Electric water heater

Abstract

The electric water heater comprises a shell, a water tank, an electric device, a first water outlet pipe, a first water inlet pipe and a heat exchange assembly. The electric device is installed in the first space, the first space is composed of the outer top of the water tank and the inner top of the shell, and the water tank is placed in the shell; the water inlet end of the first water inlet pipe is connected with the electric device in the first space, and the water outlet end of the first water inlet pipe extends into the water tank from the first space to be connected with the water inlet end of the heat exchange assembly. The water inlet end of the first water outlet pipe is connected with the water outlet end of the heat exchange assembly, and the water outlet end of the first water outlet pipe extends into the first space from the water tank to be connected with the electric device. Compared with the prior art, according to the technical scheme, the electric device is installed in the first space formed by the outer top of the water tank and the inner top of the shell, and the safety performance of the electric water heater can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric water heaters, and in particular to an electric water heater. Background Art

[0002] In the design of traditional electric water heaters, the water tank is generally placed in the top area of ​​the water heater, and the electrical components are placed at the bottom of the water heater. The faucet connection point of the traditional electric water heater is usually located at the bottom of the water tank. This design makes the sealing structure of the faucet connection point prone to failure under the influence of water pressure and temperature changes for a long time.

[0003] Once the sealing structure fails, the water in the water tank will leak out from the leaking point. When the water tank leaks, since the water nozzle connection point is at the bottom, the leaked water will directly soak the electrical components at the bottom of the electric water heater. This soaking can easily cause a short circuit in the electrical components, which may lead to serious safety accidents such as electric shock, posing a threat to the user's personal safety. Summary of the invention

[0004] The present application provides an electric water heater, which can improve the safety performance of the electric water heater by installing electrical components in a first space formed by an outer top of the water tank and an inner top of the shell.

[0005] In a first aspect, the present application provides an electric water heater, comprising: a housing, a water tank, an electrical component, a first water outlet pipe, a first water inlet pipe and a heat exchange assembly;

[0006] The electrical device is installed in a first space, wherein the first space is formed by the outer top of the water tank and the inner top of the shell, and the water tank is placed inside the shell;

[0007] The water inlet end of the first water inlet pipe is connected to the electrical device in the first space, and the water outlet end of the first water inlet pipe extends from the first space into the water tank and is connected to the water inlet end of the heat exchange component;

[0008] The water inlet end of the first water outlet pipe is connected to the water outlet end of the heat exchange component, and the water outlet end of the first water outlet pipe extends from the water tank to the first space and is connected to the electrical device.

[0009] The present application provides an electric water heater, further comprising: a water outlet and a water inlet;

[0010] Wherein, the water outlet and the water inlet are arranged on the top of the shell.

[0011] In a possible implementation, the electrical device includes a main control system, a second heater and a thermostatic valve;

[0012] Wherein, the thermostatic valve comprises a control end, a first water inlet pipe end, a first water outlet pipe end, a water inlet end and a heating end;

[0013] The water inlet is connected to the thermostatic valve based on the water inlet end, and the thermostatic valve is connected to the water inlet end of the first water inlet pipe based on the first water inlet pipe end;

[0014] The water outlet end of the first water outlet pipe is connected to the thermostatic valve based on the first water outlet pipe end, the thermostatic valve is connected to the water inlet end of the second heater based on the heating end, and the water outlet end of the second heater is connected to the water outlet.

[0015] The electric water heater provided by the present application further includes: a second water inlet pipe;

[0016] The thermostatic valve also includes a second water inlet pipe end;

[0017] The second water inlet pipe end is connected to the water inlet end of the second water inlet pipe, and the water outlet end of the second water inlet pipe extends from the first space into the water tank.

[0018] In a possible implementation, the water tank includes a water tank side wall, a water tank upper cover and a water tank lower cover;

[0019] Wherein, the side wall of the water tank is connected based on the weld at the first side wall surface of the water tank;

[0020] The water tank upper cover is located above the water tank side wall, and the water tank upper cover is connected to the water tank side wall by welding;

[0021] The water tank lower cover is located below the water tank side wall, and the water tank lower cover is connected to the water tank side wall by welding.

