DK154683B - COOLED - Google Patents
COOLED Download PDFInfo
- Publication number
- DK154683B DK154683B DK094279AA DK94279A DK154683B DK 154683 B DK154683 B DK 154683B DK 094279A A DK094279A A DK 094279AA DK 94279 A DK94279 A DK 94279A DK 154683 B DK154683 B DK 154683B
- Authority
- DK
- Denmark
- Prior art keywords
- air
- storage area
- duct
- cooling
- openings
- Prior art date
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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
- F25D21/125—Removing frost by hot-fluid circulating system separate from the refrigerant system the hot fluid being ambient air
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Freezers Or Refrigerated Showcases (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Defrosting Systems (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
iin
DK 154683 BDK 154683 B
Den foreliggende opfindelse angår en køledisk af den i kravets' indledning angivne art.The present invention relates to a refrigerated counter of the type specified in the preamble of the claim.
Fra kølediske, hvor der over den åbne forside strømmer flere lufttæpper og fra kølekummer er det kendt at fore-5 tage afrimning,ved at luftstrømmen vendes. Man har herved, som kendt fra beskrivelsen til US patent 4.026.121, kortsluttet eller afgrenet luftstrømmen direkte mellem den indre kanal og åbningerne. Den kolde luft i lagerområdet forbliver forholdsvis rolig og uforstyrret, således at opvarm-10 ning af de lagrede varer er minimal. For så vidt angår kølekummerne, hvis adgangsåbning findes ..foroven, holdes den kolde luftmasse i lagerområdet intakt af tyngdekraften , således at de lagrede varer ikke udsættes for opvarmning.From cooling counters, where several air blankets flow over the open front and from cooling troughs, it is known to defrost by reversing the air flow. As is known from the description of US patent 4,026,121, the air flow has been short-circuited or branched directly between the inner duct and the openings. The cold air in the storage area remains relatively calm and undisturbed, so that heating of the stored goods is minimal. In the case of the cooling chambers, the access opening of which is located at the top, the cold air mass in the storage area is kept intact by gravity, so that the stored goods are not exposed to heating.
Ved kølediske med kun et lufttæppe over den åbne 15 forside, vil ændring af luftstrømmen ved afrimning medføre, at luften, der da blæses ud fra åbningerne nederst i forsiden' , tvinges op og ud af kabinettet, hvilket medfører, at den kolde luft i lagerområdet trækkes bort. Varm luft fra omgivelserne vil erstatte den kolde luft, og dette kan med-9 0 føre termisk chok og ødelæggelse af de lagrede fødevarer.In refrigerated counters with only one air blanket over the open front, changing the air flow during defrosting will mean that the air, which is then blown out of the openings at the bottom of the front ', will be forced up and out of the cabinet, which means that the cold air in the storage area pulled away. Warm air from the surroundings will replace the cold air, and this can lead to thermal shock and destruction of the stored food.
Ved ifølge opfindelsen at udforme en køledisk som anvist i kravet undgår man denne ulempe. Den i begyndelsen kolde luft, der blæses ud gennem åbningerne nederst i den åbne forside under afrimning, vil vælte ind over lagerområ-25 det og fastholde den lave temperatur i dette, fordi der i lagerområdet er frembragt et undertryk. Dette undertryk skyldes den luft, der suges ind i kanalen gennem åbningerne til lagerområdet.By designing a refrigerated counter according to the invention as indicated in the claim, this disadvantage is avoided. The initially cold air blown out through the openings at the bottom of the open front during defrosting will tumble over the storage area and maintain the low temperature therein because a negative pressure is generated in the storage area. This negative pressure is due to the air that is sucked into the duct through the openings to the storage area.
Opfindelsen skal i det følgende forklares nærmere 30 i forbindelse med tegningen, der viser et lodret snit gennem en køledisk ifølge opfindelsen set fra siden.The invention will be explained in more detail below in connection with the drawing, which shows a vertical section through a refrigerated counter according to the invention seen from the side.
