JP2007032927A - Ventilating fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilating fan improved in cleaning property by ventilating with air supply action, induced by a jet nozzle, by a blower provided outside a duct. <P>SOLUTION: The ventilating fan has a fan 2 driven by a motor 1, and a body 4 provided with a suction port 3 for sucking air. The body 4 has the jet nozzle 5 and a guide 6 surrounding the jet nozzle inside. Air containing dust is sucked from the suction port 3 by an induction effect with a jet of the jet nozzle 5, and blow-off air from the fan 2 is jetted from the jet nozzle 5. Since the air containing dust does not contact the fan 2, dust does not stick to the fan 2 to improve cleaning property. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a ventilation fan used in a kitchen or the like.

  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, the main body 101 has a cylindrical duct 102, a fan 103, a suction port 104 and a discharge port 105 of the main body 101.

With the above configuration, when the fan 103 rotates, air flows in from the suction port 104 and exits to the discharge port 105. At this time, the fan 103 is dusty and difficult to clean, causing performance degradation and noise increase. Also become.
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 provides a ventilation fan with improved cleaning performance by ventilating by an air supply action attracted by a jet nozzle by a blower provided outside a duct. It is aimed.

  In order to achieve the above object, the ventilation fan of the present invention includes a fan driven by an electric motor, a suction port for sucking air, and a discharge port for discharging air, and the discharge from the suction port without passing through the fan. Air containing dust is exhausted to the outlet.

  According to the present invention, since air containing dust does not pass through the fan, dust is not attached to the fan, and a ventilation fan with improved cleaning performance is obtained.

  Another means includes a fan driven by an electric motor, a suction port for sucking air, a discharge port for discharging air, a jet nozzle for jetting air, and a guide surrounding the jet nozzle, The jet is jetted from the jet nozzle, and air is sucked from the suction port and exhausted to the discharge port due to the attracting effect of the jet flow of the jet nozzle.

  According to the present invention, since air containing dust does not pass through the fan, dust is not attached to the fan, and a ventilation fan with improved cleaning performance is obtained.

  Another means has a main body provided with a fan driven by an electric motor, a fan driven by an electric motor, and a suction port for sucking air, and a plurality of jet nozzles are installed in series, and a plurality of suction ports are also provided. The ventilating fan has one and has one discharge port.

  According to the present invention, air containing dust does not pass through the fan, so that dust does not adhere to the fan, improving the cleaning performance that is a problem and obtaining a high-pressure ventilation fan.

  Another means has a main body provided with a fan driven by an electric motor, a fan driven by the electric motor, and a suction port for sucking air, a plurality of jet nozzles are installed in series, and the suction port is 1 This is a ventilation fan having one piece and one discharge port.

  According to the present invention, air containing dust does not pass through the fan, so that dust does not adhere to the fan, improving the cleaning performance that is a problem and obtaining a high-pressure ventilation fan.

  Another means is a ventilation fan having a fan driven by an electric motor and a main body provided with a suction port for sucking air, a single jet nozzle, and a plurality of suction ports installed in parallel. .

  According to the present invention, since air containing dust does not pass through the fan, dust can be prevented from adhering to the fan, improving the cleaning performance that is a problem and obtaining a ventilation fan that exhausts air from a wide range.

  The other means is a ventilation fan provided with a duct having a jet nozzle inside and having a dust collection box installed at the lower part of the inner wall surface of the duct.

  According to the present invention, since air containing dust does not pass through the fan, dust is not attached to the fan, dust can be easily collected, and a ventilation fan with improved cleaning performance can be obtained.

  Another means is that the fan that blows air to the jet nozzle is a ventilation fan installed outdoors.

  According to the present invention, since air containing dust does not pass through the fan, dust is not attached to the fan, and a ventilation fan with improved cleanability and low indoor noise can be obtained.

  According to the present invention, since air containing dust does not pass through the fan, dust can be prevented from adhering to the fan, and it is possible to provide a ventilation fan with improved cleaning performance that is a problem.

  The present invention includes a fan driven by an electric motor, a suction port for sucking air, and a discharge port for discharging air, and exhausts air containing dust from the suction port to the discharge port without passing the fan. Since the fan is not in direct contact with air containing dust, the fan does not contain dust, and a ventilation fan with improved cleaning performance can be provided.

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

(Embodiment 1)
FIG. 1 is a cross-sectional view of a ventilation fan according to Embodiment 1 of the present invention.

  In FIG. 1, a fan 2 driven by an electric motor 1 and a main body 4 provided with a suction port 3 for sucking air and a duct 7 are provided. The main body 4 includes a jet nozzle 5 and a guide surrounding the jet nozzle 5 inside. 6, the air blown out from the fan 2 is jetted from the jet nozzle 5, and air containing dust is sucked in from the suction port 3 due to the attraction effect by the jet flow of the jet nozzle 5.

  With the above configuration, air containing dust is attracted from the suction port 3 into the main body 4 and the duct 7, but the fan 2 is installed outside the main body 4, and the air blown out from the fan 2 is discharged from the jet nozzle 5. Blow out. At this time, the air in the main body 4 and the duct 7 is sucked more strongly by the guide 6 attached so as to surround the jet nozzle 5.

  Thereby, air containing dust is exhausted from the discharge port 8 without contacting the fan 2, dust does not adhere to the fan 2, and 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.

