JP6405518B2 - Dust collector - Google Patents

Description

  The present invention relates to a cyclone type dust collector that removes dust in the air by centrifugation.

  The cyclone type dust collector sucks in air containing dust and causes a swirl flow to centrifuge the dust. The airflow descends while turning inside the apparatus, reverses at the lower part of the apparatus, and goes out of the apparatus through the flow path inside the apparatus.

  Hereinafter, an example of a conventional cyclone type dust collector will be described with reference to FIG.

  The dust collector 101 includes an outer cylinder 102, a suction port 103 connected in the tangential direction of the outer periphery thereof, a conical cylinder 104 connected below the outer cylinder 102, a dust collecting chamber 105 connected below the conical cylinder 104, and the outer cylinder 102. And an inner cylinder 106 connected to the upper surface thereof, and an exhaust port 107 communicating from the inner cylinder 106 to the outside of the dust collector. Air containing dust flows into the outer cylinder 102 from the air inlet 103 and descends while turning from the outer cylinder 102 to the conical cylinder 104. At that time, centrifugal force is applied to the dust in the air, and the dust is separated to the outer peripheral side of the dust collector and falls into the dust collecting chamber 105. The air from which the dust has been removed is sucked up from the lower end of the inner cylinder 106 and discharged from the exhaust port 107.

  There exists patent document 1 as what applied such a conventional cyclone type dust collector to the ventilation apparatus for kitchens.

JP 2005-127560 A

  The conventional cyclone type dust collector appropriately sets the size and flow rate of the device so that the dust in the airflow is efficiently centrifuged from the airflow. Therefore, for example, if it is used at a wind speed higher than an appropriate value, the pressure loss becomes high and a burden is imposed on the blower. On the other hand, when the wind speed is low, the pressure loss is small, but the centrifugal force received by the dust is small. Therefore, the dust is difficult to separate from the air flow, and a sufficient dust collection effect cannot be obtained. For this reason, there is a problem that the conventional cyclone method is difficult to apply as a dust collector capable of switching the air volume such as an air cleaner.

  Therefore, the present invention solves the above-described conventional problems, and an object of the present invention is to provide a dust collector that can maintain a high dust collection effect even if the air volume is changed.

And in order to achieve this object, the present invention has an air blowing means in the air blowing path containing the dust, swirling the air flow generated by the air blowing means, centrifugally separating the dust, A dust collecting device having a dust collecting chamber for collecting and collecting dust separated by the eddy current generating unit, the dust collecting device being installed upstream of the air blowing means, inlets and outlets, e Bei an outlet for discharging the separated dust to the dust collection chamber, the collection Chirishitsu is to form at least two spaces by a partition plate, each of the space between the vortex An opening / closing unit that opens and closes the outlet of the vortex generator unit for each unit by connecting the discharge port of the generator unit to each one of the spaces and the vortex generator unit communicating with the space as one unit. In addition, the opening / closing unit is controlled according to the air volume of the air blowing means so as to keep the velocity of the airflow passing through the vortex generating unit constant, thereby achieving the intended purpose. Is.

According to the present invention, there is an air blowing means in an air blowing path containing dust, an eddy current generating unit for rotating the air flow generated by the air blowing means to centrifuge the dust, and the dust separated by the eddy current generating unit. A dust collecting device having a dust collecting chamber for collecting and storing the dust collecting device , wherein the dust collecting device is installed upstream of the air blowing means, and the vortex generating unit has an air inlet and outlet and a separation unit. e Bei an outlet for discharging the the dust to the dust collecting chamber, said collecting Chirishitsu is to form at least two spaces by a partition plate, so each space and communicates the discharge port of the vortex flow generating unit Each of the spaces and the eddy current generation unit communicating with the space as a unit, and an opening / closing unit for opening and closing the outlet of the vortex flow generation unit for each unit. The opening / closing unit is controlled according to the air flow, and the air velocity passing through the eddy current generation unit is kept constant. In addition to maintaining the dust collection efficiency obtained as a result, and providing a partition plate in the dust collection chamber, the air flow entering from the unit inlet with the outlet closed to the unit air flow with the outlet closed It is possible to provide a dust collecting device having an effect of preventing the dust volume from being mixed in the dust collecting chamber and increasing the air volume, or winding up the collected dust and recontaminating the air flow.

