JPH031737Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to ventilation fans, and in particular,
This invention relates to a ventilation fan in which a filter is detachably provided on the upstream side of the ventilation path of the ventilation fan body.

[Prior Art] Figures 3 to 6 show conventional ventilation fans. Fig. 3 is an exploded perspective view showing the configuration of a conventional ventilation fan, Fig. 4 is an overall perspective view of the filter of the conventional ventilation fan, Fig. 5 is a sectional view taken along line A-A in Fig. 4, and Fig. 6 is a panel. It is a perspective view which shows the state in the middle of attaching or detaching a filter to.

In the figure, 1 is a ventilation fan main body, 2 is a motor attached to the center of the ventilation fan main body 1 by a support member 3, 4 is a blade attached to the motor 2, and 5 is a front part of the ventilation fan main body 1, and the blade 4 A fan shroud having a conical surface surrounding the fan shroud 5, 6 is an L-shaped hook protruding from two places at the upper front of the fan shroud 5, and 7 and 8 are a panel locking hole and an oil reservoir penetrated through the lower front of the fan shroud 5. Locking hole, 9 is panel, 10 is panel 9
12 is a large ventilation passage opening provided on the front side of the panel 9; 13 is an oil sump insertion hole provided adjacent to the lower part of the ventilation passage opening 12; The holes 14 are inverted L holes that penetrate through the panel 9 at two locations above and below on both sides of the ventilation passage opening 12.
A letter-shaped filter locking hole 15 is a panel locking claw protruding rearward from the lower side of the oil reservoir insertion hole 13 on the back side of the panel 9, and a panel locking claw 16 is large enough to cover the ventilation passage opening 12 of the panel 9. This is a rectangular filter with a filter frame 17 and a filter element 18 fixed to the rear surface of the filter frame 17. Reference numerals 19 and 19 designate filter locking claws that project rearward at positions corresponding to the filter locking holes 14 on both rear edges of the filter frame 17, and 20 project forwardly on both sides of the lower front surface of the filter frame 17. A plate-shaped knob 21 provided at the rear is sized to fit into the oil reservoir insertion hole 13 and is inserted into the insertion portion 2.
1a is a saucer-shaped oil reservoir, 22 is an insertion part 2
This is an oil sump locking pawl that projects rearward at a position corresponding to the oil sump locking hole 8 on the rear wall of 1a.

A conventional ventilation fan is constructed as described above and assembled as follows.

That is, the panel 9 is attached to the front surface of the fan shield 5 by hooking the hook hole 10 of the panel 9 onto the hook 6 of the fan shield 5 and pushing the lower panel locking claw 15 into the panel locking claw 7 of the fan shield 5.

Next, push the upper part of the filter 16 into the upper front surface of the ventilation passage opening 12 of the panel 9 as shown in FIG. in,
Place the step at the tip of the filter locking claw 19 behind the back surface of the panel 9, and hold the knob 20 to pull the filter 16 downward. The filter locking claw 19 moves to the narrow part at the bottom of the filter locking hole 14, and the step at the tip of the filter locking claw 19 engages with the back surface of the panel 9, and the filter 1 is attached to the panel 9.
6 is installed. After that, by inserting the insertion part 21a of the oil sump 21 into the oil sump insertion hole 13 of the panel 9 and inserting the oil sump locking claw 22 into the oil sump locking hole 8 of the fan shroud 5, the oil sump 21 is inserted.
1 to the fan shroud 5. When the filter 16 becomes dirty with oil droplets or the like when using this ventilation fan, lift the filter 16 upward by the knob 20 and move the filter locking claw 19 to the upper wide part of the filter locking hole 14. Then, by pulling it forward using the knob 20, it can be attached and detached from below as shown in FIG.

In this way, the dirty filter 16 can be discarded and a new filter 16 installed by reversing the procedure.

[Problems to be solved by the invention] The conventional ventilation fan as described above has a filter 16.
The filter frame 17 is integrated with the filter element 18.
Since the filter 16 is configured to maintain its shape by itself, the cleaning efficiency of the ventilation fan is significantly improved when it is attached to and removed from the ventilation fan and when it is replaced. However, when the filter 16 is disposed of, the There was a problem with the disposal form because it could not be folded up and was bulky and difficult to handle.

This invention was made to solve this problem, and the purpose is to obtain a ventilation fan with a filter that is not bulky and easy to handle during disposal.

[Means for Solving the Problems] The ventilation fan according to this invention is provided with a thin wall portion having low bending rigidity at one or more locations on the filter frame of the filter, and a clamping portion that clamps the thin wall portion on the panel. It was established.

[Function] In this device, when the filter panel is attached, the holding portions hold the thin wall portion of the filter frame to prevent the filter frame from bending, and when discarded, the filter frame is folded at the thin wall portion to make it smaller. be able to.

