JP2010011905A - Electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner in which a clean filter can be continuously used by merely reversely attaching a dust collecting container when its suction power is temporarily deteriorated. <P>SOLUTION: The electric vacuum cleaner collects dust by sucking a polluted air from a polluted air sucking connecting port 18 provided at the front section of a vacuum cleaner body by activating an electric air blower 31, leading the polluted air to a dust collecting container 12, and making it pass through a filter 10b installed at the back of the dust collecting container 12. The electric vacuum cleaner is provided with the dust collecting container 12 with filters 10a, 10b incorporated at two openings on the front and back of the dust collecting container 12. An external air inlet 22 is provided to the electric vacuum cleaner body to clean the filter 10a to be cleaned by spraying the sucked external air through an external air inlet electromagnetic valve 21 and backwashing the filter 10a. This process is conducted several times in the course of cleaning operation to prepare for the next reverse application. The clean filters 10a, 10b can be continuously used by merely reversely attaching the dust collecting container 12 when the sucking power is temporarily deteriorated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner, and more particularly to a dust collection container.

  2. Description of the Related Art Conventionally, an electric vacuum cleaner in which a dust collecting container is detachably provided on a vacuum cleaner body is known.

This type of electric vacuum cleaner has an electric blower in the main body of the vacuum cleaner. A storage space for the dust collection container is provided on the suction side of the electric blower installed at the rear of the main body, a filter is provided at the rear opening of the stored dust collection container, and a suction port is provided at the front of the dust collection container. Is formed and communicated with the dirty air suction connection port of the main body, and the hose body, the extension pipe, and the floor brush are sequentially communicated with each other.
Then, the dust sucked from the dirty air suction connection port of the main body is collected and collected in the dust collecting container by driving the electric blower. For example, a substantially bottomed cylindrical dust collecting cup which is a cyclone separation type dust collecting device is detachably provided.
This dust collection cup has a filter attached inside, and when the suction air obtained by cyclone separating coarse dust, which is relatively large dust, passes through the filter, fine dust, which is fine dust contained in the suction air, It is collected by this filter.
JP 2003-265376 A JP 2008-99811 A

  However, the above-described electric vacuum cleaner has a problem that the filter is clogged with time, and the suction force of the electric blower is reduced when the filter is clogged in this way.

  For this reason, it is necessary to periodically clean the filter and frequently remove fine dust adhering to the filter, and maintenance is not good. In addition, various dust removal mechanisms for removing dust collected by the filter from the filter have been proposed, but there is a problem that the structure of the dust collecting container and the structure of the filter are complicated and reassembly is difficult. It was.

  The present invention has been made in view of the above points, and in order to reduce the suction force over time, an electric cleaning device that can use a continuously cleaned filter by simply mounting the dust collecting container in an inverted manner. The purpose is to provide a machine.

  The present invention, when the electric blower is activated, sucks the polluted air through the polluted air suction solenoid valve connected from the polluted air suction connecting port provided on the front surface of the vacuum cleaner body, leads it to the dust collecting container, and the rear of the dust collecting container. A vacuum cleaner that collects dust by passing through a filter, and includes a dust collecting container in which filters are incorporated in two openings at the front and rear of the dust collecting container.

During the cleaning operation, the rear filter is used for the work, and the front filter, which is another filter, is cleaned in the following steps during the cleaning operation process.
An outside air inlet is provided on the front of the vacuum cleaner body facing the outside air, and the outside air introduction solenoid valve is used to blow the outside air suction air on the filter that is waiting to be cleaned. Prepare for. In addition, when the dust collection container is installed in reverse in the installation space, the rear suction port is blocked by the hole closing lid provided in the main body case, and the dust collection container can be used interchangeably even if it is inverted. Cleaning work can be continued without disassembling, cleaning, or replacing.

