Purifier

Abstract

The purifier comprises a shell, a volute and an impeller, the shell is provided with an air inlet and an air outlet, the volute is arranged in the shell, the impeller is arranged in the volute, a first airflow channel is formed between the outer edge of the impeller and the inner wall of the volute, the impeller can drive external air of the shell to enter the shell from the air inlet, and the impeller can drive external air of the shell to enter the shell from the air outlet. The wall face of the volute comprises a plurality of face sets, the face sets are arranged in the circumferential direction of the impeller, each face set comprises a first surface, a second surface and a third surface, and the first surface, the second surface and the third surface are arranged in the circumferential direction of the impeller. On the radial section of the purifier, the curvature of the first surface is smaller than or equal to that of the third surface, and the curvature of the third surface is smaller than that of the second surface. Through curvature change, accumulation of rotating airflow in the volute can be avoided, the axial airflow speed of the purifier is increased, and the wind speed and the flow guide amount of the whole purifier are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of purifiers, and in particular to a purifier. Background Art

[0002] At present, in the related technology, a square volute and an impeller are provided in the purifier, and the impeller is provided inside the square volute. When the purifier is working, the driving device can drive the impeller to rotate, thereby driving the airflow around the impeller to rotate, reducing the air pressure in the impeller area, so that the air pressure inside the volute is lower than the external air pressure. Under the action of the air pressure difference between the inside and outside of the volute, the airflow flows from the inlet of the volute to the inside through the outside of the volute, and then is discharged from the outlet of the volute. However, since the impeller can drive the airflow to rotate, the rotating airflow will form a vortex in the corner inside the square volute, resulting in a decrease in the flow rate of the gas in the axial direction of the purifier, affecting the exhaust efficiency of the purifier. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, a first aspect of the utility model provides a purifier.

[0005] In view of this, the first aspect of the utility model provides a purifier, including a shell, a volute and an impeller, the shell is provided with an air inlet and an air outlet, the volute is arranged in the shell, the impeller is arranged in the volute, and a first air flow channel is formed between the outer edge of the impeller and the inner wall of the volute, the impeller can drive the external gas of the shell to enter the shell from the air inlet, flow through the impeller and the first air flow channel, and then flow out of the shell from the air outlet, wherein the wall surface of the volute includes a plurality of surface groups, the plurality of surface groups are arranged around the circumference of the impeller, each of the plurality of surface groups includes a first surface, a second surface and a third surface, the first surface, the second surface and the third surface are arranged along the circumference of the impeller, and on the radial cross-section of the purifier, the curvature of the first surface is less than or equal to the curvature of the third surface, and the curvature of the third surface is less than the curvature of the second surface.

[0006] A purifier provided in the present application includes a shell, a volute and an impeller, the shell is provided with an air inlet and an air outlet, the volute is provided in the shell, the impeller is provided in the volute, a first airflow channel is formed between the outer edge of the impeller and the inner wall of the volute, the impeller can drive the external gas of the shell to enter the shell from the air inlet, flow through the impeller and the first airflow channel, and then flow out of the shell from the air outlet, and the gas flow can be made smoother by setting the air inlet and the air outlet. When the purifier is working, the rotation of the impeller can drive the gas flow, and the volute can be provided to facilitate the installation of the impeller, and it can also play a role in guiding, improve the airflow velocity and flow rate of the purifier, and can guide the rotating airflow around the impeller, speed up the axial flow rate of the purifier, and improve the guiding efficiency. Among them, the wall surface of the volute includes a plurality of face groups, and the plurality of face groups are arranged circumferentially around the impeller, which can guide the airflow in the circumference of the impeller to avoid poor airflow. Each of the plurality of surface groups comprises a first surface, a second surface and a third surface, and the first surface, the second surface and the third surface are arranged along the circumference of the impeller. When the purifier is working, the impeller rotates to drive the gas in the purifier to flow rapidly, so that the air pressure in the impeller area in the purifier is reduced, and the external gas is driven to enter the impeller area to achieve rapid driving of the gas. The first surface, the second surface and the third surface guide the airflow. By being arranged on the radial cross section of the purifier, the curvature of the first surface is less than or equal to the curvature of the third surface, and the curvature of the third surface is less than the curvature of the second surface, so that the first surface is relatively flat relative to the third surface, and the third surface is relatively flat relative to the second surface, which can reduce the airflow vortex at the inner corners of the volute and avoid the accumulation of the rotating airflow in the volute. The airflow is guided by the first surface, the second surface and the third surface, the axial airflow speed of the purifier is increased, the airflow flow rate driven by the purifier to flow out is increased, and the wind speed at the inlet of the volute is increased, so that the wind speed and diversion amount of the whole machine can be increased. At the same time, by improving the smoothness of the airflow, turbulent noise can also be reduced.When the purifier is working, the airflow in the purifier will flow to the volute after contacting the positive pressure surface. The volute can guide the airflow. The impeller is assembled inside the volute. On the inner wall surface of the volute, the first surface, the second surface and the third surface are arranged along the circumference of the impeller. The number of first surfaces can be four. On the circumference of the impeller, a second surface is arranged on both sides of each first surface, and a third surface is arranged between two consecutive second surfaces. In the process from the midpoint of the edge of the first surface to the midpoint of the edge of the second surface, the cross-sectional area of ​​the first airflow channel increases, and the flow rate of the airflow in the first airflow channel decreases. In the process of the airflow flowing from the midpoint of the edge of the second surface to the midpoint of the edge of the third surface, the airflow channel is the same or slightly reduced, so that the airflow is accelerated again from the midpoint of the first surface The airflow entering the narrowest position of the first air flow channel from the position area will be decelerated when flowing toward the second surface, while the airflow entering the first air flow channel from the third surface position area will be accelerated when flowing toward the first surface. Since there is a larger cross-sectional area in the first air flow channel, that is, a wider air flow channel area, and there is also a smaller cross-sectional area in the first air flow channel, that is, a narrower air flow channel area, the airflow velocity has an acceleration process and a deceleration process under the guidance of the first air flow channel, thereby guiding the airflow through the first air flow channel, reducing the gathering and rotation of the airflow on the wall, avoiding the airflow circling along the volute, increasing the axial speed of the airflow inside the volute, avoiding airflow blockage inside the volute, and increasing the speed at the volute inlet, thereby increasing the air volume of the purifier and reducing the working noise of the purifier.

[0007] Furthermore, by setting the curvature of the first surface to be less than or equal to the curvature of the third surface, and the curvature of the third surface to be less than the curvature of the second surface, the friction and resistance of the airflow in the volute can be reduced through the design of three continuous curved surfaces, thereby reducing energy loss and improving the working efficiency of the purifier.

[0008] Furthermore, by providing surfaces with different curvatures, the structural strength of the volute can also be improved, so that it can withstand greater airflow pressure and mechanical loads.

[0009] In addition, the purifier in the above technical solution provided by the utility model may also have the following additional technical features:

[0010] In some technical solutions of the utility model, optionally, the impeller includes blades, the number of blades is multiple, each of the multiple blades includes at least two arc segments, and there is a second air flow channel between two adjacent blades of the multiple blades, and the second air flow channel narrows from the middle of the blade to the air outlet end of the blade.

[0011] In this technical solution, the impeller includes blades, the number of blades is multiple, each of the multiple blades includes at least two arc segments, and a second airflow channel is provided between two adjacent blades of the multiple blades, and the second airflow channel narrows from the middle of the blade to the air outlet of the blade, thereby accelerating the flow velocity of the airflow at the air outlet and improving the flow efficiency. At the same time, by providing multiple blades, the driving force of the impeller on the airflow can be further improved, the flow velocity can be increased, and the accumulation of airflow can be avoided.

[0012] In some technical schemes of the utility model, optionally, in the axial direction of the impeller, the two ends of the volute are the air inlet end and the air outlet end respectively. When the purifier is working, the air flow enters the volute from the air inlet end and flows out from the air outlet end. The impeller can drive the gas to enter the volute from the air inlet end of the volute, and after flowing through the second air flow channel and the first air flow channel, it flows out of the volute from the air outlet end of the volute.

