Water supply control system and control method of chiller

Abstract

The embodiment of the present invention relates to a water supply control system of a chilled water host and a control method thereof. The water supply control system of the chilled water host includes a water outlet pipeline, a water return pipeline, a thermometer at the water outlet end of the host, a thermometer at the water return end of the host, a plurality of water injection thermometers at the equipment end, and a water outlet thermometer at the equipment end, and a control device. The chilled water output by the chilled water host is transmitted to the destination device via the water outlet pipeline for heat exchange, and the heat exchanged water is then returned from the destination device to the chilled water host via the water return pipeline for cooling for recycling. The thermometer at the water outlet end of the host measures the water temperature of the chilled water output from the chilled water host, the thermometer at the water return end measures the temperature of the water flowing back to the chilled water host, and a plurality of water injection thermometers at the equipment end and a water outlet thermometer at the equipment end measure the temperature of the water injected into and out of the destination device. The control device adjusts the water injection flow rate injected into the devices based on the information.

Description

Technical Field

[0001] The disclosed embodiment relates to a water supply control system of a chiller and a control method thereof. Background Art

[0002] In the semiconductor process, the machines in the factory, such as the photolithography machines, diffusion machines, etching machines, thin film machines and other machines in the wafer factory, may generate a large amount of heat energy when they are in operation, which will accumulate in the factory, causing the indoor temperature of the factory to rise, which not only affects the product qualification rate, but also makes the indoor staff uncomfortable. Therefore, the heat energy accumulated in the factory must be dissipated to maintain the normal operation of the machines and personnel, and the heat is usually dissipated by outputting ice water to the cold rooms in each factory through the water supply control system of the ice water host at the factory end to cool the cold rooms in each factory area, so as to exchange heat with the heat generated at the factory end to dissipate heat. Although the water supply control system of the ice water host can help the factory to dissipate heat, its cooling power consumption is huge, accounting for a large part of the total power consumption of the wafer factory. In addition to causing an increase in electricity bills and an increase in factory operating costs, it also indirectly causes environmental damage.

[0003] Therefore, how to balance meeting the demand for chilled water for heat dissipation in each factory area while saving energy and water is crucial to factory management and environmental sustainability. Summary of the invention

[0004] The present disclosure provides a control method for a water supply control system of a chilled water host, which comprises the following steps: using a pump to inject chilled water outputted from the chilled water host into a plurality of destination devices for heat exchange; collecting the host outlet water temperature, host return water temperature, device-end injection water temperatures and device-end outlet water temperatures of the chilled water outputted from the chilled water host; based on the temperature difference between the host outlet water temperature and the host return water temperature, and the temperature difference between the device-end injection water temperature and the device-end outlet water temperature of each of the destination devices, adjusting the injection flow rate injected into the destination device, and repeating the above steps to optimize the performance of the water supply control system of the chilled water host.

[0005] The present disclosure provides a control method for a water supply control system of a chilled water host, which comprises the following steps: using a pump to inject chilled water output from the chilled water host into a plurality of destination devices for heat exchange; collecting the host outlet water temperature, host return water temperature of the chilled water output from the chilled water host, and the device-end injection water temperature and device-end outlet water temperature of a plurality of chilled waters arriving at the destination device end; and inputting the temperature difference between the host outlet water temperature and the host return water temperature, and the temperature difference between the device-end injection water temperature and the device-end outlet water temperature of each of the destination devices into a neural network architecture, and the neural network architecture determines to adjust the injection flow rate injected into the destination device.

[0006] The present disclosure provides a control system for a chilled water host, which includes: a chilled water host, a water outlet pipeline, a water return pipeline, a host water outlet end thermometer, a host water return end thermometer, a plurality of equipment end water injection thermometers, a plurality of equipment end water outlet thermometers and a control device. The water outlet pipeline includes a water outlet main line connected to the chilled water host, and the water outlet main line is connected to a plurality of water injection branch lines, which are respectively connected to a plurality of destination devices to inject the chilled water output from the chilled water host into the destination devices for heat exchange. The water return pipeline includes a water return main line connected to the chilled water host, and the water return main line is connected to a plurality of water return branch lines, which are respectively connected to the destination devices to return the water after heat exchange flowing out of the destination devices to the chilled water host. The host water outlet end thermometer is arranged on the water outlet main line near the chilled water host to measure the host water outlet temperature, and the host water return end thermometer is arranged on the water return main line near the chilled water host to measure the host water return temperature. The device-side water injection thermometers are respectively arranged on the water injection branch lines near the destination device end to measure the device-side water injection temperature, and the device-side water outlet thermometers are respectively arranged on the water return branch lines near the destination device end to measure the device-side water outlet temperature. The control device controls the water injection flow rate of the ice water host to be injected into the destination device based on the water outlet temperature and the water injection temperature information.

[0007] In order to make the above features and advantages of the present disclosure more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 FIG. 1 is a schematic diagram of a factory cooling system according to an embodiment of the present disclosure.

[0009] Figure 2 FIG. 4 is a schematic diagram of a water supply control system of a chiller according to an embodiment of the present disclosure.

[0010] Figure 3 FIG. 4 is another schematic diagram of a water supply control system of a chiller according to an embodiment of the present disclosure.

