CN101592400A - High-temperature air stainless steel tube electric heater - Google Patents
High-temperature air stainless steel tube electric heater Download PDFInfo
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- CN101592400A CN101592400A CNA2009101471171A CN200910147117A CN101592400A CN 101592400 A CN101592400 A CN 101592400A CN A2009101471171 A CNA2009101471171 A CN A2009101471171A CN 200910147117 A CN200910147117 A CN 200910147117A CN 101592400 A CN101592400 A CN 101592400A
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- stainless steel
- kuppe
- electric heater
- stationary barrier
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Abstract
The invention belongs to the air electric heating equipment, relate to a kind of high-temperature air stainless steel tube electric heater.Electric heater comprises stainless steel heating tube, stationary barrier and heater hot junction shell, on stationary barrier, evenly arrange airflow hole, kuppe of the arranged outside of stationary barrier, kuppe is a cone, cone bottom surrounds on the stationary barrier all airflow holes or stainless steel heating tube and is welded on the stationary barrier, the top of kuppe and the welding of electric heater hot junction outlet(discharge) flange dish are fixing, and kuppe and heater hot junction shell form non-airtight separate cavities.The invention enables the efficiency of heating surface to bring up to about 95% from about 85%, the time that makes air-flow be heated to maximum temperature from normal temperature shortened to about 2 minutes from about 5 minutes.The maximum heating temperature of electric heater is brought up to about 800 ℃ from about 600 ℃.Heater hot junction discharge case temperature is reduced to about 280 ℃ significantly from about 500 ℃.
Description
Technical field
The invention belongs to the air electric heating equipment, relate to a kind of high-temperature air stainless steel tube electric heater.
Background technology
At present, the stainless steel tube electric heater that is used for the air draught heating is subjected to the restriction of material property, in order to guarantee structural strength, maximum heating temperature can only arrive about 600 ℃, simple in order to process, the heating stainless steel tube is fixed on the dividing plate, and air-flow passes through from heating stainless steel tube inside, from the outlet output of electric heater hot junction, thermal current directly impacts electric heater hot junction discharge case.The electric heater of this structure, the heating maximum temperature can only arrive about 600 ℃, because heating stainless steel tube and air-flow adopt the intraductal heat exchange form, makes efficient have only about 85%, air-flow needs about 5 minutes time from the time that normal temperature is heated to about 600 ℃, causes the waste of source of the gas.
Summary of the invention
The objective of the invention is to propose the high-temperature air stainless steel tube electric heater that a kind of firing rate is fast, efficient is high.Technical solution of the present invention is, comprise stainless steel heating tube, stationary barrier and heater hot junction shell, evenly arrange airflow hole on stationary barrier, the diameter of airflow hole is 3～6mm, and the quantity of airflow hole is 0.3～0.6 times of quantity of stainless steel heating tube; Kuppe of the arranged outside of stationary barrier, kuppe is a cone, cone bottom surrounds on the stationary barrier all airflow holes or stainless steel heating tube and is welded on the stationary barrier, the top of kuppe and the welding of electric heater hot junction outlet(discharge) flange dish are fixing, and kuppe and heater hot junction shell form non-airtight separate cavities.
When the material of described kuppe is lower than 600 ℃ in the maximum temperature when electric heater, select ordinary stainless steel plate for use, when the maximum temperature of electric heater is higher than 600 ℃, select the high temperature stainless steel plate for use.
Advantage that the present invention has and beneficial effect,
The present invention has airflow hole on stationary barrier, make the mode of heating of electric heater change the heating of inside and outside both sides into by the inboard heating of electrical heating stainless steel tube, make the efficiency of heating surface bring up to about 95% from about 85%, the time that makes air-flow be heated to maximum temperature from normal temperature shortened to about 2 minutes from about 5 minutes.Increased kuppe at the thermal current port of export, made thermal current no longer directly impact the electric heater shell, about the maximum heating temperature that guarantees stainless steel tube electric heater under the prerequisite of structural strength is from 600 ℃, brought up to about 800 ℃.Heater hot junction discharge case temperature is reduced to about 280 ℃ significantly from about 500 ℃, makes the structural strength of electric heater more reliable.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of stationary barrier of the present invention.
The specific embodiment
Electric heater comprises stainless steel heating tube 2, stationary barrier 5 and heater hot junction shell 6, evenly arranges airflow hole 1 on stationary barrier 5, and the diameter of airflow hole 1 is 3～6mm, and the quantity of airflow hole 1 is 0.3～0.6 times of quantity of stainless steel heating tube 2; Kuppe 3 of the arranged outside of stationary barrier 5, kuppe 3 is a cone, cone bottom surrounds on the stationary barrier 5 all airflow holes 1 or stainless steel heating tube 2 and is welded on the stationary barrier 5, the top of kuppe 3 and 7 welding of electric heater hot junction outlet(discharge) flange dish are fixing, and kuppe 3 forms non-airtight separate cavities 4 with heater hot junction shell 6.
