Water leakage detection device of water heater, operation control method and water heater

Abstract

The invention discloses a water leakage detection device of a water heater, an operation control method and the water heater, the water heater comprises a water tank inner container, and the water leakage detection device comprises a fluorescent material smeared at a to-be-detected position of the water tank inner container, a photosensitive measurement module and a sampling resistor connected with the photosensitive measurement module. The photosensitive measurement module comprises a plurality of photosensitive resistors attached to a fluorescent material, the photosensitive resistors are connected in parallel, the fluorescent material can emit light after meeting water, the resistance of the photosensitive resistors can be changed after the photosensitive resistors are irradiated by light emitted by the fluorescent material, and one end of the sampling resistor is connected with one end of the photosensitive measurement module and serves as an output end to output a water leakage detection signal; the other end of the photosensitive measurement module is connected with the power supply end. When the resistance value of the photoresistor changes, the voltage at the two ends of the sampling resistor also changes, so that the output water leakage detection signals are different, and whether the position to be detected leaks water or not and the water leakage degree can be judged according to the different water leakage detection signals.

Description

Technical Field

[0001] The present invention relates to the technical field of water heaters, and in particular to a water leakage detection device, an operation control method and a water heater. Background Art

[0002] As the water heater ages, the risk of leakage will also increase. If the user does not discover the leakage problem in the water heater in time, it may easily lead to waste of water resources and property loss, and even induce the risk of electric leakage, posing a major safety hazard.

[0003] At present, the commonly used leakage detection scheme for water heaters is to use a leakage sensing rope. The leakage sensing rope is set on the outside of the water tank of the water heater and has no contact with the inner tank of the water tank. It is easily affected by environmental factors, such as the machine being in water or the machine being damp. Moreover, most of the current leakage detection schemes can only detect whether there is water seepage or leakage, but cannot detect the amount or degree of leakage. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a water heater leakage detection device, an operation control method and a water heater, which can detect whether the water heater is leaking and effectively detect the degree of leakage.

[0005] In a first aspect, an embodiment of the present invention provides a water leakage detection device for a water heater, wherein the water heater includes a water tank liner, and the water leakage detection device includes:

[0006] A fluorescent material, the fluorescent material is coated on the inner tank of the water tank at a position to be detected, and is used to emit light when encountering water;

[0007] A photosensitive measurement module, the photosensitive measurement module comprising a plurality of photoresistors mounted on the fluorescent material, the plurality of photoresistors being connected in parallel;

[0008] A sampling resistor, one end of which is connected to one end of the photosensitive measurement module and serves as an output end to output a water leakage detection signal, the other end of which is grounded, and the other end of the photosensitive measurement module is connected to a power supply end.

[0009] The water leakage detection device provided according to the embodiment of the present invention has at least the following beneficial effects: by arranging a fluorescent material at the position to be detected in the inner tank of the water tank, when a water leakage occurs at the position to be detected or a water leakage occurs at other positions and penetrates into the position to be detected, the fluorescent material emits light when it encounters water, thereby causing the resistance value of the photoresistor mounted on the fluorescent material to change, and finally outputting a water leakage detection signal through the connection end of the sampling resistor and the photosensitive measurement module to detect whether the water heater is leaking. In addition, different water leakage amounts will cause different luminous intensities of the fluorescent material, resulting in different degrees of change in the resistance value of the photoresistor, and the value of the water leakage detection signal finally output is also different, so the degree of water leakage can be judged according to the value of the water leakage detection signal. Moreover, a plurality of photoresistors are provided and the plurality of photoresistors are connected in parallel with each other, so that water leakage situations at multiple different positions can be detected, effectively improving the efficiency of water leakage detection. In addition, the water leakage detection device is directly connected to the water tank inner tank, and a foam layer for heat preservation is generally provided on the outside of the water tank inner tank, that is, the water leakage detection device is located in the foam layer, which solves the problem of false alarm caused by the water leakage sensing device being affected by environmental factors such as the machine wading through water, the machine being humid, etc.

[0010] According to the water leakage detection device provided in some embodiments of the present invention, the position to be detected is a weld of the water tank inner liner.

[0011] According to the water leakage detection device provided by some embodiments of the present invention, the water tank liner includes a middle tube, an upper end cover and a lower end cover, a first weld is provided between the middle tube and the lower end cover, a second weld is provided between the middle tube and the upper end cover, and a third weld is provided on the middle tube; wherein:

[0012] The first weld is coated with the fluorescent material; or the first weld and the second weld are both coated with the fluorescent material; or the first weld and the third weld are both coated with the fluorescent material; or the first weld, the second weld and the third weld are all coated with the fluorescent material.

[0013] According to the water leakage detection device provided by some embodiments of the present invention, a plurality of the photoresistors are evenly spaced and arranged on the fluorescent material.

[0014] According to some embodiments of the present invention, the water leakage detection device further includes a first diode and a second diode, the connection point between the sampling resistor and the photosensitive measurement module is connected to the anode of the first diode and the cathode of the second diode, the cathode of the first diode is connected to the power supply end, and the anode of the second diode is grounded.

[0015] According to some embodiments of the present invention, the water leakage detection device further includes a first capacitor, a second capacitor and a second resistor, the connection point between the sampling resistor and the photosensitive measurement module is connected to one end of the first capacitor and one end of the second resistor, the other end of the second resistor serves as an output end to output a water leakage detection signal and is connected to one end of the second capacitor, and the other end of the first capacitor and the other end of the second capacitor are grounded.

[0016] In a second aspect, an embodiment of the present invention provides an operation control method of a water heater, wherein the water heater comprises the water leakage detection device as described in the embodiment of the first aspect above, an electric heater and a compressor for heating the water in the water tank inner tank, and a water inlet valve is provided at the water inlet of the water tank inner tank, and the method comprises:

[0017] Acquiring the water leakage detection signal;

[0018] Determining the water leakage level of the water heater according to the voltage of the water leakage detection signal;

[0019] The working states of the electric heater, the compressor and the water inlet valve are controlled according to the water leakage level to reduce the impact of the water leakage.

