An electric water heater

Abstract

The present application relates to the technical field of water heater, and more particularly to an electric water heater. The electric water heater comprises: an inner container made of non-metal material; a mounting flange arranged at an axial end of the inner container; a heating assembly arranged at one end of the mounting flange and horizontally extended into the inner container; and a fixing member arranged on an inner wall of the inner container and fixed to the other end of the heating assembly. In the electric water heater, the inner container is made of non-metal material, which has the advantages of simple processing technology and no corrosion compared with a stainless steel or enamel inner container; the fixing member arranged in the inner container can support and fix the other end of the heating assembly, thereby maintaining the distance between the heating assembly and the inner wall of the inner container and avoiding the inner container from being scalded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water heaters, in particular to an electric water heater. BACKGROUND

[0002] The electric water heater comprises an inner container and a heating pipe. The inner container is used as a water storage component. A flange is arranged at the mouth of the inner container. One end of the heating pipe is fixed to the flange, and the other end of the heating pipe extends into the inner container to heat the water storage component. The above-mentioned inner container is mostly made of stainless steel or enamel. The processing technology of such inner containers is complex, and the welding and enamel have a high rejection rate, which can easily cause corrosion of the inner container and even water leakage of the inner container.

[0003] Considering the problems of low insulation coefficient, poor corrosion resistance and high processing cost of the stainless steel or enamel inner container, the industry has begun to use plastic inner containers to replace the stainless steel or enamel inner containers. Due to the material properties of the plastic inner container, it is necessary to ensure that the heating pipe has a certain distance from the inner container during assembly to avoid the inner container being scalded and leaking. However, since the heating pipe is fixed in a cantilever structure, the heating pipe is prone to deformation or shaking, and the inner container is also prone to deformation due to extrusion during transportation, which can cause the distance between the inner container and the heating pipe to become smaller or even contact, and finally cause the inner container to be scalded.

[0004] Therefore, there is an urgent need for an electric water heater to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide an electric water heater that can solve the problem of the inner container being scalded due to the distance between the heating pipe and the inner container becoming smaller or even contacting.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] An electric water heater comprises:

[0008] An inner container made of a non-metallic material;

[0009] A mounting flange arranged at one axial end of the inner container;

[0010] A heating assembly arranged at one end of the mounting flange and horizontally extending into the inner container;

[0011] A fixing member arranged on the inner wall of the inner container and fixing the other end of the heating assembly.

[0012] As an optional solution of the above-mentioned electric water heater, the fixing member comprises:

[0013] A fixing part fixed to the inner wall of the inner container;

[0014] Two clamping parts are oppositely and spacedly arranged on the fixing part, and a clamping space for clamping the heating assembly is formed between the two clamping parts.

[0015] As an alternative of the electric water heater, a recess is arranged on the inner wall of the inner container at a position corresponding to the other end of the heating assembly.

[0016] As an alternative of the electric water heater, a metal isolation piece is arranged on the inner wall of the inner container, and the metal isolation piece is located directly below the heating assembly.

[0017] As an alternative of the electric water heater, the inner container comprises an inner container base body, the inner container base body comprises a first half container and a second half container which are butted along an axial direction, and a sealing assembly is arranged between the butt joint end faces of the first half container and the second half container.

[0018] As an alternative of the electric water heater, the mounting flange is arranged on the first half container, and an axial dimension of the first half container is greater than an axial dimension of the heating assembly along the first half container.

[0019] As an alternative of the electric water heater, the sealing assembly comprises a sealing ring, a butt joint end face of one of the first half container and the second half container is provided with a limiting groove, and a butt joint end face of the other is provided with an abutting part which can extend into the limiting groove, and the abutting part can abut the sealing ring in the limiting groove.

[0020] As an alternative of the electric water heater, the inner container further comprises a reinforcing layer, and the reinforcing layer covers the outer wall of the inner container base body.

[0021] As an alternative of the electric water heater, the reinforcing layer is formed by winding a reinforcing belt around the inner container base body.

[0022] The reinforcing layer comprises the reinforcing belt which extends along the axial direction of the inner container base body.

[0023] As an alternative of the electric water heater, a plurality of limiting lugs are arranged on the outer wall of the inner container base body, the limiting lugs are provided with through holes, and the reinforcing belt which extends along the axial direction of the inner container base body is arranged in the through holes.

