Air source heat pump system control method, device, apparatus and medium

Abstract

The application discloses an air source heat pump system control method, system, device and storage medium, wherein the method comprises the following steps: acquiring the water supply temperature, return water temperature, environmental temperature of an outdoor environment, indoor temperature where the air source heat pump system is located and the instantaneous change rate of system load; determining the load fluctuation rate according to the water supply temperature, return water temperature, environmental temperature, indoor temperature and instantaneous change rate; and controlling the air source heat pump system to switch modes according to the load fluctuation rate. The application can be widely applied to the technical field of air source heat pumps.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air source heat pump, and in particular, to an air source heat pump system control method, device, apparatus and storage medium. BACKGROUND

[0002] As a kind of efficient, energy-saving and environment-friendly heating and refrigeration equipment, air source heat pump system is widely used in building HVAC system worldwide. The traditional air source heat pump system adjusts the supply water temperature and return water temperature through the frequency control of compressor to meet the heat load demand of different terminal devices. However, the existing system generally has the problem that for different terminal application scenarios, a single control mode is often difficult to balance response speed and energy efficiency optimization.

[0003] Generally, the compressor frequency control of air source heat pump is mainly based on two modes: outlet water temperature control mode and return water temperature control mode. Outlet water temperature control mode can quickly respond to changes in system load, suitable for scenarios with dramatic fluctuations in user demand. Return water temperature control mode adjusts the supply and return water temperature difference of the system smoothly, suitable for relatively stable load scenarios, and can better optimize energy efficiency. However, a single control mode in the face of complex and variable application scenarios, due to the existence of various parameters in complex scenarios that can affect the control of air source heat pump, leading to a decrease in the control accuracy of air source heat pump. Therefore, there is a technical problem to be solved in the related art. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems existing in the prior art.

[0005] To this end, one purpose of the embodiments of the present application is to provide an air source heat pump system control method, system, apparatus and storage medium, which can improve the control accuracy of the air source heat pump system.

[0006] In order to achieve the above technical purpose, the technical solutions adopted by the embodiments of the present application include: an air source heat pump system control method, comprising: obtaining the supply water temperature, return water temperature, outdoor environment temperature, indoor temperature of the air source heat pump system and instantaneous change rate of system load; determining the load fluctuation rate according to the supply water temperature, return water temperature, outdoor environment temperature, indoor temperature and instantaneous change rate; controlling the air source heat pump system to switch modes according to the load fluctuation rate.

[0007] In addition, according to the air source heat pump system control method of the above-mentioned embodiments of the present application, the following additional technical features can also be included:

[0008] Further, in the embodiments of the present application, the load fluctuation rate is determined according to the supply water temperature, the return water temperature, the ambient temperature, the indoor temperature and the instantaneous change rate, and specifically includes:

[0009] The temperature deviation of system supply water is determined according to the supply water temperature.

[0010] The return water temperature deviation value is determined according to the return water temperature.

[0011] The environmental influence value is determined according to the ambient temperature and the indoor temperature.

[0012] The load fluctuation rate is determined according to the temperature deviation, the return water temperature deviation value, the instantaneous change rate and the environmental influence value.

[0013] Further, in the embodiments of the present application, the temperature deviation of system supply water is determined according to the supply water temperature, and specifically includes:

[0014] The first temperature difference is obtained by subtracting the supply water temperature from the set temperature of the air source heat pump;

[0015] The absolute value of the first temperature difference is taken as the temperature deviation of system supply water.

[0016] Further, in the embodiments of the present application, the return water temperature deviation value is determined according to the return water temperature, and specifically includes:

[0017] The second temperature difference is obtained by subtracting the return water temperature from the set temperature of the air source heat pump;

[0018] The absolute value of the second temperature difference is taken as the return water temperature deviation value.

[0019] Further, in the embodiments of the present application, the environmental influence value is determined according to the ambient temperature and the indoor temperature, and specifically includes:

[0020] The third temperature difference is obtained by subtracting the indoor temperature from the ambient temperature;

[0021] The absolute value of the third temperature difference is taken as the environmental influence value.

