System and method of air source heat pump water heater

Abstract

The invention relates to the field of heating and refrigerating combined systems, in particular to a system and method for an air source heat pump water heater, and when an energy consumption monitoring module detects that the energy consumption of the air source heat pump water heater exceeds a preset value, a dust detection module and a scaling detection module are started to detect the states of an evaporator and a condenser; the dust detection module detects the shielding degree of dust attached to the evaporator; the scaling detection module measures the pressure change before and after the fluid passes through the condenser to obtain the scaling degree; the alarm module sends the scaling degree and the coverage degree to the central processing unit for analysis and comparison so as to judge whether the scaling degree and the coverage degree exceed a preset threshold value or not, and an alarm signal is sent out when the dust or scaling degree exceeds the preset threshold value. When the dust or scaling degree exceeds a set threshold value, the automatic cleaning instruction generation module automatically generates a cleaning instruction and prompts a user to execute corresponding maintenance operation. And dust and scaling conditions in the operation process can be found in time, so that intervention treatment is performed in time, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of heating and cooling combined systems, and in particular to a system and method for an air source heat pump water heater. Background Art

[0002] Air source heat pump water heater is an energy-efficient water heater that works by driving a compressor with electricity, absorbing heat from the surrounding air and transferring this heat to water to heat the water. Compared with traditional electric water heaters or gas water heaters, air source heat pump water heaters can provide the same amount or even more hot water while consuming less energy, and its energy efficiency ratio (COP) can usually reach more than 3.0, which means that more than 3 kWh of heat can be obtained for every 1 kWh of electricity consumed. This water heater is not only environmentally friendly and reduces greenhouse gas emissions, but also has lower operating costs and is suitable for home and commercial use.

[0003] After long-term use, the performance and efficiency of existing air source heat pump water heaters are often affected by some factors, especially the dust accumulated on the evaporator and the scale formed inside the condenser. Over time, the dust particles suspended in the air will gradually settle on the surface of the evaporator, forming a layer of cover that hinders heat exchange. This layer of dust reduces the contact area between the evaporator and the surrounding air, reducing the efficiency of absorbing heat from the air, which in turn requires the device to consume more electricity to achieve the same heating effect. Summary of the invention

[0004] The object of the present invention is to provide a system and method for an air source heat pump water heater, which aims to timely detect dust and scaling during operation so as to intervene and deal with them in time and improve energy utilization efficiency.

[0005] To achieve the above-mentioned object, in a first aspect, the present invention provides a system for an air source heat pump water heater, comprising an energy consumption monitoring module, a dust detection module, a scaling detection module, an alarm module, and an automatic cleaning instruction generation module;

[0006] The energy consumption monitoring module is used to start the dust detection module and the scaling detection module to detect the status of the evaporator and the condenser when it detects that the energy consumption of the air source heat pump water heater exceeds a preset value;

[0007] The dust detection module is used to detect the degree of obstruction of dust attached to the evaporator;

[0008] The scaling detection module is used to measure the pressure change of the fluid before and after passing through the condenser to obtain the scaling degree;

[0009] The alarm module is used to send the scaling degree and coverage degree to the central processing unit for analysis and comparison to determine whether they exceed a preset threshold value, and to issue an alarm signal when the dust or scaling degree exceeds the set threshold value;

[0010] The automatic cleaning instruction generation module is used to automatically generate a cleaning instruction and prompt the user to perform corresponding maintenance operations when the degree of dust or scaling exceeds a set threshold.

[0011] Among them, the system of the air source heat pump water heater also includes a maintenance time prediction module, which is used to predict future high energy consumption periods based on historical records of energy consumption data, dust levels and scaling levels, and notify users in advance to perform preventive maintenance.

[0012] Wherein, the energy consumption monitoring module includes a data acquisition unit, a threshold setting unit and a driving unit;

[0013] The data acquisition unit is used to continuously acquire energy consumption data of the air source heat pump water heater through an electric energy meter;

[0014] The threshold setting unit is used to set the safety energy consumption threshold curve under various working conditions;

[0015] The driving unit is used to send instructions to the dust detection module and the scaling detection module once the energy consumption monitoring module detects that the current energy consumption data exceeds the safe energy consumption threshold curve.

