Control method and device of solar heat pump unit and solar heat pump unit

Abstract

The present application relates to the technical field of heat pump, and provides a control method and device of a solar heat pump unit and the solar heat pump unit, the solar heat pump unit comprises a water tank, a heat pump module and a solar module for supplying heat to the water tank, the control method of the solar heat pump unit comprises: obtaining a setting mode of the solar heat pump unit; controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit; wherein the solar heat pump unit has multiple setting modes, and in the multiple setting modes, the degree of user's demand for hot water in the water tank is different. The present application combines the heat pump and the solar energy as a heat source, has multiple operating modes, can achieve the purpose of saving electricity, and can match the corresponding operating mode according to the setting demand of the user, has a wide range of applications, thereby effectively improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and in particular to a control method, device, and solar heat pump unit for a solar heat pump unit. Background Technology

[0002] Heat pump units, as a popular and economical energy-saving device, extract low-temperature heat energy from ambient heat sources (such as water or air) after being connected to a power source, and then convert it into higher-temperature heat energy, releasing it into the circulating medium (such as water or air) as a high-temperature heat source output. This process saves the electrical energy consumed by the compressor, achieving a significant increase in energy efficiency. However, it has the following drawbacks: during peak electricity consumption periods, when electricity is insufficient and prices are high, the cost of operating a single heat pump mode remains high, making it unsuitable for various operating conditions. Summary of the Invention

[0003] This invention provides a control method, device, and solar heat pump unit for a solar heat pump unit. By combining a heat pump with solar energy as a heat source, it has multiple operating modes, which can achieve the purpose of saving electricity. Moreover, it can match the corresponding operating mode according to the user's setting requirements, making it widely applicable and effectively improving the user experience.

[0004] This invention provides a control method for a solar heat pump unit, the solar heat pump unit comprising: a water tank, a heat pump module for heating the water tank, and a solar module, the control method comprising:

[0005] Obtain the setting mode of the solar heat pump unit;

[0006] According to the setting mode of the solar heat pump unit, control the heat pump module and / or the solar module to start operation;

[0007] The solar heat pump unit has multiple setting modes, and the user's demand for hot water in the water tank varies in these modes.

[0008] According to a control method for a solar heat pump unit provided by the present invention, the steps of controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit include:

[0009] The solar heat pump unit is set to the first setting mode, the heat pump module is controlled to start operation, and the solar module is controlled to open and close according to the preset heating conditions.

[0010] The solar heat pump unit is set to the second setting mode, and the opening and closing of the heat pump module and the solar module are controlled according to the target preset temperature of the water tank heating and the preset heating conditions.

[0011] The solar heat pump unit is set to the third setting mode, and the opening and closing of the heat pump module and the solar module are controlled according to the preset heating conditions.

[0012] The demand for the first setting mode is greater than that for the second setting mode, and the demand for the second setting mode is greater than that for the third setting mode.

[0013] According to a control method for a solar heat pump unit provided by the present invention, the step of controlling the opening and closing of the solar module based on preset heating conditions includes:

[0014] The current water temperature in the water tank and the heating temperature of the solar module are detected.

[0015] If the heating temperature of the solar module is determined to be greater than the current water temperature of the water tank, the solar module is controlled to start operation.

[0016] If the heating temperature of the solar module is determined to be less than or equal to the current water temperature of the water tank, the solar module is controlled to shut down.

[0017] According to a control method for a solar heat pump unit provided by the present invention, the steps of controlling the opening and closing of the heat pump module and the solar module based on the target preset temperature of the water tank and the preset heating conditions include:

[0018] The target preset temperature for heating the water tank is determined to be either a first target preset temperature or a second target preset temperature. If the heating temperature of the solar module is greater than the current water temperature of the water tank, the solar module is controlled to start running, and the heat pump module is turned off. If the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, the solar module is controlled to turn off, and the heat pump module is controlled to start running.

[0019] Wherein, the first target preset temperature is less than the second target preset temperature.

