CN2521864Y

CN2521864Y - Surface induction heating long-service life inductor

Info

Publication number: CN2521864Y
Application number: CN 01274259
Authority: CN
Inventors: 周高; 徐卫
Original assignee: ZHEJIANG WANXIANG AUTOMOBILE BEARING CO Ltd
Current assignee: ZHEJIANG WANXIANG AUTOMOBILE BEARING CO Ltd
Priority date: 2001-12-13
Filing date: 2001-12-13
Publication date: 2002-11-20
Anticipated expiration: 2011-12-13

Abstract

The utility model discloses a sensor, which is heated by surface induction and has a long service life. The utility model is provided with an upper induction winding and a lower induction winding; the outside of the windings is equipped with magnetizers; one end of the upper and lower induction windings is connected with a water inlet pipe; the other end of the upper induction winding is connected with a water outlet pipe by a right conduit and the other end of the lower induction winding is connected with the water outlet pipe by a left conduit to infuse water; the left and right conduits and a left plate and a right plate are fixed on an insulation plate. The utility model is characterized in that the utility model is quenched through hub single induction and the quality reaches requirements of drawings and various standards; the sensor can be used for a long time without repair which has been proved by production and even if the magnetizer is burnt, people can replace the magnetizer at the work station and the production is not affected.

Description

The long-life inductor of surface induction heating

Technical field

The utility model relates to a kind of long-life inductor of surface induction heating.

Background technology

When the new product hub that the vapour axle is developed in recent years begins to manufacture experimently, what impewdance matching adopted is homemade inductor, onlyed demand at that time and made simply, deal with problems in time, do not go to consider problems such as useful life, the heat efficiency, productivity ratio, having high input to 35016/01 product, former homemade inductor is found in the batch process back and the sensing apparatus Co., Ltd that distils is not long for the inductor life-span that our company provides, generally about 3000, that is to say that 6 classes of continuous production (three days) have just damaged.This has not only wasted man-hour, the material of making inductor, and the more important thing is has influenced production, because inductor is changed, debugs, and sample preparation is very long detection time, greatly reduces utilization rate of equipment and installations, extends manufacture cycle, and influences delivery date.

The copper tube external diameter that originally old type inductor adopts is φ 10, and wall thickness is 1mm.The inductor magnetic conductor gets on 504 glue bonds, it is loosening to advance long viscose glue easy burn-out magnetic conductor sheet of operating time one on the high temperature side, under the powerful graviational interaction of answering the varying magnetic field generation, circular magnetic conductor sheet rotates around copper tube runs into workpiece, cause sparking burn workpiece, this inductor just lost efficacy and can not use.Another failure conditions, be exactly to burn out, adopt thick-walled pipe to do inductor afterwards because inductor copper tube sectional area is too little, and electric current is big, since thickness of pipe wall the copper tube internal diameter diminish, the flow of cooling water also once repeatedly occurred inadequately because of cooling off the bad phenomenon that burns out inductor.

Summary of the invention

The purpose of this utility model provides a kind of long-life inductor of surface induction heating.

It has last induction coil and following induction coil, the induction coil outside is provided with magnetic conductor, upper and lower induction coil one end and water inlet pipe join, the last induction coil other end joins through right conduit and outlet pipe, the following induction coil other end joins through left conduit and outlet pipe, and water flowing, left and right conduit and left and right pole plate are separately fixed on the insulation board.

The utility model has the advantages that:

1) it is used for wheel hub list impewdance matching, and quality all reaches the requirement of drawing and each standard;

2) production practices proof inductor uses for a long time, need not repair, even the magnetic conductor scaling loss can be changed at station, does not influence production.

Description of drawings

Fig. 1 is the structural representation of the long-life inductor of surface induction heating;

Fig. 2 is the structure vertical view of the long-life inductor of surface induction heating.

Embodiment

The long-life inductor of surface induction heating has last induction coil 9 and following induction coil 11, the induction coil outside is provided with

magnetic conductor

8,10, upper and lower induction coil one end and water inlet pipe 12 join, the last induction coil other end joins with outlet pipe 3 through right conduit 6, the following induction coil other end joins with outlet pipe 2 through left conduit 7, and water flowing, left and right conduit and left and

right pole plate

1,4 are separately fixed on the insulation board 5.

Said upper and lower induction coil is square special-shaped copper pipe.Magnetic conductor is the silicon steel sheet of δ=0.1～0.35 millimeter.

The copper tube of making the inductor employing generally is that wall thickness is 1.2～2.0mm, its external diameter is not all right too greatly, because of the sphere diameter of hub raceway groove generally is R5～R6, inductor copper tube external diameter is too big, the induction heating district enlarges, surpassing raceway groove is unallowed in addition, caliber is too little also not all right, on the one hand, the too for a short time requirement that does not reach the raceway groove quench zone in induction heating district, caliber is little on the other hand, endoporus is too little, cooling water flow is not enough, and can generate heat during work burns out, and pilot production proves that it is that φ 10 is for best that the copper tube of doing inductor selects external diameter.

It is that the copper tube of 1mm is done inductor that hub begins to select for use wall thickness, because of too little its capacity in cross section inadequately at work, power is big to be blown easily, changed the copper tube that wall thickness is 2mm afterwards into, but, reduced the internal diameter of copper tube because wall thickness increases, cause the flow of cooling water also once repeatedly to burn out inductor inadequately, up to changing wall thickness afterwards into is 1.5 millimeters copper tube, just reaches inductor and has both had good cooling capacity, can guarantee the perfect combination of the required load-bearing capacity of bearing of work again.

The power supply of 8000Hz, it is that 0.1～0.35 silicon steel sheet is made that magnetic conductor is selected thickness for use, hub begins to adopt is that wall thickness is that the silicon steel sheet of 0.5mm substitutes, this silicon steel sheet does not have phosphatization to handle, and can not insulate between sheet, effect is also bad, adopting wall thickness at last is the silicon steel sheet of 0.35mm, has made phosphatization and has handled, and effect is fine.

By the inductor failure analysis of bearing, prevent that the inefficacy factor from producing, inductor will improve its original design, its structure main feature is by original single bonding mode with magnetic conductor, be improved to bonding and inlay the form that combines, even at high temperature viscose glue burns out, magnetic conductor inlays on the copper tube of square-section and also can not come off and rotate, and inductor does not use in the same old way and can lose efficacy.

Claims

1. the long-life inductor of surface induction heating, it is characterized in that it has last induction coil [9] and following induction coil [11], the induction coil outside is provided with magnetic conductor [8], [10], upper and lower induction coil one end and water inlet pipe [12] join, the last induction coil other end joins through right conduit [6] and outlet pipe [3], the following induction coil other end joins through left conduit [7] and outlet pipe [2], and water flowing, and left and right conduit and left and right pole plate [1], [4] are separately fixed on the insulation board [5].

2. the long-life inductor of surface induction heating according to claim 1 is characterized in that said upper and lower induction coil is square special-shaped copper pipe.

3. the long-life inductor of surface induction according to claim 1 heating is characterized in that said magnetic conductor is the silicon steel sheet of δ=0.1～0.35 millimeter.