Instantaneous faucet and water treatment device
By nesting a return connection pipe and a heating pipe within an instant hot water faucet, the problem of cumbersome wiring of the return connection pipe in existing technologies is solved, achieving a compact layout within the faucet and stable water temperature.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG LIZI TECH CO LTD
- Filing Date
- 2026-03-31
- Publication Date
- 2026-06-05
AI Technical Summary
Existing smart faucets have cumbersome backflow connection pipe wiring, which takes up space and affects the stability of the outlet water temperature.
Design an instant water faucet that forms a nested structure by embedding at least part of the return connection pipe inside the heating pipe, reducing the space occupied by the pipe inside the faucet, and heating is achieved through the gap between the heating channel and the return connection pipe, with a compact layout of the return water path and the outlet water path.
The pipe layout inside the instant hot water faucet is compact, which avoids residual hot water affecting the outlet water temperature and improves the water flow utilization efficiency and temperature stability.
Smart Images
Figure CN122148787A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of water treatment technology, and in particular to an instant hot water tap and water treatment equipment. Background Technology
[0002] With economic development and improved living standards, consumers are paying increasing attention to healthy drinking water and have higher requirements for its use. Water purifiers, as water treatment devices that can deeply filter and purify water according to usage requirements, are gaining increasing recognition and favor among consumers. Currently, a type of integrated purifier and heat pump has emerged on the market, allowing consumers to simultaneously access both ambient temperature purified water and hot water, gradually replacing older water purifiers with only a single purification function.
[0003] Currently, integrated water purifiers and heaters are gradually becoming standard equipment for kitchen upgrades. After purifying and heating water, it travels through pipes to the smart faucet. When a user takes hot water and then turns off the smart faucet, some hot water may remain near the faucet's outlet. If this hot water remains near the outlet, its temperature will gradually dissipate into the surrounding environment, resulting in wasted heat energy. Furthermore, when the user takes water again, the residual water near the outlet may affect the temperature of the water taken. Therefore, in existing technology, a backflow connection pipe is sometimes installed on the smart faucet to recycle the residual water near the outlet.
[0004] However, in existing technologies, the return flow connection pipes on smart faucets are mostly implemented by setting up additional pipes, which are relatively cumbersome and space-consuming. Therefore, it is necessary to further innovate smart instant hot water faucets. Summary of the Invention
[0005] The purpose of this invention is to overcome at least one of the aforementioned problems of the prior art. An instant hot water faucet and water treatment device are provided, which facilitates a compact structure within the instant hot water faucet.
[0006] The first aspect of the technical solution of the present invention is: An instant hot water faucet includes a faucet body; the faucet body has a first water outlet, and the faucet body has a water outlet path connected to the first water outlet, the water outlet path having a heating pipe; The faucet body also has a return water passage, the inlet of which is connected to the outlet water passage, and the inlet of which is located downstream of the heating pipe on the outlet water passage. The return water path has a return connection pipe, which is at least partially embedded in the heating pipe, and the inner cavity of the return connection pipe is isolated from the inner cavity of the heating pipe.
[0007] In some embodiments, the faucet body includes a column portion and a cantilever portion disposed on the column portion; The first water outlet is located in the cantilever section, and the cantilever section has a water outlet pipe that connects to the first water outlet; the cantilever section also has a return pipe that connects to the water outlet pipe on the cantilever section; The heating pipe and the return connection pipe are disposed on the column portion; the heating pipe is connected to the water outlet pipe, and the return connection pipe is connected to the return pipe.
[0008] In some embodiments, the heating tube is sleeved outside the return connection tube, and the heating tube and the return connection tube are coaxial or non-coaxial; A heating channel is defined between the inner wall of the heating tube and the outer wall of the return connection tube, and the heating tube is connected to the water outlet pipe through the heating channel.
[0009] In some embodiments, the cantilever portion includes a swing arm portion and a water distribution portion; The water distribution section is rotatably mounted on the top of the column section, the swing arm section is connected to the outer wall of the water distribution section, and the first water outlet is located in the swing arm section. The water distribution section includes an outer annular wall and an inner annular wall disposed at the inner ring of the outer annular wall; an inner annular flow channel is defined within the inner annular wall, and an outer annular flow channel is defined by a gap between the outer peripheral sidewall of the inner annular wall and the inner peripheral sidewall of the outer annular wall, and both the outer annular flow channel and the inner annular flow channel open toward the column section. On the cantilever section, the water outlet pipe is connected to the outer annular flow channel, and the return pipe is connected to the inner annular flow channel; In the main body of the faucet, the heating channel is connected to the outer annular flow channel, and the inner cavity of the return connection pipe is connected to the inner annular flow channel.
[0010] In some embodiments, a water channel connection structure is provided at the top end of the heating tube on the column portion; the top end of the water channel connection structure is connected to the bottom end of the water channel distribution portion. The water connection structure includes an outer shell and an inner shell, both having an inner cavity. The inner shell is located within the inner cavity of the outer shell. An opening is provided at the top of both the outer and inner shells. A return flow channel is defined within the inner cavity of the inner shell, and a hot water flow channel is defined by a gap between the outer peripheral sidewall of the inner shell and the inner peripheral sidewall of the outer shell. When the top end of the water channel connection structure is connected to the bottom end of the water channel distribution part, the top end of the outer shell and the outer annular wall are nested together, and the top end of the inner shell and the inner annular wall are nested together; the hot water flow channel is connected to the outer annular flow channel, and the return flow channel is connected to the inner annular flow channel; The bottom end of the water circuit connection structure is connected to the heating pipe and the return connection pipe; the heating channel is connected to the hot water flow channel, and the inner cavity of the return connection pipe is connected to the return flow channel.
