JP4485290B2 - Filter media exchange type air filter - Google Patents

Description

  The present invention relates to a filter medium exchange type air filter used for collecting fine particles in the air of a general building air conditioner.

  In recent years, the design of air conditioners for general building air conditioning has shifted to a compact design, and air filters have become space-saving, that is, have become thinner and longer. Currently, the standard dimensions of mainstream air filters on the market are 610mm in height x 610mm in width. However, in recent designs, the demand for products having an outer dimension of more than 1000m with a height exceeding 610mm has increased. Yes.

  In the process of manufacturing an air filter of a size exceeding the conventional standard height, the air filter is manufactured in a horizontally long (width direction) state, and this is set in a vertically long state (90 ° rotation) and installed in a predetermined place. It was. For example, in the case of an air filter having a standard height of 610 mm and a width of 1000 m, the air filter is manufactured in a horizontally long state, rotated 90 ° to be in a vertically long state, and installed at a predetermined place with a height of 1000 mm.

  In order to form such a thin and vertically long air filter, it is necessary to stack a plurality of air filter inserts. A stacking filter or the like is known as a stack of the plurality of air filter inserts (see, for example, Patent Document 1).

In addition, there is an increasing demand for an air filter that can replace only the used filter medium as an air filter that can meet social needs for reducing waste by reducing waste.
And about the filter medium for air filters used for a filter medium exchange air filter, shape, a structure, etc. are researched (for example, refer patent document 2).

Japanese Patent Laid-Open No. 10-192631 JP 2003-93823 A

  In the process of manufacturing an air filter of a size exceeding the conventional standard height, the air filter is manufactured in a horizontally long (width direction) state, and this is set in a vertically long state (90 ° rotation) and installed in a predetermined place. It was. However, in such a process, if the filter is manufactured in a horizontally long state, the filter folded in a zigzag shape is installed in the horizontal direction, and there is a possibility that the filter hangs down by its own weight. Therefore, even if the air filter is installed vertically in that state, there is a problem in that a gap remains between the filter and the frame and fine particles in the air leak.

  Further, in the stacked formation filter disclosed in Patent Document 1, the unit filter is surrounded by upper, lower, left and right flanges and attached to the outer frame, and the opposing flanges of the upper and lower unit filters are fixed by connectors. It becomes a structure. Further, there is a problem in the adhesion between the outer frame and the unit filter due to the enclosure by the flange.

Moreover, the filter medium for air filters currently disclosed by patent document 2 is a filter medium of the standard height size of an air filter, Comprising: There exists a problem which cannot stack a some filter medium.
Therefore, the present invention has an object to provide a filter medium exchange type air filter that has a structure in which two filter medium exchange type air filter inserts can be stacked, and can easily exchange the filter medium exchange type air filter inserts. And

  In order to achieve the above object, a filter medium exchange type air filter of the present invention includes an outer frame having a bottom plate, two side plates, and a top plate, and a first filter medium exchange type air filter insert inserted into the outer frame. And the second filter medium exchange type air filter insert, and the air outflow side of the two side plates provided between the first filter medium exchange type air filter insert and the second filter medium exchange type air filter insert. An intermediate partition frame that is fitted and connected to the notch portion formed on the glass filter, and glass mats that are attached to the top and bottom of the first filter medium exchange type air filter insert and the second filter medium exchange type air filter insert. It is characterized by doing.

  In addition, the air filter of the present invention relating to filter medium replacement can easily replace the air filter insert, and a glass mat is provided on the seal portion so that fine particles in the air do not leak from the gap between the outer frame and the air filter insert. It is also characterized by being used.

  According to the present invention, two filter medium exchange type air filter inserts can be easily stacked, and the filter medium exchange type air filter insert can be easily replaced.

  Hereinafter, the filter medium exchange type air filter concerning the present invention is explained.

FIG. 1 is a diagram showing a configuration of an embodiment of a filter medium exchange type air filter according to the present invention.
The configuration of the present invention will be described below with reference to FIG. As shown in FIG. 1, the filter medium exchange type air filter of this embodiment has a zigzag shape in a rectangular parallelepiped outer frame a composed of a top plate 1, a bottom plate 10, side plates 7 and 7 ′, and an intermediate partition frame 4. It accommodates the filter medium exchange type air filter inserts 3 and 5 that are folded.

