Movable flue structure

Abstract

The utility model discloses a movable flue structure which comprises a flue fixing plate fixedly arranged in a combustion chamber, a first smoke flow channel is arranged between the flue fixing plate and the top of a combustion inner frame, a second smoke flow channel communicated with the first smoke flow channel is arranged between the flue fixing plate and a fireplace door, and a third smoke flow channel is arranged on the flue fixing plate. A flue moving part used for sealing or opening the third smoke flow channel is movably arranged at the third smoke flow channel, a flue connecting part is arranged at the upper end of the flue moving part, an ejector rod is arranged in the combustion chamber, one end of the ejector rod abuts against the flue connecting part, and the other end of the ejector rod is connected with the fireplace door. According to the wood-fired fireplace, through conversion between direct exhaust and non-direct exhaust of smoke, no obvious smoke is generated at any stage in the using process of the wood-fired fireplace, and environment protection is facilitated; and when the ejector rod does not eject the flue moving part, the flue moving part falls down through gravity to seal the third smoke flow channel, so that opening and closing are more convenient and simpler.

Description

Technical Field

[0001] The utility model relates to the technical field of movable flue structures of combustion furnaces, in particular to a movable flue structure. Background Art

[0002] In order to meet the EU's energy efficiency standards, existing wood-burning fireplaces are designed with a flue system on the top of the combustion chamber to prevent direct exhaust of smoke.

[0003] The combustion stove includes a fireplace body and a fireplace door hinged to the fireplace body. A fireplace cover is provided at the upper end of the fireplace body. A combustion inner frame is provided in the fireplace body. A combustion chamber is opened on the combustion inner frame. Wood is stored in the combustion chamber for combustion. A chimney connecting the combustion chamber and the outside is provided on the combustion inner frame and the fireplace cover to discharge the smoke in the combustion chamber.

[0004] Because of the existence of a flue system that blocks the direct exhaust of smoke, when the wood is first ignited, it will produce a large amount of smoke and dust due to incomplete combustion. This can cause the glass to blacken and even smoke to leak into the room, choking the user. During the use of wood-burning fireplaces, it is necessary to add wood frequently. When the fireplace door is opened to add wood, smoke and dust can easily enter the room, which is very unhygienic. Utility Model Content

[0005] (1) Technical issues to be resolved

[0006] The technical problem to be solved by the utility model is to provide a movable flue structure which does not generate obvious smoke and dust at any stage, thus contributing to environmental protection.

[0007] (2) Technical solution

[0008] The solution adopted by the present invention to solve the above technical problems is a movable flue structure, comprising a flue fixing plate fixedly arranged in a combustion chamber, a first flue between the flue fixing plate and the top of the combustion inner frame, a second flue connected to the first flue between the flue fixing plate and the fireplace door, a third flue on the flue fixing plate, a flue movable member for sealing or opening the third flue movably provided at the third flue, a flue connecting member provided at the upper end of the flue movable member, a push rod provided in the combustion chamber, one end of the push rod abutting against the flue connecting member, and the other end of the push rod connected to the fireplace door;

[0009] When the fireplace door is opened, the push rod moves together to the side close to the fireplace door, the flue movable member rotates to open the third flue, and smoke enters the first flue through the second flue or the third flue and is discharged from the chimney.

[0010] When the fireplace door is closed, the push rod moves together to the side away from the fireplace door, and the push rod pushes the flue connecting part to move, driving the flue movable part to rotate and close and seal the third smoke flow channel. The smoke enters the first smoke flow channel through the second smoke flow channel and is discharged from the chimney.

