Gas water heater exhaust water control method, system, device and storage medium

Abstract

The application discloses a kind of gas water heater residual water control method, system, equipment and storage medium, control method includes: obtaining the residual water times of gas water heater and the non-use time of gas water heater;According to residual water times and non-use time control gas water heater discharge residual water and / or water vapor.The application is in non-use state when gas water heater, according to the residual water times of obtained gas water heater and the non-use time of gas water heater control gas water heater discharge residual water and / or water vapor, residual water and / or water vapor in the pipeline of gas water heater can be discharged in time, ensure that there is no residual water and water vapor in pipeline under the condition that gas water heater is not used for a long time, avoid pipeline being corroded, improve the use safety of gas water heater.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas water heater control, and in particular to a gas water heater residual water control method, system, device and storage medium. BACKGROUND

[0002] If the residual water in the gas water heater is not drained when the gas water heater is not used for a long time, the heating circuit will be slowly corroded, causing the performance of the machine to decline and even causing safety hazards. If such water comes into contact with human skin, unexpected safety problems may occur. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the defects in the prior art that the residual water in the gas water heater is not drained in time when the gas water heater is not used for a long time, which causes the heating circuit to be corroded and safety hazards to occur. The present application provides a gas water heater residual water control method, system, device and storage medium.

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

[0005] The present application provides a gas water heater residual water control method in the first aspect, which comprises:

[0006] Obtaining the residual water draining frequency of the gas water heater and the non-use time of the gas water heater;

[0007] Controlling the gas water heater to drain residual water and / or water vapor according to the residual water draining frequency and the non-use time.

[0008] Preferably, the gas water heater comprises a first electromagnetic valve, a second electromagnetic valve and a blower, and the step of controlling the gas water heater to drain residual water and / or water vapor according to the residual water draining frequency and the non-use time comprises:

[0009] If the residual water draining frequency is less than a preset residual water draining frequency, it is determined whether the non-use time is greater than a preset non-use time. If so, the first electromagnetic valve is controlled to be opened for a preset opening time and then closed to drain the residual water in the pipeline of the gas water heater.

[0010] Preferably, the step of controlling the gas water heater to drain residual water and / or water vapor according to the residual water draining frequency and the non-use time further comprises:

[0011] If it is determined that the residual water draining frequency is not less than the preset residual water draining frequency, the first electromagnetic valve and the blower are both controlled to be opened, and the second electromagnetic valve is controlled to be closed.

[0012] controlling the gas water heater to stop burning after the gas water heater burns for a preset burning time, so as to discharge residual water and water vapor in pipelines of the gas water heater;

[0013] controlling the first electromagnetic valve, the air blower and the second electromagnetic valve to be closed after the gas water heater stops burning for a preset time.

[0014] Preferably, before the steps of acquiring the residual water discharging frequency of the gas water heater and the non-use time of the gas water heater, the control method further comprises:

[0015] acquiring the water flow of the gas water heater;

[0016] determining whether the water flow is less than a preset water flow, if yes, determining that the gas water heater is in a non-use state, and if no, determining that the gas water heater is in a use state.

[0017] The second aspect of the present application provides a control system for discharging residual water of a gas water heater, the control system comprising a first acquisition module and a control module;

[0018] the first acquisition module is configured to acquire the residual water discharging frequency of the gas water heater and the non-use time of the gas water heater;

[0019] the control module is configured to control the gas water heater to discharge residual water and / or water vapor according to the residual water discharging frequency and the non-use time.

[0020] Preferably, the gas water heater comprises a first electromagnetic valve, a second electromagnetic valve and an air blower, and the control module comprises a first judgment unit, a second judgment unit and a first control unit.

[0021] the first judgment unit is configured to determine whether the residual water discharging frequency is less than a preset residual water discharging frequency, and if yes, call the second judgment unit;

[0022] the second judgment unit is configured to determine whether the non-use time is greater than a preset non-use time, and if yes, call the first control unit;

[0023] the first control unit is configured to control the first electromagnetic valve to be opened for a preset opening time and then closed, so as to discharge residual water in pipelines of the gas water heater.

