A primary return air constant temperature and humidity air conditioning unit water valve energy-saving control system

Abstract

The application provides a primary return air constant temperature and humidity air conditioning unit water valve energy-saving control system, comprising: a data input module including a temperature and humidity sensor arranged in a purification area; the temperature and humidity sensor is electrically connected with a controller; a parameter output module including a cooling valve, a heating valve and a humidifying valve arranged in a fresh air duct, the controller is electrically connected with the cooling valve, the heating valve and the humidifying valve respectively; the fresh air duct is connected with a return air outlet and a supply air outlet of the purification area through a return air duct and a supply air duct respectively, and an exhaust air outlet of the purification area is communicated with an exhaust air duct. The controller is electrically connected with each module, the data acquisition, processing and control instruction output are realized, the temperature and humidity sensor collects the temperature and humidity data of the purification area in real time, and the controller accurately adjusts and controls the cooling valve, the heating valve and the humidifying valve of the fresh air duct according to the temperature and humidity data, so that the accurate control of the temperature and humidity of the purification area is realized, the problems of cold and heat offset and large energy loss of the traditional constant temperature and humidity air conditioner are solved, and energy-saving operation is realized.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving control of constant temperature and humidity air conditioning, and in particular to an energy-saving control system for a single-pass return air constant temperature and humidity air conditioning unit. Background Technology

[0002] A constant temperature and humidity air conditioner is a specialized air conditioning system for high-precision control of temperature and humidity. It is widely used in environments with stringent environmental requirements, such as laboratories, data centers, pharmaceutical production facilities, electronics manufacturing plants, and museums. Its core feature is the ability to stabilize temperature and humidity within a set range (e.g., temperature ±0.5℃, humidity ±2%RH) while maintaining air cleanliness. Therefore, a constant temperature and humidity air conditioning system must possess cooling, dehumidification, heating, and humidification functions, along with a sophisticated automatic control system. Traditional constant temperature and humidity air conditioners typically use a constant dew point temperature regulation method, ensuring that the temperature and humidity of the air after cooling are simultaneously lower than the supply air parameters. Heaters and humidifiers are then used for heat and humidity compensation to achieve the target temperature and humidity. This process sometimes results in heat and cold cancellation, leading to significant energy loss. Therefore, this invention proposes an energy-saving control system for the water valve of a single-pass return air constant temperature and humidity air conditioning unit to at least partially address the problems inherent in existing technologies. Utility Model Content

[0003] In view of the aforementioned problems, this application is made to provide an energy-saving control system for the water valve of a single-pass return air constant temperature and humidity air conditioning unit that overcomes or at least partially solves the aforementioned problems, enabling the constant temperature and humidity air conditioning unit to operate efficiently and energy-savingly, and reducing system power consumption.

[0004] One embodiment of this application discloses an energy-saving control system for the water valve of a single-pass return air constant temperature and humidity air conditioning unit, including:

[0005] The controller is electrically connected to the data input module, parameter setting module, parameter calculation module, and parameter output module, respectively.

[0006] The data input module includes a temperature and humidity sensor located in the clean area; the temperature and humidity sensor is electrically connected to the controller.

[0007] The parameter output module includes a cooling valve, a heating valve, and a humidifying valve installed in the fresh air duct, and the controller is electrically connected to the cooling valve, the heating valve, and the humidifying valve respectively.

[0008] The fresh air duct is connected to the return air inlet and the supply air outlet of the purification area through the return air duct and the supply air duct, respectively, and the exhaust air outlet of the purification area is connected to the exhaust air duct.

[0009] The airflow path of this system is from the air inlet of the fresh air duct to the air supply duct, through the air supply duct to the purification area, and then from the return air inlet through the return air duct to the fresh air duct, and from the exhaust air inlet through the exhaust air duct to the outside of the purification area.

[0010] Optionally, the humidifying valve is connected to a humidifier, which includes an electrode humidifier, a steam humidifier, and a spray humidifier.