[0013] In this technical solution, in the axial direction of the impeller, the two ends of the volute are the air inlet end and the air outlet end respectively. When the purifier is working, the airflow enters from the air inlet end of the volute and then flows out from the air outlet end. The impeller can drive the gas to enter the volute from the air inlet end of the volute, and after flowing through the second airflow channel and the first airflow channel, it flows out of the volute from the air outlet end of the volute, thereby improving the flow efficiency of the airflow, increasing the flow rate, and improving the purification efficiency of the purifier. Reducing the gathering and swirling of the airflow on the wall and avoiding the airflow circling along the volute can increase the axial speed of the airflow inside the volute, avoid airflow blockage inside the volute, increase the speed at the entrance of the volute, thereby increasing the air volume of the purifier and reducing the working noise of the purifier.

[0014] In some technical solutions of the present utility model, optionally, the volute includes a body and a collector, the body has a first surface, a second surface and a third surface, and the collector is annular and located on the air inlet side of the impeller.

[0015] In this technical solution, the volute includes a body and a collector. The body has a first surface, a second surface and a third surface. The collector is annular and located on the air inlet side of the impeller, which can reduce the turbulence and vortex generation of the airflow and make the airflow more stable. The first surface, the second surface and the third surface on the body can also reduce the vortex generated in the corners inside the volute, improve the flow guidance efficiency of the volute to the airflow, avoid the airflow from being difficult to be guided out in the volute, increase the axial wind speed, and also help to efficiently convert the kinetic energy of the airflow into static pressure energy, thereby improving the overall efficiency of the fan.

[0016] Furthermore, by providing a volute including a body and a collector, the structural support of the purifier can be improved and the overall stability of the purifier can be enhanced.

[0017] Furthermore, the collector can also protect the impeller by preventing foreign matter from directly entering the impeller and causing damage.

[0018] In some technical solutions of the present invention, optionally, the length of the body in the first direction is a first length, the inner diameter of the side of the collector away from the impeller is a first inner diameter, and the ratio of the first inner diameter to the first length is greater than or equal to 0.68 and less than or equal to 0.85.

[0019] In this technical solution, the length of the body in the first direction is the first length, the inner diameter of the side of the collector away from the impeller is the first inner diameter, and the ratio of the first inner diameter to the first length is greater than or equal to 0.68 and less than or equal to 0.85. By setting the ratio of the first inner diameter to the first length in the range of 0.68 to 0.85, the smoothness of the airflow when it is guided to the impeller can be improved, and the uniformity and stability of the airflow can be ensured. By controlling the ratio of the inner diameter to the length, the flow path of the airflow can be optimized, the turbulence and vortex generation of the airflow can be reduced, and the working efficiency of the purifier can be improved. By limiting the range of the ratio of the first inner diameter to the first length, the lightweight design of the collector can be achieved while ensuring the structural strength, thereby improving the overall performance of the purifier.

[0020] In some technical solutions of the present invention, optionally, the length of the body in the first direction is a first length; the inner diameter of the side of the collector close to the impeller is a second inner diameter; the ratio of the second inner diameter to the first length is greater than or equal to 0.55 and less than or equal to 0.65.

[0021] In this technical solution, the length of the body in the first direction is the first length; the inner diameter of the side of the collector close to the impeller is the second inner diameter; the ratio of the second inner diameter to the first length is greater than or equal to 0.55 and less than or equal to 0.65. By limiting the range of the ratio of the second inner diameter to the first length, the turbulence and eddy current of the airflow when entering the impeller can be reduced, thereby improving the stability and efficiency of the airflow and improving the working efficiency of the impeller. By optimizing the air inlet, it can be ensured that the impeller can absorb and compress the airflow more effectively.

[0022] In some technical solutions of the present invention, optionally, the height of the collector in the axial direction of the purifier is a first height; the height of the volute in the axial direction of the purifier is a second height; the ratio of the first height to the second height is greater than or equal to 0.11 and less than or equal to 0.22.

[0023] In this technical solution, the height of the collector in the axial direction of the purifier is the first height, and the height of the volute in the axial direction of the purifier is the second height. By setting the ratio of the first height to the second height to be greater than or equal to 0.11 and less than or equal to 0.22, the air flow turbulence and eddy current can be reduced, thereby reducing energy loss and improving the overall efficiency of the fan. The air flow vortex at the inner corners of the volute can also be reduced to avoid the accumulation of rotating airflow in the volute. Optimizing the ratio of the height dimensions of the collector and the volute can improve the compactness of the structure and facilitate installation while ensuring the flow diversion efficiency.

[0024] In some technical solutions of the utility model, optionally, in the axial direction of the purifier, the collector extends in an arc shape from a side away from the impeller to a side close to the impeller, and the radius of the collector is a first radius; the height of the volute in the axial direction of the purifier is a second height; the ratio of the first radius to the second height is greater than or equal to 0.08 and less than or equal to 0.19.

[0025] In this technical solution, in the axial direction of the purifier, the collector extends in an arc shape from the side away from the impeller to the side close to the impeller, and the radius of the collector is the first radius; the height of the volute in the axial direction of the purifier is the second height; the ratio of the first radius to the second height is greater than or equal to 0.08 and less than or equal to 0.19, which helps to smoothly guide the airflow from the collector into the volute and reduce the turbulence and eddy current of the airflow during the entry process. The compactness of the structure of the purifier can be achieved while ensuring the airflow guiding effect. The arc-shaped extension design of the collector helps to reduce the vibration and noise of the purifier during operation and improve the stability of the purifier. A stable operating state can extend the service life of the purifier and reduce maintenance costs.

[0026] In some technical schemes of the utility model, optionally, the volute also includes a transition portion, the transition portion is connected to the collector on a first side in the axial direction of the purifier, the transition portion is connected to the body on a second side in the axial direction of the purifier, and the first side of the transition portion extends to the second side of the transition portion in an arc shape; the radius of the transition portion is the second radius; the height of the volute in the axial direction of the purifier is the second height; the ratio of the second radius to the second height is greater than or equal to 0.11, and less than or equal to 0.18.

[0027] In this technical solution, the volute also includes a transition portion, which is connected to the collector on the first side in the axial direction of the purifier, and is connected to the body on the second side in the axial direction of the purifier, and the first side of the transition portion extends to the second side of the transition portion in an arc shape. The arc-shaped design of the transition portion helps to smoothly guide the airflow from the collector to the volute body, reducing the turbulence and energy loss of the airflow during the transition process. It can also ensure that the airflow is more uniform and stable when entering the volute body, thereby improving the overall efficiency and performance of the fan. The radius of the transition portion is the second radius; the height of the volute in the axial direction of the purifier is the second height; the ratio of the second radius to the second height is greater than or equal to 0.11, and less than or equal to 0.18, which reduces the vibration and noise of the purifier during operation and improves the stability of the purifier.

[0028] Furthermore, by optimizing the ratio range of the second radius to the second height, the transitional flow guidance of the airflow in the volute can be optimized, the structural continuity can be improved, and the stability of the purifier can be improved.

[0029] In some technical solutions of the present invention, optionally, the inner diameter of the first side of the transition portion is the third inner diameter; the length of the body in the first direction is the first length; the ratio of the third inner diameter to the first length is greater than or equal to 0.65 and less than or equal to 0.79.

[0030] In this technical solution, the inner diameter of the first side of the transition portion is the third inner diameter; the length of the main body in the first direction is the first length; the ratio of the third inner diameter to the first length is greater than or equal to 0.65 and less than or equal to 0.79, and the ratio of the third inner diameter on the side where the transition portion is connected to the collector to the first length of the volute body is controlled within this range, which helps to ensure a smooth transition of the airflow from the collector to the volute body, can reduce the turbulence and energy loss of the airflow during the transition process, and improve the stability and efficiency of the airflow.

[0031] Furthermore, by optimizing the transition portion design, the volute can be more convenient to install and maintain.

[0032] In some technical solutions of the present invention, optionally, the inner diameter of the second side of the transition portion is a fourth inner diameter; the length of the body in the first direction is the first length; the ratio of the fourth inner diameter to the first length is greater than or equal to 0.81 and less than or equal to 0.92.

