Method and device for adjusting fresh air and return air in air conditioning system
An air-conditioning system and a technology for regulating devices, which are applied in the field of devices for adjusting the ratio of new return air of centralized air conditioners, can solve the problem of not considering the influence of the concentration of inhalable particulate matter in the return air of fresh air, increasing equipment investment costs, and operating loads of fans and heat exchanger load, increase the difficulty and investment of operation and maintenance, etc., to achieve the effect of reducing the content of inhalable particulate matter, easy to be widely used, easy to operate and recycle
Inactive Publication Date: 2017-01-25
CHONGQING UNIV
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Problems solved by technology
The ratio of fresh air and return air volume in most centralized air-conditioning systems currently in use has been determined in the design stage, and the total air supply volume can only be changed according to the difference in heat load, without considering the difference in the concentration of inhalable particulate matter in the fresh air and return air The influence of the quality, not to mention the change of the new return air ratio to improve the quality of the air supply
Some new air-conditioning systems one-sidedly pursue the quality of air supply, and use many purification methods and purification equipment in combination, ignoring the reasonable use of return air, which greatly increases equipment investment costs, fan operating load and heat exchanger load, and increases operating costs. Difficulty and investment in maintenance, not economical and energy-saving enough
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[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0023] The air-conditioning system fresh air return air adjustment device in this specific embodiment has a structure such as figure 1 and figure 2 As shown, it includes the return air duct 1 and the fresh air duct 2 and the corresponding return air fresh air ratio control device, and also includes a detection device arranged on the return air duct 1 and the fresh air duct 2. There are two identical bypass pipes on the air duct and the fresh air duct, and a particle collection mechanism is arranged in the middle of the two bypass pipes. The particle collection mechanism includes a half cylinder embedded in the opening of the lower surface of the bypass pipe Shaped lower half pipe 52, the lower half pipe 52 is made of ferromagnetic metal and a hoop 521 is fixed vertically upward in the middle, the diameter of the hoop matches the inner diameter of the bypass...
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The invention discloses a fresh air and return air adjusting device for air-conditioning systems. The fresh air and return air adjusting device comprises a return air pipeline, a fresh air pipeline and a corresponding return air and fresh air ratio control device. The fresh air and return air adjusting device is characterized by further comprising a detecting unit disposed on the return air pipeline and the fresh air pipeline, and the detecting unit comprises a bypass pipe, a lower half pipe, a PM2.5 adhesive film, an electromagnet, a tray, a balance lever, a position switch and the like. The invention further discloses a fresh air and return air adjusting method. According to the method, the fresh air and return air adjusting device is used to judge a difference of concentrations of particles in the return air pipeline and the fresh air pipeline, and air volumes of the return air pipeline and the fresh air pipeline are adjusted according to the difference. The fresh air and return air adjusting device and method has the advantages that the concentrations of absorbable particles in the fresh air pipeline and the return air pipeline in the air-conditioning system can be well detected and judged, the fresh air and return air ratio can be controlled according to a detection result, power consumption of the air-conditioning system is reduced, and indoor air quality is improved.
Description
technical field [0001] The invention relates to the technical field of air pollutant monitoring; in particular, it relates to a device and method capable of adjusting the ratio of new return air of a centralized air conditioner according to the relative quality of indoor and outdoor air. Background technique [0002] With the advancement of industrialization and the improvement of people's living standards, environmental issues, especially air quality issues, have increasingly attracted people's attention. At the same time, due to the continuous deterioration of air quality, air quality has been widely concerned, and the indoor air quality that people stay in for a long time is even more important. Among many pollutants, inhalable particulate matter is extremely harmful to human health, and it is of great significance to control the concentration of inhalable particulate matter in indoor air at a safe level. [0003] At present, central air-conditioning systems are required...
Claims
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IPC IPC(8): F24F11/02
CPCF24F11/30F24F11/83F24F11/89F24F2110/00F24F2110/64Y02B30/70
Inventor 串禾曹浩张雨崔玉琦苗彗鸿江春雨刘巍
Owner CHONGQING UNIV