Air filter

Abstract

The utility model provides an air filter which is suitable for a general mechanical engine and is used for improving the connecting strength of an air filter shell and an air outlet pipe, ensuring the air tightness between the air outlet pipe and the air filter shell and preventing the air filter shell from falling off. The air filter is an iron-shell air filter and specifically comprises an air filter shell provided with a filter element, and an air outlet hole of the air filter shell extends outwards to form a turned-over edge; one end of the air outlet pipe penetrates through the air outlet hole from the outer side of the air filter shell and extends into the air filter shell; one part of the connecting piece is connected between the air outlet pipe and the turned-over edge, and the other part of the connecting piece is connected with the inner wall of the air filter shell in the air filter shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automobile air filter field, especially a kind of air cleaner. BACKGROUND

[0002] When the conventional air filter shell is assembled with the air outlet pipe, the outer wall of the air filter shell and the outer wall of the air outlet pipe are connected by a connecting piece. There is only one layer of weld between the connecting piece and the air filter shell, and there is also only one layer of weld between the connecting piece and the air outlet pipe. Once the weld fails, the connection between the air filter shell and the air outlet pipe will fail, which may cause the air filter shell to fall off. SUMMARY

[0003] The utility model provides an air cleaner for improving the connection strength of the air filter shell and the air outlet pipe and ensuring the air tightness between the air outlet pipe and the air filter shell, to avoid the air filter shell from falling off.

[0004] The technical scheme of the utility model is as follows:

[0005] The utility model provides an air cleaner, comprising:

[0006] An air filter shell with a filter element, the air filter shell has a flange extending outward from the air outlet hole;

[0007] An air outlet pipe, one end of the air outlet pipe extends into the air filter shell through the air outlet hole from the outside of the air filter shell;

[0008] A connecting piece, one part of the connecting piece is connected between the air outlet pipe and the flange, and the other part is connected to the inner wall of the air filter shell inside the air filter shell.

[0009] Preferably, the flange is an annular flange arranged around the air outlet hole.

[0010] Preferably, the connecting piece comprises: a first connecting part in the form of a sleeve, which is connected between the flange and the air outlet pipe;

[0011] A second connecting part in the form of a disc, the surface of the second connecting part is connected to the inner wall of the air filter shell inside the air filter shell.

[0012] Preferably, the first connecting part, the air outlet pipe and the flange form a three-layer welding design.

[0013] Preferably, the air cleaner further comprises:

[0014] A flange plate assembled on the air outlet side of the air outlet pipe.

[0015] Preferably, the air filter shell, the air outlet pipe and the connecting piece are made of iron.

[0016] The air filter has the advantages that:

[0017] The air filter has the advantages that:

[0018] In addition, in the present application, since the air outlet pipe and the air filter shell are connected by spot welding in the prior art, the welding method has gaps, so that the air tightness cannot be guaranteed; in the present application, the welding method between the connecting sheet and the air filter shell and the welding method between the connecting sheet, the flange and the air outlet pipe are changed to full welding, so that the air tightness between the air outlet pipe and the air filter shell can be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 is a structural schematic diagram of an air filter in the embodiment;

[0020] Figure 2 Fig. 2 is a sectional view of the air filter in the embodiment;

[0021] Figure 3 Fig. 3 is a local schematic diagram of assembly of a connecting sheet, an air outlet pipe and an air filter shell;

[0022] Figure 4 Fig. 4 is a local schematic diagram of assembly of a filter core, an air filter upper shell and an air filter lower shell;

[0023] Figure 5 Fig. 5 is a structural schematic diagram of the connecting sheet in the embodiment;

[0024] Explanation of reference signs: 1 - air filter housing; 11 - upper housing; 12 - lower housing; 101 - flange; 102 - air outlet cavity; 103 - air inlet cavity; 104 - mounting cavity; 2 - air outlet pipe; 3 - connecting plate; 31 - first connecting part; 32 - second connecting part; 4 - flange plate; 5 - air inlet pipe; 6 - filter element; 61 - upper box body; 62 - filter element body; 63 - lower box body. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the embodiments and the accompanying drawings. It should be understood that the description is only exemplary and is not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and techniques is omitted to avoid unnecessary confusion of the concept of the present application.

[0026] With reference to Figure 1 and Figure 2 The present application provides an air filter suitable for general mechanical engine, specifically an iron shell air filter, comprising: an air filter housing 1 provided with a filter element 6, a flange 101 extending outwardly from the air outlet hole of the air filter housing 1; an air outlet pipe 2, one end of the air outlet pipe 2 extending into the air filter housing 1 from the outside of the air filter housing 1 through the air outlet hole; a connecting plate 3, one part of the connecting plate 3 being connected between the air outlet pipe 2 and the flange 101, and the other part being connected to the inner wall of the air filter housing 1 inside the air filter housing 1.

[0027] In this embodiment, the air filter housing 1, the air outlet pipe 2 and the connecting plate 3 are all made of iron.

[0028] The air filter housing 1 extends outwardly at the air outlet hole to form a flange 101, and during assembly, the connecting plate 3, the flange 101 and the air outlet pipe 2 form a three-layer connection structure, and the connecting plate 3 and the air filter housing 1 form a two-layer connection structure.

[0029] The formed three-layer connection structure has higher connection strength than the two-layer connection structure formed by the traditional connecting piece and the air outlet pipe 2, specifically because: the three-layer connection structure means that more material is used for connection, more material means larger bearing area and higher shear resistance and tensile resistance, and this superposition effect makes the three-layer connection disperse more stress when subjected to external force, thereby reducing stress concentration and improving connection strength; in the three-layer connection structure, each layer of connection provides additional interface strength, and these interfaces are tightly combined through welding to form multiple strength points, which work together to enhance the strength of the entire connection structure; the three-layer connection structure has higher redundancy than the two-layer connection structure, so even if one of the layers of connection fails, the other two layers of connection can still maintain the stability of the structure, and this redundant design makes the three-layer connection structure have better resistance and higher safety when subjected to external forces such as impact and vibration.