[0011] Figure 4 FIG. 4 is another schematic diagram of a water supply control system of a chiller according to an embodiment of the present disclosure.

[0012] Figure 5 FIG. 4 is another schematic diagram of a water supply control system of a chiller according to an embodiment of the present disclosure.

[0013] Figure 6 FIG. 4 is another schematic diagram of a water supply control system of a chiller according to an embodiment of the present disclosure.

[0014] Figure 7FIG. 4 is another schematic diagram of a water supply control system of a chiller according to an embodiment of the present disclosure.

[0015] Figure 8 It is a flow chart of establishing and using the neural network architecture of the disclosed embodiment.

[0016] Fig. 9 Some embodiments of the present disclosure provide for use of Figure 7 A flow chart of a method for controlling a water supply control system of a chilled water host. DETAILED DESCRIPTION

[0017] The following disclosure provides many different embodiments or examples for implementing the different features of the provided subject matter. The following describes specific examples of components, materials, values, steps, operations, structures, etc. to simplify the embodiments of the present invention. Of course, these are only examples and are not intended to be limiting. It is expected that there are other components, values, operations, materials, structures, etc. For example, the following description may include an embodiment in which the first feature and the second feature are formed to be directly in contact with each other by forming a first feature "on" or a second feature "on". It may also include an embodiment in which an additional feature may be formed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. In addition, the embodiments of the present invention may reuse reference numbers and / or letters in various examples. This repetition is for the purpose of brevity and clarity, but does not itself represent the relationship between the various embodiments and / or arrangements discussed.

[0018] Additionally, for ease of description, spatially relative terms such as "beneath," "below," "lower," "above," "over," "upper," "on," and the like may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the drawings. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0019] The disclosed embodiment provides a water supply control system of a chiller and a control method thereof, so as to more accurately meet the individual heat dissipation requirements of various target devices, thereby optimizing energy saving benefits.

[0020] See also Figure 1 . Figure 1 Schematic diagram of the factory cooling system of the present disclosure embodiment. Figure 1As shown, the factory cooling system 100 may include a chiller 101, a chiller pump 102, a destination device 103, a cooling tower 104, and a cooling pump 105. The chiller 101 may include a condenser and an evaporator. The chilled water output by the chiller 101 is pressurized and transported to the destination device 103, such as a cold room in a factory area, through the chiller pump 102 for heat exchange, and the water after heat exchange flows back to the chiller 101, and the evaporator in the chiller 101 cools the water after heat exchange, thereby providing chilled water for the chiller output to circulate. In addition, the cooling water tower 104 supplies low-temperature cooling water, which is transported to the chilled water host 101 via the cooling pump 105. The low-temperature cooling water absorbs the heat emitted by the condenser in the chilled water host 101 to cool the chilled water host 101. After absorbing the heat emitted by the condenser, the low-temperature cooling water becomes high-temperature cooling water, which then returns to the cooling water tower 104 and is cooled by the heat sink in the cooling water tower 104. In the process of heat exchange, evaporation is used to dissipate heat, and the heat is quickly taken away by the fan. The cooled low-temperature cooling water is then sent back to the chilled water host 101 for recycling. In some embodiments, the water supply control system and control method of the chilled water host explored in the present disclosure are about Figure 1 The dotted box 106 includes the water supply and return operation of the chiller 101, the chiller pump 102, and the destination device 103 to save energy.

[0021] See also Figure 2 . Figure 2 is a schematic diagram of a water supply control system and a control method of a chiller provided in some embodiments of the present disclosure, such as Figure 2 As shown, the water supply control system 200 of the chiller includes a chiller 201, a pump 202, a control device 203, and a chiller outlet water pressure gauge P O , Main engine return water pressure gauge P IN , Equipment end water injection pressure gauge P IN1 , P IN2 and P IN3 And the water pressure gauge P at the equipment end O1 , P O2 and P O3 , water outlet pipeline L1 and water return pipeline L2. The water outlet pipeline L1 includes the water outlet main pipeline L10 and the water injection branch pipelines L11, L12 and L13. The water return pipeline L2 includes the water return main pipeline L20 and the water return branch pipelines L21, L22 and L23. Water outlet pressure gauge P O Set on the water outlet main line L10 near the end of the chilled water main unit 201; the main unit return water pressure gauge P IN Set on the return water main line L20 near the end of the chilled water main unit 201; the equipment end water injection pressure gauge P IN1 , P IN2 and P IN3They are respectively installed on the water injection branch lines L11, L12 and L13 near the end of the target equipment MAU1, MAU2 and MAU3. The water outlet pressure gauge P O1 , P O2 and P O3 They are respectively installed on the return branch lines L21, L22 and L23 near the destination equipment MAU1, MAU2 and MAU3.

