WO2020163336A1 - A cleaning system comprising a system for preventing the motor from overheating and a method therefore - Google Patents
A cleaning system comprising a system for preventing the motor from overheating and a method therefore Download PDFInfo
- Publication number
- WO2020163336A1 WO2020163336A1 PCT/US2020/016587 US2020016587W WO2020163336A1 WO 2020163336 A1 WO2020163336 A1 WO 2020163336A1 US 2020016587 W US2020016587 W US 2020016587W WO 2020163336 A1 WO2020163336 A1 WO 2020163336A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- cleaning system
- integral
- over time
- signal over
- Prior art date
Links
Classifications
-
- 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
- A47L9/2831—Motor parameters, e.g. motor load or speed
-
- 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
- A47L5/24—Hand-supported suction cleaners
-
- 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
- A47L5/24—Hand-supported suction cleaners
- A47L5/26—Hand-supported suction cleaners with driven dust-loosening tools
-
- 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
-
- 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
- A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
Definitions
- Embodiments relate to tools, such as but not limited to, cleaning systems or cleaners.
- Tools such as cleaners, may include one or more motors. During operation, the motor may overheat. Monitoring a temperature of the motor may prevent overheating.
- Existing methods of preventing overheating include hardware devices (such as a thermal cut off) that cut off power to the motor when a predetermined temperature is met. Such hardware devices may add cost to tools.
- one embodiment provides a cleaning system including a body, a motor supported by the body, a sensor configured to sense a characteristic of the motor , the characteristic selected from a group consisting of current, voltage, and power.
- the system further includes a controller.
- the controller is connected to the motor and the sensor.
- the controller includes an electronic processor and a memory.
- the controller is configured to receive, from the sensor, a signal indicative of the characteristic of the motor, determine, based on the signal, an integral of the signal over time, and operate the motor based on the integral of the signal over time.
- Another embodiment provides a method of operating a cleaning system having a motor.
- the method includes receiving, from a sensor, a signal indicative of a characteristic of the motor selected from a group consisting of current, voltage, and power. Determining, via a controller and based on the signal, an integral of the signal over time, and operating the motor based on the integral of the signal over time.
- FIG. 1 is a perspective view of a system according to some embodiments.
- FIG. 2 is a side view of the system of Fig. 1 according to some embodiments.
- FIG. 3 is a perspective view of the system of Fig. 1 according to some
- Fig. 4 is a block diagram of a control system of the system of Fig. 1 according to some embodiments.
- Fig. 5 is a flow chart illustrating an operation of the system of Fig. 1 according to some embodiments.
- Fig. 6 is a flow chart illustrating an operation of the system of Fig. 1 according to some embodiments.
- Fig. 7 is a chart illustrating one or more characteristics of the system of Fig. 1 over time according to some embodiments.
- Fig. 8 is a chart illustrating an integration of a characteristic of the system of Fig.
- Figs. 1 and 2 illustrate a system 100 according to some embodiments.
- the system 100 may be configured to clean a surface (for example, a floor such as a hardwood floor, a carpeted floor, upholstery, etc.).
- a surface for example, a floor such as a hardwood floor, a carpeted floor, upholstery, etc.
- the system 100 may be another type of vacuum, such as but not limited to, an upright vacuum cleaner or a stick vacuum cleaner.
- the system 100 may be a power tool, such as but not limited to, a drill, a driver, and a circular saw.
- the system 100 may include a housing 105 having a nozzle assembly 110 and a handle assembly 115.
- the nozzle assembly 110 may include a nozzle opening 120.
- the handle assembly 115 may include a handle 125 having a grip 130 for a user to grasp.
- the handle may further include a user-interface 127.
- user- interface 127 includes a switch or button 129, or other operative interface.
- the handle assembly 115 may further include, and/or support, a canister 135.
- the canister 135 may include a separator configured to remove dirt particles from an airflow drawn into the system 100 that is then collected by the canister 135.
- the separator may be a cyclonic separator, a filter bag, and/or another separator.
- the system 100 may further include a suction motor 140 (Fig. 4) contained within a motor housing 145 of the housing 105.
- the suction motor 140 is coupled to a suction source, such as but not limited to, an impeller or fan assembly driven by the suction motor 140. Air and/or debris is drawn through the nozzle opening 120 via the suction motor 140.
- the housing 105 may further include a battery receptacle 150.
- the battery receptacle 150 is configured to physically and/or electronically couple to a battery pack 155.
- the battery pack 155 may be configured to supply power to the system 100 for operation.
- the system 100 may include a power cord configured to receive power from an AC power source (for example, an AC power outlet).
- Fig. 3 illustrates the system 100 according to another embodiment.
- the system 100 may further include a base assembly 200.
- the base assembly 200 may include a floor nozzle 205. After entering through the floor nozzle 205, air and/or debris may pass through the nozzle opening 120, which may be in fluid communication with the separator and/or suction motor 140.
- the base assembly 200 includes one or more wheels 210.
- the base assembly 200 may further include a brush roll powered via a brush roll motor 215 (Fig. 4).
