Water flow control method and system for air conditioning equipment and computing equipment

Abstract

The invention provides a water flow control method and system for air conditioning equipment and computing equipment, relates to the field of water flow control, and solves the technical problems that in the prior art, when the air conditioning equipment runs, due to water flow fluctuation, a water flow switch of the air conditioning equipment generates a false alarm signal, the stability of the air conditioning system is reduced, and the false alarm rate is high. The method comprises the following steps: acquiring temperature data, and preprocessing the temperature data; determining an operation mode of the air-conditioning equipment according to the indoor and outdoor temperatures; water temperature differences in different operation modes are obtained through the preprocessed environment data; judging whether the water temperature difference is marked as abnormal or not based on a preset misjudgment criterion; if yes, a reminding signal is sent out; if not, marking that the water flow control is completed; wherein the misjudgment criterion comprises a first misjudgment criterion and a second misjudgment criterion; pre-increased water flow is calculated based on the indoor and outdoor environment temperature, and water flow control is conducted according to the pre-increased water flow. The method is used in the air conditioner water flow control process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water flow control, in particular to a water flow control method and system for air conditioning equipment and a computing device. BACKGROUND

[0002] The cooling capacity of the refrigeration unit of the air conditioning equipment is delivered to the air conditioning terminal by water as a refrigerant, and the delivery efficiency is essentially determined by the heat absorption of water. The water flow directly affects the delivery amount of cold and heat. If the delivery amount is insufficient, it will lead to insufficient supply of cold and heat at the terminal. If the delivery amount exceeds the demand of the terminal, the surface temperature of the terminal heat exchanger will be too low, which will cause freezing risk and damage to the air conditioning equipment.

[0003] In the prior art, when the air conditioning equipment is running, false alarm signals may occur due to water flow fluctuations or impurities being stuck, which may further cause false alarms or unexpected shutdown of the air conditioning unit, thereby causing the technical problems of decreased stability of the air conditioning system and high false alarm rate. SUMMARY

[0004] The present application provides a water flow control method and system for air conditioning equipment and a computing device, which solves the technical problems of decreased stability of the air conditioning system and high false alarm rate caused by false alarm signals of the water flow switch of the air conditioning equipment due to water flow fluctuations or impurities being stuck when the air conditioning equipment is running in the prior art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: In a first aspect, a water flow control method for air conditioning equipment is provided, comprising: obtaining temperature data and preprocessing the temperature data; wherein the temperature data includes: inlet water temperature and outlet water temperature and indoor and outdoor environmental temperature; determining the operation mode of the air conditioning equipment according to the indoor and outdoor temperature; Obtaining water temperature difference under different operation modes through preprocessed environmental data; wherein the water temperature difference includes: refrigeration water temperature difference and heating water temperature difference; Judging whether the water temperature difference is marked as abnormal based on a preset misjudgment criterion; if yes, issuing a warning signal; if no, marking as completing water flow control; wherein the misjudgment criterion includes: misjudgment criterion one and misjudgment criterion two; Calculating the pre-increased water flow based on the indoor and outdoor environmental temperature, and controlling the water flow according to the pre-increased water flow.

[0006] In combination with the first aspect described above, in a possible implementation manner, the preprocessing of the temperature data comprises: Retrieving the temperature data, setting the sliding window as N, and calculating the temperature data mean of the latest t points through the formula ;​ The high-frequency temperature data mean is down-sampled and the low-frequency temperature data mean is linearly interpolated, and is marked as the pre-processing of the temperature data being completed.

[0007] In combination with the first aspect, in a possible implementation manner, the obtaining manner of the refrigeration water temperature difference comprises: The operating mode of the air conditioning equipment is called, wherein the operating mode comprises: a refrigeration mode and a heating mode; It is judged whether the outdoor environment temperature is less than a preset high temperature threshold value when the refrigeration is operated; Yes, the process variable Y1 is calculated by the formula EWT is the water inlet temperature of the air conditioner; No, the process variable Y1 is calculated by the formula The process variable Y2 is calculated by the formula Y2=0.1366×compressor operating frequency-5.45; The refrigeration water temperature difference ZR is calculated by the formula ZR=Y1+Y2+a; wherein a is a refrigeration water temperature difference correction coefficient.

