JP2013517111A - Collection device and vacuum cleaner having the collection device - Google Patents

Abstract

  The present invention provides a collection device that includes a dust suction tube, a first air intake channel, a first dust collection chamber, and a first filter disposed in the first dust collection chamber. . The collection device includes a second filter provided inside the first filter, a second air intake channel communicating the first filter and the second filter, and the first filter in the radial direction. An air baffle that isolates one filter from the second filter. A second dust collection chamber is provided at the top end of the first filter, and at least one of the first air intake channel and the second air intake channel extends in the axial direction. The existing spiral structure. The collector improves dust removal efficiency and air flow cleanliness, extends the useful life of the filter, reduces the frequency of filter replacement, significantly reduces the maintenance cost of the collector, and improves the applicability of the collector To do. The present invention also provides a vacuum cleaner including the above-described collection device with improved operational efficiency.

Description

  The present invention relates to the technical field for removing dust, and more specifically to a collection device. The present application also relates to a vacuum cleaner comprising the collecting device described above.

  As economic construction develops rapidly, environmental demands are increasing day by day. Various vacuum cleaners have been developed. A vacuum cleaner generally uses high-speed rotation of an electric motor to suck dust and debris by generating negative pressure air in a sealed housing. The portable vacuum cleaner is a kind of vacuum cleaner and is preferred by users. This is because the portable vacuum cleaner is portable and small, and can be used in a small space.

  FIG. 1 is a schematic diagram of the structure of a collection device of a typical vacuum cleaner in the prior art. The direction indicated by the arrow in the drawing is the direction of movement of dust when the vacuum cleaner is operating.

  As shown by the direction indicated by the arrow in the drawing, in the vacuum cleaner in the prior art, the power supply motor extracts air in the dust collection chamber 12 and generates negative pressure in the dust collection chamber 12. In this way, air and dust pass through the dust suction tube 13 and the air channel and enter the dust collecting chamber 12 during the operation of the power supply motor. After rotation, it is collected in a spiral in the dust collection chamber 12 so that the purpose of separating the dust is achieved.

  However, when the amount of dust increases, the dust collected in the dust collection chamber 12 tends to affect the power supply motor, that is, the dust adheres to the filter 11 and clogs the filtering screen of the filter 11. There is a tendency for dust to move toward the filter 11. In this way, the power consumption of the power supply motor increases and the noise of the vacuum cleaner increases, while the operating efficiency of the vacuum cleaner decreases. Furthermore, the service life of the filter 11 is adversely affected, the frequency of maintenance of the filter 11 increases, and the cost required for cleaning increases.

  FIG. 2 is a schematic diagram showing the structure of the collecting device in the prior art, and FIG. 3 is a schematic diagram showing the operating state of the collecting device shown in FIG. The direction indicated by the solid line arrow represents the direction of the force generated by the power component, and the direction indicated by the dotted line arrow represents the direction of dust movement.

  In Patent Document 1, the inventor sets a channel for guiding the dust collection chamber 12 so that a spiral air flow shown in FIG. 3 is formed around the filter 11 after the dust enters the dust collection chamber 12. Due to the improved spiral air channel, dust is moved as far as possible to the end of the dust collection chamber 12 to keep the dust separated from the filter 11, thereby extending the useful life of the filter 11, The noise and power consumption of the vacuum cleaner are reduced, and the cost for removing dust is reduced.

  However, if more dust is present, the collection device shown in FIGS. 2 and 3 will have difficulty adversely affecting the applicability of the vacuum cleaner because it is difficult to satisfy the requirement to remove dust.

  Therefore, the technical problem to be solved by a person skilled in the art to which the present invention belongs is to improve the operation efficiency of the vacuum cleaner, improve the applicability of the collecting device, and extend the useful life of the filter. is there.

Chinese Patent Application No. 201020289589

  An object of the present invention is to provide a collecting device that can effectively extend the useful life of the filter and improve the applicability of the collecting device. Furthermore, the present invention provides a vacuum cleaner including the collection device described above. Thereby, the operating efficiency of the vacuum cleaner is improved.

