EP3805671A1 - Absorption of combustible coolant - Google Patents
Absorption of combustible coolant Download PDFInfo
- Publication number
- EP3805671A1 EP3805671A1 EP20195255.3A EP20195255A EP3805671A1 EP 3805671 A1 EP3805671 A1 EP 3805671A1 EP 20195255 A EP20195255 A EP 20195255A EP 3805671 A1 EP3805671 A1 EP 3805671A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- absorption liquid
- counterclockwise
- flammable
- signal
- housing
- 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
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 29
- 239000002826 coolant Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005057 refrigeration Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000003380 propellant Substances 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- KJIOQYGWTQBHNH-UHFFFAOYSA-N undecanol Chemical compound CCCCCCCCCCCO KJIOQYGWTQBHNH-UHFFFAOYSA-N 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 150000001722 carbon compounds Chemical class 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 10
- 239000002775 capsule Substances 0.000 description 8
- 239000001294 propane Substances 0.000 description 5
- 150000001335 aliphatic alkanes Chemical class 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
Definitions
- the invention relates to the suppression of inflammable and poisonous gases in a device in which a counterclockwise cooling process takes place, for example a heat pump.
- flammable refrigerants are used in heat pumps and in cooling and freezing systems, which have the advantage that if they are accidentally released, they do not damage the climate or the ozone layer.
- due to their flammability, such accidental release should be avoided as far as possible.
- Suitable absorption liquids are long-chain alcohols such as nonanol, decanol and undecanol; they are particularly suitable for absorbing propane.
- the object of the invention is therefore to provide a method and a device for binding working fluids that accidentally escape so that they cannot ignite.
- the absorption liquid is a long-chain carbon compound, preferably these are the liquids nonanol, decanol, undecanol or mixtures thereof.
- the triggering signal follows a concentration measurement, a triggering signal being given when the working fluid-air concentration reaches 40 percent of the ignition limit.
- the stop signal is given when 10 percent or 5 percent of the corresponding ignition limit is reached.
- the trigger signal and the stop signal can also occur several times in succession.
- the draining absorption liquid is collected in a separate container after it has been collected and fed to a reprocessing.
- carbon dioxide or nitrogen are used as the propellant gas in the pressure vessel. This has the advantage that when the tank no longer contains any absorbent because it has been used up, the room is still rendered inert.
- the collecting trough is provided with a vent which opens into a lockable and removable container.
- nozzles fed via a header can also be used. These nozzles can be oriented vertically or horizontally, whereby the orientation can be directed to known risk areas in the refrigeration circuit.
- Fig. 1 shows a heat pump 1 with a refrigeration circuit 2 which is operated in a capsule housing 3.
- a pressure vessel 4 is arranged above the capsule housing 3; the pressure vessel can also be arranged at any other easily accessible location in the heat pump 1.
- the pressure vessel contains a mixture of nonanol, decanol and undecanol as absorption liquid and carbon dioxide as propellant gas.
- the pressure vessel 4 is connected to the automatic valve 5 via a pressure line.
- a concentration measurement for gaseous working fluid which in this example is R290, serves as the signal transmitter 6 for the valve 5.
- the concentration is measured inside the capsule housing 3.
- a gas concentration of 40 percent of the ignition limit which is 1.7 percent in air, i.e. 0.68 percent, is measured, the valve 5 opens automatically.
- the absorption liquid is conducted via a pressure line to the atomizer nozzle 7, which is located inside the capsule housing 3, where the absorption liquid is finely atomized.
- the absorption liquid dissolves the propane and runs off into the collecting pan 8. From there it is directed into the collecting container 10 via a secured drain. As soon as the concentration measurement has fallen below 10 percent of the ignition limit, i.e. 0.17 percent propane in air, the injection is stopped.
- this cycle can be repeated until the absorption liquid in the pressure vessel 4 is used up.
- the capsule housing is then rendered inert with the propellant gas, so that ignition is reliably prevented even if the working fluid continues to escape.
- FIG. 4 shows a heat pump 1 with the same structure as in FIG Fig. 1 , but with the difference that instead of a single nozzle, a horizontal row of nozzles 11 is provided in the head area of the capsule housing. This enables the absorption liquid to be distributed more quickly in the capsule housing 3.
- the pressure line behind the valve 5 is connected to a header 12 for this purpose, which distributes the absorption liquid evenly to all nozzles.
