EP4551873A1 - Kühlgerät für die schaltschrankklimatisierung sowie eine entsprechende schaltschrankanordnung - Google Patents
Kühlgerät für die schaltschrankklimatisierung sowie eine entsprechende schaltschrankanordnungInfo
- Publication number
- EP4551873A1 EP4551873A1 EP23734455.1A EP23734455A EP4551873A1 EP 4551873 A1 EP4551873 A1 EP 4551873A1 EP 23734455 A EP23734455 A EP 23734455A EP 4551873 A1 EP4551873 A1 EP 4551873A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- cooling device
- air
- control cabinet
- evaporator
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
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- 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
- F25B2400/00—Component parts or details not otherwise provided for in this subclass
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
Definitions
- Cooling device for control cabinet air conditioning and a corresponding control cabinet arrangement
- the invention is based on a cooling device for control cabinet air conditioning and a corresponding control cabinet arrangement, the cooling device having a primary circuit containing a flammable refrigerant with a condenser which is arranged in an external air circuit of the cooling device.
- the cooling device also has an evaporator in an inner air circuit that is merely separated from the outer air circuit.
- the inner air circuit can have an air inflow opening and an air outflow opening, which are opened into the interior of a control cabinet housing.
- the outer air circuit can be open with its air inlet and its air outlet to the surroundings of the cooling device or the control cabinet arrangement.
- the external air circuit can therefore have ambient air flowing through it and can also have a fan.
- the air flowing through the outer circuit can act on the condenser, which is designed, for example, as an air-liquid heat exchanger.
- the air circulated through the inner air circuit can act on an evaporator arranged in the inner air circuit.
- the evaporator can be designed as an air-liquid heat exchanger.
- Such a cooling device is known from DE 10 2018 109 604 Ai.
- control cabinet arrangements known from the prior art have the disadvantage that they are comparatively complex to implement, since, for example, various, actively driven closing elements are required and are activated when a leak is detected and/or when a flammable refrigerant enters the interior of the control cabinet must, for example, create a partition between the internal circuit of the The cooling device and the interior of the control cabinet must be closed so that no (further) refrigerant can get into the interior of the control cabinet.
- the cooling device is provided with a secondary circuit having a non-combustible refrigerant, which has the evaporator and a liquid-liquid heat exchanger which is arranged in the outer air circuit and with which heat is transferred from the non-combustible refrigerant to the combustible refrigerant.
- the cooling circuit of the cooling device By separating the cooling circuit of the cooling device into a primary circuit and a secondary circuit, of which the secondary circuit has a non-burning refrigerant, it is ensured, even in the event of a leak in one of the two refrigerant circuits, that no flammable refrigerant can get into the inner air circuit and thus into the interior of a control cabinet housing.
- the liquid-liquid heat exchanger can be a condenser of the secondary circuit and an evaporator of the primary circuit.
- the liquid-liquid heat exchanger can be designed as a plate heat exchanger.
- the primary circuit can be designed as an active compressor refrigeration circuit with a compressor and an explosion element.
- the primary circuit can be arranged fluidly separated from the internal air circuit in the cooling device.
- the primary circuit can be completely ventilated to the surroundings of the cooling device.
- the primary circuit can be arranged completely in the outer air circuit.
- the secondary circuit can be a passive refrigerant circuit, preferably a refrigerant circuit in natural circulation, driven by a geodetic height difference.
- the secondary circuit can, for example, be designed as a heat pipe or have a heat pipe.
- the non-flammable refrigerant can be or have, for example, carbon dioxide.
- the cooling device can also have a tertiary circuit, in which the condenser of the primary circuit is the condenser of the tertiary circuit and the evaporator of the secondary circuit is the evaporator of the tertiary circuit.
- the condenser of the primary circuit and/or the tertiary circuit can be a two-circuit air-liquid heat exchanger with two liquid-carrying lines that are fluidically separated from one another.
- the evaporator of the secondary circuit and the tertiary circuit can be a two-circuit air-liquid heat exchanger with two liquid-carrying lines that are fluidically separated from one another.
- the tertiary circuit can have or be a non-flammable refrigerant, for example carbon dioxide.
- the tertiary circuit can be a passive refrigerant circuit, preferably a refrigerant circuit in natural circulation, driven by a geodetic height difference, and the tertiary circuit can be or have, for example, a heat pipe.
- a fan can be arranged in the outer air circuit and in the inner air circuit. With the fan in the outer circuit, the condenser can be supplied with the air conveyed through the outer air circuit. With the fan in the inner circuit, the evaporator can be supplied with the air conveyed through the inner air circuit.
- a control cabinet arrangement with a control cabinet housing and a cooling device of the type described above, ambient air of the control cabinet arrangement is conveyed through the outer air circuit and air received in an interior of the control cabinet housing is conveyed through the inner air circuit.
