Air purifier

Abstract

The utility model discloses an air purifier belongs to ventilation machinery technical field. The air purifier includes: equipment casing, fan assembly, first air outlet unit and second air outlet unit, wherein, equipment casing has positive air outlet and top surface air outlet, and first air outlet unit includes rotatable first air outlet grille and first flow guide structure, and second air outlet unit includes rotatable second air outlet grille and second flow guide structure. In this way, through two opening direction different air outlet and four place rotation structure, can realize multiple air outlet mode, also can adjust the air outlet angle freely through rotating first air outlet grille and second air outlet grille, improves the use comfort. In addition, through the included angle between the linkage control flow guide structure and corresponding air outlet grille, adapt to multiple air outlet mode, can reduce local flow loss and turbulence intensity to improve the sound quality and purification energy efficiency of air purifier.

Description

Technical Field

[0001] This utility model relates to the field of ventilation machinery technology, and in particular to an air purifier. Background Technology

[0002] With societal development, people have increasingly higher demands for air quality. Air purifiers are devices that remove pollutants from indoor air (such as particulate matter, formaldehyde, odors, bacteria, etc.) and improve air quality. As public health awareness grows and the pursuit of a high-quality living environment increases, air purifiers are widely used in homes, offices, shopping malls, factories, and other places.

[0003] Currently, air purifiers typically consist of a housing containing a fan assembly and a filter assembly. The housing has an air inlet for drawing in air to be purified and an air outlet for expelling clean air. The basic working process of an air purifier is as follows: the fan assembly draws indoor air into the purifier through the air inlet, purifies it by passing through the filter assembly, and then returns it to the room through the air outlet. This cycle repeats to create a healthy breathing environment.

[0004] However, because the air outlet direction of the aforementioned air purifiers is fixed, the airflow direction is not flexible, resulting in poor space circulation and purification effects. Utility Model Content

[0005] This utility model embodiment provides an air purifier, the technical solution of which is as follows: The air purifier includes: a housing, a fan assembly, a first air outlet unit, and a second air outlet unit; The equipment housing has a side air inlet and adjacent front and top air outlets; The fan assembly is installed inside the equipment housing; The first air outlet unit includes a first air outlet grille and a first air guide structure. The first air outlet grille is rotatably installed at the front air outlet, and the first air guide structure is rotatably disposed on the inner side of the first air outlet grille. The second air outlet unit includes a second air outlet grille and a second air guide structure. The second air outlet grille is rotatably installed at the air outlet on the top surface, and the second air guide structure is rotatably disposed on the inner side of the second air outlet grille.

[0006] Optionally, the air purifier further includes a first synchronization mechanism and a second synchronization mechanism; The first synchronization mechanism is connected to the first air outlet grille and the first air guide structure respectively. The first synchronization mechanism is used to drive the first air outlet grille and the first air guide structure to rotate synchronously. The second synchronization mechanism is connected to the second air outlet grille and the second air guide structure respectively, and the second synchronization mechanism is used to drive the second air outlet grille and the second air guide structure to rotate synchronously.

[0007] Optionally, both the first air vent grille and the second air vent grille can rotate between a fully open position and a fully closed position; When the first air outlet grille is fully open, the front air outlet is in the maximum air outlet state; when the second air outlet grille is fully open, the top air outlet is in the maximum air outlet state. When the first air outlet grille is fully closed, the front air outlet is in a closed air outlet state; when the second air outlet grille is fully closed, the top air outlet is in a closed air outlet state.

[0008] Optionally, the first flow guiding structure includes a first flow guiding blade, and the second flow guiding structure includes a second flow guiding blade; When the first air outlet grille is fully open, the first guide vane is in a first guiding state that guides the airflow from the front air outlet. When the first air outlet grille is fully closed, the first guide vane is in a second guiding state that guides the airflow from the top air outlet. When the second air outlet grille is fully open, the second air guide structure is in the third air guide state, guiding the airflow from the top air outlet. When the second air outlet grille is fully closed, the second air guide structure is in the fourth air guide state, guiding the airflow from the front air outlet.

[0009] Optionally, the second air outlet grille includes a plurality of parallel grille panels; The grille includes vertical sections and inclined sections arranged along the air outlet direction. The vertical sections and the inclined sections are fixedly connected, and there is an obtuse angle between the inclined sections and the vertical sections.