- FIG. 4 shows a heat pump 1 with the same structure as in FIG Fig. 2 , but with the difference that in addition to a horizontal row of nozzles, vertical rows of nozzles 13 are also provided, which allow an even better distribution of the absorption liquid.
- the nozzles can be aimed at critical pipe connections or heat exchanger connections where leaks are possible.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Magnetic Heads (AREA)
Abstract
Verfahren und Vorrichtung zur Absorption von entzündlichem Arbeitsfluid im Gehäuse (1, 3) einer Vorrichtung zum Betrieb eines linksdrehenden Kältekreises, wobei auf ein auslösendes Signal hin eine unter hohem Druck befindliche, schlecht brennbare oder unbrennbare Absorptionsflüssigkeit in das Gehäuse (3) eingedüst wird, die Eindüsung solange aufrechterhalten wird, bis ein Signal zum Stoppen der Eindüsung erfolgt, und die ablaufende Absorptionsflüssigkeit aufgefangen wird.Method and device for the absorption of flammable working fluid in the housing (1, 3) of a device for operating a counterclockwise refrigeration circuit, in which, in response to a triggering signal, a poorly flammable or non-flammable absorption liquid under high pressure is injected into the housing (3), which Injection is maintained until there is a signal to stop the injection and the draining absorption liquid is collected.
Description
Die Erfindung betrifft die Niederschlagung entzündlicher und giftiger Gase in einem Gerät, in welchem ein linksdrehender Kälteprozess abläuft, beispielsweise einer Wärmepumpe. So werden inzwischen in Wärmepumpen und in Kühl- und Gefrieranlagen entzündliche Kältemittel verwendet, die den Vorteil haben, bei ihrer versehentlichen Freisetzung weder das Klima noch die Ozonschicht zu schädigen. Eine solche versehentliche Freisetzung ist aufgrund deren Brennbarkeit aber möglichst zu vermeiden.The invention relates to the suppression of inflammable and poisonous gases in a device in which a counterclockwise cooling process takes place, for example a heat pump. In the meantime, flammable refrigerants are used in heat pumps and in cooling and freezing systems, which have the advantage that if they are accidentally released, they do not damage the climate or the ozone layer. However, due to their flammability, such accidental release should be avoided as far as possible.
Dies betrifft vor allem das inzwischen häufig eingesetzte Propan im Kältemittel R290, aber auch Isobutan im Kältemittel R600a, n-Butan in R600, Propylen in R1270 sowie weitere Alkane und Alkene. Solche niederkettigen Alkane und Alkene können mit schlecht brennbaren Stoffen mit langen Kohlenstoffketten absorbiert und gelöst werden. Verwendet man hierfür Flüssigkeiten, die als nicht brennbar oder schwer brennbar eingestuft sind, können diese Flüssigkeiten versprüht werden und das niederkettige Alkan oder Alken wird der Luft entzogen, das Gemisch verliert seine Entzündlichkeit.This applies above all to propane, which is now frequently used in the refrigerant R290, but also isobutane in the refrigerant R600a, n-butane in R600, propylene in R1270 and other alkanes and alkenes. Such low-chain alkanes and alkenes can be absorbed and dissolved with poorly combustible substances with long carbon chains. If you use liquids that are classified as non-flammable or hardly flammable, these liquids can be sprayed and the low-chain alkane or alkene is removed from the air, the mixture loses its flammability.
Geeignete Absorptionsflüssigkeiten sind langkettige Alkohole wie Nonanol, Decanol und Undecanol, sie sind besonders geeignet, um Propan zu absorbieren.Suitable absorption liquids are long-chain alcohols such as nonanol, decanol and undecanol; they are particularly suitable for absorbing propane.
Die Aufgabe der Erfindung ist daher, ein Verfahren und eine Vorrichtung zur Verfügung zu stellen, um versehentlich austretende Arbeitsfluide zu binden, damit sie sich nicht entzünden können.The object of the invention is therefore to provide a method and a device for binding working fluids that accidentally escape so that they cannot ignite.
