Environmental control system, method and storage medium for producing a space

Abstract

This application belongs to the field of production control technology, specifically relating to an environmental control system, method, and storage medium for production spaces. It includes an air supply module, an indoor air treatment module, an exhaust module, and a control module. The air supply module provides fresh air to the production space; the indoor air treatment module handles the heat and humidity load of the circulating air within the production space; the exhaust module exhausts air from the production space; and the control module controls the air supply module to operate at a constant airflow, and adjusts the exhaust module's airflow by acquiring the actual supply and exhaust volumes to create a stable negative pressure within the production space. This system effectively solves the application bottlenecks of traditional technologies in special protection scenarios. The dual-system architecture significantly reduces reliance on large ducts and ventilation trenches, adapts to space constraints imposed by thick wall structures, and effectively prevents the leakage of potentially hazardous substances.

Description

Technical Field

[0001] This application belongs to the field of production control technology, specifically relating to an environmental control system, method, and storage medium for production spaces. Background Technology

[0002] Some equipment production and testing environments have extremely high requirements for spatial parameter control, especially medical device equipment, such as production and testing scenarios involving radioactive materials. These environments must meet stringent radiation protection standards, and their building structures typically employ thick protective walls and thick concrete doors to prevent radiation penetration and potential safety hazards. Simultaneously, the testing space must maintain stable temperature, humidity, and a slightly negative pressure state throughout the year to ensure the stability of equipment operation and the accuracy of test data.

[0003] However, due to the unique characteristics of the building structure, electromechanical pipelines must be connected through underground ventilation trenches and cable trenches, and straight-line pre-installed ducts are not permitted within the space, posing significant challenges to the installation and commissioning of traditional ventilation systems. Furthermore, during testing, it is necessary to prevent internal air leakage, maintain a negative pressure state within the space through precise differential pressure control, and handle any potential radiation gases through a high-altitude exhaust system. Existing technologies face significant technical bottlenecks when dealing with thick-walled structures, pressure fluctuations caused by frequent opening and closing of protective doors, and the need for independent temperature and humidity control within confined spaces.

[0004] Therefore, there is an urgent need for a production environment parameter control strategy adapted to special building structures to address the above problems. Summary of the Invention

[0005] To address the aforementioned issues, this application provides an environmental control system, method, and storage medium for production spaces.

[0006] In a first aspect, this application provides an environmental control system for a production space, the system comprising: an air supply module, an indoor air handling module, an exhaust module, and a control module, wherein...

[0007] The air supply module is used to provide fresh air to the production space;

[0008] The indoor air handling module is used to handle the heat and humidity load of the circulating air inside the production space;

[0009] The exhaust module is used to exhaust air from the production space;

[0010] The control module is used to control the air supply processing module to operate at a constant air volume, and to adjust the air supply volume of the exhaust module by acquiring the actual air supply volume and the actual exhaust volume respectively, so as to form a stable negative pressure in the production space.

[0011] In one possible implementation, the indoor air handling module includes a multi-split air conditioning unit, the indoor unit of which is located within the production space and is used to circulate and heat or cool the indoor air in the production space.

[0012] In one possible implementation, the air supply treatment module includes a combined air handling unit, which, along the air supply direction, includes at least: a filter section, a surface cooling section, a heating section, and a fan section.

[0013] In one possible implementation, the combined air handling unit is specifically used for:

[0014] In high-temperature operation mode, fresh air is processed sequentially through the filtration section, the surface cooling section, and the heating section.

[0015] In low-temperature operation mode, fresh air is processed sequentially through the filtration section and the heating section.

[0016] Secondly, this application provides an environmental control method for a production space, applied to an environmental control system for a production space as described in any one of the first aspects, the method comprising:

[0017] Turn on the exhaust module and fully open the regulating valve of the exhaust duct;

[0018] The air supply processing module is activated, and the actual air supply volume on the air supply duct is detected by the first wind speed sensor, and the actual air exhaust volume on the exhaust duct is detected by the second wind speed sensor.

[0019] Based on the air pressure difference between the actual air supply volume and the actual air exhaust volume, the air supply volume of the exhaust module is adjusted to create a stable negative pressure in the production space.

