Water pipe structure of instant heating faucet

Abstract

The utility model discloses a water pipe structure of instant heating faucet, including from below to above including electric proportional valve, water inlet subassembly, pipeline subassembly, heating assembly and water outlet subassembly in proper order, water inlet subassembly includes hot water inlet pipe and cold water inlet pipe, and pipeline subassembly is equipped with hot water flow channel and mixed water flow channel, and the input end of hot water flow channel is linked together with hot water inlet pipe, and the input end of mixed water flow channel is linked together with cold water inlet pipe, and the output end of hot water flow channel is linked together with the input end of mixed water flow channel, and the output end of mixed water flow channel is linked together with water outlet subassembly, hot water flow channel ring is equipped in the outside of mixed water flow channel, and the heating end of heating assembly is connected with mixed water flow channel. Hot water flow channel can insulate low temperature environment of outside, avoid the mixed water in mixed water flow channel to heat to outside, thereby reduce the energy consumption of heating assembly, avoid the large amount of heat in heating pipeline to lose and spread to cold water pipeline and outside when the traditional instant heating faucet heats, lead to the problem of the energy consumption of heating assembly.

Description

Technical Field

[0001] This utility model relates to the field of faucet technology, specifically a water pipe structure for an instant hot water faucet. Background Technology

[0002] In scenarios where there is a demand for instant hot water, such as home kitchens and bathrooms and small restaurants, the core idea of ​​traditional instant hot water faucets is to place a cold water pipe around the outer wall of the heating pipe and use the residual heat of the hot water in the heating pipe to preheat the cold water. Theoretically, this can reduce the working pressure of the subsequent heating components.

[0003] However, the heating pipes carry heated hot water, while the cold water pipes carry room-temperature tap water, creating a significant temperature difference. This temperature difference leads to uncontrollable heat transfer, causing heat in the heating pipes to diffuse to the outer cold water pipes at a faster rate and on a larger scale. Some heat is even further lost through the outer wall of the cold water pipes into the faucet's internal cavity and the external environment, resulting in a double heat loss problem.

[0004] To ensure the final outlet water temperature meets user requirements, the heating components must continuously operate at high power: on the one hand, they must constantly compensate for the large amount of heat lost from the heating pipes to the cold water pipes and the outside environment, preventing the water temperature inside the heating pipes from dropping rapidly; on the other hand, they must continue to heat the mixed water to reach the target temperature, building upon the preheating of the cold water. This long-term high-load operation results in serious energy waste and fails to meet the core requirements of energy saving and durability in current scenarios. Utility Model Content

[0005] To address the aforementioned shortcomings, this invention proposes a water pipe structure for an instant hot water faucet. The hot water flow channel is positioned around the outside of the mixing water flow channel, allowing the hot water within the hot water flow channel to flow outside the mixing water flow channel. This enables the mixing water flow channel to more quickly remove heat from the heated water flow channel from multiple directions, transferring heat from the hot water to the mixing water flow channel, where the heating element directly acts. Furthermore, the hot water flow channel located outside the mixing water flow channel insulates against the low-temperature external environment, preventing the mixed water within the mixing water flow channel from dissipating heat to the outside. This reduces the energy consumption of the heating element and avoids the problem of high energy consumption in traditional instant hot water faucets, where a large amount of heat in the heating pipe continuously dissipates into the cold water pipe and to the outside environment.

[0006] To achieve this objective, the present invention adopts the following technical solution: A water pipe structure for an instant hot water faucet includes, from bottom to top, an electric proportional valve, an inlet assembly, a pipe assembly, a heating assembly, and an outlet assembly; The water inlet assembly includes a hot water inlet pipe and a cold water inlet pipe. The pipe assembly is provided with a hot water flow channel and a mixing water flow channel. The input end of the hot water flow channel is connected to the hot water inlet pipe, the input end of the mixing water flow channel is connected to the cold water inlet pipe, the output end of the hot water flow channel is connected to the input end of the mixing water flow channel, and the output end of the mixing water flow channel is connected to the water outlet assembly. The hot water flow channel is arranged around the outside of the mixing water flow channel. The heating end of the heating component is connected to the mixing water flow channel. The heating component is used to heat the mixing water flow channel. The electric proportional valve is used to adjust the water inlet volume of the hot water inlet pipe and the cold water inlet pipe, and to control the total flow rate.

