A heating gas water heater and its system, system control method, system control device and control equipment

Abstract

The present application relates to a control method, device, control equipment, water heater, heating gas water heater system and storage medium for a heating gas water heater system. The method includes: in the case of being in a heating mode, obtaining a first water flow rate, a first water temperature value and a second water temperature value; in response to the first water flow rate being greater than a water flow rate threshold, connecting a heating bypass pipe and shutting off the heating pipe, adjusting the combustion load according to a bathing water temperature setting value, and obtaining a third water temperature value; in response to the first target temperature difference being less than or equal to a first preset threshold, obtaining a second water flow rate and a fourth water temperature value, calculating a target water temperature value of a water outlet of the water heater, adjusting the combustion load according to the target water temperature value and obtaining a fifth water temperature value; in response to the second target temperature difference being less than a second preset threshold, obtaining a third water flow rate, adjusting the water flow rate of the heating bypass pipe according to the first target water flow rate and connecting the heating pipe. The present method can realize heating while using hot water.

Description

Technical Field

[0001] The present application relates to the technical field of gas water heaters, and in particular to a control method, device, control equipment, water heater, heating gas water heater system and storage medium for a heating gas water heater system. Background Art

[0002] When bathing in winter, the temperature in the bathroom is low, especially in the south where there is no central heating, which makes people feel cold and unable to bathe comfortably; in order to solve the above problem, the heating gas water heater system came into being. In traditional technology, the heating method of the heating gas water heater generally adopts heating first, then using hot water, and then heating again after the hot water is used up. However, the heating gas water heater system needs a process to heat up, which can easily make the bathroom of a house without central heating and poorly kept warm become cold again after using hot water, causing users to feel cold when changing clothes after using water. Summary of the invention

[0003] The first technical problem solved by the present invention is to provide a control method for a heating gas water heater system, which can realize heating while using hot water, avoid the bathroom of a house without central heating and poor insulation from becoming cold again after using hot water, prevent users from feeling cold when changing clothes after using water, and improve the user's bathing and heating experience.

[0004] The second technical problem solved by the present invention is to provide a control device for a heating gas water heater system, which can realize heating while using hot water, avoiding the bathroom of a house without central heating and poor insulation from becoming cold again after using hot water, preventing users from feeling cold when changing clothes after using water, and improving the user's bathing and heating experience.

[0005] The third technical problem solved by the present invention is to provide a control device that can achieve heating while using hot water, preventing bathrooms in houses without central heating and with poor thermal insulation from becoming cold again after using hot water, preventing users from feeling cold when changing clothes after using water, and improving users' bathing and heating experience.

[0006] The fourth technical problem solved by the present invention is to provide a water heater that can provide heating while using hot water, thereby preventing bathrooms in houses without central heating and with poor thermal insulation from becoming cold again after using hot water, preventing users from feeling cold when changing clothes after using water, and improving users' bathing and heating experience.

[0007] The fifth technical problem solved by the present invention is to provide a gas water heater system for heating, which can provide heating while using hot water, avoiding the bathroom in a house without central heating and poorly insulated from becoming cold again after using hot water, preventing users from feeling cold when changing clothes after using water, and improving the user's bathing and heating experience.

[0008] The first technical problem mentioned above is solved by the following technical solution:

[0009] A control method for a heating gas water heater system, the heating gas water heater system comprising: a water heater, a heating terminal, a hot water pipe and a cold water pipe; the heating terminal comprising a heating pipeline and a heating bypass pipeline; the water outlet of the water heater, the first end of the heating pipeline and the first end of the heating bypass pipeline are connected to the water inlet of the heating terminal; the second end of the heating pipeline, the second end of the heating bypass pipeline and the first end of the hot water pipe are connected to the water outlet of the heating terminal; the second end of the hot water pipe and one end of the cold water pipe are respectively used to be connected to a water point; the control method comprises:

[0010] In the case of being in the heating mode, obtaining a first water flow rate of a water inlet of the water heater, a first water temperature value of a water inlet of the heating terminal, and a second water temperature value of a water outlet of the heating terminal;

[0011] In response to the first water flow being greater than the water flow threshold, the heating bypass pipe is turned on and the heating pipe is turned off, the combustion load of the water heater is adjusted according to the bathing water temperature setting value, and a third water temperature value of the water outlet of the water heater is obtained after the combustion load is adjusted;

[0012] In response to the first target temperature difference being less than or equal to the first preset threshold, a second water flow rate at the water inlet of the water heater and a fourth water temperature value at the water outlet of the water heater are obtained, a target water temperature value at the water outlet of the water heater is calculated, the combustion load is adjusted according to the target water temperature value, and a fifth water temperature value at the water outlet of the water heater is obtained after adjusting the combustion load; the first target temperature difference refers to the absolute value of the difference between the third water temperature value and the bathing water temperature setting value; the target water temperature value is determined according to the first water flow rate, the first water temperature value, the second water temperature value, the second water flow rate and the fourth water temperature value; the first target water flow rate is determined according to the third water flow rate and the first water flow rate;

[0013] In response to the second target temperature difference being less than the second preset threshold, the third water flow rate at the water inlet of the water heater is obtained, the water flow rate of the heating bypass pipe is adjusted according to the first target water flow rate of the heating bypass pipe, and the heating pipe is turned on; the second target temperature difference refers to the absolute value of the difference between the fifth water temperature value and the target water outlet temperature value; the first target water flow rate is determined based on the third water flow rate.

[0014] Based on this, the control method of the above-mentioned heating gas water heater system can achieve heating while using hot water, avoiding the bathroom of a house without central heating and poor insulation from becoming cold again after using hot water, preventing users from feeling cold when changing clothes after using water, and improving the user's bathing and heating experience.

[0015] In one embodiment, the expression of the target water temperature value of the water outlet of the water heater is:

[0016]

[0017] Among them, T 目标 is the target water temperature; T 22 is the fourth water temperature value; M 11 is the first water flow rate; T 41 is the second water temperature value; T 31 is the first water temperature value; M 12 Therefore, the target water temperature value of the water outlet of the water heater 100 can be accurately calculated, which improves the convenience and accuracy of the control method of the heating gas water heater system.

[0018] In one of the embodiments, the step of obtaining the third water flow rate at the water inlet of the water heater also includes the step of obtaining the sixth water temperature value at the water inlet of the heating terminal and judging whether the third target temperature difference is greater than or equal to the third preset threshold value before the step of obtaining the third water flow rate at the water inlet of the water heater; the third target temperature difference refers to the difference between the sixth water temperature value and the bathing water temperature setting value; when the third target temperature difference is greater than or equal to the third preset threshold value, the third water flow rate at the water inlet of the water heater is obtained. Therefore, it is possible to accurately verify whether the water temperature value at the water inlet of the heating terminal rises in time after adjusting the combustion load of the water heater according to the target water temperature value, and it is also possible to timely understand whether the hot water reaches the water inlet of the heating terminal after adjusting the combustion load of the water heater, so as to ensure that the water temperature value at the water outlet of the heating terminal can reach the bathing water temperature setting value after the heating pipe is connected, further improving the user's bathing and heating experience.

[0019] In one embodiment, after the step of conducting the heating pipe, the step further includes: obtaining the seventh water temperature value of the water outlet of the heating terminal; in response to the fourth target temperature difference being greater than or equal to the fourth preset threshold, adjusting the water flow of the heating bypass pipe according to the seventh water temperature value; the fourth target temperature difference refers to the absolute value of the difference between the seventh water temperature value and the bathing water temperature setting value. Therefore, the convenience and accuracy of the control method of the heating gas water heater system are improved, and the user's bathing and heating experience is further enhanced.

[0020] In one embodiment, the step of adjusting the water flow of the heating bypass pipe according to the seventh water temperature value also includes the step of obtaining the fourth water flow of the heating bypass pipe; when the fourth water flow is less than the maximum water flow of the heating bypass pipe, the water flow of the heating bypass pipe is adjusted according to the seventh water temperature value, and the step of returning to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal; when the fourth water flow is equal to the maximum water flow, the combustion load is adjusted according to the fourth target temperature difference, and the step of returning to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal. Therefore, the convenience and accuracy of the control method of the heating gas water heater system are improved, and the user's bathing and heating experience is further enhanced.

