Air purifier

Abstract

The utility model discloses an air purifier and belongs to the technical field of air purifiers. The air purifier comprises an equipment shell, a centrifugal wind wheel and a volute. By the adoption of the volute with the single centrifugal wind wheel and the double air outlets, the flowing path of airflow in a volute runner can be shortened, the flowing loss of the airflow in the volute can be reduced, the air outlet amount is increased, and therefore the efficiency of the air purifier can be improved, and the noise of the whole air purifier is lower. In addition, due to the double air outlets of the air purifier, indoor airflow circulation can be faster, and the purification efficiency is higher. In addition, the air inlet through hole can be in an hourglass shape, airflow separation loss of the air inlet section can be reduced, the effect of speed reduction and pressure diffusion is achieved, and the air inlet amount is increased. The airflow flows through the hourglass-shaped air inlet through hole to be quickly diffused, so that the uniformity of the airflow entering the equipment shell can be improved.

Description

Technical Field

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

[0002] With societal development, people have increasingly higher demands for air quality. Currently, air purifiers are devices used to remove pollutants (such as particulate matter, formaldehyde, odors, bacteria, etc.) from indoor air and improve air quality. Air purifiers are widely used in homes, offices, shopping malls, factories, and other places.

[0003] Air purifiers typically consist of a housing and a drive motor, impeller, and filter assembly located within the housing. The housing has an air inlet and an air outlet. The drive motor rotates the impeller, allowing outside air to enter the housing through the air inlet. The air then passes through the filter assembly to adsorb pollutants from the air. The filtered air then flows out of the housing's air outlet to the outside environment, driven by the impeller, thus achieving air purification.

[0004] However, current air purifiers have low airflow and high noise levels, resulting in low efficiency. Utility Model Content

[0005] This utility model provides an air purifier. The technical solution is as follows:

[0006] The air purifier includes: a housing, a centrifugal impeller, and a volute.

[0007] The equipment housing has a front air inlet plate and two opposite side air outlet plates. The two ends of the front air inlet plate are respectively connected to the two side air outlet plates, and the plate surface of the front air inlet plate intersects with the plate surface of the side air outlet plates. The front air inlet plate has multiple air inlet holes, and the side air outlet plates have multiple air outlet holes.

[0008] The volute is installed in the equipment housing. The volute has an air inlet and two opposite air outlets. The air inlet is connected to the plurality of air inlet holes, and the two air outlets are respectively connected to the plurality of air outlet holes on the two side air outlet plates.

[0009] The centrifugal impeller is installed in the volute;

[0010] The centrifugal impeller's axis is perpendicular to the surface of the front air inlet plate, and the diameter of the plurality of air inlet holes gradually decreases and then gradually increases along a first direction, which is parallel to the axis of the centrifugal impeller.

[0011] Optionally, the air inlet hole includes a first hole section and a second hole section that are connected, wherein the first hole section is located on the side of the second hole section that is away from the centrifugal impeller;

[0012] Along the direction from the top air outlet plate toward the centrifugal impeller, the diameter of the first hole section gradually decreases, and the diameter of the second hole section gradually increases;

[0013] The wall of the first hole segment is arc-shaped, and the wall of the second hole segment is curved.

[0014] Optionally, the ratio between the radius of the arc surface and the minimum diameter of the air inlet hole ranges from 0.12 to 0.13;

[0015] The angle between the shortest connection between the two ends of the curved surface and the axis of the air inlet hole is in the range of 7° to 10°, and the axis of the air inlet hole is parallel to the axis of the centrifugal impeller.

[0016] Optionally, the volute includes a receiving section, a flow-rectifying grille, and two arc-shaped air duct sections;

[0017] The receiving part is covered on the outside of the centrifugal impeller, and the receiving part has the air inlet on the side near the front air inlet plate;

[0018] The rectifier grille is installed at the air inlet of the housing;

[0019] The two arc-shaped air ducts are located on both sides of the receiving part, the first end of the arc-shaped air duct is connected to the receiving part, and the second end of the arc-shaped air duct is provided with the air outlet.

