Water pipe assembly and water heater

Abstract

The utility model belongs to the technical field of water heaters, and particularly discloses a water pipe assembly and a water heater. The water pipe assembly comprises a shell, a rotor positioning sleeve and an electricity-proof wall body. The shell is provided with a water through hole and a mounting hole which are communicated, and a positioning step surface is formed at the communication part of the mounting hole and the water through hole; the rotor positioning sleeve is inserted into the mounting hole in an interference manner, the first end of the rotor positioning sleeve abuts against the positioning step surface, the rotor positioning sleeve is provided with a mounting cavity with two through ends, a limiting step is convexly arranged on the inner wall of one end, far away from the positioning step surface, of the mounting cavity, and the mounting cavity is used for mounting a rotor assembly; the electricity-proof wall body is provided with a water passing channel, the first end of the electricity-proof wall body is inserted into the installation cavity in an interference mode, the electricity-proof wall body abuts against the rotor positioning sleeve, the water passing hole, the installation cavity and the water passing channel are sequentially communicated, and the hole diameter of the water passing hole is smaller than the inner diameter of the installation cavity. According to the water pipe assembly and the water heater, the disassembly, assembly, maintenance and replacement convenience of the water pipe assembly and the rotor assembly can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a water pipe assembly and a water heater. Background Art

[0002] An electric water heater is a relatively common hot water device in modern household life, which can better meet the user's hot water demand.

[0003] To prevent electric shock accidents caused by electric leakage of the electric water heater into the water body, the existing electric water heaters usually set an electric shock prevention wall structure at the inlet pipe and the outlet pipe to extend the water inlet and outlet paths, so as to reduce the electric leakage risk by using the resistance of the water body itself. In the prior art, the inlet and outlet water pipes with the electric shock prevention wall structure usually include a screw head and a water pipe. Copper joints are injection molded and embedded at both ends of the screw head, and the water pipe is hot melt welded into the screw head, and an electric shock prevention wall structure is formed at the water pipe.

[0004] For the inlet water pipe provided by the prior art, since the water pipe and the screw head are welded into a whole, it is not conducive to the disassembly and assembly of the inlet and outlet water pipes on the electric water heater, and at the same time, it will also cause higher maintenance and replacement costs of the inlet and outlet water pipes; at the same time, in order to monitor the water inlet and outlet flow rates, a flow sensor needs to be set on the inlet pipe or the outlet pipe. However, due to the structural setting of the existing inlet and outlet water pipes, the rotor assembly of the flow sensor needs to be installed into the screw head before the water pipe is welded to the screw head, resulting in that after the water pipe is welded to the screw head, the rotor assembly cannot be disassembled, assembled, overhauled and replaced separately, further increasing the maintenance and replacement costs of the inlet and outlet water pipes. Summary of the Utility Model

[0005] One of the technical problems to be solved by the utility model is to provide a water pipe assembly, which can effectively solve the problems that the rotor assembly of the existing water pipe assembly is not easy to disassemble, and the disassembly, assembly, maintenance and replacement of the water pipe assembly are difficult, and improve the convenience of disassembly, assembly, maintenance and repair of the water pipe assembly.

[0006] Another technical problem to be solved by the utility model is to provide a water heater, which can effectively solve the problems that the maintenance and overhaul of the existing water heater are difficult due to the difficult disassembly, assembly, maintenance and repair of the water pipe assembly, improve the convenience of overhaul and maintenance of the water heater, and reduce the use cost of the water heater.

[0007] The above first technical problem is solved by the following technical solutions:

[0008] A water pipe assembly, comprising:

[0009] A housing having a communicating water passing hole and an installation hole, the water passing hole and the installation hole respectively penetrating opposite ends of the housing, and a positioning step surface facing the installation hole is formed at the communication part of the installation hole and the water passing hole;

[0010] The rotor positioning sleeve is press-fitted into the installation hole and its first end abuts against the positioning step surface. The rotor positioning sleeve has an installation cavity that penetrates through both ends. An inner wall of one end of the installation cavity away from the positioning step surface protrudes with a limiting step. The inner diameter of the water passing hole is smaller than the inner diameter of the installation cavity. The installation cavity is used for installing the rotor assembly;

[0011] The anti-electricity wall body has a water passing channel. The first end of the anti-electricity wall body is press-fitted into the end of the installation cavity away from the water passing hole, and the anti-electricity wall body abuts against the rotor positioning sleeve. The water passing hole, the installation cavity and the water passing channel are sequentially communicated.

[0012] Compared with the background technology, the water pipe assembly of the present utility model has the beneficial effects as follows: Since the rotor positioning sleeve is press-fitted into the installation hole of the housing, and the first end of the anti-electricity wall body is press-fitted into the installation cavity, the housing, the rotor positioning sleeve and the anti-electricity wall body can be processed and assembled separately, reducing the processing difficulty; At the same time, when assembling the water pipe assembly, the rotor positioning sleeve can be first inserted into the installation hole, and then the anti-electricity wall body is press-fitted into the installation cavity so that the rotor positioning sleeve is clamped between the positioning step surface and the anti-electricity wall body, and the assembly can be realized. The assembly is simple and efficient; Since the rotor assembly is located between the positioning step surface and the limiting step, the installation stability and reliability of the rotor assembly in the water pipe assembly can be ensured. And when disassembling the water pipe assembly, pulling out the anti-electricity wall body from the installation cavity can extract the rotor positioning sleeve from the housing, which is conducive to realizing the disassembly, maintenance and replacement of some parts of the water pipe assembly. At the same time, it is also conducive to realizing the inspection and replacement of the rotor assembly installed in the rotor positioning sleeve, improving the convenience of maintenance and replacement, and reducing the maintenance and replacement costs; Furthermore, both the anti-electricity wall body and the rotor positioning sleeve are press-fitted with the housing, which can ensure the installation firmness and sealing performance, and thus can improve the detection accuracy.

