JP6413075B2 - Air filter and air purifier using the same - Google Patents

Description

  The present invention relates to an air filter incorporated in an air conditioner and the like, and an air purifier equipped with the air filter.

  The conventional air filter has a pleated first filter, a first frame that retains the shape of the first filter, and a second filter provided on one surface side of the first filter, The second filter was configured to be fixed to the first frame. For example, a similar prior document is described in Patent Document 1 below.

Japanese Patent Laid-Open No. 01-180213

  The problem in the above conventional example is further reduction of defective air filter production processes.

  In the process of producing the air filter, the first pleated filter and the second filter are sequentially bonded and fixed to the first frame.

  However, since the second filter is rougher and softer than the first filter, wrinkles are likely to occur. After the pleated first filter is bonded to the first frame, and when the second filter is bonded to the first frame, if the second filter is wrinkled, it becomes defective and used as a product Can not. That is, not only the second filter but also the first filter cannot be used as a product.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to realize a further reduction in production process defects by adopting an air filter configuration that is stable and difficult to cause defects during operation.

In order to achieve this object, the present invention provides a pleated first filter, a first frame that retains the shape of the first filter, and a second frame that is fixed to the first frame. And a second filter provided on one surface side of the first filter, and the second frame includes a second frame fixing portion fixed to the first frame, and the second filter A second frame folded portion protruding from the frame fixing portion to the one surface side of the first filter, and the second filter includes a flat plate-shaped filter portion having a plurality of holes, and the filter portion. Provided with a wrinkle suppressing means that is a third frame having a square shape that suppresses wrinkles of the second filter provided at the peripheral edge of the second filter, and first passes through the second filter 12 and then the second filter. In the air blowing direction passing through the first filter, the second filter is the third filter. A downstream-side adhesive on the downstream side in the air blowing direction of the frame, by the downstream-side adhesive, the third frame is fixed to the periphery of the filter portion of the second filter, the second filter has an upstream-side adhesive on the upstream side in the air blowing direction of the third frame, by the upstream-side adhesive, fixed to the inside of the second frame folded portion, the second frame The width dimension of the third frame mounted is smaller than the width dimension of the second frame folded portion, thereby achieving the initial purpose.

As described above, the present invention provides a pleated first filter, a first frame that retains the shape of the first filter, a second frame fixed to the first frame, and the first frame. A second filter provided on one surface side of the first filter, and the second frame includes a second frame fixing portion fixed to the first frame, and the second frame fixing portion. A second frame folded portion projecting to one surface side of the first filter from the first filter, and the second filter includes a flat plate-shaped filter portion having a plurality of holes, and a peripheral portion of the filter portion. Provided with wrinkle suppression means that is a third frame having a square shape that suppresses wrinkles of the second filter provided, and first passes through the second filter 12 and then passes the first filter In the air blowing direction that passes, the second filter is arranged in the air blowing direction of the third frame. Definitive has a downstream-side adhesive on the downstream side, by the downstream-side adhesive, the third frame is fixed to the periphery of the filter portion of the second filter, the second filter, the third Having an upstream adhesive on the upstream side in the air blowing direction of the frame, fixed to the inside of the second frame folded portion by the upstream adhesive, attached to the second frame, and The width dimension of the frame 3 is smaller than the width dimension of the second frame folded portion, and is intended to further reduce the process failure of the air filter.

That is, since the second filter can be created as a separate part provided with wrinkle suppression means for suppressing wrinkles of the second filter, it becomes a configuration of an air filter that is stable and difficult to produce during work, and the third frame is The third frame has an upstream adhesive on the upstream side in the blowing direction by the blowing means, and is fixed to the inside of the second frame folded portion by the upstream adhesive, and the width dimension of the third frame Is smaller than the width dimension of the second frame turn-back part, so that it is easy to manage the application amount and position of the adhesive and adheres to the second frame turn-up part upstream of the second frame. As a result, the production process can be further reduced.

Sectional drawing of the air purifying apparatus of Embodiment 1 of this invention. Schematic of the air filter of the same air purifier Development view of the air filter of the air purifier Development view of second filter of air filter of same air cleaning device Development view of the air filter of the air purifier Exploded view of the second filter of the air filter of the air cleaning device of the second embodiment of the present invention. Development view of the air filter of the air purifier of the air purifier The perspective view of the 2nd filter of the air filter of the air purifying apparatus of Embodiment 3 of this invention. Sectional drawing of the 2nd filter of the air filter of the air purifying apparatus of Embodiment 4 of this invention. The perspective view of the 2nd filter of the air filter of the air purifier

  Hereinafter, the present embodiment will be described with reference to the accompanying drawings.

