A circulating hot air furnace
By introducing a heating box, circulation pipe, and gate design into the circulating hot air furnace, the problems of uneven temperature and heat loss are solved, achieving uniform heating of air and convenient fuel addition, thus improving heating efficiency and temperature control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIXING HONGYANG BUILDING MATERIALS CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-30
AI Technical Summary
Existing circulating hot air furnaces suffer from problems such as large temperature differences, poor hot air circulation, untimely fuel replenishment, and severe heat loss, resulting in poor heating effect and slow temperature rise.
The design incorporates a heating box and circulation pipe, along with heating wires, heat lamps, and a blower, to achieve air circulation heating and uniform flow. Fuel addition and sealing are controlled by a gate to prevent heat loss.
It achieves uniform heating of air and recycling of heat, improves heating efficiency, ensures convenient fuel addition and heat retention, and achieves stable heating effect.
Smart Images
Figure CN224434700U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot air furnace technology, specifically a circulating hot air furnace. Background Technology
[0002] A circulating hot air furnace is a device that uses circulating airflow to heat air and provide stable hot air. It transfers the heat generated by fuel combustion to the air to produce hot air and is widely used in many fields such as chemical, food, and building materials.
[0003] However, existing technologies still have many defects in some similar structures when used in practice. For example, the temperature difference between different areas inside the furnace will increase, causing local overheating of the heated object and affecting product quality. Hot air cannot circulate well and cannot achieve the expected heating effect. At the same time, due to the difficulty in replenishing fuel in time, the heat generated in the hot air furnace is insufficient and cannot meet the normal heating requirements, resulting in a slow temperature rise inside the furnace and the inability to prevent heat loss, thus reducing its practicality.
[0004] To address the aforementioned problems, the inventors proposed a circulating hot air furnace. Utility Model Content
[0005] In order to solve the problems of ineffective circulating heating and inconvenience in adding fuel to hot air furnaces, and to prevent heat loss, the purpose of this utility model is to provide a circulating hot air furnace.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a circulating hot air furnace, including a furnace body, an opening and closing device provided at the lower part of the furnace body, a heating device fixedly connected to the outer surface of the furnace body, the heating device including a gas supply pipe, the other end of the gas supply pipe being connected to a heating box, a circulation pipe being connected to one side of the heating box, and multiple heating rods arranged in a rectangular array being fixedly connected to the inner walls of the upper and lower sides of the heating box, with heating wires fixedly sleeved on the outer surface of the heating rods.
[0007] As a preferred technical solution of this application, the opening and closing device includes a gate, and two fixing blocks are fixedly connected to one side of the gate and the furnace body. A first connecting rod is rotatably connected to one side of the two upper fixing blocks, and a second connecting rod is rotatably connected to one side of the two lower fixing blocks. The two sides of the first connecting rod are respectively rotatably connected to the second connecting rod, and a handle is fixedly connected to the end of the first connecting rod.
[0008] Through the above technical solution, when the heating wire is energized, it generates heat, which is transferred to the surrounding air through heat transfer, raising the air temperature. The heat lamp emits heat, which plays an auxiliary role in heating and keeping the air in the heating chamber, reducing heat loss and improving heating efficiency. The circulation pipe transports the heated air back to the furnace body, realizing the recycling of hot air. The conical shape at both ends of the heating chamber helps the air to flow more evenly inside the heating chamber, allowing the air to fully absorb heat and improve the heating effect. The blower enables air to continuously enter the heating chamber from the furnace body through the air supply pipe, and after being heated, it returns to the furnace body through the circulation pipe, thus achieving cyclic heating.
[0009] As a preferred technical solution of this application, one end of the gas supply pipe is connected to the furnace body.
[0010] Through the above technical solution, the gas in the furnace body is discharged from the gas supply pipe.
[0011] As a preferred technical solution of this application, two heat-insulating lamps are fixedly connected to the inner walls of both the upper and lower sides of the heating box.
[0012] Through the above technical solution, the heat lamp can emit heat, which can play a role in auxiliary heating and heat preservation of the air in the heating box, reduce heat loss and improve heating efficiency.
