EP3705823B1 - Dispositif pour une intervention de service en toute sécurité pour un boîtier et procédé d'ouverture du boîtier. - Google Patents

Dispositif pour une intervention de service en toute sécurité pour un boîtier et procédé d'ouverture du boîtier. Download PDF

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Publication number
EP3705823B1
EP3705823B1 EP20160552.4A EP20160552A EP3705823B1 EP 3705823 B1 EP3705823 B1 EP 3705823B1 EP 20160552 A EP20160552 A EP 20160552A EP 3705823 B1 EP3705823 B1 EP 3705823B1
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EP
European Patent Office
Prior art keywords
service
cartridge
enclosure
opening
neck
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.)
Active
Application number
EP20160552.4A
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German (de)
English (en)
Other versions
EP3705823A1 (fr
Inventor
Tobias Lingk
Christof Krampe-Zadler
Hans-Josef Spahn
Thomas-Friedrich Szuder
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.)
Vaillant GmbH
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Vaillant GmbH
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Publication date
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Priority to PL20160552T priority Critical patent/PL3705823T3/pl
Publication of EP3705823A1 publication Critical patent/EP3705823A1/fr
Application granted granted Critical
Publication of EP3705823B1 publication Critical patent/EP3705823B1/fr
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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/008—Alarm devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/12—Preventing or detecting fluid leakage
    • 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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • 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
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/005—Service stations therefor
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening

Definitions

  • the invention relates to irregular states in refrigeration circuits in which a working fluid acting as a refrigerant is circulated in a thermodynamic cycle, such as the Clausius-Rankine cycle.
  • thermodynamic cycle such as the Clausius-Rankine cycle.
  • These are mainly heat pumps, air conditioning systems and refrigerators, as they are common in residential buildings.
  • Residential buildings are private houses, apartment building complexes, hospitals, hotel complexes, restaurants and combined residential and commercial buildings in which people live and work permanently, in contrast to mobile devices such as car air conditioning systems or transport boxes, or industrial systems or medical devices. What these cycle processes have in common is that they use energy to generate useful heat or cold and form heat transfer systems.
  • thermodynamic cycle processes used have been known for a long time, as have the safety problems that can arise when using suitable working fluids. Aside from water, the most common working fluids of the time were flammable and toxic. In the last century they led to the development of safety refrigerants, which consisted of fluorinated hydrocarbons. However, it turned out that these safety refrigerants damage the ozone layer, lead to global warming, and that their safety-related harmlessness led to design carelessness. Up to 70% of the turnover was accounted for by the need to refill leaking systems and their leakage losses, which was accepted as long as this was felt to be economically justifiable in individual cases and promoted the need for replacement purchases.
  • Propane is also heavier than air, so it sinks to the ground in still air and collects there. If part of the propane collects in a low-flow zone of the closed room in which the malfunctioning unit is located, the local explosion limits can be reached much more quickly than would be expected from the quotient of the total volume of the room and the amount of propane that had escaped.
  • the WO 2015/032905 A1 seeks to solve this problem by a generator for electric power in the opening or locking this space is integrated and when it is actuated in a first step generates and provides the electrical energy with which the sensor is activated, and in the event of an alarm, the Locking then does not release, but causes the closed room to be ventilated, and only allows unlocking and opening in a second step.
  • the DE 10 2011 116 863 A1 describes a method for securing a device for a thermodynamic cycle which is operated with a process fluid which contains or consists of at least one environmentally hazardous, toxic and/or flammable substance.
  • a process fluid which contains or consists of at least one environmentally hazardous, toxic and/or flammable substance.
  • an adsorbent is brought into contact with the process fluid, in particular ammonia, propane or propene, and the substance is selectively bound by the adsorbent.
  • the adsorbent is regenerated after use.
  • Zeolite also in combination with imidazole or phosphates, and also CuBTC are proposed as adsorbents; the adsorbent can be in the form of a bed, a shaped body, a paint, a spray film or a coating.
  • the support structure of the shaped body can consist of a microstructure, lamellar structure, tube bundle, tube register and sheet metal and must be mechanically stable and greatly increase the surface area.
  • the potentially contaminated air is usually circulated continuously, but it can also be initiated by a sensor that switches on the ventilation after a threshold value has been reached or if an accident is detected.
  • the adsorption can be carried out inside or outside a closed space.
  • the DE 195 25 064 C1 describes a refrigeration machine with a gas-tight housing, which accommodates all refrigerant-carrying components of the machine, a space connecting the interior of the gas-tight housing with an outlet is provided, and the space is filled with a refrigerant sorbing substance.
  • the amount of sorbing substance is dimensioned in such a way that the entire amount of refrigerant that may escape can be absorbed and kept away from the environment.
  • the space filled with the sorbing substance is open to the environment. For heavier-than-air refrigerants, the space is open at the bottom, for lighter-than-air ones, it is open at the top, so a conveying fan is not required.
  • the sorbent is introduced into the housing and completely encloses the refrigeration machine or the refrigerant-carrying equipment. Baffles are provided on its way out to prevent shunt flows and force escaping gas through the sorbent. A double-walled embodiment, in which the sorbent is arranged in the double jacket, is also possible. A measuring device for refrigerant can be provided at the outlet of the space filled with the sorbing substance to the environment.
  • EP 2 918 987 A1 shows a cartridge that can be connected directly to the service valve of the printing system without the interposition of a line, hose or other interconnecting arrangement.
  • the adapter which consists only of a fitting in which the inlet to be coupled to the cartridge is next to the outlet to be coupled to the service valve, prevents the formation of air in the adapter. Therefore, with this arrangement, there is no need to force out the air normally contained in the hose or conduit or other intermediate arrangement.
  • the object of the invention is therefore to provide a device that enables service intervention if a leak has occurred and there may still be flammable working fluid inside the housing.
  • the refrigeration circuit 1 shows the refrigeration circuit 1 of a heat pump with a compressor 2, a condenser 3, a pressure reduction 4 and an evaporator 5 in a closed housing 6.
  • the housing has a heat source connection 7, a heat source flow 8, a heat sink flow 9 and a heat sink connection 10.
  • the refrigeration circuit 1 is operated with the flammable working fluid propane, which is also known under the designation R290.
  • the propane can be conducted together with the exhaust air 18 through the channel 11, which is open to the environment, and through the activated carbon layer 12, where it is separated, while inert air components can escape into the environment.
  • the housing 6 has a service opening 14 which has a service connection 15 for a service cartridge 13 .
  • the service opening 14 is secured with an unlocking bolt 16 and sealed with a seal 17 . This prevents the service opening 14 from being opened in the event of a leak while an ignitable mixture is inside the housing.
  • the service module consists of the service cartridge 13, which has a connecting line 24 with a valve and a cartridge neck 19 with an external thread 25, the service connection 15, which has an internal thread 26, a closure cap 21, which has a sealing membrane 23, a cartridge neck sealing surface 27 , which also covers the first threads of the internal thread 26, a sealing seal 20 which protects the internal thread 26 and can be easily pierced, and a spike 22 which is fixed to the sealing membrane 23.
  • the service cartridge 13 is an inert gas under pressure, such as nitrogen. The amount of inert gas stored in the service cartridge 13 corresponds to at least the volume of the housing 6 in the expanded state.
  • FIG. 3 shows the service module at the beginning of its use.
  • the sealing seal is broken with the cartridge neck 19 of the service cartridge 13 and the external thread 25 of the cartridge neck 19 is screwed into the internal thread 26 of the service connection 15 .
  • the sealing surface 27 causes the intermeshing threads to be gas-tight.
  • the mandrel 22 pierces the closure of the connecting line 24, which causes the inert gas from the service cartridge 13 to be able to flow out. However, it cannot flow into the housing 6 yet.
  • the sealing membrane 23 is pierced and the inert gas can flow through the connecting line 24 into the housing. In doing so, it displaces the possibly ignitable air/working fluid mixture through the activated carbon layer 12. Such a process takes about ten seconds.
  • figure 5 shows the service module towards the end of its service.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Claims (2)

