Water heater and control method, system, device, and medium therefor

Abstract

The present disclosure provides a water heater and a control method, system, device and medium thereof, the control method comprising: setting a target outlet water temperature of the water heater; obtaining an output heat value of the water heater in a preset running state; obtaining a first flow threshold value based on the target outlet water temperature and the output heat value; determining a running control strategy of the water heater based on the first flow threshold value and a fixed flow threshold value. The present disclosure obtains the first flow threshold value through the pre-determined target outlet water temperature, actual inlet water temperature and output heat value of the water heater, and obtains the target flow threshold value through the first flow threshold value and the fixed flow threshold value, so as to control the water heater to stop heating. The size of the target flow threshold value changes with the performance of the water heater and the environmental conditions, and the size of the control target flow threshold value is dynamically adjusted, which ensures the accuracy and rationality of the control of the water heater in the stop heating state, guarantees the safety of the user when using hot water, and improves the user experience.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of water heaters, and in particular to a water heater, a control method, system, device and medium thereof. BACKGROUND

[0002] At present, a fixed flow threshold is usually used to control the water heater to stop heating, and when the actual water flow through the water heater is less than the fixed flow threshold, the water heater is controlled to stop heating. However, when the user uses cold-hot mixed water at the water use end for bathing, etc., it is likely that the cold water flow is large and the hot water flow is small, and in this state, the actual water flow through the water heater is too small, which can cause the water heater to stop heating, and thus the user mixes warm water but it soon becomes cold water, which causes the user to be disturbed and the user experience is poor. SUMMARY

[0003] The technical problem to be solved by the present disclosure is to overcome the defects in the prior art that the fixed flow threshold is used to control the water heater to stop heating, which can cause the water heater to stop heating and cold water to flow out when the user mixes water, which causes the user to be disturbed and the user experience is poor, and to provide a water heater, a control method, system, device and medium thereof.

[0004] The present disclosure solves the above technical problems by the following technical solutions:

[0005] The present disclosure provides a control method of a water heater, which comprises:

[0006] setting a target outlet water temperature of the water heater;

[0007] obtaining an output heat value of the water heater in a preset running state;

[0008] obtaining a first flow threshold based on the target outlet water temperature and the output heat value;

[0009] determining a running control strategy of the water heater based on the first flow threshold and a fixed flow threshold.

[0010] Preferably, the step of determining the running control strategy of the water heater based on the first flow threshold and the fixed flow threshold comprises:

[0011] when the first flow threshold is less than the fixed flow threshold, taking the first flow threshold as a target flow threshold;

[0012] when the first flow threshold is greater than or equal to the fixed flow threshold, taking the fixed flow threshold as the target flow threshold;

[0013] control the water heater to stop the heating state when it is detected that the actual water flow rate through the water heater is less than the target flow rate threshold.

[0014] Preferably, the target outlet water temperature comprises a temperature equal to a user-set temperature, a temperature higher than the user-set temperature by a set value, or a default outlet water temperature set by the water heater factory.

[0015] Preferably, the preset operating state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.

[0016] Preferably, the step of obtaining a first flow rate threshold based on the target outlet water temperature and the output heat value comprises:

[0017] obtaining an actual inlet water temperature of the water heater;

[0018] calculating the first flow rate threshold based on the target outlet water temperature, the actual inlet water temperature, and the output heat value.

[0019] Preferably, the calculation formula for calculating the first flow rate threshold based on the target outlet water temperature, the actual inlet water temperature, and the output heat value is as follows:

[0020] q = Q / (t1-t2)

[0021] wherein q is used to represent the first flow rate threshold, Q is used to represent the output heat value, t1 is used to represent the target outlet water temperature, and t2 is used to represent the actual inlet water temperature.

[0022] Preferably, the step of controlling the water heater to stop the heating state when it is detected that the actual water flow rate through the water heater is less than the target flow rate threshold comprises:

[0023] when it is detected that the actual water flow rate is less than the target flow rate threshold, determining whether the actual water flow rate is greater than a second preset flow rate threshold;

[0024] wherein the second preset flow rate threshold is less than the target flow rate threshold.