[0020] Optionally, in a direction perpendicular to the axis of the centrifugal impeller, the width of the arc-shaped air duct gradually increases from the first end of the arc-shaped air duct to the second end of the arc-shaped air duct.

[0021] Optionally, the air purifier further includes an isolation support frame and a filter assembly;

[0022] The isolation support frame is located between the volute and the front air inlet plate, and is fixedly connected to the volute and the equipment housing respectively. The isolation support frame has a receiving groove on the side facing the front air inlet plate, and the bottom of the receiving groove has a ventilation opening, which is connected to the air inlet.

[0023] The filter assembly is located in the receiving groove.

[0024] Optionally, the isolation support frame and the volute are an integral structure.

[0025] Optionally, the device housing also has a rear encapsulation plate disposed opposite to the front air inlet plate;

[0026] The encapsulation base plate has multiple mounting slots on the side opposite to the front air inlet plate. These mounting slots are used to connect with a bracket to install the air purifier on the wall.

[0027] Optionally, the air purifier further includes a cord storage compartment, and the device housing also has two opposing side encapsulation plates, the two ends of which are respectively connected to the two side air outlet plates.

[0028] The wire storage compartment is located in the device housing and is mounted on one of the two side encapsulation plates.

[0029] Optionally, the ratio of the shortest distance between the centrifugal impeller and the volute tongue of the volute to the outer diameter of the centrifugal impeller 12 is greater than or equal to 0.075;

[0030] The ratio of the radius of the volute tongue to the outer diameter of the centrifugal impeller is greater than or equal to 0.05;

[0031] The volute has a collector at its air inlet. The ratio of the shortest distance between the rear end face of the collector and the front end face of the centrifugal impeller to the outer diameter of the centrifugal impeller is in the range of 0.02 to 0.03.

[0032] The technical solution provided by this utility model embodiment can produce at least the following beneficial effects:

[0033] This utility model provides an air purifier comprising a housing, a centrifugal impeller, and a volute. The housing has multiple air inlet holes on its front air inlet plate and multiple air outlet holes on its two opposite side air outlet plates. The volute is installed within the housing, with its air inlet communicating with the multiple air inlet holes and its two air outlets communicating with the multiple air outlet holes on the two side air outlet plates, respectively. The centrifugal impeller is installed within the volute. By employing a volute with a single centrifugal impeller and dual air outlets, the airflow path within the volute is shortened, reducing airflow losses and increasing the air volume, thereby improving the air purifier's efficiency and reducing overall noise. Furthermore, the dual air outlets of the air purifier allow for faster indoor air circulation and higher purification efficiency.

[0034] Furthermore, the air inlet can be hourglass-shaped, which reduces airflow separation losses and deceleration / pressurization effects in the air inlet section, thereby increasing the air intake volume. Airflow passing through the hourglass-shaped air inlet is rapidly diffused, improving the uniformity of the airflow entering the equipment housing. Attached Figure Description

[0035] 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.

[0036] Figure 1 This is a schematic diagram of the structure of an air purifier provided in an embodiment of the present invention;

[0037] Figure 2 yes Figure 1 A schematic diagram of the air purifier from another perspective;

[0038] Figure 3 yes Figure 2 The diagram shows a cross-sectional structure of an air purifier along the A1-A2 position;

[0039] Figure 4 yes Figure 1 A schematic diagram of the air purifier from another perspective;

[0040] Figure 5 yes Figure 4 The diagram shows a cross-sectional structure of an air purifier along the B1-B2 position;

[0041] Figure 6 yes Figure 1 The diagram shows an exploded structure of an air purifier.

[0042] Figure 7 This is a schematic diagram of gas flow in an air purifier provided in an embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the simulation results of the hourglass-shaped air inlet in an embodiment of this utility model;

[0044] Figure 9 This is a schematic diagram of the simulation results for a straight-tube type air inlet.

