JP2008023043A - Upright vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner with a simple structure without generating tapping sound. <P>SOLUTION: The vacuum cleaner comprises: an electric fan 33; a dust separating part 42; a pleated filter 64; a second dust chamber 60 communicating with a first dust chamber 40; a communication ventilation pipe 35 making the downstream side of the pleated filter 64 communicate with an intake opening 33A of the electric fan 33; a nozzle 68 for blowing air to the pleated filter 64 to remove the attached dust, a connection opening 41Ba at the upper part of the first dust chamber 40 for introducing the removed dust to the first dust chamber 40; a bypass ventilation pipe 36 for making the upper part of the first dust chamber 40 communicate with the communication ventilation pipe 35; a pleated filter 50 in the bypass wind pipe 36; a selector valve 38 for opening/closing the bypass ventilation pipe 36 and the communication ventilation pipe 35; and an open/close valve for opening/closing a suction ventilation pipe 31. When the cleaning is not performed, the communication ventilation pipe 35 is closed by the selector valve 38 and the suction ventilation pipe 31 is closed by the open/close valve, so that outside air is blown to the pleated filter 64 from the nozzle 68. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vertical electric vacuum cleaner in which a pleat filter is provided at a position above a first dust separating means for separating dust and air.

  Conventionally, a vacuum cleaner provided with a pleated filter that is a secondary filter is known (see Patent Document 1).

  Such a vacuum cleaner includes a vacuum cleaner body having a dust container chamber formed therein, a dust container that is detachably attached to the dust container chamber, and an electric blower provided downstream of the dust container chamber. And a pleated filter that is a secondary filter that is detachably attached to the rear opening of the dust collecting container, and a dust removing means that shakes off dust adhering to the pleated filter.

The dust removal means has a ring rotatably disposed at a position facing the pleat filter, and a protrusion that contacts the pleat filter is provided on the ring, and the ring is rotated when the cord reel winds up the power cord. As the rotator rotates, the projection moves over the pleat peaks of the pleat filter, thereby giving vibration to the pleat filter and removing dust adhering to the pleat filter.
JP 2004-358135 A

  However, in such a vacuum cleaner, since the projection hits the peak of the pleat of the pleat filter, there is a problem that the hitting sound is noisy. In addition, if the dust dropped from the pleated filter is returned to the dust collecting chamber in the dust collecting container, there is a problem that a complicated mechanism is required.

  An object of the present invention is to provide a vertical vacuum cleaner that can return dust dropped from a pleat filter into a dust collection chamber with a simple configuration without generating a hitting sound.

The invention of claim 1 includes an electric blower that sucks dust from a dust suction port, first dust separation means that separates air from the dust sucked into the dust suction port, and dust that has passed through the first dust separation means. A pleat filter that separates the air, a first dust chamber in which the first dust separating means is disposed, a second dust chamber that is provided above the first dust chamber and in which the pleat filter is disposed, and the pleat A vertical vacuum cleaner comprising a communication air passage communicating with the downstream side of the filter and the suction opening of the electric blower,
Air blowing means is provided for blowing dust onto the pleated filter to remove dust attached thereto,
The first dust collection chamber and the second dust collection chamber communicate with each other, and an opening for introducing dust dropped from the pleated filter into the first dust chamber is provided in an upper portion of the first dust collection chamber.
Providing a bypass air passage communicating the upper part of the first dust collecting chamber and the communication air passage;
A filter is installed in this bypass air passage,
A first opening / closing means for opening / closing the bypass air passage; a second opening / closing means for opening / closing a communication air passage upstream of the joining position where the bypass air passage joins; the dust inlet and the first dust collecting chamber; Providing a third opening / closing means for opening and closing the communicating suction air passage;
During cleaning, the first opening / closing means is closed, the second and third opening / closing means are opened,
When not cleaning, the first opening / closing means is opened, the second and third opening / closing means are closed, and the air blowing means is operated.

  According to the present invention, it is possible to return the dust dropped from the pleat filter to the dust collection chamber with a simple configuration without generating a hitting sound for dropping the dust.

  Embodiments of a vertical vacuum cleaner according to the present invention will be described below with reference to the drawings.

[First embodiment]
A vertical vacuum cleaner 20 shown in FIGS. 1 and 2 includes a suction port body 21 having a suction chamber (not shown) having a suction opening (dust suction port) (not shown) on the bottom surface, a vacuum cleaner body 30, and , And a handle 100 extending upward from the upper portion of the cleaner body 30. A rotary cleaning body 22 is provided in the suction port body 21 and is rotated by a motor (not shown).

  The vacuum cleaner body 30 is tiltable in the front-rear direction (left-right direction in FIG. 2) with respect to the suction port body 21, and the first dust collection in the suction chamber of the suction port body 21 and the vacuum cleaner body 30 described later. The chamber 40 is communicated by a suction air duct 31 that forms a suction air duct. The suction air passage tube 31 is provided with an on-off valve (third opening / closing means) 32 that is an electromagnetic valve, and the suction air passage tube 31 can be opened and closed.

  An electric blower 33 is provided in the lower part of the vacuum cleaner body 30. The first dust collection chamber 40 is located above the electric blower 33 and the second dust collection is located above the first dust collection chamber 40. Each chamber 60 is provided.

  The second dust collecting chamber 60 is communicated with the suction opening 33 </ b> A of the electric blower 33 through the communication air duct 35. The first dust collection chamber 40 communicates with the communication air duct 35 via a bypass air duct 36 that forms a bypass air duct.

  As shown in FIGS. 3 to 5, the first dust collection chamber 40 is formed by a dust collection chamber case 41. The dust collection case 41 can be pulled out from the cleaner body 30 leftward (in FIG. 2) and removed.

  The dust collection chamber case 41 is formed in a housing shape, and an opening 41Aa is formed in the rear wall 41A (see FIG. 2). The opening 31A of the suction air duct 31 is inserted into the opening 41Aa.

  A connection opening (opening) 41Ba and a bypass opening 41Bb are formed adjacent to the connection opening 41Ba in the upper wall portion 41B of the dust collection chamber case 41. The bypass opening 41Bb communicates with the bypass air passage 36.

  In the dust collection case 41, a dust separation part (first dust separation means) 42 that separates dust and air and a dust collection part 43 that collects the separated dust are provided. The dust collection portion 43 is formed on the right side (in FIG. 1) of the dust separation portion 42, and on the left side of the dust separation portion 42, a guide air passage 46 extending in the vertical direction and communicating with the connection opening 41Ba and the bypass opening 41Bb is formed. Has been.

  The dust separation part 42 includes a first cylindrical part 44, a second cylindrical part 45 formed outside the first cylindrical part 44, a net filter N1 having a substantially conical shape provided in the first cylindrical part 44, and the like. It is composed of

  As shown in FIG. 2, the mouth portion 31 </ b> A of the suction air duct 31 faces a part of one end opening 44 </ b> A of the first cylindrical portion 44 and one end opening 45 </ b> A of the second cylindrical portion 45. The other end opening 44B of the first cylindrical portion 44 communicates with the guide air passage 46 as shown in FIG. The other end of the first cylindrical portion 44 and the other end of the second cylindrical portion 45 are closed by a front wall portion 47. A predetermined gap is formed between the front wall portion 47 and the side wall portion 41 </ b> D of the dust collection chamber case 41.

  A cutout 44K is formed on the lower right side (see FIG. 1) of the first cylindrical portion 44, and the inside of the first cylindrical portion 44 and the inside of the second cylindrical portion 45 communicate with each other through the cutout 44K. A cutout 45K is formed on the right side (see FIG. 1) of the second cylindrical portion 45, and the inside of the second cylindrical portion 45 and the dust collecting portion 43 communicate with each other through the cutout 45K. Further, as shown in FIG. 1, a guide wall GK extending from the lower part of the notch 45K of the second cylindrical part 45 to the upper part of the notch 44K of the first cylindrical part 44 is formed.

  A frame body 48 is provided at the bottom of the dust collecting portion 43, and a net filter N2 is attached to the frame body 48. A bottom air passage 49 extending in the left-right direction and communicating with the guide air passage 46 is formed between the frame 48 and the bottom wall portion 41C of the dust collecting case 41. The bottom air passage 49 is connected to the bottom air passage 49 via the net filter N2. The dust collector 43 communicates with the dust collector 43.

  A pleated filter 50 is provided in the bypass opening 41Bb, and the pleated filter 50 is oscillated by a vibration mechanism (vibration means) 51 to drop the attached dust. A guide wall GK2 for guiding air to the connection opening 41Ba is provided below the pleated filter 50.

  As shown in FIGS. 3 to 6, the vibration mechanism 51 includes a moving plate 52 that reciprocates in the left-right direction (in FIG. 6), first and second arms 53, 54 that reciprocate the moving plate 52, The motor 55 etc. which rotate the 1st arm 53 are comprised.