[0020] In one possible implementation, the method further includes:

[0021] The air supply pressure in the air supply duct is detected by a pressure sensor;

[0022] The frequency of the fan in the air supply processing module is adjusted according to the air supply pressure to keep the air supply volume of the air supply processing module constant.

[0023] In one possible implementation, the method further includes:

[0024] Collect the temperature change rate within the production space and / or the humidity of the air outlet from the air supply module;

[0025] Based on the temperature change rate and / or the outlet air humidity, the operating load of the indoor air handling module and the supply air handling module for handling the circulating air heat and humidity load is allocated.

[0026] In one possible implementation, the step of allocating the operating load of the indoor air handling module and the supply air handling module for handling the circulating air heat and humidity load based on the temperature change rate and / or the outlet air humidity includes:

[0027] If the outlet air humidity approaches the preset indoor humidity value, the dehumidification operation intensity of the indoor air treatment module will be reduced.

[0028] If the temperature change rate exceeds the preset change rate, the cooling operation of the indoor air handling module will be activated or enhanced, and the supply air temperature of the supply air handling module will be reduced.

[0029] In one possible implementation, the method further includes:

[0030] Obtain the operating power of the process equipment within the production space;

[0031] If the operating power is greater than the first preset power, then the air volume difference threshold used to maintain stable negative pressure is increased.

[0032] If the operating power is less than the second preset power, then the air volume difference threshold is set as a baseline value, and the first preset power is greater than or equal to the second preset power.

[0033] Thirdly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any of the second aspects.

[0034] The environmental control system, method, and storage medium provided in this application for production spaces decompose the overall heat and humidity load of the production space. An independent indoor air handling module handles the internal circulating load, while a centralized outdoor fresh air handling module handles the outdoor fresh air load, thus overcoming the constraints of limited duct installation space. Simultaneously, a constant supply air and variable exhaust air control strategy is adopted. By monitoring and adjusting the difference between the supply and exhaust air volumes in real time, the required micro-negative pressure state of the space is maintained indirectly and precisely. This system effectively solves the application bottlenecks of traditional technologies in special protection scenarios. First, the dual-system architecture significantly reduces the reliance on large ducts and ventilation channels, adapting to the space constraints imposed by thick wall structures. Second, based on indirect differential pressure control using airflow differences, a stable micro-negative pressure is reliably achieved, effectively preventing the leakage of potentially harmful substances and ensuring personnel safety and environmental compliance. Finally, by combining constant supply air with dynamic exhaust air adjustment, the system can automatically resist disturbances such as the opening and closing of protective doors and achieve independent and precise control of temperature and humidity, thereby ensuring the year-round stability of test environment parameters and the reliability of equipment operation data. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0036] Figure 1 This is a schematic diagram illustrating an application scenario provided in the embodiments of this application;

[0037] Figure 2 A structural diagram of an environmental control system for a production space provided in an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the structure of the combined air handling unit provided in the embodiments of this application;

[0039] Figure 4 The flow chart of the environmental control method for production space provided in the embodiments of this application Figure 1 ;

[0040] Figure 5 The flow chart of the environmental control method for production space provided in the embodiments of this application Figure 2 .

[0041] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0044] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0045] Existing technologies have the following problems in production testing scenarios:

[0046] Traditional differential pressure sensors require drilling holes in thick walls to measure pressure, which can cause signal delays and data instability due to bends or angled pipes. When the protective door is opened or closed, the indoor pressure balances instantly, and the sensor misinterprets the signal, triggering the fan to frequently change frequency. This results in high energy consumption and easy damage to the system.

[0047] Combined air handling units require a large air volume to meet the mixed processing needs, but due to the size of underground ventilation trenches, traditional duct cross-sectional areas are too large (e.g., 500×250mm), occupying space and costing a lot of money; the mixed processing of fresh air load and indoor equipment heat dissipation can easily lead to temperature and humidity fluctuations, affecting the accuracy of testing.

[0048] Existing solutions rely on straight pipe pressure tapping or large-size ducts, which are incompatible with special building structures such as thick walls and underground ventilation trenches, and are complex and costly to construct.

