Ventilation duct transition pipe structure

Abstract

A connecting pipe structure for a ventilation duct mainly includes two pipe bodies and a connecting pipe connecting the two pipe bodies. Each of the two pipe bodies has a receiving port at one end and a receiving port at the other end. The receiving port extends obliquely from one side of the pipe body to the other side. The connecting pipe has adapters at both ends, one side of which is a rounded portion at an appropriate angle. The adapters at both ends extend obliquely from the rounded portion to the other side, forming a tapered end, making the connecting pipe roughly fan-shaped. Each adapter has an annular flange and a recessed fitting portion. This allows the two pipe bodies to be fitted and fitted into the adapters of the connecting pipe through the receiving ports. The two pipe bodies can be rotated and adjusted at different angles along the connecting pipe according to the needs of the construction site, allowing the ventilation duct to be connected through the receiving port. This makes the construction of the ventilation duct more convenient and faster, and the rounded portion prevents the attenuation of ventilation efficiency, thus ensuring smooth ventilation.

Description

[Technical Field]

[0001] The present invention relates to a connecting pipe structure for a ventilation duct, and more particularly to a connecting pipe structure that can be rotated and adjusted to different angles for connecting ventilation ducts, making the construction of ventilation ducts more convenient and faster, and maintaining smooth ventilation. [Previous Technology]

[0002] Note: When connecting ventilation ducts in range hoods or ventilation equipment at bends, construction workers typically bring the ends of the two ventilation ducts together and connect them with a bend, then wrap the connection with tape. This method is not only cumbersome but also makes it difficult to achieve an airtight seal. Especially when the construction site is too narrow, it causes further inconvenience to the workers. Furthermore, the tape-wrapped connection may come loose or detach after a period of use, significantly reducing the overall ventilation effect. Moreover, bends used for connections are usually set at fixed angles, such as 45 degrees or 90 degrees. When the construction site requires a bend at other angles, it often causes inconvenience to the construction workers, affecting construction efficiency and resulting in a less secure connection, leading to future detachment or air leakage. This situation definitely needs effective improvement.

[0003] Furthermore, conventional bends often do not take into account the impact of the bend angle on ventilation. Therefore, the wind passing through the bend will be obstructed and turn back, forming turbulence at the bend. This not only affects the efficiency of ventilation, but may also cause smoke or the air to be discharged to flow back, thus losing the original function of the ventilation duct.

[0004] In view of this, the applicant, through continuous research and experimentation, came up with the idea of ​​designing a transition pipe structure for ventilation pipes, so that the transition section of the ventilation pipe can be rotated and adjusted to different angles, thereby making the construction of ventilation pipes more convenient and faster, without affecting ventilation efficiency. [Summary of the Invention]

[0005] The main objective of this invention is to provide a connecting pipe structure for ventilation pipes, which allows for rotational adjustment of different angles to allow for connection of ventilation pipes from the receiving port, making the connection and construction of ventilation pipes more convenient and quick, maintaining smooth ventilation, and making the connected ventilation pipes more secure, preventing improper detachment or loosening.

[0006] The aforementioned ventilation duct adapter structure includes two pipe bodies and a connecting pipe connecting the two pipe bodies. Each of the two pipe bodies has a receiving port at one end and a receiving port at the other end. The receiving port extends obliquely from one side of the pipe body to the other side. The connecting pipe has adapters at both ends, one side of which is a rounded portion at an appropriate angle. The adapters at both ends extend obliquely from the rounded portion to the other side to form a tapered end, making the connecting pipe roughly fan-shaped. The adapters at both ends each have an annular flange and a recessed fitting portion. This allows the two pipe bodies to be fitted into the adapters of the connecting pipe through the receiving ports, enabling the two pipe bodies to be rotated and adjusted at different angles along the connecting pipe according to the needs of the construction site, allowing the ventilation duct to be connected through the receiving port. This makes the construction of the ventilation duct more convenient and faster, and the rounded portion prevents the attenuation of ventilation efficiency, thus ensuring smooth ventilation.

[0007] In the aforementioned ventilation duct adapter structure, the adapters at both ends of the connecting pipe are respectively provided with annular walls and inset portions that taper inward from the edges of the walls.

[0008] In the aforementioned ventilation duct adapter structure, the upper edge of the connecting pipe has an inclined surface from top to bottom, which facilitates the accommodation of the two pipes and the fitting of the connecting pipe adapter.

[0009] In the aforementioned connecting pipe structure for ventilation ducts, the receiving opening of the pipe body is provided with a first oblique cutting hole cut from the opening edge towards the pipe body at an appropriate position; the fitting portion of the connecting pipe is provided with a second oblique cutting hole cut from top to bottom at an appropriate position; and the first cutting hole and the second cutting hole are oblique cuts in different directions. This allows for a smoother and more effortless fitting when the pipe body is fitted onto the connecting pipe via the first and second cutting holes.

