JP2012100816A - Cyclone separator and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the following problems relating to reliability in destruction strength, a life or the like: in a structure in which garbage is compressed and volume-reduced by operating compression means, a movable part is overloaded in a condition where garbage is accumulated in full in a dust collection chamber.SOLUTION: A cyclone separator includes: a first opening part formed by opening a part of a swirl chamber; a second opening part formed by opening a part of the swirl chamber and disposed on the downstream of the first opening part; a first dust collection chamber in communication with the swirl chamber through the first opening part; a second dust collection chamber in communication with the swirl chamber through the second opening part; and a discharge port for discharging air in the swirl chamber. The first and second dust collection chambers are communicating with each other with a communicative part provided in a partition wall that divides the first and second dust collection chambers. Further, The opening area of the communicative part is made smaller than the opening area of the first opening part.

Description

  The present invention relates to a cyclone separator and a vacuum cleaner equipped with the cyclone separator.

In a general cyclone separator (for example, Patent Document 1), dust-containing air that has flowed from an inflow port is separated into dust and clean air by centrifugal force in a swirl chamber. The separated dust is captured in the dust collecting chamber, and the clean air is discharged from the cyclone separator through the discharge pipe. At this time, the dust trapped in the dust collection chamber descends due to gravity, accumulates from the bottom of the dust collection chamber, and is compressed by its own weight. However, in particular, when the cyclone separator described above is applied to a vacuum cleaner, bulky fiber waste contained in general household waste is light in weight and hardly compressed, so a dust collection chamber with a limited internal volume is immediately available. At the same time, the frequency of waste disposal was high, and at the same time, the waste was thrown up.
In response to the above problem, a technique (for example, Patent Document 2) in which a compression unit that compresses dust accumulated in a dust collection chamber is mounted is disclosed.

Special Table 2002-503541 Japanese Patent No. 3476076

  However, the prior art disclosed in the above-mentioned Patent Document 2 includes a movable portion in the compression means, and the movable portion is moved to compress dust to reduce the volume, thereby emptying the cyclone dust collecting portion. Since the configuration increases the volume, particularly when dust is accumulated in the dust collection chamber in a full state, an overload is applied to the movable part, and there is a problem in reliability such as breaking strength and life. In addition, a compressive force cannot be applied to the dust accumulated on the non-operating side of the movable part (the upper side of the movable part in Patent Document 2), and at the same time, dust adheres to the non-operating side of the movable part. If it remains or remains, it is necessary to disassemble the dust collection chamber and dispose of the trash.

Accordingly, the present invention has been made to solve the above-described problem, and a cyclone separator that can reliably compress dust without a movable part in the cyclone separator, and the cyclone separator. The object is to provide a vacuum cleaner equipped with the device.

The cyclone separator according to the present invention includes an inflow port through which dust-containing air flows from an external air passage, and a swirl that is formed in a substantially cylindrical shape and separates air and dust by swirling the dust-containing air that has flowed from the inflow port. A chamber, a first opening formed by opening a part of the swirl chamber, and a second opening formed by opening a part of the swirl chamber and disposed downstream of the first opening. A first dust collection chamber that communicates with the swirl chamber via the first opening, a second dust collection chamber that communicates with the swirl chamber via the second opening, An exhaust port for discharging air, and the first dust collection chamber and the second dust collection chamber are connected to each other by a communication portion provided in a partition partitioning the first dust collection chamber and the second dust collection chamber. While communicating, the opening area of a communication part is made smaller than the opening area of a 1st opening part.

  According to the cyclone separating apparatus and the vacuum cleaner equipped with the cyclone separating apparatus according to the present invention, by adopting the above-described configuration, the cyclone separating apparatus can be reliably compressed without providing a movable part. Is possible.

