JP2010063661A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of preventing impairment of the suction force caused by flying of dust, and capable of reducing the frequency of discharge of captured dust. <P>SOLUTION: A dust box 6 disposed on the upstream side of an electric blower 5 for generating sucking air flow is composed of a cyclone chamber 15a composed of a mesh filter 17 with a number of minute through holes, a separating portion 15 with a pleated filter 18 covering the outer surface of the cyclone chamber, a dust collection portion 16 for capturing the dust separated by the separating portion 15, and a bottom lid 11 covering an opening 8 under the dust collection portion 16. Flying of the dust captured in a first dust collection chamber 16a up to the cyclone chamber 15a can be prevented, and the suction force can be sustained by sucking the dust from through holes 22a formed between the lower part of a separating wall 22 of the dust collection portion 16 and the bottom lid 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner having a configuration of a cyclone dust collecting unit that swirls intake air to separate and accumulate dust by centrifugal force and has a detachable dust box.

Conventional vacuum cleaners having this type of cyclone dust collection unit are designed to dispose of dust that has been absorbed and separated by the cyclone dust collection unit under the influence of the swirling airflow in the cyclone dust collection unit. The structure of depositing was common (see, for example, Patent Document 1).
JP 2000-342492 A

  However, in the conventional vacuum cleaner configured to accumulate dust below the dust collecting part while being affected by the swirling airflow in the cyclone dust collecting part, the conventional dust collected and separated by the cyclone dust collecting part is compared. There is a problem that the suction force decreases because coarse dust with a light target weight rises and blocks the filter surface.

  In addition, due to the structure of natural accumulation under the influence of the swirling airflow in the cyclone dust collection section, the dust collection chamber is difficult to be in a dense state, and it is filled with less dust than the dust collection chamber capacity. There was a problem that dust had to be discharged.

  The present invention solves the above-described conventional problems, and it does not rise even with relatively light weight of coarse dust, is stored in the dust collection chamber, does not block the filtration filter surface, and maintains the suction force. It is an object of the present invention to provide an easy-to-use vacuum cleaner that can eliminate the inconvenience of frequently discharging dust.

  In order to solve the above-described conventional problems, an electric vacuum cleaner of the present invention includes an electric blower that generates suction air, a dust box that communicates with the electric blower and collects dust, and a suction that communicates with the dust box and sucks dust. The dust box includes a separation unit having a cyclone chamber that generates a swirl flow by introducing suction air, a dust collection unit that communicates with the cyclone chamber and accumulates dust, and the dust collection unit A separation wall that forms a dust collection chamber and a bottom lid that opens and closes an opening provided at the lower end of the separation wall, and forms a communication hole between the lower end of the separation wall and the bottom lid, The communication hole is provided with a communication path that communicates with the suction path of the electric blower. The collected light dust does not rise and is stored in the dust collection chamber to block the filter surface. Has suction power It is those that can be.

  The vacuum cleaner of the present invention does not block the filtration filter surface in the cyclone dust collecting part, maintains the suction force, compresses the collected dust, and eliminates the trouble of frequently discharging the dust. It is excellent.

  A first invention includes an electric blower that emits suction air, a dust box that communicates with the electric blower and collects dust, and a suction tool that communicates with the dust box and sucks dust. Separation part provided with a cyclone chamber that generates a swirl flow when introduced, a dust collection part that communicates with the cyclone chamber and accumulates dust, a separation wall that forms a dust collection chamber in the dust collection part, and the separation A bottom cover that opens and closes an opening provided at a lower end of the wall, and forms a communication hole between the lower end of the separation wall and the bottom cover, and communicates the communication hole with a suction path of the electric blower It is characterized by the provision of a communication passage that does not rise even with the collected dust of relatively light weight, and it can be stored in the dust collection chamber and the suction filter can be maintained without blocking the filtration filter surface. is there.

  In a second aspect of the invention, particularly in the first aspect of the invention, the separation part is composed of a substantially cylindrical mesh filter that forms a cyclone chamber, the first filter that collects coarse dust, and the fine filter that has passed through the first filter. A second filter for collecting dust is provided, and the dust collecting unit collects the first dust collecting chamber for collecting the coarse dust separated by the first filter and the fine dust separated by the second filter. A second dust collection chamber, wherein the first dust collection chamber and the second dust collection chamber are partitioned by a separation wall, and the collected dust does not rise, and is contained in the dust collection chamber. It can be stored and the suction power can be maintained.