[0010] Optionally, the air purifier further includes a flow-diverting structure located between the front air outlet and the top air outlet, and the cross-section of the flow-diverting structure is tapered toward the fan assembly; The flow splitting structure has a leading arc-shaped surface, a trailing outer surface, a first side surface, and a second side surface. The first side surface and the second side surface face the front air outlet and the top air outlet, respectively. The trailing outer surface is located on the side of the flow splitting structure away from the fan assembly and is connected to the first side surface and the second side surface, respectively. The leading arc-shaped surface is disposed opposite to the trailing outer surface and is connected to the first side surface and the second side surface, respectively.

[0011] Optionally, the fan assembly includes a fan structure and a volute structure; The volute structure has a receiving part and an arc-shaped air duct part. The receiving part is covered on the outside of the fan structure. The arc-shaped air duct part is located between the receiving part and the front air outlet and the top air outlet. One end of the arc-shaped air duct part is connected to the receiving part, and the other end is connected to the front air outlet and the top air outlet. The first flow guiding structure and the second flow guiding structure are located in the arc-shaped air duct section.

[0012] Optionally, the fan structure includes a dual-inlet fan, and the side air inlet includes a first side air inlet and a second side air inlet disposed opposite to each other on both sides of the equipment housing.

[0013] Optionally, the air purifier further includes a filter assembly, the volute structure having a receiving groove on the side facing the side air inlet, the opening of the receiving groove communicating with the side air inlet, the bottom of the receiving groove having a vent, the vent communicating with the air inlet of the fan structure, and the filter assembly being installed in the receiving groove.

[0014] Optionally, the air purifier further includes a first drive assembly and a second drive assembly, wherein the first drive assembly is connected to the first air outlet unit to drive the first air outlet unit to rotate, and the second drive assembly is connected to the second air outlet unit to drive the second air outlet unit to rotate. Both the first drive component and the second drive component include a manual drive mechanism or an electric drive mechanism.

[0015] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: An air purifier is provided, comprising a housing, a fan assembly, a first air outlet unit, and a second air outlet unit. The housing has a side air inlet and adjacent front and top air outlets. The first air outlet unit includes a rotatable first air outlet grille and a rotatable first air guide structure. The second air outlet unit includes a rotatable second air outlet grille and a rotatable second air guide structure. Thus, through two air outlets with different opening directions and four rotating structures, multiple air outlet modes—front air outlet mode, top air outlet mode, and mixed air outlet mode—can be achieved. The air outlet angle can be freely adjusted by rotating the first and second air outlet grilles, improving user comfort. Furthermore, the relative angle between the air guide structure and the air outlet grille can be adjusted to switch between a gentle breeze mode and a strong breeze mode. In addition, by controlling the angle between the air guide structure and the corresponding air outlet grille, local flow loss and turbulence intensity can be reduced, thereby improving the air purifier's sound quality and purification efficiency. Simultaneously, it can improve the airflow circulation path to avoid airflow short-circuiting, improving the overall purification efficiency of the air purifier. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an air purifier provided in an embodiment of the present invention; Figure 2 yes Figure 1 The diagram shows an exploded structure of an air purifier. Figure 3 yes Figure 1 A schematic diagram of the air purifier from another perspective; Figure 4 yes Figure 3 The diagram shows a cross-sectional structure of an air purifier along the A1-A2 position; Figure 5 This is a schematic diagram of the connection structure between a first synchronization mechanism and a second synchronization mechanism provided in an embodiment of this utility model; Figure 6 This is a cross-sectional structural diagram of another air purifier provided in this embodiment of the utility model; Figure 7 This is a cross-sectional structural diagram of another air purifier provided in this embodiment of the utility model; Figure 8 yes Figure 3 The diagram shows a cross-sectional structure of an air purifier along the B1-B2 position.