[0024] The electric water heater has the following advantages:

[0025] In the electric water heater, the inner container is made of non-metallic material, and has the advantages of simple processing technology and no corrosion compared with a stainless steel or enamel inner container; the fixing piece is arranged in the inner container, and can support and fix the other end of the heating assembly, so as to maintain the distance between the heating assembly and the inner wall of the inner container and avoid the inner container from being scalded. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the water heater inner tank provided in Embodiment 1 of the present invention;

[0027] Figure 2 This is a cross-sectional view of the inner tank of a water heater provided in Embodiment 1 of the present invention. Figure 1 ;

[0028] Figure 3 This is a cross-sectional view of the inner tank of a water heater provided in Embodiment 1 of the present invention. Figure 2 ;

[0029] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0030] Figure 5 yes Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 6 This is a schematic diagram of a mounting lug provided in Embodiment 2 of the present invention;

[0032] Figure 7 This is a schematic diagram of another mounting lug provided in Embodiment 2 of the present invention.

[0033] In the picture:

[0034] 1. Inner liner base; 11. First half-liner; 111. Mounting lug; 1111. Mounting part; 1112. Embedding part; 112. Limiting groove; 12. Second half-liner; 121. Abutting part; 2. Mounting flange; 3. Heating assembly; 4. Bolt and nut assembly; 41. Bolt; 42. Nut; 5. Sealing ring; 6. Fastener; 61. Fixing part; 62. Clamping part. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0036] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0038] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and other orientation or position relationships are based on the orientation or position relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and do not have special meanings.

[0039] Embodiment one

[0040] As shown in Figure 1 and Figure 2 The present embodiment provides an electric water heater, which comprises a shell, a liner arranged in the shell, a mounting flange 2 arranged on the liner, and a heating assembly 3 arranged on the mounting flange 2. The liner serves as a water storage component for containing water, and the heating assembly 3 is powered to heat the water in the liner so as to provide hot water for users.

[0041] Further, a thermal insulation layer is arranged between the shell and the liner, which can prevent heat in the liner from being dissipated outward, thereby improving the heat preservation effect of the hot water in the liner, saving electric energy, and reducing the energy consumption of the electric water heater.

[0042] Optionally, the heating assembly 3 comprises a heating pipe, which is formed by filling an electric heating wire into a seamless metal pipe, filling the gap with magnesium oxide powder having good thermal conductivity and insulation, and then shrinking the pipe, and then processing it into various shapes required by users. It has the advantages of simple structure, high thermal efficiency, good mechanical strength, and good adaptability to harsh environments. The seamless metal pipe can be a carbon steel pipe, a titanium pipe, a stainless steel pipe, or a copper pipe.

[0043] To solve the problem of corrosion and even water leakage of the stainless steel liner and the enamel liner due to poor welding or enamel process, in the present embodiment, the liner is made of non-metallic material, and the liner does not need welding process and enamel process during preparation, which can simplify the processing technology of the liner and reduce the processing difficulty, and can also avoid affecting the service life of the liner due to poor welding or poor enamel.

[0044] In addition, the inner container made of non-metallic material will not corrode, and there is no problem of rusting and water leakage, which can further improve the reliability of the inner container.

[0045] Specifically, as shown in Figure 1 , the inner container includes an inner container body 1 made of a non-metallic material, one end of the inner container body 1 is closed, and the other end forms an inner container opening, the inner container opening is used to install a mounting flange 2, and the mounting flange 2 is used to fix a heating assembly 3.

[0046] Optionally, the inner container body 1 is made of a plastic material, and the inner container body 1 can be formed by an injection molding process.

[0047] As shown in Figure 2 , the heating pipe extends in the overall extension direction. In order to improve the heating efficiency of the electric water heater, the middle part of the heating pipe is inclined to make the end of the heating pipe away from the mounting flange 2 (hereinafter referred to as the free end) close to the inner wall of the bottom of the inner container, so as to heat the water at the bottom of the inner container, and utilize the characteristics of upward flow of hot water and downward flow of cold water to improve the convection of hot water and cold water, so as to improve the heating efficiency of hot water and ensure the uniformity of water temperature in the inner container.

[0048] After the heating pipe is installed, it forms a cantilever structure, the free end of the heating pipe is suspended and is easy to deform or shake, so that the distance between the free end of the heating pipe and the inner wall of the inner container becomes smaller, and even contacts, which is easy to cause the inner container to be scalded.

