Control method of heat pump system, controller, heat pump system, and storage medium

Abstract

The embodiment of the application provides a heat pump system control method, a controller, a heat pump system and a storage medium, comprising: acquiring an actual condensing temperature of the heat pump system, a set required water temperature of a hydraulic module and an actual outlet water temperature; determining a target condensing temperature according to the set required water temperature, the actual outlet water temperature and a target correction value; and controlling the operating frequency of the compressor according to the actual condensing temperature and the target condensing temperature. Since the embodiment of the application can determine the target correction value according to the water temperature parameter of the hydraulic module and / or the continuous operating time of the compressor, and revise the target condensing temperature, the target condensing temperature can be automatically adjusted according to the change of the load demand on the basis of the target condensing temperature control method, so as to achieve the operation rule of low condensing temperature under low load demand and high condensing temperature under high load demand, and then the reliability of the unit operation can be ensured, the low energy consumption can be achieved, and the use demand of the user can be met at the same time.

Description

Technical Field

[0001] This application relates to the field of heat pump system technology, and in particular to a control method, controller, heat pump system, and storage medium for a heat pump system. Background Technology

[0002] In related technologies, current air source heat pump heating hydraulic modules typically employ two technical solutions: a one-to-one pairing of the outdoor unit and hydraulic module, similar to a split air conditioner; and a system where the hydraulic module is paired with one or more ducted air conditioners on a single outdoor unit, utilizing both refrigerant and water. For the refrigerant-water system, two control methods exist: first, a tabular segmented control method where each ambient temperature range and water temperature range corresponds to the operating frequency of one unit; second, a target condensing temperature control method that determines the desired ideal condensing temperature based on the set water temperature, and then adjusts the frequency based on the difference between the actual condensing temperature and the target condensing temperature.

[0003] However, for the list-based segmented control method: when the load changes in the application scenario deviate significantly from the energy supply changes of the unit, the heating supply capacity of the hydraulic module may be insufficient or excessive. Corrective control is then implemented, but large range adjustments result in slow adjustments, while small range adjustments result in fast adjustments, severely impacting the user experience. Furthermore, as application scenario demands change, the compressor may operate beyond its operating range, posing a potential reliability risk to the unit. Additionally, for the target condensing temperature control method: situations arise where the water temperature is low but the condensing temperature is high, leading to increased unit power consumption, lower energy efficiency, and poor energy-saving effects. Moreover, frequent start-stop cycles occur when the demand load is too low, while the required temperature cannot be reached when the demand load is too high. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a control method, controller, heat pump system, and storage medium for a heat pump system, designed to ensure reliable unit operation and low energy consumption while also meeting user needs.

[0005] In a first aspect, embodiments of this application provide a control method for a heat pump system, the heat pump system including an outdoor unit and a hydraulic module, the outdoor unit and the hydraulic module being connected via refrigerant piping; the control method includes:

[0006] The actual condensing temperature of the heat pump system, the set water temperature requirement of the hydraulic module, and the actual outlet water temperature are obtained.

[0007] The target condensing temperature is determined based on the set required water temperature, the actual outlet water temperature, and the target correction value, wherein the target correction value is determined by the water temperature parameters of the hydraulic module and / or the continuous operating time of the compressor.

[0008] The operating frequency of the compressor is controlled based on the actual condensing temperature and the target condensing temperature.

[0009] According to some embodiments of this application, the actual condensation temperature is obtained through the following steps:

[0010] Obtain the actual condensing pressure on the discharge port side of the compressor;

[0011] The actual condensing temperature corresponding to the actual condensing pressure is determined based on the actual condensing pressure.

[0012] According to some embodiments of this application, determining the target condensing temperature based on the set required water temperature, the actual outlet water temperature, and the target correction value includes:

[0013] Calculate the sum of the set required water temperature, the actual outlet water temperature, and the target correction value;

[0014] The sum of these temperatures is taken as the target condensation temperature.

[0015] According to some embodiments of this application, the target correction value includes a first temperature correction value, which is determined through the following steps:

[0016] Determine the target heat transfer temperature difference corresponding to the set required water temperature based on the set required water temperature;

[0017] The target heat transfer temperature difference is used as the first temperature correction value.

[0018] According to some embodiments of this application, the target correction value includes a second temperature correction value, which is determined through the following steps:

[0019] Calculate the first temperature difference between the set required water temperature and the actual outlet water temperature;

[0020] A second temperature correction value corresponding to the first temperature difference is determined based on the first temperature difference.

[0021] According to some embodiments of this application, the target correction value includes a third temperature correction value, which is determined through the following steps:

[0022] Obtain the actual inlet water temperature of the hydraulic module;

[0023] A third temperature correction value is determined based on the actual outlet water temperature and the actual inlet water temperature.

[0024] According to some embodiments of this application, determining the third temperature correction value based on the actual outlet water temperature and the actual inlet water temperature includes one of the following:

[0025] Calculate the inlet and outlet water temperature difference between the actual outlet water temperature and the actual inlet water temperature, and determine a third temperature correction value based on the inlet and outlet water temperature difference;

[0026] Calculate the first temperature difference between the set required water temperature and the actual outlet water temperature, as well as the inlet and outlet water temperature differences of multiple sets of the actual outlet water temperature and the actual inlet water temperature. Determine the inlet and outlet water temperature difference change rate of the hydraulic module based on the multiple sets of inlet and outlet water temperature differences. Determine the third temperature correction value based on the first temperature difference and the inlet and outlet water temperature difference change rate.

[0027] According to some embodiments of this application, determining the third temperature correction value based on the inlet and outlet water temperature difference includes one of the following:

[0028] When the inlet and outlet water temperature difference is a set, if the inlet and outlet water temperature difference is less than or equal to the first preset temperature, the third temperature correction value is set to zero.

[0029] When there are multiple sets of inlet and outlet water temperature differences, the target inlet and outlet water temperature difference with the smallest value is selected from the multiple sets of inlet and outlet water temperature differences. When the target inlet and outlet water temperature difference is less than or equal to the first preset temperature, the third temperature correction value is set to zero.

