Electricity-proof wall structure and electric water heater

Abstract

The utility model relates to the technical field of hot water equipment, and discloses an electricity-proof wall structure and an electric water heater, in the electricity-proof wall structure, a gap is reserved between the outer peripheral surface of an electricity-proof wall core pipe on the outermost side and the inner peripheral surface of an electricity-proof wall shell, and a plurality of electricity-proof wall shell pipes and a plurality of electricity-proof wall core pipes are alternately sleeved in the radial direction; electricity-proof wall water flow channels which are sequentially communicated in a roundabout mode are formed, and the electricity-proof effect is achieved by prolonging the electricity-proof wall water flow channels and increasing water resistance; the axial length of the electricity-proof wall structure can be greatly reduced while the electricity-proof effect is ensured, the occupied space is reduced, and later assembly is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water equipment, in particular to an anti-electricity wall structure and an electric water heater. Background Art

[0002] The electric water heater is equipped with a temperature sensor assembly and a flow sensor assembly, wherein the temperature sensor assembly is used to detect the outlet water temperature of the electric water heater, and the flow sensor assembly is used to detect the outlet water flow of the electric water heater. The flow sensor assembly includes a Hall chip and a wind wheel assembly, and the Hall chip detects the speed of the magnetic rotor in the wind wheel assembly to detect the flow of water. The temperature sensor assembly includes a probe, and the probe senses the water temperature when water flows through the probe.

[0003] In order to avoid the potential safety hazards of electricity use caused by water flowing through the temperature sensor assembly and the flow sensor assembly, electric water heaters are usually equipped with anti-electricity walls. By extending the water channel to achieve greater water resistance, the leakage current is attenuated to within the safe current for the human body after passing through the anti-electricity wall. In order to ensure the anti-electricity effect, the anti-electricity wall structure is large in size, which is not conducive to later assembly. Utility Model Content

[0004] One of the technical problems solved by the utility model is to provide an anti-electricity wall structure, which can achieve an anti-electricity effect by extending the water channel and increasing the water resistance, and can also reduce the occupied space of the anti-electricity wall structure and improve the convenience of later assembly.

[0005] The second technical problem solved by the utility model is to provide an electric water heater which can improve the aesthetic effect and waterproof performance of the electric water heater.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] An anti-electricity wall structure comprises an anti-electricity wall shell and an inner core, wherein the first pipe opening and the second pipe opening are respectively arranged at opposite ends of the anti-electricity wall shell, the inner core comprises at least two anti-electricity wall core tubes which are closed at one axial end and are sequentially sleeved from the inside to the outside, and the anti-electricity wall shell is provided with at least two anti-electricity wall shell tubes which are sequentially sleeved from the inside to the outside;

[0008] The inner core is located in the anti-electricity wall shell, and adjacent anti-electricity wall shell tubes and anti-electricity wall core tubes are radially alternately arranged; a gap is left between the outer circumferential surface of the outermost anti-electricity wall core tube and the inner circumferential surface of the anti-electricity wall shell, and a gap is left between adjacent anti-electricity wall shell tubes and anti-electricity wall core tubes, so as to form a plurality of annular water channels that are connected in sequence in a circuitous manner, the outermost annular water channel is connected to the first pipe opening, and the innermost annular water channel is connected to the second pipe opening.

[0009] Compared with the background technology, the anti-electricity wall structure provided by the utility model has the following beneficial effects: a gap is left between the outer circumferential surface of the outermost anti-electricity wall core tube and the inner circumferential surface of the anti-electricity wall shell, and multiple anti-electricity wall shell tubes and multiple anti-electricity wall core tubes are radially and alternately arranged to form anti-electricity wall water flow channels that are connected in a circuitous manner in sequence, thereby achieving the anti-electricity effect by increasing the water resistance through extending the anti-electricity wall water flow channel; while ensuring the anti-electricity effect, the axial length of the anti-electricity wall structure can be greatly reduced, the occupied space can be reduced, and the later assembly is convenient.

[0010] In some embodiments, the anti-electrical wall shell includes an anti-electrical wall shell 1 provided with the first pipe opening, and an anti-electrical wall shell 2 provided with the second pipe opening; a sealing member is provided between the anti-electrical wall shell 1 and the anti-electrical wall shell 2, and the anti-electrical wall shell 1 and the anti-electrical wall shell 2 are connected by a plurality of fasteners distributed at circumferential intervals;

[0011] The anti-electric shock wall shell tube and the inner core are both arranged in the anti-electric shock wall shell 2, one axial end of the anti-electric shock wall shell tube is connected to the anti-electric shock wall shell 2, and the inner core is axially clamped between the anti-electric shock wall shell 1 and the anti-electric shock wall shell 2.

