CN2458837Y

CN2458837Y - Improved insulator for heater

Info

Publication number: CN2458837Y
Application number: CN 00267682
Authority: CN
Inventors: 谢镇安
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-22
Filing date: 2000-12-22
Publication date: 2001-11-07
Anticipated expiration: 2010-12-22

Abstract

The utility model relates to an improved insulator for a heater, which is composed of a protection barrel, a plurality of insulation insulators and a resistance wire. A plurality of insulation insulators are assembled orderly in the protection barrel in the method of front and back overlapping arrangement. The front ends of the insulation insulators are provided with a positioning part and the shape of the positioning part is the same to the cross section of the protection barrel. The peripheries of the positioning parts are provided with a plurality of through holes. The resistor wire can be arranged and wound on the through hole of each insulation insulator in series. The lower edges of the positioning parts of the insulation insulators are provided with convex parts. The distance of the resistance wire and the protection barrel can be enlarged by the convex parts. Thus the service life of the integral heater is prolonged.

Description

The insulator of improved heater

The utility model relates to a kind of insulating bodies, particularly relates to a kind of insulator that improves the improved heater in heater useful life.

Be provided with heater in the bodies of heater such as general heat-treatment furnace, heating furnace; this heater mainly is as heater by resistance wire; as everyone knows; resistance wire is in having the environment of oxygen; can produce best heating effect, but the residing body of heater environment of resistance wire be not equal aerobic compression ring around, so general dealer utilizes a protection tin resistance wire to be coated; and formation has the environment of oxygen in the protection tube, just can bring into play preferable thermal effect so that make resistance wire be in the oxygen.But this protection tube is all multifactor because of relating to manufacture, cost, hardness etc., so adopt the metal material manufacturing comparatively suitable.Please consult Fig. 1,2 simultaneously, aforementioned heater mainly is made up of a protection tube 10, some insulators 11 and resistance wire 12; Wherein, this protection tube 10 is circular hollow cylinder; the one end is a Closed End; the other end then is open shape; this insulator 11 is to make with pottery magnetic; some insulators 11 are mounted in the protection tube 10 in regular turn in the stacked mode in front and back, and these insulator 11 peripheries are provided with some through holes 13, the through hole 13 that this resistance wire 12 can be connected and is set around each insulator 11.So after resistance wire 12 energisings, even integral heater produces thermal effect, and then bodies of heater uses such as stove, heating furnace are handled in heat supply.Yet, though above-mentioned heater can reach the effect that produces thermal effect, use, study the back in reality and find that structurally there is very big shortcoming in this heater, now is described below:

When resistance wire 12 produces thermal effect in oxygen atmosphere and metal protection tube 10, can make in the protection tube 10 and produce oxide 14 (iron oxide), be to drop in protection tube 10 inwall root edges after this oxide 14 forms; Secondly; when producing thermal effect when resistance wire 12 energisings; produce magnetic field around also making resistance wire 12 simultaneously; therefore; pawn the oxide 14 that falls within protection tube 10 inwall root edges suction because of magnetic field; can assemble to resistance wire 12 directions; with the passing of time after; when touching resistance wire 12 (as shown in Figure 2) when oxide 14 accumulation somes; because of oxide 14 itself is a kind of electric conductor; easily cause between resistance wire 12 and the protection tube 10 and produce short circuit, heater is damaged can not be used, and then has a strong impact on the useful life of heater.

The purpose of this utility model is, for the existing above-mentioned shortcoming of heater is commonly used in improvement, and provides a kind of insulator of improved heater, and it can improve the useful life of heater.

The purpose of this utility model is realized by following technical scheme.

A kind of insulator of improved heater, form by a protection tube, a plurality of insulator and resistance wire, these a plurality of insulators are mounted in the protection tube in regular turn in the stacked mode in front and back, the insulator front end have one with a protection tube identical shaped location division, cross section, the periphery of this location division is provided with a plurality of through holes, and this resistance wire can be connected and is set around the through hole of each insulator; It is characterized in that: the location division lower edge of described insulator is provided with protuberance, by this protuberance resistance wire is improved and the distance of protecting tube, thereby prolongs the useful life of integral heater.

The utility model can improve the useful life of heater

For further understanding technology contents of the present utility model, characteristics and effect, exemplify following preferred embodiment now, and conjunction with figs. is described in detail as follows:

Fig. 1 is a D structure schematic diagram of commonly using heater.

Fig. 2 is an assembled sectional view of commonly using heater.

Fig. 3 is equipped with the exploded perspective organigram of the utility model heater.

Fig. 4 is the D structure schematic diagram of the utility model insulator.

Fig. 5 is another D structure schematic diagram of the utility model insulator.

Fig. 6 is an assembled sectional view of the present utility model.

As shown in Figure 3, the utility model is made up of a protection tube 20, a plurality of insulator 30 and resistance wire 40 (HEATER), wherein:

Protection tube 20 (seeing also Fig. 3) are the hollow cylinders that is made of metal to circle, and the one end is a Closed End, and the other end is to be open shape end face.

A plurality of insulators 30 (seeing also Fig. 3,4); be to make with pottery magnetic and generally be cone shape shape; and insulator 30 is mounted in the protection tube 20 in regular turn in the stacked mode in front and back; insulator 30 front ends have one with a protection tube identical

shaped location division

31,20 cross sections; these location division 31 peripheries are provided with a plurality of through

holes

32, and 31 lower edges are provided with protuberance 33 in the location division.

Resistance wire 40 (seeing also Fig. 3), the through hole 32 that it can be connected and be set around each insulator 30.

In addition, the protuberance 33 of location division 31 lower edges of this insulator 30, except can double wedge shape as shown in Figure 4, convex arc shaped that also can be as shown in Figure 5.

By said structure (seeing also Fig. 6); when a plurality of insulators 30 front and back stacked and be set around the through hole 32 of each insulator 30 for resistance wire 40 series connection after; soon it places and is mounted in the protection tube 20; and; the protuberance 33 of location division 31 lower edges is supported in protection tube 20 inwall root edges; make integral insulation insulator 30 and resistance wire 40 strengthen distance, especially, can make resistance wire 40 raisings of the most approaching protection tube 20 and the distance of protection tube 20.So; also drop even produce oxides 14 in the protection tube 20, and distances also can be strengthened because of resistance wire 40 when adsorbed in the magnetic field that is produced by resistance wire 40 in its inwall root edge; and postpone time of

resistance wire

40 and 20 short circuits of protection tube, make and be able to effective prolongation in useful life of heater.

From the above and embodiment shown in the drawings as can be known, the utility model is strengthened distance because of resistance wire 40, and then reach the purpose of this utility model, with commonly use heater structure and compare, the utlity model has significant practicality and progressive, and the technological means and the structural feature thereof of its utilization are really at first created for this creator, meet the application important document of novel patent, so file an application in accordance with the law.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

A kind of insulator of improved heater, form by a protection tube, a plurality of insulator and resistance wire, these a plurality of insulators are mounted in the protection tube in regular turn in the stacked mode in front and back, the insulator front end have one with a protection tube identical shaped location division, cross section, the periphery of this location division is provided with a plurality of through holes, and this resistance wire can be connected and is set around the through hole of each insulator; It is characterized in that:

The location division lower edge of described insulator is provided with protuberance.