CN115406097A

CN115406097A - Electric water heater

Info

Publication number: CN115406097A
Application number: CN202110736668.2A
Authority: CN
Inventors: 赵雪森; 管江勇; 郑涛; 牟星宇; 杜天海; 赵峰; 蔡想周; 孙强; 曹冠忠; 郝歆; 于宗超
Original assignee: Haier Smart Home Co Ltd; Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Current assignee: Haier Smart Home Co Ltd; Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-11-29

Abstract

The invention discloses an electric water heater, comprising: the electric appliance comprises a shell, a handle and a handle, wherein the shell is transversely arranged, and a mounting cavity and an electric appliance cavity are arranged in the shell; the inner container is transversely arranged in the mounting cavity and is used for storing water; the electric heating device comprises an inner container, an electric heating module and an electrical box, wherein the inner container is used for containing electric water, the electric heating module is arranged in the inner container and used for heating the water in an electrified mode, the electrical box is arranged in the electrical cavity and comprises a box body and a box cover, and the box cover is slidably arranged on the box body and covers the opening of the box body in a half mode. The electric water heater has the advantages that the electric water heater is convenient to maintain by operators, so that the maintenance convenience is improved, and the manufacturing cost of the electric water heater is reduced.

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 due to the convenient installation. An electric water heater generally includes an inner container and an electric heater disposed in the inner container to heat water in the inner container by the electric heater.

In the prior art, an electrical cavity is arranged at the end part of a shell of the electric water heater and used for installing electrical components, the electrical components comprise a power panel, an electric control panel and a temperature controller, the power panel is provided with a relay, the relay is used for strong current input, therefore, an electrical box is required to be arranged in the electrical cavity to place the power panel, and the electrical box generally adopts a sheet metal part to prevent the relay from igniting due to faults and causing ignition inside the shell. However, the electrical box is completely covered by the box cover, and when the electrical box is maintained in the later period, the box cover needs to be detached, so that the maintenance process is complicated, and the overall cost of the electrical box is higher, so that the cost of the electric water heater is increased.

In view of this, how to design an electric water heater which is convenient to maintain and reduces the manufacturing cost is the technical problem to be solved by the invention.

Disclosure of Invention

The invention provides an electric water heater, which is convenient for operators to maintain so as to improve the maintenance convenience and reduce the manufacturing cost of the electric water heater.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

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

the electric appliance comprises a shell, a handle and a handle, wherein the shell is transversely arranged, and a mounting cavity and an electric appliance cavity are arranged in the shell;

the inner container is transversely arranged in the mounting cavity and is used for storing water;

the electric heating module is arranged in the inner container and is used for heating water by electrifying;

the electric appliance box is arranged in the electric appliance cavity and comprises a box body and a box cover, wherein the box cover is slidably arranged on the box body and covers the opening of the box body.

In an embodiment of the present application, sliding grooves are formed on two side walls of the box body, sliding insertion portions are formed on two sides of the box cover, and the sliding insertion portions are inserted into the sliding grooves on the corresponding sides and can slide in the sliding grooves.

In an embodiment of the present application, a mounting cover plate is disposed in the housing, and the mounting cover plate divides the interior of the housing into the mounting cavity and the electrical appliance cavity; the box body is arranged on the mounting cover plate.

In one embodiment of the application, a mounting groove is formed in the mounting cover plate, a slot is formed in one side of the mounting groove, and a first screw hole is formed in the other side of the mounting groove; an inserting plate is arranged on one side of the box body, a first connecting plate is arranged on one side of the box body, and a first fixing hole is formed in the first connecting plate; the insert plate is inserted into the insert groove, and a screw penetrates through the first fixing hole and is in threaded connection with the first screw hole.

In this application embodiment, the opposite side of mounting groove still is provided with the second screw hole, first screw hole with second screw hole interval arrangement, be provided with the second connecting plate on the box cover, be provided with the second fixed orifices on the second connecting plate, the screw passes second fixed orifices threaded connection is in the second screw hole.

In one embodiment of the present application, the electrical heating module includes an outer sleeve having a first end portion of a closed configuration and a second end portion of an open configuration, and a ceramic heating core disposed within the outer sleeve; wherein, the outer sleeve of the electric heating module is sealed and extends into the inner container.

