Tank components and electric water heaters

Abstract

The present invention discloses an inner tank assembly and an electric water heater, wherein the inner tank assembly comprises: a tank body, the tank body is used to store water, and the tank body is provided with an internal threaded hole; a ceramic electric heating module, the ceramic electric heating module comprises an outer sleeve and a heating core, the first end of the outer sleeve is a closed structure, the outer periphery of the second end of the outer sleeve is provided with an external thread, and the heating core is arranged in the outer sleeve; wherein the outer sleeve extends into the tank body via the internal threaded hole, and the outer sleeve is threadedly connected to the internal threaded hole. The installation space of the ceramic heating tube is reduced to improve the space utilization rate.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to an inner tank component and an electric water heater. Background Art

[0002] At present, water heaters are household appliances commonly used in people's daily lives, and water heaters are divided into electric water heaters and gas water heaters according to different heating sources. Electric water heaters are widely used because of their easy installation. The electric water heater usually includes an inner tank and an electric heater, and the electric heater is arranged in the inner tank to heat the water in the inner tank through the electric heater.

[0003] In the prior art, the use of ceramic heating tube technology in electric water heaters has been gradually promoted. For example, Chinese patent application No. 201210208328.3 discloses a new type of spiral tube forced circulation electric heater, which uses a ceramic heating tube to heat the water in the water tank of the water heater. When the heater is assembled on the inner tank, it needs to be connected through the flange configured on the heater. However, due to the large size of the ceramic heating tube itself, connecting it to the inner tank through the flange will occupy a large space inside the water heater, resulting in low space utilization.

[0004] In view of this, how to design a water heater technology that reduces the installation space of the ceramic heating tube to improve the space utilization is the technical problem to be solved by the present invention. Summary of the invention

[0005] The present invention provides an inner tank assembly and an electric water heater, which can reduce the installation space of a ceramic heating tube and improve the space utilization rate.

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

[0007] In one aspect, the present invention provides a liner assembly, comprising:

[0008] A gall body, the gall body is used to store water, and the gall body is provided with an internal threaded hole;

[0009] A ceramic electric heating module, comprising an outer sleeve and a heating core, wherein the first end of the outer sleeve is a closed structure, the outer periphery of the second end of the outer sleeve is provided with an external thread, and the heating core is provided in the outer sleeve;

[0010] The outer sleeve extends into the bile body through the internal threaded hole, and the outer sleeve is threadedly connected to the internal threaded hole.

[0011] In one embodiment of the present application, a sealing ring is provided between the second end of the outer sleeve and the gallbladder body.

[0012] In one embodiment of the present application, the second end of the outer sleeve is provided with an outer flange, and the sealing ring is clamped between the outer flange and the gallbladder body.

[0013] In one embodiment of the present application, a protrusion is further provided on the gallbladder body, and the internal threaded hole is provided on the protrusion.

[0014] In one embodiment of the present application, a connecting seat is welded on the protruding portion, and the connecting seat is provided with the internal threaded hole.

[0015] In one embodiment of the present application, the gallbladder body is arranged horizontally, and the ceramic electric heating module is arranged at the lower part of the gallbladder body.

[0016] In one embodiment of the present application, the inner tank assembly includes two ceramic electric heating modules, one of which is arranged at the lower part of the tank body, and the other of which is arranged at the upper part of the tank body.

[0017] In one embodiment of the present application, the heating core includes a mounting seat, an insulating core, an electric heating wire and a pull rod, the mounting seat is provided with a first through hole, the insulating core is provided with a second through hole, the insulating core is arranged on the mounting seat, the pull rod passes through the first through hole and the second through hole and connects the mounting seat and the insulating core together, and the electric heating wire is arranged on the insulating core.

[0018] In one embodiment of the present application, the heating core includes a positioning block, the positioning block is provided with a third through hole, the pull rod passes through the first through hole, the second through hole and the third through hole in sequence, and the pull rod connects the mounting seat, the insulating core and the positioning block together in sequence.

