JP2006247094A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner where high sucking performance and softening of exhaust air (lowering of an exhaustion speed) are consistent with each other. <P>SOLUTION: The vacuum cleaner is provided with: a main body incorporating an electric blower; and an exhaustion part consisting of an exhaust flow regulating plate 16 having a plurality of holes and an exhaustion port 15 formed at the outer shell of the main body for discharging the exhaust of the blower. The exhaust flow regulating plate 16 is provided adjacent to the inside of the exhaustion port 15. By making the exhaust pass through the plurality of holes formed at the exhaust flow regulating plate, the variance of the exhaustion speed discharged from the exhaustion port 15 can be suppressed. It is also possible to suppress flying up of dust on a surface to be cleaned by reducing the exhaustion speed by distributed exhaustion by uniforming the exhaustion speed of the whole of the exhaustion port. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vacuum cleaner that achieves both high suction performance and softening of exhaust (reducing exhaust wind speed).

A conventional vacuum cleaner has a dust collection chamber in the front, an electric blower chamber containing an electric blower in the rear, and an exhaust port in the rear. The front of the electric blower communicates with the dust collection chamber, and the intake air of the electric blower passes through the dust collection chamber, passes through the electric blower after collecting the dust, and is exhausted from the exhaust port to the atmosphere as exhaust. Conventionally, in this type of exhaust port, consideration has been given to suppress the dust rising on the surface to be cleaned by reducing the exhaust air speed. As a specific means, there is one in which the entire exhaust port is covered with a spun cloth (for example, see Patent Document 1). In some cases, an exhaust port is formed by opening a plurality of holes of about φ2 mm in the outer shell of the main body (for example, see Patent Document 2).
Japanese Patent No. 3327293 JP 2002-315697 A

  However, in the configuration in which the exhaust port is covered with the spun cloth as described above, the spun cloth needs to be welded to the frame member that forms the exhaust port, or the frame member needs to be composed of two parts and sandwiched and fixed. There existed a subject that it became expensive and the spun cloth was easy to get dirty. In addition, in the structure in which a plurality of holes are formed in the outer shell of the main body, it is necessary to increase the thickness of the outer shell of the exhaust port portion in order to ensure the strength of the outer shell, and the outer shell area required to form the exhaust port is large. There was a problem of becoming larger.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a vacuum cleaner that achieves both high suction performance and softening of exhaust (reducing exhaust air speed).

  In order to solve the above-mentioned conventional problems, the present invention comprises a main body incorporating an electric blower, an exhaust air rectifying plate having a plurality of holes, and an exhaust port provided in the outer wall of the main body, and exhausts the exhaust of the electric blower. The exhaust rectifying plate is provided adjacent to the inside of the exhaust port, and exhaust gas is discharged from the exhaust port by passing the exhaust through a plurality of holes that are uniformly opened in the exhaust rectifying plate. Variation in exhaust wind speed can be suppressed. By making the exhaust air speed at the entire exhaust port uniform and exhausting in a distributed manner, the exhaust air speed can be reduced and the rise of dust on the surface to be cleaned can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner which made compatible high suction performance and softening of exhaust_gas | exhaustion (it softens exhaust wind speed) is realizable.

  1st invention is equipped with the main body which incorporated the electric blower, the exhaust current board which has a plurality of holes, and the exhaust part provided in the outline of the main part, and the exhaust part which exhausts the exhaust of the electric blower, The exhaust air rectifying plate is provided adjacent to the inside of the exhaust air outlet, and the exhaust air is allowed to pass through a plurality of holes that are uniformly opened in the exhaust air rectifying plate, thereby suppressing variations in the exhaust air velocity discharged from the exhaust air outlet. be able to. By making the exhaust air speed at the entire exhaust port uniform and exhausting in a distributed manner, the exhaust air speed can be reduced and the rise of dust on the surface to be cleaned can be suppressed.

