Control methods, systems, gas water heaters and media for gas water heaters

Abstract

This invention discloses a control method, system, gas water heater, and medium for a gas water heater. The gas water heater includes a gas valve and a flame sensing device. The control method includes: controlling the gas valve to open; controlling the gas water heater to perform an ignition action; during the ignition process, if the flame sensing device does not detect a flame within a first preset time period, calculating the actual ignition heat generated within the first preset time period, and determining the fault type of the gas water heater based on the actual ignition heat and a preset standard ignition heat; the standard ignition heat is the heat generated by the gas water heater during normal ignition within the first preset time period. This invention determines the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat, making fault location more accurate, allowing users to know the specific fault type, and improving user experience; it also provides the possibility for water heaters to take corresponding measures for different fault types, improving the efficiency of solving ignition problems.

Description

Technical Field

[0001] This invention relates to the field of gas water heaters, and specifically to a control method, system, gas water heater, and medium for a gas water heater. Background Technology

[0002] A gas water heater generally consists of a gas valve, inlet water temperature sensor, water flow sensor, segmented pipe, electronic controller assembly, heat exchanger, burner, fan, and outlet water temperature sensor. A gas water heater will only enter the normal combustion process after detecting a flame in the combustion chamber of the burner during ignition. If, during ignition, the gas valve opens and the ignition action is executed, but no flame is detected within 10 seconds, it indicates a malfunction in ignition. The general solution is to re-execute the ignition action. If malfunctions occur repeatedly, an ignition fault report will be displayed, and the gas water heater will stop working. Therefore, flame detection during ignition is crucial for the normal operation of a gas water heater. The following three reasons can lead to malfunctions in ignition:

[0003] Reason 1: Ignition failed, no flame exists.

[0004] Reason 2: Ignition was successful and a flame was present, but the flame condition was poor.

[0005] Reason 3: Ignition was successful and the flame was normal, but the flame sensing device was faulty.

[0006] Currently, when a water heater experiences a ignition failure, it does not make further judgments to determine the specific cause of the ignition failure. This leaves users unable to know the specific reason for the ignition failure, thus reducing the user experience. Furthermore, the water heater cannot take corresponding measures for different causes of ignition failure, reducing the efficiency of resolving ignition failure issues. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art in which the specific cause of the ignition failure problem cannot be determined after the water heater fails to ignite, which reduces the user experience and the efficiency of solving the ignition failure problem. The present invention provides a control method, system, gas water heater and medium for a gas water heater.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution:

[0009] This invention provides a control method for a gas water heater, the gas water heater including a gas valve and a flame sensing device, the control method comprising:

[0010] Control the gas valve to open;

[0011] Control the gas water heater to perform the ignition action;

[0012] During the ignition process, if the flame sensing device does not detect a flame within a first preset time period, the actual ignition heat generated within the first preset time period is calculated, and the fault type of the gas water heater is determined based on the actual ignition heat and the preset standard ignition heat; the standard ignition heat is the heat generated by the gas water heater when it ignites normally within the first preset time period.

[0013] Optionally, the step of determining the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat specifically includes:

[0014] Control the gas valve to close;

[0015] If the difference between the actual ignition heat and the standard ignition heat is greater than a first preset value and less than a second preset value, the gas valve is controlled to open again, and the gas water heater is controlled to perform the ignition action again; if the number of ignitions reaches the preset number, the fault type is determined to be a flame sensing device fault.

[0016] Optionally, the step of determining the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat further includes:

[0017] Control the gas valve to close;

[0018] If the difference between the actual ignition heat and the standard ignition heat is less than or equal to the first preset value, the gas valve is controlled to open again, and the opening degree of the gas valve is controlled to increase, and the gas valve is controlled to perform the ignition action again; if the opening degree of the gas valve reaches the preset opening degree, the fault type is determined to be a small flame or no flame fault.

[0019] Optionally, the step of determining the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat further includes:

[0020] Control the gas valve to close;

[0021] If the difference between the actual ignition heat and the standard ignition heat is greater than or equal to the second preset value, then the gas valve is controlled to open again, the opening degree of the gas valve is controlled to decrease, and the gas valve is controlled to perform the ignition action again.