[0025] if yes, controlling the water heater to work in the preset operating state, and controlling the water heater to stop the heating state when it is detected that an actual outlet water temperature of the water heater is greater than a sum of the target outlet water temperature and a preset temperature difference threshold;

[0026] if no, controlling the water heater to stop the heating state.

[0027] The present disclosure also provides a control system of a water heater, comprising:

[0028] a target outlet water temperature setting module configured to set a target outlet water temperature of the water heater;

[0029] an output heat value obtaining module configured to obtain an output heat value of the water heater in a preset operating state;

[0030] a first flow threshold value obtaining module configured to obtain a first flow threshold value based on the target outlet water temperature and the output heat value;

[0031] an operating control strategy determining module configured to determine an operating control strategy of the water heater based on the first flow threshold value and a fixed flow threshold value.

[0032] Preferably, the operating control strategy determining module comprises a target flow threshold value determining unit and a control unit.

[0033] The target flow threshold value determining unit is configured to take the first flow threshold value as a target flow threshold value when the first flow threshold value is less than the fixed flow threshold value.

[0034] The target flow threshold value determining unit is further configured to take the fixed flow threshold value as the target flow threshold value when the first flow threshold value is greater than or equal to the fixed flow threshold value.

[0035] The control unit is configured to control the water heater to stop heating when it is detected that an actual water flow through the water heater is less than the target flow threshold value.

[0036] Preferably, the target outlet water temperature comprises a temperature equal to a user-set temperature, a temperature higher than the user-set temperature by a set value, or a default outlet water temperature set by the water heater at factory.

[0037] Preferably, the preset operating state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.

[0038] Preferably, the first flow threshold value obtaining module comprises an actual inlet water temperature obtaining unit and a first flow threshold value determining unit.

[0039] The actual inlet water temperature obtaining unit is configured to obtain an actual inlet water temperature of the water heater.

[0040] The first flow threshold value determining unit is configured to calculate the first flow threshold value based on the target outlet water temperature, the actual inlet water temperature, and the output heat value.

[0041] Preferably, the first flow threshold value determining unit calculates the first flow threshold value according to the following formula:

[0042] q = Q / (t1 - t2)

[0043] wherein q is used to represent the first flow threshold, Q is used to represent the output heat value, t1 is used to represent the target outlet water temperature, and t2 is used to represent the actual inlet water temperature.

[0044] Preferably, the control unit comprises a judging sub-unit and a control sub-unit.

[0045] The judging sub-unit is configured to judge whether the actual water flow is greater than a second preset flow threshold when it is detected that the actual water flow is less than the target flow threshold.

[0046] wherein the second preset flow threshold is less than the target flow threshold.

[0047] If yes, the control sub-unit is configured to control the water heater to work in the preset operation state, and control the water heater to stop the heating state when it is detected that the actual outlet water temperature of the water heater is greater than the sum of the target outlet water temperature and a preset temperature difference threshold.

[0048] If no, the control sub-unit is configured to control the water heater to stop the heating state.

[0049] The present disclosure also provides a water heater comprising the control system of the water heater as described above.

[0050] The present disclosure also provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and configured to run on the processor, wherein the processor executes the computer program to implement the control method of the water heater as described above.

[0051] The present disclosure also provides a computer readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the control method of the water heater as described above.

[0052] On the basis of common knowledge in the art, the preferred conditions can be combined in any manner to obtain various preferred examples of the present disclosure.

