CN201623882U

CN201623882U - Electromagnetic heating device

Info

Publication number: CN201623882U
Application number: CN2010201528182U
Authority: CN
Inventors: 王国祥
Original assignee: XIAMEN ENERGY TECHNOLOGY Co Ltd
Current assignee: XIAMEN ENERGY TECHNOLOGY Co Ltd
Priority date: 2010-03-31
Filing date: 2010-03-31
Publication date: 2010-11-03
Anticipated expiration: 2020-03-31

Abstract

The utility model relates to the field of electric power heating device, and particularly relates to an electromagnetic heating device. An electromagnetic heating cylinder provided by the utility model is characterized in that a layer of heat insulation cotton is arranged on the outer wall of a heating cylinder body; multiple groups of electromagnetic induction coils are wound outside the heat insulation cotton; each group of electromagnetic induction coils are electrically connected with an electromagnetic controller; and then a plurality of electromagnetic controllers are electrically connected with an electrical control cabinet. A fixing bandage is wound outside the heat insulation cotton, and then the electromagnetic induction coils are wound on the fixing bandage. The utility model performs the indirect heating to the heating cylinder in an electromagnetic heating way, so the structure is relatively simpler, the energy conservation is more effective, and the service life is also longer.

Description

A kind of electromagnetism cartridge heater

Technical field

The utility model relates to electric power heater field, relates in particular to electromagnetic heater, particularly is applied to the electromagnetic heater of plastic industries such as injection molding machine, grit maker, bench, inflation film manufacturing machine.

Background technology

At plastic industry, need heater in the plastics automated production process equipments such as injection molding machine, grit maker, bench, inflation film manufacturing machine, plastic regenerator plastics are carried out the heat fused processing.Traditional heater generally is to adopt resistance wire heating, the mode that heats to cartridge heater by heat conduction then.Such firing equipment has certain defective, such as: (1) thermal loss is big: this cartridge heater is by the resistance wire coiling, the inside and outside two-sided heating of cylindrical shell circle, the heat conduction of its inner face (being close to the cartridge heater part) is to cartridge heater, and the heat major part of outside is lost in the air, causes the loss and waste of electric energy.(2) ambient temperature rises: because heat scatters and disappears in a large number, ambient temperature is very big to the production environment influence in rising, especially summer, and the work on the spot temperature has all surpassed 45 ℃, device context has to adopt air-conditioning to reduce temperature, and this causes the secondary waste of the energy again.(3) useful life is short, maintenance capacity is big: owing to adopt the resistance wire heating, its heating-up temperature up to 800 ℃ about, resistance wire blows because of high temperature ageing easily, therefore, the workload of maintenance is relatively large about about half a year useful life for electric heating coil commonly used.

The utility model content

Therefore, at above-mentioned deficiency, the utility model proposes a kind of improved technical scheme.The utility model is by the electromagnetism mode of heating cartridge heater to be carried out indirect, and not only structure is simpler relatively for it, and more energy-conservation effective, and useful life is also longer.

The technical solution of the utility model is:

Electromagnetism cartridge heater of the present utility model is at the heating cylinder body outer wall one deck insulation adiabatic cotton to be set, described insulation adiabatic cotton twines the plurality of electromagnetic induction coil outward, every group of electromagnetic induction coil is electrically connected at an electromagnetic controller, and described a plurality of electromagnetic controllers electrically access to an electrical control cabinet again.

Further, described insulation adiabatic cotton is outer around immobilizing bandage, electromagnetic induction coil is twined thereon again.

Further, above-mentioned immobilizing bandage is provided with the yellow wax flaggy outward again, electromagnetic induction coil is twined thereon again.

Further, cover one deck protective cover again outside the described electromagnetic induction coil.

Further, the circuit of described electromagnetic controller is: connect and insert a rectifier bridge unit behind a fuse, the filter unit in the mains electricity input end, connect first output of LC concussion unit again as described electromagnetic induction coil, connect behind the LC concussion unit by the current transformer of IGBT unit drives second output as described electromagnetic induction coil, described IGBT unit is to insert its control utmost point by control circuit unit series driver and voltage stabilizing to managing the back.

The utility model adopts such scheme, and the advantage that has is:

1, energy-efficient: the heat efficiency under the equal conditions, more than 60%, shortens 2/3 than the economize on electricity of resistance-type mode of heating warm-up time up to more than 90%.

2, reliable: intelligence control system and perfect protection system guarantee equipment long-term safety reliability service.

3, reduction expense: heating part adopts the construction of cable, and heating cable itself can not produce heat, long perfomance life.Avoided the resistance-type heating to need the disadvantage of often safeguarding and regularly replacing, this product later stage does not have maintenance cost substantially.

4, improve environment: traditional resistance-type firing equipment is by the heat exchange pattern heating, thereby has wasted a large amount of energy.So just cause equipment appearance temperature too high, production environment is become badly, very big to the human injury.Electromagnetism cartridge heater of the present utility model makes the outer temperature of machine reach available hand and touches, and has improved production environment energetically, reduces traditional cooling installation expense simultaneously.

