A water heater

Abstract

This utility model belongs to the field of household appliance technology and discloses a water heater. The water heater includes a shell, an inner tank assembly, a thermostatic valve, and a control assembly. An electrical compartment is formed inside the shell. The inner tank assembly is disposed within the shell, and the electrical compartment is located at one axial end of the inner tank assembly. The inner tank assembly includes at least two inner tanks arranged vertically and connected in series. The thermostatic valve is disposed within the electrical compartment and includes a first inlet, a second inlet, and a mixing outlet. The first inlet is used to introduce cold water, and the second inlet is connected to the outlet end of the inner tank assembly. The control assembly is disposed within the electrical compartment and is electrically connected to the thermostatic valve for controlling the thermostatic valve. The thermostatic valve is disposed within the electrical compartment, and noise reduction is achieved by utilizing the shell. The space within the electrical compartment is fully utilized, eliminating the need for an external protruding structure to install the thermostatic valve. This results in a more streamlined overall design and facilitates wall-mounted installation of the water heater.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a water heater. Background Technology

[0002] Traditional storage-type electric water heaters typically rely on mechanical mixing valves to regulate the water temperature. These valves are located outside the water heater and require manual adjustment by the user. This makes it impossible to accurately control the water temperature; users can only roughly determine the suitable water temperature for bathing based on the actual water temperature. Furthermore, as the water heater continues to output water, users need to frequently adjust the valves to avoid large fluctuations in the water temperature, resulting in a poor user experience.

[0003] In recent years, the industry has seen the emergence of electronic thermostatic valves to replace mechanical mixing valves. However, electronic mixing valves require a motor to adjust the mixing ratio, resulting in significant noise. Furthermore, both mechanical and electronic thermostatic valves are externally mounted, failing to achieve a seamless integration with the water heater and negatively impacting the user experience. Utility Model Content

[0004] The purpose of this utility model is to provide a water heater that can solve the problem of loud noise from the thermostatic valve, which affects the installation effect.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A water heater, comprising:

[0007] An outer casing, within which an electrical compartment is formed;

[0008] An inner liner assembly is disposed within the outer shell, and the electrical compartment is located at one axial end of the inner liner assembly. The inner liner assembly includes at least two inner liners arranged vertically and connected in series.

[0009] A thermostatic valve is installed in the electrical compartment. The thermostatic valve includes a first inlet, a second inlet, and a mixing outlet. The first inlet is used to introduce cold water, and the second inlet is connected to the outlet of the inner tank assembly.

[0010] A control component is disposed in the electrical compartment and is electrically connected to the thermostatic valve for controlling the thermostatic valve.

[0011] As an optional solution for the aforementioned water heater, the thermostatic valve is provided with a valve cover.

[0012] As an optional solution for the above-mentioned water heater, a sound insulation layer is provided inside the valve cover, and the sound insulation layer is in contact with or spaced from the thermostatic valve.

[0013] And / or, the valve cover is made of sound-insulating material.

[0014] As an optional solution for the above-mentioned water heater, the thermostatic valve is fixed to the inner wall of the electrical compartment, and a shock-absorbing component is provided between the thermostatic valve and the inner wall of the electrical compartment;

[0015] Alternatively, a valve mounting base may be provided in the electrical compartment, the thermostatic valve may be fixed to the valve mounting base, and a shock-absorbing component may be provided between the thermostatic valve and the valve mounting base.

[0016] As an alternative to the above-mentioned water heater, the water heater further includes a temperature detection element, the detection end of which is disposed in the mixing outlet, and the temperature detection element is electrically connected to the control component.

[0017] As an alternative to the above-mentioned water heater, the electrical compartment is provided with at least two mounting ports communicating with the inner tank compartment, one end of the inner tank is fixed to the mounting port, and the thermostatic valve is located between any two adjacent mounting ports.

[0018] As an alternative to the aforementioned water heater, the thermostatic valve is positioned at an angle to the line connecting the axes of the two adjacent inner tanks along its length in the plane where the installation port is located.

[0019] As an alternative to the aforementioned water heater, the control component is located on one side of the inner tank assembly along the front-to-back direction and is positioned opposite to the thermostatic valve.

[0020] As an alternative to the aforementioned water heater, the water heater further includes:

[0021] A connecting pipe is provided in the electrical compartment to connect two adjacent inner liner sections;

[0022] A hot water pipe is installed in the electrical compartment, and the hot water pipe connects the inner tank assembly and the second water inlet.

[0023] As an alternative to the above-mentioned water heater, the length of the hot water pipe is less than the length of the connecting pipe;

[0024] And / or, the hot water pipe and the connecting pipe are arranged along the axial direction of the inner tank, with the hot water pipe located between the connecting pipe and the inner tank;

[0025] And / or, the second inlet is located between two adjacent inner tanks.

[0026] As an alternative to the above-mentioned water heater, a recessed area is provided at the bottom of the back of the outer casing, and a first pipe interface and a second pipe interface communicating with the electrical compartment are provided in the recessed area.

[0027] The water heater also includes an inlet pipe and an outlet pipe located in the recessed area. The inlet pipe is connected to the first inlet and the inner tank assembly through the first pipe interface, and the outlet pipe is connected to the mixing outlet through the second pipe interface.

[0028] As an alternative to the aforementioned water heater, the water heater further includes:

[0029] A first shunt pipe, the first shunt pipe connecting the first pipe interface and the inner liner assembly;

[0030] The second diversion pipe connects the first diversion pipe and the first inlet.

[0031] As an alternative to the aforementioned water heater, the water heater further includes a concealed cover connected to the back of the outer casing. The concealed cover is used to cover the inlet pipe and the outlet pipe from the bottom and the left and right sides.

[0032] The beneficial effects of this utility model are:

[0033] In the water heater provided by this utility model, the thermostatic valve is located inside the outer casing, utilizing the casing for sound insulation. Compared to placing the thermostatic valve externally, this reduces noise during operation. Furthermore, installing the thermostatic valve within the electrical compartment fully utilizes the space inside, eliminating the need for an external protrusion to accommodate it. This minimizes the impact on the overall size and design of the unit, allowing for a more streamlined appearance and enhancing product competitiveness. The thermostatic valve's placement within the electrical compartment also avoids occupying external space, facilitating wall-mounted installation and reducing gaps between the water heater and the wall, thus improving the final installation effect. The fact that both the thermostatic valve and control components are located within the electrical compartment simplifies circuit connections and allows for more timely and accurate control of the water temperature at the thermostatic valve's mixing outlet. Attached Figure Description

[0034] Figure 1 This is a first structural schematic diagram of the water heater provided by this utility model;

[0035] Figure 2 This is a schematic diagram of the second structure of the water heater provided by this utility model;

[0036] Figure 3 This is a cross-sectional view of the water heater provided by this utility model;

[0037] Figure 4 This is a structural diagram of the water heater provided by this utility model without the outer casing cover;

[0038] Figure 5 This is a structural diagram of the water heater provided by this utility model without the outer shell cover and the rear cover installed;

[0039] Figure 6 yes Figure 5 A magnified view of a section at point A in the middle;

[0040] Figure 7 This is a first sectional view of the water heater provided by this utility model;

[0041] Figure 8 This is a schematic diagram of the structure of the concealed cover provided by this utility model;

[0042] Figure 9 This is a schematic diagram of the third structure of the water heater provided by this utility model;

[0043] Figure 10 yes Figure 9 A magnified view of a section at point B in the middle.

