CN212006210U - Electric water heater - Google Patents

Abstract

The utility model discloses an electric water heater, which relates to the technical field of water heaters. The electric water heater comprises a water heater shell with an inner shell cavity, an air outer circulation component and an air inner circulation component. The air is introduced into the room, the air external circulation component is built in the shell cavity and includes the first indoor air inlet end, the air internal circulation component is used for internal circulation of the indoor air, and the air internal circulation component is built in the shell cavity and includes the indoor second air intake The first indoor air inlet end and/or the indoor second air inlet end is provided with a waterproof structure for preventing water from entering the shell cavity. The electric water heater of the utility model can effectively improve the bathroom environment, has a reasonable and reliable structure, and has a good waterproof effect.

Description

water heater

technical field

The utility model relates to the technical field of water heaters, in particular to an electric water heater.

Background technique

The bathroom is not only used as a bathing space but also as a toilet. There are often peculiar smells in the bathroom or problems such as dampness in the bathroom or stuffy air environment due to daily bathing, especially in bad weather. How to improve it effectively and conveniently The bathroom environment has gradually become a more concerned issue for consumers. In addition, the functions of the existing water heaters are relatively single and cannot meet the needs of consumers.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a novel electric water heater, which can effectively improve the bathroom environment, has a reasonable and reliable structure, and has a good waterproof effect.

In order to achieve the above purpose, the present invention provides an electric water heater, which comprises:

The water heater shell is provided with a shell cavity;

an air external circulation assembly for discharging indoor air to the outside or introducing outdoor air into the room, the air external circulation assembly is built in the housing cavity and includes a first indoor air inlet end; and

an air internal circulation component for internal circulation of indoor air, the air internal circulation component is built in the shell cavity and includes a second indoor air inlet end;

In the air inner circulation assembly, the indoor first air inlet end and/or the indoor second air inlet end are provided with a waterproof structure for preventing water vapor from entering the shell cavity.

Optionally, the waterproof structure may include:

an end cover for closing the opening of the water heater shell and provided with an external air inlet;

a waterproof plate, located on the inner side of the end cap and provided with an inner air inlet; and

The end water filtering cavity is formed between the end cover and the waterproof plate and communicated with the outer air inlet and the inner air inlet respectively.

Optionally, the waterproof structure may further include a peripheral waterproof wall surrounding the air inlet of the end water filtering cavity.

Further, the peripheral waterproof wall of the air inlet may include a first waterproof peripheral wall connected to the inner wall of the end cover and a second waterproof peripheral wall connected to the outer wall of the waterproof plate, and the first waterproof peripheral wall is connected to the outer wall of the waterproof plate. One of the second waterproof peripheral walls is formed with an annular inserting groove, and the other is formed as an annular inserting wall.

Further, the vertical projection of the inner air inlet on the end cover and the outer air inlet may be arranged staggered.

Optionally, the end cover and the waterproof plate are arranged in parallel, and the distance between the end cover and the waterproof plate is H, and the shortest dislocation distance L between the vertical projection and the outer air inlet satisfies: L≥ 5mm or L≥H.

In some embodiments, the outer air inlet is a plurality of through holes formed on the end cover, and a plurality of blind holes are formed on the outer wall surface of the end cover corresponding to the area of the vertical projection, The shape of the through hole is the same as that of the blind hole.

Further, the waterproof structure may further include a drainage hole provided on the end cover and arranged along the cavity bottom of the end water filtering cavity.

Further, the diameter of the drainage hole is not less than 5mm.

Optionally, the air inner circulation assembly further includes an inner circulation flow channel, a temperature adjustment device and an inner circulation fan arranged in the inner circulation flow channel, and the temperature adjustment device includes a heating device for raising the air temperature and/or Or refrigeration units for lowering air temperature.

In some embodiments, the electric water heater further includes a control module, the air outer circulation assembly further includes an outer circulation flow channel and an outer circulation fan disposed in the outer circulation flow channel, and the control module is respectively connected with the inner circulation flow channel. The circulation fan, the temperature adjustment device and the outer circulation fan are connected, and the control module is configured to dry and dehumidify the indoor environment by activating the temperature adjustment device, the inner circulation fan and the outer circulation fan.

