Flue closing-up structure and flue

Abstract

The utility model belongs to the field of building structures, and particularly relates to a flue closing-up structure and a flue. The transition cavity is formed in the inner wall of the flue, the flue opening is communicated with the transition cavity, a through opening is formed in the transition cavity, and a second sealing ring is arranged on the through opening; the ventilation pipeline penetrates through the flue opening and the through opening, so that a pipe body of the ventilation pipeline is nested on the flue opening and the through opening at the same time; according to the flue, smoke exhausted into the flue can leak out of the flue only after passing through the through opening provided with the second sealing ring, the transition cavity and the flue opening provided with the first sealing ring, that is, leakage of the smoke is hindered in a multi-layer mode, and therefore the air tightness of the flue is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of building structure, especially, a kind of flue closing structure and flue. BACKGROUND

[0002] Flue closing structure refers to the structure design of the connecting part between flue (the pipeline for discharging waste gas or smoke) and ventilation pipeline (such as the pipeline of extractor hood) in building or industrial facility, to avoid the leakage of flue gas from flue.

[0003] The existing flue closing structure is mainly sealed at flue opening, such as installing sealing ring or sealing hose at flue opening, but since ventilation pipeline is often hose, it is easy to deform, and then it is difficult to form close connection with sealing structure, so that a large amount of flue gas leaks from flue. UTILITY MODEL CONTENTS

[0004] The purpose of the utility model embodiment is to provide a kind of flue closing structure and flue, to solve the problem of poor sealing of the existing flue closing structure.

[0005] The utility model embodiment is realized as follows: a kind of flue closing structure is provided, which is arranged on the flue opening of flue, and the flue closing structure comprises:

[0006] First sealing ring is arranged on flue opening;

[0007] Transition cavity is arranged on the inner wall of flue, flue opening is communicated with transition cavity, and through opening is formed on transition cavity, and second sealing ring is arranged on through opening;Ventilation pipeline passes through flue opening and through opening, so that the pipe body of ventilation pipeline is simultaneously nested on flue opening and through opening, so that flue gas discharged into flue needs to pass through opening, transition cavity and flue opening to leak from flue, thereby improving the air tightness of flue.

[0008] Preferably, the shape of transition cavity is frame body, the frame opening edge of transition cavity is connected on the inner wall of flue, flue opening is completely in the range of frame opening, and through opening is formed on the bottom surface of transition cavity in the position opposite to flue opening.

[0009] Preferably, at least one flow guide hole is formed on the side surface of transition cavity, and when flue gas in flue passes through opening into transition cavity, flow guide hole can guide flue gas back into flue.

[0010] Preferably, flow guide fan is installed on flow guide hole, and when flow guide fan is started, flow guide fan generates suction force on flue gas by rotating, so as to extract flue gas from transition cavity.

[0011] Preferably, ventilation pipeline is connected with extractor hood, and flow guide fan is connected in series with extractor hood, and when extractor hood is started, flow guide fan is started simultaneously.

[0012] Preferably, the flue opening and the through opening are circular holes with the same diameter, the first sealing ring is bonded to the opening wall of the flue opening, and the second sealing ring is bonded to the opening wall of the through opening.

[0013] Preferably, the first sealing ring and the second sealing ring are both made of elastic material, the first sealing ring and the second sealing ring have the same diameter, and the diameter is just smaller than the diameter of the ventilation duct, so that the ventilation duct is in interference fit with the first sealing ring and the second sealing ring.

[0014] The embodiment also provides a flue, which comprises:

[0015] a flue body;

[0016] a flue opening formed on the flue body;

[0017] the flue closing structure is arranged on the flue opening.

