Inner container structure of water heater and water heater

Abstract

The water heater inner container structure comprises an inner container, a mounting flange and an anti-corrosion layer, the inner container comprises an inner container body and a bent flange arranged on the inner container body, the inner container body is provided with a mounting hole, and the bent flange surrounds the mounting hole, extends from the mounting hole and deviates from the mounting hole; the mounting flange is arranged in the inner container and surrounds the bent turnup, a gap is formed between the mounting flange and the end face of the bent turnup, the anti-corrosion layer covers the inner wall face of the inner container body and covers at least part of the bent turnup and the mounting flange from the inner wall face of the inner container body, and the anti-corrosion layer is clamped into the gap. At least part of the mounting flange, the bent turnup and the inner wall face of the inner container body are covered with the anti-corrosion layer, the inner container structure of the water heater can be effectively prevented from being rusted, the gap is formed between the bent turnup and the mounting flange, the anti-corrosion layer is clamped into the gap, thermal stress shrinkage of the anti-corrosion layer is limited, stripping of the anti-corrosion layer is avoided, and reliability is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of water heaters, and in particular to a water heater inner tank structure and a water heater. Background Art

[0002] The water heater has an inner tank, which includes a mounting hole and a flange surrounding the mounting hole. The flange is used to seal the mounting hole in cooperation with other components. In order to improve the anti-corrosion performance of the inner tank, an anti-corrosion material is coated on the inside of the inner tank to form an anti-corrosion layer. The anti-corrosion layer extends to the flange, but under the action of alternating hot and cold temperatures of the water heater and the pulse action of the water valve, the anti-corrosion layer corresponding to the flange is prone to peeling off, which reduces the anti-corrosion performance of the corresponding position. Utility Model Content

[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a water heater inner tank structure.

[0004] To achieve the above-mentioned purpose, the present application discloses a water heater inner tank structure, which includes:

[0005] The liner comprises an liner body and a bent flange provided on the liner body, the liner body is provided with a mounting hole, the bent flange surrounds the mounting hole and extends from the mounting hole and away from the mounting hole;

[0006] A mounting flange, the mounting flange being disposed on the inner container and surrounding the bent flange, with a gap being formed between the mounting flange and an end surface of the bent flange; and

[0007] The anti-corrosion layer covers the inner wall surface of the liner body and covers at least part of the bent flange and the mounting flange from the inner wall surface of the liner body, and the anti-corrosion layer is stuck in the gap.

[0008] In some embodiments of the present application, the mounting flange includes a first flange portion, and along the axial direction of the mounting hole, the first flange portion is away from the inner liner body relative to the bent flange so that a height difference is formed between the first flange portion and the bent flange, and the anti-corrosion layer covers at least a portion of the first flange portion.

[0009] In some embodiments of the present application, along the axial direction of the mounting hole, the first flange portion is 3 mm to 8 mm higher than the bent flange.

[0010] In some embodiments of the present application, the mounting flange also includes a second flange portion and a third flange portion, the second flange portion extends from the first flange portion from one side of the bending flange to the other side of the bending flange, the gap is formed between the second flange portion and the end face of the bending flange, and the third flange portion is arranged on the second flange portion and is clamped on the other side of the bending flange.

[0011] In some embodiments of the present application, the bent flange includes an abutment portion, and the anti-corrosion layer includes a first area and a second area, the first area corresponds to the first flange portion, and the second area corresponds to the abutment portion, the second area is suitable for abutting a sealing ring, and along the axial direction of the mounting hole, the first area is away from the inner liner body relative to the second area, so that a height difference is formed between the first area and the second area.

[0012] In some embodiments of the present application, the abutting portion and the second region are respectively planar structures.

[0013] In some embodiments of the present application, the abutment portion and the second region are respectively perpendicular to the axial direction of the mounting hole.

[0014] In some embodiments of the present application, the mounting flange is fixed to the liner body and / or the bent flange by welding.

[0015] In some embodiments of the present application, the width of the gap is 1 mm to 2.5 mm.

