Gas heating water heater, heating control method thereof and storage medium

Abstract

The invention discloses a gas heating water heater, a heating control method of the gas heating water heater and a storage medium. The method comprises the steps that the heating water outlet temperature when the gas heating water heater heats water flow is detected; if the heating water outlet temperature is larger than or equal to the upper limit value of the heating temperature interval, under the constraint that the heating target temperature is smaller than the upper limit value of the heating temperature interval, the heating shutdown upper limit temperature is reduced so as to lower the upper limit value of the heating temperature interval; if the heating water outlet temperature is smaller than the upper limit value of the heating temperature interval and larger than the heating target temperature, heating working condition parameters of cooling after heating of the gas heating water heater are counted, and the heat preservation state of the gas heating water heater is detected according to the heating working condition parameters; and if the heating shutdown upper limit temperature is reduced, or the heat preservation state is normal heat preservation, the heating starting lower limit temperature is increased, so that the lower limit value of the heating temperature interval is reduced. And the gas amount of the gas heating water heater can be reduced under the two conditions, so that the energy cost of the gas heating water heater is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-fired heating water heaters, and in particular to a gas-fired heating water heater, a heating control method thereof, and a storage medium. Background Art

[0002] The gas-fired hot water boiler (also known as a wall-mounted heating hot water boiler) introduces gas from the gas inlet, uses a burner to burn the gas, thereby heating the water flowing in from the water inlet, raising the water temperature, and then flows the water into the domestic hot water inlet and the heating outlet through different water outlets to achieve indoor heating.

[0003] The gas heating water boiler will set a default heating target temperature and control the heating water outlet temperature to fluctuate around the heating target temperature. When the heating water outlet temperature is greater than or equal to the upper limit of the allowable fluctuation, the gas heating water boiler will stop burning. When the heating return water temperature is less than or equal to the lower limit of the allowable fluctuation, the gas heating water boiler will restart burning.

[0004] At present, during the heating process, on the one hand, the gas heating water boiler continues to burn (delayed shutdown) after reaching the heating target temperature. At this time, the temperature difference between the high-temperature water and the environment increases, which will lead to additional heat dissipation losses. This "overburning" phenomenon directly increases gas consumption; on the other hand, when the heating return water temperature is less than or equal to the lower limit of the allowable fluctuation, the gas heating water boiler restarts combustion. If the lower limit of the allowable fluctuation is set too large, it will cause the gas heating water boiler to start prematurely (start up early), especially in the long heating process, resulting in significant energy waste. Summary of the Invention

[0005] In view of this, the present invention provides a gas-fired heating water boiler and a heating control method and storage medium thereof, so as to reduce the energy cost of heating by the gas-fired heating water boiler.

[0006] A first aspect of the present invention provides a heating control method for a gas-fired heating water heater, wherein the gas-fired heating water heater is configured with a heating target temperature and a heating temperature range, wherein the upper limit of the heating temperature range is the sum of the heating target temperature and the heating shutdown upper limit temperature, and the lower limit of the heating temperature range is the difference between the heating target temperature and the heating start lower limit temperature; the method comprises:

[0007] Detecting the outlet water temperature of the gas-fired hot water boiler when heating water;

[0008] If the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then, subject to the constraint that the heating target temperature is less than the upper limit of the heating temperature range, the heating shutdown upper limit temperature is reduced to adjust the upper limit of the heating temperature range;

[0009] If the outlet heating water temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water heater after cooling after heating are counted, and the insulation state of the gas heating water heater is detected based on the heating operating condition parameters;

[0010] If the reduction of the heating shutdown upper limit temperature is completed, or the heat preservation state is normal, the heating start lower limit temperature is increased to adjust the lower limit value of the heating temperature range.

[0011] In this embodiment, the heating water outlet temperature when the gas heating water heater heats the water flow is detected; if the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then, under the constraint that the heating target temperature is less than the upper limit of the heating temperature range, the heating shutdown upper limit temperature is reduced to adjust the upper limit of the heating temperature range; if the heating water outlet temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water heater after cooling after heating are calculated, and the insulation state of the gas heating water heater is detected based on the heating operating condition parameters; if the reduction of the heating shutdown upper limit temperature is completed, or the insulation state is normal, the heating start lower limit temperature is increased to adjust the lower limit of the heating temperature range. When the upper limit and / or lower limit of the heating temperature range are limitedly shifted downward, the impact on heating is relatively low, and the heat demand of the building can still be met. If the upper limit of the heating temperature range is lowered, the time the gas heating water heater burns gas will be shortened. If the lower limit of the heating temperature range is lowered, the shutdown time of the gas heating water heater will be extended. Both situations can reduce the amount of gas used by the gas heating water heater, thereby reducing the energy cost of the gas heating water heater.

[0012] A second aspect of the present invention provides a gas-fired heating water heater, wherein the gas-fired heating water heater is configured with a heating target temperature and a heating temperature range, wherein the upper limit of the heating temperature range is the sum of the heating target temperature and the heating shutdown upper limit temperature, and the lower limit of the heating temperature range is the difference between the heating target temperature and the heating startup lower limit temperature; the gas-fired heating water heater includes a first temperature sensor and a controller, wherein the first temperature sensor is disposed at the water outlet pipe of the gas-fired heating water heater;

[0013] The first temperature sensor is used to detect the outlet water temperature of the gas-fired hot water boiler when heating water;

[0014] The controller is used to:

[0015] If the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then, subject to the constraint that the heating target temperature is less than the upper limit of the heating temperature range, the heating shutdown upper limit temperature is reduced to adjust the upper limit of the heating temperature range;

[0016] If the outlet heating water temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water heater after cooling after heating are counted, and the insulation state of the gas heating water heater is detected based on the heating operating condition parameters;

[0017] If the reduction of the heating shutdown upper limit temperature is completed, or the heat preservation state is normal, the heating start lower limit temperature is increased to adjust the lower limit value of the heating temperature range.

[0018] A third aspect of the present invention provides a gas-fired heating water heater, comprising:

[0019] at least one processor; and

[0020] a memory communicatively connected to the at least one processor; wherein,

[0021] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the heating control method of the gas heating water boiler as described in the first aspect above.

[0022] A fourth aspect of the present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the heating control method for a gas-fired heating water boiler as described in the first aspect above.

[0023] A fifth aspect of the present invention provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the heating control method of the gas heating water boiler as described in the first aspect above.

[0024] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0026] Figure 1 This is a flow chart of a heating control method for a gas-fired heating water boiler provided in Example 1 of the present invention.

[0027] Figure 2 This is a flow chart of a heating control method for a gas-fired heating water boiler provided in the second embodiment of the present invention.