[0049] To address the problems in existing technologies, this application provides an environmental control system for production spaces. The system decomposes the overall heat and humidity load of the production space, with an independent indoor air handling module handling the internal circulation load and a centralized outdoor fresh air handling module handling the outdoor fresh air load, thus overcoming the constraints of limited duct installation space. Simultaneously, a constant supply air and variable exhaust air control strategy is adopted. By monitoring and adjusting the difference between the supply and exhaust air volumes in real time, the required micro-negative pressure state of the space is maintained indirectly and precisely. This system effectively solves the application bottlenecks of traditional technologies in special protection scenarios. First, the dual-system architecture significantly reduces the reliance on large ducts and ventilation channels, adapting to the space constraints imposed by thick wall structures. Second, based on indirect differential pressure control using airflow differences, a stable micro-negative pressure is reliably achieved, effectively preventing the leakage of potentially harmful substances and ensuring personnel safety and environmental compliance. Finally, by combining constant supply air with dynamic exhaust air adjustment, the system can automatically resist disturbances such as the opening and closing of protective doors and achieve independent and precise control of temperature and humidity, thereby ensuring the year-round stability of test environment parameters and the reliability of equipment operation data.

[0050] Figure 1 This is a schematic diagram illustrating an application scenario provided in an embodiment of this application. For example... Figure 1 As shown, the current production space is a sealed radiation protection structure including a 2.7-meter-thick main protective wall and an 800mm concrete protective door, and the environmental control system of this application is deployed therein.

[0051] The air supply module delivers treated fresh air to the test room, control room, and equipment room via pre-embedded air channels. The control room is used by test personnel to monitor whether the various indicators of equipment operation are up to standard, while the equipment room is used to house the supporting energy equipment required by the main unit in the test room, such as power supply, air supply, and cooling water supply.

[0052] The air supply branch pipes leading to the test room, control room, and equipment room are equipped with electrically operated regulating valves N1, N2, and N3. During the initial system commissioning, the opening of these valves is adjusted to the set position and locked according to the design air volume requirements of each area. Their openings will remain fixed during subsequent normal operation, thus ensuring a constant proportional distribution of air volume to each area. Meanwhile, the electrically operated regulating valve N4 on the exhaust main duct remains fully open at all times.

[0053] Indoor air handling modules can be suspended or wall-mounted at the air outlets inside each room to handle the internal heat and humidity load locally. This architecture separates the large-scale fresh air handling function from the decentralized indoor load handling function, adapting to the extreme constraints of thick wall structures on ductwork traversing space.

[0054] Furthermore, the test room is actively ventilated through a centralized exhaust module, and the exhaust volume is compared with the supply air volume in real time. The control module implements a constant supply air volume and variable exhaust air volume strategy to precisely control the exhaust air volume of the test room to always be greater than its supply air volume, thereby forming and maintaining the required stable micro-negative pressure in the core area and preventing the leakage of internal radiant gases.

[0055] The technical solutions of this application and how they solve the aforementioned technical problems are described in detail below with specific embodiments. These specific embodiments may exist independently or in combination with each other. Identical or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0056] This embodiment provides an environmental control system for production spaces. Figure 2 This is a structural diagram of an environmental control system for a production space provided in an embodiment of this application. The system 20 includes: an air supply module 201, an indoor air handling module 202, an exhaust module 203, and a control module 204.

[0057] Air supply and treatment module 201 is used to provide fresh air to the production space;

[0058] Indoor air handling module 202 is used to handle the heat and humidity load of the circulating air inside the production space;

[0059] The exhaust module 203 is used for exhaust ventilation of the production space;

[0060] The control module 204 is used to control the air supply treatment module 201 to operate at a constant air volume, and to adjust the air supply volume of the exhaust module 203 by acquiring the actual air supply volume and the actual exhaust volume respectively, so as to form a stable negative pressure in the production space.

[0061] It should be noted that existing technologies make it difficult to install large air ducts within heavy protective structures, and traditional all-air systems occupy enormous space. This system, however, decomposes the overall load, with the indoor air handling module 202 handling the circulating load through small refrigerant pipes, and the supply air handling module 201 specifically handling fresh air, thus greatly reducing the requirements for the cross-sectional area of ​​the air duct. Secondly, direct pressure control is prone to failure when faced with the inability to install indoor pressure sensors or disturbances caused by frequent opening and closing of protective doors. This system employs indirect control based on airflow monitoring, fundamentally avoiding the sensor installation difficulties, and enhances the system's anti-interference capability through a constant supply and variable exhaust strategy.

