Gas water heater control method, gas water heater, device, equipment and medium

Abstract

The invention discloses a gas water heater control method, a gas water heater, a device, equipment and a medium, an electric heating module is arranged in a waterway of the gas water heater, when the gas water heater is in a gas underpressure state, the current value of a gas proportional valve is increased, whether the temperature difference between the set temperature of a user and the outlet water temperature is larger than a first threshold value or not is judged, and if yes, the electric heating module is started; when the temperature difference between the set temperature and the water outlet temperature is larger than a first threshold value, whether the difference value between the actual current value and the theoretical current value of the gas proportional valve is larger than or equal to a preset value or not is judged, and when the difference value between the actual current value and the theoretical current value is larger than or equal to the preset value, the electric heating module is started, and the heating power of the electric heating module is adjusted; the temperature difference between the set temperature and the outlet water temperature is smaller than the second threshold value. And under the condition of gas underpressure, the heating power is improved by adjusting the combination of the gas proportional valve and the electric heating module, so that the water outlet temperature is closer to the set temperature of a user, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to water heater technology, and in particular to a gas water heater control method, a gas water heater, a device, equipment and a medium. Background Art

[0002] Gas water heaters use gas as fuel, and the heat obtained through combustion is used to heat the water in the water heater to obtain hot water.

[0003] When the gas consumption peaks, the gas pressure in the user's home will become low (i.e., underpressure), causing the outlet water temperature of the gas water heater to be lower than the user's set temperature. In order to improve this problem, the existing technical solution is: the gas nozzle adopts a multi-gear design, when the gas underpressure occurs, the gear of the gas nozzle is increased; or when the gas underpressure occurs, the number of fire grates in working state is increased.

[0004] However, due to the underpressure at the gas supply end, increasing the gear of the gas nozzle or increasing the number of fire grates in operation has very limited effect on improving the problem of low outlet water temperature. Summary of the invention

[0005] One of the technical problems solved by the present invention is to provide a gas water heater control method to solve the problem that the outlet water temperature is lower than the user's set temperature when the gas water heater is in a gas underpressure state.

[0006] The second technical problem solved by the present invention is to provide a gas water heater to solve the problem that the outlet water temperature is lower than the user's set temperature when the gas water heater is in a gas underpressure state.

[0007] The third technical problem solved by the present invention is to provide a gas water heater control device to solve the problem that the outlet water temperature is lower than the user's set temperature when the gas water heater is in a gas underpressure state.

[0008] The fourth technical problem solved by the present invention is to provide an electronic device to solve the problem that the outlet water temperature is lower than the user's set temperature when the gas water heater is in a gas underpressure state.

[0009] The fifth technical problem solved by the present invention is to provide a computer-readable storage medium to solve the problem that the outlet water temperature is lower than the user's set temperature when the gas water heater is in a gas underpressure state.

[0010] The first technical problem mentioned above is solved by the following technical solution:

[0011] A method for controlling a gas water heater, wherein an electric heating module is arranged in a water path of the gas water heater, the method comprising:

[0012] When the gas water heater is in a gas underpressure state, increasing the current value of the gas proportional valve;

[0013] Determine whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold;

[0014] When the temperature difference between the set temperature and the outlet water temperature is greater than a first threshold, it is determined whether the difference between the actual current value and the theoretical current value of the gas proportional valve is greater than or equal to a preset value, wherein the theoretical current value is the current value required to make the outlet water temperature reach the set temperature under the current inlet water flow rate and inlet water temperature;

[0015] When the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, the electric heating module is started and the heating power of the electric heating module is adjusted until the temperature difference between the set temperature and the water outlet temperature is less than a second threshold value, and the second threshold value is less than the first threshold value.

