Method and device for preparing high-temperature hot water of heat pump

Abstract

The invention relates to a heat pump high-temperature hot water preparation method and device. The environment temperature and the return water temperature are obtained; calculating environment attenuation heating capacity according to the environment temperature, and calculating water temperature attenuation heating capacity according to the environment attenuation heating capacity and the return water temperature so as to determine sensible heat capacity; determining a water flow control value according to the sensible heat quantity and the temperature increasing amplitude; wherein the water flow control value is used for controlling the return water flow of the return water pump; the amplification amplitude is the difference value between the target temperature and the highest water outlet temperature. On the basis of the design that additional hardware is not introduced, the hardware basis of an original heat pump system is utilized, the preparation limitation of a compressor and a refrigerant on the highest outlet water temperature is broken through, and the temperature range of the outlet water temperature is expanded.

Description

Technical Field

[0001] This application relates to the field of heat pump control technology, and in particular to a method and apparatus for preparing high-temperature hot water using a heat pump. Background Technology

[0002] An air source heat pump is a type of heat pump that utilizes heat energy from the air for energy conversion. It is primarily used for domestic hot water supply, heating, and cooling. Its working principle is based on the reverse Carnot cycle. A compressor absorbs heat energy from the air, which is then transferred to a water tank via a refrigerant to heat cold water. It can provide constant-temperature water supply around the clock without direct sunlight. The device uses components such as an evaporator and condenser to form a circulation system that converts low-temperature heat energy into high-temperature heat energy.

[0003] Currently, air source heat pump units, when preparing hot water, are often limited by the physical properties of the refrigerant and the maximum allowable operating pressure of the compressor, thus restricting the highest temperature at which the water can be produced. For example, the R410A refrigerant commonly used in heat pumps typically has a compressor maximum operating pressure of approximately 42 bar, and its corresponding saturation temperature is 65°C. Considering safety margins and the heat exchanger's temperature difference, the maximum allowable outlet water temperature for most units is 60°C. Therefore, it is evident that the compressor and refrigerant impose limitations on the maximum outlet water temperature. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a method and apparatus for preparing high-temperature hot water using a heat pump, in order to solve the problem that the compressor and refrigerant have limitations on the maximum outlet water temperature in the prior art.

[0005] This application provides a method for preparing high-temperature hot water using a heat pump, including the following steps:

[0006] Obtain ambient temperature and return water temperature;

[0007] The ambient attenuation heat capacity is calculated based on the ambient temperature, and the water temperature attenuation heat capacity is calculated based on the ambient attenuation heat capacity and the return water temperature to determine the sensible heat capacity.

[0008] Based on the sensible heat and the temperature increase, a water flow control value is determined; wherein, the water flow control value is used to control the return water flow of the return water pump; the increase is the difference between the target temperature and the highest outlet water temperature.

[0009] The heat pump high-temperature hot water preparation method of this application embodiment obtains the ambient temperature and return water temperature; calculates the ambient attenuation heat capacity based on the ambient temperature, and calculates the water temperature attenuation heat capacity based on the ambient attenuation heat capacity and the return water temperature to determine the sensible heat capacity; and determines the water flow control value based on the sensible heat capacity and the temperature increase range; wherein, the water flow control value is used to control the return water flow rate of the return water pump; and the increase range is the difference between the target temperature and the highest outlet water temperature. Based on this, without introducing additional hardware, the method utilizes the existing hardware foundation of the heat pump system to overcome the limitations of the compressor and refrigerant on the preparation of the highest outlet water temperature, thereby expanding the temperature range of the outlet water temperature.

[0010] As one optional embodiment, the process of calculating the ambient temperature attenuation of heating capacity is as follows:

[0011] Environmental degradation heating capacity = baseline heating capacity * (1 + heating capacity change range)^2;

[0012] The reference heating capacity is the heating capacity under rated operating conditions, and the heating capacity variation range = (ambient temperature - reference ambient temperature) * ambient unit range.

[0013] As one optional embodiment, the baseline heating capacity is 10kW-30kW; the environmental unit range is 1-3%.