[0016] Wherein, the dust detection module includes an optical data acquisition unit, a feature extraction unit and a dust ratio calculation unit;

[0017] The optical data acquisition unit is used to scan the surface of the evaporator at preset intervals using an optical sensor to obtain optical data;

[0018] The feature extraction unit is used to collect data on reflected light intensity and transmittance on the surface of the evaporator based on the optical data;

[0019] The dust ratio calculation unit is used to calculate the ratio of the evaporator surface covered by dust based on the collected surface reflected light intensity and transmittance data.

[0020] Wherein, the dust ratio calculation unit includes a reference acquisition subunit, a light characteristic data calculation subunit, a dust area calculation subunit, and a coverage calculation subunit;

[0021] The reference acquisition subunit is used to record the initial reading of the sensor as a reference value when the evaporator is in a clean state;

[0022] The light characteristic data calculation subunit is used to extract reflected light intensity and transmittance data according to the sensor type;

[0023] The dust area calculation subunit is used to match the reflected light intensity and transmittance data with the sample data to calculate the dust coverage area;

[0024] The coverage rate calculation subunit is used to calculate the actual dust coverage ratio based on the dust coverage area in combination with the total area of ​​the evaporator.

[0025] Wherein, the dust area calculation subunit includes a sample database, an adjacent data matcher, and a linear estimator;

[0026] The sample database includes a variety of dust coverage samples, each sample includes corresponding reflected light intensity, light transmittance and a known dust coverage ratio;

[0027] The adjacent data matcher is used to compare the data features collected in real time with the data in the sample database using a nearest neighbor algorithm to find the closest sample data point;

[0028] The linear estimator is used to linearly calculate the dust coverage ratio of the current evaporator surface based on the closest sample data point in combination with the corresponding dust coverage ratio information in the sample database.

[0029] Wherein, the scaling detection module includes a pressure data acquisition unit, a reference data setting unit, a pressure difference calculation unit, and a scaling degree calculation unit;

[0030] The pressure data acquisition unit is used to acquire inlet pressure data and outlet pressure data at the inlet and outlet of the condenser;

[0031] The reference data setting unit is used to set the basic pressure difference value of the condenser in a clean state as the reference data;

[0032] The pressure difference calculation unit is used to obtain a pressure difference value by comparing the pressure calculated in real time with the initially set reference pressure;

[0033] The scaling degree calculation unit is used to match the corresponding scaling ratio value in the pressure scaling model based on the pressure difference value to obtain the scaling degree.

[0034] Wherein, the alarm module includes a data transmission unit, a judgment unit, and an alarm unit;

[0035] The data transmission unit is used to transmit the collected scaling degree and coverage degree data to the central processing unit;

[0036] The judgment unit is used to compare the scaling degree and the coverage degree with a preset safety threshold to obtain a comparison difference;

[0037] The alarm unit is used to issue an alarm if the comparison difference exceeds a preset threshold.

[0038] In a second aspect, the present invention further provides a control method for an air source heat pump water heater system, comprising:

[0039] When it is detected that the energy consumption of the air source heat pump water heater exceeds a preset value, the dust detection module and the scaling detection module are started to detect the status of the evaporator and the condenser;

[0040] Detect the degree of obstruction of dust attached to the evaporator;

[0041] Measure the pressure change before and after the fluid passes through the condenser to obtain the degree of scaling;

[0042] The scaling degree and coverage degree are sent to a central processing unit for analysis and comparison to determine whether they exceed a preset threshold value, and an alarm signal is issued when the dust or scaling degree exceeds the set threshold value;

[0043] When the degree of dust or scaling exceeds the set threshold, cleaning instructions are automatically generated and the user is prompted to perform corresponding maintenance operations.

[0044] The present invention provides a system and method for an air source heat pump water heater, wherein an energy consumption monitoring module monitors the overall energy consumption of the air source heat pump water heater in real time. The dust detection module is used to evaluate the degree of dust coverage on the surface of the evaporator. The module uses optical technology to measure the effect of dust on light reflection or transmission. When the dust accumulation reaches a certain level, the information will be transmitted to the central processing unit for further analysis. The scaling detection module is used to monitor the scaling formed by mineral deposition in the internal pipe of the condenser. The scaling degree is indirectly reflected by measuring the pressure change before and after the fluid passes through the condenser. As the scaling layer thickens, the flow resistance increases, resulting in an increase in the pressure difference between the inlet and outlet. The scaling detection module regularly collects these data and compares them with the baseline value to determine whether action is needed. The alarm module receives data from the dust detection module and the scaling detection module and sends it to the central processing unit for detailed analysis. If the analysis result shows that the degree of dust or scaling exceeds the preset safety threshold, the alarm module will immediately trigger an alarm signal to notify the user to pay attention to potential problems. The alarm can be in the form of sound, light or notification sent through a mobile application. The automatic cleaning instruction generation module automatically generates detailed cleaning instructions when excessive dust or scaling is detected, and provides the user with necessary guidance and support materials. It can generate personalized maintenance suggestions based on specific conditions, including recommended optimal cleaning time, required tools, and safety precautions. In addition, it may also provide links to online tutorials or video guides to help users better complete cleaning tasks.

