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Air fan

a technology of air fans and fans, which is applied in the direction of rotors, marine propulsion, vessel construction, etc., can solve the problems of oscillation or rotation, injuring the fingers of the fan, and a greater energy consumption of the fan in the prior art, so as to achieve the effect of reducing the damage of the fan

Inactive Publication Date: 2006-03-02
FIRMSTAR HOUSEHOLD APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present utility model provides an air fan with an internal oscillation technology that is energy-efficient, safe, and stable. The air fan includes a main propeller and a main motor for generating air stream, and a wind guide device for changing the wind direction. The wind guide device is driven by an auxiliary motor that is connected to the wind guide device through a rotation-oscillation shifting device. The air fan may also include an ion generator and a water filter. The enclosure in which the main propeller and the wind guide device are both disposed further enhances the stability of the air fan."

Problems solved by technology

In addition, the conventional fans with oscillating heads require a predetermined indoor space for oscillation of the fan head, which is particularly disadvantageous in a narrow environment.
To sum up, one defect of the fans in the prior art is a greater consumption of energy and a larger occupation of space.
2) As the oscillating part (the whole fan head and the whole substantially cylindrical housing) or rotating part (guide vanes) for changing wind direction are exposed to the outside in the prior art, oscillation or rotation might injure by accident the ambient objects or human beings such as an operator, for example, when the juveniles operate the air fan, the oscillating head, housing or rotating vanes might injure his fingers by accident.
In summary, another defect of fans in the prior art is a certain danger in operation.
3) in addition, the conventional fan with oscillating head, in operation, may shift its center of gravity due to oscillation of the head.
Therefore, another defect of fans in the prior art is that the fan in operation is not stable and steady enough and is liable to overturn.

Method used

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Embodiment Construction

[0017] As shown in FIGS. 1 and 2, the air fan of the preferred embodiment (the applicant's product model JH-AFN) according to the present utility model comprises a substantially cylindrical main propeller 19 which may be a conventional propeller used in a transverse flow fan or of other similar configurations, so the specific structure of the main propeller is not described in detail herein. In the description hereunder, “axial direction” refers to the direction of the vertical axis of the main propeller 19 when the air fan is placed normally, and “radial direction” refers to the direction perpendicular to the axis. A main motor 24 is operatively connected to the main propeller 19 in a conventional manner along the axial direction of the main propeller 19, and is used to drive the main propeller 19 to rotate to generate air stream. The main motor 24 is detachably held in a main motor holder 26 via screws.

[0018] The air fan according to the present utility model further comprises a ...

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PUM

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Abstract

The present utility model provides an air fan, comprising: a main propeller (19); a main motor (24) operably connected to the main propeller (19), driving the main propeller (19) to rotate to generate air stream; characterized in that the air fan further comprises a wind guide device composed of a wind guard plate (35) and a wind reject plate (21) and surrounding the main propeller (19), a gap is provided between the wind guard plate (35) and the wind reject plate (21) for facilitating flowing out of air; an auxiliary motor (53) operably connected to the wind guide device via a rotation-oscillation shifting device, for driving the wind guide device to oscillate to change the wind direction.

Description

TECHNICAL FIELD [0001] The present utility model relates to an air fan, comprising a main propeller and a main motor operably connected to the main propeller, the main motor driving the main propeller to rotate to generate air stream. BACKGROUND ART [0002] The prior art discloses various fans such as ground fans, table fans, ceiling fans, vane rotating fans, and transverse flow type fans, some examples of which can be seen in the patent documents U.S. Pat. No. 6,344,065B1, CN1063530C, CN1034043A and CN1147603A or in FS29-SW tower fan as shown in FIG. 4. These conventional air fans have the following drawbacks: [0003] 1) As for conventional ground fans, table fans, ceiling fans and transverse flow type fans, wind direction is changed by allowing the whole fan head and the whole substantially cylindrical housing to oscillate. In this circumstance, the whole fan head and the whole substantially cylindrical housing are large in mass so the rotation inertia is relatively great, so more e...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04D25/10F04DF24F
CPCF04D25/10F04D25/08
Inventor NGAN, HON HING
Owner FIRMSTAR HOUSEHOLD APPLIANCES