[0011] Optionally, the fresh air duct includes a fresh air primary filter section, a fresh air medium filter section, a primary fresh air return section, a fan section, a flow equalization section, and a medium-efficiency air supply section arranged sequentially.

[0012] The primary fresh air return section is connected to the return air inlet of the purification zone through the return air duct, and the medium-efficiency air supply section is connected to the air supply outlet of the purification zone through the air supply duct.

[0013] An electric regulating valve and a surface cooler are provided between the primary fresh air return section and the fan section;

[0014] A heating valve and a humidifying valve are sequentially installed between the fan section and the flow equalization section. The heating valve is connected to a heater, and the humidifying valve is connected to a humidifier.

[0015] The air inlet of the fresh air duct is connected to the primary fresh air filter section.

[0016] Optionally, the heating valve and the humidifying valve are respectively an electric heating valve and an electric humidifying valve.

[0017] Optionally, the primary filter section, the fresh air exchange filter section, the primary fresh air return section, the fan section, and the medium-efficiency air supply section are all equipped with filter differential pressure switches.

[0018] Optionally, the purification zone is also equipped with a differential pressure transmitter electrically connected to the controller.

[0019] Optionally, both the supply air duct and the exhaust air duct are equipped with fire dampers and damper actuators.

[0020] Optionally, the exhaust duct is equipped with an exhaust fan and a check valve, and a rainproof louver is provided at the end of the exhaust duct.

[0021] Optionally, the air inlet of the fresh air duct is also equipped with a regulating valve and a filter.

[0022] Optionally, the return air duct, supply air duct, and exhaust air duct are all equipped with filters.

[0023] This application has the following advantages:

[0024] In the embodiments of this application, a controller is electrically connected to a data input module, a parameter setting module, a parameter calculation module, and a parameter output module, respectively. The data input module includes a temperature and humidity sensor installed in the clean area; the temperature and humidity sensor is electrically connected to the controller. The parameter output module includes a cooling valve, a heating valve, and a humidifying valve installed in the fresh air duct; the controller is electrically connected to the cooling valve, the heating valve, and the humidifying valve, respectively. The fresh air duct is connected to the return air inlet and the supply air outlet of the clean area through a return air duct and a supply air duct, respectively; the exhaust outlet of the clean area is connected to the exhaust air duct. The air path of the system is from the air inlet of the fresh air duct to the supply air duct, through the supply air outlet to the clean area, and then from the return air inlet through the return air duct to the fresh air duct, and from the exhaust outlet through the exhaust air duct to the outside of the clean area. The controller is electrically connected to each module to realize data acquisition, processing and control command output. Temperature and humidity sensors collect temperature and humidity data of the clean area in real time. The controller accurately adjusts the surface cooling valve, heating valve and humidification valve of the fresh air duct, thereby achieving precise control of temperature and humidity in the clean area. This solves the problems of heat and cold cancellation and large energy loss of traditional constant temperature and humidity air conditioners, and achieves energy-saving operation. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the module structure of a water valve energy-saving control system for a single-pass return air constant temperature and humidity air conditioning unit provided in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of an energy-saving control system for a water valve of a single-pass return air constant temperature and humidity air conditioning unit provided in one embodiment of this application;

[0028] Figure 3 This is a schematic diagram of an air conditioning system according to an embodiment of the present application, which is a water valve energy-saving control system for a single-pass return air constant temperature and humidity air conditioning unit.

[0029] Figure 4 This is a chilled water valve control logic diagram of a single-pass return air constant temperature and humidity air conditioning unit water valve energy-saving control system provided in one embodiment of this application.

[0030] In the attached diagram, T o This is the outdoor temperature, in °C.

[0031] H o Outdoor relative humidity, in %;

[0032] P o This is the outdoor saturated partial pressure of water vapor, in Pa.

[0033] d o Outdoor humidity content, expressed in g / kg, represents the mass of water vapor carried by 1 kg of dry air;

[0034] T r This refers to the return air temperature, expressed in °C.