(Embodiment 1)
An embodiment of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view of the air cleaning device according to the first embodiment of the present invention. As shown in FIG. 1, the air cleaning device of this embodiment includes a blower 2 and an air filter 3 in a main body case 1.

  The main body case has a substantially vertically long box shape, and an air inlet 4 is provided on the front side of the main body case, and an exhaust port 5 is provided on the top surface of the main body case. The exhaust port 5 is provided with a wind direction louver 6.

  The air blowing means 2 is provided in an air passage between the air inlet 4 and the air outlet 5 of the main body case 1, and has a scroll-shaped casing 7 and a blade 8 which is a centrifugal air fan provided in the casing 7. And an electric motor (not shown) for rotating the blades 8.

  The air filter 3 is located on the downstream side of the intake port 4 of the main body case 1.

  In the above configuration, the air that has been sucked into the main body case 1 from the air inlet 4 by the air blowing means 2 is sent to the air outlet 5 through the air filter 3. That is, the indoor air is cleaned by the air filter 3 and blown into the room.

  FIG. 2 is a schematic diagram of an air filter of the air cleaning device according to the first embodiment of the present invention. FIG. 3 is a development view of the air filter of the air cleaning device according to the first embodiment of the present invention. As shown in FIGS. 2 and 3, the air filter 3 is fixed to the first pleated filter 9, the first frame 10 that retains the shape of the first filter 9, and the first frame 10. The second frame 11 and the second filter 12 provided on the one surface side of the first filter 9 are provided. The second filter 12 is coarser and softer than the first filter 9.

  The air that has taken in indoor air from the air inlet 4 into the main body case 1 by the blower 2 passes through the second filter 12 first, and then passes through the first filter 9.

  Since the second filter 12 is coarser than the first filter 9, the second filter 12 collects relatively large dust, and the second filter 12 collects relatively small dust that cannot be collected by the second filter 12. Collect by filter 9.

  The first filter 9 is obtained by bending a flat filter material into a pleated shape, that is, a corrugated shape.

  When viewed from the windward side in the blowing direction, the first frame 10 has a square shape and is bonded to the periphery of the pleated first filter 9 by a first adhesive member. An example of the first frame is four rectangular plates, and the material is a nonwoven fabric. One example of the first adhesive member is an adhesive or a hot melt.

  When viewed from the windward side in the blowing direction, the second frame 11 has a square shape, and is fixed to the first frame 10 at the periphery of the first frame 10 by a first adhesive member. An example of the second frame 11 is a rectangular plate having three folds in the short side direction and made of paper.

  The second filter 12 is provided on the one surface side of the first filter 9. An example of the second filter 12 is a rectangular plate-shaped net, and the material is resin.

  A feature of the present embodiment is that the second filter 12 includes a wrinkle suppressing unit 13 that suppresses wrinkles of the second filter 12 and is attached to the second frame 11.

  Thereby, since the 2nd filter 12 is provided with the wrinkle suppression means 13 which suppresses the wrinkle of the 2nd filter 12, and the 2nd filter 12 can be created as another component, it is hard to produce a defect stably at the time of work. It becomes the structure of an air filter. As a result, a further reduction in production process defects can be realized.

  The second frame 11 includes a second frame fixing portion 14 fixed to the first frame 10 and a second frame protruding from the second frame fixing portion 14 to the one surface side of the first filter 9. A frame folding portion 15. The second filter 12 includes a flat plate-shaped prefilter portion 16 having a large number of holes and wrinkle suppression means 13 provided at the peripheral edge portion of the prefilter portion 16. The wrinkle suppression means 13 has higher rigidity than the prefilter part 16. The wrinkle suppressing means 13 having high rigidity is attached to the second frame turn-up portion 15.

  Specifically, the wrinkle suppressing means 13 of the second filter 12 is a plate-shaped third frame 17 provided at the peripheral edge portion of the pre-filter portion 16. The third frame 17 has a square shape in which a central portion of a quadrangular plate is pulled out into a quadrangular shape.

  FIG. 4 is a development view of the second filter of the air filter of the air cleaning device according to the first embodiment of the present invention. FIG. 4 is a view seen from the downstream side in the blowing direction. FIG. 5 is a development view of the air filter of the air cleaning device according to the first embodiment of the present invention. FIG. 5 is a view as seen from the upstream side in the blowing direction.

