Purifier

Abstract

The utility model provides a purifier. The purifier comprises a shell, an air outlet grating, a filtering part and a fan assembly, the shell is provided with an air inlet and an air outlet; the air outlet grating is arranged at the air outlet; the filtering part is arranged at the air inlet; the fan assembly is arranged in the shell and can drive gas to enter the shell from the gas inlet, and the gas flows out of the shell from the gas outlet after flowing through the filtering part and the gas outlet grating; the air outlet grid comprises a frame, a mounting part and an air outlet part; the mounting part is arranged in the frame; the multiple air outlet parts are arranged along the inner circumference of the frame, the first ends of the air outlet parts are connected with the mounting part, and the second ends of the air outlet parts are connected with the frame; in the axial direction of the fan assembly, the width of the air outlet part is increased from the side, close to the interior of the shell, of the air outlet part to the side, close to the exterior of the shell, of the air outlet part. According to the utility model, through the shape design of the air outlet part and the water-drop-shaped design, the resistance borne by the air flow during exhausting is reduced, and the air outlet noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification and specifically provides a purifier. Background Art

[0002] At present, air purifiers, as a room air purification product, are becoming more and more popular among consumers because they can significantly reduce tiny particles such as formaldehyde in the house. With the development of technology, consumers have higher and higher requirements for the performance and user experience of purifiers.

[0003] The core standard of a purifier is a large air volume. In related technologies, in order to ensure the safe use of the purifier, an air outlet grille is arranged at the air outlet of the purifier. Although the air outlet grille can prevent foreign matter from entering the interior of the purifier, the air outlet grille will also block the air outlet of the purifier at the air outlet, and generate resistance to air outflow at the air outlet, resulting in slow air outlet speed and low air flow of the purifier, which affects user use. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0005] To this end, one aspect of the utility model provides a purifier.

[0006] In view of this, one aspect of the utility model proposes a purifier, which includes a shell, an air outlet grille, a filter component and a fan assembly, the shell having an air inlet and an air outlet; the air outlet grille is arranged at the air outlet; the filter component is arranged at the air inlet; the fan assembly is arranged in the shell, and the fan assembly can drive the gas to enter the shell from the air inlet, flow through the filter component and the air outlet grille, and then flow out of the shell from the air outlet; the air outlet grille includes a frame, a mounting portion and an air outlet portion; the mounting portion is arranged in the frame; there are multiple air outlet portions, and the multiple air outlet portions are arranged along the inner circumference of the frame, the first ends of the multiple air outlet portions are connected to the mounting portion, and the second ends of the air outlet portions are connected to the frame; wherein, in the axial direction of the fan assembly, the width of the air outlet portion increases from the side of the air outlet portion close to the inside of the shell to the side of the air outlet portion close to the outside of the shell.

[0007] The purifier proposed in the utility model is used for purifying air. The purifier comprises a shell, which is the main body of the purifier. The shell is a closed structure for accommodating an internal filtering component or a purifying component.

[0008] The shell has an air outlet, which is an opening for the treated gas to flow out of the shell. The air outlet grille is arranged at the air outlet, and the gas in the shell can flow out of the shell through the air outlet grille. The air outlet grille allows the gas to pass through, but can prevent larger particles or liquids from dripping.

[0009] The housing is also provided with an air inlet, through which the airflow can enter the interior of the housing, and a filter component is provided at the air inlet. The filter component includes filter media such as a filter screen, and the filter component is the core component of the purifier. Its main function is to filter out pollutants such as dust, pollen, bacteria, and viruses in the airflow through the filter screen and other media, so that the airflow is initially purified.

[0010] The fan assembly is arranged in the shell, and the fan assembly can drive the gas to enter the shell from the air inlet, flow through the filter component and the air outlet grille, and then flow out of the shell from the air outlet, thereby realizing the flow and purification of the air flow.

[0011] The air outlet grille includes a frame, a mounting portion and an air outlet portion. The frame provides a stable support for the entire air outlet grille, and the mounting portion located in the frame ensures that the air outlet grille can be firmly installed at the air outlet of the purifier. Multiple air outlet portions are arranged along the inner periphery of the frame to form an air flow channel.

[0012] In the axial direction of the fan assembly, the width of the air outlet portion gradually increases from the side close to the inside of the shell to the side close to the outside of the shell, forming a shape similar to a water drop. The above shape setting enables the air outlet portion to guide the airflow.

[0013] Specifically, when the purified air flows through these air outlets, the width of the air outlets gradually increases, allowing the airflow to pass more smoothly, reducing the resistance on the windward side. This design not only improves the smoothness of the air outlet, but also effectively increases the flow rate of the air outlet, thereby ensuring that the purifier can efficiently deliver clean air to the indoor environment.

[0014] In addition, this design brings another significant advantage, which is reduced noise. Since the resistance and turbulence of the airflow are reduced, the noise during equipment operation is also reduced accordingly, thus creating a quieter and more comfortable living environment for users.

[0015] In summary, the purifier proposed by the utility model improves the air outlet effect of the purifier by designing the shape of the air outlet, utilizing the unique water drop shape design and airflow guiding function, reduces the resistance of the airflow during discharge, increases the flow rate of the air outlet, reduces the air outlet noise, and improves the user experience. In addition, the purifier in the above technical solution provided by the utility model may also have the following additional technical features:

[0016] In some technical solutions of the present utility model, optionally, in the radial direction of the fan assembly, the first end of the air outlet portion extends to the second end of the air outlet portion in an arc shape.

[0017] In this technical solution, in the radial direction of the fan assembly, the first end of the air outlet portion extends to the second end of the air outlet portion in an arc shape, thereby effectively improving the uniformity of the airflow and reducing the airflow noise.

[0018] Specifically, by designing the air outlet to extend in an arc shape from the first end to the second end, the airflow can be made smoother when passing through the air outlet grille. This arc-shaped design helps to reduce turbulence and eddy currents of the airflow, thereby reducing noise and improving the stability of the airflow.

[0019] In addition, the arc-shaped extension design can also ensure that the gaps between the air outlets are more evenly distributed. When the airflow passes through the air outlet grille, the airflow in each part is more balanced, avoiding the situation where the airflow is too large or too small in some areas.

[0020] In traditional linear air outlet grilles, there is often a large difference in air flow speed between the inner circle and the outer circle. The utility model extends the air outlet portion from the first end to the second end in an arc shape, which helps to reduce this speed difference, making the air flow more uniform, thereby improving overall comfort and efficiency. Since the air flow is more evenly distributed, turbulence and eddies are reduced, the noise generated by the air flow can be effectively reduced.

[0021] In some technical solutions of the present invention, optionally, the ratio of the radius of the inner edge of the air outlet portion to the length of the outer edge of the frame is greater than or equal to 0.35 and less than or equal to 0.46.

[0022] In this technical solution, the utility model sets the relationship between the inner edge of the air outlet and the outer edge of the frame. Specifically, the utility model sets the ratio of the inner edge radius of the air outlet to the outer edge length of the frame within the range of 0.35 to 0.46.

