JPH0113941Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a ventilation fan for home kitchens, and more specifically, a ventilation fan for home kitchens that allows easy cleaning of internal dirt such as oil stains and simplifies the structure for attaching to the motor. Regarding.

For home kitchen ventilation fans that use centrifugal fans to exhaust air in the direction of the fan rotation axis, for example,
As shown in No. 20883, multiple baffle plates were installed radially behind the centrifugal fan to increase the amount of exhaust air.

However, with such a ventilation fan for home kitchens, even if you try to clean the internal dirt of the air guide cylinder, you will not be able to get your hands or fingers into the corners, which will not only make cleaning work difficult, but also cause damage to the house. It has the disadvantage that it is difficult to easily tighten the mounting bolts for fixing it to the side.

This invention makes it easy to clean oil stains by putting your hands and fingers inside, and also makes it easy to tighten the mounting bolts.It also simplifies the motor mounting structure. , aims to eliminate the above drawbacks. In order to achieve such an object, the present invention provides a ventilation fan for home kitchens that uses a centrifugal fan to exhaust air in the direction of the fan rotation axis, in which at least the rear position of the blade board of the front cover is formed into a polygonal shape, and the front cover is Two rectifying plates are provided in the baffle cylinder provided at the rear, and the baffle plates are bent at right angles so as to partition the opposing corners of the buff cylinder into a polygonal shape.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings showing examples.

Fig. 1 is a partially cutaway front view of the ventilating fan of the present invention, and Fig. 2 is a longitudinal sectional side view of the same, showing a front cover 1 with a circular intake hole 2 on the front, and a front cover 1 with a circular intake hole 2 on the front.
It consists of a wind guide cylinder 3 which is installed continuously behind the house wall 4 and inserted through a rectangular through hole 5 of the house wall 4, a rectifier plate 6 that partitions the inside of the wind guide cylinder 3, a motor 7, and a fan 8. There is.

The front cover 1 is a cylindrical body that rotatably houses a fan 8, and has an oil reservoir 10 on its bottom plate 9.

The front cover 1 has a polygonal cross-section as shown in FIGS. 1 and 2, and has a circular hole as an air suction port 7 on the front surface.

By making the front cover polygonal at least at the rear of the vane substrate, exhaust air in the direction of the fan rotation axis is smoothed, and no swirling flow occurs as in the case of a front cover having a circular cross section.

The wind guide cylinder 3 is a cylindrical body that is smaller than the rectangular through hole 5 in the house wall 4 (for example, 25 to 30 cm x 25 cm).
30 cm), by extending the lower plate 11 outward from the wall surface, the exhaust hole 12 is formed into an inclined shape, thereby supporting the shutter 13 in an inclined shape. In addition, 14
1 is a spacer provided on the lower plate 11, and 15 is a mounting bolt screwed into and passed through the upper plate 16.

As shown in FIG. 3, the current plate 6 is formed by bending one flat plate at right angles to form a horizontal plate 17 and a vertical plate 18, and bending the tip edges of the horizontal plate 17 and the vertical plate 18. to form the flanges 19 and 20,
Furthermore, the motor mounting piece 21 is formed by pulling out a predetermined position near the front end of the vertical plate 18 and bending it in the opposite direction to the bending direction of the horizontal plate 17 to form a vertical mounting piece. Note that 22 is a bolt for attaching the motor.

FIG. 4 is a front view showing the attachment relationship between the baffle cylinder 3, the rectifier plate 6, and the motor 7. The vertical plate 18 of one of the baffle plates 6 is connected to the lower left corner to define a rectangular shape, and the horizontal plate 17 of the other baffle plate 6 is connected to the right inner surface of the baffle body 3. Vertical plate 18 of the other rectifying plate 6
are connected to define a rectangular upper right corner, and the motor 7 is supported by motor mounting pieces 21, 21 of both rectifier plates 6, 6.

The fan 8 is formed by connecting a plurality of blades 25 to a blade substrate 24 connected to the rotating shaft 23 of the motor 7.

The function of the ventilation fan configured as above is as follows.

By inserting the wind guide cylinder 3 into the rectangular through hole 5 of the house wall 4 and screwing the mounting bolt 15, the wind guide cylinder 3 can be held in a manner that prevents it from coming off. In this state, the front case 1 is connected to the air guide body 3 to complete the installation of the ventilation fan.

Therefore, if the fan 8 is rotated by being electrically connected to the motor 7, exhaust can be evacuated in the axial direction.

In addition, inside the wind guide body 3 (for example, 25 to 30 cm x 25 to 30
cm) is only divided by a pair of rectifying plates 6, which are formed by bending horizontal plates and vertical plates. When attaching and detaching the body 3, the mounting bolts can be easily tightened and loosened.

As described above, in this invention, the diagonal corners of the baffle body are divided into polygonal shapes using rectifying plates, making it easy to insert hands and fingers, making it easier to clean oil stains and tighten and loosen mounting bolts. It is easy to carry out, and since the motor is attached using a rectifying plate, it has unique practical effects such as simplifying the configuration of a ventilation fan for home kitchens.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the ventilation fan, Fig. 2 is a vertical cross-sectional side view of the same, Fig. 3 is a perspective view of the rectifying plate 6, and Fig. 4 is a diagram showing the arrangement of the wind guide body 3, the rectifying plate 6, and the motor 7. A front view showing the attachment relationship. 3... Wind guide cylinder, 5... Square through hole, 6... Rectifying plate, 7... Motor, 8... Fan, 15... Mounting bolt, 17... Horizontal plate, 18... Vertical plate, 21
...Motor mounting piece.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a ventilation fan that uses a centrifugal fan to exhaust air in the direction of the fan rotation axis, at least the rear position of the blade board of the front cover is formed into a polygonal shape, and the air guide cylinder is provided at the rear of the front cover. A ventilation fan for a home kitchen, characterized in that two rectifying plates are provided inside the fan, and the rectifying plates are bent at right angles so as to partition the opposing corners of the wind guide cylinder into a polygonal shape. 2. A ventilation fan for home kitchens according to claim 1, which is a utility model and has two rectifying plates provided with support pieces for fixing the motor.