[0022] Optionally, the gas water heater further includes an inlet and an outlet, and the step of calculating the actual ignition heat generated within the first preset time period specifically includes:

[0023] The actual ignition heat generated within the first preset time period is calculated based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period.

[0024] Optionally, the step of calculating the actual ignition heat generated within the first preset time period based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period specifically includes:

[0025] Within the first preset time period, the inlet flow rate, the inlet temperature, and the outlet temperature are detected once every second preset time period.

[0026] The actual ignition heat is calculated based on the detected inlet flow rate, inlet temperature, and outlet temperature.

[0027] Optionally, the control method further includes:

[0028] If the flame sensor detects a flame, it controls the gas water heater to enter heating mode.

[0029] The present invention also provides a control system for ignition failure of a gas water heater, the gas water heater including a gas valve and a flame sensing device, the control system including:

[0030] The first control module is used to control the gas valve to open;

[0031] The second control module is used to control the gas water heater to perform the ignition action;

[0032] The fault type determination module calculates the actual ignition heat generated within the first preset time period during the ignition process if the flame sensing device fails to detect a flame. Based on the actual ignition heat and a preset standard ignition heat, the module determines the fault type of the gas water heater. The standard ignition heat is the heat generated when the gas water heater ignites normally within the first preset time period.

[0033] The present invention also provides a gas water heater, including a memory, a processor, and a computer program stored in the memory and used to run on the processor, wherein the processor executes the computer program to implement the aforementioned control method for the gas water heater.

[0034] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the aforementioned control method for a gas water heater.

[0035] The positive and progressive effects of this invention are as follows: This invention determines the fault type of a gas water heater during the ignition process based on the actual ignition heat and the preset standard ignition heat, making fault location more accurate. Users can know the specific fault type that caused the poor ignition problem, thus improving the user experience. It also makes it possible for water heaters to take corresponding measures for different fault types, thereby improving the efficiency of solving poor ignition problems. Attached Figure Description

[0036] Figure 1 A flowchart of a control method for a gas water heater provided in Embodiment 1 of the present invention.

[0037] Figure 2 The flowchart is for step S105 provided in Embodiment 1 of the present invention.

[0038] Figure 3 This is a schematic diagram of the control system of a gas water heater provided in Embodiment 2 of the present invention.

[0039] Figure 4 This is a schematic diagram of the structure of a gas water heater provided in Embodiment 3 of the present invention. Detailed Implementation

[0040] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0041] Example 1

[0042] This embodiment provides a control method for a gas water heater, which includes a gas valve and a flame sensing device, such as... Figure 1 As shown, the control method includes:

[0043] S101, Control gas valve to open.

[0044] S102, Control the gas water heater to perform the ignition action.

[0045] S103. During the ignition process, determine whether the flame sensing device has detected a flame within a first preset time period; if not, proceed to step S104.

[0046] S104. Calculate the actual ignition heat generated within the first preset time period.

[0047] S105. Determine the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat.

[0048] The standard ignition heat is the heat generated when the gas water heater ignites normally within the first preset time period. Because the national standard stipulates that a single ignition process can last up to 10 seconds, the first preset time period can be set to 10 seconds, and this embodiment does not impose any restrictions on this.

[0049] In one alternative implementation, such as Figure 1 As shown, in step S103, if the judgment result is yes, then step S106 is executed.

[0050] S106. Control the gas water heater to enter heating mode.

[0051] In one optional implementation, step S105 specifically includes: controlling the gas valve to close; determining whether the difference between the actual ignition heat and the standard ignition heat is greater than a first preset value and less than a second preset value; if so, controlling the gas valve to open again and controlling the gas water heater to perform the ignition action again; if the number of ignitions reaches the preset number, determining the fault type as a flame sensing device fault.

[0052] Specifically, the first preset value and the second preset value can be set according to the actual situation, and this embodiment does not impose any restrictions on them.

