CN106304431A - A kind of electric heating tube with graphite as heat-conducting medium - Google Patents
A kind of electric heating tube with graphite as heat-conducting medium Download PDFInfo
- Publication number
- CN106304431A CN106304431A CN201610808257.9A CN201610808257A CN106304431A CN 106304431 A CN106304431 A CN 106304431A CN 201610808257 A CN201610808257 A CN 201610808257A CN 106304431 A CN106304431 A CN 106304431A
- Authority
- CN
- China
- Prior art keywords
- electric heating
- heating tube
- heat
- graphite
- heating wire
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
- H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
Abstract
The invention discloses a kind of electric heating tube with graphite as heat-conducting medium, described electric heating tube includes Can (2), axially across the electrical heating wire (1) of described Can (2) and the graphite powder (10) that is filled between described Can (2) and described electrical heating wire (1), the particle diameter of described graphite powder (10) is 1 nanometer 500 microns, and the outer surface of described electrical heating wire (1) and the inner surface of described Can (2) are provided with inorganic thermal conductive material layer.The present invention uses graphite powder as transmitting medium, improves electric conversion rate, accelerates heat conduction velocity, reduces self thermal losses.
Description
Technical field
The present invention relates to electric heating tube technical field, be specifically related to a kind of electric heating tube with graphite as heat-conducting medium.
Background technology
Electric heating tube (also known as electrically heated rod) is the electric elements converting electrical energy into heat energy specially, is field of electric heating
Critical component, is widely used in household electrical appliances, automobile, weaving, food, machine-building, power plant, water boiling implement and other heating apparatus
Etc. numerous fields needing heating.Existing electric heating tube, is with metal tube as shell, central axial distributing auger electricity along pipe
Heat seal spun gold (nickel chromium triangle, ferrochrome), pipe internal pore fill have good insulation heat conductivility medium oxidizing magnesia or
Particulate composition containing magnesium oxide sand, mouth of pipe two ends silica gel or ceramic seal.
Magnesium oxide sand is the solid that fusing point is the highest, heat conduction and non-conductive, its effect be heating wire is sent heat conduction
To metal tube outer wall.Generally there is power consumption height, thermal conversion efficiency in the existing electric heating tube using magnesium oxide sand as heat-conducting medium
The defect that low and heat transfer efficiency is low.For using magnesium oxide sand to do traditional electric heating tube of implant, such as, when input power it is
1500 watt-hours, heating tube wall temperature is also merely able to reach about 290 degrees Celsius.Energy-saving and cost-reducing at present country and social desirability and
Focusing under the overall background of environmental conservation, the magnesium oxide sand as the heat-conducting medium of electric heating tube the most increasingly can not meet reality
Demand.
The Chinese patent literature of Publication No. CN103442465A discloses a kind of electric heating tube, including housing, in housing
Being provided with heater strip, heat-conducting insulation material is filled in described heater strip periphery, and wherein said heat-conducting insulation material is by magnesium oxide sand, filling
Particulate matter forms, and described filler particle is made up of silicone rubber, aluminium oxide, titanium dioxide and ceramic particle, and thermal conductivity is the highest can
Reach 1.98-3.1W/M DEG C.
The Chinese patent literature of Publication No. CN104344541A discloses a kind of electric heater for heating system, its
The electric heating tube of middle use is with metal tube as shell, along the interior central axial distributing auger lectrothermal alloy wire of pipe, the space in pipe
Middle filling magnesium oxide sand, mouth of pipe two ends silica gel or ceramic seal.The electric heating tube that this electric heater uses uses magnesium oxide sand
As heat-conducting medium.
The Chinese patent literature of Publication No. CN102740518A discloses a kind of defrosting and adds heat pipe, and body material is aluminum
Paper tinsel, is provided with heating wire in body, the material of heating wire is ferrochrome, at pipe internal pore padding and compacting magnesium oxide sand.This electricity
Heat-generating pipe have employed magnesium oxide sand equally as heat-conducting medium.
This area has the further thermal conversion efficiency improving electric heating tube and heat transfer efficiency and reduces electrical heating further
The tight demand of pipe power consumption so that electric heating tube has high thermal conversion efficiency and heat transfer efficiency, and can reduce further
The power consumption of electric heating tube, existing electric heating tube magnesium oxide is as heat-conduction medium, and conduction of heat is slow, and self thermal losses is big.
Summary of the invention
It is an object of the invention to provide a kind of electric heating tube with graphite as heat-conducting medium, the present invention uses graphite powder to make
For transmitting medium, improve electric conversion rate, accelerate heat conduction velocity, reduce self thermal losses.
For achieving the above object, the present invention provides a kind of electric heating tube with graphite as heat-conducting medium, described electric heating tube
Including Can, axially across the electrical heating wire of described Can and be filled in described Can and add with described electricity
Graphite powder between heated filament, the particle diameter of described graphite powder is 1 nanometer-500 microns, the outer surface of described electrical heating wire and described gold
The inner surface belonging to shell is provided with inorganic thermal conductive material layer.
Preferably, metallic aluminium granule, described metallic aluminium it are also filled with between described Can and described electrical heating wire
The particle diameter of grain is 100-300 nanometer.
Preferably, described inorganic thermal conductive material layer is enamel layer.
Preferably, the outside of described Can is provided with temperature tube.
Preferably, the outside of described Can is provided with radiating fin.
Preferably, described radiating fin is helically looped around the periphery of described Can, and the distance of adjacent heat radiation wing is
8-20 millimeter.
