KR-20260067165-A - CLEANER

KR20260067165AKR 20260067165 AKR20260067165 AKR 20260067165AKR-20260067165-A

Abstract

A vacuum cleaner is initiated. The filter cleaning device of the vacuum cleaner may include a brush and a turbine. The brush may be positioned to be in contact with a filter portion provided inside a housing. The turbine is rotated by the flow of air. Either the filter portion or the brush rotates relative to the other of the filter portion or the brush by means of the turbine. Through this, foreign matter accumulated on the filter can be cleaned by the brush.

Inventors

임준형
김한신
김시용
한재훈
황인규

Assignees

엘지전자 주식회사

Dates

Publication Date: 20260512
Application Date: 20241105

Claims (20)

Housing with a suction portion formed on one side; A fan motor provided inside the above housing and sucking in air through the above suction part; A cyclone provided inside the above housing and inducing the swirling motion of the air; A filter positioned downstream of the cyclone and upstream of the fan motor based on the air flow direction; and It includes a filter cleaning device that automatically cleans foreign substances stuck in the filter, and The above filter cleaning device is, A filter cleaning unit positioned to contact the above filter; and A cleaner comprising a rotating part connected to the filter and rotating the filter relative to the filter cleaning part.
In paragraph 1, The above fan motor is, An impeller that forms the above air flow; and It includes a drive motor that drives the above impeller, The filter cleaning device above is a cleaner positioned upstream of the impeller based on the direction of air flow.
In paragraph 1, The above fan motor is positioned on the upper part of the cyclone, and The above filter is, A vacuum cleaner including a pre-filter positioned above the fan motor.
In paragraph 1, The above filter is, A vacuum cleaner including a pre-filter positioned upstream of the above-mentioned fan motor.
In paragraph 1, The above cyclone is, A first cyclone equipped with a mesh screen and separating dust from air sucked in through the suction part; and A vacuum cleaner comprising a second cyclone disposed inside the first cyclone and separating fine dust from air passing through the mesh.
In paragraph 1, The above cyclone is, It includes a mesh screen having a plurality of openings that allows the passage of air and restricts the passage of dust contained in the air, and The above filter is, A vacuum cleaner including a pre-filter positioned downstream of the above mesh.
In paragraph 1, The above filter includes a pre-filter, and A vacuum cleaner in which a first cover is connected to the upper part of the housing in a way that allows access to the pre-filter.
In paragraph 1, The above housing is, A dust storage unit for storing dust separated by the above-mentioned cyclone; and It includes a second cover that is openably coupled to the lower part of the housing to discharge dust stored in the dust storage unit, and A vacuum cleaner further comprising a dust emptying station that sucks in and empties dust discharged from the housing through the second cover.
In paragraph 1, It includes a dust emptying station positioned outside the housing, equipped with a dust collection motor, and capable of sucking in and emptying dust stored inside the housing. The above filter is, It includes a pre-filter rotatably mounted inside the above housing, and The above filter cleaning device is, The filter cleaning unit is provided inside the housing to be in contact with the pre-filter and scrapes off foreign matter stuck to the pre-filter; and It includes a turbine connected to the above-mentioned pre-filter and mounted rotatably around a turbine shaft, The above turbine rotates due to the reverse flow of air formed in the opposite direction to the air intake direction of the fan motor according to the operation of the dust collection motor when emptying the dust, and the above pre-filter rotates by receiving rotational power from the turbine.
In Paragraph 9, The above filter cleaning device is, A turbine case accommodating the above turbine; A filter support member mounted so as to be movable in the vertical direction with respect to the turbine case and supporting the pre-filter; and It includes a friction projection provided on one side of the filter support and selectively contacting one side of the turbine case according to a change in the position of the filter support, A vacuum cleaner in which the above friction protrusion is adsorbed to the turbine case by the air suction force of the fan motor when the fan motor is operated, thereby stopping the rotation of the pre-filter.
In Paragraph 10, The above filter cleaning device is, A vacuum cleaner further comprising an elastic member disposed between the filter support and the turbine case, and elastically supporting the filter support so that the filter support returns to its original position when the dust is emptied.