[0023] By setting the above numerical range, the ratio of the inner edge radius of the air outlet to the outer edge length of the frame is moderate, and the gap between the air outlets is moderate in size, neither too narrow nor too wide. The appropriate gap size helps to reduce the resistance of the airflow through the rear mesh cover, because the airflow will produce a higher pressure loss when passing through a smaller gap, while a gap that is too large may cause uneven airflow distribution. Reducing the resistance of the air outlet means that the purifier can more easily discharge the treated air, thereby increasing the overall flow rate of the purifier.

[0024] The arc-shaped extended air outlet design allows the airflow to transition more smoothly when passing through the air outlet grille, reducing the direct impact of the airflow on the air outlet grille. When the ratio of the inner edge radius of the air outlet to the outer edge length of the frame is between 0.35 and 0.46, the effect of this smooth transition is most significant. The impact of the airflow on the air outlet grille is reduced, and the noise generated by the airflow is reduced.

[0025] In some technical solutions of the utility model, optionally, the air outlet portion includes a support portion and a first air guide portion, the first air guide portion is arranged on a side of the support portion close to the inside of the shell, and a surface of the first air guide portion away from the support portion extends in an arc shape.

[0026] In this technical solution, the utility model sets an air outlet, which includes a support portion and a first air guide portion. The support portion provides stable support for the first air guide portion and the second air guide portion. The support portion ensures the structural strength and stability of the entire air outlet, so that when a high-speed airflow passes through the air outlet, the air outlet will not deform or vibrate, which helps to reduce the noise generated by structural instability.

[0027] The first air guide is located on the side of the support portion close to the inside of the shell, and its surface away from the support portion extends in an arc shape. This arc-shaped design can guide the airflow to flow out smoothly from the inside of the shell, avoiding a sharp turn or collision of the airflow when it flows out. The arc-shaped surface can also effectively disperse the impact force of the airflow, reduce the direct impact on the air outlet grille, and thus reduce aerodynamic noise.

[0028] In some technical solutions of the utility model, optionally, the air outlet portion further includes a second air guide portion, the second air guide portion is arranged on a side of the support portion close to the outside of the shell, and a surface of the second air guide portion on a side away from the support portion extends in an arc shape.

[0029] In this technical solution, the air outlet also includes a second air guide. The second air guide is located on the side of the support portion close to the outside of the shell, and its surface away from the support portion also extends in an arc shape. Its function is to further guide the airflow flowing out of the first air guide to ensure that the airflow can smoothly enter the external environment instead of suddenly diffusing or generating vortices. Through the guidance of the arc-shaped surface, the second air guide effectively reduces the impact of the airflow with the external environment, further reducing the aerodynamic noise.

[0030] When the first air guide portion and the second air guide portion are combined, the cross section of the air outlet portion is in the shape of a water drop. This shape has good aerodynamic performance in fluid mechanics. The water drop-shaped cross section can reduce the resistance of the airflow when passing through, allowing the airflow to pass through the air outlet more smoothly. At the same time, the water drop-shaped cross section also helps to reduce the separation of the airflow and the generation of vortices, thereby reducing aerodynamic noise.

[0031] In some technical solutions of the present utility model, optionally, the width of the first air guide portion is smaller than the width of the second air guide portion.

[0032] In this technical solution, the width of the first air guide portion is smaller than the width of the second air guide portion. This design consideration is to enable the first air guide portion and the second air guide portion to better match the middle support portion.

[0033] Since the support portion is located between the first air guide portion and the second air guide portion, designing air guide portions of different widths can ensure that they match the structure of the support portion to form a stable whole.

[0034] The first air guide portion is narrower and can better fit the side of the support portion close to the inside of the shell, while the second air guide portion is wider and can smoothly transition to the outside of the shell. Such a structure helps to maintain the stability and rigidity of the entire air outlet portion.

[0035] The narrower design of the first air guide portion helps the air flow to flow out of the shell in a compact manner, thereby preventing the air flow from being excessively diffused when flowing out.

[0036] The second air guide portion is relatively wide, and can provide a gradually diffusing space for the airflow flowing out of the first air guide portion, so that the airflow enters the external environment more smoothly, and the turbulence and eddy of the airflow are reduced.

[0037] In some technical solutions of the present utility model, optionally, the ratio of the height of the support portion to the height of the frame is greater than or equal to 0.09 and less than or equal to 0.16.

[0038] In this technical solution, in the design of the air outlet grille, the ratio of the height of the support portion to the height of the frame is a key parameter. The size of this ratio directly affects the structural stability of the air outlet grille, the distribution of the air flow and the overall performance of the purifier. The utility model sets the ratio of the height of the support portion to the height of the frame in the range of 0.09 to 0.16.

[0039] When the ratio of the height of the support portion to the height of the frame is within this range, the support portion can provide sufficient support force to ensure the overall structural stability of the air outlet grille, which helps prevent the air outlet grille from deforming or vibrating when high-speed air flows through, thereby maintaining its long-term stable performance.

[0040] The appropriate height of the support part can affect the distribution of airflow. Within this ratio range, the height of the support part is neither too high to hinder the airflow nor too low to cause uneven airflow distribution. This helps to achieve uniform distribution of airflow and improve the efficiency of the purifier.

[0041] In some technical solutions of the present invention, optionally, a ratio of a radius of a surface of a side of the first air guide portion away from the support portion to a height of the frame is greater than or equal to 0.08 and less than or equal to 0.13.

[0042] In the technical solution, in the design of the air outlet grille, the ratio of the radius of the surface of the first air guide away from the support portion to the height of the frame is a key parameter. The size of this ratio directly affects the distribution of the airflow and the overall performance of the purifier. In the utility model, the ratio of the radius of the surface of the first air guide away from the support portion to the height of the frame is greater than or equal to 0.08 and less than or equal to 0.13.

[0043] When the ratio of the radius of the surface of the first air guide portion away from the support portion to the height of the frame is within this range, the first air guide portion can guide the air smoothly, and can reduce the turbulence and eddy current generated when the airflow passes through the air outlet grille, thereby reducing aerodynamic noise.

[0044] In some technical solutions of the present invention, optionally, a ratio of a radius of a surface of the second air guide portion on a side away from the support portion to a height of the frame is greater than or equal to 0.17 and less than or equal to 0.22.

[0045] In the technical solution, in the design of the air outlet grille, the ratio of the radius of the surface of the second air guide away from the support portion to the height of the frame is a key parameter. The size of this ratio directly affects the distribution of the airflow and the overall performance of the purifier. The utility model sets the ratio of the radius of the surface of the second air guide away from the support portion to the height of the frame to be greater than or equal to 0.17 and less than or equal to 0.22.

[0046] When the ratio of the radius of the surface of the second air guide portion away from the support portion to the height of the frame is within this range, the second air guide portion can guide the air smoothly, which can reduce the turbulence and eddy currents generated when the airflow passes through the air outlet grille, thereby reducing aerodynamic noise.