[0012] In some embodiments, one of the anti-vibration wall shell 1 and the anti-vibration wall shell 2 is provided with an annular boss, and the other is provided with an annular groove, the annular boss is axially inserted in the annular groove, and the seal is arranged between the outer wall of the annular boss and the inner wall of the annular groove.

[0013] In some embodiments, the end of the anti-electrical wall core tube away from its closed end is a connecting end, and the connecting end is provided with at least two first protrusions distributed circumferentially, and the first protrusions are axially abutted against the inner wall of the second anti-electrical wall shell, and a first opening is formed between two adjacent first protrusions, and two adjacent annular water channels are connected through the first opening.

[0014] In some embodiments, the inner core further includes a sealing plate that closes one axial end of all the anti-electrical wall core tubes, and the anti-electrical wall shell tube faces the axial end surface of the sealing plate and is spaced apart from the sealing plate.

[0015] In some embodiments, the anti-electrical wall structure also includes a flow sensor assembly, which is arranged at one end of the sealing plate facing away from the anti-electrical wall shell tube, and the flow sensor assembly includes a guide tube fixed in the first pipe opening, a magnetic rotor rotatably arranged in the guide tube, and a Hall chip arranged outside the anti-electrical wall shell, the Hall chip is arranged opposite to the magnetic rotor, and the Hall chip is used to detect the rotation speed of the magnetic rotor; a flared structure is formed at the water inlet end of the guide tube.

[0016] In some embodiments, the side of the blocking plate facing away from the anti-electrical wall shell tube is the first side, the anti-electrical wall shell has a second side facing the first side, the first side and the second side are spaced apart to form a transition chamber, and the transition chamber is connected to the outermost annular water channel;

[0017] The first side surface is provided with at least two second protrusions which are circumferentially spaced apart, a second opening is formed between two adjacent second protrusions, and the guide cylinder is connected with the transition chamber through the second opening.

[0018] In some embodiments, a mounting through pipe is embedded in the first pipe opening;

[0019] A straight through pipe is sandwiched between the installation through pipe and the sealing plate, the guide tube is arranged in the straight through pipe, the second protrusion is arranged at one axial end of the straight through pipe and partially placed in the straight through pipe, one end of the guide tube abuts against the second protrusion, and the other end is fixed to the straight through pipe; or, a first top column is sandwiched between one end of the guide tube and the sealing plate, the second opening is arranged on the first top column, and a second top column is sandwiched between the other end of the guide tube and the installation through pipe.

[0020] In some embodiments, an annular convex edge is provided between the first side surface and the second side surface, and at least two third openings spaced circumferentially are provided on the annular convex edge, and the transition chamber and the second opening are communicated through the third openings.

[0021] The above second technical problem is solved by the following technical solution:

[0022] An electric water heater comprises a water heater body and an anti-electricity wall structure as described in any of the above schemes, wherein the anti-electricity wall structure is installed at the water inlet end or the water outlet end of the water heater body.

[0023] Compared with the background technology, the electric water heater provided by the utility model has the following beneficial effects:

[0024] By adopting the above-mentioned anti-electricity wall structure, the electric water heater can significantly reduce the axial length of the anti-electricity wall structure while ensuring the anti-electricity effect, reduce the occupied space, and thus facilitate the subsequent assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0026] Figure 1 This is an exploded view of the first anti-electrical wall structure provided by the embodiment of the utility model;

[0027] Figure 2 This is a cross-sectional view of the first anti-electrical wall structure provided by the embodiment of the utility model. Figure 1 ;

[0028] Figure 3 This is a cross-sectional view of the first anti-electrical wall structure provided by the embodiment of the utility model. Figure 2 ;

[0029] Figure 4 It is a structural schematic diagram of the second anti-electrical wall shell provided by an embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the inner core of the first anti-electrical wall structure provided by the embodiment of the utility model. Figure 1 ;

[0031] Figure 6 This is a schematic diagram of the structure of the inner core of the first anti-electrical wall structure provided by the embodiment of the utility model. Figure 2 ;

[0032] Figure 7 It is a structural schematic diagram of a first anti-electricity wall structure provided by an embodiment of the utility model;

[0033] Figure 8 It is a cross-sectional view of the inner core of the first anti-electricity wall structure provided by the embodiment of the utility model;

[0034] Fig. 9 This is a partial disassembly diagram of the first anti-electricity wall structure provided by the embodiment of the utility model. Figure 1 ;

[0035] Fig.10 This is a partial disassembly diagram of the first anti-electricity wall structure provided by the embodiment of the utility model. Figure 2 ;

[0036] Fig.11 This is an exploded view of a second anti-electrical wall structure provided by an embodiment of the utility model;

[0037] Fig.12 It is a cross-sectional view of a second anti-electrical wall structure provided in an embodiment of the utility model.