[0045] By integrating the functions of the above modules, this air source heat pump water heater system can not only detect problems that may lead to reduced efficiency at an early stage, but also actively guide users to take appropriate preventive maintenance measures, thereby extending the service life of the equipment, reducing unnecessary energy waste, and ensuring the long-term stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 It is a structural diagram of a system of an air source heat pump water heater of the present invention.

[0048] Figure 2 It is a structural diagram of the energy consumption monitoring module of the present invention.

[0049] Figure 3 It is a structural diagram of the dust detection module of the present invention.

[0050] Figure 4 It is a structural diagram of the dust ratio calculation unit of the present invention.

[0051] Figure 5 It is a structural diagram of the dust area calculation subunit of the present invention.

[0052] Figure 6 It is a structural diagram of the alarm module of the present invention.

[0053] Figure 7 It is a structural diagram of the scaling detection module of the present invention.

[0054] Figure 8 It is a flow chart of a method for using a system of an air source heat pump water heater of the present invention.

[0055] Energy consumption monitoring module 101, dust detection module 102, scaling detection module 103, alarm module 104, automatic cleaning instruction generation module 105, maintenance time prediction module 106, data acquisition unit 107, threshold setting unit 108, drive unit 109, optical data acquisition unit 110, feature extraction unit 111, dust ratio calculation unit 112, benchmark acquisition subunit 113, light feature data calculation subunit 114, dust area calculation subunit 115, coverage calculation subunit 116, sample database 117, adjacent data matcher 118, linear estimator 119, data transmission unit 120, judgment unit 121, alarm unit 122, pressure data acquisition unit 123, benchmark data setting unit 124, pressure difference calculation unit 125, scaling degree calculation unit 126. DETAILED DESCRIPTION

[0056] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0057] First embodiment

[0058] See also Figure 1 to Figure 7 The present invention provides a system for an air source heat pump water heater, comprising an energy consumption monitoring module 101, a dust detection module 102, a scaling detection module 103, an alarm module 104, and an automatic cleaning instruction generation module 105; the energy consumption monitoring module 101 is used to detect that the energy consumption of the air source heat pump water heater exceeds a preset value, and start the dust detection module 102 and the scaling detection module 103 to detect the status of the evaporator and the condenser; the dust detection module 102 is used to detect the degree of obstruction of dust attached to the evaporator; the scaling detection module 103 is used to measure the pressure change before and after the fluid passes through the condenser to obtain the scaling degree; the alarm module 104 is used to send the scaling degree and the coverage degree to a central processing unit for analysis and comparison to determine whether they exceed a preset threshold, and send an alarm signal when the dust or scaling degree exceeds the set threshold; the automatic cleaning instruction generation module 105 is used to automatically generate a cleaning instruction and prompt the user to perform corresponding maintenance operations when the dust or scaling degree exceeds the set threshold.

[0059] In this embodiment, the energy consumption monitoring module 101 monitors the overall energy consumption of the air source heat pump water heater in real time. It can accurately measure the energy consumption of the system under various working conditions and compare it with the preset energy consumption threshold. Once it is detected that the current energy consumption exceeds the preset safety or efficiency threshold, the energy consumption monitoring module 101 will automatically activate the dust detection module 102 and the scaling detection module 103 to further check the status of the evaporator and the condenser.

[0060] The dust detection module 102 is used to evaluate the degree of dust coverage on the evaporator surface. The module uses optical technology to measure the effect of dust on light reflection or transmission. By analyzing the changes in the intensity of reflected light or transmittance on the evaporator surface, the proportion of dust coverage is calculated. When the dust accumulation reaches a certain level, the information will be passed to the central processing unit for further analysis. The scaling detection module 103 is used to monitor the scaling caused by mineral deposition in the internal pipes of the condenser. The degree of scaling is indirectly reflected by measuring the pressure changes before and after the fluid passes through the condenser. As the scaling layer thickens, the flow resistance increases, resulting in an increase in the pressure difference between the inlet and outlet. The scaling detection module 103 regularly collects this data and compares it with the baseline value to determine whether action is needed.