[0047] In some technical solutions of the present utility model, optionally, the plurality of gas outlets are arranged in a deflected manner along the rotation direction of the gas in the shell.

[0048] In this technical solution, in order to ensure smooth flow of gas and effective separation effect, multiple gas outlets should be arranged in a deflected manner along the rotation direction of the gas in the shell.

[0049] This arrangement ensures that during the rotation of the gas, solid or liquid particles are thrown toward the outer wall under the action of centrifugal force, while clean gas flows out through the gas outlet.

[0050] In some technical schemes of the utility model, optionally, the shell includes an air intake grille having an air inlet; the filter component is provided with an air intake channel; the fan assembly includes a volute and an impeller; the volute is arranged in the shell and is connected to the air intake channel; the impeller is located in the volute; the air outlet grille is connected to the shell and is located on the side of the volute away from the air intake channel.

[0051] In this technical solution, the shell includes an air intake grille, which can be located at the front end of the purifier. The air intake grille has an air inlet. The main function of the air intake grille is to guide air into the interior of the purifier while preventing larger particles or foreign matter from directly entering to avoid damage to the internal components of the purifier.

[0052] The filter component is provided with an air intake passage, and air enters the air intake passage and is filtered by the filter component.

[0053] The fan assembly includes a volute and an impeller. The volute is arranged inside the housing and communicates with the air inlet channel. The impeller is located inside the volute. When the motor drives the impeller to rotate, air is sucked into the volute, filtered by the filter component, and then discharged from the air outlet of the volute, ensuring that the air is fully circulated and filtered inside the purifier.

[0054] The air outlet grille is connected to the housing and is located on the side of the housing away from the air inlet channel. The air outlet grille is the outlet of the purified air. Through the air outlet grille, users can feel the fresh air processed by the purifier. The design of the air outlet grille can adjust the direction and angle of the air outlet to meet the needs of different users.

[0055] 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.

[0056] In this technical solution, the purifier also includes a bracket and a driving component, and the bracket and the driving component work together to ensure the high efficiency and stability of air purification.

[0057] The bracket is located in the volute, and an air outlet passage is provided between the bracket and the inner wall of the volute, and the purified air flows out smoothly through the air outlet passage. Meanwhile, the stability of the internal structure of the volute can be maintained by the bracket.

[0058] The bracket is used to build an air outlet channel, which ensures the smoothness of air flow and avoids unsmooth air flow or dead corners caused by structural obstructions, optimizes the efficiency of air purification, and improves the performance of the purifier.

[0059] The mounting end of the driving component is connected to the bracket, and the driving component is used to transmit power to the impeller.

[0060] The driving end of the driving component is connected to the impeller directly or through a transmission mechanism to drive the impeller to rotate.

[0061] Through the driving components, the air flow can be accurately adjusted to meet the air purification needs in different scenarios.

[0062] In some technical solutions of the utility model, optionally, the purifier further includes: guide vanes, the guide vanes are multiple, and the multiple guide vanes are located in the air outlet channel and connected to the bracket.

[0063] In this technical solution, the purifier also includes guide vanes, which are mainly used to guide and control the flow of air, slow down, pressurize and rectify the high-speed airflow thrown out by the impeller, ensure that the airflow can pass through the air outlet channel evenly, and improve the overall performance of the purifier.

[0064] There are multiple guide vanes in the purifier, and the multiple guide vanes are located in the air outlet channel and connected to the bracket, which can improve the stability and reliability of the guide vanes during operation.

[0065] In some technical solutions of the present utility model, optionally, the purifier further includes a collector and a mesh cover, the collector is connected to the volute and is located on a side of the impeller close to the air inlet channel; the mesh cover is arranged on the collector.

[0066] In this technical solution, the purifier includes a collector, which is connected to the volute and is located on the side of the impeller close to the air inlet channel. The collector can effectively guide and collect the air flow so that it can enter the purifier more smoothly and more concentratedly. The collector helps to improve the overall performance of the purifier and ensure that the air can pass through the purifier efficiently and be fully filtered and purified.

[0067] The mesh cover is set on the collector. It is mainly used to protect the collector and prevent large particles of dust or debris from entering the collector to prevent damage or reduce the purification effect. At the same time, the mesh cover can also play a certain filtering role, which can initially filter out some larger particles of pollutants in the air, providing more favorable conditions for the subsequent purification process.

[0068] 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

[0069] 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:

[0070] Figure 1 One of the structural schematic diagrams of the air outlet grille according to an embodiment of the utility model is shown;

[0071] Figure 2 A second structural schematic diagram of an air outlet grille according to an embodiment of the utility model is shown;

[0072] Figure 3 A third structural schematic diagram of an air outlet grille according to an embodiment of the utility model is shown;

[0073] Figure 4 Shows Figure 3 A simulation diagram of the air outlet grille in the illustrated embodiment;

[0074] Figure 5 One of the structural schematic diagrams of the air outlet portion of the air outlet grille according to an embodiment of the utility model is shown;

[0075] Figure 6A second structural schematic diagram of an air outlet portion of an air outlet grille according to an embodiment of the utility model is shown;

[0076] Figure 7 A third structural schematic diagram of the air outlet portion of the air outlet grille according to an embodiment of the utility model is shown;

[0077] Figure 8 One of the structural schematic diagrams of a purifier according to an embodiment of the utility model is shown;

[0078] Fig. 9 A second structural schematic diagram of a purifier according to an embodiment of the utility model is shown;

[0079] Fig.10 Shows Fig. 9 A cross-sectional view AA of the purifier in the illustrated embodiment;

[0080] Fig.11 A simulation diagram of a linear radial air outlet grille is shown.

[0081] in, Figures 1 to 10 The corresponding relationship between the reference numerals and component names in the figure is:

[0082] 100 purifier, 110 air outlet grille, 112 frame, 114 outer edge, 116 mounting portion, 118 air outlet, 120 first end, 122 second end, 124 inner edge, 126 support portion, 128 first air guide portion, 130 second air guide portion, 140 air inlet grille, 142 air inlet, 150 filter component, 152 air inlet channel, 160 shell, 162 air outlet, 170 fan assembly, 172 volute, 174 impeller, 180 air flow channel, 182 first acceleration section, 184 second acceleration section, 186 deceleration section, 190 bracket, 191 air outlet channel, 192 driving component, 193 mounting end, 194 guide vane, 195 driving end, 196 collector, 198 mesh cover. DETAILED DESCRIPTION

[0083] 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.

[0084] 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.

[0085] Refer to the following Figures 1 to 11A purifier 100 according to some embodiments of the present invention is described.