[0030] According to some embodiments of this application, the target correction value includes a fourth temperature correction value, which is determined through the following steps:

[0031] Obtain the lower limit of continuous operation time and the continuous operation time after startup of the compressor;

[0032] Calculate the cumulative number of times the continuous running time is less than the continuous running lower limit time;

[0033] A fourth temperature correction value corresponding to the cumulative number of times is determined based on the cumulative number of times.

[0034] According to some embodiments of this application, the continuous operation lower limit time is obtained through the following steps:

[0035] Obtain the outdoor ambient temperature;

[0036] The minimum continuous operating time corresponding to the outdoor ambient temperature is determined based on the outdoor ambient temperature.

[0037] According to some embodiments of this application, the control method further includes:

[0038] When the compressor is shut down or the continuous running time is greater than or equal to the lower limit of continuous running time, the cumulative count is reset to zero.

[0039] According to some embodiments of this application, after determining the target condensate temperature based on the set required water temperature, the actual outlet water temperature, and the target correction value, the control method further includes:

[0040] The temperature change of the actual condensing temperature and the frequency change of the compressor are obtained for at least one detection cycle;

[0041] When the temperature change is less than or equal to the second preset temperature and the frequency change is less than or equal to the preset frequency, the target correction value is re-determined to correct and adjust the target condensation temperature.

[0042] When the temperature change is greater than the second preset temperature or the frequency change is greater than the preset frequency, the target condensation temperature is maintained unchanged.

[0043] According to some embodiments of this application, the detection cycle is determined through the following steps:

[0044] Calculate the second temperature difference between the actual condensation temperature and the target condensation temperature;

[0045] The detection cycle is determined based on the temperature change of the second temperature difference and the actual condensation temperature.

[0046] Secondly, embodiments of this application provide a controller, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the control method of the heat pump system as described in the first aspect above when running the computer program.

[0047] Thirdly, embodiments of this application provide a heat pump system, including a controller as described in the second aspect above.

[0048] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for performing the control method of the heat pump system as described in the first aspect above.

[0049] According to the technical solution of this application embodiment, at least the following beneficial effects are achieved: First, this application embodiment obtains the actual condensing temperature of the heat pump system, the set water temperature requirement of the hydraulic module, and the actual outlet water temperature; then, this application embodiment determines the target condensing temperature based on the set water temperature requirement, the actual outlet water temperature, and the target correction value, wherein the target correction value is determined by the water temperature parameter of the hydraulic module and / or the continuous operating time of the compressor; next, this application embodiment controls the operating frequency of the compressor based on the actual condensing temperature and the target condensing temperature. Since this application embodiment can determine the target correction value based on the water temperature parameter of the hydraulic module and / or the continuous operating time of the compressor, and revise the target condensing temperature, it can automatically adjust the target condensing temperature according to changes in load demand based on the target condensing temperature control method, to achieve the operating rule of low condensing temperature under low load demand and high condensing temperature under high load demand, thereby ensuring both the reliability of unit operation and low energy consumption while meeting user needs.

[0050] Additional aspects and advantages 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. Attached Figure Description

[0051] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0052] Figure 1 This is a schematic diagram of the overall structure of a heat pump system provided in one embodiment of this application;

[0053] Figure 2 This is a flowchart of a control method for a heat pump system provided in one embodiment of this application;

[0054] Figure 3 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0055] Figure 4 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0056] Figure 5 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0057] Figure 6 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0058] Figure 7 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0059] Figure 8 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0060] Figure 9 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0061] Figure 10 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0062] Figure 11 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0063] Figure 12 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0064] Figure 13 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0065] Figure 14 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0066] Figure 15 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0067] Figure 16 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application;

[0068] Figure 17 This is an overall flowchart of a control method for a heat pump system provided in one embodiment of this application;

[0069] Figure 18 This is a schematic diagram of a controller for performing a control method for a heat pump system according to an embodiment of this application. Detailed Implementation

[0070] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0071] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0072] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0073] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0074] In some cases, current air source heat pump heating hydraulic modules typically employ one of two technical solutions: a one-to-one pairing of the outdoor unit and hydraulic module, similar to a split air conditioner; and a system where the hydraulic module is paired with one or more ducted air conditioners on a single outdoor unit, using a combined refrigerant and ground-water system. For the combined refrigerant and ground-water system, there are two control methods: First, a tabular segmented control method where each ambient temperature range and water temperature range corresponds to the operating frequency of one unit; second, a target condensing temperature control method where the desired ideal condensing temperature is determined based on the set water temperature, and then frequency adjustment is performed based on the difference between the actual condensing temperature and the target condensing temperature.

[0075] However, for the list-based segmented control method: when the load changes in the application scenario deviate significantly from the energy supply changes of the unit, the heating supply capacity of the hydraulic module may be insufficient or excessive. Corrective control is then implemented, but large range adjustments result in slow adjustments, while small range adjustments result in fast adjustments, severely impacting the user experience. Furthermore, as application scenario demands change, the compressor may operate beyond its operating range, posing a potential reliability risk to the unit. Additionally, for the target condensing temperature control method: situations arise where the water temperature is low but the condensing temperature is high, leading to increased unit power consumption, lower energy efficiency, and poor energy-saving effects. Moreover, frequent start-stop cycles occur when the demand load is too low, while the required temperature cannot be reached when the demand load is too high.

[0076] Based on the above, this application proposes a control method, controller, heat pump system, and storage medium for a heat pump system, aiming to ensure the reliability and low energy consumption of the unit while meeting the user's needs.

[0077] The various embodiments of the heat pump system of this application will be further described below with reference to the accompanying drawings.

[0078] like Figure 1 As shown, Figure 1 This is a schematic diagram of the overall structure of a heat pump system provided in one embodiment of this application.

[0079] In one embodiment, the heat pump system may include, but is not limited to, an outdoor unit 100 and a hydraulic module 200, which are connected by refrigerant piping.

