Vacuum cleaner and battery unit

FIELD: human vital needs satisfaction.

SUBSTANCE: vacuum cleaner includes a cleaner body including a suction motor for generation of suction force, a suction unit communicating with the cleaner body and sucking air and dust, and a battery unit for supplying power to the suction motor. The battery unit includes a plurality of battery cells, an inner casing including a plurality of casings for members with a plurality of battery cells respectively arranged therein and spaced apart from each other, and an outer casing with an inner casing housed therein, including a flow channel in which air flows.

EFFECT: increased reliability.

20 cl, 9 dwg

 



 

Same patents:

FIELD: personal use articles.

SUBSTANCE: inventions can be used in central vacuum systems which provide centralised garbage collection without necessity of use collecting bags and containers when cleaning. Drawer for reception of wastes into suction system of waste collection contains bottom and directed upward walls. The bottom and the walls with front and rear parts and outlet from the rear part of the chamber. The box has sealing designed to prevent air passage through the holes in the suction system when the drawer is closed and suction goes to the hole. The box has a bottom which is directed upwards of the opposite side walls bottom and en wall which goes across front end of the side walls as a version. The side walls and end wall form chamber which has broader front part which is narrowing along the legs of Y-shaped part of the side walls to narrower rear part along the base of Y-shaped part of the side walls. The assembly contains the recipient with the hole in it and the drawer which has the ability of sliding in the recipient between the only one closed and opened position. The bottom and the drawer walls which are directed upwards from it forms a chamber with air going through the hole of the recipient when the drawer is closed and the suction is directed to the hole. The sealing of the drawer is designed for to provide hermiticity of the hole in the recipient when the drawer is closed. The recipient is supplied with a switch designed to transfer from the position of turning off when the drawer is closed, to the position of turning on when the drawer is opened. The switch is placed so that the breaker moves from the position of turning off to the position of turning on when the closed drawer opens and from the position of turning on to the position of turning off when the opened drawer closes.

EFFECT: simplification of garbage removal from any operating surfaces, supplied with the component of central vacuum system.

15 cl, 11 dwg

Garbage recipient // 2391036

FIELD: personal use articles.

SUBSTANCE: device is designed to receipt garbage into suction system of garbage collection using components of central vacuum system. The device contains recipient and box with ability if smooth traveling in the recipient between closed and opened positions. The form of external box periphery corresponds the form of internal periphery of the recipient. The box contains bottom and walls directed upwards from the bottom. The bottom and the walls determines borders of the chamber which let air through to the suction hole in the rear part of the recipient when the box is opened and exhaust goes to the hole. The device contains sealing configured to provide hermitic closing of the suction hole when the box is closed. Electric switch of the device has an ability to operate between "off" position when the box is closed and "on" position when the box is opened. The recipient closes the chamber when the box is closed. The base plate is connected to the recipient along the box bottom in the way that the closed box is protected inside of the recipient and base plate. The base plate has a hole inside of itself, and the hole forms suction port in the rear part of the base plate. The sealing provides hermetic closing of the hole in the base plate when the box is closed.

EFFECT: simplification of garbage removal from the floor, table tops, operating surfaces, desks, workbenches and similar operating surfaces.

13 cl, 27 dwg

FIELD: personal demand items.

SUBSTANCE: inventions are related to steriliser. Steriliser for bedclothes comprises body, having area of ultraviolet (UV) radiation deepened into lower surface of body, suction hole arranged in its lower surface, outlet hole arranged in side surface of body, air duct for connection of suction hole and outlet hole and channel that prevents sticking and is deepened into lower surface of body, being joined to suction hole and continuing to side surface for prevention of sterilised object sticking to lower surface. Body includes the first facility of UV radiation for emission of UV beams into area of body UV radiation. Steriliser comprises fan installed in air duct for air exhaust from suction hole to outlet hole, engine for fan actuation, the first filtering unit installed in air duct between suction hole and engine for cleaning of foreign substances in air, functional unit for supply of control signal for engine control and the first facility of UV radiation and control unit for reception of control command from functional unit and control of engine and the first facility of UV radiation. In design version steriliser comprises unit of UV radiation with UV lamp for emission of ultraviolet beams, the first filtering unit installed on air duct between suction hole and engine, and the second filtering unit installed on air duct between engine and outlet hole for filtration of foreign substances in air that has passed through the first filtering unit and engine, and then for sterilisation and extermination of bacteria and destructive insects in filtered foreign substance with the help of some heat generated by engine but not radiated outside. In other design version steriliser comprises impact unit installed in body and protruding outside body in direction of lower surface so that it is possible to strike sterilised object. Impact unit is installed on front end of suction hole in direction of air supply, and unit of UV radiation is installed near front end of impact unit in body and is displaced from surface by specified interval.

