A full air-cooled structure coil pipe steam boiler

Abstract

The utility model provides a kind of full air cooling structure coil pipe steam boiler, including boiler body and condensing integrated machine, the top of boiler body is equipped with burner, the side of burner is equipped with fan, the bottom of boiler body is equipped with cold air inlet, the outside of boiler body is equipped with heat preservation layer, the outer peripheral wall of whole boiler is wrapped by the heat preservation layer, air passage is equipped between the heat preservation layer and boiler body, the air passage is spiral, by the spiral air passage of being set in boiler body, cold air enters from the bottom strip-shaped hole of boiler body, boiler body shell temperature 280-350 ℃, cold air exchanges heat by spiral passage and shell, reduce shell temperature while improving air temperature, can improve cold air temperature to 70 ℃ or more, promote fuel ignition speed to speed up, combustion process is more stable, strengthen furnace airflow disturbance, make fuel combustion more fully, reduce incomplete combustion loss, reduce fuel consumption.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, and in particular to a fully air-cooled coil steam boiler. Background Technology

[0002] A steam boiler is an energy conversion device. The energy input to the boiler includes the chemical energy of the fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. In the existing steam boiler structure, there are various cooling methods. For example, some boilers use water cooling, which has problems such as high water consumption and difficulty in cleaning scale. On the other hand, some air-cooled boilers have unreasonable air circulation design, resulting in poor cooling effect and affecting the overall performance and service life of the boiler.

[0003] To address these issues, a fully air-cooled coil steam boiler is proposed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology and solve the problems of the existing steam boiler cooling methods, this utility model provides a fully air-cooled coil steam boiler.

[0005] This utility model is achieved using the following technical solution:

[0006] A fully air-cooled coil steam boiler includes a boiler body and a condensing unit. A burner is provided on the top of the boiler body, and a fan is provided on the side of the burner. The fan is fixed to the upper surface of the condensing unit.

[0007] The boiler body is provided with a cold air inlet at the bottom, which is arranged around the boiler body. The boiler body is provided with a flue gas outlet at the bottom. The boiler body is provided with an insulation layer on the outside, which surrounds the entire outer wall of the boiler. An air channel is provided between the insulation layer and the boiler body.

[0008] The air passage is spiral-shaped.

[0009] The bottom of the air duct is connected to the cold air inlet, and the top side of the air duct is connected to the inlet of the fan.

[0010] The boiler body and the condensing unit are equipped with a base at the bottom, and the base has through holes and is fixedly connected to the ground by bolts.

[0011] A filter screen is provided on the back of the cold air inlet, and the filter screen is fixedly connected to the boiler body by bolts.

[0012] The present invention has the following advantages over the prior art:

[0013] 1. Through the spiral air channel set in the boiler body, cold air enters from the strip hole at the bottom of the boiler body. The temperature of the boiler body shell is 280-350℃. The cold air exchanges heat with the shell through the spiral channel, which lowers the shell temperature and raises the air temperature at the same time. The cold air temperature can be raised to above 70℃, which promotes faster fuel ignition, makes the combustion process more stable, strengthens the airflow disturbance in the furnace, makes the fuel combustion more complete, reduces incomplete combustion loss, and reduces fuel consumption.

[0014] 2. By reheating cold air, the air preheater can be replaced to reduce equipment costs, the insulation thickness of the main body can be reduced, heat loss can be reduced, and thermal efficiency can be improved. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention;

[0016] Figure 2 This is the right view of this utility model;

[0017] Figure 3 This is the left view of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the boiler body of this utility model;

[0019] Figure 5 This is a side view sectional structural diagram of the boiler body of this utility model;

[0020] Figure 6 This is a schematic diagram of the back of the cold air inlet of this utility model;

[0021] In the diagram: 1. Boiler body; 11. Cold air inlet; 12. Filter screen; 13. Flue gas outlet; 14. Insulation layer; 15. Air passage; 2. Base; 3. Burner; 4. Fan; 5. Condensing unit. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figures 1 to 6As shown, a fully air-cooled coil steam boiler includes a boiler body 1 and a condensing unit 5. The top of the boiler body 1 is provided with a burner 3, which is used to provide the energy required for combustion to heat the water in the boiler to generate steam. The side of the burner 3 is provided with a fan 4, which promotes the flow of air and provides power for the cooling and combustion of the boiler. The fan 4 is fixed to the upper surface of the condensing unit 5.

