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Air duct type indoor unit static pressure automatic adjustment control method and system

An automatic adjustment and adjustment control technology, applied in the heating and ventilation control system, heating and ventilation safety system, space heating and ventilation control input, etc., can solve the problem of unstable air output of the air duct, and achieve the satisfaction of comfort Effect

Active Publication Date: 2018-06-05
珠海格力机电工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the air output volume of the air duct of the existing air duct type indoor unit is unstable, the present invention provides an air duct type indoor unit static pressure that can realize automatic identification of static pressure according to different air duct lengths, thereby realizing constant air volume output. Automatic adjustment control method and system

Method used

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  • Air duct type indoor unit static pressure automatic adjustment control method and system
  • Air duct type indoor unit static pressure automatic adjustment control method and system
  • Air duct type indoor unit static pressure automatic adjustment control method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Such as figure 1 , figure 2 As shown, the embodiment of the present invention provides a static pressure automatic adjustment control method for an air duct type indoor unit, including the following steps:

[0052] S100, control the DC motor of the indoor unit to run at the fan speed corresponding to the preset static pressure after the power is turned on;

[0053] S200, detecting the running current value after the DC motor runs for the first time;

[0054] S300, judging whether the operating current value detected by comparison falls within the target current range corresponding to the preset static pressure;

[0055] S400, performing static pressure stabilization adjustment control according to the result of the judgment and comparison.

[0056]This method automatically adjusts the speed of the DC motor by comparing the detected operating current value with the target current range, so that the ducted indoor unit always maintains a constant air volume output duri...

Embodiment 2

[0096] Based on the same inventive concept, the present invention also provides a static pressure automatic adjustment control system of an air duct type indoor unit. For the implementation, reference may be made to the implementation of the aforementioned methods, and the repeated descriptions will not be repeated.

[0097] see image 3 , Figure 4 As shown, the air duct type indoor unit static pressure automatic adjustment control system provided by the embodiment of the present invention includes a DC motor control module 100, a current detection module 200, a current comparison module 300 and a static pressure stabilization module 400, wherein:

[0098] The DC motor control module 100 is used to control the DC motor of the indoor unit to run at a speed corresponding to the preset static pressure after being powered on;

[0099] The current detection module 200 is configured to detect the running current value after the DC motor runs for the first time;

[0100] The curren...

Embodiment approach

[0105] As an implementable manner, the second target current unit 420 includes a first regulation subunit 421 and a second regulation subunit 422, wherein:

[0106] The first adjustment subunit 421 is used to control the DC machine to run at the speed corresponding to the static pressure of the next stage corresponding to the preset static pressure if the operating current value is greater than or equal to the maximum value of the target current range, and perform the operation after a second period of operation. Detect the current operating current value and judge whether it falls within the target current range corresponding to the current static pressure;

[0107] If it falls, the DC motor maintains the speed corresponding to the current static pressure; if it does not fall, repeat the steps in which the operating current value is greater than or equal to the maximum value of the target current range;

[0108] The second adjustment subunit 422 is used to control the DC moto...

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Abstract

The invention provides an automatic static pressure regulation control method and system for an air duct type indoor unit. The method includes the following steps that after being powered on, a direct-current motor of the indoor unit is controlled to run at the rotating speed corresponding to preset static pressure, a running current value is detected after the direct-current motor runs for a first period of time, whether the detected running current value is within a target current range corresponding to the preset static pressure is judged through comparison, and stable regulation control over static pressure is conducted according to judgment and comparison results. The rotating speed of the direct-current motor is automatically regulated by comparing the detected running current value with the target current range, so that the air duct type indoor unit keeps output of a constant air volume in the installing and using process all the time, and the requirement of users for use comfort is met.

Description

technical field [0001] The invention relates to the field of air conditioner control, in particular to an air duct type indoor unit static pressure automatic adjustment control method and system. Background technique [0002] At present, most ducted indoor units use AC motors with fixed motor speeds. If the return and outlet ducts are too short during installation, the pressure drop will be relatively low, which will lead to relatively high wind speed and high noise, which will affect comfort. In addition, if the return air pipe and the air outlet pipe are too long, the pressure drop will be too high, which will lead to a relatively small wind speed and performance degradation, which will also affect the comfort requirements. [0003] In addition, the DC motor currently used in the indoor unit has only a few fixed speeds, and the problem of too large or too small air volume will also occur during tooling installation, or different modes can be manually adjusted to meet the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00F24F11/30
CPCF24F11/30F24F11/62F24F11/64F24F11/75F24F11/77F24F2110/00Y02B30/70
Inventor 胡知耀汪俊勇莫灼均朱金哲颜圣绿何彬荣曹勇何国军
Owner 珠海格力机电工程有限公司
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