Solar frequency conversion water heater and heating method thereof

Abstract

The invention provides a solar frequency conversion water heater and a heating method thereof, and relates to the technical field of water heaters. The heating method of the solar variable-frequency water heater comprises the following steps: establishing heat pump heating speed curves corresponding to different environment temperatures without illumination to obtain the current environment temperature, the current heating speed and the current heat pump frequency; the current heating speed and the current environment temperature correspond to the heat pump heating speed in the heat pump heating speed curve, and whether the current heat pump frequency needs to be adjusted or not is judged according to the comparison result, so that the heat pump frequency is adaptively adjusted according to the current sunlight intensity; the problem of energy waste caused by high frequency of the heat pump when sunlight is too strong or the problem of insufficient hot water supply caused by low frequency of the heat pump when sunlight is weak is solved, the energy utilization efficiency is improved, and stable hot water supply is ensured.

Description

Technical Field

[0001] This application belongs to the field of water heater technology, specifically relating to a solar variable frequency water heater and its heating method. Background Art

[0002] Solar energy, as a clean and renewable energy source, has been widely applied. Solar heat pump water heaters, as an important form of solar energy utilization, are gradually becoming the mainstream in the market. Solar inverter water heaters can heat water and produce hot water using both solar energy and a heat pump, thereby reducing operating costs.

[0003] In related technologies, solar inverter water heaters utilize solar energy as the primary energy source. They collect solar radiation through collectors and convert it into heat energy to heat water in a storage tank. Simultaneously, solar inverter water heaters can adjust the operating frequency of the heat pump according to the ambient temperature, thereby achieving an efficient and stable hot water supply.

[0004] However, since the heating frequency of the heat pump is preset in the outdoor unit for each ambient temperature range, it is impossible to adjust the heating frequency adaptively according to the intensity of sunlight, which leads to energy waste or insufficient hot water supply. Summary of the Invention

[0005] This invention provides a solar variable frequency water heater and its heating method to solve the problem of energy waste or insufficient hot water supply caused by the inability of solar variable frequency water heaters to adjust the frequency according to the intensity of sunlight.

[0006] In a first aspect, this application provides a heating method for a solar inverter water heater, comprising:

[0007] Establish heat pump heating rate curves corresponding to different ambient temperatures in the absence of light;

[0008] Obtain the current ambient temperature, current heating rate, and current heat pump frequency;

[0009] Compare the current heating rate with the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve;

[0010] If the current heating rate is less than the heat pump heating rate, then the current heating rate is updated to the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve, and the above steps are repeated.

[0011] If the current heating rate is greater than or equal to the heat pump heating rate, then the current heat pump frequency is adjusted.

[0012] In the preferred technical solution of the heating method for the above-mentioned solar inverter water heater, it also includes:

[0013] Determine whether the heat pump heating rate curve includes the current ambient temperature;

[0014] If not, the current ambient temperature and the current heating rate are recorded in the heat pump heating rate curve;

[0015] If so, compare the current heating rate with the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve.

[0016] In the preferred embodiment of the heating method for the above-mentioned solar inverter water heater, the step of adjusting the current heat pump frequency if the current heating speed is greater than or equal to the heat pump heating speed includes:

[0017] Calculate the ratio of the heat pump heating rate to the current heating rate;

[0018] Adjust the current heat pump frequency to the value obtained by multiplying the current heat pump frequency by the ratio.

[0019] In the preferred embodiment of the heating method for the above-mentioned solar inverter water heater, the method further includes:

[0020] After a set time interval, the current heating rate and the current heat pump frequency are reacquired.

[0021] Calculate the ratio of the heat pump heating rate to the current heating rate;

[0022] Adjust the current heat pump frequency to the value obtained by multiplying the current heat pump frequency by the ratio.

[0023] Secondly, this application provides a control device, comprising:

[0024] A module is created to establish the heat pump heating rate curves corresponding to different ambient temperatures in the absence of light.