[0019] The present invention further provides an electric water heater, comprising an outer shell, wherein the inner tank adopts the inner tank assembly, and the inner tank is arranged in the outer shell.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are: by arranging an internal threaded hole on the gallbladder body and correspondingly arranging an external thread on the outer sleeve of the ceramic electric heating module, the outer sleeve is directly fixed on the gallbladder body by threaded matching, and there is no need to use a flange for connection and fixation. In this way, the space occupied by the ceramic electric heating module in the connection is only limited to the pipe diameter size of the outer sleeve, avoiding the additional increase of the installation space due to the use of the flange, thereby reducing the installation space of the ceramic electric heating module and improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces 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 creative labor.

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of an inner liner assembly of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of an embodiment of an inner liner assembly of the present invention;

[0024] Figure 3 A cross-sectional view of an embodiment of an inner liner assembly of the present invention;

[0025] Figure 4 for Figure 3 A partial enlarged schematic diagram of the middle A area;

[0026] Figure 5 This is one of the structural schematic diagrams of a ceramic electric heating module in an embodiment of an electric water heater of the present invention;

[0027] Figure 6 for Figure 5 A cross-sectional view of the ceramic electric heating module;

[0028] Figure 7 This is a second structural schematic diagram of a ceramic electric heating module in an embodiment of an electric water heater of the present invention;

[0029] Figure 8 for Figure 7 One of the cross-sectional views of the ceramic electric heating module;

[0030] Fig. 9 for Figure 7 The second cross-sectional view of the ceramic electric heating module;

[0031] Fig.10 for Fig. 9 A partial enlarged schematic diagram of area B in the middle.

[0032] Reference numerals:

[0033] Bile 1;

[0034] A raised portion 11 and a connecting seat 12;

[0035] Ceramic electric heating module 2;

[0036] Outer sleeve 21, heating core 22, sealing ring 23;

[0037] Outer flange 211, curved surface 212;

[0038] A mounting seat 221, an insulating core 222, a pull rod 223, and a positioning block 224;

[0039] Tightening end 2231 and positioning surface 2241;

[0040] Temperature sensing module 3;

[0041] Heat conducting pipe 31, temperature sensing probe 32;

[0042] Water inlet pipe 101 and water outlet pipe 102. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0044] 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 limiting 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.

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0046] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] 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.

[0048] In the present invention, unless otherwise clearly stipulated 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 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 that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0050] 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.

[0051] An electric water heater usually includes a water tank, an electric heating component, an electronic control device and other components, wherein 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, and the electronic control device 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.

[0052] 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.

[0053] 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.

[0054] Among them, for the inner tank using a metal tank 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.

[0055] Since magnesium is the metal with the lowest potential in the electrochemical series and is physiologically non-toxic, it is ideal for making magnesium rods to protect the inner liner. The size of the magnesium rod is directly related to the length of time the inner liner is protected and the size of the protective effect. The larger the magnesium rod, the better the protective effect and the longer the protection time.

[0056] 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.

[0057] The electric heating component in the present invention uses a ceramic electric heating module to heat water, which is described below with reference to the accompanying drawings.

[0058] Embodiment 1, as Figure 1-Figure 6 As shown, this embodiment provides an inner liner assembly, including:

[0059] The gallbladder body 1 is used to store water and is provided with a mounting opening (not marked);

[0060] A ceramic electric heating module 2, comprising an outer sleeve 21 and a heating core 22, wherein a first end of the outer sleeve 21 is a closed structure, and the heating core 22 is disposed in the outer sleeve 21;

[0061] The outer sleeve 21 extends into the gallbladder body 1 through the installation opening, and the outer sleeve 21 is sealed and connected to the installation opening.

[0062] Specifically, the inner tank assembly holds water to be heated through the tank body 1, wherein the tank body 1 is provided with a water inlet pipe 101 and a water outlet pipe 102 extending into the interior of the tank body 1, cold water enters the tank body 1 through the water inlet pipe 101, and the heated hot water is output from the water outlet pipe 102.

