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Air volume control method of ventilation system

A technology for air volume control and ventilation system, which is applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc. The effect of pollution

Inactive Publication Date: 2008-11-12
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, there is following problem in the ventilation system air volume control method of this prior art: because this ventilation system only according to CO 2 The absolute value of the concentration controls the air volume of the air supply fan and exhaust fan in 5 levels, but when the CO 2 There is no corresponding countermeasure when the concentration changes rapidly
That is, when the CO 2 When the concentration increases sharply and the indoor air quality deteriorates rapidly, only according to the CO 2 It is difficult to maintain the cleanliness of the room if the concentration is used to control the air volume
This is because when changing the air, the main consideration is to reduce the load of the air conditioner, but not the cleanliness of the room.

Method used

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  • Air volume control method of ventilation system
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  • Air volume control method of ventilation system

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Embodiment Construction

[0018] The present invention simultaneously uses CO 2 Concentration value and CO 2 The concentration variation is used as the air volume control factor. From Figure 4 From the fuzzy factor function table in , it can be seen that CO 2 Concentration value, CO 2 The relationship between the concentration change and the air volume. When CO 2 concentration is low while CO 2 If the concentration change is small, it can be judged that the room is clean and the pollution in the room has not increased sharply, so the air volume is controlled to be weak. When CO 2 concentration is low while CO 2 When the concentration change is large, it can be judged that the current indoor pollution degree is not high, but the pollution increases sharply, so the air volume is controlled as stroke. When CO 2 Concentration is medium or high while CO 2 When the concentration change is large, it can be judged that the current indoor pollution degree is high, and the pollution increases sharply...

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Abstract

The air quantity control method of air exchange system includes the following four stages: stage of detecting out current CO2 concentration CO2 concentration variable quantity in unit time; stage of comparing the detected CO2 concentration value with reference concentration divided into several grades so as to judge the CO2 concentration extent; stage of comparing the solved CO2 concentration variable quantity with reference variable quantity divided into several grades so as to judge CO2 concentration variable quantity extent; and stage of utilizing CO2 concentration and CO2 concentration variable quantity to control output air quantity of air supply fan and exhaust fan.

Description

technical field [0001] The invention relates to an air conditioning device, in particular to an air volume control method of a ventilation system which can change the air volume of a fan according to the sharp change of the carbon dioxide concentration to improve the ventilation efficiency. Background technique [0002] Air conditioning devices include air conditioners and ventilation systems. Generally speaking, an air conditioner is composed of a mechanical device that can form a circular closed loop and use the heat exchange between the heat exchange medium that has undergone an entropy change process and the surrounding air to cool / heat the indoor space, including cooling in summer. Cooling / heating devices such as air conditioners for indoor hot air and heaters for heating indoor cold air in winter. Air conditioners with the above functions are generally used together with a ventilation system that can be inserted into a groove formed on the roof of a building, and this...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/02
Inventor 廉宽镐
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD