 57 This is a schematic diagram of the wind turbine module and the mesh cover provided in the embodiments of this application; Figure 58 This is a schematic diagram of the sound-absorbing part provided in an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures: 1. Air purifier; 2. Electrical wire; 100. Housing; 100a. Sound absorption cavity; 100b. Receiving cavity; 100c. Air inlet; 100d. Air outlet; 110. Side shell; 110a. Side air outlet; 111. Second grille section; 120. Filter element bracket; 120a. Mounting cavity; 120a1. Sub-mounting cavity; 120b. Side mounting port; 120c. Slide groove; 121. Mesh cover; 121a. Fifth arc segment; 122. Body; 123. Divider; 123a. Receiving cavity; 124. First side wall; 1241. Snap-fit ​​section; 125. Second side wall; 130. End plate; 130a. Top air outlet; 131. First grille section; 140. Inner flange; 150. Panel; 160. Air duct bracket; 170. Fan bracket; 180. Rear shell; 190. Bottom cover; 200, Light-emitting component; 200a, Lamp cavity; 210, Light shield; 211, Wire frame; 211a, Wire trough; 212, Lamp holder; 212a, Lamp trough; 212a1, Sub-trough; 220, Light-emitting component; 221, Light strip; 221a, Semi-circular area; 230, Light-transmitting component; 230a, Light-emitting surface; 240, Anti-glare rib; 300, Grille assembly; 300a, Raised portion; 310, Air intake grille; 310a, Clip groove; 310b, Fourth arc segment; 311, Grille body; 312, First side frame; 3121, First side upright plate; 3122, Second side upright plate; 3122a, Second guide surface; 313, Second side frame; 313a, Slot; 313b, Insert; 3131, Elastic protrusion; 3132, Third side upright plate; 3133, Fourth side upright plate; 314, Fifth side upright plate; 320, Filter screen; 320a, Recess; 400, Filter element; 410, Trigger protrusion; 420, Main body; 420a, Snap-fit ​​groove; 421, Anti-reverse spring clip; 430, Cover plate; 431, Clip position; 432, Snap-fit ​​part; 433, Sliding clip; 500. Fan assembly; 510. Fan module; 511. Volute; 511a. Impeller cavity; 511b. Diffuser cavity; 511c. First air outlet; 511d. Second air outlet; 511e. Sound absorption hole; 5111. Volute tongue; 5112. Windward surface; 5112a. First arc segment; 5112b. Second arc segment; 5113. Volute tongue surface; 5114. Diffuser surface; 512. Fan module; 512a. Air cavity; 512b. Air outlet; 5121. Chassis; 5122. Upper plate; 5122a. Air inlet; 5122b. Third arc segment; 5123. Impeller; 51231. Blade; 5123a. First arc segment; 5123b. Second arc segment; 600, Triggering mechanism; 610, Bracket; 611, Limiting part; 620, First triggering module; 621, Movable block; 6211, First movable block; 6212, Second movable block; 6212a, Placement cavity; 6213, Guide part; 6214, Guide mating part; 622, First switching element; 623, Elastic element; 630, Second triggering module; 640, Actuating element; 640a, Clearance groove; 700. Sound-absorbing part; 710. Sound-absorbing panel; 800, abutting part; 810, first abutting part; 810a, first guide surface; 820, second abutting part; 821, baffle. Detailed Implementation

[0029] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0030] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0031] This application provides an air purifier 1, please refer to... Figures 1 to 3 It includes a housing 100, a grille assembly 300, a filter element 400, and a fan assembly 500, wherein the grille assembly 300, the filter element 400, and the fan assembly 500 are arranged sequentially inside the housing 100 along the air inlet direction.

[0032] The housing 100 serves as the overall support, protective carrier, and exterior component of the air purifier 1. It is used to house and fix the grille assembly 300, filter element 400, and fan assembly 500, while defining regular air intake and exhaust airflow paths to reduce airflow leakage and turbulence interference, and to ensure internal structural stability and appearance integrity.

[0033] The grille assembly 300 is located on the side of the filter element 400 away from the fan assembly 500. That is, the grille assembly 300 is located at the upstream end along the air intake direction. It undertakes the primary pretreatment and protection functions, and can block hair, fibers, large dust particles and foreign objects in the air from entering the machine body, thus protecting the subsequent filter element 400 and fan assembly 500.

[0034] Filter 400 is the core purification component of air purifier 1. It deeply purifies the air after pretreatment by grille assembly 300, filtering and decomposing pollutants such as PM2.5, formaldehyde, odors, bacteria, and viruses to achieve deep air purification.

[0035] The fan assembly 500 provides power to enable airflow circulation throughout the machine.

[0036] The air purifier 1 also includes a light-emitting component 200, a grille component 300 that can prevent dust and block foreign objects, and a light-emitting component 200 that can provide display light. The brightness or different colors of the light can indicate the current working status of the air purifier 1 or the current air quality.

[0037] The housing 100 has an air vent 100d, the grille assembly 300 is disposed inside the housing 100 and covers the air vent 100d, and the light-emitting assembly 200 is disposed inside the housing 100. The light emitted by the light-emitting assembly 200 can illuminate at least part of the grille assembly 300 exposed in the air vent 100d.

[0038] Thus, the part of the grille assembly 300 exposed at the air vent 100d directly serves as the irradiation and reflection surface for the light from the light-emitting component 200. The grille assembly 300 has a multi-ribbed, discontinuous, and hollow structure, so that the light is diffused, scattered, and segmented multiple times on the grille, making the emitted light naturally soft, without direct glare.

[0039] Since the grille assembly 300 can combine functions such as airflow guidance, protection, reflection, and soft light, it can serve multiple purposes, reduce the number of parts, simplify assembly, and lower costs. Furthermore, since it can achieve eye-friendly light output without the need for an additional soft light structure, it does not occupy independent space, which is conducive to the miniaturization and compact design of the entire air purifier 1.

[0040] In this embodiment, the air vent 100d can be either an air inlet 100c or a heat dissipation vent. Correspondingly, the grille assembly 300 can be located at the air inlet 100c, guiding external air into the air purifier 1, filtering it through the filter element 400, and then expelling it to achieve air circulation and purification. It also serves to prevent dust, block foreign objects, and protect the internal air duct. Alternatively, it can be located at the heat dissipation vent, enabling convection exchange between the internal heat source and the external air, dissipating heat from internal electrical components such as the control board and power supply, and ensuring the stability and safety of the entire unit. In this embodiment, the air vent 100d is preferably an air inlet 100c.

[0041] That is, the housing 100 may include a panel 150, and the air vent 100d includes an air inlet 100c disposed on the panel 150. The panel 150 is the front and conspicuous area of ​​the entire air purifier 1. Thus, the light is integrated here, and the air quality and working status indicators are more intuitive and eye-catching.

[0042] In some embodiments, please refer to Figure 4 as well as Figure 5 The housing 100 has an inner flange 140 at the air vent 100d. The light-emitting component 200 is fitted onto the inner flange 140, that is, the light-emitting component 200 is located on the outer periphery of the air vent 100d. The inner flange 140 provides precise installation positioning for the light-emitting component 200. The light-emitting component 200 is fitted and assembled, which is convenient to install and reliable in positioning. In addition, the inner flange 140 can also form circumferential limit and support for the light-emitting component 200, making the structure stable and not easy to loosen or shift.

[0043] Since the light-emitting component 200 is located on the outer periphery of the air vent 100d, the light emitted by the light-emitting component 200 enters the air vent 100c through the side of the air vent 100d. The light-emitting component 200 is arranged on the outer periphery of the air vent 100d, rather than inside the air vent 100d or the air duct. It does not occupy the effective flow area of ​​the air vent 100d, that is, it will not block the front air intake section of the air vent 100d, and will not increase wind resistance or reduce the air intake volume.

[0044] The light is incident from the side, rather than shining directly outward. The light first hits the grille assembly 300, and then shines outward through the diffuse reflection of the grille assembly 300. There is no direct light or bright spots, and users can look directly at the air vent without glare. The anti-glare effect is more stable.

[0045] In one embodiment, please refer to Figure 6 The area of ​​the grille assembly 300 illuminated by the light-emitting assembly 200 is in the shape of a ring. The ring-shaped illuminated area is continuously distributed along the circumference of the air vent 100d. The light has no breaks or unevenness, and can form a complete and soft light band, making the visual cues of air quality and working status clearer and more recognizable.

[0046] Since the area of ​​the grille assembly 300 illuminated by the light-emitting component 200 is in a ring shape, that is, the center of the grille assembly 300 is not illuminated, or the brightness is extremely weak, the peripheral contour light-emitting rather than the whole surface light-emitting is adopted. The light-emitting area is moderate and there are no large areas of strong light. Combined with the diffuse reflection of the grille assembly 300 itself, the light is softer, and the glare is further eliminated from the light-emitting form.

[0047] In another embodiment of this application, the grille assembly 300 is partially arched toward the air vent 100d to form a raised portion 300a, and the light emitted by the light-emitting component 200 can illuminate the raised portion 300a exposed around the air vent 100d.

[0048] The raised portion 300a has an arc-shaped or sloping transition surface on its periphery (preferably an arc-shaped transition surface in this embodiment). Light from the light-emitting component 200 entering from the side forms a large area and multi-angle diffuse reflection in this area, and the light is fully softened and scattered, which further enhances the soft light emission from the structure, thereby further avoiding glare.

[0049] The raised portion 300a guides and gathers the light, allowing the light to accurately illuminate the surrounding area and form a contour-like ring light band. This results in high light efficiency, a clear and uniform status display, and minimizes uneven brightness.

[0050] The raised portion 300a protrudes outwards towards the air vent 100d, without extending into the air purifier 1, thus not encroaching on the air duct or compressing the air intake cross-section, ensuring the integrity of the air intake area and not reducing the air intake volume or purification efficiency. Furthermore, the curved surface of the raised portion 300a guides and straightens the air intake, allowing the airflow to enter the air vent 100c more smoothly, reducing airflow impact, turbulence, and noise, improving air intake smoothness, and reducing wind resistance loss.

[0051] Following on from the above, please refer back to the previous section. Figure 5 The light-emitting component 200 includes a light-shielding component 210, a light-emitting component 220, and a light-transmitting component 230.

[0052] The light-shielding component 210 is used to block the light transmitted from the light-emitting component 220 to the outside of the housing 100, that is, to block and block the direct light and stray light transmitted directly from the light-emitting component 220 to the outside of the housing 100, to constrain the direction of light propagation, and to prevent light from leaking out from non-designed paths.

[0053] The light-transmitting element 230 has a light-emitting surface 230a. The light emitted by the light-emitting element 220 passes through the light-emitting surface 230a and is directed toward the grid assembly 300. That is, the light-transmitting element 230 has a regular light-emitting surface 230a, which conducts, homogenizes and directs the light emitted by the light-emitting element 220, so that the light is directed toward the grid assembly 300 in a stable and uniform form.

[0054] Among them, the material of the light-blocking component 210 can be black polycarbonate, black polypropylene or other light-blocking materials, and the material of the light-transmitting component 230 can be transparent polycarbonate, acrylic or other light-transmitting materials.

[0055] In the embodiments of this application, the light-shielding member 210 can be connected to the housing 100, or the light-transmitting member 230 can be connected to the housing 100, or both the light-shielding member 210 and the light-transmitting member 230 can be connected to the housing 100, or the light-shielding member 210 can be connected to the housing 100 and the light-transmitting member 230 can be connected to the light-shielding member 210, or the light-transmitting member 230 can be connected to the housing 100 and the light-shielding member 210 can be connected to the light-transmitting member 230. No limitation is made here.

[0056] The light-emitting element 220 can be connected to the light-shielding element 210, or to the light-transmitting element 230, or to both the light-shielding element 210 and the light-transmitting element 230 at the same time; there are no restrictions on this.

[0057] Further, please refer to Figure 5 The light-emitting surface 230a extends away from the center line of the air vent 100d into the housing 100 via the air vent 100d. That is, along the air inlet direction, the entire light-emitting surface 230a presents an outward expansion posture, so that the light from the light-emitting element 220 is obliquely directed inward toward the grille assembly 300, instead of directly hitting the outside of the air vent 100d. This prevents direct light leakage from the path, achieving indirect soft light indication and reminder, and avoiding glare.

[0058] Furthermore, the light-emitting surface 230a adopts an outward-expanding extension structure, which can significantly expand the light projection range and form a large-area illumination area. The light can fully and evenly illuminate the area of ​​the grille assembly 300 exposed in the air vent 100d, so that the light reflected by the grille assembly 300 presents a uniform and soft surface light emission effect.

[0059] In another embodiment of this application, please refer to Figures 7 to 9 The light-emitting surface 230a is arranged around the air vent 100d. In this way, the light emitted by the light-emitting element 220 can form a continuous and uniform ring light path along the circumference of the air vent 100d. When the area of ​​the grille assembly 300 exposed in the air vent 100d is illuminated, a clear halo area can be formed in the peripheral area of ​​the grille assembly 300 exposed in the air vent 100d. The halo area is complete and has no dark areas, resulting in a more regular visual effect.

[0060] Following on from the above, please refer back to the previous section. Figure 5 The light-transmitting element 230 and the light-shielding element 210 form a lamp cavity 200a, and the light-emitting element 220 is located inside the lamp cavity 200a.

[0061] The light-transmitting element 230 and the light-shielding element 210 together form an independent closed lamp cavity 200a. The light-emitting element 220 is confined within the lamp cavity 200a. Light can only be emitted from the light-emitting surface 230a of the preset light-transmitting element 230, completely blocking the random scattering of light into the interior of the housing 100 and the gaps in the housing 100, avoiding glare caused by stray light leakage. The lamp cavity 200a can also focus and guide the light, so that almost all the light emitted by the light-emitting element 220 is directed onto the grille assembly 300, reducing the light loss inside the housing 100. A low-power light source can achieve a clear indication effect.

[0062] In addition, the lamp cavity 200a can block dust, moisture and oil from entering, preventing the light-emitting element 220 from accumulating dust, short-circuiting or light decay, and extending the life of the light assembly.

[0063] To further reduce glare and make the emitted light softer, please continue reading. Figure 5 In one embodiment of this application, the light-emitting component 200 further includes an anti-glare rib 240, and the anti-glare rib 240 is located upstream of the light-emitting surface 230a in the light path of the light-emitting element 220.

[0064] The anti-glare rib 240 is located upstream of the light path from the light-emitting element 220 to the light-emitting surface 230a, which is equivalent to a physical light-blocking rib. The light emitted by the light-emitting element 220 first passes through the anti-glare rib 240. The light is scattered and diffused in the process of passing through the light-emitting rib. The originally concentrated and dazzling direct light is dispersed and softened, and then emitted through the light-emitting surface 230a, thereby eliminating glare, halo, bright spots and blurry edges, thus avoiding obvious halo in the area illuminated by the grid assembly 300 and improving the user's observation experience.

[0065] Among them, the anti-glare rib strip 240 has a structure in the form of a long strip, rib, or thin sheet.

[0066] The anti-glare rib 240 can be connected to the light-shielding component 210, the light-transmitting component 230, or both. In this embodiment, the anti-glare rib 240 is preferably connected to the light-transmitting component 230 and is integrally injection molded, which not only reduces the manufacturing difficulty but also ensures the connection strength between the light-transmitting component 230 and the anti-glare rib 240.

[0067] Please see Figure 10 as well as Figure 11 In one embodiment, the light-shielding member 210 includes two wire frames 211 and a lamp holder 212. The wire frames 211 form a wire groove 211a for arranging the wires 2 that communicate with the light-emitting member 220. The lamp holder 212 is connected between the two wire frames 211 and forms a lamp groove 212a. The light-emitting member 220 is located in the lamp groove 212a. The wire groove 211a communicates with the lamp groove 212a so that the wires 2 can smoothly enter the lamp groove 212a from the wire groove 211a and connect with the light-emitting member 220.

