Water heater multifunctional water inlet and outlet structure with liner welding-free pipe nozzle and water heater

Abstract

A water heater multifunctional water inlet and outlet structure with a liner welding-free pipe nozzle comprises a water inlet pipe set, a water outlet pipe set and a flow guide box assembly installed in a water heater liner, the water inlet pipe set and the water outlet pipe set are arranged on the flow guide box assembly in a penetrating mode, the water heater multifunctional water inlet and outlet structure further comprises a titanium rod assembly, and the titanium rod assembly is arranged on the flow guide box assembly in a penetrating mode. The flow guide box assembly comprises a flow guide box seat and a flow guide box cover, the flow guide box cover covers the flow guide box seat to define a flow guide cavity, and the water outlet hole of the water inlet pipe set is communicated with the flow guide cavity. Compared with the prior art, the technical scheme provided by the utility model has the advantages of multiple functions, high function integration degree, simple structure, convenience in mold opening production, long service life, strong environmental adaptability, good user experience, safety and comfort.

Description

Technical Field

[0001] The utility model relates to a multifunctional water inlet and outlet structure of a water heater with an inner tank and a welding-free nozzle, and the water heater. Background Art

[0002] At present, the various functional configurations of storage-type electric water heaters on the market are uneven and the degree of functional integration is low. For example, some products only have one or several of the following functions: scale prevention, high hot water output rate, electronic anode anti-corrosion, ultraviolet sterilization, silver ion antibacterial, and electric wall protection. Although this differentiation strategy in functional configuration has brought manufacturers the advantage of differentiated product sales and corresponding profit growth points, users can often only buy products that "lose sight of one thing while focusing on another" and rarely buy products that integrate multiple functions. The main reason for this phenomenon is that manufacturers have scattered R&D directions when developing various functions and pay little attention to functional integration, resulting in uncontrollable costs for various functions. Ultimately, only one or several functions can be retained. Therefore, developing a storage-type electric water heater product that is functionally intensive, simple in structure, cost-controlled, highly adaptable to the use environment, and completely surpasses competitors in terms of functional integration is the goal pursued by many manufacturers.

[0003] For example, a Chinese invention application with application publication number CN110319587A, entitled "A water baffle and water heater", discloses: a water baffle (10), comprising an integrally formed water baffle box (1) and a support sleeve (2), wherein the end of the support sleeve (2) not connected to the water baffle box (1) can pass through the inner tank (20) of the water heater and be snap-fitted with the inner tank (20) to fix the water baffle box (1) and the inner tank (20). The end of the support sleeve (2) not connected to the water baffle box (1) is provided with a buckle (21), and the buckle (21) can be snap-fitted with the inner tank (20). The technical solution described in the invention application has the following shortcomings: although the support sleeve (2) is snap-fitted with the inner tank, thereby avoiding welding a nozzle on the inner tank to prevent the inner tank from exploding, the function of the water baffle box (1) is only to slow down the speed at which cold water enters the inner tank to prevent the upper hot water layer from being disturbed. The function is too simple and the product competitiveness is weak.

[0004] For another example, the Chinese utility model patent with the authorization publication number CN212842238U, entitled "Water Inlet Structure of Water Heater", discloses: comprising a cold water inlet pipe (3) with a peripheral wall water outlet, and also comprising a flow guide component built into the inner tank, the flow guide component comprising a flow guide box (4) with a flow guide cavity (41), a sleeve member (5) sleeved on the cold water inlet pipe (3) and connected with the peripheral wall water outlet, the sleeve member (5) being fixedly mounted on the side of the flow guide cavity (41) of the flow guide box (4) and having a plurality of conduction ports connected with the flow guide cavity inside the flow guide box (4) at the bottom thereof, a plurality of conduction holes (411) connected with the inner tank being arranged and distributed on the bottom surface of the flow guide cavity (41) of the flow guide box (4), and the cold water is guided into the inner tank through the cold water inlet pipe (3), the peripheral wall water outlet, the sleeve member (5), the conduction port, the flow guide cavity (41), and the flow guide holes (411) in sequence. The technical solution described in this utility model has the following deficiencies: the guide box (4) has only a very simple function of slowing down the water flow, and this solution may even still require welding the nozzle at the inner tank, which cannot avoid the porcelain explosion of the inner tank.

[0005] For another example, the Chinese utility model patent with the authorization publication number CN207649075U and the title of electric water heater with slow flow discloses: comprising an inner tank provided with a water inlet pipe head and a water outlet pipe head, and also comprising a slow flow box assembly and a water inlet part installed inside the inner tank; the slow flow box assembly comprises a hollow slow flow box fixing column, a slow flow box body and a slow flow box cover: wherein the outer diameter of the slow flow box fixing column is adapted to the inner diameter of the water outlet pipe head; the slow flow box body comprises a bottom box matched with the slow flow box cover, a fixed fin plate extending from one side of the bottom box and a buffer portion; the slow flow The upper cover of the box is fitted over the top of the bottom box, the buffer portion is provided on the bottom box and is located between the bottom box and the upper cover of the slow-flow box; a mounting hole is provided on the fixed fin plate, the fastening post of the slow-flow box is sleeved inside the water outlet pipe head, and one end of the fastening post of the slow-flow box, which is close to the inner wall of the inner tank, is connected to the mounting hole; a water flow channel is provided in the buffer portion; one end of the water inlet is provided on the water inlet pipe head, and the other end passes through the inside of the water inlet pipe head into the buffer portion, and then passes through the upper cover of the slow-flow box into the inner tank; the water inlet is provided with a plurality of water outlet holes on the peripheral wall of the buffer portion. The technical solution described in this utility model has the following deficiencies: the slow-flow box assembly has a complex structure, is difficult to produce by mold opening, and has a single function.