[0053] The positive progress effect of the present disclosure is that:

[0054] The first flow threshold value is obtained by the predetermined target outlet water temperature, the actual inlet water temperature and the output heat value of the water heater, the target flow threshold value is obtained by the first flow threshold value and the fixed flow threshold value, so as to control the water heater to stop the heating state, the size of the target flow threshold value of the water heater changes with the performance of the water heater and the environmental condition, the size of the control target flow threshold value is dynamically adjusted, the problem that the water heater stops the heating state and the cold water flows out due to the too small water flow when the user mixes water is solved, and the safety of the user using hot water is ensured. In addition, by increasing the temperature reaction time, the problem that the water flow of the water heater is less than the target flow threshold value in a short time during the adjustment of the user, so that the water heater stops the heating state is solved, the accuracy and rationality of the control of the water heater stopping the heating state are ensured, the disturbance to the user using water is reduced, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 The flow chart of the control method of the water heater of the embodiment 1 of the present disclosure.

[0056] Figure 2 The flow chart of the control method of the water heater of the embodiment 2 of the present disclosure.

[0057] Figure 3 The module schematic diagram of the control system of the water heater of the embodiment 3 of the present disclosure.

[0058] Figure 4 The module schematic diagram of the control system of the water heater of the embodiment 4 of the present disclosure.

[0059] Figure 5 The structure schematic diagram of the water heater of the embodiment 5 of the present disclosure.

[0060] Figure 6 The structure schematic diagram of the electronic equipment of the embodiment 6 of the present disclosure. DETAILED DESCRIPTION

[0061] The present disclosure will be further described by the embodiments below, but the present disclosure is not limited in the scope of the embodiments.

[0062] Embodiment 1

[0063] The present embodiment provides a control method of a water heater, as shown in the figure, the control method comprises: Figure 1 The control method comprises:

[0064] S101, set the target outlet water temperature of the water heater.

[0065] S102, obtain the output heat value when the water heater is in a preset running state.

[0066] The execution sequence of steps S101 and S102 can be exchanged, or they can be executed simultaneously.

[0067] S103, based on the target outlet water temperature and the output heat value, a first flow threshold value is obtained.

[0068] In this embodiment, when designing a water heater (for example, a gas water heater), the standard output heat value Q1 of the gas water heater under different gas proportional valve current value states is measured under standard conditions. The calculation method of the standard output heat value is Q1=q1(t c -t j ). Wherein q1 is the water flow value corresponding to the standard output heat value under a certain gas proportional valve current value, t c is the outlet water temperature at that time, and t j is the inlet water temperature at that time. The lower limit of the standard heat value is Q min , corresponding to the minimum load of the water heater; the upper limit of the standard heat value is Q max , corresponding to the maximum load of the water heater.

[0069] After determining the target outlet water temperature t1, obtaining the output heat value Q of the water heater in the preset running state and the actual inlet water temperature t2, the target flow threshold value q can be calculated by the formula q=Q / (t1-t2). As can be seen from the formula, if the output heat value of the water heater is set lower, the target flow threshold value can be set lower; if the inlet water temperature is lower, the target flow threshold value can also be set lower. The target flow threshold value is determined by comprehensively considering the output heat value, the target outlet water temperature, the actual inlet water temperature and other factors, so that the size of the target flow threshold value changes with the performance of the water heater and the environmental conditions, and the size of the target flow threshold value is dynamically adjusted.

[0070] S104, based on the first flow threshold value and the fixed flow threshold value, determining the running control strategy of the water heater.

[0071] In this embodiment, the minimum output heat value of the water heater in the heating state is Q min , when the inlet water temperature is constant and the user mixes water, the hot water flow will become too low, if the water heater does not stop heating, the actual outlet water temperature will become too high, if the user adjusts the faucet to the hot water state, it is possible to cause scalding accidents, by dynamically adjusting the size of the target flow threshold value, instead of directly reducing the target flow threshold value, the safety of the user using hot water is guaranteed.

[0072] In this embodiment, the first flow threshold value is obtained by the predetermined target outlet water temperature and the output heat value of the water heater, and the operation control strategy of the water heater is determined by the first flow threshold value and the fixed flow threshold value, which overcomes the problem that the water heater stops heating and cold water flows out when the user mixes water, guarantees the safety of the user using hot water, ensures the accuracy and rationality of the operation control strategy of the water heater, reduces the disturbance to the user using water, and improves the user experience.