The figure which shows arrangement | positioning of the dust collector of embodiment of this invention, a ventilation path, and a ventilation means Perspective view showing the eddy current generating unit and dust collection chamber Perspective view showing the eddy current generating unit and the opening / closing unit Cross section of the dust collector A perspective view showing the opening and closing means A perspective view showing a conventional cyclone type dust collector

The dust collecting apparatus according to claim 1 of the present invention has an air blowing means in an air blowing path of dust containing air, and an eddy current generating unit that centrifugally separates dust by turning an air flow generated by the air blowing means, A dust collecting device having a dust collecting chamber for collecting and collecting dust separated by the eddy current generating unit, wherein the dust collecting device is installed upstream of the air blowing means, and an air flow is supplied to the eddy current generating unit. e Bei an inlet and an outlet, an outlet for discharging the separated dust to the dust collection chamber, the collection Chirishitsu is to form at least two spaces by a partition plate, the vortex generator and respective spaces A discharge port of the unit is made to communicate, each one of the spaces and the vortex generating unit connected to the space as one unit, and an opening / closing unit that opens and closes the outlet of the vortex generating unit for each unit, By controlling the opening and closing of the closing unit in accordance with the magnitude of the air volume of air means, the velocity of air flow through the vortex flow generating unit has a configuration to keep constant.

  In an apparatus equipped with a blowing means and a dust collector, such as an air purifier, the air volume can be selected by the air volume switching means such as “strong”, “medium”, and “weak”. Since the cyclone type dust collector has an advantage that the pressure loss is lower than that of a filter system which is a general dust collecting means, it can be expected to save energy by suppressing the output of the air blowing means.

  However, in the cyclone type dust collector, the airflow passing through the inside of the device is swirled, so that the dust in the airflow receives centrifugal force and separates it from the airflow and collects it. To provide, the device is designed so that the airflow is at a certain wind speed.

  Therefore, when the air volume is changed, the wind speed of the air flow in the apparatus changes, and there is a possibility that a sufficient dust collection effect cannot be obtained when the air volume is small.

  The dust collector of the present invention includes two or more eddy current generating units, and thus has a configuration in which the air current is divided into a plurality of parts. By controlling the open / close unit according to the air flow size, the airflow is stopped by closing the outlets of some vortex generator units, and the airflow is concentrated only on the vortex generator units with open outlets. The speed is always kept constant.

  For example, assume a dust collector that can select three levels of air volume, “strong”, “medium”, and “weak”, and the ratio of each air volume is 3: 2: 1. The dust collector is equipped with three vortex generator units to divide the air flow into three parts, and when “strong” is selected as the maximum air volume, open the outlets of all vortex generator units and select “medium”. When this is done, an air flow is generated in the two vortex generating units by closing one outlet of the three vortex generating units with the opening / closing unit. When “weak”, which is the minimum air volume, is selected, airflow is generated in one vortex generating unit by closing two of the three outlets. As a result, even if the air volume changes, the velocities of the air currents in the vortex generating units are all equal, and a constant dust collection effect can be maintained at all times.

  The same effect can be obtained by a system in which six vortex generating units are provided for three stages of air volume setting and two outlets are opened and closed according to each air volume.

  The smaller the one eddy current generating unit, the higher the pressure loss of the air flow, but the higher the centrifugal force applied to the dust, the more fine dust can be collected. In that case, in order to ensure a constant air volume, a large number of eddy current generating units may be provided to configure the dust collector.

  In the dust collection chamber, at least two spaces are formed by a partition plate, and each space and the discharge port of the vortex generating unit are communicated with each other. A combination of one space formed thereby and one vortex generating unit is used as one unit, and an opening / closing unit that opens and closes the outlet is provided for each unit. For example, when six eddy current generating units are provided, the dust collection chamber is also divided into six spaces by partition plates to form six units.

  The reason for dividing the dust collection chamber will be described. When closing the outlet of the vortex generator unit according to the air volume, there is no airflow from the inlet of the vortex generator unit to the outlet, but there is an outlet for discharging dust to the dust collection chamber. If the dust collecting chamber is not divided into units and all the eddy current generating units share one dust collecting chamber, the air entering from the inlet of the vortex generating unit whose outlet is closed discharges dust. A path is formed that passes through the discharge port of the other vortex generation unit through the discharge port of the other eddy current generation unit that is in the dust collection chamber through the discharge port and is opened. In this case, the speed of the airflow in the vortex generating unit is lower than expected, and the expected dust collection effect cannot be obtained. It is also conceivable that the backflowing air winds up the dust accumulated in the dust collecting chamber and recontaminates the airflow. In order to prevent these problems, the dust collecting chamber is divided to form units.

  The position of the dust collecting device in the air passage is generally upstream of the air blowing means, which has the advantage of avoiding contamination of the air blowing means with dust. The position of the opening / closing means may be either the inlet or the outlet of the vortex generating unit. However, when the dust collector is upstream of the air blowing means, the opening / closing means is preferably on the outlet side. If an open / close unit is provided on the inlet side instead of the outlet side, no airflow will pass through the vortex generating unit when the inlet is closed, but the outlet of the vortex generating unit will open. Therefore, the dust accumulated in the space of the dust collecting chamber that constitutes the same unit as the vortex generating unit is wound up by the turbulence of the air flow that can occur in the space between the dust collecting device and the air blowing means. The reason is that dust may be discharged out of the dust collection chamber.