[0007] The pipeline assembly includes a mixing water pipeline, a first insulated pipeline, and a second insulated pipeline. The mixing water pipeline, the first insulated pipeline, and the second insulated pipeline are respectively arranged vertically and in a triangular arrangement. The hot water inlet pipe is connected to the bottom of the first insulated pipe, the top of the first insulated pipe is connected to the top of the second insulated pipe, and the bottom of the second insulated pipe is connected to the bottom of the mixing water pipe, forming the hot water flow channel. The cold water inlet pipe is connected to the bottom of the second insulated pipe, and the top of the mixing water pipe is connected to the water outlet assembly to form the mixing water channel.

[0008] The water inlet assembly further includes a first connector, the bottom of which is provided with a vertical first water inlet end and a second water inlet end, and the top of which is provided with a vertical first water outlet end, a second water outlet end and a first water return end. The first water inlet is connected to the cold water inlet pipe, the first water inlet is connected to the first water outlet, and the first water outlet is connected to the mixing water pipe, forming a cold water inlet channel. The second water inlet is connected to the hot water inlet pipe, the second water inlet is connected to the second water outlet, and the second water outlet is connected to the first insulated pipe, forming a hot water inlet pipe; The first return water end is connected to the bottom of the second insulation pipe, and the bottom of the first return water end is connected to the first outlet water end, forming a first connection channel.

[0009] The water outlet assembly includes a second connector, a water outlet pipe, and a water vapor separator. The top of the second connector is provided with a third water outlet; the bottom of the second connector is provided with a third water inlet, a fourth water inlet, and a second water return. The third water inlet is connected to the mixed water pipe, the third water inlet is connected to the third water outlet, and the third water outlet is connected to the water outlet assembly, forming a mixed water outlet channel; The fourth water inlet pipe is connected to the first insulation pipe, and the top of the fourth water inlet end is connected to the top of the second return water end to form a second connecting channel. The second return water end is connected to the second insulation pipe.

[0010] It also includes a metal sleeve, which comprises a mixing water cavity, a first hot water cavity, and a second hot water cavity that are interconnected. The first hot water cavity is used to wrap the first insulated pipe, the second hot water cavity is used to wrap the second insulated pipe, the mixed water cavity is used to wrap the mixed water pipe, the metal sleeve has a heating through hole on the side wall of the mixed water cavity, and the heating end of the heating component passes through the heating through hole and is connected to the mixed water pipe.

[0011] Both the hot water inlet pipe and the cold water inlet pipe are equipped with one-way valves at their input ends.

[0012] The heating assembly includes a heating tube and a circuit board. The circuit board is disposed on the outside of the metal sleeve, and the heating tube is arranged around the mixing water pipe. The heating tube is electrically connected to the circuit board. The circuit board is electrically connected to the electric proportional valve.

[0013] The first connector is equipped with an inlet water temperature sensor, which is horizontally positioned within the hot water connection channel; The water outlet pipe is equipped with a water outlet temperature detection device; The inlet water temperature sensor and the outlet water temperature sensor are electrically connected to the circuit board, respectively.

[0014] The technical solution of this utility model can include the following beneficial effects: 1. The hot water flow channel is positioned around the outside of the mixing water flow channel, allowing the hot water within the hot water flow channel to flow outside the mixing water flow channel. This enables the mixing water flow channel to more quickly remove heat from the heating water flow channel from multiple directions, transferring heat from the hot water to the mixing water flow channel, which is then directly heated by the heating element. Furthermore, the hot water flow channel located outside the mixing water flow channel insulates against the low-temperature external environment, preventing the mixed water within the mixing water flow channel from radiating heat to the outside. This reduces the energy consumption of the heating element and avoids the problem of high energy consumption associated with traditional instant hot water faucets, where a large amount of heat in the heating pipes continuously dissipates into the cold water pipes and to the outside environment.

