Power calibration method and device and medium

Abstract

The invention provides a power calibration method and device and a medium. The power calibration method is used for calibrating the output power of the heat supply equipment, the heat supply equipment is provided with a heating flow path used for circulating a heating medium and a fuel gas channel used for introducing a combustion medium, and the power calibration method comprises the steps that the heat supply equipment is made to operate according to preset power; the temperature and flow of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path are obtained, so that the liquid inlet temperature and flow at the liquid inlet and the liquid outlet temperature at the liquid outlet are obtained; the actual output power of the heat supply equipment is obtained according to the liquid inlet temperature, the liquid inlet flow and the liquid outlet temperature; and the gas output quantity of the gas channel corresponding to the preset power is adjusted according to the difference value between the preset power and the actual output power. Through the technical scheme provided by the invention, the problem of low power calibration efficiency of the heat supply equipment in the prior art can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heating equipment, and in particular, to a power calibration method, device and medium. Background Art

[0002] At present, although the wall-mounted boiler will be power-calibrated under standard conditions before leaving the factory to ensure that its power is within the deviation range required by the national standard.

[0003] However, due to differences in user installation conditions, the wall-mounted boiler equipment often shows a significant deviation from the preset power during actual operation. This power deviation not only leads to low energy efficiency, but also affects the user's comfort experience and the long-term durability of the equipment. Usually, it is necessary for on-site installation technicians to adjust the secondary gas pressure or flue gas composition to recalibrate the power to ensure that the power of the wall-mounted boiler can operate within the preset range. However, such a calibration method has low calibration efficiency and the effect is difficult to guarantee. Summary of the Invention

[0004] The main object of the present invention is to provide a power calibration method, device and medium to solve the problem of low power calibration efficiency of heating equipment in the prior art.

[0005] To achieve the above object, according to one aspect of the present invention, a power calibration method is provided for calibrating the output power of a heating equipment. The heating equipment has a heating flow path for circulating a heating medium and a gas channel for introducing a combustion medium. The power calibration method includes:

[0006] Operating the heating equipment at a preset power;

[0007] Obtaining the temperature and flow rate of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path to obtain the inlet liquid temperature and inlet liquid flow rate at the liquid inlet, and the outlet liquid temperature at the liquid outlet; obtaining the actual output power of the heating equipment according to the inlet liquid temperature, inlet liquid flow rate and outlet liquid temperature;

[0008] Comparing the preset power with the actual output power, and adjusting the gas output of the gas channel corresponding to the preset power according to the difference between the preset power and the actual output power.

[0009] Further, the preset power includes a first preset power and a second preset power, and the second preset power is less than the first preset power; operating the heating equipment at a preset power includes:

[0010] Operating the heating equipment at the first preset power and the second preset power in sequence.

[0011] Further, the first preset power is the maximum output power of the heating device, and the second preset power is the minimum output power of the heating device.

[0012] Further, before obtaining the temperature and flow rate of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path, the power calibration method further includes:

[0013] Continuously obtain the current temperature of the heating medium at the liquid outlet within a preset duration, and determine whether the heating device is in a stable liquid outlet state according to the current temperatures of the heating medium at the liquid outlets obtained within the preset duration.

[0014] Further, determining whether the heating device is in a stable liquid outlet state according to the current temperatures of the heating medium at the liquid outlets obtained within the preset duration includes:

[0015] When the maximum difference between the current temperatures of the heating medium at the liquid outlets obtained within the preset duration is less than or equal to the preset stable temperature difference, it is determined that the heating device is in a stable liquid outlet state;

[0016] When the maximum difference between the current temperatures of the heating medium at the liquid outlets obtained within the preset duration is greater than the preset stable temperature difference, it is determined that the heating device is not in a stable liquid outlet state, and the heating device continues to operate at the preset power.

[0017] Further, the preset duration is greater than or equal to 8 s and less than or equal to 15 s; and / or,

[0018] The preset stable temperature difference is greater than or equal to 0 °C and less than or equal to 1 °C.

[0019] Further, adjusting the gas output of the gas channel corresponding to the preset power according to the difference between the preset power and the actual output power includes:

[0020] When the actual output power is less than the preset power, increase the gas output of the gas channel corresponding to the preset power;

[0021] When the actual output power is greater than the preset power, decrease the gas output of the gas channel corresponding to the preset power;

[0022] When the actual output power is equal to the preset power, keep the gas output of the gas channel corresponding to the preset power unchanged.

[0023] Further, adjusting the gas output of the gas channel corresponding to the preset power includes: adjusting the magnitude of the gas output pressure of the gas channel corresponding to the preset power.

[0024] Further, a proportional valve is provided on the gas passage to adjust the gas output pressure of the gas passage, including: adjusting the magnitude of the input current of the proportional valve.

[0025] Further, before making the heating device operate at a preset power, the power calibration method further includes: continuously obtaining the current environmental parameters of the environment where the heating device is located, where the current environmental parameters include any one or more of temperature, humidity, and atmospheric pressure; judging whether to perform power calibration on the output power of the heating device according to the magnitude of the difference between the corresponding current environmental parameters obtained twice before and after; wherein, judging whether to perform power calibration on the output power of the heating device according to the magnitude of the difference between the corresponding current environmental parameters obtained twice before and after includes:

[0026] When the difference between the corresponding current environmental parameters obtained twice before and after is greater than the corresponding preset change difference, it is determined that power calibration is required, and the heating device enters the power calibration state;

[0027] When the difference between the corresponding current environmental parameters obtained twice before and after is less than or equal to the corresponding preset change difference, it is determined that power calibration is not required, and the heating device maintains its current working state.