EFFECT: development of steriliser for bedclothes, which may easily move on cleaned object, such as bedclothes or carpet, which are easily deformed and soft on contact surface and comprises large amount of substances that contaminate cloth, for sterilisation or extermination of bacteria and destructive insects, such as mites that inhabit surface of cleaned object, and may easily and efficiently remove sterilised or exterminated bacteria and mites.

24 cl, 25 dwg

FIELD: personal effects.

SUBSTANCE: cleaner is designed for wet and dry cleaning the uncovered floor surfaces. The cleaner contains the control lever pivotally connected to the bottom, return system with wet and dry cleaning suction nozzles mounted on the bottom, wet and dry dust return tank, control air duct started from each dry cleaning suction nozzle and wet cleaning suction nozzle to the return tank. The control lever or the bottom accommodates the mounted electromotor/fan assembly to generate control air flow in the control air duct, at least, from dry cleaning suction nozzle or wet cleaning suction nozzle to the return tank. The control air duct starts from each dry cleaning suction nozzle and wet cleaning suction nozzle to the return tank. The control air duct contains the mounted deflector moving between dry cleaning suction position and wet cleaning suction position for selective, at least, partial blocking of the control air flow from wet cleaning suction nozzle and dry cleaning suction nozzle, respectively to the return tank. Besides there is a mounted mechanism connected with the deflector on the control lever to enable the deflector to move between dry cleaning suction position and wet cleaning suction position. According to the performance version the cleaner contains the initiator mounted on the bottom and moving vertically between low position for contact interaction with the cleaned surface and lifted position over the cleaned surface for selective excitation. The cleaner can contain the cut-off valve mounted in the return tank and used to prevent hydrodynamic connection of electromotor/fan assembly and the return tank if liquid level in the return tank reaches the first preset value once the control lever is in the first position forward from the vertical position, and the second preset value different from the first one once the control lever is in the second position back from the vertical position. According to the performance version provided, the cleaner is supplied with bothway holder on the control lever, with the first part adapted for convenient holding with the user hand as the control lever is in dry cleaning suction position, and the second part adapted for convenient holding with the user hand essentially in the similar relative position as the control lever is in wet cleaning suction position.

EFFECT: improved convenience in using the cleaner with simplified design and without auxiliary means.

39 cl, 29 dwg

Vacuum cleaner // 2338452

FIELD: personal effects and household articles.

SUBSTANCE: vacuum cleaner contains case, brush unit, engine for making absorbing power, primary separating chamber, intended for simultaneous separation of water and dirt, contained in outside air, and secondary separating chamber, intended for separating dust, contained in air, released from primary separating chamber. In primary separating chamber element, which ensures initiating movement of water and polluted air, is placed, and secondary separating chamber contains cyclonic chamber for dust collecting. Chamber for dust collecting and primary separating chamber can be made with possibility of being separated from vacuum cleaner case.

EFFECT: increasing efficiency of purification of polluted air absorbed in vacuum cleaner.

11 cl, 5 dwg

FIELD: items for personal and household use.

