Inner container of water heater and electric water heater
By using a semi-lined liner made of plastic and combined with a support frame and annular flange structure, the problem of high manufacturing cost and easy corrosion of the water heater liner is solved, and cost reduction, pressure bearing capacity and enhanced sealing are achieved.
Patent Information
- Application Number
- CN202422271702.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing water heater inner liner and electric water heater inner liner are costly to be corrosive and rust and leaking.
A semi-inner liner made of plastic is provided with a support frame on the cylindrical section, which enhances the connection strength and sealing through the annular flange and clamp structure, reducing the difficulty of operation.
It reduces manufacturing costs, avoids corrosion and water leakage, improves pressure bearing capacity and service life, and ensures sealing and safety.
Smart Images
Figure CN223090830U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hot water supply equipment, in particular to a water heater inner tank and an electric water heater. Background Art
[0002] The water heater inner tank inside the water heater is one of the core components of the water heater, which is responsible for storing hot water and maintaining the water temperature. Specifically, the water heater inner tank is usually formed by a plurality of high-temperature resistant and corrosion-resistant semi-inner tanks jointly surrounded.
[0003] At present, the materials of the water heater inner tank are mostly metal materials. However, it is difficult to process and form the metal inner tank, and enamel treatment is required to reduce the possibility of inner tank corrosion, resulting in a high manufacturing cost of the water heater inner tank. Summary of the Utility Model
[0004] The first technical problem solved by the utility model is to provide a water heater inner tank, which effectively solves the problem of high manufacturing cost of the water heater inner tank in the related art.
[0005] The second technical problem solved by the utility model is to provide an electric water heater, which effectively solves the problem of high manufacturing cost of the electric water heater inner tank in the related art.
[0006] The above first technical problem is solved by the following technical solutions:
[0007] A water heater inner tank, comprising:
[0008] Two semi-inner tanks, the two semi-inner tanks are axially butted, and annular flanges are respectively provided at one ends of the two semi-inner tanks where they are butted;
[0009] The semi-inner tank is a plastic inner tank, and each semi-inner tank includes a cylindrical section and a curved surface section butted with one end of the cylindrical section. A support skeleton is provided on the cylindrical section, and the support skeleton is arranged on the inner side wall or the outer side wall or the side wall sandwich layer of the cylindrical section.
[0010] Compared with the background art, the water heater inner tank of the utility model has the following beneficial effects: by using plastic to make the semi-inner tank, the semi-inner tank will not be corroded by air and moisture, there is no problem of rusting and water leakage, and the cost can be reduced. Since the plastic inner tank has lower structural strength than the metal inner tank. Therefore, in order to improve the pressure-bearing capacity of the plastic inner tank of the water heater, a support skeleton is arranged on the cylindrical section, and the support skeleton is arranged on the inner side wall or the outer side wall or the side wall sandwich layer of the cylindrical section, so as to enhance the pressure-bearing capacity of the plastic inner tank. At the same time, by arranging annular flanges at one ends of the two semi-inner tanks where they are butted, the contact area and structural strength at the butting part of the two semi-inner tanks can be increased, and the operation difficulty when the two are butted can be reduced.
[0011] In one embodiment, the annular flanges respectively located on the two semi-inner liners are adhesively bonded or heat-melted and connected.
[0012] In one embodiment, it further includes a clamp. The clamp includes a plurality of sub-clamps. On one side of the plurality of sub-clamps facing the annular flange, there are clamping grooves. The plurality of sub-clamps are clamped outside the annular flanges of the two semi-inner liners through the clamping grooves, and the plurality of sub-clamps are tightly connected through fasteners.
[0013] In one embodiment, each sub-clamp includes a clamp body and connecting ears provided at both ends of the clamp body. There are connecting holes on the connecting ears. When the plurality of sub-clamps are butted, the connecting ears on the plurality of sub-clamps are butted in pairs and the fasteners are passed through the connecting holes to tightly connect the plurality of sub-clamps.
[0014] In one embodiment, on opposite sides of the clamp body, there are flanges extending towards the same side of the clamp body. A pair of flanges and the clamp body jointly define the clamping groove. The width of the clamping groove matches the sum of the thicknesses of a pair of annular flanges, and the depth of the clamping groove is less than the height of the annular flange.