In addition, the prefilter plate suspended so as to cover the windward side of the rear filter functions as a coarser filter than the rear filter, collects relatively large dust, and reduces clogging of the rear filter. .
On the other hand, the lower part of the front prefilter plate is pushed and moved by the outside air suction air to create a gap, through which fine dust peeled off by the front filter passes and the prefilter plate itself is also washed. In such a case, fine dust enters into the groove in the dust discharge door, thereby preventing adhesion to the rear filter.

  In the following, interchangeability means that the front and rear parts of the dust collection container exhibit the same functions with substantially the same configuration when the front and rear are reversed.

Also, as the operation of the electric blower, solenoid valve, etc. of this vacuum cleaner, usually when the power switch of the vacuum cleaner is turned off, the electric blower stops immediately, and then the electric vibrating grid plate operates for a predetermined time .
On the other hand, when the power switch is turned off after a predetermined accumulated operating time has elapsed after the dust container is installed by the sensor for confirming the installation of the dust container, the electric blower continues to operate for a predetermined time, and the outside air introduction solenoid valve The control unit is configured to perform a backwash cleaning process in which the outside air suction air peels off dust adhering to the filter waiting to be cleaned, and then stops the electric blower and the electric vibrating grid plate.
After turning on the power switch to the vacuum cleaner, the backwash cleaning is performed after the specified operating time has elapsed, so dust has already accumulated. Prevent sticking to. The accumulated operation time is reset when the dust collecting container is removed from the cleaner body case.

On the other hand, when both the front filter and the rear filter are used as bag filters, backwashing is performed by opening and closing the outside air introduction solenoid valve one or more times, blowing outside air suction air, and peeling off dust adhering to the front bag filter. While performing the cleaning process, this bag part spreads inside the dust collecting container, the elastic body stuck when the outside air suction air is stopped shrinks, the bag filter shrinks, combined with the movement due to this repetition Effective backwashing can be performed.

  In the following, backwashing refers to removing dust adhering to the filter by allowing fluid to pass through the filter from the direction opposite to the direction in which the fluid passes when dust is collected by the filter. To do.

According to the present invention, the operation of the electric blower, the electromagnetic valve, etc. of the vacuum cleaner is dedicated to the cleaning operation within a certain accumulated operation time after the dust container is mounted by the dust container mounting confirmation sensor. After the dust is accumulated to some extent, backwash cleaning is performed to remove filter dust, particularly fine dust, waiting to be cleaned.
Since there is an operation process dedicated to this cleaning operation, it is possible to absorb and capture fine dust that has been collected in dust collection containers and dust, especially cotton-like dust. Do not adhere to the filter inside.

  Also, when the suction force decreases due to dust attached to the filter behind the dust collection container, after the dust is discharged from the dust discharge door, disassemble the filter in the dust collection container or scrape the dust with your hands. In addition, since the entire dust collecting container is simply inverted and mounted with both the front and rear filters being incorporated, the cleaned filter can be used quickly and continuously, and the efficiency of the cleaning work is increased.

  In addition, when a space is provided in the dust collection container that secures dust when a groove is provided in the dust discharge door, the dust collection container may be installed in reverse without intentionally discharging the dust. In such a case, there is a large rearward movement of the dust inside the dust collection container due to the outside air suction air, so that fine dust enters and is captured in the groove provided in the dust discharge door, and that part is currently being cleaned Do not adhere to the filter.

  Hereinafter, the configuration of the vacuum cleaner according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  In FIG. 1, a dust collector 12 is attached to a main body case 37 to form a main body of a vacuum cleaner, and this main body of the vacuum cleaner is a so-called canister type vacuum cleaner that can run on a floor surface. The electric blower 31 is mounted behind the main body case 37 with the suction side as the front side and the exhaust side as the rear side. Further, there is a space for installing the dust collection container 12 in front of the suction port. 12 is disposed so as to be sandwiched by the hose connection lid 23 on the front surface, and the main body case 37 is provided with a control means 30 for controlling the operation of the electric blower 31 and the like.