Description of drawings

Fig. 1 is a general illustration of the present utility model;

Fig. 2 is the cutaway view of cartridge heater of the present utility model;

Fig. 3 is the circuit theory diagrams of electromagnetic controller of the present utility model.

Embodiment

Now with embodiment the utility model is further specified in conjunction with the accompanying drawings.

Consult illustrated in figures 1 and 2ly, electromagnetism cartridge heater of the present utility model is at heating cylindrical shell 1 outer wall one deck insulation adiabatic cotton 2 to be set, the described insulation adiabatic cotton 2 outer plurality of electromagnetic induction coils 3 that twine.Expansion, can cover one deck protective cover 4 again outside it, perhaps do not cover and directly be exposed to air.Every group of electromagnetic induction coil 3 is electrically connected at an electromagnetic controller 5, and described a plurality of electromagnetic controllers 5 electrically access to an electrical control cabinet 6 again.Preferably, for Motionless electromagnetic induction coil 3 better, described insulation adiabatic cotton 2 is outer around immobilizing bandage 31, electromagnetic induction coil 3 is twined thereon again.Preferred, around immobilizing bandage 31, the described immobilizing bandage 31 outer yellow wax flaggies that are provided with again twine electromagnetic induction coil 3 thereon again outside the described insulation adiabatic cotton 2.

Consult shown in Figure 3, the circuit of described electromagnetic controller 5 is: mains electricity input end POW-L, the POW-H fuse FUSE that connects, filter unit RY1, insert a rectifier bridge cells D 1 behind the C7, connect LC concussion unit L1 again, C1～C4 is as first output of described electromagnetic induction coil 3, LC shakes unit L1, connect behind C1～C4 by IGBT unit IGBT1, the current transformer CT1 that IGBT2 drives is as second output of described electromagnetic induction coil 3, described IGBT unit IGBT1, IGBT2 is by control circuit unit IC1 series driver G1, G2 and voltage stabilizing are to pipe ZD1, ZD2, ZD3, insert its control utmost point behind the ZD4.

The utility model carries out dither by what each electromagnetic controller 5 of electrical control cabinet 6 control utilized electromagnetic induction coil 3 to heating cylindrical shell 1, directly makes heating cylindrical shell 1 heating that adds the metal gun barrel.And the plastics of injection molding machine enter in this heating cylindrical shell 1 by hopper; carry out continuous productive process by plastics machine screw rod; the heating cylindrical shell 1 outer insulation adiabatic cotton 2 that covers is used for adiabatic heat-insulation; prevent that the heat that heats cylindrical shell 1 from coming out; the protective cover 4 of electromagnetism cartridge heater outside is used to protect this electromagnetism cartridge heater not to be damaged; described heating cylindrical shell 1 is provided with a plurality of points for measuring temperature, is used for better regulating and control the heating power of electromagnetic induction coil 3, keeps constant temperature better.The utility model converts civil power to the high frequency electric source output that drives electromagnetic induction coil 3 work by electromagnetic controller 5, produce the alternating magnetic field that changes at a high speed by electromagnetic induction coil 3, utilize this alternating magnetic field to make the heating cylindrical shell 1 of the metal of magnetic conduction produce countless eddy current, directly heating.Therefore, the utility model is a kind of efficient and indirect mode of heating, is specially adapted to plastic industries such as injection molding machine, grit maker, bench, inflation film manufacturing machine.

Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; can make various variations to the utility model in the form and details, be protection range of the present utility model.

Claims

1. electromagnetism cartridge heater, it is characterized in that: one deck insulation adiabatic cotton (2) is set at heating cylindrical shell (1) outer wall, the outer plurality of electromagnetic induction coil (3) that twines of described insulation adiabatic cotton (2), every group of electromagnetic induction coil (3) is electrically connected at an electromagnetic controller (5), and described a plurality of electromagnetic controllers (5) electrically access to an electrical control cabinet (6) again.

2. electromagnetism cartridge heater according to claim 1 is characterized in that: described insulation adiabatic cotton (2) is outer around immobilizing bandage (31), electromagnetic induction coil (3) is twined thereon again.

3. electromagnetism cartridge heater according to claim 2 is characterized in that: the outer yellow wax flaggy that is provided with again of described immobilizing bandage (31), twine electromagnetic induction coil (3) thereon again.

4. according to claim 1 or 2 or 3 described electromagnetism cartridge heaters, it is characterized in that: described electromagnetic induction coil (3) outside covers one deck protective cover (4) again.

5. electromagnetism cartridge heater according to claim 1, it is characterized in that: the circuit of described electromagnetic controller (5) is: mains electricity input end (POW-L, POW-H) series connection one fuse (FUSE), filter unit (RY1, C7) a rectifier bridge unit (D1) is inserted in the back, connect LC concussion unit (L1 again, C1～C4) is as first output of described electromagnetic induction coil (3), LC shakes unit (L1, C1～C4) back connects by IGBT unit (IGBT1, IGBT2) current transformer of Qu Donging (CT1) is as second output of described electromagnetic induction coil (3), described IGBT unit (IGBT1, IGBT2) be by control circuit unit (IC1) series driver (G1, G2) and voltage stabilizing to the pipe (ZD1, ZD2, ZD3, ZD4) its control utmost point is inserted in the back.