Electric water heater

Abstract

The invention belongs to the technical field of electric appliances, and particularly relates to an electric water heater. The heat insulation liner bracket cushion block is internally provided with a fastening nut and is arranged on the inner side of the liner bracket; the heat insulation outer wall hanging frame cushion block is arranged between the outer wall hanging frame and the inner container, and the heat insulation outer wall hanging frame cushion block and the outer wall hanging frame are connected through hanging frame screws; the outer wall hanging frame, the heat insulation outer wall hanging frame cushion block, the inner container support and the heat insulation inner container support cushion block are connected through the hanging frame bolts; the inner container supporting blocks are arranged at the end socket end of the inner container in the circumferential direction and abut against the inner container and the water heater shell; the inner container is sleeved with a foaming cushion layer. The heat preservation cotton is arranged at the position of a container opening flange plate of the inner container in the electrical room; and the hard plastic sleeve is arranged on the water heater shell and is respectively sleeved on the water inlet pipe and the water outlet pipe, and gaps between an inner hole of the hard plastic sleeve and the water inlet pipe and the water outlet pipe are 0.3 mm. The number of temperature running points of the electric water heater is reduced, the heat preservation performance of the electric water heater is improved, and energy consumption waste is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of electrical appliances, and particularly relates to an electric water heater. Background Art

[0002] An electric water heater is a water heater that uses electricity as an energy source for heating. The most common type of electric water heater is a storage type (also known as a volumetric or heat storage type), which is usually hung on a wall through an external wall hanger. Inside the shell of the storage type electric water heater, there is an inner tank for heating and storing hot water.

[0003] Performing a heat dissipation simulation analysis on the electric water heater, the analysis results show that there are multiple temperature runaway points in the electric water heater, resulting in poor heat preservation performance of the electric water heater and causing energy consumption waste. Summary of the Invention

[0004] In order to solve the above problems in the prior art, that is, to reduce the number of temperature runaway points of the electric water heater, improve the heat preservation performance of the electric water heater, and reduce energy consumption waste, this application provides an electric water heater.

[0005] An embodiment of this application provides an electric water heater, including:

[0006] An external wall hanger for hanging the electric water heater on a wall;

[0007] An inner tank support provided on the outer wall of the inner tank;

[0008] It further includes:

[0009] A heat-insulating inner tank support pad provided inside the inner tank support, and a fastening nut is embedded inside the heat-insulating inner tank support pad;

[0010] A heat-insulating external wall hanger pad provided between the external wall hanger and the inner tank. A part of the heat-insulating external wall hanger pad is sandwiched between the external wall hanger and the inner tank support. The heat-insulating external wall hanger pad and the external wall hanger are jointly connected by a hanger screw;

[0011] A hanger bolt sequentially passes through the external wall hanger, a part of the heat-insulating external wall hanger pad, and the inner tank support, and is threadedly connected to the fastening nut. The hanger bolt connects the external wall hanger, the heat-insulating external wall hanger pad, the inner tank support, and the heat-insulating inner tank support pad.

[0012] In an alternative technical solution of the above electric water heater, at least one end of the heat-insulating inner tank support pad is provided with an opening, and the opening extends to the fastening nut.

[0013] In an alternative technical solution of the above electric water heater, there is a gap between the heat-insulating inner tank support pad and the inner tank.

[0014] In the above optional technical solution of an electric water heater, the heat-insulating external wall hanging bracket cushion is hollow inside.

[0015] In the above optional technical solution of an electric water heater, it further includes a plurality of inner tank support blocks. All the inner tank support blocks are circumferentially arranged at the head end of the inner tank. All the inner tank support blocks are tightly abutted against the inner tank and the water heater housing, and there is a gap between each of the inner tank support blocks; a foamed cushion layer is sleeved on the inner tank, and the foamed cushion layer is simultaneously tightly abutted against the inner tank and the water heater housing.

[0016] In the above optional technical solution of an electric water heater, all the inner tank support blocks are circumferentially evenly distributed about the axis of the inner tank.

[0017] In the above optional technical solution of an electric water heater, it further includes a rigid plastic sleeve. The rigid plastic sleeve is arranged on the water heater housing. The rigid plastic sleeve respectively sleeves the water inlet pipe and the water outlet pipe, and the gap between the inner hole of the rigid plastic sleeve and the water inlet pipe and the water outlet pipe is 0.3 mm.

[0018] In the above optional technical solution of an electric water heater, a gap is provided between the rigid plastic sleeve and the inner tank.