[0018] Explanation of reference numerals in the attached figures: Equipment housing 11, front air outlet k1, top air outlet k2, front panel 111, back panel 112, top plate 113, bottom plate 114, left side plate 115, right side plate 116, side air inlet k3, first side air inlet k311, second side air inlet k32; fan assembly 12, fan structure 121, drive motor 1211, centrifugal impeller 1212, volute structure 122, receiving part 1221, arc-shaped air duct part 1222; first air outlet unit 13, first air outlet grille 131, first air guide structure 132, first... Guide vane 1321; second air outlet unit 14, second air outlet grille 141, grille plate 1411, vertical section b1, inclined section b2, second guide structure 142, second guide vane 1421, preset included angle α; first synchronization mechanism 15, first rack 151, drive gear 152, first driven gear 153, second driven gear 154; second synchronization mechanism 16; control component 17; flow splitting structure 18, leading edge arc surface 181, trailing edge outer surface 182, first side surface 183, second side surface 184; filter assembly 19. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0021] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0022] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0023] Air purifiers in related technologies often suffer from a fixed air outlet direction during manufacturing, resulting in a single airflow trajectory and an inability to create effective and diverse airflow organization schemes to suit different application scenarios. In practical applications, air purifiers cannot flexibly respond to dynamically changing usage scenarios (such as large-space circulation versus precise localized airflow) and personalized user preferences (such as avoiding direct airflow at night or catering to specific seating positions). For example, air purifiers cannot achieve multiple airflow modes or adjust the angle to avoid direct airflow when needed, leading to low flexibility and a poor user experience.

[0024] This utility model provides an air purifier that can solve some or all of the technical problems in related technologies.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a structural schematic diagram of an air purifier provided in an embodiment of the present invention. Figure 2 yes Figure 1 The diagram shown is an exploded structural diagram of an air purifier. Figure 3 yes Figure 1 The diagram shown is a structural schematic of an air purifier from another perspective. Figure 4 yes Figure 3 The diagram shown is a cross-sectional view of an air purifier along the A1-A2 section. It can be understood that... Figure 4 The black arrows in the diagram indicate the direction of gas flow. An air purifier may include: a housing 11, a fan assembly 12, a first air outlet unit 13, and a second air outlet unit 14.

[0026] The device housing 11 has a side air inlet k3 and adjacent front air outlet k1 and top air outlet k2. For example, the device housing 11 can be hexahedral, and can have a front panel 111 and a back panel 112, a top plate 113 and a bottom plate 114, and a left side plate 115 and a right side plate 116 arranged opposite each other. The front panel 111 and the top plate 113 are perpendicular and connected. The front air outlet k1 can be located on the front panel 111, and the top air outlet k2 can be located on the top plate 113. The front air outlet k1 and the top air outlet k2 can be arranged adjacent to each other; for example, the front air outlet k1 is located at the top of the front panel 111, and the top air outlet k2 is located at the front end of the top plate 113. The air purifier in this embodiment can be used as a desktop air purifier, placed on a desktop or bedside table for user use. During use, the air outlet k1 on the front of the device housing 11 can face the user.

[0027] The fan assembly 12 is installed inside the equipment housing 11; the air inlet of the fan assembly 12 is connected to the side air inlet k3 of the equipment housing 11, and the air outlet of the fan assembly 12 is connected to the front air outlet k1 and the top air outlet k2.

[0028] The first air outlet unit 13 may include a first air outlet grille 131 and a first air guide structure 132. The first air outlet grille 131 is rotatably mounted at the front air outlet k1, and the first air guide structure 132 is rotatably disposed inside the first air outlet grille 131. The second air outlet unit 14 may include a second air outlet grille 141 and a second air guide structure 142. The second air outlet grille 141 is rotatably mounted at the top air outlet k2, and the second air guide structure 142 is rotatably disposed inside the second air outlet grille 141. The first air outlet grille 131, the first air guide structure 132, the second air outlet grille 141, and the second air guide structure 142 can all be rotatably connected to the equipment housing 11.

[0029] In one exemplary embodiment, the air intake path of the air purifier can be as follows: external airflow enters the fan assembly 12 inside the device housing 11 through the side air inlet k3, and flows through the first guide structure 132 and the second guide structure 142 respectively under the drive of the fan assembly 12, and then flows out through the first air outlet grille 131 and the second air outlet grille 141.

[0030] The air purifier in this embodiment of the invention can achieve diverse air outlet modes by installing a rotatable first air outlet grille 131 and a second air outlet grille 141 at the front air outlet k1 and the top air outlet k2, respectively. For example, the diverse air outlet modes may include a front air outlet mode, a top air outlet mode, and a mixed air outlet mode. The front air outlet mode is suitable for precise air delivery and can quickly improve the air quality in the breathing zone. The top air outlet mode realizes circulation diffusion and promotes a large-scale gentle circulation of indoor air. In the mixed air outlet mode, the front air outlet k1 and the top air outlet k2 can work together to comprehensively improve the purification efficiency of the whole house.

