Water heater inner container and electric water heater
By setting rounded corners at the port of the connector insertion end of the electric water heater inner liner, the problems of poor enamel in the inner liner and difficult processing of the connector are solved, and better enamel effect and longer service life are achieved.
Patent Information
- Application Number
- CN202421077938.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The existing electric water heater inner vessels are prone to small gaps and poor enamel corrosion when treated with enamel, and the processing of the connector is difficult.
A water heater inner liner is designed, with rounded corners at the port of the insertion end of the connecting head, and both end faces of the connecting head are flat, avoiding bevel cutting.
The rounded corner design increases the gap between the inner wall of the inner liner and the insertion end, improves the enamel effect, avoids the risk of corrosion and water leakage, extends the service life of the inner liner, and simplifies the processing of the connector.
Smart Images
Figure CN222459815U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water heaters, in particular to a water heater inner tank and an electric water heater. Background Art
[0002] At present, electric water heaters are household appliances commonly used in people's daily lives. The electric water heater is usually provided with an inner tank inside, and the inner tank is used to store hot water. Usually, the inner tank needs to be enameled to prevent the inner tank from being corroded and to increase the service life of the inner tank. In addition, in order to facilitate the connection of the inner tank with the external water inlet pipe or water outlet pipe, a connector needs to be inserted into the inner tank, and the connector is welded and fixed to the inner tank, so that the inner tank is connected to the external water inlet pipe or water outlet pipe through the connector.
[0003] In the related art, after the connector is inserted into the inner pot, the insertion end of the connector extends into the inner pot, and the inner pot is arc-shaped, so that the gap between the inner wall of the inner pot and the insertion end of the connector is small, which makes it inconvenient to enamele between the inner wall of the inner pot and the insertion end, and it is easy to produce enamel accumulation between the inner wall of the inner pot and the insertion end, and the enamel is easy to crack in the subsequent high-temperature sintering process, making the inner pot prone to corrosion due to poor enameling, greatly reducing the service life of the inner pot and the entire electric water heater. In addition, in the related art, in order to facilitate the welding connection between the connector and the inner pot, the insertion end of the connector usually needs to be beveled, which increases the difficulty of processing and manufacturing the connector.
[0004] Therefore, there is an urgent need for a water heater inner tank and an electric water heater to solve the above problems. Utility Model Content
[0005] One purpose of the utility model is to provide a water heater tank to improve the effect of enameling between the inner wall of the tank and the insertion end, avoid corrosion of the tank, reduce the risk of water leakage in the tank, and increase the service life of the tank. The connector has a simple structure and is easy to process and manufacture.
[0006] Another object of the utility model is to provide an electric water heater to increase the service life of the electric water heater and facilitate processing and manufacturing.
[0007] To achieve this purpose, the utility model adopts the following technical solutions:
[0008] A water heater tank, comprising:
[0009] An inner liner, wherein a mounting hole is provided on a mounting wall of the inner liner; and
[0010] A connector is welded and fixed in the mounting hole, both end faces of the connector are planes, one end of the connector extending into the inner tank is an insertion end, and the outer wall of the port of the insertion end is chamfered.
[0011] By setting the outer wall rounded at the port of the insertion end, the gap between the inner wall of the inner liner and the insertion end is effectively increased, which makes it easier to enamele between the inner wall of the inner liner and the insertion end, improves the effect of enameling between the inner wall of the inner liner and the insertion end, avoids corrosion of the inner liner, reduces the risk of water leakage in the inner liner, and increases the service life of the inner liner. In addition, since both end faces of the connector are flat, there is no need to bevel the insertion end of the connector, so that the structure of the connector is simple and easy to process and manufacture.
[0012] As an optional solution, along the axial direction of the connector, the portion of the port of the insertion end closest to the inner wall of the liner is the connection port, and the outer wall at the connection port is provided with a rounded starting portion connected to the inner wall of the liner.
[0013] The above arrangement not only ensures the tightness of the connection between the connector and the mounting hole, but also avoids the insertion end from extending too long into the inner tank, further avoids the gap between the insertion end and the inner wall of the inner tank from being too small, and improves the effect of enameling between the inner wall of the inner tank and the insertion end.