[0045] Figure 10 This utility model provides a structural schematic diagram of a volute and an isolation support frame;

[0046] Figure 11 yes Figure 10 The diagram shows another perspective of the volute and isolation support frame.

[0047] Figure 12 This is a structural schematic diagram of an isolation support frame and a filter assembly provided in an embodiment of the present invention;

[0048] Figure 13 This is a schematic diagram of another air purifier provided in this embodiment of the utility model;

[0049] Figure 14 This is a structural schematic diagram of a device housing and wire storage compartment provided in an embodiment of the present utility model;

[0050] Figure 15 yes Figure 14 The diagram shows an exploded view of the equipment housing and wire storage compartment. Detailed Implementation

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] Air purification equipment plays a vital role in environmental purification and health protection. Generally, air purifiers can be categorized into floor-standing, built-in, and wall-mounted types. Floor-standing air purifiers occupy a larger area; built-in air purifiers require ceiling mounting or cabinet integration, making installation and maintenance more difficult; wall-mounted air purifiers can be suspended on the wall, saving floor space and avoiding interference with user movement. However, wall-mounted air purifiers typically use a single-sided air intake and exhaust system with straight air intake holes, resulting in poor aerodynamic performance and less effective indoor air circulation, thus affecting overall purification. Furthermore, some products exhibit whistling noises at high speeds, impacting the user experience. Aerodynamic performance refers to the efficiency of an air purifier during airflow, and evaluation indicators include airflow volume, air pressure, and airflow uniformity.

[0056] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 1 This is a schematic diagram of the structure of an air purifier 10 provided in an embodiment of the present invention. Figure 2 yes Figure 1 The diagram shows another view of the air purifier 10. Figure 3 yes Figure 2 The diagram shows a cross-sectional structure of the air purifier 10 along the A1-A2 position. Figure 4 yes Figure 1 The diagram shows another view of the air purifier 10. Figure 5 yes Figure 4 The diagram shows a cross-sectional structure of the air purifier 10 along the B1-B2 position. Figure 6 yes Figure 1 The diagram shows an exploded view of an air purifier 10, which may include: a housing 11, a centrifugal impeller 12, and a volute 13.

[0057] The equipment housing 11 has a front air inlet plate 111 and two opposite side air outlet plates 112. The two ends of the front air inlet plate 111 are respectively connected to the two side air outlet plates 112, and the plate surface of the front air inlet plate 111 intersects with the plate surface of the side air outlet plates 112. The front air inlet plate 111 is provided with multiple air inlet holes k1, and the side air outlet plates 112 are provided with multiple air outlet holes k2.

[0058] The shape of the device housing 11 may include a cuboid. The device housing 11 may include a front air inlet plate 111 and a rear encapsulation plate 114 arranged opposite to each other. Both the front air inlet plate 111 and the rear encapsulation plate 114 may be rectangular. The device housing 11 may also include two side air outlet plates 112 and two side encapsulation plates 113 arranged opposite to each other. The side air outlet plates 112 and the side encapsulation plates 113 may be bolted to the rear encapsulation plate 114. The front air inlet plate 111 may be bolted to or snapped onto the side air outlet plates 112 and the side encapsulation plates 113. Alternatively, the front air inlet plate 111 may be bolted to the rear encapsulation plate 114.

[0059] The front air inlet plate 111, the back encapsulation plate 114, the two side air outlet plates 112 and the two side air outlet plates 112 can form the equipment housing 11 so that the equipment housing 11 has a receiving space, and the volute 13 and the centrifugal impeller 12 can both be located in the receiving space.

[0060] The volute 13 is installed in the equipment housing 11. The volute 13 has an air inlet k3 and two opposite air outlets k4. The air inlet k3 is connected to multiple air inlet holes k1, and the two air outlets k4 are respectively connected to multiple air outlet holes k2 on the two side air outlet plates 112. The centrifugal impeller 12 is installed in the volute 13.