SUBSTANCE: the cleaning device comprises of a handle unit, cleaning head, pivotally connected with the handle unit and is capable of aligning replaceable cleaning caps for collecting dirt from cleaned floor surface, mounted on the cleaning cap is a spray valve for dispensing cleaning solution onto the surface to be cleaned and suction nozzle, which is held on the cleaning head with the capability of moving between the position of sucking dirt from the floor, whereby the suction nozzle is located near the surface of the floor to be cleaned. The suction nozzle is connected to the dust collecting bag, which is held on the handle unit. The device has a source of suction, which is placed on the handle and intercommunicates with the dust collecting unit and the suction nozzle. The method of cleaning the surface is carried out with the help of the device, comprising of a handling unit, cleaning head, pivotally attached to the handling unit, a system of dispersing cleaning fluid, which is fixed to the handling unit and connected to the spray nozzle, and is held on the cleaning head and sprays cleaning fluid onto the surface. With the help of handling unit one directs the cleaning head on the surface being cleaned with the dirty cleaning fluid from the surface onto the cleaning cap, selectively held by the cleaning head, switches the nozzle between the position of sucking dirt from the floor, whereby the suction nozzle is located close to the surface being cleaned, and the retracted position, whereby the suction nozzle is away from the floor surface, and selectively suck dirt through the suction nozzle, which is held on the cleaning head. The cleaning device is capable of shifting between two separate operating modes. The first operating mode consists of sucking dirt from an area to be cleaned, and the second operating mode involves putting on the surface to be cleaned cleaning fluid, for this reason there is a cleaning cap for collecting dirty cleaning fluid, and also dust and dirt from the surface being cleaned. The cleaning head is hinged to the body of the device and has the capability of selectively holding the cleaning cap, used in the second operating mode of the device. Placing the spraying nozzle on the cleaning head enables dispersion of the cleaning fluid onto the surface in the second operating mode of the device. The device is capable of switching off or stopping dispersion of the liquid to the spraying nozzle in the first operating mode. The suction nozzle is equipped with the capability of transferring fluid with the vacuum fan unit and with the dust collecting unit for carrying out work in the first operating mode. In the variant the device contains a switch, which is capable of changing between the first position for selectively activating the vacuuming and the second position. When the switch is in the second position airflow is stopped, and the system of dispersing the fluid for the cleaning solution is activated.

EFFECT: overall performance of the device is increased.

27 cl, 26 dwg

FIELD: household appliances.

SUBSTANCE: proposed vacuum cleaner has housing, brush unit, brush rotating in contact with surface to be cleaned, water discharge tip and front and rear blocking parts. Dirt and dust suction hole is pointed to surface under cleaning, flow-through communicates with main housing and limits dirt suction channel. Front and rear blocking parts are made in front and rear parts of brush unit on its lower surface for selective opening or closing of dirt suction channel under action of friction force appearing at engagement with surface under cleaning. Front blocking part contains closing shield in form of plate to close dirt suction channel in front part of brush unit, turnable axle made on opposite ends of closing shield and attached for turning to brush unit, and turnable projection in form of sector on side of closing shield whose bow-like section passes from leading edge of closing shield so that leading edge of closing shield recedes from surface under cleaning when bow-like section comes in contact with surface under cleaning. Rear blocking part is made behind rotating brush and it contains upper part secured in groove for accommodating rear blocking part made in brush unit and rear closing shield with flat surface and projecting surface with bosses equally spaced on surface. Pressure is applied from side of surface under cleaning on part of each leading end, flat surface or projecting surface selectively, depending on direction of movement of brush unit. With vacuum cleaner moved forward, its front blocking part opens dirt suction channel, rear blocking part closes dirt suction channel and rear closing shield flexes so that pressure from side of surface under cleaning is applied to flat surface. With vacuum cleaner moving backwards, front blocking part closes dirt suction channel, and rear blocking part opens dirt suction channel and closing shield flexes so that pressure from side of surface under cleaning is applied to projecting surface.

EFFECT: improved reliability of vacuums cleaner in operation, simplified design and reduce wear of blocking parts.

16 cl, 9 dwg

FIELD: household appliances.

SUBSTANCE: proposed cyclone dust-entrapping device is designed for wet-dry vacuum cleaner. Device contains cyclone unit separating dust and dirt and water from sucked in air, dirt receiver made in lower part of cyclone unit and designed for collecting dirt and water separated by cyclone unit, and reservoir for clean water made integral with dirt receiver. Cover for dirt is attached to upper part of dirt receiver, Said cover has aperture for dirt to provide falling of dirt and water separated by cyclone unit into dirt receiver and prevent reverse getting of water and dirt accumulated in receiver into cyclone unit Cyclone unit contains air discharge hole to let out air cleaned from water and dirt. Aperture for dirt is arranged near periphery of lower surface of cover being made of strip of length to form angle from 160° to 180° between opposite ends of said aperture and center of said cover cyclone dust entrapping device can be provided with water blocking member surrounding air discharge hole and designed to prevent discharge of water sucked together with air and provided with cutout part in lower part to let out water passing into inner part of water blocking member. Cutout part of water blocking member has length at which angle between opposite ends of said part and center of water blocking member is approximately 80° to 90°.

EFFECT: improved reliability.

16 cl, 8 dwg

FIELD: design of suction brush for vacuum cleaner.

