CN117537485A - Electric water heater and assembling method thereof - Google Patents

Abstract

The invention discloses an electric water heater and an assembling method thereof, wherein the electric water heater comprises a shell, an inner container supporting piece and a supporting disc seat, and the assembling method comprises the following steps: connecting a second end cap to a second port of the housing; installing the liner in the shell from a first port of the shell, and supporting the liner on the second end cover through a liner supporting piece; sleeving the supporting disc seat on the top of the inner container, and connecting the supporting disc seat with the first port of the shell; disposing the first end cap on the support tray base; a foaming cavity is formed among the inner surface of the shell, the outer surface of the liner, the supporting disc seat and the second end cover, and foaming materials are injected into the foaming cavity to form a foaming layer; the connection of the fastening pieces on the shell and between the shell and the end cover is omitted, and the integrity and the structural strength of the electric water heater are greatly improved; in addition, the labor intensity of operators in the installation process is low, and the heat preservation effect and the installation efficiency are obviously improved.

Description

Electric water heater and assembling method thereof

Technical Field

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

Background

The kitchen baby as a small-capacity electric water heater product gradually goes into the kitchen of thousands of households, is favored by many households because of small volume, quick heating and convenient installation and use, is usually installed at a kitchen or toilet's wash platform for washing dishes, vegetables, washing hands and the like, can meet the supply of small-water-quantity hot water, and saves electricity compared with a water heater.

The shell of traditional little kitchen is plastic molding structure, and the fastener such as bolt will control or upper and lower half shell butt joint become tubular structure after the shaping, if the application number is: 202120643479.6, the patent document named electric water heater, in addition, the shell is also connected with the upper cover plate and the lower cover plate through fastening by fastening members, so that in the actual installation process, the installation strength of operators is high, a plurality of fastening structures are required to be installed, the problem of poor stability of the whole structure of the electric water heater caused by the fact that the fastening members are not firmly installed easily occurs, in addition, in the maintenance process, the structure of the connecting position is damaged by repeated assembly and disassembly of the fastening members, the whole electric water heater is damaged, the service life is short, and the economic benefit is poor.

Disclosure of Invention

The invention aims to provide an electric water heater and an assembling method thereof, which are used for solving the problems that the installation of the shells of the electric water heaters such as the prior kitchen appliances or the installation between the shells and the end covers depends on the fixation of fasteners, the installation process is complicated, the labor intensity is high, the overall structural strength and the stability are poor and the like in the prior art

In order to achieve the aim of the invention, 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 of an integrally formed cylindrical structure, and the two ends of the shell are respectively connected with a first end cover and a second end cover;

the inner container is arranged in the shell and comprises a top arc surface, a vertical peripheral side surface and a bottom arc surface;

the liner support piece is positioned between the second end cover and the liner and used for supporting the liner;

the supporting disc seat is positioned between the inner container and the first end cover, and an electric appliance chamber is formed on the supporting disc seat and used for supporting an electric device.

In another aspect, the present invention also provides an assembling method of an electric water heater, for the electric water heater, the assembling method includes:

connecting the second end cap to a second port of the housing;

installing a liner in the housing from a first port of the housing, the liner supported on the second end cap by the liner support;

the supporting disc seat is sleeved on the top of the inner container, and the supporting disc seat is connected with the first port of the shell;

disposing the first end cap on the support tray base;

and a foaming cavity is formed among the inner surface of the shell, the outer surface of the liner, the supporting disc seat and the second end cover, and foaming materials are injected into the foaming cavity to form a foaming layer.

In some embodiments of the present application, the first port of the housing is formed with a first curled edge that bends inwards, the outer periphery of the supporting disc seat is formed with a horizontal connection surface, an inner overlapping edge and an outer overlapping edge that extend upwards are formed on the connection surface along the radial direction of the connection surface respectively, the outer edge of the first end cover is located on the outer side of the inner overlapping edge, and the first curled edge is clamped on the inner side of the outer overlapping edge.

