CN112983702A

CN112983702A - Novel noise-reduction air filter

Info

Publication number: CN112983702A
Application number: CN202011611593.7A
Authority: CN
Inventors: 周书忠; 黄韬; 聂锦文; 彭绍灵
Original assignee: Guangdong Hengbo Filter Co ltd
Current assignee: Guangdong Hengbo Filter Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-06-18

Abstract

The invention discloses a novel noise-reduction air filter, which comprises a shell, an air inlet pipe and an air outlet pipe, wherein the air inlet pipe and the air outlet pipe are arranged on the shell, a filter element is arranged in the shell, the inner cavity of the shell is divided into a front filter cavity and a rear filter cavity by the filter element, the air inlet pipe is communicated with the front filter cavity, the air outlet pipe is communicated with the rear filter cavity, the air outlet pipe is provided with two air outlet pipes, a partition board for partitioning the two air outlet pipes is arranged between the two air outlet pipes, the partition board is higher than air inlets of the air outlet pipes, air sucked into the rear filter cavity is divided into two parts by the partition board and enters the corresponding air inlets under the dredging of the partition board, so that the two parts of air generate turbulent flow at the air inlets corresponding to the two air outlet pipes, the noise generated by the turbulent flow of.

Description

Novel noise-reduction air filter

Technical Field

The invention relates to the technical field of air filters, in particular to a novel noise reduction air filter.

Background

An air filter is a device for filtering impurities in air through a filter element, and is generally applied to a filter system of an engine. When the engine works, clean air needs to be sucked from the air filter, and the clean air and fuel are mixed in a combustion chamber of the engine to burn and work. When the engine sucks air to the air filter, the cylinder of the engine generates huge negative pressure, so that the external air is quickly sucked into the air filter, and in the process of quick flow of the air, the high-frequency vibration generated by the air enables the shell of the air filter or the internal parts of the air filter to resonate with the shell of the air filter or the internal parts of the air filter, so that the air filter generates larger noise, and therefore, the high-speed air is not easy to resonate with the parts by dredging air flow or enhancing the strength of the parts, so that the purpose of reducing the noise is realized.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a novel noise reduction air filter.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a novel empty filter of making an uproar falls, includes the shell and installs intake pipe and the blast pipe on the shell, the inside filter core that is equipped with of shell, the filter core separates the shell inner chamber for straining the ante-chamber and strain the back chamber, intake pipe and strain the ante-chamber intercommunication, blast pipe and strain the back chamber intercommunication, the blast pipe has two, and is equipped with the baffle that separates it between two blast pipes, and the baffle is higher than the air inlet a of blast pipe.

The air inlet a of the exhaust pipe is a flared opening which expands outwards, and the periphery of the flared opening is turned outwards to form a coiled bent edge.

The exhaust pipe is a conical air passage from the air inlet a to the air outlet.

The two air inlet pipes and the partition plate are integrally formed to form an exhaust assembly, and the exhaust assembly is fixedly connected with the shell.

The exhaust assembly comprises a connecting seat arranged between the two exhaust pipes, and the connecting seat extends out of connecting plates from the side walls of the two exhaust pipes to connect the two exhaust pipes.

The partition plate is fixedly connected to the connecting seat.

And the outer wall of the exhaust pipe is provided with a mounting seat, and the exhaust assembly is fixed in the shell through screws.

The mounting seat is provided with a counter bore for a screw to penetrate through, and the bottom surface of the counter bore extends out of the elastic barb towards the inner cavity of the shell so as to limit the head of the screw.

And a rib plate is arranged in the air inlet b of the air inlet pipe and is abutted against the opposite or adjacent inner wall of the air inlet b.

