NO143954B - PROCEDURE AND DEVICE FOR DEFINING A COOL OR FREEZE DISC. - Google Patents
PROCEDURE AND DEVICE FOR DEFINING A COOL OR FREEZE DISC. Download PDFInfo
- Publication number
- NO143954B NO143954B NO780360A NO780360A NO143954B NO 143954 B NO143954 B NO 143954B NO 780360 A NO780360 A NO 780360A NO 780360 A NO780360 A NO 780360A NO 143954 B NO143954 B NO 143954B
- Authority
- NO
- Norway
- Prior art keywords
- air
- defrosting
- during
- goods
- cooling
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 238000001816 cooling Methods 0.000 claims description 35
- 238000010257 thawing Methods 0.000 claims description 28
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims 2
- 210000000056 organ Anatomy 0.000 claims 1
- 230000002441 reversible effect Effects 0.000 claims 1
- 239000002023 wood Substances 0.000 claims 1
- 239000003570 air Substances 0.000 description 51
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
- F25D2317/0684—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans the fans allowing rotation in reverse direction
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Defrosting Systems (AREA)
- Freezers Or Refrigerated Showcases (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Packaging For Recording Disks (AREA)
- Laminated Bodies (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Description
Foreliggende oppfinnelse vedrører en fremgangsmåte for avriming av kjøleelementer i en kjøle- eller frysedisk med en luftkanal, idet luften av vifter drives i sirkulasjon rundt et vareforråd, gjennom kjøleelementer i kanalen og over en åpen side av vareforrådet. Oppfinnelsen vedrører også en anordning for utførelse av fremgangsmåten. The present invention relates to a method for defrosting cooling elements in a cooling or freezing counter with an air channel, the air being driven by fans in circulation around a warehouse, through cooling elements in the channel and over an open side of the warehouse. The invention also relates to a device for carrying out the method.
For kjøling av slike disker anvendes sirkulerende luft, hvis fuktighetsinnhold med tiden avsetter seg i form av rim på kjøle-elementene i luftkanalen. For at elementenes kjøleeffekt skal kunne opprettholdes, må man med jevne mellomrom avrime elementene. For dette formål har man bl.a. anvendt elektriske varme-elementer plassert langs kjøleelementene. Man stenger, da av kjølekompressoren og tilfører en varmeeffekt på de elektriske elementer og lar viftene arbeide, slik at luftsirkulasjonen vedvarer. På denne måte kan en relativt rask avriming av elementene tilveiebringes, men dette krever også tilførsel av en vesentlig effekt og en kostbar installasjon av elektriske elementer og tilkoblingsledninger for disse. Det er derfor blitt foreslått istedenfor tilførsel av elektrisk varmeeffekt å an-vende varme fra den luft som omgir disken. For dette formål har man utført disker med spesielle luftkanaler for tilførsel av varm luft fra omgivelsene og bortføring av den kalde luft som under avrimingen er kjølet ned av kjøleelementene, slik at man ikke lenger har en sirkulerende luftmengde i disken. Foruten de ekstra luftkanaler behøver man da et system med bevegelige klaffer eller andre ledeorgan, som må stilles om før og efter avriming for at de ønskede luftveier skal oppnås. Også slike an-ordninger for avriming medfører økede omkostninger for disken, men de utgjør dessuten en ekstra kilde til driftsforstyrrelser og medfører også økede krav til tilsyn. For cooling such discs, circulating air is used, the moisture content of which is deposited over time in the form of frost on the cooling elements in the air duct. In order for the cooling effect of the elements to be maintained, the elements must be defrosted at regular intervals. For this purpose, one has, among other things, used electric heating elements placed along the cooling elements. You then switch off the cooling compressor and add a heating effect to the electrical elements and let the fans work, so that the air circulation persists. In this way, a relatively quick defrosting of the elements can be provided, but this also requires the supply of a significant effect and an expensive installation of electrical elements and connection lines for these. It has therefore been proposed to use heat from the air that surrounds the disk instead of supplying electric heat. For this purpose, counters have been designed with special air channels for the supply of warm air from the surroundings and the removal of the cold air that has been cooled by the cooling elements during defrosting, so that there is no longer a circulating amount of air in the counter. In addition to the additional air ducts, a system with movable flaps or other guide means is then needed, which must be adjusted before and after defrosting in order to achieve the desired airways. Such arrangements for defrosting also entail increased costs for the counter, but they also constitute an additional source of operational disturbances and also entail increased requirements for supervision.