[0019] In the above optional technical solution of an electric water heater, the space inside the water heater housing, outside the foamed cushion layer and all the inner tank support blocks is filled with foaming material to form a foaming support member;

[0020] The gap between the rigid plastic sleeve and the inner tank is also filled with the foaming material to form a foaming support member.

[0021] In the above optional technical solution of an electric water heater, it further includes heat-insulating cotton. The heat-insulating cotton is arranged at the flange position of the mouth of the inner tank inside the electrical chamber.

[0022] Those skilled in the art can understand that the embodiment of the present application provides an electric water heater, including: an external wall hanger for fixedly hanging the electric water heater on a wall; an inner tank bracket fixedly arranged on the outer wall of the inner tank; a heat-insulating inner tank bracket cushion block arranged inside the inner tank bracket, and a fastening nut is fixedly embedded inside the heat-insulating inner tank bracket cushion block; a heat-insulating external wall hanger cushion block arranged between the external wall hanger and the inner tank, a part of the heat-insulating external wall hanger cushion block is clamped between the external wall hanger and the inner tank bracket, and the heat-insulating external wall hanger cushion block and the external wall hanger are fixedly connected with a hanger screw; a hanger bolt sequentially passes through the external wall hanger, a part of the heat-insulating external wall hanger cushion block, and the inner tank bracket, and is threadedly connected with the fastening nut, and the hanger bolt fixedly connects the external wall hanger, the heat-insulating external wall hanger cushion block, the inner tank bracket, and the heat-insulating inner tank bracket cushion block. A plurality of inner tank support blocks are circumferentially arranged at the head end of the inner tank, all the inner tank support blocks tightly abut against the inner tank and the water heater shell, and there is a spacing between each inner tank support block; a foaming cushion layer is sleeved on the inner tank, and the foaming cushion layer tightly abuts against the inner tank and the water heater shell at the same time. Heat-insulating cotton is arranged at the position of the flange of the inner tank opening inside the electrical chamber. A hard plastic sleeve is arranged on the water heater shell, and the hard plastic sleeve sleeves the water inlet pipe and the water outlet pipe respectively, and the gap between the inner hole of the hard plastic sleeve and the water inlet pipe and the water outlet pipe is 0.3 mm.

[0023] For the traditional external wall hanger, two hanger bolts are arranged on each external wall hanger, and the hanger bolts are threadedly connected to the self-tapping threads of the inner tank bracket; in the present application, one of the hanger bolts and one inner tank bracket are cancelled (this reduces the number of heat leakage points), and it is changed to only use one hanger bolt to connect the external wall hanger and the inner tank bracket, and the fastening nut is directly arranged inside the heat-insulating inner tank bracket cushion block, and the hanger bolt has no direct contact with the inner tank bracket, reducing the heat leakage amount. A heat-insulating external wall hanger cushion block for balancing and supporting is arranged at the position of the cancelled inner tank bracket, and one hanger screw is used to connect the external wall hanger and the heat-insulating external wall hanger cushion block, and the heat-insulating external wall hanger cushion block abuts against the outer wall of the inner tank, also reducing the heat leakage amount.

[0024] The inner tank support blocks can keep the inner tank centered inside the water heater shell, ensure that the foaming cushion layer is more evenly distributed inside the water heater shell, and make the heat preservation of each position of the electric water heater more uniform.

[0025] The heat-insulating cotton can reduce the heat leakage amount at the inner tank opening and improve the heat preservation performance of the inner tank.

[0026] Since the gap between the inner hole of the hard plastic sleeve and the water inlet pipe and the water outlet pipe is 0.3 mm, therefore, the water inlet pipe and the water outlet pipe can be more centered, and further the inner tank can be centered inside the water heater shell, ensuring that the foaming cushion layer is more evenly distributed inside the water heater shell, and making the heat preservation of each position of the electric water heater more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments in line with this application, and are used together with the specification to explain the principles of this application. Obviously, the accompanying drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0028] Figure 1 is a schematic structural diagram of an electric water heater provided by an embodiment of this application;

[0029] Figure 2 is an exploded structural diagram of the separation of the outer wall hanging bracket and the heat-insulating outer wall hanging bracket pad in the electric water heater provided by an embodiment of this application;

[0030] Figure 3 is an exploded structural diagram of the separation of the heat-insulating outer wall hanging bracket pad, the heat-insulating inner tank support pad and the inner tank support in the electric water heater provided by an embodiment of this application;

[0031] Figure 4 is a schematic structural diagram of the inner tank support block in the electric water heater provided by an embodiment of this application;

[0032] Figure 5 is a schematic structural diagram of the hard plastic sleeve in the electric water heater provided by an embodiment of this application.