- Fig. 4 is a block diagram of a control system 300 of the system 100 according to some embodiments.
- the control system 300 includes a controller 305.
- the controller 305 is electrically and/or communicatively connected to a variety of modules or components of the system 100.
- the controller 305 is connected to the user-interface 127, suction motor 140, the brush roll motor 215, a power supply 310, an input/output (I/O) module 320, and one or more sensor 325.
- I/O input/output
- the controller 305 includes a plurality of electrical and electronic components that provide power, operational control, and protection to the components and modules within the controller 305 and/or the system 100.
- the controller 305 includes, among other things, an electronic processor 330 (for example, a microprocessor or another suitable programmable device) and the memory 335.
- the memory 335 includes, for example, a program storage area and a data storage area.
- the program storage area and the data storage area can include combinations of different types of memory, such as read-only memory (ROM), random access memory (RAM).
- ROM read-only memory
- RAM random access memory
- Various non-transitory computer readable media, for example, magnetic, optical, physical, or electronic memory may be used.
- the electronic processor 330 is
- the software may include one or more applications, program data, filters, rules, one or more program modules, and other executable instructions.
- Power supply 310 is configured to supply nominal power to the controller 305 and/or other components of the system 100. As illustrated, in some embodiments, the power supply 310 receives power from the battery pack 155 and provides nominal power to the controller 305 and/or other components of the system 100. In other embodiments, the power supply 310 may receive power from an AC power source (for example, an AC power outlet).
- an AC power source for example, an AC power outlet
- the one or more sensors 325 are configured to sense one or more characteristics of the system 100.
- the one or more sensors 325 include a voltage sensor, a current sensor, an ultrasonic sensor, an air flow sensor, a pressure sensor and/or an infrared sensor.
- the one or more sensors 325 are configured to sense one or more characteristics (for example, a voltage, a current, and/or a power) of the suction motor 140 and/or brush roll motor 215.
- a user operates the button 129 to activate the system 100. In such an embodiment, when button 129 is operated, power is provided to the suction motor 140 and/or brush roll motor 215.
- the one or more sensors 325 sense one or more characteristics (for example, a voltage, a current, and/or a power) of the suction motor 140 and/or brush roll motor 215.
- Fig. 5 is a flowchart illustrating a process, or operation, 400 for operating system 100 according to some embodiments. It should be understood that the order of the steps disclosed in process 600 could vary. Furthermore, additional steps may be added and not all of the steps may be required.
- One or more characteristics of the suction motor 140 and/or brush roll motor 215 are sensed (block 405).
- a temperature of the suction motor 140 and/or brush roll motor 215 is determined based on the one or more sensed characteristics (block 410). In some embodiments, the temperature is determined by the controller 305. The temperature is compared to a temperature threshold (block 415). If the temperature crosses the threshold, the suction motor 140 and/or brush roll motor 215 is shut down (block 420). If the temperature does not cross the threshold, operation 400 cycles back to block 405.
- Fig. 6 is a flowchart illustrating a process, or operation, 500 for determining a temperature of the suction motor 140 and/or brush roll motor 215 according to some embodiments. It should be understood that the order of the steps disclosed in process 600 could vary. Furthermore, additional steps may be added and not all of the steps may be required.
- a characteristic of the motor is sensed (block 505). In some embodiments, the characteristic is a current. In some embodiments, the characteristic is a power. In such an embodiment, the power may be determined by multiplying a sensed current and a sensed voltage.
- Fig. 7 is a chart 600 illustrates a plurality of characteristics (a current 605, a voltage 610, a power 615, and a temperature 620) of a motor (for example, suction motor 140 and/or brush roll motor 215) over time.
- An integral of the characteristic over a time period is then determined (block 510).
- the integral is determined via the controller 305.
- Fig. 8 is a chart 700 illustrating an integral of power versus temperature.
- the motor may then be controlled based on the integral of the characteristic over time (block 515). For example, if the integral crosses a predetermined threshold, operation of the motor may be halted.
- the temperature of the motor is determined based on the integral. In some embodiments, the temperature of the motor is determined using Equation 1 below.
- Temp motor temperature
- Power integrated power
- Efficiency motor efficiency curve.
- the temperature of the motor is determined based on an area of the integral over time.
- the heat dissipated by the system 100 may be estimated based on empirical information relating to the motor operating in the system 100, including temperature of the motor when drawing particular current levels at a predetermined ambient temperature.
- the system 100 includes a thermistor positioned to represent the ambient air temperature that the system 100 is operating in, and wherein the heat dissipated by the system is a function of the ambient air temperature.
- the empirical data relating to the motor may be offset or compensated based on the ambient air temperature the system 100 is operating in.
- Another factor in estimating the heat dissipated by the system 100 in some use scenarios is the length of time the motor is not operating, or cooling time, measured from when the motor was turned off, particularly if the cooling time is less than a predetermined interval, such as 3 minutes, or 5 minutes, or 10 minutes, or other predetermined interval.