It is an external appearance perspective view of the vacuum cleaner which shows Embodiment 1 of this invention. 1 is a perspective view of a vacuum cleaner main body of an electric vacuum cleaner showing Embodiment 1 of the present invention. It is a top view of the vacuum cleaner main body of the electric vacuum cleaner which shows Embodiment 1 of this invention. It is aa sectional drawing of the vacuum cleaner main body of the vacuum cleaner which shows Embodiment 1 of this invention. It is bb sectional drawing of the vacuum cleaner main body of the vacuum cleaner which shows Embodiment 1 of this invention. It is a top view of the cleaner main body in the state where the dust collection unit of the electric vacuum cleaner showing Embodiment 1 of the present invention was removed. It is an external appearance perspective view of the dust collection unit of the vacuum cleaner which shows Embodiment 1 of this invention. It is a front view of the dust collection unit of the vacuum cleaner which shows Embodiment 1 of this invention. It is a left view of the dust collection unit of the vacuum cleaner which shows Embodiment 1 of this invention. It is a top view of the dust collection unit of the electric vacuum cleaner which shows Embodiment 1 of this invention. It is AA sectional drawing of the dust collection unit of the vacuum cleaner of FIG. 8 which shows Embodiment 1 of this invention. It is BB sectional drawing of the dust collection unit of the vacuum cleaner of FIG. 8 which shows Embodiment 1 of this invention. It is CC sectional drawing of the dust collection unit of the vacuum cleaner of FIG. 10 which shows Embodiment 1 of this invention. It is DD sectional drawing of the dust collection unit of the vacuum cleaner of FIG. 13 which shows Embodiment 1 of this invention. It is EE sectional drawing of the dust collection unit of the vacuum cleaner of FIG. 13 which shows Embodiment 1 of this invention. It is FF sectional drawing of the dust collection unit of the vacuum cleaner of FIG. 13 which shows Embodiment 1 of this invention. It is an enlarged view of the communication part in CC section of the dust collection unit of the vacuum cleaner of FIG. 13 which shows Embodiment 1 of this invention. It is II cross section of the dust collection unit of the vacuum cleaner of FIG. 8 which shows Embodiment 2 of this invention. It is II cross section of the dust collection unit of the vacuum cleaner of FIG. 8 which shows Embodiment 2 of this invention. It is an exploded view at the time of garbage disposal of the dust collection unit which shows Embodiment 3 of this invention. It is an exploded view of the dust collection unit which shows Embodiment 3 of this invention. It is ZZ sectional drawing of FIG. 3 which shows Embodiment 3 of this invention. It is ZZ sectional drawing of FIG. 3 for demonstrating the effect of Embodiment 3 of this invention. It is a graph regarding the change of the collection efficiency at the time of changing the air permeability of the communication part 31 which shows Embodiment 4 of this invention, and turning speed.

  A vacuum cleaner equipped with a cyclone separator according to an embodiment of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an appearance of a vacuum cleaner according to the present invention. As shown in FIG. 1, the vacuum cleaner 100 includes a suction port body 1, a suction pipe 2, a connection pipe 3, a suction hose 4, and a cyclone-type vacuum cleaner body 5. The suction port body 1 sucks dust and dust-containing air on the floor. One end of a straight cylindrical suction pipe 2 is connected to the outlet side of the suction port body 1. The other end of the suction pipe 2 is provided with a handle in which an operation switch for controlling the operation of the vacuum cleaner 100 is provided, and one end of the connection pipe 3 that is slightly bent in the middle is connected. One end of a flexible bellows-shaped suction hose 4 is connected to the other end of the connection pipe 3. Furthermore, the vacuum cleaner body 5 is connected to the other end of the suction hose 4. A power cord is connected to the cleaner body 5. When the power cord is connected to an external power source, electricity is supplied, and an electric blower (not shown) is driven to perform a suction operation. The suction port body 1, the suction pipe 2, the connection pipe 3, and the suction hose 4 constitute a part of a suction path for allowing dust-containing air to flow from the outside to the inside of the cleaner body 5.