[0014] As one optional embodiment, the process of calculating the water temperature decay heat capacity based on the environmental decay heat capacity and the return water temperature to determine the sensible heat capacity is as follows:

[0015] Water temperature decay heating capacity = Ambient temperature decay heating capacity * (1 + heating capacity per unit temperature rise)^(return water temperature - reference return water temperature);

[0016] Sensible heat capacity = Heating capacity due to water temperature decay * Percentage of sensible heat capacity.

[0017] As one optional embodiment, the heating capacity per unit temperature increase is 0.1-0.3%.

[0018] As one optional embodiment, the process of determining the water flow control value based on the sensible heat and the temperature increase is as follows:

[0019] Water flow control value = sensible heat / temperature increase / specific heat capacity of water.

[0020] As one optional embodiment, the method further includes the following steps:

[0021] When the return water temperature reaches the set return water temperature, the heat pump unit will be shut down.

[0022] This application embodiment also provides a heat pump high-temperature hot water preparation device, including:

[0023] Temperature acquisition module, used to acquire ambient temperature and return water temperature;

[0024] The sensible heat calculation module is used to calculate the ambient heat decay based on the ambient temperature, and to calculate the water temperature heat decay based on the ambient heat decay and the return water temperature, so as to determine the sensible heat.

[0025] The flow control module is used to determine the water flow control value based on the sensible heat and the temperature increase rate; wherein, the water flow control value is used to control the return water flow rate of the return water pump; and the increase rate is the difference between the target temperature and the highest outlet water temperature.

[0026] The heat pump high-temperature hot water preparation device of this application embodiment acquires the ambient temperature and return water temperature; calculates the ambient attenuation heat capacity based on the ambient temperature, and calculates the water temperature attenuation heat capacity based on the ambient attenuation heat capacity and the return water temperature to determine the sensible heat capacity; and determines the water flow control value based on the sensible heat capacity and the temperature increase range; wherein, the water flow control value is used to control the return water flow rate of the return water pump; and the increase range is the difference between the target temperature and the highest outlet water temperature. Based on this, without introducing additional hardware, the device utilizes the existing hardware foundation of the heat pump system to overcome the limitations of the compressor and refrigerant on the preparation of the highest outlet water temperature, thus expanding the temperature range of the outlet water temperature.

[0027] At least one embodiment of this application also provides a data control device, including:

[0028] One or more memories that store computer-executable instructions non-transitory;

[0029] One or more processors are configured to run computer-executable instructions, wherein the computer-executable instructions are executed by the one or more processors to implement the heat pump high-temperature hot water preparation method according to any embodiment of the present application.

[0030] The aforementioned data control device acquires the ambient temperature and return water temperature; calculates the ambient temperature decay heating capacity based on the ambient temperature, and calculates the water temperature decay heating capacity based on the ambient temperature decay heating capacity and the return water temperature to determine the sensible heat; and determines the water flow control value based on the sensible heat and the temperature increase rate. The water flow control value is used to control the return water flow rate of the return water pump; the increase rate is the difference between the target temperature and the highest outlet water temperature. Based on this, without introducing additional hardware, the design utilizes the existing hardware foundation of the heat pump system to overcome the limitations of the compressor and refrigerant in achieving the highest outlet water temperature, thus expanding the temperature range of the outlet water.

[0031] At least one embodiment of this application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, implement the heat pump high-temperature hot water preparation method according to any embodiment of this application.

[0032] The aforementioned non-transient computer-readable storage medium acquires the ambient temperature and return water temperature; calculates the ambient attenuation heating capacity based on the ambient temperature, and calculates the water temperature attenuation heating capacity based on the ambient attenuation heating capacity and the return water temperature to determine the sensible heat; and determines the water flow control value based on the sensible heat and the temperature increase rate; wherein, the water flow control value is used to control the return water flow rate of the return water pump; the increase rate is the difference between the target temperature and the highest outlet water temperature. Based on this, without introducing additional hardware, the design utilizes the existing hardware foundation of the heat pump system to overcome the limitations of the compressor and refrigerant in achieving the highest outlet water temperature, thus expanding the temperature range of the outlet water. Attached Figure Description