[0011] In some embodiments, there is a gap between the outer bottom wall of the inner shell and the inner bottom wall of the outer shell; the top end of the heating tube penetrates the bottom wall of the outer shell, the top end of the return connection tube extends out of the top end of the heating tube, and the top end of the return connection tube passes through the bottom wall of the inner shell in the inner cavity of the outer shell.
[0012] In some embodiments, the column portion is further provided with a room temperature water pipe independent of the heating pipe; In the water connection structure, a middle shell is provided inside the outer shell, the middle shell has an inner cavity, and the inner shell is disposed in the inner cavity of the middle shell; a gap exists between the inner wall of the middle shell and the outer wall of the inner shell to define a normal temperature flow channel, a gap exists between the outer wall of the middle shell and the inner wall of the outer shell to define a hot water flow channel, and an opening is provided at the top of the middle shell; In the water distribution section, a middle annular wall is provided between the outer annular wall and the inner annular wall; a gap exists between the inner peripheral sidewall of the middle annular wall and the outer peripheral sidewall of the inner annular wall to define an intermediate annular flow channel, and the intermediate annular flow channel opens toward the water connection structure; a gap exists between the outer peripheral sidewall of the middle annular wall and the inner peripheral sidewall of the outer annular wall to define an outer annular flow channel; The top end of the ambient temperature water pipe penetrates the bottom wall of the outer shell and the bottom wall of the middle shell, thereby connecting to the ambient temperature flow channel; the middle annular wall is fitted to the top end of the middle shell, and the ambient temperature flow channel connects to the middle annular flow channel; The swing arm is equipped with a normal temperature water outlet pipe, which is connected to the annular flow channel of the intermediate layer.
[0013] In some embodiments, within the column portion, the bottom end of the heating tube is provided with a water inlet shell, the water inlet shell has a water inlet cavity, and the heating tube communicates with the water inlet cavity; the bottom end of the water inlet shell is also connected to a water inlet pipe communicating with the water inlet cavity, and the water inlet pipe and the return connection pipe are not coaxial; The return connection pipe extends through the water inlet shell in the vertical direction, and the inner cavity of the return connection pipe is isolated from the water inlet cavity.
[0014] In some embodiments, the heating element is a thick-film heating element.
[0015] The second aspect of the technical solution of the present invention is: a water treatment device, including a water purification unit, wherein the water purification unit includes the instant hot water faucet described in the first aspect.
[0016] The instant hot water faucet and water treatment equipment provided by the present invention, by embedding the return connection pipe at least partially into the heating pipe, helps to reduce the space occupied by the pipe structure constituting the return water path and the outlet water path in the instant hot water faucet, thereby making the pipe layout in the instant hot water faucet more compact. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional schematic diagram of an instant hot water faucet provided in an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the instant hot water faucet provided in an embodiment of the present invention after the decorative shell and outer casing components have been removed; Figure 3a This is an exploded view of the instant hot water tap provided in an embodiment of the present invention; Figure 3b This is a longitudinal cross-sectional view of the heating tube and the return connection tube provided in an embodiment of the present invention; Figure 4 This is a bottom view of the cantilever portion provided in an embodiment of the present invention; Figure 5 This is a first exploded view of the waterway connection structure provided in an embodiment of the present invention; Figure 6a This is a second exploded view of the waterway connection structure provided in an embodiment of the present invention; Figure 6b This is a three-dimensional schematic diagram of the waterway connection structure provided in an embodiment of the present invention; Figure 7a This is a bottom view of the waterway connection structure and cantilever portion provided in an embodiment of the present invention; Figure 7b yes Figure 7a Cross-sectional view at point AA; Figure 8a This is a three-dimensional schematic diagram of the water circuit connection structure, heating pipe, return connection pipe and room temperature water pipe provided in the embodiments of the present invention; Figure 8bThis is a bottom view of the water circuit connection structure, heating pipe, return connection pipe and room temperature water pipe provided in the embodiment of the present invention; Figure 9 yes Figure 8b Cross-sectional view at point BB in the middle; Figure 10 yes Figure 8b Cross-sectional view at CC; Figure 11 This is a three-dimensional schematic diagram of the water inlet box, heating tube, and return connection tube provided in an embodiment of the present invention; Figure 12 This is a bottom view of the water inlet box, heating pipe, and return connection pipe provided in an embodiment of the present invention; Figure 13 yes Figure 12 Cross-sectional view at point DD.
[0019] Component descriptions for this application: 100 - Faucet body; 110 - First water outlet; 111 - Control valve assembly; 120 - Water outlet path; 130 - Return water path; 200 - Column section; 210 - Heating tube; 211 - Heating channel; 220 - Return connection pipe; 221 - External connection pipe section; 222 - Sealing wall; 230 - Waterway connection structure; 231-Outer shell; 2311-Hot water flow channel; 2312-Annular protrusion; 2313-First outer shell hole; 2314-Second outer shell hole; 232 - Middle shell; 2321 - Normal temperature flow channel; 2322 - First middle shell hole; 2323 - Second middle shell hole; 233-Inner shell; 2331-Return flow channel; 2332-Inner shell bore; 240 - Normal temperature water pipe; 250 - Mounting bracket; 260 - Temperature sensor; 270 - Housing assembly; 280 - Water inlet housing; 281 - Water inlet chamber; 282 - Water inlet pipe; 283 - Wire mounting channel; 300 - Cantilever section; 310 - Swing arm section; 311 - Water outlet pipe; 312 - Return pipe; 313 - Normal temperature water outlet pipe; 320 - Water distribution section; 321 - Outer annular wall; 3211 - Outer annular channel; 322 - Middle annular wall; 3221 - Intermediate annular channel; 323 - Inner annular wall; 3231 - Inner annular channel; 400 - Decorative casing. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0021] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to direct setup or connection, or indirect setup or connection through centered components or centered structures.
