JP3828696B2 - Vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum cleaner in which paper or an air-impermeable bag can be used as a dust collection bag for collecting dust.
[0002]
[Prior art]
Conventionally, a vacuum cleaner forms a dust collection chamber in the main body case of the vacuum cleaner body, and a dust collection bag or the like as a dust collection device is disposed in the dust collection chamber, and the dust sucked in along with the suction airflow is It is configured to be removed by a dust bag. For this reason, a dust bag or the like cannot be used other than a bag having a predetermined configuration for being arranged in a predetermined state in the dust collection chamber, that is, a dedicated bag.
[0003]
In addition, dust bags cannot be used except those made of breathable materials, and it is necessary to provide a dust collection chamber in the main body case. It will be.
[0004]
[Problems to be solved by the invention]
As described above, the conventional vacuum cleaner has a restriction that the dust collector other than the dust collector consisting of a dedicated dust bag cannot be used because of its configuration. Since the dust chamber must be formed, the main body of the vacuum cleaner must be enlarged.
[0005]
[Means for Solving the Problems]
This invention was made in view of the above circumstances, and does not require a dedicated dust collection bag, and can also be used in a dust collection bag made of either breathable or non-breathable material, Moreover, it aims at providing the vacuum cleaner which does not need to provide a dust collection chamber in a vacuum cleaner main body .
In order to achieve this object, the invention of claim 1 is provided with a dust discharge port in which a suction port is formed in a main body case of a cleaner body housing an electric blower, one end is opened and the other end is attached to a dust bag. A suction pipe provided with the opening facing the suction opening and communicating with the suction pipe through a first opening formed in the vicinity of the dust discharge opening and having a suction opening formed at the tip A pipe is attached to the suction pipe at an acute angle so that dust sucked from the suction opening moves toward the dust discharge port and is collected in the dust bag. An exhaust pipe communicating with the inside of the suction pipe through a second opening formed in the suction pipe closer to the dust discharge opening than the opening of the exhaust pipe, and a part of the exhaust air flowing out from the pipe is connected to the dust discharge opening Crossing at an acute angle with respect to the suction tube A recirculation air passage that guides the exhaust air discharged from the electric blower is provided, and a leakage port that leaks a part of the exhaust air to the outside is provided in the recirculation air passage. Dust sucked together with the suction airflow from the suction opening while inflating the dust bag by passing a part of the exhaust air flowing out from the second opening through the pipe to the suction pipe through the dust discharge port Is discharged from the dust discharge port by the inertia force applied by the suction airflow passing through the suction pipe, and is a vacuum cleaner that collects dust in the dust collection bag.
[0006]
According to the first aspect of the present invention, the suction airflow sucked by the electric blower is used as exhaust air to recirculate the remaining exhaust air partially leaked from the leak port, and dust sucked together with the suction airflow from the suction opening is collected. The dust can be collected in the dust bag by being discharged from the dust discharge port by the inertial force applied by the suction airflow . In this case, the dust sucked in from the suction opening flows in the suction air passage that intersects the suction air passage at an acute angle by the inertial force applied by the suction air flow, that is, does not move, and moves toward the dust outlet. Is smoothly discharged into the dust bag from the dust discharge port. Therefore, the dust bag attached to the dust outlet has the effect of being usable regardless of whether it is breathable or impermeable, and any shape can be used as a bag. It is.
Further, since there is no need to provide a dust collection chamber in the main body case, the vacuum cleaner main body can be downsized .
[0007]
The invention according to claim 2 is the electric vacuum cleaner according to claim 1, wherein the vacuum cleaner is provided with an adjusting means for adjusting the amount of exhaust air leak from the leak port.
[0008]
The invention of claim 2 has the effect that the flow rate of the suction airflow can be adjusted by adjusting the leak amount of the exhaust air.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to FIG.
