A boiler unit with a variable dual flue arrangement

By introducing a variable dual flue arrangement into the boiler unit and using a motor-driven helical gear and screw system to adjust the flue gas flow direction and velocity, the problem of the single flue structure in existing boilers has been solved, achieving higher thermal efficiency and combustion stability.

CN224284670UActive Publication Date: 2026-05-26SHAOWU ZHONGRAN ENERGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHAOWU ZHONGRAN ENERGY CO LTD
Filing Date
2025-06-18
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing boiler flue structure is too simple, making it impossible to optimize flue gas flow and distribution according to operational needs, resulting in reduced thermal efficiency and combustion stability.

Method used

A boiler device with a variable dual flue arrangement is designed. The folding plates inside the flue are adjusted by a motor-driven helical gear and screw system to change the flue gas flow direction and velocity, so as to adapt to different combustion requirements and load changes.

Benefits of technology

It improves the adaptability of boilers, reduces flue gas emissions and energy waste, and enhances thermal efficiency and combustion stability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224284670U_ABST
    Figure CN224284670U_ABST
Patent Text Reader

Abstract

This utility model discloses a boiler device with a variable dual flue arrangement in the field of boiler technology. It includes a boiler body, a connecting shaft rotatably mounted on the surface of a fixed frame, an output end of a motor fixedly connected to one end of the connecting shaft, a first helical gear fixedly connected to one end of the connecting shaft, a bidirectional screw rotatably mounted on the inner side of a sliding groove, a second helical gear fixedly mounted on the surface of the bidirectional screw, the upper end of the second helical gear meshing with the lower end of the first helical gear, and a first slider and a second slider respectively threadedly rotatably connected to both ends of the bidirectional screw. A first fixed rod is fixedly mounted above the first slider. By adjusting the flue gas flow direction and velocity under different operating conditions, it can adapt to different combustion requirements and load changes. This flexibility not only improves the boiler's adaptability but also helps reduce flue gas emissions and energy waste.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of boiler technology, specifically relating to a boiler device with a variable dual flue arrangement. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water, or organic heat carriers with a certain amount of thermal energy. The hot water or steam produced in the boiler can directly provide the heat energy needed for industrial production and daily life, or it can be converted into mechanical energy through a steam power unit, or further converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, mainly used for domestic purposes, with some applications in industrial production.

[0003] Existing boiler flues still have some defects. Most boiler flues have a relatively simple internal structure, making it inconvenient to optimize the flow and distribution of flue gas according to operational needs, thereby reducing the boiler's thermal efficiency and combustion stability. To address this, we propose a boiler device with a variable dual flue arrangement. Utility Model Content

[0004] The purpose of this invention is to provide a boiler device with a variable dual flue arrangement to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a boiler device with a variable double flue arrangement, comprising a boiler body, a flue pipe installed on one side of the boiler body, a dust removal device installed at one end of the flue pipe, a purification device fixedly connected to one side of the dust removal device, a chimney pipe fixedly connected to one side of the purification device, a motor provided on one side of the flue pipe, a fixing frame provided on the inner side of the flue pipe, a connecting shaft provided on the surface of the fixing frame, a first helical gear provided at one end of the connecting shaft, a sliding groove provided at the bottom inner side of the flue pipe, a bidirectional screw provided on the inner side of the sliding groove, a second helical gear provided on the surface of the bidirectional screw, a first slider and a second slider provided at both ends of the bidirectional screw, a first fixing rod provided above the first slider, a first connecting block provided at the top of the first fixing rod, a folding plate provided on one side of the first connecting block, a second fixing rod provided above the second slider, and a second connecting block provided at the top of the second fixing rod.

[0006] Preferably, a connecting shaft is rotatably mounted on the surface of the fixed frame, the output end of the motor is fixedly connected to one end of the connecting shaft, and a first helical gear is fixedly connected to one end of the connecting shaft.

[0007] Preferably, a bidirectional screw is rotatably mounted on the inner side of the groove, and a second helical gear is fixedly mounted on the surface of the bidirectional screw, with the upper part of the second helical gear meshing with the lower end of the first helical gear.

[0008] Preferably, the two ends of the bidirectional screw are respectively threadedly connected to a first slider and a second slider, and a first fixing rod is fixedly installed above the first slider.

[0009] Preferably, a first connecting block is fixedly installed at the top of the first fixing rod, and one side of the first connecting block is fixedly connected to one end of the folding plate.

[0010] Preferably, a second fixing rod is fixedly installed above the second slider, and a second connecting block is fixedly installed at the top of the second fixing rod, and the second connecting block is fixedly connected to the other end of the folding plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By adjusting the flue gas flow direction and velocity under different operating conditions, the boiler can adapt to varying combustion demands and load changes. This flexibility not only improves the boiler's adaptability but also helps reduce flue gas emissions and energy waste. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the flue of this utility model;

[0015] Figure 3 This is a schematic diagram of the side cross-sectional structure of the flue of this utility model.

