WO2011106557A1 - Unité de commande de pompe possédant une capacité de commande de dispositif extérieur - Google Patents

Unité de commande de pompe possédant une capacité de commande de dispositif extérieur Download PDF

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Publication number
WO2011106557A1
WO2011106557A1 PCT/US2011/026116 US2011026116W WO2011106557A1 WO 2011106557 A1 WO2011106557 A1 WO 2011106557A1 US 2011026116 W US2011026116 W US 2011026116W WO 2011106557 A1 WO2011106557 A1 WO 2011106557A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
vacuum
controller
fluid
variable speed
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2011/026116
Other languages
English (en)
Inventor
Gary Ortiz
Slawomir Surowinski
James Murdock
Eugene Bright
Bahman Khoshnood
Jason W. Parcell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hayward Industries Inc
Original Assignee
Hayward Industries 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 Hayward Industries Inc filed Critical Hayward Industries Inc
Priority to EP11748086A priority Critical patent/EP2526299A1/fr
Publication of WO2011106557A1 publication Critical patent/WO2011106557A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0201—Current
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0208—Power
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0209—Rotational speed

Definitions

  • the present invention relates to apparatus and methods for controlling pumps and other devices, such as water purifiers, sanitizers, heaters, coolers, and drain safety devices, such as suction vacuum release systems (SVRS) associated with a fluid circulation system, in particular, that of a bathing receptacle such as a swimming pool or spa.
  • pumps and other devices such as water purifiers, sanitizers, heaters, coolers, and drain safety devices, such as suction vacuum release systems (SVRS) associated with a fluid circulation system, in particular, that of a bathing receptacle such as a swimming pool or spa.
  • SVRS suction vacuum release systems
  • Various apparatus and methods have been proposed for controlling pumps and other devices, such as water purifiers, sanitizers, heaters, coolers, and drain safety devices, such as suction vacuum release systems (SVRS) associated with a fluid circulation and treatment system, such as a swimming pool, spa, or decorative water fountain.
  • SVRS suction vacuum release systems
  • digital controllers have been utilized to conduct such functions programmatically and interactively. Due to laws pertaining to the running of pumps at higher and lower rates of speed to diminish the use of electricity, controllers to accomplish this pump speed change have been developed and it is desirable to have a drain safety protection device that is capable of maintaining safety through speed changes. Further, it is an objective to improve the reliability and operability of safety equipment, such as drain safety devices.
  • the controller cuts power to the variable speed motor when the electrical power sensing circuit senses a level of electrical power indicative of a restricted flow of fluid into said suction conduit.
  • FIG. 1 is a schematic diagram of a below-grade fluid containment vessel and fluid circulation system with drain safety and pump control apparatus in accordance with a first embodiment of the present invention.
  • FIG. 9 is a diagram of data structures for storing selected vacuum level and vacuum range data for various fluid circulation functions and at various times.
  • FIGS. 10A -10D and 11A -11 B are circuit diagrams of a controller in accordance with an exemplary embodiment of the present invention.
  • FIGS. 16A and 16B show wiring and terminal diagrams for connecting electrical power and pumps to the control system of FIG. 14.
  • FIG. 20 is a schematic diagram of a pool/spa system.
  • FIG. 22 is a schematic diagram of functional components of a pump controller and an interface thereof with external devices in accordance with an embodiment of the present invention.
  • the pump in some pool/spa installations requires time to establish a prime, viz., the filling of the suction conduit, strainer and pump housing with water. This is normally accomplished by running the pump at high speed.
  • the pump speed (and associated power consumption that is required to prime the pump) is more than that which is required to maintain effective filtration/circulation once prime has been established.
  • Some states have recently passed laws that require pools and spas to have pumps that are operated at two speeds, namely, at high speed to perform certain functions, such as priming and cleaning, and low speed to conduct filtration at a reduced usage of electrical power.
  • the vacuum release system 39 of the present invention monitors for and responds to vacuum anomalies while pump speed changes are executed.
  • Some pools are equipped with automatic cleaners that utilize the return flow of water from the filtration system to drive various pressure cleaner devices.
  • the filtration/circulation pump 30 is switched to high power to generate a pressurized flow that is effective at driving a pressure cleaner 74.
  • Still other pool systems utilize a booster pump 68 to increase the pressure of the return flow of water to enhance the effectiveness of a pool cleaner 74 during cleaning mode.
  • the vacuum release system 39 of the present invention is capable of monitoring drain occlusion and pump malfunction while pool cleaning is occurring and during the transitions from normal filtration running to cleaning mode and from cleaning mode back to normal filtration.
  • the outlet of the booster pump 68 discharges into conduit 70 that is connected to a flexible hose 72 leading to the cleaner 74.
  • Power to the booster pump 68 via line 75 may be controlled by controller 48, manually, or by controller 65.
  • a stop switch 76 may be provided with the vacuum release system 39 or an existing stop switch 76 may be employed to signal the controller 48 that an emergency shut down has been ordered.
  • the stop switch 76 may be a normally open switch maintaining electrical continuity in a conductive loop. When pressed, continuity is disrupted, signaling an emergency shut-down.
  • FIG. 2 shows a pool/spa system S' with a fluid containment vessel V that is above ground level G', as would be common for above-ground pools and spas.
  • the pool/spa system S' has a fluid circulation system 110 with one or more drains 112 at the bottom 116 thereof which communicate with a drain conduit 118 that extends to a valve 120.
  • An upper level drain 122 such as a skimmer, communicates with a corresponding drain conduit 124 that terminates at valve 126.
  • the outlets of the valves 120 and 126 are plumbed to a common suction conduit 128 extending from the valves 120, 126 to a strainer basket 129.
  • the strainer basket 129 discharges into the inlet of a pump 130.
  • the pump 130 discharges into outlet conduit 132 which extends to the inlet of a filter 134.
  • the filter 134 discharges into return conduit 136 (shown broken and labeled R) which discharges filtered water into the vessel 110 via a return outlet 138.
  • a vacuum release system 139 releases/reduces vacuum present in the fluid circulation system 110 in response to anomalies such as drain occlusion.
  • the outlet conduit 132 has a branch 140 which extends to a one-way check valve 143.
