CN2372619Y

CN2372619Y - Heating stove

Info

Publication number: CN2372619Y
Application number: CN 98250337
Authority: CN
Inventors: 赵祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-24
Filing date: 1998-12-24
Publication date: 2000-04-05
Anticipated expiration: 2008-12-24

Abstract

The utility model relates to a heating drying furnace, which is designed in order to change the problems of low heat-exchange rate and high use cost of the existing heating furnace. The utility model comprises a furnace body, a base plate, a burning stool and a flue, and the middle upper part of a hearth is provided with a horizontal row of heating pipes. The upper end of the furnace body is provided with a moderate temperature heater which is composed of a vertical sleeve pipe, and the flue of the upper part of the moderate temperature heater is bent downwards. A fluid pipeline is sheathed on the flue, and the fluid pipeline and the moderate temperature heater are communicated with the horizontal row of heating pipes. The furnace realizes the sufficient heating with high efficiency of the fluid, and the heat exchange efficiency is enhanced. The energy source is saved, and the running cost is reduced.

Description

Heating furnace

The utility model relates to a kind of combustion apparatus, specifically a kind of heating and drying furnace.

Heating and drying furnace is that many industries are used to dry, a kind of fluid heater of baking or thermal finalization.Drinking water boiler sample vertical structure commonly at present, promptly heating furnace includes body of heater, base, burner, heat exchanger and flue, and heat exchanger is positioned at the burner hearth middle and upper part of body of heater.Heat exchanger roughly has three kinds of structures: first kind of heat exchanger adopts the steel pipe vertical direction to arrange, and fiery cigarette flows through in managing, and pipe internal surface absorbs heat, and fluid is given in conduction.Second kind of heat exchanger adopts disc structure, utilizes the disk outer surface to absorb heat, disk inner surface distribute heat, and this structure is under the condition of same fluid cross section, and endotherm area is less.The third heat exchanger adopts the helix tube type structure, and promptly middle is fire trough, and heat-exchange tube rises around the fire trough spiral on every side.This heat-exchanger surface is long-pending relatively also little.It is that rate of heat exchange is low that there is common shortcoming in the heat exchanger of these three kinds of forms, does not make full use of thermal source, shows under the same traffic condition, fail to make the heat-exchanging part surface area to increase, do not make full use of flue residue heat yet, thereby waste energy, the use cost height.The heat exchanger material mostly is steel pipe in addition, and service life is not high.

The purpose of this utility model just provides a kind of rate of heat exchange height, and the fluid heating furnace of long service life to raise the efficiency, is saved the energy, reduces use cost.

The utility model is achieved in that heating furnace still includes body of heater, base, burner and flue etc., burner hearth middle and upper part in body of heater is provided with the horizontally-arranged heating tube, the body of heater upper end is provided with the middle temperature heater of being made up of vertical annulus, in the top of warm heater connect flue, flue is under the body of heater side sway, be socketed with fluid line on the flue, fluid line is connected with middle temperature heater and horizontally-arranged heating tube.The utility model is according to heat exchange principle, heat exchange is divided into three zones in heating furnace.The first area is the flue preheating zone, adopts sleeve preheating, promptly utilizes sleeve pipe that fluid and flue gas are driven in the wrong direction, and heats for the first time with the fume afterheat convection cell.Second area is the middle temperature thermal treatment zone, utilizes the inferior showing tremendous enthusiasm cigarette of roof of the furnace, in middle temperature heater the fluid through preheating is carried out post bake, with further raising fluid temperature (F.T.).The 3rd zone is the high temperature thermal treatment zone, promptly in the burner hearth high-temperature region horizontally-arranged heating tube is carried out roasting, comes out of the stove when making the tube fluid temperature reach the highest, to realize purposes such as oven dry, baking.Flue outlet place at this heating furnace connects the outside air inducing of air-introduced machine, the import department of fluid line connects air blast or fluid pump, cold fluid is sent to preheating zone, the middle temperature thermal treatment zone and the high temperature thermal treatment zone, so just can realize the counter motion and the preliminary preheating of preheating zone fluid and heat energy stream, and make fluid, thereby realized high efficiency heat exchange through low temperature, three heating in middle gentle high-temperature region.

The utility model has changed over the heat exchange zone of three different structures with the single heat converter structure of original heating furnace, has realized the fully efficient heating of fluid, can improve the heat exchange efficiency of heating furnace thus, saves the energy, reduces operating cost.The horizontally-arranged heating tube can be made with cast iron materials, and greatly improve than steel pipe service life, and has also reduced the manufacturing cost of heating tube.

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

Fig. 1 is a structural representation of the present utility model.

Fig. 2 to Fig. 7 is the cross-sectional view of several different implementations of horizontally-arranged heating tube.