[0033] Reference numerals:

[0034] 100 - Water heater shell;

[0035] 200 - Inner tank;

[0036] 210 - Inner tank support;

[0037] 220 - Inlet pipe;

[0038] 230 - Outlet pipe;

[0039] 300 - Outer wall hanging bracket;

[0040] 310 - Hanging bracket bolt;

[0041] 320 - Hanging bracket screw;

[0042] 400 - Heat-insulating inner tank support pad;

[0043] 410 - Fixed buckle;

[0044] 500 - Heat-insulating outer wall hanging bracket pad;

[0045] 600 - Inner tank support block;

[0046] 700 - Hard plastic sleeve;

[0047] 710 - Fixed jaw;

[0048] 720 - Convex edge.

[0049] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be a more detailed description hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0050] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0051] In the specification and claims of the present application and the above - mentioned drawings, terms such as "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein, for example.

[0052] In the embodiments of the present application, words such as "exemplarily" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplarily" or "for example" in the present application should not be construed as being more alternative or more advantageous than other embodiments or design solutions. Rather, the use of words such as "exemplarily" or "for example" is intended to present relevant concepts in a specific manner.

[0053] As described in the background art, an electric water heater is a water heater that uses electricity as an energy source for heating. The most common type of electric water heater is a storage type (also known as a volumetric type or heat - storage type), which is usually hung on a wall through an external wall hanger. An inner tank is provided inside the shell of the storage - type electric water heater for heating and storing hot water.

[0054] Performing a heat - dissipation simulation analysis on the electric water heater, the analysis results show that there are multiple heat - leakage points in the electric water heater, resulting in poor heat - preservation performance of the electric water heater and causing energy - consumption waste.

[0055] Therefore, in order to improve or solve the above technical problems, the embodiments of the present application provide an electric water heater. In the technical solution provided by the embodiments of the present application, compared with the traditional structure where each external wall hanger is equipped with two hanger bolts and an inner tank support, one of the hanger bolts and one inner tank support in the present application are cancelled (this reduces the number of heat leakage points), and it is changed to only use one hanger bolt to connect the external wall hanger and the inner tank support. Moreover, the fastening nut is directly arranged inside the heat insulation inner tank support pad, and the hanger bolt does not directly contact the inner tank support, reducing the heat leakage amount. At the position where the inner tank support is cancelled, a heat insulation external wall hanger pad for balancing and supporting is arranged, and one hanger screw is used to connect the external wall hanger and the heat insulation external wall hanger pad. The heat insulation external wall hanger pad abuts against the outer wall of the inner tank, also reducing the heat leakage amount.

[0056] A plurality of inner tank support blocks are circumferentially arranged at the head end of the inner tank. All the inner tank support blocks tightly abut against the inner tank and the water heater shell, and there is a gap between each inner tank support block; a foaming cushion layer is sleeved on the inner tank, and the foaming cushion layer tightly abuts against the inner tank and the water heater shell at the same time. The inner tank support blocks can keep the inner tank centered inside the water heater shell, ensuring that the foaming cushion layer is more evenly distributed inside the water heater shell, and making the heat preservation of each position of the electric water heater more uniform.

[0057] Thermal insulation cotton is arranged at the position of the flange of the inner tank opening inside the electrical chamber. The thermal insulation cotton can reduce the heat leakage amount at the inner tank opening and improve the heat preservation performance of the inner tank.

[0058] A rigid plastic sleeve is arranged on the water heater shell, and the rigid plastic sleeve sleeves the water inlet pipe and the water outlet pipe respectively. The gap between the inner hole of the rigid plastic sleeve and the water inlet pipe and the water outlet pipe is 0.3 mm. Therefore, the water inlet pipe and the water outlet pipe can be kept more centered, and further the inner tank can be kept centered inside the water heater shell, ensuring that the foaming cushion layer is more evenly distributed inside the water heater shell, and making the heat preservation of each position of the electric water heater more uniform.

[0059] The following refers to Figures 1 - 5 Describe in detail an electric water heater provided by the embodiments of the present application.