[0080] It should be noted that, as Figure 1 As shown, the outdoor unit 100 mentioned above includes, but is not limited to, a compressor 110, an outdoor heat exchanger 120, and an outdoor fan. The compressor 110, the outdoor heat exchanger 120, and the hydraulic module 200 are connected by refrigerant piping. The outdoor heat exchanger 120 can be a finned heat exchanger or a heat exchanger of other structural types; this application embodiment does not specifically limit this.

[0081] Additionally, in one embodiment, such as Figure 1 As shown, the outdoor unit 100 also includes, but is not limited to, a pressure sensor 130, which is installed at the exhaust port of the compressor 110 and is used to detect the condensing pressure on the exhaust port side of the compressor 110.

[0082] Additionally, in one embodiment, such as Figure 1 As shown, the outdoor unit 100 also includes, but is not limited to, a four-way reversing valve 140, which is installed at the exhaust port of the compressor 110. In heating mode, the four-way reversing valve 140 is used to connect the exhaust port of the compressor 110 and the hydraulic module 200, and to connect the outdoor heat exchanger 120 and the return port of the compressor 110.

[0083] Additionally, in one embodiment, such as Figure 1 As shown, the outdoor unit 100 also includes, but is not limited to, a gas-liquid separator 150, which is installed at the return port of the compressor 110.

[0084] Additionally, in one embodiment, such as Figure 1 As shown, the outdoor unit 100 also includes, but is not limited to, an electronic expansion valve 160, which is installed in the refrigerant pipeline between the outdoor heat exchanger 120 and the hydraulic module 200.

[0085] Additionally, in one embodiment, such as Figure 1 As shown, the outdoor unit 100 also includes, but is not limited to, multiple shut-off valves 170, wherein one shut-off valve 170 is disposed in the refrigerant line between the four-way reversing valve 140 and the hydraulic module 200, and another shut-off valve 170 is disposed in the refrigerant line between the electronic expansion valve 160 and the hydraulic module 200.

[0086] Additionally, it should be noted that the aforementioned hydraulic module 200 includes, but is not limited to, a heat exchanger, which may be a water-fluorine heat exchanger, including but not limited to plate heat exchangers, shell-and-tube heat exchangers, shell-and-tube heat exchangers, or other types of heat exchangers. This application embodiment does not specifically limit this.

[0087] In another embodiment, the hydraulic module 200 also includes, but is not limited to, water circuit accessories such as expansion valves and flow switches.

[0088] In addition, such as Figure 1 As shown, the heat pump system may also include, but is not limited to, a ducted air conditioner 300. The refrigerant-cycled ducted air conditioner 300 can be installed on the indoor roof (i.e., rooftop refrigerant). The hydraulic module 200 converts the heat from the refrigerant system circulating from the outdoor unit 100 into water to supply hot water to users for heating indoor underfloor heating, radiators, or bathroom dryers, etc. (ground water). Therefore... Figure 1 The heat pump system shown can also be called a fluorine-water system.

[0089] The working principle of the hydraulic module 200 of the Tianfudi water system is as follows: After the outdoor unit 100 is turned on, the hydraulic module 200 obtains high-grade heat medium from the outdoor unit 100 and transfers the heat in the high-grade heat medium to the water. At the same time, it circulates the low-grade refrigerant after the heat transfer to the outdoor unit 100 and provides hot water with a relatively high temperature after absorbing heat. Through continuous circulation, the hydraulic module 200 can continuously provide hot water, thereby meeting the heating needs.

[0090] Based on the hardware structure of the heat pump system in the above embodiments, the following presents various embodiments of the control method of the heat pump system of this application.

[0091] like Figure 2 As shown, Figure 2 This is a flowchart of a control method for a heat pump system provided in one embodiment of this application. The control method for the heat pump system may include, but is not limited to, steps S210, S220, and S230.

[0092] Step S210: Obtain the actual condensing temperature of the heat pump system, the set water temperature of the hydraulic module, and the actual outlet water temperature;

[0093] Step S220: Determine the target condensing temperature based on the set required water temperature, the actual outlet water temperature, and the target correction value, wherein the target correction value is determined by the water temperature parameters of the hydraulic module and / or the continuous running time of the compressor;

[0094] Step S230: Control the operating frequency of the compressor according to the actual condensing temperature and the target condensing temperature.

[0095] In one embodiment, the control method involves the operation control of the outdoor unit and the hydraulic module: First, this embodiment acquires the user-set required water temperature for the hydraulic module, detects the actual outlet water temperature of the hydraulic module, and also detects the actual condensing temperature of the heat pump system; then, this embodiment determines a target correction value based on the water temperature parameters of the hydraulic module and / or the continuous operating time of the compressor; next, this embodiment determines an initial desired condensing temperature based on the set required water temperature and the actual outlet water temperature, and also corrects the initial desired condensing temperature using the target correction value to obtain the target condensing temperature; finally, this embodiment compares the target condensing temperature with the actual condensing temperature, and controls the operating frequency of the compressor based on the comparison result.

[0096] It is understood that the water temperature setting mentioned above can be a temperature set by the user. The user can set it via remote control, mobile phone, or voice. This application embodiment does not specifically limit this.

[0097] Additionally, it is understandable that the actual water temperature mentioned above could be the water temperature at the outlet of the hydraulic module.

[0098] It should be noted that the water temperature parameters of the hydraulic module mentioned above may include the water temperature required for the hydraulic module, the actual outlet water temperature of the hydraulic module, the actual inlet water temperature of the hydraulic module, or other parameters. This application embodiment does not specifically limit these parameters.

[0099] Additionally, it should be noted that the continuous operating time of the compressor mentioned above can refer to the continuous operating time of the compressor after it has been turned on.

[0100] Additionally, it should be noted that regarding the initial expected condensing temperature and target condensing temperature mentioned above, if the target correction value is positive, the initial expected condensing temperature will be less than the target condensing temperature; if the target correction value is negative, the initial expected condensing temperature will be greater than the target condensing temperature; and if the target correction value is zero, the initial expected condensing temperature will be equal to the target condensing temperature.