The electric water heater of the utility model is provided with an air outer circulation component and an air inner circulation component in the shell cavity of the water heater shell. The indoor air can be internally circulated to perform corresponding treatment on the indoor air, thereby improving the quality of the indoor air and effectively improving the indoor environment; in addition, the electric water heater of the present utility model has the first indoor air intake of the air external circulation component. The air inlet and/or the indoor second air inlet end of the air internal circulation assembly are provided with a waterproof structure, which can prevent water vapor from entering the shell cavity through the indoor first air inlet end and/or the indoor second air inlet end, and avoid entering the shell cavity. The components are damaged due to the influence of water, and the structure is reasonable and reliable.

Other features and advantages of the present invention will be described in detail in the detailed description section that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification, and together with the following specific embodiments, are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the attached image:

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

2 is a schematic structural diagram of a waterproof structure of an electric water heater according to a specific embodiment of the present invention;

Fig. 3 is the perspective view of Fig. 2, wherein, the vertical projection of the inner air inlet on the end cap is seen through the figure;

Fig. 4 is the sectional view of A-A of Fig. 2;

Fig. 5 is the partial enlarged schematic diagram of Fig. 4;

Fig. 6 is the sectional view of B-B of Fig. 2;

FIG. 7 is a partial enlarged schematic view of FIG. 6 .

Description of reference numerals

1 Water heater shell 11 Shell cavity

2 Indoor first air intake end 21 Outdoor exhaust end

3 Indoor second air inlet 31 Indoor air outlet

4 End cap 41 Outer air inlet

42 First waterproof peripheral wall 43 Decorative blind hole

44 Drain hole 5 Waterproof plate

51 Inner air inlet 52 Second waterproof peripheral wall

6 End filter chamber 7 Temperature adjustment device

8 Internal circulation fan 9 External circulation fan

12 Inner tank 13 Water inlet pipe

14 Outlet pipe 15 Sewage pipe

16 Heating body

Detailed ways

The specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

The electric water heater according to the present invention is described below with reference to the accompanying drawings. The electric water heater can effectively improve the bathroom environment, has a reasonable and reliable structure, and has a good waterproof effect.

1 to 7 , the electric water heater of the present invention includes a water heater shell with a shell cavity, an air outer circulation component and an air inner circulation component, and the air outer circulation component is used to discharge indoor air outdoors or introduce outdoor air indoors, The air outer circulation component is built in the shell cavity 11 and includes the indoor first air inlet end 2, the air inner circulation component is used for internal circulation of indoor air, and the air inner circulation component is built in the shell cavity 11 and includes the indoor second air intake end 3. Wherein, the indoor first air inlet end 2 and/or the indoor second air inlet end 3 are provided with a waterproof structure for preventing water from entering the shell cavity 11 .

Air internal circulation component Air internal circulation component The bathroom is not only used as a bathing space but also as a toilet. There are often problems such as peculiar smell in the bathroom, or the bathroom is easily damp or the air environment is stuffy due to daily bathing. The shell cavity 11 of 1 is provided with an air outer circulation component and an air inner circulation component. The air outer circulation component can discharge the indoor dirty air to the outside or introduce the outdoor fresh air into the room. The air inner circulation component can internally circulate the indoor air. In order to carry out corresponding treatment of indoor air, for example, the air circulation component can include heating device for increasing indoor temperature, air filtering device for purifying indoor air, etc., thereby improving indoor air quality and effectively improving indoor environment. . In addition, the electric water heater integrates multiple functions, and users can reduce the number of additional electrical appliances purchased to improve the indoor environment. In addition, since the outer air circulation component and the air inner circulation component are additionally arranged in the shell cavity 11 of the electric water heater of the present invention, the air outer circulation component and the air inner circulation component are respectively provided with an indoor first air inlet end 2 and an indoor second air circulation component. At the air inlet end 3, water can easily enter from the indoor first air inlet end 2 and/or the indoor second air inlet end 3, so that other components in the shell cavity 11 may be invaded by water and affect the normal use of the electric water heater . Therefore, the electric water heater of the present invention is provided with a waterproof structure at the indoor first air inlet end 2 of the air outer circulation component and/or the indoor second air inlet end 3 of the air inner circulation component, thereby preventing water from passing through the indoor first air inlet end. The wind end and/or the indoor second air inlet end enter the shell cavity 11, so that the components in the shell cavity 11 are prevented from being damaged due to the influence of water, and the structure is reasonable and reliable.

