CN201259303Y - Coal briquette energy-conserving environment protection water heater - Google Patents

Abstract

The utility model relates to an energy-saving and environment-friendly hot water heater with shaped coal, which belongs to the technical field of heating. It is used to boil water in small-scale heating such as small and medium-sized baths and households, and overcomes the shortcomings of slow heating speed, low heat conversion efficiency and high temperature of flue gas discharged into the atmosphere in the boilers used in such places in the past. It consists of a tunnel-shaped combustion chamber, an ash collection and air supply chamber under the combustion chamber, and a flue gas return multi-stage preheater above the combustion chamber. The front end of the combustion chamber has molded coal and a furnace door bracket, and the molded coal advances the leading screw on the bracket. There is a slag door closed by its own weight at the rear end of the combustion chamber. There is a grate track between the combustion chamber and the ash collection and air supply chamber. The flue gas return multi-stage preheater consists of a smoke exhaust pipe group, a water tank surrounding the smoke exhaust pipe group and flue gas passages at both ends of the smoke exhaust pipe. There are segmented partitions in the water tank and flue gas channel. The beneficial effects of the utility model are that the combustion chamber has a large space and the water heating speed is fast. The heat exchange area between water and flue gas is large, and the combustion heat utilization efficiency is high. The exhaust gas temperature is low, which is conducive to environmental protection. The furnace body is compact and occupies less space.

Description

A briquette energy-saving and environment-friendly water heater

technical field

The utility model belongs to the technical field of heating, in particular to a boiler that uses briquette as fuel to circulate or continuously discharge hot water.

Background technique

At present, the boilers used to heat hot water in small and medium-sized baths, households and other small-scale heating places mostly adopt the traditional water boiler structure in which the water jacket surrounds the furnace and flue. This kind of water heater has a small furnace space and water Heating rate is slow. The heat exchange area of water and pyrotechnics is small, the thermal efficiency is low, energy is wasted, and the production cost of hot water is high. The temperature of the exhausted flue gas is high, which is not conducive to environmental protection.

Contents of the invention

The purpose of this utility model is to provide an energy-saving and environment-friendly hot water heater with briquette, which is used for heating water in small-scale heating such as small and medium-sized baths and families, and overcomes the slow heating speed and low heat conversion efficiency of boilers used in such places in the past. , The disadvantage of the high temperature of the flue gas discharged into the atmosphere.

The water heater of the utility model is composed of a tunnel-shaped combustion chamber, an ash collection and air supply chamber under the combustion chamber, and a flue gas return multi-stage preheater above the combustion chamber. Among them, there are natural ventilation openings on the sides of the ash collection and air supply chambers. There are water jackets on both sides and the upper end of the combustion chamber, and a molded coal and furnace door panel bracket is arranged at the molded coal entrance of the front end of the combustion chamber, and molded coal is advanced on a screw on the bracket. The front end of the leading screw can be relatively rotated to install the furnace door panel. The slag discharge port at the rear end of the combustion chamber is provided with a slag discharge door whose upper end is hinged on the furnace body and closed by its own weight. There is a smoke exhaust port on the upper side of the front end of the combustion chamber. There are natural ventilation openings on the side of the dust collection and air supply chamber. The grate track between the combustion chamber and the ash collection and air supply chamber. The flue gas return multistage preheater is composed of a smoke exhaust pipe group, a water tank surrounding the smoke exhaust pipe group, and a flue gas channel between the smoke exhaust pipes. There are segmented partitions in the water tank and flue gas channel.

The beneficial effects of the utility model are that the combustion chamber has a large space and the water heating speed is fast. The heat exchange area between water and flue gas is large, and the combustion heat utilization efficiency is high. The temperature of the flue gas to the atmosphere exhaust port is close to the temperature of the water to be heated, and the heat utilization rate is increased by about 30% compared with the existing water heater, and most of the heat contained in the flue gas is utilized. The temperature of the smoke exhausted to the atmosphere is low, which is conducive to environmental protection. The furnace body is compact and occupies less space.

