Heat pump water heater control method, device and equipment and storage medium

Abstract

The invention provides a heat pump water heater control method, device and equipment and a storage medium, and the method comprises the steps that a heat pump water heater control request for a target heat pump water heater is responded, and the target set temperature and the heat pump operation temperature of the target heat pump water heater are obtained; a target heat pump control strategy of the target heat pump water heater is determined according to the water tank temperature, the return water temperature and the heat pump refrigerant pipe temperature in the heat pump operation temperature and a target energy efficiency model; and according to the target heat pump control strategy, heat pump operation parameters of the target heat pump water heater are adjusted, and a target heat pump control result is obtained. According to the technical scheme, the target heat pump water heater can be driven to be in the appropriate operation interval during operation, so that the operation energy efficiency of the target heat pump water heater is improved, and the energy-saving effect of the target heat pump water heater is improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat pump water heater control, and in particular to a heat pump water heater control method, device, equipment and storage medium. Background Art

[0002] At present, with the rapid development of fields such as heat pump water heaters, existing heat pumps can connect multiple water heaters in parallel to quickly adjust the water medium and / or air medium to the target temperature to meet the user's water demand and temperature adjustment needs. However, the existing heat pump water heaters have poor heating efficiency when heating quickly, resulting in a large amount of energy consumption when the heat pump water heaters are performing rapid heating and temperature control, and the energy saving effect is poor. Summary of the invention

[0003] The embodiments of the present application provide a heat pump water heater control method, device, equipment and storage medium, which are intended to solve the technical problem in the prior art that the heat pump water heater has a poor energy-saving effect during operation.

[0004] On the one hand, an embodiment of the present application provides a heat pump water heater control method, the heat pump water heater control method comprising the following steps:

[0005] In response to a heat pump water heater control request for a target heat pump water heater, obtaining a target set temperature and a heat pump operating temperature of the target heat pump water heater;

[0006] Determine the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature;

[0007] The heat pump operating parameters of the target heat pump water heater are adjusted according to the target heat pump control strategy to obtain a target heat pump control result.

[0008] In a possible implementation of the present application, determining the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature includes:

[0009] Obtaining the water tank temperature, return water temperature and heat pump refrigerant pipe temperature in the heat pump operating temperature;

[0010] Calculating a first temperature difference between the water tank temperature and the heat pump refrigerant pipe temperature;

[0011] A target heat pump control strategy for the target heat pump water heater is determined according to the first temperature difference, the return water temperature and the target energy efficiency model.

[0012] In a possible implementation of the present application, determining a target heat pump control strategy of the target heat pump water heater according to the first temperature difference, the return water temperature and the target energy efficiency model includes:

[0013] If the first temperature difference is less than a first temperature difference threshold, and the return water temperature is greater than a first temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a high-efficiency heating mode;

[0014] A first control strategy corresponding to the high-efficiency heating mode in the target energy efficiency model is obtained, and the first control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

[0015] In a possible implementation of the present application, determining the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature includes:

[0016] Obtaining the return water temperature in the heat pump operating temperature;

[0017] If the return water temperature is less than the first temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a low-efficiency heating mode;

[0018] A second control strategy corresponding to the low-efficiency heating mode in the target energy efficiency model is obtained, and the second control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

[0019] In a possible implementation of the present application, determining the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature includes:

[0020] Obtaining the water tank temperature in the heat pump operating temperature and the target setting temperature corresponding to the target heat pump water heater;

[0021] calculating a second temperature difference between the target set temperature and the water tank temperature;

[0022] If the second temperature difference is less than or equal to a second temperature difference threshold, determining that the heat pump operation mode of the target heat pump water heater is a low demand mode;

[0023] A third control strategy corresponding to the low demand mode in the target energy efficiency model is obtained, and the third control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

[0024] In a possible implementation of the present application, determining the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature includes:

[0025] Obtaining the return water temperature in the heat pump operating temperature;

[0026] If the return water temperature is lower than a second temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a defrost control mode;

[0027] A fourth control strategy corresponding to the defrost control mode in the target energy efficiency model is obtained, and the fourth control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

[0028] In a possible implementation of the present application, adjusting the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy includes:

[0029] If the target heat pump control strategy is the first control strategy, the heat pump two-way valve in the target heat pump water heater is opened to drive the target heat pump water heater to connect to the target water tank;

[0030] If the target heat pump control strategy is the second control strategy, reducing the heat pump operating frequency in the heat pump operating parameters of the target heat pump water heater and the target valve opening in the heat pump operating parameters according to the target energy efficiency model;

[0031] If the target heat pump control strategy is the third control strategy, reducing the target valve opening in the heat pump operating parameters of the target heat pump water heater according to the target energy efficiency model;

[0032] If the target heat pump control strategy is the fourth control strategy, the heat pump two-way valve in the target water heater is closed.