[0033] In this technical solution, the inner diameter of the second side of the transition portion is the fourth inner diameter; the length of the main body in the first direction is the first length; the ratio of the fourth inner diameter to the first length is greater than or equal to 0.81 and less than or equal to 0.92. By setting the ratio of the fourth inner diameter on the side where the transition portion is connected to the volute body to the first length of the volute body to be controlled within the range of 0.81 to 0.92, it helps to ensure that the airflow is evenly distributed inside the volute. The even airflow distribution can improve the efficiency and performance of the purifier and reduce the turbulence and eddy current of the airflow inside the volute.

[0034] At the same time, the optimized transition design can also reduce the energy loss of the airflow inside the volute and improve the efficiency of the purifier. It can convert energy more effectively, reduce energy consumption, and reduce operating costs.

[0035] In some technical solutions of the present invention, optionally, the length of the body in the first direction is a first length; the length of the first surface in the first direction is a second length; and the ratio of the second length to the first length is greater than or equal to 0.48 and less than or equal to 0.62.

[0036] In this technical solution, the length of the main body in the first direction is the first length; the length of the first surface in the first direction is the second length; the ratio of the second length to the first length is greater than or equal to 0.48 and less than or equal to 0.62. By optimizing the length range of the main body and the first surface, the axial airflow velocity of the purifier can be further improved, the airflow flow rate driven out of the purifier can be increased, and the wind speed at the volute inlet can be increased, which can improve the wind speed and conduction volume of the whole machine.

[0037] In some technical solutions of the present utility model, optionally, the first surface is a curved surface, and / or the second surface is a curved surface; and / or the third surface is a curved surface.

[0038] In this technical solution, the first surface is a curved surface, the second surface is a curved surface, and the third surface is a curved surface. Then, by setting the first surface group, the second surface group, and the third surface group of continuous curved surfaces, the continuity of the airflow can be improved, the resistance of the airflow in the purifier can be reduced, and the flow guidance efficiency can be improved. Increasing the axial airflow velocity of the purifier, increasing the airflow flow rate driven by the purifier, and increasing the wind speed at the inlet of the volute can increase the wind speed and the flow guidance of the whole machine.

[0039] In some technical solutions of the present invention, optionally, the first surface is a curved surface, the second surface is a curved surface, and the third surface is a curved surface; and / or the first surface is a plane, the second surface is a curved surface, and the third surface is a plane; and / or the first surface is a plane, the second surface is a curved surface, and the third surface is a curved surface; and / or the first surface is a curved surface, the second surface is a curved surface, and the third surface is a plane.

[0040] In this technical solution, the first surface is a curved surface, the second surface is a curved surface, and the third surface is a curved surface, which reduces the gathering and swirling of airflow on the wall surface, avoids the airflow circling along the volute, increases the axial speed of the airflow inside the volute, avoids airflow blockage inside the volute, increases the speed at the volute inlet, and thus increases the air volume of the purifier. The first surface can also be set as a plane, the second surface as a curved surface, and the third surface as a plane, which can reduce production costs and assembly difficulty. The first surface can also be set as a plane, the second surface as a curved surface, and the third surface as a curved surface, and / or the first surface as a curved surface, the second surface as a curved surface, and the third surface as a plane, which can improve assembly efficiency. The internal planar design is also beneficial to the production of the volute, reducing production costs while achieving rapid driving of the gas. The first surface, the second surface, and the third surface guide the airflow, reduce the airflow vortex at the internal corners of the volute, and avoid the accumulation of rotating airflow in the volute. The airflow is guided by the first surface, the second surface, and the third surface to increase the axial airflow velocity of the purifier, increase the airflow flow rate driven out of the purifier, and increase the wind speed at the inlet of the volute. The wind speed and diversion volume of the whole machine can be increased. At the same time, by improving the smoothness of the airflow, turbulent noise can also be reduced.

[0041] In some technical solutions of the present invention, optionally, each face group includes two second surfaces, and the two sides of one of the two second surfaces are respectively connected to the first side of the first surface and the third surface; the first side of the other second surface of the two second surfaces is connected to the second side of the third surface, and the second side of the other second surface is connected to the first surface of the adjacent face group.

[0042] In this technical solution, each face group includes two second surfaces, and the two sides of one of the two second surfaces are connected to the first side of the first surface and the third surface respectively; the first side of the other second surface of the two second surfaces is connected to the second side of the third surface, and the second side of the other second surface is connected to the first surface of the adjacent face group, so as to improve the continuity of the face group inside the volute, so that when the purifier is working, the impeller rotates, driving the gas in the purifier to flow quickly, so that the air pressure in the impeller area of ​​the purifier is reduced, and the external gas is driven to enter the impeller area. Through the continuous first face group, second face group and third face group, the continuity of the airflow can be improved, the resistance of the airflow in the purifier can be reduced, and the diversion efficiency can be improved. Increasing the axial airflow velocity of the purifier, increasing the airflow flow rate driven by the purifier, and increasing the wind speed at the inlet of the volute can improve the wind speed and diversion of the whole machine.

[0043] In some technical schemes of the utility model, optionally, the purifier also includes an air intake grille, a filter component and an air outlet grille, the filter component is arranged in the air intake grille, the filter component is provided with an air intake channel, the shell is connected to the air intake grille, the volute is arranged in the shell and communicated with the air intake channel, and the air outlet grille is connected to the shell and is located on the side of the volute away from the air intake channel.

[0044] In this technical solution, the purifier further includes an air intake grille, a filter component and an air outlet grille. The filter component is arranged in the air intake grille, the filter component is provided with an air intake passage, the housing is connected to the air intake grille, the volute is arranged in the housing and communicates with the air intake passage, and the air outlet grille is connected to the housing and is located on the side of the volute away from the air intake passage. When the purifier is working, the air to be purified enters the purifier through the air intake grille, is purified by the filter component, then passes through the volute, the impeller and the guide vane, and finally is discharged through the air outlet grille, and the cycle is repeated to achieve the purpose of purifying the air.

[0045] In some technical solutions of the utility model, optionally, the purifier also includes a bracket and a driving component, the bracket is located in the volute, and has an air outlet channel between the bracket and the inner wall of the volute, the mounting end of the driving component is connected to the bracket, and the driving end of the driving component is connected to the impeller, and can drive the impeller to rotate.

[0046] In this technical solution, the driving component can provide the driving force for the impeller to rotate. The impeller rotates, forming a high negative pressure area near the impeller, and then forming a pressure difference between the air intake grille and the impeller, so that air can be sucked in for purification, improving the purification effect of the purifier. By setting up a bracket, the internal stability of the purifier can be improved, making it easier to install.

[0047] In some technical solutions of the utility model, optionally, the purifier further includes a guide vane and a mesh cover, the guide vane is multiple, the multiple guide vanes are located in the air outlet channel and connected to the bracket, and the mesh cover is arranged on the collector of the volute.

[0048] In some technical solutions of the utility model, the purifier may further include a guide vane and a mesh cover, wherein the guide vane is multiple, the multiple guide vanes are located in the air outlet channel, connected to the bracket, and the mesh cover is arranged on the collector of the volute. By arranging multiple guide vanes, the uniformity of the airflow at the air outlet of the purifier can be improved, the flow rate of the airflow can be increased, the flow rate can be increased, and the air outlet efficiency can be improved. When the purifier is working, the guide vanes can be arranged to facilitate the rapid discharge of the purified gas in the purifier, thereby increasing the guide volume.