[0061] The centrifugal impeller 12 may include: multiple identical impeller blades, a rear plate and a front plate arranged opposite each other, with the multiple identical impeller blades located between the front plate and the rear plate, and both ends of the impeller blades fixedly connected to the front plate and the rear plate, respectively. The multiple impeller blades are arranged around the axis of the centrifugal impeller 12, and the impeller blades may be curved. The impeller blades are used to draw airflow in axially through rotation, and to accelerate the airflow using centrifugal force and discharge it radially or near radially, thereby generating a pressure difference and airflow. In this embodiment of the invention, the centrifugal impeller 12 may include a forward centrifugal impeller 12, which has stronger suction and a longer air delivery distance.

[0062] The volute 13 can orderly guide the rotating airflow generated by the centrifugal impeller 12, reducing turbulence losses. The streamlined design of the volute 13 can reduce energy loss and improve the total pressure efficiency of the fan. Compared with a single-outlet volute 13, in this embodiment of the invention, by adopting a volute 13 with a single centrifugal impeller 12 and dual outlets, the flow path of the airflow in the volute 13 channel can be shortened, reducing flow losses in the volute 13 and increasing the air volume, thereby improving the efficiency of the air purifier 10. Furthermore, under the same air volume requirement, the centrifugal impeller 12 in this embodiment of the invention rotates at a lower speed, resulting in lower overall noise of the air purifier 10. In addition, the dual outlets of the air purifier 10 can make indoor airflow circulate faster and the purification efficiency higher.

[0063] In this design, the axis of the centrifugal impeller 12 is perpendicular to the surface of the front air inlet plate 111. The diameter of the multiple air inlet holes k1 gradually decreases and then gradually increases along a first direction, which is parallel to the axis of the centrifugal impeller 12. The air inlet holes k1 can be hourglass-shaped, which can reduce airflow separation losses in the air inlet section, achieve the effect of deceleration and pressurization, and increase the air intake volume. Furthermore, the airflow is rapidly diffused as it flows through the hourglass-shaped air inlet holes k1, which can improve the uniformity of the airflow entering the equipment housing 11.

[0064] In one exemplary embodiment, the filter assembly can be located between the front air inlet plate 111 and the volute 13. By providing multiple hourglass-shaped air inlet holes k1 on the front air inlet plate 111, the uniformity of the air velocity distribution across the air passage of the filter assembly can be improved, the low-velocity area in the filter assembly can be reduced, the purification efficiency of the filter assembly can be improved, and the service life of the filter assembly can also be extended.

[0065] In summary, this utility model embodiment provides an air purifier 10 comprising a housing 11, a centrifugal impeller 12, and a volute 13. The housing 11 has a front air inlet plate 111 with multiple air inlet holes k1, and two opposite side air outlet plates 112 each with multiple air outlet holes k2. The volute 13 is installed within the housing 11, with its air inlet k3 communicating with the multiple air inlet holes k1, and its two air outlets k4 communicating with the multiple air outlet holes k2 on the two side air outlet plates 112. The centrifugal impeller 12 is installed within the volute 13. By employing a volute 13 with a single centrifugal impeller 12 and dual air outlets, the airflow path within the volute 13 is shortened, reducing airflow loss and increasing air volume, thereby improving the efficiency of the air purifier 10 and reducing overall noise. Furthermore, the dual air outlets of the air purifier 10 allow for faster indoor air circulation and higher purification efficiency.

[0066] Furthermore, the air inlet hole k1 can be hourglass-shaped, which can reduce airflow separation loss in the air inlet section to achieve a deceleration and pressurization effect, thereby increasing the air intake volume. The airflow is rapidly diffused as it flows through the hourglass-shaped air inlet hole k1, which can improve the uniformity of the airflow entering the equipment housing 11.