[0033] On the other hand, the present application provides a heat pump water heater control device, the heat pump water heater control device comprising:

[0034] a temperature acquisition module configured to respond to a heat pump water heater control request for a target heat pump water heater and acquire a target set temperature and a heat pump operating temperature of the target heat pump water heater;

[0035] A strategy generation module is configured to determine a target heat pump control strategy for the target heat pump water heater according to a water tank temperature, a return water temperature, a heat pump refrigerant pipe temperature and a target energy efficiency model in the heat pump operating temperature;

[0036] The heat pump control module is configured to adjust the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy to obtain a target heat pump control result.

[0037] On the other hand, the present application also provides a heat pump water heater control device, the heat pump water heater control device comprising:

[0038] one or more processors;

[0039] Memory; and

[0040] One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the steps of the heat pump water heater control method.

[0041] On the other hand, the present application also provides a computer-readable storage medium on which a computer program is stored. The computer program is loaded by a processor to execute the steps in the heat pump water heater control method.

[0042] In the present application, the target setting temperature and heat pump operating temperature of the target heat pump water heater are obtained by responding to the heat pump water heater control request for the target heat pump water heater; the target heat pump control strategy of the target heat pump water heater is determined according to the water tank temperature, return water temperature, heat pump refrigerant pipe temperature and target energy efficiency model in the heat pump operating temperature; the heat pump operating parameters of the target heat pump water heater are adjusted according to the target heat pump control strategy to obtain the target heat pump control result. The target setting temperature and heat pump operating temperature of the target heat pump water heater are obtained, and the heat pump operating state of the target heat pump water heater is accurately judged according to the target setting temperature, heat pump operating temperature and target energy efficiency model, and then the target heat pump control strategy corresponding to the heat pump operating state is generated, and the heat pump operating parameters of the target heat pump water heater are adjusted by the target heat pump control strategy, so as to achieve driving the target heat pump water heater to be in a suitable operating range during operation, thereby improving the operating energy efficiency of the target heat pump water heater and improving the energy saving effect of the target heat pump water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 A schematic diagram of a scenario of a heat pump water heater control method according to an embodiment of the present application;

[0045] Figure 2 This is a flow chart of an embodiment of a heat pump water heater control method in an embodiment of the present application;

[0046] Figure 3 A schematic diagram of a scenario of an embodiment of a heat pump water heater control method provided in an embodiment of the present application;

[0047] Figure 4 A flow chart of an embodiment corresponding to a high-efficiency heating mode in a target energy efficiency model in a heat pump water heater control method provided in an embodiment of the present application;

[0048] Figure 5 A schematic diagram of the structure of an embodiment of a heat pump water heater control device provided in an embodiment of the present application;

[0049] Figure 6 It is a schematic diagram of the structure of an embodiment of a heat pump water heater control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0052] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the invention can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0053] At present, with the rapid development of fields such as heat pump water heaters, existing heat pumps can connect multiple water heaters in parallel to quickly adjust the water medium and / or air medium to the target temperature to meet the user's water demand and temperature adjustment needs. However, the existing heat pump water heaters have poor heating efficiency when heating quickly, resulting in a large amount of energy consumption when the heat pump water heaters are performing rapid heating and temperature control, and the energy saving effect is poor.

[0054] Based on this, the present application proposes a heat pump water heater control method, device, equipment and computer-readable storage medium to solve the technical problem in the prior art that the heat pump water heater has a poor energy-saving effect during operation.

[0055] The heat pump water heater control method in the embodiment of the present invention is applied to a heat pump water heater control device, and the heat pump water heater control device is arranged in the heat pump water heater control device, and the heat pump water heater control device is provided with one or more processors, memories, and one or more applications, wherein the one or more applications are stored in the memories and are configured to be executed by the processor to implement the heat pump water heater control method; wherein the heat pump water heater control device can be an intelligent terminal connected to the target heat pump water heater for communication, such as a mobile phone, a tablet computer, a network device, and a smart computer; optionally, the heat pump water heater control device can be a main control module in the target heat pump water heater.

[0056] like Figure 1 As shown, Figure 1This is a schematic diagram of a scenario of a heat pump water heater control method according to an embodiment of the present application. The heat pump water heater control scenario in the embodiment of the present invention includes a heat pump water heater control device 100 (a heat pump water heater control device is integrated in the heat pump water heater control device 100) and a target heat pump device 200. A computer-readable storage medium corresponding to the heat pump water heater control method is run in the heat pump water heater control device 100 to execute the steps of the heat pump water heater control method. The target heat pump device 200 is a heat pump water heater that is communicatively connected to the heat pump water heater control device 100 and can execute the control instructions of the heat pump water heater control device 100.