In an embodiment of the present application, the electric heating module further includes a connecting member, one end of the connecting member is provided with a pressing portion, and the other end of the connecting member is provided with a second connecting hole; the compressing portion abuts against the end portion of the ceramic heating core, and a bolt penetrates through the first connecting hole and the second connecting hole and is in threaded connection with a fastening nut.

In an embodiment of the application, the connecting piece includes a pressing plate, a connecting plate and a fixing plate, the pressing plate is connected with the fixing plate through the connecting plate, the pressing plate forms the pressing portion, and the fixing plate is provided with the second connecting hole.

In an embodiment of the present application, a positioning notch is disposed on the ceramic heating core, and the pressing portion is located in the positioning notch.

In an embodiment of the application, the ceramic heating core comprises a mounting seat, an insulating core body, an electric heating wire and a pull rod, wherein 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 and the insulating core body together, the electric heating wire is arranged on the insulating core body, and the mounting seat is provided with the positioning notch.

Compared with the prior art, the invention has the advantages and positive effects that: the box body of the electrical box is provided with the slidable box cover, the power panel is placed in the box body, and the relay on the power panel can be shielded and protected by utilizing the box cover, so that the purpose of ignition and flame retardance of the relay is met; meanwhile, when the electric water heater is maintained in the later period, the box cover can slide on the box body, the relay can be conveniently maintained and operated by sliding the box cover so as to expose the relay, the maintenance convenience is improved, and the use amount of box cover materials is reduced because the box cover partially shields the opening of the box body, so that the manufacturing cost of the electric water heater is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings without inventive labor.

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

FIG. 2 is a cross-sectional view of the electric water heater of the present invention;

FIG. 3 is an assembly view of the liner, the foaming pad and the mounting cover plate of the present invention;

FIG. 4 is a schematic structural diagram of the electrical box of the present invention;

FIG. 5 is a second schematic structural view of the electrical box of the present invention;

FIG. 6 is a schematic structural view of the mounting cover of the present invention;

FIG. 7 is a schematic view of the construction of the inventive shield;

FIG. 8 is a schematic view of the electric heating module of the present invention;

FIG. 9 is a schematic view of the structure of the connector of FIG. 8;

FIG. 10 is a cross-sectional view of the electrical heating module of FIG. 8;

fig. 11 is a partially enlarged view of the region B in fig. 10.

Reference numerals:

an inner container 1;

a convex part 11 and a connecting seat 12;

an electric heating module 2;

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

flanging 211 and cambered surface 212;

a first connection hole 2111;

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

a tensioning end 2231 and a positioning surface 2241;

a second coupling hole 240, a pressing plate 241, a coupling 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;

installing a cover plate 5;

a concave part 50, a first maintenance port 51, a water retaining rib 52, a water collecting tank 53, a water leakage detector 54, a shield 55, a second maintenance port 56, a water guiding ring 57 and a mounting groove 58;

water leakage hole 551, clamping hole 552, inserting groove 581 and first screw hole 582

A foaming cushion block 6;

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

an electric appliance box 7;

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

the relay 701, the sliding groove 711, the plug board 712, the first connecting plate 713 and the second connecting plate 721.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

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

The electric water heater generally comprises a water tank, an electric heating part, 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 part is inserted into the water storage cavity formed in the water tank, and the electric control device is used for controlling the electric heating part to be powered on and powered off to operate 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 an outer shell and an inner container, and an insulating layer is formed between the outer shell and the inner container. Wherein, the shell is generally made of plastic materials to meet the design requirements of beautiful and diversified shapes; the inner container can adopt a metal inner container or a plastic inner container according to requirements.

In addition, the heat preservation layer formed between shell and the inner bag, commonly used heat preservation material have: asbestos, sponge, foamed plastic, polyurethane foam and the like, and in order to obtain a good heat preservation effect in the conventional technology, a foaming mode is usually adopted to form a heat preservation layer.

Wherein, for the inner bag that adopts metal inner bag, because receive the influence of water quality, the inside easy emergence corruption of inner bag for this reason, still dispose the magnesium stick on the water tank, the magnesium stick inserts in the inside water storage cavity of water tank.

Magnesium is the lowest potential metal in the electrochemical series and is physiologically nontoxic. Therefore, the magnesium rod protective liner is very ideal. The size of the magnesium rod is directly related to the length of the time for protecting the inner container and the size of the protection effect, and the larger the magnesium rod is, the better the protection effect is and the longer the protection time is.

