Gas water heater, control method thereof and computer readable storage medium

Abstract

The application relates to the technical field of gas water heaters, and discloses a gas water heater, a control method thereof and a computer readable storage medium. The control method comprises the following steps: obtaining a first demand load according to a first demand temperature; controlling a corresponding sectional valve in the gas water heater to work according to the first demand load; wherein the sectional valve has a first section working mode and a second section working mode; in response to the first demand load reaching a current switching point of the sectional valve, the sectional valve is controlled to switch from a current section working mode to another section working mode; the working load corresponding to the current switching point does not reach the working load corresponding to a default switching point of the sectional valve in the current section working mode, and the working load corresponding to the current switching point is located in a load overlapping interval of the second section working mode and the first section working mode. Through the above mode, the gas water heater can reduce the phenomenon of slow sectional switching, and improve the water use experience of users.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas water heaters, in particular to a gas water heater, a control method thereof and a computer readable storage medium. BACKGROUND

[0002] A gas water heater is a key device for ensuring hot water supply in modern families, and its core value lies in providing users with fast, stable and comfortable constant temperature hot water experience. However, in actual application, many gas water heaters have the problem of "slow cut segmentation" due to the limitation of control strategy, that is, in the process of reaching the set temperature, the system is slow to adjust and the segmentation is improper, resulting in long constant temperature waiting time, water temperature fluctuation and other phenomena, which seriously affects the bathing comfort of users. SUMMARY

[0003] The gas water heater and the control method thereof and the computer readable storage medium provided by the present application can reduce the phenomenon of slow cut segmentation of the gas water heater and improve the water use experience of users.

[0004] In a first aspect, the present application provides a control method of a gas water heater, the control method comprising: obtaining a first demand load according to a first demand temperature; controlling a corresponding segmented valve in the gas water heater to work according to the first demand load; wherein the segmented valve has a first segment working mode and a second segment working mode; the maximum working load corresponding to the first segment working mode is located between the minimum working load and the maximum working load of the second segment working mode, and the minimum working load corresponding to the second segment working mode is located between the minimum working load and the maximum working load of the first segment working mode; in response to the first demand load reaching a current switching point of the segmented valve, controlling the segmented valve to switch from a current segment working mode to another segment working mode; wherein the current segment working mode is the first segment working mode or the second segment working mode; the working load corresponding to the current switching point does not reach the working load corresponding to a default switching point of the segmented valve in the current segment working mode, and the working load corresponding to the current switching point is located in a load overlapping interval of the second segment working mode and the first segment working mode.

[0005] The current switching point is determined in advance in the following manner: obtaining a second demand load according to a second demand temperature; controlling the corresponding segmented valve in the gas water heater to work according to the second demand load; in response to the second demand load reaching a load overlapping interval of the segmented valve and maintaining for a preset time length, controlling the segmented valve to switch from the current segment working mode to another segment working mode; the load overlapping interval is located between a first working load of the default switching point in the second segment working mode and a second working load corresponding to the default switching point in the first segment working mode; and determining the current switching point according to the second demand load.

[0006] The current switching point is determined according to the second demand load, including: taking the second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the first segment working mode, reducing a preset load from the second demand load, and taking the reduced second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the first segment working mode, reducing a preset load from the second demand load, and taking the reduced second demand load as the working load corresponding to the current switching point; and determining the current switching point in the second segment working mode according to the current switching point in the first segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

[0007] The current switching point is determined according to the second demand load, including: taking the second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the second segment working mode, increasing a preset load from the second demand load, and taking the increased second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the second segment working mode, increasing a preset load from the second demand load, and taking the increased second demand load as the working load corresponding to the current switching point; and determining the current switching point in the first segment working mode according to the current switching point in the second segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

[0008] The current switching point is determined in advance in the following manner: within a first preset time period, the third demand load corresponding to a plurality of third demand temperatures is counted; and the current switching point is determined from the plurality of third demand loads.

[0009] The current switching point is determined from the plurality of third demand loads, including: performing probability calculation according to the plurality of third demand loads to obtain a target demand load; wherein the target demand load is a third demand load with the highest switching probability in the plurality of third demand loads; and taking the target demand load as the working load corresponding to the current switching point.

[0010] In response to the first demand load reaching the current switching point of the segment valve and the actual temperature corresponding to the first demand load not reaching the first demand temperature, after the segment valve is switched from the current segment working mode to another segment working mode, the method further includes: counting the number of demand loads that do not reach the current switching point during a plurality of gas water heater use processes; scoring the current switching point according to the number; in response to the score being less than a preset threshold, the current switching point is re-determined; and in response to the score being greater than or equal to the preset threshold, the current switching point is maintained.

[0011] The load overlap interval between the current switching point of the segmented valve in the second segment working mode and the current switching point of the segmented valve in the first segment working mode is greater than or equal to the preset overlap interval.

[0012] In a second aspect, the present application provides a gas water heater, comprising: a segmented valve; a processor connected to the segmented valve; a memory connected to the processor and configured to store a computer program; and the processor is configured to execute the computer program to implement the method provided in the first aspect.

[0013] In a third aspect, the present application provides a computer readable storage medium configured to store a computer program, and the computer program is configured to implement the method provided in the first aspect when executed by a processor.