[0008] In combination with the first aspect, in a possible implementation manner, the obtaining manner of the preset misjudgment criterion one comprises: When X<ZR, the air conditioning equipment is marked as the water temperature difference being normal; wherein X represents the absolute value of the water temperature difference, and X=|EWT-LWT|, LWT is the water outlet temperature of the air conditioner; When ZR≤X≤ZR+2, the air conditioning equipment is marked as the water temperature difference being normal, the compressor frequency corresponding to the refrigeration water temperature difference ZR is obtained, and the compressor frequency of the air conditioning equipment is adjusted to the compressor frequency corresponding to ZR; When X>ZR+2, the water flow is marked as being insufficient, and the air conditioning equipment is marked as the water temperature difference being abnormal.

[0009] In combination with the first aspect, in a possible implementation manner, the obtaining manner of the heating water temperature difference comprises: It is judged whether the outdoor environment temperature is greater than a preset low temperature threshold value when the heating is operated; Yes, the heating water temperature difference ZL is calculated by the formula Y=0.12×compressor operating frequency+0.71; No, the heating water temperature difference ZL is calculated by the formula Y=0.12×compressor operating frequency-0.29.

[0010] In combination with the first aspect, in a possible implementation manner, the obtaining manner of the preset misjudgment criterion two comprises: The heating water temperature difference ZL is called, and if X<ZL, the air conditioning equipment is marked as the water temperature difference being normal;​ If X >= ZL+b, the air conditioning equipment is marked as water temperature difference normal, and the compressor frequency corresponding to the heating water temperature difference ZL is obtained, and the compressor frequency of the air conditioning equipment is adjusted to the compressor frequency corresponding to ZL; wherein, b is a heating water temperature difference correction coefficient, and 0<=b<1; If X >= ZL+1+b, the water flow is marked as insufficient, and the air conditioning equipment is marked as water temperature difference abnormal.

[0011] In combination with the above first aspect, in a possible implementation manner, the correction coefficient comprises a heating water temperature difference correction coefficient and a refrigeration water temperature difference correction coefficient. The indoor temperature is retrieved as T1, the outdoor temperature is retrieved as T2, the preset overall heat transfer coefficient of the envelope is K, and the heat transfer area is A. The heat transfer amount of the air conditioning equipment is calculated by the formula Q=K*A*(T1-T2). The absolute value X of the water temperature difference is retrieved. The current water flow is calculated by the formula Q1=Q / (T1-T2). ; ; The absolute value X of the water temperature difference is retrieved. The current water flow is calculated by the formula Q1=Q / (T1-T2). ; ; wherein, c is the specific heat capacity of water, the current outlet water temperature is T2, and the inlet water temperature is T1. ; ; The refrigeration water temperature difference correction coefficient a is calculated by the formula a=(T1-T2) / T1. ; If a is greater than 0, the heating water temperature difference correction coefficient b=[a]-a; otherwise, the heating water temperature difference correction coefficient b=[a]+a+1; wherein, [a] represents the maximum integer not exceeding a.

[0012] In combination with the above first aspect, in a possible implementation manner, the water flow increased based on the indoor and outdoor environmental temperature comprises: The heat transfer amount of the air conditioning equipment is retrieved as Q, and the inlet water temperature is retrieved as T1. The preset target outlet water temperature is retrieved as T2. ; ; The water flow increased is calculated by the formula Q1=Q / (T2-T1). . .

[0013] The second aspect provides a water flow control system for air conditioning equipment, comprising a communication unit and a processing unit. The communication unit is configured to acquire temperature data and pre-process the temperature data, wherein the temperature data comprises water inlet temperature, water outlet temperature and indoor and outdoor environment temperature; determine the operation mode of the air conditioning equipment according to the indoor and outdoor temperature; and acquire the water temperature difference under different operation modes through the pre-processed environment data, wherein the water temperature difference comprises refrigeration water temperature difference and heating water temperature difference. The processing unit is configured to determine whether the water temperature difference is marked as abnormal based on a preset misjudgment criterion; if yes, a prompt signal is sent; and if no, the water temperature difference is marked as completed water flow control, wherein the misjudgment criterion comprises misjudgment criterion one and misjudgment criterion two. The water flow control is performed according to the pre-increased water flow based on the indoor and outdoor environment temperature.

