CN115388552B

CN115388552B - electric water heater

Info

Publication number: CN115388552B
Application number: CN202110865441.8A
Authority: CN
Inventors: 赵雪森; 管江勇; 张少辰; 曹冠忠; 王龙强
Original assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Economic And Technology Development District Haier Water Heater Co ltd; Haier Smart Home Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2026-02-03
Anticipated expiration: 2041-07-29
Also published as: CN115388552A

Abstract

This invention discloses an electric water heater, comprising: a shell, a first end cap at one end of the shell, a second end cap at the other end of the shell, a mounting cover plate disposed within the shell, forming a mounting cavity between the mounting cover plate and the first end cap, and an electrical cavity between the mounting cover plate and the second end cap; an inner tank disposed within the mounting cavity; and an electric heating module disposed within the inner tank and used for heating water by electricity; wherein, a first pad and a second pad are disposed within the mounting cavity, the first pad being disposed on the first end cap, the second pad being disposed on the second end cap, and the inner tank being located between the first pad and the second pad. This invention improves the foaming quality, thereby enhancing the product quality of the electric water heater.

Description

Electric water heater

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to an electric water heater.

Background

At present, water heaters are household appliances commonly used in daily life of people, and the water heaters are divided into electric water heaters and gas water heaters according to different heating sources. The electric water heater is widely used because of its convenient installation. The electric water heater generally comprises a shell, an inner container and an electric heater, wherein the inner container is arranged in the shell, and the electric heater is arranged in the inner container to heat water in the inner container through the electric heater. Generally, the two ends of the shell are also provided with end covers, wherein the inner side of one side end cover forms an electric installation cavity, and the electric installation cavity is used for installing components such as a power panel.

In the prior art, a heat insulation mode is generally adopted between a shell and an inner container of the electric water heater, the shell is generally made of metal materials and has higher structural strength, and an end cover is generally made of plastic materials, so that the position of the end cover is easily influenced by foaming materials to deform in the foaming process, and then overflow occurs, and further the end cover is displaced and is subjected to flashing, so that the quality of the electric water heater is reduced.

In view of this, how to design a technology for improving the foaming quality to improve the product quality of the electric water heater is a technical problem to be solved by the present invention.

Disclosure of Invention

The invention provides an electric water heater, which can improve the foaming quality to improve the product quality of the electric water heater.

In order to achieve the technical purpose, the invention is realized by adopting the following technical scheme:

in one aspect, the present invention provides an electric water heater comprising:

The shell is provided with a first end cover at one end part, a second end cover at the other end part, a mounting cover plate is arranged in the shell, a mounting cavity is formed between the mounting cover plate and the first end cover, and an electric appliance cavity is formed between the mounting cover plate and the second end cover;

The inner container is arranged in the mounting cavity;

the electric heating module is arranged in the inner container and is used for heating water in an electrified manner;

The mounting cavity is internally provided with a first cushion block and a second cushion block, the first cushion block is arranged on the first end cover, the second cushion block is arranged on the second end cover, and the liner is positioned between the first cushion block and the second cushion block.

Further, a supporting protrusion is arranged on the surface, opposite to the inner container, of the second cushion block, the supporting protrusion is of an annular structure, and the sealing head of the inner container abuts against the supporting protrusion.

Further, the annular end face of the supporting protrusion is further provided with a first annular groove, and a first flow blocking area is formed between the first annular groove and the inner container.

Further, a second annular groove is formed in the surface, opposite to the second cushion block, of the second end cover, and a second flow blocking area is formed between the second annular groove and the second cushion block.

Further, the second annular groove is disposed proximate an edge of the second end cap.

Further, the second end cover is provided with a plurality of circles of second annular grooves.

Further, an access opening is formed in the first end cover, a first detachable decorative cover plate is arranged on the first end cover, and/or a second detachable decorative cover plate is arranged on the second end cover.

Further, the electric heating module comprises an outer sleeve and a ceramic heating core, wherein the ceramic heating core is arranged in the outer sleeve, a concave part which is concave towards the inner side is arranged on the mounting cover plate, a first maintenance opening is arranged in the concave part, a water guide ring is arranged on the periphery of the first maintenance opening and extends towards the outer side, a shield is arranged on the water guide ring, a water leakage hole is formed in the bottom of the shield, the outer end part of the ceramic heating core penetrates through the first maintenance opening, and the shield shields the outer end part of the ceramic heating core.

Further, the installation cover plate is further provided with a water blocking rib, and the water blocking rib is shielded above the first maintenance port.

Further, the lower edge of the mounting cover plate is also provided with a water collecting tank, the water collecting tank is arranged below the first maintenance port, and a water leakage detector is arranged in the water collecting tank.

Compared with the prior art, the electric water heater has the advantages that two cushion blocks are arranged in the mounting cavity of the outer shell, the second cushion block is directly attached to the second end cover, the structural strength of the second end cover is enhanced by utilizing the second cushion block, in the foaming process, the inner container is clamped between the first cushion block and the second cushion block, the two cushion blocks are utilized to position the inner container, so that the inner container is kept at a relatively uniform distance from the inner wall of the outer shell, a foaming layer with uniform thickness is further obtained, meanwhile, a foaming material flows to the second cushion block, tension generated by the foaming material is reduced by utilizing the second cushion block, the second end cover is directly impacted, the situation that the second end cover deforms to generate leakage is reduced, and the foaming quality is improved to improve the product quality of the electric water heater.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of an electric water heater according to the present invention;

FIG. 2 is a schematic view of the second end cap of FIG. 1;

FIG. 3 is a schematic view of a second pad of FIG. 1;

FIG. 4 is an exploded view of the enclosure of FIG. 1;

FIG. 5 is a partial cross-sectional view of the housing of FIG. 1;

FIG. 6 is a schematic view of the reinforcement plate of FIG. 4;

FIG. 7 is a second schematic view of the reinforcing plate of FIG. 4;

FIG. 8 is a schematic view of the liner of FIG. 4;

Fig. 9 is a cross-sectional view of an electric water heater of the invention;

FIG. 10 is an assembled view of the inventive bladder, first block and mounting cover;

FIG. 11 is a schematic diagram of an embodiment of the electrical box of the present invention;

FIG. 12 is a second schematic diagram of the electrical box of the present invention;

FIG. 13 is a schematic view of the structure of the mounting cover plate of the invention;

FIG. 14 is a schematic view of the structure of the inventive shield;

FIG. 15 is a schematic view of an electrical heating module according to the present invention;

FIG. 16 is a schematic view of the connector of FIG. 15;

FIG. 17 is a cross-sectional view of the electric heating module of FIG. 15;

fig. 18 is a partially enlarged schematic view of the region B in fig. 17.