[0020] The operation control method provided by the embodiment of the present invention has at least the following beneficial effects: by obtaining the water leakage detection signal output by the water leakage detection device, determining the water leakage level of the water heater according to the voltage of the water leakage detection signal, and then controlling the working state of the electric heater, the compressor and the water inlet valve according to the water leakage level. Controlling the working state of the electric heater, the compressor and the water inlet valve according to different water leakage levels can reduce the impact of water leakage on the water heater and reduce the risk of safety accidents caused by water leakage.

[0021] According to the operation control method provided by some embodiments of the present invention, determining the water leakage level of the water heater according to the voltage of the water leakage detection signal includes:

[0022] When the voltage of the water leakage detection signal is greater than a first preset threshold value and less than a second preset threshold value, it is determined that the water heater has a slight water leakage;

[0023] When the voltage of the water leakage detection signal is greater than the second preset threshold and less than the third preset threshold, it is determined that the water heater has a moderate water leakage;

[0024] When the voltage of the water leakage detection signal is greater than the third preset threshold, it is determined that the water heater has a severe water leakage;

[0025] Among them, the first preset threshold value range is 5% to 15% of the voltage level of the power supply end; the second preset threshold value range is 45% to 55% of the voltage level of the power supply end; the third preset threshold value range is 85% to 95% of the voltage level of the power supply end.

[0026] According to the operation control method provided by some embodiments of the present invention, the controlling the working states of the electric heater, the compressor and the water inlet valve according to the water leakage level includes:

[0027] When the water leakage level of the water heater is a slight water leakage, the power supply to the electric heater is stopped, the compressor and the water inlet valve are controlled to maintain the current state, and a warning message is issued;

[0028] When the water leakage level of the water heater is moderate, the power supply to the electric heater is stopped, the power supply to the compressor is stopped, the water inlet valve is controlled to maintain the current state, and a warning message is issued;

[0029] When the water leakage level of the water heater is a severe leakage, power supply to the electric heater is stopped, power supply to the compressor is stopped, the water inlet valve is controlled to be closed, and a warning message is issued.

[0030] According to the operation control method provided by some embodiments of the present invention, the water heater also includes a warning module, and the warning module includes a display screen for displaying an alarm icon and a buzzer for emitting a warning sound. The method also includes: when a water leakage is detected in the water heater, controlling the warning module to emit an alarm.

[0031] In a third aspect, an embodiment of the present invention provides an operation control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the operation control method of the water heater as described in the embodiment of the second aspect above.

[0032] In a fourth aspect, an embodiment of the present invention provides a water heater, comprising the water leakage detection device as described in the embodiment of the first aspect above or the operation control device as described in the embodiment of the third aspect.

[0033] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the water heater operation control method as described in the embodiment of the second aspect above.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0036] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0037] Figure 1 is a structural schematic diagram of a water heater provided by an embodiment of the present invention;

[0038] Figure 2 It is a schematic structural diagram of a water tank liner of a water heater provided by an embodiment of the present invention;

[0039] Figure 3 yes Figure 2 The AA section of the water tank liner is shown;

[0040] Figure 4 is a circuit diagram of a water leakage detection circuit provided by an embodiment of the present invention;

[0041] Figure 5 is a flow chart of an operation control method of a water heater provided by an embodiment of the present invention;

[0042] Figure 6 is a flow chart of an operation control method of a water heater provided by another embodiment of the present invention;

[0043] Figure 7 It is a structural schematic diagram of an operation control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0045] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, "above", "below", "within", etc. are understood to include the number itself, "at least one" means one or more, "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. If there is a description of the first and the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0046] It should be noted that the terms such as setting, installing, and connecting in the embodiments of the present invention should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the embodiments of the present invention in combination with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected or indirectly connected through an intermediate medium.

[0047] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] At present, some water heaters are equipped with a leak sensing rope outside the water tank to detect water leaks in the water heater. When the water tank leaks, water enters the leak sensing rope and triggers the control chip inside the leak sensing rope. The control chip issues a warning, thereby detecting water leaks in the water tank. However, since the leak sensing rope is arranged outside the water tank, it is easily affected by environmental factors. For example, it is affected by environmental factors such as the machine wading in water and the machine being wet. The outside of the water tank is relatively humid, and the humid water vapor in the air penetrates into the leak sensing rope, causing the control chip inside the leak sensing rope to be triggered. In addition, most of the current leak detection schemes can only detect whether there is water seepage or leakage, but cannot detect the amount of leakage or the degree of leakage. Therefore, how to accurately detect whether the water heater is leaking and detect the degree of leakage at the same time has become a problem that needs to be solved urgently.

[0049] Based on this, an embodiment of the present invention provides a water leakage detection device, an operation control method and a water heater for a water heater, wherein the water heater includes a water tank liner, and the water leakage detection device includes a fluorescent material applied to a position to be detected in the water tank liner, a photosensitive measurement module and a sampling resistor connected to the photosensitive measurement module, wherein the photosensitive measurement module includes a plurality of photosensitive resistors connected in parallel to each other, and the plurality of photosensitive resistors are mounted on the fluorescent material, and the first end of the sampling resistor is connected to the first end of the photosensitive measurement module and outputs a water leakage detection signal as an output end. When a water leakage occurs at the position to be detected or a water leakage occurs at other positions and penetrates into the position to be detected, the fluorescent material applied to the position to be detected will emit light, thereby causing the resistance value of the photosensitive resistor mounted on the fluorescent material to change, and when the resistance value of the photosensitive resistor changes, the voltage across the sampling resistor also changes, thereby changing the output leakage detection signal, and by obtaining the leakage detection signal, it is possible to determine whether a water leakage occurs at the position to be detected. Moreover, the luminous intensity of the fluorescent material will change with the change of the leakage amount. The luminous intensity of the fluorescent material is different, the resistance value of the photoresistor will be different, and the value of the leakage detection signal finally output will also be different. Therefore, the leakage degree of the detection position can be judged according to different leakage detection signals.