[0025] The acquisition module is used to acquire the current ambient temperature, the current heating rate, the current heat pump frequency, and the heat pump heating rate corresponding to the current ambient temperature in the heat pump heating rate curve.

[0026] The comparison module is used to compare the current heating rate with the heat pump heating rate;

[0027] The heat pump adjustment module adjusts the heat pump frequency based on the comparison result of the comparison module.

[0028] In a preferred embodiment of the above control device, a judgment module is further included. The judgment module is used to determine whether the heat pump heating rate curve includes the current ambient temperature. The establishment module is also used to update the current ambient temperature and the corresponding current heating rate into the heat pump heating rate curve when the heat pump heating rate curve does not include the current ambient temperature.

[0029] In a preferred embodiment of the control device described above, a calculation module is further included. The calculation module is used to calculate the adjusted current heat pump frequency and send an adjustment command to the heat pump adjustment module.

[0030] Thirdly, this application provides a solar variable frequency water heater, including a solar heat collection device, a water tank, a heat pump, and a control device as described in any one of the second aspects, wherein the heat pump and the solar heat collection device are both connected to the water tank, and the control device is connected to the heat pump.

[0031] In the preferred embodiment of the above-mentioned solar inverter water heater, a processor and a memory are further included. The processor is used to run code to execute the heating method of the solar inverter water heater according to any one of the first aspects, and the memory is used to store the code for the processor to execute the method.

[0032] Fourthly, this application provides a storage medium storing heating execution instructions, which, when executed by a solar inverter water heater, are used to implement the heating method of the solar inverter water heater as described in any of the first aspects.

[0033] The solar inverter water heater and its heating method provided in this application establish heat pump heating rate curves corresponding to different ambient temperatures under no sunlight conditions. The method obtains the current ambient temperature, current heating rate, and current heat pump frequency. It compares the current heating rate with the corresponding heat pump heating rate within the current ambient temperature curve and determines whether the current heat pump frequency needs adjustment based on the comparison results. This achieves adaptive adjustment of the heat pump frequency according to the intensity of sunlight, avoiding energy waste caused by a high heat pump frequency when sunlight is too strong or insufficient hot water supply caused by a low heat pump frequency when sunlight is weak. This improves energy efficiency and ensures a stable hot water supply. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0035] Figure 1 The flow chart of the heating method for the solar inverter water heater provided in the embodiments of this application Figure 1 ;

[0036] Figure 2 The flow chart of the heating method for the solar inverter water heater provided in the embodiments of this application Figure 2 ;

[0037] Figure 3 The flow chart of the heating method for the solar inverter water heater provided in the embodiments of this application Figure 3 ;

[0038] Figure 4 This is a schematic diagram of the structure of the control device provided in the embodiments of this application;

[0039] Figure 5 A schematic diagram of the hardware structure of a solar inverter water heater provided in an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 10-Building modules;

[0042] 20 - Acquisition Module;

[0043] 30 - Comparison Module;

[0044] 40 - Judgment Module;

[0045] 50 - Calculation Module;

[0046] 60-Heat pump adjustment module;

[0047] 100-bus;

[0048] 200 - Memory;

[0049] 300-processor.

[0050] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0053] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0054] The preferred technical solution of the solar variable frequency water heater and its heating method of the present invention is described below.

[0055] Solar energy, as a clean and renewable energy source, has been widely applied. Solar heat pump water heaters, as an important form of solar energy utilization, are gradually becoming the mainstream in the market. Solar inverter water heaters can heat water and produce hot water using both solar energy and a heat pump, thereby reducing operating costs.

[0056] In related technologies, solar inverter water heaters utilize solar energy as the primary energy source. They collect solar radiation through collectors and convert it into heat energy to heat water in a storage tank. Simultaneously, solar inverter water heaters can adjust the operating frequency of the heat pump according to the ambient temperature, thereby achieving an efficient and stable hot water supply.

