CN103376807A - Electromagnetic heating temperature-control system and air cooling system thereof - Google Patents
Electromagnetic heating temperature-control system and air cooling system thereof Download PDFInfo
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- CN103376807A CN103376807A CN2012101094492A CN201210109449A CN103376807A CN 103376807 A CN103376807 A CN 103376807A CN 2012101094492 A CN2012101094492 A CN 2012101094492A CN 201210109449 A CN201210109449 A CN 201210109449A CN 103376807 A CN103376807 A CN 103376807A
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Abstract
The invention provides an air cooling system of an electromagnetic heating temperature-control system. The air cooling system includes a heat radiation portion comprising heat conduction strips, a radiating fin and an air channel, and a wind power source. The heat conduction strips are at least two with length directions perpendicular or nearly perpendicular to a winding direction of an electromagnetic coil of the electromagnetic heating temperature-control system, and each are provided with a striped structure in close contact with an outer wall of a temperature-control object of the electromagnetic heating temperature-control system. The air channel is formed between the radiating fin and the outer wall of the temperature-control object and/ or other parts of the heat radiation portion. An outlet of the wind power source is connected to an inlet of the air channel. The air cooling system and the electromagnetic heating temperature-control system using the air cooling system minimize leakage flux, improve heating efficiency and heat radiating efficiency, prevent vortex in air-cooled structural components, and achieve the purposes of stable temperature control and efficient energy-saving.
Description
Technical field
The present invention relates to a kind of air cooling system of Electromagnetic Heating temperature-controlling system and adopt the Electromagnetic Heating temperature-controlling system of this air cooling system, particularly a kind of air cooling system of the Electromagnetic Heating temperature-controlling system for plastic processing machinery.
Background technology
The Electromagnetic Heating temperature-controlling system is the compound system with electromagnetic heating system, temperature-controlling system and cooling system.
Wherein, electromagnetic heating system is that power frequency supply is reverse into 15～30kHz alternating source, be loaded into and be heated the outside solenoid that twines of object, produce alternating electromagnetic field by resonant circuit, under the effect of alternating electromagnetic field, cause hysteresis and vortex phenomenon, the two acting in conjunction produces thermal effect in controlled target temperature (such as barrel), thereby to its heating.
Temperature-controlling system is that temperature control system is in order to satisfy manufacturing technique requirent, the production object temperature to be controlled within the specific limits.In order to realize temperature control, need temperature control instrument or PLC, electromagnetic heating system and cooling system.Electromagnetic Heating is applied to produce the intensification preheating of incipient stage and the insulation in the production run; The impact that cooling system rises for reducing the caused temperature of the frictional heat that transforms owing to the motor shaft work.
At plastic product processing and pipe temperature control field, Electromagnetic Heating is as a kind of new heater means, electric energy can be converted into effective heat energy to greatest extent, with the type of heating of the electric heating of traditional resistor mode conversion relatively have heating fast, thermal loss is little, effective utilization rate of thermal energy is high, it is little to lag behind, be beneficial to the characteristics of accurate temperature control, can reach energy-efficient, improve the quality of products, boost productivity, improve the purpose of working environment.
Because the phenomenon that has in process of production the material friction or reflux and cause temperature to raise, cooling system is playing an important role aspect the normal production of assurance and the production safety, this just requires cooling system necessary reliable, with Electromagnetic Heating and the situation of depositing under to meet the requirement of electromagnetic heating system, can not cause owing to the existence of alternating electromagnetic field in cooling system structure, producing eddy current or magnetic hysteresis, thereby affect stability and the efficient of electromagnetic heating system.
Existing Electromagnetic Heating temperature-controlling system is provided with from inside to outside: the air channel outer wall that controlled target temperature (barrel), hollow air channel (and stilt), organic material are made, heat insulation layer, be used for the solenoid of heating, its shortcoming is:
1) prior art adopts organic material as the air channel outer wall, and under heating state, organic material often can soften even decompose, so that the air channel easily subsides, causes cooling not smooth, easily the too high accident of occurrence temperature;
2) be inserted between barrel and the heat insulation layer owing to air channel of the prior art, and solenoid is rolled in the heat insulation layer outside, because the existence in air channel causes leakage flux large, the magnetic field utilization factor is low, and the efficiency of heating surface is poor;
3) because heat insulation layer is wrapped in the outside, air channel, so that the efficiency of heating surface is low, insulation effect is poor, radiating effect is also poor.
Summary of the invention
The air cooling system of a kind of Electromagnetic Heating temperature-controlling system of the present invention and adopt the Electromagnetic Heating temperature-controlling system of this air cooling system, make leakage flux be reduced to minimum, the efficiency of heating surface and radiating efficiency have been improved, avoid the generation of eddy current in the air-cooled structure parts, reached stable control temperature and energy-efficient purpose.