[0014] As an optional solution, the inner wall at the port of the insertion end is also rounded.
[0015] By also providing a rounded corner on the inner wall at the port of the insertion end, it is also convenient to enamelled the interior of the insertion end, thereby ensuring the enamelled effect of the entire inner tank of the water heater.
[0016] As an optional solution, the radius of the inner wall rounded corner at the port of the insertion end is the same as the radius of the outer wall rounded corner at the port of the insertion end.
[0017] The above arrangement makes it easier to process the connector and also makes the connector more beautiful.
[0018] As an optional solution, the inner wall of the inner liner and the outer wall of the port at the insertion end are connected by welding inside the inner liner; or, the inner liner and the connector are connected by welding outside the inner liner.
[0019] As an optional solution, the inner wall of the inner liner and the outer wall of the port at the insertion end are connected by welding inside the inner liner, and the outer periphery of the welding layer formed between the inner wall of the inner liner and the outer wall of the port at the insertion end is arc-shaped.
[0020] By welding the inner part of the inner tank and making the outer periphery of the welding layer arc-shaped, the gap between the outer wall of the insertion end and the inner wall of the inner tank is filled, and even the corners of the gap are melted off during the welding process, making the inner wall of the inner tank and the insertion end smoother. When the welding operation is completed and the inner tank of the water heater is enameled, the enameling effect between the inner wall of the inner tank and the insertion end is further improved.
[0021] As an optional solution, the wall thickness of the connector is h, and the radius of the chamfered corners of the inner wall and the outer wall at the port of the insertion end are both r, then r / h=0.4-0.5.
[0022] The limitation of the above ratio effectively increases the gap between the insertion end and the inner wall of the inner tank, ensuring the enamel effect of the entire water heater inner tank.
[0023] As an alternative, r / h=0.5.
[0024] The above ratio is limited to ensure that the entire insertion end port has a rounded transition.
[0025] As an optional solution, the inner liner is an enamel inner liner.
[0026] The enamel liner has the advantage of a long service life.
[0027] As an optional solution, the connector includes an inlet pipe connector, an outlet pipe connector and a magnesium rod connector. Three mounting holes are arranged at intervals on the mounting wall of the inner tank. The inlet pipe connector, the outlet pipe connector and the magnesium rod connector are connected to the three mounting holes one by one.
[0028] The above arrangement realizes the connection between the inner tank and the external water inlet pipe and the water outlet pipe, and also realizes the connection between the inner tank and the internal magnesium rod.
[0029] As an optional solution, the liner includes:
[0030] The inner tank body; and
[0031] The inner liner end cap is welded to the inner liner body, and the mounting hole is arranged on the mounting wall of the inner liner end cap.
[0032] The structural design of the inner liner mentioned above makes it easier to assemble and process the entire inner liner.
[0033] As an optional solution, the water heater tank further includes:
[0034] A flange is fixedly mounted on the inner shell head.
[0035] By arranging the flange, it is convenient to install and fix the heating rod inside the inner tank.
[0036] An electric water heater comprises a shell and a water heater inner tank as described above, wherein the water heater inner tank is installed in the shell.
[0037] The electric water heater provided by the utility model increases the service life of the electric water heater by applying the water heater inner tank, and is also convenient for processing and manufacturing.
[0038] Beneficial effects of the utility model:
[0039] The utility model provides a water heater inner tank, which includes an inner tank and a connector, wherein a mounting hole is provided on the mounting wall of the inner tank, the connector is welded and fixed in the mounting hole, both end faces of the connector are planes, one end of the connector extending into the inner tank is an insertion end, and the outer wall at the port of the insertion end is rounded. By setting the outer wall rounded at the port of the insertion end, the gap between the inner wall of the inner tank and the insertion end is effectively increased, which makes it easier to enamele between the inner wall of the inner tank and the insertion end, improves the effect of enameling between the inner wall of the inner tank and the insertion end, avoids corrosion of the inner tank, reduces the risk of water leakage in the inner tank, and improves the service life of the inner tank. In addition, both end faces of the connector are planes, and there is no need to chamfer the insertion end of the connector, so that the structure of the connector is simple and easy to process and manufacture.