  In order to achieve the above object, the present invention provides a dust suction tube, a first air intake channel, a first dust collection chamber, and a first dust collection chamber provided inside the first dust collection chamber. A collection device including a filter is provided. Further, the collecting device includes a second filter provided inside the first filter, a second air intake channel communicating the first filter and the second filter, and a second filter in the radial direction. And an air baffle that isolates one filter from the second filter. The second dust collection chamber is provided at the top of the first filter, and the air flow is from a dust suction tube, a first air intake channel, a first filter, a second air intake channel, a second A spiral structure that passes in the order of the dust collection chamber and the second filter, wherein at least one of the first air intake channel and the second air intake channel extends in the axial direction. Is done.

  Preferably, at least two second filters are equally spaced in the first filter.

  Preferably, each second filter corresponds to a corresponding air baffle, and at least two second filters and at least two air baffles are arranged at equal intervals in the first filter.

  Preferably, the seal plate is fixedly connected to the top end of the air baffle, and at least one of the air baffle and the seal plate communicates with the first filter and the second filter and is oblique. The start point and the end point of any one of the vent holes cut in the oblique direction are arranged along the radial direction or the axial direction with the first filter. Isolated from the second filter.

  Preferably, a plurality of obliquely cut vents are distributed at equal intervals along the circumferential direction of the air baffle, and the seal plate sinks toward the bottom end of the seal plate. It has a central recess.

  Preferably, both the first air intake channel and the second air intake channel are helical structures extending in the axial direction.

  Preferably, the collection device comprises at least two second intake channels, each of the at least two second air intake channels surrounding the bottom end of the second filter, and the second air intake The channel inlets are distributed at regular intervals along the circumferential direction of the second filter.

  Preferably, the collecting device comprises a tapered air guide cover provided at the top of the first filter, the outlet of the tapered air guide cover being in communication with the second dust collecting chamber. Yes.

  Furthermore, the present invention provides a vacuum cleaner provided with a power device, wherein the vacuum cleaner includes any one of the above-described collection devices, and air flows into the power device after passing through the collection device. Provide a vacuum cleaner.

  Preferably, the vacuum cleaner is a portable vacuum cleaner.

  The collection device according to the present invention includes a dust suction tube, a first air intake channel, a first dust collection chamber, and a first filter along a direction in which air flows when the collection device is operating. , A second air intake channel, a second dust collection chamber, and a second air filter. Because the power unit generates a negative pressure in the second filter, a group of small objects that need to be cleaned, such as dust, enters the collection device along the dust suction tube and flows into the first air intake channel To do. After being collected in the first dust collection chamber, a part of the micro object group is separated by the first filter together with the air flow, and stored in the first dust collection chamber. Small particles in the remaining micro-objects flow along the air flow into the second air intake chamber and the second dust collection chamber and are collected in the second dust collection chamber. By the separation by the second filter, the air flow flowing into the power unit is cleaned and the minute object group is eliminated, so that the service life of the power unit is extended. Since the air baffle is provided between the first filter and the second filter, the air flow flowing in from the first filter cannot flow into the second filter along the radial direction, After flowing axially into the second air intake channel and the second dust collection chamber, it can flow into the second filter. Furthermore, since at least one air intake channel of the first air intake chamber and the second air intake chamber has a spiral structure, dust flows after flowing into the air intake channel via the dust suction tube. It gradually moves upward along the spiral air intake channel. In the state where inertia due to high-speed rotation is applied after flowing out of the first air intake channel and / or the second air intake channel, the dust is collected in the first dust collection chamber and / or the second dust collection chamber. And continues to move along the spiral path, gradually moving away from the tail end of the air intake channel and thereby away from the filter. Therefore, since the possibility that dust adheres to the filter is reduced, the purpose of extending the useful life of the filter and the purpose of reducing the frequency of filter maintenance are realized, and the cost for cleaning is reduced. Furthermore, by keeping the filter clean for a long period of time, the power consumption of the vacuum cleaner is reduced, the noise generated by the vacuum cleaner is reduced, and the operating efficiency of the vacuum cleaner is improved. Furthermore, by providing a second filter inside the first filter, the dust cleaning efficiency and air flow cleanliness are further improved, the service life of the filter is further increased, the frequency of filter replacement is reduced, and collection The maintenance cost of the device is significantly reduced and the applicability of the collecting device is improved.