[0031] During the use of the air purifier, users can freely adjust the air outlet angle by rotating the first air outlet grille 131 and the second air outlet grille 141, which can prevent the air purifier from blowing directly on the user and improve the user's comfort during sleep and prolonged sitting.

[0032] Furthermore, this embodiment of the invention, through the rotatable first guide structure 132 and second guide structure 142, enables precise control of airflow quality and direction. For example, by adjusting the relative angle between the guide structure (first guide structure 132 or second guide structure 142) and the air outlet grille (first air outlet grille 131 or second air outlet grille 141), a gentle breeze mode or a strong breeze mode can be switched. When the angle between the guide structure and the air outlet grille increases, the airflow will diffuse after impacting the guide structure, forming a gentle breeze mode with a wider flow field and slower speed, suitable for scenarios requiring comfortable airflow at close range. When the angle between the guide structure and the air outlet grille decreases, the airflow can be concentrated and delivered to the air outlet grille, forming a strong breeze with a faster speed, suitable for scenarios requiring directional and rapid purification.

[0033] Furthermore, by adaptively rotating the first guide structure 132 and the second guide structure 142, the system's wind resistance and turbulence intensity can be reduced, thereby reducing aerodynamic noise and fan energy consumption. At the same time, the air outlet direction can be adaptively adjusted, thereby reducing airflow short-circuiting between the inlet and outlet, extending the circulation path of clean air in the room, and improving the overall purification efficiency of the air purifier.

[0034] In summary, this utility model embodiment provides an air purifier including a housing 11, a fan assembly 12, a first air outlet unit 13, and a second air outlet unit 14. The housing 11 has a side air inlet k3 and adjacent front air outlet k1 and top air outlet k2. The first air outlet unit 13 may include a rotatable first air outlet grille 131 and a rotatable first air guide structure 132. The second air outlet unit 14 may include a rotatable second air outlet grille 141 and a rotatable second air guide structure 142. Thus, through two air outlets with different opening directions and four rotating structures, multiple air outlet modes, including front air outlet mode, top air outlet mode, and mixed air outlet mode, can be achieved. Furthermore, the air outlet angle can be freely adjusted by rotating the first air outlet grille 131 and the second air outlet grille 141, improving user comfort. It can also switch between gentle wind mode and strong wind mode by adjusting the relative angle between the air guide structure and the air outlet grille. In addition, by adaptively adjusting the angle between the air guide structure and the corresponding air outlet grille, the system wind resistance and turbulence intensity can be reduced, thereby reducing aerodynamic noise and fan energy consumption. At the same time, it can also optimize the airflow path to avoid airflow short circuits and improve the overall purification efficiency of the air purifier.

[0035] In an optional embodiment, the air purifier may further include a first adjustment knob and a first transmission assembly. The first adjustment knob is connected to the first air outlet grille 131 via the first transmission assembly. The first transmission assembly may include a gear. The first air outlet grille 131 may include multiple grille plates and a linkage rod. Each of the multiple grille plates is rotatably connected to the device housing 11 via a rotating shaft. The grille plates are fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the device housing, and the linkage rod is connected to the front end of the multiple grille plates. For example, the first adjustment knob may be located on the outside of the device housing 11. The first adjustment knob can be connected to the rotating shaft via a gear. Rotating the first adjustment knob can drive the gear to rotate, thereby driving the rotating shaft and the grille plates to rotate, and then driving the multiple grille plates to rotate around the rotating shaft via the linkage rod. Similarly, the driving structures of the second air outlet grille 141, the first airflow guiding structure 132, and the second airflow guiding structure 142 may be the same as or similar to the driving structure of the first air outlet grille 131. This embodiment of the present invention will not elaborate on these aspects. The angle adjustment of the air outlet grille and the air guide structure can also be achieved through the linkage rod, cam and other structures in related technologies. This utility model embodiment does not limit this.

[0036] Please refer to Figure 5 , Figure 5 This is a schematic diagram of the connection structure of a first synchronization mechanism 15 and a second synchronization mechanism 16 provided in an embodiment of the present invention. In an optional embodiment, the air purifier may further include a first synchronization mechanism 15 and a second synchronization mechanism 16; the first synchronization mechanism 15 is connected to the first air outlet grille 131 and the first air guide structure 132 respectively, and the first synchronization mechanism 15 is used to drive the first air outlet grille 131 and the first air guide structure 132 to rotate synchronously; the second synchronization mechanism 16 is connected to the second air outlet grille 141 and the second air guide structure 142 respectively, and the second synchronization mechanism 16 is used to drive the second air outlet grille 141 and the second air guide structure 142 to rotate synchronously.