As shown in Figure 1, this heating furnace is made up of several parts such as body of heater, base 16, burner 15, heat exchanger and flues 4.Body of heater is made up of furnace body outer wall 1, heat-insulation layer 2 and inboard wall of furnace body 11.Heat exchanger is divided into three parts, and first is the horizontally-arranged heating tube 12 that the burner hearth middle and upper part in the body of heater is provided with, and second portion is the middle temperature heater of being made up of vertical annulus that the body of heater upper end is provided with, and third part is the fluid line 6 that suit on the flue 4 that stoops.

Horizontally-arranged heating tube 12 has the 2-6 layer, crosses and can not make full use of burner hearth high temperature at least, crosses to increase fluid resistance and operation power at most, so with 3 or 4 layers of optimum.The

diversion chamber

3,5,10 that is provided with on the end of every layer of heating tube and the body of heater is connected.Outside undermost heating tube one end has pipe joint 13 pass-out bodies of heater, high temperature fluid is outputed to the use unit.Each layer horizontally-arranged heating tube 12 is for being staggered, so that each layer can both fully absorb heat.The cross section of horizontally-arranged heating tube 12 (as Fig. 2-shown in Figure 7) can be circular or square.Also be cast with annular heat absorption fin 12a in the heating tube outside.The heat absorption fin also can be a geometry such as circular or square.Also be cast with axial interior conducting strip 12b in heating tube inside.Interior conducting strip is symmetrically distributed in tube wall.Can be several upright sheets that do not join, also can join, heating tube is separated into several thinner pipes in the center of heating tube 12.The effective area that has increased heat exchange that is provided with of these absorb heat fins and interior conducting strips increases substantially heat exchange efficiency.

The middle temperature heater of body of heater upper end is to connect the group pipe 8 that connects up and down between two connecting plates, and upper junction plate and walling of flue join, and lower connecting plate and the suitable for reading of inboard wall of furnace body 11 are joined.Bassoon 9 is enclosed within outside the group pipe 8, and its upper end connects fluid line 6, and it is termination inboard wall of furnace body 11 down, and communicates with diversion chamber 5.

Flue 4 is arcuation on the top of middle temperature heater and stoops, and its end opening joins with air-introduced machine with convenient near the body of heater bottom.The outside of the fluid line 6 of socket on flue is surrounded by heat-insulation layer and overcoat 7, fluid line be horizontal import bottom, can join with air blast.

Also be provided with base station 17 at base of furnace body 16 and burner 15 bottoms, constitute the slagging-off air inlet.This heating furnace can use various fuel such as coal, oil, gas or bavin by burner 15 in the combustion chamber 14 internal combustion, thermal-flame carries out the high temperature heating to the horizontally-arranged heating tube, group pipe 8 during waste heat and flue gas enter in the warm heater, the fluid of heating from flowing through between the slit of bassoon 9 and group pipe 8.After-heat and flue dust carry out preheating by flue to the fluid that just enters from the horizontal import of fluid line 6.At last, flue dust is discharged by air-introduced machine and chimney.

Claims

1, a kind of fluid heating furnace, include body of heater, base (16), burner (15) and flue (4), it is characterized in that the burner hearth middle and upper part in body of heater is provided with horizontally-arranged heating tube (12), the body of heater upper end is provided with the middle temperature heater of being made up of vertical annulus, in warm heater top connect flue (4), flue (4) is socketed with fluid line (6) on the flue under the body of heater side sway, fluid line is connected with middle temperature heater and horizontally-arranged heating tube.

2, fluid heating furnace according to claim 1, it is characterized in that horizontally-arranged heating tube (12) has the 2-6 layer, the diversion chamber (3,5,10) that is provided with on the end of every layer of heating tube and the body of heater is connected, outside undermost heating tube one end has pipe joint (13) pass-out body of heater.

3, fluid heating furnace according to claim 2 is characterized in that each layer horizontally-arranged heating tube (12) is for being staggered.

4, fluid heating furnace according to claim 1 and 2, the cross section that it is characterized in that horizontally-arranged heating tube (12) are for circular or square, and there is annular heat absorption fin (12a) the heating tube outside, conducting strip (12b) in heating tube inside has axially.

5, fluid heating furnace according to claim 4 is characterized in that interior conducting strip (12b) joins in the center of heating tube (12).

6, fluid heating furnace according to claim 2, it is characterized in that warm heater is to connect the group pipe (8) that connects up and down between two connecting plates, upper junction plate and walling of flue join, suitable for reading the joining of lower connecting plate and inboard wall of furnace body (11), bassoon (9) is enclosed within outside the group pipe (8), its upper end connects fluid conduit systems (6), and it is termination inboard wall of furnace body (11) down, and communicates with diversion chamber (5).

7, fluid heating furnace according to claim 1 is characterized in that fluid line (6) outside is surrounded by heat-insulation layer and overcoat (7), fluid line (6) be horizontal import bottom.