[0013] In one embodiment, the installation cavity includes a main cavity part and a plug-in cavity part. The main cavity part is located between the plug-in cavity part and the water passing hole, and the inner diameter of the main cavity part is larger than the inner diameter of the plug-in cavity part and the inner diameter of the water passing hole. The main cavity part is used for installing the rotor assembly. The connection between the main cavity part and the plug-in cavity part forms the limiting step. The first end of the anti-electricity wall body is press-fitted into the plug-in cavity part;

[0014] And / or, a limiting ring part protrudes from the cavity wall of the installation cavity. An annular groove is formed on the outer side wall of the first end of the anti-electricity wall body, and the annular groove penetrates through the end face of the first end of the anti-electricity wall body. The water pipe assembly further includes a sealing ring, and the sealing ring is extruded between the bottom of the annular groove and the limiting ring part.

[0015] In one embodiment, the rotor positioning sleeve includes a coaxially connected mounting sleeve portion and a plugging sleeve portion. The outer diameter of the mounting sleeve portion is larger than that of the plugging sleeve portion. The mounting sleeve portion is press-fitted into the mounting hole and abuts against the positioning step surface. The inner cavity of the mounting sleeve portion forms the main cavity portion, and the inner cavity of the plugging sleeve portion forms the plugging cavity portion.

[0016] In one embodiment, the mounting hole is a tapered hole. The small end of the tapered hole communicates with the water passage hole, and the rotor positioning sleeve is in interference fit with the small end of the tapered hole.

[0017] And / or, a convex ring portion is protruded on the outer side wall of the anti-electricity wall body. The convex ring portion is located outside the rotor positioning sleeve and is in interference fit with the mounting hole.

[0018] In one embodiment, a first external thread section is provided on the outer side wall of one end of the housing away from the water passage hole. A limiting convex portion is protruded on the outer side wall of the housing, and the limiting convex portion is spaced from the first external thread section.

[0019] In one embodiment, the anti-electricity wall body includes:

[0020] An inner pipe, the first end of the inner pipe is press-fitted into the mounting cavity. The second end of the inner pipe has a communicating water port, and the inner cavity of the inner pipe forms a water inlet channel.

[0021] An outer pipe, sleeved outside the inner pipe. A water passing gap is formed between the inner side wall of the inner pipe and the outer side wall of the outer pipe. One end of the water passing gap away from the housing is closed. A water outlet communicating with the water passing gap is provided at one end of the outer pipe close to the housing. The water passing gap communicates with the water inlet channel through the communicating water port. The water passing channel includes the communicating water inlet channel and the water passing gap.

[0022] In one embodiment, the water pipe assembly further includes a water guiding sleeve. The water guiding sleeve is sleeved outside the outer pipe, and a water guiding cavity is formed by enclosing the water guiding sleeve and the outer pipe. The opening of the water guiding cavity faces the housing, and the water outlet communicates with the water guiding cavity.

[0023] In one embodiment, the anti-electricity wall body includes an inner pipe and an outer pipe wrapped outside the inner pipe. The inner pipe has the water passing channel with both ends open. The inner pipe is made of plastic material, and the outer pipe is made of metal material. The first end of the inner pipe is press-fitted into the mounting cavity, and the outer pipe is located outside the rotor positioning sleeve.

[0024] The above second technical problem is solved by the following technical solutions:

[0025] A water heater includes an inner tank and a flow sensor. An installation opening is formed in the wall of the inner tank. The water pipe assembly as described above is also included. The outer shell is detachably installed at the installation opening. The anti-electricity wall body extends into the inner part of the inner tank, and the rotor assembly of the flow sensor is installed in the installation cavity.

[0026] Compared with the background art, the water heater of the present utility model has the beneficial effects that by adopting the above water heater, the disassembly, maintenance and replacement convenience of the water pipe assembly and the rotor assembly in the water heater can be improved, the use cost of the water heater can be reduced, and the use safety of the water heater can be improved.

[0027] In one embodiment, an installation seat is arranged at the installation opening. The installation seat has an installation cavity with an opening facing downward, and an avoidance through hole is formed in the bottom of the installation cavity.