[0024] Preferably, the control module further comprises a second control unit, a third control unit and a fourth control unit.

[0025] the second control unit is configured to control the first electromagnetic valve and the air blower to be opened and the second electromagnetic valve to be closed if it is determined that the residual water discharging frequency is not less than the preset residual water discharging frequency.

[0026] The third control unit is configured to control the gas water heater to stop burning after burning for a preset burning time, so as to discharge residual water and water vapor in a pipeline of the gas water heater.

[0027] The fourth control unit is configured to control the first electromagnetic valve, the air blower and the second electromagnetic valve to be closed after the gas water heater stops burning for a preset time.

[0028] Preferably, the control system further comprises a second acquisition module, a judgment module, a first determination module and a second determination module.

[0029] The second acquisition module is configured to acquire a water outlet flow of the gas water heater.

[0030] The judgment module is configured to judge whether the water outlet flow is less than a preset water outlet flow, if yes, the first determination module is called, and if no, the second determination module is called.

[0031] The first determination module is configured to determine that the gas water heater is in a non-use state.

[0032] The second determination module is configured to determine that the gas water heater is in a use state.

[0033] The third aspect of the present application provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and used for running on the processor, and the processor executes the computer program to realize the control method for discharging residual water of the gas water heater according to the first aspect.

[0034] The fourth aspect of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the control method for discharging residual water of the gas water heater according to the first aspect.

[0035] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, each preferred example of the present application is obtained.

[0036] The positive progress effect of the present application is that:

[0037] The present application can discharge residual water and / or water vapor in the pipeline of the gas water heater in time, and ensure that there is no residual water and water vapor in the pipeline when the gas water heater is not used for a long time, so as to avoid corrosion of the pipeline and improve the use safety of the gas water heater. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The first flow chart of the control method for the residual water of the gas water heater according to Embodiment 1 of the present application.

[0039] Figure 2 The structural schematic diagram of the gas water heater according to Embodiments 1 and 2 of the present application.

[0040] Figure 3 The flow chart of step 102 of the control method for the residual water of the gas water heater according to Embodiment 1 of the present application.

[0041] Figure 4 The second flow chart of the control method for the residual water of the gas water heater according to Embodiment 1 of the present application.

[0042] Figure 5 The module schematic diagram of the control system for the residual water of the gas water heater according to Embodiment 2 of the present application.

[0043] Figure 6 The structural schematic diagram of the electronic device for implementing the control method for the residual water of the gas water heater according to Embodiment 3 of the present application. DETAILED DESCRIPTION

[0044] The present application will be further described in the following embodiments, but the present application is not limited in the scope of the embodiments.

[0045] Embodiment 1

[0046] The control method for the residual water of the gas water heater provided in the present embodiment, as shown in the figure, comprises: Figure 1

[0047] Step 101, obtaining the residual water times of the gas water heater and the non-use time of the gas water heater;

[0048] In the present embodiment, when the gas water heater is in the non-use state, the non-use state timing is started, and the residual water times of the gas water heater are counted.

[0049] Step 102, controlling the residual water and / or water vapor of the gas water heater according to the residual water times and the non-use time.

[0050] In the present embodiment, according to the non-use time and the residual water times of the gas water heater, it is determined when to perform the residual water emptying treatment in the internal pipeline.

[0051] As an optional embodiment, as shown in the figure, Figure 2 ​As shown, the gas water heater comprises a first electromagnetic valve 1, a second electromagnetic valve 2, a blower 3, a heat exchanger 4, a combustion chamber 5, a proportional valve 6, a flow meter 7 and a fan 8, it should be noted that the first electromagnetic valve 1 is communicated with the waste water outlet, the first electromagnetic valve 1 is usually a normally closed electromagnetic valve, the second electromagnetic valve 2 is communicated with the water inlet, the second electromagnetic valve 2 is usually a normally open electromagnetic valve, such as Figure 3 As shown, step 102 comprises:

[0052] Step 1021, judge whether the residual water discharge frequency is less than the preset residual water discharge frequency, if yes, execute step 1022; if no, execute step 1024;

[0053] In this embodiment, the preset residual water discharge frequency is set according to the actual situation, for example, the preset residual water discharge frequency can be set to 4 times, or other values, which are not limited here.