[0021] In one embodiment, after the step of obtaining the seventh water temperature value of the water outlet of the heating terminal, the method further includes: in response to the fourth target temperature difference being less than the fourth preset threshold, obtaining the fifth water flow rate of the water inlet of the water heater, and returning to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal when the heating mode is in place and the fifth water flow rate is greater than the water flow rate threshold. Therefore, the convenience and accuracy of the control method of the heating gas water heater system are improved, and the user's bathing and heating experience is further enhanced.

[0022] In one embodiment, after the step of obtaining the fifth water flow rate of the water inlet of the water heater, the method further includes: when the fifth water flow rate is less than or equal to the water flow rate threshold, shutting off the heating bypass pipe, and adjusting the combustion load according to the heating temperature setting value. Therefore, the heating gas water heater system can be quickly switched from being in both the heating mode and the hot water supply mode to being in the heating mode only, which also improves the convenience and accuracy of the control method of the heating gas water heater system and reduces the waste of gas.

[0023] In one of the embodiments, after the step of obtaining the seventh water temperature value of the water outlet of the heating terminal, the step further includes: in response to the fourth target temperature difference being less than the fourth preset threshold value and not being in the heating mode, adjusting the combustion load according to the bathing water temperature setting value, shutting off the heating pipe after adjusting the combustion load, and adjusting the water flow of the heating bypass pipe to the maximum water flow of the heating bypass pipe. Therefore, the heating gas water heater system can be quickly switched from being in both the heating mode and the hot water supply mode to being only in the hot water supply mode, which also improves the convenience and accuracy of the control method for the heating gas water heater system and reduces the waste of gas. Therefore, the heating gas water heater system can be quickly switched from being in both the heating mode and the hot water supply mode to being only in the hot water supply mode, which also improves the convenience and accuracy of the control method for the heating gas water heater system and reduces the waste of gas.

[0024] In one embodiment, the step of shutting off the heating pipe after adjusting the combustion load and adjusting the water flow of the heating bypass pipe to the maximum water flow of the heating bypass pipe includes: obtaining the eighth water temperature value of the water outlet of the heating terminal after adjusting the combustion load; if the fifth target temperature difference is less than the fifth preset threshold, shutting off the heating pipe and adjusting the water flow of the heating bypass pipe to the maximum water flow of the heating bypass pipe; the fifth target temperature difference is the absolute value of the difference between the eighth water temperature value and the bathing water temperature setting value. Therefore, the heating gas water heater system can be quickly switched from being in both the heating mode and the hot water supply mode to being in the hot water supply mode only, which also improves the convenience and accuracy of the control method of the heating gas water heater system and reduces the waste of gas.

[0025] The above second technical problem is solved by the following technical solution:

[0026] A control device for a heating gas water heater system, the heating gas water heater system comprising: a water heater, a heating terminal, a hot water pipe and a cold water pipe; the heating terminal comprising a heating pipe and a heating bypass pipe; the water outlet of the water heater, the first end of the heating pipe and the first end of the heating bypass pipe are connected to the water inlet of the heating terminal; the second end of the heating pipe, the second end of the heating bypass pipe and the first end of the hot water pipe are connected to the water outlet of the heating terminal; the second end of the hot water pipe and one end of the cold water pipe are respectively used to connect to a water point. The above control device comprises a first acquisition module, a first control module, a second control module and a third control module.

[0027] The first acquisition module is used to acquire a first water flow rate at a water inlet of the water heater, a first water temperature value at a water inlet of the heating terminal, and a second water temperature value at a water outlet of the heating terminal when in a heating mode.

[0028] The first control module is used to, in response to the first water flow being greater than the water flow threshold, turn on the heating bypass pipe and turn off the heating pipe, adjust the combustion load of the water heater according to the bath water temperature setting value, and obtain a third water temperature value at the water outlet of the water heater after adjusting the combustion load.

[0029] The second control module is used to obtain the second water flow rate at the water inlet of the water heater and the fourth water temperature value at the water inlet of the water heater in response to the first target temperature difference being less than or equal to the first preset threshold, calculate the target water temperature value at the water outlet of the water heater, adjust the combustion load according to the target water temperature value, and obtain the fifth water temperature value at the water outlet of the water heater after adjusting the combustion load; the first target temperature difference refers to the absolute value of the difference between the third water temperature value and the bathing water temperature setting value; the target water temperature value is determined according to the first water flow rate, the first water temperature value, the second water temperature value, the second water flow rate and the fourth water temperature value; the first target water flow rate is determined according to the third water flow rate and the first water flow rate.

[0030] The third control module is used to obtain the third water flow rate at the water inlet of the water heater in response to the second target temperature difference being less than the second preset threshold, adjust the water flow rate of the heating bypass pipe according to the first target water flow rate of the heating bypass pipe, and connect the heating pipe; the second target temperature difference refers to the absolute value of the difference between the fifth water temperature value and the target water outlet temperature value; the first target water flow rate is determined based on the third water flow rate.

[0031] Based on this, the control device of the above-mentioned heating gas water heater system can achieve heating while using hot water, avoiding the bathroom of a house without central heating and poor insulation from becoming cold again after using hot water, preventing users from feeling cold when changing clothes after using water, and improving the user's bathing and heating experience.

[0032] The third technical problem mentioned above is solved by the following technical solution:

[0033] A control device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of any method in the above method embodiments are implemented.

[0034] The fourth technical problem mentioned above is solved by the following technical solution:

[0035] A water heater, comprising a first temperature sensor, a second temperature sensor, a first water flow sensor and any control device in the above device embodiments; wherein the first temperature sensor is arranged on the water inlet pipe of the water heater and connected to the control device; the second temperature sensor is arranged on the water outlet pipe of the water heater and connected to the control device; the first water flow sensor is arranged on the water inlet pipe of the water heater and connected to the control device. Therefore, the above water heater can enable the heating gas water heater system to achieve heating while using hot water, avoid the bathroom of a house without central heating and poor heat preservation from entering a cold state again after using hot water, prevent the user from feeling cold when changing clothes after using water, and improve the user's bathing and heating experience.

[0036] The fifth technical problem mentioned above is solved by the following technical solution:

[0037] A heating gas water heater system, the heating gas water heater system comprises a heating terminal, a hot water pipe, a cold water pipe and the water heater in the above embodiment; the heating terminal comprises a heating pipe and a heating bypass pipe; the water outlet of the water heater, the first end of the heating pipe and the first end of the heating bypass pipe are connected to the water inlet of the heating terminal; the second end of the heating pipe, the second end of the heating bypass pipe and the first end of the hot water pipe are connected to the water outlet of the heating terminal; the second end of the hot water pipe and one end of the cold water pipe are respectively used to connect to the water point. Therefore, the heating gas water heater system can realize heating while using hot water, avoid letting the bathroom of a house without central heating and poor heat preservation enter a cold state again after using hot water, prevent the user from feeling cold when changing clothes after using water, and improve the user's bathing and heating experience. Therefore, the heating gas water heater system can realize heating while using hot water, avoid letting the bathroom of a house without central heating and poor heat preservation enter a cold state again after using hot water, prevent the user from feeling cold when changing clothes after using water, and improve the user's bathing and heating experience.

[0038] In one embodiment, the heating terminal further includes a third temperature sensor, a fourth temperature sensor, a second water flow sensor, an electric regulating valve, and an electromagnetic valve; the third temperature sensor is arranged on the water inlet pipe of the heating terminal and connected to the control device; the fourth temperature sensor is arranged on the water outlet pipe of the heating terminal and connected to the control device; the second water flow sensor is arranged on the heating bypass pipe and connected to the control device; the electric regulating valve is arranged on the heating bypass pipe and connected to the control device; the electromagnetic valve is arranged on the heating pipe and connected to the control device. Therefore, the convenience of the heating gas water heater system is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 An application environment diagram of a control method for a heating gas water heater system in one embodiment;

[0040] Figure 2 A first flow chart of a control method for a heating gas water heater system in one embodiment;

[0041] Figure 3 A second flow chart of a control method for a heating gas water heater system in one embodiment;

[0042] Figure 4 A third flow chart of a control method for a heating gas water heater system in one embodiment;

[0043] Figure 5 It is a schematic flow chart of the control steps of the single hot water supply mode in one embodiment;

[0044] Figure 6is a structural block diagram of a control device for a heating gas water heater system in an embodiment;

[0045] Figure 7 is an internal structure diagram of a control device in one embodiment;

[0046] Figure 8 is an internal structure diagram of a water heater in one embodiment;

[0047] Fig. 9 FIG. 1 is an internal structural diagram of a heating gas water heater system in one embodiment. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0050] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0051] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0052] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0053] The embodiments of the present application provide a control method, device, control equipment, water heater, gas water heater system for heating and storage medium, which can realize heating while using hot water, avoid bathrooms in houses without central heating and poor thermal insulation from becoming cold again after using hot water, prevent users from feeling cold when changing clothes after using water, and improve the user's bathing and heating experience.