[0044] In the picture:

[0045] 10. Outer shell; 101. Inner chamber; 102. Electrical compartment; 11. Outer shell body; 111. Front shell; 112. Rear shell; 1121. Recessed area; 1122. Mounting groove; 11221. First groove segment; 11222. Second groove segment; 1123. Second snap-fit ​​part; 1124. Second limiting part; 1125. Fourth snap-fit ​​part; 12. Outer shell cover; 13. Partition plate; 131. Fixing post; 20. Inner chamber assembly; 21. First inner chamber; 22. Second inner chamber; 23. Clamp; 24. Support component; 241. Weight reduction hole; 31. Valve cover; 32. Thermostatic valve; 32 1. Install ear plate; 33. Shock absorber; 331. End; 332. Neck; 41. Inlet pipe; 42. Outlet pipe; 431. First branch pipe; 432. Second branch pipe; 44. Connecting pipe; 45. Hot water pipe; 46. Warm water pipe; 50. Concealed cover; 51. Concealed base plate; 511. First snap-fit ​​part; 512. First pipe connection port; 513. First limiting part; 52. Concealed side plate; 521. Second pipe connection port; 522. Third snap-fit ​​part; 60. Control component; 70. Temperature detection component; 80. Hanging component; 81. Hanging base; 82. Hanging piece. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] like Figures 1-3 As shown, this embodiment provides a water heater, including a shell 10, an inner tank assembly 20 disposed within the shell 10, and a heating component (not shown in the figure) disposed within the inner tank assembly 20. The inner tank assembly 20 is used to hold water, and the heating component is used to heat the water in the inner tank assembly 20 for use.

[0051] The inner liner assembly 20 includes at least two inner liners connected in series, each containing a heating element. This provides rapid heating and a large capacity, better meeting user needs. The inner liners in the inner liner assembly 20 are arranged vertically, forming a horizontal layout. This design, while increasing capacity, allows for a narrower depth in the front-to-back direction, resulting in a thinner overall appearance. This allows the unit to fit better against the wall, reducing any sense of confinement and enhancing product competitiveness.

[0052] like Figure 2As shown, the water heater also includes an inlet pipe 41 and an outlet pipe 42. The inlet pipe 41 is connected to the inner tank at the inlet end of the inner tank assembly 20 and is used to replenish cold water into the inner tank. The outlet pipe 42 is connected to the inner tank at the outlet end of the inner tank assembly 20 and is used to discharge the heated water in the inner tank for user use.

[0053] In some embodiments, among all the inner tanks arranged vertically, the bottom inner tank is connected to the water inlet pipe 41, and the top inner tank is connected to the water outlet pipe 42. Cold water enters from the bottom of the inner tank assembly 20, and taking advantage of the upward floating property of hot water, the heated water flows out from the top of the inner tank assembly 20, making full use of the convection between hot and cold water, improving heat generation efficiency, avoiding heat loss, and ensuring the outlet water temperature.

[0054] To facilitate control of the outlet water temperature, combined with Figure 3 and Figure 4 As shown, the water heater also includes a thermostatic valve 32 and a control component 60. The thermostatic valve 32 includes a first inlet, a second inlet, and a mixing outlet. The first inlet is connected to the inlet pipe 41 for introducing cold water. The second inlet is connected to the outlet end of the inner tank component 20. The mixing outlet is connected to the outlet pipe 42. The thermostatic valve 32 is electrically connected to the control component 60 so that the control component 60 can control the thermostatic valve 32 to adjust the water temperature at the mixing outlet, thereby adjusting the bathing water temperature.

[0055] The thermostatic valve 32 includes a valve body, a valve core disposed in the valve body, and a driving component for driving the valve core to move. The driving component adjusts the opening degree of the first water inlet and the second water inlet by driving the valve core to move, thereby adjusting the ratio of cold water and hot water, and thus realizing the adjustment of the water temperature at the mixing outlet.

[0056] It should be noted that the thermostatic valve 32 is existing technology in this field. This utility model can adopt any thermostatic valve 32 with any existing structure and principle, as long as it can achieve the adjustment of the water temperature in the mixing outlet.

[0057] The thermostatic valve 32 requires a driving component to regulate the outlet water temperature, thus generating vibration and noise during operation. To avoid the problems of excessive noise and negative impact on the overall aesthetics of an externally mounted thermostatic valve 32, some embodiments incorporate... Figure 3 and Figure 4As shown, the outer casing 10 forms an inner tank chamber 101 and an electrical compartment 102 arranged horizontally within it. The inner tank assembly 20 is disposed within the inner tank chamber 101, while the thermostatic valve 32 and control assembly 60 are disposed within the electrical compartment 102. This arrangement, on the one hand, places the thermostatic valve 32 inside the outer casing 10, utilizing the casing 10 to achieve a sound insulation effect, which reduces the noise of the thermostatic valve 32 during operation compared to placing it directly outside. On the other hand, using the electrical compartment 102 to install the thermostatic valve 32 makes full use of the space within the electrical compartment 102, eliminating the need for an external protruding structure to install the thermostatic valve 32. This does not significantly affect the overall size and shape of the unit, allowing for a more regular overall design and improving product competitiveness. Furthermore, the thermostatic valve 32's placement within the electrical compartment 102 does not occupy external space of the outer casing 10, facilitating wall-mounted installation of the water heater and reducing the gap between the water heater and the wall after installation, thus improving the final installation effect.

[0058] In addition, the thermostatic valve 32 and the control component 60 are both located in the electrical compartment 102. The reduced distance between them simplifies the circuit connection and improves the response speed of the control component 60 to the adjustment of the thermostatic valve 32, thereby improving the accuracy of water temperature control.

[0059] It should be noted that the inner liner chamber 101 is only used to illustrate the installation position of the inner liner assembly 20. The inner wall of the inner liner chamber 101 and the inner liner assembly 20 are filled with a foam layer. The foam layer is formed by foaming foam material and will fill the gaps in the inner liner chamber 101.