[0038] In the figure:

[0039] 10. Anti-electric wall shell; 101. Anti-electric wall shell 1; 1011. Annular boss; 1012. Annular convex edge; 1013. Mounting groove; 1014. Mounting boss; 10141. Countersunk hole; 1015. First flange; 1016. First pipe opening; 1017. Second side; 102. Anti-electric wall shell 2; 1021. Anti-electric wall shell tube; 10211. Shell protrusion; 1022. Annular groove; 1023. First limiting surface; 1024. Second flange; 1025. Second pipe opening;

[0040] 20, inner core; 201, anti-electric wall core tube; 2011, first opening; 2012, first protrusion; 2013, core protrusion; 202, blocking plate; 2021, first side surface; 203, straight-through tube; 2031, second opening; 2032, second protrusion;

[0041] 30. Install the through pipe; 301. Avoidance; 302. Stop rib;

[0042] 40. Seals;

[0043] 50, flow sensor assembly; 501, guide tube; 5011, cylinder; 502, magnetic rotor; 503, Hall chip; 504, turbofan structure;

[0044] 60. Temperature sensor assembly; 601. Temperature sensing probe; 602. Pressing plate;

[0045] 70. Circlip;

[0046] 801, first top column; 802, second top column;

[0047] 100. Annular water channel; 200. Transition chamber. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0049] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0052] like Figures 1 to 12 As shown, an embodiment of the utility model provides an anti-electricity wall structure, which can significantly reduce the axial length of the anti-electricity wall structure while ensuring the anti-electricity effect, reduce the occupied space, and thus facilitate the subsequent assembly.

[0053] like Figures 1 to 3 As shown, the anti-electricity wall structure includes an anti-electricity wall shell 10 and an inner core 20, wherein the first pipe opening 1016 and the second pipe opening 1025 are respectively provided at the opposite ends of the anti-electricity wall shell 10, and the inner core 20 includes at least two anti-electricity wall core tubes 201 which are closed at one axial end and are sequentially sleeved from the inside to the outside, and the anti-electricity wall shell 10 is provided with at least two anti-electricity wall shell tubes 1021 which are sequentially sleeved from the inside to the outside.

[0054] The inner core 20 is located in the anti-electricity wall shell 10, and adjacent anti-electricity wall shell tubes 1021 and anti-electricity wall core tubes 201 are radially alternately arranged; a gap is left between the outer circumferential surface of the outermost anti-electricity wall core tube 201 and the inner circumferential surface of the anti-electricity wall shell 10, and a gap is left between the anti-electricity wall shell tube 1021 and the anti-electricity wall core tube 201, so as to form a plurality of annular water channels 100 that are connected in sequence in a circuitous manner, the outermost annular water channel 100 is connected to the first pipe opening 1016, and the innermost annular water channel 100 is connected to the second pipe opening 1025. The anti-electricity wall structure provided by the embodiment of the utility model leaves a gap between the outer circumference of the outermost anti-electricity wall core tube 201 and the inner circumference of the anti-electricity wall shell 10, and multiple anti-electricity wall shell tubes 1021 and multiple anti-electricity wall core tubes 201 are radially and alternately arranged to form anti-electricity wall water flow channels that are connected in sequence and in a circuitous manner, thereby achieving the anti-electricity effect by increasing the water resistance through extending the anti-electricity wall water flow channel; and while ensuring the anti-electricity effect, it is possible to greatly reduce the axial length of the anti-electricity wall structure, reduce the occupied space, and thus facilitate the later assembly.