[0033] Figure 1 This is a flowchart of a heat pump high-temperature hot water preparation method according to an embodiment of the application;

[0034] Figure 2 This is a simplified schematic diagram of a heat pump high-temperature hot water system according to an embodiment of this application;

[0035] Figure 3 This is a structural diagram of a heat pump high-temperature hot water preparation device module according to an embodiment of the application;

[0036] Figure 4 A schematic block diagram of a data control device provided by the present invention;

[0037] Figure 5 This is a schematic diagram of a non-transitory computer-readable storage medium provided by the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0039] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0040] To keep the following description of the embodiments of this application clear and concise, detailed descriptions of some known functions and components have been omitted.

[0041] This application provides a method for preparing high-temperature hot water using a heat pump.

[0042] Figure 1 This is a flowchart of a heat pump high-temperature hot water preparation method according to an embodiment of the application, such as... Figure 1 As shown, a heat pump high-temperature hot water preparation method according to an embodiment of the application includes steps S100 to S102:

[0043] S100, acquires ambient temperature and return water temperature;

[0044] S101, calculate the ambient attenuation heat capacity based on the ambient temperature, and calculate the water temperature attenuation heat capacity based on the ambient attenuation heat capacity and the return water temperature, so as to determine the sensible heat capacity;

[0045] S102, determine the water flow control value based on the sensible heat and the temperature increase range; wherein, the water flow control value is used to control the return water flow of the return water pump; the increase range is the difference between the target temperature and the highest outlet water temperature.

[0046] Figure 2 This is a simplified schematic diagram of a heat pump high-temperature hot water system according to an embodiment of this application, as shown below. Figure 2 As shown, the ambient temperature at which the heat pump system unit operates is the same as the ambient temperature of this application. The temperature of the return water from the hot water storage tank to the main unit of the circulating heating water pump is the return water temperature of this application. The ambient temperature and return water temperature can be obtained by detecting temperature detection devices deployed in appropriate locations.

[0047] To better explain the embodiments of this application, a 5-horsepower ambient temperature heat pump water heater unit is used as an example below. The conventional maximum preparation and return water temperature of a 5-horsepower ambient temperature heat pump water heater unit is 55°C, and its maximum outlet water temperature is 60°C. Through a high-temperature hot water preparation method, the set temperature for the high-temperature hot water control strategy is 55°C, and the maximum outlet water temperature is 75°C. Under rated operating conditions (ambient temperature 20°C, return water temperature 40°C, water flow rate 3.4m³ / h), the system operates as follows: 3 The base heating capacity is 20kW, and the sensible heat accounts for 20% of the total heating capacity.

[0048] In one preferred embodiment, the process of calculating the ambient attenuation of heating capacity based on the ambient temperature in step S100 is as follows:

[0049] Environmental degradation heating capacity = baseline heating capacity * (1 + heating capacity change range)^2;

[0050] The reference heating capacity is the heating capacity under rated operating conditions, and the heating capacity variation range = (ambient temperature - reference ambient temperature) * ambient unit range.

[0051] The baseline heating capacity is 10kW-30kW; the environmental unit range is 1-3%.

[0052] In one preferred embodiment, step S100 involves calculating the water temperature decay heat capacity based on the environmental decay heat capacity and the return water temperature to determine the sensible heat capacity, as shown in the following formula:

[0053] Water temperature decay heating capacity = Ambient temperature decay heating capacity * (1 + heating capacity per unit temperature rise)^(return water temperature - reference return water temperature);

[0054] Sensible heat capacity = Heating capacity due to water temperature decay * Percentage of sensible heat capacity.

[0055] The heating capacity per unit temperature increase is 0.1-0.3%.

[0056] Taking the above example, for every 1°C increase in return water temperature between 40°C and +∞, the heating capacity increases by 0.2% (based on 40°C).

[0057] At ambient temperatures (-∞, 20°C), the heating capacity decreases by 1.5% for every 1°C decrease and increases by 1.5% for every 1°C increase (based on 20°C).