[0060] In some embodiments, the outer casing 10 includes an outer casing body 11, a partition plate 13, and an outer casing cover 12. The outer casing body 11 and the outer casing cover 12 are connected and form a cavity. The partition plate 13 is disposed within the cavity to divide the cavity into an inner chamber 101 and an electrical chamber 102. A thermostatic valve 32 is disposed within the electrical chamber 102, and blocks some noise through the outer casing cover 12 and the outer casing body 11 to achieve noise reduction. Specifically, the electrical chamber 102 is formed between the partition plate 13 and the outer casing cover 12.

[0061] like Figure 4 and Figure 5 As shown, in some embodiments, the thermostatic valve 32 includes a valve cover 31 and a thermostatic valve 32, with the valve cover 31 covering the thermostatic valve 32. The valve cover 31 cooperates with the outer casing 10 to achieve two noise reduction processes, thereby reducing the noise generated by the thermostatic valve 32 during operation from propagating to the outside of the water heater, which helps to improve the quietness level of the water heater.

[0062] In some embodiments, the valve cover 31 may be made of sound-insulating material to further improve the sound insulation effect. For example, the valve cover 31 may be made of materials such as aluminum plate, steel plate or polyester fiber, all of which have good sound insulation effects.

[0063] In some embodiments, a sound insulation layer is provided inside the valve cover 31. The sound insulation layer can block the transmission of noise and play a noise reduction role to reduce the noise when the water heater is working.

[0064] For example, the sound insulation layer can be made of sound insulation cotton, such as glass wool or rock wool, which has the advantages of being lightweight and having good sound absorption effect; the sound insulation layer can also be sound insulation felt or sound insulation board made of composite materials, as long as it can play the role of sound absorption and noise reduction.

[0065] Optionally, the sound insulation layer can be in contact with the thermostatic valve 32, that is, the sound insulation layer fills the space between the inner wall of the valve cover 31 and the thermostatic valve 32 to improve the sound insulation effect; the sound insulation layer can also be spaced apart from the thermostatic valve 32, for example, the sound insulation layer covers the inner wall of the valve cover 31, and the sound insulation layer does not contact the thermostatic valve 32 to form a gap, so as to avoid the sound insulation layer affecting the normal operation of the thermostatic valve 32.

[0066] In some embodiments, combined with Figure 5 and Figure 6 As shown, the thermostatic valve 32 is fixed to the inner wall of the electrical compartment 102, and a shock-absorbing component 33 is provided between the thermostatic valve 32 and the inner wall of the electrical compartment 102. The shock-absorbing component 33 can absorb and buffer the vibration generated when the thermostatic valve 32 is working, thereby reducing the vibration of the thermostatic valve 32 and thus helping to reduce the noise generated when the thermostatic valve 32 is working.

[0067] It should be noted that a fixing post can be provided on the inner wall of the electrical compartment 102 for use with screws to fix the thermostatic valve 32. The fixing post can be formed directly from the inner wall of the electrical compartment 102 to simplify the structure, reduce the number of parts, and reduce costs.

[0068] In some other embodiments, a valve mounting seat is provided on the inner wall of the electrical compartment 102, and the thermostatic valve 32 is fixed on the valve mounting seat. The shock absorber 33 can be located between the thermostatic valve 32 and the valve mounting seat. By additionally providing the valve mounting seat, on the one hand, the structural strength can be improved, and on the other hand, the vibration generated when the thermostatic valve 32 is working will first pass through the valve mounting seat, which can reduce the transmission of vibration to the inner liner or the inner wall of the electrical compartment 102, thereby avoiding the impact of vibration on other structures or the inner liner of the electrical compartment 102.

[0069] like Figure 6 As shown, in some embodiments, the valve mounting position includes a fixing post 131, the thermostatic valve 32 includes a mounting lug 321, and a shock absorber 33 is disposed between the fixing post 131 and the mounting lug 321. The mounting lug 321 and the fixing post 131 are fixed by a second fastener, thereby clamping the shock absorber 33 between the fixing post 131 and the mounting lug 321. The elasticity of the shock absorber 33 is used to absorb vibration, thereby achieving the purpose of vibration reduction and noise reduction.

[0070] For example, the second fastener is a screw. The damping member 33 includes two ends 331 and a neck 332 connecting the two ends 331. The outer diameter of the neck 332 is smaller than the outer diameter of the ends 331. The mounting ear plate 321 is provided with a positioning notch. The neck 332 is located in the positioning notch. The two ends 331 are located on opposite sides of the mounting ear plate 321. One end 331 abuts against the fixing post 131, and the other end 331 abuts against the screw head. The screw shank passes through the damping member 33 and is fixedly connected to the fixing post 131. Ends 331 are provided between the mounting ear plate 321 and the fixing post 131, and between the mounting ear plate 321 and the screw head. The ends 331 can be used to absorb the vibration transmitted to both sides by the mounting ear plate 321, which can not only reduce noise, but also prevent the screw from loosening and improve the fixing effect of the thermostatic valve 32.

[0071] Optionally, the thermostatic valve 32 may be provided with at least two mounting ears 321, each mounting ear 321 being provided with a second fastener and a shock absorber 33 to improve the shock absorption and noise reduction effect.

[0072] As the water heater continuously dispenses hot water, the temperature of the hot water flowing from the inner tank assembly 20 gradually decreases. To avoid large fluctuations in the water temperature during bathing, in some embodiments, the water heater also includes a temperature detection element 70. The detection end of the temperature detection element 70 is located inside the mixing outlet, and the temperature detection element 70 is electrically connected to the control component 60. When the water heater is working, the temperature detection element 70 monitors the water temperature at the mixing outlet and feeds the water temperature back to the control component 60. After receiving the feedback temperature, the control component 60 controls the thermostatic valve 32 to adjust the mixing ratio based on the difference between the set outlet water temperature and the feedback temperature to ensure a stable actual outlet water temperature.

[0073] For example, when the water temperature detected by the temperature sensor 70 is lower than the set outlet water temperature, the control component 60 controls the thermostatic valve 32 to increase the proportion of hot water flowing out of the inner tank assembly 20, thereby increasing the actual outlet water temperature at the mixing outlet. When the water temperature detected by the temperature sensor 70 is higher than the set outlet water temperature, the control component 60 controls the thermostatic valve 32 to decrease the proportion of hot water flowing out of the inner tank assembly 20, thereby reducing the actual outlet water temperature at the mixing outlet.

[0074] Optionally, the temperature sensing element 70 can be a temperature sensor, such as a thermistor, as long as it can detect the temperature inside the mixing outlet.