[0067] In one exemplary implementation, please continue to refer to Table 1. Figure 7 , Figure 8 and Figure 9 Table 1 is a comparison table of the efficiency of an air purifier 10. Figure 7 This is a schematic diagram of gas flow in an air purifier 10 according to an embodiment of the present invention (the black arrows in the diagram represent the direction of gas flow). Figure 8This is a schematic diagram of the simulation results of the hourglass-shaped air inlet vent k1 in this embodiment of the present invention. Figure 9 This is a schematic diagram of the simulation results of a straight cylindrical air inlet hole k1; Table 1 shows the efficiency test results of a single air inlet and single air outlet air purifier 10 in the related technology, and the efficiency test results of the single air inlet and double air outlet air purifier 10 in the embodiment of this utility model. Figure 8 The image shows the velocity cloud of the hourglass-shaped air inlet vent k1 in an embodiment of this utility model. Figure 1 Velocity Contour, Velocity Vector, and Velocity Cloud on the front surface of the front air intake 111 Figure 2 , Figure 9 The image shows a velocity cloud of a straight-cylinder air inlet k1. Figure 1 Speed ​​vector diagram and speed cloud on the front face of the front air intake 111 Figure 2 ,in, Figure 8 and Figure 9 Warm colors (e.g., red and yellow) indicate high-speed airflow areas, while cool colors (e.g., blue and green) indicate low-speed airflow areas or recirculation areas. The unit is meters per second (m·s). -1 ).from Figure 8 and Figure 9 As can be seen, the hourglass-shaped air inlet vent k1 can reduce the airflow separation loss in the air inlet section, achieve the effect of deceleration and pressurization, and increase the air intake volume.

[0068] As can be seen from Table 1, compared with the single-intake, single-outtake air purifier 10 in related technologies, the single-intake, dual-outtake air purifier 10 in this embodiment of the present invention has a larger air volume and higher fan efficiency at the same rotation speed. For example, the air volume can be increased by more than 20% compared to the single-intake, single-outtake type. While maintaining the same air volume, the single-intake, dual-outtake air purifier 10 in this embodiment of the present invention can achieve the target air volume at a lower rotation speed, for example, the rotation speed can be reduced by about 200 revolutions per minute (rpm), which can reduce the overall noise of the air purifier 10.

[0069] Table 1

[0070] type rotational speed air volume Shaft power Air volume / shaft power Single air inlet and single air outlet 1100 244.5 17.6 13.9 Single air inlet, dual air outlet 900 243 11.5 21.1 Single air inlet, dual air outlet 1100 333 24.8 13.4

[0071] Please refer to Figure 3In one optional embodiment, the air inlet hole k1 may include a first hole segment k11 and a second hole segment k12 that are connected, with the first hole segment k11 located on the side of the second hole segment k12 away from the centrifugal impeller 12. Along the direction from the top air outlet plate toward the centrifugal impeller 12, the diameter of the first hole segment k11 gradually decreases, and the diameter of the second hole segment k12 gradually increases; the hole wall of the first hole segment k11 is arc-shaped, and the hole wall of the second hole segment k12 is curved.

[0072] The wall of the first orifice section k11 can be rounded and chamfered. The first orifice section k11 can improve airflow characteristics, allowing the airflow to transition smoothly when entering the air inlet orifice k1, reducing pressure loss and turbulence, thereby improving ventilation efficiency. In addition, it can also reduce eddies and lower noise. The second orifice section k12 can make the gas flowing out of the air inlet orifice k1 diffuse evenly.

[0073] Please refer to Figure 3 In one optional embodiment, the ratio between the radius r1 of the arc surface of the first segment k11 and the minimum diameter D3 of the air inlet hole k1 ranges from 0.12 to 0.13; the angle α between the shortest line connecting the two ends (d1 and d2) of the curved surface of the second segment k12 and the axis of the air inlet hole k1 ranges from 7° to 10°, and the axis of the air inlet hole k1 is parallel to the axis of the centrifugal impeller 12. For example, the ratio between the radius r1 of the arc surface of the first segment k11 and the minimum diameter D3 of the air inlet hole k1 is 0.12, 0.123, 0.125, 0.128, or 0.13; the angle α between the shortest line connecting the two ends (d1 and d2) of the curved surface of the second segment k12 and the axis of the air inlet hole k1 is 7°, 8°, 9°, or 10°. Within this range, the air intake efficiency of the front air intake panel 111 can be relatively high, and the air outlet speed can be relatively uniform.

