EP3622869B1 - Technique for determining friction level of a cleaning surface and managing the friction level by a vacuum cleaner - Google Patents
Technique for determining friction level of a cleaning surface and managing the friction level by a vacuum cleaner Download PDFInfo
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- EP3622869B1 EP3622869B1 EP18193993.5A EP18193993A EP3622869B1 EP 3622869 B1 EP3622869 B1 EP 3622869B1 EP 18193993 A EP18193993 A EP 18193993A EP 3622869 B1 EP3622869 B1 EP 3622869B1
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- Prior art keywords
- friction
- broomstick
- cleaning surface
- vacuum cleaner
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- 238000004140 cleaning Methods 0.000 title claims description 68
- 238000000034 method Methods 0.000 title claims description 36
- 238000001514 detection method Methods 0.000 claims description 49
- 230000008569 process Effects 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000013507 mapping Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 244000007853 Sarothamnus scoparius Species 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
- A47L9/2821—Pressure, vacuum level or airflow
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2805—Parameters or conditions being sensed
- A47L9/2826—Parameters or conditions being sensed the condition of the floor
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
- A47L9/2842—Suction motors or blowers
Definitions
- This invention refers to an arrangement for a vacuum cleaner according to claim 1 and a method for providing an arrangement within a vacuum cleaner according to claim 12.
- a vacuum cleaner one of the household appliances, is a common tool in every household. This electrical household appliance is used to sweep places requires movement with human force. However, different surfaces have different friction coefficients so that a different traction power level is needed. Adjusting the traction power to the surface is a troublesome task for users. For example, while low-strength traction is sufficient on the laminate surface, higher traction settings are required on surfaces such as carpets. It is an old system which is problematic for users to change the power setting manually on each surface. Some users operate the vacuum cleaner at high power throughout the entire sweeping process, unless the traction power is changed. As a result, the energy loss is increasing as the vacuum cleaner runs for a long time.
- Japanese Patent Publication Number JP2015188490 discloses a self-propelled vacuum cleaner which includes a body having a pair of driving wheels, driving wheel driving means for driving the pair of driving wheels individually, a rotary brush provided at a bottom surface of the body; an azimuth detection sensor for detecting the direction of the body, floor surface detection means for detecting a friction resistance value of the floor surface with which the rotary brush comes into contact, and a control unit for controlling individual rotational frequency of the driving wheels with respect to the driving wheel driving means.
- the control unit performs control based on the detection value of the azimuth detection sensor, and performs control of the driving wheel driving means on the basis of the friction resistance value of the floor surface detected by the floor surface detection means.
- Japanese Patent Publication Number JPH06169872 discloses a vacuum cleaner having a floor brush fitted with a vibration detecting means which detects a vibration due to friction with the irregularities of the surface of a cleaning object or the surface of the body, and a mounting and demounting state detecting means to detect whether the brush is lifted.
- the vibration detection means is constituted of a piezoelectric element, a vibration actuator and a vibration spring.
- the demounting state detecting means is constituted of a micro switch and an actuator for causing a mounting and demounting motion.
- Japanese Patent Publication Number JPS648941 discloses an electric cleaner which automatically control a suction flow quantity by detecting friction by a suction part of a floor surface in a suction range, and further determines a condition of the floor surface based on the size of the detected friction, and performs control of suction.
- DE 10 2004 014 252 A1 relates to a vacuum cleaner comprising means for detecting pressure detection.
- It is therefore an object of the present invention is to efficiently detect a friction level of a cleaning surface currently being cleaned by a vacuum cleaner.
- the before mentioned object is solved by the vacuum cleaner according to claim 1 comprising an arrangement.
- An arrangement for a vacuum cleaner which comprises a broomstick, the arrangement comprising a friction detection unit adapted to sense a heat value representative of heat generated while the broomstick is in contact with the cleaning surface, or, a temperature value representative of temperature around an environment of the broomstick and the cleaning surface to be cleaned using broomstick, or a combination thereof.
- the arrangement further comprising a primary processing unit adapted to receive and process the heat, or the temperature, or a combination thereof, and to identify a friction level of the cleaning surface.
- This embodiment is helpful, as it provides a mechanism for identifying friction level based on parameters like temperature or heat generated while the surfaces are in contact.
- the friction coefficient or friction level have a corelation with these parameters, and can be used for more efficiently determining the friction level of the cleaning surface. Once the friction level is identified, a user can manually change the traction level of vacuum cleaner, or the friction level can be further used to automatically change the traction power of the vacuum cleaner.
