Inner container assembly for electric water heater and electric water heater

Abstract

The utility model discloses an electric water heater and an inner container assembly for the electric water heater, and the inner container assembly comprises a container body provided with a mounting port; the ceramic electric heating module comprises an outer sleeve and a ceramic heating core, the first end of the outer sleeve is of a closed structure, the second end of the outer sleeve is of an open structure, and the ceramic heating core is arranged in the outer sleeve; the outer sleeve extends into the container body through the mounting opening, and the outer sleeve is connected with the mounting opening in a sealing manner; and the magnesium rod is arranged in the container body and is connected with the first end of the outer sleeve. The ceramic heating core is arranged in the outer sleeve, so that the ceramic heating core is isolated from water, and corrosion of the ceramic heating core is avoided; heat of the ceramic heating core heats water in the container body at 360 degrees through the outer sleeve, so that the heating area is increased, and rapid water heating is facilitated; and the magnesium rod is connected with the outer sleeve, so that the occupied space of the magnesium rod is reduced, and the magnesium rod can be conveniently mounted on the small-caliber container body.

Description

Technical Field

[0001] The utility model belongs to the technical field of water heaters, and in particular relates to an inner tank component for an electric water heater and the electric water heater. Background Art

[0002] At present, water heaters are household appliances commonly used in people's daily lives. Water heaters are divided into electric water heaters, gas water heaters, heat pump water heaters and solar water heaters. Electric water heaters are widely used because of their convenience. Among them, electric water heaters can be divided into storage electric water heaters and instant electric water heaters according to the size of the heating power. The storage electric water heater is equipped with a water tank, which has the characteristics of large water output and stable water temperature, and is purchased and used by more families. In order to protect the inner tank from corrosion in the electric water heater, a magnesium rod is usually set. The magnesium rod anode is an active metal. It protects the inner tank through the cathodic protection method of the sacrificial anode. It is one of the key parts of the electric water heater. In order to facilitate processing, the magnesium rod is usually set on the end cap of the inner tank of the electric water heater, but the end cap is generally provided with other accessories, and the space is small, which is not convenient for the processing and installation of the magnesium rod.

[0003] The existing Chinese patent with announcement number CN205878627U discloses an electric water heater with a freely matching control system, which is composed of a body part and a control part that are independent of each other. The body part includes: an inner tank, a water inlet pipe and a water outlet pipe connected to the inner tank, an electric heater and a magnesium rod arranged in the inner tank, and a first terminal connected to the electric heater; the control part includes: a main controller, an operation display connected to the main controller, a power cord and a second terminal; the main controller and the electric heater are connected through the first terminal and the second terminal.

[0004] The above electric water heater is convenient for processing and installing the magnesium rod by setting the magnesium rod on the cylinder wall of the inner tank, but for the small-caliber inner tank, it is difficult to have enough space to install the assembly structure of the magnesium rod; in addition, the electric heater of the above electric water heater is in direct contact with water, and the dissolved oxygen, carbon dioxide, chloride ions, etc. in the water are easy to corrode the electric heater. In view of this, how to design an electric water heater technology that takes up little space for the installation of the magnesium rod and reduces the corrosion of the electric heater is the technical problem to be solved by the utility model. Utility Model Content

[0005] The utility model provides an inner tank component for an electric water heater and the electric water heater, which can reduce the space occupied by the installation of the magnesium rod.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] In a first aspect, the utility model provides an inner tank assembly for an electric water heater, comprising:

[0008] A gallbladder body, wherein a mounting opening is formed on the gallbladder body;

[0009] A ceramic electric heating module, comprising an outer sleeve and a ceramic heating core, wherein the first end of the outer sleeve is a closed structure, the second end of the outer sleeve is an open structure, and the ceramic heating core is arranged in the outer sleeve; the outer sleeve extends into the gallbladder body through the installation port, and the outer sleeve is sealed and connected to the installation port;

[0010] A magnesium rod is disposed in the gallbladder body and connected to the first end of the outer sleeve.

[0011] In some embodiments of the present application, the magnesium rod is fixedly connected or detachably connected to the outer sleeve.

[0012] By fixedly connecting the magnesium rod to the outer sleeve or detachably connecting the magnesium rod to the outer sleeve, the space occupied by the magnesium rod is reduced, the process is simplified, and the cost is reduced.

