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EP1262720A2 - Dispositif de dégazage pour liquides dans un circuit ouvert ou fermé - Google Patents

Dispositif de dégazage pour liquides dans un circuit ouvert ou fermé Download PDF

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Publication number
EP1262720A2
EP1262720A2 EP02405408A EP02405408A EP1262720A2 EP 1262720 A2 EP1262720 A2 EP 1262720A2 EP 02405408 A EP02405408 A EP 02405408A EP 02405408 A EP02405408 A EP 02405408A EP 1262720 A2 EP1262720 A2 EP 1262720A2
Authority
EP
European Patent Office
Prior art keywords
degassing
float
pressure
container
pump
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.)
Granted
Application number
EP02405408A
Other languages
German (de)
English (en)
Other versions
EP1262720B1 (fr
EP1262720A3 (fr
Inventor
Helmut Friedrich
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1262720A2 publication Critical patent/EP1262720A2/fr
Publication of EP1262720A3 publication Critical patent/EP1262720A3/fr
Application granted granted Critical
Publication of EP1262720B1 publication Critical patent/EP1262720B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24D19/00—Details
    • F24D19/08—Arrangements for drainage, venting or aerating
    • F24D19/082—Arrangements for drainage, venting or aerating for water heating systems
    • F24D19/083—Venting arrangements

