Inner container of electric water heater and electric water heater

Abstract

The utility model relates to electric water heater technical field discloses a kind of inner container of electric water heater and electric water heater. Wherein the inner container of electric water heater includes first body, second body and first reinforcing plate, first body and second body are all stretched integrated molding;The first opening of first body can be butted with the second opening of second body and is connected by welding sealing to form body, and first upper water chamber and second upper water chamber are communicated to form upper water chamber, and second upper water chamber and second lower water chamber are communicated to form lower water chamber;First reinforcing plate is set in body, and first reinforcing plate is connected with the sidewall of the front and back two sides of first connecting section and / or the sidewall of the front and back two sides of second connecting section. The inner container of electric water heater of the utility model, by first connecting section, second connecting section and first reinforcing plate, effectively improve the pressure-bearing performance of inner container, more difficult to deform.

Description

Technical Field

[0001] This utility model relates to the field of electric water heater technology, and in particular to an inner tank of an electric water heater and an electric water heater. Background Technology

[0002] In existing technologies, to reduce thickness, some electric water heaters adopt a "dual inner tank" design. The "dual inner tank" includes a middle cylinder and end caps at both ends. Generally, the middle cylinder is welded first, and then the end caps are welded to both ends. A dual inner tank typically consists of an upper tank and a lower tank, connected by a connecting pipe. This design occupies a large space and has many welding points, increasing the risk of leakage. Furthermore, due to its larger overall size, a dual inner tank design also suffers from poor structural strength.

[0003] Therefore, there is an urgent need for an inner tank and an electric water heater to solve the above problems. Utility Model Content

[0004] One of the technical problems solved by this utility model is to provide an inner tank for an electric water heater that can effectively solve the shortcomings of existing double inner tanks, such as large volume, many welding positions, and poor structural strength.

[0005] The second technical problem solved by this utility model is to provide an electric water heater that can effectively solve problems such as large size, deformation, and leakage risks.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] An inner tank for an electric water heater, comprising:

[0008] The first tank body is integrally formed by stretching, and a first opening is provided at one end along the stretching direction. The side wall of the first tank body has an inwardly recessed first connecting section so that a first water inlet chamber and a first water outlet chamber are formed in the first tank body.

[0009] The second tank is integrally formed by stretching, and a second opening is provided at one end along the stretching direction. The side wall of the second tank has an inwardly recessed second connecting section so that a second upper water chamber and a second lower water chamber are formed in the second tank.

[0010] The first opening can be connected to the second opening and sealed by welding to form a tank, and the first upper water chamber and the second upper water chamber are connected to form an upper water chamber, and the second upper water chamber and the second lower water chamber are connected to form a lower water chamber.

[0011] A first reinforcing plate is disposed within the bladder body, and the first reinforcing plate is connected to the side walls on the front and rear sides of the first connecting section and / or the side walls on the front and rear sides of the second connecting section.

[0012] The inner tank of the electric water heater described in this utility model has the following advantages compared with the prior art:

[0013] The inner liner of this invention comprises a first liner body and a second liner body integrally formed by stretching. This integrated structure reduces welding points and thus the risk of leakage. The first liner body forms a first upper water cavity and a first lower water cavity via an inwardly recessed first connecting section, and the second liner body forms a second upper water cavity and a second lower water cavity via an inwardly recessed second connecting section. This results in the liner body after assembly having an upper water cavity at the top and a lower water cavity at the bottom. The upper water cavity includes both the first and second upper water cavities, and the lower water cavity includes both the first and second lower water cavities. This arrangement eliminates the need for a separate welded connecting pipe between the upper and lower water cavities, further reducing welding points and improving the compactness of the inner liner structure. It also enhances the convection heat transfer effect of the liquid within the upper and lower water cavities. Furthermore, a first reinforcing plate is provided between the upper and lower water cavities, supporting the first connecting section and / or the second connecting section. This enhances the structural strength of the inner liner, improving its pressure resistance and reducing its resistance to deformation.

[0014] In one embodiment, the first reinforcing plate is arranged parallel to the stretching direction.

[0015] In one embodiment, the first connecting segment and / or the second connecting segment are provided with mounting through holes, the first reinforcing plate passes through the mounting through holes and is welded to the bladder body.