[0053] Specifically, the preset number of times can be set according to actual conditions, and this embodiment does not impose any restrictions on this. Since the difference between the actual ignition heat and the standard ignition heat is greater than the first preset value and less than the second preset value, it indicates that the flame produced after controlling the gas water heater to perform the ignition action is normal. If the flame is normal, but the flame sensing device does not detect the flame within the first preset time period, then the flame sensing device may be malfunctioning. Next, keeping the gas valve opening unchanged, the gas valve is reopened, and the gas water heater is controlled to perform the ignition action again. Returning to step S103, the above steps are repeated. If the gas water heater is continuously controlled to perform the ignition action a preset number of times, and during the ignition process, the flame sensing device does not detect the flame within the first preset time period, and the difference between the actual ignition heat and the standard ignition heat is always greater than the first preset value and less than the second preset value, then it proves that the gas water heater can produce a flame normally, but the flame sensing device cannot detect the flame normally. The gas water heater malfunction can be resolved by replacing the flame sensing device.

[0054] In one optional implementation, step S105 specifically includes: controlling the gas valve to close; determining whether the difference between the actual ignition heat and the standard ignition heat is less than or equal to a first preset value; if so, controlling the gas valve to open again, and controlling the opening degree of the gas valve to increase, and controlling the gas valve to perform the ignition action again; if the opening degree of the gas valve reaches the preset opening degree, then determining the fault type as flame too small or no flame fault.

[0055] Specifically, the first preset value and the second preset value can be set according to the actual situation, and this embodiment does not impose any restrictions on them.

[0056] Specifically, the preset opening degree can be the maximum opening degree of the gas valve, and this embodiment does not limit this. Since the difference between the actual ignition heat and the standard ignition heat is less than or equal to the first preset value, it indicates that after controlling the gas water heater to perform the ignition action, the flame produced is too small or no flame is produced. Next, the opening degree of the gas valve is increased, the gas valve is reopened, and the gas water heater is controlled to perform the ignition action again. Returning to step S103, the above steps are repeated. If, when the gas valve opening degree has reached the preset opening degree, the flame sensing device does not detect a flame within the first preset time period during the ignition process, and the difference between the actual ignition heat and the standard ignition heat is always less than or equal to the first preset value, it proves that the gas water heater cannot produce a normal flame. This situation may be caused by a lack of gas flow in the gas pipeline. Subsequently, the gas water heater malfunction is resolved by replacing the gas pipeline to ensure normal gas flow within it.

[0057] In one optional implementation, step S105 specifically includes: controlling the gas valve to close; determining whether the difference between the actual ignition heat and the standard ignition heat is greater than or equal to a second preset value; if so, controlling the gas valve to open again, controlling the opening degree of the gas valve to decrease, and controlling the gas valve to perform the ignition action again.

[0058] Specifically, the first preset value and the second preset value can be set according to the actual situation, and this embodiment does not impose any restrictions on them.

[0059] Specifically, since the difference between the actual ignition heat and the standard ignition heat is greater than or equal to the second preset value, it indicates that a flame was generated after the gas water heater was ignited, but the flame load was too high. Next, the opening of the gas valve is reduced, the gas valve is reopened, and the gas water heater is ignited again. The process returns to step S103, and the above steps are repeated until the difference between the actual ignition heat and the standard ignition heat is greater than the first preset value and less than the second preset value.

[0060] In one alternative implementation, such as Figure 2 As shown, step S105 specifically includes:

[0061] S1051, Control gas valve to close.

[0062] S1052. Detect the difference between the actual ignition heat and the standard ignition heat; if the difference between the actual ignition heat and the standard ignition heat is greater than the first preset value and less than the second preset value, then execute step S1053; if the difference between the actual ignition heat and the standard ignition heat is less than or equal to the first preset value, then execute S1054; if the difference between the actual ignition heat and the standard ignition heat is greater than or equal to the second preset value, then execute S1055.

[0063] S1053, control the gas valve to open again and control the gas water heater to perform the ignition action again; if the number of ignitions reaches the preset number, the fault type is determined to be a flame sensing device fault.

[0064] S1054. Control the gas valve to open again, increase the opening degree of the gas valve, and control the gas valve to perform the ignition action again; if the opening degree of the gas valve reaches the preset opening degree, then determine the fault type as insufficient flame or no flame fault.

[0065] S1055, Control the gas valve to open again, control the opening degree of the gas valve to decrease, and control the gas valve to perform the ignition action again.

[0066] In one optional embodiment, the gas water heater further includes an inlet and an outlet, and step 104 specifically includes: calculating the actual ignition heat generated within the first preset time period based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period.