[0068] The cable tray 211a provides a dedicated space for the wires 2 to run. The cable clamps can be installed inside to organize the wires 2. The wires 2 are constrained inside the cable tray 211, so that they are not loose or exposed. This prevents the wires 2 from extending into the air duct, the lamp cavity 200a, or the area of ​​the light-transmitting component 230, so as not to interfere with the airflow or the light path. Furthermore, since the light-shielding component 210 forms the cable tray 211, it is difficult to observe the situation inside the cable tray 211a through the panel 150, thus improving the user's observation experience.

[0069] The light trough 212a limits and encloses the light-emitting element 220, ensuring that the position, angle and height of the light-emitting element 220 are consistent and the light output is consistent. The wire 2 can be directly transferred from the wire frame 211 to the light frame 212 and connected to the light-emitting element 220 without excessive bending and pulling, which improves the reliability of electrical connection and service life.

[0070] Furthermore, the light trough 212a includes two sub-troughs 212a1, which are arranged sequentially along the circumference of the air vent 100d. The light-emitting element 220 includes two light strips 221, and each sub-trough 212a1 is equipped with one light strip 221. The two light strips 221 are respectively used to connect with the wires 2 in the two wire troughs 211a. The two light strips 221 can be connected in series, in parallel, or in a mixed connection of series and parallel. No restrictions are imposed here.

[0071] The twin light troughs 212a1 are arranged sequentially along the circumference of the air vent 100d, and together with two light strips 221, they can achieve segmented continuous lighting of the annular light strip around the air vent 100d, resulting in more uniform light output and no obvious breaks. Each light strip 221 corresponds to a dedicated wire trough 211a for wiring, with the wires stored separately and without crossing each other. This structural design avoids the compression, wear, and short circuit of the double wires, resulting in higher electrical safety.

[0072] The sub-slot 212a1 can also be equipped with a wire clamping device to fix the light strip 221. Preferably, both ends of the sub-slot 212a1 are connected to the wire slots 211a in the two wire frames 211. In this way, when the light strip 221 is installed in the sub-slot 212a1, the wire 2 can be directly extended into the sub-slot 212a1 through the port of the sub-slot 212a1 and connected to the end of the light strip 221. This avoids problems such as wire pulling, uneven stress, and poor contact caused by the wire running through the middle of the sub-slot 212a1, and improves electrical stability.

[0073] It should also be understood that the light-emitting element 220 may include a light strip 221 or multiple LED beads. The multiple LED beads are connected by wires and are evenly distributed along the extension direction of the sub-slot 212a1. In this way, a continuous and uniform indicator light strip can be formed around the air vent 100d.

[0074] In the air purifier 1 of this application embodiment, at least two air vents 100d are provided, and the two air vents 100d are distributed vertically at intervals. Correspondingly, the fan assembly 500 also includes at least two fan modules 510. The number of fan modules 510, grille assembly 300 and light-emitting assembly 200 are all corresponding to the air inlet 100c. In this way, the vertical distribution of multiple fan modules 510 can be adapted to the vertical air purifier 1 without occupying horizontal space. The multiple fan modules 510 are stacked to increase the total air volume. Without increasing the volume of a single fan module 510 or increasing the speed of a single fan module 510, a higher CADR (Clean Air Delivery Rate) value is obtained, and the purification speed in large spaces is faster and more efficient.

[0075] In this embodiment, the two wire frames 211 in two adjacent light-emitting components 200 are connected one-to-one, and the wire grooves 211a are connected one-to-one. For details, please refer to... Figure 8 and Figure 9 The two light-transmitting elements 230 in two adjacent light-emitting components 200 can also be connected together, such as by buckles or other detachable methods, so as to facilitate connection with the light-shielding element 210.

[0076] The wire frames 211 of adjacent light-emitting components 200 are directly connected as a whole, improving the overall structural strength and installation accuracy, facilitating overall assembly, and after connection, the wire grooves 211a in two adjacent light-emitting components 200 are vertically connected, forming a continuous wiring channel, such as... Figure 12 Only one main power line is needed to power all 200 light-emitting components, reducing wiring points and improving electrical reliability.

[0077] The light-emitting component 200 described above can provide display light, and the brightness or different colors of the light can indicate the current working status of the air purifier 1 or the current air quality. In the preferred embodiment of this application, different colors of light are mainly used to correspond to different air qualities.

[0078] The air purifier 1 in this embodiment also includes an air quality detector and a controller. The air quality detector is used to monitor the current air quality parameters in real time, and the controller is used to control the two light strips 221 to emit corresponding light effects according to the current air quality parameters, so as to indicate the current air quality.

[0079] The light effects include solid color light effects and gradient light effects. Under solid color light effects, the light emitted by the two light strips 221 is the same color. For example, the two light strips 221 can both emit blue light, or they can both emit green light, orange light, or red light, etc. Under gradient light effects, the light emitted by the two light strips 221 is different colors. For example, the two light strips 221 can emit green light and blue light, or one light strip 221 can emit orange light and the other light strip 221 can emit red light, etc.

[0080] Air quality detectors include at least one of the following: dust sensor, formaldehyde sensor, VOC (Volatile Organic Compounds) sensor, and temperature and humidity sensor.

[0081] In this embodiment of the application, the preferred air quality detector includes a dust sensor, a formaldehyde sensor, a VOC sensor, and a temperature and humidity sensor. Multiple sensors monitor the current air quality parameters in real time and transmit them to the controller. After analyzing the air quality parameters, the controller determines the current air quality level. The air quality level includes at least poor, poor-medium, medium, good, excellent, and good. Corresponding to different air quality levels, the light-emitting component 200 can emit light of different colors.

[0082] In one specific embodiment, based on the two vents 100d, correspondingly, two light-emitting components 200 are also provided. When the light-emitting component 220 includes two light strips 221, the entire air purifier 1 includes four light strips 221, distributed vertically. Each light strip 221 can emit at least four different colors of light, which illuminate the grille assembly 300 to form a corresponding color semi-circular area 221a, such as... Figure 6 As shown, for example, the light strip 221 can emit four different colors of light: blue, green, orange, and red.

[0083] When the air quality level is excellent, all four light strips 221 can be blue; when the quality level is good, the top and bottom two light strips 221 can be one blue and one green, thus achieving a gradient effect; when the quality level is good, all four light strips 221 can be green; when the quality level is moderate, the top and bottom two light strips 221 can be one red and one orange, thus achieving a gradient effect; when the quality level is moderately poor, all four light strips 221 are orange; when the quality level is poor, all four light strips 221 are red.

[0084] In another embodiment, the air purifier 1 further includes an intake air quality detector and an exhaust air quality detector. Two adjacent light-emitting components 200 are respectively a first light-emitting component and a second light-emitting component. The intake air quality detector is used to monitor the intake air quality parameters in real time, and the exhaust air quality detector is used to monitor the exhaust air quality parameters in real time. The intake air quality detector and the exhaust air quality detector may also be at least one of a dust sensor, a formaldehyde sensor, a VOC sensor, and a temperature and humidity sensor.

[0085] The controller is used to control the first light-emitting component to emit a first light effect according to the current inlet air quality parameters, so as to indicate the inlet air quality. The controller is also used to control the second light-emitting component to emit a second light effect according to the current outlet air quality parameters, so as to indicate the outlet air quality.

[0086] It is understandable that the inlet air quality parameter refers to the air quality parameter before it is treated by the air purifier 1, and the outlet air quality parameter refers to the air quality parameter after it is treated by the air purifier 1. Therefore, the inlet air quality detector is generally set at the air inlet 100c, while the outlet air quality detector is generally set at the outlet, such as at the side outlet 110a or the top outlet 130a mentioned below. This can improve the accuracy of the detection data of the inlet air quality detector and the outlet air quality detector.

[0087] With two air vents 100d, the first light effect can be displayed from one of the air vents 100d, and the second light effect can be displayed from the other air vent 100d. When the light-emitting element 220 includes a light strip 221, the light strip 221 can be arranged around the air vents 100d. In this way, the first light effect can be that the light strip 221 emits blue light, green light, orange light, and red light. Blue light indicates that the imported air quality is excellent, green light indicates that the imported air quality is good, orange light indicates that the imported air quality is medium to poor, and red light indicates that the imported air quality is poor. When the blue and green lights are on, the user can choose whether to turn off the air purifier 1 according to the air quality requirements.

[0088] The second lighting effect can also be that the light strip 221 emits blue, green, orange, and red light. Blue light indicates excellent outlet air quality, indicating that filter 400 is working normally. Green light indicates good outlet air quality, indicating that filter 400 is slightly clogged. Orange light indicates poor outlet air quality, indicating that filter 400 is mostly clogged and it is recommended to replace filter 400. Red light indicates poor outlet air quality, indicating that filter 400 has failed and should be replaced immediately. Of course, the second lighting effect can also be that only the light strip 221 emits blue and red light, that is, only to remind the user that filter 400 is working normally and that filter 400 needs to be replaced.

[0089] Following on from the above, please continue reading. Figure 13 as well as Figure 14 The housing 100 has a receiving cavity 100b, and the air inlet 100c communicates with the receiving cavity 100b. The grille assembly 300 includes an air intake grille 310, which is detachably installed in the housing 100 and is at least partially located in the receiving cavity 100b and is positioned directly opposite the air inlet 100c. The air intake grille 310 is designed to be detachable for easy removal and cleaning. It is partially located in the receiving cavity 100b and directly opposite the air inlet 100c, serving as a primary interceptor (hair, large dust particles) and a guide for airflow, while preventing foreign objects from entering the interior.

[0090] Following on the above, it is also necessary to understand that in the existing technology, when the air purifier 1 purifies the air, dust will accumulate on the grille and at the grille installation location, making subsequent cleaning inconvenient.

[0091] To resolve the above issues, please refer to [link / reference]. Figures 15 to 17 The air purifier 1 in this embodiment further includes an abutment portion 800, which is connected to the housing 100. Please refer to [link to relevant documentation]. Figure 18 as well as Figure 19 And return to refer to Figures 15 to 16The abutting part 800 includes a first abutting part 810 and a second abutting part 820. The first abutting part 810 and the second abutting part 820 are respectively disposed on both sides of the air intake grille 310 in the thickness direction to abut against the air intake grille 310. The first abutting part 810 and the second abutting part 820 clamp and abut against the air intake grille 310 from both sides in the thickness direction of the air intake grille 310, replacing the traditional screws and slots, realizing the limiting and positioning of the air intake grille 310, and ensuring that it does not loosen after installation.

[0092] The first abutting part 810 and the second abutting part 820 are offset from each other on the projection of the first reference plane, and the first reference plane is perpendicular to the thickness direction of the air intake grille 310.

[0093] Thus, the first abutment part 810 and the second abutment part 820 have no gaps or dust-collecting structures, and the installation mating surfaces are continuous and smooth. Even if dust accumulates here, after the air intake grille 310 is disassembled, the dust accumulated on the first abutment part 810 and the second abutment part 820 is easier to remove due to the staggered arrangement of the first abutment part 810 and the second abutment part 820. As a whole, the air intake grille 310 is also easy to clean, thereby ensuring the filtering effect of the entire air intake grille 310.

[0094] For further information, please refer back to [link / reference]. Figure 3 The housing 100 also has a side mounting port 120b that communicates with the receiving cavity 100b. The air intake grille 310 is detachably mounted on the housing 100 through the side mounting port 120b. The air intake grille 310 is pushed into the receiving cavity 100b through the side mounting port 120b and finally reaches the working position directly opposite the air inlet 100c. When disassembling, it can be pulled out directly along the side without structural interference with the front air inlet 100c area. The whole process does not require disassembling the panel 150 or flipping the machine, making disassembly and assembly more convenient.

[0095] In addition, the side-mounted design makes it easier for the air intake grille 310 to be clamped and misaligned by both sides of the first abutment part 810 and the second abutment part 820.

[0096] In one embodiment, please continue to refer to Figure 3 and combined Figure 14 The housing 100 includes a filter element support 120, which forms an installation cavity 120a, a receiving cavity 100b, and a side mounting port 120b. The filter element 400 is detachably installed in the installation cavity 120a via the side mounting port 120b. In the thickness direction of the air intake grille 310, the receiving cavity 100b is located on the side of the side mounting port 120b adjacent to the air inlet 100c, and the installation cavity 120a and the side mounting port 120b are directly opposite each other.

[0097] The filter holder 120 can circumferentially limit and precisely position the filter 400. The filter 400 can be directly installed or removed from the side of the entire air purifier 1 without disassembling the entire outer shell or moving or flipping the purifier. This allows for quick replacement and greatly improves the convenience of use and maintenance.

[0098] In this embodiment, the air intake grille 310 and the filter element 400 share a side mounting port 120b. The air intake grille 310 and the filter element 400 can be disassembled, cleaned or replaced by inserting and removing them from the same side without disassembling or flipping the machine.

[0099] It is understandable that, since the receiving cavity 100b is located on the side of the side mounting port 120b adjacent to the air inlet 100c, and the mounting cavity 120a is directly opposite the side mounting port 120b, when the side mounting port 120b is viewed from the side, only the mounting cavity 120a used to install the filter element 400 can be observed. Even if the air intake grille 310 is installed from the side mounting port 120b, it will not affect the subsequent installation of the filter element 400, thus ensuring the installation efficiency of the filter element 400.

[0100] When the filter element 400 is installed, the air intake grille 310 is blocked by the filter element 400. This prevents users (especially children) from accidentally pulling out the air intake grille 310 without turning off the machine and without removing the filter element 400, thus preventing contact with live parts such as the fan and circuit inside the housing 100 and reducing the risk of electric shock and mechanical damage. In addition, during daily use, even if the air purifier 1 shakes slightly or is bumped, the air intake grille 310 will not accidentally fall out from the side mounting port 120b due to the blocking and limiting effect of the filter element 400, preventing the air intake grille 310 from falling and being damaged, and also preventing foreign objects from entering the interior through the side mounting port 120b.

[0101] Based on the aforementioned mounting cavity 120a and side mounting opening 120b being directly opposite each other, and the receiving cavity 100b for mounting the air intake grille 310 being located on one side of the side mounting opening 120b, when installing the air intake grille 310, it is first inserted at an angle, and then the entire air intake grille 310 is adjusted to be directly opposite the air inlet 100c. To improve the ease of installation of the air intake grille 310, in one embodiment of this application, please refer to... Figures 20 to 22 The air intake grille 310 includes a grille body 311 and a first side frame 312. The first side frame 312 is located at one end of the grille body 311 away from the mounting port 120b. The first side frame 312 includes a first side plate 3121 and a second side plate 3122. The first side plate 3121 is connected to the grille body 311 and extends toward the air inlet 100c. The second side plate 3122 is connected to the side of the first side plate 3121 away from the grille body 311 and extends toward the mounting port 120b. The first abutting part 810 is located on the side of the second side plate 3122 away from the air inlet 100c and abuts against the second side plate 3122. The second abutting part 820 abuts against the side of the grille body 311 facing the air inlet 100c. That is, along the installation direction of the side mounting port 120b, the second abutting part 820 is closer to the side mounting port 120b than the first abutting part 810.