[0037] Thus, the air outlet grille (first air outlet grille 131 or second air outlet grille 141) and the inner guide structure (first guide structure 132 or second guide structure 142) are linked through a synchronization mechanism (first synchronization mechanism 15 or second synchronization mechanism 16), thereby achieving a single-point input and dual synchronous output adjustment method. The user only needs to adjust the angle of the air outlet grille, and the synchronization mechanism will synchronously drive the guide structure to adjust its angle accordingly. This ensures that the air outlet direction of the air outlet grille and the airflow guidance angle of the guide structure maintain a preset matching relationship, thereby forming a stable and efficient airflow; at the same time, it simplifies the user's operating logic and improves the user experience.

[0038] In one exemplary embodiment, the first synchronization mechanism 15 may include a first linkage rod 151, a drive gear 152, a first driven gear 153, and a second driven gear 154. The first linkage rod 151 is movably connected to the front end of a plurality of grille plates of the first air outlet grille 131. The plurality of grille plates are rotatably connected to the device housing 11 through a plurality of first rotating shafts. The first driven gear 153 may be fixedly connected to one of the plurality of first rotating shafts. The first flow guiding structure 132 may be rotatably connected to the device housing 11 through a second rotating shaft. The second driven gear 154 may be fixedly connected to the second rotating shaft. The drive gear 152 may be located between the first driven gear 153 and the second driven gear 154, and mesh with the first driven gear 153 and the second driven gear 154 respectively. When the user adjusts the air outlet angle of the first air outlet grille 131, the drive gear 152 can be rotated to drive the first driven gear 153 and the second driven gear 154 to rotate synchronously, thereby driving the first rotating shaft and the second rotating shaft to rotate synchronously, and thus driving the grille pieces and the first guide structure 132 to rotate synchronously. Since multiple grille pieces are connected by the first linkage rod 151, multiple grille pieces can rotate synchronously under the drive of the first driven gear 153. The structures of the second synchronization mechanism 16 and the first synchronization mechanism 15 can be the same or similar. This embodiment of the present invention does not limit this. Synchronous drive can also be achieved through linkage rods, cams, or other structures in related technologies. This embodiment of the present invention does not limit this. For example, the drive gear 152 can be driven by manually rotating a knob or by a drive motor. This embodiment of the present application does not limit this.

[0039] Please refer to Figure 4 In one exemplary embodiment, the air purifier may further include a control component 17, a plurality of drive motors 1211 and a plurality of transmission mechanisms. The plurality of drive mechanisms are connected to the first air outlet grille 131, the first air guide structure 132, the second air outlet grille 141 and the second air guide structure 142 through the plurality of transmission mechanisms. By pre-storing an angle adjustment program in the control component 17, synchronous driving of the air outlet grille and the air guide structure can be achieved.

[0040] Please refer to Figure 4 , Figure 6 and Figure 7 , Figure 6 This is a cross-sectional structural diagram of another air purifier provided in this embodiment of the utility model. Figure 7 This is a cross-sectional structural diagram of another air purifier provided in this embodiment of the present invention, wherein, Figure 4 In the air purifier shown, both the first air outlet grille 131 and the second air outlet grille 141 are fully open. Figure 6In the air purifier shown, the first air outlet grille 131 is fully closed, and the second air outlet grille 141 is fully open. Figure 7 In the air purifier shown, the first air outlet grille 131 is fully open, and the second air outlet grille 141 is fully closed. In one optional embodiment, both the first and second air outlet grilles 131 can rotate between the fully open and fully closed positions. When the first air outlet grille 131 is fully open, the front air outlet k1 is in the maximum airflow state, and when the second air outlet grille 141 is fully open, the top air outlet k2 is in the maximum airflow state. When the first air outlet grille 131 is fully closed, the front air outlet k1 is in the closed airflow state, and when the second air outlet grille 141 is fully closed, the top air outlet k2 is in the closed airflow state. The closed airflow state indicates that the air outlet grille covers and seals the corresponding air outlet. By controlling the first and second air outlet grilles 131 to be in different combinations of fully open, fully closed, or both positions, the air purifier can form different airflow modes, thereby improving its applicability.