[0022] The ice water flowing out from the ice water main unit 201 is transported to each destination device MAU1, MAU2 and MAU3 through the water outlet pipeline L1. The transportation path is to distribute the ice water from the water outlet main line L10 connected to the ice water main unit 201 in the water outlet pipeline L1 to the connected water injection branch lines L11, L12 and L13. One end of the water injection branch lines L11, L12 and L13 is respectively connected to each destination device MAU1, MAU2 and MAU3, so as to inject the ice water into the destination devices MAU1, MAU2 and MAU3 for heat exchange. The water after heat exchange is then returned to the chilled water host 201 via the return water pipeline L2 connecting the destination devices MAU1, MAU2 and MAU3 and the chilled water host 201. The return path is to collect the heat-exchanged water into the return water main line L20 through the return water branch lines L21, L22 and L23 in the return water pipeline L2 which are respectively connected to the destination devices MAU1, MAU2 and MAU3. The other end of the return water main line L20 is connected to the chilled water host 201 to return the collected heat-exchanged water to the chilled water host 201.

[0023] exist Figure 2 In the water supply control system 200 of the chiller 201, the control device 203 collects the chilled water flowing out of the chiller 201 and pressurizes it through the pump 202 to deliver it to multiple destination devices MAU1, MAU2 and MAU3. O The measured main engine water outlet pressure and main engine return water pressure gauge P IN The measured pressure difference information of the host return water pressure, and the device end water injection pressure gauge P of the device farthest from the chiller host 201 (MAU1) among the multiple destination devices MAU1, MAU2 and MAU3 connected to the water supply control system 200 IN1 The measured water injection pressure at the equipment end and the water outlet pressure gauge P O1The measured pressure difference information of the water outlet pressure at the device end is used to adjust the water outlet flow rate of the ice water host 201, and after a certain interval, the pressure difference information of the water outlet pressure and the return water pressure of the host and the pressure difference information of the injection pressure and the water outlet pressure of the destination device MAU1 and the steps of adjusting the water outlet flow rate are repeated to meet the ice water flow rate demand of the destination device for heat exchange. The basis for judging the water outlet flow rate of the embodiment is established based on the water outlet and return water pressure difference at the ice water host end and the injection and water outlet pressure difference information at the destination device end. When the water outlet flow rate of the ice water host 201 can meet the demand of the farthest destination device MAU1, the water outlet flow rate can also meet the demand of other destination devices MAU2 and MAU3 that are closer to the ice water host 201.

[0024] The elements disclosed in the drawings mentioned in the following description are Figure 2 The same components disclosed in the drawings will be marked with the same component numbers.

[0025] See also Figure 3 . Figure 3 Schematic diagram of a water supply control system and control method of a chiller provided in some embodiments of the present disclosure. Figure 3 As shown, the water supply control system 300 of the chiller includes a chiller 201, a pump 202, a water outlet pipeline L1 and a water return pipeline L2. The water outlet pipeline L1 includes a water outlet main pipeline L10 and water injection branch pipelines L11, L12 and L13. The water return pipeline L2 includes a water return main pipeline L20 and water return branch pipelines L21, L22 and L23. The ice water flowing out from the ice water main unit 201 is transported to each destination device MAU1, MAU2 and MAU3 through the water outlet pipeline L1. The transportation path is to distribute the ice water from the water outlet main line L10 connected to the ice water main unit 201 in the water outlet pipeline L1 to the connected water injection branch lines L11, L12 and L13. One end of the water injection branch lines L11, L12 and L13 is respectively connected to each destination device MAU1, MAU2 and MAU3 to inject the ice water into the destination devices MAU1, MAU2 and MAU3 for heat exchange. The water after heat exchange is then returned to the chiller 201 via the return water pipeline L2 connecting the destination devices MAU1, MAU2 and MAU3 and the chiller 201. The return path is to collect the heat exchanged water to the return water main line L20 through the return water branch lines L21, L22 and L23 in the return water pipeline L2 connected to the destination devices MAU1, MAU2 and MAU3 respectively. The other end of the return water main line L20 is connected to the chiller 201 to return the collected heat exchanged water to the chiller 201. The water supply control system 300 of the chiller may further include a thermometer T at the water outlet of the host. O , Main engine return water end thermometer T IN , Equipment end water injection thermometer T IN1 , TIN2 and T IN3 , and the water outlet temperature meter T O1 , T O2 , T O3 , and control device 203. Main unit water outlet temperature meter T O It is set on the water outlet main line L10 connected to the chiller 201 to measure the outlet water temperature of the chilled water output from the chiller 201. The return water end thermometer T IN It is set on the return water main line L20 connected to the chiller 201 to measure the return water temperature of the host, so as to calculate the temperature difference between the host outlet water temperature and the host return water temperature. IN1 , T IN2 and T IN3 They are respectively arranged on the water injection branch lines L11, L12 and L13 connected to the destination equipment MAU1, MAU2 and MAU3 to measure the equipment-end water injection temperature injected into the destination equipment MAU1, MAU2 and MAU3, and multiple equipment-end water outlet thermometers are respectively arranged on the return water branch lines L21, L22 and L23 connected to the destination equipment MAU1, MAU2 and MAU3 to measure the equipment-end water outlet temperature, so as to calculate the temperature difference between the equipment-end water injection temperature and the equipment-end water outlet temperature. The number of target devices MAU1, MAU2 and MAU3 mentioned here is for demonstration purposes only and is not used to limit the number of target devices. The target devices MAU1, MAU2 and MAU3 can be external air conditioning boxes connected to factories located in different locations. Due to the differences in the environment of different factories and / or the machines or devices installed in each factory, for example, the semiconductor factory is equipped with yellow light machines, etching machines, measuring machines, etc., and the heat dissipation conditions of different machines are different, resulting in different ice water requirements for each target equipment.