[0014] The beneficial effects of the embodiments of the present application are: different from the prior art, the gas water heater and the control method thereof and the computer readable storage medium provided by the present application set the current switching point on the premise that the first segment working mode and the second segment working mode of the segmented valve have a default switching point, the working load corresponding to the current switching point is in the load overlap interval of the second segment working mode and the first segment working mode, when the first demand load reaches the current switching point of the segmented valve, the segmented valve is directly controlled to switch from the current segment working mode to another segment working mode, without the need to wait for a preset time interval after entering the load overlap interval, and then control the segmented valve to switch from the current segment working mode to another segment working mode as in the related art, which can reduce the slow segmenting phenomenon of the gas water heater and improve the user's water experience. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. Among them:

[0016] Figure 1 is a flowchart of the first embodiment of the control method of the gas water heater provided by the present application;

[0017] Figure 2 is a schematic diagram of the first segment working mode and the second segment working mode of the segmented valve provided by the present application;

[0018] Figure 3 is a flowchart of the second embodiment of the control method of the gas water heater provided by the present application;

[0019] Figure 4 is a schematic diagram of the current switching point of the segmented valve in the first segment working mode provided by the present application.

[0020] Figure 5 is a schematic diagram of another embodiment of the current switching point in the first segment working mode of the segmented valve provided in the present application;

[0021] Figure 6 is a schematic diagram of an embodiment of the current switching point in the first segment working mode and the second segment working mode of the segmented valve provided in the present application;

[0022] Figure 7 is a schematic diagram of an embodiment of the current switching point in the second segment working mode of the segmented valve provided in the present application;

[0023] Figure 8 is a schematic diagram of another embodiment of the current switching point in the second segment working mode of the segmented valve provided in the present application;

[0024] Figure 9 is a schematic diagram of another embodiment of the current switching point in the first segment working mode and the second segment working mode of the segmented valve provided in the present application;

[0025] Figure 10 is a flowchart of a third embodiment of the control method of the gas water heater provided in the present application;

[0026] Figure 11 is Figure 10 a flowchart of an embodiment of step 11 in the method;

[0027] Figure 12 is a flowchart of a fourth embodiment of the control method of the gas water heater provided in the present application;

[0028] Figure 13 is a structural schematic diagram of an embodiment of the gas water heater provided in the present application;

[0029] Figure 14 is a structural schematic diagram of an embodiment of the computer readable storage medium provided in the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only parts related to the present application are shown in the drawings, but not all structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment. The appearances of the phrase“in one embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0032] Gas water heaters are the key equipment to ensure hot water supply in modern families. The core value is to provide users with fast, stable and comfortable constant temperature hot water experience. However, in actual application, many gas water heaters have the problem of“slow cut segmentation” due to the limitation of control strategy. That is, in the process of reaching the set temperature, the system adjustment is slow and the segmentation is improper, resulting in long constant temperature waiting time, water temperature fluctuation and other phenomena, which seriously affects the bathing comfort of users. In-depth analysis shows that the root cause of the“slow cut segmentation” problem lies in the fact that the actual operating characteristics of each gas water heater have significant individual differences and time-varying nature. These differences are caused by multiple links:

[0033] Production and manufacturing links: the manufacturing tolerances of parts (such as gas valves, fans, etc.), installation errors in the whole machine assembly process, and the roughness of manual debugging on the production line make the initial state of each water heater different when it leaves the factory.

[0034] Installation environment factors: the complex installation conditions in the user's home, especially the length and bending of the exhaust pipe, directly affect the combustion conditions and exhaust back pressure of the water heater, changing its operating characteristics.

[0035] Long-term use attenuation: With the passage of time, key components such as fire row nozzles and heat exchangers may be clogged by carbon deposits due to gas impurities or incomplete combustion, resulting in attenuating changes in gas flow and thermal efficiency. However, the current mainstream control strategy for gas water heaters mostly uses fixed research and development parameters. These parameters are written into the program after the product design is finalized and cannot be modified or adaptively adjusted according to actual working conditions after leaving the factory. This "one-size-fits-all" static control logic cannot effectively address individual differences and performance attenuation that occur throughout the entire life cycle from production, installation to long-term use. When the actual state of the machine deviates from the preset ideal model, the original control algorithm cannot accurately regulate the load, resulting in deterioration of the constant temperature performance. Therefore, in order to fundamentally solve the problem of poor constant temperature effect and improve the adaptability and user satisfaction of the product, it is imperative to develop a segmented load optimization strategy for gas water heaters that can dynamically perceive and autonomously optimize. The purpose of this research is to develop an intelligent control algorithm that can assess the current operating state of the water heater in real time, dynamically adjust the power switching logic and gas supply to compensate for performance deviations caused by factors such as manufacturing, installation and aging, and ensure rapid and accurate constant temperature control under various complex conditions.

[0036] Based on this, the gas water heater and its control method, and the computer readable storage medium provided by the present application set the current switching point under the premise that the first segment working mode and the second segment working mode of the segmented valve have a default switching point. The working load corresponding to the current switching point is in the load overlap interval of the second segment working mode and the first segment working mode. When the first demand load reaches the current switching point of the segmented valve, the segmented valve is directly controlled to switch from the current segment working mode to another segment working mode. Unlike related art, which requires waiting for a preset time interval before switching from the current segment working mode to another segment working mode after entering the load overlap interval, this method can reduce the phenomenon of slow segment switching for the gas water heater and improve the user's water experience. For specific technical solutions, refer to any of the following embodiments.

[0037] Referring to Figure 1 , Figure 1 is a flowchart of the control method of the gas water heater provided by the present application. The control method comprises:

[0038] Step 11: Obtain the first demand load according to the first demand temperature.

[0039] In some embodiments, the first demand temperature can be set by the user.

[0040] In some embodiments, the first demand temperature can be set by the user in advance.

[0041] In some embodiments, the demand load is the theoretical load of the gas water heater to reach the demand temperature.

[0042] Step 12: Control the corresponding segment valve in the gas water heater to work according to the first demand load.