[0041] It is understandable that when the first air outlet grille 131 is fully open and the second air outlet grille 141 is fully closed, the front air outlet k1 can be in the state of maximum air volume; similarly, when the first air outlet grille 131 is fully closed and the second air outlet grille 141 is fully open, the top air outlet k2 can be in the state of maximum air volume.

[0042] For example, when the first air vent grille 131 is in the fully closed position, the front end of the first air vent grille 131 is located above its rear end, and when the second air vent grille 141 is in the fully closed position, the front end of the second air vent grille 141 is located in front of its rear end.

[0043] Please refer to Figure 4 , Figure 6 and Figure 7In one optional embodiment, the first airflow guiding structure 132 includes a first airflow guiding blade 1321, and the second airflow guiding structure includes a second airflow guiding blade 1421. When the first air outlet grille 131 is fully open, the first airflow guiding blade 1321 is in a first guiding state, guiding airflow from the front air outlet k1. When the first air outlet grille 131 is fully closed, the first airflow guiding blade 1321 is in a second guiding state, guiding airflow from the top air outlet k2. When the second air outlet grille 141 is fully open, the second airflow guiding structure 142 is in a third guiding state, guiding airflow from the top air outlet k2. When the second air outlet grille 141 is fully closed, the second airflow guiding structure 142 is in a fourth guiding state, guiding airflow from the front air outlet k1. Thus, when any air outlet grille is opened or closed, its corresponding airflow guiding blade automatically switches to a preset angle, ensuring that the airflow is always guided to the correct air outlet. This enables intelligent allocation and precise guidance of airflow paths, optimizes the internal flow field of the air purifier, reduces wind resistance and energy loss, and improves the overall air output efficiency.

[0044] In one exemplary embodiment, when the first air outlet grille 131 is in the fully open position, the extension direction of the first guide vane 1321 is parallel to the opening direction of the front air outlet k1; when the first air outlet grille 131 is in the fully closed position, the extension direction of the first guide vane 1321 and the opening direction of the front air outlet k1 form an acute angle; when the second air outlet grille 141 is in the fully open position, the extension direction of the second guide vane 1421 and the opening direction of the front air outlet k1 form an acute angle; when the second air outlet grille 141 is in the fully closed position, the extension direction of the second guide vane 1421 is parallel to the opening direction of the front air outlet k1.

[0045] It is understandable that when the second air outlet grille 141 is in the fully open position, the extension direction of the second guide vane 1421 is set to have a preset angle α with the opening direction of the top air outlet k2. This can actively guide the outflow of air generated by the fan assembly 12, making it transition more smoothly to the external space, thereby avoiding vortices and flow separation caused by abrupt changes in airflow direction at the outlet edge. This can reduce airflow noise, reduce energy loss, and improve airflow efficiency. For example, the preset angle α can be in the range of 45° to 80°, such as 45°, 55°, 60°, 70°, or 80°. The extension direction of the second guide vane 1421 can refer to the direction of the shortest line connecting the point at the foremost edge and the point at the rearmost edge of the second guide vane 1421 in the airflow direction.

[0046] In one exemplary embodiment, both the first air outlet grille 131 and the second air outlet grille 141 are in a fully open state or an intermediate state, which is between the fully open state and the fully closed state. That is, both the front air outlet k1 and the top air outlet k2 are in the air outlet state. By adjusting the first air guiding structure 132 and the second air guiding structure 142, the air volume of the front air outlet k1 and the top air outlet k2 can be made close to 1:1. At this time, the air purifier has a better purification effect on the entire space.

[0047] Please refer to Figure 5 In one optional embodiment, the second air outlet grille 141 may include a plurality of parallel grille plates 1411; the grille plates 1411 include vertical sections b1 and inclined sections b2 arranged along the air outlet direction, with an obtuse angle between the vertical sections b1 and the inclined sections b2. This allows a guide surface to be formed at the second air outlet grille 141, guiding the top airflow upwards. In an exemplary embodiment, the vertical sections b1 and inclined sections b2 may be an integrally formed structure.

[0048] Please refer to Figure 5 In an optional embodiment, the air purifier may further include a diversion structure 18 located between the front air outlet k1 and the top air outlet k2, with the cross-section of the diversion structure 18 tapered towards the fan assembly. The diversion structure 18 has a leading-edge arcuate surface 181, a trailing-edge outer surface 182, a first side surface 183, and a second side surface 184. The first side surface 183 and the second side surface 184 face the front air outlet k1 and the top air outlet k2, respectively. The trailing-edge outer surface 182 is located on the side of the diversion structure 18 away from the fan assembly 12 and is connected to the first side surface 183 and the second side surface 184, respectively. The leading-edge arcuate surface 181 and the trailing-edge outer surface 182 are opposite to each other and are connected to the first side surface 183 and the second side surface 184, respectively. The trailing-edge outer surface 182 may also be arcuate. The diversion structure 18 can smoothly divert the airflow from the fan assembly 12 to the front air outlet k1 and the top air outlet k2.