[0062] For example, during startup, control module 204 can prioritize activating the exhaust module to establish initial negative pressure, and then activate the supply air processing module 201, locking a constant supply air volume through its duct pressure sensor, using this as the control benchmark. During operation, control module 204 monitors the supply and exhaust air volumes in real time via a wind speed sensor and calculates the difference between them. By adjusting the exhaust fan frequency, this difference dynamically matches a preset safety threshold, thereby indirectly and accurately maintaining indoor negative pressure. For temperature and humidity control, the logic further coordinates this process; for example, when the supply air humidity is too low, the dehumidification load of the indoor unit will be reduced first, achieving dynamic energy efficiency allocation and parameter stability.

[0063] For example, the indoor air handling module 202 includes a multi-split air conditioning unit, the indoor unit of which is installed in the production space and is used to circulate and heat or cool the indoor air in the production space.

[0064] In this example, a multi-split air conditioning unit refers to a system consisting of one or more outdoor units connected to multiple indoor units via refrigerant piping. Its core feature is that the refrigerant flow rate can be dynamically adjusted according to the actual load demand of each indoor unit. In this embodiment, the multi-split air conditioning unit can be a terminal heat exchange unit installed on the ceiling or wall of a production space (such as a test room, control room, or equipment room). It is responsible for drawing in indoor air from the area and achieving continuous cooling or heating of the circulating air through efficient heat exchange with the refrigerant flowing through it.

[0065] The fresh air module provides hygienic and basic treated air, while the multi-split air conditioning unit acts as an internal circulation processor, focusing on handling the dynamically changing heat and humidity generated by testing equipment, personnel, etc. This division of labor allows the air supply system to avoid being designed to be too large to handle peak internal loads, thus significantly reducing the required fresh air duct cross-sectional area and successfully solving the bottleneck problem of extremely limited duct installation space caused by thick protective walls.

[0066] For example, the air handling module 201 includes a combined air handling unit, which includes at least a filter section, a cooling section, a heating section and a fan section along the air supply direction.

[0067] In this example, a modular air handling unit refers to a modular and integrated professional air handling equipment. Its core feature is that it can combine different functional sections (such as filtration, cooling, heating, humidification, and fans) into a single unit according to actual functional requirements. In this embodiment, the unit, along the air supply direction, includes at least the following in sequence: a filtration section (e.g., G4 grade coarse filter, used to remove particulate matter from fresh air), a surface cooling section (heat exchange coils with chilled water inside, used to cool and dehumidify the air), a heating section (usually electric heating coils or hot water coils, used to heat and raise the air temperature), and a fan section (providing power to overcome system resistance).

[0068] This centralized processing method is completely decoupled from the indoor air handling module that handles the internal load, allowing the fresh air system to focus solely on processing the fresh air to a suitable intermediate state. This significantly reduces the capacity requirements of the fresh air unit and the size of the air supply duct, adapting to the strict limitations imposed by the building structure on ventilation space.

[0069] Figure 3 This is a schematic diagram of the structure of the combined air handling unit provided in an embodiment of this application. Figure 3 As shown, the combined air handling unit includes: a fresh air section 301; a filter section 302; a surface cooling section 303; a heating section 304; a fan section 305; a flow equalization section 306; and a supply air section 307.

[0070] This combined air handling unit is specifically used for:

[0071] In high-temperature operation mode, the fresh air is processed sequentially through the filter section 302, the surface cooling section 303, and the heating section 304.

[0072] Specifically, fresh air enters the combined air handling unit through the fresh air section 301, is filtered by the filter section 302, undergoes surface cooling and dehumidification in the surface cooling section 303, and is then heated in the heating section 304 to reach the set temperature. After reaching the set temperature, the fresh air is then delivered into the room through the fan section 305, the air distribution section 306, and the air supply section 304 to control the indoor temperature and humidity.