[0026] The control device 203 may generally include a computer host, a receiving unit for receiving signals, an output unit for outputting control signals, a display unit for displaying information, and any other units or combinations thereof that may exist in the control device. In this embodiment, the control device 203 and the chiller host 201, the pump 202, and the host water outlet temperature meter T O , Main engine return water end thermometer T IN , Equipment end water injection thermometer T IN1 , T IN2 and T IN3 , and the water outlet temperature meter T O1 , T O2 , T O3 Coupling to receive the operation information of the chiller host 201 and the pump 202, as well as the host water outlet temperature meter T O , Main engine return water end thermometer T IN, Equipment end water injection thermometer T IN1 , T IN2 and T IN3 , and the water outlet temperature meter T O1 , T O2 , T O3 The temperature measurement information is used to calculate the temperature difference between the main unit water outlet temperature and the main unit return water temperature and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature. The control device 203 outputs a control signal to adjust the water injection flow rate injected into each destination device MAU1, MAU2 and MAU3 respectively through the temperature difference between the main unit water outlet temperature and the main unit return water temperature and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature obtained by calculation, and after a certain time interval, repeats the steps of receiving the temperature difference between the main unit water outlet temperature and the main unit return water temperature and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature to adjust the water injection flow rate injected into each destination device MAU1, MAU2 and MAU3 respectively, and optimizes the performance of the ice water system 300 under the load requirement of the destination devices MAU1, MAU2 and MAU3 for heat exchange. Compared with the pressure difference between the device-side water injection pressure and the device-side water outlet pressure of the farthest destination device, and the pressure difference between the host-side water outlet pressure and the return water pressure of the ice water host end, the temperature difference between the host outlet water temperature and the host return water temperature, and the temperature difference between the device-side water injection temperature and the device-side water outlet temperature adopted in this embodiment can more clearly reflect the actual ice water flow demand required by each destination device, so that the control device can more accurately adjust the ice water flow injected into each destination device, and optimize the energy-saving benefits while meeting the individual heat dissipation requirements of each destination device. The "adjustment" mentioned above refers to reducing the outlet water pressure of the pump through the temperature difference information of the ice water host end and each destination device end, while meeting the heat exchange conditions of the destination device, so that the ice water flow output from the ice water host becomes smaller, the temperature difference between the device-side water injection temperature and the device-side water outlet temperature of each destination device becomes larger, and the pump outlet pressure is reduced, which can reduce the load of the pump and reduce the power consumption of the overall ice water system, thereby achieving energy-saving requirements.

[0027] See also Figure 4 . Figure 4 Schematic diagram of a water supply control system and control method of a chiller provided in some embodiments of the present disclosure. Figure 4As shown, the water supply control system 400 of the ice water host may further include a host water outlet flowmeter F and multiple destination equipment water injection flowmeters F1, F2 and F3. The host water outlet flowmeter F is arranged on the water outlet main line L10 connected to the ice water host 201 to measure the host water outlet flow rate of the ice water flowing out of the ice water host 201, and the destination equipment water injection flowmeters F1, F2 and F3 are respectively arranged on the water injection branch lines L11, L12 and L13 connected to the destination equipment MAU1, MAU2 and MAU3 to measure the actual water injection flow rate of the ice water injected into the destination equipment MAU1, MAU2 and MAU3. The host water outlet flowmeter F and the destination equipment water injection flowmeters F1, F2 and F3 are coupled to the control device 203 to feed back the measured actual host water outlet flow rate and destination equipment water injection flow rate information to the control device 203. Based on the previously obtained temperature difference between the host water outlet temperature and the host return water temperature, and the temperature difference parameters between the device-end water injection temperature and the device-end water outlet temperature of each destination device MAU1, MAU2 and MAU3, the control device 203 further considers the host water outlet flow rate and the water injection flow rate parameters measured at the destination devices MAU1, MAU2 and MAU3 to optimize the control method and output a control signal to adjust the individual water injection flow rates injected into the destination devices MAU1, MAU2 and MAU3, so as to more accurately meet the individual heat dissipation requirements of each destination device and further optimize the energy-saving benefits.

[0028] See also Figure 5 . Figure 5 Schematic diagram of a water supply control system and control method of a chiller provided in some embodiments of the present disclosure. Figure 5 As shown, the water supply control system 500 of the chiller can further include a plurality of ambient temperature and humidity meters TT1, TT2, and TT3, which are respectively arranged on the destination devices MAU1, MAU2, and MAU3 to measure the ambient temperature and humidity of the destination devices MAU1, MAU2, and MAU3. The ambient temperature and humidity meters TT1, TT2, and TT3 are coupled to the control device 203 to feed back the measured ambient temperature and humidity information of the destination devices MAU1, MAU2, and MAU3 to the control device 203. The control device 203 further considers the ambient temperature and humidity parameters based on the originally obtained parameters to optimize the control method and output a control signal to adjust the individual water injection flow rates injected into the destination devices MAU1, MAU2, and MAU3, so as to more accurately meet the individual heat dissipation requirements of each destination device and further optimize the energy saving benefits.