[0061] The alarm module 104 receives data from the dust detection module 102 and the scaling detection module 103 and sends it to the central processing unit for detailed analysis. If the analysis results show that the dust or scaling level exceeds the preset safety threshold, the alarm module 104 will immediately trigger an alarm signal to notify the user of the potential problem. The alarm can be in the form of sound, light or notification via a mobile application.

[0062] When the automatic cleaning instruction generation module 105 detects excessive dust or scaling, it automatically generates detailed cleaning instructions and provides the user with necessary guidance and support materials. It can generate personalized maintenance suggestions based on specific conditions, including recommended optimal cleaning time points, required tools, and safety precautions. In addition, it may also provide links to online tutorials or video guides to help users better complete cleaning tasks.

[0063] By integrating the functions of the above modules, this air source heat pump water heater system can not only detect problems that may lead to reduced efficiency at an early stage, but also actively guide users to take appropriate preventive maintenance measures, thereby extending the service life of the equipment, reducing unnecessary energy waste, and ensuring the long-term stable operation of the system.

[0064] The air source heat pump water heater system also includes a maintenance time prediction module 106, which is used to predict future high energy consumption periods based on energy consumption data, dust levels and scaling level historical records, and notify users in advance to perform preventive maintenance.

[0065] Specifically, the system continuously collects relevant data from the energy consumption monitoring module 101, the dust detection module 102 and the scaling detection module 103 to obtain historical data, including but not limited to energy consumption value, dust coverage ratio, pressure difference change, etc.

[0066] Then, key features are extracted from the historical data, including energy consumption fluctuation patterns in different seasons, dust accumulation rates in specific time periods, and scaling growth trends. Then, based on the extracted features, a prediction model is constructed using regression analysis. Based on the trained model, the maintenance time prediction module 106 can predict energy consumption in the future (such as the next few weeks or even months). This not only covers short-term high energy consumption risk warnings, but also mid-term trend analysis.

[0067] Based on the prediction results, a personalized preventive maintenance plan is automatically generated, including recommended optimal cleaning time and frequency, specific measures required, etc.

[0068] The energy consumption monitoring module 101 includes a data acquisition unit 107, a threshold setting unit 108 and a drive unit 109; the data acquisition unit 107 is used to continuously obtain the energy consumption data of the air source heat pump water heater through the electric energy meter; the threshold setting unit 108 is used to set the safe energy consumption threshold curve under various working conditions; the drive unit 109 is used to issue instructions to the dust detection module 102 and the scaling detection module 103 once the energy consumption monitoring module 101 detects that the current energy consumption data exceeds the safe energy consumption threshold curve.

[0069] The data acquisition unit 107 continuously acquires the energy consumption data of the air source heat pump water heater by connecting to the electric energy meter. This unit ensures the real-time and accuracy of the energy consumption information and provides reliable data support for subsequent analysis and processing. It can capture the energy consumption changes of the equipment under different working conditions, thereby helping users better understand the actual operating efficiency of the equipment.

[0070] The threshold setting unit 108 allows the user to customize the safe energy consumption threshold curve according to different working conditions. These thresholds are determined based on multiple factors such as the technical parameters of the equipment, the operating environment, and historical energy consumption data, and are used as a standard to measure whether the equipment is within the normal energy consumption range. After these thresholds are set, the system can use them to determine whether the current energy consumption state exceeds the safety limit.

[0071] The drive unit 109 plays an important role when the energy consumption monitoring module 101 detects that the current energy consumption data exceeds the preset safety energy consumption threshold curve. Once this happens, the drive unit 109 will immediately issue instructions to the dust detection module 102 and the scaling detection module 103. This mechanism is designed to promptly identify the root causes of problems that may lead to abnormal increases in energy consumption, such as dust accumulation or internal scaling, and take corresponding maintenance measures to ensure that the air source heat pump water heater always operates in an efficient and safe state. This automated monitoring and response mechanism greatly improves the efficiency and reliability of equipment management, helps to extend the service life of equipment and reduce operating costs.

