JPH1015328A - Air filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize storage of a plane-view W-shaped filter element in an air filter in which the filter element is held in the inside of the body of a case so as to be freely taken in and out. SOLUTION: A receiving member 19 along the curved shape of the rear face of a filter element 4 is provided in the air outflow port 3 of the body of a case 1. On an air inflow port 2 side, a muntin 22 abuts on the top 7 of the front central part of the filter element 4. Horizontal muntins 23 are fixed to the muntin 22. Plane-view trapezoidal pressing pieces 25 are stuck to the horizontal muntins 23 on both sides of the muntin 22. The internal surfaces of the V-shaped parts on both sides of the filter element 4 are pressed by inclined plates 27 on both sides of the pressing pieces 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter element exchange type air filter.

[0002]

2. Description of the Related Art An air filter installed inside a building air conditioner has an air inlet,
An air outlet is provided on the rear surface, and a W-shaped filter element in a plan view is housed inside the main body case such that valleys of V-shaped portions on both sides thereof face the air inlet. In addition, while providing a receiving member of the filter element at the air outlet of the main body case,
A holding member for the filter element is detachably attached to the air inlet.

[0003]

In the conventional air filter as described above, the receiving member on the side of the air outlet is provided with a receiving member shaped along the rear surface of the W shape of the filter element. The pressing member on the side is formed of a flat pre-filter or a longitudinal ridge, and only presses the front surface of the filter element in a planar manner.

[0004] For this reason, the pressing from the front surface (air inlet side) of the filter element becomes insufficient, and it is possible to prevent the filter element from vibrating under the influence of wind and from deformation such as swelling due to the processing habit of the filter element. In addition, there was an inconvenience such as rattling of the filter element during transportation.

Therefore, an object of the present invention is to stabilize a filter element housed in a main body case.

[0006]

In order to achieve the above object, the present invention provides an air inlet,
An air outlet is provided on the rear surface, and the valleys of the V-shaped portions on both sides of the filter element connected in a W-shape in plan view are housed inside the main body case so that the valleys of the V-shaped portions face the air inlet. An air filter in which a receiving member for the filter element is provided at the outlet, and a pressing member for the filter element is detachably attached to the air inlet, and the filter element is pressed from both front and rear surfaces by the receiving member and the pressing member. , The receiving member is horizontally attached to two longitudinal ridges provided corresponding to the rear tops of the V-shaped portions on both sides of the filter element, and between the longitudinal ridges and outside of each longitudinal ridge. And three guide plates having guide sides along the rear surface of the filter element, The pressing member, and Tate棧 attached detachably to said air inlet in response to the top of the front side center of the filter element, mounted on either side of the vertical rungs,
Further, the filter element is constituted by a pair of pressing pieces which respectively contact the inner surfaces of the V-shaped portions on both sides of the filter element.

The pair of holding pieces of the holding member are bent by bending a strip-shaped metal piece to form a V
Both ends of the holding piece were fixed in a trapezoidal shape consisting of an inclined plate abutting on the inner surface of the shape and a connecting plate connecting the two inclined plates to each other, and fixed to the transverse ridges orthogonal to the longitudinal ridges. Configuration can be taken.

According to the above construction, the back surface (outflow side) of the filter element is received by the three guide plates along the W-shaped bent surface, and the front surface (inflow side) is attached to both sides of the central longitudinal ridge. The pressed pieces come into contact with the inner surfaces of the V-shaped portions on both sides of the filter element, whereby the filter element can be stably pressed between the filter element and the guide plate according to the bent shape of the filter element.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the air filter of the embodiment has a rectangular frame-shaped main body case 1. The front and rear surfaces of the main body case 1 are open, and the front surface is an air inlet 2 and the rear surface is an air outlet 3.

As the filter element 4, four sheets each containing a filter paper 6 folded in a zigzag shape inside a channel-shaped square frame 5 are used, and the adjacent square frames 5 can be bent at three places into a folding screen shape. It is connected and has a W-shape in plan view, and the surface where the valleys of the V-shaped portions on both sides are opened is the front surface. One top 7 in the center of the front and 2 on both sides on the back
One top 7a, 7a is formed.

The air filter 4 is housed in the main body case 1 so that the front surface faces the air inlet 2.

The air outlet 3 of the main body case 1 has two tops 7 at the rear side of the filter element 4.
Two longitudinal ridges 8 are fixed at a position corresponding to a. As shown in FIG. 2, the cross section of the longitudinal ridge 8 is bent in a concave shape, and the top 7 on the rear side of the filter element 4 is formed.
The shape matches the angle of a.

In addition, between the longitudinal ridges 8 and between the bent edges 9 on both sides of the air outlet 3, the three guide plates at the center and on both sides thereof are located at an intermediate height of the longitudinal ridges 8. 1
1, 11a, 11a are attached.

These guide plates 11, 11a, 11a
As shown in FIG. 2, is connected between the longitudinal ridge 8 and the bent edges 9 on both sides, and is welded at the longitudinal ridge 8 and the bent edge 9 respectively, and the guide plates 11a, 11
The side of “a” is welded to the inner surface of the side wall 12 of the main body case 1.

The center guide plate 11 has a cut 13 (see FIG. 2) formed along the thickness of the rectangular frame 5 of the filter element 4 at the portion of the longitudinal ridge 8, and an isosceles triangle from the cut 13 is formed. The filter element 4 protrudes forward, and its two inclined sides 14 abut against the surface of the filter paper 6 of the V-shaped portion at the center of the rear surface of the filter element 4.

The guide plates 11a on both sides have a right-angled triangular shape, and the inclined sides 14a thereof extend along both sides of the rear surface of the filter element 4.