[0028] Figure 3 This is a flow chart of a heating control method for a gas-fired heating water boiler provided in Example 3 of the present invention.

[0029] Figure 4 This is a structural diagram of a gas-fired heating water boiler provided in Example 4 of the present invention.

[0030] Figure 5 This is a structural diagram of a gas-fired heating water boiler provided in Example 5 of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can cover sequential implementations other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Example 1

[0034] See also Figure 1 , showing a flow chart of a heating control method for a gas-fired heating water boiler provided in a first embodiment of the present invention. This embodiment is applicable to the case of dynamically lowering the upper limit and / or lower limit of the heating temperature range. The method can be executed by a heating control device of a gas-fired heating water boiler. The heating control device of the gas-fired heating water boiler can be implemented in the form of hardware and / or software. The heating control device of the gas-fired heating water boiler can be configured in a gas-fired heating water boiler.

[0035] The following parameters have been configured in the gas heating water boiler:

[0036] 1. Heating target temperature T1

[0037] The heating target temperature T1 is the temperature that the gas heating water boiler is expected to maintain during heating.

[0038] Generally, a gas heating water boiler can provide a default temperature as the heating target temperature T1, and the user can reset the heating target temperature T1 according to demand.

[0039] 2. Heating temperature range

[0040] Heating by a gas-fired hot water boiler is a dynamic process, which is easily affected by environmental factors and has certain fluctuations. Therefore, the heating temperature range is set as the range of allowable fluctuations of the heating target temperature T1. The heating water outlet temperature T2 of the gas-fired hot water boiler can be considered to meet the heating target temperature T1 within this range.

[0041] The upper limit value of the heating temperature range is the sum of the heating target temperature T1 and the heating shutdown upper limit temperature A (i.e. T1+A), which is the critical temperature for controlling the gas heating water boiler to stop heating the water flow. The lower limit value of the heating temperature range is the difference between the heating target temperature T1 and the heating start lower limit temperature B (i.e. T1-B), which is the critical temperature for controlling the gas heating water boiler to start heating the water flow.

[0042] When the heating outlet water temperature T2 of the gas heating water heater is greater than or equal to the upper limit of the heating temperature range (i.e. T2≥T1+A), the gas heating water heater is controlled to stop combustion and stop heating the water flow, waiting for the heating system in the gas heating water heater to cool down; when the heating return water temperature T3 of the gas heating water heater is less than or equal to the lower limit of the heating temperature range (i.e. T3≤T1-B), the gas heating water heater is controlled to start heating the water flow with the heating target temperature T1 as the target. This is a start-stop cycle (i.e. a complete time period for starting combustion and stopping combustion).

[0043] 3. Burning limit time threshold

[0044] The combustion limit time threshold is the upper limit of the duration of the gas heating water boiler heating water flow (i.e. the time allowed for it to continue burning) after the heating water outlet temperature T2 of the gas heating water boiler is greater than or equal to the heating target temperature T1, which is used to prevent the combustion time from being too long.

[0045] When the outlet water temperature T2 of the gas heating water boiler is greater than the difference between the lower limit temperature B for heating start-up and less than the upper limit value of the heating temperature range (i.e. T1+A>T2>T1), start timing and counting the time it takes for the gas heating water boiler to reach temperature. When the time it takes for the gas heating water boiler to reach temperature exceeds the combustion limit time threshold, control the gas heating water boiler to stop burning and stop heating the water flow, and wait for the heating system in the gas heating water boiler to cool down.

[0046] When the heating return water temperature T3 of the gas heating water heater is less than or equal to the lower limit of the heating temperature range (ie T3≤T1-B), the gas heating water heater is controlled to start heating the water flow with the heating target temperature T1 as the target.

[0047] 4. Operation time exceeding the limit threshold

[0048] The combustion limit time threshold is the maximum time for a gas heating water heater to operate continuously for a single time (including the time based on the heating temperature range and the combustion limit time threshold), such as 23 hours. If the single combustion time of the gas heating water heater exceeds the operation limit time threshold, the gas heating water heater will shut down and wait for re-ignition and restart.

[0049] like Figure 1 As shown, the method includes:

[0050] Step 101: Detect the outlet water temperature of the gas-fired hot water boiler when heating water.

[0051] In this embodiment, a first temperature sensor can be deployed at a location such as the outlet of the water outlet pipe of the gas heating water heater. During the process of the gas heating water heater heating the water flow for heating, the heating water outlet temperature T2 detected in real time by the temperature sensor can be received.

[0052] Step 102: If the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then under the constraint that the heating target temperature is less than the upper limit of the heating temperature range, reduce the heating shutdown upper limit temperature to adjust the upper limit of the heating temperature range.

[0053] If the heating water outlet temperature T2 is greater than the heating target temperature T1 (T2>T1), the gas heating water boiler is automatically controlled to enter the energy-saving mode. If the heating water outlet temperature T2 is lower than the heating target temperature T1 (T2<T1), the gas heating water boiler is automatically controlled to exit the energy-saving mode.

[0054] In energy-saving mode, the upper and / or lower limits of the heating temperature range are dynamically adjusted downward to save energy costs.

[0055] In addition, the user can also actively control the gas heating water boiler to enter the energy-saving mode, which is not limited in this embodiment.

[0056] When the heating target temperature T1 remains unchanged, lowering the upper limit of the heating temperature range is to reduce the heating shutdown upper limit temperature A, and adjusting the lower limit of the heating temperature range is to increase the heating start lower limit temperature B.

[0057] Furthermore, lowering the upper limit of the heating temperature range (reducing the heating shutdown upper limit temperature A) has a higher priority than lowering the lower limit of the heating temperature range (increasing the heating start lower limit temperature B).

[0058] After lowering the upper limit of the heating temperature range (reducing the upper limit temperature A for heating shutdown), two situations may occur. One situation is that combustion can be maintained and the flameout occurs after a certain period of time; the other situation is that the flameout occurs immediately after reaching a certain temperature. When maintaining combustion in a higher temperature range, the gas consumption is greater (the heat dissipation is large, and more combustion time is required). Therefore, after determining the upper limit of the heating temperature range (the upper limit temperature A for heating shutdown), the heating time is mainly related to the lower limit of the heating temperature range (the lower limit temperature B for heating start-up), and a single variable is maintained to improve efficiency and speed up judgment.

[0059] On the contrary, if the upper limit value of the heating temperature range (heating shutdown upper limit temperature A) and the lower limit value of the heating temperature range (heating start lower limit temperature B) are used as variables at the same time, cross-combination verification is usually required, which takes a long time. In addition, adjusting the lower limit value of the heating temperature range (heating start lower limit temperature B) may affect the ambient temperature.

