JP2004097942A - Cyclone dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cyclone dust collector with a simple structure capable of maintaining a capturing performance of dust even in the case where an amount of air sucked is varied. <P>SOLUTION: A connection pipe for connecting a suction pipe and an exhaust pipe is provided and a movement body supported by a spring is disposed in the connection pipe. Since the movement body is moved by a pressure difference between the suction pipe and the exhaust pipe to change an opening area of the suction port of the suction pipe, flow-in speed at the suction port is automatically maintained to the optimum. A garbage jamming detection means is provided at the suction port and the movement body is moved based on the detection signal of the detection means so as to make the opening area to the maximum. Further, the movement body is moved so as to close the suction port when operation is stopped. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cyclone dust collecting apparatus, and more particularly to a cyclone dust collecting apparatus suitable for a vacuum cleaner.
[0002]
[Prior art]
BACKGROUND ART A cyclone dust collector is a device that turns air mixed with dust (hereinafter, referred to as an air-fuel mixture) in a cylinder and separates dust and air using a specific gravity difference, and is used in various fields. ing. For example, for home use, it is mainly installed in a vacuum cleaner.
Further, it has been found that the cyclone dust collecting apparatus can obtain a sufficient collecting performance by setting the inflow air velocity of the air-fuel mixture at the intake port in a range of 15 to 25 m / s.
[0003]
FIG. 10 is a schematic view showing an example of a conventional vacuum cleaner. In FIG. 10, the air-fuel mixture is sucked from a suction port body 102 having a suction port 101 facing a floor surface F, and is installed in a cleaner main body 104 via a connection pipe 103 connected to the suction block 101. It flows into the intake pipe 1 of the cyclone dust collector.
[0004]
Then, the air-fuel mixture flows into the cyclone chamber 2 from an intake port 3 provided so as to be in contact with the inner wall of the cylindrical cyclone chamber 2 and swirls in the cyclone chamber 2.
Therefore, the dust having a large specific gravity mixed into the air-fuel mixture is blown toward the wall surface by centrifugal force, and falls and accumulates in the dust collection chamber 4 at the bottom of the cyclone chamber 2.
On the other hand, air containing no dust flows into the exhaust pipe 6 through the exhaust port 5 provided at the center of the cyclone chamber 2, and is discharged from the cleaner main body 104 to the outside by the blower motor 105.
[0005]
In the middle of the connection pipe 103 of the vacuum cleaner, there is provided a hand switch 106 composed of a power ON / OFF switch and a power switch for adjusting the strength of the supplied power.
Thus, when cleaning persistent dirt on a carpet or the like, a strong suction force is generated by increasing the number of rotations of the motor by increasing the energizing power. On the other hand, in the case of nighttime when the sound is worrisome or when cleaning the mat, the number of revolutions of the motor is reduced by weakening the power supply to reduce the noise value and eliminate sticking to the mat. Thus, the vacuum cleaner is used by changing the air volume.
[0006]
However, when the amount of air flowing into the cyclone dust collecting device is reduced, the inflow wind speed at the intake port 3 becomes slow, dust is difficult to separate, and the collecting performance of the cyclone dust collecting device is reduced. On the other hand, when the amount of air flowing into the cyclone dust collector is increased, the inflow wind speed at the intake port 3 is increased, dust is easily separated, and the collection performance of the cyclone dust collector is increased, but the pressure loss is excessive. Get higher. For this reason, the following techniques have been proposed.
[0007]
FIG. 11 is a plan sectional view showing a conventional variable inlet flow path type separator. In FIG. 11, a slide gate 210 for adjusting an inflow area is provided in an inflow passage 202 of a cyclone body 201. That is, when the flow rate is large, the slide gate 210 is opened, and as the flow rate becomes small, the slide gate 210 is closed to keep the inflow speed substantially constant. Therefore, the separation performance is sufficiently exhibited from a large flow rate to a small flow rate (for example, see Patent Document 1).
[0008]
FIG. 12 is a schematic view of a conventional cyclone device. In FIG. 12, a movable blade 310 is provided at an inlet 307 of the cyclone 301 so as to be freely opened around the axis of the support shaft 311. A drive arm 312 is fixed to the support shaft 311, a cylinder device 313 (for driving the movable blade 310) is connected to the drive arm 312, and a PID control device 314 for controlling the drive is connected to the cylinder device 313. It is connected.
A differential pressure gauge 315 for measuring a pressure difference (corresponding to the pressure loss of the cyclone device) between the inflow gas pressure at the inlet 307 and the outflow gas pressure at the outlet 309 is provided, and the measured value is input to the PID controller 314. Is done.
Therefore, the fact that the measured value is below (above) the set value indicates that the inflow of the inflow gas 306 has decreased (increased) and the gas flow rate at the inlet 307 has decreased (increased). , The PID control device 314 operates the cylinder device 313 according to the measured value to close (open) the movable vane plate 310.
That is, the flow path width at the inlet portion 307 is narrowed (widened) to increase (drop) the pressure loss with respect to the inflow gas 306 to a set value, and the flow rate of the inflow gas 306 at the inlet portion 307 is recovered to stabilize the dust collection rate. (For example, see Patent Document 2).
[0009]
[Patent Document 1]
Japanese Utility Model Application Laid-Open No. 61-187259 (page 3-4, FIG. 1)
[Patent Document 2]
JP-A-11-90274 (page 2-3, FIG. 1)
[0010]
[Problems to be solved by the invention]
However, any of the above prior arts
(1) a differential pressure gauge for measuring a pressure difference between an inflow gas pressure and an outflow gas pressure,
(2) driving means for driving a slide gate or a movable vane plate for changing a flow path width;
(3) A control means for controlling the driving means based on the measurement value of the differential pressure gauge is required.
[0011]
Therefore, there were the following problems.
(I) The number of components constituting the cyclone dust collector increases, the mechanism becomes complicated, and the cyclone dust collector itself becomes large and heavy.
(Ii) In addition, the manufacturing cost of the cyclone dust collecting device increases.
(Iii) In particular, when the vacuum cleaner is installed in a vacuum cleaner, the degree of freedom of the external design of the vacuum cleaner is impaired.
(Iv) Further, when large dust is sucked in a small flow rate state and the large dust is caught in the gap between the slide gate or the movable vane and the inner surface of the inflow passage, it is difficult to remove the dust.
(V) When the cyclone dust collector is used in a horizontal position, the separated and collected dust enters the inlet channel from the entrance.
[0012]
The present invention has been made to solve such a problem, and a simple structure can maintain dust collection performance (recovery performance) even when the amount of air to be suctioned changes. The purpose is to obtain a cyclone dust collector.
[0013]
[Means for Solving the Problems]
The cyclone dust collecting apparatus according to the present invention is as follows.
(1) The invention according to claim 1 is a cyclone chamber that separates dust and air by swirling intake air made of air mixed with dust,
An intake pipe installed at an intake port of the cyclone chamber to suck the intake air;
An exhaust pipe that is installed at an exhaust port of the cyclone chamber and discharges exhaust air that is air separated from dust;
A connection pipe connecting the intake pipe and the exhaust pipe,
A moving body that is disposed inside the connecting pipe and moves by a pressure difference between an intake pressure in the intake pipe and an exhaust pressure in the exhaust pipe, and that changes an opening area of the intake port. It is assumed that.
[0014]
(2) In the invention according to claim 2, in the invention according to claim 1, an elastic body is installed or abutted on the moving body, and the moving body is pushed or pulled in a direction in which the opening area is reduced by the elastic body. It is characterized by being done.
[0015]
(3) The invention according to claim 3 is the invention according to claim 2, wherein a relationship between the pressure difference and an inflow speed of the intake air at the intake port;
A relationship between the inflow speed of the intake air at the intake port and the opening area,
An elastic coefficient of the elastic body is set based on a relationship between the opening area and a moving distance of the moving body.
[0016]
(4) The invention according to a fourth aspect is the invention according to any one of the first to third aspects, wherein an inflow speed of the intake air at the intake port is controlled to 15 to 25 m / s. It is.
[0017]
(5) The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the moving body is capable of closing the intake port.
[0018]
(6) In the invention according to claim 6, in the invention according to claim 5, an actuator is installed or abutted on the moving body, and the actuator moves the moving body to close the intake port. It is assumed that.
[0019]
(7) The invention according to claim 7 is the invention according to claim 6, wherein dust clogging detection means for detecting dust clogging in a gap between the moving body and the intake port;
An actuator for moving the moving body,
The actuator is configured to move the movable body based on a dust clog signal from the dust clog detection means so as to maximize the opening area.
