CN215571300U

CN215571300U - Electric heating pipe assembly, inner container and electric water heater

Info

Publication number: CN215571300U
Application number: CN202120524059.6U
Authority: CN
Inventors: 李勇; 盛保敬; 王军; 孙强; 赵小勇; 苏进; 赵龙; 马腾
Original assignee: Haier Smart Home Co Ltd; Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Current assignee: Haier Smart Home Co Ltd; Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2022-01-18
Anticipated expiration: 2031-03-12

Abstract

The utility model discloses an electric heating pipe component, an inner container and an electric water heater, comprising: a flange and an electric heating pipe body; the electric heating tube body is used for generating heat by electrifying; one end of the electric heating pipe body is installed on the flange, and an anti-corrosion coating covers the joint of the electric heating pipe body and the inner surface of the flange. The utility model provides an electric heating pipe component, which aims at solving the problem that the welding position of the root part of the electric heating pipe component and a flange is easy to corrode after being used for a long time to cause the cracking and even the fracture of the root part.

Description

Electric heating pipe assembly, inner container and electric water heater

Technical Field

The utility model belongs to the technical field of electric heating, and particularly relates to an electric heating pipe component.

Background

Various electric heating pipes have been widely used in the fields of domestic hot water, industrial hot water, public hot water, and the like, and are also used for heating other liquids.

At present, in order to improve the corrosion resistance of an electric heating pipe, reduce the attachment of water scales and prolong the service life of the electric heating pipe, a common method in the market is to coat a layer of anti-corrosion coating on the outer surface of an electric heating pipe body, and the used anti-corrosion coating is mostly an enamel coating. If only the tube body of the heating tube is covered with the enamel layer, the welding position at the root of the heating tube is very easy to corrode to cause cracking and even breaking of the root.

Therefore, how to design a section at the suitable position coating enamel layer to prevent electric heating pipe root position corruption, more effective protection electric heating pipe, the coating scope on control enamel layer simultaneously, the coating cost on control enamel layer is the technical problem who awaits the solution urgently.

Disclosure of Invention

The utility model provides an electric heating pipe component, which aims at solving the problem that the welding position of the root part of the electric heating pipe component and a flange is easy to corrode after being used for a long time to cause the cracking and even the fracture of the root part.

In order to realize the purpose of the utility model, the utility model is realized by adopting the following technical scheme:

an electrical heating tube assembly comprising: a flange and an electric heating pipe body; the electric heating tube body is used for generating heat by electrifying; one end of the electric heating pipe body is installed on the flange, and an anti-corrosion coating covers the joint of the electric heating pipe body and the inner surface of the flange.

In some embodiments of the present application, the corrosion protection coating is an enamel layer.

In some embodiments of the present application, the electric heating pipe body is welded to the flange, and the enamel layer covers a welded connection formed between the electric heating pipe body and the flange.

In some embodiments of the present application, the welding connection portion is an annular structure centered at a welding position of the electric heating pipe body and the flange.

In some embodiments of the present application, the width of the ring-shaped structure is at least 2 mm.

In some embodiments of the present application, the flange inner surface includes a first inner surface contacting the electrically heated pipe body and a second inner surface surrounding outside the first inner surface, the enamel layer covering the first inner surface.

In some embodiments of the present application, the first inner surface is adjacent to a side of the electric heating pipe body with respect to the second inner surface in a direction perpendicular to the inner surface of the flange.

The utility model also provides an inner container which comprises a container body and an electric heating pipe component, wherein a connector is arranged on the container body, the electric heating pipe component is the electric heating pipe component in any one of claims 1 to 7, a flange of the electric heating pipe component is connected to the connector, and an electric heating pipe body of the electric heating pipe component extends into the container body.

In some embodiments of the present application, the flange inner surface includes a first inner surface contacting the electric heating pipe body and a second inner surface surrounding outside the first inner surface, the enamel layer covers the first inner surface, and an edge of the first inner surface contacts the connection port.

The utility model also provides an electric water heater, which comprises a shell, an inner container and a heat-insulating layer, wherein the inner container is arranged in the shell, and the heat-insulating layer is filled between the shell and the inner container, and the electric water heater is characterized in that the inner container is the inner container in claim 8 or 9.

Compared with the prior art, the utility model has the advantages and positive effects that: the anti-corrosion coating covers the electric heating pipe body and the part of the joint of the electric heating pipe body and the flange, which extends to the inner surface of the flange, so that the welding part of the joint of the electric heating pipe body and the flange is protected by the anti-corrosion coating, and the anti-corrosion coating is prevented from being corroded to cause cracking and even breaking.

Other features and advantages of the present invention will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of an embodiment of an electric heating tube assembly of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a side view of an embodiment of an electrical heating tube assembly of the present invention;

in the figures, 10, flange; 20, electrically heating the tube body; 11, a first inner surface; 12, a second inner surface; 13, welding the connecting part; 31, a first enamel layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.

