CN2305823Y

CN2305823Y - Hollow electric heating tube with heat conducting internally and externally

Info

Publication number: CN2305823Y
Application number: CN 97207359
Authority: CN
Inventors: 杨伦发
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-03-17
Filing date: 1997-03-17
Publication date: 1999-01-27
Anticipated expiration: 2007-03-17

Abstract

The utility model relates to a hollow electric heating pipe with internal and external heat conducting, which comprises metal pipes, an electric heating wire and crystallized magnesia filler. The metal pipes are an internal metal pipe 9 and an external metal pipe 1 which have different pipe diameters, and polytetrafluoroethene protective layers 5 are sprayed on the inner cavities of the internal and the external metal pipes and the surfaces of the internal and the external metal pipes. The utility model has the advantages of simple external shape, big heat radiating area, high heat efficiency and power saving. With the utility model sprayed with the polytetrafluoroethene, when water is heated and other beverage is boiled, no water scale and other deposited dust are deposited on the inner cavities of the heating pipe and the external pipe. The service life of the electric heating pipe is extended, and the sanitation degree of beverage is improved.

Description

The inside and outside heat transfer electric heating tube of hollow

The utility model proposes a kind of device that is applicable to liquid heat--the inside and outside heat transfer electric heating tube of hollow.

Prior art is that the heating resistor line is set in metal tube, as heater, also be filled with crystal magnesium oxide, yet its heat conduction only is confined to the outer surface of metal tube, so heat transfer property is relatively poor.

The purpose of this utility model is the defective at above-mentioned existence, proposes the inside and outside heat transfer electric heating tube of a kind of hollow.

Technical solution of the present utility model:

Comprise metal tube, heating wire, crystal magnesium oxide filler, metal tube is that two calibers different interior metal tubes 9 and outer metal tubes 1 are arranged, and sprays polytetrafluoroethylene or polyimides protective layer (5) on the inner chamber of inside and outside metal tube and surface.

Spiral coil heating wire 2 can be two connector lugs or three connector lugs;

Can establish securing member 8 on the top of inside and outside metal tube, on securing member 8, establish seal plug 4.

Advantage of the present utility model:

Profile is simple, and area of dissipation is big, heat efficiency height.Can make the liquid in the container produce eddy current, accelerate the temperature required balance of liquid, shorten heating time, save electric energy.Owing to sprayed polytetrafluoroethylene, add hot water and boil other beverage not scaling and other Integrated Chip on heating tube inner chamber and outer tube, increased the useful life of electric heating tube, improved the sanitation degree of beverage.Available common iron pipe replaces valuable stainless steel and titanium pipe heating chemical industry solutions, and heating tube itself do not have metal ion to separate out, and has guaranteed the purity of solution, has prolonged the service time of electrothermal tube.

Accompanying drawing 1 is a structural representation of the present utility model.Among the figure 7 is insulators, the 6th, and the conduction lead-out wire.

Accompanying drawing 2 is sectional structure schematic diagrames of Fig. 1.

Accompanying drawing 3 is structural representations of two connector lugs and three connector lug spiral coil heating wire.

3-1 figure among Fig. 3 is the expansion schematic diagram of two connector lugs, and 3-2 figure is the schematic diagram of the spiral coil heating wire of two connector lugs.3-3 is the expansion schematic diagram of three connector lugs, and 3-4 figure is the schematic diagram of the spiral coil heating wire of three connector lugs.

Further describe technical solution of the present utility model below in conjunction with accompanying drawing:

The inside and outside heat radiation of hollow electric heating tube is that the metal tube that two calibers do not wait is made up with one heart, and the metallic resistance silk is put in the crack betwixt, and closely fills up the crystal magnesium oxide of good thermal conductivity and insulating properties at space segment.Can on electrothermal tube inner chamber and outer tube, spray polytetrafluoroethylene as protective layer.Mainly be applicable to liquid heat.

Claims

1, the inside and outside heat transfer electric heating tube of hollow; include metal tube, heating wire, crystal magnesium oxide filler; it is characterized in that having two interior metal tube (9) and outer metal tubes (1) that caliber is different, spraying polytetrafluoroethylene or polyimides protective layer (5) on the inner chamber of inside and outside metal tube and surface.

2, the inside and outside heat transfer electric heating tube of hollow according to claim 1 is characterized in that spiral coil heating wire (2) can be two connector lugs or three connector lugs.

3, the inside and outside heat transfer electric heating tube of hollow according to claim 1 is characterized in that and can establish securing member (8) on the top of inside and outside metal tube, establishes seal plug (4) on securing member (8).