JPH0528408Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention relates to a blower with a filter that is equipped with a removable filter. The present invention relates to an air purifier equipped with a filter that collects cigarette smoke, etc., and an air conditioner equipped with a filter that collects dust in the air.

(b) Conventional technology As a technology prior to this invention, Utility Model Application No. 62-14246
There is a blower with a filter described in the publication. A blower with a filter has an L-shaped hook piece formed at the upper front of the main body, an engagement hole formed at the lower front side of the main body, and a filter frame with a hook hole for the hook piece and an elastic locking piece for the engagement hole. is formed. The filter frame is held in the main body with the hook hole hooked on the hook piece, and the filter frame is rotated around the hook hole and the lower part is pressed against the main body, thereby locking the elastic locking piece in the engagement hole.

(c) Problems to be solved by the invention In the conventional technology, although the filter frame is sure to fall off from the front cover body, the filter frame is only caught at the upper part of the front cover body, and the filter frame and the front cover are separated. The upper part has poor adhesion to the body, causing rattling due to vibration and causing abnormal noise.
In addition, the intake air flow by the blower blades is sucked in through the gap, reducing the collection efficiency of the filter.

In view of the shortcomings of the conventional technology, the present invention provides a blower with a filter that can be securely attached to the filter frame and the main body without rattling, and can be attached and detached safely and easily.

(d) Means for solving the problems The structure of the present invention will be explained based on the structures shown in FIGS. 1 to 4, the structure shown in FIG. 5, and the structure shown in FIG. 6.

The present invention has a main body 5 formed by a frame 1 that supports an electric motor, and a front cover 4 that is attached to and detached from the front of the frame 1 and forms a wind tunnel 3 for a blower blade 2 that is driven by the electric motor. . Air is blown by the air blower blade 2 in the wind tunnel 3.
The air is sucked in and blown out from the rear surface of the frame body 1, and the portion from the wind tunnel 3 of the front cover body 4 to the rear surface inside the frame body 1 becomes a ventilation path.

A filter frame 6 is attached to and removed from the front cover body 4 so as to cover the wind tunnel 3 of the front cover body 4. A filter 7 is arranged in the filter frame 6. The filter frame 6 is made of synthetic resin. The filter 7 may be of any type as long as it can collect oil smoke, dust, etc. In the structure shown in FIGS. 1 to 4, it is formed of a synthetic resin net, and the filter frame 6 is formed by heat welding, molding, or They are integrated by gluing, etc. Even if the filter 7 is a wire mesh body or a lath plate, it can be integrated with the filter frame 6 by the same means. Further, the filter 7 may be detachably attached to the filter frame 6.

The filter frame 6 is formed with a first elastic locking portion 10 for attachment and detachment to the front cover body 4 of the main body 5, and a second locking portion 11 formed integrally with the first locking portion 10. The front cover body 4 has an elastic first locking part 10.
The first engaging portion 12 is engaged with the first engaging portion 12, and the second engaging portion 13 is engaged with the second engaging portion 11.

In the structure shown in FIGS. 1 to 4, inverted L-shaped elastic locking pieces are formed on the upper and lower parts of both sides of the rear edge of the filter frame 6, and the second locking part 11 is formed with the inverted L-shaped elastic locking pieces. A first elastic locking portion 10 is formed on the reverse L-shaped elastic locking piece by forming a protrusion on the proximal side surface of the reverse L-shaped elastic locking piece. Elastic first locking part 1
The protrusions for forming 0 are formed only on the inverted L-shaped elastic locking pieces on both sides of the upper part.

The upper and lower parts of both sides of the front surface of the front cover body 4 are formed with elongated holes sized to allow insertion of inverted L-shaped elastic locking pieces, and the outer edges of the elongated holes engage with the protrusions of the first elastic locking parts 10. The lower edge of the elongated hole becomes the first engaging part 12, and the lower edge of the elongated hole becomes the second engaging part 12.
The locking portion 11 becomes a second engaging portion 13 that is caught.

The structure shown in FIGS. 5 and 6 is formed by shifting the positions of the second engaging portions 13 at the lower left and right in FIG. 5 in the vertical direction, and in FIG. The elongated hole of the portion 13 is formed to have a large width. Correspondingly, it is necessary to create a structure in which the position and width of the second engaging portion 11 formed on the filter frame 6 are changed.

(e) Operation As explained in the section for solving the problems in the previous section, the filter frame 6 is temporarily held against the main body 5 by pressing in the right angle direction by the first engaging part 12 and the first locking part 10. , the second engaging portion 13 and the second locking portion 11 are hooked and engaged by the movement in the parallel direction.
Therefore, the filter frame 6 can be detachably attached by moving the filter frame 6 in the perpendicular and parallel directions relative to the main body 5.

