Low-noise large-flow fan

Abstract

The utility model discloses a low-noise large-flow fan, which comprises a mounting cover arranged on a positioning seat, a fan assembly is arranged in the mounting cover, the fan assembly comprises a blade connecting rotating shaft and blades arranged at the end part of the blade connecting rotating shaft, a shell is arranged on the side surface of the positioning seat, a plurality of air inlets are uniformly distributed along the outer side of the shell, and a plurality of air outlets are formed in the outer side of the shell. A mounting block fixed through a limiting block is arranged on the inner side of the air inlet, a sound absorption ball is mounted in a groove of the mounting block through a rotating rod, and an outer cover body is mounted on the other side of the positioning seat. According to the utility model, the structural design is scientific and reasonable, the plurality of air inlets are correspondingly formed in the outer side of the shell, so that air flow can uniformly enter equipment, and the flow passing performance of the air flow is improved; and the air flow is in effective contact with the sound-absorbing balls in the grooves of the mounting blocks when entering the shell, so that the noise energy in the air flow can be adsorbed through the sound-absorbing balls.

Description

Technical Field

[0001] The utility model relates to the technical field of fan equipment, in particular to a low-noise and high-flow fan. Background Art

[0002] A fan is a device that uses an electric motor to drive the blades to rotate to accelerate the flow of air. It is widely used due to its excellent heat dissipation performance and air exchange performance. Traditional fans have the following problems during use: the high-speed rotation of the fan itself makes noise during operation, and the large flow of gas passes through the structure and contacts, so it will generate noise during operation. There is also the problem of excessive operating noise, which affects the user experience of the device. To this end, we propose a low-noise, high-flow fan. Utility Model Content

[0003] The utility model aims to provide a low-noise large-flow fan to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-noise, large-flow fan, comprising a mounting cover installed on a positioning seat, a fan assembly installed in the mounting cover, the fan assembly comprising a blade-linked shaft and blades installed at its ends, a shell is provided on the side of the positioning seat, a plurality of air inlets are evenly distributed along the outer side of the shell, a mounting block fixed by a limit block is provided on the inner side of the air inlet, a sound-absorbing ball is installed in the groove of the mounting block through a rotating rod, and an outer cover is installed on the other side of the positioning seat.

[0005] In the above solution, the end of the blade coupling shaft is connected to a motor.

[0006] In the above scheme, the blade coupling shaft is rotatably mounted in the bearing seat, a ventilation slot is provided on the blade coupling shaft, and fins are arranged on the outer side thereof.

[0007] In the above solution, the shell is connected to the positioning seat via a connecting seat, and connecting holes are correspondingly provided on the connecting seat and the positioning seat.

[0008] In the above solution, the sound-absorbing ball is a sound-absorbing foam ball.

[0009] In the above scheme, an air outlet cover is provided at the air outlet end of the outer cover body, a sound absorbing damping plate is provided at intervals inside the air outlet cover, and a dustproof net is provided at the opening of the air outlet cover.

[0010] In the above solution, a trumpet-shaped opening is formed between adjacent mounting blocks.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the low-noise large-flow fan has a simple and reasonable structural design and is highly practical. The stability of the blades during rotation is ensured by arranging the bearing seat, the blade shaft, the blades and the motor. Ventilation grooves are provided on the blade shaft and fins are arranged on the outside thereof to enhance the heat dissipation effect of the blade shaft itself, thereby effectively improving the heat dissipation effect of the blade shaft body. A plurality of air inlets are provided on the outer side of the shell, thereby allowing the airflow to enter the interior of the device evenly, thereby increasing the flow rate performance of the airflow. Two mounting blocks are provided on the inner side of the air inlet to form a trumpet-shaped opening, thereby allowing the airflow to effectively contact the sound-absorbing ball in the groove of the mounting block when entering the interior of the shell, thereby allowing the sound-absorbing ball to absorb and process the noise energy inside the airflow. At the same time, the sound-absorbing ball can be driven to rotate by the rotating rod, and the energy is offset by the mutual collision of the sound-absorbing balls, thereby effectively reducing the noise intensity. In addition, an air outlet hood is provided on the outer cover, and a sound-absorbing damping plate is provided in the air outlet hood, thereby effectively reducing the sound wave energy at the air outlet end, thereby further improving the noise reduction performance of the fan mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Figure 2 This is a schematic diagram of the noise reduction structure inside the shell of the utility model.

