CN201159537Y - Electric water heater liner - Google Patents

Abstract

The utility model provides an inner container of an electric water heater, which comprises at least two water tanks and one or more connecting pipes. The connecting pipe is divided into two sections, and the two sections of round pipes are connected to each other. set. Each inner tank of the utility model can be individually enamelled and processed separately, and has good sealing performance. The protective cover effectively isolates the connecting pipe from contacting with water, so that the connecting pipe and the connection between the connecting pipe and the inner tank are free from corrosion, and the service life of the inner tank is increased.

Description

Electric water heater liner

Technical field:

The utility model relates to an inner tank of an electric water heater, in particular to a double inner tank or multiple inner tanks.

Background technique:

The current electric water heater with independent multi-liner structure adopts two or more water tanks, the water tanks are connected by connecting pipes, and the two sections of the connecting pipes are directly welded on the water tanks. Since the inner tank is in constant contact with the water body, in order to avoid corrosion of the inner tank, enamel technology is often used for treatment. However, after the two water tanks are welded together by connecting pipes, the enamel process is difficult to realize. If the water tanks are enamelled respectively and then the connecting pipes are welded together, the enamel at the interface between the water tanks and the connecting pipes will be easily broken due to welding stress. Therefore, it is urgent to solve the corrosion problem of electric water heaters with multi-liner structures.

Invention content:

The utility model provides an electric water heater liner which has good sealing performance at the joint, good anti-corrosion effect, and can be individually enamelled and processed.

The utility model is achieved in that:

An inner container of an electric water heater includes at least two water tanks and one or more communicating pipes, the communicating pipes are divided into two sections, the two communicating pipes are connected to each other, and the inner walls of the communicating pipes are provided with protective sleeves.

It can also be further improved through the following technical solutions:

The protective cover is in the shape of a straight cylinder, and the outer wall of the protective cover is sealed and fitted with the inner wall of the connecting pipe and the water inlet and outlet ports of the water tank. The fin is compressed between two sections of connecting pipes, and a sealing ring is arranged between the two sections of connecting pipes and outside the annular fin.

The protective cover is divided into two sections, one end of each section of the protective cover is bent outwards and respectively clings to the inner wall of the water inlet and outlet ports of the corresponding water tank, and the other end is tightly fitted and pressed between the two sections of connecting pipes.

One of the connecting pipes is a round pipe with a flanging flange, and the other is a round pipe with two-stage diameters. The inner diameter of the large-diameter pipe section is equal to the outer diameter of the flanging flange, and the two round pipes are welded.

One of the connecting pipes is a round pipe with a flanging flange, and the other is a round pipe with a flange, and the two sections of round pipes are connected by screws.

The joint pain tube of the utility model is divided into two sections, and the respective connecting tubes can be separately enamelled and processed separately after the water tank is welded. The connecting pipes can be connected by fasteners or welded, which will not affect the enamel of the inner tank. The sealing performance of the connection is good, and the protective cover effectively isolates the connecting pipe from contact with water, so that the connecting pipe and the connection between the connecting pipe and the water tank are protected from corrosion, and the service life of the inner tank is increased. The protective cover is made of anti-corrosion material, and the protective cover can also be made of aluminum to protect the inner tank of the whole water heater from corrosion.

Description of drawings

Fig. 1 is the sectional view of embodiment 1;

Fig. 2 is the enlarged schematic diagram of part A of embodiment 1;

Fig. 3 is the enlarged schematic view of the joint between the water tanks of embodiment 2;

Figure 4 is an enlarged schematic view of the connection between the water tanks in Example 3.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Embodiment 1, with reference to Fig. 1 and Fig. 2, an electric water heater liner, including two water tanks 1, 2 and connecting pipes 3, 5, the connecting pipe 5 is divided into two sections 51, 52, and two sections of round pipes 51, 52 They are connected to each other, and the inner walls of the connecting pipes 3 and 5 are provided with protective sleeves 9. One of the connecting pipes 52 is a round pipe with a flanging flange, and the other 51 is a round pipe with two-stage diameters. The inner diameter of the large-diameter pipe section is equal to the outer diameter of the flanging flange, and the two round pipes 51 and 52 are connected by welding .

The protective cover 7 is in the shape of a straight cylinder. There is a protruding annular protrusion 8 on the outer wall of the protective cover 7. A ring-shaped fin 9 protrudes from the middle of the outer wall of the protective cover 7. The annular wing 9 is pressed between the two sections of circular tubes 51 and 52. A sealing ring 10 is provided between the two sections of circular tubes 51 and 52 and outside the annular fin 9 .

Embodiment 2, with reference to FIG. 3 , the difference between embodiment 2 and embodiment 1 is that the protective cover is divided into two sections 71 and 72 , and one end of the protective cover 71 is bent outwards and closely attached to the water inlet port 6 of the corresponding water tank 1 On the inner wall, one end of the protective sleeve 72 is bent outwards and tightly attached to the inner wall of the water outlet port 4 of the corresponding water tank 2, and the other ends of the two sections of protective sleeves 71, 72 are sealed and pressed tightly between the two sections of connecting pipes 51, 52 .

Embodiment 3, in conjunction with Fig. 4, the difference between embodiment 3 and embodiment 2 is that one of the connecting pipes 52 is a round pipe with a flanging flange, the other 51 is a round pipe with a flange, two sections of round pipe 51, 52 are connected by screw buckle 11.

Claims (7)

1. An electric water heater liner, including at least two water tanks and one or more connecting pipes, characterized in that the connecting pipe is divided into two sections, the two sections of circular pipes are connected to each other, and the inner wall of the connecting pipe is provided with a protective set. 2. The tank of the electric water heater according to claim 1, characterized in that the protective cover is in the shape of a straight cylinder, the outer wall of the protective cover is sealed and fitted with the inner wall of the communication pipe and the water inlet and outlet ports of the water tank, and the outer wall of the protective cover has a protruding ring. A ring-shaped fin protrudes from the middle of the outer wall of the protective sleeve, and the ring-shaped fin is pressed between two connecting pipes, and a sealing ring is provided between the two connecting pipes and outside the ring-shaped fin. 3. The tank of the electric water heater according to claim 1, characterized in that the protective cover is divided into two sections, one end of each section of the protective cover is bent outwards and closely attached to the inner wall of the water inlet and outlet ports of the corresponding water tank, and the other One end is sealed and pressed between the two connecting pipes. 4. The tank of the electric water heater according to claim 1, characterized in that one of the connecting pipes is a round pipe with flanged flanges, and the other is a round pipe with two-stage diameters, and the inner diameter of the large-diameter pipe section is the same as the flanged flange. The outer diameters of the flanges are equal, and the two sections of round pipes are welded together. 5. The tank of the electric water heater according to claim 1, characterized in that one of the connecting pipes is a round pipe with a flanging flange, and the other is a round pipe with a flange, and the two round pipes are connected by a screw. . 6. The inner tank of the electric water heater according to claim 1, wherein the protective cover is made of anti-corrosion material. 7. The inner container of the electric water heater according to claim 1, wherein the protective cover is made of aluminum plate.

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