CN2615994Y - Gilding electric heating tube - Google Patents
Gilding electric heating tube Download PDFInfo
- Publication number
- CN2615994Y CN2615994Y CN 03221521 CN03221521U CN2615994Y CN 2615994 Y CN2615994 Y CN 2615994Y CN 03221521 CN03221521 CN 03221521 CN 03221521 U CN03221521 U CN 03221521U CN 2615994 Y CN2615994 Y CN 2615994Y
- Authority
- CN
- China
- Prior art keywords
- electric heating
- gold
- heating tube
- metal sleeve
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an electric heating pipe, in particular to the electronic heating pipe of a domestic electric water heater. The electric heating pipe comprises an electric heating component, heat-conducting insulating material and a metal sleeve pipe, the outside rampart of the metal sleeve pipe is equipped with a gold alloy cladding layer, the surface roughness concentration of which is less than 0.8 Mu Mega and the gold-containing of which is more than 18 K (Karat). Because of the firm combination of the gold alloy cladding layer and the base body of the metal sleeve pipe, the surface is very smooth, the heat-conducting performance is excellent, the chemical nature is stable, the corrosion and the high temperature are resisted, thereby the electric heating pipe of the utility model has the advantages of the reliable performance, not easy gathering water scale and the long service life.
Description
Technical field
The utility model relates to a kind of electric heating tube, especially a kind of electric heating tube of domestic, electric water heater.
Background technology
The domestic, electric water heater that existing market is sold has incrustation scale and assemble on the metal surface of electric heating tube, and incrustation scale is constantly thickeied with the growth of service time after use after a while.Because the heat conductivility of incrustation scale is poor, the result not only influences the efficiency of heating surface of electric heating tube, makes the metal sleeve of electric heating tube overheated, and can cause metal sleeve local deformation or damage, even might cause taking place explosion.In case metal sleeve breaks, the water power of electric heater is isolated destroyed, is easy to cause electric shock accidents.
Above reason makes that the electric heating tube of existing electric heater is shorter useful life, change comparatively frequent, thereby increased the use maintenance cost of electric heater.
Summary of the invention
The purpose of this utility model is: the problem at above-mentioned existing electric heating tube exists, and provide a kind of and be difficult for incrusted gold-plated electric heating tube, thereby improve its useful life, increase the usage safety performance of water-storage electric heater, reduce and use maintenance cost.
Studies show that the main cause that incrustation scale is assembled on the electric heating tube surface easily is that common heating rod metal sleeve surface is more coarse.When near the factor that has anode stub or other to bring out the generation electrochemical reaction generates water-fast Mg (OH)
2, CaCO
3During Deng sediment, just very easily attached these deposits of collection in heating rod surface, particularly high-temperature region and form incrustation scale.
On this research basis, the applicant has worked out to be issued to the technical scheme of foregoing invention purpose: gold-plated electric heating tube of the present utility model is made up of electrical heating elements, heat-conducting insulation material and metal sleeve, its improvements are: the outer wall of metal sleeve is from inside to outside with the nickel chloride layer, nickel metal layer, and surface roughness less than 0.8 μ m, gold content greater than the proof gold of 18K or the alloy layer of gold.
In order to obtain perfect performance, the nickel chloride layer should be fine and close firm, and nickel metal layer thickness is at least 5 μ m, the alloy layer thickness at least 0.25 μ m of proof gold or gold.
Because the alloy layer and the metal sleeve matrix bond of above adhesion layer and proof gold or gold are firm, the surface is very smooth, good heat conductivity, chemical property is stable, corrosion-resistant, high temperature resistant, and therefore electric heating tube of the present utility model has dependable performance, difficult advantage of assembling incrustation scale, long service life.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.
Embodiment
Embodiment one
The gold-plated electric heating tube of present embodiment by electrical heating elements, be enclosed within the outer metal sleeve of electrical heating elements and the heat-conducting insulation material that is filled in is between the two formed.As can be seen from Figure 1, be coated with chloride layer 3, nickel metal layer 2 and the 24K proof gold layer 1 of nickel from inside to outside at the outer wall of metal sleeve 4.Wherein, 3 layers of densification of nickel chloride are firm, and nickel metal layer 2 thickness are greater than 5 μ m, and proof gold coating 1 thickness is greater than 0.25 μ m.The chloride layer 3 of nickel, nickel metal layer 2 can improve the flat bed degree of proof gold layer 1 as adhesion layer, make its surface roughness be easy to be less than 0.8 μ m.
Facts have proved, adopt the water-storage electric heater of the gold-plated electric heating tube of present embodiment, on the surface of electric heating tube, be difficult for assembling in the hot water because of anode stub or other and bring out sediment that electrochemical reaction generates (as Mg (OH)
2And CaCO
3Deng), that is be not easy to form incrustation scale.Electric heating tube not only can keep good heat-conducting for a long time, and does not need frequent maintenance, long service life, thereby can improve the security performance of electric heater, reduce and use maintenance cost.After estimating to release, consumer's welcome will be subjected to.
Embodiment two
The gold-plated electric heating tube basic condition and the embodiment one of present embodiment are similar.Difference is: the outermost 24K proof gold of electric heating tube coating 1 is substituted by the alloy-layer of 22K gold.Experiment shows, so also can reach same action effect.
Claims (3)
1. gold-plated electric heating tube, form by electrical heating elements, heat-conducting insulation material and metal sleeve, it is characterized in that: the outer wall of described metal sleeve is from inside to outside with the nickel chloride layer, nickel metal layer, and surface roughness less than 0.8 μ m, gold content greater than the proof gold of 18K or the alloy layer of gold.
2. according to the described gold-plated electric heating tube of claim 1, it is characterized in that: described nickel metal layer thickness is at least 5 μ m, the alloy layer thickness at least 0.25 μ m of described proof gold or gold.
3. according to the described gold-plated electric heating tube of claim 2, it is characterized in that: the outer wall of described metal sleeve is coated with the alloy-layer of chloride layer, nickel metal layer and the 22K gold of nickel from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221521 CN2615994Y (en) | 2003-04-29 | 2003-04-29 | Gilding electric heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221521 CN2615994Y (en) | 2003-04-29 | 2003-04-29 | Gilding electric heating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2615994Y true CN2615994Y (en) | 2004-05-12 |
Family
ID=34244698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03221521 Expired - Lifetime CN2615994Y (en) | 2003-04-29 | 2003-04-29 | Gilding electric heating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2615994Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121898A (en) * | 2011-01-19 | 2011-07-13 | 云南烟草科学研究院 | Near-infrared sample detection device |
| CN103499145A (en) * | 2013-09-25 | 2014-01-08 | 王兆进 | Heating device of instantaneous water heater |
-
2003
- 2003-04-29 CN CN 03221521 patent/CN2615994Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121898A (en) * | 2011-01-19 | 2011-07-13 | 云南烟草科学研究院 | Near-infrared sample detection device |
| CN103499145A (en) * | 2013-09-25 | 2014-01-08 | 王兆进 | Heating device of instantaneous water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130502 Granted publication date: 20040512 |