[0016] In one embodiment, the first reinforcing plate is arranged perpendicular to the stretching direction, and / or, there are two or more first reinforcing plates, which are parallel and spaced apart along the stretching direction.

[0017] In one embodiment, the first connecting segment is configured as an arc structure with a radius greater than 20 mm; and / or, the second connecting segment is configured as an arc structure with a radius greater than 20 mm.

[0018] In one embodiment, the inner tank of the electric water heater is further provided with a second reinforcing plate, the second reinforcing plate at least covering a portion of the first connecting section and connected to the outer wall of the first tank body; and / or the second reinforcing plate at least covering a portion of the second connecting section and connected to the outer wall of the second tank body.

[0019] In one embodiment, the inner tank of the electric water heater is further provided with a third reinforcing plate, one end of which is connected to the second reinforcing plate, and the other end is connected to the first connecting segment and / or the second connecting segment.

[0020] In one embodiment, the first reinforcing plate is connected to the third reinforcing plate.

[0021] In one embodiment, the lower end of the tank body is provided with an outlet, an inlet, and a drain outlet; the end of the second tank body away from the second opening is respectively provided with an upper flange that communicates with the second upper water chamber and a lower flange that communicates with the second lower water chamber.

[0022] The second technical problem mentioned above is solved by the following technical solution:

[0023] An electric water heater includes the inner tank of the electric water heater described in any of the preceding embodiments.

[0024] Compared with the prior art, the electric water heater described in this utility model has the following beneficial effects:

[0025] The electric water heater of this utility model is equipped with the aforementioned inner tank, which makes the overall structure of the electric water heater more compact and smaller; at the same time, the inner tank has greater structural strength, fewer welding positions, and a lower risk of deformation and leakage, making the use of the electric water heater safer. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the hidden reinforcing plate of the inner tank of the electric water heater provided in a specific embodiment of this utility model;

[0028] Figure 2 This is a cross-sectional view of the inner tank of an electric water heater provided in a specific embodiment of this utility model;

[0029] Figure 3 This is a schematic diagram of the inner tank of an electric water heater provided in a specific embodiment of this utility model;

[0030] Figure 4 This is an exploded schematic diagram of the inner tank of an electric water heater provided in a specific embodiment of this utility model.

[0031] Label Explanation:

[0032] 10. Inner chamber; 11. Mounting through hole; 20. Upper water chamber; 30. Lower water chamber;

[0033] 100. First tank; 101. First water inlet chamber; 102. First water outlet chamber; 110. First opening; 120. First connecting section; 130. Water outlet; 140. Sewage outlet;

[0034] 200, Second tank; 201, Second upper water chamber; 202, Second lower water chamber; 210, Second opening; 220, Second connecting section; 230, Water inlet; 240, Upper flange opening; 250, Lower flange opening;

[0035] 310. First reinforcing plate; 320. Second reinforcing plate; 330. Third reinforcing plate;

[0036] 410. Water inlet connector; 420. Water outlet connector; 430. Sewage drain connector; 440. Flange. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] like Figures 1-4 As shown, this embodiment provides an inner tank for an electric water heater. The inner tank includes a first tank body 100, a second tank body 200, and a first reinforcing plate 310. The first tank body 100 is integrally formed by stretching, and a first opening 110 is provided at one end along the stretching direction. The side wall of the first tank body 100 has an inwardly recessed first connecting section 120, so that a first water inlet chamber 101 and a first water outlet chamber 102 are formed inside the first tank body 100. The second tank body 200 is integrally formed by stretching, and a second opening 210 is provided at one end along the stretching direction. The side wall of the second tank body 200 has an inwardly recessed first connecting section 120, so that a first water inlet chamber 101 and a first water outlet chamber 102 are formed inside the first tank body 100. The recessed second connecting section 220 forms a second water inlet cavity 201 and a second water outlet cavity 202 that are connected within the second tank body 200; the first opening 110 can be connected to the second opening 210 and sealed by welding to form the tank body 10, and the first water inlet cavity 101 and the second water inlet cavity 201 are connected to form the water inlet cavity 20, and the second water inlet cavity 201 and the second water outlet cavity 202 are connected to form the water outlet cavity 30; the first reinforcing plate 310 is disposed within the tank body 10, and the first reinforcing plate 310 is connected to the side walls on the front and rear sides of the first connecting section 120 and / or the side walls on the front and rear sides of the second connecting section 220.

