Double-fan-blade air purifier
By using a dual-blade air purifier design, which utilizes a single motor to drive the upper and lower blades to rotate synchronously and the arc-shaped structure of the silent blades, the problem of low air pressure and high noise in traditional air purifiers is solved. This achieves increased air volume and air pressure while reducing noise, and the structure is compact and portable.
Patent Information
- Application Number
- CN202520170096.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Traditional axial flow fan air purifiers have low air pressure and poor wind resistance. Using two independent axial flow fans will increase noise and is not very practical.
It adopts a dual-blade structure, with the lower and upper blades rotating synchronously driven by a single motor. Combined with the strip-shaped arc design of the silent blades, it avoids wind interference, increases air volume and air pressure, and reduces noise.
Without increasing noise, air volume is increased by 50%-65%, air pressure is increased, noise remains unchanged, the structure is compact and portable, and the performance is improved.
Smart Images
Figure CN223707970U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purifier technology, specifically a dual-blade air purifier. Background Technology
[0002] An air purifier is a device that can adsorb, decompose, or transform various air pollutants, primarily to improve indoor air cleanliness. It effectively removes pollutants such as dust, pollen, odors, bacteria, allergens, and formaldehyde, thereby improving indoor air quality.
[0003] Air purifiers, also known as "air cleaners" or "air fresheners," primarily improve air cleanliness by adsorbing, decomposing, or transforming various air pollutants. They effectively remove PM2.5, dust, pollen, odors, formaldehyde and other pollutants from renovations, and even harmful substances such as bacteria and viruses. Air purifiers typically consist of a casing, filter section, air duct design, motor, power supply, and LCD display. The filter section determines the purification efficiency, while the motor determines its lifespan.
[0004] Air purifiers come in various types, including those using axial fans. However, most traditional axial fan air purifiers have only one axial fan blade, resulting in low air pressure and poor wind resistance during actual use. When a filter is installed, the airflow decreases drastically, affecting normal performance. On the other hand, using two independent axial fans can cause mutual interference and increase noise, making them impractical. Therefore, this invention proposes a dual-blade air purifier. Utility Model Content
[0005] The purpose of this invention is to provide a dual-blade air purifier to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-blade air purifier, comprising a housing, a lower blade frame fixedly installed inside the housing, a lower blade disposed within the lower blade frame, a silent blade frame fixedly installed above the lower blade frame, a silent blade disposed within the silent blade frame, the silent blade adopting a strip-shaped arc structure design, an upper blade frame fixedly installed above the silent blade frame, an upper blade disposed within the upper blade frame, and a connecting shaft passing through the lower blade, the silent blade, and the upper blade, the connecting shaft being fixedly connected to the lower blade, the silent blade, and the upper blade respectively.
[0007] Preferably, the bottom of the outer casing is provided with a lower base, and an air inlet groove is provided around the outer surface of the lower base.
[0008] Preferably, an air outlet mesh cover is fixedly installed on the top outer surface of the outer casing.
[0009] Preferably, a filter screen is fixedly installed below the lower frame of the fan blade and inside the outer casing.
[0010] Preferably, a display screen is fixedly mounted on the outer surface of the housing, and the display screen is a color touch screen.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This invention uses a single motor to simultaneously drive both the lower and upper fan blades for axial flow rotation. Compared to two independently driven axial fans, this single rotating shaft effectively reduces the number of motors required and lowers motor noise. Without increasing noise, the dual-blade design effectively increases the airflow and air pressure of the air purifier. At the same rotation speed, it can increase the airflow by 50%-65% compared to traditional single-blade air purifiers, while maintaining the same noise level, thus effectively improving performance.
[0013] Meanwhile, this utility model features a silent fan blade with a strip-shaped arc structure design. When the upper and lower fan blades rotate, the silent fan blade rotates synchronously. When the silent fan blade rotates, its strip-shaped arc structure can improve the airflow direction and avoid mutual interference between the airflow patterns of the upper and lower fan blades. It can effectively reduce noise while increasing air pressure, resulting in good practical performance. Furthermore, the air purifier of this utility model is compact and easy to carry. It can be placed directly on a table for use, making it more convenient to use. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the air purifier housing structure according to an embodiment of the present utility model;
[0015] Figure 2 This is a schematic diagram of the inner fan frame structure according to an embodiment of the present utility model;
[0016] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the air purifier according to an embodiment of the present utility model;
[0017] Figure 4 This is a schematic diagram of the silent fan blade structure according to an embodiment of the present utility model.
[0018] In the diagram: 1. Outer casing; 2. Air outlet grille; 3. Lower fan blade frame; 4. Silent blade frame; 5. Upper fan blade frame; 6. Lower fan blade; 7. Silent fan blade; 8. Upper fan blade; 9. Connecting shaft; 10. Filter screen; 11. Display screen. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] Please see Figure 1-4 An embodiment of this utility model is provided: a dual-blade air purifier, including an outer shell 1, a lower blade frame 3 fixedly installed inside the outer shell 1, a lower blade 6 disposed inside the lower blade frame 3, a silent blade frame 4 fixedly installed above the lower blade frame 3, a silent blade 7 disposed inside the silent blade frame 4, the silent blade 7 adopts a strip-shaped arc structure design, an upper blade frame 5 fixedly installed above the silent blade frame 4, an upper blade 8 disposed inside the upper blade frame 5, and a connecting shaft 9 is provided through the lower blade 6, the silent blade 7 and the upper blade 8, respectively. The connecting shaft 9 is fixedly connected to the lower blade 6, the silent blade 7 and the upper blade 8 respectively.
