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Control method and controller of flow regulating device

A flow regulating device, the technology of regulating device, applied in the direction of heating method, space heating and ventilation details, lighting and heating equipment, etc., can solve problems such as control oscillation

Active Publication Date: 2019-12-13
DANFOSS AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When such a flow regulating device is operated by an actuating device with significant delay, this can lead to oscillations in control when the load (e.g. a controlled flow rate according to the return temperature of the heating fluid) approaches the limit of the flow regulating device (e.g. This is a major problem when approaching the valve's closed position or close to the valve's fully open position)

Method used

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  • Control method and controller of flow regulating device
  • Control method and controller of flow regulating device
  • Control method and controller of flow regulating device

Examples

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Embodiment Construction

[0022] figure 1 is a schematic diagram of a heating flow circuit 1 (such as a single pipe system) comprising a connection 2 to a heating system 3 (such as a district heating system). The heat transfer fluid is conveyed through the supply line 4 to a plurality of heating lines 5 or risers arranged in parallel along the supply line 4 connecting it to the return line 6 .

[0023] The heating line 5 may be connected to a plurality of separate heat exchange circuits each comprising a heat exchange device 8 such as a radiator etc., wherein each heat exchange circuit may form a heating circuit for a single apartment or just a general domestic location. These circuits including the heat exchange means 8 are arranged in series along the heating lines, the bypass lines ensuring the distribution of the fluid even though one heat exchange means is switched off. The heating line 5 also includes a flow controller 7 downstream of the heat exchange device 8 .

[0024] Sensors, such as a flo...

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PUM

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Abstract

A method of controlling a fluid flow regulating device by means of a control signal varying from 0 to 100% during normal operating load defined as being within a given load threshold, wherein when The control signal is 0% when the fluid flow regulating device is about to close and 100% when the fluid flow regulating device is about to open, but when the load is outside the load threshold , the control enters a modified control in which the control signal is either never 0% and / or never 100%. A controller including the control method.

Description

technical field [0001] The present invention relates to a method of controlling a flow regulating device such as a valve for a heating system when the load becomes low and / or high, and to a controller for carrying out the method. Background technique [0002] When such a flow regulating device is operated by an actuating device with significant delay, this can lead to oscillations in control when the load (e.g. a controlled flow rate according to the return temperature of the heating fluid) approaches the limit of the flow regulating device (e.g. This is a major problem when approaching the closed position of the valve or the valve opening approaching the fully open position of the valve). [0003] Therefore, the object of the present invention is to introduce a method and a controller which solve these problems. Contents of the invention [0004] Accordingly, the present invention introduces a method of controlling a fluid flow regulating device by means of a control sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D19/10
CPCF24D19/10F24D19/1018
Inventor 肖恩·伯顿迈克尔·哈特曼马里乌什·杰德热哲斯基马特加兹·欧索尼克
Owner DANFOSS AS