Double-container water heater

Abstract

The utility model relates to a double-liner water heater which comprises an outer shell, a liner assembly, an electric appliance chamber shell and a thermostatic valve, the liner assembly is arranged in the outer shell, and a first liner and a second liner of the liner assembly are communicated through a through channel so as to reduce the number of pipelines arranged on the side edge of the water heater; the electric appliance chamber shell is arranged between the inner container assembly and the first end cover, and an electric appliance chamber is formed in the electric appliance chamber shell; the thermostatic valve is mounted in the electric appliance chamber, a first interface on the thermostatic valve is connected with the water inlet pipeline, a second interface is connected with the water outlet pipeline, and a third interface is connected with the hot water pipeline; the thermostatic valve is installed in the electric appliance chamber, low-temperature water input from the water inlet pipeline and high-temperature water input from the hot water pipeline are mixed to the preset temperature and then directly output to a water using terminal from the water outlet pipeline, pipeline arrangement is simplified, installation space is saved, the problem that the overall size of the double-container water heater is increased is effectively solved, water resistance is reduced, and the service life of the double-container water heater is prolonged. The hot water output rate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a double-tank water heater. Background Art

[0002] Existing storage water heaters use a double tank to reduce the thickness of the whole unit, increase the water storage capacity of the water heater, and meet the user's large water demand.

[0003] Since the double-tank electric water heater has a large water storage capacity, it will take a long time for the hot water to be heated to the specified temperature, affecting the user experience. In addition, during the use of the electric water heater, the hot and cold water temperatures are adjusted through the shower switch. The temperature control is not accurate, and the water temperature fluctuates between hot and cold, which not only affects the user experience, but also poses safety issues such as burns.

[0004] In order to solve the problem of large fluctuations in outlet water temperature, a thermostatic valve is generally installed in a double-tank water heater. The thermostatic valve of an electric water heater needs to be installed at the water inlet and outlet. Therefore, for a double-tank water heater with the water inlet and outlet at the bottom, installing a thermostatic valve will cause the height of the entire machine to become higher, the thermostatic valve to be exposed, the aesthetics to be poor, and it is easy to be damaged during transportation. For a double-tank water heater with the water inlet and outlet on the side, since the relevant pipelines are all arranged in the electrical room on the side, it is easy to cause problems such as increased water resistance and a longer length of the entire machine. Utility Model Content

[0005] The purpose of the utility model is to provide a double-tank water heater to solve the problems existing in the prior art that the installation of a thermostatic valve in the existing double-tank water heater causes the height or length of the water heater to become larger, the thermostatic valve is exposed and easily damaged, the water resistance is large, and the constant temperature water output efficiency is low.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] The utility model proposes a double-tank water heater, which includes:

[0008] The outer shell has a first end cover and a second end cover at both ends thereof;

[0009] An inner liner assembly is disposed in the outer shell and includes a first inner liner and a second inner liner disposed in parallel, wherein the first inner liner and the second inner liner are connected via a through passage;

[0010] An electrical room housing is provided between the inner tank assembly and the first end cover, and an electrical room is formed in the electrical room housing;

[0011] A thermostatic valve is installed in the electrical room. A first interface, a second interface and a third interface are formed on the thermostatic valve. The first interface is connected to the water inlet pipe, the second interface is connected to the water outlet pipe, and the third interface is connected to the hot water pipe.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] The double-tank water heater involved in the present application has a first inner tank and a second inner tank connected by a through channel, which can reduce the number of pipes arranged on the side of the water heater, and the thermostatic valve is installed in the electrical room. After the low-temperature water input from the water inlet pipe and the high-temperature water input from the hot water pipe are mixed to a preset temperature, they are directly output from the water outlet pipe to the water terminal, which simplifies the pipeline setting, saves installation space, effectively avoids the problem of increased overall size of the double-tank water heater, and is conducive to reducing water resistance and improving hot water output rate.

[0014] In some embodiments of the present application, the first inner tank and the second inner tank are arranged horizontally, and the first inner tank is located above the second inner tank, a water outlet liner is provided in the first inner tank, and a water inlet liner is provided in the second inner tank, the water outlet liner is connected to the hot water pipeline, and the water inlet liner is connected to the water inlet pipeline.