  In a preferred embodiment, at least two second filters are distributed at equal intervals in the first filter. Since the fractional area of the second filter increases as the number of second filters provided inside the first filter increases under the condition that the volume of the first filter is constant, the second filter Thus, the dust removal efficiency of the entire collecting device is improved. Furthermore, the dust separation efficiency is not only improved, but the overall volume of the collection device is kept to a minimum, meeting higher requirements for dust removal and improving the applicability of the collection device.

  In another preferred embodiment, a seal plate is fixedly connected to the top end of the air baffle. At least one of the seal plate and the air baffle includes an obliquely cut vent that communicates the first filter and the second filter. The start point and the end point of any one of the vents isolate the first filter from the second filter along the radial direction or the axial direction. The seal plate effectively prevents the air flow containing dust from flowing back directly into the second filter through the top portion of the air baffle, so that the load acting on the second filter is reduced, The service life of the second filter is extended. Further, since both the start point and the end point of the vent cut out in the oblique direction isolate the first filter from the second filter along the radial direction or the axial direction, the second air Dust that flows between the second filter and the air baffle through the intake channel can enter the second dust collection chamber through the obliquely cut vent, Dust in the dust collection chamber cannot flow into the second filter through the vent cut out in the oblique direction. Thereby, the load which acts on a 2nd filter is reduced and the dust separation efficiency of a collection apparatus is improved.

  Furthermore, the present invention provides a vacuum cleaner including the above collecting device based on the above collecting device. Since the collecting device has the above technical effect, the vacuum cleaner including the above collecting device also has a corresponding technical feature.

It is the schematic showing the structure of the collection apparatus of the typical vacuum cleaner in a prior art. It is the schematic showing the structure of the other typical collection apparatus in a prior art. It is the schematic showing the operation state of the collection apparatus shown in FIG. 1 is an exploded view schematically showing the structure of a first embodiment of a collecting apparatus according to the present invention. It is the schematic showing the structure of the 2nd Example of the collection apparatus in this invention. FIG. 6 is a schematic exploded view of the collection device depicted in FIG. 5. It is the schematic showing the structure of the 3rd Example of the collection apparatus in this invention. It is the schematic showing the structure of the 4th Example of the collection apparatus in this invention. FIG. 4 is an exploded view schematically showing an embodiment of a second filter and an air baffle in the present invention. 1 is a perspective view schematically showing the structure of a first embodiment of an air baffle and a seal plate in the present invention. FIG. 11 is a top view of the air baffle and seal plate shown in FIG. 10. It is a perspective view which represents roughly the structure of the 2nd Example of the air baffle and seal plate in this invention. It is a perspective view which represents roughly the structure of the 3rd Example of the air baffle and seal plate in this invention. It is an exploded view showing roughly the structure of one example of the 2nd filter and air baffle in the present invention. It is the schematic of the 5th Example of the collection apparatus in this invention. It is the schematic showing the structure of one Example of the 2nd filter in this invention.

  The technical idea of the present invention provides a collection device that can effectively extend the useful life of the filter, reduce the frequency of filter replacement, reduce the maintenance cost of the collection device, and improve the applicability of the collection device It is to be. Another technical idea of the present invention is to provide a vacuum cleaner including the above-described collecting device whose operating efficiency is improved.

  The terms “up” and “down” in this application are defined on the basis that the opening of the dust suction tube into which dust flows is located at the highest point. The axial direction described in the present application indicates the direction in which the dust suction tube extends, and is defined based on the height direction of the filter when the air channel rotates about the filter. The terms indicating direction and position in this application are not intended to limit the technical scope of this application.

