JP2008241100A - Ventilation equipment - Google Patents

Abstract

An object of the present invention is to provide a ventilation device capable of cleaning the entire blade root.
A sirocco fan-shaped ventilation is arranged in a ventilation device 1A so that a plurality of blades 2 do not overlap at the time of cleaning, and is connected to a plate 3 with gears so that the angles of the blades 2 can be varied simultaneously. The fan 4, the gear 5 that meshes with the gear of the plate 3 at the time of cleaning, the variable means 7 that includes the variable motor 6 that drives the gear 5, and the orifice 8A that reduces the wind noise when the ventilation fan 4 rotates. A DC motor 9 for rotating the ventilation fan 4, a static pressure detecting means 10 for detecting the rotational speed and applied voltage of the DC motor 9, a brush-shaped cleaning means 11 movable so as to contact the blades 2 during cleaning, Control is performed by a microcomputer 12A that controls the variable means 7, the driving of the DC motor 9, the signal detection of the static pressure detection means 10, and the operation of the cleaning means 11. Constituted by control means 13A, to clean the dust accumulated on the blade 2.
[Selection] Figure 1

Description

  The present invention relates to a ventilator that exhausts indoor air to the outside.

  Conventionally, this type of ventilator has been known to display the degree of contamination of the fan when the rotational speed of the fan due to dust adhering to the fan exceeds the set rotational speed, or one equipped with a movable fan cleaning device. (See, for example, Patent Documents 1 and 2).

  Hereinafter, a fluid feeder provided with a movable fan cleaning device will be described with reference to FIG.

As shown in FIG. 5, the fan cleaning unit 102 is installed in the fan casing 101, and the fan cleaning unit 102 comes into contact with the cross-flow fan 103 when receiving an instruction to start the cleaning operation. Thereafter, the cross-flow fan 103 rotates at a low speed, and the fan cleaning unit 102 is configured to remove dust accumulated in the cross-flow fan 103.
JP 2002-267249 A

  In such a fluid feeding device, the fan cleaning section is in contact with the cross-flow fan substantially in parallel, and there is a problem that the entire fan cannot be cleaned when the fan is in a semicircular fan shape.

  This invention solves the said subject, and it aims at providing the ventilation apparatus which can clean the whole fan and the whole blade | wing by making the blade | wing of a fan movable.

  In order to achieve the above object, the ventilator of the present invention can be cleaned with a DC motor, a static pressure detecting means for detecting the static pressure of the ventilation air passage, a cleaning means for cleaning dust or the like adhering to the blades, and the like. As described above, a blade varying means capable of varying the blade angle of the ventilation fan is provided.

  By this means, it is possible to obtain a ventilator that can change the dust and the like adhering to the blades to an angle that is easy to clean.

  Further, the other means is characterized in that the cleaning means is in contact with the blades during cleaning.

  By this means, a ventilation device is obtained that does not impose a load on the rotation of the fan without the cleaning means coming into contact with the blades at the normal blade position.

  Another means is that the cleaning means is a flexible brush.

  By this means, it is possible to obtain a ventilator that can remove dust and the like attached to the blades without damaging or damaging the blades.

  The other means is characterized in that the static pressure detecting means compares the motor rotation speed and the motor applied voltage when the ventilation device is initially installed.

  By this means, a ventilator capable of detecting the difference between the static pressure at the initial setting by the length of the exhaust duct connected to the ventilator and the static pressure when dust or the like is attached is obtained.

  Further, the other means is characterized in that the orifice can be attached and detached, and dust or the like adhering to the ventilation fan removed by the cleaning means is collected in the orifice.

  By this means, it is possible to obtain a ventilation device in which dust or the like does not scatter around when the dust or the like adhering to the blades is cleaned.

  Another means is characterized in that the cleaning means is an ejection nozzle that ejects liquid.

  By this means, it is possible to obtain a ventilator that can reliably remove dust and the like in a gap that cannot be removed by a brush.

  Further, the other means is characterized in that the angle of the liquid jetted from the jet nozzle is jetted to 90 degrees or less downward with respect to the blades.

