Domestic hot water leakage detection method, device, equipment and storage medium

Abstract

The present application relates to the technical field of water leakage detection, and in particular to a water leakage detection method, device, equipment and storage medium for domestic hot water, wherein the water heater includes a water tank and a heat exchange tube passing through the water tank; the water leakage detection method includes: introducing high-temperature gas into the heat exchange tube; monitoring the temperature t1 of the high-temperature gas before entering the heat exchange tube and the temperature t2 when the high-temperature gas is discharged from the heat exchange tube; if t1 is greater than t2, heat is exchanged between the high-temperature gas in the heat exchange tube and the water in the water tank, and the water tank is in an unused state, and it is determined that the water heater has a water leakage problem; the water leakage detection method for domestic hot water can provide real-time feedback on whether there is a water leakage in the domestic hot water pipeline of the user's home, and the water leakage problem can be discovered in time.

Description

Technical Field

[0001] The present application relates to the technical field of water leakage detection, and in particular to a method, device, equipment and storage medium for detecting water leakage of domestic hot water. Background Art

[0002] A water flow switch is a device that detects water flow. Its operating principle is that when the water flow in a pipeline exceeds a set value, Q1, the magnetic core is displaced by the water flow, driving a magnetic source to generate a magnetic control effect, causing the sensor to conduct. When the water flow in the pipeline falls below Q1, the core, under the thrust of a return spring, drives the magnetic source back to its original position, causing the sensor to disconnect. A water flow switch is primarily installed as an insert in a water-medium pipeline. It provides feedback on whether the water flow in the system exceeds a set value, Q1. When the water flow exceeds Q1, the switch conducts, transmitting the conduction signal to the unit. Upon receiving the signal, the system responds with a corresponding instruction, improving unit reliability and preventing abnormal operation. The commonly used method of water leakage detection is to judge by the water flow detected by the water meter. Most of them detect water leakage by judging the single-use flow or the continuous water production time. For example, an upper limit value is preset for the water consumption per unit time or the water use time in the user's home. When the water consumption per unit time exceeds the upper limit value or the water use time exceeds the upper limit value through monitoring the water flow, an alarm is issued. Although this method of judging water use can avoid serious losses to a certain extent, there are problems of false alarms or water leakage occurring after a certain period of time. It is still impossible to monitor the occurrence of water leakage in the first time, especially for slow water leakage in the home, these detection methods cannot monitor in real time. Summary of the Invention

[0003] The purpose of the present application is to provide a method, device, equipment and storage medium for detecting leakage of domestic hot water, which can provide real-time feedback on whether there is leakage in the domestic hot water pipeline of the user's home, and can detect leakage problems in time.

[0004] To this end, in the first aspect, an embodiment of the present application provides a water leakage detection method for a water heater, wherein the water heater includes a water tank and a heat exchange tube passing through the water tank; the water leakage detection method includes: introducing high-temperature gas into the heat exchange tube; monitoring the temperature t1 of the high-temperature gas before entering the heat exchange tube and the temperature t2 when the high-temperature gas is discharged from the heat exchange tube; if t1 is greater than t2, heat is exchanged between the high-temperature gas in the heat exchange tube and the water in the water tank, and the water tank is in a non-use state, and it is determined that the water heater has a water leakage problem.

[0005] In one possible implementation, the water tank is connected to a water supply pipe and a water supply pipe; the water leakage detection method also includes: monitoring the water flow Q1 of the water supply pipe or the water supply pipe, and comparing Q1 with a preset value Q2; if Q1 is greater than or equal to Q2, and the water tank is in a non-use state, it is determined that the water heater has a water leakage problem; if Q1 is less than Q2, and t1 is greater than t2, it is determined that the water tank has a water leakage problem.

[0006] In one possible implementation, a water flow switch is provided on the water supply pipe or the water supply pipe, and the water flow Q1 is monitored by the water flow switch; when Q1 is greater than or equal to Q2, the water flow switch is in the on state; when Q1 is less than Q2, the water flow switch is in the off state.