Reference numerals:

An inner container 1;

A boss 11 and a connection base 12;

An electric heating module 2;

The outer sleeve 21, the ceramic heating core 22, the sealing ring 23 and the connecting piece 24;

A turned-out edge 211, a cambered surface 212;

a first connection hole 2111;

positioning notch 220, mounting seat 221, insulating core 222, pull rod 223, positioning block 224;

tightening the tip 2231 and the locating surface 2241;

A second connecting hole 240, a pressing plate 241, a connecting plate 242, a fixing plate 243, and a flange 244;

a temperature sensing module 3;

a temperature controller 30, a heat conduction pipe 31 and a temperature sensing probe 32;

a housing 4;

A drain hole 41, a mounting jack 42, a first clamping groove 43 and a process hole 44;

first end cap 401, second end cap 402, second annular groove 403, first decorative cover plate 404, second decorative cover plate 405;

Installing a cover plate 5;

the water leakage detector comprises a concave part 50, a first maintenance opening 51, water retaining ribs 52, a water collecting tank 53, a water leakage detector 54, a shield 55, a second maintenance opening 56, a water guide ring 57 and a mounting groove 58;

water leakage hole 551, card hole 552, slot 581, first screw hole 582;

A first pad 61, a second pad 62;

a support boss 621, a first annular recess 622;

An electrical box 7;

a power panel 70, a box body 71 and a box cover 72;

a relay 701, a chute 711, a plugboard 712, a first connection board 713, a second connection board 721;

a control panel 8;

a controller 81;

a mounting mechanism 9;

reinforcing plate 91, lining plate 92;

Avoidance groove 911, first reinforcing rib 912, second reinforcing rib 913, third reinforcing rib 914, first claw 915, blocking groove 916, second clamping groove 917, through hole 921, second claw 922, flanging structure 923;

a water inlet pipe 101 and a water outlet pipe 102.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The electric water heater adopts electric energy as a main energy material, and the high-temperature heat generated after the electric energy is electrified directly heats water stored in the electric water heater so as to achieve the purpose of preparing hot water.

The electric water heater generally comprises a water tank, an electric heating component, an electric control device and the like, wherein a water storage cavity is formed in the water tank to store water to be heated, the electric heating component is inserted into the water storage cavity formed by the water tank, and the electric control device is used for controlling the electric heating component to be powered on and powered off so as to heat the water in the water tank to a set temperature.

For a water tank of an electric water heater, the water tank generally comprises a shell and an inner container, and an insulation layer is formed between the shell and the inner container. The shell is generally made of plastic materials to meet design requirements of attractive and diversified shapes, and the liner can be made of metal or plastic according to requirements.

In addition, the heat insulating layer is formed between the outer shell and the inner container, and common heat insulating materials include asbestos, sponge, foamed plastic, polyurethane foam and the like, and in the conventional technology, in order to obtain good heat insulating effect, the heat insulating layer is generally formed in a foaming mode.

For the liner adopting the metal liner, the inside of the liner is easy to corrode due to the influence of water quality, and therefore, the magnesium rod is also arranged on the water tank and inserted into the water storage cavity in the water tank.

Since magnesium is the lowest potential metal in the electrochemical sequence, it is physiologically non-toxic. Therefore, the magnesium rod protective liner is very ideal to be used for manufacturing the magnesium rod protective liner. The size of the magnesium rod is directly related to the time of protecting the liner and the protecting effect, and the larger the magnesium rod is, the better the protecting effect is and the longer the protecting time is.

For the electric heating component, electric heating modes such as electric heating wires, magnetic energy or silicon tube heating can be adopted to heat water stored in the water storage cavity.

The electric heating component of the invention adopts an electric heating module to heat water, and the following description is made with reference to the accompanying drawings.

In a first embodiment, as shown in fig. 1-7, the present invention provides an electric water heater, comprising:

The shell 4, one end of the shell 4 is provided with a first end cover 401, the other end of the shell 4 is provided with a second end cover 402, a mounting cover plate 5 is arranged in the shell 4, a mounting cavity is formed between the mounting cover plate 5 and the first end cover 401, and an electrical appliance cavity is formed between the mounting cover plate 5 and the second end cover 402;

the inner container 1 is arranged in the mounting cavity;

the electric heating module 2 is arranged in the liner 1 and is used for heating water by electrifying;

Wherein, be provided with first cushion 61 and second cushion 62 in the installation cavity, first cushion 61 sets up on first end cover 401, and second cushion 62 sets up on second end cover 402, and inner bag 1 is located between first cushion 61 and the second cushion 62.

Specifically, the liner 1 is used for storing water, and water to be heated is contained through the liner 1, wherein a water inlet pipe 101 and a water outlet pipe 102 extending to the inside of the liner 1 are arranged on the liner 1, cold water enters the liner 1 through the water inlet pipe 101, and heated hot water is output from the water outlet pipe 102. The liner 1 is provided with a mounting opening (not marked), and the electric heating module 2 is inserted into the liner 1 through the mounting opening and is used for energizing and heating water.

In the assembly process, the liner 1 is arranged in the shell 4 and supported and suspended in the shell 4 by the first cushion block 61 and the second cushion block 62, a foaming space is formed among the shell 4, the liner 1, the second end cover 402 and the mounting cover plate 5, and in the foaming process, foaming materials enter the foaming space for foaming treatment, and for the second end cover 402, the inner side of the second end cover 402 is protected by the second cushion block 62, so that the expansion force generated by the foaming materials is exerted on the second cushion block 62.

Because the second cushion block 62 and the second end cover 402 can be well and tightly matched, the force generated by the foaming material is transferred to the second end cover 402 through the second cushion block 62 so as to ensure uniform stress of the second end cover 402, and further solve the problem that the second end cover 402 is deformed due to uneven pressure generated on the second end cover 402 in the foaming material flowing process.

In some embodiments, the surface of the second cushion block 62 opposite to the liner 1 is provided with a supporting protrusion 621, the supporting protrusion 621 has an annular structure, and the end socket of the liner 1 abuts against the supporting protrusion 621.

Specifically, through the internal surface of second cushion 62 sets up supporting bulge 621, supporting bulge 621 wholly is annular structure and can be better paste the head of liner 1 to more firm reliable support column liner 1. Meanwhile, in the foaming process, since the second cushion block 62 is generally made of a material with heat insulation capability, such as foam, the supporting protrusions 621 can prevent foaming materials from flowing into the space formed between the supporting protrusions 621 and the sealing head of the liner 1, so that the using amount of the foaming materials is reduced.

