WO2001005349A3 - Spa pressure sensing system capable of entrapment detection - Google Patents

Spa pressure sensing system capable of entrapment detection Download PDF

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Publication number
WO2001005349A3
WO2001005349A3 PCT/US2000/040390 US0040390W WO0105349A3 WO 2001005349 A3 WO2001005349 A3 WO 2001005349A3 US 0040390 W US0040390 W US 0040390W WO 0105349 A3 WO0105349 A3 WO 0105349A3
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
system capable
sensing system
pressure sensing
pressure level
Prior art date
Application number
PCT/US2000/040390
Other languages
French (fr)
Other versions
WO2001005349A2 (en
WO2001005349A8 (en
WO2001005349A9 (en
Inventor
William B Mcdonough
Original Assignee
Hydroair A Unit Of Itt Ind Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hydroair A Unit Of Itt Ind Inc filed Critical Hydroair A Unit Of Itt Ind Inc
Priority to AU73868/00A priority Critical patent/AU778753B2/en
Priority to MXPA02000489A priority patent/MXPA02000489A/en
Priority to CA002397892A priority patent/CA2397892A1/en
Priority to JP2001510407A priority patent/JP2003504157A/en
Priority to EP00961996A priority patent/EP1220653A2/en
Publication of WO2001005349A2 publication Critical patent/WO2001005349A2/en
Publication of WO2001005349A3 publication Critical patent/WO2001005349A3/en
Publication of WO2001005349A9 publication Critical patent/WO2001005349A9/en
Publication of WO2001005349A8 publication Critical patent/WO2001005349A8/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/005—Electrical circuits therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0173—Means for preventing injuries
    • A61H2201/0176—By stopping operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5058—Sensors or detectors
    • A61H2201/5071—Pressure sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/50—Presence of foreign matter in the fluid
    • F04B2205/503—Presence of foreign matter in the fluid of gas in a liquid flow, e.g. gas bubbles

Abstract

A control circuit for use with a spa system includes a pressure sensor (70) which generates a signal representative of the pressure in the system. A microcontroller (68) is coupled to receive the signal from the sensor and is configured to store a first pressure level. The microprocessor compares the first pressure level with the subsequently measured pressure level and generates a control signal if the comparison indicates a change in pressure which exceeds a predetermined amount. An electronically controlled switch (54) is coupled to receive the control signal from the microcontroller and turn electrical power to the pump off in response thereto.
PCT/US2000/040390 1999-07-15 2000-07-14 Spa pressure sensing system capable of entrapment detection WO2001005349A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU73868/00A AU778753B2 (en) 1999-07-15 2000-07-14 Spa pressure sensing system capable of entrapment detection
MXPA02000489A MXPA02000489A (en) 1999-07-15 2000-07-14 Spa pressure sensing system capable of entrapment detection.
CA002397892A CA2397892A1 (en) 1999-07-15 2000-07-14 Spa pressure sensing system capable of entrapment detection
JP2001510407A JP2003504157A (en) 1999-07-15 2000-07-14 Hot spring pressure sensing system that can detect blockage
EP00961996A EP1220653A2 (en) 1999-07-15 2000-07-14 Spa pressure sensing system capable of entrapment detection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/354,932 US6227808B1 (en) 1999-07-15 1999-07-15 Spa pressure sensing system capable of entrapment detection
US09/354,932 1999-07-15

Publications (4)

Publication Number Publication Date
WO2001005349A2 WO2001005349A2 (en) 2001-01-25
WO2001005349A3 true WO2001005349A3 (en) 2002-05-02
WO2001005349A9 WO2001005349A9 (en) 2002-08-01
WO2001005349A8 WO2001005349A8 (en) 2003-10-23

Family

ID=23395506

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/040390 WO2001005349A2 (en) 1999-07-15 2000-07-14 Spa pressure sensing system capable of entrapment detection

Country Status (7)

Country Link
US (2) US6227808B1 (en)
EP (1) EP1220653A2 (en)
JP (1) JP2003504157A (en)
AU (1) AU778753B2 (en)
CA (1) CA2397892A1 (en)
MX (1) MXPA02000489A (en)
WO (1) WO2001005349A2 (en)

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US6676831B2 (en) * 2001-08-17 2004-01-13 Michael Lawrence Wolfe Modular integrated multifunction pool safety controller (MIMPSC)
US6779205B2 (en) * 2001-10-18 2004-08-24 Kevin Mulvey Vacuum surge suppressor for pool safety valve
US6715994B2 (en) * 2001-11-12 2004-04-06 Shurflo Pump Manufacturing Co., Inc. Bilge pump
US6623245B2 (en) 2001-11-26 2003-09-23 Shurflo Pump Manufacturing Company, Inc. Pump and pump control circuit apparatus and method
US7083392B2 (en) * 2001-11-26 2006-08-01 Shurflo Pump Manufacturing Company, Inc. Pump and pump control circuit apparatus and method
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US8540493B2 (en) 2003-12-08 2013-09-24 Sta-Rite Industries, Llc Pump control system and method
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US7614094B2 (en) * 2004-03-02 2009-11-10 Michael Lawrence Wolfe Machine and method for proactive sensing and intervention to preclude swimmer entrapment, entanglement or evisceration
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US8177520B2 (en) * 2004-04-09 2012-05-15 Regal Beloit Epc Inc. Controller for a motor and a method of controlling the motor
US20110002792A1 (en) * 2004-04-09 2011-01-06 Bartos Ronald P Controller for a motor and a method of controlling the motor
US20080095639A1 (en) * 2006-10-13 2008-04-24 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
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US7845913B2 (en) 2004-08-26 2010-12-07 Pentair Water Pool And Spa, Inc. Flow control
US7854597B2 (en) 2004-08-26 2010-12-21 Pentair Water Pool And Spa, Inc. Pumping system with two way communication
US7874808B2 (en) * 2004-08-26 2011-01-25 Pentair Water Pool And Spa, Inc. Variable speed pumping system and method
US8480373B2 (en) 2004-08-26 2013-07-09 Pentair Water Pool And Spa, Inc. Filter loading
US7686589B2 (en) 2004-08-26 2010-03-30 Pentair Water Pool And Spa, Inc. Pumping system with power optimization
US8019479B2 (en) 2004-08-26 2011-09-13 Pentair Water Pool And Spa, Inc. Control algorithm of variable speed pumping system
US8602745B2 (en) * 2004-08-26 2013-12-10 Pentair Water Pool And Spa, Inc. Anti-entrapment and anti-dead head function
US7252009B2 (en) * 2004-08-27 2007-08-07 Ashcroft-Nagano, Inc. System and method for pressure measurement
US7100455B2 (en) * 2004-08-27 2006-09-05 Dresser-Nagano, Inc. System and method for pressure measurement
US8281425B2 (en) 2004-11-01 2012-10-09 Cohen Joseph D Load sensor safety vacuum release system
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US7931447B2 (en) * 2006-06-29 2011-04-26 Hayward Industries, Inc. Drain safety and pump control device
US20090038696A1 (en) * 2006-06-29 2009-02-12 Levin Alan R Drain Safety and Pump Control Device with Verification
US20110286859A1 (en) * 2006-06-29 2011-11-24 Gary Ortiz Pump Controller With External Device Control Capability
US20080010983A1 (en) * 2006-07-13 2008-01-17 Emerson Electric Co. Low suction vacuum detector
US20080095638A1 (en) * 2006-10-13 2008-04-24 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
US7690897B2 (en) * 2006-10-13 2010-04-06 A.O. Smith Corporation Controller for a motor and a method of controlling the motor
US20110023225A1 (en) * 2007-11-27 2011-02-03 Victor Kaykov Portable spa with variable speed throttling water massage system
AU2009298834B2 (en) 2008-10-01 2015-07-16 Regal Beloit America, Inc. Controller for a motor and a method of controlling the motor
WO2010042406A1 (en) 2008-10-06 2010-04-15 Pentair Water Pool And Spa, Inc. Method of operating a safety vacuum release system
US8564233B2 (en) * 2009-06-09 2013-10-22 Sta-Rite Industries, Llc Safety system and method for pump and motor
US9556874B2 (en) 2009-06-09 2017-01-31 Pentair Flow Technologies, Llc Method of controlling a pump and motor
US8436559B2 (en) * 2009-06-09 2013-05-07 Sta-Rite Industries, Llc System and method for motor drive control pad and drive terminals
US20110079025A1 (en) * 2009-10-02 2011-04-07 Thermo King Corporation Thermal storage device with ice thickness detection and control methods
EP2526300B1 (en) 2010-02-25 2020-04-22 Hayward Industries, Inc. Universal mount for a variable speed pump drive user interface
MX344350B (en) 2010-12-08 2016-12-13 Pentair Water Pool & Spa Inc Discharge vacuum relief valve for safety vacuum release system.
EP2774009B1 (en) 2011-11-01 2017-08-16 Pentair Water Pool and Spa, Inc. Flow locking system and method
US9885360B2 (en) 2012-10-25 2018-02-06 Pentair Flow Technologies, Llc Battery backup sump pump systems and methods
WO2014143779A2 (en) 2013-03-15 2014-09-18 Hayward Industries, Inc Modular pool/spa control system
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EP4343457A2 (en) 2016-01-22 2024-03-27 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
US11720085B2 (en) 2016-01-22 2023-08-08 Hayward Industries, Inc. Systems and methods for providing network connectivity and remote monitoring, optimization, and control of pool/spa equipment
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Patent Citations (8)

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Publication number Priority date Publication date Assignee Title
US4676914A (en) * 1983-03-18 1987-06-30 North Coast Systems, Inc. Microprocessor based pump controller for backwashable filter
US5167041A (en) * 1990-06-20 1992-12-01 Kdi American Products, Inc. Suction fitting with pump control device
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WO1998036339A1 (en) * 1997-02-13 1998-08-20 Hydroservice S.R.L. A self-regulating computerized proportional control device for a water pump
EP0863278A2 (en) * 1997-03-05 1998-09-09 Plasteral, S.A. System for controlling pump operation
WO1998059174A1 (en) * 1997-06-20 1998-12-30 Arçelik A.S. Electronic control method for drain pumps used in electrical home appliances
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Also Published As

Publication number Publication date
JP2003504157A (en) 2003-02-04
MXPA02000489A (en) 2004-06-22
AU7386800A (en) 2001-02-05
US6227808B1 (en) 2001-05-08
WO2001005349A2 (en) 2001-01-25
EP1220653A2 (en) 2002-07-10
CA2397892A1 (en) 2001-01-25
WO2001005349A8 (en) 2003-10-23
WO2001005349A9 (en) 2002-08-01
AU778753B2 (en) 2004-12-16
US6390781B1 (en) 2002-05-21

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