A kind of air cooling system of Electromagnetic Heating temperature-controlling system comprises radiating part and wind-power source, and described radiating part comprises heat conduction bar, heat radiator and air channel; Described heat conduction bar is at least two its length directions and the vertical or approximately perpendicular list structure of the solenoid winding direction of Electromagnetic Heating temperature-controlling system, the outer wall close contact of the controlled target temperature of the side of described heat conduction bar and Electromagnetic Heating temperature-controlling system; Described heat radiator is connected with described heat conduction bar, described heat radiator has the fin structure of sticking up in the part that does not link to each other with the heat conduction bar, and the space that forms between the outer wall that sticks up fin structure and described controlled target temperature of described heat radiator and/or the other parts of radiating part consists of described air channel; The air outlet in described wind-power source is connected with the air inlet in described air channel.
Described heat radiator and/or heat conduction bar can be that the nonmagnetic substance good by plasticity, that temperature conductivity is high is made, and/or the xsect of described heat radiator is linear, bent, circular arc or waveform, or the combination of aforementioned at least two kinds of shapes, and/or described heat radiator is sandwich construction.
Described heat radiator and heat conduction bar can be integrative-structures.
The thickness of described heat conduction bar can be for 2 to 4mm; And/or the width of described heat conduction bar can be for 3 to 5mm, and/or the spacing between a plurality of heat conduction bar can be for 1 to 4mm.
Described heat conduction bar can be by removing the lattice structure that remaining part consists of behind a plurality of parallel grooves on the sheet material;
Or described heat conduction bar can be by removing the lattice structure that remaining part consists of behind a plurality of parallel grooves on the sheet material; A plurality of heat conduction bars do not connect each other at its free end separately; Or a plurality of heat conduction bars are connected to each other by join domain at its free end separately, the width of described join domain be the distance at this free-ended edge of near the free end of described sheet material groove ends and described sheet material greater than 0 less than or equal to 5mm.
Can have connecting portion between described heat conduction bar and the described heat radiator, rotation body structure centered by the described controlled target temperature, described heat conduction bar is circumferentially spaced apart along the external wall of described central rotation, the described fin structure that sticks up is by outwards stretch one section vertical section and form along the extension of described outer wall longitudinal extension along the radial direction of the arbitrary xsect of described central rotation body, vertical section described extension of sticking up fin structure with different radical lengths arranges in opposite directions, in opposite directions vertical section is spaced from each other a distance, forms described air channel;
And/or can have connecting portion between described heat conduction bar and the described heat radiator, and described heat radiator is and identical, the parallel or approximately parallel list structure of described heat conduction bar length direction, the width of described connecting portion is 10 to 50mm; And/or the width of the described heat radiator of list structure is 3 to 5mm, and/or the spacing of the described heat radiator of a plurality of list structures is 1 to 4mm.
Described heat radiator can be arranged to bending structure and stick up fin structure form by the part of described heat conduction bar;
And/or the described thickness that sticks up fin structure can be less than the thickness of described heat conduction bar;
And/or the described fin structure that sticks up can be schistose texture or circular arc body structure with respect to heat conduction bar surface deflections certain angle.
A kind of Electromagnetic Heating temperature-controlling system comprises the controlled target temperature that sets gradually from inside to outside, above-mentioned air cooling system, heat insulation layer, solenoid, insulation heat proof material shell; The two sides of the heat conduction bar of described air cooling system respectively with the outer wall of described controlled target temperature and the inner layer wall close contact of heat insulation layer; Consist of the air channel between the inner layer wall of the heat radiator of described air cooling system and the outer wall of described controlled target temperature and heat insulation layer; Vertical or the near normal of length direction of described solenoid winding direction and described heat conduction bar.
Described heat insulation layer can be made by insulating heat insulating material; And/or can scribble heat-conducting glue between described heat conduction bar and the described controlled target temperature outer wall.
The air channel of described air cooling system can comprise the layer structure that fin structure consists of of sticking up by at least two heat radiator, and/or sticking up between fin structure periphery and the described insulation heat proof material shell of described heat radiator form the air channel, and/or the space between the outer wall that sticks up fin structure and described controlled target temperature of described heat radiator forms the air channel.
Technique effect of the present invention:
The outer wall close contact of the heat conduction bar of the air cooling system of a kind of Electromagnetic Heating temperature-controlling system of the present invention and the controlled target temperature of Electromagnetic Heating temperature-controlling system, thus make leakage flux be reduced to minimum, improved the efficiency of heating surface and radiating efficiency; Avoid the generation of eddy current in the air-cooled structure parts, heat can be transmitted to the perk part fast simultaneously.Do not form loop at circumferencial direction when radiating part is installed, avoided vortex heat under the alternating electromagnetism field action at the barrel circumferencial direction.Adopt the strip conductive structure, not only be beneficial to and be adjacent to barrel, can also avoid the thermal effect in heat radiator inside local eddy currents under electromagnetic field effect.Compare with the cooling system in coil section's making air channel, can make solenoid be close to barrel, leakage flux can be less, and the efficiency of heating surface is higher.And by the sticking up the air channel that fin structure forms and can prevent from caving in of heat radiator, be convenient to effectively, ventilate swimmingly, can stablize control temperature, energy-efficient.
The further scheme of the present invention uses plasticity nonmagnetic substance good, that temperature conductivity is high to prepare described heat radiator and/or heat conduction bar, is beneficial to better heat conduction and heat transfer, can also avoid hysteresis heat effect in the Electromagnetic Heating.
The heat radiator of the further scheme of the present invention and heat conduction bar are integrative-structures, are convenient to processing, have prevented that simultaneously heat is not smooth in the heat transfer at two kinds of structure interface face places.
The thickness of the preferred heat conduction bar of the further scheme of the present invention both had been conducive to heat transfer, heat conduction, was conducive to again processing and saved material.
The heat conduction bar that the preferred lattice structure that is formed by sheet material of the further scheme of the present invention consists of is convenient to processing and installation, and owing to interconnects good heat conduction effect between each heat conduction bar.The preferred Edge Distance of the further scheme of the present invention is convenient to processing and fixing.
The connecting portion of the further scheme of the present invention is convenient to processing and fixing.
The described heat radiator of the further scheme of the present invention is arranged to bending structure and sticks up fin structure form by the part of described heat conduction bar, is convenient to processing, has prevented that simultaneously heat is not smooth in the heat transfer at two kinds of structure interface face places.The thickness that sticks up fin structure of the further scheme of the present invention increases width less than the thickness of described heat conduction bar, has increased cooling surface area, is beneficial to heat radiation.The further scheme of the present invention is stuck up the surface area that fin structure is convenient to increase heat radiator with respect to schistose texture or the circular arc body structure of heat conduction bar surface deflections certain angle, is beneficial to ventilation and heat.
A kind of Electromagnetic Heating temperature-controlling system of the present invention, owing to adopted above-mentioned air cooling system, the two sides of its heat conduction bar respectively with the outer wall of the controlled target temperature of Electromagnetic Heating temperature-controlling system and the inner layer wall close contact of heat insulation layer, therefore the outer wall of controlled target temperature and the gap between the solenoid have been reduced, thereby make leakage flux be reduced to minimum, the efficiency of heating surface and radiating efficiency have been improved, avoided the generation of eddy current in the air-cooled structure parts, and sticking up the air channel that fin structure forms and to prevent from caving in by heat radiator, be convenient to effectively, ventilate swimmingly, can stablize the control temperature, energy-efficient.
The further scheme of the present invention uses insulating heat insulating material to prepare heat insulation layer, prevented heat by heat insulation layer to external radiation, saved the energy.Scribble heat-conducting glue between the described heat conduction bar of the further scheme of the present invention and the described controlled target temperature outer wall, be conducive to improve heat transfer efficiency.
Description of drawings
Fig. 1 is the control block diagram of Electromagnetic Heating temperature-controlling system of the present invention.
Fig. 2 a is the structural representation of an embodiment of Electromagnetic Heating temperature-controlling system of the present invention.
Fig. 2 b is the cross sectional representation of Fig. 2 a.
Fig. 3 a is the structural representation of an embodiment of air cooling system of the present invention.
Fig. 3 b is the structural representation of the xsect of the heat conduction bar of Fig. 3 a and heat radiator.
Fig. 3 c is the structural representation in the air channel of Fig. 3 a.
Fig. 4 a is the structural representation of an embodiment of air cooling system of the present invention
Fig. 4 b is the structural representation of the xsect of the heat conduction bar of Fig. 4 a and heat radiator.
Fig. 4 c is the structural representation in the air channel of Fig. 4 a.
Fig. 5 a is the structural representation of an embodiment of air cooling system of the present invention
Fig. 5 b is the structural representation of the xsect of the heat conduction bar of Fig. 5 a and heat radiator.
Fig. 5 c is the structural representation in the air channel of Fig. 5 a.
Reference numeral is as follows:
The 1-insulating material housing, 2-solenoid, 3-heat insulation layer, 4-barrel, 5-heat radiator, the 6-air channel, 7-heat conduction bar, 8-temperature sensor extension line, 11-air intake vent, 12-air outlet, the 51-bending structure, 52-sticks up fin structure, the width of a-connecting portion, the thickness of δ-heat conduction bar.
Embodiment
The present invention is directed to the characteristics of electromagnetic heating system, utilize structure and the preferred high thermal conductivity materials in air channel, method by heat interchange, derivation, realization is effectively diffused the plastic processing machinery heat of friction that adopts the Electromagnetic Heating mode, simultaneously, make leakage flux be reduced to minimum, avoided the generation of eddy current in the air-cooled structure parts, reach stable control temperature and energy-efficient purpose.The present invention is verified in actual use taking into full account aspect material selection, structural design and the construction and installation, satisfies the temperature control requirement under the electromagnetic heating system fully.
