WO2014079892A1 - Dispositif de refroidissement et procédé permettant de faire fonctionner un dispositif de refroidissement - Google Patents

Dispositif de refroidissement et procédé permettant de faire fonctionner un dispositif de refroidissement Download PDF

Info

Publication number
WO2014079892A1
WO2014079892A1 PCT/EP2013/074297 EP2013074297W WO2014079892A1 WO 2014079892 A1 WO2014079892 A1 WO 2014079892A1 EP 2013074297 W EP2013074297 W EP 2013074297W WO 2014079892 A1 WO2014079892 A1 WO 2014079892A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
cooling
air
light
wavelength
Prior art date
Application number
PCT/EP2013/074297
Other languages
German (de)
English (en)
Inventor
Peter Immerath
Original Assignee
Peter Immerath
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 Peter Immerath filed Critical Peter Immerath
Priority to ES13795714.8T priority Critical patent/ES2606836T3/es
Priority to EP13795714.8A priority patent/EP2923162B1/fr
Publication of WO2014079892A1 publication Critical patent/WO2014079892A1/fr

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
    • 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
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D27/00—Lighting arrangements
    • F25D27/005—Lighting arrangements combined with control means

Definitions

  • the invention initially relates to a cooling device with a cooling space for receiving refrigerated goods, with at least one Verdam fer for cooling of the refrigerated goods
  • Refrigerator through the at least one evaporator and back into the refrigerator, with a fin heat exchanger on an inflow side of the at least one evaporator, through which the air flows into the at least one evaporator, and with a
  • Refrigerant by means of which the heat in the at least one evaporator heat is withdrawn and with a Irradiation Einseinichtung (14), by means of which blue light (wavelength ⁇ 420 to 490 nm) or red light (wavelength ⁇ 630 to 790 nm) can be generated.
  • the invention further relates to a method for operating such a cooling device.
  • the known cooling device consists essentially of a closed, usually both heat and air-insulated insulated refrigerator. At least one evaporator is mounted in the cooling space and at least one fan, which circulates the air in the cooling space and sucks or presses through the evaporator.
  • Evaporator can be a classic or a "flooded" evaporator.
  • the Applicant offers such cooling devices for the food industry
  • the evaporators are usually mounted under the ceiling of the refrigerator and placed there directly on fans that suck the air through the evaporator. Often, the vaporizer is laminated optically downwards by a suspended ceiling and the air forced.
  • Penicillium finds in these cooling devices a nearly ideal breeding ground from various deposited there carbohydrates:
  • the zu Cooling goods contain flour and can be dusted with it, embroidery cart for storage of dough pieces are dusted with starch to avoid sticking and in carton storage, the air contains the finest cellulose fibers.
  • Cellulose and starch are an ideal breeding ground for mold fungi.
  • the evaporator must be regularly defrosted - up to several times a day - to avoid permanent icing. The temporarily elevated temperature of the evaporator further stimulates the spread of any existing Penicillium infestation.
  • the Penicillium infestation of the lamellae is technically problematic in several respects: first, the mold moves the interstices of the lamellae and reduces the cooling capacity of the evaporator to complete failure, the other forms Penicillium as a metabolite of citric acid, the Aluminum attacks existing lamellae and can completely decompose.
  • Penicillium To limit the contamination with Penicillium, the known plants are regularly - usually at intervals of a few weeks - completely cleared and treated with very aggressive cleaning agents.
  • UV-C emitter wavelength ⁇ 100 to 280 nm
  • the invention has for its object to reduce the contamination of the cooling device with Penicillium.
  • Molds such. B. Aspergillus or Fusaria require significantly higher temperatures for their metabolism.
  • modern cooling device at normal operating temperatures almost all mold fungi of the genus Penicillium are prevented from growing and finally killed.
  • the irradiation device of a cooling device according to the invention preferably has at least one light-emitting diode (LED) for generating the light.
  • LED light-emitting diode
  • Diodes are particularly suitable for use in cooling devices, because they have a significantly lower energy consumption compared to other bulbs - and thus a lower heat development.
  • the wavelength ⁇ of the at least one LED is preferably adjustable in such an irradiation device.
