Gas water heater control method, gas water heater, storage medium, and computer program

Abstract

The present application discloses a gas water heater control method, a gas water heater, and a storage medium. The method comprises: on the basis of a preset control parameter, controlling a fan of a gas water heater to operate and measuring an actual rotating speed of the fan, and acquiring a cold / hot state of the gas water heater; on the basis of the actual rotating speed and the cold / hot state, determining a target correspondence between the rotating speed of the fan and the control parameter; and measuring the current rotating speed of the fan, and on the basis of the current rotating speed and the target correspondence, controlling the fan to operate.

Description

Control method of gas water heater, gas water heater, storage medium and computer program

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 14, 2023, with application number 202311020601.4 and invention name “Control method for gas water heater, gas water heater and storage medium”, the entire contents of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the technical field of water heaters, and in particular to a control method for a gas water heater, a gas water heater, and a storage medium. Background Art

[0003] During the operation of a gas water heater, the gas flow rate is controlled to supply the gas combustion heat required to produce hot water. For gas water heaters equipped with a fan, the fan generally runs at a speed that matches the gas flow rate. Technical issues

[0004] The main purpose of this application is to provide a control method for a gas water heater, a gas water heater and a storage medium, aiming to ensure that the water heater maintains a good combustion state and improves safety of use. Technical Solutions

[0005] To achieve the above objectives, the present application provides a method for controlling a gas water heater, the method comprising the following steps:

[0006] Controlling the operation of the fan in the gas water heater according to preset control parameters and detecting the actual speed of the fan to obtain the hot or cold state of the gas water heater;

[0007] Determining a target correspondence between the speed of the fan and a control parameter according to the actual speed and the hot and cold states;

[0008] The current rotation speed of the fan is detected, and the operation of the fan is controlled according to the corresponding relationship between the current rotation speed and the target.

[0009] In one embodiment, the step of determining a target correspondence between the speed of the fan and a control parameter according to the actual speed and the hot / cold state includes:

[0010] Acquiring a preset correspondence relationship, wherein the preset correspondence relationship includes a correspondence relationship between at least two preset rotational speeds of the fan and a control parameter of the fan;

[0011] The preset speed in the preset correspondence is corrected according to the actual speed and the hot / cold state to obtain the target correspondence.

[0012] In one embodiment, the step of correcting the preset speed in the preset correspondence according to the actual speed and the hot / cold state to obtain the target correspondence includes:

[0013] Determining a difference between the actual speed and a reference speed corresponding to the preset control parameter;

[0014] determining a rotation speed correction value according to the difference and the hot and cold states;

[0015] The preset speed in the preset correspondence is corrected according to the speed correction value to obtain the target correspondence.

[0016] In one embodiment, the step of determining the rotation speed correction value according to the hot and cold states and the difference comprises:

[0017] When the hot and cold state is the hot state, determining the difference as the rotation speed correction value;

[0018] When the hot and cold state is a cold state, the difference is increased according to a preset speed correction value to obtain the speed correction value.

[0019] In one embodiment, before the step of controlling the operation of the fan in the gas water heater according to preset control parameters and detecting the actual speed of the fan to obtain the hot or cold state of the gas water heater, the method further includes:

[0020] The gas water heater is controlled to perform a preheating operation.

[0021] In one embodiment, the step of obtaining the hot or cold state of the gas water heater includes:

[0022] When the operation time of the preheating operation is not less than the preset time, determining that the hot and cold state is the hot state;

[0023] When the operation time of the preheating operation is less than the preset time, it is determined that the hot / cold state is the cold state.

[0024] In one embodiment, the target correspondence includes a correspondence between at least two preset speeds and control parameters of the fan, and the step of controlling the operation of the fan according to the current speed and the target correspondence includes:

[0025] Based on the target correspondence, determining a target control parameter of the fan according to a relationship between the current speed and the preset speed;

[0026] The operation of the fan is controlled according to the target control parameter.

[0027] In one embodiment, the at least two preset speeds include a first preset speed and a second preset speed, and the step of determining the target control parameter of the fan according to the relationship between the current speed and the preset speeds includes:

[0028] When the current speed is less than the first preset speed, determining the preset control parameter as the target control parameter;

[0029] When the current speed is greater than the second preset speed, determining that the fan is stopped is the target control parameter;

[0030] When the current speed is not less than the first preset speed and not greater than the second preset speed, increasing the preset control parameter to obtain the target control parameter;

[0031] Wherein, the first preset speed is smaller than the second preset speed.