In some embodiments of the present application, the lower opening of the housing is formed with an inwardly bent second curled edge, the second end cover is formed with an upwardly extending connection flange, the peripheral side of the second end cover is formed with a downwardly extending connection flange, the second end cover is mounted downwards from the first end opening of the housing until the second curled edge is clamped on the connection flange, and at this time, the connection flange is positioned in the housing.

In some embodiments of the present application, an upper heat-insulating member is further formed between the support disc seat and the inner container, a following surface adapted to the top arc surface is formed on the lower surface of the upper heat-insulating member, and a penetrating mounting opening is formed on the upper heat-insulating member, and before the support disc seat is mounted, the upper heat-insulating member is sleeved above the inner container.

In some embodiments of the present application, the electrical apparatus is outdoor week is formed with the support inner edge that downwardly extending, the upper surface of going up the heat preservation spare still is formed with downwardly extending's support recess, go up the heat preservation spare and install the back, follow with the supporting disk seat the first port of shell is installed to last heat preservation spare top, until the bottom support of support inner edge is connected the bottom of support recess, the supporting disk seat with form annular buffer between the heat preservation spare.

In some embodiments of the present application, the liner support is a lower heat-insulating member, a following surface adapted to the bottom arc surface of the liner is formed above the lower heat-insulating member, and the lower heat-insulating member is mounted above the second end cover from the first port of the housing in advance before the liner is mounted.

In some embodiments of the present application, the liner support member is formed with a plurality of support portions in a dispersed manner, and each of the support portions is formed with a conformal surface adapted to the bottom arc surface; and each supporting part is also provided with a vertical upward supporting baffle arm, each supporting part is fixed on the second end cover in advance, after the second end cover is installed, the inner container is installed on the inner container supporting piece, and the supporting baffle arms are in contact connection with the vertical peripheral side surfaces of the inner container.

In some embodiments of the present application, at least two positioning members are further formed between the inner container and the outer shell along the peripheral side of the inner container in a scattered manner, and after the inner container is mounted in the outer shell, the positioning members are mounted outside the inner container.

In some embodiments of the present application, the shell is sheet metal forming, the surface of shell be formed with the parallel welding seam of center pin of shell, be formed with the installation sign on the supporting disk seat, when the supporting disk seat is installed, the installation sign corresponds the welding seam position to improve the mounted position accuracy.

Compared with the prior art, the invention has the advantages and positive effects that:

according to the electric water heater and the assembling and installing method thereof, the outer shell is of an integrally formed cylindrical structure, the second end cover is connected to the second port of the outer shell in advance, then the inner container is arranged in the outer shell from the first port, the supporting disc seat is sleeved above the inner container, then the first end cover is arranged on the supporting disc seat, connection between the outer shell and the first end cover, the second end cover and the supporting disc seat is realized, connection of fasteners on the outer shell and between the outer shell and the end cover is omitted, and the integrity and the structural strength of the electric water heater are greatly improved; in addition, the labor intensity of operators in the installation process is low, and the heat preservation effect and the installation efficiency are obviously improved.

Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings.

Drawings

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

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

FIG. 2 is a schematic diagram of the electric water heater;

FIG. 3 is one of the cut-away schematic views of an electric water heater;

FIG. 4 is a schematic diagram of a second cut-away view of an electric water heater;

FIG. 5 is a schematic view of the connection of the support tray to the housing and the first end cap;

FIG. 6 is a schematic diagram showing the separation of the support tray and the upper thermal insulation member;

FIG. 7 is one of the schematic views of the first end cap;

FIG. 8 is a second schematic diagram of the separation of the support tray and the upper thermal insulation member;

FIG. 9 is a second schematic view of the first end cap;

FIG. 10 is a schematic view of a retainer structure;

fig. 11 is a front view of an electric water heater;

FIG. 12 is a cross-sectional view A-A of FIG. 11;

FIG. 13 is an enlarged schematic view at B in FIG. 12;

FIG. 14 is a schematic view of the lower insulation position;

FIG. 15 is a schematic view of the attachment of the support portion to the second end cap;

in the drawing the view of the figure,

100. a housing;