Oppfinnelsen vedrører en fremgangsmåte for avriming av en kjøle-eller frysedisk med enkle og pålitelige midler, uten nevnever- The invention relates to a method for defrosting a refrigerator or freezer counter with simple and reliable means, without mention-
dig økede omkostninger og uten størreøkning av tilkoblingseffek-ten. Oppfinnelsen kjennetegnes i denne hensikt stort sett av det som angis i hovedkravets karakteristikk. Ifølge oppfinnelsen kjennetegnes en anordning for formålet av det som angis i krav 4. you increased costs and without a major increase in the connection effect. For this purpose, the invention is characterized largely by what is stated in the characteristics of the main claim. According to the invention, a device for the purpose of what is stated in claim 4 is characterized.
Oppfinnelsen skal nu beskrives nærmere under henvisning til The invention will now be described in more detail with reference to
to i fig. 1 og 2 viste frysedisker, som på figurene fremstilles i vertikalt tverrsnitt. two in fig. 1 and 2 showed freezer disks, which in the figures are produced in a vertical cross-section.
Den på fig. 1 viste frysedisk har to endevegger 10, en fremre The one in fig. 1 shown freezer counter has two end walls 10, one at the front
vegg 11, en bakre vegg 12 og en bunn 13. Alle disse deler er forsynt med hensiktsmessig varmeisolasjon. Disken hviler med føtter 14, 15 på et gulv 16. Ettersom disken er beregnet på å plasseres i en forretning på en slik måte at den passeres av kunder på høyre siden på figuren, er den fremre vegg 11 lav men forsynt med en øvre del 17 av isolerglass, som gjør at man lettere kan observere innholdet i disken. I denne er der en av plater 18, 19, 20 utført kasse for fryste varer 21. wall 11, a rear wall 12 and a bottom 13. All these parts are provided with suitable thermal insulation. The counter rests with feet 14, 15 on a floor 16. As the counter is intended to be placed in a shop in such a way that it is passed by customers on the right side of the figure, the front wall 11 is low but provided with an upper part 17 of insulating glass, which makes it easier to observe the contents of the disk. In this, one of the plates 18, 19, 20 is made into a box for frozen goods 21.
Kassen har en slik form og plassering i forhold til diskens veg-ger at en luftkanal 22 dannes mellom kassen og veggene 11, 12 The box has such a shape and location in relation to the walls of the disk that an air channel 22 is formed between the box and the walls 11, 12
samt diskens bunn 13. Under kassen inneholder luftkanalen 22 as well as the bottom of the counter 13. Under the box contains the air duct 22
en vifte 24 drevet av en motor 23 samt et kjøleelement 25, som kan være utført på i og for seg kjent måte og derfor ikke vises i alle detaljer. Kjøleelementet kan bestå av rørsløyfer med flenser og være koblet til en på i og for seg kjent måte utført kjølemaskin, som sirkulerer et kjølemedium gjennom rørsløyfene. a fan 24 driven by a motor 23 and a cooling element 25, which can be made in a manner known per se and is therefore not shown in full detail. The cooling element can consist of tube loops with flanges and be connected to a cooling machine designed in a manner known per se, which circulates a cooling medium through the tube loops.
Luftkanalens 22 bunn heller mot et avløp 26 for vann som dannes The bottom of the air channel 22 slopes towards a drain 26 for water that is formed
ved avriming av kjøleelementet 25. Bunnavløpet 26 er beregnet for tilkobling til et avløpssystem. when defrosting the cooling element 25. The bottom drain 26 is intended for connection to a drainage system.
Under normal drift av frysedisken arbeider viften 24 i en slik retning at luften i overensstemmelse med de helt opptrukne pil- During normal operation of the freezer, the fan 24 works in such a direction that the air in accordance with the fully retracted arrows
er 27 suges inn i luftkanalen 22 på figurens høyre, øvre side ned mot viften, igjennom denne og gjennom kjøleelementet 25,hvoretter den passerer oppad mellom diskens bakre vegg 12 og is 27 is sucked into the air duct 22 on the right, upper side of the figure down towards the fan, through this and through the cooling element 25, after which it passes upwards between the rear wall of the disk 12 and
kassen 18, 19, 20 med varer for deretter ved figurens venstre, øvre side å presses ut gjennom ledeorgan 28 over varene i disken i horisontal retning. Luften styres her slik at den rettes mot kanalens luftinntak på figurens høyre side. the box 18, 19, 20 with goods then at the figure's left, upper side to be pushed out through guide means 28 over the goods in the counter in a horizontal direction. The air is controlled here so that it is directed towards the duct's air intake on the right side of the figure.