[0025] The boiler body 1 has a cold air inlet 11 at its bottom, which surrounds the boiler body 1. This surround design ensures that cold air can enter the bottom of the boiler evenly, providing sufficient cold air for subsequent processes. The boiler body 1 has a flue gas outlet 13 at its bottom for discharging the flue gas generated by combustion. The boiler body 1 has an insulation layer 14 on its exterior, which surrounds the entire outer wall of the boiler. An air channel 15 is provided between the insulation layer 14 and the boiler body 1. The function of the insulation layer 14 is to reduce the loss of heat inside the boiler and improve thermal efficiency.

[0026] The air passage 15 is spiral-shaped. The spiral shape of the air passage 15 increases the airflow path and time within the passage, allowing the air to fully absorb the heat emitted by the boiler body 1, thereby improving the cooling effect.

[0027] The bottom of the air passage 15 is connected to the cold air inlet 11, and the top side of the air passage 15 is connected to the inlet of the fan 4. In this way, cold air enters the air passage 15 from the cold air inlet 11, absorbs heat during its flow within the passage, and is then drawn out by the fan 4, forming a complete cooling cycle. This process can raise the temperature of the cold air to above 70°C, promoting faster fuel ignition and a more stable combustion process. It also enhances airflow disturbance within the furnace, resulting in more complete fuel combustion, reduced incomplete combustion losses, and lower fuel consumption.

[0028] The boiler body 1 and the condensing unit 5 are both equipped with a base 2 at their bottom. The base 2 has through holes and is fixedly connected to the ground by bolts. The base 2 ensures the stability of the boiler and facilitates installation and fixation.

[0029] A filter screen 12 is provided on the back of the cold air inlet 11. The filter screen 12 is fixedly connected to the boiler body 1 by bolts. The function of the filter screen 12 is to filter dust and impurities in the air entering the cold air inlet 11, preventing them from entering the air passage 15 and the boiler interior, thus affecting the cooling effect and normal operation of the boiler.

[0030] The working principle of this utility model is as follows: When in use, the burner 3 is started, and the burner 3 starts to burn fuel to provide heat to the boiler, heat the water in the boiler to produce steam, and the fan 4 is started. The fan 4 starts to work and generates negative pressure, so that cold air enters the air channel 15 from the cold air inlet 11. The cold air flows in the spiral air channel 15 and absorbs the heat emitted by the boiler body 1, and the temperature gradually rises.

[0031] The heated air is drawn out by the fan 4 from the top side of the air channel 15. The air is heated again, which can replace the air preheater to reduce equipment costs, reduce the insulation thickness of the body, reduce heat loss, and improve thermal efficiency. At the same time, the flue gas produced by combustion is discharged from the flue gas outlet 13.

[0032] During operation, regularly check the filter 12 for blockage. If the filter 12 is found to be blocked, clean or replace it in time to ensure air circulation and cooling effect.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A full air-cooled structural coil steam boiler comprising a boiler body (1) and a condensing unit (5), characterized in that, The boiler body (1) is provided with a burner (3) on the top, and a fan (4) is provided on the side of the burner (3). The fan (4) is fixed on the upper surface of the condensing unit (5). The boiler body (1) has a cold air inlet (11) at the bottom, which surrounds the boiler body (1). The boiler body (1) has a flue gas outlet (13) at the bottom. The boiler body (1) has an insulation layer (14) on the outside, which surrounds the outer wall of the entire boiler. An air channel (15) is provided between the insulation layer (14) and the boiler body (1).

2. A fully air cooled structural coil steam boiler as claimed in claim 1 wherein: The air passage (15) is spiral-shaped.

3. A fully air cooled structural coil boiler as claimed in claim 1 wherein: The bottom of the air passage (15) is connected to the cold air inlet (11), and the top side of the air passage (15) is connected to the inlet of the fan (4).

4. A fully air cooled structural coil boiler as claimed in claim 1 wherein: The boiler body (1) and the condenser unit (5) are provided with a base (2) at the bottom. The base (2) has a through hole and is fixedly connected to the ground by bolts.

5. A fully air cooled structural coil boiler as claimed in claim 1 wherein: A filter screen (12) is provided on the back of the cold air inlet (11), and the filter screen (12) is fixedly connected to the boiler body (1) by bolts.

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