[0043] In some embodiments, the segmented valve has a first operating mode and a second operating mode. The maximum operating load corresponding to the first operating mode is located between the minimum operating load and the maximum operating load of the second operating mode, and the minimum operating load corresponding to the second operating mode is located between the minimum operating load and the maximum operating load of the first operating mode.

[0044] In some embodiments, the first operating mode of the segmented valve can be the first stage of combustion. The second operating mode of the segmented valve can be the second stage of combustion.

[0045] In some embodiments, taking the opening and closing of a single segmented valve as an example, when closed, the combustion of the continuously lit burner is called the first stage of combustion (first stage operating mode), and when open, the combustion of all burners is called the second stage of combustion (second stage operating mode). Figure 2 As shown, in the initial state, the load range is ABCD, where A is the minimum load of the first stage, B is the maximum load of the first stage, C is the minimum load of the second stage, and D is the maximum load of the second stage. Originally, when the load is greater than B, the second stage combustion should begin, and the sectional valve should open. Then, when the load is lower than C, the first stage combustion should begin, and the pilot light should be turned off. However, considering the consistency deviation in machine manufacturing, Bx is generally set as the upper sectional point (default switching point), and C+y is set as the lower sectional point (default switching point). This ensures that different machines can achieve the purpose of quick sectional switching after production. That is, AB corresponds to the first stage operating mode of the sectional valve, and CD corresponds to the second stage operating mode of the sectional valve. In related technologies, there are two main ways to switch the sectional valve from the first stage operating mode to the second stage operating mode:

[0046] The first method, where the load exceeds the load corresponding to Bx, directly switches from the first working mode to the second working mode. This method can be defined as fast segmentation.

[0047] The second scenario is that the load does not exceed the load corresponding to Bx, but the load is located between C+y and Bx (load overlap interval), and the system switches from the first operating mode to the second operating mode.

[0048] Step 13: In response to the first demand load reaching the current switching point of the segment valve, control the segment valve to switch from the current segment operating mode to another segment operating mode.

[0049] In some embodiments, the current segment working mode is the first segment working mode or the second segment working mode. For example, when the current segment working mode is the first segment working mode, the other segment working mode is the second segment working mode. For example, when the current segment working mode is the second segment working mode, the other segment working mode is the first segment working mode.

[0050] In some embodiments, the working load corresponding to the current switching point does not reach the working load corresponding to the default switching point of the segment valve in the current segment working mode, and the working load corresponding to the current switching point is in the load overlapping interval of the second segment working mode and the first segment working mode.

[0051] In some embodiments, the current switching point is set in addition to the default switching point, and the current switching point is set before the default switching point. For example, when the first segment working mode, the current switching point of the first segment working mode is set before the default switching point of the first segment working mode. That is, the working load corresponding to the current switching point of the first segment working mode is less than the working load corresponding to the default switching point of the first segment working mode.

[0052] In some embodiments, when the first demand load is in the load overlapping interval, it indicates that the actual temperature corresponding to the first demand load does not reach the first demand temperature, but because the current segment working mode does not support the actual temperature to reach the first demand temperature, the working mode needs to be switched to make the segment valve enter another working mode to increase the working load. Based on this, the current switching point is set in the load overlapping interval, and when the first demand load reaches the current switching point, the segment valve is controlled to switch from the current segment working mode to another segment working mode.

[0053] In this embodiment, the current switching point is set on the premise that the first segment working mode and the second segment working mode of the segment valve have default switching points, the working load corresponding to the current switching point is in the load overlapping interval of the second segment working mode and the first segment working mode, and when the first demand load reaches the current switching point of the segment valve, the segment valve is directly controlled to switch from the current segment working mode to another segment working mode. Unlike the related art, which requires waiting for a preset time interval after entering the load overlapping interval before controlling the segment valve to switch from the current segment working mode to another segment working mode, this can reduce the slow switching of the segment in the gas water heater and improve the user's water experience.

[0054] Referring to Figure 3 , Figure 3 is a flowchart of the second embodiment of the control method of the gas water heater provided by the present application. The current switching point is determined in the following way:

[0055] Step 31: Obtain the second demand load according to the second demand temperature.

[0056] In some embodiments, the second demand temperature can be the same demand temperature as the first demand temperature described above.

[0057] In some embodiments, the second demand temperature can be different from the first demand temperature described above.

[0058] Step 32: Control the corresponding segmented valve in the gas water heater according to the second demand load.

[0059] Step 33: In response to the second demand load reaching the load overlapping interval of the segmented valve, and the actual temperature corresponding to the second demand load not reaching the second demand temperature within the preset time length, control the segmented valve to switch from the current segment working mode to another segment working mode.

[0060] In some embodiments, the load overlapping interval is between the first working load corresponding to the default switching point in the second segment working mode and the second working load corresponding to the default switching point in the first segment working mode.

[0061] Step 34: Determine the current switching point according to the second demand load.

[0062] In some embodiments, step 34 can be the following process: taking the second demand load as the working load corresponding to the current switching point.

[0063] In some embodiments, in combination with Figure 4 Explain:

[0064] As shown in Figure 4 , in the initial state, the load range is ABCD, where A is the minimum load of the first segment, B is the maximum load of the first segment; C is the minimum load of the second segment, and D is the maximum load of the second segment. Originally, when the load is greater than B, enter the second segment combustion and open the segmented valve. When the load is lower than C, enter the first segment combustion and close the long-lasting fire. However, considering the consistency deviation of machine production and manufacturing, B-x is generally set as the upper cutting segmented point (default switching point), and C+y is set as the lower cutting segmented point (default switching point).

[0065] The current segment working mode is the first segment working mode, and the second demand load is at point E. At this time, E can be taken as the current switching point.