[0022] Furthermore, in embodiments of this invention, terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or in a conventional placement or usage state. These terms are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the structures, features, devices, or elements referred to must have a specific orientation or positional relationship, nor that they must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.
[0023] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / embodiments in this invention will not be described separately.
[0024] like Figures 1 to 3b As shown, in a first aspect, an instant hot water faucet provided by an embodiment of the present invention includes a faucet body 100; the faucet body 100 has a first water outlet 110, and the faucet body 100 has a water outlet path 120 connected to the first water outlet 110, the water outlet path 120 having a heating tube 210; the faucet body 100 also has a return water path 130, the inlet end of the return water path 130 being connected to the water outlet path 120, and the inlet end of the return water path 130 being downstream of the heating tube 210 on the water outlet path 120; the return water path 130 has a return connecting pipe 220, the return connecting pipe 220 being at least partially embedded in the heating tube 210, and the inner cavity of the return connecting pipe 220 being isolated from the inner cavity of the heating tube 210.
[0025] The instant hot water faucet of this application, by having the return connection pipe 220 at least partially embedded in the heating pipe 210, helps to reduce the space occupied by the pipe structure constituting the return water path 130 and the outlet water path 120 in the instant hot water faucet, thereby making the pipe layout in the instant hot water faucet more compact.
[0026] Specifically, please refer to Figures 2 to 4 The faucet body 100 includes a column portion 200 and a cantilever portion 300 disposed on the column portion 200; the first water outlet 110 is located on the cantilever portion 300, and the cantilever portion 300 has a water outlet pipe 311 connected to the first water outlet 110; the cantilever portion 300 also has a return pipe 312, and the return pipe 312 is connected to the water outlet pipe 311 on the cantilever portion 300.
[0027] The heating pipe 210 and the return connection pipe 220 are disposed on the column portion 200; the heating pipe 210 is connected to the water outlet pipe 311, and the return connection pipe 220 is connected to the return pipe 312.
[0028] It is understood that in this application, the water outlet path 120 includes the water outlet pipe 311; and the return water path 130 includes the return pipe 312.
[0029] Thus, in the column portion 200 of the instant hot water faucet of this application, after the heating pipe 210 occupies part of the space inside the column portion 200, the portion of the return connection pipe 220 embedded in the heating pipe 210 no longer occupies additional internal space of the column portion 200, making the pipe wiring inside the column portion 200 compact, which helps to reduce the space occupied by the return connection pipe 220 and the heating pipe 210 inside the column portion 200.
[0030] It is understandable that when water is dispensed from the instant hot water tap, the water flow can be along the water path of heating pipe 210 - water outlet pipe 311 - first water outlet 110, or the water flow can be along the water path of heating pipe 210 - water outlet pipe 311 - return pipe 312 - return connection pipe 220.
[0031] More specifically, please refer to 3b. In this embodiment, the heating tube 210 is sleeved outside the return connection tube 220, that is, the heating tube 210 and the return connection tube 220 form a nested structure, and the wall of the return connection tube 220 is surrounded by the wall of the heating tube 210. The heating tube 210 and the return connection tube 220 are integrally cylindrical. In this way, it is not necessary to stagger the heating tube 210 and the return connection tube 220 so that the return connection tube 220 is at least partially embedded in the heating tube 210, and the degree of embedding of the return connection tube 220 into the heating tube 210 is high.
[0032] In this embodiment, a heating channel 211 with an annular cross-section is defined between the inner wall of the heating tube 210 and the outer wall of the return connection tube 220 (see reference). Figure 8b The heating tube 210 is connected to the water outlet pipe 311 through the heating channel 211.
[0033] Specifically, the heating tube 210 in this application can be a thick film heating tube; that is, the heating tube 210 heats the water flow in the heating channel 211 through its own tube wall.
[0034] In the prior art, a common heating method for the heating tube 210 is to directly use the entire inner cavity of the heating tube 210 as the heating channel 211 and use the tube wall of the heating tube 210 as the heat source to heat the water flow inside the heating tube 210. Compared with the prior art, in this embodiment, the space between the outer wall of the return connection pipe 220 and the inner wall of the heating tube 210 is used as the heating channel 211. In this embodiment, the return connection pipe 220 inserted in the heating tube 210 can limit the flow area inside the heating tube 210. In particular, the return connection pipe 220 can occupy part of the space inside the heating tube 210 away from the tube wall (i.e., occupy part of the space near the central axis of the heating tube 210), so that the heating channel 211 fits against the tube wall of the heating tube 210, which is beneficial for the heating tube 210 to fully heat the water flow in the heating channel 211.
[0035] In this embodiment, the heating pipe 210 and the return connection pipe 220 are coaxially arranged, so that the cross-section of the heating channel 211 is a uniform annular shape, which is beneficial for the heating pipe 210 to fully heat the water flow in the heating channel 211.
[0036] It is understood that in other embodiments, the return connection pipe 220 and the heating pipe 210 may also be arranged coaxially, and the cross-section of the heating channel 211 may also be crescent-shaped.
[0037] In a specific implementation of an instant hot water tap, when water is supplied to the heating channel 211 and the heating pipe 210 is working and generating heat, the heating pipe 210 on the column part 200 heats the water flowing through the heating channel 211. The heated water flows to the outlet pipe 311 on the cantilever part 300 after passing through the heating channel 211, and then flows further to the first outlet 110 through the outlet pipe 311 to discharge water to the outside.
[0038] When water supply to the heating channel 211 is stopped and heating of the heating pipe 210 is stopped, residual water may remain in the outlet pipe 311 on the cantilever portion 300. This residual water can then flow back through the return pipe 312 to the return connection pipe 220 on the column portion 200, and further flow to the external water storage device through the return connection pipe 220. Since the residual water in the outlet pipe 311 is heated when flowing through the heating channel 211, this residual water may still have a high temperature when it flows to the external water storage device. The external water storage device can be equipped with an insulation design to preserve the heat energy of this residual water for reuse, such as by resupplying the residual water to the heating channel 211.
[0039] Meanwhile, since the residual water in the outlet pipe 311 can flow away through the return pipe 312 and will not remain in the outlet pipe 311 on the cantilever part 300, when water is supplied to the heating channel 211, the heating pipe 210 heats the water flow, and the heated water flow is discharged to the outside through the outlet pipe 311-first outlet 110, residual water can be avoided from entering the water flow; for example, when the residual water is water with a low temperature, this setting avoids the outlet water temperature from dropping.
[0040] Of course, when supplying water to the heating channel 211, the heating tube 210 can also be made not to work and generate heat (for example, when the user needs relatively low temperature water). In this case, the setting of the return pipe 312 avoids residual water in the outlet pipe 311, which helps to prevent the outlet water from rising in temperature due to the mixing of residual water.
[0041] Please see Figure 3a In this embodiment, specifically, the cantilever portion 300 includes a swing arm portion 310 and a water distribution portion 320; the water distribution portion 320 is rotatably disposed at the top of the column portion 200, the swing arm portion 310 is connected to the outer side wall of the water distribution portion 320, and the first water outlet 110 is located in the swing arm portion 310.
[0042] The swing arm portion 310 is connected to the column portion 200 via the water distribution portion 320, so that when the water distribution portion 320 rotates on the column portion 200, the swing arm portion 310 can rotate (oscillate) relative to the column portion 200, thereby adjusting the position of the first outlet 110. It can be understood that the swing arm portion 310 can serve as a lever for driving the water distribution portion 320 to rotate on the column portion 200.
[0043] See Figure 4In this embodiment, the water distribution portion 320 includes an outer annular wall 321 and an inner annular wall 323 disposed at the inner ring of the outer annular wall 321. An inner annular flow channel 3231 is defined within the inner annular wall 323, and a gap exists between the outer peripheral sidewall of the inner annular wall 323 and the inner peripheral sidewall of the outer annular wall 321 to define the outer annular flow channel 3211. The outer annular flow channel 3211 has a circular cross-section, and the inner annular flow channel 3231 has a circular cross-section.
[0044] In this embodiment, both the outer annular flow channel 3211 and the inner annular flow channel 3231 open toward the column portion 200 (i.e., the bottom direction of the water distribution portion 320). In this embodiment, when the swing arm portion 310 is swung to adjust the position of the first outlet 110, the projections of the outer annular flow channel 3211 and the inner annular flow channel 3231 in the vertical direction remain unchanged.
[0045] On the cantilever portion 300, the outlet pipe 311 connects to the outer annular flow channel 3211; the return pipe 312 connects to the inner annular flow channel 3231. More specifically, the outlet pipe 311 penetrates the outer annular wall 321 and connects to the outer annular flow channel 3211, and the return pipe 312 sequentially penetrates the outer annular wall 321 and the inner annular wall 323 and connects to the inner annular flow channel 3231. Thus, both the outlet pipe 311 and the return pipe 312 can be directly inserted into the water distribution section 320 from the outer wall of the water distribution section 320 (i.e., the outer wall of the outer annular wall 321), and further connected to the corresponding outer annular flow channel 3211 and inner annular flow channel 3231. When the outlet pipe 311 and the return pipe 312 are connected to the water distribution section 320, neither the outlet pipe 311 nor the return pipe 312 needs to go around the outer annular wall 321 and the inner annular wall 323 in the wiring, which helps to make the cantilever section 300 look neat.
[0046] It is understood that in the faucet body 100, the heating channel 211 is connected to the outer annular flow channel 3211, and the inner cavity of the return connection pipe 220 is connected to the inner annular flow channel 3231; the outer annular flow channel 3211 is part of the water outlet channel 120, and the inner annular flow channel 3231 is part of the return flow channel 130.
[0047] During the assembly of the cantilever section 300 and the column section 200, since the cross-sections of the outer annular flow channel 3211 and the inner annular flow channel 3231 are annular and circular respectively, it is advantageous for the outer annular flow channel 3211 and the inner annular flow channel 3231 to connect to the inner cavity of the heating channel 211 with an annular cross-section and the return connection pipe 220 with a circular cross-section, respectively. The cross-section of the water channel in the water distribution section 320 cooperates with the heating pipe 210 and the return connection pipe 220.
[0048] Specifically, please refer to Figures 5 to 7b In this embodiment, a water channel connection structure 230 is provided at the top end of the heating tube 210 on the column portion 200; the top end of the water channel connection structure 230 is connected to the bottom end of the water channel distribution portion 320.
[0049] The water connection structure 230 includes an outer shell 231 and an inner shell 233, both having an inner cavity. The inner shell 233 is located within the inner cavity of the outer shell 231. The outer shell 231 has a circular opening at its top, and the inner shell 233 also has a circular opening at its top. A return flow channel 2331 is defined within the inner cavity of the inner shell 233. A gap exists between the outer peripheral sidewall of the inner shell 233 and the inner peripheral sidewall of the outer shell 231, defining a hot water flow channel 2311. Specifically, in this embodiment, the hot water flow channel 2311 has an annular cross-section, and the return flow channel 2331 has a circular cross-section. The hot water flow channel 2311 and the return flow channel 2331 form a nested layout and open towards the top.
[0050] Please see Figure 7a and Figure 7b When the top end of the water channel connection structure 230 is connected to the bottom end of the water channel distribution portion 320, the top end of the outer shell 231 and the bottom end of the outer annular wall 321 are nested together, and the top end of the inner shell 233 and the bottom end of the inner annular wall 323 are nested together. In this embodiment, the outer annular wall 321 is fitted onto the outside of the top end of the outer shell 231, and the inner annular wall 323 is fitted onto the outside of the top end of the inner shell 233. The water channel distribution portion 320 covers the opening at the top end of the outer shell 231 and the opening at the top end of the inner shell 233. Thus, the top end of the hot water flow channel 2311 with an annular cross-section can connect to the outer annular flow channel 3211 with an annular cross-section, and the top end of the return flow channel 2331 with a circular cross-section can connect to the inner annular flow channel 3231 with a circular cross-section. The water channels in the water channel connection structure 230 and the water channels in the water channel distribution portion cooperate with each other.
[0051] Specifically, in this embodiment, the top of the outer shell 231 and the bottom of the outer annular wall 321 are both annular and coaxial, and the top of the inner shell 233 and the bottom of the inner annular wall 323 are both annular and coaxial. Therefore, the water distribution part 320 and the water connection structure 230 can cooperate to form a multi-stage coaxial sleeve structure, and thus can rotate and cooperate with each other. When the water distribution part 320 rotates at the top of the water connection structure 230, the flow area from the hot water flow channel 2311 to the outer annular flow channel 3211 and the flow area from the return flow channel 2331 to the inner annular flow channel 3231 are not affected. Thus, the flow rate of the instant hot water faucet is stable when water is flowing.
[0052] Specifically, the bottom end of the water connection structure 230 is connected to the top end of the heating pipe 210 and the return connection pipe 220; the heating channel 211 is connected to the hot water flow channel 2311, and the inner cavity of the return connection pipe 220 is connected to the return flow channel 2331. In the instant hot water faucet, the heating channel 211 is connected to the hot water flow channel 2311, and is connected to the outer annular flow channel 3211 through the hot water flow channel 2311; the inner cavity of the return connection pipe 220 is connected to the return flow channel 2331, and is connected to the inner annular flow channel 3231 through the return flow channel 2331.
[0053] It is understood that the annular hot water flow channel 2311 connects to the annular heating channel 211; the circular return flow channel 2331 connects to the inner cavity of the circular return connection pipe 220. Thus, the water channels within the water connection structure 230 cooperate with the water channels within the heating pipe 210 and the return connection pipe 220, and the water connection structure 230 connects the inner cavity of the hot water flow channel 2311 and the return connection pipe 220 to the water distribution section 320.
[0054] It is understood that in this application, the bottom end of the water distribution part 320 is rotatably fitted with the top end of the water connection structure 230. However, this application does not limit the connection method between the heating pipe 210 (and the return connection pipe 220 in the heating pipe 210) and the water connection structure 230 to a rotatable fit.
[0055] See Figure 5 and Figure 8b In this embodiment, the heating tube 210 is not coaxial with the outer shell 231, the heating channel 211 inside the heating tube 210 and the hot water flow channel 2311 on the water connection structure 230 are not coaxial, and the inner cavity of the return connection pipe 220 and the return flow channel 2331 are not coaxial. In this embodiment, the heating tube 210 (and the return connection pipe 220) are fixedly connected to the bottom end of the water connection structure 230.
[0056] Since the connection between the heating tube 210 (and the return connection tube 220) and the water circuit connection structure 230 is not limited to a rotating fit, the installation method of the heating tube 210 (and the return connection tube 220) at the bottom of the water circuit connection structure 230 is highly flexible.
[0057] For example, when the heating pipe 210 and the return connection pipe 220 are fixedly connected to the bottom end of the water connection structure 230, the heating pipe 210 can be arranged vertically or inclined within the column portion 200. By allowing the heating pipe 210 and the return connection pipe 220 to have different arrangements, they can cooperate to avoid other structures (such as temperature sensors 260, circuit boards, signal lines, and power lines typically found in instant water faucets) within the column portion 200. This provides high flexibility in the installation of other structures within the column portion 200.
[0058] Alternatively, the heating tube 210 can be vertically connected to the bottom of the water connection structure 230, and the heating tube 210 and the outer shell 231 can be coaxial, and the return connection tube 220 and the inner shell 233 can be coaxial. Thus, it is convenient to set the connection method of the heating tube 210, the return connection tube 220 and the water connection structure 230 to a rotational fit.
[0059] Specifically, please refer to Figures 8a to 9 In this application, there is a gap between the outer bottom wall of the inner shell 233 and the inner bottom wall of the outer shell 231; the top end of the heating tube 210 penetrates the bottom wall of the outer shell 231, thereby connecting the heating channel 211 to the hot water flow channel 2311; the top end of the return connection pipe 220 extends out of the top end of the heating tube 210, and the top end of the return connection pipe 220 penetrates the bottom wall of the inner shell 233 in the inner cavity of the outer shell 231.
[0060] By creating a gap between the outer bottom wall of the inner shell 233 and the inner bottom wall of the outer shell 231, when water flows from the heating channel 211 into the hot water channel 2311, the water can flow laterally between the outer bottom wall of the inner shell 233 and the inner bottom wall of the outer shell 231 within the outer shell 231. Furthermore, the water can flow further within the outer shell 231 to near the inner circumferential sidewall of the outer shell 231, and then flow upwards along the inner circumferential sidewall before flowing into the outer annular channel 3211. This gap between the outer bottom wall of the inner shell 233 and the inner bottom wall of the outer shell 231 facilitates the entry of water from the heating channel 211 into and through the hot water channel 2311.