[0055] For example, Figure 4 and Figure 5 As shown, the inner core 20 includes two anti-electricity wall core tubes 201, and two anti-electricity wall shell tubes 1021 are arranged in the anti-electricity wall shell 10. The inner core 20 is inserted between the inner circumference of the anti-electricity wall shell 10 and the outer circumference of the innermost anti-electricity shell tube 1021. In any three radially adjacent annular water channels 100, the axial ends of the middle annular water channel 100 are respectively connected with the other two annular water channels 100, and the innermost annular water channel 100 is connected with the other end of the innermost anti-electricity wall shell tube 1021, and one end of the outermost annular water channel 100 is connected with the first pipe opening 1016. The innermost annular water channel 100 is connected with the second pipe opening 1025 through the innermost anti-electricity wall shell tube 1021. In this way, the first pipe opening 1016, the plurality of annular water channels 100 arranged sequentially from the outside to the inside, the inner cavity of the innermost anti-electricity wall shell tube 1021 and the second pipe opening 1025 are connected in a circuitous manner to form an anti-electricity wall water flow channel. In other embodiments, three, four or more anti-electricity wall core tubes 201 may be provided, and the number of anti-electricity wall shell tubes 1021 and anti-electricity wall core tubes 201 is the same, so that the anti-electricity wall shell tubes 1021 and the anti-electricity wall core tubes 201 are radially alternately arranged.

[0056] In some embodiments, Figure 2 , Figures 4 to 6 As shown, at least one annular water channel 100 is provided with a plurality of circumferentially spaced protrusions, the protrusions extending along the axial direction of the annular water channel 100, and the plurality of protrusions divide the annular water channel 100 into a plurality of axial channels. Exemplarily, the outer circumferential surface of each anti-electric wall shell tube 1021 is provided with a plurality of circumferentially spaced shell protrusions 10211, and the outer circumferential surface of each anti-electric wall core tube 201 is provided with a plurality of circumferentially spaced core protrusions 2013.

[0057] In some embodiments, Figure 1 , Figure 2 and Figure 7 As shown, the anti-electrical wall shell 10 includes an anti-electrical wall shell 101 provided with a first pipe opening 1016, and an anti-electrical wall shell 102 provided with a second pipe opening 1025; a sealing member 40 is provided between the anti-electrical wall shell 101 and the anti-electrical wall shell 102, and the anti-electrical wall shell 101 and the anti-electrical wall shell 102 are connected by a plurality of circumferentially spaced fasteners; the anti-electrical wall shell tube 1021 and the inner core 20 are both provided in the anti-electrical wall shell 102, one axial end of the anti-electrical wall shell tube 1021 is connected to the anti-electrical wall shell 102, and the inner core 20 is axially clamped between the anti-electrical wall shell 101 and the anti-electrical wall shell 102.

[0058] The connection position between the anti-electricity wall shell 101 and the anti-electricity wall shell 102 is sealed by the sealing member 40, and the anti-electricity wall shell 101 and the anti-electricity wall shell 102 are connected by a plurality of circumferentially spaced fasteners, so that the sealing effect between the anti-electricity wall shell 101 and the anti-electricity wall shell 102 can be improved; and the anti-electricity wall shell 101 and the anti-electricity wall shell 102 are easy to disassemble and assemble, thereby reducing the disassembly and assembly efficiency.

[0059] In some embodiments, Figure 2 As shown, one of the anti-electricity wall shell 101 and the anti-electricity wall shell 2 102 is provided with an annular boss 1011, and the other is provided with an annular groove 1022, the annular boss 1011 is axially inserted into the annular groove 1022, and the sealing member 40 is provided between the outer wall of the annular boss 1011 and the inner wall of the annular groove 1022. Such an arrangement can improve the sealing effect between the anti-electricity wall shell 101 and the anti-electricity wall shell 2 102.

[0060] In some embodiments, Figure 2 , Figure 4 and Figure 7 As shown, a first flange 1015 is provided at one axial end of the anti-electrical wall housing 101, and an annular boss 1011 is convexly provided on the first flange 1015; a second flange 1024 is provided at one axial end of the anti-electrical wall housing 102, and an annular groove 1022 is provided on the second flange 1024. It should be noted that in some other embodiments, the annular groove 1022 can also be provided on the first flange 1015, and the annular boss 1011 can be provided on the second flange 1024.

[0061] Exemplarily, six fasteners are provided, and the fasteners may be screws, nuts, bolts, or the like.

[0062] In some embodiments, Figure 2 , Figure 6 and Figure 8As shown, the end of the anti-electricity wall core tube 201 away from its closed end is a connecting end, and the connecting end is provided with at least two first protrusions 2012 distributed circumferentially, and the first protrusions 2012 are axially abutted against the inner wall of the anti-electricity wall shell 102, and a first opening 2011 is formed between two adjacent first protrusions 2012. Two adjacent annular water channels 100 are connected through the first opening 2011, and the water flow turns back at the first protrusion 2012, which is conducive to reducing the flow velocity and forming multiple radial water flows, so as to reduce the voltage that the water flow may carry, thereby achieving an anti-electricity effect.

