A fresh air air conditioning unit control device, method, system and electronic equipment

Abstract

The application discloses a fresh air air conditioning unit control device, method and system and electronic equipment, and relates to the fresh air air conditioning unit control field. Temperature sensors and humidity sensors are arranged between a fresh air valve and a primary filter, between a heater and a primary surface cooler, between the primary surface cooler and a humidifier, between the humidifier and a secondary surface cooler, between the secondary surface cooler and a reheater, and between the reheater and a supply fan of the fresh air air conditioning unit. Temperature sensors are arranged on water supply and return pipelines of the heater, the primary surface cooler, the secondary surface cooler and the reheater. An air volume sensor is arranged after the supply fan. A micro pressure difference sensor is arranged in a clean area. A MAU control module controls the fresh air air conditioning unit according to data collected by the multiple temperature sensors, the multiple humidity sensors, the air volume sensor and the micro pressure difference sensor. The application improves the control precision of the fresh air air conditioning unit.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fresh air conditioning unit control, and particularly to a fresh air conditioning unit control device, method, system and electronic equipment. BACKGROUND

[0002] The clean workshop has a high accuracy requirement on the temperature and humidity in the clean area. Once the temperature and humidity of the clean area exceed the boundary requirement of the production process, it may cause the product to be unqualified, thereby causing great loss to the production enterprise. Therefore, when the outdoor temperature and humidity change, the heater, the surface cooler and the like of the fresh air conditioning unit need to be adjusted in time to meet the process requirement of the clean workshop. If the manual adjustment method is adopted, each device needs to be adjusted in sequence, and the adjustment process highly depends on the experience of the workers to realize accurate adjustment. SUMMARY

[0003] The purpose of the present application is to provide a fresh air conditioning unit control device, method, system and electronic equipment to improve the control accuracy of the fresh air conditioning unit.

[0004] To achieve the above purpose, the present application provides the following solutions.

[0005] A fresh air conditioning unit control device, comprising: a fresh air conditioning unit, a plurality of temperature sensors, a plurality of humidity sensors, an air volume sensor, a micro differential pressure sensor and a MAU control module; the fresh air conditioning unit, the plurality of temperature sensors, the plurality of humidity sensors, the air volume sensor and the micro differential pressure sensor are connected with the MAU control module; the plurality of temperature sensors comprise a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor, a fifth temperature sensor, a sixth temperature sensor, a seventh temperature sensor, an eighth temperature sensor, a ninth temperature sensor, a tenth temperature sensor, an eleventh temperature sensor, a twelfth temperature sensor, a thirteenth temperature sensor and a fourteenth temperature sensor; the plurality of humidity sensors comprise a first humidity sensor, a second humidity sensor, a third humidity sensor, a fourth humidity sensor, a fifth humidity sensor and a sixth humidity sensor;

[0006] The fresh air conditioning unit comprises a fresh air valve, a primary filter, a pre-heater, a heater, a first-stage surface cooler, a humidifier, a second-stage surface cooler, a re-heater, a supply fan and a medium filter which are sequentially arranged;

[0007] A first temperature sensor and a first humidity sensor are arranged between the fresh air valve and the primary filter; a second temperature sensor and a second humidity sensor are arranged between the heater and the primary surface cooler; a third temperature sensor and a third humidity sensor are arranged between the primary surface cooler and the humidifier; a fourth temperature sensor and a fourth humidity sensor are arranged between the humidifier and the secondary surface cooler; a fifth temperature sensor and a fifth humidity sensor are arranged between the secondary surface cooler and the reheater; a sixth temperature sensor and a sixth humidity sensor are arranged between the reheater and the air supply fan; a seventh temperature sensor is arranged on the return water pipeline of the heater; an eighth temperature sensor is arranged on the water supply pipeline of the heater; a ninth temperature sensor is arranged on the return water pipeline of the primary surface cooler; a tenth temperature sensor is arranged on the water supply pipeline of the primary surface cooler; an eleventh temperature sensor is arranged on the return water pipeline of the secondary surface cooler; a twelfth temperature sensor is arranged on the water supply pipeline of the secondary surface cooler; a thirteenth temperature sensor is arranged on the return water pipeline of the reheater; and a fourteenth temperature sensor is arranged on the water supply pipeline of the reheater.

[0008] The air volume sensor is arranged after the air supply fan.

[0009] The micro pressure difference sensor is arranged in the clean area.

[0010] The MAU control module is used to control the pre-heater, the heater, the primary surface cooler, the humidifier, the secondary surface cooler, the reheater and the air supply fan according to the data collected by the temperature sensors, the humidity sensors, the air volume sensor and the micro pressure difference sensor.

[0011] A fresh air air conditioning unit control method, the fresh air air conditioning unit control method is applied to the fresh air air conditioning unit control device, the fresh air air conditioning unit control method includes:

[0012] Obtain fresh air temperature and fresh air humidity; the fresh air temperature is collected by a first temperature sensor; the fresh air humidity is collected by the first humidity sensor;

[0013] Determine the working condition of the fresh air temperature and the fresh air humidity based on a psychrometric chart coordinate system; the psychrometric chart coordinate system is established with a target supply air temperature and a target supply air humidity as coordinate origin, with supply air humidity as X axis and with supply air temperature as Y axis; the working condition is a high-humidity high-temperature condition, a low-humidity high-temperature condition, a high-humidity low-temperature condition or a low-humidity low-temperature condition; the high-humidity high-temperature condition is a supply air temperature and a supply air humidity corresponding to a first quadrant of the psychrometric chart coordinate system; the low-humidity high-temperature condition is a supply air temperature and a supply air humidity corresponding to a second quadrant of the psychrometric chart coordinate system; the high-humidity low-temperature condition is a supply air temperature and a supply air humidity corresponding to a fourth quadrant of the psychrometric chart coordinate system; and the low-humidity low-temperature condition is a supply air temperature and a supply air humidity corresponding to a third quadrant of the psychrometric chart coordinate system;

[0014] If the fresh air temperature and the fresh air humidity are in the high-humidity high-temperature condition, adjust a primary surface air cooler, a secondary surface air cooler and a reheater so that the fresh air temperature and the fresh air humidity reach a target supply air temperature and a target supply air humidity;

[0015] If the fresh air temperature and the fresh air humidity are in the low-humidity high-temperature condition, adjust a primary surface air cooler and a humidifier so that the fresh air temperature and the fresh air humidity reach a target supply air temperature and a target supply air humidity;

[0016] If the fresh air temperature and the fresh air humidity are in the low-humidity low-temperature condition, adjust a pre-heater and a humidifier or adjust a pre-heater, a humidifier and a heater so that the fresh air temperature and the fresh air humidity reach a target supply air temperature and a target supply air humidity;

[0017] If the fresh air temperature and the fresh air humidity are in the high-humidity low-temperature condition, adjust a secondary surface air cooler and a reheater so that the fresh air temperature and the fresh air humidity reach a target supply air temperature and a target supply air humidity.