[0058] At ambient temperatures [20, +∞), for every 10°C increase, the proportion of latent heat in heating capacity decreases by 1.5%, and for every 10°C decrease, the proportion of sensible heat in heating capacity increases by 2% (based on 20°C).

[0059] The calculation for a heat pump unit with an ambient temperature of 18℃ and a return water temperature of 55℃ can be performed as follows:

[0060] Environmental degradation heating capacity = 20 * (1 - 1.5%)^2 = 19.4 kW.

[0061] Heating capacity due to water temperature decay = 19.4 * (1 + 0.2%)^(55 - 40) = 20 kW.

[0062] Therefore, when the ambient temperature is 18℃ and the return water temperature is 55℃, the heating capacity is 20kW.

[0063] Sensible heat = 20 * 20% = 4 kW.

[0064] The reference heating capacity, ambient temperature range, and heating capacity per unit temperature rise can be adjusted according to the power and model of different heat pump units. These are only preferred options and not the only ones.

[0065] In one preferred embodiment, the process of determining the water flow control value based on the sensible heat and the temperature increase in step S102 is as follows:

[0066] Water flow control value = sensible heat / temperature increase / specific heat capacity of water.

[0067] Taking the above example, when the return water temperature is 55℃ and the target water temperature is 70℃, the condensing temperature of the unit is 60℃.

[0068] Instantaneous heating at 60℃-70℃ must rely on sensible heat, with a heating temperature difference of 10℃.

[0069] The specific heat capacity of water is 4200 kJ·℃, and 1 kW = 3600 kJ.

[0070] Therefore, the sensible heat heating water flow rate = heating capacity / temperature difference / specific heat capacity = 4 * 3.6 / 4.2 / 10 = 0.34 m³ 3 / h.

[0071] At this point, adjust the return water flow rate of the return water pump from 3.4m. 3 / h adjusted to 0.34m 3 If the unit outlet water temperature is 70℃, then the unit outlet water temperature is 70℃.

[0072] Preferably, such as Figure 1 As shown, the heat pump high-temperature hot water preparation method of one embodiment of the application further includes the following steps:

[0073] S103 controls the heat pump unit to stop when the return water temperature reaches the set return water temperature.

[0074] The return water temperature is set at 55-60℃. Preferably, the return water temperature is set at 57℃.

[0075] Taking the above example, when the return water temperature is detected to be 57℃, the heat pump unit will stop when the temperature is reached to avoid continuously increasing the maximum outlet water temperature.

[0076] The heat pump high-temperature hot water preparation method of this application embodiment obtains the ambient temperature and return water temperature; calculates the ambient attenuation heat capacity based on the ambient temperature, and calculates the water temperature attenuation heat capacity based on the ambient attenuation heat capacity and the return water temperature to determine the sensible heat capacity; and determines the water flow control value based on the sensible heat capacity and the temperature increase range; wherein, the water flow control value is used to control the return water flow rate of the return water pump; and the increase range is the difference between the target temperature and the highest outlet water temperature. Based on this, without introducing additional hardware, the method utilizes the existing hardware foundation of the heat pump system to overcome the limitations of the compressor and refrigerant on the preparation of the highest outlet water temperature, thereby expanding the temperature range of the outlet water temperature.

[0077] This application also provides a heat pump high-temperature hot water preparation device.

[0078] Figure 3 This is a structural diagram of a heat pump high-temperature hot water preparation device module according to an embodiment of the application, such as... Figure 3 As shown, one embodiment of the heat pump high-temperature hot water preparation apparatus includes:

[0079] Temperature acquisition module 100 is used to acquire ambient temperature and return water temperature;

[0080] The sensible heat calculation module 101 is used to calculate the ambient decay heat capacity based on the ambient temperature, and to calculate the water temperature decay heat capacity based on the ambient decay heat capacity and the return water temperature, so as to determine the sensible heat capacity.

[0081] The flow control module 102 is used to determine the water flow control value based on the sensible heat and the temperature increase amplitude; wherein, the water flow control value is used to control the return water flow of the return water pump; the increase amplitude is the difference between the target temperature and the highest outlet water temperature.