[0023] In practical use, the bottom end of the connecting shaft 9 can be connected to the output shaft of the motor. Thus, a single motor can simultaneously drive the lower fan blade 6, the silent fan blade 7, and the upper fan blade 8 to rotate synchronously through the connecting shaft 9. This utility model can drive the lower fan blade 6 and the upper fan blade 8 to rotate in a double-blade axial flow with a single motor. Compared with two independently driven axial flow fans, it can effectively reduce the number of motors used, thereby reducing the noise generated by the motor. Without increasing the noise, the double-blade structure design can effectively increase the air volume and air pressure of the air purifier. At the same speed, it can increase the air volume by 50%-65% compared with the traditional single-blade air purifier, while maintaining the same noise level, effectively improving the performance.
[0024] Meanwhile, this utility model is equipped with a silent fan blade 7, which adopts a strip-shaped arc structure design. When the upper and lower fan blades rotate, the silent fan blade 7 can rotate synchronously. When the silent fan blade 7 rotates, its strip-shaped arc structure can improve the airflow direction and avoid mutual interference between the airflow patterns of the upper and lower fan blades. While increasing wind pressure, it can effectively reduce noise and has a good practical effect.
[0025] In this embodiment, in order to ensure the normal air intake and exhaust operation of the air purifier of this utility model, a lower base is provided at the bottom of the outer shell 1, and an air intake groove is provided around the outer surface of the lower base.
[0026] An air outlet mesh cover 2 is fixedly installed on the top outer surface of the outer casing 1.
[0027] In this embodiment, in order to ensure the air filtration effect of the air purifier, a filter screen 10 is fixedly installed below the fan blade lower frame 3 and inside the outer casing 1. The filter screen 10 can effectively filter the intake and exhaust air, thereby improving the air filtration and purification quality.
[0028] In this embodiment, in order to facilitate the operation of functions, a display screen 11 is fixedly installed on the outer surface of the outer shell 1. The display screen 11 is a color touch screen.
[0029] Working principle: The air purifier of this invention can be used in accordance with conventional methods. The filter 10 of this invention can effectively filter the intake and exhaust air, thereby improving the air filtration and purification quality.
[0030] In practical use, the bottom end of the connecting shaft 9 can be connected to the output shaft of the motor. Thus, a single motor can simultaneously drive the lower fan blade 6, the silent fan blade 7, and the upper fan blade 8 to rotate synchronously through the connecting shaft 9. This utility model can drive the lower fan blade 6 and the upper fan blade 8 to rotate in a double-blade axial flow with a single motor. Compared with two independently driven axial flow fans, it can effectively reduce the number of motors used, thereby reducing the noise generated by the motor. Without increasing the noise, the double-blade structure design can effectively increase the air volume and air pressure of the air purifier. At the same speed, it can increase the air volume by 50%-65% compared with the traditional single-blade air purifier, while keeping the noise level unchanged, effectively improving the performance.
[0031] Meanwhile, this utility model features a silent fan blade 7 with a strip-shaped arc structure design. When the upper and lower fan blades rotate, the silent fan blade 7 can rotate synchronously. When the silent fan blade 7 rotates, its strip-shaped arc structure can improve the airflow direction and avoid mutual interference between the airflow patterns of the upper and lower fan blades. It can effectively reduce noise while increasing wind pressure, resulting in good practical performance. Furthermore, the air purifier of this utility model is compact and portable, and can be placed directly on a table for use, making it more convenient to use.
[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A dual-blade air purifier, comprising a housing (1), characterized in that, The lower fan frame (3) is fixedly installed inside the outer shell (1). The lower fan frame (3) is provided with a lower fan blade (6). The upper part of the lower fan frame (3) is fixedly installed with a stationary fan frame (4). The stationary fan frame (4) is provided with a silent fan blade (7). The silent fan blade (7) adopts a strip-shaped arc structure design. The upper part of the stationary fan frame (4) is fixedly installed with a fan frame (5). The upper part of the fan frame (5) is provided with an upper fan blade (8). A connecting shaft (9) is provided between the lower fan blade (6), the silent fan blade (7) and the upper fan blade (8). The connecting shaft (9) is fixedly connected to the lower fan blade (6), the silent fan blade (7) and the upper fan blade (8) respectively.
2. The dual-blade air purifier according to claim 1, characterized in that: The bottom of the outer shell (1) is provided with a lower base, and an air inlet groove is provided around the outer surface of the lower base.
3. The dual-blade air purifier according to claim 1, characterized in that: An air outlet mesh cover (2) is fixedly installed on the top outer surface of the outer shell (1).
4. The dual-blade air purifier according to claim 1, characterized in that: A filter screen (10) is fixedly installed below the fan blade lower frame (3) and inside the outer casing (1).
5. A dual-blade air purifier according to claim 1, characterized in that: A display screen (11) is fixedly installed on the outer surface of the outer casing (1), and the display screen (11) is a color touch screen.