[0067] Because it takes time for water to be heated and reflected in the outlet temperature, and the inlet flow of a gas water heater is unstable, in order to ensure the practicality of the calculated actual ignition heat and reduce the deviation between the calculated actual ignition heat and the actual situation, the actual ignition heat is not calculated at a single moment, but rather within a first preset time period.

[0068] In one optional implementation, the step of calculating the actual ignition heat generated within the first preset time period based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period specifically includes: within the first preset time period, detecting the inlet flow rate, inlet temperature, and outlet temperature every second preset time period, and calculating the actual ignition heat based on the detected inlet flow rate, inlet temperature, and outlet temperature. The first preset time period is divisible by the second preset time period.

[0069] Specifically, the actual ignition heat can be calculated using the following formula:

[0070]

[0071] Where Qs represents the actual ignition heat, tc i tj represents the outlet water temperature at the i-th test. i q represents the inlet water temperature at the inlet during the i-th test. i The inlet flow rate is represented by Δt, the second preset duration is represented by Δt, and N is represented by the number of times the test is performed within the first preset duration. N = T / Δt, where T represents the first preset duration.

[0072] In one optional implementation, the step of calculating the actual ignition heat generated within the first preset time period based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period specifically includes: within the first preset time period, repeatedly detecting the inlet flow rate, inlet temperature, and outlet temperature, and calculating the actual ignition heat based on the detected inlet flow rate, inlet temperature, and outlet temperature. Each detection yields a set of mutually matching inlet flow rate, inlet temperature, and outlet temperature; the interval between each detection is not fixed and can be the same or different; and the final detection is performed exactly at the end of the first preset time period.

[0073] Specifically, the actual ignition heat can be calculated using the following formula:

[0074]

[0075] Where Qs represents the actual ignition heat, tc i tj represents the outlet water temperature during the i-th test. i q represents the inlet water temperature at the inlet during the i-th test. i Δt represents the inlet flow rate at the inlet during the i-th test. i Δt represents the time interval between the i-th and (i-1)-th detections. When i = 1, Δt i Take the duration that has elapsed within the first preset time period during the first detection, where N represents the number of detections within the first preset time period.

[0076] In one alternative implementation, the control method further includes: if the flame sensing device detects a flame, controlling the gas water heater to enter the heating mode.

[0077] This embodiment provides a control method for a gas water heater. This control method determines the fault type of the gas water heater during the ignition process based on the actual ignition heat and the preset standard ignition heat, making fault location more accurate. Users can know the specific fault type that caused the poor ignition problem, thus improving the user experience. It also makes it possible for the water heater to take corresponding measures for different fault types, improving the efficiency of solving the poor ignition problem.

[0078] Example 2

[0079] This embodiment provides a control system for ignition failure in a gas water heater. The gas water heater includes a gas valve and a flame sensing device, such as... Figure 3 As shown, the control system 20 includes a first control module 21, a second control module 22, and a fault type determination module 23.

[0080] The first control module is used to control the opening of the gas valve.

[0081] The second control module is used to control the gas water heater to perform the ignition action.

[0082] During the ignition process, if the flame sensing device does not detect a flame within the first preset time period, the fault type determination module calculates the actual ignition heat generated within the first preset time period and determines the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat.

[0083] The standard ignition heat is the heat generated when the gas water heater ignites normally within the first preset time period. Because the national standard stipulates that a single ignition process can last up to 10 seconds, the first preset time period can be set to 10 seconds, and this embodiment does not impose any restrictions on this.

[0084] In one optional implementation, when the fault type determination module determines the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat, it is specifically used to: control the gas valve to close; determine whether the difference between the actual ignition heat and the standard ignition heat is greater than a first preset value and less than a second preset value; if so, control the gas valve to open again and control the gas water heater to perform the ignition action again; if the number of ignitions reaches the preset number, then determine the fault type as a flame sensing device fault.

