A heat pump unit operation control method, device, equipment and storage medium

Abstract

The present invention discloses a heat pump unit operation control method, device, equipment and storage medium, wherein the heat pump unit includes a heat pump host and a plurality of heat pump slaves; the method includes: obtaining the current temperature and a preset loading curve of the heat pump host, wherein the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio; determining the loading quantity of the heat pump slave according to the current temperature and the preset loading curve; and controlling the heat pump slave corresponding to the loading quantity to work. The loading quantity of the heat pump slave is dynamically adjusted according to the actual temperature and the preset loading curve, and overload or underload is avoided through a reasonable heat pump slave loading strategy, thereby improving the energy saving, reliability and stability of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pumps, and in particular to a heat pump unit operation control method, device, equipment and storage medium. Background Art

[0002] As heat pump technology becomes increasingly popular in the market, more and more projects are using multiple heat pumps in parallel to provide heating and cooling for buildings. However, in traditional systems with multiple heat pumps in parallel, the loading and unloading strategy usually adopts loading one by one or simply determines the number of units to be loaded based on the ambient temperature, which raises several challenges.

[0003] If the speed of loading one unit at a time is not fast enough, the required target load will not be reached quickly, making it difficult for the system water temperature to reach the preset temperature in time, affecting the user experience. On the contrary, if the loading speed is too fast, it may cause drastic fluctuations in the system water temperature, increasing the risk of overload shutdown, and further affecting the stability and reliability of the system. In addition, air source heat pumps are usually controlled by a single-chip microcomputer. The computing power of this built-in hardware is limited and can only handle some basic control logic. Although online methods of calculating the number of units loaded, such as neural networks or calculations combined with weather big data, can theoretically provide more precise control, they require the unit to have networking capabilities, which undoubtedly increases costs and implementation difficulties. Summary of the invention

[0004] The embodiments of the present application disclose a heat pump unit operation control method, device, equipment and storage medium, which dynamically adjust the loading quantity of the heat pump slave according to the actual temperature and operating parameters, avoid overload or underload through a reasonable heat pump slave loading strategy, and improve the reliability and stability of the system.

[0005] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] According to a first aspect of an embodiment of the present application, a heat pump unit operation control method is provided, which is applied to a heat pump unit, wherein the heat pump unit includes a heat pump host and a plurality of heat pump slaves; the method includes:

[0007] Obtaining the current temperature and preset loading curve of the heat pump host, wherein the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio;

[0008] Determining the loading quantity of the heat pump slave according to the current temperature and the preset loading curve;

[0009] The heat pump slaves corresponding to the loading quantity are controlled to work.

[0010] Optionally, determining the loading quantity of the heat pump slave according to the current temperature and the preset loading curve includes:

[0011] Determining a target loading ratio according to the current temperature and the preset loading curve;

[0012] The loading quantity of the heat pump slaves is determined according to the current number of candidate units of the heat pump slaves and the target loading ratio.

[0013] Optionally, determining a target loading ratio according to the current temperature and the preset loading curve includes:

[0014] Determining an initial loading ratio according to the current ambient temperature and the preset loading curve;

[0015] The initial loading ratio is corrected according to the target outlet water temperature and the current outlet water temperature to obtain the target loading ratio.

[0016] Optionally, the correcting the initial loading ratio according to the target outlet water temperature and the current outlet water temperature to obtain the target loading ratio includes:

[0017] Determining a water temperature correction coefficient according to a difference between the target water outlet temperature and the current water outlet temperature;

[0018] The product of the initial loading ratio and the water temperature correction coefficient is calculated to obtain the target loading ratio.

