EP0945686A2 - Druckhaltevorrichtung mit innerhalb einer Flüssigkeitsaufnahmekammer angeordneter Pumpe - Google Patents
Druckhaltevorrichtung mit innerhalb einer Flüssigkeitsaufnahmekammer angeordneter Pumpe Download PDFInfo
- Publication number
- EP0945686A2 EP0945686A2 EP99810054A EP99810054A EP0945686A2 EP 0945686 A2 EP0945686 A2 EP 0945686A2 EP 99810054 A EP99810054 A EP 99810054A EP 99810054 A EP99810054 A EP 99810054A EP 0945686 A2 EP0945686 A2 EP 0945686A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- line
- overflow
- pressure maintaining
- maintaining device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 title description 9
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000012528 membrane Substances 0.000 claims abstract description 5
- 238000007872 degassing Methods 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims 1
- 238000009825 accumulation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000003958 fumigation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
- F24D3/1016—Tanks having a bladder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
Definitions
- the present invention relates to a pressure maintaining device for closed heating or cooling circuits, as in the preamble of independent claim 1 is defined.
- FIG. 1 The scheme of such a known pressure maintaining device, for example a PNEUMATEX Transfero system from Simplylin & Cie AG, Greinsdorf / CH, shows Fig. 1.
- 20 denotes a heating or cooling circuit, 1 ' an expansion vessel with an expandable bladder 2 ' Liquid intake chamber, 3 'a connecting line, through the bladder 2 'connected to the heating or cooling circuit 20 is, 6 'a pump for pumping liquid from the bladder 2 'via the connecting line 3' in the heating or cooling circuit 20, 7 'a check valve and 5 'on an overflow line 4' between the connecting line 3 'and the bladder 2' arranged overflow valve. Also shown are two shut-off valves 21 'and 22' and a filter 23 '.
- the overflow valve 5 ' opens, so that circulating liquid, usually water into which bladder 2 'flows. As soon as the pressure has dropped sufficiently, closes the overflow valve 5 'again. If, on the other hand, the operating pressure falls below a certain tolerance value, as long as the pump 6 'is switched on and thus liquid conveyed by the bladder 2 'into the heating or cooling circuit 20, until the pressure is raised enough.
- the expansion vessel can also have a liquid receiving chamber have delimited by a membrane which is the inside of the expansion tank divided.
- a membrane which is the inside of the expansion tank divided.
- the pressure maintenance devices described have for certain Applications several disadvantages. So their structure is relative expensive because the expansion tank and the remaining components are arranged separately. This also leads to one great piping effort and usually for use separate chassis for expansion tank and pump etc. and thus to a large transport volume. Because the piping are relatively long, they generate considerable resistance and as a result a negative pressure, which occurs when overflowing and suction through the pump to an air pool can lead in them. This can cause noise and conveying problems caused by the pump during suction. Another disadvantage is that some of them depend on the type of pump despite the noise insulation, annoying pumping noises. Also is the commissioning of such pressure maintenance devices relatively complex, because first the liquid absorption chamber a specialist must be vented. Furthermore, they tend during operation for gas accumulation in the liquid receiving chamber.
- Pressure maintenance devices is the invention based on the following task.
- a pressure maintenance device must be created of the type mentioned at the beginning, with less piping more compact and simpler and quieter can be operated as comparable previous pressure maintenance devices.
- the essence of the invention is that in a pressure maintaining device for closed heating or cooling circuits, with an expansion vessel, which is a liquid absorption chamber includes a connection line a heating or cooling circuit can be connected, one Pump for pumping liquid from the liquid receiving chamber into the connection line inside the liquid absorption chamber is arranged.
- the pressure maintaining device comprises further a leading to the liquid receiving chamber Overflow line that branches off from the connecting line or can be connected to the heating or cooling circuit overflow valve arranged on the overflow line and a control device.
- the pump is inside the liquid absorption chamber is arranged, on the one hand, the piping effort kept low and the pressure maintaining device compact be built and on the other hand, the pumping noises the liquid surrounding the pump in the liquid receiving chamber and suppresses the outer wall of the expansion tank.
