CN210089057U - Energy-saving type full fresh air conditioning unit control system - Google Patents
Energy-saving type full fresh air conditioning unit control system Download PDFInfo
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- CN210089057U CN210089057U CN201920664824.7U CN201920664824U CN210089057U CN 210089057 U CN210089057 U CN 210089057U CN 201920664824 U CN201920664824 U CN 201920664824U CN 210089057 U CN210089057 U CN 210089057U
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Abstract
The utility model provides an energy-saving full fresh air conditioning unit control system, which comprises a machine body, an air inlet, an air treatment device and an air supply outlet, wherein the air inlet, the air treatment device and the air supply outlet are connected by an air circuit; the air inlet is positioned at one end of the machine body, the air processing device is positioned in the machine body, and the air supply outlet is positioned at the other end of the machine body; the air treatment device comprises a primary filter screen, a medium-efficiency filter screen, a primary preheating coil, a primary precooling coil, a water spraying chamber, a secondary cooling coil, a reheating coil, a fan chamber, a chemical filter section, a high-medium-efficiency filter screen and a high-efficiency filter screen which are arranged in the machine body from left to right in sequence; and the air inlet and the air supply outlet both comprise control valves for controlling the opening or closing of the air inlet and the air supply outlet. Through the utility model discloses to solve the fresh air conditioning unit that prior art exists and can not freely switch over the problem of different unit control mode according to the operating mode in different seasons.
Description
Technical Field
The utility model relates to a clean factory building production environment automatic control technical field, concretely relates to energy-saving full fresh air conditioning unit control system.
Background
With the aggravation of air pollution, various products of a fresh air system and an air purifier are continuously emerged, and a fresh air conditioning unit is air treatment equipment and can provide clean air meeting the temperature and humidity requirements; the fresh air meeting the temperature and humidity conditions is provided for the clean room through the treatment of dust removal, dehumidification (or humidification), temperature reduction (or heating) and the like of the wet air. However, the existing small fresh air handling unit, the air purifier and the indoor air conditioning system are unstable in control, and are prone to causing corresponding cold and heat source energy waste, and meanwhile, many fresh air handling units cannot freely switch different unit control modes according to working conditions in different seasons, so that the unit control modes are not flexible enough.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy-saving full fresh air conditioning unit control system to the fresh air conditioning unit who solves prior art existence does not can freely switch over the problem of different unit control methods according to the operating mode in different seasons.
In order to solve the technical problem, the utility model provides an energy-saving full fresh air conditioning unit control system, which comprises a machine body, an air inlet, an air treatment device and an air supply outlet, wherein the air inlet, the air treatment device and the air supply outlet are connected by an air circuit; the air inlet is positioned at one end of the machine body, the air processing device is positioned in the machine body, and the air supply outlet is positioned at the other end of the machine body; the air treatment device comprises a primary filter screen, a medium-efficiency filter screen, a primary preheating coil, a primary precooling coil, a water spraying chamber, a secondary cooling coil, a reheating coil, a fan chamber, a chemical filter section, a high-medium-efficiency filter screen and a high-efficiency filter screen which are arranged in the machine body from left to right in sequence; and the air inlet and the air supply outlet both comprise control valves for controlling the opening or closing of the air inlet and the air supply outlet.
And 2 spraying pumps are arranged in the water spraying chamber and used for humidifying air.
The fan chamber is internally provided with a variable frequency fan for adjusting the pressure of the outlet air.
The chemical filtering section consists of two chemical filtering sections.
The air supply outlet is provided with a temperature sensor.
The utility model discloses the beneficial effect who brings: (1) the fresh air conditioning unit of the utility model can freely switch different unit control modes according to different seasons under the premise of meeting the system stability and energy-saving requirements, and is convenient, flexible, simple and practical;
(2) the unit control mode is increased, more operation conditions are suitable, and the overall stability is enhanced;
(3) and the corresponding control strategy is changed, the use of cold and heat sources is reduced, and the energy is saved and the efficiency is high.
Drawings
Fig. 1 is a schematic structural diagram of a fresh air conditioning unit control system of the present invention.
