EP3076106B1 - Unite de refroidissement - Google Patents

Unite de refroidissement Download PDF

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Publication number
EP3076106B1
EP3076106B1 EP16155198.1A EP16155198A EP3076106B1 EP 3076106 B1 EP3076106 B1 EP 3076106B1 EP 16155198 A EP16155198 A EP 16155198A EP 3076106 B1 EP3076106 B1 EP 3076106B1
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EP
European Patent Office
Prior art keywords
cooling
unit
cooling medium
insulation
cooling unit
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
EP16155198.1A
Other languages
German (de)
English (en)
Other versions
EP3076106A3 (fr
EP3076106A2 (fr
Inventor
Robert Brockmann
Benedikt Geitz
Gerd Odendahl
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.)
Viessmann Refrigeration Solutions GmbH
Original Assignee
Viessmann Refrigeration Solutions GmbH
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 Viessmann Refrigeration Solutions GmbH filed Critical Viessmann Refrigeration Solutions GmbH
Priority to PL16155198T priority Critical patent/PL3076106T3/pl
Publication of EP3076106A2 publication Critical patent/EP3076106A2/fr
Publication of EP3076106A3 publication Critical patent/EP3076106A3/fr
Application granted granted Critical
Publication of EP3076106B1 publication Critical patent/EP3076106B1/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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0439—Cases or cabinets of the open type
    • A47F3/0443—Cases or cabinets of the open type with forced air circulation
    • A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0478—Control or safety arrangements
    • 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
    • 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
    • F25D2201/00—Insulation
    • F25D2201/10—Insulation with respect to heat
    • F25D2201/12—Insulation with respect to heat using an insulating packing material
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/14—Refrigerator multi units
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/22—Cleaning means for refrigerating 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices

Definitions

  • the invention relates to a cooling unit, in particular for cooling food.
  • cooling units in the form of cooling shelves are known from the prior art, which are provided, for example, in supermarkets for cooling fresh food in the plus degree range, such as sausage or cheese.
  • the corresponding cooling medium supply lines or cooling medium discharge lines with the corresponding throttling devices are provided outside the cooling unit, so that heat can be extracted from it due to the heating of the coolant in the goods space to be cooled.
  • throttle elements for regulating the mass flow and thus also for extracting heat from the goods space to be cooled are provided.
  • the disadvantage of this technology is that moisture constantly condenses, in particular on the throttle elements, which as a result freeze up and impair their function or are completely unusable. Furthermore, the liquid condensate on the throttle elements, which are themselves designed to be insulation-free, and / or in the area around the throttle elements, which are also designed to be insulation-free due to the structural fixing measures between the cooling medium lines and the throttle element, are disadvantageous for the insulation connected to this insulation-free area, because the insulation is soaked in water like a sponge, which significantly accelerates pipe corrosion. In addition, the soaking of the cooling medium supply lines or cooling medium discharge lines always causes the loss of their intrinsic insulation. Due to the construction of known cooling units, as mentioned above, it is always necessary to provide insulation and / or insulation of the cooling medium lines.
  • the present invention is based on the object of providing a cooling unit, the control unit of which prevents the formation of ice on the throttling elements and / or of the insulation, known from the prior art, from being soaked through.
  • control unit is arranged within the cooling unit. This essentially has the advantage that a Icing is avoided as is the case with known throttle elements from the prior art.
  • the control unit of the present invention is thus designed to be permanently ice-free.
  • this arrangement is advantageous since the central cooling medium supply and / or discharge lines can be designed to be completely insulated by the control units within the cooling unit, without the insulating material being interrupted by the throttling elements, as in known cooling units.
  • control unit advantageously has an intrinsic temperature in the range from -20 ° C.
  • the temperature of the control unit is always the same as or higher than the temperature of the liquefied cooling medium and / or the expanded cooling medium.
  • a free space can be required between the control unit and the floor element, which has no relevant, in particular electronic, components of the cooling unit. This ensures that the condensate on the cooling medium lines or directly on the control unit itself can drip down in the direction of the floor element and thus advantageously known corrosion, rust formation and electronic damage due to water (condensate / ice) are completely avoided. This is particularly advantageous for the running time of the cooling unit as well as the significantly reduced maintenance intervals. This arrangement also turns out to be also more cost-effective, as fewer components are worn.
  • Another advantage of the floor element is that, in the event of maintenance, it is also suitable for collecting cooling medium and discharging the cooling medium via the drain, so that soiling of the cooling unit itself is avoided.
  • control unit is arranged within the cooling unit at least partially within an insulation unit.