[0063] In order to heat the water in the bile body 1 , a ceramic electric heating module 2 is provided in the bile body 1 . The ceramic electric heating module 2 uses a heating core 22 to generate heat, and the heating core 22 is covered with an outer sleeve 21 to protect the heating core 22 .

[0064] The outer sleeve 21 is made of heat-conducting materials such as copper and aluminum to protect the heating core 22 while having good thermal conductivity, thereby ensuring that the heat generated by the heating core 22 is quickly transferred to the water in the gallbladder body 1 through the outer sleeve 21.

[0065] In order to facilitate the installation of the outer sleeve 21 and reduce the space occupied by the installation of the outer sleeve 21, an external thread (unmarked) can be provided on the outer periphery of the second end of the outer sleeve 21, and the installation port is formed with an internal thread (unmarked), and the outer sleeve 21 is threadedly connected to the installation port.

[0066] Specifically, the outer sleeve 21 is threadedly connected to the gallbladder body 1. When the operator assembles the outer sleeve 21 in the factory, the operator first inserts the outer sleeve 21 into the installation port, and after the outer thread of the outer sleeve 21 contacts the inner thread of the installation port, the outer sleeve 21 can be threadedly connected to the gallbladder body 1 by rotating the outer sleeve 21.

[0067] By adopting a threaded fitting method, the outer sleeve 21 can be directly fixed on the gallbladder body 1, and there is no need to use a flange for connection and fixation. In this way, the space occupied by the ceramic electric heating module 2 in the connection is limited to the pipe diameter size of the outer sleeve 21, avoiding the additional increase of the installation space due to the use of a flange, thereby reducing the installation space of the ceramic electric heating module 2 to improve space utilization.

[0068] In a preferred embodiment, in order to improve the connection reliability and connection strength between the outer sleeve 21 and the gallbladder body 1, for the internal thread formed on the gallbladder body 1, a connecting seat 12 can be welded on the gallbladder body 1, and an internal thread hole is provided on the connecting seat 12.

[0069] Specifically, an internal threaded hole is formed on the connecting seat 12, and the connecting seat 12 is fixedly installed on the gallbladder body 1 by welding. In this way, a sufficiently long internal threaded hole can be formed on the gallbladder body 1 through the connecting seat 12 to meet the threaded connection requirements of the outer sleeve 21. At the same time, the connecting seat 12 is fixed to the gallbladder body 1 by welding, so that there is sufficient connection strength between the connecting seat 12 and the gallbladder body 1.

[0070] When the outer sleeve 21 needs to be assembled, the first end of the outer sleeve 21 extends into the internal threaded hole on the connecting seat 12, and then the second end of the outer sleeve 21 cooperates with the internal threaded hole through the external thread to achieve threaded installation of the outer sleeve 21 on the connecting seat 12.

[0071] In one embodiment, a protrusion 11 is provided at one end of the gallbladder body 1 , and the mounting opening is provided on the protrusion 11 .

[0072] Specifically, in order to facilitate the installation of the ceramic electric heating module 2, a protrusion 11 is provided at the end of the gallbladder body 1, and the protrusion 11 can be formed on the end cap of the gallbladder body 1 by stamping or the like. Generally, the end cap of the gallbladder body 1 arranged transversely is an arc surface, and since the protrusion 11 protrudes from the arc-shaped end face of the end cap of the gallbladder body 1, a relatively flat installation end face can be formed on the protrusion 11. At the same time, the protrusion 11 is opened to form the installation opening to install the connecting seat 12, so as to facilitate the insertion of the connecting seat 12 into the installation opening and welding, so that the connecting seat 12 is installed and fixed on the protrusion 11 of the gallbladder body 1.

[0073] In one embodiment, in order to improve the sealing performance of the connection between the outer sleeve 21 and the gallbladder body 1 , a sealing ring 23 is provided between the second end of the outer sleeve 21 and the connecting seat 12 .