In FIG. 1, reference numeral 1 denotes a vacuum cleaner. The vacuum cleaner 1 includes a vacuum cleaner body 2, a suction pipe 40 that forms a suction air path K, a suction pipe 50 that forms a suction air path S, and a reflux air path. An exhaust pipe 60 that forms H, a dust bag 70, and the like are included.
[0010]
The vacuum cleaner body 2 includes a main body case 10, an electric blower 30 provided in the main body case 10, a cord reel 17a, and the like.
The main body case 10 is integrally formed by connecting split cases 11 and 11 that are split into two in the vertical direction from the center in the front-rear direction (left-right direction in the figure) with screws (not shown). In the following description, the electric fan 30 side of the main body case 10 will be described as the front side, and the side where the handle 20 is provided will be described as the upper side.
[0011]
A suction port 13 is formed in a front wall (hereinafter referred to as a front wall) 12 of the main body case 10, and a frame plate 14 having a plurality of slit-shaped air holes 14 a is attached to the suction port 13. It has been. A blower chamber 15 is formed in the main body case 10 by a partition 15a, and the blower chamber 15 and the suction port 13 communicate with each other. Further, an exhaust chamber 18 formed by a peripheral wall of the main body case 10 and a lower peripheral wall of a cover 35 that houses an electric blower 30 described later is formed below the blower chamber 15. 18 and the inside of the cover 35 communicate with each other through an opening 36 formed in the peripheral wall 35.
[0012]
The peripheral wall 35 has a packing 19 provided with a communication hole 19a made of elastic rubber that prevents the exhaust air flowing into the exhaust chamber 18 from the opening 36 from leaking into the reel chamber 16 and the like, and communicated with the opening 36. It is attached.
Further, an exhaust port 18a is formed in the side wall of the exhaust chamber 18, that is, the side surface of the main body case 10, and a part of the reflux air passage H communicating with the exhaust port 18a is formed in the main body case 10. An exhaust pipe 61 is integrally attached. Further, a leak port 62 is formed in the tube wall near the tip of the exhaust pipe 61. The exhaust pipe 61 has a shielding ring as an adjusting means that can be slidably contacted with the tube wall in the axial direction. 63 is fitted and attached, and the opening area of the leak port 62 can be changed by the shielding ring 63, whereby the amount of exhaust air leaking can be adjusted.
[0013]
Further, a rear side of the blower chamber 15 is a reel chamber 16, and the reel chamber 16 is provided with the cord reel 17a around which a cord 17 is wound. The cord 17 is pulled out from a drawer port (not shown). The plug 17b is attached to the front-end | tip part.
A handle 20 is provided on the upper part of the main body case 10, and a power switch 21 is provided on the front part of the handle 20. One contact (not shown) of the power switch 21 is connected to a lead wire (not shown) drawn from a fixed sliding contact ring (not shown) that is in sliding contact with a contact plate (not shown) provided on the cord reel 17a. is, other contact (not shown) is thus connected to the leads (not shown) to the electric motor 31 of the electric blower 30 to be described later.
[0014]
Next, the electric blower 30 disposed in the blower chamber 15 is composed of the electric motor 31 and the fan part 32 described above, and the fan part 32 is an opening (see FIG. A fan cover 33 having an unillustrated) , a centrifugal fan (not shown) disposed in the fan cover 33 and attached to the rotating shaft of the electric motor 31, and a fixed fan (not shown).
[0015]
And the packing part 34 which has a buffer function is fitted and attached to the fan part 32 of this electric blower 30, and the circumference | surroundings of the electric motor 31 are covered with the cover 35 formed in the bottomed cylinder shape which opened the front side. The opening 36 is formed in the lower peripheral wall of the cover 35, and the opening on the front side of the cover 35 is airtightly fitted around the packing 34.
[0016]
The cover 35 is supported on the front side by the packing 34, and the rear side is supported by a concave part 15 b formed with a convex part 37 on the partition wall 15 a, and the electric blower 30 includes the cover 35 and the packing 34. Is supported in the fan chamber 15.