101. a first crimp;

102. a second crimp;

110. a first end cap; 111. a buckle; 112. a connection part;

120. a second end cap;

121. connecting and flanging;

122. connecting the convex edges;

200. an inner container;

300. an upper heat preservation piece;

304. a buffer area;

310. a support groove;

400. a support tray seat;

410. a connection surface;

420. an outer overlapping edge;

430. an inner overlapping edge;

440. a butt joint part;

441. a limiting block;

450. a mounting groove;

451. a clamping part;

460. supporting the inner edge;

500. a support part;

510. a support arm;

520. filling the cavity;

600. a positioning piece;

610. positioning the cambered surface;

620. reinforcing rib plates;

700. a lower heat preservation member;

800. and a drainage pipeline.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

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 or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be mechanically coupled, directly coupled, or indirectly coupled via an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

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.

As shown in fig. 1-4, the present application proposes an electric water heater, which includes a housing 100 and a liner 200 located in the housing 100, wherein a first port and a second port are respectively formed at two ends of the housing 100, and a first end cover 110 and a second end cover 120 are detachably disposed on the first port and the second port respectively.

For the kitchen-class electric water heater, the shell 100 is in a vertical placement state, and in the installation state, the second end cover 120 is positioned below to provide support for the whole electric water heater.

The inner container 200 is vertically supported on the inner surface of the second end cap 120 by the inner container support, a heating cavity is formed in the inner container 200, and water in the heating cavity is heated by the heating device for a user to use.

The liner 200 is a conventional approximately elliptical liner 200, the outer surface of the liner 200 is composed of a top arc surface, a bottom arc surface and a vertical peripheral side surface, the top arc surface is arranged at the top of the vertical peripheral side surface and is tangential with the vertical peripheral side surface, and the bottom arc surface is arranged at the bottom of the vertical peripheral side surface and is tangential with the vertical peripheral side surface.

A supporting tray 400 is provided between the inner container 200 and the first end cap 110, and an electric appliance chamber is formed therein for installing components such as a heating pipe, a water inlet pipe, a water outlet pipe, a temperature controller, etc. for installing the electric water heater.

On the basis of the electric water heater, the application also provides an electric water heater assembly method, which specifically comprises the following steps:

s1: attaching the second end cap 120 to the second port of the housing 100; the manufacturing of the housing 100 includes bending and welding, and after bending the metal plate into a cylindrical structure, the connection position is welded to form the cylindrical structure.

S2: mounting the liner 200 in the outer case 100 from the first port of the outer case 100, the liner 200 being supported on the second end cap 120 by the liner support; after the connection of the second end cover 120 is completed, the outer shell 100 is vertically placed, the second end cover 120 is located below, at this time, the first port above the outer shell 100 is an opening, the liner 200 is placed in the outer shell 100 from the position of the first port, and the structures such as a heating pipe, a magnesium rod and the like are connected in advance above the liner 200.

S3: the supporting disc seat 400 is sleeved on the top of the liner 200, and the supporting disc seat 400 is connected with the first port of the shell 100; in order to ensure the accuracy of the installation position of the support disc seat 400, the installation mark on the support disc seat 400 corresponds to the welding line position of the shell 100 during installation.

The support tray 400 is used for mounting electric devices, and after the connection of the liner 200 is completed, the support tray 400 is mounted above the liner 200, the electric devices are mounted in the electric device chamber in the support tray 400, and then each electric device is connected with a heating pipe or the like.

S4: the first end cap 110 is covered on the supporting disc seat 400, so that the upper side of the shell 100 is encapsulated.

S5: finally, a foaming cavity is formed between the inner surface of the outer case 100, the outer surface of the inner container 200, the inner container supporter, and the second end cap 120, and a foaming material is injected into the foaming cavity to foam to form a foaming layer.

The second end cover 120 is formed with a curved surface structure extending downward, which is beneficial to reducing deformation influence of foaming expansion on the second end cover 120 in the foaming process.