[0074] Specifically, the sealing ring 23 seals the connection portion formed between the outer sleeve 21 and the connection seat 12, thereby improving the overall sealing performance.

[0075] During assembly, the sealing ring 23 is first put on the outside of the outer sleeve 21, and then the outer sleeve 21 is inserted into the connecting seat 12. After the external thread of the outer sleeve 21 contacts the internal thread on the opening of the connecting seat 12, the outer sleeve 21 is rotated so that the outer sleeve 21 is threadedly connected to the gallbladder body 1.

[0076] The second end of the outer sleeve 21 is provided with an outer flange 211, and the sealing ring 23 is sandwiched between the outer flange 211 and the connecting seat 12. The sealing ring 23 is sandwiched between the outer flange 211 and the connecting seat 12, so that the connecting portion formed between the outer sleeve 21 and the connecting seat 12 is sealed by the sealing ring 23.

[0077] During assembly, as the outer sleeve 21 is gradually tightened, the sealing ring 23 is squeezed between the outer flange 211 and the connecting seat 12, and finally the ceramic electric heating module 2 is assembled to the gallbladder body 1. At the same time, the sealing ring 23 is clamped between the outer flange 211 and the connecting seat 12, thereby meeting the requirements of the sealed connection.

[0078] In some embodiments, in order to realize that the outer sleeve 21 extends upwardly and obliquely toward the inside of the gallbladder body 1, at least two structural designs can be adopted to realize it.

[0079] Method 1 is to realize inclined installation of the outer sleeve 21 by designing the installation end surface formed by the protrusion 11 as an inclined surface, that is, the installation end surface is arranged inclined relative to the horizontal center line of the gallbladder body 1.

[0080] Specifically, when installing the ceramic electric heating module 2, the ceramic electric heating module 2 is installed obliquely by means of the obliquely arranged installation end face, so that the ceramic electric heating module 2 extends obliquely upward along the tax invoice center line of the gallbladder body 1 into the gallbladder body 1. As for the installation end face, during the molding process of the gallbladder body 1, the installation end face formed by the raised portion 11 is formed into a certain inclination angle, so that when installing the ceramic electric heating module 2, it is only necessary to install and fix the ceramic electric heating module 2 on the raised portion 11, so that the ceramic electric heating module 2 can be arranged obliquely upward inside the gallbladder body 1.

[0081] Method 2: Figure 7 As shown, the second end of the outer sleeve 21 is provided with an outer flange 211 , and an angle is formed between the center line of the outer sleeve 21 and the vertical line of the outer flange 211 .

[0082] Specifically, for the outer sleeve 21, when it is installed and fixed, the plane formed by the outer flange 211 is used as the installation reference plane, and the center line of the outer sleeve 21 itself will be arranged tilted relative to the plane formed by the outer flange 211, that is, an acute angle is formed between the center line of the outer sleeve 21 and the vertical line of the outer flange 211 to meet the requirement that the outer sleeve 21 extends tilted upward.

[0083] In a preferred embodiment, for the transversely arranged gallbladder body 1, the ceramic electric heating module 2 is also transversely arranged to extend into the gallbladder body 1 from the mounting opening configured on the end of the gallbladder body 1. In order to reduce the damage to the heating core caused by condensation of the air in the outer sleeve 21 due to the alternation of hot and cold air during use, for the ceramic electric heating module 2, the outer sleeve 21 is transversely arranged in the gallbladder body 1, and extends obliquely upward from the outside to the inside of the gallbladder body 1.

[0084] Specifically, in order to improve the heating efficiency and reliability, the ceramic electric heating module 2 is arranged in an inclined manner in the transversely arranged gallbladder body 1. In addition, the ceramic electric heating module 2 extends upwardly in the gallbladder body 1, so that the arrangement length of the ceramic electric heating module 2 in the gallbladder body 1 can be increased, thereby improving the heating efficiency to meet the requirements of the hot water output rate.

