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System and method for controlling constant air volume of air duct type air conditioning indoor unit

A ducted air conditioner and control system technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., to achieve the effects of improving versatility, constant bus voltage, and improving power factor

Active Publication Date: 2012-10-24
青岛海信网络能源股份有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to provide a constant air volume control system for ducted air conditioner indoor units, which solves the technical problem that the ducted air conditioner indoor units cannot achieve constant air volume output under any static pressure condition

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  • System and method for controlling constant air volume of air duct type air conditioning indoor unit

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Embodiment Construction

[0026] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] Different air ducts, different installation environments and different usage methods will lead to differences in the static pressure of ducted air conditioners. Therefore, during the use of the ducted air conditioner indoor unit, it is necessary to determine the static pressure according to the actual situation, and control the rotational speed of the DC motor according to the static pressure, so as to realize the output of the ducted air conditioner indoor unit with a constant air volume.

[0028] In order to realize the constant air volume output of the ducted air conditioner indoor unit under any static pressure condition, the present invention provides a constant air volume control system and method for the ducted air conditioner indoor unit. Next, the system and method will be described in detail.

[0029] Such as figure 1 As sho...

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Abstract

The invention provides a system and a method for controlling the constant air volume of an air duct type air conditioning indoor unit. The method comprises the following steps of: outputting a constant duty ratio D by a central processing unit to drive a direct current motor; detecting the rotating speed of the direct current motor by a rotating speed detection module, and transmitting the rotating speed to a rotating speed comparison module; comparing the rotating speed with a motor rotating speed value of a rotating speed unit by the rotating speed comparison module to obtain static pressure, and outputting the static pressure to a storage module; and contrasting a required constant air volume and static pressure with the data stored in the target rotating speed unit by the central processing unit to obtain a motor rotating speed value, and controlling the direct current motor to reach the rotating speed value. According to the system and the method for controlling the constant air volume of the air duct type air conditioning indoor unit, the automatic identification of the static pressure can be realized according to different air duct lengths so as to control the constant air volume, so that the output of the constant air volume can be realized under any static pressure conditions.

Description

technical field [0001] The invention belongs to the technical field of air conditioning and refrigeration engineering, in particular to a control system and method capable of ensuring a constant air volume output of an air duct type air conditioner indoor unit. Background technique [0002] Central air conditioners are mainly divided into three categories, namely duct type, fan coil type and refrigerant multi-connection type. The duct-type central air conditioner has a simple structure and reliable operation. Compared with the other two types of central air conditioners, the initial investment of the system is small, which is convenient for centralized air purification and introduction of fresh air, and the indoor air quality is good. [0003] When the ducted air conditioner indoor unit is installed on the project site, the installation environment is different, and there will be different static pressure requirements. The traditional ducted unit uses an AC asynchronous moto...

Claims

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Application Information

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IPC IPC(8): F24F11/047F24F11/75
CPCY02B30/746
Inventor 安丰德陈建兵
Owner 青岛海信网络能源股份有限公司
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