A low-noise roof ventilator of typhoon resistance type

Abstract

The application discloses an anti-typhoon type low-noise roof ventilation device, which comprises a wind cap, a wind cylinder, a mounting base and a motor, the top surface of the top plate of the mounting base is fixed with the wind cylinder, the motor is arranged in the wind cylinder, and the bottom output shaft of the motor is fixed with an impeller; the upper portion of the wind cylinder is provided with the wind cap, a plurality of connecting frames are fixed on the outer side wall of the upper portion of the wind cylinder, a soundproof wind baffle is inserted into the upper portion of the wind cylinder, the bottom end of the soundproof wind baffle is fixed on all the connecting frames, the wind cap is inserted into the upper portion of the soundproof wind baffle, and the gap between the outer side wall of the wind cap and the inner side wall of the soundproof wind baffle is formed with an annular exhaust port. The upper portions of the wind cap and the wind cylinder are all in the soundproof wind baffle, so that the rainwater in the typhoon cannot blow into the inside of the fan through the side horizontal wind, the annular exhaust port formed between the soundproof wind baffle and the wind cap can make part of the wind vertically upwardly exhaust, and the noise of the exhaust port is reduced, and the air flow resistance and energy consumption can be reduced.

Description

Technical fields:

[0001] This invention relates to the field of ventilation equipment technology, and more specifically to a typhoon-resistant, low-noise roof ventilation device. Background technology:

[0002] There are many types of existing roof ventilators, made of various materials such as aluminum and fiberglass. For example, an axial flow low-noise roof ventilator with Chinese patent application number 202021250238.7 has a duct on the top of the mounting base, with a sound-absorbing layer inside the duct. A check valve is installed inside the mounting base, and a mushroom-shaped hood is installed on the top of the duct. Its rainproof structure uses a mushroom-shaped hood placed on the top of the ventilator, which can play a certain role in rain protection. However, it cannot effectively prevent rain from the crosswinds during typhoon season. Because the wind direction is chaotic during typhoons, rainwater will be blown obliquely into the ventilator and drift into the room. Moreover, some rainwater will flow upward against the side wall of the duct and finally enter from the top of the duct, making the duct unable to block the rainwater.

[0003] Moreover, the axially flowing airflow needs to be turned back 180 degrees after being guided by the wind cap and discharged externally, which significantly increases airflow resistance and energy consumption. Summary of the Invention:

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a typhoon-resistant, low-noise roof ventilation device. The upper part of its wind cap and wind duct is located in a sound-absorbing wind deflector, which prevents rainwater in typhoons from being blown into the fan through crosswinds. The annular exhaust port formed between the sound-absorbing wind deflector and the wind cap allows some air to be discharged vertically upwards, reducing the noise at the exhaust port. This reduces airflow resistance and energy consumption.

[0005] The technical solution of the present invention is as follows:

[0006] A typhoon-resistant, low-noise roof ventilation device includes a vent cap, a duct, a mounting base, and a motor. The duct is fixed to the top surface of the top plate of the mounting base, and the motor is installed inside the duct. An impeller is fixed to the bottom output shaft of the motor.

[0007] A hood is installed on the top of the duct, and multiple connecting brackets are fixed on the upper outer wall of the duct. A sound-absorbing baffle is inserted into the upper outer side of the duct, and the bottom end of the sound-absorbing baffle is fixed on all the connecting brackets. The hood is inserted into the upper part of the sound-absorbing baffle, and an annular exhaust port is formed in the gap between the outer wall of the hood and the inner wall of the sound-absorbing baffle.

[0008] Multiple support beams are fixed on the inner wall of the air duct. The bottom plate of the motor is fixed on all the support beams. The impeller is located below all the support beams and faces the central through hole of the mounting base.

[0009] The connecting frame comprises triangular supporting blocks and horizontal supporting beams fixed on the bottom surface of the triangular supporting blocks, and the bottom surface of the soundproof wind baffle is pressed against the top surface of the outer end of all the horizontal supporting beams and is fixed on the horizontal supporting beams by bolts.