  Further, when the dust collector is disposed downstream of the air blowing means, the reverse is true. Since air is pushed from the inlet side of the vortex generating unit, it is necessary to provide an opening / closing unit on the inlet side. If an open / close unit is provided on the outlet side instead of the inlet side, when the outlet is closed, no airflow will pass through the vortex generator, but the inlet of the vortex generator will open. For this reason, there is a possibility that dust accumulated in the space of the dust collection chamber constituting the same unit as the vortex generating unit may be discharged from the inlet. Therefore, when the dust collector is disposed downstream of the air blowing means, it is better to provide an opening / closing unit on the inlet side.

  As described above, the position where the opening / closing unit is to be provided differs depending on whether the dust collecting device is arranged upstream or downstream of the air blowing means. In the present invention, the dust collecting device is the air blowing means. The opening / closing unit is provided on the outflow port side, assuming a general configuration arranged upstream.

  In order to collect finer dust, it has been described that a large number of eddy current generating units should be provided. In that case, two or more outlets can be connected simultaneously depending on the air flow. It is also assumed that it needs to be closed. For example, in a dust collector equipped with nine vortex generating units and three-stage airflow switching, it can be assumed that three or six outlets are simultaneously closed by an opening / closing unit. At this time, a total of six opening / closing units can be provided for each outlet, but if two opening / closing units capable of opening / closing three outlets at a time are provided, the drive system of the opening / closing unit It is reasonable to reduce the number of parts.

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

(Embodiment)
As shown in FIG. 1, a dust collector 1 is installed in the air passage 2, and a blower unit 3 is installed downstream of the dust collector 1, and an airflow is generated in the air passage 2 by the blower unit 3. Passes through the dust collector 1.

  As shown in FIGS. 2 and 3, the dust collector 1 includes a vortex generating unit 4 that swirls the passing air and centrifuges the dust, and a dust collection chamber 5 that collects and collects the separated dust. The The vortex generating unit 4 includes a cylindrical member 11, a swirl promoting plate 12, an inlet 6, an outlet 7, an outlet 8, and a hollow disk 13. More specifically, a spiral turning promotion plate 12 for turning the airflow is provided inside the cylindrical member 11. The cylindrical member 11 has an inlet 6 for taking in air at one end and an outlet 7 at the other end. A hollow disk 13 is provided, and a discharge port 8 for discharging dust to the dust collecting chamber 5 is provided on the side surface of the cylindrical member 11.

  In the dust collection chamber 5, at least two spaces are formed by the partition plate 9, and each space is connected to the discharge port 8 of the vortex generating unit 4, and each one of the spaces is connected to the eddy current generating unit. An opening / closing unit 10 that opens and closes the outlet 7 of the vortex generating unit 4 is provided for each unit.

  2, 3, and 4 illustrate a form in which two units are formed by partitioning the dust collection chamber 5 with one partition plate 9.

  FIG. 3 shows a state where the opening / closing unit 10 is opened in both units. If the rated air volume in this state is, for example, 200 m 3 / h, the air volume flowing through the vortex generating unit 4 in one unit is 100 m 3 / h.

  When the output of the air blowing means 3 is lowered and the total air volume is reduced to 100 m 3 / h, which is half of the rated value, the air volume of each vortex generating unit 4 is 50 m 3 / h, and the speed of the air current is halved. If the speed of the air flow decreases, the centrifugal force received by the dust in the air current also decreases, leading to a decrease in dust collection efficiency.

  Here, if the opening / closing unit 10 is closed in one of the two units, no airflow is generated in the vortex generating unit 4 in that unit.

  Referring to FIG. 4, when the left opening / closing unit 22 is closed and the left outlet 23 is closed in the left unit 21 of the left and right two units, the right unit 25 has the right side by the suction force of the blower 24. Air is introduced from the inflow port 26, and the air is turned into an air current as indicated by the arrow in the figure and swirls in the right vortex generating unit 27, and the dust in the air current receives centrifugal force to generate the right eddy current. Moving to the inner wall of the unit 27, the dust passes through the right outlet 28 and enters the dust collection chamber 29. The airflow swirling in the right vortex generating unit 27 passes through the right outlet 30 and travels to the blowing means 24.