[0060] If the heating water outlet temperature T2 is greater than or equal to the upper limit value of the heating temperature range (T2≥T1+A), it means that the heat energy supply of the gas heating hot water boiler is sufficient. Then, under the constraint that the heating target temperature T2 is less than the upper limit value of the heating temperature range (that is, T2<T1+A is maintained), the heating shutdown upper limit temperature A can be reasonably reduced, thereby lowering the upper limit value of the heating temperature range (T1+A).

[0061] Generally speaking, the external environment will not change significantly in a short period of time. If the upper limit of the heating temperature range (T1+A) is lowered, the gas heating water boiler can be turned off in advance, reducing the combustion time to save gas. In addition, a slight reduction in the heat load can still meet the building's heat demand, especially for small-sized buildings. A high-power gas heating water boiler is selected, and the minimum load of the gas heating water boiler can still meet the building's heat demand.

[0062] For example, if the heating target temperature is 40°C and the heating shutdown upper limit temperature A is 5°C, the gas heating water boiler will be shut down when the heating water outlet temperature is 45°C. If the heating shutdown upper limit temperature A is reduced to 3°C, the gas heating water boiler will be shut down when the heating water outlet temperature is 43°C.

[0063] In one embodiment of the present invention, step 102 may include the following steps:

[0064] Step 1021: Read the first step length and the first adjustment number threshold for the upper temperature limit configuration of the heating shutdown.

[0065] In this embodiment, a suitable first step length S1 (eg, 1° C.) and a first adjustment number threshold H1 (eg, 3 times) may be configured for the heating shutdown upper limit temperature A based on experiments, historical experience, and the like.

[0066] Among them, the product between the first step length S1 and the first adjustment number threshold H1 is less than the initial heating shutdown upper limit temperature A (i.e. S1×H1<A), thereby maintaining the heating target temperature T1 lower than the upper limit value of the heating temperature range (i.e. T1<T1+A-S1×H1).

[0067] Since heat transfer has a certain inertia, this embodiment gradually reduces the heating shutdown upper limit temperature A according to the first step, avoiding a significant drop in ambient temperature caused by a significant reduction in the heating shutdown upper limit temperature A, making the ambient temperature change smooth and maintaining user experience.

[0068] In addition, in the process of reducing the upper limit temperature A of the heating shutdown, a state of thermal equilibrium may exist. For example, the heating target temperature is 40°C, and the upper limit temperature A of the heating shutdown is 5°C. In the process of reducing the upper limit temperature A of the heating shutdown, the heating water outlet temperature T2 of the gas heating hot water boiler is maintained at 42°C and continues to burn.

[0069] Step 1022 , determine whether the number of times the heating shutdown upper limit temperature is reduced reaches a first adjustment threshold; if not, execute step 1023 ; if so, execute step 1025 .

[0070] In this embodiment, a variable may be set, which is initially 0. Each time the heating shutdown upper limit temperature A is reduced, the variable is accumulated by 1, thereby recording the number of times the heating shutdown upper limit temperature A is reduced.

[0071] The number of times the heating stop upper limit temperature is reduced is compared with the first adjustment threshold.

[0072] Step 1023: Update the difference between the current upper limit temperature for heating shutdown and the first step length to the new upper limit temperature for heating shutdown, so as to adjust the upper limit value of the heating temperature range.

[0073] If the number of times the heating shutdown upper limit temperature is reduced does not reach the first adjustment threshold, that is, the number of times the heating shutdown upper limit temperature is reduced is less than the first adjustment threshold, then the current heating shutdown upper limit temperature A is subtracted from the first step length S1, and the difference between the two is set as the new heating shutdown upper limit temperature A (that is, A=A-S1), thereby lowering the upper limit value of the heating temperature range (T1+A).

[0074] Step 1024 , wait for the gas heating water heater to run a start-stop cycle, and return to step 1022 .

[0075] When the upper limit value of the heating temperature range is lowered, wait for the gas heating water heater to run a start-stop cycle, and then lower the upper limit value of the heating temperature range again.

[0076] It should be noted that when the heat supply of the minimum load of the gas heating water boiler far exceeds the heat demand in the building, it may enter the shutdown state prematurely. Due to the overall decrease in heat, the next startup cycle may not overheat. Therefore, when entering the operation of lowering the upper limit of the heating temperature range, the range of the heating water outlet temperature T2 should be judged again. When the heating water outlet temperature T2 is greater than the heating target temperature T1 (T2>T1), the operation of lowering the upper limit of the heating temperature range should be performed again.

[0077] Step 1025, end the reduction of the upper limit temperature of the heating shutdown.

[0078] If the number of times the heating stop upper limit temperature is reduced reaches the first adjustment threshold, that is, the number of times the heating stop upper limit temperature is reduced is equal to the first adjustment threshold, the operation of reducing the heating stop upper limit temperature may be ended.

[0079] Step 103: If the outlet water temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water boiler after cooling after heating are counted.

[0080] When the minimum heat supply of the gas heating water boiler is greater than the overall heat dissipation in the building, there is severe blockage and the heat cannot be dissipated in time, there is hydraulic imbalance, or there is high resistance in a certain section of the pipeline system, the gas heating water boiler's supply heat source is just equal to the overall heat dissipation in the building. The gas heating water boiler can just fluctuate around the heating target temperature, that is, the heating target temperature and the actual heating water outlet temperature are approximately equal, which is an ideal thermal balance state.

[0081] If the heating water outlet temperature T2 is less than the upper limit of the heating temperature range (T1+A) and greater than the heating target temperature T1 (i.e., T1+A>T2>T1), the heating operating condition parameters of the gas heating hot water boiler after heating and cooling in a start-stop operation can be counted.

[0082] Exemplarily, the heating operating condition parameters include the first cooling time, and the time it takes for the gas heating hot water boiler to heat the water flow after the heating outlet water temperature T2 reaches the heating target temperature T1 (ie, T2 = T1) is calculated to obtain the temperature reaching time.

[0083] The time to temperature is compared to the combustion limit time threshold.

[0084] If the time to reach the temperature exceeds (i.e. is greater than or equal to) the combustion limit time threshold, the gas heating water heater is controlled to stop burning and stop heating the water flow, and the time from when the gas heating water heater stops burning and stops heating the water flow to when the heating return water temperature T3 is less than or equal to the lower limit of the heating temperature range (i.e. T3≤T1+B) is restarted to obtain the first cooling time.

[0085] Step 104: Detect the insulation status of the gas heating water boiler according to the heating operating condition parameters.

[0086] In this embodiment, the heating operating parameters can be analyzed using rules, machine learning, etc. to obtain the insulation status of the gas heating water heater and determine whether the gas heating water heater has normal insulation or abnormal insulation.