[0028] The upper end of the outer shell is installed in the installation cavity. A sealing member is pressed between the upper end of the outer shell and the bottom of the installation cavity. A limiting convex portion is convexly provided on the outer side wall of the outer shell, and the limiting convex portion abuts against the lower end face of the installation seat. The anti-electricity wall body is inserted into the inner part of the inner tank through the avoidance through hole. Description of the Drawings

[0029] Figure 1 It is a structural cross-sectional view of the water pipe assembly provided in Embodiment 1 of the present utility model;

[0030] Figure 2 For Figure 1 The partial enlarged view at I in

[0031] Figure 3 It is a partial structural schematic diagram of the water pipe assembly provided in Embodiment 1 of the present utility model;

[0032] Figure 4 For Figure 3 The partial enlarged view at J in

[0033] Figure 5 It is a structural cross-sectional view of the water pipe assembly provided in Embodiment 2 of the present utility model;

[0034] Figure 6 It is a partial structural schematic diagram of the water pipe assembly provided in Embodiment 2 of the present utility model;

[0035] Figure 7 It is a structural schematic diagram of the water heater provided in Embodiment 3 of the present utility model;

[0036] Figure 8 For Figure 7 The partial enlarged view at K in

[0037] Figure 9 ForFigure 7 Partial enlarged view at L in the middle

[0038] Label description:

[0039] 100, water pipe assembly; 100a, inlet water pipe assembly; 100b, outlet water pipe assembly; 200, inner tank; 300, mounting base; 301, main cylinder part; 302, limiting part; 400, seal

[0040] 1, housing; 11, water through hole; 12, mounting hole; 13, limiting convex part; 14, positioning step surface

[0041] 2, rotor positioning sleeve; 21, mounting sleeve part; 22, plug-in sleeve part; 23, limiting ring part; 24, mounting cavity; 241, main cavity part; 242, plug-in cavity part; 25, limiting step

[0042] 3, anti-electricity wall body; 3a, inlet anti-electricity wall; 3b, outlet anti-electricity wall; 31, inner pipe; 311, main pipe part; 3111, connecting water port; 312, convex ring part; 313, positioning ring part; 314, plug-in pipe part; 32, outer pipe; 321, water outlet; 33, sealing end; 331, sealing plate part; 332, inner sealing part; 333, outer sealing part; 34, water through channel; 341, inlet channel; 342, water through gap

[0043] 4, sealing ring

[0044] 5, water guide sleeve; 51, water guide cavity; 52, water outlet opening Specific implementation mode

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0046] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0047] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0048] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] Embodiment 1

[0050] As Figures 1 to 4 shown, this embodiment provides a water pipe assembly 100, which can be applied to a water heater to achieve anti-electric leakage setting of the water pipe assembly 100 while the water heater is in water inlet or outlet, and improve the convenience of loading, unloading, maintenance, and replacement of the water pipe assembly 100.

[0051] Specifically, the water pipe assembly 100 includes a housing 1, a rotor positioning sleeve 2, and an anti-electricity wall body 3. Among them, the housing 1 has a water passing hole 11 and a mounting hole 12 that are connected and communicated. The water passing hole 11 and the mounting hole 12 penetrate through the opposite ends of the housing 1 respectively. A positioning step surface 14 facing the mounting hole 12 is formed at the connection of the mounting hole 12 and the water passing hole 11; the rotor positioning sleeve 2 is press-fitted into the mounting hole 12 and its first end abuts against the positioning step surface 14. The rotor positioning sleeve 2 has a mounting cavity 24 that penetrates through both ends. The inner diameter of the mounting cavity 24 is larger than the inner diameter of the water passing hole 11. A limiting step 25 is convexly provided on the inner wall of one end of the mounting cavity 24 away from the positioning step surface 14. The mounting cavity 24 is used to mount the rotor assembly of the flow sensor; the anti-electricity wall body 3 has a water passing channel 34. The first end of the anti-electricity wall body 3 is press-fitted into the end of the mounting cavity 24 away from the water passing hole 11, and the anti-electricity wall body 3 abuts against the rotor positioning sleeve 2. The water passing hole 11, the mounting cavity 24, and the water passing channel 34 are connected in sequence.

[0052] The water pipe assembly 100 provided in this embodiment enables the housing 1, the rotor positioning sleeve 2, and the electric shock prevention wall body 3 to be separately processed and assembled because the rotor positioning sleeve 2 is press-fitted into the mounting hole 12 of the housing 1, and the first end of the electric shock prevention wall body 3 is press-fitted into the mounting cavity 24, reducing the processing difficulty. At the same time, when assembling the water pipe assembly 100, the rotor positioning sleeve 2 can be first inserted into the mounting hole 12, and then the electric shock prevention wall body 3 is press-fitted into the mounting cavity 24 so that the rotor positioning sleeve 2 is clamped between the positioning step surface 14 and the electric shock prevention wall body 3, achieving assembly simply and with high efficiency. Since the rotor assembly is located between the positioning step surface 14 and the limiting step 25, the installation stability and reliability of the rotor assembly in the water pipe assembly 100 can be ensured. When disassembling the water pipe assembly 100, by pulling out the electric shock prevention wall body 3 from the mounting cavity 24, the rotor positioning sleeve 2 can be withdrawn from the housing 1, which is conducive to the disassembly, maintenance, and replacement of some components of the water pipe assembly 100. At the same time, it is also conducive to the inspection and replacement of the rotor assembly installed in the rotor positioning sleeve 2, improving the convenience of maintenance and replacement and reducing the maintenance and replacement costs.