[0014] In a third aspect, the present application provides an air conditioning equipment water flow control calculation device, comprising a processor and a storage medium; the storage medium comprises instructions, and the processor is configured to execute the instructions to implement the method described in the first aspect and any possible implementation manner of the first aspect. The air conditioning equipment water flow control calculation device can be an electronic device or a chip in an electronic device.

[0015] The present application provides an air conditioning equipment water flow control method, system and calculation device, which can correct the noise, abnormal value and deviation that may exist in the original temperature data through pre-processing of the temperature data, thereby improving the data quality through pre-processing and providing reliable data input for subsequent analysis; and reduce the misjudgment of the water temperature difference caused by the fluctuation of the frequency through the preset misjudgment criterion.

[0016] It should be understood that the description of technical features, technical solutions, advantages or similar language in the present application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it can be understood that the description of a feature or advantage means that the specific technical feature, technical solution or advantage is included in at least one embodiment. Therefore, the description of technical features, technical solutions or advantages in the specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and advantages described in the embodiments can be combined in any appropriate manner. Those skilled in the art will understand that the embodiments can be implemented without one or more specific technical features, technical solutions or advantages of a particular embodiment. In other embodiments, additional technical features and advantages can be identified in specific embodiments that do not embody all embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A system architecture diagram of an air conditioning equipment water flow control system provided by the embodiments of the present application is provided. Figure 2A flowchart of a water flow control method for an air conditioning device according to an embodiment of the present application is provided. Figure 3 A flowchart of another water flow control method for an air conditioning device according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0018] In the description of the present application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B. "And / or" in this document is only a description of the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more. "First", "second", and the like do not limit the quantity and execution order, and "first", "second", and the like do not necessarily mean different.

[0019] It should be noted that in the present application, "exemplary" or "for example" means to serve as an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0020] To solve the technical problem that in the prior art, when the air conditioning device is running, false alarm signals may occur due to water flow fluctuations or impurities being stuck, thereby causing false alarms or unexpected shutdowns of the air conditioning unit, thereby causing the stability of the air conditioning system to decrease and the false alarm rate to be high, an air conditioning device water flow control method is provided in the embodiments of the present application, which comprises: obtaining temperature data and preprocessing the temperature data; wherein the temperature data includes: inlet water temperature and outlet water temperature and indoor and outdoor environmental temperature; determining the running mode of the air conditioning device according to the indoor and outdoor temperature; Obtaining the water temperature difference under different running modes through the preprocessed environmental data; wherein the water temperature difference includes: the refrigeration water temperature difference and the heating water temperature difference; Judging whether the water temperature difference is marked as abnormal based on a preset misjudgment criterion; if yes, a warning signal is sent; if no, the water flow control is marked as complete; wherein the misjudgment criterion includes: misjudgment criterion one and misjudgment criterion two; The water flow rate is calculated based on the indoor and outdoor environment temperature, and the water flow rate control is performed according to the pre-increased water flow rate. Based on this, the water flow rate in the system is estimated to meet the normal operation water flow rate through various sensors and the compressor frequency feedback of the air conditioning equipment itself, and a reasonable water temperature difference reference is set for the refrigeration / heating mode, so as to avoid the threshold misuse caused by mode confusion, and reduce the false alarm caused by mode misjudgment.