[0010] The wind cap comprises an upper conical top plate with a top surface being a conical wall surface protruding upward, a conical inner plate with a bottom surface being a conical wall surface extending downward is fixed on the middle part of the bottom surface of the upper conical top plate, the middle axes of the upper conical top plate and the conical inner plate coincide, and the conical inner plate is right above the wind tube and faces the top end air outlet of the wind tube.

[0011] The edge part of the upper conical top plate faces the outside of the wind tube.

[0012] The top surface of the wind tube is fixed with a plurality of vertical supporting columns, the upper conical top plate is fixed on the top surface of all the vertical supporting columns, and the conical inner plate is above all the vertical supporting columns.

[0013] The edge top surface of the mounting base is fixed with a plurality of outer supporting rods, and the inner end of the outer supporting rods is fixed on the outer side wall of the wind tube.

[0014] The middle part of the top plate of the mounting base is formed with an air inlet through hole, the impeller faces the air inlet through hole, the bottom surface of the top plate of the mounting base is fixed with a check valve, and the check valve covers the air inlet through hole.

[0015] The beneficial effects of the present application are that:

[0016] 1. The upper part of the wind cap and the wind tube are in the soundproof wind baffle, so that the rain in the typhoon cannot blow into the inside of the fan through the side horizontal wind, and the annular air outlet formed between the soundproof wind baffle and the wind cap can make part of the wind vertically upward, reduce the noise of the air outlet, and reduce the air resistance and energy consumption.

[0017] 2. The setting of the arc-shaped bending part can block the rainwater and finally make it fall downward when the typhoon pushes the rainwater upward along the outer side wall of the wind tube 2 in the opposite direction, so that the rainwater cannot enter the wind tube. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a partial sectional view of the present application;

[0019] Figure 2 is Figure 1 a partial enlarged view. DETAILED DESCRIPTION

[0020] Embodiment: see Figures 1 to 2As shown, a kind of anti typhoon type low noise roof ventilator, including wind cap 1, wind tube 2, installation base 3 and motor 4, the top surface of the top plate of the installation base 3 is fixed with wind tube 2, motor 4 is equipped in wind tube 2, and the bottom output shaft of motor 4 is fixed with impeller 41;

[0021] The wind cap 1 is installed above the wind tube 2, and a plurality of connecting frames 21 are fixed on the outer side wall of the upper portion of the wind tube 2, the connecting frame 21 includes a triangular support block 211 and a horizontal support beam 212 fixed on the bottom surface of the triangular support block 211, the horizontal support beam 212 is made of channel steel material, the inner end top surface of the horizontal support beam 212 is fixed with a vertical beam, the inner wall surface of the triangular support block 211 is fixed on the inner side wall of the vertical beam, the bottom surface of the triangular support block 211 is fixed on the top surface of the horizontal support beam 212, and the inner ends of the vertical beam and the horizontal support beam 212 are welded and fixed on the outer side wall of the wind tube 2.

[0022] The bottom surface of the sound-absorbing wind deflector 5 is pressed against the gasket on the outer end top surface of all horizontal support beams 212, and the bottom surface of the sound-absorbing wind deflector 5, the gasket and the corresponding horizontal support beam 212 are connected by bolt fixation.

[0023] The upper portion of the wind tube 2 and the wind cap 1 are in the sound-absorbing wind deflector 5, the top end of the wind cap 1 is lower than the top surface of the sound-absorbing wind deflector 5, and the gap between the outer side wall of the wind cap 1 and the inner side wall of the sound-absorbing wind deflector 5 forms an annular exhaust port 6.

[0024] Further, a plurality of support beams 22 are fixed on the inner side wall of the wind tube 2, the bottom plate of the motor 4 is fixed on the top surface of all support beams 22, the output shaft bottom end of the motor 4 extends out of the bottom surface of the support beam 22 and is fixed with the impeller 41, the impeller 41 is below all support beams 22 and faces the middle through hole of the installation base 3.

