High-speed wind wheel for range hood

Abstract

A high-speed wind wheel for a range hood is characterized in that the high-speed wind wheel comprises a hub and an outer wheel ring located at the outer end of the hub, and a plurality of main fan blades are connected with the outer wheel ring; the hub and the outer rim are connected and fixed into a whole by the main fan blades; the hub is provided with a center hole, and the driving motor is connected with the center hole and drives the wind wheel to rotate. The hub is further connected with an auxiliary wheel ring, a plurality of auxiliary fan blades are connected between the auxiliary wheel ring and the outer wheel ring, and the auxiliary fan blades are arranged in the air inlet of the wind wheel in an inclined mode. The range hood has the advantages that oil smoke firstly passes through the auxiliary fan blades to provide initial wind pressure for the wind wheel before entering the wind wheel, airflow enters the wind wheel, is pressurized by the main fan blades and then is discharged, and compared with a traditional single-stage wind wheel, the wind pressure of the range hood can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to a range hood accessory, in particular to a high-speed fan wheel for the range hood. Background Art

[0002] Range hoods have become an indispensable appliance in modern kitchens. Their primary function is to remove cooking fumes, maintaining clean indoor air and reducing their impact on human health and the living environment. Market research indicates that approximately 85% of consumers are dissatisfied with the suction power of range hoods, believing that existing models are insufficient to thoroughly remove fumes. Consequently, suction power is a key performance metric that consumers prioritize when choosing a range hood. This translates to air volume, air pressure, and noise becoming key indicators in evaluating range hood performance.

[0003] In recent years, with the development of technology and the continuous improvement of consumer demand, the range hood industry has entered a development stage with the main goal of improving suction power. Range hoods with high suction power have gradually become the mainstream choice in the market. This trend reflects the strong demand of consumers for high-efficiency and low-noise range hoods.

[0004] The ribbed impeller is a key component in range hood design. Its design directly impacts the hood's overall performance, including air pressure, fume extraction efficiency, and noise levels. However, existing range hoods often fail to meet consumer demands due to issues such as insufficient air pressure, low fume extraction efficiency, and excessive noise.

[0005] To address these issues, existing technologies, such as Chinese invention patent CN20181012840.8, propose a turbine with booster fins and its application in range hoods. This design employs booster fins on the impeller to achieve secondary boosting of the turbine blades, improving the range hood's fume extraction efficiency and reducing noise. However, this technical solution has several drawbacks, including the large number of booster fins, complex processing, and high manufacturing costs, which limit further performance improvements and expanded applications.

[0006] Furthermore, existing range hood impellers lack rigidity due to structural limitations, requiring repeated dynamic balancing during production. Even after these adjustments, the impellers are susceptible to deformation during installation and use due to the same lack of rigidity, making it difficult to guarantee accuracy. Furthermore, with market demands for increasingly high wind pressure, the impeller's strength is insufficient to support high-speed operation, necessitating further improvements. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a high-speed impeller for range hoods that is simple in structure, easy to produce and process, low in production cost, high in impeller strength, and capable of adapting to high-speed operation. This utility model achieves this purpose in the following manner: A high-speed impeller for a range hood, comprising a hub and an outer rim at an outer end thereof, a plurality of main blades connected to the outer rim; the main blades connect and fix the hub and the outer rim into a whole;

[0008] The hub is provided with a center hole, and the driving motor is connected to the center hole and drives the wind wheel to rotate;

[0009] The hub is also connected to a secondary wheel rim, and a number of secondary fan blades are connected between the secondary wheel rim and the outer wheel rim. The secondary fan blades are obliquely arranged in the air inlet of the wind wheel.

[0010] The inner end of the hub is also provided with an inner rim, and several main blades pass through the hub, so that the outer ends of the main blades are connected to the outer rim; the inner ends of the main blades are connected to the inner rim, and the hub, outer rim and inner rim are connected and fixed as a whole.

[0011] The secondary wheel rim is disc-shaped, and its diameter is smaller than that of the outer wheel rim.

[0012] The secondary wheel rim is connected to the outer wheel rim via a plurality of ribs, and the secondary fan blades are arranged on the side walls of the ribs.

[0013] The secondary wheel rim, outer wheel rim, rib plate and secondary fan blades are integrally stamped from metal plates.

[0014] The secondary wheel rim is fixed to the outer end surface of the wheel hub by welding, riveting or screwing.

[0015] The width of the auxiliary blades is gradually increased from the outer rim to the auxiliary rim.

[0016] The width of the auxiliary blades is gradually reduced from the outer rim to the auxiliary rim.