  By this means, it is possible to obtain a ventilator that can prevent the liquid ejected from the ejection nozzle from scattering to the surroundings.

  Another means is that the liquid is ejected from the ejection nozzle and has an orifice shape provided with a liquid pool so that the liquid does not leak out of the ventilation device.

  By this means, it is possible to obtain a ventilator that prevents the liquid ejected from the ejection nozzle from scattering to the surroundings and can easily process the liquid ejected during cleaning.

  ADVANTAGE OF THE INVENTION According to this invention, the ventilation apparatus which can clean the whole fan and the whole blade | wing can be provided by making the blade | wing of a fan movable.

  In addition, it is possible to provide a ventilator that can be changed to an angle at which dust or the like adhering to the blades can be easily cleaned.

  Moreover, the ventilation apparatus which does not add the load to rotation of a fan can be provided, without the cleaning means contacting a blade | wing at the position of a normal blade | wing.

  Moreover, the ventilation apparatus which can remove reliably the dust adhering to a blade | wing can be provided.

  Moreover, the ventilation apparatus which can detect the difference of the static pressure at the time of initial setting by the exhaust duct length connected to the ventilation apparatus, and the static pressure when dust etc. adhere can be provided.

  In addition, it is possible to provide a ventilator that does not scatter dust or the like when dust or the like adhering to the blades is cleaned.

  Moreover, the ventilation apparatus which can remove reliably the dust etc. of the clearance gap which cannot be removed with a brush can be provided.

  Moreover, the ventilation apparatus which can prevent that the liquid injected from an injection nozzle scatters to the circumference | surroundings can be provided.

  In addition, it is possible to provide a ventilator that can prevent the liquid ejected from the ejection nozzle from scattering to the surroundings and can easily process the liquid ejected during cleaning.

  According to the first aspect of the present invention, there is provided a DC motor, a static pressure detecting means for detecting the static pressure of the ventilation air passage, a cleaning means for cleaning dust and the like adhering to the blades, and a ventilation means for cleaning. The fan is provided with blade changing means capable of changing the blade angle of the fan, and has an effect that dust or the like adhering to the blade can be changed to an angle that is easy to clean.

  The invention according to claim 2 is characterized in that the cleaning means is in contact with the blades during cleaning, and the load on the rotation of the fan without the cleaning means being in contact with the blades at the normal blade position. Has the effect of not adding.

  Further, the invention according to claim 3 is characterized in that the cleaning means is a flexible brush, and is capable of removing dust attached to the blade without damaging or damaging the blade. Have

  In the invention according to claim 4, the static pressure detecting means compares the motor rotation speed and the motor applied voltage at the time of initial installation of the ventilator, and depends on the length of the exhaust duct connected to the ventilator. It has the effect that the difference between the static pressure at the initial setting and the static pressure when dust or the like adheres can be detected.

  Further, the invention according to claim 5 is characterized in that the orifice can be attached and detached, and dust attached to the ventilation fan removed by the cleaning means is collected in the orifice. If dust or the like does not scatter around when it is cleaned, it has a savory effect.

  Further, the invention according to claim 6 is characterized in that the cleaning means is an injection nozzle for injecting liquid, and has an effect of reliably removing dust in a gap that cannot be removed by a brush. .

  According to the seventh aspect of the present invention, the angle at which the liquid is ejected from the ejection nozzle to the ventilation fan is 90 degrees or less downward with respect to the blades. It has the effect | action that it can prevent that the liquid to be scattered to the circumference.

  The invention according to claim 8 is an orifice shape in which a liquid pool portion is provided so that the liquid ejected from the ejection nozzle does not leak outside the ventilator, and is ejected from the ejection nozzle. The liquid is prevented from being scattered to the surroundings, and the liquid ejected during cleaning can be easily processed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 2, a plurality of blades 2 are arranged in the ventilation device 1 so as not to overlap each other during cleaning, and are connected to a plate 3 with gears so that the angles of the blades 2 can be changed simultaneously. The sirocco fan-shaped ventilation fan 4, the gear 5 that meshes with the gear of the plate 3 at the time of cleaning, the variable means 7 having the variable motor 6 that drives the gear 5, and the wind noise when the ventilation fan 4 rotates. An orifice 8A, a DC motor 9 for rotating the ventilation fan 4, a static pressure detecting means 10 for detecting the rotation speed and applied voltage of the DC motor 9, and a brush-shaped cleaning movable so as to contact the blade 2 during cleaning Control by means 11 and microcomputer 12A for controlling variable means 7, driving of DC motor 9, signal detection of static pressure detecting means 10, and operation of cleaning means 11 It consists of the control unit 13A to be.