[0011] By adopting the above scheme, by setting up a third smoke flow duct that can be opened for ventilation or closed for sealing, the fireplace can achieve the purpose of direct exhaust when it is first ignited and when wood is added during use; by the conversion of direct and non-direct exhaust of smoke, it is guaranteed that the wood-burning fireplace can provide customers with a perfect experience at any stage during the use of the wood-burning fireplace; no obvious smoke and dust is generated at any stage during the use of the wood-burning fireplace, which is helpful for environmental protection; by setting up a push rod, the flue movable part can be lifted to open the third smoke flow duct, and when the push rod is not moving, the third smoke flow duct is sealed by gravity, making opening and closing more convenient and simple.

[0012] Preferably, a fixing block is provided at the upper end of the flue fixing plate, located outside the third smoke flow duct, and a rotating shaft is rotatably provided on the fixing block, and the rotating shaft is connected to the flue movable part.

[0013] Preferably, the flue movable part includes a first movable plate, a second movable plate and a third movable plate, the first movable plate is arranged at the third smoke flow duct, the second movable plate is arranged at the lower end of the first movable plate, and the third movable plate is arranged on one side of the upper end of the second movable plate.

[0014] As a further preference, a counterweight is provided at the lower end of the first movable plate on a side of the second movable plate close to the fireplace door.

[0015] Preferably, a limit block is provided on the first movable plate.

[0016] As a further preference, a connecting plate is provided on the flue fixing plate, a limiting through hole is provided on the connecting plate, and the push rod passes through the limiting through hole.

[0017] As a further preference, a first guide plate is provided on the side of the combustion inner frame close to the fireplace door, a second guide plate is provided on the side of the flue fixing plate close to the fireplace door, and the second smoke flow duct is formed between the first guide plate and the second guide plate.

[0018] As a further preference, the first guide plate is provided with a through hole for the push rod to pass through.

[0019] (3) Beneficial effects

[0020] Compared with the existing technology, the utility model designs a movable flue structure.

[0021] (1) By setting up a third smoke flow channel that can be opened for ventilation or closed for sealing, the fireplace can achieve the purpose of direct exhaust when it is first ignited and when wood is added during use; by converting the smoke into direct exhaust and indirect exhaust, the wood-burning fireplace can provide customers with a perfect experience at any stage during use; the wood-burning fireplace does not generate obvious smoke at any stage during use, which helps protect the environment;

[0022] (2) When it is necessary to add firewood, the fireplace door is opened, and the fireplace door drives the push rod to move. By setting the push rod to push the flue connecting part, the flue movable part can be lifted to open the third flue. When the push rod is not pushed, the third flue is sealed by gravity, making opening and closing more convenient and simple;

[0023] (3) The counterweight block can be set to make it easier for the flue moving parts to close without being pulled by the ejector rod;

[0024] (4) The movement direction of the ejector rod can be limited by setting a limit hole, and no misalignment will occur;

[0025] (5) No obvious smoke is generated at any stage during use, which helps protect the environment and meets EU emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of a movable flue structure with a combustion furnace according to the present invention;

[0027] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at A;

[0028] Figure 3 This is a schematic diagram of the fracture structure of the movable flue structure with a combustion furnace of the utility model;

[0029] Figure 4 This is a first structural schematic diagram of the movable flue structure of the utility model;

[0030] Figure 5 This is a second structural schematic diagram of the movable flue structure of the utility model;

[0031] Figure 6 This is a schematic diagram of the movable flue structure of the present invention in an open state.

[0032] Explanation of the accompanying reference numerals: 1. Flue fixing plate; 2. First smoke flow duct; 3. Second smoke flow duct; 4. Third smoke flow duct; 5. Flue movable part; 6. Flue connecting part; 7. Push rod; 8. Fixed block; 9. Rotating shaft; 10. First movable plate; 11. Second movable plate; 12. Third movable plate; 13. Counterweight block; 14. Limit block; 15. Connecting plate; 16. Limit through hole; 17. First guide plate; 18. Second guide plate; 19. Through hole; 20. Combustion chamber; 21. Combustion inner frame; 22. Fireplace door; 23. Chimney. DETAILED DESCRIPTION

[0033] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0035] This embodiment:

