RU2396066C2 - Vacuum cleaner (versions) - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: inventions relate to vacuum cleaners, in which repeated adhesion of dust to dust arrester, for instance filter, is prevented. Vacuum cleaner comprises electric fan to suck in dust and air through suction hole, the first dust-separating unit to separate arriving dust and air, the second dust-separating unit to separate dust and air coming from the first dust-separating unit, unit of dust discharge to remove dust stuck to the second dust-separating unit, and return air channel to return dust discharged by unit of dust discharge to inlet of the first dust-separating unit under action of outer air coming through inlet air channel. Vacuum cleaner has the first locking element to close air channel arranged between outlet of the second dust-separating unit and inlet of electric fan, the second locking element to close air channel arranged between the first and second dust-separating units, bypass air channel, which connects inlet section of electric fan and outlet section of the first dust-separating unit, the third locking element to close bypass air channel and inlet channel to supply outer air to inlet of the second dust-separating unit. Control unit is provided to control the first, second and third locking elements. Version of vacuum cleaner comprises unit of dust discharge to supply external air to inlet side of the second dust-separating unit and to remove dust stuck to the second dust-separating unit under action of external air, and bypass air channel, which guides external air to outlet side of the second dust-separating unit. The third locking element is intended to catch dust transferred by external air along bypass air channel.

EFFECT: simplified design of vacuum cleaner and system of dust discharge unit control.

4 cl, 10 dwg

Description

FIELD OF THE INVENTION

The invention relates to vacuum cleaners, and more particularly to vacuum cleaners that prevent re-adhesion of dust to a dust collector, for example a filter.

State of the art

Known vacuum cleaners include a housing with a chamber, inside which a removable dust collector is installed, an electric fan installed at the outlet of the dust collector chamber, a removable fine filter, for example, a pleated filter for dust collection, installed at the rear outlet of the dust collector chamber, and a dust discharge unit adhering to pleated filter (JP 2004-358135).

The dust discharge unit includes a rotary ring mounted opposite the pleated filter, and a protruding element made on the ring so that it abuts against the pleated filter.

In known vacuum cleaners, when the power supply wire is wound around a coil, the ring is rotated and, under the action of the ring rotation, the protruding element moves, during which it passes through the protruding sections of the pleated filter pleats and causes it to vibrate, as a result of which dust adhering to the filter is reset.

A disadvantage of the known vacuum cleaners is that when the electric fan is turned on, the dust separated from the pleated filter again adheres to it.

From document GB No. 571584, a vacuum cleaner is known that contains an electric fan for sucking dust and air through the suction connecting channel, a dust separation unit for separating incoming dust and air, a dust collector for collecting dust passed through the dust separation unit located separately from the dust separation unit, a dust discharge unit for removing dust from the dust collector and a return device for returning the removed dust to the inlet of the dust separation unit, and the dust separation unit is configured to collect the return dust.

However, this device has a complex structure and a complex control system of the dust discharge unit.

The objective of the invention is to provide a vacuum cleaner of a simplified design, in which re-adhesion of dust to a dust collector, such as a fine filter, is not allowed, and in which dust discharge is easier.

Disclosure of invention

The specified task according to one embodiment of the invention is solved in a vacuum cleaner containing an electric fan for sucking dust and air through a suction hole, a first dust separation unit for separating incoming dust and air, a second dust separation unit for separating dust and air coming from the first dust separation unit, node dust discharge to remove dust adhering to the second dust separation unit, and a return air channel for returning the dust reset by the dust discharge unit to the inlet of the first the separation unit under the action of external air entering through the inlet air duct, the vacuum cleaner comprising a first locking element for closing the air channel located between the outlet of the second dust separation unit and the inlet of the electric fan, a second locking element for closing the air channel located between the first and second dust separation units , a bypass air duct connecting the inlet portion of the electric fan and the outlet portion of the first dust separation unit, a locking element for closing the bypass air channel, an inlet channel for supplying external air to the input of the second dust separation unit and a control unit for controlling the first, second and third locking elements.