[0018] According to the specific embodiments of the present application, the following technical effects are provided:

[0019] The fresh air conditioning unit control device, method, system and electronic equipment of the application, by setting temperature sensors and humidity sensors between the fresh air valve and the primary filter, between the heater and the first surface cooler, between the first surface cooler and the humidifier, between the humidifier and the second surface cooler, between the second surface cooler and the reheater, and between the reheater and the supply fan of the fresh air conditioning unit, setting temperature sensors on the water supply and return pipeline of the heater, the water supply and return pipeline of the first surface cooler, the water supply and return pipeline of the second surface cooler, and the water supply and return pipeline of the reheater, setting an air volume sensor after the supply fan, setting a micro pressure difference sensor in the clean area, and the MAU control module controls the pre-heater, the heater, the first surface cooler, the humidifier, the second surface cooler, the reheater and the supply fan according to the data collected by the multiple temperature sensors, multiple humidity sensors, the air volume sensor and the micro pressure difference sensor. The application sets multiple temperature sensors and humidity sensors in the fresh air conditioning unit, and controls by using the MAU control module, which replaces the control by the staff according to experience, and improves the control accuracy of the fresh air conditioning unit. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0021] Figure 1 The fresh air conditioning unit control device structure schematic diagram provided by the application;

[0022] Figure 2 The fresh air conditioning unit control method flow chart provided by the application;

[0023] Figure 3 The control process schematic diagram when the outdoor fresh air is in high humidity and high temperature working condition;

[0024] Figure 4 The control process schematic diagram when the outdoor fresh air is in low humidity and high temperature working condition;

[0025] Figure 5 The control process schematic diagram when the outdoor fresh air is in low humidity and low temperature working condition, scenario 1;

[0026] Figure 6 The control process schematic diagram when the outdoor fresh air is in low humidity and low temperature working condition, scenario 2;

[0027] Figure 7 The control process schematic diagram when the outdoor fresh air is in high humidity and low temperature working condition.

[0028] Symbol Explanation: 1. Fresh air valve; 2. Primary filter; 3. Preheater; 4. Heater; 5. First-stage surface cooler; 6. Humidifier; 7. Second-stage surface cooler; 8. Reheater; 9. Supply fan; 10. Medium-efficiency filter; 11. First temperature sensor; 12. Second temperature sensor; 13. Third temperature sensor; 14. Fourth temperature sensor; 15. Fifth temperature sensor; 16. Sixth temperature sensor; 17. Air volume sensor; 18. First humidity sensor; 19. Second humidity sensor; 20. Third humidity sensor; 21. Fourth humidity sensor; 22. Fifth humidity sensor; 23. Sixth humidity sensor; 24. Micro-differential pressure sensor; 25. Seventh temperature sensor; 26. Eighth temperature sensor; 27. Ninth temperature sensor; 28. Tenth temperature sensor; 29. ​​Eleventh temperature sensor; 30. Twelfth temperature sensor; 31. Thirteenth temperature sensor; 32. Fourteenth temperature sensor. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The purpose of this invention is to provide a control device, method, system, and electronic equipment for fresh air conditioning units to improve the control accuracy of fresh air conditioning units.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] In a cleanroom, when the fresh air unit's fresh air valve 1, primary filter 2, preheater 3, heater 4, primary surface cooler 5, humidifier 6, secondary surface cooler 7, reheater 8, supply fan 9, and medium-efficiency filter 10 are installed... Figure 1 The system is connected and formed in a specific manner. Based on the end-of-life service quality requirements of cleanrooms, this invention automatically and cyclically controls the supply air volume, exhaust air volume, surface cooler water valve, and heating valve opening, thereby ensuring that the temperature, humidity, and slight positive pressure in the clean area meet the service quality requirements.

[0034] Among them, the end-of-line service quality of cleanrooms refers to the target supply air temperature and target supply air humidity that are artificially selected in order to meet the production process requirements of cleanrooms.

[0035] like Figure 1As shown, the fresh air conditioning unit control device provided by the present invention includes: a fresh air conditioning unit, multiple temperature sensors, multiple humidity sensors, an air volume sensor 17, a micro differential pressure sensor 24, and a MAU control module (not shown in the diagram). Figure 1 (As shown in the diagram); the fresh air conditioning unit, the multiple temperature sensors, the multiple humidity sensors, the air volume sensor 17, and the micro differential pressure sensor 24 are all connected to the MAU control module; the multiple temperature sensors include a first temperature sensor 11, a second temperature sensor 12, a third temperature sensor 13, a fourth temperature sensor 14, a fifth temperature sensor 15, a sixth temperature sensor 16, a seventh temperature sensor 25, an eighth temperature sensor 26, a ninth temperature sensor 27, a tenth temperature sensor 28, an eleventh temperature sensor 29, a twelfth temperature sensor 30, a thirteenth temperature sensor 31, and a fourteenth temperature sensor 32; the multiple humidity sensors include a first humidity sensor 18, a second humidity sensor 19, a third humidity sensor 20, a fourth humidity sensor 21, a fifth humidity sensor 22, and a sixth humidity sensor 23.

[0036] The fresh air conditioning unit includes, in sequence, a fresh air valve 1, a primary filter 2, a preheater 3, a heater 4, a primary surface cooler 5, a humidifier 6, a secondary surface cooler 7, a reheater 8, a blower 9, and a medium-efficiency filter 10.

[0037] In practical applications, the fresh air valve 1, primary filter 2, and medium-efficiency filter 10 are not within the adjustment and control range of this invention. The fresh air valve remains open after the unit is turned on. The preheater 3, heater 4, primary surface cooler 5, secondary surface cooler 7, and reheater 8 operate on the same principle, but are named here according to their location and the difference between cooling and heating modes. Among them, the preheater 3, heater 4, and reheater 8 use hot water as the internal carrier to achieve the heating effect. The primary surface cooler 5 and secondary surface cooler 7 use low-temperature cold water as the internal carrier to achieve the cooling effect.