[0028] Further, before making the heating device operate at a preset power, the power calibration method further includes:

[0029] Obtaining the cumulative operation times of the heating device;

[0030] When the cumulative operation times are less than the preset times, the heating device enters the power calibration state;

[0031] When the cumulative operation times are greater than or equal to the preset times, the heating device maintains its current working state.

[0032] According to another aspect of the present invention, there is provided a power calibration device applicable to the above power calibration method. The power calibration device includes:

[0033] A control unit for making the heating device operate at a preset power;

[0034] An acquisition unit for acquiring the temperature and flow rate of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path to obtain the inlet liquid temperature and inlet liquid flow rate at the liquid inlet, and the outlet liquid temperature at the liquid outlet; obtaining the actual output power of the heating device according to the inlet liquid temperature, inlet liquid flow rate, and outlet liquid temperature;

[0035] An adjustment unit for adjusting the gas output of the gas passage corresponding to the preset power according to the difference between the preset power and the actual output power.

[0036] According to another aspect of the present invention, a non-volatile storage medium is provided. The non-volatile storage medium includes a stored program, wherein when the program runs, it controls the device where the non-volatile storage medium is located to execute the above-mentioned power calibration method.

[0037] Applying the technical solution of the present invention, by calibrating the actual power output of the heating device at a preset power, it is ensured that the output power during device operation is consistent with the power value set by the user or preset by the manufacturer. This method can calculate the actual output power by measuring the temperature and flow rate of the heating medium at the inlet and outlet of the heating flow path and using the principles of thermodynamics, thereby realizing the comparison between the actual output power and the preset power, and further determining the deviation between the actual output power and the preset power. Then, by adjusting the gas output, the actual output power is adjusted, and thus precise control of the power output is achieved. Through such a power calibration method, compared with the need for manual adjustment at the actual installation site in the prior art, the complex process of on-site secondary adjustment is avoided, the installation efficiency of the heating device is improved, the use effect of the heating device is ensured, the user experience is enhanced, and the later maintenance rate is reduced. Therefore, through the technical solution of the present invention, the problem of low power calibration efficiency of heating devices in the prior art can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0039] Figure 1 It shows a schematic diagram of the steps of the power calibration method provided according to an embodiment of the present invention;

[0040] Figure 2 It shows a flow diagram of the power calibration method provided according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0042] Such as Figure 1 And Figure 2As shown in the figure, an embodiment of the present invention provides a power calibration method. The power calibration method is used to calibrate the output power of a heating device. The heating device has a heating flow path for circulating a heating medium and a gas passage for introducing a combustion medium. The power calibration method includes: operating the heating device at a preset power; obtaining the temperature and flow rate of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path to obtain the inlet liquid temperature and inlet liquid flow rate at the liquid inlet and the outlet liquid temperature at the liquid outlet; obtaining the actual output power of the heating device according to the inlet liquid temperature, inlet liquid flow rate and outlet liquid temperature; comparing the preset power with the actual output power, and adjusting the gas output of the gas passage corresponding to the preset power according to the difference between the preset power and the actual output power.

[0043] By adopting the power calibration method provided by an embodiment of the present invention, by calibrating the actual power output of the heating device at the preset power, it is ensured that the output power during the operation of the device is consistent with the power value set by the user or preset by the manufacturer. This method can calculate the actual output power by measuring the temperature and flow rate of the heating medium at the inlet and outlet of the heating flow path and using the thermodynamic principle, so as to realize the comparison between the actual output power and the preset power, and then determine the deviation between the actual output power and the preset power, and thus adjust the actual output power by adjusting the gas output, and further realize the precise control of the power output. Through such a power calibration method, compared with the need for manual adjustment at the actual installation site in the prior art, the complex process of on-site secondary adjustment is avoided, the installation efficiency of the heating device is improved, the use effect of the heating device is ensured, the user experience is enhanced, and the later maintenance rate is reduced. Therefore, through the power calibration method provided by this embodiment, the problem of low power calibration efficiency of the heating device in the prior art can be solved.

[0044] It should be noted that the heating device includes a heating equipment and a hot water supply equipment. The heating equipment includes a wall-mounted boiler, a gas heater, an oil heater, etc. The hot water supply equipment includes a gas water heater.

[0045] Specifically, the heating equipment is a wall-mounted boiler. The wall-mounted boiler includes a burner, a heat exchanger, a gas proportional valve, a circulation pump, a control board, a flue gas system, temperature and pressure sensors, and a water circuit system. The burner is responsible for burning gas (such as natural gas, liquefied petroleum gas) to generate heat. The heat exchanger is used to transfer the heat generated by the burner to the medium (usually water) of the heating system and the hot water supply system. There are various types of heat exchangers, such as shell-and-tube or plate heat exchangers, to improve the heat transfer efficiency. The gas proportional valve is a key device for controlling the gas flow. By adjusting the opening degree inside the valve, the gas supply can be precisely controlled to achieve stepless adjustment of the power output. The proportional valve is usually driven electromagnetically, and the magnitude of its control current determines the opening degree of the valve and the gas output pressure. The circulation pump is responsible for pushing the water flow in the heating system to ensure that the water circulates in the heat exchanger and the heating pipes, so as to evenly distribute the heat energy throughout the heating system. The control board is responsible for receiving the control signals input by the user (such as the set temperature) and the data feedback from the sensors, and adjusting the working states of the burner, the circulation pump, and the gas proportional valve through the preset control logic to meet the heating or hot water demand set by the user. The flue gas system is responsible for discharging the exhaust gas (such as carbon dioxide, water vapor) generated by combustion from the combustion chamber to the outside, and introducing fresh air for combustion. The wall-mounted boiler can be equipped with a balanced flue or a forced exhaust flue to adapt to different installation environments. The temperature and pressure sensors are used to monitor the temperature and pressure of the internal and external media (water) of the wall-mounted boiler, and provide real-time data for the control board to analyze to ensure that the equipment operates under safe and efficient conditions. The water circuit system includes a hot water flow path and a heating water circuit, which are used for domestic hot water supply and the circulation of the heating system respectively. The water circuit system includes pipes, valves, and filters to ensure smooth water flow and remove impurities.