[0086] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Fig.10 As shown, in some embodiments of the present invention, a purifier 100 is proposed, the purifier 100 includes a housing 160, an air outlet grille 110, a filter component 150 and a fan assembly 170, the housing 160 has an air inlet 142 and an air outlet 162, the air outlet grille 110 is arranged at the air outlet 162, and the filter component 150 is arranged at the air inlet 142; the fan assembly 170 is arranged in the housing 160, and the fan assembly 170 can drive the gas to enter the housing 160 from the air inlet 142, flow through the filter component 150 and the air outlet grille 110, and then flow out from the air outlet 162 Shell 160; the air outlet grille 110 includes a frame 112, a mounting portion 116 and an air outlet portion 118, the mounting portion 116 is arranged in the frame 112; there are multiple air outlet portions 118, and the multiple air outlet portions 118 are arranged along the inner periphery of the frame 112, the first end 120 of the air outlet portion 118 is connected to the mounting portion 116, and the second end 122 of the air outlet portion 118 is connected to the frame 112; wherein, in the axial direction of the fan assembly 170, the width of the air outlet portion 118 increases from the side of the air outlet portion 118 close to the inside of the shell 160 to the side of the air outlet portion 118 close to the outside of the shell 160.

[0087] In this embodiment, the utility model proposes a purifier 100, which is used to purify air. The purifier 100 includes a shell 160, which is the main part of the purifier 100. The shell 160 is a closed structure for accommodating an internal filter component 150 or a purification component.

[0088] Specifically, the housing 160 is made of metal, plastic or other durable materials to ensure that the housing 160 has high structural strength and good sealing performance.

[0089] The housing 160 has an air outlet 162, which is an opening for the processed gas to flow out of the housing 160. The air outlet grille 110 is disposed at the air outlet 162, and the gas in the housing 160 can flow out of the housing 160 through the air outlet grille 110. The air outlet grille 110 allows the gas to pass through, but can prevent larger particles or liquids from dripping.

[0090] The housing 160 is also provided with an air inlet 142, through which the air flow can enter the interior of the housing 160, and the filter component 150 is provided at the air inlet 142. The filter component 150 includes a filter medium such as a filter screen, and the filter component 150 is a core component of the purifier 100, and its main function is to filter out pollutants such as dust, pollen, bacteria, and viruses in the air flow through the filter screen and other media, so that the air flow is preliminarily purified.

[0091] The fan assembly 170 is disposed in the housing 160 , and can drive the gas to enter the housing 160 from the air inlet 142 , flow through the filter component 150 and the air outlet grille 110 , and then flow out of the housing 160 from the air outlet 162 , thereby achieving the flow and purification of the air flow.

[0092] As for the specific structure of the air outlet grille 110, the utility model is configured such that the air outlet grille 110 includes a frame 112, a mounting portion 116 and an air outlet portion 118. The frame 112 provides a stable support for the entire air outlet grille 110. The mounting portion 116 located in the frame 112 ensures that the air outlet grille 110 can be stably mounted at the air outlet 162 of the purifier 100. A plurality of air outlet portions 118 are arranged along the inner periphery of the frame 112 to form an air flow channel.

[0093] In the axial direction of the fan assembly 170 ( Fig.10 The width of the air outlet 118 gradually increases from the side close to the inside of the housing 160 to the side close to the outside of the housing 160, forming a shape similar to a water drop. The above shape setting enables the air outlet 118 to guide the airflow.

[0094] Specifically, when the purified air flows through the air outlets 118, the air flow can pass more smoothly due to the gradually increasing width of the air outlets 118, thereby reducing the resistance on the windward side. This design not only improves the smoothness of the air outlet, but also effectively increases the flow rate of the air outlet 162, thereby ensuring that the purifier 100 can efficiently deliver clean air to the indoor environment.

[0095] In addition, this design brings another significant advantage, which is reduced noise. Since the resistance and turbulence of the airflow are reduced, the noise during equipment operation is also reduced accordingly, thus creating a quieter and more comfortable living environment for users.

[0096] In summary, the air outlet grille 110 proposed in the present invention improves the air outlet effect of the purifier 100 by designing the shape of the air outlet portion 118 and utilizing a unique teardrop-shaped design and airflow guiding function, reduces the resistance encountered by the airflow during discharge, increases the flow rate of the air outlet 162, reduces the air outlet noise, and improves the user experience.

[0097] Specifically, the air outlet grille 110 with a semi-teardrop-shaped air outlet portion 118 proposed in the utility model can not only significantly increase the air volume of the purifier 100, but also reduce the air outlet noise of the purifier 100. Finally, when the air outlet grille 110 is installed on the purifier 100, the air volume of the purifier 100 is increased by 5%, and the noise is reduced by 0.8dB, thereby improving the performance of the purifier 100.

[0098] like Figure 6 As shown, in some embodiments of the present invention, optionally, an airflow channel 180 is provided between two adjacent air outlet portions 118 among the multiple air outlet portions 118, and the airflow channel 180 includes a first acceleration section 182 and a second acceleration section 184, and the first acceleration section 182 is closer to the fan assembly 170 than the second acceleration section 184.

[0099] In this embodiment, among the multiple air outlets 118, an airflow channel 180 is arranged between two adjacent air outlets 118, and the airflow can flow through the airflow channel 180. The airflow channel 180 includes a first acceleration section 182 and a second acceleration section 184. The first acceleration section 182 is closer to the fan assembly 170 than the second acceleration section 184. After the airflow flows out radially from the fan assembly 170, it rotates and flows upward. The airflow channel 180 can follow the flow direction of the airflow, reduce the airflow resistance and the impact of the airflow on the air outlet 118, and reduce noise.

[0100] After the airflow enters the airflow channel 180 , when it enters the first acceleration section 182 , the first acceleration section 182 mainly guides the air in an arc shape, thereby reducing the impact of the airflow on the air outlet 118 and reducing noise.

[0101] After the airflow enters the airflow channel 180, when it enters the position of the second acceleration section 184, the airflow can be accelerated to flow upward, reducing the flow loss caused by the accumulation of airflow in the airflow channel 180 and increasing the air output.

[0102] Specifically, if Figure 6 As shown, the airflow channel 180 further includes a deceleration section 186. The second acceleration section 184 is closer to the fan assembly 170 than the deceleration section 186. The deceleration section 186 can make the airflow softer when it flows out.

[0103] Specifically, if Figure 6 As shown, in the air flow channel 180, the end of the first acceleration section 182 away from the second acceleration section 184 is the air flow inlet, and the end of the deceleration section 186 away from the second acceleration section 184 is the air flow outlet. Figure 6 The arrows in the figure show the direction of air flow.

[0104] like Figure 1 and Fig.10As shown, in some embodiments of the present invention, optionally, in the radial direction of the fan assembly 170 , the first end 120 of the air outlet portion 118 to the second end 122 of the air outlet portion 118 extend in an arc shape.

[0105] In this embodiment, in the radial direction of the fan assembly 170 ( Fig.10 The first end 120 of the air outlet portion 118 extends to the second end 122 of the air outlet portion 118 in an arc shape, thereby effectively improving the uniformity of the airflow and reducing the airflow noise.

[0106] Specifically, by designing the air outlet portion 118 to extend in an arc shape from the first end 120 to the second end 122, the airflow can be made smoother when passing through the air outlet grille 110. This arc-shaped design helps to reduce turbulence and eddy currents in the airflow, thereby reducing noise and improving the stability of the airflow.