[0049] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0051] Figure 1 One of the structural schematic diagrams of a purifier according to an embodiment of the utility model is shown;

[0052] Figure 2 A second structural schematic diagram of a purifier according to an embodiment of the utility model is shown;

[0053] Figure 3 for Figure 2 AA cross-sectional structural schematic diagram of the purifier of the illustrated embodiment;

[0054] Figure 4 A third structural schematic diagram of a purifier according to an embodiment of the utility model is shown;

[0055] Figure 5 A fourth structural schematic diagram of a purifier according to an embodiment of the utility model is shown;

[0056] Figure 6 for Figure 5 A schematic diagram of the BB cross-sectional structure of the purifier of the illustrated embodiment;

[0057] Figure 7 One of the simulation diagrams of a purifier according to an embodiment of the utility model is shown;

[0058] Figure 8 A second simulation diagram of a purifier according to an embodiment of the utility model is shown;

[0059] Fig. 9 One of the velocity vector diagrams of a volute according to a comparative example of the present utility model is shown;

[0060] Fig.10 One of the velocity cloud diagrams of a volute according to a comparative example of the utility model is shown;

[0061] Fig.11 A velocity cloud diagram of a circular volute according to a comparative example of the utility model is shown;

[0062] Fig.12 One of the velocity cloud diagrams of a square volute according to a comparative example of the utility model is shown;

[0063] Fig.13 The second velocity cloud diagram of a square volute according to a comparative example of the utility model is shown;

[0064] Fig.14 A velocity cloud diagram of a volute according to an embodiment of the utility model is shown.

[0065] in, Figures 1 to 14 The corresponding relationship between the reference numerals and component names in the figure is:

[0066] 110 volute, 120 face group, 122 first surface, 124 second surface, 126 third surface, 130 body, 132 collector, 134 transition portion, 140 impeller, 142 blades, 144 arc segment, 200 purifier, 210 air intake grille, 220 filter component, 230 air intake channel, 240 shell, 242 air inlet, 244 air outlet, 250 air outlet grille, 260 bracket, 270 air outlet channel, 280 drive component, 282 mounting end, 284 drive end, 290 guide vane, 292 mesh cover, 294 first air flow channel, 296 second air flow channel. DETAILED DESCRIPTION

[0067] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0068] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0069] Refer to the following Figures 1 to 14 A purifier according to some embodiments of the present invention is described.

[0070] In the embodiment of the present utility model, Figure 1 , Figure 3 and Figure 4 As shown, a purifier 200 is provided, including a housing 240, a volute 110 and an impeller 140, the housing 240 is provided with an air inlet 242 and an air outlet 244, the volute 110 is arranged in the housing 240, the impeller 140 is arranged in the volute 110, and a first air flow channel 294 is formed between the outer edge of the impeller 140 and the inner wall of the volute 110, and the impeller 140 can drive the external air of the housing 240 to enter the housing 240 from the air inlet 242, flow through the impeller 140 and the first air flow channel 294, and then flow out of the housing 240 from the air outlet 244. 40, wherein the wall surface of the volute 110 includes a plurality of surface groups 120, the plurality of surface groups 120 are arranged around the circumference of the impeller 140, each of the plurality of surface groups 120 includes a first surface 122, a second surface 124 and a third surface 126, the first surface 122, the second surface 124 and the third surface 126 are arranged along the circumference of the impeller 140, and on the radial cross section of the purifier 200, the curvature of the first surface 122 is less than or equal to the curvature of the third surface 126, and the curvature of the third surface 126 is less than the curvature of the second surface 124.

[0071] A purifier 200 provided in the present application includes a shell 240, a volute 110 and an impeller 140. The shell 240 is provided with an air inlet 242 and an air outlet 244. The volute 110 is arranged in the shell 240, and the impeller 140 is arranged in the volute 110. A first air flow channel 294 is formed between the outer edge of the impeller 140 and the inner wall of the volute 110. The impeller 140 can drive the external air of the shell 240 to enter the shell 240 through the air inlet 242, and after flowing through the impeller 140 and the first air flow channel 294, it flows out of the shell 240 through the air outlet 244. By setting the air inlet 242 and the air outlet 244, the gas flow can be smoother. When the purifier 200 is working, the rotation of the impeller 140 can drive the gas flow. By setting the volute 110, it is convenient to install the impeller 140, and it can also play a role in guiding the flow, thereby increasing the airflow velocity and flow rate of the purifier 200. The airflow rotating around the impeller 140 can be guided, and the axial flow velocity of the purifier 200 can be accelerated to improve the guiding efficiency. Among them, the wall surface of the volute 110 includes a plurality of face groups 120, and the plurality of face groups 120 are arranged around the circumference of the impeller 140, which can guide the airflow in the circumference of the impeller 140 to avoid poor airflow. Each of the plurality of face groups 120 includes a first surface 122, a second surface 124, and a third surface 126. The first surface 122, the second surface 124, and the third surface 126 are arranged along the circumference of the impeller 140. When the purifier 200 is working, the impeller 140 rotates to drive the gas in the purifier 200 to flow rapidly, so that the air pressure in the impeller 140 region in the purifier 200 is reduced, and the external gas is driven to enter the impeller 140 region to achieve rapid driving of the gas. The first surface 122, the second surface 124, and the third surface 126 guide the airflow. By being arranged on the radial cross section of the purifier 200, the first surface 122, the second surface 124, and the third surface 126 are arranged along the circumference of the impeller 140. When the purifier 200 is working, the impeller 140 rotates to drive the gas in the purifier 200 to flow rapidly, so that the air pressure in the impeller 140 region in the purifier 200 is reduced, and the external gas is driven to enter the impeller 140 region to achieve rapid driving of the gas. 2 has a curvature less than or equal to that of the third surface 126, and the curvature of the third surface 126 is less than that of the second surface 124, so that the first surface 122 is relatively flat relative to the third surface 126, and the third surface 126 is relatively flat relative to the second surface 124, which can reduce the airflow vortex at the inner corners of the volute 110 and avoid the accumulation of the rotating airflow in the volute 110. The airflow is guided by the first surface 122, the second surface 124 and the third surface 126, thereby improving the axial airflow speed of the purifier 200, increasing the airflow flow rate driven by the purifier 200, and increasing the wind speed at the inlet of the volute 110, which can improve the wind speed and diversion volume of the whole machine.When the purifier 200 is working, the airflow in the purifier 200 will flow to the volute 110 after contacting the positive pressure surface. The volute 110 can guide the airflow. The impeller 140 is assembled inside the volute 110. On the inner wall surface of the volute 110, the first surface 122, the second surface 124 and the third surface 126 are arranged along the circumference of the impeller 140. The number of the first surfaces 122 can be four. On the circumference of the impeller 140, a second surface 124 is arranged on both sides of each first surface 122, and a third surface 126 is arranged between two consecutive second surfaces 124. In the process from the midpoint of the edge of the first surface 122 to the midpoint of the edge of the second surface 124, the cross-sectional area of ​​the first airflow channel 294 increases, and the flow rate of the airflow in the first airflow channel 294 decreases. In the process of the airflow flowing from the midpoint of the edge of the second surface 124 to the midpoint of the edge of the third surface 126, the airflow channel is the same or slightly reduced, so that the airflow again Acceleration, the airflow entering the narrowest position of the first airflow channel 294 from the midpoint position area of ​​the first surface 122 and flowing toward the second surface 124 will be decelerated, while the airflow entering the first airflow channel 294 from the position area of ​​the third surface 126 and flowing toward the first surface 122 will be accelerated. Since there is a larger cross-sectional area in the first airflow channel 294, that is, a wider airflow channel area, and there is also a smaller cross-sectional area in the first airflow channel 294, that is, a narrower airflow channel area, the airflow velocity has an acceleration process and a deceleration process under the guidance of the first airflow channel 294, so that the airflow is guided through the first airflow channel 294, the gathering and rotation of the airflow on the wall is reduced, and the airflow is prevented from circling along the volute 110, the axial speed of the airflow inside the volute 110 can be increased, the airflow blockage inside the volute 110 is avoided, and the speed at the entrance of the volute 110 is increased, thereby increasing the air volume of the purifier 200 and reducing the working noise of the purifier 200.

[0072] Furthermore, by setting the curvature of the first surface 122 to be less than or equal to the curvature of the third surface 126, and the curvature of the third surface 126 to be less than the curvature of the second surface 124, the friction and resistance of the airflow in the volute 110 can be reduced through the design of three continuous curved surfaces, thereby reducing energy loss and improving the working efficiency of the purifier 200.

[0073] Among them, Figure 5 As shown, the first direction is direction K.