  In the left unit 21, since the left opening / closing unit 22 blocks the left outlet 23, no airflow from the left outlet 23 toward the blower 24 is generated. Further, in the dust collection chamber 29, the partition plate 31 prevents the airflow from intermingling between the left and right units, so that air entering from the left inflow port 32 exits the left discharge port 33 and enters the dust collection chamber 29. There is no path that passes through the right outlet 28 and exits from the right outlet 30.

  Therefore, if the outlet 7 in one of the two units is closed by closing the opening / closing unit 10, an air flow is generated only in the vortex generating unit 4 of the other unit. When the overall air volume is reduced from 200 m3 / h to 100 m3 / h, if the opening / closing unit 10 of one unit is closed in conjunction with it, the wind speed of the airflow passing through the vortex generating unit 4 is maintained, and the dust collection efficiency is reduced. Is not invited.

  The air blowing means 3 is a fan for blowing air or the like. In FIG. 1, the air blowing means 3 is drawn separately from the dust collecting device 1 in the air blowing path 2, but the air flow is generated in the vortex generating unit 4 of the dust collecting device 1. Any device may be used as long as it generates water, and the dust collector 1 and the air blowing means 3 may be integrated.

  The outlet 7 of the vortex generating unit 4 has a configuration in which a hollow disk 13 is provided on the upper end surface of the cylindrical member 11 so that the diameter thereof is smaller than the diameter of the cylindrical member 11. The opening on the side serves as the outflow port 7.

  Dust in the airflow receives centrifugal force and is swung around the inner wall surface of the cylindrical member 11 and is discharged from the discharge port 8 to the dust collection chamber 29. However, some dust is externally discharged from the outflow port 7 by the airflow attracting force. To be washed away. At this time, as long as the upper end surface of the cylindrical member 11 is formed by the hollow disk 13 having an opening smaller than the diameter of the cylindrical member 11 as compared with the case where the entire upper end surface of the cylindrical member 11 is in an open state, dust is used. Does not flow out from the outlet 7 together with the airflow, but repeatedly swivels under the hollow disk 13 and increases the chance of being discharged from the outlet 8 to the dust collecting chamber 29, so that dust collection efficiency can be improved. .

  The shape of the outflow port 7 is determined by the shape of the hollow disk 13, but it is better that the shape is circular considering the pressure loss of the airflow. In addition, the smaller the diameter of the outlet 7, the better the dust collection efficiency, but at the same time the pressure loss increases, so the capacity of the blower means and the dimensions of the device for realizing the set air volume and the vortex generator unit The designer determines the optimum diameter according to design factors such as the set wind speed.

  The opening / closing unit 10 may have any shape as long as the outlet 7 can be completely sealed. For example, as shown in FIG. 5, a disc-shaped shielding plate 15 with a handle 14 protruding from a part of the circumference so that the shielding plate 15 can be opened and closed as a lid of the outlet 7 around the end of the handle 14. A combination with the hinge 16 is conceivable.

  The shape of the dust collection chamber 5 is drawn as a rectangular parallelepiped in the figure, but it may be cylindrical.

  The dust collector according to the present invention is useful as a dust collector or the like for separating and collecting dust, an air purifying device, or the like because the speed of the airflow can be kept constant even when the air volume is changed.

DESCRIPTION OF SYMBOLS 1 Dust collector 2 Air blowing path 3 Blowing means 4 Eddy current generation unit 5 Dust collection chamber 6 Inlet 7 Outlet 8 Outlet 9 Partition plate 10 Opening / closing unit 11 Cylindrical member 12 Turning promotion plate 13 Hollow disk 14 Handle 15 Shielding plate 16 Hinge 21 Left Unit 22 Left Open / Close Unit 23 Left Outlet 24 Blower 25 Right Unit 26 Right Inlet 27 Right Eddy Flow Generation Unit 28 Right Outlet 29 Dust Collection Chamber 30 Right Outlet 31 Partition Plate 32 Left inlet 33 Left outlet

Claims (1)

There is an air blowing means in an air blowing path containing dust, an eddy current generating unit for rotating the air flow generated by the air blowing means to centrifuge the dust, and collecting and storing the dust separated by the eddy current generating unit. A dust collecting device having a dust collecting chamber, wherein the dust collecting device is installed upstream of the air blowing means, and the vortex generating unit receives an air inlet / outlet and separated dust in the dust collecting unit. e Bei an outlet for discharging the chamber, the collection Chirishitsu is to form at least two spaces by a partition plate, each of the spaces between communicates the outlet of the vortex flow generating units, each of said space One unit of the eddy current generating unit communicating with the space and a unit of the eddy current generating unit, and an opening / closing unit for opening and closing the outlet of the eddy current generating unit for each unit are provided. By controlling the opening and closing of Tsu bets, dust collector, characterized in that to keep the rate of air flow through the swirl generating unit constant.

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