- the inner air circuit and the outer air circuit can be fluidly separated from one another, so that no air exchange can take place between the outer air circuit and the inner air circuit. Exemplary embodiments of the invention are explained using the figures below. This shows:
- Figure 1 shows a schematic cross-sectional view of a control cabinet arrangement
- FIG. 2 is a block diagram of a cooling device according to the invention.
- Figure i shows an exemplary embodiment of a control cabinet arrangement 100 with a control cabinet housing 200 and a cooling device 1 mounted thereon in a side part.
- Heat-emitting and possibly arc-generating components 300 are arranged in the control cabinet housing 200, on which a component 300 accumulates in the interior 13 of the control cabinet housing 200 , flammable refrigerant can ignite, for example from an arc that is generated during a switching process of a switching device 300.
- the cooling device 1 has an internal air circuit 10, through which the air received in the interior 13 of the control cabinet housing 200 is transported using a fan 12. While the heated air is introduced into the inner air circuit 10 in an upper region of the control cabinet housing 200, it flows out of the inner circuit 10 in a lower region of the control cabinet housing 200 and back into the interior 13 of the control cabinet housing 200. On its way through the inner air circuit 10 it is acted upon the air has an evaporator 5, which in the present case is designed as an air-liquid heat exchanger of a compressor circuit, whereby the air cools down.
- the cooling device 1 has a condenser 3, which is acted upon by the ambient air of the control cabinet arrangement 100 flowing through the external air circuit 4 and is also designed as an air-liquid heat exchanger.
- the evaporator 5 in the inner air circuit 1 is not fluidly connected to the condenser 3 in the outer air circuit 4 via a common refrigerant circuit. Instead, a primary circuit 2, which has the condenser 3, and a secondary circuit 6, which has the evaporator 5, are provided, which in turn are thermally coupled to one another via a liquid-liquid heat exchanger 7, fluidly separated from one another.
- the horizontal dashed line represents the airtight separation between the outer air circuit 4 or the surroundings of the control cabinet arrangement and the inner air circuit 10 or the interior 13 of the control cabinet housing.
- a primary circuit 2 which acts as a compressor circuit with a compressor 8 and an expansion element 9 is designed, completely arranged.
- the primary circuit 2 can therefore have a flammable refrigerant, since even in the event of a leak, due to the separation between the inner air circuit 10 and the outer air circuit 4, no flammable refrigerant can enter the inner air circuit 10 or into the interior 13 of the control cabinet housing 200 with the components 300 accommodated therein.
- the primary circuit 2 has, in the manner known from the prior art, an air-liquid heat exchanger which is supplied with air by a fan 12 and has the function of a condenser.
- the evaporator of the primary circuit 2 is a liquid-liquid heat exchanger 7, for example a plate heat exchanger, via which the primary circuit 2 is thermally coupled to a secondary circuit 6.
- the secondary circuit 6 has a further air-liquid heat exchanger 5, which is also acted upon by a fan 12 with air which is passed through the internal air circuit 10.
- the secondary circuit 6 is filled with a non-flammable refrigerant, so that in the event of a leak, refrigerant escaping into the interior 13 cannot be ignited by an arc of the components 300.
- the liquid-liquid heat exchanger 7 forms a condenser.
- the condenser 3 and the evaporator 5 are each designed with two circuits, with one of the two circuits of the condenser 3 and the evaporator 5 forming a tertiary circuit.
- Both the tertiary circuit 11 and the secondary circuit 6 can preferably be designed as a refrigerant circuit in natural circulation, which is driven by a geodetic height difference.
- the secondary circuit 6 and/or the tertiary circuit 11 can be designed as a heat pipe.