[0057] Understandably, Figure 1 The heat pump water heater control equipment in the heat pump water heater control method scenario shown, or the devices included in the heat pump water heater control equipment, does not constitute a limitation on the embodiments of the present invention, that is, the number of devices and types of devices of the heat pump water heater control equipment included in the heat pump water heater control method scenario, or the number of devices and types of devices included in each device do not affect the overall implementation of the technical solution in the embodiments of the present invention, and can all be regarded as equivalent replacements or derivatives of the technical solution claimed to be protected in the embodiments of the present invention.

[0058] The heat pump water heater control device 100 in the embodiment of the present invention is mainly used to: respond to a heat pump water heater control request for a target heat pump water heater, and obtain a target set temperature and a heat pump operating temperature of the target heat pump water heater;

[0059] Determine the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature;

[0060] The heat pump operating parameters of the target heat pump water heater are adjusted according to the target heat pump control strategy to obtain a target heat pump control result.

[0061] The heat pump water heater control device 100 in the embodiment of the present invention can be an independent heat pump water heater control device, such as a smart terminal such as a mobile phone, tablet computer, network equipment, server and smart computer that is connected to the target heat pump water heater for communication, or it can be the main control module of the target heat pump water heater.

[0062] The embodiments of the present application provide a heat pump water heater control method, device, equipment and computer-readable storage medium, which are described in detail below.

[0063] It can be understood by those skilled in the art that Figure 1 The application environment shown in is only one of the application scenarios related to the present application solution and does not constitute a limitation on the application scenario of the present application solution. Other application environments may also include Figure 1More or fewer heat pump water heater control devices shown, or heat pump water heater control network connection relationships, such as Figure 1 Only one heat pump water heater control device is shown. It can be understood that the scenario of the heat pump water heater control method can also include one or more heat pump water heater control devices, which are not specifically limited here; the heat pump water heater control device 100 can also include a memory for storing temperature data and other data.

[0064] It should be noted that Figure 1 The scenario diagram of the heat pump water heater control method shown is only an example. The scenario of the heat pump water heater control method described in the embodiment of the present invention is to more clearly illustrate the technical solution of the embodiment of the present invention, and does not constitute a limitation on the technical solution provided by the embodiment of the present invention.

[0065] Based on the scenario of the above heat pump water heater control method, various embodiments of the heat pump water heater control method disclosed in the present invention are proposed.

[0066] like Figure 2 As shown, Figure 2 This is a flow chart of an embodiment of a heat pump water heater control method in an embodiment of the present application. The heat pump water heater control method includes the following steps 201 to 203:

[0067] 201. Responding to a heat pump water heater control request for a target heat pump water heater, obtaining a target set temperature and a heat pump operating temperature of the target heat pump water heater;

[0068] The heat pump water heater control method in this embodiment is applied to a heat pump water heater control device, and the type and quantity of the heat pump water heater control device are not specifically limited, that is, the heat pump water heater control device is a main control module of a target heat pump water heater, and the heat pump water heater control device is connected in parallel to multiple heat pump water heaters. In addition, the heat pump water heater control device can also be a smart terminal such as a mobile phone, a tablet computer, a network device, a server, and a smart computer that is connected to each target heat pump water heater for communication.

[0069] Optional, such as Figure 3 As shown, Figure 3 A schematic diagram of a scenario of an embodiment of a heat pump water heater control method provided in an embodiment of the present application. Figure 3 In the illustrated embodiment, the heat pump water heater control device is a hot water control device in the heat pump water heater system, and water heater 1, water heater 2 and water heater 3 are target heat pump water heaters in the heat pump water heater system. The heat pump water heater control device is connected in parallel to multiple target heat pump water heaters, and the water inlet water path of each target heat pump water heater controls the water flow through a valve.

[0070] Specifically, during operation, the heat pump water heater control device responds to a heat pump water heater control request for a target heat pump water heater of the heat pump water heater system, wherein the heat pump water heater control request is an operation event that drives the heat pump water heater control device to adjust the operating parameters of the target heat pump water heater, thereby improving the operating energy efficiency of the target heat pump water heater. Optionally, the triggering method of the heat pump water heater control request is not specifically limited here, that is, the heat pump water heater control request can be actively triggered by the user, for example, the user actively triggers the heat pump water heater control request for the target heat pump water heater by clicking a heat pump energy efficiency control button on the heat pump water heater control device or a heat pump energy efficiency control button of a remote control device that is connected to the heat pump water heater control device. In addition, the heat pump water heater control request can also be actively triggered by the heat pump water heater control device, for example, the heat pump water heater control device is provided with an energy efficiency control process, and when it is detected that the target heat pump water heater is in operation, the heat pump water heater control request is automatically triggered.

[0071] Specifically, after receiving the heat pump water heater control request, the heat pump water heater control device also obtains the target set temperature and heat pump operating temperature of the target heat pump water heater pointed to by the heat pump water heater. The target heat pump water heater is a heat pump water heater specified in the heat pump water heater system, which can heat the water medium and the air medium so that the water medium and the air medium can reach the specified temperature.

