EP2211678B1 - Electric vacuum cleaner - Google Patents
Electric vacuum cleaner Download PDFInfo
- Publication number
- EP2211678B1 EP2211678B1 EP08855539.6A EP08855539A EP2211678B1 EP 2211678 B1 EP2211678 B1 EP 2211678B1 EP 08855539 A EP08855539 A EP 08855539A EP 2211678 B1 EP2211678 B1 EP 2211678B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric
- electric blower
- blowers
- vacuum cleaner
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
- A47L9/281—Parameters or conditions being sensed the amount or condition of incoming dirt or dust
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
- A47L9/2821—Pressure, vacuum level or airflow
Definitions
- the present invention relates to an electric vacuum cleaner including a plurality of electric blowers.
- Such kinds of electric vacuum cleaners have conventionally included a vacuum cleaner main body with a plurality of electric blowers housed in parallel therein.
- a dust collecting chamber is provided with which suction sides of the electric blowers commonly communicate.
- a controlling portion as a controlling means for making the electric blowers independently drive is provided (see, for example, Patent Citation 1).
- Patent Citation 1 Japanese Laid-Open Patent Publication No. 2007-20765
- EP-1629762A discloses a vacuum cleaner in which a plurality of electric blowers are housed in a common housing, with a common dust collecting chamber, with each blower being capable of being driven independently of the other.
- the present invention has been made in view of the above problem, and aims at providing an electric vacuum cleaner capable of securing the suction power even in the case where any one of the plurality of electric blowers is driven.
- An electric vacuum cleaner of the present invention includes: a vacuum cleaner main body with a plurality of electric blowers housed therein within separate electric blower chambers; a common dust collecting chamber which communicates with a suction side of each of the electric blowers; a controlling means capable of making the electric blowers independently drive; and backflow preventing means in the form of opening-closing means which are provided in accordance with the electric blowers and prevent air from flowing backward to the dust collecting chamber side by opening and closing by a pressure difference between the upstream side and the downstream side.
- backflow preventing means provided in accordance with the electric blowers prevent air from being sucked into a dust collecting chamber side from the other stationary electric blowers, and suction power can be secured.
- the reference symbol 1 denotes a vacuum cleaner main body
- the vacuum cleaner main body 1 includes a hollow main body case 2.
- the inside of the main body case 2 is partitioned, by a partitioning wall 8, into a dust collecting chamber 4 which is located at the front end of the inside and to/from which a dust collecting pack 3 as a filter is attached/detached, electric blowers 5A, 5B located at the rear side thereof (hereinafter, at least either of the electric blowers 5A, 5B, or as a whole, will be sometimes simply referred to as an electric blower 5) and an electric blower chamber 7 with a controlling means 6 and a cord reel (not shown) housed therein.
- a main body suction port 11 communicating with the dust collecting chamber 4 is opened in the front of the main body case 2, and a hose body 12 as a slender and approximately cylindrical connection tube capable of bending is communication-connected with the main body suction port 11.
- a hand operating part 13 for selecting an operation mode of the electric blower 5 is provided at the top end of the hose body 12, a plurality of setting buttons 14 each for setting a driving state, operation mode, of the electric blower 5 and the like to a predetermined state are provided on the hand operating part 13, and a gripping part 15 to be gripped by a worker in cleaning is protruded on a base end side of the hand operating part 13.
- a slender and approximately cylindrical extension tube 16 capable of telescoping is attachably/detachably communication-connected with the top end of the hand operating part 13.
- a floor brush 17 as a suction port body which is put on, for example, a carpet to be cleaned on a floor surface and sucks dust on the carpet, is attachably/detachably communication-connected with the top end of the extension tube 16.
- the main body case 2 includes: a lower case 21 with a partitioning wall 8 and an opened upper side; a lid body 22 for opening and closing an upper portion of the dust collecting chamber 4 located at the front side of the lower case 21; and an upper case 23 for closing an upper portion of the electric blower chamber 7 located at the rear side of the lower case 21. Additionally, many exhaust holes 24 are bored in the main body case 2.
- Traveling wheels 25 having a large diameter for traveling the vacuum cleaner main body 1 on the floor surface are rotatably and pivotally supported on both sides of the electric blower chamber 7 located at the rear side of the lower case 21, and a turn wheel (not shown) as a driven wheel is turnably provided on a bottom, which faces the floor surface, of the dust collecting chamber 4 located at the front side of the lower case 21.
- the dust collecting pack 3 is, for example, a disposable paper pack, and includes a mouth frame (not shown) to be fixed to the dust collecting chamber 4 and a pack body 28 in the form of pouch attached to the mouth frame.
- the dust collecting chamber 4 is formed commonly to the electric blowers 5A, 5B.
- the electric blower 5 includes a centrifugal fan 31 and a motor 32 for rotating the centrifugal fan 31, and the centrifugal fan 31 and the motor 32 are housed in a cylindrical body case 33. Additionally, the electric blowers 5A, 5B have centrifugal fans 31 on the front side and motors 32 on the rear side respectively, and juxtaposed in the electric blower chamber 7 in its width direction.
- the motor 32 is driven by electric power fed from the outside.
- the cylindrical body case 33 includes an approximately cylindrical case main body 33a having a closed rear side and an opened front side, and a fan cover 33b engaged with the end of the opened front side of the case main body 33a.
- the motor 32 is housed in the case main body 33a, and the centrifugal fan 31 is housed in the fan cover 33b.
- a plurality of quadrangular exhaust ports 33c communicating with the electric blower chamber 7 are opened in the case main body 33a, and a circlular suction port 33d communicating with the dust collecting chamber 4 is opened at the center of the front end of the fan cover 33b.
- the rear end of the case main body 33a is elastically supported on the main body case 2 (lower case 21) by a rear portion supporting rubber (not shown) as an elastic supporting member
- a circumferential edge of the fan cover 33b is elastically supported on the main body case 2 (lower case 21) by an annular front portion supporting rubber 36 which is a sealing member as an elastic supporting member
- the suction port 33d is airtightly connected to the dust collecting chamber 4 via the partitioning wall 8 so as not to communicate with the electric blower chamber 7.
- the controlling means 6 is a circuit board including a switching element such as a triac, and the like, and can make the electric blowers 5A, 5B independently drive by phase angle control in accordance with an operation mode input with the setting button 14. For example, in an operation mode, such as a weak mode, for applying relatively small suction power (operation mode for applying suction power half or less of full power), the controlling means 6 drives either of the electric blowers 5A, 5B and stops the other, and in an operation mode, such as a strong mode, for applying relatively large suction power (operation mode for applying suction power half or more of full power), the controlling means 6 drives both the electric blowers 5A, 5B.
- a switching element such as a triac, and the like
- a power cord (not shown) having a plug portion at its top end is wound around the cord reel so as to be freely pulled out.
- the electric blower chamber 7 is formed commonly to the electric blowers 5A, 5B and communicates with the outside of the main body case 2 via the exhaust holes 24.
- Round communication holes 41A, 41B making the dust collecting chamber 4 and the electric blower chamber 7 communicate with each other and each having a large diameter are opened in the partitioning wall 8 at positions facing the front sides of the electric blowers 5A, 5B respectively.
- Filters 42A, 42B are attached to the upstream sides, front portions, of the communication holes 41A, 41B respectively, and check valve units 43A, 43B are attached to the rear portions of the communication holes 41A, 41B respectively, the valve unit being an opening-closing means as a backflow preventing means.