[0013] As a preferred technical solution of this application, both sides of the heating box are conical.
[0014] The above technical solution allows the heating chamber to be tapered at both ends, which helps the air to flow more evenly inside the chamber, enabling the air to fully absorb heat and improve the heating effect.
[0015] As a preferred technical solution of this application, a blower is connected to one end of the heating box, and a connecting pipe is fixedly connected to the output end of the blower.
[0016] Through the above technical solution, the blower enables air to continuously enter the heating box from the furnace body through the air supply pipe.
[0017] As a preferred technical solution of this application, the outer surface of the gate is in contact with the lower inner wall of the furnace body.
[0018] With the above technical solution, when the handle is turned in the opposite direction, the gate will close, and its outer surface will fit against the lower inner wall of the furnace body, ensuring the sealing of the furnace body.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] 1. This utility model can transport heated air back to the furnace body through the circulation pipe to realize the recycling of hot air. The two ends of the heating box are conical, which helps the air to flow more evenly in the heating box, so that the air can fully absorb heat and improve the heating effect. The blower can make the air continuously enter the heating box from the furnace body through the air supply pipe, and after being heated, return to the furnace body through the circulation pipe, thereby achieving the purpose of circulating heating.
[0021] 2. This utility model allows the gate to open when the handle is turned in one direction, opening the lower part of the furnace body for easy operation. When the handle is turned in the opposite direction, the gate closes, with its outer surface fitting against the lower inner wall of the furnace body to ensure the furnace body's airtightness. This achieves the purpose of conveniently adding fuel and preventing heat loss. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a front view of the structure of this utility model.
[0024] Figure 2 This is a side view of the structure of this utility model.
[0025] Figure 3 This is a schematic diagram of the opening and closing device of this utility model.
[0026] Figure 4 This is a schematic diagram of the heating device of this utility model.
[0027] In the diagram: 1. Furnace body; 2. Opening and closing device; 3. Heating device; 21. Gate; 22. Fixing block; 23. First connecting rod; 24. Second connecting rod; 25. Handle; 31. Gas supply pipe; 32. Heating box; 33. Circulation pipe; 34. Heat preservation lamp; 35. Heating rod; 36. Heating wire; 37. Blower; 38. Connecting pipe. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Example: Figure 1-4 As shown, this utility model provides a circulating hot air furnace, including a furnace body 1, an opening and closing device 2 at the lower part of the furnace body 1, and a heating device 3 fixedly connected to the outer surface of the furnace body 1.
[0030] The heating device 3 includes a gas supply pipe 31, one end of which is connected to the furnace body 1, and the other end of which is connected to a heating box 32. Both sides of the heating box 32 are conical, and a circulation pipe 33 is connected to one side of the heating box 32. Two heat-insulating lamps 34 are fixedly connected to the inner walls of the upper and lower sides of the heating box 32. Multiple heating rods 35 arranged in a rectangular array are fixedly connected to the inner walls of the upper and lower sides of the heating box 32. Heating wires 36 are fixedly sleeved on the outer surface of the heating rods 35. A blower 37 is connected to one end of the heating box 32, and a connecting pipe 38 is fixedly connected to the output end of the blower 37.
[0031] The circulation pipe 33 transports the heated air back to the furnace body 1, realizing the recycling of hot air. The two ends of the heating box 32 are conical, which helps the air to flow more evenly in the heating box 32, so that the air can fully absorb heat and improve the heating effect. The blower 37 enables the air to continuously enter the heating box 32 from the furnace body 1 through the air supply pipe 31, and after being heated, it returns to the furnace body 1 through the circulation pipe 33, thus achieving cyclic heating.
[0032] The opening and closing device 2 includes a gate 21. The outer surface of the gate 21 is attached to the lower inner wall of the furnace body 1. Two fixing blocks 22 are fixedly connected to one side of the gate 21 and the furnace body 1. A first connecting rod 23 is rotatably connected to one side of the two upper fixing blocks 22, and a second connecting rod 24 is rotatably connected to one side of the two lower fixing blocks 22. The two sides of the first connecting rod 23 are rotatably connected to the second connecting rod 24 respectively. A handle 25 is fixedly connected to the end of the first connecting rod 23.