[0073] In low-temperature operation mode, the fresh air is processed sequentially through the filter section 302 and the heating section 304;

[0074] Specifically, fresh air enters the combined air handling unit through the fresh air section 301, is filtered by the filter section 302, is heated by the heating section 304, and then sent into the room through the fan section 305, the air distribution section 306, and the air supply section 304 to control the indoor temperature and humidity.

[0075] In the hot and humid summer, the process of filtration, surface cooling dehumidification, and reheating thoroughly removes excess moisture from the fresh air while precisely controlling the supply air temperature through reheating, avoiding excessively cold indoor air and uncontrolled humidity, and ensuring independent and precise control of temperature and humidity. In the cold and dry winter, the simplified path of filtration and heating directly increases the temperature of the fresh air to meet heating needs, avoiding unnecessary cooling energy consumption.

[0076] The environmental control system for production spaces provided in this embodiment decomposes the overall heat and humidity load of the production space. An independent indoor air handling module handles the internal circulation load, while a centralized outdoor fresh air handling module handles the outdoor fresh air load, thus overcoming the constraints of limited duct installation space. Simultaneously, a constant supply air and variable exhaust air control strategy is adopted. By monitoring and adjusting the difference between the supply and exhaust air volumes in real time, the required micro-negative pressure state of the space is maintained indirectly and precisely. This system effectively solves the application bottlenecks of traditional technologies in special protection scenarios. First, the dual-system architecture significantly reduces the reliance on large ducts and ventilation channels, adapting to the space constraints imposed by thick wall structures. Second, based on indirect differential pressure control using airflow differences, a stable micro-negative pressure is reliably achieved, effectively preventing the leakage of potentially harmful substances and ensuring personnel safety and environmental compliance. Finally, by combining constant supply air with dynamic exhaust air adjustment, the system can automatically resist disturbances such as the opening and closing of protective doors and achieve independent and precise control of temperature and humidity, thereby ensuring the year-round stability of test environment parameters and the reliability of equipment operation data.

[0077] This embodiment provides an environmental control method for production spaces. Figure 4 The flow chart of the environmental control method for production space provided in the embodiments of this application Figure 1 An environmental control system applied to a production space, the method includes:

[0078] S401. Turn on the exhaust module and fully open the regulating valve of the exhaust duct.

[0079] In this step, an initial negative pressure is established and maintained during system startup. This forms a safety barrier, preventing any potential contaminants from leaking out under positive pressure after the air supply starts. Fully opening the exhaust valve minimizes exhaust-side resistance, allowing the exhaust fan to operate within its most easily controllable linear range, laying the foundation for subsequent precise variable air volume adjustments.

[0080] For example, upon receiving a start command, the system can first output a signal to open the regulating valve to 100% opening, and then delay for 1-2 seconds to confirm the valve is fully open. Subsequently, the exhaust module is started and operates at a preset minimum safe frequency. Only after confirming that the exhaust module has successfully started (e.g., receiving operational feedback) is the system allowed to execute S402 to start the supply air module. This logic, through hard timing and status verification, ensures the absolute reliability of the start sequence and avoids misoperation.

[0081] S402. Start the air supply processing module and detect the actual air supply volume on the air supply duct through the first wind speed sensor and the actual air exhaust volume on the exhaust duct through the second wind speed sensor.

[0082] In this step, the air supply module is activated to provide treated air to meet environmental requirements. Simultaneously, the actual supply and exhaust air volumes are acquired in real time via a wind speed sensor. These two data points serve as direct inputs for all subsequent control logic, transforming the physical space pressure control problem into a ventilation system flow control problem, thus bypassing the technical obstacle of not being able to directly measure indoor pressure.

[0083] For example, the analog signal (e.g., 4-20mA) of the wind speed sensor installed on a standard cross-section duct can be directly read, and the volumetric air volume can be calculated in real time based on the duct cross-sectional area. To overcome sensor drift, the system can automatically perform a zero-point calibration procedure once a day during the low-load period in the early morning: all air valves are briefly closed, at which time the theoretical wind speed should be zero, and the system records the sensor reading as an offset, which is deducted in subsequent calculations.

