Ventilator energy efficiency optimized design method based on systematic mode identification technology

An identification technology and system mode technology, which is applied in the field of ventilation fan energy efficiency optimization design based on system mode identification technology, can solve problems such as lack of detection methods, and achieve the effects of high data reliability, low cost and strong pertinence

Inactive Publication Date: 2009-09-02
田旭东
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Problems solved by technology

At present, none of the enterprises in the ventilator industry has passed the certification, and the fan products have not been officially included in the government procurement catalogue. Indicators suggest improvement measures

Method used

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  • Ventilator energy efficiency optimized design method based on systematic mode identification technology
  • Ventilator energy efficiency optimized design method based on systematic mode identification technology

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Embodiment Construction

[0026] Optimal Design Method of Ventilator Energy Efficiency Based on System Pattern Recognition Technology

[0027] 1. Testing process-----Establishment of mathematical model and energy efficiency expert analysis system

[0028] 1. Energy efficiency value of ventilator

[0029] In the design and testing of the fan, use the shaft efficiency η a To characterize the energy efficiency of the ventilator:

[0030] η a =P u / P a

[0031] Where: P a (kW) ----- Fan shaft power

[0032] P u (kW)-----Ventilator air power

[0033] In the above formula, the fan shaft power is directly measured by a torque meter and a speed measuring instrument, and the fan air power is calculated by the following formula

[0034] P u = P tF q v / 1000

[0035] p tF (Pa)-----Full pressure of fan supply air

[0036] q v (m 3 / h)-----Measured air volume of the fan

[0037] The air volume and total pressure of the ventilator can be measured by the air chamber measuring device specified by the national standard.

...

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Abstract

The invention discloses a fan energy efficiency optimization design method based on system pattern recognition technology. It is the main structure of the fan to be established with a mathematical model. The geometric structure size, the number of blades, the inclination angle, the shape of the volute tongue, etc. are used as basic parameters to change different The geometric parameters of the fan are used as variables, and the actual fan is made for testing, so that a series of experimental data can be obtained. These data represent the relationship between the geometric parameters of the fan and the energy efficiency value. The radial basis function (RBF) neural Network tools to build a model library; for fan products that need to be improved, using the model in the model library based on the structure type and geometric parameter values ​​of the fan can predict that the fan can be expected to be produced according to the parameters adjusted by the corresponding offset. The obtained energy efficiency values, and propose improvement strategies in terms of fan structure type and geometric parameter values. The whole method is simple and easy to implement, has low cost, and is convenient for small and medium-sized enterprises to use.

Description

Technical field [0001] The invention belongs to a design method of a fan, in particular to a fan energy efficiency optimization design method based on system pattern recognition technology. Background technique [0002] In order to improve the industrialization level of my country's ventilator industry and make it convenient for users to choose and use, the former General Bureau of the Ministry of Machinery established the standardization, generalization and serialization of ventilator (referred to as "Sanhua") design work group in 1979, and formulated the ventilator " The overall plan of "three modernizations". The "three modernizations" design and finalization of fans have greatly improved the design and manufacturing level of my country's fan industry; at the same time, it has also brought convenience to the selection and use of fans. However, since the "three modernizations" design of the fan was finalized, the basic model level of the domestic centrifugal fan has not been gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 徐幼斌杨马英张思丹
Owner 田旭东
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