When the material of kuppe 3 is lower than 600 ℃ in the maximum temperature when electric heater, select ordinary stainless steel plate for use, when the maximum temperature of electric heater is higher than 600 ℃, select the high temperature stainless steel plate for use.
Embodiment one
At certain flow 100kg/h, pressure 3Mpa, the single-phase HTHP air of the 45kW stainless steel tube electric heater that constitutes by 16 stainless steel heating tubes of 600 ℃ of maximum temperatures, on the stationary barrier 5 of fixing stainless steel heating tube 2,6 airflow holes 1 that diameter is 3mm have been arranged, the air flow guiding cover 3 that adds the common stainless steel material at the thermal current port of export, make direct IMPULSIVE HEATING device shell 6 of thermal current, make air-flow and stainless steel heating tube inside and outside wall all with the air-flow heat exchange, efficient reaches about 93%, air-flow from the time that normal temperature is heated to maximum temperature be about 2 minutes, heater hot junction skin temperature has only about 280 ℃.
Embodiment two
At certain flow 600kg/h, pressure 3Mpa, the 125kW three-phase HTHP air stainless steel tube electric heater that is made of 48 stainless steel heating tubes of 750 ℃ of maximum temperatures has been arranged 18 airflow holes 1 that diameter is 3mm on the dividing plate 5 of fixing stainless steel heating tube 2, increase temperature the air flow guiding cover 3 of stainless steel material at the thermal current port of export, make direct IMPULSIVE HEATING device shell 6 of thermal current, make air-flow and stainless steel heating tube inside and outside wall all with the air-flow heat exchange, efficient reaches about 95%, air-flow from the time that normal temperature is heated to maximum temperature be about 2 minutes, heater hot junction skin temperature has only about 320 ℃.
Claims (2)
1 one kinds of high-temperature air stainless steel tube electric heaters, comprise stainless steel heating tube (2), stationary barrier (5) and heater hot junction shell (6), it is characterized in that, go up evenly layout airflow hole (1) at stationary barrier (5), the diameter of airflow hole (1) is 3～6mm, and the quantity of airflow hole (1) is 0.3～0.6 times of quantity of stainless steel heating tube (2); A kuppe of the arranged outside of stationary barrier (5) (3), kuppe (3) is a cone, cone bottom encirclement stationary barrier (5) is gone up all airflow holes (1) or stainless steel heating tube (2) and is welded on the stationary barrier (5), the top of kuppe (3) and electric heater hot junction outlet(discharge) flange dish (7) welding are fixing, and kuppe (3) forms non-airtight separate cavities (4) with heater hot junction shell (6).
2 high-temperature air stainless steel tube electric heaters according to claim 1, it is characterized in that the material of described kuppe (3) is selected ordinary stainless steel plate for use when the maximum temperature when electric heater is lower than 600 ℃, when the maximum temperature of electric heater is higher than 600 ℃, select the high temperature stainless steel plate for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101471171A CN101592400B (en) | 2009-06-04 | 2009-06-04 | High-temperature air stainless steel tube electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101471171A CN101592400B (en) | 2009-06-04 | 2009-06-04 | High-temperature air stainless steel tube electric heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101592400A true CN101592400A (en) | 2009-12-02 |
| CN101592400B CN101592400B (en) | 2012-02-22 |
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ID=41407189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101471171A Active CN101592400B (en) | 2009-06-04 | 2009-06-04 | High-temperature air stainless steel tube electric heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN101592400B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734922A (en) * | 2011-04-07 | 2012-10-17 | 镇江荣剑防爆电器有限公司 | Electric heater for high temperature air |
| CN105239322A (en) * | 2015-10-12 | 2016-01-13 | 安徽安泽电工股份有限公司 | Novel heating device of washing machine |
| CN108344174A (en) * | 2018-01-17 | 2018-07-31 | 沈阳航空航天大学 | Electric airheater with seepage flow hole in a kind of heating tube |
| CN110068140A (en) * | 2019-03-19 | 2019-07-30 | 南京航空航天大学 | A kind of approximation isothermal wall pipe is interior to heat high-temperature air heater |
| CN112503763A (en) * | 2020-11-04 | 2021-03-16 | 北京航空航天大学 | Small-flow air ultrahigh-temperature electric heating device |
-
2009
- 2009-06-04 CN CN2009101471171A patent/CN101592400B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734922A (en) * | 2011-04-07 | 2012-10-17 | 镇江荣剑防爆电器有限公司 | Electric heater for high temperature air |
| CN105239322A (en) * | 2015-10-12 | 2016-01-13 | 安徽安泽电工股份有限公司 | Novel heating device of washing machine |
| CN108344174A (en) * | 2018-01-17 | 2018-07-31 | 沈阳航空航天大学 | Electric airheater with seepage flow hole in a kind of heating tube |
| CN110068140A (en) * | 2019-03-19 | 2019-07-30 | 南京航空航天大学 | A kind of approximation isothermal wall pipe is interior to heat high-temperature air heater |
| CN112503763A (en) * | 2020-11-04 | 2021-03-16 | 北京航空航天大学 | Small-flow air ultrahigh-temperature electric heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101592400B (en) | 2012-02-22 |
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