[0016] The present application also discloses a water heater, which includes a mounting plate, a sealing ring and the above-mentioned water heater inner tank structure. The mounting plate is suitable for installing working parts, and the mounting plate and the mounting flange are connected to press the sealing ring between the mounting plate and the bent flange.

[0017] The technical solution of the present application can effectively prevent the inner tank structure of the water heater from rusting by covering at least part of the mounting flange, the bent flange and the inner wall surface of the inner tank body with an anti-corrosion layer. A gap is formed between the bent flange and the mounting flange, and the anti-corrosion layer is stuck in the gap, which limits the thermal stress shrinkage of the anti-corrosion layer, prevents the anti-corrosion layer from peeling off, and effectively improves reliability.

[0018] Other advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application 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 only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the partial structure of the water heater in some embodiments (double tank structure);

[0021] Figure 2 for Figure 1 Exploded view of the structure shown;

[0022] Figure 3 for Figure 1 A cross-sectional view of the structure shown;

[0023] Figure 4 for Figure 3 The enlarged view marked as A in the figure (in order to reflect the position of the sealing ring, the sealing ring is not in a compressed and deformed state in the figure);

[0024] Figure 5 A cross-sectional view of an inner tank in some embodiments;

[0025] Figure 6 Schematic diagram of the cooperation between the inner tank and the mounting flange in some embodiments;

[0026] Figure 7 for Figure 6 The enlarged view marked as B in the figure;

[0027] Figure 8 FIG. 1 is a cross-sectional view of a mounting flange in some embodiments.

[0028] Description of Figure Numbers:

[0029] Inner liner 1000, inner liner body 1100, mounting hole 1110, bent flange 1200, abutment portion 1210, end face 1220, mounting flange 2000, first flange portion 2100, second flange portion 2200, gap 2210, third flange portion 2300, anti-corrosion layer 3000, first area 3100, second area 3200, mounting plate 4100, working part 4110, sealing ring 4200.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0035] The present application proposes a water heater inner tank structure, and the water heater inner tank structure will be described in detail below by taking a water heater (electric) as an example.

[0036] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, in some embodiments of the present application, the inner tank structure of the water heater includes an inner tank 1000, a mounting flange 2000 and an anti-corrosion layer 3000, wherein the inner tank 1000 includes an inner tank body 1100 and a bending flange 1200, the bending flange 1200 is arranged on the inner tank body 1100, the inner tank body 1100 is provided with a mounting hole 1110, and the bending flange 1200 surrounds the mounting hole 1110, and the bending flange 1200 needs to extend from the mounting hole 1110 toward a direction away from the mounting hole 1110. The mounting flange 2000 is disposed on the inner liner 1000 and is configured to surround the bending flange 1200. A gap 2210 is formed between the mounting flange 2000 and the end face 1220 of the bending flange 1200. The anti-corrosion layer 3000 is disposed on the inner wall surface of the inner liner body 1100 to cover the inner wall surface of the inner liner body 1100. The anti-corrosion layer 3000 also needs to cover the bending flange 1200 and at least part of the mounting flange 2000 from the inner wall surface of the inner liner body 1100, and the anti-corrosion layer 3000 is inserted into the gap 2210.

[0037] By covering at least part of the mounting flange 2000, the bent flange 1200 and the inner wall surface of the inner tank body 1100 with the anti-corrosion layer 3000, the inner tank structure of the water heater can be effectively prevented from rusting. A gap 2210 is formed between the bent flange 1200 and the mounting flange 2000, and the anti-corrosion layer 3000 is inserted into the gap 2210, which limits the thermal stress shrinkage of the anti-corrosion layer 3000, prevents the anti-corrosion layer 3000 from peeling off, and effectively improves reliability.

[0038] Specifically, the inner tank 1000 is used to store a certain amount of water and heat the water. When the water heater is connected to an external water source, such as municipal water, the municipal water flows into the inner tank 1000 and is stored, and the heater of the water heater heats the water in the inner tank 1000, so that the water in the inner tank 1000 is heated and becomes hot water. When the user needs to use hot water, the hot water in the inner tank 1000 can be released.