[0054] The following briefly describes the application environment of the control method for a heating gas water heater system provided by the embodiment of the present application. Figure 1 As shown, the application environment is a heating gas water heater system, and the heating gas water heater system includes a water heater 100, a heating terminal 200, a hot water pipe 300 and a cold water pipe 400. Among them, the heating terminal 200 includes a heating pipe 210 and a heating bypass pipe 220; the water outlet of the water heater 100, the first end of the heating pipe 210 and the first end of the heating bypass pipe 220 are connected to the water inlet of the heating terminal 200; the second end of the heating pipe 210, the second end of the heating bypass pipe 220 and the first end of the hot water pipe 300 are connected to the water outlet of the heating terminal 200; the second end of the hot water pipe 300 and one end of the cold water pipe 400 are respectively used to connect to the water use point. In addition, the control method of the heating gas water heater system provided in the present application can be applied to the following: Figure 1 In the control device of the water heater 100 shown.

[0055] In one embodiment, Figure 2 As shown, a control method for a heating gas water heater system is provided, and the method includes steps 202 to 208.

[0056] Step 202, when in heating mode, obtain a first water flow rate at a water inlet of the water heater, a first water temperature value at a water inlet of the heating terminal, and a second water temperature value at a water outlet of the heating terminal.

[0057] The water heater 100 may be a gas water heater. In a specific example, the water heater 100 may also be a zero-cold-water gas water heater. The above are only specific examples, and in actual applications, they can be flexibly set according to needs, and are not limited here.

[0058] When the heating gas water heater system is only in the heating mode, the controller of the water heater 100 obtains the first water flow rate at the water inlet of the water heater 100, the first water temperature value at the water inlet of the heating terminal 200, and the second water temperature value at the water outlet of the heating terminal 200; it should be noted that the present invention does not impose any restriction on the method of obtaining the first water flow rate at the water inlet of the water heater 100, the first water temperature value at the water inlet of the heating terminal 200, and the second water temperature value at the water outlet of the heating terminal 300.

[0059] In a specific example, a first water flow rate may be collected by a first water flow sensor disposed on the water inlet pipe of the water heater 100, a first water temperature value may be collected by a third temperature sensor disposed on the water inlet pipe of the heating terminal 200, and a second water temperature value may be collected by a fourth temperature sensor disposed on the water outlet pipe of the heating terminal 300. The above are only specific examples, which may be flexibly configured according to requirements in actual applications and are not limited here.

[0060] Step 204, in response to the first water flow being greater than the water flow threshold, the heating bypass pipe is turned on and the heating pipe is turned off, the combustion load of the water heater is adjusted according to the bathing water temperature setting value, and the third water temperature value of the water outlet of the water heater is obtained after adjusting the combustion load.

[0061] Among them, the water flow threshold is flexibly set according to the actual selected model of the water heater. The bathing water temperature setting value can be, but is not limited to, the water temperature required for bathing set by the user through the water heater 100. In a specific example, the bathing water temperature setting value is less than or equal to 48°C to ensure the safety of users of the heating gas water heater system. When the first water flow rate at the water inlet of the water heater 100 is greater than the water flow threshold, it means that the water point is in a water use state and the heating gas water heater system is in a heating mode, thereby turning on the heating bypass pipe 220 and turning off the heating pipe 210, and adjusting the combustion load of the gas water heater 100 according to the bathing water temperature setting value, so that the temperature of the water outlet of the water heater quickly reaches the bathing water temperature setting value. At the same time, after adjusting the combustion load of the water heater 100 according to the bathing water temperature setting value, the third water temperature value of the water outlet of the water heater 100 is obtained. It should be noted that the present invention does not impose any restrictions on the method for obtaining the third water temperature value of the water outlet of the above-mentioned water heater 100, the method for controlling the on-off state of the heating bypass pipe 220, and the method for controlling the on-off state of the heating pipe 210.

[0062] In a specific example, the third water temperature value can be collected by a third temperature sensor disposed on the water outlet pipe of the water heater 100, and the on-off state of the heating bypass pipe 220 and the water flow through the heating bypass pipe 220 can be controlled by an electric regulating valve disposed on the heating bypass pipe 220, and the on-off state of the heating pipe 210 can be controlled by a solenoid valve disposed on the heating pipe 210. The above are only specific examples, and can be flexibly set according to needs in actual applications, and are not limited here.

[0063] In a specific example, adjusting the combustion load of the gas water heater 100 according to the bath water temperature setting value specifically includes: calculating the first ideal combustion load of the gas water heater 100 according to the bath water temperature setting value, and then adjusting the combustion load of the gas water heater 100 according to the calculated first ideal combustion load of the gas water heater 100. It is understandable that the combustion load of the gas water heater 100 can be adjusted by adjusting the gas flow of the gas water heater or the fan speed in the combustion chamber of the gas water heater. The above is only a specific example, and it can be flexibly set according to needs in actual applications, and is not limited here.

[0064] In one of the embodiments, the control method of the heating gas water heater system further includes: in response to the first water flow rate being less than or equal to the water flow rate threshold, returning to the step of obtaining the first water flow rate at the water inlet of the water heater, the first water temperature value at the water inlet of the heating terminal, and the second water temperature value at the water outlet of the heating terminal. It is understandable that when the first water flow rate is less than or equal to the water flow rate threshold, it means that the water point is not in a water use state at this time and the heating gas water heater system is only in a heating mode. It is necessary to continue to obtain the first water flow rate at the water inlet of the water heater, the first water temperature value at the water inlet of the heating terminal, and the second water temperature value at the water outlet of the heating terminal in the heating mode, so as to promptly discover whether there is a phenomenon of water use at the water point. Therefore, the convenience and accuracy of the control method of the heating gas water heater system are improved.

[0065] Step 206, in response to the first target temperature difference being less than or equal to the first preset threshold value, obtain the second water flow rate of the water inlet of the water heater and the fourth water temperature value of the water outlet of the water heater, calculate the target water temperature value of the water outlet of the water heater, adjust the combustion load according to the target water temperature value, and obtain the fifth water temperature value of the water outlet of the water heater after adjusting the combustion load.

[0066] Among them, the first target temperature difference refers to the absolute value of the difference between the third water temperature value and the bathing water temperature setting value; the target water temperature value is determined according to the first water flow, the first water temperature value, the second water temperature value, the second water flow and the fourth water temperature value; the first target water flow is determined according to the third water flow and the first water flow.

[0067] The controller of the water heater 100 calculates according to the third water temperature value of the water outlet of the water heater 100 and the bathing water temperature setting value to obtain the first target temperature difference; when the first target temperature difference is less than or equal to the first preset threshold value, it means that the water temperature at the water outlet of the water heater 100 is equivalent to the bathing water temperature setting value at this time, thereby obtaining the second water flow rate at the water inlet of the water heater 100 and the fourth water temperature value at the water outlet of the water heater 100; it is also possible to timely understand that when the heating gas water heater system is only in the hot water supply mode and the water temperature at the water outlet of the water heater 100 is equivalent to the bathing water temperature setting value, the water temperature value at the water outlet of the water heater 100, i.e., the third water temperature value, and the water flow value at the water inlet of the water heater 100, i.e., the second water flow rate. At the same time, the controller of the water heater 100 calculates according to the first water flow rate, the first water temperature value, the second water temperature value, the second water flow rate and the fourth water temperature value to obtain the target water temperature value of the water outlet of the water heater 100, so that the target water temperature value can be used to know the water temperature value that the water outlet of the water heater 100 needs to reach when the heating gas water heater system is in the heating mode and the hot water supply mode at the same time, and adjust the combustion load of the water heater 100 according to the above-mentioned target water temperature value, and obtain the fifth water temperature value of the water outlet of the water heater 100 after adjusting the combustion load of the water heater 100 according to the above-mentioned target water temperature value.