[0073] Embodiment 2

[0074] The embodiment provides a control method of a water heater, which is a further improvement of the embodiment 1, as shown in the following. Figure 2

[0075] In an implementable scheme, the step S104 comprises:

[0076] S1041, when the first flow threshold value is less than the fixed flow threshold value, taking the first flow threshold value as the target flow threshold value;

[0077] S1042, when the first flow threshold value is greater than or equal to the fixed flow threshold value, taking the fixed flow threshold value as the target flow threshold value;

[0078] S1043, when it is detected that the actual water flow through the water heater is less than the target flow threshold value, controlling the water heater to stop the heating state.

[0079] In this embodiment, after obtaining the first flow threshold value based on the formula, the first flow threshold value and the fixed flow threshold value (such as 2 L / min) used in the prior art are compared, and the smaller one of the two is selected as the target flow threshold value.

[0080] In an implementable scheme, the target outlet water temperature comprises a temperature equal to the temperature set by the user, a temperature higher than the temperature set by the user by a set value, or a default outlet water temperature set by the water heater at the factory.

[0081] In this embodiment, the target outlet water temperature can be higher than the temperature set by the user by a set value, or lower than the temperature set by the user by a set value, and the specific value can be set or adjusted according to the actual situation.

[0082] The default outlet water temperature set by the water heater at the factory can be pre-set to a temperature threshold value according to the actual use of hot water in the water heater, such as the temperature of hot water not easy to scald when the user bathes, such as 50℃, etc., which is taken as the target outlet water temperature.

[0083] In addition, statistical data of the temperature set by the user in a historical time period, such as average value, median, mode, etc., can be obtained as the target outlet water temperature. ​

[0084] In an implementable solution, the preset operating state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.

[0085] In an implementable solution, step S103 includes:

[0086] S1031, obtaining an actual inlet water temperature of the water heater;

[0087] S1032, calculating a first flow threshold value based on the target outlet water temperature, the actual inlet water temperature and the output heat value.

[0088] In an implementable solution, based on the target outlet water temperature, the actual inlet water temperature and the output heat value, a calculation formula corresponding to the first flow threshold value is as follows:

[0089] q = Q / (t1-t2)

[0090] Wherein, q is used to represent the first flow threshold value, Q is used to represent the output heat value, t1 is used to represent the target outlet water temperature, and t2 is used to represent the actual inlet water temperature.

[0091] In an implementable solution, step S1043 includes:

[0092] S10431, when it is detected that the actual water flow is less than the target flow threshold value, determining whether the actual water flow is greater than a second preset flow threshold value;

[0093] Wherein, the second preset flow threshold value is less than the target flow threshold value;

[0094] If yes, step S10432 is executed;

[0095] If no, step S10433 is executed.

[0096] S10432, controlling the water heater to work in the preset operating state, and when it is detected that the actual outlet water temperature of the water heater is greater than the sum of the target outlet water temperature and a preset temperature difference threshold value, controlling the water heater to stop heating state;

[0097] S10433, controlling the water heater to stop heating state.

[0098] In this embodiment, the second preset flow threshold is a relatively small value, such as 0.5 L / min. When the actual water flow is between the value and the target flow threshold, the water heater is not directly controlled to stop the heating state, but is controlled to work in the minimum load state. When it is detected that the actual outlet water temperature is higher than the target outlet water temperature by a certain value, the water heater is controlled to stop the heating state. The temperature reaction time is used to cope with the problem that the water flow of the water heater is less than the target flow threshold for a short time during user adjustment, which causes the water heater to stop the heating state. When the actual water flow is less than the second preset flow threshold, the water heater is directly controlled to stop the heating state.

[0099] When the target outlet water temperature is the temperature set by the user, the value of the second preset temperature difference threshold can be set or adjusted according to the actual situation. When the target outlet water temperature is higher than the temperature set by the user by a set value, or when the target outlet water temperature is the default outlet water temperature set by the water heater when it is shipped, if the temperature is a temperature that is not easy to scald, such as 50℃, etc., the second preset temperature difference threshold can be set or adjusted to a relatively small value to ensure the safety of the user when using hot water.