[0013] In some embodiments of the present application, the axis of the magnesium rod coincides with the axis of the outer sleeve.

[0014] By aligning the axis of the magnesium rod with the axis of the outer sleeve, on the one hand, it is beneficial to improve the structural regularity, and on the other hand, it reduces the stress concentration point between the magnesium rod and the outer sleeve, thereby reducing the damage of the magnesium rod during transportation.

[0015] In some embodiments of the present application, the gallbladder body is arranged horizontally or vertically;

[0016] When the gallbladder body is arranged transversely, the outer sleeve is arranged transversely inside the gallbladder body, and the outer sleeve extends obliquely downward from the mounting opening toward the interior of the gallbladder body.

[0017] When the tank body is arranged horizontally, the outer sleeve is arranged horizontally inside the tank body, and the outer sleeve extends downward from the installation opening toward the inside of the tank body, which is beneficial to heating the cold water at the bottom of the tank body and improving the hot water output rate;

[0018] When the tank body is arranged vertically, whether the outer casing is inclined has little effect on the heating of cold water.

[0019] In some embodiments of the present application, the ceramic electric heating module further includes:

[0020] A first flange, which is sleeved on the outer side of the second end of the outer sleeve and fixedly connected to the outer sleeve, and the first flange is perpendicular to the axis of the gallbladder body;

[0021] The angle between the axis of the outer sleeve and the axis of the gallbladder body is α, 0°<α≤9°.

[0022] By sleeveing ​​the first flange on the outside of the second end of the outer sleeve and fixedly connecting it to the outer sleeve, since the outer sleeve extends downwardly and obliquely toward the inside of the gallbladder body, there is an angle between the first flange and the axis of the outer sleeve. During processing, the axis of the outer sleeve is not perpendicular to the first flange, which makes it easy to set the inclination angle of the outer sleeve in advance and facilitates subsequent installation.

[0023] In some embodiments of the present application, a positioning groove is formed on the end surface of the ceramic heating core; the ceramic electric heating module further includes:

[0024] A connecting piece, the connecting piece includes a clamping portion and a connecting portion connected to each other; wherein the clamping portion abuts against the positioning groove, the connecting portion is fixedly connected to the first flange, and the connecting piece is configured to fix the ceramic heating core and the first flange together.

[0025] By setting a connecting piece and setting a positioning groove on the end face of the ceramic heating core, the pressing part of the connecting piece abuts against the positioning groove, and the connecting part of the connecting piece is fixedly connected to the first flange, so that the connecting piece connects the ceramic heating core and the first flange together. The connection method is simple and convenient for processing and installation.

[0026] In some embodiments of the present application, the liner body includes an inner liner barrel and a head, and the mounting port is located at the center of the head; a second flange is formed on the head at the edge of the mounting port, and the first flange and the second flange are fixedly connected by fasteners.

[0027] The vessel body includes an inner barrel and a head, the installation port is set at the center of the head, a second flange is formed on the edge of the installation port on the head, and the first flange and the second flange are fixedly connected together to achieve fixed connection between the ceramic electric heating module and the vessel body.

[0028] In some embodiments of the present application, the inner tank assembly for the electric water heater further includes:

[0029] A temperature detector is disposed on the sealing head and is configured to detect the temperature of water in the bile body.

[0030] By arranging a temperature detector on the end cover, the integration of the end cover is improved, and the temperature detector is convenient for detecting the temperature of water in the tank body.

[0031] In some embodiments of the present application, the axis of the temperature detector remains parallel to the axis of the bile body.

[0032] By keeping the axis of the temperature detector parallel to the axis of the gallbladder body, it is helpful to accurately detect the water temperature at the same height in the gallbladder body.

[0033] In a second aspect, the utility model provides an electric water heater, comprising an inner tank and an outer shell, wherein the inner tank is arranged in the outer shell, and the inner tank adopts the inner tank assembly for an electric water heater as described in any one of the embodiments of the first aspect above.