[0063] Exemplarily, each anti-electrical wall core tube 201 is provided with four first protrusions 2012 distributed at intervals in the circumferential direction, and the first protrusions 2012 and the anti-electrical wall core tube 201 are an integrally formed structural component.

[0064] It should be noted that the first protrusion 2012 can be set at the connecting end of only one anti-electricity wall core tube 201, and the number of first protrusions 2012 set on the connecting end of the same anti-electricity wall core tube 201 is not limited to four, but can also be two, or three, or five, or more; the connecting end of the anti-electricity wall core tube 201 can also be axially abutted against the inner wall of the anti-electricity wall shell 10, and a plurality of first through openings 2011 that penetrate the inner and outer circumferential surfaces and are circumferentially spaced can be set on the connecting tube; the first protrusion 2012 can also be independent of the anti-electricity wall core tube 201 and the anti-electricity wall shell 10, and the first protrusion 2012 can be clamped between the inner wall of the anti-electricity wall shell 10 and the anti-electricity wall core tube 201; the first protrusion 2012 can also be independent of the anti-electricity wall shell tube 1021, and the first protrusion 2012 and the anti-electricity wall shell 10 can be integrally formed or one end can be embedded in the inner wall of the anti-electricity wall shell 10.

[0065] For the convenience of description, the inner wall of the anti-vibration wall shell 102 abutting against the first protrusion 2012 is recorded as the first limiting surface 1023. The first protrusion 2012 is not only used to form the first opening 2011, but also the first protrusion 2012 axially abuts against the first limiting surface 1023, and can also play the role of axially limiting the inner core 20.

[0066] In some embodiments, Figure 2 , Figure 6 and Figure 8 As shown, the inner core 20 also includes a sealing plate 202 that closes one axial end of all the anti-electricity wall core tubes 201, and the axial end surface of the anti-electricity wall shell tube 1021 facing the sealing plate 202 is spaced from the sealing plate 202, so that two adjacent annular water channels 100 are connected and the innermost anti-electricity wall shell tube 1021 is connected to the innermost annular water channel 100, so that the innermost anti-electricity wall shell tube 1021 and multiple annular water channels 100 are connected in sequence from the inside to the outside, forming a circuitous anti-electricity wall water flow channel.

[0067] In some embodiments, Figure 2 , Fig. 9 and Fig.10 As shown, the anti-electrical wall structure also includes a flow sensor assembly 50, which is arranged at one end of the sealing plate 202 facing away from the anti-electrical wall shell tube 1021. The flow sensor assembly 50 includes a guide tube 501 fixed in the first pipe opening 1016, a magnetic rotor 502 rotatably arranged in the guide tube 501, and a Hall chip 503 arranged outside the anti-electrical wall shell 10. The Hall chip 503 is arranged opposite to the magnetic rotor 502, and the Hall chip 503 is used to detect the rotation speed of the magnetic rotor 502; the water inlet end of the guide tube 501 is formed with a flared structure.

[0068] With such arrangement, the rotation speed of the magnetic rotor 502 is detected by the Hall chip 503 to detect the flow rate of water, and the water flows into the guide tube 501 through the flared structure, which can improve the accuracy of the detection result of the flow sensor assembly 50; and the flow sensor assembly 50 is arranged at the closed end of the sealing plate 202, so as to avoid the disturbance of the flow of the liquid medium on the magnetic rotor 502, so that the flow sensor assembly 50 moves smoothly and the flow detection is more accurate and stable.

[0069] In some embodiments, Figure 2 and Figure 3 As shown, the side of the blocking plate 202 facing away from the anti-electrical wall shell tube 1021 is the first side 2021, and the anti-electrical wall shell 101 has a second side 1017 facing the first side 2021. The first side 2021 and the second side 1017 are arranged to form a transition chamber 200, and the transition chamber 200 is connected to the outermost annular water channel 100; the first side 2021 is provided with at least two second protrusions 2032 distributed at intervals in the circumferential direction, and a second opening 2031 is formed between two adjacent second protrusions 2032, and the guide tube 501 is connected to the transition chamber 200 through the second opening 2031. In this way, the outermost annular water channel 100, the transition chamber 200, the second opening 2031 and the guide tube 501 are connected in sequence, and the water flow is circuitous at the second protrusion 2032, which is conducive to reducing the flow rate and forming multiple radial water flows, so as to reduce the voltage that the water flow may carry, and play an anti-electrical effect.