[0072] The target set temperature is a temperature parameter corresponding to a specified temperature set by a user and driving the target heat pump water heater to heat a specified medium (such as a water medium and an air medium) to a specified temperature.

[0073] Among them, the heat pump operating temperature is the operating temperature corresponding to each component of the target heat pump water heater when it is in operation. Optionally, in a specific embodiment, the heat pump operating temperature includes the water tank temperature, the return water temperature and the heat pump refrigerant pipe temperature. The water tank temperature is a water temperature that characterizes the internal water temperature of the heat pump water tank in the target heat pump water heater. The return water temperature is a temperature parameter of the cooling water in the heat pump water heater returning from the heat source to the heat pump. The heat pump refrigerant pipe temperature is the outlet temperature of the microchannel refrigerant pipe of the water tank in the target heat pump water heater.

[0074] Specifically, the target heat pump water heater is provided with a temperature sensor module or a temperature sensing package module at a designated component position, and the heat pump water heater control device reads the heat pump operating temperature of the target heat pump water heater through the temperature sensor or the temperature sensing package module.

[0075] 202. Determine a target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature;

[0076] Specifically, after obtaining the heat pump operating temperature, the heat pump water heater control device also generates a target heat pump control strategy that can improve the operating energy efficiency of the target heat pump water heater according to the heat pump operating temperature and the target energy efficiency model. That is, the heat pump water heater control device determines the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, return water temperature, heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, so that in the subsequent steps, the target heat pump water heater can be in a better and more efficient operating stage in terms of heating capacity and heating energy efficiency, thereby improving the operating energy efficiency of the target heat pump water heater.

[0077] The target energy efficiency model is an energy efficiency model composed of a heating capacity curve and a heating energy efficiency curve characterizing the target heat pump water heater during operation.

[0078] Specifically, after obtaining the heat pump operating temperature of the target heat pump water heater, the heat pump water heater control device determines the heat pump operating mode of the target heat pump water heater according to the water tank temperature, return water temperature and heat pump refrigerant pipe temperature in the heat pump operating temperature, thereby determining the target heat pump control strategy of the target heat pump water heater according to the heat pump operating state of the target heat pump water heater.

[0079] Optionally, before determining the heat pump operation mode of the target heat pump water heater, the heat pump water heater control device also generates a temperature threshold and / or a temperature difference threshold corresponding to each heat pump operation mode according to each heat pump operation mode and the target energy efficiency model in advance, and compares the temperature threshold and / or the temperature difference threshold with each heat pump operation temperature to determine the operation state of the target heat pump water heater. Optionally, in a specific embodiment, the temperature threshold includes a first temperature threshold and a second temperature threshold. The temperature difference threshold includes a first temperature difference threshold and a second temperature difference threshold.

[0080] Optionally, in a specific embodiment, the heat pump water heater control device obtains the water tank temperature, return water temperature and heat pump refrigerant pipe temperature in the heat pump operating temperature, and determines whether the target heat pump water heater is in a high-efficiency heating mode based on the water tank temperature, return water temperature and heat pump refrigerant pipe temperature in the heat pump operating temperature.

[0081] Specifically, after obtaining the water tank temperature and the heat pump refrigerant temperature, the heat pump water heater control device calculates the first temperature difference between the water tank temperature and the heat pump refrigerant pipe temperature, and determines the heat pump operation mode of the target heat pump water heater based on the first temperature difference and the return water temperature, and generates a target heat pump control strategy for the target heat pump water heater based on the heat pump operation mode and the target energy efficiency model.

[0082] Specifically, after obtaining the first temperature difference, the heat pump water heater control device compares the first temperature difference with the first temperature difference threshold, and compares the return water temperature with the first temperature threshold, thereby determining, based on the judgment result, that the target heat pump water heater is in the corresponding heat pump operation mode in the target energy efficiency model.

[0083] Optional, such as Figure 4 As shown, Figure 4 A flow chart of an embodiment corresponding to the high-efficiency heating mode in the target energy efficiency model in the heat pump water heater control method provided in the embodiment of the present application is shown as follows: Figure 4 In the embodiment shown, if the first temperature difference is less than the first temperature difference threshold and the return water temperature is greater than the first temperature threshold, the heat pump water heater control device determines that the target heat pump water heater is in the high-efficiency heating mode A interval in the target energy efficiency model, and the heat pump water heater control device determines that the heat pump operation mode of the target heat pump water heater is the high-efficiency heating mode.

[0084] Specifically, after determining that the heat pump operation mode is the high-efficiency operation mode, the heat pump water heater control device also obtains the first control strategy corresponding to the high-efficiency heating mode stored in the target energy efficiency model, and determines the first control strategy as the target heat pump control strategy of the target heat pump water heater, so that the target heat pump water heater can operate in the high-efficiency range, thereby achieving energy saving effect. Among them, the second control strategy is a control strategy for adjusting the target heat pump water heater when the target heat pump water heater is in the high-efficiency heating mode, so that the target heat pump water heater can maintain operation in the high-efficiency range.

