Intelligent closestool water heating module with dual temperature control protection

Abstract

The utility model discloses an intelligent closestool water heating module with double temperature control protection, which comprises a shell, a heating cavity is arranged in the shell, and the heating cavity is provided with a water inlet hole and a water outlet hole; a first temperature control switch and a second temperature control switch are arranged on the shell, and the first temperature control switch is electrically connected with one end of the heating unit; and the second temperature control switch is electrically connected with the other end of the heating unit, so that the first temperature control switch, the heating unit and the second temperature control switch form an annular loop among external power supply units. The first temperature control switch and the second temperature control switch which are different in turn-off temperature are arranged, and the turn-off temperature of the first temperature control switch is higher than that of the second temperature control switch, so that the situation that a human body is scalded due to over-high water temperature caused by failure of the second temperature control switch is prevented; and the safety of the intelligent closestool water heating module is improved.

Description

Technical Field

[0001] The utility model belongs to the field of intelligent toilets, and in particular relates to an intelligent toilet water heating module with dual temperature control protection. Background Art

[0002] A smart toilet is a sanitary ware that integrates multiple high-tech features, designed to provide a more comfortable, hygienic, and convenient user experience. The water heating module is a key component of a smart toilet, primarily responsible for providing warm water flushing. As people's quality of life improves, consumers' expectations for smart toilets are also rising. For example, consumers prefer smart toilets with 3C certification. Traditional toilet water heating modules typically only have a single temperature control protection mechanism, using a single temperature sensor to monitor and control water temperature to prevent overheating, which could cause burns or damage to the device. However, this single temperature control protection mechanism has limited responsiveness to unexpected situations. For example, due to aging of the heating tube or a control circuit failure, the water temperature may rise sharply. Due to delayed response times or improperly set protection thresholds, the single temperature control protection mechanism may not be able to cut off power in a timely manner. This increases the risk of burns or damage to the device, making it difficult to meet 3C certification standards.

[0003] Prior art, such as patent publication number CN216924741U, discloses a water heater suitable for smart toilets. This uses a single thermostat to control the on / off power of the heating element to achieve temperature control. However, this single temperature control protection mechanism may fail to cut off power in a timely manner due to factors such as response time lag or improperly set protection thresholds. This increases the risk of user burns or device damage, making it difficult to meet 3C certification standards. Summary of the Invention

[0004] In response to the problems in the existing technology, the utility model proposes an intelligent toilet water heating module with dual temperature control protection, which is provided with a first temperature control switch and a second temperature control switch with different disconnection temperatures. The disconnection temperature of the second temperature control switch is higher than the disconnection temperature of the first temperature control switch, preventing the failure of the first temperature control switch resulting in excessive water temperature and scalding the human body; thereby improving the safety of the intelligent toilet water heating module.

[0005] The utility model is implemented as follows: a smart toilet water heating module with dual temperature control protection, comprising a housing, a heating chamber provided in the housing, a water inlet and a water outlet provided on the side wall of the heating chamber, the heating unit extending from the outside to the inside of the heating chamber; water is introduced into the heating chamber through the water inlet, heated by the heating unit and then discharged from the water outlet; a first temperature control switch and a second temperature control switch are provided on the housing, wherein the disconnection temperature of the first temperature control switch is lower than the disconnection temperature of the second temperature control switch;

[0006] The smart toilet water heater is connected to an external power supply unit, which includes at least a first power supply terminal and a second power supply terminal. The first power supply terminal is electrically connected to one end of the heating unit via the first temperature-controlled switch, and the other end of the heating unit is electrically connected to the second power supply terminal via the second temperature-controlled switch, thereby forming a loop between the external power supply unit, the first temperature-controlled switch, the heating unit, and the second temperature-controlled switch. The first temperature-controlled switch and the second temperature-controlled switch are respectively connected to the two ends of the heating unit, so that the first temperature-controlled switch and the second temperature-controlled switch are respectively arranged on the neutral wire and the live wire of the heating unit. This prevents the first temperature-controlled switch and the second temperature-controlled switch from failing simultaneously when the neutral wire or the live wire of the heating unit is forcibly turned on, thereby improving the reliability of the first temperature-controlled switch and the second temperature-controlled switch.

