CN2807678Y - Electric heater used in air directly - Google Patents

Abstract

The utility model provides an electric heater directly used in air. The electric heater is provided with heating elements which comprises high-resistance electrothermal wires, heat conducting insulating materials and an outer tube from inside to outside. Protrusions in a radial rib shape are arranged on the outer wall of the outer tube. The electric heater can be directly used in various heating appliances; the heating process needs no media such as heat transfer oil, etc. The utility model has the advantages of fast heat radiation, low cost and recycling expense and environment protection.

Description

A kind ofly be directly used in airborne electric heater

Technical field

The utility model belongs to heating equipment, particularly relates to a kind of airborne electric heater that is directly used in.

Background technology

In the prior art, the heater element of conventional electric heater generally is to occur with the electrothermal tube form, as shown in Figure 1, comprise high resistant heating wire 1 from the inside to the outside, heat-conducting insulation material 2 and outer tube 3, the heat that high resistant heating wire 1 energising back produces is delivered to outer tube 3 through heat-conducting insulation material 2, and the outer surface from outer tube 3 distributes heat supply again.Its limitation is that the external surface area of outer tube 3 is limited, surface loading (being the electrical power on the unit external surface area) is big, the surface temperature height, often can not be directly used in the air and heat, use and need place as other medium of heat conduction wet goods, by medium its heat is passed to the housing of adorning medium, the manufacturing cost height, and bring such as problems such as environmental protection.

Chinese patent application number is that 02132558.8 application for a patent for invention discloses a kind of electric finned-pipe heater, comprise electric heating tube, finned tube, finned tube is by whole rolling the forming of metal aluminum pipe, and electric heating tube is made by metallic aluminium or metallic copper, and finned tube becomes overall structure with the electric heating tube Joint.This technology can be used as the heater element of heat-producing devices such as cross-ventilation formula electric heater, directly in air, heat, need be by other heat-conducting mediums, promoted the technology height of firing equipment to a certain extent, but, because the fin of the finned tube that this technology adopts discharges side by side, its two adjacent fins are to common interval heat radiation, so area of dissipation is little, and construction machine, can't be according to the structure of different application design economical with materials and heating effect the best, still exist to remain improved defective.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of area of dissipation big, can be directly used in the electric heater that heats in the air.

For realizing this purpose, the utility model adopts following technical scheme:

A kind ofly be directly used in airborne electric heater, it is provided with heater element, and described heater element comprises the high resistant heating wire from the inside to the outside, and heat-conducting insulation material and outer tube, the outer wall of described outer tube are provided with radial pattern muscle shape projection.By radial pattern muscle shape projection, strengthened the area of dissipation of outer tube, make the utility model to be directly used in the air and heat.

In the technique scheme, described radial pattern muscle shape projection can adopt one or more, and radial pattern muscle shape projection can be difformity, according to different needs, can be designed to circle, square or other shapes, also muscle shape projection can be set again above the radial pattern muscle shape projection, realize " muscle is arranged on the muscle ",, take different shapes with according to different applications, design big as far as possible area of dissipation, reach best heats.

Can pass through the mutual cross-over connection of bar muscle between the different radial pattern muscle shape projection of the present utility model, with further increase area of dissipation, the bar muscle can adopt and radial pattern muscle shape projection identical materials, then can in the course of processing and radial pattern muscle shape projection moulding one, bar muscle between the muscle shape projection can fuse even, forms the jumper ring that is surrounded on outside the outer tube, makes the utility model be sleeve structure, described sleeve pipe jumper ring can also take different shapes, as square, circle etc.

The utility model can comprise a plurality of heater elements, when adopting multiple thermal element structure, bar muscle between described radial pattern muscle shape projection or muscle shape projection can be coupled to each other with the outer tube of different heat element, thereby a plurality of heater elements can be tied, and strengthens heating effect.

Radial pattern muscle shape projection and connection strap muscle thereof that the utility model is directly made by the outer tube-surface of heater element strengthen the heater element external surface area as much as possible, reduce surface loading and temperature, can be directly used in the air and heat.And the utility model can be made various moulding attractive in appearance, and the course of work do not need heat conduction wet goods medium, and rapid heat dissipation, cost particularly recovery cost are low, more environmental protection.