[0046] Specifically, the heating medium is water. The heating flow path can be the hot water flow path for domestic water or the heating water circuit for heating water. In this way, the versatility and flexibility of the power calibration method are improved. This means that the power calibration method can be applied whether providing domestic hot water or heating, enhancing the multi-scenario compatibility of the equipment and meeting the different needs of users for hot water and heating in different seasons and at different times.

[0047] Specifically, when the heating flow path is the hot water flow path for domestic water, after the heating device operates at a preset power, the power calibration method further includes: operating the heating device in the hot water mode. The inlet temperature, inlet flow rate, and outlet temperature are respectively the inlet temperature at the inlet of the hot water flow path, the inlet flow rate at the inlet of the hot water flow path, and the outlet temperature at the outlet of the hot water flow path. With such a setting, the power calibration method is specified for the hot water mode, ensuring that in the domestic hot water supply scenario, the device can operate precisely according to the power set by the user or preset by the manufacturer. By accurately measuring the water temperature and flow rate at the inlet and outlet of the hot water flow path, the actual power calculated using the thermodynamic principle can directly reflect the output power of the heating device. By calibrating the output power, the timeliness and temperature stability of hot water supply are improved, the user's hot water usage experience is optimized, and energy waste is reduced. And in the existing technology, temperature detection components and flow detection components are usually already set at the inlet and outlet of the hot water flow path of the wall-mounted boiler. Using such a method can efficiently utilize the original detection components of the device for detection, improve the usage efficiency of the heating device, and effectively save costs.

[0048] Specifically, when the heating flow path is the heating water circuit for heating water, after the heating device operates at a preset power, the power calibration method further includes: operating the heating device in the heating mode. The inlet temperature, inlet flow rate, and outlet temperature are respectively the inlet temperature at the inlet of the heating water circuit, the inlet flow rate at the inlet of the heating water circuit, and the outlet temperature at the outlet of the heating water circuit. With such a setting, power calibration is carried out in the heating mode, ensuring that in the case of winter heating or constant temperature heating required, the heating device can stably operate at the power set by the user, providing continuous and uniform heat energy output. By monitoring the water temperature and flow rate at the inlet and outlet of the heating water circuit, the heating efficiency can be accurately evaluated, ensuring that the heat energy distribution of the heating system is both uniform and efficient, improving the accuracy and comfort of indoor temperature adjustment, strengthening the energy-saving performance of the heating system, and reducing the operating cost.

[0049] Specifically, the power calibration method can also be used for other devices with a heating flow path, such as a water heater. When used to calibrate the output power of a gas water heater, the gas output of the gas passage corresponding to the preset power is adjusted according to the difference between the preset power and the actual output power; when used to calibrate the output power of an electric water heater, the magnitude of the input current corresponding to the preset power is adjusted according to the difference between the preset power and the actual output power.

[0050] Specifically, the gas passage is a passage for inputting combustion gas to the burner. The combustion medium is combustion gas such as natural gas and liquefied petroleum gas. In this way, by precisely controlling the gas output of the gas passage, the combustion efficiency of the burner can be directly affected, and then the output power of the heating device can be adjusted.

[0051] Specifically, the method for adjusting the gas output of the gas passage corresponding to the preset power includes: adjusting the magnitude of the gas output pressure of the gas passage corresponding to the preset power. With such a setting, by changing the gas output pressure, the gas flow can be directly affected, thereby precisely controlling the combustion intensity of the burner. This method utilizes the relationship between gas pressure and flow rate to achieve the regulation of gas output. By controlling the magnitude of the pressure, the wall-mounted boiler can respond quickly, thereby achieving the adjustment of the actual output power, improving the real-time performance and accuracy of power adjustment, and at the same time facilitating the reduction of gas consumption and the improvement of energy utilization efficiency.

[0052] In one embodiment, a proportional valve is provided on the gas passage. The method for adjusting the magnitude of the gas output pressure of the gas passage includes: adjusting the magnitude of the input current of the proportional valve. Specifically, the input current of the proportional valve refers to the control current input to the proportional valve to control the opening degree of the proportional valve. With such a setting, the proportional valve, as a key control element of the gas passage, the magnitude of its input current directly determines the gas output flow rate. By adjusting the input current of the proportional valve, precise control of the gas pressure can be achieved, and then the power output of the burner can be adjusted. This electronic proportional control method is more stable and accurate than traditional mechanical regulation, can quickly respond to power change requirements, and reduce instability and power fluctuations during the combustion process.