[0020] According to a control method for a solar heat pump unit provided by the present invention, the step of controlling the opening and closing of the heat pump module and the solar module based on the target preset temperature of the water tank and the preset heating conditions further includes:

[0021] The target preset temperature for heating the water tank is determined to be the third target preset temperature. The heat pump module is controlled to start running. If the heating temperature of the solar module is greater than the current water temperature of the water tank, the solar module is controlled to start running. If the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, the solar module is controlled to turn off.

[0022] The second target preset temperature is lower than the third target preset temperature.

[0023] According to a control method for a solar heat pump unit provided by the present invention, the steps of controlling the opening and closing of the heat pump module and the solar module based on the preset heating conditions include:

[0024] If the heating temperature of the solar module is determined to be greater than the current water temperature of the water tank, the solar module is turned on and the heat pump module is turned off.

[0025] If the heating temperature of the solar module is determined to be less than or equal to the current water temperature of the water tank, the solar module is controlled to shut down and the heat pump module is started.

[0026] A control method for a solar heat pump unit provided by the present invention further includes:

[0027] The solar heat pump unit is set to the first setting mode, and the heat pump module is controlled to operate at the highest operating load.

[0028] The solar heat pump unit is set to either the second or third setting mode, and when the heat pump module is turned on, the power grid input signal of the heat pump module is detected.

[0029] The operating load of the heat pump module is controlled according to the power grid input signal of the heat pump module.

[0030] According to a control method for a solar heat pump unit provided by the present invention, the step of controlling the operating load of the heat pump module based on the grid input signal of the heat pump module includes:

[0031] If the solar heat pump unit is set to the second setting mode, and the grid input signal is either the first grid input signal or the second grid input signal, the heat pump module is controlled to operate at the first operating load. If the grid input signal is the third grid input signal, the heat pump module is controlled to operate at the third operating load.

[0032] Wherein, the electricity price of the first grid input signal is greater than the electricity price of the second grid input signal and less than the electricity price of the third grid input signal; the first operating load is greater than the third operating load and less than the highest operating load.

[0033] According to a control method for a solar heat pump unit provided by the present invention, the step of controlling the operating load of the heat pump module based on the grid input signal of the heat pump module further includes:

[0034] The solar heat pump unit is set to the third setting mode. If the grid input signal is the first grid input signal, the heat pump module is controlled to operate at the first operating load. If the grid input signal is the second grid input signal, the heat pump module is controlled to operate at the second operating load. If the grid input signal is the third grid input signal, the heat pump module is controlled to operate at the third operating load.

[0035] Wherein, the first operating load is less than the second operating load, and the second operating load is less than the highest operating load.

[0036] The present invention also provides a control device for a solar heat pump unit, the solar heat pump unit comprising: a water tank, a heat pump module for heating the water tank, and a solar module, the control device comprising:

[0037] The acquisition module is used to acquire the setting mode of the solar heat pump unit;

[0038] The control module is used to control the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit;

[0039] The solar heat pump unit has multiple setting modes, and the user's demand for hot water in the water tank varies in these modes.

[0040] The present invention also provides a solar heat pump unit, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-described control method for the solar heat pump unit.

[0041] The present invention provides a control method, device, and solar heat pump unit. The solar heat pump unit has multiple setting modes, and the user's demand for hot water in the water tank varies in these modes. By acquiring the setting mode of the solar heat pump unit, and then controlling at least one of the heat pump module and solar module to operate according to the setting mode, it is possible to achieve solar energy operation mode, heat pump operation mode, and combined solar heat pump operation mode. Therefore, by combining a heat pump and solar energy as a heat source, the present invention offers multiple operating modes, achieving energy saving. Furthermore, it can match the corresponding operating mode according to the user's setting needs, making it widely applicable and effectively improving the user experience. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in this invention or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is one of the structural schematic diagrams of the solar heat pump unit provided by the present invention;

[0044] Figure 2 This is a schematic diagram of the solar operation mode principle of the solar heat pump unit provided by the present invention;

[0045] Figure 3 This is a schematic diagram of the heat pump operation mode principle of the solar heat pump unit provided by the present invention;

[0046] Figure 4 This is a schematic diagram illustrating the principle of the combined operation mode of the solar heat pump unit provided by the present invention.