[0035] H r The relative humidity of the return air is expressed in %.

[0036] P r This is the saturated partial pressure of water vapor in the return air, in Pa.

[0037] d r Moisture content of return air, expressed in g / kg, representing the mass of water vapor carried by 1 kg of dry air;

[0038] T r-设定 Set the temperature for the return air, in °C;

[0039] H r-设定 Set the relative humidity for the return air, in %;

[0040] P r-设定 Set the saturated partial pressure of water vapor for the return air, in Pa;

[0041] d r-设定 The moisture content of the return air is set in g / kg, which represents the mass of water vapor carried by 1 kg of dry air.

[0042] V1 is the surface cooling valve;

[0043] V2 is a heating valve;

[0044] V3 is the humidification valve;

[0045] THS-1 is a combined indoor temperature and humidity sensor;

[0046] QP-1 is a differential pressure transmitter;

[0047] DSP-1 is a differential pressure switch;

[0048] VA-1 is an electric regulating valve;

[0049] VA-2 is an electric heating valve;

[0050] VA-3 is an electric humidification valve;

[0051] DA-1 is the actuator for the first air valve;

[0052] DA-2 is the second air valve actuator. Detailed Implementation

[0053] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0054] Reference Figures 1 to 4 This application provides an energy-saving control system for a single-pass return air constant temperature and humidity air conditioning unit water valve, comprising: a controller 101, electrically connected to a data input module 102, a parameter setting module 103, a parameter calculation module 104, and a parameter output module 105 respectively; the data input module 102 includes a temperature and humidity sensor installed in the clean area; the temperature and humidity sensor is electrically connected to the controller 101; the parameter output module 105 includes a cooling valve, a heating valve, and a humidifying valve installed in the fresh air duct, and the controller 101 is electrically connected to the cooling valve, the heating valve, and the humidifying valve respectively; the fresh air duct is connected to the return air duct and the supply air duct respectively. The air duct connects to the return air inlet and supply air inlet of the purification zone, and the exhaust air outlet of the purification zone is connected to the exhaust air duct. This forms a flow path from the fresh air inlet to the supply air duct, through the supply air outlet to the purification zone, then from the return air inlet through the return air duct to the fresh air duct, and from the exhaust air outlet through the exhaust air duct to the outside of the purification zone. This system allows external airflow to pass through the fresh air duct, undergo a series of treatments, and then the purification zone controls the recirculation of some airflow back into the fresh air duct, while the remaining airflow is exhausted to the outside through the exhaust air duct. This achieves air purification and ventilation while simultaneously regulating the air environment of the purification zone. The preferred temperature and humidity sensor is the combined indoor temperature and humidity sensor THS-1.

[0055] The controller 101 is electrically connected to each module to collect data, process data, and output control commands. Temperature and humidity sensors collect real-time temperature and humidity data from the cleanroom. Based on this data, the controller precisely adjusts the cooling valve, heating valve, and humidification valve of the fresh air duct, thereby achieving precise control of the temperature and humidity in the cleanroom. This solves the problems of heat and cold compensation and high energy loss associated with traditional constant temperature and humidity air conditioning, achieving energy-saving operation. For example, in a laboratory setting, experiments have stringent requirements for environmental temperature and humidity. When the temperature and humidity sensors detect an increase in temperature and a decrease in humidity, the controller can quickly adjust the cooling valve, heating valve, and humidification valve to precisely adjust the supply air temperature and humidity, avoiding energy waste caused by heat and cold compensation in traditional methods.

[0056] Furthermore, such as Figure 2As shown, the humidifying valve V3 is connected to a humidifier, which includes an electrode humidifier, a steam humidifier, and a spray humidifier. The humidifying valve V3 can connect to various types of humidifiers, such as electrode humidifiers, steam humidifiers, and spray humidifiers, allowing for the selection of appropriate humidification methods based on different usage scenarios and needs. This improves the system's applicability and flexibility, further ensuring the accuracy and stability of humidity control. For example, in an electronics manufacturing workshop where high humidity requirements are necessary and damage to electronic components from water droplets must be avoided, a steam humidifier can be used. In a museum, however, spray humidification may be more suitable for exhibition areas with relatively relaxed humidity requirements. Choosing the appropriate method as needed better meets the needs of different environments.

