CN104202854A - Electric heating device with double built-in overheating protection devices - Google Patents
Electric heating device with double built-in overheating protection devices Download PDFInfo
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- CN104202854A CN104202854A CN201410476313.4A CN201410476313A CN104202854A CN 104202854 A CN104202854 A CN 104202854A CN 201410476313 A CN201410476313 A CN 201410476313A CN 104202854 A CN104202854 A CN 104202854A
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- protector
- eduction rod
- electric heating
- flange
- zero line
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Abstract
The invention belongs to the technical field of electric heating devices and relates to an electric heating device with double built-in overheating protection devices. Two ends of an electric heating tube are provided with a live line protector and a null line protector which are same in structures; two ends of temperature fuses are fixedly connected in outer guiding bars and inner guiding bars in inserted and sleeved manners; the outer guiding bar of the live line protector is connected to and guides a first wire connecting terminal, the outer guiding bar of the null line protector is connected to and guides a second wire connecting terminal, the inner guiding bars of the live line protector and null line protector are fixedly connected to the ends of resistance wires inside the electric heating tube, and the clearances between resistance wires and the electric heating tube are filled with powder filling medium; two ends of the electric heating tube are fixedly connected through a flange, rubber pads are arranged at the connections of the flange and the electric heating tube, a bolt is riveted to the center of the flange, and a temperature sensor is welded to the flange besides the bolt. The electric heating device is simple in structure, reliable in principle, scientific in design, convenient to use, wide in usage range, low in manufacture cost and environment-friendly.
Description
Technical field:
The invention belongs to electric heating equipment technical field, relate to a kind of electric heater unit that is built-in with overheat protector, can when heater element surpasses specified temp, cut off heating power supply to avoid heater element to be burned, prevent security incident.
Background technology:
Electric heater unit, is a kind of high-quality long-life electric heating equipment of international popular, and the liquid medium and the gaseous medium that are mainly used in flow heat up, protect mild heat.Fluid explosion-proof electric heater commonly in the market, the operation principle of this electric heater is to consume electric energy to be converted to heat energy and need are added to thermal material to heat, 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 heat producing in electric heating element work, heated medium temperature is raise; 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 adding thermal material overtemperature and causes coking, rotten, carbonization, even causes heater element to burn out, thereby effectively extends electric heater useful life.In existing patented technology, also there are the multiple electric heater unit with overheat protector or electric heater, the disclosed a kind of long acting type anti-explosion electric heater of Chinese patent 2006200743518 for example, it fixes explosion-proof chamber in heating container upper end by sleeve pipe, and adopts flat seal to use degree of safety and life-span to increase electric heater; The disclosed a kind of anti-explosion electric heating tube of Chinese patent 00267306.1, its one end at electrothermal tube is electrically connected with protective tube by extraction pole, to realize directly fast, to prevent fires timely and effectively and explosion prevention function; The disclosed a kind of heating element of Chinese patent 200780046564.0, it is connected electrical heating resistor by electric connector with hot fuse, to shorten the passing time between thermal source and hot fuse, increase the reaction sensitivity of hot fuse; The electric heating tube of Chinese patent 02265343.0 disclosed a kind of built-in thermal cut-off, there is thermal cut-off at its two ends at electric heating tube by interior eduction rod and the riveted joint of outer eduction rod, to improve temperature-controlled precision and the reliability of overtemperature protection; The disclosed a kind of built-in pair of temperature controlled electric heat pipe of Chinese patent 201120324628.9, it is arranged on radiating tube port by upper eduction rod and lower eduction rod by temperature control safety element; In above-mentioned patented technology in disclosed all kinds of electric heaters 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 that is built-in with overtemperature protection system; by dissimilar overtemperature protection system being set at electric heating tube two ends; to realize respectively the overcurrent protection of electric heater unit to live wire end and zero line side, there is good practical value and economic benefit.
