The present invention relates generally to the fan field, and more particularly to a fan frame seat and a fan, in which the structure of the frame seat is changed to restrain the vibration.
Currently, the information technologies have greatly advanced. Many electronic information dealers have developed various products with higher and higher operation performances. Along with the advance of the information technologies, higher and higher heat dissipation performances are required. It is very popular and a mainstream to use fans to dissipate the heat. However, when the fan operates at high speed, in case the structure of the frame body of the fan cannot resist against the aerodynamic force of the fan, the fan will vibrate and make noise. The vibration of the fan will affect the electronic equipment or even seriously damage the electronic equipment.
In order to solve the above problem, some manufacturers have improved the structure of the fan frame seat of the fan. Please refer to FIGS.1A and 1B.
It is therefore tried by the applicant to provide a fan frame seat and a fan thereof to solve the above problems existing in the conventional fans.
It is therefore a primary object of the present invention to provide a fan frame seat, in which the configuration of the frame seat is changed to reinforce the entire structure and enhance the damping effect.
It is a further object of the present invention to provide a fan, in which the configuration of the frame seat is changed to enhance the damping effect so as to absorb the vibration created when the rotor assembly rotates.
To achieve the above and other objects, the fan frame seat of the present invention includes: a main body having a first open face and a second open face, a base seat being disposed on the second open face; and at least one recess formed on the second open face and positioned in the base seat.
The fan of the present invention includes a frame seat, a stator assembly and a rotor assembly. The frame seat includes a main body having a first open face and a second open face. A base seat is disposed on the second open face. A bearing cup is disposed on the base seat. At least one recess is formed on the second open face and positioned in the base seat. The stator assembly is fitted around the bearing cup. The rotor assembly is inserted in the bearing cup corresponding to the stator assembly.
According to the above structure, the recess is designed in accordance with the vibration mode of the fan frame body. The recess changes the structural features of the frame seat. The recess serves as a self-controlled damper for restraining or absorbing the energy of the fundamental frequency. Therefore, the fan frame seat can bear greater shaft top pressure and have higher bending resistance and shear resistance. Also, the cost of the fan is lowered.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein:
Please refer to
The first open face 211 is positioned on a first reference face DP1. The second open face 212 is positioned on a second reference face DP2. The base seat 2121 is positioned between the first reference face DP1 and the second reference face DP2.
To speak in short, the second open face 212 (the bottom face) of the main body 21 is formed with the recess 21222 to change the configuration of the main body 21 so as to change the features of the structure.
Moreover, the formation of the recess 2122 can be started from the parts of the static blades or the connection arms. This further makes the base seat 2121 and the second open face 212 positioned on different plane faces to create different structural features.
In addition, the manufacturing of the recess 2122 will not lead to any change, (for example, become thinner) of the material thickness of the base seat 2121 of the present invention. Therefore, a uniform damping effect can be kept and the structural strength of the entire fan frame seat can be ensured.
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When the stator assembly 22 drives the rotor assembly 23 to rotate, the aerodynamic force generated by the fast rotating fan impeller 232 is transmitted and spread out by way of vibration of the main body 21. The recess 2122 formed on the base seat 2121 changes the structural features of the main body 21 so as to provide a restraining effect against the vibration (as the effect provided by a damper). Therefore, the fan can bear higher shaft top pressure, bending force and shear force.
In addition, in the above embodiment, the fan has one single dynamic blade for illustration purposes. However, the technical features of the present invention are applicable to various fans such as dynamic/static blade fan, axial-flow fan with double dynamic blades, single-side-air-draft fan, double-side-air-draft-fan, multiple-side-air-draft-fan and centrifugal fan.
In conclusion, the present invention has the following advantages:
The present invention has been described with the above embodiments thereof and it is understood that many changes and modifications in such as the form or layout pattern or practicing step of the above embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.