[0100] In an implementable scheme, the control method further includes:

[0101] When it is detected that the actual water flow is greater than the third preset flow threshold, the water heater is controlled to start the heating state.

[0102] The third preset flow threshold is greater than the target flow threshold.

[0103] In this embodiment, the third preset flow threshold can be 2.5 L / min. The specific data can be set or adjusted according to the actual situation, and is not limited here.

[0104] The working principle of the control method of the water heater of this embodiment will be described below in combination with specific examples:

[0105] The target outlet water temperature can be a temperature set by a user, a temperature higher than the temperature set by the user by a set value, or a default outlet water temperature set by the water heater factory; a first flow threshold is calculated according to the target outlet water temperature, a detected actual inlet water temperature of the water heater, and a known minimum output heat value of the water heater; the first flow threshold and a fixed flow threshold are compared, and the smaller one is selected as a target flow threshold; when it is detected that the actual water flow of the water heater is greater than a third preset flow threshold, the water heater is controlled to start a heating state; when it is detected that the actual water flow of the water heater is less than the target flow threshold, the water heater is controlled to work in a heating state corresponding to the minimum output heat value until it is detected that the actual outlet water temperature of the water heater is greater than the target outlet water temperature by a certain value, and the water heater is controlled to stop the heating state; when it is detected that the actual water flow of the water heater is less than a second preset flow threshold, the water heater is directly controlled to stop the heating state.

[0106] In the embodiment, the first flow threshold is obtained through the target outlet water temperature, the actual inlet water temperature, and the output heat value of the water heater, and the target flow threshold is obtained through the first flow threshold and the fixed flow threshold, so that the water heater is controlled to stop the heating state. The size of the target flow threshold of the water heater changes with the performance of the water heater and the environmental conditions, the size of the target flow threshold is dynamically adjusted, the problem that the water heater stops the heating state due to too small water flow when the user mixes water is overcome, and the safety of the user when using hot water is ensured. In addition, by increasing the temperature reaction time, the problem that the water flow of the water heater is less than the target flow threshold for a short time during the adjustment of the user, causing the water heater to stop the heating state, is solved, the accuracy and rationality of the control of the water heater to stop the heating state are ensured, the disturbance to the user caused by water use is reduced, and the user experience is improved.

[0107] Embodiment 3

[0108] The embodiment provides a control system of a water heater, as shown in the figure, the control system comprises: Figure 3

[0109] A target outlet water temperature setting module 1 is configured to set a target outlet water temperature of the water heater.

[0110] An output heat value acquisition module 2 is configured to acquire an output heat value of the water heater in a preset running state.

[0111] A first flow threshold acquisition module 3 is configured to obtain a first flow threshold based on the target outlet water temperature and the output heat value.

[0112] A running control strategy determination module 4 is configured to determine a running control strategy of the water heater based on the first flow threshold and a fixed flow threshold.

[0113] ​The working principle of this embodiment is the same as that of the control method of the water heater corresponding to Embodiment 1, which is not discussed here.

[0114] In this embodiment, the first flow threshold is obtained through the predetermined target outlet water temperature and the output heat value of the water heater, and the operation control strategy of the water heater is determined through the first flow threshold and the fixed flow threshold, which overcomes the problem that the water heater stops heating and cold water flows out when the user mixes water due to too small water flow, guarantees the safety of the user when using hot water, ensures the accuracy and rationality of the operation control strategy of the water heater, reduces the disturbance to the user's water use, and improves the user's experience.

[0115] Embodiment 4

[0116] This embodiment provides a control system of a water heater, which is a further improvement of Embodiment 3, as shown in Figure 4 .