In Paragraph 11, The above elastic member is a vacuum cleaner that is a coil spring.
In Paragraph 9, The above filter cleaning unit is a cleaner composed of a brush in the form of a bristles or a blade having elasticity.
In Paragraph 9, The above turbine is, A hub disposed inside the filter and rotating around the turbine shaft; It includes a plurality of blades formed in a curved shape that bends circumferentially with respect to the radial direction on the outer surface of the above hub, and The turbine is positioned above the fan motor, and The above blade is a vacuum cleaner that induces the axial flow of air passing through the fan motor into a rotational flow from the hub toward the filter when emptying the dust.
In paragraph 1, The above filter cleaning device is, It further includes a reduction gear that reduces the rotational speed of the rotating part and transmits the power of the rotating part to the filter. The above reduction gear is, A vacuum cleaner comprising a plurality of gears connected to the above-mentioned rotating part and the above-mentioned filter.
In paragraph 15, The above reduction gear is, A sun gear connected to the above-mentioned rotating part via a turbine shaft; A plurality of planetary gears meshing with the above-mentioned sun gear; A rack gear that encloses the plurality of planetary gears and meshes with the plurality of planetary gears; and A vacuum cleaner comprising a carrier that connects the aforementioned plurality of planetary gears and is connected to the filter via a reduction shaft.
Housing with a suction portion formed on one side; A fan motor provided inside the above housing and sucking in air through the above suction part; A cyclone provided inside the above housing and inducing the swirling motion of the air; A filter positioned downstream of the cyclone and upstream of the fan motor based on the air flow direction; and It includes a filter cleaning device that automatically cleans foreign substances stuck in the filter, and The above filter cleaning device is, A filter cleaning unit positioned to contact the above filter; and A cleaner comprising a rotating part connected to the filter cleaning part and rotating the filter cleaning part relative to the filter.
In Paragraph 17, It includes a dust emptying station positioned outside the housing, equipped with a dust collection motor, and capable of sucking in and emptying dust stored inside the housing. The above filter is, It includes a pre-filter provided inside the above housing, and The above filter cleaning device is, The filter cleaner, which is in contact with the pre-filter and is mounted inside the housing so as to be rotatable relative to the pre-filter, and scrapes off foreign matter stuck in the pre-filter; and It includes a turbine connected to the filter cleaning unit and mounted rotatably around a turbine shaft, The above turbine rotates by the reverse flow of air formed in the opposite direction to the air intake direction of the fan motor according to the operation of the dust collection motor when emptying the dust, and the filter cleaning unit is a cleaning machine that rotates by receiving rotational power from the turbine.
In Paragraph 18, The above filter cleaning device is, A turbine case accommodating the above turbine; An axial extension portion that wraps around the turbine shaft at the center of the turbine and extends along the axial direction of the turbine shaft; A lifting member protruding radially outward from one end of the above-mentioned shaft extension; and It includes a rotation prevention member mounted on one side of the turbine and optionally in contact with the turbine case, and The above lifting member is pressurized by the air flow formed by the operation of the fan motor, and rises along the turbine shaft together with the turbine, and The above-mentioned anti-rotation member is compressed by the turbine case to stop the rotation of the turbine and the filter cleaning unit.
In Paragraph 18, The above filter is installed inside the housing by means of a filter fixing frame, and A rotation-preventing rib is formed on the inner side of the filter fixing frame to protrude radially inward, and The above filter cleaning device is, A turbine case accommodating the above turbine; A cleaning frame disposed on the outer side of the turbine case and supporting the filter cleaning unit; and It includes a rotation prevention member mounted on one side of the cleaning frame and selectively contacting the rotation prevention rib, and The above cleaning frame rises due to the airflow formed by the operation of the fan motor, and The above-mentioned anti-rotation member is compressed by the above-mentioned anti-rotation rib to stop the rotation of the turbine and the filter cleaning unit.