[0038] The first temperature sensor 11 and the first humidity sensor 18 are arranged between the fresh air valve 1 and the primary filter 2; the second temperature sensor 12 and the second humidity sensor 19 are arranged between the heater 4 and the primary surface cooler 5; the third temperature sensor 13 and the third humidity sensor 20 are arranged between the primary surface cooler 5 and the humidifier 6; the fourth temperature sensor 14 and the fourth humidity sensor 21 are arranged between the humidifier 6 and the secondary surface cooler 7; the fifth temperature sensor 15 and the fifth humidity sensor 22 are arranged between the secondary surface cooler 7 and the reheater 8; the sixth temperature sensor 16 and the sixth humidity sensor 23 are arranged between the reheater 8 and the air supply fan 9; the seventh temperature sensor 25 is arranged on the water return pipeline of the heater 4; the eighth temperature sensor 26 is arranged on the water supply pipeline of the heater 4; the ninth temperature sensor 27 is arranged on the water return pipeline of the primary surface cooler 5; the tenth temperature sensor 28 is arranged on the water supply pipeline of the primary surface cooler 5; the eleventh temperature sensor 29 is arranged on the water return pipeline of the secondary surface cooler 7; the twelfth temperature sensor 30 is arranged on the water supply pipeline of the secondary surface cooler 7; the thirteenth temperature sensor 31 is arranged on the water return pipeline of the reheater 8; and the fourteenth temperature sensor 32 is arranged on the water supply pipeline of the reheater 8.

[0039] The air volume sensor 17 is arranged after the air supply fan.

[0040] The micro pressure difference sensor 24 is arranged in the clean area.

[0041] In actual application, in order to realize the fresh air air conditioning unit control method in the application, the fresh air air conditioning unit needs to be additionally provided with temperature sensors, humidity sensors, the air volume sensor 17 and the micro pressure difference sensor 24.

[0042] The temperature sensor T1 (the first temperature sensor 11) and the humidity sensor H1 (the first humidity sensor 18) are arranged between the fresh air valve and the primary filter. 新 新 The temperature sensor T2 (the third temperature sensor 13) and the humidity sensor H2 (the third humidity sensor 20) are arranged between the primary surface cooler and the humidifier.

[0043] The temperature sensor T1 (the first temperature sensor 11) and the humidity sensor H1 (the first humidity sensor 18) are arranged between the fresh air valve and the primary filter.

[0044] The temperature sensor T2 (the third temperature sensor 13) and the humidity sensor H2 (the third humidity sensor 20) are arranged between the primary surface cooler and the humidifier.

[0045] The temperature sensor T3 (the fourth temperature sensor 14) and the humidity sensor H3 (the fourth humidity sensor 21) are arranged between the humidifier and the secondary surface cooler.

[0046] ​A temperature sensor T4 (fifth temperature sensor 15) and a humidity sensor H4 (fifth humidity sensor 22) are installed between the secondary surface cooler and the reheater.

[0047] A temperature sensor T5 (sixth temperature sensor 16) and a humidity sensor H5 (sixth humidity sensor 23) are installed between the reheater and the air supply fan.

[0048] An air volume sensor 17 is installed after the air supply fan.

[0049] A seventh temperature sensor 25 and an eighth temperature sensor 26 are installed on the return water and supply water pipelines of the heater 4.

[0050] A ninth temperature sensor 27 and a tenth temperature sensor 28 are installed on the return water and supply water pipelines of the primary surface cooler.

[0051] An eleventh temperature sensor 29 and a twelfth temperature sensor 30 are installed on the return water and supply water pipelines of the secondary surface cooler.

[0052] A thirteenth temperature sensor 31 and a fourteenth temperature sensor 32 are installed on the return water and supply water pipelines of the reheater.

[0053] A micro pressure difference sensor 24 is installed in the clean area.

[0054] The MAU control module is used to control the pre-heater 3, the heater 4, the primary surface cooler 5, the humidifier 6, the secondary surface cooler 7, the reheater 8, and the air supply fan 9 according to the data collected by the multiple temperature sensors, the multiple humidity sensors, the air volume sensor 17, and the micro pressure difference sensor 24.

[0055] In actual application, the fresh air valve 1, the pre-heater 3, the heater 4, the primary surface cooler 5, the humidifier 6, the secondary surface cooler 7, the reheater 8, the air supply fan 9, and the above-mentioned sensors are integrated into the MAU control module through an RS-485 bus. An adjustment algorithm (fresh air air conditioning unit control method) is built in the MAU control module to adjust the equipment in the fresh air air conditioning unit.

[0056] Embodiment Two

[0057] As shown in Figure 2 , the present application provides a fresh air air conditioning unit control method, which is realized by the fresh air air conditioning unit control device of embodiment one, and the fresh air air conditioning unit control method comprises:

[0058] Step 201: obtaining fresh air temperature and fresh air humidity; the fresh air temperature is collected by a first temperature sensor; and the fresh air humidity is collected by a first humidity sensor.

[0059] Step 202: judging the working condition of the fresh air temperature and the fresh air humidity based on the enthalpy psychrometric coordinate system; the enthalpy psychrometric coordinate system is established with the target supply air temperature and the target supply air humidity (target supply air humidity content) as the coordinate origin, with the supply air humidity as the X axis, and with the supply air temperature as the Y axis; the working condition is a high-humidity high-temperature working condition, a low-humidity high-temperature working condition, a high-humidity low-temperature working condition, or a low-humidity low-temperature working condition; the high-humidity high-temperature working condition is the supply air temperature and the supply air humidity corresponding to the first quadrant of the enthalpy psychrometric coordinate system; the low-humidity high-temperature working condition is the supply air temperature and the supply air humidity corresponding to the second quadrant of the enthalpy psychrometric coordinate system; the high-humidity low-temperature working condition is the supply air temperature and the supply air humidity corresponding to the fourth quadrant of the enthalpy psychrometric coordinate system; and the low-humidity low-temperature working condition is the supply air temperature and the supply air humidity corresponding to the third quadrant of the enthalpy psychrometric coordinate system.

[0060] In actual application, a coordinate system is constructed in the enthalpy psychrometric diagram with the supply air humidity as the X axis and the supply air temperature as the Y axis, and the origin O is the control target point (target supply air temperature and target supply air humidity), thereby generating four quadrants. The positive direction of the X axis is the supply air humidity greater than the target supply air humidity, the negative direction of the X axis is the supply air humidity less than the target supply air humidity, the positive direction of the Y axis is the supply air temperature greater than the target supply air temperature, and the negative direction of the Y axis is the supply air temperature less than the target supply air temperature. The outdoor fresh air must exist in the four quadrants of the coordinate system, and different control methods are adopted for the fresh air in different working conditions, so as to achieve high-precision guarantee of the target supply air temperature and the humidity content.

