EP1229293A1 - Verflüssiger eines Kältekreislaufes, insbesondere für Kühlschränke, Gefriergeräte oder dergleichen Haushaltgeräte - Google Patents
Verflüssiger eines Kältekreislaufes, insbesondere für Kühlschränke, Gefriergeräte oder dergleichen Haushaltgeräte Download PDFInfo
- Publication number
- EP1229293A1 EP1229293A1 EP02000283A EP02000283A EP1229293A1 EP 1229293 A1 EP1229293 A1 EP 1229293A1 EP 02000283 A EP02000283 A EP 02000283A EP 02000283 A EP02000283 A EP 02000283A EP 1229293 A1 EP1229293 A1 EP 1229293A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- condenser
- box casing
- refrigerators
- freezers
- refrigeration circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/003—General constructional features for cooling refrigerating machinery
-
- 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
- F25B2339/042—Details of condensers of pcm 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
- F25B2339/046—Condensers with refrigerant heat exchange tubes positioned inside or around a vessel containing water or pcm to cool the refrigerant gas
Definitions
- the present invention relates to a refrigeration circuit condenser, particularly for refrigerators, freezers and similar appliances for domestic use.
- the condenser is of the flat hairpin coil type disposed within a heat dissipator, for example comprising wires, bars, metal plates or a finned sheet metal structure, to increase the dispersing surface.
- the condenser In conventional domestic refrigerators (and also in those other domestic appliances incorporating compressor-type refrigeration circuits) the condenser is applied to the rear face of the refrigerator cabinet via spacers (to reduce heat transfer towards that face) and is cooled by convective air movement produced by itself. In other words, its cooling is achieved by environmental air in movement, i.e. by a thermosiphon effect.
- the operative conditions of the refrigeration circuit are not optimum because they vary depending on how the refrigerator is used (door opening and closure frequency), the environmental conditions, the location of the refrigerator and its load. To this can be added a decrease in the condenser efficiency with time due to the inevitable deposits of dust, grease etc. which are practically irremovable because of the complexity of the shape of a flat condenser.
- the main object of the present invention is to provide an improved condenser which, as practical rests have demonstrated, enables the operative conditions of the refrigeration circuit which incorporates it to be tangibly improved, so reducing its energy consumption for equal conditions.
- An accessory object of the present invention is to provide an improved condenser which can be easily cleaned.
- the condenser of the invention comprises a sealed finned box casing 1 enclosing a flat tubular hairpin coil contained, disposed or mounted in a heat dissipator in the form of a finned structure 3 composed of one or more metal sheets.
- a fluid 4 having a high specific heat fills the interior of the finned box casing 1.
- the flat tubular hairpin coil 2 (through which the refrigerant fluid flows) plus the finned structure 3 which contains it or in which it is mounted is substantially identical constructionally to the traditional flat air condensers used in domestic refrigeration appliances, such as refrigerators, freezers or ice producers.
- the novelty lies in the fact of having positioned it in a sealed box casing filled with a liquid of high specific heat.
- the finned sealed box casing is of square or rectangular shape.
- the relative fins can assume the most varied forms, for example those reproduced schematically in Figures 4A, B, C.
- the fins are advantageously all parallel and extend vertically (when the condenser is in use), so making it simple to adequately clean the condenser of the invention (this cleaning being necessary to preserve its efficiency); in this manner the condenser of the invention differs from air condensers in which because of the complexity of the shape of the finned sheet metal containing the hairpin coil, adequate cleaning cannot be achieved in practice.
- the box casing presents a closable or sealable aperture or port 5 for introducing the fluid, and a sealed entry passage 2A and exit passage 2B for the tubular hairpin coil 2.
- the box casing 1 also presents conventional angle brackets 6 for fixing the condenser to the cabinet of the refrigeration appliance.
- the box casing can be made of sheet metal (for example steel) or even of plastic material, advantageously so if a good conductor of heat. Its outer faces are preferably black, achieved for example by painting or by pigmentation (in the case of plastic material).