[0015] In one embodiment, the support skeleton is a metal skeleton, and the metal skeleton is adapted to the shape of the cylindrical section and integrally injection-molded.
[0016] In one embodiment, the metal skeleton is one of a non-porous metal plate, a porous metal plate, or a metal mesh.
[0017] In one embodiment, on the arc section of each semi-inner liner, there are a first reinforcing rib and a second reinforcing rib. The first reinforcing rib extends along the meridional direction of the arc section to the connection part of the arc section and the cylindrical section, and the second reinforcing rib extends along the latitudinal direction of the arc section.
[0018] In one embodiment, on the arc section of one of the semi-inner liners, there is an installation hole for installing an electric heating tube.
[0019] The above second technical problem is solved by the following technical solution:
[0020] An electric water heater, comprising: the above-mentioned water heater inner liner.
[0021] Compared with the background art, the electric water heater of the present utility model has the following beneficial effects: By adopting a plastic semi-inner tank, the inner tank of the water heater will not be corroded by air and moisture, there are no problems of rusting and water leakage, and the cost can be reduced. Since the plastic inner tank has lower structural strength compared with the metal inner tank. Therefore, in order to improve the pressure-bearing capacity of the plastic inner tank of the water heater, a support skeleton is provided on the cylindrical section, and the support skeleton is arranged on the inner side wall or the outer side wall or the side wall sandwich of the cylindrical section, thereby enhancing the pressure-bearing capacity of the plastic inner tank. At the same time, by providing an annular flange at one end where the two semi-inner tanks are butted, the contact area and structural strength at the butting part of the two semi-inner tanks can be increased, and the operation difficulty when the two are butted can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0023] Figure 1 Structural schematic diagram of a water heater inner tank according to an embodiment of the present utility model;
[0024] Figure 2 is Figure 1 Exploded schematic diagram of the water heater inner tank shown;
[0025] Figure 3 Connection schematic diagram of a clamp and a pair of annular flanges in an embodiment of the present utility model;
[0026] Figure 4 Structural schematic diagram of a sub-clamp in an embodiment of the present utility model;
[0027] Figure 5 Partial structural schematic diagram of a semi-inner tank in an embodiment of the present utility model;
[0028] Figure 6 Structural schematic diagram of a holeless metal plate in an embodiment of the present utility model;
[0029] Figure 7 Structural schematic diagram of a metal mesh in an embodiment of the present utility model.
[0030] Explanation of reference numerals:
[0031] 1. Semi-inner liner; 101. Annular flange; 102. Cylindrical section; 103. Arc surface section; 1031. Mounting hole; 2. Clamp; 201. Sub-clamp; 2011. Clamp body; 2012. Connecting ear; 2013. Connecting hole; 2014. Flange; 3. Fastener; 301. Bolt; 302. Nut; 4. Metal skeleton; 401. Solid metal plate; 402. Perforated metal plate; 403. Metal mesh; 5. First reinforcing rib; 6. Second reinforcing rib. Detailed implementation mode
[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.
[0034] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.
[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mount", "connect", and "couple" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0036] In view of the problem of high manufacturing cost of the inner liner of the water heater in the related art, the present utility model provides a water heater inner liner and an electric water heater.
[0037] The following combines Figures 1 to 7 , to describe the embodiments of the present utility model.
[0038] According to an embodiment of the present utility model, on the one hand, as Figures 1 to 3 As shown, a water heater inner tank is provided, comprising: two half inner tanks 1 and a clamp 2.
[0039] Specifically, the two half-liners 1 are butt-jointed along the axial direction, the half-liners 1 are plastic, and the two half-liners 1 are provided with annular flanges 101 at the opposite ends thereof, and the annular flanges 101 located at the two half-liners 1 are bonded or hot-melt connected. By using plastic to make the half-liners 1, the half-liners 1 will not be corroded by air and moisture, and there will be no problems of rust or water leakage, and the cost can be reduced. The annular flange 101 can increase the contact area and structural strength of the two half-liners 1 at the butt joint, and reduce the difficulty of operation when the two are butt jointed.