[0016] The control method of the gas water heater provided by the present invention is that an electric heating module is arranged in the water circuit of the gas water heater, when the gas water heater is in a gas underpressure state, the current value of the gas proportional valve is increased, and it is judged whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold value, when the temperature difference between the set temperature and the outlet water temperature is greater than the first threshold value, it is judged whether the difference between the actual current value and the theoretical current value of the gas proportional valve is greater than or equal to a preset value, wherein the theoretical current value is the current value required for the outlet water temperature to reach the set temperature under the current inlet water flow and inlet water temperature, when the difference between the actual current value and the theoretical current value is greater than or equal to the preset value, the electric heating module is started, and the heating power of the electric heating module is adjusted until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value, and the second threshold value is less than the first threshold value. In the case of gas underpressure, the heating power is increased by adjusting the combination of the gas proportional valve and the electric heating module. Compared with the prior art solution for too low outlet water temperature in the gas underpressure state, the present application can make the outlet water temperature closer to the user's set temperature in the gas underpressure state, thereby improving the user experience.

[0017] In some embodiments of the present invention, the gas water heater control method further includes:

[0018] When the difference between the actual current value and the theoretical current value is less than a preset value, the current value of the gas proportional valve is increased or the number of fire strips in operation is increased until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold.

[0019] In some embodiments of the present invention, increasing the current value of the gas proportional valve or increasing the number of fire strips in working state until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value includes:

[0020] Determine whether the number of fire bars currently in operation of the gas water heater has reached the maximum number of fire bars;

[0021] When the number of fire grates currently in operation reaches the maximum number of fire grates, the current value of the gas proportional valve is increased until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value;

[0022] When the number of fire bars currently in working state has not reached the maximum number of fire bars, the number of fire bars in working state is increased, and the step of determining whether the temperature difference between the user's set temperature and the outlet water temperature is greater than the first threshold is returned to execute until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

[0023] In some embodiments of the present invention, the gas water heater control method further includes:

[0024] When the temperature difference between the set temperature and the outlet water temperature is not greater than a first threshold, determining whether the temperature difference between the set temperature and the outlet water temperature is less than a second threshold;

[0025] When the temperature difference between the set temperature and the outlet water temperature is less than a second threshold, maintaining the current combustion state of the gas water heater;

[0026] When the temperature difference between the set temperature and the outlet water temperature is not less than a second threshold, the electric heating module is started and the heating power of the electric heating module is adjusted until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

[0027] In some embodiments of the present invention, a first electric heating module is provided on the water inlet pipe of the gas water heater, and a second electric heating module is provided on the water outlet pipe of the gas water heater. When the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, the first electric heating module is started, and in the process of adjusting the heating power of the first electric heating module, the following is also included:

[0028] Determining whether the heating power of the first electric heating module reaches the maximum heating power;

[0029] When the heating power of the first electric heating module reaches the maximum heating power, determining whether the temperature difference between the set temperature and the outlet water temperature is less than a second threshold;

[0030] When the temperature difference between the set temperature and the outlet water temperature is less than a second threshold, maintaining the current combustion state of the gas water heater and the heating state of the first electric heating module;

[0031] When the temperature difference between the set temperature and the outlet water temperature is not less than a second threshold, the second electric heating module is started, and the heating power of the second electric heating module is adjusted until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

[0032] In some embodiments of the present invention, the gas water heater control method further includes:

[0033] When the gas water heater is in a standby state, if it is detected that the water inlet flow rate is greater than the start-up flow rate, the gas water heater is controlled to start combustion;

[0034] If it is detected that the water inlet flow rate is greater than a preset flow rate, one of the electric heating modules is started, wherein the preset flow rate is greater than the start-up flow rate.

[0035] The above second technical problem is solved by the following technical solution:

[0036] A gas water heater, comprising:

[0037] A heat exchanger, wherein the water inlet of the heat exchanger is connected to the water inlet pipe, and the water outlet of the heat exchanger is connected to the water outlet pipe;

[0038] A burner, wherein the burner and the heat exchanger are arranged in a combustion chamber, the flame nozzle of the burner faces the heat exchanger, and the burner is connected to a gas pipe;

[0039] an igniter, the igniter being arranged on the burner;

[0040] A gas proportional valve, the gas proportional valve being arranged on the gas pipe;

[0041] An inlet water temperature sensor is provided on the inlet water pipe and is used to collect the inlet water temperature;

[0042] An outlet water temperature sensor is disposed on the outlet water pipe and is used to collect the outlet water temperature;

[0043] A water flow sensor, the water flow sensor is arranged on the water inlet pipe and is used to collect the water inlet flow;

[0044] A first electric heating module, wherein the first electric heating module is arranged on the water inlet pipe;

[0045] A second electric heating module, wherein the second electric heating module is arranged on the water outlet pipe;

[0046] A controller, wherein the controller is respectively connected to the igniter, the gas proportional valve, the water inlet temperature sensor, the water outlet temperature sensor, the water flow sensor, the first electric heating module and the second electric heating module, and is used to execute the gas water heater control method provided in the aforementioned embodiment of the present invention.