- the arrangement further comprises a memory storing a lookup table having a mapping of temperature value, or heat value or friction force, or the pressure value, or a combination thereof with respect to the friction levels of the cleaning surface, wherein the primary processing unit is adapted to fetch the friction level of the cleaning surface based on the temperature value, or heat value, or friction force, or pressure value, or a combination thereof.
- This embodiment is beneficial as it provides an efficient mechanism to identify the friction level by using predefined relation between the parameters detected by friction detection ubit, i.e., temperature value, heat, friction force, pressure value, and the friction level.
- the friction detection sensor is placed in proximity to the broomstick of the vacuum cleaner and/or on the outer surface of the head of the vacuum cleaner.
- This embodiment is helpful, as it provides for further sensing of accurate values sensed by the friction detection unit are accurate due to proximity of the detection unit and the source of generation of the heat, temperature, pressure and friction force.
- the source here is the surface of broom stick and the cleaning surface.
- the friction detection unit comprises a temperature sensor adapted to sense the temperature value.
- This embodiment is helpful, as it provides an easy mechanism to sense the temperature values.
- the vacuum cleaner comprises a heat processing module adapted to receive and process the temperature value, and to determine the heat generated while the broomstick is in contact with the cleaning surface.
- This embodiment is helpful, as it provides a mechanism to sense amount of heat generated while the broomstick is in contact with the cleaning surface.
- the friction detection unit comprises a pressure sensor adapted to detect the pressure value applied due to at least one contact between the cleaning surface and the broomstick, or due to the movement of the broomstick onto the cleaning surface, or a combination thereof.
- This embodiment is helpful, as it provides an easy mechanism to sense the pressure values.
- the vacuum cleaner comprises a force processing module adapted to receive and process the pressure value, and to determine the friction force between the broomstick and the cleaning surface being cleaned using broomstick.
- This embodiment is helpful, as it provides a mechanism to sense amount of friction force generated while the broomstick is in contact with the cleaning surface.
- the primary processing unit is further adapted to receive a traction power value representative of the vacuum cleaner, and to process the traction power value along with the temperature value to identify a friction level of the cleaning surface.
- This embodiment is beneficial, as it provides for a mechanism to keep a consideration for traction power is being applied while tracking the temperature values generated. If a traction power value remains substantially unchanged over a period of time, while temperature value changes substantially, it shall pertain to a situation for change of the cleaning surface, hence change in friction level.
- the primary processing unit is adapted to generate a trigger based on the identification of the friction level.
- the arrangement further comprising a control unit adapted to receive the trigger, and to change a traction power level of a traction motor of the vacuum cleaner.
- This embodiment is beneficial, as it automates the process of changing traction power based on the change in friction level of the cleaning surface.
- the friction detection unit is adapted to sense the friction force or the heat, or the temperature, or the pressure value, or a combination thereof, at regular intervals.
- This embodiment is beneficial, as sensing the parameters by the friction detection unit periodically helps in identifying any sudden change in the friction level due to changes in the type of surfaces while the vacuum cleaner is functioning.
- a method for providing an arrangement within a vacuum cleaner comprising placing a friction detection unit in proximity of a broomstick of the vacuum cleaner.
- the friction detection unit adapted to sense a heat generated while the broomstick is in contact with the cleaning surface, or, a temperature around an environment of the broomstick and the cleaning surface to be cleaned using broomstick, or a combination thereof.
- the method further includes coupling a primary processing unit to the friction detection unit.
- the primary processing unit is adapted to receive and process the heat, or the temperature, or a combination thereof, and to identify a friction level of the cleaning surface.
- the method comprises coupling the primary processing unit to a memory.
- the memory stores a lookup table having a mapping of temperature value, or heat or a combination thereof with respect to the friction levels of the cleaning surface.
- the primary processing unit is adapted to fetch the friction level of the cleaning surface based on the temperature value, or heat or friction force, or a combination thereof.
- the method comprises triggering the movement means by using a motor to extend the separator to be in the extended position from the collapsed position, or to collapse the separator be in collapsed position from the extended position.
- the primary processing unit is adapted to generate a trigger based on the identification of the friction level.
- the method further comprising coupling the primary processing unit to a control unit, such that the control unit is adapted to receive the trigger, and to change a traction power level of a traction motor of the vacuum cleaner.
