CN209386538U - Improve the small size hot-water boiler of supply air temperature - Google Patents

Abstract

Improve the small size hot-water boiler of supply air temperature, including furnace body, water tank is arranged at furnace body inside top, there is the furnace tube being connected to water tank on furnace body inside periphery, and there is grate in furnace body inside lower part, terminates pedestal under furnace body, smoke exhaust pipe is terminated on furnace body, the side of furnace body, which is higher than at grate, an air inlet to connect with air supply device, and smoke exhaust pipe connects dust-extraction unit and blower unit, and blower unit runs in chimney.There is shell-and-tube exchanger between smoke exhaust pipe and dust-extraction unit, smoke exhaust pipe connects with the shell side import on heat exchanger, the entrance of dust-extraction unit connects with the shell-side outlet of heat exchanger, the tube-side inlet of heat exchanger is connected with outside atmosphere, the tube side outlet of heat exchanger connects with an interface of threeway, another interface of threeway connects with the entrance of the air supply device, another interface of threeway connects valve, valve is connected to outside atmosphere, has removal of impurities door in the bottom of heat exchanger.Structure is simple, improves supply air temperature, improves boiler thermal efficiency, saves the energy.

Description

Improve the small size hot-water boiler of supply air temperature

Technical field

The utility model relates to a kind of boiler, especially a kind of small size hot-water boiler for improving supply air temperature.

Background technique

Currently, small size hot-water boiler is widely used, structure includes the furnace body that there is insulating layer in outside, on furnace body inside Portion is fixedly connected with water tank by connecting plate, furnace body inside periphery be equipped with multiple equally distributed furnace tubes, furnace tube it is interior Chamber is connected with the inner cavity of water tank, and furnace body inside lower part is equipped with grate, is terminated with pedestal, the row of being terminated on furnace body under furnace body Smoke pipe forms combustion chamber between grate and water tank, the air inlet for being equipped at grate and connecting with air supply device is higher than in the side of furnace body Mouthful, smoke exhaust pipe connects dust-extraction unit and blower unit, and blower unit runs in chimney.In the process of running, air supply device is boiler The wind attracted from atmosphere is sent directly into combustion chamber, can have a certain impact to the temperature of combustion chamber, especially northern winter, The regional atmospheric temperature having is very low, influences more, to reduce the thermal efficiency of boiler.

Summary of the invention

A kind of that the purpose of the utility model is to provide structures is simple, boiler can be improved supply air temperature reduces air inlet to combustion Burn room temperature influence, improve boiler the thermal efficiency, save the energy raising supply air temperature small size hot-water boiler, overcome existing The deficiency of technology.

The small size hot-water boiler of the raising supply air temperature of the utility model, has the furnace body of insulating layer including outside, in furnace body Inside upper part is fixedly connected with water tank by connecting plate, is equipped with multiple equally distributed furnace tubes, burner hearth on furnace body inside periphery The inner cavity of pipe is connected with the inner cavity of water tank, and furnace body inside lower part is equipped with grate, is terminated with pedestal, the upper end of furnace body under furnace body It is connected to smoke exhaust pipe, forms combustion chamber between grate and water tank, is higher than to be equipped at grate in the side of furnace body and connects with air supply device Air inlet, smoke exhaust pipe connects dust-extraction unit and blower unit, and blower unit runs in chimney.The smoke exhaust pipe and dust-extraction unit Between be equipped with shell-and-tube exchanger, smoke exhaust pipe connects with the shell side import on heat exchanger, the entrance of dust-extraction unit and heat friendship The shell-side outlet of parallel operation connects, and the tube-side inlet of heat exchanger is connected with outside atmosphere, the tube side outlet and three of heat exchanger A logical interface connects, another interface of threeway connects with the entrance of the air supply device, another interface of threeway connects Valve, valve are connected to outside atmosphere, have removal of impurities door in the bottom of heat exchanger.

The small size hot-water boiler of the raising supply air temperature of the utility model, since the entrance of air supply device passes through threeway and heat Exchanger connects, and heat exchanger connects with the smoke exhaust pipe of boiler, and flue gas walks the shell side of heat exchanger, then by dust-extraction unit, draw Wind apparatus is discharged into smoke evacuation chimney；The wind for being sent into combustion chamber through air supply device walks the tube side of heat exchanger, and wind is through meeting when over-heat-exchanger It is heated, improves the temperature of air-supply.Usually threeway connection valve close, when such as encountering deficiency in draught, can Open valve from Air quantity is directly filled into atmosphere.Simple with structure, boiler can be improved supply air temperature reduces air inlet to the shadow of chamber temperature It rings, the thermal efficiency of raising boiler, save the advantages of energy.Removal of impurities gate discharge shell heat exchanger can be periodically opened according to service condition The dust saved bit by bit in journey.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of specific embodiment of the present utility model.

