CN220707735U - Double-liner electric water heater - Google Patents

Abstract

The utility model discloses an electric water heater with double inner containers, which comprises: a housing; the first inner container is arranged in the shell, and a first through hole is formed in the first inner container; the second inner container is arranged in the shell, and a second through hole is formed in the second inner container; the edge of the second through hole is provided with a communication part which is of an annular structure and extends out of the second liner; wherein the communication part is inserted into the first through hole, and the free end of the communication part is provided with a positioning structure configured to position and distance between the first liner and the second liner. The positioning structure is used for positioning the position and the distance between the first liner and the second liner, so that quick and accurate positioning is provided for the assembly of the first liner and the second liner; meanwhile, the distance between the first liner and the second liner is shortened, and the installation space of the whole machine is reduced.

Description

Double-liner electric water heater

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to an electric water heater with double inner containers.

Background

At present, water heaters are household appliances commonly used in daily life of people, and are classified into electric water heaters, gas water heaters, heat pump water heaters, solar water heaters and the like. The electric water heater is widely used because of its convenient use. The electric water heater can be divided into a water storage type electric water heater and an instant heating type electric water heater according to the heating power, and the water storage type electric water heater is provided with a water tank, so that the electric water heater has the characteristics of large water yield, stable water temperature and the like, and is purchased and used by more families. The electric water heater can be divided into a single-liner water heater and a double-liner electric water heater according to the number of the liners. Compared with a single-liner water heater, the double-liner electric water heater with the same lifting position has the advantages of high heating speed and higher hot water outlet rate. There is no limit structure between the double inner containers of the traditional double-liner electric water heater, which can not ensure the insertion depth and the double liner distance when the double liners are assembled, and a limit tool is required to be manufactured independently. However, due to high assembly accuracy requirements, the fixture cannot effectively ensure consistency.

The prior Chinese patent with the publication number of CN219177965U discloses a double-liner electric water heater, which comprises a first liner, wherein a first heating cavity is formed in the first liner, and a water outlet pipe is arranged on the first liner; the second inner container is internally provided with a second heating cavity, and a water inlet pipe is arranged on the second inner container; the first electric heating assembly comprises a plurality of first electric heating pipes and a plurality of flow separation plates, the flow separation plates are arranged side by side, and the first electric heating pipes penetrate through the flow separation plates; the second electric heating assembly comprises a second electric heating pipe; the first inner container is communicated with the second inner container, a first communicating pipe and a second communicating pipe are arranged between the first inner container and the second inner container, the first communicating pipe and the second communicating pipe are split type pipe groups, each split type pipe group comprises a first pipe body and a second pipe body, flanges are respectively arranged on the first pipe body and the second pipe body, and the two flanges are connected together in a sealing mode.

The electric water heater with the double containers is connected through the first pipe body, the second pipe body and the two flanges, and the first pipe body and the second pipe body are used for enlarging the distance between the two inner containers, so that the electric water heater with the double containers is large in size. In view of this, how to design a water heater technology that improves the assembly accuracy of two inner containers and reduces the distance between the two inner containers to reduce the indoor space occupation of the whole machine is a technical problem to be solved by the present utility model.

Disclosure of Invention

The utility model provides a double-liner electric water heater, which can improve the assembly precision of two liners and reduce the distance between the two liners so as to reduce the indoor space occupation of the double-liner electric water heater.

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

in one aspect, the present utility model provides a dual liner electric water heater comprising:

a housing;

the first inner container is arranged in the shell, and a first through hole is formed in the first inner container; and, a step of, in the first embodiment,

the second inner container is arranged in the shell, and a second through hole is formed in the second inner container; the edge of the second through hole is provided with a communication part which is of an annular structure and extends out of the second liner;

wherein the communication part is inserted into the first through hole, and the free end of the communication part is provided with a positioning structure configured to position and distance between the first liner and the second liner.

Compared with the prior art, the utility model has the advantages and positive effects that: the first through hole is formed in the first inner container, the second through hole is formed in the second inner container, the communicating part is arranged at the edge of the second through hole, and when the first inner container is installed, the communicating part is inserted into the first through hole, so that the first inner container and the second inner container are mutually communicated; meanwhile, the first inner container and the second inner container are connected through the communication part, the structures such as a flange plate in the prior art are avoided, the distance between the first inner container and the second inner container is effectively shortened, the overall size of the double-inner-container electric water heater is reduced, the installation space of the whole electric water heater is finally reduced, and the experience effect of a user is improved.