- the present invention focuses on determining friction levels of a cleaning surface being cleaned by a vacuum cleaner. Since the friction coefficient will depend on the surface type, surfaces such as laminate parquet, carpet and tile will be detected by the vacuum cleaner. After the surface type is determined, the traction force will be increased for rough surfaces and will be reduced on a smooth surface where low power is sufficient. The traction force can be changed either manually, or through an automated mechanism.
- Fig. 1 shows a vacuum cleaner 19 having a friction detection unit 2.
- the vacuum cleaner 19 includes a broomstick 20 which comes into contact to a cleaning surface 21 to clean the cleaning surface 21.
- the friction detection unit 2 is placed in proximity to head of the broomstick 20.
- the friction detection unit 2 is responsible for detection of one or more of
- a processor determines friction level of the surface being cleaned or about to be cleaned. And, once the friction level of the cleaning surface 21 is identified, the traction power level of traction motor can be changed automatically or manually.
- the friction detection unit need not be placed in proximity of the head of the broomstick, rather it can be placed at any other location, however in proximity to the contact of the cleaning surface 21 and the broomstick 20.
- Fig. 2 shows a schematic diagram of the arrangement 1 for a vacuum cleaner for determining and managing friction level 8 of a cleaning surface being cleaned.
- the arrangement includes a friction detection unit 2, a primary processing unit 7, and a control unit 17.
- the friction detection unit 2 is capable of identifying two parameters, i.e., temperature value 6 and heat value 5.
- the primary processing unit 7 also receives a traction power value 15 representative of traction power of the vacuum cleaner at a particular timeframe, and process the parameters 5, 6, and identifies the friction level 8 of the cleaning surface currently being cleaned or about to be cleaned.
- the primary processing unit 7 receives temperature values 6 at regular time intervals, and also receives traction power value 15, and if the traction power value 15 remain unchanged in that particular period of time, however the temperature values 6 changes, the primary processing unit 7 identifies that the friction level has changed, and further processes the parameters 5, 6 to determine the friction level 8.
- the primary processing unit 7 do not receive the traction power value 15, and processes one or more parameters, temperature value 6, heat value 5, to determine the friction level 8.
- the arrangement 1 also includes a memory 9 which stores a lookup table 10 which maps friction levels 8 to temperature value 6, heat value 5.
- the lookup table 10 includes mapping of friction levels 8 to any one or more of temperature value 6, heat value 5.
- the primary processing unit 7 while processing the parameters 5, 6, fetches the relevant friction level 8 from the lookup table 10 and determines it to be the friction level 8 of the cleaning surface being cleaned or about to be cleaned.
- the arrangement need not include the memory 9, rather the primary processing unit 7 processes the parameters, temperature value 6, heat value 5. based on certain rules to determine the friction level 8 of the cleaning surface.
- the primary processing unit 7 Based on the friction level 8 of the cleaning surface, the primary processing unit 7 generates a trigger 16 for controlling traction power level of the vacuum cleaner.
- the trigger 16 is further sent to a control unit 17, which processes the trigger 16 to control a traction motor 18 to change the traction power level of the vacuum cleaner.
- the arrangement only determines the friction level 8 of the cleaning surface, while the traction power level of the traction motor 18 is adjusted manually.
- Fig. 3 shows a schematic diagram of a friction detection unit 2.
- the friction detection unit 2 includes a temperature sensor 11, a pressure sensor 13, a heat processing module 12, and a force processing module 14.
- the temperature sensor 11 senses the temperature values 6, while the pressure sensor 13 senses the pressure values 4.
- the temperature values 11 are fed into the heat processing module 12, which processes the temperature value 6 to determine the heat value 5 regarding heat generated while the broomstick is in contact with the cleaning surface.
- the pressure values 4 are fed into the force detection module 14, which process the pressure value 4, and determines the friction force 3 between the broomstick and the cleaning surface being cleaned using broomstick.
- the temperature sensor 11, and the pressure sensor 13 are provided in the friction detection unit 2 in such a way, so that they are in proximity to the head of the broomstick, or in proximity to a contact between the broomstick and the cleaning surface about to be cleaned or being cleaned.
- the friction detection unit only has either the temperature sensor 11 or the pressure sensor 13, and hence is capable of generating only the heat value 5 or the friction force 3, as the case may be.
- the heat processing module 12 and the force processing module 14 are not present or only either of them present. Accordingly, in alternate embodiment, based on the presence of sensors and processing modules, the friction detection unit 2 is adapted to generate one or more of the following parameters, temperature value 6, heat value 5. have a broomstick 20.