[0007] In a possible implementation, the method further includes: issuing an alarm message when there is a water leakage problem in the water heater.

[0008] In a second aspect, an embodiment of the present application provides a water leakage detection device for a water heater, wherein the water heater includes a water tank; and is characterized in that the water leakage detection device includes: an execution module, configured to introduce high-temperature gas into a heat exchange tube passing through the water tank; a monitoring module, configured to monitor the temperature t1 of the high-temperature gas before entering the heat exchange tube and the temperature t2 when the high-temperature gas is discharged from the heat exchange tube; and a judgment module, configured so that if t1 is greater than t2, heat exchange occurs between the high-temperature gas in the heat exchange tube and the water in the water tank, and if the water tank is not in use, it is determined that there is a water leakage problem.

[0009] In one possible implementation, the water tank is connected to a water supply pipe and a water supply pipe; the monitoring module is further configured to monitor the water flow Q1 of the water supply pipe or the water supply pipe, and compare Q1 with a preset value Q2; the judgment module is further configured to judge that the water heater has a water leakage problem if Q1 is greater than or equal to Q2 and the water tank is in a non-use state; if Q1 is less than Q2 and t1 is greater than t2, then the water tank is judged to have a water leakage problem.

[0010] In one possible implementation, a water flow switch is provided on the water supply pipe or the water supply pipe, and the judgment module monitors the water flow Q1 through the water flow switch; when Q1 is greater than or equal to Q2, the water flow switch is in the on state; when Q1 is less than Q2, the water flow switch is in the off state.

[0011] In a possible implementation, the water heater further includes an alarm unit configured to issue an alarm message when there is a water leakage problem in the water heater.

[0012] In a third aspect, an embodiment of the present application provides a water leakage detection device for domestic hot water, comprising: a memory storing computer program instructions; and a processor, which implements the water leakage detection method as described above when the computer program instructions are executed by the processor.

[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which includes instructions. When the instructions are executed on a computer, the computer executes the water leakage detection method as described above.

[0014] According to the leakage detection method, device, equipment and storage medium for domestic hot water provided in the embodiments of the present application, the leakage detection method continuously introduces high-temperature gas into the heat exchange tube in the water tank of the water heater, and the water in the water tank and the high-temperature gas in the heat exchange tube have formed a stable state, that is, there is no heat exchange between the high-temperature gas in the heat exchange tube and the water in the water tank. By monitoring the temperature t1 of the high-temperature gas before entering the heat exchange tube and the temperature t2 when it is discharged from the heat exchange tube; if t1 is greater than t2, it is determined that there is heat exchange between the high-temperature gas in the heat exchange tube and the water in the water tank, and there is water replenishment in the water tank. If the water tank is not in use, it is determined that there is a water leakage problem in the water heater. Real-time feedback can be given to whether there is a water leakage in the domestic hot water pipeline of the user's home, and the water leakage problem can be discovered in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In addition, in the drawings, the same reference numerals are used for the same components, and the drawings are not drawn according to the actual scale.

[0016] Figure 1 A flow chart showing a method for detecting water leakage in a water heater according to an embodiment of the present application is shown;

[0017] Figure 2 A flowchart illustrating another water leakage detection method provided by an embodiment of the present application is shown;

[0018] Figure 3 Show Figure 2 Flowchart of the water leakage detection method shown;

[0019] Figure 4 A schematic structural diagram of a water heater leakage detection device provided in an embodiment of the present application is shown;

[0020] Figure 5A schematic structural diagram of a water leakage detection device for a water heater provided in an embodiment of the present application is shown.