[0049] In order to solve the above problems, a fixing member 6 is further arranged on the inner wall of the inner container, the fixing member 6 is used to fix the free end of the heating pipe, so as to support the heating pipe, avoid the free end of the heating pipe being too close to the inner wall of the inner container or contacting the inner wall of the inner container, and further play a role in protecting the inner container from being scalded.

[0050] In addition, by arranging the fixing member 6, the distance between the heating pipe and the inner wall of the inner container can be made smaller, which is beneficial to improve the overall performance, such as improving the hot water output rate, heating efficiency and other parameters.

[0051] As shown in Figure 3 and Figure 4 , the fixing member 6 is a clip structure, including a fixing part 61 and two clamping parts 62, the fixing part 61 is fixed to the inner wall of the inner container, the two clamping parts 62 are oppositely and spacedly arranged on the fixing part 61, and a clamping space for clamping the heating pipe is formed between the two clamping parts 62. By clamping the heating pipe by the two clamping parts 62, the free end of the heating pipe can be fixed, and the free end of the heating pipe is prevented from shaking, and the clamping mode is convenient for disassembly and assembly; the fixing part 61 can separate the inner container and the free end of the heating pipe, and prevent the two from contacting.

[0052] Optionally, the fixing member 6 can be formed by bending a sheet metal structure, which has a certain elasticity and can provide a certain clamping force for clamping the heating pipe.

[0053] Further, the clamping portion 62 is provided with a matching curved surface matching the outer wall of the heating pipe, so as to increase the contact area between the clamping portion 62 and the heating pipe, thereby improving the fixing effect of the fixing member 6 on the heating pipe.

[0054] Optionally, the fixing portion 61 can be fixed on the inner wall of the inner container by screws. It can be understood that the screws are screwed into the inner wall of the inner container but do not penetrate the inner container, so as to ensure the sealing effect of the inner container.

[0055] In some embodiments, the inner wall of the inner container is provided with a recess at a position corresponding to the free end of the heating pipe. The recess can provide a certain space for the heating pipe, so that the heating pipe will not contact the inner container even if it is deformed.

[0056] Further, the recess can be long strip-shaped and extend along the length direction of the heating pipe. The width of the recess is slightly larger than the diameter of the heating pipe, so as to avoid affecting the heating efficiency of hot water due to the setting of the recess.

[0057] In some embodiments, the inner wall of the inner container is provided with a metal isolation member located directly below the heating pipe, which is used to separate the inner container and the heating pipe to avoid direct contact between the inner container and the heating pipe, thereby preventing the inner container from being scalded.

[0058] In some embodiments, the fixing member 6 can be a frame body supporting the heating pipe, which can also achieve the purpose of preventing the inner container from being scalded.

[0059] In order to facilitate the installation of the fixing member 6, the heating assembly 3 and other structural members (such as sensor assembly, water inlet pipe, water outlet pipe, etc.) which need to be installed in the inner container, and the processing technology which needs to be carried out in the inner container, the inner container base body 1 in the embodiment includes a first half container 11 and a second half container 12 which are butt-jointed along the axial direction. A sealing assembly is arranged between the butt-jointed end faces of the first half container 11 and the second half container 12, so as to realize the sealed connection of the first half container 11 and the second half container 12. Figure 2 As shown in the figure, one end of the second half container 12 is closed, and the other end is open to form a butt-jointed end; one end of the first half container 11 is provided with an inner container opening, and the other end is open to form a butt-jointed end. The butt-jointed end of the first half container 11 and the butt-jointed end of the second half container 12 are butt-jointed to form the inner container base body 1.

[0060] The cooperation of the first half inner container 11 and the second half inner container 12 makes the inner container base body 1 have a splicing structure. When the electric water heater is assembled, the structural member which needs to be installed with the inner container base body 1 can be assembled with the first half inner container 11 or the second half inner container 12, which is convenient to operate. Similarly, the processing technology which needs to be performed in the inner container can be first performed in the first half inner container 11 or the second half inner container 12 before the splicing of the inner container base body 1, and then the splicing and fixing of the inner container base body 1 is performed, which can solve the problem that the whole inner container base body 1 is inconvenient to operate, and reduces the assembly and processing difficulty.

[0061] In the embodiment, the first half inner container 11 can be used to install the heating assembly 3. In order to avoid that the heating assembly 3 is damaged by knocking during the transportation after the heating assembly 3 is assembled with the first half inner container 11, the axial dimension of the first half inner container 11 is greater than the axial dimension of the heating assembly 3 along the first half inner container 11, so that the heating assembly 3 can be completely located in the first half inner container 11 after the heating assembly 3 is assembled with the first half inner container 11, and the heating assembly 3 is prevented from contacting the structure outside the first half inner container 11, which is beneficial to protect the heating assembly 3.