[0040] In one embodiment, each half inner tank 1 includes a cylindrical section 102 and a curved section 103 connected to one end of the cylindrical section 102, wherein the cylindrical section 102 can provide good axial and radial strength to ensure that the water heater inner tank can effectively withstand the internal pressure; the curved section 103 can increase the structural stability of the water heater inner tank, and at the same time can reduce the installation space occupied by both ends of the water heater inner tank. Furthermore, the annular flange 101 is arranged around one end of the cylindrical section 102 away from the curved section 103, so that the operator can easily connect and fix the two half inner tanks 1, thereby improving the assembly efficiency.
[0041] In one embodiment, a support frame is provided on the cylindrical section 102, and the support frame is provided on the inner wall or the outer wall or in the side wall interlayer of the cylindrical section 102. It should be noted that the material of the support frame in this embodiment can be but is not limited to metal and fiber, as long as it can enhance the structural strength of the inner tank of the water heater and improve the pressure bearing capacity of the inner tank of the water heater. The utility model does not make specific limitations on this. The following is an explanation of a support frame made of metal:
[0042] In one embodiment, Figure 1 As shown, the supporting frame is a metal frame 4, which is adapted to the shape of the cylindrical section 102 and is integrally injection molded. The metal frame 4 can provide additional strength and rigidity to the cylindrical section 102, significantly enhance the overall structural strength of the water heater tank, improve the pressure bearing capacity and durability of the water heater tank, and extend the service life of the water heater tank. Secondly, the metal frame 4 and the cylindrical section 102 are integrally injection molded to ensure the stability of the connection between the two.
[0043] Specifically, Figure 1 , Figure 6 and Figure 7As shown, the metal skeleton 4 is one of a solid metal plate 401, a perforated metal plate 402, or a metal mesh 403. Compared with the solid metal plate 401, during the injection molding process, a part of the cylindrical section 102 extends and is fixed in the holes of the perforated metal plate or the metal mesh 403, enhancing the bonding force between the metal skeleton 4 and the cylindrical section 102 and ensuring the connection stability between the metal skeleton 4 and the water heater inner tank.
[0044] Similarly, if you want to improve the structural strength of the arc section 103, a strengthening structure can also be provided on the arc section 103. Exemplarily, as Figure 5 shown, a first reinforcing rib 5 and a second reinforcing rib 6 are provided on the arc section 103 of each half inner tank 1. The first reinforcing rib 5 extends along the meridional direction of the arc section 103 to the connection between the arc section 103 and the cylindrical section 102, and the second reinforcing rib 6 extends along the latitudinal direction of the arc section 103. It can be understood that in order to improve the convenience of setting the support structure on the arc end, the first reinforcing rib 5 and the second reinforcing rib 6 can be provided on the outer side wall of the arc section 103 of each half inner tank 1. It should be noted that the meridional and latitudinal directions of the arc section 103 in this embodiment are Figure 5 consistent with the directions shown in
[0045] In one embodiment, as Figure 1 , Figure 2 and Figure 5 shown, an installation hole 1031 is provided on the arc section 103 of one of the half inner tanks 1, and the installation hole 1031 is used to install the electric heating tube. With this arrangement, the convenience of installing and disassembling the electric heating tube is improved.
[0046] In one embodiment, to further improve the structural strength of the joint between the two half inner tanks 1, the water heater inner tank further includes a clamp 2. The clamp 2 includes a plurality of sub - clamps 201. A clamping groove is provided on one side of the plurality of sub - clamps 201 facing the annular flange 101. The plurality of sub - clamps 201 are clamped outside the annular flanges 101 of the two half inner tanks 1 through the clamping grooves, and the plurality of sub - clamps 201 are tightly connected through fasteners 3.