[0061] Especially when the top of the heating channel 211 and the hot water flow channel 2311 are not on the same axis and have different diameters, the distance between the outer bottom wall of the inner shell 233 and the inner bottom wall of the outer shell 231 can ensure the smooth flow of water in the outer shell 231.
[0062] The top end of the return connection pipe 220 can pass through the gap between the outer bottom wall of the inner shell 233 and the inner bottom wall of the outer shell 231, and penetrate through the bottom wall of the inner shell 233, so that the inner cavity of the return connection pipe 220 is connected to the return flow channel 2331. It can be understood that the top end of the return connection pipe 220 can be fixedly connected (e.g., welded) to the bottom wall of the inner shell 233, or interference-fitted to the outer bottom wall of the inner shell 233, thereby providing support for the inner shell 233, so that there is a gap between the outer bottom wall of the inner shell 233 and the inner bottom wall of the outer shell 231.
[0063] In some embodiments, the instant hot water faucet also includes a domestic water supply circuit. For example, in one specific implementation, the instant hot water faucet is integrated with a water purifier. The drinking water purified by the purifier can enter the heating channel 211 and, through the water outlet circuit 120 within the faucet body 100, be output to the outside through the first outlet 110. Simultaneously, the water purifier can also supply unpurified water into the domestic water supply circuit of the instant hot water faucet, which is then output to the outside. The unpurified water can be used for daily non-drinking purposes. It is understood that the domestic water supply circuit may not have an independent heating device and can be used to deliver room temperature water.
[0064] For details regarding the water circuit setup within instant hot water faucets, please refer to [link / reference]. Figure 3a In this embodiment, the column portion 200 is also provided with a room temperature water pipe 240 that is independently disposed outside the heating pipe 210.
[0065] Please see Figures 4 to 7b In the water connection structure 230, a middle shell 232 is disposed within the outer shell 231. The middle shell 232 has an inner cavity, and an inner shell 233 is disposed within the inner cavity of the middle shell 232. The outer shell 231, middle shell 232, and inner shell 233 are nested sequentially. A gap exists between the inner wall of the middle shell 232 and the outer wall of the inner shell 233, defining a normal temperature flow channel 2321. A gap exists between the outer wall of the middle shell 232 and the inner wall of the outer shell 231, defining a hot water flow channel 2311. The wall of the middle shell 232 can be completely separated from the walls of the outer shell 231 and the inner shell 233 to separate the space between the walls of the outer shell 231 and the inner shell 233. The top of the middle shell 232 has a circular opening; at the top of the water channel connection structure 230, the openings on the top of the walls of the outer shell 231, the middle shell and the inner shell 233 are arranged in a nested layout.
[0066] In the water distribution section 320, a middle annular wall 322 is provided between the outer annular wall 321 and the inner annular wall 323; the inner peripheral sidewall of the middle annular wall 322 and the outer peripheral sidewall of the inner annular wall 323 are spaced together to define an intermediate annular flow channel 3221, and the intermediate annular flow channel 3221 opens toward the water connection structure 230; the outer peripheral sidewall of the middle annular wall 322 and the inner peripheral sidewall of the outer annular wall 321 are spaced together to define an outer annular flow channel 3211.
[0067] Please see Figure 8a , Figure 8b and Figure 10 When the ambient temperature water pipe 240 is connected to the water connection structure 230, the top end of the ambient temperature water pipe 240 penetrates the bottom wall of the outer shell 231 and the bottom wall of the middle shell 232, thereby connecting to the ambient temperature flow channel 2321; see reference. Figure 7b When the water distribution section 320 is set at the top of the water connection structure 230, the middle annular wall 322 is sleeved on the outer side of the top wall of the middle shell 232, and the normal temperature flow channel 2321 is connected to the middle annular flow channel 3221.
[0068] Thus, in the water channel connection structure 230 and the water channel distribution section 320, the outer annular wall 321 corresponds to the outer shell 231, the middle annular wall 322 corresponds to the middle shell 232, and the inner annular wall 323 corresponds to the inner shell 233. Simultaneously, the hot water flow channel 2311 corresponds to the outer annular flow channel 3211, the ambient temperature flow channel 2321 corresponds to the middle annular flow channel 3221, and the return flow channel 2331 corresponds to the inner annular flow channel 3231. The water channel connection structure 230 and the water channel distribution section 320 form a multi-stage coaxial sleeve structure, allowing them to rotate and engage with each other.
[0069] Please see Figure 4 The swing arm portion 310 is provided with a normal temperature water outlet pipe 313, which passes through the outer wall of the water distribution portion 320 (the outer peripheral side wall of the outer annular wall 321) and the middle annular wall 322 to connect to the intermediate layer annular flow channel 3221.
[0070] Thus, the ambient temperature water pipe 240, the ambient temperature flow channel 2321, the intermediate annular flow channel 3221, and the ambient temperature outlet pipe 313 together form the domestic water circuit in the instant hot water faucet. When supplying water to the ambient temperature water pipe 240, the water flow can exit through the ambient temperature water pipe 240 - ambient temperature flow channel 2321 - intermediate annular flow channel 3221 - ambient temperature outlet pipe 313.
[0071] In this embodiment, the ambient temperature water pipe 240 is disposed inside the column portion 200 and independently disposed outside the heating pipe 210, and the ambient temperature water outlet pipe 313 is disposed in the cantilever portion 300; the middle annular wall 322 and the middle shell 232 are respectively integrated into the water connection structure 230 and the water distribution portion 320, resulting in a compact structure.