[0019] Optionally, the preset loading curve includes a maximum loading ratio of the heat pump unit, a minimum loading ratio of the heat pump unit, a preset upper limit of the ambient temperature, and a preset lower limit of the ambient temperature. Determining the initial loading ratio according to the current ambient temperature and the preset loading curve includes:

[0020] Calculate the difference between the current ambient temperature and the lower limit of the preset ambient temperature as the first difference;

[0021] Calculate a difference between the lower limit of the preset ambient temperature and the upper limit of the preset ambient temperature as a second difference;

[0022] Calculate the difference between the maximum load ratio of the heat pump unit and the minimum load ratio of the heat pump unit as the third difference;

[0023] Calculating a ratio between the first difference and the second difference;

[0024] The initial loading ratio is obtained by calculating the sum of the product of the ratio value and the third difference and the minimum loading ratio of the heat pump unit.

[0025] Optionally, controlling the heat pump slave corresponding to the loading quantity to operate includes:

[0026] Obtaining the current ambient temperature of each of the heat pump slaves;

[0027] According to the order of the current ambient temperature of each of the heat pump slaves from high to low, the loaded number of heat pump slaves are selected to operate.

[0028] Optionally, controlling the heat pump slave corresponding to the loading quantity to operate includes:

[0029] Obtaining the position and current ambient temperature of each of the heat pump slaves;

[0030] Determine the startup sequence and quantity according to the position of each of the heat pump slaves and the current ambient temperature;

[0031] The heat pump slaves are started step by step according to the start-up sequence and quantity.

[0032] Optionally, obtaining a preset loading curve includes:

[0033] Display the user input interface;

[0034] The preset loading curve is determined according to the received maximum loading ratio of the heat pump unit, the minimum loading ratio of the heat pump unit, the preset upper limit of the ambient temperature and the preset lower limit of the ambient temperature.

[0035] According to a second aspect of an embodiment of the present application, a heat pump unit operation control device is provided, which is applied to a heat pump unit, wherein the heat pump unit includes a heat pump host and a plurality of heat pump slaves; the device includes:

[0036] A parameter acquisition module, used to acquire the current temperature and a preset loading curve of the heat pump host, wherein the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio;

[0037] A loading quantity module, used to determine the loading quantity of the heat pump slave according to the current temperature and the preset loading curve;

[0038] The control module is used to control the operation of the heat pump slaves corresponding to the loading quantity.

[0039] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect above.

[0040] According to a fourth aspect of an embodiment of the present application, a heat pump unit system is provided, comprising a heat pump host and a plurality of heat pump slaves, and also comprising the device described in the second aspect or the electronic device described in the third aspect.

[0041] According to a fifth aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which computer-readable instructions are stored. The computer-readable instructions can be executed by a processor to implement the method described in the first aspect above.

[0042] In summary, the embodiments of the present application provide a method, device, equipment and storage medium for controlling the operation of a heat pump unit, wherein the heat pump unit includes a heat pump host and a plurality of heat pump slaves; by obtaining the current temperature and a preset loading curve of the heat pump host, the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio; according to the current temperature and the preset loading curve, the loading quantity of the heat pump slave is determined; and the heat pump slave corresponding to the loading quantity is controlled to work. The loading quantity of the heat pump slave is dynamically adjusted according to the actual temperature and the preset loading curve, and overload or underload is avoided through a reasonable heat pump slave loading strategy, thereby improving the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0044] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0045] Figure 1 A schematic flow chart of a heat pump unit operation control method provided in an embodiment of the present application;

[0046] Figure 2 A schematic diagram of calculating the initial loading ratio provided in an embodiment of the present application;

[0047] Figure 3 A schematic diagram of the system structure provided in the embodiment of the present application;

[0048] Figure 4 A structural diagram of the heat pump unit operation control system provided in the embodiment of the present application;

[0049] Figure 5 A structural diagram of an electronic device provided in an embodiment of the present application is shown;

[0050] Figure 6 A diagram showing a computer-readable storage medium provided by an embodiment of the present application.

[0051] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] Figure 1 A heat pump unit operation control method provided in an embodiment of the present application is shown, which is applied to a heat pump unit, wherein the heat pump unit includes a heat pump host and a plurality of heat pump slaves; the method includes:

[0058] Step 101: obtaining the current temperature and preset loading curve of the heat pump host, wherein the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio;

[0059] Step 102: Determine the loading quantity of the heat pump slave according to the current temperature and the preset loading curve;

[0060] Step 103: Control the heat pump slaves corresponding to the loading quantity to operate.