[0047] Figure 5 This is one of the flowcharts illustrating the control method for a solar heat pump unit provided by the present invention;

[0048] Figure 6 This is the second flowchart illustrating the control method for the solar heat pump unit provided by the present invention;

[0049] Figure 7 This is the third flowchart illustrating the control method for the solar heat pump unit provided by the present invention;

[0050] Figure 8 This is a schematic diagram of the control device for the solar heat pump unit provided by the present invention;

[0051] Figure 9 This is the second structural schematic diagram of the solar heat pump unit provided by the present invention.

[0052] Figure label:

[0053] 1: Water tank; 2: Inlet pipe; 3: Outlet pipe; 4: Inlet valve; 5: Outlet valve;

[0054] 6: First temperature sensor; 7: Outdoor unit; 8: Indoor heat exchanger;

[0055] 9: First heat exchange coil; 10: Circulation pump; 11: Power grid; 12: Solar water heater;

[0056] 13: Second heat exchange coil; 14: Solenoid valve; 15: Second temperature sensor;

[0057] 16: Third temperature sensor; 17: Outer ring temperature sensor;

[0058] 18: Acquisition module; 19: Control module;

[0059] 20: Processor; 21: Communication interface; 22: Memory; 23: Communication bus. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention 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 invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0061] In the description of the embodiments of the present invention, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] The following is combined Figures 1-9 The present invention describes a control method, apparatus, and solar heat pump unit for a solar heat pump unit.

[0065] According to one embodiment of the present invention, referring to Figures 1-4As shown, the present invention provides a solar heat pump unit, which mainly includes: a water tank 1 and a heat pump module and a solar module for heating the water tank 1.

[0066] The water tank 1 is located indoors and has an inlet pipe 2 and an outlet pipe 3. Water can be supplied to the water tank 1 through the inlet pipe 2, and the hot water in the water tank 1 can be discharged through the outlet pipe 3 for domestic use. The inlet pipe 2 is equipped with an inlet valve 4 to control the inlet water volume, and the outlet pipe 3 is equipped with an outlet valve 5 to control the outlet water volume. In addition, the water tank 1 is also equipped with a first temperature sensor 6 to detect the water temperature in the water tank 1.

[0067] The heat pump module mainly includes: an outdoor unit 7, an indoor heat exchanger 8, a first heat exchange coil 9, and a circulation pump 10. The outdoor unit 7 is connected to the power grid 11 to provide power. The indoor heat exchanger 8 can be a plate heat exchanger. The indoor heat exchanger 8 is circulatedly connected to the outdoor unit 7 and the first heat exchange coil 9. The first heat exchange coil 9 is set in the water tank 1 to heat the water in the water tank 1. The circulation pump 10 is set in the pipeline of the first heat exchange coil 9 to realize the circulation of water in the first heat exchange coil 9.

[0068] The solar module mainly includes: a solar water heater 12, a second heat exchange coil 13, and a water pump. The solar water heater 12 is installed outdoors and connected to the second heat exchange coil 13 via a circulating water circuit. The second heat exchange coil 13 is installed in a water tank 1 and is used to heat the water in the water tank 1. The water pump is installed in the circulating water circuit to realize water circulation. Furthermore, a solenoid valve 14 and a second temperature sensor 15 are installed between the outlet of the solar water heater 12 and the inlet of the second heat exchange coil 13. The solenoid valve 14 is used to control the water circuit. When the solenoid valve 14 is open, the solar module starts supplying heat; when the solenoid valve 14 is closed, the solar energy stops supplying heat. The second temperature sensor 15 is used to detect the outlet water temperature of the solar water heater 12, which is the heating temperature of the water tank 1. A third temperature sensor 16 is provided between the return water inlet of the solar water heater 12 and the outlet water inlet of the second heat exchange coil 13. The third temperature sensor 16 is used to detect the return water temperature of the solar water heater 12. In addition, the solar water heater 12 is provided with an outer ring temperature sensor 17 for detecting the outer ring temperature.

