Air filter with noise reduction structure

Abstract

The utility model belongs to the technical field of internal combustion engines, and provides an air filter with a noise reduction structure, which comprises a hollow shell provided with an air inlet and an air outlet, a filter element arranged in the shell and used for filtering air, and a spoiler arranged in the shell and positioned at the air inlet, the baffle plate is arranged in the shell to divide the inner cavity of the shell into a filter cavity and an air inlet cavity, the filter element is arranged in the filter cavity, an air vent is formed between the baffle plate and the inner wall of the shell, and in a working state, fluid passes through the baffle plate through the air vent and enters the filter cavity. The air filter with the noise reduction structure is simple in structure, reasonable in design, stable in air inlet and low in noise.

Description

Technical Field

[0001] The utility model relates to the technical field of internal combustion engines, in particular to an air filter with a noise reduction structure. Background Art

[0002] Internal combustion engine, commonly known as engine, air filter as an important part of the internal combustion engine (i.e. engine), the quality of its design seriously affects the practicability and economy of the engine.

[0003] However, during use, the air filter in the prior art generates a large amount of noise due to the high flow rate of air entering the air filter, which affects the practicality and economy of the engine. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide an air filter with a noise reduction structure to solve or alleviate the above problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an air filter with a noise reduction structure, comprising a hollow shell, the shell being provided with an air inlet and an air outlet, the shell being provided with a filter element for filtering air, and also comprising a baffle, the baffle being arranged in the shell and located at the air inlet to separate the inner cavity of the shell into a filter cavity and an air inlet cavity, the filter element being arranged in the filter cavity, and an air vent being formed between the baffle and the inner wall of the shell, and in a working state, the fluid passes through the air vent over the baffle and enters the filter cavity.

[0006] Furthermore, the shell includes a shell and a cover body detachably buckled on the shell, the spoiler includes a first plate body arranged on the shell and a second plate body arranged on the cover body, and when the cover body and the shell are buckled, the first plate body and the second plate body are in contact with each other.

[0007] Furthermore, the vent is formed between the cover body and the second plate body.

[0008] Furthermore, the air inlet hole of the filter element is arranged on the outer peripheral wall of the filter element facing the side wall of the shell.

[0009] Furthermore, an air guide plate is arranged in the filter cavity, and the air guide plate is arranged at the vent.

[0010] Furthermore, a locking assembly is also included, and the locking assembly includes:

[0011] A locking hole, which is arranged on the outer side wall of the cover body;

[0012] a locking member in a hook shape and movably connected to the housing; and

[0013] A control structure for controlling the position of the locking member;

[0014] Wherein, in the working state, force is applied to the control structure so that the locking member is inserted into the locking hole, and in the non-working state, force is applied to the control structure so that the locking member is separated from the locking hole.

[0015] Furthermore, the control structure includes a control arm, a first end of the control arm is hinged to the shell, and a middle or second end is hinged to the locking member, and force is applied to the control arm to move the control arm, thereby controlling the position of the locking member.

[0016] Furthermore, an operating portion is provided at the second end of the control arm.

[0017] Furthermore, the operating portion is bent in a direction away from the side wall of the shell.

[0018] Furthermore, the operating part is an operating ring.

[0019] Furthermore, the spoiler is arc-shaped, and two ends of the spoiler are respectively fixedly connected to the inner wall of the shell.

[0020] Beneficial effects of the utility model:

[0021] The air filter with noise reduction structure provided by the utility model has a simple structure and a reasonable design. By arranging a baffle in the shell, the fluid can enter the interior of the air filter more evenly, so that the engine's air intake is smoother, and the sound of the engine when running at no load and under load is softer, and no sharp and harsh noise is generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 A front view of an air filter with a noise reduction structure provided by an embodiment of the utility model;

[0024] Figure 2 for Figure 1 An enlarged view of section A is shown;

[0025] Figure 3 for Figure 1 A cross-sectional view of an air filter having a noise reduction structure shown;

[0026] Figure 4 for Figure 3 An enlarged view of section B is shown;

[0027] Figure 5 for Figure 1 A combined three-dimensional view of the housing of the air filter with a noise reduction structure and the air filter;

[0028] Figure 6 for Figure 1 A three-dimensional view of the cover of the air filter with a noise reduction structure is shown.

