CN2140474Y

CN2140474Y - Heater using chimney waste heat

Info

Publication number: CN2140474Y
Application number: CN 92242847
Authority: CN
Inventors: 马力
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-25
Filing date: 1992-12-25
Publication date: 1993-08-18
Anticipated expiration: 2002-12-25

Abstract

The utility model discloses a heat exchanger using flue residual heat, belonging to the improvement of a heat exchanger structure for the flue residual heat, comprising a smoke pipe and mainly characterized in grooves arranged on the wall of the smoke pipe. The utility model can not deposit ash or dust on the pipe wall easily, with the advantages of high heat efficiency, etc.

Description

Heater using chimney waste heat

The utility model relates to the improvement of flue residue heat heat exchanger structure.

The afterheat heat exchanger of flue is that the waste heat in the flue is added hot fluid, makes used heat change available energy into, can save a large amount of energy.But the tube wall of present flue residue heat heat exchanger is straight wall pipe, and therefore following shortcoming is arranged:

1. easily dust stratification, incrustation on tube wall:

The flue dust of discharging in the pipeline, carbon black, greasy dirt etc. are easy to hang to be floated on the surface of tube wall, forms dirt, not only makes flue obstructed, has also influenced the heat exchange effect;

2. heat exchange weak effect:

Because existing tube wall is straight, heat exchange area is less, and tube wall is thicker, therefore, has also influenced heat exchange efficiency.

The purpose of this utility model is exactly at the problems referred to above, provides a kind of contamination dirt that is difficult for, the flue residue heat heat exchanger that heat exchange efficiency is high.

The purpose of this utility model is achieved in that tube wall is provided with groove exactly, realizes above-mentioned purpose of the present utility model with this.

Major advantage of the present utility model:

1. be difficult for dust stratification, incrustation on tube wall:

The smoke pipe wall surface has groove, just makes smoke pipe have certain flexibility; Owing to expand with heat and contract with cold, the groove of smoke pipe also can produce the variation of trace, thereby make ash or dirt be difficult to be attached on the inside and outside wall of smoke pipe, reach self-cleaning effect.

2. heat transfer efficiency height:

Because tube wall has groove the inside and outside contact area of smoke pipe is strengthened, increased the heat exchange effect, the thermal efficiency of comparable existing heat exchanger improves 8-20%.

Fig. 1 is the structural representation of gas-gas-heat exchanger of the present utility model;

Fig. 2 is the structural representation of liquid suction heat exchanger of the present utility model;

Fig. 3, Fig. 4 are the local enlarged diagrams of Fig. 1, Fig. 2.

Below in conjunction with accompanying drawing concrete structure of the present utility model is further described:

The utility model comprises smoke pipe 1, smoke pipe 1 top is respectively air inlet 3, exhaust outlet 2, the bottom of smoke pipe 1 is a header 5, (be meant gas-gas-heat exchanger, see Fig. 1), or upward be exhanst gas outlet 10, be down gas approach 7, the side is respectively inlet 11, the liquid outlet 8 of liquid, and heat exchanger is outward a heat-insulation layer 9, (be meant liquid suction heat exchanger, see Fig. 2).Smoke pipe 1 wall is provided with groove 12.

Smoke pipe 1 also can apparatus fluted 12 bellows replace, the tube wall of bellows is thin (being generally 0.5-1.5mm), and the wall thickness of common heat exchanger is not less than 3mm, therefore, can help to improve the heat exchange effect with bellows.Adopt stainless steel material to make smoke pipe, can effectively prevent the generation of tube wall dewing corrosion phenomenon.The cross section of groove 12 can be (see figure 4) semicircular (see figure 3) or arc or trapezoidal.

Claims

1, the flue residue heat heat exchanger comprises smoke pipe 1, it is characterized in that having groove 12 on smoke pipe 1 wall.

2, flue residue heat heat exchanger according to claim 1, the cross section that it is characterized in that groove 12 is semicircular.

3, flue residue heat heat exchanger according to claim 1, the cross section that it is characterized in that groove 12 is trapezoidal.