It should be noted that in the description of the present invention, the terms "upper", "lower", "inner", "outer", "horizontal", "vertical", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that in the description of the present invention, the terms "mounted" and "connected" are to be interpreted broadly unless explicitly defined or limited otherwise. For example, it may be a fixed connection, a detachable connection or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this embodiment, in order to solve the problems that the welding position of the electric heating pipe body 20 and the flange 10 is easily corroded, cracked, broken, and the like, a mode of expanding the coating range of the anti-corrosion coating is adopted on the design idea, and the anti-corrosion coating is coated on the electric heating pipe body 20 to expand to the position where the electric heating pipe body is easily corroded for protection; in terms of structural design, as shown in fig. 1, a flange 10, an electric heating pipe body 20 and an anti-corrosion coating are designed, and the anti-corrosion coating mostly adopts an enamel layer.

In the present embodiment, as shown in fig. 1 and 2, the electric heating pipe body 20 is mounted on the inner surface of the flange 10, the inner surface of the flange 10 is composed of a first inner surface 11 and a second inner surface 12, the first inner surface 11 is in close contact with the electric heating pipe body 20, and the first inner surface 11 is closer to the electric heating pipe body 20 side than the second inner surface 12 in a direction perpendicular to the flange.

In this case, as shown in fig. 1 and 2, the electric heating pipe body 20 is connected to the first inner surface 11 at the joint by welding, so as to form the welded connection portion 13. In order to prevent the welded joint from being corroded and cracked or even broken, the first enamel layer 31 is formed by coating the enamel layer on the welded joint 13 together with the anti-corrosion coating coated on the electric heating tube 20 while the enamel layer is coated on the electric heating tube 20.

In the present embodiment, as shown in fig. 1, 2 and 3, the first enamel layer 31 forms a ring structure around the connection between the electric heating pipe body 20 and the first inner surface 11, and the width of the ring structure is at least 2mm, so that it can be ensured that the welding portion of the welding connection 13 can be completely covered, thereby avoiding cracking and breaking therein. Only the enamel layer is coated on the welding joint, and the coated material cost is low.

In the present embodiment, as shown in fig. 1 and 2, the second enamel layer may cover the first inner surface 11 in addition to the electric heating tube 20. The liner body is provided with a connecting port, the edge of the first inner surface 11 is in contact with the connecting port, and the first inner surface 11 is the surface of the flange 10 in contact with water in the liner of the water heater. The second enamel layer can ensure the full corrosion resistance of the flange 10, and the process for coating the enamel layer is simple and the processing cost is low.

The embodiment also provides an inner container, which comprises a container body and an electric heating pipe component, wherein the electric heating pipe component penetrates through the connecting port to be installed in the inner container, and the structure and the installation relation of the container body are the same as those of the prior art. The specific structure of the electric heating tube assembly of the liner of this embodiment refers to the embodiment of the electric heating tube assembly of the present invention and the descriptions of fig. 1 and fig. 2, which are not repeated herein.

The utility model also provides an electric water heater, which comprises a shell, an inner container and a heat-insulating layer, wherein the inner container is arranged in the shell, the heat-insulating layer is filled between the shell and the inner container, and the structures and the installation relations of the shell, the inner container and the heat-insulating layer are the same as those of the prior art. In the electric water heater of the present embodiment, the inner container structure thereof is described in the present invention, and will not be described herein again.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An electric heating tube assembly, comprising:

a flange;

the electric heating pipe body is used for generating heat by electrifying;

one end of the electric heating pipe body is installed on the flange, and an anti-corrosion coating covers the joint of the electric heating pipe body and the inner surface of the flange.

2. The electrical heating tube assembly according to claim 1, wherein the corrosion protection coating is an enamel coating.

3. The electric heating tube assembly of claim 1, wherein the electric heating tube body is welded to the flange, and the enamel layer covers a welded connection formed by the electric heating tube body and the flange.

4. The electric heating tube assembly of claim 3, wherein the welded connection is an annular structure centered at a weld of the electric heating tube body and the flange.

5. An electric heating tube assembly according to claim 4, characterized in that the width of the annular structure is at least 2 mm.

6. The electric heating tube assembly of claim 1, wherein the flange inner surface comprises a first inner surface and a second inner surface, the first inner surface being in contact with the electric heating tube body, the second inner surface surrounding the outside of the first inner surface, the enamel layer covering the first inner surface.

7. The electric heating tube assembly of claim 6, wherein the first inner surface is adjacent to a side of the electric heating tube body with respect to the second inner surface in a direction perpendicular to the inner surface of the flange.

8. An inner container, comprising a container body and an electric heating pipe component, wherein the container body is provided with a connector, and the electric heating pipe component is the electric heating pipe component according to any one of claims 1 to 7, the flange of the electric heating pipe component is connected to the connector, and the electric heating pipe body of the electric heating pipe component extends into the container body.

9. The inner container according to claim 8, wherein the inner surface of the flange includes a first inner surface contacting the electric heating pipe body and a second inner surface surrounding outside the first inner surface, the enamel layer covers the first inner surface, and an edge of the first inner surface contacts the connection port.

10. An electric water heater, comprising a shell, an inner container and a heat-insulating layer, wherein the inner container is arranged in the shell, and the heat-insulating layer is filled between the shell and the inner container, and is characterized in that the inner container is the inner container of claim 8 or 9.