[0006] Finally, the Chinese invention application with application publication number CN114623594U, entitled "An Energy Regulating and Recovering High-Efficiency Water Heater", discloses: comprising: an inner tank (1), a hot water outlet pipe (2) and a cold water inlet pipe (3), wherein a diffused water heat exchange slow flow box (4) is provided inside the inner tank (1) and is connected thereto, wherein the hot water outlet pipe (2) extends into the inner tank (1) and is at least partially provided inside the diffused water heat exchange slow flow box (4), wherein the cold water inlet pipe (3) is connected to the diffused water heat exchange slow flow box (4), and cold water enters the diffused water heat exchange slow flow box (4) through the cold water inlet pipe (3) and exchanges heat with hot water inside the hot water outlet pipe (2) in the diffused water heat exchange slow flow box (4). The technical solution described in this invention application also has the problem that the diffused water heat exchange slow flow box (4) has a single function. Utility Model Content

[0007] In response to the shortcomings of the existing technology, the utility model provides a multifunctional water inlet and outlet structure and a water heater with diverse functions, high degree of functional integration, simple structure, easy mold opening and production, long service life, strong environmental adaptability, good user experience, safe and comfortable inner tank and welding-free nozzle.

[0008] The utility model mainly adopts the following technical solutions:

[0009] A multifunctional water inlet and outlet structure for a water heater with an inner tank and a welding-free nozzle comprises an inlet pipe group, an outlet pipe group and a guide box assembly installed in the inner tank of the water heater, and is characterized in that: the inlet pipe group and the outlet pipe group are respectively passed through the guide box assembly, and further comprises a titanium rod assembly, and the titanium rod assembly is also passed through the guide box assembly, the guide box assembly comprises a guide box seat and a guide box cover, the guide box seat is covered with the guide box cover to enclose a guide cavity, and the water outlet hole of the inlet pipe group is communicated with the guide cavity.

[0010] A drain outlet is provided on the side of the guide box seat and / or the guide box cover, and the cold water entering through the water inlet pipe group flows into the guide cavity through the water outlet hole and is discharged into the water heater tank through the drain outlet. A water flow baffle that can separate a water flow gap is also provided in the guide cavity, and there is a height difference between the water flow gap separated by the water flow baffle and the drain outlet.

[0011] Wherein, it also includes an antibacterial sheet, which is arranged in the diversion cavity near the drain outlet.

[0012] Wherein, mesh holes are distributed on the antibacterial sheet.

[0013] Among them, the guide box seat is respectively provided with an inlet seat hole for the water inlet pipe group to pass through, a water outlet seat hole for the water outlet pipe group to pass through, and a mounting seat hole for the titanium rod assembly to pass through. The hole edge of at least one of the water inlet seat hole, the water outlet seat hole and the mounting seat hole extends outward away from the guide box cover and correspondingly forms at least one of the water inlet pipe sleeve, the water outlet pipe sleeve and the mounting pipe sleeve.

[0014] Among them, the hole edges of the water inlet seat hole, the water outlet seat hole and the installation seat hole all extend outward in the direction away from the diversion box cover and are correspondingly formed into the water inlet pipe sleeve, the water outlet pipe sleeve and the installation pipe sleeve. The water inlet pipe group is sleeved in the water inlet pipe sleeve, the water outlet pipe group is sleeved in the water outlet pipe sleeve, and the titanium rod assembly is sleeved in the installation pipe sleeve.

[0015] It also includes a sealing gasket, which is attached to the outer bottom wall of the guide box seat. The sealing gasket is also provided with a through hole for at least one of the water inlet pipe sleeve, the water outlet pipe sleeve and the installation pipe sleeve to pass through.

[0016] The diversion box cover is respectively provided with a water inlet cover hole for the water inlet pipe group to pass through, a water outlet cover hole for the water outlet pipe group to pass through, and a mounting cover hole for the titanium rod assembly to pass through.

[0017] Among them, the hole edge of at least one of the water inlet cover hole, the water outlet cover hole and the installation cover hole extends in a direction away from the guide box seat or close to the guide box seat and correspondingly forms at least one of the water inlet surrounding pipe, the water outlet surrounding pipe and the installation surrounding pipe.

[0018] The deflector box cover is further formed with a receiving groove on a side away from the deflector box seat, and the deflector box assembly further comprises a cover plate, which covers the receiving groove and has a filter hole formed on the cover plate.

[0019] Wherein, the containing tank is filled with scale inhibitor.