[0061] According to the sampling values of the temperature sensor T 新 and the humidity sensor H 新 , the quadrant in which the current fresh air temperature and humidity are located is determined.

[0062] According to the quadrant in which the current fresh air temperature and humidity are located, different adjustment methods are adopted, and the adjustment methods include:

[0063] Adjustment method 1: The space around the clean area must maintain a certain pressure difference, and should maintain a positive pressure difference or a negative pressure difference according to the process requirements. According to the current sampling value P3 of the micro-pressure difference sensor of the clean area and the given target micro-positive pressure value P 目标 , the supply fan is adjusted.

[0064] If P3≥P 目标 , the frequency of the supply fan is reduced until the micro-positive pressure meets the target requirement.

[0065] If P3 目标 , the frequency of the supply fan is increased until the micro-positive pressure meets the target requirement.

[0066] Adjustment method 2: When the outdoor fresh air is in the third quadrant, the pre-heater adjusts the pre-heating valve based on the pre-heating capacity. According to the fresh air temperature T 新 , the heat recovery water temperature T预水 and given deviation value T 预差 (set deviation temperature), adjust the pre-heater.

[0067] If T 新 ≤ T 预水 -T 预差 Increase the pre-heater pre-heating valve opening.

[0068] If T 新 > T 预水 -T 预差 Decrease the pre-heater pre-heating valve opening.

[0069] Adjustment method 3: when the outdoor fresh air is in the non-third quadrant, the pre-heater closes the pre-heating valve.

[0070] Adjustment method 4: when the outdoor fresh air is in the third quadrant, the heater adjusts the heating valve based on the post-heating temperature. According to the post-heating temperature T1 (temperature value collected by the second temperature sensor) and the target heating temperature t e , adjust the heater. According to the working performance table of the heater, find the energy consumption under different heat transfer temperature differences under the same load rate, and determine the target heating temperature t e according to the principle of minimum energy consumption.

[0071] If T1 ≥ t e Decrease the heating valve opening of the heater until the post-heating temperature meets the target requirement.

[0072] If T1 < t e Increase the heating valve opening of the heater until the post-heating temperature meets the target requirement.

[0073] Adjustment method 5: when the outdoor fresh air is in the non-third quadrant, the heater closes the heating valve.

[0074] Adjustment method 6: when the outdoor fresh air is in the first quadrant or the second quadrant, the primary surface cooler adjusts the cold water valve of the primary surface cooler based on the temperature after the primary surface cooler. The opening adjustment of the cold water valve of the primary surface cooler is based on the working performance table of the surface cooler established by adjustment method 14. According to the temperature T2 after the primary surface cooler (temperature collected by the third temperature sensor) and the surface cooling target temperature t e , adjust the primary surface cooler. According to the working performance table of the primary surface cooler, find the energy consumption under different heat transfer temperature differences under the same load rate, and determine the surface cooling target temperature t e according to the principle of minimum energy consumption.

[0075] If T2 ≥ t e Increase the cold water valve opening of the primary surface cooler until the temperature T2 after the primary surface cooler meets the target requirement.

[0076] If T2 < t e Decrease the cold water valve opening of the primary surface cooler until the temperature T2 after the primary surface cooler meets the target requirement.

[0077] Adjustment method 7: When the outdoor fresh air is in the third quadrant or the fourth quadrant, close the surface cooling valve of the primary surface cooler.

[0078] Adjustment method 8: When the outdoor fresh air is in the second quadrant or the third quadrant, the humidifier adjusts the humidification valve based on the target supply air humidity content. According to the humidity content d after humidification (the humidity collected by the fourth humidity sensor) and the target supply air humidity content d 目 Adjust the humidifier.

[0079] If d ≥ d 目 Decrease the humidification valve opening of the humidifier until the humidity content after humidification meets the target requirement.

[0080] If d < d 目 Increase the humidification valve opening of the humidifier until the humidity content after humidification meets the target requirement.

[0081] Adjustment method 9: When the outdoor fresh air is in the first quadrant or the fourth quadrant, close the humidification valve of the humidifier.

[0082] Adjustment method 10: When the outdoor fresh air is in the first quadrant or the fourth quadrant, the secondary surface cooler adjusts the cold water valve of the secondary surface cooler based on the humidity before the secondary surface cooler. The opening adjustment of the cold water valve of the secondary surface cooler is based on the surface cooler performance table established by adjustment method 14. According to the humidity content d after secondary surface cooling (the humidity collected by the fifth humidity sensor) and the target supply air humidity content d 二后 , adjust the secondary surface cooler. 目

[0083] If d 二后 ≥ d 目 Increase the cold water valve opening of the secondary surface cooler until the humidity content after secondary surface cooling meets the target requirement;

[0084] If d 二后 < d 目 Decrease the cold water valve opening of the secondary surface cooler until the humidity content after secondary surface cooling meets the target requirement.

[0085] Adjustment method 11: When the outdoor fresh air is in the first quadrant or the fourth quadrant, close the surface cooling valve of the secondary surface cooler.

[0086] Adjustment method 12: When the outdoor fresh air is in the first quadrant or the third quadrant or the fourth quadrant, the reheater adjusts the reheating valve based on the temperature before the reheater. According to the temperature T 再后 after reheating (the temperature collected by the sixth temperature sensor) and the supply air temperature limit T​限 Adjusting the reheater.

[0087] If T 再后 ≥ T 限 Decreasing the reheating valve opening of the reheater until the temperature after the reheater meets the target requirement.

[0088] If T 再后 < T 限 Increasing the reheating valve opening of the reheater until the temperature after the reheater meets the target requirement.

[0089] Adjusting method 13: when the outdoor fresh air is in the second quadrant, closing the reheating valve of the reheater.

[0090] Adjusting method 14: in order to determine the working performance of the cooling coil under various working conditions, the present application establishes the cooling coil working performance table in the following way. The cooling coil working performance table is a two-dimensional table, with the load rate as the horizontal coordinate and the water temperature difference as the vertical coordinate. The intersection of the horizontal coordinate and the vertical coordinate is filled with the heat exchange temperature difference and the air temperature difference. The cooling coil working performance table is a dynamic establishment process. In actual operation, after invalid records are removed by using the maximum likelihood estimation method, the recent data are retained for table establishment. At the same time, in the adjustment process, the corresponding heat exchange temperature difference and air temperature difference can be determined according to the data of the table under the current water temperature difference and load rate.