Preferably, in the vacuum cleaner, the second dust separation unit comprises a pleated filter, and the dust discharge unit includes a fan configured to interact with the pleated filter and rotated by external air entering through the inlet to remove dust from the pleated filter.

A vacuum cleaner according to another embodiment of the invention comprises an electric fan for sucking dust and air through the suction port, a first dust separation unit for separating incoming dust and air, a second dust separation unit for separating dust and air coming from the first dust separation unit, a dust discharge unit for supplying external air to the input side of the second dust separation unit and the removal of dust adhering to the second dust separation unit under the action of external air, the dust being c contains a first locking element for closing the air channel located between the outlet of the second dust separation unit and the inlet of the electric fan, a second locking element for closing the air channel between the first dust separation unit and the second dust separation unit, an inlet channel for supplying external air to the input side of the second dust separation unit, a bypass air channel directing external air to the output side of the second dust separation unit and a third locking element for trapping dust carried by external air through the bypass air duct.

Preferably, in the vacuum cleaner, the second dust separation unit comprises a pleated filter, and the dust discharge unit includes a fan configured to interact with the pleated filter and configured to rotate under the influence of external air entering through the inlet to remove dust from the pleated filter.

In accordance with the present invention, the dust discharged from the dust collector, for example, from a fine filter, is returned to the dust separation unit and collected there, which prevents the dust from re-sticking to the dust collector.

Brief Description of the Drawings

1 shows a vacuum cleaner in accordance with a first embodiment of the invention, a general perspective view;

figure 2 is a longitudinal section of the housing of the vacuum cleaner shown in figure 1;

figure 3 - dust collecting unit of a vacuum cleaner, a perspective view;

figure 4 - the main part of the dust block, a perspective view;

figure 5 is a transverse section of the dust collecting unit shown in figure 4;

in Fig.6 is a dust collection unit shown in Fig.3, a perspective view from a different direction;

7 schematically shows the orientation of the fan blades of the dust discharge unit in a vacuum cleaner;

on Fig shows a schematic diagram of the air channels in the housing of the vacuum cleaner shown in figure 1;

figure 9 is a longitudinal section of a vacuum cleaner body according to a second embodiment of the invention;

10 is a schematic diagram of air channels in a vacuum cleaner body according to a second embodiment of the invention.

Accepted designations:

24 - electric fan;

57a - a suction connecting channel;

52 - dust separation part;

55 - the first dust separation unit;

104 - pleated filter;

640 - return air channel;

650 - inlet channel;

800 is a fan.

The implementation of the invention

The following describes embodiments of a vacuum cleaner in accordance with the invention with reference to the accompanying drawings.

1 shows a vacuum cleaner in accordance with a first embodiment of the invention. The vacuum cleaner 10 includes a housing 11, a dust collection hose 12, one end of which is connected to a connecting channel 11a of the vacuum cleaner body 11, and a pipe 13 with a handle, a removable extension pipe 14 connected to the pipe 13, and a removable suction element are installed on its other end. 15 mounted on the front end of the extension pipe 14. The handle pipe 13 includes a working portion 13A including a switch 13a with on / off positions for turning on and off the electric fan 24, and a switch 13b with positions strong / weak for control the performance of the electric fan described below. The housing 11 of the vacuum cleaner contains a casing 20, in which a dust collecting unit 50 and an electric fan 24 are located (FIG. 2).

A suction port (not shown) is provided in the lower surface of the suction member 15 to draw dust from a floor or other similar surface. This hole is in communication with a suction chamber (not shown), which is connected through an extension pipe 14, a hose 12 and a connecting channel 11a to a suction connecting channel 57a of the dust collecting unit 50 (Fig. 3) located inside the vacuum cleaner body 11.

As shown in FIG. 2, a valve 600 is arranged inside the connecting channel 11a of the vacuum cleaner body 11, configured to close or open the connecting channel 11a. In the front of the casing 20 is a chamber 22 in which a dust collecting unit 50 is installed.