[0061] In a possible implementation manner, in step 102, determining the loading quantity of the heat pump slave according to the current temperature and the preset loading curve includes:

[0062] A target loading ratio is determined according to the current temperature and the preset loading curve; and a loading quantity of the heat pump slaves is determined according to the current candidate number of the heat pump slaves and the target loading ratio.

[0063] The preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio, and can be adjusted by the user according to the actual situation. The heat pump unit operation control method can reduce energy consumption by dynamically adjusting the loading quantity of the heat pump slave according to the ambient temperature and the outlet water temperature, and can use energy more efficiently, especially when the ambient temperature changes greatly. By avoiding overloading or frequent starting and stopping of the heat pump slave, the wear of the equipment can be reduced and the service life of the heat pump unit can be extended.

[0064] Suppose a heat pump system serves a large shopping mall, and the temperature demand inside the mall changes with the seasons and weather. In winter, the ambient temperature is low, and the heat pump system needs to provide more heat to maintain the indoor temperature. The system first obtains the current ambient temperature (for example, the outdoor temperature is -5 degrees Celsius) and the outlet water temperature (for example, the outlet water temperature requirement is 40 degrees Celsius). Based on the preset loading curve, the system determines that at the current ambient temperature of -5 degrees Celsius, a loading ratio of 60% is required to meet the outlet water temperature requirement of 40 degrees Celsius. Assuming that the mall has 10 heat pump slaves, the system calculates that 6 heat pump slaves (60% of the 10) need to be loaded. The system controls these 6 heat pump slaves to start working to provide the required heat. As the outdoor temperature rises, the system dynamically adjusts the loading ratio and the number of heat pump slaves according to the new ambient temperature and outlet water temperature requirements to ensure energy efficiency and comfort. This intelligent control method enables the heat pump system to adapt to changing environmental conditions while maintaining high efficiency and user satisfaction.

[0065] In a possible implementation, determining the target loading ratio based on the current temperature and the preset loading curve includes: determining an initial loading ratio based on the current ambient temperature and the preset loading curve; and correcting the initial loading ratio based on the target water outlet temperature and the current water outlet temperature to obtain the target loading ratio.

[0066] In a possible implementation, the initial loading ratio is corrected according to the target water outlet temperature and the current water outlet temperature to obtain the target loading ratio, including: determining a water temperature correction coefficient according to the difference between the target water outlet temperature and the current water outlet temperature; and calculating the product of the initial loading ratio and the water temperature correction coefficient to obtain the target loading ratio.

[0067] In a possible implementation manner, the preset loading curve includes a maximum loading ratio of the heat pump unit, a minimum loading ratio of the heat pump unit, a preset upper limit of the ambient temperature, and a preset lower limit of the ambient temperature. Determining the initial loading ratio according to the current ambient temperature and the preset loading curve includes:

[0068] Calculate the difference between the current ambient temperature and the preset ambient temperature lower limit as the first difference; calculate the difference between the preset ambient temperature lower limit and the preset ambient temperature upper limit as the second difference; calculate the difference between the maximum load ratio of the heat pump unit and the minimum load ratio of the heat pump unit as the third difference; calculate the ratio between the first difference and the second difference; calculate the product of the ratio and the third difference and the sum of the minimum load ratio of the heat pump unit to obtain the initial load ratio.

[0069] According to the current ambient temperature and the preset loading curve, an initial loading ratio is determined as the basis for the operation of the heat pump slave. The initial loading ratio can be further corrected according to the difference between the target outlet water temperature and the current outlet water temperature to ensure that the outlet water temperature meets the target set by the user. By accurately controlling the loading ratio of the heat pump slave, it can adapt to different ambient temperatures and outlet water temperature requirements.