[0015] The low-temperature water input from the water inlet pipe enters the second inner tank through the water inlet liner, is heated in the second inner tank, and the heated water is input upward into the first inner tank through the through channel. After further heating, it is input from the water outlet liner and enters the thermostatic valve through the hot water pipe.

[0016] In some embodiments of the present application, the water inlet pipeline is connected to the input end of the tee, and the two output ends of the tee are connected to the cold water pipeline and the first interface respectively.

[0017] Part of the low-temperature water input from the water inlet pipe is input into the water inlet liner through the cold water pipe and enters the second inner tank. The other part of the low-temperature water is input into the thermostatic valve through the first interface for mixing with the high-temperature water.

[0018] In some embodiments of the present application, an intermediate pipeline is further connected between the first interface and the tee piece.

[0019] The intermediate pipeline is used to realize the connection between the thermostatic valve and the tee fitting, and transports part of the low-temperature water input from the water inlet pipeline to the thermostatic valve.

[0020] In some embodiments of the present application, connecting holes with matching positions are formed on the side walls of the first inner liner and the second inner liner respectively, and punched flange portions are formed on the outer sides of the connecting holes. The through-channel is formed by connecting the punched flange portions on the first inner liner and the second inner liner.

[0021] The punched flange portion is formed by stamping, and the punched flange portions at corresponding positions of the first inner tank and the second inner tank are directly connected by welding or other means. The installation and manufacturing are simple and quick, which is conducive to reducing the layout of the pipeline between the first inner tank and the second inner tank of the conventional double-tank water heater.

[0022] In some embodiments of the present application, the first inner liner and the second inner liner each include a transverse circumferential side portion and a top circular arc portion located at both ends of the transverse circumferential side portion, and the transverse circumferential side portion and the top circular arc portion are integrally formed.

[0023] The integral formation of the lateral circumferential side portion and the top circular arc portion can avoid the weld formed by welding the lateral circumferential side portion and the top circular arc portion after they are traditionally formed separately, and the integrity is stronger.

[0024] In some embodiments of the present application, a flange opening is formed on one end of the first inner liner and the second inner liner close to the electrical room shell, and a mounting opening adapted to the position of the flange opening is formed on the electrical room shell. A mounting flange is connected to the mounting opening of the electrical room shell, and a heating element is provided on the mounting flange. The heating element extends through the flange opening into the first inner liner or the second inner liner.

[0025] In some embodiments of the present application, an output port is formed at one end of the first inner tank close to the electrical room shell, the output port is located above the flange opening, and the water outlet liner extends into the first inner tank through the output port.

[0026] In some embodiments of the present application, an input port is formed at one end of the second inner tank close to the electrical room shell, and the input port is located below the flange opening. The water inlet liner extends into the second inner tank through the input port.

[0027] In some embodiments of the present application, at least two internal transition parts are arranged at intervals on the inner liner assembly, each of the internal transition parts is arranged vertically, and the two ends of the internal transition part are respectively connected to the first inner liner and the second inner liner, and a hanging part is also provided on the outer wall of the outer shell, and the hanging part passes through the outer shell and is connected and fixed to the corresponding inner transition part.

[0028] In addition to connecting the first inner liner and the second inner liner, the inner transition part is also connected and fixed to the external hanging part, which is conducive to facilitating the fixation of the inner liner assembly and improving the stability of the connection.

[0029] In some embodiments of the present application, the hanging portion is located at an upper position of the outer shell, and a support block is further connected to the outer shell, and the support block is located at a lower position of the outer shell.

[0030] The support block is used to provide auxiliary support for the water heater so that the lower part of the water heater is supported on the wall, thereby improving the stability of the water heater installation.

[0031] In some embodiments of the present application, a water treatment device is further provided in the first inner liner and / or the second inner liner, and the water treatment device is used to treat the water in the first inner liner and / or the second inner liner.

[0032] The water treatment device can improve the water quality in the first inner tank and the second inner tank, and play the role of sterilization or adding minerals beneficial to the human body.

[0033] In some embodiments of the present application, the water inlet end of the water inlet liner extends downward in the second inner liner to the bottom of the second inner liner;

[0034] The water inlet end of the water outlet liner extends upward in the first inner liner to the top of the first inner liner.

