Adjustable gas-fired hot-air furnace

Abstract

The utility model discloses an adjustable gas hot -blast furnace relates to hot -blast furnace technical field, including the furnace body, the furnace body inner chamber is equipped with the combustion storehouse, the combustion storehouse outer wall with furnace body inner chamber constitutes hot -blast storehouse, middle storehouse and bottom storehouse from top to bottom, the furnace body bottom is equipped with the ash storage room, the ash storage room side wall top is equipped with the regulating damper, the combustion storehouse inner chamber is equipped with at least three groups of through -pipe. The utility model has greatly improved the energy utilization efficiency, has reduced the operating cost.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of hot air furnaces, specifically an adjustable gas-fired hot air furnace. Background Technology

[0002] Traditional hot air furnaces mostly employ fixed combustion methods and simple ventilation structures. For example, some coal-fired hot air furnaces suffer from difficulty in precisely controlling the combustion process and cannot quickly adjust the hot air temperature according to actual needs. When ambient temperature changes or production processes have different requirements for hot air temperature, traditional hot air furnaces often cannot respond in time, resulting in excessively high or low hot air temperatures, affecting product quality or production efficiency. In some food drying industries, unstable hot air temperatures can lead to uneven drying of food, resulting in some parts being over-dried and others not, affecting food quality and shelf life.

[0003] Furthermore, some gas-fired hot air furnaces have poorly designed hot air circulation systems, resulting in obstructed airflow paths and localized dead zones. This prevents the hot air from fully exchanging heat with the materials inside the furnace, leading to uneven hot air temperature and reduced utilization efficiency. For example, in some industrial drying equipment, poor hot air circulation prevents some materials from receiving sufficient heat in a timely manner, prolonging drying time and increasing production costs. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an adjustable gas-fired hot air furnace to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An adjustable gas-fired hot air furnace includes a furnace body, the inner cavity of which is provided with a combustion chamber, the outer wall of which and the inner cavity of the furnace body form a hot air chamber, an intermediate chamber and a bottom chamber from top to bottom; the bottom of the furnace body is provided with an ash storage chamber, the top of the side wall of the ash storage chamber is provided with an adjustable damper, and the inner cavity of the combustion chamber is provided with at least three sets of through pipes.

[0006] Preferably, the top of the furnace body is provided with a water inlet pipe at one end and an air outlet pipe at the other end, hot air pipe joints are provided at both ends of the top of the furnace body side wall, and a furnace door is provided at the bottom of the furnace body side wall and in communication with the inner cavity of the combustion chamber.

[0007] Preferably, the water inlet pipe, the air outlet pipe, and the hot air pipe connector are all connected to the hot air chamber, and a flue is provided at the top of the hot air chamber and extending through the top of the furnace body.

[0008] Preferably, the intermediate compartment is located on the side wall of the furnace body and is connected to a drain valve connector.

[0009] Preferably, the bottom compartment is provided with multiple connecting pipes extending through the bottom of the combustion chamber, and the outer wall of the bottom compartment is connected to a fan connector.

[0010] Preferably, the bottom of the combustion chamber is connected to the top of the ash storage chamber, and the bottom of the combustion chamber and the top of the ash storage chamber are provided with perforated partitions.

[0011] Preferably, the bottom of the side wall of the ash storage chamber is provided with an ash outlet door.

[0012] Preferably, of the three sets of pipes, one set is used to connect the hot air chamber and the intermediate chamber, one set is used to connect the intermediate chamber and the bottom chamber, and one set is used to connect the hot air chamber and the bottom chamber.