In another embodiment, the annular end surface of the supporting protrusion 621 is further provided with a first annular groove 622, and a first choke area is formed between the first annular groove 622 and the liner 1. Specifically, by arranging the first annular groove 622 on the annular end surface of the supporting protrusion 621, the foaming material is effectively choked by the first annular groove 622, so that the foaming material forms a solidified sealing structure in the first annular groove 622, and the foaming material is further reduced to enter the circle center area of the second end cover 402, so that the occurrence of local bulge caused by uneven foaming material distribution is reduced.

In a preferred embodiment, a second annular groove 403 is provided in the surface of the second end cap 402 opposite the second spacer 62, the second annular groove 403 forming a second flow blocking area with the second spacer 62. Specifically, since part of the foaming material flows out through the gap between the second cushion block 62 and the inner wall of the housing 4 and flows to the area between the second end cover 402 and the second cushion block 62, by configuring the second annular groove 403 to form the second flow blocking area, the center area of the second end cover 402 of the foaming material can be blocked more effectively, so as to improve the foaming quality. Wherein a second annular groove 403 is disposed proximate to an edge of second end cap 402 to block foam at a peripheral ring location of second end cap 402. In addition, a plurality of second annular grooves 403 are provided in the second end cap 402 to form a plurality of second flow blocking areas.

In some embodiments, to optimize the appearance, access openings (not labeled) are provided on the first end cap 401, a first removable trim cover plate 404 is provided on the first end cap 401, and/or a second removable trim cover plate 405 is provided on the second end cap 402.

In the second embodiment, as shown in fig. 8-14, the electric water heater provided by the invention further comprises an electric box 7, wherein the electric box 7 is arranged in the electric cavity, the electric box 7 comprises a box body 71 and a box cover 72, and the box cover 72 is slidably arranged on the box body 71 and half covers the opening of the box body 71.

Specifically, the box body of the electrical box 7 is used for installing a power board 70, a relay 701 is arranged on the power board 70, and the box cover 72 is used for shielding the relay 701. Thus, in normal use, when the relay 701 generates a fire, sparks generated by the relay 701 can be protected by the cover plate. In the use state of the box cover 72, the box cover 72 only needs to shield the relay 701 on the power panel, and does not need to shield other components on the power panel, so that the amount of sheet metal material used by the box cover 72 can be effectively reduced to reduce the manufacturing cost.

In addition, in the maintenance process, the box cover 72 does not need to be detached from the box body 71, and only the box cover 72 needs to be pushed to slide so as to expose the relay 701, so that an operator can replace the maintenance relay 701 conveniently, and further, the maintenance process is simplified, and the maintenance difficulty is reduced.

In some embodiments, sliding grooves 711 are provided on both sidewalls of the case 71, and sliding insertion parts (not shown) are provided on both sides of the case cover 72, which are inserted into the sliding grooves 711 of the corresponding sides and can slide in the sliding grooves 711.

Specifically, the box cover 72 is slidably disposed in the sliding groove 711 by using a sliding insertion portion (for example, an inner flange formed on the box cover), and the box cover 72 is matched with the sliding groove 711 by using the sliding insertion portion, so as to realize that the box cover 72 slides on the box body 71.

In some embodiments, in order to form two cavities in the housing 4 to mount the liner 1 and the electrical box 7, respectively, a mounting cover plate 5 may be provided in the housing 4, the mounting cover plate 5 dividing the interior of the housing 4 into the mounting cavity and the electrical box, and a box 71 provided on the mounting cover plate 5.

Specifically, the mounting cover 5 is disposed in the housing 4 and spaces the inner container 1 and the electrical box 7. The electric box 7 is fixedly installed on the installation cover plate 5, an installation groove 58 is formed in the installation cover plate 5, a slot 581 is formed in one side of the installation groove 58, a first screw hole 582 is formed in the other side of the installation groove 58, a plugboard 712 is arranged on one side of the box body 71, a first connecting plate 713 is arranged on one side of the box body 71, a first fixing hole is formed in the first connecting plate, the plugboard 712 is inserted into the slot 581, and a screw penetrates through the first fixing hole to be in threaded connection with the first screw hole.

Specifically, when the case 71 is fixedly mounted on the mounting plate 5, the insert plate 712 is first inserted into the insert groove 581, and then, after aligning the first fixing hole on the first connection plate with the first screw hole, a screw is passed through the first fixing hole and screwed into the first screw hole to fix the case 71 on the mounting plate 5.

In some embodiments, a second screw hole is further provided at the other side of the mounting groove 58, the first screw hole is spaced from the second screw hole, a second connection plate 721 is provided on the box cover 72, a second fixing hole is provided on the second connection plate 721, and a screw is screwed into the second screw hole through the second fixing hole.

Specifically, in the normal use state, in order to fix the cover 72 so as to avoid free sliding, the cover 72 may be fixed by a screw. Preferably, one of the first screw holes may serve as the second screw hole, and the second fixing hole, the first fixing hole, and the corresponding first screw hole are aligned on the fixing cap 72, and sequentially pass through the second fixing hole, the first fixing hole, and are screw-coupled in the first screw hole by one screw.

In the third embodiment, for the electric heating module 2, the present embodiment adopts a ceramic heating structure, specifically, as shown in fig. 15-18, the electric heating module 2 includes an outer sleeve 21 and a ceramic heating core 22, a first end of the outer sleeve 21 is a closed structure, the ceramic heating core 22 is disposed in the outer sleeve 21, and a second end of the outer sleeve 21 is provided with an external flange 211. The outward flange 211 is provided with a first connection hole 2111, the electric heating module 2 further comprises a connecting piece 24, one end part of the connecting piece 24 is provided with a pressing part, the other end part of the connecting piece 24 is provided with a second connection hole 240, the pressing part is abutted against the end part of the ceramic heating core 22, and a bolt passes through the first connection hole 2111 and the second connection hole 240 and is connected with a fastening nut in a threaded manner.

Specifically, for the electric heating module 2, after the ceramic heating core 22 is inserted into the outer sleeve 21 and is inserted in place during the assembly process, the ceramic heating core 22 and the outer sleeve 21 are connected and fixed together by the connecting member 24 at the outside.

The connecting piece 24 is pressed on the end part of the ceramic heating core 22 exposed out of the outer sleeve 21 through the configured pressing part to realize pressing and fixing of the ceramic heating core 22, and further, the first connecting hole 2111 is aligned with the second connecting hole 240, and then the connecting piece 24 is fastened on the flanging 211 on the outer sleeve 21 through bolts to complete assembly of the electric heating module 2.

