An electric water heater with water leakage detection alarm

Abstract

The utility model discloses an electric water heater with water leakage detection and alarm, comprising a housing, a water leakage detection module, a controller and an alarm, wherein the water leakage detection module comprises a substrate and at least two copper foil electrodes; the water leakage detection module, the controller and the alarm are all arranged inside the housing, and the water leakage detection module and the alarm are both electrically connected to the controller; the two copper foil electrodes are both arranged on the top surface of the substrate, and the two copper foil electrodes are adjacently and densely arranged and distributed. The application solves the problem that in the electric water heaters with water leakage detection and protection function existing on the market, the water leakage detection module is generally a water immersion detection rope, and the area of ​​the structure contacting the water is relatively small, and the sensitivity is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of electric water heaters, in particular to an electric water heater with a water leakage detection alarm. Background Art

[0002] As the electric water heater is used for a longer period of time, the risk of leakage will also increase. If the user does not find the leakage in the electric water heater in time, it will lead to waste of water resources and property loss, and even induce leakage, threatening personal safety. At present, there are electric water heaters with leakage detection and protection functions on the market. In the electric water heater, a leakage detection module is usually provided. The leakage detection module can detect whether the electric water heater is leaking. When a leakage occurs, it automatically sounds or displays an alarm to prompt the user to deal with the leakage fault. However, the traditional leakage detection module is generally a water immersion detection rope, which has a relatively small area in contact with water and poor sensitivity. Utility Model Content

[0003] In view of the above defects, the utility model proposes an electric water heater with a water leakage detection alarm, aiming to solve the problem that in the electric water heaters with water leakage detection protection function existing on the market, the water leakage detection module is generally a water immersion detection rope, which has a relatively small area in contact with water and has poor sensitivity.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] An electric water heater with a water leakage detection alarm comprises a housing, a water leakage detection module, a controller and an alarm, wherein the water leakage detection module comprises a substrate and at least two copper foil electrodes;

[0006] The water leakage detection module, the controller and the alarm are all arranged inside the housing, and the water leakage detection module and the alarm are both electrically connected to the controller; the two copper foil electrodes are both arranged on the top surface of the substrate, and the two copper foil electrodes are adjacently and densely arranged.

[0007] Preferably, the water leakage detection module is made of a soft film material or a rigid PCB board material.

[0008] Preferably, it further comprises a water leakage signal lead, and the two copper foil electrodes are electrically connected to the controller via the water leakage signal lead.

[0009] Preferably, the alarm is a buzzer or an indicator light.

[0010] Preferably, the controller is a controller of a circuit integrated with a farad capacitor.

[0011] Preferably, a back adhesive layer is provided on the bottom surface of the substrate.

[0012] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0013] This solution designs a water leakage detection module composed of a substrate and two copper foil electrodes. When the resistance between the two copper foil electrodes is greater than a preset resistance threshold, it indicates that the electric water heater is not leaking. When the resistance between the two copper foil electrodes is less than the preset resistance threshold, it indicates that the electric water heater is leaking. Compared with the traditional water immersion detection rope, the structure of the water leakage detection module in this solution will increase the area in contact with water and improve the sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural explosion diagram of an electric water heater with a water leakage detection alarm;

[0015] Figure 2 It is a schematic diagram of one embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of one embodiment of the utility model;

[0017] Figure 4 It is a schematic diagram of one embodiment of the present invention.

[0018] Among them, 1. casing; 2. water leakage detection module; 3. controller; 4. alarm; 5. first inner tank; 6. water leakage signal lead; 7. second inner tank; 8. control box; 11. bottom plate; 21. substrate; 22. copper foil electrode; 210. adhesive layer. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0020] In the description of the present invention, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is more than two.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "splicing", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] An electric water heater with water leakage detection and alarm, comprising a housing 1, a water leakage detection module 2, a controller 3 and an alarm 4, wherein the water leakage detection module 2 comprises a substrate 21 and at least two copper foil electrodes 22;

[0024] The water leakage detection module 2, the controller 3 and the alarm 4 are all arranged inside the housing 1, and the water leakage detection module 2 and the alarm 4 are electrically connected to the controller 3; the two copper foil electrodes 22 are both arranged on the top surface of the substrate 21, and the two copper foil electrodes 22 are adjacent and densely arranged.

[0025] An electric water heater with a water leakage detection alarm in this solution, such as Figure 1-2 As shown, in this embodiment, two copper foil electrodes 22 are provided. The water leakage detection module 2 can collect the resistance between the two copper foil electrodes 22 and feed it back to the controller 3. The controller 3 receives the resistance between the two copper foil electrodes 22 and compares the resistance between the two copper foil electrodes 22 with the preset resistance threshold to determine whether the electric water heater is leaking. When the resistance between the two copper foil electrodes 22 is greater than the preset resistance threshold, it indicates that the electric water heater is not leaking. When the resistance between the two copper foil electrodes 22 is less than the preset resistance threshold, it indicates that the electric water heater is leaking, and an alarm signal is generated and sent to the alarm 4. After receiving the alarm signal, the alarm 4 generates an alarm prompt to warn the user. Further explanation, since the two copper foil electrodes 22 are adjacent and densely arranged, when a small amount of water leakage occurs in the electric water heater, the resistance between the two copper foil electrodes 22 can be changed, thereby achieving the accuracy of water leakage detection.