Description of drawings

Fig. 1 is a front sectional view of the utility model.

Fig. 2 is a side sectional view of the utility model.

Detailed ways

Provide embodiments of the present utility model below in conjunction with accompanying drawing.

Referring to Fig. 1, Fig. 2, the lower end of stove is ash collection, air supply chamber, and natural vent 1 is arranged on ash collection, air supply chamber. Above the dust collection and air supply chamber is the combustion chamber. There is a water jacket 2 on and around the upper end of the combustion chamber. The upper part of the combustion chamber has a hot water pipe 3 connecting the water jackets on both sides, and there are refractory material layers 4 on both sides of the lower part. The molded coal entrance of the combustion chamber front end is provided with molded coal and furnace door panel support 5. Briquette advances leading screw 6 on the support. The front end of the leading screw is relatively rotatable and the furnace door panel 7 is installed. The slag discharge port at the rear end of the combustion chamber is provided with a slag discharge door 8 whose upper end is hinged on the furnace body and closed by its own weight. Fire grate guide rail 9 is arranged between combustion chamber and ash collection, air supply chamber. Both sides water jacket communicating pipe 10 is arranged below the fire grate guide rail. The upper end of the combustion chamber is connected with the flue gas to the preheater. The preheater includes a smoke exhaust pipe group 11, a water tank 12 surrounding the smoke exhaust pipe group, and flue gas passages 13 at both ends of the smoke exhaust pipe of the water tank. In the preheater, there is a dividing plate 14 that separates the flue gas passage at one end of the water tank and the briquette inlet into upper and lower sections. The upper side of the front end of the combustion chamber corresponds to the smoke passage of the preheater and has a smoke exhaust port 15 . A chimney 16 is arranged at the upper end of the flue gas channel with a dividing plate. Connect the water inlet pipe 17 at the lower end of the upper preheater. A water pipe 18 is connected to the upper end of the upper stage preheater and the lower end of the lower stage preheater. Connect the water pipe 19 at the lower end of the preheater and the lower end of the combustion chamber. The hot water outlet pipe 20 is terminated on the water jacket of the combustion chamber. An automatic vent valve 21 is installed at the upper end of each preheater, and an insulation layer is attached to the outer wall of the furnace, and a thin steel plate is wrapped outside the insulation layer.

The operation process of the utility model is as follows: push the furnace grate carrying molded coal into the combustion chamber through the lead screw and spread it on the furnace grate track, the molded coal burns, directly heats the water in the water jacket, and the smoke is exhausted through the combustion chamber Port 15 enters the flue gas channel of the preheater, is blocked by the partition plate 14, and flows through the exhaust pipe group of the lower preheater in a concentrated manner. tube group. After flowing out of the exhaust pipe group of the upper preheater, it enters the chimney. The water first passes through the waste heat of the upper preheater, then preheats through the lower preheater, and finally enters the water jacket from the lower end of the combustion chamber and the heating pipe in the combustion chamber to continue heating, and the hot water used is discharged from the water outlet at the upper end of the water jacket.

Claims (1)

1. A briquette-shaped coal energy-saving and environment-friendly water heater is characterized in that it consists of a tunnel-shaped combustion chamber, an ash collection chamber under the combustion chamber, an air supply chamber, and a flue gas return multi-stage preheater above the combustion chamber, wherein the ash collection 1. There are natural ventilation ports on the side of the air supply chamber. There are water jackets on both sides and the upper end of the combustion chamber. The briquette and furnace door bracket are set at the briquette entrance of the front end of the combustion chamber. The furnace door can be rotated relative to the lead screw. The slag discharge port at the rear end of the combustion chamber is provided with a slag discharge door whose upper end is hinged on the furnace body and closed by its own weight. There is a smoke exhaust port on the upper side of the front end of the combustion chamber. There are natural ventilation openings on the side, and there is a furnace track between the combustion chamber and the ash collection and air supply chamber. The flue gas turns back to the multi-stage preheater. There are segmental partitions in the gas channel, water tank and flue gas channel.

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