Implementation Method

[0011] Please refer to Figures 1 and 2 simultaneously, which are exploded perspective and structural diagrams of the present invention. As shown in the figures, the present invention includes two pipe bodies 1 and a connecting pipe 2 connecting the two pipe bodies 1. Each of the two pipe bodies 1 has a receiving port 11 at one end and a receiving port 12 at the other end. The receiving port 11 extends obliquely from one side of the pipe body 1 to the other side. In this embodiment, the diameter of the receiving port 11 of the two pipe bodies 1 is slightly larger than the diameter of the two pipe bodies 1.

[0012] The two ends of the connecting pipe 2 are respectively provided with adapters 21, one side of which is provided with an arc portion 22 at an appropriate angle. The adapters 21 at both ends extend obliquely from the arc portion 22 to the other side to form a tapered end 23, so that the connecting pipe 2 is generally fan-shaped. The adapters 21 at both ends are respectively provided with annular wall portions 24 and inset portions 25 that taper inward from the edge of the wall portions 24. In this embodiment, the connecting pipe 2 is provided with an angle of about 50 degrees, and the tapered end 23 is generally arc-shaped and concave.

[0013] By combining the aforementioned components, a connecting pipe for ventilation ducts is constructed. The two pipe bodies 1 are fitted and fitted into the adapter 21 of the connecting pipe 2 via the receiving port 11, allowing the two pipe bodies 1 to rotate and adjust at different angles along the connecting pipe 2 according to the needs of the construction site. This allows for the connection of ventilation ducts through the receiving ports 12 of the two pipe bodies 1, making the construction of the ventilation ducts more convenient and faster, and ensuring a more secure connection, preventing improper detachment or loosening. Furthermore, the arc portion 22 prevents the attenuation of ventilation efficiency, thereby maintaining smooth ventilation.

[0014] Please refer to Figure 3, which is a perspective view of the connecting pipe adapter of the present invention. As shown in the figure, the embedding part 25 of the connecting pipe 2 of the present invention is a wall that is recessed from the wall part 24 and extends upward. Its upper edge is provided with a slope 251 from top to bottom. The slope 251 is used to facilitate the fitting and engagement of the receiving opening 11 of the two pipe bodies 1 and the connecting pipe 2 adapter 21.

[0015] Please refer to Figure 4, which is a perspective view of the connecting pipe adapter and the pipe body receiving port of the present invention. As shown in the figure, the receiving port 11 of the pipe body 1 of the present invention is provided with a first slit hole 111 cut from the opening edge toward the pipe body 1 at an appropriate position, and is oblique in shape; the fitting part 25 of the connecting pipe 2 is provided with a second slit hole 252 cut from top to bottom at an appropriate position, and is oblique in shape; and the first slit hole 111 and the second slit hole 252 are oblique cuts in different directions. So that when the pipe body 1 is fitted onto the connecting pipe 2, the fitting can be smoother by the mutual fitting of the first slit hole 111 and the second slit hole 252. Furthermore, because the first slit hole 111 and the second slit hole 252 give the receiving port 11 of the pipe body 1 and the embedding part 25 of the connecting pipe 2 appropriate elasticity, the receiving port 11 of the pipe body 1 can be slightly expanded during fitting, while the embedding part 25 of the connecting pipe 2 is slightly retracted, thereby making the assembly more labor-saving and improving construction efficiency.

[0016] Please refer to Figure 5, which is a diagram of the first embodiment of the present invention. As shown in the figure, when using the present invention, the assembled pipe body 1 can be rotated at various angles along the connecting pipe 2 according to the construction site requirements of the ventilation pipe. In this embodiment, the two pipe bodies 1 are rotated to a horizontal and a vertical position respectively with the two ends of the connecting pipe 2 as fulcrums, so that the entire connecting pipe forms a bending angle of about 90 degrees, so that the ventilation pipes 3 can be connected to the receiving ports 12 of the two pipe bodies 1 respectively, making the construction of the ventilation pipe more convenient and faster, and making the connected ventilation pipes 3 more solid to prevent improper detachment or loosening.

[0017] In use, the aforementioned invention features a 90-degree bend in the adapter pipe 2. However, since one side of the adapter pipe 2 is designed as an arc section 22, smoke or air passing through the adapter pipe 2 will travel along the arc section 22 and turn smoothly, without being obstructed by direct impact and causing a backflow, thus preventing turbulence at the turning point. Therefore, the invention not only does not affect the ventilation efficiency but also prevents smoke or exhaust air from flowing back, thereby maintaining the existing smooth function of the ventilation duct 3.

[0018] Please refer to Figure 6, which is a diagram of the second embodiment of the present invention. As shown in the figure, when using the present invention, the assembled pipe body 1 can be rotated along the connecting pipe 2 at various angles according to the construction site requirements of the ventilation pipe. For example, in this embodiment, when a smaller angle adapter pipe is required at the construction site, the two pipe bodies 1 are rotated with the two ends of the connecting pipe 2 as fulcrums respectively, so that the entire adapter pipe forms a smaller bending angle of about 75 degrees, so that the ventilation pipe 3 can be connected by the receiving ports 12 of the two pipe bodies 1 respectively, making the construction of the ventilation pipe 3 more convenient and faster, and making the connected ventilation pipe 3 more solid, so as to prevent improper detachment or loosening. Similarly, the smoke or air passing through the adapter pipe 2 will turn smoothly along the arc portion 22 of the smaller bending angle of 75 degrees, without affecting the ventilation efficiency, thereby maintaining the existing smooth function of the ventilation pipe 3.

