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CN-224201850-U - VAV air conditioning system based on temperature and humidity control technology

CN224201850UCN 224201850 UCN224201850 UCN 224201850UCN-224201850-U

Abstract

The utility model discloses a variable air-conditioning (VAV) system based on a temperature and humidity control technology, which comprises an intelligent fresh air terminal, an intelligent air supply terminal, a digital fresh air unit and a digital air-conditioning unit, wherein an air outlet side of the digital fresh air unit is connected with a fresh air main pipe, the fresh air main pipe is connected with a plurality of intelligent fresh air terminals through a fresh air branch pipe, the digital air-conditioning unit is provided with an air return valve and a fresh air valve, the fresh air valve is connected with the fresh air main pipe, the air outlet side of the digital air-conditioning unit is connected with the intelligent air supply terminal through an air supply pipe, the conventional VAV system in which fresh air and return air are jointly processed by one device is divided into two independent systems, namely, the fresh air is processed by the digital fresh air unit, and circulating air is processed by the digital air-conditioning unit.

Inventors

  • WANG CONG
  • HOU LINGYUN

Assignees

  • 广东同方瑞风节能科技股份有限公司

Dates

Publication Date
20260505
Application Date
20250515

Claims (10)

  1. 1. A van air conditioning system based on temperature and humidity control technology, comprising: an intelligent fresh air terminal (5) is provided with a plurality of intelligent fresh air terminals; an intelligent air supply terminal (4) provided with a plurality of air supply terminals; the digital fresh air unit (1) is provided with at least one, the air outlet side of the digital fresh air unit (1) is connected with a fresh air main pipe, and the fresh air main pipe is connected with a plurality of intelligent fresh air terminals (5) through fresh air branch pipes; The digital air conditioning unit (2) is provided with at least one, an air return valve (11) and a fresh air valve (12) are arranged on the air inlet side of the digital air conditioning unit (2), the fresh air valve (12) is connected with a fresh air main pipe, the air return valve (11) is connected with an air return pipe, and the air outlet side of the digital air conditioning unit (2) is connected with a plurality of intelligent air supply terminals (4) through an air supply pipe.
  2. 2. The VAV air conditioning system of claim 1, wherein: The digital fresh air unit (1) comprises a fresh air fan for adjusting the supply amount of fresh air, a fresh air treatment module for carrying out air purification treatment on the fresh air and a fresh air heat and humidity treatment module for carrying out heat and humidity treatment on the fresh air.
  3. 3. The VAV air conditioning system of claim 2, wherein: The digital air conditioning unit (2) comprises an air conditioning fan for adjusting the supply quantity of air supply, an air conditioning air treatment module for performing air purification treatment on circulating air, and an air conditioning heat and humidity treatment module for performing heat and humidity treatment on the circulating air.
  4. 4. A VAV air conditioning system according to claim 3, characterized in that: The intelligent fresh air terminal also comprises a digital air supply unit (3), wherein the digital air supply unit (3) is connected between the fresh air main pipe and the intelligent fresh air terminals (5), and the digital air supply unit (3) comprises an air supply fan for adjusting the air supply quantity.
  5. 5. The VAV air conditioning system of claim 4, wherein: The digital air supply unit (3) further comprises an air supply heat-humidity treatment module for heat-humidity treatment of air supply.
  6. 6. The VAV air conditioning system of claim 4, wherein: the intelligent control system comprises a fresh air unit control system (6), an air supply unit control system (7) and an air conditioning unit control system (8); The fresh air unit control system (6) comprises a fresh air unit intelligent control cabinet, and a first air supply pressure sensor, a first air inlet temperature and humidity sensor, a first air supply temperature and humidity sensor and an air quality sensor which are connected with the fresh air unit intelligent control cabinet at the same time, wherein the fresh air unit intelligent control cabinet is respectively connected with the fresh air fan, the fresh air processing module and the fresh air heat and humidity processing module; The air conditioning unit control system (8) comprises an air conditioning unit intelligent control cabinet, a second air supply pressure sensor, a second air inlet temperature sensor and a second air supply temperature sensor which are connected with the air conditioning unit intelligent control cabinet at the same time, wherein the air conditioning unit intelligent control cabinet is respectively connected with the air conditioning fan and the air conditioning heat and humidity treatment module; The air supply unit control system (7) comprises an air supply unit controller and an air pipe pressure sensor connected with the air supply unit controller, and the air supply unit controller is connected with the air supply fan.
  7. 7. The VAV air conditioning system of claim 1, wherein: the intelligent fresh air terminal (5) and the intelligent air supply terminal (4) respectively comprise an air speed sensor and an air quantity adjusting mechanism.
  8. 8. The VAV air conditioning system of claim 1, wherein: The intelligent fresh air terminal (5) and the intelligent air supply terminal (4) respectively comprise an air speed sensor and a terminal fan.
  9. 9. A VAV air conditioning system according to any of claims 7 or 8, characterized in that: The intelligent terminal control system comprises an intelligent terminal control system (9), wherein the intelligent terminal control system (9) comprises a terminal controller and a sensor group connected with the terminal controller.
  10. 10. The VAV air conditioning system of claim 9, wherein: The sensor group comprises one or more of a VOC sensor, a CO 2 sensor, a temperature and humidity sensor, a PM2.5 sensor and a differential pressure sensor.