FIG. 2 is a perspective view of the cleaner body 5, and FIG. 3 is a top view of the cleaner body 5. 4 is an aa cross-sectional view of the cleaner body 5 of FIG. 3, and FIG. 5 is a bb cross-sectional view of the cleaner body 5 of FIG. FIG. 6 is a top view of the cleaner body 5 with the dust collection unit 50 removed. As shown in FIGS. 2 to 6, the vacuum cleaner body 5 includes a suction air passage 49, a dust collection unit 50, an exhaust air passage 51, a filter 52, an electric blower 53, and an exhaust port 54. I have. In addition, the vacuum cleaner main body 5 includes a wheel 55, a cord reel portion (not shown), and the like at the rear portion thereof. The dust collection unit 50 includes a primary cyclone separator 10 and a secondary cyclone separator 20 that is provided in parallel with the primary cyclone separator 10 and connected to the downstream side of the primary cyclone separator 10. Yes.
Although the configuration, operation, and effect of each part will be described later, the primary cyclone separator 10 includes a primary inlet 11, a primary swirl chamber 12, a zero-order opening 113, a primary opening 13, and a zero-order. A dust collection chamber 114, a primary dust collection chamber 14, a primary discharge port 15, and a primary discharge pipe 16 are provided. Further, the secondary cyclone separator 20 includes a secondary inlet 21, a secondary swirl chamber 22, a secondary opening 23, a secondary dust collection chamber 24, a secondary discharge port 25, and a secondary discharge pipe 26. And. The zero-order dust collection chamber 114, the primary dust collection chamber 14, and the secondary dust collection chamber 24 described above are formed by a single case component, and the zero-order dust collection chamber 114 includes the secondary dust collection chamber 24. It is arranged to surround.
The primary cyclone separator 10 is the cyclone separator as defined in the claims, the primary inlet 11 is the inlet as defined in the claims, the primary swirl chamber 12 is the swirl chamber as defined in the claims, and the zero-order opening. Reference numeral 113 denotes a first opening referred to in the claims, primary opening 13 refers to the second opening referred to in the claims, and zero-order dust collection chamber 114 refers to the first dust collection chamber referred to in the claims. The primary dust collection chamber 14 corresponds to a second dust collection chamber referred to in the claims, and the primary discharge port 15 corresponds to an exhaust port referred to in the claims.

Here, the path | route which discharges the air which flowed in the inside of the cleaner body 5 out of the cleaner body 5 is demonstrated (refer FIGS. 2-6).
The air flowing into the cleaner body 5 reaches the primary cyclone separator 10 via the intake air passage 49. In the primary cyclone separator 10, the primary inlet 11, the primary swirl chamber 12, and the primary outlet 15 flow in this order, and the air discharged from the primary outlet 15 passes through the primary outlet 16 and the secondary cyclone separator. Reach 20 In the secondary cyclone separator 20, the secondary inlet 21, the secondary swirl chamber 22, and the secondary outlet 25 flow in this order, and the air discharged from the secondary outlet 25 passes through the secondary outlet 26. Then, it flows to the exhaust air passage 51 side. After that, the air is configured to be discharged to the outside of the cleaner body 5 through an exhaust path including the exhaust air path 51, the filter 52, the electric blower 53, and the exhaust port 54.
Further, since the secondary cyclone dust collector 20 is installed at the downstream position of the primary cyclone dust collector 10, the secondary cyclone dust collector 20 captures garbage that could not be collected by the primary cyclone dust collector 10. Thus, the collection performance of the dust collection unit 50 can be improved, and the air discharged from the cleaner body 5 can be further purified.

Next, the detailed structure of the primary cyclone separator 10 and the secondary cyclone separator 20 which comprise the dust collection unit 50 is demonstrated.
FIG. 7 is a perspective view showing the appearance of the dust collection unit 50, and FIG. 8 is a front view of the dust collection unit 50. FIG. 9 is a left side view of the dust collection unit 50, and FIG. 10 is a top view of the dust collection unit 50. 11 is a cross-sectional view taken along the line AA of the dust collection unit 50 in FIG. 8, FIG. 12 is a cross-sectional view taken along the line BB of the dust collection unit 50 in FIG. 8, and FIG. 14 is a DD cross-sectional view of the dust collection unit 50 of FIG. 13, FIG. 15 is a cross-sectional view of the dust collection unit 50 of FIG. 13 taken along the line EE, and FIG. F sectional drawing and FIG. 17 are the enlarged views of the communication part in CC cross section of the dust collection unit of a vacuum cleaner.

