Wind wheel for range hood
By designing arc-shaped impeller blades to optimize the airflow path, the problem of low air intake efficiency of traditional range hood impellers has been solved, achieving more efficient smoke removal and impeller stability, and adapting to various range hood models.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional range hoods have impellers of equal width, which results in poor air intake efficiency, affects the exhaust performance of the range hood, and fails to guarantee the cleanliness of the kitchen environment.
Design an impeller blade whose width gradually increases or decreases from the front end to the rear end, forming an arc-shaped distribution, to optimize the airflow path, increase the air inlet area, and improve the air pressure difference.
It improves the smoke extraction efficiency of range hoods, enhances the stability of airflow, extends the service life of impellers, and adapts to various range hood models and environmental requirements.
Smart Images
Figure CN224049415U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of range hood accessories, specifically a kind of wind wheel for range hood. BACKGROUND
[0002] In modern kitchen, range hood is a kind of kitchen appliance for purifying kitchen environment, which can quickly remove the oil fume generated during cooking and discharge outdoor, to achieve the purpose of purifying kitchen environment. As the internal core component fan of range hood, it includes volute, motor and impeller, utilizes motor to drive connection impeller, makes pressure difference inside and outside volute by impeller spacing, so that air is discharged through the air port. The traditional impeller is designed as equal width, and its air inlet efficiency is not ideal. When the fan starts to work, the equal-width impeller blade cannot efficiently guide air to flow through the pressure difference, resulting in slow air inlet and outlet speed, thereby reducing the oil fume effect of range hood, and cannot guarantee the cleanliness of kitchen environment, which is prone to oil fume retention, further affecting the air quality and cleanliness of kitchen. SUMMARY
[0003] The utility model aims at overcoming the shortcomings of prior art, providing a kind of wind wheel for range hood, which has simple structure, low manufacturing cost, variable width design of impeller blade, adapts to various environmental requirements and range hood use, is practical, stable in structure, optimizes air flow path, and improves the exhaust efficiency of range hood.
[0004] The utility model aims at overcoming the shortcomings of prior art, providing a kind of wind wheel for range hood, which has simple structure, low manufacturing cost, variable width design of impeller blade, adapts to various environmental requirements and range hood use, is practical, stable in structure, optimizes air flow path, and improves the exhaust efficiency of range hood.
[0005] The front end width of the impeller blade is D1, the rear end width is D3, and D1 gradually increases to D3 along the axis direction.
[0006] The front end width of the impeller blade is D1, the middle width is D2, and the rear end width is D3, D1 gradually increases to D2 along the axis direction, and D2 gradually reduces to D3 along the axis direction.
[0007] The front end width of the impeller blade is D1, the middle width is D2, and the rear end width is D3, D1 gradually increases to D2 along the axis direction, and D2 and D3 are equal in width.
[0008] The impeller blade is circular arc-shaped and is equally spaced in clockwise direction between the upper disc and the hub disc.
[0009] The upper part of the hub disc is an upper disc, and the lower part is a lower disc, and the impeller blades pass through the hub disc and are connected with the upper disc and the lower disc respectively, and the three are connected as a whole.
[0010] The beneficial effects of the utility model are: 1. simple structure, low manufacturing cost, and improved market competitiveness. 2. The gradually changing width design of the impeller blades effectively increases the air inlet, optimizes the air flow path, and improves the exhaust efficiency of the range hood. 3. The design of multiple embodiments is suitable for use and actual demand of various types of range hoods, and has strong practicality. 4. The arc-shaped arrangement of the impeller blades generates a large amount of kinetic energy through passive acceleration of airflow inside the impeller blades, thereby more effectively removing oil fumes. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a general assembly effect diagram in the utility model.
[0012] Figure 2 It is a schematic diagram of the impeller blade structure of embodiment 1 in the utility model.
[0013] Figure 3 It is a general assembly effect diagram of the hub disc in the utility model.
[0014] Figure 4 It is a schematic diagram of the impeller blade structure of embodiment 2 in the utility model.
[0015] Figure 5 It is a schematic diagram of the impeller blade structure of embodiment 3 in the utility model.