  It should be noted that this application only takes a vacuum cleaner as an example to illustrate the collection device in the present invention. However, the vacuum cleaner is an application example of the collecting device according to the present invention, and the application example is not limited to the vacuum cleaner. The collection device in this application is applied when relatively high demands are made regarding air cleaning, such as air purifiers, air intake systems for air conditioners, air intake systems for motor vehicles and air intake systems for large manufacturing plants. can do. The spiral cyclone channel of the collector can collect a relatively large amount of dust in the dust collection chamber. The multi-filter configuration provided in multiplex significantly reduces the frequency of cleaning the filter screen, thus changing the conventional situation where filter screen replacement and maintenance is frequently required. In some cases, even zero-maintenance can be achieved, which significantly reduces the maintenance cost of the collector.

  In order for those skilled in the art to better understand the technical problems to be solved by the present application, the present invention will be described in detail with reference to the drawings and the following examples.

  FIG. 4 is an exploded schematic view of the structure of the first embodiment of the collecting device according to the present invention.

  The collecting device according to the present invention includes a dust suction tube 21 and a first air intake channel (not shown; A is the first air intake channel) along the direction of air flow when the vacuum cleaner is operating. A first dust collection chamber 22, a first filter 23, a second air intake channel (not shown; B is the inlet of the second air intake channel), 2 dust collecting chambers 24 and a second filter 25. The power unit generates a negative pressure in the second filter 25, so that a group of small objects (sundry) that need to be cleaned, such as dust, for example, reaches the collecting device along the dust suction tube 21. Into one air intake channel. After being collected in the first dust collection chamber 22, a part of the minute object group is filtered together with the air flow by the first filter 23 and stored in the first dust collection chamber 22. Small particles contained in the remaining portion of the microscopic object group flow into the second air intake channel and the second dust collection chamber 24 together with the air flow, and are collected in the second dust collection chamber 24. By the separation by the second filter 25, the air flow flowing into the power plant is reliably cleaned and impurities are removed, so that the useful life of the power plant is extended. Since the air baffle 26 is provided between the first filter 23 and the second filter 25, the air flowing out from the first filter 23 flows into the second filter 25 along the radial direction. Although not possible, it can flow along the axial direction into the second air intake channel and the second dust collection chamber 24 and then into the second filter 25.

  At least one of the first air intake channel and the second air intake channel is configured in a spiral shape. In this way, after the dust flows into the air intake channel via the dust suction tube 21, the dust gradually moves upward along the spiral air channel, and the dust moves to the first air intake channel and / or the first air intake channel. After flowing out of the two air intake channels, the dust follows a spiral path in the first dust collection chamber 22 and / or the second dust collection chamber 24 under the inertial force resulting from the high speed rotation. It can continue to move and has a tendency to gradually move away from the end of the air intake channel away from the first filter and the second filter. Therefore, the possibility that dust adheres to the filter is reduced, and the purpose of extending the useful life of the filter and the purpose of reducing the frequency of filter maintenance are realized. Furthermore, by maintaining the filter in a clean state for a long time, the power consumption of the vacuum cleaner is reduced, the noise of the vacuum cleaner is reduced, and the operation efficiency of the vacuum cleaner is improved. On the other hand, by providing the second filter 25 inside the first filter 23, the dust cleaning efficiency is improved, the air flow cleanliness is improved, the service life of the filter is further extended, and the filter replacement frequency is increased. Reduced, the maintenance cost of the collector is significantly reduced, and the applicability of the collector is improved.

  Further, the collection device according to the present invention may include a third filter having a structure similar to that of the second filter 25. The third filter is provided inside the second filter 25. The second filter 25 and the third filter are in communication via a third air intake channel that may be configured in a spiral. On the other hand, a radial air isolation baffle is provided between the second filter 25 and the third filter, and a third dust collection chamber is provided at the upper end of the second filter 25. After the air flow has passed through the dust suction tube 21, the second air intake channel, the second filter 25, the third air intake channel, the third dust collection chamber, and the third filter in order, Flows into the power plant. In this way, the air flowing into the power unit is separated by the three-layer filter, and thus has a high cleanliness.