Below in conjunction with the accompanying drawing technical scheme that the present invention may be better understood and beneficial effect.
The Electromagnetic Heating temperature-controlling system is the compound system with electromagnetic heating system, temperature-controlling system and cooling system.The structured flowchart of typical electromagnetic heating system as shown in Figure 1.Wherein controlled target temperature A is generally barrel (for example plastic processing machinery field need to heat part), normally central rotation body structure (such as cylinder, Rotary-table, cone etc.).The temperature of barrel by temperature sensor B such as thermoelectricity occasionally thermal resistance temperature sensor measure; Temperature signal is converted to electric signal, imports temperature controller C into, and temperature controller C can be that plastic processing machinery carries the temperature control subsystem, also can be PLC system or the dish dress temperature controller that adds; Temperature signal carries out computing through PID or other algorithms of temperature controller C, produces control signal, exports to Electromagnetic Heating power supply D, the power stage of control power supply, thus controlled target temperature A is heated.If measurement excess Temperature, and be higher than the setting alarming value, then temperature controller C can drive wind-power source (such as usually using blower fan E) and carries out radiating and cooling.So just realized the temperature control to controlled target temperature A.
Of the present invention focusing on by air cooling system of the present invention is so that wind-power source (the blower fan E among Fig. 1) carries out more effective, stably heat radiation to controlled target temperature A.
Fig. 2 a and Fig. 2 b have shown the block diagram of Electromagnetic Heating temperature-controlling system of a subregion of Electromagnetic Heating barrel (a kind of concrete form of controlled target temperature A).Each subregion technological temperature of barrel 4 requires different, but the structure of each subregion is identical.The screw acting current downflow of material in barrel 4 heated by solenoid 2 in the flow process.In order to reduce the outer loose of heat, between solenoid 2 and barrel 4, swathe the heat insulation layer 3 that insulating heat insulating material consists of.Fig. 3 a to 3c is the structural representation of an embodiment of its air cooling system, has represented the structure of Electromagnetic Heating temperature-controlling system with the radiating part of heat derivation.The air cooling system of a kind of Electromagnetic Heating temperature-controlling system of the present invention comprises radiating part and wind-power source (such as blower fan).Radiating part is close to the outer wall of barrel 4 and is installed.As an embodiment, radiating part can be distributed in barrel 4 subregion temperature sensor B both sides, and every side can have 1 or two or multi-disc radiating part.Described radiating part comprises heat conduction bar 7 (being used for to heat radiator 5 conduction heats), heat radiator 5 (being used for heat is conducted the air-flow that passes through to air channel 6) and air channel 6 (air feed stream passes through).The xsect of described heat radiator 5 can be linear, bent, circular arc or waveform, or the combination of aforementioned at least two kinds of shapes, and described heat radiator 5 also can be sandwich construction or comb shaped structure.Described heat conduction bar 7 is at least two its length directions and the vertical or approximately perpendicular list structure of solenoid 2 winding directions of Electromagnetic Heating temperature-controlling system, the outer wall close contact of the controlled target temperature A (such as barrel) of described heat conduction bar and Electromagnetic Heating temperature-controlling system; Can be connected with each other between a plurality of described heat conduction bars 7 or do not link to each other; Described heat conduction bar 7 can be parallel to each other or approximate parallel, shown in Fig. 3 a, can certainly be not parallel, and shown in Fig. 4 a, Fig. 5 a, can prevent that electromagnetic eddy from producing in heat conduction bar 7.Described heat radiator 5 is connected with described heat conduction bar 7, also can have in this junction bending structure 51, described bending structure 51 can be that all heat conduction bars 7 same end along its length is connected (such as the situation of Fig. 3 a to 3c) with heat radiator 5, also can be that certain heat conduction bar 7 is connected (not shown) at the side of its Width with heat radiator 5.Heat radiator 5 on the radiating part and heat conduction bar 7 can be one, and be perhaps a plurality of, and the quantity of heat radiator 5 and heat conduction bar 7, arrangement mode, position, size etc. all can be not rely on mutually ground, change, and can certainly be identical.Described heat radiator 5 has the fin structure of sticking up 52 (shown in Fig. 3 c) in the part that does not link to each other with heat conduction bar 7.The described fin structure 52 that sticks up refers to make heat radiator 5 and heat conduction bar 7 not on the curved surface of same plane or same radius-of-curvature owing to the bending structure 51 of heat radiator 5, thereby so that the free end of heat radiator 5 leaves the plane of heat conduction bar 7 or the formed space structure of curved surface of same radius-of-curvature.The form of described heat radiator has multiple, be connected with single heat radiator