JP2010148996A - Filter structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter structure which can be easily installed even in a ventilation path of a small cross sectional shape without lowering dust collecting efficiency. <P>SOLUTION: A filter 1 pleated so that a peak part 1a and a dent part 1b alternately continue along an air flowing direction when installed in an air conduit includes: a first dust collecting surface 1f formed by being bent to the inner side with the dent part 1b as a bending center at the end part on the air inflow side of each dent part 1b; and a second dust collecting surface 1j formed by being bent to the inner side with the peak part 1a as the bending center at the end part on the air outflow side of each peak part 1a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a structure of a filter installed in an air passage such as a vehicle air purifier.

In a vehicle air cleaning device, a vehicle air conditioner, and the like, a filter that removes dust, pollen, and the like in the air sucked by a blower fan is installed in a blower passage (see, for example, Patent Document 1). In the filter structure as described in Patent Document 1, the surface of the filter member that is pleated in a bellows shape (the surface that is pleated in a bellows shape) is orthogonal to the air flow direction so that the airflow path is formed. It is installed and captures dust, pollen, etc. in the air when the air sucked into the ventilation path passes through the filter.
Japanese Utility Model Publication No. 5-93929

  Incidentally, in recent years, there has been a demand for downsizing of a vehicle air cleaning device and a vehicle air conditioner. However, in a filter structure such as Patent Document 1, the surface of the filter that is pleated in the air flow direction. The cross-sectional shape of the ventilation path cannot be reduced by the configuration in which it is installed in the ventilation path so as to be orthogonal to the ventilation path, and it is difficult to reduce the size of the vehicle air purifier and the vehicle air conditioner. For this reason, a filter structure that can be installed with a reduced cross-sectional shape of the ventilation path without reducing the dust collection efficiency is desired.

  Then, an object of this invention is to provide the filter structure which can be easily installed even in the ventilation path with a small cross-sectional shape, without reducing dust collection efficiency.

  In order to achieve the above object, the filter structure of the present invention according to claim 1 is pleated so that peaks and valleys are alternately continued along the air flow direction when installed in the air passage. The filter is provided with a first dust collecting surface formed by bending the valley portion at one end portion of the valley portion so that the valley portion is bent inward, and the peak portion at the other end portion of the peak portion. The second dust collecting surface is formed by bending inwardly with the center of bending.

  In the filter structure of the present invention according to claim 2, the first dust collection surface faces the air inflow side of the filter and the second dust collection surface faces the air outflow side of the filter when installed in the air passage. It is characterized by facing.

  According to the filter structure of the present invention, air is allowed to flow along the longitudinal direction of the crest and trough of the filter, and foreign matter (dust and pollen in the air is collected on the first dust collecting surface on the air inflow side of the filter. Etc.), and foreign matters (dust, pollen, etc.) in the air can be captured on the second dust collecting surface on the air outflow side of the filter. Therefore, the shape of the dust collection surface (air passage surface) perpendicular to the air flow direction of the filter is improved compared to the conventional filter structure in which the pleated surface is installed in the direction orthogonal to the air flow direction. It can be greatly reduced without lowering.

  Hereinafter, the present invention will be described based on the illustrated embodiments. 1 is a perspective view showing a filter structure according to an embodiment of the present invention, FIG. 2 is a plan view of the filter structure according to the embodiment of the invention, and FIG. 3A is a view of the filter structure according to the embodiment of the invention. The figure which shows an air inflow side, FIG.3 (b) is a figure which shows the air outflow side of the filter structure which concerns on embodiment of invention. In FIG. 1, an arrow A indicates an air flow direction when installed in an air passage such as an air purifier. The filter according to the present embodiment is a dust collection filter that is installed in an air passage such as a vehicle air purifier and captures foreign matters (dust, pollen, etc.) in the air flowing through the air passage.

  As shown in FIGS. 1 to 3, the filter 1 of the present embodiment is configured such that peaks (convex portions) 1 a and valley portions (concave portions) 1 b are alternately continued along the longitudinal direction (air flow direction A). The center fold line 1d is bent along the three fold lines 1c, 1d, and 1e on the front side (left front side in FIG. 1) of each valley (recess) 1b. It has a front-side dust collecting surface 1f that is formed so as to be bent upward (inward) from the center. In addition, on the rear side (right rear side in FIG. 1) of each peak (convex portion) 1a, the lower side (with the center folding line 1h as the folding center along the three folding lines 1g, 1h, 1i ( It has a rear-side dust collecting surface 1j formed so as to be bent inwardly. As a material of the filter 1, for example, a nonwoven fabric or the like can be used.