For the electric heating part, an electric heating mode such as an electric heating wire, magnetic energy or silicon tube heating can be adopted to heat the water stored in the water storage cavity.

The electric heating part in the invention adopts an electric heating module to heat water, and the following description is provided with reference to the accompanying drawings.

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

the shell 4 is transversely arranged, and an installation cavity and an electric appliance cavity are arranged in the shell;

the water storage tank comprises an inner container 1, wherein the inner container 1 is used for storing water, and an installation opening (not marked) is formed in the inner container 1;

the electric heating module 2 is arranged in the inner container and is used for heating water by electrifying;

and the electrical box 7 is arranged in the electrical cavity and comprises a box body 71 and a box cover 72, wherein the box cover is slidably arranged on the box body and covers the opening of the box body in a half way.

Specifically, water to be heated is contained in the inner container 1, wherein the inner container 1 is provided with a water inlet pipe 101 and a water outlet pipe 102 which extend to the inside of the inner container 1, cold water enters the inner container 1 through the water inlet pipe 101, and heated hot water is output from the water outlet pipe 102.

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

In addition, in the maintenance process, the lid need not to follow pull down on the box body, only need promote the lid slides, in order to expose the relay to make things convenient for operating personnel to change the maintenance the relay, and then realize simplifying the maintenance process and reduce the maintenance degree of difficulty.

In some embodiments, sliding grooves 711 are formed on two side walls of the box body, and sliding insertion parts (not labeled) are formed on two sides of the box cover, and are inserted into the sliding grooves on the corresponding sides and can slide in the sliding grooves.

Specifically, the box cover is slidably disposed in the sliding groove by using a sliding insertion part (for example, an inner folded edge formed on the box cover), and the box cover is matched with the sliding groove by using the sliding insertion part to realize sliding of the box cover on the box body.

In some embodiments, in order to form two cavities in the housing for respectively installing the inner container and the electrical appliance box, an installation cover plate 5 may be disposed in the housing, and the installation cover plate divides the interior of the housing into the installation cavity and the electrical appliance cavity; the box body is arranged on the mounting cover plate.

Specifically, the mounting cover plate is arranged in the shell and separates the inner container and the electrical box. The electrical box is fixedly mounted on the mounting cover plate, for this purpose, a mounting groove 58 is formed in the mounting cover plate, an insertion slot 581 is formed in one side of the mounting groove, and a first screw hole 582 is formed in the other side of the mounting groove; an inserting plate 712 is arranged on one side of the box body, a first connecting plate 713 is arranged on one side of the box body, and a first fixing hole is formed in the first connecting plate; the insert plate is inserted into the insert groove, and a screw penetrates through the first fixing hole and is in threaded connection with the first screw hole.

Specifically, when the box body is fixedly installed on the installation cover plate, the inserting plate is inserted into the inserting groove, then the first fixing hole on the first connecting plate is aligned with the first screw hole, and a screw penetrates through the first fixing hole and is screwed in the first screw hole, so that the box body is fixed on the installation cover plate.

In some embodiments, a second screw hole is further disposed on the other side of the mounting groove, the first screw hole and the second screw hole are spaced apart, a second connecting plate 721 is disposed on the box cover, a second fixing hole is disposed on the second connecting plate, and a screw passes through the second fixing hole and is screwed into the second screw hole.

Specifically, in a normal use state, in order to fix the box cover to prevent the box cover from freely sliding, the box cover can be fixed by a screw. Preferably, one of the first screw holes may serve as the second screw hole, and a second fixing hole, a first fixing hole and the corresponding first screw hole are aligned in fixing the box cover, and a screw is sequentially inserted through the second fixing hole, the first fixing hole and screwed into the first screw hole.

Second embodiment, the present embodiment adopts a structure of ceramic heating for the electric heating module, and specifically, as shown in fig. 8 to 11, 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 a flanging 211. Be provided with first connecting hole 2111 on flanging 211, electric heating module 2 still includes: a connecting member 24, one end of the connecting member 24 being provided with a pressing portion, the other end being provided with a second connecting hole 240; wherein the pressing portion abuts on an end of the ceramic heating core 22, and a bolt passes through the first connection hole 2111 and the second connection hole 240 and is threadedly connected with a fastening nut.

Specifically, in the electric heating module 2, after the ceramic heating core 22 is inserted into the outer sleeve 21 and is mounted 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 on the outside.