[0047] The third technical problem mentioned above is solved by the following technical solution:

[0048] A gas water heater control device, wherein an electric heating module is arranged in a water path of the gas water heater, and the device comprises:

[0049] A proportional valve regulating module, used for increasing the current value of the gas proportional valve when the gas water heater is in a gas underpressure state;

[0050] A first judgment module, used to judge whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold;

[0051] A second judgment module is used to judge whether the difference between the actual current value and the theoretical current value of the gas proportional valve is greater than or equal to a preset value when the temperature difference between the set temperature and the outlet water temperature is greater than a first threshold value, wherein the theoretical current value is the current value required to make the outlet water temperature reach the set temperature under the current inlet water flow rate and inlet water temperature;

[0052] The electric heating start module is used to start the electric heating module when the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, and adjust the heating power of the electric heating module until the temperature difference between the set temperature and the water outlet temperature is less than a second threshold value, and the second threshold value is less than the first threshold value.

[0053] The fourth technical problem mentioned above is solved by the following technical solution:

[0054] An electronic device, comprising:

[0055] one or more processors;

[0056] A storage device for storing one or more programs;

[0057] When the one or more programs are executed by the one or more processors, the one or more processors implement the gas water heater control method provided in the aforementioned embodiment of the present invention.

[0058] The fifth technical problem mentioned above is solved by the following technical solution:

[0059] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the gas water heater control method provided in the aforementioned embodiment of the present invention.

[0060] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0062] Figure 1 A flow chart of a gas water heater control method provided by the present invention;

[0063] Figure 2 A schematic diagram of the structure of a gas water heater provided by the present invention;

[0064] Figure 3 A schematic structural diagram of a gas water heater control device provided by the present invention;

[0065] Figure 4 The present invention provides a schematic structural diagram of an electronic device.

[0066] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0067] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0068] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0069] Figure 1 This is a flow chart of a gas water heater control method provided by the present invention. This embodiment can be used to solve the problem that the outlet water temperature of the gas water heater is lower than the set temperature due to gas underpressure. At least one electric heating module is arranged in the water circuit of the gas water heater, and the electric heating module is arranged on the water inlet pipe and / or the water outlet pipe of the gas water heater. The method can be executed by the gas water heater control device provided by the embodiment of the present invention, and the device can be implemented by software and / or hardware, and is usually configured in an electronic device, such as Figure 1 As shown, the gas water heater control method includes the following steps:

[0070] S101. When the gas water heater is in a gas underpressure state, increase the current value of the gas proportional valve.

[0071] In the embodiment of the present invention, during the operation of the gas water heater, the gas pressure at the gas supply end of the gas water heater can be detected by a pressure sensor. When the detected gas pressure is lower than the preset pressure or the gas pressure is lower than the preset pressure and lasts for a preset time, it is determined that the gas water heater is in a gas underpressure state. When the gas water heater is in a gas underpressure state, the current value of the gas proportional valve is increased. By increasing the current value of the gas proportional valve, the gas flow rate sent to the combustion chamber of the gas water heater is increased, the combustion power is improved, and the problem of low water outlet temperature of the gas water heater is improved.

[0072] S102: Determine whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold.

[0073] On the basis of increasing the current value of the gas proportional valve, it is determined whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold, illustratively, the first threshold is 2° C. If yes, step S103 is executed; if no, step 106 is executed.

[0074] S103, determining whether the difference between the actual current value and the theoretical current value of the gas proportional valve is greater than or equal to a preset value.