[0034] Compared with the prior art, the advantages and positive effects of the utility model are as follows: a gallbladder body, a ceramic electric heating module and a magnesium rod are arranged, an installation port is formed on the gallbladder body, the ceramic electric heating module includes an outer sleeve and a ceramic heating core, the first end of the outer sleeve is a closed structure, the second end of the outer sleeve is an open structure, the outer sleeve extends into the gallbladder body through the installation port, the ceramic heating core is arranged in the outer sleeve, the ceramic heating core is isolated from the water in the gallbladder body, which is beneficial to avoid corrosion of the ceramic heating core; the heat of the ceramic heating core heats the water in the gallbladder body 360° through the outer sleeve, thereby increasing the heating area, which is beneficial to quickly heating the water and improving the efficiency of the electric water heater in producing hot water; the magnesium rod is connected to the outer sleeve, which is beneficial to reducing the space occupied by the magnesium rod, facilitating the installation of the magnesium rod on a small-diameter gallbladder body, and expanding the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 This is one of the structural schematic diagrams of an embodiment of an inner tank assembly for an electric water heater provided by the utility model;

[0037] Figure 2 A schematic diagram of the internal structure of an inner tank assembly for an electric water heater provided by the utility model;

[0038] Figure 3 The second structural schematic diagram of an embodiment of an inner tank assembly for an electric water heater provided by the utility model;

[0039] Figure 4 for Figure 3 Sectional view along AA direction;

[0040] Figure 5 This is one of the structural schematic diagrams of the ceramic electric heating module and the magnesium rod provided by the utility model;

[0041] Figure 6A schematic diagram of the internal structure of the ceramic electric heating module and the magnesium rod provided by the utility model;

[0042] Figure 7 This is the second structural schematic diagram of the ceramic electric heating module and the magnesium rod provided by the utility model;

[0043] Figure 8 This is the third structural schematic diagram of the ceramic electric heating module and the magnesium rod provided by the utility model;

[0044] Fig. 9 This is a third structural schematic diagram of an embodiment of an inner tank assembly for an electric water heater provided by the utility model.

[0045] Description of reference numerals:

[0046] 1. Tank body; 11. Inner tank barrel; 12. End cap; 121. Mounting port; 122. Second flange;

[0047] 2. Ceramic electric heating module; 21. Outer sleeve; 211. First end; 212. Second end; 22. Ceramic heating core; 221. Positioning groove; 222. First ceramic connecting block; 223. Second ceramic connecting block; 224. Insulating core; 2241. Sub-core; 225. Pull rod; 23. First flange; 24. Connector; 241. Pressing part; 242. Connecting part;

[0048] 3. Magnesium rod;

[0049] 4. Temperature detector. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0055] An electric water heater uses electricity as its main energy source. The high-temperature heat generated after power is turned on directly heats the water stored in the electric water heater to prepare hot water.

[0056] An electric water heater usually includes a water tank, an electric heating component, an electric control board and other components. 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 a set temperature.

[0057] For the water tank of an electric water heater, the water tank generally includes an outer shell and an inner tank, and an insulation layer is formed between the outer shell and the inner tank. Among them, the outer shell is generally made of plastic material to meet the design requirements of beautiful and diverse shapes; the inner tank can be made of metal or plastic according to needs.

[0058] In addition, the insulation layer formed between the outer shell and the inner liner, commonly used insulation materials include: 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.

[0059] The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to transport 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.

[0060] 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.

[0061] As for the electric control board, it is used to receive the detection signals sent by relevant sensors (such as water temperature sensors, flow sensors), and at the same time, control the power on and off operation of the electric heating components.

[0062] 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.

[0063] Among them, for the inner tank, due to the influence of water quality, the inside of the inner tank is prone to corrosion. 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.

[0064] The magnesium rod is an important component in the electric water heater. It protects the inner tank, prevents the formation and accumulation of scale, and prolongs the service life.

[0065] Magnesium rod is an alloy rod composed of magnesium, aluminum, chromium, zinc, calcium and other metal elements. Since magnesium is the metal with the lowest potential in the electrochemical series, it is physiologically non-toxic. In electric water heaters, magnesium rods will react with calcium and magnesium ions in water to produce water-insoluble calcium carbonate and magnesium carbonate, thereby avoiding the formation of scale. Therefore, it is ideal to use magnesium rods to protect the inner tank.

[0066] In the first aspect, combined Figures 1 to 9 As shown, an embodiment of the present disclosure provides an inner tank assembly for an electric water heater, and the inner tank assembly for the electric water heater includes a tank body 1, a ceramic electric heating module 2 and a magnesium rod 3.