[0074] Furthermore, by providing surfaces with different curvatures, the structural strength of the volute 110 can also be improved, so that it can withstand greater airflow pressure and mechanical loads.

[0075] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0076] like Figure 2 , Figure 3 and Figure 4 As shown, the impeller 140 includes a plurality of blades 142, each blade 142 includes at least two arc segments 144, and a second air flow channel 296 is provided between two adjacent blades 142, and the second air flow channel 296 is narrowed from the middle of the blade 142 to the air outlet end of the blade 142.

[0077] In this embodiment, the impeller 140 includes a plurality of blades 142, each of the plurality of blades 142 includes at least two arc segments 144, and a second airflow channel 296 is provided between two adjacent blades 142 of the plurality of blades 142, and the second airflow channel 296 is narrowed from the middle of the blade 142 to the air outlet of the blade 142, thereby accelerating the flow velocity of the airflow at the air outlet and improving the flow efficiency. At the same time, by providing a plurality of blades 142, the driving force of the impeller 140 on the airflow can be further improved, and the flow velocity can be increased.

[0078] In the axial direction of the impeller 140, the two ends of the volute 110 are respectively an air inlet end and an air outlet end. When the purifier 200 is working, the air flow enters the volute 110 from the air inlet end and then flows out from the air outlet end. The impeller 140 can drive the gas to enter the volute 110 from the air inlet end of the volute 110, flow through the second air flow channel 296 and the first air flow channel 294, and then flow out of the volute 110 from the air outlet end of the volute 110.

[0079] In this embodiment, in the axial direction of the impeller 140, the two ends of the volute 110 are the air inlet end and the air outlet end, respectively. When the purifier 200 is working, the airflow enters from the air inlet end of the volute 110 and then flows out from the air outlet end. The impeller 140 can drive the gas to enter the volute 110 from the air inlet end of the volute 110, flow through the second airflow channel 296 and the first airflow channel 294, and then flow out of the volute 110 from the air outlet end of the volute 110, thereby improving the flow efficiency of the airflow, increasing the flow rate, and improving the purification efficiency of the purifier 200. Reducing the gathering and swirl of the airflow on the wall surface, avoiding the airflow to circle along the volute 110, increasing the axial speed of the airflow inside the volute 110, avoiding the blockage of the airflow inside the volute 110, and increasing the speed at the entrance of the volute 110, thereby increasing the air volume of the purifier 200 and reducing the working noise of the purifier 200.

[0080] Specifically, Figure 3 As shown, the air inlet end of the volute 110 is the end indicated by P1, and the air outlet end of the volute 110 is the end indicated by P2.

[0081] The volute 110 includes a body 130 and a collector 132 . The body 130 has a first surface 122 , a second surface 124 and a third surface 126 . The collector 132 is annular and is located at the air inlet side of the impeller 140 .

[0082] In this embodiment, the volute 110 includes a body 130 and a collector 132. The body 130 has a first surface 122, a second surface 124, and a third surface 126. The collector 132 is annular and is located on the air inlet side of the impeller 140, which can reduce the turbulence and vortex generation of the airflow and make the airflow more stable. The first surface 122, the second surface 124, and the third surface 126 on the body 130 can also reduce the vortex generated in the internal corners of the volute 110, improve the airflow guidance efficiency of the volute 110, avoid the airflow from being difficult to be guided out in the volute 110, increase the axial wind speed, and also help to efficiently convert the kinetic energy of the airflow into static pressure energy, thereby improving the overall efficiency of the fan.

[0083] Furthermore, by providing the volute 110 with a body 130 and a collector 132 , the structural support of the purifier 200 can be improved, thereby enhancing the overall stability of the purifier 200 .

[0084] Furthermore, the collector 132 can also protect the impeller 140 by preventing foreign matter from directly entering the impeller 140 and causing damage.

[0085] Specifically, the axial direction of the purifier 200 is direction V.

[0086] Specifically, the circumferential direction of the impeller 140 is direction X.

[0087] Specifically, the radial direction of the volute 110 is direction G.

[0088] Specifically, the radial direction of the purifier 200 is also the direction indicated by the arrow G.

[0089] Specifically, the axial direction of the impeller 140 is consistent with the axial direction of the purifier, which is also the direction indicated by the arrow V.

[0090] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0091] The length of the body 130 in the first direction is a first length, the inner diameter of the side of the collector 132 away from the impeller 140 is a first inner diameter, and the ratio of the first inner diameter to the first length is greater than or equal to 0.68 and less than or equal to 0.85.

[0092] In this embodiment, the length of the body 130 in the first direction is the first length, the inner diameter of the side of the collector 132 away from the impeller 140 is the first inner diameter, and the ratio of the first inner diameter to the first length is greater than or equal to 0.68 and less than or equal to 0.85. By setting the ratio of the first inner diameter to the first length in the range of 0.68 to 0.85, the smoothness of the airflow when it is directed to the impeller 140 can be improved, and the uniformity and stability of the airflow can be ensured. By controlling the ratio of the inner diameter to the length, the flow path of the airflow can be optimized, the turbulence and vortex generation of the airflow can be reduced, and the working efficiency of the purifier 200 can be improved. By limiting the range of the ratio of the first inner diameter to the first length, the lightweight design of the collector 132 can be achieved while ensuring the structural strength, and the overall performance of the purifier 200 can be improved.

[0093] Specifically, Figure 5 and Figure 6 As shown, the first length is L1 and the first inner diameter is D1.

[0094] Specifically, the ratio of the first inner diameter to the first length is D1 / L1. The ratio D1 / L1 of the first inner diameter to the first length may be 0.68, 0.70, 0.75, or 0.85.

[0095] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0096] The length of the body 130 in the first direction is the first length; the inner diameter of the side of the collector 132 close to the impeller 140 is the second inner diameter; the ratio of the second inner diameter to the first length is greater than or equal to 0.55 and less than or equal to 0.65.

[0097] In this embodiment, the length of the body 130 in the first direction is the first length; the inner diameter of the side of the collector 132 close to the impeller 140 is the second inner diameter; the ratio of the second inner diameter to the first length is greater than or equal to 0.55 and less than or equal to 0.65. By limiting the range of the ratio of the second inner diameter to the first length, the turbulence and vortex of the airflow when entering the impeller 140 can be reduced, thereby improving the stability and efficiency of the airflow and improving the working efficiency of the impeller 140. By optimizing the air inlet, it can be ensured that the impeller 140 can absorb and compress the airflow more effectively.

[0098] Specifically, Figure 6 As shown, the second inner diameter is D2.

[0099] Specifically, the ratio of the second inner diameter to the first length is D2 / L1. The ratio D2 / L1 of the second inner diameter to the first length may be 0.55, the ratio D2 / L1 of the second inner diameter to the first length may be 0.58, the ratio D2 / L1 of the second inner diameter to the first length may be 0.60, and the ratio D2 / L1 of the second inner diameter to the first length may be 0.65.

[0100] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0101] The height of the collector 132 in the axial direction of the purifier 200 is a first height; the height of the volute 110 in the axial direction of the purifier 200 is a second height; the ratio of the first height to the second height is greater than or equal to 0.11 and less than or equal to 0.22.

[0102] In this embodiment, the height of the collector 132 in the axial direction of the purifier 200 is a first height, and the height of the volute 110 in the axial direction of the purifier 200 is a second height. By setting the ratio of the first height to the second height to be greater than or equal to 0.11 and less than or equal to 0.22, the air flow turbulence and eddy current can be reduced, thereby reducing energy loss and improving the overall efficiency of the fan. The air flow vortex at the inner corners of the volute 110 can also be reduced to avoid the accumulation of rotating airflow in the volute 110. Optimizing the ratio of the height dimensions of the collector 132 and the volute 110 can improve the compactness of the structure and facilitate installation while ensuring the flow diversion efficiency.

[0103] Specifically, the first height is H1, and the second height is H2.

[0104] Specifically, the ratio of the first height to the second height is H1 / H2, the ratio of the first height to the second height H1 / H2 may be 0.11, the ratio of the first height to the second height H1 / H2 may be 0.14, the ratio of the first height to the second height H1 / H2 may be 0.20, and the ratio of the first height to the second height H1 / H2 may be 0.22.

