External control disconnection type electric heating faucet

Abstract

The utility model relates to an external control disconnection type electric heating faucet which comprises a power input end, a control module and a load module. The power supply input end is provided with a trip coil, and the input end of the trip coil is connected with the output end of a solid-state relay. The control module comprises a silicon controlled rectifier SCR1 and an optical coupler U2, the control electrode of the silicon controlled rectifier is connected with the output end of the solid-state relay and the output end of the optical coupler U2, the input end of the optical coupler U2 is provided with a first voltage butt joint, the load module is also connected with the power input end, and the load module comprises a temperature sensor and a microcontroller. The output end of the temperature sensor is connected with the input end of the microcontroller and the second voltage butt joint, and the first voltage butt joint is connected with the second voltage butt joint; according to the external structure, the problem that the control module is easy to damage when being placed in an internal high-temperature and high-humidity environment can be avoided, meanwhile, the external structure is simpler, and the maintenance is faster.

Description

Technical Field

[0001] The utility model relates to an electric water faucet controller, in particular to an externally controlled disconnection type electric water faucet. Background Art

[0002] Traditional electric water faucets have a built-in control structure. When it detects that the internal temperature of the faucet is lower than a certain value or higher than a certain value, it will control the faucet to disconnect to prevent water from continuing to flow in and out and damaging the pipes. The disadvantage of such a built-in control structure of an electric water faucet is that the control system is easily damaged if it works in a high temperature and high humidity environment for a long time. The faucet needs to be disassembled for maintenance, which makes the maintenance complicated and expensive, and it is impossible to achieve quick on-site maintenance. Utility Model Content

[0003] The utility model aims to provide an externally controlled disconnected electric water faucet, which solves the problem that the control part of the existing electric water faucet is easily damaged because it is placed inside.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides an externally controlled disconnection type electric hot water faucet, comprising

[0006] A power input terminal; the power input terminal is provided with a trip coil, and the input terminal of the trip coil is connected to the output terminal of the solid-state relay;

[0007] Control module; the control module includes a thyristor SCR1 and an optical coupler U2, the control electrode of the thyristor is connected to the output end of the solid-state relay and the output end of the optical coupler U2, and the input end of the optical coupler U2 is provided with a first voltage connection terminal,

[0008] A load module is also connected to the power input end, the load module includes a temperature sensor and a microcontroller, the output end of the temperature sensor is connected to the input end of the microcontroller and the second voltage docking terminal, and the second voltage docking terminal is connected to the second voltage docking terminal.

[0009] Furthermore, the output end of the optical coupler U2 is also connected to a normally open switch, and the normally open switch is also connected to a solid-state relay.

[0010] Furthermore, the corresponding temperature threshold set in the temperature sensor is 2°C~70°C.

[0011] Furthermore, it also includes a leakage protection module arranged between the power input terminal and the load module, and the leakage protection module is also connected to the control electrode of the thyristor SCR1.

[0012] Furthermore, the leakage protection module also includes a test switch, which is in a normally open state and has two ends connected to the battery input terminals.

[0013] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0014] The utility model discloses an externally controlled disconnect type electric water faucet, in which a control module is arranged between a load module, i.e., the body of the electric water faucet and a power input terminal. The control module and the load module are connected via a docking joint. The load module comprises a temperature sensor. After sensing that the internal temperature is lower than or higher than a certain value, the temperature sensor transmits a high-voltage signal, which is transmitted to the control module via the docking joint. After receiving the high-voltage signal, the electric coupler of the control module drives the tripping coil to disconnect the power input terminal and the body, so that the electric water faucet stops working. The external structure can avoid the problem that the control module is easily damaged when placed in an internal high temperature and high humidity environment. At the same time, the external structure is simpler and the response is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0016] Figure 1 It is a circuit diagram of Embodiment 1 of the utility model;

[0017] Figure 2 This is a circuit diagram of Example 2 of the utility model.

[0018] The reference numerals are described as follows:

[0019] 1. Power input terminal; 2. Trip coil; 3. Solid-state relay;

[0020] 4. First voltage connector; 5. Normally open switch;

[0021] 6. Load module; 7. Second voltage connector;

[0022] 8. Leakage protection module; 9. Test switch. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Example 1 Figure 1 As shown, it includes a power input terminal 1, a control module and a load module 6;

[0027] The power input terminal 1 is provided with a trip coil 2. Under normal conditions, the trip coil works normally. When the power input load is in place, the input terminal of the trip coil 2 is connected to the output terminal of the solid-state relay 3. The solid-state relay 3 is used to control the action of the trip coil 2. The input terminal of the trip coil 2 is connected to a control module. A display light and a current-limiting resistor are connected in parallel to the input terminal of the trip coil 2. Under normal conditions, the display light is on.

