JPH04118125U - square air cleaner - Google Patents

Abstract

(57) [Summary] [Purpose] An opening is provided in the top wall of a rectangular air cleaner to house a filter element with an inverted trapezoidal side, which has a filter body with a sequentially changing pleat width, and the top surface is pressed with a holder. death,
Maintains good airtightness, prevents increase in ventilation resistance, and facilitates filter element replacement. [Structure] An opening 3 is provided in the upper wall of the housing 1.
The holding body 4 is attached to the housing 1, and the inlet side of the set of surrounding frames 5 is narrowed downward and inclined to fit the opening 3, and is fixed in the housing 1. The folding width is gradually reduced, and a frame plate 22 having two opposite sides having an inverted trapezoid is attached around the folded width, and a packing 6 is arranged around the periphery of the frame plate 22 to form a filter element 2 having both sides having an inverted trapezoid. , an enclosure body 5 in the housing 1
The upper surface of the filter element is pressed by the holder 4.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an improvement of a rectangular air cleaner used in an internal combustion engine.

0002

[Conventional technology]

Air cleaners for internal combustion engines, such as those mounted on vehicle towers, are subject to restrictions on installation location. Due to the limited availability and ease of maintenance, the one shown in Japanese Utility Model Application Publication No. 64-41660 is Ru. This air cleaner has a rectangular shape with a box-shaped body and one side of the cover. The edges are connected to form a housing, and the opposite side wall of the body is opened with a shaft member. The filter element is housed in the housing, and the surrounding area on one side is The arranged packing material is sandwiched between the body and the cover, and the clamp is attached to the other side wall of the body. If the filter element is fastened with a lamp, the clamp must be engaged to replace the filter element. Remove the stopper, rotate the cover upwards, tilt the side wall to the side, and remove the filter element. Pull it out to the side. The new filter element is then placed into the housing and the side wall Stand up, close the cover, and lock the clamp to complete the replacement work.

0003

[Problem that the idea aims to solve]

For this rectangular air cleaner, when replacing the filter element, first clean it. Unlatch the lip, lift the cover and fold the side wall outward to remove the It is a mouth, and elements must be taken in and out from here, which is time-consuming. Also Since the filter element is square, make sure to tighten the square packing material evenly. Multiple clips are required to maintain tightness, resulting in a large number of parts. In addition, the filter media has the same width. It is folded into a rectangular shape to prevent air flowing into the air cleaner from the inlet. Various problems such as flow concentrating on some folds, becoming an obstruction to flow and increasing ventilation resistance. There is.

0004

[Means to solve the problem]

This invention has a rectangular shape on the top wall of a box-shaped housing with an inlet and an outlet on both sides. An opening is provided, and a retaining plate that extends through the opening and has a hook at one end is rotatable. and attach a set of rectangular frame plates to the inner peripheral surface of the housing, with their upper edges attached to the openings. Both side walls of the housing are brought into contact with the two opposite sides, and an inverted stand is placed between the two surrounding frames. At least the lower part of the enclosure on the inlet side is placed on the outlet side so that a groove space of the same shape is formed. The folding width is gradually reduced from one end to the other. The top surface of the folds forms a rectangular filtration body, and its circumferential surface is separated by two opposing sides. It is airtightly attached to a box frame-shaped frame board with one side having an inverted trapezoidal shape and the other two sides having a rectangular shape. Furthermore, the periphery of the sloped surface on one side of the frame plate or the sloped surfaces on both sides has rectangular frame-like elasticity. The filter element has an inverted trapezoidal shape on both sides. , this filter element is disposed between the surrounding frames in the housing, and the filter element is placed between the surrounding frames in the housing, and Hook the stopper to the side wall edge of the housing, press the top surface of the frame plate, and press the packing against the surrounding frame. This is what I did.

[0005]

[Effect]

A truncated rectangular pyramid shape is formed in the inverted trapezoidal groove space formed between the surrounding frames in the housing. The filter element is housed, and there is no pressure from the holder on the top surface of the filter element. The pressure becomes a force in the lateral direction, applying surface pressure evenly to the packing, ensuring airtightness. . Air flowing into the housing from the inlet flows through each fold along the folds that increase in sequence. flows evenly between.

[0006]

【Example】

Figure 1 shows an embodiment of this invention, which has a cylindrical inlet 11 near the right end of the bottom wall, and a cylindrical inlet 11 on the left side. A filter is placed in a box-shaped housing 1 made of synthetic resin that has a cylindrical outlet 12 in the center of the side wall. The main element 2 is housed therein. The housing 1 has a rectangular opening 3 in its upper wall. and a pair of pivot ribs provided approximately in the center of the upper wall of the housing 1 across the opening 3. 13, has a hook-shaped cross-section hooking part 41 at one end, and the center is gently curved downward. A holder 4 made of a plate spring and having a pressing portion 42 formed therein is rotatably attached. ing. On the inner peripheral surface of the housing 1, a pair of square surrounding frames 5, 5 are provided around the opening 3. The upper edges are brought into contact with the two sides facing the walls on both sides, and the lower part is narrowed. It is tilted and airtightly fixed, and an inverted trapezoidal groove space is formed between the surrounding frames 5, 5. . The filter element 2 has a pleated width from one end to the other as shown in FIG. Filter paper that is successively folded to the required length to create a rectangular top surface of the folds. The filter body 21 is made of The filtration body 21 is placed in a box frame-like frame plate 22 made of synthetic resin, and the peripheral side of the filtration body 21 is made airtight with adhesive. Furthermore, elastic packing having a square frame shape with a rectangular cross section is attached to both side peripheries of the frame plate 22. 6 and 6 respectively, and the two sides form an inverted trapezoidal shape. this The filter element 2 is inserted into the housing 1 through the opening 3 in the upper wall of the housing 1. After being inserted, the packing 6 is in full contact with each of the surrounding frames 5, and the surrounding frames 5, 5, and the holder 4 on the upper wall of the housing 1 holds the hook 41 of the housing 1. The pressing part 4b presses the top surface of the frame plate 22 of the filter element 2 by being hooked to the edge of the side wall. The packing 6 is pressed against the surrounding frame 5 and is airtightly housed in the housing 1. ing.

[0007] Furthermore, one opposing side surface of the frame plate 22a is shaped like an inverted right-angled trapezoid, as shown in FIG. Both sides of the filter element 2a may be shaped like an inverted right-angled trapezoid; in this case, is a pair of surrounding frames 5 and 7 in the housing 1 in accordance with this filter element 2a. Of these, it is only necessary to tilt the enclosure frame 5 on the inlet side. The packing 6a is only required on the outlet side.

[0008] Furthermore, in order to facilitate the removal of the filter elements 2 and 2a, these flaps are For the filter elements 2 and 2a, handles may be provided on the upper surfaces of the frame plates 22 and 22a. good. In these rectangular air cleaners, the hook portion 4a of the holder 4 is attached to the housing. By removing it from the side wall edge of the filter element 1 and rotating it, the filter element 2, 2a is immediately removed. can be drawn out. When storing, insert new filter elements 2 and 2a into opening 3. , push it in along the surrounding frame 5, rotate the holder 4, and attach the hook 4a to the housing 1 side. All you have to do is hang it on the edge of the wall, and it will also ensure airtightness. The assembled air cleaner is located at the inlet A filter element 2, into which air is introduced from 11, and the folds become higher as it goes inside; Sequentially disperse and evenly flow into each fold of 2a.

[0009]

[Effect of the idea]

As described above, the present invention provides an opening in the upper wall of the air cleaner housing, and Both sides of the filter body with the pleat width gradually decreasing toward the other end are attached. A trapezoidal filter element is formed by a pair of surrounding frames inside the housing. Since it is stored in the groove space of the shape and the upper surface is pressed by the holder, the holder hook part will not stop. The filter element can be easily taken in and out by simply rotating the filter holder, and many Filter elements can be held without using clips. Also, the filter The inverted trapezoidal side surface of the element converts the pressing force applied to the top surface into a horizontal force like a wedge. On the contrary, by pressing the slanted enclosure body, the packing is pressed into contact and a sufficient airtightness is ensured. It will be done. The air flowing into the air cleaner is neatly arranged along the increasing folds. Since the flow is evenly distributed to each fold, the folds on the inlet side do not become an obstruction and increase ventilation resistance. is prevented.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a rectangular air cleaner according to the present invention.

2 is a perspective view of a filter element related to the rectangular air cleaner of FIG. 1. FIG.

FIG. 3 is a sectional view of a rectangular air cleaner showing another embodiment of the present invention.

[Explanation of symbols]

1 Housing 2, 2a Filter element 3 Aperture 4 Holding body 5, 7 Surrounding frame body 6, 6a packing 11 Entrance 12 Exit 22, 22a Frame board

Claims (1)

[Scope of utility model registration request] Claim 1: A rectangular opening is provided in the upper wall of a box-shaped housing having an inlet and an outlet on both sides, and a holding plate with a hook at one end is rotatably attached to the opening.
A pair of rectangular surrounding frames are brought into contact with the inner circumferential surface of the housing, with their upper edges in contact with the two sides opposite the housing side walls of the opening, and at least the lower part of the surrounding frame on the inlet side is placed on the outlet side. A box that is tilted toward the surface and airtightly fixed, the fold width is gradually reduced from one end to the other, and the two opposing sides of the box have an inverted trapezoidal shape and the other two sides have a rectangular shape. A filter element is airtightly attached to a frame-shaped frame plate, and a rectangular frame-shaped elastic packing is fixed to the periphery of an inclined surface on at least one side of the frame plate, so that both sides have an inverted trapezoidal shape. the filter element is disposed between the surrounding frames in the housing, the hooking portion of the holder is hooked to the side wall edge of the housing and the upper surface of the frame plate is pressed, and the packing is brought into pressure contact with the surrounding frame. square air cleaner.