  • This arrangement has the advantage that the control unit here is at least partially, advantageously completely, arranged within an insulation unit. This is particularly advantageous in order to isolate the control unit from the humidity of the room air, so that a way is also created to avoid condensation and ice formation.
  • the insulation unit is also advantageously formed from insulation material, for example from at least one polymer foam, more advantageously from expanded polypropylene or polystyrene, so that a temperature gradient between the internal volume of the insulation unit and the cooling unit itself results.
  • the internal volume of the insulation unit is advantageously heated to a higher temperature than the external environment. Consequently, the control unit is also designed to be free of ice and / or free of ice here.
  • control units described here are advantageous within a cooling unit, even more advantageously at least partially, most advantageously arranged in the goods space to be cooled of the cooling unit.
  • cooling unit is hydraulically optimally balanced.
  • the basis of the hydraulic balancing is a corresponding design of the cooling network using pipe network calculation programs.
  • the cooling capacity of the individual cooling units as well as the pressure losses of all components of the pipe network must be known.
  • the term cold supplier is advantageously to be understood as a device which conveys the cooling medium, for example a heat pump, the cooling medium or cooling carrier of which is selected as brine.
  • the control unit is designed as a pump arrangement.
  • the pump arrangement consists in the fact that it emits thermal energy during operation. This inherent heat prevents the pump arrangement itself from sweating or icing up.
  • Another advantage is that the dew point temperature is increased due to the self-heating in electrical control units, in particular by a pump arrangement. This means that due to the self-heating of the control unit, the temperature, in particular in the housing of the pump arrangement, is raised to a temperature so that no moisture can precipitate inside the housing of the pump. Consequently, during the operation of the pump arrangement, which also corresponds to the operation of the cooling unit, the temperature in and / or on the housing of the pump arrangement is always higher than the dew point temperature in the goods space to be cooled.
  • each cooling unit has proven to be advantageous in that it also enables pump arrangements with a lower output to be used.
  • This decentralized individual arrangement is also advantageous because it allows each cooling unit to be individually regulated, so that the cooling temperature of each cooling unit can be variably adjusted, for example, depending on the goods to be cooled.
  • the pump arrangement is designed in such a way that it advantageously permanently reduces the pressure loss of the heat extraction transmitter as well as the supply line or discharge line through which the cooling medium flows.
  • control unit advantageously the pump arrangement, in addition and / or alternatively in the ventilation flow of the heat exchanger of the cooling unit, so that the control unit is designed to be free of condensation water and / or ice at least during operation by means of the ventilation flow of the heat exchanger.
  • the possibility of keeping the pump arrangement free of condensate and / or ice by additionally insulating and / or insulating the control unit within the cooling unit.
  • This can be done, for example, with a simple insulation unit that encloses the control unit.
  • the insulation unit can only be designed to be temperature-insulating.
  • the pump arrangement is designed as a high-efficiency pump. This is advantageous because a regulated high-efficiency pump promotes a needs-based mass flow of the cooling medium and this enables a uniform, continuous flow rate of the cooling medium within the cooling unit with higher energy efficiency.
  • the design of the control unit as a pump arrangement is advantageous in that the pressure loss in the cooling medium network of a cooling unit can be significantly reduced.
  • the provision of a central cooling medium feed pump and throttling devices arranged as is known from the prior art means that a significantly higher feed pressure must be provided due to the requirement for an effective valve authority (P Veff ) in the cooling medium network with a central cooling medium feed pump. Consequently, for an effective valve authority of at least 0.4, the total pressure to be provided would have to be increased by 67% compared to a cooling medium network in which the mass flow per cooling unit is controlled by a pump arrangement.
  • control unit is designed as a control element, advantageously comprising several throttle elements and at least one pump arrangement.
  • throttling elements can be selected from the group consisting of 2-point valves, 2-way valves, 3-way valves and / or balancing valves.
  • the throttle element additionally and / or alternatively in the ventilation flow of the heat exchanger of the cooling unit, so that the throttle element is also free of condensation water and / or ice-free by means of the ventilation flow of the heat exchanger, at least during operation of the cooling unit.
  • control unit can advantageously be designed as a pump arrangement and / or also as a throttle element with a central cooling medium feed pump in the goods space to be cooled.
  • pump assemblies and / or throttle elements and / or combinations thereof are advantageously arranged within the goods space to be cooled, the throttle elements advantageously being selected from the group of 2-point valves, 2-way valves, 3-way valves and / or balancing valves.
  • the pump arrangement within each cooling unit more advantageously within each cooling space, has proven to be effective and reliable, since the pump arrangement always remains free of ice.