[0016] Figure 6 It is a schematic diagram of the cross-sectional structure of the impeller blade in the utility model. DETAILED DESCRIPTION
[0017] The utility model will be further described in detail below in combination with the drawings. A range hood fan includes an impeller upper disc 2 and an impeller hub disc 1, a plurality of impeller blades 4 are installed between the upper disc 2 and the hub disc 1, and the impeller blades 4 connect the two as a whole. The inner side of the impeller blade 4 is arranged in an arc shape, and the width of the front end gradually changes towards the rear end direction.
[0018] The width of the front end of the impeller blade 4 is D1, the width of the rear end is D3, and D1 gradually increases to D3 along the axis direction.
[0019] The width of the front end of the impeller blade 4 is D1, the width of the rear end is D3, and D1 gradually increases to D2 along the axis direction, and D2 gradually decreases to D3 along the axis direction.
[0020] The width of the front end of the impeller blade 4 is D1, the width of the rear end is D3, and D1 gradually increases to D2 along the axis direction, and D2 and D3 are equal in width.
[0021] The impeller blades 4 are arc-shaped and are distributed clockwise circumferentially between the upper disk 2 and the hub disk 1.
[0022] The upper part of the hub disc 1 is the upper disc 2, and the lower part is the lower disc 3. The impeller blade 4 passes through the hub disc 1 and is connected to the upper disc 2 and the lower disc 3 respectively, connecting the three into a whole.
[0023] Working Principle: The impeller blades in this design abandon the traditional uniform width design. Instead, the width of the impeller blades gradually changes from the front end to the rear end. Unlike traditional uniform width impellers, the front end of the impeller blade is wider than the rear end, effectively increasing the air inlet area of the fan. When the range hood is turned on, the larger air inlet can more effectively guide air into the fan, further optimizing the airflow path. Oil fumes can pass through the impeller blades more smoothly, thus effectively increasing the air pressure difference of the fan. Even under long-term high-load operation, it can maintain stable air pressure output and improve the efficiency of oil fume removal.
[0024] There are several ways to design impeller blades:
[0025] like Figure 2 As shown in Embodiment 1, the front end width of the impeller blade is D1, and the rear end width is D3. The width of D1 gradually increases towards D3 along the axial direction.
[0026] like Figure 4 In Example 2, the front end width of the impeller blade is D1, the middle width is D2, and the rear end width is D3. D1 gradually increases towards D2 along the axial direction, and D2 gradually decreases towards D3 along the axial direction.
[0027] like Figure 5 As shown in Embodiment 3, the impeller blade has a front end width of D1, a middle width of D2, and a rear end width of D3. D1 gradually increases towards D2 along the axial direction, and D2 and D3 are of equal width.
[0028] Multiple implementation methods allow the impeller blades to be adapted for use with more different types of range hoods and to meet more diverse practical environmental needs. While ensuring overall strength, the gradual change in width makes the impeller more stable at high speeds, reducing the risk of deformation and effectively extending its service life.
[0029] The impeller blades are arranged in an arc shape. When the air passes through the impeller blades, it can be guided and accelerated on the arc surface. The airflow is passively accelerated inside the impeller blades, generating greater kinetic energy, thus more effectively removing oil fumes.
[0030] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.
Claims
1. A fan wheel for a range hood, comprising an impeller upper disc (2) and an impeller hub disc (1), a plurality of impeller blades (4) being mounted between the upper disc (2) and the hub disc (1), the impeller blades (4) connecting the two as a whole, characterized in that: The inner side of the impeller blade (4) is arc-shaped, and the front end width gradually changes in the rear end direction; The front end width of the impeller blade (4) is D1, and the rear end width is D3, and D1 gradually increases to D3 along the axis direction; The impeller blade (4) is circular arc-shaped and is distributed equidistantly between the upper disc (2) and the hub disc (1) in a clockwise direction. The upper part of the hub disc (1) is the upper disc (2), and the lower part is the lower disc (3), and the impeller blade (4) passes through the hub disc (1) and is connected with the upper disc (2) and the lower disc (3) respectively, connecting the three into a whole.
2. The fan wheel of claim 1, wherein: The front end width of the impeller blade (4) is D1, the middle width is D2, and the rear end width is D3, D1 gradually increases to D2 along the axis direction, and D2 gradually decreases to D3 along the axis direction.
3. The fan wheel of claim 1, wherein: The front end width of the impeller blade (4) is D1, the middle width is D2, and the rear end width is D3, D1 gradually increases to D2 along the axis direction, and D2 and D3 are equal in width.