Instant water heating integrated module protection structure

Abstract

The utility model discloses a protection structure of an instant water heating integrated module. The protection structure is characterized in that a water flow channel is formed in a box body; the ceramic heating sheet is arranged in the box body and used for heating water flow; the water inlet electromagnetic valve and the water outlet elbow are respectively connected with the water inlet end and the water outlet end of the box body, and the water inlet end is also provided with a water inlet elbow; the water outlet is formed in the tail end of the water outlet elbow; the water inlet temperature sensor and the water outlet temperature sensor are arranged at the water inlet end and the water outlet end of the waterway respectively. The automatic reset temperature control switch is electrically connected with the ceramic heating sheet and is used for cutting off a power supply during overtemperature; the thermal fuse wire is installed at the bottom of the box body, located under the ceramic heating piece and used for cutting off a power supply permanently during dry burning. The water inlet temperature sensor and the water outlet temperature sensor monitor the water temperature in real time, and the main control board cuts off the power supply when the temperature is overhigh; the automatic reset temperature control switch senses the outlet water temperature, disconnects the circuit and automatically resets when the temperature exceeds the limit; the thermal fuse wire is located under the ceramic chip, the power supply is cut off permanently during dry burning, and the three-level protection avoids the fire risk.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a protection structure for an instantaneous water heating integrated module. Background Technology

[0002] Currently, integrated ceramic plate heater modules are widely used in smart bathroom equipment (such as smart toilets), but they have the following technical problems in actual use: 1. Scale buildup in the water circuit: Traditional heaters do not have effective scale inhibition devices, and inorganic salts in the water flow are prone to precipitate and form scale on the surface of the ceramic heating plate, resulting in a decrease in heat exchange efficiency and even affecting the life of the heating element; 2. Insufficient safety protection: The existing structure lacks multiple temperature control protection mechanisms. When abnormal situations such as dry burning or overheating occur, the power cannot be cut off in time, posing a safety hazard; 3. Defects in water circuit design: The water inlet is not treated with anti-siphon treatment, which may cause water stored in the tank to flow back and contaminate the municipal water pipes; the water pump suction port and the heating element are not set in a reasonable position, which may easily cause dry pumping, resulting in uneven heat dissipation of the ceramic plate and cracking; 4. Poor maintenance convenience: The traditional structure does not have a drainage device. After production and testing or in extreme weather, water stored in the tank is prone to freezing and expansion, which may cause damage to the tank, and long-term water storage may breed bacteria; 5. Insufficient heat dissipation design. Utility Model Content

[0003] The purpose of this utility model is to provide a protection structure for an instantaneous water heating integrated module to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a protection structure for an instantaneous water heating integrated module, comprising:

[0005] The box has an internal water flow channel, and a box cover is provided on the top of the box.

[0006] Ceramic heating elements are installed inside the box to heat the water flow;

[0007] The inlet solenoid valve and the outlet elbow are respectively connected to the inlet end and the outlet end of the tank, and the inlet end is also provided with an inlet elbow.

[0008] The water outlet is located at the end of the water outlet elbow;

[0009] The inlet water temperature sensor and the outlet water temperature sensor are respectively installed at the inlet and outlet of the water circuit;

[0010] An automatic reset temperature control switch is electrically connected to the ceramic heating element and is used to disconnect the power supply when the temperature exceeds the limit.

[0011] A thermal break wire is installed at the bottom of the housing and directly below the ceramic heating element, used to permanently disconnect the power supply during dry burning.

[0012] A scale inhibitor box is located at the water inlet end and contains a solid slow-release scale inhibitor.

[0013] Water pump assembly, used to drive water circulation;

[0014] An atmospheric pressure interface is located on the housing, and its height is higher than the upper limit liquid level of the water level switch;

[0015] The circuit board assembly is electrically connected to the inlet water temperature sensor, the outlet water temperature sensor, and the automatic reset temperature control switch.

[0016] A silicon controlled rectifier (SCR) is disposed on the circuit board assembly and is thermally connected to the inlet and outlet copper plates.

[0017] An external communication interface is located in the enclosure and is used to receive heating commands;

[0018] One end of the water inlet elbow is connected to the water pump assembly, and the other end is connected to the heating area where the ceramic heating element is located, in order to guide water flow into the heating channel.