[0017] The end face of the inner rim is also provided with a rear rim, and the main fan blades pass through the inner rim and are connected to the rear rim; the main fan blades connect and fix the hub, outer rim, inner rim and rear rim into a whole.

[0018] The auxiliary fan blade and the outer rim are integrally formed from metal plates, the outer end of the auxiliary fan blade is integrally connected to the outer rim, and the inner end of the auxiliary fan blade is provided with an insert plate, which is inserted into a socket provided on the hub for fixation.

[0019] The beneficial effects of the present invention are: 1. Simple structure, low production cost, and improved market competitiveness. 2. Before the oil smoke enters the wind wheel, it first passes through the auxiliary fan blades to provide the wind wheel with initial wind pressure. After the airflow enters the wind wheel, it is discharged after being pressurized by the main fan blades. Compared with the traditional single-stage wind wheel, its wind pressure can be significantly improved. 3. The auxiliary wheel rim, outer wheel rim, rib plate and auxiliary fan blades are integrally stamped from metal plates, which can effectively ensure the supporting force of the auxiliary fan blades, thereby improving the rigidity of the wind wheel and ensuring that the wind wheel can work stably and efficiently for a long time, so that it can be applied to range hoods with higher speeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1-3 This is the assembly effect diagram of the first embodiment of the utility model.

[0021] Figure 4 This is the structural assembly drawing of the utility model.

[0022] Figure 5-6 This is a schematic diagram of the auxiliary fan blade structure in the utility model.

[0023] Figure 7-8 This is the assembly effect diagram of the second embodiment of the utility model.

[0024] Figure 9 This is a cross-sectional view of the structure of the second embodiment of the present utility model. DETAILED DESCRIPTION

[0025] The present invention is further described below in detail with reference to the accompanying drawings. A high-speed impeller for a range hood includes a hub 1 and an outer rim 2 at its outer end, with a plurality of main blades 4 connected to the outer rim 2; the main blades 4 connect and fix the hub 1 and the outer rim 2 into a whole;

[0026] The hub 1 is provided with a central hole 5, and the driving motor is connected to the central hole 5 and drives the wind wheel to rotate;

[0027] The hub 1 is also connected to a secondary wheel rim 6, and a number of secondary fan blades 7 are connected between the secondary wheel rim 6 and the outer wheel rim 2. The secondary fan blades 7 are obliquely arranged in the air inlet of the wind wheel.

[0028] The inner end of the hub 1 is also provided with an inner rim 3, and several main fan blades 4 pass through the hub 1, so that the outer ends of the main fan blades 4 are connected to the outer rim 2; the inner ends of the main fan blades 4 are connected to the inner rim 3, and the hub 1, outer rim 2, and inner rim 3 are connected and fixed as a whole.

[0029] The secondary wheel rim 6 is disc-shaped, and its diameter is smaller than that of the outer wheel rim 2 .

[0030] The secondary wheel rim 6 is connected to the outer wheel rim 2 via a plurality of ribs 8 , and the secondary fan blades 7 are arranged on the side walls of the ribs 8 .

[0031] The secondary wheel rim 6, the outer wheel rim 2, the ribs 8 and the secondary blades 7 are integrally stamped from metal plates.

[0032] The secondary wheel rim 6 is fixed to the outer end surface of the wheel hub 1 by welding, riveting, or screwing.

[0033] The width of the auxiliary blades 7 is gradually increased from the outer rim 2 to the auxiliary rim 6.

[0034] The width of the auxiliary blades 7 is gradually reduced from the outer rim 2 to the auxiliary rim 6.

[0035] like Figure 7-9 As shown, the end face of the inner rim 3 is also provided with a rear rim 9, and the main fan blades 4 pass through the inner rim 3 and are connected to the rear rim 9; so that the main fan blades 4 connect and fix the hub 1, outer rim 2, inner rim 3 and rear rim 9 into a whole.

[0036] The auxiliary blade 7 and the outer rim 2 are integrally formed from a metal plate. The outer end of the auxiliary blade 7 is integrally connected to the outer rim 2. The inner end of the auxiliary blade 7 is provided with an inserting plate 71 which is inserted into the socket 11 provided on the hub 1 and fixed.

[0037] Working Principle: Before entering the impeller, oil smoke first passes through the diagonally arranged auxiliary blades. This unique design provides initial wind pressure for the impeller. The presence of the auxiliary blades not only enhances the wind force but also paves the way for subsequent wind pressure increases. This pre-pressurization design significantly improves overall oil smoke extraction efficiency.

[0038] Furthermore, after the airflow gains initial pressure through the auxiliary blades, it enters the rotor body, where it is further pressurized by the main blades. The main blades effectively pressurize the airflow as they rotate, significantly increasing the air pressure. Compared to traditional single-stage rotors, this two-stage pressurization design significantly increases air pressure, allowing for the rapid and efficient removal of oil smoke.