[0020] Among them, the water inlet pipe group includes an inner water inlet pipe and an outer water inlet pipe sleeved on the outer circumference of the inner water inlet pipe. The top of the outer water inlet pipe is closed. The cold water flows from the bottom end of the inner water inlet pipe to the top end of the inner water inlet pipe and turns under the action of the closed top end of the outer water inlet pipe and flows along the gap between the inner water inlet pipe and the outer water inlet pipe to the water outlet hole. The water outlet hole is located at the lower part of the outer water inlet pipe.

[0021] Wherein, a pipe bracket is installed on the water inlet inner pipe, and the outer peripheral edge of the pipe bracket abuts against the inner wall of the water inlet outer pipe.

[0022] In which, the water inlet pipe group also includes a water inlet positioning sleeve that is sleeved on the bottom end of the water inlet inner pipe and interference fits into the water inlet pipe sleeve, the inner wall of the water inlet pipe sleeve is formed with a water inlet limit platform, the bottom end edge of the water inlet outer pipe is turned outward to form a water inlet flange, and the water inlet positioning sleeve is formed with a water inlet positioning shoulder, and the water inlet positioning shoulder squeezes the water inlet flange at the water inlet limit platform.

[0023] Among them, the water outlet pipe group includes an inner water outlet pipe, an outer water outlet pipe sleeved on the outer periphery of the inner water outlet pipe, and a water outlet positioning sleeve sleeved on the bottom end of the inner water outlet pipe and interference fit into the water outlet pipe sleeve, the inner wall of the water outlet pipe sleeve is formed with a water outlet limit platform, the bottom end edge of the outer water outlet pipe is turned outward to form a water outlet flange, and the water outlet positioning sleeve is formed with a water outlet positioning shoulder, and the water outlet positioning shoulder squeezes the water outlet flange at the water outlet limit platform.

[0024] In which, the titanium rod assembly includes a spiral ring sleeve and a fixing seat installed in the mounting sleeve, the spiral ring sleeve is provided with a U-shaped groove with an internal thread, and the outer periphery of the mounting sleeve is formed with an external thread, or the spiral ring sleeve is provided with an external thread, and the inner periphery of the mounting sleeve is provided with an internal thread, and the inner wall of the mounting sleeve is also formed with a limiting edge, and the top end of the fixing seat is limited at the limiting edge. In the process of the internal thread and the external thread being screwed together, the spiral ring sleeve presses against the bottom end of the fixing seat so that the top end of the fixing seat presses against the limiting edge.

[0025] Among them, the titanium rod assembly also includes a titanium rod inserted into the fixing seat, and the titanium rod is fixed with a limiting plate near its bottom end. The titanium rod cooperates with the top end of the fixing seat through the limiting plate, and the bottom end of the titanium rod cooperates with the bottom end of the fixing seat through a locking piece.

[0026] Wherein, the fixing seat is also equipped with an ultraviolet emission module.

[0027] A water heater adopts the multifunctional water inlet and outlet structure of the water heater with the inner tank and welding-free nozzle.

[0028] According to the technical scheme described in the utility model, the following beneficial effects are achieved: the diversion box assembly is not only provided with an inlet pipe group and an outlet pipe group, but also with a titanium rod assembly, which provides conditions for integrating the electronic anode anti-corrosion function and the ultraviolet sterilization function; the water baffle in the diversion cavity separates the water gap, and the height difference between the water gap and the drain outlet is used to slow down the speed of cold water entering the inner tank, thereby preventing disturbance of the upper hot water layer; the diversion box seat is formed with at least one of an inlet pipe sleeve, an outlet pipe sleeve and an installation pipe sleeve to be inserted into the through hole of the inner tank, thereby avoiding welding the nozzle on the inner tank, so that when the magnesium rod is consumed during the long-term use of the machine and the user fails to replace the magnesium rod in time, the nozzle welding position or the inner tank enamel defect will corrode and leak; the diversion box cover forms a receiving groove to fill the scale inhibitor to integrate the scale inhibition function; the fixed seat is equipped with a titanium rod and an ultraviolet emission module to integrate the electronic anode anti-corrosion function and the ultraviolet sterilization function. The final product is fully functional and more competitive than products of the same price. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of a water heater with an inner tank and a welding-free nozzle with a multifunctional water inlet and outlet structure.

[0030] Figure 2 for Figure 1 The AA cross-sectional structure is shown in the front view.

[0031] Figure 3 for Figure 2 Schematic diagram of the side structure.

[0032] Figure 4 This is a schematic diagram of the multifunctional water inlet and outlet structure.

[0033] Figure 5 for Figure 4 Schematic diagram of the dorsal structure.

[0034] Figure 6 for Figure 4 Longitudinal section front view of the multifunctional water inlet and outlet structure.

[0035] Figure 7 for Figure 6 Enlarged view of middle part E.

[0036] Figure 8 for Figure 6 Enlarged view of part F in the middle.

[0037] Figure 9 Schematic diagram of the explosion of the multifunctional water inlet and outlet structure installed on the inner tank.