[0028] The control module includes a thyristor SCR1 and an optocoupler U2. The control electrode of the thyristor SCR1 is connected to the input end of the solid-state relay 3 on the one hand, and is connected to the output end of the optocoupler U2 on the other hand. The input end of the optocoupler U2 is provided with a first voltage docking terminal 4. The first voltage docking terminal 4 receives information from the load module 6 and transmits it to the optocoupler U2. When the optocoupler U2 receives a signal, the optocoupler U2 is actuated to emit a voltage of a certain value, which will turn on the thyristor SCR1. After turning on, the thyristor SCR1 will transmit information to the solid-state relay, and the output end of the solid-state relay 3 will output a signal, so that the tripping coil 2 is energized and disconnected, so that the power input end is disconnected.

[0029] A normally open switch 5 is also connected between the output end of the optocoupler U2 and the input end of the solid-state relay. Under normal conditions, due to the existence of the normally open switch 5, this line is in a disconnected state, and the solid-state relay and the optocoupler are not directly connected. When testing before use, the normally open switch 5 is closed to make this path in a connected state. At this time, the solid-state relay 3, the output end of the optocoupler and the thyristor SCR1 are in a conducting state. At this time, observe whether the trip coil 2 is actuated to verify whether the control module is connected correctly.

[0030] Load module 6, load module 6 is also connected to the contact of the normally closed switch of the power input terminal 1, load module 6 includes a temperature sensor, a microcontroller and a faucet body, the output end of the temperature sensor is connected to the input end of the microcontroller and the second voltage connector 7, and the first connector is connected to the second connector. The microcontroller is used to receive information from the temperature sensor and convert the information into a signal to control whether the heating element in the faucet body is turned on or off. The temperature sensor threshold in this example is 2℃~70℃. When the temperature sensor senses that the temperature of the load part exceeds 70℃ or is lower than 2℃, it will simultaneously transmit a high voltage to the microprocessor and the second connector, and the second connector transmits the high voltage to the first connector, thereby realizing the on and off of the power input terminal 1.

[0031] Example 2 Figure 2 As shown, compared with the embodiment, this example has an additional leakage protection module 8 arranged between the power input terminal 1 and the load module 6, and the normally closed switch 5 is reduced. The leakage protection module 8 is also connected to the control electrode of the thyristor SCR1. The leakage protection module 8 is used to protect the circuit. When leakage occurs, it quickly feeds back to the control electrode of the thyristor SCR1 to turn it on. The control electrode of the thyristor SCR1 will transmit information to the solid-state relay, and the output end of the solid-state relay 3 will output a signal to trip the trip coil 2.

[0032] The leakage protection module 8 also includes a test switch 9, which is in a normally open state and has both ends connected to the battery input terminal. In this way, before a specific leakage occurs, the test switch 9 is pressed to simulate the leakage state. When pressed, if the normally closed switch is disconnected, it means that the structure has the action of disconnecting the power supply in the leakage state and has leakage protection.

[0033] The utility model places the disconnection control structure outside the electric water faucet, thus avoiding the complexity of the internal structure, and the external control structure is more convenient for maintenance.

[0034] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An externally controlled disconnection type electric water faucet, characterized in that: include A power input terminal; the power input terminal is provided with a trip coil, and the input terminal of the trip coil is connected to the output terminal of the solid-state relay; Control module; the control module includes a thyristor SCR1 and an optical coupler U2, the control electrode of the thyristor is connected to the output end of the solid-state relay and the output end of the optical coupler U2, and the input end of the optical coupler U2 is provided with a first voltage connection terminal, A load module is also connected to the power input end, the load module includes a temperature sensor and a microcontroller, the output end of the temperature sensor is connected to the input end of the microcontroller and the second voltage docking terminal, and the first voltage docking terminal is connected to the second voltage docking terminal.

2. An externally controlled disconnection type electric water faucet according to claim 1, wherein: The output end of the optical coupler U2 is also connected to a normally open switch, and the normally open switch is also connected to a solid-state relay.

3. An externally controlled disconnection type electric water faucet according to claim 1, wherein: The corresponding temperature threshold set in the temperature sensor is 2°C~70°C.

4. An externally controlled disconnection type electric water faucet according to claim 1, wherein: It also includes a leakage protection module arranged between the power input terminal and the load module, and the leakage protection module is also connected to the control electrode of the thyristor SCR1.

5. An externally controlled disconnection type electric water faucet according to claim 4, wherein: The leakage protection module also includes a test switch, which is in a normally open state and has two ends connected to the battery input terminal.

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