[0062] It can be understood that the specific size of the first half inner container 11 can be set according to actual needs.

[0063] In some embodiments, the first half inner container 11 and the second half inner container 12 can be used to install the structural member located in the inner container, and the size of the first half inner container 11 and the second half inner container 12 can be adjusted according to the actual shape and size of the installed structural member, so as to play a role in protecting the structural member inside.

[0064] Further, the splicing end faces of the first half inner container 11 and the second half inner container 12 can be flat surfaces, or can be designed as undulating surfaces according to actual needs, as long as the splicing end face of the first half inner container 11 is matched with the splicing end face of the second half inner container 12.

[0065] As shown in Figure 2 and Figure 5 , the first half inner container 11 and the second half inner container 12 are fixedly connected through the bolt and nut assembly 4. One end of the first half inner container 11 close to the splicing end face is provided with a mounting lug 111, and one end of the second half inner container 12 close to the splicing end face is also provided with a mounting lug 111. The mounting lugs 111 on the two half inner containers are correspondingly arranged and fixedly connected through the bolt and nut assembly 4. Specifically, the mounting lug 111 is provided with a mounting hole, the bolt 41 passes through the mounting holes on the corresponding two mounting lugs 111 in sequence and is threadedly connected with the nut 42. By tightening the bolt 41 and the nut 42, the first half inner container 11 and the second half inner container 12 can be fixedly connected.

[0066] In this embodiment, the first half-capsule 11 and the second half-capsule 12 are provided with a plurality of mounting lugs 111 at intervals along the circumference, and each mounting lug 111 is provided with a mounting hole in order to improve the fixing effect of the first half-capsule 11 and the second half-capsule 12.

[0067] In some embodiments, the mounting lug 111 can be an annular lug extending circumferentially along the inner liner base 1, that is, both the ends of the first half-liner 11 and the second half-liner 12 are provided with an annular lug, and multiple mounting holes are provided at intervals on the annular lug, each mounting hole is fitted with a bolt 41 to improve the fixing effect of the first half-liner 11 and the second half-liner 12.

[0068] To achieve a sealed connection between the first half-liner 11 and the second half-liner 12, the sealing assembly includes a sealing ring 5, which is disposed between the splicing end faces of the first half-liner 11 and the second half-liner 12. By deforming under compressive force, the sealing ring 5 can seal the splicing gap between the first half-liner 11 and the second half-liner 12, thereby achieving a sealing effect.

[0069] Optionally, the sealing ring 5 can be an O-ring, which is easy to install and replace.

[0070] To further improve the sealing effect of the first half-tank 11 and the second half-tank 12, such as Figure 5 As shown, a limiting groove 112 is provided on the splicing end face of the first half-liner 11, and an abutment part 121 is provided on the splicing end face of the second half-liner 12, which can extend into the limiting groove 112. The abutment part 121 can abut the sealing ring 5 in the limiting groove 112. By setting the limiting groove 112, the sealing ring 5 can be positioned, avoiding the problem of poor sealing caused by the displacement of the sealing ring 5. Through the cooperation of the abutment part 121 and the limiting groove 112, it can be ensured that the end face of the first half-liner 11 abuts against the end face of the second half-liner 12, while pressing the sealing ring 5, which is conducive to improving the sealing effect. In addition, the setting of the abutment part 121 makes the splicing surface of the first half-liner 11 and the second half-liner 12 not planar, that is, the splicing gap formed is not linear along the radial direction of the inner liner base 1, which is conducive to further improving the sealing effect.

[0071] In other embodiments, the abutment portion 121 may be disposed on the splicing end face of the first half-tank 11, and correspondingly, the limiting groove 112 may be disposed on the splicing end face of the second half-tank 12, which can also improve the sealing effect of the first half-tank 11 and the second half-tank 12.

[0072] In some embodiments, the sealing assembly may further include a labyrinth sealing structure disposed on the splicing end face of the first half-tank 11 and / or the second half-tank 12. Exemplarily, the labyrinth sealing structure may include a labyrinth water trough disposed on the splicing end face of the first half-tank 11 and / or the second half-tank 12.