[0101] It is worth noting that, since the embodiments of this application can determine the target correction value based on the water temperature parameters of the hydraulic module and / or the continuous running time of the compressor, and revise the target condensing temperature, the target condensing temperature can be automatically adjusted according to the changes in load demand based on the target condensing temperature control method, so as to achieve the operating rule of low condensing temperature under low load demand and high condensing temperature under high load demand, thereby achieving both the reliability of unit operation and low energy consumption while meeting the user's needs.

[0102] In addition, such as Figure 3 As shown, Figure 3 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. The process for obtaining the actual condensing temperature described above includes, but is not limited to, steps S310 and S320.

[0103] Step S310: Obtain the actual condensing pressure on the compressor's discharge port side;

[0104] Step S320: Determine the actual condensing temperature corresponding to the actual condensing pressure based on the actual condensing pressure.

[0105] In one embodiment, the present invention can detect the pressure at the compressor exhaust pipe, i.e., the actual condensing pressure, using a pressure sensor; since each condensing pressure corresponds to a condensing temperature, the present invention can calculate the corresponding actual condensing temperature based on the actual condensing pressure.

[0106] It should be noted that the actual condensing temperature corresponding to the actual condensing pressure can be determined by looking up a table, by calculation formula, or by neural network model in the embodiments of this application. The embodiments of this application do not make specific limitations on this.

[0107] In addition, such as Figure 4 As shown, Figure 4 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. Regarding step S220 above, determining the target condensing temperature based on the set demand water temperature, the actual outlet water temperature, and the target correction value, the acquisition process includes, but is not limited to, steps S410 and S420.

[0108] Step S410: Calculate the sum of the set required water temperature, the actual outlet water temperature, and the target correction value.

[0109] Step S420: Use the total temperature as the target condensation temperature.

[0110] In one embodiment, the present application embodiment can superimpose the required water temperature, the actual outlet water temperature and the target correction value to obtain the total temperature, which is the target condensation temperature.

[0111] In addition, such as Figure 5 As shown, Figure 5 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. When the target correction value includes a first temperature correction value, the process for obtaining the first temperature correction value includes, but is not limited to, steps S510 and S520.

[0112] Step S510: Determine the target heat transfer temperature difference corresponding to the set required water temperature based on the set required water temperature;

[0113] Step S520: Use the target heat transfer temperature difference as the first temperature correction value.

[0114] In one embodiment, the present application embodiment can set multiple temperature ranges, wherein each temperature range corresponds to a heat transfer temperature difference; then, the present application embodiment will determine the target temperature range in which the required water temperature is located; next, the present application embodiment can use the target heat transfer temperature difference corresponding to the target temperature range as a first temperature correction value.

[0115] It is worth noting that setting different optimal target heat transfer temperature differences for different demand temperatures is more conducive to providing greater heating capacity with less energy consumption. Once the configuration of the unit system is determined, there must be an optimal heat transfer temperature difference, and the required heat transfer temperature difference is also different for different demand temperatures. The multi-segment control method provided by the control method of this application, which corresponds to different heat transfer temperature differences for different demand temperatures, is more conducive to providing a more suitable heat transfer temperature difference for the unit throughout its entire operating range.

[0116] In addition, such as Figure 6 As shown, Figure 6 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. When the target correction value includes a second temperature correction value, the process for obtaining the second temperature correction value includes, but is not limited to, steps S610 and S620.

[0117] Step S610: Calculate the first temperature difference between the set required water temperature and the actual outlet water temperature;

[0118] Step S620: Determine the second temperature correction value corresponding to the first temperature difference based on the first temperature difference.

[0119] In one embodiment, the present application embodiment can set multiple temperature ranges, wherein each temperature range corresponds to a temperature correction value; then, the present application embodiment will calculate the difference between the set required water temperature and the actual outlet water temperature to obtain a first temperature difference value; next, the present application embodiment will determine the target temperature range in which the first temperature difference value is located; then, the present application embodiment can use the temperature correction value corresponding to the target temperature range as a second temperature correction value.

[0120] It should be noted that, Figure 6 The temperature range involved and Figure 5 The temperature ranges involved can be different ranges, that is, the temperature range values ​​of the two can be different.

[0121] It is worth noting that, according to the different loads of the hydraulic module (i.e., the difference between the set demand water temperature and the actual outlet water temperature), the target heat transfer temperature difference can be corrected, which can improve the accuracy of the unit control direction, avoid fluctuations in unit adjustment, and further ensure the high efficiency and reliability of the unit.

[0122] In addition, such as Figure 7 As shown, Figure 7 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. When the target correction value includes a third temperature correction value, the process for obtaining the aforementioned third temperature correction value includes, but is not limited to, steps S710 and S720.

[0123] Step S710: Obtain the actual inlet water temperature of the hydraulic module;

[0124] Step S720: Determine the third temperature correction value based on the actual outlet water temperature and the actual inlet water temperature.

[0125] In one embodiment, the present application embodiment can detect the actual inlet water temperature of the hydraulic module by a temperature sensor, and then analyze the actual outlet water temperature and the actual inlet water temperature to obtain a third temperature correction value.

[0126] Additionally, it should be noted that the determination of the third temperature correction value based on the actual outlet water temperature and the actual inlet water temperature in step S720 above may include, but is not limited to, the following: Figure 8 or Figure 9 The two implementation scenarios are as follows:

[0127] like Figure 8 As shown, Figure 8 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. Step S720 described above may include, but is not limited to, steps S810 and S820.

[0128] Step S810: Calculate the temperature difference between the actual outlet water temperature and the actual inlet water temperature;

[0129] Step S820: Determine the third temperature correction value based on the temperature difference between the inlet and outlet water.

[0130] In one embodiment, the present application embodiment can calculate the difference between at least one set of actual outlet water temperature and actual inlet water temperature to obtain at least one set of inlet and outlet water temperature differences. Then, it compares the at least one set of inlet and outlet water temperature differences with a first preset temperature and obtains a third temperature correction value based on the comparison result.