Referring to fig. 5 and 13, in some embodiments of the present application, both ends of the case 100 are formed with first and second beads 101 and 102, respectively, which are bent inward.

The shell 100 adopts a sheet metal forming mode, so that a connecting gap generated by assembling after injection molding of the shell 100 can be omitted, the risk that foaming materials overflow from the connecting gap is reduced, and in the foaming material expansion process, the deformation on the cylindrical shell 100 is not obvious, and the quality of a finished product is good.

Referring to fig. 5-7, in some embodiments of the present application, a connection surface 410 is formed on a support disc seat 400, an inner overlapping edge 430 and an outer overlapping edge 420 extending upward are formed on the connection surface 410, and a water storage tank is formed between the inner overlapping edge 430 and the outer overlapping edge 420, so that external water can be prevented from directly entering an electrical appliance room, and water accumulation is reduced.

During installation, the first curled edge 101 is clamped inside the outer lap joint edge 420, so that the connection and fixation of the shell 100 and the supporting disc seat 400 are realized.

The outer edge of the first end cover 110 is located outside the inner overlapping edge 430, so as to realize connection and fixation of the support disc seat 400, the first end cover 110 and the housing 100.

In order to further realize stable connection between the support tray 400 and the second end cover 120, in some embodiments of the present application, a plurality of docking portions 440 are formed on the sidewall of the electrical appliance chamber along the circumferential direction in a scattered manner, a plurality of buckles 111 are correspondingly formed on the first end cover 110, and the first end cover 110 is detachably connected with the support tray 400 through the buckles 111.

The abutting portion 440 is a clamping groove structure formed on the side wall of the electrical room, a limiting block 441 extending towards the center direction of the electrical room is formed above the clamping groove, and a positioning end extending outwards is formed at the tail end of the buckle 111.

For easy installation, a downward inclined surface is formed above the stopper 441, and an inward inclined guide surface is also formed on the side of the positioning end contacting the stopper 441.

In the process of installing the first end cover 110 to the direction of the supporting disc seat 400, under the interaction of the inclined surface on the limiting block 441 and the guide surface on the positioning end, the buckle 111 deflects inwards until the positioning end is clamped under the limiting block 441, and at this time, under the action of the buckle 111, the first end cover 110 is fixedly connected with the supporting disc seat 400.

As shown in fig. 8 and 9, in other embodiments of the present application, a plurality of mounting grooves 450 extending downward are formed on the connection surface 410 of the support disc base 400 in a dispersed manner, each mounting groove 450 is circumferentially distributed, and a clamping portion 451 protruding from a side wall of the mounting groove 450 is formed on a side wall of each mounting groove 450 in the same rotation direction.

The inner surface opposite to the support tray 400 is formed with connection portions 112, the connection portions 112 are located on the inner surface of the support tray 400 and extend downward, and the connection portions 112 are arranged in one-to-one correspondence with the clamping portions 451.

The connection portion 112 has an L-shape with connection legs formed thereon.

A clamping gap is formed between the clamping portion 451 and the bottom of the mounting groove 450, when the mounting is performed, each clamping portion 451 on the first end cover 110 corresponds to each mounting groove 450, then, after the first end cover 110 is rotated by a certain angle along the direction of the clamping portion 451, the connection support leg on each connection portion 112 is rotationally connected to the lower portion of the clamping portion 451, so that the connection between the first end cover 110 and the support disc seat 400 is realized.

Referring to fig. 11 to 13 again, the second end cap 120 is formed with a connection flange 121 extending toward the liner 200, the connection flange 121 gradually expands outwardly along the extending direction thereof, and the connection flange 121 is formed with a plurality of slits in a dispersed manner.

In the installation process, first, the second end cover 120 is installed downwards from the upper opening position of the housing 100, and the connection flange 121 is retracted under the action of the opening until the second end cover 120 extends out of the bottom of the housing 100.

The opening can provide the space for the connecting flange 121 to be retracted toward the center during the installation of the second end cover 120, and besides, the state of the connecting flange 121 being expanded can also ensure the tight connection between the inner wall of the housing 100 and the connecting flange 121, so as to reduce the connection gap.

The bottom periphery of the second end cap 120 is formed with a connecting flange 122, and after the second end cap 120 is mounted in place downward, the second curled edge 102 at the bottom of the housing 100 is clamped on the connecting flange 122, so as to mount the second end cap 120 and the housing 100.

In some embodiments of the present application, an upper thermal insulation piece 300 is further formed between the supporting disc seat 400 and the liner 200, a following surface adapted to the top arc surface is formed at the bottom of the upper thermal insulation piece 300, and in the installation state, the bottom of the upper thermal insulation piece 300 is in close contact connection with the top arc surface through the following surface.

The upper thermal insulation member 300 is made of foam material, a gap is formed between the upper thermal insulation member 300 and the inner wall of the housing 100, and a penetrating mounting opening is formed in the upper thermal insulation member 300 and is communicated with the electrical room.

Referring again to fig. 3 and 4, the upper thermal insulation member 300 is formed therein with a supporting groove 310 extending downward, the supporting tray 400 is formed thereon with a supporting inner edge 460 extending downward, and in the installed state, the bottom of the supporting inner edge 460 is in contact connection with the bottom of the supporting groove 310, and an annular buffer zone 304 is formed between the supporting tray 400 and the upper thermal insulation member 300.

In this embodiment, a foaming cavity is formed among the upper insulation 300, the inner surface of the outer case 100, the second end cap 120, and the outer surface of the inner container 200, and the foaming cavity is filled with foaming material.

In the process of filling the foaming material, in order to ensure sufficient filling and heat preservation characteristics of the liner 200, the amount of foaming in the foaming cavity needs to be sufficient, redundant foaming material extends to the upper part of the upper heat preservation member 300 along a gap between the upper heat preservation member 300 and the inner wall of the shell 100, and the buffer area 304 is arranged, so that the foaming material can be buffered, the pressure of expansion of the foaming material on each component part in the electric water heater is reduced, and the deformation is reduced.

In addition, the buffer area 304 is also beneficial to installing the support tray 400, and enough installation space is reserved in the connection process between the support tray 400 and the outer shell 100 and the upper heat preservation member 300 after the inner container 200 and the upper heat preservation member 300 are installed.

In the installation process, since the inner container 200 and the upper heat-insulating member 300 are pre-installed in the outer shell 100, and then the supporting disc seat 400 is installed in the outer shell 100, and since the supporting disc seat 400 is directly clamped with the first curled edge 101 of the outer shell 100, a foaming gap is formed between the supporting disc seat 400 and the upper heat-insulating member 300, which is beneficial to the installation of the supporting disc seat 400 in the outer shell 100, the installation is more convenient, and the problems of no installation space and difficult installation caused by close contact are avoided.

Referring to fig. 1, fig. 4, and fig. 10 again, in some embodiments of the present application, in order to further fix the position of the liner 200 in the outer shell 100, at least two positioning members 600 are further formed between the liner 200 and the outer shell 100 in a dispersed manner, and angles between adjacent positioning members 600 are equal, so as to ensure that the peripheral side of the liner 200 is stably fixed, and prevent the peripheral side from being offset.

Each positioning piece 600 is a shell structure with a U-shaped section, a positioning cambered surface 610 is formed on the end surface of the shell structure, which is contacted with the liner 200, and the shape of the positioning cambered surface 610 is matched with the outer surface of the liner 200.

The positioning piece 600 is connected between the liner 200 and the shell 100 in a clamping way through the positioning cambered surface 610 of the positioning piece 600, the upper end of the positioning piece 600 is connected with the top cambered surface of the liner 200 in a contact way, and the lower end of the positioning piece 600 is connected with the vertical peripheral side surface of the liner 200 in a contact way, and the top size of the positioning piece 600 is larger than the bottom size, so that the vertical peripheral side surface of the liner 200 can limit the position of the positioning piece 600, and additional fixation is avoided.

Reinforcing ribs 620 are also formed in the positioning member 600 for improving the structural strength of the positioning member 600.

