Method and device for maintaining air outlet temperature and adjusting air volume for air conditioning system

Abstract

The invention discloses a method for maintaining the air outlet temperature and adjusting the air volume for an air conditioning system. The method comprises the steps that S1, the air supply temperature and the air return temperature are used as control variables and controlled by a first controller and a second controller separately when an air conditioning system is in operation; S2, the firstcontroller controls the opening of a water valve to maintain the air supply temperature as the preset air supply temperature according to the current air supply temperature and the preset air supply temperature; and S3, the second controller controls the speed of an air supply fan to maintain the air return temperature as the preset air return air temperature according to the current air return temperature and the preset air return temperature. The invention further discloses a device for maintaining the air outlet temperature and regulating the air volume for the air conditioning system. Thedevice comprises a management module, a first control module and a second control module. According to the method and device for maintaining the air outlet temperature and adjusting the air volume forthe air conditioning system, the air volume of a space place can be adjusted under the premise of controlling the air supply temperature, the energy saving control of the air conditioning system is realized, so that the effect of saving energy is achieved; and meanwhile, the reliability of the air return temperature control and the air supply temperature control is improved.

Description

technical field [0001] The invention relates to the technical field of digital control, in particular to a method and a device for maintaining the outlet air temperature and adjusting the air volume of an air-conditioning system. Background technique [0002] Air-conditioning has been widely used by people with its good effects such as refrigeration. The return air temperature control of the air conditioner and the supply air temperature control of the air conditioner play an important role in the good operation of the air conditioner. [0003] The current technology is an air-conditioning control technology that simultaneously controls the return air temperature and the supply air temperature. A fixed finite control strategy has been formulated for different working conditions. After collecting various temperature information, one of the control strategies is selected to control multiple control devices. Unified control, through the synergistic effect of multiple control d...

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Problems solved by technology

[0004] However, in the current technology, the constant air volume control method will inevitably cause a large waste of energy by using the air valve to throttle the flow, so the constant air volume control method has a series of problems such as the inability to adjust the load in the airtight place and energy waste.

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