[0074] Please refer to Figure 5 and Figure 10 , Figure 10 This utility model provides a schematic diagram of the structure of a volute 13 and an isolation support frame 14. In an optional embodiment, the volute 13 may include a receiving part 131, a rectifier grille 132, and two arc-shaped air duct parts 133. The receiving part 131 covers the outside of the centrifugal impeller 12, and an air inlet k3 is provided on the side of the receiving part 131 near the front air inlet plate 111. The rectifier grille 132 is installed at the air inlet k3 of the receiving part 131. The two arc-shaped air duct parts 133 are respectively located on both sides of the receiving part 131. The first end of the arc-shaped air duct part 133 is connected to the receiving part 131, and the second end of the arc-shaped air duct part 133 is provided with an air outlet k4.

[0075] The rectifier grille 132 can be used to rectify the airflow to reduce turbulence and vortices entering the centrifugal impeller 12. For example, the rectifier grille 132 eliminates circumferential vortices by guiding the airflow axially and can also prevent the airflow from periodically impacting the centrifugal impeller 12, reducing noise and vibration; in addition, the rectifier grille 132 can also block foreign objects from entering the rectifier grille 132 with the airflow.

[0076] In one alternative embodiment, the width of the arc-shaped air duct 133 gradually increases from its first end to its second end in a direction perpendicular to the axis of the centrifugal impeller 12. This gradual increase in width along the gas flow direction enhances the air outlet range of the air purifier 10, reduces outlet noise, and facilitates the diffusion of purified air within the environment.

[0077] Please refer to Figure 10 and Figure 11 , Figure 11 yes Figure 10 The schematic diagram of the volute 13 and the isolation support frame 14 from another perspective shows that the arc-shaped air duct section 133 may include a first air duct section 1331 and a second air duct section 1332 connected together. The second air duct section 1332 is located on the side of the first air duct section 1331 away from the receiving part 131. The height of the second air duct section 1332 in the direction parallel to the axis of the centrifugal impeller 12 gradually decreases along a first direction, which is the direction from the first end to the second end. In this way, the air outlet k4 of the first air duct section 1331 can be aligned with the multiple air outlet holes k2 on the side air outlet plate 112.

[0078] Please refer to Figure 6 and Figure 12 , Figure 12 This is a schematic diagram of the structure of an isolation support frame 14 and a filter assembly 15 provided in an embodiment of the present invention. In an optional embodiment, the air purifier 10 may further include an isolation support frame 14 and a filter assembly 15. The isolation support frame 14 is located between the volute 13 and the front air inlet plate 111, and is fixedly connected to the volute 13 and the equipment housing 11 respectively. The isolation support frame 14 has a receiving groove 141 on the side facing the front air inlet plate 111. The bottom of the receiving groove 141 has a vent, which is connected to the air inlet k3. The filter assembly 15 is located in the receiving groove 141.

[0079] Installing the filter assembly 15 in the receiving groove can improve the stability of the filter assembly 15 and increase the distance between the filter assembly 15 and the front air inlet plate 111, thereby making the airflow entering the filter assembly 15 more uniform. For example, the filter assembly 15 may include a high efficiency particulate air filter (HEPA) filter, a HEPA filter with activated carbon composite filter, a formaldehyde removal filter, or an electrostatic dust removal filter, etc.

[0080] Please refer to Figure 10 In one alternative embodiment, the isolation support frame 14 and the volute 13 can be an integral structure. This simplifies the structure and improves the stability of the internal structure of the air purifier 10. The vent of the isolation support frame 14 and the air inlet k3 of the volute 12 can be the same through hole.

[0081] Please refer to Figure 5 and Figure 10 In one exemplary embodiment, the back cover plate 114 and the isolation support frame 14 can form a receiving portion 131 of the volute 13 to reduce the overall weight of the air purifier 10. That is, in the air purifier 10, parallel and adjacent plates can be reused, thereby reducing the overall weight and material usage of the air purifier 10.

