CN104202854B - A kind of electric heater unit of built-in pair of overheat protector - Google Patents
A kind of electric heater unit of built-in pair of overheat protector Download PDFInfo
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- CN104202854B CN104202854B CN201410476313.4A CN201410476313A CN104202854B CN 104202854 B CN104202854 B CN 104202854B CN 201410476313 A CN201410476313 A CN 201410476313A CN 104202854 B CN104202854 B CN 104202854B
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- eduction rod
- zero line
- electrothermal tube
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Abstract
The invention belongs to electric heating equipment technical field, relate to a kind of electric heater unit being built-in with overheat protector, the two ends of electrothermal tube are equipped with the identical live wire protector of structure and zero line protector respectively, the two ends of Thermal Cutoffs respectively plug-in mounting are socketed in outer eduction rod and interior eduction rod, live wire protector China and foreign countries eduction rod connects extraction first terminals, zero line protector China and foreign countries eduction rod connects extraction second terminals, live wire protector is all fixedly connected with the termination of the resistance wire of electrothermal tube inside with the interior eduction rod in zero line protector, resistance wire is filled with powdery filled media in the space in electrothermal tube, be fixedly connected with by flange between the two ends of electrothermal tube, the junction of flange and electrothermal tube is filled with rubber blanket, and the centre riveted joint of flange has bolt, and the flange on bolt side is welded with temperature sensor, its structure is simple, and principle is reliable, design science, low cost of manufacture, and heat-transfer rate is fast, and control precisely, fail safe is high, environmental friendliness.
Description
Technical field:
The invention belongs to electric heating equipment technical field, relate to a kind of electric heater unit being built-in with overheat protector, when heater element exceedes specified temp, heating power supply can be cut off and be burned to avoid heater element, prevent security incident.
Background technology:
Electric heater unit is a kind of high-quality long-life electric heating equipment of international popular, is mainly used in heating up to the liquid medium flowed and gaseous medium, protecting mild heat.Commonly fluid explosion-proof electric heater in the market, the operation principle of this electric heater consumes electric energy to be converted to heat energy and to heat needing heated material, cryogen medium enters its input port under pressure by pipeline at work, along the inner specific heat exchange runner of electric-heating container, take away the high-temperature hot energy produced in electric heating element work, heated medium temperature is raised; Electric heater internal control system regulates electric heater power output automatically according to the temperature sensor signal of delivery outlet, makes the medium temperature of delivery outlet even; When heater element overtemperature, the independently overtemperature protection system of heater element can cut off heating power supply at once, avoids heated material overtemperature to cause coking, rotten, carbonization, even causes heater element to burn out, thus effectively extends electric heater useful life.Also electric heater unit or the electric heater of multiple band overheat protector is had in existing patented technology, such as a kind of long acting type anti-explosion electric heater disclosed in Chinese patent 2006200743518, it fixes explosion-proof chamber in heating container upper end by sleeve pipe, and adopts flat seal to increase electric heater use safety degree and life-span; A kind of anti-explosion electric heating tube disclosed in Chinese patent 00267306.1, it is electrically connected with protective tube in one end of electrothermal tube by extraction pole, to realize direct fire prevention fast, timely and effectively and explosion prevention function; A kind of heating element disclosed in Chinese patent 200780046564.0, electrical heating resistor is connected with hot fuse by electric connector by it, to shorten the passing time between thermal source and hot fuse, increases the reaction sensitivity of hot fuse; A kind of electric heating tube of built-in thermal cut-off disclosed in Chinese patent 02265343.0, it has thermal cut-off, to improve temperature-controlled precision and the reliability of overtemperature protection at the two ends of electric heating tube by interior eduction rod and the riveted joint of outer eduction rod; The disclosed a kind of built-in pair of temperature controlled electric heat pipe of Chinese patent 201120324628.9, temperature control safety element is arranged on radiating tube port by upper eduction rod and lower eduction rod by it; In all kinds of electric heater disclosed in above-mentioned patented technology and electric heating tube, with overtemperature protection system accuracy not high, sensitivity is lower, and can not realize good docking with live wire end and zero line side in actual applications.Therefore the present invention seeks to design a kind of novel electric heater unit being built-in with overtemperature protection system; by arranging dissimilar overtemperature protection system at electric heating tube two ends; to realize the overcurrent protection of electric heater unit to live wire end and zero line side respectively, there is good practical value and economic benefit.