Further, the hose connection lid 23 is connected to the lower end of the front portion of the main body case 37 via the lid hinge 38, and is closely attached to the dust collecting container 12 by packing by a stopper 39 at the upper end of the hose connection lid 23. The rear upper end of the dust container 12 is also fixed to the main body case 37 with a stopper 39.
When the dust collecting container 12 is mounted in the mounting space, the suction port 14 b is closed by the hole closing lid 24 provided in the main body case 37.

  And the outside air introduction port 22 and the outside air introduction electromagnetic valve 21 provided in the hose connection lid 23 on the front surface of the vacuum cleaner main body, the filter 10a waiting for cleaning incorporated in the front opening of the dust collecting container 12, The dust container 12 itself, the filter 10b, and the electric blower 31 are configured to communicate with each other.

  On the other hand, the polluted air suction connection port 18 provided on the hose connection lid 23, the polluted air suction solenoid valve 16, the suction port 14a of the dust collection container 12, the dust collection container 12, and the filter 10b continue to the electric blower 31. The hose body 32 is detachably provided at the polluted air suction connection port 18, and a hand operating section 33 is provided at the tip of the hose body 32. A plurality of operation buttons 34 are provided for the operator to operate the electric blower 31 and the like. An extension pipe 35 and a floor brush 36 as a suction port body are sequentially connected to the distal end portion of the hand operation unit 33.

Next, the pre-filter plate 19a, which is adjacent to the filter 10a and has the upper periphery around the filter 10a as a fulcrum and moves downward at the rear side by the outside air suction air, is suspended so as to cover the leeward side of the filter 10a and backwashed. Flows to the rear filter 10b side through the gap at the bottom of the inclined prefilter plate 19a, and the prefilter plate 19a itself is also cleaned.
On the other hand, a pre-filter plate 19b adjacent to the rear filter 10b and whose lower part moves back and forth with the upper periphery of the filter 10b as a fulcrum is suspended so as to cover the windward side of the filter 10b.

  The filters 10a and 10b may be pleated filters, and the pre-filter plate 19b functions as a coarser filter than the filter 10b, collects relatively large dust, and reduces clogging of the filter 10b.

  In addition, when the dust discharge door 17 is provided with the door groove 13 and the dust collection container 12 is mounted in an inverted manner, the dust discharge door 17 moves to the rear due to the outside air suction air, so that the dust is moved backward. Fine dust enters and is trapped in the provided door groove 13 and is not reattached to the filter 10b during the current cleaning operation. When discharging the fine dust trapped in the groove 13, if the dust discharge door 17 is opened, the groove 13 becomes substantially vertical, and the opening / closing hinge of the dust discharge door 17 is directed in such a direction that fine dust can easily flow out along the groove 13. 11 is disposed.

  The operation of the outside air introduction solenoid valve 21, the polluted air suction solenoid valve 16, the electric vibration lattice plate 44 and the electric blower 31 is controlled by the control means 30.

The main operation modes set in the control means 30 are as follows.
During normal cleaning work, when the operation button 34 is turned on, the electric blower 31 is activated, the outside air introduction solenoid valve 21 is closed, and the polluted air suction solenoid valve 16 is opened, and cleaning work is performed there.
When the power is turned off, the electric blower 31 stops and stops after the electric vibrating lattice plate 44 is actuated for a predetermined time to clean the filter 10a. However, after a predetermined accumulated operation time, the operation is automatically stopped after entering the backwash cleaning process.

  In the backwash cleaning process, the electric blower 31 is activated, the polluted air suction solenoid valve 16 is closed, the outside air introduction solenoid valve 21 is actuated, and the filter 10a is cleaned and stopped after a predetermined time.