[0085] Optionally, in another specific embodiment, the heat pump water heater control device further sets a first temperature threshold corresponding to the heat pump operation mode being an inefficient heating mode according to the target energy efficiency model. After obtaining the return water temperature in the heat pump operation temperature, the heat pump water heater also compares the return water temperature with the first temperature threshold, thereby determining whether the heat pump operation mode of the target heat pump water heater is an inefficient heating mode. The inefficient heating mode is an operation mode corresponding to the target heat pump water heater being in an inefficient operation area with a relatively weak heating capacity in the target energy efficiency model.

[0086] Optionally, if the return water temperature is less than the first temperature threshold, the heat pump water heater control device determines that the heat pump operation mode of the target heat pump water heater is an inefficient heating model, and determines that the current heat pump heating capacity of the target heat pump water heater is poor according to the target energy efficiency model, and the heat pump water heater control device obtains the second control strategy corresponding to the inefficient heating mode in the target energy efficiency model, and determines the second control strategy as the target heat pump control strategy of the target heat pump water heater. Among them, the second control strategy is a control strategy for adjusting the target heat pump water heater when the target heat pump water heater is in an inefficient heating mode, thereby improving the heating capacity of the target heat pump water heater.

[0087] Optionally, in other embodiments, when the target heat pump water heater meets the shutdown requirement after reaching the temperature once, the heat pump water heater control device also obtains the water tank temperature in the heat pump operating temperature, and obtains the realized temperature and the target set temperature of the target heat pump water heater to determine the hot water demand of the target heat pump water heater, and determines whether the heat pump operating mode of the target heat pump water heater is a low-demand mode with low hot water demand, and then determines the target heat pump control strategy of the target heat pump water heater.

[0088] That is, after obtaining the water tank temperature and the target set temperature, the heat pump water heater control device calculates the second temperature difference between the target set temperature and the water tank temperature, and compares the second temperature difference with the second temperature difference threshold, so as to determine whether the heat pump operation mode of the target heat pump water heater is the low demand mode.

[0089] Optionally, if the second temperature difference is less than or equal to the second temperature difference threshold, the heat pump water heater control device determines that the current hot water demand is reduced, determines that the heat pump operation mode of the target heat pump water heater is a low demand mode, and the heat pump water heater control device also obtains a third control strategy corresponding to the low demand mode in the target energy efficiency model, and determines the third control strategy as the target heat pump control strategy of the target heat pump water heater. The third control strategy is a control strategy for reducing the operating frequency of the target heat pump water heater when the target heat pump water heater is in the low demand mode.

[0090] Optionally, in other embodiments, when the target heat pump water heater is in the heat pump defrost mode, the heat pump water heater control device further determines whether the target heat pump water heater is in the defrost control mode according to the return water temperature in the heat pump operating temperature. That is, the heat pump water heater control device obtains the return water temperature in the heat pump operating temperature, and compares the return water temperature with the second temperature threshold, thereby determining the defrost efficiency of the target heat pump water heater according to the comparison result, and when the defrost efficiency is low, determining that the heat pump operating mode of the target heat pump water heater is the defrost control mode. Among them, the second temperature threshold is a return water temperature threshold for determining whether the defrost efficiency of the target heat pump water heater meets the requirements when it is in the heat pump defrost mode.

[0091] Optionally, if the return water temperature is less than the second temperature threshold, the heat pump water heater control device determines that the defrost efficiency of the target heat pump water heater does not meet the defrost demand, determines that the heat pump operation mode of the target heat pump water heater is the defrost control mode, and obtains the fourth control strategy corresponding to the defrost control mode in the target energy efficiency mode, and determines the fourth control strategy as the target heat pump control strategy of the target heat pump water heater. The fourth control strategy is a control strategy for improving the defrost efficiency of the target heat pump water heater when the target heat pump water heater is in the heat pump defrost mode.

[0092] 203. Adjust the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy to obtain a target heat pump control result.

[0093] Specifically, after obtaining the target heat pump control strategy of the target heat pump water heater, the heat pump water heater control device also adjusts the heat pump operating parameters such as the water flow rate and / or heat pump operating frequency of the target heat pump water heater according to the target heat pump control strategy, so that the target heat pump water heater can operate within the high-efficiency operating range to achieve the heat pump energy-saving effect.

[0094] Optionally, if the heat pump water heater control device determines that the target heat pump control strategy of the target heat pump water heater is the first control strategy, the heat pump water heater control device opens the heat pump two-way valve in the target heat pump water heater, drives the target heat pump water heater to connect to the target water tank, so that the target heat pump water heater can operate in the high-efficiency operating range of the target energy efficiency model, so that the target heat pump water heater can quickly and energy-savingly produce hot water medium in the high-efficiency operating range to meet the user's hot water demand.

