CN201237350Y - High-efficiency energy-saving hot-air furnace - Google Patents

Abstract

The utility model provides a high efficient and energy-saving hot air furnace, an exhaust pipe is arranged at the periphery of an inner shell of a furnace body, an air inlet and an air outlet are connected to from the secondary air inlet, an air inlet deflector is arranged at the inner wall of a fire tube of the hot air furnace; a chimney is the sandwich low chimney, an exhaust fan is arranged therein, and the chimney is downwards communicated with a drainage ditch or a water tank; and an adjustable air door is arranged above a furnace door. An air duct at the periphery of the furnace body of the high efficient and energy-saving hot air furnace can generate dry hot air, and a main air duct uses a secondary air inlet device to carry out the spiral air inlet, thereby expanding the thermal conduction area of the fire tube, changing the direction of burning, enhancing the combustion and realizing the full combustion; the chimney is the sandwich low chimney which can lead the hot air to be more energy-efficient by heat exchange cycle. The device can not only achieve the purpose of generating the high temperature hot air, but also be characterized by integration of the high temperature dry hot air.

Description

Energy efficient hot air furnace

Technical field

The utility model relates to a kind of hot-air stove device, especially a kind of energy efficient hot air furnace that is used for Tea Processing.

Background technology

The hot-air stove thermal efficiency of China's tea green-keeping processing equipment commonly used only is 30% one 50%, and the thermal efficiency of most of hot-air stoves is about 40%.The reason that the hot-air stove thermal efficiency is low mainly contain following some: 1. cooking range structure is unreasonable, and burner hearth is big, firepower disperses, and the free carbon particle that fuel combustion produces produces black smoke because of imperfect combustion.Exhaust gas discharged does not reach requirement, blackness and flue dust severe overweight, and exhaust gas temperature is too high.2. the heat preservation and insulation of body and stove body is owed, Heat Conduction Material itself or cause heat conductivility poor because reason such as chemical change has taken place, and radiation loss is serious.3. directly to influence the heat transmission effect poor for the long-term dust stratification of furnace outer wall.

The supporting hot-air stove of tealeaves develops to energy-saving hot blast furnace from the original brick stove all-metal of horizontal fire tube hot-blast stove at present, and very big variation has taken place its quality.Along with the raising of environmental protection consciousness, the coal-fired hot-blast stove problem of environment pollution caused is more and more drawn attention simultaneously.

The utility model content

The purpose of this utility model is exactly a kind of ideal scheme that proposes for the deficiency that solves above-mentioned all kinds of problems, and it can enlarge the fire tube conduction heating surface, change the direction of making a fire, and spiral secondary air makes sufficient combustion, temperature stabilization, energy savings.

Technical solution adopted in the utility model is: body of heater inner casing outer periphery blast pipe, air inlet link to each other with air outlet and form secondary air, at hot-blast stove fire tube inwall the air intake guide plate are set; Chimney is the interlayer short smokestack, in establish air exhauster, logical gutter or pond downwards; But air register is established in the fire door top.

The air channel of this energy efficient hot air furnace body of heater periphery can produce hot dry wind, and main air duct is with the secondary air device.Spiral air intake enlarges the fire tube conduction heating surface, changes the direction of making a fire, and overheavy firing makes sufficient combustion, and smoke evacuation chimney is the interlayer short smokestack, makes hot gas more energy-conservation through the heat exchange circulation.This device can reach the purpose that produces high-temperature hot-air, also has the characteristics of collection high temperature hot dry wind monommechanization.

Description of drawings

Fig. 1 is the utility model schematic appearance.

Fig. 2 is Fig. 1 cutaway view.

Fig. 3 is a chimney emission pipe schematic diagram.

Fig. 4 is a chimney emission pipe side schematic view.

The specific embodiment

But this energy efficient hot air furnace is that capacity control valve 15, draining sealing gland mouth net 16, backheat gas control valve 17 and the air exhauster 18 etc. of exhaust opening 13 and chimney are partly formed by shell 5, middle level shell 14, inner casing 6, combustion chamber 11, cold wind air inlet 1, air outlet 2, exhaust duct 3, air intake guide plate 9, thermal insulation layer 4,12, charging aperture 7, discharging opening 8 air registers 10, the waste discharge gas port of body of heater.

One side of body of heater is provided with cold wind air inlet 1, and the sidepiece of body of heater is provided with combustion gas charging aperture 7, air outlet 2, exhaust duct 3; Another side is provided with charging aperture 7, discharging opening 8, cooking stove adopts special many vents circle combustion chamber 11, utilize the method for the exhaust duct 3 generation hot dry winds of body of heater periphery, the heat exchanger pattern is jet flow (not expression among the figure), the preheating air intake, air inlet 1 links to each other with air outlet 2, forms secondary air, making the direct air intake of burner hearth is spiral air intake, make its air intake power powerful, overheavy firing, burning are thoroughly, shorten invalid burning time, furnace temperature rises easily, and sufficient combustion and do not produce black smoke improves fire box temperature greatly, temperature stabilization, it is little to fluctuate, capable of saving fuel more than 30%.In addition, directly smoke evacuation makes to be the interlayer short smokestack into to the chimney of smoke evacuation to the high-altitude by original straight chimney stack, and chimney internal layer smoke evacuation tube is rolled into by sheet metal, and is welded with fin 19 at outer wall, can control exhaust smoke level; Be provided with the capacity control valve 15 and the backheat gas control valve 17 of band draining sealing gland mouth net 16 on the chimney simultaneously, air inlet 1 under the grate blows into cold air, flow through chimney internal layer, skin carries out heat exchange, a large amount of heat energy that smoke evacuation is carried secretly have been absorbed, under the swabbing action of air exhauster, hot gas makes the heat energy circulation more energy-conservation after heat exchange; Flue gas adopts and establish smoke suction machine in chimney is air exhauster 18, is convenient to discharging, and smoke evacuation makes to be gutter or pond smoke evacuation downwards into by smoke evacuation on the high-altitude, the flue gas that gives off can pass through water film dedusting, contaminated air does not have energy-efficient and effect environmental protection, and is energy-conservation more than 20～30%.By dwindling the fire door area, and above the fire door of hot-blast stove, offer movable window can air register 10, to impel full combustion of fuel, the waste of fuel rate is reduced; In addition, air intake guide plate 9 is set,, changes the direction of making a fire so that enlarge the fire tube conduction heating surface at the hot-blast stove inwall, effectively energy-conservation and saved fuel.

This energy-conservation hot-blast stove cooking stove heat zone: interior employing high temperature furnace plate, be seat clay outward; The insulation layer of furnace wall adopts light foam refractory brick and alumina silicate fiber felt materials such as (asbestos); Fuel is coal, coke, bavin; Adopt normal burning, oxygen supply is abundant, and burning thoroughly can be mixed and burn that the bavin head is broken, joint branch etc.Heat exchange is scientific and reasonable, not influenced by furnace wall, the cloud of dust, and temperature, air quantity is adjustable, and the output hot blast temperature can be up to more than 350 ℃, and temperature adopts microcomputerized control, can regulate setting as requested.

Claims (1)

1, a kind of energy efficient hot air furnace, comprise body of heater with dissection, chimney, inlet and outlet, it is characterized in that: body of heater inner casing (6) outer periphery blast pipe (3), air inlet (1) link to each other with air outlet (2) and form secondary air, at hot-blast stove fire tube inwall air intake guide plate (9) are set; Chimney is the interlayer short smokestack, in establish air exhauster, logical gutter or pond (18) downwards; But air register (10) is established in the fire door top.

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