[0091] Step 203: if the fresh air temperature and the fresh air humidity are in the high humidity and high temperature working condition, adjusting the primary cooling coil, the secondary cooling coil and the reheater so that the fresh air temperature and the fresh air humidity meet the target supply air temperature and the target supply air humidity.

[0092] As an optional implementation, step 203 specifically includes:

[0093] If the fresh air temperature and the fresh air humidity are in the high humidity and high temperature working condition, obtaining the temperature after the primary cooling coil collected by the third temperature sensor, the humidity after the secondary cooling coil collected by the fifth humidity sensor and the temperature after the reheater collected by the sixth temperature sensor.

[0094] Determining whether the temperature after the primary cooling coil is greater than or equal to the cooling target temperature.

[0095] If yes, increasing the cold water valve opening of the primary cooling coil so that the temperature after the primary cooling coil meets the cooling target temperature.

[0096] If no, decreasing the cold water valve opening of the primary cooling coil so that the temperature after the primary cooling coil meets the cooling target temperature.

[0097] Determining whether the humidity after the secondary cooling coil is greater than or equal to the target supply air humidity.

[0098] If so, increase the opening of the chilled water valve of the secondary surface cooler so that the humidity after the secondary surface cooler reaches the target supply air humidity.

[0099] If not, reduce the opening of the chilled water valve of the secondary surface cooler so that the humidity after the secondary surface cooler reaches the target supply air humidity.

[0100] Determine whether the temperature after the reheater is greater than or equal to the supply air temperature limit.

[0101] If so, reduce the opening of the heating valve of the reheater so that the temperature after the reheater reaches the supply air temperature limit.

[0102] If not, increase the opening of the heating valve of the reheater so that the temperature after the reheater reaches the supply air temperature limit.

[0103] In practical applications, when the outdoor fresh air is in the first quadrant of high humidity and high temperature conditions, the outdoor fresh air needs to pass through as follows: Figure 3 The target air supply requirements are achieved after the three-stage processing shown.

[0104] The first stage of treatment is located in the primary surface cooler, and uses adjustment method 6 to cool it down to the target surface cooling temperature t. e The second stage of treatment is located in the secondary surface cooler, where adjustment method 10 is used to dehumidify to the target supply air moisture content; the third stage of treatment is located in the reheater, where adjustment method 12 is used to heat up to the target supply air requirement (supply air temperature limit).

[0105] Additionally, the preheating valve of the preheater is adjusted using adjustment method 3, the heating valve of the heater is adjusted using adjustment method 5, and the humidifying valve of the humidifier is adjusted using adjustment method 9.

[0106] Step 204: If the fresh air temperature and the fresh air humidity are in the low humidity and high temperature condition, adjust the first-stage surface cooler and humidifier to make the fresh air temperature and the fresh air humidity reach the target supply air temperature and the target supply air humidity.

[0107] As an optional implementation, step 204 specifically includes:

[0108] If the fresh air temperature and the fresh air humidity are under the low humidity and high temperature conditions, the temperature after the first-stage surface cooler collected by the third temperature sensor and the humidity after the humidifier collected by the fourth humidity sensor are obtained.

[0109] Determine whether the temperature after the first-stage surface cooler is greater than or equal to the target surface cooler temperature.

[0110] If so, increase the opening of the cold water valve of the first-stage surface cooler so that the temperature after the first-stage surface cooler reaches the target surface cooler temperature.

[0111] If not, reduce the opening of the cold water valve of the first-stage surface cooler so that the temperature after the first-stage surface cooler reaches the target surface cooler temperature.

[0112] Determine whether the humidity after the humidifier is greater than or equal to the target supply air humidity.

[0113] If so, reduce the opening of the humidifier valve to make the humidity after the humidifier reach the target supply air humidity.

[0114] If not, increase the opening of the humidifier's humidifier valve to make the humidity after the humidifier reach the target supply air humidity.

[0115] In practical applications, such as Figure 4 As shown, when the outdoor fresh air is in the second quadrant with low humidity and high temperature, it needs to undergo two stages of treatment as shown in the figure to reach the target air supply requirements. The first stage of treatment is located in the first-stage surface cooler, and the temperature is reduced to t using adjustment method 6. e The second stage of treatment is located in the humidifier, where adjustment method 8 is used to humidify to the target air supply requirement (target air supply humidity).

[0116] In addition, the preheater is regulated by regulation method 3, the heater is regulated by regulation method 5, the secondary surface cooler is regulated by regulation method 11, and the reheater is regulated by regulation method 13.

[0117] Step 205: If the fresh air temperature and the fresh air humidity are in the low humidity and low temperature condition, adjust the preheater and humidifier or adjust the preheater, humidifier and heater to make the fresh air temperature and the fresh air humidity reach the target supply air temperature and target supply air humidity.

[0118] As an optional implementation, step 205 specifically includes:

[0119] If the fresh air temperature and the fresh air humidity are in the low humidity and low temperature condition, obtain the heat recovery water temperature of the preheater and the humidity after the humidifier collected by the fourth humidity sensor.

[0120] Determine whether the fresh air temperature is less than or equal to the difference between the heat recovery water temperature and the set deviation temperature.

[0121] If so, increase the opening of the preheating valve of the preheater so that the fresh air temperature reaches the difference between the heat recovery water temperature and the set deviation temperature.

[0122] If not, reduce the opening of the preheating valve of the preheater so that the fresh air temperature reaches the difference between the heat recovery water temperature and the set deviation temperature.

[0123] judging whether the humidity after the humidifier is greater than or equal to the target supply air humidity.

[0124] If yes, reducing the humidification valve opening degree of the humidifier to make the humidity after the humidifier reach the target supply air humidity.

[0125] If no, increasing the humidification valve opening degree of the humidifier to make the humidity after the humidifier reach the target supply air humidity.

[0126] In actual application, when the outdoor fresh air is in the third quadrant low humidity and low temperature condition, the outdoor fresh air needs to be treated by heating and humidification to reach the target supply air requirement. The process can have two treatment scenarios according to the supply air temperature after the pre-heater heating.