[0029] In some embodiments of the present disclosure, any water supply control system of a chiller may include: Figure 2 The main engine water outlet pressure gauge P O , Main engine return water pressure gauge P IN, Equipment end water injection pressure gauge P IN1 , P IN2 and P IN3 And the water pressure gauge P at the equipment end O1 , P O2 and P O3 , which are respectively set as Figure 2 The individual positions shown are used to measure the main unit water outlet pressure, main unit return water pressure, equipment end water injection pressure and equipment end water outlet pressure, so as to calculate the pressure difference between the main unit water outlet pressure and the main unit return water pressure of the chilled water main unit, and the pressure difference between the equipment end water injection pressure and the equipment end water outlet pressure. Based on the parameters previously obtained, the control device 203 further considers the pressure difference information to optimize the control method and output a control signal to adjust the individual water injection flow rates injected into the target devices MAU1, MAU2 and MAU3, more accurately meet the individual heat dissipation requirements of each target device, and further optimize the energy saving benefits.

[0030] In order to further optimize the energy-saving benefits of the water supply control system of the chiller, some embodiments of the present disclosure provide the application of a neural network algorithm to the water supply control system of the chiller. In some embodiments, the water supply control system of the chiller applies artificial intelligence, which simulates the thinking and judgment of human intelligence through a computer program, and can read a large amount of information from the factory end in a short time to learn and establish an algorithm model to correctly and effectively meet the individual heat dissipation requirements of each purpose equipment. For example, the water supply control system of the chiller disclosed in the present disclosure can apply a machine learning algorithm, and the establishment of its algorithm model can first provide a set of raw data / data, and retrieve the feature data from the raw data / data through human knowledge, and then hand over the feature data to the computer program to construct a model from the feature data, and then use the constructed model to interpret the actual operation information afterwards. In the field of machine learning algorithms, a further development is a deep learning algorithm, which uses a computer program to directly learn a large amount of input data to construct a model, and no longer needs to retrieve feature data steps based on human knowledge. In the field of deep learning algorithms, deep neural network algorithms are more detailed algorithm models that can be used to more accurately analyze large amounts of information and provide more accurate interpretation results, which helps modern plant management to analyze large amounts of information. The following embodiments of the present disclosure provide applications of neural network algorithms in water supply control systems for chillers.

[0031] See also Figure 6 . Figure 6 Schematic diagram of a water supply control system and control method of a chiller provided in some embodiments of the present disclosure. Figure 6As shown, the water supply control system 600 of the chilled water host may further include a processing unit 604, which is used to store and execute a neural network architecture to optimize the control device 203 to adjust the water injection flow rate injected into the target devices MAU1, MAU2 and MAU3 respectively. The establishment of the neural network architecture of the water supply control system 600 suitable for the chilled water host is formed by inputting historical data previously received from the control device 203 into the neural network architecture for training, the historical data including information such as the host outlet water temperature, the host return water temperature, the device end water injection temperature, and the device end water outlet temperature, the historical data further includes the host outlet water flow rate, the actual water injection flow rate injected into the target device, the ambient temperature and humidity, the external air enthalpy, the wet bulb temperature, the host outlet water pressure, the host return water pressure, the device end water injection pressure, and the device end return water pressure parameters to optimize the training of the neural network architecture. The control device 203 may include a storage unit 605 to store the historical data, or the storage unit 605 may be arranged at another location other than the control device, for example, stored in an independent hard disk other than the control device 203 and coupled to the control device 203, so that the information received and the output signals of the control device 203 are transmitted to the storage unit 605 for storage.

[0032] See also Figure 8 , Figure 8 This is a flow chart for establishing and using the neural network architecture of the disclosed embodiment. In step 801, the aforementioned historical data previously received from the control device 203 is input into the neural network architecture for training. In step 802, based on the training of step 801, an algorithm model of the neural network architecture is constructed. In step 803, the neural network architecture analyzes the information received by the control device 203. In some embodiments, the neural network architecture can analyze the temperature difference between the host water outlet temperature and the host water return temperature, and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature of the destination devices MAU1, MAU2 and MAU3, to generate an analysis result signal. In step 804, the neural network architecture outputs the analysis result signal for the control device 203 to adjust the water injection flow rate injected into the destination devices MAU1, MAU2 and MAU3 respectively. In some embodiments, the water injection flow rate injected into the destination equipment MAU1, MAU2 and MAU3 can be achieved by the control device outputting a control signal to control the water flow rate of the water outlet branch lines L11, L12, L13 and / or the water return branch lines L21, L22, L23 respectively. Figure 7 The return water flow control valves V1, V2 and V3 arranged on the return water branch lines L21, L22, L23 connected to the destination equipment MAU1, MAU2 and MAU3 as shown in the embodiment are adjusted, but the present invention is not limited to this.

