Belimo Holding Ag

Reto Hobi

Peter Schmidlin

Urs Keller

Norbert Lederle

Marc Thuillard

Philip Holoch

Urs Zambonin

The invention relates to an electronic flow controller () for applications in the HVAC field, said electronic flow controller comprising a one-piece valve body () which is penetrated by a flowing medium. The valve body is divided into a valve portion () and a flow measurement portion () along the flow direction, wherein a valve element () is arranged in the valve section () for the control of flow, wherein said valve element can be controlled from the outside via a valve spindle (), and wherein a measurement path () is formed in the flow measurement portion () for determining the flow rate by means of ultrasound. In order to achieve a compact arrangement and a greatly simplified assembly, accesses () for coupling and/or outcoupling ultrasound into or from the measuring path () are formed on the valve body () in the region of the flow measurement portion (). A control unit () is placed on the valve body (), which comprises first means () for actuating the valve element (), said first means being in engagement with the valve spindle (), and second means () for emitting and/or receiving ultrasound signals which are acoustically coupled to the accesses () for coupling and/or outcoupling ultrasound.

Electronic flow controller

To balance (S) a group of consumers in a fluid transport system in which each consumer is provided with a motorized control valve for regulating the flow through the consumer, characteristic data for the consumers is stored (S) which determines a valve position of the relevant control valve for target flows through one of the consumers in each case. A current total flow through the group of consumers is determined by means of a common flow sensor (S) and a balance factor (S) is defined on the basis of the current total flow and a sum of the desired target flows through the consumers. The consumers are dynamically balanced by setting (S) the valve settings for the corresponding control valves on the basis of the characteristic data and the balance factor.

Method and devices for balancing a group of consumers in a fluid transport system

For the purpose of balancing (S) a group of consumers in a fluid transport system in which each consumer is configured with a motorized regulating valve for the purpose of regulating the flow through the consumer, characteristic data for the consumer is saved (S) which determines a valve position of the corresponding regulating valve for the target throughput through each consumer. A momentary total throughput through the group of consumers is determined (S) by means of a common throughput sensor, and based on the momentary total throughput and a sum of the desired target throughputs through the consumers, a balancing factor is determined (S). By setting (S) the valve positions of the corresponding regulating valves based on the characteristic data and the balancing factor, a dynamic balancing of the consumers is carried out.

Method and devices for equalizing a group of consumers in a fluid transport system

A two-way ball valve () for liquid and/or gas flowing media, essentially comprises a valve fitting () made up of two connected housing parts (), in which a ball () with a drilling () for the media flow and an operating shaft () running perpendicular to the drilling () is mounted such as to be able to rotate. Furthermore, sealing shells () are arranged to both sides of the ball () respectively, coaxial to the longitudinal axis (L) of the valve fitting (), which enclose the ball () and completely fill the dead volume () between the valve fitting () and the ball (). Said sealing half-shells () have a front opening for the operating shaft () in the axial direction (L), corresponding to the cross section of the drilling () in the ball (). The sealing half-shells () only contact the ball () in the region of the front openings thereof, between which a narrow sickle-shaped annular gap is formed. In one embodiment a control diaphragm () is include on the inlet side of the flowing medium ().

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St. Gallenkappel, Switzerland

Reto Hobi