In some embodiments of the present application, the positioning structure includes an open slot disposed on an outer peripheral side of the communicating portion, an edge of the first through hole is adapted to the open slot, and a bottom surface of the open slot abuts against the edge of the first through hole.

Through set up the open slot in the periphery side of intercommunication portion, the bottom surface of open slot offsets with the edge of first through-hole and leans on, and the first inner bag is accepted through the open slot to the second inner bag like this, is convenient for accurate assembly location.

In some embodiments of the present application, the open slot comprises an annular structural slot.

In some embodiments of the present application, the bottom surface of the annular structural groove is a conical surface or a horizontal surface.

The bottom surface of the open slot is set to be a conical surface or a horizontal surface, so that the structure is simple, and the processing and the manufacturing are convenient.

In some embodiments of the present application, the open slot includes a linear slot, a position of a hole wall of the first through hole corresponding to the linear slot is provided with a bump, and when the first liner and the second liner are assembled together, the bump is clamped on the open slot.

Through setting up the open slot into the linear groove to set up the lug on the pore wall of first through-hole, on the one hand be convenient for process, on the other hand, when first inner bag and second inner bag assembly, the lug card can improve the precision of assembly on the open slot, guarantees the uniformity of insertion depth when two courages assembly.

In some embodiments of the present application, the open groove is welded to the first liner and forms a weld within the first liner.

The open slot is welded with the first inner container, and a welding seam is formed in the first inner container, so that the inner container space can be fully utilized for welding operation.

In some embodiments of the present application, the positioning structure includes a protruding portion that is disposed around the outer peripheral side of the communicating portion, and an upper edge of the protruding portion abuts against the first liner.

Through setting up the bellying in the periphery side of intercommunication portion, the upper edge of bellying offsets with first inner bag and leans on, is favorable to realizing the accurate positioning when first inner bag and second inner bag are assembled to guarantee the quality of processes such as follow-up welding and enamel.

In some embodiments of the present application, the boss comprises:

the arc-shaped protrusions are arranged on the outer peripheral side of the communication part at intervals.

In some embodiments of the present application, the communication portion is welded to the first liner, and a weld is formed inside the first liner.

In some embodiments of the present application, the communication portion is a turned-up edge provided on the second through hole.

Drawings

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

Fig. 1 is a schematic structural diagram of an electric water heater with double inner containers according to the present utility model;

FIG. 2 is an enlarged view of a portion of area A of FIG. 1;

fig. 3 is a schematic structural diagram of another electric water heater with double inner containers according to the present utility model;

FIG. 4 is an enlarged view of a portion of region B of FIG. 3;

FIG. 5 is a schematic diagram of another electric water heater with dual inner containers according to the present utility model;

FIG. 6 is an enlarged partial schematic view of region C of FIG. 5;

FIG. 7 is a second schematic diagram of another dual-liner electric water heater according to the present utility model;

FIG. 8 is a partially enlarged schematic illustration of region D of FIG. 7;

fig. 9 is a schematic structural diagram of another electric water heater with double inner containers according to the present utility model;

fig. 10 is an enlarged partial schematic view of the area E in fig. 9.

Reference numerals illustrate:

the first liner 2, the profiling platform 21, the first through hole 22, the protruding block 221, the first left seal head 23, the first right seal head 24 and the first cylinder 25;

the second liner 3, the second through hole 31, the communication part 32, the positioning structure 33, the opening groove 331, the annular structure groove 3311, the linear groove 3312, the protruding part 332, the arc-shaped protruding part 3321, the second left sealing head 34, the second right sealing head 35 and the second cylinder 36.

Detailed Description

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

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

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

In the present utility model, 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 utility model. 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 utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

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

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

For a water tank of an electric water heater, the water tank generally comprises a shell and an inner container, and an insulation layer is formed between the shell and the inner container. Wherein, the shell is generally made of plastic materials so as to meet the design requirements of beautiful and diversified shapes; the inner container can be a metal container body or a plastic container body according to the requirement.

In addition, the heat preservation that forms between shell and the inner bag, the heat preservation material that commonly uses has: asbestos, sponge, foam, polyurethane foam, etc., and in order to obtain a good heat-insulating effect, in the conventional technology, a heat-insulating layer is usually formed by adopting a foaming mode.

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

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

The water tank is also provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is used for conveying cold water into a water storage cavity formed in the water tank, and hot water in the water storage cavity is output from the water outlet pipe.

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

For the electric control board, the electric control board is used for receiving detection signals sent by related sensors (such as a water temperature sensor and a flow sensor) and controlling the electric heating component to be powered on and powered off.

