EP2476962A1 - Ausdehnungsgefäß für Warmwasserbereiter - Google Patents
Ausdehnungsgefäß für Warmwasserbereiter Download PDFInfo
- Publication number
- EP2476962A1 EP2476962A1 EP11306782A EP11306782A EP2476962A1 EP 2476962 A1 EP2476962 A1 EP 2476962A1 EP 11306782 A EP11306782 A EP 11306782A EP 11306782 A EP11306782 A EP 11306782A EP 2476962 A1 EP2476962 A1 EP 2476962A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flexible chamber
- tank
- water heater
- chamber
- flexible
- 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- Withdrawn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
- 238000010438 heat treatment Methods 0.000 title description 4
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 7
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 5
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 230000000694 effects Effects 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract 1
- 239000000806 elastomer Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polyéthylène Polymers 0.000 description 1
- 230000000717 retained effect 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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
- F15B1/265—Supply reservoir or sump assemblies with pressurised main reservoir
Definitions
- the invention relates to a device for compensating for expansion.
- the invention is particularly useful in its application to a hot water tank or a water heater tank.
- the increase in the volume of heated water requires the establishment of a safety group to allow the escape of water and protect the tank or hot water tank from excessive stresses due to the increase or the rapid drop in internal pressure.
- An object of the invention is to propose an improvement of the known technique, by eliminating the expansion tanks of the prior art, while avoiding a discharge of water to the sewer during the heating up of the water contained in the tank or balloon.
- the invention relates to an expansion compensation device, particularly for a water heater tank, comprising a flexible chamber contained in the water heater tank, said flexible chamber being filled with a gas and inflated to a predetermined pressure, so as to absorb the volume expansion of a hot liquid surrounding said flexible chamber filled with gas under predetermined pressure.
- the flexible chamber may have any shape, for example spherical, cylindrical spherical end, ring-shaped, multi-hole ring, or any other form allowing a flexibility of the chamber surrounded by a hot liquid.
- a tank 1 of water heater contains a flexible chamber 2 of substantially toroidal shape with sections in the form of asymmetric lobes.
- the flexible chamber has an appendix 2a for inflating a predetermined pressure of gas filling the flexible chamber.
- the gas used may be air, nitrogen or any other gas that does not react with the hot liquid contained in the tank or with the material of the flexible chamber 2, and does not entail any risk for the users.
- the gas used may be air or nitrogen.
- the method of use of the device according to the invention comprises a first step of filling the flexible chamber at atmospheric pressure.
- a balloon or flexible chamber 2 is filled with gas at atmospheric pressure under a volume of 30 liters.
- the balloon or flexible chamber 2 is placed in a tank 1 of water heater, which is then filled with water.
- the filling of water at atmospheric pressure makes the volume of the flexible chamber 2 decrease negligibly.
- Pressurizing the tank of the water heater through the admission of the pressure of the network under a pressure of about 3.5 bar absolute causes a decrease in volume of the flask to an apparent volume of 8.5 liters approximately, in the case where the water of the network is at a temperature close to 15 degrees Celsius.
- the heating of the water contained in the tank 1 of the water heater to a temperature of about 65 degrees Celsius produces an increase in pressure to a pressure close to 8 bar absolute, which leads to a decrease of volume of the flexible chamber 2 up to a volume of about 4.5 liters.
- the pressure drop to the pressure of 2.5 bars of the supply network allows the flexible chamber 2 to expand beyond the value of 8.5 liters, because the gas contained in the chamber flexible 2 is at a temperature of 65 degrees Celsius and does not cool instantly when racking.
- the invention makes it possible to obtain a dilatation compensation effect with a relatively small amplitude of volume, while avoiding the rejection of water to the sewer and ensuring a good reliability of the operation of the flexible chamber 2. which is subject to volume variations close to 50%, without significantly exceeding this value.
- the invention thus makes it possible to obtain a safety against the excessive pressurization of the walls of the tank of the water heater, while not increasing the space required by the hot water production installation.