[0057] In some embodiments of this application, such as Figure 3 As shown, the fresh air duct includes, in sequence, a primary fresh air filter section, a secondary fresh air filter section, a primary fresh-return air section, a fan section, a flow equalization section, and a secondary supply air section. The primary fresh-return air section is connected to the return air inlet of the purification zone via the return air duct, and the secondary supply air section is connected to the supply air inlet of the purification zone via the supply air duct. An electric regulating valve VA-1 and a surface cooler are provided between the primary fresh-return air section and the fan section. The surface cooler is connected to a surface cooler valve V1, which is preferably an electric regulating valve VA-1. A heating valve V2 and a humidifying valve V3 are provided between the fan section and the flow equalization section. The heating valve V2 is connected to a heater, and the humidifying valve V2 is connected to a humidifier. The air inlet of the fresh air duct is connected to the primary fresh air filter section.

[0058] Clearly defining the functional sections of the fresh air ductwork and rationally arranging them makes the air handling process more scientific. The connection between the primary fresh air return section and the return air duct, and between the secondary air supply section and the supply air duct, ensures smooth air circulation. The rational placement of electric regulating valves, surface coolers, heating valves, and humidifying valves facilitates precise temperature and humidity control, improving air handling efficiency and effectiveness while reducing energy consumption. For example, in data centers, the operation of numerous devices generates heat. After the fresh air is processed through each functional section, the supply air temperature can be quickly and effectively reduced by rationally adjusting electric regulating valves and surface coolers, maintaining a constant temperature and humidity environment in the data center and reducing unnecessary energy consumption.

[0059] Furthermore, the heating valve V2 and humidifying valve V3 are respectively electric heating valve VA-2 and electric humidifying valve VA-3. The electric heating valve VA-2 and electric humidifying valve VA-3 facilitate automated and precise control, allowing for rapid and accurate adjustment of heating and humidification levels according to controller commands. This is more efficient and accurate than manual adjustment, improving the system's control precision for temperature and humidity, thereby achieving energy savings. For example, in a pharmaceutical production workshop, the production process is sensitive to changes in temperature and humidity. When slight fluctuations occur in temperature and humidity, the electric heating valve VA-2 and electric humidifying valve VA-3 can quickly respond to controller commands and precisely adjust the heating and humidification levels, avoiding energy waste caused by untimely or inaccurate adjustments.

[0060] DSP-1 differential pressure switches are installed in the aforementioned primary filter section, fresh air medium-efficiency filter section, primary fresh air return section, fan section, and medium-efficiency supply air section. For example... Figure 3 As shown, by setting the filter differential pressure switch DSP-1 in each functional segment, the filter clogging status can be monitored in real time, promptly reminding maintenance personnel to clean or replace it. This ensures smooth airflow, avoids affecting air treatment efficiency and system operation efficiency due to filter clogging, and reduces additional energy consumption caused by poor ventilation. For example, in the application scenario of constant temperature and humidity air conditioning system in hospital operating rooms, if filter clogging is not addressed in time, it will affect air cleanliness and ventilation effect, causing the system to consume more energy to maintain environmental parameters. The filter differential pressure switch DSP-1 can provide timely warnings, ensuring efficient system operation.

[0061] Furthermore, a differential pressure transmitter QP-1 electrically connected to the controller 101 is also installed within the cleanroom. The QP-1 differential pressure transmitter, electrically connected to the controller 101, allows for real-time monitoring of the pressure difference between the cleanroom and the outside environment or other areas. This ensures the cleanroom maintains a suitable pressure environment, preventing the entry of external pollutants and helping to optimize the system's air circulation and energy consumption control. For example, in biological laboratory applications, a negative pressure environment needs to be maintained to prevent the leakage of harmful gases. The differential pressure transmitter monitors the pressure difference in real time, and the controller 101 adjusts the air supply and exhaust system based on the data to ensure pressure stability and avoid increased air handling energy consumption due to pressure imbalance.