[0069] The following is combined Figures 2-4 The operating modes of the solar heat pump unit provided by this invention are described, mainly including: solar operation mode, heat pump operation mode, and combined solar and heat pump operation mode. The flow direction of the heat exchange medium is shown by the arrows in the figure.

[0070] like Figure 2 As shown, the solar operation mode is as follows: hot water in the solar water heater 12 is pumped into the second heat exchange coil 13 to heat the water in the water tank 1, and then flows back to the solar water heater 12.

[0071] like Figure 3 As shown, in the heat pump operation mode: the refrigerant in the outdoor unit 7 flows through the pipe side of the indoor heat exchanger 7 to heat the water flowing into the shell side of the indoor heat exchanger 7 in the first heat exchange coil 9. The refrigerant after heat exchange flows back to the outdoor unit 7, while the hot water circulating in the first heat exchange coil 9 heats the water in the water tank 1.

[0072] like Figure 4 As shown, the solar-heat pump combined operation mode: simultaneously operates the above-mentioned solar operation mode and heat pump operation mode.

[0073] Therefore, the solar heat pump unit provided in this embodiment of the invention has the above-mentioned multiple operating modes, and can achieve the purpose of saving electricity when using solar energy for heating.

[0074] According to one embodiment of the present invention, referring to Figure 5 As shown, the present invention provides a control method for a solar heat pump unit according to the above embodiments, which mainly includes the following steps:

[0075] S100: Obtain the setting mode of the solar heat pump unit.

[0076] S200: Control the heat pump module and / or solar module to start operation according to the setting mode of the solar heat pump unit.

[0077] The solar heat pump unit has multiple setting modes, and the user's demand for hot water in the water tank varies in these modes. Multiple setting modes can be preset according to the user's different demand for hot water in the water tank. The user can send the corresponding mode setting command to the solar heat pump unit according to their own demand for hot water, i.e. whether they need hot water urgently. When the solar heat pump unit receives the mode setting command, it enters the corresponding setting mode.

[0078] For example, when users urgently need hot water, i.e., when the demand is high, the solar heat pump unit can be controlled to operate in a combined solar heat pump mode.

[0079] When users are not in a hurry to use hot water, i.e., when the demand is low, they can control the solar heat pump unit to operate in solar mode or heat pump mode.

[0080] The control method for a solar heat pump unit provided in this invention can control at least one of the heat pump module and the solar module to operate according to the user's settings, realizing solar operation mode, heat pump operation mode, and combined solar and heat pump operation mode. Therefore, by combining a heat pump and solar energy as a heat source, this invention offers multiple operating modes, achieving energy savings. Furthermore, it can match the corresponding operating mode according to the user's settings, making it widely applicable and effectively improving the user experience.

[0081] According to one embodiment of the present invention, the solar heat pump unit has three setting modes: a first setting mode, a second setting mode, and a third setting mode. The demand level in the first setting mode is greater than that in the second setting mode, and the demand level in the second setting mode is greater than that in the third setting mode. Therefore, the first setting mode can also be called the powerful mode, the second setting mode can also be called the normal mode, and the third setting mode can also be called the gentle mode.

[0082] Reference Figure 6 As shown, step S200, which controls the heat pump module and / or solar module to start operation according to the setting mode of the solar heat pump unit, includes:

[0083] S201. Determine the setting mode of the solar heat pump unit as the first setting mode, control the heat pump module to start operation, and control the opening and closing of the solar module according to the preset heating conditions.

[0084] Specifically, the solar heat pump unit is set to the first setting mode, and the current water temperature of the water tank and the heating temperature of the solar module are detected. If the heating temperature of the solar module is greater than the current water temperature of the water tank, the solar module is turned on and running. At this time, the heat pump module and the solar module work together to heat the water tank. If the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, the solar module is turned off. At this time, the heat pump module heats the water tank alone.