[Embodiment] FIG. 1 and FIG. 2 show an embodiment of this invention.
FIG. 1 is a perspective view showing a filter according to an embodiment of the invention, and FIG. 2 is a partial cross-sectional view from the side showing the filter according to the embodiment inserted into a ventilation fan.

The ventilation fan main body 1 and the fan shroud 5 are exactly the same as those of the conventional device described above. Although not shown, the ventilation fan body 1 is provided with a motor 2, a support member 3, and a blade 4 inside, and the fan shroud 5 has a hook part 6, a panel locking hole 7, and an oil sump locking hole 8 on the front side thereof.
has. The panel 9 is also the same as the above-mentioned conventional device except for a part, and has a ventilation passage opening 12 and an oil reservoir insertion hole 13 at the center and lower part of the front surface, a hook hole 10 on the top surface, and a ventilation passage opening 12. Filter locking holes 14 are provided on both sides of the panel, and panel locking claws 15 are provided on the lower back surface.

On the inner surface of the upper center of the filter 16 (a position corresponding to a thin wall portion of the filter 16 described later), an upper clamp holding piece 23 whose tip is bent rearward is provided to protrude vertically downward. This upper scoop holding piece 23
The distance between this and the side surface of the upper front surface of the panel 9 on the side of the ventilation passage opening 12 is set to be somewhat larger than the thickness of the corresponding portion of the filter 16, which will be described later. Also, the center of the lower side of the ventilation passage opening 12 of the panel 9 (a position corresponding to the thin wall part of the filter 16, which will be described later).
includes a lower rear clamping piece 2 that extends horizontally toward the front.
4 has been extended. The oil sump 21 is also connected to the insertion part 21a and the oil sump locking claw 2 in the same way as in the conventional device described above.
Furthermore, a lower front clamping piece 25 is provided horizontally protruding rearward at a position corresponding to the lower rear clamping piece 24 on the central rear surface of the front wall. The distance between the tips of the lower rear clamping piece 24 and the lower front clamping piece 25 is set larger than the thickness of the corresponding portion of the filter 16, which will be described later. Upper scoop holding piece 23
The center portion of the upper front wall of the panel 9, the lower rear clamping piece 24, and the lower front clamping piece 25 together constitute upper and lower clamping parts of the filter 16. Filter 1 of this example
6 is composed of a filter frame 17 and a filter element 18 that are integrally connected, similar to the above-mentioned conventional device,
It is also provided with a filter locking pawl 19 and a knob 20, and in addition, the filter frame 17 has a thin walled portion 26 hollowed out in a V-shape from the front in the center of both the upper and lower sides. In this embodiment, the upper and lower thin-walled portions 26 are determined to be located on the folding line 11 at the time of disposal determined from the shape of the filter 16, and the wall thickness is such that it can be folded by hand along the folding line 11. The bending stiffness is determined to be as small as possible.

In the ventilation fan configured as described above, the attachment and detachment of the filter 16 to and from the panel 9 is exactly the same as in the conventional device. In the installed state shown in FIG.
The upper and lower clamping pieces 23, which are the upper and lower clamping parts, the center part of the upper front wall of the panel 9, the lower rear clamping piece 24, and the lower front clamping piece 2
Filter 1 is sandwiched from the front and back by 5.
6 will not bend due to wind pressure when operating a ventilation fan. Filter 16 removed from panel 9
can be easily folded around the folding line 11 as shown in the figure to make it smaller.

[Effects of the invention] As explained above, this invention has a thin wall part in the filter frame that constitutes the filter, and a clamping part that clamps the thin wall part on the panel, so that when it is installed on the panel, it will not be clamped by the clamping part. It does not bend due to wind pressure, etc., and can be easily folded and packed into a small size when attached or detached, so it will not be bulky when discarded.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a filter according to an embodiment of this invention, Fig. 2 is a partial cross-sectional view from the side showing the filter of the above embodiment inserted into a ventilation fan, and Fig. 3 is a view of a conventional ventilation fan. Figure 4 is an overall perspective view of a conventional ventilation fan filter, Figure 5 is a sectional view taken along the line A-A in Figure 4, and Figure 6 shows how the filter is attached to or removed from the panel. FIG. 3 is a perspective view showing an intermediate state. In the figure, 1...Ventilation fan body, 9...Panel, 16...Filter, 17...Filter frame, 23...Upper clamping piece, 24...Lower rear clamping piece, 2
5...lower front clamping piece, 26...thin wall portion. In addition, in the figures, the same reference numerals and symbols indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A panel with a ventilation path formed on the front of the ventilation fan body,
A ventilation fan having a filter frame and a filter detachably attached to the panel,
A ventilation fan characterized in that the filter frame is provided with one or more thin-walled portions, and the panel is provided with a holding portion corresponding to the thin-walled portion for holding the thin-walled portion.