Heat pump water system, control method, controller and medium

Abstract

The embodiment of the invention provides a heat pump water system, a control method, a controller and a medium, which are applied to the technical field of heating, and the method comprises the following steps: in a floor heating drying mode, determining an initial target water temperature according to an obtained temperature parameter, and determining an operation duration according to the initial target water temperature and a preset initial highest drying temperature; for each heating stage, determining a first target water temperature, and controlling the heat pump water system to operate for an operation duration according to the first target water temperature until the first target water temperature is equal to the highest drying temperature; and for each cooling stage, a second target water temperature is determined, and the heat pump water system is controlled to operate for the operation duration according to the second target water temperature until the second target water temperature is equal to the lowest drying temperature. Due to the fact that floor heating drying can be achieved according to the collected temperature parameters and the target highest drying temperature only by setting the target highest drying temperature by the user, the user operation process is simplified, and the floor heating drying effect matched with the actual scene of the user is achieved.

Description

Technical Field

[0001] The present application relates to the field of heating technology, and in particular to a heat pump water system and control method, controller and medium. Background Art

[0002] In the relevant technology, current heat pump water machine floor heating drying systems generally adopt a segmented parameter configuration scheme, which mainly forms three technical paths: the first divides the drying process into three stages: heating, constant temperature, and cooling. It requires independent setting of four parameters: the drying operation time and the maximum drying target water temperature for each stage; the second uses the water supply temperature as the segmentation basis, and requires setting four setting parameters: the number of drying stages, the maintenance time of each drying target water temperature, the starting and ending target water temperatures of the drying process, and the change value of each target water temperature; the third divides the drying process into heating, constant temperature and cooling stages, and requires setting seven parameters: the target water temperature at the beginning of the heating stage and the end of the cooling stage, the maintenance time of each target water temperature, the change of adjacent target temperatures, the maximum drying target water temperature and the maintenance time. Therefore, the current segmented parameter configuration scheme requires too many parameters to be set, and most users are unfamiliar with the meaning of these parameters. Although the system uses preset default values, it is difficult for users to match energy-saving parameters based on actual application scenarios, resulting in disadvantages such as excessive drying time, high energy consumption, and poor drying effect. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a heat pump water system and control method, controller and medium, aiming to simplify the user operation process and achieve a floor heating drying effect that matches the user's actual scenario.

[0004] In a first aspect, an embodiment of the present application provides a control method for a heat pump water system, the heat pump water system comprising an outdoor unit, a hydraulic module, and at least one duct unit, the outdoor unit being connected to the hydraulic module and the duct unit; the method comprising:

[0005] In the floor heating drying mode, the target maximum drying temperature, the return air temperature of the ducted air conditioner, the ambient temperature and heat exchanger temperature of the outdoor unit, the initial water supply temperature, the initial return water temperature and the current water supply temperature of the hydraulic module are obtained;

[0006] determining an initial target water temperature in an initial stage according to the return air temperature, the ambient temperature, the heat exchanger temperature, the initial water supply temperature, and the initial return water temperature, and determining an operating time according to the initial target water temperature and a preset initial maximum drying temperature;

[0007] For each heating stage, determining a first target water temperature for each heating stage according to the current water supply temperature, the target maximum drying temperature, and the target water temperature of the previous stage, and controlling the heat pump water system to operate at the first target water temperature for the operating time until the first target water temperature is equal to the target maximum drying temperature;

[0008] For each cooling stage, the second target water temperature of each cooling stage is determined based on the water supply temperature of the previous stage and the preset minimum drying temperature, and the heat pump water system is controlled to operate according to the second target water temperature for the operating time until the second target water temperature is equal to the minimum drying temperature.

[0009] According to some embodiments of the present application, determining the initial target water temperature in the initial stage according to the return air temperature, the ambient temperature, the heat exchanger temperature, the initial water supply temperature, and the initial return water temperature includes:

[0010] The initial target water temperature is determined based on the return air temperature, the ambient temperature, the heat exchanger temperature, the initial water supply temperature, the initial return water temperature, the initial maximum drying temperature, the preset initial minimum drying temperature, the first preset temperature, the second preset temperature and the third preset temperature.

[0011] According to some embodiments of the present application, determining the initial target water temperature based on the return air temperature, the ambient temperature, the heat exchanger temperature, the initial water supply temperature, the initial return water temperature, the initial maximum drying temperature, the preset initial minimum drying temperature, the first preset temperature, the second preset temperature, and the third preset temperature includes:

[0012] When the number of the ducted air conditioner is one, a first sum value is calculated according to the return air temperature and the first preset temperature;

[0013] or,

[0014] When there are multiple ducted air conditioners, the first sum is calculated based on the minimum value of the multiple return air temperatures and the first preset temperature;

[0015] A second sum value is calculated based on the minimum value between the initial water supply temperature and the initial return water temperature and the second preset temperature;

[0016] Calculating a third sum value according to the minimum value between the ambient temperature and the heat exchanger temperature and the third preset temperature;

[0017] A target minimum value is obtained by comparing the maximum value among the first sum value, the second sum value, the third sum value and the initial minimum drying temperature with the minimum value of the initial maximum drying temperature, and the target minimum value is used as the initial target water temperature.

[0018] According to some embodiments of the present application, determining the running time according to the initial target water temperature and the preset initial maximum drying temperature includes:

[0019] The operating time is determined according to the initial maximum drying temperature, the initial target water temperature, the preset time and the fourth preset temperature.