[0017]
Further, a lid 3 that covers substantially the entire front side portion of the main body case 10 is attached to the front portion of the main body case 10, and the lid 3 has an opening 41 that faces the suction port 13. In addition, a suction pipe 40 that constitutes the suction air passage K formed to extend forward is provided, and a dust discharge port 42 for discharging dust is formed at the front end of the suction pipe 40. Has been. The dust collection bag 5 made of a non-breathable material such as a plastic bag or a breathable material such as a paper bag is attached to the dust discharge port 42.
[0018]
Further, the suction tube 40, (hereinafter abbreviated as opening 43.) The first opening 43 on the lower side of the tube wall in the vicinity of the dust discharge port 42 is formed, also slightly than the opening 43 A second opening 44 (hereinafter abbreviated as opening 44) is formed on the upper side of the tube wall that is close to the dust discharge port 42 side. And the area | region where the inside of the said suction pipe 40 and the opening 43 and the opening 44 merge forms a merge part.
Further, when the vacuum cleaner 30 is in an operating state, the wind pressure (atmospheric pressure) at the junction is set to be larger than the atmospheric pressure, and therefore the dust collection attached to the dust discharge port 42. The bag 5 does not swell by the action of the wind pressure and does not block the dust discharge port 42. Further, for example, even a paper bag having air permeability does not bulge and close the dust discharge port 42 because it has air resistance.
[0019]
Incidentally, the wind pressure is greater than atmospheric pressure (the flow path resistance of the suction air path K can be increased by greater than the channel resistance of the return air path H) that is in the confluence section, the inventors have confirmed by experiment ing. Further, making the wind pressure larger than the atmospheric pressure is specific to each condition such as the shape of the main body case, the performance of the electric blower, the flow resistance of the reflux air passage H, the suction air passage K, and the suction air passage S. It can be set by experimentally determining the design .
[0020]
The suction pipe 40 is integrally attached with a suction pipe 50 which communicates with the suction pipe 40 through the opening 43 and forms the suction air passage S which gradually inclines backward as it goes downward. The suction pipe 50 has a distal end bent toward the surface to be cleaned, its end edge slightly protruding from the bottom surface of the cleaner body 2, and a suction opening 51 is formed on the end surface. ing. As described above, since the suction pipe 50 is gradually inclined backward as it goes downward, the suction direction of the suction pipe 50 intersects the suction direction of the suction pipe 40 at an acute angle.
[0021]
By crossing at an acute angle in this way, the dust moving in the suction air passage S can be reliably discharged from the dust outlet 42 without moving in the suction air passage K direction.
[0022]
Further, the suction pipe 40 is formed with an exhaust pipe 60 that communicates with the inside of the suction pipe 40 through the opening 44 and forms a part of the reflux air passage H that gradually inclines rearward as it goes upward. ing. Thus, the exhaust pipe 60 is provided so as to be gradually inclined rearward as it goes upward, so that the exhaust pipe 60 also intersects the suction pipe 40 at an acute angle.
[0023]
Further, the exhaust pipe 60 and the exhaust pipe 61 communicating with the exhaust port 18 a are connected to the exhaust pipe 60 and the exhaust pipe 61 by a flexible hose 65 that constitutes a reflux air passage H. Since it is configured in this manner, the exhaust air exhausted as exhaust air after being sucked by the electric blower 30 has an opening 36 formed in the peripheral wall 35 as shown by an arrow b in the figure, an exhaust chamber 18, exhaust port 18a, the exhaust pipe 61, the hose 65 flows into the exhaust pipe 60 sequentially through by suction pipe 40, it is sucked again into the electric blower 30 through the opening 13 and is again exhausted as exhaust air. That is, the exhaust air is circulated by being sucked into the electric blower 30 through the reflux air passage H and the suction air passage K.