[0102] The first side plate 3121 extends toward the air inlet 100c, making room for the second side plate 3122. The second side plate 3122 extends toward the mounting opening 120b away from the side, making room for the first abutting part 810. During installation, the entire air intake grille 310 is inserted obliquely into the mounting opening 120b, so that the second side plate 3122 is located on the side of the first abutting part 810 facing the air inlet 100c and abuts against the first abutting part 810. Using this as a pivot point, the air intake grille 310 is rotated toward the air inlet 100c until the second abutting part 820 is attached to the side of the grille body 311 facing the air inlet 100c. At this time, the first abutting part 810 and the second abutting part 820 are misaligned and clamp the air intake grille.

[0103] During the above process, when the air intake grille 310 is inserted at an angle, it rotates with the inner first abutment part 810 as the fulcrum. Because the second abutment part 820 is closer to the side mounting port 120b along the air intake direction, the first abutment part 810 and the second abutment part 820 are arranged in a staggered manner. When the air intake grille 310 is inserted at an angle and rotated with the first abutment part 810 as the fulcrum for assembly, the second abutment part 820 can avoid the rotational movement trajectory of the air intake grille 310, avoid assembly interference, ensure smooth and unobstructed side installation at an angle, and achieve reliable positioning after assembly.

[0104] To facilitate the oblique insertion of the second side panel 3122 into the side of the first abutment portion 810 facing the air inlet 100c during the installation of the air inlet grille, in one embodiment of this application, please refer to... Figure 22 The first abutting part 810 is provided with a first guide surface 810a on the side away from the fifth side plate 314. The first guide surface 810a is arranged outward along the air inlet direction of the air inlet 100c.

[0105] When the air intake grille 310 is inserted into the side mounting port 120b at an angle, the outward expansion guide surface of the first abutment part 810 will provide the fifth side upright plate 314 with a wider and wider clearance space as it goes inward. It will not be blocked in the initial stage of insertion, and guides the fifth side upright plate 314 to slide smoothly to the inside of the first abutment part 810, so as to achieve first hooking and then rotation.

[0106] In another embodiment, please continue to refer to Figure 22The fifth side plate 314 is provided with a second guide surface 3122a on the side away from the first abutment part 810. Along the air inlet direction of the air inlet 100c, the second guide surface 3122a is arranged outward. The second guide surface 3122a also plays a good guiding role. When the air intake grille 310 is inserted into the side mounting port 120b at an angle, the second guide surface 3122a of the fifth side plate 314 makes it easier for the fifth side plate 314 to slide to the side of the first abutment part 810 facing the air inlet 100c when it comes into contact with the first abutment part 810.

[0107] As a preferred embodiment, please continue reading Figure 22 The first abutment portion 810 is provided with a first guide surface 810a, and the fifth side plate 314 is also provided with a second guide surface 3122a. In this way, when the air intake grille 310 is installed, the fifth side plate 314 and the first abutment portion 810 are unlikely to interfere with each other, making it easier for the fifth side plate 314 to slide to the side of the first abutment portion 810 facing the air inlet 100c, ensuring that the first abutment portion 810 can stably abut against the fifth side plate 314.

[0108] Please see Figures 17 to 19 Along the installation direction of the side mounting port 120b, the filter element bracket 120 has a first side wall 124 and a second side wall 125 disposed opposite to each other. The side mounting port 120b is disposed on the first side wall 124, the first abutting part 810 is disposed on the second side wall 125 and has an abutting surface facing the air inlet 100c. The first side wall 124 is also provided with a snap-fit ​​part 1241 and / or a snap-fit ​​groove 310a. The air intake grille 310 has a snap-fit ​​groove 310a and / or a snap-fit ​​part 1241 on the side facing the side mounting port 120b. The snap-fit ​​groove 310a has open ends, and the snap-fit ​​part 1241 is elastically snapped into the snap-fit ​​groove 310a through the open ends.

[0109] The first sidewall 124 may be provided with a latching part 1241, a latching groove 310a, or both. Correspondingly, the air intake grille 310 may be provided with a corresponding latching groove 310a, a latching part 1241, or both. This can improve space utilization. See the embodiment in this application for details. Figure 23 and Figure 24 A buckle part 1241 is provided on the first side wall 124, and a buckle groove 310a is provided on the air intake grille 310, so that the air intake grille 310 is closer to the first side wall 124, which is conducive to the compact design of the internal space of the air purifier 1.

[0110] The snap-fit ​​groove 310a is open and unobstructed at both ends in the thickness direction. During the process of the air intake grille 310 being tilted and inserted and rotated to fasten, the snap-fit ​​part 1241 can slide smoothly into the snap-fit ​​groove 310a along the opening without being blocked or stuck by the groove wall. This avoids the tilting and rotating assembly trajectory of the air intake grille 310 and structurally avoids snap-fit ​​interference.

[0111] In this embodiment of the application, near the second sidewall 125, the first abutting part 810 abuts against the air inlet 100c from the inner side, and near the first sidewall 124, the latching part 1241 elastically latches against the latching groove 310a, increasing the friction between the latching part 1241 and the latching groove 310a. Thus, through the cooperation of the first abutting part 810 and the latching part 1241 and the latching groove, the inward displacement of the air intake grille 310 can be effectively restricted, ensuring stability.

[0112] During disassembly, simply push or gently pry the air intake grille 310 to release the latch 1241 from the latch groove 310a along the opening, thus directly pulling out the air intake grille 310 and achieving quick disassembly of the entire air intake grille 310.

[0113] It is understood that since the snap-fit ​​part 1241 is elastically snapped into the snap-fit ​​groove 310a, the snap-fit ​​part 1241 can be made of polypropylene, or it can be made of an elastic alloy or other materials that can be slightly deformed in the prior art. This will not be explained here. In the embodiment of this application, the snap-fit ​​part 1241 is preferably provided on the first side wall 124, that is, the snap-fit ​​part 1241 and the filter element support 120 are integrally injection molded structures.

[0114] Following the above, in order to facilitate the pulling of the air intake grille 310, a lifting handle can be provided on the side of the air intake grille 310 facing the side mounting port 120b. The lifting handle can extend into the mounting cavity 120a. In this way, when removing the air intake grille 310, the lifting handle can be pulled directly to allow the latching part 1241 to exit the latching groove 310a along the opening. Then, by pulling the handle, the air intake grille 310 can be easily pulled out from the side mounting port 120b, thereby facilitating the cleaning of the air intake grille 310 and the receiving cavity 100b.

[0115] In one embodiment, please refer back to the previous section. Figure 15 as well as Figure 16 The second contact portion 820 includes multiple baffles 821, which are connected to the filter element bracket 120 and respectively abut against the corners of the air intake grille 310.

[0116] The baffle 821 is only arranged at the corner of the grille, and the large air intake surface in the middle is unobstructed. This will not reduce the air intake area or increase the wind resistance, ensuring the air intake efficiency of the fan assembly is 500. The corner of the air intake grille 310 itself is the most rigid and least deformable part. Multiple baffles 821 are positioned at the corner to provide multi-point stability and limit the grille, preventing warping or loosening after installation.

[0117] Multiple baffles 821 can be integrally injection molded with the filter element bracket 120, eliminating the need for complex structures, providing sufficient strength, saving materials, and increasing production and assembly efficiency.

[0118] In one embodiment of this application, please refer to Figure 25 The grille assembly 300 may also include a filter 320, that is, the air purifier 1 also includes a filter 320, which is detachably connected to the side of the air intake grille 310 away from the air inlet 100c.

[0119] The filter 320 is detachably installed inside the air intake grille 310 to pre-filter pollutants such as hair, lint, and large dust particles in the air, reducing the burden on the rear filter element 400.

[0120] The filter 320 can be detachably installed on the housing 100 together with the air intake grille 310, so that the filter 320 can be removed for cleaning or replacement, and the air intake grille 310 can also be cleaned independently, with no hidden dust accumulation dead corners.

[0121] The air intake grille 310 and filter screen 320 can be detachable by magnetic attraction, i.e., the air intake grille 310 is embedded with a magnet and the filter screen 320 is inlaid with iron parts or magnetic sheets, and they are attracted by magnetic force, which is the fastest way to detach and assemble without structural interference. Alternatively, the air intake grille 310 and filter screen 320 can be attached with Velcro, which makes detachment and assembly smooth. Of course, they can also be connected by elastic buckles or plug-in connections.

[0122] In one embodiment of this application, please refer to Figures 26 to 27 Preferably, the connection is made by plugging and elastic snap-fit, so as to achieve quick connection and prevent the filter 320 from falling out. That is, the air intake grille 310 includes a grille body 311 and a second side frame 313 located on opposite sides of the grille body 311. The second side frame 313 and the grille body 311 form a slot 313a. At least one end of the slot 313a forms an insertion port 313b. The filter 320 is inserted into the slot 313a through the insertion port 313b. Among them, one of the filter screen 320 and the second side frame 313 is provided with an elastic protrusion 3131, and the other is provided with a recess 320a. The elastic protrusion 3131 and the recess 320a are engaged with each other.

[0123] The filter 320 can be inserted straight into the slot 313a without manual alignment. It can also be directly pulled out from the socket 313b for cleaning or replacement. The integrated design with the air intake grille 310 makes disassembly and assembly efficient. When inserted to the bottom, it automatically snaps and locks in place to prevent loosening or displacement. Disassembly only requires a gentle push to remove it.

[0124] On the other hand, the second side frame 313 is located on the side of the grille body 311. The second side frame 313 does not block the air intake surface of the grille body 311, and the middle air intake area is unobstructed, resulting in low wind resistance.

[0125] Further, please refer to Figure 27 The second side frame 313 includes a third side upright plate 3132 and a fourth side upright plate 3133. The third side upright plate 3132 is connected to the grid body 311, and the fourth side upright plate 3133 is connected to the side of the third side upright plate 3132 away from the third side upright plate 3132. A slot 313a is formed between the third side upright plate 3132, the fourth side upright plate 3133 and the grid body 311.

[0126] The second side frame 313 is divided into two bent upright plates. The third side upright plate 3132, the fourth side upright plate 3133 and the grille body 311 form a U-shaped slot 313a, which limits the periphery of the filter screen 320 in multiple ways to ensure stability after insertion.

[0127] On the other hand, the third side plate 3132 and the fourth side plate 3133 can be integrally formed with the grille body 420. The third side plate 3132 and the fourth side plate 3133 reinforce each other, improving the side strength of the grille body 420, and making it less prone to deformation and breakage after long-term insertion and removal of the filter screen 320.

[0128] Based on the above, one of the filter screen 320 and the second side frame 313 is provided with an elastic protrusion 3131 and the other is provided with a recessed portion 320a. That is, the filter screen 320 is provided with an elastic protrusion 3131 and the second side frame 313 is provided with a recessed portion 320a; or the filter screen 320 is provided with a recessed portion 320a and the second side frame 313 is provided with an elastic protrusion 3131; or the filter screen 320 is provided with both an elastic protrusion 3131 and a recessed portion 320a, and the second side frame 313 is provided with a corresponding recessed portion 320a and an elastic protrusion 3131.

[0129] In this embodiment of the application, it is preferable that the second side frame 313 is provided with an elastic protrusion 3131. Since the second side frame 313 includes a third side upright plate 3132 and a fourth side upright plate 3133, the inner wall of the third side upright plate 3132 and / or the fourth side upright plate 3133 is further provided with an elastic protrusion 3131.

[0130] The elastic protrusion 3131 can be provided on the third side plate 3132, or on the fourth side plate 3133, or both the third side plate 3132 and the fourth side plate 3133 can be provided with elastic protrusions 3131. No restrictions are imposed here.

[0131] In another embodiment, please refer back to [reference needed]. Figure 25 The air intake grille 310 also includes a fifth side plate 314. The fifth side plate 314 is located at one end of the slot 313a and blocks the slot 313a. That is, when the filter screen 320 is inserted from the other end of the slot 313a, it is directly blocked by the fifth side plate 314, so it will not be inserted off-center or over-inserted. There is no need to manually adjust the positioning, and the assembly accuracy is higher.

[0132] Among them, the two ends of the fifth side plate 314 can be connected to two second side frames 313 respectively, connecting the second side frames 313 and the grid body 311 into one, which greatly improves the strength of the side and end of the grid body 311, and makes it less prone to deformation and cracking when the filter screen 320 is repeatedly inserted and removed.

[0133] Please continue reading. Figure 3 In one embodiment of this application, the fan assembly 500 further includes at least two fan modules 510, that is, the air purifier 1 further includes at least two fan modules 510. The at least two fan modules 510 are disposed in the housing 100. Since the fan assembly 500 includes at least two fan modules 510, and the number of grille assembly 300, light-emitting assembly 200 and fan modules 510 all correspond to the number of air inlet 100c, at least two air intake grilles 310 are also provided, and they are arranged one by one upstream of the at least two fan modules 510 along the air intake direction.

[0134] Each fan module 510 also has a separate air intake grille 310, forming an independent air intake channel, which avoids airflow collision and eddies between multiple fan modules 510, making the air intake smoother and the overall air volume and static pressure more stable.

[0135] The air inlet 100c and the fan module 510 are each equipped with multiple filters, and correspondingly, multiple filter elements 400 are also provided. The multiple filter elements 400 are spaced apart in the mounting cavity 120a. The filter element 400 has a first state of being assembled with the filter element support 120 and a second state of being separated from the filter element support 120. In the first state, the filter element 400 is in a working state or a standby state. In the second state, the filter element 400 can be replaced or repaired.

[0136] Among them, filter element 400 adopts electro-purification filter and HEAP (High Efficiency Particulate Air Filter), and the number of filter elements 400 corresponds one-to-one with the number of fan modules 510, that is, one fan module 510 is equipped with one filter element 400, with independent air intake and no air competition between them. Each fan module 510 can work under stable air intake conditions, and the air volume output is more uniform and more reliable.

[0137] In addition, multiple 400 filters can be independently introduced at the same time, which greatly increases the effective air intake area of ​​the whole unit, reduces the air volume per unit area, reduces the wind resistance of the 400 filters, and eliminates the need for the fan module 510 to operate under high load, resulting in lower noise and lower energy consumption.

[0138] As a component of the housing 100, the filter element bracket 120 not only fixes the filter element 400 but also enhances the overall structural strength of the housing 100. During operation, the housing 100 is less prone to deformation and resonance, further reducing the vibration and noise of the entire machine.

[0139] In the use of air purifiers, under existing technology, there is a possibility that the filter element may fall off during the operation of the whole machine, which poses a safety hazard.

[0140] Based on the above problems, in this embodiment of the application, the filter element 400 is detachably installed in the mounting cavity 120a through the mounting port, that is, the filter element 400 leaks out through the mounting port. To prevent the filter element 400 from falling out of the mounting port, in one embodiment of this application, please continue to refer to... Figure 28 and Figure 29 The air purifier 1 in this embodiment further includes a triggering mechanism 600. The triggering mechanism 600 includes a bracket 610 and an actuating member 640 movably disposed on the bracket 610. The bracket 610 is connected to the filter element bracket 120. The actuating member 640 has a first position and a second position. When the actuating member 640 is in the first position, it stops the filter element 400 in the direction in which the filter element 400 disengages from the mounting cavity 120a. When the actuating member 640 is in the second position, the filter element 400 can disengage from the mounting cavity 120a.

[0141] Toggle 640 is in the first position, such as Figure 31 and Figure 33 The filter element 400 is directly and physically blocked, which effectively prevents the filter element 400 from being accidentally pulled out during the operation of the air purifier 1, and also prevents the filter element 400 from being accidentally loosened when the air purifier 1 is moved, vibrated during operation, or tilted by external force, thereby improving the safety of the air purifier 1.

[0142] Toggle 640 is in the second position, such as Figure 32 and Figure 34Since the toggle 640 does not obstruct the trigger convex filter element 400, the filter element 400 can be disengaged from the mounting cavity through the mounting port. Furthermore, it can be understood that the user can also install the filter element 400 when the toggle 640 is in the second position.