[0084] S403. Adjust the air supply volume of the exhaust module according to the air pressure difference corresponding to the actual air supply volume and the actual exhaust volume, so as to form a stable negative pressure in the production space.

[0085] In this step, a preset target negative pressure can be used as the set value, and the airflow difference calculated in real time can be used as the feedback value. The deviation between the two can be eliminated by adjusting the exhaust fan frequency. This allows the system to automatically resist disturbances caused by door opening and closing, filter clogging, etc., and continuously maintain the negative pressure state required for safety.

[0086] For example, the target air volume difference (target exhaust volume - actual supply volume) can be used as the setpoint, and (actual exhaust volume - actual supply volume) as the process value, to perform proportional (P), integral (I), and derivative (D) calculations. The PID output directly controls the frequency of the exhaust fan's inverter. The integral term eliminates steady-state error, ensuring long-term stability; the derivative term proactively suppresses rapid changes in air volume difference (such as sudden door opening).

[0087] For example, the method also includes:

[0088] The air supply pressure in the air supply duct is detected by a pressure sensor;

[0089] The frequency of the fan in the air supply treatment module is adjusted according to the air supply pressure to keep the air supply volume of the air supply treatment module constant.

[0090] In this example, the static pressure in the air supply duct is directly monitored by a pressure sensor and adjusted to a constant set value corresponding to the target air supply volume. This can fundamentally overcome the fluctuations in air supply volume caused by the gradual clogging of the air supply filter, the drift of the air valve characteristics, or the slight changes in the duct resistance.

[0091] For example, the target setpoint of the air supply pressure (corresponding to the required constant air volume) can be compared with the real-time feedback value of the pressure sensor to calculate the deviation. Subsequently, the PID controller outputs an adjustment command based on the magnitude and trend of this deviation, dynamically adjusting the operating frequency of the blower in the air supply processing module, thereby changing the pressure head provided by the blower, and ultimately stabilizing the actual pressure in the air supply duct near the setpoint.

[0092] For example, the method also includes:

[0093] Obtain the operating power of process equipment within the production space;

[0094] If the operating power is greater than the first preset power, the air volume difference threshold used to maintain stable negative pressure will be increased.

[0095] If the operating power is less than the second preset power, the air volume difference threshold is set to the baseline value, and the first preset power is greater than or equal to the second preset power.

[0096] In this example, considering the significant differences in heat dissipation and moisture dissipation characteristics of the equipment during startup, high-power operation, and shutdown, which substantially affect indoor thermal pressure and airflow organization, a fixed airflow difference threshold would either lead to insufficient exhaust and weakened negative pressure under high equipment load, or excessive exhaust and energy waste when the equipment is shut down. By incorporating the equipment's operating power—a signal directly reflecting its heat load—into the control logic, the system can predictively adjust ventilation standards to achieve more precise matching.

[0097] For example, the total operating power of the process equipment can be obtained in real time through smart meters or monitoring and data acquisition systems in the equipment's power distribution system. This power value will be compared with two preset power thresholds and trigger corresponding actions. For example, for a device with a rated power of 100kW, the first preset power can be set to 80kW (high load threshold), and the second preset power can be set to 20kW (low load / standby threshold). When the real-time power continuously exceeds 80kW for a certain period of time (e.g., 30 seconds), the control module determines that the equipment has entered a high heat dissipation state, and thus adjusts the airflow difference threshold from a baseline value (e.g., 500m³ / h) to a larger value (e.g., 800m³ / h). Conversely, when the power continuously falls below 20kW, the threshold is restored to the baseline value of 500m³ / h.

[0098] In this example, when the equipment is operating under high load, the system proactively maintains stable negative pressure by pre-increasing the airflow difference threshold to ensure sufficient exhaust capacity to cope with the sudden increase in thermal pressure, thus avoiding the risk of control lag or even failure due to excessive disturbances. When the equipment is under low load or shut down, the system automatically reduces the ventilation intensity, significantly reducing the energy consumption of exhaust fans and subsequent treatment equipment.