[0070] Assume that the heat pump system serves an office building, the target outlet water temperature of the office building is 45 degrees Celsius, the current outlet water temperature is 40 degrees Celsius, and the current ambient temperature is 5 degrees Celsius. The preset loading curve defines the minimum and maximum loading ratios of the heat pump unit at different ambient temperatures, as well as the upper and lower limits of the ambient temperature. Calculate the initial loading ratio based on the current ambient temperature of 5 degrees Celsius and the preset loading curve. Assume that the preset ambient temperature lower limit is -1 degrees Celsius and the upper limit is 30 degrees Celsius, the minimum loading ratio of the heat pump unit is 20%, and the maximum loading ratio is 80%. The first difference is calculated as 5 degrees Celsius - (-10 degrees Celsius) = 15 degrees Celsius, the second difference is 30 degrees Celsius - (-10 degrees Celsius) = 40 degrees Celsius, and the third difference is 80% - 20% = 60%. The ratio is 15 degrees Celsius / 40 degrees Celsius = 0.375, and the initial loading ratio is 0.375 * 60% + 20% = 35%. The water temperature correction coefficient is determined based on the difference between the target water outlet temperature of 45 degrees Celsius and the current water outlet temperature of 40 degrees Celsius. Assuming that a 5% load ratio needs to be added for every 1 degree Celsius temperature difference, the correction coefficient is (45 degrees Celsius - 40 degrees Celsius) * 5% = 25%. The target load ratio is calculated, which is the product of the initial load ratio of 35% and the water temperature correction coefficient of 25%, and the target load ratio is 35% * 1.25 = 43.75%. Based on the target load ratio of 43.75%, the system will adjust the number of heat pump slaves in operation (the number of operations needs to be rounded) to ensure that the water outlet temperature can reach the target value while maintaining energy efficiency and system stability. This approach enables the heat pump system to respond to temperature changes more intelligently, improving overall performance and user satisfaction.

[0071] In a possible implementation, in step 103, controlling the operation of the heat pump slaves corresponding to the loaded number includes: acquiring the current ambient temperature of each of the heat pump slaves; and selecting the loaded number of heat pump slaves to operate in order of the current ambient temperature of each of the heat pump slaves from high to low.

[0072] Get the current ambient temperature of each heat pump slave to understand the operating conditions of each slave. Sort the heat pump slaves from high to low according to their ambient temperatures, and start the slaves with higher temperatures first. By starting the heat pump slaves with higher ambient temperatures first, the energy consumption required for the system to reach the target water outlet temperature is reduced.

[0073] Assume that the heat pump system serves a large factory with multiple zones, each with a heat pump slave. On a cold winter morning, the factory needs to heat up quickly to start production. The system first obtains the current ambient temperature of each heat pump slave. Assume that there are three heat pump slaves, and the ambient temperatures are: Slave A is 10 degrees Celsius, Slave B is 8 degrees Celsius, and Slave C is 12 degrees Celsius. The system sorts the heat pump slaves from high to low according to the ambient temperature, and the sorting result is: Slave C (12 degrees Celsius) > Slave A (10 degrees Celsius) > Slave B (8 degrees Celsius). According to the target load ratio, 60% of the heat pump slaves need to be started. In this example, if there are 5 heat pump slaves, then 3 need to be started. The system will give priority to starting the three slaves with the highest ambient temperature, that is, one of Slave C, Slave A, and Slave B. In this way, the system ensures that the required water outlet temperature is reached in the shortest possible time, while maximizing energy efficiency, reducing energy consumption, and optimizing the operation and maintenance of the heat pump slaves.

[0074] In a possible implementation, in step 103, controlling the operation of the heat pump slaves corresponding to the loading quantity includes: obtaining the position and current ambient temperature of each of the heat pump slaves; determining a startup sequence and quantity according to the position and current ambient temperature of each of the heat pump slaves; and gradually starting the heat pump slaves according to the startup sequence and quantity.