- the box casing can be produced by pressing in two or more pieces to be bonded or welded together after mounting the hairpin coil with the relative finned sheet metal structure in one of them.
- the finned sheet metal structure can be bonded or welded along two opposite longitudinal edges 3A to the minor lateral walls 1A of the casing 1 (as shown for example in Figure 3).
- the fluid of high specific heat can be of the most diverse types.
- This fluid can be mains water, its saline solutions, eutectic mixtures, silicone gels, or mixtures or aqueous solutions of cellulose derivatives such as oxymethylcellulose.
- a particularly useful and advantageous composition X of such a cellulose derivative is the following:
- a comparative test used three refrigerators (in the same environment at a temperature of 25°C) which were identical except that one comprised a conventional air condenser, the second comprised a condenser of the invention with mains water as the filing fluid and the third comprised a condenser of the invention with the aforesaid composition X as the filling fluid.
- This comparative test provided the following results: Air condenser Water condenser Condenser with composition X a) average cell temp. (°C) 5 5 5 5 b) condenser temp. 46.3 35.5 32.3 c) percent activation (%) 36.5 33.2 31.1 d) power consumption (Wh/24h) 551 509 495 e) consumption difference (%) reference 7.6 10.2 in which:
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI010212 | 2001-02-02 | ||
IT2001MI000212A ITMI20010212A1 (it) | 2001-02-02 | 2001-02-02 | Condensatore di circuito frigorigeno particolarmente per frigoriferi congelatori e simili apparecchi domestici |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1229293A1 true EP1229293A1 (de) | 2002-08-07 |
EP1229293B1 EP1229293B1 (de) | 2006-08-23 |
Family
ID=11446727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02000283A Expired - Lifetime EP1229293B1 (de) | 2001-02-02 | 2002-01-15 | Kühlschrank oder Gefriergerät mit einem Verflüssiger |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1229293B1 (de) |
AT (1) | ATE337531T1 (de) |
BR (1) | BR0200254B1 (de) |
DE (1) | DE60214056T2 (de) |
ES (1) | ES2269524T3 (de) |
IT (1) | ITMI20010212A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008028790A1 (de) * | 2006-09-07 | 2008-03-13 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät |
DE102007062006A1 (de) | 2007-12-21 | 2009-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Verflüssiger für ein Kältegerät und Verfahren zum Betreiben desselben |
DE102015015084B3 (de) * | 2015-11-18 | 2017-03-09 | Johannes Georg Mehlig | Haushalts-Kühlschrank bzw. -Gefrierschrank |
CN108759262A (zh) * | 2018-05-21 | 2018-11-06 | 绥阳县耐环铝业有限公司 | 一种水冷式冰箱散热板 |
US10871315B2 (en) | 2016-03-16 | 2020-12-22 | Liebherr-Hausgerate Lienz Gmbh | Refrigerant circuit for a cooling and/or freezing appliance |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007023696B4 (de) | 2007-05-22 | 2011-06-22 | Institut für Luft- und Kältetechnik gGmbH, 01309 | Verflüssiger für Haushaltskältegeräte |
DE102010010858A1 (de) | 2010-02-10 | 2011-08-11 | Liebherr-Hausgeräte Ochsenhausen GmbH, 88416 | Kühl- und/oder Gefriergerät |
DE102012017345A1 (de) * | 2012-08-29 | 2014-05-15 | Johannes Georg Mehlig | Haushalts-Kühlschrank oder -Gefrierschrank |
