1. Field of Invention
The present invention relates to a dual fan and a dual motor structure thereof, and more particularly, to a dual fan and a dual motor structure thereof with magnetic structure.
2. Related Art
Accompanying to the development of technologies, the integration of the electronic devices is greatly upgraded and heat dissipated from the electronic devices is thus increased. Thermal dissipation becomes more important for maintaining the operation temperature. In the prior art, thermal dissipating structure is generally a fan set or a fan cooperating with a thermal sink. In order to enhance usage efficiency, a dual fan structure is constructed by two independent fans.
In a conventional motor structure or rotor of the fan, a four-points type support is constructed by each shaft threading through two bearings. However, the reliability of the motor structure or the fan is affected by the lifetime, accuracy in assembly, smooth operation of the bearing. Therefore, how to decrease the amount of the bearing, save the cost and raise the reliability has become an essential subject to the rotating structure of the fan and the motor structure thereof.
In view of the foregoing, the present invention provides a dual fan and a dual motor structure thereof to decrease the amount of the bearing, save the cost and raise the reliability by means of magnetic structure.
To achieve the above, a dual motor structure according to the present invention includes a first stator structure, a first rotor structure, a first bearing, a second stator structure, a second rotor structure and a second bearing. The first stator structure and the second stator structure respectively have a first bearing tube and a second bearing tube. The first rotor structure and the second rotor structure respectively have a first shaft and a second shaft. The first shaft and the second shaft are respectively inserted into the first bearing tube and the second bearing tube. The first bearing is disposed in the first bearing tube for supporting the first shaft, and the second bearing is disposed in the second bearing tube for supporting the second shaft. The other end of the first shaft is corresponding to the other end of the second shaft, and which have magnetic interaction therebetween.
To achieve the above, another dual motor structure according to the present invention includes a first stator structure, a first rotor structure, a first bearing, a second stator structure, a second rotor structure, a second bearing and a first magnetic element. The first stator structure and the second stator structure respectively have a first bearing tube and a second bearing tube. The first rotor structure and the second rotor structure respectively have a first shaft and a second shaft. The first shaft and the second shaft are respectively inserted into the first bearing tube and the second bearing tube. The first bearing and the second bearing are respectively telescope onto and adjacent to one ends of the first shaft and the second shaft, and are respectively mounted in the first bearing tube and the second bearing tube. The first magnetic element is disposed between the other end of the first shaft and the other end of the second shaft, and the first magnetic element respectively have magnetic interaction between the first shaft and between the second shaft. The other end of the first shaft is corresponding to the other end of the second shaft.
To achieve the above, a dual fan according to the present invention includes a first impeller, a first motor structure, a second impeller and a second motor structure. The first motor structure and the second motor structure respectively connect with and drive the first impeller and the second impeller. The first motor structure includes a first shaft and a first bearing. The second motor structure includes a second shaft and a second bearing. The first bearing and the second bearing are respectively telescope onto and adjacent to one ends of the first shaft and the second shaft. The other end of the first shaft is corresponding to the other end of the second shaft, and which have magnetic interaction therebetween.
To achieve the above, another dual fan according to the present invention includes a first impeller, a first motor structure, a second impeller, a second motor structure and a first magnetic element. The first motor structure and the second motor structure respectively connect with and drive the first impeller and the second impeller. The first motor structure includes a first shaft and a first bearing. The second motor structure includes a second shaft and a second bearing. The first bearing and the second bearing are respectively telescope onto and adjacent to one ends of the first shaft and the second shaft. The first magnetic element is disposed between the other end of the first shaft and the other end of the second shaft, and the first magnetic element respectively have magnetic interaction between the first shaft and between the second shaft. The other end of the first shaft is corresponding to the other end of the second shaft.
As mentioned above, due to the conventional rectangular support constructed by two bearings is replaced with a three-points type support constructed by the magnetic structure and a bearing, the amount of the bearing can be decreased. Comparing with the prior art, a dual fan and a dual motor structure thereof according to the present invention can save the cost and raise the reliability by means of the magnetic interaction of the magnetic structure. The orientation of the rotating structure can thus be simultaneously maintained.
The present invention will become more fully understood from the detailed description given herein below illustration only, and thus are not limitative of the present invention, and wherein:
The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements.
As shown in
As shown in
The first bearing 30 and the second bearing 60 may be respectively a ball bearing, a roller bearing, an oil-containing bearing, a dynamic-pressure bearing, a sleeve bearing or other bearings.
The dual motor structure 1 may be accommodated or covered in a housing 70. The housing 70 has a rib 72 to reinforce the strength of the structure. The rib 72 may support the first stator structure 10 and the second stator structure 40. In addition, the housing 70 may be integrally formed as a single piece or combined with a plurality of separated members.
A rotating structure of a dual fan according to the present invention is composed of the first shaft 22, the first bearing 30, the first shaft 52 and the first bearing 60. Due to a three-points type support and orientation are constructed by the magnetic interaction between the corresponding ends of the shafts and the bearings, the present invention may be more simplified in structure and easily assembled.
Owing to the detailed constructions and connections of the motor structure, such as coil and magnet, etc., are not major technical characteristics of the present invention, so detailed descriptions thereof will be omitted.
As shown in
In order to adjust the magnetic distribution, the dual motor structure 2 may further comprise at least one magnetically conductive element 26, 56 respectively connected with the first magnetic element 24 and/or the second magnetic element 54. In this embodiment, the dual motor structure 2 can only have one of the first magnetic element 24 and the second magnetic element 54.
As shown in
A first motor structure 6 and a second motor structure 8 may be respectively accommodated in a first housing 74 and a second housing 76. The first housing 74 and the second housing 76 may be combined together or be integrally formed as a single piece.
Owing to the detailed constructions, connections and functions of this embodiment are substantially the same as those of the first embodiment, so detailed descriptions thereof will be omitted.
In summary, due to the conventional rectangular support constructed by two bearings is replaced with a three-points type support constructed by the magnetic structure and a bearing, the amount of the bearing can be decreased. Comparing with the prior art, a dual fan and a dual motor structure thereof according to the present invention can save the cost and raise the reliability by means of the magnetic interaction of the magnetic structure. The orientation of the rotating structure can thus be simultaneously maintained.
Although the present invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to persons skilled in the art. It is, therefore, contemplated that the appended claims will cover all modifications that fall within the true scope of the present invention.
Number | Date | Country | Kind |
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94122133 A | Jun 2005 | TW | national |
Number | Name | Date | Kind |
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5258676 | Reinhardt et al. | Nov 1993 | A |
5674169 | Yang | Oct 1997 | A |
7112905 | Chang et al. | Sep 2006 | B2 |
Number | Date | Country | |
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20070020128 A1 | Jan 2007 | US |