[0143] It is understood that the installation port can be a side installation port 120b located on the side of the air purifier 1, or it can be an installation port located on other sides of the air purifier 1. This will not be explained here. In this embodiment, the preferred installation port is the side installation port 120b. The filter element 400 is installed and removed through the side installation port 120b. The filter element 400 can be directly installed or removed from the side of the entire air purifier 1 without disassembling the entire outer shell or moving or flipping the purifier. Replacement can be completed quickly, greatly improving the convenience of use and maintenance.

[0144] Optionally, when the air purifier 1 includes multiple filter elements 400 and multiple triggering mechanisms 600, the multiple filter elements 400 are spaced apart in the mounting cavity 120a, and a triggering mechanism 600 is arranged between two adjacent filter elements 400.

[0145] The multiple 400 filter elements are arranged at intervals to disperse airflow, increase the effective filtration area, improve the purification air volume and dust holding capacity within the same overall size, and extend the overall service life of the 400 filter elements; at the same time, it avoids excessive air resistance due to overload of a single 400 filter element, ensuring smooth airflow and lower noise.

[0146] In addition, a triggering mechanism 600 is provided between two adjacent filter elements 400. That is, two adjacent filter elements 400 can be blocked at the same time by one triggering mechanism 600, reducing the number of triggering mechanisms 600, improving the space utilization of the air purifier 1, making the whole unit more compact, and also reducing manufacturing costs.

[0147] Based on the above, when the actuating member 640 is in the first position, it can stop the filter element 400 and prevent the filter element 400 from being accidentally removed during machine operation. Therefore, the ease of installation and removal of the filter element 400 also needs to be considered. Based on this, in one embodiment of this application, please refer to... Figures 30 to 32 The filter element 400 has a trigger protrusion 410. When the actuating member 640 is in the first position, it stops the trigger protrusion 410 in the direction in which the filter element 400 is separated from the mounting cavity 120a, thereby blocking the filter element 400. The actuating member 640 is provided with a relief groove 640a. When the actuating member 640 is in the second position, the trigger protrusion 410 can pass through the relief groove 640a.

[0148] When the actuating member 640 is in the second position, the trigger protrusion 410 on the filter element 400 can smoothly pass through the clearance groove 640a, providing a continuous and interference-free passage for the assembly of the filter element 400, thereby improving the smoothness and alignment accuracy of the filter element 400 assembly.

[0149] Since the clearance groove 640a is set on the actuating member 640, when installing and removing the filter element 400, it is not necessary to remove the actuating member 640 or add an additional independent clearance structure. The clearance function is integrated into the actuating member 640, which effectively simplifies the structure, reduces the number of parts, improves space utilization and assembly efficiency, and also ensures the convenience of disassembling and installing the filter element 400.

[0150] It is understood that the movement of the toggle member 640 relative to the support 610 can be either rotation or sliding, thereby achieving the switching between the first position and the second position. Please refer to [link / reference needed]. Figure 31 and Figure 32 In one embodiment of this application, the actuating member 640 is slidably disposed on the bracket 610. The bracket 610 is provided with two limiting parts 611 at both ends of the moving stroke of the actuating member 640. When the actuating member 640 is in the first position, the actuating member 640 abuts against one of the limiting parts 611. When the actuating member 640 is in the second position, the actuating member 640 abuts against the other limiting part 611.

[0151] That is, by setting limit parts 611 at both ends of the active stroke of the toggle member 640 through the bracket 610, the sliding limit position of the toggle member 640 can be physically limited, preventing the toggle member 640 from sliding excessively, sliding out of the bracket 610 or deviating from the working position, ensuring the positioning accuracy of the first position and the second position. The contact feeling when sliding to both ends of the stroke can give the user clear feedback on whether it has slid into place, without the need to judge whether it has slid into place, making the operation simple and less prone to misoperation.

[0152] In one embodiment of this application, please refer to Figure 28 , Figure 35 as well as Figure 36 The filter element support 120 includes a body 122 and a plurality of partitions 123. The body 122 forms an installation cavity 120a. The plurality of partitions 123 are disposed in the installation cavity 120a and connected to the body 122. The plurality of partitions 123 divide the installation cavity 120a into a plurality of sub-installation cavities 120a1. Each sub-installation cavity 120a1 corresponds to a filter element 400. The partitions 123 form a receiving cavity 123a. The triggering mechanism 600 is at least partially located in the receiving cavity 123a.

[0153] Multiple partitions 123 evenly divide the mounting cavity 120a, and each filter element 400 has an independent sub-mounting cavity 120a1. During assembly, the filter elements 400 will not squeeze, misalign, or interfere with each other, which facilitates the orderly arrangement of multiple filter elements 400. At least part of the triggering mechanism 600 is located in the receiving cavity 123a of the partition 123, which can prevent dust, collision, and accidental bumps during the disassembly and assembly of the filter elements 400, greatly reducing the risk of damage, jamming, and failure of the triggering mechanism 600, and ensuring reliability and stability.

[0154] The partition 123 serves as both a partition for the sub-mounting cavity 120a1 and a storage unit for the trigger mechanism 600, achieving dual functionality. It eliminates the need for an additional independent mounting base for the trigger mechanism 600, resulting in fewer parts, a simpler structure, and easier assembly.

[0155] In this embodiment, the partition 123 is connected to the body 122, which is equivalent to adding a reinforcing structure in the mounting cavity 120a, making the filter element bracket 120 less prone to deformation and stronger, and the filter element 400 more stable in installation, making it less likely to shake or resonate.

[0156] It is understood that at least a portion of the trigger mechanism 600 is located within the receiving cavity 123a of the partition 123, which can improve space utilization. The trigger mechanism 600 may be partially located within the receiving cavity 123a or may be entirely located within the receiving cavity 123a. However, based on the fact that the toggle member 640 can be manually moved to switch between the first and second positions, in this embodiment of the application, it is preferable that a portion of the trigger mechanism 600 is located within the receiving cavity 123a of the partition 123, while the toggle member 640 may be located outside the receiving cavity 123a, thereby improving the convenience of operation.

[0157] Please return to the reference. Figure 29 Based on the embodiments of this application, the filter element 400 is installed in the mounting cavity 120a through the side mounting port 120b, that is, the filter element 400 adopts a side mounting method.

[0158] Furthermore, the actuating element 640 and the mounting port (i.e., the side mounting port 120b) are located on the same side of the filter element bracket 120, and the actuating element 640 is visible through the side mounting port 120b.

[0159] This means that the user can install and remove the filter element 400 and operate the toggle component 640 on the same side, without having to change direction or go around the machine. The operation path is unified, making operation more convenient. In addition, the toggle component 640 is directly exposed from the side mounting port 120b, making it more convenient to move the toggle component 640. There is no need to open a separate operation hole on the filter element bracket 120, reducing the number of openings and simplifying the structure.

[0160] Optionally, the triggering mechanism 600 further includes a second triggering module 630, which is mounted on the bracket 610. When the toggle member 640 is in the first position, please refer to [reference needed]. Figure 33 The second trigger module 630 is in the triggered state. When the toggle 640 is in the second position, please refer to [the relevant documentation]. Figure 34 The second trigger module 630 is in an untriggered state.

[0161] The trigger signal of the second trigger module 630 can be used as the start-up condition for the air purifier 1: only when the second trigger module 630 is in the triggered state, the filter element 400 is blocked by the toggle member 640, and the fan assembly 500 can start; if the second trigger module 630 is not triggered, the filter element 400 is not blocked by the toggle member 640, which poses a safety hazard, and the whole machine is prohibited from working. The whole machine being prohibited from working can be in a power-off state or in a standby state.

[0162] It is understandable that the trigger signal of the second trigger module 630 can also be a prerequisite for turning on the air purifier 1. That is, the air purifier 1 can only be ready to turn on when the toggle 640 is in the first position that blocks the filter 400.

[0163] In addition, the second trigger module 630 is directly integrated on the bracket 610 of the trigger mechanism 600. It is triggered by the mechanical movement of the toggle member 640. There is no need to open a switch position on the filter element bracket 120 and the housing 100. It makes full use of the gap space between the filter elements 400, does not occupy the volume of the air duct, and the overall structure is more compact.

[0164] Furthermore, to avoid situations where the filter element 400 is not installed but the toggle element 640 is accidentally moved to the first position, which could cause the fan assembly 500 to run idle, allowing foreign objects to enter the machine through the side mounting port 120b and damage the components, or where the user's air purifier 1 is in operation and there is a risk of electric shock, etc.

[0165] Therefore, in this embodiment, the filter element 400 has a first state of being assembled with the filter element support 120 and a second state of being separated from the filter element support 120. The triggering mechanism 600 also includes a first triggering module 620. When both adjacent filter elements 400 are in the first state, the first triggering module 620 is in the triggered state; when at least one of the two adjacent filter elements 400 is in the second state, the first triggering module 620 is in the untriggered state. Specifically, when both adjacent filter elements 400 are in the first state, the first trigger module 620 is in the trigger state; when at least one of the two adjacent filter elements 400 is in the second state, the first trigger module 620 is in the non-trigger state.

[0166] The first trigger module 620 uses whether both adjacent filter elements 400 are properly assembled as the sole trigger condition. If any filter element 400 is not installed, not pushed into place, or is in a separated state, the first trigger module 620 immediately switches to a non-triggered state. This eliminates the detection misjudgment of "single filter element missing or single filter element not installed" from an electrical perspective, ensuring that only when both filter elements 400 on both sides are in a valid assembly state can the prerequisite for the operation of the whole machine be met.

[0167] In some embodiments, the first trigger module 620 and the second trigger module 630 are associated together and controlled by the controller of the entire air purifier 1. If either the first trigger module 620 or the second trigger module 630 is in a non-triggered state, the controller can control the entire air purifier 1 to not work, or control the fan assembly 500 in the air purifier 1 to not work, thereby avoiding electric shock, or preventing the adsorption of foreign objects when the filter element 400 is not working, thereby improving the stability and safety of the entire air purifier 1.

[0168] Understandably, when removing the filter element 400, the toggle 640 must be in the second position. When the toggle 640 is in the second position, the second trigger module 630 is in an untriggered state, and the entire air purifier 1 does not work. Thus, even if the first trigger module 620 is in a triggered state, the entire air purifier 1 is not working, ensuring that the whole machine is in a non-working state during the removal of the filter element 400, thereby improving safety.

[0169] Furthermore, in this embodiment, the bracket 610, the first trigger module 620, the second trigger module 630, and the actuating component 640 are integrated into an independent trigger module, which can be pre-assembled and then assembled into the filter element bracket 120. This reduces the number of processes, increases the yield, and allows the trigger module to be replaced separately in case of failure, making maintenance and replacement convenient.

[0170] Furthermore, the filter element support 120 is provided with a sliding groove 120c for each filter element 400. During the process of assembling the filter element 400 into the mounting cavity 120a, the trigger protrusion 410 can extend into the sliding groove 120c, and when the trigger protrusions 410 on two adjacent filter elements 400 extend into their respective corresponding sliding grooves 120c, the first trigger module 620 is triggered.

[0171] The filter element support 120 is equipped with a corresponding slide groove 120c for each filter element 400, so that each filter element 400 is exclusively positioned in one slide groove 120c. When the filter element 400 is assembled into the mounting cavity 120a, the trigger protrusion 410 on it first extends into the corresponding slide groove 120c and is guided along the slide groove 120c to complete the assembly. The slide groove 120c is used to guide and position the filter element 400, so that the assembly of the filter element 400 is smoother and more accurate, and effectively avoids the filter element 400 from being installed off-center, misaligned or reversed.

[0172] Only when the trigger protrusions 410 of two adjacent filter elements 400 are successfully inserted into their respective sliding grooves 120c, proving that both filter elements 400 are installed in place, will the first trigger module 620 be triggered. If any filter element 400 is not installed in place, is installed off-center, is installed backwards, or the trigger protrusion 410 does not enter the sliding groove 120c, the first trigger module 620 will remain in an untriggered state, and the whole machine will not be able to start. This achieves precise physical detection of the installation status of the two filter elements 400, ensuring that the whole machine can enter the working state or standby state only when both filter elements 400 are correctly assembled and the actuating component 640 is in the first position and stops the filter elements 400.

[0173] Further, please refer to Figure 35 and Figure 36 The first trigger module 620 includes two movable blocks 621 and a first switching element 622. The first switching element 622 is disposed between the two movable blocks 621. The two movable blocks 621 have a first compression state in which they approach and press against the first switching element 622, and a first initial state in which they move away from and release the first switching element 622. When two adjacent filter elements 400 are both in the first state, the two filter elements 400 respectively press against the two movable blocks 621, so that the movable blocks 621 are both in the first compression state. In the first compression state, the first trigger module 620 is in the trigger state. Figures 37 to 38 As shown; when at least one active block 621 is in the first initial state, as Figures 39 to 42 As shown, the first trigger module 620 is in a non-triggered state. Please refer to [link / reference]. Figure 37 and Figure 38 When the two active blocks 621 are in the first initial state, the first triggering module 620 is in the non-triggered state.

[0174] Please see Figure 37 and Figure 38 That is, only when two adjacent filter elements 400 are fully assembled can the movable blocks 621 on both sides be squeezed together to bring them closer together and trigger the first switching element 622 in the middle. At this time, the first triggering module 620 is in the triggered state. If any filter element 400 is not installed, installed off-center, loose, or removed, the first switching element 622 will not be triggered, and the first triggering module 620 will be in the untriggered state.

[0175] In this embodiment, the state switching is achieved by the compression of the filter element 400 and the reset of the movable block 621. There is no complex electrical control, and it is a purely mechanical trigger. Furthermore, the first trigger module 620 is arranged between two adjacent filter elements 400, which does not occupy the air duct, does not interfere with the airflow, and does not increase the wind resistance, making the overall layout simpler.

[0176] The first switching element 622 can be a micro switch, or it can be that the two movable blocks 621 have contacts. The first switching element 622 is a circuit board, and the circuit board also has corresponding trigger contacts. When the contacts on the two movable blocks 621 contact the trigger contacts respectively, the circuit can be turned on, thereby making the first trigger module 620 in the trigger state. No restrictions are imposed here.

[0177] In order to enable the first trigger module 620 to quickly enter a non-triggered state when the filter element 400 is removed, in one embodiment of this application, the first trigger module 620 further includes an elastic element 623. The elastic element 623 connects two movable blocks 621. Under the elastic action of the elastic element 623, the movable blocks 621 tend to reset to the first initial state.

[0178] It is understandable that in the first trigger module 620, the elastic element 623 connects the two moving blocks 621 into a linked whole: In the first initial state, the elastic element 623 is in a naturally extended state, the two movable blocks 621 remain in the first initial state and are far apart from each other, and the first switching element 622 is not triggered.

[0179] Please see Figures 39 to 40 When only the upper filter element 400 is installed, the upper filter element 400 presses the upper movable block 621. Under the pull of the elastic element 623, it will only drive the lower movable block 621 to move together and avoid it, but the two movable blocks 621 do not get close to each other, that is, the two movable blocks 621 do not press the first switch element 622. At this time, the first trigger module 620 is not triggered.

[0180] Please see Figures 41 to 42 When only the lower filter element 400 is installed, the lower filter element 400 presses the lower movable block 621. Under the pull of the elastic element 623, it will only drive the upper movable block 621 to move together and avoid it, but the two movable blocks 621 do not get close to each other, that is, the two movable blocks 621 do not press the first switch element 622. At this time, the first switch element 622 is still not triggered.

