WO2004008038A1

WO2004008038A1 - Internal bladder of an overlapping type electric water heater

Info

Publication number: WO2004008038A1
Application number: PCT/CN2003/000052
Authority: WO
Inventors: Jian Jiang
Original assignee: Jian Jiang
Priority date: 2002-07-10
Filing date: 2003-02-13
Publication date: 2004-01-22
Also published as: CN2563492Y; AU2003281061A1

Abstract

The invention relates to an internal bladder of an overlapping type electric water heater, which comprises a steel case, an internal bladder made of silicone rubber, and an electric heater in the internal bladder The shape of the internal bladder corresponds to the shape of inner surface of the steel case. The internal bladder is provided in the steel case. One end of the electric heater is hermetically fixed on a steel flange. The leading end of the steel flange is hermetically covered on the seal of the steel case. Thus the steel case is able to endure high pressure. The internal bladder made of silicone rubber is heat-resistant and useful for prevention of corrosion. The steel case is not liable to be corroded because the steel case does not contact with water.

Description

Composite electric water heater liner

[Technical Field]

The utility model relates to the technical improvement of the inner tanks of "water storage type electric water heaters".

【Background technique】

At present, the storage-type electric water heaters include single-inner electric water heaters, double-inner electric water heaters, and multiple-inner electric water heaters. The core problem that affects the quality of water storage electric water heaters, especially the export-closed products, is the leakage of the inner liner. Due to its irreparability, it has caused huge losses to many enterprises, so the preparation technology of the inner liner of the electric water heater is an important current topic . At present, there are a variety of materials and methods for making liners, which generally include stainless steel liners, titanium liners, steel enamel liners, and the inner walls of steel liners are coated with various anticorrosive coatings. The process of manufacturing the inner tank using stainless steel and titanium alloy is complicated, the equipment is high, the processing cost is high, and the price is expensive. Due to poor water quality and welding process problems of stainless steel in some areas, the welds of stainless steel are also corroded, leading to leakage. Enameled liners are brittle and brittle due to transport and expansion of the steel liner due to pressure. It can also cause corrosion and leakage of steel gall. The use of various coating methods has high requirements for coatings, and its adhesion to metals, strength, non-toxicity, odorlessness, temperature resistance, stretchability, etc., almost meet the conditions.

[Summary of the Invention]

The technical problem to be solved by the utility model is to provide a composite electric water heater liner with anticorrosive candle, high temperature resistance, aging resistance, pressure resistance, non-toxicity, tastelessness, simple manufacture and low cost.

A composite electric water heater liner includes a steel liner shell, a rubber liner, and a built-in heater. The shape of the rubber liner is consistent with the shape of the inner wall of the steel liner shell. The rubber liner is disposed in the steel liner shell. The rear end of the built-in heater is sealed and fixed on the stainless steel flange, and the front end of the stainless steel flange is buckled on the seal of the steel inner casing.

A water inlet and a water outlet are fixedly arranged at the lower end of the steel inner casing, respectively. A rubber water inlet pipe and a rubber water outlet pipe are fixedly arranged at the lower end of the ¾ plastic liner corresponding to the water inlet and the water outlet. The rubber water inlet pipe and rubber The water outlet pipe is inserted into the water inlet and the water outlet of the lower end of the steel housing from the inside of the steel housing, respectively. The lower ends of the rubber inlet pipe and the rubber outlet pipe are respectively fixed at the outer ends of the water inlet and the water outlet. A rubber pad is provided, and the rubber pad is respectively matched with the heads of the water outlet and the water outlet, and the rubber inlet pipe, the rubber outlet pipe, the rubber pad and the rubber liner are formed into a single molding structure. The above-mentioned rubber liner is located at the seal of one side of the steel liner shell and extends outward. An O-shaped rubber apron is fixed. The rubber apron and the rubber lining are a one-time forming structure. The stainless steel flange and ο The rubber aprons fit tightly. '

The inner wall of the steel liner shell is fixedly connected to the outer wall of the rubber liner. '-The above rubber liner is a silicone rubber liner.

