EP3059528B1 - Enceinte de stockage frigorifique et procede d'operation d'une telle enceinte - Google Patents

Enceinte de stockage frigorifique et procede d'operation d'une telle enceinte Download PDF

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Publication number
EP3059528B1
EP3059528B1 EP16155877.0A EP16155877A EP3059528B1 EP 3059528 B1 EP3059528 B1 EP 3059528B1 EP 16155877 A EP16155877 A EP 16155877A EP 3059528 B1 EP3059528 B1 EP 3059528B1
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EP
European Patent Office
Prior art keywords
blower module
air
mobile
chilled goods
cold warehouse
Prior art date
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Active
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EP16155877.0A
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German (de)
English (en)
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EP3059528A1 (fr
Inventor
Stefan Hummrich
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.)
airinotec GmbH
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airinotec GmbH
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Publication of EP3059528A1 publication Critical patent/EP3059528A1/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
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F25D13/06—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space
    • F25D13/067—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space with circulation of gaseous cooling fluid
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/005—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces in cold rooms
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
    • F25D2317/0681—Details thereof

Definitions

  • the invention relates to a cold store.
  • the invention also relates to a method for operating such a cold store.
  • Such a cold chain usually includes cooling in a cooling tunnel after packaging and palletizing the goods to be cooled, in order to bring the goods to be cooled quickly to storage temperature. They are then stored in a cold store to maintain the temperature until the goods are finally put on the transport route.
  • the expert understands cold storage to be buildings in which an indoor temperature is artificially generated which is usually below the ambient temperature.
  • DE 20 2005 000 167 U1 It is proposed that the cooling goods should be cooled down directly in the cold store after packaging and palletizing, and thus to dispense with an upstream cooling tunnel. To do this, suggests DE 20 2005 000 167 U1 propose to provide so-called rapid cooling areas in the cold store, at which the stored refrigerated goods are increasingly exposed to cooling air. For this purpose, additional air distribution shafts and air guiding devices must be provided in the cold store, which ultimately only shift the structural effort from the cooling tunnel to the side of the cold store. In this case, the production capacity is limited by the number of permanently installed rapid cooling spaces.
  • DE 695 17 632 T2 a portable refrigeration unit is known which is specifically used to cool cargo compartments in order to keep refrigerated food below a predetermined temperature. Rapid cooling of the food, which requires a high cooling capacity, is not required. In this respect, the takes over DE 695 17 632 T2 known cooling unit in relation to the cargo hold only the function of the cooling device to maintain a desired ambient temperature for the already cooled goods. Neither the creation of rapid cooling spaces within the cargo hold to eliminate excess capacities in an upstream cooling tunnel nor the provision of a particularly simple unit suitable for this purpose are described in DE 695 17 632 T2 taught.
  • Another portable cooling unit is off US 2014/0260365 A1 known, which is expressly used to cool pallets in a racking system when there is expressly no cold store available.
  • the cooling unit includes, among other things, a cooling unit that is installed in a shelving system above the pallet to be cooled.
  • the focus is on maintaining a certain ambient temperature for the goods to be cooled.
  • the task of rapid cooling ie reducing the temperature of the goods to be cooled while removing process heat from the goods to be cooled, arises in US 2014/0260365 A1 Not.
  • the invention is based on the object, with an existing cold chain and existing cold store, to enable an at least occasional increase in manufacturing capacities in the production of refrigerated goods with the simplest means.
  • Any production peaks that exceed the capacity of an existing cooling tunnel or existing permanently installed rapid cooling areas can be absorbed by temporarily bringing one or more mobile blower modules into the warehouse.
  • blower modules are practically self-sufficient. All you need is an electrical connection. As a result, the structural effort on the part of the cold store remains minimal.
  • the mobile fan module (s) can be moved quickly and easily within the cold store.
  • their arrangement can be adapted very flexibly to warehouse logistics considerations.
  • Uniform distribution can counteract the formation of hot spots in the cold store.
  • the mobile fan modules are also adapted to the dimensions of the parking spaces and can therefore be placed on them, the operation of the warehouse is not impaired by the mobile fan modules.
  • the present invention makes the capacity of a cold chain more flexible with extremely little effort, which makes it possible to keep excess cooling capacities low and thus to save energy.
  • a mobile fan module can have two opposite air outlets which are directed from one parking space onto two adjacent parking spaces. This makes it possible to use a mobile blower module to cool goods to be cooled at two parking spaces at the same time, thus keeping the outlay on equipment particularly low. Further flexibility can be achieved through individual control of the two neighboring parking spaces.