[0042] The inner liner includes a first liner 100 and a second liner 200 integrally formed by stretching. This integral structure reduces welding points and thus the risk of leakage. The first opening 110 of the first liner 100 and the second opening 210 of the second liner 200 can be joined and welded to form the liner 10, wherein the axis of the liner 10 is parallel to the stretching direction. The first liner 100 forms a first upper water chamber 101 and a first lower water chamber 102 through an inwardly recessed first connecting section 120, and the second liner 200 forms a second upper water chamber 201 and a second lower water chamber 202 through an inwardly recessed second connecting section 220. This results in the liner 10 having an upper water chamber 20 located above and a lower water chamber 30 located below. The upper water chamber 20 includes the connected first upper water chamber 101 and the second upper water chamber 201, and the lower water chamber 30 includes the connected first lower water chamber 102 and the second lower water chamber 202. The aforementioned design eliminates the need for a welded connecting pipe between the upper water chamber 20 and the lower water chamber 30, further reducing welding points and improving the compactness of the inner tank structure. It also enhances the convection heat transfer effect of the liquid within the upper and lower water chambers 20 and 30. Furthermore, a first reinforcing plate 310 is provided between the upper and lower water chambers 20 and 30, supporting the first connecting section 120 and / or the second connecting section 220. This improves the structural strength of the inner tank, resulting in better pressure resistance and reduced deformation. In summary, the inner tank of this electric water heater effectively addresses the shortcomings of existing double-inner-tank designs, such as large volume, numerous welding points, and poor structural strength. It features a more compact structure, fewer welding points, and higher structural strength.

[0043] It is worth noting that the first reinforcing plate 310 has a flow channel on at least one side along the tensile direction, which improves structural strength without affecting the flow heat exchange between the upper water chamber 20 and the lower water chamber 30. The first reinforcing plate 310 is a sheet metal part, which is simple in structure, easy to install, and lower in cost. Furthermore, it reduces the space occupied inside the tank 10, ensuring the water storage capacity of the inner tank. Specifically, the first reinforcing plate 310 is arranged parallel to the tensile direction, which helps to improve the structural strength at various points along the tensile direction.

[0044] In this embodiment, to facilitate the installation of the first reinforcing plate 310, the first connecting section 120 and / or the second connecting section 220 are provided with mounting through holes 11. The first reinforcing plate 310 passes through the mounting through holes 11 and is welded to the liner 10. The welded connection has high reliability and good sealing performance. The mounting through holes 11 not only enable the pre-positioning of the first reinforcing plate 310 but also allow operators to perform welding on the outside of the liner 10, improving the convenience of the welding operation.

[0045] In other embodiments, the first reinforcing plate 310 may be configured to form an angle with the stretching direction.

[0046] For example, two or more first reinforcing plates 310 are provided, and the two or more first reinforcing plates 310 are parallel and spaced apart along the axial direction of the inner liner 10, which improves the strength effect. It is understood that a flow channel is provided between two adjacent first reinforcing plates 310. Optionally, the inner liner is provided with three first reinforcing plates 310, one first reinforcing plate 310 is provided in the first inner liner 100, one first reinforcing plate 310 is provided in the second inner liner 200, and one first reinforcing plate 310 is provided at the position of the first inner liner 100 and the second inner liner 200, and is connected to both the first inner liner 100 and the second inner liner 200.

[0047] Preferably, the upper water chamber 20 and the lower water chamber 30 are configured with approximately the same volume. In this case, the mounting through hole 11 is located at the connecting section, making the structural reinforcement of the tank 10 in the vertical direction more balanced. Specifically, the first connecting section 120 is an arc-shaped structure protruding towards the inside of the tank 10, integrally formed by stretching. Considering the stretching process, cracking is avoided, and the radius of the arc is greater than 20mm, which also facilitates subsequent enamel processing. Similarly, the second connecting section 220 is also set as an arc-shaped structure with a radius greater than 20mm.