[0053] In one embodiment, the inner diameter of the water through hole 11 is smaller than the inner diameter of the mounting hole 12, and the water through hole 11 and the mounting hole 12 are coaxially arranged to facilitate the processing of the water through hole 11 and the mounting hole 12 and reduce the processing difficulty of the housing 1. In other embodiments, the inner diameters of the mounting hole 12 and the water through hole 11 can be the same, and a convex ring structure is convexly provided on the inner wall of the housing 1. The convex ring structure is located between the mounting hole 12 and the water through hole 11, and the end surface of the convex ring structure forms the positioning step surface 14.

[0054] To improve the installation convenience of the rotor assembly in the mounting cavity 24, in one embodiment, the mounting cavity 24 includes a main cavity portion 241 and a plug-in cavity portion 242 that are coaxially connected. The main cavity portion 241 is located between the water through hole 11 and the plug-in cavity portion 242, and the inner diameter of the main cavity portion 241 is larger than the inner diameter of the plug-in cavity portion 242 and the inner diameter of the water through hole 11. The connection between the main cavity portion 241 and the plug-in cavity portion 242 forms the limiting step 25. The main cavity portion 241 is used to install the rotor assembly, and the first end of the electric shock prevention wall body 3 is press-fitted into the plug-in cavity portion 242. This setting enables the rotor assembly to be loaded into the main cavity portion 241 from the side of the main cavity portion 241 away from the plug-in cavity portion 242, facilitating the processing and forming of the limiting step 25 and simplifying the structure of the rotor positioning sleeve 2. In other embodiments, a convex ring can also be convexly provided on the inner wall of the mounting cavity 24, and the end surface of the convex ring forms the limiting step 25.

[0055] To simplify the structure of the rotor positioning sleeve 2, the rotor positioning sleeve 2 includes a coaxially connected mounting sleeve portion 21 and a plugging sleeve portion 22. The inner cavity of the mounting sleeve portion 21 forms a main cavity portion 241, and the inner cavity of the plugging sleeve portion 22 forms a plugging cavity portion 242. The outer diameter of the mounting sleeve portion 21 is larger than that of the plugging sleeve portion 22, and the mounting sleeve portion 21 is press-fitted into the mounting hole 12. This can reduce the wall thickness of the rotor positioning sleeve 2 at the plugging cavity portion 242, reduce the overall weight of the rotor positioning sleeve 2, and facilitate the machining of the rotor positioning sleeve 2, reducing the machining cost of the rotor positioning sleeve 2. At the same time, this setting makes there be a gap between the plugging sleeve portion 22 and the hole wall of the mounting hole 12, which is conducive to the extraction of the rotor positioning sleeve 2 through this gap when disassembling the water pipe assembly 100.

[0056] In one embodiment, the mounting hole 12 is a tapered hole, the small end of the tapered hole faces the water passing hole 11, and the rotor positioning sleeve 2 is in interference fit with the small end of the tapered hole. The maximum outer diameter of the rotor positioning sleeve 2 is smaller than the inner diameter of the tapered hole. This is conducive to guiding the rotor positioning sleeve 2 to be inserted into the mounting hole 12, realizing the tight plugging of the rotor positioning sleeve 2 in the tapered hole, and avoiding water leakage at the joint between the rotor positioning sleeve 2 and the housing 1.

[0057] Furthermore, the taper of the tapered hole is greater than 0° and less than 5°, so as to increase the fitting tightness between the housing 1 and the rotor positioning sleeve 2 on the basis of the unchanged length of the housing 1, and avoid problems such as the overall structural compactness becoming poor and the risk of water leakage increasing due to a large gap between the housing 1 and the rotor positioning sleeve 2.

[0058] A sealing ring 4 is arranged between the outer side of the first end of the electric shock prevention wall body 3 and the rotor positioning sleeve 2 to enhance the seal at the joint between the rotor positioning sleeve 2 and the electric shock prevention wall body 3, further reducing the probability of water leakage and improving the use reliability of the water pipe assembly 100.

[0059] In one embodiment, a limiting ring portion 23 protrudes from the cavity wall of the mounting cavity 24. An annular groove is formed on the outer side wall of the first end of the electric shock prevention wall body 3, and the annular groove penetrates through the end face of the first end of the electric shock prevention wall body 3. The sealing ring 4 is pressed between the bottom of the annular groove and the limiting ring portion 23 to achieve axial sealing at the joint between the electric shock prevention wall body 3 and the rotor positioning sleeve 2. Furthermore, the sealing ring 4 is also squeezed between the groove wall of the annular groove and the cavity wall of the mounting cavity 24 to achieve radial sealing at the joint between the electric shock prevention wall body 3 and the rotor positioning sleeve 2, enhancing the sealing effect.

[0060] That is, the above setting makes the electric shock prevention wall body 3 press against the limiting ring portion 23 by squeezing the sealing ring 4 when assembling, that is, pressing against the rotor positioning sleeve 2. Specifically, the limiting ring portion 23 protrudes from the cavity wall of the plugging cavity portion 242.