[0019] Preferably, the scale inhibitor box is connected to the water inlet channel of the tank, and the upper opening of the water inlet channel and the scale inhibitor box are both located above the upper limit liquid level of the water level switch, forming an anti-siphon structure.

[0020] Preferably, the water pump assembly's suction port and the ceramic heating element are both located below the lowest liquid level of the water level switch to avoid dry pumping.

[0021] Preferably, a drain plug is provided at the bottom of the box to drain the water stored inside the box.

[0022] Preferably, the protection structure of the instant water heating integrated module further includes inlet and outlet copper plates, which are connected to the thyristor by screws and thermally conductive silicone grease is applied between them. The water flow at the inlet end flows through the recessed structure of the inlet and outlet copper plates to carry away the heat generated by the thyristor.

[0023] Preferably, the automatic reset temperature control switch is connected to the inlet and outlet copper plates by screws and thermal grease is applied between them. When the water flows through the inlet and outlet copper plates at the outlet end, the automatic reset temperature control switch can sense the outlet water temperature and control the power supply of the ceramic heating element.

[0024] Preferably, the thermal fuse is fastened to the housing by a thermal fuse clip and makes reliable contact with the bottom surface of the housing. The thermal fuse is electrically connected to the live wire end of the ceramic heating element and the circuit board assembly.

[0025] Preferably, a first baffle and a second baffle are provided in the water channel to uniformly distribute the water flow and optimize heating efficiency.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] 1. High-efficiency scale inhibition and scale prevention: The inlet end is equipped with a solid slow-release scale inhibitor and scale inhibitor box, which can disperse the insoluble inorganic salts in the water, prevent scale from depositing on the surface of the ceramic heating element, improve heat exchange efficiency, and at the same time reduce the clogging of the water outlet of the smart toilet spray bar and extend the service life of the spray bar.

[0028] 2. Multiple safety protection mechanisms: The inlet and outlet water temperature sensors monitor the water temperature in real time, and the main control board cuts off the power when the temperature exceeds the limit; the automatic reset temperature control switch senses the outlet water temperature, disconnects the circuit and automatically resets when the temperature exceeds the limit; the thermal fuse is located directly below the ceramic plate, and permanently cuts off the power supply when dry burning, with three levels of protection to avoid fire risk.

[0029] 3. Optimized water circuit and fault prevention design: Anti-siphon structure (the upper part of the water inlet channel and the scale inhibitor box are higher than the highest water level) to prevent water backflow and pollution; the water pump suction port and ceramic plate are located below the lowest liquid level to avoid cracking caused by dry pumping; the atmospheric pressure interface balances the internal and external pressure of the tank to prevent the tank from deforming when the water level changes.

[0030] 4. Convenient maintenance and anti-freeze design: The drain plug at the bottom of the cabinet supports drainage after production and testing as well as drainage by the user, which avoids water freezing and damaging the cabinet in low-temperature environments, and also reduces the risk of bacteria growth from long-term water storage.

[0031] 5. High-efficiency heat dissipation and integrated design: The inlet and outlet copper plates are connected to the thyristor through thermal grease. Water flows through the concave structure of the copper plates and carries away heat, improving heat dissipation efficiency. The modular integrated design (heating, temperature control, scale inhibition, and drainage in one unit) is suitable for installation in small spaces, reducing the complexity of equipment assembly. Attached Figure Description

[0032] Figure 1 This is a first three-dimensional structural diagram of the present invention;

[0033] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the first explosive structure of this utility model;

[0035] Figure 4 This is a schematic diagram of the second explosive structure of this utility model;

[0036] Figure 5 This is a schematic diagram of the third explosive structure of this utility model;

[0037] Figure 6 This is a schematic diagram of the drain plug structure of this utility model;

[0038] Figure 7This is a schematic diagram of the outlet structure of this utility model.