[0021] Description of reference numerals:

[0022] 1. Water tank; 2. Heat exchange tube; 3. Water supply pipe; 4. Water supply pipe; 5. Water flow switch; 6. First temperature sensor; 7. Second temperature sensor; 8. Compressor; 9. Four-way valve; 10. Shell and tube heat exchanger; 11. First electronic expansion valve; 12. Flash evaporator; 13. Spray enthalpy valve; 14. Second electronic expansion valve; 15. Fin heat exchanger; 16. Gas-liquid separator; 17. Execution module; 18. Monitoring module; 19. Judgment module; 20. Alarm unit. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] Figure 1 A flow chart showing a method for detecting water leakage in a water heater according to an embodiment of the present application is shown; Figure 2 A flowchart illustrating another water leakage detection method provided by an embodiment of the present application is shown; Figure 3 Show Figure 2 Flowchart of the water leakage detection method shown.

[0025] like Figures 1 to 3 As shown, an embodiment of the present application provides a water leakage detection method for a water heater, wherein the water heater includes a water tank 1 and a heat exchange tube 2 passing through the water tank 1 .

[0026] Water leak detection methods include:

[0027] Step S1: introducing high-temperature gas into the heat exchange tube 2;

[0028] Step S2: monitoring the temperature t1 of the high-temperature gas before it enters the heat exchange tube 2 and the temperature t2 of the high-temperature gas when it exits the heat exchange tube 2;

[0029] Step S3: If t1 is greater than t2, the high-temperature gas in the heat exchange tube 2 exchanges heat with the water in the water tank 1, and the water tank 1 is in an unused state, and it is determined that the water heater has a water leakage problem.

[0030] In the present application, by continuously introducing high-temperature gas into the heat exchange tube 2 in the water tank 1 of the water heater, the water in the water tank 1 and the high-temperature gas in the heat exchange tube 2 have formed a stable state, that is, there is no heat exchange between the high-temperature gas in the heat exchange tube 2 and the water in the water tank 1. By monitoring the temperature t1 of the high-temperature gas before entering the heat exchange tube 2 and the temperature t2 when it is discharged from the heat exchange tube 2; if t1 is greater than t2, it is judged that there is heat exchange between the high-temperature gas in the heat exchange tube 2 and the water in the water tank 1, and there is water replenishment in the water tank 1. If the water tank 1 is not in use, it is judged that there is a water leakage problem in the water heater. It can provide real-time feedback on whether there is a water leakage in the user's home hot water pipeline, and the water leakage problem can be discovered in time.

[0031] Specifically, when judging whether the water heater has a water leakage problem, monitor whether the water heater is in use. If the water heater is in use, the water tank 1 is naturally in a water replenishment state. The newly added water entering the water tank 1 will lower the water temperature inside the water tank 1, thereby causing the high-temperature gas in the heat exchange tube 2 to exchange heat with the water in the water tank 1. It is then impossible to judge whether the water heater has a water leakage problem. When it is detected that the water heater is not in use, if there is no water replenishment in the water tank 1, the high-temperature gas in the heat exchange tube 2 will not exchange heat with the water in the water tank 1. The temperature t1 of the high-temperature gas before entering the heat exchange tube 2 is equal to the temperature t2 when it is discharged from the heat exchange tube 2. In this case, it can be determined that there is no water leakage in the water tank 1. When the water tank 1 of the water heater is not in use and there is water replenishment, as long as there is new water added, the water temperature inside the water tank 1 will be lowered, causing the high-temperature gas in the heat exchange tube 2 to exchange heat with the water in the water tank 1. The temperature t1 of the high-temperature gas before entering the heat exchange tube 2 is greater than the temperature t2 when it is discharged from the heat exchange tube 2. If the phenomenon of t1 being greater than t2 persists for a period of time, it can be determined that there is a water leakage in the water tank 1 of the water heater. Specifically, the duration can be set to ensure that the high-temperature gas in the heat exchange tube 2 reaches the same temperature as the water in the water tank 1.