- the arrangement 1 includes a friction detection unit 2 which senses a heat value 5 representative of heat generated while the broomstick 20 is in contact with the cleaning surface 21, or, a temperature value 6 representative of temperature around an environment of the broomstick 20 and the cleaning surface 21 to be cleaned using broomstick, or a combination thereof.
- the arrangement 1 also includes a primary processing unit 7 which receives and processes the heat value 5, or the temperature value 6, or a combination thereof, and to identify a friction level 8 of the cleaning surface.
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Description
- This invention refers to an arrangement for a vacuum cleaner according to
claim 1 and a method for providing an arrangement within a vacuum cleaner according toclaim 12. - A vacuum cleaner, one of the household appliances, is a common tool in every household. This electrical household appliance is used to sweep places requires movement with human force. However, different surfaces have different friction coefficients so that a different traction power level is needed. Adjusting the traction power to the surface is a troublesome task for users. For example, while low-strength traction is sufficient on the laminate surface, higher traction settings are required on surfaces such as carpets. It is an old system which is problematic for users to change the power setting manually on each surface. Some users operate the vacuum cleaner at high power throughout the entire sweeping process, unless the traction power is changed. As a result, the energy loss is increasing as the vacuum cleaner runs for a long time.
- Japanese Patent Publication Number
JP2015188490 - Japanese Patent Publication Number
JPH06169872 - Japanese Patent Publication Number
JPS648941 DE 10 2004 014 252 A1 - It is therefore an object of the present invention is to efficiently detect a friction level of a cleaning surface currently being cleaned by a vacuum cleaner.
- The before mentioned object is solved by the vacuum cleaner according to
claim 1 comprising an arrangement. - An arrangement for a vacuum cleaner is described which comprises a broomstick, the arrangement comprising a friction detection unit adapted to sense a heat value representative of heat generated while the broomstick is in contact with the cleaning surface, or, a temperature value representative of temperature around an environment of the broomstick and the cleaning surface to be cleaned using broomstick, or a combination thereof. The arrangement further comprising a primary processing unit adapted to receive and process the heat, or the temperature, or a combination thereof, and to identify a friction level of the cleaning surface.
- This embodiment is helpful, as it provides a mechanism for identifying friction level based on parameters like temperature or heat generated while the surfaces are in contact. The friction coefficient or friction level have a corelation with these parameters, and can be used for more efficiently determining the friction level of the cleaning surface. Once the friction level is identified, a user can manually change the traction level of vacuum cleaner, or the friction level can be further used to automatically change the traction power of the vacuum cleaner.
- Further preferred embodiments are subject-matter of dependent claims and/or of the following specification parts.
- According to a preferred embodiment of the invention, the arrangement further comprises a memory storing a lookup table having a mapping of temperature value, or heat value or friction force, or the pressure value, or a combination thereof with respect to the friction levels of the cleaning surface, wherein the primary processing unit is adapted to fetch the friction level of the cleaning surface based on the temperature value, or heat value, or friction force, or pressure value, or a combination thereof.
- This embodiment is beneficial as it provides an efficient mechanism to identify the friction level by using predefined relation between the parameters detected by friction detection ubit, i.e., temperature value, heat, friction force, pressure value, and the friction level.
- According to a further preferred embodiment of the invention, the friction detection sensor is placed in proximity to the broomstick of the vacuum cleaner and/or on the outer surface of the head of the vacuum cleaner.
- This embodiment is helpful, as it provides for further sensing of accurate values sensed by the friction detection unit are accurate due to proximity of the detection unit and the source of generation of the heat, temperature, pressure and friction force. The source here is the surface of broom stick and the cleaning surface.
- According to another preferred embodiment of the invention, the friction detection unit comprises a temperature sensor adapted to sense the temperature value.
- This embodiment is helpful, as it provides an easy mechanism to sense the temperature values.
- According to a further embodiment of the invention, the vacuum cleaner comprises a heat processing module adapted to receive and process the temperature value, and to determine the heat generated while the broomstick is in contact with the cleaning surface.
- This embodiment is helpful, as it provides a mechanism to sense amount of heat generated while the broomstick is in contact with the cleaning surface.
- According to another preferred embodiment of the invention, the friction detection unit comprises a pressure sensor adapted to detect the pressure value applied due to at least one contact between the cleaning surface and the broomstick, or due to the movement of the broomstick onto the cleaning surface, or a combination thereof.