The positioning piece 600 is designed into a shell structure, which is beneficial to improving the contact area between the foaming material and the liner 200, and the foaming material can be filled at the two sides of the reinforcing rib plate 620 in the positioning piece 600 so as to improve the heat insulation of the liner 200.

After the positioning member 600 is mounted in step S1, after the liner 200 is mounted, the positioning member 600 is mounted between the liner 200 and the outer case 100 in a dispersed manner, thereby realizing further positioning of the liner 200 and preventing the liner 200 from shifting left and right.

Referring to fig. 14, in some embodiments of the present application, the liner support member is a lower heat-insulating member 700, the lower heat-insulating member 700 and the upper heat-insulating member 300 are both foam structures, for better positioning, a liner 200 support groove is formed above the lower heat-insulating member 700, and a following surface adapted to the bottom arc surface of the liner 200 is formed at the bottom of the liner 200 support groove.

In the case that the liner support is the lower insulation member 700, the liner support needs to be separately installed, the installation step of the lower insulation member 700 is between S1 and S2, the lower insulation member 700 is placed in the outer case 100 from the first port of the outer case 100 after the installation of the second end cap 120 is completed, and the liner 200 is placed on the lower insulation member 700 after the installation of the lower insulation member 700 is completed.

In this embodiment, the foaming chamber is enclosed mainly by the inner surface of the outer case 100, the outer surface of the inner container 200, the support tray 400 (or the upper insulating member 300), and the lower insulating member 700.

In order to prevent the inner container 200 from shaking on the surface of the lower heat-insulating member 700, the depth of the supporting groove of the inner container 200 on the lower heat-insulating member 700 is higher than the position where the circular arc surface at the bottom is tangent to the vertical peripheral side surface, so as to increase the stability of the inner container 200.

Referring to fig. 11 and 15, in another embodiment, the liner support member is a plurality of support portions 500 connected to the inner surface of the second end cover 120, and each support portion 500 is formed with a following surface adapted to the bottom arc surface; each supporting portion 500 is further formed with a supporting blocking arm 510 vertically upwards, and the supporting blocking arms 510 are in contact connection with the vertical peripheral side surfaces.

Referring to the drawings specifically, for improving the heat insulation performance of the liner 200, a filling cavity 520 is formed on a side of each supporting portion 500 away from the liner 200, and the filling cavity is beneficial to the volume of the foaming cavity and increases the heat insulation thickness.

In order to be more matched with the liner 200, the bottom of the upper heat-insulating member 300 is formed with a follow-up surface matched with the top arc surface, and in the installation state, the bottom of the upper heat-insulating member 300 is in close contact connection with the top arc surface through the follow-up surface.

Unlike the previous embodiment, the liner support in this embodiment does not require an additional installation process, and is installed simultaneously with the second end cover 120, which is beneficial to reducing installation steps and manufacturing costs, and the foaming material has an increased volume and a better heat preservation effect.

Referring again to fig. 3, in other embodiments of the present application, the appliance room is further connected with a drain pipe 800, the upper end of the drain pipe 800 communicates with the lowest position of the installation port of the upper thermal insulation member 300, and the lower end penetrates the second end cover 120 to drain the condensed water in the appliance room out of the housing.

Before the inner container 200 is installed in the process of installing the drain pipeline 800, after the second end cover 120 is installed, the lower end of the drain pipeline 800 is inserted into the drain hole of the second end cover 120, then the inner container 200 is installed (when the inner container supporting piece is the lower heat-insulating piece 700, the lower heat-insulating piece 700 is installed first, the drain pipeline 800 penetrates out of the lower heat-insulating piece 700), after the inner container 200 is installed, the upper end of the drain pipeline 800 is pressed and connected onto the arc surface at the top of the inner container 200, and then the upper heat-insulating piece 300 is fixed.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative embodiments of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be covered by the present invention, and the scope of the present invention shall be defined by the appended claims.