[0038] 1 water inlet pipe group, 10 water outlet hole, 11 water inlet inner pipe, 12 water inlet outer pipe, 12' water inlet flange, 13 pipe bracket, 14 water inlet positioning sleeve, 14' water inlet positioning shoulder, 2 water outlet pipe group, 21 water outlet inner pipe, 22 water outlet outer pipe, 22' water outlet flange, 23 water outlet positioning sleeve, 23' water outlet positioning shoulder, 3 diversion box assembly, 30 diversion cavity, 300 drain outlet, 301 water baffle, 31 diversion box seat, 32 diversion box cover, 320 receiving groove, 33 cover plate, 4 titanium rod assembly, 41 spiral ring sleeve, 42 fixed seat, 43 titanium rod, h water gap, 5 antibacterial sheet, x water inlet seat hole, y water outlet seat hole, z mounting seat hole, X water inlet pipe sleeve, Y water outlet pipe sleeve, Z mounting pipe sleeve, a water inlet cover hole, b water outlet cover hole, c mounting cover hole, A water inlet surrounding pipe, B water outlet surrounding pipe, C mounting surrounding pipe, m water inlet limit platform, n water outlet limit platform, k limit edge, p limit plate, s locking piece, 6 sealing gasket, 7 ultraviolet emission module, 8 bile hole flange. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described below with reference to the accompanying drawings:

[0040] See also Figures 1 to 9 As shown, a multifunctional water inlet and outlet structure of a water heater with an inner tank and a welding-free nozzle includes an inlet pipe group 1, an outlet pipe group 2 and a guide box assembly 3 installed in the inner tank of the water heater. The inlet pipe group 1 and the outlet pipe group 2 are respectively provided on the guide box assembly 3, and also include a titanium rod assembly 4, which is also provided on the guide box assembly 3. The guide box assembly 3 includes a guide box seat 31 and a guide box cover 32. The guide box seat 31 is covered with a guide box cover 32 to enclose a guide cavity 30, and the water outlet hole 10 of the inlet pipe group 1 is connected to the guide cavity 30. In the present application, a titanium rod assembly is also provided on the guide box assembly, which provides corresponding conditions for the subsequent integration of electronic anode anti-corrosion functions, ultraviolet sterilization functions, etc. Preferably, the guide box seat 31 and the guide box cover 32 are connected by screw fastening or by snap-fitting. Preferably, the guide box assembly 3 is made of non-metallic material.

[0041] See also Figures 3 to 6As shown in Figures 9 and 9, a drain port 300 is provided on the side of the diversion box seat 31 and / or the diversion box cover 32. Cold water entering through the water inlet pipe assembly 1 flows into the diversion chamber 30 through the water outlet 10 and is discharged into the water heater tank through the drain port 300. The diversion chamber 30 is also provided with a water flow baffle 301 that can separate a water flow gap h. There is a height difference between the water flow gap h separated by the water flow baffle 301 and the drain port 300. In the present application, a water flow baffle is formed in the diversion chamber, which can form a barrier to slow the flow rate of cold water flowing through the diversion chamber. By reducing the cold water flow rate, the cold water slowly enters the water heater tank, preventing disturbance of the upper hot water layer, and providing hot water to the user efficiently and continuously, with a high hot water output rate. In the present application, the side of the diversion box seat and / or the diversion box cover is formed with a side wall to open a drain outlet on the side wall of the diversion box seat and / or the diversion box cover. Preferably, an upwardly extending water flow baffle 301 is formed on the inner bottom wall of the diversion box seat 31, and a water flow gap h of a certain distance is formed between the water flow baffle 301 and the inner top wall of the diversion box cover 32. The drain outlet 300 is opened at, for example, the lower end of the side wall of the diversion box cover 32 (or the diversion box seat 31), so that there is a height difference between the water flow gap h between the water flow baffle 301 and the inner top wall of the diversion box cover 32 and the drain outlet 300, thereby changing the direction of water flow, which is more conducive to reducing the flow rate of cold water entering the water heater tank; in another embodiment, the diversion box cover 3 2, a downwardly extending water baffle 301 is formed on the inner top wall. A water gap h is defined between the water baffle 301 and the inner bottom wall of the guide box seat 31. The drain outlet 300 is located, for example, at the upper mid-end of the side wall of the guide box cover 32 (or the guide box seat 31). This creates a height difference between the water gap h between the water baffle 301 and the inner bottom wall of the guide box seat 31 and the drain outlet 300, thereby changing the direction of water flow and further reducing the flow rate of cold water entering the water heater tank. In most cases, the guide box assembly is installed at the bottom of the tank cavity. To further minimize disturbance of the upper hot water layer, the drain outlet is generally positioned lower, making the first embodiment more suitable. Preferably, the drain outlet 300 is elongated and disposed transversely on the side wall of the guide box seat 31 and / or the guide box cover 32.

[0042] See also Figure 6 、 9 As shown, the device also includes an antibacterial sheet 5, which is positioned within the diversion cavity 30 near the drain outlet 300. In this application, the antibacterial sheet is a silver ion antibacterial sheet, which can be assembled, for example, by snapping the antibacterial sheet into a slot provided on the diversion box seat and / or the diversion box cover. In this application, the use of the antibacterial sheet reduces the production of bacteria and other harmful substances in the water of the inner tank, providing users with a more hygienic and safe bathing experience.

