Low-speed large-volume impeller and blower

Abstract

The utility model provides a kind of low speed high volume impeller and air blower, it is related to the technical field of air blower, the low speed high volume impeller, including impeller main body, the impeller main body includes hub and connecting ring, multiple blades are arranged between the hub and the connecting ring, and multiple the blade is evenly arranged along the circumferential direction of the hub;The airflow outlet angle of the impeller main body is α, 170°≤α≤180°. The utility model provides low speed high volume impeller, the airflow outlet angle of the impeller main body is between 170°-180°, in the case of providing equivalent air volume, motor and impeller operating speed reduce about 400rpm, to reduce fan noise about 3dB (A).

Description

Technical Field

[0001] This utility model relates to the technical field of blowers, and in particular to a low-speed, high-volume impeller and blower. Background Technology

[0002] Existing automotive air conditioning systems require high-speed operation of blower impellers to meet certain airflow requirements. However, high-speed operation leads to unstable noise and vibration, affecting the noise performance of the HVAC system. Utility Model Content

[0003] The purpose of this invention is to provide a low-speed, high-volume impeller and blower to alleviate the technical problem of unstable noise and vibration caused by the high-speed operation of the blower impeller when a certain air volume needs to be met.

[0004] This utility model provides a low-speed, high-volume impeller, including an impeller body, the impeller body including a hub and a connecting ring, and a plurality of blades are arranged between the hub and the connecting ring, and the plurality of blades are evenly arranged along the circumference of the hub. The airflow outlet angle of the impeller body is α, where 170°≤α≤180°.

[0005] In an optional embodiment, the maximum curvature of the blade is β, where 5.4 mm ≤ β ≤ 5.8 mm. In an optional embodiment, the maximum curvature of the blade is 5.6 mm.

[0006] In an optional embodiment, the maximum thickness of the blade is γ, where 1.0 mm ≤ γ ≤ 1.4 mm. In an optional embodiment, the maximum thickness of the blade is 1.2 mm.

[0007] In an optional embodiment, 31 blades are provided between the hub and the connecting ring. In an optional embodiment, the hub has an assembly end with an assembly hole for assembling a motor shaft; the hub has an assembly end with an assembly hole for assembling a motor shaft; and a guide surface is provided between the assembly end and the outer edge of the hub.

[0008] In an optional embodiment, a magnetic ring is provided on the outer sleeve of the assembly end, and the magnetic ring is injection molded into the assembly end insert. In an optional embodiment, a bearing chamber is provided in the assembly hole, and the bearing chamber is injection molded with the assembly end insert. This invention provides a low-speed, high-volume impeller. The airflow outlet angle of the impeller body is between 170° and 180°. Under the same airflow conditions, the operating speed of the motor and impeller is reduced by about 400 rpm, thereby reducing the fan noise by about 3 dB(A).

[0009] This utility model provides a blower, including the low-speed, high-volume impeller described in any of the foregoing embodiments.

[0010] Compared with the prior art, the blower provided by this utility model has the low-speed, high-volume impeller provided by this utility model, and thus has all the beneficial effects of the low-speed, high-volume impeller provided by this utility model. Attached Figure Description

[0011] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 A schematic diagram of the structure of the low-speed, high-volume impeller provided in this embodiment of the utility model; Figure 2 for Figure 1 A schematic diagram of the low-speed, high-volume impeller from another angle is shown. Figure 3 for Figure 1 The diagram shows another angle of the low-speed, high-volume impeller. Figure 4 for Figure 3 The diagram shown is a structural schematic diagram of section AA of a low-speed, high-volume impeller.

[0013] Icons: 100-Hub; 200-Connecting ring; 300-Blade; 400-Assembly end; 500-Magnetic ring; 600-Bearing chamber; 700-Guide surface. Detailed Implementation

[0014] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0015] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0016] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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 application.

[0017] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0018] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0019] Example Reference Figures 1-4 This utility model provides a low-speed, high-volume impeller, including an impeller body, the impeller body including a hub 100 and a connecting ring 200, and a plurality of blades 300 are arranged between the hub 100 and the connecting ring 200, and the plurality of blades 300 are evenly arranged along the circumference of the hub 100. The airflow outlet angle of the impeller body is α, where 170°≤α≤180°.

[0020] In some embodiments, a plurality of blades 300 are provided between the hub 100 and the connecting ring 200 of the impeller body of the low-speed, high-volume impeller. The connecting ring 200 helps to prevent the plurality of blades 300 from deforming during rotation, thereby improving the stability of the impeller body rotation and increasing the strength of the impeller body.

[0021] The airflow outlet angle of the impeller body is between 170° and 180°, which can reduce the operating speed of the motor and impeller by about 400 rpm while providing the same air volume, thereby reducing the fan noise by about 3 dB(A).

[0022] The airflow exit angle is formed by the tangent between the airflow exit direction and the circular region of the blade's 30° rotation.

[0023] Reference Figure 3 In an optional embodiment, the maximum curvature of the blade 300 is β, where 5.4 mm ≤ β ≤ 5.8 mm. In an optional embodiment, the maximum curvature of the blade 300 is 5.6 mm.