Claims (10)

1. An electric water heater, comprising:

the shell is of an integrally formed cylindrical structure, and the two ends of the shell are respectively connected with a first end cover and a second end cover;

the inner container is arranged in the shell and comprises a top arc surface, a vertical peripheral side surface and a bottom arc surface;

the liner support piece is positioned between the second end cover and the liner and used for supporting the liner;

the supporting disc seat is positioned between the inner container and the first end cover, and an electric appliance chamber is formed on the supporting disc seat and used for supporting an electric device.

2. A method of assembling an electric water heater as set forth in claim 1, the method comprising:

connecting the second end cap to a second port of the housing;

installing a liner in the housing from a first port of the housing, the liner supported on the second end cap by the liner support;

the supporting disc seat is sleeved on the top of the inner container, and the supporting disc seat is connected with the first port of the shell;

disposing the first end cap on the support tray base;

and a foaming cavity is formed among the inner surface of the shell, the outer surface of the liner, the supporting disc seat and the second end cover, and foaming materials are injected into the foaming cavity to form a foaming layer.

3. The method of assembling an electric water heater of claim 2,

the first port of shell is formed with the first turn-up of inwards buckling, the periphery of supporting disk seat is formed with horizontal joint face, be formed with the interior overlap joint edge and the outer overlap joint edge of upwards extending respectively along its radial on the joint face, will the outer edge of first end cover is located interior overlap joint edge outside, first turn-up joint is in outer overlap joint edge is inboard.

4. The method of assembling an electric water heater of claim 2,

the lower opening of shell is formed with the second turn-up of inwards buckling, be formed with the connection turn-ups that upwards extend on the second end cover, the week side of second end cover is formed with the connection protruding edge that extends downwards, will the second end cover is followed first port department of shell installs downwards until the second turn-up joint is in on the connection protruding edge, at this moment, the connection turn-ups is fixed a position in the shell.

5. The method of assembling an electric water heater of claim 2,

an upper heat-insulating part is further formed between the supporting disc seat and the inner container, a follow-up surface matched with the top arc surface is formed on the lower surface of the upper heat-insulating part, a penetrating mounting opening is formed on the upper heat-insulating part, and the upper heat-insulating part is sleeved above the inner container before the supporting disc seat is mounted.

6. The method of assembling an electric water heater according to claim 5, wherein,

the electric appliance is characterized in that a supporting inner edge extending downwards is formed at the periphery of the electric appliance chamber, a supporting groove extending downwards is formed in the upper surface of the upper heat-insulating part, after the upper heat-insulating part is installed, a supporting disc seat is installed above the upper heat-insulating part from the first port of the shell until the bottom support of the supporting inner edge is connected with the bottom of the supporting groove, and an annular buffer area is formed between the supporting disc seat and the heat-insulating part.

7. The method of assembling an electric water heater of claim 2,

the inner container support piece is a lower heat preservation piece, a follow-up surface matched with the bottom arc surface of the inner container is formed above the lower heat preservation piece, and the lower heat preservation piece is mounted above the second end cover from a first port of the shell in advance before the inner container is mounted.

8. The method of assembling an electric water heater of claim 2,

the liner support piece comprises a plurality of support parts, and a conformal surface matched with the bottom arc surface is formed on each support part; and each supporting part is also provided with a vertical upward supporting baffle arm, each supporting part is fixed on the second end cover in advance, after the second end cover is installed, the inner container is installed on the inner container supporting piece, and the supporting baffle arms are in contact connection with the vertical peripheral side surfaces of the inner container.

9. The method of assembling an electric water heater of claim 2,

at least two locating pieces are formed between the inner container and the outer shell along the peripheral side of the inner container in a dispersing mode, and after the inner container is installed in the outer shell, the locating pieces are installed on the outer side of the inner container.

10. The method of assembling an electric water heater of claim 2,

the shell is formed by sheet metal, a welding seam parallel to the central axis of the shell is formed on the surface of the shell, a mounting mark is formed on the supporting disc seat, and when the supporting disc seat is mounted, the mounting mark corresponds to the position of the welding seam so as to improve the accuracy of the mounting position.