[0013] In summary, this technical solution has the following main advantages: This invention employs a highly efficient burner design, ensuring thorough mixing of fuel gas and air for complete combustion. By precisely controlling the air-to-fuel ratio, it guarantees the maximum heat release during combustion, reducing unburned fuel emissions and improving fuel utilization. For example, the combustion efficiency of this hot air furnace can reach over 90%, a significant improvement compared to traditional hot air furnaces. In terms of furnace structure design, high-quality insulation materials and a reasonable insulation layer arrangement are used to effectively prevent heat loss to the surrounding environment. Simultaneously, the hot air circulation system is optimized to ensure full circulation of hot air within the furnace, reducing heat loss during transmission. These measures significantly improve energy efficiency and reduce operating costs. Attached Figure Description

[0014] Figure 1 Axonometric measurement of the overall structure of this utility model; Figure 2 Axonometric projection of the overall structure of this utility model; Figure 3 The overall structure of this utility model is isometrically measured three times.

[0015] Attached Figure Descriptions: 10. Furnace body; 11. Combustion chamber; 12. Hot air chamber; 13. Intermediate chamber; 14. Bottom chamber; 15. Ash storage chamber; 16. Regulating damper; 17. Through pipe; 101. Water inlet pipe; 102. Air outlet pipe; 103. Hot air pipe connector; 104. Furnace door; 131. Water drain valve connector; 141. Connecting pipe; 142. Fan connector; 111. Perforated baffle; 151. Ash outlet door. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Example like Figures 1 to 3 As shown, an adjustable gas-fired hot air furnace includes a furnace body 10. The furnace body 10 has a combustion chamber 11 inside. The outer wall of the combustion chamber 11 and the inner cavity of the furnace body 10 form a hot air chamber 12, an intermediate chamber 13, and a bottom chamber 14 from top to bottom. The bottom of the furnace body 10 has an ash storage chamber 15. The top of the side wall of the ash storage chamber 15 has an adjustable damper 16. The inner cavity of the combustion chamber 11 has at least three sets of through pipes 17.

[0018] A water inlet pipe 101 is provided at one end of the top of the furnace body 10, and an air outlet pipe 102 is provided at the other end. Hot air pipe joints 103 are provided at both ends of the top of the side wall of the furnace body 10. A furnace door 104 is provided at the bottom of the side wall of the furnace body 10 and in communication with the inner cavity of the combustion chamber 11.

[0019] The water inlet pipe 101, the air outlet pipe 102, and the hot air pipe connector 103 are all connected to the hot air chamber 12. The top of the hot air chamber 12 and the top of the furnace body 10 are provided with a flue 121.

[0020] The intermediate compartment 13 is located on the side wall of the furnace body 10 and is connected to a drain valve connector 131.

[0021] The bottom compartment 14 is provided with multiple connecting pipes 141 that pass through the bottom of the combustion chamber 11, and the outer wall of the bottom compartment 14 is connected to a fan connector 142.

[0022] The bottom of the combustion chamber 11 is connected to the top of the ash storage chamber 15, and the bottom of the combustion chamber 11 and the top of the ash storage chamber 15 are provided with perforated partitions 111.

[0023] Ash storage chamber 15 has an ash discharge door 151 at the bottom of its side wall.

[0024] Of the three sets of pipes 17, one set is used to connect the hot air chamber 12 and the intermediate chamber 13, one set is used to connect the intermediate chamber 13 and the bottom chamber 14, and one set is used to connect the hot air chamber 12 and the bottom chamber 14.

[0025] It should be noted that, in this embodiment, the adjustable gas-fired hot air furnace mainly consists of a furnace body 10 forming the core frame. The furnace body 10 is welded from high-strength heat-resistant steel to ensure structural stability in high-temperature environments. Its inner cavity is carefully designed with a combustion chamber 11, which is constructed of refractory bricks, providing excellent heat insulation and high-temperature resistance, effectively protecting the outer wall of the furnace body 10 from high-temperature erosion.

[0026] From top to bottom, the outer wall of the combustion chamber 11 and the inner cavity of the furnace body 10 form a hot air chamber 12, an intermediate chamber 13, and a bottom chamber 14. The hot air chamber 12 is located at the top of the furnace body 10 and is the main area for hot air output; the intermediate chamber 13 is located in the middle and plays a role in buffering and distributing heat; the bottom chamber 14 is located at the bottom and is connected to the bottom of the combustion chamber 11.