[0068] It should be noted that the present invention does not impose any restrictions on the above-mentioned method of obtaining the second water flow rate of the water inlet of the water heater 100, the fourth water temperature value of the water outlet of the water heater 100, and the fifth water temperature value of the water outlet of the water heater 100. In a specific example, the second water flow rate can be collected by the above-mentioned first water flow sensor arranged in the water inlet pipe of the water heater 100, and the fourth water temperature value and the fifth water temperature value can be collected by the above-mentioned third temperature sensor arranged in the water outlet pipe of the water heater 100. The above are only specific examples, which can be flexibly set according to needs in actual applications and are not limited here.

[0069] In a specific example, adjusting the combustion load of the gas water heater 100 according to the target water temperature value specifically includes: calculating the second ideal combustion load of the gas water heater 100 according to the target water temperature value, and then adjusting the combustion load of the gas water heater 100 according to the calculated second ideal combustion load of the gas water heater 100. It is understandable that the combustion load of the gas water heater 100 can be adjusted by adjusting the gas flow of the gas water heater or the fan speed in the combustion chamber of the gas water heater. The above is only a specific example, and it can be flexibly set according to needs in actual applications, and is not limited here.

[0070] In one embodiment, the target water temperature value of the water outlet of the water heater 100 is expressed as:

[0071]

[0072] Among them, T 目标 is the target water temperature; T 22 is the fourth water temperature value; M 11 is the first water flow rate; T 41 is the second water temperature value; T 31 is the first water temperature value; M 12 Therefore, the target water temperature value of the water outlet of the water heater 100 can be accurately calculated, which improves the convenience and accuracy of the control method of the heating gas water heater system.

[0073] In a specific example, for the convenience of calculation, the energy loss of each pipeline in the heating gas water heater system is ignored in the calculation process of the target water temperature value of the water outlet of the water heater 100 .

[0074] The heating energy expression of the heating gas water heater system when it is only in heating mode is:

[0075] Q 供暖 =CM 11 (T 41 -T 31 )

[0076] Among them, Q 供暖 is the heating energy when the heating gas water heater system is only in heating mode; C is the specific heat capacity; M 11 is the first water flow rate; T 41 is the second water temperature value; T 31 is the first water temperature value.

[0077] The heating energy expression when the heating gas water heater system is only in hot water supply mode is:

[0078] Q 供热水 =CM 12 (T 22 -T 12 )

[0079] Among them, Q 供热水 is the heating energy when the heating gas water heater system is only in the hot water supply mode; C is the specific heat capacity; M 12 is the second water flow rate; T 21 is the water temperature value at the water inlet of the water heater 100 when the heating gas water heater system is only in the hot water supply mode; T 22 It is the fourth water temperature value.

[0080] Assuming that the water flow rate at the water inlet of the water heater 100 when the heating gas water heater system is only in the hot water supply mode and the water flow rate at the water inlet of the water heater 100 when the heating gas water heater system is in both the hot water supply mode and the heating mode remains unchanged, it can be obtained:

[0081] CM 12 (T 目标 -T 12 )=CM 11 (T 41 -T 31 )+CM 12 (T 22 -T 21 )

[0082] By simplification, the expression of the target water temperature value of the water outlet of the water heater 100 can be obtained as follows:

[0083]

[0084] Among them, T 目标 is the target water temperature; T 22 is the fourth water temperature value; M 11 is the first water flow rate; T 41 is the second water temperature value; T 31 is the first water temperature value; M 12 The above are only specific examples, which can be flexibly set according to needs in actual applications and are not limited here.

[0085] In one embodiment, the control method of the heating gas water heater system further includes: in response to the first target temperature difference being greater than the first preset threshold, returning to the step of adjusting the combustion load of the water heater according to the bathing water temperature setting value. When the first target temperature difference is greater than the first preset threshold, it means that the water temperature at the outlet of the water heater 100 is greatly different from the bathing water temperature setting value, and it is necessary to further adjust the combustion load of the water heater 100 according to the bathing water temperature setting value so that the water temperature at the outlet of the water heater 100 is equivalent to the bathing water temperature setting value. Therefore, the convenience and accuracy of the control method of the heating gas water heater system are improved.

[0086] Step 208, in response to the second target temperature difference being less than the second preset threshold, obtain the third water flow rate of the water inlet of the water heater, adjust the water flow rate of the heating bypass pipe according to the first target water flow rate of the heating bypass pipe, and turn on the heating pipe.

[0087] Among them, the second target temperature difference refers to the difference between the fifth water temperature value and the target water outlet temperature value. The first target water flow rate is determined according to the third water flow rate. When the second target temperature difference is less than the second preset threshold value, it means that the fifth water temperature value of the water outlet of the water heater 100 obtained after adjusting the combustion load of the water heater 100 according to the target water temperature value is equivalent to the target water outlet temperature value of the water heater 100, and the third water flow rate of the water inlet of the water heater 100 is obtained at this time. The first target water flow rate is determined according to the above third water flow rate, and the water flow rate of the heating bypass pipe 220 can be adjusted according to the first target water flow rate of the heating bypass pipe 220, and the heating pipe 210 is connected, so that the heating gas water heater system can provide heating and hot water at the same time, and ensure that the water temperature at the user point is equivalent to the bathing water temperature setting value.

[0088] In a specific example, the expression of the first target water flow rate of the heating bypass pipe is:

[0089] M 目标 =M 13 -M 11

[0090] Among them, M 目标 is the first target water flow rate of the heating bypass pipe 220; M 13 is the third water flow rate of the water inlet of the water heater 100; M 11 The above are only specific examples, which can be flexibly set according to needs in actual applications and are not limited here.

[0091] Based on this, when in the heating mode, a first water flow rate at the water inlet of the water heater, a first water temperature value at the water inlet of the heating terminal and a second water temperature value at the water outlet of the heating terminal are obtained; then, in response to the first water flow rate being greater than the water flow rate threshold, the heating bypass pipe is turned on and the heating pipe is turned off, the combustion load of the water heater is adjusted according to the bathing water temperature setting value, and the third water temperature value of the water outlet of the water heater is obtained after adjusting the combustion load; then, in response to the first target temperature difference being less than or equal to the first preset threshold, the second water flow rate at the water inlet of the water heater and the fourth water temperature value at the water outlet of the water heater are obtained, and the water outlet temperature of the water heater is calculated. The target water temperature value of the water outlet is obtained, the combustion load is adjusted according to the target water temperature value, and the fifth water temperature value of the water outlet of the water heater is obtained after adjusting the combustion load; finally, in response to the second target temperature difference being less than the second preset threshold value, the third water flow rate of the water inlet of the water heater is obtained, the water flow rate of the heating bypass pipe is adjusted according to the first target water flow rate of the heating bypass pipe, and the heating pipe is connected, so as to realize heating while using hot water, avoid that the bathroom of a house without central heating and poor insulation becomes cold again after using hot water, prevent the user from feeling cold when changing clothes after using water, and improve the user's bathing and heating experience.

[0092] In one embodiment, before the step of obtaining the third water flow rate at the water inlet of the water heater, the method further includes the step of obtaining the sixth water temperature value at the water inlet of the heating terminal and determining whether the third target temperature difference is greater than or equal to the third preset threshold value. Furthermore, when the third target temperature difference is greater than or equal to the third preset threshold value, the third water flow rate at the water inlet of the water heater is obtained.

[0093] Among them, the third target temperature difference refers to the difference between the sixth water temperature value and the bathing water temperature setting value. When the second target temperature difference is less than the second preset threshold value, it means that the fifth water temperature value of the water outlet of the water heater 100 obtained after adjusting the combustion load of the water heater 100 according to the target water temperature value is equivalent to the target water outlet temperature value of the water outlet of the water heater 100. Since there is a certain distance between the water outlet of the water heater 100 and the water inlet of the heating terminal 200, it is necessary to further obtain the sixth water temperature value of the water inlet of the heating terminal 200, and determine whether the difference between the sixth water temperature value and the bathing water temperature setting value, that is, the third target temperature difference, is greater than or equal to the third preset threshold value, so as to verify whether the water temperature value of the water inlet of the heating terminal 200 rises in time after adjusting the combustion load of the water heater 100 according to the target water temperature value, and whether the hot water after adjusting the combustion load of the water heater 100 reaches the water inlet of the heating terminal 200 can be timely understood. At the same time, when the third target temperature difference is greater than or equal to the third preset threshold value, it means that the water temperature value at the water inlet of the heating terminal 200 rises in time, and the steps of obtaining the third water flow rate at the water inlet of the water heater 100, adjusting the water flow rate of the heating bypass pipe 220 according to the first target water flow rate of the heating bypass pipe 220, and connecting the heating pipe 210 can be executed.