[0117] In an implementable scheme, the operation control strategy determination module 4 includes a target flow threshold determination unit 41 and a control unit 42;

[0118] The target flow threshold determination unit 41 is configured to take the first flow threshold as the target flow threshold when the first flow threshold is less than the fixed flow threshold;

[0119] The target flow threshold determination unit 41 is further configured to take the fixed flow threshold as the target flow threshold when the first flow threshold is greater than or equal to the fixed flow threshold;

[0120] The control unit 42 is configured to control the water heater to stop heating when it is detected that the actual water flow through the water heater is less than the target flow threshold.

[0121] In an implementable scheme, the target outlet water temperature includes a temperature equal to the temperature set by the user, a temperature higher than the temperature set by the user by a set value, or a default outlet water temperature set by the water heater at the factory.

[0122] In an implementable scheme, the preset operation state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.

[0123] In an implementable scheme, the first flow threshold acquisition module 3 includes an actual inlet water temperature acquisition unit 31 and a first flow threshold determination unit 32;

[0124] The actual inlet water temperature acquisition unit 31 is configured to acquire the actual inlet water temperature of the water heater;

[0125] The first flow threshold determination unit 32 is configured to calculate the first flow threshold based on the target outlet water temperature, the actual inlet water temperature, and the output heat value.

[0126] In an implementable solution, the first flow threshold value determination unit 32 calculates the calculation formula of the first flow threshold value as follows:

[0127] q = Q / (t1-t2)

[0128] Wherein, q is used to represent the first flow threshold value, Q is used to represent the output heat value, t1 is used to represent the target outlet water temperature, and t2 is used to represent the actual inlet water temperature.

[0129] In an implementable solution, the control unit 42 includes a judgment sub-unit 421 and a control sub-unit 422.

[0130] The judgment sub-unit 421 is used to judge whether the actual water flow is greater than a second preset flow threshold value when it is detected that the actual water flow is less than the target flow threshold value.

[0131] Wherein, the second preset flow threshold value is less than the target flow threshold value.

[0132] If yes, the control sub-unit 422 is used to control the water heater to work in a preset running state, and control the water heater to stop heating state when it is detected that the actual outlet water temperature of the water heater is greater than the sum of the target outlet water temperature and a preset temperature difference threshold value.

[0133] If no, the control sub-unit 422 is used to control the water heater to stop heating state.

[0134] The working principle of the embodiment is the same as that of the control method of the water heater corresponding to the embodiment 2, which will not be discussed here.

[0135] In the embodiment, the first flow threshold value is obtained through the target outlet water temperature, the actual inlet water temperature and the output heat value of the water heater, and the target flow threshold value is obtained through the first flow threshold value and the fixed flow threshold value, so as to control the water heater to stop heating state. The size of the target flow threshold value of the water heater changes with the performance of the water heater and the environmental conditions, and the size of the target flow threshold value is dynamically adjusted, which overcomes the problem that the water heater stops heating state and flows cold water due to too small water flow when the user mixes water, and also guarantees the safety of the user when using hot water. In addition, by increasing the temperature reaction time, the problem that the water flow of the water heater is less than the target flow threshold value for a short time during the adjustment of the user, causing the water heater to stop heating state, is solved, the accuracy and rationality of the control of the water heater to stop heating state are guaranteed, the disturbance to the user's water use is reduced, and the user's use experience is improved.

[0136] Embodiment 5

[0137] The embodiment provides a water heater, which includes the control system of the water heater as described in the embodiment 3 or 4.

[0138] As Figure 5 shown, it is a structure schematic diagram of a water heater, which is a gas water heater, including a water inlet 801 and a water outlet 802, a water inlet temperature sensor 803 and a water flow sensor 804 are arranged on the pipeline where the water inlet 801 is located, and a water outlet temperature sensor 805 is arranged on the pipeline where the water outlet 802 is located. The water inlet temperature sensor 803 is used to collect the actual water inlet temperature, the water flow sensor 804 is used to collect the actual water flow through the water heater, and the water outlet temperature sensor 805 is used to collect the actual water outlet temperature.