[0062] Both the supply air duct and the exhaust air duct are equipped with fire dampers and damper actuators, such as Figure 3As shown, a first damper actuator DA-1 is installed in the supply air duct, and a second damper actuator DA-2 is installed in the return air duct. The installation of fire dampers and damper actuators in the supply and exhaust air ducts improves system safety. In emergencies such as fires, the fire dampers can automatically close to prevent the spread of fire; the damper actuators facilitate remote control of the damper opening, optimizing airflow regulation and achieving energy-saving operation. For example, in a large data center in a commercial complex, in the event of a fire, the fire dampers quickly close to prevent the fire from spreading through the ducts, while the damper actuators can flexibly adjust the dampers according to actual needs, rationally controlling the supply and exhaust airflow and reducing energy consumption.

[0063] It should be noted that the first damper actuator DA-1 and the second damper actuator DA-2 mentioned above can be the same type of damper actuator. A damper actuator is an automated drive device whose main task is to precisely drive (open, close, or adjust) the damper blades (or valve plates) in ventilation ducts according to instructions from the control system. By changing the opening degree of the damper, it controls the airflow, direction, or pressure to meet the needs of specific areas within a building for ventilation, air conditioning, temperature and humidity control, pressure balance, or smoke control and exhaust.

[0064] In some embodiments of this application, the exhaust duct is equipped with an exhaust fan and a check valve, and a rainproof louver is provided at the end of the exhaust duct. The exhaust fan and check valve ensure smooth exhaust and prevent backflow, while the rainproof louvers at the end prevent rainwater from entering, protecting the normal operation of the system equipment and reducing additional energy consumption and maintenance costs due to equipment failure. For example, in the exhaust duct of an outdoor constant temperature and humidity air conditioning system, the exhaust fan ensures timely discharge of exhaust gas, the check valve prevents external air backflow from affecting system operation, and the rainproof louvers prevent rainwater from damaging the equipment and also prevent external rainwater from entering the purification area from the exhaust duct, ensuring stable system operation and reducing energy consumption.

[0065] Furthermore, the air inlet of the fresh air duct is equipped with a regulating valve and a filter. The regulating valve adjusts the fresh air volume to adapt to different operating conditions, while the filter effectively removes impurities from the fresh air, ensuring the cleanliness of the air entering the system, reducing the burden on subsequent air handling equipment, and lowering energy consumption. For example, during seasonal changes, the regulating valve adjusts the fresh air volume, reducing the amount of fresh air introduced in winter and lowering heating energy consumption; the filter removes dust and other impurities from the fresh air, allowing equipment such as surface coolers and heaters to operate more efficiently and reducing energy loss.

[0066] Furthermore, all of the aforementioned return air ducts, supply air ducts, and exhaust air ducts are equipped with filters. This further improves air cleanliness, ensures air quality in the clean area, and reduces frequent equipment operation and increased energy consumption caused by air quality issues. For example, in the constant temperature and humidity air conditioning systems of museums, where air quality requirements are extremely high, the filters in each duct can effectively filter pollutants in the air, protecting cultural relics from contamination, while also reducing frequent system adjustments and increased energy consumption due to unclean air.

[0067] In some embodiments of this application, the controller 101 is electrically connected to the data input module 102, the parameter setting module 103, the parameter calculation module 104, and the parameter output module 105, respectively. The data input module 102 includes sensors for acquiring environmental parameters, namely, temperature and humidity sensors, such as the aforementioned combined indoor temperature and humidity sensor THS-1, which includes an outdoor temperature and humidity sensor, a return air temperature and humidity sensor, and a supply air temperature and humidity sensor. The parameter setting module 103 can be used to set specific parameters for the return air set temperature and return air set relative humidity. The parameter calculation module 104 is used to calculate the target humidity, outdoor humidity, outdoor temperature, and return air set temperature. Based on the calculated values, the controller 101 controls corresponding valves such as the opening degree of the cooling valve, the heating valve, and the humidification valve, thereby controlling the stable operation of the system.

