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Control method of ceiling type fresh air unit

A technology of a fresh air unit and a control method, applied in the direction of mechanical equipment, etc., can solve the problems of indoor suffocation, poor indoor air quality, easy to cause discomfort and spread of diseases, etc.

Active Publication Date: 2019-05-10
北京三五二环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nowadays, the utilization rate of air conditioners in public places and homes is getting higher and higher. People are in a closed environment for a long time. Due to the lack of necessary air circulation, the indoor air quality is very poor, which can easily cause discomfort and spread of diseases. Although some families will use it Air purifier products, but because the air purifier uses internal circulation to purify the indoor air and the pollutants leaked from the outside through the doors and windows, but after a long time, there will be stuffy indoors, so measures must be taken to clean the air. Exchange, introduce outdoor fresh air under the condition of not opening the window, and eliminate indoor turbid and harmful gases

Method used

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  • Control method of ceiling type fresh air unit
  • Control method of ceiling type fresh air unit
  • Control method of ceiling type fresh air unit

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0085] The filters with the same type and size and the same service life are installed in the two ceiling-type fresh air fans. The theoretical cumulative life of the filter is 5000 hours. The control method of the unit is calculated, that is, the remaining life = cumulative life - CADR value / air volume coefficient * (corresponding coefficient of PM2.5 concentration) * operating time; the remaining life of the filter in room 2 is the difference between the theoretical cumulative life and the actual working time Poor; in the case of good air quality, that is, when the average PM2.5 concentration is 10μg / m 3 At this time, the filter still has a remaining life of 3000+ hours after working for 5000 hours; in the case of poor air quality, that is, when the average PM2.5 concentration is 100μg / m 3 , the filter will reach its service life after working for about 2600 hours and needs to be replaced;

[0086] When the remaining life of the filter in room 1 is 10 hours, check the filt...

experiment example 2

[0089] Experimental Example 2: Two ceiling-mounted fresh air fans are running in summer, the outdoor temperature in summer is 35°C, the indoor temperature is 26°C, the outdoor humidity is 65%RH, and the indoor humidity is 50%RH; the situation in winter is similar.

[0090] The total heat exchange components are installed in the two ceiling-mounted fresh air fans, and the outdoor temperature T is considered comprehensively in room 1. out , indoor air supply outlet temperature T in and indoor return air temperature T cr To judge whether to open the full heat exchange component, that is, T in / |T out -T cr |=ξ, when ξ is less than 3, the total heat exchange component needs to be turned on; in room 2, only according to the outdoor temperature T out and indoor return air temperature T cr Determine whether to turn on the full heat exchange component, monitor the average temperature in room 1 and room 2 in real time, and get as follows Figure 5 The whole-day temperature change...

experiment example 3

[0092] The ceiling-type fresh air fan in room 1 is controlled by the control method provided by the present invention, that is, it is controlled after weighted summation; the ceiling-type fresh air fan in room 2 is controlled by a traditional control method; on this basis, real-time monitoring of the two Concentration of pollutants in one room, get the change curve of pollutant concentration in two rooms, such as Figure 6 As shown in , the abscissa in this figure represents time, and the ordinate represents the concentration of pollutants. The concentration of pollutants is a weighted average of various pollutants without specific units. The concentration of pollutants; it can be seen from the figure that the concentration of pollutants in Room 1 fluctuates steadily, the concentration of pollutants does not rise in stages, and the overall concentration is low; although the concentration of pollutants in Room 2 is sometimes low, However, the overall concentration fluctuates gr...

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Abstract

The invention discloses a control method of a ceiling type fresh air unit. In the method, according to the big data simulation of the internet of things mode, according to different combinations of the specifications, models and performance of filters, the lifetime prompting of a filter component are carried out by data combination with a sensor component; by the detection for the indoor and outdoor environmental factor parameters through the combination of the sensor component and outdoor atmospheric data released by the state, whether the fresh air unit opens the full heat exchange module and the operation status and mode of the fresh air unit are comprehensive judged. The effect of energy saving is reached, and meanwhile the fresh air unit can be effectively controlled to be in an idealoperation status.

Description

technical field [0001] This patent relates to the field of a fresh air machine, in particular to a control method of a fresh air unit and the fresh air machine. Background technique [0002] Nowadays, the utilization rate of air conditioners in public places and homes is getting higher and higher. People are in a closed environment for a long time. Due to the lack of necessary air circulation, the indoor air quality is very poor, which can easily cause discomfort and spread of diseases. Although some families will use it Air purifier products, but because the air purifier uses internal circulation to purify the indoor air and the pollutants leaked from the outside through the doors and windows, but after a long time, there will be stuffy indoors, so measures must be taken to clean the air. Exchange, introduce outdoor fresh air under the condition of not opening the window, and eliminate indoor turbid and harmful gases. At present, fresh air blower systems have been develope...

Claims

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Application Information

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IPC IPC(8): F24F11/39F24F11/52F24F11/64F24F11/70F24F11/58F24F11/46
Inventor 李劲松张燚王立冲
Owner 北京三五二环保科技有限公司
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