JP4200330B2 - Ventilation fan - Google Patents

Description

  The present invention relates to a ventilation fan used for a ventilation fan used for a ceiling or a wall surface.

  Conventionally, this type of ventilation fan has been used in homes and offices (see, for example, Patent Document 1).

  Hereinafter, this type of ventilation fan will be described with reference to FIG.

  As shown in the figure, a cylindrical duct 102 is installed on the suction side of the main body 101.

With the above configuration, when the impeller 103 rotates, air flows from the suction port 104 and exits to the discharge port 105. At this time, the impeller 103 is dusty and difficult to clean, resulting in performance degradation and noise increase. It can also be a cause.
JP-A-8-94146

  In such a conventional fan, there is a problem that dust adheres to the impeller and is difficult to clean, and also causes deterioration in performance and noise. Is required.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a ventilating fan that swirls intake air so that dust can be collected.

In order to achieve the above object , the ventilation fan of the present invention includes a main body , the main body includes a fan driven by an electric motor and a main body suction port of air sucked by the fan, and the suction from the main body suction port. A discharge port through which the air is discharged by the fan, a main body suction port, and a chamber and a partition plate provided between the fans, the partition plate partitioning the fan and the chamber, and the partition plate with the fan In the ventilation fan provided with the fan suction port, a cylindrical duct that communicates the fan and the chamber is provided in the fan suction port, and a cylindrical duct suction port that is a suction port of the cylindrical duct is provided in the cylindrical duct, and the main body suction port The suction air sucked into the cylindrical duct suction port is swirled to collect dust in the suction air, and the suction air is swirled. Comprising a fixed fins times, into the chamber, a plurality of air outlets provided, is obtained by the blown out by turning a portion of the discharge air from the fan.

  According to the present invention, it is possible to obtain a ventilating fan capable of collecting a large amount of dust before entering the fan by swirling the intake air, and improving the cleaning performance that is a problem.

  In order to achieve the above object, the other means includes a plurality of air outlets and an auxiliary fan for blowing air from the air outlet, and a part of the air blown from the auxiliary fan is a cylindrical duct. It is designed to turn to the suction port side and blow out.

  According to the present invention, it is possible to obtain a ventilating fan capable of collecting a large amount of dust before entering the fan by swirling the intake air, and improving the cleaning performance that is a problem.

  According to another means, in order to achieve the above object, the fan driven by the electric motor is installed outdoors.

  According to the present invention, a large amount of dust is collected before entering the fan, and the dust adheres in the pipe duct. A ventilation fan can be obtained.

  According to another means, in order to achieve the above object, the fan driven by the electric motor is installed outdoors, and the auxiliary fan is provided, and the auxiliary fan turns and blows air to the cylindrical duct inlet side. It is characterized by.

  According to the present invention, a large amount of dust is collected before entering the fan, and the dust adheres inside the duct, so that the large amount of dust disappears before the fan enters and the fan air volume can be reduced. Since there is no, the ventilation fan which can improve the cleaning property which is a subject is obtained.

  According to the present invention, by swirling the intake air, large dust is collected before entering the fan, only small dust enters the fan, dust is not attached to the fan, and the cleaning property is improved. A ventilation fan that can be provided can be provided.

  The present invention has a fan driven by an electric motor, a casing, a suction port having a cylindrical duct shape, a rectangular body outside the cylindrical duct-like suction duct, and swirling the suction air to make dust It is a ventilation fan that can be recovered.

  ADVANTAGE OF THE INVENTION According to this invention, the collection | recovery fan which enables collection | recovery of the dust used as a subject and can improve cleaning property can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
1 is a structural diagram of a ventilating fan according to a first embodiment of the present invention. FIG. 1 (a) is a cross-sectional side view, FIG. 1 (b) is a front view, and FIG. 1 (c) is a cross-sectional view of a swivel fixing fin. Indicates.

  As shown in FIG. 1 (a), FIG. 1 (b) and FIG. 1 (c), a main body 1 is provided, and a fan 3 driven by an electric motor 2 in the main body 1 and air suction sucked by the fan 3 The partition plate 7 includes a discharge port 5 through which the air sucked from the port 4 and the suction port 4 is discharged by the fan 3, a chamber 6 provided between the suction port 4 and the fan 3, and a partition plate 7. Divides the fan 3 and the chamber 6, the partition plate 7 includes a fan suction port 8 of the fan 3, and the fan suction port 8 includes a cylindrical duct 9 that communicates the fan 3 and the chamber 6. A cylindrical duct suction port 10 which is a suction port of the duct 9 is provided in the cylindrical duct 9, and the suction air sucked into the cylindrical duct suction port 10 from the suction port 4 is swirled to collect dust in the suction air. It has to. Further, a turning fixed fin 11 for turning the suction air is provided on the inner surface 12 of the chamber 6 for turning the suction air sucked into the suction port 4. The turning fixed fin 11 is parallel to the suction surface of the fan suction port 8 and has an inclination angle α with respect to the suction surface.