[0050] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0051] Reference Figure 1 , Figure 1 It is a structural schematic diagram of a water heater provided by an embodiment of the first aspect of the present invention.

[0052] It is understood that in some embodiments of the present invention, the water leakage detection device 100 includes a fluorescent material 110, a photosensitive measurement module 120 and a sampling resistor 130. The fluorescent material 110 is applied to the position to be detected in the water tank liner, and the position to be detected is the position in the water tank liner where water leakage is likely to occur; the photosensitive measurement module 120 includes a plurality of photosensitive resistors 140 connected in parallel with each other, the photosensitive resistor 140 is mounted on the fluorescent material 110, the first end of the sampling resistor 130 is connected to the second end of the photosensitive measurement module 120, the first end of the sampling resistor 130 is also connected to the output end, the second end of the sampling resistor 130 is grounded, and the first end of the photosensitive measurement module 120 is connected to the power supply end. When water leakage occurs at the position to be detected, water contacts the fluorescent material 110, and the fluorescent material 110 emits light when it meets water. After the photosensitive resistor 140 is irradiated by the light emitted by the fluorescent material 110, the resistance value of the photosensitive resistor 140 changes. When the voltage output at the power supply end remains unchanged, after the resistance value of the photoresistor 140 changes, the voltage across the photoresistor 140 will also change with the change in the resistance value of the photoresistor 140, causing the voltage across the sampling resistor 130 to change, thereby changing the water leakage detection signal output at the output end. Therefore, the degree of water leakage can be determined based on different water leakage detection signals.

[0053] It is understandable that the fluorescent material 110 can be a water-soluble fluorescent agent. When in use, the water-soluble fluorescent agent can be added to the glue and then applied to the position to be detected in the water tank liner to form a water-soluble fluorescent glue.

[0054] It is understandable that the inner tank of a water heater is generally composed of multiple parts, and each part is connected by welding, so there will be welds between the parts. When welding, there will be a small unwelded area at the interface. The unwelded area is prone to rust after being in contact with water for a long time, which will cause the weld to crack and leak. Therefore, in some embodiments, the position to be detected is the position of the weld between the various parts. It should be noted that in other embodiments, the various parts are sealed and fixed by setting a sealing rubber ring, but during long-term use, the sealing rubber ring may age and crack, and the water in the water tank liner may seep out from the cracks, causing the water in the water tank liner to leak. Therefore, the area where the sealing rubber ring is located can also be the position to be detected.

[0055] It is understandable that the larger the contact area between the fluorescent material 110 and the water, the greater the luminous intensity of the fluorescent material 110. When the luminous intensity of the fluorescent material 110 continues to increase, the resistance of the photoresistor 140 will continue to decrease. When the voltage output from the power supply end remains unchanged, the decrease in the resistance of the photoresistor 140 will cause the voltage across the sampling resistor 130 to increase. When the voltage is used as a water leakage detection signal, the higher the voltage at the output end, the more serious the water leakage in the water tank liner.

[0056] It is understandable that, in another embodiment, there are multiple positions to be detected in the inner tank of the water tank, each position to be detected is coated with a fluorescent material 110, a photoresistor 140 is mounted on the fluorescent material 110, multiple photoresistors 140 are connected in parallel, and multiple photoresistors 140 are respectively connected to the sampling resistor 130. When a leak occurs at any position to be detected, the fluorescent material 110 coated on the position to be detected emits light when it encounters water, and the photoresistor 140 mounted on the corresponding fluorescent material 110 changes its resistance after being irradiated by the light emitted by the fluorescent material 110. Because multiple photoresistors 140 are connected in parallel, and multiple photoresistors 140 are respectively connected to the sampling resistor 130, when the resistance of any photoresistor 140 changes, the voltage across the sampling resistor 130 will change, thereby changing the leakage detection signal at the output end. Therefore, when a leak occurs at any position to be detected, it can be detected in time, thereby improving the timeliness of leakage detection.

[0057] It is understandable that in another embodiment, the range of the position to be detected in the inner tank of the water tank is larger, and multiple photoresistors 140 are mounted on the same fluorescent material 110, the multiple photoresistors 140 are connected in parallel, and the multiple photoresistors 140 are respectively connected to the sampling resistor 130. When a leak occurs at any point in the position to be detected, the light emitted by the fluorescent material 110 can be timely irradiated to the photoresistor 140 by mounting multiple photoresistors 140, causing the resistance value of the photoresistor 140 to change, causing the voltage across the sampling resistor 130 to change, and then changing the leakage detection signal at the output end. When a leak occurs at any point in the position to be detected, it can be detected in time, improving the timeliness of the leakage detection.

[0058] It is understandable that the water heater further includes an operation control device 700 for receiving a water leakage detection signal, the operation control device 700 is connected to the output end, and the operation control device 700 can control the operation state of the working unit 200 of the water heater according to the received water leakage detection signal. The operation control device 700 can avoid leakage by controlling the operation state of the working unit 200 of the water heater, thereby ensuring the safety of the user.

[0059] It can be understood that the water heater also includes a warning module 300, which includes an optical warning device 310 for displaying water leakage and an acoustic warning device 320 for sound reminder. The operation control device 700 is electrically connected to the warning module 300 respectively. The operation control device 700 can control the optical warning device 310 to display the water leakage of the water tank inner tank and control the acoustic warning device 320 to send a sound reminder signal according to the received water leakage detection signal.

[0060] It is understandable that the outer side of the water tank liner is also wrapped with a foam layer for heat preservation. By setting the water leakage detection device 100 in the foam layer, the water leakage detection device 100 can be prevented from being affected by external environmental factors, thereby reducing the possibility of false alarms of the water leakage detection device 100. Among them, the external environmental factors can be the machine wading in water, the machine is wet, etc.

[0061] Reference Figure 2 , Figure 2 It is a schematic structural diagram of a water tank inner tank of a water heater provided by an embodiment of the first aspect of the present invention.