[0105] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0106] In the axial direction of the purifier 200, the collector 132 extends in an arc shape from a side away from the impeller 140 to a side close to the impeller 140, and the radius of the collector 132 is a first radius; the height of the volute 110 in the axial direction of the purifier 200 is a second height; the ratio of the first radius to the second height is greater than or equal to 0.08 and less than or equal to 0.19.

[0107] In this embodiment, in the axial direction of the purifier 200, the collector 132 extends in an arc shape from the side away from the impeller 140 to the side close to the impeller 140, and the radius of the collector 132 is the first radius; the height of the volute 110 in the axial direction of the purifier 200 is the second height; the ratio of the first radius to the second height is greater than or equal to 0.08 and less than or equal to 0.19, which helps to smoothly guide the airflow from the collector 132 into the volute 110 and reduce the turbulence and eddy current of the airflow during the entry process. The compactness of the structure of the purifier 200 can be achieved while ensuring the airflow guiding effect. The design of the arc-shaped extension of the collector 132 helps to reduce the vibration and noise of the purifier 200 during operation and improve the stability of the purifier 200. The stable operating state can extend the service life of the purifier 200 and reduce maintenance costs.

[0108] Specifically, the first radius is R1.

[0109] Specifically, the ratio of the first radius to the second height is R1 / H2, the ratio of the first radius to the second height R1 / H2 can be 0.08, the ratio of the first radius to the second height R1 / H2 can be 0.10, the ratio of the first radius to the second height R1 / H2 can be 0.15, and the ratio of the first radius to the second height R1 / H2 can be 0.19.

[0110] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0111] The volute 110 also includes a transition portion 134, which is connected to the collector 132 on a first side in the axial direction of the purifier 200, and is connected to the body 130 on a second side in the axial direction of the purifier 200, and extends in an arc shape from the first side of the transition portion 134 to the second side of the transition portion 134; the radius of the transition portion 134 is a second radius; the height of the volute 110 in the axial direction of the purifier 200 is a second height; the ratio of the second radius to the second height is greater than or equal to 0.11 and less than or equal to 0.18.

[0112] In this embodiment, the volute 110 also includes a transition portion 134, which is connected to the collector 132 on the first side of the purifier 200 in the axial direction, and the transition portion 134 is connected to the body 130 on the second side of the purifier 200 in the axial direction, and the first side of the transition portion 134 extends to the second side of the transition portion 134 in an arc shape. The arc design of the transition portion 134 helps to smoothly guide the airflow from the collector 132 to the volute 110 body 130, reducing the turbulence and energy loss of the airflow during the transition process. It can also ensure that the airflow is more uniform and stable when entering the volute 110 body 130, thereby improving the overall efficiency and performance of the purifier 200. The radius of the transition portion 134 is the second radius; the height of the volute 110 in the axial direction of the purifier 200 is the second height; the ratio of the second radius to the second height is greater than or equal to 0.11 and less than or equal to 0.18, reducing the vibration and noise of the purifier 200 during operation and improving the stability of the purifier 200.

[0113] Specifically, the second radius is R2.

[0114] Specifically, the ratio of the second radius to the second height R2 / H2 may be 0.11, the ratio of the second radius to the second height R2 / H2 may be 0.13, the ratio of the second radius to the second height R2 / H2 may be 0.15, and the ratio of the second radius to the second height R2 / H2 may be 0.18.

[0115] Furthermore, by optimizing the ratio range of the second radius to the second height, the transitional flow guidance of the airflow in the volute 110 can be optimized, the structural continuity can be improved, and the stability of the purifier 200 can be improved.

[0116] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0117] The inner diameter of the first side of the transition portion 134 is the third inner diameter; the length of the body 130 in the first direction is the first length; and the ratio of the third inner diameter to the first length is greater than or equal to 0.65 and less than or equal to 0.79.

[0118] In this embodiment, the inner diameter of the first side of the transition portion 134 is the third inner diameter; the length of the main body 130 in the first direction is the first length; the ratio of the third inner diameter to the first length is greater than or equal to 0.65 and less than or equal to 0.79, and the ratio of the third inner diameter on the side where the transition portion 134 is connected to the collector 132 to the first length of the volute 110 main body 130 is controlled within this range, which helps to ensure a smooth transition of the airflow from the collector 132 to the volute 110 main body 130, can reduce the turbulence and energy loss of the airflow during the transition process, and improve the stability and efficiency of the airflow.

[0119] Specifically, the third inner diameter is D3.

[0120] Specifically, the ratio D3 / L1 of the third inner diameter to the first length may be 0.65, the ratio D3 / L1 of the third inner diameter to the first length may be 0.68, the ratio D3 / L1 of the third inner diameter to the first length may be 0.75, and the ratio D3 / L1 of the third inner diameter to the first length may be 0.79.

[0121] Furthermore, by optimizing the design of the transition portion 134 , the volute 110 can be more convenient to install and maintain.

[0122] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0123] The inner diameter of the second side of the transition portion 134 is a fourth inner diameter; the length of the body 130 in the first direction is a first length; and the ratio of the fourth inner diameter to the first length is greater than or equal to 0.81 and less than or equal to 0.92.

[0124] In this embodiment, the inner diameter of the second side of the transition portion 134 is the fourth inner diameter; the length of the main body 130 in the first direction is the first length; the ratio of the fourth inner diameter to the first length is greater than or equal to 0.81 and less than or equal to 0.92. By setting the ratio of the fourth inner diameter on the side where the transition portion 134 is connected to the volute 110 main body 130 to the first length of the volute 110 main body 130 to be controlled within the range of 0.81 to 0.92, it helps to ensure that the airflow is evenly distributed inside the volute 110. The even airflow distribution can improve the efficiency and performance of the purifier 200 and reduce the turbulence and eddy current of the airflow inside the volute 110.

[0125] At the same time, the optimized transition portion 134 design can also reduce the energy loss of the airflow inside the volute 110, and improve the efficiency of the purifier 200. It can more effectively convert energy, reduce energy consumption, and reduce operating costs.

[0126] Specifically, Figure 6 As shown, the fourth inner diameter is D4.

[0127] Specifically, the ratio D4 / L1 of the fourth inner diameter to the first length may be 0.81, the ratio D4 / L1 of the fourth inner diameter to the first length may be 0.83, the ratio D4 / L1 of the fourth inner diameter to the first length may be 0.89, and the ratio D4 / L1 of the fourth inner diameter to the first length may be 0.92.

[0128] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0129] The length of the body 130 in the first direction is a first length; the length of the first surface 122 in the first direction is a second length; and the ratio of the second length to the first length is greater than or equal to 0.48 and less than or equal to 0.62.

[0130] In this embodiment, the length of the main body 130 in the first direction is the first length; the length of the first surface 122 in the first direction is the second length; the ratio of the second length to the first length is greater than or equal to 0.48 and less than or equal to 0.62. By optimizing the length range of the main body 130 and the first surface 122, the axial airflow velocity of the purifier 200 can be further improved, the airflow flow rate driven by the purifier 200 is increased, and the wind speed at the inlet of the volute 110 is increased, which can improve the wind speed and diversion volume of the whole machine.

[0131] Specifically, the ratio L2 / L1 of the second length to the first length may be 0.48, the ratio L2 / L1 of the second length to the first length may be 0.52, the ratio L2 / L1 of the second length to the first length may be 0.54, and the ratio L2 / L1 of the second length to the first length may be 0.62.

[0132] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0133] The first surface 122 is a curved surface, and / or the second surface 124 is a curved surface; and / or the third surface 126 is a curved surface.

[0134] In this embodiment, the first surface 122 is a curved surface, the second surface 124 is a curved surface, and the third surface 126 is a curved surface. By setting the first surface group 120, the second surface group 120 and the third surface group 120 of continuous curved surfaces, the continuity of the airflow can be improved, the resistance of the airflow in the purifier 200 can be reduced, and the flow diversion efficiency can be improved. The axial airflow velocity of the purifier 200 is increased, the airflow flow rate driven out of the purifier 200 is increased, and the wind speed at the inlet of the volute 110 is increased, so that the wind speed and diversion of the whole machine can be improved.

