JPH074705A - Ventilation fan - Google Patents

Abstract

(57) [Summary] [Purpose] In the ventilation fan, the oil inlet is blocked, and the function of preventing oil from falling down along the outer wall surface of the oil receiver is maintained, and the cleanability of the orifice frame is maintained. The purpose is to improve. [Structure] Electric motor 7 having blades 6 fixed inside body frame 5
, A plurality of shutter plates 10 rotatably supported on the outdoor 4 side of the ventilation fan main body 8, an orifice frame 12 provided on the indoor side of the ventilation fan main body 8 for guiding air to the blades 6, An oil receiver 13 is provided at the lower end of the orifice frame 12, has a substantially box shape with an open upper surface, and has an oil receiver 13 that forms an oil inlet 17 between the front wall 15 and the inclined portion 16 of the orifice frame 12. A protrusion 14 is provided which abuts the rear ends of both ends of the orifice frame 12 to the rear ends of the oil receiver 13 to position the oil receiver 13 in the front-rear direction and secure a minimum size required for the function of the oil inlet 17. The ventilation fan will be provided.

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 on the wall of a room such as a kitchen for discharging oil smoke generated during cooking to the outside.

[0002]

2. Description of the Related Art Conventionally, this type of ventilation fan has been disclosed, for example, in Japanese Utility Model Publication No. 4-38180.
The configuration will be described below with reference to FIGS. 3 and 4.

As shown in the figure, an electric motor having blades 106 fixed to the inside of a box-shaped body frame 105 that is inserted and installed in an opening 102 provided in a chamber wall 101 and opens on the indoor 103 side and the outdoor 104 side. Ventilation fan body 1 with 107
A plurality of shutter plates 1 that are rotatably supported to open and close the outdoor opening 104a of the outdoor plate 104 on the outside 104 side.
09 are provided.

On the indoor 103 side of the ventilation fan main body 108, there is provided an orifice frame 110 which covers the indoor opening 105b and guides air to the blades 106, and the lower end of the orifice frame 110 has an upper surface opened. Substantially box-shaped oil receiver 1
11 is provided detachably from the front of the orifice frame 110, and this oil receiver 111 has a front wall 111a.
An oil inflow port 112 is formed between the upper end portion of the above and an inclined portion 110b provided at the lower front surface of the orifice frame 110. The oil inlet 112 has a plurality of protrusions 113 protruding from the inclined portion 110b of the orifice frame 110.

In the above structure, when the electric motor 107 is energized and the blades 106 are rotated, the oil smoke generated during cooking is guided to the orifice frame 110, passes through the inside of the main body frame 105, and is discharged to the outside 104. The oil contained in the oil smoke is blown to the surroundings by the blades 106, adheres to the inner peripheral surface 110a of the orifice frame 110, flows downward along the inner peripheral surface 110a and the inclined portion 110b, and the oil flow The oil flows into the oil receiver 111 from the inlet 112 and is stored therein. At this time, the front wall 111a of the oil receiver 111 is deformed due to molding distortion or the like, contacts the inclined portion 110b of the orifice frame 110 and blocks the oil inlet 112, and oil is the outer wall surface of the front wall 111a of the oil receiver 111. This deformation is corrected by the projection 113 so that it will fall downward along the
Had been prevented.

[0006]

In the structure of such a conventional ventilation fan, which is an oil flow path, a plurality of protrusions 1 are formed from the inclined portion 110b of the orifice frame 110 which is most likely to be contaminated.
Since 13 is protrudingly provided at the oil inflow port 112, when cleaning the orifice frame 110, the protrusion 113 of the inclined portion 110b is formed.
There is a problem that it takes time to remove stains in the vicinity.

The present invention solves the above-described problems, and maintains the function of preventing the oil from flowing down the outer wall surface of the oil receiver and blocking the oil inlet, and cleaning the orifice frame. The purpose is to provide a ventilation fan with improved performance.

[0008]

In order to achieve the above object, the present invention is inserted and installed in an opening provided in a chamber wall,
Inside the box-shaped body frame that opens inside and outside,
A ventilation fan main body provided with an electric motor with fixed blades, a plurality of shutter plates rotatably supported to open and close the outdoor side opening of the ventilation fan main body, and an indoor side opening of the ventilation fan main body. An orifice frame that covers and guides air to the blades, and is formed in a lower end portion of the orifice frame and has a substantially box shape with an open upper surface, and an oil inlet is formed between the front wall and the front portion of the orifice frame. And a rear end of both sides of the orifice frame are brought into contact with the rear ends of the oil receiver to position the oil receiver in the front-rear direction so that the minimum size required for the function of the oil inlet is provided. The configuration of the ventilation fan is provided with a protruding portion to be secured.