[0062] It can be understood that the water tank liner includes a middle tube 400, an upper end cover 600 and a lower end cover 500. The lower end of the middle tube 400 is connected to the lower end cover 200 by welding, and the upper end of the middle tube 400 is connected to the upper end cover 600 by welding. The weld between the middle tube 400 and the lower end cover 500 is a first weld 510, and the weld between the middle tube 400 and the upper end cover 600 is a second weld 610. The middle tube 400 is provided with a water inlet 410 and a water outlet 420. The water inlet 410 is located below the middle tube 400, and the water outlet 420 is located above the middle tube 400. The first weld 510 is used as the position to be detected, and the fluorescent material 110 is applied to the outside of the first weld 510. A plurality of photoresistors 140 are mounted on the fluorescent material 110, and the plurality of photoresistors 140 are connected in parallel. When the first weld 510 leaks, the water in the water tank comes into contact with the fluorescent material 110, the fluorescent material 110 emits light, and the photoresistor 140 receives the light emitted by the fluorescent material 110. The resistance of the photoresistor 140 decreases, thereby changing the voltage across the sampling resistor 130, and finally changing the leakage detection signal output by the output end. After receiving the leakage detection signal, the operation control device 700 controls the operation state of the working unit 200 of the water heater according to the leakage detection signal, and controls the optical warning device 310 and the acoustic warning device 320 to remind the user, so that the user can be aware of the leakage in the first weld 510 at the first time.

[0063] It should be noted that there may be some unwelded small areas at the interface of the first weld 510 during welding. During long-term use, the unwelded areas may rust, causing cracks in the weld and leaking. It may also be because the water pressure in the water tank liner is high, and the first weld 510 is located at the connection area between the middle cylinder 400 and the lower end cover 500, and the thickness is relatively thin. Under the long-term action of water pressure, it may break, causing leaking.

[0064] It can be understood that, in another embodiment, the first weld 510 and the second weld 610 are used as positions to be detected, the first fluorescent material is applied to the outside of the first weld 510, a plurality of first photoresistors are mounted on the first fluorescent material, the plurality of first photoresistors are connected in parallel, the plurality of first photoresistors are respectively connected to the first end of the first sampling resistor, the first end of the first sampling resistor is also connected to the first output end and outputs a first water leakage detection signal, and the first output end is connected to the operation control device 700; the second fluorescent material is applied to the outside of the second weld 610, a plurality of second photoresistors are mounted on the second fluorescent material, the plurality of second photoresistors are connected in parallel, the plurality of second photoresistors are respectively connected to the first end of the second sampling resistor, the first end of the second sampling resistor is also connected to the second output end and outputs a second water leakage detection signal, and the second output end is connected to the operation control device 700. When the operation control device 700 receives the first water leakage detection signal output from the first output end, it indicates that the first weld 510 is leaking, and the operation control device 700 can judge the water leakage of the first weld 510 according to different first water leakage detection signals. When the operation control device 700 receives the second water leakage detection signal output from the second output terminal, it indicates that the second weld 610 is leaking. The operation control device 700 can determine the leakage of the second weld 610 according to different second water leakage detection signals. The operation control device 700 can control the operation state of the working unit 200 of the water heater according to the first water leakage detection signal and the second water leakage detection signal. In addition, the operation control device 700 can also control the optical warning device 310 and the acoustic warning device 320 according to the first water leakage detection signal and the second water leakage detection signal to remind the user that the first weld 510 and / or the second weld 610 is leaking and the degree of leakage of the first weld 510 and / or the second weld 610.

[0065] It can be understood that the middle cylinder 400 is welded by multiple parts, and the weld on the middle cylinder 400 is the third weld. In another embodiment, the third weld is also used as a position to be detected, and a third fluorescent material is applied to the outside of the third weld. A plurality of third photoresistors are mounted on the third fluorescent material. The plurality of third photoresistors are connected in parallel with each other, and the plurality of third photoresistors are respectively connected to the first end of the third sampling resistor. The first end of the third sampling resistor is also connected to the third output end and outputs a third water leakage detection signal. The third output end is connected to the operation control device 700. When the operation control device 700 receives the third water leakage detection signal output from the third output end, it indicates that the third weld is leaking. The operation control device 700 can judge the degree of water leakage of the third weld according to different third water leakage detection signals, and control the warning module 300 to remind the user according to the third water leakage detection signal.

[0066] It can be understood that the water outlet 500 and the water inlet 400 are provided with a sealing rubber ring. In another implementation, the area where the sealing rubber ring is located will also be used as a position to be detected, and a fourth fluorescent material will be applied to the outside of the sealing rubber ring. A plurality of fourth photoresistors will be mounted on the fourth fluorescent material. The plurality of fourth photoresistors are connected in parallel with each other, and the plurality of fourth photoresistors are respectively connected to the first end of the fourth sampling resistor. The first end of the fourth sampling resistor is also connected to the fourth output end and outputs a fourth water leakage detection signal. The fourth output end is connected to the operation control device 700. When the operation control device 700 receives the fourth water leakage detection signal output from the fourth output end, it indicates that the sealing rubber ring is leaking. The operation control device 700 can judge the water leakage of the sealing rubber ring according to different fourth water leakage detection signals.

[0067] Reference Figure 3 , Figure 3 yes Figure 2 AA section view of the water tank liner is shown.

[0068] It can be understood that the middle tube 400 of the water tank liner is a cylindrical tube, the first weld 510 between the lower end cover 500 and the middle tube 400 is an annular weld, the fluorescent material 110 is evenly applied on the outside of the first weld 510, and multiple photoresistors 140 are evenly mounted on the fluorescent material 110. By mounting multiple photoresistors 140 evenly at intervals on the fluorescent material 110, when a leak occurs at any point on the first weld 510, the light emitted by the fluorescent material 110 can be received by the photoresistor 140 in time, so that the operation control device 700 can receive the leak detection signal in time. For example, in another embodiment, the photosensitive measurement module 120 includes 6 photoresistors 140, and the 6 photoresistors 140 are evenly mounted on the fluorescent material 110, and the distances between the 6 photoresistors 140 are equal.