[0061] In another embodiment, an annular sealing groove can also be directly formed on the outer side wall of the first end of the electric shock prevention wall body 3, and the sealing ring 4 is accommodated in the annular sealing groove and is pressed between the cavity wall of the installation cavity 24 and the groove wall of the annular sealing groove. In other embodiments, a positioning structure can be provided on the outer side wall of the electric shock prevention wall body 3. The positioning structure is located outside the installation cavity 24 and abuts against the end face of the rotor positioning sleeve 2 to realize the pressing of the electric shock prevention wall body 3 against the rotor positioning sleeve 2.

[0062] In one embodiment, a convex ring portion 312 protrudes from the outer side wall of the electric shock prevention wall body 3. The convex ring portion 312 is located outside the rotor positioning sleeve 2 and is in interference fit with the installation hole 12. This setting can prevent water outside the housing 1 from entering the installation hole 12 through the gap between the electric shock prevention wall body 3 and the hole wall of the installation hole 12; at the same time, this setting can enhance the overall installation stability and reliability of the electric shock prevention wall body 3.

[0063] In this embodiment, the water pipe assembly 100 is the water inlet pipe assembly 100a, which is used for the water inlet of the water heater, that is, the electric shock prevention wall body 3 is the water inlet electric shock prevention wall 3a. Specifically, the electric shock prevention wall body 3 includes an inner pipe 31 and an outer pipe 32. The first end of the inner pipe 31 is inserted into the installation cavity 24 by interference fit. The second end of the inner pipe 31 has a communication water port 3111, and the inner cavity of the inner pipe 31 forms a water inlet channel 341; the outer pipe 32 is sleeved outside the inner pipe 31, and a water passing gap 342 is formed between the outer side wall of the inner pipe 31 and the inner side wall of the outer pipe 32. One end of the water passing gap 342 far from the housing 1 is closed, and a water outlet 321 communicating with the water passing gap 342 is opened at one end of the outer pipe 32 close to the housing 1. The water passing gap 342 is communicated with the water inlet channel 341 through the communication water port 3111. The water passing channel 34 includes a communicated water inlet channel 341 and a water passing gap 342.

[0064] By providing the inner pipe 31 and the outer pipe 32, the cold water entering from the water passing hole 11 can first enter the water inlet channel 341, enter the water passing gap 342 through the communication water port 3111, and then flow along the length direction of the electric shock prevention wall body 3 in the water passing gap 342 to the water outlet 321 and flow out. Thus, on the basis that the length of the electric shock prevention wall body 3 remains unchanged, the length of the water passing channel 34 is close to twice the length of the electric shock prevention wall body 3, effectively extending the flow path of the water in the electric shock prevention wall body 3, thereby increasing the water resistance and realizing the anti-electric leakage setting.

[0065] To simplify the processing of the electric shock prevention wall body 3, both the inner pipe 31 and the outer pipe 32 are provided with through holes at both ends. The electric shock prevention wall body 3 further includes a sealing end head 33, and the sealing end head 33 seals one end of the inner pipe 31 far from the housing 1 and one end of the outer pipe 32 far from the housing 1. In other embodiments, only one end of the outer pipe 32 far from the housing 1 can be sealed, and the ends of the inner pipe 31 and the outer pipe 32 are attached or spaced apart.

[0066] In one embodiment, the sealing end 33 includes a sealing plate portion 331, an inner sealing portion 332 and an outer sealing portion 333 coaxially connected to the sealing plate portion 331. The inner sealing portion 332 is press-fitted into the inner pipe 31, and the outer sealing portion 333 is press-fitted between the inner pipe 31 and the outer pipe 32, thus simplifying the assembly of the sealing end 33 and improving the convenience of installation and disassembly of the electric shock prevention wall body 3. In other embodiments, the sealing end 33 can be welded to the outer pipe 32 and the inner pipe 31.

[0067] To improve the assembly accuracy of the electric shock prevention wall body 3, the inner pipe 31 includes a main pipe portion 311, a positioning pipe portion, a convex ring portion 312 and an insertion pipe portion 314 that are coaxially connected in sequence along the axial direction. The insertion pipe portion 314 is press-fitted into the installation cavity 24, and the outer diameters of the main pipe portion 311, the positioning pipe portion and the convex ring portion 312 increase in sequence. The outer pipe 32 is press-fitted over the positioning pipe portion and abuts against the convex ring portion 312, and a water passing gap 342 is formed between the outer pipe 32 and the main pipe portion 311. Further, the outer diameter of the insertion pipe portion 314 is larger than the outer diameter of the main pipe portion 311 to increase the wall thickness of the inner pipe 31 at the connection with the rotor positioning sleeve 2, thereby ensuring the installation stability and reliability of the inner pipe 31.

[0068] To ensure smooth water inlet, at least two communication water ports 3111 are arranged at intervals along the circumferential direction of the inner pipe 31 to ensure the smooth flow of water from the water inlet channel 341 into the water passing gap 342. A plurality of water outlet ports 321 are arranged at intervals along the circumferential direction of the outer pipe 32 to ensure the smooth flow of water out of the electric shock prevention wall body 3.