[0087] For example, if the heating operating condition parameters include a first cooling time, the first cooling time may be compared with a preset cooling time threshold (eg, 20 minutes).

[0088] In one case, if the first cooling time is less than the cooling time threshold, it is determined that the protection state of the gas heating water heater is abnormal insulation.

[0089] In another case, if the first cooling time is greater than or equal to the cooling time threshold, it is determined that the protection state of the gas heating water heater is normal insulation.

[0090] Of course, the above-mentioned heating condition parameters and the method for detecting the heat preservation state of the gas heating water heater are only used as examples. When implementing this embodiment, other heating condition parameters and the method for detecting the heat preservation state of the gas heating water heater can be set according to actual conditions. For example, the cooling rate, the residual / standard deviation of the temperature during cooling, etc. are collected as heating condition parameters, and corresponding thresholds are set for these heating condition parameters to detect the heat preservation state of the gas heating water heater, etc. This embodiment does not limit this. In addition, in addition to the above-mentioned heating condition parameters and the method for detecting the heat preservation state of the gas heating water heater, those skilled in the art can also adopt other heating condition parameters and the method for detecting the heat preservation state of the gas heating water heater according to actual needs, and this embodiment does not limit this.

[0091] Step 105: If the reduction of the upper limit temperature of the heating shutdown is completed, or the insulation state is normal, the lower limit temperature of the heating start is increased to adjust the lower limit value of the heating temperature range.

[0092] If the reduction of the heating shutdown upper limit temperature A is completed (that is, the heating shutdown upper limit temperature A has been reduced to its lower limit value) or the insulation state of the gas heating hot water boiler is normal, the heating start lower limit temperature B can be reasonably increased, thereby lowering the lower limit value of the heating temperature range (T1-B).

[0093] Generally speaking, the external environment will not change significantly in a short period of time. If the lower limit of the heating temperature range (T1-B) is lowered, the flameout time of the gas heating water boiler can be extended.

[0094] For example, the heating target temperature is 40°C, the heating start lower limit temperature B is 10°C, the lower limit value of the heating temperature range is 30°C by default, and the gas heating hot water boiler maintains the heating water outlet temperature at 41°C and burns for a period of time. During this process, the heating start lower limit temperature B increases to 12°C, and the lower limit value of the heating temperature range is lowered to 28°C.

[0095] In actual tests in heating areas, when buildings are well insulated, it takes longer to drop from low temperatures to lower temperatures. In one test, it took 7 minutes for the building to drop from 30°C to 29°C.

[0096] It may take 30 minutes to cool down from 40℃ to 30℃, and it may take 28 minutes or even longer to cool down from 40℃ to 30℃.

[0097] In one embodiment of the present invention, step 105 may include the following steps:

[0098] Step 1051: Read the second step size and the second adjustment number threshold configured for the heating startup lower limit temperature.

[0099] In this embodiment, a suitable second step size S2 (eg, 0.5° C., 1° C., 2° C.) and a second adjustment number threshold H2 may be configured for the heating start lower limit temperature B based on experiments, historical experience, and the like.

[0100] In some designs, the second adjustment number threshold H2 can be set to a larger value in order to find the heating start lower limit temperature B under the optimal heating index value.

[0101] In practical applications, the value range of the heating start lower limit temperature B is [5,15]. Further, the value range of the heating start lower limit temperature B is [8,10].

[0102] Step 1052: If the heating water outlet temperature is greater than the heating target temperature, the sum of the current starting lower limit temperature and the second step length is updated to the new heating starting lower limit temperature, so as to adjust the lower limit value of the heating temperature range.

[0103] In one case, if the heating water outlet temperature T2 is greater than the heating target temperature T1 (i.e., T2>T1), the current starting lower limit temperature B can be added to the second step S2, and the sum of the two can be set as the new heating starting lower limit temperature B (i.e., B=B+S2), thereby lowering the lower limit value of the heating temperature range (T2-B).

[0104] Step 1053: Record the second heating duration and the third cooling duration of the gas heating water heater in a start-stop cycle.

[0105] When the heating start lower limit temperature B is increased, the gas heating water boiler can be controlled to run a start cycle. During this process, its second heating time and third cooling time can be recorded.

[0106] Among them, the second heating time is the time from when the gas heating hot water boiler starts combustion and stops heating water flow to when the heating water outlet temperature T2 reaches the heating target temperature T1 (ie T2 = T1) during the start-stop cycle.

[0107] The third cooling time is the time from when the gas heating hot water boiler stops burning and stops heating the water flow during the start-stop cycle to when the heating return water temperature T3 is less than or equal to the lower limit of the heating temperature range (i.e. T3≤T1+B) and then restarts burning and heating the water.

[0108] Step 1054 , determine whether the number of times the heating start lower limit temperature is increased reaches the second adjustment number threshold; if not, return to step 1052 ; if so, execute step 1055 .

[0109] In this embodiment, a variable may be set, which is initially 0. Each time the heating start lower limit temperature B is increased, the variable is accumulated by 1, thereby recording the number of times the heating start lower limit temperature B is increased.

[0110] The number of times the heating start lower limit temperature is increased is compared with the second adjustment number threshold.

[0111] Step 1055: Generate a heating index value for each heating start lower limit temperature according to the difference between the second heating time and the third cooling time.

[0112] Step 1056: Apply the heating start lower limit temperature with the optimal heating index value.

[0113] A start-stop cycle can be divided into the second heating time, the temperature-reaching time and the third cooling time. In the process of increasing the lower limit temperature B for heating startup, since the combustion limit time threshold is a hyperparameter, the temperature-reaching time is a constant and can be ignored. Therefore, the state that is beneficial to energy saving is that the longer the third cooling time (that is, the longer the flameout time), the shorter the second heating time (that is, the shorter the combustion time).

[0114] In this embodiment, a statistical function can be used to calculate the difference between the second heating time and the third cooling time, and a heating index value can be generated for each heating start-up lower limit temperature based on the difference between the second heating time and the third cooling time to quantify the degree of energy saving for different heating start-up lower limit temperatures B.

[0115] From all heating start lower limit temperatures B, the heating start lower limit temperature B with the best heating index value (ie, the most energy-saving) is selected and put into effect.

[0116] For example, for each heating start lower limit temperature B, the difference between the third cooling time and the second heating time (i.e., the difference between the third cooling time and the second heating time) can be calculated as the heating index value of the heating start lower limit temperature. This operation is simple and effective.

[0117] Accordingly, the heating start lower limit temperature B with the largest heating index value may be screened out from the heating start lower limit temperatures B and made effective, thereby applying the heating start lower limit temperature B with the largest heating index value.