[0022] The present application provides an electric water heater, further comprising: a liquid level sensor and a first heater;

[0023] The liquid level sensor is mounted on the housing corresponding to the second side wall of the water tank, and the first heater is mounted on the second side wall of the water tank;

[0024] The second side wall surface is a vertical surface facing the first side wall.

[0025] In a possible implementation, the liquid level sensor is used to detect the water level of the water tank;

[0026] Set the liquid level sensor high position and liquid level sensor low position;

[0027] When the water level of the water tank is lower than the low position of the liquid level sensor, the water tank is replenished with water until it is detected that the water level of the water tank reaches the high position of the liquid level sensor, and then the replenishment of water to the water tank is stopped.

[0028] The present application provides an electric water heater, further comprising: a duckbill valve and a second water outlet pipe;

[0029] The duckbill valve is arranged below the shell, the water inlet end of the second water outlet pipe is arranged in the water tank, and the water outlet end of the second water outlet pipe passes through the water tank and the shell to be connected with the duckbill valve.

[0030] In a possible implementation, the water inlet end of the second water outlet pipe is arranged at a height not less than the high position of the liquid level sensor;

[0031] When the water level of the water tank is higher than the set height, the water tank is drained based on the duckbill valve and the second water outlet pipe.

[0032] In a possible implementation, a first thermal insulation layer is provided on the side wall and the bottom of the water tank, and a second thermal insulation layer is provided on the top of the water tank;

[0033] Wherein, the first surface of the first thermal insulation layer is closely fitted to the side wall of the water tank and the bottom of the water tank respectively, and the second surface of the first thermal insulation layer is closely fitted to the outer shell;

[0034] A second thermal insulation layer is arranged on the top of the water tank, the first surfaces of the second thermal insulation layer are respectively tightly fitted with the top of the water tank, and the second surface of the second thermal insulation layer constitutes the bottom of the first space.

[0035] The present invention provides an electric water heater, which has the following advantages compared with the prior art:

[0036] The electrical components are installed in the first space formed by the outer top of the water tank and the inner top of the outer shell, away from the bottom of the water tank. This can prevent the electrical components from being soaked by water when the water tank leaks, thereby reducing the risk of short circuit and electric shock; and the water inlet and outlet ends of the heat exchange component are respectively connected to the first water inlet pipe and the first water outlet pipe, so that water can flow directly from the electrical components to the heat exchange component, and then flow back to the electrical components from the heat exchange component. Such a circulation design simplifies the pipeline, reduces the connection points, and thus reduces the risk of leakage. Compared with the prior art, the safety of the electric water heater is improved by optimizing the layout of electrical components and pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0039] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0040] Figure 1 It is a structural schematic diagram of an embodiment of an electric water heater provided by the present application;

[0041] Figure 2 It is another structural schematic diagram of an embodiment of an electric water heater provided by the present application;

[0042] Figure 3 It is a structural schematic diagram of a water tank provided by the present application;

[0043] Figure 4 It is a schematic diagram of the position of a water tank weld provided in this application. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0046] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0047] Example 1, see Figure 1 , Figure 1 It is a structural schematic diagram of an electric water heater provided by the present application, such as Figure 1 As shown, the electric water heater includes a shell 1, a water tank 2, an electrical component 3, a first water outlet pipe 4, a first water inlet pipe 5 and a heat exchange component 6.

[0048] In one embodiment, the electrical device 3 is installed in a first space, wherein the first space is formed by an outer top of the water tank 2 and an inner top of the housing 1 .

[0049] In one embodiment, the water tank 2 is placed inside the housing 1 .

[0050] In one embodiment, a first thermal insulation layer 14 is disposed on the water tank side wall 21 and the water tank bottom of the water tank 2 , and a second thermal insulation layer 15 is disposed on the water tank top of the water tank 2 .