[0066] In some embodiments, step 34 can be the following process: in response to the current segment working mode being the first segment working mode, reducing the second demand load by a preset load, and taking the reduced second demand load as the working load corresponding to the current switching point.

[0067] In some embodiments, in combination with Figure 5 Explain:

[0068] As shown in Figure 5As shown, in the initial state, the load range is ABCD, where A is the minimum load of the first stage, B is the maximum load of the first stage, C is the minimum load of the second stage, and D is the maximum load of the second stage. Originally, when the load is greater than B, the second stage combustion should begin, and the sectional valve should open. Then, when the load is lower than C, the first stage combustion should begin, and the pilot light should be turned off. However, considering the consistency deviation in machine manufacturing, Bx is generally set as the upper cut-off point (default switching point), and C+y is set as the lower cut-off point (default switching point).

[0069] The current operating mode is the first operating mode. The second demand load is at point E. The preset load is reduced from the second demand load, that is, point E is shifted to the left to obtain point F. Point F can be used as the current switching point.

[0070] In some embodiments, step 34 may be the following process: in response to the current segment working mode being the first segment working mode, reducing the preset load from the second demand load, and using the reduced second demand load as the working load corresponding to the current switching point, and determining the current switching point in the second segment working mode based on the current switching point in the first segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

[0071] In some embodiments, combined with Figure 6 Explanation:

[0072] like Figure 6 As shown, in the initial state, the load range is ABCD, where A is the minimum load of the first stage, B is the maximum load of the first stage, C is the minimum load of the second stage, and D is the maximum load of the second stage. Originally, when the load is greater than B, the second stage combustion should begin, and the sectional valve should open. Then, when the load is lower than C, the first stage combustion should begin, and the pilot light should be turned off. However, considering the consistency deviation in machine manufacturing, Bx is generally set as the upper cut-off point (default switching point), and C+y is set as the lower cut-off point (default switching point).

[0073] The current operating mode is the first operating mode. The second demand load is at point E. The preset load is reduced from the second demand load, that is, point E is shifted to the left to obtain point F. Point F can be used as the current switching point in the first operating mode.

[0074] Based on this, the cut-off segment point can be shifted to the left of point E to obtain point G. Point G can then be used as the current switching point in the second segment working mode.

[0075] In some embodiments, step 24 may be the following process: taking the second demand load as the workload corresponding to the current switching point.

[0076] In some embodiments, combined withFigure 7 Explanation:

[0077] like Figure 7 As shown, in the initial state, the load range is ABCD, where A is the minimum load of the first stage, B is the maximum load of the first stage, C is the minimum load of the second stage, and D is the maximum load of the second stage. Originally, when the load is greater than B, the second stage combustion should begin, and the sectional valve should open. Then, when the load is lower than C, the first stage combustion should begin, and the pilot light should be turned off. However, considering the consistency deviation in machine manufacturing, Bx is generally set as the upper cut-off point (default switching point), and C+y is set as the lower cut-off point (default switching point).

[0078] The current working mode is the second working mode, and the second demand load is at point H. At this time, point H can be used as the current switching point.

[0079] In some embodiments, step 24 may be the following process: in response to the current segment working mode being the second segment working mode, a preset load is added from the second demand load, and the added second demand load is used as the working load corresponding to the current switching point.

[0080] In some embodiments, combined with Figure 8 Explanation:

[0081] like Figure 8 As shown, in the initial state, the load range is ABCD, where A is the minimum load of the first stage, B is the maximum load of the first stage, C is the minimum load of the second stage, and D is the maximum load of the second stage. Originally, when the load is greater than B, the second stage combustion should begin, and the sectional valve should open. Then, when the load is lower than C, the first stage combustion should begin, and the pilot light should be turned off. However, considering the consistency deviation in machine manufacturing, Bx is generally set as the upper cut-off point (default switching point), and C+y is set as the lower cut-off point (default switching point).

[0082] The current operating mode is the second operating mode. The second demand load is at point H. A preset load is added from the second demand load, that is, point H is shifted to the right to obtain point I. Point I can be used as the current switching point.

[0083] In some embodiments, step 24 may be the following process: in response to the current segment working mode being the second segment working mode, adding a preset load from the second demand load, and using the added second demand load as the working load corresponding to the current switching point; and determining the current switching point in the first segment working mode based on the current switching point in the second segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

[0084] In some embodiments, combined with Figure 9 Explanation:

[0085] As Figure 9 shown, in the initial state, the load range is ABCD, wherein A is the minimum load of the first section, B is the maximum load of the first section; C is the minimum load of the second section, and D is the maximum load of the second section. Originally, when the load is greater than B, the second section combustion is entered, and the segmented valve is opened. When the load is lower than C, the first section combustion is entered, and the long-lasting fire is closed. However, considering the consistency deviation of machine production and manufacturing, B-x is generally set as the upper cut segmentation point (the default switching point), and C+y is set as the lower cut segmentation point (the default switching point).

[0086] The current section working mode is the second section working mode, the second demand load is at the H point, the preset load is added from the second demand load, that is, the H point is moved to the right to obtain the I point. The I point can be taken as the current switching point.

[0087] Based on this, the upper cut segmentation point can be obtained in the manner that the H point is moved to the right to obtain the J point. The J point can be taken as the current switching point in the first section working mode.

[0088] In the above manner, the new switching point can be determined again in the load overlapping interval of the segmented valve. In this way, when the new switching point is reached in the subsequent work, the working mode switching of the segmented valve can be directly performed without waiting, so that the heating stability and the hot water temperature stability are improved.

[0089] Referring to Figure 10 , Figure 10 is a flowchart of a control method of a gas water heater provided in the present application. The current switching point is determined in the following manner:

[0090] Step 101: In a first preset time length, a plurality of third demand loads corresponding to a third demand temperature are counted.