Den viste køledisk 10 udgøres af et kabinet med åben forside, for hvilken der findes et recirkulerende lufttæppe. Kabinettet omfatter et hus 12 på en underdel 14 35 og har en øverste væg 16, en bagvæg 18, et par endevægge 20, en bund 22, en nedre frontvæg 24 og den åbne forside 26 mellem den nedre frontvæg 24 og den forreste del af den 2The refrigerated counter 10 shown consists of a cabinet with an open front, for which there is a recirculating air blanket. The housing comprises a housing 12 on a lower part 14 35 and has an upper wall 16, a rear wall 18, a pair of end walls 20, a bottom 22, a lower front wall 24 and the open front wall 26 between the lower front wall 24 and the front part thereof. 2
DK 154683 BDK 154683 B
øverste væg 16. De forskellige vægge afgrænser tilsammen et lagerområde eller -rum 28, som omfatter et nederste lagerområde 30, der begrænses af bagvæggen 18 og den nedre frontvæg 24. Den åbne forside 26 tjener som adgangså/bning 5 til lagerrummet 28 og giver frit indblik til de lagrede varer.upper wall 16. The various walls together define a storage area or space 28, which comprises a lower storage area 30 bounded by the rear wall 18 and the lower front wall 24. The open front side 26 serves as an access opening / opening 5 to the storage space 28 and provides free insight into the stored goods.
I den øverste væg 16, bagvæggen 18, bunden 22 og den nedre frontvæg 24 findes kanaler, som tillader en luftstrøm at recirkulere om lagerrummet 28. Mere nøjagtigt fin-10 des under den øverste væg 16 et toppanel 32, foran bagvæggen 18 et bagpanel 34, over bunden 22 et bundpanel 36 og bag den nedre frontvæg 24 et nedre frontpanel 38, som med de tilsvarende vægge afgrænser kanalerne 40. Ved den forreste ende af toppanelet 32 findes i dette en langstrakt 15 nedadrettet åbning 42 ind til kanalen 40. Åbningen 42 tjener som udgangsåbning for køleluft under sædvanlig køling og strækker sig i hele kølediskens bredde. Ved den øvre kant af den nedre frontvæg 24 findes en tilsvarende langstrakt åbning 44 ind til kanalen 40. Denne nedre åbning 44 20 tjener under normål køling som indgangsåbning for luften i køletæppet for den øvre åbning 42 og er foretrukket forsynet med et gitter, som tjener til at hindre, at genstande kan falde ned i kanalen 40, Gitteret har opadvendte åbninger øverst i den forreste frontvæg og indadrettede 25 åbninger, der er således arrangeret, at de fremmer den tidligere nævnte kaskadevirkning.In the upper wall 16, the rear wall 18, the bottom 22 and the lower front wall 24 there are channels which allow an air flow to recirculate around the storage space 28. More precisely under the upper wall 16 a top panel 32 is found, in front of the rear wall 18 a rear panel 34 , above the bottom 22 a bottom panel 36 and behind the lower front wall 24 a lower front panel 38, which with the corresponding walls delimits the channels 40. At the front end of the top panel 32 there is in this an elongate 15 downward opening 42 into the channel 40. The opening 42 serves as an outlet for cooling air during normal cooling and extends across the entire width of the cooling counter. At the upper edge of the lower front wall 24 there is a corresponding elongate opening 44 into the duct 40. This lower opening 44 20 serves under normal cooling as an inlet opening for the air in the cooling blanket of the upper opening 42 and is preferably provided with a grid which serves to prevent objects from falling into the channel 40, the grid has upwardly facing openings at the top of the front wall and inwardly directed openings 25 arranged so as to promote the aforesaid cascade effect.
På bagvæggen er ophængt et antal lodret adskilte hylder 50.On the rear wall are hung a number of vertically separated shelves 50.
Bagest og nederst i kanalen 40 er anbragt en køle-30 plade 54 for den gennem kanalen strømmende luft. Spolen 54 er foretrukket forbundet til en ikke vist kompressor og et styresystem til regulering af temperaturen i kabinet tet. En køledisk af denne art benyttes typisk til kød og/eller kødproduktion ved en lagertemperatur omkring 0°C.At the rear and at the bottom of the duct 40, a cooling plate 54 is arranged for the air flowing through the duct. The coil 54 is preferably connected to a compressor (not shown) and a control system for regulating the temperature in the housing. A refrigerated counter of this kind is typically used for meat and / or meat production at a storage temperature around 0 ° C.