[0072] The dust detection module 102 includes an optical data acquisition unit 110, a feature extraction unit 111 and a dust ratio calculation unit 112; the optical data acquisition unit 110 is used to use an optical sensor to scan the surface of the evaporator at preset intervals to obtain optical data; the feature extraction unit is used to collect data on the reflected light intensity and transmittance of the evaporator surface based on the optical data; the dust ratio calculation unit is used to calculate the proportion of the evaporator surface covered by dust based on the collected surface reflected light intensity and transmittance data.

[0073] The optical data acquisition unit 110 uses a high-precision optical sensor to scan the surface of the evaporator according to a preset period to obtain detailed optical data. This non-contact detection method can avoid any physical damage to the evaporator and can provide stable and reliable measurement results.

[0074] Next, the feature extraction unit further collects specific information about the intensity and transmittance of the reflected light on the evaporator surface based on the acquired optical data. These parameters are crucial for evaluating the cleanliness of the evaporator surface because they directly reflect the accumulation of impurities such as dust on the surface.

[0075] The dust ratio calculation unit is responsible for accurately calculating the proportion of the evaporator surface covered by dust based on the above reflected light intensity and transmittance data.

[0076] The dust ratio calculation unit includes a reference acquisition subunit 113, a light characteristic data calculation subunit 114, a dust area calculation subunit 115, and a coverage calculation subunit 116; the reference acquisition subunit 113 is used to record the initial reading of the sensor as a reference value when the evaporator is in a clean state; the light characteristic data calculation subunit 114 is used to extract the reflected light intensity and transmittance data according to the sensor type; the dust area calculation subunit 115 is used to match the reflected light intensity and transmittance data with the sample data to calculate the dust coverage area; the coverage calculation subunit 116 is used to calculate the actual dust coverage ratio based on the dust coverage area in combination with the total area of ​​the evaporator.

[0077] The reference acquisition subunit 113 records the initial readings of the sensor when the evaporator is completely clean as reference values ​​for subsequent comparisons, which include key parameters such as reflected light intensity and light transmittance without dust interference.

[0078] The light characteristic data calculation subunit 114 extracts and analyzes the data of reflected light intensity and transmittance according to the type of sensor used. This subunit scans the surface of the evaporator through a high-precision optical sensor and collects information on reflected light intensity and transmittance at different locations. These data not only reflect the interaction between light and surface materials, but also provide necessary input for the subsequent estimation of dust area.

[0079] The dust area calculation subunit 115 matches the real-time collected reflected light intensity and transmittance data with the data in the pre-stored sample database 117 to calculate the specific area covered by dust. The sample database 117 contains sample data of various dust coverage degrees, and each sample records the corresponding reflected light intensity, transmittance and known dust coverage ratio in detail. The dust area calculation subunit 115 uses the nearest neighbor algorithm and other technologies to compare the real-time data with the closest sample data, thereby estimating the actual area covered by dust on the current evaporator surface.

[0080] The coverage rate calculation subunit 116 calculates the actual dust coverage ratio based on the dust coverage area obtained by the dust area calculation subunit 115 and the total area of ​​the evaporator. This step involves dividing the dust coverage area by the total surface area of ​​the evaporator to obtain a value between 0 and 1, indicating the degree of dust coverage. In this way, the user can intuitively understand the cleanliness of the evaporator surface and decide whether cleaning and maintenance operations are needed.

[0081] The dust area calculation subunit 115 includes a sample database 117, an adjacent data matcher 118, and a linear estimator 119; the sample database 117 contains a variety of dust coverage samples, each sample contains corresponding reflected light intensity, transmittance and a known dust coverage ratio; the adjacent data matcher 118 is used to use a nearest neighbor algorithm to compare the data features collected in real time with the data in the sample database 117 to find the closest sample data point; the linear estimator 119 is used to linearly calculate the dust coverage ratio of the current evaporator surface based on the closest sample data point combined with the corresponding dust coverage ratio information in the sample database 117.

[0082] The dust area calculation subunit 115 includes a rich sample database 117, which stores a variety of samples with different dust coverage levels. Each sample records the corresponding reflected light intensity, light transmittance and known dust coverage ratio in detail. The adjacent data matcher 118 uses the nearest neighbor algorithm to compare the real-time collected data features with the data in the sample database 117 to find the closest sample data point to ensure the accuracy of the match. The linear estimator 119 determines the dust coverage ratio of the current evaporator surface through linear calculation based on the closest sample data point found and its associated dust coverage ratio information, providing a scientific basis for subsequent cleaning and maintenance decisions.