It should be noted that there are various arrangements of the air external circulation component and the air internal circulation component in the shell cavity 11, and the indoor first air inlet end 2 of the air external circulation component and the indoor air internal circulation component of the indoor air circulation component. The arrangement of the second air inlet end 3 can be varied. When the indoor first air inlet end 2 and/or the indoor second air inlet end 3 are located in places that are easily contacted by water, they can be arranged at the corresponding air inlet ends. Waterproof structure to ensure the stability and reliability of the electric water heater. Wherein, when the air external circulation assembly is used to discharge indoor air to the outside, the indoor first air inlet end 2 is used as the indoor air intake end, and when the air external circulation assembly is used to introduce outdoor air into the room, the indoor first air intake end The end 2 can also be used as the indoor air outlet. Of course, the indoor first air inlet end 2 and the indoor second air inlet end 3 may be independent air inlet ends, or may share one air inlet end; there may also be one or more air inlets at the air inlet end. The utility model is not limited to this. In addition, the waterproof structure can also be various. For example, a waterproof cover is provided at the air inlet end that is easily contacted by water, so as to prevent water from directly entering the air inlet end. Of course, other waterproof structures can be used, which will be illustrated below. .

Optionally, as shown in FIGS. 4 to 7 , the waterproof structure may include an end cover 4 , a waterproof plate 5 and an end water filtering cavity 6 . The end cover 4 is used to close the opening of the water heater housing 1 and is provided with an external air inlet 41 . The waterproof plate 5 is located on the inner side of the end cover 4 and is provided with an inner air inlet 51. The end water filtering cavity 6 is formed between the end cover 4 and the waterproof plate 5 and communicated with the outer air inlet 41 and the inner air inlet 51 respectively. The waterproof structure includes a peripheral waterproof wall surrounding the air inlet of the end water filter cavity 6 , so that water can be prevented from entering the shell cavity 11 from the connection portion between the end cover 4 and the waterproof plate 5 . The waterproof wall at the periphery of the air inlet can be a detachable installation structure, such as a detachable butt-plug structure, or a fixed installation structure, such as an adhesive sealing structure.

In some embodiments, the peripheral waterproof wall of the air inlet may include a first waterproof peripheral wall 42 connected to the inner wall of the end cover 4 and a second waterproof peripheral wall 52 connected to the outer wall of the waterproof plate 5 . The first waterproof peripheral wall 42 is connected with One of the second waterproof peripheral walls 52 is formed with an annular insertion groove, and the other is formed as an annular insertion wall. And, when the annular plugging wall cooperates with the annular plugging groove to form a paired plugging structure, the first waterproof peripheral wall 42 extends inward and stops against the outer wall of the waterproof plate 5 and/or the second waterproof peripheral wall 52 extends outward and It abuts against the inner wall of the end cover 4, so that a tight water stop structure can be formed between the end cover 4 and the waterproof plate 5, which can effectively prevent water from entering. As shown in FIG. 4 to FIG. 7 , the first waterproof peripheral wall 42 on the inner wall of the end cover 4 is formed as an annular inserting wall, and the second waterproof peripheral wall 52 on the outer wall of the waterproof plate 5 is formed with an annular inserting groove. When the connecting wall cooperates with the annular inserting groove to form a paired inserting structure, the second waterproof peripheral wall 52 extends outward and stops against the inner wall of the end cover 4 to form a tight waterproof structure. Of course, the present invention is not limited to this, the first waterproof peripheral wall 42 on the inner wall of the end cover 4 can also be formed with an annular inserting groove, and the second waterproof peripheral wall 52 on the outer wall of the waterproof plate 5 is formed as an annular inserting wall; When the annular plugging wall cooperates with the annular plugging groove to form a paired plugging structure, the first waterproof peripheral wall 42 can also extend inward at the same time and stop against the outer wall of the waterproof plate 5 . Wherein, the position relatively close to the center of the electric water heater is defined as "inside", and the position relatively far from the center of the electric water heater is defined as "outside".

Further, in order to prevent water vapor from being directly splashed into the inner air inlet 51 , the vertical projection of the inner air inlet 51 on the end cover 4 and the outer air inlet 41 may be arranged staggered. For example, as shown in FIG. 2 and FIG. 3 , the vertical projection of the inner air inlet 51 on the end cover 4 can be an approximate circle. When the outer air inlet 41 is a plurality of through holes formed on the end cover 4, many The through holes and the inner air inlet 51 may be arranged in a staggered arrangement on the vertical projection of the end cover 4 . It should be noted that the shape of the vertical projection of the inner air inlet 51 on the end cover 4 can be various, and the shape of the outer air inlet 41 can also be various, and the present invention is not limited thereto.