[0067] Combination Figure 2 As shown, the gallbladder body 1 is used to store water, and a mounting opening 121 is formed on the gallbladder body 1;

[0068] The ceramic electric heating module 2 includes an outer sleeve 21 and a ceramic heating core 22. The first end 211 of the outer sleeve 21 is a closed structure, and the second end 212 of the outer sleeve 21 is an open structure. The ceramic heating core 22 enters the outer sleeve 21 through the second end 212 of the outer sleeve 21 and is fixed in the outer sleeve 21. The outer sleeve 21 extends into the gallbladder body 1 through the installation opening 121. The outer sleeve 21 is sealed and connected to the installation opening 121, so that the ceramic electric heating module 2 is sealed and connected to the installation opening 121 of the gallbladder body 1.

[0069] The magnesium rod 3 is arranged in the gallbladder body 1 and connected to the first end 211 of the outer sleeve 21, so that there is no need to open a hole on the gallbladder body 1 to install the magnesium rod 3, which simplifies the processing process.

[0070] Specifically, the ceramic heating core 22 is arranged in the outer sleeve 21, and the outer sleeve 21 extends into the gallbladder body 1 to directly contact the water in the gallbladder body 1, while the ceramic heating core 22 in the outer sleeve 21 is isolated from the water in the gallbladder body 1, which is beneficial to avoid corrosion of the ceramic heating core 22, thereby protecting the ceramic heating core 22; the heat of the ceramic heating core 22 heats the water in the gallbladder body 1 by 360° through the outer sleeve 21, thereby increasing the heating area, being beneficial to quickly heating the water and improving the efficiency of hot water output; the magnesium rod 3 is connected to the outer sleeve 21, which is beneficial to reducing the space occupied by the magnesium rod 3 and facilitating the installation and processing of the magnesium rod 3.

[0071] Among them, the outer sleeve 21 is made of heat-conducting metal materials such as copper, aluminum, and stainless steel, and has a certain structural strength. While satisfying the protection of the ceramic heating core 22, it also has good thermal conductivity, thereby ensuring that the heat generated by the ceramic heating core 22 is quickly transferred to the water in the gallbladder body 1 through the outer sleeve 21.

[0072] It should be noted that a layer of enamel is provided on the inner and outer surfaces of the outer sleeve 21. The enamel material has good mechanical properties, good insulation, heat resistance, and good chemical stability. It can resist the erosion of moisture and has certain acid and alkali resistance, which is beneficial to prolonging the service life of the ceramic electric heating module 2.

[0073] The inner tank assembly of the present application is used to be installed on a water heater, which can be a single-tank water heater or a double-tank water heater. The inner tank assembly can be used to fill cold water into the water heater or to transport hot water to a water terminal.

[0074] The application of the inner tank assembly of the present application in a double tank water heater is as follows Figures 1 to 8 shown.

[0075] The application of the inner tank assembly of the present application in a single tank water heater is as follows Fig. 9 shown.

[0076] In some embodiments of the present application, the magnesium rod 3 is fixedly connected or detachably connected to the outer sleeve 21 .

[0077] Specifically, by fixedly connecting the magnesium rod 3 to the outer sleeve 21 or detachably connecting them, the space occupied by the magnesium rod 3 is reduced, the processing process is simplified, and the cost is reduced.

[0078] Combination Figure 3 and Figure 4 As shown, illustratively, the magnesium rod 3 is fixedly connected to the outer sleeve 21, mainly by welding. Specifically, the magnesium rod 3 is first welded to the metal portion of the first end 211 of the outer sleeve 21, and then the outer sleeve 21 is enameled.

[0079] It should be noted that the magnesium rod 3 and the outer sleeve 21 are fixedly connected by welding, and a sufficient amount of the magnesium rod 3 needs to be ensured.

[0080] Combination Figure 8 As shown, in certain embodiments of the present application, the magnesium rod 3 is detachably connected to the metal portion of the first end 211 of the outer sleeve 21 by means of a threaded connection.

[0081] An exemplary process is as follows: a screw is welded at the end of the magnesium rod 3, a nut is welded to the metal portion of the first end 211 of the outer sleeve 21, and then the outer sleeve 21 is enameled. During the enameling process, the threads in the nut need to be sealed to avoid covering the threads during the enameling process. After the enameling process is completed, the magnesium rod 3 is screwed onto the outer sleeve 21 to threadably connect the two.