(8) The invention according to claim 8 is characterized in that the dust clogging detection means in the invention according to claim 7 has a flow sensor for measuring a flow rate of exhaust gas flowing through the exhaust pipe.
[0020]
(9) In a ninth aspect of the present invention, in the invention according to the seventh aspect, the dust clogging detection unit detects a load sensor for detecting a force acting on the moving body, and a moving speed or a moving acceleration of the moving body. It has either a speed sensor for detecting or a material confirmation sensor for directly detecting dust clogged in a gap between the moving body and the intake port.
[0021]
(10) According to a tenth aspect of the present invention, in the invention according to the seventh aspect, the dust clogging detection unit is configured to detect the pressure of the intake pressure in the intake pipe and the exhaust pressure in the exhaust pipe. It has a pressure sensor for measuring the difference.
[0022]
(11) a cyclone chamber that separates dust and air by swirling intake air made of air mixed with dust;
An intake pipe installed at an intake port of the cyclone chamber to suck the intake air;
An exhaust pipe that is installed at an exhaust port of the cyclone chamber and discharges exhaust air that is air separated from dust;
A movable body capable of changing the opening area of the intake port,
An actuator for moving the moving body,
Dust clogging detection means for detecting dust clogging in a gap between the moving body and the intake port,
The actuator is configured to move the movable body based on a dust clog signal from the dust clog detection means so as to maximize the opening area.
[0023]
(12) According to a twelfth aspect of the present invention, in the invention according to the eleventh aspect, the dust clogging detecting means has a flow sensor for measuring a flow rate of exhaust gas flowing through the exhaust pipe.
[0024]
(13) According to a thirteenth aspect of the present invention, in the invention according to the eleventh aspect, the dust clogging detecting unit detects a load sensor for detecting a force acting on the moving body, and a moving speed or a moving acceleration of the moving body. It has either a speed sensor for detecting or a material confirmation sensor for directly detecting dust clogged in a gap between the moving body and the intake port.
[0025]
(14) The invention according to claim 14 is the invention according to claim 11, wherein the dust clogging detection means is configured to measure a pressure difference between a pressure of intake air in the intake pipe and a pressure of exhaust gas in the exhaust pipe. It is characterized by having.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
[Embodiment 1]
FIG. 1 is a cross-sectional view of the cyclone dust collecting apparatus according to Embodiment 1 of the present invention. The air mixed with dust (hereinafter referred to as “suction”) flowing from the suction pipe 1 flows into the cyclone chamber 2 from the suction port 3 provided so as to be in contact with the cylindrical cyclone chamber 2, and turns inside the cyclone chamber 2. I do.
Here, dust having a large specific gravity (granular, massive, etc.) is blown to the wall surface side of the cyclone chamber 2 by centrifugal force and separated from air. The separated dust falls and accumulates in the dust collecting chamber 4 at the bottom of the cyclone chamber 2. On the other hand, the air after the dust is separated (hereinafter referred to as exhaust) flows into the exhaust pipe 6 through the exhaust port 5 provided at the center of the cyclone chamber 2.
[0027]
Further, a connecting pipe 16 for connecting the intake pipe 1 and the exhaust pipe 6 is provided, and the moving body 7 is disposed in the connecting pipe 16.
The moving body 7 is urged by a spring 8 in a direction protruding toward the intake pipe 1, and the opening area S3 of the intake port 3 varies depending on the amount of projection. Note that the spring 8 may be a compression spring (using a repulsive force) that pushes out the moving body 7 or a tension spring (using a contracting force) that pulls the moving body 7. Further, the spring 8 is not limited to a coil spring, but may be a leaf spring. Further, an elastic block such as a urethane resin which exerts the above-mentioned action may be used.
[0028]
FIG. 2 is a partial cross-sectional view illustrating a force acting on the moving body in FIG. The same parts as those in FIG. 1 are denoted by the same reference numerals, and a part of the description will be omitted. In FIG. 2, since the moving body 7 is disposed in the connecting pipe 16 in an airtight and slidable manner, the moving body 7 has an exhaust pressure P6 (hereinafter referred to as an exhaust pressure P6) in the exhaust pipe 6 and an intake pipe. 1, the intake pressure P1 (hereinafter, referred to as the intake pressure P1) acts in directions facing each other.