  • the irradiation device with such a so-called "RGB LED” can - as an alternative to irradiation with blue light - take on other functions: For example, the irradiation device can be temporarily switched to red or green light, in which a possible infestation with mold fungi visually recognizable in the form of dark spots easily. Furthermore, the
  • Irradiation device to illuminate the cold room to be converted to white light.
  • the at least one LED is cast in a resin.
  • a large number of LEDs can be combined in a small space.
  • a cooling device has at least one measuring element, by means of which the wavelength of the light can be determined.
  • a change in the wavelength of the light can be detected, for example, by aging of the lighting means.
  • the wavelength ⁇ can be tracked automatically.
  • a cooling device advantageously additionally has at least one UV-A and / or UV-C light source.
  • Penicillium phosphoresces under UV-A light (wavelength ⁇ 315 to 380 nm, so-called "black light") and is thus particularly easy to recognize even with only a small infestation.
  • the effect of UV-C (as described above) is already Sterilization used.
  • the fin heat exchanger is irradiated with the blue or red light.
  • Such an inventive method can be with one of the above described
  • Run cooling devices according to the invention and is characterized by the advantages mentioned there.
  • the process according to the invention is food-compliant (tested according to CE and HACCP) and can effectively prevent mold fouling of new plants (cold rooms, cabinets, counters, gauges) and significantly lengthen the cleaning cycles.
  • the costs are compared to UV-C much lower, disadvantages such as strong heat radiation, very limited lifespan, health hazards of mishandling and risk of glass breakage do not occur.
  • the light has a
  • the selective frequency of such a method according to the invention stimulates certain protein molecules of the mold to vibrate.
  • the chosen frequency has a very strong effect on the metabolism and growth of mold all the way to
  • the air in the cooling space preferably has on average a temperature below 8 ° C. This is the typical work area of Applicants' refrigerators for use in the food industry, particularly for the storage and maturation of baked goods and their precursors.
  • the at least one evaporator is particularly preferably defrosted at least daily.
  • Fig. 1 shows a cooling device according to the invention
  • the cooling device 1 according to the invention shown in Figure 1 has a front wall 2, a rear wall 3, two side walls 4, a bottom 5 and a ceiling 6, which are each insulated in terms of heat and ventilation.
  • a door 7 is attached in the front wall 2, a door 7 is attached.
  • the cooling device 1 offers in a refrigerator 8, for example, parking space for up to three embroidery cart 9 for storage and maturation of dough pieces and for the storage of finished baked goods.
  • the refrigerator 6 limits upwards a suspended ceiling 10, above the one
  • the Evaporator 1 1 is attached.
  • the evaporator 11 has a fin heat exchanger 12 on and on its (not shown) Auströmseite three fans for circulating the air.
  • the air flow during operation of the cooling device 1 is indicated by arrows: The fans suck room air from the cooling chamber 6 on the front wall 2 of the cooling device 1 between the ceiling 6 and the suspended ceiling 10, and through the inflow side 13 of the fin heat exchanger 12 in the Evaporator 11 and then push the cooled air back to the rear wall 3 of the cooling device 1 in the cooling chamber. 6
  • the cooling device 1, an irradiation device 14, which is directed to irradiate the inflow side 13 of the evaporator 11 with blue light directly on the fins heat exchanger 12.
  • the irradiation device 14 has a housing 15 made of an extruded aluminum U-profile with a width 16 of 20 mm and a height 17 of 15 mm and a length 18 of 100 cm, into which a circuit board 19 is embedded. On the board 19, about one hundred RGB LEDs 20 are arranged in a row next to each other at a distance 21 of 10 mm.
  • a driver (not shown) for the LED 20 is further arranged with a pulse width modulation converter, which drives the LED 20 with the suitable for blue light with a wavelength ⁇ of 450.8 ⁇ 5 nm frequency.
  • the LED 20 can also be driven to emit white light.
  • a measuring element 22 here: a photocell with a peak at 460 nm is arranged on the circuit board 19 for the continuous monitoring of the wavelength of the blue light.
  • the circuit board 19, the LED 20 and the photocell are encapsulated with a synthetic resin with high breaking strength and optical quality.
  • the irradiation device 14 has a connecting cable 23 for connection to a not shown power supply with a
  • the irradiation device 14 has a power consumption of 8.5 Wm
  • Irradiation device LED with a fixed wavelength of 450 nm as well as individual UV-A and UV-C LEDs.
  • individual UV-A and UV-C LEDs are