[0082] Specifically, by threading the magnesium rod 3 and the outer sleeve 21 together, it is convenient to clean and replace the magnesium rod 3. In this case, the magnesium rod 3 needs to be cleaned regularly to ensure its normal operation. When cleaning, the magnesium rod 3 needs to be taken out, rinsed with clean water, and then put back to its original place to ensure its normal operation. At the same time, the magnesium rod 3 has a certain lifespan and needs to be replaced regularly. When replacing the magnesium rod 3, the old magnesium rod 3 needs to be taken out and checked whether there is obvious corrosion on its surface. If so, the magnesium rod 3 should be replaced in time.

[0083] It should be noted that a nut may be welded at the end of the magnesium rod 3, and a screw may be welded at the metal portion of the first end 211 of the outer sleeve 21. The specific configuration may be based on actual needs.

[0084] Of course, the detachable connection between the magnesium rod 3 and the outer sleeve 21 includes but is not limited to a connection method of a nut or a screw.

[0085] In other embodiments of the present application, the axis of the magnesium rod 3 coincides with the axis of the outer sleeve 21 .

[0086] Specifically, by aligning the axis of the magnesium rod 3 with the axis of the outer sleeve 21, on the one hand, it is beneficial to improve the structural regularity, and on the other hand, it reduces the stress concentration point between the magnesium rod 3 and the outer sleeve 21, thereby reducing damage to the magnesium rod 3 during transportation.

[0087] In certain embodiments of the present application, the gallbladder body 1 is arranged horizontally or vertically;

[0088] When the gallbladder body 1 is arranged transversely, the outer sleeve 21 is arranged transversely inside the gallbladder body 1 , and the outer sleeve 21 extends obliquely downward from the mounting opening 121 toward the interior of the gallbladder body 1 .

[0089] Specifically, by arranging the gallbladder body 1 horizontally and arranging the outer sleeve 21 horizontally inside the gallbladder body 1, since the density of hot water is less than that of cold water, the hot water rises and the cold water falls inside the gallbladder body 1, and the outer sleeve 21 extends downwardly from the installation port 121 toward the inside of the gallbladder body 1, which is beneficial to heating the cold water at the bottom of the gallbladder body 1, thereby improving the hot water output rate.

[0090] When the tank body 1 is arranged vertically, whether the outer sleeve 21 is arranged inclined has little effect on the hot water output rate of cold water.

[0091] Combination Figure 4 and Figure 7 As shown, in some embodiments of the present application, the ceramic electric heating module 2 further includes a first flange 23 .

[0092] The first flange 23 is sleeved on the outer side of the second end 212 of the outer sleeve 21 and is fixedly connected to the outer sleeve 21. The first flange 23 is perpendicular to the axis of the gallbladder body 1.

[0093] The angle between the axis of the outer sleeve 21 and the axis of the gallbladder body 1 is α, 0°<α≤9°.

[0094] Specifically, by sleeved the first flange 23 on the outside of the second end 212 of the outer sleeve 21 and fixedly connected to the outer sleeve 21, since the outer sleeve 21 extends downwardly and obliquely toward the inside of the gallbladder body 1, there is an angle less than 90° between the first flange 23 and the axis of the outer sleeve 21. During processing, the axis of the outer sleeve 21 is not perpendicular to the first flange 23, which facilitates the setting of the inclination angle of the outer sleeve 21 in advance, which is beneficial to subsequent installation.

[0095] Combination Figure 5 and Figure 6 As shown, specifically, the first flange 23 is sealed and fixedly connected to the outer sleeve 21 by welding.

[0096] In some embodiments of the present application, a positioning groove 221 is formed on the end surface of the ceramic heating core 22 ; the ceramic electric heating module 2 also includes a connecting piece 24 .

[0097] The connecting member 24 includes a clamping portion 241 and a connecting portion 242 connected to each other; wherein the clamping portion 241 abuts against the positioning groove 221, and the connecting portion 242 is fixedly connected to the first flange 23, and the connecting member 24 is configured to fix the ceramic heating core 22 and the first flange 23 together.