An electric fan 24 is installed in the rear part of the casing 20 (on the left in FIG. 2), in front of which there is a large diameter connecting air channel 25 with a front opening 25B. In the rear wall 25A of the connecting air channel 25, a connecting hole 25b is made which is connected to the pipe 500 of the air channel having a small diameter. The pipe 500 is in communication with the suction port 24A of the electric fan 24 and includes a first locking element formed, for example, by the valve 501. By opening / closing the valve 501, the suction port 24A of the electric fan 24 and the inside of the connecting air duct 25 are connected or disconnected.

Between the valve 501 and the suction port 24A, the pipe 500 is connected to one end of the bypass air channel 502.

As shown in FIGS. 3-6, the dust collecting unit 50 includes a dust collecting unit 400 and a dust collecting unit 410.

The dust separation unit 400 includes a dust separation part 52 for separating dust and air and collecting dust, and a dust collector for collecting dust passed through the dust separation part 52. The dust collector comprises, for example, a filter assembly 80 and a lid 21A disposed thereon. The dust separation part 52 is configured to swirl the air stream containing dust, while the separation of dust from air occurs under the action of inertia. A detailed description of the dust separation part 52 and the filter assembly 80 will be given below.

The dust collecting unit 410 includes a transparent dust collector 70 made of polymer and a lid 21B located thereon.

As shown in FIG. 4, the dust separation portion 52 includes a cylinder-shaped separation chamber 54 formed by an outer wall 53, a substantially conical first dust separation assembly 55 located in the separation chamber 54 along its axis, a suction channel 56 located outside the right wall 54A a separation chamber 54, and a guide pipe 57 for directing air to the separation chamber 54 from the suction connecting channel 57a through which dust is sucked.

As shown in FIG. 2, the suction connecting channel 57a is connected to the connecting channel 11a of the vacuum unit 11 through a valve 600.

As shown in FIG. 5, an inlet 53A is provided in the upper portion of the outer wall 53 of the separation chamber 54 to allow dust separated from the air to enter the dust collector 70.

In addition, in the right wall 54A of the separation chamber 54, as shown in FIG. 4, a circular hole 154A and a hole 154B in the form of fan blades are made. A first dust separation unit 55 is installed in the hole 154A, and a mesh filter NF2 (not shown) is installed in the hole 154B. A connecting hole is made in the right wall 54A to which the guide tube 57 is connected. Thus, the separation chamber 54 and the guide tube 57 are connected to each other.

The first dust separation unit 55 includes a plurality of frames 55a and a mesh filter NF1 attached to them along their perimeter. The suction channel 56 is connected to the separation chamber 54 through an opening 154A in the right wall 54A and a strainer NF1 (FIG. 5), as well as through a strainer NF2 (not shown) of the hole 154B in the right wall 54A.

The suction channel 56 is in communication with the inside of the housing 81 of the filter assembly 80, as well as with the chamber 73 (described below) of the dust collector body 74 through a connecting hole 56A formed in the right wall 156 (FIG. 5) of the suction channel 56.

The lower part of the suction channel 56 is connected to the other end of the bypass air channel 502 in communication with the pipe 500 of the air channel in the housing 11 of the vacuum cleaner. At the other end of the bypass air duct 502 is a third locking element, which is, for example, an electromagnetic valve 503 configured to close or open the bypass duct 502.

As shown in FIG. 5, the dust collector 70 includes a connecting body 72, in the upper part of which there is a connecting channel 71 extending laterally, as well as a dust collecting case 74 with a dust collecting chamber 73 extending downward from the right end of the connecting housing 72 .

An opening 72A is made in the lower left surface of the connecting housing 72, which is connected to the inlet 53A of the dust separation part 52, as shown in FIG. In the left wall of the housing 74 of the dust collector, a connecting hole 75 is made in which a mesh filter NF3 is installed.

At a predetermined distance from the strainer NF3, a flat cover 170 is mounted on the outer wall of the dust collector body 74, and a hole 170A is made in its lower part.

The hole 170A of the flat cover 170 is connected to the connecting hole 56A of the suction channel 56.