[0075] In some embodiments, the water heater also includes a piping structure that connects the inner tank assembly 20 and the thermostatic valve 32, respectively, to allow cold water to flow into the inner tank assembly 20 and the thermostatic valve 32, hot water to flow into the thermostatic valve 32 through the inner tank assembly 20, and to supply bath water at a suitable temperature. At least a portion of the water circuit components are located within the electrical compartment 102 to fully utilize the space within the electrical compartment 102 for installation, reducing exposed structures, improving the overall appearance of the unit, and enhancing the final installation effect.

[0076] In some embodiments, the piping structure includes external and internal pipes. The external pipes include an inlet pipe 41 and an outlet pipe 42 located outside the outer casing 10. The internal pipes include a connecting pipe 44 and a hot water pipe 45. The connecting pipe 44 connects two adjacent inner tanks, and at least part of the connecting pipe 44 is located within the electrical compartment 102 to centralize the piping. The connecting pipe 44 is located on one side of the inner tank, not occupying the space between two adjacent inner tanks, which facilitates a more compact layout of the two adjacent inner tanks, thereby controlling the overall size of the unit. The hot water pipe 45 is located within the electrical compartment 102 and connects to the outlet end and the second inlet of the inner tank assembly 20 to deliver hot water heated by the inner tank assembly 20 into the thermostatic valve 32. The location of the hot water pipe 45 within the electrical compartment 102 shortens the distance to the thermostatic valve 32, thereby reducing the length of the hot water pipe 45, simplifying the structure, and reducing costs.

[0077] In some embodiments, the inner liner includes an inner liner body and a flange end cap. One end of the inner liner body is open, and the flange end cap is sealed at the opening of the inner liner body. A connecting pipe 44 is connected to the flange end cap. By using the connection pipe 44 and the flange end cap to connect two adjacent inner liners, it is possible to avoid making holes in the inner liner body, thereby improving the structural strength and sealing performance of the inner liner body.

[0078] To reduce heat loss, the length of the hot water pipe 45 is shorter than the length of the connecting pipe 44, so as to minimize the distance that hot water needs to travel through the hot water pipe 45 to enter the thermostatic valve 32, thereby reducing heat loss and ensuring the accuracy of the final outlet water temperature of the thermostatic valve 32.

[0079] To minimize the length of the hot water pipe 45, the second inlet is located between two adjacent inner tanks, so that the distance between the connection point of the hot water pipe 45 and the flange end cap and the second inlet is shorter, thus shortening the length of the hot water pipe 45.

[0080] To ensure that the water entering the hot water pipe 45 is hot water heated to a certain temperature inside the inner tank, the connection point between the hot water pipe 45 and the flange end cap is close to the top of the inner tank, so that the hot water located at the top of the inner tank can more easily enter the hot water pipe 45.

[0081] The bottom end of the connecting pipe 44 is connected to the top end of the lower inner tank, which facilitates the entry of hot water in the lower inner tank into the connecting pipe 44; the top end of the connecting pipe 44 is connected to the bottom end of the upper inner tank, so that the water entering the upper inner tank is heated at the bottom first, and the heated hot water flows upward by convection, which improves the uniformity of water heating and also helps to prevent insufficiently heated water from entering the hot water pipe 45.

[0082] To optimize the pipe arrangement, in some embodiments, the heating pipe 45 and the connecting pipe 44 are arranged along the axial direction of the inner liner, i.e., the heating pipe 45 and the connecting pipe 44 are staggered to avoid mutual interference. This allows the connecting pipe 44 to fully avoid the heating pipe 45, thereby optimizing the extension direction of the heating pipe 45 and reducing its length. The heating pipe 45 is located between the inner liner and the connecting pipe 44, facilitating its connection to the thermostatic valve 32.

[0083] In some embodiments, the internal piping also includes a first branch pipe 431 and a second branch pipe 432 located in the electrical compartment 102. One end of the first branch pipe 431 is connected to the water inlet pipe 41, and the other end is connected to the inner tank assembly 20 to introduce cold water into the inner tank assembly 20. One end of the second branch pipe 432 is connected to the first branch pipe 431, and the other end is connected to the first water inlet to introduce cold water into the thermostatic valve 32.

[0084] In some embodiments, the internal piping also includes a warm water pipe 46 located in the electrical room 102, which connects the mixing outlet and the water outlet pipe 42 to facilitate the supply of mixed warm water to the user through the water outlet pipe 42.

[0085] The internal pipes have a simple structure and few pipes. They are all located in the electrical compartment 102, which facilitates connection with the thermostatic valve 32. The outer casing 10 has only the water outlet pipe 42 and the water inlet pipe 41. The exposed structure is small and easy to hide, thereby improving the effect of the water heater after installation.

[0086] In some embodiments, the inner wall of the electrical compartment 102 is provided with at least two mounting ports communicating with the inner liner compartment 101. The number of mounting ports is the same as the number of inner liners and they are arranged in a one-to-one correspondence. The flange end cap of the inner liner is fixed inside the mounting port so that the connecting pipe 44 is completely located inside the electrical compartment 102. At the same time, the flange end cap can be seen from the electrical compartment 102, which facilitates the maintenance of structural components (such as heating components) connected to the flange end cap. Exemplarily, the mounting ports are specifically provided on the partition plate 13.

[0087] In some embodiments, the control component 60 is located on one side of the inner liner assembly 20 along the front-rear direction and is disposed opposite to the thermostatic valve 32, so as to shorten the distance between the control component 60 and the thermostatic valve 32 and facilitate the electrical connection between the two.

[0088] In addition, the temperature sensor 70 is located at the mixing outlet of the thermostatic valve 32, which makes the temperature sensor 70 close to the control component 60, facilitating the circuit connection between the two. This is beneficial for the rapid transmission of electrical signals and timely detection of water temperature, thereby improving the accuracy of the water temperature in the mixing outlet.

[0089] In some embodiments, the thermostatic valve 32 is positioned between any two adjacent mounting ports, utilizing the space between them for installation. This improves the utilization rate of the space within the electrical compartment 102 and reduces the length of the inlet pipe 41 extending into the electrical compartment 102 and the length of the hot water pipe 45, thereby simplifying the water circuit structure, avoiding interference between the water circuit components and other structures within the electrical compartment 102, and ensuring the reliability of the water heater.

[0090] In order to meet the installation requirements of the thermostatic valve 32, in some embodiments, the length direction of the thermostatic valve 32 in the plane where the installation port is located is set at an angle to the line connecting the axes of the two adjacent inner liner, so as to meet the installation requirements of the thermostatic valve 32 without increasing the axis distance between the two adjacent inner liner, and provide sufficient space for the thermostatic valve 32 to be installed.

[0091] For example, such as Figure 4 and Figure 5 As shown, the thermostatic valve 32 is set at an angle to the vertical direction along its length. The thermostatic valve 32 is tilted from bottom to top toward the rear of the water heater to make full use of the diagonal dimension of the area between two adjacent installation ports, so as to meet the installation requirements of the thermostatic valve 32 without increasing the center distance between the two inner tanks.

[0092] In some embodiments, the inner tank assembly 20 includes two inner tanks, namely a first inner tank 21 and a second inner tank 22. The first inner tank 21 is located below the second inner tank 22. The first inner tank 21 is connected to the water inlet pipe 41, and the second inner tank 22 is connected to the water outlet pipe 42. This dual-inner-tank structure allows for control of cost and overall size while ensuring a large water heater capacity.

[0093] The thermostatic valve 32 is positioned between the first inner tank 21 and the second inner tank 22, which helps to reduce the distance between the thermostatic valve 32 and the water outlet pipe 42, the water inlet pipe 41 and the second inner tank 22, thereby reducing the length of the pipeline and simplifying the structure.

[0094] In some embodiments, the other ends of the water outlet pipe 42 and the water inlet pipe 41 extend out of the housing 10 and toward the rear side of the housing 10 to cover the water inlet pipe 41 and the water outlet pipe 42, ensuring the effect after installation.

[0095] In some embodiments, the first and second water inlets of the thermostatic valve 32 are arranged facing forward, and the mixing outlet is arranged facing backward, so as to facilitate the connection of the warm water pipe 46 to the mixing outlet and the second pipe interface, thereby reducing the length of the warm water pipe 46 and thus reducing the heat loss of the water in the warm water pipe 46.

[0096] In addition, the first and second water inlets face forward, and the mixing outlet faces backward, which can separate the warm water pipe 46 from other pipes, making the pipe arrangement more organized and improving maintenance convenience.

[0097] In some other embodiments, the number of inner linings may be three, four or more.

[0098] In some embodiments, such as Figure 2 As shown, the bottom of the back of the outer casing 10 is recessed to form a recessed area 1121, and the inlet pipe 41 and the outlet pipe 42 are located within the recessed area 1121. By embedding the outlet pipe 42 and the inlet pipe 41 outside the outer casing 10 into the recessed area 1121, the pipes can be prevented from protruding from the outer wall of the outer casing 10, which facilitates wall-mounted installation of the water heater, reduces the gap between the outer casing 10 and the wall, improves the installation effect, reduces the space occupied by the water heater after installation, and weakens the visual oppression.

[0099] For ease of assembly, the outer shell body 11 may include a front shell 111 and a rear shell 112 that can be detachably connected. The outer shell cover 12 is disposed at one end of the outer shell body 11 and is connected to the front shell 111 and the rear shell 112 respectively, so as to facilitate the assembly of the inner liner assembly 20 and the thermostatic valve 32 and control assembly 60 in the electrical compartment 102.

[0100] In the prior art, the external pipe is located below the outer casing 10. After being covered by a concealing cover, the concealing cover protrudes from the outer casing 10, resulting in an irregular shape of the whole machine and affecting the appearance after installation.

[0101] To address the aforementioned issues, in some embodiments, a concealed cover 50 is attached to the back of the housing 10. The concealed cover 50 is used to shield external pipes from the bottom and both sides. This arrangement positions the concealed cover 50 on the back of the housing 10, i.e., between the housing 10 and the wall. The housing 10 can shield the concealed cover 50 from the front, not only preventing pipes from being exposed on the outside but also effectively concealing the concealed cover 50. This improves the overall aesthetic consistency of the machine, thus ensuring optimal performance after installation.

[0102] To improve the concealment effect of the housing 10 on the concealment cover 50, the bottom height of the housing 10 is lower than or equal to the bottom height of the concealment cover 50, so that the concealment cover 50 can be better connected with the housing 10 as a whole, and the housing 10 can better conceal the concealment cover 50 from the front, thereby improving the overall effect after installation.

[0103] To improve the overall appearance of the water heater, the dimensions of the concealed cover 50 in the left-right direction are less than or equal to the dimensions of the outer casing 10 in the left-right direction, thereby preventing the concealed cover 50 from protruding from the outer casing 10 in the left-right direction and improving the overall installation effect.

[0104] Furthermore, by setting the recessed area 1121, space is provided for the connection of the inlet pipe 41, outlet pipe 42, and external pipes. If the location of the pre-reserved pipe opening in the user's room is suitable, the inlet pipe 41 and outlet pipe 42, along with the pre-reserved opening, can all be located within the concealed cover 50, achieving complete concealment of the pipes and ensuring that they are not exposed from any angle, thus improving the post-installation effect. In addition, since the inner tank has a circular cross-sectional shape, using the space at the rear of the bottom of the inner tank to set the recessed area 1121 allows for the installation of external pipes without increasing the overall dimensions of the water heater in the front-to-back direction. This helps to reduce the thickness of the water heater, thereby reducing the oppressive feeling caused by installing the water heater high up indoors and improving the user experience.

[0105] In some embodiments, the outer casing 10 includes a front casing 111 and a rear casing 112 that can be detachably connected. A recessed area 1121 is provided at the bottom of the back side of the rear casing 112. The water inlet pipe 41 and the water outlet pipe 42 are disposed in the recessed area 1121 to reduce the height of the water inlet pipe 41 and the water outlet pipe 42, so as to facilitate the connection of the water inlet pipe 41 and the water outlet pipe 42 to the pipe openings reserved on the wall.

[0106] like Figure 7 As shown, in some embodiments, the bottom of the back cover 112 is inclined from top to bottom towards the front to form a recessed area 1121. Optionally, the bottom of the back cover 112 can be an arc surface to fit the outer circumferential surface of the inner liner, ensuring that there is enough space inside the outer shell 10 to install the inner liner while providing installation space for external pipes.

[0107] To facilitate the installation of the concealed cover 50, such as Figure 8 As shown, the concealed cover 50 includes a concealed base plate 51 and two concealed side plates 52 arranged opposite each other. The concealed base plate 51 is connected to the concealed side plates 52 at both ends. The concealed side plates 52 extend upward from the concealed base plate 51 in a roughly U-shape. When installing the concealed cover 50, the concealed base plate 51 is connected to the bottom end of the rear shell 112, and the concealed side plates 52 are located on the left and right sides of the rear shell 112 and extend backward from the rear shell 112 to cover the water inlet pipe 41 and the water outlet pipe 42. Through the cooperation of the concealed base plate 51 and the two concealed side plates 52, the external pipes can be covered from the bottom and the left and right sides, improving the installation effect.

[0108] In order to conceal the cover 50 from the front by using the outer shell 10, the bottom of the rear shell 112 is smaller in the left-right direction than the rear end of the front shell 111, and the bottom surface of the rear shell 112 is higher than the rear end of the front shell 111, so as to provide installation space for the cover 50. After the cover 50 is installed, it is ensured that the cover 50 does not protrude from the front shell 111 downwards or in the left-right direction, so as to achieve the concealed installation of the cover 50.

[0109] For ease of maintenance, in some embodiments, the concealed cover 50 is detachably connected to the outer shell 10, so that the water inlet pipe 41 and water outlet pipe 42 can be exposed after the concealed cover 50 is removed, which facilitates the disassembly, assembly and maintenance of the water inlet pipe 41 and water outlet pipe 42.

[0110] In some embodiments, the concealment cover 50 is snapped into the outer casing 10 for easy disassembly.

[0111] Combination Figures 8-10 As shown, a first latching portion 511 is provided on the concealed base plate 51, and a second latching portion 1123 is provided on the rear shell 112. The concealed cover 50 is fixed to the outer shell 10 by the cooperation of the first latching portion 511 and the second latching portion 1123, so as to facilitate disassembly and assembly. Specifically, the first latching portion 511 includes a first protrusion protruding forward, which can abut against the top of the second latching portion 1123 to prevent the concealed cover 50 from falling off the outer shell 10.

[0112] To improve the reliability of the engagement between the first latching portion 511 and the second latching portion 1123, in some embodiments, at least a portion of the first latching portion 511 is provided with a first limiting portion 513 at its rear side, and at least a portion of the second latching portion 1123 is provided with a second limiting portion 1124 at a distance from its rear side. The first latching portion 511 and the first limiting portion 513 are located between the second latching portion 1123 and the second limiting portion 1124. Through the engagement of the second limiting portion 1124 and the first limiting portion 513, the first latching portion 511 is restricted from disengaging from the second latching portion 1123 rearward or downward, thereby improving the stability of the engagement.

[0113] In some embodiments, when assembling the concealment cover 50, the concealment base plate 51 moves from bottom to top closer to the outer shell 10, so that the first latching part 511 and the first limiting part 513 are inserted from bottom to top between the second latching part 1123 and the second limiting part 1124; during the upward insertion process, the first latching part 511 and the first limiting part 513 are deformed by external force and move closer to each other to ensure smooth insertion; when the first protrusion on the first latching part 511 moves to above the second latching part 1123, the first latching part 511 is reset, so that the first protrusion abuts against the top of the second latching part 1123 to prevent the concealment cover 50 from disengaging from the outer shell 10.

[0114] In some embodiments, a third latching portion 522 is provided on the hidden side panel 52, and correspondingly, a fourth latching portion 1125 is provided on the rear shell 112. The cooperation between the third latching portion 522 and the fourth latching portion 1125 further fixes the hidden cover 50 and improves the fixing effect.

[0115] In some embodiments, the distance between the two hidden side panels 52 can be slightly smaller than the width of the rear shell 112 in the left-right direction, so that the hidden side panels 52 can fit tightly with the rear shell 112 and improve the fixing effect.

[0116] In some embodiments, the concealment cover 50 is fixed to the outer shell 10 with screws to improve the fixing effect.

[0117] To better match the pipe openings pre-installed on the user's wall, in some embodiments, the concealed cover 50 includes a cover body and a detachable connection structure to the cover body. The cover body can form a pipe connection port at the removed detachable connection structure to facilitate the matching of the inlet pipe 41, outlet pipe 42 and the pipe openings pre-installed on the wall. This allows the water heater to be compatible with both fully concealed pipe installation and partially exposed pipe installation methods, better meeting the installation needs of different users.

[0118] Optionally, the fractured connection between the virtual fracture structure and the enclosure can be formed by reducing the local thickness of the enclosure or by setting grooves on the enclosure, so that the connection boundary between the enclosure and the virtual fracture structure forms a fracture guide structure. By breaking along the connection boundary, the virtual fracture structure can be removed to form a pipe connection port on the enclosure.

[0119] In some embodiments, at least two side walls of the enclosure are connected with a dummy structure so that pipe connection ports can be formed on at least two side walls of the enclosure, so as to facilitate the selection of the connection position with the pipe port according to actual needs.

[0120] For example, such as Figure 8 As shown, a first virtual break structure is provided on the hidden base plate 51. After removing the first virtual break structure, a first pipe connection port 512 can be formed. A second virtual break structure is provided on each hidden side plate 52. After removing the second virtual break structure, a second pipe connection port 521 can be formed.

[0121] Optionally, the virtual break structure is located at the rear edge of the enclosure so that the pipe connection port formed after removing the virtual break structure is located at the rear edge of the enclosure, which facilitates the pipe to be installed close to the wall, thereby hiding the pipe connection position from the front or at certain angles.

[0122] In some embodiments, the inner liner can be a non-metallic inner liner, such as a plastic inner liner, to improve the corrosion resistance and service life of the inner liner, give the inner liner better insulation performance, and reduce costs.

[0123] To improve the performance of the water heater, the water heater also includes a foam layer filled between the outer shell 10 and the inner tank. The foam layer is made of foaming material and can fully expand and fill the space between the outer shell 10 and the inner tank. While providing heat insulation, it can also improve the fixation of the inner tank within the outer shell 10 and increase the strength of the non-metallic inner tank.

[0124] In addition, the inner wall of the outer shell 10 at the position corresponding to the recessed area 1121 is set as an arc surface, resulting in a smaller distance between the outer shell 10 and the inner liner. The foam layer not only improves the structural strength and heat insulation effect at this position, but also provides installation space for external pipes.

[0125] To facilitate the fixing of at least two inner tanks and prevent displacement of the inner tanks due to the impact force during foaming, the water heater also includes an inner tank fixing component and a support component 24. The inner tank fixing component securely connects at least two inner tanks, and the support component 24 is disposed between two adjacent inner tanks. The support component 24 includes a support surface adapted to the outer circumferential surface of the inner tank. By setting the inner tank fixing component, at least two inner tanks can be fixed into one unit, ensuring the relative position stability between two adjacent inner tanks and facilitating the fixing of the inner tank assembly 20 within the outer shell 10. By setting the support component 24, the support surface can better support the inner tanks, avoiding instability caused by direct contact between two adjacent inner tanks and preventing damage from excessive force on the inner tanks.

[0126] To facilitate the fixing of the inner liner, the inner liner fixing component includes a clamp 23, which is sleeved on the outside of at least two inner liners and is used to fix at least two inner liners by clamping. The structure is simple and the fixing effect is good.