  As shown in FIG. 4, first, an adhesive 18 is provided on the downstream side in the blowing direction by the blowing means 2 of the third frame 17, and the peripheral edge of the prefilter portion 16 of the second filter 12 is formed by the adhesive 18. It is fixed to the part. The outer peripheral end of the pre-filter portion 16 of the second filter 12 and the outer peripheral end of the third frame 17 are substantially the same.

  Thus, since the pre-filter portion 16 of the second filter 12 is attached to the third frame 17 having a square shape, the second filter 12 can be produced separately as a separate part. Above, it can work easily so that the pre-filter part 16 of the 2nd filter 12 may not be wrinkled.

  Next, as shown in FIG. 5, an adhesive 19 is provided on the upstream side in the blowing direction of the third frame 17 by the blowing means 2, and this adhesive 19 causes the second frame folded portion 15 to be inward. It is fixed. The third frame 17 also serves as a glue margin.

  That is, the application amount and application position of the adhesive 19 can be easily managed, and the adhesive 19 can be prevented from protruding when bonded to the second frame turn-up portion 15 on the upstream side of the second frame 11. The occurrence of defects can be reduced in the process. As a result, there is an effect of reducing the filter disposal cost, that is, the loss cost. Further, since the work becomes easier, the number of work steps can be reduced.

  Needless to say, if the width dimension of the third frame 17 is smaller than the width dimension of the second frame folded portion 15, it is difficult for the adhesive 19 to protrude.

(Embodiment 2)
FIG. 6 is a development view of the second filter of the air filter of the air cleaning device according to the second embodiment of the present invention. FIG. 6 is a view seen from the downstream side in the blowing direction. FIG. 7 is a development view of the air filter of the air cleaning device according to the second embodiment of the present invention. FIG. 7 is a view seen from the upstream side in the blowing direction. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The difference from the first embodiment is the configuration of the second filter 12 and the point that the second filter 12 is detachable from the second frame 11.

  As shown in FIG. 6, the second filter 12 is bonded to the downstream side of the third frame 17 with the center portion pulled out, and the third filter 20 is bonded in addition to the prefilter portion 16. It may be integrated. Similarly, it can be handled as a separate part, and similarly, it is possible to reduce defects and man-hours. As the third filter 20, if an anti-allergen agent, an antibacterial agent or a deodorizing agent is used, a high added value air filter can be realized.

  As shown in FIG. 7, the second filter 12 may be detachable from the second frame 11.

  That is, the hook-and-loop fastener 21 is provided on the upstream side in the air blowing direction of the wrinkle suppressing means 13 provided on the peripheral edge of the pre-filter part 16 in the second filter 12 and on the downstream side in the air blowing direction of the second frame folding part 15. Is provided. One example of this surface fastener is Velcro (registered trademark).

  Thereby, the second filter 12 can be attached and detached, and the customer can remove and care for the second filter 12. Thereby, the dust adhering to the 1st filter 9 can also be cleaned and a high performance filter can be maintained. In addition, only the second filter 12 can be purchased as a separately sold product and can be replaced by oneself, so that it is possible to meet a customer's request for a more clean feeling. Further, when a defect such as a scratch is found, only the second filter 12 can be replaced, the loss cost is suppressed, and the adhesive is not used, so that the number of work steps can be reduced.

  Note that the prefilter portion of the second filter 12 includes metal and fibers in addition to the resin net and PP net, and can also be applied to non-woven sheets such as polyester and PP.

  The second frame 11 is assumed to be paper, but may be plastic, metal, nonwoven fabric, or the like.

  The third frame 17 is assumed to be paper, but may be plastic, metal, nonwoven fabric, or the like.

  In addition, this effect will be acquired if an adhesive uses a bond, a hot melt, a double-sided tape, etc.

(Embodiment 3)
FIG. 8 is a perspective view of the second filter of the air filter of the air cleaning device according to the third embodiment of the present invention. FIG. 8 is a view as seen from the downstream side in the blowing direction. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The difference from the first embodiment is wrinkle suppression means. Specifically, the pre-filter part 16 of the second filter 12 is made of resin, and the wrinkle suppression means 13 of the second filter 12 is such that at least a part of the peripheral edge of the pre-filter part 16 is thermally welded. Is buried by. Specifically, the peripheral edge of the prefilter part 16 is sandwiched between high-temperature metals, the peripheral part of the prefilter part 16 is melted by heat, and the hole is filled, thereby making the peripheral part of the prefilter part 16 into a plate shape. To do.