[0039] The liner 1000 includes a liner body 1100 and a bending flange 1200. The bending flange 1200 surrounds the mounting hole 1110 of the liner body 1100. The mounting hole 1110 is used for the working component 4110 to extend into the interior of the liner 1000 (see below for details). The bending flange 1200 is used to cooperate with other components to form a seal. It can be understood that the liner body 1100 and the bending flange 1200 can be an integrally formed structure, and the two components can be connected by welding or other means. Of course, in order to avoid water seepage between the liner body 1100 and the bending flange 1200, the liner body 1100 and the bending flange 1200 generally constitute an integrally formed structure. For example, the mounting hole 1110 is cut out on the liner body 1100, and the periphery of the mounting hole 1110 is bent to form the bending flange 1200. The bent flange 1200 needs to extend from the mounting hole 1110 and away from the mounting hole 1110 to a certain extent, that is, with the mounting hole 1110 as the center, the bent flange 1200 extends toward the surrounding areas of the mounting hole 1110. This can avoid occupying the space of the mounting hole 1110 and can also cooperate with other components to achieve sealing.

[0040] In this embodiment, the installation of other components is achieved by setting a mounting flange 2000 in cooperation with the bending flange 1200. The mounting flange 2000 is set on the inner liner 1000, that is, the mounting flange 2000 is fixed to the inner liner 1000. It can be understood that the mounting flange 2000 can be fixed to the inner liner body 1100, the bending flange 1200, or the inner liner body 1100 and the bending flange 1200 at the same time. The mounting flange 2000 is used to cooperate with other components (such as the mounting plate 4100). The mounting flange 2000 lays the foundation for sealing the mounting hole 1110. Generally speaking, the mounting flange 2000 is also made of metal materials. Of course, other materials can also be used. In order to meet the installation requirements, the mounting flange 2000 can be designed to be an irregular shape.

[0041] The water heater also includes a sealing ring 4200 and a mounting plate 4100. A working component 4110 is arranged on the mounting plate 4100. The so-called working component 4110 is an essential component for ensuring the normal operation of the water heater. For example, the working component 4110 includes but is not limited to a heater, a thermometer, a magnesium rod, a water inlet pipe, a water outlet pipe, a water inlet joint, a water outlet joint and / or a sewage joint. The working component 4110 is installed on the mounting plate 4100, and then the mounting plate 4100 and the working component 4110 are assembled into a module and installed in the mounting hole 1110. The sealing ring 4200 needs to be arranged between the mounting plate 4100 and the bent flange 1200. In this way, by connecting and fastening the mounting plate 4100 and the mounting flange 2000, the sealing ring 4200 can be compressed to form a seal.

[0042] It is understandable that in order to improve the structural strength, the material of the liner 1000 is generally selected to be a metal material. Since the liner 1000 is a water-related component, the liner 1000 is prone to corrosion when in contact with water for a long time. Therefore, in this embodiment, an anti-corrosion layer 3000 is provided, and the anti-corrosion layer 3000 covers the inner wall surface of the liner body 1100, and the anti-corrosion layer 3000 covers the bending flange 1200 and the mounting flange 200 from the inner wall surface of the liner body 1100. 0, that is, the surface of the inner tank body 1100 contacting water and the surface of the bending flange 1200 contacting water are covered by the anti-corrosion layer 3000. The setting of the anti-corrosion layer 3000 can isolate the inner tank 1000 from water. When the mounting plate 4100 is installed in the mounting hole 1110, the sealing ring 4200 abuts between the mounting plate 4100 and the part of the anti-corrosion layer 3000 corresponding to the bending flange 1200, effectively preventing the rust of the inner tank 1000. Through such a setting, the inner tank structure of the water heater combines the strength of the metal material and the anti-corrosion advantage of the anti-corrosion layer 3000, which can not only achieve a higher pressure-bearing performance, but also avoid rust.

[0043] It is understandable that there are multiple choices for the material of the anti-corrosion layer 3000 , as long as it can isolate the inner liner 1000 from water and provide anti-corrosion for the inner liner 1000 , for example, the anti-corrosion layer 3000 is made of a high molecular polymer.