  The filter medium exchange type air filter inserts 3 and 5 are formed in a zigzag shape and are bonded to each other with a certain distance between the peaks to maintain the overall shape. The upper filter medium exchange type air filter insert 3 is attached by being sandwiched between the side plates 7 and 7 ′ of the outer frame a, the top plate 1 and the intermediate partition frame 4. Further, the lower air filter insert 5 is attached by being sandwiched between the side plates 7, 7 ′ of the outer frame a, the intermediate partition frame 4, and the bottom plate 10. The upper and lower filter medium exchange type air filter inserts 3 and 5 have a shape slightly larger than the lateral width of the outer frame a, and when inserted into the outer frame a, they are in pressure contact with the side plates 7 and 7 '.

  The top plate 1 constituting the outer frame a has a rectangular lid shape (downward) and is inserted into the upper ends of the side plates 7 and 7 'from above. Therefore, when exchanging the filter medium exchange type air filter inserts 3, 5, it is possible to work by removing the top plate 1.

  The shape of the bottom plate 10 constituting the outer frame a is a rectangular lid shape (upward), and is a shape that is inserted and fixed to the lower ends of the side plates 7 and 7 'from the bottom.

  As shown in FIG. 2, the side plates 7 and 7 'are bent in a U-shaped cross section on the air inflow side, and are bent in a U-shaped cross section on the air outflow side. Thereby, the intensity | strength of the outer frame a is securable. In addition, protrusion insertion holes are provided at positions corresponding to the protrusions provided on the left and right side walls of the top plate 1 in order to facilitate the attachment and detachment of the top plate 1 on the upper side plates 7 and 7 '. A foamed polyethylene sheet is attached to the inside of the side plates 7 and 7 ′ in order to ensure airtightness with the filter medium exchange type air filter inserts 3 and 5. Further, the side plates 7 and 7 'are connected to each other by elastic rod-like reinforcing stays 6 and 6' that are provided on the upper and lower stages on the air outflow side.

  The bottom plate 10 and the side plates 7, 7 'are fixed by riveting on the left and right side walls. Then, when the filter medium exchange type air filter inserts 3 and 5 are inserted into or removed from the outer frame a, the side plates 7 and 7 ′ are spread left and right with the rivet connection portion with the bottom plate 10 as a fulcrum.

Next, the structure of the intermediate partition frame 4 will be described with reference to FIG.
The intermediate partition frame 4 has a structure in which U-shaped steel plates 4b, 4b 'and L-shaped steel plates 4c, 4c' are fixed to both ends of the flat plate portion 4a.

  That is, the L-shaped steel plates 4c and 4c ′ are fixed by the rivets 4d above and below the flat plate portion 4a of the air inflow side intermediate partition frame 4 so as not to protrude from the flat plate portion 4a. For example, the dimensions of the steel plates 4c and 4c ′ may be 8 mm depth × 15 mm height × 0.8 t thickness.

  Further, the steel plates 4b and 4b ′ having a U-shaped cross section are fixed by rivets 4e above and below the flat plate portion 4a of the intermediate partition frame 4 on the air outflow side so as not to protrude from the flat plate portion 4a. For example, the dimensions of the steel plates 4b and 4b ′ may be 8 mm depth × 15 mm height × 6 mm bent × 0.8 t thickness.

Next, the notches 8 and 8 'provided on the side plates 7 and 7' of the outer frame a will be described with reference to FIG.
The notches 8 and 8 'are arranged vertically on the air outflow side of the side plates 7 and 7' with the height of the steel plates 4b and 4b 'starting from the position where the flat plate portion 4a of the intermediate partition frame 4 is substantially centered. Notched. Thereby, the height position of the filter medium exchange type air filter inserts 3 and 5 is positioned at the center of the notches 8 and 8 '.

  Next, the assembly of the filter medium exchange type air filter according to the embodiment and the exchange procedure of the filter medium exchange type air filter inserts 3 and 5 will be described.