[0107] In addition, the arc-shaped extension design can also ensure that the gaps between the air outlets 118 are more evenly distributed. When the airflow passes through the air outlet grille 110, the airflow in each part is more balanced, avoiding the situation where the airflow in some areas is too large or too small.

[0108] In a conventional linear air outlet grille, there is often a large difference in air flow speed between the inner circle and the outer circle. The utility model extends the first end 120 of the air outlet portion 118 to the second end 122 of the air outlet portion 118 in an arc shape, which helps to reduce this speed difference, making the air flow more uniform, thereby improving overall comfort and efficiency. Since the air flow is more evenly distributed, turbulence and eddies are reduced, the noise generated by the air flow can be effectively reduced.

[0109] like Figure 3 As shown, in some embodiments of the present invention, optionally, the ratio of the radius of the inner edge 124 of the air outlet 118 to the length of the outer edge 114 of the frame 112 is greater than or equal to 0.35 and less than or equal to 0.46.

[0110] In this embodiment, the utility model sets the relationship between the inner edge 124 of the air outlet portion 118 and the outer edge 114 of the frame 112. Specifically, the utility model sets the ratio of the radius of the inner edge 124 of the air outlet portion 118 to the length of the outer edge 114 of the frame 112 within the range of 0.35 to 0.46.

[0111] By setting the above numerical range, the ratio of the radius of the inner edge 124 of the air outlet 118 to the length of the outer edge 114 of the frame 112 is moderate, and the gap between the air outlets 118 is moderate in size and will not be too narrow or too wide. The appropriate gap size helps to reduce the resistance of the airflow when passing through the rear mesh cover 198, because the airflow will produce a higher pressure loss when passing through a smaller gap, and a too large gap may cause uneven airflow distribution. Reducing the resistance of the air outlet 118 means that the purifier 100 can more easily discharge the treated air, thereby increasing the overall flow rate of the purifier 100.

[0112] The arc-shaped extended air outlet 118 design enables the airflow to transition more smoothly when passing through the air outlet grille 110, reducing the direct impact of the airflow on the air outlet grille 110. When the ratio of the radius of the inner edge 124 of the air outlet 118 to the length of the outer edge 114 of the frame 112 is between 0.35 and 0.46, the effect of this smooth transition is most significant, reducing the impact of the airflow on the air outlet grille 110 and reducing the noise generated by the airflow.

[0113] Specifically, the ratio of the radius of the outer edge 114 of the air outlet portion 118 to the length of the outer edge 114 of the frame 112 may be set to 0.35, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45 or 0.46.

[0114] like Figure 1 , Figure 5 and Figure 7 As shown, in some embodiments of the present invention, optionally, the air outlet portion 118 includes a support portion 126 and a first air guide portion 128. The first air guide portion 128 is arranged on a side of the support portion 126 close to the inside of the housing 160, and the surface of the first air guide portion 128 on a side away from the support portion 126 extends in an arc shape; in this embodiment, the present invention sets the air outlet portion 118, and the air outlet portion 118 includes a support portion 126, a first air guide portion 128 and a second air guide portion 130. The support portion 126 provides stable support for the first air guide portion 128 and the second air guide portion 130. The support portion 126 ensures the structural strength and stability of the entire air outlet portion 118, so that when a high-speed airflow passes through the air outlet portion 118, the air outlet portion 118 will not be deformed or vibrated, which helps to reduce the noise caused by structural instability.

[0115] The first air guide portion 128 is located on a side of the support portion 126 close to the inside of the housing 160, and its surface away from the support portion 126 extends in an arc shape. This arc-shaped design can guide the airflow to flow out smoothly from the inside of the housing 160, avoiding a sharp turn or collision of the airflow when it flows out. The arc-shaped surface can also effectively disperse the impact force of the airflow, reduce the direct impact on the air outlet grille 110, and thus reduce aerodynamic noise.

[0116] like Figure 1 and Figure 5 As shown, in some embodiments of the present invention, optionally, the air outlet portion 118 also includes a second air guide portion 130, which is disposed on a side of the support portion 126 close to the outside of the shell 160, and a surface of the second air guide portion 130 on a side away from the support portion 126 extends in an arc shape.

[0117] In this embodiment, the air outlet 118 further includes a second air guide 130, which is located on the side of the support 126 close to the outside of the housing 160, and its surface away from the support 126 also extends in an arc shape. Its function is to further guide the airflow flowing out of the first air guide 128, ensuring that the airflow can smoothly enter the external environment instead of suddenly diffusing or generating vortices. Through the guidance of the arc surface, the second air guide 130 effectively reduces the impact of the airflow with the external environment, and further reduces the aerodynamic noise.

[0118] When the first air guide portion 128 and the second air guide portion 130 are combined, the cross section of the air outlet portion 118 is in the shape of a water drop. This shape has good aerodynamic performance in fluid mechanics. The water drop-shaped cross section can reduce the resistance of the airflow when passing through, so that the airflow passes through the air outlet portion 118 more smoothly. At the same time, the water drop-shaped cross section also helps to reduce the separation of the airflow and the generation of vortices, thereby reducing aerodynamic noise.

[0119] In summary, by designing the air outlet portion 118 to include a support portion 126, a first air guide portion 128 and a second air guide portion 130, and making the surfaces of the first air guide portion 128 and the second air guide portion 130 extend in an arc shape to form a teardrop-shaped cross-section, the impact of the airflow on the air outlet grille 110 can be effectively reduced, the aerodynamic impact noise can be reduced, and the smoothness of the airflow can be improved.

[0120] Specifically, the support portion 126 , the first air guide portion 128 , and the second air guide portion 130 are an integrated structure, and the air outlet portion 118 has a higher structural strength.

[0121] Specifically, Figure 7 As shown, the surface of the second air guide portion 130 away from the support portion 126 may also be a plane, so that the airflow is evenly distributed to each area. Figure 5 As shown, in some embodiments of the present invention, optionally, the width of the first air guide portion 128 is smaller than the width of the second air guide portion 130 .

[0122] In this embodiment, the width of the first air guide portion 128 is smaller than the width of the second air guide portion 130 . This design consideration is to enable the first air guide portion 128 and the second air guide portion 130 to better match the middle support portion 126 .

[0123] Since the support portion 126 is located between the first air guiding portion 128 and the second air guiding portion 130 , designing air guiding portions of different widths can ensure that they match the structure of the support portion 126 to form a stable whole.

[0124] The first air guide portion 128 is narrower and can better fit the side of the support portion 126 close to the inside of the shell 160, while the second air guide portion 130 is wider and can smoothly transition to the outside of the shell 160. Such a structure helps to maintain the stability and rigidity of the entire air outlet portion 118.

[0125] The narrow design of the first air guide portion 128 helps the air flow to flow out of the housing 160 in a compact manner, thereby preventing the air flow from being excessively diffused when flowing out.

[0126] The second air guide portion 130 is relatively wide, and can provide a gradually diffusing space for the airflow flowing out of the first air guide portion 128 , so that the airflow enters the external environment more smoothly, and the turbulence and eddy current of the airflow are reduced.