Furthermore, after continuous thinking and attempts by the utility model person, the distance between the end cover 4 and the waterproof plate 5 and the distance between the vertical projection and the outer air inlet 41 have a great influence on the waterproof effect of the waterproof structure. As shown in Figures 2 and 6, the end cover 4 and the waterproof plate 5 can be arranged in parallel, and the distance between the end cover 4 and the waterproof plate 5 is H, and the shortest dislocation distance L between the vertical projection and the outer air inlet 41 can satisfy: L≥ 5mm or L≥H, in this way, it can be ensured that the waterproof structure can effectively prevent water from entering the inner air inlet 51 from the outer air inlet 41 during the IPX4 test.

Optionally, in order to make the appearance of the electric water heater more beautiful and prevent more water from entering the end water filter cavity 6 through the outer air inlet 41 , the outer air inlet 41 can be a plurality of through holes formed on the end cover 4 . . In order to further improve the waterproof effect, the diameter of the through holes should not be too large, for example, the diameter of the through holes can be set to be no less than 5 mm. When the outer air inlet 41 is a plurality of through holes formed on the end cover 4, a plurality of decorative blind holes 43 are formed on the outer wall surface of the end cover 4 corresponding to the vertical projection area. The through holes and the decorative blind holes 43 have the same shape and are regularly arranged. As shown in FIG. 2 and FIG. 3 , the cross-sectional shapes of the through holes and the decorative blind holes 43 are both circular and regularly arranged in the transverse and longitudinal directions.

Further, the waterproof structure may further include a drainage hole 44 provided on the end cover 4 and arranged along the cavity bottom of the end water filtering cavity 6 . As shown in FIGS. 3 to 5 , the drainage holes 44 are formed on the end cover 4 and are arranged along the bottom of the end water filtering cavity 6 as a row of circular holes, so that it is convenient to enter the end through the outer air inlet 41 . The water in the water filter chamber 6 can be discharged in time.

Optionally, the diameter of the drainage hole 44 may not be less than 5 mm, so that the drainage can be made smoother. In addition, in order to make the appearance of the electric water heater more beautiful, the drainage holes 44 may have the same appearance as the through holes and the decorative blind holes 43 and are regularly arranged. It should be noted that the shapes of the drainage holes 44 , the through holes and the decorative blind holes 43 can be various, such as rectangle, square or irregular shape, etc., and the arrangement can also be various, and the present invention is not limited thereto.

In some embodiments, the air inner circulation assembly further includes an inner circulation flow channel, and a temperature adjustment device 7 and an inner circulation 8 arranged in the inner circulation flow channel. The temperature adjustment device 7 includes a heating device for increasing the air temperature and/or a Refrigeration units for reducing air temperature. That is, the temperature adjustment device 7 may be one of a heating device and a cooling device, or the temperature adjustment device may include a heating device and a cooling device at the same time. Among them, the heating device is, for example, a PTC heater, which can heat up rapidly, can automatically control the temperature when the fan fails, and has a long service life; the cooling device can be, for example, a chip for cooling, or a cooling device such as a condenser. The following will illustrate some specific embodiments of the electric water heater 100 when the temperature adjustment device is a heating device.

Existing bathrooms are generally dehumidified through moisture absorption components or condensation dehumidification components, and the moisture absorption components remove water vapor in the airflow through adsorption, resulting in low dehumidification efficiency; the cost of condensation and dehumidification components is high. The electric water heater of the present invention can simultaneously combine the air inner circulation component and the air outer circulation component to perform high-efficiency dehumidification, which not only can exert the respective functions of the original functional modules, but also does not need to add other special dehumidification components, that is, only the The new dehumidification function can be realized by combining the original functional modules, the utilization rate of components is greatly improved, and the product cost performance and competitiveness are also stronger. Specifically, the electric water heater of the present invention can heat up the bathroom through the heating device and the internal circulation fan 8 to quickly evaporate the accumulated water in the bathroom and the condensed water on the wall into water vapor, and use the external air circulation component to cool the bathroom inside the bathroom. The high-humidity air is exhausted out of the bathroom, so as to achieve high-efficiency dehumidification and drying function, quickly and effectively improve the bathroom environment, avoid the breeding of bacteria and mold, prevent the generation of peculiar smell, and provide a good user experience.

Among them, after the heating device is energized, it can generate more heat and blow the heat into the bathroom environment through the internal circulation fan 8, wherein the heating device can be, for example, a PTC heater, etc., which can heat up quickly, and can automatically control the temperature when the fan fails. long lasting. Of course, the inner circulation fan 8 may not operate at the same time as the heating device, that is, the inner circulation fan 8 can operate alone. In hot summer, the inner circulation fan 8 can be used as a fan to bring cool air to the bathroom.

