JPH0426831Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a ventilation fan in which a decorative plate is provided in front of an oil pan panel surrounding an impeller.

[Conventional technology]

Figures 3, 4 and 5 are from the 1980s.
This is a conventional ventilation fan shown in Publication No. 114424, and in the figure, 1 is a main frame housing an electric motor 2 and an impeller 3 driven by the motor 2, and 4 is a main body frame in which the impeller 3 is installed in the front opening of the main body frame. 5 is a removable oil receiver that covers the lower edge of the oil receiver panel, and 6 is installed outside the back chamber of the main body frame 1. It is a shutter.

[Problem that the invention attempts to solve]

Conventional ventilation fans are constructed as described above, so the oil in the exhaust air first adheres to the impeller, is scattered by centrifugal force, adheres to the oil pan, and then flows down the front of the panel to the oil pan. Although the oil is collected in a container, there is a problem in that traces of the oil running down remain and the oil receiving panel becomes completely dirty. The purpose of this invention is to hide the oil stains on the front surface of the oil receiving panel.

[Means for solving problems]

In the case of this device, a decorative board is provided in an overlapping state on the front of the oil receiving panel, protruding from the front wall so as to maintain a predetermined oil flow gap, and having a ventilation hole in the center covering the front surface. This decorative board hides the dirty front surface of the oil pan.

[Effect]

In the case of this device, the oil scattered from the impeller collects at the orifice part of the oil pan, and is transmitted along the front of the oil pan through the oil flow gap between this and the decorative panel installed between this and the front wall. The oil is then collected in an oil container.

〔Example〕

An embodiment of this invention will be described below.
That is, in FIG. 1 and FIG. 2, the same parts as in the conventional one will be given the same reference numerals, and the redundant explanation will be omitted. A recessed groove 7 is provided in the peripheral edge of the front wall 4b along both side edges and the upper edge of the front wall 4b, excluding the lower edge against which the oil container 5 comes into contact. As shown in the figure, a decorative board 8 having a ventilation hole 8a in the center is fitted so as to form a predetermined oil flow gap 9 toward the indoor side from the front wall 4b of the oil receiving panel 4. It has characteristics.

That is, 7a in the figure is a locking hole provided in the bottom wall of the recessed groove 7 for inserting and locking the mounting foot 8b provided on the decorative board 8, and 8c is the front wall of the decorative board 8.
d is an oil flow lower gap 9 having approximately the same width between the front wall 4b of the oil receiving panel 4 and the front wall 8c of the decorative board 8, and between the orifice portion 4a of the oil receiving panel 4 and the narrowing portion 8f of the decorative board 8. 8e is the central ventilation hole 8 of the decorative board 8.
This is an annular curled part that expands outward and is formed on the opening edge of a.This is to prevent fingers from being cut at this part during cleaning, and to prevent oil splashed from the impeller from collecting in this part. to play the role of

In addition, the recessed groove in the above embodiment is configured in a square shape with the lower part open, and the reason why the recessed groove is not provided below is to prevent oil adhering to the oil receiving panel from flowing down into the oil receiving container. This is to do so.

When the impeller 3 is rotated in the above configuration, the oil 10 adhering to the impeller adheres to the inner surface of the orifice portion 4a, and successively descends along the front wall 4b, as shown in the figure. Gap 9
The oil is collected through the oil container 5.

[Effect of idea]

Since the ventilation fan of this invention is constructed as described above, even if the front wall of the oil pan panel becomes dirty with oil splashed from the impeller, this oil stain is hidden by the decorative panel on the front. The appearance will not be damaged by oil stains, and since this decorative board protrudes toward the indoor side by the amount of the oil flow gap mentioned above in a position where scattered oil from the impeller will not adhere, there will be less oil stains. Moreover, since the oil flow gap formed between the front wall and constriction part of the decorative board and the front wall and orifice part of the oil pan panel is made to have approximately the same width, the orifice effect due to the installation of the decorative board is reduced. can be eliminated. Furthermore, since the opening edge of the central ventilation hole of the decorative board is formed with an annular curled part that expands outward, there is no danger of cutting fingers at this part during cleaning.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the ventilation fan of this invention, Fig. 2 is a perspective view of the main parts showing its disassembled state, Fig. 3 is a front view of a conventional ventilation fan, and Fig. 4 is a partial side sectional view thereof.
FIG. 5 is a perspective view of the main part. In the figure, 1 is the main body frame, 2 is the electric motor, 3 is the impeller, 4 is the oil pan panel, 4a is the orifice part, 4
b is a front wall, 5 is an oil container, 7 is a recessed groove, 8 is a decorative board, 8a is a ventilation hole, 8e is an annular curl part, 8
f indicates the constriction portion, and 9 indicates the oil flow lower gap. In other figures, the same reference numerals indicate the same parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An oil pan panel having an orifice in the center and installed in the front opening of the main body frame housing the impeller and its driving electric motor so as to surround the impeller; A recessed groove is formed on the peripheral edge of the front wall of the oil receiving panel except for the lower edge where the oil receiving container comes into contact with. A central portion protruding from the groove to maintain a predetermined oil flow gap formed along the front wall and the orifice portion of the oil receiving panel so as to maintain substantially the same gap between the front wall and the orifice portion, and covering the front surface thereof. A ventilation fan characterized in that a decorative board having ventilation holes is fitted on the top. (2) The ventilation fan according to claim 1 of the utility model registration claim, in which an outwardly expanding annular curl portion is formed at the opening edge of a ventilation hole provided in the center of a decorative board covering the front wall of the oil pan panel.