[0043] See also Figure 6 、 9As shown, mesh holes are distributed on the antibacterial sheet 5. This structural design is conducive to the water passing through the antibacterial sheet evenly, and the antibacterial disinfection effect is better.

[0044] See also Figures 2 to 9 As shown, the guide box seat 31 is respectively provided with an inlet seat hole x for the water inlet pipe group 1 to pass through, a water outlet seat hole y for the water outlet pipe group 2 to pass through, and a mounting seat hole z for the titanium rod assembly 4 to pass through. The hole edge of at least one of the water inlet seat hole x, the water outlet seat hole y and the mounting seat hole z extends outward away from the guide box cover 32 and correspondingly forms at least one of the water inlet pipe sleeve X, the water outlet pipe sleeve Y and the mounting pipe sleeve Z.

[0045] See also Figures 2 to 9 As shown, the edges of the water inlet seat hole x, the water outlet seat hole y, and the installation seat hole z all extend outward in a direction away from the diversion box cover 32 and are correspondingly formed into the water inlet pipe sleeve X, the water outlet pipe sleeve Y, and the installation pipe sleeve Z. The water inlet pipe group 1 is sleeved in the water inlet pipe sleeve X, the water outlet pipe group 2 is sleeved in the water outlet pipe sleeve Y, and the titanium rod assembly 4 is sleeved in the installation pipe sleeve Z. In the present application, the water inlet pipe sleeve, the water outlet pipe sleeve, and the installation pipe sleeve on the diversion box seat are inserted into the through-holes opened in the inner liner. On the one hand, it avoids welding the nozzles on the inner liner, thereby avoiding the corrosion and porcelain explosion of the inner liner welding position caused by the welding nozzles when the magnesium rod is consumed and the user fails to replace the new magnesium rod in time. On the other hand, the diversion box seat is installed on the inner liner by inserting the water inlet pipe sleeve, the water outlet pipe sleeve, and the installation pipe sleeve into the through-holes of the inner liner, thereby improving the stability of the overall structure. In the present application, the outer circumferences of the water inlet pipe sleeve, the water outlet pipe sleeve and the installation pipe sleeve are all formed with external threads for connecting to external pipes or other accessory parts.

[0046] See also Figures 2 to 6 As shown in , 9 , it also includes a sealing gasket 6, which is attached to the outer bottom wall of the guide box seat 31. The sealing gasket 6 is also provided with a through hole for at least one of the water inlet pipe sleeve X, the water outlet pipe sleeve Y and the installation pipe sleeve Z to pass through.

[0047] See also Figures 2 to 6 As shown in Figures 9 and 9, the guide box cover 32 is respectively provided with a water inlet cover hole a for the water inlet pipe group 1 to pass through, a water outlet cover hole b for the water outlet pipe group 2 to pass through, and a mounting cover hole c for the titanium rod assembly 4 to pass through.

[0048] See also Figures 2 to 6As shown in Figures 9 and 9, the edge of at least one of the water inlet cover hole a, the water outlet cover hole b, and the installation cover hole c extends in a direction away from the guide box seat 31 or in a direction close to the guide box seat 31, and is correspondingly formed into at least one of the water inlet enclosure pipe A, the water outlet enclosure pipe B, and the installation enclosure pipe C. Preferably, the edges of the water inlet cover hole a, the water outlet cover hole b, and the installation cover hole c all extend in a direction away from the guide box seat 31 or in a direction close to the guide box seat 31, and are correspondingly formed into the water inlet enclosure pipe A, the water outlet enclosure pipe B, and the installation enclosure pipe C, thereby improving the stability of the water inlet pipe group 1, the water outlet pipe group 2, and the titanium rod assembly 4 subsequently inserted into the water inlet enclosure pipe A, the water outlet enclosure pipe B, and the installation enclosure pipe C.

[0049] See also Figure 3 、 6 As shown in Figures 9 and 9, the diversion box cover 32 further includes a receiving slot 320 on a side facing away from the diversion box seat 31. The diversion box assembly 3 also includes a cover plate 33 that seals the receiving slot 320 and has filter holes formed therein. In the present application, the cover plate also includes inlet and outlet plate holes, as well as mounting plate holes, for the inlet and outlet pipe assemblies and the titanium rod assembly to pass through. Preferably, the cover plate 33 is connected to the diversion box cover 32 by screws or by snap-fitting.

[0050] See also Figure 3 、 6 As shown in FIG9 , the holding tank 320 is filled with an antiscalant. In the present application, the use of the antiscalant reduces the scale generated by the water in the inner tank, and the user has a more hygienic and safe bathing experience.