[0127] like Figure 3 and Figure 5 As shown, in some embodiments of the present invention, optionally, the ratio of the height of the support portion 126 to the height of the frame 112 is greater than or equal to 0.09 and less than or equal to 0.16.

[0128] In this embodiment, in the design of the air outlet grille 110, the ratio of the height of the support portion 126 to the height of the frame 112 is a key parameter. The size of this ratio directly affects the structural stability of the air outlet grille 110, the distribution of the air flow, and the overall performance of the purifier 100. The utility model sets the ratio of the height of the support portion 126 to the height of the frame 112 in the range of 0.09 to 0.16.

[0129] When the ratio of the height of the support portion 126 to the height of the frame 112 is within this range, the support portion 126 can provide sufficient support force to ensure the overall structural stability of the air outlet grille 110. This helps prevent the air outlet grille 110 from deforming or vibrating when high-speed air flows through, thereby maintaining its long-term stable performance.

[0130] The appropriate height of the support portion 126 can affect the distribution of the airflow. Within this ratio range, the height of the support portion 126 is neither too high to hinder the airflow nor too low to cause uneven airflow distribution. This helps to achieve uniform distribution of the airflow and improve the efficiency of the purifier 100.

[0131] When the ratio of the height of the support portion 126 to the height of the frame 112 is appropriate, the turbulence and eddy current generated when the airflow passes through the air outlet grille 110 can be reduced, thereby reducing aerodynamic noise.

[0132] Specifically, the ratio of the height of the support portion 126 to the height of the frame 112 may be 0.09, 0.10, 0.12, 0.13, 0.14, 0.15, or 0.16.

[0133] like Figure 3 and Figure 5 As shown, in some embodiments of the present invention, optionally, the ratio of the radius of the surface of the first air guide portion 128 away from the support portion 126 to the height of the frame 112 is greater than or equal to 0.08 and less than or equal to 0.13.

[0134] In this embodiment, in the design of the air outlet grille 110, the ratio of the radius of the surface of the first air guide 128 away from the support portion 126 to the height of the frame 112 is a key parameter. The size of this ratio directly affects the distribution of the airflow and the overall performance of the purifier 100. In the present invention, the ratio of the radius of the surface of the first air guide 128 away from the support portion 126 to the height of the frame 112 is greater than or equal to 0.08 and less than or equal to 0.13.

[0135] When the ratio of the radius of the surface of the first air guide portion 128 on the side away from the support portion 126 to the height of the frame 112 is within this range, the first air guide portion 128 can guide the air smoothly, which can reduce the turbulence and eddy currents generated when the airflow passes through the air outlet grille 110, thereby reducing aerodynamic noise.

[0136] Specifically, a ratio of a radius of a surface of the first air guiding portion 128 away from the supporting portion 126 to a height of the frame 112 may be 0.08, 0.09, 0.10, 0.11, 0.12 or 0.13.

[0137] like Figure 3 and Figure 5 As shown, in some embodiments of the present invention, optionally, the ratio of the radius of the surface of the second air guide portion 130 away from the support portion 126 to the height of the frame 112 is greater than or equal to 0.17 and less than or equal to 0.22.

[0138] In this embodiment, in the design of the air outlet grille 110, the ratio of the radius of the surface of the second air guide 130 away from the support portion 126 to the height of the frame 112 is a key parameter. The size of this ratio directly affects the distribution of the airflow and the overall performance of the purifier 100. In the present invention, the ratio of the radius of the surface of the second air guide 130 away from the support portion 126 to the height of the frame 112 is greater than or equal to 0.17 and less than or equal to 0.22.

[0139] When the ratio of the radius of the surface of the second air guide portion 130 on the side away from the support portion 126 to the height of the frame 112 is within this range, the second air guide portion 130 can guide the air smoothly, which can reduce the turbulence and eddy currents generated when the airflow passes through the air outlet grille 110, thereby reducing aerodynamic noise.

[0140] Specifically, a ratio of a radius of a surface of the second air guide portion 130 away from the support portion 126 to a height of the frame 112 may be 0.17, 0.18, 0.19, 0.20, 0.21 or 0.22.

[0141] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, optionally, the plurality of gas outlets 118 are arranged in a deflected manner along the rotation direction of the gas in the housing 160 .

[0142] In this embodiment, in order to ensure smooth flow of gas and effective separation effect, multiple air outlets 118 should be arranged along the rotation direction of the gas in the shell 160, and the phase of the pulse airflow acting on the volute 172 will be staggered, thereby reducing the pulse force on the volute 172 and greatly reducing the rotation noise of the fan assembly 170.

[0143] like Figure 8 , Fig. 9 and Fig.10 As shown, in some embodiments of the utility model, optionally, the shell 160 also includes an air intake grille 140, the air intake grille 140 has an air inlet 142; the volute 172 impeller 174 filter component 150 is provided with an air intake channel 152; the shell 160 is connected to the air intake grille 140; the fan assembly 170 includes a volute 172 and an impeller 174, the volute 172 is arranged in the shell 160, and is connected to the air intake channel 152; the impeller 174 is located in the volute 172; the air outlet grille 110 is connected to the shell 160, and is located on the side of the volute 172 away from the air intake channel 152.

[0144] In this embodiment, the shell 160 also includes an air intake grille 140, which can be located at the front end of the purifier 100. The air intake grille 140 has an air inlet 142, which is the entrance of the air. The main function of the air intake grille 140 is to guide air into the interior of the purifier 100, while preventing larger particles or foreign matter from directly entering, so as to avoid damage to the internal components of the purifier 100.

[0145] Specifically, the air intake grille 140 may be a square grille, which is composed of a series of equal squares.

[0146] Specifically, the air intake grille 140 may also be a grid grille, which is composed of a plurality of grid units.

[0147] The air intake grille 140 may also be a honeycomb grille, the shape of which is similar to the hexagonal structure of a honeycomb, in which each hexagon is closely connected, has high structural strength and stability, and can provide good ventilation performance.

[0148] The air intake grille 140 may also be a circular grille, which is composed of a series of equal circles and has a rounded and soft appearance.

[0149] The filter component 150 is disposed in the air intake grille 140, includes a filter medium such as a filter screen, and is provided with an air intake passage 152. The filter component 150 is a core component of the purifier 100, and its main function is to filter out pollutants such as dust, pollen, bacteria, and viruses in the air through a filter screen and other media to preliminarily purify the air.

[0150] Specifically, the filter component 150 is detachably disposed in the air intake grille 140 .

[0151] Specifically, on the one hand, the purifier 100 also includes a mounting part, which includes a bolt. Threaded holes are opened on the air intake grille 140 and the filter component 150. By inserting the bolts into the threaded holes on the air intake grille 140 and the filter component 150 and tightening them, the filter component 150 can be set in the air intake grille 140.

[0152] On the other hand, a first clamping portion is provided on the filter component 150 , and a second clamping portion is provided on the air intake grille 140 . The filter component 150 can be arranged in the air intake grille 140 by clamping the first clamping portion onto the second clamping portion.