such as the single heat conduction bar, or a plurality of parallel heat conduction bars are connected with at least one heat radiator, or the two ends of same heat conduction bar all connect same form or multi-form heat radiator, and (heat radiator of so-called same form refers to it is strip or sheet heat radiator equally; So-called multi-form heat radiator refers to that the heat radiator at heat conduction bar two ends is respectively strip and sheet) etc.The space that forms between the outer wall that sticks up fin structure 52 and described controlled target temperature A of described heat radiator 5 and/or the other parts of radiating part consists of described air channel 6.The concrete form in air channel 6 has multiple, as embodiment, the air channel can be that the space between the outer wall that sticks up fin structure 52 and described controlled target temperature A of described heat radiator forms the air channel, also can be described heat radiator stick up fin structure 52 and other heat radiator stick up fin structure (such as barrel axially on, the heat radiator that same heat conduction bar connects at the two ends of its length direction stick up fin structure respectively and adjacent sticking up of two heat radiator forms the air channel between the fin structure, or the heat radiator that sticks up fin structure and other heat conduction bar of the heat radiator that connects of heat conduction bar stick up formation air channel between the fin structure etc.) between along the barrel sidewall the formed air channel, space of formation is set in opposite directions vertically, also can be described heat radiator stick up the not air channel that consists of, the space between the end of perk of fin structure 52 and heat conduction bar 7, also can be that sticking up between fin structure periphery and the described insulation heat proof material shell of described heat radiator forms the air channel.If same heat conduction bar 7 connects a plurality of heat radiator 5 of vertical section with different barrel radical lengths, be that these heat radiator 5 are comb shape or sandwich construction, can be that a plurality of heat radiator have a bending structure 51 so, and the part that each heat radiator 5 does not link to each other with bending structure 51 is one and sticks up fin structure 52, a plurality of heat radiator that therefore are connected with same heat conduction bar 7 or bending structure 51 stick up between the fin structure 52 or these stick up the free end of fin structure 52 and other heat conduction bar 7 or other heat sink strip sticks up between the fin structure 52 (single or multiple) and the outside wall surface of barrel or insulate and also can both form the air channel between the heat proof material shell.Certainly can also be other form, (have in the situation of differing heights H1 and H2 as sticking up fin structure among Fig. 3 b such as the height that sticks up fin structure 52 adjacent or non-conterminous a plurality of heat radiator 5 is different, a plurality of heat radiator can consist of sandwich construction), as long as can make the therein space of circulate of air, no matter whether closed, all are the implications in the air channel 6 among the present invention.Air channel 6 preferably with the perpendicular direction of heat conduction bar 7, its direction also can be any angle with heat conduction bar 7 directions certainly.The air outlet in described wind-power source (such as blower fan E) is connected with the air inlet in described air channel 6, air-flow is passed from described air channel 6, thereby take away heat.
Described heat radiator 5 and/or heat conduction bar 7 preferably all can be by plasticity is good, temperature conductivity is high, nonmagnetic material, make such as aluminium, copper etc.Usually use aluminium sheet or copper coin, so that processing is simple.Also can be exposed in the air sticking up fin structure, adopt natural heat dissipation.
For the ease of processing, described heat radiator and heat conduction bar preferably, can be integrative-structures, are arranged to bending structure and stick up fin structure form by the part of described heat conduction bar such as described heat radiator; Can certainly be combined by two parts at least, connect by welding or riveting method between each ingredient.
Described heat conduction bar 7 can be by removing the lattice structure that remaining part consists of behind a plurality of parallel grooves on the sheet material, shown in Fig. 3 a, Fig. 4 a, Fig. 5 a, is convenient to processing and installs, and owing to interconnect good heat conduction effect between each heat conduction bar 7.In this case, if a plurality of heat conduction bars 7 are connected to each other by join domain at its free end, then the width b of described join domain is that the distance b at the free-ended edge of near the free end of described heat conduction bar 7 groove ends and described sheet material (sees that Fig. 3 is 0 to 5mm a), in this numerical range, the width of join domain is that 0 situation represents a plurality of heat conduction bars 7 and do not connect at its free end.
The thickness δ of described heat conduction bar 7 is preferably 2 to 4mm shown in Fig. 3 b, 4b, 5b, both be conducive to heat transfer, heat conduction, is conducive to again processing and saves material.And the width of heat conduction bar 7 is preferably 3 to 5mm, and the spacing between a plurality of heat conduction bars 7 is preferably 1 to 4mm, and the width of described heat conduction bar 7 can be distinguished identical or not identical with spacing.