Wherein, 1-air inlet, 2-primary filter screen, 3-intermediate filter screen, 4-primary preheating coil, 5-primary precooling coil, 6-water spray chamber and 2 spray pumps, 7-recooling coil, 8-reheating coil, 9-frequency conversion fan and fan chamber, 10-2 chemical filter sections, 11-high-intermediate filter screen, 12-high efficiency filter screen, 13-air supply outlet, and 14-machine body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The main structure of the fresh air conditioning unit is shown in fig. 1, and the specific working process is as follows: the wet air passes through the primary and intermediate effect filter screens to achieve the primary filtering and dust removing purpose; according to the initial temperature of the wet air entering the unit, a primary preheating or precooling coil is selected to be started, and the temperature of the wet air is increased or decreased; the water spray chamber and the 2 spray pumps humidify the wet air, and the start and the stop are selected according to different air humidity conditions, but in most cases, the humidifying pumps are started all the year round, and the wet air is washed with water to remove dust on the premise of humidification; the recooling coil pipe is used for dehumidifying the wet air to enable the moisture content in the air to reach a set value; the reheating coil pipe is used for controlling the temperature of the humid air so that the outlet air temperature reaches a set value; the variable frequency fan enables the air outlet pressure to meet the preset requirement; finally, the wet air passes through a chemical filtering section and a high-efficiency filtering section, so as to achieve the purposes of removing chemical elements and efficiently removing dust.
According to the characteristics of the temperature and the humidity of the outside air, the automatic control mode of the adjusting unit can be researched by combining three conditions of summer working conditions (high temperature and high humidity), winter working conditions (low temperature and low humidity) and transition season working conditions (high temperature and low humidity).
(1) Summer working condition (high temperature and high humidity)
In summer, outside air generally has high temperature and high humidity, and the wet air treatment process generally comprises the steps of outdoor air → surface cooling temperature reduction → water washing dust removal → recooling dehumidification → reheating temperature regulation → air supply, wherein the specific control mode is as follows:
the dehumidification control is required under the working condition, the working condition is divided into two coil pipes for processing a precooling coil pipe and a recooling coil pipe, the precooling coil pipe is controlled, the precooling coil pipe supplies water to the precooling coil pipe with 14 ℃ of backwater of 21 ℃, the temperature is set to be 18 ℃ in consideration of the heat exchange efficiency of the coil pipes, the temperature after precooling is taken as a control target, and the PID output controls the opening of a precooling. The pre-cooling coil mainly has the function of cooling, and partial dehumidification is realized when the dew point is higher than 18 ℃ for better dehumidification of the re-cooling coil.
And air supply dew point control, namely controlling the dew point set value to be 13.5 ℃ (adjustable) according to the measured value of a dew point temperature sensor of the air supply outlet as a control target, and controlling the opening degree of the recooling valve through PID output control. Controlling the air supply temperature, namely controlling the temperature set value to be 23 ℃ (adjustable) according to the air supply outlet temperature sensor as a control target, and controlling the opening degree of a reheating valve through PID output; the temperature of the air supply is controlled to prevent dew condensation.
(2) Winter conditions (Low temperature and low humidity)
In winter, the external air is generally low in temperature and humidity, and the wet air treatment process generally comprises the steps of outdoor air → surface heat temperature rise → water washing humidification → reheating temperature regulation → air supply, and the specific control mode is as follows:
under the working condition, the external air enthalpy value is less than the control enthalpy value, and preheating and humidifying treatment is needed. Because the moisture content of the outdoor air is less than the set moisture content, the humidifying pump is started, the enthalpy sensor is used as a control target after preheating, the control enthalpy is set to be 39kj/kg (adjustable), PID (proportion integration differentiation) outputs and controls the opening of the preheating valve, the enthalpy after preheating is ensured, and the washing and humidifying can meet the dew point requirement. And controlling the air supply temperature, namely controlling the temperature set value to be 23 ℃ (adjustable) according to the air supply outlet temperature sensor as a control target, and controlling the opening degree of a reheating valve through PID output.