- This embodiment is helpful, as it provides an easy mechanism to sense the pressure values.
- According to a further embodiment of the invention, the vacuum cleaner comprises a force processing module adapted to receive and process the pressure value, and to determine the friction force between the broomstick and the cleaning surface being cleaned using broomstick.
- This embodiment is helpful, as it provides a mechanism to sense amount of friction force generated while the broomstick is in contact with the cleaning surface.
- According to a further preferred embodiment of the invention, the primary processing unit is further adapted to receive a traction power value representative of the vacuum cleaner, and to process the traction power value along with the temperature value to identify a friction level of the cleaning surface.
- This embodiment is beneficial, as it provides for a mechanism to keep a consideration for traction power is being applied while tracking the temperature values generated. If a traction power value remains substantially unchanged over a period of time, while temperature value changes substantially, it shall pertain to a situation for change of the cleaning surface, hence change in friction level.
- According to another preferred embodiment of the invention, the primary processing unit is adapted to generate a trigger based on the identification of the friction level. The arrangement further comprising a control unit adapted to receive the trigger, and to change a traction power level of a traction motor of the vacuum cleaner.
- This embodiment is beneficial, as it automates the process of changing traction power based on the change in friction level of the cleaning surface.
- According to a further embodiment of the invention, the friction detection unit is adapted to sense the friction force or the heat, or the temperature, or the pressure value, or a combination thereof, at regular intervals.
- This embodiment is beneficial, as sensing the parameters by the friction detection unit periodically helps in identifying any sudden change in the friction level due to changes in the type of surfaces while the vacuum cleaner is functioning.
- The before mentioned object is also solved by a method for providing an arrangement within a vacuum cleaner according to according to
claim 12. - A method for providing an arrangement within a vacuum cleaner comprising placing a friction detection unit in proximity of a broomstick of the vacuum cleaner. The friction detection unit adapted to sense a heat generated while the broomstick is in contact with the cleaning surface, or, a temperature around an environment of the broomstick and the cleaning surface to be cleaned using broomstick, or a combination thereof. The method further includes coupling a primary processing unit to the friction detection unit. The primary processing unit is adapted to receive and process the heat, or the temperature, or a combination thereof, and to identify a friction level of the cleaning surface.
- According to a further preferred embodiment of the invention, the method comprises coupling the primary processing unit to a memory. The memory stores a lookup table having a mapping of temperature value, or heat or a combination thereof with respect to the friction levels of the cleaning surface. The primary processing unit is adapted to fetch the friction level of the cleaning surface based on the temperature value, or heat or friction force, or a combination thereof.
- According to a further embodiment of the invention, the method comprises triggering the movement means by using a motor to extend the separator to be in the extended position from the collapsed position, or to collapse the separator be in collapsed position from the extended position.
- According to another preferred embodiment of the invention, the primary processing unit is adapted to generate a trigger based on the identification of the friction level. The method further comprising coupling the primary processing unit to a control unit, such that the control unit is adapted to receive the trigger, and to change a traction power level of a traction motor of the vacuum cleaner.
- Further benefits, goals and features of the present invention will be described by the following specification of the attached figures, in which components of the invention are exemplarily illustrated. Components of the devices and method according to the inventions, which match at least essentially with respect to their function, can be marked with the same reference sign, wherein such components do not have to be marked or described in all figures.
- The invention is just exemplarily described with respect to the attached figure in the following.
-
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Fig. 1 illustrates a vacuum cleaner having a friction detection unit, according to an embodiment of the invention. -
Fig. 2 illustrates a schematic diagram of the arrangement for a vacuum cleaner for determining and managing friction level of a cleaning surface being cleaned, according to an embodiment of the invention. -
Fig. 3 illustrates a schematic diagram of a friction detection unit, according to an embodiment of the invention. - The present invention focuses on determining friction levels of a cleaning surface being cleaned by a vacuum cleaner. Since the friction coefficient will depend on the surface type, surfaces such as laminate parquet, carpet and tile will be detected by the vacuum cleaner. After the surface type is determined, the traction force will be increased for rough surfaces and will be reduced on a smooth surface where low power is sufficient. The traction force can be changed either manually, or through an automated mechanism.