[0029] Reference numerals:

[0030] 110, housing; 120, cover; 210, first plate; 220, second plate; 201, vent; 300, air guide plate; 410, locking hole; 420, locking member; 430, control arm; 431, operating unit; 500, filter element. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0032] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] like Figure 1-6 As shown, the utility model provides an air filter with a noise reduction structure, including a hollow shell, the shell is provided with an air inlet and an air outlet, a filter element 500 for filtering air is provided in the shell, and also includes a baffle, the baffle is arranged in the shell and located at the air inlet to separate the inner cavity of the shell into a filter cavity and an air inlet cavity, the filter element 500 is arranged in the filter cavity, and an air vent 201 is formed between the baffle and the inner wall of the shell, and in a working state, the fluid passes through the air vent 201 over the baffle and enters the filter cavity.

[0038] When in use, under the action of the suction force of the engine cylinder, a negative pressure is formed behind the air outlet of the air filter. Under the action of the negative pressure, the fluid (i.e., air) is sucked into the air filter and finally enters the cylinder through the intake pipe. Specifically, in this process, the fluid needs to pass through the air vent 201 to pass over the baffle plate, so as to achieve the purpose of reducing the fluid speed. At the same time, since the space of the filter cavity is relatively large, the fluid enters the larger filter cavity after passing through the air vent, thereby further reducing the fluid speed, and then the fluid can enter the interior of the air filter more evenly, so that the engine's air intake is more stable, so that the sound of the engine when running at no load and load is softer, and no sharp and harsh noise is generated.

[0039] In one embodiment, the housing includes a shell 110 and a cover 120 detachably buckled on the shell 110, and the spoiler includes a first plate 210 disposed on the shell 110 and a second plate 220 disposed on the cover 120, and when the cover 120 and the shell 110 are buckled, the first plate 210 and the second plate 220 are attached to each other. Specifically, the first plate 210 and the shell 110 are formed by integral injection molding, and the second plate 220 and the cover 120 are formed by integral injection molding.

[0040] During the manufacturing process, the depths of the first plate body 210 and the housing 110 can be kept consistent, and the depths of the second plate body 220 and the cover body 120 can be kept consistent, thereby achieving the purpose of facilitating assembly and manufacturing.

[0041] In one embodiment, a vent 201 is formed between the cover 120 and the second plate 220. The air inlet of the filter element 500 is disposed on the outer peripheral wall of the side wall of the filter element 500 facing the housing 110. After the fluid enters the filter cavity through the vent 201, it needs to turn to enter the filter element 500 from the air inlet of the filter element 500, thereby achieving the purpose of further improving the uniformity and stability of the fluid entering the interior of the air filter.

[0042] Preferably, an air guide plate 300 is provided in the filter chamber, and the air guide plate 300 is arc-shaped. The air guide plate 300 is provided at the vent 201. Through the air guide plate 300, the fluid entering the filter chamber is more evenly distributed in the filter chamber under the action of the air guide plate 300, thereby further reducing the noise problem caused by unstable air intake.

[0043] In one embodiment, a locking assembly is further included, and the locking assembly is used to lock the cover 120 and the housing 110. The locking assembly includes a locking hole 410, a locking member 420 and a control structure.

[0044] The locking hole 410 is formed on the outer wall of the cover body 120. The locking member 420 is hook-shaped and is movably connected to the housing 110. The control structure is used to control the position of the locking member 420.

[0045] Specifically, the locking member 420 has a locking position and an unlocking position. In the working state, by applying force to the control structure, the locking member 420 is inserted into the locking hole 410, that is, the locking member 420 is placed in the locking position, thereby locking the cover 120 and the housing 110. In the non-working state, by applying force to the control structure, the locking member 420 is separated from the locking hole, that is, the locking member 420 is placed in the unlocking position, thereby achieving the purpose of disassembling the cover 120.

[0046] In this embodiment, a locking assembly is provided to facilitate the disassembly and installation of the cover body 120 .

[0047] In one embodiment, the control structure includes a control arm 430, wherein a first end of the control arm 430 is hinged to the housing 110, and a middle portion or a second end of the control arm 430 is hinged to the locking member 420, and a force is applied to the control arm 430 to move the control arm 430, thereby controlling the position of the locking member 420. In this embodiment, the middle portion of the control arm 430 is hinged to the locking member 420.