[0007] Preferably, the first temperature-controlled switch is a self-resetting switch, and the second temperature-controlled switch is a manual kick switch; the reset temperature of the first temperature-controlled switch is lower than the disconnection temperature of the second temperature-controlled switch. A self-resetting switch is a temperature-controlled switch that can automatically connect and disconnect the circuit according to the detected water temperature. When the water temperature is higher than the set upper temperature limit, the self-resetting switch automatically disconnects the circuit, causing the heating unit to stop heating the water in the heating chamber to prevent the water temperature from being too high. When the water temperature is lower than the set lower temperature limit, the self-resetting switch automatically connects the circuit, causing the heating unit to heat the water in the heating chamber to prevent the water temperature in the heating chamber from being too low. A manual kick switch is a temperature-controlled switch that automatically disconnects the circuit according to the detected water temperature. When the water temperature is higher than the set temperature, the kick switch automatically disconnects the circuit, causing the heating unit to stop heating the water in the heating chamber to prevent the water temperature from being too high. The second temperature control switch is used to prevent the water temperature from being too high when the first temperature control switch fails. The disconnection temperature of the second temperature control switch is greater than the disconnection temperature of the first temperature control switch. When the first temperature control switch is working normally, the water temperature in the heating chamber cannot reach the second temperature control switch. Only when the first temperature control switch fails will the second temperature control switch disconnect the circuit, thereby improving the safety of the water heating module; at the same time, since the snap switch will not automatically recover after being disconnected and needs to be manually reset, it can remind the user that the first temperature control switch has failed, thereby improving the convenience of subsequent maintenance.

[0008] Specifically, one side of the shell is provided with an opening, which is interconnected with the heating chamber; a mounting plate is provided at the opening, and the mounting plate is made of metal, and the first temperature-controlled switch is provided on the mounting plate. The first temperature-controlled switch detects the water temperature in the heating chamber by sensing the temperature of the mounting plate. Since there will be an error when the water temperature in the heating chamber is transmitted to the first temperature-controlled switch through the mounting plate, it is necessary to calculate the error value and combine the error value with the set water temperature to obtain the set value of the first temperature-controlled switch. When the water temperature is higher than the upper limit of the set value, the self-resetting switch automatically disconnects the circuit, causing the heating unit to stop heating the water in the heating chamber to prevent the water temperature from being too high; when the water temperature is lower than the lower limit of the set value, the self-resetting switch automatically connects the circuit, causing the heating unit to heat the water in the heating chamber to prevent the water temperature in the heating chamber from being too low.

[0009] Specifically, the heating unit includes a heating tube mounted on a mounting plate. A heating portion is disposed between the two ends of the heating tube. The heating portion is U-shaped or serpentine and extends into the heating chamber. The U-shaped or serpentine heating portion increases the heating area of ​​the heating portion within the heating chamber, thereby improving the heating efficiency of the heating unit.

[0010] Specifically, the mounting plate is fixedly connected to the housing, and a sealing groove is provided on one side of the housing where the mounting plate is fixedly connected, wherein a sealing ring is provided in the sealing groove. The sealing ring is used to improve the sealing performance of the heating chamber, prevent the heating chamber from leaking, and improve the reliability.

[0011] Specifically, it also includes a temperature sensor and a water level sensor;

[0012] The temperature sensor passes through the side wall of the shell from top to bottom and extends into the heating chamber to detect the water temperature in the heating chamber; one end of the water level sensor is connected to the mounting plate, and the other end is connected to the probe of the temperature sensor; when the water level in the heating chamber rises to the probe of the temperature sensor, the mounting plate and the probe of the temperature sensor are connected to form a closed loop. The water level sensor is used to detect whether the temperature sensor is in contact with water, prevent the temperature sensor from failing, improve the reliability of the temperature sensor, and further improve the reliability of the first temperature control switch. At the same time, the water level sensor forms a loop through the mounting plate, and there is no need to set up additional cables, which improves the convenience of the early assembly and later maintenance of the smart toilet water heating module.

[0013] Specifically, the temperature sensor is disposed at the water outlet. Since the hot water heated in the heating chamber flows out of the water outlet, when the first temperature control switch is disposed at the water outlet, the water temperature of the hot water flowing out of the heating chamber can be more accurately detected, thereby further improving the reliability of the first temperature control switch.

[0014] Preferably, the water inlet is provided at the bottom of the side wall of the heating chamber, and the height of the water outlet is higher than that of the water inlet. When the water outlet is higher than the water inlet, cold water entering through the water inlet is prevented from immediately flowing out through the water outlet, thereby increasing the residence time of the cold water in the heating chamber, allowing the cold water to be fully heated to the set temperature, and improving the reliability of the heating chamber.