- the communication holes 41A, 41B, or as a whole will be sometimes simply referred to as a communication hole 41
- at least either of the filters 42A, 42B, or as a whole will be sometimes simply referred to as a filter 42
- at least either of the check valve units 43A, 43B, or as a whole will be sometimes simply referred to as a check valve unit 43.
- the upstream side, front portion, of the communication hole 41 is covered with the filter 42.
- the filter 42 collects dust which cannot be collected by the dust collecting pack 3.
- a plurality of opening-closing valve bodies 46 are rotatably attached to a frame 45.
- the frame 45 includes, integrally in an axis direction, front and rear direction, a cylindrical frame 48 as a cylindrical first frame located at the upstream side and an angular tube-shaped frame 49 as an angular tube-shaped second frame located at the downstream side.
- the cylindrical frame 48 is airtightly connected to the downstream side of the communication hole 41.
- the angular tube-shaped frame 49 communicates with the downstream side of the cylindrical frame 48, faces the suction port 33d of the electric blower 5, is to be airtightly connected to the suction ports 33d, and includes upper wall 49a and lower wall 49b for vertically partitioning the inside of the main body case 2, and side walls 49c, 49c continuing to the upper wall 49a and lower wall 49b and for horizontally partitioning the inside.
- Round holes 51 each for pivotally supporting the opening-closing valve body 46 rotatably are bored in the side walls 49c, 49c.
- the holes 51 are vertically arranged approximately in a straight line.
- Each opening-closing valve body 46 is a flap portion formed of a relatively light member such as synthetic resin and in a laterally-long and quadrilateral plate shape, and the upper portions of both sides thereof are respectively inserted into the hole 51 so that the valve body 46 is pivotally supported so as to be rotatable in the front and rear direction (vertical direction). Further, the opening-closing valve bodies 46 are successively arranged vertically at an approximate interval, and the vertical size thereof is set so as to be larger than an interval between the holes 51, 51. Accordingly, a lower end 46a of the upper opening-closing valve body 46 can come into contact with a rear portion on the upper end side of the lower opening-closing valve body 46.
- each opening-closing valve body 46 rotates backward and upward so as to be approximately horizontal by negative pressure of the corresponding driving electric blower 5, and opens the angular tube-shaped frame 49.
- the lower end 46a side rotates forward and downward by its own weight and the valve body 46 closes.
- each opening-closing valve body 46 can be opened and closed by a pressure difference (wind power) between the upstream side and downstream side.
- the gripping part 15 of the hand operating part 13 of the hose body 12 connected to the main body suction port 11 is gripped, and a predetermined setting button 14 is operated.
- a control circuit in the vacuum cleaner main body 1 drives the motor 32 and rotates the centrifugal fans 31 so that the negative pressure is generated.
- the floor brush 17 connected to the top end side of the hose body 12 via the extension tube 16 is moved backward and forward on the floor surface with the gripping part 15.
- the controlling means 6 drives either of the electric blowers 5A or 5B in a predetermined order.
- the controlling means 6 drives not the electric blower 5 first driven in the preceding drive but the other electric blower 5. That is, in the case where the electric blower 5A is first driven in the preceding drive, the electric blower 5B is first driven in this drive, and in the case where the electric blower 5B is first driven in the preceding drive, the electric blower 5A is first driven in this drive. Moreover, in the case where both the electric blowers 5A, 5B are simultaneously driven in the preceding drive, whichever of the electric blowers 5A, 5B may be first driven.
- each opening-closing valve body 46 closed by rotation downward of the lower end 46a by its own weight is sucked to the upstream side
- the lower end 46a of each opening-closing valve body 46 is sucked to the upper end side of the underlying opening-closing valve body 46
- the lower end 46a of the lowest opening-closing valve body 46 is sucked to the step part 49d
- the inside of the frame 45 is closed, as indicated by the solid lines in Figs. 4(a) and 4(b) , and air is prevented from flowing backward from the exhaust port 33c to the suction port 33d of the electric blower 5B.
- each opening-closing valve body 46 since the pressure of the upstream side of each opening-closing valve body 46 is larger than that of the downstream side thereof in the check valve unit 43A, the lower end 46a of each opening-closing valve body 46 rotates backward and upward around the upper end side thereof until each opening-closing valve body 46 becomes approximately horizontal, the inside of the frame 45 is opened, and air is sucked into only the electric blower 5A from the main body suction port 11 side via the dust collecting chamber 4, as indicated by the imaginary lines in Figs. 4(a) and 4(b) .
- each opening-closing valve body 46 closed by rotation downward by its own weight of the lower end 46a is sucked to the upstream side
- the lower end 46a of each opening-closing valve body 46 is sucked to the upper end side of the underlying opening-closing valve body 46
- the lower end 46a of the lowest opening-closing valve body 46 is sucked to the step part 49d
- the inside of the frame 45 is closed, as indicated by the solid lines in Figs. 4(a) and 4(b) , and air is prevented from flowing backward from the exhaust port 33c to suction port 33d of the electric blower 5A.
- each opening-closing valve body 46 since the pressure of the upstream side of each opening-closing valve body 46 is larger than that of the downstream side thereof in the check valve unit 43B, the lower end 46a of each opening-closing valve body 46 rotates backward and upward around the upper end side thereof until each opening-closing valve body 46 becomes approximately horizontal, the inside of the frame 45 is opened, and air is sucked into only the electric blower 5B from the main body suction port 11 side via the dust collecting chamber 4, as indicated by the imaginary lines in Figs. 4(a) and 4(b) .
- the controlling means 6 drives both the electric blowers 5A, 5B as shown in Fig. 3 .
- each opening-closing valve body 46 since the pressure of the downstream side of each opening-closing valve body 46 becomes larger than that of the upstream side thereof in the check valve units 43A, 43B, the lower end 46a of each opening-closing valve body 46 rotates backward and upward around the upper end side thereof until each opening-closing valve body 46 becomes approximately horizontal, the inside of the frame 45 is opened, and air is sucked into the electric blowers 5A, 5B from the main body suction port 11 side via the dust collecting chamber 4, as indicated by the imaginary lines in Figs. 4(a) and 4(b) .
- the check valve unit 43B or 43A as a backflow preventing means, the units 43A, 43B being provided on the electric blowers 5A, 5B respectively, prevents air from being sucked into the dust collecting chamber 4 side from the other stationary electric blower 5, electric blower 5B or 5A, the negative pressure of the electric blower 5 can be completely applied to the floor brush 17 side from the main body suction port 11, and thus suction power can be secured.
- the check valve unit 43 which is an opening-closing means, is adopted as a backflow preventing means, the backflow preventing means can be easily realized.
- check valve unit 43 is opened and closed by the pressure difference between the upstream side and downstream side, no power source, such as a motor, for opening and closing the check valve unit 43 is required to be provided separately, the structure of the electric vacuum cleaner can be simplified, costs are reduced, and power can be saved.
- the check valve unit 43 since the check valve unit 43 includes the flap-shaped opening-closing valve body 46, which rotates downward by its own weight by stopping of the electric blower 5 and closes, the check valve unit 43 can be easily realized.
- the check valve unit 43 can be easily built in the vacuum cleaner main body 1 since the frame 45 and each opening-closing valve body 46 are integrally made as a unit.
- the electric blowers 5A, 5B are driven at a predetermined order, for example alternately, for each start of the electric vacuum cleaner, and thus the lives of the electric blowers 5A, 5B can be made approximately twice.