SUBSTANCE: suction brush includes passage directed to cleaned surface; UV sterilizing lamp mounted in inner region of passage and designed for projecting UV irradiation onto surface; window member made of Teflon and closing inner region. Brush also has window member with openings into which engaging protrusions are inserted. End of each protrusion is compressed for fastening window member over said passage. Method for making suction brush comprises steps of placing UV sterilization lamp inside inner region of passage formed in direction to cleaned surface; joining window member of Teflon by inserting engaging protrusions formed around passage into openings corresponding to said protrusions and formed in window member of Teflon in such a way that to provide ventilation of inner region of passage and fixation of window member of Teflon due to compression of ends of protrusions passing through openings at heating and clamping them.

EFFECT: manufacture of suction brush with UV sterilization lamp that may neutralize contaminations sucked from cleaned surface.

8 cl, 10 dwg

FIELD: vacuum cleaners providing separated collection of dust and liquid.

SUBSTANCE: dust trap device includes housing of cyclone having air receiving opening and air discharging opening. Dust trapping reservoir is communicated with lower part of cyclone housing for accumulation of dust separated from air sucked through air receiving opening. Lower portion of dust trapping reservoir is communicated with receptacle for collecting particles of liquid separated from air sucked through air receiving opening. At least one filter is arranged between said reservoir and receptacle; filter has hole for passing liquid particle under gravity action but trapping dust particles. Dust trapping reservoir is made as one piece with receptacle for liquid accumulation whose lower portion may open and close.

EFFECT: possibility for creating stable suction force in vacuum cleaner due to prevention of reverse flow of liquid particles, sustaining of hygienic condition in dust trapping reservoir.

3 cl, 5 dwg

FIELD: vacuum cleaner for wet and dry sweeping of surface and for filtering of dry media, such as dust, and wet media, such as water.

SUBSTANCE: vacuum cleaner has vacuum creating device, casing with base equipped with receptacle part arranged on its one side, said vacuum creating device being mounted on said side. Inner receptacle standing on base in vertical position has discharge cavity for eliminating interference with said device, space for accommodation of contaminants separating device, inlet opening connected with head movable over surface under cleaning process, and outlet opening in upper part of said space, said outlet opening being adapted for exit of purified air and being formed in discharge cavity. Outer receptacle is mounted on base in vertical position so as to surround inner receptacle, and has first and second through openings corresponding to inlet and outlet openings of inner receptacle, said outer receptacle providing for communication between contaminants separating device and outlet opening, and discharge channel for discharge of air separated in contaminants separating device to the outside through discharge opening of vacuum cleaner casing. Contaminants separating device is detachably positioned in casing and is designed for separating of air, saturated with contaminants and moisture and drawn through inlet opening, into air component and accumulated component consisting of contaminants and water and separated from air component. Casing top opening is hermetically closed with cover. According to another version, vacuum cleaner has through-flow electric engine mounted into receptacle part and adapted for creating vacuum. Inner receptacle mounted on base has discharge cavity for eliminating interference with electric engine. Contaminants receptacle has third through opening for communication with inner receptacle inlet opening. Filtering unit is positioned in contaminants receptacle. Discharge channel for providing communication between filtering unit and discharge opening has first channel made in inner receptacle and communicated with discharge opening, and second channel made in cover and adapted for providing communication between first channel and filtering unit.

EFFECT: simplified construction and removal of contaminants and water from contaminants receptacle.

9 cl, 5 dwg

FIELD: mechanical engineering, in particular, vacuum cleaner with container, which may be used for cleaning of carpet coverings for sucking of contaminations in dry or wet medium.

SUBSTANCE: vacuum cleaner has accumulation container with suction pipe and closed base comprising engine and related fan, electric appliances and control means mounted on base. Connection member is disposed on top surface of base between fan and vertical channel provided in accumulation container, and is substantially a horizontal wall comprising one recess conforming with peripheral part of accumulation container, and edges, with control means being arranged on front edge having lower height. Centering member of accumulation container is provided on top surface of base and is defined by low-height tower centered on engine-fan unit for forming member for connecting the vertical channel of accumulation container. Diameter of tower is equal to or exceeds diameter of engine-fan unit.

EFFECT: improved operating characteristics, simplified handling, maintenance, and operation.

8 cl, 7 dwg

FIELD: air cleaning robot and its system, made with possibility of cleaning air when automatically moving in predetermined zone.