  • the mobile fan modules are adapted to the dimensions of the parking spaces. These can preferably be moved with the same storage and retrieval unit as the refrigerated goods themselves.
  • a control device for controlling the storage and retrieval unit and the mobile fan module (s) can be provided, which makes it possible to largely automate the warehouse management.
  • the control device is preferably configured in such a way that, after a predetermined time interval, the goods to be cooled are moved to the parking space on the opposite side of the mobile fan module.
  • the fan module can also be moved to the parking space on the opposite side of the items to be cooled, for which purpose, however, a corresponding electrical connection of the mobile fan module to the new parking space must be ensured. It is also possible to swap the positions of the items to be cooled and the mobile fan module. This achieves a particularly fast and effective cooling of the goods to be cooled to storage temperature.
  • the cold store explained above enables an operation in which chilled goods with increased cooling requirements are brought to a parking space after being channeled into the cold store, which is located next to another parking space where a mobile fan module is already parked or is then switched off, whereupon by switching on of the mobile blower module, the refrigerated goods with an increased cooling requirement flow through the mobile blower module with air in the cold store and are cooled more quickly due to the increased heat transfer that this causes.
  • the goods to be cooled can be moved to the parking space on the opposite side of the mobile fan module after a predetermined time interval and air can continue to flow from there.
  • the duration of the time interval can either be specified or, for example, result from observing the temperature of the goods to be cooled. If a certain target temperature is reached, the refrigerated goods are moved.
  • the temperature of the goods to be cooled can be measured, for example, by means of at least one contactless sensor.
  • the mobile blower module can comprise at least one pressure chamber, the air outlets of which are opposite one another on the outside of the blower module, and at least one fan for generating an overpressure in the at least one pressure chamber.
  • Such a unit can be used very flexibly in a cold store. It is characterized by an extremely simple structure and only requires a power connection in the cold store. The air used for cooling is drawn from the immediate surroundings within the cold store. Air distribution shafts and other structural measures on the part of the cold store, as described in DE 20 2005 000 167 U1 are not required here.
  • the air outlets of the mobile fan module are designed as nozzle plates with a multiplicity of outlet openings, the outlet openings being arranged distributed over the surface of the respective nozzle plate. In this way, a favorable outflow behavior is achieved over the entire surface of the air outlets, whereby, for example, goods stacked on pallets can be cooled very evenly.
  • the mobile blower module can be designed with two separate pressure chambers, which are separated by an inlet duct arranged between them, with a fan being arranged in each pressure chamber, the air inlet of which opens into the inlet duct. This enables an individual flow of water from two neighboring parking spaces.
  • the operating times of the two fans can be set individually using a control device provided on the mobile fan module.
  • the fans can be designed as radial fans whose axis of rotation runs perpendicular to the respective nozzle plate. This allows compared to Axial fans allow the air to flow more evenly on the nozzle plates and allow two pressure chambers to be attached over the surface of a Euro pallet.
  • the exemplary embodiments relate to a cold chain for goods to be cooled, which in the present case is understood to mean, in addition to some industrial materials and products, in particular food, such as dairy products.
  • Such refrigerated goods arrive, as in Figure 1 shown, after production and filling in a suitable system 1 in a palletizing device 2, where the corresponding outer packaging is stacked on a pallet, if necessary with the aid of additional carriers.
  • the pallet loaded with refrigerated goods is then introduced into a cooling tunnel 3 in order to cool the refrigerated goods more rapidly.
  • the pallet is channeled into a cold store 4, where it remains until it is removed and is kept at the cooling temperature.
  • the cold store 4 shown has a multiplicity of parking spaces 5 with the same dimensions for receiving goods K to be cooled.
  • the spaces 5 are dimensioned so that they can each hold a pallet with refrigerated goods.
  • Several parking spaces 5 lie next to one another within the cold store 4.
  • the parking spaces 5 are preferably arranged in rows 6.
  • adjacent parking spaces 5 can be arranged one above the other in one or more levels, as shown in FIG Figure 3 is shown.
  • Aisles 7 are provided between the rows of parking spaces 6, which allow access to the parking spaces 5 for a storage and retrieval unit 8.
  • a cooling device 9 for cooling the air in the cold store 4 can be seen.
  • the air temperature in the cold store 4 is kept at a temperature in the range from approximately 0 to 25 ° C, preferably 2 to 10 ° C. If necessary, the temperature can also be kept below the freezing point of water.
