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

Abstract

The invention discloses a control method of a gas water heater, the gas water heater and a storage medium. The method comprises the steps that a draught fan in the gas water heater is controlled to operate according to preset control parameters, the actual rotating speed of the draught fan is detected, and the cold and hot states of the gas water heater are obtained; determining a target corresponding relation between the rotating speed of the fan and control parameters according to the actual rotating speed and the cold and hot state; and the current rotating speed of the draught fan is detected, and the draught fan is controlled to operate according to the current rotating speed and the target corresponding relation. The invention aims to ensure that the water heater is kept in a good combustion state and the use safety is improved.

Description

Technical Field

[0001] The present invention 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

[0002] During the operation of the gas water heater, the gas flow rate is controlled to supply the gas combustion heat required to produce hot water. For a gas water heater equipped with a fan, the fan generally runs at a speed that matches the gas flow rate.

[0003] Among them, the fan control parameters under 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 will cause the wind resistance of the fan operating environment to be unstable. The fan operates according to the pre-set fan control parameters and actually achieves too much or too little air volume, resulting in the equipment being unable to achieve a good combustion state during use and even affecting the user's safety. Summary of the invention

[0004] The main purpose of the present invention 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 is maintained in a good combustion state and improve the safety of use.

[0005] To achieve the above object, the present invention provides a control method for a gas water heater, the control method for a gas water heater comprising the following steps:

[0006] 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;

[0007] 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;

[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] Optionally, the step of 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 and cold state includes:

[0010] 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;

[0011] 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.

[0012] Optionally, 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:

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

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

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

[0016] Optionally, 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 to be the rotation speed correction value;

[0018] 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.

[0019] Optionally, 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 step further includes:

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

[0021] Optionally, 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 cold and hot state is a 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 a cold state.

[0024] Optionally, 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:

[0025] 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;

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

[0027] Optionally, 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:

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

[0029] When the current rotation speed is greater than the second preset rotation speed, determining that the fan is stopped as 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 rotation speed is less than the second preset rotation 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, 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 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] The present invention proposes a control method for a water heater. The method first establishes a target corresponding relationship between the speed of the fan and the control parameters based on the actual speed of the fan of the gas water heater when it is controlled according to preset control parameters and the corresponding hot and cold states of the water heater. The established target corresponding relationship 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 corresponding relationship, 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 is maintained in a good combustion state and improving safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the hardware structure involved in the operation of a gas water heater according to an embodiment of the present invention;

[0036] Figure 2A schematic diagram of a flow chart of an embodiment of a control method for a gas water heater of the present invention;

[0037] Figure 3 A schematic flow chart of another embodiment of a method for controlling a gas water heater according to the present invention;

[0038] Figure 4 A flow chart of another embodiment of a method for controlling a gas water heater according to the present invention;

[0039] Figure 5 It is a schematic diagram of the target correspondence involved in the control method embodiment of the gas water heater of the present invention.

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0042] An embodiment of the present invention provides a gas water heater.

[0043] In the embodiment of the present invention, refer to Figure 1 The gas water heater includes a control device 100, a burner 200, a fan 300, a water circuit module 400 and a detection module 500. The burner 200, the fan 300, the water circuit module 400 and the detection module 500 are all connected to the control device 100.

[0044] The water channel module 400 is provided with a pipeline for water circulation.

[0045] The burner 200 is used to release heat by burning gas to heat the water in the water channel module 400 .

[0046] The fan 300 is used to drive air into the water heater to provide the required amount of air for the combustion of the 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.

[0047] The detection module 500 is used to detect the operating speed of the fan 300 .

[0048] The control device 100 includes: a processor 1001, such as a CPU, a memory 1002, and a timer 1003. Among them, these components are connected and communicated through a communication bus. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0049] 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 circuit 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.

[0050] Those skilled in the art will understand that Figure 1 The device structure shown in the figure does not constitute a limitation of the device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0051] like Figure 1 As shown, the memory 1002 as a computer storage medium may include a control program for the gas water heater.

[0052] exist Figure 1 In the device shown, 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 step operations of the control method of the gas water heater in the following embodiment.

[0053] An embodiment of the present invention further provides a control method for a gas water heater, which is applied to the above-mentioned gas water heater.

[0054] Reference Figure 2 , an embodiment of a control method for a gas water heater of the present application is proposed. In this embodiment, the control method for the gas water heater includes:

[0055] 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;

[0056] Step S10 is performed when the water heater is turned on before leaving the factory or 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 during operation.