Optionally, the electric water heater further includes a control module, which is respectively connected with the inner circulation fan 8, the temperature adjustment device 7 and the outer circulation fan 9, and the air outer circulation assembly also includes an outer circulation flow channel and an outer circulation flow channel arranged in the outer circulation flow channel. Fan 9, when the temperature adjustment device 7 is a heating device, the control module is configured to dry and dehumidify the indoor environment by starting the heating device, the inner circulation fan 8 and the outer circulation fan 9. In addition, the control module can also be configured to control the hot water unit 1 to provide bath water for the user.

Optionally, the electric water heater of the present invention may further include a humidity sensing module for identifying ambient humidity, and the control module is configured to: acquire the ambient humidity sensed by the humidity sensing module; compare the acquired ambient humidity with a preset humidity , and control the operation state of the heating device, the inner circulation fan 8 and the outer circulation fan 9 according to the humidity comparison result.

As shown in FIG. 1 , the electric water heater also includes a hot water unit. The hot water unit usually includes basic functional components such as a heating body 16 for heating the water source, an inner tank 12 , a water inlet pipe 13 , a water outlet pipe 14 and a sewage pipe 15 . In addition, the electric water heater 100 of the present invention may be a double-inner tank water heater, that is, the hot water unit includes two inner tanks 12 , and both inner tanks 12 are provided with a heating body 16 , and one end of the heating body 16 is fixed to the inner tank 12 . On one side, the other end of the heating body 16 extends to the other side of the inner pot 12 .

Specifically, in order to make the structure of the electric water heater more reasonable and compact, and suitable for being accommodated in a narrow bathroom space, as shown in FIG. At one end, the air inner circulation assembly and the air outer circulation assembly are arranged at the other lateral end of the shell cavity 11 , and the end cover 4 closes the lateral side opening of the water heater shell 1 . As shown in FIG. 1 , the indoor air outlet end 31 of the air internal circulation assembly and the outdoor exhaust end 21 of the air external circulation assembly can be arranged on the bottom and the top of the water heater shell 1 respectively, and the indoor first air inlet end 2 and the indoor first air outlet end 21 The second air inlet end 3 can be arranged on the end cover 4 . Of course, in addition to the above-mentioned exemplary embodiments, the arrangement of the hot water unit, the air inner circulation assembly, and the air outer circulation assembly may be in various forms such as vertical arrangement, and the present invention is not limited thereto.

Optionally, the outer air circulation assembly can be arranged above the inner air circulation assembly. In this way, by increasing the height of the outer circulation flow channel, the flow channel through which the indoor air is discharged to the outside is made shorter, and the exhaust efficiency of the outer circulation flow channel is effectively improved. For the air internal circulation channel, due to the need to adjust the air in the internal circulation, for example, the hot air is output from the air outlet of the air internal circulation component below, the mass of the hot air is lighter than that of the cold air, and will naturally The hot air rises from the bottom up, and the migration route of the hot air in the room is longer, which is conducive to adjusting the indoor temperature, and it is also convenient for the hot and humid air to be discharged outdoors more quickly, which is more beneficial to improve the environment in the bathroom.

In addition, since the controller needs to be electrically connected with the heating body 16, the external circulation fan 9, and the internal circulation fan 8, in order to optimize and facilitate wiring control and make the circuit layout more reasonable, the fixed installation end of the heating body 16 is connected to the air external circulation component and/or Or the air recirculation components can be placed adjacent to each other. In addition, arranging the heating body 16 close to one side of the air outer circulation component and the air inner circulation component can not only dissipate heat from the heating body 16 and other heating elements, but also protect the control device.

Optionally, the electric water heater of the present invention may further include any one of functional modules such as an air filter module, a negative ion generating module, and a deodorizing module, or any combination of each functional module. The air filter module may include an air filter module fan and an air filter device arranged upstream or downstream of the air filter module fan, and the negative ion generation module may include a negative ion generation module fan and an anion generation device arranged upstream or downstream of the negative ion generation module fan, The deodorizing module may include a deodorizing module fan and a deodorizing device disposed upstream or downstream of the deodorizing module fan. In order to make the product more miniaturized and the utilization rate of parts is higher, the internal circulation fan 8 can be used as a common function module fan of the negative ion generation module fan, air filter module fan, and deodorization module fan, and the deodorization device of the deodorization module. The air filter device of the filter module can be a common module filter device and is arranged upstream of the internal circulation fan 8 .