The connecting member 24 is fastened to the flange 211 by bolts so that the flange 211 and the connecting member 24 are firmly and reliably connected together. The end of the ceramic heating core 22 is pressed and positioned by the pressing part of the connecting piece 24, so that the ceramic heating core 22 cannot be separated from the outer sleeve 21, and the ceramic heating core 22 is positioned and fixed.

In addition, the ceramic heating core 22 is connected with the outer sleeve 21 in an extrusion limiting mode, and holes are not required to be additionally formed in the ceramic heating core 22 so as to meet the requirement of bolt connection, so that the processing difficulty of the ceramic heating core 22 is reduced, and further the manufacturing cost is reduced.

In some embodiments, the connecting member 24 includes a pressing plate 241, a connecting plate 242, and a fixing plate 243, the pressing plate 241 is connected to the fixing plate 243 through the connecting plate 242, the pressing plate 241 forms the pressing part, and the fixing plate 243 is provided with the second connecting hole 240.

Specifically, the connecting piece 24 is formed by a pressing plate 241, a connecting plate 242 and a fixing plate 243 which are connected together, and the pressing plate 241, the connecting plate 242 and the fixing plate 243 can be in an integral structure and are manufactured by adopting a metal plate bending mode. The connecting piece 24 is in a step structure, and the connecting piece 24 in a step structure can better fit with the installation requirements of the outer sleeve 21 and the ceramic heating core 22 in the appearance. For example, the connection plate 242 is disposed perpendicular to the pressing plate 241 and the fixing plate 243.

In other embodiments, the fixing plate 243 is provided with a folded flange 244, the flange 244 abutting against the side of the flange 211.

Specifically, for the fixing plate 243, the second coupling hole 240 provided thereon needs to be aligned with the first coupling hole 2111 of the flange 211 at the time of assembly to insert a bolt for fastening. By providing the fixing plate 243 with the flange 244, the flange 244 will abut against the edge of the flange 211 to facilitate accurate alignment of the first and second connection holes 2111 and 240. Preferably, two folds 244 with a certain included angle may be provided on the fixing plate 243, and the edges of the outward flange 211 are clamped by using the two folds 244 with opposite inclination, so as to achieve accurate positioning.

In actual assembly, a plurality of connectors 24 may be provided as required to meet the requirement of reliable connection between the outer sleeve 21 and the ceramic heating core 22.

In other embodiments, the ceramic heating core 22 is provided with a positioning notch 220, and the pressing portion is located in the positioning notch 220.

Specifically, when the connecting piece 24 compresses the ceramic heating core 22, the pressing plate 241 on the connecting piece 24 can be clamped in the positioning notch 220, so as to accurately position and fix the ceramic heating core 22.

The outer contour of the flange 211 may be polygonal, and the first connecting hole 2111 is disposed at a corner of the polygon, so that the positions of the connecting piece 24 and the flange 211 are relatively fixed under the positioning action of the flange 244, and meanwhile, the mounting position and the mounting angle of the ceramic heating core 22 can be accurately positioned when the connecting piece 24 is matched with the positioning notch 220 on the ceramic heating core 22.

For the transversely arranged inner container 1, the electric heating module 2 also protrudes into the inner container 1 in a transversely arranged manner from a mounting opening arranged at the end of the inner container 1. In order to reduce the damage to the ceramic heating core caused by condensation of air in the outer sleeve 21 due to cold and hot alternation during use, the outer sleeve 21 is transversely arranged in the inner liner 1 for the electric heating module 2, and the outer sleeve 21 extends obliquely upwards along the direction from the outside to the inside of the inner liner 1. In order to smoothly discharge water flowing out of the outer sleeve 21 or water generated by other reasons out of the housing 4. The drain hole 41 is provided in the housing 4 so that water in the housing 4 can be smoothly discharged from the drain hole 41 to improve the reliability of the electric water heater.

In the actual use process, the electric heating module 2 can be used in the horizontal type transversely placed inner container 1, and meanwhile, the inner container 1 is transversely arranged in the shell 4, so that the use requirement that the horizontally placed inner container 1 is heated by adopting the electric heating module 2 is met, and the use reliability is further improved.

In order to heat the water in the liner 1, an electric heating module 2 is arranged in the liner 1, the electric heating module 2 adopts a ceramic heating core 22 to generate heat, and an outer sleeve 21 is sleeved outside the ceramic heating core 22 so as to protect the ceramic heating core 22 through the outer sleeve 21. The outer sleeve 21 is made of a heat conducting material such as copper and aluminum, so that the ceramic heating core 22 is protected, and meanwhile, the heat generated by the ceramic heating core 22 is guaranteed to be rapidly transferred to water in the liner 1 through the outer sleeve 21.

In order to increase the heating efficiency and the reliability of use, the electric heating module 2 is arranged in a laterally arranged inner container 1 in an inclined manner. Moreover, the electric heating module 2 extends upwards in the inner container 1 in an inclined way, so that the arrangement length of the electric heating module 2 in the inner container 1 can be increased, and the heating efficiency is further improved, so that the requirement of hot water output rate is met.

In addition, since the electric heating module 2 is installed on the liner 1 in an inclined upward extending manner, in the use process, after the air containing water from the outside enters the outer sleeve 21 and is condensed into condensed water, the condensed water flows downwards along the inner pipe wall of the outer sleeve 21 under the action of gravity and finally flows out. Therefore, the water drop formed in the outer sleeve 21 can be effectively reduced from falling onto the ceramic heating core 22 to damage the high-temperature ceramic heating core 22, and the use reliability is improved.

In other embodiments, a concave part 50 which is concave towards the inner side is arranged on the mounting cover plate 5, a first maintenance opening 51 is arranged in the concave part 50, a water guide ring 57 is arranged on the periphery of the first maintenance opening 51, the water guide ring 57 extends towards the outer side, a shield 55 is arranged on the water guide ring 57, a water leakage hole 551 is arranged at the bottom of the shield 55, the outer sleeve 21 is sealed and extends into the inner container 1, the outer sleeve 21 is transversely arranged in the inner container 1 and extends upwards in an inclined mode along the direction from the outer part to the inner part of the inner container 1, the outer end part of the ceramic heating core passes through the first maintenance opening 51, and the shield 55 shields the outer end part of the ceramic heating core.