  The second invention prevents the fine fibrous dust contained in the exhaust from being entangled with the exhaust port by setting the thickness of the exhaust current plate of the first invention to be thicker than the hole diameter. It is something that can be done.

  In addition to the first invention, the third invention includes a plurality of exhaust rectifying plates provided at intervals, and one of the plurality of exhaust rectifying plates is located at both ends thereof. Adjacent to the inside of the exhaust port and moving from the exhaust upstream side to the downstream side, the hole diameters of the holes provided in the plurality of exhaust rectifying plates are made smaller, and the total opening area is conversely made larger, so that the exhaust gas is stepped. When the softening is performed, the loss associated with the passage of the exhaust air rectifying plate is eliminated, and a strong suction force can be maintained.

  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)
A first embodiment of the present invention will be described with reference to FIGS.

  In FIG. 1, a vacuum cleaner 1 has a suction tool 3 for sucking dust attached to an extension pipe 2, and the extension pipe 2 is connected to a vacuum cleaner main body 7 via a hand handle 4 and a hose 6 with a hose joint 5. (Hereinafter referred to as a main body 7). The main body 7 includes a single front wheel caster 8 and a pair of rear wheels 9 that are pivotally supported, and is capable of traveling. As shown in FIG. 2, the main body 7 includes a dust collection chamber 10 in front of the main body 7 and an electric blower 11 that generates suction force in the rear. The electric blower 11 is attached to the main body 7 by a support rubber fly 12 and a support rubber cap 13. The front of the electric blower 11 communicates with the dust collection chamber 10, and a dust collection bag 14 that is detachably attached to the dust collection chamber 10 is arranged for suction by the suction of the electric blower 11.

  The operation of the above-described configuration is that suction air generated by the action of the electric blower 11 is sucked together with dust from the suction tool 3, passes through a suction passage (not shown) in the extension pipe 2 and the hose 6, and the main body 7 After dust is removed from the dust bag 14 inside, it passes through the electric blower 11 and becomes exhausted. The exhaust gas is further discharged from the exhaust port 15 to the outside of the main body 7 after fine fine dust contained in the exhaust gas is removed by a filter (not shown).

  The details of the exhaust part, which is a feature of the present invention, will be described below.

3 is a view of the exhaust portion as seen from the rear of the main body 7, and FIG. 4 is a side sectional view. FIGS. 5 and 6 show the exhaust flow straightening plate 16 as viewed from the direction of the arrow a in FIG. As shown in the figure, an exhaust air rectifying plate 16 is provided adjacent to an inside (exhaust upstream side) of a long hole-shaped exhaust port 15 provided at the rear part of the main body 1-1, and the exhaust gas is exhausted. After passing through 16, the air is discharged from the exhaust port 15 into the atmosphere. The exhaust flow straightening plate 16 is formed by opening countless and substantially uniform round holes 17 having a diameter of 0.05 mm to ¹ mm, and is based on securing a total opening area of 3000 mm ² or more. Here, it is needless to say that the total opening area is not necessarily required to be 3000 mm ² or more in a low suction force such as a rechargeable vacuum cleaner.

  The operation of the above configuration can suppress variations in the exhaust wind speed exhausted from the exhaust port 15 by allowing the exhaust to pass through innumerable holes 17 that are uniformly opened in the exhaust rectifying plate 16. The exhaust air velocity of the entire exhaust port 15 can be made substantially uniform. By making the exhaust air uniform (distributed exhaust air) in this way, the exhaust air speed can be reduced (parts where the wind speed is locally high is eliminated), and the rising of dust on the surface to be cleaned can be suppressed.

  At this time, by making the shape of the hole 17 provided in the exhaust flow straightening plate 16 into a substantially circular shape, the vortex of the exhaust airflow can be suppressed to a minimum and the strength can be suppressed from decreasing, and as shown in FIGS. By arranging three or four holes 17 uniformly, the opening area can be efficiently secured.