[0091] In some embodiments, the third demand temperature can be the same demand temperature as the first demand temperature described above.

[0092] In some embodiments, the third demand temperature can be different from the first demand temperature described above.

[0093] In some embodiments, the first preset time length can be set according to actual needs. For example, 1 hour, 2 hours, 3 hours, 6 hours, 12 hours, 24 hours, 36 hours or 48 hours, and the like.

[0094] Step 102: A current switching point is determined from the plurality of third demand loads.

[0095] In some embodiments, because there are a plurality of third demand loads, the corresponding segmented valve in the gas water heater can be controlled according to each third demand load.

[0096] In some implementations, referring to Figure 11 , step 102 can be the following flow:

[0097] Step 111: According to the plurality of third demand loads, a probability calculation is performed to obtain a target demand load.

[0098] The target demand load is the third demand load with the highest switching probability among the plurality of third demand loads.

[0099] The demand load usually needs to be calculated according to the actual situation of the gas water heater. Therefore, for the same demand temperature, the corresponding demand load may differ each time, such as being the same or different. Based on this, the probability of each demand load can be counted, and the demand load with the highest probability can be taken as the target demand load.

[0100] In some embodiments, for example, 10 times of using the gas water heater within a preset time period. The corresponding demand temperatures of the 10 times are the same. In other embodiments, they can be different. For example, the corresponding demand loads of the 10 times are a1, a2, a3, a4, a1, a1, a1, a5, a2, and a1, respectively. Among them, a1 has the highest probability of occurrence, so a1 can be taken as the target demand load.

[0101] Step 112: Taking the target demand load as the working load corresponding to the current switching point.

[0102] In some embodiments, if the target demand load corresponds to the first section of the working mode at this time, the target demand load can be reduced by a preset load, and the reduced load can be taken as the working load corresponding to the current switching point.

[0103] In some embodiments, if the target demand load corresponds to the second section of the working mode at this time, the target demand load can be increased by a preset load, and the increased load can be taken as the working load corresponding to the current switching point.

[0104] In some embodiments, the single setting of the current switching point can have accuracy problems, so some basic algorithms can be used for processing. The significant method is the scoring mechanism + probability formula calculation. After multiple slow cutting segments appear, or according to the single setting of the current switching point described above, but the slow cutting segment problem still appears afterwards, then the basic learning algorithm can be used to score each switching action in the subsequent use. For example, after using the current switching point, it is found that the number of slow cutting segments is significantly reduced, and the score changes in the good direction. If the score is poor, it will be rolled back and the default switching point will be used. The purpose of the intelligent learning algorithm is also to reduce the probability of slow cutting again. Even if the values of multiple learning are not executed, the record can be calculated by the probability formula to select a best new learning point (current switching point) to improve reliability. In this way, it can also be more in line with the fluctuations of the gas water heater in actual use, dynamically adjust the current switching point, and reduce the number of slow cutting segments.

[0105] Referring to Figure 12 , Figure 12 is a flowchart of a fourth embodiment of a control method of a gas water heater provided by the present application. The control method comprises:

[0106] Step 121: obtaining a first demand load according to a first demand temperature.

[0107] Step 122: controlling the corresponding segmented valve in the gas water heater according to the first demand load.

[0108] The segmented valve has a first segment working mode and a second segment working mode; the maximum working load corresponding to the first segment working mode is located between the minimum working load and the maximum working load of the second segment working mode, and the minimum working load corresponding to the second segment working mode is located between the minimum working load and the maximum working load of the first segment working mode.

[0109] Step 123: in response to the first demand load reaching the current switching point of the segmented valve, controlling the segmented valve to switch from the current segment working mode to another segment working mode.

[0110] The current segment working mode is the first segment working mode or the second segment working mode; the working load corresponding to the current switching point does not reach the working load corresponding to the default switching point of the segmented valve in the current segment working mode, and the working load corresponding to the current switching point is located in the load overlapping interval of the second segment working mode and the first segment working mode.

[0111] Step 124: in the process of using the gas water heater multiple times, the number of demand loads that do not reach the current switching point is counted.

[0112] In some embodiments, if the current switching point is not reached, it is equivalent to still using the slow cutting segment logic at this time.

[0113] Step 125: Score according to the number of times for the current switching point.

[0114] Based on this, the number of times can be scored. For example, the more the number of times, the lower the score. The fewer the number of times, the higher the score.

[0115] The more the number of times, the more the slow segmentation logic is used, which means that the current switching point is not suitable for the current situation of the gas water heater, and the switching point needs to be adjusted.

[0116] Step 126: In response to the score being less than the preset threshold, the current switching point is re-determined.

[0117] The score less than the preset threshold indicates that the slow segmentation logic is used more, which means that the current switching point is not suitable for the current situation of the gas water heater, and the switching point needs to be adjusted. Then the current switching point is re-determined in the above manner.

[0118] Step 127: In response to the score being greater than or equal to the preset threshold, the current switching point is maintained.

[0119] The score greater than or equal to the preset threshold indicates that the slow segmentation logic is used less, which means that the current switching point is suitable for the current situation of the gas water heater, and the current switching point can be maintained.

[0120] In some embodiments, the load overlap interval between the current switching point of the segmented valve in the second segment working mode and the current switching point of the segmented valve in the first segment working mode is greater than or equal to a preset overlap interval. The preset overlap interval needs to meet the national standard requirements or enterprise standard requirements.