Specifically, in order to install relevant electric control components and meet the requirement of later maintenance, an installation cover plate 5 is arranged on one end socket of the liner 1, an electric appliance installation cavity is formed between the installation cover plate 5 and an end cover of the electric water heater, and relevant electric control devices such as an electric control plate can be installed by utilizing the electric appliance installation cavity. Meanwhile, the first maintenance opening 51 is formed in the installation cover plate 5, the part of the electric heating module 2 exposed out of the liner 1 can penetrate through the first maintenance opening 51 and extend into the electric appliance installation cavity, and when the ceramic heating core 22 or the electric heating wire in the electric heating module 2 is required to be maintained in the later period, convenient and quick maintenance operation can be performed through the electric appliance installation cavity.

In the use process, condensed water is formed in the outer sleeve 21 due to cold and hot alternation, and meanwhile, the condensed water is also formed in the electric appliance installation cavity formed by the installation cover plate 5. The condensed water formed in the outer sleeve 21 can flow out of the outer sleeve 21 under the action of gravity and is guided to flow into the water leakage holes 551 formed at the bottom of the shield 55 through the water guide ring 57, and finally, the condensed water flowing out of the outer sleeve 21 is smoothly discharged from the water leakage holes 551.

Meanwhile, even if the phenomenon of dripping is caused by the formation of condensed water in the electric appliance installation cavity, the outer end part of the ceramic heating core 22 is shielded and protected by the shield 55, so that the damage of the condensed water formed in the electric appliance installation cavity to the ceramic heating core 22 can be avoided, and the use reliability is further effectively improved.

In some embodiments, a slot (not labeled) is formed between the water guide ring 57 and the sidewall of the recess 50, and the shield 55 is inserted in the slot 581.

Specifically, in order to facilitate quick installation of the shield 55, a slot may be formed between the water guide ring 57 and the inner wall of the recess 50, and when the shield 55 is assembled, the assembly of the shield 55 may be completed by simply inserting the shield 55 into the slot.

Wherein, in order to improve the assembling reliability, the side wall of the recess 50 is provided with a claw 501, and the shield 55 is provided with a clamping hole 552 in which the claw is clamped.

Specifically, after the shield 55 is inserted into the slot, the claw disposed on the inner wall of the recess 50 will be clamped in the clamping hole, and the shield 55 is clamped on the mounting cover plate 5 by means of clamping, so as to improve the convenience of assembly.

In addition, the side wall of the recess 50 is provided with a plurality of ribs 502 arranged around the periphery of the water guide ring 57, with the shield 55 sandwiched between the ribs and the water guide ring 57.

In particular, the ribs 502 can guide the insertion of the shield 55 into the slot on the one hand, and on the other hand, with the ribs 502 can abut against the outer surface of the shield 55 to further secure the shield 55.

In one embodiment, one end of the liner 1 is provided with a boss 11, and the mounting port is provided on the boss 11.

Specifically, in order to facilitate the installation of the electric heating module 2, the end of the inner container 1 is provided with a protruding portion 11, and the protruding portion 11 may be formed on the end of the inner container 1 by punching or the like. In general, the end socket of the inner container 1 arranged transversely is an arc surface, and the protruding portion 11 protrudes from the arc end surface of the end socket of the inner container 1, so that a relatively flat installation end surface can be formed on the protruding portion 11, and meanwhile, the installation opening is formed on the protruding portion 11, so that the electric heating module 2 can be conveniently inserted into the installation opening to be installed and fixed on the protruding portion 11 of the inner container 1.

In one embodiment, the connection between the outer tube 21 and the liner 1 is sealed. A sealing ring 23 is arranged between the second end of the outer sleeve 21 and the boss 11.

Specifically, the seal ring 23 seals the joint formed between the outer sleeve 21 and the liner 1, thereby improving the overall sealing performance.

Wherein the second end of the outer sleeve 21 is provided with a turned-out edge 211, and the sealing ring 23 is clamped between the turned-out edge 211 and the bulge 11. The seal ring 23 is sandwiched between the flange 211 and the boss 11, so that the joint portion formed between the outer tube 21 and the inner tube 1 is sealed by the seal ring 23.

In some embodiments, in order to realize that the outer sleeve 21 extends obliquely upwards towards the inner direction of the liner 1, at least two structural designs can be adopted.

In the first embodiment, the outer sleeve 21 is mounted obliquely by designing the mounting end surface formed by the boss 11 as an inclined surface, that is, the mounting end surface is disposed obliquely with respect to the horizontal center line of the inner container 1.

Specifically, when the electric heating module 2 is installed, the electric heating module 2 is installed obliquely through the installation end face which is arranged obliquely, so that the electric heating module 2 extends into the inner container 1 obliquely upwards along the tax receipt center line of the inner container 1. And for the installation end surface, in the forming process of the liner 1, the installation end surface of the bulge 11 forms a certain inclination angle, so that when the electric heating module 2 is installed, the electric heating module 2 can be arranged upwards in the liner 1 in an inclined way only by installing and fixing the electric heating module 2 on the bulge 11.

In the second mode, as shown in fig. 15, the second end portion of the outer sleeve 21 is provided with a flange 211, and an angle is formed between the center line of the outer sleeve 21 and the perpendicular line of the flange 211.

Specifically, for the outer sleeve 21, when the outer sleeve 21 is fixed, a plane formed by the outward flange 211 is used as a mounting reference plane, and the center line of the outer sleeve 21 is obliquely arranged relative to the plane formed by the outward flange 211, that is, an acute angle is formed between the center line of the outer sleeve 21 and the perpendicular line of the outward flange 211, so as to meet the requirement that the outer sleeve 21 extends obliquely upwards.

In some embodiments, to facilitate the installation of the outer sleeve 21, an external thread (not labeled) may be provided on the outer circumference of the second end of the outer sleeve 21, and the installation port is formed with an internal thread (not labeled) into which the outer sleeve 21 is screwed.

Specifically, when an operator composes in a factory, the sealing ring 23 is sleeved outside the outer sleeve 21, then the outer sleeve 21 is inserted into the mounting opening, and after the external thread of the outer sleeve 21 contacts with the internal thread on the mounting opening, the outer sleeve 21 is rotated to enable the outer sleeve 21 to be in threaded connection with the liner 1.

As the outer sleeve 21 is gradually tightened, the sealing ring 23 is pressed between the flange 211 and the boss 11, and the assembly of the electric heating module 2 to the inner container 1 is finally completed.

In a preferred embodiment, in order to improve the connection reliability and connection strength between the outer sleeve 21 and the inner container 1, the female screw hole formed in the inner container 1 may be a female screw hole formed in the connecting seat 12 formed by welding the connecting seat 12 to the boss 11.