The invention has the beneficial effects that: the air filter is characterized in that the air filter comprises a filter element, a filter element and a baffle plate, wherein the filter element is arranged between the two exhaust pipes, the baffle plate is arranged between the two exhaust pipes and is higher than the air inlets of the exhaust pipes, the air outlet of the filter element is divided into two parts by the baffle plate, so that the two parts of air generate turbulent flow at the air inlets corresponding to the two exhaust pipes, noise generated by the turbulent flow of an air filter is reduced, and mutual air cross between the two exhaust pipes can be prevented by the arrangement of the baffle plate, so that the air suction efficiency of an.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a schematic diagram of FIG. 1, taken apart;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic view of the vent assembly of the present invention;

FIG. 5 is a top view of the exhaust assembly of the present invention;

FIG. 6 is a cross-sectional view A-A of the present invention;

FIG. 7 is an enlarged view of a portion of the invention at B;

fig. 8 is a partial enlarged view at C of the present invention.

Detailed Description

Referring to fig. 1 to 8, the invention includes the outer casing 1 and air inlet pipe 3 and air vent pipe 4 installed on outer casing 1, there is filter element 2 in the outer casing 1, the filter element 2 separates the inner cavity of the outer casing 1 into a pre-filter cavity 11 and a post-filter cavity 12, the air inlet pipe 3 communicates with the pre-filter cavity 11, the air vent pipe 4 communicates with the post-filter cavity 12, the outside air enters the pre-filter cavity 11 from the air inlet pipe 3, forms clean air after being filtered by the filter element 2 and enters the post-filter cavity 12, finally the clean air is discharged from the air vent pipe 4, the air filter in the structure is connected with carburetor through the air vent pipe 4, realizes the communication between the engine and the air filter, when the engine runs, the inside of the engine produces huge negative pressure, attracts the outside air to flow through the carburetor at high speed, and mixes with the; exhaust pipe 4 in this structure has two, and be equipped with the baffle between two exhaust pipe 4, baffle 5 separates air inlet a41 of two exhaust pipe 4, and simultaneously, baffle 5 is higher than two air inlet a41, when the air that flows at a high speed gets into and strains back chamber 12, the air is separated by baffle 5 and is dredged into two strands of high-speed air currents by baffle 5, and these two strands of air currents correspond respectively and get into in two air inlet a41 that are separated by baffle 5, be favorable to reducing the turbulent flow that two air currents take place the cross disturbance and form, be favorable to weakening the noise that the air produced because of the turbulent flow, realize reducing the mesh of air cleaner noise, and baffle 5's setting can prevent that an air inlet a41 from breathing in from second air inlet a41, in order to avoid influencing the inspiratory efficiency of engine.

Preferably, the exhaust pipe 4 of the present invention is a flared mouth corresponding to the air inlet a41, the periphery of the flared mouth is outwardly turned to form a curled flange, the arrangement of the flange improves the strength of the air inlet a41, which is beneficial to reducing the vibration generated by the high-speed airflow passing through the air inlet a41, and the curled flange enables the high-speed airflow not to directly collide with the air inlet a41, but to enter along the curled flange, which is beneficial to reducing the disturbance of the airflow and preventing the generation of noise, meanwhile, because the air inlet a41 of the exhaust pipe 4 is in a flared shape, the air flow is accelerated after entering the flared mouth, which is beneficial to improving the exhaust amount of the exhaust pipe 4, and is equivalent to increasing the air intake amount of the engine.

Further, the exhaust pipe 4 is a tapered air passage from the air inlet a41 to the air outlet 42, and when the high-speed air enters the exhaust pipe 4 from the bell mouth, the high-speed air is discharged from the air outlet 42 along the tapered air passage, and the tapered air passage is favorable for further accelerating the air flow and increasing the air output.

Two blast pipes 4 and baffle 5 in this embodiment are integrated into one piece and form exhaust subassembly 6, adorn exhaust subassembly 6 on shell 1, can accomplish the installation of two blast pipes 4 and baffle 5, easy operation and convenience, wherein exhaust subassembly 6 still includes the connecting seat 7 that sets up between two blast pipes 4, connecting seat 7 stretches out connecting plate 71 through the lateral wall to two blast pipes 4, make connecting seat 7 be connected with two blast pipes 4 respectively, and baffle 5 is through being connected with connecting seat 7, realize the fixed of baffle 5.