  • the cooling units described here also comprise at least one local control device which regulates and / or controls, for example, the delivery rate of the pump arrangement or the mass flow of the throttle element.
  • This control device can be integrated both in the pump arrangement and / or the throttle element and / or arranged separately in the cooling unit and / or outside the cooling unit.
  • the control device is advantageously designed in such a way that it controls the local control units within the cooling unit and, if necessary, also increases or reduces the delivery height of the central cooling medium delivery pump and / or decentralized pump arrangement.
  • control unit is designed to be controllable via at least one sensor element.
  • the control unit in particular the pump arrangement, can be individually controlled in order to carry out pressure compensation and / or temperature compensation.
  • the sensor element is advantageously designed as a measuring sensor and has at least one interface connected to the control unit, advantageously the pump arrangement, and / or the control device.
  • the interface is advantageously designed as a bus, even more advantageously than Modbus and / or as a PWM signal and / or as a 0 to 10 volt interface.
  • both sensor elements are advantageously connected to the control unit via an interface each. This can be done in a wired and / or wireless manner, for example via radio or RFID.
  • the data recorded by the sensor elements are transmitted wirelessly to the control unit and / or to the control device and processed there.
  • the regulating unit and / or the control device fetch the data recorded by the sensor elements from them at predeterminable time intervals for further processing.
  • the insulation unit comprises at least one first opening for leading the cooling medium supply line into the insulation unit and at least one further opening for leading the cooling medium discharge line out of the insulation unit, the insulation unit additionally comprising at least one condensate collecting channel.
  • the insulation unit advantageously spans a closed space around the control unit, so that the insulation effect of the insulation unit is used.
  • the insulation unit is designed as a parallelepiped, cube or also as a sphere.
  • this is not to be understood as limiting, so that any other polygonal shapes and bodies are also conceivable.
  • the insulation unit which is advantageously formed from at least one insulation material, comprises at least one condensate collecting channel.
  • this condensate collecting channel is designed as a recess, for example as an inclined channel, so that the condensate is collected in at least one collecting area of the insulation unit, advantageously at its bottom, and can consequently be easily removed.
  • the feed-through openings of the cooling medium supply and discharge lines are advantageously made moisture-tight and / or gas-tight with suitable sealing elements.
  • the condensate collecting channel also advantageously opens into the collecting area, which comprises a further opening within the wall of the insulation device.
  • a valve for example a solenoid valve
  • the solenoid valve is advantageously controlled as a function of the amount of condensate and / or the weight of the condensate.
  • Appropriate sensor elements are provided for this detection.
  • control flap and / or tilt flap which is then provided instead of the solenoid valve.
  • These two flaps can advantageously be controlled mechanically and / or electronically, so that the control flap and / or tilt flap are automatically opened and / or closed as a function of the amount of condensate and / or the weight of the condensate.
  • a further conveying device for example an additional pump
  • the pump is advantageously arranged within the insulation unit.
  • the suction device for example a pump
  • Both pumps are preset in such a way that, depending on the amount of condensate and / or the weight of the condensate, they provide the corresponding output directly and actively discharge the condensate from the insulation unit.
  • measuring sensors or other sensor elements could advantageously be located within the insulation unit, advantageously in and / or on the collecting area of the Insulation unit and / or be arranged on and / or in the condensate collecting channel.
  • the insulation unit and the insulation device can advantageously be used synonymously here. Furthermore, it has been shown that it is particularly advantageous to make the insulation unit from expanded polypropylene. This material is particularly light and can be produced in any shape.
  • the insulation unit is advantageously provided as a component of the cooling unit and can, for example, also be formed in one piece with it.
  • the control unit in a further, additional housing section within the cooling unit, this housing section being able to be provided as an alternative to or in addition to the insulation unit.
  • the housing section which is advantageously designed to be open downward in the direction of the base element, provides an additional fixation of the control unit.
  • the housing section also serves to reduce noise.
  • the housing section is advantageously arranged on the back wall of the cooling unit, for example screwed to it.
  • the housing section can also be designed as a screen so that, for example, it advantageously completely covers the control unit arranged on the back wall of the cooling unit spanned, wherein the screen can be designed, for example, plate-shaped or as a C-profile. This does not affect the function of the control unit.
  • each cooling unit advantageously further comprises at least one power supply.
  • control unit is advantageously firmly fixed to the cooling unit so that it is not damaged, for example, during transport.
