Variable-diameter smoke tube

Abstract

The utility model provides a variable-diameter smoke tube which comprises at least two first tube bodies and second tube bodies arranged on the peripheral sides of the first tube bodies in a sleeved mode, the diameters of the two first tube bodies are different, and each first tube body can independently stretch out of the second tube body through a sliding mechanism. Each first pipe body is provided with a sealing part, and the sealing parts are used for sealing the gaps between the two adjacent first pipe bodies or the gaps between the first pipe bodies and the second pipe bodies. By arranging the first pipe bodies with different diameters, the first pipe bodies independently extend out of the second pipe body to adapt to installation environments with different sizes, so that the diameter of the smoke pipe can be changed, the situation that the smoke pipe cannot be matched with an original smoke pipe during equipment model replacement is reduced, the application range of the smoke pipe is widened, and the universality of the smoke pipe is improved. In addition, by arranging the sealing parts, gaps between the first pipe bodies with different diameters and between the first pipe bodies and the second pipe bodies are prevented, and smoke is prevented from flowing backwards.

Description

Technical Field

[0001] This utility model specifically relates to a variable diameter flue. Background Technology

[0002] The flue pipe is a crucial component of a water heater, playing a key role in ensuring the safe emission of flue gas. Currently, conventional flue pipes are formed from a single piece of stainless steel sheet metal, and their diameter cannot be changed. Because the diameter of the flue pipe cannot be adjusted, when users purchase a new model for the first time or change models, they need to consider the installation location of room cabinets and other appliances, which presents some installation environment limitations. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defect that the outer diameter of the flue pipe in the prior art cannot be flexibly adjusted and adapted, and to provide a variable diameter flue pipe.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A variable diameter flue pipe, the variable diameter flue pipe comprising:

[0006] A first tube body and a second tube body sleeved on the outer periphery of the first tube body. There are at least two first tube bodies, and the diameters of the two first tube bodies are different. Each first tube body can extend out of the second tube body individually through a sliding mechanism. Each first tube body is provided with a sealing part, which is used to seal the gap between two adjacent first tube bodies or between the first tube body and the second tube body.

[0007] In this solution, multiple first pipes of different diameters are used, each extending independently from a second pipe, to adapt to different installation environments. This allows for variable flue pipe diameters, reducing the possibility of incompatibility when users change equipment models, thus improving the flue pipe's applicability and versatility. Furthermore, a sealing element prevents gaps between the different diameter first pipes and between the first and second pipes, avoiding backflow of flue gas and enhancing the user experience.

[0008] Preferably, the sliding mechanism includes a fixing part and a slide rail. The fixing part protrudes from the inner wall of the second tube body, and the slide rail is disposed on the outer surface of the first tube body and extends along the axial direction of the first tube body. The slide rail extends to the first end of the first tube body, and the fixing part extends into the slide rail from the first end.

[0009] In this scheme, the above settings are used to allow the first tube to extend independently out of the second tube.

[0010] Preferably, the slide rail penetrates the inner wall of the first tube.

[0011] In this solution, the weight of the first tube is further reduced by the above-mentioned settings, thereby reducing the weight of the smoke tube composed of multiple first tubes and second tubes, that is, reducing the weight of the smoke tube.

[0012] Preferably, the fixing part includes at least one, which protrudes from the inner wall of the second tube and extends to the axis of the second tube.

[0013] In this solution, by increasing the size of the fixing part, the fixing part can be inserted into the slide rails of multiple first tubes, that is, the second tube can simultaneously accommodate and individually extend multiple first tubes, and the diameters of the multiple first tubes are different, so as to further improve the applicability of the variable diameter of the flue.

[0014] Preferably, four fixing parts are provided, and the four fixing parts are connected from the axis of the second tube to form a whole. Adjacent fixing parts are arranged perpendicular to each other, and four slide rails are also provided corresponding to the fixing parts.

[0015] In this design, the stability of the first tube extending from the second tube is improved by increasing the number of fixing parts and slide rails. Furthermore, the four fixing parts form a single unit along the axis of the second tube, which can also divert the airflow within the second tube to prevent excessively fast airflow from causing turbulence and reduce noise within the flue.

[0016] Preferably, the slide rail extends along the axial direction of the first tube and the end point of the slide rail is spaced apart from the second end of the first tube.

[0017] In this solution, the above settings limit the stroke of the first tube extending out of the second tube, thus preventing the first tube from detaching from the second tube when the slide rail extends to the second end of the first tube.

[0018] Preferably, the sealing part is an annular plate connected to the outer surface of the first tube and extending outward away from the axis of the first tube.

[0019] In this solution, the above-mentioned settings are used to seal the gaps between two adjacent first pipe bodies and between the first and second pipe bodies, thereby preventing backflow of flue gas.