[0094] In this embodiment, the above steps can accurately verify whether the water temperature value at the water inlet of the heating terminal 200 rises in time after the combustion load of the water heater 100 is adjusted according to the target water temperature value, and whether the hot water reaches the water inlet of the heating terminal 200 after adjusting the combustion load of the water heater 100 can be timely understood, so as to ensure that the water temperature value at the water outlet of the heating terminal 200 can reach the bathing water temperature setting value after the heating pipe 210 is connected, thereby further improving the user's bathing and heating experience.

[0095] In one embodiment, the step of determining whether the third target temperature difference is greater than or equal to the third preset threshold value further includes: when the third target temperature difference is greater than or equal to the third preset threshold value, returning to the step of obtaining the sixth water temperature value of the water inlet of the heating terminal.

[0096] When the third target temperature difference is greater than or equal to the third preset threshold, it means that the water temperature value of the water inlet of the heating terminal 200 has not risen in time, and it is necessary to return to the step of obtaining the sixth water temperature value of the water inlet of the heating terminal, and wait for the moment when the third target temperature difference is greater than or equal to the third preset threshold, that is, the moment when the water temperature value of the water inlet of the heating terminal 200 rises. Therefore, the convenience and accuracy of the control method for the heating gas water heater system are improved.

[0097] In one embodiment, if Figure 3 As shown, the step of conducting the heating pipe also includes:

[0098] Step 209, obtaining the seventh water temperature value of the water outlet of the heating terminal;

[0099] Step 210, in response to the fourth target temperature difference being greater than or equal to the fourth preset threshold, adjusting the water flow rate of the heating bypass pipe according to the seventh water temperature value.

[0100] Among them, the fourth target temperature difference refers to the absolute value of the difference between the seventh water temperature value and the bathing water temperature setting value. After adjusting the water flow of the heating bypass pipe according to the first target water flow of the heating bypass pipe and connecting the heating pipe, the heating gas water heater system can realize heating while using hot water; then, the seventh water temperature value of the water outlet of the heating terminal 200 is obtained through the controller of the water heater 100; and when the difference between the seventh water temperature value and the bathing water temperature setting value, that is, the fourth target temperature difference, is greater than or equal to the fourth preset threshold value, it means that the water temperature value of the water outlet of the heating terminal 200 is relatively different from the bathing water temperature setting value, and it is necessary to further adjust the water flow of the heating bypass pipe 220 according to the seventh water temperature value so that the water temperature value of the water outlet of the heating terminal 200 is equivalent to the bathing water temperature setting value. Therefore, the convenience and accuracy of the control method of the heating gas water heater system are improved, and the user's bathing and heating experience is further improved.

[0101] In one embodiment, the step of adjusting the water flow rate of the heating bypass pipe according to the seventh water temperature value also includes the step of obtaining the fourth water flow rate of the heating bypass pipe; when the fourth water flow rate is less than the maximum water flow rate of the heating bypass pipe, the water flow rate of the heating bypass pipe is adjusted according to the seventh water temperature value, and the step of returning to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal; when the fourth water flow rate is equal to the maximum water flow rate, the combustion load is adjusted according to the fourth target temperature difference, and the step of returning to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal.

[0102] Among them, when the difference between the seventh water temperature value and the bathing water temperature setting value, i.e., the fourth target temperature difference, is greater than or equal to the fourth preset threshold value, it means that the water temperature value of the water outlet of the heating terminal 200 is greatly different from the bathing water temperature setting value, and the fourth water flow rate of the heating bypass pipe 220 is further obtained, so as to timely understand whether the heating bypass pipe 220 is at the maximum water flow rate of the heating bypass pipe 220 through the fourth water flow rate. Moreover, when the fourth water flow rate is less than the maximum water flow rate of the heating bypass pipe 220, it means that there is still room for adjustment of the heating bypass pipe 220, so the water flow rate of the heating bypass pipe is adjusted according to the seventh water temperature value, so that the water temperature value of the water outlet of the heating terminal 200 is equivalent to the bathing water temperature setting value, and return to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal. At the same time, when the fourth water flow rate is equal to the maximum water flow rate, it means that there is no adjustment space for the heating bypass pipe 220, and the combustion load can only be adjusted according to the fourth target temperature difference to make the water temperature value of the outlet of the heating terminal 200 equivalent to the bathing water temperature setting value, and return to the step of obtaining the seventh water temperature value of the outlet of the heating terminal.

[0103] In this embodiment, through the above steps, when there is no adjustment space in the heating bypass pipe 220, the combustion load can be adjusted according to the fourth target temperature difference so that the water temperature value at the outlet of the heating terminal 200 is equivalent to the bathing water temperature setting value, thereby improving the convenience and accuracy of the control method of the heating gas water heater system and further enhancing the user's bathing and heating experience.

[0104] In one embodiment, if Figure 4 As shown, after the step of obtaining the seventh water temperature value of the water outlet of the heating terminal, the step further includes:

[0105] Step 211, in response to the fourth target temperature difference being less than the fourth preset threshold, obtain the fifth water flow rate at the water inlet of the water heater, and when in heating mode and the fifth water flow rate is greater than the water flow threshold, return to the step of obtaining the seventh water temperature value at the water outlet of the heating terminal.

[0106] Among them, when the difference between the seventh water temperature value and the bathing water temperature setting value, that is, the fourth target temperature difference, is less than the fourth preset threshold value, it means that the water temperature value of the water outlet of the heating terminal 200 is equivalent to the bathing water temperature setting value, then it is necessary to obtain the fifth water flow of the water heater 100, and further determine whether the heating gas water heater system is still in the heating mode, and whether the fifth water flow is greater than the water flow threshold; at the same time, when the heating gas water heater system is still in the heating mode and the fifth water flow is greater than the water flow threshold, it means that the heating gas water heater system still needs to supply water and heat at the same time, so it is necessary to return to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal, so as to adjust the water flow of the heating bypass pipe according to the seventh water temperature value again to maintain the constant temperature control of the water outlet of the heating terminal. Therefore, the convenience and accuracy of the control method of the heating gas water heater system are improved, and the user's bathing and heating experience is further improved.

[0107] In one embodiment, if Figure 4 As shown, after the step of obtaining the fifth water flow rate of the water inlet of the water heater, the step further includes:

[0108] Step 212, when the fifth water flow rate is less than or equal to the water flow rate threshold, shut off the heating bypass pipe and adjust the combustion load according to the heating temperature setting value.

[0109] The heating temperature setting value may be, but is not limited to, the ambient temperature required for heating set by the user through the water heater 100. When the fifth water flow rate of the water heater 100 is less than or equal to the water flow rate threshold, it means that the water point is not in a water use state at this time, and the heating gas water heater system can exit the hot water supply mode and only needs to be in the heating mode, so the heating bypass pipe 220 is immediately shut down, and the combustion load of the water heater 100 is adjusted according to the heating temperature setting value.

[0110] In a specific example, adjusting the combustion load of the water heater 100 according to the heating temperature setting value specifically includes: calculating the third ideal combustion load of the gas water heater 100 according to the heating temperature setting value, and then adjusting the combustion load of the gas water heater 100 according to the calculated third ideal combustion load of the gas water heater 100. It is understandable that the combustion load of the gas water heater 100 can be adjusted by adjusting the gas flow of the gas water heater or the fan speed in the combustion chamber of the gas water heater. The above is only a specific example, and it can be flexibly set according to needs in actual applications, and is not limited here.

[0111] In this embodiment, by accurately identifying that the heating gas water heater system needs to exit the hot water supply mode when the fifth water flow rate is less than or equal to the water flow rate threshold, and by promptly shutting off the heating bypass pipe 220 and adjusting the combustion load of the water heater 100 according to the heating temperature setting value, the heating gas water heater system can be quickly switched from being in both the heating mode and the hot water supply mode to being in only the heating mode, thereby improving the convenience and accuracy of the control method of the heating gas water heater system and reducing gas waste.