[0070] In some embodiments, Figure 2 , Fig. 9 and Fig.10 As shown, a mounting through pipe 30 is embedded in the first pipe opening 1016, a straight through pipe 203 is sandwiched between the mounting through pipe 30 and the sealing plate 202, a flow guide tube 501 is disposed in the straight through pipe 203, a second protrusion 2032 is disposed at one axial end of the straight through pipe 203 and is partially placed in the straight through pipe 203, one end of the flow guide tube 501 abuts against the second protrusion 2032, and the other end is fixed to the straight through pipe 203.

[0071] Exemplarily, the straight tube 203, the installation tube 30 and the guide tube 501 are coaxially arranged, and the end surface of one axial end of the installation tube 30 forms a second limiting surface, and one end of the straight tube 203 axially abuts against the second limiting surface to axially limit the straight tube 203, thereby ensuring that the axial end surface of the anti-electric wall shell tube 1021 facing the blocking plate 202 is spaced from the blocking plate 202. Exemplarily, the installation tube 30 is installed in the first pipe opening 1016 in an interference fit manner.

[0072] Exemplarily, the blocking plate 202, the anti-electric wall core tube 201 and the straight tube 203 are integrally formed structural parts, and the second opening 2031 is opened at one axial end of the straight tube 203. It should be noted that in other embodiments, the straight tube 203 with the second opening 2031 can also be axially abutted against the blocking plate 202.

[0073] In some embodiments, Figure 2 , Fig. 9 and Fig.10 As shown, one end of the guide tube 501 away from the straight tube 203 is fixed to the straight tube 203 by a retaining spring 70. Specifically, the retaining spring 70 is clamped to the inner wall of the end of the straight tube 203. It should be noted that the retaining spring 70 can also be replaced by an elastic member such as a retaining ring, and the radial outer edge of the retaining ring is installed in the annular groove of the inner wall of the end of the straight tube 203, and the radial inner edge of the retaining ring is abutted against the axial end face of the guide tube 501 to achieve axial limitation of the guide tube 501.

[0074] In some embodiments, Fig.10 As shown, the guide tube 501 includes two axially plugged cylinders 5011, and the axial ends of the magnetic rotor 502 are respectively rotatably connected to the two cylinders 5011. At least one end of the magnetic rotor 502 is provided with a turbofan structure 504 connected to the cylinder 5011, so that the guide tube 501 can rotate stably. Exemplarily, the axial ends of the magnetic rotor 502 are both provided with turbofan structures 504, and the axial ends of the magnetic rotor 502 are respectively rotatably connected to the two turbofan structures 504.

[0075] In some embodiments, Figure 2 and Fig. 9 As shown, both ends of the anti-electricity wall housing 10 are respectively provided with external threads, which are respectively used to connect the inner tank of the electric water heater and the external water pipe, and the outer side wall of the anti-electricity wall housing 10 is provided with a mounting groove 1013 for mounting the Hall chip 503. The flow sensor assembly 50 is integrated into the anti-electricity wall structure, and the overall structure is small, which is conducive to the miniaturization of the product. Exemplarily, the mounting groove 1013 is provided in the anti-electricity wall housing 101.

[0076] The flow sensor assembly 50 also includes a signal line and a plug terminal, and the Hall chip 503 is connected to the signal line and the plug terminal. It should be noted that after the Hall chip 503 is connected to the signal line and the plug terminal, the Hall chip 503 can be poured and cured in the mounting groove 1013 with materials such as epoxy resin, so that the flow sensor assembly 50 and the anti-electric wall housing 10 are assembled as a whole, the connection is firm, there are few parts during installation, and the installation is convenient. It is also possible to pre-cast the Hall chip 503 into a prefabricated body after the Hall chip 503 is connected to the signal line and the plug terminal, and after the prefabricated body is cured and formed, the prefabricated body is detachably fixed in the mounting groove 1013, and at this time, a stud structure needs to be set in the mounting groove 1013 to match the bolt or screw connection and fixation. Among them, the shape of the prefabricated body is designed to match the shape of the mounting groove 1013, so as to form a stable installation and connection.

[0077] In some embodiments, Figure 2 , Fig. 9 and Fig.10 As shown, the installation through pipe 30 is provided with an avoidance opening 301, the outer wall of the anti-electrical wall shell 101 is provided with an installation boss 1014, and the installation boss 1014 is provided with a sink hole 10141. The anti-electrical wall structure also includes a temperature sensor assembly 60, and the temperature sensor assembly 60 includes a temperature probe 601 and a pressure plate 602. One end of the temperature probe 601 passes through the sink hole 10141 and is installed in the anti-electrical wall shell 10. The pressure plate 602 is connected to the installation boss 1014 through a fastener such as a self-tapping screw to press the temperature probe 601 into the sink hole 10141. The other end of the temperature probe 601 is connected to a signal line and a plug-in terminal that pass through the pressure plate 602, so as to realize the installation of the temperature sensor assembly 60. The installation through pipe 30 is provided with an avoidance opening 301 that is radially opposite to the sink hole 10141, so that the temperature probe 601 passes through the avoidance opening 301 and extends into the installation through pipe 30.