[0024] In some embodiments, the blade 300 adopts a double-arc airfoil structure, and the maximum curvature of the blade 300 is between 5.4mm and 5.8mm, preferably 5.6mm. This can effectively increase the strength of the blade 300 while increasing the air volume; that is, to achieve a large air volume at low speed, and under the same air volume, the operating speed of the motor and impeller is reduced, thereby reducing the fan noise.

[0025] Reference Figure 3 In an optional embodiment, the maximum thickness of the blade 300 is γ, where 1.0 mm ≤ γ ≤ 1.4 mm. In an optional embodiment, the maximum thickness of the blade 300 is 1.2 mm.

[0026] In an optional embodiment, 31 blades 300 are provided between the hub 100 and the connecting ring 200.

[0027] In some embodiments, the maximum thickness of the blade 300 is between 1.0 mm and 1.4 mm, and preferably, the maximum thickness of the blade 300 is 1.2 mm; 31 blades 300 are provided between the hub 100 and the connecting ring 200, and the 31 blades 300 are evenly arranged in the circumference of the connecting ring 200.

[0028] Reference Figure 3 This best allows for a deeper understanding of the maximum thickness, maximum camber, and airflow exit angle used to describe the blade in this paper; the maximum thickness refers to the thickness at the location where the blade thickness is at its maximum. Figure 3 The letter "γ" in the equation indicates the maximum thickness; the maximum camber is the distance between the two ends of the blade. Figure 3 The letter "β" in the equation indicates the maximum camber; the airflow exit angle is formed by the tangent between the airflow exit direction and the circular region of the blade's 30° rotation. Figure 3 The letter "α" in the figure represents the airflow outlet angle.

[0029] Compared to existing technologies, this method effectively reduces the weight of the impeller body while ensuring the structural strength of the impeller body.

[0030] Reference Figure 4 In an optional embodiment, the hub 100 has an assembly end 400, and the assembly end 400 is provided with an assembly hole for assembling a motor shaft; the hub 100 has an assembly end 400, and the assembly end 400 is provided with an assembly hole for assembling a motor shaft; and a guide surface 700 is provided between the assembly end 400 and the outer edge of the hub 100.

[0031] In some embodiments, the hub 100 has an assembly end 400, on which an assembly hole is provided, and the motor shaft matches the assembly hole; two bearings are provided in the assembly hole, and the bearings are sleeved on the motor shaft, which is used to support and fix the impeller body.

[0032] The guide surface 700 of the hub 100 has an inverted parabolic shape, which effectively increases smoothness, reduces noise, and increases impeller efficiency.

[0033] In an optional embodiment, a magnetic ring 500 is provided on the outer sleeve of the assembly end 400, and the magnetic ring 500 is injection molded into the assembly end 400. In an optional embodiment, a bearing chamber 600 is provided in the assembly hole, and the bearing chamber 600 is injection molded into the assembly end 400. In some embodiments, a magnetic ring 500 is provided on the outer sleeve of the assembly end 400, and a bearing chamber 600 is provided in the assembly hole inside the assembly end 400; wherein, the magnetic ring 500 and the bearing chamber 600 are both embedded during the injection molding process of the impeller body; the bearing chamber 600 is used to place the bearing, and the bearing is used to assemble with the motor shaft.

[0034] This invention provides a low-speed, high-volume impeller. The airflow outlet angle of the impeller body is between 170° and 180°. Under the same airflow conditions, the operating speed of the motor and impeller is reduced by about 400 rpm, thereby reducing the fan noise by about 3 dB(A).

[0035] This utility model provides a blower, including the low-speed, high-volume impeller described in any of the foregoing embodiments.

[0036] Compared with the prior art, the blower provided by this utility model has the low-speed, high-volume impeller provided by this utility model, and thus has all the beneficial effects of the low-speed, high-volume impeller provided by this utility model.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A low-speed, high-volume impeller, characterized in that, The impeller body includes a hub (100) and a connecting ring (200). A plurality of blades (300) are disposed between the hub (100) and the connecting ring (200), and the plurality of blades (300) are evenly disposed along the circumference of the hub (100). The airflow outlet angle of the impeller body is α, 170°≤α≤180°; the maximum curvature of the blade (300) is β, 5.4mm≤β≤5.8mm; the maximum thickness of the blade (300) is γ, 1.0mm≤γ≤1.4mm.

2. The low-speed, high-volume impeller according to claim 1, characterized in that, The maximum curvature of the blade (300) is 5.6 mm.

3. The low-speed, high-volume impeller according to claim 1, characterized in that, The maximum thickness of the blade (300) is 1.2 mm.

4. The low-speed, high-volume impeller according to claim 1, characterized in that, 31 blades (300) are provided between the hub (100) and the connecting ring (200).

5. The low-speed, high-volume impeller according to claim 1, characterized in that, The hub (100) has an assembly end (400) with an assembly hole for assembling a motor shaft; and a guide surface (700) is provided between the assembly end (400) and the outer edge of the hub (100).

6. The low-speed, high-volume impeller according to claim 5, characterized in that, The assembly end (400) is fitted with a magnetic ring (500), and the magnetic ring (500) is injection molded into the assembly end (400).

7. The low-speed, high-volume impeller according to claim 5, characterized in that, The assembly hole is provided with a bearing chamber (600), and the bearing chamber (600) and the assembly end (400) are injection molded inserts.

8. A blower, characterized in that, Including the low-speed, high-volume impeller as described in any one of claims 1-7.

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