[0015] Specifically, the water outlet is provided at the top of the side wall of the heating chamber, and the heating unit is provided between the water inlet and the water outlet, so that the water in the heating chamber must pass through the heating unit when flowing out, thereby improving the heating efficiency of the heating unit.

[0016] Preferably, the device further comprises a plurality of mounting slots disposed around the heating chamber, the mounting slots extending along the depth direction of the heating chamber. The mounting slots are used to adjust the installation position of the smart toilet water heating module, making the smart toilet water heating module adaptable to different models of smart toilets, thereby improving the practicality of the smart toilet water heating module.

[0017] Beneficial effects of the utility model:

[0018] The present invention provides a smart toilet water heating module with dual temperature control protection. The module is equipped with a first temperature control switch and a second temperature control switch with different disconnect temperatures. The disconnect temperature of the second temperature control switch is higher than that of the first temperature control switch, preventing the first temperature control switch from failing and causing excessive water temperature and scalding. This improves the safety of the smart toilet water heating module. Furthermore, the first and second temperature control switches are connected to the two ends of a heating unit, respectively, and are located on the neutral and live wires of the heating unit, respectively. This prevents the first and second temperature control switches from failing simultaneously when the neutral or live wires of the heating unit are forced to conduct, thereby improving the reliability of the first and second temperature control switches. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall schematic diagram of the intelligent toilet water heating module of the present utility model;

[0020] Figure 2 This is an explosion diagram of the intelligent toilet water heating module of the present utility model;

[0021] Figure 3 This is a schematic diagram of the housing of the intelligent toilet water heating module of the present utility model;

[0022] Figure 4 This is a schematic diagram of the heating unit of the intelligent toilet water heating module of the present utility model;

[0023] Figure 5This is a connection diagram of the intelligent toilet water heating module of the present utility model.

[0024] Reference numerals:

[0025] 1. Housing; 2. Heating unit; 3. Second temperature control switch; 4. First temperature control switch; 5. Sealing ring; 11. Heating chamber; 12. Water inlet hole; 13. Water outlet hole; 14. Sealing groove; 15. Mounting groove; 21. Heating tube; 22. Mounting plate; 31. Mounting part; 32. Pressing plate; 41. Temperature sensor; 211. Heating part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1-Figure 5 As shown, a smart toilet water heating module with dual temperature control protection includes a housing 1, a heating chamber 11 is provided in the housing 1, and a water inlet 12 and a water outlet 13 are provided on the side wall of the heating chamber 11, which are connected to the outside.

[0028] In this embodiment, the water inlet 12 is provided at the bottom of the side wall of the heating chamber 11, and the height of the water outlet 13 is higher than that of the water inlet 12. When the water outlet 13 is higher than the water inlet 12, it is possible to prevent cold water entering through the water inlet 12 from immediately flowing out through the water outlet 13, thereby increasing the residence time of the cold water in the heating chamber 11, allowing the cold water to be fully heated to the set temperature, and improving the reliability of the heating chamber 11.

[0029] It also includes a heating unit 2, which extends from the outside into the heating chamber 11; water is introduced into the heating chamber 11 through the water inlet 12, heated by the heating unit 2, and then discharged from the water outlet 13;

[0030] Specifically, the heating unit 2 includes a heating tube 21, which is mounted on a mounting plate 22. A heating portion 211 is provided between the two ends of the heating tube 21. The heating portion 211 is U-shaped or serpentine and extends into the heating chamber 11. The U-shaped or serpentine heating portion 211 increases the heating area of ​​the heating portion 211 within the heating chamber 11, thereby improving the heating efficiency of the heating unit 2.

[0031] Specifically, the mounting plate 22 is fixedly connected to the housing 1. A sealing groove 14 is provided on the side of the housing 1 fixedly connected to the mounting plate 22. A sealing ring 5 is provided in the sealing groove 14. The sealing ring 5 is used to improve the sealing performance of the heating chamber 11, prevent the heating chamber 11 from leaking, and improve the reliability.

[0032] Specifically, the water outlet 13 is arranged at the top of the side wall of the heating chamber 11, and the heating unit 2 is arranged between the water inlet 12 and the water outlet 13, so that the water in the heating chamber 11 must pass through the heating unit 2 when flowing out, thereby improving the heating efficiency of the heating unit 2.