Definitions

  • the invention relates to a device for degassing heating or cooling systems, in which water, oil or water with additives to freeze it prevent being used for heat transfer.
  • These systems have dissolved gases, especially ambient air, and these promotes corrosion inside the pipes. To this harmful influence To prevent this, the gases are regularly removed from the circulatory fluid. This is achieved using a pressure level degasser, such as in Heating systems are used.
  • the pressure stage degassing is based on the Principle that - the higher the pressure in a liquid - the more gas in it can be solved. Therefore, by lowering the pressure in the liquid medium degassing can be achieved.
  • EP 0'856'135 B1 describes a method and a device for degassing a liquid in an essentially closed system of a plant known.
  • a circulation pump is used liquid to be degassed from the essentially closed system, by using a shut-off valve in the form of a solenoid valve in a degassing container is sucked in, on the underside of which flows into it and also flows out through a spout in the bottom and afterwards through the circulation pump to the closed system via a check valve is fed again.
  • a cylindrical, standing one and degassing takes place at the top of the dome-shaped container due to the negative pressure built up by the circulation pump.
  • the liquid supply is in with the circulation pump running the degassing tank is interrupted by closing a shut-off valve.
  • the Circulation pump is switched off for a short time at certain time intervals to vent them.
  • the solenoid valve is opened again, the pressure in the Degassing container slightly above atmospheric pressure and this will the gas excreted above the liquid level at reduced pressure upwards via a valve unit at the upper end of the degassing container in the environment pushed out. It is called the rinsing process. After a maximum of 30 The solenoid valve closes again in seconds.
  • This degassing device causes due to its large degassing vessel volume from 8 to 12 liters content not inconsiderable pressure fluctuations in the otherwise closed circuit system of a system, for example a heating system, which are very undesirable.
  • the minimum size of the degassing tank such a system when using an integrated pressure maintenance station is about 4 liters. Because the liquid supply into the degassing vessel is intermittent valves are also required, which sometimes cause pressure surges and cause flow noises in the liquid circuit. If there is a leak Check valve on the breather gas is sucked in again, which leads to wrong Leads gas measurements. In addition, the operation of this device must be ongoing be regulated and controlled, which means that the circulation pump must be switched on and off be switched off and valves must be opened and closed, what all with a corresponding effort in control and Control devices must be accomplished.
  • the check valve will leak, which can easily happen can, as soon as condensate is expelled with the gas, becomes too much Gas measured and the device no longer switches off. According to this system can otherwise only worked with a minimum degassing tank of 2 liters become. Because the quantities in an even smaller degassing container are too small If the gas is excreted, the pressure switch could no longer register this. However, the larger the degassing tank, the larger they are System pressure fluctuations that arise in the vacuum phase. This Fluctuations have to be compensated with additional devices.
  • a device for degassing liquids in a closed or open cycle consisting of one Degassing tank with a supply line and a breather and subsequent Gas line and a circulating pump for extracting medium via a suction port from the lower area of the degassing tank and Feed back into the cycle, and which is characterized by being the only one Supply line from the circuit to the degassing tank consists of one line, that in the upper half of the degassing tank via an injector nozzle in the Interior opens, and the gas pipe in an associated water tank adjacent to the top of a float vertically movably mounted therein empties.
  • FIG. 1 shows the essential elements of the device for its operation.
  • the degassing container 1 has the shape of a lying cylinder, which here seen schematically from the side.
  • a circulation pump 3 is in its drain line 12 installed.
  • the feed line 11 leads from the circuit 13 through a dirt filter 5 and then via an injector 2 into the interior of the Degassing container 1, in its upper half.
  • the gas line 10 is connected to discharge the separated gases. It leads via the vent valve 4 into a water tank 6.
  • a float 14 is arranged with a contact switch 9.
  • the water tank 6 is also equipped with an overflow pipe 15. As a result of evaporation, there is a loss of liquid in the water tank 6, so that water has to be refilled from time to time, which is done manually here has taken place.
  • FIG. 2 shows the practically the same device, but also with an automatic make-up to compensate for water loss in the Water tank 6 due to evaporation.
  • this version with automatic water make-up is the water tank 6 via an additional connecting line 17 with integrated magnet 15 and check valve 16 connected to the degassing tank 1 to which also a manometer 18 is connected.
  • FIG. 3 shows a plan drawing of the device according to the diagram according to Figure 1 seen in a view from the side.
  • the device is on a mounting plate 26 constructed.
  • the circulation pump 3 is via rubber bearing 27 screwed to this mounting plate 26.
  • Your suction port 28 is with the bottom of the cylindrical degassing container 1 connected.
  • Is on top of fitting 21 in supply line 11 a manometer 19 is attached.
  • This fitting 21 includes on the underside replaceable dirt filter 5 a.
  • the pressure line 12 of the circulation pump 3 leads from the pump head 24 back into the circuit 13 of the system.
  • the Pump head 24 is equipped with a pressure adjustment screw 25, so that the delivery pressure of pump 3 is adjustable.
  • a vent 4 is placed, at the upper end of which the gas line 10 is connected
  • Check valve 22 is connected.
  • This gas line 10 leads into the adjacent water tank 6 and there the gas pressure acts from above a float 14. This closes one with a float switch 9 Contact or interrupt depending on the.
  • the level in this water tank 6 fluctuates in operation between the minimum and maximum shown. at Water should be refilled below the minimum, which is done manually here has to be done.
  • the device is equipped with a control unit 23, which processes the signals of the contact switch 9 and accordingly the Pump 3 controls. In a particularly advantageous embodiment as shown in FIG. 2 water has been added, water is added automatically. This too Functions are then monitored and controlled by the control unit 23. On the other hand, if the level exceeds the maximum, then flows excess water through the overflow pipe 15 to the outside.
  • FIG. 4 shows a view of the degassing container 1 of the device 3, but in the position of the device shown in this figure 3 seen from the left. You can see the cylindrical degassing tank 1 from the side in a longitudinal section, so that the view inside is released.
  • the peculiarity of the whole degassing device is that the Degassing can be carried out with such a compact degassing container 1, which as shown here is only 72mm in inner diameter and 190mm in length measures and has a content of only about 0.5 to 0.7 liters.
  • the shape and arrangement of the injector 2, and the placement of the Vent 4 of great importance.
  • the intake port 28 to the pump 3 is located exactly under the injection nozzle 2. This is so large that there is always plenty of water for it Pump 3 arrives, whereby dry-running protection is implemented.
  • the suction line 11 opens into the upper one via the injector nozzle 2 Half of the interior of the degassing tank 1.
  • the liquid medium injected as shown and its jet hits the opposite end 30 of the degassing container 1.
  • the deaerator is above the degassing container 1 4 arranged, from which the gas line 10 via a non-return valve in Form of a check valve 22 leads into the water tank 1.
  • FIG 5 is the detailed structure of the float 14 in the water tank 6 shown.
  • This part of the degassing unit takes over the function of Monitoring and registration of the gases expelled under pressure. Furthermore he monitors the water level in the water or make-up tank 6.
  • the for this purpose float 14 is on an inflow tube 31 for the gas to be inflated can be moved vertically with an anti-rotation pin 32 arranged parallel to it guided.
  • the inflow pipe 31 and the anti-rotation bolt 32 are in one Holding plate 33 attached, which is mounted inside the water tank 6.
  • Reed switch 34 is also attached to the holding plate 33 and acts with one Permanent magnet 35 together on the top of the float 14th is mounted.
  • the gas-carrying inflow pipe 31 of the gas line 10 from the breather to Float switch is dimensioned so small, in the order of approx. 2.0mm diameter that the gases into the at a high speed Bottom bore 38 of the float 14 and this even with very small Push the gas quantities down.
  • the float 14 will flow out approx. 1mm or more moved downwards, the reed switch registers this 34 and forwards its signal to a control unit 23, which it further processed.
  • the second function of the float 14 is as follows: if the Float 14 no longer so far due to lack of water in the water tank 6 can rise to close the contact in the reed switch 34, is a Alarm condition caused. The one that is open when a make-up is due Solenoid valve is closed.
  • the pump 3 with integrated pressure control promotes water from the Degassing container 1, which creates a negative pressure in this.
  • the water in the suction line 11 begins to flow the injection nozzle 2 into the degassing container 1. That through the Water flowing in after nozzle 2 reaches a high level as a result of nozzle 2 Speed and a beam effect is created.
  • Bernoulli's Flow law thus arises in the jet and also above the nozzle 2 stronger negative pressure that very quickly the vent 4 of any therein emptied existing water.
  • the degassing container 1 Because more water comes out due to the pump performance the degassing container 1 is drawn off as water through the injection nozzle 2 flows in, creates a negative pressure in the degassing container 1 anyway Regulation on the pressure adjusting screw 25 on the pump head 24 becomes a uniform flow in the negative pressure of the water to be degassed achieved.
  • the short overall length of the degassing container 1 causes the water jet collides with the inside of the end face 30, causing a strong swirl which creates water particles.
  • the effect of the nozzle 2 to wear about which not yet degassed water is injected. Due to the impact on the end face 30 the water particles are atomized, taking the gases out of the water be eliminated.
  • This entire package of measures and effects increases the performance of the degassing and enables operation with a very small degassing tank 1 with a content of less than one as shown Liter. Even with this small degassing container 1 can be up to 5 minutes without Interrupt be degassed. Then the circulation pump 3 for 11 ⁇ 2 minutes turned off to expel the released gas through the vent 4. The The nature of the circulation pump 3 leaves only a minimal backflow of Water too. This reflux is sufficient to remove any gases that are present have collected in the pump head 24, climb back into the degassing container 1 allow. However, the majority of the liquid flows after the Circulation pump 3 via the injection nozzle 2 into the degassing container 1 after what again causes an increase in pressure inside.
  • the water supply prevents the float 14 and the mouth of the gas line 10 sucking air in the degassing tank 1, which would otherwise cause an incorrect gas measurement, if the check valve 22 leaks.
  • the buoyancy of the float 14 is dependent on the height of the water level in the container 6, and this Buoyancy is used to determine the switch-off of the device. Sinks the level is far below, the buoyancy is reduced and even a small gas flow is off the gas line 10 is able to push the float 14 down and the Interrupt contact switch 9.
  • the float 14 always remains complete submerged in water.
  • a connecting line 17 with integrated solenoid valve 15 and a check valve 16 present between the water tank 6 and the degassing tank 1.
  • a refill valve 7 with float 36 is installed in the container 6, through which cold water flows in via line 8 from the mains line if required can. Thanks to the automatic water make-up, it is always the same Ensures water level in container 6, which ensures that the buoyancy the float 14 is always the same.
  • the refill valve float 36 7 itself also has the additional function of monitoring the water level. If for any reason the water level drops below the minimum, will the make-up process and the degassing are interrupted. The same surveillance the device has no make-up when the water level falls below the minimum, for example due to evaporation.