Summary of the invention:
The object of the invention is to the shortcoming overcoming prior art existence, seek to design the electric heater unit that a kind of built-in pair of overheat protector is provided, can effectively prevent electric heater unit dry combustion method and cause security incident.
To achieve these goals, the electric heater unit agent structure that the present invention relates to comprises flange, bolt, temperature sensor, first terminals, outer eduction rod, rubber blanket, protective sleeve, Thermal Cutoffs, interior eduction rod, resistance wire, filled media, electrothermal tube, second terminals, live wire protector and zero line protector, the two ends of the electrothermal tube of hollow type steel-tube construction are built-in is respectively equipped with live wire protector and zero line protector, live wire protector is identical with the structure of zero line protector, include outer eduction rod, protective sleeve, Thermal Cutoffs and interior eduction rod, the two ends of Thermal Cutoffs respectively plug-in mounting are socketed in outer eduction rod and interior eduction rod, the junction jacket formula of Thermal Cutoffs and two ends and outer eduction rod and interior eduction rod is shaped with protective sleeve, to increase resistance to compression and fire retardancy, the other end of live wire protector China and foreign countries eduction rod connects extraction first terminals, the other end of zero line protector China and foreign countries eduction rod connects extraction second terminals, live wire protector is all fixedly connected with the termination wound form of the spiral resistance wire of electrothermal tube inside with the other end of the interior eduction rod in zero line protector, and in the space of resistance wire in electrothermal tube, dense packing effect has powdery filled media, be fixedly connected with by flange between the two ends of electrothermal tube, the junction sealed type of flange and electrothermal tube is filled with rubber blanket, the centre of flange fixes riveted joint bolt, the flange on bolt side is fixedly welded with temperature sensor, realize docking with ambient temperature measuring instrument, so that measure the temperature of electric heater unit.
Thermistor temperature sensor selected by the temperature sensor that the present invention relates to; Protective sleeve is polybutylene terephthalate (PBT) (PBT) pipe or high polymer polypropylene (PP) pipe of hollow type tubular structure, to play good insulation, resistance to compression, heat insulation, explosion-proof and anti-flaming function; Crystal magnesium oxide (MgO) powder that powdery filled media selects heat conductivility and insulation property all good or flake asbestos; Electrothermal tube is the stainless steel tube of nickel plating, and shape is straight shape, U-shaped, L shape, W shape, fin shape or abnormity; Thermal Cutoffs model in live wire protector is 160-170 degree, and the Thermal Cutoffs model in zero line protector is 150-160 degree; During use, live wire protector and zero line protector dock with the live wire end of external circuit and zero line side respectively.
The present invention compared with prior art, on the one hand, at the two ends of electric heating tube, live wire protector and zero line protector are set respectively according to docking demand, wherein select the Thermal Cutoffs of different size model in live wire protector and zero line protector, to realize temperature control effect more accurately; On the other hand, the adpting flange between electric heating tube two ends is fixedly welded with temperature sensor, to dock with ambient temperature measuring instrument and to realize the measurement of electric heating temperature; Its structure is simple, and principle is reliable, design science, low cost of manufacture, and heat-transfer rate is fast, and control precisely, fail safe is high, environmental friendliness.
Accompanying drawing illustrates:
Fig. 1 is agent structure principle schematic of the present invention.
Embodiment:
By embodiment, further description is made to the present invention below in conjunction with accompanying drawing.