[0068] The specific parameters and calculation instructions are as follows:

[0069] Reference Figure 4 As shown, the control strategy is determined based on the outdoor temperature (high temperature and high humidity, high temperature and low humidity, low temperature and high humidity, low temperature and low humidity): the PID information of the cold water valve is used to determine the priority order of the system to regulate the hot water valve and the cold water valve, so as to minimize the cold and heat offset conditions.

[0070] Based on the indoor target temperature value T r-设定 relative humidity H of the target r-设定 Calculate the target indoor moisture content d r-设定 The specific calculation formula is as follows:

[0071] P r- Setting = (2.718282) 16.77521- [ 4097.387 / ( Tr- Set +237.2651)])*1000;

[0072] d r-设定 =(6.22*P) r-设定 *H r-设定 ) / (100000-0.01*P r-设定 *H r-设定 )

[0073] Based on the outdoor temperature value T o relative humidity H outdoors o Calculate outdoor moisture content d o The specific calculation formula is as follows:

[0074] P o =(2.718282) 16.77521- [ 4097.387 / ( To+237.2651 )])*1000;

[0075] d o =(6.22*P) o *H o ) / (100000-0.01*P o *H o )

[0076] When T o >T r-设定 , and d o >d r-设定 When the outdoor air is hot and humid, the chilled water valve aims to cool and dehumidify, while simultaneously adjusting the return air set temperature T. r-设定 With return air set humidity d r-设定 The chilled water valve is PID-regulated; the valve opening is adjusted according to the PID output with the larger opening. When the return air set temperature T is used... r-设定 When the cold water valve is opened to a large degree, the heating valve is closed, and the humidification valve is set to the humidity level d according to the return air. r-设定 Adjustments are made; when the humidity level dr is set according to the return air... 设定 When the cold water valve opening is increased, the humidifier valve closes, and the heating valve operates according to the return air set temperature Tr- 设定 Adjustments were made;

[0077] When T o >T r-设定 , and d o < dr-设定 When the outdoor air is hot and low in humidity, the chilled water valve aims to lower the temperature, and at this time, it only needs to consider the return air set temperature T. r-设定 The chilled water valve is PID-regulated, the heating valve is closed, and the humidification valve is set to the humidity level dr based on the return air. 设定 Adjustments were made;

[0078] When T o < Tr-设定 , and d o >d r-设定 When the outdoor air is cold and humid, the chilled water valve aims to dehumidify, and the humidity level d is set according to the return air. r-设定The PID control valve for the chilled water is activated, the humidifier valve is closed, and the heating valve operates according to the return air set temperature Tr-. 设定 Adjustments were made;

[0079] When T o <T r-设定 , and d o <d r-设定 When the outdoor air is cold and humid, the chilled water valve aims to lower the temperature, and at this time, it operates according to the return air set temperature T. r-设定 The chilled water valve and heating valve are PID-regulated according to the return air set temperature T. r-设定 Adjustments are made, and the humidifier valve is set to the humidity level d based on the return air. r-设定 Adjustments were made;

[0080] Among them, based on the return air set temperature T r-设定 Perform PID control of the chilled water valve logic: return air temperature T r >Return air set temperature T r-设定 At that time, the opening degree of the cold water valve increases; the return air temperature T r <Return air set temperature T r-设定 At that time, the opening degree of the cold water valve decreases;

[0081] The moisture content d is set according to the return air. r-设定 PID control logic for chilled water valve: return air moisture content d r >Return air set humidity d r-设定 At that time, the opening degree of the cold water valve increases; the moisture content of the return air d r <Return air set humidity d r-设定 At that time, the opening degree of the cold water valve decreases;