[0098] Specifically, by providing a connecting piece 24 and providing a positioning groove 221 on the end face of the ceramic heating core 22, the clamping portion 241 of the connecting piece 24 abuts against the positioning groove 221, and the ceramic heating core 22 is pressed toward the first flange 23. At the same time, the connecting portion 242 of the connecting piece 24 is fixedly connected to the first flange 23. In this way, the connecting piece 24 connects the ceramic heating core 22 and the first flange 23 together. The connection method is simple and convenient for processing and installation.

[0099] Specifically, the connecting portion 242 is connected to the first flange 23 by welding or fixing with fasteners.

[0100] Combination Figure 7 As shown, in certain embodiments of the present application, the connecting member 24 is in an L-shaped structure.

[0101] In other embodiments of the present application, the liner body 1 includes an inner liner barrel 11 and a head 12, the head 12 is symmetrically welded at both ends of the inner liner barrel 11, and the mounting port 121 is located at the center of the head 12; a second flange 122 is formed on the edge of the mounting port 121 on the head 12, and the first flange 23 and the second flange 122 are fixedly connected by fasteners.

[0102] Specifically, the gallbladder body 1 includes an inner barrel 11 and a head 12, and the mounting port 121 is set at the center of the head 12. A second flange 122 is formed on the head 12 at the edge of the mounting port 121. By fixing the first flange 23 and the second flange 122 together, the ceramic electric heating module 2 and the gallbladder body 1 can be fixedly connected.

[0103] In some other embodiments, a flange is formed on the edge of the sealing head 12 located at the installation opening 121, and the second flange 122 is clamped in the flange.

[0104] In order to improve the sealing effect of the gallbladder body 1, a sealing gasket is arranged between the first flange 23 and the second flange 122.

[0105] Combination Figure 2 As shown, in some embodiments of the present application, the inner tank assembly for the electric water heater further includes a temperature detector 4 .

[0106] The temperature detector 4 is disposed on the sealing head 12 , and the temperature detector 4 and the ceramic electric heating module 2 are located on the sealing head 12 on the same side of the inner tank 11 . The temperature detector 4 is configured to detect the temperature of water in the tank body 1 .

[0107] Specifically, by arranging a temperature detector 4 on the head 12, and the temperature detector 4 and the ceramic electric heating module 2 are located on the head 12 on the same side of the inner tank barrel 11, the integration of the head 12 is improved, and the temperature detector 4 is convenient for detecting the temperature of the water in the tank body 1.

[0108] In some embodiments of the present application, the axis of the temperature detector 4 is parallel to the axis of the bile body 1 .

[0109] Specifically, by keeping the axis of the temperature detector 4 parallel to the axis of the gallbladder body 1 , it is helpful to accurately detect the water temperature at the same height in the gallbladder body 1 .

[0110] Combination Figure 6 As shown, in some embodiments of the present application, the ceramic heating core 22 includes a first ceramic connection block 222, a second ceramic connection block 223, an insulating core 224, a pull rod 225 and an electric heating wire.

[0111] The first ceramic connection block 222 is located at the second end 212 of the outer sleeve 21, and a first through hole is provided on the first ceramic connection block 222;

[0112] The second ceramic connection block 223 is located at the first end 211 of the outer sleeve 21, and a second through hole is provided on the second ceramic connection block 223;

[0113] The insulating core 224 is located between the first ceramic connection block 222 and the second ceramic connection block 223 , and a third through hole is provided on the insulating core 224 ;

[0114] The pull rod 225 passes through the second through hole, the third through hole and the first through hole in sequence to connect the second ceramic connection block 223, the insulating core 224 and the first ceramic connection block 222 together;

[0115] The electric heating wire is arranged on the insulating core 224 .

[0116] Specifically, the ceramic heating core 22 is assembled from a first ceramic connecting block 222, a second ceramic connecting block 223, an insulating core 224, a pull rod 225 and an electric heating wire, which can reduce processing difficulty and manufacturing cost.

[0117] Exemplarily, the first ceramic connecting block 222 and the second ceramic connecting block 223 are both solid structures, with a first through hole and a second through hole respectively provided in the middle to facilitate the passage of the pull rod 225, while the middle of the insulating core 224 is a hollow structure, which is conducive to reducing weight.

[0118] Combination Figure 6 As shown, in some embodiments of the present application, a positioning groove 221 is formed at the end of the second ceramic connection block 223 .

