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US 2011/0217027 A1Published application
Insert for a flow through heater
AssigneeKoninklijke Philips Electronics N.V.
InventorsBernardo Arnoldus Mulder, Klass Kooijker
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AssigneeKoninklijke Philips Electronics N.V.
InventorsBernardo Arnoldus Mulder, Klass Kooijker
Estimating the term…
When feedback loop control is used for controlling a temperature of liquid at an outlet (5) of a flow through heater, a volume of an ineffective portion (4) of the flow through heater at the outlet (5) constitutes a dead volume which causes a delay in the feedback process. In order to minimize the delay, an insert (6) is applied, which serves for reducing the dead volume by occupying most of this volume. In a practical case, the insert (6) comprises a duct system (12) for conveying liquid from a liquid conveying conduit (2) of the flow through heater to an outlet (10) of the insert (6). Preferably, a volume of such a liquid conveying duct system (12) is relatively small, so that the presence of the duct system (12) in the insert (6) does not spoil the dead volume reducing effect of the application of the insert (6).
Device for heating liquid, comprising:
Method for increasing accuracy in controlling a temperature of liquid at an outlet of a flow through heater (1) having a conduit (2) for conveying liquid and means (3) for heating the liquid while flowing through the conduit (2), wherein at least a substantial portion of space which is present in a portion (4) of the liquid conveying conduit (2) of the flow through heater (1) which is not directly associated with the heating means (3) of the flow through heater (1) is filled up by providing an insert (6) and introducing at least a portion (8) of the insert (6) into the liquid conveying conduit (2) of the flow through heater (1), at an outlet side of the flow through heater (1).
Dependencies are inferred from the claim text.