[0095] Optionally, if the heat pump water heater control device determines that the target heat pump control strategy of the target heat pump water heater is the second control strategy, the heat pump operating frequency in the heat pump operating parameters of the target heat pump water heater and the target valve opening in the heat pump operating parameters are reduced according to the target energy efficiency model, thereby reducing the water flow rate of the target heat pump water heater, so that the target heat pump water heater can reach the high-efficiency operating range in the target energy efficiency model, so that the target heat pump water heater can operate in the high-efficiency operating range in the target energy efficiency model, and so that the target heat pump water heater can quickly and energy-savingly produce hot water medium in the high-efficiency operating range to meet the user's hot water demand.

[0096] Optionally, if the heat pump water heater control device determines that the target heat pump control strategy of the target heat pump water heater is the third control strategy, the target valve opening in the heat pump operating parameters of the target heat pump water heater is reduced according to the target energy efficiency model, and then the water flow rate is reduced when the target heat pump water heater is in a low hot water demand state, and the compressor is controlled to output appropriate heating capacity, thereby achieving an energy-saving effect.

[0097] Optionally, if the heat pump water heater control device determines that the target heat pump control strategy of the target heat pump water heater is the fourth control strategy, the heat pump two-way valve in the target water heater is closed, thereby improving the defrosting effect of the target heat pump water heater unit and reducing the water temperature fluctuation at the user end.

[0098] In this embodiment, the heat pump water heater control device obtains the target set temperature and heat pump operating temperature of the target heat pump water heater by responding to the heat pump water heater control request for the target heat pump water heater; determines the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, return water temperature, heat pump refrigerant pipe temperature and target energy efficiency model in the heat pump operating temperature; adjusts the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy to obtain the target heat pump control result. The target set temperature and heat pump operating temperature of the target heat pump water heater are obtained, and the heat pump operating state of the target heat pump water heater is accurately judged according to the target set temperature, heat pump operating temperature and target energy efficiency model, and then the target heat pump control strategy corresponding to the heat pump operating state is generated, and the heat pump operating parameters of the target heat pump water heater are adjusted by the target heat pump control strategy, so that the target heat pump water heater can be driven to be in a suitable operating range during operation, thereby improving the operating energy efficiency of the target heat pump water heater and improving the energy saving effect of the target heat pump water heater.

[0099] In order to better implement the heat pump water heater control method in the embodiment of the present application, based on the heat pump water heater control method, a heat pump water heater control device is also provided in the embodiment of the present application, such as Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of a heat pump water heater control device provided in an embodiment of the present application. Specifically, the heat pump water heater control device 300 includes:

[0100] The temperature acquisition module 301 is configured to respond to a heat pump water heater control request for a target heat pump water heater and acquire a target set temperature and a heat pump operating temperature of the target heat pump water heater;

[0101] The strategy generation module 302 is configured to determine the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature;

[0102] The heat pump control module 303 is configured to adjust the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy to obtain a target heat pump control result.

[0103] In a possible implementation of the embodiment, the heat pump water heater control device determines a target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, including:

[0104] Obtaining the water tank temperature, return water temperature and heat pump refrigerant pipe temperature in the heat pump operating temperature;

[0105] Calculating a first temperature difference between the water tank temperature and the heat pump refrigerant pipe temperature;

[0106] A target heat pump control strategy for the target heat pump water heater is determined according to the first temperature difference, the return water temperature and the target energy efficiency model.

[0107] In a possible implementation manner of the embodiment, the heat pump water heater control device determines a target heat pump control strategy of the target heat pump water heater according to the first temperature difference, the return water temperature and the target energy efficiency model, including:

[0108] If the first temperature difference is less than a first temperature difference threshold, and the return water temperature is greater than a first temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a high-efficiency heating mode;

[0109] A first control strategy corresponding to the high-efficiency heating mode in the target energy efficiency model is obtained, and the first control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

[0110] In a possible implementation of the embodiment, the heat pump water heater control device determines a target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, including:

[0111] Obtaining the return water temperature in the heat pump operating temperature;

[0112] If the return water temperature is less than the first temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a low-efficiency heating mode;

[0113] A second control strategy corresponding to the low-efficiency heating mode in the target energy efficiency model is obtained, and the second control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

[0114] In a possible implementation of the embodiment, the heat pump water heater control device determines a target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, including:

[0115] Obtaining the water tank temperature in the heat pump operating temperature and the target setting temperature corresponding to the target heat pump water heater;

[0116] calculating a second temperature difference between the target set temperature and the water tank temperature;

[0117] If the second temperature difference is less than or equal to a second temperature difference threshold, determining that the heat pump operation mode of the target heat pump water heater is a low demand mode;

[0118] A third control strategy corresponding to the low demand mode in the target energy efficiency model is obtained, and the third control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