  FIG. 5 is a schematic diagram showing the structure of the second embodiment of the collecting apparatus according to the present invention. The direction indicated by the arrow in FIG. 5 is the direction in which the airflow flows. FIG. 6 is a schematic exploded view of the collection device shown in FIG.

  In the second embodiment, the collection device according to the present invention includes a third filter 31. The third filter 31 is provided at the center of several second filters 25, and the second air baffle 32 is provided outside the third filter 31. The third dust collection chamber 33 is provided on the top of the third filter 31. After the air flow has flowed through the second filter 25, the air flow enters the third filter 31 disposed in the center via the third air intake channel. Since the air flow flows out from the third filter 31 and then flows into the power unit, separation by three layers is realized.

  In addition, the collection device according to the present invention may include a fourth filter and even a fifth filter provided in multiple or in parallel. The specific arrangement of such a collecting device is not particularly described in this specification.

  FIG. 7 is a schematic diagram showing the structure of the third embodiment of the collecting apparatus according to the present invention. The direction indicated by the arrow in FIG. 7 is the direction in which the airflow flows when the collecting device is operating.

  In the third embodiment, both the first air intake channel and the second air intake channel of the collecting device according to the present invention are configured in a spiral structure extending in the axial direction. As shown in FIG. 7, when both the first air intake channel and the second air intake channel are configured in a spiral structure, the spirally flowing air flow is the first dust collection chamber 22. And the second dust collection chamber 24, thereby moving the dust away from the bottom portions of the first dust collection chamber 22 and the second dust collection chamber 24. 23 and the possibility of sticking to the surface of the second filter 25 is reduced. Furthermore, the load acting on the first filter 23 and the second filter 25 is reduced, the service life of the first filter 23 and the second filter 25 is extended, the frequency of replacement of these filters is reduced, and Dust-removal efficiency is improved.

  FIG. 8 is a schematic view of the structure of the fourth embodiment of the collecting apparatus according to the present invention. In FIG. 8, the direction indicated by the arrow is the direction in which the airflow flows when the collecting device is operating.

  In the fourth embodiment, at least two second filters 25 are evenly distributed in the first filter 23 (in the second embodiment shown in FIGS. 5 and 6, seven A second filter 25 is provided). Under the condition that the volume of the first filter 23 is constant, the filtering region of the second filter 25 is increased by increasing the number of the second filters 25 provided inside the first filter 23. Since it increases, the filtering efficiency of the second filter 25 is improved, which in turn improves the dust removal efficiency of the entire collection device. On the other hand, based on the improvement in dust removal efficiency, the volume of the entire collection device is kept small, high demands on dust removal are satisfied, and the applicability of the collection device is improved.

  FIG. 9 is a schematic exploded view of one embodiment of the second filter and air baffle in the present invention.

  In another embodiment, each second filter 25 corresponds to a corresponding air baffle 26, and at least two second filters 25 and at least two air baffles 26 are provided. The air baffles 26 are evenly distributed in the second filter 25. A plurality of airflows flowing in a spiral form are generated inside the first filter 23, thereby further improving the dust removal efficiency and improving the dust removal area of the second filter 25.

  Therefore, the collection device according to the present invention includes a case where one second filter 25 is provided and a case where a plurality of second filters 25 are provided. Similarly, the collection device according to the present invention includes a case where one third filter 31 is provided and a case where a plurality of third filters 31 are provided. When one second filter 25 is provided, a structure including one first filter 23, one second filter 25, and one third filter 31 is formed. One third filter 31 may be provided. Furthermore, the plurality of third filters 31 may be evenly distributed and arranged inside the second filter 25. When a plurality of second filters 25 are provided, a plurality of third filters 31 may be provided. In this case, each of the third filters 31 corresponds to each of the second filters 25 and is provided inside each of the second filters 25. On the other hand, when a plurality of second filters 25 are provided, one third filter 31 is provided inside the second filter 25 in the immediate vicinity of the air intake orifice of the power plant, or Since it is provided in the center of the second filter 25 as in the second embodiment, the air flow flowing into the power unit is the air separated by the third filter 31, and the air flow is cleaned. It is ensured that the degree is improved.