  • control unit on the back wall, more advantageously in the lower third of the back wall of the cooling unit facing the cooling space. This is of advantage because it significantly reduces the influence of the turbulence in the air flow, which is generated by the control unit designed as a pump arrangement. If the control unit, more advantageously the pump arrangement, is arranged too high up in the cooling unit, this can have the disadvantage, especially in the case of open cooling units, that the cooling curtain is interrupted and unevenness in the cooling of the goods occurs.
  • the floor element is designed to be fixed or detachable as part of the stand structure. Is the floor element firmly attached to the cooling unit connected, this is of advantage, since this increases the stability of the entire cooling unit.
  • further components of the cooling unit such as fans or heat extraction exchangers, can be arranged here and / or on it through the base element.
  • the floor element is detachable with the cooling unit, it is advantageous if the floor element has a trough-like section, the opening of which is directed towards the interior of the cooling unit.
  • the condensate that forms on the lines or on the pump arrangement within the cooling unit can be easily and simply removed from the cooling unit.
  • the cooling unit is designed as a cooling space and / or cooling unit and / or as a cooling shelf. This is advantageous because the cooling unit described here can be used in many ways. Depending on the design, it is advantageous to design the cooling unit to be open, at least partially closed and / or also completely closed. For example, it is also conceivable that the cooling units described here are designed as a cooling space and / or as a mobile cooling container.
  • the cooling medium supply line which has a lower temperature than the cooling medium discharge line, is longer in its longitudinal extent within the cooling unit than the cooling medium discharge line for discharging the cooling medium out of the cooling unit.
  • the cooling unit is designed as a cooling module unit.
  • This is advantageously to be understood as a modular unit, so that, depending on the local circumstances, a plurality of such modular cooling units can be designed to be coupled to one another in series or in parallel. Consequently, it is advantageous to provide several of the cooling units described here, which are designed even more advantageously as cooling module units, connected to one another.
  • the advantage of the cooling module units here is that each unit can be controlled and / or activated separately and each comprise at least one control unit of its own, in particular a pump arrangement.
  • the cooling module units are consequently both jointly controllable and / or regulatable and / or controllable as well as individually controllable and / or regulatable and / or controllable separately from one another, so that, for example, if several cooling module units are connected in series, each Cooling module unit can have a different cooling temperature, for example. For example, the requirements of the food to be cooled can be met in a simple manner while saving energy.
  • cooling units described here advantageously furthermore each comprise a power supply unit and / or a control unit. This ensures, for example, that even if a single cooling module fails, the functionality of the other cooling units is still guaranteed and the entire system does not have to be switched off for maintenance or replacement of spare parts.
  • the cooling units advantageously the cooling module units, each have at least one coupling element for rapid assembly.
  • the coupling element can be designed, for example, as a latching connection and / or clip connection and / or bayonet connection.
  • any number of cooling units can be connected to one another quickly and easily are arranged in that two cooling units come into operative connection with one another via the corresponding coupling elements, so that the cooling medium network is expanded to include a cooling unit, the cooling medium networks being designed to be differently controllable and / or controllable and / or controllable, in particular by the respectively provided pump arrangement .
  • the present invention discloses a cooling system with at least two cooling module units according to at least one of the aforementioned features, their cooling medium networks via coupling elements are in medium-tight connection with each other. It has also proven advantageous here that the coupling elements furthermore have at least one sealing element, so that the leakage of cooling medium is prevented. Depending on the design, it is advantageous that the coolant feed lines and coolant discharge lines extend in and / or on the cooling unit in such a way that a simple connection of two cooling units arranged adjacent to one another can take place.
  • the cooling system resulting from the coupling of the individual cooling units comprises a line network which can be used to cool goods rooms, for example refrigerated shelves in supermarkets.
  • a line network which can be used to cool goods rooms, for example refrigerated shelves in supermarkets.
  • the higher-level line network of the cooling system which consists of the central cooling medium supply and discharge lines, which run to and from the individual cooling units, does not have any control units, more advantageous control element-free, designed so that in particular no control elements for regulating the mass flow of the cooling medium are installed.
  • This essentially has the advantage that icing is avoided as in the case of known arrangements from the prior art, so that the control unit of the present invention is designed to be permanently free of ice. Furthermore, this effectively prevents the control unit from losing its functionality due to icing.
  • a central pump arrangement with local throttling elements is provided within each cooling unit. It has proven to be advantageous here if the central pump arrangement is also arranged within the goods space to be cooled.
  • Another arrangement of the invention is a variant in which the central pump arrangement is part of the refrigeration unit.
  • the central pump arrangement is part of the refrigeration unit.
  • cooling units and cooling module units described here are advantageously part of a refrigeration circuit in which the transport of the cooling medium designed as a refrigerant is controlled via at least one heat pump, in particular a brine pump.
  • the formulations cooling medium and refrigerant can be used synonymously.
  • FIG. 11 shows a cooling unit 1 which comprises a space W to be cooled.
  • the characteristic of the room W to be cooled is that the room is delimited by a ceiling element 2, a back wall 4 and a floor element 6.
  • the ceiling element 2 closes off the goods space W to be cooled at the top.
  • the bottom element 6 delimits the cooling unit 1 at the bottom, with the waste water being able to be discharged from the goods space to be cooled via openings in the bottom element.
  • Stand elements 8 can advantageously be provided on the floor element 6, which can be adjusted as a function of the local conditions. In the simplest case, the stand elements 8 are provided as stand feet which are designed to be adjustable in height.
  • the cooling unit 1 shown here in this embodiment further comprises vertical struts 10 which are provided for the additional stabilization of the back wall 4 and which also support the ceiling element 2.
  • these struts 10 serve to hold storage shelves for the food to be cooled (not shown).
  • a line section 12 is shown schematically as an example on the outside surface of the ceiling element 2.
  • the line section 12 represents a part of the cooling medium supply line 16.
  • the line section 12 extends in the longitudinal direction of the cooling unit 1 and can comprise coupling elements (not shown) or also closing elements (not shown) at the respective ends E, depending on whether further cooling units intended for connection to it are.
  • the cooling units 1 are supplied with cooling medium via the line sections 12.
  • a unit in the room W to be cooled via which heat is extracted from the room W to be cooled.
  • Part of this unit is i.a. a heat exchanger 34 or a heat exchanger 20, a control device 24 and sensor elements (not shown).
  • a cooling medium is supplied to the space W to be cooled via a line section 12.
  • the pump arrangement 14 of the cooling unit 1 conveys the cooling medium within the cooling unit 1, so that the cooling medium flows via the heat exchanger 34 into the line section 13 and is discharged again from the cooling unit 1 via this.
  • Both line sections are advantageously part of the central line network of a cooling system 22.
  • the cooling system 22 also includes at least one cold generator, for example a brine heat pump (not shown).
  • the delivery pressure of the pump arrangement is such that the pressure loss of the respective line section 12 and 13 and of the heat exchanger 34 can be overcome.
  • sensor elements (not shown) allow the cooling capacity to be determined of each cooling unit 1.
  • An advantageous variant of the needs determination is the detection of the temperature in the room to be cooled W. Increases z. B. this temperature in the room to be cooled W, the mass flow of the cooling medium is increased by the control unit 14, 15. If the temperature in the room W to be cooled falls, the mass flow of the cooling medium is reduced.
  • the line section 13 of the cooling medium discharge line 18 advantageously runs parallel to the line section 12. This is not to be understood as limiting here, so that it is also conceivable that the two line sections 12, 13 extend within the cooling unit in its longitudinal direction, for example along the back wall 4
  • the arrangement of the two line sections 12, 13 or their diameter can be freely selected and can either already be fixed in terms of production technology or, depending on the local conditions, also be determined on the construction site.
  • the cooling medium is supplied to the cooling unit 1 near the floor through the floor element 6, whereas it is discharged at the opposite end of the cooling unit 1 via the ceiling element 2.
  • the regulating device 14 is designed here as a pump arrangement, for example as a high-efficiency pump, which regulates and / or controls and / or controls the cooling medium pressure and / or the cooling medium temperature.
  • the control unit 14 is connected to the cooling medium supply line 16.
  • the cooling medium supply line 16 in turn opens after the pump arrangement 14 into a heat exchanger 34, which is advantageously designed as a brine heat exchanger 20.
  • the illustrated cooling unit 1 comprises several subsections, only one pump arrangement 14 being provided.
  • the cooling medium supply line 16 extends in the longitudinal direction of the cooling unit 1.
  • the heat exchanger 34; 20 is connected to the cooling medium discharge line 18. It is also characterized in that the cooling medium supply line 16 is connected to the line section 12 and the cooling medium discharge line 18 is connected to the line section 13 or is formed in one piece therewith.
  • the cooling medium flows into the cooling unit 1 in the direction of the arrow Z and out of the cooling unit 1 again in the direction of the arrow.
  • the cooling medium supply line 16 with the pump arrangement 14 is advantageously placed in the longitudinal extension of the cooling unit 1 in front of the heat exchanger 20 of the cooling space W. This is advantageous because the constant flow around the control unit 14, 15 prevents it from sweating and / or icing up. The reason for this is that the air that flows over the heat exchanger 34; 20 can absorb significantly more moisture than air that does not flow.