[0072] Understandably, the inner bottom wall of the outer shell 231 may be provided with an annular protrusion 2312. A channel within the annular protrusion 2312 connects the bottom of the outer shell 231 and the inner cavity (i.e., the ambient temperature flow channel 2321) of the middle shell 232. The channel within the annular protrusion 2312 is used for the insertion of an ambient temperature water pipe 240. Optionally, one end of the annular protrusion 2312 near the middle shell 232 may be fixedly connected to the bottom wall of the middle shell 232, so that the bottom wall of the middle shell 232 is raised above the inner bottom wall of the outer shell 231. During assembly of the outer shell 231 and the middle shell 232, the annular protrusion 2312 allows for a gap between the walls of the outer shell 231 and the middle shell 232. The annular protrusion 2312 may be fixedly connected to the bottom wall of the middle shell 232 by welding or by interference fit for support and abutment.
[0073] Optionally, the top end of the ambient temperature water pipe 240 can also be fixedly connected to the bottom wall of the middle shell 232 to support the middle shell 232.
[0074] Specifically, please refer to Figure 5 and Figure 7b In this embodiment, the inner shell 233 is provided with an inner shell hole 2332, the middle shell 232 is provided with a first middle shell hole 2322 and a second middle shell hole 2323, and the outer shell 231 is provided with a first outer shell hole 2313 and a second outer shell hole 2314. When the water connection structure 230 is connected to the heating pipe 210, the return connection pipe 220, and the room temperature water pipe 240, the heating pipe 210 is inserted into the first outer shell hole 2313, the return connection pipe 220 is inserted into the first outer shell hole 2313, the first middle shell hole 2322, and the inner shell hole 2332, and the room temperature water pipe 240 is inserted into the second outer shell hole 2314 and the second middle shell hole 2323. The annular protrusion 2312 is connected to the second outer shell hole 2314 in the inner cavity of the outer shell 231.
[0075] Understandably, please refer to Figure 1 and Figure 2In this embodiment, the column portion 200 has a cylindrical outer shell assembly 270, and both the heating tube 210 and the room temperature water pipe 240 are located inside the outer shell assembly 270. When the heating tube 210 is working and dissipating heat, the outer shell assembly 270 can prevent the user from touching the heating tube 210 and being burned; when the air inside the outer shell assembly 270 is heated by the heating tube 210, the room temperature water flow in the room temperature water pipe 240 can exchange heat with the air inside the outer shell assembly 270, thereby reducing the air temperature inside the outer shell assembly 270 and preventing the user from feeling hot when touching the outer shell assembly 270.
[0076] In some embodiments, a mounting bracket 250 extending toward the heating tube 210 may also be provided on the ambient temperature water pipe 240, and a temperature sensor 260 is provided on the mounting bracket 250 to measure the temperature of the heating tube 210.
[0077] Specifically, please refer to Figures 11 to 13 In this embodiment, within the column portion 200, a water inlet shell 280 is provided at the bottom end of the heating tube 210. The water inlet shell 280 has a water inlet cavity 281, and the heating tube 210 communicates with the water inlet cavity 281. The bottom end of the water inlet shell 280 is also connected to a water inlet pipe 282 communicating with the water inlet cavity 281. The water inlet pipe 282 and the return connection pipe 220 are not coaxial. The return connection pipe 220 penetrates the water inlet shell 280 in a vertical direction, and its inner cavity is isolated from the water inlet cavity 281. In this embodiment, a room temperature water pipe 240 penetrates the water inlet shell 280 in a vertical direction. The room temperature water pipe 240 is not coaxial with the water inlet pipe 282 and the heating tube 210, and its inner cavity is isolated from the water inlet cavity 281.
[0078] In practical applications, water can be supplied to the heating pipe 210 through the inlet pipe 282. The water flows through the inlet pipe 282, the inlet chamber 281, and the heating pipe 210, and further into the heating channel 211 within the heating pipe 210. The return connection pipe 220, after passing through the inlet shell 280, can be connected to an external water pipe at the bottom of the inlet shell 280. Since the return connection pipe 220 and the inlet pipe 282 are not coaxial, the external water pipe connecting the return connection pipe 220 and the inlet pipe 282 can be separated from each other. The inlet shell 280 allows the water inlet of the heating pipe 210 (inlet pipe 282) and the water inlet of the return connection pipe 220 to be de-nested, facilitating the connection of the heating pipe 210's water inlet (inlet pipe 282) and the return connection pipe 220 to the external water supply system.
[0079] In a specific detail of this embodiment, the lower end of the return connection pipe 220 has a sealing wall 222, the outer side of which is parallel to the bottom end face of the water inlet shell 280. An external connection pipe section 221 is connected to the sealing wall 222. The diameter of the external connection pipe section 221 is smaller than that of the return connection pipe 220, and it communicates with the inner cavity of the return connection pipe 220. The return connection pipe 220 is connected to an external water pipe through the external connection pipe section 221.
[0080] It is understood that in this embodiment, the water inlet shell 280 also has a wire installation channel 283 that runs through the top and bottom ends of the water inlet shell 280. The wire installation channel 283 and the water inlet cavity 281 are isolated from each other. The wire installation channel 283 is used to allow the wire to pass through the water inlet shell 280.
[0081] It is understood that in this embodiment, a control valve assembly 111 may be provided on the cantilever portion 300 at the first water outlet 110, the cantilever portion 300 has a decorative housing 400, and a control module is provided on the top of the decorative housing 400. The control valve assembly 111, the decorative housing 400, and the control module are all prior art in the field of instant hot water faucets, and will not be described in detail here.
[0082] Secondly, this application also provides a water treatment device, including a water purification unit, which includes an instant hot water faucet as described above.