[0032] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a gas water heater, which includes a control device and a fan connected to the control device. The control device includes: a memory, a processor, and a control program for the gas water heater stored on the memory and runnable on the processor. When the control program of the gas water heater is executed by the processor, the steps of the gas water heater control method as described in any one of the above items are implemented.

[0033] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a control program of a gas water heater is stored. When the control program of the gas water heater is executed by a processor, the steps of the control method of the gas water heater as described in any of the above items are implemented.

[0034] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a computer program, which includes instructions. When the instructions are run by the gas water heater, the gas water heater executes the steps of the gas water heater control method as described in any one of the above items. Beneficial effects

[0035] The present application proposes a control method for a water heater. The method first establishes a target correspondence between the fan speed and the control parameters based on the actual speed of the gas water heater fan when it is controlled according to preset control parameters and the corresponding hot and cold states of the water heater. The established target correspondence can accurately reflect the control parameters required to achieve the target air volume when the fan speed changes due to changes in wind resistance. Based on this, in the subsequent operation of the fan, the fan operation is controlled in combination with the current speed of the fan and the target correspondence, which is conducive to ensuring that no matter how the actual operating conditions of the water heater change, the fan operation can achieve the required target air volume, ensuring that the water heater maintains a good combustion state and improving safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1 is a schematic diagram of the hardware structure involved in the operation of an embodiment of a gas water heater of the present application;

[0037] FIG2 is a flow chart of an embodiment of a method for controlling a gas water heater according to the present invention;

[0038] FIG3 is a flow chart of another embodiment of a method for controlling a gas water heater according to the present invention;

[0039] FIG4 is a flow chart of another embodiment of a method for controlling a gas water heater according to the present invention;

[0040] FIG5 is a schematic diagram of the target correspondence relationship involved in the embodiment of the control method for a gas water heater of the present application.

[0041] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0042] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] The embodiment of the present application provides a gas water heater.

[0044] 1 , the gas water heater includes a control device 100 , a burner 200 , a fan 300 , a water module 400 , and a detection module 500 . The burner 200 , the fan 300 , the water module 400 , and the detection module 500 are all connected to the control device 100 .

[0045] The water channel module 400 is provided with a pipeline for water circulation.

[0046] The burner 200 is used to release heat by burning gas to heat the water in the water channel module 400 .

[0047] The fan 300 is used to drive air into the water heater to provide the required air volume for the combustion of gas in the burner 200 and to drive the smoke generated by the combustion of the burner 200 to be discharged outside the water heater.

[0048] The detection module 500 is used to detect the operating speed of the fan 300 .

[0049] The control device 100 includes a processor 1001, such as a CPU, a memory 1002, and a timer 1003. These components communicate with each other via a communication bus. The memory 1002 can be a high-speed RAM or a non-volatile memory, such as a disk drive. Alternatively, the memory 1002 can be a storage device independent of the processor 1001.

[0050] In this embodiment, the control device 100 includes a system control module and a fan 300 control module connected to the system control module. The water path module 400 and the burner 200 are both connected to the system control module, and the detection module 500 and the fan 300 are both connected to the fan 300 control module. In other embodiments, the control device 100 may also be an integrated control module.

[0051] Those skilled in the art will understand that the device structure shown in FIG1 does not constitute a limitation on the device, and may include more or fewer components than shown, or a combination of certain components, or a different arrangement of components.

[0052] As shown in FIG. 1 , the memory 1002 as a computer storage medium may include a control program for the gas water heater.

[0053] In the device shown in FIG1 , the processor 1001 can be used to call the control program of the gas water heater stored in the memory 1002 and execute the relevant steps of the control method of the gas water heater in the following embodiment.

[0054] An embodiment of the present application also provides a control method for a gas water heater, which is applied to the above-mentioned gas water heater.