[0049] Please refer to Figure 2 and Figure 4 In one optional embodiment, the fan assembly 12 may include a fan structure 121 and a volute structure 122; the volute structure 122 has a receiving portion 1221 and an arc-shaped air duct portion 1222, the receiving portion 1221 is covered on the outside of the fan structure 121, the arc-shaped air duct portion 1222 is located between the receiving portion 1221 and the front air outlet k1 and the top air outlet k2, and one end of the arc-shaped air duct portion 1222 is connected to the receiving portion 1221, and the other end is connected to the front air outlet k1 and the top air outlet k2; the first flow guiding structure 132 and the second flow guiding structure 142 are located in the arc-shaped air duct portion 1222.

[0050] The fan structure 121 may include a drive motor 1211 and a centrifugal impeller 1212. The drive motor 1211 drives the centrifugal impeller 1212 to rotate, generating suction to draw airflow axially and radially into the volute structure 122. Due to the large back pressure of the fan structure 121 during operation, the airflow near the volute tongue of the volute structure 122 is prone to backflow. Furthermore, the significant difference between the cross-sectional area at the air inlet and outlet of the arc-shaped duct section 1222 can easily lead to insufficient airflow diffusion, resulting in uneven wind speed distribution. By setting a first guide structure 132 and a second guide structure 142 in the outlet section of the arc-shaped duct section 1222, the backflow near the volute tongue can be reduced. Simultaneously, the airflow in the arc-shaped duct section 1222 is slowed and diffused, resulting in a more uniform wind speed at the outlet of the arc-shaped duct section 1222, thereby reducing noise at the outlet.

[0051] Please refer to Figure 2 , Figure 4 and Figure 8 , Figure 8 yes Figure 3 The diagram shows a cross-sectional structure of an air purifier along the B1-B2 position. In one optional embodiment, the fan structure 121 includes a dual-inlet fan, and the side air inlets k3 include a first side air inlet k3 and a second side air inlet k32 disposed opposite to each other on both sides of the device housing 11. This enables the air purifier to achieve bidirectional air intake and bidirectional air exhaust functions, thereby improving the overall performance of the air purifier.

[0052] Please refer to Figure 2 , Figure 4 and Figure 8 In an optional embodiment, the air purifier may further include a filter assembly 19. The volute structure 122 has a receiving groove on the side facing the side air inlet k3. The opening of the receiving groove communicates with the side air inlet k3, and the bottom of the receiving groove has a vent that communicates with the air inlet of the fan structure 121. The filter assembly 19 is installed in the receiving groove. For example, the filter assembly 19 may include a high efficiency particulate air (HEPA) filter, a HEPA filter with activated carbon composite filter, a formaldehyde removal filter, or an electrostatic dust removal filter, etc. The filter assembly 19 may be a pull-out filter element that can be replaced by pulling it out through the side opening of the receiving groove.

[0053] In one optional embodiment, the air purifier may further include a first drive assembly and a second drive assembly. The first drive assembly is connected to a first air outlet unit to drive the first air outlet unit to rotate, and the second drive assembly is connected to a second air outlet unit to drive the second air outlet unit to rotate. Both the first and second drive assemblies include a manual drive mechanism or an electric drive mechanism. When the first and second drive assemblies are electric drive mechanisms, both the first and second drive assemblies may include a drive motor and a transmission mechanism driven by the drive motor.

[0054] It should be noted that the dimensions of the areas may have been exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element is referred to as "on top of" another element, it can be directly on the other element, or there may be intermediate elements. Additionally, it is understood that when an element is referred to as "below" another element, it can be directly below the other element, or there may be more than one intermediate element. Furthermore, it is also understood that when an element is referred to as "between" two elements, it can be the only layer between the two elements, or there may be more than one intermediate element. Similar reference numerals throughout indicate similar elements.