[0018] The flue closing structure provided by the embodiment of the utility model, which comprises a first sealing ring arranged on the flue opening, a transition cavity arranged on the inner wall of the flue, the flue opening and the transition cavity being communicated, a through opening being formed on the transition cavity, and a second sealing ring being arranged on the through opening, wherein the ventilation duct passes through the flue opening and the through opening, so that the pipe body of the ventilation duct is simultaneously nested on the flue opening and the through opening; in the application, the flue gas discharged into the flue needs to pass through the through opening provided with the second sealing ring, the transition cavity and the flue opening provided with the first sealing ring to leak out of the flue, that is, the leakage of the flue gas is hindered in multiple layers, so that the air tightness of the flue is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 2 is a sectional view of the flue closing structure provided by the embodiment of the utility model;

[0020] Figure 2 Fig. 3 is a sectional view of the relationship between the flue closing structure and the ventilation duct provided by the embodiment of the utility model;

[0021] Figure 3 Fig. 4 is a schematic view of the flow guide hole of the flue closing structure provided by the embodiment of the utility model;

[0022] In the drawings: 1, flue; 11, flue opening; 2, transition cavity; 21, through opening; 22, flow guide hole; 23, flow guide fan; 3, ventilation duct. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model will be further described in detail below by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] like Figures 1-2 As shown, a flue 1 closing structure is provided in an embodiment of this utility model, which is disposed on the flue 1 opening of the flue 1. The flue 1 closing structure includes:

[0026] The first sealing ring is installed at the flue outlet 1;

[0027] The transition cavity 2 is set on the inner wall of the flue 1. The flue 1 opening is connected to the transition cavity 2. The transition cavity 2 has an opening 21, and a second sealing ring is set on the opening 21. The ventilation duct passes through the flue 1 opening and the opening 21, so that the duct body is nested on the flue 1 opening and the opening 21 at the same time. This ensures that the flue gas discharged into the flue 1 must pass through the opening 21, the transition cavity 2 and the flue 1 opening before it can leak out of the flue 1, thereby improving the airtightness of the flue 1.

[0028] In this embodiment, the transition cavity 2 is an independent cavity space set in the flue 1. By setting the transition cavity 2 at the opening of the flue 1, the flue gas in the flue 1 cannot leak directly from the opening of the flue 1. Instead, it needs to leak into the transition cavity 2 through the through hole first, and then leak out through the transition cavity 2 through the opening of the flue 1. This achieves a double restriction on the flue gas. In addition, both the through hole 21 and the opening of the flue 1 are equipped with sealing rings, which further increases the difficulty of flue gas leakage. This effectively prevents the leakage of flue gas and greatly improves the airtightness of the flue 1.

[0029] In a preferred embodiment, the transition cavity 2 is frame-shaped, with the edge of the frame opening of the transition cavity 2 connected to the inner wall of the flue 1, and the flue 1 opening completely within the frame opening range. The through-hole 21 is opened on the bottom surface of the transition cavity 2, directly opposite the flue 1 opening.

[0030] In this embodiment, the material of the transition cavity 2 is compatible with the material of the flue 1. For example, if the flue 1 is a concrete structure, the transition cavity 2 is built on the inner surface of the flue 1 by concrete masonry. If the flue 1 is made of other materials (such as steel), the transition cavity 2 can also be integrally formed using materials such as steel and tin foil, and then bonded to the inner surface of the flue 1 by an adhesive (such as resin). Furthermore, the opening 21 is directly opposite the opening of the flue 1. After the ventilation duct is inserted from the opening of the flue 1, it can be pushed forward to enter the opening 21, which facilitates the installation of the ventilation duct.

[0031] As a preferred embodiment, such as Figure 3 As shown, at least one guide hole 22 is provided on the side of the transition cavity 2. When the flue gas in the flue 1 enters the transition cavity 2 through the inlet 21, the guide hole 22 can guide the flue gas back into the flue 1.

[0032] A guide fan 23 is installed on the guide hole 22. After the guide fan 23 is started, the guide fan 23 generates suction force on the flue gas by rotating, thereby drawing the flue gas out of the transition cavity 2.

[0033] The ventilation duct is connected to the range hood, and the deflector fan 23 is connected in series with the range hood. When the range hood is started, the deflector fan 23 starts at the same time.

[0034] In this embodiment, by providing the guide hole 22, the flue gas that leaks into the transition cavity 2 in the flue 1 can be guided back into the flue 1 in a timely manner, further reducing the probability of flue gas leaking out of the transition cavity 2.

[0035] In this embodiment, by providing a guide fan 23 on the guide hole 22, the guiding force of the flue gas in the transition cavity 2 can be strengthened, thereby guiding more flue gas back into the flue 1, thus reducing the amount of flue gas that can leak out of the flue 1.