[0127] Optionally, at least two clamps 23 may be provided, with at least two clamps 23 spaced apart along the axial direction of the inner liner to improve the fixing effect.

[0128] It should be noted here that "the support surface is compatible with the outer circumference of the inner liner" means that the support surface is an arc surface parallel to the outer circumference of the inner liner, so as to ensure that the support surface can make full contact with the inner liner, thereby improving the fixing effect.

[0129] In this embodiment, the top and bottom surfaces of the support member 24 are both support surfaces, and the two support surfaces are symmetrically arranged relative to the horizontal plane to improve the support and fixing effect.

[0130] To improve the fixation of the inner liner, the support member 24 abuts against at least one inner wall of the clamp 23. The clamp 23 is used to restrict the position of the inner liner on the outer periphery of the inner liner. The abutment between the support member 24 and the clamp 23 can improve the stability and strength of the inner liner assembly 20.

[0131] For example, the dimension of the support member 24 in the front-to-back direction is smaller than the diameter of the inner liner, so that the rear end of the support member 24 abuts against the inner wall of the clamp 23. Under the action of the support member 24, the front side of the inner liner abuts against the inner wall of the clamp 23, thereby improving the stability of the inner liner's position. In addition, this arrangement makes the dimension of the support member 24 small in the front-to-back direction, which helps to reduce the amount of material used in the support member 24, thereby not only reducing costs but also reducing the weight of the entire machine.

[0132] To reduce the weight of the support member 24, a weight-reducing hole 241 can be provided at the end of the support member 24 that abuts against the clamp 23. It is understood that the end of the support member 24 that abuts against the clamp 23 has a larger dimension in the vertical direction. By providing a weight-reducing hole 241 at this end, the size of the weight-reducing hole 241 can be increased, thereby reducing the weight of the support member 24 and lowering costs. Figure 7 As shown, the rear end of the support member 24 abuts against the clamp 23, and the weight reduction hole 241 is provided at the rear end of the support member 24.

[0133] Optionally, the weight reduction hole 241 can be a triangular hole to better match the shape of the rear end of the support member 24, so as to maximize the size of the weight reduction hole 241 and improve the weight reduction effect.

[0134] In some other embodiments, the support member 24 may also be fixedly connected to the clamp 23, for example by fasteners.

[0135] To reduce heat loss from the inner liner through the support component 24 and to ensure the strength of the support component 24, the support component 24 can be made of PP (polypropylene) + 10% GF (glass fiber). Glass fiber is an inorganic filler with high rigidity and hardness. When compounded and modified with polypropylene, it can effectively reduce the shrinkage rate of polypropylene, improve its strength and stiffness, and also improve the temperature resistance and some flame retardant properties of polypropylene. This can effectively reduce the heat loss of the whole machine, improve the thermal insulation performance of the whole machine, and reduce the cost of the whole machine.

[0136] It should be noted that PP+10%GF can be obtained through common modification and processing methods and is a common existing material.

[0137] In some embodiments, combined with Figure 7 and Figure 9 As shown, the water heater also includes a mounting assembly 80, which is used to fix the outer casing 10 to the wall to achieve wall mounting of the water heater.

[0138] In existing technologies, after a water heater is wall-mounted, there is a large gap between the water heater and the wall, and part of the installation structure is exposed, which affects the overall visual effect of the water heater.

[0139] To address the aforementioned issues, in some embodiments, a mounting groove 1122 is recessed on the back of the outer casing 10, and the mounting assembly 80 is disposed within the mounting groove 1122, so that the back of the outer casing 10 fits against the wall, ensuring that the water heater is installed without gaps with the wall, improving the assembly effect, and increasing user satisfaction.

[0140] In addition, the mounting component 80 is embedded in the mounting groove 1122 to achieve wall-mounted installation of the water heater. It can also be used with the concealed cover 50 to improve the concealment of the inlet pipe 41 and outlet pipe 42, thus presenting a perfect installation effect.

[0141] Understandably, when assembling the water heater, the outer casing 10 is first fixed to the wall using the mounting assembly 80. Then, the outlet pipe 42, inlet pipe 41, and pre-installed pipe openings are connected. Finally, the concealed cover 50 is assembled. Because the concealed cover 50 is located between the outer casing 10 and the wall, in some embodiments, to avoid the wall tilt or the water heater tilting after installation affecting the assembly of the concealed cover 50, a certain gap is provided between the concealed cover 50 and the wall to allow for installation. This prevents the installation of the concealed cover 50 from being affected by the wall's slope or the tilt of the outer casing 10 after installation.

[0142] In some embodiments, the rear end face of the concealment cover 50 extends obliquely from top to bottom and then forward to allow it to be spaced apart from the wall. If the wall is inclined or the outer casing 10 is tilted after installation, the bottom end of the concealment cover 50 is the most difficult to install. By setting the rear end face of the concealment cover 50 to extend obliquely from top to bottom and then forward, the gap between the bottom end of the concealment cover 50 and the wall can be gradually increased from top to bottom, ensuring that the concealment cover 50 can be installed smoothly while minimizing the impact on appearance.

[0143] For example, the distance between the rear end face of the concealed cover 50 and the back surface of the housing 10 in the front-rear direction is less than or equal to 10 mm, preferably less than or equal to 5 mm, so as to reduce the gap between the water heater and the wall after installation while ensuring assembly, thereby improving the appearance.

[0144] In some other embodiments, the rear end face of the concealment cover 50 may not be inclined, but rather the rear end face of the concealment cover 50 may be located on the front side of the back of the outer casing 10, thereby ensuring that the concealment cover 50 can be spaced apart from the wall.

[0145] In some embodiments, the mounting assembly 80 includes a mounting base 81 and a mounting element 82. The mounting element 82 is fixed to the wall, and the mounting base 81 is fixed to the mounting groove 1122. The mounting base 81 is provided with hanging holes that mate with the mounting element 82. During installation, the mounting element 82 is first fixed to the wall, and the mounting base 81 is fixed in the mounting groove 1122. Then, the hanging holes on the mounting base 81 are engaged with the mounting element 82 to complete the installation of the water heater.

[0146] For example, the mounting bracket 82 can be an expansion bolt to improve the fixing effect of the water heater.

[0147] To improve the mounting and fixing effect and ease of operation, in some embodiments, the mounting groove 1122 includes a first groove segment 11221 and a second groove segment 11222 connected to each other. The depth of the first groove segment 11221 is greater than the depth of the second groove segment 11222. The mounting base 81 is fixed to the second groove segment 11222, and the hanging hole is directly opposite the first groove segment 11221. This arrangement ensures that the first groove segment 11221 can accommodate a sufficiently long mounting component 82, thereby reducing the risk of the mounting component 82 detaching from the hanging hole and also reducing assembly difficulty.