[0039] In the diagram: 1. Housing, 2. Outlet elbow, 3. Outlet water temperature sensor, 4. Ceramic heating element, 5. Second baffle plate, 6. Automatic reset temperature control switch, 7. First baffle plate, 8. Inlet solenoid valve, 9. Inlet and outlet copper plates, 10. Inlet water temperature sensor, 11. Scale inhibitor box, 12. Solid slow-release scale inhibitor, 13. Housing cover, 14. Water level switch, 15. Water pump assembly, 16. Inlet elbow, 17. Circuit board assembly, 18. SCR, 19. External communication interface, 20. Drain plug, 21. Thermofused wire clip, 22. Outlet, 23. Normal pressure interface. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Please see Figure 1-7 This utility model provides a technical solution: an instantaneous water heating integrated module protection structure, comprising: a water flow channel formed inside a housing 1, and a housing cover 13 on the top of the housing 1; a ceramic heating element 4 disposed inside the housing 1 for heating the water flow; an inlet solenoid valve 8 and an outlet elbow 2 respectively connected to the inlet and outlet ends of the housing 1, and an inlet elbow 16 also provided at the inlet end; an outlet 22 disposed at the end of the outlet elbow 2; an inlet temperature sensor 10 and an outlet temperature sensor 3 respectively disposed at the inlet and outlet ends of the water circuit; an automatic reset temperature control switch 6 electrically connected to the ceramic heating element 4 for disconnecting the power supply when the temperature exceeds the limit; and a thermal fuse installed at the bottom of the housing 1 and directly below the ceramic heating element 4. The system is designed to permanently disconnect the power supply during dry burning; the scale inhibitor box 11 is located at the water inlet and contains a solid slow-release scale inhibitor 12; the water pump assembly 15 is used to drive water circulation; the atmospheric pressure interface 23 is located on the housing 1, and its height is higher than the upper limit liquid level of the water level switch 14; the circuit board assembly 17 is electrically connected to the inlet water temperature sensor 10, the outlet water temperature sensor 3, and the automatic reset temperature control switch 6; the thyristor 18 is located on the circuit board assembly 17 and is thermally connected to the inlet and outlet copper plates 9; the external communication interface 19 is located on the housing 1 and is used to receive heating commands; one end of the inlet elbow 16 is connected to the water pump assembly 15, and the other end is connected to the heating area where the ceramic heating plate 4 is located, and is used to guide water flow into the heating channel.

[0042] The scale inhibitor box 11 is connected to the water inlet channel of the tank 1, and the upper opening of the water inlet channel and the scale inhibitor box 11 are both located above the upper limit liquid level of the water level switch 14, forming an anti-siphon structure.

[0043] The water pump assembly 15's suction port and ceramic heating element 4 are both located below the lowest liquid level of the water level switch 14 to avoid dry pumping.

[0044] A drain plug 20 is provided at the bottom of the tank 1 to drain the water stored in the tank 1.

[0045] The protection structure of the instant water heating integrated module also includes inlet and outlet copper plates 9, which are connected to the silicon controlled rectifier 18 by screws and thermal grease is applied between them. The water flow at the inlet end flows through the recessed structure of the inlet and outlet copper plates 9 to carry away the heat generated by the silicon controlled rectifier 18.

[0046] The automatic reset temperature control switch 6 is connected to the inlet and outlet copper plates 9 by screws and thermal grease is applied between them. When the water flows through the inlet and outlet copper plates 9 at the outlet end, the automatic reset temperature control switch 6 can sense the outlet water temperature and control the power supply of the ceramic heating element 4.

[0047] The thermal fuse is fastened to the housing 1 by the thermal fuse clip 21 and makes reliable contact with the bottom surface of the housing 1. The thermal fuse is electrically connected to the live wire end of the ceramic heating element 4 and the circuit board assembly 17.

[0048] A first baffle plate 7 and a second baffle plate 5 are installed in the water channel to uniformly distribute the water flow and optimize heating efficiency.

[0049] The water inlet is connected to an external water source via a water inlet solenoid valve 8, and a water inlet elbow 16 is provided to guide water flow into the interior of the housing 1.

[0050] The outlet end is connected to the outlet elbow 2, and its end is provided with an outlet 22 for outputting heated water.