[0131] like Figure 9 As shown, Figure 9 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. Step S720 may include, but is not limited to, steps S910, S920, and S930.

[0132] Step S910: Calculate the first temperature difference between the set required water temperature and the actual outlet water temperature, as well as the inlet and outlet water temperature differences of multiple sets of actual outlet water temperatures and actual inlet water temperatures;

[0133] Step S920: Determine the rate of change of the inlet and outlet water temperature difference of the hydraulic module based on multiple sets of inlet and outlet water temperature differences;

[0134] Step S930: Determine the third temperature correction value based on the first temperature difference and the rate of change of the inlet and outlet water temperature difference.

[0135] In one embodiment, this application embodiment can subtract multiple sets of actual outlet water temperatures and actual inlet water temperatures to obtain multiple sets of inlet and outlet water temperature differences; then, the multiple sets of inlet and outlet water temperature differences are calculated to obtain the inlet and outlet water temperature difference change rate; in addition, this application embodiment will also subtract the set required water temperature from the actual outlet water temperature to obtain a first temperature difference value; then, this application embodiment will determine the temperature range in which the first temperature difference value is located and calculate a third temperature correction value based on the relationship between the inlet and outlet water temperature difference change rate and zero value.

[0136] It is worth noting that the embodiments of this application provide a method for controlling the target condensing temperature to solve the matching between unit capacity and usage requirements, which can better meet usage needs.

[0137] Additionally, it should be noted that the determination of the third temperature correction value based on the inlet and outlet water temperature difference in step S820 above may include, but is not limited to, the following: Figure 10 or Figure 11 The two implementation scenarios are as follows:

[0138] like Figure 10 As shown, Figure 10This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. Step S820 described above may include, but is not limited to, steps S1010 and S1020.

[0139] Step S1010: When the inlet and outlet water temperature difference is one set;

[0140] Step S1020: When the temperature difference between the inlet and outlet water is less than or equal to the first preset temperature, set the third temperature correction value to zero.

[0141] In one embodiment, if there is only one set of inlet and outlet water temperature differences, then the inlet and outlet water temperature differences are compared with a first preset temperature. If the inlet and outlet water temperature differences are less than or equal to the first preset temperature, then the third temperature correction value is zero.

[0142] It should be noted that the first preset temperature mentioned above can be zero or other values, and this application embodiment does not specifically limit it.

[0143] like Figure 11 As shown, Figure 11 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. Step S820 described above may include, but is not limited to, steps S1110 and S1120.

[0144] Step S1110: When there are multiple sets of inlet and outlet water temperature differences, select the target inlet and outlet water temperature difference with the smallest value from the multiple sets of inlet and outlet water temperature differences;

[0145] Step S1120: When the target inlet and outlet water temperature difference is less than or equal to the first preset temperature, set the third temperature correction value to zero.

[0146] In one embodiment, if there are multiple sets of inlet and outlet water temperature differences, the present application embodiment will filter the multiple sets of inlet and outlet water temperature differences to obtain the target inlet and outlet water temperature difference with the smallest value; then compare the target inlet and outlet water temperature difference with the first preset temperature. When the target inlet and outlet water temperature difference is less than or equal to the first preset temperature, the third temperature correction value is zero.

[0147] It should be noted that the first preset temperature mentioned above can be zero or other values, and this application embodiment does not specifically limit it.

[0148] In addition, such as Figure 12 As shown, Figure 12 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. When the target correction value includes a fourth temperature correction value, the process for obtaining the aforementioned fourth temperature correction value includes, but is not limited to, steps S1210, S1220, and S1230.

[0149] Step S1210: Obtain the compressor's continuous operating lower limit time and continuous operating time after startup;

[0150] Step S1220: Calculate the cumulative number of times the continuous running time is less than the lower limit of continuous running time;

[0151] Step S1230: Determine the fourth temperature correction value corresponding to the cumulative number of times.

[0152] In one embodiment, the present application embodiment obtains the lower limit of the continuous operation time of the compressor and the continuous operation time of the compressor after startup; if the continuous operation time is less than the lower limit of the continuous operation time, the counter is incremented by one; in addition, the present application embodiment sets multiple count intervals, wherein each count interval corresponds to a temperature correction value; then, the present application embodiment determines the target count interval in which the accumulated counts are located; then, the present application embodiment can use the temperature correction value corresponding to the target count interval as the fourth temperature correction value.

[0153] In addition, such as Figure 13 As shown, Figure 13 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. The process for obtaining the aforementioned lower limit of continuous operation time includes, but is not limited to, steps S1310 and S1320.

[0154] Step S1310: Obtain the outdoor ambient temperature;

[0155] Step S1320: Determine the lower limit of continuous operation time corresponding to the outdoor ambient temperature based on the outdoor ambient temperature.

[0156] In one embodiment, the present application embodiment sets multiple temperature ranges, wherein each temperature range corresponds to a time value; then, the present application embodiment detects the outdoor ambient temperature and determines the target temperature range in which the outdoor ambient temperature is located; then, the present application embodiment can use the time value corresponding to the target temperature range as the lower limit time for continuous operation.

[0157] It should be noted that, Figure 13 The temperature range involved and Figure 5 and Figure 6 The temperature ranges involved can be different ranges, that is, the temperature range values ​​of the two can be different.

[0158] Based on the above Figure 12 and Figure 13 This application provides a control method to ensure the shortest continuous operating time of the compressor under different outdoor ambient temperatures. This method can ensure the lubricity of the lubricating oil in the compressor and the amount of refrigerant stored in the cylinder after the compressor reaches the required temperature and before the next start-up, thereby further improving the efficiency and reliability of the system.

[0159] In addition, such as Figure 14 As shown, Figure 14 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. The control method of this application embodiment also includes, but is not limited to, steps S1410 and S1420.

[0160] Step S1410: When the compressor is turned off or the continuous running time is greater than or equal to the lower limit of continuous running time;

[0161] Step S1420: Reset the cumulative count to zero.

[0162] In one embodiment, the count is reset to zero when a shutdown occurs or the running time exceeds the minimum continuous running time; that is, the count is reset to zero when a shutdown occurs or the running time exceeds the minimum running time.