[0053] Specifically, the method for obtaining the actual output power of the heating device based on the inlet liquid temperature, inlet liquid flow rate, and outlet liquid temperature is: according to the heat transfer formula Q = m·c(T 出 -T 进 ), calculate the actual output power Q; where m is the inlet liquid flow rate, T 出 is the outlet liquid temperature, T 进 is the inlet liquid temperature, and c is the specific heat capacity of the heating medium. In this way, by directly measuring the temperatures T 进 and T 出 of the heating medium at the inlet and outlet of the heating flow path, as well as the inlet liquid flow rate m, and combining the specific heat capacity c of the medium, the actual output power Q of the heating device under specific operating conditions can be accurately calculated, providing a more direct and reliable power measurement scheme, thereby improving the accuracy and reliability of power calibration.

[0054] Specifically, the preset power is the output power of the heating device, and the preset power is greater than or equal to the minimum output power of the heating device and less than or equal to the maximum output power of the heating device. In this way, by calibrating the actual output power of the heating device at the preset power, the safety hazards caused by the device operating outside the design range can be avoided, and then the energy utilization efficiency and operating stability of the device can be safely optimized.

[0055] It should be noted that the heating equipment has a corresponding preset gas output at different output powers. When the heating equipment operates at a specific output power, the equipment will automatically make the current gas output the preset amount corresponding to the specific output power.

[0056] Specifically, the preset powers include a first preset power and a second preset power, and the second preset power is less than the first preset power; the method of making the heating equipment operate at the preset power includes: making the heating equipment operate at the first preset power and the second preset power in sequence. With such a setting, by setting two different preset powers, the performance of the equipment under extreme working conditions can be tested. Since there is a certain curve characteristic between the input current and the output air pressure of the gas proportional valve, by calibrating the first preset power and the second preset power, the output power in the range from the second preset power to the first preset power can be calibrated, improving the calibration efficiency.

[0057] Specifically, the power calibration method includes: making the heating equipment operate at the first preset power, obtaining the first inlet liquid temperature, the first inlet liquid flow rate, and the first outlet liquid temperature corresponding to the first preset power, and obtaining the first actual output power based on the first inlet liquid temperature, the first inlet liquid flow rate, and the first outlet liquid temperature, and adjusting the gas output of the gas channel corresponding to the first preset power according to the difference between the first preset power and the first actual output power; making the heating equipment operate at the second preset power, obtaining the second inlet liquid temperature, the second inlet liquid flow rate, and the second outlet liquid temperature corresponding to the second preset power, and obtaining the second actual output power based on the second inlet liquid temperature, the second inlet liquid flow rate, and the second outlet liquid temperature, and adjusting the gas output of the gas channel corresponding to the second preset power according to the difference between the second preset power and the second actual output power. In this way, by accurately measuring and calculating the actual power output of the equipment at different preset powers, the gas output can be adjusted specifically to ensure the accurate operation of the equipment at a specific power setting. By calibrating step by step, first focusing on two power output points of the equipment, by adjusting the control current of the gas proportional valve, the power deviation can be effectively eliminated, realizing the power calibration of the equipment under extreme working conditions, and then ensuring the operation accuracy in the intermediate power section, improving the overall control accuracy and energy utilization efficiency of the equipment.

[0058] In one embodiment, the first preset power is the maximum output power of the heating device, and the second preset power is the minimum output power of the heating device. In this way, selecting the maximum and minimum output powers as calibration points can ensure that the device can achieve the preset power control target within the full power range. This method is particularly applicable to power calibration when the device is first installed or when significant changes occur in external conditions. By first calibrating the power output under extreme conditions and then adjusting the intermediate power segments as needed, the basic data of the device's power output can be quickly established, the device commissioning process can be accelerated, and the efficiency and experience of users during initial use or environmental adaptation can be improved. To facilitate the adjustment of system parameter settings for the maximum output power condition and the minimum output power condition, the device is provided with forced modes for both the maximum output power condition and the minimum output power condition, which are generally entered by the commissioning personnel through a combination key method and can also be opened for user use. For example, when the device enters the forced mode for the maximum output power condition, the device will always operate at the maximum power condition (maximum fire combustion).

[0059] In one embodiment, the method for adjusting the gas output of the gas passage corresponding to the preset power according to the difference between the preset power and the actual output power includes: when the actual output power is less than the preset power, increasing the gas output of the gas passage corresponding to the preset power; when the actual output power is greater than the preset power, decreasing the gas output of the gas passage corresponding to the preset power; when the actual output power is equal to the preset power, keeping the gas output of the gas passage corresponding to the preset power unchanged. In this way, the principle of dynamically adjusting the gas output according to the difference between the actual output power and the preset power is clarified, that is, increasing the gas output when the actual output power is lower than the preset value, decreasing the gas output when it is higher than the preset value, and keeping the gas output unchanged when the two are equal. This method can ensure that the output power of the heating device is consistent with the user's needs or the manufacturer's set target, improving the accuracy of power control and the reliability of device operation. By dynamically adjusting the gas output to calibrate the power, the device is prevented from operating in a power deviation state for a long time, reducing energy waste and also helping to extend the service life of the device.

[0060] Specifically, the method for increasing the gas output of the gas passage corresponding to the preset power is to increase the gas output pressure of the gas passage. In this way, the increase in the gas output pressure directly promotes the increase in the gas flow rate, thereby increasing the combustion intensity and the heat output of the heating device, and further being able to increase the actual output power to reduce the deviation from the preset power.