In the structure shown in FIGS. 1 to 4, the second locking portion 11 is formed of an L-shaped elastic locking piece to perform hooking engagement.

5 and 6, the filter frame 6 can only be attached to the front cover body 4 of the main body 5 in the normal direction.

(f) Examples Each structure shown in the drawings will be explained concretely to clarify the structure of the present invention.

The structure shown in FIGS. 1 to 4 will be explained.

The frame 1 is formed by bending and joining sheet metal into a rectangular cylindrical shape, and an electric motor is mounted at the center of a support rod 20 built within the frame 1. The blowing blade 2 is formed of a propeller fan, and is detachably attached to the rotating shaft of the electric motor using a spinner.

The front cover body 4 and the filter frame 6 are molded from synthetic resin. The front cover body 4 has a first engaging part 12 and a first engaging part 12 into which inverted L-shaped elastic engaging pieces forming the first elastic engaging part 10 and the second engaging part 11 formed on the filter frame 6 are inserted. 2. A long hole that becomes the second engaging portion 13 is formed. By forming the elongated holes in the front cover body 4, the structure of the front cover body 4 is simplified, and the molding die thereof is also simplified. In addition, when molding a front cover body that does not require the attachment of the filter frame 6, the protrusion for molding the long holes in the mold is removable and replaceable, making it easy to change the mold between molding and non-molding of the long holes. It can be done at moreover,
Since no protrusion is formed on the front cover body 4, it is easy to clean dirt caused by adhesion of oily smoke.

Second locking portions 11 are formed at the upper and lower portions of both sides of the rear edge of the filter frame 6, but the elastic first locking portions 10 are integrally formed only with the second locking portions 11 at the upper and lower sides of the rear edge. There is. Attachment/detachment handles 21 are formed at the lower portions of both front sides of the filter frame 6. When removing the filter frame 6 from the front cover body 4, hold the handle 21 and slide it upward to disengage the second engaging part 13 of the second locking part 11, and then pull the handle 21 forward. Since the lower part of the filter frame 6 is not engaged with the front cover body 4 by the first elastic locking portion 10, it can be easily removed from the front cover body 4. However, since the upper part is elastically engaged with the front cover body 4 at the first elastic locking part 10, it is prevented from accidentally falling off, but it is not easily removed. Then, by pulling the handle 21 forward, the filter frame 6 is rotated using the upper edge that contacts the front cover body 4 as a fulcrum, and the elastic first locking part 10 and the first engaging part 12 are connected by lever principle. The engagement can be released with a small force without giving large vibrations to the filter frame 6.

In this structure, the filter frame 6 and the filter 7 are integrally formed, and if the filter 7 gets oily smoke, it can be cleaned and reused, or it can be disposable.

The filter frame 6 and the front cover body 4 are engaged only on both sides, and the lower part is in contact with the front cover body 4, so it can be used for a long time without cleaning and replacement, and there is no oil smoke on the filter frame 6 and the front cover body 4. Since no hole is formed in the lower part where a large amount of oily smoke tends to accumulate when a large amount of oily smoke adheres and flows down, the oily smoke is prevented from entering into the front cover body 4. Furthermore, by engaging on both sides, positioning during attachment/detachment work can be easily performed.

A projection 22 is formed at the tip of the inverted L-shaped elastic locking piece that forms the second locking portion 11, and the front cover body 4 is held between the projection 22 and the edge of the filter frame 6. 6 and the front cover body 4 are improved. Further, the protrusion 22 is a protrusion 2 on the inner surface of the front cover body 4.
By elastically engaging with 3, inadvertent upward movement is also prevented.

The structures shown in FIGS. 5 and 6 are designed to prevent the filter frame 6 from being attached to the front cover body 4 if the attachment direction is incorrect.

The structure shown in FIGS. 7 to 9 and the structure shown in FIG. 10 are obtained by adding an oil receiver to the structure shown in FIGS. 1 to 4 described above.

In FIG. 7 to FIG. 9, the rear wall 2 for forming an oil receiving portion is attached to the lower part of the filter frame 6 via a thin hinge portion 25.
6 are integrally formed. An oil receiving portion 27 is formed by closing the rear portion of the lower portion of the filter frame 6 with the rear wall 26. The rear wall 26 holds the lower rear surface of the filter frame 6 in a closed state by engaging elastic claws 28 formed on both sides with engagement recesses 29 on the inner surface of the filter frame 6.