[0085] Specifically, the preset number of times, the first preset value, and the second preset value can be set according to actual conditions, and this embodiment does not impose any restrictions on this. Because the difference between the actual ignition heat and the standard ignition heat is greater than the first preset value and less than the second preset value, it indicates that the flame produced after controlling the gas water heater to perform the ignition action is normal. If the flame is normal, but the flame sensing device does not detect the flame within the first preset time period, then the flame sensing device may be malfunctioning. Next, keeping the gas valve opening unchanged, repeat the above steps. If the gas water heater is continuously controlled to perform the ignition action a preset number of times, and the flame sensing device does not detect the flame within the first preset time period during the ignition process, and the difference between the actual ignition heat and the standard ignition heat is always greater than the first preset value and less than the second preset value, then it proves that the gas water heater can produce a flame normally, but the flame sensing device cannot detect the flame normally. The gas water heater malfunction can be resolved by replacing the flame sensing device.

[0086] In one optional implementation, when the fault type determination module determines the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat, it is specifically used to: control the gas valve to close; determine whether the difference between the actual ignition heat and the standard ignition heat is less than or equal to a first preset value; if so, control the gas valve to open again, and control the opening degree of the gas valve to increase, and control the gas valve to perform the ignition action again; if the opening degree of the gas valve reaches the preset opening degree, the fault type is determined to be a small flame or no flame fault.

[0087] Specifically, the first and second preset values ​​can be set according to actual conditions, and this embodiment does not limit this. The preset opening degree can be the maximum opening degree of the gas valve, and this embodiment does not limit this. Because the difference between the actual ignition heat and the standard ignition heat is less than or equal to the first preset value, it indicates that after the gas water heater performs the ignition action, the flame produced is too small or no flame is produced. Then, the opening degree of the gas valve is increased, and the above steps are repeated. If when the gas valve opening degree has reached the preset opening degree, the flame sensing device does not detect a flame within the first preset time during the ignition process, and the difference between the actual ignition heat and the standard ignition heat is always less than or equal to the first preset value, it proves that the gas water heater cannot produce a flame normally. This situation may be caused by the gas pipeline having almost no gas flow. Subsequently, the gas water heater malfunction is resolved by replacing the gas pipeline to ensure normal gas flow within the gas pipeline.

[0088] In one optional implementation, when the fault type determination module determines the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat, it is specifically used to: control the gas valve to close; determine whether the difference between the actual ignition heat and the standard ignition heat is greater than or equal to a second preset value; if so, control the gas valve to open again, control the opening degree of the gas valve to decrease, and control the gas valve to perform the ignition action again.

[0089] Specifically, the first and second preset values ​​can be set according to actual conditions, and this embodiment does not impose any restrictions on them. Because the difference between the actual ignition heat and the standard ignition heat is greater than or equal to the second preset value, it indicates that after the gas water heater performs the ignition action, a flame is generated, but the flame load is too high. Then, the opening of the gas valve is reduced, and the above steps are repeated until the difference between the actual ignition heat and the standard ignition heat is greater than the first preset value and less than the second preset value.

[0090] In one optional implementation, when the fault type determination module determines the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat, it is specifically used to: control the gas valve to close; and detect the difference between the actual ignition heat and the standard ignition heat.

[0091] If the difference between the actual ignition heat and the standard ignition heat is greater than the first preset value but less than the second preset value, the gas valve will be reopened and the gas water heater will be restarted to perform the ignition action. If the number of ignitions reaches the preset number, the fault type will be determined to be a flame sensing device fault.

[0092] If the difference between the actual ignition heat and the standard ignition heat is less than or equal to the first preset value, the gas valve is controlled to open again, and the opening degree of the gas valve is controlled to increase, and the gas valve is controlled to perform the ignition action again; if the opening degree of the gas valve reaches the preset opening degree, the fault type is determined to be a small flame or no flame fault.

[0093] If the difference between the actual ignition heat and the standard ignition heat is greater than or equal to the second preset value, the gas valve is controlled to open again, the opening degree of the gas valve is controlled to decrease, and the gas valve is controlled to perform the ignition action again.

[0094] In one optional implementation, the gas water heater further includes an inlet and an outlet. The fault type determination module is specifically used to calculate the actual ignition heat generated within the first preset time period based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period.

[0095] Because it takes time for water to be heated and reflected in the outlet temperature, and the inlet flow of a gas water heater is unstable, in order to ensure the practicality of the calculated actual ignition heat and reduce the deviation between the calculated actual ignition heat and the actual situation, the actual ignition heat is not calculated at a single moment, but rather within a first preset time period.