- the suction power can be improved compared with the case where one electric blower is used, and efficiency is improved compared with the case where the same suction power is obtained by one electric blower.
- the electric blower chamber 7 is partitioned into electric blower chambers 7A, 7B corresponding to the electric blowers 5A, 5B respectively, and the check valve units 43A, 43B are attached to the upstream sides of the electric blower chambers 7A, 7B respectively in the first embodiment.
- a partitioning wall 55 is formed on the partitioning wall 8 so as to continue approximately straight from the rear portion of the partitioning wall 8 to the rear portion of the main body case 2, and the electric blower chamber 7 is partitioned into the electric blower chambers 7A, 7B by the partitioning wall 55.
- the electric blower chambers 7A, 7B communicate with the exhaust sides (downstream sides) of the electric blowers 5A, 5B via the exhaust ports 33c respectively.
- the controlling means 6 drives the electric blower 5A as shown in Fig. 7 , or drives the electric blower 5B as shown in Fig. 8 , and thus the pressure of the downstream side becomes larger than that of the upstream side in the check valve unit 43B or 43A, each opening-closing valve body 46 rotates downward to close, and air is prevented from flowing backward from the electric blower 5B or 5A and sucked into only the electric blower 5A or 5B from the main body suction port 11 side via the dust collecting chamber 4.
- the controlling means 6 drives both the electric blowers 5A, 5B as shown in Fig. 9 , and thus the pressure of the upstream side becomes larger than that of the downstream side in the check valve units 43A, 43B, each opening-closing valve body 46 opens, and air is sucked into the electric blowers 5A, 5B from the main body suction port 11 side via the dust collecting chamber 4.
- the electric blower chamber 7 is partitioned into the electric blower chambers 7A, 7B in accordance with the electric blowers 5A, 5B, airtightness between the electric blowers 5A, 5B and the electric blower chamber 7 can be easily secured and air leakage in the driving of the electric blower 5 can be more reliably prevented.
- the controlling means 6 can perform control for driving either of the electric blowers 5 and stopping the other electric blower 5, and control for driving all the electric blowers 5 in the first embodiment.
- the controlling means 6 drive-controls the electric blowers 5 so that either of the electric blowers 5 is driven prior to the other electric blower 5.
- the check valve unit 43 is arranged in accordance with the other electric blower 5.
- the controlling means 6, for example in the case where the electric blower 5A is constantly driven and shifting to the operation mode for applying relatively large suction power is made in cleaning, can properly drive the electric blower 5B additionally as necessary, and a check valve unit 43C, which is an opening-closing means as a backflow preventing means, is arranged in accordance with only the electric blower 5B. In other words, driving order is set to the electric blower 5.
- check valve unit 43C is similar in constitution to the check valve unit 43 of the first embodiment.
- the controlling means 6 drives the electric blower 5A, and thus the pressure of the downstream side becomes larger than that of the upstream side in the check valve unit 43C, each opening-closing valve body 46 rotates downward to close, and air is prevented from flowing backward from the electric blower 5B and sucked into only the electric blower 5A from the main body suction port 11 side via the dust collecting chamber 4.
- the controlling means 6 drives both the electric blowers 5A, 5B as shown in Fig.
- each opening-closing valve body 46 opens, and air is sucked into the electric blowers 5A, 5B from the main body suction port 11 side via the dust collecting chamber 4.
- the check valve unit 43C provided in accordance with the other electric blower 5 (electric blower 5B) prevents air from being sucked into the dust collecting chamber 4 side from the other stopping electric blower 5 (electric blower 5B), the negative pressure of the electric blower 5 is completely applied to the floor brush 17 side from the main body suction port 11, the suction power can be secured, for example, and the operation-effect similar to that of the first embodiment can be obtained.
- the electric blower 5A is constantly driven in cleaning
- control of the driving of the electric blower 5 by the controlling means 6 can be simplified and the check valve unit 43 may be provided on either of the electric blowers 5, compared with the case where drive switching is made between the electric blowers 5A, 5B.
- the electric vacuum cleaner can be simplified.
- controlling means 6 can perform control for driving either of the electric blowers 5 and stopping the other electric blower 5, and the check valve unit 43 is arranged in accordance with the downstream side of the other electric blower 5, in the second and third embodiments.
- the controlling means 6 drives the electric blower 5A prior to the electric blower 5B, and the check valve unit 43C is arranged on the downstream side of the electric blower 5B of the electric blower chamber 7B corresponding to the electric blower 5B.
- controlling means 6, for example, in the case of constantly driving the electric blower 5A and shifting to the operation mode for applying relatively large suction power in cleaning, can properly drive the electric blower 5B additionally as necessary.
- the controlling means 6 drives the electric blower 5A as shown in Fig. 12 , and thus the pressure of the downstream side becomes larger than that of the upstream side in the check valve unit 43C, each opening-closing valve body 46 rotates downward to close, and air is prevented from flowing backward from the electric blower 5B and sucked into only the electric blower 5A from the main body suction port 11 side via the dust collecting chamber 4.
- the controlling means 6 drives both the electric blowers 5A, 5B as shown in Fig.
- each opening-closing valve body 46 opens, and air is sucked into the electric blowers 5A, 5B from the main body suction port 11 side via the dust collecting chamber 4.
- the two electric blowers 5 are used in the third and fourth embodiments, three or more electric blowers 5 can be similarly used.
- control can be performed that one of the electric blowers 5 is constantly driven and the other plurality of electric blowers 5 are stopped, or that the plurality of electric blowers 5 are constantly driven and the other electric blowers 5 are stopped.
- backflow preventing means can be provided in accordance with the other plurality of electric blowers 5 respectively.
- one backflow preventing means can be provided for a group of the electric blowers 5.
- the controlling means 6 drives, in driving any of the electric blowers 5, the other electric blower 5 so that air is prevented from flowing backward.
- the controlling means 6, drives the electric blower 5B (electric blower 5A) at a low speed so that air is prevented from flowing backward to the dust collecting chamber 4 side via the electric blower 5B (electric blower 5A).
- the controlling means 6 detects the pressure in the electric blower chamber 7 by a blower chamber inner pressure detecting means (not shown) provided in the electric blower chamber 7, detects the pressure in the dust collecting chamber 4 by a dust collecting chamber inner pressure detecting means (not shown) provided in the dust collecting chamber 4, and drives, in driving either of the electric blowers 5 (electric blower 5A or 5B), the other electric blower 5 (electric blower 5B or 5A) so that a difference between the detected pressures in the dust collecting chamber 4 and electric blower chamber 7 is controlled.
- air is sucked into the electric blower 5A or 5B from the main body suction port 11.
- the controlling means 6, drives both the electric blowers 5A, 5B so that air is sucked into the electric blowers 5A, 5B from the main body suction port 11.
- the controlling means 6 drives the other electric blower 5 so that air is prevented from flowing backward, and thus the air is prevented from being sucked into the dust collecting chamber 4 side and the negative pressure of the electric blower 5 is completely applied to the floor brush 17 side from the main body suction port 11. Therefore, an operation-effect, such as securing of the suction power, similar to that of each of the above embodiments can be obtained.
- the controlling means 6 is adapted to be capable of driving any of the electric blower 5 constantly and stopping the other electric blower 5 in cleaning in the fifth embodiment similar to the third embodiment or fourth embodiment, not only can the same operation-effect be obtained but also a controlling method of the controlling means 6 can be simplified in constitution.