[0127] Scenario 1: After two stages as shown in Figure 5 , the first stage treatment is located in the pre-heater, and the heating is adjusted to t' e by using adjustment method 2; the second stage treatment is located in the humidifier, and the humidification is adjusted to the target supply air requirement (target supply air humidity) by using adjustment method 8.

[0128] In addition, the first stage cooling coil is adjusted by using adjustment method 7, and the second stage cooling coil is adjusted by using adjustment method 11.

[0129] As another optional implementation, step 205 specifically comprises:

[0130] If the fresh air temperature and the fresh air humidity are in the low humidity and low temperature working condition, the heat recovery water temperature of the pre-heater, the humidity after the humidifier collected by the fourth humidity sensor, and the temperature after the heater collected by the second temperature sensor are obtained.

[0131] judging whether the fresh air temperature is less than or equal to the difference between the heat recovery water temperature and the set deviation temperature.

[0132] If yes, increasing the pre-heating valve opening degree of the pre-heater to make the fresh air temperature reach the difference between the heat recovery water temperature and the set deviation temperature.

[0133] If no, reducing the pre-heating valve opening degree of the pre-heater to make the fresh air temperature reach the difference between the heat recovery water temperature and the set deviation temperature.

[0134] judging whether the humidity after the humidifier is greater than or equal to the target supply air humidity.

[0135] If yes, reducing the humidification valve opening degree of the humidifier to make the humidity after the humidifier reach the target supply air humidity.

[0136] If no, increasing the humidification valve opening degree of the humidifier to make the humidity after the humidifier reach the target supply air humidity.

[0137] Determine whether the temperature after the heater is greater than or equal to the supply air temperature limit.

[0138] If so, reduce the opening of the heating valve of the heater so that the temperature after the heater reaches the target heating temperature.

[0139] If not, increase the opening of the heating valve of the heater so that the temperature after the heater reaches the target heating temperature.

[0140] In practical applications, scenario 2: after the following... Figure 6 The three stages shown are as follows: the first stage is located in the preheater, and adjustment method 2 is used to maximize the temperature rise to t'. e The target value; the second stage of treatment is located in the humidifier, using adjustment method 8 to humidify to the target supply air moisture content; the third stage of treatment is located in the heater, using adjustment method 4 to raise the temperature to the target heating temperature.

[0141] In addition, adjustment method 7 is used to adjust the first-stage surface cooler, and adjustment method 11 is used to adjust the second-stage surface cooler.

[0142] Step 206: If the fresh air temperature and the fresh air humidity are in the high humidity and low temperature condition, adjust the secondary surface cooler and the reheater to make the fresh air temperature and the fresh air humidity reach the target supply air temperature and the target supply air humidity.

[0143] As an optional implementation, step 206 specifically includes:

[0144] If the fresh air temperature and the fresh air humidity are under the high humidity and low temperature condition, obtain the humidity after the secondary surface cooler collected by the fifth humidity sensor and the temperature after the reheater collected by the sixth temperature sensor.

[0145] Determine whether the humidity after the secondary surface cooler is greater than or equal to the target supply air humidity.

[0146] If so, increase the opening of the chilled water valve of the secondary surface cooler so that the humidity after the secondary surface cooler reaches the target supply air humidity.

[0147] If not, reduce the opening of the chilled water valve of the secondary surface cooler so that the humidity after the secondary surface cooler reaches the target supply air humidity.

[0148] Determine whether the temperature after the reheater is greater than or equal to the supply air temperature limit.

[0149] If so, reduce the opening of the heating valve of the reheater so that the temperature after the reheater reaches the supply air temperature limit.

[0150] If not, the heating valve opening of the reheater is increased to make the temperature after the reheater reach the supply air temperature limit value.

[0151] In practical application, when the outdoor fresh air is in the fourth quadrant with high humidity and low temperature, the outdoor fresh air needs to be treated through two stages as shown in the figure to reach the target supply air requirement. Figure 7 The first stage treatment is located in the secondary surface cooler, and the dehumidification method 10 is used to dehumidify to the target supply air humidity, and the second stage treatment is located in the reheater, and the temperature is raised to the target supply air temperature by using the temperature raising method 12.

[0152] In addition, the pre-heater is adjusted by using the adjustment method 2, the heater is adjusted by using the adjustment method 5, the primary surface cooler is adjusted by using the adjustment method 7, and the humidifier is adjusted by using the adjustment method 9.

[0153] In the present application, the adjustment of the supply air fan adopts the adjustment method 1.

[0154] After the adjustment of the supply air fan is stable, the clean area micro-positive pressure can converge in the preset pressure difference ±0.5Pa range.

[0155] The automatic closed-loop adjustment mode of the pre-heater, the heater, the primary surface cooler, the humidifier, the secondary surface cooler, the reheater and the supply air fan is established, so that the whole system can be quickly stabilized in two adjustment periods.

[0156] The knowledge base in the surface cooler working performance table is established based on the actual operation data sampling, which is more representative than the nominal data of the equipment, so that the adjustment of the surface cooler by using the surface cooler working performance table will be more accurate.

[0157] After the surface cooler working performance table is established, the corresponding heat transfer temperature difference and air temperature difference can be obtained according to the given water temperature difference and load rate, which provides a basis for the adjustment of the surface cooler.

[0158] Based on the adjustment mode of the surface cooler working performance table, the supply air humidity can converge in the target humidity ±0.1g / kg range.

[0159] The present application realizes the automatic adjustment of the pre-heater, the heater, the primary surface cooler, the humidifier, the secondary surface cooler, the reheater and the supply air fan in the fresh air air conditioning unit through the MAU control module according to the temperature and humidity of each temperature stage, and realizes the adjustment stability after two adjustment periods.

[0160] Example three

[0161] In order to perform the method corresponding to the above-mentioned embodiment two to realize the corresponding functions and technical effects, a fresh air air conditioning unit control system is provided below, which comprises:

[0162] The data acquisition module is configured to acquire a fresh air temperature and a fresh air humidity; the fresh air temperature is collected by a first temperature sensor; and the fresh air humidity is collected by the first humidity sensor.