  1. Dispositif pour une intervention de maintenance sûre pour un boîtier, dans lequel un fluide de travail inflammable d'un processus circulaire gauche se trouve, dans lequel
    - le boîtier (6) présente une voie de gaz ouverte, protégée par un adsorbant (12) pour du fluide de travail vers l'environnement,
    - le boîtier (6) possède une ouverture de maintenance (14) qui est protégée par un dispositif de déverrouillage (16) contre l'ouverture,
    - l'ouverture de maintenance (14) présente un raccord de maintenance (15) pour une cartouche de maintenance (13),
    - la cartouche de maintenance (13) contient un gaz inerte se trouvant sous pression dans une quantité qui correspond, à l'état détendu, au moins au volume du récipient (6),
    - la cartouche de maintenance (13) présente un col de cartouche (19) avec une conduite de liaison (24) dans le col de cartouche (19) et un filet extérieur (25) sur le col de cartouche (19),
    - le raccord de maintenance (15) possède un filet intérieur (26) qui s'adapte au filet extérieur (25) du col de cartouche (19),
    - le raccord de maintenance (15) présente un capuchon de fermeture (21), dans lequel
    - le capuchon de fermeture (21) comprend un sceau étanche (20) dirigé vers le côté extérieur du boîtier (6),
    - en outre une membrane étanche (23) dirigée vers le côté intérieur du boîtier (6), sur laquelle une épine (22) est agencée en direction du côté extérieur du boîtier (6),
    - en outre une surface étanche (27) sur le filet intérieur (26).
  2. Procédé d'ouverture d'un boîtier, dans lequel un fluide de travail inflammable d'un processus circulaire gauche se trouve, dans lequel
    - le boîtier (6) présente une voie de gaz ouverte, protégée par un adsorbant (12) pour du fluide de travail vers l'environnement,
    - le boîtier (6) possède une ouverture de maintenance (14) qui est protégée par un dispositif de déverrouillage (16) contre l'ouverture,
    - l'ouverture de maintenance (14) présente un raccord de maintenance (15) pour une cartouche de maintenance (13),
    - la cartouche de maintenance (13) contient un gaz inerte se trouvant sous pression dans une quantité qui correspond à l'état détendu au moins au volume du récipient (6),
    - la cartouche de maintenance (13) présente un col de cartouche (19) avec une conduite de liaison (24) dans le col de cartouche (19) et un filet extérieur (25) sur le col de cartouche (19),
    - le raccord de maintenance (15) possède un filet intérieur (26) qui s'adapte au filet extérieur (25) du col de cartouche (19),
    - le raccord de maintenance (15) présente un capuchon de fermeture (21), dans lequel
    - le capuchon de fermeture (21) comprend un sceau étanche (20) dirigé vers le côté extérieur du boîtier (6),
    - en outre une membrane étanche (23) dirigée vers le côté intérieur du boîtier (6), sur lequel une épine (22) est agencée en direction du côté extérieur du boîtier (6),
    - en outre une surface étanche (27) sur le filet intérieur (26),
    caractérisé par les étapes de procédé suivantes :
    - le vissage du col de cartouche (19) dans le raccord de maintenance (15),
    - la poursuite de la rotation jusqu'à ce que l'épine (22) de la membrane étanche (23) heurte la conduite de liaison (24) de la cartouche de maintenance (13),
    - la poursuite de la rotation jusqu'à ce que le col de cartouche (19) heurte la membrane étanche (23),
    - la vidange de la cartouche de maintenance (13) dans le boîtier,
    - la poursuite de la rotation jusqu'à ce que le col de cartouche (19) actionne le dispositif de déverrouillage (16),
    - l'ouverture de l'ouverture de maintenance (14).
EP20160552.4A 2019-03-05 2020-03-03 Dispositif pour une intervention de service en toute sécurité pour un boîtier et procédé d'ouverture du boîtier. Active EP3705823B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL20160552T PL3705823T3 (pl) 2019-03-05 2020-03-03 Urządzenie do bezpiecznej interwencji serwisowej w obudowie i sposób otwierania obudowy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019105522.9A DE102019105522A1 (de) 2019-03-05 2019-03-05 Serviceeingriff