[0051] See also Figure 2 、 3 As shown in Figures 6 and 7, the water inlet pipe group 1 includes an inner water inlet pipe 11 and an outer water inlet pipe 12 that is sleeved on the outer circumference of the inner water inlet pipe 11. The top of the outer water inlet pipe 12 is closed. Cold water flows from the bottom end of the inner water inlet pipe 11 to the top of the inner water inlet pipe 11 and turns under the action of the closed top of the outer water inlet pipe 12 to flow along the gap between the inner water inlet pipe 11 and the outer water inlet pipe 12 to the water outlet 10. The water outlet 10 is located at the lower part of the outer water inlet pipe 12. Preferably, the inner water inlet pipe 11 is made of PPR pipe that is resistant to high temperature, corrosion-resistant, lightweight, high-strength, and anti-scaling. More preferably, the length of the inner water inlet pipe 11 is not less than 20 mm and 800 mm to act as an electric shock wall. Preferably, in order to improve the overall mechanical strength of the water inlet pipe group 1 and keep the inner water inlet pipe 11 upright and not skewed, the outer water inlet pipe 12 is made of stainless steel pipe.

[0052] See also Figure 2 、 3As shown in Figures 6 and 9, a pipe bracket 13 is installed on the water inlet inner pipe 11, and the outer peripheral edge of the pipe bracket 13 abuts against the inner wall of the water inlet outer pipe 12. Preferably, the pipe bracket 13 is installed at the top of the water inlet inner pipe 11. The pipe bracket 13 is assembled using a cross-shaped "ㄇ" fastener and is clamped on the side wall of the top of the water inlet inner pipe 11. The cross-shaped structure not only forms a hollow structure to allow cold water to flow from the top of the water inlet inner pipe to the gap between the water inlet inner pipe and the water inlet outer pipe, but also the mutually buckled "ㄇ" fasteners are more convenient to clamp with the side wall of the top of the water inlet inner pipe. The structure is simple and exquisite, and the stability between the water inlet inner pipe and the water inlet outer pipe is improved, preventing the water inlet inner pipe and the water inlet outer pipe from being misaligned under the impact of cold water.

[0053] See also Figure 2 、 3 As shown in Figures 6 and 9, the water inlet pipe assembly 1 also includes a water inlet positioning sleeve 14 that is sleeved on the bottom end of the water inlet inner pipe 11 and fits into the water inlet pipe sleeve X with an interference fit. The inner wall of the water inlet pipe sleeve X is formed with a water inlet limit platform m. The bottom edge of the water inlet outer pipe 12 is turned outward to form a water inlet flange 12'. The water inlet positioning sleeve 14 is formed with a water inlet positioning shoulder 14'. The water inlet positioning shoulder 14' squeezes the water inlet flange 12' at the water inlet limit platform m. Preferably, a sealing ring is provided between the water inlet positioning shoulder 14' and the water inlet flange 12' to prevent water leakage. Preferably, in order to further enhance the stability between the water inlet inner pipe 11 and the water inlet outer pipe 12, the water inlet positioning sleeve 14 adopts a T-shaped pipe sleeve structure.

[0054] See also Figure 2 、 3 As shown in Figures 6 and 9, the water outlet pipe group 2 includes an inner water outlet pipe 21, an outer water outlet pipe 22 sleeved on the outer periphery of the inner water outlet pipe 21, and a water outlet positioning sleeve 23 sleeved on the bottom end of the inner water outlet pipe 11 and inserted into the water outlet pipe sleeve Y with interference fit. The inner wall of the water outlet pipe sleeve Y is formed with a water outlet limit platform n, the bottom end edge of the outer water outlet pipe 22 is turned outward to form a water outlet flange 22', and the water outlet positioning sleeve 23 is formed with a water outlet positioning shoulder 23', which squeezes the water outlet flange 22' onto the water outlet limit platform n. Preferably, a sealing ring is provided between the water outlet positioning shoulder 23' and the water outlet flange 22' to prevent water leakage. Preferably, in order to further enhance the stability between the inner water outlet pipe 21 and the outer water outlet pipe 22, the water outlet positioning sleeve 23 adopts a T-shaped pipe sleeve structure. Preferably, the inner outlet pipe 21 is made of PPR pipe, which is heat-resistant, corrosion-resistant, lightweight, high-strength, and anti-scaling. More preferably, the inner outlet pipe 21 is at least 20 mm to 800 mm long to act as an electric shock barrier. Preferably, to improve the overall mechanical strength of the outlet pipe assembly 2 and keep the inner outlet pipe 21 upright, the outer outlet pipe 22 is made of stainless steel.

[0055] See also Figures 1 to 6As shown in Figures 9 and 9, the titanium rod assembly 4 includes a spiral ring 41 and a fixing seat 42 that is installed in the installation sleeve Z. The spiral ring 41 is provided with a U-shaped groove with an internal thread, and the outer periphery of the installation sleeve Z is formed with an external thread. Alternatively, the spiral ring 41 is provided with an external thread, and the inner periphery of the installation sleeve Z is provided with an internal thread. The inner wall of the installation sleeve Z also forms a limiting edge k. The top end of the fixing seat 42 is limited at the limiting edge k. During the process of screwing the internal and external threads together, the spiral ring 41 abuts against the bottom end of the fixing seat 42 so that the top end of the fixing seat 42 abuts against the limiting edge k. Preferably, a sealing ring is provided between the top end of the fixing seat 42 and the limiting edge k to prevent water leakage.