[0083] The scaling detection module 103 includes a pressure data acquisition unit 123, a reference data setting unit 124, a pressure difference calculation unit 125, and a scaling degree calculation unit 126; the pressure data acquisition unit 123 is used to acquire inlet pressure data and outlet pressure data at the inlet and outlet of the condenser; the reference data setting unit 124 is used to set the basic pressure difference value of the condenser in a clean state as the reference data; the pressure difference calculation unit 125 is used to obtain the pressure difference value by comparing the pressure calculated in real time with the initially set reference pressure; the scaling degree calculation unit 126 is used to match the corresponding scaling ratio value in the pressure scaling model based on the pressure difference value to obtain the scaling degree.

[0084] The pressure data acquisition unit 123 collects inlet pressure data and outlet pressure data at the inlet and outlet of the condenser, respectively. By real-time monitoring of the pressure changes at these two locations, the resistance encountered by the fluid passing through the condenser can be accurately reflected, thereby providing basic data support for subsequent analysis. This dual-point pressure measurement method helps to accurately capture pressure fluctuations caused by internal scaling and improve diagnostic accuracy.

[0085] Next, the reference data setting unit 124 records and sets a basic pressure difference as reference data when the condenser is in a completely clean state. This reference data is crucial for subsequent judgment of whether the condenser has a scaling problem, because it represents the working performance parameters of the condenser under an ideal state. Depending on the different equipment models and technical specifications, this reference value may be different, so it needs to be personalized for each equipment.

[0086] The pressure difference calculation unit 125 then compares the pressure difference value calculated in real time with the initially set reference pressure difference value to obtain the actual pressure difference value. This step is the core of the entire scaling detection process, because any deviation from the reference value may indicate varying degrees of scaling inside the condenser. By continuously tracking these changes, the system can detect potential problems in a timely manner and take corresponding measures.

[0087] Finally, the scaling degree calculation unit 126 matches the corresponding scaling ratio value in the pre-established pressure scaling model based on the pressure difference value calculated above, thereby determining the specific scaling degree. The model comprehensively considers the impact of different types of scaling on the condenser pressure difference and is constructed through a large amount of experimental data and case analysis. When the actual pressure difference value detected is input into the model, the corresponding scaling ratio can be output, intuitively displaying the current scaling condition inside the condenser.

[0088] The alarm module 104 includes a data transmission unit 120, a judgment unit 121, and an alarm unit 122; the data transmission unit 120 is used to transmit the collected scaling degree and coverage degree data to the central processing unit; the judgment unit 121 is used to compare the scaling degree and coverage degree with a preset safety threshold to obtain a comparison difference; the alarm unit 122 is used to issue an alarm if the comparison difference exceeds the preset threshold.

[0089] The data transmission unit 120 is the data communication hub of the entire alarm module 104. Its main responsibility is to transmit the data of the evaporator surface coverage (dust coverage rate) and the condenser internal scaling (scaling degree) collected from the dust detection module 102 and the scaling detection module 103 to the central processing unit. This process ensures that all key information can be accurately and centrally processed, providing a solid foundation for subsequent analysis. In order to ensure the reliability and real-time nature of data transmission, the data transmission unit 120 adopts efficient data transmission protocols and technologies, so that the integrity and accuracy of the data can be maintained even in complex industrial environments.

[0090] Then, the judgment unit 121 evaluates whether the current state of the device is within a safe range by comparing the received scaling and coverage data with the preset safety threshold. Specifically, the judgment unit 121 calculates the difference between the actual test result and the preset safety standard, that is, the comparison difference. This step is crucial because it directly determines whether the equipment needs maintenance or cleaning operations to avoid potential risks. In order to ensure the accuracy of the assessment, the judgment unit 121 dynamically adjusts the safety threshold according to factors such as equipment type, usage environment and historical data, so as to achieve more accurate monitoring.

[0091] Finally, the alarm unit 122 is the "speaker" in the alarm module 104. Once the comparison difference obtained by the judgment unit 121 exceeds the preset threshold, indicating that the equipment has a safety hazard or reduced efficiency, the alarm unit 122 will immediately activate the alarm mechanism. The alarm can be in the form of a sound alarm, a light signal, or sending a notification to a designated mobile device or computer, so that the user can respond quickly. In addition, the alarm unit 122 can also set different levels of alarm signals according to different levels of urgency. For example, a minor problem may only trigger a low-level warning, while a serious problem will trigger a high-level emergency alarm, prompting the user to take immediate action.