[0069] To reduce the disturbance of the incoming water flow to the original water in the inner tank 200, in one embodiment, the water pipe assembly 100 further includes a water guide sleeve 5. The water guide sleeve 5 is sleeved outside the outer pipe 32, and a water guide cavity 51 with a downward open end is formed by the water guide sleeve 5 surrounding the outer pipe 32. The downward open end of the water guide cavity 51 forms a water outlet opening 52. The water outlet port 321 is located within the coverage range of the water guide cavity 51 and communicates with the water guide cavity 51. Thus, the water flow flowing out from the water outlet port 321 enters the water guide cavity 51 and flows to the inside of the inner tank 200 through the water outlet opening 52 of the water guide cavity 51. Since the hot water in the inner tank 200 is usually in the upper layer, setting the water outlet opening 52 of the water guide cavity 51 downward can make the water flow flowing out of the water guide cavity 51 flow downward as much as possible, avoiding affecting the upper layer of hot water in the inner tank 200, thereby avoiding the mixing of the incoming cold water and the upper layer of hot water and ensuring the outlet water temperature of the upper layer of hot water.

[0070] In one embodiment, the water guide sleeve 5 has a frustum-like structure, that is, the cross-sectional area of the water guide sleeve 5 gradually increases from top to bottom, which is conducive to realizing the convergence and guidance of the downward flow of water and improving the smoothness of water outlet. Further, the lower end of the water guide sleeve 5 is arranged close to the upper end of the outer shell 1, so as to avoid interference between the water guide sleeve 5 and the inner tank 200 while reducing the position of the water outlet opening 52 and further reducing the disturbance of the incoming cold water to the original water in the inner tank 200.

[0071] To improve the installation convenience of the water pipe assembly 100 in the inner tank 200, a first thread section is provided on the outer side wall of the first end of the outer shell 1, and a second thread section is provided on the outer side wall of the second end of the outer shell 1. The first thread section is used to install the water pipe assembly 100 onto the inner tank 200, and the second thread section is used to connect with the incoming and outgoing water pipelines.

[0072] A limiting convex portion 13 is further protruded on the outer side wall of the outer shell 1. The limiting convex portion 13 is located between the first thread section and the second thread section and is arranged close to the first thread section. The limiting convex portion 13 is used to limit the screwing depth of the thread of the water pipe assembly 100 assembled onto the mounting seat 300 of the outer shell 1 and the inner tank 200, so as to better realize the installation positioning and limiting. The limiting convex portion 13 is integrally formed on the outer shell 1 to ensure the structural strength of the limiting convex portion 13.

[0073] Embodiment Two

[0074] As Figure 5 and Figure 6 shown, this embodiment provides a water pipe assembly 100, and the water pipe assembly 100 provided in this embodiment is an outlet water pipe assembly 100b. The outlet water pipe assembly 100b includes an outer shell 1, a rotor positioning sleeve 2 and an electric shock prevention wall body 3. The structures of the outer shell 1 and the rotor positioning sleeve 2 are the same as those in Embodiment One, and will not be elaborated in this embodiment.

[0075] In this embodiment, the electric shock prevention wall body 3 is an outlet water electric shock prevention wall 3b, which includes an inner pipe 31 and an outer pipe 32 sleeved outside the inner pipe 31. Both ends of the inner cavity of the inner pipe 31 are open to form a water passing channel 34 with both ends open. That is, one end of the water passing channel 34 far from the outer shell 1 forms an inlet end, and one end of the water passing channel 34 close to the outer shell 1 forms an outlet end. The outlet end is press-fitted into the rotor positioning sleeve 2.

[0076] It should be noted that the fitting structures between the inner pipe 31 and the rotor positioning sleeve 2 and the outer shell 1 are the same as those in Embodiment One, and will not be elaborated in this embodiment.

[0077] In this embodiment, the outer pipe 32 closely wraps the inner pipe 31, that is, there is no gap between the outer pipe 32 and the inner pipe 31. The inner pipe 31 is made of an insulating material, such as plastic, and the outer pipe 32 is made of a metal material, such as aluminum, etc. Thus, while ensuring the insulation of the wall of the water passage 34, the structural strength and stiffness of the entire electric shock prevention wall body 3 can be ensured, the probability of damage to the electric shock prevention wall body 3 can be reduced, and the use safety and reliability of the water pipe assembly 100 can be improved.

[0078] In this embodiment, the inner pipe 31 includes a main pipe portion 311, a positioning pipe portion, a convex ring portion 312, and an insertion pipe portion 314 that are coaxially connected in sequence along the axial direction. The insertion pipe portion 314 is press-fitted into the installation cavity 24, and the outer diameters of the main pipe portion 311, the positioning pipe portion, and the convex ring portion 312 increase in sequence. The outer pipe 32 is press-fitted over the positioning pipe portion and abuts against the convex ring portion 312, and a water passage gap 342 is formed between the outer pipe 32 and the main pipe portion 311. Further, the outer diameter of the insertion pipe portion 314 is larger than the outer diameter of the main pipe portion 311 to increase the wall thickness of the inner pipe 31 at the connection with the rotor positioning sleeve 2, thereby ensuring the installation stability and reliability of the inner pipe 31. The outer pipe 32 wraps around the outside of the main pipe portion 311, and one end face of the outer pipe 32 abuts against the positioning ring portion 313.

