Back to results
US 7,740,185 B2Granted
Tempering method, control device and tempering device
AssigneeKoenig & Bauer Aktiengesellschaft
InventorKlaus Georg Matthias Müller
Life of this patent
Estimating the term…
Abstract
A method for controlling the temperature of a machine part, by the use of a regulating device, is accomplished by determining one respective value of a measured temperature at each of two separate spaced-apart measured points, which two points are located along a control distance. One of these measured values is fed to each of two control circuits of the regulating device which two control circuits are connected to each other in a cascade-type manner.
Claims23
A method for controlling a temperature of a component of a printing press including the steps of:
- providing said component of a printing press as one of a printing press roll and a printing press cylinder;
- providing a fluid flow path for said printing press component whose temperature is to be controlled, said fluid flow path including a fluid inflow path to a fluid inlet to said printing press component and a fluid return path from a fluid outlet of said printing press component;
- providing a pump in said fluid flow path;
- providing a temperature regulating fluid in said fluid flow path;
- providing said temperature regulating fluid as a liquid;
- providing a feed-in point connected to said temperature regulating fluid in said fluid inflow path;
- providing a temperature control source for said temperature regulating fluid and connecting said temperature control source to said feed-in point;
- locating said feed-in point remote from said fluid inlet to said printing press component whose temperature is to be controlled;
- conducting said temperature regulating fluid to said printing press component along said fluid inflow path from said feed-in point;
- determining a first measured value of a temperature of said temperature regulating fluid at a first temperature measuring point;
- locating said first temperature measuring point in said fluid inflow path remote from said fluid inlet to said printing press component;
- determining a second measured value of said temperature of said temperature regulating fluid at a second temperature measuring point;
- locating said second temperature measuring point in said fluid inflow path adjacent said fluid inlet to said printing press component;
- locating said first temperature measuring point and said second temperature measuring point spaced apart from each other on said fluid inflow path;
- providing a temperature regulating fluid control device;
- providing an actuating member in said fluid flow path adjacent said feed-in point;
- providing a first, inner control loop in said temperature regulating fluid control device;
- providing a second, outer control loop in said temperature regulating fluid control device;
- connecting said first, inner control loop and said second, outer control loop in a cascade-like manner;
- connecting said temperature regulating fluid control device to said actuating member;
- supplying said first measured temperature of said temperature regulating fluid to said inner control loop;
- supplying said second measured temperature of said temperature regulating fluid to said outer control loop;
- providing a pre-regulation unit and supplying a running time constant of a running time of said temperature regulating fluid in said fluid flow path to said outer control loop;
- forming an outer loop corrected command value in said outer control loop using said running time constant and said second measured value of said temperature control fluid at said second temperature measuring point;
- supplying said outer loop corrected command value from said outer control loop to said inner control loop;
- forming an inner loop corrected command value in said inner control loop using said outer loop corrected command value and said first measured value of said temperature control fluid at said first temperature measuring point;
- providing said inner loop corrected command value formed in said temperature regulating fluid control device to said actuating member;
- and
- using said temperature regulating fluid control device for operating said actuating member and controlling said temperature control source for controlling a temperature of said temperature regulating fluid in said fluid flow path.
26 more elements
A device adapted to control the temperature of a component of a printing press comprising:
- one of a printing press roll and a printing press cylinder usable as said component of a printing press and having a fluid inlet and a fluid outlet;
- a fluid flow path for said printing press component whose temperature is to be controlled, said fluid flow path including a fluid inflow path to said fluid inlet, and a fluid return path from said fluid outlet;
- a temperature regulating fluid in said fluid flow path, said temperature regulating fluid being a liquid;
- a temperature control source for said temperature regulating fluid in said fluid flow path and being connected at a feed-in point located remote from and before, in a direction of fluid flow, said fluid inlet in said fluid flow path;
- a first temperature sensor positioned at a first location in said fluid flow path remote from said fluid inlet and intermediate, in said direction of fluid flow, said feed-in point and said fluid inlet, said first temperature sensor adapted to provide a first temperature of said temperature regulating fluid;
- a pump in said fluid flow path, said first temperature sensor being located between said fluid feed-in point and said pump;
- a second temperature sensor positioned at a second location in said fluid flow path adjacent said fluid inlet, said second temperature sensor adapted to provide a second temperature of said temperature regulating fluid, said first and second temperature sensors being spaced apart from each other in said fluid inflow path;
- means conducting said temperature regulating fluid along said fluid flow path in said direction of fluid flow from said fly feed-in point to and through said printing press component;
- a temperature regulating fluid control device;
- an actuating member in said fluid flow path adjacent said feed-in point, said actuating member being responsive to said temperature regulating fluid control device;
- a first, inner control loop in said temperature regulating fluid control device;
- a second, outer control loop in said temperature regulating fluid control device;
- means connecting said first, inner control loop and said second, outer control loop with each other in a cascade-like manner;
- a pre-regulating member in at least said second, outer control loop and adapted to form one of a running time constant and a replacement time constant, said running time constant being representative of a running time of said temperature regulating fluid flow path;
- means to supply said second temperature to said outer control loop and to combine said second temperature with said running time constant to form an outer control loop corrected command value;
- means to supply said outer control loop corrected command value to said inner control loop;
- means to supply said first temperature to said inner control loop, for use with said outer loop corrected command value, to form an inner control loop corrected value in said inner control loop;
- and
- means supplying said inner control loop corrected value from said inner control loop of said temperature regulating fluid control device to said actuating member to operate said actuating member and to control said temperature control source to control a temperature of said temperature regulating fluid in said fluid flow path.
16 more elements
Dependencies are inferred from the claim text.