[0056] See also Figure 6 、 9 As shown, the titanium rod assembly 4 also includes a titanium rod 43 that is inserted into the fixing seat 42. The titanium rod 43 is fixed with a limiting plate p near its bottom end. The titanium rod 43 cooperates with the top of the fixing seat 42 through the limiting plate p, and the bottom end of the titanium rod 43 cooperates with the bottom end of the fixing seat 42 through the locking member s. Preferably, the bottom end of the titanium rod 43 is provided with an external thread, and the locking member s is a nut. When the nut and the external thread at the bottom end of the titanium rod 43 are screwed together and tightened, the limiting plate p is forced to press against the top of the fixing seat 42. Preferably, a sealing ring is provided between the top of the fixing seat 42 and the limiting plate p to prevent water leakage. In this application, the titanium rod plays the role of anode corrosion protection, the water quality in the liner is cleaner and more hygienic, and the user experience is better.

[0057] See also Figure 2 、 3 As shown in Figures 6 and 9, an ultraviolet emitting module 7 is also mounted on the fixing base 42. In the present application, the use of the ultraviolet emitting module reduces the generation of harmful substances such as bacteria and viruses in the water in the inner tank, and the user has a more hygienic and safe bathing experience.

[0058] A water heater adopts the multifunctional water inlet and outlet structure of the water heater with the above-mentioned inner tank welding-free nozzle. In the present application, only a through hole needs to be opened on the inner tank without welding the nozzle separately. The water inlet pipe sleeve, the water outlet pipe sleeve and the installation pipe sleeve are respectively passed through the through hole, thereby avoiding the phenomenon of porcelain explosion at the welding position of the inner tank welding nozzle. Even if there are differences in water quality in the area where the water heater is used and the magnesium rod is consumed and not replaced with a new magnesium rod, it will not cause serious corrosion to the welding position of the inner tank or the position where the enamel defects exist, resulting in porcelain explosion, thereby extending the service life of the product. Preferably, the hole edge of the through hole extends outward to form a tank hole flange 8, thereby enhancing the mechanical strength of the inner tank through hole. In the present application, in order to more securely install the deflector box assembly 3, a nail hole can be opened on the inner liner, and a screw can be inserted through the nail hole of the inner liner and extended into the connecting hole of the nail seat integrally formed on the deflector box seat 31. In order to facilitate mold opening and further enhance the mechanical strength of the water baffle, the nail seat is integrally formed with the water baffle 301, and / or, a bolt is assembled on the deflector box seat 31 or a bolt is integrally formed therewith, the bolt passes through the bolt hole opened on the inner liner, and then a nut is used to tighten and lock it to more securely install the deflector box assembly 3.

[0059] Although the specific embodiments of the present invention have been described above, those skilled in the art may modify them without departing from the spirit and principles of the present invention. The scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A multifunctional water inlet and outlet structure for a water heater with a weld-free nozzle inside the inner tank, comprising an inlet pipe assembly, an outlet pipe assembly, and a flow guide box assembly installed in the inner tank of the water heater, characterized in that: The water inlet pipe group and the water outlet pipe group are respectively arranged on the diversion box assembly, and also include a titanium rod assembly, which is also arranged on the diversion box assembly. The diversion box assembly includes a diversion box seat and a diversion box cover. The diversion box seat is covered with the diversion box cover to form a diversion cavity, and the water outlet hole of the water inlet pipe group is connected to the diversion cavity.

2. The multifunctional water inlet and outlet structure of the water heater with a welding-free nozzle in the inner tank according to claim 1 is characterized in that: A drain outlet is provided on the side of the guide box seat and / or the guide box cover, and the cold water entering through the water inlet pipe group flows into the guide cavity through the water outlet hole and is discharged into the water heater inner tank through the drain outlet. A water flow baffle that can separate a water flow gap is also provided in the guide cavity, and there is a height difference between the water flow gap separated by the water flow baffle and the drain outlet.

3. The multifunctional water inlet and outlet structure of the water heater with a welding-free nozzle inside the tank according to claim 2 is characterized in that: It also includes an antibacterial sheet, which is arranged in the diversion cavity near the drain outlet.

4. The multifunctional water inlet and outlet structure of the water heater with a welding-free nozzle inside the tank according to claim 3 is characterized by: Mesh holes are distributed on the antibacterial sheet.

5. The multifunctional water inlet and outlet structure of a water heater with an inner tank and a welding-free nozzle according to any one of claims 1 to 4, characterized in that: The guide box seat is respectively provided with an inlet seat hole for the inlet pipe group to pass through, a water outlet seat hole for the outlet pipe group to pass through, and a mounting seat hole for the titanium rod assembly to pass through. The hole edge of at least one of the inlet seat hole, the outlet seat hole and the mounting seat hole extends outward away from the guide box cover and correspondingly forms at least one of the inlet pipe sleeve, the outlet pipe sleeve and the mounting pipe sleeve.