[0057] The preset control parameters are the drive control parameters of the fan when the target air volume is reached under the preset working conditions. The preset control parameters include at least one of the following parameters: preset duty cycle, preset voltage, preset current, preset power. Here, the target air volume is specifically the target value of the air volume required to be achieved by the fan when the air intake of the burner is the preset gas volume and the water heater reaches a good combustion state.

[0058] Under the preset working conditions, the fan is controlled to run 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 here. The number of actual speeds obtained can be one or more than one.

[0059] During the execution of step S10, the water heater is in a combustion state, and the hot and cold states are different depending on the combustion time of the water heater. The hot and cold states specifically represent different hot and cold degrees of the water heater body.

[0060] The hot or cold state of the gas water heater can be determined by a state command input by a 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.

[0061] Step S20, 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;

[0062] Under preset operating conditions, the fan 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 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.

[0063] The target correspondence is a 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 parameter. Among them, the control parameter corresponding to the speed in the target correspondence can be the adjustment rule of the preset control parameter or the target value of the fan control parameter.

[0064] Different actual speeds and different hot and cold states correspond to different target correspondences. Specifically, if the relationship (size relationship or quantity relationship, etc.) between the actual speed and the reference speed corresponding to the preset control parameter is different, or the hot and cold states are different, the target correspondence will be different. The target correspondence may include a calculation relationship, a mapping relationship, or an algorithm model.

[0065] 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.

[0066] In another implementation, the deviation value between the actual air volume corresponding to the actual speed and the hot and cold state and the target air volume can also be obtained, and the target value of the control parameter or the adjustment rule of the preset control parameter required for the fan to reach the target air volume can be determined according to the deviation value and the hot and cold state, as the actual speed corresponding control parameter, and the target corresponding relationship includes the actual speed and the corresponding control parameter here. Among them, the number of actual speeds can be more than one, then the control parameter corresponding to each actual speed can be determined, and the target corresponding relationship is established based on the corresponding relationship here.

[0067] In yet another implementation, when the cold and hot state is the hot state, the target correspondence relationship may be determined according to the actual rotation speed.

[0068] Furthermore, when more than one actual speeds are obtained, a first actual speed corresponding to the gas water heater being in a cold state and a 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 corresponding relationship between the speed and the control parameter here can be determined according to the first actual speed and the second actual speed.

[0069] 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.

[0070] The current speed here may be the fan speed detected in real time during the current or subsequent operation of the gas water heater. Specifically, the current fan speed may be detected during the process of controlling the fan operation according to preset control parameters after step S20.

[0071] 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 correcting it.

[0072] 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.

[0073] A control method for a gas water heater proposed in an embodiment of the present invention first establishes a target correspondence between the speed of the fan and the control parameters based on the actual speed of the fan of the gas water heater 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 is maintained in a good combustion state and improving safety of use.

[0074] Further, 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 Figure 3 , the step S20 comprises:

[0075] Step S21, obtaining a preset corresponding relationship, wherein 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;

[0076] The preset corresponding relationship is specifically obtained in advance based on a prototype test under preset working conditions, and is also obtained based on an analysis of actual operating status parameters of other water heaters.

[0077] The at least two preset rotational speeds may correspond to at least two rotational speed intervals, and different rotational speed intervals may correspond to different control parameters.

[0078] Step S22, 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.

[0079] Specifically, the speed correction value can be determined according to the actual speed and the hot and cold state, and all or part of the preset speeds in the preset correspondence can be corrected according to the speed correction value to obtain a new correspondence as the target correspondence here.

[0080] 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.

[0081] 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.

[0082] Further, in the present embodiment, the step of correcting the preset speed in the preset correspondence relationship according to the actual speed and the hot and cold states to obtain the target correspondence relationship 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 states; and correcting the preset speed in the preset correspondence relationship according to the speed correction value to obtain the target correspondence relationship.

[0083] 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 preset control parameters determined in advance.

[0084] 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.

[0085] The hot and cold states represent different degrees of hot and cold, which may correspond to different correction values, and the speed correction value is obtained by correcting the difference according to the correction value. The correction value here may be greater than 0, less than 0 or equal to 0.

[0086] In this embodiment, the hot and cold state includes a cold state or a hot state. When the hot and cold state is a hot state, the difference is determined to be the speed correction value; when the hot and cold state is a cold state, the difference is increased according to the preset speed correction value to obtain the speed correction value. The preset speed correction value here can be a preset fixed value, or a value determined according to the actual operating state of the water heater, for example, the preset speed correction value is obtained according to the ambient temperature of the environment where the water heater is located and / or 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.

[0087] 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.

