CN210033671U

CN210033671U - Air filter for automobile

Info

Publication number: CN210033671U
Application number: CN201920591047.8U
Authority: CN
Inventors: 蔡进旭
Original assignee: SHANGHAI YONGHONG AUTO PARTS CO Ltd
Current assignee: SHANGHAI YONGHONG AUTO PARTS CO Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-02-07
Anticipated expiration: 2029-04-26

Abstract

The utility model provides an automobile air filter, it is including: the filter comprises an upper shell, a lower shell, a filter element and an insertion pipe. The upper shell is provided with an air outlet, the upper shell is internally provided with an air outlet cavity and a first resonant chamber, the air outlet cavity is isolated from the first resonant chamber, and the air outlet is communicated with the air outlet cavity. The lower shell is provided with an air inlet, the lower shell is internally provided with a filter cavity and a second resonant chamber, the filter cavity is isolated from the second resonant chamber, the air inlet is communicated with the filter cavity through an air inlet pipe, the air inlet pipe is positioned in the second resonant chamber, the upper shell covers the lower shell, and the first resonant chamber is communicated with the second resonant chamber and forms a resonant cavity. The filter element is positioned between the air outlet cavity and the filter cavity and isolates the air outlet cavity from the filter cavity. The insert tube is located in the resonant cavity and has an inlet and an outlet, the inlet being in communication with the inlet tube and the outlet being in communication with the resonant cavity. According to the Homholtz noise elimination principle, the device can realize the noise elimination function without an external noise elimination device, and the cost is reduced.

Description

Air filter for automobile

Technical Field

The utility model relates to an automobile air filter.

Background

Automotive air cleaners are important devices for automotive air induction systems. Air enters the air filter from an air inlet pipe at the front end of the air inlet system, the air is filtered by the filter element, and the filtered air enters the engine through an air outlet pipe at the rear end of the air inlet system. Meanwhile, an automobile air filter is also an important component for controlling the air intake noise of an engine. With the increasing requirements of customers on noise, vibration and harshness (NVH) noise, the control of intake noise becomes more and more important. The main noise elimination original piece of traditional air intake system is the part of making alone, assembles on intake pipe or outlet duct, often because space reason and position reason cause the assembly difficulty, cost increase scheduling problem.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a car air cleaner of noise elimination component assembly of being convenient for in order to overcome the defect of noise elimination component assembly difficulty, cost-push among the prior art among the car air cleaner.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

an automobile air filter is characterized by comprising:

the upper shell is provided with an air outlet, the upper shell is internally provided with an air outlet cavity and a first resonant chamber, the air outlet cavity is isolated from the first resonant chamber, and the air outlet is communicated with the air outlet cavity;

the air inlet is communicated with the filter cavity through an air inlet pipe, the air inlet pipe is positioned in the second resonant chamber, the upper shell covers the lower shell, and the first resonant chamber is communicated with the second resonant chamber to form a resonant cavity;

the filter element is positioned between the air outlet cavity and the filter cavity and isolates the air outlet cavity from the filter cavity;

the inserting pipe is positioned in the resonant cavity and provided with an inlet and an outlet, the inlet is communicated with the air inlet pipe, and the outlet is communicated with the resonant cavity.

Preferably, the lower shell is internally provided with a buckling part, and one end of the insertion tube is clamped in the buckling part.

Preferably, the inlet is located at the middle section of the insertion tube, and the outlet is located at one end of the insertion tube far away from the buckling part.

Preferably, the automotive air cleaner further comprises a sealing member that seals a connection position of the upper case and the lower case.

On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in: according to the Homholtz silencing principle, the insertion pipe and the resonance cavity in the automobile air filter form a silencer, the silencing function can be realized without externally connecting a silencing device, and the cost is reduced.

Drawings

Fig. 1 is a schematic perspective view of an air cleaner for an automobile according to a preferred embodiment of the present invention.

Fig. 2 is a schematic view of the internal structure of an automotive air cleaner according to a preferred embodiment of the present invention.