[0044] When municipal water is introduced into the inner tank 1000, the temperature of the municipal water is relatively low and needs to be heated by a heater before it can be released for use by the user. When the user releases some hot water, new municipal water needs to be introduced and continued to be heated by the heater. In other words, the inner tank 1000 is in an alternating hot and cold environment, that is, the anti-corrosion layer 3000 is also in an alternating hot and cold environment. Generally speaking, the anti-corrosion layer 3000 is processed by rotational molding and bonded to the corresponding surface. In an alternating hot and cold environment, especially the part close to the bending flange 1200 is easy to peel off relative to the bending flange 1200, which will affect the anti-corrosion sealing effect of the inner tank 1000. In addition, the pulse effect caused by the switching of the water valve during the use of the water heater will also cause the anti-corrosion layer 3000 to be at risk of peeling. To this end, in the present embodiment, the anti-corrosion layer 3000 needs to cover at least a portion of the mounting flange 2000, that is, there is a bonding force between the anti-corrosion layer 3000 and the mounting flange 2000. Since the mounting flange 2000 is farther away from the hot water than the bending flange 1200, the mounting flange 2000 is relatively weaker in the alternating hot and cold effects than the bending flange 1200. In this way, the peeling between the anti-corrosion layer 3000 and the bending flange 1200 can be suppressed. When the anti-corrosion layer 3000 covers at least a portion of the bending flange 1200 and the mounting flange 2000, the anti-corrosion layer 3000 can be effectively prevented from peeling off. The layer 3000 is also inserted into the gap 2210 to form a snap-on structure. For example, when the anti-corrosion layer 3000 is applied by rotational molding, the anti-corrosion layer 3000 can penetrate into the gap 2210 from the bending flange 1200, and can uniformly cover at least a portion of the mounting flange 2000 from the gap 2210. After the anti-corrosion layer 3000 is cured, a snap-on structure can be formed, thereby mechanically limiting the thermal stress shrinkage of the anti-corrosion layer 3000 at this point, further avoiding peeling between the anti-corrosion layer 3000 and the bending flange 1200, and ensuring the reliability of the anti-corrosion seal. The width W of the gap 2210 is 1 mm to 2.5 mm. This prevents the gap 2210 from being too small, resulting in the anti-corrosion layer 3000 not being able to be normally inserted into the gap 2210 when applying the anti-corrosion layer 3000 (the air in the gap 2210 cannot be discharged normally), and also prevents the gap 2210 from being too large and occupying too much space. For example, the width W of the gap 2210 is 1 mm, 1.5 mm, 2 mm or 2.5 mm.

[0045] Combination Figure 4 , Figure 6 and Figure 7 As shown, in some embodiments of the present application, the mounting flange 2000 has a first flange portion 2100, and the first flange portion 2100 is farther away from the inner liner body 1100 relative to the bending flange 1200 along the axial direction of the mounting hole 1110, so that a height difference is formed between the bending flange 1200 and the first flange portion 2100, and the anti-corrosion layer 3000 needs to cover at least a portion of the first flange portion 2100, thereby further improving the bonding firmness of the anti-corrosion layer 3000.

[0046] Specifically, by designing the first flange portion 2100 to form a height difference with the bending flange 1200, the first flange portion 2100 and the bending flange 1200 cooperate to form a step-like structure. When the anti-corrosion layer 3000 is applied from the bending flange 120 to cover at least a portion of the first flange portion 2100 (at least a portion of the first flange portion 2100), after the anti-corrosion layer 3000 is cured, the anti-corrosion layer 3000 forms a corresponding structure that cooperates with the aforementioned step-like structure. Compared with the flat structure formed by the first flange portion 2100 and the bending flange 1200, the step-like structure is beneficial to further limit the thermal stress shrinkage of the anti-corrosion layer 3000, thereby further avoiding peeling of the anti-corrosion layer 3000.

[0047] In addition, as mentioned above, the mounting flange 2000 is provided for connection and installation of the mounting plate 4100 for sealing, and a height difference is designed between the first flange portion 2100 and the bending flange 1200. Then, when the mounting plate 4100 is connected to the mounting flange 2000 (for example, connected to the first flange portion 2100), sufficient space is ensured between the mounting plate 4100 and the bending flange 1200 to accommodate the sealing ring 4200.

