CN212183756U - Fin heater - Google Patents

Abstract

The utility model belongs to a tubular heater, in particular to a fin heater. The heating device comprises a U-shaped heating pipe, wherein a resistance wire is arranged in the U-shaped heating pipe, and the U-shaped heating pipe is welded with a flange and connected with a junction box; the U-shaped heating pipe is provided with a plurality of square fins, the main bodies of the square fins are of rectangular plate-shaped structures, two flanging holes are symmetrically formed in the main bodies of the square fins, the inner edges of the flanging holes are claw-shaped structures extending towards the direction vertical to the plate surface, and arc-shaped openings are formed between every two adjacent claw-shaped structures; two straight pipe sections of the U-shaped heating pipe are respectively embedded in the flanging holes, and the resistance wires of the bent pipe sections in the U-shaped heating pipe are designed by wire drawing. The utility model discloses well square fin makes the heat radiating area of product bigger, and special claw structural design realizes elasticity self-align, and the heating pipe is in long-term use, not being heated expanding and contracting's influence, and the fin is not become loose, does not produce the abnormal sound, improves the radiating effect. The resistance wire in the heater adopts the wire drawing design, and the sectional heating mode makes the life of product longer.

Description

Fin heater

Technical Field

The utility model belongs to a tubular heater, in particular to a fin heater.

Background

In the conventional fin heater, the fins are wound on the heating tube by a spiral shape. In the working process of the heater, due to the influence of expansion with heat and contraction with cold, after the heater is used for a period of time, the connection and fixation of the fins and the heating pipe can be loosened. Under the action of flowing air, the fins collide with the heating pipe to form abnormal sound. Meanwhile, the heat transfer capability of the heating pipe to the fins is reduced due to the looseness of the fins, so that the heat transfer efficiency is reduced, and the heat dissipation effect is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome not enough among the prior art, provide a fin heater.

In order to solve the technical problem, the utility model discloses a solution is:

the fin heater comprises a U-shaped heating pipe, wherein a resistance wire is arranged in the U-shaped heating pipe, and the U-shaped heating pipe is welded with a flange and connected with a junction box; the U-shaped heating pipe is provided with a plurality of square fins, the main bodies of the square fins are of rectangular plate-shaped structures, two flanging holes are symmetrically formed in the main bodies of the square fins, the inner edges of the flanging holes are claw-shaped structures extending towards the direction vertical to the plate surface, and arc-shaped openings are formed between every two adjacent claw-shaped structures; two straight pipe sections of the U-shaped heating pipe are respectively embedded in the flanging holes, and the resistance wires of the bent pipe sections in the U-shaped heating pipe are designed by wire drawing.

As an improvement, the junction box is filled with epoxy resin.

As an improvement, a temperature controller is also arranged on the heater.

As an improvement, the heating pipe and the square fin are connected through nickel-based brazing.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses well square fin makes the heat radiating area of product bigger, and special claw structural design realizes elasticity self-align to through the technology of brazing, make the heating pipe in long-term use, not receive the influence of expend with heat and contract with cold, the fin is not become loose, does not produce abnormal sound, improves the radiating effect. The resistance wire in the heater adopts the wire drawing design, and the sectional heating mode makes the life of product longer. Meanwhile, due to the installation of the temperature controller, the use temperature of the product can be accurately controlled, the service life of the product is prolonged, the safety is ensured, and the energy consumption is saved. The junction box of the heater is filled with epoxy resin, so that the product is suitable for a high-humidity environment, good electrical performance can be ensured, and the safety performance of the product is improved.

Drawings

Fig. 1 is a front view of a square fin of the present invention.

Fig. 2 is an attached view of the square fin of the present invention.

Fig. 3 is a schematic structural diagram of the internal resistance wire of the present invention.

Fig. 4 is a front view of the present invention.

Fig. 5 is a rear view of the present invention.

Reference numerals: 1-heating a tube; 2-square fins; 3-a junction box; 4-glan; 5-a wire; 6-auxiliary flange; 7-temperature controller.

Detailed Description

Example 1

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 4-5, a fin heater comprises a U-shaped heating pipe 1, a resistance wire is arranged in the U-shaped heating pipe 1, the end of the U-shaped heating pipe 1 is connected with a junction box 3 through a flange, and the junction box 3 is filled with epoxy resin. The outer part of the junction box 3 is provided with a Glan 4, and the heating wire is led out of the junction box 3 through the Glan 4 and is connected with a lead 5. (the end of the heating tube 1 is led out of a lead wire which is led out through a junction box 3 and a Glan 4). The auxiliary flange 6 is connected with the junction box 3, and the temperature controller 7 is arranged on the auxiliary flange 6, so that the use temperature of a product can be accurately controlled, the product is protected, and the energy-saving effect is achieved. The U-shaped heating pipe 1 is provided with the square fins 2, the heating pipe 1 and the square fins 2 are connected through nickel-based brazing, and due to the design of the connecting structure, the fins are not affected by expansion and contraction of heat and cannot become loose in the working process of the heater, so that abnormal sound is avoided, good heat transfer efficiency can be guaranteed, and the heat dissipation effect is good.

As shown in fig. 1, the main body of the square fin 2 is a rectangular plate-shaped structure, two flanging holes are symmetrically formed in the main body of the square fin 2, the inner edges of the flanging holes are claw-shaped structures extending in the direction perpendicular to the plate surface, the claw-shaped structures can extend towards the same side as shown in fig. 2 or extend towards different sides, an arc-shaped gap is formed between adjacent claw-shaped structures, and two straight tube sections of the U-shaped heating tube 1 are respectively embedded in the flanging holes. The inner edge of the flanging hole forms a special claw structure, so that the connection between the fin and the heating pipe 1 has certain elasticity.

As shown in fig. 3, the resistance wire of the inner bend section of the U-shaped heating tube 1 is designed by wire drawing, the working temperature of the fin area of the heater is about 90 ℃, and in order to avoid the phenomenon that the service life of the product is affected by overhigh temperature of the 180-degree bend area, the heating wire in the 180-degree bend area is designed by wire drawing, so that the working temperature of the area is about 70 ℃. And a sectional heating mode is adopted, so that the service life of the product is prolonged.

Finally, it should be noted that the above-mentioned embodiments illustrate only specific embodiments of the invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims (4)

1. A fin heater comprises a U-shaped heating pipe, wherein a resistance wire is arranged in the U-shaped heating pipe, and the U-shaped heating pipe is welded with a flange and connected with a junction box; the method is characterized in that: the U-shaped heating pipe is provided with a plurality of square fins, the main bodies of the square fins are of rectangular plate-shaped structures, two flanging holes are symmetrically formed in the main bodies of the square fins, the inner edges of the flanging holes are claw-shaped structures extending towards the direction vertical to the plate surface, and arc-shaped openings are formed between the adjacent claw-shaped structures; two straight pipe sections of the U-shaped heating pipe are respectively embedded in the flanging holes, and resistance wires of the bent pipe sections in the U-shaped heating pipe are designed in a wire drawing mode.

2. A fin heater according to claim 1, wherein: and epoxy resin is filled in the junction box.

3. A fin heater according to claim 1, wherein: the heater is also provided with a temperature controller.

4. A fin heater according to claim 1, wherein: the heating pipe and the square fin are connected through nickel-based brazing.

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