[0121] In an application scenario, a detailed description is as follows:

[0122] First, a brief description of the segmented gas water heater: Common gas water heaters generally have 13L specifications, 16L specifications, and 20L specifications. Different specifications correspond to different powers. Generally, the same size, the greater the power, the better. Affected by high temperatures in summer, the water temperature in some southern regions is very high, and the water pressure in old communities is low, resulting in a risk of scalding people even if the gas water heater is at the minimum load. Affected by low temperatures in winter and high pressure water supply in new communities, the largest load is needed to heat cold water in winter. Therefore, for a gas water heater, both super-low load and super-high load need to be pursued. In order to meet this use requirement, the gas water heater adopts segmented combustion to realize 2-3 rows of fire combustion in small segments and 14-17 rows or even more rows of fire combustion in large segments, so as to achieve both the lowest fire and the highest fire. However, this brings the problem of segmented switching.

[0123] Secondly, gas water heater burns between different fire rows, and there is a switching action between each other. For example, when small load is required, part of the segmented valve needs to be closed. When large load is required, more segmented valves need to be opened. Therefore, switching relationship between different segmented valves occurs. In order to quickly switch, generally, quick switching is carried out according to the size of load, but due to the above problems, fixed load switching cannot adapt to all scenarios. Therefore, slow cutting of segmented valves still occurs in different user homes.

[0124] The logic is as follows: after starting heating, the required load is calculated, and then the corresponding segmented combustion stage (corresponding to the different segment working modes described above) is entered. Then it is judged whether the constant temperature stable state is entered, if yes, it is judged whether it belongs to excess power. If it belongs to excess power, the state is switched (slow cutting downward), from the second combustion to the first combustion. If it does not belong to excess power, it is judged whether it is power insufficient, if it is power insufficient, the state is switched (slow cutting upward), from the first combustion to the second combustion. If it is not power insufficient, it is ended. If it is not entered into the constant temperature stable state, it is normally worked.

[0125] Secondly, the slow cutting working condition is explained: when the above various problems occur, which cause that the fixed load switching cannot adapt to all scenarios, slow cutting segmentation will occur. The specific process of slow cutting segmentation is as follows:

[0126] This case takes a segmented valve as an example for introduction, and the principles of two, three or more segmented valves are consistent. A segmented valve of a normal machine can control two segmented combustion intervals, and a certain hysteresis interval is generally reserved considering the production deviation of different machines, for example Figure 2 The load intervals of the segmented valves are shown as

A, B

C, D

[0127] Generally, x, y hysteresis intervals are designed to match as many machines as possible. However, due to manufacturing process and cost constraints, the overlapping area between B and C will not be designed to be large, so the machine used by the user is still easy to appear segmented load slow cutting, which leads to the occurrence of poor experience. The occurrence is as follows:

[0128] When the gas water heater is used in the actual user's home and is subjected to the situation described in the background, the load generated by the combustion of B-x below deviates, and since the same load of the experimental gas water heater has not been reached at this time, the temperature cannot be stably maintained at the user's set demand temperature while staying in the first segment combustion, so the designer creates a slow cutting segmentation design to avoid long-term constant temperature. After a certain period of time, the second combustion is entered (this phenomenon can be defined as slow cutting).

[0129] Based on this, the present application proposes that when a slow cut segment occurs, the actual load at the slow cut point is recorded and compared with the theoretical load, and dynamic changes are made according to a learning algorithm. Among them, it is possible to consider recording multiple sets of slow cut segment point (switching point) record values for training learning, or to use a general translation method to achieve it. Among them, C+y1 and B-x1 need to meet a certain interval range, which is usually the range required by the national standard or the enterprise standard.

[0130] Reference Figure 13 , Figure 13 is a structural schematic diagram of an embodiment of the gas water heater provided by the present application. The gas water heater 100 comprises: a segmented valve 10; a processor 20 connected to the segmented valve 10; a memory 30 connected to the processor 20, used for storing a computer program; and the processor 20 is used for executing the computer program to realize the following method:

[0131] According to the first demand temperature, a first demand load is obtained; the segmented valve in the gas water heater is controlled to work according to the first demand load; wherein the segmented valve has a first segment working mode and a second segment working mode; the maximum working load corresponding to the first segment working mode is located between the minimum working load and the maximum working load of the second segment working mode, and the minimum working load corresponding to the second segment working mode is located between the minimum working load and the maximum working load of the first segment working mode; in response to the first demand load reaching the current switching point of the segmented valve, and the actual temperature corresponding to the first demand load not reaching the first demand temperature, the segmented valve is controlled to switch from the current segment working mode to another segment working mode; wherein the current segment working mode is the first segment working mode or the second segment working mode; the working load corresponding to the current switching point does not reach the working load corresponding to the default switching point of the segmented valve in the current segment working mode, and the working load corresponding to the current switching point is located in the load overlapping interval of the second segment working mode and the first segment working mode.

[0132] In some embodiments, the processor 20 is further used for executing the computer program to realize the following method: the current switching point is determined in advance in the following way: according to the second demand temperature, a second demand load is obtained; the segmented valve in the gas water heater is controlled to work according to the second demand load; in response to the second demand load reaching the load overlapping interval of the segmented valve, and the actual temperature corresponding to the second demand load not reaching the second demand temperature within a preset time length, the segmented valve is controlled to switch from the current segment working mode to another segment working mode; the load overlapping interval is located between the first working load of the default switching point in the second segment working mode and the second working load corresponding to the default switching point in the first segment working mode; and the current switching point is determined according to the second demand load.