[0061] Specifically, a proportional valve is provided on the gas passage. The method for increasing the gas output of the gas passage corresponding to the preset power is to increase the input current of the proportional valve. In this way, by using the proportional valve as the control element on the gas passage and adjusting the magnitude of its input current, the opening degree of the proportional valve can be accurately controlled, thereby controlling the gas output. This method not only achieves linear control of the gas output but also ensures the smoothness and continuity of the control process, avoiding the impact on the equipment and combustion process caused by sudden gas flow changes. In addition, compared with the traditional mechanical adjustment method, the adjustment of the input current by electronic control has higher accuracy and stability, which can effectively reduce the error accumulation in the power control process and ensure stable power output of the equipment during long-term operation.

[0062] Specifically, the method for reducing the gas output of the gas passage corresponding to the preset power is to reduce the gas output pressure of the gas passage. In this way, the reduction of the gas output pressure directly promotes the reduction of the gas flow rate, thereby reducing the combustion intensity and the heat output of the heating equipment, and further being able to reduce the actual output power to reduce the deviation from the preset power.

[0063] Specifically, a proportional valve is provided on the gas passage. The method for reducing the gas output of the gas passage corresponding to the preset power is to reduce the input current of the proportional valve. In this way, by using the proportional valve as the control element on the gas passage and reducing the magnitude of its input current, the opening degree of the proportional valve can be accurately reduced, thereby reducing the gas output and further reducing the actual output power to reduce the deviation from the preset power.

[0064] Specifically, the method for keeping the gas output of the gas passage corresponding to the preset power unchanged is to keep the gas output pressure of the gas passage unchanged. In this way, since the current actual output power is consistent with the preset power, keeping the gas output pressure makes the magnitude of the gas flow rate remain unchanged, avoiding unnecessary adjustments.

[0065] Specifically, a proportional valve is provided on the gas passage. The method for keeping the gas output of the gas passage corresponding to the preset power unchanged is to keep the input current of the proportional valve unchanged. In this way, since the current actual output power is consistent with the preset power, keeping the input current of the proportional valve makes the magnitude of the gas flow rate remain unchanged, avoiding unnecessary adjustments.

[0066] Specifically, to prevent damage to the equipment or components caused by excessive adjustment, the range of the input current parameter of the proportional valve is 0 - 350 mA.

[0067] In one embodiment, before obtaining the temperature and flow rate of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path, the power calibration method further includes: continuously obtaining the current temperature of the heating medium at the liquid outlet within a preset duration, and determining whether the heat supply device is in a stable liquid outlet state based on the current temperatures of the heating medium at the liquid outlet obtained within the preset duration. With such a setting, before obtaining the inlet and outlet temperature and flow rate data of the heating flow path, first determine whether the temperature of the heating medium at the liquid outlet is stable, which is to ensure the accuracy of power calculation. If the medium temperature is unstable, the calculated heat transfer amount and power output will also fluctuate, affecting the accuracy of power calibration. By monitoring the temperature of the liquid outlet within the preset duration, stable data can be effectively screened out, thereby ensuring the reliability and effectiveness of subsequent power calculation. This step is crucial for improving the accuracy of power calibration, avoiding misjudgment caused by temperature fluctuations, and ensuring that the device is based on a real and stable state when performing power adjustment.

[0068] Specifically, the method for determining whether the heat supply device is in a stable liquid outlet state based on the current temperatures of the heating medium at the liquid outlet obtained within the preset duration includes: when the maximum difference between the current temperatures of the heating medium at the liquid outlet obtained within the preset duration is less than or equal to the preset stable temperature difference, it is determined that the heat supply device is in a stable liquid outlet state; when the maximum difference between the current temperatures of the heating medium at the liquid outlet obtained within the preset duration is greater than the preset stable temperature difference, it is determined that the heat supply device is not in a stable liquid outlet state, and the heat supply device continues to operate at the preset power. In this way, by setting an appropriate temperature difference threshold (preset stable temperature difference), it is possible to quickly identify whether the liquid outlet temperature has reached a stable state, thereby determining whether power output measurement can be started. This method avoids the process of waiting for the temperature to be completely stable for a long time, improves the efficiency of power calibration, and ensures the quality of power calibration. In practical applications, this judgment method based on the temperature difference threshold can balance the speed and accuracy of power calibration. If it is detected that the temperature of the heating medium at the liquid outlet has not reached a stable state, the device will automatically adjust and continue to operate at the preset power until the temperature is stable. Through the continuous operation of the device itself, the temperature of the heating medium can be naturally made stable, thereby ensuring that each power calibration is based on the actual operating conditions of the device, improving the reliability and repeatability of power calibration.

[0069] It should be noted that in this specific embodiment, the prerequisite for obtaining the inlet flow rate, outlet temperature, and inlet temperature is that the heat supply device is in a stable liquid outlet state.

[0070] Specifically, the preset duration is greater than or equal to 8 s and less than or equal to 15 s. In this way, a sufficient time window is provided to determine whether the outlet temperature of the heating flow path has reached a stable state.

[0071] In a specific embodiment, the preset duration is 10 s. With such a setting, it not only ensures the full display of the temperature change trend but also avoids unnecessary long waiting times, improving the efficiency of power calibration. In addition, an appropriate preset duration helps to reduce misjudgments caused by the unstable state at the initial stage of equipment startup, ensuring that the equipment is in a stable operating state when power measurement and adjustment are carried out, thereby improving the accuracy and reliability of power calibration.

