Evaporative cooling central air conditioner airflow distribution regulation and control system based on energy efficiency optimization

Abstract

The invention belongs to the technical field of central air conditioner management and control, and particularly relates to an evaporative cooling central air conditioner airflow distribution regulation and control system based on energy efficiency optimization, which comprises a distribution space acquisition unit, a thermal load area dynamic division unit, an airflow distribution management and control unit, a monitoring evaluation unit and a central air conditioner monitoring center, the personnel residence condition of each space area is reasonably judged through the thermal load area dynamic division unit, decision information support is provided for automatic control of the airflow distribution management and control unit, and the airflow distribution management and control unit carries out airflow conveying control and air supply outlet angle control on all the space areas based on classification marking information. The monitoring evaluation unit analyzes the air supply management and control performance of the corresponding space area, causes are investigated and analyzed when the air supply management and control abnormal signal is generated, corresponding improvement measures are taken, the cooling control effect of each space area is guaranteed, energy efficiency optimization is achieved, and the intelligent level and the automation level are high.

Description

Technical Field

[0001] The present invention relates to the technical field of central air-conditioning control, and specifically to an air flow distribution regulation system for an evaporative cooling central air-conditioning based on energy efficiency optimization. Background Art

[0002] An evaporative cooling central air-conditioning is an energy-saving air-conditioning system that uses the principle of heat absorption by water evaporation to achieve cooling. Its core lies in the heat and mass exchange between water and air. By spraying water onto a cooling medium to form a water film, the latent heat of evaporation is used to absorb the heat in the air, thereby reducing the air temperature, without the need for the complex refrigeration cycle of traditional compression air-conditioning. Currently, fixed air volume or simple zoning control is generally used for the air flow distribution of evaporative cooling central air-conditioning. It is unable to adjust the air flow distribution according to real-time load changes, which easily leads to overcooling or overheating in local areas, is not conducive to ensuring the cooling control effect of each area and achieving energy efficiency optimization, and is unable to effectively monitor the air flow distribution control process and accurately evaluate the performance of air supply control. It is difficult for managers to take corresponding improvement measures in a timely manner, and the level of intelligence and automation is low. In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0003] The purpose of the present invention is to provide an air flow distribution regulation system for an evaporative cooling central air-conditioning based on energy efficiency optimization, which solves the problems in the prior art that it is unable to adjust the air flow distribution according to real-time load changes, easily leads to overcooling or overheating in local areas, is not conducive to ensuring the cooling control effect of each area and achieving energy efficiency optimization, and is unable to effectively monitor the air flow distribution control process and accurately evaluate the performance of air supply control, and has a low level of intelligence and automation.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: An air flow distribution regulation system for an evaporative cooling central air-conditioning based on energy efficiency optimization includes a distribution space acquisition unit, a dynamic heat load area division unit, an air flow distribution control unit, a monitoring and evaluation unit, and a central air-conditioning monitoring center; the distribution space acquisition unit obtains a number of spatial areas for air flow distribution of the evaporative cooling central air-conditioning, marks the corresponding spatial areas as heat load area i, and i is a natural number greater than 1; the dynamic heat load area division unit marks heat load area i as area A, area B, or area C through personnel flow monitoring and analysis, and sends the classification marking information of heat load area i to the air flow distribution control unit and the central air-conditioning monitoring center. The air flow distribution control unit conducts air flow transportation control and air supply outlet angle control for all spatial areas based on the classification mark information, and sends the control information to the central air-conditioning monitoring center and the monitoring and evaluation unit; the monitoring and evaluation unit analyzes the air supply control performance of the heat load area i, generates a qualified signal or an abnormal signal for the air supply control of the heat load area i through the analysis, and sends the qualified signal or the abnormal signal for the air supply control of the heat load area i to the central air-conditioning monitoring center.

[0005] Further, the specific analysis process of personnel flow monitoring and analysis is as follows: Obtain the real-time number of staying personnel in the heat load area i and calculate the ratio with the area of the heat load area i to obtain the personnel residence value, compare the personnel residence value with the preset personnel residence threshold value. If the personnel residence value exceeds the preset personnel residence threshold value, it is determined that the heat load area i is in a state of personnel aggregation; Obtain the load area classification coefficient of the heat load area i through analysis, compare the load area classification coefficient with the preset load area classification coefficient range. If the load area classification coefficient exceeds the maximum value of the preset load area classification coefficient range, mark the heat load area i as area A; if the load area classification coefficient is within the preset load area classification coefficient range, mark the heat load area i as area B; if the load area classification coefficient does not exceed the minimum value of the preset load area classification coefficient range, mark the heat load area i as area C.