[0075] When the temperature difference between the user's set temperature and the outlet water temperature is greater than the first threshold, determine whether the difference between the actual current value of the gas proportional valve and the theoretical current value is greater than or equal to a preset value (e.g., 15 mA). The theoretical current value is the current value required to make the outlet water temperature reach the set temperature at the current inlet water flow rate and inlet water temperature. For example, the thermal power required to make the outlet water temperature reach the set temperature can be calculated based on the current inlet water flow rate, inlet water temperature, and set temperature, and then the required gas flow rate can be calculated based on the thermal power, and the theoretical current value for controlling the opening of the gas proportional valve can be further calculated based on the gas flow rate. If yes, execute step S104; if no, execute step S105.

[0076] S104, starting the electric heating module and adjusting the heating power of the electric heating module until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value.

[0077] When the difference between the actual current value and the theoretical current value is greater than or equal to the preset value, it indicates that the gas proportional valve is overloaded, but the temperature difference between the user's set temperature and the outlet water temperature is still greater than the first threshold, the electric heating module is started, and the heating power of the electric heating module is adjusted by feedback regulation until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold, wherein the second threshold is less than the first threshold. Exemplarily, the second threshold is 1°C.

[0078] S105, increasing the current value of the gas proportional valve or increasing the number of fire strips in operation until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value.

[0079] When the difference between the actual current value and the theoretical current value is smaller than the preset value, it means that the heating power can still be increased by increasing the current value of the gas proportional valve or increasing the number of fire grates in working state to improve the problem of low outlet water temperature. Therefore, the current value of the gas proportional valve can be increased or the number of fire grates in working state can be increased until the temperature difference between the set temperature and the outlet water temperature is smaller than the second threshold value.

[0080] In some embodiments of the present invention, the above step S105 includes the following sub-steps:

[0081] S1051. Determine whether the number of fire grates currently in operation of the gas water heater has reached the maximum number of fire grates.

[0082] When the difference between the actual current value and the theoretical current value is less than the preset value, determine whether the number of fire grates currently in operation in the gas water heater has reached the maximum number of fire grates. Fire grates refer to the arrangement of burners in a gas water heater, and a gas water heater usually includes multiple fire grates. The function of the fire grates is to increase the air outlet holes so that the gas and air are fully mixed, so that the gas burns more fully and evenly, and it is also convenient to control the heat. When the opening of the gas proportional valve is constant, the more fire grates there are in operation, the greater the heating power. If so, execute step S1052; if not, execute step S1053.

[0083] S1052: Increase the current value of the gas proportional valve until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value.

[0084] When the number of fire grates currently in operation reaches the maximum number, the current value of the gas proportional valve is increased, the gas flow entering the combustion chamber is increased, and the heating power is increased until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

[0085] S1053, increase the number of fire bars in working state, and return to the step of determining whether the temperature difference between the user's set temperature and the outlet water temperature is greater than the first threshold, until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

[0086] When the number of fire bars currently in working state has not reached the maximum number of fire bars, the number of fire bars in working state is increased, and the step of determining whether the temperature difference between the user's set temperature and the outlet water temperature is greater than the first threshold is returned to execute until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

[0087] S106: Determine whether the temperature difference between the set temperature and the outlet water temperature is less than a second threshold.

[0088] In the above step S102, if the temperature difference between the user's set temperature and the outlet water temperature is not greater than the first threshold, it is further determined whether the temperature difference between the set temperature and the outlet water temperature is less than the second threshold. If so, step S107 is executed; if not, step S108 is executed.

[0089] S107: Maintain the current combustion state of the gas water heater.

[0090] When the temperature difference between the set temperature and the outlet water temperature is less than the second threshold, it means that the outlet water temperature is very close to the set temperature, and no adjustment is required, and only the current combustion state of the gas water heater needs to be maintained.

[0091] S108, starting the electric heating module, and adjusting the heating power of the electric heating module until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value.

[0092] When the temperature difference between the set temperature and the outlet water temperature is not less than the second threshold value (that is, the temperature difference between the set temperature and the outlet water temperature is greater than or equal to the second threshold value and less than or equal to the first threshold value), the electric heating module is started, and the heating power of the electric heating module is adjusted through feedback adjustment until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold value.