[0072] Specifically, the preset stable temperature difference is greater than or equal to 0 °C and less than or equal to 1 °C. In this way, it is convenient to improve the accuracy of the detection result of the subsequent liquid outlet temperature. The reasonable selection of the preset stable temperature difference helps to balance the accuracy and efficiency in the power calibration process, avoiding the extension of the calibration time caused by too high accuracy requirements and preventing the unreliable calibration results caused by too low accuracy requirements.

[0073] In a specific embodiment, the preset stable temperature difference is 1 °C. With such a setting, it means that within the preset duration, if the temperature fluctuation range at the liquid outlet does not exceed 1 °C, the equipment is considered to be in a stable liquid outlet state. This setting not only considers the temperature fluctuations in the actual heating process but also ensures that the power calibration is carried out within a small temperature change range, thereby improving the accuracy of power measurement.

[0074] In an embodiment, before the heating equipment operates at the preset power, the power calibration method further includes: continuously obtaining the current environmental parameters of the environment where the heating equipment is located, and the current environmental parameters include any one or more of temperature, humidity, and atmospheric pressure; judging whether to perform power calibration on the output power of the heating equipment according to the magnitude of the difference between the corresponding current environmental parameters obtained twice before and after. Among them, the method of judging whether to perform power calibration on the output power of the heating equipment according to the magnitude of the difference between the corresponding current environmental parameters obtained twice before and after includes: when the difference between the corresponding current environmental parameters obtained twice before and after is greater than the corresponding preset change difference, it is determined that power calibration is required, and the heating equipment enters the power calibration state; when the difference between the corresponding current environmental parameters obtained twice before and after is less than or equal to the corresponding preset change difference, it is determined that power calibration is not required, and the heating equipment maintains its current working state.

[0075] Since the changes in environmental parameters (such as temperature and atmospheric pressure) will directly affect the actual power output of the heating equipment, this method can intelligently adjust the power output of the equipment according to environmental changes, ensuring that the equipment can operate at the most appropriate power under various environments, thereby improving energy utilization efficiency. In cold regions or high-altitude regions, the equipment can automatically increase the power to compensate for the impact brought by environmental changes; while in mild climates, the power output can be reduced to avoid energy waste, realizing the intelligence and energy conservation of equipment operation. By continuously obtaining the current environmental parameters (including temperature, humidity, and atmospheric pressure) of the environment where the heating equipment is located and monitoring the changes in these parameters, it can be intelligently judged whether power calibration is required. This method takes into account the influence of environmental factors on the output power of the heating equipment, avoids unnecessary power calibration when the environmental conditions are stable, thereby reducing the frequency of power calibration, reducing the interference to equipment operation, and also saving the time and cost of maintenance and debugging. By setting a preset change difference, when the change in environmental parameters exceeds this preset value, the system can automatically identify and start the power calibration program. This calibration start mechanism based on environmental parameter changes ensures that when the environmental conditions change significantly, the heating equipment can timely adjust its output power to adapt to the new operating conditions, improving the adaptability and efficiency of the equipment. In addition, it can also prevent the power calibration from being started when the environmental changes are not obvious, avoiding frequent changes in the operating state of the equipment, which is beneficial to the long-term stable operation of the equipment. This method also reduces the dependence on manual judgment and intervention and improves the automation level of power calibration. This is particularly important for large heating systems or remotely installed equipment, which not only reduces the maintenance cost, but also improves the response speed and operating efficiency of the system, enabling the heating equipment to maintain a good operating state even without unattended operation.

[0076] Specifically, determining whether to perform power calibration on the output power of the heating equipment can also be based on gas pressure, gas composition, flue length, and altitude where the installation location is located, etc. Gas pressure and composition may vary in different regions, which directly affect the combustion efficiency and power output of the equipment. By monitoring these parameters, the equipment can adjust the power according to changes in gas conditions to ensure that the expected heating effect can be achieved at any location, improving the adaptability and flexibility of the equipment. The altitude also affects air density and oxygen content, thereby affecting combustion efficiency. Considering the altitude factor, the equipment can automatically adjust the power in high-altitude areas, overcoming the problem of reduced combustion efficiency in high-altitude environments. The increase in flue length will lead to an increase in the resistance of flue gas flow, affecting combustion efficiency and heat exchange efficiency, and thus indirectly affecting power output. By incorporating flue length into the consideration of power calibration, the equipment can make appropriate power adjustments in the case of a long flue to maintain the best energy conversion efficiency and avoid energy waste. At the same time, the monitoring of gas pressure and composition can ensure that the equipment can optimize the combustion process under various gas supply conditions, further improving energy utilization efficiency.

[0077] It should be noted that the heating equipment entering the power calibration state means that the heating equipment performs power calibration on the output power of the heating equipment according to the power calibration method.

[0078] It should be noted that when the current environmental parameter is any one of temperature, humidity, and atmospheric pressure, the difference between the corresponding current environmental parameters obtained twice is the difference between the current environmental parameters obtained twice, such as temperature difference, humidity difference, or atmospheric pressure difference. When the current environmental parameters are multiple of temperature, humidity, and atmospheric pressure, the difference between the corresponding current environmental parameters obtained twice includes: the difference between the temperatures obtained twice, the difference between the humidities obtained twice, or the difference between the atmospheric pressures obtained twice. For example, when the current environmental parameters are temperature and humidity, the difference between the corresponding current environmental parameters obtained twice includes the difference between the temperatures obtained twice and the difference between the humidities obtained twice.