[0020] Preferably, the slide rail is further provided with a transition groove, which is located near the first end. The transition groove has multiple stepped grooves arranged parallel to the direction of the slide rail, and the depths of adjacent stepped grooves are different.

[0021] In this design, a transition groove is provided to limit the first tube body when it does not need to extend, by engaging the fixing part within the transition groove, thus preventing it from extending into the second tube body and allowing other first tube bodies of suitable diameter to extend into the second tube body. Furthermore, the varying depths of the multiple stepped grooves allow for adjustment of the distance the first tube body retracts into the second tube body, preventing interference with other structures when the first tube body is not extended into the second tube body.

[0022] Preferably, the variable diameter flue further includes a third tube body, which is connected to the end of the second tube body away from the first tube body, and a bend is provided between the two ends of the third tube body.

[0023] In this solution, the above-mentioned settings enable the bending of the flue pipe through a bending section. Compared with existing stainless steel sheet metal flue pipes, the method of bending the third pipe body increases the installation range of the flue pipe and enriches the installation scenarios of the flue pipe.

[0024] Preferably, the bent portion is a corrugated flexible hose.

[0025] In this solution, the above settings are used to achieve smooth bending of the bending section.

[0026] The positive and progressive effects of this utility model are as follows: By setting multiple first tubes of different diameters, each extending independently from a second tube, it adapts to different installation environments, allowing for variable flue diameters. This reduces the possibility of incompatibility when users change equipment models, thus improving the flue's applicability and versatility. Furthermore, the inclusion of a sealing section prevents gaps between the different diameter first tubes and between the first and second tubes, avoiding backflow of flue gas and enhancing the user experience. Attached Figure Description

[0027] Figure 1 This is a perspective view of a variable diameter flue pipe according to a preferred embodiment of the present invention.

[0028] Figure 2 This diagram shows the positional relationship between the first tube and the second tube in a preferred embodiment of the present invention.

[0029] Figure 3 This is an exploded view of the structure of a variable diameter flue pipe according to a preferred embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100mm variable diameter flue

[0032] First tube body 10

[0033] Sealing part 11

[0034] Second tube body 20

[0035] Sliding Mechanism 1

[0036] Fixing part 2

[0037] Slide rail 3

[0038] Transition groove 31

[0039] Step groove 311

[0040] Third tube body 30

[0041] Bending part 4 Detailed Implementation

[0042] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0043] This embodiment provides a variable diameter flue pipe 100, the specific structure of which is as follows: Figure 1 , Figure 2 and Figure 3 As shown, the variable diameter flue 100 includes a first tube body 10 and a second tube body 20 sleeved on the outer periphery of the first tube body 10. There are at least two first tube bodies 10, and the diameters of the two first tube bodies 10 are different. Each first tube body 10 can extend out of the second tube body 20 individually through the sliding mechanism 1. Each first tube body 10 is provided with a sealing part 11, which is used to seal the gap between two adjacent first tube bodies 10 or between the first tube body 10 and the second tube body 20.

[0044] Specifically, both the first tube 10 and the second tube 20 are cylindrical tubes. At least two first tubes 10 are provided, and the diameters of the two first tubes 10 are different. The second tube 20 is fitted onto the outer periphery of the first tube 10, and the diameter of the second tube 20 is larger than the diameter of the first tube 10. The first tube 10 and the second tube 20 are slidably connected by a sliding mechanism 1, and adjacent first tubes 10 are also slidably connected by the sliding mechanism 1. The first tube 10 can extend independently beyond the second tube 20 through the sliding mechanism 1, thus achieving a change in the diameter of the flue pipe when the diameter of the extended first tube 10 is different. This adapts to different installation environments, reducing the possibility of incompatibility when users change equipment models, and improving the applicability and versatility of the flue pipe. The sliding mechanism 1 can be a slider and groove combination structure as in the prior art, or it can be the result of a rolling wheel driving the movement of the first tube 10.

[0045] In addition, a sealing part 11 is provided on the first pipe body 10. The sealing part 11 is used to seal the gap between two adjacent first pipe bodies 10 or between the first pipe body 10 and the second pipe body 20, so as to prevent gaps between first pipe bodies 10 with different diameters, and between the first pipe body 10 and the second pipe body 20, thereby avoiding backflow of flue gas and improving the user experience. The sealing part 11 can be a rubber part or a silicone part in the prior art.

[0046] In this embodiment, the sliding mechanism 1 includes a fixing part 2 and a slide rail 3. The fixing part 2 protrudes from the inner wall of the second tube 20. The slide rail 3 is disposed on the outer surface of the first tube 10 and extends along the axial direction of the first tube 10. The slide rail 3 extends to the first end of the first tube 10. The fixing part 2 extends into the slide rail 3 from the first end.

