JPH09324940A - Ventilating fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate cleaning of a fan by employing in forming the front cover a polypropylene resin having stereoregularity, which shows a ratio in which propylene units are oriented in the same direction, at a specific value and crystallinity at a specific value. SOLUTION: There are provided a tubular body 3 having an impeller 1 and a motor 2 inside, at an opening 4 of the body 3 having the impeller 1 and on the interior side a front cover 6 having a bell-mouthed part 5 which encloses the impeller 1, and an oil pan 7 at the lower end of the front cover 6. The impeller 1 is fixed to the motor 2 by the use of a spinner 8. Parts, such as the front cover 6 and impeller 1, are formed of a polypropylene resin in which propylene units are oriented in the same direction in the ratio of 98% or more with crystallinity of 70 to 80%. A resin material of the silicone series may be incorporated with a polypropylene with stereoregularity of 98% or more and crystallinity of 70 to 80% or a fluorocarbon resin may be incorporated with a polypropylene with stereoregularity of 98% or more and crystallinity of 70 to 80%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan installed in a kitchen or the like and used for exhausting oily smoke or the like.

[0002]

2. Description of the Related Art An example of a conventional ventilation fan will be described with reference to FIGS.

As shown in the figure, an electric motor 103 having blades 102 mounted in a frame-shaped main body 101 having front and rear openings is provided via support legs 104, and the blades 1 are provided at the front of the main body 101.
Front cover 10 having bell mouth 105 surrounding 02
6, a shutter 107 is provided at the rear, and the blade 10
2 and the front cover 106 were molded from a general-purpose polypropylene resin to form a ventilation fan.

[0004]

In such a conventional ventilation fan, when it is used by being attached to the wall surface of a room where oil smoke is generated, such as a kitchen, the front cover 106 and the blades 102 are used.
Since it is molded from a general-purpose polypropylene resin, it has good adhesion of oil smoke, and there are fine irregularities on the surface.When oil smoke adheres to the surface, oil particles etc. enter due to the irregularities and an anchor effect occurs, It was difficult to remove dirt when cleaning dirt such as oil smoke adhering to the front cover and blades.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a ventilating fan in which the parts made of resin material such as the front cover can be cleaned easily.

[0006]

In the ventilation fan of the present invention, the stereoregularity, which indicates the proportion of propylene units arranged in the same direction in the resin component such as the front cover attached to the main body, has a stereoregularity of 98% or more It is formed by molding with a polypropylene resin having a degree of conversion of 70% to 80%.

According to the present invention, it is possible to provide a ventilation fan having good cleaning properties for resin parts such as the front cover.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a bell which encloses the blade in a main body having a blade and an electric motor for driving the blade therein, and an opening on the indoor side of the main body. A front cover or the like having a mouse portion is provided, and at least the front cover has a stereoregularity of 98% or more indicating the proportion of propylene units arranged in the same direction and a crystallinity of 70% to
The structure is made of 80% polypropylene resin, the surface is dense and has no irregularities, and the particles such as fats and oils that do not have an anchoring effect on the surface have a weak adhesive force, and oils and fats are easily wiped off. The cleaning property of the resin parts such as the cover is improved.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

(Embodiment 1) As shown in FIGS. 1 and 2, a cylindrical main body 3 having a blade 1 and an electric motor 2 for driving the blade 1 therein is provided, and a chamber having the blade 1 of the main body 3 is provided. A front cover 6 having a bell mouth portion 5 surrounding the blade 1 is provided in the inner opening 4, an oil receiver 7 is provided at the lower end of the front cover 6, and the blade 1 is fixed to the electric motor 2 by a spinner 8.

In the parts such as the front cover and the blade 1, the proportion of propylene units arranged in the same direction is 98.
% Or more and the degree of crystallinity is 70% to 80%, and the surface of the resin component is molded to have a surface roughness of 0.05 μmRa or less.

In the above structure, the front cover 6 and
The surface of the resin component such as the blade 1 is very dense and has no irregularities, and the oil and fat adhered to the surface becomes weaker because the particles do not enter into the concave portions of the surface and the adhesion is strengthened and the anchor effect does not work.

As described above, according to the ventilation fan of the first embodiment of the present invention, it becomes easy to wipe off the oil and fat and the like adhering to the surfaces of the resin components such as the front cover and the blades 1.

(Embodiment 2) Further, in the parts such as the front cover 6 and the blades 1, the polypropylene resin has a proportion of propylene units arranged in the same direction of 98% or more and a crystallinity of 70% to 80%. The surface of the resin component has a surface roughness of 0.05 μmRa or less.
The mixed silicon-based resin material is formed so as to be distributed like a film on the surface.

In the above structure, the front cover 6 and
The surface of the resin component such as the blade 1 is very dense and has no irregularities, and the silicon-based resin material distributed in a film on the surface has a non-adhesive property, so that oil and fat adhered to the surface can be attached. The force of attachment will be weakened.