[0096] In one optional implementation, the fault type determination module, when calculating the actual ignition heat generated within the first preset time period based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period, specifically performs the following: within the first preset time period, every second preset time period, it detects the inlet flow rate, inlet temperature, and outlet temperature, and calculates the actual ignition heat based on the detected inlet flow rate, inlet temperature, and outlet temperature. The first preset time period is divisible by the second preset time period.

[0097] Specifically, the actual ignition heat can be calculated using the following formula:

[0098]

[0099] Where Qs represents the actual ignition heat, tc i tj represents the outlet water temperature at the i-th test.i q represents the inlet water temperature at the inlet during the i-th test. i The inlet flow rate is represented by Δt, the second preset duration is represented by Δt, and N is represented by the number of times the test is performed within the first preset duration. N = T / Δt, where T represents the first preset duration.

[0100] In one optional implementation, the fault type determination module, when calculating the actual ignition heat generated within the first preset time period based on the inlet flow rate, inlet temperature, and outlet temperature collected within that time period, specifically performs the following: within the first preset time period, it repeatedly detects the inlet flow rate, inlet temperature, and outlet temperature, and calculates the actual ignition heat based on the detected inlet flow rate, inlet temperature, and outlet temperature. Each detection yields a set of mutually matching inlet flow rate, inlet temperature, and outlet temperature; the interval between each detection is not fixed and can be the same or different; and the final detection is performed exactly at the end of the first preset time period.

[0101] Specifically, the actual ignition heat can be calculated using the following formula:

[0102]

[0103] Where Qs represents the actual ignition heat, tc i tj represents the outlet water temperature during the i-th test. i q represents the inlet water temperature at the inlet during the i-th test. i Δt represents the inlet flow rate at the inlet during the i-th test. i Δt represents the time interval between the i-th and (i-1)-th detections. When i = 1, Δt i Take the duration that has elapsed within the first preset time period during the first detection, where N represents the number of detections within the first preset time period.

[0104] In one alternative implementation, the control system further includes a heating module that, in response to a flame sensing device detecting a flame, controls the gas water heater to enter a heating mode.

[0105] This embodiment provides a control system for a gas water heater. The control system determines the fault type of the gas water heater during the ignition process based on the actual ignition heat and the preset standard ignition heat, making fault location more accurate. Users can know the specific fault type that caused the poor ignition problem, improving the user experience. It also makes it possible for the water heater to take corresponding measures for different fault types, improving the efficiency of solving poor ignition problems.

[0106] Example 3

[0107] Figure 4 This is a schematic diagram of a gas water heater according to Embodiment 3 of the present invention. It includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the control method for the gas water heater described in Embodiment 1. Figure 4 The gas water heater 30 shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0108] The gas water heater 30 can be represented as a general-purpose computing device, such as a server device. The components of the gas water heater 30 may include, but are not limited to: at least one processor 31, at least one memory 32, and a bus 33 connecting different system components (including memory 32 and processor 31).

[0109] Bus 33 includes a data bus, an address bus, and a control bus.

[0110] The memory 32 may include volatile memory, such as random access memory (RAM) 321 and / or cache memory 322, and may further include read-only memory (ROM) 323.

[0111] The memory 32 may also include a program / utility 325 having a set (at least one) of program modules 324, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0112] The processor 31 executes various functional applications and data processing by running computer programs stored in the memory 32, such as the control method for a gas water heater in Embodiment 1 of the present invention.

[0113] The gas water heater 30 can also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). This communication can be performed via input / output (I / O) interface 35. Furthermore, the model-generated water purifier 30 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 36. As shown in the figure, network adapter 36 communicates with other modules of the model-generated water purifier 30 via bus 33. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated water purifier 30, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0114] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0115] Example 4

[0116] The present invention also provides a computer-readable medium having a computer program stored thereon, which, when executed by a processor, implements the control method for a gas water heater of the aforementioned embodiment 1.

[0117] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0118] In a possible implementation, the present invention can also be implemented as a program product comprising program code, which, when the program product is run on a terminal device, causes the terminal device to execute the control method for the gas water heater of Embodiment 1.