[0085] When the solar heat pump unit is set to the first setting mode, i.e., the strong mode, it indicates that the user's demand for hot water is high. At this time, there is no need to consider the target preset temperature of the water tank. That is, at any target preset temperature, the heat pump module must be turned on and running. When the heating temperature of the solar module is greater than the current water temperature of the water tank, the solar module is also turned on to increase the heating speed. When the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, the solar module should be turned off to avoid lowering the hot water temperature in the water tank.

[0086] S202. Determine the setting mode of the solar heat pump unit as the second setting mode, and control the opening and closing of the heat pump module and the solar module according to the target preset temperature of water tank heating and the preset heating conditions.

[0087] Specifically, when the solar heat pump unit is set to the second setting mode, the target preset temperature for heating the water tank is determined to be either the first target preset temperature or the second target preset temperature. If the heating temperature of the solar module is greater than the current water temperature of the water tank, the solar module is turned on and the heat pump module is turned off. If the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, the solar module is turned off and the heat pump module is turned on.

[0088] The target preset temperature for water tank heating is set to the third target preset temperature. The heat pump module is then turned on. If the heating temperature of the solar module is greater than the current water temperature in the water tank, the solar module is turned on. If the heating temperature of the solar module is less than or equal to the current water temperature in the water tank, the solar module is turned off.

[0089] Among them, the first target preset temperature is less than the second target preset temperature, and the second target preset temperature is less than the third target preset temperature. That is, the first target preset temperature T1 is a low water temperature, for example, 20℃≤T1<40℃; the second target preset temperature T2 is a medium water temperature, for example, 40℃≤T1<60℃; and the third target preset temperature T3 is a high water temperature, for example, 60℃≤T1≤75℃.

[0090] When the solar heat pump unit is set to the second setting mode, i.e., the normal mode, it indicates that the user's demand for hot water is normal. At this time, the temperature is controlled according to the user's required water temperature.

[0091] When the user sets the target preset temperature of the water tank to low or medium water temperature, it is determined whether the solar module meets the preset heating conditions. If it does, the solar module is controlled to operate first to save electricity; otherwise, the heat pump module is controlled to operate to ensure the heating effect.

[0092] When the user sets the target preset temperature of the water tank to high water temperature, the heat pump module is controlled to run, and it is determined whether the solar module meets the preset heating conditions. If it does, the solar module is controlled to run in conjunction; otherwise, the solar module is controlled to shut down to avoid lowering the temperature of the hot water in the water tank, so that the water in the water tank can reach the high water temperature required by the user.

[0093] S203. Determine the setting mode of the solar heat pump unit as the third setting mode, and control the opening and closing of the heat pump module and the solar module according to the preset heating conditions.

[0094] Specifically, if the heating temperature of the solar module is greater than the current water temperature of the water tank, the solar module is turned on and the heat pump module is turned off; if the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, the solar module is turned off and the heat pump module is turned on.

[0095] When the solar heat pump unit is set to the third setting mode, namely the gentle mode, it indicates that the user's demand for hot water is low. At this time, there is no need to consider the target preset temperature of the water tank heating. That is, at any target preset temperature, it is determined whether the solar module meets the preset heating conditions. If it does, the operation of the solar module is controlled first to achieve the purpose of saving electricity. Otherwise, the operation of the heat pump module is controlled to ensure the heating effect.

[0096] According to one embodiment of the present invention, referring to Figure 7 As shown, the control method for the solar heat pump unit of the present invention, in step S200 of controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit, further includes:

[0097] S204. Set the solar heat pump unit to the first setting mode and control the heat pump module to operate at the highest operating load.

[0098] Specifically, when the solar heat pump unit is set to the first setting mode, i.e. the strong mode, it indicates that the user urgently needs hot water. The heat pump module is controlled to start running at the highest operating load, i.e., to operate at the highest capacity, so as to quickly meet the user's hot water needs.

[0099] S205. Determine that the solar heat pump unit is set to the second or third setting mode, and when the heat pump module is turned on, detect the grid input signal of the heat pump module.

[0100] Among them, the grid input signal can be the grid input power signal and / or the electricity price signal. For example, it can be divided into three levels of signals: Level A signal: the grid input power is normal and the electricity price is normal; Level B signal: the grid input power is sufficient and the electricity price is low; Level C signal: the grid input power is insufficient and the electricity price is high.