[0036] like Figures 1-6 As shown, a movable flue structure of this embodiment includes a flue fixing plate 1 fixedly arranged in a combustion chamber 20, a first flue 2 is provided between the flue fixing plate 1 and the top of the combustion inner frame 21, a second flue 3 connected to the first flue 2 is provided between the flue fixing plate 1 and the fireplace door 22, a third flue 4 is provided on the flue fixing plate 1, a flue movable member 5 for sealing or opening the third flue 4 is movably provided at the third flue 4, a flue connecting member 6 is provided at the upper end of the flue movable member 5, a push rod 7 is provided in the combustion chamber 20, one end of the push rod 7 is in conflict with the flue connecting member 6, and the other end of the push rod 7 is connected to the fireplace door 22;

[0037] When the fireplace door 22 is opened, the push rod 7 moves together to the side close to the fireplace door 22, and the flue movable member 5 rotates to open the third flue 4. The smoke enters the first flue 2 through the second flue 3 or the third flue 4 and is discharged from the chimney 23.

[0038] When the fireplace door 22 is closed, the push rod 7 moves together to the side away from the fireplace door 22, and the push rod 7 pushes the flue connecting part 6 to move, driving the flue movable part 5 to rotate and close and seal the third flue 4. The smoke enters the first flue 2 through the second flue 3 and is discharged from the chimney 23.

[0039] Specifically, in this embodiment, a combustion inner frame 21 is provided in the fireplace body, and a fireplace door 22 is hingedly connected to one side of the fireplace body, and the fireplace door 22 can be opened relative to it. A combustion chamber 20 is provided on the combustion inner frame 21, and a movable flue structure is provided in the combustion chamber 20. A chimney 23 connecting the combustion chamber 20 and the outside is provided on the combustion inner frame 21 and the fireplace cover to discharge the smoke in the combustion chamber 20; the movable flue structure includes a flue fixing plate 1, one side of the flue fixing plate 1 is connected to the inner wall of the combustion inner frame 21 on the side away from the fireplace door 22, and there are gaps between the flue fixing plate 1 and the inner wall of the combustion inner frame 21 on the side close to the fireplace door 22 and the top of the combustion inner frame 21. A gap is set, and the gap between the top of the combustion inner frame 21 forms a first smoke flow channel 2, and the gap between the inner wall of the combustion inner frame 21 close to the fireplace door 22 forms a second smoke flow channel 3. The second smoke flow channel 3 is always in a connected state with the first smoke flow channel 2. A third smoke flow channel 4 is provided on the flue fixing plate 1, and a flue movable part 5 that can be closed or opened is provided on the third smoke flow channel 4. When the flue movable part 5 is opened, the third smoke flow channel 4 is connected with the first smoke flow channel 2. At this time, the smoke can flow into the first smoke flow channel 2 through the third smoke flow channel 4 and the second smoke flow channel 3 and then be discharged; when closed, the two are not connected. At this time, the smoke can only enter the first smoke flow channel 2 through the second smoke flow channel 3 and then be discharged.

[0040] Specifically, in this example, a flue connector 6 is provided at the upper end of the flue movable part 5, and a push rod 7 is provided in the combustion chamber 20, one end of the push rod 7 contacts the flue connector 6, and the other end of the push rod 7 is connected to the fireplace door 22; when the fireplace door 22 is opened, the push rod 7 drives the push rod 7 to move toward the side close to the fireplace door 22, canceling the force on the flue connector 6, and the flue movable part 5 rotates open under the action of gravity, thereby opening the third flue 4. When the fireplace door 22 is closed, the push rod 7 moves to the side away from the fireplace door 22, thereby pushing the flue connector 6, and the flue connector 6 drives the flue movable part 5 to rotate and close to seal the third flue 4.