[0079] Embodiment III

[0080] As Figures 7 to 9 shown, this embodiment provides a water heater, which includes an inner tank 200, a heating device, and a flow sensor. The heating device is used to heat the water in the inner tank 200. An installation opening is provided on the inner tank 200, the water pipe assembly 100 is detachably installed at the installation opening, and the electric shock prevention wall body 3 extends into the inner part of the inner tank 200. The rotor assembly of the flow sensor is installed in the installation cavity 24.

[0081] Specifically, two sets of water pipe assemblies 100 are provided, namely an inlet water pipe assembly 100a and an outlet water pipe assembly 100b, and the installation openings are provided in one-to-one correspondence with the water pipe assemblies 100. Among them, the inlet water pipe assembly 100a is used to introduce cold water into the inner tank 200, and the outlet water pipe assembly 100b is used to draw out the hot water in the inner tank 200.

[0082] In this embodiment, the inlet water pipe assembly 100a adopts the inlet water pipe assembly 100a in Embodiment I, and the outlet water pipe assembly 100b adopts the outlet water pipe assembly 100b in Embodiment II to improve the overall maintenance and disassembly convenience of the water heater. In other embodiments, only the inlet water pipe assembly 100a can adopt the water pipe assembly 100 in Embodiment I, and the outlet water pipe assembly 100b can adopt the outlet water pipe structure in the prior art. In another other embodiment, it can also be that the outlet water pipe assembly 100b adopts the water pipe assembly 100 in Embodiment II, while the inlet water pipe assembly 100a adopts the inlet water pipe structure in the prior art.

[0083] It should be noted that in this embodiment, since the inlet pipe assembly 100a and the outlet pipe assembly 100b are both provided with the rotor positioning sleeve 2, and the water heater only needs to be provided with a flow sensor at the inlet pipe or the outlet pipe, that is, the flow sensor can be selectively installed on the inlet pipe assembly 100a or the outlet pipe assembly 100b. The installation position of the flow sensor can be set according to requirements, improving the installation flexibility and convenience.

[0084] To realize the installation of the water pipe assembly 100 on the inner tank 200, an installation seat 300 is provided at the installation opening. The installation seat 300 has an installation cavity with an opening facing downwards, and an avoidance through hole is opened at the bottom of the installation cavity; the upper end of the outer shell 1 is installed in the installation cavity, and a sealing member 400 is pressed between the upper end of the outer shell 1 and the cavity wall of the installation cavity; a limiting convex portion 13 is convexly provided on the outer side wall of the outer shell 1, and the limiting convex portion 13 abuts against the lower end face of the installation seat 300, and the electric shock prevention wall body 3 is inserted into the inner tank 200 through the avoidance through hole.

[0085] By providing the sealing member 400, the connection position between the installation seat 300 and the outer shell 1 can be sealed, preventing the water in the inner tank 200 from leaking out through the connection between the installation seat 300 and the outer shell 1; by providing the lower end face of the installation seat 300 to abut against the limiting convex portion 13, the depth of insertion of the upper end of the outer shell 1 into the installation cavity can be limited, thereby avoiding excessive compression of the sealing member 400 and being easily damaged, and ensuring the sealing reliability of the sealing member 400.

[0086] Furthermore, the installation seat 300 includes a main cylinder portion 301. The lower end of the main cylinder portion 301 is provided with an open end, and an avoidance through hole is opened at the end of the main cylinder portion 301. The main cylinder portion 301 is installed at the installation opening, and an internal thread is provided on the inner wall of the main cylinder portion 301. The internal thread is screwed and matched with the first thread section, so that the first end of the outer shell 1 is screwed into the main cylinder portion 301. Thereby, the connection tightness between the installation seat 300 and the outer shell 1 can be ensured, and the threaded connection can also play a role in secondary sealing, further improving the waterproof performance.

[0087] A limiting portion 302 is convexly provided on the outer side wall of the main cylinder portion 301. The outer diameter of the limiting portion 302 is larger than the diameter of the installation opening. The upper end of the limiting portion 302 abuts against the opening end face of the installation hole 12 to limit the installation position of the installation seat 300 on the inner tank 200.

[0088] In the specific content of the above specific implementation manner, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope described in this specification.

[0089] The specific content of the above specific embodiments only expresses several embodiments of the present utility model. Its description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A water pipe assembly, characterized in that, Comprising: A housing (1) having a water passage hole (11) and a mounting hole (12) that communicate with each other. The water passage hole (11) and the mounting hole (12) respectively penetrate through opposite ends of the housing (1). A positioning step surface (14) facing the mounting hole (12) is formed at the connection between the mounting hole (12) and the water passage hole (11). A rotor positioning sleeve (2) is press-fitted into the mounting hole (12) and its first end abuts against the positioning step surface (14). The rotor positioning sleeve (2) has a mounting cavity (24) that penetrates through both ends. An inner wall of one end of the mounting cavity (24) remote from the positioning step surface (14) is convexly provided with a limiting step (25). The inner diameter of the water passage hole (11) is smaller than the inner diameter of the mounting cavity (24), and the mounting cavity (24) is used for mounting a rotor assembly. An anti-electricity wall body (3) having a water passage (34). The first end of the anti-electricity wall body (3) is press-fitted into the end of the mounting cavity (24) remote from the water passage hole (11), and the anti-electricity wall body (3) abuts against the rotor positioning sleeve (2). The water passage hole (11), the mounting cavity (24), and the water passage (34) are sequentially communicated.