The rubber water inlet pipe and the rubber water outlet pipe are respectively a silicone rubber water inlet pipe and a silicone rubber water outlet pipe. The rubber pad is a silicone rubber pad.

The above-mentioned O-type rubber apron is a silicone rubber pad.

When the utility model is used in a double-bladder water heater, a water inlet connection port and a water outlet connection port are fixed on the upper end of a steel liner casing of a composite liner, respectively, and the upper end of the rubber liner is connected to the water inlet port and the water outlet port. Corresponding parts of the connection port are respectively provided with a rubber water inlet connection pipe and a rubber water outlet connection pipe. The rubber water inlet connection pipe and the rubber water outlet connection pipe at the upper end of the rubber liner are respectively inserted into the water inlet connection of the upper end of the steel liner housing The rubber inlets and outlet connections are fixed at the upper end of the rubber inlet connection pipe and the rubber outlet connection pipe, and are located at the outer ends of the inlet connection and outlet connection, respectively, with rubber pads. The rubber inlet connection pipe, the rubber outlet connection pipe, The rubber pad and the rubber inner liner are formed in one time. The water inlet connection and the water outlet connection at the upper end of the steel liner housing can be sealedly connected to the water inlet and outlet of the steel liner housing in the other composite liner through stainless steel or copper parts, respectively.

The utility model has the advantages of using an external steel liner to bear pressure, and using a silicone rubber liner to withstand temperature and corrosion. There is no contact between water and the steel liner, there is no water corrosion on the metal, and it will never leak. '

[Brief Description of the Drawings]

FIG. 1 is a schematic structural diagram of an embodiment of the present invention, and FIG. 2 is a structural schematic diagram of another embodiment of the present invention.

【detailed description】

Example one

The inner liner of the composite electric water heater includes a steel inner liner housing 1, a rubber inner liner 2, and a built-in heater 3. The rubber inner liner 2 is a silicon rubber inner liner. The outer shape of the rubber liner is consistent with the outer ¾ of the steel liner shell 1, and the specifications and dimensions of the rubber liner 2 are consistent with the size of the inner wall of the steel liner shell 1. The rubber liner 2 is arranged in a steel liner housing 1. The lower end of the steel liner housing 1 is respectively welded with the natural water inlet 4, the water outlet 5, and the rubber liner .2 at the lower end and located at the water inlet 4 and the outlet. Corresponding parts of the water inlet 5 are respectively fixed with a rubber water inlet pipe 6 and a rubber water outlet pipe 7, and the rubber water inlet pipe 6 and the rubber water outlet pipe 7 are silicone rubber water inlets, respectively. Tube silicon ¾ glue out * tube. The rubber hose 6 and the rubber outlet pipe 7 are inserted into the water inlet 4 and the water outlet 5, respectively, and rubber is fixedly connected to the lower ends of the rubber inlet pipe 6 and the rubber outlet pipe 7 and located at the outer ends of the inlet 4 and the water outlet 5, respectively. Rubber pad 8, rubber pad 8 is silicone rubber, ¾ rubber pad 8 matches the heads of water inlet 4 and water outlet 5, respectively. Rubber inlet pipe ^: ¾ rubber outlet pipe 7, rubber pad? It is a one-time molding structure with the rubber liner 2 respectively. ¾ The rubber liner 2 is located at the side of the steel liner housing 1-the side seal is extended and fixed with an O-shaped rubber ring 9. The P-shaped rubber ring 9 is an O-type silicone rubber ring. The O-shaped rubber apron 9 and the rubber inner liner 2 have a ploughing structure. The front end of the built-in heater .3 is set in the rubber liner 2. The rear end of the built-in heater 3 is sealed on the stainless steel flange 10, and the stainless steel flange 10 is buckled on the seal of the steel liner housing 1. On the other hand, the stainless steel flange 10 is in close contact with the O-shaped rubber ring 9 ^. .