[0135] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0136] The first surface 122 is a curved surface, the second surface 124 is a curved surface, and the third surface 126 is a curved surface; and / or the first surface 122 is a plane, the second surface 124 is a curved surface, and the third surface 126 is a plane; and / or the first surface 122 is a plane, the second surface 124 is a curved surface, and the third surface 126 is a curved surface; and / or the first surface 122 is a curved surface, the second surface 124 is a curved surface, and the third surface 126 is a plane.

[0137] In this embodiment, the first surface 122 is a curved surface, the second surface 124 is a curved surface, and the third surface 126 is a curved surface, which reduces the gathering and swirling of the airflow on the wall surface, prevents the airflow from circling along the volute 110, increases the axial speed of the airflow inside the volute 110, prevents the airflow inside the volute 110 from being blocked, increases the speed at the entrance of the volute 110, and thus increases the air volume of the purifier 200. The first surface 122 can also be set as a plane, the second surface 124 as a curved surface, and the third surface 126 as a plane, which can reduce production costs and assembly difficulty. The first surface 122 can also be set as a plane, the second surface 124 can be set as a curved surface, and the third surface 126 can be set as a curved surface, and / or the first surface 122 can be set as a curved surface, the second surface 124 can be set as a curved surface, and the third surface 126 can be set as a plane, which can improve the assembly efficiency. The internal planar design is also conducive to the production of the volute 110, reducing the production cost while realizing the rapid driving of the gas. The first surface 122, the second surface 124 and the third surface 126 guide the airflow, reduce the airflow vortex at the internal corners of the volute 110, and avoid the accumulation of rotating airflow in the volute 110. The airflow is guided by the first surface 122, the second surface 124 and the third surface 126, and the axial airflow speed of the purifier 200 is increased, the airflow flow rate driven by the purifier 200 to flow out is increased, and the wind speed at the inlet of the volute 110 is increased, which can improve the wind speed and diversion of the whole machine. At the same time, by improving the smoothness of the airflow, turbulent noise can also be reduced.

[0138] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0139] Each face group 120 includes two second surfaces 124, and the two sides of one of the two second surfaces 124 are respectively connected to the first side of the first surface 122 and the third surface 126; the first side of the other second surface 124 of the two second surfaces 124 is connected to the second side of the third surface 126, and the second side of the other second surface 124 is connected to the first surface 122 of the adjacent face group 120.

[0140] In this embodiment, each face group 120 includes two second surfaces 124, and the two sides of one of the two second surfaces 124 are respectively connected to the first side of the first surface 122 and the first side of the third surface 126; the first side of the other second surface 124 of the two second surfaces 124 is connected to the second side of the third surface 126, and the second side of the other second surface 124 is connected to the first surface 122 of the adjacent face group 120, thereby improving the continuity of the face group 120 inside the volute 110, so that when the purifier 200 is working, the impeller 140 rotates to drive the gas in the purifier 200 to flow quickly, so that the air pressure in the impeller 140 area of ​​the purifier 200 is reduced, and the external gas is driven to enter the impeller 140 area. Through the continuous first face group 120, the second face group 120 and the third face group 120, the continuity of the airflow can be improved, the resistance of the airflow in the purifier 200 can be reduced, and the flow guidance efficiency can be improved. By increasing the axial air flow velocity of the purifier 200, increasing the air flow rate driven out of the purifier 200, and increasing the wind speed at the inlet of the volute 110, the wind speed and the flow rate of the whole machine can be improved.

[0141] Specifically, the first length L1 can be set to 228 mm, the second height can be set to 150 mm, and by setting the ratio of the first inner diameter to the first length to 0.75, the ratio of the second inner diameter to the first length to 0.60, the ratio of the first height to the second height to 0.146, the ratio of the first radius to the second height to 0.131, the ratio of the second radius to the second height to 0.133, the ratio of the third inner diameter to the first length to 0.76, the ratio of the fourth inner diameter to the first length to 0.88, and the second length to the first length to 0.52, the inlet wind speed of the volute 110 can be increased, the air volume of the purifier 200 can be increased, the air volume can be increased by more than 15%, and the noise can be reduced by 1.5dB.

[0142] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0143] The purifier 200 also includes an air intake grille 210, a filter component 220 and an air outlet grille 250. The filter component 220 is arranged in the air intake grille 210. The filter component 220 is provided with an air intake channel 230. The shell 240 is connected to the air intake grille 210. The volute 110 is arranged in the shell 240 and is connected to the air intake channel 230. The air outlet grille 250 is connected to the shell 240 and is located on the side of the volute 110 away from the air intake channel 230.

[0144] In this embodiment, the purifier 200 further includes an air inlet grille 210, a filter component 220 and an air outlet grille 250. The filter component 220 is disposed in the air inlet grille 210, the filter component 220 is provided with an air inlet passage 230, the housing 240 is connected to the air inlet grille 210, the volute 110 is disposed in the housing 240 and communicates with the air inlet passage 230, and the air outlet grille 250 is connected to the housing 240 and is located on a side of the volute 110 away from the air inlet passage 230. When the purifier 200 is working, the air to be purified enters the purifier 200 through the air inlet grille 210, purifies the air through the filter component 220, and then passes through the volute 110, the impeller 140 and the guide vane 290, and finally discharges the purified air through the air outlet grille 250, and the cycle is repeated to achieve the purpose of purifying the air.

[0145] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0146] The purifier 200 also includes a bracket 260 and a driving component 280. The bracket 260 is located in the volute 110 and has an air outlet passage 270 between the bracket 260 and the inner wall of the volute 110. The mounting end 282 of the driving component 280 is connected to the bracket 260, and the driving end 284 of the driving component 280 is connected to the impeller 140, so as to drive the impeller 140 to rotate.

[0147] In this embodiment, the driving component 280 can provide a driving force for the impeller 140 to rotate. The impeller 140 rotates to form a high negative pressure area near the impeller 140, thereby forming a pressure difference between the air intake grille 210 and the impeller 140, so that air can be sucked in for purification, thereby improving the purification effect of the purifier 200. By providing the bracket 260, the internal stability of the purifier 200 can be improved, which is convenient for installation.

[0148] This embodiment provides a purifier 200. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0149] The purifier 200 further includes a guide vane 290 and a mesh cover 292 . There are multiple guide vanes 290 . The multiple guide vanes 290 are located in the air outlet channel 270 and connected to the bracket 260 . The mesh cover 292 is disposed on the collector 132 of the volute 110 .

[0150] In this embodiment, the purifier 200 further includes a guide vane 290 and a mesh cover 292. There are multiple guide vanes 290, and the multiple guide vanes 290 are located in the gas outlet channel 270 and connected to the bracket 260. The mesh cover 292 is arranged on the collector 132 of the volute 110. By providing multiple guide vanes 290, the uniformity of the airflow at the gas outlet of the purifier 200 can be improved, the flow rate of the airflow can be increased, the flow rate can be increased, and the gas outlet efficiency can be improved. When the purifier 200 is working, the guide vanes 290 can be provided to facilitate the rapid discharge of the purified gas in the purifier 200, thereby increasing the guide volume.

[0151] Specifically, Figure 7 and Figure 8 As shown, Figure 7 The velocity vector diagram of the wind speed generated by the simulation of the purifier 200 of an embodiment of the utility model is shown. The simulation content is the gas velocity in the coordinate system (Velocity in Stnframe), and the speed unit is meters per second (m / s). By optimizing the parameters of the volute 110, setting the volute 110 to an irregular square, and increasing the axial velocity of the airflow, the airflow velocity at P1 (i.e., the entrance of the volute 110) is significantly increased, and the flow velocity at P2 (i.e., inside the volute 110) is also significantly increased, which can increase the air volume by more than 15% and reduce the noise by 1.5dB.