[0022] Further, in the embodiments of the present application, the load fluctuation rate is determined according to the temperature deviation, the return water temperature deviation value, the instantaneous change rate and the environmental influence value, and specifically includes:

[0023] The temperature deviation, the return water temperature deviation value, the instantaneous change rate and the environmental influence value are input into a first formula to determine the load fluctuation rate; wherein the first formula is:

[0024] L_wave=(∣ΔT_o∣+∣ΔT_r∣+ΔL_sys)÷(T_set+|Tx∣)

[0025] Where L_wave is the load fluctuation rate, |ΔT_o| is the temperature deviation, |ΔT_r| is the return water temperature deviation, ΔL_sys is the instantaneous change rate, |Tx| is the environmental impact value, and T_set is the set temperature of the air source heat pump.

[0026] Furthermore, in this embodiment of the application, the step of controlling the air source heat pump system to switch modes according to the load fluctuation rate specifically includes:

[0027] When the load fluctuation rate is greater than the first preset threshold, the air source heat pump system is controlled to switch to the outlet water temperature control mode.

[0028] When the load fluctuation rate is less than the second preset threshold and the duration is greater than the third time threshold, the air source heat pump system is controlled to switch to the return water temperature control mode.

[0029] On the other hand, embodiments of this application also provide an air source heat pump system control device, including:

[0030] The first processing unit is used to obtain the supply water temperature, return water temperature, outdoor ambient temperature, indoor temperature where the air source heat pump system is located, and instantaneous change rate of system load of the air source heat pump system.

[0031] The second processing unit is used to determine the load fluctuation rate based on the supply water temperature, the return water temperature, the ambient temperature, the indoor temperature, and the instantaneous change rate.

[0032] The third processing unit is used to control the air source heat pump system to switch modes according to the load fluctuation rate.

[0033] On the other hand, this application also provides an air source heat pump system control device, comprising:

[0034] At least one processor;

[0035] At least one memory for storing at least one program;

[0036] When the at least one program is executed by the at least one processor, the at least one processor implements an air source heat pump system control method as described in any one of the inventions.

[0037] In addition, this application also provides a computer-readable storage medium storing processor-executable instructions, which, when executed by a processor, are used to perform an air source heat pump system control method as described in any of the preceding claims.

[0038] The advantages and beneficial effects of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application:

[0039] This application obtains the supply water temperature, return water temperature, outdoor ambient temperature, indoor temperature where the air source heat pump system is located, and the instantaneous rate of change of the system load of the air source heat pump system. Based on these parameters, the load fluctuation rate is determined. The air source heat pump system is then controlled to switch modes according to the load fluctuation rate. This application fully considers parameters such as supply water temperature, return water temperature, outdoor ambient temperature, indoor temperature where the air source heat pump system is located, and the instantaneous rate of change of the system load. The load fluctuation rate is calculated using these parameters, and the air source heat pump system is controlled to switch modes based on the load fluctuation rate. This method can improve the control accuracy of the air source heat pump. Attached Figure Description

[0040] Figure 1 This is a schematic diagram illustrating the steps of an air source heat pump system control method in a specific embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram illustrating the steps of determining the load fluctuation rate based on the supply water temperature, return water temperature, ambient temperature, indoor temperature, and instantaneous change rate in a specific embodiment of the present invention.