In order to enter the backwash cleaning process, the process is automatically entered when the power is turned off with the operation button during operation after a certain accumulated operation time. In the backwash cleaning process, the outside air introduction electromagnetic valve 21 is fully opened instantaneously while the electric blower 31 is operated, so that the impact is strongly transmitted to the filter to which the dust adheres and the backwash cleaning is effectively performed.
In addition, there is a forced backwash cleaning process mode. The accumulated operation time is stored in a memory in the control means 30 in conjunction with the mounting confirmation sensor 28.

Description of parts common to the first embodiment will be omitted, and the configuration of the vacuum cleaner according to the second embodiment of the present invention will be described with reference to FIGS. 4 to 5.
The filter 10a and the filter 10b as a cloth bag-shaped filter,
Two filters having a bag-like filter mouth portion joined to the periphery of the lattice frame 26, that is, a bag filter 25a and a bag filter 25b, are connected by an elastic body 15 between these bag portions and the lattice frame 26. One or more bodies are attached, and the bag portion is contracted.

When the bag filter 25a and the bag filter 25b are installed in the front and rear openings of the dust collecting container 12, the bag filter 25a to which dust adheres is blown with the outside air suction air from the outside air introduction electromagnetic valve 21 and backwashed. The bag portion of the bag filter 25a spreads instantaneously inside the dust collecting container 12, and effectively removes and cleans the dust by vibration and impact.
When the outside air suction air stops, the elastic body 15 attached to the bag portion of the bag filter 25a shrinks and shrinks the bag portion to prepare for the next outside air suction air. This backwash cleaning is repeated a plurality of times by the control means 30.

  Further, if necessary, the forced backwash operation button 29 is pressed so that the forced backwash cleaning process can be performed by the control means 30.

  On the other hand, the bag filter 25b is contracted by the elastic body 15, is formed with a pleat and has a sufficient surface area, and therefore exhibits performance as a filter. Further, since each lattice frame 26 has a lattice shape, it functions as a tool for preventing the bag filter from protruding from the dust collecting container 12 to the outside due to the suction air, and also serves as a support for the elastic body 15. The elastic body 15 may be directly attached to the bag portion so that the bag portions of both filters are contracted, and the member may be rubber, a coil spring, or a leaf spring.

  As suction air for backwashing, outside air suction air is taken in from the outside air introduction port 22 facing the outside air of the hose connection lid 23, but an exhaust pipe passage 40 is provided in the main body case 37, thereby the exhaust port of the electric blower 31. Peripheral exhaust air may be taken in, a circulation air passage may be formed to suppress exhaust air exhaust, and odor prevention and avoidance of dust in the outside air may be performed.

  The filter member may be made of non-woven fabric, paper or sponge, or a combination thereof. A dust discharge door 17 is disposed at the bottom of the dust collecting container 12 and is locked by a lock 42.

  Moreover, the handle 41 may be provided in the dust collection container 12, and the observation window using a transparent member may be provided in the upper surface of the dust collection container 12, a left-right side surface, etc. so that the accumulation degree of dust may be confirmed.

  A cord reel around which a power cord (not shown) for supplying power to the electric blower 31 is wound is disposed in the main body case 37, and the power cord can be taken in and out of the main body case 37.

  The installation location of the polluted air suction connection port 18 and the polluted air suction solenoid valve 16 may be provided directly around the center of the upper surface of the dust collecting container 12. In that case, it is not necessary to provide the suction port 14a, the suction port 14b, and the hole closing lid 24 of the dust collecting container 12.

  The opening / closing operation of each electromagnetic valve 16, 21 is controlled by the control means 30, but a separate valve control means for controlling is provided, or other valves are opened / closed by mechanically interlocking the opening / closing of the valves. Also good.

The details of the vacuum cleaner are not limited to the above configuration, and the vacuum cleaner is not limited to the canister type, and may be, for example, a self-propelled or autonomously-running vacuum cleaner. Even if the floor brush is an upright type or a handy type directly formed on the lower surface of the vacuum cleaner body, it can be used correspondingly.