35 I kanalen 40 er også anbragt et antal luftbevægen de organer såsom ventilatorer 56 fordelt i hele kølediskens bredde. Disse organer er ifølge opfindelsen i standIn the duct 40 are also arranged a number of air-moving means such as fans 56 distributed over the entire width of the cooling counter. These means are capable according to the invention
DK 154683 BDK 154683 B
3 •til at bevæge luften i begge retninger gennem kanalen 40, nemlig dels under køling i én retning, dels under afrimning i den modsatte, med pile angivne retning* fe luftbe-vægende organer er således udført, eksempelvis ved blad-5 forme eller på anden måde, at luftstrømmen er væsentlig mindre under køling end under afrimning« Por at opnå mulighed for luftbevægelse i begge retninger kan benyttes reversible motorer, eller man kan have et sæt ventilatorer, der benyttes ved køling, og et andet, der benyttes ved af-10 rimning.3 • to move the air in both directions through the duct 40, namely partly during cooling in one direction, partly during defrosting in the opposite direction, indicated by arrows * fe air-moving means are thus designed, for example by blade molds or on otherwise the airflow is significantly less during cooling than during defrosting 'To achieve the possibility of air movement in both directions, reversible motors can be used, or one can have a set of fans used for cooling and another used for defrosting. 10 rhyme.
I det lodrette bagpanel 34 findes et antal åbninger 34’, foretrukket i mindst den øvre del af panelet.In the vertical rear panel 34 there are a number of openings 34 ', preferably in at least the upper part of the panel.
Under køling tjener spolen 54-til at køle'luften-i kanalen 40, hvorhos luften suges ind gennem den nedre åb-15 ning 44 og blæses ud gennem den øvre åbning 42. fen herfra nedadrettede luftstrøm danner et lufttæppe i omtrent S-form over den åbne forside ned mod den nedre åbning 44. En vis del af luften fra kanalen 40 vil strømme ud gennem åbningerne 34' og passere de lagrede varer, fette indvirker ik-20 ke væsentligt på lufttæppet, men fremmer kølingen af de lagrede varer og giver overtryk i køleområdet 30.During cooling, the coil 54 serves to cool the air in the duct 40, whereby the air is sucked in through the lower opening 44 and blown out through the upper opening 42. From there downward air flow forms an air blanket in approximately S-shape over the open front face down towards the lower opening 44. A certain part of the air from the duct 40 will flow out through the openings 34 'and pass the stored goods, fats do not significantly affect the air blanket, but promote the cooling of the stored goods and provide overpressure in the cooling area 30.
Under kølingen vil spolen 54 blive isbelagt på grund af fugtigheden i luften, fet er derfor nødvendigt, at spolen periodisk afrimes. Afrimningen kan iværksættes 25 -ved hjælp af et ur eller ved hjælp af temperaturfølere og indebærer, at kølespolen 54 afskæres fra kompressoren,og at luftstrømmen i kanalen vendes. Uår dette sker,suges væsentlige luftmængder ind gennem den øvre åbning 42 ned forbi spolen 54. fenne luft, der kommer fra omgivelserne, har en 30 væsentlig højere temperatur, således at is på spolen 54 smelter. En del af fugtigheden medbringes af luften, medens den væsentlige del drypper ned i en bakke 60 i bunden af disken. luften presses af ventilatorerne ud gennem den nedre åbning 44. Åbningerne 34’ i bagpanelet opfylder en 35 vigtig mission under afrimningen. Især da de tillader forbindelse mellem kanalen og lagerområdet, og da ventilatorerne frembringer vakuum i kanalen 40, dannes der under- 4During cooling, the coil 54 will be ice-coated due to the humidity in the air, therefore it is necessary for the coil to be periodically defrosted. Defrosting can be initiated by means of a clock or by means of temperature sensors and means that the cooling coil 54 is cut off from the compressor and that the air flow in the duct is reversed. When this happens, substantial amounts of air are sucked in through the upper opening 42 down past the coil 54. Fennel air coming from the surroundings has a significantly higher temperature, so that ice on the coil 54 melts. Some of the moisture is carried by the air, while the essential part drips into a tray 60 at the bottom of the disk. the air is forced out by the fans through the lower opening 44. The openings 34 'in the rear panel fulfill an important mission during defrosting. Especially since they allow connection between the duct and the storage area, and since the fans generate vacuum in the duct 40,
DK 154683 BDK 154683 B
tryk i lagerområdet 28. Dette undertryk og den forholdsvis store vægt af den kolde luft sikrer, at den af spolen 54 kølede, fra åbningen 44 udstrømmende luft søger ind i lagerområdet. Det medfører, at kold luft vælter ned i 5 det nedre område 30 og vil trænge op over hylderne og de på disse placerede varer (jvfr. pilene A), således at disses nedkøling fastholdes under afrimningens første del. En del af.denne kolde luft suges ind gennem åbningerne 34' i bagpanelet, og meget af luften strømmer ud til omgivelser-10 ne. Dette sikrer, at de lagrede varer ikke udsættes for bratte temperaturændringer med deraf følgende ødelæggelse. Efterhånden som afrimningen skrider frem, vil temperaturen af den luft, som passerer spolen 54, vokse, hvorved den luft, der strømmer ud gennem åbningen 44 bliver lettere.pressure in the storage area 28. This negative pressure and the relatively large weight of the cold air ensures that the air cooled by the coil 54 from the opening 44 seeks its way into the storage area. This causes cold air to fall into the lower area 30 and will penetrate above the shelves and the goods placed on them (cf. arrows A), so that their cooling is maintained during the first part of the defrost. Some of this cold air is sucked in through the openings 34 'in the rear panel, and much of the air flows out to the surroundings. This ensures that the stored goods are not exposed to abrupt temperature changes with consequent destruction. As defrosting progresses, the temperature of the air passing the coil 54 will increase, thereby facilitating the air flowing out through the opening 44.