  FIG. 10 is a perspective view schematically showing the structure of the first embodiment of the air baffle and the seal plate in the present invention. FIG. 11 is a top view of the air baffle and seal plate shown in FIG. FIG. 12 is a perspective view schematically showing the structure of the second embodiment of the air baffle and the seal plate in the present invention.

  In the fourth embodiment, the seal plate 27 is fixedly connected to the top end of the air baffle 26. At least one of the seal plate 27 and the air baffle 26 communicates the first filter 23 and the second filter 25 and has a vent hole cut out in an oblique direction. The start point and the end point of any one of the vent holes cut out in the oblique direction isolate the first filter 23 from the second filter 25 along the radial direction or the axial direction. . The seal plate 27 effectively prevents the air flow containing dust from flowing back directly into the second filter 25 through the top portion of the air baffle 26, and the load acting on the second filter 25 is prevented. This can reduce the service life of the second filter 25. On the other hand, the first filter 23 is isolated from the second filter 25 along the radial direction or the axial direction in both the start point and the end point of the vent hole cut in the oblique direction, so that the second air Dust flowing between the second filter 25 and the air baffle 26 through the intake channel can flow into the second dust collection chamber 24 through the vent cut in the oblique direction. The dust in the second dust collection chamber 24 cannot flow into the second filter 25 through the vent hole cut in the oblique direction. Therefore, the load acting on the second filter 25 is further reduced, and the dust removal efficiency of the collecting device is improved.

  The seal plate 27 may not be provided. That is, a through-hole may be formed at the top end of the air baffle 26. Even with such a configuration, the object of the present invention can be achieved and belongs to the technical scope of the present invention.

  FIG. 13 is a perspective view schematically showing the structure of the third embodiment of the air baffle and the seal plate according to the present invention.

  In the third embodiment, the air baffle 26 according to the present invention is formed with a vent cut out in an oblique direction. A plurality of obliquely cut vents may be arranged at equal intervals along the circumferential direction of the air baffle 26. The seal plate 27 is formed with a central recess that sinks toward the bottom end of the seal plate. Dust flowing between the air baffle 26 and the second filter 25 through the second air intake channel flows into the air baffle 26 from the vent hole cut in the oblique direction, while the seal plate 27 The central recess collects the dust collected in the second dust collection chamber 24 by collecting the dust in the second dust collection chamber 24, and the dust is stored in the second dust collection chamber 24. The possibility of deposition can be reduced, thereby reducing secondary contamination. Especially when the dust suction tube 21 is facing upward, for example, the collecting device is applied to a portable vacuum cleaner to suck dust adhering to the ceiling, window curtain, or other relatively high position. In this case, since the central recess of the seal plate 27 effectively collects the collected dust, the dust is prevented from flowing into the power unit, thereby improving the dust removal efficiency of the vacuum cleaner. Further improvement.

  On the condition that the vent cut out in the oblique direction allows the first filter 23 and the second filter 25 to communicate with each other, the vent cut out in the oblique direction is the seal plate 27 or the air baffle 26. Or may be formed on both the seal plate 27 and the air baffle 26. On the other hand, the first filter 23 is isolated from the second filter 25 along the radial direction or the axial direction at both the start point and the end point of the vent hole cut in the oblique direction. As an example of the seal plate 27, the seal plate 27 includes a main portion and a shield portion (as shown in FIG. 10), and the main portion is provided at a right angle to the air baffle 26. May be fixedly connected to the asserted portion at a predetermined angle. Some vents are provided in the main part, and the shield part closes the vents along the axial direction so as to form an obliquely cut vent. Further, the seal plate 27 is configured as shown in FIG. Since the seal plate 27 is cut away in an oblique direction with respect to the thickness direction of the seal plate, dust cannot directly flow into the air baffle 26 along the axial direction. The vent hole cut in the oblique direction is provided in the air baffle 26 in the same manner as the vent hole cut in the oblique direction provided in the seal plate 27. In this case, the vent cut out in the oblique direction isolates the first filter 23 from the second filter 25 along the radial direction. Such a structure is not described in detail in this specification.