[0085] In addition, since the ceramic electric heating module 2 is installed on the gallbladder body 1 in an inclined upward extending manner, during use, when the moisture-containing air from the outside enters the outer sleeve 21 and is cooled to form condensed water, the condensed water will flow downward along the inner tube wall of the outer sleeve 21 under the action of gravity and finally flow out. In this way, it is possible to effectively reduce the damage to the high-temperature heating core 22 caused by water droplets formed in the outer sleeve 21 falling on it, thereby improving the reliability of use.

[0086] In actual use, the ceramic electric heating module 2 can be used in a horizontally placed gallbladder body 1 to meet the use requirement of heating the horizontally placed gallbladder body 1 using the ceramic electric heating module 2, thereby improving the use reliability.

[0087] In other embodiments, in order to effectively improve the heating efficiency to meet the requirement of hot water output rate, a plurality of ceramic electric heating modules 2 may be arranged in the tank body 1.

[0088] Specifically, a plurality of ceramic electric heating modules 2 are arranged in the tank body 1, so as to heat the water together through the plurality of ceramic electric heating modules 2 to meet the requirement of rapidly heating water and improving the hot water output rate. The plurality of ceramic electric heating modules are arranged in sequence from top to bottom, so as to effectively heat the water in the tank body 1 in the height direction.

[0089] In a certain embodiment, two ceramic electric heating modules 2 are arranged in the gallbladder body 1 , wherein one ceramic electric heating module 2 is arranged at the front side of the water outlet pipe 102 , and the other ceramic electric heating module 2 is arranged at the rear side of the water outlet pipe 102 .

[0090] Specifically, taking the use of two ceramic electric heating modules 2 as an example, one of the ceramic electric heating modules 2 is arranged above the tank body 1 and close to the upper end of the water outlet pipe 102, so that the water flowing into the water outlet pipe 102 can be directly heated, thereby satisfying the 3D heating function of the electric water heater.

[0091] At the same time, another ceramic electric heating module 2 is arranged at the bottom of the gallbladder body 1, and the ceramic electric heating module 2 at the bottom can heat the water at the bottom of the gallbladder body 1, so as to quickly heat the water at the bottom of the gallbladder body 1. After the water at the bottom of the gallbladder body 1 is heated, the water distributed up and down in the gallbladder body 1 can circulate by utilizing the principle of light specific gravity of hot water, so as to improve the efficiency of heating water.

[0092] In some embodiments, since the gallbladder body 1 is no longer provided with a flange for connection, in order to meet the installation requirements of the temperature sensor in the temperature controller, a mounting hole can be provided at one end of the gallbladder body 1. Correspondingly, the inner gallbladder assembly also includes: a temperature sensing module 3.

[0093] The temperature sensing module 3 includes a heat pipe 31 and a temperature controller. The heat pipe 31 is transversely arranged at one end of the gallbladder body 1 and is sealed and inserted into the gallbladder body 1 . The temperature sensing probe 32 of the temperature controller is located in the heat pipe 31 .

[0094] Specifically, since the ceramic electric heating module 2 is installed on the end cover of the gallbladder body 1 by means of a threaded connection, a mounting hole is opened on the end cover, and the heat pipe 31 is sealed and inserted into the mounting hole. The end of the heat pipe 31 located inside the gallbladder body 1 adopts a sealed design, and the temperature sensing probe 32 is installed inside the gallbladder body 1 through the heat pipe 31, and then the water temperature inside the gallbladder body 1 is detected by the temperature sensing probe 32.

[0095] Embodiment 2, based on the above embodiment 1, there are many ways for the specific structural form of the ceramic electric heating module 2, and in order to better meet the installation requirements of the ceramic electric heating module 2 installed on the transversely arranged gallbladder body 1, and at the same time, in order to meet the requirements of improving the anti-seismic ability of the ceramic electric heating module 2 during transportation. The following structural improvement design is performed on the ceramic electric heating module 2.