First, the procedure for assembling the filter medium exchange type air filter will be described with reference to FIGS.
As a first step, the glass mat 2a is set on the bottom plate 10 of the outer frame a. Further, reinforcing stays 6 and 6 'are attached to the side plates 7 and 7' of the outer frame a on the air outflow side ((a) of FIG. 5).

  As a second step, the air filter insert 5 is inserted from above while spreading the side plates 7, 7 '. Next, the glass mat 2 b is set on the lower filter medium exchange type air filter insert 5. Then, the fitting-type intermediate partition frame 4 is set from above the glass mat 2b ((b) of FIG. 5). At this time, as described with reference to FIG. 4, the bent portion 9 of the intermediate partition frame 4 is set in the notched portions 8 and 8 ′ of the side plates 7 and 7 ′.

  As a third step, the glass mat 2c is set on the intermediate partition frame 4 and the upper filter medium exchange type air filter insert 3 is set thereon. Finally, the glass mat 2d is set on the upper filter medium exchange type air filter insert 3, and the top plate 1 is attached thereon ((c) of FIG. 5).

  Next, the removal (exchange) procedure of the filter medium exchange type air filter inserts 3 and 5 will be described with reference to FIGS. 5 (d) to 5 (f).

As a first step, the top plate 1 is removed from the upper surface of the outer frame a, and then the glass mat 2d is removed. Then, while spreading the side plates 7 and 7 'of the outer frame a, the upper filter medium exchange type air filter insert 3 is taken out from the outer frame a, and the glass mat 2c is removed ((d) in FIG. 5).
As a second step, the bent portion 9 of the fitting-type intermediate partition frame 4 is removed from the notched portions 8, 8 'of the side plates 7, 7' of the outer frame a, and then the glass mat 2b is removed. Then, the lower filter medium exchange type air filter insert 5 is removed from above while spreading the side plates 7 and 7 '((e) of FIG. 5).

  As a third step, the glass mat 2a is finally removed from the bottom 10 of the outer frame a ((f) in FIG. 5). The used upper and lower filter medium exchange type air filter inserts 3 and 5 and the glass mats 2a to 2d are replaced with new ones and assembled according to the above-described assembly procedure.

  According to this embodiment, when a vertically long air filter exceeding the standard size is manufactured, by installing a fitting-type intermediate partition frame, upper and lower filter medium exchange type air filter inserts are stacked from the upper part of the outer frame. can do. At this time, since the upper and lower filter medium exchange type air filter inserts are inserted or removed in a state where the outer frame is erected, the filter folded in a zigzag shape can be operated without drooping under its own weight.

  In addition, when replacing the filter medium replacement type air filter insert, it is possible to easily replace the filter by simply setting a glass mat without using an adhesive or sealant on the outer frame, and to provide a highly sealable air filter. be able to. Moreover, since the outer frame can always be reused, it can contribute to waste reduction.

The figure which shows the structure of embodiment of the filter medium exchange type air filter which concerns on this invention. Sectional drawing of the side plate of embodiment. Sectional drawing of the intermediate partition frame of embodiment. The figure which shows the connection of the side plate of embodiment, and an intermediate partition frame. The figure which shows the operation | work procedure of the assembly of the filter medium exchange type air filter which concerns on this invention, and removal (exchange).

Explanation of symbols

a ·· outer frame 1 · · top plate 2a to 2d · · glass mat 3 · · first filter medium exchange type air filter insert 4 · · intermediate partition frame 4a · · flat plate portion 4a
4b, 4b '··· Steel plates 4c, 4c' · · · L-shaped steel plates 4d, 4e · · Rivet 5 · · Second filter medium exchange type air filter insert 6, 6 '· · -Reinforcing stays 7, 7 '-Side plate 8, 8'-Notch 9-Bending part 10-Bottom plate

Claims (1)

An outer frame having a bottom plate, two side plates and a top plate;
A first filter medium exchange air filter insert and a second filter medium exchange air filter insert inserted into the outer frame;
Provided between the first filter medium exchange type air filter insert and the second filter medium exchange type air filter insert, and fitted and connected to a notch formed on the air outflow side of the two side plates. A partition frame;
A filter medium exchange type air filter comprising: a first filter medium exchange type air filter insert and a glass mat attached to the top and bottom of the second filter medium exchange type air filter insert.

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