[0040] The utility model also provides an electric water heater, which increases the service life of the electric water heater by applying the water heater inner tank, and is also convenient for processing and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] Figure 1 It is a structural schematic diagram of the water heater inner tank provided in the first embodiment of the utility model;
[0042] Figure 2 This is a partial structural cross-section of the water heater tank provided in the first embodiment of the utility model. Figure 1 ;
[0043] Figure 3 This is a partial structural cross-section of the water heater tank provided in the first embodiment of the utility model. Figure 2 ;
[0044] Figure 4 It is a partial structural cross-sectional view of the water heater inner tank provided in the second embodiment of the utility model.
[0045] In the figure:
[0046] 1. Inner liner; 11. Inner liner body; 12. Inner liner head; 121. Mounting hole; 2. Connector; 21. Insert end; 3. Flange; 4. Welding layer. DETAILED DESCRIPTION
[0047] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.
[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0050] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0051] Embodiment 1
[0052] The interior of the existing water heater is usually provided with an inner tank, which is used to store hot water. Usually, the inner tank needs to be enameled to avoid corrosion of the inner tank and to increase the service life of the inner tank. In addition, in order to facilitate the connection of the inner tank with the external water inlet or outlet pipe, a connector needs to be inserted into the inner tank, and the connector is welded and fixed to the inner tank, so that the inner tank is connected to the external water inlet or outlet pipe through the connector. In the related art, after the connector is inserted into the inner tank, the insertion end of the connector extends into the inner tank, and the inner tank is arc-shaped, so that the gap between the inner wall of the inner tank and the insertion end of the connector is small, which is not convenient for enameling between the inner wall of the inner tank and the insertion end, and enamel is easily deposited between the inner wall of the inner tank and the insertion end. In the subsequent high-temperature sintering process, the phenomenon of enamel cracking is easy to occur, which makes the inner tank prone to corrosion due to poor enameling, greatly reducing the service life of the inner tank and the entire electric hot water. Furthermore, in the related art, in order to facilitate the welding connection between the connector and the inner liner, the insertion end of the connector usually needs to be beveled, which increases the difficulty of processing and manufacturing the connector.
[0053] In order to solve the above problems, Figure 1 and Figure 2 As shown, the present embodiment provides a water heater inner tank, which includes an inner tank 1 and a connector 2, wherein a mounting hole 121 is provided on the mounting wall of the inner tank 1, the connector 2 is welded and fixed in the mounting hole 121, the two end faces of the connector 2 are both planes, the end of the connector 2 extending into the inner tank 1 is the insertion end 21, and the outer wall at the port of the insertion end 21 is chamfered. The water heater inner tank provided in the present embodiment effectively increases the gap between the inner wall of the inner tank 1 and the insertion end 21 by setting the outer wall chamfer at the port of the insertion end 21, which makes it easier to enamele between the inner wall of the inner tank 1 and the insertion end 21, improves the effect of enameling between the inner wall of the inner tank 1 and the insertion end 21, avoids corrosion of the inner tank 1, reduces the risk of water leakage of the inner tank 1, and improves the service life of the inner tank 1. In addition, since the two end faces of the connector 2 are both planes, there is no need to chamfer the insertion end 21 of the connector 2, so that the structure of the connector 2 is simple and easy to process and manufacture.
[0054] In addition, it should be noted that the structural design of the water heater inner tank improves the enamel effect of the entire water heater inner tank, so that the enamel layer on the water heater inner tank completely isolates the water from the steel plate, thereby reducing the consumption of the sacrificial anode in the water heater inner tank and increasing the service life of the sacrificial anode. In addition, it should be noted that the inner tank 1 is an enameled inner tank to ensure the service life of the inner tank 1.
[0055] Optionally, in this embodiment, if Figure 2As shown, along the axial direction of the connector 2, the portion of the insertion end 21 closest to the inner wall of the liner 1 is the connection port, and the outer wall at the connection port is provided with a rounded start portion connected to the inner wall of the liner 1. The above arrangement not only ensures the tight effect of the connection between the connector 2 and the mounting hole 121, but also avoids the insertion end 21 extending into the liner 1 too long, further avoids the gap between the insertion end 21 and the inner wall of the liner 1 being too small, and improves the effect of enamelling between the inner wall of the liner 1 and the insertion end 21.