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Fig. 1 shows avacuum cleaner 19 having afriction detection unit 2. Thevacuum cleaner 19 includes abroomstick 20 which comes into contact to acleaning surface 21 to clean the cleaningsurface 21. Thefriction detection unit 2 is placed in proximity to head of thebroomstick 20. Thefriction detection unit 2 is responsible for detection of one or more of - a heat value representative of heat generated while the
broomstick 20 is in contact with the cleaningsurface 21, - a temperature value representative of temperature around an environment of the
broomstick 20 and thecleaning surface 21 to be cleaned using thebroomstick 20. - Based on the above parameters identified by the friction detection unit, a processor determines friction level of the surface being cleaned or about to be cleaned. And, once the friction level of the cleaning
surface 21 is identified, the traction power level of traction motor can be changed automatically or manually. - In an alternate embodiment, the friction detection unit need not be placed in proximity of the head of the broomstick, rather it can be placed at any other location, however in proximity to the contact of the cleaning
surface 21 and thebroomstick 20. -
Fig. 2 shows a schematic diagram of thearrangement 1 for a vacuum cleaner for determining and managingfriction level 8 of a cleaning surface being cleaned. The arrangement includes afriction detection unit 2, a primary processing unit 7, and acontrol unit 17. - The
friction detection unit 2 is capable of identifying two parameters, i.e.,temperature value 6 andheat value 5. - These parameters,
temperature value 6 andheat value 5 are used as input to the primary processing unit 7. The primary processing unit 7 also receives atraction power value 15 representative of traction power of the vacuum cleaner at a particular timeframe, and process theparameters friction level 8 of the cleaning surface currently being cleaned or about to be cleaned. - In one embodiment, the primary processing unit 7 receives
temperature values 6 at regular time intervals, and also receivestraction power value 15, and if thetraction power value 15 remain unchanged in that particular period of time, however thetemperature values 6 changes, the primary processing unit 7 identifies that the friction level has changed, and further processes theparameters friction level 8. - In an alternate embodiment, the primary processing unit 7 do not receive the
traction power value 15, and processes one or more parameters,temperature value 6,heat value 5, to determine thefriction level 8. - The
arrangement 1 also includes a memory 9 which stores a lookup table 10 which mapsfriction levels 8 totemperature value 6,heat value 5. In one embodiment, the lookup table 10 includes mapping offriction levels 8 to any one or more oftemperature value 6,heat value 5. The primary processing unit 7 while processing theparameters relevant friction level 8 from the lookup table 10 and determines it to be thefriction level 8 of the cleaning surface being cleaned or about to be cleaned. In an alternate embodiment, the arrangement need not include the memory 9, rather the primary processing unit 7 processes the parameters,temperature value 6,heat value 5. based on certain rules to determine thefriction level 8 of the cleaning surface. - Based on the
friction level 8 of the cleaning surface, the primary processing unit 7 generates a trigger 16 for controlling traction power level of the vacuum cleaner. The trigger 16 is further sent to acontrol unit 17, which processes the trigger 16 to control atraction motor 18 to change the traction power level of the vacuum cleaner. In one embodiment, the arrangement only determines thefriction level 8 of the cleaning surface, while the traction power level of thetraction motor 18 is adjusted manually. -
Fig. 3 shows a schematic diagram of afriction detection unit 2. Thefriction detection unit 2 includes atemperature sensor 11, apressure sensor 13, aheat processing module 12, and aforce processing module 14. Thetemperature sensor 11 senses thetemperature values 6, while thepressure sensor 13 senses the pressure values 4. The temperature values 11 are fed into theheat processing module 12, which processes thetemperature value 6 to determine theheat value 5 regarding heat generated while the broomstick is in contact with the cleaning surface. The pressure values 4 are fed into theforce detection module 14, which process thepressure value 4, and determines thefriction force 3 between the broomstick and the cleaning surface being cleaned using broomstick. Thetemperature sensor 11, and thepressure sensor 13 are provided in thefriction detection unit 2 in such a way, so that they are in proximity to the head of the broomstick, or in proximity to a contact between the broomstick and the cleaning surface about to be cleaned or being cleaned. In one embodiment, the friction detection unit only has either thetemperature sensor 11 or thepressure sensor 13, and hence is capable of generating only theheat value 5 or thefriction force 3, as the case may be. In an alternate embodiment, theheat processing module 12 and theforce processing module 14 are not present or only either of them