[0035] In some embodiments of the present application, a support portion is formed on a side of the second end cap close to the inner liner assembly, and a support surface is formed on the support portion that is adapted to the shape of a corresponding position of the inner liner assembly;

[0036] A support portion is also formed on one side of the electrical room housing close to the inner tank assembly, and a support surface is formed on the support portion and is adapted to the shape of the corresponding position of the inner tank assembly.

[0037] The supporting surface is in contact with the outer walls of the top arc portions on both sides of the liner assembly, thereby improving the stability of the support for the liner assembly and playing a supporting and limiting role.

[0038] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0040] Figure 1 This is a schematic diagram of the external structure of the double-tank water heater proposed in this utility model;

[0041] Figure 2 This is a disassembly diagram of a double tank water heater;

[0042] Figure 3This is a schematic diagram of the installation of the thermostatic valve in the electrical room;

[0043] Figure 4 It is a schematic diagram of the thermostatic valve structure;

[0044] Figure 5 This is a schematic diagram of the side structure of a double-tank water heater;

[0045] Figure 6 yes Figure 5 AA section view in;

[0046] Figure 7 is a schematic structural diagram of the second end cover;

[0047] Figure 8 1 is a schematic diagram of the first inner liner structure;

[0048] Figure 9 It is a schematic diagram of the structure of the liner assembly;

[0049] Figure 10 1. It is a schematic diagram of the structure of the hooking part;

[0050] In the figure,

[0051] 100, outer shell; 110, first end cover; 120, second end cover; 121, support portion; 122, support surface; 130, hanging portion; 140, support block;

[0052] 200, liner assembly; 210, first liner; 211, punched flange portion; 212, flange opening; 220, second liner; 230, through-channel; 240, internal transition portion; 250, heating element; 260, water inlet liner; 270, water outlet liner; 280, water treatment device;

[0053] 300, electrical room housing; 301, electrical room;

[0054] 310, thermostatic valve; 311, first interface; 312, second interface; 313, third interface;

[0055] 320, tee; 330, water inlet pipe; 331, water inlet interface; 340, cold water pipe; 350, water outlet pipe; 351, water outlet interface; 360, intermediate pipe; 370, hot water pipe. DETAILED DESCRIPTION

[0056] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0059] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0060] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0061] An electric water heater uses electricity as its main energy source. The high-temperature heat generated when powered on directly heats the water stored in the electric water heater to prepare hot water.

[0062] An electric water heater usually consists of a water tank, an electric heating component, and an electric control board. A water storage cavity is formed in the water tank to store the water to be heated. The electric heating component is inserted into the water storage cavity formed by the water tank. The electric control board is used to control the on and off operation of the electric heating component so that the water in the water tank is heated to the set temperature.

[0063] The water tank of an electric water heater generally consists of an outer shell and an inner tank, with an insulation layer between the outer shell and the inner tank. The outer shell is usually made of plastic to meet the requirements of aesthetic and diverse design. The inner tank can be made of metal or plastic depending on the needs.

[0064] In addition, the insulation layer formed between the outer shell and the inner liner is made of commonly used insulation materials such as asbestos, sponge, foam plastic, polyurethane foam, etc. In conventional technology, in order to obtain a good insulation effect, the insulation layer is usually formed by foaming.

[0065] Among them, for the inner tank with a metal body, the interior of the inner tank is prone to corrosion due to the influence of water quality. For this reason, a magnesium rod is also configured on the water tank, and the magnesium rod is inserted into the water storage cavity inside the water tank.

[0066] Because magnesium has the lowest potential in the electrochemical series and is physiologically non-toxic, it is ideal for use as a magnesium rod to protect the inner liner. The size of the magnesium rod directly affects the duration and effectiveness of the protective effect. The larger the magnesium rod, the better the protection and the longer the protection lasts.

[0067] The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to deliver cold water to the water storage cavity formed in the water tank, while the hot water in the water storage cavity is output from the water outlet pipe.

[0068] For the electric heating component, electric heating methods such as electric heating wire, magnetic energy or silicon tube heating can be used to heat the water stored in the water storage cavity.

[0069] As for the electric control board, it is used to receive detection signals sent by relevant sensors (such as water temperature sensor, flow sensor), and at the same time, control the power on and off operation of the electric heating component.