[0054] Step 1022, judge whether the non-use time is greater than the preset non-use time, if yes, execute step 1023; if no, end;

[0055] In this embodiment, the preset non-use time is set according to the actual situation, for example, the preset non-use time can be set to 5 days, or other values, which are not limited here.

[0056] Step 1023, control the first electromagnetic valve to open for a preset opening time, and then close the first electromagnetic valve to discharge the residual water in the pipeline of the gas water heater.

[0057] In this embodiment, the first electromagnetic valve is controlled to open and count down the preset opening time, and the non-use time and the residual water discharge frequency are cleared, when the first electromagnetic valve opening countdown reaches the preset opening time, the first electromagnetic valve is closed to discharge the residual water in the pipeline of the gas water heater.

[0058] It should be noted that the preset opening time is set according to the actual situation, for example, the preset opening time can be set to 10 seconds, or other values, which are not limited here.

[0059] Step 1024, control the first electromagnetic valve and the blower to open and the second electromagnetic valve to close;

[0060] Step 1025, control the gas water heater to burn for a preset burning time, and then control the gas water heater to stop burning to discharge the residual water and water vapor in the pipeline of the gas water heater;

[0061] In this embodiment, the preset burning time is set according to the actual situation, for example, the preset burning time can be set to 10 seconds, or other values, which are not limited here.

[0062] It should be noted that the gas water heater is usually controlled to burn at minimum load for a preset burning time to make the water removal more sufficient by heating, and the gas water heater is controlled to stop burning after burning for the preset burning time to remove the residual water and water vapor in the pipeline of the gas water heater by cooling the machine.

[0063] Step 1026, after the gas water heater stops burning for a preset time, the first electromagnetic valve, the blower and the second electromagnetic valve are all closed.

[0064] In this embodiment, after the gas water heater stops burning for a preset time, all loads of the gas water heater are closed, and the first electromagnetic valve, the blower and the second electromagnetic valve are all kept closed.

[0065] It should be noted that the second electromagnetic valve is kept closed to block the water from entering the internal pipeline of the gas water heater when the gas water heater is not used.

[0066] In addition, the preset time is set according to actual conditions, for example, the preset time can be set to 1 minute, or other values, which are not limited here.

[0067] In the specific implementation process, if it is judged that the residual water removal frequency is less than the preset residual water removal frequency, and the non-use time is greater than the preset non-use time, it indicates that the gas water heater is in a short or medium period of non-use state, at this time, only the first electromagnetic valve needs to be controlled to be opened for a preset opening time and then closed to remove the residual water in the pipeline of the gas water heater, and in addition, the second electromagnetic valve is kept in an opened state during the residual water removal of the gas water heater in the short or medium period of non-use.

[0068] If it is judged that the residual water removal frequency is not less than the preset residual water removal frequency, it indicates that the gas water heater is in a long period of non-use state, at this time, the first electromagnetic valve and the blower need to be controlled to be opened and the second electromagnetic valve needs to be closed, the gas water heater is controlled to burn at minimum load for a preset burning time to remove the residual water and water vapor in the pipeline of the gas water heater, and after the gas water heater stops burning for a preset time, all loads of the gas water heater are closed, and the first electromagnetic valve, the blower and the second electromagnetic valve are all kept closed, which can keep the gas water heater dry while removing the residual water in the pipeline, and also block the water from entering the internal pipeline of the gas water heater when the gas water heater is not used.