  According to a third aspect of the present invention, particularly in the second aspect of the present invention, the separation wall includes two separation walls, a comb-shaped separation wall and a flat wall-shaped separation wall provided outside the comb-shaped separation wall. Is formed by the comb-shaped separation wall and the bottom lid, and the communication path communicates the space formed by the comb-shaped separation wall and the flat-shaped separation wall and the upstream side of the second filter. Therefore, the swirling flow of the suction air in the dust collecting chamber can be made uniform between the two separation walls of the comb shape and the flat shape.

  In a fourth aspect of the invention, in particular, in the third aspect of the invention, a packing is provided at the joint between the bottom lid and the separation wall, and the packing is provided with a protrusion that contacts the outer periphery of the flat shape separation wall. Even if distortion or the like occurs in the packing, the secrecy between the flat-shaped separation wall and the packing can be secured, and a stable bottoming swirl flow can be formed.

  According to a fifth invention, in particular, in any one of the first to fourth inventions, a convex obstacle wall for suppressing swirling flow is provided in the dust collecting chamber, and swirling flow in the dust collecting chamber is suppressed. Some can make dust compression possible.

  In a sixth aspect of the invention, in particular, in any one of the first to fifth aspects of the invention, the bottom cover is provided with a dividing wall that divides the dust collecting chamber, and the swirling flow in the dust collecting chamber is suppressed and dust compression is performed. There is something that can be made possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
The vacuum cleaner in the 1st Embodiment of this invention is demonstrated using FIGS.

  FIG. 1 is a plan view and a side view of a vacuum cleaner main body in the present embodiment. 2 is a central cross-sectional view of the main body of the vacuum cleaner, FIG. 3 is a central cross-sectional view of the dust box and details of each part, which is a feature of the present invention, FIG. 4 is a plan view of the cyclone chamber, and FIG. It is the sectional drawing which looked, and the cross-sectional schematic of a dust collection chamber. FIG. 6 is a cross-sectional view and a plan view clearly showing a configuration for collecting dust in the dust box.

  1 and 2, reference numeral 1 denotes an electric vacuum cleaner main body (hereinafter referred to as a main body 1), and a traveling wheel 2 is provided at a lower portion of the main body 1. A power cord 3 is arranged at the upper stage of the traveling wheel 2, and an intake port 4 for connecting a hose (not shown) is connected to the upper part of the power cord 3 (upper part of the main body) and dust is sucked to the rear. An electric blower 5 is disposed, and a dust box 6 for accommodating dust is disposed between the air inlet 4 and the electric blower 5. The dust box 6 is detachable from the main body 1.

  In the operation according to the above configuration, dust sucked by the electric blower 5 is accommodated in the dust box 6. The stored dust can be discharged and reused by removing the dust box 6 from the main body 1 and opening the bottom lid 11.

  Next, the structure of the dust box 6 that is a feature of the present invention will be described with reference to FIGS.

  The dust box 6 is formed with a lid unit 9 having a handle 7 at the top, a separation unit 15 that separates dust under the lid unit 9, and a dust collection unit 16 that accommodates dust is disposed below the separation unit 15. The bottom cover 11 is provided with an openable / closable bottom cover 11 covering the opening 8 for discharging the dust of the dust collecting section 16.

  The separation unit 15 includes a cyclone chamber 15a in which a mesh filter 17 having a large number of fine through holes is formed in a cylindrical shape, and a pleat filter 18 provided on the outer periphery of the cyclone chamber 15a. The outside communicates with the suction port of the electric blower 5.

  The dust collection unit 16 includes a first dust collection chamber 16a that communicates with the inside of the mesh filter 17, and a second dust collection chamber 16b that communicates between the mesh filter 17 and the pleat filter 18, that is, the upstream side of the pleat filter 18. Are separated by a separation wall 22.

  Furthermore, the lower end portion of the separation wall 22 has comb-like irregularities, and a communication hole 22a that communicates between the first dust collection chamber 16a and the second dust collection chamber 16b when the bottom lid 11 is closed. It is configured to be formed between the tight packing 12 attached to the bottom lid 11 and the separation wall 22.

  Further, in front of the dust collection chamber 16, the air passage 14 for communicating the suction air from the intake port 4 to the upper cyclone chamber protrudes to form a convex obstacle wall 23, and in the center of the bottom lid 11. A flat partition wall 24 that divides the first dust collecting chamber 16a into the left and right is provided.