[0112] In one embodiment, if Figure 4 As shown, after the step of obtaining the seventh water temperature value of the water outlet of the heating terminal, the step further includes:

[0113] Step 213, in response to the fourth target temperature difference being less than the fourth preset threshold and not in heating mode, adjusting the combustion load according to the bath water temperature setting value, shutting off the heating pipe after adjusting the combustion load, and adjusting the water flow of the heating bypass pipe to the maximum water flow of the heating bypass pipe.

[0114] Among them, when the fourth target temperature difference is less than the fourth preset threshold value and is not in the heating mode, it means that the water temperature value of the water outlet of the heating terminal 200 is equivalent to the bathing water temperature setting value, but the heating gas water heater system needs to exit the heating mode and only be in the hot water supply mode, so the combustion load of the water heater 100 is adjusted according to the bathing water temperature setting value to reduce the waste of gas; at the same time, the heating pipe 210 is shut down after adjustment according to the bathing water temperature setting value, and the water flow of the heating bypass pipe 220 is adjusted to the maximum water flow of the heating bypass pipe 220.

[0115] In this embodiment, when the fourth target temperature difference is less than the fourth preset threshold value and the system is not in the heating mode, the heating mode is exited in time, and the combustion load is adjusted according to the bath water temperature setting value. After adjusting the combustion load, the heating pipe is shut down, and the water flow rate of the heating bypass pipe is adjusted to the maximum water flow rate of the heating bypass pipe, so that the heating gas water heater system can be quickly switched from being in both the heating mode and the hot water supply mode to being in the hot water supply mode only, thereby improving the convenience and accuracy of the control method of the heating gas water heater system and reducing gas waste.

[0116] In one embodiment, if Figure 5 As shown, the steps of shutting off the heating pipe after adjusting the combustion load and adjusting the water flow of the heating bypass pipe to the maximum water flow of the heating bypass pipe include:

[0117] Step 501, obtaining an eighth water temperature value of a water outlet of a heating terminal after adjusting the combustion load;

[0118] Step 502: If the fifth target temperature difference is less than the fifth preset threshold, the heating pipe is turned off, and the water flow of the heating bypass pipe is adjusted to the maximum water flow of the heating bypass pipe.

[0119] Among them, the fifth target temperature difference is the absolute value of the difference between the eighth water temperature value and the bathing water temperature setting value. After adjusting the combustion load of the water heater 100 according to the bathing water temperature setting value, the eighth water temperature value of the water outlet of the heating terminal 200 is obtained. When the difference between the eighth water temperature value and the bathing water temperature setting value, that is, the fifth target temperature difference, is less than the fifth preset threshold value, it means that the combustion load of the water heater 100 is adjusted according to the bathing water temperature setting value more accurately, and the water temperature at the water outlet of the heating terminal 200 can be made equivalent to the bathing water temperature setting value, so as to shut off the heating pipe in time and adjust the water flow of the heating bypass pipe to the maximum water flow of the heating bypass pipe. Therefore, through the above steps, the heating gas water heater system can be quickly switched from being in the heating mode and the hot water supply mode at the same time to being in the hot water supply mode only, which also improves the convenience and accuracy of the control method of the heating gas water heater system and reduces the waste of gas.

[0120] In one embodiment, if Figure 5 As shown, after the step of obtaining the eighth water temperature value of the water outlet of the heating terminal after adjusting the combustion load, the step further includes:

[0121] Step 503, if the fifth target temperature difference is greater than or equal to the fifth preset threshold, then return to the step of adjusting the combustion load according to the bath water temperature setting value, shutting off the heating pipe after adjusting the combustion load, and adjusting the water flow of the heating bypass pipe to the maximum water flow of the heating bypass pipe. Therefore, the convenience and accuracy of the control method of the heating gas water heater system are improved.

[0122] It should be understood that although Figure 1-5 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 1-5 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0123] In one embodiment, Figure 6As shown, a control device for a heating gas water heater system is provided, and the heating gas water heater system includes: a water heater, a heating terminal, a hot water pipe and a cold water pipe; the heating terminal includes a heating pipe and a heating bypass pipe; the water outlet of the water heater, the first end of the heating pipe and the first end of the heating bypass pipe are connected to the water inlet of the heating terminal; the second end of the heating pipe, the second end of the heating bypass pipe and the first end of the hot water pipe are connected to the water outlet of the heating terminal; the second end of the hot water pipe and one end of the cold water pipe are respectively used to connect to the water point. The above control device includes a first acquisition module 610, a first control module 620, a second control module 630 and a third control module 640.

[0124] The first acquisition module 610 is used to acquire a first water flow rate at a water inlet of the water heater, a first water temperature value at a water inlet of a heating terminal, and a second water temperature value at a water outlet of the heating terminal when in a heating mode.

[0125] The first control module 620 is used to, in response to the first water flow being greater than the water flow threshold, turn on the heating bypass pipe and turn off the heating pipe, adjust the combustion load of the water heater according to the bath water temperature setting value, and obtain the third water temperature value of the water outlet of the water heater after adjusting the combustion load.

[0126] The second control module 630 is used to obtain the second water flow rate at the water inlet of the water heater and the fourth water temperature value at the water inlet of the water heater in response to the first target temperature difference being less than or equal to the first preset threshold, calculate the target water temperature value at the water outlet of the water heater, adjust the combustion load according to the target water temperature value, and obtain the fifth water temperature value at the water outlet of the water heater after adjusting the combustion load; the first target temperature difference refers to the absolute value of the difference between the third water temperature value and the bathing water temperature setting value; the target water temperature value is determined according to the first water flow rate, the first water temperature value, the second water temperature value, the second water flow rate and the fourth water temperature value; the first target water flow rate is determined according to the third water flow rate and the first water flow rate.

[0127] The third control module 640 is used to obtain the third water flow rate at the water inlet of the water heater in response to the second target temperature difference being less than the second preset threshold value, adjust the water flow rate of the heating bypass pipe according to the first target water flow rate of the heating bypass pipe, and connect the heating pipe; the second target temperature difference refers to the difference between the fifth water temperature value and the target water outlet temperature value; the first target water flow rate is determined based on the third water flow rate.

[0128] In one embodiment, the expression of the target water temperature value of the water outlet of the water heater is:

[0129]

[0130] Among them, T 目标 is the target water temperature; T 22 is the fourth water temperature value; M 11is the first water flow rate; T 41 is the second water temperature value; T 31 is the first water temperature value; M 12 is the second water flow rate.

[0131] In one embodiment, the third control module 640 is also used to execute the step of obtaining the sixth water temperature value of the water inlet of the heating terminal before the step of obtaining the third water flow rate at the water inlet of the water heater, and judging whether the third target temperature difference is greater than or equal to the third preset threshold value; the third target temperature difference refers to the difference between the sixth water temperature value and the bathing water temperature setting value; the third control module 640 is also used to obtain the third water flow rate at the water inlet of the water heater when the third target temperature difference is greater than or equal to the third preset threshold value.

[0132] In one embodiment, the control device further includes a fourth control module. The first acquisition module 610 is further used to acquire the seventh water temperature value of the water outlet of the heating terminal; the fourth control module is used to adjust the water flow of the heating bypass pipe according to the seventh water temperature value in response to the fourth target temperature difference being greater than or equal to the fourth preset threshold; the fourth target temperature difference refers to the absolute value of the difference between the seventh water temperature value and the bathing water temperature setting value.

[0133] In one embodiment, the fourth control module is also used to execute the step of obtaining the fourth water flow rate of the heating bypass pipe before the step of adjusting the water flow rate of the heating bypass pipe according to the seventh water temperature value; the fourth control module is also used to adjust the water flow rate of the heating bypass pipe according to the seventh water temperature value when the fourth water flow rate is less than the maximum water flow rate of the heating bypass pipe, and return to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal; the fourth control module is also used to adjust the combustion load according to the fourth target temperature difference when the fourth water flow rate is equal to the maximum water flow rate, and return to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal.