[0088] 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, and the hot and cold states can accurately reflect the degree of match 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 states to correct the preset speed to obtain the target corresponding relationship, which is conducive to further improving the accuracy of the target corresponding relationship, ensuring that the fan controlled based on the target corresponding relationship can accurately reach the target air volume required for a good combustion state while improving the safety of equipment use.

[0089] 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 in a hot state is directly used as the speed correction value. The difference obtained by detecting the actual speed when the water heater is in a cold state 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 achieve a good combustion state while ensuring the safety of equipment use.

[0090] Further, based on any of the above embodiments, another embodiment of the control method of the gas water heater of the present application is proposed. Figure 4 , before step S10, it also includes:

[0091] Step S01, controlling the gas water heater to perform a preheating operation.

[0092] In this embodiment, the gas water heater performs the preheating operation including controlling the gas water heater to start and operate at maximum load.

[0093] In other embodiments, the target load of the water heater when it is preset here can also be determined according to the preset control parameters, and the operation of the gas water heater can be controlled according to the target load.

[0094] 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, which is beneficial to further ensure the good combustion of the gas water heater while improving its safety of use.

[0095] Furthermore, in this embodiment, the step of obtaining the hot or 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 or cold state is a hot state; when the operation time of the preheating operation is less than the preset time, determining that the hot or cold state is a cold state.

[0096] The preset time is specifically a time critical value for distinguishing the hot and cold degrees of the gas water heater. The preset time can be a preset fixed value, or can be determined according to the actual operating conditions of the water heater. For example, the preset time can be determined according to the temperature of the environment where the gas water heater is located and / or the load parameters of the gas water heater during the preheating operation and / or the temperature change value of the exhaust port of the gas water heater, so as to improve the accuracy of the cold and hot state recognition.

[0097] In this embodiment, the relationship between the operation time adapted for the preheating operation and the preset time is used to distinguish the hot and cold states of the gas water heater, which is beneficial 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.

[0098] Further, based on any of the above embodiments, another embodiment of the control method of the gas water heater of the present application is proposed. Figure 5 The target correspondence relationship includes the correspondence relationship between at least two preset speeds and the control parameters of the fan, and the at least two preset speeds here can be the speeds obtained by correcting the preset speeds in the preset correspondence relationship in the above-mentioned manner. The step S30 includes: based on the target correspondence relationship, determining the target control parameter of the fan according to the relationship between the current speed and the preset speed; and controlling the operation of the fan according to the target control parameter.

[0099] 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.

[0100] The corresponding control parameter in the target corresponding relationship is determined as the target control parameter according to the magnitude relationship between the current speed and the preset speed. Or, the corresponding control parameter in the target corresponding relationship is determined as the target control parameter according to the quantitative relationship between the current speed and the preset speed.

[0101] When the target control parameter is the target current, the fan is driven to run according to the target current. When the target control parameter is the target duty cycle, the fan is controlled to run according to the target duty cycle. When the target control parameter is the target power, the fan is controlled to run according to the target power. When the target control parameter is the target voltage, the fan is controlled to run according to the target voltage.

[0102] The target control parameter includes increasing the driving current of the fan when the current is increased. The target control parameter includes increasing the driving duty cycle of the fan when the duty cycle is increased. The target control parameter includes increasing the driving power of the fan when the power is increased. The target control parameter includes increasing the driving voltage of the fan when the voltage is increased.

[0103] 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 relationship as the target control parameters to control the operation of the fan, which is beneficial to ensure 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.

[0104] 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.

[0105] When increasing the preset control parameter, the preset control parameter may be increased according to the preset parameter adjustment value, or the preset control parameter may be increased by determining the parameter adjustment value according to the actual operation of the water heater. For example, the parameter adjustment value is determined according to the current gas input of the water heater and / or the ambient temperature of the environment where the water heater is located and / or the water temperature change value of the inlet and outlet water of the water heater and / or the outlet temperature of the exhaust port of the water heater, and the preset control parameter is increased according to the determined parameter adjustment value to obtain the target control parameter.

[0106] For example, the target correspondence is Figure 5As shown, the first preset speed is R1, 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 stops 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.

[0107] 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 the water heater during operation; 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.

[0108] Furthermore, in this embodiment, when the target control parameter is fan 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.

[0109] 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, and the corresponding control parameter in the target correspondence relationship is determined as the reference control parameter according to 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.

[0110] In addition, an embodiment of the present invention 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.

[0111] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0112] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0113] 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 a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention 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 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 invention.

[0114] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A control method for a gas water heater, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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 claim 1, characterized in that: 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 the gas water heater according to claim 5, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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.

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