- Control cabinet arrangement Control cabinet housing components
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Patch Boards (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022116777.1A DE102022116777B3 (de) | 2022-07-05 | 2022-07-05 | Kühlgerät für die Schaltschrankklimatisierung sowie eine entsprechende Schaltschrankanordnung |
| PCT/DE2023/100454 WO2024008230A1 (de) | 2022-07-05 | 2023-06-16 | Kühlgerät für die schaltschrankklimatisierung sowie eine entsprechende schaltschrankanordnung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4551873A1 true EP4551873A1 (de) | 2025-05-14 |
Family
ID=87036329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23734455.1A Pending EP4551873A1 (de) | 2022-07-05 | 2023-06-16 | Kühlgerät für die schaltschrankklimatisierung sowie eine entsprechende schaltschrankanordnung |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP4551873A1 (de) |
| JP (1) | JP2025523499A (de) |
| CN (1) | CN119365738B (de) |
| DE (1) | DE102022116777B3 (de) |
| MX (1) | MX2024016057A (de) |
| TW (1) | TWI899583B (de) |
| WO (1) | WO2024008230A1 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032654A1 (de) * | 2012-08-31 | 2014-03-06 | Rittal Gmbh & Co. Kg | Wärmetauscher für die schaltschrankkühlung und eine entsprechende kühlanordnung |
| EP3723461A1 (de) * | 2019-04-09 | 2020-10-14 | Pfannenberg GmbH | Kühlsystem und verfahren zum kühlen eines elektronikschrankes |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4413128C2 (de) * | 1994-04-19 | 1997-12-18 | Loh Kg Rittal Werk | Kühlgerät |
| JP2005055079A (ja) * | 2003-08-05 | 2005-03-03 | Hachiyo Engneering Kk | サーモサイフォンサイクルシステム |
| AT500881B1 (de) * | 2004-09-17 | 2007-05-15 | Mittermayr Karl | Zwischenwärmetauscher und wärmepumpen und kälteanlagen |
| AU2005307325B2 (en) * | 2004-11-22 | 2010-02-11 | Asahi Glass Company, Limited | Secondary circulation cooling system |
| JP2007046810A (ja) * | 2005-08-08 | 2007-02-22 | Sanden Corp | ブライン式冷却システム |
| JP5405015B2 (ja) * | 2007-12-19 | 2014-02-05 | ホシザキ電機株式会社 | 冷却装置 |
| ES2930639T3 (es) * | 2011-09-30 | 2022-12-20 | Carrier Corp | Sistema de refrigeración de alta eficiencia |
| US11839062B2 (en) * | 2016-08-02 | 2023-12-05 | Munters Corporation | Active/passive cooling system |
| US11255611B2 (en) * | 2016-08-02 | 2022-02-22 | Munters Corporation | Active/passive cooling system |
| DE102017201186A1 (de) * | 2017-01-25 | 2018-07-26 | Siemens Aktiengesellschaft | Fahrzeug mit einer zweistufigen Kälteanlage |
| EP3479903B1 (de) | 2017-11-06 | 2020-09-16 | Sigma Laborzentrifugen GmbH | Zentrifuge |
| DE102018109604B4 (de) * | 2018-04-20 | 2019-10-31 | Rittal Gmbh & Co. Kg | Schaltschrankanordnung mit Sicherheitsfunktion sowie ein entsprechendes Verfahren |
| JP7129372B2 (ja) * | 2019-04-05 | 2022-09-01 | フクシマガリレイ株式会社 | 冷蔵装置 |
| CN112020267A (zh) * | 2019-05-30 | 2020-12-01 | 浙江省化工研究院有限公司 | 一种环保型热管工质 |
| CN111271146A (zh) * | 2020-02-06 | 2020-06-12 | 上海朝临动力科技有限公司 | 超临界co2布雷顿循环发电系统及其工作方法 |
| CN111197875A (zh) * | 2020-03-06 | 2020-05-26 | 吉风环境科技(江苏)有限公司 | 一种分体式co2空气源热泵机组 |
| DE102020114555A1 (de) * | 2020-05-29 | 2021-12-02 | Konvekta Aktiengesellschaft | Verbessertes Kühl- und Heizgerät für ein Fahrzeug sowie System und Fahrzeug damit und Verfahren dazu |
-
2022
- 2022-07-05 DE DE102022116777.1A patent/DE102022116777B3/de active Active
-
2023
- 2023-06-16 WO PCT/DE2023/100454 patent/WO2024008230A1/de not_active Ceased
- 2023-06-16 EP EP23734455.1A patent/EP4551873A1/de active Pending
- 2023-06-16 CN CN202380047278.1A patent/CN119365738B/zh active Active
- 2023-06-16 JP JP2024575376A patent/JP2025523499A/ja active Pending
- 2023-06-28 TW TW112124157A patent/TWI899583B/zh active
-
2024
- 2024-12-18 MX MX2024016057A patent/MX2024016057A/es unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032654A1 (de) * | 2012-08-31 | 2014-03-06 | Rittal Gmbh & Co. Kg | Wärmetauscher für die schaltschrankkühlung und eine entsprechende kühlanordnung |
| EP3723461A1 (de) * | 2019-04-09 | 2020-10-14 | Pfannenberg GmbH | Kühlsystem und verfahren zum kühlen eines elektronikschrankes |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2024008230A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119365738A (zh) | 2025-01-24 |
| TW202403251A (zh) | 2024-01-16 |
| CN119365738B (zh) | 2025-10-03 |
| TWI899583B (zh) | 2025-10-01 |
| JP2025523499A (ja) | 2025-07-23 |
| DE102022116777B3 (de) | 2023-10-26 |
| MX2024016057A (es) | 2025-02-10 |
| WO2024008230A1 (de) | 2024-01-11 |
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