Die Erfindung löst die Aufgabe durch ein entsprechendes Verfahren zur Absorption von entzündlichem Arbeitsfluid im Gehäuse einer Vorrichtung zum Betrieb eines linksdrehenden Kältekreises, wobei
- auf ein auslösendes Signal hin eine unter hohem Druck befindliche schlecht brennbare oder unbrennbare Absorptionsflüssigkeit in das Gehäuse eingedüst wird,
- die Eindüsung solange aufrechterhalten wird, bis ein Signal zum Stoppen der Eindüsung erfolgt, und
- die ablaufende Absorptionsflüssigkeit aufgefangen wird.
- In response to a triggering signal, a poorly flammable or non-flammable absorption liquid under high pressure is injected into the housing,
- the injection is maintained until a signal is given to stop the injection, and
- the draining absorption liquid is collected.
In Ausgestaltungen des Verfahrens wird vorgesehen, dass die Absorptionsflüssigkeit eine langkettige Kohlenstoffverbindung ist, vorzugsweise sind dies die Flüssigkeiten Nonanol, Decanol, Undecanol oder Mischungen daraus.In embodiments of the method it is provided that the absorption liquid is a long-chain carbon compound, preferably these are the liquids nonanol, decanol, undecanol or mixtures thereof.
In einer weiteren Ausgestaltung des Verfahrens ist vorgesehen, dass das auslösende Signal einer Konzentrationsmessung folgt, wobei beim Erreichen von 40 Prozent der Zündgrenze der Arbeitsfluid-Luft-Konzentration ein Auslösesignal gegeben wird. Das Stoppsignal wird beim Erreichen von 10 Prozent oder 5 Prozent der entsprechenden Zündgrenze gegeben. Auslösesignal und Stoppsignal können auch mehrmals nacheinander erfolgen.In a further embodiment of the method it is provided that the triggering signal follows a concentration measurement, a triggering signal being given when the working fluid-air concentration reaches 40 percent of the ignition limit. The stop signal is given when 10 percent or 5 percent of the corresponding ignition limit is reached. The trigger signal and the stop signal can also occur several times in succession.
In einer weiteren Ausgestaltung ist vorgesehen, dass die ablaufende Absorptionsflüssigkeit nach dem Auffangen in einem separaten Behälter gesammelt und einer Wiederaufbereitung zugeführt wird.In a further embodiment it is provided that the draining absorption liquid is collected in a separate container after it has been collected and fed to a reprocessing.
Die Erfindung löst die Aufgabe auch durch eine Vorrichtung zum Eindüsen von Absorptionsflüssigkeit in das Gehäuse einer Vorrichtung zum Betrieb eines linksdrehenden Kältekreises, aufweisend
- einem Druckbehälter, der eine Absorptionsflüssigkeit enthält und der ein Treibgas enthalten kann,
- der Druckbehälter über eine Druckleitung mit einem automatischen Ventil verbunden ist,
- dieses Ventil mit einem Signalgeber verbunden ist, dessen Signale aus einer Konzentrationsmessung von gasförmigem Arbeitsfluid und einer Recheneinheit oder Analogelektronik zur Bestimmung der Zündgrenze entstammen,
- das Ventil mit einer Druckleitung verbunden ist, die zu mindestens einer Düse führt, die in dem Raum angeordnet ist, in welchem der linksdrehende Kältekreis durchgeführt wird,
- unterhalb des Raumes, in welchem der linksdrehende Kältekreis durchgeführt wird, eine Auffangwanne vorgesehen wird.
- a pressure vessel which contains an absorption liquid and which can contain a propellant gas,
- the pressure vessel is connected to an automatic valve via a pressure line,
- this valve is connected to a signal transmitter, the signals of which originate from a concentration measurement of gaseous working fluid and a computing unit or analog electronics to determine the ignition limit,
- the valve is connected to a pressure line which leads to at least one nozzle which is arranged in the room in which the counterclockwise cooling circuit is carried out,
- A drip pan is provided below the room in which the counterclockwise cooling circuit is carried out.
In einer Ausgestaltung der Vorrichtung ist vorgesehen, dass als Treibgas im Druckbehälter Kohlendioxid oder Stickstoff verwendet werden. Dies hat den Vorteil, dass wenn der Tank kein Absorptionsmittel mehr enthält, weil es aufgebraucht ist, noch eine Inertisierung des Raumes erfolgt.In one embodiment of the device it is provided that carbon dioxide or nitrogen are used as the propellant gas in the pressure vessel. This has the advantage that when the tank no longer contains any absorbent because it has been used up, the room is still rendered inert.