[0033] In some embodiments, the neural network architecture is an algorithm model including an input layer, an output layer, and a plurality of hidden layers between the input layer and the output layer, wherein the number of the hidden layers is, for example, at least four layers, and the input layer is used to collect information to be analyzed input from the outside. In the water supply control system of the ice water host disclosed in the present invention, the information to be analyzed includes the host water outlet temperature, host water return temperature, device-end water injection temperature, and device-end water outlet temperature measured on the above-mentioned water outlet main line L10, water injection branch lines L11, L12, and L13, return water main line L20, return water branch lines L21, L22, and L23, and destination equipment MAU1, MAU2, and MAU3, or further includes the host water outlet flow, the actual water injection flow of each destination equipment, the host water outlet pressure, the host water return pressure, the device-end water injection pressure and the device-end water outlet pressure of each destination equipment, the ambient temperature and humidity, the external air enthalpy value, and the wet-bulb temperature. The information is sequentially transmitted to the hidden layers via the input layer for hierarchical calculation. Each of the hidden layers is provided with different parameters for the input information, and each parameter is assigned a weight (percentage value). The change and final setting of the weights of the parameters are gradually adjusted through historical records of multiple pieces of the above information. The adjustment process is the "training" established by the neural network architecture.

[0034] In some embodiments, the algorithm of the neural network architecture includes an evolutionary algorithm, and the initialization setting value of the population size is at least 10, further at least 20, or further at least 30; the maximum number of iterations of the set population is at least 10, further at least 30, or further at least 50; when performing a hybridization operation step according to the hybridization probability, the hybridization probability is set to 0.8; when performing a mutation operation step according to the mutation probability, the mutation probability is set to 0.2.

[0035] See also Figure 7 . Figure 7 So Figure 6 Based on the schematic diagram shown in FIG. 1 , a schematic diagram of a water supply control system of a chiller is further provided. The water supply control system 700 of the chiller may further include return flow control valves V1, V2 and V3 coupled to the control device 203 and arranged on the return branch lines L21, L22 and L23 connected to the destination equipment MAU1, MAU2 and MAU3. The control device 203 may output a control signal to control the return flow control valves V1, V2 and V3 to adjust the return flow of the destination equipment MAU1, MAU2 and MAU3, so as to optimize the performance of the water supply control system of the chiller. In addition, the water supply control system 700 of the chiller may further include a host outlet water pressure gauge PO , Main engine return water pressure gauge P IN , Equipment end water injection pressure gauge P IN1 , P IN2 and P IN3 And the water pressure gauge P at the equipment end O1 , P O2 and P O3 , to measure the host water outlet pressure, host return water pressure, equipment end water injection pressure and equipment end water outlet pressure, so as to calculate the pressure difference between the host water outlet pressure and the host return water pressure of the chiller host, as well as the pressure difference between the equipment end water injection pressure and the equipment end water outlet pressure, so as to optimize the water supply control system performance of the chiller host.

[0036] See also Fig. 9 . Fig. 9 Some embodiments of the present disclosure provide for use of Figure 7 In step 901, the pump 202 is used to inject the chilled water outputted from the chilled water host 201 into a plurality of destination devices MAU1, MAU2 and MAU3 for heat exchange.

[0037] In step 902, the control device 203 collects the temperature T of the water outlet of the main unit. O The measured main engine outlet water temperature and main engine return water end thermometer T IN Measured host return water temperature, equipment end water injection thermometer T IN1 , T IN2 and T IN3 The measured water injection temperature at the equipment end and the water outlet temperature at the equipment end T O1 , T O2 and T O3 The measured device-end water outlet temperature information is used to calculate the temperature difference between the host water outlet temperature and the host return water temperature, and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature of the destination devices MAU1, MAU2 and MAU3.

[0038] In step 903, the control device 203 outputs a signal to adjust the water injection flow rate injected into the destination devices MAU1, MAU2 and MAU3 based on the temperature difference between the host water outlet temperature and the host return water temperature, and the temperature difference between the individual device-end water injection temperature and the device-end water outlet temperature of the destination devices MAU1, MAU2 and MAU3.

[0039] In some embodiments of the present disclosure, the above steps 901 to 903 may be repeated to optimize the performance of the water supply control system of the chiller.

[0040] The method of the water supply control system of the chilled water host disclosed in the present invention can use the temperature difference between the host outlet water temperature and the host return water temperature, and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature of the target devices MAU1, MAU2 and MAU3 as the main basis for adjusting the water injection flow rate injected into the target devices MAU1, MAU2 and MAU3, but is not limited to this. The method of the water supply control system of the chilled water host disclosed in the present invention can further use other information as an auxiliary basis for adjusting the water injection flow rate injected into the target devices MAU1, MAU2 and MAU3.

[0041] In some embodiments of the present disclosure, in step 902, the control device 203 further collects the main unit water outlet pressure gauge P O The measured main engine water outlet pressure and main engine return water pressure gauge P IN The measured return water pressure of the main engine and the water injection pressure gauge P of the destination equipment MAU1, MAU2 and MAU3 IN1 , P IN2 and P IN3 The measured water injection pressure at the equipment end and the water outlet pressure gauge P O1 , P O2 and P O3 The measured device-end water outlet pressure information is used to calculate the pressure difference between the host water outlet pressure and the host return water pressure, as well as the pressure difference between the device-end water injection pressure and the device-end water outlet pressure, to further confirm whether the water injection flow adjusted in step 903 to be injected into the target devices MAU1, MAU2 and MAU3 accurately meets the needs of the target devices MAU1, MAU2 and MAU3.