First, the configuration of the primary cyclone separator 10 will be described with reference to FIGS. 11, 14, 15, 16, and 17.
The primary cyclone separating apparatus 10 is configured to swirl the dust-containing air introduced from the primary inlet 11 by connecting the primary inlet 11 that takes in dust-containing air from the intake air passage 49 and the primary inlet 11 approximately in a tangential direction. The swirl chamber 12 is provided, and the intake air flowing in from the primary inflow port 11 is swirled to separate dust, and then the intake air is discharged from the primary discharge port 15. In addition, a primary discharge pipe 16 that guides the exhaust from the primary discharge port 15 to the secondary cyclone separator 20 is provided.
Further, the primary discharge pipe 16 is disposed so as to protrude into the primary swirl chamber 12 so that the axis of the primary swirl chamber 12 and the axis thereof are substantially aligned, and the side wall of the projecting portion has a substantially cylindrical shape having a large number of fine holes. The cylindrical body 16b and a substantially conical cone body 16a having a large number of fine holes, and the primary discharge port 15 is constituted by the fine holes.
Further, the side wall of the primary swirl chamber 12 is constituted by a substantially cylindrical cylindrical portion 12b and a substantially conical cone portion 12a. Further, a zero-order opening 113 formed by opening a part of the cylindrical part 12 b, a primary opening 13 formed by opening a part of the conical part 12 a, and a primary through the zero-order opening 113. The first-order dust collection chamber 114 communicates with the swirl chamber 12 and the primary dust collection chamber 14 communicates with the first-order swirl chamber 12 via the primary opening 13, and the zero-order dust collection chamber 114 has a zero-order opening. It is formed so as to extend downward from the portion 113. Further, the zero-order opening 113 is formed at a position lower than the primary inlet 11.
Further, as shown in FIGS. 13 and 17, the partition wall 30 that partitions the zero-order dust collection chamber 114 and the primary dust collection chamber 14 is formed with a partition opening 30a that opens a part of the partition wall 30, and the partition wall The communication part 31 which distribute | circulates the 0th dust collection chamber 114 and the primary dust collection chamber 14 by installing the mesh member 32 provided with many fine holes 32z in the side surface by the side of the 0th dust collection chamber 114 of the opening part 30a. It is composed. Further, the mesh member 32 is sandwiched and fixed between the frame body 33 and the partition wall 30. The opening area of the fine hole 32z is smaller than the opening area of the zero-order opening 113, and more preferably the opening diameter is set to suppress the passage of dust trapped in the zero-order dust collection chamber 114. It is good to set it as φ1 mm or less. Further, in order to capture relatively bulky dust in the zero-order dust collection chamber 114, the opening area of the zero-order opening 113 is formed larger than the opening area of the primary opening 13. Further, the communication portion 31 is formed so as to be disposed at a portion of the partition wall 30 located below the midpoint between the communication portion 31 and the zeroth-order opening 113, that is, the communication portion 31 and the zeroth-order opening 113. Is configured to be longer than the distance between the center position of the partition wall 30 and the zero-order opening 113 in the direction in which the partition wall 30 extends.

An outline of the operation of the primary cyclone separator 10 will be described.
When the primary cyclone separating apparatus 10 takes in the dust-containing air from the primary inlet 11 through the intake air passage 49, the dust-containing air flows along the side wall of the primary swirl chamber 12, and thus becomes a swirl airflow. While forming a forced vortex region near the central axis and a quasi-free vortex region on the outer periphery thereof, it flows downward due to its path structure and gravity. At this time, since centrifugal force acts on the waste, relatively bulky waste such as large fiber waste or hair (hereinafter referred to as “garbage A”) is pressed against the inner wall of the primary swirl chamber 12 and separated from the swirl airflow. Then, it is fed into the zero-order dust collection chamber 114 through the zero-order opening 113. At this time, a part of the airflow flows into the zero-order dust collection chamber 114 through the zero-order opening 113, flows through the communication portion 31, and flows into the primary dust collection chamber 14. Due to this air flow and its own weight, the dust A descends through the zero-order dust collection chamber 114 and is then compressed in such a manner that it is pressed against the non-opening portion of the communication portion 31 and the partition wall 30 around the communication portion 31. This is because the opening area of the fine hole 32z is smaller than the opening area of the zero-order opening 113, and the zero-order opening is formed by the non-opening of the communication part 31 and the partition wall 30 around the communication part 31. The dust A that has passed through 113 is compressed by the force of the air flow while preventing the dust A from flowing into the primary dust collection chamber 14, and the air flow can flow into the primary dust collection chamber 14. The airflow that has flowed into the primary dust collection chamber 14 flows into the primary swirl chamber 12 through the primary opening 13 and is discharged from the primary discharge port 15.