[0020] According to some embodiments of the present application, determining the running time according to the initial maximum drying temperature, the initial target water temperature, the preset time, and the fourth preset temperature includes:

[0021] Calculating a first difference value according to the initial maximum drying temperature and the initial target water temperature;

[0022] Calculating a first quotient value according to the first difference and the fourth preset temperature;

[0023] Calculating a fourth sum value based on the first quotient value and a preset threshold;

[0024] A second quotient value is calculated based on the maximum value between the first quotient value and the preset duration and the fourth sum value, and the second quotient value is used as the running duration.

[0025] According to some embodiments of the present application, determining the first target water temperature of each heating stage according to the current water supply temperature, the target maximum drying temperature, and the target water temperature of the previous stage includes:

[0026] The first target water temperature of each heating stage is determined according to the current water supply temperature, the target maximum drying temperature, the target water temperature of the previous stage and the fifth preset temperature.

[0027] According to some embodiments of the present application, determining the first target water temperature of each heating stage according to the current water supply temperature, the target maximum drying temperature, the target water temperature of the previous stage, and the fifth preset temperature includes:

[0028] Calculating a fifth sum value according to the current water supply temperature and the fifth preset temperature;

[0029] Calculating a sixth sum value according to the target water temperature of the previous stage and the fifth preset temperature;

[0030] The minimum value among the fifth sum value, the sixth sum value and the target maximum drying temperature is used as the first target water temperature in the current stage.

[0031] According to some embodiments of the present application, determining the second target water temperature in each cooling stage according to the water supply temperature in the previous stage and the preset minimum drying temperature includes:

[0032] The second target water temperature of each cooling stage is determined according to the water supply temperature of the previous stage, the minimum drying temperature and the sixth preset temperature.

[0033] According to some embodiments of the present application, determining the second target water temperature in each cooling stage according to the water supply temperature in the previous stage, the minimum drying temperature, and the sixth preset temperature includes:

[0034] Obtaining a second difference value based on the water supply temperature in the previous stage and the sixth preset temperature;

[0035] The lowest value between the second difference and the lowest drying temperature is used as the second target water temperature in the current stage.

[0036] According to some embodiments of the present application, the method further includes:

[0037] Fault detection is performed on the outdoor unit, the hydraulic module and at least one of the duct units.

[0038] In a second aspect, an embodiment of the present application provides a controller comprising: 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 water system as described in the first aspect above when running the computer program.

[0039] In a third aspect, an embodiment of the present application provides a heat pump water system, comprising the controller as described in the second aspect.

[0040] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the control method of the heat pump water system as described in the first aspect above.

[0041] According to the technical solution of the embodiment of the present application, there are at least the following beneficial effects: the embodiment of the present application proposes a heat pump water system and control method, controller and medium, which are applied to the field of heating technology. The heat pump water system includes an outdoor unit, a hydraulic module and at least one duct unit, and the outdoor unit is connected to the hydraulic module and the duct unit; the method includes: in the floor heating drying mode, determining the initial target water temperature of the initial stage according to the obtained return air temperature, ambient temperature, heat exchanger temperature, initial water supply temperature and initial return water temperature, and determining the operating time according to the initial target water temperature and the preset initial maximum drying temperature; for each heating stage, determining the first target water temperature of each heating stage according to the current water supply temperature, the target maximum drying temperature and the target water temperature of the previous stage, and controlling the heat pump water system to operate according to the first target water temperature for the operating time until the first target water temperature is equal to the maximum drying temperature; for each cooling stage, determining the second target water temperature of each cooling stage according to the water supply temperature of the previous stage and the preset minimum drying temperature, and controlling the heat pump water system to operate according to the second target water temperature for the operating time until the second target water temperature is equal to the minimum drying temperature. Since the embodiment of the present application only requires the user to set the target maximum drying temperature, the user operation process can be simplified. Since the embodiment of the present application can achieve floor heating drying of the heat pump water system through the collected return air temperature, ambient temperature, heat exchanger temperature, initial water supply temperature, initial return water temperature and the target maximum drying temperature set by the user, the floor heating drying effect that matches the user's actual scenario can be achieved.

[0042] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are used to provide a further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0044] Figure 1 This is a schematic structural diagram of a heat pump water system provided by an embodiment of the present application;

[0045] Figure 2 This is a flow chart of a control method for a heat pump water system provided by one embodiment of the present application;

[0046] Figure 3 is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application;

[0047] Figure 4 is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application;

[0048] Figure 5is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application;

[0049] Figure 6 is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application;

[0050] Figure 7 is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application;

[0051] Figure 8 It is a structural diagram of a controller for executing a control method for a heat pump water system provided in one embodiment of the present application. DETAILED DESCRIPTION

[0052] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0053] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships 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, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0054] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0055] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0056] In some cases, current heat pump water-based floor heating drying systems generally adopt a segmented parameter configuration scheme, which mainly forms three technical paths: the first divides the drying process into three stages: heating, constant temperature, and cooling. It requires independent setting of four parameters: the drying operation duration and the maximum drying target water temperature for each stage; the second uses the water supply temperature as the segmentation basis, requiring the setting of four setting parameters: the number of drying stages, the duration of each drying target water temperature, the target water temperatures at the beginning and end of drying, and the change value of each target water temperature; the third divides the drying process into heating, constant temperature, and cooling stages. It requires the setting of seven parameters: the target water temperature at the beginning of the heating stage and the end of the cooling stage, the maintenance time of each target water temperature, the change value of adjacent target temperatures, the maximum drying target water temperature, and the maintenance time. Therefore, the current segmented parameter configuration scheme requires too many parameters to be set, and most users are unfamiliar with the meaning of these parameters. Although the system uses preset default values, it is difficult for users to match energy-saving parameters based on actual application scenarios, resulting in disadvantages such as excessive drying time, high energy consumption, and poor drying effect.