  A plurality of long holes 52A are formed in the moving plate 52, and a plurality of protrusions 52T that enter the valley portions 50A of the pleated filter 50 are provided on the lower surface of the moving plate 52. A shaft 56 is inserted into the long hole 52 </ b> A, and this shaft 56 is provided at the distal end portion 54 </ b> A of the second arm 54. The rear end portion 54B of the second arm 54 is rotatably supported by the front end portion 53A of the first arm 53, and the drive shaft 55a of the motor 55 is fixed to the rear end portion 53B of the first arm 53.

  When the drive shaft 55a of the motor 55 rotates, the first arm 53 rotates around the drive shaft 55a, and the rotation of the first arm 53 causes the movable plate 52 to move in the left-right direction (in FIG. 5). ) To give vibration to the pleated filter 50.

  The first dust collection chamber 41 and the second dust collection chamber 60 are communicated with each other through a connection opening 41Ba.

  A rotating pleat filter body 61 is disposed in the second dust collecting chamber 60, and the downstream side of the rotating pleat filter body 61 is communicated with the communication air duct 35.

  The rotating pleated filter body 61 includes a cylindrical storage case 62, a cylindrical holding frame 63 (not shown) rotatably mounted in the storage case 61, and a radial position from the center position of the holding frame 63. And a pleated filter 64 in which pleats are formed.

  A gear 65 is formed on the holding frame 63, and the gear 65 projects outward from the storage case 62. The gear 65 is engaged with a drive gear 67 mounted on a drive shaft 66 a of the motor 66. The filter 64 rotates.

  The second dust collecting chamber 60 is provided with a nozzle (air blowing means) 68 (see FIG. 1) toward the pleat filter 64, and the nozzle 68 ejects outside air toward the pleat filter 64. It has become. The nozzle 68 is provided with an opening / closing valve (electromagnetic valve) 69, and the opening / closing of the opening / closing valve 69 causes the outside air to be blown or not blown to the pleated filter 64.

  A switching valve (first and second opening / closing means) 38, which is an electromagnetic valve, is provided at the junction of the bypass air passage 36 and the communication air passage pipe 35. When the switching valve 38 is switched to the broken line position, the communication air duct 35 is closed and the bypass air duct 36 is opened. When the switching valve 38 is switched to the solid line position, the bypass air passage 36 is closed and the communication air passage pipe 35 is opened.

A hand operating unit (not shown) is provided on the upper portion of the handle 100, and the hand operating unit is provided with a strength setting switch, an off switch, and the like of the electric blower 33.
[Operation]
Next, operation | movement of the vacuum cleaner 20 comprised as mentioned above is demonstrated. When the power is off (when the drive of the electric blower 33 is stopped), the on-off valve 69 is closed, the on-off valve 32 is opened, and the switching valve 38 is switched to the solid line position. That is, the bypass air passage 36 is closed and the nozzle 68 is closed.

  When the strength setting switch at the hand of the handle 100 is operated, the electric blower 33 is driven. By driving the electric blower 33, air is sucked from the suction opening 33 </ b> A of the electric blower 33, and negative pressure acts on the first dust collection chamber 40 through the communication air duct 35 and the second dust collection chamber 60. Furthermore, it acts on the suction chamber of the suction port body 21 via the suction air duct 31, and dust is sucked into the suction air duct 31 along with air from the suction mouth 21.

  The dust and air sucked into the suction air duct 31 are directed from the mouth portion 31A of the suction air duct 31 toward the first and second cylindrical portions 44 and 45 of the dust separation portion 42 of the first dust collecting chamber 40. I will blow out.

  The dust and air blown toward the first cylindrical portion 44 are introduced into the second cylindrical portion 45 through the notch 44K of the first cylindrical portion 44 and blown toward the second cylindrical portion 45. Dust and air are introduced into the dust collecting portion 43 through the notch 45K of the second cylindrical portion 45. As a result, dust and air flow clockwise in the second cylindrical portion 45 (counterclockwise in FIG. 3) as indicated by the arrows in FIG.

  On the other hand, part of the air blown toward the first cylindrical portion 44 passes through the net filter N1 and the front wall portion 47 (see FIG. 5) of the first and second cylindrical portions 44 and 45 and the dust collecting chamber. The air is sucked into the connection opening 41Ba of the dust collection chamber case 41 through a gap between the side wall portion 41D of the case 41 and the side wall portion 41D.

  On the other hand, the dust and air introduced into the dust collecting unit 43 are separated here, and the dust is collected in the dust collecting unit 43.

