CN201229053Y - Chanel-type electric heater - Google Patents
Chanel-type electric heater Download PDFInfo
- Publication number
- CN201229053Y CN201229053Y CNU2008200841007U CN200820084100U CN201229053Y CN 201229053 Y CN201229053 Y CN 201229053Y CN U2008200841007 U CNU2008200841007 U CN U2008200841007U CN 200820084100 U CN200820084100 U CN 200820084100U CN 201229053 Y CN201229053 Y CN 201229053Y
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- China
- Prior art keywords
- heating element
- metal tube
- metal pipe
- electric heater
- helical
- Prior art date
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- Expired - Fee Related
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- Resistance Heating (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The utility model discloses a channel type electric heater, which comprises an inner metal pipe and an outer metal pipe arranged on the outer side of the inner metal pipe, wherein a heating element is arranged between the inner metal pipe and the outer metal pipe, the heating element is in helical shape, and the helical heating element is coiled on the inner metal pipe, and the inner walls of the outer metal pipe is contacted with the outer side of the helical heating element. Owing to adopting the technical scheme, the contact heat transfer surface area is greatly increased, and the heat absorbing time is effectively prolonged, as liquid passes through the helical channel which is larger than a straight channel, thereby fully heating up fluid, and meeting the requirements of higher power density on a head region and lower power density on a tail region through changing the helical pitch distribution of the embedded electric heating element. The channel type electric heater effectively improves the performance of the electric heater, and increases service life.
Description
Technical field
The utility model relates to a kind of electric heater that is used for flowing gas or liquid, a kind of channel type electric heater of more specifically saying so.
Background technology
At present, the electric heater that is used for flowing gas or liquid, normally make flange-cooled through type electric heater or heater element and when fluid is flowed through, be heated among directly placing fluid, perhaps allow fluid flow through to coil into be immersed in the screw type pipe in the electrically heated temperature be heated.Existing a kind of channel type electric heater comprises the fluid heat tunnel that is surrounded by interior metal tube, metal tube outside also establish in the outside of interior metal tube, interior metal tube and outside be provided with heating element heater between the metal tube, the outside of outer metal tube is provided with heat-insulation layer.After this road formula electric heater heated by the internal metal tube of heating element heater, fluid was flowed through heat tunnel and is obtained heating.Owing to above-mentioned through type electric heater is adopt to increase the heat absorption surface area or increase the electric heater that fluid was realized in the heat time heating time in the temperature.Yet concentrate at some energy heights and (to reach 20w/cm such as device power
3) or heater volume when having the situation of strict restriction to take place, general above-mentioned universal architecture shows tangible shortcoming: volume is excessive, and power distributes and can not raise gradually and reduce with the temperature that is heated fluid, causes the heater life-span not long.
Summary of the invention
For overcoming above-mentioned deficiency, the problem that the utility model quasi-solution is determined provides and can fully heat fast, and the channel type electric heater of long service life.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of channel type electric heater, it comprises the outer metal tube in the outside of interior metal tube, metal tube, interior metal tube and outside be provided with heating element heater between the metal tube, described heating element heater is a helical form, on the metal tube, described outer inner wall of metal tube contacted with the spiral helicine heating element heater outside in described spiral helicine heating element heater was coiled in.
The described outer metal tube outside is provided with outer casing, and described outer casing is provided with heat-insulation layer.
As improvement, to fluid export mouth direction, the spiral helicine pitch of described heating element heater reduces gradually from close fluid introducing port.
Owing to adopt technique scheme, compared with prior art, the characteristics of channel type electric heater maximum of the present utility model are that described outer inner wall of metal tube contacts with the spiral helicine heating element heater outside.Like this, the fluid passage is actually the helical duct that the helical form heating element heater surrounds.Be heated the fluid helical duct that surrounds by heat generating components of flowing through and fully heat, increase the heat absorption time of the fluid and the area of heating surface and the double effects of heat absorption surface area greatly.The pitch of adjustable screw passage distributes simultaneously, and promptly power density distribution effectively prolongs the service life of electric heating device.The electrical heating elements that pitch is not equally spaced will be embedded between the double-layer coaxial metal tube, force cold fluid to enter the helical duct between the inner and outer pipes and be heated fluid, by outer metal tube termination heat outputting attitude fluid, the metal tube outside adds heat-insulation layer and case outside.The beneficial effects of the utility model are: because liquid is to walk the helical duct more much longer than straight channel, thereby increased the transmission of heat by contact surface area greatly and increased the heat absorption time effectively, thereby fluid is fully heated, and the pitch distribution by the electrical heating elements that change to embed simultaneously etc. enters head zone power density height and the low requirement of tail region power density.Improve the performance of electric heater effectively, improved service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: metal tube in the 1-, the outer metal tube of 2-, the end socket of metal tube two ends in the 3-electrical heating elements, 4-, 5-fluid export mouth, 6-fluid introducing port, 7-heat-insulation layer, 8-outer casing, the outer inner wall of metal tube of 9-, the 10-heating element heater outside.