[0139] The water heater further includes an air inlet 806, a gas proportional valve 807, a fan 808, a segmented pipe 809, a burner 810, a heat exchanger 811 and an electronic controller assembly 812. The electronic controller assembly 812 is used to control the working state of the water heater.

[0140] The water heater in the embodiment integrates the above-mentioned control system, specifically obtains a first flow threshold value through a predetermined target water outlet temperature, an actual water inlet temperature and an output heat value of the water heater, obtains a target flow threshold value through the first flow threshold value and a fixed flow threshold value, so as to control the water heater to stop the heating state, and the size of the target flow threshold value of the water heater changes with the performance of the water heater and the environmental conditions, so as to dynamically adjust the size of the target flow threshold value, overcome the problem that when the user mixes water, the water heater stops the heating state due to the too small water flow, and also ensure the safety of the user when using hot water. In addition, by increasing the temperature reaction time, the problem that the water flow of the water heater is less than the target flow threshold value for a short time during the user's adjustment, so as to cause the water heater to stop the heating state, is solved, the accuracy and rationality of the control of the water heater to stop the heating state are ensured, the disturbance to the user's water use is reduced, and the user's use experience is improved.

[0141] Embodiment 6

[0142] As Figure 6 shown, it is a structure schematic diagram of an electronic device provided by the embodiment 6 of the present disclosure. It includes a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the control method of the water heater in the above-mentioned embodiments when executing the computer program. Figure 6 The electronic device 90 shown is only an example, and should not bring any limitation to the function and use range of the embodiment of the present disclosure.

[0143] The electronic device 90 can be in the form of a general computing device, for example, it can be a server device. The components of the electronic device 90 can include but are not limited to the above-mentioned at least one processor 91, the above-mentioned at least one memory 92, a bus 93 connecting different system components including the memory 92 and the processor 91.

[0144] Bus 93 includes a data bus, an address bus, and a control bus.

[0145] Memory 92 can include volatile memory, such as random access memory (RAM) 921 and / or cache memory 922, and can further include non-volatile memory, both readable and writeable (e.g., read-only memory (ROM) 923).

[0146] Memory 92 can also include a program / utility 925 having a set (at least one) of program modules 924, including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which can include implementation of a network environment, alone or in combination.

[0147] Processor 91 can execute instructions, for example, of the program modules 924, of an operating system 926, and / or of application programs 927 to control the functioning of the electronic device 90 and of various subcomponents thereof according to the teachings of this disclosure. The electronic device 90 can be implemented in a variety of environments and / or configurations.

[0148] The electronic device 90 can also communicate with one or more external devices 94 such as a keyboard or pointing device, through Input / Output (I / O) interface(s) 95. Additionally, the electronic device 90 can communicate with one or more networks, such as a Local Area Network (LAN), a Wide Area Network (WAN), and / or a public network such as the Internet, through network adapter 96. As depicted, network adapter 96 communicates with the other components of the electronic device 90 through bus 93. It should be appreciated that although not shown, other hardware and / or software components could be used in conjunction with the electronic device 90. These include, but are not limited to, microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc.

[0149] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the foregoing detailed description, such division is merely exemplary and not mandatory. Indeed, according to embodiments of the present disclosure, features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, features and functions of one unit / module described above can be further divided into a plurality of units / modules.

[0150] Embodiment 7

[0151] The present disclosure also provides a computer readable storage medium having stored thereon a computer program, the program being executed by a processor to implement the control method of the water heater as in the above embodiments.

[0152] More specifically, the readable storage medium can include, but is not limited to, a portable disc, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0153] In possible implementation manners, the disclosure can also be implemented in the form of a program product, which includes program codes for causing terminal equipment to execute the control method of the water heater as in the above embodiments when the program product is run on the terminal equipment.

[0154] The program codes for executing the disclosure can be written in any combination of one or more programming languages, and can be executed entirely on the user equipment, partially on the user equipment, as a separate software package, partially on the user equipment and partially on a remote device, or entirely on a remote device.

