Abstract:
A control arrangement for the temperature of the water drawn from a water pipe (5) contains a heat exchanger (3) lying with its primary side in series with a flow-adjusting valve (4) in a heated water circuit (2), and with its secondary side in the water pipe (5), a temperature sensor (6) lying in the water pipe (5) downstream of the heat exchanger (3), which temperature sensor converts the measured temperature into a pressure acting on a closure member of the flow-adjusting valve (4) against the force of a spring bearing against the housing (16) of the flow-adjusting valve (4), and a measuring orifice (7) in the water pipe (5). The flow-adjusting valve (4) contains a diaphragm between two chambers (10, 11), of which one (10) is connected to the high pressure side of the measuring orifice (7) and the other (11) is connected to the low pressure side of the measuring orifice (7). The deflection of the diaphragm (9) caused by the differential pressure at the measuring orifice (7) acts against the pressure of the temperature sensor (6) on the closure member of the flow-adjusting valve (4). To provide an energy-saving control arrangement, the diaphragm is rigidly connected to the closure member of the flow-adjusting valve (4) in the closing direction thereof, and its deflection in the opening direction of the flow-adjusting valve (4) is continually correlated with the pressure difference at the measuring orifice (7) and the difference between the spring force and the pressure force of the temperature sensor.
Abstract:
A combined control and regulating valve (1) having a housing (2) with an inlet (3) and an outlet (4) as well as a partition (5) between said inlet and outlet and having a seat (6) designed for an interaction with a main valve body (7), which is adjustable from outside. Said inlet and said outlet are connected to one measuring nipple each (31-39 and 41-49 respectively) for the measurement and the control of temperature and/or pressure. One of the measuring nipples (41-49) is designed as a multiple function nipple (50) having a cutt-off-function designed to interact with a seat (53) in a passage (40), which receives said nipple. In a housing neck (55), which encloses said nipple, are access openings (56) disposed, through which e.g. water can be discharged or filled, when said nipple is in its outer screwing position. Said neck is enclosed by a completely closed casing (57) or a casing (57') having a connection (60), which casing is retained by means of a nut (66) screwable on said neck, said nut having an opening (67), through which the outer end of said measuring nipple projects, at which end the nipple is provided with an inner insertion and control opening (38) as well as a cover (37), which covers said opening.
Abstract:
A heat exchanger valve arrangement has a pressure control valve (17), said pressure control valve (17) comprising a valve element (18) cooperating with a throttling element (19) and controlling a differential pressure (P2-P3). The invention provides means with which pumping energy in a heating system can be kept low. To this end detecting means (28, 29) are provided detecting whether said differential pressure (P2-P3) exceeds a predetermined minimum value.
Abstract:
The invention relates to a method for automatic hydraulic compensation of heating and/or cooling systems (1) having a heat and/or cold producer (2), a plurality of loads (4) connected in strands, and a circulating pump (5), wherein control valves (8) provided with actuating drives (7) are installed in the pipeline strands (6) in order to control the strand differential pressures, wherein in a first method step the differential pressures of the inlet side (10) and outlet side (11) of the control valves (8) are detected and subsequently the strand differential pressures between the feed line (12) and the return line (13) are detected by one differential pressure sensor (9) per pipeline strand (6) and the detected measured data are read into a computing unit (14) and are stored in said computing unit, and in a second method step the strand differential pressures in all pipeline strands (6) are continuously measured, the measured data are transferred to the computing unit (14) and compared with the stored data pattern, wherein actuating commands are generated from the determined comparison data by the computing unit (14). The current strand differential pressures are controlled to the stored target differential pressures by the actuating drives (7) of the control valves (8) by means of said actuating commands.
