Air filter

Abstract

The utility model relates to an air filter which is connected with an engine and comprises an air filtering body, an air filtering element, a connecting pipe and a resonant cavity. The air filtering body comprises an air inlet box, a filter element supporting piece and an outer cover and is provided with a sealed space. The air filtering element is arranged on the filter element supporting piece and contained in the sealed space. One end of the connecting pipe extends to the sealed space, and the other end of the connecting pipe is connected with the engine. The resonant cavity is communicated with the connecting pipe and is accommodated in the sealed space. Therefore, the resonant cavity can be far away from a throttle valve of the engine, airflow disturbance in the connecting pipe is reduced, the efficiency of the engine is improved, and the effect of increasing power is achieved. In addition, the resonant cavity is accommodated in the sealed space, so that a better sound insulation effect is achieved, and the vibration noise can be reduced.

Description

Technical Field

[0001] The utility model relates to an air filter, in particular to an air filter suitable for motorcycles. Background Art

[0002] See also Figure 1 and Figure 2 , which are respectively a schematic diagram and an exploded diagram of an existing air filter. The figure shows an existing air filter 9, which is connected to an engine (not shown), and includes an air filter body 93, an air filter element 94, a connecting pipe 95 and a resonance chamber 96. The air filter body 93 includes an air intake box 931, a filter element support 932 and an outer cover 933. The air filter element 94 is arranged on the filter element support 932. One end of the connecting pipe 95 is inserted into the air intake box 931, and the other end is connected to the engine. The resonance chamber 96 is connected to the connecting pipe 95 to eliminate the noise generated when the engine inhales.

[0003] However, if the resonance chamber 96 is not locked, the vibration generated by the engine operation will cause the resonance chamber 96 to vibrate, forming another source of noise. Therefore, in the existing air filter 9, the resonance chamber 96 is fixed to the air intake box 931 by a fixing structure 97, thereby reducing the vibration noise of the resonance chamber 96 due to the engine. However, since the resonance chamber 96 is placed outside, even a slight vibration noise will still affect the commercial quality of the vehicle.

[0004] The inventor, in the spirit of active invention, has been eager to think of an air filter that can solve the above-mentioned problems. After several studies and experiments, the present utility model has been finally completed. Utility Model Content

[0005] The main purpose of the utility model is to provide an air filter, which extends the connecting pipe to the sealed space and repositions the resonance chamber inside the sealed space, so that the resonance chamber can be away from the throttle valve of the engine, reduce the air flow disturbance inside the connecting pipe, increase the amount of air inhaled by the engine, improve the engine efficiency, and achieve the effect of increasing power. In addition, because the resonance chamber is accommodated in the sealed space, it has a better sound insulation effect than when it is placed outside, and can reduce the vibration noise of the resonance chamber caused by the engine.

[0006] To achieve the above-mentioned purpose, an air filter of the utility model is connected to an engine, and includes an air filter body, an air filter element, a connecting pipe and a resonance chamber. The air filter body includes an air intake box, a filter element support and an outer cover, and has a sealed space. The air filter element is arranged on the filter element support and accommodated in the sealed space to filter the air inhaled by the engine. The connecting pipe is inserted into the air intake box, one end of which extends to the sealed space, and the other end is connected to the engine to send the filtered clean air into the engine to be evenly mixed with the fuel and then burned. The resonance chamber is connected to the connecting pipe and accommodated in the sealed space to eliminate the noise generated when the engine inhales air.

[0007] The air filter may be located in front of the engine.

[0008] The resonance chamber can be fixedly mounted on the air filter body by a fixed structure.

[0009] The fixing form of the above-mentioned fixing structure can be one of fusion bonding, buckle joint, screw fixing and strap binding.

[0010] The above summary and the following detailed description are exemplary in nature and are intended to further illustrate the scope of the patent application of the present utility model. Other purposes and advantages of the present utility model will be described in the subsequent specific implementation methods and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of an existing air filter.

[0012] Figure 2 The following is an exploded view of the existing air filter.

[0013] Figure 3 It is a schematic diagram of an air filter according to a preferred embodiment of the utility model.

