CN2835884Y - Hot blast heating boiler with biomass briquette fuel - Google Patents

Abstract

The utility model discloses a hot blast heating boiler with biomass briquette fuel, which comprises a boiler body, a hearth, a grate, an air inlet of the lower part of the grate, a filling port of the upper part of the grate, a smoke passage on the upper part of the hearth, and a chimney on the smoke passage, wherein an annular air passage is arranged between the hearth and a boiler wall; the annular air passage is communicated with the smoke passage on the upper part of the hearth. A cold air inlet communicated with the annular air passage is arranged on the boiler wall; the cold air inlet is communicated with an outlet of a blower; a tube array heat exchanger is arranged in the smoke passage. A hot air outlet pipeline is communicated with an open type radiator which is composed of a transverse air inlet tube and a longitudinal tube array; an upper port of each tube of the longitudinal tube array is communicated with an air outlet on the transverse air inlet tube and a lower port is open. The burning performance of the heating boiler is good; the heating efficiency is high. NOx, CO, SO2, etc. in smoke discharged by the boiler are below the environmental protection index; the utility model has better energy saving and environmental protection efficiencies. The manufacturing process of the hot blast boiler is easy; the operation is convenient.

Description

Biomass briquette fuel hot air heating furnace

technical field

The utility model relates to a heating furnace, in particular to a biomass fuel hot air heating furnace.

Background technique

Existing heating stoves all take coal or firewood as fuel, use water as heat transfer medium, and realize heating by the principle of heat exchange through radiators. High energy consumption, heavy pollution, and unsatisfactory heating efficiency.

Utility model content

The purpose of the utility model is to provide a biomass fuel hot air heating furnace with novel structure, complete fuel combustion, high thermal efficiency, and smoke exhaust meeting environmental protection requirements.

The technical scheme of the utility model is: a biomass molding fuel hot air heating furnace, including a furnace body, a furnace, a fire grate, an air inlet at the lower part of the fire grate, a filling port at the upper part of the fire grate, a flue gas channel at the upper part of the furnace and flue gas The chimney on the passage is provided with an annular air passage between the furnace and the furnace wall, and the annular air passage communicates with the flue gas passage on the upper part of the furnace; a cold air inlet connected with the annular air passage is provided on the furnace wall, and the cold air inlet and the blower The outlet is connected, and a tube-and-tube heat exchanger is arranged in the flue gas channel; the hot air outlet pipe is connected with an open radiator, and the open radiator is composed of a horizontal intake pipe and a vertical tube, and the upper part of each tube of the vertical tube is The port communicates with the air outlet on the transverse air intake pipe, and the lower port is open.

Spiral ribs are arranged in the annular air channel.

Advantage of the utility model:

This kind of stove uses hot air for heating instead of medium water to heat the indoor air. The biomass molding fuel hot air heating furnace is mainly composed of a furnace, a grate, a radiation and convective heat exchange surface, a chimney, a radiator, a cold air inlet, and a hot air outlet. , filling port, two ash outlets, etc., the heating furnace has good combustion performance and high heating efficiency; the _NOx , CO, SO2 in the exhaust smoke of the furnace are lower than the environmental protection index, and have good energy saving and environmental protection benefits; The hot blast stove has a simple manufacturing process and is easy to operate.

Description of drawings

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

Figure 2 is a schematic diagram of the structure of an open radiator.

Detailed ways

The structure of the utility model is shown in Figure 1 and Figure 2: it includes a furnace body 17, a furnace 5, an insulation layer 4, a fire grate 2, an air inlet 1 at the lower part of the fire grate, a filling port 16 at the upper part of the fire grate and flue gas at the upper part of the furnace The channel 8 and the chimney 11 on the flue gas channel are provided with an annular air channel 3 between the furnace and the furnace wall. 6. The furnace wall is provided with a cold air inlet 13 communicating with the annular air passage, the cold air inlet 13 is connected with the outlet of the blower 14, and a tube-and-tube heat exchanger 10 is arranged in the flue gas passage; the hot air passage passes through the pipe and the open Type radiator 12 Unicom, the open radiator is made up of horizontal air intake pipe 18 and vertical column tube 19, the upper port of each tube of vertical column tube 19 is communicated with the air outlet on the horizontal air intake pipe 18, and the lower port is an open air outlet 20.

Working principle of hot air heating furnace:

After the fuel was ignited successfully on the fire grate 2, the molding block entered the furnace 5 with the red-hot bottom material from the feed port 16, and according to the combustion characteristics of the biomass that was easy to catch fire, it would burn in a moment. The blower 14 at the cold air outlet 13 blows the indoor cold air into the furnace interlayer 3, and the furnace interlayer 3 has ribs 6 around the periphery of the furnace, and the air is heated around the furnace while being guided by the ribs to flow upward. This prevents the short circuit of the air in the interlayer, and makes the air stay in the interlayer for more time. The heated air passes through the furnace interlayer 3, enters the tube radiator 10 on the upper part of the furnace, washes the tube radiator and flows to the hot air outlet 7, enters the hot air pipe and enters the indoor open radiator 12, and the hot air 15 flows from the open The small cavities in the lower part of the type radiator are scattered into the room, and the temperature and speed are greatly reduced at this time. The direction of the high-temperature flue gas is: it comes out of the furnace 5 and directly enters the tube radiator 8 on the upper part of the furnace to heat the air flowing through the periphery, and then enters the chimney 11 to be discharged to the outside.

Claims (2)

1, a kind of biomass molding fuel hot-blast stove, comprise the air inlet of body of heater, burner hearth, fire grate, fire grate bottom, feeding port and the exhaust gases passes of upper furnace and the chimney on the exhaust gases passes on fire grate top, it is characterized in that: between burner hearth and furnace wall, be provided with annular air channel, the exhaust gases passes UNICOM of this annular air channel and upper furnace; Be provided with the cold wind import with annular air channel UNICOM on the furnace wall, cold wind import and blower export UNICOM are provided with tubular heat exchanger in exhaust gases passes; Hot air outlet pipeline and open radiator UNICOM, open radiator by horizontal air inlet pipe and vertically tubulation forms, the vertical gas outlet UNICOM on the upper port of each pipe of tubulation and the horizontal air inlet pipe, lower port is open.

2, biomass molding fuel hot-blast stove according to claim 1 is characterized in that: be provided with the screw type fin in annular air channel.

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