In addition, the dust that has not flowed into the zero-order dust collection chamber 114 travels below the primary swirl chamber 12 in a swirling airflow descending the primary swirl chamber 12. As a result, relatively small dust (hereinafter referred to as “garbage B”) such as sand dust and fine fiber dust is sent into the primary dust collection chamber 14 via the primary opening 13 and captured. The swirling airflow from which the waste A and the waste B have been removed rises along the central axis that is reversed below the primary swirl chamber 12 and is discharged from the primary discharge port 15. The air discharged from the primary discharge port 15 passes through the primary discharge pipe 16 and is guided to a secondary cyclone separator described later.

In the primary cyclone separating apparatus 10 configured as described above, the dust A is accommodated in a compressed state in the zero-order dust collection chamber 114 by the force of the air and its own weight. In addition to the effect, since a large amount of garbage A can be deposited in the limited volume of the zero-order dust collection chamber 114, there is an effect of reducing the frequency of waste disposal.
In addition, in the zero-order dust collection chamber 114 having a compression function, the waste A (fiber waste and hair) whose volume is greatly reduced when compressed is captured and compressed, so the volume of the waste is reduced more efficiently and the zero-order collection. The empty volume of the dust chamber 114 can be increased.
Further, the communication part 31 is formed so as to be disposed at a portion of the partition wall 30 located below the intermediate point between the communication part 31 and the zero-order opening 113, that is, the communication part 31 and the zero-order opening 113. Is configured to be longer than the distance between the center position of the partition wall 30 and the zero-order opening 113 in the direction in which the partition wall 30 extends, so that the distance between the communication portion 31 and the zero-order opening 113 is set. The starting point where the distance increases and the dust A accumulates can be separated from the 0th-order opening 113, and re-scattering of the dust A from the 0th-order opening 113 can be prevented and suppressed.
Further, by providing the communication portion 31 below the partition wall 30 extending below the zero-order dust collection chamber 114, the compression effect is further enhanced by utilizing the dead weight of the garbage A.
Further, since the communication portion 31 is provided below the partition wall 30, the dust A is accumulated from below the zero-order dust collection chamber 114, and the dust A is transferred to the primary swirl chamber 12 through the zero-order opening 113. Difficult to scatter.
Further, the communicator 31 is constituted by the mesh member 32 having a large number of fine holes 32z, so that the dust A is compressed without flowing into the primary dust collecting chamber 14 as much as possible.
In addition, since the waste A mainly consists of fiber waste and hair, the waste A has air permeability even in a state where a certain amount is accumulated, and the air flow rate of the communication portion 31 is hardly impaired, and the dust A is not damaged. The compressive force can continue to act.
Needless to say, this configuration is a configuration in which dust is compressed by the force of air, and since there is no movable portion for dust compression, there are no issues regarding the strength of the movable portion and reliability of life, and zero-order collection. A compressive force can be reliably applied to all the dust trapped in the dust chamber 114 and the primary dust collection chamber 14.

Next, the configuration of the secondary cyclone separator 20 will be described with reference to FIGS. 12, 13, and 16.
The secondary cyclone separator 20 is formed in a substantially cylindrical shape with a secondary inlet 21 into which dust-containing air containing fine dust that could not be separated by the primary cyclone separator 20 is formed, and the secondary inlet 21 is in a tangential direction. The secondary swirl chamber 22 that communicates and swirls the dust-containing air flowing from the secondary inlet 21 to separate the air and dust, and the air separated from the dust-containing air in the secondary swirl chamber 22 is discharged. A secondary discharge port 25; a secondary dust collection chamber 24 that captures dust separated from dust-containing air; and a secondary opening 23 that communicates the secondary dust collection chamber 24 and the secondary swirl chamber 22. Yes. Further, the secondary cyclone separating device 20 opens a part of the wall surface of the secondary swirl chamber 22 and projects a secondary discharge pipe 26 from the opening into the secondary swirl chamber 22. The tip opening of the pipe 26 is used as the secondary discharge port 25, and the electric blower 53 and the secondary swirl chamber 22 communicate with each other. The side wall of the secondary swirl chamber 22 includes a substantially cylindrical secondary cylindrical portion 22b and a substantially conical secondary cone portion 22a.