[0119] Specifically, the pull rod 225 can effectively improve the structural strength of the insulating core 224. During transportation, since the insulating core 224 is effectively supported by the pull rod 225 inside, the collision between the insulating core 224 and the outer sleeve 21 caused by vibration can be effectively reduced, thereby improving reliability.

[0120] In another embodiment, the pull rod 225 is made of stainless steel.

[0121] In some embodiments, an interface terminal is disposed on the second ceramic connection block 223 , and the interface terminal is connected to the heating wire through a lead wire.

[0122] In some embodiments of the present application, the insulating core 224 includes a plurality of sub-cores 2241 .

[0123] Specifically, the plurality of sub-cores 2241 are connected together by the pull rod 225, thereby reducing the difficulty of processing the ceramic heating core 22 and improving the reliability of the electric water heater.

[0124] Specifically, the sub-core 2241 is in a lotus root joint shape, and a groove for accommodating the electric heating wire is provided on the surface of the sub-core 2241. The electric heating wire is embedded in the groove.

[0125] In a second aspect, an embodiment of the present disclosure provides an electric water heater, comprising an inner tank and an outer shell, wherein the inner tank is disposed in the outer shell, and the inner tank adopts an inner tank assembly for an electric water heater as described in any one of the embodiments of the first aspect above.

[0126] Since the inner tank assembly for an electric water heater includes any one of the above embodiments, it has all the beneficial effects of the inner tank assembly for an electric water heater in any one of the above embodiments, which will not be described in detail here.

[0127] In the description of this specification, the description with reference to the terms "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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0128] 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. An inner tank assembly for an electric water heater, characterized in that: include: A gallbladder body, wherein a mounting opening is formed on the gallbladder body; A ceramic electric heating module, comprising an outer sleeve and a ceramic heating core, wherein the first end of the outer sleeve is a closed structure, the second end of the outer sleeve is an open structure, and the ceramic heating core is arranged in the outer sleeve; the outer sleeve extends into the gallbladder body through the installation port, and the outer sleeve is sealed and connected to the installation port; A magnesium rod is disposed in the gallbladder body and connected to the first end of the outer sleeve.

2. The inner tank assembly for an electric water heater according to claim 1, characterized in that: The magnesium rod is fixedly connected to the outer sleeve or detachably connected to the outer sleeve.

3. The inner tank assembly for an electric water heater according to claim 2, characterized in that: The axis of the magnesium rod coincides with the axis of the outer sleeve.

4. The inner tank assembly for an electric water heater according to claim 1, characterized in that: The gallbladder body is arranged horizontally or vertically; When the gallbladder body is arranged transversely, the outer sleeve is arranged transversely inside the gallbladder body, and the outer sleeve extends obliquely downward from the mounting opening toward the interior of the gallbladder body.

5. The inner tank assembly for an electric water heater according to claim 4, characterized in that: The ceramic electric heating module also includes: A first flange, which is sleeved on the outer side of the second end of the outer sleeve and fixedly connected to the outer sleeve, and the first flange is perpendicular to the axis of the gallbladder body; The angle between the axis of the outer sleeve and the axis of the gallbladder body is α, 0°<α≤9°.

6. The inner tank assembly for an electric water heater according to claim 5, characterized in that: A positioning groove is formed on the end surface of the ceramic heating core; the ceramic electric heating module also includes: A connecting piece, the connecting piece includes a clamping portion and a connecting portion connected to each other; wherein the clamping portion abuts against the positioning groove, the connecting portion is fixedly connected to the first flange, and the connecting piece is configured to fix the ceramic heating core and the first flange together.

7. The inner tank assembly for an electric water heater according to claim 5, characterized in that: The liner body includes an inner liner barrel and a head, and the mounting port is located at the center of the head; a second flange is formed on the head at the edge of the mounting port, and the first flange and the second flange are fixedly connected by fasteners.

8. The inner tank assembly for an electric water heater according to claim 7, characterized in that: The inner tank assembly for the electric water heater also includes: A temperature detector is disposed on the sealing head and is configured to detect the temperature of water in the bile body.

9. The inner tank assembly for an electric water heater according to claim 8, characterized in that: The axis of the temperature detector is kept parallel to the axis of the body.

10. An electric water heater, comprising an inner tank and an outer shell, wherein the inner tank is arranged in the outer shell, characterized in that: The inner tank adopts the inner tank assembly for an electric water heater as described in any one of claims 1 to 9 above.

Images