[0026] This solution designs a water leakage detection module 2 composed of a substrate 21 and two copper foil electrodes 22. When the resistance between the two copper foil electrodes 22 is greater than a preset resistance threshold, it indicates that the electric water heater has no water leakage. When the resistance between the two copper foil electrodes 22 is less than the preset resistance threshold, it indicates that the electric water heater has water leakage. Compared with the traditional water immersion detection rope, the structure of the water leakage detection module 2 in this solution will increase the area in contact with water and improve the sensitivity.

[0027] Preferably, the water leakage detection module 2 is made of a soft film material or a rigid PCB board material. In one embodiment, for a vertical electric water heater, when the water leakage detection module 2 is made of a rigid PCB board material, Figure 1 As shown, it can be installed on the flat bottom plate 11 of the housing 1; when the water leakage detection module 2 is made of a soft film material, it can be wrapped around the arc surface of the upper end or the middle part of the first inner tank 5 inside the electric water heater. In another embodiment, for a horizontal electric water heater, when the water leakage detection module 2 is made of a rigid PCB board material, as shown Figure 4 As shown, it can be installed on the inner surface of the control box 8 of the electric water heater; when the water leakage detection module 2 is made of a soft film material, it can be installed on the arc surface at the bottom end of the second inner tank 7 inside the electric water heater.

[0028] Preferably, it further comprises a water leakage signal lead 6, and the two copper foil electrodes 22 are electrically connected to the controller 3 via the water leakage signal lead 6. Figure 1 As shown, since the two copper foil electrodes 22 are electrically connected to the controller 3 through the water leakage signal lead 6, the water leakage detection module 2 and the controller 3 can conduct electrical signals.

[0029] Preferably, the alarm 4 is a buzzer or an indicator light. In one embodiment, when the alarm 4 is a buzzer, when the electric water heater is detected to have a water leak and an alarm signal is sent to the buzzer, the buzzer will sound an alarm; in another embodiment, when the alarm 4 is an indicator light, when the electric water heater is detected to have a water leak and an alarm signal is sent to the indicator light, the indicator light will light up or flash.

[0030] Preferably, the controller 3 is a controller of a circuit integrated with a farad capacitor (not shown in the figure). In this embodiment, since the controller 3 is a controller of a circuit integrated with a farad capacitor, the power supply of the electric water heater can supply power to the entire controller 3 when powered on, and at the same time charge the farad capacitor in the controller 3 to store electricity, and the water leakage detection module 2 can also be powered to work. When the external power is cut off, the farad capacitor in the controller 3 starts working, supplies power to the entire controller 3 and the water leakage detection module 2, and ensures that the electric water heater with a water leakage detection alarm can detect water leakage normally and alarm.

[0031] Preferably, the bottom surface of the substrate 21 is provided with a backing layer 210. Figure 3 As shown, since the bottom surface of the substrate 21 is provided with a backing layer 210, the backing layer 210 is usually made of a sticky material, which can facilitate the water leakage detection module 2 to be pasted or fixed on the surface of the arc-shaped inner tank 5 inside the electric water heater or the surface of the bottom plate 11 of the casing 1.

[0032] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. An electric water heater with water leakage detection alarm, characterized in that: It includes a housing, a water leakage detection module, a controller and an alarm, wherein the water leakage detection module includes a substrate and at least two copper foil electrodes; The water leakage detection module, the controller and the alarm are all arranged inside the housing, and the water leakage detection module and the alarm are both electrically connected to the controller; the two copper foil electrodes are both arranged on the top surface of the substrate, and the two copper foil electrodes are adjacently and densely arranged.

2. An electric water heater with water leakage detection alarm according to claim 1, characterized in that: The water leakage detection module is made of soft film material or rigid PCB board material.

3. An electric water heater with water leakage detection alarm according to claim 1, characterized in that: It also includes a water leakage signal lead, and the two copper foil electrodes are electrically connected to the controller through the water leakage signal lead.

4. The electric water heater with water leakage detection alarm according to claim 1, characterized in that: The alarm is a buzzer or an indicator light.

5. The electric water heater with water leakage detection alarm according to claim 1, characterized in that: The controller is a controller of a circuit integrated with a farad capacitor.

6. The electric water heater with water leakage detection alarm according to claim 1, characterized in that: The bottom surface of the substrate is provided with a back adhesive layer.

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