[0025] Further, the wind cap 1 includes an upper conical top plate 11 with a top surface being a conical wall surface protruding upward, a conical inner plate 12 with a bottom surface being a conical wall surface extending downward is fixed in the middle of the bottom surface of the upper conical top plate 11, a horizontal fixed plate is fixed on the top of the conical inner plate 12, the conical inner plate 12 is a perforated plate, a conical compression plate 121 is fixed on the bottom surface of the horizontal fixed plate, the conical compression plate 121 cooperates with the conical inner plate 12, and the conical compression plate 121 and the conical inner plate 12 are filled with sound-absorbing cotton. Its conical inner plate 12 is a perforated plate, and the sound-absorbing cotton can reduce the noise of the wind blowing to the conical inner plate 12.

[0026] The middle axes of the upper conical top plate 11 and the conical inner plate 12 coincide, and the inner wall surface of the upper conical top plate 11 is fixed with an inner reinforcing plate to increase its strength.

[0027] The conical inner plate 12 is directly above the wind tube 2 and faces the top end air outlet of the wind tube 2.

[0028] Furthermore, the edge of the upper conical top plate 11 faces the outside of the air duct 2.

[0029] Furthermore, a flange is formed on the top outer wall of the duct 2, and multiple vertical support columns 7 are fixed on the top surface of the flange. An upper conical top plate 11 is fixed on the top surface of all the vertical support columns 7, and a conical inner plate 12 is positioned above all the vertical support columns 7. A downward-bending arc-shaped bend 201 is formed on the outer wall of the flange. The arc-shaped bend 201 is designed so that when a typhoon occurs, the rainwater is pushed upwards along the outer wall of the duct 2 by the typhoon. The rainwater is blocked by the arc-shaped bend 201 and falls downwards, preventing it from entering the duct 2.

[0030] Furthermore, multiple external support rods 31 are fixed to the top surface of the mounting base 3, and the inner ends of the external support rods 31 are fixed to the outer wall of the air duct 2.

[0031] Furthermore, the top plate of the mounting base 3 has an air inlet hole formed in the middle, the impeller 41 faces the air inlet hole, and a check valve 8 is fixed on the bottom surface of the top plate of the mounting base 3, covering the air inlet hole. A filter screen is fixed on the bottom surface of the check valve 8.

[0032] An upper transverse support beam is fixed to the outer wall of the vertical support column 7, and the outer end of the upper transverse support beam is fixed to the inner wall of the sound-absorbing wind deflector 5.

[0033] The sound-absorbing wind deflector 5 of this invention is readily available for purchase. It includes an outer cylinder, an inner cylinder, an upper annular plate, and a lower annular plate. The inner cylinder is located within the outer cylinder. The top surfaces of both the outer and inner cylinders are fixed to the bottom surface of the same upper annular plate, and the bottom surfaces of both are fixed to the top surface of the same lower annular plate. Sound-absorbing cotton, such as glass wool, is filled between the outer and inner cylinders. The inner cylinder is made of a perforated plate.

[0034] In this embodiment, when in use, the motor 4 runs and the impeller 41 rotates, causing the air in the room to be drawn upwards and flow upwards through the air duct 2. After being guided by the conical inner plate 12, it flows outwards. Then, part of the air is discharged upwards from the annular exhaust port 6, allowing the air to be discharged vertically upwards, which can reduce airflow resistance and energy consumption. The remaining part is discharged downwards from the lower part of the silencer baffle 5 and the flow channel between the air duct 2. The silencer baffle 5 can reduce the noise of the air outlet.

[0035] During typhoons, the winds blow rainwater across the sides, causing it to hit the outer wall of the soundproof windbreak duct 5, thus preventing it from entering the wind duct 2. Some rainwater may flow upwards along the bottom outer wall of the wind duct 2; in this case, the curved bend 201 blocks the flow and directs the rainwater vertically, minimizing the risk of it entering the wind duct 2.

[0036] The rain falling from above will flow outward along the edge of the upper conical top plate 11, and finally fall through the gap between the air duct 2 and the soundproof baffle 5, without entering the air duct 2, thus ensuring the normal operation of the equipment.

[0037] The space between the conical pressing plate 121 and the conical inner plate 12 is filled with sound-absorbing cotton. The conical inner plate 12 is a perforated plate. The perforated plate and the sound-absorbing cotton can reduce noise and guide the air blown onto the conical inner plate 12, so that the air can move outward along the conical inner plate 12 and finally be discharged upward from the annular exhaust port 6.

[0038] This embodiment has strong typhoon resistance and good rain protection and drainage effects.

Claims

1. A typhoon-resistant, low-noise roof ventilation device, comprising a vent cap (1), a duct (2), a mounting base (3), and a motor (4), characterized in that: The top surface of the mounting base (3) is fixed with a duct (2), and a motor (4) is provided in the duct (2). An impeller (41) is fixed on the bottom output shaft of the motor (4). A hood (1) is installed above the air duct (2). Multiple connecting frames (21) are fixed on the upper outer side wall of the air duct (2). A sound-absorbing wind-blocking duct (5) is inserted into the upper outer side of the air duct (2). The bottom end of the sound-absorbing wind-blocking duct (5) is fixed on all the connecting frames (21). The hood (1) is inserted into the upper part of the sound-absorbing wind-blocking duct (5). An annular exhaust port (6) is formed in the gap between the outer side wall of the hood (1) and the inner side wall of the sound-absorbing wind-blocking duct (5). The wind cap (1) includes an upper conical top plate (11) with an upward-convex conical wall surface. A conical inner plate (12) with a downward-extending conical wall surface is fixed to the middle of the bottom surface of the upper conical top plate (11). The middle axes of the upper conical top plate (11) and the conical inner plate (12) coincide. The conical inner plate (12) is located directly above the wind duct (2) and faces the top air outlet of the wind duct (2). The edge of the upper conical top plate (11) faces the outside of the air duct (2); A horizontal fixing plate is fixed to the top of the conical inner plate (12). The conical inner plate (12) is a perforated plate. A conical pressing plate (121) is fixed to the bottom surface of the horizontal fixing plate. The conical pressing plate (121) cooperates with the conical inner plate (12). The space between the conical pressing plate (121) and the conical inner plate (12) is filled with sound-absorbing cotton. The conical inner plate (12) is a perforated plate. The sound-absorbing cotton can reduce the noise of the wind blowing onto the conical inner plate (12). The top surface of the air duct (2) is fixed with multiple vertical support columns (7), the upper conical top plate (11) is fixed on the top surface of all the vertical support columns (7), and the conical inner plate (12) is located above all the vertical support columns (7); The top outer wall of the air duct (2) is formed with a flange edge, and multiple vertical support columns (7) are fixed on the top surface of the flange edge. The outer wall of the flange edge is formed with a downwardly bent arc-shaped bend (201).

2. The typhoon-resistant, low-noise roof ventilation device according to claim 1, characterized in that: Multiple support beams (22) are fixed on the inner wall of the air duct (2). The bottom plate of the motor (4) is fixed on all the support beams (22). The impeller (41) is located below all the support beams (22) and faces the central through hole of the mounting base (3).

3. The typhoon-resistant, low-noise roof ventilation device according to claim 1, characterized in that: The connecting frame (21) includes a triangular support block (211) and a transverse support beam (212) fixed on the bottom surface of the triangular support block (211). The bottom surface of the sound-absorbing wind deflector (5) presses against the top surface of the outer end of all the transverse support beams (212) and is fixedly connected to the transverse support beams (212) by bolts.

4. The typhoon-resistant, low-noise roof ventilation device according to claim 1, characterized in that: The mounting base (3) has multiple external support rods (31) fixed on its top edge, and the inner ends of the external support rods (31) are fixed on the outer side wall of the air duct (2).

5. The typhoon-resistant, low-noise roof ventilation device according to claim 1, characterized in that: The top plate of the mounting base (3) has an air inlet hole formed in the middle, the impeller (41) faces the air inlet hole, and a check valve (8) is fixed on the bottom surface of the top plate of the mounting base (3), covering the air inlet hole.

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