[0073] In order to improve the pressure bearing capacity of the inner container, the inner container further comprises a reinforcing layer covering the outer wall of the inner container base 1. The reinforcing layer can improve the strength of the water heater so as to meet the use requirements.

[0074] Optionally, the reinforcing layer can be made of fiber material, which has good toughness and can improve the pressure bearing capacity of the inner container of the water heater.

[0075] Optionally, the cross-sectional shape of the inner container can be circular, oval or flat, etc., which is not limited in the embodiment.

[0076] Embodiment Two

[0077] Since the inner container base 1 is made of plastic material and has a spliced structure, the inner container base 1 may be expanded at the spliced part of the first half container 11 and the second half container 12 due to water pressure or thermal expansion and deformation during work, which affects the sealing effect. In order to solve the above problems, the embodiment provides a water heater, which is further improved on the basis of the first embodiment to further optimize the sealing effect of the inner container of the water heater.

[0078] In the embodiment, the mounting lug 111 is made of metal material and is embedded in the first half container 11 or the second half container 12 by welding. By using the mounting lug 111 made of metal material, on the one hand, the influence of temperature rise on the mounting lug 111 can be reduced, so that the mounting lug 111 is not easy to be expanded by heat, thereby ensuring the cooperation effect of the mounting lug 111 on both sides; on the other hand, the mounting lug 111 is made of metal material, which has good strength and is not easy to be deformed under force, thereby avoiding the deformation of the mounting lug 111 due to the pressure bearing of the inner container base 1, thereby ensuring the fixing effect of the first half container 11 and the second half container 12, and thereby ensuring the sealing effect of the first half container 11 and the second half container 12.

[0079] Further, in order to avoid the influence of heat or pressure bearing of the inner container base 1 on the welding fixing effect of the inner container base 1 and the mounting lug 111, as shown in Figure 6 , the mounting lug 111 comprises a mounting portion 1111 and an embedded portion 1112. The embedded portion 1112 is embedded in the inner container base 1. The embedded portion 1112 and the mounting portion 1111 are in T shape as a whole, so as to increase the contact area of the embedded portion 1112 and the inner container base 1, thereby improving the fixing effect of the mounting lug 111 and the inner container base 1, so as to avoid the separation of the mounting lug 111 and the inner container base 1.

[0080] Optionally, the embedded portion 1112 can be a flat plate structure as shown in Figure 6 , or an arc plate structure as shown in Figure 7 .

[0081] Embodiment Three

[0082] The embodiment provides a water heater which is further improved on the basis of the water heater in the first embodiment or the second embodiment, so as to reduce the influence of the water pressure or thermal expansion and deformation of the inner container base body 1 on the sealing effect.

[0083] Specifically, the outer wall of the first half container 11 is provided with a clamping hook, the outer wall of the second half container 12 is provided with a hook joint part matched with the clamping hook, and the clamping hook can be matched with the hook joint part after the first half container 11 and the second half container 12 are spliced and fixed, and the force of the second half container 12 towards the first half container 11 is applied, so as to further improve the fixing effect and reliability of the first half container 11 and the second half container 12. When the inner container base body 1 is subjected to water pressure or expansion and deformation, the matching of the clamping hook and the hook joint part can avoid the expansion of the first half container 11 and the second half container 12 at the splicing position, so as to improve the sealing effect of the first half container 11 and the second half container 12.

[0084] Optionally, the clamping hook can be made of a metal material, and one end of the clamping hook is embedded in the inner container base body 1 in a fusion manner. The clamping hook made of a metal material can improve the strength of the clamping hook and improve the fixing effect of the first half container 11 and the second half container 12 after the clamping hook is matched with the hook joint part.

[0085] Similarly, the hook joint part can be fixed on the second half container 12 in a fusion manner, and the hook joint part can also be made of a metal material to improve the strength of the hook joint part.

[0086] Optionally, the clamping hook and the hook joint part can be provided with multiple groups, and the multiple groups are arranged at intervals along the circumference of the inner container base body 1, so as to further improve the fixing effect.

[0087] Embodiment Four

[0088] The embodiment provides a water heater which is further improved on the basis of the water heater in the first embodiment, the second embodiment or the third embodiment, so as to reduce the influence of the water pressure or thermal expansion and deformation of the inner container base body 1 on the sealing effect.