- a sealing member which, when the opening-closing valve bodies 46 are closed, comes into airtight contact with the upstream sides of the closed opening-closing valve bodies 46 may be provided in the angular tube-shaped frame 49.
- the present invention is used for, for example, household electric vacuum cleaners.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Electric Suction Cleaners (AREA)
- Electric Vacuum Cleaner (AREA)
Description
- The present invention relates to an electric vacuum cleaner including a plurality of electric blowers.
- Such kinds of electric vacuum cleaners have conventionally included a vacuum cleaner main body with a plurality of electric blowers housed in parallel therein. In the vacuum cleaner main body, a dust collecting chamber is provided with which suction sides of the electric blowers commonly communicate. Additionally, in the vacuum cleaner main body, a controlling portion as a controlling means for making the electric blowers independently drive is provided (see, for example, Patent Citation 1). [Patent Citation 1]: Japanese Laid-Open Patent Publication No.
2007-20765 -
EP-1629762A discloses a vacuum cleaner in which a plurality of electric blowers are housed in a common housing, with a common dust collecting chamber, with each blower being capable of being driven independently of the other. - However, there has been a problem that, in the above electric vacuum cleaner, in the case where, for example, either of the electric blowers is driven and the other electric blower is stationary, negative pressure of the driving electric blower makes air flow backward from an exhaust side to a suction side of the non-driving electric blower and forms an air passage, through which the air is sucked into a suction side of the driving electric blower, and suction power cannot be secured.
- The present invention has been made in view of the above problem, and aims at providing an electric vacuum cleaner capable of securing the suction power even in the case where any one of the plurality of electric blowers is driven.
- An electric vacuum cleaner of the present invention includes: a vacuum cleaner main body with a plurality of electric blowers housed therein within separate electric blower chambers; a common dust collecting chamber which communicates with a suction side of each of the electric blowers; a controlling means capable of making the electric blowers independently drive; and backflow preventing means in the form of opening-closing means which are provided in accordance with the electric blowers and prevent air from flowing backward to the dust collecting chamber side by opening and closing by a pressure difference between the upstream side and the downstream side.
- According to the present invention, even in the case where any one of a plurality of electric blowers is driven, backflow preventing means provided in accordance with the electric blowers prevent air from being sucked into a dust collecting chamber side from the other stationary electric blowers, and suction power can be secured.
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- [
Fig. 1] Fig. 1 is an explanatory plan view showing an electric vacuum cleaner of a first embodiment in which only one of electric blowers is driven. - [
Fig. 2] Fig. 2 is an explanatory plan view showing the electric vacuum cleaner in which only the other electric blower is driven. - [
Fig. 3] Fig. 3 is an explanatory plan view showing the electric vacuum cleaner in which all the electric blowers are driven. - [
Fig. 4] Fig. 4(a) is a vertical cross sectional view showing a backflow preventing means of the electric vacuum cleaner.Fig. 4(b) is an enlarged vertical cross sectional view showing a part of the backflow preventing means. - [
Fig. 5] Fig. 5 is a perspective view of the backflow preventing means. - [
Fig. 6] Fig. 6 is a perspective view of the electric vacuum cleaner. - [
Fig. 7] Fig. 7 is an explanatory plan view showing an electric vacuum cleaner of a second embodiment in which only one of the electric blowers is driven. - [
Fig. 8] Fig. 8 is an explanatory plan view showing the electric vacuum cleaner in which only the other electric blower is driven. - [
Fig. 9] Fig. 9 is an explanatory plan view showing the electric vacuum cleaner in which all the electric blowers are driven. - [
Fig. 10] Fig. 10 is an explanatory plan view showing an electric vacuum cleaner of a third embodiment in which only one of the electric blowers is driven. - [
Fig. 11] Fig. 11 is an explanatory plan view showing the electric vacuum cleaner in which all the electric blowers are driven. - [
Fig. 12] Fig. 12 is an explanatory plan view showing an electric vacuum cleaner of a fourth embodiment in which only one of the electric blowers is driven. - [
Fig. 13] Fig. 13 is an explanatory plan view showing the electric vacuum cleaner in which all the electric blowers are driven. - [
Fig. 14] Fig. 14 is an explanatory plan view showing an electric vacuum cleaner of a fifth embodiment in which one of the electric blowers is driven and the other electric blower is subjected to backflow-preventing-driving. - [
Fig. 15] Fig. 15 is an explanatory plan view showing the electric vacuum cleaner in which one of the electric blowers is subjected to the backflow-preventing-driving and the other electric blower is driven. - [
Fig. 16] Fig. 16 is an explanatory plan view showing the electric vacuum cleaner in which all the electric blowers are driven. -
- 1 Vacuum cleaner main body
- 4 Dust collecting chamber
- 5A, 5B Electric blower
- 6 Controlling means
- 43A, 43B, 43C Check valve unit being opening-closing means as backflow preventing means
- 46 Opening-closing valve body
- Hereinafter, an electric vacuum cleaner of a first embodiment of the present invention will be described with reference to
Figs. 1 to 6 . - In
Figs. 1 to 3 and6 , thereference symbol 1 denotes a vacuum cleaner main body, and the vacuum cleanermain body 1 includes a hollowmain body case 2. The inside of themain body case 2 is partitioned, by a partitioningwall 8, into adust collecting chamber 4 which is located at the front end of the inside and to/from which a dust collectingpack 3 as a filter is attached/detached,electric blowers electric blowers electric blower chamber 7 with a controllingmeans 6 and a cord reel (not shown) housed therein. Additionally, a mainbody suction port 11 communicating with thedust collecting chamber 4 is opened in the front of themain body case 2, and ahose body 12 as a slender and approximately cylindrical connection tube capable of bending is communication-connected with the mainbody suction port 11. Further, ahand operating part 13 for selecting an operation mode of theelectric blower 5 is provided at the top end of thehose body 12, a plurality ofsetting buttons 14 each for setting a driving state, operation mode, of theelectric blower 5 and the like to a predetermined state are provided on thehand operating part 13, and a grippingpart 15 to be gripped by a worker in cleaning is protruded on a base end side of thehand operating part 13. Further, a slender and approximatelycylindrical extension tube 16 capable of telescoping is attachably/detachably communication-connected with the top end of thehand operating part 13. Further, afloor brush 17 as a suction port body, which is put on, for example, a carpet to be cleaned on a floor surface and sucks dust on the carpet, is attachably/detachably communication-connected with the top end of theextension tube 16. - The
main body case 2 includes: alower case 21 with a partitioningwall 8 and an opened upper side; alid body 22 for opening and closing an upper portion of thedust collecting chamber 4 located at the front side of thelower case 21; and anupper case 23 for closing an upper portion of theelectric blower chamber 7 located at the rear side of thelower case 21. Additionally,many exhaust holes 24 are bored in themain body case 2. - Traveling
wheels 25 having a large diameter for traveling the vacuum cleanermain body 1 on the floor surface are rotatably and pivotally supported on both sides of theelectric blower chamber 7 located at the rear side of thelower case 21, and a turn wheel (not shown) as a driven wheel is turnably provided on a bottom, which faces the floor surface, of thedust collecting chamber 4 located at the front side of thelower case 21. - The
dust collecting pack 3 is, for example, a disposable paper pack, and includes a mouth frame (not shown) to be fixed to thedust collecting chamber 4 and apack body 28 in the form of pouch attached to the mouth frame. - The
dust collecting chamber 4 is formed commonly to theelectric blowers - The
electric blower 5 includes acentrifugal fan 31 and amotor 32 for rotating thecentrifugal fan 31, and thecentrifugal fan 31 and themotor 32 are housed in acylindrical body case 33. Additionally, theelectric blowers centrifugal fans 31 on the front side andmotors 32 on the rear side respectively, and juxtaposed in theelectric blower chamber 7 in its width direction. - The
motor 32 is driven by electric power fed from the outside. - The
cylindrical body case 33 includes an approximately cylindrical casemain body 33a having a closed rear side and an opened front side, and afan cover 33b engaged with the end of the opened front side of the casemain body 33a. Themotor 32 is housed in the casemain body 33a, and thecentrifugal fan 31 is housed in thefan cover 33b. Additionally, a plurality ofquadrangular exhaust ports 33c communicating with theelectric blower chamber 7 are opened in the casemain body 33a, and acirclular suction port 33d communicating with thedust collecting chamber 4 is opened at the center of the front end of thefan cover 33b. Further, in thecylindrical body case 33, the rear end of the casemain body 33a is elastically supported on the main body case 2 (lower case 21) by a rear portion supporting rubber (not shown) as an elastic supporting member, a circumferential edge of thefan cover 33b is elastically supported on the main body case 2 (lower case 21) by an annular frontportion supporting rubber 36 which is a sealing member as an elastic supporting member, and thesuction port 33d is airtightly connected to thedust collecting chamber 4 via the partitioningwall 8 so as not to communicate with theelectric blower chamber 7. - The controlling
means 6 is a circuit board including a switching element such as a triac, and the like, and can make theelectric blowers setting button 14. For example, in an operation mode, such as a weak mode, for applying relatively small suction power (operation mode for applying suction power half or less of full power), the controllingmeans 6 drives either of theelectric blowers means 6 drives both theelectric blowers - A power cord (not shown) having a plug portion at its top end is wound around the cord reel so as to be freely pulled out.