SUBSTANCE: air cleaning robot includes body of robot, drive unit for driving large number of wheels mounted in lower parts of robot body; air cleaning unit mounted in body of robot for suction of dust-laden air in predetermined treated zone, filtering it and discharging cleaned air. Controller is arranged in body of robot and it controls air cleaning unit and drive unit.

EFFECT: enhanced cleaning degree of living rooms due to automatic motion of robot in predetermined zone, improved comfort of using robot.

13 cl, 5 dwg

FIELD: systems for connecting hose with housing of vacuum cleaner for wet/dry cleaning.

SUBSTANCE: apparatus is used for connecting hose to housing of vacuum cleaner in which dust trap is arranged with possibility of extraction. Apparatus includes hose holder mounted in housing of vacuum cleaner and having air intake; hose connecting branch pipe designed for connection with air intake and connected with suction hose; additional connection branch pipe arranged between hose holder and outer peripheral surface of dust trap with possibility of motion between first and second positions; actuating organ for moving additional branch pipe between first and second positions. At first position additional branch pipe is extracted from dust trap and it is shifted to air intake of hose holder. At second position additional branch pipe is moved to connection opening of dust trap. Vacuum cleaner for wet/dry cleaning includes: housing with evacuation system in lower part for creating suction effort; dust trap detachably mounted in housing and having connection opening; cover mounted on housing with possibility of rotation around axle for opening/closing top portion of housing; suction brush connected with housing through suction hose for cleaning surface; apparatus for connecting suction hose with housing. Said apparatus may have tight contact with opening of dust trap at closing cover and it may be shifted by predetermined distance from dust trap without interference to vertical motion of dust trap at opening cover in order to easily extract dust trap from housing of vacuum cleaner.

EFFECT: improved design not needing separation of hose connection branch pipe from housing of vacuum cleaner at extraction of dust trap.

14 cl, 8 dwg

FIELD: robot-vacuum cleaner for purifying of ambient air during cleaning of predetermined area.

SUBSTANCE: robot-vacuum cleaner has casing, wheel drive for driving of wheels disposed in lower part of casing, dust sucking device provided in casing and adapted for drawing of dust from area to be cleaned, and air purifying device provided in casing and adapted for drawing of dust-laden air from area to be cleaned. Robot-vacuum cleaner purifies air and discharges purified air, and also controls drive and air purifying device with the help of controller provided in casing.

EFFECT: increased efficiency in creating of fresh environment in dwelling.

8 cl, 6 dwg

FIELD: wet and dry vacuum cleaner using water and washing solution spraying processes followed by sucking thereof in conjunction with foreign particles which are then separated by means of dust catching apparatus.

SUBSTANCE: dust catching apparatus has dust catching reservoir adapted for catching of water and foreign particles according to cyclone-type catcher and equipped with suction channel formed in such a manner that air is directed along internal peripheral surface of dust catching zone defined therein. Apparatus is equipped with reservoir closing part adapted for selective restricting of dust catching zone and provided with first discharge channel. Float guiding member has inner space communicating with first discharge channel, which is opened or closed by means of float. Plurality of communication apertures are provided along outer peripheral surface of float guiding member. Dust catching filter surrounds peripheral surface of float guiding member in order to filter out foreign particles from air directed from dust catching zone into internal space of float guiding member. Wall defining water obstacle surrounds at least a portion corresponding in its area to suction channel, in spaced relation with respect to outer peripheral surface of dust catching filter. There is dividing plate in dust catching reservoir, said plate being adapted for preventing water from flowing into space outer with respect to dust catching reservoir. Wet and dry vacuum cleaner is provided with main casing incorporating power unit for creating suction force and washing solution feeding part. Dust catching reservoir is mounted within main casing and adapted for separating water and foreign particles from air sucked through nozzle unit and for catching of separated water and foreign particles. Float provided within dust catching reservoir serves for selective closing of communication between dust catching reservoir and power unit.

EFFECT: enhanced reliability in catching of water and foreign particles and more reliable placement of parts provided within water reservoir.

22 cl, 14 dwg

FIELD: vacuum cleaners providing separated collection of dust and liquid.