That is, the pressure difference P16 (P16 = P1-P6; hereinafter, referred to as differential pressure P16) acts on the moving body 7. Here, since the differential pressure P16 is equal to the pressure difference between the front and rear of the cyclone dust collector, it can be considered as the pressure loss of the cyclone dust collector.
[0029]
Further, the moving body 7 is pushed into the intake pipe 1 by the spring 8 in the direction in which the intake roller 3 closes (the same as the direction in which the opening area S3 decreases). , A spring force F8) is acting.
That is, when the airflow W1 of the intake air flowing into the cyclone dust collecting device is constant, the force F7 acting on the moving body 7 is balanced with the spring force F8, so that the area receiving the pressure of the moving body 7 is S7 (discharged area). If the area receiving the atmospheric pressure P6 is equal to the area receiving the intake pressure P1, the following relational expression is established.
F8 = F7 = P16 × S7 (1)
On the other hand, the differential pressure P16 is expressed as a function of the airflow W1 of the intake air (P16 increases with the increase of W1), and the inflow velocity V3 of the intake air at the intake port 3 (hereinafter referred to as the intake air velocity V3) is the airflow. Since the function is represented by W1 and the opening area S3 (V3 increases with an increase in W1 and decreases with an increase in S3), the following relational expression holds.
P16 = f (W1) (2)
V3 = g (W1, S3) (3)
The opening area S3 is expressed as a function by the movement amount δ7 of the moving body 7 (same as the compression amount δ8 of the spring 8) (S3 decreases as δ7 increases, for example, proportionally when the opening area is rectangular). Therefore, the following relational expression holds.
S3 = h (δ7) = h (δ8) (4)
As described above, since the opening area S3 for guaranteeing the predetermined intake air velocity V3 with respect to the intake air flow W1 is obtained, the compression amount δ8 of the spring 8 is determined.
On the other hand, since the differential pressure P16 is determined from the air flow W1, the spring coefficient K is calculated by the following equation.
F8 = K × δ8 (5)
Therefore, the spring coefficient K is selected such that the intake port speed V3 is in the range of 15 m / s to 25 m / s. As a result, even if the air flow W1 changes, the moving body 7 automatically moves, so that the intake port wind speed V3 is always maintained at an optimum value.
[0030]
For example, when the air volume of the intake air increases to W1 + ΔW1, the differential pressure P16 increases to greatly compress the spring 8 (the spring force increases to F8 + ΔF8) and the opening area increases to S3 + ΔS3, so that V3 = g (W1 + ΔW1, S3 + ΔS3), it is possible to keep the intake port wind speed V3 at a substantially constant value (this is the same as suppressing it so as not to further increase).
Therefore, since the excessive swirling wind speed in the cyclone chamber 2 can be suppressed, the increase in the pressure loss of the cyclone dust collecting device can be reduced.
FIG. 3 is a correlation diagram showing the relationship between the air volume and the pressure loss of the cyclone dust collecting apparatus according to Embodiment 1 of the present invention. In FIG. 3, in the first embodiment indicated by black circles, the pressure loss gradually increases with an increase in the air volume. On the other hand, in the case where the moving object indicated by the black triangle is not provided, the pressure loss sharply increases.
[0031]
On the other hand, when the air volume of the intake air decreases to W1−ΔW1, the differential pressure P16 decreases and the spring 8 expands (the spring force decreases to F8−ΔF8), and the opening area decreases to S3−ΔS3. = G (W1−ΔW1, S3−ΔS3) makes it possible to keep the intake air velocity V3 of the intake air at a substantially constant value (same as suppressing it so as not to further decrease).
That is, since the reduction of the inlet wind speed V3 is automatically prevented, the turning force in the cyclone chamber 2 can be maintained. Therefore, dust can be sufficiently separated even if the air volume is small, and the collection performance of the cyclone dust collecting apparatus can be maintained high.
FIG. 4 is a correlation diagram showing the relationship between the air volume and the inlet wind speed of the cyclone dust collecting apparatus according to Embodiment 1 of the present invention. In FIG. 4, in the first embodiment indicated by black circles, the intake port wind speed is a constant value regardless of the increase or decrease of the air volume. On the other hand, in those which do not have the equivalent to the moving body shown by the black triangle, the intake port wind speed increases proportionally with the increase in the air volume.