[0092] Second embodiment

[0093] See also Figure 8 The present invention also provides a control method for an air source heat pump water heater system, comprising:

[0094] When it is detected in S201 that the energy consumption of the air source heat pump water heater exceeds a preset value, the dust detection module 102 and the scaling detection module 103 are started to detect the status of the evaporator and the condenser;

[0095] When the system detects that the energy consumption of the air source heat pump water heater exceeds the preset value, it usually means that the equipment may have a problem of reduced efficiency. At this time, the system automatically starts the dust detection module 102 and the scaling detection module 103 to perform detailed inspections on the status of the evaporator and condenser respectively. This measure is intended to promptly detect factors that may lead to increased energy consumption, such as dust accumulation on the surface of the evaporator or scaling inside the condenser.

[0096] S202 detects the degree of obstruction of dust attached to the evaporator;

[0097] After starting the dust detection module 102, the system will detect the degree of dust covering the evaporator. By using a high-precision optical sensor, the surface of the evaporator is scanned according to a preset period, detailed optical data is obtained, and the dust coverage ratio is calculated based on this data. This step is crucial for evaluating the working efficiency of the evaporator, because the accumulation of dust will directly affect the heat exchange efficiency, thereby increasing energy consumption.

[0098] S203 measures the pressure change of the fluid before and after passing through the condenser to obtain the degree of scaling;

[0099] At the same time, the system will also use the scaling detection module 103 to measure the pressure change before and after the fluid passes through the condenser to evaluate the degree of scaling. Specifically, the system will collect pressure data at the inlet and outlet of the condenser and calculate the actual pressure difference based on these data. By comparing with the basic pressure difference set in the clean state, it is possible to accurately determine whether there is a scaling problem inside the condenser and its severity.

[0100] S204 sends the scaling degree and coverage degree to the central processing unit for analysis and comparison to determine whether they exceed a preset threshold, and issues an alarm signal when the dust or scaling degree exceeds the set threshold;

[0101] The system then transmits the resulting data on scaling (scaling level) and coverage (dust obstruction level) to the central processing unit. Here, all collected information is analyzed and compared with other preset safety thresholds. If any indicator exceeds the set threshold range, the system will immediately issue an alarm signal to alert the user to potential problems. This instant feedback mechanism helps to quickly locate the source of the problem and prevent further damage.

[0102] S205 When the degree of dust or scaling exceeds a set threshold, a cleaning instruction is automatically generated and the user is prompted to perform corresponding maintenance operations.

[0103] Once it is confirmed that the degree of dust or scaling exceeds the set threshold, the system will not only issue an alarm, but also automatically generate cleaning instructions and notify the user to perform the corresponding maintenance operations through interface prompts or other means. Doing so will not only help users better manage the equipment, but also effectively extend the service life of the equipment and improve overall operating efficiency. In addition, regular cleaning and maintenance can significantly reduce long-term operating costs and ensure that the air source heat pump water heater is always in the best working condition.

[0104] In summary, this method realizes intelligent monitoring and maintenance of air source heat pump water heaters through a series of automated processes, greatly improving the efficiency of equipment management and fault prevention. It can not only detect problems in a timely manner, but also provide specific solutions to help users maintain the best performance of the equipment.

[0105] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. An air source heat pump water heater system, characterized in that: It includes energy consumption monitoring module, dust detection module, scaling detection module, alarm module and automatic cleaning instruction generation module; The energy consumption monitoring module is used to start the dust detection module and the scaling detection module to detect the status of the evaporator and the condenser when it detects that the energy consumption of the air source heat pump water heater exceeds a preset value; The dust detection module is used to detect the degree of obstruction of dust attached to the evaporator; The scaling detection module is used to measure the pressure change of the fluid before and after passing through the condenser to obtain the scaling degree; The alarm module is used to send the scaling degree and coverage degree to the central processing unit for analysis and comparison to determine whether they exceed a preset threshold value, and to issue an alarm signal when the dust or scaling degree exceeds the set threshold value; The automatic cleaning instruction generation module is used to automatically generate a cleaning instruction and prompt the user to perform corresponding maintenance operations when the degree of dust or scaling exceeds a set threshold.