Summary of the invention:
The object of the invention is to overcome the shortcoming that prior art exists, seek the electric heater unit that design provides a kind of built-in pair of overheat protector, can effectively prevent electric heater unit dry combustion method and cause security incident.
To achieve these goals, the electric heater unit agent structure the present invention relates to comprises flange, bolt, temperature sensor, the first terminals, outer eduction rod, rubber blanket, protective sleeve, Thermal Cutoffs, interior eduction rod, resistance wire, filled media, electrothermal tube, the 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 live wire protector and the zero line protector of being equipped with respectively, 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 thereof 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 draws the first terminals, the other end of zero line protector China and foreign countries eduction rod connects draws the second terminals, the other end of live wire protector and interior eduction rod in zero line protector is all fixedly connected with the termination wound form of the spiral resistance wire of electrothermal tube inside, the closely knit powdery filled media that is filled with in the space of resistance wire in electrothermal tube, between the two ends of electrothermal tube, by flange, be fixedly connected with, the junction sealed type of flange and electrothermal tube is filled with rubber blanket, the fixing riveted joint of centre of flange has bolt, on the flange on bolt side, be fixedly welded with temperature sensor, realize and docking with ambient temperature measuring instrument, so that the temperature of electric heater unit is measured.
The temperature sensor the present invention relates to is selected thermistor temperature sensor; Protective sleeve is polybutylene terephthalate (PBT) (PBT) pipe or high polymer polypropylene (PP) pipe of hollow type tubular structure, to bring into play good insulation, resistance to compression, heat insulation, explosion-proof and anti-flaming function; Powdery filled media is selected all good crystal magnesium oxide (MgO) powder or flake asbestoss of heat conductivility and insulation property; Electrothermal tube is the stainless steel tube of nickel plating, is shaped as straight shape, U-shaped, L shaped, 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 live wire end and the zero line side of external circuit respectively.
The present invention compared with prior art, on the one hand, two ends at electric heating tube arrange respectively live wire protector and zero line protector according to docking demand, wherein in live wire protector and zero line protector, select the Thermal Cutoffs of different size model, to realize temperature control effect more accurately; On the other hand, on the adpting flange between electric heating tube two ends, be fixedly welded with temperature sensor, to dock with ambient temperature measuring instrument, realize the measurement of electric heating temperature; It is simple in structure, and principle is reliable, design science, and low cost of manufacture, heat-transfer rate is fast, controls precisely, safe, environmental friendliness.
Accompanying drawing explanation:
Fig. 1 is agent structure principle schematic of the present invention.
Embodiment:
Below in conjunction with accompanying drawing and by embodiment, the present invention is made to further description.
Embodiment:
The electric heater unit agent structure that the present embodiment relates to comprises flange 1, bolt 2, temperature sensor 3, the 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, the 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 live wire protector 14 and the zero line protector 15 of being equipped with respectively, 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 thereof 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 rods 5 connects draws the first terminals 4, the other end of zero line protector 15 China and foreign countries' eduction rods 5 connects draws the second terminals 13, the other end of live wire protector 14 and interior eduction rod 9 in zero line protector 15 is all fixedly connected with the termination wound form of the spiral resistance wire 10 of electrothermal tube 12 inside, the closely knit powdery filled media 11 that is filled with in the space of resistance wire 10 in electrothermal tube 12, between the two ends of electrothermal tube 12, by flange 1, be fixedly connected with, flange 1 is filled with rubber blanket 6 with the junction sealed type of electrothermal tube 12, the fixing riveted joint of centre of flange 1 has bolt 2, on the flange 1 on bolt 2 sides, be fixedly welded with temperature sensor 3, realize and docking with ambient temperature measuring instrument, so that the temperature of electric heater unit is measured.