[0055] The inventors have discovered that fan control parameters at a certain gas flow rate are generally fixed values ​​pre-set before leaving the factory. However, the operation of the water heater is easily affected by the installation environment, changes in its own state, etc., which can cause the wind resistance in the fan operating environment to be unstable. The fan can actually achieve too much or too little air volume when operating according to the pre-set fan control parameters, resulting in the inability to achieve a good combustion state during use of the equipment and even affecting user safety. Referring to Figure 2, an embodiment of the control method of the gas water heater of the present application is proposed. In this embodiment, the control method of the gas water heater includes:

[0056] Step S10, controlling the operation of the fan in the gas water heater according to preset control parameters and detecting the actual speed of the fan to obtain the hot or cold state of the gas water heater;

[0057] Step S10 is performed when the water heater is turned on before leaving the factory, when it is turned on for the first time after leaving the factory, or when a preset instruction is received during the first start-up or operation.

[0058] Preset control parameters are pre-set drive control parameters for the fan to achieve the target air volume under preset operating conditions. These parameters include at least one of the following: a preset duty cycle, a preset voltage, a preset current, and a preset power. The target air volume is specifically the target air volume required for the fan to achieve optimal combustion when the burner intake is at a preset gas volume.

[0059] Under the preset working conditions, the fan is controlled to operate according to the preset control parameters, and the real-time speed detected by the detection module during the operation of the fan is used as the actual speed. The number of actual speeds obtained can be one or more.

[0060] During step S10, the water heater is in a combustion state, and different combustion durations result in different hot and cold states. The hot and cold states specifically represent different hot and cold degrees of the water heater body.

[0061] The hot or cold state of the gas water heater can be determined by the status instruction input by the user, by obtaining the combustion time of the gas water heater, or by detecting the temperature of the combustion chamber where the fan of the gas water heater is located.

[0062] Step S20 , determining a target corresponding relationship between the rotation speed of the fan and a control parameter according to the actual rotation speed and the hot / cold state.

[0063] Under preset operating conditions, the fan's operating speed should be the reference speed under standard conditions when the fan is operated under preset control parameters. However, changes in operating conditions will cause different wind resistance in the fan's operating space, resulting in a deviation between the actual operating speed and the reference speed, and the actual air volume cannot reach the target air volume. Based on this, different control parameters need to be set correspondingly for different fan speeds so that the actual air volume under the drive of the fan can reach the target air volume.

[0064] The target correspondence is the control parameter that enables the actual air volume to reach the target air volume at the actual operating speed of the fan during the operation of the fan controlled by the preset control parameters. The control parameter corresponding to the speed in the target correspondence can be an adjustment rule for the preset control parameter or a target value of the fan control parameter.

[0065] Different actual speeds and different hot and cold states correspond to different target correspondences. Specifically, different target correspondences result from different relationships (such as magnitude or quantity) between the actual speed and the reference speed corresponding to the preset control parameter, as well as different hot and cold states. The target correspondence can take the form of a calculation relationship, a mapping relationship, or an algorithmic model.

[0066] In one implementation, a preset correspondence between fan speed and fan control parameters can be obtained in advance based on a prototype test under preset working conditions, and the preset correspondence can be corrected by actual speed and hot and cold states to obtain a target correspondence.

[0067] In another implementation, a deviation between the actual air volume and the target air volume corresponding to the actual speed and the hot / cold state can be obtained. A target value of a control parameter or a preset control parameter adjustment rule required for the fan to achieve the target air volume can be determined based on the deviation and the hot / cold state. This value is used as the actual speed corresponding control parameter. The target correspondence relationship includes the actual speed and the corresponding control parameter. If there can be more than one actual speed, the control parameter corresponding to each actual speed can be determined, and a target correspondence relationship can be established based on this correspondence relationship.

[0068] In yet another implementation, when the hot and cold state is the hot state, the target correspondence relationship may be determined according to the actual rotation speed.

[0069] Furthermore, when more than one actual speed is obtained, the first actual speed corresponding to the gas water heater being in a cold state and the second actual speed corresponding to the gas water heater being in a hot state among the more than one actual speeds can be determined based on the cold and hot states, and the correspondence between the speed and the control parameter here can be determined based on the first actual speed and the second actual speed.

[0070] Step S30 , detecting the current rotation speed of the fan, and controlling the operation of the fan according to the corresponding relationship between the current rotation speed and the target.