[0101] S206. Control the operating load of the heat pump module according to the power grid input signal of the heat pump module.

[0102] When the solar heat pump unit is set to the second or third setting mode, i.e., normal mode or gentle mode, it indicates that the user is not in a hurry to use hot water. When the heat pump module is turned on, the operating load of the heat pump module is further switched according to the grid input signal of the heat pump module, which can save energy to the greatest extent.

[0103] Specifically, the solar heat pump unit is set to the second setting mode. If the grid input signal is the first grid input signal or the second grid input signal, the heat pump module is controlled to operate at the first operating load. If the grid input signal is the third grid input signal, the heat pump module is controlled to operate at the third operating load. The electricity price of the first grid input signal is greater than that of the second grid input signal and less than that of the third grid input signal, i.e., the first grid input signal is a Class A signal, the second grid input signal is a Class B signal, and the third grid input signal is a Class C signal. The first operating load is greater than the third operating load and less than the maximum operating load.

[0104] The solar heat pump unit is set to the third setting mode. If the grid input signal is the first grid input signal, the heat pump module is controlled to operate at the first operating load. If the grid input signal is the second grid input signal, the heat pump module is controlled to operate at the second operating load. If the grid input signal is the third grid input signal, the heat pump module is controlled to operate at the third operating load. Among them, the first operating load is less than the second operating load, and the second operating load is less than the highest operating load. That is, the first operating load is the normal operating load, the second operating load is the high operating load, and the third operating load is the low operating load.

[0105] When the solar heat pump unit is set to the second setting mode, if the grid input signal of the heat pump module is a level A signal or a level B signal, that is, a normal electricity price or a low electricity price, the heat pump module is controlled to operate normally. If it is a level C signal, that is, a high electricity price, the heat pump module is controlled to operate at low output to achieve the purpose of energy saving.

[0106] When the solar heat pump unit is set to the third setting mode, if the grid input signal of the heat pump module is a level A signal, that is, a normal electricity price, the heat pump module is controlled to operate normally; if it is a level B signal, that is, a lower electricity price, the heat pump module is controlled to operate at high output; if it is a level C signal, that is, a higher electricity price, the heat pump module is controlled to operate at low output to achieve the purpose of energy saving.

[0107] Therefore, the control method for solar heat pump units provided in this embodiment of the invention combines a heat pump with solar energy as a heat source, prioritizes the operation of solar energy to heat the water in the water tank, and simultaneously detects the grid input signal in real time to switch the output capacity of the heat pump module. This method can meet user needs while maximizing energy savings and achieving the goal of power conservation.

[0108] The control device for the solar heat pump unit provided by the present invention is described below. The control device for the solar heat pump unit described below can be referred to in correspondence with the control method for the solar heat pump unit described above.

[0109] According to one embodiment of the present invention, referring to Figure 8As shown, the present invention also provides a control device for a solar heat pump unit. The solar heat pump unit includes a water tank 1 and a heat pump module and a solar module for heating the water tank 1. The control device mainly includes an acquisition module 18 and a control module 19. The acquisition module 18 is used to acquire the setting mode of the solar heat pump unit. The control module 19 is used to control the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit. The solar heat pump unit has multiple setting modes, and the user's demand for hot water in the water tank is different in the multiple setting modes.

[0110] The control device for the solar heat pump unit provided in this embodiment of the invention can match the corresponding operating mode according to the user's setting requirements, control the operation of at least one of the heat pump module and the solar module, has multiple operating modes, can achieve the purpose of saving electricity, and has a wide range of applications, thereby effectively improving the user experience.

[0111] According to one embodiment of the present invention, referring to Figure 9 As shown, the present invention also provides a solar heat pump unit, which may include: a processor 20, a communication interface 21, a memory 22, and a communication bus 23, wherein the processor 20, the communication interface 21, and the memory 22 communicate with each other through the communication bus 23. The processor 20 can call logical instructions in the memory 22 to execute a control method for the solar heat pump unit. The solar heat pump unit includes: a water tank and a heat pump module and a solar module for heating the water tank. The control method includes: acquiring the setting mode of the solar heat pump unit; and controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit. The solar heat pump unit has multiple setting modes, and in these multiple setting modes, the user's demand for hot water in the water tank varies.