present. Accordingly, in alternate embodiment, based on the presence of sensors and processing modules, thefriction detection unit 2 is adapted to generate one or more of the following parameters,temperature value 6,heat value 5. have abroomstick 20. Thearrangement 1 includes afriction detection unit 2 which senses aheat value 5 representative of heat generated while thebroomstick 20 is in contact with the cleaningsurface 21, or, atemperature value 6 representative of temperature around an environment of thebroomstick 20 and thecleaning surface 21 to be cleaned using broomstick, or a combination thereof. Thearrangement 1 also includes a primary processing unit 7 which receives and processes theheat value 5, or thetemperature value 6, or a combination thereof, and to identify afriction level 8 of the cleaning surface. -
- 1
- arrangement
- 2
- friction detection unit
- 3
- friction force
- 4
- pressure value
- 5
- heat value
- 6
- temperature value
- 7
- primary processing unit
- 8
- friction level
- 9
- memory
- 10
- lookup table
- 11
- temperature sensor
- 12
- heat processing module
- 13
- pressure sensor
- 14
- force processing module
- 15
- traction power value
- 16
- trigger
- 17
- control unit
- 18
- traction motor
- 19
- vacuum cleaner
- 20
- broomstick
- 21
- cleaning surface
Claims (15)
- A vacuum cleaner (19) comprising a broomstick (20) and an arrangement (1), the arrangement (1) comprising:- a friction detection unit (2) adapted to sense a heat value (5) representative of heat generated while the broomstick (20) is in contact with the cleaning surface (21), or a temperature value (6) representative of temperature around an environment of the broomstick (20) and the cleaning surface (21) to be cleaned using broomstick (20), or a combination thereof;- a primary processing unit (7) adapted to receive and process the heat value (5), or the temperature value (6) or a combination thereof, and to identify a friction level (8) of the cleaning surface (21).
- The vacuum cleaner (19) according claim 1,- the friction detection unit (2) being further adapted to sense at least one friction force (3) between the broomstick (20) and a cleaning surface (21) to be cleaned using the broomstick (20), or a pressure value (4) to detect pressure applied due to at least one contact between the cleaning surface (21) and the broomstick (20), or due to a movement of the broomstick (20) onto the cleaning surface (21), or a combination thereof;- the primary processing unit (7) further adapted to receive and process the friction force (3) or the pressure value (4), or a combination thereof, to identify a friction level (8) of the cleaning surface (21).
- The vacuum cleaner (19) according to claim 2 comprising:- a memory (9) storing a lookup table (10) having a mapping of temperature value (6), or heat value (5) or friction force (3), or the pressure value (4), or a combination thereof with respect to the friction levels (8) of the cleaning surface (21), wherein the primary processing unit (7) is adapted to fetch the friction level (8) of the cleaning surface (21) based on the temperature value (6), or heat value (5) or friction force (3), or, pressure value (4), or a combination thereof.
- The vacuum cleaner (19) according to any of the claims 2 or 3, wherein the friction detection unit (2) is placed in proximity to the broomstick (20) of the vacuum cleaner (19).
- The vacuum cleaner (19) according to any of the claims 1 to 4, wherein the friction detection unit (2) comprises a temperature sensor (11) adapted to sense the temperature value (6).
- The vacuum cleaner (19) according to the claim 5 comprising a heat processing module (12) adapted to receive and process the temperature value (6), and to determine the heat value (5) regarding heat generated while the broomstick (20) is in contact with the cleaning surface (21).
- The vacuum cleaner (19) according to any of the claims 2 to 6, wherein the friction detection unit (2) comprises a pressure sensor (13) adapted to detect the pressure value (4) applied due to at least one contact between the cleaning surface (21) and the broomstick (20), or due to the movement of the broomstick (20) onto the cleaning surface (21), or a combination thereof.
- The vacuum cleaner (19) according to the claim 7 comprising a force processing module (14) adapted to receive and process the pressure value (4), and to determine the friction force (3) between the broomstick (20) and the cleaning surface (21) being cleaned using broomstick (20).
- The vacuum cleaner (19) according to any of the claims 1 to 8, wherein the primary processing unit (7) is further adapted to receive a traction power value (15) representative of traction power of the vacuum cleaner (19), and to process the traction power value (15) along with the temperature value (6) to identify the friction level (8) of the cleaning surface (21).
- The vacuum cleaner (19) according to any of the claims 1 to 9, wherein the primary processing unit (7) is adapted to generate a trigger (16) based on the identification of the friction level (8), the arrangement (1) further comprising:- a control unit (17) adapted to receive the trigger (16), and to change a traction power level of a traction motor (18) of the vacuum cleaner (19).