- On the other hand, the
electric blower chamber 7 is formed commonly to theelectric blowers main body case 2 via theexhaust holes 24. -
Round communication holes dust collecting chamber 4 and theelectric blower chamber 7 communicate with each other and each having a large diameter are opened in the partitioningwall 8 at positions facing the front sides of theelectric blowers Filters check valve units - Moreover, hereinafter, at least either of the communication holes 41A, 41B, or as a whole, will be sometimes simply referred to as a
communication hole 41, at least either of thefilters filter 42, and at least either of thecheck valve units check valve unit 43. - The upstream side, front portion, of the
communication hole 41 is covered with thefilter 42. - The
filter 42 collects dust which cannot be collected by thedust collecting pack 3. - As shown in
Figs. 4 and5 , in thecheck valve unit 43, a plurality of opening-closingvalve bodies 46 are rotatably attached to aframe 45. - The
frame 45 includes, integrally in an axis direction, front and rear direction, acylindrical frame 48 as a cylindrical first frame located at the upstream side and an angular tube-shapedframe 49 as an angular tube-shaped second frame located at the downstream side. - The
cylindrical frame 48 is airtightly connected to the downstream side of thecommunication hole 41. - The angular tube-shaped
frame 49 communicates with the downstream side of thecylindrical frame 48, faces thesuction port 33d of theelectric blower 5, is to be airtightly connected to thesuction ports 33d, and includesupper wall 49a andlower wall 49b for vertically partitioning the inside of themain body case 2, andside walls upper wall 49a andlower wall 49b and for horizontally partitioning the inside. - Round holes 51 each for pivotally supporting the opening-closing
valve body 46 rotatably are bored in theside walls holes 51 are vertically arranged approximately in a straight line. - Each opening-closing
valve body 46 is a flap portion formed of a relatively light member such as synthetic resin and in a laterally-long and quadrilateral plate shape, and the upper portions of both sides thereof are respectively inserted into thehole 51 so that thevalve body 46 is pivotally supported so as to be rotatable in the front and rear direction (vertical direction). Further, the opening-closingvalve bodies 46 are successively arranged vertically at an approximate interval, and the vertical size thereof is set so as to be larger than an interval between theholes lower end 46a of the upper opening-closingvalve body 46 can come into contact with a rear portion on the upper end side of the lower opening-closingvalve body 46. - The
lower end 46a side of each opening-closingvalve body 46, as indicated by imaginary lines inFigs. 4(a) and 4(b) , rotates backward and upward so as to be approximately horizontal by negative pressure of the corresponding drivingelectric blower 5, and opens the angular tube-shapedframe 49. When the correspondingelectric blower 5 is stopped, thelower end 46a side, as indicated by solid lines inFigs. 4(a) and 4(b) , rotates forward and downward by its own weight and thevalve body 46 closes. In this state, when the otherelectric blower 5 is driven, thelower end 46a side is sucked to an upper portion of the underlying opening-closingvalve body 46 by negative pressure of the other drivingelectric blower 5 via thecommunication hole 41 and thedust collecting chamber 4 so that the inside of theframe 45 is closed. At this time, thelower end 46a of the lowest opening-closingvalve body 46 is sucked to astep part 49d between thelower wall 49b and thecylindrical frame 48. In other words, each opening-closingvalve body 46 can be opened and closed by a pressure difference (wind power) between the upstream side and downstream side. - Next, operation of the first embodiment will be described.