Embodiment:
The electric heater unit agent structure that the present embodiment relates to comprises flange 1, bolt 2, temperature sensor 3, first terminals 4, outer eduction rod 5, rubber blanket 6, protective sleeve 7, Thermal Cutoffs 8, interior eduction rod 9, resistance wire 10, filled media 11, electrothermal tube 12, second terminals 13, live wire protector 14 and zero line protector 15, the two ends of the electrothermal tube 13 of hollow type steel-tube construction are built-in is respectively equipped with live wire protector 14 and zero line protector 15, live wire protector 14 is identical with the structure of zero line protector 15, include outer eduction rod 5, protective sleeve 7, Thermal Cutoffs 8 and interior eduction rod 9, the two ends of Thermal Cutoffs 8 respectively plug-in mounting are socketed in outer eduction rod 5 and interior eduction rod 9, the junction jacket formula of Thermal Cutoffs 8 and two ends and outer eduction rod 5 and interior eduction rod 9 is shaped with protective sleeve 7, to increase resistance to compression and fire retardancy, the other end of live wire protector 14 China and foreign countries eduction rod 5 connects extraction first terminals 4, the other end of zero line protector 15 China and foreign countries eduction rod 5 connects extraction second terminals 13, live wire protector 14 is all fixedly connected with the termination wound form of the spiral resistance wire 10 of electrothermal tube 12 inside with the other end of the interior eduction rod 9 in zero line protector 15, and in the space of resistance wire 10 in electrothermal tube 12, dense packing effect has powdery filled media 11, be fixedly connected with by flange 1 between the two ends of electrothermal tube 12, flange 1 is filled with rubber blanket 6 with the junction sealed type of electrothermal tube 12, the centre of flange 1 fixes riveted joint bolt 2, the flange 1 on bolt 2 side is fixedly welded with temperature sensor 3, realize docking with ambient temperature measuring instrument, so that measure the temperature of electric heater unit.
Thermistor temperature sensor selected by the temperature sensor 3 that the present embodiment relates to; Protective sleeve 7 is polybutylene terephthalate (PBT) (PBT) pipe or high polymer polypropylene (PP) pipe of hollow type tubular structure, to play good insulation, resistance to compression, heat insulation, explosion-proof and anti-flaming function; Crystal magnesium oxide (MgO) powder that powdery filled media 11 selects heat conductivility and insulation property all good or flake asbestos; Electrothermal tube 12 is the stainless steel tube of nickel plating, and shape is straight shape, U-shaped, L shape, W shape, fin shape or abnormity; Thermal Cutoffs 8 model in live wire protector 14 is 160-170 degree, and Thermal Cutoffs 8 model in zero line protector 15 is 150-160 degree; During use, live wire protector 14 and zero line protector 15 dock with the live wire end of external circuit and zero line side respectively.