[0079] In one embodiment, before the heating device operates at a preset power, the power calibration method further includes: obtaining the cumulative operation times of the heating device; when the cumulative operation times are less than the preset times, putting the heating device into a power calibration state; when the cumulative operation times are greater than or equal to the preset times, keeping the heating device in its current working state. With such a setting, by monitoring the cumulative operation times of the heating device to determine whether power calibration is needed, this strategy can ensure that the device performs necessary power calibration during its initial operation or when the operation times are relatively few, so as to correct possible power deviations. Since the power parameters of new devices or devices with relatively few uses may not have been fully verified or optimized on-site, the calibration mechanism based on the operation times can make up for the uncertainty in this stage, ensuring that the device can accurately control the output power in the early stage and provide stable services.

[0080] Specifically, the preset times are 2 times. In this way, by setting a relatively low preset times as the calibration trigger point, the device automatically enters the power calibration state before the cumulative operation reaches this number of times. This preventive maintenance measure can timely identify and solve potential power output problems in the early stage of the device operation, avoiding these problems from accumulating into more serious faults after long-term operation. Through early calibration, the device can reach the expected operation state faster, extend the service life of the device, and improve the stability and efficiency of long-term operation at the same time.

[0081] Such as Figure 2As shown in the figure, in a specific embodiment, the process of the power calibration method includes: 1. The device operates in the hot water mode, so that the detection unit on the hot water flow path of the existing device can be utilized to collect the outlet water temperature, inlet water temperature, and inlet water flow parameters required for calculating the power (equivalent to the outlet liquid temperature, inlet liquid temperature, and inlet liquid flow respectively); 2. Set the device to operate under the maximum power (maximum output power) condition, so as to select the boundary conditions of the maximum power of the device and keep the device operation parameters unchanged, in order to prepare for the next step of detecting the device operation output parameters; 3. Detect the hot water outlet temperature, domestic hot water inlet temperature, and flow data, and calculate the actual power (actual output power); 4. Compare the deviation between the actual output power and the maximum preset power value under the maximum power condition, and automatically adjust the control valve current parameter (the magnitude of the input current of the proportional valve) to reach the maximum preset power value. That is, through the deviation between the obtained actual output power and the maximum preset output power, automatically adjust the control valve current parameter of the device until the actual output power is equivalent to the maximum preset output power. Retain the control valve current parameter at this moment as the maximum preset output power parameter to complete the maximum power calibration of the device; 5. Set the device to operate under the minimum power (minimum output power) condition, so as to select the boundary conditions of the minimum power of the device and keep the device operation parameters unchanged, in order to prepare for the next step of detecting the device operation output parameters; 6. Detect the hot water outlet temperature, domestic hot water inlet temperature, and flow data, and calculate the actual heat load (actual output power); 7. Compare the deviation between the actual output power and the minimum preset power value under the minimum power condition, and automatically adjust the control valve current parameter to reach the minimum preset power value. That is, through the deviation between the obtained actual output power and the minimum preset output power, automatically adjust the control valve current parameter of the device until the actual output power is equivalent to the minimum preset output power. Retain the control valve current parameter at this moment as the minimum preset output power parameter to complete the minimum power calibration of the device; 8. After the power debugging is completed, exit the debugging.

[0082] An embodiment of the present invention provides a power calibration device. The power calibration device is applicable to the power calibration method provided above. The power calibration device includes a control unit, an acquisition unit, and an adjustment unit. The control unit is used to make the heating device operate at a preset power; the acquisition unit is used to acquire the temperature and flow rate of the heating medium at the inlet of the heating flow path and the temperature of the heating medium at the outlet of the heating flow path to obtain the inlet temperature and inlet flow rate at the inlet, and the outlet temperature at the outlet; obtain the actual output power of the heating device according to the inlet temperature, inlet flow rate, and outlet temperature; the adjustment unit is used to adjust the gas output of the gas channel corresponding to the preset power according to the difference between the preset power and the actual output power.

[0083] Using the power calibration device provided by an embodiment of the present invention, by calibrating the actual power output of the heating equipment at a preset power, it is ensured that the output power during the operation of the equipment is consistent with the power value set by the user or preset by the manufacturer. This method can calculate the actual output power by measuring the temperature and flow rate of the heating medium at the inlet and outlet of the heating flow path and using the thermodynamic principle, so as to compare the actual output power with the preset power, and then determine the deviation between the actual output power and the preset power, and thus adjust the actual output power by adjusting the gas output, and further achieve precise control of the power output. Through such a power calibration method, compared with the need for manual adjustment at the actual installation site in the prior art, the complex process of on-site secondary adjustment is avoided, the installation efficiency of the heating equipment is improved, the use effect of the heating equipment is ensured, the user experience is enhanced, and the later maintenance rate is reduced. Therefore, through the power calibration device provided by this embodiment, the problem of low power calibration efficiency of the heating equipment in the prior art can be solved.

[0084] An embodiment of the present invention provides a non-volatile storage medium. The non-volatile storage medium includes a stored program, wherein when the program runs, it controls the device where the non-volatile storage medium is located to execute the above-provided power calibration method.

[0085] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: By specifying that the device operates under specific working conditions, collecting the inlet temperature, outlet temperature, and inlet flow rate parameters after the hot water runs stably, calculating the actual output power according to the heat exchange formula, and adjusting the control valve current parameter according to the deviation of the actual output power to reach the preset power value, the power calibration of the device is achieved. This avoids the complexity and inaccuracy of manual calibration, improves the efficiency and accuracy of power calibration. Eliminates the need for users to manually adjust the power, simplifies the use and maintenance process of the device. The device can be adjusted to the ideal output power under different working conditions, ensuring the consistency of the water temperature response speed and the heating effect, and enhancing user satisfaction and the market competitiveness of the device.