[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An instant hot water faucet, characterized in that, It includes a faucet body; the faucet body has a first water outlet, and the faucet body has a water outlet path connected to the first water outlet, and the water outlet path has a heating pipe; The faucet body also has a return water passage, the inlet of which is connected to the outlet water passage, and the inlet of which is located downstream of the heating pipe on the outlet water passage. The return water path has a return connection pipe, which is at least partially embedded in the heating pipe, and the inner cavity of the return connection pipe is isolated from the inner cavity of the heating pipe.
2. The instant hot water faucet as described in claim 1, characterized in that, The main body of the faucet includes a column portion and a cantilever portion disposed on the column portion; The first water outlet is located in the cantilever section, and the cantilever section has a water outlet pipe that connects to the first water outlet; the cantilever section also has a return pipe that connects to the water outlet pipe on the cantilever section; The heating pipe and the return connection pipe are disposed on the column portion; the heating pipe is connected to the water outlet pipe, and the return connection pipe is connected to the return pipe.
3. The instant hot water faucet as described in claim 2, characterized in that, The heating tube is sleeved outside the return connection tube, and the heating tube and the return connection tube may be coaxial or non-coaxial; A heating channel is defined between the inner wall of the heating tube and the outer wall of the return connection tube, and the heating tube is connected to the water outlet pipe through the heating channel.
4. The instant hot water faucet as described in claim 3, characterized in that, The cantilever section includes a swing arm section and a water distribution section; The water distribution section is rotatably mounted on the top of the column section, the swing arm section is connected to the outer wall of the water distribution section, and the first water outlet is located in the swing arm section. The water distribution section includes an outer annular wall and an inner annular wall disposed at the inner ring of the outer annular wall; an inner annular flow channel is defined within the inner annular wall, and an outer annular flow channel is defined by a gap between the outer peripheral sidewall of the inner annular wall and the inner peripheral sidewall of the outer annular wall, and both the outer annular flow channel and the inner annular flow channel open toward the column section. On the cantilever section, the water outlet pipe is connected to the outer annular flow channel, and the return pipe is connected to the inner annular flow channel; In the main body of the faucet, the heating channel is connected to the outer annular flow channel, and the inner cavity of the return connection pipe is connected to the inner annular flow channel.
5. The instant hot water faucet as described in claim 4, characterized in that, On the column portion, a water channel connection structure is provided at the top of the heating tube; the top of the water channel connection structure is connected to the bottom of the water channel distribution portion. The water connection structure includes an outer shell and an inner shell, both having an inner cavity. The inner shell is located within the inner cavity of the outer shell. An opening is provided at the top of both the outer and inner shells. A return flow channel is defined within the inner cavity of the inner shell, and a hot water flow channel is defined by a gap between the outer peripheral sidewall of the inner shell and the inner peripheral sidewall of the outer shell. When the top end of the water channel connection structure is connected to the bottom end of the water channel distribution part, the top end of the outer shell and the outer annular wall are nested together, and the top end of the inner shell and the inner annular wall are nested together; the hot water flow channel is connected to the outer annular flow channel, and the return flow channel is connected to the inner annular flow channel; The bottom end of the water circuit connection structure is connected to the heating pipe and the return connection pipe; the heating channel is connected to the hot water flow channel, and the inner cavity of the return connection pipe is connected to the return flow channel.
6. The instant hot water faucet as described in claim 5, characterized in that, There is a gap between the outer bottom wall of the inner shell and the inner bottom wall of the outer shell; the top end of the heating tube penetrates the bottom wall of the outer shell, the top end of the return connection tube extends out of the top end of the heating tube, and the top end of the return connection tube penetrates the bottom wall of the inner shell in the inner cavity of the outer shell.
7. The instant hot water faucet as described in claim 6, characterized in that, The column section is also equipped with a room temperature water pipe that is independent of the heating pipe; In the water connection structure, a middle shell is provided inside the outer shell, the middle shell has an inner cavity, and the inner shell is disposed in the inner cavity of the middle shell; a gap exists between the inner wall of the middle shell and the outer wall of the inner shell to define a normal temperature flow channel, a gap exists between the outer wall of the middle shell and the inner wall of the outer shell to define a hot water flow channel, and an opening is provided at the top of the middle shell; In the water distribution section, a middle annular wall is provided between the outer annular wall and the inner annular wall; a gap exists between the inner peripheral sidewall of the middle annular wall and the outer peripheral sidewall of the inner annular wall to define an intermediate annular flow channel, and the intermediate annular flow channel opens toward the water connection structure; a gap exists between the outer peripheral sidewall of the middle annular wall and the inner peripheral sidewall of the outer annular wall to define an outer annular flow channel; The top end of the ambient temperature water pipe penetrates the bottom wall of the outer shell and the bottom wall of the middle shell, thereby connecting to the ambient temperature flow channel; the middle annular wall is fitted to the top end of the middle shell, and the ambient temperature flow channel connects to the middle annular flow channel; The swing arm is equipped with a normal temperature water outlet pipe, which is connected to the annular flow channel of the intermediate layer.
8. The instant hot water faucet as described in claim 2, characterized in that, Inside the column section, the bottom end of the heating tube is provided with a water inlet shell, the water inlet shell has a water inlet cavity, and the heating tube is connected to the water inlet cavity; the bottom end of the water inlet shell is also connected to a water inlet pipe that is connected to the water inlet cavity, and the water inlet pipe and the return connection pipe are not coaxial; The return connection pipe extends through the water inlet shell in the vertical direction, and the inner cavity of the return connection pipe is isolated from the water inlet cavity.
9. The instant hot water faucet as described in any one of claims 1-8, characterized in that, The heating element is a thick-film heating element.
10. A water treatment device, characterized in that, Includes a water purification unit, wherein the water purification unit includes an instant hot water faucet as described in any one of claims 1-9.