Selv om ledeorganene 28 er utformet hensiktsmessig og luftmengde og lufthastighet er godt balansert, kan en viss innblanding av varm, fuktig luft fra omgivelsene ikke unngås. Da denne fuktig-het suksessivt avsettes på kjøleelementet i form av rim, må elementet avrimes. Ifølge oppfinnelsen skjer dette dels ved at luften bringes til å strømme gjennom luftkanalen 22 i motsatt retning av den normale driftsretning, dels ved at sirkulasjonen avbrytes og varm, omgivende luft tas inn gjennom ledeorganene 28, mens den av kjøleelementet avkjølte luft av ledeorganene 29, 30 ved kanalens motsatte ende styrer den utblåste luft i en retning bort fra vareforrådet og bort fra den tidligere sirku-lasjonsvei , slik at luften ikke går tilbake til ledeorganene 28 og slik at man ikke får en sirkulasjon av kald luft. Even if the guide members 28 are designed appropriately and the air quantity and air speed are well balanced, a certain mixing of warm, moist air from the surroundings cannot be avoided. As this moisture is successively deposited on the cooling element in the form of frost, the element must be defrosted. According to the invention, this occurs partly by the air being made to flow through the air duct 22 in the opposite direction to the normal operating direction, partly by the circulation being interrupted and hot, ambient air being taken in through the guide members 28, while the air cooled by the cooling element is removed by the guide members 29, 30 at the opposite end of the channel, it directs the blown air in a direction away from the goods store and away from the former circulation path, so that the air does not return to the guide means 28 and so that you do not get a circulation of cold air.
Ettersom den omgivende varme luft har en betydelig høyere tempe-ratur enn kjøleelementet 25 men har et begrenset varmeinnhold, er den riktignok anvendelig for avriming men utilstrekkelig hvis denne skal skje raskt. Derfor er anordningen ifølge oppfinnelsen utført slik at den pr. tidsenhet ved avriming tran-, sporterte luftmengde er større enn den mengde luft som sirkuleres under normal drift. Det er hensiktsmessig å utforme anordningen slik at en større luftmengde og fortrinnsvis to til fire ganger større sirkuleres pr. tidsenhet ved avriming. As the surrounding hot air has a significantly higher temperature than the cooling element 25 but has a limited heat content, it is indeed usable for defrosting but insufficient if this is to happen quickly. Therefore, the device according to the invention is made so that it per unit of time during defrosting, the amount of transported air is greater than the amount of air that is circulated during normal operation. It is appropriate to design the device so that a larger amount of air, preferably two to four times larger, is circulated per unit of time when defrosting.
For at man skal få motsatt strømningsretning av luften ved avriming, som vist med strekede piler 31, utføres ifølge oppfinnelsen viftens 24 motor 23 med egnede reguleringsorgan, slik at viften kan arbeide i begge rotasjonsretninger. For at den tilsiktedeøkning av den transporterte luftmengde skal tilveiebringes, kan man ifølge oppfinnelsen anordne motoren slik at den arbeider med høyere turtall ved avriming enn ved normal drift. Man kan imidlertid også samtidig med dette eller som er-statning for dette utforme viften med større luftkapasitet når den arbeider med avriming enn når den arbeider i normal drift. Ved en lang disk kan flere vifter med motorer være anordnet i luftkanalen. Avkjølingen kan skje ved et efter diskens lengde tilpasset kjøleelement eller ved flere elementer. I fig. 2 vises en frysedisk med to separate vareforråd i varekasser 32, In order to obtain the opposite flow direction of the air during defrosting, as shown by dashed arrows 31, according to the invention, the motor 23 of the fan 24 is made with suitable regulating means, so that the fan can work in both directions of rotation. In order for the intended increase in the amount of transported air to be provided, according to the invention, the engine can be arranged so that it operates at a higher speed during defrosting than during normal operation. However, at the same time or as a substitute for this, the fan can also be designed with a larger air capacity when it is working with defrosting than when it is working in normal operation. In the case of a long disk, several fans with motors can be arranged in the air duct. Cooling can be done by a cooling element adapted to the length of the disk or by several elements. In fig. 2 shows a freezer counter with two separate stores of goods in goods boxes 32,
33 og en delvis felles, vertikal luftkanal 34 mellom disse kas-ser. Disken består av to endesider 35, av hvilke den ene er synlig på figuren, to langsider 36, 37, utformet slik at disken er tilgjengelig for kunder fra begge sider, samt en bunn 38. Disken hviler med føtter 14, 15 på et gulv 16. Under normal drift suges luft inn oventil i midtkanalen 34 ifølge pilene 39 og trekkes ned mot vifter 41 drevet av motorer 40, hvilke vifter er felles for en fortsatt kanal 42 til venstre og en fortsatt kanal 43 til høyre på figuren. Luften passerer i kanalen 42 33 and a partially shared, vertical air duct 34 between these boxes. The counter consists of two end sides 35, one of which is visible in the figure, two long sides 36, 37, designed so that the counter is accessible to customers from both sides, as well as a bottom 38. The counter rests with feet 14, 15 on a floor 16 During normal operation, air is sucked in from above into the central channel 34 according to arrows 39 and drawn down towards fans 41 driven by motors 40, which fans are common to a continued channel 42 on the left and a continued channel 43 on the right of the figure. The air passes in channel 42
et kjøleelement 44 og i kanalen 43 et kjøleelement 45 for så å stige oppad gjennom kanaldeler 46, 47 og blåses ut gjennom ledeorgan 28 på hver side. Luften blåses her ut i horisontal retning over varene 21 og mot en midtlinje over innløpet for midtkanalen 34, hvor luften suges inn for derpå å sirkulere begge veier. a cooling element 44 and in the channel 43 a cooling element 45 to then rise upwards through channel parts 46, 47 and be blown out through guide means 28 on each side. The air is here blown out in a horizontal direction over the goods 21 and towards a center line above the inlet for the center channel 34, where the air is sucked in to then circulate both ways.