Abstract:
The invention relates to a method for automatic hydraulic compensation of heating and/or cooling systems (1) having a heat and/or cold producer (2), a plurality of loads (4) connected in strands, and a circulating pump (5), wherein control valves (8) provided with actuating drives (7) are installed in the pipeline strands (6) in order to control the strand differential pressures, wherein in a first method step the differential pressures of the inlet side (10) and outlet side (11) of the control valves (8) are detected and subsequently the strand differential pressures between the feed line (12) and the return line (13) are detected by one differential pressure sensor (9) per pipeline strand (6) and the detected measured data are read into a computing unit (14) and are stored in said computing unit, and in a second method step the strand differential pressures in all pipeline strands (6) are continuously measured, the measured data are transferred to the computing unit (14) and compared with the stored data pattern, wherein actuating commands are generated from the determined comparison data by the computing unit (14). The current strand differential pressures are controlled to the stored target differential pressures by the actuating drives (7) of the control valves (8) by means of said actuating commands.
Abstract:
Die Erfindung betrifft ein Verfahren zum automatischen hydraulischen Abgleich von Heizungs- und/oder Kühlanlagen (1) mit einem Wärme- und/oder Kälteerzeuger (2), mehreren strangweise verbundenen Verbrauchern (4) sowie mit einer Umwälzpumpe (5), wobei in den Rohrleitungssträngen (6) zur Regelung der Strangdifferenzdrücke mit Stellantrieben (7) versehene Regelarmaturen (8) installiert sind, wobei in einem ersten Verfahrensschritt von jeweils einem Differenzdruckaufnehmer (9) pro Rohrleitungsstrang (6) die Differenzdrücke von Eingangs- (10) und Ausgangsseite (11) der Regelarmaturen (8) und anschließend die Strangdifferenzdrücke zwischen Vor- (12) und Rücklaufleitungen (13) erfasst und die erfassten Messdaten in eine Recheneinheit (14) eingelesen und in dieser abgespeichert werden, dass in einem zweiten Verfahrensschritt kontinuierlich die Strangdifferenzdrücke in allen Rohrleitungssträngen (6) gemessen werden, die Messdaten an die Recheneinheit (14) übertragen werden und mit dem abgespeicherten Datenmuster verglichen werden, wobei aus den ermittelten Vergleichsdaten von der Recheneinheit (14) Stellbefehle generiert werden, mittels derer durch die Stellantriebe (7) der Regelarmaturen (8) die aktuellen Strangdifferenzdrücke auf die abgespeicherten Solldifferenzdrücke geregelt werden.
Abstract:
An automatic balancing valve is disclosed which is equipped with choking means that can be operated manually with a ring nut placed below the actuating member of the shutter and aligned axially therewith. Advantageously, the dimensions of the ring nut are larger in plan view compared to the plan view dimensions of the actuating member so as to allow its rotation without removing the actuating member.
Abstract:
An on demand tankless water heater system that is capable of quickly delivering water within a desired temperature range. The tankless water heater provides a hybrid heating method that contains a primary heating system and a secondary heating system disposed in a buffer tank that cooperate to facilitate control of output water temperature during water usage. A pressure differential switch detects low flow demand and allows the secondary heating system to provide immediate heating to the water. This secondary heating system provides a faster temperature response and fine tuning of output water temperature.
Abstract:
Device for regulation the flow in a heating and cooling system and where the flow is controlled by a complete valve realized as a combination of a difference pressure valve (5) and a flow controlling valve (6) where the complete valve construction allows for a flushing through of the tube system where the valve is mounted, and that the different pressure levels P1 in the inlet (2), P2 in the intermediate chamber (4) and P3 in the outlet (3) are measured in the measuring nipples (27a and 27b), and that the difference pressure between P2 and P3 is adjustable during operation.
Abstract:
Instalación de energía solar térmica que comprende un primer circuito (20) a través del cual circula un fluido caloportador que comprende al menos una placa solar (9) que capta la radiación solar y la transmite al fluido caloportador, un depósito (1) comunicado con la placa solar (9) a través de un conducto de entrada (10) y un conducto de retorno (12), unos medios de impulsión (3) del fluido caloportador desde el depósito (1) hacia las placas solares (9), un segundo circuito (21) a través del cual circula agua, y un intercambiador (11) en donde el fluido caloportador del primer circuito (20) cede el calor al agua del segundo circuito (21). El primer circuito (20) comprende unos medios de evacuación (24) del aire contenido en el depósito (1), comprendiendo el depósito (1) una placa (2) divisoria dispuesta en su interior que impide que el fluido caloportador saliente del depósito incluya aire.