[0069] As an optional embodiment, as shown in Figure 4 Before step 101, the control method further includes:

[0070] Step 100, obtaining the water flow of the gas water heater;

[0071] Step 100-1, determining whether the water flow is less than the preset water flow, if yes, executing step 100-2, and then executing step 101; if no, executing step 100-3;

[0072] Step 100-2, determining that the gas water heater is in a non-use state;

[0073] Step 100-3, determining that the gas water heater is in a use state, and clearing all the time (for example, non-use time, first electromagnetic valve opening time, gas water heater combustion time, and gas water heater stop combustion time) and count value (for example, residual water discharge frequency).

[0074] In the specific implementation process, before the residual water control of the gas water heater is performed, it is determined whether the gas water heater is in a start state, if yes, executing step 100; if no, determining whether the gas water heater needs to be started, if yes, controlling the gas water heater to start, and opening the second electromagnetic valve to make the gas water heater work normally, and ensuring that the user water is prioritized; if the gas water heater does not need to be started, ending.

[0075] In the embodiment, through the active residual water measure, it is ensured that the user water is "live water", and the internal pipeline is not corroded in the case that the gas water heater is not used for a long time.

[0076] The embodiment can control the gas water heater to discharge residual water and / or water vapor according to the obtained residual water discharge frequency of the gas water heater and the non-use time of the gas water heater when the gas water heater is in a non-use state, can timely discharge the residual water and / or water vapor in the pipeline of the gas water heater, ensures that there is no residual water and water vapor in the pipeline in the case that the gas water heater is not used for a long time, avoids the pipeline from being corroded, and improves the use safety of the gas water heater.

[0077] Embodiment 2

[0078] The control system for discharging residual water of the gas water heater provided in the embodiment, as shown in Figure 5 the control system includes a first acquisition module 21 and a control module 22;

[0079] The first acquisition module 21 is used to acquire the residual water discharge frequency of the gas water heater and the non-use time of the gas water heater;

[0080] In the embodiment, when the gas water heater is in a non-use state, the non-use state timing is started, and the residual water discharge frequency of the gas water heater is counted.

[0081] The control module 22 is used to control the gas water heater to discharge residual water and / or water vapor according to the residual water discharge frequency and the non-use time.

[0082] In this embodiment, it is determined when to perform the residual water emptying treatment in the internal pipeline according to the non-use time of the gas water heater and the residual water discharge frequency.

[0083] As an optional implementation, as shown in Figure 2 The gas water heater includes a first electromagnetic valve 1, a second electromagnetic valve 2, a blower 3, a heat exchanger 4, a combustion chamber 5, a proportional valve 6, a flow meter 7, and a fan 8. It should be noted that the first electromagnetic valve 1 is in communication with the waste water outlet, and the first electromagnetic valve 1 is usually a normally closed electromagnetic valve. The second electromagnetic valve 2 is in communication with the water inlet, and the second electromagnetic valve 2 is usually a normally open electromagnetic valve, as shown in Figure 5 The control module 22 includes a first judgment unit 221, a second judgment unit 222, and a first control unit 223.

[0084] The first judgment unit 221 is configured to determine whether the residual water discharge frequency is less than a preset residual water discharge frequency. If yes, the second judgment unit 222 is called.

[0085] In this embodiment, the preset residual water discharge frequency is set according to actual conditions. For example, the preset residual water discharge frequency can be set to 4 times, or other values, which are not limited here.

[0086] The second judgment unit 222 is configured to determine whether the non-use time is greater than a preset non-use time. If yes, the first control unit 223 is called.

[0087] In this embodiment, the preset non-use time is set according to actual conditions. For example, the preset non-use time can be set to 5 days, or other values, which are not limited here.

[0088] The first control unit 223 is configured to control the first electromagnetic valve to be opened for a preset opening time, and then closed to discharge the residual water in the pipeline of the gas water heater.

[0089] In this embodiment, the first electromagnetic valve is controlled to be opened and counted down for a preset opening time, and the non-use time and the residual water discharge frequency are cleared. When the first electromagnetic valve is opened and counted down to the preset opening time, the first electromagnetic valve is closed to discharge the residual water in the pipeline of the gas water heater.

[0090] It should be noted that the preset opening time is set according to actual conditions. For example, the preset opening time can be set to 10 seconds, or other values, which are not limited here.