Description

VAV air conditioning system based on temperature and humidity control technology Technical Field The utility model relates to the technical field of application of all-air conditioning systems in various buildings, in particular to a VAV air conditioning system based on a temperature and humidity control technology. Background The VAV air conditioning system is an air conditioning system that adjusts indoor temperature by changing the amount of air delivered. Different from the fixed air volume system, the VAV air conditioning system can automatically adjust the air volume according to the change of the indoor load, thereby realizing the balance of energy conservation and comfort. The VAV air conditioning system is widely applied to large-scale buildings such as office buildings, markets, hotels and the like due to the characteristics of energy conservation, high efficiency, ‌ flexible control and strong ‌ adaptability, and is particularly suitable for places with large cold and hot load differences and need partition control. However, when the indoor humidity load is changed greatly and the indoor air quality is required to be high, the fresh air quantity is required to be fully ensured, the inherent defects are revealed to be very attractive and difficult to be qualified. The mode of the prior VAV air conditioning system multi-air conditioning equipment in the civil public building is two, namely, the air conditioning unit automatically takes fresh air, namely, the fresh air is introduced from the outside and is treated together with return air by the air conditioning unit and then is sent out by the tail end air supply device, and the fresh air is sent into the air conditioning unit and is treated together with return air by the air conditioning unit and then is sent out by the tail end air supply device, so that the prior VAV air conditioning system has poor regulation performance for the working area corresponding to the tail end of air supply, and cannot realize the omnibearing control of temperature, humidity and air quality. Disclosure of utility model The utility model aims to provide a VAV air conditioning system based on temperature and humidity control technology, which solves one or more technical problems in the prior art and at least provides a beneficial selection or creation condition. The technical scheme adopted for solving the technical problems is as follows: the utility model provides a VAV air conditioning system based on temperature and humidity control technology, which comprises: The intelligent fresh air terminal is provided with a plurality of intelligent fresh air terminals; the intelligent air supply terminal is provided with a plurality of air supply terminals; The digital fresh air unit is provided with at least one, the air outlet side of the digital fresh air unit is connected with a fresh air main pipe, and the fresh air main pipe is connected with a plurality of intelligent fresh air terminals through fresh air branch pipes; The digital air conditioning unit is provided with at least one, an air inlet side of the digital air conditioning unit is provided with an air return valve and a fresh air valve, the fresh air valve is connected with a fresh air main pipe, the air return valve is connected with an air return pipe, and an air outlet side of the digital air conditioning unit is connected with a plurality of intelligent air supply terminals through an air supply pipe. The VAV air conditioning system has the beneficial effects that: The utility model divides the conventional VAV system with fresh air and return air jointly processed by one device into two independent systems, namely, the fresh air is processed by a digital fresh air unit and the circulating air is processed by a digital air conditioning unit, one digital fresh air unit corresponds to one digital air conditioning unit or one digital fresh air unit corresponds to a plurality of digital air conditioning units, when the novel VAV system is used, the digital fresh air unit collects and processes the fresh air intensively, and then the fresh air is conveyed to each layer or partition by a fresh air main pipe, one part of the fresh air is conveyed to a working area needing humidity control and air quality control by each intelligent fresh air terminal, the other part of the fresh air enters the working area of each open space after the digital air conditioning unit and the return air are processed by the digital air conditioning unit, the intelligent fresh air terminal is arranged on a fresh air branch pipe of the working area and is responsible for fresh air volume adjustment, and the intelligent air supply terminal is arranged on a supply pipe of the working area and is responsible for supplying air from the digital air conditioning unit to each working area as required, so that the VAV air conditioning system has good adjusting performance and realizes the omnibearing control of temperature, humidity and air