[0093] The control method of the gas water heater provided by the present invention is that an electric heating module is arranged in the water circuit of the gas water heater, when the gas water heater is in a gas underpressure state, the current value of the gas proportional valve is increased, and it is judged whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold value, when the temperature difference between the set temperature and the outlet water temperature is greater than the first threshold value, it is judged whether the difference between the actual current value and the theoretical current value of the gas proportional valve is greater than or equal to a preset value, wherein the theoretical current value is the current value required for the outlet water temperature to reach the set temperature under the current inlet water flow and inlet water temperature, when the difference between the actual current value and the theoretical current value is greater than or equal to the preset value, the electric heating module is started, and the heating power of the electric heating module is adjusted until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value, and the second threshold value is less than the first threshold value. In the case of gas underpressure, the heating power is increased by adjusting the combination of the gas proportional valve and the electric heating module. Compared with the prior art solution for too low outlet water temperature in the gas underpressure state, the present application can make the outlet water temperature closer to the user's set temperature in the gas underpressure state, thereby improving the user experience.

[0094] In some embodiments of the present invention, a first electric heating module is provided on the water inlet pipe of the gas water heater, and a second electric heating module is provided on the water outlet pipe of the gas water heater. In the aforementioned embodiment, when it is determined that the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, the first electric heating module is started, and the heating power of the first electric heating module is adjusted until the temperature difference between the set temperature and the water outlet temperature is less than the second threshold value.

[0095] The process of adjusting the heating power of the first electric heating module also includes:

[0096] 1. Determine whether the heating power of the first electric heating module reaches the maximum heating power.

[0097] 2. When the heating power of the first electric heating module reaches the maximum heating power, it is determined whether the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value.

[0098] 3. When the temperature difference between the set temperature and the outlet water temperature is less than the second threshold, the current combustion state of the gas water heater and the heating state of the first electric heating module are maintained.

[0099] When the temperature difference between the set temperature and the outlet water temperature is less than the second threshold, it means that the auxiliary heating of the first electric heating module alone can make the outlet water temperature meet the user's set temperature, and it is only necessary to maintain the current combustion state of the gas water heater and the heating state of the first electric heating module.

[0100] 4. When the temperature difference between the set temperature and the outlet water temperature is not less than a second threshold, start the second electric heating module and adjust the heating power of the second electric heating module until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

[0101] When the temperature difference between the set temperature and the outlet water temperature is not less than the second threshold value, it means that the auxiliary heating of the first electric heating module alone still cannot make the outlet water temperature meet the user's set temperature. Therefore, it is necessary to start the second electric heating module and adjust the heating power of the second electric heating module through feedback adjustment until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold value.

[0102] In some embodiments of the present invention, the gas water heater control method further includes:

[0103] 1. When the gas water heater is in standby mode, if it is detected that the water inlet flow rate is greater than the starting flow rate, the gas water heater is controlled to start combustion.

[0104] The starting flow rate refers to the minimum water flow rate required for the gas water heater to start working. When the water flow rate reaches or exceeds the starting flow rate, the gas water heater is controlled to start combustion. Usually, the starting flow rate of a gas water heater is between 1L / min-3L / min.

[0105] 2. If it is detected that the water inlet flow rate is greater than the preset flow rate, one of the electric heating modules will be started.

[0106] If it is detected that the water inlet flow rate is greater than the preset flow rate, one of the electric heating modules is started so that the outlet water temperature can reach the user's set temperature more quickly, reducing the user's waiting time and improving the user experience. Wherein, the preset flow rate is greater than the start-up flow rate, and for example, the preset flow rate can be set to 5L / min.

[0107] The present invention also provides a gas water heater. Figure 2 A schematic diagram of the structure of a gas water heater provided by the present invention is shown in FIG. Figure 2 As shown, the gas water heater includes:

[0108] The heat exchanger 101 has a water inlet connected to a water inlet pipe 1011, and a water outlet connected to a water outlet pipe 1012. When the cold water entering from the water inlet pipe 1011 flows through the heat exchanger 101, it exchanges heat with the heat exchanger 101, the cold water is heated, and then flows out from the water outlet pipe 1012 and is transported to the water use end through a pipeline.

[0109] The burner 102 and the heat exchanger 101 are arranged in the combustion chamber 103, the flame nozzle of the burner 102 faces the heat exchanger 101, and the burner 102 is connected to the gas pipe 1021. The gas is sent into the burner through the gas pipe 1021, sprayed from the flame nozzle of the burner 102, and ignited, and the high-temperature flue gas generated by the combustion heats the heat exchanger 101.

