No assignee for this patent application has been made.
News editors obtained the following quote from the background information supplied by the inventors: "A swimming pool pump or spa recirculating control system to control the operation of a recirculating pump.
"Various efforts have been undertaken to design a pool water pump control to protect the operation of a circulating pump as well as improve energy efficiency by controlling the pump run time. Examples of the prior art and disclosures are shown below.
"U.S. Pat. No. 7,484,938 teaches an electronic pool pump timer to control the run time of a pump for a period of time each day depending on the date. In the preferred embodiment, the user enters the historical daily maximum and minimum pump run times for the specific pool to calculate the required time the pump will run on a given day. The run time is calculated as a function of the date and the minimum and maximum run times for a given pool. The system then self-adjusts the run time each day as necessary. The device comprises a data input means, a display, memory, and a controller. To prevent the pool from freezing, the system may also include an air temperature sensor that activates the pump operation when the ambient air is below a predetermined temperature.
"U.S. Pat. No. 6,079,950 discloses a control system for a swimming pool or a spa recirculating system that draws water from a pool or spa through a pump and filter and back to the pool. A controller is operated to initiate operation of the pump at pre-established time intervals. The length of time or duty cycle that the pump is operated at each of these time intervals is determined by a temperature sensor which senses the water temperature. The temperature sensor supplies a signal to the controller to cause the pump to be operated for a longer period of time when the water temperature is above a threshold temperature and to be operated for a shorter period of time when the water temperature is below the predetermined threshold.
"U.S. Pat. No. 4,204,196 shows an electronic timer used for producing command signals to initiate and discontinue the operation of external devices such as pool pumps, lights, and the like. The timer includes a common bus to which there are applied a plurality of parallel pulse signals that in combination define a timing interval divided into a sequence of time slots. A plurality of independently operable decoders are connected to the common bus so that all the decoders continuously monitor the parallel pulse signals. Preferably, the plurality of parallel pulse signals are generated in a control center module and applied to the common bus which propagates the signal to one or more other modules each of which contains at least a pair of the independently operable decoders. Each such decoder includes gating circuitry operable to produce a command signal and further includes a manually adjustable input for completing a plurality of signal flow paths from the common bus to the gating circuitry to cause the gating circuitry to produce the output command signal during a selected one of the time slots.
"U.S. Pat. No. 6,039,543 teaches a pump shut off system for shutting off a pump when there is insufficient fluid to pump. A processor is electrically connected to a timer to deactivate the pump after a predetermined period of time. The processor also includes a flow sensor to deactivate the timer to prevent the timer from measuring the predetermined amount of time when the flow switch is activated by the flow sensor when the flow sensor detects fluid flow through the outlet conduit above the predetermined amount during the predetermined amount of time.
"US 2004/0000525 relates to a system and method for reducing the energy consumption of a swimming pool cleaning system operating for a first predetermined time period. A programmable controller activates an actuator which causes a diverter valve or in-line valve to isolate and selectively operate a suction vacuum for a second predetermined time period. Isolating and selectively operating the suction vacuum from the skimmer allows the centrifugal pump to be driven by a motor in low speed mode to be used all of the time for skimming and cleaning operations; thereby greatly reducing energy consumption.
"US 2009/0151801 teaches a method of operating a controller for a pool pump motor comprising the steps of setting an operating mode for the pool pump motor, setting a torque value for the pool pump motor corresponding to the operating mode, setting a high operating threshold and a low operating threshold corresponding to the torque value, operating the pool pump motor in a constant torque mode using the torque value, monitoring an operating parameter of the pool pump motor corresponding to a load on the pool pump motor, discontinuing operating the pool pump motor when the operating parameter is higher than the high operating threshold or lower than the low operating threshold and signaling a pool pump motor fault upon the discontinuing operating the pool pump motor.
"US 2009/0211986 relates to a system for load control in an electrical power system including one or more temperature-monitoring devices to control operation of a pool pump. When ambient temperatures are relatively high and electrical power demands from air conditioning systems are relatively high, the temperature-monitoring devices can remove power from the controlled device during the hotter portions of the day and provide power to the controlled devices during the cooler portions of the day. During heat waves or other periods of relatively continuous high heat, the temperature-monitoring devices can schedule power to the controlled devices to reduce overall power demands and to run the controlled devices during the cooler portions of the day when air conditioning electrical loads are reduced. The temperature-monitoring devices can also coordinate operation of the pool pump and a pool heater.