[0032]
When large dust blocks the gap between the intake port 3 and the moving body 7, the differential pressure P16 acting on the moving body 7 increases because the exhaust pressure P6 decreases (negative pressure increases). Therefore, the force acting on the spring 8 (spring force F8) increases, and the spring 8 contracts (the same as when the movable body 7 is pulled toward the discharge pipe 6), and the opening area of the intake port 3 increases. Therefore, the dust is automatically removed.
[0033]
As described above, according to the first embodiment, since the microcomputer, the actuator, and the measuring device are not used, the number of parts is reduced, the structure is simple, and the collection performance is maintained high regardless of the increase or decrease of the air flow. It is possible to obtain a small and inexpensive cyclone dust collecting apparatus that can perform the operation.
For example, when installed in a vacuum cleaner, the air volume is reduced not only when the air volume changes due to the operation mode change operation, but also due to disturbances such as suction of foreign matter at the suction port 101 (see FIG. 10) and sticking to a carpet. Even in such a case, the collection performance of the cyclone dust collecting device can be maintained at a high level, so that a comfortable use environment can be provided.
Further, the size and weight of the vacuum cleaner, the ease of arrangement inside the machine, and the degree of freedom in external design are increased, so that the commercial value is improved.
[0034]
[Embodiment 2]
FIG. 5 is a sectional view of a cyclone dust collecting apparatus according to Embodiment 2 of the present invention. In FIG. 5, a moving body 7 is moved by an actuator 11. The same parts as those in the first embodiment (FIG. 1) are denoted by the same reference numerals, and a part of the description will be omitted.
The moving body 7 is arranged so as to be able to protrude into the intake pipe 6, and the opening area S3 of the intake port 3 is increased or decreased according to the amount of projection.
Further, an air volume W6 of the exhaust gas in the exhaust pipe 6 is measured by an air volume measuring device 9 provided in the exhaust pipe 6. The measurement information is transmitted to the microcomputer 10, and the microcomputer 10 determines the movement amount δ7 of the moving body 7 so that the inlet speed V3 (the inflow wind speed of the intake air at the inlet 3) becomes an optimum value, and sends it to the actuator 11. Tell Then, the actuator 11 moves the moving body 7 by the optimum movement amount δ7.
That is, when the air volume W6 is small, the moving body 7 is protruded so that the opening area S3 of the intake port 3 is small, and when the air volume W6 is large, the moving body 7 is pulled back so that the opening area S3 of the intake port 3 is large.
[0035]
Furthermore, when the large dust 99 is sucked when the air volume W6 is relatively small, the dust 99 is caught in the gap between the intake port 3 and the moving body 7 as shown in FIG. At this time, since the opening area S3 of the intake port 3 is reduced by being closed by the dust 99, the air volume W6 flowing through the exhaust pipe 6 is rapidly reduced.
When the microcomputer 10 determines that dust clogging has occurred based on this information (the change amount (differential value) of the airflow W6 has become equal to or more than a predetermined value), the microcomputer 10 instructs the actuator 11 to suck the moving body 7 It is commanded to pull back once to the position where the opening area S3 of the mouth 3 is maximized, and then to push it to the optimum position. Thus, the dust 99 caught in the gap between the moving body 7 and the suction port 3 is removed.
[0036]
Note that the dust clogging detecting means in FIG. 5 is not limited to the means for measuring the air volume W6 by the air volume measuring device 9, and may measure the air volume from the wind speed and pressure information, or estimate the air volume from the supplied electric power. good.
Further, instead of the air volume measuring device 9, a differential pressure gauge for measuring a differential pressure P16 between the exhaust pressure P6 and the intake pressure P1 may be provided.
[0037]
FIG. 6 is a cross-sectional view showing another dust clogging detecting means of the cyclone dust collecting apparatus according to Embodiment 2 of the present invention. The same parts as those in FIG. 5 are denoted by the same reference numerals, and a part of the description will be omitted.
In FIG. 6A, a material confirmation sensor 12 (so-called material presence sensor) is installed in the intake port 3 to directly detect the presence or absence of dust clogging in the relevant portion.
The material confirmation sensor 12 detects a capacitance or a dielectric constant (or a change amount thereof), detects a reflected light by irradiating light (or a change amount thereof), or injects a gas and ejects a gas. (Or the amount of change thereof), or any other type.