- The vacuum cleaner (19) according to any of the claims 1 to 10, wherein the friction detection unit (2) is adapted to sense the friction force (3) or the heat value (5), or the temperature value (6), or the pressure value (4), or a combination thereof, at regular intervals.
- A method for providing an arrangement within a vacuum cleaner (19) comprising:- placing a friction detection unit (2) in proximity of a broomstick (20) of the vacuum cleaner (19), the friction detection unit (2) adapted to sense a heat value (5) representative of heat generated while the broomstick (20) is in contact with the cleaning surface (21), or a temperature value (6) representative of temperature around an environment of the broomstick (20) and the cleaning surface (21) to be cleaned using broomstick (20), or a combination thereof; and- coupling a primary processing unit (7) to the friction detection unit (2), such that the primary processing unit (7) is adapted to receive and process the heat value (5), or the temperature value (6), or a combination thereof, and to identify a friction level (8) of the cleaning surface (21).
- The method according to claim 12 further comprising:- placing a friction detection unit (2) in proximity of a broomstick (20) of the vacuum cleaner (19), the friction detection unit (2) adapted to sense at least one of a friction force (3) between the broomstick (20) and a cleaning surface (21) to be cleaned using broomstick (20), or a pressure value (4) to detect pressure applied due to at least one contact between the cleaning surface (21) and the broomstick (20), or due to a movement of the broomstick (20) onto the cleaning surface (21), or a combination thereof; and- coupling a primary processing unit (7) to the friction detection unit (2), such that the primary processing unit (7) is adapted to receive and process the friction force (3, or the pressure value (4), or a combination thereof, and to identify a friction level (8) of the cleaning surface (21).
- The method according to claims 12 or 13 comprising:- coupling the primary processing unit (7) to a memory (9), wherein the memory (9) stores a lookup table (10) having a mapping of temperature value (6), or heat value (5) or friction force (3), or the pressure value (4), or a combination thereof with respect to the friction levels (8) of the cleaning surface (21), wherein the primary processing unit (7) is adapted to fetch the friction level (8) of the cleaning surface (21) based on the temperature value (6), or heat value (5) or friction force (3), or pressure value (4), or a combination thereof.
- The method according to any of the claims 12 to 14, wherein the primary processing unit (7) is adapted to generate a trigger (16) based on the identification of the friction level (8), the method further comprising:- coupling the primary processing unit (7) to a control unit (17) such that the control unit (17) is adapted to receive the trigger (16), and to change a traction power level of a traction motor (18) of the vacuum cleaner (19).
Priority Applications (1)
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EP18193993.5A EP3622869B1 (en) | 2018-09-12 | 2018-09-12 | Technique for determining friction level of a cleaning surface and managing the friction level by a vacuum cleaner |
Applications Claiming Priority (1)
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EP18193993.5A EP3622869B1 (en) | 2018-09-12 | 2018-09-12 | Technique for determining friction level of a cleaning surface and managing the friction level by a vacuum cleaner |
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EP3622869A1 EP3622869A1 (en) | 2020-03-18 |
EP3622869B1 true EP3622869B1 (en) | 2023-08-16 |
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Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS648941A (en) | 1987-06-30 | 1989-01-12 | Toshiba Corp | Electric cleaner |
JP2829206B2 (en) | 1992-12-03 | 1998-11-25 | シャープ株式会社 | Electric vacuum cleaner |
DE102004014252A1 (en) * | 2003-12-06 | 2005-06-30 | Vorwerk & Co. Interholding Gmbh | Vacuum cleaner operating method, involves measuring force acting as load and occurring during pull/push operation, where force is felt by user as resistance to operation, and automatically applying counterforce against resistance |
DE102007057589B4 (en) * | 2007-11-28 | 2010-09-30 | BSH Bosch und Siemens Hausgeräte GmbH | Air volumetric flow and pusher force control device |
JP2015188490A (en) | 2014-03-27 | 2015-11-02 | 三菱電機株式会社 | self-propelled vacuum cleaner |
DE102014116978A1 (en) * | 2014-11-20 | 2016-05-25 | Vorwerk & Co. Interholding Gesellschaft mit beschränkter Haftung | Cleaning device with a motor-driven fan and a suction channel |
DE102016118248A1 (en) * | 2015-10-30 | 2017-05-04 | Vorwerk & Co. Interholding Gmbh | Cleaning device, in particular household vacuum cleaner |
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2018
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