6. The multifunctional water inlet and outlet structure of the water heater with a welding-free nozzle in the inner tank according to claim 5 is characterized in that: The hole edges of the water inlet seat hole, the water outlet seat hole and the mounting seat hole all extend outward in the direction away from the diversion box cover and are correspondingly formed into the water inlet pipe sleeve, the water outlet pipe sleeve and the mounting pipe sleeve. The water inlet pipe group is sleeved in the water inlet pipe sleeve, the water outlet pipe group is sleeved in the water outlet pipe sleeve, and the titanium rod assembly is sleeved in the mounting pipe sleeve.

7. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle inside the tank according to claim 5, characterized in that: It also includes a sealing gasket, which is attached to the outer bottom wall of the guide box seat. The sealing gasket is also provided with a through hole for at least one of the water inlet pipe sleeve, the water outlet pipe sleeve and the installation pipe sleeve to pass through.

8. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle inside the tank according to claim 1, characterized in that: The diversion box cover is respectively provided with a water inlet cover hole for the water inlet pipe group to pass through, a water outlet cover hole for the water outlet pipe group to pass through, and a mounting cover hole for the titanium rod assembly to pass through.

9. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle inside the tank according to claim 8, characterized in that: The hole edge of at least one of the water inlet cover hole, the water outlet cover hole and the installation cover hole extends in a direction away from the guide box seat or close to the guide box seat and correspondingly forms at least one of the water inlet surrounding pipe, the water outlet surrounding pipe and the installation surrounding pipe.

10. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle in an inner tank according to claim 1, characterized in that: The deflector box cover is further formed with a receiving groove on a side away from the deflector box seat. The deflector box assembly further comprises a cover plate, which covers the receiving groove and has a filter hole formed on the cover plate.

11. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle in an inner tank according to claim 10, characterized in that: The containing tank is filled with scale inhibitor.

12. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle inside the tank according to claim 6, characterized in that: The water inlet pipe group includes an inner water inlet pipe and an outer water inlet pipe sleeved on the outer circumference of the inner water inlet pipe. The top end of the outer water inlet pipe is closed. Cold water flows from the bottom end of the inner water inlet pipe to the top end of the inner water inlet pipe and turns under the action of the closed top end of the outer water inlet pipe and flows along the gap between the inner water inlet pipe and the outer water inlet pipe to the water outlet hole. The water outlet hole is located at the lower part of the outer water inlet pipe.

13. The multifunctional water inlet and outlet structure of a water heater with an inner tank and a welding-free nozzle according to claim 12, characterized in that: A pipe bracket is installed on the water inlet inner pipe, and the outer peripheral edge of the pipe bracket abuts against the inner wall of the water inlet outer pipe.

14. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle inside the tank according to claim 12, characterized in that: The water inlet pipe group also includes a water inlet positioning sleeve that is sleeved on the bottom end of the water inlet inner pipe and fits into the water inlet pipe sleeve with an interference fit. The inner wall of the water inlet pipe sleeve is formed with a water inlet limit platform. The bottom end edge of the water inlet outer pipe is turned outward to form a water inlet flange. The water inlet positioning sleeve is formed with a water inlet positioning shoulder, and the water inlet positioning shoulder squeezes the water inlet flange at the water inlet limit platform.

15. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle inside the tank according to claim 6, characterized in that: The water outlet pipe group includes an inner water outlet pipe, an outer water outlet pipe sleeved around the outer periphery of the inner water outlet pipe, and a water outlet positioning sleeve sleeved at the bottom end of the inner water outlet pipe and interference fit into the water outlet pipe sleeve. A water outlet limit platform is formed on the inner wall of the water outlet pipe sleeve. The bottom end edge of the outer water outlet pipe is turned outward to form a water outlet flange. The water outlet positioning sleeve is formed with a water outlet positioning shoulder, and the water outlet positioning shoulder squeezes the water outlet flange onto the water outlet limit platform.

16. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle inside the tank according to claim 6, characterized in that: The titanium rod assembly includes a spiral ring sleeve and a fixing seat installed in the mounting sleeve, the spiral ring sleeve is provided with a U-shaped groove with an internal thread, and the outer periphery of the mounting sleeve is formed with an external thread, or the spiral ring sleeve is provided with an external thread, and the inner periphery of the mounting sleeve is provided with an internal thread, and the inner wall of the mounting sleeve is also formed with a limiting edge, and the top end of the fixing seat is limited at the limiting edge. In the process of the internal thread and the external thread being screwed together, the spiral ring sleeve presses against the bottom end of the fixing seat so that the top end of the fixing seat presses against the limiting edge.

17. The multifunctional water inlet and outlet structure of a water heater with a welding-free nozzle in an inner tank according to claim 16, characterized in that: The titanium rod assembly also includes a titanium rod inserted into the fixing seat. The titanium rod is fixed with a limiting plate near its bottom end. The titanium rod cooperates with the top end of the fixing seat through the limiting plate, and the bottom end of the titanium rod cooperates with the bottom end of the fixing seat through a locking piece.

18. The multifunctional water inlet and outlet structure of a water heater with an inner tank and a welding-free nozzle according to claim 16, characterized in that: An ultraviolet emitting module is also installed on the fixing seat.

19. A water heater, characterized in that: A multifunctional water inlet and outlet structure for a water heater using the inner tank welding-free nozzle described in any one of claims 1 to 18.

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