  Thereby, the peripheral part of the pre-filter part 16 becomes a frame, and a new frame is not necessary, and the cost can be reduced. In addition, since the peripheral part of the pre-filter part 16 becomes a paste margin, management of application | coating of an adhesive agent can be ensured similarly.

(Embodiment 4)
FIG. 9 is a cross-sectional view of the second filter of the air filter of the air cleaning device according to the fourth embodiment of the present invention. FIG. 9 is a view seen from the vertical direction with respect to the blowing direction. FIG. 10 is a perspective view of the second filter of the air filter of the air cleaning device according to the fourth embodiment of the present invention. FIG. 10 is a view seen from the upstream side in the blowing direction. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The difference from the first embodiment is wrinkle suppression means. Specifically, as shown in FIGS. 9 and 10, a third filter 20 is provided on the other surface of the pre-filter portion 16. The pre-filter part 16 and the third filter 20 of the second filter 12 are made of resin. The wrinkle suppression means 13 of the second filter 12 is a portion where the prefilter portion 16 of the second filter 12 and the peripheral portion of the third filter 20 are welded by heat.

  That is, when the prefilter part 16 and the third filter 20 are overlapped and the peripheral part is heat-welded and integrated, the second filter 12 has a plate shape, and a frame is not necessary, and the cost can be reduced. It becomes possible.

  One example of the third filter 20 is a nonwoven fabric. As the third filter 20, if an anti-allergen agent, an antibacterial agent or a deodorizing agent is used, a high added value air filter can be realized.

  In addition to anti-allergen agents, antibacterial agents, and deodorants, antiviral and antifungal agents may be added.

  In addition, since the part of heat welding becomes paste margin, management of application | coating of the adhesive agent 19 can be ensured similarly.

  As described above, the present invention provides a pleated first filter, a first frame that retains the shape of the first filter, a second frame fixed to the first frame, and the first frame. A second filter provided on one surface side of the first filter, and the second filter includes wrinkle suppression means for suppressing wrinkles of the second filter, and is attached to the second frame. The purpose is to further reduce the process defects of the air filter.

  That is, since the second filter can be created as a separate part provided with wrinkle suppression means for suppressing wrinkles of the second filter, it becomes a configuration of an air filter that is stable and difficult to cause defects during work, and as a result, the production process Further reduction of defects can be realized.

  Therefore, it is expected to be used as an air cleaning device for home use or office use.

DESCRIPTION OF SYMBOLS 1 Main body case 2 Air blower 3 Air filter 4 Intake port 5 Exhaust port 6 Wind direction louver 7 Casing 8 Blade | wing 9 1st filter 10 1st frame 11 2nd frame 12 2nd filter 13 Wrinkle suppression means 14 2nd Frame fixing part 15 Second frame folding part 16 Prefilter part 17 Third frame 18 Adhesive 19 Adhesive 20 Third filter 21 Surface fastener

Claims (2)

A first pleated filter;
A first frame that retains the shape of the first filter;
A second frame fixed to the first frame;
A second filter provided on one surface side of the first filter,
The second frame is
A second frame fixing portion fixed to the first frame;
A second frame folded portion protruding from the second frame fixing portion to the one surface side of the first filter;
The second filter is:
A plate-shaped filter portion having a large number of holes;
Comprising wrinkle suppression means that is a third frame of a square shape that suppresses wrinkles of the second filter provided at the peripheral edge of the filter portion;
In the air blowing direction that first passes through the second filter 12 and then passes through the first filter,
The second filter is:
Having a downstream adhesive on the downstream side in the blowing direction of the third frame,
With the downstream adhesive, the third frame is fixed to the peripheral portion of the filter portion of the second filter,
The second filter is:
Having an upstream adhesive on the upstream side in the blowing direction of the third frame;
Fixed to the inside of the second frame folded portion by the upstream adhesive,
Mounted on the second frame;
An air filter, wherein a width dimension of the third frame is smaller than a width dimension of the second frame folded portion. The air filter according to claim 1 is disposed in an intake port portion of a main body case, and air sucked from the intake port by a blowing unit is exhausted through the second filter and the first filter sequentially. Air purifier that is blown to the mouth.

Images