[0082] The heat pump high-temperature hot water preparation device of this application embodiment acquires the ambient temperature and return water temperature; calculates the ambient attenuation heat capacity based on the ambient temperature, and calculates the water temperature attenuation heat capacity based on the ambient attenuation heat capacity and the return water temperature to determine the sensible heat capacity; and determines the water flow control value based on the sensible heat capacity and the temperature increase range; wherein, the water flow control value is used to control the return water flow rate of the return water pump; and the increase range is the difference between the target temperature and the highest outlet water temperature. Based on this, without introducing additional hardware, the device utilizes the existing hardware foundation of the heat pump system to overcome the limitations of the compressor and refrigerant on the preparation of the highest outlet water temperature, thus expanding the temperature range of the outlet water temperature.

[0083] At least one embodiment of this application also provides a data control device. Figure 4 This is a schematic block diagram of a data control device provided for at least one embodiment of this application. For example, such as... Figure 4 As shown, the data control device 20 may include one or more memories 200 and one or more processors 201. The memories 200 are used to store computer-executable instructions non-transitory; the processors 201 are used to run the computer-executable instructions, which, when run by the processors 201, can cause the processors 201 to perform one or more steps in the heat pump high-temperature hot water preparation method according to any embodiment of this application.

[0084] For details regarding the specific implementation and explanation of each step in the heat pump high-temperature hot water preparation method, please refer to the relevant content in the embodiments of the above-mentioned heat pump high-temperature hot water preparation method, which will not be repeated here. It should be noted that... Figure 4 The components of the data control device 20 shown are merely exemplary and not limiting. The data control device 20 may have other components depending on the actual application requirements.

[0085] In one embodiment, the processor 201 and the memory 200 can communicate directly or indirectly with each other. For example, the processor 201 and the memory 200 can communicate via a network connection. The network can include a wireless network, a wired network, and / or any combination of wireless and wired networks; this application does not limit the type and function of the network. Alternatively, the processor 201 and the memory 200 can also communicate via a bus connection. The bus can be a Peripheral Component Interconnect Standard (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. For example, the processor 201 and the memory 200 can be located at a remote data server (cloud) or a distributed energy system (local), or at a client (e.g., a mobile device such as a mobile phone). For example, the processor 201 can be a central processing unit (CPU), a tensor processor (TPU), or a graphics processing unit (GPU), etc., with data processing and / or instruction execution capabilities, and can control other components in the data control device 20 to perform desired functions. The central processing unit (CPU) can be an x86 or ARM architecture, etc.

[0086] In one embodiment, memory 200 may include any combination of one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, erasable programmable read-only memory (EPROM), portable compact disc read-only memory (CD-ROM), USB memory, flash memory, etc. One or more computer-executable instructions may be stored on the computer-readable storage medium, and processor 201 may execute these computer-executable instructions to implement various functions of data control device 20. Various application programs and various data, as well as various data used and / or generated by the application programs, may also be stored in memory 200.

[0087] It should be noted that the data control device 20 can achieve similar technical effects to the aforementioned heat pump high-temperature hot water preparation method, and the repetitions will not be repeated.

[0088] At least one embodiment of this application also provides a non-transitory computer-readable storage medium. Figure 5 This is a schematic diagram of a non-transitory computer-readable storage medium provided for at least one embodiment of this application. For example, such as... Figure 5 As shown, one or more computer-executable instructions 301 may be stored non-transitory on the non-transitory computer-readable storage medium 30. For example, when the computer-executable instructions 301 are executed by a computer, the computer may perform one or more steps in a heat pump high-temperature hot water preparation method according to any embodiment of this application.

[0089] In one embodiment, the non-transitory computer-readable storage medium 30 can be applied to the data control device 20 described above, for example, it can be the memory 200 in the data control device 20.

[0090] In one embodiment, the description of the non-transitory computer-readable storage medium 30 can be found in the description of the memory 200 in the embodiment of the data control device 20, and will not be repeated hereafter.