In FIG. 6B, a strain gauge 13 is provided on a connecting rod 11a connecting the actuator 11 and the moving body 7, and a force (or a change amount) acting on the moving body 7 is monitored to determine whether or not dust is clogged. Is detected.
When the actuator 11 is a fluid cylinder, the pressure of the fluid (or a change amount thereof) may be detected. Furthermore, a position detector may be installed on the moving body 7 to detect the amount of movement (or the amount of change).
[0038]
[Embodiment 3]
FIG. 7 is a sectional view of a cyclone dust collecting apparatus according to Embodiment 3 of the present invention. In FIG. 6, the moving body 7 is moved by the actuator 11 only when the gap between the intake port 3 and the moving body 7 is closed by dust or the like. The same parts as in the first embodiment (FIG. 1) or the second embodiment (FIG. 5) are denoted by the same reference numerals, and a part of the description will be omitted.
The moving body 7 is movably disposed in the connecting pipe 16, and the pressure difference 16 and the spring force F7 are balanced. Only when the microcomputer 10 determines that the intake port 3 is clogged with dust based on the detection signal of the material confirmation sensor 12, the connecting rod 11a of the actuator 11 is locked to the moving body 7 and the It is pulled back to the position where the opening area is maximized.
Although dust clogging is detected by the material confirmation sensor 12 in FIG. 7, any dust clogging detecting means may be used as in the second embodiment.
As a result, even when the air flow W1 changes, the moving body 7 automatically moves, and the inlet wind speed V3 is always maintained at an optimum value (the operation and effect of the first embodiment). When 99 is caught, it is removed (the operation and effect of the second embodiment).
[0039]
[Embodiment 4]
8 and 9 are sectional views of a cyclone dust collecting apparatus according to Embodiment 4 of the present invention. The same parts as those in the first embodiment (FIG. 1) are denoted by the same reference numerals, and a part of the description will be omitted.
8 and 9, when the operation of the cyclone dust collecting device is stopped and the exhaust from the cyclone chamber 2 is stopped, that is, both the exhaust pressure P6 and the intake pressure P1 become the atmospheric pressure, and the differential pressure P16 becomes zero. When this happens, the spring 8 expands and the moving body 7 completely blocks the intake port 3.
Therefore, for example, when the cyclone dust collecting device is installed in a vacuum cleaner, dust 90 in the cyclone chamber 2 enters the suction pipe 1 even if the vacuum cleaner rolls over when not operating as shown in FIG. It is possible to stay in the cyclone chamber 2 without performing. Therefore, even when the connection pipe 103 is removed, the dust 90 does not escape outside the vacuum cleaner (see FIG. 10).
The means for moving the operating unit 7 to the position where the intake port 3 is completely closed is not limited to a spring, and an actuator may be used as in the second or third embodiment.
[0040]
【The invention's effect】
As described above, according to the present invention, it is possible to maintain a high collection performance regardless of the amount of air to be sucked.
[Brief description of the drawings]
FIG. 1 is a sectional view of a cyclone dust collecting apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a partial cross-sectional view illustrating a force acting on a moving body in FIG.
FIG. 3 is a correlation diagram showing a relationship between an air volume and a pressure loss of the cyclone dust collecting apparatus according to Embodiment 1 of the present invention.
FIG. 4 is a correlation diagram showing the relationship between the air flow rate and the intake port wind speed of the cyclone dust collecting apparatus according to Embodiment 1 of the present invention.
FIG. 5 is a sectional view of a cyclone dust collecting apparatus according to Embodiment 2 of the present invention.
FIG. 6 is a cross-sectional view showing another dust clogging detecting means of the cyclone dust collecting apparatus according to Embodiment 2 of the present invention.
FIG. 7 is a sectional view of a cyclone dust collecting apparatus according to Embodiment 3 of the present invention.
FIG. 8 is a sectional view of a cyclone dust collecting apparatus according to Embodiment 4 of the present invention.
FIG. 9 is a sectional view of a cyclone dust collecting apparatus according to Embodiment 4 of the present invention.
FIG. 10 is a schematic view showing an example of a conventional vacuum cleaner.
FIG. 11 is a plan sectional view showing a conventional variable inlet flow path type separator.
FIG. 12 is a schematic view of a conventional cyclone device.