A protrusion 30 is formed at the lower front surface of the front cover body 4, and when the filter frame 6 is attached to the front cover body 4, its upper edge engages with the protrusion 30 by utilizing the elasticity of the rear wall 26. The engagement of the rear wall 26 with the protrusion 30 prevents the filter frame 6 from moving upward relative to the front cover body 4. As a result, the protrusion 23 formed in FIGS. 1 to 4 is no longer necessary. By forming the protrusion 30 into a rib shape and engaging it over the entire width of the upper edge of the rear wall 26, oil smoke that is not collected by the filter 7 but adheres to the front cover body 4 and flows down can be efficiently removed from the oil receiver 27. I can guide you to.

In the structure shown in FIG. 10, the oil receiver 31 is formed as a separate part from the filter frame 6 and the front cover body 4. The oil receiver 31 is attached to the filter frame 6 or the front cover body 4
The filter frame 6 and the front cover body 4 may have a structure in which the filter frame 6 and the front cover body 4 are connected to each other. The oil receiver 31 is located below the front cover body 4 and the filter frame 6.
1 is partitioned into front and rear by a partition wall 32. The partition wall 32 is formed at the rear edge of the lower wall of the filter frame 6 by having its upper edge abut against the lower surface of the filter frame 6 and by abutting both sides and the rear wall of the oil receiver 31 with the filter frame 6 and the front cover body 4. An oil receiving space A that communicates only with the communicating hole 33 is formed. Therefore, air is taken in by the blower blades only through the filter 7 because the partition wall 32 comes into contact with the filter frame 6. The oil smoke collected by the filter 7 and the oil smoke flowing down along the front cover body 4 are collected in the oil receiver 31 through the communication hole 33. An oil cutting rib 34 is formed on the lower surface of the front cover body 4. Oil smoke adhering to the front surface of the filter frame 6 and flowing down is also collected at the front part of the oil receiver 31.

All of the above explanations are related to kitchen ventilation fans, but in the case of air purifiers and living room ventilation fans, most of what is collected by the filter 7 is dust and cigarette smoke, but oil Receiver part 27, oil receiver 3
1 is not necessary.

(g) Effects of the invention According to the invention, the filter frame can be attached to the main body by attaching the inverted L-shaped elastic stoppers provided at the top and bottom of the filter frame in two directions, one perpendicular to the body and the other parallel to the body. This is done by moving it in the direction and engaging it with the main body, so it can be installed reliably without any wobbling.

On the other hand, for removal, move the filter frame in the parallel direction to release the engagement of the second locking part provided on the inverted L-shaped elastic stopper with the main body, and then bring the upper part of the filter frame into contact with the main body. By rotating the filter frame using the part as a fulcrum, it is possible to release the engagement between the first locking part and the main body with a small force using the lever principle, and anyone can easily do this. Even if the engagement of the second locking portion is released, the filter frame is held on the main body by the first locking portion, and this can be done safely without accidentally falling off.

[Brief explanation of the drawing]

The figures show the present invention, and Figs. 1 to 4 show one structure, Fig. 1 is a side view of the main part,
Figure 2 is a cross-sectional plan view of the main parts, Figure 3 is a front view, Figure 4 is a front view with the filter frame removed, Figures 5 and 6 are front views of other structures with the filter frame removed. , Fig. 7 to Fig. 9 show other structures, Fig. 7 is a longitudinal side view of the main parts, Fig. 8 is a side sectional view of the filter frame, and Fig. 9 is an enlarged cross-sectional bottom view of the oil receiver. , FIG. 10 is a longitudinal side view of the main part of another structure. DESCRIPTION OF SYMBOLS 1...Frame body, 2...Blower blade, 4...Front cover body, 5...Main body, 6...Filter frame, 7...Filter, 10...Elastic first locking part, 11...Second Locking part, 12...first engagement part, 13...second engagement part.

Claims (1)

[Scope of utility model registration request] The filter frame includes a main body having a ventilation passage, a blower blade driven by an electric motor disposed in the ventilation passage, and a filter frame disposed to cover the suction opening of the ventilation passage. Inverted L-shaped elastic locking pieces protrude from the upper and lower parts of the surface facing the main body, respectively.
The upper inverted L-shaped elastic locking piece has a first locking part that elastically engages with the first engaging part of the main body when the filter frame moves in a direction perpendicular to the main body, and a first locking part that elastically engages with the first engaging part of the filter frame in a direction parallel to the main body of the filter frame. forming a second locking portion that hooks and engages with the second engaging portion of the main body by the operation, and forming only the second locking portion on the lower inverted L-shaped elastic locking piece;
With the second engagement part and the second locking part disengaged, the filter frame is rotated about the contact part between the main body and the upper part of the filter frame as a fulcrum, so that the first engagement part is released. A blower with a filter, characterized in that the engagement between the joint part and the first locking part is released.