[0075] Based on the location of the heat pump slaves, give priority to starting those slaves that can heat the target area faster. Considering the impact of ambient temperature on the efficiency of the heat pump slaves, give priority to starting those slaves that are more efficient at the current ambient temperature, which can speed up the heating speed of the entire system. By balancing the number of starts and running time of each heat pump slave, the wear of the equipment is reduced and the service life of the heat pump slave is extended. Through intelligent control, the risk of failure caused by equipment overload or frequent start and stop is reduced, and the reliability of the entire system is improved.

[0076] Assume that the heat pump system serves a large office building with multiple areas, each with a heat pump slave. On a cold morning in winter, the office building needs to heat up quickly to start working. The system first obtains the location and current ambient temperature of each heat pump slave. Assume that there are three heat pump slaves, with the locations and ambient temperatures being: slave A (front desk area, 10 degrees Celsius), slave B (conference room area, 8 degrees Celsius), and slave C (office area, 12 degrees Celsius). Determine the startup order and quantity based on the location and ambient temperature of the heat pump slaves. Considering that the front desk area is the entrance to the office building and needs to be heated first, and the ambient temperature of the office area is already high, slaves A and C have a higher priority. The system decides to start slaves A and C first, and then start slave B as needed. Start the heat pump slaves step by step according to the determined startup order and quantity. Start slaves A and C first, and then start slave B if more heat is needed. In this way, the system can ensure that the required outlet water temperature is reached in the shortest possible time, while maximizing energy efficiency, reducing energy consumption, and optimizing the operation and maintenance of the heat pump slaves. This approach allows the heat pump system to respond more intelligently to temperature changes and location needs.

[0077] In a possible implementation, in step 101, obtaining a preset loading curve includes: displaying a user input interface; and determining the preset loading curve based on the received maximum loading ratio of the heat pump unit, the minimum loading ratio of the heat pump unit, the preset upper ambient temperature limit, and the preset lower ambient temperature limit.

[0078] Allows users to customize preset loading curves through the input interface to adapt to different usage scenarios and needs. Preset loading curves include straight lines and curved curves to provide more flexible control strategies.

[0079] Assume that a heat pump system serves a residential community, and there are multiple heat pump slaves in the community serving different residential units. The system displays a user input interface, allowing the user to input the maximum load ratio, minimum load ratio, and preset upper and lower limits of the ambient temperature of the heat pump unit according to seasonal changes, weather forecasts, or personal preferences. Users can set different preset load curves according to different needs in winter and summer. The preset load curve is determined based on the data entered by the user. For example, the user may set that when the ambient temperature is below 0 degrees Celsius in winter, the load ratio of the heat pump unit gradually increases until it reaches the maximum load ratio; while in summer, when the ambient temperature is above 30 degrees Celsius, the load ratio gradually decreases to reduce energy consumption.

[0080] The following is a detailed description of the intelligent control process of the heat pump system, including:

[0081] Phase 1: Determine the initial loading ratio based on the current ambient temperature and the preset loading curve.

[0082] Step 1: The user customizes the preset load curve through the input interface. The preset load curve includes a straight line and a curved curve. In this embodiment, the user sets the minimum load ratio (Ratio_min), the maximum load ratio (Ratio_max), the lower limit of the ambient temperature (T4_min), and the upper limit of the ambient temperature (T4_max) through the wire controller. These set values ​​define the ambient temperature range for the normal operation of the heat pump system. Beyond this range, the system may need to take special measures, such as starting additional heating or cooling equipment, or adjusting the working mode of the heat pump to ensure system efficiency and safety.

[0083] Step 2: Turn on the wired controller, and the system starts to collect the current ambient temperature (T4), target water outlet temperature (Ts), and current water inlet temperature (Tw).

[0084] Step 3: The system calculates the initial loading ratio using interpolation method based on the current ambient temperature (T4) and the preset upper and lower limits of the ambient temperature (T4_min, T4_max). Figure 2 A schematic diagram of calculating the initial loading ratio provided in an embodiment of the present application is shown.

[0085] The embodiment of the present application uses an interpolation method to calculate the initial loading ratio according to the current ambient temperature and the preset upper and lower limit ambient temperatures. The formula is as follows:

[0086]

[0087] in, is the difference between the current water temperature and the target water temperature, and N is a preset constant representing the initial loading temperature difference.