  • the mobile blower module 10 is adapted to the dimensions of the parking spaces 5 and can optionally be parked on one of the parking spaces 5. If necessary, several mobile fan modules 10 can also be introduced into the cold store 4, as shown in FIG Figure 2 is shown. Since the mobile fan modules 10 are accommodated in the parking spaces 5, operation of the other parking spaces 5 by storage and retrieval units 8 remains unaffected. The latter are not only able to transport the goods to be cooled to the desired parking spaces 5, but also to transport and store the mobile fan modules 10 within the cold store 4. For this purpose, the mobile blower modules 10 can be provided with coupling structures suitable for the respective storage and retrieval unit 8, which are preferably integrated into the frame of the mobile blower module 10.
  • the mobile fan modules 10 are each operated electrically and do not have their own cooling unit. They are configured in such a way that from a parking space 5 at least one to apply a stream of air to the neighboring parking space 5. As a result of the increased flow rate, the items to be cooled located next to the mobile fan module 10 are cooled more quickly. The air required for this is sucked in within the cold store 4 from the vicinity of the parking space 5 of the respective mobile fan module 10. For the mobile blower module 10, apart from a power supply and possibly a signaling integration into a warehouse management system, no further measures are required on the part of the cold store 4. Retrofitting of the mobile fan modules 10 in an existing cold store 4 can therefore be accomplished with minimal effort.
  • the cooling capacity of a cold chain can be increased very briefly via the mobile fan modules 10. If the mobile fan modules 10 are no longer required and a higher storage capacity is temporarily required, they can be removed from the cold store 4 for a short time.
  • the mobile fan modules 10 thus make the capacities of a cooling chain more flexible, which makes it possible to avoid bottlenecks and to keep excess cooling capacities low and thus save energy.
  • FIGS Figures 4 to 6 Exemplary embodiments of a mobile fan module 10 for use in cold stores 4 are shown in FIGS Figures 4 to 6 shown in more detail.
  • the mobile fan module 10 comprises a pressure chamber 11, the air outlets 15 and 16 of which are opposite one another on the outside of the mobile fan module 10, as shown in FIG Figure 4 is shown.
  • an air guiding device 13 and 14 can be connected upstream of the air outlets 15 and 16 in the direction of flow.
  • this includes at least one fan 17 for generating an overpressure in the pressure chamber 11.
  • the air supply to the air outlets 15 and 16 can be controlled via a flap 19 so that, for example, cooling air can also be emitted via only one of the air outlets 15 and 16.
  • the mobile blower module 10 has two separate pressure chambers 11 and 12, which are separated by an inlet duct 20 arranged between them.
  • a separate fan 17 and 18 is arranged in each pressure chamber 11 and 12, the air inlet of which opens into the inlet duct 20.
  • the pressure chambers 11 and 12 each have an air outlet 15 and 16 which are opposite one another on the outer sides of the mobile fan module 10. If necessary, this can also be used here the air outlets 15 and 16 are each preceded by an air guiding device 13 and 14.
  • the air outlets 15 and 16 of the aforementioned exemplary embodiments are designed as nozzle plates 21 with a large number of outlet openings 22.
  • the outlet openings 22 can be arranged distributed essentially over the entire surface of the respective nozzle plate 21 in order to achieve a good flow of the goods to be cooled.
  • fans 17 and 18 which are designed as radial fans and whose axis of rotation A is perpendicular to the respective nozzle plate 21, a compact design and a uniform pressure build-up in the pressure chambers 11 and 12 can be achieved, especially when there are several pressure chambers 11 and 12.
  • the flow is in Figure 6 indicated by arrows.
  • a control device 23 for individually setting the operating times of the two fans 17 and 18 can be provided on the mobile fan module 10.
  • the parking spaces adjacent to the mobile blower module 10 can be individually flown with air.
  • the fan 17 and the flap 19 can be controlled for the same purpose.
  • a sensor 24, for example a light barrier, can detect the presence of items to be cooled in an adjacent parking space 5 and then start a flow of items to be cooled.
  • a mobile blower module 10 If such a mobile blower module 10 is parked on a parking space 5, its opposing air outlets 15 and 16 can be directed to the two adjacent parking spaces 5 in order to cool down the items to be cooled more intensely.
  • either a mobile blower module 10 is brought to the refrigerated goods in question, or refrigerated goods to be cooled are placed next to a mobile blower module 10 already in place. Subsequently, by switching on the mobile blower module 10, the goods to be cooled with an increased cooling requirement are transferred to the cold store 4 by the mobile blower module 10 existing air flows.
  • the required cooling time can be set via the control device 23.
  • a control device for controlling the storage and retrieval unit 8 and the mobile fan module (s) 10 can be configured in such a way that, after a predetermined time interval, the goods to be cooled are moved to the parking space 5 on the opposite side of the mobile fan module 10, where it continues from the other Side, with air flowing through it.
  • the fan module 10 is moved to the parking space 5 on the opposite side of the goods to be cooled and the goods to be cooled are then flowed with air from the other side. It is also possible to swap the positions of the items to be cooled and of the mobile fan module 10. In this case too, air flows through the goods to be cooled in succession from two opposite sides. These processes can be repeated if necessary.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Claims (11)

