Zero-sense double shield temperature control technology, heater, intelligent toilet and base thereof

Abstract

The utility model discloses a zero sense double shield temperature control technology instant heater, intelligent closestool and base, zero sense double shield temperature control technology instant heater includes casing, partition, first heating sheet and second heating sheet. The utility model discloses a zero sense double shield temperature control technology instant heater passes to the multistage flow channel that adopts the partition and double heating sheet structure formation, makes water flow in turn flow through four independent flow channels, effectively prolongs the heating path and optimizes the heat transfer process to realize even heating, has solved the uneven problem of water flow heating, improved the outlet water temperature stability, avoided the advantage that the phenomenon of hot and cold alternation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of instant water heater technology, and in particular to an instant water heater with zero-sensory dual-shield temperature control technology, a smart toilet and its base. Background Technology

[0002] Instantaneous electric water heaters are widely used in modern life due to their advantages such as instant hot water, no preheating required, and compact size. Their core technology lies in how to quickly and efficiently heat flowing cold water to a set temperature. Current instantaneous water heaters typically use a single heating element to heat the water flow. Because the water flow is fast, the contact time between the water and the heating element is very short. This can result in the central part of the water flow not being fully heated, leading to uneven water temperature and a "sudden change in temperature," resulting in a poor user experience. Utility Model Content

[0003] The main purpose of this invention is to propose a zero-sensory dual-shield temperature control technology instant heater, aiming to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the zero-sensory dual-shield temperature control technology instant heater proposed in this utility model includes: A housing, the housing having an inlet and an outlet, the housing including a first sidewall and a second sidewall disposed opposite to each other; A partition plate is installed inside the housing and divides the inner cavity of the housing into an inlet channel and an outlet channel. The inlet is connected to the inlet channel and the outlet is connected to the outlet channel. One end of the partition plate is connected to the first side wall, and the other end is connected to the second side wall to form a flow gap, which connects the inlet channel and the outlet channel. A first heating element is installed in the water inlet channel, dividing the water inlet channel into a first channel and a second channel. One end of the first heating element is connected to the second side wall, and the other end forms a first flow gap with the first side wall. The first flow gap connects the first channel and the second channel, and the water inlet is connected to the first channel. The second heating element is installed in the water outlet channel and divides the water outlet channel into a third channel and a fourth channel. One end of the second heating element is connected to the second side wall, and the other end forms a second flow gap with the first side wall. The second flow gap connects the third channel and the fourth channel, and the water outlet is connected to the fourth channel. The water flowing into the inlet flows through the first flow channel, the second flow channel, the third flow channel and the fourth flow channel in sequence before flowing out of the outlet.

[0005] Optionally, the water inlet is located at the bottom of the shell, the water outlet is located at the top of the shell, and the first flow channel, the second flow channel, the third flow channel and the fourth flow channel are arranged from bottom to top.

[0006] Optionally, the zero-sensory dual-shield temperature control instant heater also includes a flow meter and a thermostat. The flow meter is installed outside the housing and connected to the water inlet to detect the water flow rate to the water inlet. The thermostat is electrically connected to the flow meter, the first heating element, and the second heating element, and is used to control the operating power of the first heating element and the second heating element according to the water flow rate to the water inlet.

[0007] Optionally, the zero-sensory dual-shield temperature control instant heater also includes a water temperature sensor, which is installed at the water outlet to detect the water temperature flowing through the outlet; the thermostat is electrically connected to the water temperature sensor to adjust the operating power of the first heating element and the second heating element according to the water temperature.

[0008] Optionally, the temperature controller is further configured to disconnect the power supply to the first heating element and the second heating element when the temperature monitored by the water temperature sensor reaches the maximum preset temperature; and to activate the first heating element and the second heating element when the temperature monitored by the water temperature sensor is close to the freezing point.

[0009] Optionally, the first heating element and the second heating element are ceramic heating elements.

[0010] Optionally, the housing further includes a third sidewall, which is perpendicular to the partition plate, the first heating element, and the second heating element. The third sidewall has a mounting hole that is connected to both the water inlet channel and the water outlet channel. The zero-sensory dual-shield temperature control instant heater also includes an elastic seal that seals the mounting hole. When the water inside the housing freezes and expands, the elastic seal undergoes elastic deformation under stress to disperse the compressive force on the first heating element and the second heating element.