  • the check valve 143 allows fluid flow away from the pump 130 only, but not towards the pump 130.
  • the check valve 143 discharges via conduit 145 to an accumulator 147.
  • the accumulator 147 which functions to store fluid under pressure, includes a pressure vessel containing a resilient member 149, such as a spring, a pocket of air, or an elastomeric material acting against a piston 151.
  • the pump 130 pushes fluid under pressure through the filter 134 and also through the check valve 143 into the accumulator 147, where it displaces the piston 151 against the pressure of the resilient member 149.
  • the pressure developed in the accumulator 147 is stored (even when the pressure in outlet conduit 132 drops) due to the resistance to reverse flow attributed to the check valve 143.
  • the controller 148 receives power from a utility supplied power line 152, which extends into a circuit breaker box 154.
  • the controller 148 switches power to the pump 130 on and off via power line 156 and also controls the position of valve 155 via line 158.
  • the occlusion of one of the drains 112 or 122 will trigger a change in the vacuum level present in suction conduit 128.
  • a change in vacuum level is sensed by the vacuum sensor 146 and by the controller 148, which can then respond by opening valve 155 permitting the accumulator 147 to discharge the pressurized fluid contained therein into the suction conduit 128 to pressurize the suction conduit 128 and relieve any vacuum condition that may have previously existed due to an occluded drain.
  • FIG. 5 graphically shows various operating states of the in-ground pool/spa system S, which includes the two speed pump 30 and the booster pump 68 running normally and not effected by the vacuum release system 29.
  • the circulation pump 30 is started in high speed to prime the pump 30. This condition is achieved at or before Ti, whereupon the circulation pump 30 is set to low speed for filtration purposes, i.e., until time T 2 .
  • the circulation pump 30 is again set at high speed to increase the pressure of the return flow to aid in operating the pool cleaner 74.
  • the booster pump 68 is also activated at time T 2 to further increase the pressure of the water reaching the cleaner 74.
  • I pump 68 exceeds that reached by the high speed operation of the circulation pump 30 alone. This would not necessarily be true for all installations.
  • pool/spa owners would manually control the functional state of the circulation systems 10, 110 by, for example, turning the pumps 30, 130, 68 on and off, as necessary.
  • Electro-mechanical timers a clock which mechanically opens and closes contact points
  • digital programmable controllers such as the controller 65
  • the vacuum release systems 39, 139 have the capability of working in conjunction with pool systems that are manually controlled, with electromechanically-timed systems and with digitally controlled systems.
  • the functions and vacuum levels associated with different functional states of the circulation systems are time dependent.
  • the relationship between the vacuum level and time can be used to ascertain appropriate vacuum levels at specific times and/or the. appropriate system response to high or low vacuum levels at specific times. For example, if it is known in advance that a high vacuum level is appropriate during a particular phase of operation, then that high vacuum level can be ignored for a certain period, rather than triggering vacuum release.
  • testing may reveal a vacuum level L D that is above all normal operational levels for any system, i.e., the maximum observed level L M plus a tolerance.
  • This high limit L D may be used as the default criteria for identifying an anomaly, such as an occlusion of the drains 12, 112.
  • This default, high limit-type triggering of vacuum release by the vent valves 42, 44 and/or the accumulator 147 discharge can be utilized without reference to the particular operational state of the pool/spa system, the identity of the system and/or the scheduling or timing of different functional states.
  • the panel protecting the high voltage terminals in the controller housing is removed.
  • the technician can then connect: (1) a remote stop switch, which is normally closed in "run” mode; (2) the terminal pair for a remote alarm relay (normally open - 115 volts @5 Amps); a plurality of terminal pairs to pump motor relays (contactors); and the AC power source (115, 208 or 230 VAC).
  • the power cables to the one or two speed pumps 30, 130 and optional booster pump 68 are connected to AC contactor terminals, routed through the bottom of the housing and connected to the respective pump motors.
  • a malfunction which would cause unexpected pump running would be a motor contactor (relay) which is stuck in the "ON" position, e.g., due to the welding of the contacts (points) thereof.
  • a motor contactor resistor
  • this anomaly is recorded and error processing is invoked starting at connector "E" in FIG. 19E.
  • the present invention may continually adjust the Vacuum Window in a manner similar to the way the priming time criteria is interactively adjusted based upon sensed empirical data, e.g., to compensate for changing conditions in the system S, S', such as a filter 34 that provides changing resistance to fluid flow due to debris accumulation/removal and therefore results in changing levels of vacuum for associated operational states. More particularly, the Vacuum Window may be adjusted upward and downward based upon the measured vacuum for any operational state.
  • FIG. 19E depicts error processing.
  • a failed sensor test 823 results in turning the pumps OFF 825, releasing vacuum 827, posting an error message 829, and turning the alarm ON 831.
  • the controller ascertains 839 if the error was due to an identified loss of pump control, e.g., as indicated by an unexpected vacuum level after turning a pump ON or OFF. If so, the vacuum is released 841 by opening the vent valve, alarms are turned ON 843, an error message is posted 845, and a loop of checking 847 for menu key depression is entered. Once a menu key is pressed indicating the intervention of a human operator, Alarms are turned OFF 854.
  • the controller 410 checks 886 then AC voltage level. If the voltage level is O.K., then processing continues via connector "B" on FIG. 19C. Otherwise, processing returns to Connector "6".
  • the pump controller may also be utilized to control pool lights, 3-way valves, ball valves, lights, alarms, water features, cleaners and any other pool device that may be electronically controlled.
  • the pump controller may also be utilized to control pool lights, 3-way valves, ball valves, lights, alarms, water features, cleaners and any other pool device that may be electronically controlled.
  • the embodiments described herein are merely exemplary and that a person skilled in the art may make many variations and modifications without departing from the spirit and scope of the invention.
  • the present invention has been described above in reference to swimming pools and spas, but could be applied to fountains, water features, water park areas, or other installations where water is pumped into a receptacle and is subsequently drained there from. All such variations and modifications are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

L'invention porte sur une unité de commande de moteur à vitesse variable, cette unité mesurant la charge électrique appliquée sur le moteur qui entraîne une pompe en rotation. Une sortie de l'unité de commande peut être utilisée pour déclencher une soupape d'évent, ou l'alimentation du moteur peut être coupée si le niveau de charge indique un écoulement limité de fluide entrant côté aspiration de la pompe, comme celui qui pourrait être provoqué par une occlusion du drain dans une piscine. Un capteur en communication avec le côté aspiration de la pompe estime un niveau de vide/pression présent et peut être utilisé pour vérifier qu'un état de fonctionnement voulu pour le moteur à vitesse variable et la pompe est actualisé, autrement, un traitement d'anomalie est demandé. Cette surveillance de la pression/vide peut être réalisée par l'intermédiaire des variations de vitesse du moteur/pompe.
PCT/US2011/026116 2010-02-25 2011-02-24 Unité de commande de pompe possédant une capacité de commande de dispositif extérieur Ceased WO2011106557A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11748086A EP2526299A1 (fr) 2010-02-25 2011-02-24 Unité de commande de pompe possédant une capacité de commande de dispositif extérieur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30822310P 2010-02-25 2010-02-25
US61/308,223 2010-02-25

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WO2011106557A1 true WO2011106557A1 (fr) 2011-09-01

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