JP3792360B2 - Exhaust fan filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filter for a ventilation fan that captures dust and oil in the air sucked by a direct-mounted ventilation fan.
[0002]
[Prior art]
Direct-mounted ventilation fans used in kitchens of ordinary households are attached to ventilation openings formed on walls, ceilings, etc., and the air inside the building is sucked out and exhausted outside the building. Provide ventilation. This type of direct ventilation fan is very dirty due to the adhesion of dust and oil contained in the air, and must be cleaned frequently. In order to eliminate the trouble of this cleaning, a filter is attached in front of the ventilation fan, and dust and oil contained in the air sucked into the ventilation fan are captured by this filter to prevent contamination of the ventilation fan blades. It has been.
[0003]
Conventionally, a filter used for a direct-mounted type ventilation fan is a structure in which a filter material such as flexible glass wool or non-woven fabric is integrated with a frame frame filter frame by means such as adhesion and caulking, and is attached to the front of the ventilation fan. It can be attached to the mounting panel.
[0004]
[Problems to be solved by the invention]
The conventional ventilation fan filter has a structure in which the filter material is integrated with the filter frame by means such as adhesion and caulking. Therefore, when replacing the filter, the filter frame and the filter material must be replaced and discarded as a unit. The running cost was disadvantageous.
[0005]
The objective of this invention is providing the filter for ventilation fans which aims at reduction of a running cost.
[0006]
[Means for Solving the Problems]
The present invention is integral with a pair and right and left and the rectangular frame-shaped frame consisting of a pair of upper and lower four thin pair of upper and lower four thin plate and the lattice frame-shaped frame consisting of cross bars and having the same size as this A filter frame having means for connecting to each other in a folded state, and a rectangular sheet-like filter material that is detachably attached to the filter frame, and is connected in a foldable manner through a hinge. The means for locking is an engagement hole with a slit integrally extended so as to be able to be folded back on the back side to the opposite thin plate connected to the rectangular frame of the pair of upper and lower thin frames of the lattice frame A bent side having a pair of left and right thin plates of a lattice frame-like frame, and a hook-like locking claw protruding from the center of the pair of left and right thin plates of the rectangular frame-like frame; Comprising an engaging protrusion protruding from the surface opposite the sheet which connects the pair of upper and lower thin plates lattice frame-shaped frame of frame, the rectangular frame is placed a filter material in a lattice frame-shaped frame of the filter frame The frame-shaped frame is folded in two, the folded side of the grid frame-shaped frame is folded back, and the engagement holes of the folded side are engaged with the engagement protrusions of the rectangular frame-shaped frame. The above-mentioned object is achieved by locking the frame locking claws to the thin plate of the rectangular frame-shaped frame, and locking both frames of the filter frame with locking means.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the filter for a ventilation fan of the present invention will be described below with reference to the drawings.
[0008]
FIG. 1 shows a perspective view of a filter frame 1 and a filter material 10 constituting the ventilation fan filter of the present invention before assembly. The filter frame 1 is made of plastic, for example, and can be folded into a rectangular frame frame 3 and a lattice frame frame 2 having the same size in two through an integral hinge 4 formed thin. Are connected to one another. The frame 2 includes a pair of left and right and upper and lower thin plates 2a, 2b and a crosshair 2c, and a bent side 6 having engaging holes 5 with slits at two locations on the opposite thin plate 2a connected to the frame 3. Is integrally extended to the back surface (upper surface in FIG. 1) so as to be folded back through the integral hinge 7 formed thin (see FIG. 2), and the thin plate 3b of the frame 3 is formed at the center of the thin plate 2b. A hook-like locking claw 8 to be locked is projected (see FIG. 3). The frame 3 is composed of a pair of left and right and a pair of upper and lower thin plates 3a and 3b. Engaging protrusions 9 are projected at two positions on the surface (the lower surface in FIG. 1) of the opposite thin plate 3a connected to the frame 2. (See FIG. 4). The engaging projection 9 is provided so as to correspond to the engaging hole 5 of the bent side 6 in a state where the frames 2 and 3 are folded in two and the bent side 6 of the frame 2 is folded back onto the frame 3. Yes.
[0009]
The filter material 10 is a flexible rectangular sheet such as glass wool or non-woven fabric, and is formed in a size slightly smaller than the frames 2 and 3 of the filter frame 1. The filter material 10 is detachably attached to the filter frame 1 as shown in FIGS.
[0010]
After the filter material 10 is placed on the frame 2 of the filter frame 1 in the state shown in FIG. 1, the frame 3 is folded in half on the frame 2, and then, as shown in FIG. As shown in FIG. 8, the engaging claw 8 of the frame 2 is engaged with the thin plate 3b of the frame 3 as shown in FIG. By doing so, the filter material 10 is detachably attached to the filter frame 1 to assemble the ventilation fan filter.
[0011]
The ventilation fan filter assembled by detachably attaching the filter material 10 to the filter frame 1 as described above is detachably attached to a mounting panel attached to the front surface of the ventilation fan, and is sucked into the ventilation fan by the filter material 10. Captures dust and oil inside. When the filter material 10 becomes dirty or the capacity is reduced, only the filter material 10 is replaced and the filter frame 1 is reused. To replace the filter, the entire ventilation fan filter is removed from the mounting panel, and then the folded side 5 of the frame 2 is folded back while the engagement hole 5 is disengaged from the engagement projection 9 of the frame 3. At the same time, the locking claw 8 locked to the thin plate 3b of the frame 3 of the frame 2 is released from the thin plate 3b of the frame 3, and then the filter frame 10 is folded back based on the folded frame 3 of the filter frame 1. This is done by a simple operation of simply removing the new filter material 10 and mounting a new filter material 10 again.
[0012]
Note that the present invention is not limited to the above embodiment, and for example, the material of the filter frame 1 may be a thin plate made of aluminum or other metals in addition to plastic.
[0013]
【The invention's effect】
According to the present invention, the filter material can be detachably attached to the filter frame. Therefore, when replacing the filter, it is only necessary to replace the filter material and reuse the filter frame, so that the running cost can be reduced. It is possible to provide a ventilation fan filter that is convenient for the user.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a filter for a ventilation fan according to an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG.
FIG. 3 is an enlarged cross-sectional view taken along the line BB in FIG.
4 is an enlarged cross-sectional view taken along a line CC in FIG. 1. FIG.
5 is a plan view of the filter frame of FIG. 1. FIG.
6 is a perspective view of a filter for a ventilation fan in which a filter material is mounted on the filter frame of FIG. 1. FIG.
7 is an enlarged cross-sectional view taken along the line DD in FIG. 6. FIG.
8 is an enlarged cross-sectional view of a portion EE in FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filter frame 2 Frame 3 Frame 4 Integral hinge 5 Engagement hole 6 Bending side 7 Integral hinge 8 Claw 9 Engagement protrusion 10 Filter material