[0091] It should be noted that the memory 200 stores different non-transient computer-executable instructions, and the data control device 20 corresponds to the firmware upgrade device. When the computer-executable instructions are run by the processor 201, the processor 201 can perform one or more steps in the heat pump high-temperature hot water preparation method according to any embodiment of this application.

[0092] The following points should be noted regarding this application:

[0093] (1) The accompanying drawings of the embodiments of this application only involve the structures involved in the embodiments of this application. Other structures can be referred to the general design.

[0094] (2) For clarity, the thickness and dimensions of layers or structures are enlarged in the accompanying drawings used to describe embodiments of the invention. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element, or there may be intermediate elements present.

[0095] (3) Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other to obtain new embodiments. The above are only specific implementations of this application, but the protection scope of this application is not limited thereto, and the protection scope of this application shall be determined by the protection scope of the claims.

[0096] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A method for preparing high-temperature hot water using a heat pump, characterized in that, Including the following steps: Obtain ambient temperature and return water temperature; The ambient attenuation heat production is calculated based on the ambient temperature, and the water temperature attenuation heat production is calculated based on the ambient attenuation heat production and the return water temperature to determine the sensible heat. Based on the sensible heat and the temperature increase, a water flow control value is determined; wherein, the water flow control value is used to control the return water flow of the return water pump; the increase is the difference between the target temperature and the highest outlet water temperature.

2. The method for preparing high-temperature hot water using a heat pump according to claim 1, characterized in that, The process of calculating the ambient temperature attenuation of heating capacity is as follows: Environmental degradation heating capacity = baseline heating capacity * (1 + heating capacity change range)^2; The reference heating capacity is the heating capacity under rated operating conditions, and the heating capacity variation range = (ambient temperature - reference ambient temperature) * ambient unit range.

3. The method for preparing high-temperature hot water using a heat pump according to claim 2, characterized in that, The reference heating capacity is 10kW-30kW; the environmental unit range is 1-3%.

4. The method for preparing high-temperature hot water using a heat pump according to claim 1, characterized in that, The process of calculating the water temperature decay heat capacity based on the environmental decay heat capacity and the return water temperature to determine the sensible heat capacity is as follows: Water temperature decay heating capacity = Ambient temperature decay heating capacity * (1 + heating capacity per unit temperature rise)^(return water temperature - reference return water temperature); Sensible heat capacity = Heating capacity due to water temperature decay * Percentage of sensible heat capacity.

5. The method for preparing high-temperature hot water using a heat pump according to claim 4, characterized in that, The heating capacity per unit temperature increase is 0.1-0.3%.

6. The method for preparing high-temperature hot water using a heat pump according to claim 1, characterized in that, The process of determining the water flow control value based on the sensible heat and the temperature increase is as follows: Water flow control value = sensible heat / temperature increase / specific heat capacity of water.

7. The method for preparing high-temperature hot water using a heat pump according to claim 1, characterized in that, It also includes the following steps: When the return water temperature reaches the set return water temperature, the heat pump unit will be shut down.

8. A heat pump high-temperature hot water preparation device, characterized in that, include: Temperature acquisition module, used to acquire ambient temperature and return water temperature; The sensible heat calculation module is used to calculate the ambient heat decay based on the ambient temperature, and to calculate the water temperature heat decay based on the ambient heat decay and the return water temperature, so as to determine the sensible heat. The flow control module is used to determine the water flow control value based on the sensible heat and the temperature increase rate; wherein the water flow control value is used to control the return water flow rate of the return water pump; and the increase rate is the difference between the target temperature and the highest outlet water temperature.

9. A non-transitory computer-readable storage medium, characterized in that, The non-transitory computer-readable storage medium stores computer-executable instructions that, when executed by a processor, implement the heat pump high-temperature hot water preparation method as described in any one of claims 1 to 7.

10. A data control device, characterized in that, include: One or more memories that store computer-executable instructions non-transitory; One or more processors configured to run computer-executable instructions, wherein the computer-executable instructions are executed by the one or more processors to implement the heat pump high-temperature hot water preparation method as described in any one of claims 1 to 7.

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