- the Liquid absorption chamber formed by an expandable bladder while in a second advantageous embodiment the fluid intake chamber in the expansion tank is delimited by a membrane.
- the bladder or membrane also cause pump noise suppression here.
- these can have two or more expansion vessels each with a liquid intake chamber, through one or more connecting lines are connected.
- the liquid receiving chamber one of the expansion vessels with a connection line to the heating or cooling circuit and provided with an internal pump. But if a very large liquid volume flow is required, then advantageously in one or more further expansion vessels internal pumps available to the Heating or cooling circuit are connected. To this Way, a high fluid absorption capacity with the Possibility of a large liquid volume flow combined become.
- the connecting line and the overflow line are advantageous the pressure maintaining device according to the invention from above here in or to the expansion tank, and a possible Connection piece for a connecting line Another expansion tank is at the bottom of the expansion tank arranged. It is thus possible to use the liquid intake chamber relatively easy to degas. Also can a gas accumulation in the connecting line and further Expansion tank are largely avoided.
- a gas collection container arranged, in which the overflow line opens and a passage to the liquid receiving chamber having an opening cross-section that is smaller than the inner cross section of the overflow line, at one located higher than the mouth of the overflow line Location of the gas collection container, especially the highest point of the gas collection container, a degassing valve is arranged.
- the interior the liquid intake chamber quickly and comprehensively be degassed.
- the liquid passes from the heating or cooling circuit in the expansion tank finds a pressure drop and thus, according to Henry's law, degassing instead, with the escaping gas in the gas collection container and if necessary accumulates in the expansion tank at the top.
- the overflow valve is opened, liquid flows into the Gas collection container and jams at the narrow passage. Thereby the accumulated gas is removed from the Ejected gas collection container.
- the overflow valve is normally only opened when if the desired operating pressure in the heating or cooling circuit exceeded by a certain tolerance value becomes. For quick degassing of the pressure maintenance device The overflow valve can be reached during commissioning but initially operated increasingly by the control device become. To maintain the operating pressure then the pump is inevitably put into operation.
- the volume loss resulting from the degassing the pressure maintaining device has to compensate for the circulating fluid preferably a liquid make-up device on.
- the pressure maintaining device shown comprises an expansion vessel 1 with two lids 16 and 17, between which an expandable bladder 2 is arranged for liquid absorption is.
- the bladder 2 is gas-tight with the two lids 16, 17 connected and via a connecting line 3 to a heating or cooling circuit can be connected.
- From the connection line 3 branches outside the expansion tank 1
- Overflow line 4 which is a gas collection container 40 to an opening in the upper lid 16 and thus to Bubble 2 extends.
- a degassing valve 41 closes the Gas collection container 40 upwards.
- On the overflow line 4 an overflow valve 5 is arranged, which is too high Pressure in the connecting line 3 or, controlled by a Control device arranged outside the expansion vessel 1 9, opens.
- the overflow valve 5 can for example be a solenoid valve.
- At the end of the connecting line 3 inside the bladder 2 is a pump 6 for pumping liquid attached by the bladder 2 in the connecting line 3.
- the expansion vessel 1 has in the vicinity of it highest point a degassing and gassing 18 for degassing and fumigation of the space between bladder 2 and the outer wall 19 of the expansion tank 1.
- a connecting piece 8 for a connecting line to one another expansion vessel is attached to the lower cover 17 and communicates with the bladder interior.
- the expansion vessel 1 has three vessel feet, whereby only feet 13 and 14 are visible here.
- a weight measuring device 131 for determination of the liquid level in the bladder 2 integrated.
- Measuring the content of the bladder 2 by weight can do this used to run dry the pump 6 by switching off when falling below a certain weight prevent.
- This first embodiment of an inventive Pressure maintenance device works essentially like that Known pressure maintenance devices described in the introduction: if the desired operating pressure in the heating or Cooling circuit exceeded by a certain tolerance value the overflow valve 5 opens, so that circulating liquid, usually water, into which bladder 2 flows. As soon as the pressure has dropped sufficiently, closes the overflow valve 5 again. If, on the other hand, the operating pressure falls below a certain tolerance value, as long as the pump 6 is switched on and thus liquid from the bladder 2 via the connecting line 3 in the heating or cooling circuit until the pressure increases enough is.