[0153] Specifically, one of the first clamping portion and the second clamping portion is a concave portion, and the other is a convex portion.

[0154] The housing 160 is the external structure of the purifier 100 and is connected to the air intake grille 140 to form a closed space, which contains the filter component 150, the volute 172, the impeller 174 and other components.

[0155] The housing 160 not only protects the internal components, but also prevents the filtered air from leaking inside the purifier 100, thereby ensuring the purification effect.

[0156] Specifically, the housing 160 may be an engineering plastic housing, which has the characteristics of being light, easy to process and having a low cost.

[0157] The housing 160 may also be a full metal shell, which has higher strength and durability.

[0158] The fan assembly 170 includes a volute 172 and an impeller 174. The volute 172 is disposed in the housing 160 and communicates with the air inlet passage 152. The impeller 174 is located in the volute 172. The volute 172 and the impeller 174 together constitute the fan system of the purifier 100. When the motor drives the impeller 174 to rotate, air is sucked into the volute 172, filtered by the filter component 150, and then discharged from the air outlet of the volute 172, ensuring that the air is fully circulated and filtered inside the purifier 100.

[0159] The air outlet grille 110 is connected to the housing 160 and is located on a side of the housing 160 away from the air inlet channel 152. The air outlet grille 110 is the outlet of the purified air. Through the air outlet grille 110, the user can feel the fresh air processed by the purifier 100. The design of the air outlet grille 110 can adjust the direction and angle of the air outlet to meet the needs of different users.

[0160] like Figure 8 , Fig. 9 and Fig.10 As shown, in some embodiments of the present invention, optionally, the purifier 100 also includes a bracket 190 and a driving component 192, the bracket 190 is located in the volute 172, and has an air outlet channel 191 between the bracket 190 and the inner wall of the volute 172; the mounting end 193 of the driving component 192 is connected to the bracket 190, and the driving end 195 of the driving component 192 is connected to the impeller 174, and can drive the impeller 174 to rotate.

[0161] In this embodiment, the purifier 100 further includes a bracket 190 and a driving component 192 , which work together to ensure high efficiency and stability of air purification.

[0162] The bracket 190 is located in the volute 172 , and has an air outlet passage 191 between the bracket 190 and the inner wall of the volute 172 . The air outlet passage 191 allows the purified air to flow out smoothly. At the same time, the stability of the internal structure of the volute 172 can be maintained by the bracket 190 .

[0163] The air outlet channel 191 is constructed by the bracket 190 , thereby ensuring smooth air flow, avoiding unsmooth air flow or dead corners caused by structural obstruction, optimizing the efficiency of air purification, and improving the performance of the purifier 100 .

[0164] The mounting end 193 of the driving component 192 is connected to the bracket 190 , and the driving component 192 is used to transmit power to the impeller 174 .

[0165] The driving end 195 of the driving component 192 is directly connected to the impeller 174 or connected through a transmission mechanism to drive the impeller 174 to rotate.

[0166] By driving the component 192, the air flow rate can be precisely adjusted to meet the air purification needs in different scenarios.

[0167] Specifically, on one hand, the bracket 190 is detachably connected to the interior of the volute 172 , so as to facilitate adjustment of the air outlet passage 191 .

[0168] On the other hand, the bracket 190 and the volute 172 are an integrated structure, which improves the structural strength of the air outlet passage 191 .

[0169] like Figure 8 , Fig. 9 and Fig.10 As shown, in some embodiments of the present invention, optionally, the purifier 100 further includes: a guide vane 194 , wherein there are a plurality of guide vanes 194 , and the plurality of guide vanes 194 are located in the air outlet channel 191 and connected to the bracket 190 .

[0170] In this embodiment, the purifier 100 also includes a guide vane 194, which is mainly used to guide and control the flow of the airflow, slow down, pressurize and rectify the high-speed airflow thrown out by the impeller 174, ensure that the airflow can pass through the air outlet channel 191 evenly, and improve the overall performance of the purifier 100.

[0171] There are multiple guide vanes 194 in the purifier 100. The multiple guide vanes 194 are located in the air outlet channel 191 and connected to the bracket 190, which can improve the stability and reliability of the guide vanes 194 during operation.

[0172] like Figure 8 , Fig. 9 and Fig.10 As shown, in some embodiments of the present invention, optionally, the purifier 100 also includes a collector 196 and a mesh cover 198 . The collector 196 is connected to the volute 172 and is located on a side of the impeller 174 close to the air inlet channel 152 . The mesh cover 198 is disposed on the collector 196 .

[0173] In this embodiment, the purifier 100 includes a collector 196, which is connected to the volute 172 and is located on a side of the impeller 174 close to the air inlet channel 152. The collector 196 can effectively guide and collect the air flow so that it can enter the interior of the purifier 100 more smoothly and more concentratedly. The collector 196 helps to improve the overall performance of the purifier 100 and ensure that the air can efficiently pass through the purifier 100 and be fully filtered and purified.

[0174] The mesh cover 198 is arranged on the collector 196. The mesh cover 198 is mainly used to protect the collector 196, and prevent large particles of dust or debris from entering the collector 196, thereby preventing damage or reducing the purification effect. At the same time, the mesh cover 198 can also play a certain filtering role, and can initially filter out some larger particles of pollutants in the air, providing more favorable conditions for the subsequent purification process.

[0175] In some embodiments of the present invention, the purifier 100 includes an air intake grille 140, a filter component 150 (specifically, the filter component 150 is a filter element), a mesh cover 198, a collector 196, a volute 172, an impeller 174, a driving component 192 (specifically, the driving component 192 is a motor), a bracket 190, a guide vane 194, an air outlet grille 110 and a shell 160, etc.

[0176] The working principle of the purifier 100 is that the air to be purified enters through the air inlet grille 140, is purified by the filter element, then passes through the mesh cover 198, the collector 196, the volute 172, the impeller 174, the guide vane 194, and finally is discharged through the rear air outlet grille 110, and the cycle is repeated to achieve the purpose of purifying the air.

[0177] The motor mainly provides driving force for the impeller 174 to rotate. The impeller 174 rotates, resulting in a high negative pressure area near the impeller 174. In this way, a pressure difference is formed between the air intake grille 140 and the impeller 174, so that air can be sucked in for purification.

[0178] Through simulation analysis and noise diagnosis of the air outlet grille of the purifier, it is found that the air outlet grille is an important component that affects the aerodynamic noise and flow of the whole machine. If the air outlet grille is not designed properly, it will cause great resistance in this part, resulting in uneven air outlet speed, so that in local areas, the impact of the airflow on the air outlet grille is very large, causing huge impact noise.

[0179] The linear radial air outlet grille will cause the gap between the grilles to gradually decrease from the outside to the inside. The gap between the two outermost grilles is 8mm, and the gap between the innermost grille is only 3mm. This will make the resistance of the air outlet grille very large. In addition, due to the different gaps, the resistance of the outer circle is small, and the resistance of the inner circle is large, which makes the speed of the outer circle high and the speed of the inner circle low. The speed is very uneven. The simulation effect is as follows: Fig.11 shown.