[0057] Based on the above situation, this application proposes a heat pump water system and control method, controller and medium, aiming to simplify the user's operation process and achieve a floor heating drying effect that matches the user's actual scenario.

[0058] The various embodiments of the heat pump water system of the present application are further described below in conjunction with the accompanying drawings.

[0059] like Figure 1 As shown, Figure 1 It is a structural diagram of a heat pump water system provided in one embodiment of the present application.

[0060] In one embodiment, the heat pump water system of the embodiment of the present application includes an outdoor unit 100, a hydraulic module 200, at least one duct unit 300 and a floor heater 400.

[0061] It can be understood that the outdoor unit 100 is connected to the hydraulic module 200 and the duct unit 300 , and the floor heating 400 is connected to the hydraulic module 200 .

[0062] It can be understood that the duct unit 300 of the present application is generally installed on the indoor roof, and the hydraulic module 200 converts the heat circulated back from the outdoor unit 100 into water to supply hot water to the user, so as to heat the indoor floor heating or radiator and other heat pump water system terminals.

[0063] It can be understood that the outdoor unit 100 includes: a compressor 110, a pressure sensor 120, a four-way reversing valve 130, a first fin heat exchanger 140, a fan (not shown in the figure), an electronic expansion valve 150, a stop valve 160 and a gas-liquid separator 170.

[0064] The gas-liquid separator is a core component in heat pump water systems to ensure efficient and stable operation of the system. By accurately separating the gas and liquid phases in water, it plays a key role in compressor protection, energy efficiency improvement, and system reliability. The following is an analysis of its specific functions in heat pump water systems:

[0065] Preventing liquid hammer and extending compressor life: When a heat pump water system is operating, if the compressor draws in partially evaporated liquid water or refrigerant, this can cause liquid hammer, damaging components like valves and pistons. The gas-liquid separator efficiently separates the gas-liquid mixture, ensuring that the compressor draws only gaseous media, fundamentally reducing the risk of equipment failure.

[0066] Optimize heat exchange efficiency: The separated liquid water or refrigerant can fully participate in the heat exchange process, avoiding the waste of heat energy caused by the liquid medium directly entering the compressor without evaporation.

[0067] Reduced operating energy consumption: The compression work of gaseous media is far less than that of liquid media, and the separator ensures that the compressor always operates at high efficiency. Tested data shows that heat pump systems equipped with high-quality gas-liquid separators can improve their average annual energy efficiency ratio (COP) by 12%, with particularly significant energy savings during part-load operation.

[0068] Reduced maintenance costs: Effective separation of liquid media prevents dilution of the compressor lubricant and bearing wear. The separator also intercepts impurities in the system, reducing the risk of heat exchanger scaling and extending equipment maintenance cycles by 1.5 times that of traditional systems.

[0069] Intelligent diagnostic assistance: The separator's operating status reflects system health. An abnormally high liquid level may indicate expansion valve failure or improper refrigerant charge, providing early warning for maintenance.

[0070] In short, through multi-dimensional optimization, the gas-liquid separator becomes a key guarantee for the efficient, stable, and low-maintenance operation of the heat pump water system. Regularly checking the separator pressure differential and cleaning the accumulated liquid can ensure its continued stable performance.

[0071] It can be understood that the hydraulic module 200 includes: a water-fluorine heat exchanger (not shown in the figure), an electronic expansion valve (not shown in the figure) and a water flow switch (not shown in the figure).

[0072] It can be understood that the water-fluorine heat exchanger can be a plate heat exchanger, a sleeve heat exchanger, or a shell and tube heat exchanger, and can be set according to actual needs. The embodiments of this application do not specifically limit it.

[0073] It can be understood that the air duct unit includes: a second fin heat exchanger (not shown in the figure), a motor (not shown in the figure), a wind wheel (not shown in the figure), an electronic expansion valve (not shown in the figure) and a thermostat (not shown in the figure).

[0074] Based on the heat pump water system of each of the above embodiments, the following respectively proposes each embodiment of the control method of the heat pump water system of the present application.

[0075] As Figure 2 shown, Figure 2 is a flow chart of the control method of the heat pump water system provided by an embodiment of the present application; the control method can be applied to the heat pump water system of the above embodiments, including but not limited to steps S210, S220, S230 and S240.

[0076] Step S210, in the heating and drying mode, obtaining the target maximum drying temperature, the return air temperature of the ducted air conditioner, the environment temperature of the outdoor unit, the heat exchanger temperature, the initial water supply temperature, the initial return water temperature and the current water supply temperature of the hydraulic module;

[0077] Step S220, determining the initial target water temperature of the initial stage according to the return air temperature, the environment temperature, the heat exchanger temperature, the initial water supply temperature and the initial return water temperature, and determining the running duration according to the initial target water temperature and the preset initial maximum drying temperature;

[0078] Step S230, for each temperature rising stage, determining the first target water temperature of each temperature rising stage according to the current water supply temperature, the target maximum drying temperature and the target water temperature of the last stage, and controlling the heat pump water system to run for the running duration according to the first target water temperature until the first target water temperature is equal to the target maximum drying temperature;

[0079] Step S240, for each temperature falling stage, determining the second target water temperature of each temperature falling stage according to the water supply temperature of the last stage and the preset minimum drying temperature, and controlling the heat pump water system to run for the running duration according to the second target water temperature until the second target water temperature is equal to the minimum drying temperature.

[0080] It can be understood that the target maximum drying temperature of the embodiment of the present application is set by the user according to the actual demand.

[0081] It can be understood that the initial maximum drying temperature described above is the control setting value of the heat pump water system, which does not need to be set by the user.