[0078] In some embodiments, Fig.10 As shown, the inner circumferential surface of the installation through pipe 30 is convexly provided with a plurality of stop ribs 302 distributed at circumferential intervals. When the anti-electric wall shell 10 is connected to the water pipe head on the inner tank of the electric water heater, the end of the water pipe in the inner tank can abut against the stop ribs 302 for limiting.

[0079] In some other embodiments, a plurality of second protrusions 2032 may be arranged between the straight pipe 203 and the blocking plate 202 at intervals in the circumferential direction. The second protrusions 2032 are independent of the straight pipe 203 and the blocking plate 202. Fig.11 and Fig.12As shown, a first top column 801 is provided at one axial end of the guide tube 501, and a second top column 802 is provided at the other end. The first top column 801 is sandwiched between the guide tube 501 and the blocking plate 202. A plurality of second openings 2031 distributed at intervals in the circumferential direction are provided on the first top column 801. The second top column 802 is sandwiched between the guide tube 501 and the installation through pipe 30. The installation through pipe 30 is installed in the first pipe opening 1016 by interference fit. An annular convex edge 1012 is provided between the first side surface 2021 and the second side surface 1017. At least two third openings distributed at intervals in the circumferential direction are provided on the annular convex edge 1012. The transition chamber 200 is connected to the second opening 2031 through the third opening. In this way, the transition chamber 200, the third opening, the second opening 2031 and the straight pipe 203 are connected in sequence. Moreover, the water flow turns around at the annular convex edge 1012, which is conducive to reducing the flow rate and forming multiple radial water flows, so as to reduce the voltage that the water flow may carry, and play an anti-electric effect. In order to prevent the water flow from entering the gap between the guide tube 501 and the first pipe opening 1016 after passing through the third opening, the inner diameter of the annular convex edge 1012 is set to be equal to the inner diameter of the first pipe opening 1016, the outer peripheral surface of the first top column 801 and the inner peripheral surface of the annular convex edge 1012 are fitted, and the second opening 2031 and the third opening are arranged opposite to each other, so that the second opening 2031 and the third opening are directly connected. Exemplarily, the annular convex edge 1012 and the anti-electric wall shell 101 are an integrally formed structural member. The annular flange 1012 and the anti-vibration wall shell 101 can also be formed as one piece; the annular flange 1012 can also be independent of the anti-vibration wall shell 101 and the sealing plate 202, and the annular flange 1012 can be clamped between the second side surface 1017 and the sealing plate 202.

[0080] In some embodiments, the utility model further provides an electric water heater, which includes a water heater body and the anti-electricity wall structure described in any of the above embodiments, the water heater body is provided with a water inlet and a water outlet, and the anti-electricity wall structure is provided at the water inlet or the water outlet. While ensuring the anti-electricity effect, the axial length of the anti-electricity wall structure can be greatly reduced, the occupied space can be reduced, and the later assembly is facilitated.

[0081] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Anti-electric wall structure, It is characterized in that The invention comprises an anti-electrical wall shell (10) and an inner core (20), wherein the first pipe opening (1016) and the second pipe opening (1025) are respectively arranged at opposite ends of the anti-electrical wall shell (10), the inner core (20) comprises at least two anti-electrical wall core tubes (201) which are closed at one axial end and are sequentially sleeved from the inside to the outside, and the anti-electrical wall shell (10) is provided with at least two anti-electrical wall shell tubes (1021) which are sequentially sleeved from the inside to the outside; The inner core (20) is located in the anti-electricity wall shell (10), and the adjacent anti-electricity wall shell tubes (1021) and the anti-electricity wall core tubes (201) are radially and alternately arranged; a gap is left between the outer peripheral surface of the outermost anti-electricity wall core tube (201) and the inner peripheral surface of the anti-electricity wall shell (10), and a gap is left between the adjacent anti-electricity wall shell tubes (1021) and the anti-electricity wall core tubes (201), so as to form a plurality of annular water channels (100) that are connected in a circuitous manner in sequence, the outermost annular water channel (100) being connected to the first pipe opening (1016), and the innermost annular water channel (100) being connected to the second pipe opening (1025).