[0048] Through a large number of tests, the first flange 2100 is 3mm to 8mm higher than the bending flange 1200 along the axial direction of the mounting hole 1110. This can not only form a step-like structure between the first flange 2100 and the bending flange 1200, but also avoid occupying too much external space due to being too far apart. For example, the first flange 2100 is 3mm, 4mm, 6mm or 8mm higher than the bending flange 1200 along the axial direction of the mounting hole 1110, which meets the needs of most product types. It can be understood that the height difference here is measured by the first flange 2100 and the bending flange 1200 along the axial direction of the mounting hole 1110, combined with Figure 3 and Figure 7 As shown, Figure 3 The orientation shown is for reference, the axial direction of the mounting hole 1110 is the left-right direction, the height difference between the right side of the bent flange 1200 and the right side of the first flange portion 2100 is H, and H is 3 mm to 8 mm.

[0049] Combination Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, in some embodiments of the present application, the mounting flange 2000 also has a second flange portion 2200 and a third flange portion 2300, the second flange portion 2200 is arranged between the first flange portion 2100 and the third flange portion 2300, and the entire mounting flange 2000 constitutes an annular structure, the first flange portion 2100 is located at the outer ring part of the annular structure, and the third flange portion 2300 is located at the inner ring part of the annular structure. The mounting flange 2000 and the inner liner 1000 can be assembled in the following manner: the mounting flange 2000 is an integrally formed part, for example, formed by integral stamping and punching, a flange surrounding the mounting hole 1110 is provided on the inner liner 1000, and then the mounting flange 2000 is sleeved onto the flange, at which time the third flange portion 2300 is close to (close to) the flange relative to the first flange portion 2100, and then the flange is bent to form a bent flange 1200. Due to the height difference between the first flange portion 2100 and the bent flange 1200, the second flange portion 2200 can be extended from one side of the bent flange 1200 to the other side of the bent flange 1200. For example Figure 7 In the orientation shown, the first flange portion 2100 is located on the right side of the bending flange 1200, the third flange portion 2300 is located on the left side of the bending flange 1200, and the second flange portion 2200 extends from the first flange portion 2100 from the right side of the bending flange 1200 to the left side of the bending flange 1200, and a gap 2210 is formed between the second flange portion 220 and the end face 1220 of the bending flange 1200. The structure of the bending flange 1200 realizes the clamping of the third flange portion 2300, so that the preliminary installation of the mounting flange 2000 can be formed.

[0050] Of course, the mounting flange 2000 can also be assembled to the inner liner 1000 in other ways. For example, the mounting flange 2000 is a split structure, the bending flange 1200 is first processed, and then the mounting flange 2000 is assembled to the inner liner 1000.

[0051] It is understandable that, after the mounting flange 2000 is assembled to the liner 1000, in addition to fixing the mounting flange 2000 by the clamping of the third flange portion 2300, the mounting flange 2000 can also be further fixed by welding, for example, the mounting flange 2000 is welded to the bending flange 1200, or the mounting flange 2000 is welded to the liner body 1100, or the mounting flange 2000 is welded to the bending flange 1200 and the liner body 1100 at the same time, so as to improve the installation firmness of the mounting flange 2000 to better support the installation of the mounting plate 4100. Since the bending flange 1200 alone may not be sufficient to support the installation of the mounting flange 2000, and the weight will also be fully applied to the bending flange 1200, which may cause the deformation of the bending flange 1200, the mounting flange 2000 is welded to the bending flange 1200 and the liner body 1100 at the same time to effectively achieve the installation of the mounting flange 2000.