  Further, the air separated from the dust passes through the net filter N2 as shown by the arrow in FIG. 1 and is connected to the dust collection chamber case 41 through the bottom air passage 49 and the guide air passage 46 of the first dust collection chamber 40. It is sucked into the opening 41Ba.

  The air sucked into the connection opening 41Ba of the dust collecting chamber case 41 is introduced into the second dust collecting chamber 60 and further sucked into the communication air duct 35 through the pleated filter 64 of the rotating pleated filter body 61. The pleated filter 64 captures fine dust that has passed through the net filter N2 when air passes.

  The air sucked into the communication air duct 35 is further sucked into the suction opening 33 </ b> A of the electric blower 33. The air sucked into the suction opening 33 </ b> A of the electric blower 33 passes through the electric blower 33 and is exhausted from the exhaust port 33 </ b> H, and is exhausted to the outside from an exhaust port (not shown) of the cleaner body 30.

  By the way, when normal cleaning is performed, that is, when the above operation is performed, the motor 55 of the vibration mechanism 51 is driven to move the moving plate 52 back and forth in the left-right direction (in FIG. 5). Due to the movement, the projection 52T of the moving plate 52 climbs over the peak portion of the pleat filter 50. When the projection 52T hits the peak portion of the next pleat filter 50, the projection 52T strikes the peak portion of the next pleat filter 50. The dust adhering to the pleated filter 50 is shaken off.

  When vibration is applied to the pleat filter 50, the protrusion 52T of the moving plate 52 hits the peak portion of the pleat filter 50, so that a hitting sound is generated. However, since the noise due to the driving of the electric blower 33 is larger, this hitting Sound doesn't matter.

  And if the switch off of the hand operation part of the handle | steering-wheel 100 is operated, the electric air blower 33 will be driven with a weaker power than a weak operation. For this reason, the noise by the drive of the electric blower 33 becomes small.

  Further, by operating the switch, the switching valve 38 is switched to the solid line position shown in FIG. 7 (the broken line position in FIG. 1), the bypass air passage 36 is opened, and the communication air passage pipe upstream from the bypass air passage 36 position. 35 is closed. Further, the on-off valve 32 (see FIG. 2) is closed, and the on-off valve 69 is opened.

  By closing the on-off valve 32 and opening the on-off valve 69, outside air is ejected from the nozzle 68 toward the pleat filter 64 of the rotary pleat filter body 61 as shown in FIG. It will be dropped. At this time, the motor 66 is driven to rotate the pleated filter 64, and the outside air is blown from the nozzle 68 over the entire pleated filter 64. Thereby, dust can be dropped over the entire pleated filter 64.

  The outside air blown to the pleated filter 64 is guided through the connection opening 41Ba of the dust collection chamber case 41 as shown by the arrow in FIG. 7 because the communication air duct 35 is closed by the switching valve 38. The air is sucked into the air passage 46 and further sucked into the bypass air passage 36 through the pleated filter 50 of the bypass opening 41Bb.

  At this time, the outside air largely detours by the guide wall GK2 as indicated by the arrow Q1, and by this detour, the outside air and the fine dust dropped from the pleat filter 64 are separated, and the fine dust is collected in the dust collecting chamber case 41. From the connection opening 41Ba to the bottom wall 41C of the dust collection chamber case 41.

  The outside air sucked into the bypass air passage 36 is sucked into the suction opening 33 </ b> A of the electric blower 33 through the communication air passage pipe 35.

  As described above, when the noise caused by driving the electric blower 33 is low, the outside air is blown from the nozzle 68 to drop the dust attached to the pleat filter 64. It does not occur and is therefore quiet at the end of cleaning. Moreover, since the dropped dust falls from the connection opening 41Ba of the dust chamber case 41 to the bottom wall portion 41C of the dust chamber case 41, the dust dropped from the pleated filter 64 is reduced to the first dust chamber 40, that is, A complicated configuration for introduction into the dust collection chamber case 41 is not necessary.

  When the outside air passes through the pleated filter 50 in the bypass opening 41Bb, a part of fine dust dropped from the pleated filter 64 is captured by the pleated filter 50. The fine dust captured by the pleated filter 50 is shaken off by the vibration mechanism 51 as described above.

  When a predetermined time elapses after the switch operation is performed, the driving of the electric blower 33 is stopped, the opening / closing valve 69 is closed, the opening / closing valve 32 is opened, and the switching valve 38 is switched to the broken line position. .