[0048] Specifically, by applying force to the control arm 430, the control arm 430 rotates around its own hinge centerline, thereby achieving the purpose of changing the position of the locking member 420. Specifically, when the control arm 430 rotates around its own hinge centerline in the direction close to the cover body 120, the locking member 420 moves away from the housing 110, thereby achieving the purpose of separating the locking member 420 from the locking hole 410. When the control arm 430 rotates around its own hinge centerline in the direction away from the cover body 120, the locking member 420 moves towards the direction close to the housing 110, and the hook of the locking member 420 is inserted into the locking hole 410, so that the cover body 120 is tightly buckled on the housing 110.

[0049] Preferably, when the control arm 430 places the locking member 420 in the locking position, the control arm 430 tilts toward the shell 110 to prevent the control arm 430 from swinging and automatically unlocking due to the elastic force between the shell 110 and the cover 120 .

[0050] Preferably, an operating portion 431 is provided at the second end of the control arm 430 to facilitate the rotation of the control arm 430 .

[0051] Preferably, the operating portion 431 is bent in a direction away from the side wall of the housing 110 , so that when the control arm 430 places the locking member 420 in the locking position, the operating portion 431 and the housing 110 have a moving distance, thereby achieving the purpose of easy operation.

[0052] In one embodiment, the operating portion 431 is an operating ring.

[0053] In one embodiment, the baffle is arc-shaped, and both ends of the baffle are fixedly connected to the inner wall of the housing. The baffle is arc-shaped, so that the baffle is evenly covered outside the filter element 500, which can have a better guiding effect on the fluid.

[0054] Preferably, a plurality of locking assemblies are provided, and the plurality of locking assemblies are sequentially spaced around the outer side wall of the housing.

[0055] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. An air filter with a noise reduction structure, comprising a hollow shell, the shell being provided with an air inlet and an air outlet, and a filter element (500) for filtering air being provided in the shell, characterized in that: It also includes a baffle, which is arranged in the shell and located at the air inlet to separate the inner cavity of the shell into a filter cavity and an air inlet cavity. The filter element (500) is arranged in the filter cavity. A vent (201) is formed between the baffle and the inner wall of the shell. In the working state, the fluid passes through the vent (201) over the baffle and enters the filter cavity.

2. The air filter with a noise reduction structure according to claim 1, characterized in that: The housing comprises a shell (110) and a cover (120) detachably fastened to the shell (110); the spoiler comprises a first plate (210) arranged on the shell (110) and a second plate (220) arranged on the cover (120); and when the cover (120) and the shell (110) are fastened together, the first plate (210) and the second plate (220) are in contact with each other.

3. The air filter with a noise reduction structure according to claim 2, characterized in that: The vent (201) is formed between the cover body (120) and the second plate body (220).

4. The air filter with a noise reduction structure according to claim 3, characterized in that: The air inlet hole of the filter element (500) is arranged on the outer peripheral wall of the side wall of the filter element (500) facing the housing (110).

5. The air filter with a noise reduction structure according to any one of claims 1 to 4, characterized in that: An air guide plate (300) is arranged in the filter cavity, and the air guide plate (300) is arranged at the vent (201).

6. The air filter with a noise reduction structure according to any one of claims 2 to 4, characterized in that: Also included is a locking assembly, the locking assembly comprising: A locking hole (410) disposed on the outer side wall of the cover body (120); a locking member (420) in the shape of a hook and movably connected to the housing (110); and A control structure, used for controlling the position of the locking member (420); Wherein, in the working state, force is applied to the control structure so that the locking member (420) is inserted into the locking hole (410); in the non-working state, force is applied to the control structure so that the locking member (420) is separated from the locking hole.

7. The air filter with a noise reduction structure according to claim 6, characterized in that: The control structure comprises a control arm (430), wherein a first end of the control arm (430) is hinged to the housing (110), and a middle part or a second end is hinged to the locking member (420). By applying force to the control arm (430), the control arm (430) is moved, thereby controlling the position of the locking member (420).

8. The air filter with a noise reduction structure according to claim 7, characterized in that: The second end of the control arm (430) is provided with an operating portion (431).

9. The air filter with a noise reduction structure according to claim 8, characterized in that: In the working state, the operating portion (431) is bent in a direction away from the side wall of the housing (110).

10. The air filter with a noise reduction structure according to claim 8 or 9, characterized in that: The operating portion (431) is an operating ring.

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