[0082] It can be understood that the determination of the target water temperature in each temperature rising stage and each temperature falling stage of the embodiment of the present application is controlled by taking the water supply temperature of the hydraulic module as the basis, so as to avoid the risk of unreasonable temperature setting causing damage to the floor heating in the case that the heat pump water system does not match the floor heating heat leakage situation.

[0083] It is worth noting that since the embodiment of the present application only requires the user to set the target maximum drying temperature, the user operation process can be simplified, and since the embodiment of the present application can achieve floor heating drying of the heat pump water system through the collected return air temperature, ambient temperature, heat exchanger temperature, initial water supply temperature, initial return water temperature and the target maximum drying temperature set by the user, it can achieve a floor heating drying effect that matches the user's actual scenario.

[0084] In addition, in one embodiment, the step S220 of "determining an initial target water temperature in the initial stage according to the return air temperature, the ambient temperature, the heat exchanger temperature, the initial supply water temperature, and the initial return water temperature" includes the following steps:

[0085] The initial target water temperature is determined based on the return air temperature, ambient temperature, heat exchanger temperature, initial water supply temperature, initial return water temperature, initial maximum drying temperature, preset initial minimum drying temperature, first preset temperature, second preset temperature and third preset temperature.

[0086] It can be understood that the above-mentioned first preset temperature, second preset temperature and third preset temperature are control setting values ​​of the heat pump water system and do not need to be set by the user.

[0087] It can be understood that the first preset temperature mentioned above can be the temperature difference relative to the return air temperature, and the embodiment of the present application does not specifically limit it.

[0088] It can be understood that the above-mentioned second preset temperature can be a temperature difference relative to the water temperature, and the embodiment of the present application does not specifically limit it.

[0089] It can be understood that the third preset temperature mentioned above can be the temperature difference relative to the outdoor temperature, and the embodiment of the present application does not specifically limit it.

[0090] like Figure 3 As shown, Figure 3 It is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application; regarding the above-mentioned step of "determining the initial target water temperature based on the return air temperature, ambient temperature, heat exchanger temperature, initial water supply temperature, initial return water temperature, initial maximum drying temperature, preset initial minimum drying temperature, first preset temperature, second preset temperature and third preset temperature", it includes but is not limited to step S310, step S320, step S330 and step S340.

[0091] Step S310: When the number of ducted air conditioners is one, a first sum value is calculated based on the return air temperature and the first preset temperature;

[0092] Step S320: Calculate a second sum value based on the minimum value between the initial water supply temperature and the initial return water temperature and the second preset temperature;

[0093] Step S330: Calculate a third sum value based on the minimum value between the ambient temperature and the heat exchanger temperature and the third preset temperature;

[0094] Step S340: Compare the maximum value among the first sum, the second sum, the third sum and the initial minimum drying temperature with the minimum value of the initial maximum drying temperature to obtain a target minimum value, and use the target minimum value as the initial target water temperature.

[0095] It is understandable that through the formula TWS 初 =MIN{MAX[T1 风 +△T1,MIN(TW 供 , TW 回 )+△T2,MIN(T 环 , T 翅 )+△T3,T 最小始 ], T 最大始 The initial target water temperature can be calculated, where TWS 初 is the initial target water temperature, T1 风 is the return air temperature, △T1 is the first preset temperature, TW 供 is the initial water supply temperature, TW 回 is the initial return water temperature, △T2 is the second preset temperature, T 环 is the ambient temperature, T 翅 is the heat exchanger temperature, △T3 is the third preset temperature, T 最小始 is the initial minimum drying temperature, T 最大始 It is the initial maximum drying temperature.

[0096] like Figure 4 As shown, Figure 4 It is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application; regarding the above-mentioned step of "determining the initial target water temperature based on the return air temperature, ambient temperature, heat exchanger temperature, initial water supply temperature, initial return water temperature, initial maximum drying temperature, preset initial minimum drying temperature, first preset temperature, second preset temperature and third preset temperature", it includes but is not limited to step S410, step S420, step S430 and step S440.

[0097] Step S410: When there are multiple ducted air conditioners, a first sum value is calculated based on the minimum value of multiple return air temperatures and a first preset temperature;

[0098] Step S420: Calculate a second sum value based on the minimum value between the initial water supply temperature and the initial return water temperature and the second preset temperature;

[0099] Step S430: Calculate a third sum value based on the minimum value between the ambient temperature and the heat exchanger temperature and the third preset temperature;

[0100] Step S440: Compare the maximum value among the first sum, the second sum, the third sum and the initial minimum drying temperature with the minimum value of the initial maximum drying temperature to obtain a target minimum value, and use the target minimum value as the initial target water temperature.

[0101] It is understandable that through the formula TWS 初 =MIN{MAx[MIN(T1 风1 , T1 风2 , ...T1 风n )+△T1,MIN(TW 供 , TW 回 )+△T2,MIN(T 环 , T 翅 )+△T3,T 最小始 ], T 最大始 The initial target water temperature can be calculated, where TWS 初 is the initial target water temperature, T1 风1 , T1 风2 , ...T1 风n is the return air temperature of multiple duct units, △T1 is the first preset temperature, TW 供 is the initial water supply temperature, TW 回 is the initial return water temperature, △T2 is the second preset temperature, T 环 is the ambient temperature, T 翅 is the heat exchanger temperature, △T3 is the third preset temperature, T 最小始 is the initial minimum drying temperature, T 最大始 It is the initial maximum drying temperature.

[0102] In addition, in one embodiment, the step S220 of "determining the running time according to the initial target water temperature and the preset initial maximum drying temperature" includes the following steps:

[0103] The operating time is determined according to the initial maximum drying temperature, the initial target water temperature, the preset time and the fourth preset temperature.