[0099] The environmental control method for production spaces provided in this embodiment ensures that the system can prioritize and maintain a safety barrier under any operating condition by first activating the exhaust fan and fully opening the valves, effectively preventing the leakage of harmful substances. Simultaneously, by using a constant supply air volume as a baseline and dynamically adjusting the exhaust air volume to maintain a constant airflow difference, it overcomes the problem of pressure sensors being unable to be installed due to the heavy protective structure, significantly improving control stability, system energy efficiency, and equipment lifespan.

[0100] This embodiment provides an environmental control method for production spaces. Figure 5 The flow chart of the environmental control method for production space provided in the embodiments of this application Figure 2 .like Figure 5 As shown, the method includes:

[0101] S501. Turn on the exhaust module and fully open the regulating valve of the exhaust duct, and at the same time start the air supply treatment module.

[0102] S502, Collect the temperature change rate in the production space and / or the humidity of the air outlet of the air supply treatment module.

[0103] In this step, collecting the indoor temperature change rate can sensitively capture sudden changes in sensible heat load caused by the start-up, shutdown, or switching of operating modes of process equipment. Simultaneously, monitoring the outlet air humidity of the supply air handling module directly assesses the fresh air system's ability and effectiveness in handling moisture loads, serving as a direct indicator of whether indoor dehumidification needs have been partially met. Based on these two parameters, the system can distinguish whether the current unstable state originates from internal heat generation or fresh air humidity.

[0104] For example, redundant sensors can be deployed in multiple indoor areas and in supply and return air ducts, and filtering algorithms (such as Kalman filtering) can be used to fuse data and remove noise from the temperature change rate and outlet humidity to obtain more reliable estimates. Furthermore, the algorithm performs short-term trend analysis on the historical sequences of these parameters (such as using sliding window regression) to predict the trend in the next few minutes. For instance, even if the current temperature change rate does not exceed the threshold, but its upward trend is significant, the system can initiate load adjustments in advance.

[0105] S503. Based on the temperature change rate and / or outlet air humidity, allocate the operating load of the indoor air handling module and the supply air handling module to handle the heat and humidity load of the circulating air.

[0106] In this step, based on the type and severity of the disturbance identified in S502, step S503 aims to dynamically determine which module (either a multi-split system or a fresh air handling unit) should be the primary unit for handling a specific load, and the level of coordination between them. The goal is to avoid energy waste caused by two systems handling the same load (e.g., the fresh air unit is already deeply dehumidified, but the indoor unit is still dehumidifying at high power), or insufficient response to emergency disturbances (e.g., relying solely on fresh air for cooling is too slow), thereby pursuing optimal overall operational energy efficiency while ensuring stable environmental parameters.

[0107] For example, a real-time optimization model incorporating the dynamic characteristics of two processing modules can be established. This model can have the objective function of minimizing overall energy consumption or minimizing environmental parameter deviation, with constraints including the current capabilities of each module, the parameters collected in S502, and short-term future predictions. Step S503 essentially solves this optimization problem, determining the optimal setpoints for each module in the next control cycle (such as the target dehumidification capacity of the indoor unit and the target supply air temperature and humidity of the fresh air unit), and then issues commands.

[0108] For example, based on the rate of temperature change and / or outlet air humidity, the operating load of the indoor air handling module and the supply air handling module for handling the heat and humidity load of the circulating air includes:

[0109] If the outlet humidity approaches the preset indoor humidity value, reduce the dehumidification operation intensity of the indoor air handling module.

[0110] If the temperature change rate exceeds the preset change rate, the cooling operation of the indoor air handling module will be activated or enhanced, and the supply air temperature of the supply air handling module will be reduced.

[0111] For example, the control module can compare the deviation between the air humidity and the preset indoor humidity value in real time. When the deviation is less than the set tolerance (i.e., close to it), it is determined that the fresh air system can basically meet the dehumidification requirements, and thus generate an instruction to reduce the dehumidification operation intensity of the indoor air handling module (such as a multi-split unit) (such as increasing the evaporation temperature or reducing the dehumidification operation time). At the same time, the control module continuously calculates the rate of change of indoor temperature. Once it exceeds the preset rate threshold (indicating the presence of a sudden heat source), it immediately generates dual instructions: one instruction prioritizes to start or increase the cooling capacity of the indoor air handling module to quickly absorb sensible heat, and the other instruction simultaneously lowers the supply air temperature setting of the supply air handling module to prepare for the subsequent continuous supply of fresh air at a lower temperature.