Publications (2)

Publication Number Publication Date
EP3705823A1 EP3705823A1 (fr) 2020-09-09
EP3705823B1 true EP3705823B1 (fr) 2022-02-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20160552.4A Active EP3705823B1 (fr) 2019-03-05 2020-03-03 Dispositif pour une intervention de service en toute sécurité pour un boîtier et procédé d'ouverture du boîtier.

Country Status (5)

Country Link
EP (1) EP3705823B1 (fr)
DE (1) DE102019105522A1 (fr)
DK (1) DK3705823T3 (fr)
ES (1) ES2909205T3 (fr)
PL (1) PL3705823T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4339529A1 (fr) 2022-09-14 2024-03-20 Vaillant GmbH Port de service pour un boîtier de pompe à chaleur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022132781A1 (de) * 2022-12-09 2024-06-20 Vaillant Gmbh Adsorber mit Leitelementen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29510024U1 (de) * 1995-06-21 1995-11-09 Ilka Mafa Kältetechnik GmbH, 06184 Döllnitz Sicherheitseinrichtung für Maschinenräume mit Ammoniak-Kälteaggregaten
DE19525064C1 (de) 1995-07-10 1996-08-01 Joachim Dr Ing Paul Kältemaschine
JP2001174109A (ja) * 1999-12-15 2001-06-29 Mitsubishi Electric Corp 冷媒回収装置および冷媒回収方法および冷凍サイクルの洗浄方法および冷凍サイクルの交換方法および冷凍サイクル装置
DE102011116863A1 (de) 2011-10-25 2013-04-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Sicherung einer Vorrichtung für einen thermodynamischen Kreisprozess und abgesicherte Vorrichtung für einen thermodynamischen Kreisprozess
WO2015032905A1 (fr) 2013-09-05 2015-03-12 Holger König Procédé permettant d'empêcher une fuite d'un contenant et contenant pourvu d'un dispositif anti-fuite
US10401066B2 (en) * 2014-03-14 2019-09-03 Errecom S.R.L. Apparatus for injecting a fluid in a pressurized air conditioning or refrigeration system
DE102014112545B4 (de) * 2014-09-01 2022-06-02 Denso Automotive Deutschland Gmbh Kompaktaggregat für ein Kraftfahrzeug und Verfahren zur Notfallbehandlung einer Kraftfahrzeugklimaanlage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4339529A1 (fr) 2022-09-14 2024-03-20 Vaillant GmbH Port de service pour un boîtier de pompe à chaleur

Also Published As

Publication number Publication date
ES2909205T3 (es) 2022-05-05
PL3705823T3 (pl) 2022-04-19
DE102019105522A1 (de) 2020-09-10
EP3705823A1 (fr) 2020-09-09
DK3705823T3 (da) 2022-03-21

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