- the second embodiment shown here of an inventive Pressure maintaining device differs from the first embodiment in that on the overflow line 4 between the overflow valve 5 and the bladder 2, a gas collecting container 10 is arranged, which leads to the bladder 2 has a passage 101 with an opening cross section, which is smaller than the inner cross section of the overflow line 4. At the highest point of the gas collection container 10, a degassing valve 12 is arranged. Furthermore is on the connecting line 3 between the bladder 2 and the A check valve 7 branches off the overflow line 4 attached, the liquid from the bladder 2 to the branch, but not in the opposite direction.
- the The interior of the bladder 2 can be degassed quickly and comprehensively, which means there is no manual degassing during commissioning can be. That after the transition of the liquid from the heating or cooling circuit into the expansion tank 1 gas escaping from the liquid due to the pressure drop accumulates in the gas collection container 10 above. Now will that Overflow valve 5 opened, liquid flows into the gas collection container 10 and jams at the narrow passage 101. This causes the accumulated gas to pass through the degassing valve 12 ejected from the gas collection container 10.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
- Fig. 2 -
- eine teilweise geschnittene Ansicht eines ersten Ausführungsbeispiels der erfindungsgemässen Druckhaltevorrichtung und
- Fig. 3 -
- eine teilweise geschnittene Ansicht des oberen Teils eines zweiten Ausführungsbeispiels der erfindungsgemässen Druckhaltevorrichtung;
- In der Anschlussleitung 3 kann ein mit der Steuereinrichtung 9 oder manuell betätigbares Absperrventil angeordnet sein.
- Die Überströmleitung 4 kann anstatt von der Anschlussleitung 3 abzuzweigen direkt an den Heizungs- oder Kühlkreislauf anschliessbar sein.
Claims (10)
- Druckhaltevorrichtung für geschlossene Heizungsoder Kühlkreisläufe, mit einem Ausdehnungsgefäss (1), das eine Flüssigkeitsaufnahmekammer umfasst, die über eine Anschlussleitung (3) an einen Heizungs- oder Kühlkreislauf anschliessbar ist, einem Überströmventil (5), das an einer zur Flüssigkeitsaufnahmekammer führenden Überströmleitung (4) angeordnet ist, wobei die Überströmleitung (4) von der Anschlussleitung (3) abzweigt oder an den Heizungs- oder Kühlkreislauf anschliessbar ist, einer Pumpe (6) zum Pumpen von Flüssigkeit von der Flüssigkeitsaufnahmekammer in die Anschlussleitung (3) und einer Steuereinrichtung (9), dadurch gekennzeichnet, dass die Pumpe (6) innerhalb der Flüssigkeitsaufnahmekammer angeordnet ist.
- Druckhaltevorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Flüssigkeitsaufnahmekammer durch eine dehnbare Blase (2) gebildet ist oder im Ausdehnungsgefäss (1) durch eine Membran abgegrenzt ist.
- Druckhaltevorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an der Anschlussleitung (3) ein Rückschlagventil (7) angeordnet ist, das Flüssigkeit in Richtung der Flüssigkeitsaufnahmekammer, aber nicht in Gegenrichtung, durchfliessen lässt, wobei das Rückschlagventil (7) zwischen der Flüssigkeitsaufnahmekammer und der Abzweigung der Überströmleitung (4) angeordnet ist, wenn die Überströmleitung (4) von der Anschlussleitung (3) abzweigt.
- Druckhaltevorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sie zwei oder mehr Ausdehnungsgefässe mit je einer Flüssigkeitsaufnahmekammer umfasst, die durch eine oder mehrere Verbindungsleitungen miteinander verbunden sind.
- Druckhaltevorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Anschlussleitung (3) und die Überströmleitung (4) von oben her in bzw. an das Ausdehnungsgefäss (1) geführt sind und ein Anschlussstutzen (8) für eine Verbindungsleitung zu einem weiteren Ausdehnungsgefäss unten am Ausdehnungsgefäss (1) angeordnet sein kann.
- Druckhaltevorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass an der Überströmleitung (4) zwischen dem Überströmventil (5) und der Flüssigkeitsaufnahmekammer ein Gassammelbehälter (10) angeordnet ist, in den die Überströmleitung (4) mündet und der zur Flüssigkeitsaufnahmekammer hin einen Durchlass (101) mit einem Öffnungsquerschnitt aufweist, der kleiner ist als der Innenquerschnitt der Überströmleitung (4), wobei an einer sich höher als die Mündungsstelle der Überströmleitung (4) befindenden Stelle des Gassammelbehälters (10), insbesondere der höchsten Stelle des Gassammelbehälters (10), ein Entgasungsventil (12) angeordnet ist.
- Druckhaltevorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Pumpe (6) am flüssigkeitsaufnahmekammerseitigen Ende der Anschlussleitung (3) angeordnet ist.
- Druckhaltevorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Ausdehnungsgefäss (1) mindestens einen Gefässfuss (13, 14) aufweist und in den bzw. einen Gefässfuss (13) eine Gewichtsmesseinrichtung (131) zur Ermittlung des Flüssigkeitsstandes in der Flüssigkeitsaufnahmekammer integriert ist.
- Druckhaltevorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sie eine Schutzeinrichtung zum Verhindern des Trockenlaufens der Pumpe (6) aufweist.
- Druckhaltevorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass sie eine Flüssigkeitsnachspeiseeinrichtung aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH69698 | 1998-03-24 | ||
CH69698 | 1998-03-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0945686A2 true EP0945686A2 (de) | 1999-09-29 |
EP0945686A3 EP0945686A3 (de) | 2001-09-12 |
Family
ID=4193042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99810054A Withdrawn EP0945686A3 (de) | 1998-03-24 | 1999-01-25 | Druckhaltevorrichtung mit innerhalb einer Flüssigkeitsaufnahmekammer angeordneter Pumpe |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0945686A3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009131450A2 (en) * | 2008-04-24 | 2009-10-29 | Flamco B.V. | Heating system with expansion device |
WO2011120957A1 (de) * | 2010-03-31 | 2011-10-06 | Flagsol Gmbh | Ausdehnungssystem des wärmeträgermedium-kreislaufs eines solarthermischen kraftwerks |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3202356A (en) * | 1962-12-28 | 1965-08-24 | Itt | Hot water heating systems having auxiliary pressurizing means |
DE9210413U1 (de) * | 1992-08-04 | 1992-09-24 | Kaiser, Rolf, 7300 Esslingen, De | |
CH689025A5 (de) * | 1993-03-12 | 1998-07-31 | Stuecklin & Cie Ag | Druckhaltevorrichtung fuer geschlossene Heizungs- oder Kuehlkreislaeufe. |
EP0937947A3 (de) * | 1998-02-23 | 2001-09-12 | Stücklin & Cie AG | Gasausscheidungseinheit |
-
1999
- 1999-01-25 EP EP99810054A patent/EP0945686A3/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
"PNEUMATEX-TRANSFERO-SYSTEMS (FIG 1)", STÜCKLIN & CIE AG, FÜLLINSDORF (CH) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009131450A2 (en) * | 2008-04-24 | 2009-10-29 | Flamco B.V. | Heating system with expansion device |
NL1036252C2 (nl) * | 2008-04-24 | 2010-05-31 | Flamco Stag Gmbh | Verwarmingssysteem met expansie-inrichting. |
WO2009131450A3 (en) * | 2008-04-24 | 2010-11-04 | Flamco B.V. | Heating system with expansion device |
WO2011120957A1 (de) * | 2010-03-31 | 2011-10-06 | Flagsol Gmbh | Ausdehnungssystem des wärmeträgermedium-kreislaufs eines solarthermischen kraftwerks |
Also Published As
Publication number | Publication date |
---|---|
EP0945686A3 (de) | 2001-09-12 |
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