[0057] However, since the heating frequency of the heat pump is preset in the outdoor unit for each ambient temperature range, it is impossible to adjust the heating frequency adaptively according to the intensity of sunlight, which leads to energy waste or insufficient hot water supply.

[0058] Please refer to Figure 1 To address the aforementioned problems, this embodiment provides a heating method for a solar inverter water heater, comprising:

[0059] S101 establishes the heat pump heating rate curves corresponding to different ambient temperatures under no light conditions.

[0060] Because the heating frequency of a heat pump is closely related to the ambient temperature, at lower ambient temperatures, the heat pump requires more time and energy to extract heat from the environment and heat the water. Conversely, at higher ambient temperatures, the heat pump can more easily extract heat from the warmer air, thus heating the water more quickly. Therefore, this embodiment establishes heat pump heating rate curves for different ambient temperatures under no-light conditions to ensure that the heat pump can operate at the optimal heating frequency under various ambient temperatures.

[0061] Specifically, this embodiment obtains the heating rate and heating efficiency of the heat pump at different ambient temperatures by recording the time required for the heat pump to heat to a specific temperature, the electrical energy consumed, and other relevant parameters under different ambient temperatures in the absence of light, thereby establishing the heat pump heating rate curve corresponding to different ambient temperatures.

[0062] It should be noted that this embodiment does not impose any restrictions on the experimental process or method for establishing the heat pump heating rate curves corresponding to different ambient temperatures in the absence of light. The method can be selected adaptively according to actual needs.

[0063] S102, obtain the current ambient temperature, current heating rate and current heat pump frequency.

[0064] Specifically, in this embodiment, the current ambient temperature and current heat pump frequency can be obtained through a built-in temperature sensor and a corresponding frequency acquisition device, and the current heating rate can be obtained by detecting the rate of change of water temperature. This embodiment does not impose any limitations on the specific acquisition method.

[0065] S103, compare the current heating rate with the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve.

[0066] After obtaining the current ambient temperature, current heating rate, and current heat pump frequency, the heat pump heating rate is obtained from the heat pump heating rate curve established in step S101 based on the current ambient temperature. The difference between the current heating rate and the heat pump heating rate is compared, and subsequent commands are executed based on the comparison result.

[0067] S104. If the current heating rate is less than the heat pump heating rate, update the current heating rate to the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve, and repeat the above steps.

[0068] Specifically, if the current heating rate is less than the heat pump heating rate, it means that under the same ambient temperature, the heat pump is sufficient to reach the set temperature within the set time using the current heating rate. Therefore, the current heating rate is updated to the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve, as the minimum heating rate required for the heat pump to reach the set temperature within the set time under the current ambient temperature, so as to reduce energy consumption without affecting the hot water supply.

[0069] S105, If the current heating rate is greater than or equal to the heat pump heating rate, adjust the current heat pump frequency.

[0070] Specifically, when the current heating rate is equal to the heat pump heating rate, it means that operating at the current heating rate can reach the set temperature within a set time. At this time, the heat pump frequency is the minimum operating frequency required to reach the preset water temperature on time. Therefore, when the current heating rate is equal to the heat pump heating rate, the current heat pump frequency is maintained to ensure that the system can reach the preset water temperature on time while achieving efficient energy utilization.

[0071] Under sunlight, direct sunlight shines on the solar collector, converting solar energy into heat to heat the water in the tank. The combined heating effects of the solar energy and the heat pump result in a significantly faster heating rate under sunlight compared to the same ambient temperature without sunlight, allowing the water in the tank to reach the preset temperature before the preset time. However, after reaching the preset temperature, additional energy is needed to maintain the temperature before the preset time has elapsed. Furthermore, under strong solar radiation, the water in the tank may continue to heat, leading to energy waste.

[0072] To address the aforementioned issues, this embodiment adjusts the current heat pump frequency when the current heating rate exceeds the heat pump's heating rate. This ensures that the current heating rate, under the combined action of the heat pump and solar energy, matches the heat pump's heating rate, thus avoiding energy waste caused by the water temperature reaching the set temperature too quickly. Furthermore, with the help of solar energy, the heat pump requires only a lower frequency to achieve the same heating rate as in a dark environment, thereby saving energy consumption.

[0073] Meanwhile, it should be noted that, in order to further reduce energy consumption, the heating method of the solar inverter water heater provided in this embodiment can operate under sunlight. For example, firstly, heating data of water heaters of the same model nationwide under both sunlight and no sunlight conditions are collected via networked big data, thereby forming heat pump heating speed curves under different operating conditions. Secondly, after the current environment is under sunlight, the current ambient temperature, current heating speed, and current heat pump frequency are obtained, and subsequent steps are executed.

[0074] Specifically, since the current heating rate in a dark environment depends entirely on the operation of the heat pump, and no other heat source or factors are at play, the current heating rate usually matches the value in the heat pump heating rate curve. Therefore, it is not necessary to repeatedly obtain and compare the current heating rate with the heat pump heating rate corresponding to the current ambient temperature in the heat pump heating rate curve, thereby saving energy consumption.

[0075] Specifically, in this embodiment, the current environment can be determined by repeatedly acquiring the current ambient temperature and comparing the differences, or the current heating rate can be determined by repeatedly acquiring the current heating rate and comparing the differences. This embodiment does not impose any restrictions on this.

[0076] Simultaneously, the heating method of the solar inverter water heater provided in this embodiment can also be operated according to the user's usage time. Specifically, since most users do not need hot water at night, the solar inverter water heater can be shut down at night and run the heating method of the solar inverter water heater provided in this embodiment from 10:00 to 18:00 during the day, and automatically stop after the water temperature reaches the preset temperature, thereby further saving energy consumption and improving the user experience.

[0077] Furthermore, it should be noted that this embodiment does not impose any restrictions on the operating time of the heating method of the solar inverter water heater, and can be adapted to meet actual needs.

[0078] Please refer to Figure 1 and Figure 2 Furthermore, in an optional embodiment, the heating method of the solar inverter water heater further includes:

[0079] S201, determine whether the heat pump heating rate curve includes the current ambient temperature.

[0080] Specifically, after obtaining the current ambient temperature, the current ambient temperature is compared with the temperature range on the heat pump heating rate curve to determine whether the current ambient temperature falls within the temperature range on the heat pump heating rate curve, so as to execute subsequent commands.

[0081] S202, if not, record the current ambient temperature and current heating rate in the heat pump heating rate curve.

[0082] Specifically, if the heat pump heating rate curve does not include the current ambient temperature, it means that the current ambient temperature and its corresponding heat pump heating rate are not within the heat pump heating rate curve, and therefore subsequent commands cannot be executed. Therefore, the current ambient temperature and current heating rate are recorded within the heat pump heating rate curve to improve the heat pump rate curve and expand its range.

[0083] S203, if so, compare the current heating rate with the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve.

[0084] Specifically, if the heat pump heating rate curve includes the current ambient temperature, then the heat pump heating rate is obtained from the heat pump heating rate curve based on the current ambient temperature, and the difference between the current heating rate and the heat pump heating rate is compared, and subsequent commands are executed based on the comparison result.

[0085] Please refer to Figure 1 and Figure 3 Further, in an optional embodiment, if the current heating rate is greater than or equal to the heat pump heating rate, then adjusting the current heat pump frequency in step S105 includes:

[0086] S1051, calculate the ratio of the heat pump heating rate to the current heating rate.