In einer weiteren Ausgestaltung der Vorrichtung ist die Auffangwanne mit einem Abzug versehen, der in einen abschließbaren und entfernbaren Behälter mündet. Das hat den Vorteil, dass die beladene Absorptionsflüssigkeit entnommen und wiederaufbereitet werden kann.In a further embodiment of the device, the collecting trough is provided with a vent which opens into a lockable and removable container. This has the advantage that the loaded absorption liquid can be removed and reprocessed.
Weitere Ausgestaltungen der Vorrichtung betreffen die Eindüsung. Hierbei ist vorgesehen, dass eine sehr feine Düse verwendet wird, die zu sehr feinem Nebel bei der Versprühung führt. Es können auch eine Vielzahl von Düsen verwendet werden, die über einen Header gespeist werden. Diese Düsen können vertikal oder horizontal ausgerichtet werden, wobei die Ausrichtung auf bekannte Risikostellen im Kältekreis gerichtet werden kann.Further refinements of the device relate to the injection. It is provided that a very fine nozzle is used, which leads to a very fine mist during spraying. A variety of nozzles fed via a header can also be used. These nozzles can be oriented vertically or horizontally, whereby the orientation can be directed to known risk areas in the refrigeration circuit.
Die Erfindung wird nachfolgend anhand von drei Prinzipskizzen anhand einer Wärmepumpe näher erläutert. Hierbei zeigen
- Fig. 1:
- ein vereinfachtes Schema der Vorrichtung mit einer Düse,
- Fig. 2:
- ein vereinfachtes Schema der Vorrichtung mit vertikalen Düsen,
- Fig. 3:
- ein vereinfachtes Schema der Vorrichtung mit vertikalen und horizontalen Düsen.
- Fig. 1:
- a simplified scheme of the device with a nozzle,
- Fig. 2:
- a simplified scheme of the device with vertical nozzles,
- Fig. 3:
- a simplified scheme of the device with vertical and horizontal nozzles.
Der Druckbehälter 4 ist über eine Druckleitung mit dem automatischen Ventil 5 verbunden. Als Signalgeber 6 für das Ventil 5 dient eine Konzentrationsmessung für gasförmiges Arbeitsfluid, welches in diesem Beispiel R290 ist. Die Konzentrationsmessung erfolgt dabei innerhalb des Kapselgehäuses 3. Sobald eine Gaskonzentration von 40 Prozent der Zündgrenze, die in Luft bei 1,7 Prozent liegt, also 0,68 Prozent gemessen wird, öffnet das Ventil 5 automatisch.The
In diesem Fall wird die Absorptionsflüssigkeit über eine Druckleitung zu der Zerstäuberdüse 7 geleitet, die sich innerhalb des Kapselgehäuses 3 befindet, wo eine feine Zerstäubung der Absorptionsflüssigkeit erfolgt. Die Absorptionsflüssigkeit löst das Propan und läuft in die Auffangwanne 8 ab. Von dort aus wird es über einen gesicherten Ablauf in den Auffangbehälter 10 geleitet. Sobald die Konzentrationsmessung unter 10 Prozent der Zündgrenze gefallen ist, also 0,17 Prozent Propan in Luft beträgt, wird die Eindüsung beendet.In this case, the absorption liquid is conducted via a pressure line to the
Sollte sich eine Leckage im Kältekreis befinden, die zu einem Wiederanstieg der Propankonzentration führen sollte, kann dieser Zyklus so lange wiederholt werden, bis die Absorptionsflüssigkeit im Druckbehälter 4 aufgebraucht ist. Danach wird das Kapselgehäuse mit dem Treibgas inertisiert, so dass auch bei einem weiteren Austritt von Arbeitsfluid eine Entzündung sicher verhindert wird.If there is a leak in the refrigeration circuit which should lead to a renewed increase in the propane concentration, this cycle can be repeated until the absorption liquid in the
- 11
- WärmepumpeHeat pump
- 22
- KältekreisRefrigeration cycle
- 33
- KapselgehäuseCapsule housing
- 44th
- Druckbehälterpressure vessel
- 55
- VentilValve
- 66th
- Signalgeber mit KonzentrationsmessungSignal transmitter with concentration measurement
- 77th
- ZerstäuberdüseAtomizing nozzle
- 88th
- AuffangwanneDrip pan
- 99
- Ablaufprocedure
- 1010
- AuffangbehälterCollecting container
- 1111
- horizontale Düsenreihehorizontal row of nozzles
- 1212th
- HeaderHeader
- 1313th
- vertikale Düsenreihevertical row of nozzles