Wherein, 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 thereof so as to realize the pressing and fixing of the ceramic heating core 22; further, the first connection holes 2111 are aligned with the second connection holes 240, and then the connection pieces 24 are fastened to the flange 211 on the outer sheath 21 by bolts to complete the assembly of the electric heating module 2.

The connecting member 24 is fixed 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 a hole is not required to be additionally arranged on the ceramic heating core 22 to meet the requirement of bolt connection, so that the processing difficulty of the ceramic heating core 22 is reduced, and the manufacturing cost is further reduced.

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

Specifically, the connecting member 24 is composed of 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 may be an integral structure and formed by bending a metal plate. Wherein, the connecting piece 24 is wholly in a ladder structure, and the connecting piece 24 in the ladder structure shape can better meet the installation requirements on the shapes of the outer sleeve 21 and the ceramic heating core 22. 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 bent edge 244, and the edge 244 abuts against the side of the outer flange 211.

Specifically, for the fixing plate 243, the second connection hole 240 provided thereon needs to be aligned with the first connection hole 2111 of the flange 211 at the time of assembly to insert a bolt for fastening. And by providing the flange 244 on the fixing plate 243, the flange 244 will abut against the edge of the out-turned flange 211 to facilitate accurate alignment of the first coupling hole 2111 with the second coupling hole 240. Preferably, two angled flaps 244 may be provided on the fixing plate 243, and the two flaps 244 inclined relative to each other may be used to clamp the edge of the outer flange 211, so as to achieve accurate positioning.

In actual assembly, as for the number of the connecting pieces 24, a plurality of connecting pieces can be arranged 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 member 24 is pressed against the ceramic heating core 22, the pressing plate 241 on the connecting member 24 can be clamped in the positioning notch 220, so as to fix the ceramic heating core 22 in an accurate position.

The outer contour of the flange 211 may be polygonal, and the first connection holes 2111 are disposed at corners of the polygon, so that the positions of the connecting member 24 and the flange 211 are relatively fixed under the positioning action of the flange 244, and the mounting position and the mounting angle of the ceramic heating core 22 can be accurately positioned when the connecting member 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 extends into the inner container 1 from a mounting opening configured on the end part of the inner container 1 in a transversely arranged mode. In order to reduce the damage of the ceramic heating core caused by condensed water generated by the alternation of cold and heat in the air in the outer sleeve 21 in the using process, for the electric heating module 2, the outer sleeve 21 is transversely arranged in the inner container 1, and the outer sleeve 21 extends upwards in an inclined way along the direction from the outside to the inside of the inner container 1. And water flowing out of the outer sleeve 21 or water generated by other reasons is smoothly discharged out of the housing 4. A water discharge hole 41 is formed in the housing 4, and water in the housing 4 can be smoothly discharged from the water discharge hole 41, so that the reliability of the electric water heater can be improved.

And in the in-service use in-process, electric heating module 2 alright in order to use in horizontal inner bag 1 of placing, inner bag 1 transverse arrangement simultaneously in shell 4 to satisfy horizontal inner bag 1 of placing and adopt electric heating module 2 to realize the operation requirement of heating, and then improve and use the reliability.

In order to heat the water in the inner container 1, the inner container 1 is provided with an electric heating module 2, the electric heating module 2 generates heat by using a ceramic heating core 22, and an outer sleeve 21 is sleeved outside the ceramic heating core 22 to protect the ceramic heating core 22 through the outer sleeve 21. Wherein, the outer tube 21 adopts heat conduction materials such as copper aluminium to make to still have better heat conductivity when satisfying protection ceramic heating core 22, and then ensure that the heat that ceramic heating core 22 produced transmits the water in the inner bag 1 for via the outer tube 21 is quick.

In order to increase the heating efficiency and the reliability of use, the electric heating module 2 is arranged in the transversely arranged inner container 1 in an inclined manner. And, electric heating module 2 upwards extends at the slope in inner bag 1, like this, alright in order to increase the length of arranging of electric heating module 2 in inner bag 1, and then improve heating efficiency to satisfy the requirement of hot water output rate.