  Next, as shown in FIG. 8, by making the thickness t of the exhaust flow straightening plate 16 larger than the dimension of the hole diameter D, fine dust (fibrous material) staying in the main body 7 (filter or the like) is exhausted and straightened. There exists an effect | action which makes it difficult to get entangled in the hole 17 of the board 16. FIG.

  Next, by using a metal such as stainless steel as the material of the exhaust rectifying plate 16, the exhaust rectifying plate 16 itself can be made thin and the internal space can be used effectively. The metal tone of the exhaust air rectifying plate 16 that can be seen more has an effect of improving the appearance quality.

  In addition, by setting the thickness t of the exhaust flow straightening plate 16 to 0.3 mm or less, the micropores can be processed by a general method such as etching or electroforming. Further, as shown in FIGS. 9 and 10, the chamfering process 17-1 is applied to the opening end surface 18 of the hole 17 of the exhaust rectifying plate 16, thereby reducing resistance when the exhaust enters and exhausts the exhaust rectifying plate 16. Since the vortex of the airflow can be minimized, the wind noise can be reduced and the loss when passing through the exhaust air rectifying plate 16 can be reduced. One of the features of this chamfering process is that it can be easily formed by the etching process.

(Embodiment 2)
Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, a plurality of exhaust rectifying plates 16 are used in combination with the first embodiment. In FIG. 11, two exhaust rectifying plates are integrated by a connecting frame 19 (the holding hole 16-1 of the exhaust rectifying plate 16 is set on the shaft 19-1 of the connecting frame 19, and the shaft is melted and fixed). Is.

  The effect of the above configuration is that the rectifying action is increased, and the exhaust discharged to the outside of the main body can be made softer and softer. By making the hole diameter on the downstream side smaller than the upstream side, the exhaust gas can be rectified and softened in stages. Furthermore, by increasing the total opening area of the holes on the downstream side of the exhaust upstream side, it is possible to eliminate the loss associated with the passage of the exhaust rectifying plate 16 and maintain a strong suction force.

  As described above, the vacuum cleaner according to the present invention is useful for a vacuum cleaner that achieves both high suction performance and softening of exhaust (reducing exhaust wind speed).

Overall view of the electric vacuum cleaner according to Embodiment 1 of the present invention Sectional drawing of the vacuum cleaner main body in Embodiment 1 of this invention Same as above, rear view of main body of electric vacuum cleaner in embodiment 1 Enlarged view of the exhaust section of FIG. FIG. 4 is a front view of the exhaust air rectifying plate of the electric vacuum cleaner according to Embodiment 1 of the present invention (a arrow in FIG. 4). Part A enlarged view of FIG. 5 (hole shape) Fig. 5A enlarged view (different arrangement of hole shape) AA sectional view of FIG. AA sectional view of another example of FIG. AA sectional view of another example of FIG. The expanded sectional view of the exhaust part of the vacuum cleaner in Embodiment 2 of this invention

Explanation of symbols

15 Exhaust port 16 Exhaust current plate 17 Hole 18 Open end face

Claims (3)

A main body having a built-in electric blower, an exhaust air rectifying plate having a plurality of holes, and an exhaust port that is formed on an outer periphery of the main body and exhausts exhaust gas from the electric blower, A vacuum cleaner provided adjacent to the inside of the exhaust port. The vacuum cleaner according to claim 1, wherein the thickness of the exhaust rectifying plate is set to be thicker than the hole diameter. A plurality of exhaust rectifying plates provided at intervals, and one of the exhaust rectifying plates located at both ends of the exhaust rectifying plates is adjacent to the inside of the exhaust port, from the exhaust upstream side to the downstream side The vacuum cleaner according to claim 1, wherein the diameter of the holes provided in the plurality of exhaust rectifying plates is reduced and the total opening area is conversely increased as the movement proceeds.

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