[0163] In addition, such as Figure 15 As shown, Figure 15 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. After performing the above step S220, the control method of this application embodiment also includes, but is not limited to, steps S1510, S1520 and S1530.

[0164] Step S1510: Obtain the actual condensation temperature change and compressor frequency change for at least one detection cycle;

[0165] Step S1520: When the temperature change is less than or equal to the second preset temperature and the frequency change is less than or equal to the preset frequency, redetermine the target correction value to correct and adjust the target condensation temperature.

[0166] Step S1530: When the temperature change is greater than the second preset temperature or the frequency change is greater than the preset frequency, maintain the target condensation temperature unchanged.

[0167] In one embodiment, this application embodiment acquires the actual condensing temperature change over one or more detection cycles, and also acquires the compressor frequency change over one or more detection cycles. Then, this application embodiment compares the actual condensing temperature change with a second preset temperature, and also compares the compressor frequency change with a preset frequency. If the temperature change is less than or equal to the second preset temperature and the frequency change is less than or equal to the preset frequency, then the previously calculated target correction value is no longer appropriate. In this case, a new target condensing temperature needs to be recalculated based on the water temperature parameters of the hydraulic module and / or the continuous operating time of the compressor. If the temperature change is greater than the second preset temperature or the frequency change is greater than the preset frequency, then the previously calculated target correction value is still within a reasonable range. In this case, the previously calculated target correction value can continue to be used, and there is no need to adjust the target condensing temperature.

[0168] It should be noted that the value of the second preset temperature mentioned above can be freely set according to the actual situation, and this application embodiment does not impose specific limitations on it.

[0169] It should be noted that the value of the aforementioned preset frequency can be freely set according to the actual situation, and this application embodiment does not impose specific limitations on it.

[0170] In addition, such as Figure 16 As shown, Figure 16 This is a flowchart of a control method for a heat pump system provided in another embodiment of this application. The process for determining the detection cycle described above may include, but is not limited to, steps S1610 and S1620.

[0171] Step S1610: Calculate the second temperature difference between the actual condensation temperature and the target condensation temperature;

[0172] Step S1620: Determine the detection cycle based on the second temperature difference and the actual temperature change of the condensation temperature.

[0173] In one embodiment, this application sets multiple first temperature ranges and multiple second temperature ranges, wherein a combination of a first temperature range and a second temperature range corresponds to a duration. Then, this application calculates the difference between the actual condensation temperature and the target condensation temperature to obtain a second temperature difference value. Next, this application determines the target first temperature range in which the second temperature difference value is located. Simultaneously, it calculates the temperature change of the actual condensation temperature and determines the target second temperature range in which the temperature change value is located. Finally, this application can use the duration corresponding to the combination of the target first temperature range and the target second temperature range as the duration of the detection cycle.

[0174] It is worth noting that the embodiments of this application provide a detection cycle based on the changes in the actual condensation temperature and the difference between the actual condensation temperature and the target temperature, so as to adjust the condensation temperature of the system to a suitable target condensation temperature more quickly and accurately.

[0175] Based on the control methods of the heat pump system described in the above embodiments, the overall embodiments of the control methods of the heat pump system of this application are presented below.

[0176] like Figure 17 As shown, Figure 17 This is an overall flowchart of a control method for a heat pump system provided in one embodiment of this application. The specific operation control method is as follows:

[0177] 1. Power on the hydraulic module and set the required water temperature T. 设 ;

[0178] 2. Determine if the conditions for powering on are met;

[0179] 2.1 If the power-on conditions are met, proceed to logic 3;

[0180] 2.2 If the conditions for powering on are not met, proceed to logic 4;

[0181] 3. Start the unit and set the required water temperature T. 设 and the actual outlet water temperature T of the hydraulic module 出 Calculate the target condensation temperature T 目冷 (T 目冷 =T 出 +d s +G+H+K, where d s G represents the target heat transfer temperature difference; G represents the water temperature T required for different settings. 设 Compared with the actual outlet water temperature T 出 The target condensing temperature correction value is the difference between the two values; H is the correction value based on the rate of change of the temperature difference between the inlet and outlet water of the hydraulic module; K is the correction value based on the time interval between the hydraulic module reaching the required temperature and shutting down and restarting; the corresponding actual condensing temperature T is calculated based on the actual condensing pressure of the system fed back by the pressure sensor. 实冷 Next, the frequency conversion is adjusted by comparing the target condensation temperature and the actual condensation temperature, wherein when T... 目冷 >T 实冷 When the compressor frequency increases, when T 目冷 =T 实冷 The compressor maintains its current frequency, T 目冷 <T 实冷 The compressor frequency is reduced.

[0182] 3.1 When three consecutive detection cycles Tim 检测 (As shown in Table 4) The actual condensation temperature T was detected. 实冷Change |ΔT 实冷 |≤1℃ and compressor operating frequency F x Change | ΔF x When |≤1Hz, the unit enters the target condensing temperature T 目冷 Correction adjustment. Where ΔT 实冷 =T 实冷1 -T 实冷0 Detection cycle Tim 检测 Based on the actual condensation temperature T 实冷 Changes and their relationship with the target condensation temperature T 目冷 The difference is taken as shown in Table 3 below;

[0183] 3.2 When three consecutive detection cycles Tim 检测 (As shown in Table 4) |ΔT was not detected. 实冷 |≤1℃ and compressor operating frequency|ΔF x When |≤1Hz, the target condensation temperature T 目冷 Remain unchanged.

[0184] Wherein, for formula: T 目冷 =T 出 +d s +G+H+K, whose parameters are defined as follows:

[0185] T 目冷 —Target condensation temperature, as shown in Table 3;

[0186] T 出 —The actual outlet water temperature of the hydraulic module;

[0187] d s —The target heat transfer temperature difference based on the water temperature required for different settings is shown in Table 1;

[0188] G – Water temperature T required for different settings 设 Compared with the actual outlet water temperature T 出 The target condensation temperature correction values ​​for the difference are shown in Table 2.