- the low cost of the device according to the invention makes it possible to avoid the high costs of setting up the expansion tank installations of the prior art.
- another device comprises a flexible chamber 2 integrated in a water heater comprising a tank 1 and an insulation la.
- the flexible chamber 2 is substantially toroidal and also comprises a passage 2b allowing the establishment around a pipe 3 for withdrawing hot liquid.
- the flexible chamber 2 may optionally retain the central orifice ensuring a pressure equalization during the introduction of the flexible chamber 2 in the water heater.
- the balloon may be retained by a peripheral flange 4 secured to the tank 1 of the water heater.
- FIG 3 another embodiment of the invention comprises a flexible chamber 2 with an orifice allowing the evacuation of hot water through the central passage 5.
- the flexible chamber 2 is connected to a means 6 for fixing the flexible chamber 2 to the tank 1 of the water heater.
- the means 6 for fixing to the tank 1 of water heater is advantageously a tubular means connected to an external means indicating the pressure of the gas filling the flexible chamber 2.
- the unrepresented pressure indicator means may advantageously be connected to a safety means capable of preventing overheating of the hot water surrounding the flexible chamber 2.
- the suction or adhesion of the flexible chamber 2 against the wall of the tank 1 of water heater can advantageously be provided at least on the surface intended to be placed in contact with the tank 1 of heater water a plurality of reliefs, protuberances or ribs allowing detachment of the flexible chamber 2 and allowing the passage of water between the reliefs, protuberances or ribs along the wall of the tank 1 of the water heater.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Resistance Heating (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1150281A FR2970561A1 (fr) | 2011-01-13 | 2011-01-13 | Dispositif de compensation de dilatation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2476962A1 true EP2476962A1 (de) | 2012-07-18 |
Family
ID=44454790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11306782A Withdrawn EP2476962A1 (de) | 2011-01-13 | 2011-12-27 | Ausdehnungsgefäß für Warmwasserbereiter |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2476962A1 (de) |
| FR (1) | FR2970561A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014009378A1 (de) | 2014-06-23 | 2015-12-24 | Jens Kerkhoff | Druckausgleichsvorrichtung |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3021829A1 (de) * | 1980-06-11 | 1981-12-24 | Manfred 5300 Bonn Schulz | Druckausdehnungsgefaess |
| DE29520889U1 (de) * | 1995-03-22 | 1996-04-18 | Franz Kaldewei GmbH & Co, 59229 Ahlen | Druckausgleichsgefäß |
| DE20313137U1 (de) * | 2003-08-18 | 2003-12-18 | Winkelmann Palsis Motortechnik Gmbh & Co.Kg | Ausdehnungsgefäß |
| EP1582820A2 (de) * | 2004-04-01 | 2005-10-05 | Thermo- Technik-Systeme GmbH | Ausgleichsgefäss für Warmwasserheizkreisläufe |
-
2011
- 2011-01-13 FR FR1150281A patent/FR2970561A1/fr not_active Withdrawn
- 2011-12-27 EP EP11306782A patent/EP2476962A1/de not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3021829A1 (de) * | 1980-06-11 | 1981-12-24 | Manfred 5300 Bonn Schulz | Druckausdehnungsgefaess |
| DE29520889U1 (de) * | 1995-03-22 | 1996-04-18 | Franz Kaldewei GmbH & Co, 59229 Ahlen | Druckausgleichsgefäß |
| DE20313137U1 (de) * | 2003-08-18 | 2003-12-18 | Winkelmann Palsis Motortechnik Gmbh & Co.Kg | Ausdehnungsgefäß |
| EP1582820A2 (de) * | 2004-04-01 | 2005-10-05 | Thermo- Technik-Systeme GmbH | Ausgleichsgefäss für Warmwasserheizkreisläufe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014009378A1 (de) | 2014-06-23 | 2015-12-24 | Jens Kerkhoff | Druckausgleichsvorrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2970561A1 (fr) | 2012-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20130119 |