[0060] Figure 1 is a schematic structural diagram of the electric water heater provided by the embodiments of the present application, Figure 2 is an exploded structural diagram of the separation of the external wall hanger 300 and the heat insulation external wall hanger pad 500 in the electric water heater provided by the embodiments of the present application. Please refer to Figure 1 and Figure 2, an embodiment of the present application provides an electric water heater, including: a water heater housing 100 and an inner tank 200, and the inner tank 200 is arranged inside the water heater housing 100. It further includes an external wall hanging bracket 300 for fixedly hanging the electric water heater on a wall. A liner bracket 210 is fixedly connected to the outer wall of the inner tank 200. An insulating liner bracket spacer 400 is arranged inside the liner bracket 210, and a fastening nut is fixedly embedded inside the insulating liner bracket spacer 400. An insulating external wall hanging bracket spacer 500 is arranged between the external wall hanging bracket 300 and the inner tank 200. A part of the insulating external wall hanging bracket spacer 500 is clamped between the external wall hanging bracket 300 and the liner bracket 210. The insulating external wall hanging bracket spacer 500 and the external wall hanging bracket 300 are fixedly connected together with a hanging bracket screw 320. The hanging bracket screw 320 passes through the external wall hanging bracket 300 and is screwed into the inside of the insulating external wall hanging bracket spacer 500. It further includes a hanging bracket bolt 310. The hanging bracket bolt 310 sequentially passes through the external wall hanging bracket 300, a part of the insulating external wall hanging bracket spacer 500, and the liner bracket 210, and is threadedly connected to the fastening nut. The hanging bracket bolt 310 fixedly connects the external wall hanging bracket 300, the insulating external wall hanging bracket spacer 500, the liner bracket 210, and the insulating liner bracket spacer 400.

[0061] Specifically, for the traditional external wall hanging bracket 300, two hanging bracket bolts 310 are arranged on each external wall hanging bracket 300, and the hanging bracket bolts 310 are threadedly connected to the self-tapping threads of the liner bracket 210; in this application, one of the hanging bracket bolts 310 and one liner bracket 210 on the external wall hanging bracket 300 are cancelled (this reduces the number of heat leakage points), and it is changed to only use one hanging bracket bolt 310 to connect the external wall hanging bracket 300 and the liner bracket 210, and the fastening nut is directly embedded inside the insulating liner bracket spacer 400. The hanging bracket bolt 310 has no direct contact with the liner bracket 210, reducing the heat leakage amount. An insulating external wall hanging bracket spacer 500 that plays a balancing and supporting role is arranged at the position where the liner bracket 210 is cancelled. One hanging bracket screw 320 is used to connect the external wall hanging bracket 300 and the insulating external wall hanging bracket spacer 500. The insulating external wall hanging bracket spacer 500 abuts against the outer wall of the inner tank 200, also reducing the heat leakage amount.

[0062] Please refer to Figure 2 , in some embodiments provided by the present application, exemplarily, both the insulating liner bracket spacer 400 and the insulating external wall hanging bracket spacer 500 are made of heat-insulating raw materials. Specifically, they can be aluminosilicate composite raw materials, phenolic foam raw materials, or extruded polystyrene foam raw materials.

[0063] Please refer to Figure 2, in some embodiments provided by the present application, exemplarily, at least one end of the heat insulation inner tank support pad 400 is provided with an opening that extends to the fastening nut. Specifically, there is a possibility that the fastening nut is damaged by slipping of the threads. Through the opening provided at the end of the heat insulation inner tank support pad 400, it is convenient to replace the fastening nut accurately.

[0064] Figure 3 FIG. is an exploded structural schematic diagram of the heat insulation outer wall hanging bracket pad 500, the heat insulation inner tank support pad 400 and the inner tank support 210 separated from each other in the electric water heater provided by the embodiment of the present application. Please refer to Figure 2 and Figure 3 , in some embodiments provided by the present application, exemplarily, there is a spacing between the heat insulation inner tank support pad 400 and the inner tank 200. That is to say, the heat insulation inner tank support pad 400 does not directly contact the inner tank 200, reducing the heat dissipation area of the inner tank 200 and improving the heat preservation performance of the inner tank 200.

[0065] Please refer to Figure 2 and Figure 3 , in some embodiments provided by the present application, exemplarily, the interior of the heat insulation outer wall hanging bracket pad 500 is provided with a hollow structure. Specifically, this measure not only reduces the manufacturing cost of the heat insulation outer wall hanging bracket pad 500, but also reduces the contact area between the heat insulation outer wall hanging bracket pad 500 and the inner tank 200, reducing the heat leakage amount of the inner tank 200 and improving the heat preservation performance of the inner tank 200.