- In the case of using a new
dust collecting pack 3, it is first attached to thedust collecting chamber 4 exposed by opening thelid body 22, thelid body 22 is closed, and then the power cord is pulled out and the plug portion at the top end of the cord is connected to an outlet. In the case of not using the newdust collecting pack 3, thelid body 22 is neither opened nor closed, the power cord is pulled out and the plug portion is connected to the outlet. - The
gripping part 15 of thehand operating part 13 of thehose body 12 connected to the mainbody suction port 11 is gripped, and apredetermined setting button 14 is operated. Thus, a control circuit in the vacuum cleanermain body 1 drives themotor 32 and rotates thecentrifugal fans 31 so that the negative pressure is generated. Thefloor brush 17 connected to the top end side of thehose body 12 via theextension tube 16 is moved backward and forward on the floor surface with thegripping part 15. - At this time, for example, in the case where a mode, such as a weak mode, for applying relatively small suction power is selected with the
setting button 14, the controlling means 6 drives either of theelectric blowers - For example, the controlling means 6 drives not the
electric blower 5 first driven in the preceding drive but the otherelectric blower 5. That is, in the case where theelectric blower 5A is first driven in the preceding drive, theelectric blower 5B is first driven in this drive, and in the case where theelectric blower 5B is first driven in the preceding drive, theelectric blower 5A is first driven in this drive. Moreover, in the case where both theelectric blowers electric blowers - As shown in
Fig. 1 , for example, in the case where theelectric blower 5A is driven, theelectric blower 5B is stationary, and negative pressure generated by the driving of theelectric blower 5A starts acting on theelectric blower 5B side from thedust collecting chamber 4 via the communication holes 41A, 41B. - At this time, in the
check valve unit 43B, since the pressure of the downstream side of each opening-closingvalve body 46 is larger than that of the upstream side thereof, each opening-closingvalve body 46 closed by rotation downward of thelower end 46a by its own weight is sucked to the upstream side, thelower end 46a of each opening-closingvalve body 46 is sucked to the upper end side of the underlying opening-closingvalve body 46, thelower end 46a of the lowest opening-closingvalve body 46 is sucked to thestep part 49d, the inside of theframe 45 is closed, as indicated by the solid lines inFigs. 4(a) and 4(b) , and air is prevented from flowing backward from theexhaust port 33c to thesuction port 33d of theelectric blower 5B. - Additionally, since the pressure of the upstream side of each opening-closing
valve body 46 is larger than that of the downstream side thereof in thecheck valve unit 43A, thelower end 46a of each opening-closingvalve body 46 rotates backward and upward around the upper end side thereof until each opening-closingvalve body 46 becomes approximately horizontal, the inside of theframe 45 is opened, and air is sucked into only theelectric blower 5A from the mainbody suction port 11 side via thedust collecting chamber 4, as indicated by the imaginary lines inFigs. 4(a) and 4(b) . - Similarly, as shown in
Fig. 2 , in the case where theelectric blower 5B is driven, theelectric blower 5A is stationary, and negative pressure generated by theelectric blower 5B acts on thehose body 12, theextension tube 16 and thefloor brush 17 via the mainbody suction port 11 side, and starts acting on theelectric blower 5A side from thedust collecting chamber 4 via the communication holes 41B, 41A. - At this time, in the
check valve unit 43A, since the pressure of the downstream side of each opening-closingvalve body 46 is larger than that of the upstream side thereof, each opening-closingvalve body 46 closed by rotation downward by its own weight of thelower end 46a is sucked to the upstream side, thelower end 46a of each opening-closingvalve body 46 is sucked to the upper end side of the underlying opening-closingvalve body 46, thelower end 46a of the lowest opening-closingvalve body 46 is sucked to thestep part 49d, the inside of theframe 45 is closed, as indicated by the solid lines inFigs. 4(a) and 4(b) , and air is prevented from flowing backward from theexhaust port 33c tosuction port 33d of theelectric blower 5A. - Additionally, since the pressure of the upstream side of each opening-closing
valve body 46 is larger than that of the downstream side thereof in thecheck valve unit 43B, thelower end 46a of each opening-closingvalve body 46 rotates backward and upward around the upper end side thereof until each opening-closingvalve body 46 becomes approximately horizontal, the inside of theframe 45 is opened, and air is sucked into only theelectric blower 5B from the mainbody suction port 11 side via thedust collecting chamber 4, as indicated by the imaginary lines inFigs. 4(a) and 4(b) . - Further, for example, in the case where an operation mode, such as a strong mode, for applying relatively large suction power is selected by the
setting button 14, the controlling means 6 drives both theelectric blowers Fig. 3 . - Consequently, since the pressure of the downstream side of each opening-closing
valve body 46 becomes larger than that of the upstream side thereof in thecheck valve units lower end 46a of each opening-closingvalve body 46 rotates backward and upward around the upper end side thereof until each opening-closingvalve body 46 becomes approximately horizontal, the inside of theframe 45 is opened, and air is sucked into theelectric blowers body suction port 11 side via thedust collecting chamber 4, as indicated by the imaginary lines inFigs. 4(a) and 4(b) . - Then, air sucked together with dust from the top end of the
floor brush 17 by the negative pressure of theelectric blower 5 becomes suction air and is sucked together with the dust into thedust collecting pack 3 via theextension tube 16, thehose body 12 and the mainbody suction port 11, and the contained dust is collected when the air containing the dust passes through thepack body 28 of thedust collecting pack 3. - The air, which has passed through the
pack body 28, passes through the filters, is then sucked into thesuction ports 33d of theelectric blower 5 via the communication holes, passes through the inside of thecylindrical body cases 33 of theelectric blower 5, is exhausted as exhaust air from theexhaust ports 33c while cooling themotors 32, and exhausted from theelectric blower chamber 7 to the outside of themain body case 2 via the exhaust holes 24. - As described above, according to the first embodiment, even in the case where any one of the plurality of
electric blowers 5, either of theelectric blowers check valve unit units electric blowers dust collecting chamber 4 side from the other stationaryelectric blower 5,electric blower electric blower 5 can be completely applied to thefloor brush 17 side from the mainbody suction port 11, and thus suction power can be secured. - Additionally, since the
check valve unit 43, which is an opening-closing means, is adopted as a backflow preventing means, the backflow preventing means can be easily realized. - Further, since the
check valve unit 43 is opened and closed by the pressure difference between the upstream side and downstream side, no power source, such as a motor, for opening and closing thecheck valve unit 43 is required to be provided separately, the structure of the electric vacuum cleaner can be simplified, costs are reduced, and power can be saved. - Specifically, since the
check valve unit 43 includes the flap-shaped opening-closingvalve body 46, which rotates downward by its own weight by stopping of theelectric blower 5 and closes, thecheck valve unit 43 can be easily realized. - The
check valve unit 43 can be easily built in the vacuum cleanermain body 1 since theframe 45 and each opening-closingvalve body 46 are integrally made as a unit. - Additionally, the
electric blowers electric blowers - Further, since the electric vacuum cleaner is equipped with, a plurality of, for example, two
electric blowers - Additionally, when the suction power of the electric vacuum cleaner is lowered, since the
electric blowers electric blowers electric blowers 5 is driven and the otherelectric blower 5 is stopped, the efficiency is further improved. - Moreover, even if the
check valve units 43 are respectively provided at theexhaust port 33c sides of theelectric blowers 5 or are respectively provided on thesuction port 33d side of one of theelectric blowers 5 and at theexhaust port 33c side of the otherelectric blower 5 in the first embodiment, an operation-effect similar to that of the first embodiment can be obtained. - Next, a second embodiment will be described with reference to
Figs. 7 to 9 . Moreover, the same reference symbol is attached to each part having the same constitution and operation as that of the first embodiment, and description thereof will be omitted. - In the second embodiment, the
electric blower chamber 7 is partitioned intoelectric blower chambers electric blowers check valve units electric blower chambers - That is, a
partitioning wall 55 is formed on thepartitioning wall 8 so as to continue approximately straight from the rear portion of thepartitioning wall 8 to the rear portion of themain body case 2, and theelectric blower chamber 7 is partitioned into theelectric blower chambers partitioning wall 55. - Accordingly, the
electric blower chambers electric blowers exhaust ports 33c respectively. - Similar to the first embodiment, in the case where the operation mode, such as a weak mode, for applying relatively small suction power is selected with setting
button 14, the controlling means 6 drives theelectric blower 5A as shown inFig. 7 , or drives theelectric blower 5B as shown inFig. 8 , and thus the pressure of the downstream side becomes larger than that of the upstream side in thecheck valve unit valve body 46 rotates downward to close, and air is prevented from flowing backward from theelectric blower electric blower body suction port 11 side via thedust collecting chamber 4. Additionally, in the case where the operation mode, such as a strong mode, for applying relatively large suction power is selected with thesetting button 14, the controlling means 6 drives both theelectric blowers Fig. 9 , and thus the pressure of the upstream side becomes larger than that of the downstream side in thecheck valve units valve body 46 opens, and air is sucked into theelectric blowers body suction port 11 side via thedust collecting chamber 4. - Consequently, even in the case where any one of the plurality of
electric blowers 5, either of theelectric blowers check valve units units electric blowers dust collecting chamber 4 side from the other stationaryelectric blower 5,electric blower electric blower 5 can be completely applied to thefloor brush 17 side from the mainbody suction port 11, and the operation-effect similar to that of the first embodiment can be obtained. - Additionally, since the
