CN201134940Y

CN201134940Y - Electric heating tube

Info

Publication number: CN201134940Y
Application number: CNU2007201941385U
Authority: CN
Inventors: 王晓峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-20
Filing date: 2007-11-20
Publication date: 2008-10-15
Anticipated expiration: 2017-11-20

Abstract

The utility model discloses a straight type electro-thermal tube, which comprises a casing, a ceramic tube, an external binding post, an internal binding post, a ceramic cover, a heating wire, magnesia filling and a ceramic washer, and is characterized in that the ceramic tube is arranged in the casing, the heating wire is externally wound on the outer surface of the ceramic tube, the ceramic cover is covered on the top portion of the casing, the ceramic washer is embedded on the bottom of the casing, the internal binding post and the external binding post are came out from the ceramic cover, the internal binding post is connected with one end of the heating wire after threading through the inner core of the ceramic tube, the external binding post is connected with the other end of the heating wire, and the casing which has been put with content is filled with the magnesia filling. The utility model has the following advantages that the straight type electro-thermal tube fundamentally solves the problem of the electricity leakage or crack emerging in the later period caused by the deflection of the electro-thermal tube from the center shaft of the tube owing to the binding technique, and the usage is much safer, and a lead structure and the helix formation making technique on one end of the straight type electro-thermal tube enables the assembly much simpler and the power expansion more flexible, lengths service life, reduces the volume, and provides great conveniences for cleaning.

Description

Electrothermal tube

Technical field

The utility model relates to a kind of electrothermal tube, specifically a kind of straight type electric heating tube of single-ended lead-in wire.

Background technology

At present, known traditional electrical heat pipe is processed into shape miscellaneous when making, to satisfy the requirement of different utensils and different utensil media.Classify by manufacture craft, straight shape pipe and bending pipe (helix tube) are roughly arranged, what application was the most general at most still is through the bending pipe of bending technique moulding.Although the kind of the shape of electrothermal tube and purposes and heat medium is not quite similar, it makes purpose nothing more than 2 points: the first is located at same end to the two poles of electrothermal tube, brings convenience to the terminal use; It two is in order to increase the length of electrothermal tube in limited usage space, to increase the required area of dissipation of its heating power.Yet because the restriction of materials used mechanical performance and manufacture craft level, the percent defective of bending pipe in actual processing and making process is still high, has brought very big loss to enterprise.In addition, when electrothermal tube uses in water, bending technique during on the one hand owing to the making electrothermal tube makes heating wire depart from the uneven distribution that the tube hub axle occurs, and has not only influenced the working life of electrothermal tube, and has brought great potential safety hazard for people's lives and properties; On the other hand, because the existence of calcium ions and magnesium ions etc. and the difference of various places water quality in the water, along with the passing of heating time, hot water bound incrustation scale weakens the direct conduction of electrothermal tube surface and aqueous medium, reduce the efficiency of heating surface of electrothermal tube, thereby derived the energy loss in the use.Up to the present, electrothermal tube energy consumption problem that causes by incrustation scale and the heating wire uneven distribution that produces through brake forming and electrothermal tube electric leakage (explosion) problem of causing, traditional immersion type heating element does not also have good solution.

The utility model content

The purpose of this utility model is to overcome the deficiency of prior art, a kind of straight type electrothermal tube is provided, can not only fundamentally solve bending technique when making electrothermal tube makes heating wire depart from electric leakage (explosion) problem after electrothermal tube work a period of time that the tube hub axle occurs, and can realize that the convenient of electrothermal tube cleans, solved the easy fouling of electrothermal tube and the energy consumption problem that occurs.

The utility model solves the problems of the technologies described above the technical scheme that is adopted:

A kind of straight type electrothermal tube comprises shell, earthenware, outer terminal, internal wiring terminal, ceramic cap, heating wire, magnesium oxide filler, ceramic blanket.It is characterized in that: described earthenware places in the shell, earthenware is around with heating wire, ceramic cap is stamped at the top of shell, the bottom of shell embeds ceramic blanket, draw internal wiring terminal and outer terminal on the described ceramic cap, described internal wiring terminal passes the inner core of earthenware and is connected with an end of heating wire, and described outer terminal is connected with the other end of heating wire, has inserted the interior magnesium oxide filler of filling of shell of content.