[0041] Specifically, in this example, by providing a third smoke duct 4 that can be opened for ventilation or closed for sealing, the fireplace can achieve the purpose of direct exhaust when it starts to ignite and when wood is added during use; by the conversion of direct and non-direct exhaust of smoke, it is guaranteed that the wood-burning fireplace can provide customers with a perfect experience at any stage during use; the wood-burning fireplace does not generate obvious smoke and dust at any stage during use, which is helpful for environmental protection; by providing a top rod 7, the flue movable part 5 can be lifted to open the third smoke duct 4, and when the top rod 7 is not pushed, the third smoke duct 4 is sealed by gravity, making opening and closing more convenient and simple.

[0042] Furthermore, as a preferred embodiment, a fixing block 8 is provided at the upper end of the flue fixing plate 1 on the outside of the third smoke flow duct 4 , and a rotating shaft 9 is rotatably provided on the fixing block 8 , and the rotating shaft 9 is connected to the flue movable part 5 .

[0043] Furthermore, as a preferred embodiment, the flue movable part 5 includes a first movable plate 10, a second movable plate 11 and a third movable plate 12. The first movable plate 10 is arranged at the third smoke flow duct 4, the second movable plate 11 is arranged at the lower end of the first movable plate 10, and the third movable plate 12 is arranged on one side of the upper end of the second movable plate 11.

[0044] Specifically, in this example, fixed blocks 8 are provided on both sides of the upper end of the flue fixing plate 1, and a rotating shaft 9 is provided between the two fixed blocks 8. The rotating shaft 9 is connected to the flue movable part 5, and the flue movable part 5 can be rotated and opened according to the rotating shaft 9; the flue movable part 5 includes a first movable plate 10, a second movable plate 11 and a third movable plate 12, the lower end of the first movable plate 10 is provided with the second movable plate 11, the upper end of the first movable plate 10 is provided with the third movable plate 12, and a movement space is provided between the first movable plate 10 and the inner wall of the side of the third flue 4 away from the fireplace door 22, and the movement space is used to rotate when the flue movable part 5 moves, and the third movable plate 12 is partially covered on the flue fixing plate 1 to seal the movement space.

[0045] Furthermore, as a preferred embodiment, a counterweight 13 is provided at the lower end of the first movable panel 10, located on the side of the second movable panel 11 near the fireplace door 22. Specifically, in this embodiment, the counterweight 13 is provided at the lower end of the first movable panel 10 and on the side of the second movable panel 11 near the fireplace door 22. Because the side of the first movable panel 10 near the fireplace door 22 moves downward to open the third smoke duct 4, the counterweight 13 is provided on the side near the fireplace door 22 to increase its weight, thereby making it easier to open.

[0046] Furthermore, as a preferred embodiment, a limiting block 14 is provided on the first movable plate 10 .

[0047] Furthermore, as a preferred embodiment, a connecting plate 15 is provided on the flue fixing plate 1 , a limiting through hole 16 is provided on the connecting plate 15 , and the push rod 7 passes through the limiting through hole 16 .

[0048] Specifically, in this example, a strip plate is provided at the lower end of the second movable plate 11, and perforations are provided on the strip plate, the second movable plate 11 and the first movable plate 10, through which a limit block 14 passes to limit the rotation angle and prevent the rotation angle from being too large; a connecting plate 15 is provided on the flue fixing plate 1, and a limiting through hole 16 is provided on the connecting plate 15, and the limiting through hole 16 is provided for the ejector rod 7 to pass through and to limit the movement direction of the ejector rod 7 so that it will not move with an angular offset, thereby causing the ejector rod 7 to always conflict with the flue connector 6.

[0049] Furthermore, as a preferred embodiment, a first guide plate 17 is provided on the side of the combustion inner frame 21 close to the fireplace door 22, and a second guide plate 18 is provided on the side of the flue fixing plate 1 close to the fireplace door 22, and the second smoke flow duct 3 is formed between the first guide plate 17 and the second guide plate 18.