[0118] Of course, the above-described heating index values ​​and their optimal methods are merely examples. When implementing this embodiment, other heating index values ​​and their optimal methods may be set based on actual circumstances. For example, the percentage difference between the third cooling duration and the second heating duration may be calculated as the heating index value, the relative error between the third cooling duration and the second heating duration may be calculated as the heating index value, and so on. This embodiment is not limited in this regard. Furthermore, in addition to the above-described heating index values ​​and their optimal methods, those skilled in the art may also adopt other heating index values ​​and their optimal methods based on actual needs, and this embodiment is not limited in this regard.

[0119] In one embodiment of the present invention, step 105 may further include the following steps:

[0120] Step 1057: If the heating start lower limit temperature with the optimal heating index value or the heating water outlet temperature is equal to the heating target temperature, the combustion limit time threshold is shortened.

[0121] When any of the following conditions is met: the heating start lower limit temperature with the optimal heating index value, and the heating water outlet temperature T2 is equal to the heating target temperature T1 (i.e., T1 = T2), the current combustion limit time threshold is shortened by subtracting a certain step size, adjusting it proportionally, etc.

[0122] Among them, the combustion limit time threshold is the upper limit of the duration of the gas heating water boiler heating water flow after the heating water outlet temperature T2 of the gas heating water boiler is greater than or equal to the heating target temperature T1.

[0123] Step 1058: Determine whether the heating index value after shortening the combustion limit time threshold is better than the heating index value before shortening the combustion limit time threshold; if so, return to step 1057; if not, execute step 1059.

[0124] Step 1059: Apply the combustion limit time threshold.

[0125] When shortening the combustion limit time threshold, wait for the gas heating water heater to run a start-stop cycle, calculate a new heating index value using the same method as step 1055, compare the heating index value after shortening the combustion limit time threshold with the heating index value before shortening the combustion limit time threshold, and determine whether the heating index value after shortening the combustion limit time threshold is better than the heating index value before shortening the combustion limit time threshold.

[0126] Exemplarily, if the heating index value is the difference between the third cooling time and the second heating time, it is determined whether the heating index value after shortening the combustion limit time threshold is greater than the heating index value before shortening the combustion limit time threshold; if so, it is determined that the heating index value after shortening the combustion limit time threshold is better than the heating index value before shortening the combustion limit time threshold; if not, it is determined that the heating index value after shortening the combustion limit time threshold is not better than the heating index value before shortening the combustion limit time threshold.

[0127] When the heating index value after shortening the combustion limit time threshold is better than the heating index value before shortening the combustion limit time threshold, the process returns to step 1057 - step 1058 to continue optimizing the combustion limit time threshold.

[0128] When the heating index value after shortening the combustion limit time threshold is not better than the heating index value before shortening the combustion limit time threshold, the optimization of the combustion limit time threshold is ended, and the gas heating water boiler applies the current combustion limit time threshold or the previous combustion limit time threshold to operate.

[0129] In this embodiment, the heating water outlet temperature when the gas heating water heater heats the water flow is detected; if the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then, under the constraint that the heating target temperature is less than the upper limit of the heating temperature range, the heating shutdown upper limit temperature is reduced to adjust the upper limit of the heating temperature range; if the heating water outlet temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water heater after cooling after heating are calculated, and the insulation state of the gas heating water heater is detected based on the heating operating condition parameters; if the reduction of the heating shutdown upper limit temperature is completed, or the insulation state is normal, the heating start lower limit temperature is increased to adjust the lower limit of the heating temperature range. When the upper limit and / or lower limit of the heating temperature range are limitedly shifted downward, the impact on heating is relatively low, and the heat demand of the building can still be met. If the upper limit of the heating temperature range is lowered, the time the gas heating water heater burns gas will be shortened. If the lower limit of the heating temperature range is lowered, the time the gas heating water heater stops burning gas will be extended. Both situations can reduce the amount of gas used by the gas heating water heater, thereby reducing the energy cost of the gas heating water heater.

[0130] Example 2

[0131] See also Figure 2 , shows a flow chart of a heating control method for a gas-fired hot water boiler provided by the second embodiment of the present invention. This embodiment adds an operation for abnormal insulation on the basis of the previous embodiment. Figure 2 As shown, the method includes:

[0132] Step 201: Detect the outlet water temperature of the gas-fired hot water boiler when heating water.

[0133] Step 202: If the outlet water temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water boiler after cooling after heating are counted.

[0134] Step 203: Detect the insulation status of the gas heating water boiler according to the heating operating condition parameters.

[0135] Step 204: If the insulation state of the gas heating water heater is abnormal, increase the heating target temperature.

[0136] If the insulation state of the gas heating water boiler is abnormal, it will enter the self-check logic. At this time, the heating target temperature T1 can be increased by increasing a certain step size, increasing in proportion, etc.

[0137] Step 205: Detect the heating return water temperature when the gas heating hot water boiler heats the water flow.

[0138] In this embodiment, a second temperature sensor can be deployed at a location such as the water inlet of the return pipe of the gas heating water heater. During the process of the gas heating water heater heating the water flow for heating, the heating return water temperature T3 detected in real time by the second temperature sensor can be received.

[0139] Step 206: Calculate a first change in the heating return water temperature before and after the heating target temperature is increased.

[0140] In this embodiment, the heating return water temperature T3 before the heating target temperature is increased and the heating return water temperature T3 after the heating target temperature is increased are stored at the same time, and the statistical values ​​such as the difference, percentage difference, percentage change, etc. between the heating return water temperature T3 before the heating target temperature is increased and the heating return water temperature T3 after the heating target temperature is increased are calculated as the first change amount.

[0141] Step 207: Calculate a second change in the first heating duration of the gas heating water heater in a start-stop cycle before and after the heating target temperature increases.

[0142] In this embodiment, a start-stop cycle can be run before and after the heating target temperature increases, and the first heating time is recorded in the start-stop cycle respectively, wherein the first heating time is the time from when the gas heating hot water boiler starts to heat the water flow to when the heating outlet water temperature reaches the heating target temperature.

[0143] Based on this, statistical values ​​such as the difference, percentage difference, percentage change, etc. between the first heating time before the heating target temperature is increased and the first heating time after the heating target temperature is increased are calculated as the second change amount.

[0144] Step 208: Calculate a third change in the second cooling time of the gas heating water heater in a start-stop cycle before and after the heating target temperature increases.

[0145] In this embodiment, a start-stop cycle can be run before and after the heating target temperature increases, and the second cooling time is recorded in the start-stop cycle respectively, wherein the second cooling time is the time from when the gas heating hot water boiler stops burning and stops heating the water flow to when the heating return water temperature T3 is less than or equal to the lower limit of the heating temperature range (i.e., T3≤T1+B) during the start-stop cycle and the combustion and heating of the water body are restarted.