"US 2009/0290990 discloses a pumping apparatus for a jetted-fluid system comprising pump having an inlet coupled to the drain and an outlet coupled to the return. The pump receives fluid from the drain and jet fluid through the return. The apparatus includes a motor coupled to the pump to operate the pump, a sensor configured to generate a signal having a relation to a parameter of the motor, and a switch coupled to the motor and configured to control at least a characteristic of the motor. The apparatus also comprises a microcontroller coupled to the sensor and the switch including a model observer configured to receive a first value based on the signal and to generate a second value representative of at least one of a modeled flow or a modeled pressure based on the first value. The microcontroller is configured to control the motor based on the second value.
"U.S. Pat. No. 4,853,605 shows a load state detecting apparatus of an induction motor having two coils having a drive voltage supplying unit for supplying a drive voltage to the coils in the induction motor, a phase difference detecting unit for detecting a phase difference between the drive voltage supplied across the coils of the induction motor and a current flowing through one of the coils upon application of the drive voltage and for generating a phase difference signal, and a load state detecting unit for comparing the phase difference signal generated by the phase difference detecting unit with a predetermined reference value and generating a signal depending on a load state of the induction motor.
"U.S. Pat. No. 4,439,718 discloses a motor power control of the type which functions by controlling the power factor wherein one of the parameters of power factor current 'on' time is determined by the 'on' time of a triac through which current is supplied to the motor, and wherein, by means of a positive feedback circuit, a wider range of control is effected.
"Additional examples of the prior art are found in U.S. Pat. No. 6,676,837, U.S. Pat. No. 6,806,677 and US 2004/0070357."
As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "The present invention relates to a swimming pool or spa pump control system to selectively control the operation of a recirculating pump in response to at least one of a plurality of operating or environs conditions such as pump run time, solar radiation, water temperature as a function of solar heat energy and water line pressure to optimize water quality in the swimming pool or spa and protect the recirculating pump for damage.
"The control system comprises a controller operatively coupled to the pump motor and a plurality operating status or condition sensors to control the operation of the pump.
"The operation of the pump motor is controlled to protect the recirculating pump from damage possible due to several operating conditions. Specifically, a liquid pressure sensor senses the fluid pressure passing through the debris filter and to generate a pressure signal fed to the controller. If the debris filter becomes clogged, the liquid pressure sensed reaches a minimum predetermined value causing the controller to generate a fault signal sent to the pump motor to deactivate or shut down the pump.
"If the water drawn from the swimming pool through the return conduit reaches a minimum predetermined volume or amount due to a leak or similar condition, a liquid sensor causes the controller to generate a fault signal sent to the pump motor of the pump to deactivate or shut down the pump.
"As previously mentioned, to maximize efficiency and maintain optimal water quality, the run time curve should account for pool water temperature, sunlight or solar radiation, as this has a particularly deleterious effect on water quality in that the chlorine breaks down, environmental debris, type and amount of bacteria and algae, surface leaching, and water chemical composition as major factors.
"Efficiency can generally be optimized when run time curve approximates the solar radiation curve or the air temperature curve which is substantially a function of the date and locale. Thus, the run time should be adjusted periodically with respect to date and time.
"Initially, the swimming pool or spa pump control system is set up by imputting the annual solar radiation or air temperature of the particular locale or the swimming pool or spa.
"The initial operating run time of the pump start-up is calculated for the specific pump rating and calculated solar radiation or air temperature for times and dates to control the operation of the pump.
"Once the swimming pool or spa control system is up and running, the owner/user will observe the water quality over time. Since each pool/spa site will likely vary from the 'standard' site upon which the particular pump is rated, the run time should most likely be adjusted for optimum water quality. This variation is due to trees, screens and other obstructions to the solar radiation impinging the surface of the pool or spa water. Thus, the owner/user will adjust or recalculate the initial operating run time by a factor within a predetermined range.
"The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the invention will be indicated in the claims.
BRIEF DESCRIPTION OF THE DRAWINGS
"For a fuller understanding of the nature and object of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:
"FIG. 1 is a schematic view of the swimming pool or spa recirculating control system of the present invention and a swimming pool including a recirculating system.
"FIG. 2 is a block diagram of the swimming pool or spa recirculating control system of the present invention.
"FIG. 3 is a chart depicting annual radiation impinging the earth's surface for a geographically specific latitude and longitude.
"FIG. 4 is a chart depicting the annual pool water temperature for a geographically specific locale.
"Similar reference characters refer to similar parts throughout the several views of the drawings."
For additional information on this patent application, see: Cantolino, Christopher; Oudshoorn,
Keywords for this news article include: Patents, Electronics, Microcontroller.
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