  FIG. 14 is an exploded view schematically showing one embodiment of the second filter and the air baffle in the present invention.

  In a preferred embodiment, a plurality of second air intake channels are provided, each of the second air intake channels surrounding the bottom end of the second filter 25, and the inlet of the second air intake channel is The second filters 25 are uniformly distributed along the circumferential direction. As shown in FIG. 14, two spiral protrusions 34 are formed on the bottom portion of the second filter 25, and the two spiral protrusions 34 surround the second filter 25. Cooperate with air baffle 26 to form a spiral air intake channel. The starting points of the two helical air intake channels are the inlets of the second air intake channel, and the two starting points are separated by a fixed interval. In particular, the two starting points are arranged symmetrically with respect to the second filter 25. The end point of the two spiral air intake channels is the bottom end of the second filter 25. As the quantity of the second air intake channels is increased, the air flow rate per unit time in the second filter 25 is increased, and the operation efficiency and applicability of the collecting device are improved. On the other hand, the inlets of the second air intake channels that are evenly distributed along the circumferential direction of the second filter 25 maintain a uniform supply of airflow into the collection device, so that the airflow More stable.

  Further, the second air intake channel shown in FIG. 14 is formed by the cooperation of the spiral protrusion 34 and the air baffle 26 shown in FIG. Further, the second air intake channel is formed by a groove disposed in the bottom portion of the second filter 25. That is, the helical channel is formed in the solid body of the bottom portion of the second filter 25. This meets the requirements of the present invention and falls within the technical scope of the present invention. However, the second air intake channel depicted in FIG. 14 has the advantage of being able to reduce the manufacturing cost of the collection device because it is a simple structure and can be easily machined.

  FIG. 15 is a schematic diagram showing the structure of a fifth embodiment of the collecting apparatus according to the present invention. The direction indicated by the arrow in FIG. 15 is the direction in which the airflow flows when the collecting device is operating.

  In the fifth embodiment, the collection device according to the present invention includes a tapered air guide cover provided at the top end of the first filter 23, and the outlet of the tapered air guide cover is the second outlet. In communication with the dust collection chamber 24. When the collector is operating, after the air flow passes through the dust suction tube 21, the first air intake channel, the first filter 23, the second air intake channel, and the tapered air guide cover , Flows into the second dust collection chamber 24 and the second filter 25. That is, the air flowing out of the second air intake channel is formed into a strong spiral state by first passing through the tapered air guide cover, so that as much dust as possible in the spiral air stream is formed. Moves away from the second filter 25. Thereby, the load of the 2nd filter 25 is reduced, the useful life of the 2nd filter 25 is extended, the replacement frequency of the 2nd filter 25 is reduced, and the maintenance cost of a collection apparatus is reduced.

  FIG. 16 is a schematic diagram showing the structure of one embodiment of the second filter according to the present invention.

  In one embodiment, the separation opening of the second filter 25 in the present invention is a strip-shaped opening. After separation by the first filter 23, the separation of most of the relatively large contaminants contained in the dust, such as hair, has already been completed and flows into the second filter 25. Is rare. Compared to dot-shaped openings, strip-shaped openings can be machined in an easy process, are low in cost, and can be applied to many materials. The cost can be further reduced. The first filter 23 and the third filter 31 may use a filter having a strip-shaped opening.