[0052] As mentioned above, it is necessary to set the anti-corrosion layer 3000 to achieve anti-corrosion sealing. Therefore, after the mounting plate 4100 is installed, the sealing ring 4200 actually abuts between the anti-corrosion layer 3000 and the mounting plate 4100. Specifically, Figures 4 to 8As shown, the bent flange 1200 has a butt joint 1210, and the anti-corrosion layer 3000 has a first area 3100 and a second area 3200, the first flange portion 2100 corresponds to the first area 3100, and the butt joint 1210 corresponds to the second area 3200. The so-called correspondence means stacking together. When the mounting plate 4100 is installed to the inner tank 1000, the mounting plate 4100 is fastened to the mounting flange 2000, and the sealing ring 4200 is arranged between the second area 3200 and the mounting plate 4100. Since the second area 3200 corresponds to the butt joint 1210, during the fastening process of the mounting plate 4100, the butt joint 1210 and the mounting plate 4100 jointly clamp the sealing ring 4200, thereby forming a seal. Furthermore, in the present embodiment, the first area 3100 is further away from the liner body 1100 along the axial direction of the mounting hole 1110 than the second area 3200, so that a height difference is formed between the first area 3100 and the second area 3200, that is, a step-like structure is formed between the first area 3100 and the second area 3200. When the sealing ring 4200 is squeezed, the sealing ring 4200 is deformed, and the sealing ring 4200 gradually fills the space between the second area 3200 and the mounting plate 4100. The step-like structure formed by the first area 3100 and the second area 3200 can prevent the sealing ring 4200 from being excessively deformed and The sealing ring 4200 contacts the first area 3100 of the anti-corrosion layer 3000, thereby preventing the sealing ring 4200 from contacting the joining surface between the anti-corrosion layer 3000 and the mounting flange 2000 (the joining surface between the first area 3100 and the first flange part 2100), that is, the sealing ring 4200 is away from the edge of the anti-corrosion layer 3000. In this way, water in the inner liner 1000 is prevented from seeping through the sealing ring 4200 and the first area 3100 under the action of water pressure and seeping into the joining surface between the anti-corrosion layer 3000 and the metal (mounting flange 2000, bent flange 1200, inner liner body 1100) through the edge of the anti-corrosion layer 3000, thereby further preventing the anti-corrosion layer 3000 from peeling off.

[0053] Combination Figure 4 and Figure 5 As shown, in some embodiments of the present application, the abutment portion 1210 is a planar structure, and the second area 3200 is also a planar structure. During the assembly of the mounting disk 4100, the mounting disk 4100 and the abutment portion 1210 jointly clamp the sealing ring 4200. The sealing ring 4200 is deformed and filled between the second area 3200 and the mounting disk 4100. The sealing ring 4200 also exerts a force on the second area 3200. Since the abutment portion 1210 and the second area 3200 are respectively planar structures, the reaction force applied to the second area 3200 is perpendicular to the abutment portion 1210 and no component force is generated, thereby tightly pressing the second area 3200 to the abutment portion 1210, further reducing the risk of peeling of the anti-corrosion layer 3000.

[0054] Furthermore, combined with Figure 4 and Figure 5 As shown, in some embodiments of the present application, the abutment portion 1210 is designed to be perpendicular to the axial direction of the mounting hole 1110, and the second area 3200 is also perpendicular to the axial direction of the mounting hole 1110. Through such a configuration, in the process of connecting the mounting disk 4100, the mounting disk 4100 moves roughly along the axial direction of the mounting hole 1110 toward the bent flange 1200, thereby gradually generating a pressure perpendicular to the abutment portion 1210 and pressing the sealing ring 4200, thereby avoiding abnormal deformation of the sealing ring 4200.

[0055] The second aspect of the present application discloses a water heater, which includes a sealing ring 4200, a mounting plate 4100 and the above-mentioned water heater inner tank structure. The working component 4110 is arranged on the mounting plate 4100 to form a module. The mounting plate 4100 is connected to the mounting flange 2000 of the water heater inner tank structure, so that the sealing ring 4200 is clamped between the bent flange 1200 and the mounting plate 4100 to form a seal.