[0069] Reference Figure 4 , Figure 4 It is a circuit diagram of a water leakage detection circuit provided by an embodiment of the first aspect of the present invention.

[0070] It can be understood that the water leakage detection circuit includes a photosensitive measurement module 120, a sampling resistor 130, a power supply terminal +5V, a voltage stabilizing unit, a first capacitor C1, a second capacitor C2, a second resistor R2 and an output terminal TLS-AD, the photosensitive measurement module 120 includes a plurality of photosensitive resistors 140 connected in parallel, the first end of the photosensitive measurement module 120 is connected to the power supply terminal +5V, the external power supply supplies power to the photosensitive measurement module 120 through the power supply terminal +5V, the second end of the photosensitive measurement module 120 is respectively connected to the voltage stabilizing unit, the first end of the first capacitor C1, the first end of the sampling resistor 130 and the first end of the second resistor R2, the second end of the second resistor R2 is connected to the output terminal TLS-AD, the first end of the second capacitor C2 is connected between the second end of the second resistor R2 and the output terminal TLS-AD, the second end of the sampling resistor 130, the second end of the first capacitor C1 and the second end of the second capacitor C2 are all grounded. The first capacitor C1 and the second capacitor C2 are used as filter capacitors of the circuit, which can effectively filter out high-frequency noise in the circuit and prevent the output signal from being interfered. The voltage stabilizing unit is used to clamp the circuit voltage to prevent static electricity generated during installation or excessive voltage at the output port due to leakage. When the photoresistor 140 is irradiated by the light generated by the fluorescent material 110, the resistance of the photoresistor 140 decreases, the voltage distributed to the sampling resistor 130 increases, and the voltage of the second resistor R2 and the output terminal also increases.

[0071] It should be noted that the stronger the light intensity irradiating the photoresistor 140, the smaller the resistance of the photoresistor 140 will be, and the more voltage will be distributed to the sampling resistor 130. The more serious the water leakage at the position to be detected, the stronger the light intensity emitted by the fluorescent material 110 will be. Therefore, the higher the voltage across the sampling resistor 130, the more serious the water leakage at the position to be detected. When the photoresistor 140 is short-circuited by water, the voltage across the sampling resistor 130 is the highest.

[0072] It should be noted that the number of photoresistors 140 in the photosensitive measurement module 120 can be adjusted according to actual usage.

[0073] It can be understood that the voltage stabilizing unit includes a first diode D1 and a second diode D2, the anode of the first diode D1 is respectively connected to the first end of the sampling resistor 130, the first end of the first capacitor C1 and the second end of the photosensitivity measurement module 120, the cathode of the first diode D1 is connected to the power supply terminal +5V, the cathode of the second diode D2 is respectively connected to the first end of the sampling resistor 130, the first end of the first capacitor C1 and the second end of the photosensitivity measurement module 120, and the anode of the second diode D2 is grounded.

[0074] Reference Figure 5, the second aspect of the present invention provides a flow chart of the steps of a water heater operation control method, which can be applied to the water leakage detection device 100 provided in the first aspect of the present invention; refer to Figure 5 The operation control method includes but is not limited to the following steps:

[0075] Step S100, obtaining a water leakage detection signal;

[0076] Step S200, determining the water leakage level of the water heater according to the voltage of the water leakage detection signal.

[0077] Step S300, controlling the working states of the electric heater, the compressor and the water inlet valve according to the water leakage level to reduce the impact of the water leakage.

[0078] It can be understood that the working unit 200 of the water heater includes a heating device and a water inlet valve, the heating device includes an electric heater and a heat pump, the heat pump includes a heat exchanger and a compressor, the electric heater and the heat exchanger are installed in the water tank, and the operation control device 700 is respectively connected to the electric water heater, the compressor and the water inlet valve, so that the operation control device 700 can control the working state of the electric heater, the compressor and the water inlet valve. When a leak occurs at the position to be detected, the fluorescent material 110 emits light when it encounters water, the resistance of the photoresistor 140 decreases after being irradiated by light, and the voltage across the sampling resistor 130 changes, thereby causing the leakage detection signal output by the output end to change, wherein the leakage detection signal is the voltage across the sampling resistor 130. The operation control device 700 can determine the leakage level of the water heater according to the voltage of the leakage detection signal, and then control the working state of the electric heater, the compressor and the water inlet valve according to different leakage levels, and finally reduce the leakage effect of the water tank.

[0079] It can be understood that the more serious the water leakage at the position to be detected, the more obvious the luminous effect of the fluorescent material 110, the stronger the light intensity received by the photoresistor 140, the lower the resistance of the photoresistor 140, which makes the voltage across the sampling resistor 130 higher. Therefore, the larger the voltage of the water leakage detection signal, the more serious the water leakage at the position to be detected.

[0080] It is understandable that after determining the water leakage level, the operation control device 700 will also issue different warning information according to the water leakage level. The warning information can be the operation control device 700 sending information to the server and the client according to the water leakage level, or the operation control device 700 can control the warning module 300 to issue a warning reminder according to the water leakage level.

[0081] It should be noted that the warning module 300 includes an optical warning device 310 and an acoustic warning device 320. The operation control device 700 can control the optical warning device 310 to give different degrees of light warnings according to different water leakage levels. For example, the higher the water leakage level, the higher the light flashing frequency of the optical warning device 310. The operation control device 700 can control the acoustic warning device 320 to give different degrees of sound warnings according to different water leakage levels. For example, the acoustic warning device 320 uses voice broadcasting to give warnings, and different water leakage levels correspond to different voices; for another example, the acoustic warning device 320 uses a whistle alarm to give warnings, and the higher the water leakage level, the louder the whistle alarm sound.