  About the vacuum cleaner in this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below using FIG.

  The air flow A containing dust by the operation of the electric blower 5 is sucked into the dust box 6 from the intake port 4 and flows in the tangential direction by the lid unit 9 disposed on the upper portion of the dust box 6, and swirls in the cyclone chamber 15a. Coarse dust is separated by the mesh filter 17 and the separated coarse dust is blown off by a swirling flow and collected in the first dust collecting chamber 16a. On the other hand, the suction air containing fine dust that has passed through the mesh filter 17 is sucked into the electric blower 5 after the fine dust is separated by the pleat filter 18.

  The fine dust separated by the pleat filter 18 is collected in the second dust collection chamber 16b, and the dust attached to the surface of the pleat filter 18 is removed by a separately provided dust removing mechanism (not shown), Similarly, it is configured to be collected in the second dust collecting chamber 16b, and the opening portion is opened by the opening operation of the bottom lid 11 together with the coarse dust separated in the cyclone chamber 15a and collected in the first dust collecting chamber 16a. When 8 is opened, it is discharged out of the dust box 6. The bottom lid 11 is locked to the dust collecting portion 16 with a hook 13.

  Here, the swirl flow B reaching the first dust collecting chamber 16a is sucked into the communication hole 22a formed at the lowermost part of the first dust collecting chamber 16a, so that it can be prevented from rising, and the mesh filter 17 is clogged. It is possible to reliably accumulate dust while suppressing the above. Hereinafter, the flow of suction air sucked into the communication hole at the bottom of the dust collection chamber 16 is referred to as bottom suction flow.

  Further, by dividing the first dust collecting chamber 16a by the convex obstacle wall 23 and the dividing wall 24 disposed in the center of the bottom lid 11, the swirl flow B generated in the cyclone chamber 15a is first collected. When reaching the dust chamber 16a, it collides with the convex obstacle wall 23 and the dividing wall 24 arranged in the center of the bottom lid 11, and the swirling is suppressed, and as shown in FIG. First, it is accumulated from one side of 23, that is, the side where the swirl flow B collides (A), then accumulated at the position of B, and then successively accumulated until reaching the other side of the convex obstacle wall 23.

  During the accumulation, the dust is compressed and collected efficiently, so that a larger amount of dust can be accumulated than in the past.

(Embodiment 2)
The vacuum cleaner in the 2nd Embodiment of this invention is demonstrated using FIGS.

  FIG. 7 is a central sectional view and a partial detail view of the dust box according to the second embodiment, FIG. 8 is a perspective view of the main part of the dust box with the bottom lid opened, and FIG. 9 is a diagram of collecting dust in the dust box. It is the figure which showed the structure to do. In addition, the thing of the same code | symbol as Embodiment 1 has the same structure, and abbreviate | omits description.

  In the present embodiment, the lower end portion of the separation wall 22 is divided into two separation walls to form a double wall, the inner side is a comb-shaped separation wall 20 in which irregularities are formed in a comb shape, and the outer side is the first. The flat separation wall 21 restricts the communication between the dust collection chamber 16a and the second dust collection chamber 16b. Further, the space formed by the comb-shaped separation wall 20 and the flat-shaped separation wall 21 communicates with the upstream side of the pleat filter 18 as a communication path 10.

  Further, the bottom cover 11 is provided with a dust collecting portion 16 of the dust box 6 and a tight packing 12 for improving the airtightness of the bottom cover 11, and the tight packing 12 has a protrusion in contact with the outer peripheral side of the flat separation wall 21. A body 25 is provided.

  About the vacuum cleaner in this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below using FIG.

  The air flow A containing dust due to the operation of the electric blower 5 is sucked into the dust box 6 from the intake port 4 and flows in the tangential direction by the lid unit 9 disposed on the upper portion of the dust box 6 to generate the swirl flow B. .

  Next, in the substantially cylindrical cyclone chamber 15a disposed in the center of the dust box 6, the coarse dust is separated from the air flow containing the dust by the swirling flow B, and the separated dust is disposed in the lower portion. The dust is collected in the dust collection chamber 16a.