[0071] The current speed here can be the fan speed detected in real time during the current or subsequent operation of the gas water heater. Specifically, the current speed of the fan can be detected during the process of controlling the fan operation according to preset control parameters after step S20.

[0072] In this embodiment, the current speed is obtained by acquiring data detected by a detection module corresponding to the fan. In other embodiments, the current speed can also be obtained by acquiring data detected by the detection module and then performing correction.

[0073] The control parameter corresponding to the current speed in the target corresponding relationship is determined as the target control parameter, and the fan operation is controlled according to the target control parameter.

[0074] A control method for a gas water heater proposed in an embodiment of the present application first establishes a target correspondence between the fan speed and the control parameters based on the actual speed of the gas water heater fan when it is controlled according to preset control parameters and the corresponding hot and cold states of the water heater. The established target correspondence can accurately reflect the control parameters required to achieve the target air volume when the fan speed changes due to changes in wind resistance. Based on this, during the subsequent operation of the fan, the fan operation is controlled in combination with the current speed of the fan and the target correspondence, which is conducive to ensuring that no matter how the actual operating conditions of the water heater change, the fan operation can achieve the required target air volume, ensuring that the water heater maintains a good combustion state and improving safety of use.

[0075] Furthermore, based on the above embodiment, another embodiment of the control method of the gas water heater of the present application is proposed. In this embodiment, referring to FIG3 , step S20 includes:

[0076] Step S21 : obtaining a preset corresponding relationship, where the preset corresponding relationship includes a corresponding relationship between at least two preset rotational speeds of the fan and a control parameter of the fan.

[0077] The preset corresponding relationship is specifically obtained in advance based on prototype testing under preset working conditions, and is also obtained based on analysis of actual operating status parameters of other water heaters.

[0078] The at least two preset speeds may correspond to at least two speed intervals, and different speed intervals may correspond to different control parameters.

[0079] Step S22: correcting the preset speed in the preset correspondence according to the actual speed and the hot / cold state to obtain the target correspondence.

[0080] Specifically, a speed correction value may be determined according to the actual speed and the hot / cold state, and all or part of the preset speeds in the preset correspondence may be corrected according to the speed correction value to obtain a new correspondence as the target correspondence here.

[0081] In this embodiment, through the above method, the target correspondence relationship can accurately reflect the individual actual situation of the gas water heater, ensure the accuracy of the fan control parameters determined based on the target correspondence relationship, and further the air volume under the operation of the fan can ensure that the water heater maintains a good combustion state and improves the safety of use.

[0082] In other embodiments, the preset correspondence may also include a preset relationship between the fan speed and the control parameter. The preset coefficient in the preset relationship may be corrected according to the actual speed and the hot and cold state to obtain a new relationship as the target correspondence.

[0083] Furthermore, in this embodiment, the step of correcting the preset speed in the preset correspondence according to the actual speed and the hot and cold conditions to obtain the target correspondence includes: determining the difference between the actual speed and the reference speed corresponding to the preset control parameter; determining a speed correction value according to the difference and the hot and cold conditions; and correcting the preset speed in the preset correspondence according to the speed correction value to obtain the target correspondence.

[0084] The reference speed is specifically a reference value that the fan operating speed needs to reach when the target air volume is achieved under preset working conditions during the operation of the fan controlled by the pre-determined preset control parameters.

[0085] The difference between the actual speed and the reference speed is specifically a calculation result obtained by subtracting the reference speed from the actual speed.

[0086] The different degrees of hotness and coldness represented by the hot and cold states can correspond to different correction values, and the speed correction value is obtained by correcting the difference between the correction values. The correction value here can be greater than 0, less than 0, or equal to 0.

[0087] In this embodiment, the hot / cold state includes either a cold state or a hot state. When the hot / cold state is hot, the difference is determined to be the speed correction value. When the hot / cold state is cold, the difference is increased by a preset speed correction value to obtain the speed correction value. The preset speed correction value here can be a fixed value set in advance, or it can be a value determined based on the actual operating state of the water heater, for example, based on the ambient temperature of the water heater's environment, preset control parameters, and / or the current gas volume. In this embodiment, the sum of the preset speed correction value and the difference is used as the speed correction value. In other embodiments, the product of the preset speed correction value and the difference is used as the speed correction value.