[0027] The bottom of the furnace body 10 is provided with an ash storage chamber 15, which is welded from steel plates and has sufficient internal space to accommodate the ash and slag produced by combustion. An adjustable damper 16 is installed on the top of the side wall of the ash storage chamber 15. The adjustable damper 16 consists of an adjustable baffle and a fixed frame. By rotating the baffle, the ventilation area can be changed, thereby adjusting the amount of air entering the combustion chamber 11.

[0028] The combustion chamber 11 is equipped with three sets of pipes 17. Each set of pipes 17 is made of high-temperature resistant stainless steel with a smooth surface to reduce heat loss. These three sets of pipes 17 are used to connect the hot air chamber 12 with the intermediate chamber 13, the intermediate chamber 13 with the bottom chamber 14, and the hot air chamber 12 with the bottom chamber 14, respectively, to realize the circulation of hot air between different chambers.

[0029] Connection and setup of each component The top of the furnace body 10: One end is equipped with a water inlet pipe 101, which is made of copper and has good thermal conductivity and corrosion resistance. It is threaded to the top of the furnace body 10 for easy disassembly and maintenance. The other end is equipped with an exhaust pipe 102, also made of copper, used to exhaust the exhaust gas produced during combustion. Hot air pipe connectors 103 are installed at both ends of the top side wall of the furnace body 10. The hot air pipe connectors 103 use flange connections to tightly connect to external hot air pipes, ensuring no hot air leakage.

[0030] The bottom of the side wall of the furnace body 10 is provided with a furnace door 104 that communicates with the inner cavity of the combustion chamber 11. The furnace door 104 is made of cast iron and has been treated with anti-rust. It is connected to the furnace body 10 by a hinge, making it easy to open and close, and convenient for adding fuel and cleaning the combustion chamber 11.

[0031] Intermediate compartment 13: A drain valve connector 131 is connected to the side wall of the furnace body 10. The drain valve connector 131 is made of stainless steel, which has good corrosion resistance and sealing performance. When the furnace needs to be drained or maintained, water can be drained through the drain valve connector 131 to ensure that the furnace is dry and to protect the internal equipment from moisture damage.

[0032] Bottom compartment 14: Multiple connecting pipes 141 are installed at the bottom of the combustion chamber 11. The connecting pipes 141 are made of high-temperature resistant rubber tubing and have a certain degree of flexibility to adapt to the relative displacement between the combustion chamber 11 and the bottom compartment 14. The outer wall of the bottom compartment 14 is connected to a fan connector 142. The fan connector 142 is a quick connector for easy connection to an external fan to provide sufficient air for combustion.

[0033] Combustion chamber 11 and ash storage chamber 15: The bottom of combustion chamber 11 is connected to the top of ash storage chamber 15, and a perforated baffle 111 is provided at the connection. The perforated baffle 111 is made of steel plate with appropriately sized holes, which ensures that ash and slag fall smoothly into ash storage chamber 15 while preventing unburned fuel from falling. Ash discharge door 151 is provided at the bottom of the side wall of ash storage chamber 15. Ash discharge door 151 is made of cast iron and is connected to the side wall of ash storage chamber 15 by bolts, making it easy to open and close and convenient for cleaning ash and slag.

[0034] The working principle of this utility model is as follows: Open the furnace door 104 and add an appropriate amount of fuel, such as natural gas or liquefied petroleum gas, into the combustion chamber 11. After ignition, the fuel burns violently in the combustion chamber 11, generating a large amount of heat. The heat generated by combustion causes the temperature inside the combustion chamber 11 to rise rapidly, while simultaneously producing high-temperature flue gas and ash. The ash falls into the ash storage chamber 15 through the perforated baffle 111, while the high-temperature flue gas flows upward within the combustion chamber 11.

[0035] During initial heating, high-temperature flue gas first enters the hot air chamber 12 to heat the air inside. At the same time, cold water is injected into the furnace body 10 through the water inlet pipe 101, and the cold water absorbs heat and gradually heats up inside the furnace body 10.