[0110] An igniter (not shown in the figure) is arranged on the burner 102. The igniter is used to ignite the gas ejected from the burner 102.

[0111] The gas proportional valve 104 is arranged on the gas pipe 1021. By controlling the current of the gas proportional valve, the opening of the gas proportional valve can be adjusted, thereby controlling the flow of the gas entering the burner 102.

[0112] The inlet water temperature sensor 105 is disposed on the inlet water pipe 1011 and is used to collect the inlet water temperature.

[0113] The outlet water temperature sensor 106 is disposed on the outlet water pipe 1012 and is used to collect the outlet water temperature.

[0114] Water flow sensor 107: The water flow sensor 107 is arranged on the water inlet pipe 1011 and is used to collect the water inlet flow.

[0115] The first electric heating module 108 is disposed on the water inlet pipe 1011 and is used for heating water flowing through the water inlet pipe 1011 .

[0116] The second electric heating module 109 is disposed on the water outlet pipe and is used to heat the water flowing through the water outlet pipe 1012 .

[0117] The controller 110 is respectively connected to the igniter, the gas proportional valve 104, the water inlet temperature sensor 105, the water outlet temperature sensor 106, the water flow sensor 107, the first electric heating module 108 and the second electric heating module 109, and is used to execute the gas water heater control method provided in any of the aforementioned embodiments of the present invention.

[0118] For example, Figure 2 As shown, the gas water heater also includes a fan 111, the air inlet of the fan 111 is connected to the outside of the gas water heater, and the air outlet of the fan 111 is connected to the combustion chamber 103. The fan 111 is used to blow external air into the combustion chamber 103 to make the gas burn more completely and improve the combustion efficiency.

[0119] For example, Figure 2As shown, on the water inlet pipe 1011, water inlet temperature sensors 105 are provided upstream and downstream of the first electric heating module 108, and on the water outlet pipe 1012, water outlet temperature sensors 106 are provided upstream and downstream of the second electric heating module 109. By collecting the water inlet temperature upstream and downstream of the first electric heating module 108 and the water outlet temperature upstream and downstream of the second electric heating module 109, more precise temperature control can be achieved.

[0120] Figure 3 This is a schematic diagram of the structure of a gas water heater control device provided by the present invention. An electric heating module is provided in the water circuit of the gas water heater. The device comprises:

[0121] The proportional valve regulating module 201 is used to increase the current value of the gas proportional valve when the gas water heater is in a gas underpressure state;

[0122] The first judgment module 202 is used to judge whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold;

[0123] The second judgment module 203 is used to judge whether the difference between the actual current value and the theoretical current value of the gas proportional valve is greater than or equal to a preset value when the temperature difference between the set temperature and the outlet water temperature is greater than a first threshold value, wherein the theoretical current value is the current value required to make the outlet water temperature reach the set temperature under the current inlet water flow rate and inlet water temperature;

[0124] The electric heating start module 204 is used to start the electric heating module when the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, and adjust the heating power of the electric heating module until the temperature difference between the set temperature and the water outlet temperature is less than a second threshold value, and the second threshold value is less than the first threshold value.

[0125] In some embodiments of the present invention, the gas water heater control device further includes:

[0126] The control module is used to increase the current value of the gas proportional valve or increase the number of fire strips in operation when the difference between the actual current value and the theoretical current value is less than a preset value, until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value.

[0127] In some embodiments of the present invention, the control module includes:

[0128] A judgment submodule, used to judge whether the number of fire bars currently in working state of the gas water heater reaches the maximum number of fire bars;

[0129] A proportional valve current regulating submodule, used for increasing the current value of the gas proportional valve when the number of fire grates currently in operation reaches the maximum number of fire grates, until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value;

[0130] The fire bar number adjustment submodule is used to increase the number of fire bars in working state when the number of fire bars currently in working state has not reached the maximum number of fire bars, and return to execute the step of determining whether the temperature difference between the user's set temperature and the outlet water temperature is greater than the first threshold value, until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold value.

