Low-resistance high-induction exhaust device

Abstract

The utility model relates to a low-resistance high-induction exhaust device. Comprising a flow guide pipe and a gas inlet pipe, the upper end of the gas inlet pipe is connected with the middle of the flow guide pipe, the center line of the gas inlet pipe and the center line of the flow guide pipe intersect and form an acute included angle, a smoke flow guide plate is installed on the inner wall of an upper end opening of the flow guide pipe and enables an upper end outlet of the flow guide pipe to be gradually necked down, and the lower end of the flow guide pipe is sealed through a bottom shell. A mounting flange is further arranged at the lower end of the air inlet pipe. The low-resistance high-induction exhaust device is low in resistance to smoke, provides a high-induction exhaust effect for the smoke, improves the exhaust efficiency of the smoke, and meanwhile has the advantage of being convenient to install and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of exhaust devices, and in particular relates to a low-resistance and high-induction exhaust device. Background Art

[0002] Exhaust devices are often used in the construction field. They can also be called exhaust guide pipes. They are used to be installed on the top of the building's smoke exhaust channel to exhaust smoke. Of course, they can also be used in other technical fields involving smoke exhaust / exhaust. The key points of the exhaust device's structural design are to improve the efficiency of smoke exhaust by reducing the resistance of smoke flow, and to further improve the efficiency of smoke exhaust by applying a certain air extraction effect to the smoke. At the same time, the exhaust device should have the characteristics of being easy to install and use.

[0003] The existing exhaust device is limited in structural design, has a large resistance to smoke and cannot exert an effective exhaust induction effect on smoke, resulting in unsatisfactory smoke exhaust efficiency. It is necessary to optimize the structure of the exhaust device to improve the working characteristics of the exhaust device. Utility Model Content

[0004] The purpose of the utility model is to provide a low-resistance and high-induction exhaust device, which has low resistance to smoke and provides a high-induction exhaust effect on the smoke, thereby improving the exhaust efficiency of the smoke, and has the characteristics of being easy to install and use.

[0005] The technical solution adopted by the utility model is: a low-resistance and high-induction exhaust device, including a guide pipe and an intake pipe, the upper end of the intake pipe is connected to the middle of the guide pipe, the center lines of the intake pipe and the guide pipe intersect and have an acute angle, a smoke guide plate is installed on the inner wall of the upper port of the guide pipe, the smoke guide plate makes the upper end outlet of the guide pipe gradually shrink, the lower end of the guide pipe is closed by a bottom shell, and a mounting flange is also provided at the lower end of the intake pipe.

[0006] Preferably, the upper end of the guide pipe has a bevel, and the acute angle between the bevel plane and the vertical direction is 60°. The smoke guide plate is located on the same side of the air inlet pipe and its bottom edge is continuously welded to the inner wall of the guide pipe, and the top edge of the smoke guide plate is flush with the bevel plane.

[0007] Preferably, the bottom of the bottom shell is in a spherical shape protruding downward, and a bottom shell constriction is provided on the top of the bottom shell. The bottom shell constriction is upwardly embedded in the bottom port of the guide tube and is continuously welded and connected.

[0008] Preferably, a flange interface inclined upward is provided on the side of the mounting flange, and the lower end of the air inlet pipe has an inlet neck, which is embedded in the flange interface and continuously welded.

[0009] Preferably, a positioning protrusion is provided at the inner bottom of the flange interface, and a positioning notch is provided at the bottom of the inlet necking, and when the flange interface is engaged with the inlet necking, the positioning protrusion is embedded in the positioning notch.

[0010] Preferably, the mounting surface of the mounting flange is parallel to the axial direction of the flow guide pipe.

[0011] Preferably, the acute angle between the center lines of the air inlet pipe and the guide pipe is 30°.

[0012] The advantages and positive effects of the utility model are:

[0013] The utility model provides a low-resistance and high-induction exhaust device with a reasonable structural design. Compared with the existing exhaust device, the exhaust device in the utility model provides a channel for smoke to be discharged by setting an intake pipe and a guide pipe that intersect obliquely. Since there is an acute angle between the center lines of the intake pipe and the guide pipe, the exhaust device has less resistance to the smoke, which is more conducive to the rapid discharge of the smoke. By installing a smoke guide plate inside the port of the guide pipe, the port of the guide pipe is made into a gradually tapered structure, which increases the smoke flow rate and plays a jet role, achieving a high-induction exhaust effect on the smoke, which increases the exhaust efficiency of the smoke. At the same time, by setting a mounting flange, the low-resistance and high-induction exhaust device is easy to install and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0015] Figure 2 yes Figure 1 Schematic diagram of the structure of the central guide pipe, the air inlet pipe and the smoke guide plate;

[0016] Figure 3 yes Figure 1 A schematic diagram of the longitudinal cross-section structure of the mid-bottom shell;

[0017] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the mounting flange;

[0018] Figure 5 yes Figure 1 Schematic diagram of the longitudinal section structure of the mounting flange.

[0019] In the figure:

[0020] 1. Guide pipe; 2. Smoke guide plate; 3. Inlet pipe; 3-1. Inlet necking; 3-2. Positioning notch; 4. Bottom shell; 4-1. Bottom shell necking; 5. Mounting flange; 5-1. Flange interface; 5-2. Positioning protrusion. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

[0022] See also Figure 1 and Figure 2 The low-resistance high-induction exhaust device of the utility model comprises a guide pipe 1 and an intake pipe 3. The upper end of the intake pipe 3 is connected to the middle of the guide pipe 1. The center lines of the intake pipe 3 and the guide pipe 1 intersect and have an acute angle. In this embodiment, the acute angle between the center lines of the intake pipe 3 and the guide pipe 1 is 30°. The smoke enters the interior through the intake pipe 3, then transfers to the guide pipe 1, flows upward along the guide pipe 1, and is finally discharged from the upper port of the guide pipe 1.