Example two

'The second embodiment has the same structural base as the first embodiment, except that when a double-bladder water heater is used, the upper end of one of the steel liner shells 1 of the composite liner is fixedly provided with a water inlet 11 and The water inlet connection 12 is fixedly connected to the rubber inlet connection pipe 13 and the rubber outlet connection pipe 14 at the upper end of the rubber liner 2 in the steel liner housing 1 corresponding to the water inlet connection 11 and the water outlet connection 12 respectively. The rubber water inlet connection pipe 13 and the rubber water outlet connection pipe 14 are respectively inserted in the water inlet connection 11 and the water outlet connection 12. Rubber rubber pads 8 are fixed on the upper ends of the rubber water inlet connection pipe 13 and the rubber water outlet connection pipe 14 and located at the outer ends of the water inlet connection 11 and the water outlet connection 12, respectively. Corresponding to the head of the water outlet connection port 12, the rubber water inlet connection pipe 13, the rubber water outlet connection pipe 14, the rubber pad 8 and the rubber liner 2 are formed into a single molding structure, respectively. The water inlet connection port 11 and the water outlet connection port 12 are sealedly connected to the lower end water inlet 4 and the water outlet 5 of another steel liner case 1 of a composite liner through a stainless steel part.

Claims

Rights request

1. The composite electric water heater liner includes a steel liner housing (1) and a built-in heater (3), and the rear end of the built-in heater (3) is sealed and fixed on a stainless steel flange <10). The front end sealing buckle of the flange (10) is arranged on the seal of the steel liner shell (1), which is characterized in that the steel liner shell (1) is provided with a rubber liner (2), a rubber liner The shape of (2) is consistent with the shape of the inner wall of the steel liner housing (1).

2. The inner liner of a composite electric water heater according to claim 1, characterized in that the lower end of the rubber inner liner (2) is located at the water inlet (4) and the water outlet of the lower end of the steel inner liner housing (1). (5) A rubber decanter pipe (6) and a rubber outlet pipe (7) are fixedly arranged at the corresponding positions, and the rubber inlet pipe (6) and the rubber outlet pipe (7) are respectively inserted from the inner side of the steel inner casing (1). It is set in the water inlet (4) and the water outlet (5). The lower ends of the rubber water inlet pipe (6) and the rubber water outlet pipe (7) are located at the water inlet.

(4) and the outer end of the water outlet (5) are respectively fixed with a rubber pad (8), a rubber inlet pipe (6), a rubber outlet pipe (7), a rubber pad (8) and a rubber liner (2) ) Is a one-shot structure.

3. The inner liner of a composite electric water heater according to claim 1, characterized in that the rubber inner liner (2) is located on a side of the steel inner liner housing (1), and a type O rubber is fixedly extended to extend outwardly. The rubber ring (9), type 0 rubber ring (9) and rubber liner (2) are formed in one time. The stainless steel flange (10) and the type 0 rubber ring (9) are closely matched.

4. The inner liner of a composite electric water heater according to claim 1, characterized in that the inner wall of the steel inner liner housing (1) is firmly connected to the outer wall of the rubber inner liner (2).

5. The composite electric water heater liner according to claim 1, wherein the rubber liner (2) is a silicone rubber liner.

6. The inner liner of a composite electric water heater according to claim 2, characterized in that the rubber water inlet pipe (6) and the rubber water outlet pipe (7) are respectively a silicone rubber water inlet pipe and a silicone rubber water outlet pipe.

7. The inner liner of a composite electric water heater according to claim 2, wherein the rubber pad (8) is a silicone rubber pad. .

8. The inner liner of a composite electric water heater according to claim 3, characterized in that said 0-type rubber ring (9) is a silicone rubber pad.