2. The air source heat pump water heater system according to claim 1, characterized in that: The system of the air source heat pump water heater also includes a maintenance time prediction module, which is used to predict future high energy consumption periods based on energy consumption data, dust levels and historical records of scaling levels, and notify users in advance to perform preventive maintenance.

3. The air source heat pump water heater system according to claim 2, characterized in that: The energy consumption monitoring module includes a data acquisition unit, a threshold setting unit and a driving unit; The data acquisition unit is used to continuously acquire energy consumption data of the air source heat pump water heater through an electric energy meter; The threshold setting unit is used to set the safety energy consumption threshold curve under various working conditions; The driving unit is used to send instructions to the dust detection module and the scaling detection module once the energy consumption monitoring module detects that the current energy consumption data exceeds the safe energy consumption threshold curve.

4. The air source heat pump water heater system according to claim 3, characterized in that: The dust detection module includes an optical data acquisition unit, a feature extraction unit and a dust ratio calculation unit; The optical data acquisition unit is used to scan the surface of the evaporator at preset intervals using an optical sensor to obtain optical data; The feature extraction unit is used to collect data on reflected light intensity and transmittance on the surface of the evaporator based on the optical data; The dust ratio calculation unit is used to calculate the ratio of the evaporator surface covered by dust based on the collected surface reflected light intensity and transmittance data.

5. The air source heat pump water heater system according to claim 4, characterized in that: The dust ratio calculation unit includes a reference acquisition subunit, a light characteristic data calculation subunit, a dust area calculation subunit, and a coverage calculation subunit; The reference acquisition subunit is used to record the initial reading of the sensor as a reference value when the evaporator is in a clean state; The light characteristic data calculation subunit is used to extract reflected light intensity and transmittance data according to the sensor type; The dust area calculation subunit is used to match the reflected light intensity and transmittance data with the sample data to calculate the dust coverage area; The coverage rate calculation subunit is used to calculate the actual dust coverage ratio based on the dust coverage area in combination with the total area of ​​the evaporator.

6. The air source heat pump water heater system according to claim 5, characterized in that: The dust area calculation subunit includes a sample database, an adjacent data matcher, and a linear estimator; The sample database includes a variety of dust coverage samples, each sample including corresponding reflected light intensity, light transmittance and known dust coverage ratio; The adjacent data matcher is used to compare the data features collected in real time with the data in the sample database using a nearest neighbor algorithm to find the closest sample data point; The linear estimator is used to linearly calculate the dust coverage ratio of the current evaporator surface based on the closest sample data point in combination with the corresponding dust coverage ratio information in the sample database.

7. The air source heat pump water heater system according to claim 6, characterized in that: The scaling detection module includes a pressure data acquisition unit, a reference data setting unit, a pressure difference calculation unit, and a scaling degree calculation unit; The pressure data acquisition unit is used to acquire inlet pressure data and outlet pressure data at the inlet and outlet of the condenser; The reference data setting unit is used to set the basic pressure difference value of the condenser in a clean state as the reference data; The pressure difference calculation unit is used to obtain a pressure difference value by comparing the pressure calculated in real time with the initially set reference pressure; The scaling degree calculation unit is used to match the corresponding scaling ratio value in the pressure scaling model based on the pressure difference value to obtain the scaling degree.

8. The air source heat pump water heater system according to claim 7, characterized in that: The alarm module includes a data transmission unit, a judgment unit, and an alarm unit; The data transmission unit is used to transmit the collected scaling degree and coverage degree data to the central processing unit; The judgment unit is used to compare the scaling degree and the coverage degree with a preset safety threshold to obtain a comparison difference; The alarm unit is used to issue an alarm if the comparison difference exceeds a preset threshold.

9. A control method for an air source heat pump water heater system, using the air source heat pump water heater system according to any one of claims 1 to 8, characterized in that: include: When it is detected that the energy consumption of the air source heat pump water heater exceeds a preset value, the dust detection module and the scaling detection module are started to detect the status of the evaporator and the condenser; Detect the degree of obstruction of dust attached to the evaporator; Measure the pressure change before and after the fluid passes through the condenser to obtain the degree of scaling; The scaling degree and coverage degree are sent to a central processing unit for analysis and comparison to determine whether they exceed a preset threshold value, and an alarm signal is issued when the dust or scaling degree exceeds the set threshold value; When the degree of dust or scaling exceeds the set threshold, cleaning instructions are automatically generated and the user is prompted to perform corresponding maintenance operations.

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