US 2016/0139606 A1 · FLOW-CONTROL VALVE

Abstract

The invention relates to a flow regulating valve (1) for liquid-conducting heating or cooling systems, consisting of a housing (2) with an inlet (3), an outlet (4), and a connecting piece (13) which is arranged between the inlet and outlet and into which a pressure regulating device (14) that keeps the pressure difference between the pressure regions in front of and behind a flow regulating unit (8) arranged in the connecting piece constant and a spindle (7) with an actuating part protruding out of the housing (2) and with a first throttle element (9) located in the housing (2) are inserted, said first throttle element acting on the flow regulating unit or parts thereof. The flow regulating unit (8) consists of a first throttle device, which is made of the first throttle element (9) that is secured to the spindle (7) and a seat (10), and a second throttle device, which is made of a second throttle element (11) that is arranged on the spindle (7) in a movable manner along same and a seat, wherein the second throttle element (11) can be moved in the direction of the first throttle element (9).

Claims26

Dependent claims

In a flow-control valve for liquid-conducting heating or cooling systems and having:

a housing having at least one inlet port, at least one outlet port, and a connection fitting therebetween;
a flow-control assembly in the housing;
a pressure-control assembly in the housing that maintains constant a pressure differential between the input and output pressures upstream of and downstream of the flow-control assembly in the connection fitting;
a spindle with an actuating element projecting out of the housing;
a first valve body in the housing that acts on the flow-control assembly or on parts thereof, the improvement wherein:
the flow-control assembly consists of a first valve subassembly formed from the first valve body attached to the spindle and a seat, and of a second valve subassembly formed from a second valve body on the spindle so as to be displaceable therealong and a seat, the second valve body being displaceable toward and away from the first valve body such that a cross section of a flow passage can be changed by the flow-control valve.

3 more elements

In a flow-control valve for liquid-conducting heating or cooling systems and having:

a housing having at least one inlet port, at least one outlet port;
and a connection fitting therebetween
a flow control assembly in the housing;
a pressure-control assembly in the housing and that maintains constant a pressure differential between the input and output pressures upstream of and downstream of the flow-control assembly in the connection fitting;
a spindle with actuating element projecting out of the housing;
and
first valve body in the housing that acts on the flow-control assembly or on parts thereof, the improvement comprising:
a valve core that can be or is inserted into the connection fitting;
a diaphragm-controlled pressure-control assembly integrated into the core and that surrounds the spindle coaxially and can be displaced on same to maintain constant a pressure differential between the input and output pressures upstream of and downstream of the flow-control assembly integrated into the valve core formed by the valve seat and the valve body, the spindle being integrated into the valve core and having an actuating element projecting out of the housing and out of the valve core and the valve body attached thereto, and presetting of the flow-control assembly is done by adjustable stroke limiters of the valve body.

6 more elements

In a flow-control valve for liquid-conducting heating or cooling systems and comprising:

a housing having at least one inlet port, at least one outlet port, and a connection fitting therebetween;
a flow-control assembly in the housing;
a pressure-control assembly in the housing to maintain constant a pressure differential between the input and output pressures upstream of and downstream of the flow-control assembly in the connection fitting;
a spindle in the housing with actuating element projecting out of the housing;
and
a first valve body in the housing that acts on the flow-control assembly or on parts thereof,
the improvement comprising
a valve core that can be or is inserted into the connection fitting;
a diaphragm-controlled pressure-control assembly integrated that is in the core, surrounds the spindle coaxially, and can be displaced on same to maintains constant a pressure differential between the input and output pressures upstream of and downstream of the flow-control assembly integrated into the valve core formed by the valve seat and the valve body, the spindle integrated into the valve core having an actuating element projecting out of the housing and out of the valve core and the valve body attached thereto;
a set-point spring of the pressure-control assembly on the face of the diaphragm turned away from the flow passage or gap and on the face turned toward the actuating element of the spindle;
and
a valve spring engaged coaxially around the set-point spring.

9 more elements

Dependencies are inferred from the claim text.

Flow-control valve

Life of this patent

Flow-control valve

Life of this patent

Abstract

Claims26