[0070] When the electric water heater is working, the electric control board controls the electric heating component to be powered on for heating. When the water temperature in the water tank reaches the set value, the electric control board controls the electric heating component to be powered off.

[0071] refer to Figure 1 、 Figure 2 The utility model proposes a double-tank water heater, which includes an outer shell 100, an installation cavity is formed in the outer shell 100, and an inner tank assembly 200 is arranged in the installation cavity. The inner tank assembly 200 includes a first inner tank 210 and a second inner tank 220 arranged in parallel.

[0072] A first end cover 110 and a second end cover 120 are respectively provided at both ends of the outer shell 100 for sealing the two ends of the outer shell 100 .

[0073] The double-tank water heater involved in this application is a horizontal double-tank water heater.

[0074] refer to Figure 6 That is, the first inner liner 210 and the second inner liner 220 are both arranged horizontally, and the first inner liner 210 and the second inner liner 220 are connected by a through channel 230, so that water in the first inner liner 210 and the second inner liner 220 can flow between each other.

[0075] Specifically, a first heating cavity is formed in the first inner liner 210, a second heating cavity is formed in the second inner liner 220, and a through channel 230 is provided between the first inner liner 210 and the second inner liner 220 for connecting the first heating cavity and the second heating cavity.

[0076] Combine Figure 3 、 Figure 4 An electrical room housing 300 is further provided between the liner assembly 200 and the first end cover 110 , and an electrical room 301 is formed in the electrical room housing 300 for installing electrical components.

[0077] Among them, a thermostatic valve 310 is installed in the electrical room 301 to ensure that the outlet water temperature of the double-tank water heater is constant, reduce the problem of outlet water temperature fluctuation due to user misoperation or other reasons, and improve the user experience.

[0078] The double-tank water heater has side water inlet and outlet, that is, the water inlet pipe 330 and the water outlet pipe 350 are both connected to the end of the inner tank assembly 200.

[0079] A water inlet interface 331 and a water outlet interface 351 are formed on the outer shell 100 . The water inlet pipe 330 is connected to the electrical room 301 through the water inlet interface 331 , and the water outlet pipe 350 is connected to the electrical room 301 through the water outlet interface 351 .

[0080] The thermostatic valve 310 is formed with a first interface 311 , a second interface 312 and a third interface 313 . The first interface 311 is connected to the water inlet pipe 330 , the second interface 312 is connected to the water outlet pipe 350 , and the third interface 313 is connected to the hot water pipe 370 .

[0081] The water inlet pipe 330 is connected to the water supply terminal, the water outlet pipe 350 is connected to the water use terminal, and the hot water pipe 370 is connected to the heating cavity of the inner tank component 200 for outputting heated high-temperature water.

[0082] In the double-tank water heater involved in the present application, the first inner tank 210 and the second inner tank 220 are connected through a through channel 230 to reduce the number of pipelines arranged on the side of the water heater.

[0083] The thermostatic valve 310 is installed in the electrical room 301. After mixing the low-temperature water input from the water inlet pipe 330 and the high-temperature water input from the hot water pipe 370 to a preset temperature, it is directly output from the water outlet pipe 350 to the water terminal, which simplifies the pipeline setting, saves installation space, effectively avoids the problem of increased overall size of the double-tank water heater, and is conducive to reducing water resistance and improving hot water output rate.

[0084] In some embodiments of the present application, the first inner pot 210 and the second inner pot 220 are arranged up and down, the first inner pot 210 is located above the second inner pot 220, and the hot water pipe 370 is connected to the first heating cavity.

[0085] Combined with 5. Figure 6 A water outlet liner 270 is provided in the first inner liner 210 , and a water inlet liner 260 is provided in the second inner liner 220 .

[0086] The water outlet liner pipe 270 is connected to the hot water pipeline 370 , and the water inlet liner pipe 260 is connected to the water inlet pipeline 330 .

[0087] The low-temperature water input from the water inlet pipe 330 enters the second inner tank 220 through the water inlet liner 260, is heated in the second inner tank 220, and the heated water is input upward into the first inner tank 210 through the through channel 230. After further heating, it is input from the water outlet liner 270 and enters the thermostatic valve 310 through the hot water pipe 370.