[0042] Figure 3 This is a schematic diagram illustrating the steps of determining the temperature deviation of the system water supply based on the water supply temperature in a specific embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram illustrating the steps of determining the return water temperature deviation value based on the return water temperature in another specific embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram illustrating the steps of determining the environmental impact value based on ambient temperature and indoor temperature in another specific embodiment of the present invention;

[0045] Figure 6 This is a schematic diagram of the structure of an air source heat pump system control device in a specific embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of the structure of an air source heat pump system control device in a specific embodiment of the present invention. Detailed Implementation

[0047] The principles and processes of the air source heat pump system control method, equipment, device, and storage medium in the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0048] Air source heat pump systems, as efficient, energy-saving, and environmentally friendly heating and cooling equipment, are widely used in building HVAC systems worldwide. Traditional air source heat pump systems use variable frequency control of the compressor to regulate the supply and return water temperatures to meet the heat load requirements of different terminal devices. However, a common problem with existing systems is that a single control method often struggles to balance response speed and energy efficiency optimization for different terminal application scenarios.

[0049] Typically, air source heat pump compressor frequency control is based on two main methods: outlet water temperature control and return water temperature control. Outlet water temperature control can quickly respond to changes in system load, making it suitable for scenarios with drastic fluctuations in user demand. Return water temperature control, on the other hand, smoothly regulates the supply and return water temperature difference, making it suitable for scenarios with relatively stable loads and better optimizing energy efficiency. However, a single control method often fails to achieve ideal results in complex and ever-changing application scenarios. For example, while outlet water temperature control can respond quickly to load fluctuations, frequent compressor start-ups and shutdowns and high operating frequencies can easily lead to decreased system efficiency and accelerated equipment wear. Conversely, while return water temperature control can maintain good energy efficiency under stable loads, its slower system response when user demand changes drastically can negatively impact user comfort.

[0050] Furthermore, existing air source heat pump control methods lack intelligent judgment of load fluctuations and struggle to switch control modes under different load conditions, resulting in an inability to achieve a balance between response time and energy efficiency. Therefore, there are still technical problems that need to be solved in related technologies.

[0051] Reference Figure 1 This application provides a control method for an air source heat pump system. The control method may include, but is not limited to, steps S101-S103.

[0052] S101. Obtain the supply water temperature, return water temperature, outdoor ambient temperature, indoor temperature where the air source heat pump system is located, and instantaneous change rate of system load of the air source heat pump system.

[0053] S102. Determine the load fluctuation rate based on the supply water temperature, return water temperature, ambient temperature, indoor temperature, and instantaneous change rate.

[0054] S103. Control the air source heat pump system to switch modes according to the load fluctuation rate.

[0055] Understandably, the supply water temperature, return water temperature, outdoor ambient temperature, and indoor temperature of the air source heat pump system can be detected by sensors. The instantaneous rate of change of system load can be calculated using parameters such as the compressor's operating frequency, system pressure change rate, and instantaneous rate of change of return water temperature. The instantaneous rate of change of return water temperature can be calculated using the return water temperature difference of the current cycle and the previous cycle. The system pressure change rate can be calculated using the system pressure of the current cycle and the system pressure of the previous cycle. The operating frequency can be the operating frequency of the current cycle.

[0056] Furthermore, referring to Figure 2 The step of determining the load fluctuation rate based on the supply water temperature, return water temperature, ambient temperature, indoor temperature, and instantaneous change rate can specifically include steps S201-S204.

[0057] S201. Determine the temperature deviation of the system water supply based on the water supply temperature.

[0058] S202. Determine the return water temperature deviation value based on the return water temperature.

[0059] S203. Determine the environmental impact value based on the ambient temperature and indoor temperature.

[0060] S204. Determine the load fluctuation rate based on the temperature deviation, return water temperature deviation, instantaneous change rate, and environmental impact value.

[0061] It is understood that the instantaneous change rate in this embodiment can be calculated from parameters such as the compressor's operating frequency, system pressure change rate, and instantaneous change rate of return water temperature. The instantaneous change rate of return water temperature can be calculated from the return water temperature difference of the current cycle and the return water temperature difference of the previous cycle.

[0062] Furthermore, referring to Figure 3 The step of determining the temperature deviation of the system water supply based on the water supply temperature can specifically include steps S301-S302.

[0063] S301. The difference between the water supply temperature and the set temperature of the air source heat pump is used to obtain the first temperature difference.