15 Denne varmere luft vil stige hurtigere og mere lodret (Jvfr. pilene A') end den i begyndelsen koldere luft. Foretrukket'er den nedre del af kabinettet og den nedre åbning 44 trukket frem i forhold til den øvre åbning 42.15 This warmer air will rise faster and more vertically (cf. arrows A ') than the initially colder air. Preferably, the lower portion of the cabinet and the lower opening 44 are advanced relative to the upper opening 42.
Den opstigende, varmere luft kan således forlade kabinet-20 tet uden nævneværdig tendens til at trænge ind i lagerområdet. Denne virkning modarbejder den virkning,undertrykket i lagerområdet har, i stedet for at fremme den, som den i begyndelsen kolde luft gjorde. Dette er fordelagtigt derved, at den varmere luft ikke i samme grad som den i begyn-25 delsen koldere luft trænger ind i lagerområdet, som altså bibeholder en lavere temperatur end afrimningsluften.The rising, warmer air can thus leave the housing without appreciable tendency to penetrate into the storage area. This effect counteracts the effect that the negative pressure in the storage area has, instead of promoting it, as the initially cold air did. This is advantageous in that the warmer air does not penetrate into the storage area to the same degree as the initially colder air, which thus maintains a lower temperature than the defrost air.
lår afrimningen er afsluttet, vendes luftstrømmen i kanalen 40 igen.thigh defrost is completed, the air flow in the duct 40 is reversed.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US88469778A | 1978-03-08 | 1978-03-08 | |
| US88469778 | 1978-03-08 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK94279A DK94279A (en) | 1979-09-09 |
| DK154683B true DK154683B (en) | 1988-12-12 |
| DK154683C DK154683C (en) | 1989-06-19 |
Family
ID=25385174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK094279A DK154683C (en) | 1978-03-08 | 1979-03-07 | COOLED |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS54139164A (en) |
| AU (1) | AU523250B2 (en) |
| CA (1) | CA1093850A (en) |
| CH (1) | CH635994A5 (en) |
| DE (1) | DE2908726C2 (en) |
| DK (1) | DK154683C (en) |
| ES (1) | ES478321A1 (en) |
| FI (1) | FI70372C (en) |
| FR (1) | FR2419485A1 (en) |
| GB (1) | GB2016669B (en) |
| IT (1) | IT1110355B (en) |
| NO (1) | NO156591C (en) |
| SE (1) | SE449292B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE414338B (en) * | 1978-10-20 | 1980-07-21 | Electrolux Ab | DEVICE FOR COOLED OR FROZEN GOODS |
| JPS57153182A (en) * | 1981-03-18 | 1982-09-21 | Fuji Electric Co Ltd | Pneumatic defrosting operation for open showcase |
| JPS63113280A (en) * | 1986-10-29 | 1988-05-18 | 辛島 仁 | Freezing refrigerating display case |
| US5475987A (en) * | 1994-11-17 | 1995-12-19 | Delaware Medical Formation, Inc. | Refrigerated display case apparatus with enhanced airflow and improved insulation construction |
| DE20021025U1 (en) * | 2000-12-12 | 2002-04-18 | Rewe-Zentral AG, 50668 Köln | refrigerated |
| EP2013556A4 (en) * | 2006-05-01 | 2012-08-15 | Carrier Corp | Indoor air quality improvement by re-evaporation control |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB865147A (en) * | 1958-02-03 | 1961-04-12 | Hussmann Refrigerator Co | Display case with adjustable refrigerated shelves |
