Fan device

Abstract

A fan device comprises a hub defining an inner space in a surrounding mode, a plurality of fan blades extending outwards from the hub at intervals, a magnetic conductive ring arranged in the inner space and defining a penetrating space, and a mandrel connected to the hub and extending to the penetrating space in the axial direction. And the magnet ring is arranged in the penetrating space and surrounds the core shaft. Wherein the magnet ring is made of a moldable plastic magnet or a rubidium-iron-boron magnet, so that the magnet ring can define at least one configuration groove, and the configuration groove can be suitable for being filled with a balancing weight according to the balance weight requirement, so that the fan device can stably run.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electric power driven operating equipment, in particular to a kind of fan device. BACKGROUND

[0002] Referring to Figure 1 , a present fan blade 1, including a hub 11 around defining a inner space 110, a plurality of mutually spaced fan blade 12 from the hub 11 outwardly extending, a shaft 13 connected to the hub 11 and arranged in the inner space 110 along an axial direction, and a magnet ring 14 arranged in the inner space 110 and surrounding the shaft 13. Wherein, the hub 11 includes an outer ring shell 111, and an inner ring shell 112 spaced radially with the outer ring shell 111 and made of magnetic material. By the cooperation of the inner ring shell 112 and the magnet ring 14, the shaft 13 can be arranged in a motor (not shown) that can generate magnetic induction with the inner ring shell 112 and the magnet ring 14 after the fan blade 1 is operated with magnetic levitation mechanism.

[0003] The overall structural balance of the fan blade 1 operated by magnetic levitation mechanism will obviously affect the stability of operation. Therefore, the outer ring shell 111 of the hub 11 of the fan blade 1 and the inner ring shell 112 also form a plurality of ribs 119 spaced to define a plurality of counterweight grooves 118 for filling counterweight. When the fan blade 1 vibrates and generates noise during operation, the counterweight can be filled in the counterweight groove 118 to balance the fan blade 1 and optimize the stability of operation. However, since the counterweight groove 118 is formed in the hub 11, the structural strength of the hub 11 required to support the fan blade 12 and the shaft 13 is reduced, which in turn adversely affects the operation stability of the fan blade 1. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a fan device that provides free counterweight function without affecting the overall structural strength, so that the operation is more stable.

[0005] The utility model fan device, including a hub around defining an inner space, a plurality of mutually spaced fan blades extending outwardly from the hub, a magnet ring arranged in the inner space and defining a through space, a shaft connected to the hub and extending to the through space along the axial direction, and made of plastic magnet or rubidium iron boron magnet that can be shaped, and arranged in the through space and surrounding the shaft. Wherein, the magnet ring defines at least one configuration groove suitable for filling counterweight.

[0006] The fan device, the magnet ring comprises two end faces respectively located at opposite two ends, and the at least one configuration groove is extended inward from the end face.

[0007] The fan device, the magnet ring defines a plurality of the configuration grooves.

[0008] The fan device, the hub comprises a base plate and a ring plate extended along the shaft direction from the outer periphery of the base plate.

[0009] The fan device, the base plate of the hub has a plurality of first filling grooves recessed inward from the outer side and spaced from each other and suitable for filling the counterweight blocks.

[0010] The fan device, the ring plate of the hub has a plurality of second filling grooves recessed inward from the end away from the base plate and suitable for filling the counterweight blocks.

[0011] The fan device, the second filling grooves are equidistantly spaced from each other around the core shaft.

[0012] The fan device, the base plate of the hub has a plurality of first filling grooves recessed inward from the outer side and spaced from each other and suitable for filling the counterweight blocks. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a perspective exploded view illustrating an impeller of an existing cooling fan;

[0014] Figure 2 It is a perspective exploded view illustrating an embodiment of the fan device of the present application;

[0015] Figure 3 It is a sectional view illustrating the connection relationship of components of the embodiment; and

[0016] Figure 4 It is a schematic view illustrating the case that the counterweight blocks are configured in the plurality of configuration grooves of the magnet ring of the embodiment. DETAILED DESCRIPTION

[0017] The present application will be described in detail below in conjunction with the drawings and embodiments.