Landscapes

  • 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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

L'invention concerne un dispositif de refroidissement (1) pourvu d'une chambre de refroidissement (6) destinée à recevoir des articles à refroidir, d'au moins un évaporateur (11) destiné à refroidir l'air qui circule autour des articles à refroidir, d'au moins un ventilateur destiné à recirculer ledit air en provenant de la chambre de refroidissement(6) en l'envoyant à travers l'au moins un évaporateur (11) de manière à ce qu'il rejoigne de nouveau de la chambre de refroidissement (6), d'un échangeur de chaleur à ailettes (12) qui est situé du côté de l'entrée des flux (13) dans l'au moins un évaporateur (11) et qui est traversé par le flux d'air entrant dans l'au moins un évaporateur (11), et d'un fluide frigorigène permettant d'absorber de la chaleur véhiculée par l'air lorsque ce dernier passe dans l'au moins un évaporateur (11), et d'un organe d'irradiation (14) permettant de produire de la lumière bleue (longueur d'onde λ 420 à 490 nm) ou de la lumière rouge (longueur d'onde λ 630 à 790 nm). En outre, l'invention concerne un procédé permettant de faire fonctionner un tel dispositif de refroidissement (1). Afin d'éviter une contamination du dispositif de refroidissement (1) au penicillium, l'échangeur de chaleur à ailettes (12) est irradié selon l'invention avec ladite lumière bleue ou rouge.
PCT/EP2013/074297 2012-11-23 2013-11-20 Dispositif de refroidissement et procédé permettant de faire fonctionner un dispositif de refroidissement WO2014079892A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES13795714.8T ES2606836T3 (es) 2012-11-23 2013-11-20 Dispositivo de refrigeración y procedimiento para poner en funcionamiento un dispositivo de refrigeración
EP13795714.8A EP2923162B1 (fr) 2012-11-23 2013-11-20 Appareil frigorifique et procédé de fonctionnement d'un tel appareil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012221471.2A DE102012221471B4 (de) 2012-11-23 2012-11-23 Kühlvorrichtung und Verfahren zum Betreiben einer Kühlvorrichtung
DE102012221471.2 2012-11-23

Publications (1)

Publication Number Publication Date
WO2014079892A1 true WO2014079892A1 (fr) 2014-05-30

Family

ID=49667125

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/074297 WO2014079892A1 (fr) 2012-11-23 2013-11-20 Dispositif de refroidissement et procédé permettant de faire fonctionner un dispositif de refroidissement

Country Status (5)

Country Link
EP (1) EP2923162B1 (fr)
DE (1) DE102012221471B4 (fr)
ES (1) ES2606836T3 (fr)
PL (1) PL2923162T3 (fr)
WO (1) WO2014079892A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2834555A3 (fr) * 2001-12-19 2003-07-11 Electrolux Home Prod Corp Appareil frigorifique avec dispositif perfectionne d'epuration de l'air
JP2009127977A (ja) * 2007-11-27 2009-06-11 Toshiba Corp 冷蔵庫
JP2010249427A (ja) * 2009-04-16 2010-11-04 Mitsubishi Electric Corp 冷蔵庫