[0015] 2. Cold water and hot water meet at the inlet of the mixing channel in advance, which allows the two water flows to fully mix before entering the heating zone, avoiding uneven heating caused by water stratification. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a water pipe structure according to one embodiment of the present invention; Figure 2 This is a cross-sectional view of the water inlet assembly and the pipe assembly according to one embodiment of this utility model; Figure 3 This is a cross-sectional view of the first connector in one embodiment of this utility model; Figure 4 This is a cross-sectional view of the second connector in one embodiment of this utility model; Figure 5 This is a schematic diagram of a metal sleeve according to one embodiment of the present invention; The components include: 1. Water inlet assembly; 11. Hot water inlet pipe; 12. Cold water inlet pipe; 13. First connector; 131. First water inlet end; 132. Second water inlet end; 133. First water outlet end; 134. Second water outlet end; 135. First return water end; 136. First connecting channel; 2. Pipe assembly; 21. Mixing water pipe; 22. First insulation pipe; 23. Second insulation pipe; 31. Circuit board; 4. Water outlet assembly; 41. Second connector; 411. Third water outlet end; 412. Third water inlet end; 413. Fourth water inlet end; 414. Second return water end; 415. Second connecting channel; 42. Water outlet pipe; 43. Water vapor separator; 5. Metal sleeve; 51. Mixing water cavity; 52. First hot water cavity; 53. Second hot water cavity; 54. Heating through hole; 6. Water inlet temperature detector; 61. Water outlet temperature detector. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The following is combined with Figures 1 to 5 This describes the water pipe structure of an instant hot water faucet according to an embodiment of the present invention.

[0022] A water pipe structure for an instant hot water faucet includes, from bottom to top, an electric proportional valve, an inlet water assembly 1, a pipe assembly 2, a heating assembly, and an outlet water assembly 4; The water inlet assembly 1 includes a hot water inlet pipe 11 and a cold water inlet pipe 12. The pipe assembly 2 is provided with a hot water flow channel and a mixing water flow channel. The input end of the hot water flow channel is connected to the hot water inlet pipe 11, the input end of the mixing water flow channel is connected to the cold water inlet pipe 12, the output end of the hot water flow channel is connected to the input end of the mixing water flow channel, and the output end of the mixing water flow channel is connected to the water outlet assembly 4. The hot water flow channel is arranged around the outside of the mixed water flow channel. The heating end of the heating component is connected to the mixed water flow channel. The heating component is used to heat the mixed water flow channel. The electric proportional valve is used to adjust the water inlet volume of the hot water inlet pipe 11 and the cold water inlet pipe 12 and control the total flow rate.

[0023] The inlet of hot water pipe 11 is connected to an external heat tank, which transports hot water from the external heat tank into the hot water channel. The inlet of cold water pipe 12 is connected to an external tap water pipe, which transports tap water from the external water supply into the mixing channel.

[0024] The hot water flow channel is positioned around the outside of the mixing water flow channel, allowing the hot water inside the hot water flow channel to flow outside the mixing water flow channel. This allows the mixing water flow channel to more quickly remove heat from the heating water flow channel from multiple directions, ensuring that the heat from the hot water is transferred to the mixing water flow channel, which is then directly heated by the heating element. Furthermore, the hot water flow channel located outside the mixing water flow channel insulates against the low-temperature external environment, preventing the mixed water inside the mixing water flow channel from radiating heat to the outside. This reduces the energy consumption of the heating element and avoids the problem of high energy consumption associated with traditional instant hot water faucets, where a large amount of heat in the heating pipes continuously dissipates into the cold water pipes and to the outside environment.

[0025] The hot water channel's output end is connected to the mixing water channel's input end, allowing tap water and hot water to mix in the mixing water channel before the heating element precisely heats the mixed water. This "mix first, then heat" mode can be flexibly adjusted according to user needs: if warm water is required, it can be achieved directly through hot and cold mixing without the heating element operating at full capacity; if hot water is required, it can be rapidly heated by the heating element after initial mixing, avoiding the waiting time required for heating pure cold water.

[0026] Moreover, the cold and hot water meet at the inlet of the mixing channel in advance, which allows the two water flows to fully blend before entering the heating zone, avoiding uneven heating caused by water stratification.

[0027] The electric proportional valve can independently control the water flow of the hot water inlet pipe 11 and the cold water inlet pipe 12. Combined with the dynamic adjustment of the heating element, it can effectively avoid sudden changes in water temperature caused by water pressure fluctuations and maintain a stable outlet water temperature. In addition, the mixing water channel is directly connected to the outlet component 4, which shortens the path of hot water from heating to flow, allowing for quick hot water output without long waiting times and improving ease of use.

[0028] The pipe assembly 2 includes a mixing water pipe 21, a first insulated pipe 22, and a second insulated pipe 23. The mixing water pipe 21, the first insulated pipe 22, and the second insulated pipe 23 are respectively arranged vertically and in a triangular arrangement. The hot water inlet pipe 11 is connected to the bottom of the first insulated pipe 22, the top of the first insulated pipe 22 is connected to the top of the second insulated pipe 23, and the bottom of the second insulated pipe 23 is connected to the bottom of the mixing water pipe 21, forming the hot water flow channel. The cold water inlet pipe 12 is connected to the bottom of the second insulation pipe 23, and the top of the mixing water pipe 21 is connected to the water outlet component 4 to form the mixing water flow channel.

[0029] The first insulated pipe 22, the second insulated pipe 23 and the mixing water pipe 21 are arranged in a triangular pattern, which makes the overall structure of the pipe assembly 2 more stable and improves the overall durability of the structure.

[0030] The top of the first insulated pipe 22 is directly connected to the top of the second insulated pipe 23, so that the hot water flow channel forms a meandering path of "bottom water inlet → upward flow → top turn → downward flow", which prolongs the contact stroke between the hot water and the mixing water pipe 21, and allows the residual heat energy of the hot water flow channel to be evenly transferred to the mixing water pipe 21, reducing the heating time and energy consumption.

[0031] The bottom of the second insulation pipe 23 is directly connected to the bottom of the mixing water pipe 21, allowing hot and cold water to undergo preliminary pre-mixing at the bottom of the mixing water pipe 21. This avoids localized low temperatures caused by cold water directly entering the heating area. The pre-mixed water has a more uniform temperature, which not only significantly reduces the instantaneous heating load on the heating element but also extends its service life.

[0032] The water inlet assembly 1 also includes a first connector 13, the bottom of which is provided with a vertical first water inlet end 131 and a second water inlet end 132, and the top of which is provided with a vertical first water outlet end 133, a second water outlet end 134 and a first water return end 135. The first water inlet 131 is connected to the cold water inlet pipe 12, the first water inlet 131 is connected to the first water outlet 133, and the first water outlet 133 is connected to the mixing water pipe 21, forming a cold water inlet channel. The second water inlet 132 is connected to the hot water inlet pipe 11, the second water inlet 132 is connected to the second water outlet 134, and the second water outlet 134 is connected to the first heat preservation pipe 22, forming a hot water inlet pipe; The first return water end 135 is connected to the bottom of the second insulation pipe 23, and the bottom of the first return water end 135 is connected to the first outlet water end 133, forming a first connection channel 136.

[0033] The first connector 13 integrates the inlet and outlet of cold and hot water, as well as the first return water end 135, into a single component, eliminating the need for multiple independent joints or pipe connections. This design significantly reduces the total number of components in the pipe assembly 2, simplifying the overall assembly process. Simultaneously, it reduces the number of interfaces at pipe connections, mitigating the risk of leakage due to interface seal failure and improving the water system's sealing performance.

[0034] Tap water enters the mixing pipe 21 sequentially from the first inlet 131 and the first outlet 133; hot water enters the first insulated pipe 22 sequentially from the second inlet 132 and the second outlet 134. The inlets of hot and cold water are separated by the first connector 13, preventing cross-flow and mixing of hot and cold water within the first connector 13.

[0035] The first connecting channel 136, formed by connecting the first return water end 135 and the first outlet water end 133, can play a role in pressure balancing and backflow buffering. When the cold water inlet pressure suddenly increases, the excess cold water can flow back to the first return water end 135 through the first connecting channel 136 to avoid a sudden increase in pressure in the mixing water pipe 21; conversely, if the cold water pressure is insufficient, the flow can also be supplemented through this channel to reduce problems such as fluctuating water output and unstable water temperature caused by pressure fluctuations, and to ensure the stability of system operation.

[0036] The water outlet assembly 4 includes a second connector 41, a water outlet pipe 42, and a water vapor separator 43; The second connector 41 is provided with a third water outlet 411 at its top; the second connector 41 is provided with a third water inlet 412, a fourth water inlet 413, and a second water return 414 at its bottom. The third water inlet 412 is connected to the mixed water pipe 21, the third water inlet 412 is connected to the third water outlet 411, and the third water outlet 411 is connected to the water outlet assembly 4, forming a mixed water outlet channel. The fourth water inlet pipe is connected to the first insulation pipe 22, the top of the fourth water inlet end 413 is connected to the top of the second return end 414 to form a second connecting channel 415, and the second return end 414 is connected to the second insulation pipe 23.

[0037] The second connector 41 integrates the interfaces for the mixed water inlet, hot water circulation inlet, hot water return circulation, and mixed water outlet into a single component, eliminating the need for multiple additional adapters. This integrated design not only simplifies the assembly process of the outlet component 4 and the pipe component 2 but also significantly reduces the number of water interfaces, structurally lowering the risk of leakage caused by interface sealing failure.

[0038] The second connector 41 has a separate channel for the mixed water: "mixed water pipe 21 → third inlet 412 → third outlet 411 → outlet assembly 4", which is completely separated from the hot water circulation channel (fourth inlet 413 → second return end 414 → second insulation pipe 23). This independent water circuit design can avoid cross-flow interference between the circulating hot water and the mixed water to be discharged, ensuring that the mixed water is stably delivered to the outlet at the preset temperature and preventing unexpected fluctuations in water temperature.

[0039] The second connecting channel 415 can serve as a pressure buffer path. When the hot water pressure in the first insulated pipe 22 rises briefly, the excess pressure can be transmitted to the second insulated pipe 23 through this channel, thus preventing excessive local pressure from damaging the pipe or interface.

[0040] It also includes a metal sleeve 5, which includes a mixing water cavity 51, a first hot water cavity 52 and a second hot water cavity 53 that are interconnected. The first hot water cavity 52 is used to wrap the first heat-insulating pipe 22, the second hot water cavity 53 is used to wrap the second heat-insulating pipe 23, the mixing water cavity 51 is used to wrap the mixing water pipe 21, the metal sleeve 5 has a heating through hole 54 on the side wall of the mixing water cavity 51, and the heating end of the heating component passes through the heating through hole 54 and is connected to the mixing water pipe 21.

[0041] The mixing water cavity 51, the first hot water cavity 52, and the second hot water cavity 53 of the metal sleeve 5 precisely wrap the mixing water pipe 21, the first insulation pipe 22, and the second insulation pipe 23, respectively, which can integrate the three originally independent pipes into a whole, further consolidate the structural stability of the triangular arrangement of pipes, and ensure that the pipe connection position remains unchanged during long-term use.

[0042] The cavity-encasing structure keeps the pipes in a relatively closed thermal environment, avoiding the direct impact of low external temperatures on the water inside the pipes. It also reduces the heat loss of the hot water flow channel and the mixing water flow channel, allowing the hot water to maintain a stable temperature during mixing, and the mixed water to maintain a basic temperature before heating, thus improving the overall heat utilization efficiency.

[0043] The heating through hole 54 in the metal sleeve 5 provides precise positioning for the installation of the heating component, ensuring that the heating end can be connected vertically and stably to the mixing water pipe 21, avoiding poor contact between the heating end and the pipe due to installation deviation, and thus preventing uneven heating.

[0044] Both the hot water inlet pipe 11 and the cold water inlet pipe 12 are equipped with one-way valves at their input ends.

[0045] A one-way valve allows water to flow only in the direction of "inlet to inside the pipe," completely blocking the possibility of backflow between hot and cold water. For example, when the water pressure in the cold water pipe suddenly drops, it prevents water in the hot water pipe from flowing back into the cold water pipe outside; conversely, it also prevents cold water from flowing back into the hot water pipe outside. This one-way flow design prevents cross-contamination of water quality caused by the mixing of hot and cold water, and also avoids abnormal temperature rise in the cold water pipe due to the mixing of hot water, or heat waste in the hot water pipe due to the mixing of cold water.

[0046] The heating assembly includes a heating tube and a circuit board 31. The circuit board 31 is disposed on the outside of the metal sleeve 5. The heating tube is arranged around the mixing water pipe 21. The heating tube is electrically connected to the circuit board 31. Circuit board 31 is electrically connected to the electric proportional valve.

[0047] The circuit board 31 is located outside the metal sleeve 5, away from the high-temperature areas of the heating pipe and the mixing water pipe 21, which can effectively prevent the high temperature generated during the heating process from directly affecting the circuit board 31. This design can prevent the electronic components (such as chips and capacitors) on the circuit board 31 from aging faster, degrading in performance, or even short-circuiting due to long-term exposure to high temperature environment, and significantly improve the operational stability and service life of the circuit board 31.

[0048] The heating element is positioned around the outside of the mixing water pipe 21, completely enveloping it and significantly increasing the contact area between the heating element and the water flow. This surround heating allows the water flow within the mixing water pipe 21 to be heated simultaneously from all sides of the pipe wall, preventing localized overheating or uneven heating.

[0049] In addition, circuit board 31 can adjust the hot and cold water ratio in the electric proportional valve according to the user's water demand.

[0050] The first connector 13 is provided with an inlet water temperature detector 6, which is horizontally arranged in the hot water connection channel; The water outlet pipe 42 is equipped with a water outlet temperature detection element 61; The inlet water temperature detector 6 and the outlet water temperature detector 61 are electrically connected to the circuit board 31, respectively.

[0051] The inlet water temperature sensor 6 is horizontally positioned within the hot water connection channel, transmitting a signal to the circuit board 31 to accurately monitor the hot water temperature entering the mixing water pipe 21 in real time. The outlet water temperature sensor 61 is positioned within the outlet water pipe 42 and transmits a signal to the circuit board 31, enabling the circuit board 31 to directly capture the outlet water temperature that the user ultimately contacts, accurately reflecting the actual effect after heating and mixing.

[0052] The inlet water temperature detector, circuit board 31, and outlet water temperature detector form a closed-loop control of "front-end monitoring - terminal feedback": the circuit board 31 compares the data of the two in real time. If the outlet water temperature deviates from the set value, it can be quickly adjusted: either by fine-tuning the power of the heating component or by adjusting the hot and cold water mixing ratio through the electric proportional valve, so as to correct the temperature difference in time, avoid sudden changes in the outlet water temperature, and ensure the temperature stability during user use.

[0053] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A water pipe structure for an instant hot water faucet, characterized in that, From bottom to top, it includes an electric proportional valve, an inlet water assembly, a piping assembly, a heating assembly, and an outlet water assembly; The water inlet assembly includes a hot water inlet pipe and a cold water inlet pipe. The pipe assembly is provided with a hot water flow channel and a mixing water flow channel. The input end of the hot water flow channel is connected to the hot water inlet pipe, the input end of the mixing water flow channel is connected to the cold water inlet pipe, the output end of the hot water flow channel is connected to the input end of the mixing water flow channel, and the output end of the mixing water flow channel is connected to the water outlet assembly. The hot water flow channel is arranged around the outside of the mixing water flow channel. The heating end of the heating component is connected to the mixing water flow channel. The heating component is used to heat the mixing water flow channel. The electric proportional valve is used to adjust the water inlet volume of the hot water inlet pipe and the cold water inlet pipe, and to control the total flow rate.

2. The water pipe structure of an instant hot water faucet according to claim 1, characterized in that, The pipeline assembly includes a mixing water pipeline, a first insulated pipeline, and a second insulated pipeline. The mixing water pipeline, the first insulated pipeline, and the second insulated pipeline are respectively arranged vertically and in a triangular arrangement. The hot water inlet pipe is connected to the bottom of the first insulated pipe, the top of the first insulated pipe is connected to the top of the second insulated pipe, and the bottom of the second insulated pipe is connected to the bottom of the mixing water pipe, forming the hot water flow channel. The cold water inlet pipe is connected to the bottom of the second insulated pipe, and the top of the mixing water pipe is connected to the water outlet assembly to form the mixing water channel.

3. The water pipe structure of an instant hot water faucet according to claim 2, characterized in that, The water inlet assembly further includes a first connector, the bottom of which is provided with a vertical first water inlet end and a second water inlet end, and the top of which is provided with a vertical first water outlet end, a second water outlet end and a first water return end. The first water inlet is connected to the cold water inlet pipe, the first water inlet is connected to the first water outlet, and the first water outlet is connected to the mixing water pipe, forming a cold water inlet channel. The second water inlet is connected to the hot water inlet pipe, the second water inlet is connected to the second water outlet, and the second water outlet is connected to the first insulated pipe, forming a hot water inlet pipe; The first return water end is connected to the bottom of the second insulation pipe, and the bottom of the first return water end is connected to the first outlet water end, forming a first connection channel.

4. The water pipe structure of an instant hot water faucet according to claim 3, characterized in that, The water outlet assembly includes a second connector, a water outlet pipe, and a water vapor separator. The top of the second connector is provided with a third water outlet; the bottom of the second connector is provided with a third water inlet, a fourth water inlet, and a second water return. The third water inlet is connected to the mixed water pipe, the third water inlet is connected to the third water outlet, and the third water outlet is connected to the water outlet assembly, forming a mixed water outlet channel; The fourth water inlet pipe is connected to the first insulation pipe, and the top of the fourth water inlet end is connected to the top of the second return water end to form a second connecting channel. The second return water end is connected to the second insulation pipe.

5. The water pipe structure of an instant hot water faucet according to claim 3, characterized in that, It also includes a metal sleeve, which comprises a mixing water cavity, a first hot water cavity, and a second hot water cavity that are interconnected. The first hot water cavity is used to wrap the first insulated pipe, the second hot water cavity is used to wrap the second insulated pipe, the mixed water cavity is used to wrap the mixed water pipe, the metal sleeve has a heating through hole on the side wall of the mixed water cavity, and the heating end of the heating component passes through the heating through hole and is connected to the mixed water pipe.

6. The water pipe structure of an instant hot water faucet according to claim 4, characterized in that, Both the hot water inlet pipe and the cold water inlet pipe are equipped with one-way valves at their input ends.

7. The water pipe structure of an instant hot water faucet according to claim 6, characterized in that, The heating assembly includes a heating tube and a circuit board. The circuit board is disposed on the outside of the metal sleeve, and the heating tube is arranged around the mixing water pipe. The heating tube is electrically connected to the circuit board. The circuit board is electrically connected to the electric proportional valve.

8. The water pipe structure of an instant hot water faucet according to claim 4, characterized in that, The first connector is equipped with an inlet water temperature sensor, which is horizontally positioned within the hot water connection channel; The water outlet pipe is equipped with a water outlet temperature detection device; The inlet water temperature sensor and the outlet water temperature sensor are electrically connected to the circuit board, respectively.

Images