[0104] It can be understood that the above-mentioned preset time length and the fourth preset temperature are control setting values ​​of the heat pump water system and do not need to be set by the user.

[0105] It can be understood that the fourth preset temperature mentioned above can be the difference between adjacent target drying temperatures, and the embodiment of the present application does not specifically limit it.

[0106] like Figure 5 As shown, Figure 5It is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application; regarding the above-mentioned step of "determining the operating time based on the initial maximum drying temperature, the initial target water temperature, the preset time and the fourth preset temperature", it includes but is not limited to step S510, step S520, step S530 and step S540.

[0107] Step S510: Calculate a first difference value based on the initial maximum drying temperature and the initial target water temperature;

[0108] Step S520: Calculate a first quotient value based on the first difference and the fourth preset temperature;

[0109] Step S530: Calculate a fourth sum value based on the first quotient value and a preset threshold value;

[0110] Step S540: Calculate a second quotient value based on the maximum value between the first quotient value and the preset duration and the fourth sum value, and use the second quotient value as the running duration.

[0111] It can be understood that, by the formula t4=MAX[(T 最大始 -TWS 初 ) / △T4,t3] / [(T 最大始 -TWS 初 ) / △T4+1] can be used to calculate the running time, where t4 is the running time, T 最大始 is the initial maximum drying temperature, TWS 初 is the initial target water temperature, △T4 is the fourth preset temperature, and t3 is the preset time.

[0112] It can be understood that the above-mentioned preset threshold can be 1 and can be set according to actual needs. The embodiment of the present application does not specifically limit it.

[0113] It is understandable that after the operating time t4 is calculated, the embodiment of the present application will control the heat pump water system to operate according to the initial target drying temperature and continue to operate for the duration.

[0114] In addition, in one embodiment, the step S230 of "determining the first target water temperature of each heating stage according to the current water supply temperature, the target maximum drying temperature, and the target water temperature of the previous stage" includes the following steps:

[0115] The first target water temperature of each heating stage is determined according to the current water supply temperature, the target maximum drying temperature, the target water temperature of the previous stage and the fifth preset temperature.

[0116] It can be understood that the fifth preset temperature mentioned above can be the difference between adjacent target drying temperatures, which is the control setting value of the heat pump water system and does not need to be set by the user.

[0117] like Figure 6 As shown, Figure 6 It is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application; regarding the above-mentioned step of "determining the first target water temperature for each heating stage based on the current water supply temperature, the target maximum drying temperature, the target water temperature of the previous stage and the fifth preset temperature", it includes but is not limited to step S610, step S620 and step S630.

[0118] Step S610: Calculate a fifth sum value based on the current water supply temperature and the fifth preset temperature;

[0119] Step S620: Calculate a sixth sum value based on the target water temperature of the previous stage and the fifth preset temperature;

[0120] Step S630: The minimum value among the fifth sum value, the sixth sum value and the target maximum drying temperature is used as the first target water temperature of the current stage.

[0121] It can be understood that when determining the first target water temperature of the first stage, the target water temperature of the previous stage is the initial target water temperature; when determining the first target water temperature of the second stage, the target water temperature of the previous stage is the first target water temperature of the first stage, and so on, until the first target water temperature is equal to the target maximum drying temperature, and the heat pump water system is controlled to operate continuously at the maximum drying temperature.

[0122] It can be understood that the first target water temperature in the first stage is obtained by the formula TWS1=MIN(TWS 供′ +△T5, TWS 上限 , TWS 初 +△T5) is calculated, where TWS1 is the first target water temperature in the first stage, TW 供′ is the current water supply temperature, △T5 is the fifth preset temperature, TWS 上限 The target maximum drying temperature, TWS 初 is the initial target water temperature.

[0123] It can be understood that the first target water temperature in the second stage is obtained by the formula TWS2=MIN(TWS 供′ +△T5, TWS 上限 , TWS1+△T5) is calculated, where TWS2 is the first target water temperature in the second stage, TW 供′ is the current water supply temperature, △T5 is the fifth preset temperature, TWS 上限 is the target maximum drying temperature, and TWS1 is the first target water temperature in the first stage.

[0124] It can be understood that the first target water temperature in the nth stage is obtained by the formula TWS n=MIN(TW 供′ +△T5, TWS 上限 , TWS n-1 +△T5) is calculated, where TWS n is the first target water temperature in stage n, TW 供′ is the current water supply temperature, △T5 is the fifth preset temperature, TWS 上限 The target maximum drying temperature, TWS n-1 is the first target water temperature in stage n-1.

[0125] In addition, in one embodiment, the step S240 of "determining the second target water temperature for each cooling stage according to the water supply temperature in the previous stage and the preset minimum drying temperature" includes the following steps:

[0126] The second target water temperature of each cooling stage is determined based on the water supply temperature of the previous stage, the minimum drying temperature and the sixth preset temperature.

[0127] It can be understood that the above-mentioned minimum drying temperature and the sixth preset temperature are control setting values ​​of the heat pump water system and do not need to be set by the user.

[0128] It can be understood that the sixth preset temperature mentioned above can be the difference between each set temperature after the drying operation reaches the upper limit temperature and the drying water supply temperature, and the embodiment of the present application does not make any specific limitation on it.

[0129] like Figure 7 As shown, Figure 7 It is a flow chart of a control method for a heat pump water system provided by another embodiment of the present application; regarding the above-mentioned step of "determining the second target water temperature for each cooling stage based on the water supply temperature, the minimum drying temperature and the sixth preset temperature in the previous stage", it includes but is not limited to step S710 and step S720.

[0130] Step S710: obtaining a second difference value based on the water supply temperature in the previous stage and the sixth preset temperature;

[0131] Step S720: The lowest value between the second difference and the lowest drying temperature is used as the second target water temperature in the current stage.