[0180] In order to reduce the resistance of the air outlet grille 110, and also to reduce the problems of high noise and low air volume caused by the impact of airflow on the air outlet grille 110, the air outlet grille 110 is redesigned and optimized, and an arc-shaped semi-teardrop-shaped air outlet mesh cover 198 is designed.

[0181] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the rear mesh grille of the air purifier 100 adopts a single arc, mainly because the airflow coming out of the impeller 174 is a rotating airflow. The main purpose of the purifier 100 is to purify the air, and the air volume is pursued, rather than the wind speed that blows farther. This is very different from a floor fan and an air conditioner, because the design of its air outlet grille 110 needs to follow the rotating direction of the airflow, so as to reduce the resistance and impact of the airflow. Therefore, the air outlet grille 110 adopts an arc grille. At the same time, in order to reduce the impact of the airflow on the air outlet grille 110 and generate a large impact noise, the cross-sectional shape of the air outlet grille 110 is also bionic designed, and a water drop-shaped air outlet portion 118 is adopted, so that the impact of the airflow on the air outlet grille 110 can be minimized, thereby further reducing the aerodynamic impact noise. Its dimensions are as follows:

[0182] The frame 112 of the air outlet grille 110 has a height W0 of 46 mm.

[0183] The side length L0 of the air outlet grille 110 , that is, the length of the outer edge 114 of the frame 112 , may be 229 mm.

[0184] The radius R0 of the inner edge 124 of the air outlet portion 118 , ie, the radius of the arc with the center of the arc B at point M, is in the range of R0 / L0 from 0.35 to 0.46, specifically, R0 / L0=0.42.

[0185] The height H1 of the support portion 126, ie, the shape of the cross section of the air outlet grille 110, is a bionic teardrop-shaped end face. The height H1 of the support portion 126 is the middle height, and the range of H1 / W0 is 0.09-0.16, specifically, H1 / W0=0.13.

[0186] The radius R1 of the first air guide portion 128 , ie, the radius of the air inlet end, R1 / W0 is in the range of 0.08 to 0.13, specifically R1 / W0=0.11.

[0187] The radius R2 of the second air guiding portion 130 , ie, the radius of the air outlet end, R2 / W0 is in the range of 0.17 to 0.22, specifically R2 / W0=0.18.

[0188] According to the above parameters, the shape and cross-sectional dimensions of the air outlet grille are designed to reduce the resistance of the air outlet grille and the impact of the airflow on the air outlet grille as much as possible, thereby increasing the flow rate of the purifier 100 and reducing the noise of the whole machine. The simulation results are as follows: Figure 4 ( Figure 4Velocity in stn Frame W Contour 1 represents the distribution of velocity in the stationary coordinate system, the first velocity contour, and Velocity in stn Frame W Contour 9 represents the distribution of velocity in the stationary coordinate system, the ninth velocity contour). It can be seen that the simulation of the straight radial air outlet grille is Fig.10 ( Fig.11 Velocity in stn Frame W Contour 1 represents the velocity distribution in the stationary coordinate system, the first velocity contour line, and Velocity in stn Frame W Contour 9 represents the velocity distribution in the stationary coordinate system, the ninth velocity contour line) is less turbulent than other flow systems.

[0189] 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.

[0190] 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.

[0191] 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: The purifier comprises: A housing having an air inlet and an air outlet; An air outlet grille, the air outlet grille being arranged at the air outlet; A filter component, wherein the filter component is arranged at the air inlet; A fan assembly, the fan assembly is arranged in the housing, the fan assembly can drive the gas to enter the housing through the air inlet, flow through the filter component and the air outlet grille, and then flow out of the housing through the air outlet; The air outlet grille comprises a frame, a mounting portion and an air outlet portion; The mounting portion is disposed in the frame; The number of the air outlet parts is multiple, and the multiple air outlet parts are arranged along the inner circumference of the frame, the first end of the air outlet part is connected to the mounting part, and the second end of the air outlet part is connected to the frame; Wherein, in the axial direction of the fan assembly, the width of the air outlet portion increases from a side of the air outlet portion close to the inside of the shell to a side of the air outlet portion close to the outside of the shell.

2. The purifier according to claim 1, characterized in that: An airflow channel is provided between two adjacent air outlets among the plurality of air outlets, and the airflow channel comprises a first acceleration section and a second acceleration section, wherein the first acceleration section is closer to the fan assembly than the second acceleration section.

3. The purifier according to claim 1, characterized in that: In the radial direction of the fan assembly, the first end of the air outlet portion extends to the second end of the air outlet portion in an arc shape.

4. The purifier according to claim 3, characterized in that: A ratio of a radius of an inner edge of the air outlet portion to a length of an outer edge of the frame is greater than or equal to 0.35 and less than or equal to 0.

46.

5. The purifier according to claim 1, characterized in that: The gas outlet portion comprises: Supporting part; The first air guide portion is arranged on a side of the support portion close to the inside of the shell, and a surface of the first air guide portion on a side away from the support portion extends in an arc shape.

6. The purifier according to claim 5, characterized in that: The gas outlet portion further comprises: The second air guide portion is arranged on a side of the support portion close to the outside of the shell, and a surface of the second air guide portion on a side away from the support portion extends in an arc shape.

7. The purifier according to claim 6, characterized in that: The width of the first air guiding portion is smaller than the width of the second air guiding portion.

8. The purifier according to claim 5, characterized in that: A ratio of a height of the support portion to a height of the frame is greater than or equal to 0.09 and less than or equal to 0.

16.

9. The purifier according to claim 5, characterized in that: A ratio of a radius of a surface of the first air guide portion on a side away from the support portion to a height of the frame is greater than or equal to 0.08 and less than or equal to 0.

13.

10. The purifier according to claim 6, characterized in that: A ratio of a radius of a surface of the second air guide portion on a side away from the support portion to a height of the frame is greater than or equal to 0.17 and less than or equal to 0.

22.

11. The purifier according to any one of claims 1 to 10, characterized in that: The plurality of gas outlets are arranged in a deflected manner along a rotation direction of the gas in the housing.

12. The purifier according to claim 10, characterized in that: The housing comprises an air intake grille, and the air intake grille has the air intake port; The filter component is provided with an air intake passage; The fan assembly includes a volute and an impeller; The volute is disposed in the housing and communicates with the air inlet passage; The impeller is located in the volute; The air outlet grille is connected to the shell and is located at a side of the volute away from the air inlet passage.

13. The purifier according to claim 12, 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.

14. The purifier according to claim 13, characterized in that: Also includes: Guide vanes, the guide vanes are multiple, and the multiple guide vanes are located in the air outlet channel and connected to the bracket.

15. The purifier according to claim 12, characterized in that: Also includes: A collector, the collector is connected to the volute and is located on a side of the impeller close to the air inlet passage; A mesh cover is arranged on the current collector.

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