| DE2123646A1 (en) * | 1971-05-12 | 1972-11-23 | Linde Ag, 6200 Wiesbaden | Procedure for operating an open refrigerated cabinet |
| US4026121A (en) * | 1975-05-20 | 1977-05-31 | Fuji Denki Seizo Kabushiki Kaisha | Defrosting in open show case of cold-air-circulation type |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3063255A (en) * | 1961-03-31 | 1962-11-13 | Ed Friedrich Inc | Refrigerated display cabinets |
| FR1568856A (en) * | 1967-01-10 | 1969-05-30 | ||
| US3675440A (en) * | 1970-12-03 | 1972-07-11 | Clark Equipment Co | Refrigerated display case |
| US3756038A (en) * | 1972-04-07 | 1973-09-04 | Emhart Corp | Refrigerated display equipment |
| DE2649572A1 (en) * | 1976-10-29 | 1978-05-11 | Fuji Electric Co Ltd | Display refrigerator cabinet with cool air frontage - has access openings and three air circulating passages with air outlets and suction inlets |
-
1979
- 1979-01-23 JP JP565079A patent/JPS54139164A/en active Pending
- 1979-02-21 CA CA322,026A patent/CA1093850A/en not_active Expired
- 1979-02-28 GB GB7907038A patent/GB2016669B/en not_active Expired
- 1979-03-01 AU AU44714/79A patent/AU523250B2/en not_active Expired
- 1979-03-05 FI FI790734A patent/FI70372C/en not_active IP Right Cessation
- 1979-03-06 ES ES478321A patent/ES478321A1/en not_active Expired
- 1979-03-06 CH CH215779A patent/CH635994A5/en not_active IP Right Cessation
- 1979-03-06 DE DE2908726A patent/DE2908726C2/en not_active Expired
- 1979-03-07 DK DK094279A patent/DK154683C/en active
- 1979-03-07 FR FR7905858A patent/FR2419485A1/en active Granted
- 1979-03-07 NO NO790767A patent/NO156591C/en unknown
- 1979-03-07 SE SE7902049A patent/SE449292B/en not_active IP Right Cessation
- 1979-03-08 IT IT20847/79A patent/IT1110355B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB865147A (en) * | 1958-02-03 | 1961-04-12 | Hussmann Refrigerator Co | Display case with adjustable refrigerated shelves |
| DE2123646A1 (en) * | 1971-05-12 | 1972-11-23 | Linde Ag, 6200 Wiesbaden | Procedure for operating an open refrigerated cabinet |
| US4026121A (en) * | 1975-05-20 | 1977-05-31 | Fuji Denki Seizo Kabushiki Kaisha | Defrosting in open show case of cold-air-circulation type |
Also Published As
| Publication number | Publication date |
|---|---|
| AU523250B2 (en) | 1982-07-22 |
| DE2908726A1 (en) | 1979-09-13 |
| CH635994A5 (en) | 1983-05-13 |
| SE7902049L (en) | 1979-09-09 |
| DK94279A (en) | 1979-09-09 |
| GB2016669B (en) | 1982-05-12 |
| NO156591C (en) | 1987-10-21 |
| AU4471479A (en) | 1979-09-13 |
| FI70372B (en) | 1986-03-27 |
| IT1110355B (en) | 1985-12-23 |
| CA1093850A (en) | 1981-01-20 |
| DE2908726C2 (en) | 1985-09-19 |
| NO790767L (en) | 1979-09-11 |
| GB2016669A (en) | 1979-09-26 |
| DK154683C (en) | 1989-06-19 |
| NO156591B (en) | 1987-07-13 |
| SE449292B (en) | 1987-04-27 |
| IT7920847A0 (en) | 1979-03-08 |
| FI70372C (en) | 1986-09-19 |
| ES478321A1 (en) | 1979-11-16 |
| FI790734A (en) | 1979-09-09 |
| FR2419485B1 (en) | 1984-06-29 |
| FR2419485A1 (en) | 1979-10-05 |
| JPS54139164A (en) | 1979-10-29 |
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