CN2738514Y

CN2738514Y - Inductive distributing heater

Info

Publication number: CN2738514Y
Application number: CN 200420104528
Authority: CN
Inventors: 沈学忠; 张峻; 李军伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-29
Filing date: 2004-10-29
Publication date: 2005-11-02
Anticipated expiration: 2014-10-29

Abstract

The utility model provides an inductive distributing heater, which comprises a container and a coil curl. The coil curl is arranged at the outer part of the container and is connected with a variable frequency power supply. The inductive distributing heater is characterized in that a heating unit which is parallel, vertical or cross with the axial line of the container is arranged in the container. The inductive distributing heater solves the following problems existing in the induction heater in the prior art: the heat-transfer efficiency is low, the induction heater in the prior art does not uniformly heat, and the effect of the diameter of the container to the induction heater in the prior art is relatively big, etc. The variable frequency power supply is controlled to cause the heating unit to be accurately controlled in a needed temperature range. In addition, the surface area of the heating unit can be much bigger than the inner surface area of the container, and thus the contact area of the heating unit and materials can be greatly increased, which is favorable to enhance the heat-transfer efficiency. The distribution state of the heating unit can cause the inner temperatures of the whole container to approach to the same temperature to cause the temperature difference of each part to be greatly reduced, thus the temperature rising time and the heat-up time of the materials are shortened, meanwhile, the materials can be ensured to be uniformly fast heated, and thus the production efficiency is increased.

Description

Respond to distributed heater

Technical field

The utility model relates to a kind of induction heating equipment, relates in particular to the distributed heater of a kind of induction, belongs to electric heating design and manufacturing field.

Background technology

Induction heating equipment not only is widely used in industrial production sectors such as melting, diathermanous, quenching, bend pipe, and can obtain the equipment of accurate temperature control and be widely used in industries such as chemical industry, mineral products as a kind of.In these industries, existing heater all is induction coil to be enclosed within the outside of whole heating container, and heated material is placed in the container, respond to container during heating earlier, make it to become the heat belongings, pass through it afterwards again, thereby finish heating material with the heat transferred material.Because heated material belongs to non-conductive, non-magnetic object mostly, directly induction heating can only be heated indirectly by container, and therefore, container is the device that holds material, also is simultaneously the heater that transmits heat to material.This class container has crucible, or ducted one section, and is made by conductive magneto-conductive materials such as graphite, stainless steel, ordinary steels.For small container, less because of its diameter, the efficient that heat is transmitted can not cause too much influence to whole heating process.But along with the increasing of container diameter, the efficient that heat is transmitted will be more and more lower, and can not realize even heating, finally cause whole heating process elongated, therefore, not satisfy industrial requirement.Particularly when internal tank is in vacuum state, because the medium that does not have air to transmit as heat, the efficient that whole heat is transmitted will be lower.In addition, in the production process,, often to strengthen the power output of induction heater in order to raise the efficiency, not only power consumption, but also can cause container local overheating phenomenon, thus do not reach industrial specification requirement.As seen, for non-conductive and non-magnetic conduction material, again to its mode that heats, in large diameter container, can not satisfy industrial needs after the sensed heating of employing container.Therefore be necessary prior art is improved.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of prior art, and the not receptor size influence of a kind of heat transfer efficiency is provided, and homogeneous heating, the distributed heater of the induction that the heat efficiency is high.

The utility model is realized by following technical proposal: the distributed heater of a kind of induction, comprise container and coil, and coil is located at external container and is linked to each other with variable frequency power supply, it is characterized in that being provided with in the container and its parallel axes or heater vertical or that intersect.

Described heater is column or plates, wherein column be solid or hollow cylinder, cone, oval cylinder, triangulo column, prism, polygonal cylinder in one or several combination; Sheet is solid or cored slab, piece, net in one or several combination.