Described heat conduction bar 7 can have connecting portion in the junction with described heat radiator 5, and the width a of described connecting portion is shown in Fig. 3 a, 4a, 5a.In this case, described connecting portion can be rectangle shown in Fig. 3 a, also can be trapezoidal shown in Fig. 4 a, Fig. 5 a.The described fin structure 52 that sticks up outwards stretches one section vertical section and form along the extension of the outer wall longitudinal extension of the controlled target temperature of described central rotation body by the radial direction along arbitrary xsect of the controlled target temperature of described central rotation body, vertical section described extension of sticking up fin structure 52 with different radical lengths arranges in opposite directions, in opposite directions vertical section is spaced from each other a distance, and forms described air channel 6.Described heat radiator 5 can also be and identical, the parallel or approximately parallel list structure of described heat conduction bar 7 length directions.This moment, the width a of described connecting portion was preferably 10 to 50mm.The width a of described connecting portion refer to heat conduction bar 7 an end that is connected with heat radiator 5 and heat radiator 5 with a end that heat conduction bar 7 is connected between distance, shown in Fig. 3 a, 3b, 4a, 4b, 5a, 5b, heat conduction bar 7 is connected with described heat radiator 5 by described connecting portion along its length direction, and then the width a of connecting portion refers to that heat conduction bar 7 is towards the end of heat radiator 5 directions and the distance between the described heat radiator 5.
The described thickness that sticks up fin structure 52 preferably can increase width less than the thickness δ of described heat conduction bar 7, has increased cooling surface area, is beneficial to heat radiation.
The described fin structure 52 that sticks up can be schistose texture or circular arc body structure with respect to heat conduction bar 7 surface deflections certain angles, is convenient to increase the surface area of heat radiator, is beneficial to ventilation and heat.Can understand so the described fin structure distortion certain angle that sticks up: if take solenoid twine axially as the z axle of cylindrical coordinate, take solenoid twine circumferentially as the polar angle θ direction of the cross section polar coordinate system of cylindrical coordinate, then this cross section polar coordinate system central vertical is utmost point footpath r direction in the axial radiation direction of z, under this cylindrical coordinate, if the controlled target temperature of Electromagnetic Heating temperature-controlling system is barrel 4, because barrel 4 is right cylinder normally, and heat conduction bar 7 is close to the barrel outer wall, therefore heat conduction bar 7 normal to a surface directions are that the r durection component of r direction of principal axis and heat conduction bar 7 surperficial every bits is identical, (describedly parallelly both can comprise the parallel of plane as long as stick up so the surface that the surface direction of fin structure 52 is not parallel to heat conduction bar 7, also can comprise the parallel of curved surface), then can be called and stick up fin structure 52 with respect to heat conduction bar 7 surface deflections certain angles.A kind of situation is to stick up fin structure 52 along the axial each point r of z value is not identical but r values different θ directions on same z direction of principal axis are identical, and claiming so to stick up fin structure 52 is to tilt and the distortion certain angle along the z direction of principal axis; Another kind of situation is that to stick up fin structure 52 all identical but r values different θ directions on same z direction of principal axis are not identical along the axial each point r of z value, claims so to stick up fin structure 52 and is along the inclination of θ direction of principal axis and twist certain angle.These two kinds of inclinations all belong to the surface deflections certain angle with respect to heat conduction bar 7, because the latter is less to stopping of ventilating air in the air channel 6, so the latter's result of ventilating heat dissipation is better; Certainly it is all not identical along the r value of the each point of different θ directions on the axial each point r of z value and the same z direction of principal axis to stick up fin structure 52, belongs to above-mentioned yet and sticks up fin structure 52 with respect to the surface deflections certain angle of heat conduction bar 7.
The present invention also provides a kind of Electromagnetic Heating temperature-controlling system, comprises the controlled target temperature (such as barrel 4) that sets gradually from inside to outside, above-mentioned air cooling system, heat insulation layer 3, solenoid 2; The two sides of the heat conduction bar 7 of described air cooling system respectively with the outer wall of described controlled target temperature (such as barrel 4) and the inner layer wall close contact of heat insulation layer 3; Consist of air channel 6 between the inner layer wall of the heat radiator 5 of described air cooling system and the outer wall of described controlled target temperature and heat insulation layer 3; Vertical or the near normal of length direction of described solenoid 2 winding directions and described heat conduction bar 7.
As an embodiment, shown in Fig. 3 a to 3c, the fin structure 52 that sticks up of the radiating part of temperature sensor B both sides is positioned among the outer wall of barrel 4 and the air channel 6 that insulation heat proof material shell 1 forms, when the wind that blows as blower fan E is blown into and blows out from air outlet 12 from air intake vent 11, under the barrier effect that sticks up fin structure 52 of heat radiator 5, form countless eddy current in the air channel 6, fully take the heat that is spread out of by barrel 4 out of.Described heat insulation layer 3 can be made by insulating heat insulating material.Air channel 6 is formed by the annulus that the outer wall of insulating material housing 1 and barrel 4 forms, and filled thermal insulation materials is preferably adopted in the both sides of annulus.The fin structure 52 that sticks up of heat radiator 5 is distributed among the air channel 6.
The Main Function of insulation material is insulation, and also having an effect is the filling material that can be used as the both sides, air channel, avoids side leakage wind; Also can be used as the filling material between insulating material housing 1 and the solenoid 2, what be used for levelling heat radiator 5 sticks up fin structure 52, so that outward appearance is more attractive in appearance.