[0152] Specifically, Fig. 9 As shown, in a comparative example of the present invention, Figure 8 The velocity vector diagram of a circular volute with the same shape as the impeller is shown. The flow velocity at the inlet and inside the volute is low, and the airflow will swirl along the inner wall of the volute. Fig. 9 , a velocity vector 1 (Velocity Vector1) is shown in FIG. 1 , and the velocity unit is meter per second (m / s), wherein the range of the velocity vector 1 (Velocity Vector1) shown is between 0 and 18 meters per second (m / s).

[0153] Specifically, Fig.10 As shown, in a comparative example of the present invention, a velocity contour diagram of a circular volute with the same shape as the impeller is shown, the velocity unit is meter per second (m / s), and the velocity value (VelocityContour2) ranges from 0 to 10 meters per second (m / s). The flow velocity at the inlet of the volute is low, and the flow velocity inside the volute is also low, which affects the diversion of the airflow.

[0154] Specifically, Fig.11As shown, in a comparative example of the present invention, a velocity cloud diagram of a circular volute and a circular volute is shown, wherein the velocity unit of the gas velocity in the coordinate system (Velocity in Stn frame) is meters per second (m / s), ranging from 0 to 16 meters per second (m / s). The airflow has serious circumference, low air outlet efficiency, and large turbulence, which affects the air outlet volume.

[0155] Specifically, Fig.12 As shown, in a comparative example of the present invention, a velocity cloud diagram of a square volute and a square volute is shown, wherein the velocity unit of the gas flow rate in the coordinate system (Velocity in Stn frame) is meters per second (m / s), ranging from 0 to 16 meters per second (m / s). Vortexes will appear at the angles on both sides of the square volute (i.e., at S1), affecting the discharge of the airflow, resulting in low air discharge efficiency and affecting the air output.

[0156] Specifically, Fig.13 As shown, in a comparative example of the present invention, another square volute and a velocity cloud diagram of the square volute are shown, wherein the velocity unit of the gas velocity in the coordinate system (Velocity in Stn frame) is meters per second (m / s), ranging from 0 to 16 meters per second (m / s). Vortices still appear at the angles on both sides of the square volute (i.e., at S2), affecting the discharge of the airflow, resulting in low air discharge efficiency and affecting the air output.

[0157] Specifically, Fig.14 As shown, in one embodiment of the utility model, a new volute is shown by setting a first surface, a second surface and a third surface, wherein the gas flow rate (Velocity in Stn frame) in the coordinate system is in meters per second (m / s), ranging from 0 to 16 meters per second (m / s), thereby reducing the vortex at the corners of the volute 110.

[0158] In the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process easier, rather than for indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limitations on the present invention; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0159] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0160] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A purifier, characterized in that: include: A housing, wherein the housing is provided with an air inlet and an air outlet; a volute, the volute being disposed in the housing; an impeller, the impeller being disposed in the volute, a first airflow channel being formed between the outer edge of the impeller and the inner wall of the volute, the impeller being capable of driving the external air of the housing to enter the housing through the air inlet, and after flowing through the impeller and the first airflow channel, to flow out of the housing through the air outlet; Wherein, the wall surface of the volute includes a plurality of surface groups, the plurality of surface groups are arranged around the circumference of the impeller, each of the plurality of surface groups includes a first surface, a second surface and a third surface, and the first surface, the second surface and the third surface are arranged along the circumference of the impeller; In a radial cross section of the purifier, a curvature of the first surface is less than or equal to a curvature of the third surface, and a curvature of the third surface is less than a curvature of the second surface.

2. The purifier according to claim 1, characterized in that: The impeller comprises: The blades are multiple in number, each of the multiple blades includes at least two arc segments, and a second air flow channel is provided between two adjacent blades of the multiple blades, and the second air flow channel narrows from the middle of the blade to the air outlet end of the blade.

3. The purifier according to claim 2, characterized in that: In the axial direction of the impeller, the two ends of the volute are respectively an air inlet end and an air outlet end. The impeller can drive the gas to enter the volute from the air inlet end of the volute, flow through the second air flow channel and the first air flow channel, and then flow out of the volute from the air outlet end of the volute.

4. The purifier according to claim 1, characterized in that: The volute comprises: a body having the first surface, the second surface and the third surface; The collector is annular and located at the air inlet side of the impeller.

5. The purifier according to claim 4, characterized in that: The length of the body in the first direction is a first length; The inner diameter of the side of the collector away from the impeller is a first inner diameter; A ratio of the first inner diameter to the first length is greater than or equal to 0.68 and less than or equal to 0.

85.

6. The purifier according to claim 4, characterized in that: The length of the body in the first direction is a first length; The inner diameter of the side of the collector close to the impeller is a second inner diameter; A ratio of the second inner diameter to the first length is greater than or equal to 0.55 and less than or equal to 0.

65.

7. The purifier according to claim 4, characterized in that: The height of the current collector in the axial direction of the purifier is a first height; The height of the volute in the axial direction of the purifier is a second height; A ratio of the first height to the second height is greater than or equal to 0.11 and less than or equal to 0.

22.

8. The purifier according to claim 4, characterized in that: In the axial direction of the purifier, the collector extends in an arc shape from a side away from the impeller to a side close to the impeller, and the radius of the collector is a first radius; The height of the volute in the axial direction of the purifier is a second height; A ratio of the first radius to the second height is greater than or equal to 0.08 and less than or equal to 0.

19.

9. The purifier according to claim 4, characterized in that: The volute also includes: A transition portion, wherein the transition portion is connected to the collector at a first side in the axial direction of the purifier, the transition portion is connected to the body at a second side in the axial direction of the purifier, and the first side of the transition portion extends to the second side of the transition portion in an arc shape; The radius of the transition portion is a second radius; The height of the volute in the axial direction of the purifier is a second height; A ratio of the second radius to the second height is greater than or equal to 0.11 and less than or equal to 0.

18.

10. The purifier according to claim 9, characterized in that: The inner diameter of the first side of the transition portion is a third inner diameter; The length of the body in the first direction is a first length; A ratio of the third inner diameter to the first length is greater than or equal to 0.65 and less than or equal to 0.

79.

11. The purifier according to claim 9, characterized in that: The inner diameter of the second side of the transition portion is a fourth inner diameter; The length of the body in the first direction is a first length; A ratio of the fourth inner diameter to the first length is greater than or equal to 0.81 and less than or equal to 0.

92.

12. The purifier according to claim 4, characterized in that: The length of the body in the first direction is a first length; The length of the first surface in the first direction is a second length; A ratio of the second length to the first length is greater than or equal to 0.48 and less than or equal to 0.

62.

13. The purifier according to any one of claims 1 to 12, characterized in that: The first surface is a curved surface, the second surface is a curved surface, and the third surface is a curved surface; or The first surface is a plane, the second surface is a curved surface, and the third surface is a plane; or The first surface is a plane, the second surface is a curved surface, and the third surface is a curved surface; or The first surface is a curved surface, the second surface is a curved surface, and the third surface is a flat surface.

14. The purifier according to any one of claims 1 to 12, characterized in that: The first surface is a plane; and / or The third surface is a plane.

15. The purifier according to any one of claims 1 to 12, characterized in that: Each of the face groups comprises two second surfaces, and two sides of one of the two second surfaces are respectively connected to the first side of the first surface and the first side of the third surface; The first side of the other second surface of the two second surfaces is connected to the second side of the third surface, and the second side of the other second surface is connected to the first surface of the adjacent face group.

16. The purifier according to claim 15, characterized in that Also includes: Grille; A filter component, the filter component is arranged in the air intake grille, and the filter component is provided with an air intake passage; The housing is connected to the air intake grille, and the volute is arranged in the housing and communicates with the air intake passage; An air outlet grille is connected to the shell and is located at a side of the volute away from the air inlet passage.

17. The purifier according to claim 16, characterized in that Also includes: A bracket, the bracket is located in the volute and has an air outlet passage between the bracket and the inner wall of the volute; A driving component, wherein the mounting end of the driving component is connected to the bracket, and the driving end of the driving component is connected to the impeller, and can drive the impeller to rotate.

18. The purifier according to claim 17, characterized in that Also includes: Guide vanes, the guide vanes are multiple, the multiple guide vanes are located in the air outlet channel and connected to the bracket; A mesh cover is arranged on the collector of the volute.

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