(3) Working condition of transition season (high temperature and low humidity)
In the transition season, the outside air is generally high in temperature and low in humidity, and the humid air treatment process generally comprises the steps of outdoor air → water washing and humidification → recooling and dehumidification → reheating and temperature regulation → air supply, wherein the specific control mode is as follows:
the moisture content of the external air in the region is smaller than the set moisture content value, humidification control is needed, the washing quantitative humidifier is not adjustable, and after washing, cooling and dehumidification control is needed. And starting the dehumidifying coil, controlling the air supply dew point, controlling the dew point set value to be 13.5 ℃ (adjustable) by taking the measured value of the dew point temperature sensor of the air supply outlet as a control target, and controlling the opening degree of the recooling valve by PID (proportion integration differentiation) output.
And controlling the air supply temperature, namely controlling the temperature set value to be 23 ℃ (adjustable) according to the air supply outlet temperature sensor as a control target, and controlling the opening degree of a reheating valve through PID output.
To sum up, the utility model discloses a fresh air conditioning unit has following advantage: (1) on the premise of meeting the requirements of system stability and energy conservation, different unit control modes are freely switched according to working conditions in different seasons, and the system is convenient, flexible, simple and practical;
(2) the unit control mode is increased, more operation conditions are suitable, and the overall stability is enhanced;
(3) and the corresponding control strategy is changed, the use of cold and heat sources is reduced, and the energy is saved and the efficiency is high.
The above description is only an example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (5)
1. An energy-saving full fresh air conditioning unit control system is characterized by comprising a machine body (14), an air inlet (1), an air treatment device and an air supply outlet (13), wherein the air inlet (1), the air treatment device and the air supply outlet (13) are connected in an air path; the air inlet (1) is positioned at one end of the machine body (14), the air treatment device is positioned in the machine body (14), and the air supply outlet (13) is positioned at the other end of the machine body (14); the air treatment device comprises a primary filter screen (2), a secondary filter screen (3), a primary preheating coil (4), a primary precooling coil (5), a water spraying chamber (6), a secondary cooling coil (7), a reheating coil (8), a fan chamber (9), a chemical filtering section (10), a high-medium efficiency filter screen (11) and a high-efficiency filter screen (12) which are sequentially arranged in a machine body (14) from left to right; the air inlet (1) and the air supply outlet (13) both comprise control valves for controlling the opening or closing of the air inlet and the air supply outlet.
2. The energy-saving full fresh air conditioning unit control system according to claim 1, wherein 2 spray pumps are arranged in the water spray chamber (6) for humidifying air.
3. The energy-saving type all-fresh-air conditioning unit control system as claimed in claim 1, wherein a variable frequency fan is arranged in the fan chamber (9) for adjusting the pressure of outlet air.
4. Energy-saving full-fresh-air conditioning unit control system according to claim 1, characterized in that the chemical filtering section (10) consists of two chemical filtering sections.
5. Energy-saving full-fresh-air conditioning unit control system according to claim 1, characterized in that said air supply outlet (13) is provided with a temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920664824.7U CN210089057U (en) | 2019-05-09 | 2019-05-09 | Energy-saving type full fresh air conditioning unit control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920664824.7U CN210089057U (en) | 2019-05-09 | 2019-05-09 | Energy-saving type full fresh air conditioning unit control system |
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| Publication Number | Publication Date |
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| CN210089057U true CN210089057U (en) | 2020-02-18 |
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| CN201920664824.7U Active CN210089057U (en) | 2019-05-09 | 2019-05-09 | Energy-saving type full fresh air conditioning unit control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110831A (en) * | 2021-11-18 | 2022-03-01 | 惠瑞净化科技(江苏)有限公司 | Energy-saving full fresh air conditioning unit control system for lithium battery clean room |
| CN115013899A (en) * | 2022-06-06 | 2022-09-06 | 江苏晋成空调工程有限公司 | Air conditioning unit with good spraying and humidifying effects |
-
2019
- 2019-05-09 CN CN201920664824.7U patent/CN210089057U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110831A (en) * | 2021-11-18 | 2022-03-01 | 惠瑞净化科技(江苏)有限公司 | Energy-saving full fresh air conditioning unit control system for lithium battery clean room |
| CN115013899A (en) * | 2022-06-06 | 2022-09-06 | 江苏晋成空调工程有限公司 | Air conditioning unit with good spraying and humidifying effects |
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