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Low flow fluid device and pre-piped hydronics

  • US 10,655,875 B2
  • Filed: 11/21/2018
  • Issued: 05/19/2020
  • Est. Priority Date: 07/12/2013
  • Status: Active Grant
First Claim
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1. A variable fluid volume device, comprising:

  • a housing that is determined to have defined housing dimensions; and

    a low fluid flow (LFF) device that measures and controls a flow of a fluid through the housing, wherein the LFF device comprises;

    a damper device that, when closed, prevents the fluid from flowing through the housing and, when open, provides an aperture through which the fluid in the housing flows, wherein the aperture has configurable aperture dimensions that are configured based on a state of the damper device, and wherein the damper device, in a first state, operates as an orifice plate that facilitates measuring the flow based on a flow profile that is determined as a function of the housing dimensions and the configurable aperture dimensions; and

    a controller configured to;

    determine the defined housing dimensions;

    perform a measuring procedure comprising setting the damper device to the first state and measuring the flow based on a pressure measurement and the flow profile that is determined as the function of the housing dimensions and the configurable aperture dimensions; and

    perform a controlling procedure comprising setting the damper device to a second state, different from the first state, that is determined to cause the flow to satisfy a set point.

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