2. The anti-electricity wall structure according to claim 1, It is characterized in that The anti-electrical wall shell (10) comprises an anti-electrical wall shell (101) provided with the first pipe opening (1016), and an anti-electrical wall shell (102) provided with the second pipe opening (1025); a sealing member (40) is provided between the anti-electrical wall shell (101) and the anti-electrical wall shell (102), and the anti-electrical wall shell (101) and the anti-electrical wall shell (102) are connected by a plurality of fasteners distributed at circumferential intervals; The anti-electrical wall shell tube (1021) and the inner core (20) are both arranged in the anti-electrical wall shell (102); one axial end of the anti-electrical wall shell tube (1021) is connected to the anti-electrical wall shell (102); and the inner core (20) is axially clamped between the anti-electrical wall shell (101) and the anti-electrical wall shell (102).

3. The anti-electricity wall structure according to claim 2, It is characterized in that One of the anti-vibration wall shell 1 (101) and the anti-vibration wall shell 2 (102) is provided with an annular boss (1011), and the other is provided with an annular groove (1022), the annular boss (1011) is axially inserted in the annular groove (1022), and the sealing member (40) is arranged between the outer wall of the annular boss (1011) and the inner wall of the annular groove (1022).

4. The anti-electricity wall structure according to claim 2, It is characterized in that The end of the anti-electrical wall core tube (201) away from its closed end is a connecting end, and the connecting end is provided with at least two first protrusions (2012) distributed circumferentially, and the first protrusions (2012) are axially abutted against the inner wall of the second anti-electrical wall shell (102), and a first opening (2011) is formed between two adjacent first protrusions (2012), and two adjacent annular water channels (100) are connected through the first opening (2011).

5. The anti-electricity wall structure according to claim 4, It is characterized in that The inner core (20) further comprises a blocking plate (202) for closing one axial end of all the anti-electrical wall core tubes (201), and the axial end surface of the anti-electrical wall shell tube (1021) facing the blocking plate (202) is spaced apart from the blocking plate (202).

6. The anti-electricity wall structure according to claim 5, It is characterized in that It also includes a flow sensor assembly (50), which is arranged at one end of the sealing plate (202) facing away from the anti-electrical wall shell tube (1021); the flow sensor assembly (50) includes a guide tube (501) fixed in the first pipe opening (1016), a magnetic rotor (502) rotatably arranged in the guide tube (501), and a Hall chip (503) arranged outside the anti-electrical wall shell (10); the Hall chip (503) is arranged opposite to the magnetic rotor (502), and the Hall chip (503) is used to detect the rotation speed of the magnetic rotor (502); and the water inlet end of the guide tube (501) is formed with a flared structure.

7. The anti-electricity wall structure according to claim 6, It is characterized in that The side of the blocking plate (202) facing away from the anti-electrical wall shell tube (1021) is a first side (2021); the anti-electrical wall shell (101) has a second side (1017) facing the first side (2021); the first side (2021) and the second side (1017) are spaced apart to form a transition chamber (200); the transition chamber (200) is connected to the outermost annular water channel (100); The first side surface (2021) is provided with at least two second protrusions (2032) distributed at intervals in the circumferential direction, a second opening (2031) is formed between two adjacent second protrusions (2032), and the guide tube (501) is connected to the transition chamber (200) through the second opening (2031).

8. The electric-proof wall structure according to claim 7, It is characterized in that A mounting through pipe (30) is embedded in the first pipe opening (1016); A straight pipe (203) is sandwiched between the installation through pipe (30) and the sealing plate (202), the guide tube (501) is arranged in the straight pipe (203), the second protrusion (2032) is arranged at one axial end of the straight pipe (203) and is partially placed in the straight pipe (203), one end of the guide tube (501) abuts against the second protrusion (2032), and the other end is fixed to the straight pipe (203); or, a first top column (801) is sandwiched between one end of the guide tube (501) and the sealing plate (202), the second opening (2031) is arranged on the first top column (801), and a second top column (802) is sandwiched between the other end of the guide tube (501) and the installation through pipe (30).

9. The anti-electrical wall structure according to claim 7, It is characterized in that An annular convex edge (1012) is provided between the first side surface (2021) and the second side surface (1017), and at least two third openings spaced apart in the circumferential direction are provided on the annular convex edge (1012), and the transition chamber (200) and the second opening (2031) are connected via the third openings.

10. Electric water heater, It is characterized in that It comprises a water heater body and an anti-electricity wall structure as claimed in any one of claims 1 to 9, wherein the water heater body has a water inlet end and a water outlet end, and the anti-electricity wall structure is arranged at the water inlet end or the water outlet end.

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