[0082] It should be noted that the operation control device 700 is provided with a communication unit for sending information to the server and the client, wherein the server may be a server of the water heater manufacturer, and the client may be a user's mobile device. After receiving the water leakage level information of the water heater, the server may arrange appropriate maintenance personnel to repair the water heater according to the water leakage level, thereby improving the processing efficiency of after-sales service and avoiding the deterioration of the water leakage due to the water heater not being repaired in time. The operation control device 700 sends information to the client according to the water leakage level, and the operation control device 700 may send an alarm text message to the user's mobile device so that the user may be informed of the water leakage information of the water heater in a timely manner.

[0083] It can be understood that in another embodiment, a plurality of water leakage detection devices 100 are arranged on the water tank inner tank, and the plurality of water leakage detection devices 100 are respectively connected to different ports of the operation control device 700. The operation control device 700 can also judge the leakage position according to the port receiving the leakage detection signal, and control the display screen to display the leakage position and leakage degree according to the judgment result, and control the buzzer to broadcast the leakage position and leakage level, so that the user can understand the leakage position and the leakage level corresponding to the leakage position.

[0084] Reference Figure 6 Another embodiment of the second aspect of the present invention provides a flow chart of a method for controlling the operation of a water heater, which includes but is not limited to the following steps:

[0085] Step S100, obtaining a water leakage detection signal;

[0086] Step S210, the voltage of the water leakage detection signal is greater than a first preset threshold and less than a second preset threshold;

[0087] Step S310: stop supplying power to the electric heater, control the compressor and the water inlet valve to maintain the current state, and issue a warning message

[0088] It is understandable that when the voltage of the water leakage detection signal is greater than the first preset threshold and less than the second preset threshold, it indicates that a certain degree of water leakage occurs at the position to be detected, and it can be considered that the current water leakage level of the water tank liner is a slight water leakage. At this time, the operation control device 700 cuts off the power supply to the electric heater and retains the heat pump heating to meet the user's temporary hot water demand. By issuing a warning message through the operation control device 700, the user can be informed of the water leakage of the water tank liner in a timely manner.

[0089] It should be noted that the electric heater is installed in the inner tank of the water tank and is in direct contact with the water. When a water leak occurs at the position to be detected, if the electric heater is still in operation, it is possible that the current of the electric heater is conducted to the outside of the inner tank of the water tank through the water leak position, thereby causing a safety accident. In addition, when a water leak occurs at the position to be detected, it indicates that there is a crack in the inner tank of the water tank. If the water in the inner tank of the water tank continues to be heated, the pressure in the inner tank of the water tank may increase due to the high water temperature, and eventually the crack will further increase. Therefore, when the water leakage detection signal is greater than the first preset threshold value, the operation control device 700 cuts off the power supply to the electric heater, which can improve the safety of the water heater and prevent the leakage from further deteriorating.

[0090] Reference Figure 6 Another embodiment of the second aspect of the present invention provides a flow chart of a method for controlling the operation of a water heater, which includes but is not limited to the following steps:

[0091] Step S100, obtaining a water leakage detection signal;

[0092] Step S220, the voltage of the water leakage detection signal is greater than the second preset threshold and less than the third preset threshold;

[0093] Step S320, stop supplying power to the electric heater, stop supplying power to the compressor, control the water inlet valve to maintain the current state, and issue a warning message.

[0094] It is understandable that when the voltage of the water leakage detection signal is greater than the second preset threshold and less than the third preset threshold, and the second preset threshold is greater than the first preset threshold, it indicates that the water leakage at the position to be detected is very serious, and it can be considered that the current water leakage level of the water tank liner is severe water leakage. At this time, the operation control device 700 cuts off the power supply to the electric heater and the compressor, and stops heating the water in the water tank liner, which can avoid the pressure in the water tank liner increasing due to the increase in water temperature, resulting in further deterioration of the water leakage. When the operation control device 700 cuts off the power supply to the electric heater and the compressor, it will also issue a warning message for reminder. When the operation control device 700 controls the acoustic warning device 320 and the optical warning device 310 to issue a warning message, the sound and frequency emitted by the acoustic warning device 320 are greater than the sound and frequency when the water leakage level is mild water leakage, and the optical warning device 310 uses a display screen for alarm prompts, and the frequency of the display screen alarm signal flashing is greater than the frequency when the water leakage level is mild water leakage.

[0095] It should be noted that, in another embodiment, the optical warning device 310 is an indicator light, which reminds the user of the water leakage at the position to be detected through different colors and different flashing frequencies of the indicator light. For example, when the water leakage level is a light leak, the indicator light is yellow and flashes at a first frequency; when the water leakage level is a moderate leak, the indicator light is blue and flashes at a second frequency, and the second frequency is greater than the first frequency.

[0096] Reference Figure 6 Another embodiment of the second aspect of the present invention provides a flow chart of a method for controlling the operation of a water heater, which includes but is not limited to the following steps:

[0097] Step S100, obtaining a water leakage detection signal;

[0098] Step S230, the voltage of the water leakage detection signal is greater than a third preset threshold;

[0099] Step S330, stop supplying power to the electric heater, stop supplying power to the compressor, control the water inlet valve to close, and issue a warning message.

[0100] It is understandable that when the voltage of the water leakage detection signal is greater than the third preset threshold, and the third preset threshold is greater than the second preset threshold, it indicates that the water leakage at the position to be detected is very serious, and it can be considered that the current water leakage level of the water tank liner is severe leakage, that is, the crack at the position to be detected is large. At this time, the operation control device 700 will not only cut off the power supply to the electric heater and the compressor, but also close the water inlet valve of the water tank liner. By closing the water inlet valve of the water tank liner, water can be prevented from continuing to enter the water tank liner, and a large amount of water can be prevented from flowing out of the crack at the position to be detected, causing other parts of the water heater to be damp. When the operation control device 700 stops supplying power to the electric heater, stops supplying power to the compressor, and closes the water inlet valve, it will also issue a warning message for reminder. When the operation control device 700 controls the acoustic warning device 320 and the optical warning device 310 to issue a warning message, the sound and frequency emitted by the acoustic warning device 320 are both greater than the sound and frequency when the leakage level is moderate. The optical warning device 310 uses a display screen to give an alarm prompt, and the frequency of the flashing alarm signal on the display screen is greater than the frequency when the leakage level is moderate.