[0042] In some embodiments of the present disclosure, in step 902, the control device 203 may further collect the actual water outlet flow of the chilled water host 201 measured by the host water outlet flow meter F, and the actual water injection flow rates injected into the destination devices MAU1, MAU2 and MAU3 respectively measured by the destination device water injection flow meters F1, F2 and F3, so as to optimize the adjustment of the water injection flow rates injected into the destination devices MAU1, MAU2 and MAU3 in step 903.

[0043] In some embodiments of the present disclosure, in step 902, the control device 203 may further collect the ambient temperature and humidity of the destination devices MAU1, MAU2 and MAU3 measured by the ambient temperature and humidity meters TT1, TT2 and TT3 respectively, so as to optimize the water injection flow rate of the destination devices MAU1, MAU2 and MAU3 adjusted in step 903.

[0044] In some embodiments of the present disclosure, the control device 203 may further include a processing unit 604 to store and execute a neural network architecture to optimize the step 903 of adjusting the water injection flow rate of the injection destination devices MAU1, MAU2 and MAU3. The establishment of the neural network architecture can refer to Figure 8 The flowchart and the above Figure 8 Flowchart description of the process.

[0045] In some embodiments of the present disclosure, step 903 of adjusting the water injection flow rate injected into the destination devices MAU1, MAU2 and MAU3 further includes calculating, through the temperature difference between the host water outlet temperature and the host return water temperature, and the temperature difference information between the individual device-end water injection temperature and the device-end water outlet temperature of the destination device, reducing the host water outlet pressure provided by the pump under the load condition, and controlling the return water flow valves V1, V2 and V3 of the destination devices MAU1, MAU2 and MAU3 to adjust the return water flow rate of the destination devices MAU1, MAU2 and MAU3, so as to reduce the overall load of the chilled water system, thereby saving electricity.

[0046] In order to more clearly demonstrate the energy-saving benefits of the embodiments of the present disclosure, the following examples are provided.

[0047] Example 1

[0048] This example compares the actual factory operation, the method of adjusting the chilled water injection flow rate by using the pressure difference between the main water outlet pressure and the return water pressure of the chilled water main unit, and the pressure difference between the equipment end water injection pressure and the equipment end water outlet pressure of the destination device farthest from the chilled water main unit (hereinafter referred to as "pressure difference mode"), and the method of adjusting the chilled water injection flow rate by using the pressure difference between the main water outlet pressure and the return water pressure of the chilled water main unit and the pressure difference between the equipment end water injection pressure and the equipment end water outlet pressure of the destination device farthest from the chilled water main unit (hereinafter referred to as "pressure difference mode"), Figure 7 The water supply control system of the chilled water host shown mainly refers to the temperature difference between the host outlet water temperature and the host return water temperature of the chilled water host, and the temperature difference information between the equipment end water injection temperature and the equipment end water outlet temperature of individual destination equipment (hereinafter referred to as "temperature difference mode") to adjust the chilled water injection flow rate for six consecutive weeks of weekly power consumption comparison.

[0049] Table 1

[0050] Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Difference in electricity consumption (%) -4.1％ -2.4％ -2.5％ -2.8％ -2.6％ -2.3％

[0051] From the power consumption comparison in Table 1 above, it can be seen that the control method of the water supply control system of the chiller using the temperature difference mode reduces the power consumption by 2.3 to 4.1% compared with the control method of the pressure difference mode. The control method of the water supply control system of the chiller using the temperature difference mode can simultaneously meet the heat dissipation requirements of various purpose equipment and save energy more effectively. For large factories, the above power consumption reduction not only saves electricity, effectively reduces the factory operation cost, but also contributes to environmental protection.

[0052] The features of several embodiments have been summarized above so that those skilled in the art can better understand the aspects of the present disclosure. Those skilled in the art will appreciate that they can readily use the present disclosure as a basis for designing or modifying other processes and structures to implement the same purposes and / or achieve the same advantages of the embodiments introduced herein. Those skilled in the art will also appreciate that these equivalent constructions should not depart from the spirit and scope of the present disclosure, and that they may make various changes, substitutions, and modifications thereto.

[0053] Explanation of symbols

[0054] 100: Factory cooling system

[0055] 101: Ice water host

[0056] 102: Pump

[0057] 103: Destination device

[0058] 104: Cooling tower

[0059] 105: Cooling pump

[0060] 106: The scope of the water supply control system of the chiller explored in this disclosure

[0061] 200: Water supply control system for chiller

[0062] 201: Ice water host

[0063] 202: Pump

[0064] 203: Control device

[0065] 300: Water supply control system for chiller

[0066] 400: Water supply control system for chiller

[0067] 500: Water supply control system for chiller

[0068] 600: Water supply control system for chiller

[0069] 604: Processing unit

[0070] 605: Storage unit

[0071] 700: Water supply control system for chiller

[0072] TT1,TT2,TT3: Ambient temperature and humidity meter

[0073] F: Main unit water flow meter

[0074] F1, F2, F3: Target equipment water injection flow meter

[0075] L1: water outlet line

[0076] L10: Water outlet main line

[0077] L11, L12, L13: Water injection branch lines

[0078] L2: Return line

[0079] L20: Return main line

[0080] L21, L22, L23: Return branch line

[0081] MAU1, MAU2, MAU3: destination device

[0082] P O :Host water outlet pressure gauge

[0083] P IN :Host return water pressure gauge

[0084] P IN1 ,P IN2 ,P IN3 :Water injection pressure gauge at the equipment end

[0085] P O1 ,P O2 ,P O3 :Water pressure gauge at the equipment end

[0086] T O :Thermometer at water outlet of main engine

[0087] T IN :Return water end thermometer of main engine

[0088] T IN1 ,T IN2 ,T IN3 :Device end water injection thermometer

[0089] T O1 ,T O2 ,T O3 :Device outlet water thermometer

[0090] V1, V2, V3: Return flow control valve.