[0131] In some embodiments of the present invention, the gas water heater control device further includes:

[0132] a third judgment module, configured to judge whether the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value when the temperature difference between the set temperature and the outlet water temperature is not greater than the first threshold value;

[0133] A first state maintaining module, used for maintaining the current combustion state of the gas water heater when the temperature difference between the set temperature and the outlet water temperature is less than a second threshold;

[0134] The first starting module is used to start the electric heating module when the temperature difference between the set temperature and the outlet water temperature is not less than a second threshold value, and adjust the heating power of the electric heating module until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold value.

[0135] In some embodiments of the present invention, a first electric heating module is provided on the water inlet pipe of the gas water heater, and a second electric heating module is provided on the water outlet pipe of the gas water heater. When the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, the first electric heating module is started, and the gas water heater control device further includes:

[0136] a fourth judgment module, used for judging whether the heating power of the first electric heating module reaches the maximum heating power during the process of adjusting the heating power of the first electric heating module;

[0137] a fifth judgment module, configured to judge whether the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value when the heating power of the first electric heating module reaches the maximum heating power;

[0138] a second state maintaining module, configured to maintain the current combustion state of the gas water heater and the heating state of the first electric heating module when the temperature difference between the set temperature and the outlet water temperature is less than a second threshold;

[0139] The second starting module is used to start the second electric heating module when the temperature difference between the set temperature and the outlet water temperature is not less than a second threshold value, and adjust the heating power of the second electric heating module until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold value.

[0140] In some embodiments of the present invention, the gas water heater control device further includes:

[0141] A combustion start module, used for controlling the gas water heater to start combustion when it is detected that the water inflow rate is greater than the start flow rate when the gas water heater is in a standby state;

[0142] The third starting module is used to start one of the electric heating modules if it is detected that the water inlet flow rate is greater than a preset flow rate, wherein the preset flow rate is greater than the starting flow rate.

[0143] The above-mentioned gas water heater control device can execute the gas water heater control method provided by the above-mentioned embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the gas water heater control method.

[0144] Figure 4 A schematic diagram of the structure of an electronic device provided by the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0145] like Figure 4 As shown, the electronic device includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0146] A number of components in the electronic device are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0147] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a gas water heater control method.

[0148] In some embodiments, the gas water heater control method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the gas water heater control method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the gas water heater control method in any other appropriate manner (e.g., by means of firmware).

[0149] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0150] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0151] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0152] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0153] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0154] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0155] An embodiment of the present invention further provides a computer program product, including a computer program, which, when executed by a processor, implements the gas water heater control method provided in any embodiment of the present application.

[0156] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present invention, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0157] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0158] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas water heater control method, characterized in that: An electric heating module is provided in the water circuit of the gas water heater, and the method comprises: When the gas water heater is in a gas underpressure state, increasing the current value of the gas proportional valve; Determine whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold; When the temperature difference between the set temperature and the outlet water temperature is greater than a first threshold, it is determined whether the difference between the actual current value and the theoretical current value of the gas proportional valve is greater than or equal to a preset value, wherein the theoretical current value is the current value required to make the outlet water temperature reach the set temperature under the current inlet water flow rate and inlet water temperature; When the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, the electric heating module is started and the heating power of the electric heating module is adjusted until the temperature difference between the set temperature and the water outlet temperature is less than a second threshold value, and the second threshold value is less than the first threshold value.

2. The gas water heater control method according to claim 1, characterized in that: Also includes: When the difference between the actual current value and the theoretical current value is less than a preset value, the current value of the gas proportional valve is increased or the number of fire strips in operation is increased until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold.

3. The gas water heater control method according to claim 2, characterized in that: Increasing the current value of the gas proportional valve or increasing the number of fire strips in working state until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value, including: Determine whether the number of fire bars currently in operation of the gas water heater has reached the maximum number of fire bars; When the number of fire grates currently in operation reaches the maximum number of fire grates, the current value of the gas proportional valve is increased until the temperature difference between the set temperature and the outlet water temperature is less than a second threshold value; When the number of fire bars currently in working state has not reached the maximum number of fire bars, the number of fire bars in working state is increased, and the step of determining whether the temperature difference between the user's set temperature and the outlet water temperature is greater than the first threshold is returned to execute until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

4. The gas water heater control method according to any one of claims 1 to 3, characterized in that: Also includes: When the temperature difference between the set temperature and the outlet water temperature is not greater than a first threshold, determining whether the temperature difference between the set temperature and the outlet water temperature is less than a second threshold; When the temperature difference between the set temperature and the outlet water temperature is less than a second threshold, maintaining the current combustion state of the gas water heater; When the temperature difference between the set temperature and the outlet water temperature is not less than a second threshold, the electric heating module is started and the heating power of the electric heating module is adjusted until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

5. The gas water heater control method according to any one of claims 1 to 3, characterized in that: The water inlet pipe of the gas water heater is provided with a first electric heating module, and the water outlet pipe of the gas water heater is provided with a second electric heating module. When the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, the first electric heating module is started. In the process of adjusting the heating power of the first electric heating module, the method further includes: Determining whether the heating power of the first electric heating module reaches the maximum heating power; When the heating power of the first electric heating module reaches the maximum heating power, determining whether the temperature difference between the set temperature and the outlet water temperature is less than a second threshold; When the temperature difference between the set temperature and the outlet water temperature is less than a second threshold, maintaining the current combustion state of the gas water heater and the heating state of the first electric heating module; When the temperature difference between the set temperature and the outlet water temperature is not less than a second threshold, the second electric heating module is started, and the heating power of the second electric heating module is adjusted until the temperature difference between the set temperature and the outlet water temperature is less than the second threshold.

6. The gas water heater control method according to claim 5, characterized in that: Also includes: When the gas water heater is in a standby state, if it is detected that the water inlet flow rate is greater than the start-up flow rate, the gas water heater is controlled to start combustion; If it is detected that the water inlet flow rate is greater than a preset flow rate, one of the electric heating modules is started, wherein the preset flow rate is greater than the start-up flow rate.

7. A gas water heater, characterized in that: include: A heat exchanger, wherein the water inlet of the heat exchanger is connected to the water inlet pipe, and the water outlet of the heat exchanger is connected to the water outlet pipe; A burner, wherein the burner and the heat exchanger are arranged in a combustion chamber, the flame nozzle of the burner faces the heat exchanger, and the burner is connected to a gas pipe; an igniter, the igniter being arranged on the burner; A gas proportional valve, the gas proportional valve being arranged on the gas pipe; An inlet water temperature sensor is provided on the inlet water pipe and is used to collect the inlet water temperature; An outlet water temperature sensor is disposed on the outlet water pipe and is used to collect the outlet water temperature; A water flow sensor, the water flow sensor is arranged on the water inlet pipe and is used to collect the water inlet flow; A first electric heating module, wherein the first electric heating module is arranged on the water inlet pipe; A second electric heating module, wherein the second electric heating module is arranged on the water outlet pipe; A controller, wherein the controller is respectively connected to the igniter, the gas proportional valve, the water inlet temperature sensor, the water outlet temperature sensor, the water flow sensor, the first electric heating module and the second electric heating module, and is used to execute the gas water heater control method as described in any one of claims 1-6.

8. A gas water heater control device, characterized in that: An electric heating module is provided in the water circuit of the gas water heater, and the device comprises: A proportional valve regulating module, used for increasing the current value of the gas proportional valve when the gas water heater is in a gas underpressure state; A first judgment module, used to judge whether the temperature difference between the user's set temperature and the outlet water temperature is greater than a first threshold; A second judgment module is used to judge whether the difference between the actual current value and the theoretical current value of the gas proportional valve is greater than or equal to a preset value when the temperature difference between the set temperature and the outlet water temperature is greater than a first threshold value, wherein the theoretical current value is the current value required to make the outlet water temperature reach the set temperature under the current inlet water flow rate and inlet water temperature; The electric heating start module is used to start the electric heating module when the difference between the actual current value and the theoretical current value is greater than or equal to a preset value, and adjust the heating power of the electric heating module until the temperature difference between the set temperature and the water outlet temperature is less than a second threshold value, and the second threshold value is less than the first threshold value.

9. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the gas water heater control method as described in any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the gas water heater control method as described in any one of claims 1 to 6 is implemented.

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