Claims (1)

A pair of left and right and four pairs of upper and lower thin plates and a cross frame and a rectangular frame frame having the same size and a pair of left and right and upper and lower pairs of thin plates are connected via an integral hinge. It consists of a filter frame that is connected in a foldable manner so as to be foldable and that has means for locking both frames in a folded state, and a rectangular sheet-like filter material that is detachably attached to the filter frame,
The locking means is an engagement with a slit integrally extended so as to be able to be folded back on the back surface side of a pair of upper and lower thin plates of the lattice frame-like frame connected to the rectangular frame-like frame. A bent side having a hole, a hook-like locking claw protruding from the center of a pair of left and right thin plates of the lattice frame-shaped frame and locked to a pair of left and right thin plates of the rectangular frame-shaped frame; An engagement protrusion projecting on the surface of the opposite thin plate connected to the lattice frame-shaped frame of the pair of upper and lower thin plates of the rectangular frame-shaped frame;
The filter material is placed on the grid frame-like frame of the filter frame, the rectangular frame frame is folded in half, the folded side of the grid frame-shaped frame is folded back, and the engagement holes of the folded side are formed in the rectangular frame. At the same time as engaging the engaging projections of the frame frame, the locking claws of the lattice frame frame are locked to the thin plate of the rectangular frame frame, so that both frames of the filter frame are locked by the locking means. A ventilation fan filter characterized by stopping.

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