[0051] Specifically, the first surface of the first thermal insulation layer 14 is tightly fitted to the water tank side wall 21 and the bottom of the water tank respectively, and the second surface of the first thermal insulation layer 14 is tightly fitted to the outer shell 1 .

[0052] Specifically, a second insulation layer 15 is provided on the top of the water tank 2, and the first surfaces of the second insulation layer 15 are tightly fitted with the top of the water tank, and the second surface of the second insulation layer 15 constitutes the bottom of the first space.

[0053] Specifically, the first thermal insulation layer 14 and the second thermal insulation layer 15 completely surround the water tank 2 .

[0054] Specifically, the shell height of the shell 1 is greater than the water tank height of the water tank 2, and the space height of the first space is determined based on the height difference between the shell height and the water tank height.

[0055] Preferably, the height of the space is greater than the height of the electrical device 3 , so that the electrical device 3 can be successfully installed in the first space.

[0056] like Figure 2 As shown, Figure 2 This is another structural schematic diagram of an electric water heater provided by the present application.

[0057] An electric water heater provided in an embodiment of the present application also includes: a water outlet 7 and a water inlet 8; wherein, the water outlet 7 and the water inlet 8 are arranged at the top of the shell 1, which is different from the traditional electric water heater in that the water outlet 7 and the water inlet 8 of the water tank 2 are arranged at the bottom of the water tank, which can reduce the risk of water leakage.

[0058] Specifically, the water outlet 7 and the water inlet 8 are used to connect the first space with the outside.

[0059] In one embodiment, the electrical device 3 includes a main control system 31 , a second heater 32 and a thermostatic valve 33 .

[0060] Specifically, the thermostatic valve 33 includes a control end, a first water inlet pipe 5 end, a first water outlet pipe 4 end, a water inlet end and a heating end.

[0061] Specifically, the main control system 31 is connected to the control end of the thermostatic valve 33 .

[0062] In one embodiment, the water inlet 8 is connected to the thermostatic valve 33 based on the water inlet end, and the thermostatic valve 33 is connected to the water inlet end of the first water inlet pipe 5 based on the end of the first water inlet pipe 5 .

[0063] Specifically, based on the connection relationship between the water inlet 8 , the thermostatic valve 33 and the first water inlet pipe 5 , the external water flow is made to flow from the water inlet 8 into the thermostatic valve 33 , and then into the first water inlet pipe 5 based on the thermostatic valve 33 .

[0064] In one embodiment, the water outlet end of the first water outlet pipe 4 is connected to the thermostatic valve 33 based on the end of the first water outlet pipe 4, the thermostatic valve 33 is connected to the water inlet end of the second heater 32 based on the heating end, and the water outlet end of the second heater 32 is connected to the water outlet 7.

[0065] Specifically, based on the connection relationship between the water outlet 7, the thermostatic valve 33, the second heater 32 and the first water outlet pipe 4, the internal water flow is made to flow from the first water outlet pipe 4 into the thermostatic valve 33, and is secondary heated when flowing into the second heater 32 based on the thermostatic valve 33, and the heated internal water flow flows to the water outlet 7.

[0066] In one embodiment, the water inlet end of the first water inlet pipe 5 is connected to the electrical device 3 in the first space, and the water outlet end of the first water inlet pipe 5 extends from the first space into the water tank 2 and is connected to the water inlet end of the heat exchange component 6 .

[0067] Specifically, the heat exchange component 6 is arranged inside the water tank.

[0068] Specifically, when the water inlet end of the first water inlet pipe 5 is connected to the electrical component 3 in the first space, the electrical component 3 is a thermostatic valve 33 .

[0069] Specifically, based on the connection relationship between the first water inlet pipe 5 and the heat exchange component 6, the external water flow is made to flow into the heat exchange component 6 through the first water inlet pipe 5 for heating treatment.