[0119] The program code for executing the present invention can be written in any combination of one or more programming languages. The program code can be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on a remote device.

[0120] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A control method for a gas water heater, characterized in that, The gas water heater includes a gas valve and a flame sensing device, and the control method includes: Control the gas valve to open; Control the gas water heater to perform the ignition action; During the ignition process, if the flame sensing device does not detect a flame within a first preset time period, the actual ignition heat generated within the first preset time period is calculated, and the fault type of the gas water heater is determined based on the actual ignition heat and the preset standard ignition heat; the standard ignition heat is the heat generated by the gas water heater when it is normally ignited within the first preset time period. The step of determining the fault type of the gas water heater based on the actual ignition heat and the preset standard ignition heat specifically includes: Control the gas valve to close; If the difference between the actual ignition heat and the standard ignition heat is greater than a first preset value and less than a second preset value, the gas valve is controlled to open again, and the gas water heater is controlled to perform the ignition action again; if the number of ignitions reaches a preset number, the fault type is determined to be a flame sensing device fault. If the difference between the actual ignition heat and the standard ignition heat is less than or equal to the first preset value, then the gas valve is controlled to open again, and the opening degree of the gas valve is controlled to increase, and the gas valve is controlled to perform the ignition action again; if the opening degree of the gas valve reaches the preset opening degree, then the fault type is determined to be a small flame or no flame fault. If the difference between the actual ignition heat and the standard ignition heat is greater than or equal to the second preset value, then the gas valve is controlled to open again, the opening degree of the gas valve is controlled to decrease, and the gas valve is controlled to perform the ignition action again.

2. The control method for a gas water heater as described in claim 1, characterized in that, The gas water heater further includes an inlet and an outlet, and the step of calculating the actual ignition heat generated within the first preset time period specifically includes: The actual ignition heat generated within the first preset time period is calculated based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period.

3. The control method for a gas water heater as described in claim 2, characterized in that, The step of calculating the actual ignition heat generated within the first preset time period based on the inlet flow rate, inlet temperature, and outlet temperature collected within the first preset time period specifically includes: Within the first preset time period, the inlet flow rate, the inlet temperature, and the outlet temperature are detected once every second preset time period. The actual ignition heat is calculated based on the detected inlet flow rate, inlet temperature, and outlet temperature.

4. The control method for a gas water heater as described in claim 2, characterized in that, The control method further includes: If the flame sensor detects a flame, it controls the gas water heater to enter heating mode.

5. A control system for ignition failure in a gas water heater, characterized in that, The gas water heater includes a gas valve and a flame sensor, and the control system includes: The first control module is used to control the gas valve to open; The second control module is used to control the gas water heater to perform the ignition action; The fault type determination module is used to calculate the actual ignition heat generated within the first preset time period during the ignition process if the flame sensing device does not detect a flame. The module then determines the fault type of the gas water heater based on the actual ignition heat and a preset standard ignition heat. The standard ignition heat is the heat generated by the gas water heater during normal ignition within the first preset time period. The fault type determination module is specifically used for: Control the gas valve to close; If the difference between the actual ignition heat and the standard ignition heat is greater than a first preset value and less than a second preset value, the gas valve is controlled to open again, and the gas water heater is controlled to perform the ignition action again; if the number of ignitions reaches a preset number, the fault type is determined to be a flame sensing device fault. If the difference between the actual ignition heat and the standard ignition heat is less than or equal to the first preset value, then the gas valve is controlled to open again, and the opening degree of the gas valve is controlled to increase, and the gas valve is controlled to perform the ignition action again; if the opening degree of the gas valve reaches the preset opening degree, then the fault type is determined to be a small flame or no flame fault. If the difference between the actual ignition heat and the standard ignition heat is greater than or equal to the second preset value, then the gas valve is controlled to open again, the opening degree of the gas valve is controlled to decrease, and the gas valve is controlled to perform the ignition action again.

6. A gas water heater, comprising a memory, a processor, and a computer program stored in the memory and used to run on the processor, characterized in that, When the processor executes the computer program, it implements the control method for the gas water heater as described in any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the control method for the gas water heater as described in any one of claims 1 to 4.

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