[0112] Furthermore, the logical instructions in the aforementioned memory 22 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0113] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the control method of the solar heat pump unit provided by the above methods. The solar heat pump unit includes a water tank and a heat pump module and a solar module for heating the water tank. The control method includes: acquiring the setting mode of the solar heat pump unit; and controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit. The solar heat pump unit has multiple setting modes, and in each of the multiple setting modes, the user's demand for hot water in the water tank varies.

[0114] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements a control method for a solar heat pump unit provided by the above methods. The solar heat pump unit includes: a water tank and a heat pump module and a solar module for heating the water tank. The control method includes: acquiring a setting mode of the solar heat pump unit; and controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit. The solar heat pump unit has multiple setting modes, and in these multiple setting modes, the user's demand for hot water in the water tank varies.

[0115] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0116] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method of a solar heat pump unit, characterized by, The solar heat pump unit comprises a water tank and a heat pump module and a solar module for supplying heat to the water tank, and the control method comprises: obtaining a setting mode of the solar heat pump unit; controlling the heat pump module and / or the solar module to start running according to the setting mode of the solar heat pump unit; wherein the solar heat pump unit has multiple setting modes, and in multiple setting modes, the demand degree of the user for hot water in the water tank is different, and the demand degree refers to whether the user is in urgent need of hot water; the step of controlling the heat pump module and / or the solar module to start running according to the setting mode of the solar heat pump unit comprises: determining that the setting mode of the solar heat pump unit is a first setting mode, controlling the heat pump module to start running, and controlling the opening and closing of the solar module according to the heat supply preset condition; determining that the setting mode of the solar heat pump unit is a second setting mode, and controlling the opening and closing of the heat pump module and the solar module according to the target preset temperature of the water tank heating and the heat supply preset condition; determining that the setting mode of the solar heat pump unit is a third setting mode, and controlling the opening and closing of the heat pump module and the solar module according to the heat supply preset condition; wherein the demand degree of the first setting mode is greater than that of the second setting mode, and the demand degree of the second setting mode is greater than that of the third setting mode; further comprising: determining that the setting mode of the solar heat pump unit is a first setting mode, and controlling the heat pump module to run at the highest running load; determining that the setting mode of the solar heat pump unit is a second setting mode or a third setting mode, and detecting the power grid input signal of the heat pump module when the heat pump module starts running; controlling the running load of the heat pump module according to the power grid input signal of the heat pump module; the step of controlling the running load of the heat pump module according to the power grid input signal of the heat pump module comprises: determining that the setting mode of the solar heat pump unit is a second setting mode, and if the power grid input signal is a first power grid input signal or a second power grid input signal, controlling the heat pump module to run at a first running load, and if the power grid input signal is a third power grid input signal, controlling the heat pump module to run at a third running load; wherein the price of the first power grid input signal is greater than that of the second power grid input signal and less than that of the third power grid input signal; the first running load is greater than the third running load and less than the highest running load; the step of controlling the running load of the heat pump module according to the power grid input signal of the heat pump module further comprises: determining that the setting mode of the solar heat pump unit is a third setting mode, and if the power grid input signal is a first power grid input signal, controlling the heat pump module to run at a first running load, if the power grid input signal is a second power grid input signal, controlling the heat pump module to run at a second running load, and if the power grid input signal is a third power grid input signal, controlling the heat pump module to run at a third running load; The first operation load is less than the second operation load, and the second operation load is less than the highest operation load.

2. The control method of a solar heat pump unit according to claim 1, characterized by, According to the heating preset condition, the step of controlling the opening and closing of the solar module comprises: detecting the current water temperature of the water tank and the heating temperature of the solar module; determining that the heating temperature of the solar module is greater than the current water temperature of the water tank, and controlling the solar module to start operation; determining that the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, and controlling the solar module to be closed.

3. The control method of a solar heat pump unit according to claim 2, characterized by, According to the target preset temperature of the water tank heating and the heating preset condition, the step of controlling the opening and closing of the heat pump module and the solar module comprises: determining that the target preset temperature of the water tank heating is the first target preset temperature or the second target preset temperature, if the heating temperature of the solar module is greater than the current water temperature of the water tank, controlling the solar module to start operation, and if the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, controlling the solar module to be closed, and the heat pump module starts operation; wherein the first target preset temperature is less than the second target preset temperature.

4. The control method of a solar heat pump unit according to claim 3, characterized by, According to the target preset temperature of the water tank heating and the heating preset condition, the step of controlling the opening and closing of the heat pump module and the solar module further comprises: determining that the target preset temperature of the water tank heating is the third target preset temperature, controlling the heat pump module to start operation, and if the heating temperature of the solar module is greater than the current water temperature of the water tank, controlling the solar module to start operation, and if the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, controlling the solar module to be closed; wherein the second target preset temperature is less than the third target preset temperature.

5. The control method of a solar heat pump unit according to claim 2, characterized by, According to the heating preset condition, the step of controlling the opening and closing of the heat pump module and the solar module comprises: determining that the heating temperature of the solar module is greater than the current water temperature of the water tank, and controlling the solar module to start operation, and the heat pump module to be closed; determining that the heating temperature of the solar module is less than or equal to the current water temperature of the water tank, and controlling the solar module to be closed, and the heat pump module to start operation.

6. A control device for a solar heat pump unit, characterized by The solar heat pump unit comprises a water tank and a heat pump module and a solar module for heating the water tank, and the control device comprises: an acquisition module for acquiring a setting mode of the solar heat pump unit; a control module for controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit; wherein the solar heat pump unit has a plurality of setting modes, and in the plurality of setting modes, the degree of user demand for hot water in the water tank is different, and the degree of demand refers to whether the user is in urgent need of hot water; the step of controlling the heat pump module and / or the solar module to start operation according to the setting mode of the solar heat pump unit comprises: determining that the setting mode of the solar heat pump unit is a first setting mode, controlling the heat pump module to start running, and according to a preset heating condition, controlling the opening and closing of the solar module; determining that the setting mode of the solar heat pump unit is a second setting mode, according to the target preset temperature of the water tank heating and the preset heating condition, controlling the opening and closing of the heat pump module and the solar module; determining that the setting mode of the solar heat pump unit is a third setting mode, according to the preset heating condition, controlling the opening and closing of the heat pump module and the solar module; wherein the demand degree of the first setting mode is greater than the demand degree of the second setting mode, and the demand degree of the second setting mode is greater than the demand degree of the third setting mode; further comprising: determining that the setting mode of the solar heat pump unit is a first setting mode, and controlling the heat pump module to run at the highest load; determining that the setting mode of the solar heat pump unit is a second setting mode or a third setting mode, and when the heat pump module is started, detecting the grid input signal of the heat pump module; controlling the load of the heat pump module according to the grid input signal of the heat pump module; controlling the load of the heat pump module according to the grid input signal of the heat pump module, comprising: determining that the setting mode of the solar heat pump unit is a second setting mode, if the grid input signal is a first grid input signal or a second grid input signal, controlling the heat pump module to run at a first load, and if the grid input signal is a third grid input signal, controlling the heat pump module to run at a third load; wherein the price of the first grid input signal is greater than the price of the second grid input signal and less than the price of the third grid input signal, and the first load is greater than the third load and less than the highest load; controlling the load of the heat pump module according to the grid input signal of the heat pump module, further comprising: determining that the setting mode of the solar heat pump unit is a third setting mode, if the grid input signal is a first grid input signal, controlling the heat pump module to run at a first load, if the grid input signal is a second grid input signal, controlling the heat pump module to run at a second load, and if the grid input signal is a third grid input signal, controlling the heat pump module to run at a third load; wherein the first load is less than the second load, and the second load is less than the highest load.

7. A solar heat pump unit comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to realize the control method of the solar heat pump unit according to any one of claims 1-5.

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