[0024]
Further, when the leak port 62 is open, a part of the exhaust air leaks from the leak port 62 to the outside. By leaking a part of the exhaust air, external air is sucked as a new suction air flow from the suction opening 51 as indicated by an arrow a, and is present on the surface to be cleaned together with the suction air flow sucked from the suction opening 51. The dust d to be sucked is sucked into the suction pipe 50. Then, the sucked dust d flows in the direction of the dust discharge port 42 without moving toward the suction port 13 due to the inertia force applied by the suction airflow as shown by the arrow d, that is, moves and moves to the dust discharge port 42. Are discharged into the dust bag 5 and collected in the dust bag 5.
[0025]
The dust d is smoothly discharged toward the discharge port 42 because it receives a force in the direction indicated by the arrow c by a part of the exhaust air flowing from the opening 44 to the joining portion through the exhaust pipe 60. It is.
[0026]
Further, by changing the opening area of the leak port 62 by the shielding ring 63, the amount of the suction air flow sucked from the suction opening 51, that is, the suction force can be adjusted.
[0027]
Next, the operation of the vacuum cleaner will be described.
[0028]
First, the cord 17 is pulled out, the plug 17b is connected to a power outlet, the handle 20 is gripped, and the power switch 21 is closed. The electric blower 30 is driven by this closing, and the suction air flow sucked from the suction opening 51 is sucked from the suction port 13 by the suction action of the electric blower 30, and the suction sucked into the electric blower 30 As described above, the airflow passes through the electric blower 30 as exhaust air and passes through the opening 36 formed in the peripheral wall 35, the exhaust chamber 18, the exhaust port 18a, the exhaust pipe 61, the hose 65, and the exhaust pipe 60 in this order. flows into 40, the opening 13 is sucked again into the electric blower 30 through, and is again exhausted as exhaust air. That is, the air is recirculated through the recirculation air passage H and the suction air passage K and sucked into the electric blower 30.
[0029]
Further, since a part of the exhaust air is exhausted or leaked to the outside from the leak port 62, the flow rate recirculated to the electric blower 30 is smaller by the leaked flow rate than the flow rate discharged from the electric blower 30. Therefore, the reduced flow rate is sucked into the electric blower 30 as a new suction airflow from the suction opening 51.
[0030]
And the dust d which exists in the to-be-cleaned surface is sucked with the suction airflow sucked from the suction opening 51. The suction airflow is sucked into the electric blower 30 through the opening 13 through the suction pipe 40, but the sucked dust d is an inertial force applied by the suction airflow when the suction airflow flows through the suction pipe 50. That is, when the sucked air flow flows through the suction pipe 50, it is moved by the inertia force generated by the air flow and is moved in the suction pipe 50 so as not to move toward the suction pipe 40. 42 is discharged into the dust bag 5 and collected. Further, when the dust d reaches the merging portion, a force directed toward the dust discharge port 42 is applied by a part of the non-air that is circulated, so that the dust d is discharged from the dust discharge port 42 more smoothly. It is.
[0031]
Further, since the suction pipe 50 intersects the suction pipe 40 at an acute angle, the sucked dust d is reliably transferred without changing its direction toward the suction pipe 40 by the applied inertial force. It can be discharged from the dust discharge port 42.
[0032]
Further, since the wind pressure at the confluence is set to be greater than the atmospheric pressure, the pressure of the dust d can be easily discharged from the dust discharge port 42 by this pressure difference, and the dust collecting bag 5 is inflated. Since the discharge port 42 is not blocked, the dust d is easily discharged from the dust discharge port 42.
[0033]
For example, if the surface to be cleaned has a large suction force such as a curtain or a cover of a futon, the suction opening 51 may be sucked and the cleaner 1 cannot be smoothly moved along the curtain or the like so that cleaning cannot be performed. . In such a case, it is necessary to reduce the suction air volume from the suction opening 51 to weaken the suction force. However, in this case, the shielding ring 63 is moved to reduce the opening area of the leak port 62, thereby reducing the leakage. The suction force can be reduced by reducing the amount of leakage from the mouth 62. As a result, dust adhering to the surface of a curtain or the like can be easily cleaned.