[0006] Further, the specific analysis and acquisition method of the load area classification coefficient is as follows: Obtain the total duration of the heat load area i in the state of personnel aggregation per unit time and mark it as the aggregation detection value, and mark the average value and the maximum value of the personnel residence value of the heat load area i per unit time as the residence performance value and the residence amplitude value respectively; calculate the load area classification coefficient by performing a weighted summation calculation on the aggregation detection value, the residence performance value and the residence amplitude value.

[0007] Further, the specific control strategy for the air flow distribution control unit to conduct air flow transportation control and air supply outlet angle control is as follows: Decrease the air supply volume per unit volume for areas A, B, and C, and decrease the upward inclination angle of the air supply outlets for areas A, B, and C.

[0008] Further, the specific analysis process of the monitoring and evaluation unit includes: Obtain all the air supply outlets distributed in the heat load area i, mark the execution deviation value of the upward inclination angle of the corresponding air supply outlet as the upward inclination abnormal value, and obtain the execution deviation value of the real-time air supply volume of the corresponding air supply outlet and mark it as the air supply control deviation value. Compare the upward inclination abnormal value and the air supply control deviation value with the preset upward inclination abnormal threshold and the preset air supply control deviation threshold respectively. If the upward inclination abnormal value or the air supply control deviation value exceeds the corresponding preset threshold, it is determined that the corresponding air supply outlet is in the air supply control abnormal state; Analyze to determine whether there is an air supply outlet with control abnormality in the heat load area i per unit time. If there is an air supply outlet with control abnormality in the heat load area i, generate an air supply control abnormal signal for the heat load area i.

[0009] Furthermore, the analysis and judgment method for the air supply outlet with control abnormality is as follows: Obtain the total duration of the corresponding air supply outlet being in the air supply control abnormal state per unit time and mark it as the air supply control abnormal situation value. Compare the air supply control abnormal situation value with the preset air supply control abnormal situation threshold. If the air supply control abnormal situation value exceeds the preset air supply control abnormal situation threshold, mark the corresponding air supply outlet as an air supply outlet with control abnormality; If the air supply control abnormal situation value does not exceed the preset air supply control abnormal situation threshold, mark the average value of the upward inclination abnormal value and the average value of the air supply control deviation value corresponding to the corresponding air supply outlet per unit time as the upward inclination non-optimal value and the air supply non-optimal value respectively. Calculate the monitoring and evaluation coefficient by weighted summing the air supply control abnormal situation value, the upward inclination non-optimal value, and the air supply non-optimal value. Compare the monitoring and evaluation coefficient with the preset monitoring and evaluation coefficient threshold. If the monitoring and evaluation coefficient exceeds the preset monitoring and evaluation coefficient threshold, mark the corresponding air supply outlet as an air supply outlet with control abnormality.

[0010] Furthermore, if there is no air supply outlet with control abnormality in the heat load area i, set several detection time points per unit time. Mark the ratio of the number of air supply outlets in the heat load area i that are in the air supply control abnormal state at the corresponding detection time points as the cooperation abnormal occupancy value. Compare the cooperation abnormal occupancy value with the preset cooperation abnormal occupancy threshold. If the cooperation abnormal occupancy value exceeds the preset cooperation abnormal occupancy threshold, mark the corresponding detection time point as a cooperation abnormal time point; Collect the number of cooperation abnormal time points corresponding to the heat load area i per unit time and calculate the ratio with the total number of detection time points to obtain the cooperation abnormal detection value. Compare the cooperation abnormal detection value with the preset cooperation abnormal detection threshold. If the cooperation abnormal detection value exceeds the preset cooperation abnormal detection threshold, generate an air supply control abnormal signal for the heat load area i; if the cooperation abnormal detection value does not exceed the preset cooperation abnormal detection threshold, generate an air supply control qualified signal for the heat load area i.