[0146] Based on this, statistical values ​​such as the difference, percentage difference, and percentage change between the second cooling time before the heating target temperature is increased and the second cooling time after the heating target temperature is increased are calculated as the third change amount.

[0147] Step 209: If at least one of the conditions of the first variation being within the preset first variation range, the second variation being within the preset second variation range, and the third variation being within the preset third variation range is satisfied, an alarm operation is performed on the insulation abnormality of the gas heating water heater.

[0148] If the first change is within the preset first change range, it means that the heating return water temperature changes little and the heat dissipation speed is too fast. There may be problems such as water leakage, abnormal position of the gas heating hot water boiler, thermal imbalance, etc.

[0149] If the second change amount is within the preset second change range, it means that the first heating time duration changes slightly, and after adjusting the heating target temperature, the first heating time duration is expected to become longer.

[0150] If the third change amount is within the preset third change range, it means that the second cooling time duration changes slightly, and after adjusting the heating target temperature, the second cooling time duration is expected to become longer.

[0151] Therefore, if at least one of the conditions that the first change amount is in the first change range, the second change amount is in the second change range, and the third change amount is in the third change range is met, it can be determined that there is an abnormality in the gas heating water heater, and an alarm operation is performed on the insulation abnormality of the gas heating water heater, prompting the user to inspect the gas heating water heater.

[0152] When the present embodiment preliminarily detects that the insulation state of the gas heating water heater is abnormal, the heating target temperature is increased and its changes in the heating return water temperature, heating time, cooling time, etc. are tested to achieve further comprehensive detection, effectively improve the accuracy of judging insulation abnormalities, improve the maintenance efficiency of the gas heating water heater, and enhance the safety and reliability of the gas heating water heater.

[0153] Example 3

[0154] See also Figure 3 , shows a flow chart of a heating control method of a gas-fired hot water boiler provided by the third embodiment of the present invention. This embodiment adds a special operation of recording on the basis of the previous embodiment. Figure 3 As shown, the method includes:

[0155] Step 301: Detect the outlet water temperature of the gas-fired hot water boiler when heating water.

[0156] Step 302: If the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then under the constraint that the heating target temperature is less than the upper limit of the heating temperature range, reduce the heating shutdown upper limit temperature to adjust the upper limit of the heating temperature range.

[0157] Step 303: If the outlet water temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water boiler after cooling after heating are counted.

[0158] Step 304: Detect the insulation status of the gas heating water heater according to the heating operating condition parameters.

[0159] Step 305: If the reduction of the upper limit temperature of the heating shutdown is completed, or the insulation state is normal, the lower limit temperature of the heating start is increased to adjust the lower limit value of the heating temperature range.

[0160] Step 306: Identify characteristic information of heating provided by a gas-fired hot water boiler.

[0161] If the adjustment of the heating shutdown upper limit temperature A and the heating start lower limit temperature B is completed, and the gas heating water boiler provides stable heating, the characteristic information of the gas heating water boiler's heating can be identified if the user authorizes the sharing of the heating settings.

[0162] Exemplarily, the characteristic information includes at least one of the climate information of the environment in which the gas heating water boiler is located (such as geographical location, time, outdoor temperature, etc.), the apartment type information of the building in which the gas heating water boiler is located (such as area, apartment type, etc.), and the heating target temperature T1.

[0163] Step 307: Record the mapping relationship between the characteristic information and the heating temperature range and the combustion limit time threshold of the gas heating water heater.

[0164] In this embodiment, the mapping relationship between the characteristic information and the heating temperature range and the combustion limit time threshold of the gas heating water boiler can be recorded, and the mapping relationship can be shared with the gas heating water boilers of other users. The gas heating water boilers of other users apply the heating temperature range and the combustion limit time threshold of the gas heating water boiler mapped with the most similar characteristic information.

[0165] In this way, other gas heating water boilers can apply the optimal heating temperature range and the combustion limit time threshold of the gas heating water boiler under historical similar feature information when adjusting the heating temperature range. With unified parameter configuration at the factory, the flexibility in facing different usage scenarios is improved, the waste gas generated in the process of adjusting the heating temperature range is reduced, and energy is further saved.

[0166] Example 4

[0167] See also Figure 4 , shows a schematic structural diagram of a gas-fired hot water boiler provided by the fourth embodiment of the present invention. Figure 4As shown, the gas heating water heater 400 is configured with a heating target temperature and a heating temperature range. The upper limit of the heating temperature range is the sum of the heating target temperature and the heating shutdown upper limit temperature, and the lower limit of the heating temperature range is the difference between the heating target temperature and the heating start lower limit temperature. The gas heating water heater 400 includes a first temperature sensor 410 and a controller 420. The first temperature sensor 410 is provided at the water outlet pipe 401 of the gas heating water heater 400.

[0168] The first temperature sensor 410 is used to detect the outlet water temperature of the gas-fired hot water boiler when heating water;

[0169] The controller 420 is configured to:

[0170] If the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then, subject to the constraint that the heating target temperature is less than the upper limit of the heating temperature range, the heating shutdown upper limit temperature is reduced to adjust the upper limit of the heating temperature range;

[0171] If the outlet heating water temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water heater after cooling after heating are counted, and the insulation state of the gas heating water heater is detected based on the heating operating condition parameters;

[0172] If the reduction of the heating shutdown upper limit temperature is completed, or the heat preservation state is normal, the heating start lower limit temperature is increased to adjust the lower limit value of the heating temperature range.

[0173] In one embodiment of the present invention, the controller 420 is further configured to:

[0174] Reading the first step length and the first adjustment number threshold configured for the heating shutdown upper limit temperature; the product of the first step length and the first adjustment number threshold is less than the initial heating shutdown upper limit temperature;

[0175] determining whether the number of times the heating shutdown upper limit temperature is reduced reaches the first adjustment threshold;

[0176] If not, the difference between the current upper limit temperature of the heating shutdown and the first step is updated as the new upper limit temperature of the heating shutdown, so as to adjust the upper limit value of the heating temperature range, wait for the gas heating water heater to run for a start-stop cycle, and return to the execution of the determination of whether the number of times the upper limit temperature of the heating shutdown is reduced reaches the first adjustment threshold;

[0177] If so, then the step of reducing the heating shutdown upper limit temperature ends.