Ved avriming av frysedisken omkastes luftens strømningsretning When defrosting the freezer tray, the air flow direction is reversed
i kanalene, og den kalde luften blåses ut gjennom midtkanalen 34, som vist med strekede piler 48. Dette gjør at den luft som suges inn ved ledeorganene 28 på begge sider ikke er kald luft men varm, omgivende luft, som antydet med piler 49. Spesielle ledeorgan 50 ved kanalens 34 øvre munning retter den ved avriming utstrømmende luft oppad og bort fra den normale sirkulasjons-vei. in the channels, and the cold air is blown out through the central channel 34, as shown by dashed arrows 48. This means that the air that is sucked in at the guide members 28 on both sides is not cold air but warm, ambient air, as indicated by arrows 49. Special guide means 50 at the upper mouth of the channel 34 direct the air flowing out during defrosting upwards and away from the normal circulation path.
Også den i fig. 2 viste frysedisk har en bunn som heller og Also the one in fig. 2 shown freezer has a bottom that is more and
er utformet slik at det vann som dannes ved avriming av kjøle-elementene 44, 45 samles på et sted, fra hvilket der er avled-ningsorgan. is designed so that the water formed by defrosting the cooling elements 44, 45 is collected in a place from which there is a diversion device.
Den store luftmengde kan tilveiebringes med høyt turtall på viftene. Det lavere turtall på viftene kan man få ved spennings-nedsettende innretninger i viftemotorenes tilførselsledninger, f.eks. en transformator eller en tyristorregulering. The large amount of air can be provided with a high speed of the fans. The lower speed of the fans can be achieved by voltage-reducing devices in the fan motors' supply lines, e.g. a transformer or a thyristor regulator.
Luftens høye strømningshastighet gjør at den parallelle strøm- ning over vareflaten ikke inntrer, slik at en hel del varm luft fra omgivelsene innsuges og kan anvendes for avriming. Når så lufthastigheten nedsettes, går strømningen tilbake til normal sirkulasjon. The air's high flow speed means that the parallel flow over the product surface does not occur, so that a great deal of warm air from the surroundings is sucked in and can be used for defrosting. When the air speed is then reduced, the flow returns to normal circulation.
Rimdannelsen på kjøleelementene i en disk av det her aktuelle slag kan variere avhengig bl.a. av omgivelsenes klima. For å sikre at elementene alltid blir frie for rim under en avriming, kan man under avslutningen av avrimingen omkaste luftens strøm-ningsretning til den normale men holde kjøleelementene avstengt og bibeholde den store luftmengde pr. tidsenhet i en kort periode. Da sikres også at det under avrimingen dannede tine-vann rekker å renne bort før den normale drift begynner. For dette formål forsyner man diskens reguleringsinnretning med en forsinkelsesanordning, f.eks. et relé, for endring av tidspunktet for nedsetting av viftemotorenes hastighet og kjølekompres-sorens start efter avriming. The formation of frost on the cooling elements in a disk of the kind in question here can vary depending on, among other things, of the surrounding climate. In order to ensure that the elements are always free of frost during a defrost, during the end of the defrost, the air flow direction can be reversed to the normal one but keep the cooling elements switched off and maintain the large amount of air per unit of time for a short period. This also ensures that the thaw water formed during defrosting has time to drain away before normal operation begins. For this purpose, the disc's regulation device is provided with a delay device, e.g. a relay, for changing the time for reducing the speed of the fan motors and the start of the cooling compressor after defrosting.