[0134] In one embodiment, the fourth control module is also used to obtain the fifth water flow rate at the water inlet of the water heater in response to the fourth target temperature difference being less than the fourth preset threshold value, and return to the step of obtaining the seventh water temperature value at the water outlet of the heating terminal when the heating mode is in place and the fifth water flow rate is greater than the water flow threshold value.

[0135] In one of the embodiments, the fourth control module is further configured to shut off the heating bypass pipe and adjust the combustion load according to the heating temperature setting value when the fifth water flow rate is less than or equal to the water flow rate threshold.

[0136] In one of the embodiments, the fourth control module is further used to adjust the combustion load according to the bath water temperature setting value in response to the fourth target temperature difference being less than a fourth preset threshold and not in the heating mode, shut off the heating pipe after adjusting the combustion load, and adjust the water flow of the heating bypass pipe to the maximum water flow of the heating bypass pipe.

[0137] In one embodiment, the fourth control module is also used to obtain the eighth water temperature value of the water outlet of the heating terminal after adjusting the combustion load; the fourth control module is also used to shut down the heating pipe and adjust the water flow rate of the heating bypass pipe to the maximum water flow rate of the heating bypass pipe when the fifth target temperature difference is less than the fifth preset threshold value; the fifth target temperature difference is the absolute value of the difference between the eighth water temperature value and the bathing water temperature setting value.

[0138] The specific definition of the control device of the heating gas water heater system can be found in the definition of the control method of the heating gas water heater system mentioned above, which will not be repeated here. Each module in the above-mentioned control device of the heating gas water heater system can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0139] In one embodiment, a control device 840 is provided. The control device 840 may be a terminal, and its internal structure diagram may be as follows: Figure 7 As shown. The control device 840 includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the control device 840 is used to provide computing and control capabilities. The memory of the control device 840 includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the control device 840 is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a control method for a heating gas water heater system is implemented. The display screen of the control device 840 can be a liquid crystal display screen or an electronic ink display screen, and the input device of the control device 840 can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the housing of the control device 840, or an external keyboard, touchpad or mouse.

[0140] Those skilled in the art will understand that Figure 7The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the control device 840 to which the scheme of the present application is applied. The specific control device 840 may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0141] In one embodiment, a control device 840 is provided. The control device 840 includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the steps of any method in the above method embodiments are implemented.

[0142] In one embodiment, Figure 8 As shown, a water heater 100 is provided, which includes a first temperature sensor 810, a second temperature sensor 820, a first water flow sensor 830, and any control device 840 in the above-mentioned device embodiments.

[0143] Among them, the first temperature sensor 810 is arranged on the water inlet pipe of the water heater 100 and connected to the control device 840, and can be used to collect the water temperature value of the water inlet of the water heater 100 at any time. The second temperature sensor 820 is arranged on the water outlet pipe of the water heater 100 and connected to the control device 840, and can be used to collect the water temperature value of the water outlet of the water heater 100 at any time. The first water flow sensor 830 is arranged on the water inlet pipe of the water heater 100 and connected to the control device 840, so as to collect the water flow rate of the water inlet of the water heater 100 at any time.

[0144] In one embodiment, if Figure 8 As shown, the water heater 100 further includes a circulation pump 850 . The circulation pump 850 is disposed on a water inlet pipe of the water heater 100 and is connected to a control device 840 .

[0145] In addition, the water heater 100 may be a gas water heater. In a specific example, the water heater 100 may also be a zero cold water gas water heater. The above are only specific examples, and in actual applications, they can be flexibly set according to needs, and are not limited here.

[0146] In this embodiment, the water heater 100 can enable the heating gas water heater system to provide heating while using hot water, thereby preventing the bathroom in a house without central heating and poorly insulated from becoming cold again after using hot water, preventing the user from feeling cold when changing clothes after using water, and improving the user's bathing and heating experience.

[0147] In one embodiment, Figure 1As shown, a heating gas water heater system is provided, which includes a heating terminal 200, a hot water pipe 300, a cold water pipe 400 and the water heater 100 in the above embodiment; the heating terminal 200 includes a heating pipe 210 and a heating bypass pipe 220; the water outlet of the water heater 100, the first end of the heating pipe 210 and the first end of the heating bypass pipe 220 are connected to the water inlet of the heating terminal 200; the second end of the heating pipe 210, the second end of the heating bypass pipe 220 and the first end of the hot water pipe 300 are connected to the water outlet of the heating terminal 200; the second end of the hot water pipe 300 and one end of the cold water pipe 400 are respectively used to connect to the water point. It should be noted that in order to ensure the realization of the function, the water resistance of the heating bypass pipe 220 needs to be designed to be smaller than the water resistance of the heating channel 210.

[0148] In this embodiment, the above-mentioned heating gas water heater system can achieve heating while using hot water, preventing the bathroom in a house without central heating and poor insulation from becoming cold again after using hot water, preventing users from feeling cold when changing clothes after using water, and improving the user's bathing and heating experience.

[0149] In one embodiment, if Fig. 9 As shown, the heating terminal 200 also includes a third temperature sensor 230 , a fourth temperature sensor 240 , a second water flow sensor 250 , an electric regulating valve 260 , and a solenoid valve 270 .

[0150] Among them, the third temperature sensor 230 is arranged on the water inlet pipe of the heating terminal 200 and connected to the control device 840, which can be used to collect the water temperature value of the water inlet of the heating terminal 200 at any time. The fourth temperature sensor 240 is arranged on the water outlet pipe of the heating terminal 200 and connected to the control device 840, which can be used to collect the water temperature value of the water outlet of the heating terminal 200 at any time. The second water flow sensor 250 is arranged on the heating bypass pipe 220 and connected to the control device 840, which can be used to collect the water flow of the heating bypass pipe 220 at any time. The electric regulating valve 260 is arranged on the heating bypass pipe 220 and connected to the control device 840, which can be used to control the on-off state of the heating bypass pipe 220 and the water flow through the heating bypass pipe 220; the solenoid valve 270 is arranged on the heating pipe 210 and connected to the control device 840, which can be used to control the on-off state of the heating pipe 210. Therefore, the convenience of the heating gas water heater system is improved.

[0151] In one embodiment, if Fig. 9 As shown, the heating gas water heater system further includes a check valve 500, which is connected between the hot water pipe and the cold water pipe.

[0152] In a specific example, the solenoid valve 270 can be but is not limited to a two-position two-way solenoid valve, and the electric control valve 260 can be but is not limited to a normally open electric control valve. The above is only a specific example. In actual applications, it can be flexibly set according to needs and is not limited here.

[0153] In a specific example, if Fig. 9 As shown, the heating terminal 200 also includes a heat exchange fan 280, an air inlet channel 290, a heating heat exchanger 291 and a fifth temperature sensor 292. Among them, the heating heat exchanger 291 is arranged on the heating pipe 210 and connected to the control device 840, which can be used to transfer the energy of the water in the heating pipe 210; the air inlet channel 290 is arranged at the heating heat exchanger 291, the heat exchange fan 280 is arranged in the air inlet channel 290, and is connected to the control device 840; the fifth temperature sensor 292 is arranged at the air inlet channel 290, and is connected to the control device 840, and can collect the ambient temperature at the air inlet channel. The above is only a specific example, which can be flexibly set according to needs in actual applications and is not limited here.

[0154] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any method in the above method embodiments are implemented.

[0155] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0156] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0157] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A control method for a heating gas water heater system, characterized in that: The heating gas water heater system comprises: a water heater, a heating terminal, a hot water pipe and a cold water pipe; the heating terminal comprises a heating pipe and a heating bypass pipe; the water outlet of the water heater, the first end of the heating pipe and the first end of the heating bypass pipe are connected to the water inlet of the heating terminal; the second end of the heating pipe, the second end of the heating bypass pipe and the first end of the hot water pipe are connected to the water outlet of the heating terminal; the second end of the hot water pipe and one end of the cold water pipe are respectively used to be connected to a water use point; the control method comprises: In the case of being in heating mode, obtaining a first water flow rate of a water inlet of the water heater, a first water temperature value of a water inlet of the heating terminal, and a second water temperature value of a water outlet of the heating terminal; In response to the first water flow being greater than a water flow threshold, the heating bypass pipe is turned on and the heating pipe is turned off, the combustion load of the water heater is adjusted according to a bathing water temperature setting value, and a third water temperature value of a water outlet of the water heater is obtained after the combustion load is adjusted; In response to the first target temperature difference being less than or equal to the first preset threshold, a second water flow rate at the water inlet of the water heater and a fourth water temperature value at the water outlet of the water heater are obtained, a target water temperature value at the water outlet of the water heater is calculated, the combustion load is adjusted according to the target water temperature value, and a fifth water temperature value at the water outlet of the water heater is obtained after adjusting the combustion load; the first target temperature difference refers to the absolute value of the difference between the third water temperature value and the bathing water temperature setting value; the target water temperature value is determined according to the first water flow rate, the first water temperature value, the second water temperature value, the second water flow rate and the fourth water temperature value; In response to the second target temperature difference being less than the second preset threshold, the third water flow rate at the water inlet of the water heater is obtained, the water flow rate of the heating bypass pipe is adjusted according to the first target water flow rate of the heating bypass pipe, and the heating pipe is opened; the second target temperature difference refers to the absolute value of the difference between the fifth water temperature value and the target water outlet temperature value; the first target water flow rate is determined based on the third water flow rate and the first water flow rate.