[0023] A smoke guide plate 2 is installed on the inner wall of the upper port of the guide pipe 1, and the smoke guide plate 2 gradually narrows the upper outlet of the guide pipe 1. In this embodiment, the upper end of the guide pipe 1 has an oblique opening, and the acute angle between the oblique opening plane and the vertical direction is 60°. The smoke guide plate 2 is located on the same side of the air inlet pipe 3 and its bottom edge is continuously welded to the inner wall of the guide pipe 1, and the top edge of the smoke guide plate 2 is flush with the oblique opening plane.

[0024] The lower end of the flow guide pipe 1 is sealed by a bottom shell 4. Figure 3 It can be seen that the bottom of the bottom shell 4 is a spherical shape protruding downward, and a bottom shell constriction 4-1 is provided on the top of the bottom shell 4. The bottom shell constriction 4-1 is upwardly embedded in the bottom port of the guide tube 1 and is continuously welded and connected.

[0025] A mounting flange 5 is also provided at the lower end of the air inlet pipe 3, and the mounting flange 5 is used for mounting and fixing the exhaust device. In this embodiment, a flange interface 5-1 inclined upward is provided on the side of the mounting flange 5, and an inlet neck 3-1 is provided at the lower end of the air inlet pipe 3, and the inlet neck 3-1 is embedded in the flange interface 5-1 and continuously welded.

[0026] In this embodiment, a positioning protrusion 5-2 is provided at the inner bottom of the flange interface 5-1, and a positioning groove 3-2 is provided at the bottom of the inlet neck 3-1. When the flange interface 5-1 and the inlet neck 3-1 are engaged and connected, the positioning protrusion 5-2 is embedded in the positioning groove 3-2. By relying on the engagement connection between the positioning protrusion 5-2 and the positioning groove 3-2, the relative position relationship between the intake pipe 3 and the mounting flange 5 can be accurately found.

[0027] In this embodiment, the mounting surface of the mounting flange 5 is parallel to the axial direction of the flow guide pipe 1. When the mounting flange 5 is mounted and fixed on a vertical plane, the flow guide pipe 1 is in a vertical state.

[0028] Processing method:

[0029] The guide pipe 1, the smoke guide plate 2, the air intake pipe 3, the bottom shell 4 and the mounting flange 5 are formed separately, the smoke guide plate 2 is placed in the upper port of the guide pipe 1 and welded, the bottom shell 1 is installed in the lower port of the guide pipe 1 and welded, the inlet neck 3-1 of the air intake pipe 3 is embedded in the flange interface 5-1 of the mounting flange 5 and the positioning protrusion 5-2 is combined with the positioning groove 3-2, and then welded.

Claims

1. A low-resistance, high-induction exhaust device, characterized by: The invention comprises a guide pipe (1) and an air inlet pipe (3), wherein the upper end of the air inlet pipe (3) is connected to the middle of the guide pipe (1), the center lines of the air inlet pipe (3) and the guide pipe (1) intersect and have an acute angle, a smoke guide plate (2) is installed on the inner wall of the upper end of the guide pipe (1), the smoke guide plate (2) gradually narrows the upper end outlet of the guide pipe (1), the lower end of the guide pipe (1) is closed by a bottom shell (4), and a mounting flange (5) is also provided at the lower end of the air inlet pipe (3).

2. The low-resistance, high-induction exhaust device according to claim 1, characterized in that: The upper end of the guide pipe (1) has an oblique opening, and the acute angle between the oblique opening plane and the vertical direction is 60°; the smoke guide plate (2) is located on the same side of the air inlet pipe (3) and its bottom edge is continuously welded to the inner wall of the guide pipe (1); the top edge of the smoke guide plate (2) is flush with the oblique opening plane, and the angle between the smoke guide plate (2) and the vertical direction is 60°.

3. The low-resistance, high-induction exhaust device according to claim 2, characterized in that: The bottom of the bottom shell (4) is in a spherical shape protruding downwards, and a bottom shell constriction (4-1) is provided on the top of the bottom shell (4). The bottom shell constriction (4-1) is upwardly embedded in the bottom port of the flow guide pipe (1) and is continuously welded and connected.

4. The low-resistance high-induction exhaust device according to claim 3 is characterized in that: A flange interface (5-1) inclined upward is provided on the side of the mounting flange (5), and an inlet neck (3-1) is provided at the lower end of the air inlet pipe (3), and the inlet neck (3-1) is embedded in the flange interface (5-1) and is continuously welded and connected.

5. The low-resistance, high-induction exhaust device according to claim 4, characterized in that: A positioning protrusion (5-2) is provided at the inner bottom of the flange interface (5-1), and a positioning notch (3-2) is provided at the bottom of the inlet neck (3-1). When the flange interface (5-1) and the inlet neck (3-1) are engaged and connected, the positioning protrusion (5-2) is embedded in the positioning notch (3-2).

6. The low-resistance, high-induction exhaust device according to any one of claims 1 to 5, characterized in that: The mounting surface of the mounting flange (5) is parallel to the axial direction of the flow guide pipe (1).

7. The low-resistance, high-induction exhaust device according to any one of claims 1 to 5, characterized in that: The acute angle between the center lines of the air intake pipe (3) and the flow guide pipe (1) is 30°.

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