[0070] In one embodiment, the water inlet end of the first water outlet pipe 4 is connected to the water outlet end of the heat exchange component 6 , and the water outlet end of the first water outlet pipe 4 extends from the water tank 2 to the first space and is connected to the electrical device 3 .

[0071] Specifically, when the water outlet end of the first water outlet pipe 4 extends from the water tank 2 into the first space and is connected to the electrical component 3 , the electrical component 3 is a thermostatic valve 33 .

[0072] Specifically, based on the connection relationship between the first water outlet pipe 4 and the heat exchange component 6 , the water heated in the heat exchange component 6 flows into the thermostatic valve 33 through the first water outlet pipe 4 .

[0073] In this embodiment, by installing the electrical device 3 in the first space, only the water inlet 8 and the water outlet 7 are left connected to the outside, so as to realize an integrated design. Compared with the traditional electric water heater, there is no external thermostatic valve 33, control box and other components, and the appearance is high.

[0074] In one embodiment, the water tank 2 includes a water tank side wall 21, a water tank upper cover 22 and a water tank lower cover 23; Figure 3 As shown, Figure 3 It is a schematic diagram of a water tank structure provided by this application.

[0075] Specifically, the water tank 2 is an open water tank 2.

[0076] In one embodiment, the water tank side wall 21 is connected based on a weld at a first side wall surface of the water tank 2 .

[0077] In one embodiment, the water tank upper cover 22 is located above the water tank side wall 21, and the water tank upper cover 22 and the water tank side wall 21 are connected by welding.

[0078] In one embodiment, the water tank lower cover 23 is located below the water tank side wall 21 , and the water tank lower cover 23 is connected to the water tank side wall 21 by welding.

[0079] In one embodiment, since the water tank side wall 21, the water tank upper cover 22 and the water tank lower cover 23 are welded to form the water tank 2, there is a first weld 24 between the water tank upper cover 22 and the water tank side wall 21, there is a second weld 25 at the first side wall surface of the water tank 2, and there is a third weld 26 between the water tank lower cover 23 and the water tank side wall 21. Figure 4 As shown, Figure 4 It is a schematic diagram of the position of a water tank weld provided in this application.

[0080] An electric water heater provided in an embodiment of the present application further includes: a liquid level sensor 10 and a first heater 11 .

[0081] In one embodiment, the liquid level sensor 10 is mounted on the housing 1 corresponding to the second side wall surface of the water tank 2, and the first heater 11 is mounted on the second side wall surface of the water tank 2;

[0082] In one embodiment, the second side wall surface is a vertical surface facing the first side wall.

[0083] In this embodiment, based on the fact that the weld is a part of the water tank 2 that is relatively prone to rust and corrosion, the electrical component 3 is located in the first space on the outer top of the water tank 2, the liquid level sensor 10 and the first heater 11 are located on the side of the water tank 2, and the installation position avoids the weld on the water tank 2, that is, the main controller, the second heater 32, and the thermostatic valve 33 are located on the outer top of the water tank 2; the liquid level sensor 10 and the first heater 11 are located on the right side of the water tank 2; the advantage of such a design is that when the weld on the water tank 2 corrodes and causes the water tank 2 to leak, the leaked water will not splash onto the electrical component 3, and there is no risk of electric shock caused by a short circuit of the electrical component 3.

[0084] In one embodiment, in addition to water, the water tank 2 can also be loaded with other liquids with a certain specific heat capacity, or phase change materials, etc., which can be selected based on user needs.

[0085] In one embodiment, the first heater 11 is used to heat the water in the water tank 2 .