When the electric water heater works, the electric heating component is controlled by the electric control board to be electrified and heated, and when the water temperature of the water in the water tank reaches a set value, the electric heating component is controlled by the electric control board to be powered off.

Referring to fig. 1 to 10, the utility model provides a dual-liner electric water heater, which comprises a water tank, an electric heater and an electric control board, wherein the water tank comprises a shell, a first liner 2 and a second liner 3, and heat insulation materials are filled between the first liner 2, the second liner 3 and the shell.

The double-liner electric water heater comprises a vertical double-liner electric water heater and a horizontal double-liner electric water heater. The following description will take a horizontal double-liner electric water heater as an example.

In this embodiment, the first liner 2 is disposed in the outer shell, the first liner 2 includes a first left seal head 23, a first right seal head 24, and a first cylinder 25, and a first through hole 22 is formed in the first cylinder 25;

more specifically, the bottom of the first cylinder 25 of the first liner 2 is provided with a profiling platform 21, the profiling platform 21 is manufactured by stamping, and the first through hole 22 is formed in the profiling platform 21.

The second liner 3 is arranged in the shell, the second liner 3 comprises a second left sealing head 34, a second right sealing head 35 and a second cylinder 36, and a second through hole 31 is formed in the second cylinder 36; the edge of the second through hole 31 is provided with a communication part 32, and the communication part 32 is of a hollow annular structure and extends out of the second liner 3;

wherein the communication portion 32 is inserted into the first through hole 22, and a free end of the communication portion 32 is provided with a positioning structure 33, the positioning structure 33 being configured for positioning a position and a distance between the first liner 2 and the second liner 3.

Specifically, the communication portion 32 and the second liner 3 are integrally formed, and only the communication portion 32 or the positioning structure 33 is required to be welded to the first liner 2 during the process of assembling the first liner 2 and the second liner 3.

In the actual composition process, the positional relationship between the first liner 2 and the second liner 3 is first adjusted so that the first through hole 22 corresponds to the position of the communication portion 32, and thus, the first liner 2 and the second liner 3 are accurately clamped together at the corresponding positions by positioning the positioning structure 33.

Specifically, during installation, the communicating part 32 is inserted into the first through hole 22 to realize mutual communication of the first inner container 2 and the second inner container 3, and the positioning structure 33 is arranged at the free end of the communicating part 32, so that the positioning structure 33 is used for positioning the position and the distance between the first inner container 2 and the second inner container 3, thereby providing quick and accurate positioning for the assembly of the first inner container 2 and the second inner container 3, keeping the consistency of the insertion depth during the assembly of the double inner containers, avoiding poor welding and enamel, reducing the reject ratio, ensuring the straight-through rate of production, and being beneficial to improving the production efficiency; meanwhile, the first liner 2 and the second liner 3 are connected by the communication part 32, so that the distance between the first liner 2 and the second liner 3 is effectively shortened, the overall size of the double-liner electric water heater is reduced, and finally the installation space of the whole electric water heater is reduced.

As shown in fig. 1, the distance between the first liner 2 and the second liner 3 is defined by the distance between the first liner 2 and the second liner 3 in which the communication portion 32 is exposed.

In some embodiments of the present application, the first liner 2 and the second liner 3 are arranged transversely, the first liner 2 is located above the second liner 3, the bottom of the second liner 3 is provided with a first mounting port and a second mounting port, a water inlet pipe is arranged in the first mounting port, and a water outlet pipe is arranged in the second mounting port.

As shown in fig. 1, 3 and 5, a plurality of communication parts 32 may be provided between the first and second inner containers 2 and 3, and the specific number may be determined according to the needs of the water heater.

In the present embodiment, the number of the communication portions 32 is two. The two communicating portions 32 are provided at intervals along the longitudinal direction of the first cylinder 25 and the second cylinder 36. The communicating part 32 plays a role in communicating water flow, and meanwhile, the communicating part 32 can also accommodate the water outlet pipe to penetrate through and penetrate into the first liner 2 according to actual needs, so that the water outlet pipe can be distributed in the first liner 2 and the second liner 3.

Meanwhile, the top end of the water outlet pipe extends into the upper end of the first liner 2, namely, the water outlet pipe extends into the first liner 2 from the second liner 3, and the top end of the water inlet pipe extends into the upper end of the first liner 2. In addition, in order to meet the requirement of heating water in the inner container, the electric water heater with the double inner containers is also provided with an electric heating pipe.

Specifically, since the second liner 3 is disposed below the first liner 2, an electric heating pipe needs to be disposed in the second liner 3, and the electric heating pipe heats water in the second liner 3, so that the formed hot water will rise to the top and enter the first liner 2.