[0132] It can be understood that for the first stage of the cooling stage, the water supply temperature of the previous stage is the target maximum drying temperature, and for the second stage of the cooling stage, the water supply temperature of the previous stage is the water supply temperature of the first stage, and so on, until the second target water temperature is equal to the minimum drying temperature, and the heat pump water system is controlled to operate at the minimum drying temperature for a continuous running time.

[0133] It is understandable that the second target water temperature in the first stage is expressed by the formula MIN(TWS上限 -△T6, TWS 下限 ) is calculated, where TWS 上限 The target maximum drying temperature, TWS 下限 This is the lowest drying temperature.

[0134] It is understandable that the second target water temperature in the second stage is expressed by the formula MIN(TWS 供1 -△T6, TWS 下限 ) is calculated, where TWS 供1 is the water supply temperature of the first stage, TWS 下限 This is the lowest drying temperature.

[0135] It can be understood that the second target water temperature in the nth stage is obtained by the formula MIN(TWS 供n-1 -△T6, TWS 下限 ) is calculated, where TWS 供n-1 is the water supply temperature of the n-1 stage, TWS 下限 This is the lowest drying temperature.

[0136] In addition, in one embodiment, the embodiment of the present application further includes: performing fault detection on the outdoor unit, the hydraulic module and at least one duct unit.

[0137] It can be understood that the embodiment of the present application turns on the floor heating drying function through the floor heating drying heating controller. After receiving the floor heating drying start command, the outdoor unit, hydraulic module and duct machine are controlled as follows: the outdoor unit is turned off and only the fan is turned on (all other components of the outdoor unit are turned off), and it is detected that there is no fault; the hydraulic module only controls the water pump in the heating circulation loop to start and perform flow monitoring and judgment after time t1 (all other components of the hydraulic module are turned off), and detects that the unit has no fault; all duct machines are connected and only the fan is turned on and fault detection is performed (all other components of the duct machine are turned off), and it is turned off after running time t2.

[0138] It can be understood that the above-mentioned time t1 and time t2 can be set according to actual needs, and the embodiments of the present application do not specifically limit them.

[0139] Based on the control methods of the heat pump water system of each of the above embodiments, overall embodiments of the control methods of the heat pump water system of the present application are respectively proposed below.

[0140] (1) The floor heating drying function is turned on by the floor heating drying heating controller. After receiving the floor heating drying start command, the outdoor unit, hydraulic module and duct unit are controlled as follows: the outdoor unit is turned off and only the fan is turned on (all other components of the outdoor unit are turned off), and it is detected that there is no fault; the hydraulic module only controls the water pump in the heating circulation loop to start and perform flow monitoring and judgment after time t1 (all other components of the hydraulic module are turned off), and detects that the unit has no fault; all duct units are connected and only the fan is turned on and a fault detection is performed (all other components of the duct units are turned off), and it is turned off after running time t2.

[0141] (2) Step (1) is run without any downtime. After the water pump controlled by the hydraulic module has been running for t3 time, relevant temperature is collected and the initial target water temperature of the drying operation is determined. The specific determination formula is as follows:

[0142] TWS 初 =MIN{MAX[MIN(T1 风1 , T1 风2 , ...T1 风n )+△T1,MIN(TW 供 , TW 回 )+△T2,MIN(T 环 , T 翅 )+△T3,T 最小始 ], T 最大始};

[0143] Among them, TWS 初 is the initial target water temperature, T1 风1 , T1 风2 , ...T1 风n is the return air temperature of multiple duct units, △T1 is the first preset temperature, TW 供 is the initial water supply temperature, TW 回 is the initial return water temperature, △T2 is the second preset temperature, T 环 is the ambient temperature, T 翅 is the heat exchanger temperature, △T3 is the third preset temperature, T 最小始 is the initial minimum drying temperature, T 最大始 It is the initial maximum drying temperature.

[0144] (3) After step (2) is completed, the initial target water temperature of the drying operation is obtained. Then, as needed, the duration t4 of each target drying temperature control operation is calculated within a specific time t0. The operation duration calculation formula is as follows:

[0145] t4=MAX[(T 最大始 -TWS 初 ) / △T4,t3] / [(T 最大始 -TWS初 ) / △T4+1];

[0146] wherein, t4 is the running time, T 最大始 is the initial maximum drying temperature, TWS 初 is the initial target water temperature, △T4 is the fourth preset temperature, and t3 is the preset time.

[0147] calculated value (T 最大始 -TWS 初 ) / △T4, and the calculated running time t4 are all rounded up by the next integer.

[0148] It can be understood that the specific time t0 mentioned above can be the shortest time for drying maintenance at the initial maximum drying temperature, and embodiments of the present application do not make specific limitations thereon.

[0149] (4) After the running time t4 is calculated in step (3), the hydraulic module controls and runs continuously for the running time t4 with the initial target water temperature as the set temperature.

[0150] (5) After the running in step (4) is completed, for the temperature rising stage, the first target water temperature of the first stage is calculated by the formula TWS1=MIN(TW 供′ +△T5, TWS 上限 , TWS 初 +△T5), and is controlled to run continuously for the running time t4, wherein TWS1 is the first target water temperature of the first stage, TW 供′ is the current water supply temperature, △T5 is the fifth preset temperature, TWS 上限 is the target maximum drying temperature, and TWS 初 is the initial target water temperature; the first target water temperature of the second stage is calculated by the formula TWS2=MIN(TW 供′ +△T5, TWS 上限 , TWS1+△T5), and is controlled to run continuously for the running time t4, wherein TWS2 is the first target water temperature of the second stage, TW 供′ is the current water supply temperature, △T5 is the fifth preset temperature, TWS 上限 is the target maximum drying temperature, and TWS1 is the first target water temperature of the first stage; the first target water temperature of the nth stage is calculated by the formula TWS n =MIN(TW 供′ +△T5, TWS 上限 , TWS n-1 +△T5), and is controlled to run continuously for the running time t4, wherein TWS n is the first target water temperature of the nth stage, TW 供′ is the current water supply temperature, △T5 is the fifth preset temperature, TWS 上限The target maximum drying temperature, TWS n-1 is the first target water temperature in stage n-1.

