CN204574428U - High temperature high energy efficiency heater - Google Patents

Abstract

The utility model provides a kind of high temperature high energy efficiency heater, comprises the heating tube of the insulation in metal outer pipe and metal outer pipe, and in heating tube, hollow is formed and can allow the cavity that heated medium passes through; In heating tube, be laterally provided with a core of resistance to hot pin, heating wire winding is multi-turn on the core of resistance to hot pin, and each individual pen of the front and back number of turns of heating wire transverse direction staggers mutually an angle.Further, the individual pen shape of the heating wire on the core of resistance to hot pin is wrapped in for oval.Further, the angle that staggers before and after each oval individual pen of heating wire and being uniformly distributed.The utility model can heat the medium of higher temperature relative to traditional heater, and start-up time is short, and significantly improve the effect of temperature fast response, heat exchange efficiency is high.

Description

High temperature high energy efficiency heater

Technical field

The utility model relates to a kind of electric heater structure, especially a kind of superhigh temperature heating, high energy efficiency, the heater structure of response fast.

Background technology

Conventional heating device is by heating wire, and insulation magnesium powder and outer tube composition, wherein heating wire is in heating center, and insulation magnesium powder plays fixing heating wire, the effect of electric insulation and heat transfer, and heated medium is by carrying out heat exchange with outer tube.Therefore original device due to heating wire be not directly contact with heated medium to carry out heat exchange, according to heat conducting characteristic, the temperature of the heating wire of heating part is at least high than outer bushing surface temperature more than 200 DEG C, therefore generally can only be used for the occasion that heating-up temperature is less than 650 DEG C, simultaneously due to the existence of magnesia powder and outer tube, the start-up time causing heater initial heating very long (may more than 1 hour), and controlling the response time also exists larger delayed, therefore be difficult to reach high temperature-controlled precision.

Summary of the invention

For the deficiencies in the prior art, the utility model provides a kind of high temperature high energy efficiency heater, and it can heat the medium of higher temperature relative to traditional heater, and start-up time is short, and significantly improve the effect of temperature fast response, heat exchange efficiency is high.The technical solution adopted in the utility model is:

A kind of high temperature high energy efficiency heater, comprises the heating tube of the insulation in metal outer pipe and metal outer pipe, and in heating tube, hollow is formed and can allow the cavity that heated medium passes through;

In heating tube, be laterally provided with a core of resistance to hot pin, heating wire winding is multi-turn on the core of resistance to hot pin, and each individual pen of the front and back number of turns of heating wire transverse direction staggers mutually an angle.

Further, the individual pen shape of the heating wire on the core of resistance to hot pin is wrapped in for oval.

Further, the angle that staggers before and after each oval individual pen of heating wire and being uniformly distributed.

Further, heating tube adopts glass tube.

Further, the core of resistance to hot pin is ceramic core.

The utility model has the advantage of:

1) adopt heating wire directly to contact with heated medium, relative traditional electrical thermal device, the heating wire of same temperature can heat the medium of higher temperature, and heated medium is the highest can to 1200 DEG C.

2) all fully and heater contact heat-exchanging, velocity of medium is also very fast, and heat exchange efficiency is high for all media, common heater then medium by and the heat exchange of outer tube outer layer, comparatively slowly, heat exchange efficiency is lower for relative medium flow velocity.

3) relative traditional electrical thermal device, eliminates insulation magnesium powder and outer tube, can significantly improve the effect of temperature fast response, when coordinating high performance control system, can reach higher medium temperature-controlled precision.

4) insulation magnesium powder and outer tube is eliminated, the electric heater of same power, can greatly minification and reduce weight, can in transport, the links such as installation are client's cost saving, and due to the less size of equipment, be lost to thermal loss in air also fewer than conventional heater many, therefore have the higher thermal efficiency.

5) the distribution winding arrangement of heating wire is through improving, and employing ellipse is arranged and front and back circle staggers, and relative to traditional circular configuration heating wire, the more excellent heat transfer effect that can reach on the one hand, another aspect is even to dielectric heating.

Accompanying drawing explanation

Fig. 1 is structure of the present utility model composition schematic diagram.

Fig. 2 is that A of the present utility model is to schematic diagram.

Detailed description of the invention

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

The high temperature high energy efficiency heater that the utility model proposes, as shown in Figure 1, comprises the heating tube 2 in metal outer pipe 1 and metal outer pipe 1, and in heating tube 2, hollow is formed and can allow the cavity that heated medium passes through.Metal outer pipe 1 mainly shields, and increases the structural strength of this heater.Heating tube 2 can adopt glass tube, or other can the heating tube of withstand higher temperatures, and heating tube 2 plays electric insulation effect, prevents heating wire and metal outer pipe 1 electrical contact.

In heating tube 2, be laterally provided with a core of resistance to hot pin 4, heating wire 3 is wrapped in multi-turn on the core of resistance to hot pin 4, and the shape of individual pen is that ellipse or class are oval.The core of resistance to hot pin 4 is ceramic core.

Traditional electric furnace heating wire individual pen is all circular and front and back circle overlaps in the horizontal, therefore the structure be not suitable in Fig. 1, because heated medium (such as gas) laterally flows in heating tube 2, the posterosuperior individual pen of flow direction can be blocked by the individual pen in front, and the efficiency of heating surface is not high.

For this reason, heating wire 3 individual pen shape of the present utility model and winding arrangement improve, not only the shape of individual pen is oval or class is oval, and each individual pen of the front and back number of turns of heating wire 3 transverse direction staggers mutually an angle, make heated medium in heating tube 2 during lateral flow, there is not the situation of blocking front and back in the front and back circle of heating wire, carries out heat exchange as far as possible fully, improve the thermal efficiency, the more excellent heat transfer effect that can reach.

More preferably, the angle that staggers before and after each oval individual pen of heating wire 3 and being uniformly distributed, can make heated medium in heating tube 2 during lateral flow, heat more even.

During work, heating wire 3 two ends heating power, and heated medium carries out exchange heat by directly contacting with heating wire, coordinates high precision instrument and control system, can realize outlet medium temperature and control accurately in desired value.

Claims (5)

1. a high temperature high energy efficiency heater, it is characterized in that, comprise the heating tube (2) of the insulation in metal outer pipe (1) and metal outer pipe (1), the interior hollow of heating tube (2) is formed can allow the cavity that heated medium passes through;

In heating tube (2), laterally be provided with a core of resistance to hot pin (4), heating wire (3) is wrapped in the upper multi-turn of the core of resistance to hot pin (4), and each individual pen of the front and back number of turns that heating wire (3) is horizontal staggers mutually an angle.

2. high temperature high energy efficiency heater as claimed in claim 1, is characterized in that:

Be wrapped in the individual pen shape of the heating wire on the core of resistance to hot pin (4) for oval.

3. high temperature high energy efficiency heater as claimed in claim 1, is characterized in that:

The angle that staggers before and after each individual pen of heating wire (3) and being uniformly distributed.

4. high temperature high energy efficiency heater as claimed in claim 1, is characterized in that:

Heating tube (2) adopts glass tube.

5. high temperature high energy efficiency heater as claimed in claim 1, is characterized in that:

The core of resistance to hot pin (4) is ceramic core.