[0032] In some embodiments, the water tank 1 is connected to a water supply pipe 3 and a water supply pipe 4; the water leakage detection method further includes:

[0033] Step S4: monitoring the water flow Q1 of the water supply pipe 3 or the water supply pipe 4, and comparing Q1 with a preset value Q2;

[0034] Step S5: If Q1 is greater than or equal to Q2, and the water tank 1 is not in use, it is determined that the water heater has a water leakage problem;

[0035] Step S6: If Q1 is less than Q2 and t1 is greater than t2, it is determined that the water tank 1 has a water leakage problem.

[0036] In the present application, whether the water tank 1 has a water leakage problem is determined by directly monitoring whether the water tank 1 has a water replenishment phenomenon. Specifically, when monitoring whether the water heater is in normal use, if the water heater is in normal use, the water tank 1 itself is in a water replenishment state, and there is no need to determine whether the water tank 1 of the water heater has a water leakage problem. If the water heater is not in use, it can be determined that the water heater has a water leakage problem if the water flow rate Q1 of the water replenishment pipe 3 or the water supply pipe 4 is greater than the preset value Q2. However, the monitoring of the water flow rate Q1 has certain limitations. When the water flow rate Q1 is less than the preset value Q2, it is impossible to monitor whether the water tank 1 has a water leakage problem based on the water flow rate. At this time, by comparing the temperature t1 of the high-temperature gas before entering the heat exchange tube 2 and the temperature t2 when it exits the heat exchange tube 2, if t1 is greater than t2, it is determined that the water tank 1 has a water leakage problem. If t1 is equal to t2, it is determined that the water tank 1 does not have a water leakage problem.

[0037] Furthermore, a water flow switch 5 is provided on the water supply pipe 3 or the water supply pipe 4, and the water flow Q1 is monitored by the water flow switch 5;

[0038] Step S41: When Q1 is greater than or equal to Q2, the water flow switch 5 is in the on state;

[0039] Step S42: When Q1 is less than Q2, the water flow switch 5 is in the off state.

[0040] In this application, the water flow switch 5 is primarily installed in a plug-in manner within a water medium pipeline, and is used to provide feedback on whether the water flow in the water system is greater than a set value Q2. The operating principle is that when the water flow in the pipeline is greater than the set value Q2, the magnetic core is displaced by the water flow and drives the magnetic source to generate a magnetic control effect, causing the sensor to conduct. When the water flow in the pipeline is less than Q2, the magnetic core, under the thrust of the reset spring, drives the magnetic source back to its original position, causing the sensor to disconnect. For problems with full water leakage that cannot be monitored, this application combines water flow monitoring with temperature change monitoring to achieve real-time monitoring of water heater leakage, allowing for more timely detection of water leakage problems.

[0041] In the prior art, the commonly used water leakage detection method is to judge by the water flow detected by the water meter. Most of them are performed by judging the single-use flow rate or the continuous water production time. For example, an upper limit is preset for the water consumption per unit time or the water use time of the user's home. When the water consumption per unit time exceeds the upper limit or the water use time exceeds the upper limit through monitoring the water flow, an alarm is issued. Although this method of judging water use can avoid serious losses to a certain extent, there are problems such as false alarms or water leakage occurring after a certain period of time. It is still impossible to monitor the occurrence of water leakage in the first place, especially for the case of slow water leakage in the home, these detection methods cannot monitor in real time. Compared with the water meter detection method, the present application can detect water leakage problems in a timely manner and avoid false alarms.

[0042] In some embodiments, further comprising:

[0043] Step S7: When there is a water leakage problem in the water heater, an alarm message is issued.

[0044] In this application, when it is determined that the water heater has a water leakage problem, an alarm message is issued to the user. The alarm message can be an audible or visual alarm or the alarm message can be sent to the user's mobile phone terminal for alarm or to the water supply monitoring platform to which it belongs.