[0011] Further, the monitoring and evaluation unit is communicatively connected to the diagnosis unit of the evaporative cooling central air conditioner. The monitoring and evaluation unit sends a qualified air supply control signal to the diagnosis unit of the evaporative cooling central air conditioner. When the diagnosis unit of the evaporative cooling central air conditioner receives the qualified air supply control signal, it analyzes the abnormal operation performance of the evaporative cooling central air conditioner, generates a diagnostic alarm signal or a diagnostic qualified signal through the analysis, and sends the diagnostic alarm signal or the diagnostic qualified signal to the central air conditioner monitoring center.

[0012] Further, the specific analysis process of the diagnosis unit of the evaporative cooling central air conditioner is as follows: Collect the operation parameters that need to be monitored during the operation of the evaporative cooling central air conditioner, monitor the real-time operation data of the corresponding operation parameters, and judge that the corresponding operation parameters are in a state of suspected diagnosis when the real-time operation data of the corresponding operation parameters do not meet the current corresponding preset data requirements; Obtain the total duration of the corresponding operation parameters in the state of suspected diagnosis within a unit time and mark it as the detected value of the duration of suspicion, and mark the maximum deviation value of the real-time operation data of the corresponding operation parameters compared with the corresponding data requirements within a unit time as the parameter risk value. Perform a weighted sum calculation on the detected value of the duration of suspicion and the parameter risk value to obtain the parameter characteristic value. Compare the parameter characteristic value with the corresponding preset parameter characteristic threshold. If the parameter characteristic value exceeds the corresponding preset parameter characteristic threshold, mark the corresponding operation parameter as an abnormal object; If there are abnormal objects during the operation of the evaporative cooling central air conditioner, generate a diagnostic alarm signal.

[0013] Further, if there are no abnormal objects during the operation of the evaporative cooling central air conditioner, calculate the ratio of the parameter characteristic value of the corresponding operation parameter to the corresponding preset parameter characteristic threshold to obtain the parameter ratio value. Set a group of preset operation correlation weight values for each operation parameter respectively. Multiply the parameter ratio value of the corresponding operation parameter by the corresponding preset operation correlation weight value, and mark the product result as the parameter correlation value of the corresponding operation parameter; Obtain the parameter correlation values of all operation parameters and perform a summation calculation on them to obtain the diagnostic performance coefficient. Compare the diagnostic performance coefficient with the preset diagnostic performance coefficient threshold. If the diagnostic performance coefficient exceeds the preset diagnostic performance coefficient threshold, generate a diagnostic alarm signal; if the diagnostic performance coefficient does not exceed the preset diagnostic performance coefficient threshold, generate a diagnostic qualified signal.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, the dynamic division unit of the heat load area reasonably judges the occupancy status of each space area and realizes area classification. The air flow distribution control unit controls the air flow transportation and the air supply outlet angle of all space areas based on the classification mark information. The monitoring and evaluation unit analyzes the air supply control performance of the corresponding space area, investigates and analyzes the reasons when generating an air supply control abnormal signal, and makes corresponding improvement measures, which is beneficial to ensuring the cooling control effect for each space area and realizing energy efficiency optimization, with high intelligence and automation levels. 