JPS6022253Y2 - ventilation fan - Google Patents

Description

[Detailed description of the invention] This invention relates to a ventilation fan in which an oil collection filter is provided on the suction side of the ventilation fan body, and particularly relates to a structure that prevents oil from dripping from the oil collection filter.

Ventilation fans used in kitchens, etc. must be cleaned frequently because oil adheres to the exhaust blower 1, shutters, etc. due to the suction of oily smoke.For this reason, oil-collecting filters have traditionally been provided on the intake side of ventilation fans. It's here.

A conventional ventilation fan equipped with the oil-collecting filter is shown in FIG.

FIG. 1 shows a ventilation fan generally called a range hood fan, where 1 is a ventilation fan body consisting of an exhaust blower 2, a frame 3, etc., 4 is a filter frame 5, as shown in detail in FIG.
This oil-collecting filter is constructed by placing an oil-collecting filter element 6 and a lattice-shaped filter frame 7 with a flat surface in close contact with each other, and is tilted and held by a filter receiver 8 on the suction side of the ventilation fan main body 1. There is.

Further, reference numeral 9 denotes an oil receiver that is bent inward and 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 exhausted through the oil collection filter 4.

At this time, the oil collecting filter element 6 collects oil in the smoke,
Prevents the exhaust blower 2 etc. from getting dirty with oil.

The collected oil mainly passes through the inclined oil collection filter element 6 and accumulates in the oil pan 9.

Also, Fig. 3 shows a normal ventilation fan, where 1 is an exhaust blower 2,
The ventilation fan body consists of a frame 3, a guide plate 10, a shutter 11, etc., and 4 is a filter frame 5 as shown in detail in FIG.
, an oil-collecting filter element 6, and a lattice-shaped filter frame 7 with a flat surface, each of which are brought into close contact with each other.

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 also collects oil in the same way as the range hood fan shown in FIG.

By the way, in the conventional type, as described above, the oil collected by the oil collecting filter element 6 travels through the oil collecting filter element 6 and is collected in the lower oil receiver 9.
More oil is present in the lower part of the oil collecting filter element 6, which causes clogging of the lower part of the oil collecting filter element 6, causing an increase in pressure loss and noise.

In addition, before the oil collected by the oil collecting filter element 6 passes through the oil collecting filter element 6 and goes to the lower oil pan 9, it is transferred to the horizontal crosspiece of the filter frame 7 that is in close contact with the oil collecting filter element 6. There was a problem with the water being blocked by the water and dripping onto the microwave or the food being cooked.

This invention provides a ventilation fan that can improve the above-mentioned drawbacks.

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

That is, as shown in the figure, all of the horizontal bars 7A in the filter frame 7 except for the top horizontal bar, the open side is on the oil collecting filter element 6 side, and the height of the lower side surface A of each horizontal bar 7A is the same as the upper side surface B. A concave oil receiver 7B is formed by forming the oil plate into an L shape across the gold mine so that it is shorter than the height.

Then, oil is collected only at the end of the lower side surface A of each horizontal bar 7A so that a part of the oil adhering to the oil collecting filter element 6 flows down the lower side surface A of each horizontal bar 7A and accumulates in this oil receiver 7B. It is brought into close contact with the surface of the filter element 6.

With this configuration, the oil adhering to the oil collecting filter element 6 tends to flow downward through the oil collecting filter element 6, but the oil adhering to the oil collecting filter element 6 tends to flow downward through the oil collecting filter element 6. is in close contact with the surface of the oil collecting filter element 6, so some of the oil is absorbed into the lower side surface A of the horizontal bar 7A.
The oil will be collected in the oil pan 7B of the horizontal rail 7A.

As a result, there is not much oil in the lower part of the oil collecting filter element 6, and clogging of the lower part of the oil collecting filter element 6 is reduced.

In addition, the oil is blocked by the horizontal bar 7A of the filter frame 7 before reaching the oil pan 9, so that it does not drip onto the food being cooked in the microwave.

In this embodiment, the oil flowing into the horizontal bars 7A is collected in the oil pans 7B of each horizontal bar 7A, but as the horizontal bars 7A are inclined, the oil pans 7B of the horizontal bars 7A are also
By forming an oil receiver that communicates with the oil receiver, the oil may be stored in the lower oil receiver 9 through the oil receiver 7B of the horizontal bar 7A and the oil receiver of the vertical bar.

As described above, according to this invention, it is possible to prevent clogging at the bottom of the oil collection filter element, which causes an increase in pressure loss and noise, and also to prevent oil dripping from the filter surface. can.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional example, FIG. 2 is a perspective view showing a part of the filter, FIG. 3 is a perspective view showing another conventional example, and FIG. 4 is a perspective view showing a part of the filter. FIG. 5 is a sectional view showing an embodiment of this invention. In addition, the same reference numerals in the figures indicate the same or equivalent parts, 1 is the ventilation fan main body, 4 is the oil collection filter, 6 is the oil collection filter element, 7 is the filter frame, 7A is the horizontal bar, and 7B is the oil pan. .

Claims (1)

[Scope of utility model registration request] An oil collecting filter consisting of an oil collecting filter element and a filter frame having a plurality of horizontal bars is provided on the suction side of the ventilation fan main body so that the oil collecting filter element is on the ventilation fan main body side, A part of the horizontal bars of the filter frame is brought into close contact with the surface of the oil collecting filter element so that oil adhering to the oil collecting filter element flows into the horizontal bars of the filter frame, and the horizontal bars of the filter frame are A ventilation fan that has an oil receiver installed on the horizontal crosspiece of the filter frame to catch the oil that has flowed into the filter frame.