  Furthermore, this invention provides the vacuum cleaner containing the above-mentioned collection apparatus other than the above-mentioned collection apparatus. The power device of the vacuum cleaner is connected to the outlet end of the second filter 25 of the collecting device. When the power unit is operating, a negative pressure is generated in the collecting device, which causes dust to flow into the first dust collecting chamber 22 and the second dust collecting chamber 24, which is referred to as dust removal and cleaning. A technical effect can be obtained. Since the structure of the other part of the vacuum cleaner is the same as that of the prior art, it will not be described in detail in this specification.

  In particular, when the above-described vacuum cleaner is a portable vacuum cleaner, the vacuum cleaner can be widely used in modern life due to its lightweight and portable form with good dust removal effect. it can. Portable vacuum cleaners have a good dust removal effect especially for small corners of precision electronic equipment such as motor vehicles and computers. Further, when the vacuum cleaner in the present invention is a large household horizontal vacuum cleaner or an industrial vacuum cleaner, the same technical effect is exhibited by the collecting device in the present invention applied to these vacuum cleaners. Can be made. This also belongs to the technical scope of the present invention.

  The collecting device in the present invention and the vacuum cleaner including the collecting device are as described above. This document illustrates the principles and embodiments of the present invention by providing specific examples. The description of the embodiment should be used only for understanding the technique and technical idea of the present invention, and even if those skilled in the art make changes and improvements to the present invention, the technical scope of the present invention will be described. It should be noted that it does not deviate from. It should be recognized that such changes and improvements are within the protection scope of the present invention.

DESCRIPTION OF SYMBOLS 21 Dust suction tube 22 1st dust collection chamber 23 1st filter 24 2nd dust collection chamber 25 2nd filter 26 Air baffle 27 Seal plate 31 3rd filter 32 2nd air baffle 33 3rd dust Collection chamber 34 Spiral projection

Claims (10)

In a collection device comprising a dust suction tube, a first air intake channel, a first dust collection chamber, and a first filter disposed in the first dust collection chamber,
The collector is
A second filter provided inside the first filter;
A second air intake channel in communication with the first filter and the second filter;
An air baffle that isolates the first filter from the second filter in a radial direction;
With
A second dust collection chamber is provided at the top end of the first filter;
An air flow passes through the dust suction tube, the first air intake channel, the first filter, the second air intake channel, the second dust collection chamber, and the second filter;
The collection device according to claim 1, wherein at least one of the first air intake channel and the second air intake channel has a spiral structure extending in an axial direction.   The collection device according to claim 1, wherein at least two of the second filters are arranged at equal intervals in the first filter. Each of the second filters corresponds to a corresponding air baffle;
The collection device according to claim 1, wherein at least two of the second filters and at least two of the air baffles are arranged in the first filter at equal intervals. A seal plate is fixedly connected to the top end of the air baffle;
At least one of the air baffle and the seal plate includes a vent hole that communicates with the first filter and the second filter and is cut in an oblique direction.
The start point and the end point of any one of the vent holes cut in the oblique direction are along the radial direction or the axial direction, and the first filter is isolated from the second filter. The collecting apparatus according to claim 1, wherein A plurality of the vent holes cut in the oblique direction are arranged at regular intervals along the circumferential direction of the air baffle,
The collecting device according to claim 4, wherein the seal plate includes a central recess that sinks toward a bottom end of the seal plate.   6. The first air intake channel and the second air intake channel both have a spiral structure extending in an axial direction. Collection device. The collection device comprises at least two of the second acquisition channels;
Each of the at least two second air intake channels surrounds a bottom end of the second filter;
The collection device according to any one of claims 1 to 5, wherein the inlets of the second air intake channels are distributed at regular intervals along the circumferential direction of the second filter. . The collecting device includes a tapered air guide cover provided on a top portion of the first filter;
The collection device according to any one of claims 1 to 5, wherein an outlet of the tapered air guide cover communicates with the second dust collection chamber. In a vacuum cleaner equipped with a power unit,
The vacuum cleaner includes the collection device according to any one of claims 1 to 8,
A vacuum cleaner characterized in that air flows into the power unit after passing through the collecting device.   The vacuum cleaner according to claim 9, wherein the vacuum cleaner is a portable vacuum cleaner.

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