Specifically, an electric heating pipe may be further disposed at one end of the first inner container 2, so that both one end of the first inner container 2 and one end of the second inner container 3 are provided with electric heating pipes. The electric heating pipes in the two inner containers can be started to work at the same time, and can be independently electrified to start heating according to actual needs.

Referring to fig. 1, in some embodiments of the present application, the positioning structure 33 includes an open groove 331 disposed on an outer peripheral side of the communicating portion 32, an edge of the first through hole 22 is matched with the open groove 331, and a bottom surface of the open groove 331 abuts against the edge of the first through hole 22.

Specifically, through setting up open slot 331 in the periphery side of intercommunication portion 32 to form the step structure in the periphery side of intercommunication portion 32, the bottom surface of open slot 331 offsets with first through-hole 22 and leans on, and first inner bag 2 assembles on the step of open slot 331 promptly, and first inner bag 2 is accepted through the bottom surface of open slot 331 to second inner bag 3, can make first inner bag 2 and second inner bag 3 keep certain distance, the accurate assembly location of first inner bag 2 and second inner bag 3 of being convenient for simultaneously.

As shown in connection with fig. 2, in some embodiments of the present application, the open slot 331 includes an annular structural slot 3311.

Specifically, by setting the opening groove 331 as the annular structure groove 3311, the annular structure groove 3311 is simple in structure, convenient to process and manufacture, and beneficial to shortening the processing period.

As shown in connection with fig. 3 and 4, in some embodiments of the present application, the bottom surface of the annular structural channel 3311 is a conical surface or horizontal surface.

Specifically, in the case that the bottom surface of the annular structural groove 3311 is a tapered surface, the bottom edge of the first through hole 22 contacting the bottom surface of the annular structural groove 3311 is also a tapered surface, so that the bottom surface of the annular structural groove 3311 corresponds to the bottom edge of the first through hole 22, and when the first liner 2 and the second liner 3 are assembled, the bottom surface of the annular structural groove 3311 and the bottom edge of the first through hole 22 can be assembled tightly by stitching, so that the overall structure is more stable. In the case where the bottom surface of the annular structural groove 3311 is a horizontal surface, the lower edge of the corresponding first through hole 22 is also a horizontal surface. It is understood that the shape of the bottom surface of the annular structural channel 3311 includes, but is not limited to, the two forms described above.

As shown in fig. 5, 6, 7 and 8, in some embodiments of the present application, the open slot 331 includes a linear slot 3312, and a bump 221 is disposed at a position corresponding to the linear slot 3312 on a hole wall of the first through hole 22, and when the first liner 2 and the second liner 3 are assembled together, the bump 221 is clamped on the open slot 331.

Specifically, by setting the opening groove 331 as the linear groove 3312 and setting the bump 221 on the wall of the first through hole 22, when the first liner 2 and the second liner 3 are assembled, the bump 221 is clamped on the opening groove 331, so that the assembly accuracy can be improved, and the uniformity of the insertion depth during the double liner assembly can be ensured.

Specifically, the number of the linear grooves 3312 may be set according to actual needs, and in this embodiment, the number of the linear grooves 3312 is four. Four linear grooves 3312 are provided at equal intervals on the outer peripheral side of the communication portion 32.

In some embodiments of the present application, the open groove 331 is welded with the first liner 2, and a weld is formed inside the first liner 2.

Specifically, in the process of assembly welding, the first liner 2 can be supported by the bottom surface of the open groove 331, so that the connection between the first liner 2 and the second liner 3 is more stable. The open groove 331 is welded with the first liner 2, and a weld is formed in the first liner 2, so that the liner space can be fully utilized to perform welding operation. Meanwhile, in the welding process, the first inner container 2 and the second inner container 3 can be kept relatively fixed, and therefore welding quality is improved.

As shown in fig. 9 and 10, in some embodiments of the present application, the positioning structure 33 includes a protruding portion 332 that is disposed around the outer peripheral side of the communicating portion 32, and an upper edge of the protruding portion 332 abuts against the first liner 2.

Specifically, the protruding portion 332 is disposed on the outer peripheral side of the communicating portion 32, and the upper edge of the protruding portion 332 abuts against the first liner 2, so that accurate positioning during assembly of the first liner 2 and the second liner 3 is facilitated, and quality of subsequent welding, enamel and other procedures is guaranteed.

The outer edge of the boss 332 is spaced from the center line of the communication portion 32 by a distance greater than the inner diameter of the first through hole 22, which facilitates efficient assembly. In the present embodiment, the outer diameter of the communication portion 32 is substantially equal to the inner diameter of the first through hole 22, or the inner diameter of the first through hole 22 is slightly larger than the outer diameter of the communication portion 32.

It should be noted that, a certain distance exists between the upper edge of the protruding portion 332 and the upper surface of the communicating portion 32, so that the communicating portion 32 is convenient to be inserted into the first through hole 22.

In some embodiments of the present application, the boss 332 includes:

a plurality of arc-shaped protrusions 3321, the plurality of arc-shaped protrusions 3321 being disposed at intervals on the outer peripheral side of the communication portion 32.

Specifically, a plurality of arc-shaped projections 3321 are provided at equal intervals on the outer peripheral side of the communication portion 32. The number of arcuate projections 3321 in this embodiment is four. Of course, the number of the arc-shaped protrusions 3321 may be set according to actual situations.

In other embodiments, the protruding portion 332 is a circular ring provided on the outer peripheral side of the communication portion 32.

It is understood that the shape of the boss 332 includes, but is not limited to, the shape described above, as other forms are possible.

In some embodiments of the present application, the communication portion 32 is welded with the first liner 2, and a weld is formed inside the first liner 2.

Specifically, the communicating part 32 and the first liner 2 are welded together, so that the first liner 2 and the second liner 3 are assembled to form the double-liner electric water heater; the weld joint formed in the first liner 2 is smoothly transited.

The first liner 2 and the second liner 3 are internally provided with enamel layers which cover all welding parts, so that hidden danger of corrosion caused by no porcelain area is avoided, and the service life of the liner is ensured.

In some embodiments of the present application, the communication portion 32 is a turned-out edge provided on the second through hole 31.

Specifically, the appearance entity of the communicating portion 32 is a turned-up edge disposed on the second through hole 31, and in this embodiment, the turned-up edge is manufactured by a stamping process, and by adopting such a structure, the welding seam can be reduced, the sealing performance of the liner is better, and the service life is longer.

Specifically, in the processing process of the liner: first, punching a first through hole 22 on a plate of a first inner container 2, and punching a second through hole 31 on a plate of a second inner container 3; then, forming the plate of the first liner 2 and the plate of the second liner 3 into a cylindrical structure to obtain a first cylinder 25 and a second cylinder 36;

then, the first cylinder 25 and the second cylinder 36 are placed on the molds, respectively, and punched. Wherein, in the punching process, the first through hole 22 and the second through hole 31 play a role of positioning, specifically, the profiling platform 21 is punched on the first cylinder 25, and the flanging is punched on the second cylinder 36;

then, a positioning structure 33 is manufactured on the flanging so as to accurately position the first cylinder 25 and the second cylinder 36 during assembly; after the positioning and assembling of the first cylinder 25 and the second cylinder 36 are completed; then welding, specifically, welding the first left end socket 23 and the first right end socket 24 with two ends of the first cylinder 25 respectively to form a first liner 2, and welding the second left end socket 34 and the second right end socket 35 with two ends of the second cylinder 36 respectively to form a second liner 3;

finally, the first liner 2 and the second liner 3 are subjected to the procedures of sand blasting, enamel and the like.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (6)

1. The utility model provides a two inner bag electric water heater which characterized in that includes:

a housing;

the first inner container is arranged in the shell, and a first through hole is formed in the first inner container; and, a step of, in the first embodiment,

the second inner container is arranged in the shell, and a second through hole is formed in the second inner container; the edge of the second through hole is provided with a communication part which is of an annular structure and extends out of the second liner;

wherein the communication part is inserted into the first through hole, and the free end of the communication part is provided with a positioning structure which is configured to be used for positioning the position and the distance between the first liner and the second liner; the positioning structure comprises an open slot arranged on the outer peripheral side of the communication part, the edge of the first through hole is matched with the open slot, and the bottom surface of the open slot is propped against the edge of the first through hole.

2. The dual liner electric water heater as claimed in claim 1, wherein the open slot comprises an annular structural slot.

3. The dual liner electric water heater as claimed in claim 2, wherein the bottom surface of the annular structural groove is a conical surface or a horizontal surface.

4. The electric water heater with double inner containers according to claim 1, wherein the open slot comprises a linear slot, a bump is arranged at a position of the hole wall of the first through hole corresponding to the linear slot, and the bump is clamped on the open slot when the first inner container and the second inner container are assembled together.

5. The dual liner electric water heater as set forth in claim 1 wherein said open slot is welded to said first liner and forms a weld within said first liner.

6. The electric double-liner water heater as claimed in any one of claims 1 to 5, wherein the communication portion is a turned-out edge provided on the second through hole.