[0119] In a possible implementation of the embodiment, the heat pump water heater control device determines a target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, including:

[0120] Obtaining the return water temperature in the heat pump operating temperature;

[0121] If the return water temperature is lower than a second temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a defrost control mode;

[0122] A fourth control strategy corresponding to the defrost control mode in the target energy efficiency model is obtained, and the fourth control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

[0123] In a possible implementation of the embodiment, the heat pump water heater control device adjusts the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy, including:

[0124] If the target heat pump control strategy is the first control strategy, the heat pump two-way valve in the target heat pump water heater is opened to drive the target heat pump water heater to connect to the target water tank;

[0125] If the target heat pump control strategy is the second control strategy, reducing the heat pump operating frequency in the heat pump operating parameters of the target heat pump water heater and the target valve opening in the heat pump operating parameters according to the target energy efficiency model;

[0126] If the target heat pump control strategy is the third control strategy, reducing the target valve opening in the heat pump operating parameters of the target heat pump water heater according to the target energy efficiency model;

[0127] If the target heat pump control strategy is the fourth control strategy, the heat pump two-way valve in the target water heater is closed.

[0128] In this embodiment, the heat pump water heater control device obtains the target set temperature and heat pump operating temperature of the target heat pump water heater by responding to the heat pump water heater control request for the target heat pump water heater; determines the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, return water temperature, heat pump refrigerant pipe temperature and target energy efficiency model in the heat pump operating temperature; adjusts the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy to obtain the target heat pump control result. The target set temperature and heat pump operating temperature of the target heat pump water heater are obtained, and the heat pump operating state of the target heat pump water heater is accurately judged according to the target set temperature, heat pump operating temperature and target energy efficiency model, and then the target heat pump control strategy corresponding to the heat pump operating state is generated, and the heat pump operating parameters of the target heat pump water heater are adjusted by the target heat pump control strategy, so that the target heat pump water heater can be driven to be in a suitable operating range during operation, thereby improving the operating energy efficiency of the target heat pump water heater and improving the energy saving effect of the target heat pump water heater.

[0129] The embodiment of the present invention also provides a heat pump water heater control device, such as Figure 6 As shown, Figure 6 This is a schematic structural diagram of an embodiment of a heat pump water heater control device provided in an embodiment of the present application.

[0130] The heat pump water heater control device integrates any one of the heat pump water heater control devices provided in the embodiments of the present invention, and the heat pump water heater control device includes:

[0131] one or more processors;

[0132] Memory; and

[0133] One or more applications, wherein the one or more applications are stored in the memory and are configured so that the processor executes the steps of the heat pump water heater control method described in any of the above heat pump water heater control method embodiments.

[0134] Specifically, the heat pump water heater control device may include one or more processing core processors 401, one or more computer-readable storage media memories 402, a power supply 403, an input unit 404 and other components. Those skilled in the art will understand that Figure 6 The heat pump water heater control device structure shown in the figure does not constitute a limitation on the heat pump water heater control device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. Among them:

[0135] The processor 401 is the control center of the heat pump water heater control device. It uses various interfaces and lines to connect the various parts of the entire heat pump water heater control device. By running or executing the software programs and / or modules stored in the memory 402, and calling the data stored in the memory 402, it executes various functions of the heat pump water heater control device and processes data, thereby monitoring the heat pump water heater control device as a whole. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 401.

[0136] The memory 402 can be used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the heat pump water heater control device, etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 402 may also include a memory controller to provide the processor 401 with access to the memory 402.

[0137] The heat pump water heater control device also includes a power supply 403 for supplying power to each component. Preferably, the power supply 403 can be logically connected to the processor 401 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply 403 can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0138] The heat pump water heater control device may further include an input unit 404, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0139] Although not shown, the heat pump water heater control device may further include a display unit, etc., which will not be described in detail herein. Specifically in this embodiment, the processor 401 in the heat pump water heater control device will load the executable files corresponding to the processes of one or more application programs into the memory 402 according to the following instructions, and the processor 401 will run the application programs stored in the memory 402, thereby realizing various functions, as follows:

[0140] In response to a heat pump water heater control request for a target heat pump water heater, obtaining a target set temperature and a heat pump operating temperature of the target heat pump water heater;

[0141] Determine the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature;

[0142] The heat pump operating parameters of the target heat pump water heater are adjusted according to the target heat pump control strategy to obtain a target heat pump control result.

[0143] To this end, an embodiment of the present invention provides a computer-readable storage medium, which may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in any heat pump water heater control method provided in the embodiment of the present invention. For example, the computer program can be loaded by the processor to execute the following steps:

[0144] In response to a heat pump water heater control request for a target heat pump water heater, obtaining a target set temperature and a heat pump operating temperature of the target heat pump water heater;

[0145] Determine the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature;

[0146] The heat pump operating parameters of the target heat pump water heater are adjusted according to the target heat pump control strategy to obtain a target heat pump control result.