Installation site according to blower fan E is driven the air port into, leaves the air port on the opposite of air inlet, then blower fan is connected to air inlet.The opening of air inlet 11 and air outlet 12 is not limited to upper and lower opening, about can being or other direction openings, determine aperture position depending on site specific, but in order to guarantee the even of barrel 4 heat dissipation capacities, angle between the position of air inlet 11 and air outlet 12 preferably keeps 180 degree directions, certainly, slightly error is also little on the heat radiation impact.
The heat of friction that barrel 4 produces conducts to heat conduction bar 7 by barrel 4, conducts to heat radiator 5 again, takes heat out of by forced draft (such as wind-power sources such as blower fans) again, reaches the purpose of equilibrium temperature.
As a kind of embodiment, two or four parallel radiating parts can be installed as a subregion along barrel 4, if two radiating parts, two radiating parts circumferentially are distributed in the both sides of temperature sensor (being installed in the through hole of barrel sidewall) along barrel when mounted; If four radiating parts, two radiating parts circumferentially are distributed in each two of temperature sensor both sides along barrel when mounted, and every side barrel is along each a slice radiating part of barrel axial distribution.The multi-disc radiating part can certainly be installed in a similar manner in barrel 4 outsides more or a slice radiating part only is installed, as a subregion.
The present invention is applicable to cylindrical shape barrel or taper barrel.Usually solenoid 2 be such as Fig. 2 a ground along circumferentially being wrapped on the barrel of barrel xsect, the L length direction of radiating part and barrel is axially identical at this moment.See Fig. 4 a to Fig. 4 c and Fig. 5 a to Fig. 5 c for the heat radiating fin structure of taper barrel, correspond respectively to microcephaly's perk as heat radiator and major part perk as heat radiator (described microcephaly's perk and major part perk are respectively the fin section on the right side of Fig. 4 a and Fig. 5 a), then the fin section of Fig. 4 a and Fig. 5 a is docked each other, form the air channel structure shown in Fig. 4 c and Fig. 5 c.Particularly, the shape (such as trapezoidal or triangle) less than the free-ended overall width WD1 of heat conduction bar into the free-ended overall width WD2 of heat radiator is opened in the tiling of the radiating part shown in Fig. 4 a; Similarly, the shape greater than the free-ended overall width WD1 of heat conduction bar into the free-ended overall width WD2 of heat radiator is opened in the tiling of radiating part shown in Fig. 5 a, as long as the free-ended overall width WD2 of heat radiator among Fig. 4 a is identical or close with the free-ended overall width WD2 of the heat radiator among Fig. 5 a, these two radiating parts in its heat radiator free end docking separately, just can be realized that the present invention is to the air cooling system air channel structure of taper barrel.Remaining structure is identical with the cylindrical barrel of Fig. 3 a to 3c with installation.In the situation of Fig. 4 a and Fig. 5 a, each sticks up heat radiator the width D of fin structure and/or sticks up identical or different that the clearance C of fin structure can be with Fig. 3 a, decides according to the tapering size of barrel.Each width D of sticking up fin structure of described heat radiator is preferably 3 to 5mm, and the clearance C of sticking up fin structure is preferably 1 to 4mm.
Radiating part is owing to adopt plastic material to make, therefore can radiating part be close on the barrel 4 easily with instruments such as mallet or plastics mallets, radiating part is not strict with the diameter dimension of barrel 4, does not form the closed loop of prolonging barrel 4 circumferencial directions as long as do not cause radiating part to center on after barrel 4 is installed.
The heat conduction bar 7 of radiating part is close to barrel 4 under the compression of solenoid 2 and heat insulation layer 3, so just can stick up fin structure 52 to the heat of barrel 4 by what heat conduction bar 7 was transmitted to heat radiator 5, take away heat by forced draft, thereby reduce the temperature of barrel 4 interior materials.In order to increase heat conduction efficiency, can between heat conduction bar 7 and barrel 4 outer walls, be coated with heat-conducting glue; Can be made into the schistose texture of twisting certain angle with sticking up fin structure 52 in order to increase radiating efficiency, can increase the efficiently radiates heat area like this, increase the turbulence degree of wind.
In installation process, if the temperature sensor extension line produce to hinder radiating part, the sticking up fin structure and can conveniently remove of heat radiator.
Should be pointed out that the above embodiment can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.Therefore; although this instructions has been described in detail the present invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can make amendment or be equal to replacement the present invention; and all do not break away from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the protection domain of patent of the present invention.
Claims (10)
1. the air cooling system of an Electromagnetic Heating temperature-controlling system is characterized in that, comprises radiating part and wind-power source, and described radiating part comprises heat conduction bar, heat radiator and air channel; Described heat conduction bar is at least two its length directions and the vertical or approximately perpendicular list structure of the solenoid winding direction of Electromagnetic Heating temperature-controlling system, the outer wall close contact of the controlled target temperature of the side of described heat conduction bar and Electromagnetic Heating temperature-controlling system; Described heat radiator is connected with described heat conduction bar, described heat radiator has the fin structure of sticking up in the part that does not link to each other with the heat conduction bar, and the space that forms between the outer wall that sticks up fin structure and described controlled target temperature of described heat radiator and/or the other parts of radiating part consists of described air channel; The air outlet in described wind-power source is connected with the air inlet in described air channel.