[0064] S302. The absolute value of the first temperature difference is taken as the temperature deviation of the system water supply.

[0065] Specifically, the first temperature difference in this embodiment is obtained by the following formula:

[0066] ΔT_o=T1-T2

[0067] Where T1 is the water supply temperature, T2 is the set temperature, and ΔT_o is the first temperature difference.

[0068] Furthermore, referring to Figure 4 The step of determining the deviation value of the return water temperature based on the return water temperature can specifically include steps S401-S402.

[0069] S401. The difference between the return water temperature and the set temperature of the air source heat pump is used to obtain the second temperature difference.

[0070] S402. The absolute value of the second temperature difference is used as the return water temperature deviation value.

[0071] Specifically, the second temperature difference in this embodiment is obtained by the following formula:

[0072] ΔT_r=T3-T2

[0073] Where T3 is the return water temperature, T2 is the set temperature, and ΔT_r is the second temperature difference.

[0074] Furthermore, referring to Figure 5 The step of determining the environmental impact value based on the ambient temperature and indoor temperature can specifically include steps S501-S502.

[0075] S501. Calculate the difference between the ambient temperature and the indoor temperature to obtain the third temperature difference.

[0076] S502. The absolute value of the third temperature difference is taken as the environmental impact value.

[0077] Specifically, the third temperature difference in this embodiment is obtained by the following formula:

[0078] Tx = T_env - T_room

[0079] Where T_env is the return water temperature, T_room is the set temperature, and Tx is the third temperature difference.

[0080] Furthermore, in this embodiment of the application, the step of determining the load fluctuation rate based on the temperature deviation, return water temperature deviation, instantaneous change rate, and environmental impact value specifically includes:

[0081] Input the temperature deviation, return water temperature deviation, instantaneous change rate, and environmental impact value into the first formula to determine the load fluctuation rate. The first formula is:

[0082] L_wave=(∣ΔT_o∣+∣ΔT_r∣+ΔL_sys)÷(T_set+|Tx∣)

[0083] Where L_wave is the load fluctuation rate, |ΔT_o| is the temperature deviation, |ΔT_r| is the return water temperature deviation, ΔL_sys is the instantaneous change rate, |Tx| is the environmental impact value, and T_set is the set temperature of the air source heat pump.

[0084] Furthermore, in this embodiment of the application, the step of controlling the air source heat pump system to switch modes according to the load fluctuation rate may specifically include step S601 or step S602.

[0085] S601. When the load fluctuation rate is greater than the first preset threshold, control the air source heat pump system to switch to the outlet water temperature control mode.

[0086] S602. When the load fluctuation rate is less than the second preset threshold and the duration is greater than the third time threshold, control the air source heat pump system to switch to the return water temperature control mode.

[0087] Understandably, the third time threshold can be any time threshold set by the user. Specifically, it can be 15 minutes, 30 minutes, 60 minutes, or other values. Similarly, the first preset threshold can also be any value set by the user. The second preset threshold can also be any value set by the user.

[0088] The specific calculation principle of this application is explained below:

[0089] To achieve the above objectives, this application adopts the following technical solution:

[0090] 1. An air source heat pump system includes at least the following main components: Compressor: Used to compress the refrigerant to achieve a high temperature and high pressure state. Evaporator: Absorbs heat from the ambient air. Condenser: Transfers heat to the water system for heating or cooling via terminal devices. Water pump and circulation system: Used to heat or cool water and deliver it to indoor terminal devices. Sensors: Used to collect parameters such as supply water temperature, return water temperature, ambient temperature, and indoor temperature. Control module: Includes a data acquisition unit, load fluctuation judgment module, and switching control module, used to determine the system's load status and intelligently switch control modes. Terminal devices: Mainly include three types of terminal devices: underfloor heating, radiators, and fan coil units, each suitable for different application scenarios.