[0089] In the embodiment, the reinforcing layer is formed by winding the reinforcing belt on the inner container base body 1, and the reinforcing layer includes the reinforcing belt extending along the axial direction of the inner container base body 1. By arranging the reinforcing belt extending along the axial direction of the inner container base body 1, the splicing force of the first half container 11 and the second half container 12 can be improved, so as to offset the force generated by the pressure bearing, thermal expansion or deformation of the inner container base body 1, thereby guaranteeing the fixing and sealing effect of the first half container 11 and the second half container 12.

[0090] The reinforcing belt is made of a fiber material and has a certain toughness, which is beneficial to maintaining the pre-pressure provided to the first half container 11 and the second half container 12, and further guarantees the fixing and sealing effect of the first half container 11 and the second half container 12.

[0091] It can be understood that at least part of the reinforcing bands extends along the axial direction of the inner container base 1, and part of the reinforcing bands can extend along the circumferential direction of the inner container base 1, or at an angle with the axial direction of the inner container base 1.

[0092] For convenience of introduction, the reinforcing bands extending along the axial direction of the inner container base 1 are referred to as longitudinal reinforcing bands. In order to limit the extending direction of the longitudinal reinforcing bands, a plurality of limiting lugs are arranged on the outer wall of the inner container base 1, and the limiting lugs are provided with through holes, and the longitudinal reinforcing bands are arranged in the through holes. By arranging the limiting lugs, the extending direction of the longitudinal reinforcing bands can be limited, which is beneficial to guarantee the fixing effect of the longitudinal reinforcing bands on the first half container 11 and the second half container 12.

[0093] In other embodiments, the non-metallic inner container is further provided with hoops, and the hoops can hoop the non-metallic inner container along the axial direction of the non-metallic inner container to avoid the first half container 11 and the second half container 12 from expanding. The hoops can adopt any structure in the prior art, and will not be specifically introduced in the present embodiment.

[0094] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An electric water heater, characterised in that, The utility model relates to a kind of heating pipe, which comprises: Inner container, made of non-metallic material; Mounting flange (2), provided at one axial end of the inner container; Heating assembly (3), one end is provided on the mounting flange (2), and the other end horizontally extends into the inner container;The heating assembly (3) includes a heating pipe, and the middle part of the heating pipe is inclined to make the end of the heating pipe away from the mounting flange (2) close to the bottom wall of the inner container; Fixing member (6), provided on the inner wall of the inner container, and fixing the other end of the heating assembly (3);The fixing member (6) includes a fixing part (61) and two clamping parts (62), the fixing part (61) is fixed to the inner wall of the inner container, and the two clamping parts (62) are oppositely and spacedly provided on the fixing part (61), and the clamping space for clamping the heating assembly (3) is formed between the two clamping parts (62), and the two clamping parts (62) are provided with an adaptive curved surface matched with the outer wall of the heating pipe; The inner wall of the inner container is provided with a recess at a position corresponding to the other end of the heating assembly (3); The inner wall of the inner container is provided with a metal isolation member, which is located directly below the heating assembly (3) and separates the inner container from the heating pipe.

2. The electric water heater according to claim 1, wherein The inner container includes an inner container base body (1), and the inner container base body (1) includes a first half container (11) and a second half container (12) which are butted in the axial direction, and a sealing assembly is arranged between the butt joint end faces of the first half container (11) and the second half container (12).

3. The electric water heater according to claim 2, wherein The mounting flange (2) is arranged on the first half container (11), and the axial dimension of the first half container (11) is greater than the dimension of the heating assembly (3) in the axial direction of the first half container (11).

4. The electric water heater according to claim 2, wherein The sealing assembly includes a sealing ring (5), one of the butt joint end faces of the first half container (11) and the second half container (12) is provided with a limiting groove (112), and the other butt joint end face is provided with an abutting portion (121) which can extend into the limiting groove (112), and the abutting portion (121) can abut the sealing ring (5) in the limiting groove (112).

5. The electric water heater according to claim 2, wherein The inner container further includes a reinforcing layer, and the reinforcing layer covers the outer wall of the inner container base body (1).

6. The electric water heater according to claim 5, wherein The reinforcing layer is formed by winding a reinforcing belt around the inner container base body (1). The reinforcing layer includes the reinforcing belt which extends in the axial direction of the inner container base body (1).

7. The electric water heater according to claim 6, wherein A plurality of limiting lugs are arranged on the outer wall of the inner container base body (1), and the limiting lugs are provided with through holes, and the reinforcing belt which extends in the axial direction of the inner container base body (1) is arranged in the through holes.

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