[0019] Please refer to Figure 7, which is a diagram of the third embodiment of the present invention. As shown in the figure, when using the present invention, the assembled pipe body 1 can be rotated along the connecting pipe 2 at various angles according to the construction site requirements of the ventilation pipe. For example, in this embodiment, when a larger angle adapter pipe is required at the construction site, the two pipe bodies 1 are rotated with the two ends of the connecting pipe 2 as fulcrums respectively, so that the entire adapter pipe forms a large bending angle of about 120 degrees, so that the ventilation pipe 3 can be connected by the receiving ports 12 of the two pipe bodies 1 respectively, making the construction of the ventilation pipe more convenient and faster, and making the connected ventilation pipe 3 more solid, so as to prevent improper detachment or loosening. Similarly, the smoke or air passing through the adapter pipe will turn smoothly along the arc portion 22 of the large bending angle of 120 degrees, without affecting the ventilation efficiency, thereby maintaining the existing smooth function of the ventilation pipe 3.

[0020] In addition, as shown in Figure 2, when a straight transition pipe is required at the construction site, the two pipe bodies 1 can be rotated with the two ends of the connecting pipe 2 as fulcrums to make the entire transition pipe form a straight 0-degree angle state, so that the ventilation pipe 3 can be connected by the receiving ports 12 of the two pipe bodies 1 respectively. This makes the construction of the ventilation pipe 3 more convenient and faster, and makes the connected ventilation pipe 3 more solid to prevent improper detachment or loosening, and can maintain the existing smooth function of the ventilation pipe 3.

[0021] The foregoing embodiments are merely illustrative of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any minor modifications or alterations will not deviate from the essence of the present invention and will not depart from the spirit of the present invention.

[0022] In summary, this invention uses a pipe body extending obliquely on both sides, combined with a connecting pipe having an interface and an arc-shaped portion, forming a fan-shaped connecting pipe structure for ventilation pipes. By rotating and adjusting the connecting pipe at different angles to connect ventilation pipes, the construction of ventilation pipes becomes more convenient and faster, and the connected ventilation pipes are more secure, preventing improper detachment or loosening, and maintaining smooth ventilation efficiency. This is a practical design and a truly novel creation; therefore, a patent application is filed in accordance with the law. We respectfully request that the Bureau examine the application and grant the patent as soon as possible. [Simplified Explanation of the Diagram]

[0010] Figure 1 is an exploded perspective view of the present invention. Figure 2 is a structural diagram of the present invention. Figure 3 is a perspective view of the connecting pipe adapter of the present invention. Figure 4 is a perspective view of the connecting pipe adapter and pipe body receiving port of the present invention. Figure 5 is a diagram of the first usage embodiment of the present invention. Figure 6 is a diagram of the second usage embodiment of the present invention. Figure 7 is a diagram of the third usage embodiment of the present invention.

Claims

1. A connecting pipe structure for a ventilation duct, comprising: two pipe bodies, one end of which is provided with a receiving port and the other end with a receiving port, the receiving port extending obliquely from one side of the pipe body to the other side; a connecting pipe, each end of which is provided with a connecting interface, one side of which is provided with an arc portion, the connecting interfaces at both ends extending obliquely from the arc portion to the other side to form a tapered end, making the connecting pipe generally fan-shaped, the connecting interfaces at both ends respectively provided with annular walls and a recessed portion extending inward from the edge of the walls; by means of the connecting interfaces respectively fitting into the receiving ports of the pipe bodies, the pipe bodies can be rotated and adjusted to different angles according to the needs of the construction site along the connecting pipe.

2. The connecting pipe structure for a ventilation duct as described in claim 1, wherein, The embedded part of the adapter at both ends of the connecting pipe is a wall-shaped part that extends upward from the edge of the wall.

3. The connecting pipe structure for a ventilation duct as described in claim 1, wherein, The upper edge of the fitting portion of the connecting tube has a slope from top to bottom, which facilitates the fitting and engagement of the receiving port of the tube body with the adapter of the connecting tube.

4. The connecting pipe structure for a ventilation duct as described in claim 2, wherein, The receiving opening of the tube body is provided with a first oblique cutting hole cut from the opening edge into the tube body; the inserting part of the connecting tube is provided with a second oblique cutting hole cut from top to bottom; and the first cutting hole and the second cutting hole are oblique cuts in different directions to form appropriate elasticity; so that when the tube body is fitted onto the connecting tube, the fitting can be smoother and less strenuous by means of the first cutting hole and the second cutting hole.

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