[0034]
As described above, the vacuum cleaner 1 includes the blower chamber 15 that houses the electric blower 30, the suction port 13 provided on the upstream side of the blower chamber 15, and the exhaust port 18 a that discharges the exhaust air from the electric blower 30. In addition, a suction pipe 40 that forms a suction air passage K communicating with the suction port 13, a suction pipe 50 that forms a suction air passage S in the suction pipe 40 and has a suction opening 51 that sucks dust d in, and a reflux air passage H And an exhaust pipe 61 communicating with the exhaust port 18a. The exhaust pipe 61 and the exhaust pipe 60 are connected by a hose 65, and the tip of the suction pipe 40, that is, the suction pipe 40 is provided. The dust collection bag 5 is attached to the dust discharge port 42 provided in the vicinity of the junction of the reflux air passage H and the suction air passage S that opens inside, and the leak port 62 that leaks a part of the exhaust air to the outside is provided. Also, it is set larger than the merging portion atmospheric pressure. From this, the suction air flow sucked from the suction port 13 is used as exhaust air to leak a part from the leak port 62 and the remaining exhaust air is recirculated to the junction and sucked together with the suction air flow from the suction opening 51. The collected dust d can be discharged from the dust discharge port 42 and collected in the dust collection bag 5 by the inertial force applied by the suction airflow . Therefore , the dust bag 5 can be used regardless of air permeability or air permeability. In addition, the dust collection bag 5 can be used by attaching a sheet member that can be formed into a bag shape without being formed as a bag in advance to the dust discharge port 42 as a bag shape. In addition, as the said dust collection bag 5, since the plastic bag used at the time of shopping, such as a commercially available plastic bag, a supermarket, or a paper bag, etc. can be used, a special dust collection bag is not required. In other words, even a bag that becomes a waste product can be used.
[0035]
Further, since it is not necessary to provide a dust collection chamber in the main body case 10, that is, the cleaner main body 2, unlike the conventional vacuum cleaner, the main body of the cleaner can be reduced in size.
Further, the suction port 13 is formed on one side surface of the main body case 10, the suction air passage K and the dust discharge port 42 are in a substantially linear positional relationship with respect to the suction port 13, and the suction opening 51 is formed in the main body case. 10 is formed on one side, that is, the side surface that intersects the front surface, that is, the lower side surface, and the suction air passage S is formed to intersect the suction air passage K at an acute angle and inclined toward the dust discharge port 42. The dust d sucked from the opening 51 does not flow through the suction air passage K that intersects the suction air passage S at an acute angle by the inertial force applied by the suction air flow, and is inclined toward the dust discharge port 42. The inside of the dust bag 5 is smoothly discharged and reliably discharged from the dust outlet 42 into the inflated dust bag 5 and collected.
[0036]
Further, since the shielding ring 63 is provided as an adjusting means for adjusting the amount of exhaust air leaked from the leak port 62, the flow rate of the suction airflow can be adjusted by adjusting the amount of exhaust air leak, so that a curtain or the like When the suction force is large, the surface to be cleaned which is difficult to clean can be easily cleaned.
[0037]
In the above-described embodiment, the exhaust pipe 60 and the exhaust port 18a are connected via the exhaust pipe 61 and the hose 65. However, the exhaust pipe 18 and the exhaust port 18a are partitioned by a partition wall in the main body case 10. A reflux flow path communicating with the exhaust pipe is formed, and an opening of the reflux flow path, that is, an exhaust port is opened on the front wall of the main body case 10 (for example, the front portion of the handle 20), and the exhaust pipe 60 is directly connected to the opening. In this case, since the exhaust pipe 61 and the hose 65 can be omitted, there are advantages such as easy handling. Further, the suction opening 51 is formed in the main body case 10 so as to open to the lower surface of the main body case 10, and a part of the suction air passage communicating with the suction opening is formed in the main body case 10, and the end portion thereof is formed. It is good also as a structure which opens to the front wall (for example, lower part of a front wall) of the said main body case 10, and connects the edge part of the said suction pipe 50 to this opening.