[0151] (6) Repeat step (5) until the actual drying water supply temperature maintains the target maximum drying temperature for a continuous operation time.

[0152] (7) After step (6) is completed, for the cooling stage, the second target water temperature of the first stage is calculated by the formula MIN(TWS 上限 -△T6, TWS 下限 ) is calculated and controlled to run for a duration of t4, where TWS 上限 The target maximum drying temperature, TWS 下限 The second target water temperature in the second stage is calculated by the formula MIN(TWS 供1 -△T6, TWS 下限 ) is calculated and controlled to run for a duration of t4, where TWS 供1 is the water supply temperature of the first stage, TWS 下限 The second target water temperature of the nth stage is calculated by the formula MIN(TWS 供n-1 -△T6, TWS 下限 ) is calculated and controlled to run for a duration of t4, where TWS 供n-1 is the water supply temperature in stage n-1, TWS 下限 This is the lowest drying temperature.

[0153] (8) Repeat step (7) until the set minimum drying temperature is maintained for a continuous operation time t4, and then the drying operation is terminated.

[0154] It is worth noting that since the embodiment of the present application only requires the user to set the target maximum drying temperature, the user operation process can be simplified, and since the embodiment of the present application can realize floor heating drying of the heat pump water system through the collected return air temperature, ambient temperature, heat exchanger temperature, initial water supply temperature and initial return water temperature, the system set temperature parameters and the user set target maximum drying temperature, it can achieve a floor heating drying effect that matches the user's actual scenario.

[0155] It is worth noting that this application does not require the user to set the drying parameters through the internal control logic of the unit (such as the various calculations in the principle description above), and is easy to operate; this application effectively utilizes the unit information, can accurately reflect the environmental parameters of the floor heating usage range, and controls the drying according to the room environmental parameters, so that the drying operation is more matched with the floor heating area; in addition, the target temperature set each time in this application is controlled based on the actual water supply temperature of the floor heating, avoiding the risk of damage to the floor heating due to unreasonable temperature setting when the unit does not match the heat leakage of the floor heating.

[0156] Based on the control method of the heat pump water system of each of the above embodiments, the following respectively proposes each embodiment of the controller, the heat pump water system and the computer readable storage medium of the present application.

[0157] As Figure 8 shown, Figure 8 is a structural schematic diagram of a controller for executing the control method of the heat pump water system provided by an embodiment of the present application. The controller 700 implemented by the present application comprises a processor 710, a memory 720 and a computer program stored in the memory 720 and executable on the processor 710, wherein, Figure 8 In the embodiment, one processor 710 and one memory 720 are taken as an example.

[0158] The processor 710 and the memory 720 can be connected through a bus or other means, Figure 8 In the embodiment, the connection through the bus is taken as an example.

[0159] The memory 720 is a kind of non-transient computer readable storage medium, which can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory 720 can include high-speed random access memory, and can also include non-transient memory, such as at least one magnetic disk storage device, flash memory device, or other non-transient solid-state memory device. In some embodiments, the memory 720 can optionally include a memory 720 remotely arranged relative to the processor 710, and these remote memories 720 can be connected to the controller 700 through a network. Examples of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0160] Those skilled in the art can understand that Figure 8 the device structure shown in the embodiment does not constitute a limitation on the controller 700, and can include more or less components than those shown in the figure, or combine certain components, or different component arrangements.

[0161] In Figure 8 the controller 700 shown in the figure, the processor 710 can be used to call the control program stored in the memory 720, so as to realize the above-mentioned control method. Specifically, the non-transient software programs and instructions required to realize the control method of the above-mentioned embodiments are stored in the memory 720, and when executed by the processor 710, the control method of the above-mentioned embodiments is executed.

[0162] It is worth noting that since the controller 700 of the embodiment of the present application can execute the control method of any one of the above embodiments, the specific implementation and technical effects of the controller 700 of the embodiment of the present application can be referred to the specific implementation and technical effects of the control method of any one of the above embodiments.

[0163] In addition, an embodiment of the present application further provides a heat pump water system, which includes the controller of the above embodiment.

[0164] It is worth noting that since the heat pump water system of the embodiment of the present application includes the controller of the above embodiment, and the controller of the above embodiment can execute the control method of the heat pump water system of any of the above embodiments, the specific implementation methods and technical effects of the heat pump water system of the embodiment of the present application can refer to the specific implementation methods and technical effects of the control method of the heat pump water system of any of the above embodiments.

[0165] In addition, an embodiment of the present application further provides a computer-readable storage medium, which stores computer-executable instructions, and the computer-executable instructions are used to execute the above-described control method. Figures 2 to 7 The method steps in .

[0166] It is worth noting that since the computer-readable storage medium of the embodiment of the present application can execute the control method of any of the above embodiments, the specific implementation methods and technical effects of the computer-readable storage medium of the embodiment of the present application can refer to the specific implementation methods and technical effects of the control method of any of the above embodiments.

