Apparatus for flow detection, measurement and control and method for use of same
First Claim
1. A flow sensor having an inlet and an outlet for fluid flow, the sensor comprising:
- a. a moving plate means for moving in response to fluid flow through the sensor;
b. a sensor means for sensing the movement of the moving plate and creating a signal related to its location;
c. a biasing means for biasing the moving plate towards the inlet; and
d. a sealing means for preventing flow through the sensor until a specified differential pressure across the sensor is reached, whereby, increasing flow displaces the moving plate over a distance proportional to the pressure exerted thereon until it is displaced a sufficient distance to allow flow therethrough.
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Accused Products
Abstract
A flow sensor having an inlet and an outlet comprising: a plate moving in response to fluid flow therethrough, being displaced further as flow increases; a sensor for determining moving plate'"'"'s position and creating an electronic signal related thereto; a biasing means for biasing the plate towards the sensor'"'"'s inlet end. The sensor may include a sealing means for preventing flow therethrough until a specified differential pressure is reached allowing the device to be used as a bypass mechanism. The sealing means may also constitute a check valve means to prevent flow in an undesired direction. The check means comprises: a bullet rod adapted to be received within an orifice defined in a moving plate, such that the bullet rod prevents flow through the orifice until the moving plate is displaced past a terminal end of the bullet rod; and a plate means sealingly and slidingly received within a cylinder, which is closed for a portion of its length and open for another portion of its length, such that flow is prevented until the plate is displaced past the closed portion of the cylinder. The method using the sensor in multipurpose piping systems includes use of the apparatus in a system incorporating at least one fire sprinkler, the piping system also preferably providing at least one other use in the structure. The other use in the structure may be supplying domestic needs, or supplying heating/cooling water for a heating/air conditioning system.
48 Citations
16 Claims
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1. A flow sensor having an inlet and an outlet for fluid flow, the sensor comprising:
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a. a moving plate means for moving in response to fluid flow through the sensor;
b. a sensor means for sensing the movement of the moving plate and creating a signal related to its location;
c. a biasing means for biasing the moving plate towards the inlet; and
d. a sealing means for preventing flow through the sensor until a specified differential pressure across the sensor is reached, whereby, increasing flow displaces the moving plate over a distance proportional to the pressure exerted thereon until it is displaced a sufficient distance to allow flow therethrough. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification