JP3010526U - Filter element of air cleaner unit - Google Patents

Abstract

(57) [Summary] [Purpose] By preventing turbulence from occurring during inhalation, it is possible to reduce intake air noise and suppress intake air loss due to turbulence while increasing intake air volume. To provide a filter element for the exposed type air cleaner unit. In a filter element 2 in which a filter material having a wavy cross section is formed in a tapered cylinder shape, and a large diameter side opening 2a thereof is connected to an intake duct of an engine,
The small-diameter side opening 2b of the filter element 2 is formed in a funnel shape, the root portion 6a is attached to the outlet of the funnel-shaped part 5, and the tip side 6b is reversed by a filter material toward the large-diameter side opening 2a. The sub-filter element 6 formed in a tapered cylindrical shape and having its tip closed is provided in the small diameter side opening.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of a filter element of an air cleaner unit of exposed element type installed in an automobile engine or the like.

[0002]

[Prior art]

 Conventionally, a cover type in which a filter element is housed in an air cleaner case connected to an intake duct has been generally used as an air cleaner device installed in an intake system of an automobile engine. The element exposed type that directly connects the filter element itself to the intake duct is known as an optional equipment or so-called after-part.

Since the filter element of the exposed element type air cleaner unit is exposed to the outside, the air intake efficiency is better than that of the covered type, and the effect of increasing the output of the engine can be obtained. For example, in sports-type passenger cars, existing items are often removed and used instead. However, since the installation space is limited in the engine room, various contrivances have been made to the shape and structure of the filter element in order to install a filter element with good suction efficiency.

FIG. 4 is a cross-sectional view showing an example of the conventional element exposure type air cleaner unit a. The filter element b is a corrugated filter wall made of a suitable filter material such as paper, cloth, or non-woven fabric. A synthetic rubber ring-shaped connecting member d having an intake duct connecting port c is formed at the end of the large diameter side of the element b, which is formed in a tapered cylindrical shape in cross section, and the end of the small diameter side is formed. A blind lid member e made of synthetic rubber is integrally formed by vulcanization adhesion. In this air cleaner unit a, the intake duct connection port c is fitted and fixed to a joint fitting h connected through a connection duct g made of rubber or the like, and the duct g is connected to an intake pipe f of the engine. It is designed to be attached to the engine.

The blind lid member e of the air cleaner unit a may be formed of a ring-shaped synthetic rubber only on the outer peripheral portion, and a lid such as a metal plate or a synthetic resin plate may be attached and fixed to the inner periphery thereof. .

The conventional air cleaner unit shown in FIG. 4 has a small occupying volume, that is, a relatively compact outer shape, because the filter element a is formed on the intake surface having a tapered cylindrical shape with a wavy cross section. Even if it is formed, it can take a large intake area, so it was designed so that more air can be efficiently taken in from a filter element with a small outer shape.

However, in the filter element b in the above-described conventional air cleaner unit a, when air is sucked from the tapered cylindrical filtering wall surface, turbulent flow is generated substantially directly below the blind lid member e. , It has been pointed out that this results in a loud air intake sound and a considerable loss of intake air.

[0008]

[Problems to be solved by the device]

 In view of such a point, the present invention makes it possible to reduce intake air noise by suppressing turbulent flow at the time of intake, suppress intake air loss due to turbulent flow, and increase intake air amount. It is an object of the present invention to provide a filter element of an exposed type air cleaner unit that is made possible.

[0009]

[Means for Solving the Problems]

 One of the configurations of the filter element of the present invention made for the purpose of solving the above-mentioned problem is to form a filter material having a corrugated cross section into a tapered cylindrical shape, and connect the large-diameter side opening to the intake duct of the engine. In the filter element formed as described above, the small-diameter side opening of the filter element is formed in a funnel shape, the root portion is attached to the outlet of the funnel-shaped portion, and the tip side is directed toward the large-diameter side opening. It is characterized in that a sub-filter element, which is formed in a reverse taper tubular shape with a material and has its tip closed, is provided in the opening portion on the small diameter side.

Another configuration of the filter element of the present invention is that an air funnel-shaped portion of a small-diameter side opening is deeply formed, and a sub-filter element formed in a taper cylindrical shape having a small diameter is formed at the outlet of the funnel-shaped portion. It is also characterized in that it is provided in a standing manner with the top portion closed.

In the above description, the filter material preferably has a wavy cross section in order to increase the filtration area of the intake air, but it does not necessarily have to have a wavy cross section.

[0012]

[Action]

 In the filter element of the present invention, the inside of the small-diameter side opening of the main filter element is formed in an air funnel shape, and the outlet of the funnel-shaped portion is connected with a sub-filter element having a small diameter taper tube in an upright or inverted state. Since the intake air passing through the main filter element is rectified by the rectifying action of the outer surface of the air funnel-shaped portion or the sub filter element, the intake air noise is reduced and turbulence is generated by the rectification. Difficult to reduce inhalation efficiency because it is difficult.

Further, in the filter element of the present invention, in addition to the intake air passing through the main element, the air is sucked through the sub filter element, so that the intake air amount can be increased without causing turbulence.

Further, in the filter element of the present invention, since the constituent parts of the sub filter element are all housed in the main filter element, even if the main filter element is equal to the size of the conventional product, the intake air amount It can be formed in many filter elements.

[0015]

[Embodiment] Next, an embodiment of the present invention will be specifically described with reference to the accompanying drawings. In FIG. 1, 1 is an air cleaner unit using the filter element of the present invention, 2 is a main filter element (hereinafter referred to as main element 2), 3 is an engine-side intake duct formed at the large-diameter side opening end of the main element 2. Connecting member for connecting to the edge member, 4 is an edge member formed at the small-diameter side opening end of the element 2, 5 is an air funnel portion formed by shaping the outer surface of the edge member 4, and 6 is the air Sub filter elements (hereinafter referred to as sub elements 6) provided continuously to the funnel portion 5 are shown.

In FIG. 1, the main element 2 is formed of a filter material made of cloth, paper, non-woven cloth or the like in a taper tube shape, but in order to form a large filtration area, the main element 2 is arranged along the circumferential direction. The cross section is formed in a corrugated cross section. The inner and outer surfaces of the main element 2 are covered with a metal mesh (not shown) for reinforcement, but may not be reinforced by the metal mesh.

The connecting member 3 shown in FIG. 1 is a ring made of synthetic rubber or the like integrated by vulcanizing and adhering to the large-diameter side opening end 2a of the main element 2 so as to be buried therein. The air intake duct connection port 3a is formed in the form of a ridge and a groove on the inner peripheral side. The intake duct connection port 3a is adapted to be fitted and fixed to a joint metal fitting JM which is connected to an intake pipe IN which constitutes an intake system of the engine through a collar CO made of rubber in this example.

At the upper end of the main element 2, a ring-shaped edge member 4 made of synthetic rubber or the like is vulcanized and bonded, and the shape of the outer surface is adjusted so that the outer surface functions as an air funnel. 5 is formed.

In the embodiment shown in FIG. 1, the air funnel portion 5 has its inlet side 5 a continuous with the outer surface of the edge member 4, and has a corrugated cross-section inside the outlet side similar to the main element 2. The small-sized sub-element 6 in which the filter material formed in the above is formed in a reverse taper cylinder shape and both surfaces thereof are reinforced by the metal mesh is integrally connected by vulcanization adhesion in the large-diameter side opening 6a. .

The sub-element 6 is integrally connected to the outlet side 5b of the air funnel portion 6 integrated with the edge member 4 in a state where the large-diameter side opening 6a is embedded, so that the small-diameter side of the element 6 is The opening 6b is positioned so as to project inside the main element 2. A lid member 7 made of synthetic rubber or the like for closing the opening is vulcanized and bonded to the small-diameter side opening 6b of the sub-element 6.

In the present invention, due to the rectifying effect of the air sucked into the main element 2, the air funnel member shown in phantom in FIG. 1 is provided inside the large-diameter side open end 2 a of the main element 2. It is desirable to provide 8. If this air funnel member 8 is provided, both the rectifying effect and the suction efficiency become more preferable.

From the above, an example of the filter element of the present invention is constructed. This filter element sucks air into the element 2 from the outer peripheral surface of the main element 2 at the same time and opens the small-diameter side opening of the main element 2. Is rectified by the funnel portion 5 formed in the section, and air is also sucked from the sub-elements 6 connected to the funnel portion 5, and these flow into the intake pipe IN side. At this time, the air sucked from the main element 2 is rectified by the substantially cone-shaped outer surface formed by the outer surface of the sub-element 6, and the rectified air is sucked from the sub-element 6, so that turbulence is generated. It is difficult to generate air, therefore the air intake noise is low, and air intake with high intake efficiency without turbulence is possible.

The clean air that has passed through the main element 2 and the sub-element 6 and is filtered is drawn into the intake pipe IN of the engine from the intake duct connection port 3a through the joint metal fitting JM and the rubber collar CO. The Rukoto.

Here, in the filter element 1 of the present invention, since the sub-element 6 continuously provided to the air funnel portion 5 is completely housed inside the main element 2, the entire filter element 1 is arranged. Since the outer shape does not become large, the overall air cleaner can be made compact while increasing the intake air amount.

FIG. 3 shows another example of the filter element of the present invention. The filter element 11 also includes the main element 2 and the connecting member 3 like the filter element 1 of the present invention described above.