  1. Entrepôt frigorifique comprenant :
    une multitude d'emplacements (5) pour recevoir des produits à réfrigérer et
    un dispositif de refroidissement (9) pour refroidir l'air qui se trouve dans l'entrepôt frigorifique (4) et
    un ou plusieurs modules soufflants (10) sans groupe réfrigérant propre qui sont placés dans l'entrepôt frigorifique, chaque module soufflant (10) fonctionnant électriquement,
    cependant que les emplacements (5) sont dimensionnés pour recevoir une palette de produits à réfrigérer chacun, cependant que plusieurs de ces emplacements (5) sont juxtaposés avec les mêmes dimensions et
    que chaque module soufflant (10) est adapté aux dimensions des emplacements (5) et peut être déposé de manière sélective sur l'un des emplacements (5) pour impacter avec un courant d'air d'au moins un emplacement voisin (5) à partir d'un emplacement (5), courant pour lequel l'air est aspiré à l'intérieur de l'entrepôt frigorifique (4) de l'environnement de l'emplacement (5) du module soufflant mobile respectif (10).
  2. Entrepôt frigorifique selon la revendication 1, caractérisé en ce que le module soufflant mobile (4) présente deux sorties d'air opposées (15, 16) qui sont orientées à partir d'un emplacement (5) sur deux emplacements voisins (5).
  3. Entrepôt frigorifique selon la revendication 1 ou 2, caractérisé par au moins un transstockeur (8) pour déplacer les produits à réfrigérer ainsi que le au moins un module soufflant mobile (10).
  4. Entrepôt frigorifique selon la revendication 3, caractérisé par un dispositif de commande pour commander le transstockeur (8) et le ou les modules soufflants mobiles (10) qui sont configurés de manière à déplacer, après un intervalle de temps prédéterminé ou après qu'une température cible ait été atteinte,
    les produits à réfrigérer sur l'emplacement (5) sur le côté opposé du module soufflant mobile (10) ou
    à déplacer le module soufflant (10) sur l'emplacement (5) sur le côté opposé des produits à réfrigérer ou
    d'échanger les positions des produits à réfrigérer et du module soufflant mobile (10).
  5. Entrepôt frigorifique selon l'une des revendications 1 à 4, caractérisé en ce que le module soufflant mobile (10) comprend :
    - au moins une chambre pressurisée (11, 12),
    - deux sorties d'air (15, 16) sur la au moins une chambre pressurisée (11, 12), cependant que les deux sorties d'air (15, 16) sont en face l'une de l'autre sur des côtés extérieurs du module soufflant mobile (10) et
    - au moins un ventilateur (17, 18) pour produire une surpression dans la au moins une chambre pressurisée (11, 12).
  6. Entrepôt frigorifique selon la revendication 5, caractérisé en ce que le module soufflant mobile (10) présente deux chambres pressurisées (11, 12) qui sont séparées par une goulotte d'entrée (20) placée entre celles-ci, cependant qu'un ventilateur (17, 18) est placé dans chaque chambre pressurisée (11, 12), ventilateur dont l'entrée d'air débouche dans la goulotte d'entrée (20) pour envoyer de l'air qui se trouve dans l'entrepôt frigorifique sur les produits à réfrigérer ayant des besoins en air élevés sur des emplacements voisins (5).
  7. Entrepôt frigorifique selon la revendication 5 ou 6, caractérisé en ce que les sorties d'air (15, 16) sont conçues comme des plaques à buse (21) avec une multitude d'orifices de sortie (22), cependant que les orifices de sortie (21) sont placés répartis sur la surface de la plaque à buses respective (21).
  8. Entrepôt frigorifique selon l'une des revendications 5 à 7, caractérisé par un appareil de commande (23) pour le réglage individuel des temps de fonctionnement des deux ventilateurs (17, 18).
  9. Entrepôt frigorifique selon l'une des revendications 5 à 8, caractérisé en ce que les ventilateurs (17, 18) sont conçus comme des ventilateurs radiaux dont l'axe de rotation (A) passe perpendiculairement à la plaque de buses respective.
  10. Procédé pour exploiter un entrepôt frigorifique selon l'une des revendications précédentes avec lequel des produits à réfrigérer avec un besoin de refroidissement accru sont amenés, après avoir été introduits dans l'entrepôt frigorifique (4), à un emplacement qui se trouve à côté d'un autre emplacement (5) sur lequel un module soufflant mobile (10) sans groupe réfrigérant propre est déjà déposé ou sera ensuite déposé et qu'ensuite après avoir mis en marche le module soufflant mobile (10) de l'air qui se trouve dans l'entrepôt frigorifique est envoyé sur les produits à réfrigérer ayant des besoins en air élevés par le module soufflant mobile (10).
  11. Procédé pour exploiter un entrepôt frigorifique selon la revendication 10, caractérisé en ce qu'après un intervalle de temps prédéterminé ou après qu'une température cible ait été atteinte,
    les produits à réfrigérer sont déplacés sur l'emplacement (5) sur le côté opposé du module soufflant mobile (10) et que de l'air continue à y être envoyé ou
    que le module soufflant (10) est déplacé sur l'emplacement (5) sur le côté opposé des produits à réfrigérer et que de l'air continue alors à être envoyé sur les produits à réfrigérer à partir de l'autre côté ou
    que les positions des produits à réfrigérer et du module soufflant mobile (10) sont échangées et que de l'air est envoyé sur les produits à réfrigérer à partir de l'autre côté.
EP16155877.0A 2015-02-20 2016-02-16 Enceinte de stockage frigorifique et procede d'operation d'une telle enceinte Active EP3059528B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015102436.5A DE102015102436A1 (de) 2015-02-20 2015-02-20 Kühllager und Verfahren zum Betrieb eines solchen