[0163] The working condition judgment module is configured to judge a working condition of the fresh air temperature and the fresh air humidity based on an enthalpy-humidity chart coordinate system; the enthalpy-humidity chart coordinate system is established with a target supply air temperature and a target supply air humidity as coordinate origin points, with supply air humidity as an X-axis, and with supply air temperature as a Y-axis; the working condition is a high-humidity high-temperature working condition, a low-humidity high-temperature working condition, a high-humidity low-temperature working condition, or a low-humidity low-temperature working condition; the high-humidity high-temperature working condition is a supply air temperature and a supply air humidity corresponding to a first quadrant of the enthalpy-humidity chart coordinate system; the low-humidity high-temperature working condition is a supply air temperature and a supply air humidity corresponding to a second quadrant of the enthalpy-humidity chart coordinate system; the high-humidity low-temperature working condition is a supply air temperature and a supply air humidity corresponding to a fourth quadrant of the enthalpy-humidity chart coordinate system; and the low-humidity low-temperature working condition is a supply air temperature and a supply air humidity corresponding to a third quadrant of the enthalpy-humidity chart coordinate system.

[0164] The first execution module is configured to, if the fresh air temperature and the fresh air humidity are in the high-humidity high-temperature working condition, adjust a first surface air cooler, a second surface air cooler, and a reheater so that the fresh air temperature and the fresh air humidity reach a target supply air temperature and a target supply air humidity.

[0165] The second execution module is configured to, if the fresh air temperature and the fresh air humidity are in the low-humidity high-temperature working condition, adjust a first surface air cooler and a humidifier so that the fresh air temperature and the fresh air humidity reach a target supply air temperature and a target supply air humidity.

[0166] The third execution module is configured to, if the fresh air temperature and the fresh air humidity are in the low-humidity low-temperature working condition, adjust a pre-heater and a humidifier or adjust the pre-heater, the humidifier, and a reheater so that the fresh air temperature and the fresh air humidity reach a target supply air temperature and a target supply air humidity.

[0167] The fourth execution module is configured to, if the fresh air temperature and the fresh air humidity are in the high-humidity low-temperature working condition, adjust a second surface air cooler and a reheater so that the fresh air temperature and the fresh air humidity reach a target supply air temperature and a target supply air humidity.

[0168] Embodiment four

[0169] The present application provides an electronic device, comprising: a memory and a processor, the memory is used for storing a computer program, the processor runs the computer program to make the electronic device execute the fresh air air conditioning unit control method of embodiment two.

[0170] Embodiment five

[0171] The application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the fresh air conditioning unit control method of embodiment two.

[0172] The embodiments are described in a progressive manner in the specification, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0173] The principles and implementation manners of the application are described by using specific examples in the specification, and the above embodiment description is only used to help understand the method and the core idea of the application; meanwhile, for the general technical personnel in the field, the specific implementation manners and application ranges can be changed according to the idea of the application. In conclusion, the content of the specification should not be understood as the limitation of the application.

Claims

1. A control method for a fresh air conditioning unit, characterized in that, The fresh air conditioning unit control method is applied to a fresh air conditioning unit control device; the fresh air conditioning unit control device includes: a fresh air conditioning unit, multiple temperature sensors, multiple humidity sensors, an airflow sensor, a micro-differential pressure sensor, and a MAU control module; the fresh air conditioning unit, the multiple temperature sensors, the multiple humidity sensors, the airflow sensor, and the micro-differential pressure sensor are all connected to the MAU control module; the multiple temperature sensors include a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor, a fifth temperature sensor, a sixth temperature sensor, a seventh temperature sensor, an eighth temperature sensor, a ninth temperature sensor, a tenth temperature sensor, an eleventh temperature sensor, a twelfth temperature sensor, a thirteenth temperature sensor, and a fourteenth temperature sensor; the multiple humidity sensors include a first humidity sensor, a second humidity sensor, a third humidity sensor, a fourth humidity sensor, a fifth humidity sensor, and a sixth humidity sensor; The fresh air conditioning unit includes, in sequence, a fresh air valve, a primary filter, a preheater, a heater, a primary surface cooler, a humidifier, a secondary surface cooler, a reheater, a blower, and a medium-efficiency filter; A first temperature sensor and a first humidity sensor are installed between the fresh air valve and the primary filter; a second temperature sensor and a second humidity sensor are installed between the heater and the first-stage surface cooler; a third temperature sensor and a third humidity sensor are installed between the first-stage surface cooler and the humidifier; a fourth temperature sensor and a fourth humidity sensor are installed between the humidifier and the second-stage surface cooler; a fifth temperature sensor and a fifth humidity sensor are installed between the second-stage surface cooler and the reheater; a sixth temperature sensor and a sixth humidity sensor are installed between the reheater and the blower; a seventh temperature sensor is installed on the return water pipe of the heater; an eighth temperature sensor is installed on the supply water pipe of the heater; a ninth temperature sensor is installed on the return water pipe of the first-stage surface cooler; a tenth temperature sensor is installed on the supply water pipe of the first-stage surface cooler; an eleventh temperature sensor is installed on the return water pipe of the second-stage surface cooler; a twelfth temperature sensor is installed on the supply water pipe of the second-stage surface cooler; a thirteenth temperature sensor is installed on the return water pipe of the reheater; and a fourteenth temperature sensor is installed on the supply water pipe of the reheater. The air volume sensor is located after the blower; The differential pressure sensor is installed in the clean area; The MAU control module is used to control the preheater, the heater, the first-stage surface cooler, the humidifier, the second-stage surface cooler, the reheater, and the blower based on data collected by multiple temperature sensors, multiple humidity sensors, air volume sensors, and micro differential pressure sensors. The control method for the fresh air conditioning unit includes: The fresh air temperature and humidity are acquired; the fresh air temperature is collected by a first temperature sensor; the fresh air humidity is collected by a first humidity sensor. Based on the enthalpy-humidity diagram coordinate system, the operating conditions of the fresh air temperature and humidity are determined. The enthalpy-humidity diagram coordinate system is established with the target supply air temperature and humidity as the origin, supply air humidity as the X-axis, and supply air temperature as the Y-axis. The operating conditions are high humidity and high temperature, low humidity and high temperature, high humidity and low temperature, or low humidity and low temperature. The high humidity and high temperature operating condition is the supply air temperature and humidity corresponding to the first quadrant of the enthalpy-humidity diagram coordinate system. The low humidity and high temperature operating condition is the supply air temperature and humidity corresponding to the second quadrant of the enthalpy-humidity diagram coordinate system. The high humidity and low temperature operating condition is the supply air temperature and humidity corresponding to the fourth quadrant of the enthalpy-humidity diagram coordinate system. The low humidity and low temperature operating condition is the supply air temperature and humidity corresponding to the third quadrant of the enthalpy-humidity diagram coordinate system. If the fresh air temperature and the fresh air humidity are under the high humidity and high temperature conditions, then adjust the first-stage surface cooler, the second-stage surface cooler and the reheater to make the fresh air temperature and the fresh air humidity reach the target supply air temperature and the target supply air humidity. If the fresh air temperature and the fresh air humidity are in the low humidity and high temperature condition, then adjust the first-stage surface cooler and humidifier to make the fresh air temperature and the fresh air humidity reach the target supply air temperature and the target supply air humidity. If the fresh air temperature and the fresh air humidity are in the low humidity and low temperature condition, then adjust the preheater, humidifier and heater to make the fresh air temperature and the fresh air humidity reach the target supply air temperature and the target supply air humidity. If the fresh air temperature and the fresh air humidity are in the high humidity and low temperature condition, then adjust the secondary surface cooler and the reheater to make the fresh air temperature and the fresh air humidity reach the target supply air temperature and the target supply air humidity. If the fresh air temperature and humidity are under the low humidity and low temperature condition, then adjust the preheater, humidifier, and heater to bring the fresh air temperature and humidity to the target supply air temperature and humidity, specifically including: If the fresh air temperature and the fresh air humidity are in the low humidity and low temperature condition, obtain the heat recovery water temperature of the preheater, the humidity after the humidifier collected by the fourth humidity sensor, and the temperature after the heater collected by the second temperature sensor. Determine whether the fresh air temperature is less than or equal to the difference between the heat recovery water temperature and the set deviation temperature; If so, increase the opening of the preheating valve of the preheater so that the fresh air temperature reaches the difference between the heat recovery water temperature and the set deviation temperature; If not, reduce the opening of the preheating valve of the preheater so that the fresh air temperature reaches the difference between the heat recovery water temperature and the set deviation temperature. Determine whether the humidity after the humidifier is greater than or equal to the target supply air humidity; If so, reduce the opening of the humidifier valve to make the humidity after the humidifier reach the target supply air humidity; If not, increase the opening of the humidifier valve to make the humidity after the humidifier reach the target supply air humidity; Determine whether the temperature after the heater is greater than or equal to the target heating temperature; If so, reduce the opening of the heating valve of the heater so that the temperature after the heater reaches the target heating temperature; If not, increase the opening of the heating valve of the heater so that the temperature after the heater reaches the target heating temperature.