In addition, because the electric heating module 2 is installed on the inner container 1 in a manner of extending obliquely upwards, in the using process, after the air containing moisture outside enters the outer sleeve 21 and is condensed to form 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. Thus, the water drops 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 recessed portion 50 recessed towards the inside is provided on the mounting cover plate 5, a first maintenance opening 51 is provided in the recessed portion 50, a water guide ring 57 is provided around the first maintenance opening 51, and the water guide ring 57 extends towards the outside; the water guide ring 57 is provided with a shield 55, and the bottom of the shield 55 is provided with a water leakage hole 551; wherein, the outer sleeve 21 is sealed and extended into the inner container 1, the outer sleeve 21 is transversely arranged in the inner container 1, and the outer sleeve 21 extends upwards in an inclined way along the direction from the outside to the inside of the inner container 1; the outer end of the ceramic heating core passes through the first service opening 51, and the outer end of the ceramic heating core is shielded by a shield 55.

Specifically, in order to install the related electric control components and meet the requirements of later maintenance, an installation cover plate 5 is arranged on one end socket of the inner container 1, an electric appliance installation cavity is formed between the installation cover plate 5 and an end cover of the electric water heater, and the electric appliance installation cavity can be used for installing the related electric control devices such as an electric control board. Meanwhile, a first maintenance opening 51 is formed in the mounting cover plate 5, and the part of the electric heating module 2 exposed outside the inner container 1 can penetrate through the first maintenance opening 51 and extend into the electric appliance mounting cavity; when the ceramic heating core 22 or the electric heating wire in the electric heating module 2 needs to be maintained at a later stage, the convenient and fast maintenance operation can be carried out through the electric appliance installation cavity.

During the use process, condensed water is formed in the outer sleeve 21 due to the alternating of cold and heat, and meanwhile, the condensed water is formed in an 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 by the water guide ring 57 to flow into the water leakage holes 551 arranged at the bottom of the shield 55, 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 water leakage occurs in the condensate water formed in the electrical appliance mounting cavity, the protective cover 55 shields and protects the outer end part of the ceramic heating core 22, so that the condensate water formed in the electrical appliance mounting cavity can be prevented from damaging the ceramic heating core 22, and the use reliability is effectively improved.

In some embodiments, the water guide ring 57 and the side wall of the recess 50 form a slot (not labeled) therebetween, in which the shroud 55 is inserted.

Specifically, in order to facilitate and rapidly install the shield 55, a slot may be formed between the water guide ring 57 and the inner wall of the recess 50, and when assembling the shield 55, the shield 55 may be assembled by merely inserting the shield 55 into the slot.

In order to improve the assembling reliability, the side wall of the recess 50 is provided with a claw 501, and the shroud 55 is provided with a locking hole 552, in which the claw is locked.

Specifically, after the protective cover 55 is inserted into the insertion slot, the claws arranged on the inner wall of the recess 50 are locked in the locking holes, and the protective cover 55 is locked on the mounting cover plate in a clamping manner, so as to improve the assembly convenience.

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, and the shield 55 is 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 insertion slot on the one hand, and on the other hand, the ribs 502 can abut against the outer surface of the shield 55 to further secure the shield 55.

In one embodiment, a protruding portion 11 is provided at one end of the inner container 1, and the mounting opening is provided on the protruding portion 11.

Specifically, in order to facilitate installation of the electric heating module 2, a protruding portion 11 is provided at an end portion of the inner container 1, and the protruding portion 11 may be formed on the end cap of the inner container 1 by stamping or the like. Generally, the end socket of the transversely arranged liner 1 is an arc surface, and the protruding portion 11 protrudes out of the arc end surface of the end socket of the liner 1, so that a relatively flat mounting end surface can be formed on the protruding portion 11, and meanwhile, the mounting opening is formed in the upper opening of the protruding portion 11, so that the electric heating module 2 can be conveniently inserted into the mounting opening to be mounted and fixed on the protruding portion 11 of the liner 1.

In one embodiment, the outer sleeve 21 and the inner container 1 are connected to improve the sealing performance. 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 a connection portion 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 flanging 211, and the sealing ring 23 is clamped between the flanging 211 and the boss 11. The gasket 23 is interposed between the flange 211 and the boss 11, and a connection portion formed between the outer tube 21 and the liner 1 is sealed by the gasket 23.

In some embodiments, in order to realize that the outer sleeve 21 extends obliquely upward toward the inner container 1, at least two structural designs can be adopted.