[0086] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0087] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0088] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc., are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0089] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. may be used here to describe the spatial positional relationship of one device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0090] In addition, it should be noted that the use of terms such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present application.

[0091] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A power calibration method for calibrating the output power of a heating device, the heating device having a heating flow path for circulating a heating medium and a gas passage for introducing a combustion medium, characterized in that, The power calibration method includes: Operating the heating device at a preset power; Obtaining the temperature and flow rate of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path to obtain the inlet liquid temperature and inlet liquid flow rate at the inlet, and the outlet liquid temperature at the outlet; obtaining the actual output power of the heating device according to the inlet liquid temperature, inlet liquid flow rate and outlet liquid temperature; Comparing the preset power with the actual output power, and adjusting the gas output of the gas passage corresponding to the preset power according to the difference between the preset power and the actual output power.

2. The power calibration method according to claim 1, wherein The preset power includes a first preset power and a second preset power, and the second preset power is less than the first preset power; The step of operating the heating device at a preset power includes: Operating the heating device at the first preset power and the second preset power in sequence.

3. The power calibration method according to claim 2, wherein, The first preset power is the maximum output power of the heating device, and the second preset power is the minimum output power of the heating device.

4. The power calibration method according to claim 1, wherein Before obtaining the temperature and flow rate of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path, the power calibration method further includes: Continuously obtaining the current temperature of the heating medium at the outlet within a preset time period, and judging whether the heating device is in a stable liquid outlet state according to the current temperatures of the heating medium at the outlet obtained within the preset time period.

5. The power calibration method according to claim 4, wherein The step of judging whether the heating device is in a stable liquid outlet state according to the current temperatures of the heating medium at the outlet obtained within the preset time period includes: When the maximum difference between the current temperatures of the heating medium at the outlet obtained within the preset time period is less than or equal to a preset stable temperature difference, it is determined that the heating device is in the stable liquid outlet state; When the maximum difference between the current temperatures of the heating medium at the outlet obtained within the preset time period is greater than the preset stable temperature difference, it is determined that the heating device is not in the stable liquid outlet state, and the heating device continues to operate at the preset power.

6. The power calibration method according to claim 5, wherein The preset time period is greater than or equal to 8 s and less than or equal to 15 s; and / or, The preset stable temperature difference is greater than or equal to 0 °C and less than or equal to 1 °C.

7. The power calibration method according to claim 1, wherein The step of adjusting the gas output of the gas passage corresponding to the preset power according to the difference between the preset power and the actual output power includes: When the actual output power is less than the preset power, increasing the gas output of the gas passage corresponding to the preset power; When the actual output power is greater than the preset power, decreasing the gas output of the gas passage corresponding to the preset power; When the actual output power is equal to the preset power, keeping the gas output of the gas passage corresponding to the preset power unchanged.

8. The power calibration method according to claim 1, wherein The step of adjusting the gas output of the gas passage corresponding to the preset power includes: adjusting the magnitude of the gas output pressure of the gas passage corresponding to the preset power.

9. The power calibration method according to claim 8, wherein A proportional valve is provided on the gas passage, and adjusting the magnitude of the gas output pressure of the gas passage includes: adjusting the magnitude of the input current of the proportional valve.

10. The power calibration method according to any one of claims 1 to 9, characterized in that, Before making the heating device operate at a preset power, the power calibration method further includes: continuously acquiring current ambient parameters of the environment where the heating device is located, where the current ambient parameters include any one or more of temperature, humidity, and atmospheric pressure; judging whether to perform power calibration on the output power of the heating device according to the magnitude of the difference between the corresponding current ambient parameters acquired twice before and after; wherein, the judging whether to perform power calibration on the output power of the heating device according to the magnitude of the difference between the corresponding current ambient parameters acquired twice before and after includes: When the difference between the corresponding current ambient parameters acquired twice before and after is greater than the corresponding preset change difference, it is determined that power calibration is required, and the heating device enters the power calibration state; When the difference between the corresponding current ambient parameters acquired twice before and after is less than or equal to the corresponding preset change difference, it is determined that power calibration is not required, and the heating device maintains its current working state.

11. The power calibration method according to any one of claims 1 to 9, characterized in that, Before making the heating device operate at a preset power, the power calibration method further includes: acquiring the cumulative operation times of the heating device; when the cumulative operation times are less than the preset times, making the heating device enter the power calibration state; when the cumulative operation times are greater than or equal to the preset times, making the heating device maintain its current working state.

12. A power calibration device, characterized in that, Applicable to the power calibration method according to any one of claims 1 to 11, the power calibration device includes: a control unit for making the heating device operate at a preset power; an acquisition unit for acquiring the temperature and flow rate of the heating medium at the liquid inlet of the heating flow path and the temperature of the heating medium at the liquid outlet of the heating flow path to obtain the inlet liquid temperature and inlet liquid flow rate at the inlet, and the outlet liquid temperature at the outlet; obtaining the actual output power of the heating device according to the inlet liquid temperature, inlet liquid flow rate, and outlet liquid temperature; an adjustment unit for adjusting the gas output of the gas passage corresponding to the preset power according to the difference between the preset power and the actual output power.

13. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein when the program runs, it controls the device where the non-volatile storage medium is located to execute the power calibration method according to any one of claims 1 to 11.

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