EP0945686A2 - Dispositif de maintien de pression avec pompe rangée dans la chambre d'eau - Google Patents

Dispositif de maintien de pression avec pompe rangée dans la chambre d'eau Download PDF

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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Withdrawn
Application number
EP99810054A
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German (de)
English (en)
Other versions
EP0945686A3 (fr
Inventor
Helmut Steffan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pneumatex AG
Original Assignee
Stuecklin & Cie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stuecklin & Cie AG filed Critical Stuecklin & Cie AG
Publication of EP0945686A2 publication Critical patent/EP0945686A2/fr
Publication of EP0945686A3 publication Critical patent/EP0945686A3/fr
Withdrawn legal-status Critical Current

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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)
EP99810054A 1998-03-24 1999-01-25 Dispositif de maintien de pression avec pompe rangée dans la chambre d'eau Withdrawn EP0945686A3 (fr)

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 (fr) 1999-09-29
EP0945686A3 EP0945686A3 (fr) 2001-09-12

Family

ID=4193042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810054A Withdrawn EP0945686A3 (fr) 1998-03-24 1999-01-25 Dispositif de maintien de pression avec pompe rangée dans la chambre d'eau

Country Status (1)

Country Link
EP (1) EP0945686A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009131450A2 (fr) * 2008-04-24 2009-10-29 Flamco B.V. Système de chauffage à dispositif d'expansion
WO2011120957A1 (fr) * 2010-03-31 2011-10-06 Flagsol Gmbh Système d'expansion du circuit caloporteur d'une centrale solaire thermique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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 (fr) * 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 (fr) * 1998-02-23 2001-09-12 Stücklin & Cie AG Unité d'extraction de gaz

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"PNEUMATEX-TRANSFERO-SYSTEMS (FIG 1)", STÜCKLIN & CIE AG, FÜLLINSDORF (CH)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009131450A2 (fr) * 2008-04-24 2009-10-29 Flamco B.V. Système de chauffage à dispositif d'expansion
NL1036252C2 (nl) * 2008-04-24 2010-05-31 Flamco Stag Gmbh Verwarmingssysteem met expansie-inrichting.
WO2009131450A3 (fr) * 2008-04-24 2010-11-04 Flamco B.V. Système de chauffage à dispositif d'expansion
WO2011120957A1 (fr) * 2010-03-31 2011-10-06 Flagsol Gmbh Système d'expansion du circuit caloporteur d'une centrale solaire thermique

Also Published As

Publication number Publication date
EP0945686A3 (fr) 2001-09-12

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