[0088] In this embodiment, the preset correspondence includes a reference speed R0, a first preset speed R1, and a second preset speed R2. The first preset speed is greater than the reference speed, the second preset speed is greater than the first preset speed, and the speed correction value is dn. Then, in the target correspondence, the reference speed R0'=R0+dn, the first preset speed R1'=R1+dn, and the second preset speed R2'=R2+dn.

[0089] In this embodiment, the difference between the actual speed and the reference speed can accurately reflect the deviation between the actual air volume and the target air volume when the fan is driven according to the preset control parameters. The hot and cold conditions can accurately reflect the degree of matching between the deviation represented by the difference and the actual situation. The speed correction value is determined by combining the difference and the hot and cold conditions to correct the preset speed to obtain the target correspondence, which is conducive to further improving the accuracy of the target correspondence, ensuring that the fan controlled based on the target correspondence can accurately achieve the target air volume required for a good combustion state while improving the safety of equipment use.

[0090] Among them, there is a deviation between the actual speed measured when the water heater has not yet reached the hot engine state and the speed actually reached in the working state of the water heater combustion process. The difference obtained by detecting the actual speed when the water heater is hot is directly used as the speed correction value. The difference obtained by detecting the actual speed when the water heater is cold is increased and used as the speed correction value, thereby further improving the accuracy of the target correspondence relationship, ensuring that the actual air volume can accurately reach the target air volume when the fan is controlled to operate based on the target correspondence relationship during the subsequent water heater combustion process, further ensuring that the water heater can reach a good combustion state while ensuring the safety of equipment use.

[0091] Furthermore, based on any of the above embodiments, another embodiment of the control method of the gas water heater of the present application is proposed. In this embodiment, referring to FIG4 , before step S10, the method further includes:

[0092] Step S01, controlling the gas water heater to perform a preheating operation.

[0093] In this embodiment, the gas water heater performing the preheating operation includes controlling the gas water heater to start and operate at maximum load.

[0094] In other embodiments, the target load of the water heater at the time of preset operation may also be determined according to preset control parameters, and the operation of the gas water heater may be controlled according to the target load.

[0095] In this embodiment, the gas water heater performs a preheating operation before the actual speed detection, which is beneficial to ensure that the target correspondence obtained based on the actual speed correction is more in line with the actual operating conditions of the fan during the operation of the water heater, and is beneficial to further ensure the good combustion of the gas water heater while improving the safety of use.

[0096] Furthermore, in this embodiment, the step of obtaining the hot and cold state of the gas water heater includes: when the operation time of the preheating operation is not less than the preset time, determining that the hot and cold state is a hot state; when the operation time of the preheating operation is less than the preset time, determining that the hot and cold state is a cold state.

[0097] The preset duration is specifically a critical time value used to distinguish between the hot and cold states of the gas water heater. The preset duration can be a pre-set fixed value or determined based on the actual operating conditions of the water heater. For example, the preset duration can be determined based on the temperature of the environment in which the gas water heater is located and / or the load parameters during the preheating operation of the gas water heater and / or the temperature change at the exhaust port of the gas water heater, thereby improving the accuracy of hot and cold state identification.

[0098] In this embodiment, the hot and cold states of the gas water heater are distinguished based on the size relationship between the operation duration of the preheating operation and the preset duration, which is conducive to improving the accuracy of cold and hot state identification, so as to improve the accuracy of determining the target correspondence based on the cold and hot states, so as to further ensure the good combustion state of the equipment while improving the safety of use.

[0099] Furthermore, based on any of the above embodiments, another embodiment of the control method for the gas water heater of the present application is proposed. In this embodiment, referring to FIG5 , the target correspondence includes a correspondence between at least two preset speeds and the control parameters of the fan. The at least two preset speeds here can be speeds obtained by correcting the preset speeds in the preset correspondence in the manner mentioned above. Step S30 includes: determining the target control parameters of the fan based on the relationship between the current speed and the preset speed based on the target correspondence; and controlling the operation of the fan according to the target control parameters.

[0100] The target control parameter may include an adjustment rule for a preset control parameter or a target value of the control parameter to be achieved.