When installing the dust collecting unit 410 in the chamber 22 of the dust collecting unit 11, as shown in FIG. 5, the inlet 53A of the dust collecting part 52 is connected to the opening 72A of the dust collecting unit 410, and the opening 170A of the flat cover 170 is connected to the connecting hole 56A of the suction channel 56 of the dust collecting unit 400 .

As shown in FIGS. 3-6, the filter assembly 80 has an opening on the rear surface and includes a cylindrical housing 81 and a pleated filter assembly 100 installed therein. A dust separation part 52 is mounted on the front wall 84 of the housing 81. The pleated filter assembly 100 includes a pleated filter 104, the plurality of pleats of which extend radially.

The inner part of the housing 81 is in communication with the suction channel 56 (Fig. 5) through the connecting hole 84A (Fig. 6) made in the front wall 84 (Fig. 2) of the housing 81. In the connecting hole 84A, a second locking element is located, which is for example, a valve 700 configured to close or open a connecting hole 84A.

In addition, for returning air from the housing 81 to the dust separation part 52, inside the housing 81, a return device is provided, for example, a return air channel 640. One end of the return device is connected to the lower part of the wall 84 of the housing 81, and the other end is connected to the guide the pipe 57 of the dust separation part 52. At this other end of the return air channel 640, for example, an electromagnetic valve 641 is installed, configured to close or open the return air channel 640.

An inlet channel 650 (FIG. 2) is made in the upper part of the housing 81 for inlet of external air into the housing 81. The intake channel 650 includes, for example, an electromagnetic valve 651 configured to close or open the intake channel 650.

To remove dust from the pleated filter assembly 100, a dust discharge assembly is disposed within the housing 81, which is located between the pleated filter assembly 100 and the front wall 84 of the housing 81 and is a fan 800, the axis of rotation of which is the central axis 101A of the pleated filter assembly 100. The fan 800 is configured to rotate, for example, under the influence of external air coming from the inlet channel 650. The frame 801 of the fan 800 includes at least one protrusion 802 in contact with one of the protruding sections of the pleated filter 104.

As the fan 800 rotates, the protrusion 802 extends over the protruding portions of the pleated filter 104, and therefore, vibration of the pleated filter 104 and the separation of dust adhering to it can be ensured. As shown in FIG. 7, the blades 803 of the fan 800 are oriented so that they receive external air from the inlet channel 650 and direct it to the pleated filter assembly 100. As described above, the dust discharge unit is configured to remove dust from the pleated filter using a fan 800, which rotates under the influence of external air entering through inlet channel 650.

However, the invention is not limited to this dust removal method. For example, dust can be removed by rotating the pleated filter assembly 100 by an electric motor (not shown in the figures) or a similar device, and dust can be discharged from the pleated filter assembly 100, for example, by engaging the fixed leaf spring with protruding portions. In this case, since there is no need to rotate the fan 800, a more uniform air flow from the inlet to the filter assembly can be ensured.

Closing / opening operations of valves 501, 600 and 700 or valves 503, 641, 651 are controlled by a control unit, which is not shown in the figures.

The following describes the operation of the vacuum cleaner of the above construction based on the circuit diagram shown in Fig. 8.

First, as shown in FIG. 2, the dust collecting unit 50 is installed in the chamber 22 of the vacuum cleaner 11, the hose 12 is connected to the connecting channel 11a of the vacuum cleaner body 11, and the suction member 15 is connected to the pipe 13 with a handle through an extension pipe 14, as shown in FIG. .one. At this point, valves 501, 600, and 700 are open, and solenoid valves 503, 641, and 651 are closed.

When the switch 13b of the operating section 13A is turned on, an electric fan 24 is activated, which draws in air through the suction port 24A. As a result, a vacuum is created inside the housing 81 of the dust collecting unit 50 when air is sucked in through the air duct pipe 500 and the connecting air channel 25. Then, a vacuum appears inside the dust collector body or separation chamber 54 of the dust separation part 52 when air is sucked through the suction air channel 56. Also, a vacuum occurs in the hose 12, the extension pipe 14 and the suction element 15 when air is sucked in through the guide pipe 57. Thus, dust and air are sucked in through the suction pipe closure element 15.