In the first mode, the outer sleeve 21 is installed obliquely by designing the installation end face formed by the boss 11 as an inclined face, that is, the installation end face is arranged 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 in an inclined mode through the installing end face arranged in an inclined mode, so that the electric heating module 2 obliquely and upwards extends into the inner container 1 along the tax receipt center line of the inner container 1. And to the mounting end face, then in 1 forming process of inner bag for the formation mounting end face of bellying 11 forms certain inclination, like this, when installation electric heating module 2, only need to fix the installation of electric heating module 2 on bellying 11, alright arrange upwards in order to make electric heating module 2 at the inside slope of inner bag 1.

In a second mode, as shown in fig. 8, a second end of the outer sleeve 21 is provided with a flange 211, and an included angle is formed between a center line of the outer sleeve 21 and a perpendicular line of the flange 211.

Specifically, for the outer sleeve 21, when it is mounted and fixed, the plane formed by the flanging 211 serves as a mounting reference plane, and the center line of the outer sleeve 21 itself is arranged obliquely with respect to the plane formed by the flanging 211, that is, an acute angle is formed between the center line of the outer sleeve 21 and the perpendicular line of the flanging 211, so as to meet the requirement that the outer sleeve 21 extends obliquely upward.

In some embodiments, in order 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 portion of the outer sleeve 21, and the installation opening, in which the outer sleeve 21 is screwed, is formed with an internal thread (not labeled).

Specifically, when an operator makes up the liner in a factory, the sealing ring 23 is firstly 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 is in contact 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.

And as the outer sleeve 21 is gradually screwed down, the sealing ring 23 is squeezed between the flanging 211 and the boss 11, and finally the electric heating module 2 is assembled on the inner container 1.

In a preferred embodiment, in order to improve the connection reliability and connection strength between the outer sleeve 21 and the liner 1, the connection seat 12 may be welded to the boss 11, and the connection seat 12 may be provided with an internal threaded hole, for the internal threaded hole formed in the liner 1.

Specifically, form the internal thread hole on connecting seat 12, connecting seat 12 adopts welded mode fixed mounting on bellying 11, like this, alright in order to form enough long internal thread hole in order to satisfy the threaded connection's of outer tube 21 requirement through connecting seat 12 on inner bag 1, simultaneously, connecting seat 12 adopts welded mode to fix on inner bag 1 for have sufficient joint strength between connecting seat 12 and the inner bag 1.

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 the threaded installation of the outer sleeve 21 on the connecting seat 12. Meanwhile, the sealing ring 23 is clamped between the flanging 211 and the connecting seat 12, so that the requirement of sealing connection is met.

In other embodiments, because in the using process of the user, the interior of the electrical appliance installation cavity is easy to generate condensed water due to the interior or generate water leakage due to a fault, and the like, the ceramic heating core 22 is damaged due to the fact that water flows downwards, for this reason, the installation cover plate 5 is further provided with a water blocking rib 52, and the water blocking rib 52 is shielded above the first maintenance opening 51.

Specifically, dispose manger plate muscle 52 in the top of first maintenance mouth 51, when the intrinsic installation apron 5 of electrical apparatus installation cavity goes up out rivers downward flow, can shelter from rivers and then make rivers can't flow ceramic heating core 22 through manger plate muscle 52 on to realize manger plate muscle 52 and carry out water proof to ceramic heating core 22, and then improve and use the reliability.

For the water flowing to the bottom of the mounting cover plate 5, a water collecting groove 53 may be further provided at the lower edge of the mounting cover plate 5, and the water flowing downward may be collected by the water collecting groove 53. Specifically, the water collection groove 53 is provided below the first maintenance opening 51, and the water collection groove 53 is arranged in a region between the first maintenance opening 51 and the lower end portion of the water blocking rib 52. The water flowing down and the water flowing out of the outer sleeve 21 are blocked by the water blocking rib 52 and can flow into the water collecting groove 53 for temporary storage. The water temporarily stored in the water collecting tank 53 is heated and evaporated by using the heat generated in the operation process of the electric control device in the electric appliance mounting cavity, so that the influence on the user experience caused by the water flowing out of the water discharging hole 41 in the daily use process can be reduced.

When more water is present in the appliance installation chamber and the water in the water collection tank 53 overflows, the water overflowing from the water collection tank 53 is discharged from the lower water discharge hole 41.