SUBSTANCE: dust trap device includes housing of cyclone having air receiving opening and air discharging opening. Dust trapping reservoir is communicated with lower part of cyclone housing for accumulation of dust separated from air sucked through air receiving opening. Lower portion of dust trapping reservoir is communicated with receptacle for collecting particles of liquid separated from air sucked through air receiving opening. At least one filter is arranged between said reservoir and receptacle; filter has hole for passing liquid particle under gravity action but trapping dust particles. Dust trapping reservoir is made as one piece with receptacle for liquid accumulation whose lower portion may open and close.

EFFECT: possibility for creating stable suction force in vacuum cleaner due to prevention of reverse flow of liquid particles, sustaining of hygienic condition in dust trapping reservoir.

3 cl, 5 dwg

FIELD: design of suction brush for vacuum cleaner.

SUBSTANCE: suction brush includes passage directed to cleaned surface; UV sterilizing lamp mounted in inner region of passage and designed for projecting UV irradiation onto surface; window member made of Teflon and closing inner region. Brush also has window member with openings into which engaging protrusions are inserted. End of each protrusion is compressed for fastening window member over said passage. Method for making suction brush comprises steps of placing UV sterilization lamp inside inner region of passage formed in direction to cleaned surface; joining window member of Teflon by inserting engaging protrusions formed around passage into openings corresponding to said protrusions and formed in window member of Teflon in such a way that to provide ventilation of inner region of passage and fixation of window member of Teflon due to compression of ends of protrusions passing through openings at heating and clamping them.

EFFECT: manufacture of suction brush with UV sterilization lamp that may neutralize contaminations sucked from cleaned surface.

8 cl, 10 dwg

FIELD: household appliances.

SUBSTANCE: proposed cyclone dust-entrapping device is designed for wet-dry vacuum cleaner. Device contains cyclone unit separating dust and dirt and water from sucked in air, dirt receiver made in lower part of cyclone unit and designed for collecting dirt and water separated by cyclone unit, and reservoir for clean water made integral with dirt receiver. Cover for dirt is attached to upper part of dirt receiver, Said cover has aperture for dirt to provide falling of dirt and water separated by cyclone unit into dirt receiver and prevent reverse getting of water and dirt accumulated in receiver into cyclone unit Cyclone unit contains air discharge hole to let out air cleaned from water and dirt. Aperture for dirt is arranged near periphery of lower surface of cover being made of strip of length to form angle from 160° to 180° between opposite ends of said aperture and center of said cover cyclone dust entrapping device can be provided with water blocking member surrounding air discharge hole and designed to prevent discharge of water sucked together with air and provided with cutout part in lower part to let out water passing into inner part of water blocking member. Cutout part of water blocking member has length at which angle between opposite ends of said part and center of water blocking member is approximately 80° to 90°.

EFFECT: improved reliability.

16 cl, 8 dwg

FIELD: household appliances.

SUBSTANCE: proposed vacuum cleaner has housing, brush unit, brush rotating in contact with surface to be cleaned, water discharge tip and front and rear blocking parts. Dirt and dust suction hole is pointed to surface under cleaning, flow-through communicates with main housing and limits dirt suction channel. Front and rear blocking parts are made in front and rear parts of brush unit on its lower surface for selective opening or closing of dirt suction channel under action of friction force appearing at engagement with surface under cleaning. Front blocking part contains closing shield in form of plate to close dirt suction channel in front part of brush unit, turnable axle made on opposite ends of closing shield and attached for turning to brush unit, and turnable projection in form of sector on side of closing shield whose bow-like section passes from leading edge of closing shield so that leading edge of closing shield recedes from surface under cleaning when bow-like section comes in contact with surface under cleaning. Rear blocking part is made behind rotating brush and it contains upper part secured in groove for accommodating rear blocking part made in brush unit and rear closing shield with flat surface and projecting surface with bosses equally spaced on surface. Pressure is applied from side of surface under cleaning on part of each leading end, flat surface or projecting surface selectively, depending on direction of movement of brush unit. With vacuum cleaner moved forward, its front blocking part opens dirt suction channel, rear blocking part closes dirt suction channel and rear closing shield flexes so that pressure from side of surface under cleaning is applied to flat surface. With vacuum cleaner moving backwards, front blocking part closes dirt suction channel, and rear blocking part opens dirt suction channel and closing shield flexes so that pressure from side of surface under cleaning is applied to projecting surface.

EFFECT: improved reliability of vacuums cleaner in operation, simplified design and reduce wear of blocking parts.

16 cl, 9 dwg

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