The absorbed dust and air are directed into the suction connecting channel 57a of the dust collecting unit 50 through the extension pipe 14 and the hose 12. The dust and air entering the suction connecting channel 57a are supplied through the guide pipe 57 to the separation chamber 54 of the dust separation part 52, and then twisted counterclockwise arrows in the separation chamber 54, as shown in Fig.4.

When the air rotates, dust is separated from the air by inertia, and the air is sucked into the housing 81 of the filter assembly 80 through a mesh filter NF1 (Fig. 5) of the first dust separation unit 55 or through a mesh filter NF2 (not shown) of the hole 154B and then enters intake air duct 56.

On the other hand, the separated dust and part of the air under the influence of inertia enter the connecting housing 72 of the dust collector 70 through the inlet 53A of the separation chamber 54. These dust and air are sucked into the dust collecting chamber 73 through the connecting channel 71 of the connecting housing 72 and the dust is collected in the chamber 73 .

The air that enters the chamber 73 of the dust collector then enters the suction air duct 56 through a mesh filter NF3 and an opening 170A located at the bottom of the flat cover 170 and is then sucked into the housing 81 of the filter assembly 80.

From the housing 81, air is then sucked into the connecting air channel 25 of the vacuum cleaner 11 through the pleated filter 104 of the pleated filter assembly 100, and then enters the suction port 24A of the electric fan 24.

From the suction port 24A, after passing through the inside of the electric fan 24, air is discharged through the exhaust duct 20H of the vacuum cleaner unit 11 shown in FIG. 2, i.e. air moves in the direction of the dash-dotted line with arrows shown in FIG.

After cleaning and turning off the switch 13a of the pipe 13 with the handle, the valves 501, 600 and 700 are closed, and the electromagnetic valves 503, 641 and 651 are opened. The electric fan 24 is turned on with a given performance for a certain period of time.

By closing the valves 501, 600 and 700 and opening the electromagnetic valves 503, 641 and 651, external air flows from the inlet channel 650 into the housing 81 (FIG. 2) of the dust collecting unit 50, as shown in FIG. When this occurs, the rotation of the fan 800, which leads to vibration of the pleated filter 104.

In addition, since the external air entering the blades 803 of the fan 800 moves toward the pleated filter 104, dust adhering to the pleated filter 104 is effectively removed.

As shown by dashed lines with an arrow in FIG. 8, outside air entering the housing 81 is sucked into the inlet side of the dust separation unit 55, i.e. into the guide pipe 57 (FIG. 2) of the dust collecting unit 50 through the return duct 640, and then being sucked into the separation chamber 54 of the dust collecting unit 50 shown in FIG. 5.

The dust separated from the pleated filter 104 passes through the return air channel 640, is moved by the flow of external air and transferred to the separation chamber 54 of the dust collecting unit 50.

The dust is separated from the outside air in the separation chamber 54 and transferred to the dust collector chamber 73, and the outside air is sucked into the intake air duct 56 through the strainer NF1 (FIG. 5) of the first dust separation unit 55 or the strainer NF2 (not shown) of the opening 154B.

As shown by broken lines with arrows in FIG. 8, external air supplied to the suction air duct 56 enters the pipe portion 500 located behind the valve 501 through the bypass air duct 502 and is then sucked into the suction port 24A of the electric fan 24. Then, the electric fan 24 turns off after a certain period of time.

Thus, the dust removed from the pleated filter 104 is transferred to the separation chamber 54 of the dust collecting unit 50.

Therefore, when the electric fan 24 is turned on for cleaning, the dust separated from the pleated filter 104 does not adhere to it again.

Figures 9 and 10 show a vacuum cleaner according to a second embodiment of the invention, in which the pipe 500 of the air channel and the inside of the housing 81 are connected through a bypass air channel 900, in which the third dust separation unit is located. The third dust separation unit comprises, for example, a filter 901 and an electromagnetic valve 902.