[0091] 2. Data Acquisition and Load Fluctuation Assessment:

[0092] Air source heat pump systems collect relevant data in real time through multiple sensors to determine the current load status of the system. The main parameters monitored include:

[0093] T_o (outlet water temperature): The current water supply temperature of the system.

[0094] T_r (Return Water Temperature): The current return water temperature of the system.

[0095] T_set(set temperature): The target temperature set by the user.

[0096] L_sys (System Load Status): Real-time load calculated using parameters such as pressure and flow rate within the system.

[0097] T_env(ambient temperature): The current outdoor ambient temperature.

[0098] T_room (Indoor Temperature): The current actual indoor temperature.

[0099] Using the above parameters, the system can monitor in real time information such as the difference between supply and return water temperatures, changes in ambient temperature, and changes in indoor load.

[0100] 3. Calculation of load fluctuation rate:

[0101] To quantify system load fluctuations, this application presents a formula for calculating load fluctuation rate. This formula comprehensively considers the difference between the system outlet and return water temperatures, the instantaneous rate of change of the system load, and the impact of the external environment on the load.

[0102] The formula for calculating load volatility L_wave is as follows:

[0103] L_wave=(∣ΔT_o∣+∣ΔT_r∣+ΔL_sys)÷(T_set+∣T_env-T_room∣)

[0104] Wherein, |ΔT_o| represents the absolute difference between the outlet water temperature and the set temperature, reflecting the temperature deviation of the system's water supply; |ΔT_r| represents the absolute difference between the return water temperature and the set temperature, reflecting the deviation of the return water temperature from the set target; ΔL_sys represents the instantaneous rate of change of the system load, usually calculated from parameters such as the compressor's operating frequency and the system pressure change rate; the difference between T_env and T_room represents the impact of the external environment on the system load, reflecting the change in the system's heating or cooling demand due to changes in external temperature. The L_wave value calculated by the above formula can quantify the system's load fluctuation. When L_wave exceeds a predetermined threshold, the system is considered to be in a high load fluctuation state, and vice versa.

[0105] 4. Setting the load fluctuation threshold:

[0106] To distinguish between the high-load fluctuation and low-load fluctuation states of the system, this application designs two thresholds, L_thresh_high and L_thresh_low. L_thresh_high is the high-load fluctuation threshold. When L_wave is greater than L_thresh_high, the system load fluctuates greatly, and at this time the system will switch to the outlet water temperature control mode. L_thresh_low is the low-load fluctuation threshold. When L_wave is less than L_thresh_low and the duration exceeds the set value (such as 30 minutes), the system will switch to the return water temperature control mode.

[0107] The settings of the high-load fluctuation threshold and the low-load fluctuation threshold can be adjusted according to the actual application scenarios and requirements of the system. For example, in a fan coil system with large load fluctuations, a relatively low high-load threshold may need to be set to respond to load changes more quickly; while in a floor heating system, since its load is relatively stable, the threshold can be set higher.

[0108] 5. Automatic switching of control modes:

[0109] Based on the intelligent judgment of the load volatility, this application designs a set of logic for automatically switching control modes. The control logic is as follows:

[0110] Initial system load detection: When the system starts up, the control module calculates the current load volatility L_wave based on the real-time monitored temperature and load parameters, and compares it with the high-load fluctuation threshold L_thresh_high.

[0111] If L_wave > L_thresh_high, the system considers that the load fluctuates greatly. At this time, the system will preferentially switch to the outlet water temperature control mode, and the compressor frequency will increase rapidly to ensure a quick response to user needs.

[0112] If L_wave < L_thresh_high and the duration exceeds the set value, the system will switch to the return water temperature control mode to operate stably and optimize energy efficiency.

[0113] Response to load changes: When the system is running and the real-time calculated L_wave changes, the control module will automatically judge whether the system needs to switch the control mode.

[0114] When the system is in the return water temperature control mode and the load volatility suddenly rises, that is, L_wave > L_thresh_high, the system will immediately switch to the outlet water temperature control mode to ensure a quick response of the system when the user needs change.