[0181] When only one filter element 400 is installed, the movable blocks 621 will only move together to avoid each other and will not approach each other. This structurally prevents the operation of a single filter element 400 or the operation of a missing filter element. There is only one elastic element 623, which can realize the mutual linkage of the two movable blocks 621. The movable blocks 621 automatically reset to the first initial state. When a single filter element 400 is installed, it will only avoid each other and will not approach each other. When two filter elements 400 are installed, they will be forced to approach each other and trigger each other. The structure is relatively simple, making the entire triggering mechanism 600 more compact.

[0182] Furthermore, under the action of the elastic element 623, the movable block 621 always tends to reset to the first initial state. When the filter element 400 is removed or detached from the assembly state, the movable block 621 can automatically and instantly reset without external force assistance, and the first trigger module 620 quickly switches to the non-triggered state with no response delay. When there is no filter element 400 pressing, the elastic element 623 maintains the movable block 621 in the first initial state, avoiding accidental displacement of the movable block 621 and false triggering of the first switching element 622 due to equipment vibration or handling shaking. Structurally, this eliminates false conduction and false start-up, greatly improving safety and reliability.

[0183] The elastic element 623 provides a balanced and stable reset force for the two movable blocks 621, making the movable blocks 621 move smoothly. Even after multiple disassemblies and reassemblies of the filter element 400, the triggering and reset accuracy can be maintained. The performance is stable in the long term. Moreover, due to its elasticity, the elastic element 623 can buffer the mechanical impact on the movable blocks 621 during the assembly of the filter element 400, reduce the hard collision on the first switching element 622, reduce mechanical wear and fatigue damage, and improve the service life of the movable blocks 621 and the first switching element 622.

[0184] The elastic element 623 can be a metal elastic element, such as a spring or a metal sheet, or a polymer elastomer, such as silicone or rubber. Of course, it can also be other elastic structures in the prior art, which are not limited here.

[0185] Following the above, the two movable blocks 621 moving closer and further apart can be achieved by the two movable blocks 621 moving along a straight line, or by the two movable blocks 621 rotating separately or together around the axis of rotation, achieving the movement of closer and further apart through changes in the swing angle. In the embodiments of this application, a rotational connection is preferred. Please refer to [link to relevant documentation]. Figure 35 as well as Figure 37 Two movable blocks 621 are disposed on the same side of the bracket 610. The two movable blocks 621 include a first movable block 6211 and a second movable block 6212. The first movable block 6211 is rotatably connected to the bracket 610, and the second movable block 6212 is rotatably connected to the first movable block 6211.

[0186] The first movable block 6211 rotates with the bracket 610, and the second movable block 6212 rotates with the first movable block 6211. The entire process is a rotating pair, which has less friction and lower movement resistance compared to a sliding block, and is more stable in long-term use.

[0187] During the assembly of filter element 400, the compressive force during assembly is transmitted step by step through the first movable block 6211 and the second movable block 6212. The motion pattern is highly matched with the action of gradually pushing the filter element 400 into the installation, which can achieve smooth and gradual triggering during the assembly process of filter element 400. The motion resistance is small, which can effectively buffer mechanical impact and prevent the first switching element 622 from being damaged due to excessive instantaneous impact force, thus greatly extending the life of the first switching element 622.

[0188] Furthermore, it is understandable that the rotational type only swings around the axis of rotation, and compared to the linear motion, it does not occupy too much vertical space, which is beneficial to the internal structural layout of the air purifier 1.

[0189] To ensure smoother movement of the two active blocks 621 when they are relatively close, in one embodiment of this application, please refer to 43 and... Figure 44 One of the two movable blocks 621 is provided with a guide part 6213, and the other is provided with a guide mating part 6214. The guide part 6213 and the guide mating part 6214 cooperate to guide the two movable blocks 621 to move closer or further away.

[0190] The guide part 6213 and the guide mating part 6214 limit each other, ensuring that the two movable blocks 621 only move closer or further away from each other according to the design path, making it difficult for them to deviate and reducing the possibility of jamming. Moreover, the guide structure is directly made on the movable block 621, eliminating the need to set an additional guide structure on the bracket 610. This reduces costs and also facilitates the miniaturization design of the entire trigger mechanism 600.

[0191] The guide part 6213 can be a guide post, and correspondingly, the guide mating part 6214 is a guide hole; the guide part 6213 can also be a guide slide rail, and the guide mating part 6214 can be a guide groove. Of course, it can also be other guide forms, which are not limited here.

[0192] To enhance the protection of the first switching element 622 and thus improve the safety and stability of the entire triggering mechanism 600, in one embodiment of this application, please refer to [reference needed]. Figure 31 One of the two movable blocks 621 forms a placement cavity 6211a, and the other is provided with a first switching element 622. The first switching element 622 is at least partially located in the placement cavity 6211a. When the two movable blocks 621 are in a first compression state, the bottom wall of the placement cavity 6211a compresses the first switching element 622.

[0193] Thus, the placement cavity 6211a forms a semi-enclosed protective structure, which can block dust and foreign objects from colliding, reduce the possibility of the first switching element 622 being accidentally bumped or squeezed and damaged during assembly, transportation and use, and extend the service life of the first switching element 622.

[0194] Furthermore, the first switching element 622 is directly mounted on one of the movable blocks 621 and extends into the placement cavity 6211a of the other movable block 621, eliminating the need for additional support structures. This results in fewer parts, simpler assembly, and lower costs. Since the first switching element 622 is partially or entirely housed within the placement cavity 6211a, it does not protrude outwards or occupy additional external space of the movable block 621. This not only reduces costs but also facilitates the miniaturization of the entire triggering mechanism 600.

[0195] Please see Figure 45 and Figure 46 In this embodiment of the application, the filter element 400 includes a main body 420 and a cover plate 430 detachably connected to one side of the main body 420. When the filter element 400 is in the first state, the cover plate 430 is exposed through the mounting port (i.e., the side mounting port 120b).

[0196] When the filter element 400 is in the first state, the cover plate 430 is only an external part of the entire filter element 400. The cover plate 430 can also be used as a sealing part of the sealing side mounting port 120b. When wear or damage occurs, the cover plate 430 can be replaced separately without replacing the entire filter element 400, which greatly reduces the cost of use and maintenance.

[0197] The cover plate 430 has a buckle 431 on the outside, which provides users with a clear grip and force application point. When installing or removing the filter element 400, the filter element 400 can be easily lifted or pushed through the buckle 431 without direct contact with the filter element 400, which saves more effort.

[0198] The main body 420 and the cover plate 430 can be detachable by magnetic attraction, with a magnet embedded in the main body 420 and an iron piece or magnet embedded in the cover plate 430, which are attracted by magnetic force. Alternatively, they can be snap-fit. In this embodiment, the snap-fit ​​is preferred.

[0199] Specifically, one of the main body 420 and the cover plate 430 is provided with a snap-fit ​​groove 420a, and the other of the two is provided with a corresponding snap-fit ​​part 432. The snap-fit ​​groove 420a extends vertically. That is, the snap-fit ​​groove 420a can be provided on the main body 420 and the snap-fit ​​part 432 can be provided on the cover plate 430, or the snap-fit ​​part 432 can be provided on the main body 420 and the snap-fit ​​groove 420a can be provided on the cover plate 430. Through the snap-fit ​​cooperation between the snap-fit ​​part 432 and the snap-fit ​​groove 420a, the lateral separation of the cover plate 430 and the main body 420 can be restricted. That is, through the vertical snap-fit ​​cooperation, the cover plate 430 and the main body 420 can be accurately guided and assembled and laterally stabilized and limited, ensuring that the two fit tightly without shaking.

[0200] In another embodiment of this application, one of the main body 420 and the cover plate 430 is provided with a spring-loaded anti-reverse buckle 421, and the other of the two is provided with a sliding buckle 433. The spring-loaded anti-reverse buckle 421 and the sliding buckle 433 elastically abut against each other vertically to limit the cover plate 430 from falling vertically.

[0201] One end of the anti-reverse spring clip 421 can be connected to the main body 420 or the cover plate 430, while the other end is suspended and forms an abutment surface against the sliding clip 433, such as... Figure 45 As shown, when the anti-reverse spring buckle 421 is connected to the main body 420, the abutting surface faces upward. When the locking part 432 is provided on the cover plate 430, the overall installation method is as follows: the cover plate 430 is installed from bottom to top. During the installation process, the locking part 432 is inserted into the locking groove 420a from bottom to top. During the continued insertion process, the sliding buckle 433 will press against the anti-reverse spring buckle 421, causing the anti-reverse spring buckle 421 to avoid facing the side of the main body 420 until the cover plate 430 is inserted into place. At this time, the sliding buckle 433 and the anti-reverse spring buckle 421 are misaligned, the anti-reverse spring buckle 421 returns to its original position, and supports the sliding buckle 433, thereby restricting the cover plate 430 from falling vertically.

[0202] By using the anti-reverse spring clip 421 and the sliding clip 433 to vertically and elastically abut against each other, the cover plate 430 is structurally restricted from falling vertically, thus preventing the cover plate 430 from loosening due to gravity or vibration and improving the reliability of the connection.

[0203] It should be understood that, in the embodiments of this application, the snap-fit ​​part 432 can be integrally formed with the corresponding main body 420 or cover plate 430, and the anti-reverse spring buckle 421 and the sliding buckle 433 can also be integrally formed with the corresponding main body 420 or cover plate 430, thereby increasing the overall structural strength.

[0204] It is understandable that the fan is a key performance component of air purifier 1. In existing technology, the fan in air purifier 1 tends to generate significant noise during operation, affecting the user experience.

[0205] Based on this, please refer to Figures 47 to 49 In this embodiment of the application, the wind turbine module 510 includes two volutes 511 and a wind turbine module 512. The two volutes 511 cooperate to define a connected wind turbine cavity 511a and two diffuser cavities 511b. The side of each diffuser cavity 511b away from the wind turbine cavity 511a forms a first air outlet 511c. The wind turbine module 512 is housed in the wind turbine cavity 511a. The two volutes 511 are spaced apart along the circumference of the wind turbine module 512 so that the airflow passes through the wind turbine module 512 in sequence and is thrown out from the first air outlet 511c.

[0206] The impeller module 512 rotates to generate centrifugal force, driving the airflow to flow along the air inlet direction and providing the original power for air circulation. The impeller cavity 511a provides a stable housing space for the impeller module 512, ensuring that the airflow flows directionally into the diffuser cavity 511b. The diffuser cavity 511b decelerates and diffuses the split airflow, converting the airflow pressure into static pressure, improving the impeller module 512's ability to penetrate the filter element 400, while reducing airflow separation and eddies, and reducing aerodynamic noise. The dual first air outlets 511c can simultaneously discharge the purified airflow, increase the air outlet area, and provide gentle airflow, avoiding the whistling caused by concentrated airflow.

[0207] In this embodiment, due to the double volute 511, the airflow enters the two diffuser chambers 511b simultaneously after passing through the impeller module 512. The total flow is evenly distributed, and the airflow velocity in the single diffuser chamber 511b is reduced, thereby guiding and diffuserizing the airflow, balancing static pressure and airflow, increasing airflow while overcoming system resistance, and reducing the wind speed at the first air outlet 511c, thus reducing outlet wind noise.

[0208] The first air outlet 511c can be extended to the side air outlet 110a. By extending the first air outlet 511c to the side air outlet 110a, the first air outlet 511c of the fan module 510 and the side air outlet 110a of the whole machine are connected in a short, straight, and seamless manner, which effectively reduces wind resistance and airflow noise, reduces air leakage rate, simplifies structure and improves assembly accuracy and fan aerodynamic efficiency.

[0209] It is understandable that the core system of the air purifier 1 is the fan module 510, and the most crucial component of the fan module 510 is the impeller module 512. Its main function is to act on the airflow, converting mechanical energy into dynamic and static pressure. The key factors affecting the impeller module 512 are: blade profile and key impeller design parameters (inlet installation angle, outlet installation angle, number of blades, etc.). Based on this, please refer to... Figure 50 and Figure 51 The wind turbine module 512 in this embodiment includes a chassis 5121, an upper plate 5122, and an impeller 5123.

[0210] The upper plate 5122 and the base plate 5121 are arranged at intervals along the axial direction of the base plate 5121. An air outlet 512a is defined between the upper plate 5122 and the base plate 5121. An air inlet 5122a communicating with the air outlet 512a is formed on the side of the upper plate 5122 facing away from the base plate 5121. An air outlet 512b communicating with the air outlet 512a is formed between the upper plate 5122 and the base plate 5121.

[0211] The external airflow passes through the grille assembly 300 and the filter element 400 and enters the air chamber 512a through the air inlet 5122a. When the blades 51231 rotate, the airflow is thrown out through the air outlet 512b into the impeller chamber 511a, and finally discharged through the first air outlet 511c.

[0212] The impeller 5123 includes multiple blades 51231, which are located in the air chamber 512a. The multiple blades 51231 are distributed circumferentially along the chassis 5121 and connect the chassis 5121 and the upper plate 5122. The blades 51231 are backward-curved blades. Due to the use of backward-curved blades, the entire impeller module 512 has higher aerodynamic efficiency and more stable static pressure output, making it more suitable for high wind resistance filter scenarios.

[0213] In the cross-section of wind turbine module 512, please refer to... Figure 52 The blade 51231 includes a first arc segment 5123a and a second arc segment 5123b connected to each other. In the radial direction of the chassis 5121, the first arc segment 5123a is closer to the axis of the chassis 5121 than the second arc segment 5123b, and the curvature of the first arc segment 5123a is greater than the curvature of the second arc segment 5123b.

[0214] That is, the entire blade 51231 has an arc shape, but the first arc segment 5123a is more curved than the second arc segment 5123b. Thus, the first arc segment 5123a is closer to the axis, and the large curvature surface smoothly receives the axial air intake, reducing airflow impact and turbulence, reducing intake noise. Moreover, the first arc segment 5123a is in the flow channel near the air inlet 5122a, and through a stronger "throwing out" effect, the airflow gains higher energy, thereby increasing pressure.

[0215] The second arc segment 5123b is relatively gentle, which makes the channel between the blades 51231 wider, and the airflow guidance will become smoother. The airflow separation between the blades 51231 is weakened, which can also significantly reduce noise.

[0216] It is understandable that the cross-section of the wind turbine module 512 is a plane perpendicular to the central axis of the chassis 5121.

[0217] In the embodiments of this application, please refer to Figure 51The outer diameter of the wind turbine module 512 is D0, and the inner diameter is D1. The ratio of D1 / D0 satisfies: 0.52 ≤ D1 / D0 ≤ 0.71. The ratio of D1 / D0 can be any two values ​​within the range of 0.52, 0.55, 0.57, 0.59, 0.71, or any two of these values. Within this range, the ratio of inner diameter D1 to outer diameter D0 is appropriate, ensuring sufficient flow area (to meet flow requirements) and sufficient blade length 51231 for pressure output. This results in a reasonable aspect ratio of the internal flow channel of the wind turbine module 512, smooth acceleration and pressurization of the airflow from inlet to outlet, minimal eddy currents and boundary layer separation, minimal internal flow loss, optimal overall efficiency, and suitable airflow. The ratio of D1 / D0 reaches its maximum at 0.57, as shown in Table 1 below.

[0218] Table 1 In one embodiment of this application, please refer to... Figure 52 The radius of the first arc segment 5123a is R1, where R1 / D0 satisfies: 0.36≤R1 / D0≤0.53. The ratio of R1 / D0 can be any two values ​​within the range of 0.36, 0.39, 0.43, 0.48, 0.53, or above. Within this range, it can well fit the inlet airflow angle, and the airflow smoothly adheres to the wall as soon as it enters, with small impact losses, ensuring sufficient airflow. It reaches its maximum when the ratio of R1 / D0 is 0.43, as shown in Table 2 below.