[0101] It should be noted that the optical warning device 310 is an indicator light. When the water leakage level is a severe water leakage, the indicator light lights up in red and flashes at a third frequency, which is greater than the second frequency.

[0102] It is understandable that in another embodiment, the optical warning device 310 is a display, and three different alarm icons are set on the display. When the water leakage level is a light leak, the first alarm icon on the display lights up; when the water leakage level is a moderate leak, the second alarm icon on the display lights up; when the water leakage level is a severe leak, the third alarm icon on the display lights up. The user can intuitively understand the water leakage of the water tank liner according to the different alarm icons.

[0103] It can be understood that the acoustic warning device 320 is a buzzer. When the water leakage level is a light leak, the buzzer emits an alarm sound at a first sound frequency; when the water leakage level is a moderate leak, the buzzer emits an alarm sound at a second sound frequency; when the water leakage level is a severe leak, the buzzer emits an alarm sound at a third sound frequency. The third sound frequency is greater than the second sound frequency, and the second sound frequency is greater than the first sound frequency. The user can judge the degree of water leakage in the water tank liner according to different sound frequencies.

[0104] It is understandable that when the water inlet valve of the water tank inner tank is closed, the water outlet valve of the water tank inner tank will also be opened to reduce the water retained in the water tank inner tank, thereby reducing the water leaking from the position to be detected.

[0105] It is understandable that, in some embodiments, the first preset threshold value ranges from 5% to 15% of the voltage level of the power supply end; the second preset threshold value ranges from 45% to 55% of the voltage level of the power supply end; the third preset threshold value ranges from 85% to 95% of the voltage level of the power supply end, wherein the voltage level of the power supply end is the voltage value input to the power supply end. The sampling resistor 130 is connected in series with the photosensitive measurement module 120, that is, the smaller the voltage across the photosensitive measurement module 120, the higher the voltage across the sampling resistor 130. When the voltage across the sampling resistor 130 is 5% to 15% of the input voltage of the power supply end, it means that the resistance value of the photoresistor 140 decreases, but the degree of decrease is low, that is, the luminous intensity of the fluorescent material 110 is low, and it can be considered that the inner tank of the water tank is leaking but the degree of leakage is low. When the voltage across the sampling resistor 130 is 45% to 55% of the input voltage at the power supply end, it means that the resistance of the photoresistor 140 has dropped significantly, that is, the luminous intensity of the fluorescent material 110 is high, and it can be considered that the water tank liner is leaking and the degree of leakage is high. When the voltage across the sampling resistor 130 is 85% to 95% of the input voltage at the power supply end, it means that the resistance of the photoresistor 140 is low or the photoresistor 140 is short-circuited by water, and it can be considered that the water tank liner is leaking and the leakage is very serious. By setting three different value thresholds, the degree of leakage can be divided, which is convenient for the operation control device 700 to make judgments and make corresponding controls. In addition, the detection accuracy can be improved by setting the value range.

[0106] It can be understood that, in some embodiments, the voltage level of the power supply terminal is 5V, the first preset threshold is 0.5V, the second preset threshold is 2.5V, and the third preset threshold is 4.5V. When the water leakage detection signal is greater than the first preset threshold and less than the second preset threshold, the water leakage level is a slight water leakage, and it can be considered that the position to be detected is slightly leaking. At this time, the operation control device 700 cuts off the power supply of the electric heater and retains the power supply of the compressor, and controls the buzzer to sound at a frequency of 1kHz for more than 10 seconds and controls the display screen to flash the alarm icon at a predetermined position. When the water leakage detection signal is greater than the second preset threshold and less than the third preset threshold, the water leakage level is a moderate water leakage, and it can be considered that the position to be detected is slightly leaking. At this time, the operation control device 700 cuts off the power supply of the electric heater and the compressor, and controls the buzzer to sound at a frequency of 4kHz for more than 10 seconds and controls the display screen to flash the alarm icon at a predetermined position. When the water leakage detection signal is greater than or equal to the third preset threshold value, the water leakage level is a severe water leakage. It can be considered that there is a serious water leakage at the location to be detected. At this time, the operation control device 700 cuts off the power supply to the electric heater and the compressor and closes the water inlet valve of the water tank inner tank. The operation control device 700 controls the buzzer to sound at a frequency of 4kHz for more than 10 seconds and controls the display screen to flash the alarm icon at a predetermined position.

[0107] Thirdly, refer to Figure 7 The embodiment of the present invention provides an operation control device 700, including a memory 710, a processor 720, and a computer program stored in the memory 710 and executable on the processor 720. The processor 720 executes the program to implement the operation control method of the water heater in the second embodiment of the present invention, for example, Figure 5 or performing steps S100 to S300 of the method Figure 6 Method steps S210 to S310, method steps S220 to S320, and method steps S230 to S330 in.

[0108] The memory 710 is a non-transitory computer-readable storage medium that can be used to store non-transitory software programs and non-transitory computer executable programs, such as the operation control method of the water heater in the above embodiment of the present invention. The processor 720 implements the operation control method of the water heater in the above embodiment of the present invention by running the non-transitory software programs and instructions stored in the memory 710.

