CN202092154U

CN202092154U - Smoke return type boiler hearth structure

Info

Publication number: CN202092154U
Application number: CN2011201014111U
Authority: CN
Inventors: 张富春; 朱金瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-08
Filing date: 2011-04-08
Publication date: 2011-12-28
Anticipated expiration: 2021-04-08

Abstract

The utility model discloses a smoke return type boiler hearth structure, which includes a hearth wall comprising an inner wall and an outer wall, wherein a smoke return flue is formed between the inner wall and the outer wall, vertical trend cold water pipes are arranged between the inner wall and the outer wall, the height of the inner wall is smaller than that of the outer wall, and clearances are reserved between the upper part of the inner wall and the hearth top surface, and between the lower part of the inner wall and the hearth bottom surface, respectively, so that upper and lower smoke inlets communicated with the smoke return flue are formed. The structure fully utilizes the boiler body structure, enables the manufacture to be relatively simple, and lowers the manufacturing cost.

Description

A kind of back-smoke type boiler furnace structure

Technical field

The utility model relates to a kind of boiler, particularly a kind of back-smoke type boiler furnace structure.

Background technology

At present, emerged boiler miscellaneous on the market, structure is different.In order to make full use of boiler smoke heat energy, the flue in the boiler has all been done circuitous prolongation processing, and causing existing miniature boiler to return the cigarette flue needs to make separately, makes complexity, and it is big not only to take up room, and has increased the volume of boiler.

Summary of the invention

The purpose of this utility model is to provide a kind of back-smoke type boiler furnace structure, and it can make full use of furnace space, and simplified structure reduces boiler volume, reduces the boiler manufacturing cost.

The purpose of this utility model is to realize like this, a kind of back-smoke type boiler furnace structure, comprise hearth wall, hearth wall is made of inwall and outer wall, formation is returned the cigarette flue between the inside and outside wall, is being provided with to be the cold water pipe that moves towards layout up and down between inwall and outer wall, and the height of inwall is less than the height of outer wall, the gap is left respectively and between burner hearth end face and the burner hearth bottom surface in the top of inwall and bottom, constitute with return that the cigarette flue is connected upper and lowerly advance mouth.

The utility model will return the cigarette flue and burner hearth integrates, and make full use of furnace space, both prolong the heat absorption length of flue gas, improve heat absorption efficiency, reduce boiler volume again, make that making is simple relatively, reduce the manufacturing cost of boiler.

Description of drawings

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

Fig. 1 is a main TV structure schematic diagram of the present utility model;

Fig. 2 is a plan structure schematic diagram of the present utility model.

The specific embodiment

A kind of back-smoke type boiler furnace structure, as shown in Figure 1 and Figure 2, comprise hearth wall, hearth wall is made of inwall 4 and outer wall 3, formation is returned cigarette flue 6 between inwall 4, the outer wall 3, is being provided with to be the cold water pipe 2 that moves towards layout up and down between inwall 4 and outer wall 3, and the height of inwall 4 is less than the height of outer wall 3, the gap is left respectively and between burner hearth end face and the burner hearth bottom surface in the top of inwall 4 and bottom, constitute with return that cigarette flue 6 is connected upper and lowerly

advance mouth

1,5.

Said hearth wall is cylindrical prismatic conical or square.

Said inwall 4 and outer wall 3 all link to each other with said cold water pipe 2 tube walls.

The utility model has made full use of furnace space, has reduced boiler volume, makes that making is simple relatively, has reduced manufacturing cost.

Claims

1. back-smoke type boiler furnace structure, comprise hearth wall, it is characterized in that: hearth wall is made of inwall and outer wall, constitute between the inside and outside wall and return the cigarette flue, between inwall and outer wall, be provided with and be the cold water pipe that moves towards layout up and down, the height of inwall is less than the height of outer wall, and the gap is left respectively and between burner hearth end face and the burner hearth bottom surface in the top of inwall and bottom, constitute with return that the cigarette flue is connected upper and lowerly advance mouth.

2. back-smoke type boiler furnace structure according to claim 1 is characterized in that: said hearth wall is cylindrical prismatic or conical.

3. back-smoke type boiler furnace structure according to claim 1 is characterized in that: said inwall and outer wall all link to each other with said cold water pipe tube wall.