2. air cooling system according to claim 1, it is characterized in that, described heat radiator and/or heat conduction bar are that the nonmagnetic substance good by plasticity, that temperature conductivity is high is made, and/or the xsect of described heat radiator is linear, bent, circular arc or waveform, or the combination of aforementioned at least two kinds of shapes, and/or described heat radiator is sandwich construction.
3. air cooling system according to claim 1 and 2 is characterized in that, described heat radiator and heat conduction bar are integrative-structures.
4. according to claim 1 to one of 3 described air cooling systems, it is characterized in that the thickness of described heat conduction bar is 2 to 4mm; And/or the width of described heat conduction bar is 3 to 5mm, and/or the spacing between a plurality of heat conduction bar is 1 to 4mm.
5. according to claim 1 to one of 4 described air cooling systems, it is characterized in that described heat conduction bar is by removing the lattice structure that remaining part consists of behind a plurality of parallel grooves on the sheet material;
Or described heat conduction bar is by removing the lattice structure that remaining part consists of behind a plurality of parallel grooves on the sheet material; A plurality of heat conduction bars do not connect each other at its free end separately; Or a plurality of heat conduction bars are connected to each other by join domain at its free end separately, the width of described join domain be the distance at this free-ended edge of near the free end of described sheet material groove ends and described sheet material greater than 0 less than or equal to 5mm.
6. according to claim 1 to one of 5 described air cooling systems, it is characterized in that, has connecting portion between described heat conduction bar and the described heat radiator, rotation body structure centered by the described controlled target temperature, described heat conduction bar is circumferentially spaced apart along the external wall of described central rotation, the described fin structure that sticks up is by outwards stretch one section vertical section and form along the extension of described outer wall longitudinal extension along the radial direction of the arbitrary xsect of described central rotation body, vertical section described extension of sticking up fin structure with different radical lengths arranges in opposite directions, in opposite directions vertical section is spaced from each other a distance, forms described air channel;
And/or have connecting portion between described heat conduction bar and the described heat radiator, and described heat radiator is and identical, the parallel or approximately parallel list structure of described heat conduction bar length direction, the width of described connecting portion is 10 to 50mm; And/or the width of the described heat radiator of list structure is 3 to 5mm, and/or the spacing of the described heat radiator of a plurality of list structures is 1 to 4mm.
7. according to claim 1 to one of 5 described air cooling systems, it is characterized in that described heat radiator is arranged to bending structure and sticks up fin structure form by the part of described heat conduction bar;
And/or the described thickness of fin structure that sticks up is less than the thickness of described heat conduction bar;
And/or the described fin structure that sticks up is schistose texture or circular arc body structure with respect to heat conduction bar surface deflections certain angle.
8. an Electromagnetic Heating temperature-controlling system is characterized in that, comprises one of the controlled target temperature that sets gradually from inside to outside, claim 1 to 7 described air cooling system, heat insulation layer, solenoid, insulation heat proof material shell; The two sides of the heat conduction bar of described air cooling system respectively with the outer wall of described controlled target temperature and the inner layer wall close contact of heat insulation layer; Consist of the air channel between the inner layer wall of the heat radiator of described air cooling system and the outer wall of described controlled target temperature and heat insulation layer; Vertical or the near normal of length direction of described solenoid winding direction and described heat conduction bar.
9. Electromagnetic Heating temperature-controlling system according to claim 8 is characterized in that, described heat insulation layer is made by insulating heat insulating material;
And/or scribble heat-conducting glue between described heat conduction bar and the described controlled target temperature outer wall.
10. according to claim 8 or 9 described Electromagnetic Heating temperature-controlling systems, it is characterized in that, the air channel of described air cooling system comprises the layer structure that fin structure consists of of sticking up by at least two heat radiator, and/or sticking up between fin structure periphery and the described insulation heat proof material shell of described heat radiator form the air channel, and/or the space between the outer wall that sticks up fin structure and described controlled target temperature of described heat radiator forms the air channel.
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| CN105717192A (en) * | 2016-04-11 | 2016-06-29 | 爱德森（厦门）电子有限公司 | Sensor for online and high-temperature eddy current monitoring |
| CN106793218A (en) * | 2017-01-23 | 2017-05-31 | 苏州科弗曼机械有限公司 | A kind of on-line heating device of metal hot-working |
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| CN103376807B (en) | 2016-02-03 |
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Denomination of invention: Electromagnetic heating temperature-control system and air cooling system thereof Effective date of registration: 20160708 Granted publication date: 20160203 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: Sanbo Zhongzi Tech Co., Ltd. Beijing Registration number: 2016990000585 |
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