[0112] This example avoids the repeated processing of the same moisture load by the indoor and outdoor systems by judging humidity conditions, directly saving energy consumption for reheating and dehumidification; through rapid response to temperature changes and linkage between the two systems, it significantly enhances the system's ability to cope with sudden thermal disturbances, shortens the recovery time of temperature fluctuations, and improves environmental stability.

[0113] The environmental control method for production spaces provided in this embodiment can suppress environmental fluctuations more quickly and accurately by sensing key disturbances in real time and intelligently allocating processing load. At the same time, it fundamentally avoids redundancy and conflicts in processing functions. For example, when there is sufficient fresh air dehumidification, it automatically reduces the dehumidification load on the indoor unit, thereby significantly reducing the overall energy consumption of the system and improving operational economy.

[0114] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the method described above.

[0115] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0116] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0117] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0118] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0119] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0120] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0121] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0122] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An environmental control system for a production space, characterized in that, The system includes: an air supply module, an indoor air handling module, an exhaust module, and a control module, wherein... The air supply module is used to provide fresh air to the production space; The indoor air handling module is used to handle the heat and humidity load of the circulating air inside the production space; The exhaust module is used to exhaust air from the production space; The control module is used to control the air supply processing module to operate at a constant air volume, and to adjust the air supply volume of the exhaust module by acquiring the actual air supply volume and the actual exhaust volume respectively, so as to form a stable negative pressure in the production space.

2. The system according to claim 1, characterized in that, The indoor air handling module includes a multi-split air conditioning unit, the indoor unit of which is installed in the production space and is used to circulate and heat or cool the indoor air in the production space.

3. The system according to claim 1, characterized in that, The air supply treatment module includes a combined air handling unit, which includes at least the following components along the air supply direction: a filter section, a surface cooling section, a heating section, and a fan section.

4. The system according to claim 3, characterized in that, The combined air handling unit is specifically used for: In high-temperature operation mode, fresh air is processed sequentially through the filtration section, the surface cooling section, and the heating section. In low-temperature operation mode, fresh air is processed sequentially through the filtration section and the heating section.

5. An environmental control method for production spaces, characterized in that, The method, applied to an environmental control system for a production space as described in any one of claims 1-4, comprises: Turn on the exhaust module and fully open the regulating valve of the exhaust duct; The air supply processing module is activated, and the actual air supply volume on the air supply duct is detected by the first wind speed sensor, and the actual air exhaust volume on the exhaust duct is detected by the second wind speed sensor. Based on the air pressure difference between the actual air supply volume and the actual air exhaust volume, the air supply volume of the exhaust module is adjusted to create a stable negative pressure in the production space.

6. The method according to claim 5, characterized in that, The method further includes: The air supply pressure in the air supply duct is detected by a pressure sensor; The frequency of the fan in the air supply processing module is adjusted according to the air supply pressure to keep the air supply volume of the air supply processing module constant.

7. The method according to claim 5, characterized in that, The method further includes: Collect the temperature change rate within the production space and / or the humidity of the air outlet from the air supply module; Based on the temperature change rate and / or the outlet air humidity, the operating load of the indoor air handling module and the supply air handling module for handling the circulating air heat and humidity load is allocated.

8. The method according to claim 7, characterized in that, The method of allocating the operating load of the indoor air handling module and the supply air handling module to handle the heat and humidity load of the circulating air based on the temperature change rate and / or the outlet air humidity includes: If the outlet air humidity approaches the preset indoor humidity value, the dehumidification operation intensity of the indoor air treatment module will be reduced. If the temperature change rate exceeds the preset change rate, the cooling operation of the indoor air handling module will be activated or enhanced, and the supply air temperature of the supply air handling module will be reduced.

9. The method according to claim 5, characterized in that, The method further includes: Obtain the operating power of the process equipment within the production space; If the operating power is greater than the first preset power, then the air volume difference threshold used to maintain stable negative pressure is increased. If the operating power is less than the second preset power, then the air volume difference threshold is set as a baseline value, and the first preset power is greater than or equal to the second preset power.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 5-9.

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