  The plurality of blades 2 are connected to the plate 3 on which the gears are engraved. However, as long as the plurality of blades 2 can be varied at the same time, the plates need not be plates.

  The static pressure detection means 10 may be configured in the control means 13A that controls the driving of the DC motor 9.

  The cleaning means 11 may be in the form of a brush. For example, the material of the brush may be any material as long as it is made of animal hair or nylon and does not damage or damage the blades 2.

  With the above configuration, the rotational speed and applied voltage of the DC motor 9 are detected by the static pressure detecting means 10 in the initial operation at the time of installation, and the rotational speed information and applied voltage information are stored in the control means 13A or the microcomputer 12A. Remember. When the ventilation operation is performed so as to exhaust the indoor air, the dust and the like in the room adhere to and accumulate on the blades 2 of the ventilation fan 4 over time. When the ventilation air passage approaches a closed state due to dust or the like adhering to the blade 2, the rotational speed of the ventilation fan 4 detected by the static pressure detection means 10 and the voltage applied to the DC motor 9 are variable from the initial operation. I will do it.

  When a difference from the initial operation stored in advance in the control means 13A or the microcomputer 12A occurs, it is determined that dust or the like is accumulated on the blades 2 of the ventilation fan 4 and the ventilation capacity is reduced. Then, the operation proceeds to the cleaning operation of the blade 2. In the cleaning operation of the blade 2, first, the ventilation operation is stopped by the control means 13A or the microcomputer 12A so that the gear 5 connected to the variable motor 6 of the variable means 7 contacts the gear of the plate 3 connected to the blade 2. Next, the position of the variable means 7 is moved. And the angle of the blade | wing 2 is varied by driving the variable motor 6, and the angle of the blade | wing 2 is varied to the angle at the time of cleaning. When the variable angle is completed, the variable means 7 is moved to a position where the gear 5 and the plate 3 do not contact each other.

  Subsequently, the cleaning means 11 is moved so as to be in contact with the blade 2 and is in contact with the blade 2. Then, the DC motor 9 is rotated at a low speed and the ventilation fan 4 is rotated in order to carry out a cleaning operation for a preset time in order to scrape off dust adhering to the blades 2. When the cleaning operation is completed, the variable means 7 is moved again so that the gear 5 and the gear of the plate 3 are in contact with each other, the blade 2 is changed to the angle of the blade 2 before the cleaning operation, and when the variable is completed, the gear 5 and the plate Move to a position where 3 does not touch. Dust and the like scraped off accumulate on the orifice 8A, and after the cleaning operation is finished, the orifice 8A is removed and discarded. By carrying out like this, the ventilation operation which ensured the stable ventilation capability can be performed, without the ventilation capability falling remarkably.

  In the present embodiment, the static pressure detection means 10 is performed by the rotational speed of the DC motor 9 and the applied voltage. However, the same effect can be obtained if the static pressure can be detected by the actual wind pressure or the wind speed.

  Further, although the vane 2 is varied using the variable motor 6, the same effect can be obtained even if the vane 2 is varied by a method other than the variable motor 6 if the vane 2 can be varied.

  Moreover, although the cleaning means 11 is outside the ventilation fan 4 and the blade 2 is cleaned by changing the blade angle outside the ventilation fan 4, the cleaning means 11 is arranged inside the ventilation fan 4 so that the angle of the blade 2 is ventilated. Even if the blades 2 can be varied so as to face the inside of the fan 4, the same effect can be obtained if the blades 2 can be cleaned.