Claims (1)
1. the electric heater unit of a built-in pair of overheat protector, agent structure comprises flange, bolt, temperature sensor, first terminals, outer eduction rod, rubber blanket, protective sleeve, Thermal Cutoffs, interior eduction rod, resistance wire, filled media, electrothermal tube, second terminals, live wire protector and zero line protector, the two ends of the electrothermal tube of hollow type steel-tube construction are built-in is respectively equipped with live wire protector and zero line protector, live wire protector is identical with the structure of zero line protector, include outer eduction rod, protective sleeve, Thermal Cutoffs and interior eduction rod, the two ends of Thermal Cutoffs respectively plug-in mounting are socketed in outer eduction rod and interior eduction rod, the junction jacket formula of Thermal Cutoffs and two ends and outer eduction rod and interior eduction rod is shaped with protective sleeve, to increase resistance to compression and fire retardancy, the other end of live wire protector China and foreign countries eduction rod connects extraction first terminals, the other end of zero line protector China and foreign countries eduction rod connects extraction second terminals, live wire protector is all fixedly connected with the termination wound form of the spiral resistance wire of electrothermal tube inside with the other end of the interior eduction rod in zero line protector, and in the space of resistance wire in electrothermal tube, dense packing effect has powdery filled media, be fixedly connected with by flange between the two ends of electrothermal tube, the junction sealed type of flange and electrothermal tube is filled with rubber blanket, the centre of flange fixes riveted joint bolt, the flange that it is characterized in that bolt side is fixedly welded with temperature sensor, realize docking with ambient temperature measuring instrument, so that measure the temperature of electric heater unit, electrothermal tube is the stainless steel tube of nickel plating, and shape is straight shape, U-shaped, L shape, W shape, fin shape or abnormity, Thermal Cutoffs model in live wire protector is 160-170 degree, and the Thermal Cutoffs model in zero line protector is 150-160 degree, during use, live wire protector and zero line protector dock with the live wire end of external circuit and zero line side respectively, thermistor temperature sensor selected by temperature sensor, protective sleeve is polybutylene terephthalate (PBT) pipe or the high polymer PA tube of hollow type tubular structure, to play good insulation, resistance to compression, heat insulation, explosion-proof and anti-flaming function, powdery filled media selects heat conduction and the good crystal magnesium oxide powder of electrical insulation capability or flake asbestos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476313.4A CN104202854B (en) | 2014-09-18 | 2014-09-18 | A kind of electric heater unit of built-in pair of overheat protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476313.4A CN104202854B (en) | 2014-09-18 | 2014-09-18 | A kind of electric heater unit of built-in pair of overheat protector |
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| Publication Number | Publication Date |
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| CN104202854A CN104202854A (en) | 2014-12-10 |
| CN104202854B true CN104202854B (en) | 2016-02-24 |
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| CN201410476313.4A Active CN104202854B (en) | 2014-09-18 | 2014-09-18 | A kind of electric heater unit of built-in pair of overheat protector |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| ITUB20152625A1 (en) * | 2015-07-30 | 2017-01-30 | Irca Spa | ARMORED RESISTANCE AND RELATIVE PRODUCTION PROCESS |
| CN105792391B (en) * | 2016-03-04 | 2019-03-29 | 青岛易特优电子有限公司 | A kind of electric heater unit and preparation method of abnormal shape tubular structure |
| CN106658766B (en) * | 2016-10-13 | 2022-08-09 | 安庆泰邦船舶科技有限公司 | Electric heater device for ship |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4439667A (en) * | 1980-07-11 | 1984-03-27 | Pace Incorporated | Desoldering device and improved heater assembly therefor |
| CN2563880Y (en) * | 2002-07-08 | 2003-07-30 | 河合电器(杭州)有限公司 | Electric heating tube with built-in heat fuse |
| CN101400194A (en) * | 2007-09-29 | 2009-04-01 | 江苏顺发电热材料有限公司 | Built-in double safety washing machine heating pipe and machining method thereof |
| CN202261845U (en) * | 2011-08-31 | 2012-05-30 | 青岛易特优电子有限公司 | Built-in dual-thermostat electric heating tube device |
-
2014
- 2014-09-18 CN CN201410476313.4A patent/CN104202854B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4439667A (en) * | 1980-07-11 | 1984-03-27 | Pace Incorporated | Desoldering device and improved heater assembly therefor |
| CN2563880Y (en) * | 2002-07-08 | 2003-07-30 | 河合电器(杭州)有限公司 | Electric heating tube with built-in heat fuse |
| CN101400194A (en) * | 2007-09-29 | 2009-04-01 | 江苏顺发电热材料有限公司 | Built-in double safety washing machine heating pipe and machining method thereof |
| CN202261845U (en) * | 2011-08-31 | 2012-05-30 | 青岛易特优电子有限公司 | Built-in dual-thermostat electric heating tube device |
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| CN104202854A (en) | 2014-12-10 |
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