[0088] In some embodiments of the present application, in order to maintain a constant outlet water temperature during operation, the thermostatic valve 310 needs to introduce some low-temperature water to reduce the temperature of the high-temperature water in the hot water pipe 370 .

[0089] In order to transport part of the low-temperature water in the water inlet pipe 330 to the thermostatic valve 310 , the present application further provides a tee piece 320 in the electrical room 301 .

[0090] The water inlet pipe 330 is connected to the input end of the tee piece 320 , and the two output ends of the tee piece 320 are connected to the cold water pipe 340 and the first interface 311 respectively.

[0091] The low-temperature water in the water inlet pipe 330 passes through the tee 320 , a portion of which is transported to the second heating cavity through the cold water pipe 340 and the water inlet liner 260 , and the other portion is transported to the thermostatic valve 310 through the first interface 311 .

[0092] In other words, part of the low-temperature water input from the water inlet pipe 330 is input into the water inlet liner 260 through the cold water pipe 340 and enters the second inner tank 220, and the other part of the low-temperature water is input into the thermostatic valve 310 through the first interface 311 for mixing with high-temperature water. The constant temperature water after mixing is output from the water outlet pipe 350 to the water use terminal.

[0093] In some embodiments of the present application, an intermediate pipeline 360 ​​is further connected between the first interface 311 and the tee piece 320 .

[0094] The length and arrangement direction of the intermediate pipeline 360 ​​are adapted to the specific installation positions of the tee piece 320 and the thermostatic valve 310 .

[0095] Furthermore, the intermediate pipeline 360 ​​is also used to achieve the connection between the thermostatic valve 310 and the tee piece 320 , and to transport part of the low-temperature water input from the water inlet pipeline 330 to the thermostatic valve 310 .

[0096] Cold water enters the second inner tank 220 from the cold water pipe 340, and hot water is discharged from the first inner tank 210 through the hot water pipe 370 above. The water inlet position and the water outlet position are far apart. By adjusting the structure of the water inlet liner 260 and the water outlet liner 270, the stratification of cold and hot water can be more uniform, thereby improving the hot water output rate and reducing water resistance.

[0097] Reference 6. Figure 8 、 Figure 9 In some embodiments of the present application, connecting holes with corresponding positions are formed on the side walls of the first inner liner 210 and the second inner liner 220, and a punched flange portion 211 is formed on the outer side of the connecting hole. The through channel 230 is formed by connecting the punched flange portions 211 on the first inner liner 210 and the second inner liner 220.

[0098] In some embodiments of the present application, the first inner liner 210 and the second inner liner 220 are integrally formed.

[0099] The first inner liner 210 and the second inner liner 220 both include a transverse circumferential side portion and a top circular arc portion located at both ends of the transverse circumferential side portion, and the transverse circumferential side portion and the top circular arc portion are integrally formed.

[0100] The integral formation of the lateral circumferential side portion and the top circular arc portion can avoid welds formed by welding the lateral circumferential side portion and the top circular arc portion after they are traditionally formed separately, and the integrity is stronger.

[0101] The punched flange portion 211 is formed by stamping, and the punched flange portions 211 at corresponding positions of the first inner tank 210 and the second inner tank 220 are directly connected by welding or other means. The installation and manufacturing are simple and quick, which is conducive to reducing the layout of the pipeline between the first inner tank 210 and the second inner tank 220 of the conventional double-tank water heater.

[0102] The specific forming process of the first inner liner 210 and the second inner liner 220 is as follows:

[0103] First, punching is performed on the side walls of the first inner liner 210 and the second inner liner 220 to form the punched flange portion 211 .

[0104] The first inner liner 210 and the second inner liner 220 are both made of straight tubes. Punching and flanging processes are performed on the side walls of the straight tubes to form the punched and flanging portions 211 .

[0105] After the punching and flanging portion 211 is formed, one end of the straight pipe is screwed and compressed. During the screwing and compression process, a flange opening 212 is reserved to facilitate the assembly of structures such as the flange.

[0106] After one end of the straight tube is formed, the other end is spun to form a seamless end, thereby achieving the integral formation of the top arc portion and the lateral circumferential side portion of the first inner liner 210 and the second inner liner 220.