[0082] Please refer to Figure 13 , Figure 13 This is a schematic diagram of another air purifier 10 provided in this embodiment of the present invention. In an optional real-time mode, the rear encapsulation plate 114 has multiple mounting slots 1141 on the side opposite to the front air inlet plate 111. The multiple mounting slots 1141 are used to connect with a wall bracket to install the air purifier 10 on the wall. The wall bracket can be fixedly installed on the wall. The multiple mounting slots 1141 may include multiple horizontal slots and multiple vertical slots, so that the air purifier 10 can be installed in different directions according to actual needs.

[0083] For example, after the air purifier 10 is installed on the wall, the air outlet direction of the air purifier 10 can be up and down; or, the air outlet direction of the air purifier 10 can be left and right. Users can flexibly adjust the installation method and installation direction of the air purifier 10 according to the needs of the installation environment. This utility model embodiment does not limit this.

[0084] Please refer to Figure 6 , Figure 14 and Figure 15 , Figure 14 This is a schematic diagram of the structure of a device housing 11 and a wire storage compartment 16 provided in an embodiment of this utility model. Figure 15 yes Figure 14 The diagram shows an exploded view of the device housing 11 and the cable management compartment 16. In an optional real-time configuration, the air purifier 10 may further include the cable management compartment 16. The device housing 11 also has two opposing side panels 113, with each end of the side panels 113 connected to two side air outlet panels 112. The cable management compartment 16 is located within the device housing 11 and mounted on one of the two side panels 113. The guide compartment has an opening on the side opposite to the centrifugal impeller 12. The side panel 113 has a movable plate 1131 that can be positioned at the opening to cover it and facilitate the user's organization of the cables (e.g., power cords) in the cable management compartment 16. When the user needs to store the product or the power cord is too long, the cable management compartment 16 can be used to store the power cord, reducing the risk of the power cord being worn or broken.

[0085] Please refer to Figure 6 In an optional real-time mode, the air purifier 10 may further include a controller (not shown), a drive motor 17, and a control panel 18. The controller may be electrically connected to the drive motor 17 and the control panel 18 respectively. The drive motor 17 may be connected to the centrifugal impeller 12 to drive the centrifugal impeller 12 to rotate. The controller may be installed inside the device housing 11, and the control panel 18 may be installed on the side enclosure plate 113.

[0086] Please refer to Figure 5 In one optional embodiment, the ratio of the shortest distance t1 between the centrifugal impeller 12 and the volute tongue 135 of the volute 13 to the outer diameter D2 of the centrifugal impeller 12 is greater than or equal to 0.075; the ratio of the radius r2 of the volute tongue 135 of the volute 13 to the outer diameter D2 of the centrifugal impeller 12 is greater than or equal to 0.05. Please refer to... Figure 3 and Figure 5 The air inlet k3 of the volute 13 has a collector 134. The ratio of the shortest distance c1 between the rear end face of the collector 134 and the front end face of the centrifugal impeller 12 to the outer diameter D2 of the centrifugal impeller 12 is in the range of 0.02 to 0.03. Within this range, the rotational noise of the air purifier 10 can be reduced.

[0087] Please refer to Figure 5In one exemplary embodiment, the placement angles (a1 and a2) of the two volute tongues 135 of the turbine in this embodiment are symmetrically arranged along the axis of the centrifugal impeller 12 (i.e., a1 = a2), so that the air volume of the two air outlets k4 of the volute casing 13 remains consistent. By adjusting the placement angles a1 and a2 of the two volute tongues 135, the left and right air volume ratio can be controlled. The two side air outlet plates 112 can be arranged opposite each other along a second direction. The placement angle refers to the acute angle between the shortest connection between the top of the volute tongue 135 and the axis of the centrifugal impeller 12 and the second direction.

[0088] 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.

[0089] 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.