[0115] When the system is in outlet water temperature control mode and the load fluctuation rate gradually decreases to below L_thresh_low, the system will slowly switch to return water temperature control mode to maintain the system's efficient operation.

[0116] 6. Smooth transition processing:

[0117] To avoid frequent start-stops or operational instability caused by frequent system switching during control mode switching, this application also designs a smooth switching mechanism. During the switching process, the compressor frequency is gradually adjusted to avoid system instability and efficiency reduction caused by sudden frequency changes.

[0118] 7. Handling exceptions during handover:

[0119] If the load fluctuation rate changes frequently in a short period of time, the system will prioritize maintaining the current control mode and notify maintenance personnel to conduct an inspection through an alarm mechanism.

[0120] Furthermore, the control method of this application can also be used for the control of underfloor heating systems, radiator systems, and fan coil systems.

[0121] In underfloor heating systems, the heating load is relatively stable, and the system does not need to frequently respond to changes in external temperature. Therefore, return water temperature control is suitable. Through return water temperature control, the underfloor heating system can maintain efficient and stable operation, allowing users to enjoy comfortable indoor temperatures while minimizing energy consumption. When the system detects a sharp drop in outdoor temperature or a sudden increase in indoor heat load, it will automatically switch to outlet water temperature control mode to ensure that the heating effect is not affected.

[0122] The heat load fluctuation of radiator systems is more significant compared to underfloor heating, especially when ambient temperature changes drastically, leading to fluctuations in user heating demand. In this application scenario, this application intelligently detects load fluctuations and can promptly switch to outlet water temperature control mode when indoor temperature changes rapidly to cope with drastic heat load changes. When the indoor temperature gradually stabilizes, the system switches back to return water temperature control mode to ensure efficient operation.

[0123] Fan coil systems are characterized by rapid response, and user demands change frequently, making outlet water temperature control mode suitable for meeting instantaneous needs. Using the control method described in this application, the fan coil system can quickly switch to outlet water temperature control mode when the load fluctuates significantly, ensuring the compressor operates at a higher frequency to rapidly provide cooling / heating. When the load gradually stabilizes, the system switches to return water temperature control mode, reducing frequent compressor starts and stops and improving overall energy efficiency.

[0124] In summary, this application has the following beneficial effects:

[0125] 1. This application can improve response speed. Through real-time load fluctuation detection, this invention can quickly switch to the outlet water temperature control mode when the system load changes rapidly, thus improving the user experience.

[0126] 2. This application can optimize system energy efficiency. When the system load tends to stabilize, this application can switch to the return water temperature control mode, avoiding frequent compressor start-stop, extending equipment life and significantly reducing energy consumption.

[0127] 3. This application can be adapted to a variety of terminal devices. It can flexibly adjust the control strategy according to the characteristics of the terminal devices (such as underfloor heating, radiators, and fan coil units) to ensure that the system maintains optimal performance in different application scenarios.

[0128] 4. This application utilizes an intelligent load fluctuation judgment and control algorithm to automatically switch between return water temperature control and outlet water temperature control in an air source heat pump system. This adapts to the needs of different terminal devices, significantly improving system response speed and energy efficiency, making it suitable for widespread application in underfloor heating, radiator, and fan coil systems. In practical applications, this application, through real-time monitoring of load fluctuation rate and flexible application of switching strategies, can effectively balance system response speed and energy efficiency, greatly enhancing the overall performance of the air source heat pump system.

[0129] In addition, with Figure 1 Corresponding to the method, refer to Figure 6 The embodiments of this application also provide an air source heat pump system control device. The device may include a first processing unit 1001, a second processing unit 1002, and a third processing unit 1003.

[0130] The first processing unit 1001 is used to acquire the supply water temperature, return water temperature, outdoor ambient temperature, indoor temperature where the air source heat pump system is located, and instantaneous change rate of system load of the air source heat pump system.