[0167] Those skilled in the art will appreciate that all or some of the steps and systems in the method disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include computer storage media (or non-transitory media) and communication media (or temporary media). As known to those skilled in the art, the term computer storage media is included in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data) and is volatile and non-volatile, removable, and non-removable. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory, or other memory technology, CD-ROM, digital versatile disks (DVD), or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage, or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically includes computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0168] The above is a specific description of the preferred embodiments of the present application, but the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A control method for a heat pump water system, characterized in that: The heat pump water system includes an outdoor unit, a hydraulic module and at least one duct unit, wherein the outdoor unit is connected to the hydraulic module and the duct unit; the method includes: In the floor heating drying mode, the target maximum drying temperature, the return air temperature of the ducted air conditioner, the ambient temperature and heat exchanger temperature of the outdoor unit, the initial water supply temperature, the initial return water temperature and the current water supply temperature of the hydraulic module are obtained; determining an initial target water temperature in an initial stage according to the return air temperature, the ambient temperature, the heat exchanger temperature, the initial water supply temperature, and the initial return water temperature, and determining an operating time according to the initial target water temperature and a preset initial maximum drying temperature; For each heating stage, determining a first target water temperature for each heating stage according to the current water supply temperature, the target maximum drying temperature, and the target water temperature of the previous stage, and controlling the heat pump water system to operate at the first target water temperature for the operating time until the first target water temperature is equal to the target maximum drying temperature; For each cooling stage, the second target water temperature of each cooling stage is determined based on the water supply temperature of the previous stage and the preset minimum drying temperature, and the heat pump water system is controlled to operate according to the second target water temperature for the operating time until the second target water temperature is equal to the minimum drying temperature.

2. The method according to claim 1, characterized in that The determining of the initial target water temperature in the initial stage according to the return air temperature, the ambient temperature, the heat exchanger temperature, the initial water supply temperature, and the initial return water temperature includes: The initial target water temperature is determined based on the return air temperature, the ambient temperature, the heat exchanger temperature, the initial water supply temperature, the initial return water temperature, the initial maximum drying temperature, the preset initial minimum drying temperature, the first preset temperature, the second preset temperature and the third preset temperature.

3. The method according to claim 2, characterized in that The determining of the initial target water temperature according to the return air temperature, the ambient temperature, the heat exchanger temperature, the initial water supply temperature, the initial return water temperature, the initial maximum drying temperature, the preset initial minimum drying temperature, the first preset temperature, the second preset temperature, and the third preset temperature includes: When the number of the ducted air conditioner is one, a first sum value is calculated according to the return air temperature and the first preset temperature; or, When there are multiple ducted air conditioners, the first sum is calculated based on the minimum value of the multiple return air temperatures and the first preset temperature; A second sum value is calculated based on the minimum value between the initial water supply temperature and the initial return water temperature and the second preset temperature; Calculating a third sum value according to the minimum value between the ambient temperature and the heat exchanger temperature and the third preset temperature; A target minimum value is obtained by comparing the maximum value among the first sum value, the second sum value, the third sum value and the initial minimum drying temperature with the minimum value of the initial maximum drying temperature, and the target minimum value is used as the initial target water temperature.

4. The method according to claim 1, wherein The determining of the running time according to the initial target water temperature and the preset initial maximum drying temperature includes: The operating time is determined according to the initial maximum drying temperature, the initial target water temperature, the preset time and the fourth preset temperature.

5. The method according to claim 4, characterized in that The determining of the running time according to the initial maximum drying temperature, the initial target water temperature, the preset time and the fourth preset temperature includes: Calculating a first difference value according to the initial maximum drying temperature and the initial target water temperature; Calculating a first quotient value according to the first difference and the fourth preset temperature; Calculating a fourth sum value based on the first quotient value and a preset threshold; A second quotient value is calculated based on the maximum value between the first quotient value and the preset duration and the fourth sum value, and the second quotient value is used as the running duration.

6. The method according to claim 1, characterized in that The determining of the first target water temperature of each heating stage according to the current water supply temperature, the target maximum drying temperature, and the target water temperature of the previous stage includes: The first target water temperature of each heating stage is determined according to the current water supply temperature, the target maximum drying temperature, the target water temperature of the previous stage and the fifth preset temperature.

7. The method according to claim 6, characterized in that The first target water temperature of each heating stage is determined according to the current water supply temperature, the target maximum drying temperature, the target water temperature of the previous stage, and the fifth preset temperature, including: Calculating a fifth sum value according to the current water supply temperature and the fifth preset temperature; Calculating a sixth sum value according to the target water temperature of the previous stage and the fifth preset temperature; The minimum value among the fifth sum value, the sixth sum value and the target maximum drying temperature is used as the first target water temperature in the current stage.

8. The method according to claim 1, characterized in that The step of determining the second target water temperature in each cooling stage according to the water supply temperature in the previous stage and the preset minimum drying temperature includes: The second target water temperature of each cooling stage is determined according to the water supply temperature of the previous stage, the minimum drying temperature and the sixth preset temperature.

9. The method according to claim 8, characterized in that The determining of the second target water temperature in each cooling stage according to the water supply temperature in the previous stage, the minimum drying temperature and the sixth preset temperature includes: Obtaining a second difference value based on the water supply temperature in the previous stage and the sixth preset temperature; The lowest value between the second difference and the lowest drying temperature is used as the second target water temperature in the current stage.

10. The method according to claim 1, characterized in that The method further comprises: Fault detection is performed on the outdoor unit, the hydraulic module and at least one of the duct units.

11. 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 executes the control method for the heat pump water system according to any one of claims 1 to 10 when executing the computer program.

12. A heat pump water system, characterized in that: Comprising the controller of claim 11.

13. A computer-readable storage medium, characterized in that: Computer-executable instructions are stored, and the computer-executable instructions are used to execute the control method of the heat pump water system according to any one of claims 1 to 10.

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