Description of reference numerals:

upper case 100

Air outlet 110

Air outlet cavity 120

First resonator 130

Lower case 200

Air inlet 210

Filter cavity 220

Second resonance chamber 230

Intake pipe 240

Latch 250

Filter element 300

Insertion tube 400

Inlet 410

An outlet 420

Seal 500

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

Fig. 1 and 2 show an air cleaner for a vehicle, comprising: an upper case 100, a lower case 200, a filter cartridge 300, and an insert tube 400. The upper casing 100 has an air outlet 110, the upper casing 100 has an air outlet cavity 120 and a first resonance chamber 130 therein, the air outlet cavity 120 is isolated from the first resonance chamber 130, and the air outlet 110 is communicated with the air outlet cavity 120. The lower shell 200 is provided with an air inlet 210, the lower shell 200 is internally provided with a filter cavity 220 and a second resonance chamber 230, the filter cavity 220 is isolated from the second resonance chamber 230, the air inlet 210 is communicated with the filter cavity 220 through an air inlet pipe 240, the air inlet pipe 240 is positioned in the second resonance chamber 230, the upper shell 100 is covered on the lower shell 200, and the first resonance chamber 130 is communicated with the second resonance chamber 230 to form a resonance cavity. The filter element 300 is positioned between the outlet cavity 120 and the filter cavity 220 and separates the outlet cavity 120 from the filter cavity 220. An insert tube 400 is located within the resonant cavity, the insert tube 400 having an inlet 410 and an outlet 420, the inlet 410 communicating with the inlet tube 240 and the outlet 420 communicating with the resonant cavity.

According to the Homholtz silencing principle, the sound wave interference is formed when the spatial section of sound wave transmission changes suddenly and a bypass occurs, so that the silencing effect is achieved. In the scheme, the inlet 410 of the insertion pipe 400 is communicated with the air inlet pipe 240 and is a bypass on a sound wave propagation path, and the outlet 420 of the insertion pipe 400 is communicated with the resonant cavity, so that sudden change of the section of the pipeline is formed, sound wave interference is favorably formed, and the silencing function is realized. The process of acoustic wave propagation is as follows: the sound wave propagates along the pipe direction of the air inlet pipe 240, and when the sound wave reaches the position of the inlet 410 of the insertion pipe 400, part of the sound wave enters the insertion pipe 400 and enters the resonant cavity from the outlet 420; because the section of the insertion tube 400 and the resonant cavity generates abrupt change to cause impedance change, sound waves are reflected back into the insertion tube 400 and enter the air inlet tube 240 to interfere with the sound waves in the air inlet tube 240, so that the sound attenuation effect is achieved.

In order to assemble the insertion tube 400, a locking portion 250 is disposed in the lower housing 200, and one end of the insertion tube 400 is locked to the locking portion 250. The clamping part 250 is connected with the insertion tube 400, so that the assembly and disassembly are convenient, and the assembly efficiency is improved.

In this embodiment, the inlet 410 is located in the middle of the insertion tube 400, and the outlet 420 is located at an end of the insertion tube 400 far away from the locking portion 250. The sound waves enter the insertion tube 400 from the middle section of the insertion tube 400 and then are respectively transmitted to the two ends of the insertion tube 400, so that the number of the bypasses on the sound wave transmission path is increased, and the improvement of the noise elimination effect is facilitated.

In addition, the air cleaner for an automobile further includes a sealing member 500, and the sealing member 500 seals a connection position of the upper case 100 and the lower case 200. The sealing member 500 can prevent sound waves from being transmitted from the connection position of the upper casing 100 and the lower casing 200 to cause a sound leakage phenomenon, and can ensure that air can be discharged from the air outlet 110 only after being filtered by the filter element 300, thereby improving the filtering effect.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. An automobile air filter, its characterized in that, it is including:

2. The air cleaner of claim 1, wherein the lower housing has a latch portion therein, and one end of the insert tube is latched to the latch portion.

3. The automotive air cleaner of claim 2, wherein the inlet is located at a middle section of the insert tube and the outlet is located at an end of the insert tube distal from the latch portion.

4. The automotive air cleaner of claim 1, further comprising a seal that seals a connection location of the upper housing and the lower housing.