- the system 100 includes a timer that starts counting the cooling time after the motor is turned off. In this embodiment, if the motor is turned on within the
- the heat dissipated by the system 100 is a function of the cooling time.
- the heat dissipated by the system 100 is a function of the cooling time and the ambient air temperature.
- the system 100 may include a battery or a hold-up capacitor that powers the timer after the motor is turned off.
- the system 100 may be a battery operated system 100 and the system battery powers the timer after the motor is turned off.
- operation of the motor may be halted when a max efficiency is met.
- operation of the motor is based on the integral of the sensed characteristic, and thus the max efficiency may be surpassed and the motor still be allowed to operate.
- embodiments provide, among other things, a system and method for operating a motor based on an integral of a characteristic of the motor over time.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20709048.1A EP3920766A1 (en) | 2019-02-06 | 2020-02-04 | A cleaning system comprising a system for preventing the motor from overheating and a method therefore |
US17/428,431 US20220104671A1 (en) | 2019-02-06 | 2020-02-04 | A cleaning system comprising a system for preventing the motor from overheating and a method threfore |
AU2020218752A AU2020218752A1 (en) | 2019-02-06 | 2020-02-04 | A cleaning system comprising a system for preventing the motor from overheating and a method therefore |
CN202080024371.7A CN113613537A (en) | 2019-02-06 | 2020-02-04 | Cleaning system including system for preventing overheating of motor and method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201962801758P | 2019-02-06 | 2019-02-06 | |
US62/801,758 | 2019-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020163336A1 true WO2020163336A1 (en) | 2020-08-13 |
Family
ID=69740837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2020/016587 WO2020163336A1 (en) | 2019-02-06 | 2020-02-04 | A cleaning system comprising a system for preventing the motor from overheating and a method therefore |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220104671A1 (en) |
EP (1) | EP3920766A1 (en) |
CN (1) | CN113613537A (en) |
AU (1) | AU2020218752A1 (en) |
WO (1) | WO2020163336A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1656874A2 (en) * | 2004-11-12 | 2006-05-17 | Matsushita Electrical Industrial Co., Ltd | Vacuum cleaner with motor overheating safety device |
US20110265285A1 (en) * | 2010-04-30 | 2011-11-03 | Morgan Charles J | Upright vacuum with reduced noise |
EP2387929A1 (en) * | 2008-12-26 | 2011-11-23 | Kabushiki Kaisha Toshiba | Electric vacuum cleaner |
DE102014108479A1 (en) * | 2014-06-17 | 2015-12-17 | Miele & Cie. Kg | Method and adjusting device for adjusting an operating performance of a suction device, a handle for guiding a suction device and a suction device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US4070586A (en) * | 1976-08-23 | 1978-01-24 | Beamco, Inc. | Electric vacuum cleaning and agitator motor control system |
AU558744B2 (en) * | 1983-02-12 | 1987-02-05 | Matsushita Electric Industrial Co., Ltd. | Electric vacuum cleaner |
JP3080339B2 (en) * | 1992-06-30 | 2000-08-28 | 松下電工株式会社 | Electric curtain drive |
US7222050B2 (en) * | 2004-07-13 | 2007-05-22 | Seiko Epson Corporation | Apparatus for determining overheating of motor, method for determining overheating of motor, computer-readable medium, motor control apparatus, motor control method, and printing apparatus |
US8179064B2 (en) * | 2007-10-16 | 2012-05-15 | Arcfl Technology Limited | Electric motor protection system |
TWI625929B (en) * | 2017-07-20 | 2018-06-01 | 益航電子股份有限公司 | Motor apparatus and motor driving circuit |
-
2020
- 2020-02-04 EP EP20709048.1A patent/EP3920766A1/en not_active Withdrawn
- 2020-02-04 CN CN202080024371.7A patent/CN113613537A/en active Pending
- 2020-02-04 AU AU2020218752A patent/AU2020218752A1/en not_active Abandoned
- 2020-02-04 WO PCT/US2020/016587 patent/WO2020163336A1/en unknown
- 2020-02-04 US US17/428,431 patent/US20220104671A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1656874A2 (en) * | 2004-11-12 | 2006-05-17 | Matsushita Electrical Industrial Co., Ltd | Vacuum cleaner with motor overheating safety device |
EP2387929A1 (en) * | 2008-12-26 | 2011-11-23 | Kabushiki Kaisha Toshiba | Electric vacuum cleaner |
US20110265285A1 (en) * | 2010-04-30 | 2011-11-03 | Morgan Charles J | Upright vacuum with reduced noise |
DE102014108479A1 (en) * | 2014-06-17 | 2015-12-17 | Miele & Cie. Kg | Method and adjusting device for adjusting an operating performance of a suction device, a handle for guiding a suction device and a suction device |
Also Published As
Publication number | Publication date |
---|---|
CN113613537A (en) | 2021-11-05 |
EP3920766A1 (en) | 2021-12-15 |
US20220104671A1 (en) | 2022-04-07 |
AU2020218752A1 (en) | 2021-09-23 |
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