Description of drawings

Fig. 1 is existing electric heater cross-sectional structure schematic diagram;

Fig. 2 is a heater element cross section structure schematic diagram of the present utility model;

Fig. 3 is an outer tube cross section structure schematic diagram of the present utility model;

Fig. 4 is an outer tube cross section structure schematic diagram of the present utility model;

Fig. 5 is an outer tube cross section structure schematic diagram of the present utility model;

Fig. 6 is an outer tube cross section structure schematic diagram of the present utility model;

Fig. 7 is an outer tube cross section structure schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Heater element cross section structure schematic diagram of the present utility model comprises heating wire 1, heat-conducting insulation material 2, outer tube 3 compositions as shown in Figure 2, and described outer tube 3 is provided with muscle shape projection 31, is connected with connection strap muscle 32 between the adjacent muscle shape projection 31.

Muscle shape projection 31 of the present utility model can adopt one or more, and every muscle shape projection 31 can be difformity, as linear pattern, as shown in Figure 4; Above the muscle shape projection 31 muscle shape projection can also be set again, as shown in Figure 3; Connection strap muscle 32 can fuse, and forms sleeve-like configuration, and shown in accompanying drawing 6, accompanying drawing 7, the sleeve-like connection strap muscle 32 shown in the accompanying drawing 6 is cylindric, and the sleeve-like connection strap muscle 32 of accompanying drawing 7 is the square tube shape, can be according to the different different structures of needs design; Muscle shape projection 31 of the present utility model or connection strap muscle 32 can be coupled to each other with the outer tube 3 of different electric heaters, make a plurality of electric heaters fuse, and have strengthened heating effect, as shown in Figure 5.

Outer tube 3 of the present utility model and muscle shape projection 31 and connection strap muscle 32 can be selected conductive coefficient and the reasonable aluminium alloy of performance etc., pass through mould, adopt the hot rolling technology of comparative maturity, get final product the outer tube of easy extrusion modling different shape, simultaneously, its surface also can obtain multiple different colours by oxidation and ripe process of surface treatment such as painted.

Muscle shape projection 31 and connection strap muscle 32 thereof by directly make on outer tube 3 surfaces strengthen the electric heater external surface area as far as possible, reduce surface loading and temperature, be directly used in the air and heat, thereby do not need heat conduction wet goods medium, rapid heat dissipation, cost particularly recovery cost is low, more environmental protection.

Claims (9)

1, a kind ofly be directly used in airborne electric heater, it is provided with heater element, and described heater element comprises the high resistant heating wire from the inside to the outside, and heat-conducting insulation material and outer tube is characterized in that the outer wall of described outer tube is provided with radial pattern muscle shape projection.

2, according to claim 1ly be directly used in airborne electric heater, it is characterized in that described radial pattern muscle shape projection can be difformity.

3, according to claim 1 and 2ly be directly used in airborne electric heater, it is characterized in that to be provided with muscle shape projection again above the described radial pattern muscle shape projection.

4, according to claim 1 and 2ly be directly used in airborne electric heater, it is characterized in that to pass through the cross-over connection of bar muscle between the different radial pattern muscle shape projectioies.

5, according to claim 3ly be directly used in airborne electric heater, it is characterized in that to pass through the cross-over connection of bar muscle between the different radial pattern muscle shape projectioies.

6, according to claim 4ly be directly used in airborne electric heater, it is characterized in that described electric heater can include two or more heater elements.

7, according to claim 5ly be directly used in airborne electric heater, it is characterized in that described electric heater can include two or more heater elements.

8, according to claim 6ly be directly used in airborne electric heater, it is characterized in that the bar muscle between described radial pattern muscle shape projection or muscle shape projection can connect the outer tube of different heat element.

9, according to claim 7ly be directly used in airborne electric heater, it is characterized in that the bar muscle between described radial pattern muscle shape projection or muscle shape projection can connect the outer tube of different heat element.

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