[0051] The inlet water temperature sensor 10 is installed at the water inlet end of the water circuit, and the outlet water temperature sensor 3 is installed at the outlet end. Both are electrically connected to the circuit board assembly 17 to monitor the inlet and outlet water temperatures in real time and feed them back to the main control system.

[0052] The water pump assembly 15 is installed in the water circuit, and its suction port is located below the lowest liquid level of the lower limit switch 14. By driving the water flow to circulate, it ensures the uniformity of heating.

[0053] A first baffle plate 7 and a second baffle plate 5 are installed in the water channel to disrupt the water flow path, so as to make the water flow evenly distributed and optimize the heating efficiency.

[0054] The scale inhibitor box 11 is located at the water inlet end and contains a solid slow-release scale inhibitor 12. It is connected to the water inlet channel of the tank 1. The upper opening of the water inlet channel and the scale inhibitor box 11 are both located above the upper limit liquid level of the water level switch 14, forming an anti-siphon structure to prevent the water stored in the tank 1 from flowing back into the municipal water pipeline.

[0055] Solid slow-release scale inhibitor 12 can disperse insoluble inorganic salts in water, prevent them from forming scale on the surface of ceramic heating element 4, improve heat exchange efficiency and extend service life.

[0056] The housing 1 is equipped with an atmospheric pressure interface 23, which is higher than the upper limit liquid level of the water level switch 14. When the water level inside the tank changes, the internal and external pressure is balanced through the atmospheric pressure interface 23 to avoid structural damage caused by pressure difference.

[0057] The automatic reset temperature control switch 6 is electrically connected to the ceramic heating element 4 and is also connected to the inlet and outlet copper plates 9 via screws, with thermal grease applied between them. When water flows through the inlet and outlet copper plates 9 at the outlet, the automatic reset temperature control switch 6 senses the outlet water temperature. When the temperature exceeds the set value, it disconnects the power supply to the ceramic heating element 4, and automatically resets after the temperature drops.

[0058] The thermal fuse is installed at the bottom of the housing 1, directly below the ceramic heating element 4. It is fastened to the housing 1 by the thermal fuse clip 21 to ensure reliable contact with the bottom surface of the housing 1. The thermal fuse is electrically connected to the live wire end of the ceramic heating element 4 and the circuit board assembly 17. If a module failure causes the ceramic heating element 4 to dry burn and the temperature exceeds the set value, the thermal fuse will permanently disconnect the power supply.

[0059] The inlet and outlet copper plates 9 and the thyristor 18 are connected by screws, with thermal grease applied in between. When the water flows through the recessed structure of the inlet and outlet copper plates 9, it carries away the heat generated by the thyristor 18 during operation, thus preventing the component from overheating and being damaged.

[0060] The circuit board assembly 17 is integrated into the module and is electrically connected to the inlet water temperature sensor 10, the outlet water temperature sensor 3, and the automatic reset temperature control switch 6. It receives temperature signals and controls the heating logic.

[0061] The thyristor 18 is mounted on the circuit board assembly 17 and heats up through the inlet and outlet copper plates 9. The external communication interface 19 is located on the housing 1 and is used to receive external heating commands to trigger the water pump assembly 15 and the ceramic heating plate 4 to work.

[0062] A drain plug 20 is installed at the bottom of the box 1. During production testing or transportation and storage, it can be rotated off to drain the water, which prevents the water from freezing and expanding in low temperature environments and causing damage to the box 1. It also facilitates daily maintenance by users and prevents the water from deteriorating after long-term storage.

[0063] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0064] Water circulation: Municipal water enters the tank 1 through the inlet solenoid valve 8, overflows through the inlet and outlet copper plates 9 and the inlet channel to the scale inhibitor box 11, and is stored in the tank 1; when the water level reaches the upper limit of the water level switch 14, the solenoid valve closes; when it is below the lower limit, water replenishment is opened; after the external communication interface 19 receives the heating command, the water pump assembly 15 starts, and the water flows through the inlet elbow 16 into the ceramic heating plate 4 area, and the water flows evenly through the baffle plate, and flows out from the outlet elbow 2 after passing through the outlet water temperature sensor 3 and the inlet and outlet copper plates 9.