[0131] The second processing unit 1002 is used to determine the load fluctuation rate based on the supply water temperature, return water temperature, ambient temperature, indoor temperature and instantaneous change rate.

[0132] The third processing unit 1003 is used to control the air source heat pump system to switch modes according to the load fluctuation rate.

[0133] It should be noted that the acquisition unit can be any integrated circuit unit or microprocessor unit obtained by integrating a chip with processing functions and its peripheral circuits using existing integration technology. Similarly, the first processing unit and the second processing unit can also be any integrated circuit module or microprocessor module obtained by integrating a chip with processing functions and its peripheral circuits using existing integration technology. Furthermore, the first processing unit and the second processing unit may include one or more memories. These memories can be used to store the specific algorithms described in this application.

[0134] In some embodiments of this application, the first processing unit 1001 and the second processing unit 1002 may be located in the same gateway or a device with a processor. The specific device connection methods and device configurations of the first processing unit 1001, the second processing unit 1002, and the second processing unit 1002 and the third processing unit 1003 are not limited.

[0135] It should be noted that the contents of the above-described air source heat pump system control method embodiments are all applicable to this air source heat pump system control device embodiment. The specific functions implemented by this air source heat pump system control device embodiment are the same as those of the above-described air source heat pump system control method embodiments, and the beneficial effects achieved are also the same as those achieved by the above-described air source heat pump system control method embodiments.

[0136] Corresponding to the method, this application also provides an air source heat pump system control device, the specific structure of which can be referred to Figure 7 ,include:

[0137] At least one processor 1011.

[0138] At least one memory 1012 is used to store at least one program.

[0139] When at least one program is executed by at least one processor, an air source heat pump system control method is implemented by at least one processor.

[0140] The content of the above method embodiments is applicable to the device embodiments. The specific functions implemented by the device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0141] and Figure 1 Corresponding to the method described above, embodiments of this application also provide a computer-readable storage medium storing processor-executable instructions, which, when executed by a processor, are used to execute an air-source heat pump system control method.

[0142] The contents of the above-described air source heat pump system control method embodiments are all applicable to this storage medium embodiment. The specific functions implemented by this storage medium embodiment are the same as those of the above-described air source heat pump system control method embodiments, and the beneficial effects achieved are also the same as those achieved by the above-described air source heat pump system control method embodiments.

[0143] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order shown in the operation diagrams. For example, depending on the functions / operations involved, two consecutively shown blocks may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order. Furthermore, the embodiments presented and described in the flowcharts of this application are provided by way of example to provide a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated, wherein the order of various operations may be changed and sub-operations described as part of a larger operation may be executed independently.

[0144] Furthermore, although this application is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and / or features may be integrated into a single physical device and / or software module, or one or more functions and / or features may be implemented in a separate physical device or software module. It is also understood that a detailed discussion of the actual implementation of each module is unnecessary for understanding this application. Rather, given the properties, functions, and internal relationships of the various functional modules in the apparatus disclosed herein, the actual implementation of the module will be understood within the scope of conventional technology for an engineer. Therefore, those skilled in the art can implement the application set forth in the claims using ordinary techniques without excessive experimentation. It is also understood that the specific concepts disclosed are merely illustrative and not intended to limit the scope of this application, which is determined by the full scope of the appended claims and their equivalents.

[0145] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several programs to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0146] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequential list of executable programs for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, a program execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can retrieve and execute a program from or in conjunction with such a program execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can mean any means that can contain, store, communicate, propagate, or transmit a program for use by or in conjunction with a program execution system, apparatus, or device.

[0147] More specific examples of computer-readable media (a non-exhaustive list) include: electrical connections (electronic devices) having one or more wires, portable computer disk drives (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0148] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable program execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0149] In the foregoing description of this specification, the references to terms such as "one embodiment," "another embodiment," or "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0150] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

[0151] The above is a detailed description of the preferred embodiments of this application, but this application is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A control method for an air source heat pump system, characterized in that, Includes the following steps: The system obtains the supply water temperature, return water temperature, outdoor ambient temperature, indoor temperature where the air source heat pump system is located, and instantaneous change rate of system load for the air source heat pump system. The load fluctuation rate is determined based on the supply water temperature, the return water temperature, the ambient temperature, the indoor temperature, and the instantaneous change rate. The air source heat pump system is controlled to switch modes based on the load fluctuation rate.