[0101] The control parameter corresponding to the target corresponding relationship is determined as the target control parameter according to the magnitude relationship between the current speed and the preset speed. Alternatively, the control parameter corresponding to the target corresponding relationship is determined as the target control parameter according to the quantitative relationship between the current speed and the preset speed.

[0102] When the target control parameter is target current, the fan is driven according to the target current. When the target control parameter is target duty cycle, the fan is controlled according to the target duty cycle. When the target control parameter is target power, the fan is controlled according to the target power. When the target control parameter is target voltage, the fan is controlled according to the target voltage.

[0103] The target control parameter includes increasing the fan drive current when the current is increased. The target control parameter includes increasing the fan drive duty cycle when the duty cycle is increased. The target control parameter includes increasing the fan drive power when the power is increased. The target control parameter includes increasing the fan drive voltage when the voltage is increased.

[0104] In this embodiment, the relationship between the current speed and the preset speed can accurately reflect the wind resistance of the fan during the current operation of the water heater, and further determine the corresponding control parameters in the target correspondence as the target control parameters to control the fan operation, which is conducive to ensuring that the air volume under the fan operation control can accurately reach the target air volume required for a good combustion state while the water heater operates safely.

[0105] Further, in this embodiment, the at least two preset speeds include a first preset speed and a second preset speed, and the step of determining the target control parameter of the fan based on the relationship between the current speed and the preset speed includes: when the current speed is less than the first preset speed, determining the preset control parameter as the target control parameter; when the current speed is greater than the second preset speed, determining that the fan stops as the target control parameter; when the current speed is not less than the first preset speed and not greater than the second preset speed, increasing the preset control parameter to obtain the target control parameter; wherein, the first preset speed is less than the second preset speed.

[0106] When increasing the preset control parameter, the preset control parameter may be increased according to a pre-set parameter adjustment value, or the parameter adjustment value may be determined based on the actual operating conditions of the water heater. For example, the parameter adjustment value may be determined based on the current gas input to the water heater and / or the ambient temperature of the water heater's environment and / or the change in the water temperature of the water heater's inlet and outlet and / or the outlet temperature of the water heater's exhaust port, and the preset control parameter may be increased according to the determined parameter adjustment value to obtain the target control parameter.

[0107] For example, the target correspondence is shown in Figure 5. The first preset speed is R1, and the second preset speed is R2. When the fan speed is less than R1 (area I or II in the figure), the preset control parameter is maintained as the target control parameter; when the fan speed is greater than R2 (area IV in the figure), the fan is stopped as the target control parameter; when the fan speed is greater than R1 and less than R2 (area III in the figure), the preset control parameter is increased to obtain the target control parameter.

[0108] In this embodiment, when the fan speed is less than the first preset speed, it indicates that the current operating resistance of the fan is small, and the water heater is currently in a good combustion state. At this time, determining the preset control parameter as the target control parameter is conducive to ensuring that the water heater can maintain the current good combustion state; the fan speed is greater than the first preset speed, indicating that the current operating resistance of the fan is large, and blockage may occur, which poses a safety risk. At this time, stopping the fan operation is conducive to avoiding safety accidents caused by excessive pressure in the water heater, thereby helping to improve the safety of use during the operation of the water heater; when the fan speed is between the first preset speed and the second preset speed, it indicates that the water heater currently does not pose a safety risk. At this time, increasing the preset control parameter to obtain the target control parameter to control the fan operation is conducive to increasing the amount of air introduced into the water heater, so as to improve the combustion efficiency of the water heater, thereby further ensuring the good combustion state of the water heater.

[0109] Furthermore, in this embodiment, when the target control parameter is for the fan to stop, while controlling the fan to stop, an alarm prompt message can be output and / or the burner in the water heater can be controlled to stop burning and / or the water heater can be controlled to stop gas input, so as to further improve the safety of equipment use.

[0110] In other embodiments, the current speed of the fan can be monitored during the operation of the fan according to other control parameters other than the preset control parameters. The corresponding control parameter in the target correspondence relationship is determined as the reference control parameter based on the relationship between the current speed and the preset speed. The reference control parameter is adjusted according to the parameter deviation value between the preset control parameter and other control parameters here to obtain the target control parameter, and the operation of the fan is controlled according to the determined target control parameter.