According to the invention, the mounting seat 72 is arranged on the outer wall of the exhaust pipe 4, the counter bore 73 is arranged in the mounting seat 72, the screw penetrates into the counter bore 73 from the side of the post-filter cavity 12 and is connected with the nut arranged outside the shell 1, the exhaust assembly 6 is fixed in the shell 1, and the installation is simple. In addition, the elastic barb 74 extends out of the bottom surface of the counter bore 73 towards the shell 1, when a screw penetrates into the counter bore 73, the elastic barb 74 is squeezed out by the screw head to enter the counter bore 73, after the head of the screw completely passes through the elastic barb 74, the elastic barb 74 resets under the elastic effect of the screw and limits the head of the screw in the counter bore 73 to prevent the screw from falling reversely, and the design can improve the mounting speed of the screw and improve the assembling speed of the air filter.

Preferably, the intake pipe 3 is provided with the rib 32 in the intake port b31, both ends of the rib 32 abut against two opposite or adjacent inner walls of the intake port b31 to reinforce the strength of the intake port b31, when the internal combustion engine is working, the air flow rate of the intake air filter is high and is accompanied by high-frequency vibration, when the high-frequency vibration strength of the air is sufficiently high, the high-frequency vibration can be transmitted to the intake port b31 through the air propagation to cause the amplitude of the side wall of the intake port b31 to be increased, thereby generating noise, and the rib 32 is provided in the intake port b31 to reinforce the connection strength between the opposite or adjacent side walls, so that the side wall of the intake port b31 is not easily vibrated by the high-frequency vibration of the air to cause self vibration, thereby.

Claims

1. The utility model provides a novel empty filter of making an uproar falls, includes shell (1) and installs intake pipe (3) and blast pipe (4) on shell (1), and shell (1) is inside to be equipped with filter core (2), and filter core (2) are separated shell (1) inner chamber for straining antechamber (11) and straining rear chamber (12), and intake pipe (3) and straining antechamber (11) intercommunication, blast pipe (4) and strain rear chamber (12) intercommunication, its characterized in that: the exhaust pipes (4) are provided with two partition plates (5) for separating the exhaust pipes (4), and the partition plates (5) are higher than the air inlets a (41) of the exhaust pipes (4).

2. The novel noise reducing air filter of claim 1, wherein: the air inlet a (41) of the exhaust pipe (4) is a flared bell mouth which expands outwards, and the periphery of the flared bell mouth is turned outwards to form a coiled bent edge.

3. The novel noise reducing air filter of claim 2, wherein: the exhaust pipe (4) is a conical air passage from an air inlet a (41) to an air outlet (42) of the exhaust pipe.

4. The novel noise reducing air filter of claim 1, wherein: two blast pipe (4) with baffle (5) form exhaust subassembly (6) for integrated into one piece, exhaust subassembly (6) with shell (1) is connected fixedly.

5. The novel noise reducing air filter of claim 4, wherein: the exhaust assembly (6) comprises a connecting seat (7) arranged between the two exhaust pipes (4), and the connecting seat (7) extends out of a connecting plate (71) to the side walls of the two exhaust pipes (4) respectively to connect the two exhaust pipes (4).

6. The novel noise reducing air filter of claim 5, wherein: the partition plate (5) is fixedly connected to the connecting seat (7).

7. The novel noise reducing air filter of claim 5, wherein: the exhaust pipe is characterized in that an installation seat (72) is arranged on the outer wall of the exhaust pipe (4), and the exhaust assembly (6) is fixed in the shell (1) through screws.

8. The novel noise reducing air filter of claim 7, wherein: the mounting seat (72) is provided with a counter bore (73) for a screw to penetrate, and the bottom surface of the counter bore (73) extends out of an elastic barb (74) towards the inner cavity of the shell (1) to limit the head of the screw.

9. The novel noise reducing air filter of claim 1, wherein: and rib plates (32) are arranged in the air inlet b (31) of the air inlet pipe (3) and abut against the opposite or adjacent inner wall of the air inlet b (31).