[0219] Table 2 In one embodiment of this application, please refer to... Figure 52 The radius of the second arc segment 5123b is R2, where R2 / D0 satisfies: 0.63≤R2 / D0≤0.81. The ratio of R2 / D0 can be any two values ​​between 0.63, 0.39, 0.71, 0.48, and 0.81. Within this range, the outlet flow channel expands uniformly, the airflow is less prone to separation, the boundary layer is stable, the kinetic energy is converted into pressure energy more fully, resulting in high pressure, high efficiency, low noise, and sufficient airflow. The ratio of R2 / D0 reaches its maximum when it is 0.71, as shown in Table 3 below.

[0220] Table 3 In one embodiment of this application, please refer to... Figure 52Each first arc segment 5123a has one end connecting to the second arc segment 5123b distributed on a first virtual circle. It's important to understand that the end connecting the first arc segment 5123a to the second arc segment 5123b is the endpoint of the first arc segment 5123a. The endpoints of the first arc segments 5123a in the multiple blades 51231 are distributed on the first virtual circle, with a diameter of D2. The ratio D2 / D0 satisfies: 0.76 ≤ D2 / D0 ≤ 0.93. The ratio of D2 / D0 can be 0.76, 0.79, 0.83, 0.87, 0.93, or any other value. The range between any two values ​​indicates that within this range, the first arc segment 5123a is relatively longer, resulting in more efficient intake airflow, while the second arc segment 5123b is relatively shorter, just responsible for outlet diffusion. This means the transition between the first and second arc segments 5123a and 5123b is natural, the transition point is appropriately positioned, and the blade 51231 can smoothly bend the airflow to the diffuser, reducing internal turbulence and noise. This ensures sufficient airflow, reaching its maximum when the D2 / D0 ratio is 0.83, as shown in Table 4 below.

[0221] Table 4 In one embodiment of this application, please refer to Figure 53 Blade 51231 Inlet Installation Angle B 1a Satisfies: 19.8°≤B 1a ≤37.6°, B 1a It can be a range between any two values ​​of 19.8°, 24.3°, 28.6°, 33.2°, 37.6° or higher. Within this range, the airflow impact is small, the flow loss is small, the efficiency is high, the noise is low, and sufficient air volume can be guaranteed, and in B... 1a It reaches its maximum at 28.6°, as shown in Table 5 below:

[0222] Table 5 In another embodiment of this application, please refer to Figure 53 Blade 51231 outlet installation angle B 2a Satisfies: 23.5°≤B 2a ≤51.8°, B 2a It can be a range between any two values ​​of 23.5°, 30.2°, 37.4°, 44.8°, 51.8° or higher. Within this range, the airflow impact is small, the flow loss is small, the efficiency is high, the noise is low, and sufficient air volume can be guaranteed, and in B... 2a It reaches its maximum at 37.4°, as shown in Table 6 below:

[0223] Table 6 In one embodiment of this application, please refer back to the previous section. Figure 50 The air inlet 5122a is generally a round opening with a diameter of D3. The ratio of D3 to D0 satisfies the condition: 0.76 ≤ D3 / D0 ≤ 0.92. That is, the ratio of D3 to D0 can be any two values ​​between 0.76, 0.77, 0.87, 0.92, or any two of the above. Within this range, the air inlet 5122a is a large-diameter air intake design with a large airflow area. Air can enter the impeller 5123 smoothly and efficiently, and a larger air intake volume can be obtained at the same rotation speed. This is beneficial to improving the CADR (Clean Air Delivery Rate) value of the air purifier 1, and ensures that the air intake velocity is moderate, thereby reducing the intake noise from the source.

[0224] In one embodiment of this application, please return and continue reading. Figure 50 The inner wall of the upper plate 5122 is an arc surface protruding towards the wind cavity 512a. In the cross-section of the wind turbine module 512, the arc surface is the third arc segment 5122b, and the radius of the third arc segment 5122b is D4. Among them, D4 / D0 satisfies: 0.09≤D4 / D0≤0.17.

[0225] The inner wall of the upper plate 5122 has an inwardly protruding arc surface that naturally fits the axial air intake direction, so that the airflow from the air inlet 5122a is evenly and gently guided into the blade 51231 channel, avoiding the airflow from directly impacting the inner wall of the upper plate 5122 and generating eddies and impact noise.

[0226] The ratio of D4 / D0 can be any two values ​​between 0.09, 0.12, 0.15, 0.17 or above. Within this range, smooth axial air intake can be achieved, the flow field of the 512a air cavity can be uniform and regular, and the airflow can be free from impact and separation. While improving the fan's intake efficiency and static pressure output, it can significantly reduce intake noise and vibration.

[0227] In one embodiment of this application, please refer to Figure 50The wind turbine module 512 has an axial dimension of H1 on the chassis 5121, and the upper plate 5122 has an axial dimension of H2 on the chassis 5121. The ratio H2 / H1 satisfies: 0.18 ≤ H2 / H1 ≤ 0.41. That is, the ratio H2 / H1 can be any value between 0.18, 0.22, 0.26, 0.33, 0.41, or any two of these values. If the ratio is too small, the upper plate 5122 will be too thin in the axial direction, lacking rigidity and prone to deformation and resonance during high-speed rotation, which will not only generate mechanical vibration and noise. It will also disrupt the flow field of the air cavity 512a, causing aerodynamic noise. If the ratio is too large, the upper plate 5122 will be too thick, increasing the overall weight of the wind turbine module 512. At the same time, it will encroach on the axial space of the air cavity 512a, restricting the installation space of the blades 51231 and affecting the airflow efficiency. Within this range, the upper plate 5122 can be made sufficiently rigid to avoid deformation and vibration, thus achieving a lightweight design of the wind turbine module 512. It can also ensure sufficient air volume, reaching its maximum when the H2 / H1 ratio is 0.26, as shown in Table 7 below.

[0228] Table 7 For further information, please refer to [link / reference]. Figure 49 The inner wall of the volute 511 is provided with a volute tongue 5111. The volute tongue 5111 includes a windward surface 5112, a volute tongue surface 5113 and a diffuser surface 5114 connected in sequence. The windward surface 5112 is configured as part of the cavity wall of the impeller cavity 511a, and the diffuser surface 5114 is configured as part of the cavity wall of the diffuser cavity 511b.

[0229] Among them, the windward surface 5112, as part of the cavity wall of the wind turbine cavity 511a, is adjacent to the outer periphery of the wind turbine module 512. It can receive the high-speed airflow thrown out by the wind turbine module 512 with a smooth curved surface, avoid the airflow directly hitting the sharp edges, and eliminate the turbulence and backflow of the airflow in the gap between the wind turbine module 512 and the volute 511, thereby effectively reducing the airflow impact noise and gap eddy noise.

[0230] The volute tongue 5113 effectively separates the impeller cavity 511a and the diffuser cavity 511b, preventing the airflow in the diffuser cavity 511b from flowing back to the impeller cavity 511a, reducing the vortex intensity and pressure pulsation of the airflow at the volute tongue 5111, thereby effectively weakening high-frequency aerodynamic noise.

[0231] The diffuser surface 5114 directly forms the cavity wall of the diffuser cavity 511b, and smoothly transitions with the diffuser flow channel, so as to smoothly send the airflow after being guided by the volute tongue 5111 into the diffuser cavity 511b, avoiding abrupt changes in airflow direction, flow separation, and separation. Furthermore, due to the outward expansion of the diffuser surface 5114, the cross-sectional area of ​​the diffuser cavity 511b continuously increases along the air outlet direction, ensuring that dynamic pressure is efficiently converted into static pressure.

[0232] It is understood that the volute tongue 5111 is generally a one-piece molded design. Therefore, in the embodiments of this application, the windward surface 5112, the volute tongue surface 5113, and the diffuser surface 5114 are continuous surfaces.

[0233] Please see Figure 54 In the volute 511, and in the cross-section of the impeller module 512, the angle Y1 between the line connecting the two ends of the diffuser surface 5114 and the axis of the first air outlet 511c satisfies: 54.3°≤Y1≤76.8°. The value of Y1 can be 54.3°, 70.5°, 66.4°, 71.3°, 76.8°, or any two of the above values. If Y1 is too small, the diffuser surface 5114 is too flat, the airflow decelerates slowly, the dynamic pressure to static pressure conversion is insufficient, and the static pressure is too low. If Y1 is too large, the diffuser surface 5114 is too steep, the airflow decelerates quickly, and airflow separation and eddies are likely to occur, resulting in increased noise. When Y1 is within the above suitable range, the steepness of the diffuser surface 5114 is moderate, ensuring sufficient diffusion effect and sufficient static pressure, without causing flow separation and whistling due to excessive steepness, and ensuring sufficient airflow, reaching its maximum at 66.4°, as shown in Table 8 below.

[0234] Table 8 In another embodiment, please continue to refer to Figure 54 The volute tongue 5113 is an arc-shaped segment. The angle Y2 between the line connecting the center of the arc segment and the center of the impeller module 512 and the axis of the first air outlet 511c satisfies: 31.6°≤Y2≤62.3°. The value of Y2 can be 31.6°, 38.2°, 45.8°, 53.9°, 62.3° or any two of the above values. If Y2 is too small, the volute tongue 5111 is too close to the impeller 5123, and the clearance is too small. The airflow frequently impacts the volute tongue 5111, generating a sharp, high-frequency whistling sound. If Y2 is too large, the volute tongue 5111 will be too far from the impeller 5123, resulting in excessive clearance, turbulent airflow, and numerous vortices. When Y2 is within the appropriate range, the volute tongue surface 5113 just blocks the backflow of high-pressure air from the diffuser chamber 511b back to the impeller chamber 511a, thus not wasting the established static pressure and ensuring sufficient airflow, reaching its maximum at 45.8°, as shown in Table 9 below.

[0235] Table 9 Specifically, the radius of the arc segment, r2, satisfies: 0.021≤r2 / D0≤0.093. The ratio of r2 / D0 can be 0.021, 0.035, 0.058, 0.078, 0.093, or any two of these values. If the ratio of r2 / D0 is too small, the volute tongue 5113 will be too sharp, and the airflow will violently impact the sharp corner, generating strong high-frequency howling and vortex noise. If the ratio is too large, the volute tongue 5113 will be too blunt, the arc will be too large, the flow splitting boundary will be blurred, and turbulence will easily be generated. When r2 / D0 is within the above-mentioned suitable range, the arc of the volute tongue 5113 is smooth and conforms to the airflow trajectory, reducing airflow impact and stripping, thereby significantly reducing aerodynamic noise.

[0236] Please continue reading. Figure 54 The gap L between the volute tongue surface 5113 and the impeller 5123 of the wind turbine module 512 satisfies: 0.083≤L / D0≤0.163. The ratio of L / D0 can be 0.083, 0.106, 0.126, 0.145, 0.163, or any two of the above values. If the ratio is too small, the gap is too narrow, and the high-speed airflow thrown out by the impeller 5123 will directly and frequently impact the volute tongue surface 5113, producing a sharp high-frequency whistling sound. If the ratio is too large, the gap is too wide, and the airflow will be out of control, easily forming at the gap. The formation of numerous eddies and turbulence leads to a significant reduction in airflow. However, when L / D0 is within the aforementioned suitable range, the airflow smoothly sweeps over the volute tongue 5113 without strong eddies, resulting in a softer fan operation. Furthermore, it effectively prevents the pressurized airflow in the diffuser chamber 511b from flowing back to the impeller chamber 511a, ensuring stable and sufficient static pressure output from the fan. This allows it to reliably overcome the resistance of the filter element 400, preventing airflow attenuation and ensuring purification efficiency. The airflow reaches its maximum at 0.083, but the noise is minimized at 0.126, as shown in Table 10 below.

[0237] Table 10 In one embodiment of this application, please refer to Figure 55 In the cross-section of the wind turbine module 512, the windward surface 5112 includes a first arc-shaped segment 5112a and a second arc-shaped segment 5112b. The first arc-shaped segment 5112a is closer to the volute tongue surface 5113 than the second arc-shaped segment 5112b.

[0238] The radius r3 of the first arc segment 5112a satisfies: 1.08 ≤ r3 / D0 ≤ 1.42. The ratio of r3 / D0 can be any two values ​​between 1.08, 0.035, 0.058, 0.078, and 1.42. If the ratio of r3 / D0 is too small, the first arc segment 5112a will bend too sharply, making the airflow prone to boundary layer separation and vortex formation, increasing aerodynamic noise and pressure loss. If the ratio is too large, the first arc segment 5112a will... If 2a is too gentle, the guiding effect is weak, the airflow is easily disturbed, and the wall adhesion is poor, which cannot effectively protect the volute tongue surface 5113. However, if it is within the above-mentioned suitable range, and r3 / D0 is within the above-mentioned suitable range, the first arc segment 5112a has a gentle and smooth curvature, the airflow can better adhere to the wall and flow, and the noise reduction effect is good. Moreover, the first arc segment 5112a and the volute tongue surface 5113 form a continuous and smooth transition surface, which effectively blocks the backflow of high-pressure airflow and ensures the static pressure stability of the diffuser chamber 511b.

[0239] The central angle Y3 of the first arc segment 5112a satisfies: 6.32°≤Y3≤13.6°. Y3 can be any value between 6.32°, 13.6°, 13.6°, 13.6°, 13.6°, or any two of the above values. If the value of Y3 is too small, the arc length of the first arc segment 5112a is short and the transition is abrupt. The airflow is prone to local sharp turns and boundary layer separation, generating eddies and high-frequency noise. If the value of Y3 is too large, the first arc segment 5112a will be too long, the flow field will be sluggish, and a low-speed dead zone will easily form on the windward side 5112, increasing flow loss and turbulent noise. When Y3 is within the above-mentioned appropriate range, the angle is gentle, the airflow passes smoothly, and the impact and eddies are reduced, thereby ensuring airflow and optimizing noise.

[0240] In one embodiment, the radius r4 of the second arc segment 5112b satisfies: 0.438≤r4 / D0≤0.782. The second arc segment 5112b can form a continuous, non-abrupt flow guide surface with the first arc segment 5112a. The ratio of r4 / D0 can be any two values ​​between 0.438, 0.538, 0.625, 0.782, or above. If the ratio is too small, the second arc segment 5112b will be too steep, and the airflow will easily undergo boundary layer separation and form vortices, increasing turbulence noise and pressure loss. If the ratio is too large, the second arc segment 5112b will be too gentle, with weak flow guide capacity, and will not be able to smoothly enter the diffuser cavity 511b. By ensuring that the ratio of r4 / D0 is within the above-mentioned suitable range, the energy loss of the airflow on the windward surface 5112 can be reduced, allowing more dynamic pressure to be converted into static pressure in the diffuser cavity 511b, and enabling the airflow to smoothly adhere to the wall throughout the entire process, thereby reducing aerodynamic noise.

[0241] The central angle Y4 of the second arc segment 5112b satisfies: 21.3°≤Y4≤46.7°. Y4 can be any value between two of the above two values: 21.3°, 28.7°, 35.2°, 40.2°, 46.7°. If the ratio is too small, the arc length of the second arc segment 5112b is short and the transition is abrupt, making it easy for the airflow to make local sharp turns and boundary layer separation, generating eddies and high-frequency noise. If Y4 is too large, the second arc segment 5112b will be too long, the flow field will be sluggish, and a low-speed dead zone will easily form on the windward side 5112, increasing flow loss and turbulent noise. However, if Y4 is within the above-mentioned appropriate range, the guiding arc length of the windward side 5112 can be moderate, the transition is smooth, and the airflow is regular. This further suppresses eddies, separation, and aerodynamic noise while reducing flow pressure loss.