[0155] Although the specific implementation manners of the disclosure are described above, those skilled in the art should understand that this is only an illustration, and the protection scope of the disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these implementation manners without departing from the principles and essence of the disclosure, and these changes and modifications all fall within the protection scope of the disclosure.

Claims

1. A control method of a water heater, characterized by, The control method comprises: setting a target outlet water temperature of the water heater; obtaining an output heat value of the water heater in a preset operating state; obtaining a first flow threshold value based on the target outlet water temperature and the output heat value; determining an operating control strategy of the water heater based on the first flow threshold value and a fixed flow threshold value; the step of determining the operating control strategy of the water heater based on the first flow threshold value and the fixed flow threshold value comprises: when the first flow threshold value is less than the fixed flow threshold value, taking the first flow threshold value as a target flow threshold value; when the first flow threshold value is greater than or equal to the fixed flow threshold value, taking the fixed flow threshold value as the target flow threshold value; when it is detected that an actual water flow through the water heater is less than the target flow threshold value, controlling the water heater to stop a heating state.

2. The control method of the water heater according to claim 1, characterized by, The target outlet water temperature comprises a temperature equal to a user-set temperature, a temperature higher than the user-set temperature by a set value, or a default outlet water temperature set by the water heater at factory.

3. The control method of the water heater according to claim 1, characterized by, The preset operating state is a minimum load state of the water heater, and the output heat value is a minimum output heat value corresponding to the minimum load state.

4. The control method of the water heater according to claim 3, characterized by, The step of obtaining the first flow threshold value based on the target outlet water temperature and the output heat value comprises: obtaining an actual inlet water temperature of the water heater; calculating the first flow threshold value based on the target outlet water temperature, the actual inlet water temperature and the output heat value.

5. The control method of the water heater according to claim 4, characterized by, The calculation formula corresponding to the first flow threshold value calculated based on the target outlet water temperature, the actual inlet water temperature and the output heat value is as follows: q=Q / (t1-t2); wherein q is used to represent the first flow threshold value, Q is used to represent the output heat value, t1 is used to represent the target outlet water temperature, and t2 is used to represent the actual inlet water temperature.

6. The control method of the water heater according to any one of claims 1 to 5, characterized by, The step of controlling the water heater to stop the heating state when it is detected that the actual water flow through the water heater is less than the target flow threshold value comprises: when it is detected that the actual water flow is less than the target flow threshold value, determining whether the actual water flow is greater than a second preset flow threshold value; wherein the second preset flow threshold value is less than the target flow threshold value; if yes, controlling the water heater to work in the preset operating state, and when it is detected that an actual outlet water temperature of the water heater is greater than a sum of the target outlet water temperature and a preset temperature difference threshold value, controlling the water heater to stop the heating state; if no, controlling the water heater to stop the heating state.

7. A control system for a water heater, the control system comprising: The control system comprises: a target outlet water temperature setting module configured to set a target outlet water temperature of the water heater; an output heat value obtaining module configured to obtain an output heat value of the water heater in a preset operating state; a first flow threshold value obtaining module configured to obtain a first flow threshold value based on the target outlet water temperature and the output heat value; an operating control strategy determining module configured to determine an operating control strategy of the water heater based on the first flow threshold value and a fixed flow threshold value; the operating control strategy determining module comprises a target flow threshold value determining unit and a control unit; The target flow threshold determination unit is configured to determine the first flow threshold as a target flow threshold when the first flow threshold is less than the fixed flow threshold. The target flow threshold determination unit is further configured to determine the fixed flow threshold as the target flow threshold when the first flow threshold is greater than or equal to the fixed flow threshold. The control unit is configured to control the water heater to stop heating when it is detected that an actual water flow through the water heater is less than the target flow threshold.

8. A water heater, characterized by The water heater comprises the control system of the water heater according to claim 7.

9. An electronic device comprising a memory, a processor, and a computer program stored on the memory for running on the processor, characterized in that, The processor, when executing the computer program, implements the control method of the water heater according to any one of claims 1-6.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by the processor, implements the control method of the water heater according to any one of claims 1-6.

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