  In the above configuration, when the fan 3 is rotated by the electric motor 2, the fan suction port 8 becomes negative pressure, and air is sucked from the suction port 4. At this time, a plurality of swivel fixing fins 11 are installed in the suction port 4, and all of them are installed with an inclination angle α in the counterclockwise direction. It collides and rotates counterclockwise along the turning fixed fin 11 having the inclination angle α as viewed from the front in FIG. When this inclination angle turns in the opposite direction, it rotates clockwise. Due to this rotation, centrifugal force acts on the suction air, and large dust is blown to the inner surface 12 of the chamber 6 and does not go to the suction port 10 of the cylindrical duct 9, so that it does not pass through the fan 2.

  Thereby, since the suction air is swirled, dust having a large specific gravity collects on the inner surface 12 of the chamber 6, and only small dust can be sucked from the fan suction port 8, and only small dust enters the fan 3. Therefore, it is possible to pass through a narrow space between the blades, and it is discharged outdoors. For this reason, since the dust adhering to the fan 3 is only a small amount, the cleaning property is improved.

(Embodiment 2)
FIG. 2 is a cross-sectional view of a ventilation fan according to Embodiment 2 of the present invention.

The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 2, the fan suction port 8 is a cylindrical duct 9, the cylindrical duct 9 is provided in the main body 1, and a circle that does not allow air to pass in parallel with the cylindrical duct suction port 10 that is the suction port of the cylindrical duct 9. A plate 13 is provided, a suction space 14 is provided between the cylindrical duct suction port 10 and the disc 13, and a turning fixed fin 11 is provided around the disc 13. Since there is the disk 13 that does not allow air to pass therethrough, the suction air is surely swirled, and the effect of separating dust is greater than when there is no disk 13.

  In the above configuration, when the fan 3 is rotated by the electric motor 2, the fan suction port 8 becomes negative pressure, and air is sucked from the suction port 4. At this time, a plurality of swivel fixing fins 11 are installed in the suction port 4, and all of them are installed with an inclination angle α in the counterclockwise direction. It collides and rotates counterclockwise along the turning fixed fin 11 having the inclination angle α as viewed from the front in FIG. Further, since a disc 13 that does not allow air to pass is installed in the central portion of the suction port 4, the air from the suction port 4 is directly sucked into the cylindrical duct suction port 10 of the cylindrical duct 9 without being swirled. Since there is little and it can be made to turn reliably by the turning fixed fin 11, the big dust which passes the fan 2 decreases extremely. When this inclination angle turns in the opposite direction, it rotates clockwise. Due to this rotation, centrifugal force acts on the suction air, and large dust is blown to the inner surface 12 of the chamber 6 and does not go to the suction port 10 of the cylindrical duct 9, so that it does not pass through the fan 2.

  Thereby, since the suction air is swirled, dust having a large specific gravity collects on the inner surface 12 of the main body 1, and only small dust can be sucked from the cylindrical duct 9, and only small dust enters the fan 3. Therefore, it is possible to pass through a narrow space between the blades of the fan 3 and it is discharged outdoors. For this reason, since the dust adhering to the fan 3 is only a small amount, the cleaning property is improved.

(Embodiment 3)
FIG. 3 is a cross-sectional view of a ventilation fan according to Embodiment 3 of the present invention.

  The same parts as those in the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 3, a dust collection box 15 is installed below the inner surface 12 of the chamber 6 of the main body 1.

  Thereby, the suction air is swirled, and dust having a large specific gravity collects on the inner surface 12 of the chamber 7, collects in the dust recovery box 15, and can be collected together. For this reason, since the dust adhering to the fan 3 is only a small amount, the cleaning property is improved.

(Embodiment 4)
FIG. 4 is a cross-sectional view of a ventilation fan according to Embodiment 4 of the present invention.

  The same parts as those in any of Embodiments 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, a plurality of air outlets 16 are provided in the chamber 6 of the main body 1, and a part of the air of the fan 3 is swirled and blown out.