[0047] The water heater inner tank provided in this embodiment can increase the contact area and structural strength at the butt joint of the two half inner tanks 1 by providing an annular flange 101 at one end where the two half inner tanks 1 are butted, and reduce the operation difficulty when the two are butted. Further, the two annular flanges 101 are fixed by the clamp 2 and the fastener 3. On the one hand, it can make the water heater inner tank form a stable overall structure and ensure the sealing performance at the butt joint of the two half inner tanks 1; on the other hand, it can also make the installation and disassembly process of the water heater inner tank simple and fast. In addition, during the use of the water heater inner tank, as the internal temperature rises, the axial and radial forces acting on the water heater inner tank will become larger and larger. However, compared with other positions of the water heater inner tank, the connection strength at the butt joint of the two half inner tanks 1 is relatively poor. Therefore, by providing a slot on the clamp 2 that is adapted to the shape of the two annular flanges 101, it can increase the strength in both the axial and radial directions of the water heater inner tank at this position, ensuring the sealing performance and use safety of the water heater inner tank. It should be noted that the axial and radial directions in this embodiment are consistent with the directions shown in Figure 1 as shown.
[0048] Further, in order to improve the connection strength and sealing performance at the butt joint of the two half inner tanks 1, the two annular flanges 101 can be fixed first, and then locked and fixed by the clamp 2. Exemplarily, in a specific embodiment, a plurality of through holes are provided on both of the two annular flanges 101, and the plurality of through holes are arranged at intervals along the circumferential direction of the annular flange 101, and the two annular flanges 101 are fixedly connected by the fastener 3 passing through the through holes.
[0049] Even further, in order to improve the sealing performance at the butt joint of the two half inner tanks 1, a sealing ring can also be provided between the clamp 2 and the two annular flanges 101.
[0050] In addition, since a heating component for heating the water inside the water heater inner tank needs to be placed inside the water heater inner tank, the cooperation of the clamp 2 and the fastener 3 can enable the two half inner tanks 1 to be detachably connected, reduce the difficulty of assembling the heating component into the water heater inner tank, and improve the convenience of subsequent maintenance and replacement of the heating component.
[0051] In order to improve the convenience and accuracy during the connection process of the plurality of sub-clamps 201, in one embodiment, as Figure 4As shown, each sub-clamp 201 includes a clamp body 2011 and connecting ears 2012 provided at both ends of the clamp body 2011. The connecting ears 2012 extend in a direction away from the annular flange 101, and connecting holes 2013 are provided on the connecting ears 2012. When multiple sub-clamps 201 are butted, the connecting ears 2012 at the adjacent ends of two adjacent sub-clamps 201 can be connected together by a fastener 3. Specifically, the fastener 3 in this embodiment is a bolt 301 and a nut 302. When multiple sub-clamps 201 are butted, the connecting ears 2012 at the adjacent ends of two adjacent sub-clamps 201 abut against each other. The bolt 301 passes through the connecting holes 2013 of the two butted connecting ears 2012, and the two connecting ears 2012 are tightly connected by tightening the nut 302.
[0052] During the use of the water heater inner tank, as the heating component continuously heats the water inside it, the pressure inside the water heater inner tank will continuously increase, which means that the acting force on the side wall of the water heater inner tank will become larger and larger. Therefore, to avoid damage to the structure at the docking part of the two half inner tanks 1 caused by the above-mentioned acting force, in one embodiment, on opposite sides of the clamp body 2011, there are provided flanges 2014 extending towards the same side of the clamp body 2011. A pair of flanges 2014 and the clamp body 2011 together define a card slot. With such a setting, the two annular flanges 101 can always be fixed at a preset position, that is, the bearing capacity in the axial and radial directions of the water heater inner tank at this part can be increased, ensuring the sealing performance and use safety of the water heater inner tank.
[0053] Furthermore, as Figure 3 shown, making the width of the card slot match the sum of the thicknesses of a pair of annular flanges 101 can ensure the degree of fit between the baffle and the corresponding side surfaces of the pair of annular flanges 101, and ensure the limiting effect of the clamp 2 on the pair of annular flanges 101 in the axial direction of the water heater inner tank. Secondly, making the depth of the card slot less than the height of the annular flange 101 can ensure that the clamp body 2011 fits with the tops of the pair of annular flanges 101, and ensure the limiting effect of the clamp 2 on the pair of annular flanges 101 in the radial direction of the water heater inner tank. It should be noted that the axial and radial directions in this embodiment are consistent with the directions shown in Figure 1 the figure.
[0054] According to an embodiment of the present invention, on the other hand, there is also provided an electric water heater, including: the above-mentioned water heater inner tank.