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

Specifically, when water leaks from the inner container 1 due to a fault, water is rapidly accumulated at the bottom of the electrical installation cavity, and at the moment, the water level at the bottom rises to the water collecting tank 53 and is lower than the first maintenance port 51, and the water leakage detector 54 detects that water leakage occurs to realize automatic power-off operation of the electrical control components such as the electrical heating module 2, so as to reduce the occurrence of electric leakage. Wherein, the water leakage detector 54 is disposed in the water collection tank 53, and the detection head of the water leakage detector 54 is higher than the water collection tank 53.

In other embodiments, a shield 55 is further provided on the mounting cover 5, and the shield 55 shields the outer end of the ceramic heating core 22.

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

In some embodiments, in order to meet the requirement of accurate assembly, the electric heating appliance further comprises a foaming cushion block 6, and the foaming cushion block is arranged between the mounting cover plate 5 and the corresponding seal head.

Specifically, because the installation apron 5 need install fix on the head of inner bag 1's cambered surface structure, receive the influence of head cambered surface structure, in order to ensure that installation apron 5 can be reliable install on inner bag 1, then additionally set up foaming cushion 6 between installation apron 5 and head. The foaming cushion block 6 can set up the assorted surface according to the cambered surface shape of head, like this, through foaming cushion block 6 to installation apron 5 assist the installation in order to improve the equipment accuracy nature, more be favorable to improving the packaging efficiency.

In some embodiments, because the inner container 1 is no longer configured with a flange for connection, in order to meet the installation requirement of the temperature sensing probe in the temperature controller, an installation hole may be provided at one end of the inner container 1, and correspondingly, the inner container assembly further includes: and a temperature sensing module 3.

The temperature sensing module 3 comprises a heat conduction pipe 31 and a temperature controller 30, the head with the convex part 11 is also provided with a mounting hole, the heat conduction pipe 31 is transversely arranged at one end part of the liner 1 and is hermetically inserted into the liner 1, and a temperature sensing probe 32 of the temperature controller 30 is positioned in the heat conduction pipe 31; the mounting cover plate is provided with a second maintenance opening 56, and the outer end part of the heat conduction pipe penetrates through the second maintenance opening 56 and extends into the electric appliance mounting cavity.

Specifically, because the electric heating module 2 is installed on the end socket of the inner container 1 in a threaded connection manner, an installation hole is formed in the end socket, the heat pipe 31 is inserted into the installation hole in a sealing manner, the end part of the heat pipe 31 located in the inner container 1 is designed in a sealing manner, the temperature sensing probe 32 is installed inside the inner container 1 through the heat pipe 31, and then the temperature of the water in the inner container 1 is detected through the temperature sensing probe 32.

In the third embodiment, based on the first and second embodiments, in order to meet the requirements of improving the shock resistance of the electric heating module 2 during transportation and installing the electric heating module 2 on the transversely arranged inner container 1. The following structural improvement is made for the electric heating module 2.

As shown in fig. 10 to 11, the ceramic heating core 22 includes a mounting seat 221, an insulating core 222, an electric heating wire (not shown) and a tie rod 223, the mounting seat 221 being provided with a first through hole (not labeled), the insulating core 222 being provided with a second through hole (not labeled), the insulating core 222 being provided on the mounting seat 221, the tie rod 223 penetrating the first through hole and the second through hole and connecting the mounting seat 221 and the insulating core 222 together, the electric heating wire being provided on the insulating core 222.

Specifically, the insulating core 222 of the ceramic heating core 22 can be made of a ceramic material by sintering, and the mounting seat 221 is made of a heat-resistant insulating material, such as: ceramic materials may also be used. The insulating core 222 and the mounting seat 221 are connected through a pull rod 223, one end of the pull rod 223 can be provided with a tightening end 2231, the tightening end 2231 abuts against the insulating core 222, the other end of the pull rod 223 is in threaded connection with a locking nut, and the locking nut abuts against the outside of the mounting seat 221, so that the insulating core 222 and the mounting seat 221 are fixedly connected together. Then, the mounting seat 221 is connected and fixed with the outer sleeve 21, wherein the mounting seat 221 is provided with a positioning notch 220 in a manner of connecting with the outer sleeve 21.

On the one hand, the pull rod 223 can realize the connection between the insulating core 222 and the mounting seat 221, and on the other hand, the pull rod 223 can perform a structural reinforcement function on the insulating core 222 inside the insulating core 222, so as to effectively improve the structural strength of the insulating core 222 arranged on the mounting seat 221 in a suspended manner. In the transportation process, because the insulation core 222 is supported by the effective support columns of the pull rods 223 in the insulation core 222, the collision between the insulation core 222 and the outer sleeve 21 caused by vibration can be effectively reduced, and the reliability is further improved.