[0088] In one possible implementation, alternative implementations of recording the ratio may include using different calculation methods (such as quadratic interpolation) or calculating the unit load ratio through other similar calculation methods. The system can also integrate multiple calculation models, such as fuzzy logic control, genetic algorithms, or machine learning models to adapt to different environmental conditions and operating requirements. The system can automatically adjust and optimize the calculation model based on historical data and real-time feedback to improve the calculation accuracy and response speed of the load ratio.

[0089] In a possible implementation, the unit can also be built-in with a fixed proportional coefficient and upper and lower temperature limits to automatically judge loading and unloading without preset user interaction settings. The system can automatically learn and adjust the fixed proportional coefficient and temperature threshold based on long-term operation data to adapt to different environments and load changes.

[0090] The second stage: Determine the water temperature correction coefficient based on the difference between the target water outlet temperature and the current water outlet temperature.

[0091] The system calculates the water temperature correction coefficient based on the difference (ΔTw) between the set target water temperature (Ts) and the current water temperature (Tw), as well as a preset constant (N). The specific formula is as follows:

[0092]

[0093] in, is the difference between the current water temperature and the target water temperature, and N is a preset constant representing the initial loading temperature difference.

[0094] In a possible implementation, the water temperature correction coefficient of the current unit can also be determined by other water temperature sensors such as the system unit outlet water and inlet water temperature. The system can monitor the water temperature changes at each point in real time and dynamically adjust the water temperature correction coefficient to maintain the stability of the outlet water temperature.

[0095] The third stage: Calculate the product of the initial loading ratio and the water temperature correction coefficient to obtain the target loading ratio.

[0096] According to the difference between the target water outlet temperature and the current water outlet temperature, the initial loading ratio is corrected to ensure that the water outlet temperature meets the target set by the user.

[0097] Phase 4: Determine the number of units that need to be turned on based on the calculated target load ratio and the current number of slave units.

[0098] The system turns on the corresponding number of heat pump slaves according to the calculation results to meet the current cooling and heating needs. The specific start-up plans include but are not limited to the following two:

[0099] Solution 1: Obtain the current ambient temperature of each heat pump slave; select the heat pump slaves with the loading quantity to work according to the current ambient temperature of each heat pump slave from high to low.

[0100] Get the current ambient temperature of each heat pump slave to understand the operating conditions of each slave. Sort the heat pump slaves from high to low according to their ambient temperatures, and start the slaves with higher temperatures first. By starting the heat pump slaves with higher ambient temperatures first, the energy consumption required for the system to reach the target water outlet temperature is reduced.

[0101] Solution 2: Obtain the position and current ambient temperature of each heat pump slave; determine the startup sequence and quantity according to the position and current ambient temperature of each heat pump slave; and gradually start the heat pump slaves according to the startup sequence and quantity.

[0102] Based on the location of the heat pump slaves, give priority to starting those slaves that can heat the target area faster. Considering the impact of ambient temperature on the efficiency of the heat pump slaves, give priority to starting those slaves that are more efficient at the current ambient temperature, which can speed up the heating speed of the entire system. By balancing the number of starts and running time of each heat pump slave, the wear of the equipment is reduced and the service life of the heat pump slave is extended. Through intelligent control, the risk of failure caused by equipment overload or frequent start and stop is reduced, and the reliability of the entire system is improved.

[0103] Users can interact through the user interface to set and adjust the maximum and minimum load ratios and the upper and lower limits of the ambient temperature to better meet the actual needs of users and projects.