[0086] The working principle of the electric water heater in this embodiment is as follows: the water inside the water tank is heated to a certain temperature by the first heater 11 and then kept warm. When the user needs to take hot water, cold water enters from the water inlet 8 and flows into the heat exchange component 6 through the thermostatic valve 33 and the first water inlet pipe 5. During the flow in the heat exchange component 6, it absorbs the heat of the water in the water tank 2 and then heats up. After leaving the heat exchange component 6, it enters the thermostatic valve 33 through the first water outlet pipe 4. After being mixed with a certain proportion of cold water at the thermostatic valve 33, it becomes hot water at a certain temperature. Then it reaches the second heater 32 for secondary heating to become hot water of the temperature set by the user, and then flows out from the water outlet 7.

[0087] Since the water in the water tank is stagnant water, the user uses fresh water flowing through the heat exchange assembly 6. Therefore, the mineral content of the water in the water tank is certain, and compared with the traditional storage type electric water heater, the scaling speed will be greatly reduced, and the risk of water tank corrosion and water leakage caused by scaling will also be greatly reduced accordingly.

[0088] In one embodiment, the liquid level sensor 10 is used to detect the water level of the water tank 2 .

[0089] Specifically, a high position of the liquid level sensor 10 and a low position of the liquid level sensor 10 are set; when the water level in the water tank is lower than the low position of the liquid level sensor 10, the water tank 2 is replenished with water until it is detected that the water level in the water tank reaches the high position of the liquid level sensor 10, and then the replenishment of water to the water tank 2 is stopped.

[0090] A water heater provided in an embodiment of the present application further includes: a second water inlet pipe 9.

[0091] In one embodiment, the thermostatic valve 33 also includes a second water inlet pipe 9 end; the second water inlet pipe 9 end is connected to the water inlet end of the second water inlet pipe 9, and the water outlet end of the second water inlet pipe 9 extends from the first space into the water tank 2.

[0092] In one embodiment, when the water level of the water tank is lower than the low position of the liquid level sensor 10, when the water tank 2 is replenished with water, the second water inlet pipe 9 end is opened by controlling the thermostatic valve 33 so that the external water flow that flows into the thermostatic valve 33 through the water inlet 8 flows into the water tank 2 based on the second water inlet pipe 9, so as to replenish the water tank 2.

[0093] In one embodiment, when it is detected that the water level of the water tank reaches the high position of the liquid level sensor 10, based on the thermostatic valve 33, the end of the second water inlet pipe 9 is controlled to be closed to stop replenishing water to the water tank 2.

[0094] Because the liquid level sensor 10, when it fails, may not be able to accurately detect the water level height of the water tank 2, resulting in the water tank being filled with water, causing water 2 to be pressurized, which may easily cause the water tank to leak; based on this, a water heater provided in an embodiment of the present application also includes: a duckbill valve 12 and a second water outlet pipe 13.

[0095] In one embodiment, the duckbill valve 12 is arranged below the outer shell 1 , the water inlet end of the second water outlet pipe 13 is arranged in the water tank 2 , and the water outlet end of the second water outlet pipe 13 passes through the water tank 2 and the outer shell 1 to be connected with the duckbill valve 12 .

[0096] In one embodiment, the water inlet end of the second water outlet pipe 13 is disposed at a height not less than a high position of the liquid level sensor 10 .

[0097] In one embodiment, the internal water loaded in the water tank 2 does not fill the entire water tank 2, and a second space is formed between the top of the internal water and the top of the water tank 2 based on air.

[0098] Specifically, the water inlet end of the second water outlet pipe 13 is located in the second space.

[0099] In one embodiment, when the water level of the water tank is higher than the set height, the water tank 2 is drained based on the duckbill valve 12 and the second water outlet pipe 13 .

[0100] Specifically, when the liquid level sensor 10 fails, the water level in the water tank 2 rises to a certain level and then flows out of the water tank 2 through the second water pipe and the duckbill valve 12, thereby reducing the risk of pressure buildup and water leakage in the water tank 2.