An outline of the operation of the secondary cyclone separator 20 will be described.
When the secondary cyclone separator 20 takes in the dust-containing air containing fine dust discharged from the primary cyclone separator 10 from the secondary inlet 21, the dust-containing air flows along the side wall of the secondary swirl chamber 22. As a result, a swirl airflow is generated, and a forced vortex region in the vicinity of the central axis and a quasi-free vortex region on the outer periphery thereof are formed while flowing downward due to the path structure and gravity. At this time, since the centrifugal force acts on the dust, the fine dust that could not be captured by the primary cyclone separation device 10 is pressed against the inner wall of the secondary swirl chamber 22 and separated from the intake air. After proceeding below the next swirl chamber 22, it is collected in the secondary dust collection chamber 24 through the secondary opening 23. The air from which the dust has been removed rises along the central axis of the secondary swirl chamber 22 and is discharged from the secondary discharge port 25. The air discharged from the secondary discharge port 25 is guided to the exhaust air passage 51 through the secondary discharge pipe 26. Thereby, the air discharged | emitted from the vacuum cleaner 100 can be further purified.

Embodiment 2. FIG.
The second embodiment to be described below explains a plurality of arrangements of the communication portions 31 and is basically the same as the first embodiment described above. Reference numerals are assigned and explanations thereof are omitted.
18 is a cross-sectional view taken along the line II of the dust collection unit of the electric vacuum cleaner of FIG. 8 showing the second embodiment.
As shown in FIG. 18, a plurality of communication portions 31 are provided. Further, among the plurality of communication portions 31, the opening area of the communication portion 31 b closer to the zeroth order opening 113 is made smaller than the opening area of the communication portion 31 a farther from the zeroth order opening 113. Yes.

As described above, by providing a plurality of communication portions 31, a compressive force can be applied to the waste A from a plurality of locations, and therefore the waste A can be compressed as a whole rather than locally. Furthermore, the opening area of the communication part 31b closer to the 0th order opening 113 among the plurality of communication parts 31 is made smaller than the opening area of the communication part 31a farther from the 0th order opening 113. As a result, the communication portion 31a that is farther from the 0th-order opening 113 has a lower pressure loss than the communication portion 31b that is closer to the 0th-order opening 113, so that airflow is more likely to circulate. The dust A that has flowed into the zero-order dust collecting chamber 114 tends to accumulate from the communication portion 31a side that is farther from the zero-order opening 113. Accordingly, it is possible to uniformly store the garbage A in the zero-order dust collection chamber 114 without hindering the movement of the dust A entering from the zero-order opening 113 in the zero-order dust collection chamber 114.

In the second embodiment shown in FIG. 18, the opening area of the communication portion 31 b that is closer to the 0th-order opening 113 among the plurality of communication portions 31 is the distance that is farther from the 0th-order opening 113. In order to make it smaller than the opening area of the communication portion 31a, the area of the mesh member 32 is changed with the fine holes 32z being constant, but other configurations may be employed. For example, the area of the mesh member 32 may be constant and the opening area of the fine hole 32z may be changed, or the opening ratio of the mesh member 32 may be changed.

In the second embodiment shown in FIG. 18, the configuration in which the plurality of communication portions 31 are arranged in the direction of the swirling axis of the primary swirl chamber 12 is shown. However, as shown in FIG. Also good.