[0030] In combination Figure 2 In this embodiment, the flange 101 is an annular flange 101 arranged around the air outlet hole, and the annular flange 101 forms a ring-shaped connection with a part of the connecting piece 3.

[0031] Referring to Figure 3 and Figure 5 In this embodiment, the connecting piece 3 includes: a first connecting part 31 arranged in a sleeve shape, which is connected between the flange 101 and the air outlet pipe 2; and a second connecting part 32 arranged in a disc shape, the surface of which is connected to the inner wall of the air filter housing 1 inside the air filter housing 1.

[0032] During assembly, the first connecting part 31 is first welded with the air outlet pipe 2, then the second connecting part 32 is assembled into the air filter housing 1 for full welding fixation, and finally the first connecting part 31 is welded and fixed with the flange 101, thereby forming a three-layer welding design of the first connecting part 31, the air outlet pipe 2 and the flange 101, both of which are fixed by full welding, and the second connecting piece 32 and the air filter housing 1 form a two-layer welding design.

[0033] Since the air outlet pipe and the air filter housing in the prior art are connected by spot welding, there is a gap in this welding method, so the air tightness cannot be guaranteed; the welding method between the connecting piece 3 and the air filter housing 1 and the welding method between the connecting piece 3, the flange 101 and the air outlet pipe 2 in the scheme of the present application are changed to full welding, so the air tightness between the air outlet pipe 2 and the air filter housing 1 can be guaranteed.

[0034] Referring to Figure 1 The air filter further includes a flange plate 4 assembled on the air outlet side of the air outlet pipe 2, which is used for fixed connection with the air inlet pipe flange plate of the next part (such as an engine) into which the filtered air of the air filter will flow.

[0035] In combination Figure 2 And Figure 4 In the air filter housing 1 of the embodiment, the air outlet holes are arranged on the upper housing 11, the filter element 6 is arranged in the cavity formed between the upper housing 11 and the lower housing 12, and the air inlet pipe 5 of the air filter is inserted from the air inlet hole on the upper housing 11 and passes through the filter element 6. The cavity formed between the upper housing 11 and the lower housing 12 is divided into the air inlet cavity 103 and the air outlet cavity 102 by the filter element 6, the air inlet of the air inlet pipe 5 enters the air inlet cavity 103, is filtered by the filter element 6, and then flows to the air outlet cavity 102, and is discharged outward through the air outlet hole on the upper housing 11, the air outlet pipe 2.

[0036] With reference to Figure 4 In the embodiment, the edge of the lower housing 12 facing the upper housing 11 extends outward with a first flange 101, and the edge of the upper housing 11 facing the lower housing 12 extends outward with a second flange 101, the second flange 101 partially covers the first flange 101, and the first flange 101 and the second flange 101 further form a mounting cavity 104.

[0037] With reference to Figure 4 The filter element 6 includes an upper box body 61, a filter element body 62, and a lower box body 63, the filter element body 62 is installed in the cavity formed between the upper box body 61 and the lower box body 63, and the air inlet pipe 5 is inserted from one side of the upper box body 61, sequentially passes through the upper box body 61, the filter element body 62, and the lower box body 63, and then extends into the air inlet cavity 103.

[0038] The circumferential edge of the upper box body 61 and the lower box body 63 protrudes outward to form a mounting portion, the mounting portion is assembled in the aforementioned mounting cavity 104, and the fixation in the air filter housing 1 is achieved.

[0039] It should be noted that each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0040] Although the preferred embodiments of the utility model have been described, those skilled in the art can make other changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0041] It also needs to be explained that in this paper, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, relationship terms such as "first" and "second" are used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations, nor can it be understood as indicating or implying relative importance. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements does not include those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a…" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

[0042] The above describes the technical solutions provided by the utility model in detail, and the principles and implementation modes of the utility model are described by applying specific examples. The above example is only used to help understand the utility model, and the content of the specification should not be understood as a limitation on the utility model. At the same time, for those skilled in the art, according to the utility model, there will be different forms of changes in specific implementation modes and application ranges, which do not need to be enumerated here, and the obvious changes or changes derived therefrom are still within the protection scope of the utility model.

Claims

1. An air cleaner characterized by comprising: The air filter comprises: an air filter housing (1) provided with a filter element (6), the air filter housing (1) being provided with a flange (101) outwardly extending from an air outlet hole; an air outlet pipe (2) having one end penetrating into the air filter housing (1) through the air outlet hole from the outside of the air filter housing (1); a connecting plate (3) having one part connected between the air outlet pipe (2) and the flange (101) and another part connected with the inner wall of the air filter housing (1) inside the air filter housing (1).

2. The air cleaner of claim 1, wherein The flange (101) is an annular flange arranged around the air outlet hole.

3. The air cleaner of claim 1, wherein The connecting plate (3) comprises a first connecting part (31) in the form of a sleeve arranged between the flange (101) and the air outlet pipe (2); a second connecting part (32) in the form of a disc arranged with its surface connected with the inner wall of the air filter housing (1) inside the air filter housing (1).

4. The air cleaner of claim 3, wherein The first connecting part (31), the air outlet pipe (2) and the flange (101) form a three-layer welding design.

5. The air cleaner of claim 1, wherein The air filter further comprises: a flange (4) arranged on the air outlet side of the air outlet pipe (2).

6. The air cleaner of claim 1, wherein The air filter housing (1), the air outlet pipe (2) and the connecting plate (3) are made of iron.

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