[0189] H – Based on the rate of change of the temperature difference between the inlet and outlet water of the hydraulic module and the set required water temperature T 设 Compared with the actual outlet water temperature T 出 The target condensation temperature correction value for the difference (when MIN(ΔT) 进出0 ,ΔT 进出1 ,ΔT 进出2 When H ≤ 0℃, H = 0; otherwise, calculate according to Table 5; the temperature difference between the inlet and outlet water of the hydraulic module is expressed as ΔT. 进出 Indicates (ΔT) 进出 =T 出 -T 进 The rate of change of the inlet and outlet water temperature difference is represented by ΔT: (ΔT = ΔT)进出2 -ΔT 进出1 ) / (ΔT 进出1 -ΔT 进出0 ));

[0190] K – The compressor's continuous operating time at startup is lower than Tim's minimum continuous operating time at the corresponding ambient temperature. R (Based on ambient temperature T) 环 The target condensing temperature correction value is obtained as shown in Table 6 below. The counter k value is incremented by 1 for each time it is less than 1 (the relationship between the counter k value and the correction value K is shown in Table 7). The counter is reset to zero when the machine is shut down or the running time is greater than the minimum running time.

[0191] 3.3. The unit will be shut down once it reaches the set required temperature.

[0192] 4. If the unit is not started, ensure that the unit is normally monitoring relevant pressure and temperature, and operate according to logic 3 after the start-up conditions are met.

[0193] In addition, Tables 1 to 7 are as follows:

[0194] Table 1 Target heat transfer difference d s Value table

[0195] <![CDATA[T 设 ]]> ≤30℃ ≤35℃ ≤40℃ ≤45℃ ≤50℃ ≤55℃ ≤60℃ <![CDATA[d s ]]> <![CDATA[d s1 ]]> <![CDATA[d s2 ]]> <![CDATA[d s3 ]]> <![CDATA[d s4 ]]> <![CDATA[d s5 ]]> <![CDATA[d s6 ]]> <![CDATA[d s7 ]]>

[0196] As shown in Table 1, setting different optimal target heat transfer temperature differences for different demand temperatures is more conducive to providing greater heating capacity with less energy consumption. Once the configuration of the unit system is determined, there must be an optimal heat transfer temperature difference, and the required heat transfer temperature difference will also be different for different demand temperatures. The multi-segment control method provided by this control method, which corresponds to different heat transfer temperature differences for different demand temperatures, is more conducive to providing a more suitable heat transfer temperature difference for the unit throughout its entire operating range.

[0197] Table 2. Values ​​of the target condensation temperature correction G

[0198]

[0199] As shown in Table 2, the target heat transfer temperature difference can be corrected according to the different loads of the heating hydraulic module (i.e., the difference between the required temperature and the current actual temperature). This can improve the accuracy of the unit control direction, avoid fluctuations in unit regulation, and further ensure the unit's high efficiency and reliability.

[0200] Table 3 Target Condensation Temperature T 目冷 Calculation table

[0201]

[0202]

[0203] As shown in Table 3, a control scheme is provided that integrates load changes and system operation changes to achieve a more comprehensive target condensing temperature, thereby improving the accuracy of unit control direction.

[0204] Table 4 Detection Cycle Tim 检测 Value table

[0205]

[0206] As shown in Table 4, a detection cycle based on the changes in actual condensation temperature and the difference from the target temperature is provided to enable the system's condensation temperature to be adjusted to a suitable target condensation temperature more quickly and accurately.

[0207] Table 5. Values ​​of Target Condensation Temperature Correction H

[0208]

[0209]

[0210] As shown in Table 5, a method for controlling the target condensing temperature to address the matching of unit capacity and usage requirements is provided, which can better meet usage needs.

[0211] Table 6 Shortest Continuous Compressor Running Time Tim R Value table

[0212]

[0213] Table 7. Values ​​of the target condensing temperature correction value K

[0214] k 0 1 2 3 4 ≥5 K K1 K2 K3 K4 K5 K6

[0215] As shown in Tables 6 and 7, a control method is provided to ensure the shortest continuous operating time of the compressor under different ambient temperatures. This method can ensure the lubricity of the lubricating oil in the compressor and the amount of refrigerant stored in the cylinder after the compressor reaches the required temperature and before the next start-up, thereby further improving the efficiency and reliability of the system.

[0216] Based on the control methods of the heat pump system described in the above embodiments, the following presents various embodiments of the controller, heat pump system, and computer-readable storage medium of this application.

[0217] like Figure 18 As shown, Figure 18 This is a schematic diagram of the structure of a controller for executing a control method for a heat pump system according to an embodiment of this application. The controller 400 implemented in this application includes: a processor 410, a memory 420, and a computer program stored in the memory 420 and executable on the processor 410, wherein... Figure 18The example uses a processor 410 and a memory 420.

[0218] The processor 410 and the memory 420 can be connected via a bus or other means. Figure 18 Taking the example of a connection between China and Israel via a bus.

[0219] Memory 420, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory 420 may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory 420 may optionally include remotely located memories 420 relative to processor 410, which can be connected to controller 400 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0220] Those skilled in the art will understand that Figure 18 The device structure shown does not constitute a limitation on the controller 400 and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0221] exist Figure 18 In the controller 400 shown, the processor 410 can be used to call the control program of the heat pump system stored in the memory 420, thereby implementing the control method of the heat pump system described above. Specifically, the non-transitory software program and instructions required to implement the control method of the heat pump system in the above embodiment are stored in the memory 420. When executed by the processor 410, the control method of the heat pump system in the above embodiment is executed.

[0222] It is worth noting that since the controller 400 of this application embodiment can execute the control method of the heat pump system of any of the above embodiments, the specific implementation method and technical effect of the controller 400 of this application embodiment can refer to the specific implementation method and technical effect of the control method of the heat pump system of any of the above embodiments.

[0223] In addition, one embodiment of this application provides a heat pump system including the controller described in the above embodiment.