[0065] Heating and Protection: The ceramic heating element 4 heats the water flow, and the inlet and outlet water temperature sensors monitor the temperature in real time; when the outlet water temperature exceeds the program setting value or the automatic reset temperature control switch 6 senses that the temperature exceeds the limit, the power supply to the ceramic heating element 4 is disconnected; if dry burning occurs, the thermal fuse permanently cuts off the power supply; the working heat of the thyristor 18 is carried away by the water flow through the inlet and outlet copper plates 9 to ensure the safe operation of the module.

[0066] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protection structure for an instantaneous water heating integrated module, characterized in that, include: The box (1) has a water flow channel inside, and the top of the box (1) is provided with a box cover (13). A ceramic heating element (4) is installed inside the housing (1) to heat the water flow; The inlet solenoid valve (8) and the outlet elbow (2) are respectively connected to the inlet end and the outlet end of the housing (1). The inlet end is also provided with an inlet elbow (16). The water outlet (22) is located at the end of the water outlet elbow (2); The inlet water temperature sensor (10) and the outlet water temperature sensor (3) are respectively installed at the inlet and outlet of the water circuit; An automatic reset temperature control switch (6) is electrically connected to the ceramic heating element (4) and is used to disconnect the power supply when the temperature exceeds the limit; A thermal break wire is installed at the bottom of the housing (1) and directly below the ceramic heating element (4) to permanently disconnect the power supply during dry burning; A scale inhibitor box (11) is provided at the water inlet end and contains a solid slow-release scale inhibitor (12). Water pump assembly (15) for driving water circulation; The atmospheric pressure interface (23) is located on the housing (1) and its height is higher than the upper limit liquid level of the water level switch (14); The circuit board assembly (17) is electrically connected to the inlet water temperature sensor (10), the outlet water temperature sensor (3), and the automatic reset temperature control switch (6); A thyristor (18) is disposed on the circuit board assembly (17) and is thermally connected to the inlet and outlet copper sheet (9); An external communication interface (19) is provided in the housing (1) for receiving heating commands; One end of the water inlet elbow (16) is connected to the water pump assembly (15), and the other end is connected to the heating area where the ceramic heating element (4) is located, so as to guide the water flow into the heating channel.

2. The protection structure for an instantaneous water heating integrated module according to claim 1, characterized in that: The scale inhibitor box (11) is connected to the water inlet channel of the box body (1), and the upper opening of the water inlet channel and the scale inhibitor box (11) are both located above the upper limit liquid level of the water level switch (14), forming an anti-siphon structure.

3. The protection structure for an instantaneous water heating integrated module according to claim 2, characterized in that: The water inlet of the water pump assembly (15) and the ceramic heating element (4) are both located below the lowest liquid level of the lower limit position of the water level switch (14) to avoid dry pumping.

4. The protection structure for an instantaneous water heating integrated module according to claim 3, characterized in that: The bottom of the box (1) is provided with a drain plug (20) for draining the water stored in the box (1).

5. The protection structure for an instantaneous water heating integrated module according to claim 4, characterized in that: The instant water heating integrated module protection structure also includes inlet and outlet copper plates (9), which are connected to the thyristor (18) by screws and are coated with thermal grease. The water flow at the inlet end flows through the recessed structure of the inlet and outlet copper plates (9) to carry away the heat generated by the thyristor (18).

6. The protection structure for an instantaneous water heating integrated module according to claim 5, characterized in that: The automatic reset temperature control switch (6) is connected to the inlet and outlet copper plates (9) by screws and thermal grease is applied between them. When the water flows through the inlet and outlet copper plates (9) at the outlet end, the automatic reset temperature control switch (6) can sense the outlet water temperature and control the power supply of the ceramic heating element (4).

7. The protection structure for an instantaneous water heating integrated module according to claim 6, characterized in that: The hot fuse is fastened to the housing (1) by the hot fuse clip (21) and is in reliable contact with the bottom surface of the housing (1). The hot fuse is electrically connected to the live wire end of the ceramic heating element (4) and the circuit board assembly (17).

8. The protection structure for an instantaneous water heating integrated module according to claim 7, characterized in that: The water path is provided with a first baffle (7) and a second baffle (5) to uniform water flow and optimize heating efficiency.

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