  Thereby, since the suction air is swirled, dust having a large specific gravity collects on the inner surface 12 of the chamber 6, and only small dust can be sucked from the fan suction port 8, and only small dust enters the fan 3. Therefore, it is possible to pass through a narrow space between the blades, and it is discharged outdoors. For this reason, only a small amount of dust adheres to the fan, which improves the cleaning performance.

(Embodiment 5)
FIG. 5 is a cross-sectional view of a ventilation fan according to Embodiment 5 of the present invention.

  The same parts as those in any of Embodiments 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, a plurality of air outlets 16 are provided in the chamber 6 of the main body 1, and a part of the air from the auxiliary fan 17 is swung toward the cylindrical duct 9 and blown out.

  Thereby, since the suction air is swirled, dust having a large specific gravity collects on the inner surface 12 of the chamber 6, and only small dust can be sucked from the fan suction port 8, and the dust adhering to the fan 3 is reduced. Can be cleaned, so the cleaning is better.

(Embodiment 6)
FIG. 6 is a cross-sectional view of a ventilation fan according to Embodiment 6 of the present invention.

  The same parts as those in any of Embodiments 1 to 5 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 6, the fan 3 driven by the electric motor 2 is installed outdoors.

  As a result, a large amount of dust is collected before it enters the fan 3 and the dust adheres in the pipe duct 18, so that the large amount of dust disappears before it enters the fan 3. The ventilation fan can be improved, the cleaning performance is improved, and the room noise is low.

(Embodiment 7)
FIG. 7 is a cross-sectional view of a ventilation fan according to Embodiment 7 of the present invention.

  The same parts as those in any of Embodiments 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, the fan 3 driven by the electric motor 2 is installed outdoors. As a result, a large amount of dust is collected before entering the fan 3 and the dust adheres in the pipe duct 18, so that the large amount of dust disappears before entering the fan 3. The sex can be improved. Moreover, since the electric motor 2 and the fan 3 are installed outdoors, the cleaning performance is improved, and the ventilation fan has low room noise.

  The ventilator of the present invention provides a ventilator having a good cleaning property by rotating the suction airflow to reduce dust adhering to the fan.

1 is a structural diagram of a ventilation fan according to a first embodiment of the present invention (a) a side sectional view of the ventilation fan according to a first embodiment of the present invention, (b) a front view thereof, and (c) a sectional view of a swivel fixing fin. Side sectional view of the ventilation fan of the second embodiment Side sectional view of the ventilation fan of the third embodiment Side sectional view of the ventilation fan of the fourth embodiment Side sectional view of the ventilation fan of the fifth embodiment Side sectional view of the ventilation fan of the sixth embodiment Side sectional view of the ventilation fan of the seventh embodiment Side cross-sectional view of a conventional ventilation fan

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Electric motor 3 Fan 4 Suction port 5 Discharge port 6 Chamber 7 Partition plate 8 Fan suction port 9 Cylindrical duct 10 Cylindrical duct suction port 11 Revolving fixed fin 12 Inner surface 13 Disc 14 Suction space 15 Dust collection box 16 Air outlet 17 Auxiliary fan 18 Piping duct 101 Main body 102 Cylindrical duct 103 Impeller 104 Suction port 105 Discharge port

Claims (4)

The main body includes a fan driven by an electric motor in the main body and a main body suction port for air sucked by the fan, and a discharge port for discharging air sucked from the main body suction port by the fan and the main body A fan provided with a chamber and a partition plate provided between the suction port and the fan, wherein the partition plate partitions the fan and the chamber, and the fan plate has a fan suction port of the fan in the partition plate. A cylindrical duct that communicates with the fan and the chamber, and a cylindrical duct suction port that is a suction port of the cylindrical duct is provided in the cylindrical duct, and the suction air sucked into the cylindrical duct suction port from the main body suction port is swirled. And collecting the dust in the suction air, equipped with a swivel fixed fin for swirling the suction air, in the chamber, Ventilator the outlet of the number provided, characterized in that the blown out by turning a portion of the discharge air from the fan. Into the chamber, an auxiliary fan for blowing air from a plurality of air outlet and the air outlet, claim was blown out by turning a part of the air blown from the auxiliary fan to the cylindrical duct inlet side 1 The described ventilation fan. The fan according to claim 2 , wherein the fan driven by the electric motor is installed outdoors. The ventilation fan according to claim 1 or 3 , wherein the fan driven by the electric motor is installed outdoors and includes an auxiliary fan, and air is swirled and blown toward the cylindrical duct suction port side by the auxiliary fan.

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