[0224] It is worth noting that, since the heat pump system of this application embodiment includes the controller of the above embodiments, and the controller of the above embodiments is capable of executing the control method of the heat pump system of any of the above embodiments, the specific implementation method and technical effect of the heat pump system of this application embodiment can refer to the specific implementation method and technical effect of the control method of the heat pump system of any of the above embodiments.

[0225] Furthermore, one embodiment of this application provides a computer-readable storage medium storing computer-executable instructions for performing the control method of the heat pump system described above. Exemplarily, the above-described... Figures 2 to 17 The methods and steps in the text.

[0226] It is worth noting that, since the computer-readable storage medium of this application embodiment can execute the control method of the heat pump system of any of the above embodiments, the specific implementation and technical effects of the computer-readable storage medium of this application embodiment can be referred to the specific implementation and technical effects of the control method of the heat pump system of any of the above embodiments.

[0227] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0228] The above provides a detailed description of the preferred embodiments of this application. However, this application is not limited to the above-described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A control method for a heat pump system, characterized in that, The heat pump system includes an outdoor unit and a hydraulic module, which are connected via refrigerant piping; the control method includes: The actual condensing temperature of the heat pump system, the set water temperature requirement of the hydraulic module, and the actual outlet water temperature are obtained. The target condensing temperature is determined based on the set required water temperature, the actual outlet water temperature, and the target correction value, wherein the target correction value is determined by the water temperature parameters of the hydraulic module and the continuous running time of the compressor. The operating frequency of the compressor is controlled based on the actual condensing temperature and the target condensing temperature; The target correction value includes a fourth temperature correction value, which is determined through the following steps: Obtain the lower limit of continuous operation time and the continuous operation time after startup of the compressor; Calculate the cumulative number of times the continuous running time is less than the continuous running lower limit time; A fourth temperature correction value corresponding to the cumulative number of times is determined based on the cumulative number of times.

2. The control method according to claim 1, characterized in that, The actual condensation temperature is obtained through the following steps: Obtain the actual condensing pressure on the discharge port side of the compressor; The actual condensing temperature corresponding to the actual condensing pressure is determined based on the actual condensing pressure.

3. The control method according to claim 1, characterized in that, The step of determining the target condensing temperature based on the set required water temperature, the actual outlet water temperature, and the target correction value includes: Calculate the sum of the set required water temperature, the actual outlet water temperature, and the target correction value; The sum of these temperatures is taken as the target condensation temperature.

4. The control method according to claim 1, characterized in that, The target correction value includes a first temperature correction value, which is determined through the following steps: Determine the target heat transfer temperature difference corresponding to the set required water temperature based on the set required water temperature; The target heat transfer temperature difference is used as the first temperature correction value.

5. The control method according to claim 1, characterized in that, The target correction value includes a second temperature correction value, which is determined through the following steps: Calculate the first temperature difference between the set required water temperature and the actual outlet water temperature; A second temperature correction value corresponding to the first temperature difference is determined based on the first temperature difference.

6. The control method according to claim 1, characterized in that, The target correction value includes a third temperature correction value, which is determined through the following steps: Obtain the actual inlet water temperature of the hydraulic module; A third temperature correction value is determined based on the actual outlet water temperature and the actual inlet water temperature.

7. The control method according to claim 6, characterized in that, The determination of the third temperature correction value based on the actual outlet water temperature and the actual inlet water temperature includes one of the following: Calculate the inlet and outlet water temperature difference between the actual outlet water temperature and the actual inlet water temperature, and determine a third temperature correction value based on the inlet and outlet water temperature difference; Calculate the first temperature difference between the set required water temperature and the actual outlet water temperature, as well as the inlet and outlet water temperature differences of multiple sets of the actual outlet water temperature and the actual inlet water temperature. Determine the inlet and outlet water temperature difference change rate of the hydraulic module based on the multiple sets of inlet and outlet water temperature differences. Determine the third temperature correction value based on the first temperature difference and the inlet and outlet water temperature difference change rate.

8. The control method according to claim 7, characterized in that, The determination of the third temperature correction value based on the inlet and outlet water temperature difference includes one of the following: When the inlet and outlet water temperature difference is a set, if the inlet and outlet water temperature difference is less than or equal to the first preset temperature, the third temperature correction value is set to zero. When there are multiple sets of inlet and outlet water temperature differences, the target inlet and outlet water temperature difference with the smallest value is selected from the multiple sets of inlet and outlet water temperature differences. When the target inlet and outlet water temperature difference is less than or equal to the first preset temperature, the third temperature correction value is set to zero.

9. The control method according to claim 1, characterized in that, The minimum continuous operating time is obtained through the following steps: Obtain the outdoor ambient temperature; The minimum continuous operating time corresponding to the outdoor ambient temperature is determined based on the outdoor ambient temperature.

10. The control method according to claim 1, characterized in that, The control method further includes: When the compressor is shut down or the continuous running time is greater than or equal to the lower limit of continuous running time, the cumulative count is reset to zero.

11. The control method according to any one of claims 4 to 10, characterized in that, After determining the target condensate temperature based on the set required water temperature, the actual outlet water temperature, and the target correction value, the control method further includes: The temperature change of the actual condensing temperature and the frequency change of the compressor are obtained for at least one detection cycle; When the temperature change is less than or equal to the second preset temperature and the frequency change is less than or equal to the preset frequency, the target correction value is re-determined to correct and adjust the target condensation temperature. When the temperature change is greater than the second preset temperature or the frequency change is greater than the preset frequency, the target condensation temperature is maintained unchanged.

12. The control method according to claim 11, characterized in that, The detection cycle is determined through the following steps: Calculate the second temperature difference between the actual condensation temperature and the target condensation temperature; The detection cycle is determined based on the temperature change of the second temperature difference and the actual condensation temperature.

13. A controller, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, performs the control method as described in any one of claims 1 to 12.

14. A heat pump system, characterized in that, Includes the controller as described in claim 13.

15. A computer-readable storage medium, characterized in that: The device stores computer-executable instructions for performing the control method as described in any one of claims 1 to 12.

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