[0148] In order to increase the depth of the first tank section 11221 without increasing the space occupied by the water heater, in some embodiments, such as Figure 7 As shown, the first groove segment 11221 is located above the axis of the uppermost inner liner, so as to utilize the space above the top arc surface of the inner liner to accommodate the first groove segment 11221, which is beneficial to increase the depth of the first groove segment 11221.

[0149] In some embodiments, to improve the fixing effect between the mounting assembly 80 and the outer shell 10, the inner tank assembly 20 further includes an inner tank fixing member connecting at least two inner tanks. A first fastener is connected to the mounting base 81, and the first fastener passes through the outer shell 10 and is fixed to the inner tank fixing member. That is, the mounting base 81, the outer shell 10, and the inner tank fixing member are fixed together by the first fastener, which improves the connection effect and the strength of the connection position to ensure the mounting effect of the water heater.

[0150] In some embodiments, an inner liner chamber 101 and an electrical compartment 102 are formed inside the outer casing 10, arranged in a left-right direction. The inner liner assembly 20 is disposed within the inner liner chamber 101. The electrical compartment 102 has at least two mounting ports communicating with the inner liner chamber 101. One end of the inner liner assembly 20 is fixed to the mounting port. The recessed area 1121 has two pipe interfaces communicating with the electrical compartment 102. External pipes are connected to the inner liner assembly 20 through the pipe interfaces. This arrangement allows water to enter and exit the inner liner from one side in the left-right direction, reducing the number and length of pipes located outside the outer casing 10. This facilitates the concealment of pipes through the cooperation of the recessed area 1121 and the concealing cover 50, achieving a perfect aesthetic effect.

[0151] It should be noted that the inner liner chamber 101 is filled with a foam layer, which fills the gap between the inner wall of the inner liner chamber 101 and the inner liner.

[0152] Specifically, the two pipe interfaces are the first pipe interface and the second pipe interface, respectively. The inlet pipe 41 is connected to the first pipe interface, and the outlet pipe 42 is connected to the second pipe interface.

[0153] In the aforementioned water heater, the thermostatic valve 32 is located inside the electrical compartment 102, reducing the number of pipes located outside the outer casing 10. Only the inlet pipe 41 and outlet pipe 42 need to be concealed, thus utilizing the concealment cover 50 to hide them, thereby improving the overall appearance and installation effect. By placing the concealment cover 50 on the back of the outer casing 10, the concealment cover 50 can be covered by the outer casing 10 from the front, achieving a concealed installation of the concealment cover 50 and making the overall appearance more consistent. Combined with the recessed area 1211 on the back of the outer casing 10 and the embedded installation of the mounting component 80, the water heater can be installed flush against the wall, improving the installation effect.

[0154] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A water heater, characterized in that, include: The outer casing (10) forms an electrical compartment (102) inside the outer casing (10); The inner liner assembly (20) is disposed inside the outer shell (10), and the electrical chamber (102) is located at one axial end of the inner liner assembly (20). The inner liner assembly (20) includes at least two inner liners arranged vertically and connected in series. A thermostatic valve (32) is installed in the electrical compartment (102). The thermostatic valve (32) includes a first inlet, a second inlet and a mixing outlet. The first inlet is used to introduce cold water, and the second inlet is connected to the outlet of the inner tank assembly (20). A control component (60) is disposed in the electrical room (102). The control component (60) is electrically connected to the thermostatic valve (32) and is used to control the thermostatic valve (32).

2. The water heater according to claim 1, characterized in that, The thermostatic valve (32) is covered with a valve cover (31).

3. The water heater according to claim 2, characterized in that, A sound insulation layer is provided inside the valve cover (31), and the sound insulation layer is in contact with or spaced from the thermostatic valve (32); And / or, the valve cover (31) is made of sound-insulating material.

4. The water heater according to claim 1, characterized in that, The thermostatic valve (32) is fixed to the inner wall of the electrical compartment (102), and a shock-absorbing component (33) is provided between the thermostatic valve (32) and the inner wall of the electrical compartment (102). Alternatively, a valve mounting base is provided in the electrical compartment (102), the thermostatic valve (32) is fixed to the valve mounting base, and a shock-absorbing component (33) is provided between the thermostatic valve and the valve mounting base.

5. The water heater according to any one of claims 1-4, characterized in that, The water heater also includes a temperature detection element (70), the detection end of which is located in the mixing outlet, and the temperature detection element (70) is electrically connected to the control component (60).

6. The water heater according to any one of claims 1-4, characterized in that, The electrical compartment (102) is provided with at least two mounting ports, one end of the inner liner is fixed to the mounting port, and the thermostatic valve (32) is located between any two adjacent mounting ports.

7. The water heater according to claim 6, characterized in that, The thermostatic valve (32) is set at an angle to the line connecting the axes of the two adjacent inner liner in the length direction of the plane where the installation port is located.

8. The water heater according to claim 6, characterized in that, The control component (60) is located on one side of the inner liner component (20) in the front-back direction and is positioned opposite to the thermostatic valve (32).

9. The water heater according to any one of claims 1-4, characterized in that, The water heater also includes: A connecting pipe (44) is provided in the electrical compartment (102) for connecting two adjacent inner liner; A hot water pipe (45) is installed in the electrical compartment (102), and the hot water pipe (45) connects the inner tank assembly (20) and the second water inlet.

10. The water heater according to claim 9, characterized in that, The length of the hot water pipe (45) is less than the length of the connecting pipe (44); And / or, the hot water pipe (45) and the connecting pipe (44) are arranged along the axial direction of the inner tank, with the hot water pipe (45) located between the connecting pipe (44) and the inner tank; And / or, the second inlet is located between two adjacent inner tanks.

11. The water heater according to claim 9, characterized in that, The back bottom of the outer casing (10) is provided with a recessed area (1121), and a first pipe interface and a second pipe interface communicating with the electrical compartment (102) are provided in the recessed area (1121). The water heater also includes an inlet pipe (41) and an outlet pipe (42) located in the recessed area (1121). The inlet pipe (41) is connected to the first inlet and the inner tank assembly (20) respectively through the first pipe interface, and the outlet pipe (42) is connected to the mixing outlet through the second pipe interface.

12. The water heater according to claim 11, characterized in that, The water heater also includes: The first diversion pipe (431) connects the first pipe interface and the inner liner assembly (20). The second diversion pipe (432) connects the first diversion pipe (431) and the first inlet.

13. The water heater according to claim 11, characterized in that, The water heater also includes a concealed cover (50), which is connected to the back of the outer casing (10). The concealed cover (50) is used to cover the inlet pipe (41) and the outlet pipe (42) from the bottom and the left and right sides.

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