Specifically, the connecting seat 12 is provided with an internal threaded hole, the connecting seat 12 is fixedly arranged on the protruding portion 11 in a welding mode, so that the inner container 1 can be provided with an internal threaded hole long enough to meet the requirement of threaded connection of the outer sleeve 21 through the connecting seat 12, and meanwhile, the connecting seat 12 is fixed on the inner container 1 in a welding mode, so that the connecting seat 12 and the inner container 1 have enough connection strength.

When the outer sleeve 21 needs to be assembled, the first end of the outer sleeve 21 extends into the internal threaded hole on the connecting seat 12, and then the second end of the outer sleeve 21 is matched with the internal threaded hole through external threads to realize threaded installation of the outer sleeve 21 on the connecting seat 12. At the same time, the sealing ring 23 is clamped between the outward flange 211 and the connecting seat 12, so that the requirement of sealing connection is met.

In other embodiments, the ceramic heating core 22 is damaged due to the fact that condensed water is easily generated inside the electric appliance installation cavity or water leakage is easily generated due to faults in the use process of a user, and the water flows downwards, so that the installation cover plate 5 is further provided with water blocking ribs 52, and the water blocking ribs 52 are blocked above the first maintenance opening 51.

Specifically, water blocking ribs 52 are arranged above the first maintenance opening 51, when the water flows downwards on the installation cover plate 5 in the electric appliance installation cavity, the water flow can be blocked by the water blocking ribs 52, so that the water flow cannot flow onto the ceramic heating core 22, the water blocking ribs 52 are used for carrying out waterproof protection on the ceramic heating core 22, and the use reliability is improved.

And for the water flowing to the bottom of the installation cover plate 5, a water collecting tank 53 can be further arranged at the lower edge of the installation cover plate 5, and the water flowing down can be collected by the water collecting tank 53. Specifically, a water collection tank 53 is provided below the first maintenance port 51, and the water collection tank 53 is disposed in a region between the first maintenance port 51 and the lower end portion of the water deflector 52. The water flowing down from the guide is blocked by the water blocking rib 52, and the water flowing out from the outer sleeve 21 can flow into the water collecting tank 53 for temporary storage. The water temporarily stored in the water collecting tank 53 is heated and evaporated by the heat generated during the operation of the electric control device in the electric appliance installation cavity, so that the water flowing out of the water drain hole 41 during the daily use process can be reduced, and the user experience is affected.

And when more water is present in the appliance installation cavity and the water in the water collecting tank 53 overflows, the water overflowed from the water collecting tank 53 is discharged from the drain hole 41 below.

In order to further improve the reliability and safety of use, the installation cover plate 5 is further provided with a water leakage detector 54, and the water leakage detector 54 is disposed below the first maintenance opening 51.

Specifically, when the water leakage occurs in the liner 1 due to a fault, the bottom of the electric installation cavity will accumulate water rapidly, and at this time, when the water level at the bottom rises above the water collecting tank 53 and below the first maintenance port 51, the water leakage detector 54 will detect the water leakage to perform automatic power-off operation on the electric control components such as the electric heating module 2, so as to reduce the occurrence of the electric leakage. Wherein the water leakage detector 54 is provided in the water collecting tank 53, and a detection head of the water leakage detector 54 is higher than the water collecting tank 53.

In other embodiments, a shroud 55 is also provided on the mounting plate 5, the shroud 55 shielding the outer ends of the ceramic heating core 22.

Specifically, the outer end of the ceramic heating core 22 can be further shielded by the shield 55, the outer end of the ceramic heating core 22 is completely shielded by the shield 55, and water drops can be prevented from falling and splashing onto the ceramic heating core 22 by the shield 55.

In some embodiments, to meet the requirement of accurate assembly, the electric heating appliance further comprises a first spacer 61, and the first spacer 61 is disposed between the mounting cover 5 and the corresponding seal head.

Specifically, since the installation cover plate 5 needs to be installed and fixed on the seal head of the cambered surface structure of the liner 1, the first cushion block 61 is additionally arranged between the installation cover plate 5 and the seal head in order to ensure that the installation cover plate 5 can be reliably installed on the liner 1 under the influence of the cambered surface structure of the seal head. The first cushion block 61 can set up assorted surface according to the cambered surface shape of head, like this, carry out auxiliary installation with improving the equipment accuracy through first cushion block 61 to installation apron 5, more be favorable to improving assembly efficiency.

In some embodiments, since the inner container 1 is not connected by a flange, in order to meet the installation requirement of the temperature sensing probe in the temperature controller, an installation hole is provided at one end of the inner container 1, and the corresponding inner container assembly further comprises a temperature sensing module 3.

The temperature sensing module 3 comprises a heat conducting pipe 31 and a temperature controller 30, wherein a mounting hole is further formed in the seal head with the protruding portion 11, the heat conducting pipe 31 is transversely arranged at one end portion of the inner container 1 and is inserted into the inner container 1 in a sealing mode, a temperature sensing probe 32 of the temperature controller 30 is located in the heat conducting pipe 31, a second maintenance opening 56 is formed in the cover mounting plate, and the outer end portion of the heat conducting pipe penetrates through the second maintenance opening 56 and stretches into the electric appliance mounting cavity.

Specifically, since the electric heating module 2 is installed on the seal head of the liner 1 in a threaded connection manner, the seal head is provided with an installation hole, the heat conduction pipe 31 is inserted into the installation hole in a sealing manner, the end part of the heat conduction pipe 31 located in the liner 1 is in a sealing design, the temperature sensing probe 32 is installed inside the liner 1 through the heat conduction pipe 31, and then the temperature of the water in the liner 1 is detected through the temperature sensing probe 32.

In the fourth embodiment, based on the first and second embodiments, in order to improve the shock resistance of the electric heating module 2 during transportation and meet the installation requirement of the electric heating module 2 installed by the liner 1 arranged laterally. The following structural improvement is made to the electric heating module 2.

As shown in fig. 17 to 18, the ceramic heating core 22 includes a mounting seat 221, an insulating core 222, an electric heating wire (not shown) and a pull rod 223, the mounting seat 221 is provided with a first through hole (not shown), the insulating core 222 is provided with a second through hole (not shown), the insulating core 222 is provided on the mounting seat 221, the pull rod 223 passes through the first through hole and the second through hole and connects the mounting seat 221 and the insulating core 222 together, and the electric heating wire is provided on the insulating core 222.