[0147] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0148] In specific implementation, the above units or structures can be implemented as independent entities, or can be arbitrarily combined to be implemented as the same or several entities. The specific implementation of the above units or structures can refer to the previous method embodiments, which will not be repeated here.

[0149] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0150] The above is a detailed introduction to a heat pump water heater control method provided in an embodiment of the present application. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A heat pump water heater control method, characterized in that: The heat pump water heater control method comprises: In response to a heat pump water heater control request for a target heat pump water heater, obtaining a target set temperature and a heat pump operating temperature of the target heat pump water heater; Determine the target heat pump control strategy of the target heat pump water heater according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature; The heat pump operating parameters of the target heat pump water heater are adjusted according to the target heat pump control strategy to obtain a target heat pump control result.

2. The heat pump water heater control method according to claim 1, characterized in that: The target heat pump control strategy of the target heat pump water heater is determined according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, including: Obtaining the water tank temperature, return water temperature and heat pump refrigerant pipe temperature in the heat pump operating temperature; Calculating a first temperature difference between the water tank temperature and the heat pump refrigerant pipe temperature; A target heat pump control strategy for the target heat pump water heater is determined according to the first temperature difference, the return water temperature and the target energy efficiency model.

3. The heat pump water heater control method according to claim 2, characterized in that: The step of determining a target heat pump control strategy for the target heat pump water heater according to the first temperature difference, the return water temperature and the target energy efficiency model includes: If the first temperature difference is less than a first temperature difference threshold, and the return water temperature is greater than a first temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a high-efficiency heating mode; A first control strategy corresponding to the high-efficiency heating mode in the target energy efficiency model is obtained, and the first control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

4. The heat pump water heater control method according to claim 1, characterized in that: The target heat pump control strategy of the target heat pump water heater is determined according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, including: Obtaining the return water temperature in the heat pump operating temperature; If the return water temperature is less than the first temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a low-efficiency heating mode; A second control strategy corresponding to the low-efficiency heating mode in the target energy efficiency model is obtained, and the second control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

5. The heat pump water heater control method according to claim 1, characterized in that: The target heat pump control strategy of the target heat pump water heater is determined according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, including: Obtaining the water tank temperature in the heat pump operating temperature and the target setting temperature corresponding to the target heat pump water heater; calculating a second temperature difference between the target set temperature and the water tank temperature; If the second temperature difference is less than or equal to a second temperature difference threshold, determining that the heat pump operation mode of the target heat pump water heater is a low demand mode; A third control strategy corresponding to the low demand mode in the target energy efficiency model is obtained, and the third control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

6. The heat pump water heater control method according to claim 1, characterized in that: The target heat pump control strategy of the target heat pump water heater is determined according to the water tank temperature, the return water temperature, the heat pump refrigerant pipe temperature and the target energy efficiency model in the heat pump operating temperature, including: Obtaining the return water temperature in the heat pump operating temperature; If the return water temperature is lower than a second temperature threshold, determining that the heat pump operation mode of the target heat pump water heater is a defrost control mode; A fourth control strategy corresponding to the defrost control mode in the target energy efficiency model is obtained, and the fourth control strategy is determined as the target heat pump control strategy of the target heat pump water heater.

7. The heat pump water heater control method according to any one of claims 1 to 6, characterized in that: The step of adjusting the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy includes: If the target heat pump control strategy is the first control strategy, the heat pump two-way valve in the target heat pump water heater is opened to drive the target heat pump water heater to connect to the target water tank; If the target heat pump control strategy is the second control strategy, reducing the heat pump operating frequency in the heat pump operating parameters of the target heat pump water heater and the target valve opening in the heat pump operating parameters according to the target energy efficiency model; If the target heat pump control strategy is the third control strategy, reducing the target valve opening in the heat pump operating parameters of the target heat pump water heater according to the target energy efficiency model; If the target heat pump control strategy is the fourth control strategy, the heat pump two-way valve in the target water heater is closed.

8. A heat pump water heater control device, characterized in that: The heat pump water heater control device comprises: a temperature acquisition module configured to respond to a heat pump water heater control request for a target heat pump water heater and acquire a target set temperature and a heat pump operating temperature of the target heat pump water heater; A strategy generation module is configured to determine a target heat pump control strategy for the target heat pump water heater according to a water tank temperature, a return water temperature, a heat pump refrigerant pipe temperature and a target energy efficiency model in the heat pump operating temperature; The heat pump control module is configured to adjust the heat pump operating parameters of the target heat pump water heater according to the target heat pump control strategy to obtain a target heat pump control result.

9. A heat pump water heater control device, characterized in that: The heat pump water heater control device comprises: one or more processors; Memory; and One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the steps of the heat pump water heater control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps of the heat pump water heater control method according to any one of claims 1 to 7.

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