[Explanation of symbols]
Reference Signs List 1 intake pipe, 2 cyclone chamber, 3 intake port, 4 dust collection chamber, 5 exhaust port, 6 exhaust pipe, 7 moving body, 8 spring, 9 air flow measuring device, 10 microcomputer, 11 actuator, 12 material confirmation sensor, 13 strain Gauge, 16 connecting pipes, P1 intake pressure, P6 exhaust pressure, P16 differential pressure, W1 intake air volume, V3 intake port wind speed, S3 opening area, δ7 moving amount of moving body, δ8 spring expanding and contracting amount, spring coefficient of K spring .

Claims (14)

A cyclone chamber that separates dust and air by swirling intake air made of air mixed with dust,
An intake pipe installed at an intake port of the cyclone chamber to suck the intake air;
An exhaust pipe that is installed at an exhaust port of the cyclone chamber and discharges exhaust air that is air separated from dust;
A connection pipe connecting the intake pipe and the exhaust pipe,
A moving body that is disposed inside the connecting pipe and moves by a pressure difference between an intake pressure in the intake pipe and an exhaust pressure in the exhaust pipe, and that changes an opening area of the intake port. And cyclone dust collector. 2. The cyclone dust collecting apparatus according to claim 1, wherein an elastic body is installed or abutted on the moving body, and the moving body is pushed or pulled by the elastic body in a direction to reduce the opening area. A relationship between the pressure difference and the inflow speed of the intake air at the intake port,
A relationship between the inflow speed of the intake air at the intake port and the opening area,
The cyclone dust collecting apparatus according to claim 2, wherein an elastic coefficient of the elastic body is set based on a relationship between the opening area and a moving distance of the moving body. 4. The cyclone dust collecting apparatus according to claim 1, wherein a flow rate of the intake air at the intake port is controlled to 15 to 25 m / s. 5. The cyclone dust collecting apparatus according to any one of claims 1 to 4, wherein the movable body is capable of closing the intake port. 6. The cyclone dust collecting apparatus according to claim 5, wherein an actuator is installed or abutted on the moving body, and the actuator moves the moving body to close the intake port. Dust clogging detection means for detecting dust clogging in a gap between the moving body and the intake port,
An actuator for moving the moving body,
7. The cyclone dust collecting apparatus according to claim 6, wherein the actuator moves the movable body so as to maximize the opening area based on a dust clogging signal from the dust clogging detection unit. 8. The cyclone dust collecting apparatus according to claim 7, wherein said dust clogging detecting means has a flow sensor for measuring a flow rate of exhaust gas flowing through said exhaust pipe. A load sensor for detecting a force acting on the moving body, a speed sensor for detecting a moving speed or a moving acceleration of the moving body, or a clog in a gap between the moving body and the intake port. The cyclone dust collecting apparatus according to claim 7, further comprising any one of a material confirmation sensor for directly detecting the dust. The cyclone dust collecting apparatus according to claim 7, wherein the dust clogging detecting means includes a pressure sensor for measuring a pressure difference between an intake pressure in the intake pipe and an exhaust pressure in the exhaust pipe. A cyclone chamber that separates dust and air by swirling intake air made of air mixed with dust,
An intake pipe installed at an intake port of the cyclone chamber to suck the intake air;
An exhaust pipe that is installed at an exhaust port of the cyclone chamber and discharges exhaust air that is air separated from dust;
A movable body capable of changing the opening area of the intake port,
An actuator for moving the moving body,
Dust clogging detection means for detecting dust clogging in a gap between the moving body and the intake port,
A cyclone dust collecting apparatus, wherein the actuator moves the movable body based on a dust clogging signal from the dust clogging detection means so as to maximize the opening area. The cyclone dust collecting apparatus according to claim 11, wherein the dust clogging detecting means has a flow rate sensor for measuring a flow rate of exhaust gas flowing through the exhaust pipe. A load sensor for detecting a force acting on the moving body, a speed sensor for detecting a moving speed or a moving acceleration of the moving body, or a clog in a gap between the moving body and the intake port. The cyclone dust collecting apparatus according to claim 11, further comprising any one of a material confirmation sensor for directly detecting the dust. The cyclone dust collecting apparatus according to claim 11, wherein the dust clogging detecting means includes a pressure sensor for measuring a pressure difference between an intake pressure in the intake pipe and an exhaust pressure in the exhaust pipe.

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