In a preferred embodiment, as shown in fig. 10 and 11, in order to better protect 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), a pull rod 223 sequentially passes through the third through hole, the second through hole and the first through hole, and a tightening tip 2231 abuts against the positioning block 224.

Specifically, the suspending end of the insulating core 222 is provided with a positioning block 224, and the tightening tip 2231 of the pull rod 223 abuts against the positioning block 224, so that the positioning block 224 bears the pressure generated by the tightening tip 2231. For the insulating core 222, since the contact area between the positioning block 224 and the insulating core 222 is large, the insulating core 222 can be prevented from being damaged by the tightening end 2231 during the process of tightening the locking nut, so as to improve the assembling reliability.

Further, the tie rod 223 may be provided with a threaded portion at each end portion, and the tie rod 223 may be screwed to the positioning block 224.

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 sheath 21.

The method specifically comprises the following steps: the inner wall of the closed structure formed by the first end of the outer sleeve 21 is an arc surface 212, a positioning surface 2241 matched with the arc surface 212 is arranged on the positioning block 224, 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 can 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 at the free end of the outer sleeve 21.

Because the arc surface 212 has the function of automatic centering, the ceramic heating core 22 can be accurately installed in place, on one hand, the space between the ceramic heating core 22 and the inner wall of the outer sleeve 21 can be kept in an accurate range, and on the other hand, the free end of the ceramic heating core 22 is positioned and supported by the arc surface 212 of the outer sleeve 21, which is more beneficial to improving the shock resistance of the ceramic heating core 22.

In the case of the arc surface 212, a hemispherical surface is preferably used, and the positioning surface 2241 is provided with a chamfer for the edge of the positioning block 224.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding claims.

Claims

1. An electric water heater, comprising:

2. The electric water heater according to claim 1, wherein sliding grooves are formed on two side walls of the box body, sliding insertion parts are formed on two sides of the box cover, and the sliding insertion parts are inserted into the sliding grooves on the corresponding sides and can slide in the sliding grooves.

3. The electric water heater according to claim 1, wherein a mounting cover plate is provided in the housing, the mounting cover plate dividing the interior of the housing into the mounting cavity and the appliance cavity; the box body is arranged on the mounting cover plate.

4. The electric water heater according to claim 3, wherein the mounting cover plate is provided with a mounting groove, one side of the mounting groove is provided with an insertion slot, and the other side of the mounting groove is provided with a first screw hole; an inserting plate is arranged on one side of the box body, a first connecting plate is arranged on one side of the box body, and a first fixing hole is formed in the first connecting plate; the insert plate is inserted into the insert groove, and a screw penetrates through the first fixing hole and is in threaded connection with the first screw hole.

5. The electric water heater according to claim 4, wherein the other side of the mounting recess is further provided with a second screw hole, the first screw hole and the second screw hole are arranged at a distance, the box cover is provided with a second connecting plate, the second connecting plate is provided with a second fixing hole, and a screw passes through the second fixing hole and is screwed in the second screw hole.

6. The electric water heater according to any one of claims 1-5, wherein the electric heating module comprises an outer sleeve and a ceramic heating core, a first end of the outer sleeve being of a closed configuration and a second end of the outer sleeve being of an open configuration, the ceramic heating core being disposed in the outer sleeve; wherein, the outer sleeve of the electric heating module is sealed and extends into the inner container.

7. The electric water heater of claim 6, wherein the electric heating module further comprises a connecting member, one end of the connecting member is provided with a pressing portion, and the other end is provided with a second connecting hole; the pressing portion abuts against the end portion of the ceramic heating core, and a bolt penetrates through the first connecting hole and the second connecting hole and is in threaded connection with a fastening nut.

8. The electric water heater according to claim 7, wherein the connecting member comprises a pressing plate, a connecting plate and a fixing plate, the pressing plate is connected with the fixing plate through the connecting plate, the pressing plate forms the pressing portion, and the fixing plate is provided with the second connecting hole.

9. The electric water heater according to claim 6, wherein the ceramic heating core is provided with a positioning notch, and the pressing portion is located in the positioning notch.

10. The electric water heater according to claim 9, wherein 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 and the insulating core body together, the electric heating wire is arranged on the insulating core body, and the positioning notch is arranged on the mounting seat.