As described above, according to the ventilating fan of the second embodiment of the present invention, oils and fats and the like attached to the surfaces of the front cover 6 and the resin components such as the blades 1 can be easily wiped off.

(Embodiment 3) Further, in the parts such as the front cover 6 and the blades 1, the polypropylene resin has a proportion of propylene units arranged in the same direction of 98% or more and a crystallinity of 70% to 80%. Fluorine resin is mixed in and molded,
The surface of the resin component has a surface roughness of 0.05 μmRa or less, and the fluorine-based resin material mixed therein is configured to be distributed on the surface in a particulate form.

In the above structure, the front cover 6 and
The surface of the resin parts such as the blades 1 is very dense and has no irregularities, and the fluorine-based resin, which is distributed in the form of particles on the surface, has non-adhesive properties, and the adhesion force of oils and fats etc. Will be weakened.

As described above, according to the ventilating fan of the third embodiment of the present invention, oils and fats and the like attached to the surfaces of the front cover 6 and the resin components such as the blades 1 can be easily wiped off.

(Embodiment 4) Further, in the parts such as the front cover 6 and the blades 1, the proportion of propylene units arranged in the same direction is 98% or more, and the crystallinity is 70% to 80% in polypropylene resin. The surface of the resin component has a surface roughness of 0.0 when the silicon resin material and the fluorine resin material are mixed and molded.
When it is 5 μmRa or less, the mixed silicon-based resin material is distributed on the surface in a film shape, and the fluorine-based resin material is distributed on the surface in a particle shape.

In the above structure, the front cover 6 and
The surface of the resin component such as the blade 1 is very dense and has no unevenness, and the silicon-based resin material distributed in a film shape on the surface and the fluorine-based resin material distributed in a particle shape on the surface are not Since it has an adhesive property, the adhesive force of oils and fats adhered to the surface is weakened.

As described above, according to the ventilating fan of the fourth embodiment of the present invention, oils and fats attached to the surfaces of the front cover 6 and the resin components such as the blades 1 can be easily wiped off.

[0023]

As described above, according to the present invention, the ratio of the propylene units arranged in the same direction in the resin component such as the front cover attached to the main body is 98% or more, and the crystallinity is 7%.
By molding with 0% to 80% polypropylene resin, the surface of the resin component such as the front cover is dense and has no irregularities, and oils and fats adhering to the surface can be easily wiped off, and a ventilation fan with good cleaning performance can be provided. .

By molding a resin component such as a front cover attached to the main body with a dense polypropylene resin having a surface mixed with a silicon resin material,
The surface of resin parts such as the front cover is dense and has no irregularities, and the silicon-based resin material distributed in a film along the dense and even surface is non-adhesive, and oils and fats adhering to the surface can be easily wiped off. It is possible to provide a ventilation fan with good cleaning performance.

Further, by molding a resin component such as a front cover attached to the main body with a mixture of a dense polypropylene resin and a fluorine resin material, the surface of the resin component such as the front cover is dense and uneven. It is possible to provide a ventilating fan having a good cleaning property, since the fluorine-based resin, which is dense and has a particle-shaped distribution along a surface without any unevenness, is non-adhesive and oils and fats attached to the surface are easily wiped off.

By molding a resin component such as a front cover attached to the main body with a dense polypropylene resin mixed with a silicon-based resin material and a fluorine-based resin material, the surface of the resin component such as the front cover is Provide a ventilation fan that is dense and has no irregularities, and that silicone-based and fluorine-based resins that are distributed along a dense and even surface are non-adhesive and that oils and fats that adhere to the surface can be easily wiped off and that cleaning is easy. You can

[Brief description of drawings]

FIG. 1 is a front view showing a ventilation fan according to first to fourth embodiments of the present invention.

FIG. 2 is a cross-sectional view showing a ventilation fan of Embodiments 1 to 4 of the present invention.

FIG. 3 is a front view showing a conventional ventilation fan.

FIG. 4 is a sectional view showing the ventilation fan.

[Explanation of symbols]

 1 Blade 2 Electric motor 3 Main body 5 Bell mouth part 6 Front cover

Claims (4)

[Claims] 1. A main body provided with blades and an electric motor for driving the blades inside, and a front cover having a bell mouth portion surrounding the blades in an opening on the indoor side of the main body. At least the front cover. A ventilation fan formed by molding a polypropylene resin having a stereoregularity of 98% or more and a crystallinity of 70% to 80% indicating the proportion of propylene units arranged in the same direction. 2. The stereoregularity is 98% or more and the crystallinity is 70.
The ventilation fan according to claim 1, wherein a polypropylene resin of 80% to 80% is mixed with a silicone resin material. 3. The stereoregularity is 98% or more and the crystallinity is 70.
The ventilation fan according to claim 1, wherein a fluorine resin material is mixed in the polypropylene resin of 80% to 80%. 4. Stereoregularity is 98% or more and crystallinity is 70.
The ventilation fan according to claim 1, wherein a silicone resin material and a fluorine resin material are mixed in a polypropylene resin of 80% to 80%.