Single-wind-wheel multi-direction air outlet air purifier
By incorporating a gradually expanding air duct and a coaxially arranged impeller structure into the air purifier, the problems of high wind resistance and low air output efficiency in single-impeller multi-directional air output are solved, achieving a highly efficient and quiet multi-directional air output effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-04-03
AI Technical Summary
Existing air purifiers suffer from high wind resistance and low air output efficiency when achieving multi-directional airflow from a single impeller.
The air purifier is equipped with at least two layers of gradually expanding air ducts, each with an air outlet. The impellers are evenly arranged along the axial direction, and the air outlets are arranged at equal intervals. The air duct baffle is provided with circular through holes. The air inlet is coaxial with the air duct baffle, and the volute is directly connected to the air duct to reduce the airflow path.
It achieves multi-directional airflow from a single impeller, reduces wind resistance, increases airflow volume and gentleness, and creates a quiet and comfortable user environment.
Smart Images

Figure CN224080373U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purification technology, and in particular to an air purifier with a single impeller and multi-directional air outlet. Background Technology
[0002] In the prior art, the main solutions adopted to achieve multi-directional airflow (i.e., two or more air outlets) in air purifiers are: (1) setting two or more impellers, each impeller being equipped with a duct and an air outlet; (2) setting one impeller and one duct, with multiple branch pipes on the duct to provide more air outlets. However, solution (1) leads to an increase in the number of impellers and corresponding motors in the air purifier, increasing manufacturing and operating costs, and resulting in higher operating noise; while solution (2) achieves multi-directional airflow from a single impeller, but the wind resistance is significantly increased by setting multiple branch pipes, resulting in a smaller actual airflow volume at each air outlet. In view of the above technical problems, this application proposes a new technical solution that not only achieves multi-directional airflow in a single-impeller air purifier, but also has lower wind resistance and better airflow efficiency at each air outlet. Utility Model Content
[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an air purifier with a single impeller and multi-directional air outlet, which aims to solve the technical problem that the existing air purifiers cannot achieve multi-directional air outlet with a single impeller and low wind resistance.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] An air purifier with a single impeller and multi-directional air outlet includes a purifier housing, a filter, a filter partition, a volute, and an impeller disposed in the volute. The volute is disposed on the filter partition, and the filter partition has an air inlet corresponding to the volute. The volute has at least two layers of air ducts along its axial direction. Each layer of air duct has an air outlet. The directions of the air outlets are different.
[0006] Furthermore, in the single-fan multi-directional air purifier, each air duct has a gradually expanding structure, and the cross-section of each air duct gradually increases along the direction of airflow.
[0007] Furthermore, in the single-fan multi-directional air purifier, each air outlet is arranged at the same interval in the circumferential direction.
[0008] Furthermore, in the single-fan multi-directional air purifier, an air duct partition is provided between any two adjacent air duct layers, and each air duct partition is provided with a circular through hole, through which the fan passes.
[0009] Furthermore, in the single-fan multi-directional air purifier, the air inlet on the filter partition and the circular through holes of each air duct partition are coaxially arranged.
[0010] Furthermore, in the single-fan multi-directional air purifier, the fan is evenly arranged along its axial direction in each layer of air duct.
[0011] Furthermore, in the aforementioned single-fan multi-directional air purifier, a grille is provided at the air inlet.
[0012] Furthermore, in the single-fan multi-directional air purifier, the purifier housing includes a top plate, a bottom plate, a front plate, a back plate, and two side plates, wherein the front plate is a perforated plate.
[0013] Furthermore, in the single-fan multi-directional air purifier, a base is provided at the bottom of the purifier housing.
[0014] Beneficial effects: This utility model provides an air purifier with a single impeller and multi-directional air outlet, which has at least the following technical advantages compared with the prior art:
[0015] (1) High-efficiency air outlet: At least two layers of air ducts and air outlets in different directions are set in a volute. The airflow is evenly distributed to each layer of air ducts and then discharged after being discharged, so as to realize multi-directional air outlet of a single impeller.