  • the cooling unit 1 described here can of course also have known components (not shown here) and is connected to the cooling circuit and / or the central line network of a cold generator, such as, for example, by the superordinate line sections 12, 13. B. be connected to a heat pump.
  • Fig. 2 shows a section of two cooling units 1 which are coupled to one another and which are connected to one another via a coupling element 32 are connected.
  • the same reference numbers as before correspond to the same components and are not explained again here.
  • the coupling element 32 forms an operative connection between the two cooling units 1.
  • the two line sections 12 of each cooling unit 1, which are arranged adjacent to one another, are advantageously connected to one another in a cool-medium-tight connection via coupling elements 32, for example T-pieces made of plastic or metal.
  • the course of the cooling medium supply / discharge lines 16, 18 is only indicated schematically here and can be determined as a function of the actual local conditions.
  • the cooling medium supply line 16 is made longer in its longitudinal extent within the cooling unit 1 than the cooling medium discharge line 18. This is made significantly shorter in comparison.
  • the ratio of the cooling medium supply line 16 to the length of the cooling medium discharge line 18 is advantageously designed in a ratio of 5: 1 to 1.1: 1.
  • the cooling unit 1 described here can of course also have known components (not shown here) and is connected to the cooling circuit of the heat pump (not shown) by the superordinate line sections 12, 13.
  • FIG. 3 a further embodiment is shown.
  • three cooling units 1 arranged at a distance from one another form a cooling system 22.
  • the same reference numbers as before correspond to the same components and are not explained again here.
  • Each of the cooling units 1 comprises both a cooling medium supply and discharge line 16, 18, as well as a pump arrangement 14 and also a control device 24.
  • the medium lines 16, 18 with the central line sections 12, 13 do not have any control units connected.
  • the line sections 12, 13 in turn form the line network with a cold generator, for. B. a heat pump 11, from.
  • Each cooling unit 1 comprises an internal cooling medium network and a control device 24, which advantageously regulates and / or controls the output of the pump arrangement 14.
  • the cooling medium entering the cooling unit 1 first flows through the pump arrangement 14 in order to then be transferred to the heat exchanger 20. After flowing through the heat exchanger 20, the cooling medium is transported via the cooling medium discharge line 18 to the line section 13 and exits the cooling unit 1 again.
  • Fig. 4 a modification is shown, where the same reference numerals as above correspond to the same components.
  • the cooling unit 1 shown here also includes power electronics 14a.
  • shut-off valves 25 are also provided within the cooling unit 1, which control the cooling medium flow.
  • Fig. 5 differs from this in that, in addition, throttle elements 15, e.g. B. throttle bodies are provided with associated power electronics 15a.
  • the power electronics 15a are advantageously designed as a servomotor.
  • the servomotor which is assigned to each throttle element 15, is responsible for adjusting the throttle element 15, for example in order to adjust the coolant flow.
  • Fig. 6 corresponds to the structure Fig. 3
  • throttle element 15 are arranged in each cooling unit 1. These are used to fine-tune requirements.
  • the cooling system 22 shown also comprises a single pump arrangement 14 which is arranged within a cooling unit.
  • FIG. 7 Another embodiment is shown with throttle elements 15, the pump arrangement 14 being arranged here within the heat pump. This is also advantageous in order to keep the pump arrangement free of ice and / or free of condensate.
  • FIG. 11 shows a schematic side view of a cooling unit 1, the same reference numerals as in FIG Fig. 1 correspond to the same components and are not explained again here.
  • the bottom element 6 is here trough-shaped in the front area, advantageously opposite the back wall 4.
  • the recess serves as a condensate trap and / or as a coolant trap for maintenance work.
  • the rear wall 4 is also conceivable to form the rear wall 4 from different materials so that, for example, an upper
  • the rear wall section 4a has a different insulation property than the lower rear wall section 4b.
  • the arrangement of the regulating element 14, advantageously a high-efficiency pump, has proven to be advantageous in the lower third of the cooling unit 1 due to the control of the regulating and / or monitoring function.
  • the two cooling medium lines 16, 18 run within the cooling unit 14 and only connect the outside of the ceiling element 2 to the line sections 12, 13 in a medium-tight connection. This ensures that the continuous flow of cooling medium between the cooling units 1 is ensured within the entire cooling system 22, which comprises a plurality of cooling units 1.