[0018] Reference Figure 2 With 3The utility model discloses a fan device's one embodiment contains one wheel hub 2 that surrounds the inner space 20 of definition, multiple pieces each other interval from the wheel hub 2 outward extension fan blade 3, one setting in the inner space 20 and the definition of one through space 40 magnetic ring 4, one connection in the wheel hub 2 and along an axle direction Z extends to the through space 40 core shaft 5, and one with the magnet material of plastic shape is made and is set in the through space 40 and surrounds the core shaft 5 magnet ring 6. To first explain, this embodiment operation, is to make the core shaft 5 through the stator motor (not shown in figure), and through the operation of stator motor and let the magnetic ring 4 and the magnet ring 6 produce magnetic induction, accordingly let this embodiment rotate.

[0019] The wheel hub 2 includes a base plate 21, and a ring plate 22 extending from the outer periphery of the base plate 21 along the axial direction Z. The base plate 21 has a plurality of first filling grooves 210 recessed inward from the outer side and spaced apart from each other, and adapted to be filled with counterweight blocks. The ring plate 22 has a plurality of second filling grooves 220 recessed inward from one end away from the base plate 21 and equidistantly spaced apart from each other around the core shaft 5, and adapted to be filled with counterweight blocks. The fan blades 3 are connected to the ring plate 22 of the wheel hub 2, and the number and shape of each fan blade 3 can be designed as required to form the required airflow field when the embodiment rotates.

[0020] It is to be noted that the wheel hub 2 forms the first filling grooves 210 and the second filling grooves 220 for filling counterweight blocks. However, each first filling groove 210 is formed in the shape of a shallow blind hole, and each second filling groove 220 extends from the outer end by a distance of at most one-fifth of the length of the ring plate 22. Therefore, the overall structural strength of the wheel hub 2 is not affected.

[0021] The magnet ring 6 is specifically selected from plastic magnets made of magnetic material and moldable material, or directly moldable Rb-Fe-B magnets. The moldable plastic magnets and Rb-Fe-B magnets are known. The magnet ring 6 includes two end faces 61 located at opposite ends, and defines at least one configuration groove 60 extending inward from the end face 61 and adapted to be filled with counterweight blocks. In this embodiment, the magnet ring 6 defines a plurality of configuration grooves 60. Since the magnet ring 6 can be directly formed in the shape of the configuration grooves 60, compared with the materials that are difficult to accurately shape or easily broken after processing, the magnet ring 6 can be directly formed in the corresponding shape according to the requirements of forming the configuration grooves 60.

[0022] Reference Figure 4, if there is a situation such as vibration, noise, and the like during operation of the present embodiment, it is possible to consider using the first filling groove 210, the second filling groove 220, or the arrangement groove 60 for counterweight. In the case where Figure 4 The situation presented is explained in the case where one of the arrangement grooves 60 is filled with a counterweight object 9, and the counterweight object 9 can be compensated for operational defects caused by manufacturing and assembly tolerances of the present embodiment by using a hard material in the same form as the arrangement groove 60 or a moldable soil material.

Claims

1. A fan device comprising a hub defining an inner space, and a plurality of blades spaced apart from each other and extending outwardly from said hub; characterized in that: The fan device further comprises: a magnetic conducting ring arranged in the inner space and defining a passing space; a core shaft connected to the hub and extending along an axial direction to the passing space; and a magnet ring made of a plastic magnet or a rare earth magnet and arranged in the passing space around the core shaft, the magnet ring defining at least one configuration groove adapted for filling with a counterweight.

2. The fan arrangement of claim 1, wherein: The magnet ring includes two end faces respectively located at opposite ends, and the at least one configuration groove extends inward from any one of the end faces.

3. The fan arrangement of claim 2, wherein: The magnet ring defines a plurality of the configuration grooves.

4. The fan arrangement of any one of claims 1 to 3, wherein: The hub includes a base plate and a ring plate extending along the axial direction from an outer periphery of the base plate.

5. The fan arrangement of claim 4, wherein: The base plate of the hub has a plurality of first filling grooves recessed inward from an outer side and spaced from each other and adapted for filling with a counterweight.

6. The fan arrangement of claim 4, wherein: The ring plate of the hub has a plurality of second filling grooves recessed inward from an end away from the base plate and adapted for filling with a counterweight.

7. The fan arrangement of claim 6, wherein: The second filling grooves are equally spaced from each other around the core shaft.

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