Embodiment 3 FIG.
The third embodiment to be described below describes the arrangement of the communication portion 31 and is basically the same as the first and second embodiments described above. The same reference numerals are given and the description thereof is omitted.
FIG. 20 is an exploded view of the dust collection unit according to Embodiment 3 when the dust is discarded. FIG. 21 is an exploded view of the dust collection unit according to the third embodiment. FIG. 22 is a ZZ cross-sectional view of FIG. FIG. 23 is a ZZ cross-sectional view of FIG. 3 that does not correspond to the structure of the present embodiment for explaining the effect of the third embodiment.
As shown in FIG. 20, the zero-order dust collection chamber 114 has a bottomed shape, and the zero-order dust collection chamber 114 and the primary swirl chamber 12 can be freely attached and detached. Then, the zero-order dust collecting chamber 114 is turned upside down to discard the dust. In addition, as shown in FIG. 2, the dust collection unit 50 is arranged to be inclined with respect to gravity in order to suppress the height of the cleaner body 5, and the opening surface 114 a of the zero-order dust collection chamber 114 is against gravity. It is arranged to be inclined. In such a configuration, as shown in FIG. 22, the communication portion 31 is provided at a position higher than the central axis of the zero-order dust collection chamber 114.

As described above, by providing the communication portion 31 at a position higher than the central axis of the zero-order dust collection chamber 114, the force for compressing the dust A is strong at a position higher than the central axis of the zero-order dust collection chamber 114. In order to work, the interface (hereinafter referred to as the upper surface of the dust A) between the dust A when the dust A is accumulated and the empty volume of the zero-order dust collection chamber 114 is the same direction as the opening surface 114a of the zero-order dust collection chamber 114 Therefore, the limited internal volume of the zero-order dust collection chamber 114 can be used effectively. This is due to the flow of the garbage A that goes in the direction of the communication portion 31 against the gravity acting on the garbage A.
Conversely, as shown in FIG. 23, when the communication portion 31 is provided at a position lower than the central axis of the zero-order dust collection chamber 114, the upper surface of the dust A is in the opening surface 114 a of the zero-order dust collection chamber 114. In order to have a large angle, the upper surface of the dust A protrudes from the zero-order dust collection chamber 114 while the empty volume of the zero-order dust collection chamber 114 remains, and the limited zero-order dust collection The internal volume of the chamber 114 cannot be used effectively.

Embodiment 4 FIG.
The fourth embodiment described below describes the air flow rate of the communication part 31 and is basically the same as the first to third embodiments described above. The same reference numerals are given and the description thereof is omitted.
In FIG. 24, the graph regarding the change of the collection efficiency at the time of changing the ventilation rate of the communication part 31 and a turning speed is shown. The air permeability (%) on the horizontal axis indicates the ratio of the air volume flowing through the communicating portion 31 to the air volume flowing into the primary inlet 11 and is calculated by the following equation.
Air permeability (%) = (air volume flowing through communication portion 31 (m ³ / s)) ÷ (air volume flowing into primary inlet 11 (m ³ / s)) × 100
The collection efficiency (%) on the left side of the vertical axis indicates the ratio of the amount of dust collected by the dust collection unit 50 to the amount of dust flowing into the dust collection unit 50, and is calculated by the following equation.
Collection efficiency (%) = (Amount of dust flowing into dust collection unit 50 (g)) ÷ (Amount of garbage collected by dust collection unit 50 (g)) × 100
Further, the swirling speed (m / s) on the right side of the vertical axis is the magnitude of the speed component in the swirling direction in the primary swirling chamber 12, and is the result of calculation by airflow analysis.
As shown in FIG. 24, the collection efficiency is almost flat when the air permeability is 5% or less, but when it exceeds 5%, the collection efficiency starts to decrease. This correlates well with the behavior of the decrease in turning speed shown in FIG. 24, and it can be seen that the collection efficiency decreases when the turning force decreases.

Therefore, by setting the air volume of the air flowing through the communication portion 31 to 5% or less of the air volume flowing from the inlet 11, the dust A can be collected without impairing the collection efficiency of the dust collection unit 50, that is, the primary cyclone separator 10. Can be compressed.
In the fourth embodiment, the air flowing through the communication portion 31 in order to increase the compression force of the garbage A as much as possible without reducing the collection efficiency of the primary cyclone separator 10, that is, to increase the air flow rate of the communication portion 31 as much as possible. The opening area of the communication portion 31 is adjusted so that the air volume of the air becomes 5% of the air volume of the air flowing in from the inlet 11.