[0178] In one embodiment of the present invention, the controller 420 is further configured to:

[0179] Counting the time the gas heating water boiler continues to heat the water flow after the heating water outlet temperature reaches the heating target temperature, to obtain the temperature reaching time;

[0180] If the time to reach the temperature exceeds the combustion limit time threshold, the gas heating water heater is controlled to stop heating the water flow, and the first cooling time between the gas heating water heater stopping heating the water flow and restarting heating the water body is recorded;

[0181] The controller 420 is further configured to:

[0182] If the first cooling time is less than the cooling time threshold, determining that the protection state of the gas heating water heater is abnormal insulation;

[0183] If the first cooling time is greater than or equal to the cooling time threshold, it is determined that the protection state of the gas heating water heater is normal insulation.

[0184] In one embodiment of the present invention, the gas heating water heater 400 further includes a second temperature sensor 430 , which is disposed at the return pipe 402 of the gas heating water heater 400 ;

[0185] The second temperature sensor 430 is used to detect the heating return water temperature when the gas heating water boiler heats the water flow;

[0186] The controller 420 is further configured to:

[0187] If the insulation state of the gas heating water heater is abnormal, increasing the heating target temperature;

[0188] Calculating a first change in the heating return water temperature before and after the heating target temperature is increased;

[0189] Calculate a second change in the first heating duration of the gas-fired hot water heater in a start-stop cycle before and after the heating target temperature increases; the first heating duration is the time from when the gas-fired hot water heater starts heating water flow to when the heating outlet water temperature reaches the heating target temperature;

[0190] Calculating a third change in the second cooling time of the gas heating water heater in a start-stop cycle before and after the heating target temperature increases;

[0191] If at least one of the conditions that the first change amount is within the preset first change range, the second change amount is within the preset second change range, and the third change amount is within the preset third change range is met, an alarm operation is performed on the insulation abnormality of the gas heating water boiler.

[0192] In one embodiment of the present invention, the controller 420 is further configured to:

[0193] Reading a second step length and a second adjustment number threshold configured for the heating start lower limit temperature;

[0194] If the heating water outlet temperature is greater than the heating target temperature, the sum of the current starting lower limit temperature and the second step length is updated as the new heating starting lower limit temperature, thereby adjusting the lower limit value of the heating temperature range;

[0195] Record the second heating time and the third cooling time of the gas heating water heater in a start-stop cycle; the second heating time is the time from when the gas heating water heater starts heating water flow to when the heating water outlet temperature reaches the heating target temperature;

[0196] Determine whether the number of times the heating start lower limit temperature is increased reaches the second adjustment number threshold; if not, return to executing the step of updating the sum of the current start lower limit temperature and the second step length as the new heating start lower limit temperature to adjust the lower limit value of the heating temperature range; if so, generate a heating index value for each heating start lower limit temperature based on the difference between the second heating time and the third cooling time;

[0197] The heating start lower limit temperature at which the heating index value is optimal is applied.

[0198] In one embodiment of the present invention, the controller 420 is further configured to:

[0199] For each of the heating start lower limit temperatures, calculating a difference between the third cooling time and the second heating time as a heating index value for the heating start lower limit temperature;

[0200] The controller 420 is further configured to:

[0201] The heating start lower limit temperature having the largest heating index value is applied.

[0202] In one embodiment of the present invention, the controller 420 is further configured to:

[0203] If the heating start lower limit temperature with the optimal heating index value is applied or the heating water outlet temperature is equal to the heating target temperature, the combustion limit time threshold is shortened; the combustion limit time threshold is the upper limit of the duration of the water flow heated by the gas heating water boiler after the heating water outlet temperature is greater than or equal to the heating target temperature;

[0204] determining whether the heating index value after shortening the combustion restriction time threshold is better than the heating index value before shortening the combustion restriction time threshold;

[0205] If so, the method returns to execute the combustion limit time threshold; if not, the method applies the combustion limit time threshold.

[0206] In one embodiment of the present invention, the controller 420 is further configured to:

[0207] Identifying characteristic information of the gas heating water heater; the characteristic information includes at least one of climate information of the environment in which the gas heating water heater is located, apartment type information of the building in which the gas heating water heater is located, and a heating target temperature;

[0208] Record the mapping relationship between the characteristic information and the heating temperature range and the combustion limit time threshold of the gas heating water heater.

[0209] The gas heating water heater provided in the embodiment of the present invention can execute the heating control method of the gas heating water heater provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the heating control method of the gas heating water heater.

[0210] Example 5

[0211] See also Figure 5 , which shows a schematic structural diagram of a gas-fired hot water heater provided by an embodiment of the present invention. The components, their connections and relationships, and their functions shown herein are merely examples and are not intended to limit the implementation of the invention described and / or claimed herein.

[0212] like Figure 5 As shown, the gas heating water heater 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 and a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the read-only memory (ROM) 12 or loaded from the storage unit 18 into the random access memory (RAM) 13. The RAM 13 can also store various programs and data required for the operation of the gas heating water heater 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0213] Multiple components in the gas heating water heater 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, optical disk, etc.; and a communication unit 19, such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the gas heating water heater 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0214] The processor 11 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the heating control method for a gas-fired heating water boiler.

[0215] In some embodiments, the heating control method for a gas-fired hot water heater can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the gas-fired hot water heater 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the heating control method for a gas-fired hot water heater described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to execute the heating control method for a gas-fired hot water heater in any other appropriate manner (e.g., by means of firmware).

[0216] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0217] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0218] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0219] To provide interaction with a user, the systems and techniques described herein can be implemented on a gas heating water heater having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the gas heating water heater. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0220] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0221] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0222] Example 6

[0223] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the heating control method of the gas heating water boiler provided in any embodiment of the present invention.

[0224] The computer program product may be implemented by writing computer program code for performing the operations of the present invention in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0225] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0226] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A heating control method for a gas-fired hot water boiler, characterized in that: The gas heating water heater is configured with a heating target temperature and a heating temperature range, the upper limit of the heating temperature range is the sum of the heating target temperature and the heating shutdown upper limit temperature, and the lower limit of the heating temperature range is the difference between the heating target temperature and the heating start lower limit temperature; the method includes: Detecting the outlet water temperature of the gas-fired hot water boiler when heating water; If the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then, subject to the constraint that the heating target temperature is less than the upper limit of the heating temperature range, the heating shutdown upper limit temperature is reduced to adjust the upper limit of the heating temperature range; If the outlet heating water temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water heater after cooling after heating are counted, and the insulation state of the gas heating water heater is detected based on the heating operating condition parameters; If the reduction of the heating shutdown upper limit temperature is completed, or the heat preservation state is normal, the heating start lower limit temperature is increased to adjust the lower limit value of the heating temperature range.