[0047] Specifically, the outer surface of the first tube 10 is provided with a slide rail 3, into which the fixing part 2 can extend. The fixing part 2 is a rod or a flat plate. The fixing part 2 is disposed on the inner wall of the second tube 20 near its end. When the first tube 10 extends out of the second tube 20, the fixing part 2 can move in the slide rail 3 by moving the first tube 10, thereby realizing the sliding of the first tube 10 relative to the second tube 20 and its extension out of the second tube 20. It can be understood that when the first tube 10 is installed into the second tube 20, the fixing part 2 is simply engaged by the slide rail 3 extending to the first end of the first tube 10. Similarly, when disassembling the first tube 10, it is only necessary to push the first tube 10 from the first end toward the second end, and the fixing part 2 extends out of the slide rail 3 from the first end of the first tube 10.

[0048] In this embodiment, the slide rail 3 penetrates the inner wall of the first tube 10. This allows the fixing part 2 to extend into the slide rail 3 of one of the multiple first tubes 10 and then further into the slide rail 3 of another first tube 10. That is, the fixing part 2 can simultaneously extend into the slide rails 3 of multiple first tubes 10. When installing the flue with varying diameters, this allows multiple first tubes 10 to extend out of the second tube 20 individually, while the remaining first tubes 10 that do not need to extend out of the second tube 20 remain unaffected. Furthermore, the slide rail 3 penetrating the first tube 10 further reduces the weight of the first tube 10, thereby reducing the weight of the flue composed of multiple first tubes 10 and second tubes 20, effectively reducing the weight of the flue.

[0049] In this embodiment, the fixing part 2 includes at least one part, which protrudes from the inner wall of the second tube 20 and extends to the axis of the second tube 20. By increasing the size of the fixing part 2, it can extend into the slide rails 3 of multiple first tubes 10, that is, multiple first tubes 10 can be simultaneously accommodated and individually extended within the second tube 20, and the diameters of the multiple first tubes 10 are different, thereby further improving the applicability of the variable diameter flue. For example, the fixing part 2 extending to the axis of the second tube 20 can simultaneously extend into the slide rails 3 of four first tubes 10, that is, the second tube 20 can simultaneously accommodate four first tubes 10 with different diameters.

[0050] In this embodiment, four fixing parts 2 are provided. The four fixing parts 2 are connected from the axis of the second tube body 20 to form a whole. Adjacent fixing parts 2 are arranged perpendicular to each other. The slide rail 3 is also provided with four fixing parts 2.

[0051] Specifically, the four fixing parts 2 are connected at the axis of the second tube 20 to form a whole. From the outside, the four fixing parts 2 are two rods that pass through the axis of the second tube 20 and are perpendicular to it. Each rod has the same diameter as the second tube 20. Corresponding to the four fixing parts 2, four slide rails 3 are provided on each first tube 10. The four fixing parts 2 extend into the four slide rails 3 respectively. By increasing the number of fixing parts 2 and slide rails 3, the stability of the first tube 10 when it extends out of the second tube 20 is improved.

[0052] In addition, it is understandable that the four fixing parts 2 form a whole at the axis of the second tube 20, which can also divert the airflow in the second tube 20 to avoid the airflow velocity being too fast and generating turbulence, and reduce the noise in the flue.

[0053] In this embodiment, the slide rail 3 extends along the axial direction of the first tube 10, and the end point of the slide rail 3 is spaced apart from the second end of the first tube 10. This limits the stroke of the first tube 10 extending out of the second tube 20, preventing the first tube 10 from detaching from the second tube 20 when the slide rail 3 extends to the second end of the first tube 10.

[0054] In this embodiment, the sealing part 11 is an annular plate connected to the outer surface of the first tube 10 and extending outward away from the axis of the first tube 10.

[0055] Specifically, the sealing part 11 is an annular plate and is sleeved on the outer surface of the first pipe body 10. The sealing part 11 extends outward along an axis away from the first pipe body 10. The two ends of the sealing part 11 are attached to the inner wall of the first pipe body 10 or the second pipe body 20. The sealing part 11 has a trumpet-shaped structure in appearance, so as to seal the gap between two adjacent first pipe bodies 10 and between the first pipe body 10 and the second pipe body 20, and prevent backflow of flue gas.

[0056] It should be noted that, regardless of whether the first tube 10 extends out of the second tube 20 or is located inside the second tube 20, the end of the sealing part 11 is always attached to the inner wall of the first tube 10 or the second tube 20, thereby always maintaining a gap seal.

[0057] In this embodiment, the slide rail 3 is also provided with a transition groove 31. The transition groove 31 is located near the first end. Multiple stepped grooves 311 are provided in the transition groove 31 along the direction parallel to the slide rail 3. The depths of adjacent stepped grooves 311 are different.