[0039] Furthermore, the introduction of auxiliary blades not only provides initial air pressure but also helps improve oil fume separation. As the airflow passes through the diagonally arranged auxiliary blades, larger oil fume particles and other impurities are more easily separated, reducing the processing burden on the main blades, improving overall oil fume purification efficiency, and extending the impeller cleaning cycle.

[0040] Furthermore, while traditional range hoods increase air pressure, they often also increase noise. However, the present invention, through the oblique arrangement of the auxiliary fan blades and the optimized design of the main fan blades, achieves both increased air pressure and reduced operating noise, thus improving the user experience.

[0041] Compared with traditional technologies, the booster impeller of the present invention adopts a design concept of simplified structure. The configuration of components such as the secondary rim, ribs and secondary blades is intended to achieve an efficient boosting effect, while taking into account manufacturing costs and ease of assembly, effectively controlling product costs. At the same time, compared with traditional technologies, the present invention uses ribs to directly connect the inner rim and the secondary rim, which strengthens the entire impeller structure and prevents the impeller from deforming or being damaged during production or use. Therefore, the impeller in the present application has stronger rigidity, so it can be used in range hoods with higher speeds, thereby increasing the range hood's ability to remove smoke.

[0042] In summary, the booster impeller for range hoods of the present invention achieves efficient purification and emission of oil fumes through its innovative two-stage boosting design, and also demonstrates significant technical advantages in reducing noise and controlling costs, so it can be widely promoted and used.

[0043] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A high-speed impeller for a range hood, characterized by: It comprises a hub (1), and an outer rim (2) located at the outer end thereof, and a plurality of main blades (4) connected to the outer rim (2); the main blades (4) connect and fix the hub (1) and the outer rim (2) into a whole; The hub (1) is provided with a central hole (5), and the driving motor is connected to the central hole (5) and drives the wind wheel to rotate; The hub (1) is further connected to a secondary wheel rim (6), and a plurality of secondary fan blades (7) are connected between the secondary wheel rim (6) and the outer wheel rim (2). The secondary fan blades (7) are obliquely arranged in the air inlet of the wind wheel.

2. The high-speed impeller for a range hood according to claim 1, characterized in that: The inner end of the hub (1) is further provided with an inner rim (3), and a plurality of main blades (4) pass through the hub (1), so that the outer ends of the main blades (4) are connected to the outer rim (2); and the inner ends of the main blades (4) are connected to the inner rim (3), so that the hub (1), the outer rim (2), and the inner rim (3) are connected and fixed as a whole.

3. The high-speed impeller for a range hood according to claim 1, characterized in that: The secondary wheel rim (6) is disc-shaped, and the diameter of the secondary wheel rim (6) is smaller than that of the outer wheel rim (2).

4. The high-speed impeller for a range hood according to claim 1, characterized in that: The secondary wheel rim (6) and the outer wheel rim (2) are connected via a plurality of ribs (8), and the secondary fan blades (7) are arranged on the side walls of the ribs (8).

5. The high-speed impeller for a range hood according to claim 3, characterized in that: The secondary wheel rim (6), the outer wheel rim (2), the rib plate (8) and the secondary fan blade (7) are integrally stamped from metal plates.

6. The high-speed impeller for a range hood according to any one of claims 1 to 4, characterized in that: The secondary wheel rim (6) is fixed to the outer end surface of the wheel hub (1) by welding, riveting, or screwing.

7. The high-speed impeller for a range hood according to claim 1, characterized in that: The width of the auxiliary blades (7) is gradually increased from the outer rim (2) toward the auxiliary rim (6).

8. The high-speed impeller for a range hood according to claim 1, characterized in that: The width of the auxiliary blades (7) is gradually reduced from the outer rim (2) toward the auxiliary rim (6).

9. The high-speed impeller for a range hood according to claim 2, characterized in that: The end surface of the inner rim (3) is further provided with a rear rim (9), and the main fan blades (4) pass through the inner rim (3) and are connected to the rear rim (9); the main fan blades (4) connect and fix the hub (1), the outer rim (2), the inner rim (3) and the rear rim (9) into a whole.

10. The high-speed impeller for a range hood according to claim 1, characterized in that: The auxiliary blade (7) and the outer wheel rim (2) are integrally formed from a metal plate. The outer end of the auxiliary blade (7) is integrally connected to the outer wheel rim (2). The inner end of the auxiliary blade (7) is provided with an inserting plate (71) which is inserted into a socket (11) provided on the wheel hub (1) for fixation.

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