[0021] As Figure 2 shown, the water flow rate control method for the air conditioning equipment provided by the embodiment of the application comprises: obtaining the water temperature difference under different operation modes through the pre-processed environment data and judging whether the water temperature difference is marked as abnormal based on the preset misjudgment criterion; The water temperature difference includes the refrigeration water temperature difference and the heating water temperature difference. In some implementations, the operation mode of the air conditioning equipment is called, wherein the operation mode includes the refrigeration mode and the heating mode. It is judged whether the outdoor environment temperature is less than the preset high temperature threshold when the refrigeration operation is performed. If yes, the process variable Y1 is calculated through the formula ; wherein EWT is the water inlet temperature of the air conditioner. If no, the process variable Y1 is calculated through the formula . The process variable Y2 is calculated through the formula Y2=0.1366*compressor operating frequency-5.45. The refrigeration water temperature difference is calculated through the formula ZR=Y1+Y2+a; wherein a is the refrigeration water temperature difference correction coefficient. When X<ZR, the air conditioning equipment is marked as normal water temperature difference; wherein X represents the absolute value of the water temperature difference, and X=|EWT-LWT|, LWT is the water outlet temperature of the air conditioner. When ZR≤X≤ZR+2, the air conditioning equipment is marked as normal water temperature difference, and the compressor frequency corresponding to the refrigeration water temperature difference ZR is obtained, and the compressor frequency of the air conditioning equipment is adjusted to the compressor frequency corresponding to ZR. When X>ZR+2, the water flow rate is marked as insufficient, and the air conditioning equipment is marked as abnormal water temperature difference.

[0022] For example, a certain commercial air conditioning unit (refrigeration mode) needs to monitor the water temperature difference (refrigeration water temperature difference ZR) in real time to judge the system operation state; the preset parameters and real-time data are as follows: The preset parameter high temperature threshold (refrigeration mode judgment condition) is Thigh_thresh=35℃. Refrigeration water temperature difference correction coefficient: a = 1.2℃ (obtained by historical data fitting or experimental calibration); Compressor operating frequency and Y2 relationship: Y2 = 0.1366 x f 5.45 (f is the compressor frequency, unit: Hz); Real-time data acquisition (after pretreatment) Operating mode: refrigeration mode; outdoor environment temperature: Toutdoor = 32℃ (< 35℃, meet "Yes" condition); Inlet water temperature: EWT = 10℃; outlet water temperature: LWT = 17℃; current compressor frequency: fcurrent = 48Hz; Because Toutdoor = 32℃ < Thigh_thresh = 35℃, the "Yes" condition is triggered, and the calculation logic of Y1 is entered (assuming that the formula of Y1 under this condition is Y1 = EWT x 0.6 = 10 x 0.6 = 6℃; According to the formula Y2 = 0.1366 x f 5.45, the current compressor frequency fcurrent = 48Hz is substituted: Y2 = 0.1366 x 48 5.45 = 6.5568 5.45 = 1.1068℃ ≈ 1.11℃; Calculate the refrigeration water temperature difference ZR According to the formula ZR = Y1 + Y2 + a, substitute Y1 = 6℃, Y2 = 1.11℃, a = 1.2℃: Then ZR = 6 + 1.11 + 1.2 = 8.31℃; According to the formula X = |EWT LWT|, substitute EWT = 10℃, LWT = 17℃: Then X = |10 17| = 7℃; According to the preset threshold X < ZR, that is, the normal range 7℃ < 8.31℃; The air conditioning equipment water temperature difference is normal, which is marked as no adjustment is needed; because X < ZR, the system does not need to adjust the compressor frequency or water flow.

[0023] As Figure 3 shown, the water flow control method for air conditioning equipment provided by the embodiment of the application comprises: Based on the indoor and outdoor environment temperature, the pre-increased water flow is calculated; In some implementations, the indoor temperature is , the outdoor temperature is , the preset overall heat transfer coefficient of the enclosure is K, and the heat exchange area is A; The formula is Calculate the heat exchange of air conditioning equipment ; Get the current outlet water temperature And the inlet water temperature is ; The preset target water outlet temperature is ; By formula Calculate the expected increase in water flow ; Where c is the specific heat capacity of water.