[0091] As an optional implementation, as shown in Figure 5 The control module 22 further includes a second control unit 224, a third control unit 225, and a fourth control unit 226.

[0092] The second control unit 224 is configured to control the first electromagnetic valve and the air blower to be opened and the second electromagnetic valve to be closed if it is determined that the number of times of residual water discharge is not less than the preset number of times of residual water discharge.

[0093] The third control unit 225 is configured to control the gas water heater to stop burning after burning for a preset burning time, so as to discharge the residual water and water vapor in the pipeline of the gas water heater.

[0094] In the embodiment, the preset burning time is set according to actual conditions. For example, the preset burning time can be set to 10 seconds, or can be set to other values, which are not limited here.

[0095] It should be noted that, generally, the gas water heater is controlled to burn at the minimum load for the preset burning time, so as to make the water discharge more sufficient by heating. After the gas water heater burns for the preset burning time, the gas water heater is controlled to stop burning, so as to discharge the residual water and water vapor in the pipeline of the gas water heater by cooling the machine.

[0096] The fourth control unit 226 is configured to control the first electromagnetic valve, the air blower and the second electromagnetic valve to be closed after the gas water heater stops burning for a preset time.

[0097] In the embodiment, after the gas water heater stops burning for the preset time, all loads of the gas water heater are closed, and the first electromagnetic valve, the air blower and the second electromagnetic valve are kept closed.

[0098] It should be noted that, the second electromagnetic valve is kept closed, so as to block the water from entering the internal pipeline of the gas water heater when the gas water heater is not used.

[0099] In addition, the preset time is set according to actual conditions. For example, the preset time can be set to 1 minute, or can be set to other values, which are not limited here.

[0100] In the specific implementation process, if it is determined that the number of times of residual water discharge is less than the preset number of times of residual water discharge, and the non-use time is greater than the preset non-use time, it indicates that the gas water heater is in a short or medium period of non-use. At this time, only the first electromagnetic valve needs to be controlled to be opened for a preset opening time and then closed, so as to discharge the residual water in the pipeline of the gas water heater. In addition, during the residual water discharge period of the gas water heater in the short or medium period of non-use, the second electromagnetic valve is kept in an opened state.

[0101] If it is judged that the number of times of residual water discharge is not less than the preset number of times of residual water discharge, it is indicated that the gas water heater is in a long-term non-use state, at this time, the first electromagnetic valve and the air blower are both controlled to be opened and the second electromagnetic valve is controlled to be closed; the gas water heater is controlled to burn at the minimum load for a preset combustion time, and then the gas water heater is controlled to stop burning, so as to discharge the residual water and water vapor in the pipeline of the gas water heater; after the gas water heater stops burning for a preset time, all loads of the gas water heater are closed, and the first electromagnetic valve, the air blower and the second electromagnetic valve are all closed; the residual water in the pipeline can be discharged, the gas water heater can be kept dry, and water can be blocked from entering the internal pipeline of the gas water heater when the gas water heater is not used.

[0102] As an optional implementation, as shown in Figure 5 The control system further includes a second acquisition module 23, a judgment module 24, a first determination module 25 and a second determination module 26.

[0103] The second acquisition module 23 is configured to acquire the water outlet flow of the gas water heater.

[0104] The judgment module 24 is configured to judge whether the water outlet flow is less than a preset water outlet flow, if yes, the first determination module 25 is called; if no, the second determination module 26 is called.

[0105] The first determination module 25 is configured to determine that the gas water heater is in a non-use state.

[0106] The second determination module 26 is configured to determine that the gas water heater is in a use state, and clear all timing (for example, non-use time, first electromagnetic valve opening time, gas water heater combustion time and gas water heater stop combustion time) and count value (for example, number of times of residual water discharge).

[0107] In the specific implementation process, before the residual water discharge control of the gas water heater is performed, it is first judged whether the gas water heater is in a start-up state, if yes, the second acquisition module 23 is called; if no, it is judged whether the gas water heater needs to be started up, if yes, the gas water heater is controlled to be started up, and the second electromagnetic valve is opened, so that the gas water heater works normally and ensures that the user's water use is prioritized; if the gas water heater does not need to be started up, the process is ended.