[0066] Please refer to Figure 3 , in some embodiments provided by the present application, exemplarily, one end of the heat insulation outer wall hanging bracket pad 500 is fixedly connected to one end of the heat insulation inner tank support pad 400. That is to say, the heat insulation outer wall hanging bracket pad 500 and the heat insulation inner tank support pad 400 jointly clamp the inner tank support 210; fixing buckles 410 are integrally formed on both the left and right sides of the heat insulation inner tank support pad 400 facing the inner tank 200, and the fixing buckles 410 are engaged and tightly abutted with the inner tank support 210. Specifically, during the process of assembling the electric water heater, since the heat insulation outer wall hanging bracket pad 500 and the heat insulation inner tank support pad 400 can jointly clamp the inner tank support 210, pre-assembly of the heat insulation outer wall hanging bracket pad 500, the heat insulation inner tank support pad 400 and the inner tank support 210 is achieved before assembling the hanging bracket bolt 310, improving the assembly efficiency of the electric water heater.

[0067] Figure 4 FIG. is a structural schematic diagram of the inner tank support block 600 in the electric water heater provided by the embodiment of the present application. Please refer to Figure 1 and Figure 4, in some embodiments provided by the present application, exemplarily, a plurality of inner tank support blocks 600 are circumferentially and uniformly arranged at the head end of the inner tank 200. In this embodiment, there are three inner tank support blocks 600, and all the inner tank support blocks 600 are fixedly connected to the water heater housing 100. Exemplarily, the inner tank support blocks 600 and the water heater housing 100 can be integrally formed or welded, and there is the same spacing between each inner tank support block 600. The inner tank 200 is sleeved with a foaming cushion layer, and the foaming cushion layer tightly abuts against both the inner tank 200 and the water heater housing 100 at the same time.

[0068] Specifically, the inner tank support blocks 600 can keep the inner tank 200 centered inside the water heater housing 100, ensuring that the foaming cushion layer is more evenly distributed inside the water heater housing 100, and making the heat preservation of each position of the electric water heater more uniform.

[0069] Please refer to Figure 1 and Figure 4 , in some embodiments provided by the present application, exemplarily, inside the water heater housing 100, the space outside the foaming cushion layer and all the inner tank support blocks 600 is filled with foaming material. Specifically, the thermal conductivity coefficient of the foaming material is much lower than that of the foaming cushion layer. Therefore, the heat preservation performance of the foaming material is better. Filling the foaming material in the space outside the foaming cushion layer and all the inner tank support blocks 600 can further improve the heat preservation performance of the electric water heater.

[0070] Please refer to Figure 1 , in some embodiments provided by the present application, exemplarily, heat preservation cotton is arranged at the position of the flange of the inner tank opening of the inner tank 200 inside the electrical chamber, and the heat preservation cotton is made of polyester fiber raw material. Specifically, the heat preservation cotton can reduce the heat loss at the opening of the inner tank 200 and improve the heat preservation performance of the inner tank 200.

[0071] Figure 5 is the structural schematic diagram of the rigid plastic sleeve 700 in the electric water heater provided by the embodiment of the present application. Please refer to Figure 1 , Figure 2 and Figure 5 , in some embodiments provided by the present application, exemplarily, a rigid plastic sleeve 700 is arranged on the water heater housing 100. Specifically, a plurality of circumferentially and uniformly arranged fixing claws 710 are integrally formed on the outer peripheral wall of the rigid plastic sleeve 700. The fixing claws 710 are clamped inside the water heater housing 100 and tightly abut against the inner wall of the water heater housing 100. A convex edge 720 is integrally formed at the outer end of the rigid plastic sleeve 700, and the convex edge 720 is located outside the water heater housing 100 and tightly abuts against the outer wall of the water heater housing 100. The rigid plastic sleeve 700 sleeves the water inlet pipe 220 and the water outlet pipe 230 respectively. The gap between the inner hole of the rigid plastic sleeve 700 and the water inlet pipe 220 and the water outlet pipe 230 is 0.3 mm, and there is a foaming gap between the rigid plastic sleeve 700 and the inner tank 200.

[0072] Specifically, since the clearance between the inner hole of the rigid plastic sleeve 700 and the water inlet pipe 220 and the water outlet pipe 230 is 0.3 mm, the water inlet pipe 220 and the water outlet pipe 230 can be better centered, and then the inner tank 200 can be centered inside the water heater housing 100, ensuring that the foaming cushion layer is more evenly distributed inside the water heater housing 100, making the heat preservation of each position of the electric water heater more uniform. In view of the fact that there is a foaming gap between the rigid plastic sleeve 700 and the inner tank 200, a part of the foaming material can be allowed to be filled at this position, ensuring uniform heat dissipation of each position of the whole electric water heater while reducing the heat leakage at the water inlet pipe 220 and the water outlet pipe 230.