[0036] In this embodiment, when the range hood is started, it absorbs the smoke and discharges it into the flue 1 through the ventilation duct. Through the coordinated start-up design of the guide fan 23 and the range hood in this embodiment, the smoke that leaks into the transition cavity 2 when the range hood is working can be guided in a timely manner, ensuring its working effect.

[0037] In a preferred embodiment, the flue 1 opening and the through opening 21 are circular holes of the same diameter, the first sealing ring is bonded to the wall of the flue 1 opening, and the second sealing ring is bonded to the wall of the through opening 21.

[0038] Both the first and second sealing rings are made of elastic material; the first and second sealing rings have the same diameter, and this diameter is just smaller than the diameter of the ventilation duct, so that the ventilation duct is interference-fitted with the first and second sealing rings.

[0039] In this embodiment, the sealing ring can be made of a highly airtight elastic material such as rubber, polytetrafluoroethylene, or polyurethane. The diameter of the sealing ring is smaller than the diameter of the ventilation duct, so that the ventilation duct and the first and second sealing rings are interference-fitted, which can further improve the airtightness of the ventilation duct and the flue 1 opening and the through 21, thereby effectively limiting the leakage of flue gas from the flue 1.

[0040] This utility model provides a flue 1, the flue 1 comprising:

[0041] Main body of flue 1;

[0042] One flue opening is located on the main body of flue 1;

[0043] The aforementioned flue 1 inlet structure is installed at the flue 1 inlet.

[0044] In this embodiment, the transition cavity 2 of the flue 1's closing structure is an independent cavity space set in the flue 1. By setting the transition cavity 2 at the flue 1 opening, the flue gas in the flue 1 cannot leak directly from the flue 1 opening. Instead, it needs to leak into the transition cavity 2 through the through hole first, and then leak out through the transition cavity 2 through the flue 1 opening. This achieves a double restriction on the flue gas. Furthermore, both the through hole 21 and the flue 1 opening are equipped with sealing rings, further increasing the difficulty of flue gas leakage. This effectively prevents flue gas leakage and greatly improves the airtightness of the flue 1.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flue gas duct closing structure, disposed at the flue gas duct opening, characterized in that, The flue gas inlet structure includes: The first sealing ring is installed at the flue opening; A transition cavity is set on the inner wall of the flue. The flue opening is connected to the transition cavity. An opening is opened on the transition cavity, and a second sealing ring is installed on the opening. The ventilation duct passes through the flue opening and the opening, so that the duct body is nested in the flue opening and the opening at the same time. This ensures that the flue gas discharged into the flue must pass through the opening, the transition cavity, and the flue opening before it can leak out of the flue, thereby improving the airtightness of the flue.

2. The flue gas duct termination structure according to claim 1, characterized in that, The transition cavity is frame-shaped, with the edge of the frame connected to the inner wall of the flue. The flue opening is completely within the frame opening, and the passage is opened on the bottom surface of the transition cavity, directly opposite the flue opening.

3. The flue gas duct termination structure according to claim 2, characterized in that, At least one guide hole is provided on the side of the transition cavity. When the flue gas in the flue enters the transition cavity through the inlet, the guide hole can guide the flue gas back into the flue.

4. The flue gas duct termination structure according to claim 3, characterized in that, A guide fan is installed on the guide hole. After the guide fan is started, the guide fan generates suction force on the flue gas by rotating, thereby drawing the flue gas out of the transition chamber.

5. The flue gas duct termination structure according to claim 4, characterized in that, The ventilation duct is connected to the range hood, and the deflector fan is connected in series with the range hood. When the range hood is started, the deflector fan starts at the same time.

6. The flue gas duct termination structure according to claim 1, characterized in that, The flue opening and the through opening are round holes of the same diameter. The first sealing ring is bonded to the wall of the flue opening, and the second sealing ring is bonded to the wall of the through opening.

7. The flue gas duct termination structure according to claim 6, characterized in that, Both the first and second sealing rings are made of elastic material; the first and second sealing rings have the same diameter, and this diameter is just smaller than the diameter of the ventilation duct, so that the ventilation duct is interference-fitted with the first and second sealing rings.

8. A flue, characterized in that, The flue includes: Main body of the flue; The flue opening is located on the main body of the flue. The flue gas duct closing structure as described in any one of claims 1-7 is provided on the flue gas duct opening.

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