[0011] Optionally, the thickness of the first flow channel, the second flow channel, the third flow channel and the fourth flow channel is set to 1.5 mm to 2.5 mm.

[0012] This utility model also proposes a smart toilet base, including a shell and a zero-sensory dual-shield temperature control instant heater as described above, wherein the zero-sensory dual-shield temperature control instant heater is installed inside the shell.

[0013] This utility model also proposes a smart toilet, including a toilet body and a smart toilet base as described above.

[0014] The zero-sensory dual-shield temperature control technology instant heater of this utility model forms a multi-stage flow channel by adopting a partition plate and a dual heating element structure, so that the water flows through four independent flow channels in sequence, effectively extending the heating path and optimizing the heat transfer process, thereby achieving uniform heating. It has the advantages of solving the problem of uneven water heating, improving the stability of the outlet water temperature, and avoiding the phenomenon of sudden temperature changes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the instant heater with zero-sensory dual-shield temperature control technology of this utility model; Figure 2 This is a cross-sectional view of the structure of the instant heater with zero-sensory dual-shield temperature control technology of this utility model; Figure 3 This is a structural cross-sectional view of another embodiment of the zero-sensory dual-shield temperature control technology instant heater of this utility model; Figure 4 This is a structural cross-sectional view of another embodiment of the zero-sensory dual-shield temperature control technology instant heater of this utility model.

[0017] Explanation of icon numbers: The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] 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.

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] This utility model proposes a zero-sensory dual-shield temperature control technology instant heater.

[0022] In the embodiments of this utility model, such as Figures 1 to 3 As shown, the zero-sensory dual-shield temperature control instant heater includes: a housing 10, which has an inlet 15 and an outlet 16, and includes a first sidewall and a second sidewall disposed opposite to each other; a partition plate 20, which is installed inside the housing 10 and divides the inner cavity of the housing 10 into an inlet channel and an outlet channel, wherein the inlet 15 is connected to the inlet channel and the outlet 16 is connected to the outlet channel, one end of the partition plate 20 is connected to the first sidewall, and the other end forms a flow gap with the second sidewall, the flow gap connecting the inlet channel and the outlet channel; A first heating element 31 is installed in the water inlet channel, dividing the water inlet channel into a first channel 11 and a second channel 12. One end of the first heating element 31 is connected to the second side wall, and the other end forms a first flow gap with the first side wall. The first flow gap connects the first channel 11 and the second channel 12. The water inlet 15 is connected to the first channel 11. A second heating element 32 is installed in the water outlet channel, dividing the water outlet channel into a third channel 13 and a fourth channel 14. One end of the second heating element 32 is connected to the second side wall, and the other end forms a second flow gap with the first side wall. The second flow gap connects the third channel 13 and the fourth channel 14. The water outlet 16 is connected to the fourth channel 14. The water flowing into the water inlet 15 flows sequentially through the first channel 11, the second channel 12, the third channel 13, and the fourth channel 14 before flowing out of the water outlet 16.

[0023] In this embodiment, the housing 10 serves as a basic support component and can be made of metal or engineering plastic through injection molding or stamping processes, such as an aluminum alloy housing 10 or a polypropylene housing 10. Its primary purpose is to provide a stable internal cavity space to accommodate the flow channel components. The partition plate 20 refers to a physical barrier used to separate the water flow path. It can be implemented using a fixed or removable partition plate, such as a stainless steel plate or a plastic plate. Its primary purpose is to effectively isolate the inlet and outlet flow channels. The flow gap refers to the channel reserved between the end of the partition plate 20 and the side wall, primarily to facilitate the connection and transfer of water flow between the inlet and outlet flow channels.

[0024] The first heating element 31 is an element used to heat the water flow in the inlet channel. It can be implemented using a resistance heating element or a thin-film heating element, such as a nickel-chromium alloy resistance element or a graphene heating film. Its main purpose is to provide heat energy to raise the water temperature. The first flow gap is a narrow channel formed between the end of the first heating element 31 and the first sidewall. Its main purpose is to guide the water flow from the first flow channel 11 to the second flow channel 12. The second heating element 32 is an element used to heat the water flow in the outlet channel. Its main purpose is to provide secondary heating to the water flow. The second flow gap is a channel formed between the end of the second heating element 32 and the first sidewall. Its main purpose is to ensure a smooth transfer of water flow between the third flow channel 13 and the fourth flow channel 14.

