Fresh air system and control method of fresh air system

CN112484207BActive Publication Date: 2025-01-10FOSHAN SHUNDE NISERA TECH CO LTD
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Patent Information

Application Number
CN201910863362.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-09-12
Publication Date
2025-01-10
Estimated Expiration
2039-09-12

AI Technical Summary

Technical Problem

When using a fresh air system in northern China in winter, when the outdoor temperature is lower than -0℃, the pipelines of the fresh air system are prone to condensation problems, and the existing PTC heaters cannot effectively solve this problem.

Method used

By setting up an exhaust fan in the fresh air system, turning off the fresh air fan, starting the exhaust fan to form a negative pressure, using external air pressure to introduce outdoor air into the room through the door gap or wall air outlet, thereby avoiding condensation of the fresh air duct and simultaneously stopping The air valve control and filtering device ensures air quality and system sealing.

Benefits of technology

When the outdoor temperature is below -0℃, the fresh air system can effectively avoid condensation of pipes, simplify the structure, extend the service life of the fresh air fan, and ensure indoor air quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a fresh air system and a control method for a fresh air system. The fresh air system comprises: a fresh air duct, which is used to deliver outdoor air into the room, and is provided with a fresh air fan and a first air stop valve; an exhaust duct, which is used to discharge indoor air to the outside, and is provided with an exhaust fan; a first duct, one end of which is connected to the air inlet side of the exhaust fan; a second duct, one end of which is connected to the other end of the first duct, and the other end of which is used to connect to the room, and is provided with a fourth air stop valve. When the indoor air meets any of the following conditions, the first air stop valve and the fresh air fan are closed, and the exhaust fan is started: (1) PM2.5 of the indoor air is greater than or equal to 300μg / m 3 ; (2) The mass change of carbon dioxide in indoor air is greater than or equal to 1500ppm; (3) The temperature of indoor air is less than or equal to -10℃ and greater than or equal to -40℃; (4) The humidity of indoor air is greater than or equal to 65%. This design can effectively avoid condensation in the duct when providing fresh air.
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Citation Information

Patent Citations

  • Intelligent floor type fresh air machine

    CN204478380U

  • Fresh air system

    CN211146811U

  • Sealing fan device and air conditioning facility using it

    JP2004271092A

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    KR101193222B1

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