[0048] Specifically, the inner tank of the electric water heater is also provided with a second reinforcing plate 320. The second reinforcing plate 320 covers at least part of the first connecting section 120 and is connected to the outer wall of the first tank body 100. In this case, the second reinforcing plate 320 can be used to increase the structural strength of the first water inlet chamber 101 and the second water outlet chamber 202 of the first tank body 100; or the second reinforcing plate 320 covers at least part of the second connecting section 220 and is connected to the outer wall of the second tank body 200. In this case, the second reinforcing plate 320 can be used to increase the structural strength of the second water inlet chamber 201 and the second water outlet chamber 202 of the second tank body 200.

[0049] In this embodiment, the second reinforcing plate 320 extends along the axial direction of the inner liner and simultaneously covers the first connecting section 120 and the second connecting section 220, thereby simultaneously increasing the structural strength of the first liner 100 and the second liner 200. Furthermore, the second reinforcing plate 320 is also connected to both the first liner 100 and the second liner 200, which helps to improve the connection strength between the first liner 100 and the second liner 200. Specifically, the upper and lower sides of the second reinforcing plate 320 are welded to the outer wall of the liner 10.

[0050] Furthermore, the inner tank of the electric water heater is also provided with a third reinforcing plate 330. One side of the third reinforcing plate 330 is connected to the second reinforcing plate 320, and the other side is connected to the first connecting section 120 and / or the second connecting section 220. By providing the third reinforcing plate 330, it is beneficial to increase the connection points between the second reinforcing plate 320 and the tank body 10, which is beneficial to further improve the pressure-bearing capacity of the tank body 10. For example, the third reinforcing plate 330 is arranged perpendicular to the second reinforcing plate 320, which provides a better reinforcement effect and also helps to reduce the length of the third reinforcing plate 330, thereby reducing the weight of the inner tank and reducing costs.

[0051] Optionally, the first reinforcing plate 310 and the inner tube 10, the second reinforcing plate 320 and the inner tube 10, the third reinforcing plate 330 and the inner tube 10, the first reinforcing plate 310 and the third reinforcing plate 330, and the second reinforcing plate 320 and the third reinforcing plate 330 are all connected by welding. It is understood that even with the first reinforcing plate 310, the weld length is still reduced compared to existing methods of welding the inner tube and welding the end caps. Furthermore, the weld length at the first reinforcing plate 310 is relatively short, which helps improve the reliability of the welding.

[0052] As an optional design for the inner tank of an electric water heater, the lower end of the tank body 10 is provided with a water outlet 130, a water inlet 230, and a drain outlet 140 for water inlet, water outlet, and sewage discharge, respectively. The inner tank of the electric water heater also includes a water inlet connector 410, a water outlet connector 420, and a sewage drain connector 430. The water inlet connector 410 is located at the water outlet 130, the water outlet connector 420 is located at the water inlet 230, and the sewage drain connector 430 is located at the sewage drain outlet 140, so as to facilitate connection to the water inlet pipe, water outlet pipe, and sewage drain pipe, respectively. For example, one of the water outlet 130 and the water inlet 230 is located in the second tank body 200, and the other, along with the sewage drain outlet 140, is located in the first tank body 100.

[0053] Furthermore, the end of the second tank 200 furthest from the second opening 210 is provided with an upper flange 240 communicating with the second upper water chamber 201 and a lower flange 250 communicating with the second lower water chamber 202. Correspondingly, the inner tank is also provided with a flange 440. By providing flange openings, it is possible to install flange 440, thereby facilitating the installation of heating devices. By providing two flange openings, heating devices can be installed in the upper water chamber 20 and the lower water chamber 30 respectively, resulting in higher heating efficiency of the inner tank and a better water usage experience.

[0054] Specifically, the processing procedure for the inner tank of the aforementioned electric water heater is as follows: Two shells are formed by stretching, one shell serving as the first tank body 100 and the other as the second tank body 200. An outlet 130, an inlet 230, a drain 140, and a mounting through-hole 11 are provided at corresponding positions on the shells. A flange 240 and a lower flange 250 are punched onto one of the shells; this shell serves as the second tank body 200. Next, a flange 440 is machined and riveted at the flange opening, and then welded. The first reinforcing plate 310 is pre-installed in the mounting through-hole 11, first tack-welded for fixation, and then welded securely. The first opening 110 and the second opening 210 are joined and welded. The second reinforcing plate 320 and the third reinforcing plate 330 are welded to form a T-shaped reinforcing plate and welded to the outside of the tank body 10. Finally, the inlet connector 410, the outlet connector 420, and the drain connector 430 are installed to complete the processing of the inner tank of the electric water heater.