[0016] (2) Reduced resistance: The air outlet of the duct is directly connected to the volute, and the airflow path from the impeller to the air outlet is short, which effectively reduces the resistance when the airflow is discharged. This allows each air outlet to maintain a good air volume under the same power, thus improving the air purification efficiency.
[0017] (3) Gentle airflow with wide coverage: Each air duct adopts a gradually expanding structure, with the cross-section gradually increasing along the airflow direction. On the one hand, it increases the cross-section of the air outlet, making the airflow cover a wider area after it is blown out; on the other hand, it slows down the airflow speed, allowing users to feel a gentler wind, while avoiding sudden changes in airflow speed that could generate noise, creating a quiet and comfortable user environment. Attached Figure Description
[0018] Figure 1 This is a 3D diagram of an air purifier with a single impeller and multi-directional airflow. The front panel and filter are not shown in the diagram.
[0019] Figure 2 This is a three-dimensional sectional view of an air purifier with a single impeller and multi-directional airflow.
[0020] Figure 3 This is a three-dimensional view of the filter baffle, volute, and impeller.
[0021] Figure 4 This is a three-dimensional view of the filter baffle and volute.
[0022] Figure 5 This is a three-dimensional sectional view of the first-layer air duct.
[0023] Numbering on the map:
[0024] 1. Air purifier housing; 11. Top panel; 12. Bottom panel; 13. Front panel; 14. Back panel; 15. Side panel;
[0025] 2. Filter;
[0026] 3. Filter baffle; 30. Air inlet;
[0027] 4. Volute; 401. First-layer air duct; 4010. Air outlet of the first-layer air duct; 402. Second-layer air duct; 4020. Air outlet of the second-layer air duct; 49. Air duct partition; 490. Circular through hole of the air duct partition;
[0028] 5. Wind turbine. Detailed Implementation
[0029] This utility model provides an air purifier with a single impeller and multi-directional air outlet. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following provides a more detailed description of this utility model. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0030] Please see Figures 1 to 5 This utility model provides an air purifier with a single impeller and multi-directional air outlet. The accompanying drawings are for illustrative purposes only and are not proportional to an actual product. The drawings only show structures relevant to the invention; some conventional structures are not specifically depicted. The drawings only show two layers of air ducts to illustrate the structural principle of multi-layer air ducts; in practical applications, more layers of air ducts can be incorporated. The first layer of air duct is shown for easier observation. Figure 5 A three-dimensional sectional view of the first-layer air duct has been drawn, with the section parallel to the filter baffle (i.e.: Figure 5 The entire height of the first-layer air duct is not shown in the image. This is to facilitate observation of the filter baffles. Figure 1 The front panel and filter are not shown in the drawing.
[0031] An air purifier with a single impeller and multi-directional air outlet includes a purifier housing 1, a filter 2, a filter partition 3, a volute 4, and an impeller 5 disposed within the volute. The volute is disposed on the filter partition, and the filter partition has an air inlet 30 corresponding to the volute. The volute has at least two layers of air ducts along its axial direction. Each layer of air duct has one air outlet, and the directions of the air outlets are different. The figure only schematically shows the first layer air duct 401, the first layer air duct outlet 4010, the second layer air duct 402, and the second layer air duct outlet 4020.
[0032] Please see Figure 3 and Figure 5 Furthermore, each air duct has a gradually expanding structure, and the cross-section of each duct gradually increases along the airflow direction. This design ensures that the air outlet has a sufficiently large cross-section, allowing the airflow to cover a wider area. In addition, because the air duct has a gradually expanding structure, the airflow velocity gradually decreases within the duct, resulting in a gentler feel for the user when the air is finally blown out of the outlet; the smooth change in airflow velocity avoids significant noise caused by sudden changes in velocity, creating a quieter user environment. Figure 3 and Figure 5 Arrows are used to indicate the direction of airflow.
[0033] Furthermore, the air outlets are arranged at equal intervals in the circumferential direction. This arrangement helps to distribute airflow more evenly to each area, ensuring a relatively stable airflow throughout and improving performance. As shown in the attached diagram, when only two layers of air ducts are installed, the two air outlets are 180° apart.