[0036] The amount of air entering the combustion chamber 11 is controlled by adjusting the damper 16, thereby regulating the combustion intensity and the amount of hot air generated. When it is necessary to increase the hot air output, the ventilation area of ​​the damper 16 is increased to allow more air to enter the combustion chamber 11, promoting complete combustion of fuel and generating more heat. At this time, the high-temperature air in the hot air chamber 12 flows into the intermediate chamber 13 through a set of pipes 17, where it is buffered and further heated. Then, the hot air in the intermediate chamber 13 flows into the bottom chamber 14 through another set of pipes 17, and the hot air in the bottom chamber 14 flows back to the hot air chamber 12 through a third set of pipes 17, forming a circulating flow of hot air. This ensures that the hot air is fully mixed and heated within the furnace body 10, improving the temperature and uniformity of the hot air.

[0037] The fully heated hot air is output to the external hot air duct through the hot air duct connector 103, providing a heat source for equipment or places that need heating. At the same time, the exhaust gas produced by combustion is discharged to the outside through the exhaust pipe 102, ensuring fresh indoor air.

[0038] The drain valve connector 131 can be opened when needed to drain the water in the furnace, preventing moisture from accumulating inside and damaging the equipment. When a certain amount of ash and slag accumulates in the ash storage chamber 15, the operator opens the ash outlet door 151 to remove the ash and slag, ensuring the normal operation and combustion efficiency of the hot blast stove.

[0039] This adjustable gas-fired hot air furnace, through its reasonable structural design and working principle, achieves efficient generation and regulation of hot air, and can meet the needs of different users for hot air temperature and flow rate.

[0040] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. An adjustable gas-fired hot air furnace, comprising a furnace body (10), characterized in that, The furnace body (10) has a combustion chamber (11) inside. The outer wall of the combustion chamber (11) and the furnace body (10) together form a hot air chamber (12), an intermediate chamber (13), and a bottom chamber (14) from top to bottom. The bottom of the furnace body (10) has an ash storage chamber (15). The top of the side wall of the ash storage chamber (15) has an adjusting damper (16). The combustion chamber (11) has at least three sets of through pipes (17).

2. The adjustable gas-fired hot air furnace according to claim 1, characterized in that, The furnace body (10) has a water inlet pipe (101) at one end of its top and an air outlet pipe (102) at the other end. The furnace body (10) has hot air pipe connectors (103) at both ends of its side wall. The furnace body (10) has a furnace door (104) at the bottom of its side wall that is connected to the inner cavity of the combustion chamber (11).

3. An adjustable gas-fired hot air furnace according to claim 2, characterized in that, The water inlet pipe (101), the air outlet pipe (102), and the hot air pipe connector (103) are all connected to the hot air chamber (12). The hot air chamber (12) is provided with a flue (121) at the top and through the top of the furnace body (10).

4. An adjustable gas-fired hot air furnace according to claim 1, characterized in that, The intermediate compartment (13) is located on the side wall of the furnace body (10) and is connected to a drain valve connector (131).

5. An adjustable gas-fired hot air furnace according to claim 1, characterized in that, The bottom chamber (14) is provided with multiple connecting pipes (141) passing through the bottom of the combustion chamber (11), and the outer wall of the bottom chamber (14) is connected to a fan connector (142).

6. An adjustable gas-fired hot air furnace according to claim 1, characterized in that, The bottom of the combustion chamber (11) is connected to the top of the ash storage chamber (15), and the bottom of the combustion chamber (11) and the top of the ash storage chamber (15) are provided with perforated partitions (111).

7. An adjustable gas-fired hot air furnace according to claim 1, characterized in that, The bottom of the side wall of the ash storage chamber (15) is provided with an ash discharge door (151).

8. An adjustable gas-fired hot air furnace according to claim 1, characterized in that, Of the three sets of connecting pipes (17), one set is used to connect the hot air chamber (12) and the intermediate chamber (13), one set is used to connect the intermediate chamber (13) and the bottom chamber (14), and one set is used to connect the hot air chamber (12) and the bottom chamber (14).

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