electric blower chamber 7 is partitioned into theelectric blower chambers electric blowers electric blowers electric blower chamber 7 can be easily secured and air leakage in the driving of theelectric blower 5 can be more reliably prevented. - Moreover, even if the
check valve units electric blowers electric blower chambers check valve units 43 are provided at the suction side of one of theelectric blowers 5 and the exhaust side of the otherelectric blower 5 in the second embodiment, an operation-effect similar to that of the third embodiment can be obtained. - Additionally, although the two
electric blowers 5 are used in each embodiment, for example, three electric blowers can be similarly used. - Next, a third embodiment will be described with reference to
Figs. 10 and11 . Moreover, the same reference symbol is attached to each part having the same constitution and operation as that of each of the above embodiments, and description thereof will be omitted. - In the third embodiment, the controlling means 6 can perform control for driving either of the
electric blowers 5 and stopping the otherelectric blower 5, and control for driving all theelectric blowers 5 in the first embodiment. In other words, the controlling means 6 drive-controls theelectric blowers 5 so that either of theelectric blowers 5 is driven prior to the otherelectric blower 5. Thecheck valve unit 43 is arranged in accordance with the otherelectric blower 5. - In the third embodiment, the controlling means 6, for example in the case where the
electric blower 5A is constantly driven and shifting to the operation mode for applying relatively large suction power is made in cleaning, can properly drive theelectric blower 5B additionally as necessary, and acheck valve unit 43C, which is an opening-closing means as a backflow preventing means, is arranged in accordance with only theelectric blower 5B. In other words, driving order is set to theelectric blower 5. - Additionally, the
check valve unit 43C is similar in constitution to thecheck valve unit 43 of the first embodiment. - For example, in the case where the operation mode, such as a weak mode, for applying relatively small suction power is selected with setting
button 14, the controlling means 6, as shown inFig. 10 , drives theelectric blower 5A, and thus the pressure of the downstream side becomes larger than that of the upstream side in thecheck valve unit 43C, each opening-closingvalve body 46 rotates downward to close, and air is prevented from flowing backward from theelectric blower 5B and sucked into only theelectric blower 5A from the mainbody suction port 11 side via thedust collecting chamber 4. Additionally, for example, in the operation mode, such as a strong mode, for applying relatively large suction power is selected with thesetting button 14, the controlling means 6 drives both theelectric blowers Fig. 11 , and thus the pressure of the upstream side becomes larger than that of the downstream side in thecheck valve units 43C, each opening-closingvalve body 46 opens, and air is sucked into theelectric blowers body suction port 11 side via thedust collecting chamber 4. - Consequently, even in the case where only one of the plurality of the electric blowers 5 (
electric blower 5A) is driven, thecheck valve unit 43C provided in accordance with the other electric blower 5 (electric blower 5B) prevents air from being sucked into thedust collecting chamber 4 side from the other stopping electric blower 5 (electric blower 5B), the negative pressure of theelectric blower 5 is completely applied to thefloor brush 17 side from the mainbody suction port 11, the suction power can be secured, for example, and the operation-effect similar to that of the first embodiment can be obtained. - Additionally, since the
electric blower 5A is constantly driven in cleaning, control of the driving of theelectric blower 5 by the controlling means 6 can be simplified and thecheck valve unit 43 may be provided on either of theelectric blowers 5, compared with the case where drive switching is made between theelectric blowers - Moreover, even if the
check valve unit 43C is provided at eachexhaust port 33c side of theelectric blower 5B in the third embodiment, an operation-effect similar to that of the third embodiment can be obtained in constitution. - Next, a fourth embodiment will be described with reference to
Figs. 12 and13 . Moreover, the same reference symbol is attached to each part having the same constitution and operation as that of each of the above embodiments, and description thereof will be omitted. - In the fourth embodiment, the controlling means 6 can perform control for driving either of the
electric blowers 5 and stopping the otherelectric blower 5, and thecheck valve unit 43 is arranged in accordance with the downstream side of the otherelectric blower 5, in the second and third embodiments. - In the fourth embodiment, similar to the third embodiment, the controlling means 6 drives the
electric blower 5A prior to theelectric blower 5B, and thecheck valve unit 43C is arranged on the downstream side of theelectric blower 5B of theelectric blower chamber 7B corresponding to theelectric blower 5B. - That is, the controlling means 6, for example, in the case of constantly driving the
electric blower 5A and shifting to the operation mode for applying relatively large suction power in cleaning, can properly drive theelectric blower 5B additionally as necessary. - In the case where the operation mode, such as a weak mode, for applying relatively small suction power is selected with setting
button 14, the controlling means 6 drives theelectric blower 5A as shown inFig. 12 , and thus the pressure of the downstream side becomes larger than that of the upstream side in thecheck valve unit 43C, each opening-closingvalve body 46 rotates downward to close, and air is prevented from flowing backward from theelectric blower 5B and sucked into only theelectric blower 5A from the mainbody suction port 11 side via thedust collecting chamber 4. Additionally, in the case where the operation mode, such as a strong mode, for applying relatively large suction power is selected with thesetting button 14, the controlling means 6 drives both theelectric blowers Fig. 13 , and thus the pressure of the upstream side becomes larger than that of the downstream side in thecheck valve unit 43C, each opening-closingvalve body 46 opens, and air is sucked into theelectric blowers body suction port 11 side via thedust collecting chamber 4. - Moreover, even if the
check valve unit 43C is provided on the suction side of theelectric blower 5B in theelectric blower chamber 7B in the fourth embodiment, an operation-effect similar to that of the fourth embodiment can be obtained. - Additionally, although only the two
electric blowers 5 are used in the third and fourth embodiments, three or moreelectric blowers 5 can be similarly used. For example, control can be performed that one of theelectric blowers 5 is constantly driven and the other plurality ofelectric blowers 5 are stopped, or that the plurality ofelectric blowers 5 are constantly driven and the otherelectric blowers 5 are stopped. In this case, backflow preventing means can be provided in accordance with the other plurality ofelectric blowers 5 respectively. Additionally, in the case where the some of the plurality of otherelectric blowers 5 are simultaneously driven, one backflow preventing means can be provided for a group of theelectric blowers 5. - Further, in each of the above embodiments, if anything is capable of preventing air from flowing backward to the
dust collecting chamber 4 side of the non-drivingelectric blower 5, it is applicable to the backflow preventing means in addition to thecheck valve unit 43. - Next, a fifth embodiment will be described with reference to
Figs. 14 to 16 . Moreover, the same reference symbol is attached to each part having the same constitution and operation as that of each of the above embodiments, and description thereof will be omitted. - In the fifth embodiment, in place of the
check valve unit 43 of the first embodiment, the controlling means 6 drives, in driving any of theelectric blowers 5, the otherelectric blower 5 so that air is prevented from flowing backward. - That is, in the case where the operation mode, such as a weak mode, for applying relatively small suction power is selected with the
setting button 14, the controlling means 6, as shown inFigs. 14 or15 , drives theelectric blower 5B (electric blower 5A) at a low speed so that air is prevented from flowing backward to thedust collecting chamber 4 side via theelectric blower 5B (electric blower 5A). - Specifically, the controlling means 6 detects the pressure in the
electric blower chamber 7 by a blower chamber inner pressure detecting means (not shown) provided in theelectric blower chamber 7, detects the pressure in thedust collecting chamber 4 by a dust collecting chamber inner pressure detecting means (not shown) provided in thedust collecting chamber 4, and drives, in driving either of the electric blowers 5 (electric blower electric blower dust collecting chamber 4 andelectric blower chamber 7 is controlled. Thus, air is sucked into theelectric blower body suction port 11. - Additionally, in the case where the operation mode, such as a strong mode, for applying relatively large suction power is selected with the
setting button 14, the controlling means 6, as shown inFig. 16 , drives both theelectric blowers electric blowers body suction port 11. - Consequently, even in the case where one of the plurality of
electric blowers 5 is driven, the controlling means 6 drives the otherelectric blower 5 so that air is prevented from flowing backward, and thus the air is prevented from being sucked into thedust collecting chamber 4 side and the negative pressure of theelectric blower 5 is completely applied to thefloor brush 17 side from the mainbody suction port 11. Therefore, an operation-effect, such as securing of the suction power, similar to that of each of the above embodiments can be obtained. - Additionally, since air is prevented from flowing backward from the non-driving
electric blower 5 as long as the driving of theelectric blower 5 is controlled by the controlling means 6, no check valve is required to be provided and the electric vacuum cleaner can be simplified. - Moreover, in the fifth embodiment, even if the controlling means 6 is adapted to be capable of driving any of the
electric blower 5 constantly and stopping the otherelectric blower 5 in cleaning in the fifth embodiment similar to the third embodiment or fourth embodiment, not only can the same operation-effect be obtained but also a controlling method of the controlling means 6 can be simplified in constitution. - Additionally, although two
electric blowers 5 are used in the fifth embodiment, three or moreelectric blowers 5 can be similarly provided. - Further, even if the
electric blower chamber 7 is partitioned into theelectric blower chambers - In each of the above embodiments, a sealing member which, when the opening-closing
valve bodies 46 are closed, comes into airtight contact with the upstream sides of the closed opening-closingvalve bodies 46 may be provided in the angular tube-shapedframe 49. - The present invention is used for, for example, household electric vacuum cleaners.