[0090] 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, centrifugal impeller, and volute; The equipment housing has a front air inlet plate and two opposite side air outlet plates. The two ends of the front air inlet plate are respectively connected to the two side air outlet plates, and the plate surface of the front air inlet plate intersects with the plate surface of the side air outlet plates. The front air inlet plate has multiple air inlet holes, and the side air outlet plates have multiple air outlet holes. The volute is installed in the equipment housing. The volute has an air inlet and two opposite air outlets. The air inlet is connected to the plurality of air inlet holes, and the two air outlets are respectively connected to the plurality of air outlet holes on the two side air outlet plates. The centrifugal impeller is installed in the volute; The centrifugal impeller's axis is perpendicular to the surface of the front air inlet plate, and the diameter of the plurality of air inlet holes gradually decreases and then gradually increases along a first direction, which is parallel to the axis of the centrifugal impeller.

2. The air purifier according to claim 1, characterized in that, The air inlet hole includes a first hole section and a second hole section that are connected, with the first hole section located on the side of the second hole section away from the centrifugal impeller; Along the direction from the top air outlet plate toward the centrifugal impeller, the diameter of the first hole section gradually decreases, and the diameter of the second hole section gradually increases; The wall of the first hole section is arc-shaped, and the wall of the second hole section is curved.

3. The air purifier according to claim 2, characterized in that, The ratio between the radius of the arc surface and the minimum diameter of the air inlet hole ranges from 0.12 to 0.

13. The angle between the shortest connection between the two ends of the curved surface and the axis of the air inlet hole is in the range of 7° to 10°, and the axis of the air inlet hole is parallel to the axis of the centrifugal impeller.

4. The air purifier according to claim 1, characterized in that, The volute includes a housing, a flow-rectifying grille, and two arc-shaped air ducts; The receiving part is covered on the outside of the centrifugal impeller, and the receiving part has the air inlet on the side near the front air inlet plate; The rectifier grille is installed at the air inlet of the housing; The two arc-shaped air ducts are located on both sides of the receiving part, the first end of the arc-shaped air duct is connected to the receiving part, and the second end of the arc-shaped air duct is provided with the air outlet.

5. The air purifier according to claim 4, characterized in that, In a direction perpendicular to the axis of the centrifugal impeller, the width of the arc-shaped air duct gradually increases from the first end of the arc-shaped air duct to the second end of the arc-shaped air duct.

6. The air purifier according to claim 1, characterized in that, The air purifier also includes an isolation support frame and a filter assembly; The isolation support frame is located between the volute and the front air inlet plate, and is fixedly connected to the volute and the equipment housing respectively. The isolation support frame has a receiving groove on the side facing the front air inlet plate. The bottom of the receiving groove has a vent, and the vent communicates with the air inlet. The filter assembly is located in the receiving groove.

7. The air purifier according to claim 6, characterized in that, The isolation support frame and the volute are an integral structure.

8. The air purifier according to claim 1, characterized in that, The device housing also has a rear encapsulation plate disposed opposite to the front air inlet plate; The encapsulation base plate has multiple mounting slots on the side opposite to the front air inlet plate. These mounting slots are used to connect with a bracket to install the air purifier on the wall.

9. The air purifier according to claim 8, characterized in that, The air purifier also includes a cord storage compartment, and the device housing also has two opposing side encapsulation plates, with the two ends of the side encapsulation plates respectively connected to the two side air outlet plates. The wire storage compartment is located in the device housing and is mounted on one of the two side encapsulation plates.

10. The air purifier according to claim 1, characterized in that, The ratio of the shortest distance between the centrifugal impeller and the volute tongue of the volute to the outer diameter of the centrifugal impeller is greater than or equal to 0.

075. The ratio of the radius of the volute tongue to the outer diameter of the centrifugal impeller is greater than or equal to 0.

05. The volute has a collector at its air inlet. The ratio of the shortest distance between the rear end face of the collector and the front end face of the centrifugal impeller to the outer diameter of the centrifugal impeller is in the range of 0.02 to 0.03.

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