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Control method and device of fresh air system and fresh air system

A technology for a fresh air system and a control method, which is applied in heating and ventilation control systems, heating and ventilation safety systems, and control inputs involving air characteristics, etc., can solve problems such as high cost, easy mildew of ventilation ducts, and complex structure.

Active Publication Date: 2019-04-09
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The total heat exchanger cools / heats the fresh air by using the waste cold / waste heat exhausted to the outdoor air, but the fresh air system using the total heat exchanger has a complex structure and high cost, and the fresh air system without the total heat exchanger cannot Fresh air entering the room for cooling
In addition, when the humidity in the ventilation duct of the fresh air system is high, mildew is prone to occur in the ventilation duct of the fresh air system

Method used

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  • Control method and device of fresh air system and fresh air system
  • Control method and device of fresh air system and fresh air system
  • Control method and device of fresh air system and fresh air system

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Embodiment Construction

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0055] The control method, device and fresh air system of the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0056] figure 1 is a structural diagram of a fresh air system according to an embodiment of the present invention, such as figure 1 As shown, the fresh air system includes: an air inlet device 13, which is used to extract outdoor air into the ventilation duct of the fresh air system; an air outlet device 14, which is used to send the fresh air processed by the f...

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Abstract

The invention provides a control method and device of a fresh air system and the fresh air system. The control method of the fresh air system comprises the following steps: judging whether the concentration of indoor carbon dioxide is less than a preset concentration threshold value; if the second humidity is equal to or greater than the sum of the first humidity and the preset difference humidity, controlling a cooling water spraying device to stop spraying, turning on a fan, and setting the gear when the fan is turned on as the set gear; if not, turning on the fan and determining the gear when the fan is started according to the concentration of carbon dioxide; according to the gear when the fan is turned on, acquiring the cooling load required for fresh air cooling of the fresh air system; and controlling the cooling water spraying device according to the cooling load and the temperature of the cooling water. The control method and device of the fresh air system and the fresh air system of the invention can avoid the phenomenon that a large amount of water mist adheres to the bottom of the ventilation duct, and can prevent mildew in the ventilation pipe. The temperature of freshair supply can be reduced accurately. At the same time, the method has the advantages of simple realization and low cost.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a control method and device for a fresh air system and the fresh air system. Background technique [0002] With the improvement of people's living standards, the demand for fresh air is becoming stronger and stronger. [0003] In the related art, the fresh air system usually uses a total heat exchanger or a cooling water spray device to cool the fresh air entering the room. The total heat exchanger cools / heats the fresh air by using the waste cold / waste heat exhausted to the outdoor air, but the fresh air system using the total heat exchanger has a complex structure and high cost, and the fresh air system without the total heat exchanger cannot The fresh air entering the room is cooled. In addition, when the humidity in the ventilation duct of the fresh air system is high, mildew is prone to occur in the ventilation duct of the fresh air system. Contents of the ...

Claims

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Application Information

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IPC IPC(8): F24F11/00F24F11/89F24F110/70F24F110/20F24F110/10F24F110/12
CPCF24F11/00F24F11/89F24F2110/10F24F2110/12F24F2110/20F24F2110/70
Inventor 曹磊
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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