[0038]
Moreover, in the said embodiment, it is set as the structure which connects the exhaust pipe 60 and the exhaust port 18a via the exhaust pipe 61 and the hose 65, and also the suction pipe 40 and the suction pipe 50 with the exhaust pipe 60 of the main body case 10 is comprised. The structure is formed so as to protrude from the front wall. However, as described above, this forms a reflux flow path communicating with the exhaust chamber 18 and a part of the suction air passage in the main body case 10, and the suction pipe 40. The suction pipe 50 and the exhaust pipe 60 may be integrally formed in the main body case 10, and only the dust discharge port 42 may be formed to protrude from the front wall of the main body case 10, and thus configured. In this case, there is an advantage that the entire vacuum cleaner body 2 can be made compact and the operability can be improved.
[0039]
Further, in the case where the configuration is different from that of the embodiment as described above, the leak port and the adjusting means form the leak port at an appropriate part of the exhaust air passage, and the position and leak of the leak port are provided. A configuration in which the opening area can be adjusted in consideration of the shape of the mouth and the like may be employed.
[0040]
【The invention's effect】
As described above , according to the first aspect of the present invention , the dust collection bag attached to the dust discharge port may be of any shape as long as the bag can be formed into a bag shape regardless of breathability or air permeability. Such a device can be used, and since there is no need to provide a dust collection chamber in the main body case, the vacuum cleaner main body can be reduced in size .
According to the invention of claim 2, it has an effect that the flow rate of the suction airflow can be adjusted by adjusting the leak amount of the exhaust air.
[Brief description of the drawings]
FIG. 1 is a side view of a cross section of a part (main part) of a vacuum cleaner according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Vacuum cleaner main body 5 Dust collection bag 18a Exhaust port 10 Main body case 13 Suction port 15 Blower room
30 Electric blower 40 Suction pipe
41 Opening 42 Dust outlet
43 First opening
44 Second opening 50 Suction pipe
51 Suction opening 60 Exhaust pipe
62 Leak
63 Shielding ring (adjustment means)
d Dust H Reflux air path K Suction air path S Suction air path

Claims (2)

Form a suction port in the main body case of the vacuum cleaner body that houses the electric blower,
A suction pipe having a dust discharge port to which one end is opened and a dust bag is attached to the other end is provided with the opening facing the suction port,
A suction pipe that communicates with the inside of the suction pipe through a first opening formed in the vicinity of the dust discharge opening and has a suction opening formed at the tip thereof, and dust sucked from the suction opening is connected to the dust discharge opening. Attached by crossing at an acute angle with respect to the suction pipe so that it moves toward and is collected in the dust bag,
An exhaust pipe communicating with the inside of the suction pipe through a second opening formed in the suction pipe closer to the dust discharge port than the first opening, and a part of the exhaust air flowing out from this pipe Attach to the suction tube at an acute angle so as to face the dust outlet,
A reflux air passage is provided to guide the exhaust air discharged from the electric blower,
A leak port is provided in the reflux air passage to leak a part of the exhaust air to the outside.
By operating the electric blower, the dust collection bag is inflated by passing a part of the exhaust air flowing out from the second opening through the exhaust pipe to the suction pipe through the dust discharge port, and the suction A vacuum cleaner characterized in that dust sucked together with a suction airflow from the opening is discharged from the dust discharge port by the inertia force applied by the suction airflow passing through the suction pipe and collected in the dust collection bag. 2. The electric vacuum cleaner according to claim 1, wherein an adjusting means for adjusting a leak amount of the exhaust air from the leak port is provided in the reflux air passage .

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