[0055] Compared with a water heater inner tank with an integrated structure formed by welding installed inside, the electric water heater provided by the present utility model adopts a plastic inner tank, which can reduce costs and effectively reduce the possibility of water leakage in the water heater inner tank. Moreover, by arranging a support skeleton on the cylindrical section 102, the pressure-bearing capacity of the plastic inner tank is enhanced. At the same time, by arranging an annular flange 101 at one end where the two half inner tanks 1 are butted, the contact area and structural strength at the butt joint of the two half inner tanks 1 can be increased, and the operation difficulty when the two are butted can be reduced. It should be noted that the electric water heater in this embodiment can be, but is not limited to, electric water heaters such as storage electric water heaters, instant electric water heaters, fast heating electric water heaters, solar electric water heaters, and air energy electric water heaters.
[0056] In the specific content of the above specific implementation manner, each technical feature can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features does not exist in contradiction, it should be considered to be within the scope described in this specification.
[0057] The specific content of the above specific implementation manner only expresses several implementation manners of the present utility model, and its description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.
Claims
1. A water heater inner tank, characterized in that: Comprising: Two half inner liners (1), the two half inner liners (1) are axially butted, and annular flanges (101) are respectively provided at one end where the two half inner liners (1) are butted; The half inner liner (1) is a plastic inner liner, and each half inner liner (1) includes a cylindrical section (102) and a curved surface section (103) butted with one end of the cylindrical section (102). A support skeleton is provided on the cylindrical section (102), and the support skeleton is arranged on the inner side wall or the outer side wall or the side wall sandwich layer of the cylindrical section (102).
2. The water heater inner tank according to claim 1, characterized in that: The annular flanges (101) respectively located on the two half inner liners (1) are adhesively bonded or heat-melted and connected.
3. The water heater inner tank according to claim 1, wherein: It further includes a clamp (2), the clamp (2) includes a plurality of sub-clamps (201), a clamping groove is provided on one side of the plurality of sub-clamps (201) facing the annular flange (101), and the plurality of sub-clamps (201) are clamped outside the annular flanges (101) of the two half inner liners (1) through the clamping grooves, and the plurality of sub-clamps (201) are tightly connected through fasteners (3).
4. The water heater inner tank according to claim 3, characterized in that: Each sub-clamp (201) includes a clamp body (2011) and connecting ears (2012) provided at both ends of the clamp body (2011). Connecting holes (2013) are provided on the connecting ears (2012). When the plurality of sub-clamps (201) are butted, the connecting ears (2012) on the plurality of sub-clamps (201) are butted in pairs and the fasteners (3) are passed through the connecting holes (2013) to tightly connect the plurality of sub-clamps (201).
5. The water heater inner tank according to claim 4, characterized in that: On opposite sides of the clamp body (2011), there are respectively provided rib edges (2014) extending towards the same side of the clamp body (2011). A pair of rib edges (2014) and the clamp body (2011) jointly define the clamping groove. The width of the clamping groove matches the sum of the thicknesses of a pair of annular flanges (101), and the depth of the clamping groove is less than the height of the annular flange (101).
6. The water heater inner tank according to any one of claims 1 to 5, characterized in that: The support skeleton is a metal skeleton (4), and the metal skeleton (4) is adapted to the shape of the cylindrical section (102) and integrally injection-molded.
7. The water heater inner tank according to claim 6, wherein: The metal skeleton (4) is one of a solid metal plate (401), a porous metal plate (402), or a metal mesh (403).
8. The water heater inner tank according to any one of claims 1 to 5, characterized in that: On the curved surface section (103) of each half inner liner (1), there are provided a first reinforcing rib (5) and a second reinforcing rib (6). The first reinforcing rib (5) extends along the meridional direction of the curved surface section (103) to the connection part of the curved surface section (103) and the cylindrical section (102), and the second reinforcing rib (6) extends along the latitudinal direction of the curved surface section (103).
9. The water heater inner tank according to claim 8, wherein: An installation hole (1031) is provided on the curved surface section (103) of one of the half inner liners (1), and the installation hole (1031) is used for installing an electric heating tube.
10. An electric water heater, characterized in that: Comprising: The water heater inner liner according to any one of claims 1 to 9.