Unlock instant, AI-driven research and patent intelligence for your innovation.

A fuzzy control device and control method for variable voltage of central air-conditioning electrostatic dust removal

A fuzzy control and electrostatic precipitator technology, applied in the control input involving air characteristics, space heating and ventilation control input, air conditioning system, etc., can solve the problems of immature technology, reduced use effect, excessive ozone, etc., to achieve voltage control The method is advanced and reasonable, the effect of reducing the dust removal voltage and reducing the ozone concentration at the outlet

Active Publication Date: 2020-06-19
中天绿地环保科技(西安)有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Electrostatic dust removal technology is an effective means to remove PM2.5 and other harmful particles in the air. In recent years, people have paid more and more attention to it. However, due to the immature technology, there are many disadvantages when using it.
In particular, the dust removal voltage of electrostatic precipitators for air conditioners is mostly selected based on experience, and the voltage value is fixed and will not change with the change of operating conditions. Spark discharge, corona occlusion, and ozone exceeding the standard are likely to occur during work, which reduces the actual use. Effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A fuzzy control device and control method for variable voltage of central air-conditioning electrostatic dust removal
  • A fuzzy control device and control method for variable voltage of central air-conditioning electrostatic dust removal
  • A fuzzy control device and control method for variable voltage of central air-conditioning electrostatic dust removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] The invention consists of six modules: power module I, controller and host computer module II, indoor environment monitoring module III, variable frequency fan module IV, high-voltage electrostatic dust removal module V and air supply parameter monitoring module VI. Power module I is composed of 220V / 380V AC power supply and switching power supply; controller and host computer module II is composed of Siemens PLC controller and Kingview host computer; indoor environment monitoring module III is composed of ozone sensor, CO 2 The sensor and indoor PM2.5 sensor are composed; the variable frequency fan module IV is composed of a frequency converter and a variable frequency fan; the high-voltage electrostatic precipitator module V is composed of an adjustable high-voltage power supply and an electrostatic precipitator; the air supply parameter monitoring module VI is composed of a PM2.5 sensor before dust removal , After dust removal, it is composed of PM2.5 sensor, temperat...

Embodiment 2

[0097] Under normal circumstances, the central air-conditioning fresh air system, on the one hand, changes the fresh air flow by changing the fan speed by the variable frequency fan, so as to achieve the purpose of controlling the carbon dioxide concentration in the building, and the control target of the carbon dioxide concentration is below 800PPM; on the other hand, by adjusting The voltage of the electrostatic precipitator is to achieve the purpose of controlling the PM2.5 concentration at the outlet of the electrostatic precipitator. The control target of the PM2.5 concentration at the outlet of the electrostatic precipitator is below 50PPM.

[0098] In some cases, when the frequency of the fan is 35Hz, the indoor carbon dioxide concentration is 1100PPM. At this time, the carbon dioxide concentration exceeds the standard. In order to control the carbon dioxide concentration below 800PPM, the frequency of the fan is increased to 45Hz. The concentration is 780PPM, reaching t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a central air-conditioning electrostatic precipitation variable voltage fuzzy control device and control method. The method comprises the steps that the indoor PM2.5 concentration value is collected; the PM2.5 concentration preset value is compared with the collected indoor PM2.5 concentration value, calculation is carried out to obtain the PM2.5 concentration deviation, and calculation is carried out to obtain the deviation change rate; the PM2.5 concentration deviation and the deviation change rate obtained in the step 2 are used as the input of a PM2.5 fuzzy controller, and the electrostatic precipitating voltage is used as the output of the PM2.5 fuzzy controller; and input fuzzification is firstly carried out in the PM2.5 fuzzy controller, the voltage fuzzy output is obtained through fuzzy adjudication, and then defuzzification is carried out to obtain the actual output of the electrostatic precipitating voltage. By means of the central air-conditioning electrostatic precipitation variable voltage fuzzy control device and control method, the voltage change can be controlled along with the working condition, the problems of spark discharge, corona occlusion and ozone standard exceeding can be eliminated, and the actual use effect is improved.

Description

technical field [0001] The invention belongs to the technical field of electrostatic dust removal for air intake of central air conditioners, and in particular relates to a fuzzy control device and control method for variable voltage of electrostatic dust removal of central air conditioners. Background technique [0002] At present, my country's economy is in a period of extensive and high-speed growth. The excessive emission of factory exhaust gas, the increase of vehicle exhaust, the burning of rural straw and coal-fired heating in winter have led to the increasingly serious problem of smog in our country. An important indicator to measure the severity of smog is the concentration of PM2.5 particulate matter in the air. PM2.5 particulate matter refers to dust particles with a particle size less than or equal to 2.5 μm. In winter, the outdoor PM2.5 concentration in major cities often exceeds the table. Citizens must wear masks when traveling. Short-term exposure to severe s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F24F3/16F24F11/61F24F11/64F24F11/77F24F110/10F24F110/20F24F110/30F24F110/64F24F110/70F24F110/74
CPCF24F11/61F24F11/64F24F11/77F24F2110/10F24F2110/20F24F2110/30F24F2110/64F24F2110/70F24F2110/74F24F8/10F24F8/192Y02B30/70
Inventor 王军乔亦凡刘铭
Owner 中天绿地环保科技(西安)有限公司