[0045] The water leakage detection method continuously introduces high-temperature gas into the heat exchange tube 2 in the water tank 1 of the water heater. The water in the water tank 1 and the high-temperature gas in the heat exchange tube 2 have formed a stable state, that is, there is no heat exchange between the high-temperature gas in the heat exchange tube 2 and the water in the water tank 1. By monitoring the temperature t1 of the high-temperature gas before entering the heat exchange tube 2 and the temperature t2 when it is discharged from the heat exchange tube 2; if t1 is greater than t2, it is determined that there is heat exchange between the high-temperature gas in the heat exchange tube 2 and the water in the water tank 1, and there is water replenishment in the water tank 1. If the water tank 1 is not in use, it is determined that there is a water leakage problem in the water heater. Real-time feedback can be given to whether there is a water leakage in the user's home hot water pipeline, so that the water leakage problem can be discovered in time.

[0046] Figure 5 A schematic structural diagram of a water leakage detection device for a water heater provided in an embodiment of the present application is shown.

[0047] like Figure 5 As shown, the embodiment of the present application provides a water leakage detection device for a water heater, the water heater includes a water tank 1; the water leakage detection device includes: an execution module 17, a monitoring module 18 and a judgment module 19, wherein:

[0048] The execution module 17 is configured to pass high-temperature gas into the heat exchange tube 2 that passes through the water tank 1;

[0049] The monitoring module 18 is configured to monitor the temperature t1 of the high-temperature gas before it enters the heat exchange tube 2 and the temperature t2 of the high-temperature gas when it exits the heat exchange tube 2;

[0050] The judgment module 19 is configured to judge that if t1 is greater than t2, the high-temperature gas in the heat exchange tube 2 is exchanging heat with the water in the water tank 1, and if the water tank 1 is not in use, it is judged that there is a water leakage problem.

[0051] According to the water leakage detection device provided in the embodiment of the present application, high-temperature gas is continuously introduced into the heat exchange tube 2 passing through the water tank 1 through the execution module 17, and the temperature of the high-temperature gas remains unchanged; the temperature t1 of the high-temperature gas before entering the heat exchange tube 2 and the temperature t2 when it is discharged from the heat exchange tube 2 are monitored by the monitoring module 18, and the judgment module 19 is based on the temperature t1 before the high-temperature gas enters the heat exchange tube 2 and the temperature t2 when it is discharged from the heat exchange tube 2. If the water heater is not in use and t1 is greater than t2, then there is heat exchange between the high-temperature gas in the heat exchange tube 2 and the water in the water tank 1. If the water tank 1 is not in use, it is judged that there is a water leakage problem; if the water heater is not in use and t1 is equal to t2, then there is no heat exchange between the high-temperature gas in the heat exchange tube 2 and the water in the water tank 1, and it is judged that there is no water leakage problem in the water tank 1.

[0052] In some embodiments, the water tank 1 is connected with a water supply pipe 3 and a water supply pipe 4;

[0053] The monitoring module 18 is further configured to monitor the water flow rate Q1 of the water supply pipe 3 or the water supply pipe 4 and compare Q1 with a preset value Q2;

[0054] The judgment module 19 is further configured to judge that the water heater has a water leakage problem if Q1 is greater than or equal to Q2 and the water tank 1 is in a non-use state; if Q1 is less than Q2 and t1 is greater than t2, then judge that the water tank 1 has a water leakage problem.

[0055] In the present application, the monitoring module 18 can also be used to monitor the water flow rate Q1 of the water supply pipe 3 or the water supply pipe 4 and compare Q1 with the preset value Q2. If the water heater is in use, it is impossible to determine whether the water tank 1 is leaking. If the water heater is not in use and Q1 is greater than or equal to Q2, the judgment module 19 can determine that the water heater has a water leak. If the water heater is not in use and Q1 is less than Q2, it is impossible to determine whether the water heater has a water leak based on the water flow rate. In this case, the water heater is judged to have a water leak based on whether the high-temperature gas exchanges heat with the water in the water tank 1. This dual judgment ensures the accuracy of water heater leakage detection.