[0016] In the diagram: 1. Boiler body; 2. Flue pipe; 3. Dust removal device; 4. Purification device; 5. Chimney pipe; 6. Motor; 7. Fixing frame; 8. Connecting shaft; 9. First helical gear; 10. Slide groove; 11. Bidirectional screw; 12. Second helical gear; 13. First slider; 14. First fixing rod; 15. First connecting block; 16. Folding plate; 17. Second slider; 18. Second fixing rod; 19. Second connecting block. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-3 This utility model provides a technical solution: a boiler device with a variable double flue arrangement, including a boiler body 1, a flue pipe 2 installed on one side of the boiler body 1, a dust removal device 3 installed at one end of the flue pipe 2, a purification device 4 fixedly connected to one side of the dust removal device 3, a chimney pipe 5 fixedly connected to one side of the purification device 4, a motor 6 provided on one side of the flue pipe 2, a fixing frame 7 provided on the inner side of the flue pipe 2, a connecting shaft 8 provided on the surface of the fixing frame 7, a first helical gear 9 provided at one end of the connecting shaft 8, a sliding groove 10 provided at the bottom of the inner side of the flue pipe 2, a bidirectional screw 11 provided on the inner side of the sliding groove 10, a second helical gear 12 provided on the surface of the bidirectional screw 11, a first slider 13 and a second slider 17 provided at both ends of the bidirectional screw 11, a first fixing rod 14 provided above the first slider 13, a first connecting block 15 provided at the top of the first fixing rod 14, a folding plate 16 provided on one side of the first connecting block 15, a second fixing rod 18 provided above the second slider 17, and a second connecting block 19 provided at the top of the second fixing rod 18.

[0019] Specifically, a connecting shaft 8 is rotatably mounted on the surface of the fixed frame 7. The output end of the motor 6 is fixedly connected to one end of the connecting shaft 8. A first helical gear 9 is fixedly connected to one end of the connecting shaft 8. A bidirectional screw 11 is rotatably mounted on the inner side of the slide groove 10. A second helical gear 12 is fixedly mounted on the surface of the bidirectional screw 11. The upper part of the second helical gear 12 is meshed with the lower end of the first helical gear 9. A first slider 13 and a second slider 17 are respectively threaded and rotatably connected to both ends of the bidirectional screw 11. A first fixing rod 14 is fixedly mounted on the upper part of the first slider 13. A first connecting block 15 is fixedly mounted on the top end of the first fixing rod 14. One side of the first connecting block 15 is fixedly connected to one end of the folding plate 16. A second fixing rod 18 is fixedly mounted on the upper part of the second slider 17. A second connecting block 19 is fixedly mounted on the top end of the second fixing rod 18. The second connecting block 19 is fixedly connected to the other end of the folding plate 16.

[0020] In this embodiment, the flue gas generated by the boiler body 1 passes through the interior of the flue pipe 2 and is then cleaned by the dust removal device 3. The toxic gases in the flue gas are filtered by the purification device 4, and finally discharged through the chimney pipe 5. When it is necessary to adjust the flow of flue gas in the flue pipe 2, the operation of the motor 6 can drive the connecting shaft 8 and the first helical gear 9 to rotate. The rotation of the first helical gear 9 will drive the rotation of the second helical gear 12 and the bidirectional screw 11. The rotation of the bidirectional screw 11 can drive the first slider 13 and the second slider 17 at both ends of the surface to move in opposite directions inside the slide groove 10. When the first slider 13 and the second slider 17 move in opposite directions, they will cause the folding plates 16 to fold against each other, thereby changing the flow path of the flue gas inside the flue pipe 2, reducing the flow rate of the flue gas, increasing the contact time between the flue pipe 2 and the preheating water pipe, and improving the utilization efficiency of the flue gas.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler device with a variable dual flue arrangement, comprising a boiler body (1), characterized in that: A flue pipe (2) is installed on one side of the boiler body (1). A dust removal device (3) is installed at one end of the flue pipe (2). A purification device (4) is fixedly connected to one side of the dust removal device (3). A chimney pipe (5) is fixedly connected to one side of the purification device (4). A motor (6) is provided on one side of the flue pipe (2). A fixing frame (7) is provided on the inner side of the flue pipe (2). A connecting shaft (8) is provided on the surface of the fixing frame (7). A first helical gear (9) is provided at one end of the connecting shaft (8). A sliding groove (10) is provided at the bottom of the inner side of the flue pipe (2). The inner side of 10) is provided with a bidirectional screw (11), the surface of the bidirectional screw (11) is provided with a second helical gear (12), the two ends of the bidirectional screw (11) are provided with a first slider (13) and a second slider (17), the first slider (13) is provided with a first fixing rod (14) above it, the top end of the first fixing rod (14) is provided with a first connecting block (15), the side of the first connecting block (15) is provided with a folding plate (16), the second slider (17) is provided with a second fixing rod (18) above it, the top end of the second fixing rod (18) is provided with a second connecting block (19).

2. The boiler device with a variable double flue arrangement according to claim 1, characterized in that: A connecting shaft (8) is rotatably mounted on the surface of the fixed frame (7). The output end of the motor (6) is fixedly connected to one end of the connecting shaft (8). A first helical gear (9) is fixedly connected to one end of the connecting shaft (8).

3. The boiler device with a variable double flue arrangement according to claim 1, characterized in that: A bidirectional screw (11) is rotatably mounted on the inner side of the slide groove (10), and a second helical gear (12) is fixedly mounted on the surface of the bidirectional screw (11). The upper part of the second helical gear (12) meshes with the bottom end of the first helical gear (9).

4. A boiler device with a variable double flue arrangement according to claim 1, characterized in that: The two ends of the bidirectional screw (11) are respectively threadedly connected to a first slider (13) and a second slider (17), and a first fixing rod (14) is fixedly installed above the first slider (13).

5. A boiler device with a variable double flue arrangement according to claim 1, characterized in that: A first connecting block (15) is fixedly installed at the top of the first fixing rod (14), and one side of the first connecting block (15) is fixedly connected to one end of the folding plate (16).

6. A boiler device with a variable double flue arrangement according to claim 1, characterized in that: A second fixing rod (18) is fixedly installed above the second slider (17), and a second connecting block (19) is fixedly installed at the top of the second fixing rod (18). The second connecting block (19) is fixedly connected to the other end of the folding plate (16).