[0133] In some embodiments, the processor 20 is further configured to execute the computer program to implement the following method: taking the second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the first segment working mode, reducing a preset load from the second demand load, and taking the reduced second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the first segment working mode, reducing a preset load from the second demand load, and taking the reduced second demand load as the working load corresponding to the current switching point, and determining the current switching point in the second segment working mode according to the current switching point in the first segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

[0134] In some embodiments, the processor 20 is further configured to execute the computer program to implement the following method: taking the second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the second segment working mode, increasing a preset load from the second demand load, and taking the increased second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the second segment working mode, increasing a preset load from the second demand load, and taking the increased second demand load as the working load corresponding to the current switching point; and determining the current switching point in the first segment working mode according to the current switching point in the second segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

[0135] In some embodiments, the processor 20 is further configured to execute the computer program to implement the following method: the current switching point is determined in advance in the following manner: within a first preset time period, a third demand load corresponding to a plurality of third demand temperatures is counted; and the current switching point is determined from the plurality of third demand loads.

[0136] In some embodiments, the processor 20 is further configured to execute the computer program to implement the following method: performing probability calculation according to the plurality of third demand loads to obtain a target demand load; wherein the target demand load is a third demand load with the highest switching probability in the plurality of third demand loads; and taking the target demand load as the working load corresponding to the current switching point.

[0137] In some embodiments, in response to the first demand load reaching the current switching point of the segmented valve and the actual temperature corresponding to the first demand load not reaching the first demand temperature, after the control of the segmented valve switching from the current segment working mode to another segment working mode, the processor 20 is further configured to execute the computer program to implement the following method: counting the number of demand loads that do not reach the current switching point during multiple uses of the gas water heater; scoring the current switching point according to the number; in response to the score being less than a preset threshold, re-determining the current switching point; and in response to the score being greater than or equal to the preset threshold, maintaining the current switching point.

[0138] In some embodiments, the processor 20 is further configured to execute the computer program to implement the following method: the load overlap interval between the current switching point of the segmented valve in the second segment working mode and the current switching point of the segmented valve in the first segment working mode is greater than or equal to a preset overlap interval.

[0139] In some embodiments, the processor 20 is further configured to execute the computer program to implement the method of any of the embodiments of the present application.

[0140] Referring to Figure 14 , Figure 14 is a structural schematic diagram of an embodiment of the computer readable storage medium provided by the present application. The computer readable storage medium 140 is configured to store a computer program 141, and the computer program 141, when executed by a processor, is configured to implement the following method:

[0141] obtaining a first demand load according to a first demand temperature; controlling a segmented valve corresponding to the gas water heater to work according to the first demand load; wherein the segmented valve has a first segment working mode and a second segment working mode; the maximum working load corresponding to the first segment working mode is between the minimum working load and the maximum working load corresponding to the second segment working mode, and the minimum working load corresponding to the second segment working mode is between the minimum working load and the maximum working load corresponding to the first segment working mode; in response to the first demand load reaching a current switching point of the segmented valve and the actual temperature corresponding to the first demand load not reaching the first demand temperature, controlling the segmented valve to switch from a current segment working mode to another segment working mode; wherein the current segment working mode is the first segment working mode or the second segment working mode; the working load corresponding to the current switching point does not reach the working load corresponding to a default switching point of the segmented valve in the current segment working mode, and the working load corresponding to the current switching point is in a load overlap interval of the second segment working mode and the first segment working mode.

[0142] In some embodiments, the computer program 141, when executed by the processor, is configured to implement the following method: the current switching point is determined in advance in the following manner: a second demand load is obtained according to a second demand temperature; a corresponding segmented valve in the gas water heater is controlled to work according to the second demand load; in response to the second demand load reaching a load overlapping interval of the segmented valve, and an actual temperature corresponding to the second demand load not reaching the second demand temperature within a preset time length, the segmented valve is controlled to switch from a current segment working mode to another segment working mode; the load overlapping interval is between a first working load of a default switching point in the second segment working mode and a second working load corresponding to a default switching point in the first segment working mode; and the current switching point is determined according to the second demand load.

[0143] In some embodiments, the computer program 141, when executed by the processor, is configured to implement the following method: the second demand load is taken as the working load corresponding to the current switching point; or, in response to the current segment working mode being the first segment working mode, a preset load is subtracted from the second demand load, and the second demand load after the subtraction is taken as the working load corresponding to the current switching point; or, in response to the current segment working mode being the first segment working mode, a preset load is subtracted from the second demand load, and the second demand load after the subtraction is taken as the working load corresponding to the current switching point, and the current switching point in the first segment working mode is determined according to the current switching point in the second segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

[0144] In some embodiments, the computer program 141, when executed by the processor, is configured to implement the following method: the second demand load is taken as the working load corresponding to the current switching point; or, in response to the current segment working mode being the second segment working mode, a preset load is added to the second demand load, and the second demand load after the addition is taken as the working load corresponding to the current switching point; or, in response to the current segment working mode being the second segment working mode, a preset load is added to the second demand load, and the second demand load after the addition is taken as the working load corresponding to the current switching point, and the current switching point in the first segment working mode is determined according to the current switching point in the second segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

[0145] In some embodiments, the computer program 141, when executed by the processor, is configured to implement the following method: the current switching point is determined in advance in the following manner: within a first preset time length, third demand loads corresponding to multiple third demand temperatures are counted; and the current switching point is determined from the multiple third demand loads.

[0146] In some embodiments, the computer program 141, when executed by the processor, is configured to implement the following method: performing a probability calculation according to a plurality of third demand loads to obtain a target demand load; wherein the target demand load is a third demand load with the highest switching probability among the plurality of third demand loads; and taking the target demand load as the working load corresponding to the current switching point of the segmented valve.

[0147] In some embodiments, in response to the first demand load reaching the current switching point of the segmented valve and the actual temperature corresponding to the first demand load not reaching the first demand temperature, after the segmented valve is switched from the current segment working mode to another segment working mode, the computer program 141, when executed by the processor, is configured to implement the following method: counting the number of demand loads that do not reach the current switching point during multiple uses of the gas water heater; scoring the current switching point according to the number; in response to the score being less than a preset threshold, re-determining the current switching point; and in response to the score being greater than or equal to the preset threshold, maintaining the current switching point.

[0148] In some embodiments, the computer program 141, when executed by the processor, is configured to implement the following method: the load overlap interval between the current switching point of the segmented valve in the second segment working mode and the current switching point of the segmented valve in the first segment working mode is greater than or equal to a preset overlap interval.

[0149] In some embodiments, the computer program 141, when executed by the processor, is further configured to implement the method of any one of the embodiments of the present application.

[0150] In summary, the gas water heater and the control method thereof, and the computer readable storage medium provided by the present application set the current switching point on the premise that the first segment working mode and the second segment working mode of the segmented valve have default switching points, the working load corresponding to the current switching point is in the load overlap interval of the second segment working mode and the first segment working mode, and when the first demand load reaches the current switching point of the segmented valve, the segmented valve is directly switched from the current segment working mode to another segment working mode, without the need to wait for a preset time interval after entering the load overlap interval, as in the related art, and then switch the segmented valve from the current segment working mode to another segment working mode, thereby reducing the slow switching of the segmented phenomenon and improving the user's water experience.

[0151] In the several embodiments of the present application, it should be understood that the disclosed method and device can be implemented in other ways. For example, the device embodiments described above are only schematic. The division of the modules or units is only a logical function division. There can be another division manner for actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0152] The integrated units in the above other embodiments, if implemented in the form of software function units and sold or used as independent products, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, essentially or in other words, the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processing circuit component (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0153] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent flow transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A control method of a gas water heater, characterized by, The control method comprises: obtaining a first demand load according to a first demand temperature; controlling the corresponding segmented valve in the gas water heater to work according to the first demand load; wherein the segmented valve has a first segment working mode and a second segment working mode; the maximum working load corresponding to the first segment working mode is between the minimum working load and the maximum working load of the second segment working mode, and the minimum working load corresponding to the second segment working mode is between the minimum working load and the maximum working load of the first segment working mode; in response to the first demand load reaching a current switching point of the segmented valve, controlling the segmented valve to switch from the current segment working mode to another segment working mode; wherein the current segment working mode is the first segment working mode or the second segment working mode; the working load corresponding to the current switching point does not reach the working load corresponding to the default switching point of the segmented valve in the current segment working mode, and the working load corresponding to the current switching point is in the load overlapping interval between the second segment working mode and the first segment working mode; the load overlapping interval between the current switching point of the segmented valve in the second segment working mode and the current switching point of the segmented valve in the first segment working mode is greater than or equal to a preset overlapping interval; after the response to the first demand load reaching the current switching point of the segmented valve, controlling the segmented valve to switch from the current segment working mode to another segment working mode, the method further comprises: in a plurality of gas water heater use processes, counting the number of demand loads that do not reach the current switching point; scoring the current switching point according to the number; in response to the score being less than a preset threshold, re-determining the current switching point; in response to the score being greater than or equal to the preset threshold, maintaining the current switching point.

2. The control method according to claim 1, characterized by, The current switching point is determined in the following way: obtaining a second demand load according to a second demand temperature; controlling the corresponding segmented valve in the gas water heater to work according to the second demand load; in response to the second demand load reaching the load overlapping interval of the segmented valve and maintaining for a preset time length, controlling the segmented valve to switch from the current segment working mode to another segment working mode; the load overlapping interval is between the first working load of the default switching point in the second segment working mode and the second working load corresponding to the default switching point in the first segment working mode; determining the current switching point according to the second demand load.

3. The control method according to claim 2, characterized by, The determination of the current switching point according to the second demand load comprises: taking the second demand load as the working load corresponding to the current switching point; or, in response to the current segment working mode being the first segment working mode, reducing a preset load from the second demand load, and taking the reduced second demand load as the working load corresponding to the current switching point. Or, in response to the current segment working mode being the first segment working mode, reducing a preset load from the second demand load, taking the reduced second demand load as a working load corresponding to the current switching point, and determining the current switching point in the second segment working mode according to the current switching point in the first segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

4. The control method according to claim 2, characterized by, The current switching point is determined according to the second demand load, including: Taking the second demand load as a working load corresponding to the current switching point; Or, in response to the current segment working mode being the second segment working mode, increasing a preset load from the second demand load, and taking the increased second demand load as a working load corresponding to the current switching point; Or, in response to the current segment working mode being the second segment working mode, increasing a preset load from the second demand load, and taking the increased second demand load as a working load corresponding to the current switching point; and determining the current switching point in the first segment working mode according to the current switching point in the second segment working mode; wherein the working load corresponding to the current switching point in the first segment working mode is greater than the working load corresponding to the current switching point in the second segment working mode.

5. The control method according to claim 1, characterized by, The current switching point is determined in advance in the following way: In a first preset time period, a third demand load corresponding to a third demand temperature is counted multiple times; The current switching point is determined from a plurality of third demand loads.

6. The control method according to claim 5, characterized by The current switching point is determined from a plurality of third demand loads, including: According to a plurality of third demand loads, a target demand load is obtained by probability calculation; wherein the target demand load is the third demand load with the highest switching probability in a plurality of third demand loads; The target demand load is taken as a working load corresponding to the current switching point.

7. A gas water heater, characterised by, The gas water heater comprises: A segmented valve; A processor connected to the segmented valve; A memory connected to the processor for storing a computer program; The processor is used to execute the computer program to realize the method of any one of claims 1-6.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium is used to store a computer program, and the computer program is used to realize the method of any one of claims 1-6 when executed by a processor.

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