[0014] Figure 3 It is a schematic diagram of the blade-linked shaft connection structure of the utility model.

[0015] Figure 4 This is a schematic diagram of the shell connection structure of the utility model.

[0016] In the figure: 1 positioning seat, 11 mounting cover, 12 bearing seat, 13 blade shaft, 14 blade, 15 motor, 16 ventilation slot, 17 fin, 18 connecting seat, 19 connecting hole, 2 shell, 21 air inlet, 22 limit block, 23 mounting block, 24 groove, 25 rotating rod, 26 sound absorbing ball, 27 outer cover, 28 air outlet cover, 29 dust screen. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4The utility model provides a technical solution: a low-noise large-flow fan, comprising a mounting cover 11 mounted on a positioning seat 1, a fan assembly mounted in the mounting cover 11, the fan assembly comprising a blade shaft 13 and blades 14 mounted at the end thereof, a shell 2 is arranged on the side of the positioning seat 1, and a plurality of air inlets 21 are evenly distributed along the outer side of the shell 2, and the air inlets 21 are separated by metal blades. The design of the plurality of air inlets effectively improves the air intake flow of the equipment, referring to Figure 4 As shown, the housing 2 is composed of a cover plate away from the connecting seat 18 and metal blades equidistantly arranged inside the cover plate. Furthermore, in order to improve the stability of the device, the cover plate is fixed to the connecting seat 18 through a metal reinforcing rod.

[0019] A mounting block 23 fixed by a limit block 22 is provided on the inner side of the air inlet 21, a sound-absorbing ball 26 is installed in the groove 24 of the mounting block 23 through a rotating rod 25, and the end of the rotating rod 25 is rotatably connected to the mounting block 23 through an axle pin, and an outer cover body 27 is installed on the other side of the positioning seat 1.

[0020] By opening a plurality of air inlets 21 correspondingly on the outer side of the shell 2, the airflow can enter the interior of the device evenly, thereby increasing the flow performance of the airflow. By arranging two mounting blocks 23 on the inner side of the air inlet 21 to form a trumpet-shaped opening, the airflow can effectively contact the sound-absorbing ball 26 in the groove 24 of the mounting block 23 when entering the interior of the shell 2, so that the noise energy inside the airflow can be adsorbed by the sound-absorbing ball 26. At the same time, the sound-absorbing ball 26 can be driven to rotate by the rotating rod 25, and the energy can be offset by the mutual collision of the sound-absorbing balls 26, thereby effectively reducing the noise intensity and achieving the noise reduction effect.

[0021] In the above solution, the end of the blade coupling shaft 13 is connected to a motor 15. Specifically, the motor 15 is fixedly installed in the housing 2, and the blade coupling shaft 13 is driven by the motor 15 to drive the blades 14 to rotate continuously and efficiently.

[0022] In the above scheme, the blade coupling shaft 13 is rotatably mounted in the bearing seat 12, and a ventilation slot 16 is provided on the blade coupling shaft 13, and a fin 17 is provided on the outer side thereof. Specifically, the fin 17 is an aluminum sheet, which can lead out the internal heat of the blade coupling shaft 13. By setting the cooperation of the bearing seat 12, the blade coupling shaft 13, the blade 14 and the motor 15, the stability of the blade 14 during rotation is ensured, and the ventilation slot 16 is provided on the blade coupling shaft 13 and the fin 17 is arranged on the outer side thereof to enhance the heat dissipation effect of the blade coupling shaft 13 itself, which effectively improves the heat dissipation effect of the blade coupling shaft 13 body.

[0023] In the above solution, the housing 2 is connected to the positioning seat 1 via the connecting seat 18 , and connecting holes 19 are correspondingly provided on the connecting seat 18 and the positioning seat 1 .

[0024] In the above solution, the sound-absorbing ball 26 is a sound-absorbing foam ball. Specifically, the material of the sound-absorbing ball 26 can be sound-absorbing foam or organic fiber sound-absorbing material. By opening a plurality of air inlets 21 on the shell 2 to divert the airflow, the intensity of the airflow can be reduced. At the same time, the sound-absorbing ball 26 on the side of the mounting block 23 can absorb the sound energy generated by the airflow, thereby reducing the noise generated when the airflow enters the shell 2.

[0025] In the above scheme, the outlet end of the outer cover 27 is provided with an outlet cover 28, and a sound-absorbing damping plate is arranged in the outlet cover 28 at intervals, and a dust-proof net 29 is arranged at the opening of the outlet cover 28. In addition, by arranging the outlet cover 28 on the outer cover 27, and arranging a sound-absorbing damping plate in the outlet cover 28, the sound-absorbing damping plate is a sound-absorbing foam plate, and when the airflow flows out through the air outlet of the outlet cover 28, the built-in sound-absorbing damping plate plays a role in shock absorption and noise reduction, thereby reducing the decibel intensity of the noise at the outlet end. The sound wave energy at the outlet end can be effectively reduced, and the noise reduction performance of the fan mechanism is further improved.

[0026] In the above solution, a trumpet-shaped opening is formed between adjacent mounting blocks 23 .

[0027] Working principle:

[0028] This type of low-noise, large-flow fan, specifically, consists of an overall frame structure of the device composed of an assembleable positioning seat 1, a shell 2, and an outer cover 27. When working, the airflow is diverted through the air inlet 21 and then evenly enters the interior of the device, thereby increasing the flow performance of the airflow. By arranging two mounting blocks 23 on the inner side of the air inlet 21 to form a trumpet-shaped opening, the airflow effectively contacts the sound-absorbing ball 26 in the groove 24 of the mounting block 23 when entering the interior of the shell 2, so that the noise energy inside the airflow can be adsorbed by the sound-absorbing ball 26, thereby achieving a noise reduction effect. The motor 15 drives the blade shaft 13 to drive the blades 14 to rotate continuously and efficiently. In this process, since the ventilation grooves 16 are opened on the blade shaft 13 and the fins 17 are arranged on the outer side thereof to enhance the heat dissipation effect of the blade shaft 13 itself, the heat dissipation effect of the blade shaft 13 body is effectively improved, thereby ensuring the effective use of the equipment.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-noise, high-flow fan, comprising a mounting cover (11) mounted on a positioning seat (1), characterized in that: A fan assembly is installed in the installation cover (11), and the fan assembly comprises a blade-jointing rotating shaft (13) and blades (14) installed at the ends thereof; a shell (2) is arranged on the side of the positioning seat (1); a plurality of air inlets (21) are evenly distributed along the outer side of the shell (2); a mounting block (23) fixed by a stop block (22) is arranged inside the air inlet (21); a sound-absorbing ball (26) is installed in a groove (24) of the mounting block (23) by a rotating rod (25); and an outer cover (27) is installed on the other side of the positioning seat (1).

2. A low-noise, high-flow fan according to claim 1, characterized in that: The end of the blade coupling shaft (13) is connected to a motor (15).

3. A low-noise, high-flow fan according to claim 1, characterized in that: The blade-jointing rotating shaft (13) is rotatably mounted in the bearing seat (12); a ventilation slot (16) is provided on the blade-jointing rotating shaft (13), and a fin (17) is arranged on the outer side thereof.

4. A low-noise, high-flow fan according to claim 1, characterized in that: The housing (2) is connected to the positioning seat (1) via a connecting seat (18), and connecting holes (19) are correspondingly provided on the connecting seat (18) and the positioning seat (1).

5. The low-noise, high-flow fan according to claim 1, characterized in that: The sound-absorbing ball (26) is a sound-absorbing foam ball.

6. A low-noise, high-flow fan according to claim 1, characterized in that: An air outlet cover (28) is arranged at the air outlet end of the outer cover body (27), a sound absorbing damping plate is arranged inside the air outlet cover (28), and a dustproof net (29) is arranged at the opening of the air outlet cover (28).

7. A low-noise, high-flow fan according to claim 1, characterized in that: A trumpet-shaped opening is formed between adjacent mounting blocks (23).

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