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1. WO2021067059 - MOTOR CONTROL OF A DRAIN CLEANING MACHINE

Publication Number WO/2021/067059
Publication Date 08.04.2021
International Application No. PCT/US2020/051813
International Filing Date 21.09.2020
IPC
H02P 6/28 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
28Arrangements for controlling current
H02K 29/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
29Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
H02P 6/16 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
14Electronic commutators
16Circuit arrangements for detecting position
H02P 21/00 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
21Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
B08B 9/045 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
08CLEANING
BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
9Cleaning hollow articles by methods or apparatus specially adapted thereto
02Cleaning pipes or tubes or systems of pipes or tubes
027Cleaning the internal surfaces; Removal of blockages
04using cleaning devices introduced into and moved along the pipes
043moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
045the cleaning devices being rotated while moved
B08B 9/023 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
08CLEANING
BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
9Cleaning hollow articles by methods or apparatus specially adapted thereto
02Cleaning pipes or tubes or systems of pipes or tubes
023Cleaning the external surfaces
CPC
B08B 9/023
BPERFORMING OPERATIONS; TRANSPORTING
08CLEANING
BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
9Cleaning hollow articles by methods or apparatus specially adapted thereto
02Cleaning pipes or tubes or systems of pipes or tubes
023Cleaning the external surface
B08B 9/045
BPERFORMING OPERATIONS; TRANSPORTING
08CLEANING
BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
9Cleaning hollow articles by methods or apparatus specially adapted thereto
02Cleaning pipes or tubes or systems of pipes or tubes
027Cleaning the internal surfaces; Removal of blockages
04using cleaning devices introduced into and moved along the pipes
043moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
045the cleaning devices being rotated while moved ; , e.g. flexible rotating shaft or "snake"
H02K 29/00
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
29Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
H02K 7/14
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
14Structural association with mechanical loads, e.g. with hand-held machine tools or fans
H02P 6/08
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
08Arrangements for controlling the speed or torque of a single motor
H02P 6/28
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
6Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
28Arrangements for controlling current
Applicants
  • MILWAUKEE ELECTRIC TOOL CORPORATION [US]/[US]
Inventors
  • TURNER, Christopher, J.
  • ROSE, David
Agents
  • IZZO, Alexander, G.
  • IZZO, Alexander, G.
Priority Data
62/907,82830.09.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MOTOR CONTROL OF A DRAIN CLEANING MACHINE
(FR) COMMANDE DE MOTEUR D'UNE MACHINE DE NETTOYAGE DE CANALISATIONS
Abstract
(EN)
A drain cleaning machine includes a brushless direct current (DC) motor configured to rotate a snake about the snake axis. An electronic processor is configured to control power switching elements to drive the brushless DC motor. In a first operating range when a load experienced by the brushless DC motor is less than or equal to a predetermined load, the electronic processor is configured to control the power switching elements to drive the brushless DC motor at an approximately constant speed regardless of the load experienced by the brushless DC motor. In a second operating range when the load experienced by the brushless DC motor is greater than the predetermined load, the electronic processor is configured to control the power switching elements to drive the brushless DC motor at a decreasing speed as the load experienced by the brushless DC motor increases.
(FR)
L'invention concerne une machine de nettoyage de canalisations qui comprend un moteur à courant continu (CC) sans balais conçu pour faire tourner un furet autour de l'axe de furet. Un processeur électronique est conçu pour commander des éléments de commutation de puissance afin d'entraîner le moteur à courant continu sans balais. Dans une première plage de fonctionnement, lorsqu'une charge subie par le moteur à courant continu sans balais est inférieure ou égale à une charge prédéfinie, le processeur électronique est configuré pour commander les éléments de commutation de puissance afin d'entraîner le moteur à courant continu sans balais à une vitesse approximativement constante indépendamment de la charge subie par le moteur à courant continu sans balais. Dans une seconde plage de fonctionnement, lorsque la charge subie par le moteur à courant continu sans balais est supérieure à la charge prédéfinie, le processeur électronique est configuré pour commander les éléments de commutation de puissance afin d'entraîner le moteur à courant continu sans balais à une vitesse qui diminue lorsque la charge subie par le moteur à courant continu sans balais augmente.
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