[0055] This embodiment also discloses an electric water heater, including an inner tank as described in any of the above embodiments. The inclusion of this inner tank makes the overall structure of the electric water heater more compact and smaller; simultaneously, the inner tank has greater structural strength, fewer welding points, and a lower risk of deformation and leakage, making the use of the electric water heater safer. Furthermore, because the inner tank has an upper water chamber 20 and a lower water chamber 30, it also offers advantages such as flexible capacity adaptation, higher heating efficiency, a better water experience, and stronger energy efficiency.

[0056] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0057] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An inner tank of an electric water heater, characterized by, include: The first tank (100) is integrally formed by stretching, and a first opening (110) is provided at one end along the stretching direction. The side wall of the first tank (100) has an inwardly recessed first connecting section (120) so that a first water inlet chamber (101) and a first water outlet chamber (102) are formed inside the first tank (100). The second tank (200) is integrally formed by stretching, and a second opening (210) is provided at one end along the stretching direction. The side wall of the second tank (200) has an inwardly recessed second connecting section (220) so that a second upper water chamber (201) and a second lower water chamber (202) are formed inside the second tank (200). The first opening (110) can be connected to the second opening (210) and sealed by welding to form a bladder (10), and the first upper water chamber (101) and the second upper water chamber (201) are connected to form an upper water chamber (20), and the second upper water chamber (201) and the second lower water chamber (202) are connected to form a lower water chamber (30). A first reinforcing plate (310) is disposed inside the bladder (10), and the first reinforcing plate (310) is connected to the side walls on the front and rear sides of the first connecting section (120) and / or the side walls on the front and rear sides of the second connecting section (220).

2. The inner liner of the electric water heater according to claim 1, characterized in that, The first reinforcing plate (310) is arranged parallel to the stretching direction.

3. The inner tank of the electric water heater according to claim 2, characterized in that, The first connecting segment (120) and / or the second connecting segment (220) are provided with mounting through holes (11), the first reinforcing plate (310) passes through the mounting through holes (11) and is welded to the bladder (10).

4. The inner tank of the electric water heater according to claim 3, characterized in that, There are two or more first reinforcing plates (310), and the two or more first reinforcing plates (310) are parallel and spaced apart along the stretching direction.

5. The inner tank of the electric water heater according to claim 1, characterized in that, The first connecting segment (120) is configured as an arc structure with a radius greater than 20 mm; and / or, the second connecting segment (220) is configured as an arc structure with a radius greater than 20 mm.

6. The inner tank of the electric water heater according to claim 1, characterized in that, The inner tank of the electric water heater is further provided with a second reinforcing plate (320), the second reinforcing plate (320) at least covers part of the first connecting section (120) and is connected to the outer wall of the first tank body (100); and / or the second reinforcing plate (320) at least covers part of the second connecting section (220) and is connected to the outer wall of the second tank body (200).

7. The inner tank of the electric water heater according to claim 6, characterized in that, The inner tank of the electric water heater is also provided with a third reinforcing plate (330), one side of which is connected to the second reinforcing plate (320), and the other side is connected to the first connecting section (120) and / or the second connecting section (220).

8. The inner tank of the electric water heater according to claim 7, characterized in that, The first reinforcing plate (310) is connected to the third reinforcing plate (330).

9. The inner tank of the electric water heater according to any one of claims 1-8, characterized in that, The lower end of the tank body (10) is provided with an outlet (130), an inlet (230) and a drain (140); the end of the second tank body (200) away from the second opening (210) is provided with an upper flange (240) communicating with the second upper water chamber (201) and a lower flange (250) communicating with the second lower water chamber (202).

10. An electric water heater, characterized in that, Includes the inner tank of an electric water heater as described in any one of claims 1-9.

Images