[0242] In one embodiment of this application, please refer to Figure 54 The outlet opening A of the volute 511 satisfies: 0.063 ≤ A / D0 ≤ 0.196. The ratio of A / D0 can be 0.063, 0.085, 0.111, 0.152, 0.196, or any two of these values. If the ratio is too small, the outlet is too narrow, the airflow is obstructed, the local velocity surges, noise and flow resistance are easily generated, and the air volume is greatly reduced. If the ratio is too large, the outlet is too wide, the airflow diffuses too quickly, the boundary layer separates, vortices are formed, and the static pressure cannot be effectively maintained. When it is within the above suitable range, the outlet opening is reasonably matched with the outer diameter of the impeller module 512, the energy loss of the airflow at the outlet is low, the dynamic pressure can be better converted into static pressure, the noise is relatively low, and sufficient wind pressure can be guaranteed. The optimal value is reached when the ratio of A / D0 is 0.111, as shown in Table 11.

[0243] Table 11 In one embodiment of this application, in the cross-section of the wind turbine module 512, please continue to refer to... Figure 54 The dimension W1 of the first air outlet 511c satisfies: 1.162 ≤ W1 / D0 ≤ 1.385. The ratio of W1 / D0 can be 1.162, 1.232, 1.295, 1.341, 1.385, or any two of these values. If the ratio is too small, the first air outlet 511c is too narrow, resulting in insufficient flow area, high airflow resistance, reduced airflow, and excessively high local velocity, which can easily generate high-frequency whistling. If the ratio is too large, the first air outlet 511c is too wide, resulting in excessively fast airflow diffusion and boundary layer separation, leading to significant static pressure loss and an inability to stably support the 400 resistance of the filter element. Within the appropriate range, the diffused airflow can be discharged evenly and gently, reducing impact and turbulence, further reducing the overall aerodynamic noise from the end, and ensuring that both airflow and static pressure meet the standards. The airflow is optimal when the ratio is 1.295, as shown in Table 12 below.

[0244] Table 12 Furthermore, the throat width W2 of the volute tongue 5111 satisfies: 0.685≤W2 / W1≤0.923. This means the throat width refers to the flow size through the narrowest point of the volute tongue 5111. The ratio W2 / W1 can be any two values ​​between 0.685, 0.772, 0.852, 0.881, 0.932, or any of the above. A reasonable throat width effectively blocks backflow of high-pressure gas, ensuring sufficient static pressure in the fan, easily overcoming the 400 resistance of the purifier filter, and maintaining airflow without reduction. The throat width is coordinated with the size of the first air outlet 511c, ensuring sufficient flow while allowing the airflow to fully complete the dynamic-to-static pressure conversion in the diffuser chamber 511b, resulting in higher aerodynamic efficiency. The optimal airflow occurs when the ratio is 1.295, as shown in Table 13 below.

[0245] Table 13 Please return to the reference. Figure 49 In this embodiment of the application, the housing 100 includes two side housings 110, which are respectively disposed at the first air outlet 511c, and a side air outlet 110a is provided on the side housing 110 at the position corresponding to the first air outlet 511c.

[0246] With two side air outlets 110a exhausting air simultaneously, the total flow area is significantly increased, and the airflow resistance is greatly reduced. This allows for higher air volume at the same rotation speed, directly improving the CADR value of the air purifier 1. The two independent airflows of the dual volutes 511 are each led out from an independent side air outlet 110a, without interference, collision, or mixing. This ensures the dynamic pressure to static pressure conversion efficiency of each diffuser chamber 511b, resulting in more stable static pressure output from the fan. Furthermore, the side shells 110 and the first air outlet 511c are directly connected, with a straight and bend-free flow path. The diffused airflow can be smoothly and without impact discharged from the side air outlets 110a, reducing the possibility of end airflow reversal, eddies, and noise.

[0247] In one possible embodiment, the housing 100 further includes an end plate 130, which connects two side shells 110 and is located at the top of the side shells 110. The end plate 130 is provided with a top air outlet 130a. The fan assembly 500 has a first air outlet 511c and a second air outlet 511d. The first air outlet 511c corresponds to and is connected to the side air outlets 110a, and the second air outlet 511d corresponds to and is connected to the top air outlet 130a.

[0248] In this way, the side air outlet 110a and the top air outlet 130a exhaust air simultaneously, forming a three-dimensional air outlet. The total outflow area is significantly increased, the airflow resistance is extremely small, and a higher air volume can be achieved under the same working conditions, directly improving the CADR value of the air purifier 1, resulting in high purification efficiency and faster air circulation.

[0249] Furthermore, the airflow from the first air outlet 511c to the side air outlet 110a, and from the second air outlet 511d to the top air outlet 130a, is a straight-through connection without sharp turns, ensuring smooth airflow, extremely low pressure loss, and higher aerodynamic efficiency and greater energy saving of the fan.

[0250] In order to prevent foreign objects from entering the air purifier 1 through the side air outlet 110a and the top air outlet 130a, in some embodiments of this application, please refer to [reference needed]. Figure 1 The end plate 130 includes a first grille 131, which is located at the top air outlet 130a. The first grille 131 covers the top air outlet 130a, which can prevent fingers or foreign objects from entering and touching the fan module 510, thereby improving the safety of the whole machine.

[0251] The first grille section 131 can be selected with a square-shaped air outlet, which reduces resistance and prevents foreign objects from falling into the air duct and causing abnormal noise.

[0252] In another embodiment, please refer to Figure 1 The side shell 110 is provided with a second grille 111 at the side air outlet 110a. It can be understood that the entire side shell 110 can be provided with grilles, or the grille can be provided at the side air outlet 110a on the side shell 110, that is, at the position corresponding to the first air outlet 511c. By providing the second grille 111, the air thrown out from the first air outlet 511c can be regulated. The grille bars guide the airflow to form a uniform and stable air outlet surface, avoiding turbulence and additional noise caused by airflow disturbance in the air duct. It can also prevent foreign objects from entering and fingers from sticking in, improving safety and reliability.

[0253] The wind turbine assembly 500 may include one wind turbine module 510 or multiple wind turbine modules 510.

[0254] When a wind turbine module 510 is included, the wind turbine module 510 includes two volutes 511 and a wind turbine assembly. The two volutes 511 cooperate to define a connected wind turbine cavity 511a and two diffuser cavities 511b. The two diffuser cavities 511b are located on opposite sides of the wind turbine cavity 511a. The side of each diffuser cavity 511b away from the wind turbine cavity 511a forms a first air outlet 511c, which corresponds to the side air outlets 110a on the two side shells 110 respectively. The wind turbine assembly is housed in the wind turbine cavity 511a. The two volutes 511 are spaced apart along the circumference of the wind turbine assembly so that the airflow passes through the wind turbine assembly in sequence and is thrown out from the first air outlet 511c and the second air outlet 511d.

[0255] Furthermore, in this embodiment, the two volutes 511 do not completely enclose the impeller, but are arranged circumferentially at intervals, with a second air outlet 511d directly left at the top. After the airflow is thrown out from the impeller, part of it naturally rises and is discharged to the outside through the path from the second air outlet 511d to the top air outlet 130a, while part of it goes through the diffuser chambers 511b on both sides and is discharged to the outside through the path from the first air outlet 511c to the side air outlet 110a. The flow is split without baffles 821, without bends, and without additional wind resistance, resulting in extremely high air volume utilization.

[0256] Among them, such as Figure 49 As shown, the first air outlet 511c can be extended to the side air outlet 110a. By extending the first air outlet 511c to the side air outlet 110a, the first air outlet 511c of the fan module 510 and the side air outlet 110a of the whole machine are seamlessly connected, which effectively reduces wind resistance and airflow noise, reduces air leakage rate, simplifies structure and improves assembly accuracy and fan aerodynamic efficiency.

[0257] Since the air is discharged from the side and top, in this embodiment, when the fan assembly 500 includes at least two fan modules 510, adjacent fan modules 510 are separated by a support member, and the fan module 510 adjacent to the end plate 130 has a second air outlet 511d. That is, the lower fan module 510 focuses on supplying the side air outlet 110a to ensure horizontal full-range circulation, while the top fan module 510 supplies both the side air outlet 110a and the top air outlet 130a. The upper fan module 510 is close to the end plate 130, and the second air outlet 511d is directly connected to the top air outlet 130a. This minimizes wind resistance and static pressure loss and maximizes the utilization rate of the top air volume. Therefore, in this embodiment, by distributing multiple fan modules 510 vertically, flexible air volume configuration is achieved, the overall purification capacity is improved, and airflow interference and vibration transmission between fan modules 510 are effectively avoided, ensuring the aerodynamic efficiency of each fan module 510.

[0258] Since only the upper fan module 510 is provided with a second air outlet 511d, the two volutes 511 in the upper fan module 510 include a first volute 5111 located near the end plate 130. One end of the first volute 5111 is connected to a side shell 110, and the other end of the first volute 5111 is spaced apart from the other side shell 110 to form the second air outlet 511d.

[0259] That is, the upper fan module 510 adjacent to the end plate 130 directly forms the second air outlet 511d by connecting one end of the first volute 511 to the side shell 110 and separating the other end from the opposite side shell 110. No additional structure such as additional guide plate or connecting air duct is required. The formation of the second air outlet 511d is easier and the cost is relatively low.

[0260] Furthermore, in one embodiment of this application, such as Figure 49 As shown, along the arrangement direction of the two side shells 110, the size of the second air outlet 511d does not exceed the size of the two ends of the first volute 511, and preferably the two sizes are approximately the same. In this way, while ensuring that the first volute 511 can effectively guide and diffuse the airflow, the air volume of the entire air purifier 1 can also be guaranteed.

[0261] Based on the filter element bracket 120 being located on the air inlet side of the fan module 510, and the air inlet 100c being provided at the front end of the housing 100, the integrated layout of the filter element bracket 120 on the air inlet side of the fan module 510 forms a forward positioning of the air inlet 100c. At the same time, the side air outlet 110a, the top air outlet 130a, and the air inlet 100c form a clear spatial interval and staggered distribution in the front-back direction of the whole machine. Structurally, the direct return path of the air outlet and the air inlet is cut off. That is, the side air outlet 110a, the top air outlet 130a, and the air inlet 100c are separated front and back. After the clean air is discharged, it will not be immediately re-inhaled by the air inlet 100c, reducing the possibility of short circulation and ineffective filtration of purified air. This ensures that the fan module 510 draws in as much unpurified indoor air as possible, and the overall purification efficiency of the machine does not decrease.

[0262] In one embodiment of this application, please refer back to the previous section. Figure 3 The housing 100 also includes a duct support 160 and a fan support 170. The duct support 160 can be installed inside the fan support 170, and the fan support 170 can fix the motor in the fan module 510. The duct support 160 can form a duct to guide the air purified from the grille assembly 300 and the filter element 400 into the fan module 510. In addition, the side shell 110 can be integrally formed with the fan support 170 to ensure the structural strength of both the housing 100 and the fan support 170.

[0263] Please return to the reference. Figure 3The housing 100 also includes a rear housing 180 and a bottom cover 190. Thus, the panel 150, end plate 130, rear housing 180 and bottom cover 190 can form a chamber to accommodate the filter element support 120, the air duct support 160 and the fan support 170, and can protect the filter element support 120, the air duct support 160 and the fan support 170.

[0264] Please see Figure 48 In one embodiment of this application, a mesh cover 121 is formed on the side of the filter element support 120 facing the fan module 510. The mesh cover 121 is located at the air inlet of the fan module 510. In this way, the mesh cover 121 can provide physical protection for the air inlet of the fan module 510, preventing foreign objects from entering the fan module 510. It can also uniformly and regulate the airflow through the filter element 400, ensuring uniform airflow into the fan module 510. In addition, since the mesh cover 121 is on the side of the filter element support 120 facing the fan module 510, that is, it is integrally formed with the entire filter element support 120, it can also enhance the local structural rigidity of the filter element support 120 and reduce vibration and resonance noise.

[0265] Please see Figure 56 Based on the aforementioned grille assembly 300 arching towards the air inlet 100d to form a raised portion 300a, and given that the grille assembly 300 includes an air intake grille 310 and a filter 320, the raised portion 300a is actually formed by the arching of the air intake grille 310 towards the air intake. Since the raised portion 300a can smoothly guide and direct the airflow entering the air intake grille 310, preventing the airflow from directly impacting the edge of the air intake grille 310, and regulating the intake airflow field, reducing intake turbulence and eddies, and because the design of this raised portion 300a further affects the parameters of the entire fan module 510, such as airflow, in one embodiment of this application, please refer to... Figure 56 In the cross-section of the wind turbine module 512, the side of the air intake grille 310 facing away from the wind turbine module 510 is the fourth arc segment 310b, and the radius Rq of the fourth arc segment 310b satisfies: 1.324 ≤ Rq. q / D0≤1.831, where R q The ratio / D0 is a value between any two of the following: 1.324, 1.521, 1.611, 1.725, 1.831, or a value between any two of these values.

[0266] If the ratio is too small, the fourth arc segment 310b will be too steep, causing a sharp turn in the airflow intake path, which can easily lead to boundary layer separation, eddies, and high-frequency whistling. If the ratio is too large, the arc surface will be too gentle, resulting in weak guiding effect, turbulent and uneven airflow, and reduced fan intake efficiency. Within the appropriate range, the curvature of the fourth arc segment 310b is gentle, allowing the airflow to smoothly enter along the arc surface and adhere to the wall, reducing impact and flow separation, significantly reducing intake noise, and effectively balancing airflow volume. Furthermore, within the R... qThe ratio of / D0 reaches its maximum at 1.611, as shown in Table 14 below:

[0267] Table 14 In another embodiment, the central angle Yq of the fourth arc segment 310b satisfies: 34.2°≤Y q ≤68.3°, Yq value is a value within the range of 34.2°, 43.2°, 51.6°, 60.1°, 68.3° or any two of the above values, if Y q The size is too small, the fourth arc segment 310b is too short and the transition is abrupt, the airflow is prone to sharp turns and generating separation vortices, increasing intake noise. If Y q If the diameter is too large, the fourth arc segment 310b will extend too far, easily forming an intake dead zone, increasing intake resistance, and reducing airflow. However, if it is within the appropriate range, the intake channel will contract gently, ensuring uniform airflow while minimizing intake losses, thus balancing airflow and achieving optimal performance in the Y region. q The optimal airflow is 51.6°, as shown in Table 15 below:

[0268] Table 15 In one embodiment, please refer to Figure 56 The straight-line distance D between the two ends of the raised portion 300a facing the wind turbine module 510 L Satisfy: 1.02≤D L / D0≤1.26,D L The ratio / D0 can be any two values ​​between 1.02, 1.07, 1.11, 1.19, 1.26, or higher. If the ratio is too small, the inner diameter of the raised part 300a will be too narrow, resulting in insufficient air intake cross-section, severe airflow contraction, a sharp increase in air intake resistance, and a decrease in air volume. If the ratio is too large, the inner diameter will be too wide, exceeding the effective air intake range of the fan module 510, which can easily lead to edge leakage, airflow divergence, and deflection, reducing the fan's air intake utilization rate. Within the above-mentioned suitable range, the airflow can enter the fan completely and uniformly, resulting in the highest aerodynamic efficiency. Furthermore, the air volume is optimal at a ratio of 1.11, as shown in Table 16 below.

[0269] Table 16 Furthermore, such as Figure 56 and Figure 57As shown, the entire mesh cover 121 also arches towards the air inlet. Utilizing the arc-shaped surface of the mesh cover 121 arching towards the air inlet, the filtered airflow is actively gathered and smoothly guided, directing the airflow precisely into the air inlet 5122a of the fan module 510. Therefore, in one embodiment of this application, in the cross-section of the impeller module 512, the side of the mesh cover 121 facing away from the fan module 510 is the fifth arc segment 121a, and the radius R of the fifth arc segment 121a is... h Satisfies: 0.408≤R h / D0≤0.782, where R h The ratio / D0 is a value between any two of the following: 0.408, 0.512, 0.611, 0.692, 0.782, or any two of the above.