Technical solution adopted in the utility model also comprises:

Described earthenware outer surface has the spiral form groove, and heating wire is around in the spiral form groove.

The afterbody of described internal wiring terminal embeds the refractory ceramics pad.

Described electric heating tube shell is a stainless steel casing.

An end that is positioned at ceramic cap on the shell of described electrothermal tube also can fixedly connected one threaded flange.

Because the utility model has been taked above-mentioned technical measures, it compared with prior art has following advantage:

1, electrothermal tube is type pipe always, has fundamentally solved because of bending technique makes heating wire depart from later stage electric leakage (explosion) problem that the tube hub axle occurs, and uses safer;

2, the lead-in wire of electrothermal tube is drawn from an end, has solved terminal use's assembly problem;

3, electrothermal tube adopts spiral typing manufacture craft, makes power expansion freedom and flexibility more, and the life-span is longer, and volume is littler;

When 4, electrothermal tube uses being threaded of port, make clean convenient flexibly, solved the easy fouling of electrothermal tube really and the energy consumption problem that occurs.

Description of drawings

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

Embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

With reference to accompanying drawing 1, the utility model comprises shell 1, high temperature resistant spiral form earthenware 2, outer terminal 3, internal wiring terminal 4, refractory ceramics lid 5, heating wire 7, magnesium oxide filler 6, refractory ceramics pad 8.An end that is positioned at ceramic cap 5 on the shell 1 also can fixedly connected one threaded flange.Shell 1 can be made of metal material, and the most handy stainless steel material is made.Earthenware 2 places in the shell 1, earthenware 2 outer surfaces have the spiral form groove, heating wire 7 is around in the spiral form groove, internal wiring terminal 4 passes the inner core of high temperature resistant spiral form earthenware 2, and be connected with heating wire 7 overlap joint spot welding, outer terminal 3 is connected with the other end overlap joint spot welding of heating wire 7, the afterbody of internal wiring terminal 4 embeds refractory ceramics pad 8 and is placed in the electrothermal tube shell 1, magnesium oxide filler 6 is filled in the electrothermal tube shell 1 of inserting content, and refractory ceramics lid 5 applies and internal wiring terminal 4 through solid seal glue, outer terminal 3 run through the back with the electrothermal tube shell 1 of inserting content in be connected.

Claims

1, a kind of straight type electrothermal tube comprises shell (1), earthenware (2), outer terminal (3), internal wiring terminal (4), ceramic cap (5), heating wire (7), magnesium oxide filler (6), ceramic blanket (8).It is characterized in that: described earthenware (2) places in the shell (1), earthenware (2) is around with heating wire (7), ceramic cap (5) is stamped at the top of shell (1), the bottom of shell (1) embeds ceramic blanket (8), draw internal wiring terminal (4) and outer terminal (3) on the described ceramic cap (5), described internal wiring terminal (4) passes the inner core of earthenware (2) and is connected with an end of heating wire (7), described outer terminal (3) is connected with the other end of heating wire (7), has inserted the interior magnesium oxide filler (6) of filling of shell (1) of content.

2, electrothermal tube according to claim 1 is characterized in that: described earthenware (2) outer surface has the spiral form groove, and heating wire (7) is around in the spiral form groove.

3, electrothermal tube according to claim 1 is characterized in that: the afterbody of described internal wiring terminal (4) embeds refractory ceramics pad (8).

4, electrothermal tube according to claim 1 is characterized in that: described shell (1) is a stainless steel casing.

5, electrothermal tube according to claim 1 is characterized in that: an end that is positioned at ceramic cap (5) on the described shell (1) can fixedly connected one threaded flange.