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A fresh air system control method with fire protection function

A technology of a fresh air system and a control method, applied in the field of air purification, can solve problems such as increasing the spread of fire, and achieve the effects of strong practicability, low equipment renovation cost, and suppression of the spread of fire

Active Publication Date: 2021-05-04
TIANJIN FIFTH SEASON ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the above three working methods, in case of fire or other abnormal conditions, the machinery and equipment will continuously inject fresh air into the room, increasing the spread of the fire.

Method used

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  • A fresh air system control method with fire protection function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Take the fan automatic mode as an example

[0024] There are 2 fans in total (one fresh air fan and one exhaust fan), with 3 levels of air volume control, according to the air quality conditions (PM2.5 and CO 2 and TVOC concentration) to automatically adjust the air volume;

[0025] High-grade: when PM2.5≥75ug / m 3 or CO 2 When ≥1150ppm, the fan runs at high speed;

[0026] Mid-range: when 55≤PM2.53 or 950≤CO 2 When <1150ppm or TVOC=0.6, the fan operates in mid-range;

[0027] Low grade: when 35≤PM2.53 or 600≤CO 2 <950ppm or TVOC=0.4, the fan runs at low gear;

[0028] Shutdown: when PM2.53 and CO 2 When <600ppm and TVOC=0.1, the fresh air fan and exhaust fan stop running;

[0029] Firefighting: when PM2.5>500ug / m 3 Cut off the fresh air input and increase the exhaust power to the maximum power.

[0030] ① When PM2.5, TVOC and CO 2 When any value of the real-time detection data reaches the high-end concentration range, the fan directly completes the up-shift o...

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Abstract

The invention relates to a fresh air system control method with fire protection function. The PM2.5 sensor and / or CO in the fresh air system 2 Set the fire threshold on the sensor, when PM2.5 and / or CO in the air are detected 2 When the concentration reaches the fire threshold value, close the fresh air inlet valve and increase the exhaust power at the same time. The present invention utilizes the PM2.5 sensor and / or CO in the traditional fresh air control system 2 The sensor, by setting the threshold, endows it with a fire protection function, without adding other sensors, the cost of equipment transformation is low, and the practicability is strong.

Description

technical field [0001] The invention belongs to the field of air purification, and relates to a fresh air system, in particular to a fresh air system control method with a fire-fighting function. Background technique [0002] The fresh air system control technology is to filter the outdoor air through primary filter, high-efficiency filter, electrostatic precipitator and activated carbon adsorption to filter out the pm10, pm2.5 particles and other harmful substances in the outdoor oxygen-enriched air. indoor. At the same time, indoor dirty, high CO 2 Concentrated air containing harmful substances such as formaldehyde is discharged to the outside. The sensor data is collected and the air volume is adjusted through the microcontroller, which plays the role of continuous exchange of indoor and outdoor air. With the development of Internet of Things technology, this fresh air control system can be easily connected to the system platform of smart home. At the same time, this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F7/007F24F11/89F24F11/64F24F11/58G08B17/10F24F110/50
CPCF24F7/007F24F11/58F24F11/64F24F11/89F24F2110/50G08B17/10
Inventor 孙树忠赵洪民
Owner TIANJIN FIFTH SEASON ENVIRONMENTAL TECH CO LTD