[0082] Among them, based on the return air set temperature T r-设定 Logic for adjusting the heating valve: Return air temperature T r >Return air set temperature T r-设定 At that time, the heating valve opening decreases; the return air temperature T r <Return air set temperature T r-设定 At this time, the opening of the heating valve increases;

[0083] The moisture content d is set according to the return air. r-设定 Logic for adjusting the humidifier valve: Return air moisture content d r >Return air set humidity d r-设定 At that time, the humidifier valve opening decreases; the return air moisture content d r <Return air set humidity d r-设定 At this time, the humidification valve opening increases;

[0084] In addition, in this embodiment, the indoor temperature target is automatically fine-tuned according to different seasons / months. For example, the indoor target temperature is automatically adjusted to 23-24℃ during the cooling season (May-September) and to 22-23℃ during the heating season (November-March).

[0085] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0086] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0087] The above provides a detailed description of the energy-saving control system for a single-pass return air constant temperature and humidity air conditioning unit water valve provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An energy-saving control system for water valves in a single-pass return air constant temperature and humidity air conditioning unit, characterized in that, include: The controller is electrically connected to the data input module, parameter setting module, parameter calculation module, and parameter output module, respectively. The data input module includes a temperature and humidity sensor located in the clean area; the temperature and humidity sensor is electrically connected to the controller. The parameter output module includes a cooling valve, a heating valve, and a humidifying valve installed in the fresh air duct, and the controller is electrically connected to the cooling valve, the heating valve, and the humidifying valve respectively. The fresh air duct is connected to the return air inlet and the supply air outlet of the purification area through the return air duct and the supply air duct, respectively, and the exhaust air outlet of the purification area is connected to the exhaust air duct. The airflow path of this system is from the air inlet of the fresh air duct to the air supply duct, through the air supply duct to the purification area, and then from the return air inlet through the return air duct to the fresh air duct, and from the exhaust air inlet through the exhaust air duct to the outside of the purification area.

2. The system according to claim 1, characterized in that, The humidifying valve is connected to a humidifier, which includes an electrode humidifier and a steam humidifier.

3. The system according to claim 1 or 2, characterized in that, The fresh air duct includes a fresh air primary filter section, a fresh air medium filter section, a primary fresh air return section, a fan section, a flow equalization section, and a medium-efficiency air supply section arranged in sequence. The primary fresh air return section is connected to the return air inlet of the purification zone through the return air duct, and the medium-efficiency air supply section is connected to the air supply outlet of the purification zone through the air supply duct. An electric regulating valve and a surface cooler are provided between the primary fresh air return section and the fan section; A heating valve and a humidifying valve are sequentially installed between the fan section and the flow equalization section. The heating valve is connected to a heater, and the humidifying valve is connected to a humidifier. The air inlet of the fresh air duct is connected to the primary fresh air filter section.

4. The system according to claim 3, characterized in that, The heating valve and the humidifying valve are respectively an electric heating valve and an electric humidifying valve.

5. The system according to claim 3, characterized in that, The primary filter section, the fresh air exchange filter section, the primary fresh air return section, the fan section, and the medium-efficiency air supply section are all equipped with filter differential pressure switches.

6. The system according to claim 1, characterized in that, The purification zone is also equipped with a differential pressure transmitter that is electrically connected to the controller.

7. The system according to claim 2, characterized in that, Both the supply air duct and the exhaust air duct are equipped with fire dampers and damper actuators.

8. The system according to claim 1, characterized in that, The exhaust duct is equipped with an exhaust fan and a check valve, and a rainproof louver is provided at the end of the exhaust duct.

9. The system according to claim 3, characterized in that, The air inlet of the fresh air duct is also equipped with a regulating valve and a filter.

10. The system according to claim 1, characterized in that, The return air duct, supply air duct, and exhaust air duct are all equipped with filters.

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