[0056] In some embodiments, a water flow switch 5 is provided on the water supply pipe 3 or the water supply pipe 4, and the judgment module 19 monitors the water flow Q1 through the water flow switch 5; when Q1 is greater than or equal to Q2, the water flow switch 5 is in the on state; when Q1 is less than Q2, the water flow switch 5 is in the off state.

[0057] In this application, the water flow switch 5 is installed on the water supply pipe 3 or the water supply pipe 4 to detect the water flow rate. When Q1 is greater than or equal to Q2, the water flow switch 5 is in the on state, and the on signal is sent to the judgment module 19 to determine that the water tank 1 is leaking. When Q1 is less than Q2, the water flow switch 5 is in the off state, and the off signal is sent to the judgment module 19. The judgment module 19 determines the water leakage based on whether the temperature of the high-temperature gas changes before and after the heat exchange tube 2. Of course, when Q1 is greater than or equal to Q2, the judgment module 19 can also make a judgment based on the temperature change of the high-temperature gas.

[0058] In some embodiments, an alarm unit 20 is further included. The alarm unit 20 is configured to issue an alarm message when there is a water leakage problem in the water heater.

[0059] In this application, when the judgment module 19 determines that there is a water leakage problem, an alarm message will be issued through the alarm unit 20. The alarm message can be sent in the form of sound and light alarm, alarm message to the user terminal, or alarm message to the monitoring platform of the water supply department to deal with the water leakage problem in a timely manner.

[0060] like Figure 5 As shown, specifically, the execution module 17 includes a compressor 8 and a heat exchange tube 2 running through the water tank 1 , and the high-temperature and high-pressure gas from the compressor 8 enters the heat exchange tube 2 to exchange heat with the water in the water tank 1 .

[0061] It can be understood that the water leakage detection device provided in the embodiment of the present application is the executor of the aforementioned water leakage detection method. For the specific execution method of each module, please refer to the content of the aforementioned water leakage detection method, which will not be repeated here.

[0062] Figure 4 A schematic structural diagram of a water heater leakage detection device provided in an embodiment of the present application is shown;

[0063] like Figure 4 As shown, in addition, an embodiment of the present application provides a water leakage detection device for domestic hot water, including: a memory storing computer program instructions; a processor, which implements the above-mentioned water leakage detection method when the computer program instructions are executed by the processor.

[0064] The execution module 17 also includes a four-way valve 9, the input end of the four-way valve 9 is connected to the output end of the heat exchange tube 2, and the gas coming out of the heat exchange tube 2 enters the shell and tube heat exchanger 10 through the four-way valve 9. After heat exchange with water and condensing into a high-pressure room-temperature liquid, it is throttled by the first electronic expansion valve 11 and then enters the flash evaporator 12. The gas in the upper part of the flash evaporator 12 passes through the spray enthalpy valve 13 and enters the air supply inlet of the compressor 8, completing the intermediate air supply circuit; and the medium-temperature refrigerant liquid at the bottom of the flash evaporator 12 is further throttled by the second electronic expansion valve 14 and enters the outdoor fin heat exchanger 15 to exchange heat with the external air. After absorbing heat from the air, the refrigerant gas passes through the four-way valve 9 and enters the gas-liquid separator 16, and then returns to the compressor 8.

[0065] The monitoring module 18 includes a first temperature sensor 6, a second temperature sensor 7 and a water flow switch 5. The first temperature sensor 6 and the second temperature sensor 7 are respectively arranged at the input end and the output end of the heat exchange tube 2, and are respectively used to monitor the temperature t1 of the high-temperature gas before it enters the heat exchange tube 2 and the temperature t2 when it discharges the heat exchange tube 2. The water flow switch 5 is arranged on the water supply pipe 4 or the water supply pipe 3 of the water tank 1, and is used to monitor the water flow in and out of the water tank 1. The monitoring module 18 can also monitor whether the water heater is in use.

[0066] In addition, an embodiment of the present application provides a computer-readable storage medium, which includes instructions. When the instructions are executed on a computer, the computer executes the above-mentioned water leakage detection method.