[0055] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0056] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air purifier, characterized in that, include: Equipment housing, fan assembly, first air outlet unit and second air outlet unit; The equipment housing has a side air inlet and adjacent front and top air outlets; The fan assembly is installed inside the equipment housing; The first air outlet unit includes a first air outlet grille and a first air guide structure. The first air outlet grille is rotatably installed at the front air outlet, and the first air guide structure is rotatably disposed on the inner side of the first air outlet grille. The second air outlet unit includes a second air outlet grille and a second air guide structure. The second air outlet grille is rotatably installed at the air outlet on the top surface, and the second air guide structure is rotatably disposed on the inner side of the second air outlet grille.

2. The air purifier according to claim 1, characterized in that, The air purifier also includes a first synchronization mechanism and a second synchronization mechanism; The first synchronization mechanism is connected to the first air outlet grille and the first air guide structure respectively. The first synchronization mechanism is used to drive the first air outlet grille and the first air guide structure to rotate synchronously. The second synchronization mechanism is connected to the second air outlet grille and the second air guide structure respectively, and the second synchronization mechanism is used to drive the second air outlet grille and the second air guide structure to rotate synchronously.

3. The air purifier according to claim 2, characterized in that, Both the first air vent grille and the second air vent grille can rotate between the fully open and fully closed positions; When the first air outlet grille is fully open, the front air outlet is in the maximum air outlet state; when the second air outlet grille is fully open, the top air outlet is in the maximum air outlet state. When the first air outlet grille is fully closed, the front air outlet is in a closed air outlet state; when the second air outlet grille is fully closed, the top air outlet is in a closed air outlet state.

4. The air purifier according to claim 3, characterized in that, The first flow guiding structure includes a first flow guiding blade, and the second flow guiding structure includes a second flow guiding blade; When the first air outlet grille is fully open, the first guide vane is in a first guiding state that guides the airflow from the front air outlet. When the first air outlet grille is fully closed, the first guide vane is in a second guiding state that guides the airflow from the top air outlet. When the second air outlet grille is fully open, the second air guide structure is in the third air guide state, guiding the airflow from the top air outlet. When the second air outlet grille is fully closed, the second air guide structure is in the fourth air guide state, guiding the airflow from the front air outlet.

5. The air purifier according to claim 1, characterized in that, The second air outlet grille includes multiple parallel grille panels; The grille includes vertical sections and inclined sections arranged along the air outlet direction. The vertical sections and the inclined sections are fixedly connected, and there is an obtuse angle between the inclined sections and the vertical sections.

6. The air purifier according to claim 1, characterized in that, The air purifier also includes a flow divider structure located between the front air outlet and the top air outlet, and the cross-section of the flow divider structure is tapered towards the fan assembly. The flow splitting structure has a leading arc-shaped surface, a trailing outer surface, a first side surface, and a second side surface. The first side surface and the second side surface face the front air outlet and the top air outlet, respectively. The trailing outer surface is located on the side of the flow splitting structure away from the fan assembly and is connected to the first side surface and the second side surface, respectively. The leading arc-shaped surface is disposed opposite to the trailing outer surface and is connected to the first side surface and the second side surface, respectively.

7. The air purifier according to claim 1, characterized in that, The wind turbine assembly includes a wind turbine structure and a volute structure; The volute structure has a receiving part and an arc-shaped air duct part. The receiving part is covered on the outside of the fan structure. The arc-shaped air duct part is located between the receiving part and the front air outlet and the top air outlet. One end of the arc-shaped air duct part is connected to the receiving part, and the other end is connected to the front air outlet and the top air outlet. The first flow guiding structure and the second flow guiding structure are located in the arc-shaped air duct section.

8. The air purifier according to claim 7, characterized in that, The fan structure includes a dual-inlet fan, and the side air inlets include a first side air inlet and a second side air inlet disposed opposite to each other on both sides of the equipment housing.

9. The air purifier according to claim 7, characterized in that, The air purifier also includes a filter assembly. The volute structure has a receiving groove on the side facing the side air inlet. The opening of the receiving groove is connected to the side air inlet. The bottom of the receiving groove has a vent. The vent is connected to the air inlet of the fan structure. The filter assembly is installed in the receiving groove.

10. The air purifier according to claim 1, characterized in that, The air purifier further includes a first drive assembly and a second drive assembly. The first drive assembly is connected to the first air outlet unit to drive the first air outlet unit to rotate, and the second drive assembly is connected to the second air outlet unit to drive the second air outlet unit to rotate. Both the first drive component and the second drive component include a manual drive mechanism or an electric drive mechanism.

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