JPS6119399Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a ventilation fan for a room in which an oil-collecting filter is provided in the ventilation fan body, and particularly relates to a structure for preventing oil from dripping from the filter frame of the filter.

Ventilation fans used in rooms have to be cleaned frequently because oil adheres to the exhaust blower, shutter, etc. due to the suction of oily smoke.For this reason, an oil-collecting filter has traditionally been installed in front of the ventilation fan's suction port. I've been exposed to it. A conventional ventilation fan equipped with the oil-collecting filter is shown in FIGS. 1 and 3. Fig. 1 shows a ventilation fan generally called a range hood fan, where 1 is a ventilation fan main body consisting of an exhaust blower 2, a frame 3, etc., 4 is a filter holder 5, and an oil filter as shown in detail in Figs. The oil collecting filter is composed of a collecting filter element 6 and a lattice-shaped filter frame 7 with a flat surface. is maintained. Reference numeral 9 denotes an oil receiver provided around the opening of the frame 3 of the ventilation fan main body 1.

The conventional range hood fan is configured as described above, and smoke containing oil generated during cooking is sucked in by the exhaust blower 2 and introduced into the suction port (not shown) through the filter 4. , is ejected. At this time, the filter 4 collects oil in the smoke and prevents the exhaust blower 2 and the like from becoming contaminated with oil. The collected oil then flows through the inclined filter 4 and accumulates in the oil receiver 9.

FIG. 4 shows a normal ventilation fan. Reference numeral 1 denotes a ventilation fan main body consisting of an exhaust blower 2, a frame 3 having a bellmouth-shaped guide plate 10, a shutter 10, etc., and has a suction port 1a open at the front. As shown in detail in FIG. 5, reference numeral 4 denotes an oil collecting filter composed of a filter holder 5, an oil collecting filter element 6, and a lattice-shaped filter frame 7 with a flat surface. It is installed vertically and fixed in front. Reference numeral 9 denotes an oil receiver that is detachably provided at the bottom of the filter frame 7 with a screw 12.

This ventilation fan can also collect oil in the same way as the range hood fan shown in FIG.

Incidentally, the amount of oil smoke sucked in by a ventilation fan is generally quite large, and a considerable amount of oil adheres to the surface of the filter frame 7 within a short period of time before the oil is collected by the filter element 6. However, in conventional ventilation fans, little consideration is given to the treatment of attached oil with respect to the filter frame 7, and as described above, the surface of the filter frame 7 is often flat.

In such a filter frame 7, the adhering oil does not properly flow down the filter frame 7 to the oil pan 9 provided at the bottom of the filter frame 7, and drips on the way and enters the microwave or the food being cooked. There was a problem.

This invention provides a ventilation fan for a room that can eliminate the above-mentioned conventional problems.

For this reason, this idea was designed to
A guide part consisting of continuous grooves or protrusions is formed to guide the adhered oil close to the oil receiver, and the oil is guided from the upper part to the lower part of the filter frame via this guide part.

An embodiment of this invention will be described below with reference to FIG.

In the embodiment of this invention, as shown in the figure, a plurality of lateral grooves 13 continuous in the horizontal direction and a plurality of vertical grooves 14 continuous in the vertical direction intersecting the lateral grooves 13 are formed on all the bars on the surface of the filter frame 7. are doing. Although the vertical groove 14 is not shown, it is formed from the upper end to the lower end of the surface of the filter frame 7 so as to extend to a position facing the oil receiver 9. The rest of the structure is the same as the conventional one shown in FIGS. 1 to 5, so the same parts are given the same reference numerals and the explanation will be omitted. With the above configuration, the oil adhering to the surface of the filter frame 7 is received by the horizontal grooves 13 and the vertical grooves 14, and it is prevented from dripping on the way. Further, the oil received in the vertical groove 14 naturally flows downward due to its own weight, drips into the oil receiver 9, and accumulates therein.

In this embodiment, the horizontal grooves 13 are formed in the horizontal direction, but the vertical grooves 13 are formed so that there are no horizontal portions.
4, all of the oil received in the horizontal grooves 13 flows into the vertical grooves 14 and all of it accumulates in the oil receiver 9 through the vertical grooves 14, so that the effect of preventing oil dripping is further improved. Further, in this embodiment, the guide portion for receiving the oil adhering to the filter frame 7 is formed into a groove, but it may also be formed into a projection on a bar or the like. It goes without saying that a combination of a protrusion inclined in this manner and a longitudinal groove connected to the protrusion may also be used.

Furthermore, the guide portion for receiving oil may not only be provided on the surface of the filter frame 7 as in the embodiment shown in FIG. 6, but may also be provided on the surface facing the filter element 6, that is, the back surface of the filter frame 7.

As described above, this invention has a structure in which a guide section consisting of continuous grooves or protrusions is provided on the surface of the filter frame to guide the oil close to the oil pan, so that the oil adhering to the filter frame is removed from the filter frame. The guide section consisting of grooves or protrusions formed on the surface of the filter absorbs the oil and guides it to the lower oil pan without dripping on the way, so that the oil adhering to the filter frame is removed from the top or center of the filter frame, unlike conventional oil. It has the excellent effect of minimizing the risk of the product dripping onto the microwave or into the food being cooked.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the first conventional example, Fig. 2 is a perspective view showing the configuration of only the filter section, and Fig. 3
The figure is a perspective view showing details of the filter frame in Figure 2;
FIG. 4 is a sectional view showing a second conventional example, FIG. 5 is an enlarged perspective view showing only the structure of the filter section, and FIG. 6 is a perspective view showing an embodiment of this invention. In addition, the same symbols in the figures indicate the same or equivalent parts,
1 is a ventilation fan body, 1a is a suction port, 2 is an exhaust blower, 4 is an oil collection filter, 6 is an oil collection filter element, 7 is a filter frame, 13 is a horizontal groove, and 14 is a vertical groove.

Claims (1)

[Scope of utility model registration request] Ventilation fan main body 1 having an exhaust blower 2 and sucking air from an inlet 1a by the blower
, a filter frame 7 provided in front of the suction port 1a of the ventilation fan body so as to cover it, an oil collecting filter element 6 installed between this filter frame and the ventilation fan body 1, and the filter frame. In the filter frame, the surface of the filter frame has continuous grooves 13 and 14 that guide oil in the suction air adhering to the surface to near the oil pan 9. Alternatively, a ventilation fan for a room is formed with a guide portion consisting of protrusions.