[0109] The memory 710 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required by at least one function; the data storage area may store data required to execute the operation control method of the water heater in the above embodiment, etc. In addition, the memory 710 may include a high-speed random access memory 710, and may also include a non-volatile memory 710, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. It should be noted that the memory 710 may optionally include a memory 710 remotely arranged relative to the processor 720, and these remote memories 710 may be connected to the terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0110] In the fourth aspect, an embodiment of the present invention provides a water heater, the water heater includes a water leakage detection device 100 as in the embodiment of the first aspect or an operation control device 700 as in the embodiment of the third aspect. According to the water heater provided by the embodiment of the present invention, the water heater includes a water tank liner, and a fluorescent material 110 is arranged at a position to be detected in the water tank liner. When a water leakage occurs at the position to be detected or a water leakage occurs at other positions and penetrates into the position to be detected, the fluorescent material 110 emits light when it encounters water, thereby causing the resistance value of the photoresistor 140 mounted on the fluorescent material 110 to change, and finally a water leakage detection signal is output through the connection end of the sampling resistor 130 and the photosensitive measurement module 120 to detect whether the water heater is leaking. In addition, different water leakage amounts will cause different luminous intensities of the fluorescent material 110, resulting in different degrees of change in the resistance value of the photoresistor 140, and the value of the water leakage detection signal finally output is also different, so the degree of water leakage can be judged according to the value of the water leakage detection signal. Moreover, a plurality of photoresistors 140 are provided and the plurality of photoresistors 140 are connected in parallel with each other, so that water leakage at multiple different locations can be detected, thereby effectively improving the efficiency of water leakage detection.

[0111] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the operation control method of the embodiment of the second aspect above, such as executing Figure 5 or performing steps S100 to S300 of the method Figure 6 Method steps S210 to S310, method steps S220 to S320, and method steps S230 to S330 in.

[0112] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed methods above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium or a non-transitory medium and a communication medium or a temporary medium. As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk DVD or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0113] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A water leakage detection device for a water heater, characterized in that: The water heater comprises a water tank liner, and the water leakage detection device comprises: A fluorescent material, the fluorescent material is coated on the inner tank of the water tank at a position to be detected, and is used to emit light when encountering water; A photosensitive measurement module, the photosensitive measurement module comprising a plurality of photoresistors mounted on the fluorescent material, the plurality of photoresistors being connected in parallel; A sampling resistor, one end of which is connected to one end of the photosensitive measurement module and serves as an output end to output a water leakage detection signal, the other end of which is grounded, and the other end of the photosensitive measurement module is connected to a power supply end.

2. The water leakage detection device according to claim 1, characterized in that: The position to be detected is the weld of the water tank liner.

3. The water leakage detection device according to claim 2, characterized in that: The water tank liner includes a middle tube, an upper end cover and a lower end cover, a first weld is provided between the middle tube and the lower end cover, a second weld is provided between the middle tube and the upper end cover, and a third weld is provided on the middle tube; wherein: The first weld is coated with the fluorescent material; or the first weld and the second weld are both coated with the fluorescent material; or the first weld and the third weld are both coated with the fluorescent material; or the first weld, the second weld and the third weld are all coated with the fluorescent material.

4. The water leakage detection device according to claim 1, characterized in that: A plurality of the photoresistors are evenly spaced and arranged on the fluorescent material.

5. The water leakage detection device according to claim 1, characterized in that: It also includes a first diode and a second diode, the connection point between the sampling resistor and the photosensitive measurement module is connected to the anode of the first diode and the cathode of the second diode, the cathode of the first diode is connected to the power supply end, and the anode of the second diode is grounded.

6. The water leakage detection device according to claim 1, characterized in that: It also includes a first capacitor, a second capacitor and a second resistor. The connection point between the sampling resistor and the photosensitive measurement module is connected to one end of the first capacitor and one end of the second resistor. The other end of the second resistor serves as an output end to output a water leakage detection signal and is connected to one end of the second capacitor. The other end of the first capacitor and the other end of the second capacitor are grounded.

7. A method for controlling the operation of a water heater, characterized in that: The water heater comprises the water leakage detection device according to any one of claims 1 to 6, an electric heater and a compressor for heating the water in the water tank inner tank, a water inlet valve is provided at the water inlet of the water tank inner tank, and the method comprises: Acquiring the water leakage detection signal; Determining the water leakage level of the water heater according to the voltage of the water leakage detection signal; The working states of the electric heater, the compressor and the water inlet valve are controlled according to the water leakage level to reduce the impact of the water leakage.

8. The operation control method according to claim 7, characterized in that: Determining the water leakage level of the water heater according to the voltage of the water leakage detection signal includes: When the voltage of the water leakage detection signal is greater than a first preset threshold value and less than a second preset threshold value, it is determined that the water heater has a slight water leakage; When the voltage of the water leakage detection signal is greater than the second preset threshold and less than the third preset threshold, it is determined that the water heater has a moderate water leakage; When the voltage of the water leakage detection signal is greater than the third preset threshold, it is determined that the water heater has a severe water leakage; Among them, the first preset threshold value range is 5% to 15% of the voltage level of the power supply end; the second preset threshold value range is 45% to 55% of the voltage level of the power supply end; the third preset threshold value range is 85% to 95% of the voltage level of the power supply end.

9. The operation control method according to claim 8, characterized in that: The controlling the working states of the electric heater, the compressor and the water inlet valve according to the water leakage level comprises: When the water leakage level of the water heater is a slight water leakage, the power supply to the electric heater is stopped, the compressor and the water inlet valve are controlled to maintain the current state, and a warning message is issued; When the water leakage level of the water heater is moderate, the power supply to the electric heater is stopped, the power supply to the compressor is stopped, the water inlet valve is controlled to maintain the current state, and a warning message is issued; When the water leakage level of the water heater is a severe leakage, power supply to the electric heater is stopped, power supply to the compressor is stopped, the water inlet valve is controlled to be closed, and a warning message is issued.

10. The operation control method according to claim 7, characterized in that: The water heater further comprises a warning module, which comprises a display screen for displaying an alarm icon and a buzzer for emitting a warning sound. The method further comprises: when a water leak is detected in the water heater, controlling the warning module to emit a warning.

11. An operation control device, characterized in that: It comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the operation control method of the water heater as claimed in any one of claims 7 to 10.

12. A water heater, characterized in that: It comprises the water leakage detection device according to any one of claims 1 to 6 or the operation control device according to claim 11.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the operation control method of the water heater according to any one of claims 7 to 10.

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