  • the in Figure 8a The cooling unit 1 shown still has storage shelves 26 and an exit area 30 from which the cold air flow exits like a curtain and falls downwards following gravity.
  • FIG 8b , c show further exemplary embodiments of the cooling unit 1, the cooling medium lines 12 and 13 being integral components of the cooling space. This means that the line sections 12 and 13 are introduced into the insulation or the insulation of the rear wall 4 or of the ceiling element 2.
  • Fig. 9 finally shows yet another embodiment.
  • the cooling units 1 are designed as cooling spaces.
  • the arrangements of the individual components within the refrigeration rooms are different from the example refrigeration units listed above.
  • Each cooling unit, here each cooling space comprises, in addition to a pump arrangement 14 and a control device 24, also at least one sensor element 38, advantageously for temperature detection. Also the one shown here
  • the cooling system 22 is connected to a heat pump 11 via the line network.
  • cooling unit 1 is designed as a cooling unit module which can be arranged individually and / or in combination with further cooling module units 1.
  • several cooling units 1 form components of a cooling system 22.
  • the same reference numerals as in the previous figures correspond to the same components and are not explained again here.
  • the embodiment of the cooling unit 1 shown here comprises an insulation unit 36 which is arranged on the upper side of the cooling unit 1.
  • This arrangement can be fixed and / or detachable, so that the insulation unit 36 can also be exchanged easily.
  • the insulation unit 36 is firmly connected to the ceiling element 2.
  • the pump arrangement 14 is arranged within the insulation unit 36, which is advantageously formed from insulation material 40, more advantageously from at least one polymer foam, even more advantageously from at least one expanded polypropylene.
  • the pump arrangement 14 is in the flow direction of the cooling medium a shut-off valve 25 arranged upstream. This regulates the flow of the cooling medium and can also completely prevent it, for example during repairs or transport.
  • Another shut-off valve 25 is also arranged in the insulation unit 36 in the outflow direction of the cooling medium.
  • connection of the insulation unit 36 with the cooling unit 1 in that both components have a common opening 42.
  • the opening 42 can advantageously be designed as a connection between the interior volume of the insulation unit 36 and the interior of the cooling unit 1. In this case, possible condensate can flow directly out of the insulation unit 36 via its inclined bottom surface 44 and be removed via the cooling unit 1.
  • the condensate collecting channel comprises a little one depression, which is advantageously designed as a groove in which the condensate collects.
  • the opening is designed to be reversibly closable with a closure cap, for example with a solenoid valve, a tilting flap or a control flap (not shown) so that the flap opens automatically depending on the amount of condensate and / or the weight of the condensate to allow the condensate to flow off and then automatically close and seal again.
  • the condensate is discharged to the cooling medium lines in an offset manner in order to prevent them from corroding avoid.
  • the cooling medium lines in the inlet and / or outlet area on the insulation unit 36 are provided with sealing elements (not shown) which close them off in a liquid-tight and / or gas-tight manner.
  • the condensate collecting channel and / or the inclined floor area 44 can advantageously be formed from a further material, for example from a water-resistant and / or water-repellent organic and / or inorganic coating, for example from at least one polymer, at least one block copolymer, at least one surfactant, at least one sol or at least one sol-gel composition and / or a mixture thereof.
  • the organic coating can also advantageously comprise at least one halogen, for example fluorine.
  • the at least one coating material is advantageously hydrophobic, more advantageously superhydrophobic, so that on the one hand a large contact angle of greater than and / or equal to 90 ° is established and consequently only small wetting areas are formed between the condensate and the coating material.

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  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Air Conditioning Control Device (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Beans For Foods Or Fodder (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Other Air-Conditioning Systems (AREA)

Claims (6)

  1. Unité de refroidissement (1), en particulier destinée au refroidissement de produits alimentaires, comprenant au moins
    a. une enceinte pour produits (W) et des éléments de délimitation enserrant au moins partiellement l'enceinte pour produits (W), lesquels comprennent au moins un élément de plafond (2), au moins une paroi arrière (4) ainsi qu'au moins un élément de plancher (6),
    b. au moins une conduite d'admission de fluide de refroidissement (16) pour acheminer un fluide de refroidissement jusque dans l'unité de refroidissement (1) et au moins une conduite d'évacuation de fluide de refroidissement (18) agencée séparément de la conduite d'admission de fluide de refroidissement (16) pour évacuer le fluide de refroidissement hors de l'unité de refroidissement (1) afin de former un réseau de fluide de refroidissement à l'intérieur de l'unité de refroidissement (1),
    c. au moins une unité de régulation (14 ; 15) pour réguler la température et/ou la pression du fluide de refroidissement passant au moins partiellement à travers l'unité de refroidissement,
    une unité d'isolation (36),
    dans laquelle l'unité d'isolation (36) comprend au moins une première ouverture pour conduire la conduite d'admission de fluide de refroidissement (16) jusque dans l'unité d'isolation (36) et au moins une autre ouverture pour conduire la conduite d'évacuation de fluide de refroidissement (18) hors de l'unité d'isolation (36),
    dans laquelle l'unité de régulation est conçue en tant qu'agencement de pompe (14),
    caractérisée en ce que
    l'unité de régulation (14 ; 15) est agencée à l'intérieur de l'unité de refroidissement (1), dans laquelle l'unité de régulation (14 ; 15) à l'intérieur de l'unité de refroidissement (1) est agencée au moins partiellement à l'intérieur de l'unité d'isolation (36) et dans laquelle l'unité d'isolation comprend en outre au moins un canal collecteur de condensat.