[0024] For example, assume that the parameters of an air conditioning refrigeration system are as follows: water inlet temperature The current outlet water temperature is 12℃ The target water outlet temperature is 18℃; 15℃; indoor temperature The outdoor temperature is 26℃. 35℃; The comprehensive heat transfer coefficient K of the enclosure structure is set to 1.2kW / (m 2 / cdotd℃), heat exchange area A is 100m 2 ; The specific heat capacity c of water is 4.186kJ / (kg\cdotp℃); By formula Calculate the heat exchange of air conditioning equipment =1.2×100×(26-35)=-1080kW; where the negative sign indicates that heat flows from indoors to outdoors, then Take the absolute value during the actual operation; By formula Calculate the expected increase in water flow = =42.9kg / s; It should be noted that if the load of the air conditioning equipment changes over time (such as the increase or decrease of indoor personnel, equipment start and stop), real-time monitoring is required. 、 , and adjust the flow rate; if the pump head H and pipeline resistance coefficient ζ are known, the pump characteristic curve Verify the feasibility of increasing water flow; among which, is the density of water, and g is the acceleration due to gravity.

[0025] Based on the above technical solution, the system shifts from "passive alarm" to "active adjustment", solving the fundamental cause of water flow fluctuation / insufficiency and avoiding unit shutdown caused by water flow problems (such as insufficient water flow leading to excessive condensing pressure triggering a protective shutdown).

[0026] The above describes the scheme of the embodiments of the present application mainly from the perspective of device implementation. It can be understood that each device, for example, the water flow control calculation device for air conditioning equipment, comprises at least one of the corresponding hardware structure and software module for executing each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be realized in the form of hardware or the combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driven hardware depends on the specific application and design constraints of the technical scheme. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0027] The embodiments of the present application can divide the functional units of the water flow control calculation device for air conditioning equipment according to the above method examples. For example, each functional unit can be divided according to each function, or two or more functions can be integrated in one processing unit. The integrated unit can be realized in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical functional division. Actual implementation can have another division method.

[0028] The processing unit can be a processor or a controller, and the communication unit can be a communication interface, a transceiver, a transceiver, a transceiver circuit, a transceiver device, etc. The communication interface is a general term and can include one or more interfaces. The storage unit can be a memory. When the water flow control calculation device for air conditioning equipment is a chip, the processing unit can be a processor or a controller, and the communication unit can be an input interface and / or an output interface, a pin or a circuit, etc. The storage unit can be a storage unit (e.g., a register, a cache, etc.) within the chip, or a storage unit (e.g., a read-only memory (ROM), a random access memory (RAM), etc.) located outside the chip.

[0029] The communication unit can also be referred to as a transceiver unit. The antenna and control circuit with transceiver function in the air conditioner water flow control calculation device can be regarded as the communication unit of the air conditioner water flow control calculation device, and the processor with processing function can be regarded as the processing unit of the air conditioner water flow control calculation device. Optionally, the device for realizing the receiving function in the communication unit can be regarded as the communication unit, and the communication unit is used for executing the receiving steps in the embodiments of the present application, and the communication unit can be a receiver, a receiver, a receiving circuit, etc. The device for realizing the sending function in the communication unit can be regarded as a sending unit, and the sending unit is used for executing the sending steps in the embodiments of the present application, and the sending unit can be a transmitter, a transmitter, a sending circuit, etc.

[0030] If the integrated unit is realized in the form of a software function module and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application essentially or say the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The storage medium for storing computer software products includes: a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and various media that can store program codes.

[0031] In the implementation process, each step in the method provided by the embodiment can be completed by the integrated logic circuit of hardware in the processor or the instruction in the form of software. The steps of the method disclosed in the embodiments of the present application can be directly embodied as hardware processor execution completion, or executed by a combination of hardware and software modules in the processor.

[0032] The processor in the present application can include, but is not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller unit (MCU), or an artificial intelligence processor, and the like, each of which is a computing device running software, and each of which can include one or more cores for executing software instructions to perform operations or processing. The processor can be a separate semiconductor chip, or can be integrated with other circuits as a semiconductor chip, for example, can be integrated with other circuits (such as coding and decoding circuits, hardware acceleration circuits, or various bus and interface circuits) to form a SoC (system on chip), or can be integrated as a built-in processor in an ASIC. The ASIC integrated with the processor can be packaged separately or packaged together with other circuits. In addition to including cores for executing software instructions to perform operations or processing, the processor can further include necessary hardware accelerators, such as field programmable gate arrays (FPGAs), PLDs (programmable logic devices), or logic circuits implementing special logic operations.