Claims (11)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019126949.0A DE102019126949A1 (en) | 2019-10-08 | 2019-10-08 | Absorption of flammable refrigerants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3805671A1 true EP3805671A1 (en) | 2021-04-14 |
| EP3805671B1 EP3805671B1 (en) | 2022-11-23 |
Family
ID=72473337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20195255.3A Active EP3805671B1 (en) | 2019-10-08 | 2020-09-09 | Absorption of combustible coolant |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3805671B1 (en) |
| DE (1) | DE102019126949A1 (en) |
| DK (1) | DK3805671T3 (en) |
| ES (1) | ES2938070T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022100635A1 (en) | 2022-01-12 | 2023-07-13 | Vaillant Gmbh | Limitation of VOC-Co absorption |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021214715A1 (en) | 2021-12-20 | 2023-06-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | Heat pump device and collection unit for the heat pump device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4411281A1 (en) * | 1994-03-31 | 1995-10-05 | Daimler Benz Ag | Motor vehicle with air conditioning |
| JP2000105034A (en) * | 1998-09-29 | 2000-04-11 | Sanyo Electric Co Ltd | Cooling storage |
| DE102012011323A1 (en) * | 2012-06-06 | 2012-12-13 | Daimler Ag | System for filling refrigerant tank for filling arrangement of motor vehicle with flammable refrigerant, has vacuum unit for evacuating refrigerant tank, where evacuation line of vacuum unit is connected to filling connection |
| DE102011116863A1 (en) * | 2011-10-25 | 2013-04-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for securing device for closed thermodynamic cycle, involves contacting adsorbent with environmentally hazardous, toxic and/or flammable material, and selectively binding flammable substance by adsorbent |
| DE102014211302A1 (en) * | 2014-06-13 | 2015-12-17 | BSH Hausgeräte GmbH | Safety device for a household appliance, household appliance with such and method of operating the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014112545B4 (en) * | 2014-09-01 | 2022-06-02 | Denso Automotive Deutschland Gmbh | Compact unit for a motor vehicle and method for emergency treatment of a motor vehicle air conditioning system |
-
2019
- 2019-10-08 DE DE102019126949.0A patent/DE102019126949A1/en active Pending
-
2020
- 2020-09-09 EP EP20195255.3A patent/EP3805671B1/en active Active
- 2020-09-09 DK DK20195255.3T patent/DK3805671T3/en active
- 2020-09-09 ES ES20195255T patent/ES2938070T3/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4411281A1 (en) * | 1994-03-31 | 1995-10-05 | Daimler Benz Ag | Motor vehicle with air conditioning |
| JP2000105034A (en) * | 1998-09-29 | 2000-04-11 | Sanyo Electric Co Ltd | Cooling storage |
| DE102011116863A1 (en) * | 2011-10-25 | 2013-04-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for securing device for closed thermodynamic cycle, involves contacting adsorbent with environmentally hazardous, toxic and/or flammable material, and selectively binding flammable substance by adsorbent |
| DE102012011323A1 (en) * | 2012-06-06 | 2012-12-13 | Daimler Ag | System for filling refrigerant tank for filling arrangement of motor vehicle with flammable refrigerant, has vacuum unit for evacuating refrigerant tank, where evacuation line of vacuum unit is connected to filling connection |
| DE102014211302A1 (en) * | 2014-06-13 | 2015-12-17 | BSH Hausgeräte GmbH | Safety device for a household appliance, household appliance with such and method of operating the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022100635A1 (en) | 2022-01-12 | 2023-07-13 | Vaillant Gmbh | Limitation of VOC-Co absorption |
| EP4212801A1 (en) | 2022-01-12 | 2023-07-19 | Vaillant GmbH | Limiting voc-co absorption |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3805671B1 (en) | 2022-11-23 |
| DK3805671T3 (en) | 2023-02-20 |
| ES2938070T3 (en) | 2023-04-04 |
| DE102019126949A1 (en) | 2021-04-08 |
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