[0108] In this embodiment, through the active residual water discharge measure, it is ensured that the user's water use is "live water", and the internal pipeline is not corroded in the case that the gas water heater is not used for a long time.

[0109] The embodiment can control the gas water heater to discharge residual water and / or steam according to the obtained residual water discharge times of the gas water heater and non-use time of the gas water heater when the gas water heater is in a non-use state, can timely discharge the residual water and / or steam in the pipeline of the gas water heater, ensures that there is no residual water and steam in the pipeline in the case that the gas water heater is not used for a long time, avoids the pipeline from being corroded, and improves the use safety of the gas water heater.

[0110] Embodiment 3

[0111] Figure 6 A structural schematic diagram of an electronic device provided for the embodiment 3 of the present application is shown. The electronic device includes a memory, a processor and a computer program stored in the memory and used for running on the processor, and the processor implements the control method of the gas water heater residual water discharge of the embodiment 1 when executing the program. Figure 6 The electronic device 30 shown is merely an example and should not bring any limitation to the function and use range of the embodiment of the present application.

[0112] As shown in Figure 6 The electronic device 30 can be in the form of a general computing device, for example, it can be a server device. The components of the electronic device 30 can include but are not limited to the above-mentioned at least one processor 31, the above-mentioned at least one memory 32, a bus 33 connecting different system components including the memory 32 and the processor 31.

[0113] The bus 33 includes a data bus, an address bus and a control bus.

[0114] The memory 32 can include a volatile memory, for example, a random access memory (RAM) 321 and / or a cache memory 322, and can further include a read-only memory (ROM) 323.

[0115] The memory 32 can further include a program / utility 325 having a set of (at least one) program modules 324, such as an operating system, one or more application programs, other program modules, and program data, and each of these examples, or some combination thereof, can include implementation of a network environment.

[0116] The processor 31 performs various function applications and data processing by running the computer program stored in the memory 32, for example, the control method of the gas water heater residual water discharge of the embodiment 1 of the present application.

[0117] The electronic device 30 can also communicate with one or more external devices 34 such as a keyboard, a pointing device, etc.; such communication can occur through Input / Output (I / O) interface(s) 35. Additionally, the model generation device 30 can communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or the public network, such as the Internet) through network adapter 36. As Figure 6 illustrated, network adapter 36 communicates with the other modules of the model generation device 30 through bus 33. It should be appreciated that although not shown, other hardware and / or software modules could be used in conjunction with the model generation device 30. For example, microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data archival storage systems, etc. can be used in conjunction with the model generation device 30.

[0118] It should be noted that although several units / modules or sub-units / modules of an electronic device are mentioned in the foregoing detailed description, such a division is merely exemplary and not mandatory. Indeed, according to an embodiment of the application, the features and functionalities of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functionalities of one unit / module described above can be further divided into several units / modules embodied by several units / modules.

[0119] Embodiment 4

[0120] The embodiment provides a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the control method for residual water of a gas water heater provided in the embodiment 1.

[0121] In which, the readable storage medium can adopt more specific can include 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 of the above.

[0122] In possible implementation manners, the present application can also be implemented in the form of a program product, which includes program code for causing a terminal device to execute the control method for residual water of a gas water heater described in the embodiment 1 when the program product is run on the terminal device.

[0123] In which, the program code for executing the present application can be written in any combination of one or more programming languages, and the program code can be executed entirely on the user device, partially on the user device, as a separate software package, partially on the user device and partially on a remote device, or entirely on a remote device.

[0124] Although the specific embodiments of the present application have been described above, it is understood by those skilled in the art that the present application is only illustrated by way of example, and the scope of protection of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the scope of protection of the present application.