Description

Cleaner The present invention relates to a vacuum cleaner capable of automatically cleaning a filter. A vacuum cleaner is a device that performs cleaning tasks by sucking up or wiping away foreign substances, such as dust, from an area to be cleaned. Vacuum cleaners are widely used because they can improve cleaning effectiveness and user convenience compared to brooms or mops. Vacuum cleaners can be used indoors or outdoors. However, due to issues such as power supply and hygiene, they are typically used indoors rather than outdoors. Vacuum cleaners can be classified into manual vacuum cleaners and automatic robot vacuum cleaners. In the case of manual vacuum cleaners, the user moves the vacuum cleaner directly to perform cleaning tasks. Manual vacuum cleaners can be classified into canister type vacuum cleaners, upright type vacuum cleaners, handheld vacuum cleaners, stick vacuum cleaners, etc., depending on the form of the vacuum cleaner. Generally, vacuum cleaners can be equipped with a filter in the airflow path. However, as cleaning is performed repeatedly using a vacuum cleaner, foreign matter may accumulate on the filter. As a result, if cleaning is performed with foreign matter accumulated on the filter, there is a problem where cleaning performance is degraded. To resolve these problems, a dust separator is disclosed in prior art document WO 2023/089298 A1 (hereinafter referred to as 'Patent Document 1'). According to Patent Document 1, a moving member is mounted inside a vacuum cleaner so as to be movable by an operating part. The moving member is positioned to surround a filter. The moving member has a plurality of protrusions that protrude toward the filter so as to be able to contact the outer surface of the filter. When the user manually operates the control unit to move the movable member, the protrusions of the movable member shake off dust accumulated on the inner surface of the filter, allowing the filter to be cleaned. However, Patent Document 1 has the inconvenience of requiring the user to perform filter cleaning work manually whenever dust accumulates on the filter. In addition, Patent Document 1 has a problem of reduced filter cleaning performance because it does not scrape off the dust accumulated on the inner surface of the filter, but rather shakes off the dust by applying pressure to the outer surface of the filter opposite to the inner surface where dust has accumulated. In addition, Patent Document 1 states that foreign substances such as dust remain on the filter because the user has not familiarized themselves with the method of operating the control unit for cleaning the filter or has forgotten to use the control unit with the filter cleaning function. As a result, due to foreign matter remaining in the filter, air intake may not be smooth, and cleaning may not be performed properly. Furthermore, if air is not supplied or expelled smoothly, heat is generated in the vacuum cleaner, which leads to malfunctions and a shortened lifespan. A dust collector, a vacuum cleaner, and a cleaning device are disclosed in prior art patent document KR 10-2023-0089508 A (hereinafter referred to as 'Patent Document 2'). According to Patent Document 2, the cleaning device comprises a vacuum cleaner station that automatically empties foreign substances, such as dust, stored in the dust storage unit of the vacuum cleaner, a cyclone module that induces a swirling airflow, and a rotating part that rotates a mesh filter that filters dust from the air before the air flows into the cyclone module. However, the rotating part of Patent Document 2 is intended to rotate the mesh filter to smoothly discharge foreign substances stored inside the dust collector, but it does not have a function to clean the filter itself, such as removing foreign substances stuck in the mesh filter. In addition, if unfiltered dust gets stuck between the rotating parts, there is a problem where the mesh filter does not rotate smoothly. FIG. 1 is a conceptual diagram showing a vacuum cleaner according to an embodiment of the present invention mounted on a dust emptying station. Figure 2 is a cross-sectional view of the vacuum cleaner in Figure 1, and is a conceptual diagram for explaining the internal configuration of the vacuum cleaner. Figure 3 is a conceptual diagram showing a turbine and a filter rotating together using the reverse airflow inside the vacuum cleaner generated when air is sucked in by the dust collection motor of the dust emptying station, with the view of the enlarged section III in Figure 1. Figure 4 is a conceptual diagram showing the brush mounted on the inner surface of the upper Euro housing and the inner surface of the upper cover in Figure 3. Figure 5 is a conceptual diagram showing the brush mounted on the inner surface of the upper Euro housing and the inner surface of the upper cover in Figure 4, viewed from below. Figure 6 is a conceptual diagram showing the filter in Figure 3 accommodated in the