[0033] The memory in the embodiments of the present application can include at least one of the following types: a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM). In some scenarios, the memory can also be a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

[0034] The embodiments of the present application also provide a computer readable storage medium including instructions, which, when executed on a computer, cause the computer to perform any of the above methods.

[0035] The embodiments of the present application also provide a computer program product including instructions, which, when executed on a computer, cause the computer to perform any of the above methods.

[0036] The embodiment of the present application further provides a chip, comprising a processor and an interface circuit, the interface circuit being coupled with the processor, the processor being used to run computer programs or instructions to realize the method described above, and the interface circuit being used to communicate with other modules outside the chip.

[0037] In the above embodiments, the implementation can be achieved by software, hardware, firmware or any combination thereof, entirely or partially. When implemented by software, the implementation can be achieved in the form of a computer program product, entirely or partially. The computer program product comprises one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the flow or function described in the embodiments of the present application is generated, entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or data storage device including one or more servers, data centers, etc. integrated with the medium. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (solid state disk, SSD)), etc.

[0038] Although the present application is described herein in conjunction with various embodiments, other variations of the disclosed embodiments can be understood and implemented by those skilled in the art through viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. Some measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0039] Although the present application has been described in connection with certain specific features and embodiments thereof, it is to be understood that it is provided as an exemplification of the application and is not intended to limit the scope of the application, which is defined in the claims. Various modifications and changes can be made thereto without departing from the spirit and scope of the application. Accordingly, it is intended that all such modifications and changes be included within the scope of the application as claimed. Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method for controlling water flow of air conditioning equipment, characterized in that: Including: Obtain temperature data and preprocess the temperature data; wherein, the temperature data includes: inlet water temperature, outlet water temperature, and indoor and outdoor ambient temperatures; determine the operating mode of the air conditioning equipment according to the indoor and outdoor temperatures; Obtain the water temperature difference under different operating modes through the preprocessed ambient data; wherein, the water temperature difference includes: refrigeration water temperature difference and hot water temperature difference; Judge whether the water temperature difference is marked as abnormal based on a preset misjudgment criterion; if yes, send a reminder signal; if no, mark it as completed water flow control; wherein, the misjudgment criterion includes: misjudgment criterion one and misjudgment criterion two; Calculate the pre-increased water flow based on the indoor and outdoor ambient temperatures and perform water flow control according to the pre-increased water flow.

2. The method for controlling water flow of air conditioning equipment according to claim 1, characterized in that: The preprocessing of the temperature data includes: Retrieve temperature data, set the sliding window to N, and use the formula Calculate the mean temperature data of the last t points ; Downsample the mean value of high-frequency temperature data and perform linear interpolation on the mean value of low-frequency temperature data, and mark it as completed preprocessing of temperature data.

3. The method for controlling water flow of air conditioning equipment according to claim 1, wherein: The acquisition method of the refrigeration water temperature difference includes: Retrieve the operating mode of the air conditioning equipment, wherein the operating mode includes: refrigeration mode and heating mode; Judge whether the outdoor ambient temperature during refrigeration operation is less than a preset high temperature threshold; Yes, then by formula The process variable Y1 is calculated; where EWT is the inlet water temperature of the air conditioner; If not, then use the formula The process variable Y1 is calculated; Calculate process variable Y2 through the formula Y2 = 0.1366 × compressor operating frequency - 5.45; Calculate the refrigeration water temperature difference through the formula ZR = Y1 + Y2 + a; wherein, a is the refrigeration water temperature difference correction coefficient.