[0033] The housing 1 is provided with a first temperature-controlled switch 4 and a second temperature-controlled switch 3, wherein the disconnection temperature of the first temperature-controlled switch 4 is lower than the disconnection temperature of the second temperature-controlled switch 3;

[0034] In this embodiment, the first temperature-controlled switch 4 is a self-resetting switch, and the second temperature-controlled switch 3 is a manual kick switch. The reset temperature of the first temperature-controlled switch 4 is lower than the disconnect temperature of the second temperature-controlled switch 3. A self-resetting switch is a temperature-controlled switch that automatically connects and disconnects a circuit based on the detected water temperature. When the water temperature is higher than a set upper temperature limit, the self-resetting switch automatically disconnects the circuit, causing the heating unit 2 to stop heating the heating chamber 11, preventing the water temperature from being too high. When the water temperature is lower than a set lower temperature limit, the self-resetting switch automatically connects the circuit, causing the heating unit 2 to heat the water in the heating chamber 11, preventing the water temperature in the heating chamber 11 from being too low. A manual kick switch is a temperature-controlled switch that automatically disconnects the circuit based on the detected water temperature. When the water temperature is higher than a set temperature limit, the kick switch automatically disconnects the circuit, causing the heating unit 2 to stop heating the water in the heating chamber 11, preventing the water temperature from being too high. The second temperature control switch 3 is used to prevent the water temperature from being too high when the first temperature control switch 4 fails. The disconnection temperature of the second temperature control switch 3 is greater than the disconnection temperature of the first temperature control switch 4. When the first temperature control switch 4 is working normally, the water temperature in the heating chamber 11 cannot reach the second temperature control switch 3. Only when the first temperature control switch 4 fails will the second temperature control switch 3 disconnect the circuit, thereby improving the safety of the water heating module; at the same time, since the sudden jump switch will not automatically recover after being disconnected and needs to be manually reset, it can remind the user that the first temperature control switch 4 has failed, thereby improving the convenience of subsequent maintenance.

[0035] The smart toilet water heater is connected to an external power supply unit, which includes at least a first power supply terminal and a second power supply terminal. The first power supply terminal is electrically connected to one end of the heating unit 2 through the first temperature-controlled switch 4, and the other end of the heating unit 2 is electrically connected to the second power supply terminal through the second temperature-controlled switch 3, so that a ring loop is formed between the external power supply unit, the first temperature-controlled switch 4, the heating unit 2, and the second temperature-controlled switch 3. The first temperature-controlled switch 4, the first temperature-controlled switch 4, and the second temperature-controlled switch 3 are respectively connected to the two ends of the heating unit 2, so that the first temperature-controlled switch 4 and the second temperature-controlled switch 3 are respectively arranged on the neutral wire and the live wire of the heating unit 2, preventing the first temperature-controlled switch 4 and the second temperature-controlled switch 3 from failing at the same time when the neutral wire or the live wire of the heating unit 2 is forced to conduct, thereby improving the reliability of the first temperature-controlled switch 4 and the second temperature-controlled switch 3.

[0036] In this embodiment, the external power supply unit is AC power.

[0037] Specifically, an opening is provided on one side of the housing 1, and the opening is communicated with the heating chamber 11; a mounting plate 22 is provided at the opening, and the mounting plate 22 is made of metal, and the first temperature-controlled switch 4 is provided on the mounting plate 22. The first temperature-controlled switch 4 detects the water temperature in the heating chamber 11 by sensing the temperature of the mounting plate 22. Since there will be an error when the water temperature of the heating chamber 11 is transmitted to the first temperature-controlled switch 4 through the mounting plate 22, it is necessary to calculate the error value and combine the error value with the set water temperature to obtain the set value of the first temperature-controlled switch 4. When the water temperature is higher than the upper limit of the set value, the self-resetting switch automatically disconnects the circuit, causing the heating unit 2 to stop heating the heating chamber 11, thereby preventing the water temperature from being too high; when the water temperature is lower than the lower limit of the set value, the self-resetting switch automatically connects the circuit, causing the heating unit 2 to heat the heating chamber 11, thereby preventing the water temperature in the heating chamber 11 from being too low.

[0038] Specifically, it also includes a temperature sensor 41 and a water level sensor;

[0039] The temperature sensor 41 passes through the side wall of the shell 1 from top to bottom and extends into the heating chamber 11, and is used to detect the water temperature in the heating chamber 11; one end of the water level sensor is connected to the mounting plate 22, and the other end is connected to the probe of the temperature sensor 41; when the water level in the heating chamber 11 rises to the probe of the temperature sensor 41, the mounting plate 22 and the probe of the temperature sensor 41 are connected, forming a closed loop. The water level sensor is used to detect whether the temperature sensor 41 is in contact with water, preventing the temperature sensor 41 from failing, improving the reliability of the temperature sensor 41, and thus improving the reliability of the first temperature control switch 4. At the same time, the water level sensor forms a loop through the mounting plate 22, eliminating the need for additional cables, thereby improving the convenience of the early assembly and later maintenance of the smart toilet water heating module.