[0111] In addition, an embodiment of the present application further proposes a storage medium on which a control program for a gas water heater is stored. When the control program for the gas water heater is executed by a processor, the relevant steps of any embodiment of the above gas water heater control method are implemented.

[0112] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0113] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0114] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, gas water heater, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0115] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for controlling a gas water heater, wherein: The control method of the gas water heater comprises the following steps: Control the operation of the fan in the gas water heater according to preset control parameters and detect the actual speed of the fan to obtain the hot or cold state of the gas water heater; Determining a target corresponding relationship between the speed of the fan and a control parameter according to the actual speed and the hot and cold state; The current rotation speed of the fan is detected, and the operation of the fan is controlled according to the corresponding relationship between the current rotation speed and the target.

2. The control method of the gas water heater according to claim 1, wherein: The step of determining the target corresponding relationship between the speed of the fan and the control parameter according to the actual speed and the hot and cold state comprises: Acquire a preset corresponding relationship, where the preset corresponding relationship includes a corresponding relationship between at least two preset rotational speeds of the fan and a control parameter of the fan; The preset speed in the preset corresponding relationship is corrected according to the actual speed and the hot and cold states to obtain the target corresponding relationship.

3. The control method of the gas water heater according to claim 2, wherein: The step of correcting the preset speed in the preset corresponding relationship according to the actual speed and the hot and cold state to obtain the target corresponding relationship includes: Determine a difference between the actual speed and a reference speed corresponding to the preset control parameter; Determine a rotation speed correction value according to the difference and the hot and cold states; The preset speed in the preset corresponding relationship is corrected according to the speed correction value to obtain the target corresponding relationship.

4. The control method of the gas water heater according to claim 3, wherein: The step of determining the rotation speed correction value according to the hot and cold states and the difference comprises: When the hot and cold state is the hot state, determining the difference to be the rotation speed correction value; When the hot and cold state is a cold state, the difference is increased according to a preset rotation speed correction value to obtain the rotation speed correction value.

5. The control method of the gas water heater according to any one of claims 1 to 4, wherein: Before the step of controlling the operation of the fan in the gas water heater according to the preset control parameters and detecting the actual speed of the fan to obtain the hot or cold state of the gas water heater, the method further includes: The gas water heater is controlled to perform a preheating operation.

6. The control method of a gas water heater according to any one of claims 1 to 5, wherein: The step of obtaining the hot or cold state of the gas water heater comprises: When the operation time of the preheating operation is not less than the preset time, determining that the cold and hot state is a hot state; When the operation time of the preheating operation is less than the preset time, it is determined that the hot / cold state is a cold state.

7. The control method of a gas water heater according to any one of claims 1 to 6, wherein: The target correspondence relationship includes a correspondence relationship between at least two preset speeds and control parameters of the fan, and the step of controlling the operation of the fan according to the current speed and the target correspondence relationship includes: Based on the target corresponding relationship, determining the target control parameter of the fan according to the relationship between the current speed and the preset speed; The operation of the fan is controlled according to the target control parameter.

8. The control method of the gas water heater according to claim 7, wherein: The at least two preset speeds include a first preset speed and a second preset speed, and the step of determining the target control parameter of the fan according to the relationship between the current speed and the preset speed includes: When the current rotation speed is less than the first preset rotation speed, determining the preset control parameter as the target control parameter; When the current rotation speed is greater than the second preset rotation speed, determining that the fan is stopped as the target control parameter; When the current speed is not less than the first preset speed and not greater than the second preset speed, increasing the preset control parameter to obtain the target control parameter; Wherein, the first preset rotation speed is less than the second preset rotation speed.

9. A gas water heater, wherein: The gas water heater includes a control device and a fan connected to the control device, and the control device includes: a memory, a processor, and a control program of the gas water heater stored in the memory and executable on the processor. When the control program of the gas water heater is executed by the processor, the steps of the control method of the gas water heater as described in any one of claims 1 to 8 are implemented.

10. A storage medium, wherein: The storage medium stores a control program for the gas water heater, and when the control program for the gas water heater is executed by the processor, the steps of the control method for the gas water heater according to any one of claims 1 to 8 are implemented.

11. A computer program, wherein: The computer program includes instructions, and when the instructions are executed by the gas water heater, the gas water heater executes the steps of the control method of the gas water heater according to any one of claims 1 to 8.

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