[0034] Furthermore, a duct partition (only one partition 49 is shown in the figure) is installed between any two adjacent duct layers, and each partition has a circular through-hole (only one circular through-hole 490 is shown in the figure), through which the impeller passes. This arrangement allows the impeller to effectively deliver the intake airflow into each duct layer. Figure 4 From the perspective of the first layer of air duct, the first layer of air duct is located below the air duct partition 49, and the second layer of air duct is located above the air duct partition.
[0035] Furthermore, the air inlet on the filter baffle and the circular through holes of each air duct baffle are coaxially arranged. This arrangement ensures that the airflow can smoothly enter the impeller through the air inlet.
[0036] Furthermore, the impellers are evenly distributed along their axial direction in each layer of the air duct. This arrangement ensures that the airflow within the impellers is distributed as evenly as possible into each side of the air duct, resulting in approximately equal airflow at each outlet. For example... Figure 2 As mentioned above, when only two layers of air ducts are set, half of the wind turbine is located in the first layer of air duct along its axial direction, and the other half is located in the second layer of air duct.
[0037] like Figure 1 As shown, a grille is further provided at the air inlet 30. By setting the grille, large particles and other debris can be blocked from entering the air purifier, avoiding damage to the internal structure of the air purifier. At the same time, it can also initially guide the airflow, so that it enters the impeller evenly.
[0038] like Figure 1 and Figure 2As shown, the purifier housing 1 is generally rectangular, including a top plate 11, a bottom plate 12, a front plate 13, a back plate 14, and two side plates 15. The front plate 13 is a perforated plate. This perforated plate actually functions as an air inlet plate, allowing outside air to enter the purifier housing through the small holes on the plate and be filtered. The filtered airflow then enters the impeller through the air inlet on the filter partition. The air outlets of the two air ducts correspond to the side plates on the same side, and each side plate is equipped with a grille to ensure that the airflow can be blown out smoothly.
[0039] Furthermore, a base (not shown in the figure) is provided at the bottom of the purifier housing. This base facilitates the placement of the air purifier.
[0040] As the above analysis shows, unlike existing technologies, this application uses at least two layers of air ducts within a single casing, each with its own air outlet. The impeller is housed within the casing; its rotation directs the intake airflow into each layer of air ducts, which then exhausts the air through their respective outlets. This achieves the goal of a single impeller with multi-directional airflow in the air purifier. Because the air outlets are directly connected to the casing, the distance the airflow travels from the impeller to the outlet is short, resulting in less resistance during exhaust.
[0041] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.
Claims
1. An air purifier with a single impeller and multi-directional air outlet, comprising a purifier housing, a filter, a filter partition, a volute, and an impeller disposed within the volute, characterized in that: The volute is mounted on the filter baffle, and the filter baffle has an air inlet corresponding to the volute. The volute has at least two layers of air ducts along its axial direction. Each layer of air duct has an air outlet. The directions of the air outlets are different.
2. The air purifier with a single impeller and multi-directional air outlet according to claim 1, characterized in that: Each air duct has a gradually expanding structure, and the cross-section of each air duct gradually increases along the direction of airflow.
3. The air purifier with a single impeller and multi-directional air outlet according to claim 1 or 2, characterized in that: Each air outlet is arranged at the same interval in the circumferential direction.
4. The air purifier with a single impeller and multi-directional air outlet according to claim 1, characterized in that: A partition is provided between any two adjacent air ducts, and each partition has a circular through hole through which the impeller passes.
5. The air purifier with a single impeller and multi-directional air outlet according to claim 4, characterized in that: The air inlet on the filter baffle and the circular through holes on each air duct baffle are coaxially arranged.
6. The air purifier with a single impeller and multi-directional air outlet according to claim 4, characterized in that: The wind turbines are evenly distributed along their axial direction in each layer of the air duct.
7. The air purifier with a single impeller and multi-directional air outlet according to claim 1, characterized in that: A grille is installed at the air inlet.
8. The air purifier with a single impeller and multi-directional air outlet according to claim 1, characterized in that: The purifier housing includes a top plate, a bottom plate, a front plate, a back plate, and two side plates, the front plate being a perforated plate.
9. The air purifier with a single impeller and multi-directional air outlet according to claim 1, characterized in that: The bottom of the purifier housing is provided with a base.