[0009]

According to the present invention, the function of the oil inlet is achieved by locating the both sides of the rear end of the oil receiver by the protrusion provided on the rear end of the lower end of both sides of the orifice frame, which is not the oil flow path, by the constitution of the above means. The required minimum size is secured, and since there is no protrusion in the oil flow path from the oil inlet, the oil flow path of the orifice frame can be easily cleaned. Become.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to.

As shown in the drawing, an electric motor 7 having blades 6 fixed inside a box-shaped body frame 5 which is inserted and installed in an opening 2 provided in a chamber wall 1 and which is open on the indoor 3 side and the outdoor 4 side. A plurality of shutter plates 10 rotatably supported to open and close the ventilation fan main body 8 on the outdoor side 5 are provided. On the indoor side 3 side of the ventilation fan main body 8, an orifice frame 12 that covers the opening 11 on the indoor side 3 side of the ventilation fan main body 8 and guides air to the blades 6 is provided. A substantially box-shaped oil receiver 13 having an open upper surface is provided at the lower end of the orifice frame 12 so as to be detachable from the front of the orifice frame 12. By bringing both ends of the oil receiver 13 into contact with the projections 14 provided at the lower end rear portions of both side surfaces of the orifice frame 12, the front wall 15 of the oil receiver 13 is deformed inward by molding strain. However, in consideration of the amount of deformation, the oil inlet port 17 is provided in a width that secures the minimum dimension required for the function between the upper end portion of the front wall 15 and the inclined portion 16 provided on the lower front surface of the orifice frame 12. As it is formed, the oil receiver 13 is positioned in the front-rear direction.

In the above structure, when the electric motor 7 is energized and the blades 6 are rotated, the oil smoke generated during cooking is guided to the orifice frame 12, passes through the inside of the body frame 5 and is discharged to the outside 4, and The oil contained in the oil smoke is blown to the surroundings by the blades 6, and the inner peripheral surface 18 of the orifice frame 12 is
The oil adheres to the inner peripheral surface 18 and the inclined portion 16, flows downward, flows from the oil inlet 17 into the oil receiver 13, and is stored therein. At this time, the size of the oil inlet 17 is
Since it is always formed to have the minimum size required for its function, the oil does not drop downward along the front wall 15 of the oil receiver 13.

Since the projections 14 that secure the clearance between the oil inlets 17 are provided at the lower rear portions of both side surfaces of the orifice frame 12, they are oil passages, and the inclined portions 16 of the orifice frame 12 that are most easily polluted. Becomes flat, and when cleaning
The dirt on the inclined portion 16 of the orifice frame 12 can be easily removed.

[0014]

As is apparent from the above embodiments, according to the present invention, the rear ends of the oil receiver are brought into contact with the projections provided on the rear ends of the lower ends of both sides of the orifice frame which are not the oil passages. Positioning the oil receiver in the front-rear direction blocks the oil inlet and maintains the function of preventing oil from falling down along the outer wall of the oil receiver, improving the cleaning performance of the orifice frame. It is possible to provide a ventilation fan with an effective effect.

[Brief description of drawings]

FIG. 1 is a perspective view of a ventilation fan according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing the installation state of the ventilation fan.

FIG. 3 is a perspective view of a conventional ventilation fan.

FIG. 4 is a vertical cross-sectional view showing the installation state of the ventilation fan.

[Explanation of symbols]

 1 Chamber Wall 2 Opening 3 Indoor 4 Outdoor 5 Body Frame 6 Blades 7 Electric Motor 8 Ventilation Fan Body 10 Shutter Plate 12 Orifice Frame 13 Oil Receiver 14 Projection 15 Front Wall 17 Oil Inlet

Claims (1)

[Claims] 1. A ventilating fan main body having a box-shaped main body frame, which is inserted into an opening provided in a wall of a room and has an opening on the indoor side and the outdoor side, provided with an electric motor having blades fixed thereto, and the ventilating fan main body. A plurality of shutter plates rotatably supported to open and close the outdoor side opening, an orifice frame that covers the indoor side opening of the ventilation fan main body and guides air to the blades, and this orifice frame Is provided in the lower end of the orifice frame and has a substantially box-like shape with an open upper surface, and is provided with an oil receiver that forms an oil inlet between the front wall of the orifice frame and the front part of the orifice frame. A ventilation fan provided with a protrusion that abuts the rear ends of the oil receiver to position the oil receiver in the front-rear direction and secures the minimum size required for the function of the oil inlet.