Specifically, the insulating core 222 in the ceramic heating core 22 may be sintered from a ceramic material, and the mounting base 221 may be made from a heat-resistant insulating material, for example, a ceramic material. The insulation core 222 is connected with the mounting seat 221 through the pull rod 223, one end of the pull rod 223 can be provided with a tensioning end 2231, the tensioning end 2231 abuts against the insulation core 222, the other end of the pull rod 223 is connected with a locking nut in a threaded manner, and the locking nut abuts against the outside of the mounting seat 221, so that the insulation core 222 is fixedly connected with the mounting seat 221. Then, the mounting base 221 is connected and fixed with the outer sleeve 21, wherein the positioning notch 220 is disposed on the mounting base 221 in a manner of connecting the mounting base 221 with the outer sleeve 21.

The pull rod 223 can realize connection between the insulating core 222 and the mounting seat 221 on one hand, and on the other hand, the pull rod 223 can play a role in structurally reinforcing the insulating core 222 in the insulating core 222 so as to effectively improve the structural strength of the insulating core 222 which is arranged on the mounting seat 221 in a suspended manner. In the transportation process, since the insulating core 222 is effectively supported by the pull rod 223 in the insulating core 222, the collision between the insulating core 222 and the outer sleeve 21 caused by vibration can be effectively reduced, and the reliability is further improved.

In a preferred embodiment, for better protection of the insulating core 222, the heating core includes a positioning block 224, the positioning block 224 is provided with a third through hole (not labeled), and the pull rod 223 sequentially passes through the third through hole, the second through hole and the first through hole, and the tightening end 2231 abuts against the positioning block 224.

Specifically, the hanging end of the insulating core 222 is provided with a positioning block 224, and the tightening end 2231 of the pull rod 223 abuts against the positioning block 224, so that the positioning block 224 will bear the pressure generated by the tightening end 2231. For the insulating core 222, the contact area between the positioning block 224 and the insulating core 222 is larger, so that the insulating core 222 is prevented from being damaged by the tightening end 2231 during the tightening of the lock nut, thereby improving the assembly reliability.

In addition, the tie rod 223 may be provided with screw thread segments at both ends, respectively, and the tie rod 223 may be connected to the positioning block 224 by screw thread connection.

Further, in order to more accurately and reliably mount the ceramic heating core 22, the ceramic heating core 22 may be further positioned and supported by the free end portion of the outer sleeve 21.

Specifically, the inner wall of the closed structure formed by the first end of the outer sleeve 21 is an arc surface 212, the positioning block 224 is provided with a positioning surface 2241 matched with the arc surface 212, and the positioning surface 2241 abuts against the arc surface 212.

Specifically, after the ceramic heating core 22 is assembled, the ceramic heating core 22 may be installed in the outer sleeve 21, and after the ceramic heating core 22 is assembled in place, the positioning surface 2241 on the positioning block 224 will contact the arc surface 212 formed by the free end of the outer sleeve 21.

Because the cambered surface 212 has an automatic centering function, so that the ceramic heating core 22 is accurately installed in place, on one hand, the ceramic heating core 22 and the inner pipe wall of the outer sleeve 21 can be ensured to have the function of being kept in an accurate range, and on the other hand, the free end part of the ceramic heating core 22 is positioned and supported by the cambered surface 212 of the outer sleeve 21, thereby being more beneficial to improving the shock resistance of the ceramic heating core 22.

For the cambered surface 212, a hemispherical surface is preferable, and the positioning surface 2241 is provided with a chamfer for the edge of the positioning block 224.

In the fourth embodiment, based on the first to third embodiments, optionally, in order to make the overall structure more compact and optimize the appearance effect, as shown in fig. 4 to 8, the housing 4 is provided with a mounting jack 42, the electric water heater further comprises a control panel 8 and a mounting mechanism 9, the back of the control panel 8 is provided with a controller 81, the mounting mechanism 9 comprises a reinforcing plate 91, wherein the reinforcing plate 91 is arranged inside the housing 4 and covers the mounting jack 42, the control panel 8 is arranged on the housing 4 and is abutted against the surface of the housing 4, and the controller 81 is inserted into the mounting jack 42.

Specifically, the control panel 8 is disposed on the housing 4 for the water heater, and the control panel 8 can be mounted against the circumferential surface of the housing 4, and at the same time, the controller 81 on the control panel 8 can pass through the mounting insertion hole 42 on the housing 4 and extend into the housing 4 for mounting.

In this way, the controller 81 can be installed using the inner space of the housing 4, so that the overall structure is compactly designed. Meanwhile, for the control panel 8, the control panel is closely attached to the outer surface of the housing 4, so that the overall appearance is more uniform.

The reinforcing plate 91 disposed in the housing 4 can shield the mounting insertion hole 42, and further protect the controller 81. When the foaming process is performed in the casing 4, the foaming material is prevented from flowing into the periphery of the mounting jack 42, the foaming material is prevented from leaking, and the requirement that the controller 81 is mounted in the casing 4 is met.

In some embodiments, the reinforcing plate 91 is provided with a relief groove 911 recessed toward the inside of the housing 4, and the relief groove 911 is disposed opposite to the mounting insertion hole 42.

Specifically, since the controller 81 needs to extend into the interior of the housing 4, and the reinforcing plate 91 is abutted against the inner wall of the housing 4, the controller 81 is installed by forming the recess avoidance groove 911 on the reinforcing plate 91 to reserve a space.

In other embodiments, since the reinforcing plate 91 is provided in the housing 4 and needs to satisfy foaming requirements, a higher structural strength of the reinforcing plate 91 is required. For this purpose, a plurality of first reinforcing ribs 912 are provided in the avoidance groove 911. Specifically, the first reinforcing rib 912 can enhance the structural strength of the avoidance groove 911, so as to satisfy that the avoidance groove 911 has sufficient structural strength to bear the pressure generated by the foaming material during foaming.

Also, the surface of the reinforcing plate 91 facing away from the mounting insertion hole 42 is provided with a plurality of second reinforcing ribs 913 and/or the surface of the reinforcing plate 91 facing away from the mounting insertion hole 42 is provided with third reinforcing ribs 914 arranged in a honeycomb structure. Specifically, the second reinforcing ribs 913 may further structurally reinforce the back surface of the reinforcing plate 91. And the third reinforcing ribs 914 arranged in a honeycomb structure are distributed on the back surface of the reinforcing plate 91, so that the effect of structural reinforcement is better.

In some embodiments, to facilitate the installation of the reinforcing plate 91, the two ends of the reinforcing plate 91 are respectively provided with a first claw 915, the housing 4 is provided with a first clamping groove 43, and the first claw 915 is clamped in the first clamping groove 43.