2. The method according to claim 1, characterized in that The step of reducing the heating shutdown upper limit temperature to adjust the upper limit of the heating temperature range under the constraint that the heating target temperature is less than the upper limit of the heating temperature range includes: Reading the first step length and the first adjustment number threshold configured for the heating shutdown upper limit temperature; the product of the first step length and the first adjustment number threshold is less than the initial heating shutdown upper limit temperature; determining whether the number of times the heating shutdown upper limit temperature is reduced reaches the first adjustment threshold; If not, the difference between the current upper limit temperature of the heating shutdown and the first step is updated as the new upper limit temperature of the heating shutdown, so as to adjust the upper limit value of the heating temperature range, wait for the gas heating water heater to run for a start-stop cycle, and return to the execution of the determination of whether the number of times the upper limit temperature of the heating shutdown is reduced reaches the first adjustment threshold; If so, then the step of reducing the heating shutdown upper limit temperature ends.

3. The method according to claim 1, characterized in that The statistics of heating operating parameters of the gas-fired hot water boiler during cooling after heating include: Counting the time the gas heating water boiler continues to heat the water flow after the heating water outlet temperature reaches the heating target temperature, to obtain the temperature reaching time; If the time to reach the temperature exceeds the combustion limit time threshold, the gas heating water heater is controlled to stop heating the water flow, and the first cooling time between the gas heating water heater stopping heating the water flow and restarting heating the water body is recorded; The method of detecting the heat preservation state of the gas heating water boiler according to the heating working condition parameters includes: If the first cooling time is less than the cooling time threshold, determining that the protection state of the gas heating water heater is abnormal insulation; If the first cooling time is greater than or equal to the cooling time threshold, it is determined that the protection state of the gas heating water heater is normal insulation.

4. The method according to claim 1, wherein Also includes: If the insulation state of the gas heating water heater is abnormal, increasing the heating target temperature; Detecting the heating return water temperature when the gas heating hot water boiler heats the water flow; Calculating a first change in the heating return water temperature before and after the heating target temperature is increased; Calculate a second change in the first heating duration of the gas-fired hot water heater in a start-stop cycle before and after the heating target temperature increases; the first heating duration is the time from when the gas-fired hot water heater starts heating water flow to when the heating outlet water temperature reaches the heating target temperature; Calculating a third change in the second cooling time of the gas heating water heater in a start-stop cycle before and after the heating target temperature increases; If at least one of the conditions that the first change amount is within the preset first change range, the second change amount is within the preset second change range, and the third change amount is within the preset third change range is met, an alarm operation is performed on the insulation abnormality of the gas heating water boiler.

5. The method according to claim 1, wherein Increasing the heating start lower limit temperature to adjust the lower limit value of the heating temperature range includes: Reading a second step length and a second adjustment number threshold configured for the heating start lower limit temperature; If the heating water outlet temperature is greater than the heating target temperature, the sum of the current starting lower limit temperature and the second step length is updated as the new heating starting lower limit temperature, thereby adjusting the lower limit value of the heating temperature range; Record the second heating time and the third cooling time of the gas heating water heater in a start-stop cycle; the second heating time is the time from when the gas heating water heater starts heating water flow to when the heating water outlet temperature reaches the heating target temperature; Determine whether the number of times the heating start lower limit temperature is increased reaches the second adjustment number threshold; if not, return to executing the step of updating the sum of the current start lower limit temperature and the second step length as the new heating start lower limit temperature to adjust the lower limit value of the heating temperature range; if so, generate a heating index value for each heating start lower limit temperature based on the difference between the second heating time and the third cooling time; The heating start lower limit temperature at which the heating index value is optimal is applied.

6. The method according to claim 5, characterized in that Generating a heating index value for each of the heating start lower limit temperatures according to the difference between the second heating time and the third cooling time includes: For each of the heating start lower limit temperatures, calculating a difference between the third cooling time and the second heating time as a heating index value for the heating start lower limit temperature; The heating start lower limit temperature for applying the optimal heating index value includes: The heating start lower limit temperature having the largest heating index value is applied.

7. The method according to claim 5, characterized in that The step of increasing the heating start lower limit temperature to lower the lower limit of the heating temperature range further includes: If the heating start lower limit temperature with the optimal heating index value is applied or the heating water outlet temperature is equal to the heating target temperature, the combustion limit time threshold is shortened; the combustion limit time threshold is the upper limit of the duration of the water flow heated by the gas heating water boiler after the heating water outlet temperature is greater than or equal to the heating target temperature; determining whether the heating index value after shortening the combustion restriction time threshold is better than the heating index value before shortening the combustion restriction time threshold; If so, the method returns to execute the combustion limit time threshold; if not, the method applies the combustion limit time threshold.

8. The method according to any one of claims 1 to 7, characterized in that Also includes: Identifying characteristic information of the gas heating water heater; the characteristic information includes at least one of climate information of the environment in which the gas heating water heater is located, apartment type information of the building in which the gas heating water heater is located, and a heating target temperature; Record the mapping relationship between the characteristic information and the heating temperature range and the combustion limit time threshold of the gas heating water heater.

9. A gas-fired hot water boiler, characterized in that: The gas heating water heater is configured with a heating target temperature and a heating temperature range, wherein the upper limit of the heating temperature range is the sum of the heating target temperature and the upper limit temperature for heating shutdown, and the lower limit of the heating temperature range is the difference between the heating target temperature and the lower limit temperature for heating startup; the gas heating water heater includes a first temperature sensor and a controller, wherein the first temperature sensor is arranged at the water outlet pipe of the gas heating water heater; The first temperature sensor is used to detect the outlet water temperature of the gas-fired hot water boiler when heating water; The controller is used to: If the heating water outlet temperature is greater than or equal to the upper limit of the heating temperature range, then, subject to the constraint that the heating target temperature is less than the upper limit of the heating temperature range, the heating shutdown upper limit temperature is reduced to adjust the upper limit of the heating temperature range; If the outlet heating water temperature is less than the upper limit of the heating temperature range and greater than the heating target temperature, the heating operating condition parameters of the gas heating water heater after cooling after heating are counted, and the insulation state of the gas heating water heater is detected based on the heating operating condition parameters; If the reduction of the heating shutdown upper limit temperature is completed, or the heat preservation state is normal, the heating start lower limit temperature is increased to adjust the lower limit value of the heating temperature range.

10. A gas-fired hot water boiler, characterized in that: The gas heating water boiler comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the heating control method of the gas heating water boiler according to any one of claims 1 to 8.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the heating control method of the gas heating water boiler according to any one of claims 1 to 8 is implemented.

12. A computer program product, characterized in that The computer program product includes a computer program, and when the computer program is executed by a processor, the heating control method of the gas heating water boiler according to any one of claims 1 to 8 is implemented.

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