  It has a main body 4 and a duct 7 provided with a fan 2 driven by an electric motor 1 and a suction port 3 for sucking air, a plurality of jet nozzles 5 and guides 6 are installed in series, and a plurality of suction ports 3 are also provided, The discharge port 8 is configured to have one. Since the jet nozzles 5 are installed in series, the pressure of the exhaust air becomes high according to the number of installed units, and can withstand the pressure loss of long duct pipes, indoor louvers, or outdoor hoods. In addition, since a plurality of suction ports 3 are also provided, suction and exhaust can be performed from a wide range.

  Thereby, it becomes possible to increase the pressure of the exhaust air containing dust, and the exhaust air containing dust does not pass through the fan 2, so that dust is not attached to the fan 2 and the cleaning performance that is a problem is improved. At the same time, a high-pressure ventilation fan exhausting from a wide area is obtained.

(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 fan 2 driven by an electric motor 1, a fan 2 driven by the electric motor 1, a main body 4 provided with a suction port 3 for sucking air, a duct 7, and a jet nozzle 5 A plurality of guides 6 are installed in series, and the ventilation fan has one suction port 3 and one discharge port 8.

  Since the jet nozzle 5 and the guide 6 are installed in series, the pressure of the exhaust air becomes high according to the number of installed units, and exhaust capable of withstanding the pressure loss of long duct pipes, indoor louvers, or outdoor hoods becomes possible.

  This makes it possible to increase the pressure of the exhaust air containing dust, and the exhaust air containing dust does not pass through the fan. The ventilation fan is obtained.

(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 fan 2 driven by an electric motor 1, a main body 4 provided with a suction port 3 for sucking air, and a duct 7 are provided, and a single jet nozzle 5 and a guide 6 are provided. In this configuration, a plurality of ports 3 are installed in parallel. Since there are a plurality of the suction ports 3, it can be sucked from a wide range.

  According to the present invention, since the exhaust air containing dust does not pass through the fan 2, dust is not attached to the fan, improving the cleaning performance that is a problem and obtaining a ventilation fan that exhausts air from a wide range.

(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 fan 2 driven by an electric motor 1, a main body 4 provided with a suction port 3 for sucking air, and a duct 7, and an inner wall surface of the duct 7 having a jet nozzle 5 and a guide 6 therein. The dust recovery box 10 is installed in the lower part of 9 so that dust can be easily recovered.

  According to the present invention, since air containing dust does not pass through the fan 2, no dust adheres to the fan 2, and it is easy to collect the dust, so that a ventilation fan with improved cleaning performance can be obtained.

(Embodiment 6)
FIG. 6 is a sectional view of the range hood according to the sixth embodiment 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, a fan 2 driven by an electric motor 1 and a main body 4 provided with a suction port 3 for sucking air and a duct 7 are provided. The main body 4 includes a jet nozzle 5 and a jet nozzle. The fan 6 which has the surrounding guide 6 and sucks air from the suction port 3 by the attraction effect and blows air to the jet nozzle 5 is installed outdoors.

  According to the present invention, since air containing dust does not pass through the fan 2, dust does not adhere to the fan 2, and the cleaning performance that is a problem is improved. A low ventilation fan can be obtained.

  In the range hood of the present invention, air containing dust does not pass through the fan, so that the dust fan does not adhere to the fan and can provide a ventilation fan with improved cleaning performance that is a problem.

Side sectional view of the ventilation fan according to the first embodiment of the present invention. Side sectional view of a ventilation fan according to the second embodiment of the present invention. Side sectional view of a ventilation fan according to Embodiment 3 of the present invention. Side sectional view of a ventilating fan according to Embodiment 4 of the present invention. Side sectional view of a ventilation fan according to the fifth embodiment of the present invention. Side sectional view of a ventilation fan according to Embodiment 6 of the present invention. Side cross-sectional view of a conventional ventilation fan

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric motor 2 Fan 3 Suction port 4 Main body 5 Jet nozzle 6 Guide 7 Duct 8 Discharge port 9 Inner wall surface 10 Dust collection box

Claims (7)

A fan driven by an electric motor, a suction port for sucking air, and a discharge port for discharging air are provided, and air containing dust is exhausted from the suction port to the discharge port without passing through the fan. Ventilation fan characterized by. A fan driven by an electric motor; a suction port that sucks air; a discharge port that discharges air; a jet nozzle that jets air; and a guide that surrounds the jet nozzle, and jets air blown from the fan from the jet nozzle. A ventilation fan that sucks air from the suction port and exhausts the air to the discharge port due to an attracting effect of the jet flow of the jet nozzle. The ventilation fan according to claim 1 or 2, further comprising a discharge port for blowing out air, a plurality of jet nozzles arranged in series, a plurality of suction ports, and one discharge port. The ventilation fan according to any one of claims 1 to 3, wherein a plurality of jet nozzles are installed in series, each having one suction port and one discharge port. The ventilation fan according to claim 1 or 2, wherein the number of jet nozzles is one, and a plurality of suction ports are installed in parallel. The ventilation fan according to any one of claims 1 to 5, further comprising a duct having a jet nozzle inside, and a dust collection box installed at a lower portion of an inner wall surface of the duct. The ventilation fan according to any one of claims 1 to 6, wherein a fan for blowing air to the jet nozzle is installed outdoors.

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