The specific embodiment
As shown in Figure 1, channel type electric heater of the present utility model, it comprises the outer metal tube 2 in the outside of interior metal tube 1, metal tube 1, interior metal tube 1 and outside be provided with heating element heater 3 between the metal tube 2,, described heating element heater 3 is a helical form, the end that described spiral helicine heating element heater 3 is coiled in outer metal tube 2 on the interior metal tube 1 surrounds fluid introducing port 6, the other end surrounds fluid export mouth 5, and the channel type electric heater structure of said structure and prior art is similar, therefore introduces no longer in detail.
Channel type electric heater characteristics of the present utility model are: described outer inner wall of metal tube 9 contacts with the spiral helicine heating element heater outside 10.Two ends of metal tube 1 have end socket 4 in described, and described heating element heater 3 shape in the shape of a spiral distributes, and makes the helical form heating element heater surround spiral helicine fluid passage like this.Described in addition outer metal tube 2 outsides also can be provided with outer casing 8, and described outer casing 8 is provided with heat-insulation layer.
As improvement, to fluid export mouth 5 directions, the spiral helicine pitch of described heating element heater 3 reduces gradually from close fluid introducing port 6.
Concrete preparation method: select the interior metal tube 1 of certain diameter closely to seal in to have turned to the spiral helicine little and electrical heating elements 3 of certain power that other pitch is big of pitch of fluid that enters for use.Closely be inserted in again in the outer metal tube 2, pipe welding end socket 4 in interior metal tube 1 adds, fluid introducing port 6 is installed in one of outer tube charging additional, the other end installs fluid export mouth 5 additional, outer metal tube 2 outsides add heat-insulation layer 7, and add outer casing 8 helical duct formula electric heater.
Claims (3)
1, a kind of channel type electric heater, it comprises the outer metal tube (2) in the outside of interior metal tube (1), metal tube (1), interior metal tube (1) and outside be provided with heating element heater (3) between the metal tube (2), described heating element heater (3) is a helical form, described spiral helicine heating element heater (3) is coiled on the interior metal tube (1), it is characterized in that described outer inner wall of metal tube (9) contacts with the spiral helicine heating element heater outside (10).
2, channel type electric heater according to claim 1 is characterized in that described outer metal tube (2) outside is provided with outer casing (8), and described outer casing (8) is provided with heat-insulation layer.
3, road according to claim 1 and 2 formula electric heater, it is characterized in that near fluid introducing port (6) to fluid export mouth (5) direction, the spiral helicine pitch of described heating element heater (3) reduces gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200841007U CN201229053Y (en) | 2008-03-14 | 2008-03-14 | Chanel-type electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200841007U CN201229053Y (en) | 2008-03-14 | 2008-03-14 | Chanel-type electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229053Y true CN201229053Y (en) | 2009-04-29 |
Family
ID=40633996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200841007U Expired - Fee Related CN201229053Y (en) | 2008-03-14 | 2008-03-14 | Chanel-type electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229053Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180654A (en) * | 2010-07-23 | 2013-06-26 | 福士汽车配套部件责任有限公司 | Heatable medium pipe and method for producing same |
| CN104024760A (en) * | 2011-12-07 | 2014-09-03 | 福士汽车配套部件责任有限公司 | Assembled heatable media line comprising media line having at least two heating elements arranged on the exterior thereof, and method for the production thereof |
| CN110301165A (en) * | 2017-03-30 | 2019-10-01 | 东京毅力科创株式会社 | The manufacturing method of fluid heater, fluid control device and fluid heater |
-
2008
- 2008-03-14 CN CNU2008200841007U patent/CN201229053Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180654A (en) * | 2010-07-23 | 2013-06-26 | 福士汽车配套部件责任有限公司 | Heatable medium pipe and method for producing same |
| US9103481B2 (en) | 2010-07-23 | 2015-08-11 | Voss Automotive Gmbh | Heatable medium pipe and method for producing same |
| CN103180654B (en) * | 2010-07-23 | 2015-08-19 | 福士汽车配套部件责任有限公司 | Can heat medium pipe and manufacture method thereof |
| CN104024760A (en) * | 2011-12-07 | 2014-09-03 | 福士汽车配套部件责任有限公司 | Assembled heatable media line comprising media line having at least two heating elements arranged on the exterior thereof, and method for the production thereof |
| CN104024760B (en) * | 2011-12-07 | 2017-09-26 | 福士汽车配套部件责任有限公司 | Dielectric line and its manufacture method can be heated by being included in the assembling of the outside dielectric line for being provided with least two heating element heaters |
| CN110301165A (en) * | 2017-03-30 | 2019-10-01 | 东京毅力科创株式会社 | The manufacturing method of fluid heater, fluid control device and fluid heater |
| CN110301165B (en) * | 2017-03-30 | 2021-11-09 | 东京毅力科创株式会社 | Fluid heater, fluid control device, and method for manufacturing fluid heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Lijuan Document name: Notification of patent rights granted to utility models and formalities for registration |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20110314 |