  That is, the filter 1 has a front-side dust collecting surface 1f formed by flowing air along the longitudinal direction of the crest 1a and the trough 1b and bending it to the front side of the trough 1b, and the rear of the crest 1a. Air is passed through the rear-side dust collecting surface 1j formed by bending to the side, and dust, pollen, and the like are captured from the passing air.

  In a state where the filter 1 is expanded, as shown in FIG. 4, a mountain fold line (one-dot chain line portion) 1a ′ which becomes a peak portion 1a at a predetermined interval and a valley fold line (two-dot chain line portion) 1b which becomes a valley portion 1b. 'Are formed alternately. Further, the three fold lines 1c, 1d, and 1e are formed on one side (left side in FIG. 4) of the valley fold line 1b ′, and on the other side (right side in FIG. 4) of the mountain fold line 1a ′. The three folding lines 1g, 1h, 1i are formed.

  4. After the mountain fold line 1a ′ and the valley fold line 1b ′ are fold-folded with respect to the expanded filter member 1 ′ shown in FIG. 4, along the three fold lines 1c, 1d, and 1e. Bend upward (center side with respect to the paper surface of FIG. 4) around the center fold line 1d, and further down along the center fold line 1h along the three fold lines 1g, 1h, 1i. As shown in FIGS. 1 to 3, the front side dust collecting surface 1f is provided in each trough portion 1b as shown in FIGS. And the filter 1 which has the rear part side dust collecting surface 1j in each peak part 1a of the other side is obtained.

  As shown in FIG. 5, the filter 1 is inserted into a rectangular resin filter case 2 that is open so that a front part (air inflow side) 2a and a rear part (air outflow side) 2b communicate with each other. Thus, the outer side surface portions 1m, 1n of the filter 1 are held so as to be sandwiched between the locking pieces 2c, 2d provided along the vicinity of the inner wall surfaces on both sides in the filter case 2 and the inner wall surface. In addition, in FIG. 5, arrow A is an air flow direction when it installs in the ventilation path of an air purifier.

  Thus, according to the filter structure of the present embodiment, the filter 1 that has been pleated so that the crests 1a and the troughs 1b are alternately continuous is formed by being bent toward the front side of the troughs 1b. While providing the part side dust collecting surface 1f, the rear side dust collecting surface 1j formed by bending to the rear side of the peak part 1a is provided. Then, air is allowed to flow along the longitudinal direction of the peak portion 1a and the valley portion 1b of the filter 1, and on the air inflow side of the filter, foreign matter in the air is captured by the front-side dust collecting surface 1f. On the outflow side, the air flow direction of the filter 1 is compared with the conventional filter structure in which the pleated surface is installed in a direction orthogonal to the air flow direction by the configuration of capturing the foreign matter in the air on the rear side dust collecting surface 1j. The shape of the dust collection surface (air passage surface) orthogonal to the direction can be significantly reduced without reducing the dust collection efficiency.

  Therefore, when this filter 1 is installed in an air passage (duct) such as a vehicle air cleaning device or a vehicle air conditioner, the cross-sectional shape of the air passage surface orthogonal to the air flow direction of the air passage is reduced to reduce the filter 1. Can be installed, and the entire apparatus can be reduced in size.

The perspective view which shows the filter structure which concerns on embodiment of this invention. The top view of the filter structure which concerns on embodiment of this invention. (A) is a figure which shows the air inflow side of the filter structure which concerns on embodiment of invention, (b) is a figure which shows the air outflow side of the filter structure which concerns on embodiment of invention. The figure which shows the state which expand | deployed the filter of this embodiment. The figure which shows the state which inserted the filter of this embodiment in the filter case.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filter 1a Mountain part 1b Valley part 1f Front side dust collecting surface 1j Rear side dust collecting surface 2 Filter case 4 Air passage 5 Air inlet 6 Air blower fan 7 Air outlet

Claims (2)

  When the filter is pleated so that ridges and valleys are alternately continuous along the air flow direction when installed in the air passage, the valley is bent at one end of each valley. In addition, a first dust collecting surface formed by bending inwardly is provided, and a second dust collecting surface formed by bending inwardly with the peak portion as the center of bending is provided at the other end of each peak portion. A filter structure characterized by that.   The first dust collection surface faces the air inflow side of the filter and the second dust collection surface faces the air outflow side of the filter when installed in the air passage. The filter structure described in 1.

Images