[0025] After entering through the inlet 15, the water flows sequentially through the first channel 11, the second channel 12, the third channel 13, and the fourth channel 14. This path design, through multi-level channel separation and dual heating element layout, extends the contact time between the water flow and the heating element and induces turbulence in the water flow, thereby effectively avoiding the problem of insufficient heating in the central area caused by excessive water flow speed in the prior art, and ultimately achieving uniform and stable outlet water temperature.

[0026] For example, such as Figure 1 and Figure 2 As shown, the inlet 15 is located at the bottom of the housing 10, the outlet 16 is located at the top of the housing 10, and the first flow channel 11, the second flow channel 12, the third flow channel 13 and the fourth flow channel 14 are arranged from bottom to top.

[0027] The inlet 15 is positioned at the lowest point of the housing 10, which can be achieved by an opening in the central or side area of ​​the bottom of the housing 10. This allows the water to enter from a low point and flow naturally upwards, facilitating uniform water distribution through gravity. The outlet 16 is positioned at the highest point of the housing 10, which can be achieved by an opening in the central or edge area of ​​the top of the housing 10. This allows the water to exit from a high point after the heating process is complete, ensuring the continuity of the water flow path and effective removal of air bubbles. In practical applications, the arrangement of the first flow channel 11, the second flow channel 12, the third flow channel 13, and the fourth flow channel 14 from bottom to top means that the four channels are arranged vertically in sequence. This can be achieved by parallel and equidistant arrangement, aiming to ensure that the water flows stably in a Z-shape from bottom to top under gravity, prolonging the contact time between the water and the heating element and avoiding velocity differences caused by gravity.

[0028] By placing the inlet 15 at the bottom of the housing 10 and the outlet 16 at the top of the housing 10, and arranging the flow channels from bottom to top, the water flows into the first flow channel 11 through the bottom inlet 15 and then flows upward with the aid of gravity, passing through the second flow channel 12, the third flow channel 13, and the fourth flow channel 14 in sequence, finally flowing out from the top outlet 16. This arrangement ensures that the water flow is evenly distributed across the entire flow channel cross-section, avoiding velocity differences caused by gravity in horizontal flow, allowing the central part of the water flow to fully contact the heating element, and also helping to expel air bubbles, reducing the impact of air bubble retention on heating efficiency, thereby effectively solving the problem of uneven outlet water temperature.

[0029] For example, the thickness of the first flow channel 11, the second flow channel 12, the third flow channel 13, and the fourth flow channel 14 is set to 1.5 mm to 2.5 mm, such as 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, or 2.4 mm. The flow channel thickness refers to the cross-sectional width of the flow channel, which is also the physical dimension of the cross-section when water flows within the channel. By limiting the thickness of the first flow channel 11, the second flow channel 12, the third flow channel 13, and the fourth flow channel 14 to the range of 1.5 mm to 2.5 mm, a uniform thin water film is formed when the water flows through each channel, thereby significantly shortening the heat transfer path and ensuring a consistent overall temperature distribution of the water flow. Simultaneously, this thickness range effectively balances heat exchange efficiency and fluid dynamics characteristics, avoiding increased pressure drop and impurity deposition due to excessively narrow channels, and maintaining a stable water flow rate and temperature output.

[0030] For example, such as Figure 3As shown, the zero-sensory dual-shield temperature control technology instant heater also includes a flow meter 40 and a thermostat 50. The flow meter 40 is installed outside the housing 10 and connected to the water inlet 15 to detect the water flow rate to the water inlet 15. The thermostat 50 is electrically connected to the flow meter 40, the first heating element 31 and the second heating element 32. The thermostat 50 is used to control the operating power of the first heating element 31 and the second heating element 32 according to the water flow rate to the water inlet 15.

[0031] Flow meter 40 refers to a sensing device used to measure fluid flow rate in real time, which can be implemented using an electromagnetic or ultrasonic flow meter 40. Temperature controller 50 can be understood as an electronic control unit that executes power regulation logic, which can be implemented using a programmable microcontroller or digital signal processor, with the purpose of dynamically matching heating power according to water flow rate to maintain heat exchange efficiency.

