CN-116492794-B - Air filter

CN116492794BCN 116492794 BCN116492794 BCN 116492794BCN-116492794-B

Abstract

The invention discloses an air filtering device which comprises a power air inlet part, a filter element part and a power air outlet part, wherein the power air inlet part comprises a first air suction mechanism and a silencing barrel arranged on the first air suction mechanism in the circumferential direction, the filter element part is hollow and similar to a cylinder, two ends of the filter element part are closed, an air outlet pipe of the first air suction mechanism is arranged at one end of the filter element part in a penetrating mode in a sealing mode and extends into the filter element part, the power air outlet part comprises a second air suction mechanism, an air guide pipe and a silencing assembly arranged on the air guide pipe, the air guide pipe is in clearance sealing sleeve joint with the circumferential direction of the filter element part, and the air outlet end of the air guide pipe is in sealing communication with the air inlet end of the second air suction mechanism. The invention has the beneficial effects of improving the filtering and purifying efficiency in a limited space and reducing noise at the same time.

Inventors

XUE FENGWEI
DONG WEI
ZHANG YUSHUANG

Assignees

北京理韩汽车配件有限公司

Dates

Publication Date: 20260512
Application Date: 20230519

Claims (3)

1. An air filtration device, comprising: The power air inlet part comprises a first air suction mechanism and a silencing cylinder arranged on the circumference of the first air suction mechanism; The filter core part is hollow and cylindrical, and two ends of the filter core part are closed, wherein an air outlet pipe of the first air suction mechanism is hermetically penetrated at one end of the filter core part and extends into the filter core part; the power air outlet part comprises a second air draft mechanism, an air draft pipe and a silencing component arranged on the air draft pipe, wherein the air draft pipe is in clearance sealing sleeve joint with the circumferential direction of the filter core part, and the air outlet end of the air draft pipe is in sealing communication with the air inlet end of the second air draft mechanism; the silencing barrel comprises a fixed barrel fixed on the circumference of the first air suction mechanism through a fixed plate clearance and an annular first silencing plate laid on the inner side wall of the fixed barrel, wherein the other end of the fixed barrel is fixed on the end face of the filter element part; the filter element part comprises a hollow cylindrical-like first pore plate and a second pore plate which are sleeved in a clearance way, and a electret nanofiber membrane filled between the first pore plate and the second pore plate; The first pore plate and the second pore plate are both in a shape with a truncated cone at the front end and a cylindrical shape at the rear end, wherein the diameter of the truncated cone-shaped part at the front end along the wind flow direction is gradually reduced; the air guide pipe comprises a cylindrical air containing pipe sleeved outside the filter element part and a truncated cone-shaped air guide pipe communicated with the air inlet end of the second air suction mechanism; The silencing component comprises an annular second silencing plate, a fixed sleeve and silencing materials, the annular second silencing plate is arranged on the inner side wall of the air accommodating pipe, the fixed sleeve is sleeved on the outer side of the air accommodating pipe and the outer side of the air guide pipe in a clearance mode, and the silencing materials are filled in the fixed sleeve; The second silencing plate is provided with a plurality of silencing bulges at intervals, and the silencing bulges are obliquely arranged along the wind flow direction.
2. The air filter device according to claim 1, wherein a baffle plate with a plurality of strip-shaped holes is radially arranged on the air outlet pipe of the first air suction mechanism, and a primary filter material layer is laid on the baffle plate.
3. The air filter device of claim 1, further comprising a support base, the top of which is secured to the bottom of the sound attenuating canister and the bottom of the retaining sleeve by a support bracket.

Description

Air filter Technical Field The invention relates to the technical field of automobile air filtration. More particularly, the present invention relates to an air filtration device. Background With the continuous rapid promotion of the industrialization process, the economy is continuously developed, the life and the work are more and more dependent on automobiles, the automobiles become the first choice of people to go out, and the time spent by the people in the automobiles is also remarkably increased. However, with the gradual deterioration of the atmospheric environment, the indoor environment of the automobile becomes worse, and at the same time, after the majority of people purchase the automobile, the interior decoration is also carried out, or old automobile is renovated, such as ground glue, seat cover cushion and adhesive enter the automobile, and toxic gas contained in the decorative materials causes air pollution in the automobile. The original decoration, fabric and the like of the automobile can release harmful particles, so that the environment in the automobile is more severe. The vehicle-mounted air purifier is used as a tool for purifying the air in the vehicle, and can be used for rapidly and effectively purifying the air in the vehicle under power driving. Air pollutants in vehicles are mainly classified into fine particulate matters and VOCs gases. At present, the core materials of the purifying filter element of the vehicle-mounted air purifier are mainly common non-woven fiber filter materials, glass fiber filter materials and melt-blown fiber filter materials. The common non-woven filter material can realize effective filtration of particulate matters, the glass fiber filter material can achieve higher filtration efficiency by virtue of the advantages of small diameter and small pore diameter, and the melt-blown electret filter material can realize high filtration performance under the condition of not increasing piezoresistance. Regardless of the material used as the filter element to purify the air, the air in the automobile is forced to continuously circulate by power to achieve continuous purification, and noise is continuously generated in the process, and sources of the noise are mainly power supply machinery (exhaust fan) and airflow vibration. The air flow is accelerated under the power action of the exhaust fan, and at the moment, the air flow is too fast to generate vibration so as to generate noise, and the larger the air flow speed is, the larger the noise is. The operation of the suction fan itself also generates vibrations and thus noise. In the narrow space of the automobile, the noise is particularly obvious in interference to the human body, is better and durable, and causes damage to the human body to different degrees. Disclosure of Invention It is an object of the present invention to solve at least the above problems and to provide at least the advantages to be described later. To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided an air filtering device including: The power air inlet part comprises a first air suction mechanism and a silencing cylinder arranged on the circumference of the first air suction mechanism; The filter core part is hollow and cylindrical, and two ends of the filter core part are closed, wherein an air outlet pipe of the first air suction mechanism is hermetically penetrated at one end of the filter core part and extends into the filter core part; The power air-out portion comprises a second air draft mechanism, an air draft tube and a silencing assembly arranged on the air draft tube, wherein the air draft tube is in clearance sealing sleeve joint with the circumference of the filter core, and the air outlet end of the air draft tube is in sealing communication with the air inlet end of the second air draft mechanism. Preferably, the silencing barrel comprises a fixed barrel fixed on the circumference of the first air suction mechanism through a fixed plate clearance and an annular first silencing plate laid on the inner side wall of the fixed barrel, wherein the other end of the fixed barrel is fixed on the end face of the filter core. Preferably, the filter element part comprises a hollow cylindrical-like first pore plate and a hollow cylindrical-like second pore plate which are sleeved in a clearance way, and a electret nanofiber membrane filled between the first pore plate and the second pore plate. Preferably, the first orifice plate and the second orifice plate are both in a shape of a truncated cone at the front end and a cylindrical shape at the rear end, wherein the diameter of the truncated cone-shaped part of the front end in the wind flow direction is gradually reduced. Preferably, the air guide pipe comprises a cylindrical air containing pipe sleeved outside the filter element part and a truncated cone-shaped air guide pipe communicated with the air inlet end of