4. The method for controlling water flow of air conditioning equipment according to claim 1, characterized in that: The acquisition method of the preset misjudgment criterion one includes: When X < ZR, mark the air conditioning equipment as having a normal water temperature difference; wherein, X represents the absolute value of the water temperature difference, and X = |EWT - LWT|, LWT is the outlet water temperature of the air conditioner; When ZR ≤ X ≤ ZR + 2, mark the air conditioning equipment as having a normal water temperature difference, obtain the compressor frequency corresponding to the refrigeration water temperature difference ZR, and adjust the compressor frequency of the air conditioning equipment to the compressor frequency corresponding to ZR; When X > ZR + 2, mark the water flow as insufficient and mark the air conditioning equipment as having an abnormal water temperature difference.

5. The method for controlling water flow of air conditioning equipment according to claim 1, characterized in that: The acquisition method of the hot water temperature difference includes: Judge whether the outdoor ambient temperature during heating operation is greater than a preset low temperature threshold; If yes, calculate the hot water temperature difference ZL through the formula Y = 0.12 × compressor operating frequency + 0.71; If no, calculate the hot water temperature difference ZL through the formula Y = 0.12 × compressor operating frequency - 0.

29.

6. The method for controlling water flow of air conditioning equipment according to claim 1, characterized in that: The acquisition method of the preset misjudgment criterion two includes: Retrieve the hot water temperature difference ZL, if X < ZL, mark the air conditioning equipment as having a normal water temperature difference; If X >= ZL + b, mark the air conditioning equipment as having a normal water temperature difference, obtain the compressor frequency corresponding to the hot water temperature difference ZL, and adjust the compressor frequency of the air conditioning equipment to the compressor frequency corresponding to ZL; wherein, b is the hot water temperature difference correction coefficient, and 0 ≤ <b < 1; If X >= ZL + 1 + b, mark the water flow as insufficient and mark the air conditioning equipment as having an abnormal water temperature difference.

7. The method for controlling water flow of air conditioning equipment according to claim 1, characterized in that: The acquisition method of the correction coefficient includes: hot water temperature difference correction coefficient and refrigeration water temperature difference correction coefficient; Set the indoor temperature to , the outdoor temperature is , the preset comprehensive heat transfer coefficient of the enclosure structure is K, and the heat exchange area is A; By formula Calculate the heat exchange of air conditioning equipment ; Retrieve the absolute value X of the water temperature difference; By formula Calculate the current water flow ; Where c is the specific heat capacity of water, and the current outlet water temperature is And the inlet water temperature is ; By formula Calculate the cooling water temperature difference correction coefficient a; Determine whether a is greater than 0; if so, the hot water temperature difference correction coefficient b=[a]-a; if not, the hot water temperature difference correction coefficient b=[a]+a+1; where [a] represents the maximum integer not exceeding a.

8. The method for controlling water flow of air conditioning equipment according to claim 7, characterized in that: The method of calculating the pre-increased water flow rate based on the indoor and outdoor ambient temperatures includes: Transfer heat exchange of air conditioning equipment And the inlet water temperature is ; The preset target water outlet temperature is ; By formula Calculate the expected increase in water flow .

9. A water flow control system for air conditioning equipment, characterized in that: include: a communication unit and a processing unit; The communication unit is configured to obtain temperature data and pre-process the temperature data; the temperature data includes: water inlet temperature, water outlet temperature, and indoor and outdoor ambient temperature; determine the operating mode of the air-conditioning equipment based on the indoor and outdoor temperatures; and obtain the water temperature difference under different operating modes using the pre-processed ambient data; the water temperature difference includes: the cooling water temperature difference and the heating water temperature difference; The processing unit is configured to determine whether the water temperature difference is marked as abnormal based on a preset misjudgment criterion; if so, a reminder signal is issued; if not, the water flow control is marked as completed; wherein the misjudgment criterion includes: misjudgment criterion 1 and misjudgment criterion 2; The pre-increased water flow is calculated based on the indoor and outdoor ambient temperatures, and the water flow is controlled according to the pre-increased water flow.

10. A water flow control and calculation device for air conditioning equipment, characterized in that: The invention comprises a memory and a processor, wherein the memory stores executable instructions of the processor; wherein the processor is configured to execute a water flow control method for air-conditioning equipment according to any one of claims 1 to 8 by executing the executable instructions.

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