[0032] The flow meter 40 is configured to continuously monitor changes in the water flow rate into the inlet 15 and transmit the real-time data to the thermostat 50. The thermostat 50 analyzes the water flow information based on a preset algorithm and dynamically adjusts the power by regulating the current intensity of the first heating element 31 and the second heating element 32. When the water flow rate increases, the power of the heating elements is increased to meet the heating demand of a larger volume of water and prevent a sudden drop in temperature. When the water flow rate decreases, the power is reduced to avoid overheating caused by excess energy, thereby ensuring that the water obtains uniform and stable heat exchange as it flows through the first flow channel 11, the second flow channel 12, the third flow channel 13, and the fourth flow channel 14 in sequence.

[0033] For example, such as Figure 1 As shown, the zero-sensory dual-shield temperature control technology instant heater also includes a water temperature sensor 60, which is installed at the water outlet 16 to detect the water temperature flowing through the water outlet 16; the thermostat 50 is electrically connected to the water temperature sensor 60 to adjust the operating power of the first heating element 31 and the second heating element 32 according to the water temperature.

[0034] The water temperature sensor 60 is a detection element used to acquire water temperature parameters in real time. It can be implemented using a thermocouple, thermistor, or infrared temperature measurement module, with the aim of directly acquiring the actual temperature state at the user's end. The feature of installing the water temperature sensor 60 at the outlet 16 can be understood as setting the detection point at the final water outlet location, aiming to avoid measurement deviations caused by heat loss along the heating path or uneven flow distribution. The electrical connection between the thermostat 50 and the water temperature sensor 60 establishes a reliable signal transmission channel, which can be implemented using analog voltage signal transmission or a digital communication interface, aiming to ensure that temperature data is transmitted to the control unit in real time. The feature of adjusting the operating power of the first heating element 31 and the second heating element 32 according to the outlet water temperature refers to dynamically adjusting the heating intensity based on temperature feedback.

[0035] Water temperature sensor 60 collects real-time water flow temperature data at outlet 16 and transmits this data to thermostat 50 via electrical connection. The thermostat 50 dynamically adjusts the power output of the first heating element 31 and the second heating element 32 based on the deviation between the actual outlet water temperature and the target set value, forming a closed-loop control mechanism. This mechanism works in conjunction with the dual-channel heating system in the pre-heating structure: as water flows sequentially through the first channel 11, second channel 12, third channel 13, and fourth channel 14, the thermostat 50 precisely adjusts the heating intensity of the first heating element 31 on the inlet channel and the second heating element 32 on the outlet channel based on real-time temperature feedback at outlet 16, thereby compensating for the effects of sudden changes in inlet water temperature or fluctuations in water flow velocity. Since the outlet 16 directly reflects the final output temperature, this feedback path avoids the lag of relying solely on inlet flow rate prediction, enabling the two heating elements to work together to maintain thermal energy balance in the complete heating path, ensuring that temperature fluctuations are corrected in real time.

[0036] The above solution enables real-time monitoring of the outlet water temperature and dynamic adjustment of the heating power of the dual heating elements, effectively eliminating temperature fluctuations caused by changes in inlet water temperature and water flow rate, ensuring users receive stable and constant hot water output, avoiding sudden changes in temperature, and improving the reliability of the instant water heater.

[0037] For example, the temperature controller 50 is also used to disconnect the power supply of the first heating element 31 and the second heating element 32 when the monitored temperature of the water temperature sensor 60 reaches the maximum preset temperature; and to activate the first heating element 31 and the second heating element 32 when the monitored temperature of the water temperature sensor 60 is close to the freezing point.

[0038] The power disconnect function means that when the water temperature sensor 60 detects that the temperature exceeds the maximum preset threshold, the thermostat 50 immediately cuts off the power supply circuit of the first heating element 31 and the second heating element 32. This can be achieved using an electromagnetic relay or a solid-state switch, with the aim of quickly blocking the heat source and preventing temperature runaway from causing safety accidents. When the water temperature sensor 60 detects that the temperature is close to the freezing point, the thermostat 50 automatically activates the first heating element 31 and the second heating element 32 to start working. This can be achieved based on the temperature threshold judgment logic of the microcontroller, with the aim of preventing mechanical damage caused by the expansion of water when it freezes.

[0039] The thermostat 50 continuously receives real-time temperature signals from the water temperature sensor 60. When the monitored temperature reaches the maximum preset temperature, it immediately disconnects the power supply to the first heating element 31 and the second heating element 32, thereby completely cutting off the heat source and avoiding the risk of temperature runaway. When the monitored temperature approaches the freezing point (e.g., below or equal to 3 degrees Celsius), it promptly activates the first heating element 31 and the second heating element 32 for heating, utilizing early warning of the temperature critical point to actively activate the heat source before the water completely freezes. This dual mechanism, through precise triggering of sensor data, forms a closed-loop protection for extreme temperature conditions, not only compensating for the shortcomings of simple power regulation in safety protection but also ensuring stable operation of the equipment in high and low temperature environments.

[0040] The above solution effectively prevents burns and equipment overheating damage caused by continuous operation of the heat source at high temperatures, while avoiding damage to the internal structure caused by water freezing and expansion at low temperatures, thus significantly improving the safety and operational reliability of the instant heater under extreme temperature conditions.

[0041] For example, the first heating element 31 and the second heating element 32 are ceramic heating elements. A ceramic heating element is an electrothermal conversion element primarily composed of ceramic materials, such as alumina ceramic, silicon nitride ceramic, or silicon carbide ceramic. Compared to metal heating elements, ceramic heating elements are less prone to oxidation, rust, scale buildup, and electrical leakage due to bending.

[0042] For example, such as Figure 4 As shown, the housing 10 also includes a third sidewall, which is perpendicular to the partition plate 20, the first heating element 31, and the second heating element 32. The third sidewall has a mounting hole, which is connected to the water inlet channel and the water outlet channel. The zero-sensory dual-shield temperature control instant heater also includes an elastic seal 70 that seals the mounting hole. When the water inside the housing 10 freezes and expands, the elastic seal 70 undergoes elastic deformation under force to disperse the compressive force on the first heating element 31 and the second heating element 32.

[0043] The third sidewall refers to a sidewall structure of the housing 10, whose purpose is to provide structural support for the pressure relief mechanism. The mounting hole refers to an opening formed on the third sidewall, which can be a through hole made by machining or injection molding, and its purpose is to establish a pressure communication channel between the inlet and outlet water channels. The elastic seal 70 refers to a sealing element with reversible deformation capability, which can be a plug-like structure made of thermoplastic elastomer or synthetic rubber material, such as a silicone cap, and its purpose is to absorb expansion energy through the elastic response of the material to avoid rigid impact.

[0044] The strict perpendicular relationship between the third sidewall and the partition plate 20, the first heating element 31, and the second heating element 32 ensures that the mounting hole is precisely positioned on the pressure transmission path. The mounting hole connects both the inlet and outlet water channels, allowing the pressure generated by ice expansion to be evenly transmitted across the channels, preventing local pressure accumulation. The elastic seal 70 maintains a sealed state to prevent leakage under normal operating conditions. When water freezes and expands, it undergoes elastic deformation, diffusing the pressure originally concentrated on the heating element to a larger area of ​​the housing 10, thereby significantly reducing the local stress intensity of the heating element.

[0045] The above solution effectively disperses the compressive force generated when water freezes and expands, preventing the first heating element 31 and the second heating element 32 from brittle fracture due to stress concentration, thus ensuring the structural integrity and long-term operational reliability of the equipment in extreme low-temperature environments.

[0046] For example, the Zero Sensing Dual Shield Temperature Control Technology instant heater also includes a high-temperature fuse, which is a one-time mechanical protection device composed of a special alloy solder joint. When the temperature around it rises abnormally to an extremely dangerous critical point, the alloy solder joint will automatically melt and break. Once melted, the circuit is permanently cut off, and the entire heating system is completely powered off and can no longer operate.

[0047] This utility model also proposes a smart toilet base, which includes a shell and a zero-sensory dual-shield temperature control instant heater. The specific structure of the zero-sensory dual-shield temperature control instant heater is as described in the above embodiments. Since this smart toilet base adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The zero-sensory dual-shield temperature control instant heater is installed inside the shell.

[0048] This utility model also proposes a smart toilet, which includes a toilet body and a smart toilet base. The specific structure of the smart toilet base is as described in the above embodiments. Since this smart toilet adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0049] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A zero-sensory dual-shield temperature control technology instant heater, characterized in that, include: A housing, the housing having an inlet and an outlet, the housing including a first sidewall and a second sidewall disposed opposite to each other; A partition plate is installed inside the housing and divides the inner cavity of the housing into an inlet channel and an outlet channel. The inlet is connected to the inlet channel and the outlet is connected to the outlet channel. One end of the partition plate is connected to the first side wall, and the other end is connected to the second side wall to form a flow gap, which connects the inlet channel and the outlet channel. A first heating element is installed in the water inlet channel, dividing the water inlet channel into a first channel and a second channel. One end of the first heating element is connected to the second side wall, and the other end forms a first flow gap with the first side wall. The first flow gap connects the first channel and the second channel, and the water inlet is connected to the first channel. The second heating element is installed in the water outlet channel and divides the water outlet channel into a third channel and a fourth channel. One end of the second heating element is connected to the second side wall, and the other end forms a second flow gap with the first side wall. The second flow gap connects the third channel and the fourth channel, and the water outlet is connected to the fourth channel. The water flowing into the inlet flows through the first flow channel, the second flow channel, the third flow channel and the fourth flow channel in sequence before flowing out of the outlet.

2. The instant heater with zero-sensory dual-shield temperature control technology as described in claim 1, characterized in that, The inlet is located at the bottom of the shell, and the outlet is located at the top of the shell. The first flow channel, the second flow channel, the third flow channel, and the fourth flow channel are arranged from bottom to top.

3. The instant heater with zero-sensory dual-shield temperature control technology as described in claim 1, characterized in that, The zero-sensory dual-shield temperature control technology instant heater also includes a flow meter and a temperature controller. The flow meter is installed outside the housing and connected to the water inlet to detect the water flow rate to the water inlet. The temperature controller is electrically connected to the flow meter, the first heating element, and the second heating element. The temperature controller is used to control the operating power of the first heating element and the second heating element according to the water flow rate to the water inlet.

4. The instant heater with zero-sensory dual-shield temperature control technology as described in claim 3, characterized in that, The zero-sensory dual-shield temperature control technology instant heater also includes a water temperature sensor, which is installed at the water outlet to detect the water temperature flowing through the outlet; the thermostat is electrically connected to the water temperature sensor to adjust the operating power of the first heating element and the second heating element according to the water temperature.

5. The instant heater with zero-sensory dual-shield temperature control technology as described in claim 4, characterized in that, The temperature controller is also used to disconnect the power supply to the first heating element and the second heating element when the temperature monitored by the water temperature sensor reaches the maximum preset temperature; and to activate the first heating element and the second heating element when the temperature monitored by the water temperature sensor is close to the freezing point.

6. The instant heater with zero-sensory dual-shield temperature control technology as described in claim 1, characterized in that, The first heating element and the second heating element are ceramic heating elements.

7. The instant heater with zero-sensory dual-shield temperature control technology as described in claim 6, characterized in that, The housing also includes a third sidewall, which is perpendicular to the partition plate, the first heating element, and the second heating element. The third sidewall has a mounting hole that is connected to both the water inlet channel and the water outlet channel. The zero-sensory dual-shield temperature control instant heater also includes an elastic seal that seals the mounting hole. When the water inside the housing freezes and expands, the elastic seal undergoes elastic deformation under stress to disperse the compressive force on the first heating element and the second heating element.

8. The instant heater with zero-sensory dual-shield temperature control technology as described in claim 1, characterized in that, The thickness of the first flow channel, the second flow channel, the third flow channel and the fourth flow channel is set to 1.5 mm to 2.5 mm.

9. A smart toilet base, characterized in that, It includes a housing and a zero-sensory dual-shield temperature control instant heater as described in any one of claims 1 to 8, wherein the zero-sensory dual-shield temperature control instant heater is installed inside the housing.

10. A smart toilet, characterized in that, It includes the toilet body and the smart toilet base as described in claim 9.

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