Specific embodiment

The small size hot-water boiler of the raising supply air temperature of the utility model as shown in Figure 1: has insulating layer 5 including outside Furnace body 6.Water tank 4 is fixedly connected with by connecting plate 20 in 6 inside upper part of furnace body, is equipped in 6 inner peripheral of furnace body multiple uniform The inner cavity of the furnace tube 21 of distribution, furnace tube 21 is connected with the inner cavity of water tank 4.6 lower inside of furnace body is equipped with grate 8.Furnace body 6 Under be terminated with pedestal 1.Smoke exhaust pipe 3 is terminated on furnace body 6.Combustion chamber 22 is formed between grate 8 and water tank 4.In furnace body 6 Side is higher than the air inlet 7 for being equipped at grate 8 and connecting with air supply device 18.Smoke exhaust pipe 3 connects dust-extraction unit 12 and blower unit 14, blower unit 14 runs in chimney 13.Shell-and-tube exchanger 11, smoke exhaust pipe 3 are connected between smoke exhaust pipe 3 and dust-extraction unit 12 Connect with the shell side import 10 on heat exchanger 11, the entrance of dust-extraction unit 12 connects with the shell-side outlet 16 of heat exchanger 11. The tube-side inlet 9 of heat exchanger 11 is connected with outside atmosphere, and the tube side outlet 15 of heat exchanger 11 connects with one of threeway 19 Mouth connects.Another interface of threeway 19 connects with the entrance of air supply device 18.Another interface of threeway 19 connects valve 23, valve Door 23 be connected to outside atmosphere, has removal of impurities door 17 in the bottom of heat exchanger 11, the shell of clean door 17 and heat exchanger 11 it Between be equipped with and gasket and be fixedly connected using bolt.

The small size hot-water boiler of the raising supply air temperature of the utility model, since the entrance of air supply device 18 passes through threeway 19 Connect with heat exchanger 11, heat exchanger 11 connects with the smoke exhaust pipe 3 of boiler, and flue gas walks the shell side of heat exchanger 11, then by Dust-extraction unit 12, blower unit 14 are discharged into smoke evacuation chimney 13；The wind for being sent into combustion chamber 22 through air supply device 18 walks heat exchanger 11 Tube side, wind improve the temperature of air-supply through that can be heated when over-heat-exchanger 11.The valve 23 that usually threeway 19 connects is closed, When such as encountering deficiency in draught, can Open valve 23 air quantity is directly filled into from atmosphere.It is simple with structure, giving for boiler can be improved Air temperature, saves the advantages of energy at the thermal efficiency for reducing influence of the air inlet to chamber temperature, improving boiler.According to using feelings Condition can periodically open the dust that removal of impurities gate discharge heat exchanger shell side inner product is collected together.

Claims (1)

1. a kind of small size hot-water boiler for improving supply air temperature, there is the furnace body (6) of insulating layer (5) including outside, in furnace body (6) Upper lateral part is fixedly connected with water tank (4) by connecting plate (20), is equipped with multiple equally distributed burner hearths in furnace body (6) inner peripheral It manages (21), the inner cavity of furnace tube (21) is connected with the inner cavity of water tank (4), and furnace body (6) lower inside is equipped with grate (8), furnace body (6) it is terminated with pedestal (1), is terminated on furnace body (6) smoke exhaust pipe (3) under, form burning between grate (8) and water tank (4) Room (22) is higher than the air inlet (7) for being equipped at grate (8) and connecting with air supply device (18), smoke exhaust pipe in the side of furnace body (6) (3) dust-extraction unit (12) are connected and blower unit (14), blower unit (14) runs in chimney (13)；It is characterized by: described Shell-and-tube exchanger (11) are equipped between smoke exhaust pipe (3) and dust-extraction unit (12), on smoke exhaust pipe (3) and heat exchanger (11) Shell side import (10) connects, and the entrance of dust-extraction unit (12) connects with the shell-side outlet (16) of heat exchanger (11), heat exchanger (11) tube-side inlet (9) is connected with outside atmosphere, and one of the tube side outlet (15) and threeway (19) of heat exchanger (11) Interface connects, another interface of threeway (19) connects with the entrance of the air supply device (18), and another of threeway (19) connects Mouth connects valve (23), and valve (23) is connected to outside atmosphere, has removal of impurities door (17) in the bottom of heat exchanger (11).