Claims

1. A method for controlling a water supply control system of a chiller, comprising: a) Using a pump to inject the chilled water output from the chilled water host into multiple destination devices for heat exchange; b) collecting the host outlet water temperature, host return water temperature, device end water injection temperature and device end outlet water temperature of the ice water output by the ice water host; c) adjusting the water injection flow rate injected into the destination device based on the temperature difference between the host water outlet temperature and the host water return temperature, and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature of each of the destination devices; and d) repeating steps a) to c) to optimize the performance of the water supply control system of the chiller; and A neural network framework is provided, which is trained based on multiple sets of historical data obtained from steps b) to c), wherein the neural network framework determines to adjust the water injection flow rate injected into the target equipment respectively.

2. The control method according to claim 1, further comprising: In step b), the actual water outlet flow rate of the chilled water output from the chilled water host and the actual water injection flow rate injected into the destination device are further collected to optimize the water injection flow rate injected into the destination device in step c).

3. The control method according to claim 1, further comprising: In step b), the ambient temperature and humidity of the target device are further collected to optimize the water injection flow rate of the target device in step c).

4. The control method according to claim 1, further comprising: In step b), the host water outlet pressure of the chilled water host, the host water return pressure of the chilled water host, and the device-side water injection pressure and the device-side water outlet pressure of each of the destination device ends are further collected.

5. The control method according to claim 1, In step b), the enthalpy value of the external air is further collected to optimize the water injection flow rate of adjusting the injection into the target device in step c). 6 . The control method according to claim 1 , wherein the adjusting of the water injection flow rate injected into the destination device in step c) further comprises adjusting the return water flow rate of the destination device.

7. A method for controlling a water supply control system of a chiller, comprising: a) Using a pump to inject the chilled water output from the chilled water host into multiple destination devices for heat exchange; b) collecting the host outlet water temperature and host return water temperature of the chilled water output by the chilled water host, as well as the device end water injection temperature and device end outlet water temperature of the plurality of chilled water reaching the destination device end; and c) inputting the temperature difference between the host water outlet temperature and the host water return temperature, and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature of each of the destination devices into a neural network framework, and the neural network framework makes a judgment to adjust the water injection flow rate injected into the destination device, wherein the neural network framework is trained based on historical data including the temperature difference between the host water outlet temperature and the host water return temperature, and the temperature difference between the device-end water injection temperature and the device-end water outlet temperature of each of the destination devices.

8. The control method according to claim 7, wherein the historical data further includes data selected from the group consisting of: the host water outlet flow, the actual water injection flow injected into the destination device, the ambient temperature and humidity, the external air enthalpy, the wet bulb temperature, the host water outlet pressure, the host return water pressure, the destination device end water injection pressure and the destination device end return water pressure parameters.

9. A water supply control system for a chiller, comprising: Ice water host; A water outlet pipeline, comprising a main water outlet pipeline connected to the water chiller, the main water outlet pipeline being connected to a plurality of water injection branch pipelines, which are respectively connected to a plurality of destination devices, so as to inject the chilled water output from the water chiller into the destination devices for heat exchange; A water return pipeline, comprising a water return main line connected to the water chiller, the water return main line being connected to a plurality of water return branch lines, each of which is connected to the destination device individually, so as to return the water after heat exchange flowing out of the destination device to the water chiller; A thermometer at the water outlet of the host, which is arranged on the water outlet main line near the ice water host to measure the water outlet temperature of the host; A main unit return water end thermometer, which is arranged on the return water main line near the ice water main unit to measure the main unit return water temperature; A plurality of equipment-end water injection thermometers, which are respectively arranged on the water injection branch lines near the destination equipment end to measure the equipment-end water injection temperature; A plurality of device-end outlet water thermometers, which are respectively arranged on the return water branch line near the destination device end to measure the device-end outlet water temperature; and A control device, which controls the water injection flow rate of the ice water host to inject into the destination device respectively based on the temperature difference between the host outlet water temperature and the host return water temperature, and the temperature difference information between the device-end water injection temperature and the device-end water outlet temperature of each of the destination devices, wherein the control device further comprises: A processing unit is used to store and execute a neural network architecture to optimize the control device to adjust the water injection flow rate injected into the destination device.

10. The water supply control system of the ice water main unit according to claim 9, wherein the water supply control system further comprises: A main unit water outlet pressure gauge to measure the water outlet pressure of the ice water main unit; A main unit return water pressure gauge to measure the return water pressure of the chilled water main unit; A water injection pressure gauge at the equipment end to measure the water injection pressure at the target equipment end; and The device-side water outlet pressure gauge is used to measure the water outlet pressure of the target device-side.

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