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Constant static-pressure and total-blast duplexing controlling method of blast-variable air-conditioner system

An air-conditioning system and dual control technology, applied in the control of air volume of air-conditioning, the dual control of constant static pressure and total air volume of variable air volume air-conditioning system, can solve the problem of low communication speed, inability to scientifically determine static pressure point and constant static pressure value, Problems such as low supply air temperature

Inactive Publication Date: 2006-11-01
上海大智科技发展有限公司
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Problems solved by technology

The constant static pressure control method cannot scientifically determine the static pressure point and the constant static pressure value in theory, and is often replaced by the return air temperature control in practice, so it will be eliminated
However, the air supply temperature generated by the variable static pressure control method is low, which affects the comfort effect, the system response speed is slow, and the communication speed is low.

Method used

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  • Constant static-pressure and total-blast duplexing controlling method of blast-variable air-conditioner system
  • Constant static-pressure and total-blast duplexing controlling method of blast-variable air-conditioner system

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Embodiment Construction

[0022] Such as figure 1 As shown, the dual control method of constant static pressure and total air volume of the variable air volume air conditioning system of the present invention includes a process of adjusting the speed of fan 1 in the variable air volume air conditioning system through a frequency converter, wherein, in the process of adjusting the speed of the fan It includes a step of determining the predicted speed of the fan and a step of determining the corrected speed of the fan. In the step of determining the predicted speed of the fan, the predicted speed of the fan is calculated by using a constant static pressure control method. In the step of determining the corrected speed of the fan In the step, the real-time running total air volume of the system is obtained by measurement, and the real-time running total air volume of the system is compared with the real-time optimal demand total air volume, and then the real-time total air volume of the system and the real...

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Abstract

The invention comprises a process of regulating the speed of the fan in the variable blast volume air-conditioning system via a frequency converter. The process includes the following steps of determining the prediction speed and the correction speed of the fan. After determining the prediction speed and the correction speed of the fan, a digital controller is used for regulating the speed of fan via the frequency converter.

Description

technical field [0001] The invention relates to ventilation technology, in particular to a method for controlling air volume of an air conditioner, in particular to a dual control method for constant static pressure and total air volume of a variable air volume air conditioning system. Background technique [0002] In the prior art, the air volume control in the variable air volume air conditioning system adopts a constant static pressure control method or a variable static pressure control method. The constant static pressure control method is to install a static pressure sensor at an appropriate position of the air supply system pipe network, for example, 2 / 3 away from the fan. On the premise of maintaining a certain value of the static pressure at this point, the air conditioner can be changed by adjusting the power frequency of the fan. The air volume of the system. The variable static pressure control method is to keep the valve at the end of each VAV between 85% and 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 霍小平
Owner 上海大智科技发展有限公司
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