[0107] That is, a flange opening 212 is formed on one end of the first inner liner 210 and the second inner liner 220 close to the electrical room shell 300, and a mounting opening that matches the position of the flange opening 212 is formed on the electrical room shell 300. A mounting flange is connected to the mounting opening of the electrical room shell 300, and a heating element 250 is provided on the mounting flange. The heating element 250 extends through the flange opening 212 to the first inner liner 210 or the second inner liner 220.

[0108] The heating element 250 is specifically a heating pipe structure, and the mounting flanges extend the heating pipe into the first heating cavity and the second heating cavity respectively to heat the water in the first cavity and the second cavity.

[0109] An output port is formed at one end of the first inner tank 210 close to the electrical room shell 300. The output port is a through-hole structure. The output port is located above the flange opening 212. The water outlet liner 270 extends into the first inner tank 210 through the output port.

[0110] Since water with a higher temperature is transported upward in the heating cavity, the water outlet liner 270 is arranged at an upper position of the first heating cavity to facilitate the output of hot water.

[0111] Similarly, an input port is formed at one end of the second inner tank 220 close to the electrical room shell 300. The input port is also a through-hole structure. The input port is located below the flange opening 212, and the water inlet liner 260 extends into the second inner tank 220 through the input port.

[0112] Since water with a lower temperature sinks in the heating cavity, the water inlet liner 260 is set at a lower position of the second heating cavity to facilitate the input of cold water.

[0113] In some embodiments of the present application, in order to improve the efficiency of cold water input and hot water output, the water inlet liner 260 and the water outlet liner 270 are arranged in a direction parallel to the axial direction of the first inner tank 210, that is, the water inlet liner 260 and the water outlet liner 270 are respectively arranged horizontally in the inner tank assembly 200.

[0114] In other embodiments, a plurality of water inlet and outlet holes are dispersedly provided on the pipe walls of the water inlet liner 260 and the water outlet liner 270 to improve the efficiency of water inlet or water outlet.

[0115] In some embodiments of the present application, the water inlet end of the water inlet liner 260 extends downward in the second inner liner 220 to the bottom of the second inner liner 220 to improve water circulation at the bottom of the second heating cavity.

[0116] The water inlet end of the water outlet liner 270 extends upward in the first inner container 210 to the top of the first inner container 210 so that the hot water at the top of the first heating cavity can be completely output.

[0117] refer to Figure 10 The double tank water heater is hung on the wall through a hanging part 130. Specifically, the hanging part 130 is arranged on the rear side of the outer shell 100. The number of the hanging parts 130 is at least two, and the hanging parts 130 are arranged at intervals to improve the stability of the installation of the double tank water heater.

[0118] Furthermore, the hanging portion 130 is located at an upper position of the outer shell 100 , and a support block 140 is further connected to the outer shell 100 , and the support block 140 is located at a lower position of the outer shell 100 .

[0119] The support block 140 is used to provide auxiliary support for the water heater so that the lower part of the water heater is supported on the wall, thereby improving the stability of the water heater installation.

[0120] In some embodiments of the present application, since the weight of the inner liner assembly 200 is relatively large, in order to reduce the force exerted by the inner liner assembly 200 on the outer shell 100, at least two inner transition parts 240 are also arranged at intervals on the inner liner assembly 200. The inner liner assembly 200 is connected and fixed to the hanging part 130 through the inner transition part 240, so that most of the weight of the inner liner assembly 200 is applied to the hanging part 130, thereby reducing the pressure on the outer shell 100.

[0121] Specifically, each internal transition portion 240 is vertically arranged, and the two ends of the internal transition portion 240 are respectively connected to the first inner liner 210 and the second inner liner 220. In addition to achieving external connection and fixation of the inner liner assembly 200, the internal transition portion 240 also helps to improve the connection and fixation between the first inner liner 210 and the second inner liner 220, and improve the stability of the connection between the first inner liner 210 and the second inner liner 220.

[0122] refer to Figure 7 In some embodiments of the present application, a support portion 121 is formed on one side of the second end cover 120 close to the inner liner assembly 200 , and a support surface 122 is formed on the support portion 121 , which is adapted to the shape of the corresponding position of the inner liner assembly 200 .

[0123] A support portion 121 is also formed on one side of the electrical room housing 300 close to the inner container assembly 200 . A support surface 122 is formed on the support portion 121 , which is adapted to the shape of the corresponding position of the inner container assembly 200 .