2. In the present invention, the monitoring and evaluation unit sends the qualified air supply control signal to the evaporative cooling central air-conditioning diagnosis unit. When the evaporative cooling central air-conditioning diagnosis unit receives the qualified air supply control signal, it analyzes the abnormal operation performance of the evaporative cooling central air-conditioning, and makes reasonable inspection and maintenance measures for the evaporative cooling central air-conditioning when generating a diagnosis alarm signal, ensuring the stable operation of the evaporative cooling central air-conditioning, improving its operation effect and operation safety, and significantly reducing the operation supervision difficulty for the evaporative cooling central air-conditioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings. Figure 1 It is the system block diagram of the first embodiment in the present invention. Figure 2 It is the system block diagram of the second embodiment in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment 1: As Figure 1 shown, the evaporative cooling central air-conditioning air flow distribution regulation system based on energy efficiency optimization proposed by the present invention includes a distribution space acquisition unit, a dynamic division unit of the heat load area, an air flow distribution control unit, a monitoring and evaluation unit, and a central air-conditioning monitoring center. The distribution space acquisition unit obtains several space areas (mainly referring to each office) where the evaporative cooling central air-conditioning conducts air flow distribution, marks the corresponding space area as the heat load area i, and i is a natural number greater than 1. The dynamic division unit of the heat load area marks the heat load area i as area A, area B or area C through the monitoring and analysis of personnel flow, and sends the classification mark information of the heat load area i to the air flow distribution control unit and the central air-conditioning monitoring center. It can reasonably judge the personnel residence status of each space area, provide decision-making information support for the automatic control of the air flow distribution control unit, ensure its control effect and achieve energy efficiency optimization. The specific analysis process of the personnel flow monitoring and analysis is as follows: Obtain the real-time number of staying personnel in the heat load area i and calculate the ratio with the area of the heat load area i to obtain the personnel residence value. Compare the personnel residence value with the preset personnel residence threshold. If the personnel residence value exceeds the preset personnel residence threshold, it indicates that the personnel in the heat load area i are relatively dense, and it is judged that the heat load area i is in a state of personnel aggregation; Obtain the total duration of the heat load area i in the state of personnel aggregation per unit time and mark it as the aggregation detection value, and mark the average value and the maximum value of the personnel residence value of the heat load area i per unit time as the residence performance value and the residence amplitude value respectively; Calculate the load area classification coefficient by weighted summation of the aggregation detection value, the residence performance value and the residence amplitude value; assign corresponding preset weight coefficients to the aggregation detection value, the residence performance value and the residence amplitude value respectively, multiply the aggregation detection value, the residence performance value and the residence amplitude value by the corresponding preset weight coefficients respectively, and mark the sum value of the three groups of product results as the load area classification coefficient; moreover, the larger the value of the load area classification coefficient, the higher the personnel activity in the heat load area i, and the more necessary it is to ensure its cooling control effect to improve the comfort of this area; Compare the load area classification coefficient with the preset load area classification coefficient range. If the load area classification coefficient exceeds the maximum value of the preset load area classification coefficient range, it indicates that the personnel activity in the heat load area i is extremely high, and the heat load area i is marked as area A; if the load area classification coefficient is within the preset load area classification coefficient range, it indicates that the personnel activity in the heat load area i is relatively high, and the heat load area i is marked as area B; if the load area classification coefficient does not exceed the minimum value of the preset load area classification coefficient range, it indicates that the personnel activity in the heat load area i is relatively low, and the heat load area i is marked as area C.