  Further, the swirl flow B is sucked from the communication hole 20a formed by the comb-shaped separation wall 20 formed at the lower end of the separation wall 22 constituting the first dust collecting chamber 16a, the bottom lid 11 and the tight packing 12. Due to this bottom suction flow, relatively light dust is continuously stored in the first dust collecting chamber 16a, and the uneven comb-shaped separation wall 20 and the flat shape separation wall 21 arranged in the dust collecting chamber 16 are provided. The bottom suction air is made uniform between the two separation walls and the bottom lid 11, so that the rising can be prevented.

  Further, the tight packing 12 that improves the airtightness of the flat shape separation wall 21 and the bottom lid 11 is provided with a protrusion 25 that contacts the outer periphery of the flat shape separation wall 21, so that the tight packing 12 can be molded. The contact state can be secured regardless of the generated strain and the like, and it is possible to generate a stable swirling flow necessary for the bottom suction structure.

  As described above, the vacuum cleaner according to the present invention improves the suction force sustainability of the vacuum cleaner having the configuration of the cyclone dust collecting unit that rotates and sucks the intake air and separates and accumulates the dust by centrifugal force, and collects dust. This technology is useful for reducing the number of discharges (trash disposal).

(A) The top view of the vacuum cleaner main body in Embodiment 1 of this invention, (b) The side view of the same vacuum cleaner main body Central sectional view of the vacuum cleaner body (A) Central sectional view of the dust box, (b) Detailed view of part A of (a), (c) View of arrow B of (b) Top view of the cyclone chamber of the dust box (A) Sectional view seen from the motor side of the dust box, (b) Schematic diagram of the BB section of (a) (A) Schematic cross-sectional view clearly showing the configuration for collecting dust in the dust box (b) Schematic plan view of the same (A) Central sectional view of the dust box in the second embodiment of the present invention, (b) Detailed view of part A of (a) In this dust box, a perspective view showing the main part with the bottom lid open Cross-sectional view clearly showing the configuration for collecting dust in the dust box

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner main body 5 Electric blower 6 Dust box 8 Opening part 10 Communication path 11 Bottom cover 12 Tight packing 15 Separation part 15a Cyclone chamber 16 Dust collection part 16a 1st dust collection room (dust collection room)
16b Second dust collection chamber (dust collection chamber)
17 Mesh filter (first filter)
18 Pleated filter (second filter)
20 Comb-shaped separation wall 20a, 22a Communication hole 21 Flat shape separation wall 22 Separation wall 23 Convex obstacle wall 24 Dividing wall 25 Projection body

Claims (6)

An electric blower that emits suction air, a dust box that communicates with the electric blower and collects dust, and a suction tool that communicates with the dust box and sucks dust, and the dust box has a swirl flow introduced with suction air. A separation unit provided with a cyclone chamber that is generated; a dust collection unit for communicating dust with the cyclone chamber; a separation wall forming a dust collection chamber in the dust collection unit; and a lower end of the separation wall. A bottom cover that covers the opening so as to be freely opened and closed, and a communication hole is formed between the lower end of the separation wall and the bottom cover, and a communication path that connects the communication hole to the suction path of the electric blower is provided. A vacuum cleaner characterized by that. The separation unit includes a first filter that is configured by a substantially cylindrical mesh filter forming a cyclone chamber and collects coarse dust, and a second filter that collects fine dust that has passed through the first filter. The portion includes a first dust collecting chamber for collecting the coarse dust separated by the first filter and a second dust collecting chamber for collecting the fine dust separated by the second filter. The vacuum cleaner according to claim 1, wherein the dust collection chamber and the second dust collection chamber are partitioned by a separation wall. The separation wall is composed of two separation walls, a comb-shaped separation wall and a flat wall-shaped separation wall provided outside the comb-shaped separation, and a communication hole is formed by the comb-shaped separation wall and the bottom lid The vacuum cleaner according to claim 2, wherein the communication path communicates a space formed by the comb-shaped separation wall and the flat-shaped separation wall with an upstream side of the second filter. The electric vacuum cleaner according to claim 3, wherein a packing is provided at a joint between the bottom lid and the separation wall, and the packing is provided with a protrusion that contacts the outer periphery of the flat separation wall. The vacuum cleaner according to any one of claims 1 to 4, wherein a convex obstacle wall for suppressing swirling flow is disposed in the dust collection chamber. The electric vacuum cleaner according to any one of claims 1 to 5, wherein a dividing wall for dividing the dust collecting chamber is disposed on the bottom lid.

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