Specifically, when the housing 4 is assembled, the reinforcing plate 91 extends into the housing 4 and is engaged with the first clamping groove 43 by the first clamping jaw 915, so that the reinforcing plate 91 is fixed on the housing 4, and the reinforcing plate 91 is not required to be fixed in the housing 4 or by screws from the outside of the housing 4, so that the assembly process is simplified.

In a preferred embodiment, in order to reduce leakage of the foaming material during the foaming process, the reinforcing plate 91 is further provided with a flow blocking groove 916, the flow blocking groove 916 extends along the edge of the reinforcing plate 91, and a flow blocking area for blocking the foaming material from flowing out is formed between the inner wall of the outer shell 4 and the flow blocking groove 916.

Specifically, the flow blocking groove 916 is disposed on the front surface of the reinforcing plate 91, and forms a flow blocking area between the flow blocking groove and the inner wall of the housing 4 after the reinforcing plate 91 is mounted in the housing 4, wherein the flow blocking area can block leakage of the foaming material at the periphery of the reinforcing plate 91. Meanwhile, the flow blocking groove 916 of the periphery of the reinforcing plate 91 may function to reduce deformation of the reinforcing plate 91 in addition to sealing the foaming material.

In another embodiment, to facilitate the installation of the control panel 8, the installation mechanism 9 further comprises a lining board 92, wherein a through hole 921 is arranged on the lining board 92, the lining board 92 is arranged in the casing 4, and the controller 81 is sequentially inserted into the through hole 921 and the installation jack 42.

Specifically, the lining plate 92 is disposed on the outer surface of the casing 4, and the mounting panel may be fastened on the lining plate 92, so as to assist in mounting the control panel 8 through the lining plate 92.

In order to improve the connection reliability, screws pass through the lining plate 92 and the housing 4 in sequence and are screwed to the reinforcing plate 91.

Specifically, the lining plate 92 is connected with the reinforcing plate 91 inside the housing 4 through screws, so that the reinforcing plate 91 is used as a component for bearing the installation stress of the lining plate 92, and further plays a role in protecting and structurally reinforcing the housing 4.

In addition, in order to facilitate the rapid assembly of operators on site, the lining plate 92 is provided with a second claw 922, the housing 4 is provided with a process hole 44, the reinforcing plate 91 is provided with a second clamping groove 917, and the second claw 922 passes through the corresponding process hole 44 and is clamped in the second clamping groove 917

Specifically, the operator, in the field assembly, inserts the second claws 922 of the lining plate 92 into the process holes 44 and clips the corresponding second clamping grooves 917, so that the lining plate 92 is preloaded on the housing 4, and then is fixedly installed by screws.

Further, the edge of the through hole 921 is provided with a burring structure 923, and the burring structure 923 is inserted into the mounting insertion hole 42. Specifically, the flange structure 923 is to be inserted into the mounting insertion hole 42 when mounted to enhance the structural connection strength, and at the same time, the flange structure 923 can further enhance the structural strength of the liner 92 to reduce the occurrence of deformation.

Through setting up the installation jack on the shell for the controller of configuration on the control panel can stretch into the inside of shell through the installation jack, so that control panel can paste the surface of leaning on the shell, and make the controller can utilize the inner space of shell to install, and then the overall structure of water heater is compacter, simultaneously, because control panel pastes the surface of leaning on the shell, realizes the outward appearance integrated design of water heater, has optimized the outward appearance effect, in order to improve user experience nature.

The above embodiments are only for illustrating the technical solution of the present invention, but not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solution described in the above embodiments or equivalents may be substituted for some of the technical features thereof, and the modifications or substitutions do not depart from the spirit and scope of the technical solution as claimed in the present invention.

Claims

1. An electric water heater, comprising:

The inner container is arranged in the mounting cavity;

the mounting cavity is internally provided with a first cushion block and a second cushion block, the first cushion block is arranged on the first end cover, the second cushion block is arranged on the second end cover, and the liner is positioned between the first cushion block and the second cushion block;

the electric heating module comprises an outer sleeve and a ceramic heating core, wherein the ceramic heating core is arranged in the outer sleeve, the ceramic heating core comprises a mounting seat, an insulating core body, an electric heating wire and a pull rod, the mounting seat is provided with a first through hole, the insulating core body is provided with a second through hole, the insulating core body is arranged on the mounting seat, the pull rod penetrates through the first through hole and the second through hole and connects the mounting seat with the insulating core body, the electric heating wire is arranged on the insulating core body, the heating core comprises a positioning block, the positioning block is provided with a third through hole, the pull rod sequentially penetrates through the third through hole, the second through hole and the first through hole, a tensioning end of the pull rod abuts against the positioning block, the inner wall of a closed structure formed by the first end of the outer sleeve is an arc surface, the positioning block is provided with a positioning surface matched with the arc surface, and the positioning surface abuts against the arc surface.

2. The electric water heater according to claim 1, wherein a supporting protrusion is arranged on a surface of the second cushion block opposite to the liner, the supporting protrusion is in an annular structure, and the sealing head of the liner abuts against the supporting protrusion.

3. The electric water heater of claim 2, wherein the annular end surface of the support protrusion is further provided with a first annular groove, and a first choke area is formed between the first annular groove and the inner container.

4. The electric water heater of claim 1, wherein a second annular groove is provided in a surface of the second end cap opposite the second spacer, the second annular groove and the second spacer forming a second flow blocking area therebetween.

5. The electric water heater of claim 4, wherein the second annular groove is disposed proximate an edge of the second end cap.

6. The electric water heater of claim 4, wherein the second end cap is provided with a plurality of turns of the second annular groove.

7. The electric water heater of claim 1, wherein the first end cap has an access opening therein, wherein the first end cap has a first removable decorative cover plate thereon, and/or wherein the second end cap has a second removable decorative cover plate thereon.

8. The electric water heater according to claim 1, wherein a concave portion which is concave towards the inner side is arranged on the mounting cover plate, a first maintenance opening is arranged in the concave portion, a water guide ring is arranged on the periphery of the first maintenance opening and extends towards the outer side, a shield is arranged on the water guide ring, a water leakage hole is formed in the bottom of the shield, the outer end portion of the ceramic heating core penetrates through the first maintenance opening, and the shield shields the outer end portion of the ceramic heating core.

9. The electric water heater of claim 8, wherein the mounting cover plate is further provided with a water blocking rib, the water blocking rib being shielded above the first service port.

10. The electric water heater of claim 8, wherein the lower edge of the mounting cover plate is further provided with a water collection sump, the water collection sump being disposed below the first service port, and a water leakage detector being disposed in the water collection sump.