[0101] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0102] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0103] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0104] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0105] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0107] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0108] The above is a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electric water heater, characterized in that: include: A housing, a water tank, an electrical component, a first water outlet pipe, a first water inlet pipe and a heat exchange assembly; The electrical device is installed in a first space, wherein the first space is formed by the outer top of the water tank and the inner top of the shell, and the water tank is placed inside the shell; The water inlet end of the first water inlet pipe is connected to the electrical device in the first space, and the water outlet end of the first water inlet pipe extends from the first space into the water tank and is connected to the water inlet end of the heat exchange component; The water inlet end of the first water outlet pipe is connected to the water outlet end of the heat exchange component, and the water outlet end of the first water outlet pipe extends from the water tank to the first space and is connected to the electrical device.

2. The electric water heater according to claim 1, characterized in that: Also includes: Water outlet and water inlet; Wherein, the water outlet and the water inlet are arranged on the top of the shell.

3. The electric water heater according to claim 2, characterized in that: The electrical components include a main control system, a second heater and a thermostatic valve; Wherein, the thermostatic valve comprises a control end, a first water inlet pipe end, a first water outlet pipe end, a water inlet end and a heating end; The water inlet is connected to the thermostatic valve based on the water inlet end, and the thermostatic valve is connected to the water inlet end of the first water inlet pipe based on the first water inlet pipe end; The water outlet end of the first water outlet pipe is connected to the thermostatic valve based on the first water outlet pipe end, the thermostatic valve is connected to the water inlet end of the second heater based on the heating end, and the water outlet end of the second heater is connected to the water outlet.

4. The electric water heater according to claim 3, characterized in that: Also includes: Second water inlet pipe; The thermostatic valve also includes a second water inlet pipe end; The second water inlet pipe end is connected to the water inlet end of the second water inlet pipe, and the water outlet end of the second water inlet pipe extends from the first space into the water tank.

5. The electric water heater according to claim 1, characterized in that: The water tank comprises a water tank side wall, a water tank upper cover and a water tank lower cover; Wherein, the side wall of the water tank is connected based on the weld at the first side wall surface of the water tank; The water tank upper cover is located above the water tank side wall, and the water tank upper cover is connected to the water tank side wall by welding; The water tank lower cover is located below the water tank side wall, and the water tank lower cover is connected to the water tank side wall by welding.

6. The electric water heater according to claim 5, characterized in that: Also includes: a liquid level sensor and a first heater; The liquid level sensor is mounted on the housing corresponding to the second side wall of the water tank, and the first heater is mounted on the second side wall of the water tank; The second side wall surface is a vertical surface facing the first side wall.

7. The electric water heater according to claim 6, characterized in that: The liquid level sensor is used to detect the water level of the water tank; Set the liquid level sensor high position and liquid level sensor low position; When the water level of the water tank is lower than the low position of the liquid level sensor, the water tank is replenished with water until it is detected that the water level of the water tank reaches the high position of the liquid level sensor, and then the replenishment of water to the water tank is stopped.

8. The electric water heater according to claim 7, characterized in that: Also includes: duckbill valve and second outlet pipe; The duckbill valve is arranged below the shell, the water inlet end of the second water outlet pipe is arranged in the water tank, and the water outlet end of the second water outlet pipe passes through the water tank and the shell to be connected with the duckbill valve.

9. The electric water heater according to claim 8, characterized in that: The setting height of the water inlet end of the second water outlet pipe is not less than the high position of the liquid level sensor; When the water level of the water tank is higher than the set height, the water tank is drained based on the duckbill valve and the second water outlet pipe.

10. The electric water heater according to claim 1, characterized in that: The water tank side wall and the water tank bottom of the water tank are provided with a first insulation layer, and the water tank top of the water tank is provided with a second insulation layer; Wherein, the first surface of the first thermal insulation layer is closely fitted to the side wall of the water tank and the bottom of the water tank respectively, and the second surface of the first thermal insulation layer is closely fitted to the outer shell; A second thermal insulation layer is arranged on the top of the water tank, the first surfaces of the second thermal insulation layer are respectively tightly fitted with the top of the water tank, and the second surface of the second thermal insulation layer constitutes the bottom of the first space.

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