2. The control method for an air source heat pump system according to claim 1, characterized in that, The determination of load fluctuation rate based on the supply water temperature, the return water temperature, the ambient temperature, the indoor temperature, and the instantaneous rate of change specifically includes: Determine the temperature deviation of the system water supply based on the stated water supply temperature; Determine the return water temperature deviation value based on the return water temperature; The environmental impact value is determined based on the ambient temperature and the indoor temperature. The load fluctuation rate is determined based on the temperature deviation, the return water temperature deviation, the instantaneous change rate, and the environmental impact value.

3. The air source heat pump system control method according to claim 2, characterized in that, The determination of the system water supply temperature deviation based on the water supply temperature specifically includes: The first temperature difference is obtained by taking the difference between the water supply temperature and the set temperature of the air source heat pump; The absolute value of the first temperature difference is taken as the temperature deviation of the water supplied by the system.

4. The air source heat pump system control method according to claim 2, characterized in that, The step of determining the return water temperature deviation based on the return water temperature specifically includes: The second temperature difference is obtained by taking the difference between the return water temperature and the set temperature of the air source heat pump; The absolute value of the second temperature difference is taken as the return water temperature deviation value.

5. The control method for an air source heat pump system according to claim 2, characterized in that, The determination of the environmental impact value based on the ambient temperature and the indoor temperature specifically includes: The difference between the ambient temperature and the indoor temperature is used to obtain a third temperature difference; The absolute value of the third temperature difference is taken as the environmental impact value.

6. The control method for an air source heat pump system according to claim 2, characterized in that, The determination of load fluctuation rate based on the temperature deviation, the return water temperature deviation, the instantaneous change rate, and the environmental impact value specifically includes: The temperature deviation, the return water temperature deviation, the instantaneous rate of change, and the environmental impact value are input into the first formula to determine the load fluctuation rate; wherein the first formula is: L_wave=(∣ΔT_o∣+∣ΔT_r∣+ΔL_sys)÷(T_set+|Tx∣) Where L_wave is the load fluctuation rate, |ΔT_o| is the temperature deviation, |ΔT_r| is the return water temperature deviation, ΔL_sys is the instantaneous change rate, |Tx| is the environmental impact value, and T_set is the set temperature of the air source heat pump.

7. The control method for an air source heat pump system according to claim 1, characterized in that, The step of controlling the air source heat pump system to switch modes based on the load fluctuation rate specifically includes: When the load fluctuation rate is greater than the first preset threshold, the air source heat pump system is controlled to switch to the outlet water temperature control mode. When the load fluctuation rate is less than the second preset threshold and the duration is greater than the third time threshold, the air source heat pump system is controlled to switch to the return water temperature control mode.

8. A control device for an air source heat pump system, characterized in that, include: The first processing unit is used to obtain the supply water temperature, return water temperature, outdoor ambient temperature, indoor temperature where the air source heat pump system is located, and instantaneous change rate of system load of the air source heat pump system. The second processing unit is used to determine the load fluctuation rate based on the supply water temperature, the return water temperature, the ambient temperature, the indoor temperature, and the instantaneous change rate. The third processing unit is used to control the air source heat pump system to switch modes according to the load fluctuation rate.

9. A control device for an air source heat pump system, characterized in that... include: At least one processor; At least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the air source heat pump system control method as described in any one of claims 1-7.

10. A computer-readable storage medium storing processor-executable instructions, characterized in that, The processor-executable instructions, when executed by the processor, are used to perform the air source heat pump system control method as described in any one of claims 1-7.

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