[0073] The embodiments or implementation manners in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0074] It should be noted that the embodiments referred to as "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. in the specification may include specific features, structures or characteristics, but not necessarily each embodiment includes such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining specific features, structures or characteristics with an embodiment, implementing such features, structures or characteristics in combination with other embodiments, whether explicitly or implicitly described, is within the knowledge scope of those skilled in the art.

[0075] Generally speaking, terms should be understood at least in part by their use in the context. For example, at least in part according to the context, the term "one or more" used in the text can be used to describe any feature, structure or characteristic in the sense of a singular, or can be used to describe a combination of features, structures or characteristics in the sense of a plural. Similarly, at least in part according to the context, terms such as "a" or "the" can also be understood as conveying a singular usage or a plural usage.

[0076] It should be easily understood that the terms "on...", "above...", and "over..." in this disclosure should be interpreted in the broadest way, so that "on..." not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above..." or "over..." not only includes the meaning of "above or over something", but can also include the meaning of "above or over something" without intermediate features or layers therebetween (that is, directly on something).

[0077] In addition, for ease of description, the text may use spatial relative terms, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used in the text may be interpreted accordingly as well.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric water heater, comprising: An external wall hanger for hanging the electric water heater on a wall; An inner tank bracket provided on the outer wall of the inner tank; Characterized in that it further comprises: A heat-insulating inner tank bracket cushion block provided inside the inner tank bracket, and a fastening nut is embedded inside the heat-insulating inner tank bracket cushion block; A heat-insulating external wall hanger cushion block provided between the external wall hanger and the inner tank, a part of the heat-insulating external wall hanger cushion block is clamped between the external wall hanger and the inner tank bracket, and a hanger screw is commonly connected to the heat-insulating external wall hanger cushion block and the external wall hanger; A hanger bolt sequentially passes through the external wall hanger, a part of the heat-insulating external wall hanger cushion block, the inner tank bracket, and is threadedly connected to the fastening nut, and the hanger bolt connects the external wall hanger, the heat-insulating external wall hanger cushion block, the inner tank bracket, and the heat-insulating inner tank bracket cushion block.

2. The electric water heater according to claim 1, characterized in that, At least one end of the heat-insulating inner tank bracket cushion block is provided with an opening, and the opening extends to the fastening nut.

3. An electric water heater according to claim 1, characterized in that, A gap is provided between the heat-insulating inner tank bracket cushion block and the inner tank.

4. An electric water heater according to claim 1, characterized in that, The heat-insulating external wall hanger cushion block is provided with a hollow interior.

5. An electric water heater according to claim 1, characterized in that, It further comprises a plurality of inner tank support blocks, all of the inner tank support blocks are circumferentially arranged at the head end of the inner tank, all of the inner tank support blocks are abutted against the inner tank and the water heater outer shell, and a gap is provided between each of the inner tank support blocks; a foaming cushion layer is sleeved on the inner tank, and the foaming cushion layer tightly abuts against the inner tank and the water heater outer shell at the same time.

6. An electric water heater according to claim 5, characterized in that, All of the inner tank support blocks are circumferentially evenly distributed about the axis of the inner tank.

7. An electric water heater according to claim 5, characterized in that, It further comprises a rigid plastic sleeve, the rigid plastic sleeve is provided on the water heater outer shell, the rigid plastic sleeve sleeves the water inlet pipe and the water outlet pipe respectively, and the gap between the inner hole of the rigid plastic sleeve and the water inlet pipe and the water outlet pipe is 0.3 mm.

8. An electric water heater according to claim 7, characterized in that, A gap is provided between the rigid plastic sleeve and the inner tank.

9. The electric water heater according to claim 8, characterized in that Inside the water heater outer shell, the space outside the foaming cushion layer and all of the inner tank support blocks is filled with foaming material to form a foaming support member; The gap between the rigid plastic sleeve and the inner tank is also filled with the foaming material to form a foaming support member.

10. A water heater according to any one of claims 1-9, characterized in that, It further comprises heat-insulating cotton, and the heat-insulating cotton is provided at the flange position of the mouth of the inner tank inside the electrical chamber.

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