[0058] Specifically, the transition groove 31 is a rectangular groove located near the first end of the first tube 10. By providing the transition groove 31, the first tube 10 is limited by engaging the fixing part 2 into the transition groove 31 when it does not need to extend, preventing it from extending into the second tube 20, and allowing other first tubes 10 of suitable diameter to extend into the second tube 20. Multiple stepped grooves 311 are provided within the transition groove 31 along the direction parallel to the slide rail 3. The multiple stepped grooves 311 have different depths, so that when multiple first tubes 10 are located within the second tube 20, the stepped grooves 311 of different depths on each first tube 10 are engaged by the fixing part 2, forming a stepped arrangement of multiple first tubes 10. The different depths of the multiple stepped grooves 311 also allow for adjustment of the distance the first tube 10 retracts into the second tube 20, preventing interference with other structures when the first tube 10 is not extended into the second tube 20.

[0059] When using the pipe body 10 with the smallest diameter, simply rotate the pipe body 10 with the smallest diameter from the transition groove 31 to the slide rail 3, so that the fixing part slides along the slide rail 3 and the pipe body 10 extends to its longest position. The pipe bodies 10 with other diameters are rotated in sequence and arranged in a stepped manner according to the stepped grooves 311 of different depths. The gap is sealed by the sealing part on the pipe body 10 to prevent backflow of flue gas. When the pipe body 10 with the median diameter is selected, rotate the selected pipe body 10 from the transition groove 31 to the slide rail 3 and extend it to its longest position. The position of the pipe body 10 with a smaller diameter remains unchanged. Simply arrange the pipe body 10 with a larger diameter and the extended pipe body 10 in a stepped manner to prevent backflow of flue gas.

[0060] In this embodiment, the variable diameter flue also includes a third tube body 30, which is connected to the end of the second tube body 20 away from the first tube body 10. A bending portion 4 is provided between the two ends of the third tube body 30. The bending portion 4 enables the flue to bend. Compared with existing stainless steel sheet metal flue bodies, bending the third tube body 30 increases the installation range of the flue and enriches the installation scenarios of the flue.

[0061] Furthermore, the bending section 4 is a corrugated flexible hose. The corrugated flexible hose is made by pre-bending stainless steel sheet metal into a corrugated shape and then forming it into a cylindrical structure, i.e., a chimney shape, in the existing technology. This gives it a certain degree of plasticity and strength, enabling it to meet installation requirements at different angles and load requirements, thus allowing the bending section 4 to bend smoothly.

[0062] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A variable diameter flue pipe, characterized in that, The variable diameter flue includes: A first tube body and a second tube body sleeved on the outer periphery of the first tube body. There are at least two first tube bodies, and the diameters of the two first tube bodies are different. Each first tube body can extend out of the second tube body individually through a sliding mechanism. Each first tube body is provided with a sealing part, which is used to seal the gap between two adjacent first tube bodies or between the first tube body and the second tube body.

2. The variable diameter flue pipe as described in claim 1, characterized in that, The sliding mechanism includes a fixing part and a slide rail. The fixing part protrudes from the inner wall of the second tube body. The slide rail is disposed on the outer surface of the first tube body and extends along the axial direction of the first tube body. The slide rail extends to the first end of the first tube body, and the fixing part extends into the slide rail from the first end.

3. The variable diameter flue pipe as described in claim 2, characterized in that, The slide rail penetrates the inner wall of the first tube.

4. The variable diameter flue pipe as described in claim 3, characterized in that, The fixing part includes at least one, which protrudes from the inner wall of the second tube and extends to the axis of the second tube.

5. The variable diameter flue pipe as described in claim 4, characterized in that, The fixing part is provided in four parts, which are connected from the axis of the second tube to form a whole. The two adjacent fixing parts are arranged perpendicular to each other. The slide rail is also provided in four parts corresponding to the fixing parts.

6. The variable diameter flue pipe as described in claim 5, characterized in that, The slide rail extends along the axial direction of the first tube body, and the end point of the slide rail is spaced apart from the second end of the first tube body.

7. The variable diameter flue pipe as described in claim 1, characterized in that, The sealing part is an annular plate connected to the outer surface of the first tube and extending outward away from the axis of the first tube.

8. The variable diameter flue pipe as described in claim 2, characterized in that, The slide rail is also provided with a transition groove, which is located near the first end. Multiple stepped grooves are provided in the transition groove along the direction parallel to the slide rail, and the depths of adjacent stepped grooves are different.

9. The variable diameter flue pipe as described in claim 1, characterized in that, The variable diameter flue also includes a third tube body, which is connected to the end of the second tube body away from the first tube body, and a bend is provided between the two ends of the third tube body.

10. The variable diameter flue pipe as described in claim 9, characterized in that, The bent section is a corrugated flexible hose.

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