  2. Unité de refroidissement selon la revendication 1,
    caractérisée en ce que
    l'agencement de pompe (14) est conçu en tant que pompe à haute efficacité, de préférence à vitesse variable.
  3. Unité de refroidissement selon la revendication 1,
    caractérisée en ce que
    l'agencement de pompe (14) est agencé dans une section de boîtier à l'intérieur de l'unité de refroidissement (1).
  4. Unité de refroidissement selon la revendication 1,
    caractérisée en ce que
    celle-ci présente respectivement un élément de couplage (32) pour un montage rapide.
  5. Unité de refroidissement selon au moins l'une des revendications précédentes,
    caractérisée en ce que
    l'unité de refroidissement (1) est conçue en tant qu'enceinte de refroidissement et/ou meuble de refroidissement et/ou rayonnement de refroidissement.
  6. Installation de refroidissement (22) avec, au moins partiellement agencées côte à côte, au moins deux unités modulaires de refroidissement (1) selon au moins l'une des revendications précédentes, dans laquelle les unités modulaires de refroidissement (1) sont conçues de façon à être reliées ensemble et étanches au fluide de refroidissement, dans laquelle, à un niveau supérieur, est conçu indépendamment de l'unité de régulation un réseau de conduites de l'installation de refroidissement, lequel est composé des conduites d'admission et d'évacuation de fluide de refroidissement centrales (12 ; 13), lesquelles se déroulent vers ou depuis les unités de refroidissement (1) individuelles.
EP16155198.1A 2015-03-30 2016-02-11 Unite de refroidissement Active EP3076106B1 (fr)

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EP3076106A3 EP3076106A3 (fr) 2016-11-23
EP3076106B1 true EP3076106B1 (fr) 2020-12-02

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EP (1) EP3076106B1 (fr)
DE (5) DE102015117848A1 (fr)
DK (5) DK3076109T3 (fr)
ES (4) ES2856854T3 (fr)
PL (1) PL3076106T3 (fr)
PT (1) PT3076110T (fr)

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DE102017123705A1 (de) * 2017-10-12 2019-04-18 Viessmann Werke Gmbh & Co Kg Kühlmöbel mit integrierter hydraulischer Regelung und Kühlsystem
DE102018115423B4 (de) 2018-06-27 2021-10-21 Viessmann Werke Gmbh & Co Kg Fluidsystem
DE102022101450A1 (de) 2022-01-21 2023-07-27 Dürr Systems Ag Wärmeversorgungsnetz für eine prozessanlage und verfahren zum betreiben eines solchen wärmeversorgungsnetzes

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Also Published As

Publication number Publication date
DK3076109T3 (da) 2021-10-04
DK3076106T3 (da) 2021-03-01
DK3076108T3 (da) 2021-02-01
DE102015117850A1 (de) 2016-10-06
ES2841347T3 (es) 2021-07-08
ES2856854T3 (es) 2021-09-28
DE102015117851A1 (de) 2016-10-06
ES2856411T3 (es) 2021-09-27
DK3076111T3 (da) 2021-03-08
DK3076110T3 (da) 2019-06-03
DE102015117851B4 (de) 2022-07-28
EP3076106A3 (fr) 2016-11-23
ES2726876T3 (es) 2019-10-10
EP3076106A2 (fr) 2016-10-05
DE102015117848A1 (de) 2016-10-06
PL3076106T3 (pl) 2021-08-23
DE102015117948B4 (de) 2023-06-29
PT3076110T (pt) 2019-06-06
DE102015117948A1 (de) 2016-10-06
DE102015119362A1 (de) 2016-10-06

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