It is a description side view of the vacuum cleaner of 1st embodiment of this invention. It is a description side view of the state which removed the dust collecting container of the vacuum cleaner same as the above. It is a description side view of the dust collecting container of a vacuum cleaner same as the above. It is a description side view of the vacuum cleaner of 2nd embodiment of this invention. It is a description side view of the dust collecting container of a vacuum cleaner same as the above.

Explanation of symbols

10a Filter 10b Filter 11 Opening / Closing Hinge 12 Dust Collection Container 13 Door Groove 14a Suction Port 14b Suction Port 15 Elastic Body 16 Dirty Air Suction Solenoid Valve 17 Dust Discharge Door 18 Dirty Air Suction Connection Port 19a Prefilter 19b Prefilter 21 Outside Air Solenoid Valve DESCRIPTION OF SYMBOLS 22 Outside air introduction port 23 Hose connection lid 24b Hole closing lid 25a Bag filter 25b Bag filter 26 Lattice frame 27 Power switch 28 Installation confirmation sensor 29 Forced backwash operation button 30 Control means 31 Electric blower 37 Main body case 38 Cover hinge
44 Electric diaphragm

Claims (5)

A filter 10a waiting for cleaning and a filter 10b that is currently being cleaned are installed in front and rear openings, respectively, and a dust collecting container 12 that is mounted and used in reverse compatible with the front and rear and a dirty air suction connection port provided on the hose connection lid 23. An electric blower 31 of a vacuum cleaner that sucks polluted air from 18 and guides it to the dust collecting container 12 and passes through the filter 10b, and
An outside air inlet 22 provided in the hose connection lid 23;
An outside air introduction solenoid valve 21 for backwashing and cleaning the filter 10a with the introduced outside air suction air;
A polluted air suction connection port 18 and a polluted air suction solenoid valve 16 communicated therewith,
A suction port 14a communicating with the suction port 14b, a suction port 14b facing the suction port 14b, and a hole closing lid 24b;
A dust discharge door 17 provided at the bottom of the dust collecting container 12 so as to be freely opened and closed;
An attachment confirmation sensor 28 for confirming the attachment state of the dust collecting container 12,
A vacuum cleaner comprising: an outside air introduction electromagnetic valve 21, a polluted air suction electromagnetic valve 16, and a control means 30 for controlling operations of the electric blower 31 at a predetermined timing.   The filter 10a is a bag filter 25a, the filter 10b is a bag filter 25b, and the mouth portion of the cloth bag-like filter is uniformly joined around the lattice frame 26. A dust collecting container 12 is provided, in which two filters, each of which is formed by contracting each of the bag portions, are connected to each other by one or a plurality of elastic bodies 15. The electric vacuum cleaner according to 1. A pre-filter plate 19a which is adjacent to the side of the filter 10a and suspended so as to cover the leeward side of the filter 10a with a pre-filter plate 19a whose lower part moves rearward by an outside air suction air with the upper periphery of the filter 10a as a fulcrum ,
A pre-filter plate 19b, which is adjacent to the side of the filter 10b and suspended so as to cover and overlap the windward side of the filter 10b with a pre-filter plate 19b whose lower part moves back and forth with the upper periphery of the filter 10b as a fulcrum, is assembled in the front-rear direction. The electric vacuum cleaner according to claim 1 or 2, further comprising a dust container (12).   The electric vacuum cleaner according to claim 1 or 3, further comprising a grid-like electric vibrating lattice plate (44) that vibrates the filter (10a) and separates dust at a location located on the windward side of the filter (10a). Several door grooves 13 are provided in a direction crossing the outside air suction air on the inner upper surface portion of the dust discharge door 17 provided at the bottom of the dust collecting container 12 via the opening / closing hinge 11, and fine dust separated from the filter is removed. 5. The electric vacuum cleaner according to claim 1, further comprising a dust collecting container 12 having a grooved dust discharge door 17 for preventing re-scattering to be captured in the door groove 13.