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Bladeless fan

A bladeless fan and cavity technology, used in liquid variable volume machinery, non-variable volume pumps, variable volume pump components, etc., can solve the problems of large airflow transmission loss in the nozzle and easy deformation of the nozzle.

Inactive Publication Date: 2016-01-13
山东德为电器科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nozzle of this fan is easily deformed, and the transmission loss of the airflow in the nozzle is relatively large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Figure 1 is a schematic view of the fan of the present invention viewed from the front of the device, figure 2 yes figure 1 Side view of the fan shown, image 3 shown figure 1 The internal structure of the fan shown. From Figure 1 to Figure 3 It can be seen that the fan includes a base 2 and a nozzle 1 arranged on the base 2; the base 2 includes a base body 9 and a base 10 located below the base body, the base body 9 has a side wall, and the side wall The wall includes an air inlet 11 in the form of a grid hole; the base body 9 includes an impeller housing 8, an impeller 6 located inside the impeller housing and a motor 7 for driving the impeller in rotation, the impeller 6 comprising a substantially conical hub, Connected to a plurality of blades on the hub and a shroud 15 connected to the outer edges of the plurality of blades, the motor 7 is fixed on a fixing 14 connected to a diffuser 13 located downstream of the impeller 6, the diffuser 13 is fixed on the im...

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PUM

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Abstract

A bladeless fan comprises a nozzle and an airflow generating device for generating airflow passing through the nozzle. The nozzle comprises an annular cavity and a vent, and the annular cavity is approximately symmetrical around an axis. The bladeless fan is characterized in that the nozzle further comprises an oblate cavity, the annular cavity is arranged around the oblate cavity, the periphery of the oblate cavity is communicated with the annular cavity, both the oblate cavity and the annular cavity are provided with depth in axial directions, and the depth of the oblate cavity is smaller than that of the annular cavity. The bladeless fan has the advantages of low airflow transfer loss, stable structure, attractive appearance and the like.

Description

technical field [0001] The invention relates to a fan. In particular, but not exclusively, the present invention relates to a domestic fan, such as a domestic desk fan, for increasing air circulation and air flow in homes, offices and other environments. Background technique [0002] A traditional household fan typically consists of a motor and a set of blades or impellers that are driven in rotational motion by the motor. The set of blades is typically located within a cage that allows airflow to pass through, yet prevents human access to the rotating blades. But in some cases, this kind of fan also has the danger that the human body touches the group of rotating blades. [0003] On November 15, 1949, U.S. Patent US2488467 disclosed a fan without exposed blades. This fan includes a base and a nozzle arranged on the base. The base includes a motor and fan blades driven by the motor. The rotating The blades provide airflow to a nozzle comprising an annular cavity and an ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B41/06F04B39/12
CPCF04D25/08F04F5/16
Inventor 任文华
Owner 山东德为电器科技有限公司