[0014] Figure 4 This is an exploded view of an air filter according to a preferred embodiment of the present invention.

[0015] Description of main component symbols:

[0016] 1 Air filter

[0017] 2 Engine

[0018] 21 Throttle valve

[0019] 3 Air filter body

[0020] 31 Air intake box

[0021] 32 filter element support

[0022] 33 outer cover

[0023] 34 Sealed Space

[0024] 4 Air filter element

[0025] 5 Connecting pipe

[0026] 6 Resonance Cavity

[0027] 7 Fixed structure

[0028] 9 Air filter

[0029] 93 air filter body

[0030] 931 airbox

[0031] 932 filter element support

[0032] 933 outer cover

[0033] 94 air filter element

[0034] 95 connecting pipe

[0035] 96 Resonance Cavity

[0036] 97 Fixed structure DETAILED DESCRIPTION

[0037] See also Figure 3 to Figure 4 , which are respectively a schematic diagram and an exploded diagram of an air filter of a preferred embodiment of the utility model. The figure shows an air filter 1, which is connected to an engine 2 and is located in front of the engine 2. The air filter 1 includes an air filter body 3, an air filter element 4, a connecting pipe 5, a resonance chamber 6 and a fixed structure 7. Among them, the air filter body 3 includes an air intake box 31, a filter element support 32 and an outer cover 33, and has a sealed space 34. The air filter element 4 is arranged on the filter element support 32 and accommodated in the sealed space 34 to filter the air inhaled by the engine 2. The connecting pipe 5 is inserted into the air intake box 31, one end of which extends to the sealed space 34, and the other end is connected to a throttle valve 21 of the engine 2 to send the filtered clean air into the engine 2 to mix with the fuel evenly and then burn it. The resonance chamber 6 is connected to the connecting pipe 5 and accommodated in the sealed space 34, and is fixed to the air filter body 3 by the fixed structure 7 to eliminate the noise generated when the engine 2 inhales.

[0038] In this embodiment, the fixing structure 7 is fixed by fusion bonding, and the number of the fixing structure 7 is one, and it is arranged on the inner wall of the air intake box 31. In another embodiment, the fixing structure 7 can be fixed by snap-fitting, screw fixing, and strapping, and the number of the fixing structures 7 is not limited. In order to further reduce the vibration noise of the resonance cavity 6, one or more fixing structures 7 can be added at any position of the air filter body 3 to achieve a better vibration noise suppression effect.

[0039] Through the above design, the air filter 1 of the utility model extends the connecting pipe 5 to the sealed space 34, and repositions the resonance chamber 6 inside the sealed space 34, so that the resonance chamber 6 can be kept away from the throttle valve 21 of the engine 2, and the air flow disturbance inside the connecting pipe 5 can be reduced when the engine 2 inhales air, thereby increasing the amount of air inhaled by the engine 2, improving the engine efficiency, and achieving the effect of increasing power. In addition, because the resonance chamber 6 is accommodated in the sealed space 34, it has a better sound insulation effect than when it is placed outside, and can reduce the vibration noise of the resonance chamber 6 caused by the engine 2.

[0040] The above embodiments are merely examples for the convenience of explanation. The scope of rights claimed by the present utility model shall be based on the scope of protection required by the patent application documents, and is not limited to the above embodiments.

Claims

1. An air filter connected to an engine, characterized in that: Included are: An air filter body, including an air inlet box, a filter element support and an outer cover, and having a sealed space; An air filter element is disposed on the filter element support and accommodated in the sealed space; a connecting pipe, inserted into the air intake box, with one end extending to the sealed space and the other end connected to the engine; and A resonance cavity is connected to the connecting pipe and is contained in the sealed space.

2. The air filter according to claim 1, characterized in that The air filter is located in front of the engine.

3. The air filter according to claim 1, characterized in that The resonance chamber is fixed on the air filter body by a fixed structure.

4. The air filter according to claim 3, characterized in that The fixing form of the fixing structure is one of fusion bonding, buckle joint, screw fixing and strap binding.

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