[0033] When the handle 25 is turned in one direction, the gate 21 will open, opening the lower part of the furnace body 1 for easy operation; when the handle 25 is turned in the opposite direction, the gate 21 will close, its outer surface will fit against the lower inner wall of the furnace body 1 to ensure the sealing of the furnace body 1, making it easy to add fuel and preventing heat loss.
[0034] The working principle of a circulating hot air furnace according to an embodiment of this application is as follows: When the handle 25 is operated, the first connecting rod 23 is rotated. Due to the rotational connection between the first connecting rod 23 and the second connecting rod 24, the rotation of the first connecting rod 23 will drive the second connecting rod 24 to rotate through the connecting rod mechanism, thereby causing the gate 21 to move along the lower part of the furnace body 1. When the handle 25 is rotated in one direction, the gate 21 will open, making the lower part of the furnace body 1 open, which is convenient for corresponding operations. When the handle 25 is rotated in the opposite direction, the gate 21 will close, and its outer surface will fit against the lower inner wall of the furnace body 1 to ensure the sealing of the furnace body 1, thereby achieving the purpose of conveniently adding fuel and preventing heat loss.
[0035] When the heating wire 36 is energized, it generates heat, which is transferred to the surrounding air through heat transfer, raising the air temperature. The heat lamp 34 emits heat, which plays an auxiliary role in heating and keeping the air in the heating box 32 warm, reducing heat loss and improving heating efficiency. The circulation pipe 33 transports the heated air back to the furnace body 1, realizing the recycling of hot air. The conical shape at both ends of the heating box 32 helps the air to flow more evenly in the heating box 32, allowing the air to fully absorb heat and improve the heating effect. The blower 37 enables air to continuously enter the heating box 32 from the furnace body 1 through the air supply pipe 31, and after being heated, it returns to the furnace body 1 through the circulation pipe 33, thus achieving the purpose of circulating heating.
[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A circulating hot air furnace, comprising a furnace body (1), characterized in that: The lower part of the furnace body (1) is provided with an opening and closing device (2), and a heating device (3) is fixedly connected to the outer surface of the furnace body (1); The heating device (3) includes a gas supply pipe (31), the other end of which is connected to a heating box (32). A circulation pipe (33) is connected to one side of the heating box (32). Multiple heating rods (35) arranged in a rectangular array are fixedly connected to the inner walls of the upper and lower sides of the heating box (32). Heating wires (36) are fixedly sleeved on the outer surface of the heating rods (35).
2. The circulating hot air furnace as described in claim 1, characterized in that: The opening and closing device (2) includes a gate (21). The gate (21) is fixedly connected to one side of the furnace body (1) by two fixing blocks (22). The upper two fixing blocks (22) are rotatably connected to one side by a first connecting rod (23), and the lower two fixing blocks (22) are rotatably connected to one side by a second connecting rod (24). The two sides of the first connecting rod (23) are rotatably connected to the second connecting rod (24) respectively. The end of the first connecting rod (23) is fixedly connected to a handle (25).
3. A circulating hot air furnace as described in claim 1, characterized in that: One end of the gas supply pipe (31) is connected to the furnace body (1).
4. A circulating hot air furnace as described in claim 1, characterized in that: Two heat-insulating lamps (34) are fixedly connected to the inner walls of the upper and lower sides of the heating box (32).
5. A circulating hot air furnace as described in claim 1, characterized in that: Both sides of the heating box (32) are conical.
6. A circulating hot air furnace as described in claim 1, characterized in that: One end of the heating box (32) is connected to a blower (37), and the output end of the blower (37) is fixedly connected to a connecting pipe (38).
7. A circulating hot air furnace as described in claim 2, characterized in that: The outer surface of the gate (21) is in contact with the lower inner wall of the furnace body (1).