Further, the lower surface of the upper wall 15 of the main body case 1,
Opposite W-shaped holding frames 17 are fixed to the upper surface of the lower wall 16, and sponge tape 18 is attached to the front side of each holding frame 17 to receive the upper end and the lower end of the filter element 4, and The sponge tape 18 closes the gap.

The above-mentioned longitudinal ridge 8, guide plates 11, 11a, 1
1a and the holding frame 17 are the receiving member 1 on the air outlet 3 side.
9.

At the air inlet 2, sponge tape 18 ′ is stuck on both side walls 12 in the vertical direction so as to close gaps between both side edges of the filter element 4 and each side wall 12.

At the center of the body case 1 on the side of the air inlet 2, slit-like mounting holes 21 and 21 ′ are provided in the upper wall 15 and the lower wall 16, respectively (see FIG. 3).
The upper and lower ends of the longitudinal ridge 22 are detachably attached to the attachment holes 21 and 21 '.

The vertical ridge 22 abuts on the top 7 of the front central portion of the filter element 4, and a bar-shaped horizontal ridge 23 is provided orthogonally at an intermediate portion of the vertical ridge 22 in the vertical direction. Both ends of the horizontal ridge 23 are detachably engaged with engagement portions 24 provided on both sides of the air inlet 2 of the main body case 1. The engaging portion 24 has an engaging groove 24 ′ whose upper end is open and whose lower end is bent forward (see FIGS. 1 and 3).

On both sides of the longitudinal ridge 22, the horizontal ridges 23
The holding piece 25 is fixed to the. This holding piece 25
The belt-shaped metal plate is bent so that fixing portions 26 are provided at both ends, an inclined plate 27 is provided from each of the fixing portions 26, and tips of both inclined plates 27 are connected to each other by a connecting plate 28. The inclined plate 27 and the connecting plate 28 on both sides form a trapezoid.

Each of the inclined plates 27 has an angle along the inner surface of the V-shaped portion on both sides of the filter element 4 so as to be in close contact with the surface. The above-mentioned longitudinal ridge 22, horizontal ridge 23 and a pair of holding pieces 25 constitute a holding member 29.

The air filter of the embodiment is as described above, and the filter element 4 is inserted from the air inlet 2 side of the main body case 1 as shown in FIG. The rear side of the filter element 4 is provided with the two longitudinal ridges 8, 3
Guide plates 11, 11a, 11a and upper and lower holding frames 1
7 received.

Thereafter, the upper end of the longitudinal member 22 of the pressing member 29 is inserted into the upper mounting hole 21 on the side of the air inlet 2, and the lower end is dropped into the lower mounting hole 21 ′. It falls into the engagement groove 24 'of the engagement part 24.
Then, the longitudinal ridge 22 of the pressing member 29 presses the top 7 at the center of the front surface of the filter element 4 and each of the inclined plates 27 of the pressing pieces 25 on both sides causes the filter element 4 to move.
Press the filter paper 6 on the inner surface of the V-shaped valleys on both sides of.

The pressing force of the pressing member 29 is received by the receiving member 19, and the filter element 4 is stably supported therebetween.

[0027]

As described above, in the air filter of the present invention, the rear surface of the W-shaped filter element is received by the receiving member along the bent surface thereof, and the front surface is pressed by the pressing member. By pressing the inner surfaces of the V-shaped portions on both sides with the provided holding pieces, the filter element can be prevented from being vibrated or deformed without impairing the efficiency, and can be stably housed in the main body case.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a partially cutaway embodiment.

FIG. 2 is a cross-sectional plan view of the same assembled state.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Air inlet 3 Air outlet 4 Filter element 5 Square frame 6 Filter paper 7 Top 7a Top 8 Vertical ridge 9 Bending edge 11, 11a Guide plate 12 Side wall 13 Cut 14 Slope side 14a Slope side 15 Top wall 16 Lower surface Wall 17 holding frame 18, 18 ′ sponge tape 19 receiving member 21, 21 ′ mounting hole 22 longitudinal ridge 23 horizontal ridge 24 engaging portion 24 ′ engaging groove 25 pressing piece 26 fixing portion 27 inclined plate 28 connecting plate 29 pressing member

Claims (2)

[Claims] An air inlet is provided on a front surface of a main body case, and an air outlet is provided on a rear surface thereof. The valleys of V-shaped portions on both sides of a filter element connected in a W shape in plan view are formed inside the main body case. It is housed so that it can be taken in and out so as to face the inlet, and the receiving member of the filter element is provided at the air outlet, and the filter element holding member is detachably attached to the air inlet,
In an air filter in which the filter element is pressed from both front and rear surfaces by the receiving member and the pressing member, the receiving member is formed by V on both sides of the filter element.
Two longitudinal ridges corresponding to the top of the rear face of the shaped part,
Three guide plates which are horizontally attached to each other between the longitudinal members and the outside of each longitudinal member and have guide sides along the rear surface of the filter element; A longitudinal ridge removably attached to the air inlet corresponding to the top in the center on the front side of the filter element; and a pair of ridges attached to both sides of the longitudinal ridge and abutting on inner surfaces of V-shaped portions on both sides of the filter element, respectively. An air filter characterized by comprising a pressure plate. 2. A pedestal comprising a pair of pressing pieces of the pressing member, an inclined plate which is formed by bending a strip-shaped metal piece and abuts on a V-shaped inner surface of the filter element, and a connecting plate which connects the two inclined plates to each other. 2. The air filter according to claim 1, wherein both ends of the holding piece are fixed to a horizontal ridge which is formed in a bent shape and fixed orthogonally to the vertical ridge.