[0270] If the ratio is too small, the fifth arc segment 121a will be too steep and the arch will be too high, making it easy for the airflow to separate into boundary layers and form vortices, increasing the airflow impact noise. If the ratio is too large, the fifth arc segment 121a will be too gentle and the arch will not be obvious, resulting in poor airflow guidance and gathering effects, and easy airflow dispersion. However, within the above-mentioned suitable range, the fifth arc segment 121a has a gentle curvature, and the airflow is evenly attached to the wall along the arched arc surface and smoothly merges into the fan module 510, with minimal airflow disturbance. The airflow transitions naturally from the outside to the inside, significantly reducing airflow resistance and ensuring that the airflow does not decrease. The ratio reaches its maximum when it is 1.611, as shown in Table 17 below.

[0271] Table 17 In another embodiment, please refer to Figure 57 The central angle Y of the fifth arc segment 121a h Satisfies: 72.3°≤Y h ≤93.5°, Y h The value is a range between any two values ​​of 72.3°, 77.2°, 81.2°, 87.6°, 93.5° or higher. If Y h The size is too small, and the fifth arc segment 121a does not cover enough, resulting in insufficient airflow convergence, which easily leads to flow deviation and edge turbulence, increasing intake noise. If Y h If the arc is too large, the fourth arc segment 310b will be too long, easily forming an intake dead zone, increasing intake resistance and reducing airflow. However, if it is within the appropriate range, the airflow smoothly enters the fan module 510 with minimal intake disturbance, thus balancing airflow and Y... h The optimal airflow is achieved at a temperature of 81.2°C, as shown in Table 18 below:

[0272] Table 18 Furthermore, in the cross-section of the wind turbine module 512, please refer to... Figure 57The straight-line distance D between the two ends of the side of the mesh cover 121 facing the wind turbine module 510 r Satisfies: 0.632≤D r / D0≤0.912,D r The ratio / D0 can be 0.632, 0.728, 0.825, 0.861, 0.912, or any two of these values. If the ratio is too small, the inner diameter is too narrow, the airflow contracts sharply, the intake resistance increases sharply, throttling and whistling occur, and the airflow decreases significantly. If the ratio is too large, the diameter is too wide, the airflow diverges and cannot concentrate into the center of the fan module 510, resulting in low intake utilization. Within the above range, the airflow converges smoothly and accurately into the fan, resulting in the highest intake efficiency. The airflow is optimal when the ratio is 0.825, as shown in Table 19 below.

[0273] Table 19 Please continue reading. Figure 57 In one embodiment of this application, the maximum distance H between the side of the raised portion 300a facing away from the mesh cover 121 and the side of the mesh cover 121 facing away from the raised portion 300a is... L Satisfies: 0.632≤H L / D0≤0.856,H L The ratio / D0 can be 0.632, 0.692, 0.748, 0.798, 0.856, or any two of these values. If the ratio is too small, the arch height of the 300a section will be insufficient, resulting in a small airflow buffer space, a rapid convergence transition, and a tendency to generate boundary layer separation, eddies, and intake whistling. If the ratio is too large, the arch will be too high, occupying too much space and easily forming an airflow dead zone, increasing intake resistance and reducing intake efficiency. Within the above range, the arch height of the 300a section is appropriate, allowing the airflow to gradually converge, smoothly adhere to the wall, reduce impact and separation, and significantly reduce intake disturbance and noise.

[0274] In another embodiment, the distance Hr between the mesh cover 121 and the wind turbine module 512 satisfies: 0.037 ≤ Hr r / D0≤0.125, where H r The ratio / D0 can be 0.037, 0.058, 0.082, 0.116, 0.125 or any two values ​​above. If the ratio is too small, the distance between the mesh cover 121 and the wind turbine module 512 will be too narrow, making assembly difficult. Especially when there is a wind duct support 160 between the mesh cover 121 and the wind turbine module 512, the wind duct support 160 is prone to scratching. If the ratio is too large, the gap between the mesh cover 121 and the impeller module 512 will be too wide, which will not only make the entire air purifier 1 larger in size, but also make the airflow prone to eddies, leaks, and turbulence at the gap, reducing the concentration of air intake and the efficiency of the fan. However, within the above-mentioned suitable range, it can ensure contactless safe operation and allow the airflow to converge evenly into the fan module 510, ensuring the air volume. Moreover, the air volume is the largest when the ratio is 0.082, as shown in Table 20 below:

[0275] Table 20 Based on the above design, the noise of the wind turbine module 510 during operation can be significantly reduced. However, in order to further reduce the noise of the wind turbine module 510 during operation, in one embodiment of this application, please refer to... Figure 58 A sound-absorbing cavity 100a is formed between the outer wall of the fan module 510 and the inner wall of the housing 100. A sound-absorbing part 700 is provided in the sound-absorbing cavity 100a. A sound-absorbing hole 511e is provided on the volute 511, which connects the sound-absorbing cavity 100a, the impeller cavity 511a, and the diffuser cavity 511b.

[0276] The sound-absorbing hole 511e is directly connected to the ventilation wheel cavity 511a and the diffuser cavity 511b. Aerodynamic noise such as the turbulent flow of the impeller 5123 and the airflow pulsation of the diffuser cavity 511b can be directly introduced into the sound-absorbing cavity 100a through the sound-absorbing hole 511e, and efficiently absorbed by the sound-absorbing part 700, cutting off the propagation path from the point of noise generation.

[0277] In addition, the sound-absorbing hole 511e is only used for sound conduction and does not occupy the effective flow area of ​​the impeller cavity 511a and the diffuser cavity 511b. The airflow does work normally and the flow is not affected. While achieving noise reduction, it ensures that the air volume, static pressure and aerodynamic efficiency of the fan module 510 are not reduced. On the other hand, the sound-absorbing cavity 100a forms a vibration isolation and sound insulation sandwich between the fan module 510 and the shell 100, weakening the transmission of the vibration of the fan module 510 to the shell 100, avoiding the resonance of the shell 100 to amplify the noise, and achieving dual suppression of aerodynamic noise and structural noise.

[0278] Furthermore, the sound-absorbing part 700 includes a plurality of sound-absorbing panels 710 spaced apart along the arrangement direction of the two side shells 110. The plurality of sound-absorbing panels 710 are staggered, so that the plurality of sound-absorbing panels 710 can form a tortuous labyrinthine sound path within the sound-absorbing cavity 100a. After noise enters through the sound-absorbing holes, it needs to be reflected, refracted and bypassed multiple times, and the noise energy is rapidly and significantly attenuated, which has a highly efficient suppression effect on mid-low frequency and high frequency aerodynamic noise.

[0279] The sound-absorbing panel 710 can be made of foam, such as polyurethane foam or expanded polypropylene foam, or other sound-absorbing materials such as sound-absorbing cotton or sound-absorbing pads. In this embodiment, expanded polypropylene foam is preferred. Its internal continuous porous foam structure has a strong ability to absorb noise from the fan module 510. It is also a rigid, high-elastic foam that is both rigid and tough. When connected to the housing 100, it can be used directly as a support frame and staggered sound-absorbing panels 710. It does not deform or leak air after long-term use.

[0280] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A wind turbine module, characterized in that, include: Chassis; An upper plate, spaced axially from the chassis, defines an air outlet cavity between the upper plate and the chassis. An air inlet communicating with the air outlet cavity is formed on the side of the upper plate facing away from the chassis. An air outlet communicating with the air outlet cavity is formed between the upper plate and the chassis. An impeller includes multiple blades located within the air chamber. The multiple blades are distributed circumferentially along the chassis and connect the chassis and the upper plate. The blades are backward-curved blades. In the cross-section of the wind turbine module, the blade includes a first arc segment and a second arc segment connected to each other. In the radial direction of the chassis, the first arc segment is closer to the axis of the chassis than the second arc segment, and the curvature of the first arc segment is greater than the curvature of the second arc segment.

2. The wind turbine module according to claim 1, characterized in that, The outer diameter of the impeller is D0. The radius of the first arc segment is R1, where R1 / D0 satisfies: 0.36≤R1 / D0≤0.53; And / or, the radius of the second arc segment is R2, where R2 / D0 satisfies: 0.63≤R2 / D0≤0.

81.

3. The wind turbine module according to claim 1, characterized in that, The outer diameter of the impeller is D0. The inner diameter of the impeller is D1, where D1 / D0 satisfies: 0.52≤D1 / D0≤0.71; And / or, one end of each of the first arc segments connecting to the second arc segment is distributed on a first virtual circle, the diameter of the first virtual circle being D2, wherein D2 / D0 satisfies: 0.76≤D2 / D0≤0.93; And / or, the diameter of the air inlet is D3, wherein D3 / D0 satisfies: 0.76≤D3 / D0≤0.92; And / or, the inner wall surface of the upper plate is an arc surface protruding towards the wind cavity, and in the cross-section of the wind turbine module, the arc surface is a third arc segment with a radius of D4, wherein D4 / D0 satisfies: 0.09≤D4 / D0≤0.

17.

4. The wind turbine module according to claim 1, characterized in that, The blade inlet installation angle B 1a Satisfies: 19.8°≤B 1a ≤37.6°; And / or, the blade outlet installation angle B 2a Satisfies: 23.5°≤B 2a ≤51.8°.

5. The wind turbine module according to claim 1, characterized in that, The wind turbine module has a dimension H1 in the axial direction of the chassis, and the upper plate has a dimension H2 in the axial direction of the chassis, wherein H2 / H1 satisfies: 0.18≤H2 / H1≤0.

41.

6. An air purifier, characterized in that, include: At least two wind turbine modules, the at least two wind turbine modules being vertically distributed, the wind turbine modules comprising: Two volutes cooperate to define a connected impeller cavity and two diffuser cavities, and the side of each diffuser cavity away from the impeller cavity forms a first air outlet; The wind turbine module according to any one of claims 1-5 is housed in the wind turbine cavity, and the two volutes are arranged circumferentially spaced along the wind turbine module so that the airflow passes through the wind turbine module in sequence and is thrown out from the first air outlet.

7. The air purifier according to claim 6, characterized in that, The inner wall of the volute is provided with a volute tongue, which includes a windward surface, a volute tongue surface and a diffuser surface connected in sequence. The windward surface is configured as part of the cavity wall of the impeller cavity, and the diffuser surface is configured as part of the cavity wall of the diffuser cavity.

8. The air purifier according to claim 7, characterized in that, In the cross-section of the wind turbine module, The angle Y1 between the line connecting the two ends of the diffuser surface and the axis of the first air outlet satisfies: 54.3°≤Y1≤76.8°; And / or, the volute tongue surface is an arc segment, and the angle Y2 between the line connecting the center of the arc segment and the center of the impeller module and the axis of the first air outlet satisfies: 31.6°≤Y2≤62.3°.

9. The air purifier according to claim 7, characterized in that, The outer diameter of the impeller in the wind turbine module is D0. The volute tongue surface is an arc segment, and the radius of the arc segment is r2, which satisfies: 0.021≤r2 / D0≤0.093; And / or, the clearance L between the volute tongue and the impeller of the wind turbine module satisfies: 0.083≤L / D0≤0.

163.

10. The air purifier according to claim 7, characterized in that, The impeller outer diameter of the wind turbine module is D0. In the cross-section of the wind turbine module, the windward surface includes a first arc-shaped segment and a second arc-shaped segment. The first arc-shaped segment is closer to the volute tongue surface than the second arc-shaped segment. The radius r3 of the first arc segment satisfies: 1.08 ≤ r3 / D0 ≤ 1.42; And / or, the central angle Y3 of the first arc segment satisfies: 6.32°≤Y3≤13.6°; And / or, the radius r4 of the second arc segment satisfies: 0.438≤r4 / D0≤0.782; And / or, the central angle Y4 of the first arc segment satisfies: 21.3°≤Y4≤46.7°.

11. The air purifier according to claim 7, characterized in that, The outer diameter of the impeller in the wind turbine module is D0. The outlet opening A of the volute satisfies: 0.063≤A / D0≤0.196; And / or, in the cross-section of the wind turbine module, the size W1 of the first air outlet satisfies: 1.162 ≤ W 1 / D0≤1.385, and the width W2 of the throat of the cochlea satisfies: 0.685≤W2 / W1≤0.

923.

12. The air purifier according to claim 6, characterized in that, The air purifier also includes a housing, and the fan module is disposed inside the housing; The fan module has a first air outlet on each of its opposite sides. The housing includes two side shells, which are respectively disposed at the first air outlet. A side air outlet is provided on each side shell at the position corresponding to the first air outlet.

13. The air purifier according to claim 12, characterized in that, A sound-absorbing cavity is formed between the outer wall of the fan module and the inner wall of the housing. A sound-absorbing part is provided in the sound-absorbing cavity. A sound-absorbing hole is provided on the volute that connects the sound-absorbing cavity, the impeller cavity, and the diffuser cavity.

14. The air purifier according to claim 13, characterized in that, The sound-absorbing part includes a plurality of sound-absorbing panels spaced apart along the arrangement direction of the two side shells, the plurality of sound-absorbing panels being staggered and connected to the shell.

15. The air purifier according to claim 12, characterized in that, The housing includes a filter element bracket located on the air inlet side of the fan module. The filter element bracket has a mounting cavity and a side mounting port communicating with the mounting cavity. The air purifier also includes a filter element, which is detachably mounted in the mounting cavity through the side mounting port.

16. The air purifier according to claim 15, characterized in that, The air purifier also includes an air intake grille, which is located on the side of the filter element bracket away from the fan module. The air intake grille is arched in the direction of air intake to form a raised portion. A mesh cover is formed on the side of the filter element bracket facing the fan module, and the mesh cover is located at the air intake of the fan module.

17. The air purifier according to claim 16, characterized in that, In the cross-section of the wind turbine module, the side of the raised portion facing away from the wind turbine module is the fourth arc segment. The outer diameter of the impeller in the wind turbine module is D0, and the radius of the fourth arc segment is R. q Satisfies: 1.324≤R q / D0≤1.831; And / or, the central angle Y of the fourth arc segment q Satisfies: 34.2°≤Y q ≤68.3°.

18. The air purifier according to claim 16, characterized in that, In the cross-section of the wind turbine module, the side of the mesh cover facing away from the wind turbine module is the fifth arc segment. The outer diameter of the impeller in the wind turbine module is D0, and the radius of the fifth arc segment is R. h Satisfies: 0.408≤R h / D0≤0.782; And / or, the central angle Y of the fifth arc segment h Satisfies: 72.3°≤Y h ≤93.5°.

19. The air purifier according to claim 16, characterized in that, The outer diameter of the impeller in the wind turbine module is D0. In the cross-section of the wind turbine module... The straight-line distance D between the two ends of the raised portion facing the wind turbine module L Satisfy: 1.02≤D L / D0≤1.26; And / or, the straight-line distance D between the two ends of the side of the mesh facing the wind turbine module r Satisfies: 0.632≤D r / D0≤0.

912.

20. The air purifier according to claim 16, characterized in that, The outer diameter of the impeller in the wind turbine module is D0, and along the axial direction of the wind turbine module... The maximum distance H between the side of the raised portion away from the mesh cover and the side of the mesh cover away from the raised portion is... L Satisfies: 0.632≤H L / D0≤0.856; And / or, the distance H between the mesh cover and the wind turbine module r Satisfies: 0.037≤H r / D0≤0.125.

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