Claims

1. A control method of residual water of a gas water heater, characterized by, The control method comprises: acquiring the residual water frequency of the gas water heater and the non-use time of the gas water heater; controlling the gas water heater to discharge residual water and / or water vapor according to the residual water frequency and the non-use time; The gas water heater comprises a first electromagnetic valve, a second electromagnetic valve and a blower, and the step of controlling the gas water heater to discharge residual water and / or water vapor according to the residual water frequency and the non-use time comprises: determining whether the residual water frequency is less than a preset residual water frequency, and if so, determining whether the non-use time is greater than a preset non-use time, and if so, controlling the first electromagnetic valve to be opened for a preset opening time and then closed to discharge residual water in the pipeline of the gas water heater.

2. The control method of claim 1, wherein, The step of controlling the gas water heater to discharge residual water and / or water vapor according to the residual water frequency and the non-use time further comprises: if it is determined that the residual water frequency is not less than the preset residual water frequency, controlling the first electromagnetic valve and the blower to be both opened and the second electromagnetic valve to be closed; controlling the gas water heater to burn for a preset burning time and then stop burning to discharge residual water and water vapor in the pipeline of the gas water heater; controlling the first electromagnetic valve, the blower and the second electromagnetic valve to be all closed after the gas water heater stops burning for a preset time.

3. The control method of claim 1, wherein the predetermined temperature is 60°C. Before the step of acquiring the residual water frequency of the gas water heater and the non-use time of the gas water heater, the control method further comprises: acquiring the water flow of the gas water heater; determining whether the water flow is less than a preset water flow, and if so, determining that the gas water heater is in a non-use state, and if not, determining that the gas water heater is in a use state.

4. A control system for the discharge of residual water from a gas water heater, characterised in that, The control system comprises a first acquisition module and a control module; The first acquisition module is configured to acquire the residual water frequency of the gas water heater and the non-use time of the gas water heater; The control module is configured to control the gas water heater to discharge residual water and / or water vapor according to the residual water frequency and the non-use time; The gas water heater comprises a first electromagnetic valve, a second electromagnetic valve and a blower, and the control module comprises a first judgment unit, a second judgment unit and a first control unit; The first judgment unit is configured to determine whether the residual water frequency is less than a preset residual water frequency, and if so, call the second judgment unit; The second judgment unit is configured to determine whether the non-use time is greater than a preset non-use time, and if so, call the first control unit; The first control unit is configured to control the first electromagnetic valve to be opened for a preset opening time and then closed to discharge residual water in the pipeline of the gas water heater.

5. The control system for draining the water from the gas water heater according to claim 4, wherein, The control module further comprises a second control unit, a third control unit and a fourth control unit; The second control unit is configured to, if it is determined that the residual water frequency is not less than the preset residual water frequency, control the first electromagnetic valve and the blower to be both opened and the second electromagnetic valve to be closed; The third control unit is configured to control the gas water heater to burn for a preset burning time and then stop burning to discharge residual water and water vapor in the pipeline of the gas water heater; and The fourth control unit is configured to control the first electromagnetic valve, the blower and the second electromagnetic valve to be all closed after the gas water heater stops burning for a preset time. The third control unit is configured to control the gas water heater to stop burning after burning for a preset burning time, so as to discharge residual water and water vapor in a pipeline of the gas water heater. The fourth control unit is configured to control the first electromagnetic valve, the air blower and the second electromagnetic valve to be closed after the gas water heater stops burning for a preset time.

6. The control system for draining the water from the gas water heater according to claim 4, wherein, The control system further comprises a second acquisition module, a judgment module, a first determination module and a second determination module. The second acquisition module is configured to acquire a water outlet flow of the gas water heater. The judgment module is configured to judge whether the water outlet flow is less than a preset water outlet flow, if yes, the first determination module is called; if no, the second determination module is called; The first determination module is configured to determine that the gas water heater is in a non-use state. The second determination module is configured to determine that the gas water heater is in a use state.

7. 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 executes the computer program to realize the control method for discharging residual water of the gas water heater according to any one of claims 1-3.

8. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to realize the control method for discharging residual water of the gas water heater according to any one of claims 1-3.

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