[0056] Optionally, in this embodiment, the inner wall at the port of the insertion end 21 is also rounded. By also rounding the inner wall at the port of the insertion end 21, it is also convenient to enamel the inside of the insertion end 21, thereby ensuring the enamel effect of the entire water heater tank.
[0057] Preferably, the radius of the inner wall rounding at the port of the insertion end 21 is the same as the radius of the outer wall rounding at the port of the insertion end 21. The above arrangement makes it easier to process the connector 2 and makes the connector 2 more beautiful.
[0058] Optionally, in this embodiment, if Figure 3 As shown, when welding the connector 2 and the liner 1, the liner 1 and the connector 2 are welded and connected on the outside of the liner 1, so that a corresponding welding layer 4 is formed between the outer wall of the liner 1 and the connector 2. By welding and connecting the liner 1 and the connector 2 on the outside of the liner 1, it is more convenient to perform the welding operation. Optionally, the welding operation between the connector 2 and the liner 1 can be performed by argon arc welding, or other forms of welding connection. This embodiment does not limit the specific form of welding.
[0059] Optionally, in this embodiment, if Figure 2 and Figure 3 As shown, the wall thickness of the connector 2 is h, and the radius of the inner wall and outer wall fillets at the port of the insertion end 21 are both r, then r / h = 0.4-0.5. The above ratio is limited to effectively increase the gap between the insertion end 21 and the inner wall of the inner tank 1, ensuring the enamel effect on the entire water heater inner tank. Specifically, r / h can be 0.4, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49 or 0.5. In this embodiment, r / h = 0.5 is preferably used, thereby ensuring that the port of the entire insertion end 21 is rounded. In addition, it should be noted that by adjusting the size of the inner wall and outer wall fillets at the port of the insertion end 21, the size of the gap between the insertion end 21 and the inner wall of the inner tank 1 can be changed, so that the gap between the insertion end 21 and the inner wall of the inner tank 1 is as smooth as possible, thereby improving the enamel adhesion ability at the gap.
[0060] In this embodiment, the inner tank 1 includes an inner tank body 11 and an inner tank head 12, wherein the inner tank head 12 is welded to the inner tank body 11, and a mounting hole 121 is provided on the mounting wall of the inner tank head 12. When the entire water heater inner tank needs to be assembled, the connector 2 is first welded and fixed to the inner tank head 12, and then the inner tank head 12 with the connector 2 welded and fixed to the inner tank body 11 is welded and fixed.
[0061] In this embodiment, if Figure 1 As shown, the inner tank of the water heater includes three connectors 2, which are respectively an inlet pipe connector, an outlet pipe connector and a magnesium rod connector. Three mounting holes 121 are arranged at intervals on the mounting wall of the inner tank cover 12, and the inlet pipe connector, the outlet pipe connector and the magnesium rod connector are connected to the three mounting holes 121 in a one-to-one correspondence. In this embodiment, the head of the inlet pipe connector (i.e., the end away from the insertion end 21) is provided with an external thread to facilitate threaded connection with the external inlet pipeline, the head of the outlet pipe connector (i.e., the end away from the insertion end 21) is provided with an external thread to facilitate threaded connection with the external outlet pipeline, and the head of the magnesium rod connector (i.e., the end away from the insertion end 21) is provided with an internal thread to facilitate threaded connection with the magnesium rod inside the inner tank 1.
[0062] In addition, if Figure 1 As shown, the water heater inner tank provided in this embodiment further includes a flange 3, which is fixedly mounted on the inner tank end cap 12. By providing the flange 3, it is convenient to install and fix the heating rod inside the inner tank 1.
[0063] The present embodiment also provides an electric water heater, which includes a housing and the above-mentioned water heater inner tank, wherein the water heater inner tank is installed in the housing. The electric water heater provided in the present embodiment increases the service life of the electric water heater by using the above-mentioned water heater inner tank, and is also easy to process and manufacture.