[0067] For ease of understanding, the technical solution provided in this embodiment is described below in conjunction with specific application scenarios.

[0068] Application Scenario 1

[0069] The water heater includes a water tank 1 and a heat exchange tube 2 passing through the water tank 1. The input end and the output end of the heat exchange tube 2 are respectively provided with a first temperature sensor 6 and a second temperature sensor 7. When the compressor 8 continuously passes high-temperature and high-pressure gas into the heat exchange tube 2, the high-temperature gas exchanges heat with the water in the water tank 1, and then the high-temperature gas and the water in the water tank 1 achieve temperature equilibrium, and no heat exchange occurs between the two. Heat loss can be ignored. Under normal circumstances, when the water heater is not in use, there is no water replenishment in the water tank 1, and no heat exchange occurs between the high-temperature gas and the water in the water tank 1. If heat exchange occurs between the high-temperature gas and the water in the water tank 1, it must be because the water tank 1 has replenished water. If the water replenishment phenomenon continues to occur for a period of time, it can be determined that the water tank 1 of the water heater has a water leakage problem.

[0070] Application Scenario 2

[0071] The water heater includes a water tank 1 and a heat exchange tube 2 passing through the water tank 1. The input end and the output end of the heat exchange tube 2 are respectively provided with a first temperature sensor 6 and a second temperature sensor 7. The water tank 1 has a water supply pipe 3 connected to an external water source and a water supply pipe 4 for use. The water supply pipe 3 or the water supply pipe 4 is provided with a water flow switch 5. The water flow switch 5 can monitor the water flow rate of the water tank 1 when the water heater is in a non-use state. When the water heater is in a non-use state, the water flow switch 5 is used to monitor whether the water tank 1 is replenished with water. If the water tank 1 is replenished with water, it can be judged that there is a water leakage problem in the water tank 1 of the water heater. If the water flow switch 5 cannot detect the water flow (the water flow rate is less than the preset value of the water flow switch 5), the water flow switch 5 cannot judge whether there is a water leakage. At this time, whether there is a water leakage problem is judged by whether the high-temperature gas exchanges heat with the water in the water tank 1. Specifically, if the high-temperature gas exchanges heat with the water in the water tank 1, the judgment result is water leakage. If the high-temperature gas does not exchange heat with the water in the water tank 1, the judgment result is no water leakage.

[0072] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0073] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0074] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0075] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for detecting water leakage in a water heater, wherein the water heater comprises a water tank and a heat exchange tube passing through the water tank; The water leakage detection method comprises: Passing high-temperature gas into the heat exchange tube; After the water in the water tank and the high-temperature gas in the heat exchange tube have reached a stable state and no heat exchange occurs between the high-temperature gas in the heat exchange tube and the water in the water tank, the temperature t1 of the high-temperature gas before entering the heat exchange tube and the temperature t2 of the high-temperature gas when it exits the heat exchange tube are monitored; If t1 is greater than t2 and lasts for a period of time, the high-temperature gas in the heat exchange tube exchanges heat with the water in the water tank, and the water tank is in an unused state, and it is determined that the water heater has a water leakage problem.

2. The water leakage detection method according to claim 1, characterized in that: Also includes: When the water heater has a water leakage problem, an alarm message is issued.

3. A method for detecting water leakage in a water heater, wherein the water heater comprises a water tank and a heat exchange tube passing through the water tank; The water tank is connected to a water supply pipe and a water supply pipe; the water leakage detection method includes: Monitor the water flow rate Q1 of the water supply pipe or the water supply pipe, and compare Q1 with a preset value Q2; If Q1 is greater than or equal to Q2, and the water tank is not in use, it is determined that the water heater has a water leakage problem; If Q1 is less than Q2, high-temperature gas is introduced into the heat exchange tube; After the water in the water tank and the high-temperature gas in the heat exchange tube have reached a stable state and no heat exchange occurs between the high-temperature gas in the heat exchange tube and the water in the water tank, the temperature t1 of the high-temperature gas before entering the heat exchange tube and the temperature t2 of the high-temperature gas when it exits the heat exchange tube are monitored; If t1 is greater than t2 and lasts for a period of time, the high-temperature gas in the heat exchange tube exchanges heat with the water in the water tank, and the water tank is in an unused state, and it is determined that the water heater has a water leakage problem.

