A bionic volute tongue with high-efficiency and low-noise multi-blade centrifugal fan
A centrifugal fan and volute tongue technology, which is applied in the field of bionic volute tongue, can solve the problems such as the influence of performance parameters of high-performance fans, and achieve the effects of reducing enterprise risks and operating costs, improving flexibility, and reducing noise.
Inactive Publication Date: 2018-12-04
DONGHUA UNIV +1
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Problems solved by technology
Although these methods meet the requirements of most fan applications in engineering, they have limitations in the design of high-performance fans, which have a certain impact on the performance parameters of high-performance fans.
Method used
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Embodiment 1
[0022] Such as figure 1 As shown, a bionic volute tongue with high-efficiency and low-noise multi-wing centrifugal fan includes a body 6, wherein the body 6 is a bionic kingfisher head profile structure, and the body 6 is made of synthetic microporous rubber. The profiled structure of the bionic kingfisher head includes an upflow surface, an outer surface 2 and an inner surface 3, the upflow surface is the front edge 1 of the volute tongue, and the profile line of the front edge 1 of the volute tongue is a spline Curve structure or arc curve structure, the outer profile surface 2 and the inner profile surface 3 are cut and connected with the spline curve of the front edge of the volute tongue 1 respectively through arcs, and the outer profile surface 2 is arranged at the rear end and the inner profile surface 3 It is arranged at the front end, and the outer surface 2 and the inner surface 3 are provided with a volute slot 4 for connecting with the volute, and the volute slot 4...
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The invention relates to a bionic volute tongue with a high-efficiency low-noise multi-blade centrifugal fan. The bionic volute tongue comprises a body, the body is of a bionic kingfisher head profile structure, the bionic kingfisher head profile structure comprises an incident flow surface, an outer profile and an inner profile, the incident flow surface is a volute tongue leading edge, a profile line of the volute tongue leading edge is of a spline structure or a circular curve structure, the outer profile and the inner profile are respectively tangentially connected with a spline of the tongue leading edge through circular arcs, the outer profile is arranged at the rear end, the inner profile is arranged at the front end, and a volute clamping groove is formed between the outer profile and the inner profile and used for connecting with a volute. The bionic volute tongue is simple in structure, a traditional design mode of the volute tongue is omitted, the bionic volute tongue is mounted by the aid of a clamping groove mode, design flexibility of a fan volute tongue is greatly improved without changing a structure of a fan volute, and convenience in test improvement of a fan is improved.
Description
technical field [0001] The invention belongs to the technical field of centrifugal fans, in particular to a bionic volute tongue with high-efficiency and low-noise multi-blade centrifugal fans. Background technique [0002] The multi-wing centrifugal fan is a kind of air supply and pressure device required by the current home appliances, automobiles, environmental protection devices, and compact and low-noise environments. Although there are many production enterprises, the design and production technology of low-noise, high-flow, high-efficiency and compact fans with high requirements for use is still in the hands of a few foreign monopoly enterprises. Due to the influence of factors such as aerodynamic noise and structural noise when the fan is working, the performance requirements of the fan are getting higher and higher in some application occasions. Therefore, the research on the multi-blade centrifugal fan is also a current research hotspot. [0003] The volute tongue...
Claims
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IPC IPC(8): F04D29/42F04D29/02F04D29/66
CPCF04D29/023F04D29/422F04D29/661
Inventor 吕宏展高德康陈革
Owner DONGHUA UNIV