In the above-described first to fourth embodiments, the secondary cyclone separator 20 is provided. However, the primary cyclone separator 10 alone has the same effect. Needless to say, the same effect can be obtained when a plurality of cyclones (primary cyclone separator, secondary cyclone separator, tertiary cyclone separator, etc.) are provided. In addition, since the present invention relates to the structure of the cyclone separator, the present invention is not limited to the canister type vacuum cleaner described in the present embodiment.

  Moreover, in Embodiment 1-4 mentioned above, although the seal structure and lock structure between each component are not mentioned, it seems that this seal structure and lock structure do not disturb the flow of the airflow in the cyclone dust collector 50. It is desirable to be installed.

  DESCRIPTION OF SYMBOLS 1 Suction port body, 2 Suction pipe, 3 Connection pipe, 4 Suction hose, 5 Vacuum cleaner main body, 10 Primary cyclone separator, 11 Primary inlet, 12 Primary swirl chamber, 12a Primary cone part, 12b Primary cylindrical part, 13 Primary Opening, 14 Primary dust collection chamber, 15 Primary discharge port, 16a Cone, 15b Cylinder, 16 Primary discharge pipe, 20 Secondary cyclone separator, 21 Secondary inlet, 22 Secondary swirl chamber, 22a Secondary cone Part, 22b secondary cylindrical part, 23 secondary opening part, 24 secondary dust collecting chamber, 25 secondary discharge port, 26 secondary discharge pipe, 30 partition, 30a partition opening, 31 communication part, 32 mesh member, 32z Fine hole, 33 Frame, 49 Suction air passage, 50 Dust collection unit, 51 Exhaust air passage, 52 Filter, 53 Electric blower, 55 Wheel, 56 Anti-vibration rib, 57 Two Swirl chamber body, 100 vacuum cleaner 113 0-order opening, 114 0-order dust collection chamber.

Claims (10)

An inlet through which dust-containing air from the external airflow flows,
A swirl chamber that is formed in a substantially cylindrical shape and that swirls dust-containing air flowing from the inlet and separates air and dust;
A first opening formed by opening a part of the swirl chamber;
A second opening formed by opening a part of the swirl chamber and disposed downstream of the first opening;
A first dust collection chamber communicating with the swirl chamber via the first opening;
A second dust collection chamber communicating with the swirl chamber via the second opening;
A discharge port for discharging air in the swirl chamber;
With
While communicating with the first dust collection chamber and the second dust collection chamber by a communication portion provided in a partition wall that divides the first dust collection chamber and the second dust collection chamber,
The cyclone separating apparatus according to claim 1, wherein an opening area of the communication portion is smaller than an opening area of the first opening portion. The cyclone separator according to claim 1, wherein an opening area of the first opening is larger than an opening area of the second opening.   3. The cyclone separator according to claim 1, wherein the communication portion is disposed in a partition wall portion located below a midpoint between the first opening and the communication portion. The first dust collecting chamber is configured to extend downward from the first opening, and the communication portion is provided below the partition wall. Cyclone separator. The cyclone separator according to any one of claims 1 to 4, wherein the communication part is configured by a mesh member having a large number of fine holes. The cyclone separator according to claim 1, wherein a plurality of the communication portions are provided. The opening area of the communication part closer to the first opening part among the plurality of communication parts is made smaller than the opening area of the communication part farther from the first opening part. The cyclone separator according to claim 6. In the configuration in which the first dust collection chamber has a bottomed shape and the first dust collection chamber and the swirl chamber are detachable, the opening surface of the first dust collection chamber is inclined with respect to gravity. The cyclone separator according to any one of claims 1 to 7, wherein the cyclone separator is disposed so as to be provided and provided with the communication portion at a position higher than a central axis of the first dust collection chamber. The cyclone separator according to any one of claims 1 to 8, wherein an air volume of the air flowing through the communication portion is set to 5% or less of an air volume of air flowing from the inflow port. A vacuum cleaner comprising the cyclone separator according to any one of claims 1 to 9.

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