Optionally, at least one of the air filtering module, the negative ion generating module and the deodorizing module is detachably arranged in the air internal circulation assembly. Thereby, the effect of improving the bathroom environment can be better achieved, and the product competitiveness of the multifunctional electric water heater is also stronger. For example, the air filter module can realize the functions of air purification and deodorization in the bathroom; the negative ion generation module can improve the air quality in the bathroom, increase the content of negative ions in the air, and improve the problem of suffocation in the bathroom environment; the deodorization module can filter the indoor air Deodorizing can achieve the effect of driving out odors.

To sum up, the utility model provides an electric water heater, which can effectively improve the bathroom environment, has a reasonable and reliable structure, and has a good waterproof effect. In addition, the electric water heater can be used for multiple purposes, which can not only realize the functions of supplying hot water and heating, but also improve the bathroom environment quickly and efficiently, and has a good user experience.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial direction", "circumferential direction", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying the indicated device. Or the elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be mechanical connection, electrical connection or communication with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements , unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features through an intermediary indirect contact. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations of the present invention, and those of ordinary skill in the art are within the scope of the present invention Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (11)

1. An electric water heater, characterized in that the electric water heater comprises: The water heater shell is provided with a shell cavity; an air external circulation assembly for discharging indoor air to the outside or introducing outdoor air into the room, the air external circulation assembly is built in the housing cavity and includes a first indoor air inlet end; and an air internal circulation component for internal circulation of indoor air, the air internal circulation component is built in the shell cavity and includes a second indoor air inlet end; Wherein, the indoor first air inlet end and/or the indoor second air inlet end is provided with a waterproof structure for preventing water from entering the shell cavity. 2. The electric water heater according to claim 1, wherein the waterproof structure comprises: The end cover is used to close the opening of the water heater shell and is provided with an external air inlet; a waterproof plate, located on the inner side of the end cap and provided with an inner air inlet; and The end water filtering cavity is formed between the end cover and the waterproof plate and communicated with the outer air inlet and the inner air inlet respectively. 3 . The electric water heater according to claim 2 , wherein the waterproof structure further comprises a peripheral waterproof wall surrounding the air inlet of the end water filtering cavity. 4 . 4 . The electric water heater according to claim 3 , wherein the peripheral waterproof wall of the air inlet comprises a first waterproof peripheral wall connected to the inner wall of the end cover and a waterproof peripheral wall connected to the outer wall of the waterproof plate. 5 . A second waterproof peripheral wall, one between the first waterproof peripheral wall and the second waterproof peripheral wall is formed with an annular insertion groove, and the other is formed as an annular insertion wall. 5 . The electric water heater according to claim 3 , wherein the vertical projection of the inner air inlet on the end cover is staggered from the outer air inlet. 6 . 6 . The electric water heater according to claim 5 , wherein the end cover and the waterproof plate are arranged in parallel, and the distance between the end cover and the waterproof plate is H, and the vertical projection and the The shortest dislocation distance L of the outside air inlet shall satisfy: L≥5mm or L≥H. 7 . The electric water heater according to claim 5 , wherein the outer air inlet is a plurality of through holes formed on the end cover, and the area of the end cover corresponding to the area of the vertical projection A plurality of decorative blind holes are formed on the outer wall surface, and the through holes have the same shape as the decorative blind holes. 8 . The electric water heater according to claim 3 , wherein the waterproof structure further comprises a drainage hole provided on the end cover and arranged along the cavity bottom of the end water filtering cavity. 9 . 9 . The electric water heater according to claim 8 , wherein the diameter of the drainage hole is not less than 5 mm. 10 . 10. The electric water heater according to any one of claims 1 to 9, wherein the air inner circulation assembly further comprises an inner circulation flow channel and a temperature adjustment device and an inner circulation channel arranged in the inner circulation flow channel A fan, the temperature adjustment device includes a heating device for raising the air temperature and/or a cooling device for lowering the air temperature. 11 . The electric water heater according to claim 10 , wherein the electric water heater further comprises a control module, and the air outer circulation assembly further comprises an outer circulation flow channel and an outer circulation fan arranged in the outer circulation flow channel. 12 . , the control module is respectively connected with the inner circulation fan, the temperature adjustment device and the outer circulation fan, and the control module is configured to activate the temperature adjustment device, the inner circulation fan and the outer circulation fan. The circulating fan dries and dehumidifies the indoor environment.

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