DE102016012006A1 (de) * | 2016-08-10 | 2018-02-15 | Liebherr-Hausgeräte Lienz Gmbh | Kühl- und/oder Gefriergerät |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1741638A (en) * | 1926-08-12 | 1929-12-31 | Copeland Products Inc | Refrigerator |
FR880816A (fr) * | 1941-04-19 | 1943-04-06 | Perfectionnements aux condenseurs frigorifiques | |
US2365786A (en) * | 1943-09-09 | 1944-12-26 | Westinghouse Electric & Mfg Co | Refrigeration apparatus |
GB1006039A (en) * | 1964-03-26 | 1965-09-29 | Reiert Aluminium Metall | Improvements relating to heat exchangers |
FR2118905A1 (de) * | 1970-12-24 | 1972-08-04 | Gdf Generatori Freddo | |
DE3810927A1 (de) * | 1987-05-25 | 1989-01-12 | Huetoegepgyar | Kuehlakkumulator |
EP0699882A1 (de) * | 1994-09-01 | 1996-03-06 | Norfrost Limited | Kondensator für ein Kühlgerät |
EP0866289A2 (de) * | 1997-03-18 | 1998-09-23 | Société d'Electromenager du Nord Selnor | Wärmetauscher wie ein Verflüssiger und/oder Verdampfer für Kältegerät |
-
2001
- 2001-02-02 IT IT2001MI000212A patent/ITMI20010212A1/it unknown
-
2002
- 2002-01-15 ES ES02000283T patent/ES2269524T3/es not_active Expired - Lifetime
- 2002-01-15 EP EP02000283A patent/EP1229293B1/de not_active Expired - Lifetime
- 2002-01-15 DE DE60214056T patent/DE60214056T2/de not_active Expired - Lifetime
- 2002-01-15 AT AT02000283T patent/ATE337531T1/de not_active IP Right Cessation
- 2002-01-31 BR BRPI0200254-0A patent/BR0200254B1/pt not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1741638A (en) * | 1926-08-12 | 1929-12-31 | Copeland Products Inc | Refrigerator |
FR880816A (fr) * | 1941-04-19 | 1943-04-06 | Perfectionnements aux condenseurs frigorifiques | |
US2365786A (en) * | 1943-09-09 | 1944-12-26 | Westinghouse Electric & Mfg Co | Refrigeration apparatus |
GB1006039A (en) * | 1964-03-26 | 1965-09-29 | Reiert Aluminium Metall | Improvements relating to heat exchangers |
FR2118905A1 (de) * | 1970-12-24 | 1972-08-04 | Gdf Generatori Freddo | |
DE3810927A1 (de) * | 1987-05-25 | 1989-01-12 | Huetoegepgyar | Kuehlakkumulator |
EP0699882A1 (de) * | 1994-09-01 | 1996-03-06 | Norfrost Limited | Kondensator für ein Kühlgerät |
EP0866289A2 (de) * | 1997-03-18 | 1998-09-23 | Société d'Electromenager du Nord Selnor | Wärmetauscher wie ein Verflüssiger und/oder Verdampfer für Kältegerät |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008028790A1 (de) * | 2006-09-07 | 2008-03-13 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät |
DE102007062006A1 (de) | 2007-12-21 | 2009-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Verflüssiger für ein Kältegerät und Verfahren zum Betreiben desselben |
DE102015015084B3 (de) * | 2015-11-18 | 2017-03-09 | Johannes Georg Mehlig | Haushalts-Kühlschrank bzw. -Gefrierschrank |
US10871315B2 (en) | 2016-03-16 | 2020-12-22 | Liebherr-Hausgerate Lienz Gmbh | Refrigerant circuit for a cooling and/or freezing appliance |
CN108759262A (zh) * | 2018-05-21 | 2018-11-06 | 绥阳县耐环铝业有限公司 | 一种水冷式冰箱散热板 |
Also Published As
Publication number | Publication date |
---|---|
ES2269524T3 (es) | 2007-04-01 |
ATE337531T1 (de) | 2006-09-15 |
BR0200254A (pt) | 2002-10-08 |
ITMI20010212A1 (it) | 2002-08-02 |
EP1229293B1 (de) | 2006-08-23 |
BR0200254B1 (pt) | 2010-03-09 |
DE60214056T2 (de) | 2007-03-01 |
DE60214056D1 (de) | 2006-10-05 |
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