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0534052A (ja) * 1991-07-29 1993-02-09 Osaka Shosen Mitsui Senpaku Kk 園芸作物の保蔵方法及びその装置
US6726341B2 (en) * 2001-10-12 2004-04-27 Koninklijke Philips Electronics N.V. LED illumination for cold storage compartments
EP2007231B1 (fr) * 2006-04-11 2011-12-07 Lionel Scott Procédé de traitement de produits
KR100758208B1 (ko) * 2006-07-03 2007-09-12 주식회사 대우일렉트로닉스 야채의 광합성이 가능한 냉장고 및 이의 제어 방법
JP5359174B2 (ja) * 2007-10-31 2013-12-04 パナソニック株式会社 冷蔵庫
JP2011142828A (ja) 2010-01-12 2011-07-28 Waseda Univ 光感受性遺伝子発現調節システム
WO2012149992A1 (fr) * 2011-05-04 2012-11-08 Merck Patent Gmbh Dispositif de conservation de produits frais

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2834555A3 (fr) * 2001-12-19 2003-07-11 Electrolux Home Prod Corp Appareil frigorifique avec dispositif perfectionne d'epuration de l'air
JP2009127977A (ja) * 2007-11-27 2009-06-11 Toshiba Corp 冷蔵庫
JP2010249427A (ja) * 2009-04-16 2010-11-04 Mitsubishi Electric Corp 冷蔵庫

Also Published As

Publication number Publication date
PL2923162T3 (pl) 2017-04-28
DE102012221471A1 (de) 2014-05-28
ES2606836T3 (es) 2017-03-28
EP2923162B1 (fr) 2016-09-14
DE102012221471B4 (de) 2014-06-26
EP2923162A1 (fr) 2015-09-30

Similar Documents

Publication Publication Date Title
EP3516950A1 (fr) Dispositif et procédé de culture de plantes
DE102017117635A1 (de) Desinfektionsverfahren und Desinfektionsvorrichtung
DE10203081A1 (de) Kühlluftumwälzvorrichtung in einem Kühlschrank
DE102005022934A1 (de) Schrank zum kontrollierten Aufziehen von Pflanzen und zur Erreichung gleichbleibender pflanzlicher Geschmacksqualitäten
EP2815193A1 (fr) Appareil frigorifique à éclairage indirect du compartiment de réfrigération
DE102010031696A1 (de) Kühl-und/oder Gefriergerät
EP2923162B1 (fr) Appareil frigorifique et procédé de fonctionnement d'un tel appareil
DE102007041453A1 (de) Warenpräsentationsmöbel
AT12664U1 (de) Beleuchtungseinrichtung für ein kühlmöbel
DE2236004A1 (de) Verfahren und vorrichtung zum lagern und transportieren von nahrungsmitteln in frischem zustand
DE112015007073T5 (de) Kühlgerät
DE3026530A1 (de) Kopfseitig offener, gekuehlter schaustellbehaelter mit mit umgebender luft arbeitendem abtausystem
DE102017011134A1 (de) Haushaltskältegerät sowie Verfahren zum Steuern einer in diesem angeordneten Lichtquellenanordnung
DE29803105U1 (de) Infrarotfreie und ultraviolettfreie Beleuchtung von unverpackten Backwaren
DE102010040360A1 (de) Kältegerät mit mehrfunktionaler Beleuchtungseinrichtung
DE202019001043U1 (de) Verkaufsmöbel mit Beleuchtung
DE102017114625A1 (de) Kühlregal
EP2708161A1 (fr) Comptoir réfrigéré à circulation d'air et procédé de fonctionnement d'un comptoir réfrigéré à circulation d'air
CH635994A5 (de) Kuehlschaukasten.
DE202008007733U1 (de) Kühl- und/oder Gefriergerät
EP2881687B1 (fr) Appareil frigorifique
DE102011085370A1 (de) Kältegerät mit frischhaltevorrichtung
EP1208774B1 (fr) Comptoir frigorifique avec un circuit de refroidissement supplémentaire séparé
DE202014004033U1 (de) Lagervorrichtung für Obst und Gemüse
EP0276010B1 (fr) Comptoir frigorifique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13795714

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2013795714

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2013795714

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE