A control method of a dual-energy water heater

Abstract

This invention provides a control method for a dual-energy water heater, comprising: determining the usage status of the dual-energy water heater based on its water outlet rate and water outlet interval, and determining a first heating mode for the dual-energy water heater in conjunction with the water temperature; determining whether the first heating mode needs to be adjusted based on continuous monitoring of the dual-energy water heater; if the first heating mode needs to be adjusted, determining a second heating mode based on the heating target of the dual-energy water heater; determining a switching time based on the operating parameters of the dual-energy water heater, and switching the first heating mode to the second heating mode based on the switching time; ensuring user needs are met while saving energy, determining the optimal switching time, and ensuring that the use of the dual-energy water heater is not damaged as much as possible during the switching process.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and in particular to a control method for a dual-energy water heater. Background Technology

[0002] Water heaters are common household appliances. Based on the energy source used, they can be categorized into single-energy water heaters such as gas water heaters, electric water heaters, air source heat pump water heaters, and solar water heaters. With economic development and improved living standards, dual-energy water heaters that support the use of two energy sources are becoming increasingly widespread.

[0003] In recent years, the use of dual-energy water heaters has become increasingly common. Hot water supply systems that combine gas heating with heat pump water heaters are no longer uncommon. Existing dual-energy water heaters usually focus on improving user experience by heating water quickly and supplying it for a long time, while giving less consideration to saving energy costs. There are currently no good energy-saving methods, and the lifespan of dual-energy water heaters is not taken into account when switching heating modes. Ultimately, the benefits of using dual-energy water heaters are not maximized. Summary of the Invention

[0004] This invention provides a control method for a dual-energy water heater that ensures user needs are met while saving energy, determines the optimal switching time, and ensures that the use of the dual-energy water heater is not impaired as much as possible during the switching process.

[0005] A control method for a dual-energy water heater includes:

[0006] S1: Determine the usage status of the dual-energy water heater based on its water output rate and water output interval, and determine the first heating method for the dual-energy water heater based on the water temperature.

[0007] S2: Based on continuous monitoring of the dual-energy water heater, determine whether the primary heating mode needs to be adjusted;

[0008] S3: If the first heating method needs to be adjusted, the second heating method shall be determined according to the heating target of the dual-energy water heater;

[0009] S4: Determine the switching time based on the operating parameters of the dual-energy water heater, and switch the first heating mode to the second heating mode based on the switching time.

[0010] Preferably, in S1, the usage status of the dual-energy water heater is determined based on the water outlet rate and water outlet interval of the dual-energy water heater, including:

[0011] If the water output rate is greater than the first preset rate, or the water output rate is less than the first preset rate but greater than the second preset rate, and the water output interval is greater than the preset interval, the usage state is determined to be a fast usage state.

[0012] If the water output rate is less than the first preset rate and greater than the second preset rate, and the water output interval is less than the preset interval, or if the usage state is determined to be a slow usage state and the water output interval is greater than the preset interval, then the usage state is determined to be a slow usage state.

[0013] If the water output rate is less than the second preset rate and the water output interval is less than the preset interval, the usage state is determined to be an unused state.

[0014] Preferably, in S1, determining the first heating method for the dual-energy water heater based on the water temperature includes:

[0015] If the water temperature of the water heater is higher than the preset temperature, and the usage state is an unused state or a slow usage state, then the heating method with the lower price is determined as the first heating method based on the current price of heat pump heating and gas heating.

[0016] Otherwise, the first heating method is determined to be a combination of heat pump heating and gas heating.

[0017] Preferably, in S2, based on continuous monitoring of the dual-energy water heater, it is determined whether the first heating method needs to be adjusted, including:

[0018] The system obtains the first water output rate and the first water output interval within a preset time before the first heating method is determined, the second water output rate and the second water output interval within a preset time after the first heating method is determined, and the water temperature trend within a preset time before and after the first heating method is determined.

[0019] Determine whether the rate difference between the first water outlet rate and the second water outlet rate, or the interval difference between the first water outlet interval and the second water outlet interval, is greater than a preset difference;

[0020] If so, and the water temperature trend is downward, it is determined that the first heating method needs to be adjusted;

[0021] Otherwise, determine the user's water usage time rules and decide whether the first heating method needs to be adjusted based on the water usage time rules.

[0022] Preferably, the user's water usage time rules are determined, and based on these rules, it is determined whether the first heating method needs to be adjusted, including:

[0023] The system obtains the third water output rate and third water output interval of the user at preset time points within a preset number of days, performs intelligent analysis on the third water output rate and third water output interval, generates water usage time rules, marks the water usage at time points in a daily timetable based on the water usage time rules, obtains a water usage timetable, and determines whether there is a significant change in water usage at the current time point based on the water usage timetable.

[0024] If so, and the water temperature trend is downward, it is determined that the first heating method needs to be adjusted;

[0025] Otherwise, if the water temperature trend is upward and the water temperature rises to the preset temperature, it is determined that the first heating method needs to be adjusted; or if the water temperature trend is upward and the water temperature has not risen to the preset temperature, it is determined that the first heating method does not need to be adjusted.

[0026] Preferably, intelligent analysis is performed on the third water outlet rate and the third water outlet interval to generate water usage time rules, including:

[0027] Compare the third water output rates at the same time on different dates. If the difference in the third rate is within the preset rate range, take the average of the third water output rates at that time as the regular water output rate at that time.

[0028] If the difference in the third rate is not within the preset rate range, the number of dates that are not within the preset rate range is extracted. If the number of dates is less than the preset number, the corresponding dates are removed, and the average of the remaining third water discharge rates at that time point is taken as the regular water discharge rate at that time point. If the number of dates is greater than the preset number, a rate trend curve is generated for the third water discharge rates at that time point on different dates, and based on the trend prediction model, the rate trend curve is predicted to predict the regular water discharge rate on the current date.

[0029] Based on the regular water output rate at all time points, the regular water output interval is determined, and based on the regular water output rate and the regular water output interval, a water usage time rule is generated.

[0030] Preferably, in step S3, if it is necessary to adjust the first heating method, the second heating method is determined according to the heating target of the dual-energy water heater, including:

[0031] Based on the temperature difference between the current temperature of the dual-energy water heater and the target temperature of the heating target, the heat source of the second heating method is determined;

[0032] When the heating source is a single energy source, the heating power of the single energy source is determined based on the target time and temperature difference of the heating target.

[0033] When the heating source is dual energy source, the optimal heating power of each energy source is determined based on the target time and temperature difference of the heating target.

[0034] Preferably, in step S4, the switching time is determined based on the operating parameters of the dual-energy water heater, including:

[0035] By obtaining the temperature operation parameters of the dual-energy water heater and combining them with the set safe operating temperature of the dual-energy water heater, the temperature rating trend of the dual-energy water heater in the future time period can be predicted.

[0036] The ambient humidity and temperature of the dual-energy water heater are obtained, and combined with the continuous heating time, the leakage probability trend of the dual-energy water heater in the future time period is predicted.

[0037] Based on the historical operating parameter information of heating mode switching, determine the impact parameters of power mutation on temperature and leakage current respectively;

[0038] Based on the aforementioned influencing parameters, and combined with the power difference between the first heating method and the second heating method, a target time point is selected as the switching time from the temperature scoring trend and the leakage probability trend.

[0039] Preferably, predicting the temperature rating trend of dual-energy water heaters over a future period includes:

[0040] The safe operating temperature of the dual-energy water heater is set. Combining the first temperature correlation between the heat pump and the power plug, and the second temperature correlation between the gas fan and the power plug, a temperature correlation scoring model for the dual-energy water heater is set.

[0041] The heat pump operating temperature, gas fan temperature, and power plug temperature of the dual-energy water heater are input into the temperature correlation scoring model to determine the current temperature score of the dual-energy water heater.

[0042] The continuous heating time of the dual-energy water heater is obtained, and the temperature rating trend of the dual-energy water heater is predicted based on the continuous heating time and the current temperature rating.

[0043] Preferably, the target time point is selected as the switching time from the temperature scoring trend and the leakage probability trend, including:

[0044] Obtain the power difference between the first heating method and the second heating method, and combine the influence parameters of the power change on temperature and leakage current to determine the influence values ​​of the power difference caused by the change in the power difference on temperature and humidity.

[0045] Based on the numerical impact of the power difference on temperature and humidity, abrupt changes are predicted on the temperature scoring trend and leakage probability trend to determine the abrupt change trend of temperature scoring and leakage probability.

[0046] A first time period that meets the preset safe temperature score is selected from the temperature score mutation trend, a second time period that meets the preset safe leakage probability is selected from the leakage probability mutation trend, a set of the same time points is selected from the first time period and the second time period, and the target time point with the earliest time point in the set of the same time points is selected as the switching time.

[0047] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0048] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0049] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0050] Figure 1 This is a flowchart of a control method for a dual-energy water heater according to an embodiment of the present invention;

[0051] Figure 2 This is a flowchart illustrating the process of determining the usage status of a dual-energy water heater in an embodiment of the present invention;

[0052] Figure 3 This is a flowchart for determining the switching time in an embodiment of the present invention. Detailed Implementation

[0053] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0054] Example 1

[0055] This invention provides a control method for a dual-energy water heater, such as... Figure 1 As shown, it includes:

[0056] S1: Determine the usage status of the dual-energy water heater based on its water output rate and water output interval, and determine the first heating method for the dual-energy water heater based on the water temperature.

[0057] S2: Based on continuous monitoring of the dual-energy water heater, determine whether the primary heating mode needs to be adjusted;

[0058] S3: If the first heating method needs to be adjusted, the second heating method shall be determined according to the heating target of the dual-energy water heater;

[0059] S4: Determine the switching time based on the operating parameters of the dual-energy water heater, and switch the first heating mode to the second heating mode based on the switching time.

[0060] In this embodiment, the first heating method and the second heating method include heat pump heating, gas heating, and simultaneous heating by heat pump and gas.

[0061] In this embodiment, the usage states of the dual-energy water heater include an unused state, a slow-use state, and a fast-use state.

[0062] In this embodiment, when the usage status of the dual-energy water heater changes, it may be necessary to switch the heating method.

[0063] In this embodiment, the operating parameters include temperature parameters, power parameters, etc.

[0064] The beneficial effects of the above design scheme are: by determining the first heating method that meets the user's hot water requirements under the usage state of the dual-energy water heater, and by continuously monitoring the dual-energy water heater to switch the heating method, the user's needs are guaranteed while saving energy. Furthermore, the optimal switching time is determined based on the operating parameters of the dual-energy water heater to ensure that the use of the dual-energy water heater is not damaged as much as possible during the switching process.

[0065] Example 2

[0066] Based on Embodiment 1, this embodiment of the invention provides a control method for a dual-energy water heater, such as... Figure 2 As shown, in S1, the usage status of the dual-energy water heater is determined based on its water output rate and water output interval, including:

[0067] S11: If the water output rate is greater than the first preset rate, or the water output rate is less than the first preset rate but greater than the second preset rate, and the water output interval is greater than the preset interval, the usage state is determined to be a fast usage state.

[0068] S12: If the water output rate is less than the first preset rate and greater than the second preset rate, and the water output interval is less than the preset interval, or if the usage state is determined to be a slow usage state and the water output interval is greater than the preset interval, then the usage state is determined to be a slow usage state.

[0069] S13: If the water output rate is less than the second preset rate and the water output interval is less than the preset interval, the usage state is determined to be an unused state.

[0070] The beneficial effects of the above design scheme are: by combining the water output rate of the dual-energy water heater with the water output interval, the determined usage state of the dual-energy water heater is more accurate, avoiding the situation where the water output rate is considered alone while ignoring the water output interval (for example, if the water output rate is determined to be a slow usage state, the determined first heating method may heat the water to the preset temperature too slowly, resulting in the inability to heat the water to the preset temperature in time when the user suddenly needs hot water), thus causing the obtained first heating method to fail to meet the user's needs.

[0071] Example 3

[0072] Based on Embodiment 2, this embodiment of the invention provides a control method for a dual-energy water heater. In S1, a first heating mode for the dual-energy water heater is determined based on the water temperature, including:

[0073] If the water temperature of the water heater is higher than the preset temperature, and the usage state is an unused state or a slow usage state, then the heating method with the lower price is determined as the first heating method based on the current price of heat pump heating and gas heating.

[0074] Otherwise, the first heating method is determined to be a combination of heat pump heating and gas heating.

[0075] In this embodiment, the current prices for heat pump heating and gas heating are determined based on market gas and electricity rates.

[0076] The beneficial effects of the above design scheme are: by rationally determining the first heating method based on the water temperature and usage status of the water heater, the first heating method can meet the user's needs while achieving optimal energy efficiency, thus saving the user water heater resource costs.

[0077] Example 4

[0078] Based on Embodiment 1, this embodiment of the invention provides a control method for a dual-energy water heater, characterized in that, in step S2, determining whether to adjust the first heating mode based on continuous monitoring of the dual-energy water heater includes:

[0079] The system obtains the first water output rate and the first water output interval within a preset time before the first heating method is determined, the second water output rate and the second water output interval within a preset time after the first heating method is determined, and the water temperature trend within a preset time before and after the first heating method is determined.

[0080] Determine whether the rate difference between the first water outlet rate and the second water outlet rate, or the interval difference between the first water outlet interval and the second water outlet interval, is greater than a preset difference;

[0081] If so, and the water temperature trend is downward, it is determined that the first heating method needs to be adjusted;

[0082] Otherwise, determine the user's water usage time rules and decide whether the first heating method needs to be adjusted based on the water usage time rules.

[0083] In this embodiment, determining the user's water usage time rules and judging whether the first heating method needs to be adjusted based on the water usage time rules includes:

[0084] The system obtains the third water output rate and third water output interval of the user at preset time points within a preset number of days, performs intelligent analysis on the third water output rate and third water output interval, generates water usage time rules, marks the water usage at time points in a daily timetable based on the water usage time rules, obtains a water usage timetable, and determines whether there is a significant change in water usage at the current time point based on the water usage timetable.

[0085] If so, and the water temperature trend is downward, it is determined that the first heating method needs to be adjusted;

[0086] Otherwise, if the water temperature trend is upward and the water temperature rises to the preset temperature, it is determined that the first heating method needs to be adjusted; or if the water temperature trend is upward and the water temperature has not risen to the preset temperature, it is determined that the first heating method does not need to be adjusted.

[0087] The beneficial effects of the above design scheme are: by comparing the differences in water output rate and water output interval before and after the first heating method, and combining the temperature change trend, it is determined whether the first heating method needs to be adjusted, ensuring that the determined heating method can bring users a better water experience, and timely adjustment of the heating method can still achieve the effect of saving energy.

[0088] Example 5

[0089] Based on Embodiment 4, this embodiment of the invention provides a control method for a dual-energy water heater, which determines the user's water usage time rules and determines whether the first heating mode needs to be adjusted based on the water usage time rules, including:

[0090] The system obtains the third water output rate and third water output interval of the user at preset time points within a preset number of days, performs intelligent analysis on the third water output rate and third water output interval, generates water usage time rules, marks the water usage at time points in a daily timetable based on the water usage time rules, obtains a water usage timetable, and determines whether there is a significant change in water usage at the current time point based on the water usage timetable.

[0091] If so, and the water temperature trend is downward, it is determined that the first heating method needs to be adjusted;

[0092] Otherwise, if the water temperature trend is upward and the water temperature rises to the preset temperature, it is determined that the first heating method needs to be adjusted; or if the water temperature trend is upward and the water temperature has not risen to the preset temperature, it is determined that the first heating method does not need to be adjusted.

[0093] The beneficial effects of the above design scheme are: without adjusting the heating method during the analysis before and after determining the first heating method, further analysis is conducted based on the user's daily water usage habits to determine whether it is necessary to adjust the heating method in advance to adapt to the user's water usage needs, thus ensuring user experience and saving energy.

[0094] Example 6

[0095] Based on Embodiment 5, this embodiment of the invention provides a control method for a dual-energy water heater, which intelligently analyzes the third water outlet rate and the third water outlet interval to generate water usage time rules, including:

[0096] Compare the third water output rates at the same time on different dates. If the difference in the third rate is within the preset rate range, take the average of the third water output rates at that time as the regular water output rate at that time.

[0097] If the difference in the third rate is not within the preset rate range, the number of dates that are not within the preset rate range is extracted. If the number of dates is less than the preset number, the corresponding dates are removed, and the average of the remaining third water discharge rates at that time point is taken as the regular water discharge rate at that time point. If the number of dates is greater than the preset number, a rate trend curve is generated for the third water discharge rates at that time point on different dates, and based on the trend prediction model, the rate trend curve is predicted to predict the regular water discharge rate on the current date.

[0098] Based on the regular water output rate at all time points, the regular water output interval is determined, and based on the regular water output rate and the regular water output interval, a water usage time rule is generated.

[0099] The beneficial effects of the above design scheme are: by analyzing and comparing the third water output rate at the same time on different dates, and if necessary, predicting the rate trend curve based on the trend prediction model, the user's water usage rules can be better determined, providing a basis for adjusting the heating method.

[0100] Example 7

[0101] Based on Embodiment 1, this embodiment of the invention provides a control method for a dual-energy water heater. In S3, if it is necessary to adjust the first heating mode, a second heating mode is determined according to the heating target of the dual-energy water heater, including:

[0102] Based on the temperature difference between the current temperature of the dual-energy water heater and the target temperature of the heating target, the heat source of the second heating method is determined;

[0103] When the heating source is a single energy source, the heating power of the single energy source is determined based on the target time and temperature difference of the heating target.

[0104] When the heating source is dual energy source, the optimal heating power of each energy source is determined based on the target time and temperature difference of the heating target.

[0105] In this embodiment, the single energy source is either gas or a heat pump, while the dual energy source is both gas and a heat pump.

[0106] In this embodiment, the heat transfer power of the gas or heat pump is adjustable.

[0107] In this embodiment, the optimal heating power of each of the two energy sources is determined based on the target time and temperature difference of the heating target, including:

[0108] Based on the temperature difference, a candidate heating power combination that meets the target time is selected from the dual-energy heating power combinations, specifically as follows:

[0109] The actual time it takes for a dual-energy water heater to reach the target temperature under the alternative heating power combinations is calculated using the following formula.

[0110]

[0111] Among them, T R δ1 represents the actual time it takes for the dual-energy water heater to reach the target temperature, δ2 represents the interference coefficient of heat pump heating (0, 0.3), and δ3 represents the interference coefficient of gas heating (0, 0.3). W Z This represents the total work done to reach the target temperature. P1 represents the heating power of the heat pump in the alternative heating power combinations, and P2 represents the heating power of the gas in the alternative heating power combinations. This indicates the time required for the heat pump to heat water by 1 degree Celsius. This represents the time required for the water temperature to rise by 1 degree Celsius when heated solely by gas, and Δθ represents the temperature difference value.

[0112] The heating power combination where the actual time is less than the target time is selected as the alternative heating power combination;

[0113] The heating cost m for the alternative heating power combinations is calculated using the following formula. R ;

[0114]

[0115] Where m1 represents the unit price cost of using 1 kilowatt-hour of electricity, m2 represents the unit price cost of using 1 cubic meter of gas, and V0 represents the number of cubic meters of gas consumed per hour.

[0116] The alternative heating power combination with the lowest heating cost is selected as the target heating power combination. Based on the heat source and the target heating power combination, a second heating method is obtained.

[0117] The beneficial effects of the above design scheme are: based on the target heating time and heating temperature, and after determining the heating source, the heating power of the heating source can be reasonably selected. When selecting the final heating power, the electricity price and gas price are taken into account, so as to select the optimal heating power for users and save heating costs.

[0118] Example 8

[0119] Based on Embodiment 1, this embodiment of the invention provides a control method for a dual-energy water heater, such as... Figure 3 As shown in S4, the switching time is determined based on the operating parameters of the dual-energy water heater, including:

[0120] S41: Obtain the temperature operation parameters of the dual-energy water heater, combine them with the set safe operating temperature of the dual-energy water heater, and predict the temperature rating trend of the dual-energy water heater in the future time period.

[0121] S42: Obtain the ambient humidity and ambient temperature of the dual-energy water heater, and combine them with the continuous heating time to predict the leakage probability trend of the dual-energy water heater in the future time period;

[0122] S43: Based on the historical operating parameter information of heating mode switching, determine the impact parameters of power sudden change on temperature and leakage current respectively;

[0123] S44: Based on the aforementioned influencing parameters and the power difference between the first heating method and the second heating method, a target time point is selected as the switching time from the temperature scoring trend and the leakage probability trend.

[0124] In this embodiment, predicting the temperature rating trend of a dual-energy water heater over a future time period includes:

[0125] The safe operating temperature of the dual-energy water heater is set. Combining the first temperature correlation between the heat pump and the power plug, and the second temperature correlation between the gas fan and the power plug, a temperature correlation scoring model for the dual-energy water heater is set.

[0126] The heat pump operating temperature, gas fan temperature, and power plug temperature of the dual-energy water heater are input into the temperature correlation scoring model to determine the current temperature score of the dual-energy water heater.

[0127] The continuous heating time of the dual-energy water heater is obtained, and the temperature rating trend of the dual-energy water heater is predicted based on the continuous heating time and the current temperature rating.

[0128] The beneficial effects of the above design scheme are: based on the operating parameters of the dual-energy water heater and the analysis of historical heating mode switching information, the safety of the dual-energy water heater is predicted from both temperature and leakage aspects, and the optimal time point is determined as the switching time. Under the premise of ensuring the safety of water heater use, the heating mode is switched as reasonably as possible, thereby achieving a good user experience with relatively few resources.

[0129] Example 9

[0130] Based on Example 8, this embodiment of the invention provides a control method for a dual-energy water heater, predicting the temperature rating trend of the dual-energy water heater over a future time period, including:

[0131] The safe operating temperature of the dual-energy water heater is set. Combining the first temperature correlation between the heat pump and the power plug, and the second temperature correlation between the gas fan and the power plug, a temperature correlation scoring model for the dual-energy water heater is set.

[0132] The heat pump operating temperature, gas fan temperature, and power plug temperature of the dual-energy water heater are input into the temperature correlation scoring model to determine the current temperature score of the dual-energy water heater.

[0133] The continuous heating time of the dual-energy water heater is obtained, and the temperature rating trend of the dual-energy water heater is predicted based on the continuous heating time and the current temperature rating.

[0134] In this embodiment, the correlation scoring model is used to determine the overall temperature evaluation of the dual-energy water heater.

[0135] In this embodiment, the temperature rating trend is the temperature rating of the dual-energy water heater over a future time period.

[0136] The beneficial effects of the above design scheme are: by combining the heat pump operating temperature, gas fan temperature, and power plug temperature of the dual-energy water heater with a temperature correlation scoring model, the overall temperature of the dual-energy water heater is evaluated, providing an accurate temperature-related basis for determining the switching time.

[0137] Example 10

[0138] Based on Example 9, this embodiment of the invention provides a control method for a dual-energy water heater, which selects a target time point as the switching time from the temperature scoring trend and the leakage probability trend, including:

[0139] Obtain the power difference between the first heating method and the second heating method, and combine the influence parameters of the power change on temperature and leakage current to determine the influence values ​​of the power difference caused by the change in the power difference on temperature and humidity.

[0140] Based on the numerical impact of the power difference on temperature and humidity, abrupt changes are predicted on the temperature scoring trend and leakage probability trend to determine the abrupt change trend of temperature scoring and leakage probability.

[0141] A first time period that meets the preset safe temperature score is selected from the temperature score mutation trend, a second time period that meets the preset safe leakage probability is selected from the leakage probability mutation trend, a set of the same time points is selected from the first time period and the second time period, and the target time point with the earliest time point in the set of the same time points is selected as the switching time.

[0142] The beneficial effects of the above design scheme are: by selecting a set of the same time points that can be safely selected based on the influence of the power difference between the first heating mode and the second heating mode on temperature and leakage current, the safety of switching heating modes is guaranteed. At the same time, the target time point with the earliest time point is selected from the set of the same time points as the switching time, so as to achieve a good user experience with relatively few resources.

[0143] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A control method for a dual-energy water heater, characterized in that, include: S1: Determine the usage status of the dual-energy water heater based on its water output rate and water output interval, and determine the first heating method for the dual-energy water heater based on the water temperature. S2: Based on continuous monitoring of the dual-energy water heater, determine whether the primary heating method needs to be adjusted, including: The system obtains the first water output rate and the first water output interval within a preset time before the first heating method is determined, the second water output rate and the second water output interval within a preset time after the first heating method is determined, and the water temperature trend within a preset time before and after the first heating method is determined. Determine whether the rate difference between the first water outlet rate and the second water outlet rate, or the interval difference between the first water outlet interval and the second water outlet interval, is greater than the corresponding preset difference. If so, and the water temperature trend is downward, it is determined that the first heating method needs to be adjusted; Otherwise, determine the user's water usage time rules, and based on these rules, determine whether the primary heating method needs to be adjusted, including: The system obtains the third water output rate and third water output interval of the user at preset time points within a preset number of days, performs intelligent analysis on the third water output rate and third water output interval, generates water usage time rules, marks the water usage at time points in a daily timetable based on the water usage time rules, obtains a water usage timetable, and determines whether there is a significant change in water usage at the current time point based on the water usage timetable. If so, and the water temperature trend is downward, it is determined that the first heating method needs to be adjusted; Otherwise, if the water temperature trend is upward and the water temperature rises to the preset temperature, it is determined that the first heating method needs to be adjusted; or if the water temperature trend is upward and the water temperature does not rise to the preset temperature, it is determined that the first heating method does not need to be adjusted. The third water outlet rate and the third water outlet interval are intelligently analyzed to generate water usage time rules, including: Compare the third water output rates at the same time on different dates. If the difference in the third rate is within the preset rate range, take the average of the third water output rates at that time as the regular water output rate at that time. If the difference in the third rate is not within the preset rate range, the number of dates that are not within the preset rate range is extracted. If the number of dates is less than the preset number, the corresponding dates are removed, and the average of the remaining third water discharge rates at that time point is taken as the regular water discharge rate at that time point. If the number of dates is greater than the preset number, a rate trend curve is generated for the third water discharge rates at that time point on different dates, and based on the trend prediction model, the rate trend curve is predicted to predict the regular water discharge rate on the current date. Based on the regular water outflow rate at all time points, determine the regular water outflow interval, and generate water usage time rules based on the regular water outflow rate and the regular water outflow interval; S3: If the first heating method needs to be adjusted, the second heating method shall be determined according to the heating target of the dual-energy water heater; S4: Determine the switching time based on the operating parameters of the dual-energy water heater, including: By obtaining the temperature operation parameters of the dual-energy water heater and combining them with the set safe operating temperature of the dual-energy water heater, the temperature rating trend of the dual-energy water heater in the future time period can be predicted. The ambient humidity and temperature of the dual-energy water heater are obtained, and combined with the continuous heating time of the dual-energy water heater, the leakage probability trend of the dual-energy water heater in the future time period is predicted. Based on the historical operating parameter information of heating mode switching, determine the impact parameters of power mutation on temperature and leakage current respectively; Based on the aforementioned influencing parameters, and combined with the power difference between the first heating method and the second heating method, a target time point is selected as the switching time from the temperature scoring trend and the leakage probability trend. Based on the switching time, the first heating mode is switched to the second heating mode.

2. The control method for a dual-energy water heater according to claim 1, characterized in that, In S3, if the first heating method needs to be adjusted, the second heating method is determined based on the heating target of the dual-energy water heater, including: Based on the temperature difference between the current temperature of the dual-energy water heater and the target temperature of the heating target, the heat source of the second heating method is determined; When the heating source is a single energy source, the heating power of the single energy source is determined based on the target time and temperature difference of the heating target. When the heating source is dual energy source, the optimal heating power of each energy source is determined based on the target time and temperature difference of the heating target.

3. The control method for a dual-energy water heater according to claim 1, characterized in that, Predicting temperature rating trends for dual-energy water heaters over future periods, including: Obtain the safe operating temperature corresponding to the dual-energy water heater, and combine the first temperature correlation between the heat pump and the power plug, and the second temperature correlation between the gas fan and the power plug, to set a temperature correlation scoring model for the dual-energy water heater; The heat pump operating temperature, gas fan temperature, and power plug temperature of the dual-energy water heater are input into the temperature correlation scoring model to determine the current temperature score of the dual-energy water heater. The continuous heating time of the dual-energy water heater is obtained, and the temperature rating trend of the dual-energy water heater is predicted based on the continuous heating time and the current temperature rating.

4. The control method for a dual-energy water heater according to claim 3, characterized in that, The target time point is selected as the switching time from the temperature rating trend and the leakage current probability trend, including: Obtain the power difference between the first heating method and the second heating method, and combine the influence parameters of the power change on temperature and leakage current to determine the influence values ​​of the power difference caused by the change in the power difference on temperature and humidity. Based on the numerical impact of the power difference on temperature and humidity, abrupt changes are predicted on the temperature scoring trend and leakage probability trend to determine the abrupt change trend of temperature scoring and leakage probability. A first time period that meets the preset safe temperature score is selected from the temperature score mutation trend, a second time period that meets the preset safe leakage probability is selected from the leakage probability mutation trend, a set of the same time points is selected from the first time period and the second time period, and the target time point with the earliest time point in the set of the same time points is selected as the switching time.

Images