Preferably, the outer surface of Can and described radiating fin is coated with layers of copper.
Present invention have the advantage that
The present invention uses graphite as heat-conducting medium, and caloric value is big, and heating is fast.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of detailed description of the invention of electric heating tube of the present invention.
Detailed description of the invention
Detailed description below is used for illustrating the present invention, but is not limited to the scope of the present invention.
As it is shown in figure 1, the present invention provides a kind of electric heating tube with graphite as heat-conducting medium, described electric heating tube includes gold
Belong to shell 2, axially across the electrical heating wire 1 of described Can 2 and be filled in described Can 2 and described electrical heating
Graphite powder 10 between silk 1, the particle diameter of described graphite powder 10 is 1 nanometer-500 microns.Owing to graphite and aluminum are conductive
Material, and electrical heating wire has electric current pass through, electric heating tube can be made to leak electricity, therefore, in order to prevent electric leakage, described electrical heating wire 1
Outer surface and the inner surface of described Can 2 can be provided with inorganic thermal conductive material layer, inorganic thermal conductive material layer can be
Pottery, aluminium oxide, clay etc., in order to improve adhesive ability and the insulating properties of inorganic thermal conductive material layer further, described inorganic
Thermal conductive material layer can be enamel layer.The present invention uses graphite as heat-conducting medium, and caloric value is big, and heating is fast.
Owing to graphite at high temperature can be oxidized, generate gas, thus increase the pressure within electric heating tube, cause quick-fried
Fried, in order to reduce explosion potential, between described Can 2 and described electrical heating wire 1, metallic aluminium granule can also be filled with,
The oxidability of metallic aluminium is higher than graphite, and aoxidizes the aluminium oxide that material is the high capacity of heat transmission of generation, can not only prevent
Blast, and heat transfer efficiency can be increased, metallic aluminium granule can be 1:100-10000 with the mass ratio of described graphite, in order to
Increasing the surface area of metallic aluminium granule, thus increase the ability of adsorption of oxygen, the particle diameter of described metallic aluminium granule can be 100-
300 nanometers.
Measuring the temperature of electric heating tube for convenience, the outside of described Can 2 can be provided with temperature tube.
Dispelling the heat for convenience, the outside of described Can 2 can be provided with radiating fin, and described radiating fin spiral shell can revolve shape
Be looped around the periphery of described Can 2, the distance of adjacent heat radiation wing can be 8-20 millimeter, Can 2 and described dissipate
The outer surface of hot wing can be coated with layers of copper.
Although, the present invention is described in detail to have used general explanation and detailed description of the invention, but
On the basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.
Claims (7)
1. the electric heating tube with graphite as heat-conducting medium, it is characterised in that described electric heating tube include Can (2),
Axially across the electrical heating wire (1) of described Can (2) and be filled in described Can (2) and described electrical heating wire
(1) graphite powder (10) between, the particle diameter of described graphite powder (10) is 1 nanometer-500 microns, the appearance of described electrical heating wire (1)
The inner surface of face and described Can (2) is provided with inorganic thermal conductive material layer.
Electric heating tube the most according to claim 1, it is characterised in that described Can (2) and described electrical heating wire (1)
Between be also filled with metallic aluminium granule, the particle diameter of described metallic aluminium granule is 100-300 nanometer.
Electric heating tube the most according to claim 1, it is characterised in that described inorganic thermal conductive material layer is enamel layer.
Electric heating tube the most according to claim 1, it is characterised in that the outside of described Can (2) is provided with thermometric
Pipe.
Electric heating tube the most according to claim 1, it is characterised in that the outside of described Can (2) is provided with heat radiation
Wing.
Electric heating tube the most according to claim 5, it is characterised in that described radiating fin is helically looped around described metal
The periphery of shell (2), the distance of adjacent heat radiation wing is 8-20 millimeter.
Electric heating tube the most according to claim 6, it is characterised in that Can (2) and the outer surface of described radiating fin
It is coated with layers of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808257.9A CN106304431A (en) | 2016-09-07 | 2016-09-07 | A kind of electric heating tube with graphite as heat-conducting medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808257.9A CN106304431A (en) | 2016-09-07 | 2016-09-07 | A kind of electric heating tube with graphite as heat-conducting medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106304431A true CN106304431A (en) | 2017-01-04 |
Family
ID=57709736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610808257.9A Pending CN106304431A (en) | 2016-09-07 | 2016-09-07 | A kind of electric heating tube with graphite as heat-conducting medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106304431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114480795A (en) * | 2021-12-09 | 2022-05-13 | 宝勋精密螺丝(浙江)有限公司 | Spheroidizing annealing device for screw wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2747513A2 (en) * | 2012-12-20 | 2014-06-25 | Rotorcomp Verdichter GmbH | Heater assembly |
| CN203984703U (en) * | 2014-05-30 | 2014-12-03 | 天津市润德科技有限公司 | High heat conduction anti-oxidation metal heater |
-
2016
- 2016-09-07 CN CN201610808257.9A patent/CN106304431A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2747513A2 (en) * | 2012-12-20 | 2014-06-25 | Rotorcomp Verdichter GmbH | Heater assembly |
| CN203984703U (en) * | 2014-05-30 | 2014-12-03 | 天津市润德科技有限公司 | High heat conduction anti-oxidation metal heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114480795A (en) * | 2021-12-09 | 2022-05-13 | 宝勋精密螺丝(浙江)有限公司 | Spheroidizing annealing device for screw wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
|
| RJ01 | Rejection of invention patent application after publication |