[0064] Embodiment 2
[0065] The water heater inner tank provided in this embodiment is basically the same as that in the first embodiment. The difference between the water heater inner tank provided in this embodiment and that in the first embodiment is that:
[0066] like Figure 4As shown, when the connector 2 and the inner tank 1 are welded, the inner wall of the inner tank 1 and the outer wall of the port of the insertion end 21 are welded inside the inner tank 1, and the outer periphery of the welding layer 4 formed between the inner wall of the inner tank 1 and the outer wall of the port of the insertion end 21 is arc-shaped. By welding the inner tank 1 and making the outer periphery of the welding layer 4 arc-shaped, the gap between the outer wall of the insertion end 21 and the inner wall of the inner tank 1 is filled, and even the corners of the gap are melted off during the welding process, so that the inner wall of the inner tank 1 and the insertion end 21 are smoother. When the welding operation is completed and the inner tank of the water heater is enameled, the effect of enameling between the inner wall of the inner tank 1 and the insertion end 21 is further improved.
[0067] It should be noted that when the inner wall of the inner liner 1 and the outer wall of the port of the insertion end 21 are connected by welding inside the inner liner 1, the welding layer 4 can completely fill the gap between the connection port and the inner wall of the inner liner 1, further improving the enameling effect between the inner wall of the inner liner 1 and the insertion end 21.
[0068] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. A water heater tank, characterized in that: include: An inner liner (1), wherein a mounting hole (121) is provided on a mounting wall of the inner liner (1); and A connecting head (2), the connecting head (2) is welded and fixed in the mounting hole (121), both end faces of the connecting head (2) are planes, the end of the connecting head (2) extending into the inner tank (1) is an insertion end (21), and the outer wall at the port of the insertion end (21) is rounded.
2. The water heater inner tank according to claim 1, characterized in that: Along the axial direction of the connector (2), the portion of the port of the insertion end (21) closest to the inner wall of the inner liner (1) is the connection port, and the outer wall at the connection port is provided with a chamfered starting portion connected to the inner wall of the inner liner (1).
3. The water heater inner tank according to claim 1, characterized in that: The inner wall at the port of the insertion end (21) is also rounded.
4. The water heater inner tank according to claim 3, characterized in that: The radius of the inner wall rounded corner at the port of the insertion end (21) is the same as the radius of the outer wall rounded corner at the port of the insertion end (21).
5. The water heater inner tank according to any one of claims 1 to 4, characterized in that: The inner wall of the inner liner (1) and the outer wall of the port of the insertion end (21) are connected by welding inside the inner liner (1); or the inner liner (1) and the connector (2) are connected by welding outside the inner liner (1).
6. The water heater inner tank according to claim 5, characterized in that: The inner wall of the inner liner (1) and the outer wall of the port of the insertion end (21) are connected by welding inside the inner liner (1), and the outer periphery of the welding layer (4) formed between the inner wall of the inner liner (1) and the outer wall of the port of the insertion end (21) is arc-shaped.
7. The water heater inner tank according to claim 4, characterized in that: The wall thickness of the connector (2) is h, and the radius of the chamfered corners of the inner wall and the outer wall at the port of the insertion end (21) are both r, so r / h=0.4-0.
5.
8. The water heater inner tank according to claim 7, characterized in that: r / h＝0.5。 9. The water heater inner tank according to any one of claims 1 to 4, characterized in that: The inner container (1) is an enamel inner container.
10. The water heater inner tank according to any one of claims 1 to 4, characterized in that: The connector (2) comprises a water inlet pipe connector, a water outlet pipe connector and a magnesium rod connector. Three mounting holes (121) are arranged at intervals on the mounting wall of the inner tank (1). The water inlet pipe connector, the water outlet pipe connector and the magnesium rod connector are connected to the three mounting holes (121) in a one-to-one correspondence.
11. The water heater inner tank according to any one of claims 1 to 4, characterized in that: The inner container (1) comprises: Inner container body (11); and An inner liner sealing head (12), the inner liner sealing head (12) is welded to the inner liner body (11), and the mounting hole (121) is provided on a mounting wall of the inner liner sealing head (12).
12. The water heater inner tank according to claim 11, characterized in that: The water heater tank also includes: A flange (3), wherein the flange (3) is fixedly mounted on the liner head (12).
13. An electric water heater, characterized in that: It comprises an outer shell and the water heater inner tank as claimed in any one of claims 1 to 12, wherein the water heater inner tank is installed in the outer shell.