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Publication Number Publication Date
EP3059528A1 EP3059528A1 (fr) 2016-08-24
EP3059528B1 true EP3059528B1 (fr) 2020-12-30

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CN113104457A (zh) * 2021-04-15 2021-07-13 杨建平 仓储货架
CN115218589B (zh) * 2022-09-20 2022-12-02 山西九牛牧业股份有限公司 一种奶制品仓储存放系统

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Publication number Priority date Publication date Assignee Title
US20130263614A1 (en) * 2011-03-29 2013-10-10 Daniel J. Tippmann Swing seal for a rack-aisle freezing and chilling system

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US2300475A (en) * 1939-04-24 1942-11-03 Edgar T Ward Ventilating device
US4265643A (en) * 1977-10-11 1981-05-05 Dawson Edward S Air purifier
JPS6039881U (ja) * 1983-08-27 1985-03-20 日本軽金属株式会社 冷蔵庫
CN1013990B (zh) * 1987-09-22 1991-09-18 三菱电机株式会社 空调机的送风控制装置
GB9411942D0 (en) * 1994-06-15 1994-08-03 Boc Group Plc A portable chilling unit
ITME20040005A1 (it) * 2004-05-03 2004-08-03 Domenico Brancato Di Francesco Procedimento perfezionato per incrementare e regolare la circolazione forzata di aria nelle celle frigorifere, mediante una apparecchiatura mobile agente in un corridoio tra due file di prodotti ortofrutticoli disposti in confezioni.
DE202005000167U1 (de) 2005-01-07 2005-05-25 PGH Ingenieurgesellschaft für technische Gebäudeausrüstung mbH Hochregallager mit integrierten Schnellkühlplätzen
DE202005002030U1 (de) * 2005-02-08 2005-04-14 Stolte, Ekkehard Anordnung zum Schnellklimatisieren sowie Ventilator mit Saugstutzen dafür
FR2939501B1 (fr) * 2008-12-09 2013-05-10 J F Cesbron Holding Soc Module de construction et tunnel de refroidissement forme par assemblage de tels modules
US9459037B2 (en) * 2013-03-12 2016-10-04 Hussmann Corporation Portable refrigeration unit for palletized product

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130263614A1 (en) * 2011-03-29 2013-10-10 Daniel J. Tippmann Swing seal for a rack-aisle freezing and chilling system

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EP3059528A1 (fr) 2016-08-24

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