[0087] Specifically, if the current heating rate is greater than or equal to the heat pump heating rate, the ratio of the heat pump heating rate to the current heating rate is calculated to assess the relative role of the heat pump in the current operating environment. If the current heating rate equals the heat pump heating rate, and the ratio is one, it means that the required heating is entirely provided by the heat pump, and no external factors (such as sunlight) affect the heating rate. In other words, the current heating rate depends entirely on the heat pump's operation, and no other heat source or factor is at play. If the current heating rate is greater than the heat pump heating rate, and the ratio is less than one, it means that the required heating is provided by both the heat pump and solar energy. Therefore, the current heat pump frequency needs to be adjusted downwards to reduce energy consumption.

[0088] S1052, adjust the current heat pump frequency to the value obtained by multiplying the current heat pump frequency by a ratio.

[0089] Specifically, after obtaining the ratio of the heat pump heating rate to the current heating rate, the current heat pump frequency is adjusted to the value obtained by multiplying the current heat pump frequency by the ratio. This proportionally adjusts the heat pump's operating frequency to make it closer to the frequency required to meet the current actual heating needs, thereby avoiding the energy waste caused by overheating and achieving more accurate and efficient control of the heat pump.

[0090] Furthermore, in an optional embodiment, the heating method of the solar inverter water heater further includes:

[0091] S106, after a set interval, reacquire the current heating rate and current heat pump frequency.

[0092] Specifically, since the intensity of sunlight varies at different times, and the current heating rate is affected by the intensity of sunlight, it is necessary to re-acquire the current heating rate and the current heat pump frequency at set intervals to avoid problems such as insufficient hot water or energy waste caused by changes in the current heating rate due to changes in the intensity of sunlight.

[0093] The set time can be selected adaptively according to needs, and this embodiment does not impose any restrictions on it. In this embodiment, the set time is 15 minutes, that is, after adjusting the current heat pump frequency, the current heating rate and the current heat pump frequency are reacquired every 15 minutes.

[0094] S107, calculate the ratio of the heat pump heating rate to the current heating rate.

[0095] S108, adjust the current heat pump frequency to the value obtained by multiplying the current heat pump frequency by a ratio.

[0096] Specifically, once the current heat pump frequency is adjusted for the first time, it indicates that the solar inverter water heater is currently operating under conditions of sunlight. Therefore, barring any malfunctions or other issues, the current heating speed is achieved through the combined action of solar energy and the heat pump, and is typically greater than the heat pump's heating speed. Thus, after the initial adjustment of the current heat pump frequency, there is no need to repeatedly compare the current heating speed with the heat pump's heating speed. Simply calculate the ratio of the heat pump's heating speed to the current heating speed and then make the adjustment accordingly.

[0097] Meanwhile, if there is a malfunction in the solar panel structure or other components, causing the current heating rate to be lower than the heat pump heating rate, the ratio of the heat pump heating rate to the current heating rate will be greater than one. Therefore, adjusting the current heat pump frequency to the value obtained by multiplying the current heat pump frequency by this ratio is equivalent to increasing the current heat pump frequency, allowing the heat pump to output more heat to compensate for the lack of heating from the solar panel. This ensures that the system can still provide sufficient heat to meet heating needs even when the solar panel malfunctions.

[0098] Please refer to Figure 4 This embodiment also provides a control device, including: a setup module 10, used to establish heat pump heating rate curves corresponding to different ambient temperatures in the absence of light; an acquisition module 20, used to acquire the current ambient temperature, the current heating rate, the current heat pump frequency, and the heat pump heating rate corresponding to the current ambient temperature in the heat pump heating rate curve; a comparison module 30, used to compare the current heating rate and the heat pump heating rate; and a heat pump adjustment module 60, used to adjust the heat pump frequency according to the comparison result of the comparison module 30.

[0099] Specifically, this embodiment obtains the heating rate and heating efficiency of the heat pump at different ambient temperatures by recording the time required for the heat pump to heat to a specific temperature, the electrical energy consumed, and other relevant parameters under different ambient temperatures in the absence of light, thereby establishing the heat pump heating rate curve corresponding to different ambient temperatures.

[0100] After establishing the heat pump heating rate curve in module 10, the current ambient temperature, current heating rate, current heat pump frequency, and the corresponding heat pump heating rate in the heat pump heating rate curve are obtained by module 20. Then, the current heating rate and the heat pump heating rate are compared by module 30. Finally, the heat pump adjustment module 60 adjusts the heat pump frequency according to the comparison result of module 30. This realizes the adaptive adjustment of the heat pump frequency according to the current sunlight intensity, avoiding the energy waste caused by the high heat pump frequency when the sunlight is too strong or the insufficient hot water supply caused by the low heat pump frequency when the sunlight is weak. This improves energy utilization efficiency and ensures a stable hot water supply.

[0101] Furthermore, in an optional embodiment, the control device further includes a judgment module 40, which is used to determine whether the heat pump heating rate curve includes the current ambient temperature. The establishment module 10 is also used to update the current ambient temperature and the corresponding current heating rate into the heat pump heating rate curve when the heat pump heating rate curve does not include the current ambient temperature.

[0102] Specifically, in this embodiment, after obtaining the current ambient temperature, the judgment module 40 determines whether the current ambient temperature falls within the temperature range of the heat pump heating rate curve. When the judgment module 40 determines that the heat pump heating rate curve does not include the current ambient temperature, the establishment module 10 updates the current ambient temperature and the corresponding current heating rate into the heat pump heating rate curve, thereby improving the heat pump rate curve and expanding the curve range.

[0103] Furthermore, in an optional embodiment, the control device further includes a calculation module 50, which calculates the magnitude of the adjusted current heat pump frequency and sends an adjustment command to the heat pump adjustment module 60.

[0104] Specifically, in this embodiment, the calculation module 50 calculates the ratio of the heat pump heating rate to the current heating rate, and calculates the value of the current heat pump frequency multiplied by the ratio, thereby determining the required adjustment value of the current heat pump frequency. After determining the ratio of the heat pump heating rate to the current heating rate, the calculation module 50 sends an adjustment command to the heat pump adjustment module 60. The heat pump adjustment module 60 adjusts the current heat pump frequency to the value obtained by multiplying the current heat pump frequency by the ratio, thereby proportionally adjusting the heat pump's operating frequency to be closer to the frequency required to meet the current actual heating needs. This avoids energy waste caused by overheating and achieves more accurate and efficient control of the heat pump.

[0105] Please refer to Figure 5 This application also provides a solar inverter water heater, including a solar heat collection device, a water tank, a heat pump, and the control device described in the above embodiments. The heat pump and the solar heat collection device are both connected to the water tank, and the control device is connected to the heat pump.

[0106] Through the above settings, the solar inverter water heater can adaptively adjust the heat pump frequency according to the current sunlight intensity, avoiding the energy waste caused by a high heat pump frequency when the sunlight is too strong or the insufficient hot water supply caused by a low heat pump frequency when the sunlight is weak, thus improving energy utilization efficiency and ensuring a stable hot water supply.

[0107] Furthermore, in an optional embodiment, the solar inverter water heater further includes a processor 300 and a memory 200. The processor 300 is used to run code to execute the heating method of the solar inverter water heater described in any of the above embodiments, and the memory 200 is used to store code for the processor 300 to execute the heating method of the solar inverter water heater.

[0108] The heating method of the solar inverter water heater has been described in the above embodiments and will not be repeated here.

[0109] Specifically, the memory 200 can be a computer memory or an external storage device such as a hard disk or flash memory. The appropriate type of memory 200 can be selected according to actual needs.

[0110] In this embodiment, the memory 200 and the processor 300 are connected via a bus 100 to enable data transmission. The processor 300 executes code by reading the data stored in the memory 200 to implement the heating method of the solar inverter water heater.

[0111] This application also provides a storage medium storing heating execution instructions, which, when executed by a solar inverter water heater, are used to implement the heating method of the solar inverter water heater as described in any of the above embodiments.

[0112] Specifically, the storage medium provided in this embodiment can be connected to the solar inverter water heater via a data interface. This embodiment does not impose any restrictions on the specific connection method.

[0113] The data interface can be a physical interface or a wireless connection. For example, the control device can connect to the storage medium via interfaces such as USB, HDMI, and SATA, or via wireless communication protocols such as Bluetooth and WiFi.

[0114] When the storage medium is connected to the solar inverter water heater, the solar heat pump water heater can read and execute the corresponding execution instructions from the storage medium to realize the heating method of the solar inverter water heater.

[0115] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application 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 or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heating method for a solar inverter water heater, characterized in that, include: Establish heat pump heating rate curves corresponding to different ambient temperatures in the absence of light; Obtain the current ambient temperature, current heating rate, and current heat pump frequency; Compare the current heating rate with the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve; If the current heating rate is less than the heat pump heating rate, then the current heating rate is updated to the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve, and the above steps are repeated. If the current heating rate is greater than or equal to the heat pump heating rate, then the current heat pump frequency is adjusted.

2. The heating method of a solar inverter water heater according to claim 1, characterized in that, The method further includes: Determine whether the heat pump heating rate curve includes the current ambient temperature; If not, the current ambient temperature and the current heating rate are recorded in the heat pump heating rate curve; If so, compare the current heating rate with the heat pump heating rate corresponding to the current ambient temperature within the heat pump heating rate curve.

3. The heating method of a solar inverter water heater according to claim 1, characterized in that, The step of adjusting the current heat pump frequency if the current heating rate is greater than or equal to the heat pump heating rate includes: Calculate the ratio of the heat pump heating rate to the current heating rate; Adjust the current heat pump frequency to the value obtained by multiplying the current heat pump frequency by the ratio.

4. A heating method for a solar inverter water heater according to any one of claims 1-3, characterized in that, The method further includes: After a set time interval, the current heating rate and the current heat pump frequency are reacquired. Calculate the ratio of the heat pump heating rate to the current heating rate; Adjust the current heat pump frequency to the value obtained by multiplying the current heat pump frequency by the ratio.

5. A control device, characterized in that, include: A module is created to establish the heat pump heating rate curves corresponding to different ambient temperatures in the absence of light. The acquisition module is used to acquire the current ambient temperature, the current heating rate, the current heat pump frequency, and the heat pump heating rate corresponding to the current ambient temperature in the heat pump heating rate curve. The comparison module is used to compare the current heating rate with the heat pump heating rate; The heat pump adjustment module adjusts the heat pump frequency based on the comparison result of the comparison module.

6. The control device according to claim 5, characterized in that, It also includes a judgment module, which is used to determine whether the heat pump heating rate curve includes the current ambient temperature. The establishment module is also used to update the current ambient temperature and the corresponding current heating rate into the heat pump heating rate curve when the heat pump heating rate curve does not include the current ambient temperature.

7. The control device according to claim 5, characterized in that, It also includes a calculation module, which is used to calculate the adjusted current heat pump frequency and send an adjustment command to the heat pump adjustment module.

8. A solar-powered variable frequency water heater, characterized in that, The device includes a solar thermal collection device, a water tank, a heat pump, and a control device as described in any one of claims 6-7, wherein the heat pump and the solar thermal collection device are both connected to the water tank, and the control device is connected to the heat pump.

9. The solar variable frequency water heater according to claim 8, characterized in that, It also includes a processor and a memory, the processor being used to run code to perform the heating method of the solar inverter water heater according to any one of claims 1-4, and the memory being used to store the code for the processor to execute the method.

10. A storage medium, characterized in that, The storage medium stores heating execution instructions, which, when executed by the solar inverter water heater, are used to implement the heating method of the solar inverter water heater as described in any one of claims 1-4.

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