2. The fresh air conditioning unit control method according to claim 1, characterized in that, If the fresh air temperature and humidity are under the high humidity and high temperature condition, then adjust the primary surface cooler, the secondary surface cooler, and the reheater to bring the fresh air temperature and humidity to the target supply air temperature and humidity, specifically including: If the fresh air temperature and the fresh air humidity are under the high humidity and high temperature conditions, the temperature after the first-stage surface cooler collected by the third temperature sensor, the humidity after the second-stage surface cooler collected by the fifth humidity sensor, and the temperature after the reheater collected by the sixth temperature sensor are obtained. Determine whether the temperature after the first-stage surface cooler is greater than or equal to the surface cooler target temperature; If so, increase the opening of the cold water valve of the first-stage surface cooler so that the temperature after the first-stage surface cooler reaches the target surface cooler temperature; If not, reduce the opening of the cold water valve of the first-stage surface cooler so that the temperature after the first-stage surface cooler reaches the target surface cooler temperature. Determine whether the humidity after the secondary surface cooler is greater than or equal to the target supply air humidity; If so, increase the opening of the chilled water valve of the secondary surface cooler so that the humidity after the secondary surface cooler reaches the target supply air humidity; If not, reduce the opening of the chilled water valve of the secondary surface cooler so that the humidity after the secondary surface cooler reaches the target supply air humidity; Determine whether the temperature after the reheater is greater than or equal to the supply air temperature limit; If so, reduce the opening of the heating valve of the reheater so that the temperature after the reheater reaches the supply air temperature limit. If not, increase the opening of the heating valve of the reheater so that the temperature after the reheater reaches the supply air temperature limit.

3. The fresh air conditioning unit control method according to claim 1, characterized in that, If the fresh air temperature and humidity are under the low humidity and high temperature condition, then adjust the primary surface cooler and humidifier to bring the fresh air temperature and humidity to the target supply air temperature and humidity, specifically including: If the fresh air temperature and the fresh air humidity are in the low humidity and high temperature condition, obtain the temperature after the first-stage surface cooler collected by the third temperature sensor and the humidity after the humidifier collected by the fourth humidity sensor. Determine whether the temperature after the first-stage surface cooler is greater than or equal to the surface cooler target temperature; If so, increase the opening of the cold water valve of the first-stage surface cooler so that the temperature after the first-stage surface cooler reaches the target surface cooler temperature; If not, reduce the opening of the cold water valve of the first-stage surface cooler so that the temperature after the first-stage surface cooler reaches the target surface cooler temperature. Determine whether the humidity after the humidifier is greater than or equal to the target supply air humidity; If so, reduce the opening of the humidifier valve to make the humidity after the humidifier reach the target supply air humidity; If not, increase the opening of the humidifier's humidifier valve to make the humidity after the humidifier reach the target supply air humidity.

4. The fresh air conditioning unit control method according to claim 1, characterized in that, If the fresh air temperature and humidity are under the high humidity and low temperature condition, then adjust the secondary surface cooler and reheater to bring the fresh air temperature and humidity to the target supply air temperature and humidity, specifically including: If the fresh air temperature and the fresh air humidity are in the high humidity and low temperature condition, obtain the humidity after the secondary surface cooler collected by the fifth humidity sensor and the temperature after the reheater collected by the sixth temperature sensor. Determine whether the humidity after the secondary surface cooler is greater than or equal to the target supply air humidity; If so, increase the opening of the chilled water valve of the secondary surface cooler so that the humidity after the secondary surface cooler reaches the target supply air humidity; If not, reduce the opening of the chilled water valve of the secondary surface cooler so that the humidity after the secondary surface cooler reaches the target supply air humidity; Determine whether the temperature after the reheater is greater than or equal to the supply air temperature limit; If so, reduce the opening of the heating valve of the reheater so that the temperature after the reheater reaches the supply air temperature limit. If not, increase the opening of the heating valve of the reheater so that the temperature after the reheater reaches the supply air temperature limit.

5. An electronic device, characterized in that, include: A memory and a processor, wherein the memory is used to store a computer program, and the processor runs the computer program to cause the electronic device to perform the fresh air conditioning unit control method according to any one of claims 1-4.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the fresh air conditioning unit control method according to any one of claims 1-4.

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