[0018] The air flow distribution control unit conducts air flow transportation control and air supply outlet angle control for all spatial areas based on the classification mark information, and decreases the air supply volume per unit volume (i.e., the ratio of the real-time total air supply volume of the corresponding spatial area to the volume of the corresponding spatial area) in Area A, Area B, and Area C (i.e., the air supply volume per unit volume in Area A > Area B > Area C), and decreases the upward inclination angle of the air supply outlets in Area A, Area B, and Area C (i.e., the upward inclination angle of the air supply outlets in Area A > Area B > Area C, to avoid direct blowing on people), and sends the control information to the central air-conditioning monitoring center and the monitoring and evaluation unit, which is beneficial to improving the cooling control effect for each spatial area and achieving energy efficiency optimization, with high levels of intelligence and automation.

[0019] The monitoring and evaluation unit analyzes the air supply control performance in the heat load area i, generates a qualified signal or an abnormal signal for the air supply control in the heat load area i through the analysis, and sends the qualified signal or the abnormal signal for the air supply control in the heat load area i to the central air-conditioning monitoring center; When the central air-conditioning monitoring center receives the abnormal signal for the air supply control, it issues a corresponding warning to remind the background supervisors to conduct a cause investigation and analysis and take corresponding improvement measures, significantly reducing the supervision difficulty in the air flow distribution control process and improving the response efficiency of the background supervisors, and further ensuring the cooling control effect for each spatial area; the specific analysis process of the monitoring and evaluation unit is as follows: All the air supply outlets distributed in the heat load area i are obtained, the execution deviation value of the upward inclination angle of the corresponding air supply outlet is marked as the upward inclination abnormal value, and the execution deviation value of the real-time air supply volume of the corresponding air supply outlet is obtained and marked as the air supply control deviation value. The upward inclination abnormal value and the air supply control deviation value are respectively compared with the preset upward inclination abnormal threshold and the preset air supply control deviation threshold in terms of numerical values. If the upward inclination abnormal value or the air supply control deviation value exceeds the corresponding preset threshold, it indicates that the air supply control performance for the corresponding air supply outlet within a unit time is poor, and it is determined that the corresponding air supply outlet is in the state of air supply control abnormality; The total duration during which the corresponding air supply outlet is in the state of air supply control abnormality within a unit time is obtained and marked as the air supply control abnormality situation value. The air supply control abnormality situation value is compared with the preset air supply control abnormality situation threshold in terms of numerical values. If the air supply control abnormality situation value exceeds the preset air supply control abnormality situation threshold, the corresponding air supply outlet is marked as the controlled abnormal air supply outlet; if the air supply control abnormality situation value does not exceed the preset air supply control abnormality situation threshold, the average value of the upward inclination abnormal values and the average value of the air supply control deviation values corresponding to the corresponding air supply outlet within a unit time are respectively marked as the upward inclination non-optimal value and the air supply non-optimal value; The monitoring and evaluation coefficient is calculated by weighted summation of the air supply control abnormal condition value, the upward slope non-optimal value, and the air supply non-optimal value; corresponding preset weight coefficients are assigned to the air supply control abnormal condition value, the upward slope non-optimal value, and the air supply non-optimal value respectively. The air supply control abnormal condition value, the upward slope non-optimal value, and the air supply non-optimal value are multiplied by the corresponding preset weight coefficients respectively, and the sum value of the three groups of product results is marked as the monitoring and evaluation coefficient; moreover, the larger the value of the monitoring and evaluation coefficient, the worse the comprehensive air supply control performance for the corresponding air supply outlet per unit time. The monitoring and evaluation coefficient is numerically compared with the preset monitoring and evaluation coefficient threshold. If the monitoring and evaluation coefficient exceeds the preset monitoring and evaluation coefficient threshold, indicating that the comprehensive air supply control performance for the corresponding air supply outlet per unit time is poor, then the corresponding air supply outlet is marked as an abnormal control air supply outlet. If there is an abnormal control air supply outlet in the heat load area i, indicating that there is an abnormality in the air supply control for the heat load area i, then an air supply control abnormal signal for the heat load area i is generated.

[0020] Furthermore, if there is no abnormal control air supply outlet in the heat load area i, then several detection time points are set within a unit time. The ratio of the number of air supply outlets in the heat load area i in the air supply control abnormal state at the corresponding detection time points is marked as the cooperation abnormal occupancy value. The cooperation abnormal occupancy value is numerically compared with the preset cooperation abnormal occupancy threshold. If the cooperation abnormal occupancy value exceeds the preset cooperation abnormal occupancy threshold, indicating that the overall air supply condition for the heat load area i at the corresponding detection time point is not good, then the corresponding detection time point is marked as a cooperation abnormal time point; The number of cooperation abnormal time points corresponding to the heat load area i within a unit time is collected and the ratio is calculated with the total number of detection time points to obtain the cooperation abnormal detection value. The cooperation abnormal detection value is numerically compared with the preset cooperation abnormal detection threshold. If the cooperation abnormal detection value exceeds the preset cooperation abnormal detection threshold, indicating that the air supply control for the heat load area i needs to be optimized and the supervision needs to be strengthened, then an air supply control abnormal signal for the heat load area i is generated; if the cooperation abnormal detection value does not exceed the preset cooperation abnormal detection threshold, indicating that the air supply control for the heat load area i is relatively accurate, then an air supply control qualified signal for the heat load area i is generated.