[0104] Figure 3 The schematic diagram of the heat pump system structure provided by the embodiment of the present application is shown, showing the connection method between the heat pump host and multiple heat pump slaves. Specifically including: wire controller: the control center of the entire system, responsible for receiving the user's set values, such as the target water temperature, and monitoring and adjusting the operation of the entire heat pump system. Heat pump host: This is the main heat pump device in the system, responsible for providing the main heating or cooling capacity. Ambient temperature sensor T4: used to measure the temperature of the heat pump host. Outlet water temperature sensor Tw: used to measure the temperature of the outlet water of the heat pump system to ensure that the outlet water temperature reaches the target water temperature set by the user. Inlet and outlet: These are the water flow paths in the heat pump system. Inlet water refers to the water entering the heat pump system, and outlet water is the water treated by the heat pump system. Heat pump slave 1, heat pump slave 2, heat pump slave 3... Heat pump slave n: These are slave heat pump devices that work with the host to provide additional heating or cooling capacity. When the host cannot meet the demand alone, these slaves can work in parallel to increase the total output of the system.

[0105] The design of the entire system allows the operation of the master and slave units to be flexibly controlled by the wire controller according to the requirements of ambient temperature and outlet water temperature to achieve efficient and comfortable heating and cooling supply. In this way, the system can maintain efficient operation under different environmental conditions while reducing energy consumption.

[0106] In summary, the embodiment of the present application provides a method for controlling the operation of a heat pump unit, wherein the heat pump unit includes a heat pump host and a plurality of heat pump slaves; by obtaining the current temperature and a preset loading curve of the heat pump host, the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio; according to the current temperature and the preset loading curve, the loading quantity of the heat pump slave is determined; and the heat pump slave corresponding to the loading quantity is controlled to work. The loading quantity of the heat pump slave is dynamically adjusted according to the actual temperature and the preset loading curve, and an overload or underload situation is avoided through a reasonable heat pump slave loading strategy, thereby improving the reliability and stability of the system.

[0107] Based on the same technical concept, the embodiment of the present application also provides a heat pump unit operation control device, such as Figure 4 As shown, it is applied to a heat pump unit, the heat pump unit includes a heat pump host and a plurality of heat pump slaves; the device includes:

[0108] The parameter acquisition module 401 is used to acquire the current temperature and the preset loading curve of the heat pump host, wherein the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio;

[0109] A loading quantity module 402 is used to determine the loading quantity of the heat pump slave according to the current temperature and the preset loading curve;

[0110] The control module 403 is used to control the operation of the heat pump slaves corresponding to the loading quantity.

[0111] The present application also provides an electronic device corresponding to the method provided in the above embodiment. Figure 5 , which shows an electronic device diagram provided by some embodiments of the present application. The electronic device 20 may include: a processor 200, a memory 201, a bus 202 and a communication interface 203, wherein the processor 200, the communication interface 203 and the memory 201 are connected via the bus 202; the memory 201 stores a computer program that can be run on the processor 200, and the processor 200 executes the method provided by any of the aforementioned embodiments of the present application when running the computer program.

[0112] The memory 201 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one physical port (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used.

[0113] The bus 202 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory 201 is used to store programs, and the processor 200 executes the programs after receiving execution instructions. The method disclosed in any implementation of the aforementioned embodiment of the present application may be applied to the processor 200, or implemented by the processor 200.

[0114] The processor 200 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 200. The above processor 200 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a readily available programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor to be executed, or the hardware and software modules in the decoding processor can be executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 201, and the processor 200 reads the information in the memory 201 and completes the steps of the above method in combination with its hardware.

[0115] The electronic device provided in the embodiment of the present application and the method provided in the embodiment of the present application are based on the same inventive concept and have the same beneficial effects as the method adopted, operated or implemented by them.

[0116] Based on the same technical concept, an embodiment of the present application also provides a heat pump unit system, including a heat pump host and a plurality of heat pump slaves, and also includes the device or the electronic device described above.

[0117] The present application also provides a computer-readable storage medium corresponding to the method provided in the above embodiment. Figure 6 The computer-readable storage medium shown is a CD 30 on which a computer program (ie, a program product) is stored. When the computer program is run by a processor, the method provided in any of the aforementioned embodiments is executed.

[0118] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical or magnetic storage media, which are not listed here one by one.

[0119] The computer-readable storage medium provided in the above-mentioned embodiments of the present application and the method provided in the embodiments of the present application are based on the same inventive concept and have the same beneficial effects as the method adopted, run or implemented by the application program stored therein.