4. The water leakage detection method according to claim 3, characterized in that: The water supply pipe or water supply pipe is provided with a water flow switch, and the water flow Q1 is monitored by the water flow switch; When Q1 is greater than or equal to Q2, the water flow switch is in the on state; When Q1 is less than Q2, the water flow switch is in the off state.

5. The water leakage detection method according to claim 3 or 4, characterized in that: Also includes: When the water heater has a water leakage problem, an alarm message is issued.

6. A water leakage detection device for a water heater, the water heater comprising a water tank; characterized in that: The water leakage detection device comprises: an execution module configured to pass high-temperature gas into the heat exchange pipe passing through the water tank; a monitoring module configured to monitor a temperature t1 of the high-temperature gas before it enters the heat exchange tube and a temperature t2 of the high-temperature gas when it exits the heat exchange tube after the water in the water tank and the high-temperature gas in the heat exchange tube have reached a stable state and no heat exchange occurs between the high-temperature gas in the heat exchange tube and the water in the water tank; and The judgment module is configured such that if t1 is greater than t2 and lasts for a period of time, heat is exchanged between the high-temperature gas in the heat exchange tube and the water in the water tank. If the water tank is not in use, it is determined that there is a water leakage problem.

7. The water leakage detection device according to claim 6, characterized in that: It also includes an alarm unit, which is configured to issue an alarm message when there is a water leakage problem in the water heater.

8. A water leakage detection device for a water heater, the water heater comprising a water tank; characterized in that: The water tank is connected to a water supply pipe and a water supply pipe; the water leakage detection device includes: a monitoring module configured to monitor a water flow rate Q1 of the water supply pipe or the water supply pipe and compare Q1 with a preset value Q2; a judgment module configured to judge that the water heater has a water leakage problem if Q1 is greater than or equal to Q2 and the water tank is in an unused state; an execution module configured to pass high-temperature gas into the heat exchange pipe passing through the water tank; The monitoring module is configured to monitor the temperature t1 of the high-temperature gas before it enters the heat exchange tube and the temperature t2 of the high-temperature gas when it exits the heat exchange tube after the water in the water tank and the high-temperature gas in the heat exchange tube have reached a stable state and no heat exchange occurs between the high-temperature gas in the heat exchange tube and the water in the water tank; and The judgment module is configured to determine that if Q1 is less than Q2 and t1 is greater than t2 and lasts for a period of time, there is heat exchange between the high-temperature gas in the heat exchange tube and the water in the water tank. If the water tank is not in use, it is determined that there is a water leakage problem.

9. The water leakage detection device according to claim 8, characterized in that: A water flow switch is provided on the water supply pipe or the water supply pipe, and the judgment module monitors the water flow Q1 through the water flow switch; when Q1 is greater than or equal to Q2, the water flow switch is in the on state; when Q1 is less than Q2, the water flow switch is in the off state.

10. The water leakage detection device according to claim 8 or 9, characterized in that: It also includes an alarm unit, which is configured to issue an alarm message when there is a water leakage problem in the water heater.

11. A water leakage detection device for domestic hot water, characterized in that: include: a memory storing computer program instructions; A processor, wherein when the computer program instructions are executed by the processor, the water leakage detection method according to any one of claims 1 to 5 is implemented.

12. A computer-readable storage medium, characterized in that The computer-readable storage medium includes instructions, and when the instructions are executed on a computer, the computer is caused to execute the water leakage detection method according to any one of claims 1 to 5.

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