Fan assembly modality adjustment system and fan system
A technology for adjusting the system and assembly mold, which is applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problem that the mass distribution of contact points cannot be predicted and analyzed, and the analysis and test of the influence of mass distribution of contact points on assembly modes cannot be carried out , The assembly mode cannot be changed, etc.
Active Publication Date: 2016-08-24
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0005] In the assembly of the motor and the fan blades in the fan system, the mass distribution of the contact point cannot be predicted and analyzed; the assembly mode cannot be changed, the analysis and test of the influence of the mass distribution of the contact point on the assembly mode cannot be carried out, and a comprehensive assembly mode data table cannot be obtained for noise diagnostics
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[0029] Hereinafter, embodiments will be described with reference to the drawings. In addition, the embodiments shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configuration shown in the following embodiments are not limited to what is necessary as a solution to the invention described in the claims.
[0030] According to the dynamic equation and modal theory, the modal includes the solid frequency and mode shape that are not related to the load, and the damping characteristics determined by the characteristics of the system itself. The mode shape is a local quantity, and the solid frequency and damping are global quantities. As shown by the following formula, the solid frequency mainly depends on the stiffness matrix and the mass distribution matrix, and the mode shape is a local quantity related to the solid frequency, mass matrix and stiffness matrix. Adjust the mass distribution and constraint cond...
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Embodiments of the invention disclose a draught fan assembling modality adjusting system and draught fan system, comprising a draught fan modality testing device, an electric motor and vanes; the upper circumferential surface of the hub of the vanes is provided with a plurality of mounting holes which are communicated with vane shaft holes of the vanes; the motor shaft of the electric motor is installed in a vane shaft hole; an adjusting device for adjusting the assembling modality of the electric motor and the vanes is installed inside any of the plurality of mounting holes. The contact point of the electric motor and the vanes is changed by the adjusting device inside the plurality of mounting holes on the hub of the vanes. The draught fan assembling modality adjusting system in the embodiments of the invention is able to make the vanes contact with the motor shaft by setting a plurality of contact points. The contacting and matching status between the vanes and the motor shaft can be adjusted by contacting the adjusting component, so as to adjust the mass distribution and restrained supporting conditions of the electric motor and the vanes, thereby enabling the draught fan modality testing equipment to achieve analyzing and testing the affection of the contact point mass distribution to the assembling modality.
Description
Technical field [0001] The invention relates to the technical field of air conditioners, and more specifically, to a fan assembly mode adjustment system and a fan system. Background technique [0002] With the joint development of high performance and energy saving and environmental protection of inverter air conditioners, this requires the fan system to have high speed and multi-speed operation capability, high speed to ensure the heat dissipation requirements caused by high performance, and multi-speed to ensure low-speed operation under non-bad conditions. , To achieve energy saving requirements. For this reason, inverter air conditioners mostly use DC motors. However, under the high speed and multi-speed requirements of the fan system, unreasonable assembly modes can easily cause serious noise problems under the action of the motor rotation frequency harmonics. [0003] The so-called mode refers to the natural vibration characteristics of the mechanical structure, and each mo...
Claims
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IPC IPC(8): F04D29/60F04D27/00
CPCF04D29/601
Inventor 周军王继承张馨云周金冶段向春
Owner GREE ELECTRIC APPLIANCES INC