In the vacuum cleaner according to the second embodiment of the invention, when the cleaning is performed, the valves 501 and 700 are opened and the electromagnetic valve 902 is closed, while the air moves in the direction of the dot-dash line with arrows shown in FIG. 10. Dust is collected in the dust collector chamber 73, as in the first embodiment.

When the switch 13a (Fig. 1) of the working section 13A of the pipe 13 with the handle is turned on, the valves 501 and 700 are closed, and the electromagnetic valve 902 is opened. The electric fan 24 is turned on with a given capacity for a given period of time.

When the valves 501 and 700 are closed, external air enters from the inlet 650 into the housing 81 of the dust collecting unit 50, which causes the dust to adhere to the pleated filter 104, as in the first embodiment of the invention. External air entering the housing 81 is sucked into the air duct pipe 500 through the bypass air duct 900, and then sucked into the suction port 24A of the electric fan 24, as shown by broken lines with arrows in FIG. 10.

The dust separated from the pleated filter 104 passes through the bypass air channel 900 and is moved by the flow of external air, as in the first embodiment of the invention. Due to the fact that a filter 901 for collecting dust is located in the bypass air channel 900, only air is sucked into the pipe 500 of the air channel.

Thus, the dust separated from the pleated filter 104 is transferred to the bypass air duct 900 and captured by the filter 901, therefore, when the electric fan 24 is driven to perform cleaning, the dust separated from the pleated filter 104 is not sucked in and does not adhere to it. repeatedly.

According to a second embodiment of the invention, the presence of a valve 600, a return air passage 640, or an electromagnetic valve 641 is not necessary.

The invention is not limited to the first and second embodiments described above, and instead of a dust separation part 52 and a dust collector 70, a paper filter may be used in the vacuum cleaner.

It should be noted that the invention allows changes and modifications not exceeding the scope of the claims,

Although the present invention has been described above with reference to a vacuum cleaner, it is not limited to this application. For example, the invention can be applied in air conditioning systems and other similar systems for separating dust from a filter.

Claims (4)

1. A vacuum cleaner comprising an electric fan for sucking dust and air through a suction port, a first dust separation unit for separating incoming dust and air, a second dust separation unit for separating dust and air coming from the first dust separation unit, a dust discharge unit for removing dust adhered to the second dust separation unit, and a return air channel for returning the dust dumped by the dust discharge unit to the inlet of the first dust separation unit under the action of external air supplied through the inlet the th air channel, characterized in that it contains a first locking element for closing the air channel located between the output of the second dust separation unit and the inlet of the electric fan, a second locking element for closing the air channel located between the first and second dust separation nodes, a bypass air channel connecting the inlet section of the electric fan and the output section of the first dust separation unit, the third locking element for closing the bypass air channel, the intake port al for supplying external air to the entrance of the second dust separating unit and a control unit for controlling the first, second and third locking members. 2. The vacuum cleaner according to claim 1, characterized in that the second dust separation unit contains a pleated filter, and the dust discharge unit includes a fan configured to interact with the pleated filter and rotated by external air entering through the inlet to remove dust with pleated filter. 3. A vacuum cleaner containing an electric fan for sucking dust and air through the suction port, a first dust separation unit for separating incoming dust and air, a second dust separation unit for separating dust and air coming from the first dust separation unit, a dust discharge unit for supplying external air to the inlet side of the second dust separation unit and removal of dust adhering to the second dust separation unit under the action of external air, characterized in that it comprises a first locking element for closing the opening of the air channel located between the output of the second dust separation unit and the inlet of the electric fan, a second locking element for closing the air channel between the first dust separation unit and the second dust separation unit, an inlet channel for supplying external air to the input side of the second dust separation unit, a bypass air channel guiding the external air to the output side of the second dust separation unit, and a third locking element for collecting dust carried by external air around bottom air channel. 4. The vacuum cleaner according to claim 3, characterized in that the second dust separation unit contains a pleated filter, and the dust discharge unit includes a fan configured to interact with the pleated filter and configured to rotate under the action of external air entering through the inlet channel to remove Dust with pleated filter.

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