[0120] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of multiple such elements. The present application may be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

[0121] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

[0122] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heat pump unit operation control method, characterized in that: Applied to a heat pump unit, the heat pump unit includes a heat pump host and a plurality of heat pump slaves; the method includes: Obtaining the current temperature and preset loading curve of the heat pump host, wherein the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio; Determine an initial loading ratio according to the current ambient temperature and the preset loading curve; the preset loading curve includes a maximum loading ratio of the heat pump unit, a minimum loading ratio of the heat pump unit, an upper preset ambient temperature limit, and a lower preset ambient temperature limit; According to the target outlet water temperature and the current outlet water temperature, the initial loading ratio is corrected to obtain the target loading ratio; Determining the loading quantity of the heat pump slaves according to the current candidate number of the heat pump slaves and the target loading ratio; Control the heat pump slave corresponding to the loading quantity to work; Wherein, determining the initial loading ratio according to the current ambient temperature and the preset loading curve includes: calculating the difference obtained by subtracting the lower limit of the preset ambient temperature from the current ambient temperature as the first difference; calculating the difference obtained by subtracting the upper limit of the preset ambient temperature from the lower limit of the preset ambient temperature as the second difference; calculating the difference obtained by subtracting the minimum loading ratio of the heat pump unit from the maximum loading ratio of the heat pump unit as the third difference; calculating the ratio value between the first difference and the second difference; calculating the sum of the product of the ratio value and the third difference and the minimum loading ratio of the heat pump unit to obtain the initial loading ratio.

2. The method according to claim 1, characterized in that The step of correcting the initial loading ratio according to the target outlet water temperature and the current outlet water temperature to obtain the target loading ratio includes: Determining a water temperature correction coefficient according to a difference between the target water outlet temperature and the current water outlet temperature; The product of the initial loading ratio and the water temperature correction coefficient is calculated to obtain the target loading ratio.

3. The method according to claim 1, characterized in that The controlling the heat pump slave corresponding to the loading quantity to operate includes: Obtaining the current ambient temperature of each of the heat pump slaves; According to the order of the current ambient temperature of each of the heat pump slaves from high to low, the loaded number of heat pump slaves are selected to operate.

4. The method according to claim 1, characterized in that The controlling the heat pump slave corresponding to the loading quantity to operate includes: Obtaining the position and current ambient temperature of each of the heat pump slaves; Determine the startup sequence and quantity according to the position of each of the heat pump slaves and the current ambient temperature; The heat pump slaves are started step by step according to the start-up sequence and quantity.

5. The method according to claim 1, characterized in that Get preset loading curves, including: Display the user input interface; The preset loading curve is determined according to the received maximum loading ratio of the heat pump unit, the minimum loading ratio of the heat pump unit, the preset upper limit of the ambient temperature and the preset lower limit of the ambient temperature.

6. A heat pump unit operation control device, characterized in that: The heat pump unit operation control method according to any one of claims 1 to 5 is applied to a heat pump unit, wherein the heat pump unit comprises a heat pump host and a plurality of heat pump slaves; the device comprises: A parameter acquisition module, used to acquire the current temperature and a preset loading curve of the heat pump host, wherein the current temperature includes the current ambient temperature and the current outlet water temperature, and the preset loading curve is used to characterize the relationship between the ambient temperature and the loading ratio; A loading quantity module, used to determine the loading quantity of the heat pump slave according to the current temperature and the preset loading curve; The control module is used to control the operation of the heat pump slaves corresponding to the loading quantity.

7. An electronic device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method according to any one of claims 1 to 5.

8. A heat pump unit system, characterized in that: It comprises a heat pump host and a plurality of heat pump slaves, and also comprises the device according to claim 6 or the electronic device according to claim 7.

9. A computer-readable storage medium, characterized in that: Computer-readable instructions are stored thereon, and the computer-readable instructions can be executed by a processor to implement the method according to any one of claims 1-5.

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