[0096] like Figure 7-Figure 8 As shown, the heating core 22 includes a mounting seat 221, an insulating core 222, an electric heating wire (not shown) and a pull rod 223. The mounting seat 221 is provided with a first through hole (not marked), the insulating core 222 is provided with a second through hole (not marked), the insulating core 222 is arranged on the mounting seat 221, the pull rod 223 passes through the first through hole and the second through hole and connects the mounting seat 221 and the insulating core 222 together, and the electric heating wire is arranged on the insulating core 222.

[0097] Specifically, the insulating core 222 in the heating core 22 can be sintered with ceramic material, while the mounting seat 221 can be made of heat-resistant insulating material, for example: ceramic material can also be used. The insulating core 222 and the mounting seat 221 are connected by a pull rod 223, and one end of the pull rod 223 can be provided with a tightening end 2231, and the tightening end 2231 abuts against the insulating core 222, and the other end of the pull rod 223 is threadedly connected to a locking nut, and the locking nut abuts against the outside of the mounting seat 221, so that the insulating core 222 and the mounting seat 221 are fixedly connected together. Then, the mounting seat 221 is connected and fixed to the outer sleeve 21, wherein the mounting seat 221 and the outer sleeve 21 can be connected by conventional means such as bolts, which will not be limited or repeated here.

[0098] On the one hand, the pull rod 223 can realize the connection between the insulating core 222 and the mounting seat 221. On the other hand, the pull rod 223 can play a role in structural reinforcement of the insulating core 222 inside the insulating core 222, thereby effectively improving the structural strength of the insulating core 222 suspended on the mounting seat 221. During transportation, since the insulating core 222 is effectively supported by the pull rod 223 inside, the collision between the insulating core 222 and the outer sleeve 21 caused by vibration can be effectively reduced, thereby improving reliability.

[0099] In a preferred embodiment, Fig. 9 and Fig.10 As shown, in order to better protect the insulating core 222 , the heating core includes a positioning block 224 , which is provided with a third through hole (not marked), and the pull rod 223 passes through the third through hole, the second through hole and the first through hole in sequence, and the tensioning end 2231 abuts against the positioning block 224 .

[0100] Specifically, a positioning block 224 is provided at the suspended end of the insulating core 222, and the tensioning end 2231 of the pull rod 223 abuts against the positioning block 224, so that the positioning block 224 will bear the pressure generated by the tensioning end 2231. As for the insulating core 222, since the contact area between the positioning block 224 and the insulating core 222 is large, the insulating core 222 can be prevented from being damaged by the tensioning end 2231 during the process of tightening the locking nut, thereby improving assembly reliability.

[0101] In addition, the pull rod 223 may also be provided with threaded sections at both ends, and the pull rod 223 is connected to the positioning block 224 by threaded connection.

[0102] Furthermore, in order to install the heating core 22 more accurately and reliably, the free end of the outer sleeve 21 can be used to further position and support the heating core 22 .

[0103] Specifically, the inner wall of the closed structure formed by the first end of the outer sleeve 21 is an arc surface 212 , and the positioning block 224 is provided with a positioning surface 2241 matching with the arc surface 212 , and the positioning surface 2241 abuts against the arc surface 212 .

[0104] Specifically, after the heating core 22 is assembled, the heating core 22 can be installed in the outer sleeve 21, and after the heating core 22 is assembled in place, the positioning surface 2241 on the positioning block 224 will contact the arc surface 212 formed by the free end of the outer sleeve 21.

[0105] Since the arc surface 212 itself has the function of automatic centering, the heating core 22 can be accurately installed in place. On the one hand, it can ensure that the space between the heating core 22 and the inner tube wall of the outer sleeve 21 is maintained within a precise range. On the other hand, the free end of the heating core 22 is positioned and supported by the arc surface 212 of the outer sleeve 21, which is more conducive to improving the earthquake resistance of the heating core 22.

[0106] As for the arc surface 212 , a hemispherical surface is preferably adopted, and the positioning surface 2241 is a chamfered edge of the positioning block 224 .