[0050] Furthermore, as a preferred embodiment, a through hole 19 for the push rod 7 to pass through is formed on the first guide plate 17 .

[0051] Specifically, in this embodiment, a first guide plate 17 is provided on the side of the combustion inner frame 21 near the fireplace door 22. One end of the first guide plate 17 is connected to the top plate of the combustion inner frame 21, and the other end is connected to the inner wall of the combustion inner frame 21 near the fireplace door 22. A second guide plate 18 is provided on the side of the flue fixing plate 1 near the fireplace door 22. The second guide plate 18 is connected to the flue fixing plate 1 and the top plate of the combustion inner frame 21. A second smoke flow channel 3 is formed between the first and second guide plates 17, 18. A through hole 19 is formed in the first guide plate 17 for the push rod 7 to pass through. The through hole 19 is concentric with the stop hole 16. No noticeable smoke is generated at any stage during use, which helps protect the environment and meets EU emission standards.

[0052] The above are only preferred embodiments of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A movable flue structure, characterized in that: The invention comprises a flue fixing plate (1) fixedly arranged in a combustion chamber (20), a first flue (2) being provided between the flue fixing plate (1) and the top of the combustion inner frame (21), a second flue (3) being provided between the flue fixing plate (1) and the fireplace door (22) and being communicated with the first flue (2), a third flue (4) being provided on the flue fixing plate (1), a flue movable part (5) for sealing or opening the third flue (4) being movably provided at the third flue (4), a flue connecting part (6) being provided at the upper end of the flue movable part (5), a push rod (7) being provided in the combustion chamber (20), one end of the push rod (7) being in contact with the flue connecting part (6), and the other end of the push rod (7) being connected to the fireplace door (22); When the fireplace door (22) is opened, the push rod (7) moves together to the side close to the fireplace door (22), the flue movable part (5) rotates to open the third flue (4), and smoke enters the first flue (2) through the second flue (3) or the third flue (4) and is discharged from the chimney (23); When the fireplace door (22) is closed, the push rod (7) moves together to the side away from the fireplace door (22), and the push rod (7) pushes the flue connecting member (6) to move, driving the flue movable member (5) to rotate, close and seal the third flue (4), and smoke enters the first flue (2) through the second flue (3) and is discharged from the chimney (23).

2. The movable flue structure according to claim 1, characterized in that: The upper end of the flue fixing plate (1) is located outside the third flue (4) and is provided with a fixing block (8). A rotating shaft (9) is rotatably provided on the fixing block (8), and the rotating shaft (9) is connected to the flue movable part (5).

3. The movable flue structure according to claim 1, characterized in that: The flue movable part (5) includes a first movable plate (10), a second movable plate (11) and a third movable plate (12), wherein the first movable plate (10) is arranged at the third flue (4), the second movable plate (11) is arranged at the lower end of the first movable plate (10), and the third movable plate (12) is arranged on one side of the upper end of the second movable plate (11).

4. The movable flue structure according to claim 3, characterized in that: A counterweight (13) is provided at the lower end of the first movable plate (10) on a side of the second movable plate (11) close to the fireplace door (22).

5. The movable flue structure according to claim 3, characterized in that: A limiting block (14) is provided on the first movable plate (10).

6. The movable flue structure according to claim 3, characterized in that: A connecting plate (15) is provided on the flue fixing plate (1), a limiting through hole (16) is provided on the connecting plate (15), and the push rod (7) passes through the limiting through hole (16).

7. The movable flue structure according to claim 3, characterized in that: A first guide plate (17) is provided on a side of the combustion inner frame (21) close to the fireplace door (22), a second guide plate (18) is provided on a side of the flue fixing plate (1) close to the fireplace door (22), and the second smoke flow channel (3) is formed between the first guide plate (17) and the second guide plate (18).

8. The movable flue structure according to claim 7, characterized in that: The first guide plate (17) is provided with a through hole (19) for the push rod (7) to pass through.

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