In order to dispose of the dust collected in the dust collecting part 43 of the dust collecting chamber case 41 and the dust accumulated in the bottom wall part 41C of the dust collecting chamber case 41, the dust collecting chamber case 41 is removed from the cleaner body 30. Throw away.
[Second Embodiment]
8 and 9 show a vacuum cleaner 120 of the second embodiment. The vacuum cleaner 120 circulates the air exhausted from the exhaust port 33 </ b> B of the electric blower 33 and blows air from the air circulation path 121 toward the pleated filter 64 of the rotating pleated filter body 61. A nozzle 168 is provided. Reference numeral 169 denotes a switching valve (open / close valve) that switches between a solid line position and a broken line position. During normal cleaning, the switching valve 169 switches to the solid line position and exhausts from the exhaust port 33B of the electric blower 33. The air thus discharged is exhausted from the exhaust port 30 </ b> H of the cleaner body 30 through the branch pipe 122. The open / close states of the other on-off valves 32 and the switching valve 38 are the same as in the first embodiment.

  When the turn-off switch of the hand operating part of the handle 100 is operated, the switching valve 169 is switched to the broken line position, the switching valve 38 is switched to the solid line position, the on-off valve 32 is opened, and the exhaust port 33B of the electric blower 33 is opened. The air exhausted from the nozzle is blown toward the pleated filter 64 from the nozzle 168 via the circulation air passage 121. Since other operations are the same as those in the first embodiment, description thereof will be omitted.

  In any of the above embodiments, dust adhered to the pleat filter 64 is dropped by one nozzle 68, 168. However, the entire pleat filter 64 may be sprayed by a plurality of nozzles. In this case, a mechanism for rotating the pleated filter 64 is not necessary.

It is explanatory drawing which showed notionally the structure of the vacuum cleaner which concerns on this invention. It is the cross-sectional view shown notionally which showed the structure of the vacuum cleaner shown in FIG. It is the cross-sectional perspective view which showed the structure of the 1st dust collection case. It is the other section perspective view showing the composition of the 1st dust collection case. It is another cross-sectional perspective view which showed the structure of the 1st dust collection case. It is explanatory drawing which showed the structure of the vibration mechanism. It is explanatory drawing which showed the flow of external air. It is explanatory drawing which showed notionally the structure of the vacuum cleaner of 2nd Example. It is the cross-sectional view which showed the structure of the vacuum cleaner shown in FIG.

Explanation of symbols

31 Suction air duct 32 Open / close valve (third open / close means)
33 Electric blower 33A Suction opening 35 Communication air duct pipe 36 Bypass air duct pipe 38 Switching valve (first and second opening / closing means)
40 First dust collection chamber 41Ba Connection opening 50 Pleated filter (filter)
60 Second dust collection chamber 64 Pleated filter 68 Nozzle (air blowing means)

Claims (4)

An electric blower for sucking dust from a dust suction port, first dust separation means for separating dust and air sucked into the dust suction port, and a pleated filter for separating dust and air that have passed through the first dust separation means A first dust chamber in which the first dust separation means is disposed, a second dust chamber that is provided above the first dust chamber and in which the pleat filter is disposed, a downstream side of the pleat filter, and the electric motor A vertical vacuum cleaner having a communication air passage communicating with a suction opening of a blower,
Air blowing means is provided for blowing dust onto the pleated filter to remove dust attached thereto,
The first dust collection chamber and the second dust collection chamber communicate with each other, and an opening for introducing dust dropped from the pleated filter into the first dust chamber is provided in an upper portion of the first dust collection chamber.
Providing a bypass air passage communicating the upper part of the first dust collecting chamber and the communication air passage;
A filter is installed in this bypass air passage,
A first opening / closing means for opening / closing the bypass air passage; a second opening / closing means for opening / closing a communication air passage upstream of the joining position where the bypass air passage joins; the dust inlet and the first dust collecting chamber; Providing a third opening / closing means for opening and closing the communicating suction air passage;
During cleaning, the first opening / closing means is closed, the second and third opening / closing means are opened,
A vertical vacuum cleaner that opens the first opening and closing means, closes the second and third opening and closing means, and operates the air blowing means during non-cleaning. The pleat filter is rotatably provided,
The vertical vacuum cleaner according to claim 1, wherein the pleated filter is rotated during operation of the air blowing means. The filter is provided at a position facing the first dust collection chamber,
Vibrating means for vibrating the filter and dropping dust adhering to the filter is provided,
The vertical vacuum cleaner according to claim 1 or 2, wherein the vibration means is operated during cleaning.   The vertical vacuum cleaner according to any one of claims 1 to 3, wherein the air blowing means blows exhaust air from the electric blower onto the pleated filter.

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