[0107] Embodiment 3: The present invention further provides an electric water heater, comprising an outer shell, wherein the inner tank adopts the inner tank assembly mentioned above, and the inner tank is arranged in the outer shell.

[0108] Specifically, the electric water heater provided by the present invention adopts the above-mentioned inner tank assembly, which is placed in the outer shell. Then, the water inlet pipe of the inner tank assembly is connected to the external water supply source (tap water pipe), and the heated water in the inner tank assembly is output from the water outlet pipe to the user's water use terminal (shower or faucet).

[0109] Compared with the prior art, the advantages and positive effects of the present invention are: by arranging a ceramic electric heating module that is tilted upward in the tank body, on the one hand, the ceramic electric heating module and the water in the tank body have a larger heat exchange area to meet the requirements of the hot water output rate; on the other hand, during use, since the outer sleeve is tilted upward, the condensed water formed in the outer sleeve can flow smoothly along its inner wall under the action of gravity to avoid the condensed water contacting the heating core, thereby improving the reliability of use and meeting the requirements of the water heater using a horizontal water tank and an inner tank assembly for heating, thereby increasing the scope of use of the inner tank assembly.

[0110] 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 aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by 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 liner assembly, It is characterized in that include: A gallbladder body, the gallbladder body is used to store water, an internal threaded hole is provided on the gallbladder body, and the gallbladder body is arranged horizontally; A ceramic electric heating module, comprising an outer sleeve and a heating core, wherein the first end of the outer sleeve is a closed structure, the outer periphery of the second end of the outer sleeve is provided with an external thread, and the heating core is provided in the outer sleeve; Wherein, the outer sleeve extends into the gallbladder body through the internal threaded hole, the outer sleeve is threadedly connected to the internal threaded hole, and the outer sleeve is transversely arranged in the gallbladder body; In addition, the ceramic electric heating module is installed on the gallbladder body in a manner of extending upwardly and tilted, and the outer sleeve is configured so that the condensed water will flow downward along the inner tube wall of the outer sleeve under the action of gravity and finally flow out.

2. The liner assembly according to claim 1, It is characterized in that A sealing ring is arranged between the second end of the outer sleeve and the gallbladder body.

3. The liner assembly according to claim 2, It is characterized in that The second end of the outer sleeve is provided with an outer flange, and the sealing ring is clamped between the outer flange and the gallbladder body.

4. The liner assembly according to claim 1, It is characterized in that The gallbladder body is also provided with a protruding portion, and the internal threaded hole is provided on the protruding portion.

5. The liner assembly according to claim 4, It is characterized in that A connecting seat is welded on the protruding portion, and the connecting seat is provided with the internal threaded hole.

6. The liner assembly according to claim 1, It is characterized in that The ceramic electric heating module is arranged at the lower part of the gallbladder body.

7. The liner assembly according to claim 6, It is characterized in that The inner tank assembly includes two ceramic electric heating modules, one of which is arranged at the lower part of the tank body, and the other is arranged at the upper part of the tank body.

8. The liner assembly according to any one of claims 1 to 7, It is characterized in that The heating core includes a mounting seat, an insulating core, an electric heating wire and a pull rod. The mounting seat is provided with a first through hole, the insulating core is provided with a second through hole, the insulating core is arranged on the mounting seat, the pull rod passes through the first through hole and the second through hole and connects the mounting seat and the insulating core together, and the electric heating wire is arranged on the insulating core.

9. The liner assembly according to claim 8, It is characterized in that The heating core comprises a positioning block, the positioning block is provided with a third through hole, the pull rod passes through the first through hole, the second through hole and the third through hole in sequence, and the pull rod connects the mounting seat, the insulating core and the positioning block together in sequence.

10. An electric water heater, comprising a housing, It is characterized in that The inner liner adopts the inner liner assembly as described in any one of claims 1 to 9, and the inner liner is arranged in the outer shell.

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