Described heater is arranged to the integral body that is connected as a single entity with container, and makes with same material, when container and heater sensed and when becoming heater, can evenly heat to the material in the container or by the material in the container.

Described heater is arranged to the monomer that separates with container, and makes with different materials respectively, makes container become the carrier that only holds material or only allow material pass through, and the heating of material is then finished by the heater in the container.

Described heater is column or the plates that conduction, permeability magnetic materials such as graphite, stainless steel, ordinary steel are made, and generates heat so that respond to.

Described container is a bottom lock, the ducted body of open-top, and column or sheet-shaped heating element fixed interval are in the bottom of ducted body, so that the material that is contained between the container internal heat generation body is heated.

Described container is the ducted body of both ends open, and column or sheet-shaped heating element pass ducted body at interval, so that the material by therebetween is heated.

The utility model compared with prior art has following advantage and effect: adopt technique scheme, difficult problems such as the heat transfer efficiency that induction heater exists in the prior art is low, heating is inhomogeneous, the influence of receptor diameter is bigger have been solved, by control, can allow heater accurately be controlled in the temperature required scope to variable frequency power supply.In addition because the surface area of heater can be accomplished the internal surface area much larger than container, make it to obtain bigger raising with the contact area of material, help improving heat transfer efficiency, the distribution that adds heater can allow the entire container temperature inside reach unanimity, the temperature difference at each position is reduced greatly, therefore, in the intensification of shortening material, in heating time, can also guarantee material evenly, fast the heating, thereby enhance productivity.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is another structural representation of the utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further, is not limited in this but hold within the utility model.

As Fig. 1, coil 1 is formed by the copper pipe coiling, and be around in the outer wall of container 2, its two ends link to each other with variable frequency power supply respectively, container 2 is graphite or metallic crucible, and heater 3 is the solid graphite rod of cylinder, and the interval also is evenly distributed in container 2 bottoms, it and container 2 hold together, and its axis parallels with the axis of container 2.Material is placed between the container internal heat generation body, so that heated evenly and rapidly.Its operation principle is: when flowing through the alternating current I of required frequency in the coil 1, set up the alternating flux of same frequency thus, in container 2, produce induced potential, different electromotive forces produces eddy current, make container 2 heatings, at this moment heater 3 also is in the middle of the magnetic field of a variation, because heater 3 is made of conduction, permeability magnetic material, its inside generates heat with regard to forming eddy current i under the effect of variation magnetic field, can carry out even Fast Heating to the material that is put between the container internal heat generation body 3 like this.

As Fig. 2, coil 1 is formed by the copper pipe coiling, and be around in the outer wall of container 4, its two ends link to each other with variable frequency power supply respectively, container 4 is graphite or metallic conduit, and heater 5 is the cylinder hollow steel pipe, also evenly passes in the container 4 at interval, material flows through between container internal heat generation body 5, thereby realizes even Fast Heating.

Claims

1, the distributed heater of a kind of induction comprises container and coil, and coil is located at external container and is linked to each other with variable frequency power supply, it is characterized in that being provided with in the container and its parallel axes or heater vertical or that intersect.

2, heater according to claim 1, it is characterized in that described heater is column or plates, wherein column be solid or hollow cylinder, cone, oval cylinder, triangulo column, prism, polygonal cylinder in one or several combination; Sheet is solid or cored slab, piece, net in one or several combination.

3, heater according to claim 1 is characterized in that described heater is arranged to the integral body that is connected as a single entity with container, perhaps is arranged to the monomer that separates with container.

4, heater according to claim 1 is characterized in that described heater is column or the plates that conduction, permeability magnetic materials such as graphite, stainless steel, ordinary steel are made.

5, heater according to claim 1 is characterized in that described container is a bottom lock, the ducted body of open-top, and column or sheet-shaped heating element fixed interval are in the bottom of ducted body.

6, heater according to claim 1 is characterized in that described container is the ducted body of both ends open, and column or sheet-shaped heating element pass ducted body at interval.