Claims (2)
- An electric vacuum cleaner comprising:a vacuum cleaner main body (1);an electric blower chamber (7) formed in the vacuum cleaner main body (1);a plurality of electric blowers (5A, 5B) housed in the electric blower chamber (7);a common dust collecting chamber (4) which is provided in the vacuum cleaner main body (1) and communicates with a suction side of each of the electric blowers (5A, 5B);a controlling means (6) capable of making the electric blowers (5A, 5B) independently drive; characterized in that:the electric blower chamber (7) is partitioned into a plurality of electric blower chambers (7A, 7B) in which the electric blowers (5A, 5B) are separately housed;opening-closing means (43A, 43B) are provided in accordance with at least either the upstream side or downstream side of each electric blower (5A, 5B) and at the downstream side with respect to the dust collecting chamber (4) and prevent air from flowing backward to the dust collecting chamber (4) side by opening and closing at least either the upstream side or downstream side of the corresponding electric blower (5A, 5B) by a pressure difference between the upstream side and downstream side.
- The electric vacuum cleaner according to claim 1, wherein
the opening-closing means (43A, 43B) includes opening-closing valve bodies (46) each of which has an upper end rotatably supported and rotates downward by its own weight by stopping of the electric blower and closes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007305097A JP5112022B2 (en) | 2007-11-26 | 2007-11-26 | Electric vacuum cleaner |
PCT/JP2008/003438 WO2009069274A1 (en) | 2007-11-26 | 2008-11-21 | Electric vacuum cleaner |
Publications (3)
Publication Number | Publication Date |
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EP2211678A1 EP2211678A1 (en) | 2010-08-04 |
EP2211678A4 EP2211678A4 (en) | 2012-08-22 |
EP2211678B1 true EP2211678B1 (en) | 2015-11-04 |
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Application Number | Title | Priority Date | Filing Date |
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EP08855539.6A Not-in-force EP2211678B1 (en) | 2007-11-26 | 2008-11-21 | Electric vacuum cleaner |
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EP (1) | EP2211678B1 (en) |
JP (1) | JP5112022B2 (en) |
KR (2) | KR101165898B1 (en) |
CN (1) | CN101820806B (en) |
EG (1) | EG25887A (en) |
RU (1) | RU2424758C1 (en) |
WO (1) | WO2009069274A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2011030776A (en) * | 2009-07-31 | 2011-02-17 | Toshiba Corp | Electric cleaner and method for adjusting the same |
US10578964B2 (en) | 2013-12-31 | 2020-03-03 | Canon Nanotechnologies, Inc. | Asymmetric template shape modulation for partial field imprinting |
CN109846424A (en) * | 2019-03-29 | 2019-06-07 | 天佑电器(苏州)有限公司 | Power Component and burnisher with the Power Component |
CN210990037U (en) * | 2019-07-22 | 2020-07-14 | 安克创新科技股份有限公司 | Dust box, dust box assembly and cleaning device |
GB2608158B (en) * | 2021-06-24 | 2023-09-20 | Dyson Technology Ltd | Vacuum cleaner |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL178074B (en) * | 1953-05-04 | Otsuka Pharma Co Ltd | MEDICINAL PREPARATIONS WITH AN INHIBITING ACTION ON PLATE AGGREGATION AND PHOSPHODY STERASE AND CARBOSTYRIL DERIVATIVES TO BE USED IN THESE PREPARATIONS. | |
US5005251A (en) * | 1989-10-20 | 1991-04-09 | Hako Minuteman, Inc. | Adapter for mounting vacuum motor |
JP2003199693A (en) * | 2001-10-23 | 2003-07-15 | Hitachi Ltd | Vacuum cleaner |
DE202004012911U1 (en) * | 2004-08-18 | 2004-10-21 | Electrostar Schöttle GmbH & Co. KG | Suction device with several suction motors |
JP2007020765A (en) * | 2005-07-14 | 2007-02-01 | Matsushita Electric Ind Co Ltd | Vacuum cleaner |
JP4709680B2 (en) * | 2006-03-31 | 2011-06-22 | 株式会社東芝 | Electric vacuum cleaner |
-
2007
- 2007-11-26 JP JP2007305097A patent/JP5112022B2/en active Active
-
2008
- 2008-11-21 EP EP08855539.6A patent/EP2211678B1/en not_active Not-in-force
- 2008-11-21 CN CN2008801115556A patent/CN101820806B/en not_active Expired - Fee Related
- 2008-11-21 KR KR1020107009081A patent/KR101165898B1/en active IP Right Grant
- 2008-11-21 RU RU2010110351/12A patent/RU2424758C1/en not_active IP Right Cessation
- 2008-11-21 KR KR1020117027956A patent/KR101216909B1/en not_active IP Right Cessation
- 2008-11-21 WO PCT/JP2008/003438 patent/WO2009069274A1/en active Application Filing
-
2010
- 2010-05-19 EG EG2010050821A patent/EG25887A/en active
Also Published As
Publication number | Publication date |
---|---|
KR20100063810A (en) | 2010-06-11 |
RU2424758C1 (en) | 2011-07-27 |
EP2211678A1 (en) | 2010-08-04 |
CN101820806B (en) | 2013-07-03 |
EG25887A (en) | 2012-09-26 |
KR20120003955A (en) | 2012-01-11 |
JP2009125399A (en) | 2009-06-11 |
KR101216909B1 (en) | 2012-12-28 |
EP2211678A4 (en) | 2012-08-22 |
JP5112022B2 (en) | 2013-01-09 |
CN101820806A (en) | 2010-09-01 |
WO2009069274A1 (en) | 2009-06-04 |
KR101165898B1 (en) | 2012-07-13 |
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