[0040] Specifically, the temperature sensor 41 is disposed at the water outlet 13. Since the hot water heated in the heating chamber 11 flows out from the water outlet 13, when the first temperature control switch 4 is disposed at the water outlet 13, the water temperature of the hot water flowing out of the heating chamber 11 can be more accurately detected, thereby further improving the reliability of the first temperature control switch 4.

[0041] In this embodiment, a plurality of mounting grooves 15 are further provided around the heating chamber 11, and the mounting grooves 15 extend along the depth direction of the heating chamber 11. The mounting grooves 15 are used to adjust the installation position of the smart toilet water heating module, so that the smart water heating module can be adapted to different models of smart toilets, thereby improving the practicality of the smart toilet water heating module.

[0042] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation to the present invention.

Claims

1. A smart toilet water heating module with dual temperature control protection, comprising a housing, a heating chamber disposed within the housing, a water inlet and a water outlet disposed on the sidewalls of the heating chamber, and a heating unit extending from the outside into the heating chamber; water is introduced into the heating chamber through the water inlet, heated by the heating unit, and then discharged from the water outlet, characterized in that: The housing is provided with at least a first temperature-controlled switch and a second temperature-controlled switch; wherein the disconnection temperature of the first temperature-controlled switch is lower than the disconnection temperature of the second temperature-controlled switch; The smart toilet water heater is connected to an external power supply unit, which includes at least a first power supply terminal and a second power supply terminal; the first power supply terminal is electrically connected to one end of the heating unit through the first temperature control switch, and the other end of the heating unit is electrically connected to the second power supply terminal through the second temperature control switch, so that a ring loop is formed between the external power supply unit, the first temperature control switch, the heating unit, and the second temperature control switch.

2. The intelligent toilet water heating module with dual temperature control protection according to claim 1, characterized in that: The first temperature-controlled switch is a self-resetting switch, and the second temperature-controlled switch is a manual kick switch; the reset temperature of the first temperature-controlled switch is lower than the disconnection temperature of the second temperature-controlled switch.

3. The intelligent toilet water heating module with dual temperature control protection according to claim 2, characterized in that: An opening is provided on one side of the shell, and the opening is communicated with the heating chamber; a mounting plate is provided at the opening, and the mounting plate is made of metal, and the first temperature control switch is provided on the mounting plate.

4. The intelligent toilet water heating module with dual temperature control protection according to claim 3, characterized in that: The heating unit includes a heating tube, which is arranged on the mounting plate. A heating portion is provided between the two ends of the heating tube. The heating portion is U-shaped or serpentine and extends into the heating cavity.

5. The intelligent toilet water heating module with dual temperature control protection according to claim 4, characterized in that: The mounting plate is fixedly connected to the shell, and a sealing groove is provided on a side of the shell where the mounting plate is fixedly connected, and a sealing ring is provided in the sealing groove.

6. The intelligent toilet water heating module with dual temperature control protection according to claim 3, characterized in that: Also includes temperature sensors and water level sensors; The temperature sensor passes through the side wall of the shell from top to bottom and extends into the heating chamber to detect the water temperature in the heating chamber; one end of the water level sensor is connected to the mounting plate, and the other end is connected to the probe of the temperature sensor; when the water level in the heating chamber rises to the probe of the temperature sensor, the mounting plate and the probe of the temperature sensor are connected to form a closed loop.

7. The intelligent toilet water heating module with dual temperature control protection according to claim 6, characterized in that: The temperature sensor is arranged at the water outlet.

8. The intelligent toilet water heating module with dual temperature control protection according to claim 1, characterized in that: The water inlet is arranged at the bottom of the side wall of the heating chamber, and the height of the water outlet is higher than that of the water inlet.

9. The intelligent toilet water heating module with dual temperature control protection according to claim 8, characterized in that: The water outlet is arranged at the top of the side wall of the heating chamber, and the heating unit is arranged between the water inlet and the water outlet.

10. The intelligent toilet water heating module with dual temperature control protection according to claim 1, characterized in that: It also includes a plurality of mounting grooves arranged on the peripheral side of the heating cavity, and the mounting grooves extend along the depth direction of the heating cavity.

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