(Embodiment 2)
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 FIGS. 3 to 4, the spray nozzle 14 is arranged so that the angle A portion of the liquid sprayed onto the blades 2 of the ventilation fan 4 is 90 degrees or less, and the liquid sprayed from the spray nozzle 14 as a cleaning means. Control means 15 for performing storage and injection control, control means 13B controlled by a microcomputer 12B for controlling the injection control means 15, DC motor 9, variable means 7, and static pressure detection means 10, and during cleaning It is composed of a removable orifice 8B provided with a liquid pool so that the liquid sprayed from the spray nozzle 14 and cleaned of the blades 2 of the ventilation fan 4 does not diffuse outside from the ventilation device 1B.

  With the above configuration, when dust or the like accumulates on the blade 2 and the ventilation sealed path approaches a closed state as in the first embodiment, the static pressure value detected by the static pressure detection means 10 is controlled by the control means 13B or When the value stored in advance in the microcomputer 12B is reached, the ventilation operation is stopped, the operation is shifted to the cleaning operation of the blade 2, and the blade 2 of the ventilation fan 4 is moved by the variable means 7 in order to change the blade 2 of the ventilation fan 4 to the cleaning angle. Variable. When the DC motor 9 starts to rotate at a low speed in order to carry out the cleaning operation, the liquid is ejected from the ejection nozzle 14 toward the blade 2 by the ejection control means 15, and the blade 2 is cleaned. When the cleaning of the blade 2 is completed, the blade 2 is changed to the angle during the ventilation operation by the variable means 7.

  Further, the liquid that has cleaned the blades 2 gathers in the liquid pool of the orifice 8B without being scattered around, and therefore, dust or the like adhering to the ventilation fan 4 is collected in the orifice 8B, and the orifice 8B that collects dust or the like is collected. By removing, the liquid which cleaned the blade | wing 2 can be discharged | emitted.

  By doing so, there is no scattering of liquid during cleaning, and dust and the like accumulated in the fine gaps of the blades 2 of the ventilation fan 4 can be cleaned.

  A bathroom heater / dryer with a built-in ventilation device or a fan installed in a place where dust or the like is likely to accumulate on the fan blades, such as a fan installed in a tunnel.

The block diagram which shows the structure of the ventilation apparatus of Embodiment 1 of this invention Configuration diagram showing the configuration of the ventilation device The block diagram which shows the structure of the ventilation apparatus of Embodiment 2 of this invention. Configuration diagram showing the configuration of the ventilation device Configuration diagram showing the configuration of a conventional ventilation device

Explanation of symbols

1A Ventilator 1B Ventilator 2 Blade 3 Plate 4 Ventilation Fan 5 Gear 6 Variable Motor 7 Variable Means 8A Orifice 8B Orifice 9 DC Motor 10 Static Pressure Detection Means 11 Cleaning Means 12A Microcomputer 12B Microcomputer 13A Control Means 13B Control Means 14 Injection Nozzle 15 injection control means

Claims (8)

DC motor, static pressure detecting means for detecting the static pressure of the ventilation air passage, cleaning means for cleaning dust and the like adhering to the blade, and blade changing means capable of changing the blade angle of the ventilation fan so that it can be cleaned Ventilation device with. The ventilation apparatus according to claim 1, wherein the cleaning means is in contact with the blades during cleaning. The ventilation apparatus according to claim 1, wherein the cleaning means is a flexible brush. The ventilator according to claim 1, wherein the static pressure detecting means compares the motor rotational speed and the motor applied voltage when the ventilator is initially installed. The ventilation apparatus according to claim 1, wherein the orifice is detachable and dust or the like adhering to the ventilation fan removed by the cleaning means is collected in the orifice. The ventilation device according to claim 1, wherein the cleaning means is an injection nozzle for injecting liquid. The ventilating apparatus according to claim 6, wherein an angle of the liquid sprayed from the spray nozzle is sprayed to the ventilation fan by 90 degrees or less downward with respect to the blade. The ventilator according to claim 8, wherein the ventilator has a shape of an orifice provided with a liquid pool portion so that the liquid ejected from the ejection nozzle does not leak out of the ventilator.

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