[0124] The support surface 122 is in contact with the outer walls of the top arc portion on both sides of the liner assembly 200, thereby improving the stability of the support for the liner assembly 200 and playing a supporting and limiting role.

[0125] Reference again Figure 6 In some embodiments of the present application, a water treatment device 280 is further provided in the first inner liner 210 and / or the second inner liner 220, and the water treatment device 280 is used to treat the water in the first inner liner 210 and / or the second inner liner 220.

[0126] The water treatment device 280 can improve the water quality in the first inner liner 210 and the second inner liner 220, and play the role of sterilization or adding minerals beneficial to the human body.

[0127] In some embodiments, the water treatment component includes an inner tube and an outer tube (not shown) that are sleeved together, and a purification inner cavity is formed between the inner tube and the outer tube for filling materials.

[0128] The water treatment component is configured to perform water quality treatment on the water flowing through it, and can perform water purification or mineralization.

[0129] The outer tube is provided with a plurality of through purification holes, which facilitate the processing of the materials in the inner cavity to purify the water in the inner tank, thereby achieving functions such as scale prevention, mineralization, and chlorine removal.

[0130] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0131] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A double tank water heater, characterized in that: include: The outer shell has a first end cover and a second end cover at both ends thereof; An inner liner assembly is disposed in the outer shell and includes a first inner liner and a second inner liner disposed in parallel, wherein the first inner liner and the second inner liner are connected via a through passage; An electrical room housing is provided between the inner tank assembly and the first end cover, and an electrical room is formed in the electrical room housing; A thermostatic valve is installed in the electrical room. A first interface, a second interface and a third interface are formed on the thermostatic valve. The first interface is connected to the water inlet pipe, the second interface is connected to the water outlet pipe, and the third interface is connected to the hot water pipe.

2. The double tank water heater according to claim 1, characterized in that: The first inner tank and the second inner tank are arranged horizontally, and the first inner tank is located above the second inner tank. A water outlet liner is provided in the first inner tank, and a water inlet liner is provided in the second inner tank. The water outlet liner is connected to the hot water pipeline, and the water inlet liner is connected to the water inlet pipeline.

3. The double tank water heater according to claim 1, characterized in that: The water inlet pipeline is connected to the input end of the tee, and the two output ends of the tee are connected to the cold water pipeline and the first interface respectively.

4. The double tank water heater according to claim 3, characterized in that: An intermediate pipeline is also connected between the first interface and the tee piece.

5. The double tank water heater according to claim 3, characterized in that: Connecting holes with matching positions are formed on the side walls of the first liner and the second liner respectively, and punched flanges are formed on the outside of the connecting holes. The through channel is formed by connecting the punched flanges on the first liner and the second liner.

6. The double tank water heater according to claim 1, characterized in that: The first inner container and the second inner container each include a transverse circumferential side portion and a top circular arc portion located at both ends of the transverse circumferential side portion, and the transverse circumferential side portion and the top circular arc portion are integrally formed.

7. The double tank water heater according to claim 2, characterized in that: The first inner liner and the second inner liner are formed with a flange opening at one end close to the electrical room shell, and the electrical room shell is formed with a mounting opening that is adapted to the position of the flange opening. The mounting opening of the electrical room shell is connected to a mounting flange, and a heating element is provided on the mounting flange. The heating element extends through the flange opening into the first inner liner or the second inner liner.

8. The double tank water heater according to claim 7, characterized in that: An output port is formed at one end of the first inner tank close to the electrical room housing. The output port is located above the flange opening. The water outlet liner extends into the first inner tank through the output port.

9. The double tank water heater according to claim 7, characterized in that: An input port is formed at one end of the second inner tank close to the electrical room housing. The input port is located below the flange opening. The water inlet liner extends into the second inner tank through the input port.

10. The double tank water heater according to claim 1, characterized in that: At least two inner transition parts are also arranged at intervals on the inner liner assembly, each of the inner transition parts is arranged vertically, and the two ends of the inner transition part are respectively connected to the first inner liner and the second inner liner. A hanging part is also provided on the outer wall of the outer shell, and the hanging part passes through the outer shell and is connected and fixed to the corresponding inner transition part.

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