CN2514614Y

CN2514614Y - Electrothermic tube

Info

Publication number: CN2514614Y
Application number: CN 01258301
Authority: CN
Inventors: 甘跃斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-11-29
Filing date: 2001-11-29
Publication date: 2002-10-02
Anticipated expiration: 2011-11-29

Abstract

The utility model discloses an electrothermal tube, comprising a metal outer pipe, wherein the pipe is filled with magnesia dust; two ends of the pipe are separately equipped with metal lead-out sticks; a low-power small-diameter coil heating thread is connected between the two metal lead-out sticks; the periphery of one metal lead-out stick thereof is sleeved with a metal lead-out pipe, and insulating medium is filled between the metal lead-out pipe and the metal lead-out stick; and a high-power large-diameter coil heating thread is connected between the metal lead-out pipe and the other metal lead-out stick. Besides having two functions of heating and warming, the utility model also has the characteristics of saving material, having good process technology, and occupying small space.

Description

A kind of electrothermal tube

The utility model relates to a kind of electrothermal tube.

Electrothermal tube commonly used is single power electrothermal tube, and single power electrothermal tube has single heating function, generally comprises a metal outer pipe, is provided with a heating wire in the pipe, is filled with magnesia powder between heating wire and the metal outer pipe; Also have two power electrothermal tubes on the market, it has heating and is incubated two functions, generally comprise two metal outer pipe, a high power heating wire is housed in the metal tube and is filled with magnesia powder, be used for heating, a low-power heating wire is housed in another root metal tube and is filled with magnesia powder, be used for insulation.More than two types electrothermal tube in use all have its weak point: single power electrothermal tube only has single heating function, though two power electrothermal tubes have heating and are incubated two functions since its processing technology complexity, two-tube occupation space big, be difficult to be shaped arbitrarily and waste of raw materials big and can not satisfy the demand.

The purpose of this utility model be to provide a kind of have heating and be incubated two functions, save material, processing technology is simple, little electrothermal tube takes up room.

The electrothermal tube that the utility model provides, comprise a metal outer pipe, be filled with magnesia powder in the pipe, a metal eduction rod is equipped with at the two ends of pipe respectively, be connected with a heating wire between the two metal eduction rods, the periphery of a metal eduction rod is with a metal extraction tube therein again, is filled with dielectric between metal extraction tube and the metal eduction rod, is connected with a heating wire between metal extraction tube and another root metal eduction rod.

The heating wire that connects between the utility model two metal eduction rods is a low-power minor diameter coil heating silk, is used for heat insulation function; The heating wire that is connected between metal extraction tube and the metal eduction rod is a high power large-diameter coil heating wire, is used for heating function.

The utility model is compared with common two power electrothermal tubes, has the following advantages:

(1) because the utility model only needs a metal outer pipe, so will save material than common two power electrothermal tubes;

(2) the utility model only needs common powder feeding machine once to add the powder operation, and processing technology is simple, good manufacturability; And common two power electrothermal tubes must be with the processing of special powder feeding machine, just must add the powder operation through twice with common powder feeding machine, and processing technology is cumbersome;

(3) the utility model can be as the common any shaping of single power electrothermal tube, and common two power electrothermal tubes are because the structural rigidity of bilateral tubing makes its difficulty that is shaped;

(4) the utility model occupies little space because of size is little, is convenient to arrange use, and for example the insulating pot bottom space is limited, and common two power electrothermal tubes of equal-wattage parameter are difficult to mounting arrangements.

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

Fig. 1 is a structural representation of the present utility model.

As shown in the figure, the utility model electrothermal tube, comprise a metal outer pipe 1, be filled with magnesia powder 2 in the pipe, the two ends of pipe be equipped with respectively a metal eduction rod 3,3 ', two metal eduction rods 3,3 ' between be connected with a heating wire 4, the periphery of a metal eduction rod 3 is with a metal extraction tube 5 therein again, be filled with dielectric 6 between metal extraction tube 5 and the metal eduction rod 3, metal extraction tube 5 and another root metal eduction rod 3 ' between be connected with a heating wire 7.

The utility model two metal eduction rods 3,3 ' between the heating wire 4 that connects be low-power minor diameter coil heating silk, metal extraction tube 5 and metal eduction rod 3 ' between the heating wire 7 that is connected be high power large-diameter coil heating wire.

Claims

1, a kind of electrothermal tube, comprise a metal outer pipe (1), be filled with magnesia powder (2) in the pipe, a metal eduction rod (3,3 ') is equipped with at the two ends of pipe respectively, it is characterized in that: two metal eduction rods are connected with a heating wire (4) between (3,3 '), the periphery of a metal eduction rod (3) is with a metal extraction tube (5) therein again, be filled with dielectric (6) between metal extraction tube (5) and the metal eduction rod (3), be connected with a heating wire (7) between metal extraction tube (5) and another root metal eduction rod (3 ').

2, must ask 1 described electrothermal tube as power, it is characterized in that: the heating wire (4) that connects between the two metal eduction rods (3,3 ') is a low-power minor diameter coil heating silk, and the heating wire (7) that is connected between metal extraction tube (5) and the metal eduction rod (3 ') is a high power large-diameter coil heating wire.