[0021] Embodiment 2: As Figure 2 shown, the difference between this embodiment and Embodiment 1 is that the monitoring and evaluation unit is communicatively connected to the evaporative cooling central air-conditioning diagnosis unit. The monitoring and evaluation unit sends the air supply control qualified signal to the evaporative cooling central air-conditioning diagnosis unit. When the evaporative cooling central air-conditioning diagnosis unit receives the air supply control qualified signal, it analyzes the abnormal operation performance of the evaporative cooling central air-conditioning; Generate diagnostic alarm signals or diagnostic qualified signals through analysis, and send the diagnostic alarm signals or diagnostic qualified signals to the central air-conditioning monitoring center. When the central air-conditioning monitoring center receives a diagnostic alarm signal, it issues a corresponding early warning to remind the background supervisors to make reasonable inspection and repair measures for the evaporative cooling central air-conditioning in a timely manner, ensure the stable operation of the evaporative cooling central air-conditioning, and improve its operation effect and operation safety. The specific analysis process of the evaporative cooling central air-conditioning diagnosis unit is as follows: Collect the operating parameters that need to be monitored during the operation of the evaporative cooling central air-conditioning (such as parameters like fan speed, cooling water flow, and evaporator surface temperature), monitor the real-time operating data of the corresponding operating parameters, and determine that the corresponding operating parameters are in a state of diagnostic doubt when the real-time operating data of the corresponding operating parameters do not meet the current corresponding preset data requirements; Obtain the total duration of the corresponding operating parameters in the state of diagnostic doubt within a unit time and mark it as the doubt duration detection value, and mark the maximum deviation value of the real-time operating data of the corresponding operating parameters compared with the corresponding data requirement within a unit time as the parameter risk value. Calculate the weighted sum of the doubt duration detection value and the parameter risk value to obtain the parameter characteristic value, and compare the parameter characteristic value with the corresponding preset parameter characteristic threshold. If the parameter characteristic value exceeds the corresponding preset parameter characteristic threshold, mark the corresponding operating parameter as an abnormal object; If there are abnormal objects during the operation of the evaporative cooling central air-conditioning, it indicates that there are potential hazards in the operation of the evaporative cooling central air-conditioning in general, and then generate a diagnostic alarm signal; if there are no abnormal objects during the operation of the evaporative cooling central air-conditioning, calculate the ratio of the parameter characteristic value of the corresponding operating parameter to the corresponding preset parameter characteristic threshold to obtain the parameter ratio value; Set a set of preset operation correlation weight values for each operating parameter. Among them, the values of the preset operation correlation weight values are all positive numbers, and the more important the corresponding operating parameter is for the stable operation of the evaporative cooling central air-conditioning, the larger the value of the preset operation correlation weight value matching it; multiply the parameter ratio value of the corresponding operating parameter by the corresponding preset operation correlation weight value, and mark the product result as the parameter correlation value of the corresponding operating parameter; Obtain the parameter correlation values of all operating parameters and calculate their sum to obtain the diagnostic performance coefficient. Compare the diagnostic performance coefficient with the preset diagnostic performance coefficient threshold. If the diagnostic performance coefficient exceeds the preset diagnostic performance coefficient threshold, it indicates that the operation status of the evaporative cooling central air-conditioning is poor in general, and then generate a diagnostic alarm signal; if the diagnostic performance coefficient does not exceed the preset diagnostic performance coefficient threshold, it indicates that the operation status of the evaporative cooling central air-conditioning is good in general, and then generate a diagnostic qualified signal.

[0022] Working principle of the present invention: In use, several spatial regions for air flow distribution of the evaporative cooling central air conditioner are obtained through the distribution space acquisition unit. The heat load zone dynamic division unit reasonably judges the personnel residence status of each spatial region through personnel flow monitoring and analysis, and provides decision information support for the automatic control of the air flow distribution control unit. The air flow distribution control unit controls the air flow delivery and the air supply outlet angle of all spatial regions based on the classification marking information, which is beneficial to improving the cooling control effect for each spatial region and realizing energy efficiency optimization. Moreover, the monitoring and evaluation unit analyzes the air supply control performance of the corresponding spatial region, investigates and analyzes the reasons when an air supply control abnormal signal is generated, and makes corresponding improvement measures, significantly reducing the supervision difficulty in the air flow distribution control process and improving the response efficiency of the background supervisors, further ensuring the cooling control effect for each spatial region, with high intelligence and automation levels.

[0023] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization, characterized in that: It includes an allocation space collection unit, a heat load zone dynamic division unit, an air flow distribution control unit, a monitoring and evaluation unit, and a central air conditioning monitoring center; the allocation space collection unit obtains several spatial areas where the evaporative cooling central air conditioning performs air flow distribution, and marks the corresponding spatial area as a heat load zone i, where i is a natural number greater than 1; the heat load zone dynamic division unit marks the heat load zone i as zone A, zone B, or zone C through personnel flow monitoring and analysis; The airflow distribution control unit performs airflow delivery control and air outlet angle control on all spatial areas based on the classification mark information. The monitoring and evaluation unit analyzes the air supply control performance of the heat load zone i, and generates an air supply control qualified signal or an air supply control abnormal signal for the heat load zone i through analysis, and sends the air supply control qualified signal or the air supply control abnormal signal for the heat load zone i to the central air conditioning monitoring center.

2. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 1 is characterized in that: The specific analysis process of personnel flow monitoring and analysis is as follows: through analysis to obtain the load zone classification coefficient of heat load zone i, if the load zone classification coefficient exceeds the maximum value of the preset load zone classification coefficient range, the heat load zone i is marked as zone A; if the load zone classification coefficient is within the preset load zone classification coefficient range, the heat load zone i is marked as zone B; if the load zone classification coefficient does not exceed the minimum value of the preset load zone classification coefficient range, the heat load zone i is marked as zone C.

3. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 2 is characterized in that: The specific analysis and acquisition method of the load zone classification coefficient is as follows: The total duration of the heat load zone i in the state of personnel gathering per unit time is obtained and marked as the gathering detection value, and the average and maximum values ​​of the personnel residence values ​​in the heat load zone i per unit time are marked as the residence performance value and the residence table amplitude, respectively; the load zone classification coefficient is calculated by weighted summing of the gathering detection value, the residence performance value and the residence table amplitude.

4. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 1 is characterized in that: The specific control strategy of the airflow distribution control unit for airflow delivery control and air supply outlet angle control is: the air supply volume per unit volume of areas A, B and C decreases gradually, and the upward inclination angle of the air supply outlets in areas A, B and C decreases gradually.

5. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 1 is characterized in that: The specific analysis process of the monitoring and evaluation unit includes: All air outlets distributed in heat load zone i are obtained. If the upward slope abnormal value or the air supply control deviation value exceeds the corresponding preset threshold, the corresponding air supply outlet is judged to be in an abnormal air supply control state. Through analysis, it is determined whether there is an abnormally controlled air outlet in heat load zone i within a unit time. If there is an abnormally controlled air outlet in heat load zone i, an abnormal air supply control signal of heat load zone i is generated.

6. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 5 is characterized in that: The analysis and judgment methods for abnormal air supply outlets are as follows: If the air supply control abnormal condition value exceeds the preset air supply control abnormal condition threshold, the corresponding air supply outlet will be marked as a controlled abnormal air supply outlet; if the air supply control abnormal condition value does not exceed the preset air supply control abnormal condition threshold, the monitoring and evaluation coefficient is obtained by weighted summing up the air supply control abnormal condition value, the upward non-optimal value and the air supply non-optimal value. If the monitoring and evaluation coefficient exceeds the preset monitoring and evaluation coefficient threshold, the corresponding air supply outlet will be marked as a controlled abnormal air supply outlet.

7. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 5 is characterized in that: If there is no abnormally controlled air supply outlet in heat load zone i, the number of abnormal coordination time points corresponding to heat load zone i in unit time is collected and the ratio is calculated with the total number of detection time points to obtain the abnormal coordination detection value. If the abnormal coordination detection value exceeds the preset abnormal coordination detection threshold, an abnormal air supply control signal of heat load zone i is generated; if the abnormal coordination detection value does not exceed the preset abnormal coordination detection threshold, a qualified air supply control signal of heat load zone i is generated.

8. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 1 is characterized in that: The monitoring and evaluation unit is communicatively connected to the evaporative cooling central air conditioning diagnostic unit. When the evaporative cooling central air conditioning diagnostic unit receives the air supply control qualified signal, it analyzes the abnormal operation performance of the evaporative cooling central air conditioning and sends the diagnostic alarm signal or the diagnostic qualified signal to the central air conditioning monitoring center.

9. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 8, characterized in that: The specific analysis process of the evaporative cooling central air-conditioning diagnostic unit is as follows: the operating parameters that need to be monitored when the evaporative cooling central air-conditioning is in operation are collected, the real-time operating data of the corresponding operating parameters are monitored, and the parameter characteristic value is calculated by weighted summation of the doubtful time detection value and the parameter risk value. If the parameter characteristic value exceeds the corresponding preset parameter characteristic threshold, the corresponding operating parameter is marked as an abnormal object; if there is an abnormal object during the operation of the evaporative cooling central air-conditioning, a diagnostic alarm signal is generated.

10. The evaporative cooling central air conditioning air flow distribution control system based on energy efficiency optimization according to claim 9, characterized in that: If there are no abnormal objects during the operation of the evaporative cooling central air conditioner, the parameter association values ​​of all operating parameters are obtained and summed up to obtain the diagnostic performance coefficient. If the diagnostic performance coefficient exceeds the preset diagnostic performance coefficient threshold, a diagnostic alarm signal is generated; if the diagnostic performance coefficient does not exceed the preset diagnostic performance coefficient threshold, a diagnostic pass signal is generated.

Images