2. The method according to claim 1, characterized in that The expression of the target water temperature value of the water outlet of the water heater is: Among them, T 目标 is the target water temperature value; T 22 is the fourth water temperature value; M 11 is the first water flow rate; T 41 is the second water temperature value; T 31 is the first water temperature value; M 12 is the second water flow rate.

3. The method according to claim 1, characterized in that The step of obtaining the third water flow rate at the water inlet of the water heater also includes obtaining the sixth water temperature value at the water inlet of the heating terminal and judging whether the third target temperature difference is greater than or equal to a third preset threshold value; the third target temperature difference refers to the difference between the sixth water temperature value and the bathing water temperature setting value; When the third target temperature difference is greater than or equal to the third preset threshold, a third water flow rate of the water inlet of the water heater is obtained.

4. The method according to claim 1, characterized in that: After the step of conducting the heating pipeline, the step further includes: Obtaining a seventh water temperature value of a water outlet of the heating terminal; In response to the fourth target temperature difference being greater than or equal to the fourth preset threshold, the water flow of the heating bypass pipe is adjusted according to the seventh water temperature value; the fourth target temperature difference refers to the absolute value of the difference between the seventh water temperature value and the bathing water temperature setting value.

5. The method according to claim 4, characterized in that Before the step of adjusting the water flow rate of the heating bypass pipe according to the seventh water temperature value, the step of obtaining a fourth water flow rate of the heating bypass pipe is also included; When the fourth water flow rate is less than the maximum water flow rate of the heating bypass pipe, the water flow rate of the heating bypass pipe is adjusted according to the seventh water temperature value, and the process returns to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal; When the fourth water flow rate is equal to the maximum water flow rate, the combustion load is adjusted according to the fourth target temperature difference, and the process returns to the step of obtaining the seventh water temperature value of the water outlet of the heating terminal.

6. The method according to claim 4, characterized in that After the step of obtaining the seventh water temperature value of the water outlet of the heating terminal, the step further includes: In response to the fourth target temperature difference being less than the fourth preset threshold, the fifth water flow rate at the water inlet of the water heater is obtained, and when in heating mode and the fifth water flow rate is greater than the water flow threshold, the process returns to the step of obtaining the seventh water temperature value at the water outlet of the heating terminal.

7. The method according to claim 6, characterized in that After the step of obtaining the fifth water flow rate of the water inlet of the water heater, the following step is further included: When the fifth water flow rate is less than or equal to the water flow rate threshold, the heating bypass pipeline is shut off and the combustion load is adjusted according to the heating temperature setting value.

8. The method according to claim 4, characterized in that After the step of obtaining the seventh water temperature value of the water outlet of the heating terminal, the step further includes: In response to the fourth target temperature difference being less than the fourth preset threshold and not being in the heating mode, the combustion load is adjusted according to the bath water temperature setting value, the heating pipe is shut off after adjusting the combustion load, and the water flow of the heating bypass pipe is adjusted to the maximum water flow of the heating bypass pipe.

9. The method according to claim 8, characterized in that The step of shutting off the heating pipeline after adjusting the combustion load and adjusting the water flow of the heating bypass pipeline to the maximum water flow of the heating bypass pipeline comprises: obtaining an eighth water temperature value of the water outlet of the heating terminal after adjusting the combustion load; If the fifth target temperature difference is less than the fifth preset threshold, the heating pipe is shut down and the water flow of the heating bypass pipe is adjusted to the maximum water flow of the heating bypass pipe; the fifth target temperature difference is the absolute value of the difference between the eighth water temperature value and the bathing water temperature setting value.

10. A control device for a heating gas water heater system, characterized in that: The heating gas water heater system comprises: a water heater, a heating terminal, a hot water pipe and a cold water pipe; the heating terminal comprises a heating pipe and a heating bypass pipe; the water outlet of the water heater, the first end of the heating pipe and the first end of the heating bypass pipe are connected to the water inlet of the heating terminal; the second end of the heating pipe, the second end of the heating bypass pipe and the first end of the hot water pipe are connected to the water outlet of the heating terminal; the second end of the hot water pipe and one end of the cold water pipe are respectively used to be connected to a water point; the control device comprises: A first acquisition module is used to acquire, when in a heating mode, a first water flow rate of a water inlet of the water heater, a first water temperature value of a water inlet of the heating terminal, and a second water temperature value of a water outlet of the heating terminal; a first control module, configured to, in response to the first water flow being greater than a water flow threshold, conduct the heating bypass pipe and shut off the heating pipe, adjust the combustion load of the water heater according to a bathing water temperature setting value, and obtain a third water temperature value of a water outlet of the water heater after adjusting the combustion load; a second control module, for obtaining, in response to a first target temperature difference being less than or equal to a first preset threshold, a second water flow rate at a water inlet of the water heater and a fourth water temperature value at the water inlet of the water heater, calculating a target water temperature value at a water outlet of the water heater, adjusting the combustion load according to the target water temperature value, and obtaining a fifth water temperature value at the water outlet of the water heater after adjusting the combustion load; the first target temperature difference refers to a difference between the third water temperature value and the bathing water temperature setting value; the target water temperature value is determined according to the first water flow rate, the first water temperature value, the second water temperature value, the second water flow rate and the fourth water temperature value; A third control module is used to obtain a third water flow rate at the water inlet of the water heater in response to the second target temperature difference being less than a second preset threshold value, adjust the water flow rate of the heating bypass pipe according to the first target water flow rate of the heating bypass pipe, and connect the heating pipe; the second target temperature difference refers to the difference between the fifth water temperature value and the target water outlet temperature value; the first target water flow rate is determined based on the third water flow rate and the first water flow rate.

11. A control device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 9 are implemented.

12. A water heater, characterized in that: The water heater includes a first temperature sensor, a second temperature sensor, a first water flow sensor and a control device as described in claim 11; wherein, the first temperature sensor is arranged on the water inlet pipe of the water heater and connected to the control device; the second temperature sensor is arranged on the water outlet pipe of the water heater and connected to the control device; the first water flow sensor is arranged on the water inlet pipe of the water heater and connected to the control device.

13. A heating gas water heater system, characterized in that: The heating gas water heater system includes a heating terminal, a hot water pipe, a cold water pipe and a water heater as described in claim 12; the heating terminal includes a heating pipe and a heating bypass pipe; the water outlet of the water heater, the first end of the heating pipe and the first end of the heating bypass pipe are connected to the water inlet of the heating terminal; the second end of the heating pipe, the second end of the heating bypass pipe and the first end of the hot water pipe are connected to the water outlet of the heating terminal; the second end of the hot water pipe and one end of the cold water pipe are respectively used to connect to a water use point.

14. The heating gas water heater system according to claim 13, characterized in that: The heating terminal also includes a third temperature sensor, a fourth temperature sensor, a second water flow sensor, an electric regulating valve, and a solenoid valve; the third temperature sensor is arranged on the water inlet pipe of the heating terminal and connected to the control device; the fourth temperature sensor is arranged on the water outlet pipe of the heating terminal and connected to the control device; the second water flow sensor is arranged on the heating bypass pipe and connected to the control device; the electric regulating valve is arranged on the heating bypass pipe and connected to the control device; the solenoid valve is arranged on the heating pipe and connected to the control device.

Images