2. The water pipe assembly according to claim 1, characterized in that, The mounting cavity (24) includes a main cavity portion (241) and a plugging cavity portion (242). The main cavity portion (241) is located between the plugging cavity portion (242) and the water passage hole (11), and the inner diameter of the main cavity portion (241) is larger than the inner diameter of the plugging cavity portion (242) and the inner diameter of the water passage hole (11). The main cavity portion (241) is used for mounting the rotor assembly. The limiting step (25) is formed at the connection between the main cavity portion (241) and the plugging cavity portion (242). The first end of the anti-electricity wall body (3) is press-fitted into the plugging cavity portion (242). And / or, a limiting ring portion (23) is convexly provided on the cavity wall of the mounting cavity (24). An annular groove is formed on the outer side wall of the first end of the anti-electricity wall body (3), and the annular groove penetrates through the end face of the first end of the anti-electricity wall body (3). The water pipe assembly further includes a sealing ring (4), and the sealing ring (4) is squeezed between the bottom of the annular groove and the limiting ring portion (23).

3. The water pipe assembly according to claim 2, characterized in that, The rotor positioning sleeve (2) includes a coaxially connected mounting sleeve portion (21) and a plugging sleeve portion (22). The outer diameter of the mounting sleeve portion (21) is larger than the outer diameter of the plugging sleeve portion (22). The mounting sleeve portion (21) is press-fitted into the mounting hole (12) and abuts against the positioning step surface (14). The inner cavity of the mounting sleeve portion (21) forms the main cavity portion (241), and the inner cavity of the plugging sleeve portion (22) forms the plugging cavity portion (242).

4. The water pipe assembly according to claim 1, wherein The mounting hole (12) is a tapered hole. The small end of the tapered hole communicates with the water passage hole (11), and the rotor positioning sleeve (2) is in interference fit with the small end of the tapered hole. And / or, a convex ring portion (312) is protruded from the outer side wall of the electric shock protection wall body (3), and the convex ring portion (312) is located outside the rotor positioning sleeve (2) and is in interference fit with the mounting hole (12).

5. The water pipe assembly according to claim 1, characterized in that, A first external thread section is provided on the outer side wall of one end of the outer shell (1) away from the water through hole (11), and a limit convex portion (13) is protruded from the outer side wall of the outer shell (1), and the limit convex portion (13) is spaced from the first external thread section.

6. The water pipe assembly according to any one of claims 1-5, characterized in that, The electric shock protection wall body (3) includes: An inner pipe (31), the first end of the inner pipe (31) is inserted into the installation cavity (24) by interference fit, the second end of the inner pipe (31) has a communication water port (3111), and a water inlet channel (341) is formed in the inner cavity of the inner pipe (31); An outer pipe (32) is sleeved outside the inner pipe (31), and a water passing gap (342) is formed between the inner side wall of the inner pipe (31) and the outer side wall of the outer pipe (32). One end of the water passing gap (342) away from the outer shell (1) is closed, and a water outlet (321) communicating with the water passing gap (342) is provided at one end of the outer pipe (32) close to the outer shell (1). The water passing gap (342) is communicated with the water inlet channel (341) through the communication water port (3111), and the water passing channel (34) includes the communicated water inlet channel (341) and the water passing gap (342).

7. The water pipe assembly according to claim 6, wherein, The water pipe assembly further includes a water guiding sleeve (5), the water guiding sleeve (5) is sleeved outside the outer pipe (32), and a water guiding cavity (51) is formed by surrounding the water guiding sleeve (5) and the outer pipe (32). The opening of the water guiding cavity (51) faces the outer shell (1), and the water outlet (321) is communicated with the water guiding cavity (51).

8. The water pipe assembly according to any one of claims 1-5, characterized in that, The electric shock protection wall body (3) includes an inner pipe (31) and an outer pipe (32) wrapped outside the inner pipe (31). The inner pipe (31) has the water passing channel (34) with both ends open. The inner pipe (31) is made of a plastic material, and the outer pipe (32) is made of a metal material. The first end of the inner pipe (31) is inserted into the installation cavity (24) by interference fit, and the outer pipe (32) is located outside the rotor positioning sleeve (2).

9. A water heater, comprising an inner tank (200) and a flow sensor, wherein an installation opening is formed in the wall of the inner tank (200), and is characterized in that, It further includes the water pipe assembly according to any one of claims 1-8. The outer shell (1) is detachably installed at the installation port, the electric shock protection wall body (3) extends into the inner tank (200), and the rotor assembly of the flow sensor is installed in the installation cavity (24).

10. The water heater according to claim 9, characterized in that, An installation seat (300) is provided at the installation port. The installation seat (300) has an installation cavity with an opening facing downwards, and an avoidance through hole is provided at the bottom of the installation cavity; The upper end of the housing (1) is installed in the installation cavity, a sealing member is pressed between the upper end of the housing (1) and the bottom of the installation cavity, a limiting convex portion (13) is convexly provided on the outer side wall of the housing (1), the limiting convex portion (13) abuts against the lower end face of the mounting seat (300), and the electric shock prevention wall body (3) is inserted into the inner container (200) through the avoidance through hole.

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