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Battery-powered hot water recirculation pump

Inactive Publication Date: 2016-11-17
TACO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a small pump-motor combination powered by batteries that can provide enough pump power to have hot water ready when the hot water tap is opened, even at the farthest point from the building hot water heater. The batteries are rechargeable and can be charged wirelessly from a distance using a charger unit. The water pump is powered by a DC motor powered by batteries. The invention allows for the use of commonly available batteries that are rechargeable using household current.

Problems solved by technology

The prior devices all utilized house current to power relatively inefficient pumps, located either at or near the hot water tank, especially for new house construction, or located at the farthest tap site and pumping between the hot and cold water lines at those locations, for aftermarket installation in older buildings.

Method used

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  • Battery-powered hot water recirculation pump
  • Battery-powered hot water recirculation pump
  • Battery-powered hot water recirculation pump

Examples

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Embodiment Construction

[0019]Referring to FIGS. 2-4, there is shown an example of a battery-powered circulator system of the present invention which comprises an electronically controlled water circulator mechanism, generally indicated by the numeral 25 (powered by a battery 30),coupled between the hot and cold water tap lines 17 and 19, respectively, under, e.g., the sink farthest from the water heater 15. By circulating the hot water to this tap, all intervening taps, including showers, are also made available to substantially instant hot water.

[0020]The circulator system includes an electronic controller unit 7, provided with a digital readout 8, which controls the operation of the battery-powered DC motor pump with respect to turning the pump on or off at specified times, i,e., determining when and how often the hot water is to be circulated. In addition, in another embodiment there can also be provided a thermistor, or temperature sensor, that locks out the controller from starting circulation if the...

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PUM

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Abstract

A relatively small water pump-DC motor combination, powered by batteries, provides sufficient pump power to create the flow between the hot and cold water lines necessary to maintain a substantially immediate hot water response when the hot water tap is opened. The pump is controlled by a thermal sensor signaling the pump to commence operation when the temperature in the hot water line upstream of the hot water tap is less than a predetermined value. Preferably, each of the batteries is rechargeable, most preferably utilizing a wireless system, where the power source is a distance away from the pump battery, to provide additional protection against electrical short circuits in the presence of water. Commonly available batteries of between 10 and 24 Volts can be used.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a battery-powered water pump for providing for the recirculation of hot water so as to provide immediate hot water when a tap is turned on utilizing a minimal sized pump to provide the additional small amount of pressure differential required for this recirculation in a normal single family home with a water heater tank, for example as is typical in the U.S.[0003]2. Description of the Related Art[0004]In many of the dry, or drought-plagued parts of North America, and possibly elsewhere, hot water is often continually circulated within the closed water system of a house or business, in order to have hot water substantially immediately available when a faucet is turned on; this avoids, or at least reduces, the wasting of flowing water while waiting for the hot water to reach a tap in a bathroom or kitchen of a home or office center. By circulating the hot water continuously to the most dis...

Claims

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Application Information

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IPC IPC(8): F04D13/06E03B7/04F04D15/02F04D1/00F04D29/22F04D29/42
CPCF04D13/068F04D29/22F04D29/4293E03B7/045F04D15/0209F04D1/00F04D15/0281Y02A20/411
Inventor PERRONE, CARL A.THOMPSON, STEVEFACEY, TODDWU, DIBIRKENSTOCK, ROBERTSTAKEV, VLADISLAV
Owner TACO