The temperature sensor 3 that the present embodiment relates to is selected thermistor temperature sensor; Protective sleeve 7 is polybutylene terephthalate (PBT) (PBT) pipe or high polymer polypropylene (PP) pipe of hollow type tubular structure, to bring into play good insulation, resistance to compression, heat insulation, explosion-proof and anti-flaming function; Powdery filled media 11 is selected all good crystal magnesium oxide (MgO) powder or flake asbestoss of heat conductivility and insulation property; Electrothermal tube 12 is the stainless steel tube of nickel plating, is shaped as straight shape, U-shaped, L shaped, W shape, fin shape or abnormity; Thermal Cutoffs 8 models in live wire protector 14 are 160-170 degree, and Thermal Cutoffs 8 models in zero line protector 15 are 150-160 degree; During use, live wire protector 14 and zero line protector 15 dock with live wire end and the zero line side of external circuit respectively.
Claims (3)
1. the electric heater unit of a built-in pair of overheat protector, it is characterized in that agent structure comprises flange, bolt, temperature sensor, the first terminals, outer eduction rod, rubber blanket, protective sleeve, Thermal Cutoffs, interior eduction rod, resistance wire, filled media, electrothermal tube, the 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 live wire protector and the zero line protector of being equipped with respectively, 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 thereof 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 draws the first terminals, the other end of zero line protector China and foreign countries eduction rod connects draws the second terminals, the other end of live wire protector and interior eduction rod in zero line protector is all fixedly connected with the termination wound form of the spiral resistance wire of electrothermal tube inside, the closely knit powdery filled media that is filled with in the space of resistance wire in electrothermal tube, between the two ends of electrothermal tube, by flange, be fixedly connected with, the junction sealed type of flange and electrothermal tube is filled with rubber blanket, the fixing riveted joint of centre of flange has bolt, on the flange on bolt side, be fixedly welded with temperature sensor, realize and docking with ambient temperature measuring instrument, so that the temperature of electric heater unit is measured.
2. the electric heater unit of built-in pair of overheat protector according to claim 1, is characterized in that temperature sensor selects thermistor temperature sensor; Protective sleeve is polybutylene terephthalate (PBT) pipe or the high polymer PA tube of hollow type tubular structure, to bring into play good insulation, resistance to compression, heat insulation, explosion-proof and anti-flaming function; Powdery filled media is selected heat conduction and good crystal magnesium oxide powder or the flake asbestos of electrical insulation capability.
3. the electric heater unit of built-in pair of overheat protector according to claim 1, is characterized in that electrothermal tube is the stainless steel tube of nickel plating, is shaped as straight shape, U-shaped, L shaped, 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 live wire end and the zero line side of external circuit respectively.
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 |
Publications (2)
| Publication Number | Publication Date |
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| CN104202854A true CN104202854A (en) | 2014-12-10 |
| CN104202854B CN104202854B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105792391A (en) * | 2016-03-04 | 2016-07-20 | 青岛易特优电子有限公司 | Special-tube-shaped electric heating apparatus and preparation method therefore |
| CN106658766A (en) * | 2016-10-13 | 2017-05-10 | 安庆泰邦船舶科技有限公司 | Electric heater apparatus for boats |
| CN108353466A (en) * | 2015-07-30 | 2018-07-31 | I.R.C.A.（共同）股份公司工业铠装及类似电阻 | Armouring resistor and its manufacturing process |
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| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108353466A (en) * | 2015-07-30 | 2018-07-31 | I.R.C.A.（共同）股份公司工业铠装及类似电阻 | Armouring resistor and its manufacturing process |
| US10743374B2 (en) | 2015-07-30 | 2020-08-11 | I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini | Armored resistor and manufacturing process thereof |
| CN105792391A (en) * | 2016-03-04 | 2016-07-20 | 青岛易特优电子有限公司 | Special-tube-shaped electric heating apparatus and preparation method therefore |
| 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 |
| CN106658766A (en) * | 2016-10-13 | 2017-05-10 | 安庆泰邦船舶科技有限公司 | Electric heater apparatus for boats |
| 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 |
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| CN104202854B (en) | 2016-02-24 |
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