Here, at the small-diameter side opening end 2b of the main element 2, a truncated cone member 51 made of rubber, paper, cloth, non-woven fabric, ceramics or the like whose inner and outer peripheral surfaces are formed in a funnel shape is large. The inner end of the cone member 51 functions as an air funnel portion and the outer end of the cone member 51 functions as an air flow rectifying cone by being vulcanized and bonded to the edge member 4 in which the small diameter end portion 2b of the element 2 is embedded at the radial end portion 51a. Is provided. Like the sub-element 6, the small-diameter side opening 51b of the truncated cone member 51 is a small taper in which the filter material is formed into a tapered cylindrical shape having a corrugated cross section and is reinforced on both sides with a metal mesh. The tubular sub-element 61 is integrally connected by vulcanization adhesion or the like in an upward state (upright state).

That is, the large-diameter side opening 61 a of the sub-element 61 is integrally connected to the small-diameter side end opening 51 a of the truncated cone member 51, so that the small-diameter side opening 61 a of the element 61 is formed. The portion 61b is located at the entrance of the truncated cone member 51. Further, a shell-shaped cap member 9 that closes the opening of the small-diameter side opening 61b of the sub-element 61 is vulcanized and adhered to the small-diameter side opening 61b.

In the above-described filter element 11 of the present invention, as in the example of the filter element of the present invention described above, the air around the main element 2 flows through and flows into the sub-element at the same time when the engine is started. The air above 61 passes through the sub-element 61 and flows into the main element 2 while being rectified by the funnel shape of the truncated cone member 51. Then, the clean air that has passed through the main element 2 and the sub-element 61 is supplied from the intake duct connection port 3 through the joint metal fitting JM and the rubber collar CO (not shown) as in the previous embodiment. Inhaled at IN.

Here, the air sucked from the main element 2 is sucked while receiving the rectifying effect by the outer surface of the truncated cone member 51, and the air sucked from the sub element 61 has an inner surface as an air funnel. Since the air passing through the sub-element 61 is rectified along the inner peripheral surface of the functioning frusto-cone member 51 and the outer peripheral surface of the cap-shaped member 9 having a shell-like shape, the inhaled air is hard to be turbulent. There is almost no reduction in the suction efficiency of the element. Further, the filter element 11 is also arranged in such a manner that the truncated cone member 51, the sub-element 61 and the cap member 9 are all completely housed inside the main element 2, and is configured as a whole as a compact, Wide application range without increasing the volume occupied in the engine room.

[0030]

[Effect of device]

 The present invention is as described above, and a portion functioning as an air funnel is formed in the small diameter side opening of the main filter element having a tapered cylindrical shape, and the sub filter element is attached to the outlet of the funnel portion so as to be connected thereto. As a result, turbulent flow is less likely to occur in the inhaled air, and therefore, the air inhalation noise is small, and the turbulent flow does not lower the inhalation efficiency.

Further, since the sub filter element is provided in the main filter element, air can be sucked from the sub element at the same time as the main filter element, and more air can be taken in without increasing the intake resistance. Become.

Moreover, since the constituent members of the sub-filter element are all arranged inside the main filter element completely, the occupied outer shape retains the original main filter element even if the intake air amount increases. Therefore, if the filter element has the same amount of intake air as the conventional product, the outer shape can be made more compact, and the types of vehicles that can be applied as after-sales parts will be expanded.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an example of a filter element of the present invention.

2 is a perspective view of the filter element of FIG. 1. FIG.

FIG. 3 is a vertical sectional view of another example of the filter element of the present invention.

FIG. 4 is a vertical cross-sectional view of a filter element in a conventional air cleaner unit.

[Explanation of symbols]

 1,11 Invented filter element 2 Main element 2a Large-diameter side end 2b Small-diameter side end 3 Connection member 3a Intake duct connection port 4 Edge member 5 Funnel portion 51 Conical cone member 6,61 Sub-element IN Intake pipe CO rubber Made color JM joint bracket

Claims (3)

[Scope of utility model registration request] 1. A filter element in which a filter material having a corrugated cross section is formed into a tapered cylindrical shape, and a large-diameter side opening of the filter material is connected to an intake duct of an engine. The small-diameter side opening of the filter element is funnel-shaped. In the filter element, a sub-filter element having a root portion attached to the outlet of the funnel-shaped portion and having a tip end side facing the large-diameter side opening and formed in a reverse taper shape and having the tip closed is formed in the filter element. A filter element for an air cleaner unit characterized by being provided. 2. A filter element in which a filter material having a corrugated cross section is formed into a taper cylinder shape, and a large-diameter side opening of the filter material is connected to an intake duct of an engine. A sub-filter element having a portion formed, a root portion connected to the outlet of the funnel-shaped portion, and a distal end side formed in a tapered cylindrical shape toward the small diameter side opening of the filter element to close the front end, A filter element for an air cleaner unit, which is provided inside the filter element. 3. The filter element for an air cleaner unit according to claim 1, wherein an air funnel is formed inside the large-diameter-side opening end of the tapered cylindrical filter element.