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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)
  • Degasification And Air Bubble Elimination (AREA)
  • Physical Water Treatments (AREA)
EP02405408A 2001-06-01 2002-05-23 Dispositif de dégazage pour liquides dans un circuit ouvert ou fermé Expired - Lifetime EP1262720B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH10112001 2001-06-01
CH10112001 2001-06-01

Publications (3)

Publication Number Publication Date
EP1262720A2 true EP1262720A2 (fr) 2002-12-04
EP1262720A3 EP1262720A3 (fr) 2004-04-28
EP1262720B1 EP1262720B1 (fr) 2005-01-26

Family

ID=4552486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02405408A Expired - Lifetime EP1262720B1 (fr) 2001-06-01 2002-05-23 Dispositif de dégazage pour liquides dans un circuit ouvert ou fermé

Country Status (3)

Country Link
EP (1) EP1262720B1 (fr)
AT (1) ATE288054T1 (fr)
DE (1) DE50202093D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007071613A1 (fr) * 2005-12-20 2007-06-28 Tecan Trading Ag Dispositif de conditionnement pour liquides d'un systeme de manutention de liquides
WO2018004347A1 (fr) * 2016-07-01 2018-01-04 Spiro Enterprises B.V. Séparateur de gaz

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH709041A2 (de) 2013-12-16 2015-06-30 Disgas Gmbh Verfahren und Vorrichtung zur Entgasung eines Mediums in einem Kreislauf.
EP3275524A1 (fr) * 2016-07-29 2018-01-31 Siemens Aktiengesellschaft Dispositif de degazage a depression pour un liquide et son procede de fonctionnement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856135B1 (fr) 1995-10-16 2000-01-12 Stücklin & Cie AG Procede et dispositif de degazage d'un liquide contenu dans un systeme sensiblement ferme

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE262365T1 (de) * 1998-01-28 2004-04-15 Reflex Winkelmann Gmbh & Co Kg Vorrichtung zum entgasen von flüssigen medien
EP1102012B1 (fr) * 1999-11-17 2006-08-30 Anton Eder Installation de dégazage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856135B1 (fr) 1995-10-16 2000-01-12 Stücklin & Cie AG Procede et dispositif de degazage d'un liquide contenu dans un systeme sensiblement ferme

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007071613A1 (fr) * 2005-12-20 2007-06-28 Tecan Trading Ag Dispositif de conditionnement pour liquides d'un systeme de manutention de liquides
WO2018004347A1 (fr) * 2016-07-01 2018-01-04 Spiro Enterprises B.V. Séparateur de gaz
NL2017087A (en) * 2016-07-01 2018-01-09 Spiro Entpr Bv Gas separator
US11112127B2 (en) 2016-07-01 2021-09-07 Spiro Enterprises B.V. Gas separator

Also Published As

Publication number Publication date
DE50202093D1 (de) 2005-03-03
ATE288054T1 (de) 2005-02-15
EP1262720B1 (fr) 2005-01-26
EP1262720A3 (fr) 2004-04-28

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