[0056] The inner tank structure of the water heater includes an inner tank 1000, a mounting flange 2000 and an anti-corrosion layer 3000, wherein the inner tank 1000 includes an inner tank body 1100 and a bending flange 1200, the bending flange 1200 is arranged on the inner tank body 1100, the inner tank body 1100 is provided with a mounting hole 1110, and the bending flange 1200 surrounds the mounting hole 1110, and the bending flange 1200 needs to extend from the mounting hole 1110 toward the direction away from the mounting hole 1110, and the mounting flange 200 0 is arranged on the inner liner 1000 and is configured to surround the bending flange 1200, a gap 2210 is formed between the mounting flange 2000 and the end face 1220 of the bending flange 1200, the anti-corrosion layer 3000 is arranged on the inner wall surface of the inner liner body 1100 to cover the inner wall surface of the inner liner body 1100, the anti-corrosion layer 3000 also needs to cover the bending flange 1200 and at least part of the mounting flange 2000 from the inner wall surface of the inner liner body 1100, and the anti-corrosion layer 3000 is stuck in the gap 2210.

[0057] By covering at least part of the mounting flange 2000, the bent flange 1200 and the inner wall surface of the inner tank body 1100 with the anti-corrosion layer 3000, the inner tank structure of the water heater can be effectively prevented from rusting. A gap 2210 is formed between the bent flange 1200 and the mounting flange 2000, and the anti-corrosion layer 3000 is inserted into the gap 2210, which limits the thermal stress shrinkage of the anti-corrosion layer 3000, prevents the anti-corrosion layer 3000 from peeling off, and effectively improves reliability.

[0058] It can be understood that the water heater includes the water heater inner tank structure of the above embodiment, and the water heater inner tank structure adopts the technical solution of the above embodiment, so it at least has the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0059] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made based on the concept of the present application and the contents of the present application description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A water heater inner tank structure, characterized in that: include: The liner comprises an liner body and a bent flange provided on the liner body, the liner body is provided with a mounting hole, the bent flange surrounds the mounting hole and extends from the mounting hole and away from the mounting hole; A mounting flange, the mounting flange being disposed on the inner container and surrounding the bent flange, with a gap being formed between the mounting flange and an end surface of the bent flange; and The anti-corrosion layer covers the inner wall surface of the liner body and covers at least part of the bent flange and the mounting flange from the inner wall surface of the liner body, and the anti-corrosion layer is stuck in the gap.

2. The water heater inner tank structure according to claim 1, characterized in that: The mounting flange includes a first flange portion. Along the axial direction of the mounting hole, the first flange portion is away from the inner tank body relative to the bent flange so that a height difference is formed between the first flange portion and the bent flange, and the anti-corrosion layer covers at least a portion of the first flange portion.

3. The water heater inner tank structure according to claim 2, characterized in that: Along the axial direction of the mounting hole, the first flange portion is 3 mm to 8 mm higher than the bent flange.

4. The water heater inner tank structure according to claim 2, characterized in that: The mounting flange also includes a second flange portion and a third flange portion, the second flange portion extends from the first flange portion from one side of the bending flange to the other side of the bending flange, the gap is formed between the second flange portion and the end face of the bending flange, and the third flange portion is arranged on the second flange portion and clamped on the other side of the bending flange.

5. The water heater inner tank structure according to claim 2, characterized in that: The bent flange includes an abutment portion, and the anti-corrosion layer includes a first area and a second area. The first area corresponds to the first flange portion, and the second area corresponds to the abutment portion. The second area is suitable for abutting a sealing ring. Along the axial direction of the mounting hole, the first area is away from the inner liner body relative to the second area, so that a height difference is formed between the first area and the second area.

6. The water heater inner tank structure according to claim 5, characterized in that: The abutting portion and the second region are respectively planar structures.

7. The water heater inner tank structure according to claim 6, characterized in that: The abutting portion and the second region are respectively perpendicular to the axial direction of the mounting hole.

8. The water heater inner tank structure according to claim 1, characterized in that: The mounting flange is fixedly welded to the liner body and / or the bent flange.

9. The water heater inner tank structure according to claim 1, characterized in that: The width of the gap is 1 mm to 2.5 mm.

10. A water heater, characterized in that: It comprises a mounting plate, a sealing ring and the water heater inner tank structure according to any one of claims 1 to 9, wherein the mounting plate is suitable for mounting working parts, and the mounting plate and the mounting flange are connected to press the sealing ring between the mounting plate and the bent flange.

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