De to figurer angis å vise frysedisker, men også kjøledisker kan være utført på denne måte. The two figures are indicated to show freezer counters, but also refrigerated counters can be designed in this way.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7701081A SE403961B (en) | 1977-02-01 | 1977-02-01 | METHOD OF DEFROSTING COOLING ELEMENTS IN A FREEZER DISPING DEVICE FOR IMPLEMENTING THE SET |
| SE7701572A SE7701572L (en) | 1977-02-11 | 1977-02-11 | DEFROST SET AND DEVICE DEVICE AND DEVICE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO780360L NO780360L (en) | 1978-08-02 |
| NO143954B true NO143954B (en) | 1981-02-02 |
| NO143954C NO143954C (en) | 1981-05-13 |
Family
ID=26656777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO780360A NO143954C (en) | 1977-02-01 | 1978-02-01 | PROCEDURE AND DEVICE FOR DEFINING A COOL OR FREEZE DISC. |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS53124369A (en) |
| AU (1) | AU509659B2 (en) |
| DE (1) | DE2804008A1 (en) |
| DK (1) | DK150124B (en) |
| ES (2) | ES466507A1 (en) |
| FI (1) | FI64239C (en) |
| FR (1) | FR2378482A1 (en) |
| GB (1) | GB1573901A (en) |
| IT (1) | IT1102264B (en) |
| NO (1) | NO143954C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE414338B (en) * | 1978-10-20 | 1980-07-21 | Electrolux Ab | DEVICE FOR COOLED OR FROZEN GOODS |
| US4295340A (en) * | 1979-02-14 | 1981-10-20 | Tyler Refrigeration Corporation | Refrigerated display case having ambient air defrost |
| US4338792A (en) * | 1979-01-31 | 1982-07-13 | Tyler Refrigeration Corporation | Refrigerated merchandiser display case with defrost device |
| USRE31909E (en) * | 1979-02-14 | 1985-06-11 | Tyler Refrigeration Corporation | Refrigerated display case having ambient air defrost |
| US4457139A (en) * | 1980-02-01 | 1984-07-03 | Tyler Refrigeration Corporation | Refrigerated display case having ambient air defrost |
| US4341081A (en) * | 1979-02-14 | 1982-07-27 | Tyler Refrigeration Corporation | Multiband open front refrigerated case with air defrost |
| FR2473294A1 (en) * | 1979-02-14 | 1981-07-17 | Tyler Refrigeration Corp | Refrigerated display cabinet for goods - has two air pipes, with two air inlets and outlets, and two fans to circulate cold air |
| US4514988A (en) * | 1979-02-14 | 1985-05-07 | Tyler Refrigeration Corporation | Refrigerated display case having ambient air defrost |
| US4314453A (en) * | 1979-07-25 | 1982-02-09 | Tyler Refrigeration Corporation | One and a half band refrigerated display case |
| FR2484065A1 (en) * | 1980-06-06 | 1981-12-11 | Helpac Applic Thermodyn Solair | IMPROVEMENTS ON HEAT PUMPS |
| GB2251928A (en) * | 1991-01-17 | 1992-07-22 | Imi Cornelius | Chilled display apparatus |
| US5475988A (en) * | 1994-11-17 | 1995-12-19 | Delaware Capital Formation Inc. | Refrigerated display case with an improved air flow control and a contaminant control apparatus |
| CN112325543B (en) * | 2020-11-26 | 2023-12-22 | 珠海格力电器股份有限公司 | Refrigerator, control method thereof, controller and computer readable storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514647A (en) * | 1974-07-01 | 1976-01-14 | Sanyo Electric Co | Shookeesuno jososochi |
| JPS51118141A (en) * | 1975-04-10 | 1976-10-16 | Fuji Electric Co Ltd | Defrosting method of opened show case freezer by air curtain |
-
1978
- 1978-01-17 DK DK023378AA patent/DK150124B/en not_active Application Discontinuation
- 1978-01-18 GB GB2025/78A patent/GB1573901A/en not_active Expired
- 1978-01-27 FI FI780277A patent/FI64239C/en not_active IP Right Cessation
- 1978-01-27 AU AU32813/78A patent/AU509659B2/en not_active Expired
- 1978-01-31 IT IT47857/78A patent/IT1102264B/en active
- 1978-01-31 DE DE19782804008 patent/DE2804008A1/en not_active Ceased
- 1978-01-31 ES ES466507A patent/ES466507A1/en not_active Expired
- 1978-02-01 NO NO780360A patent/NO143954C/en unknown
- 1978-02-01 FR FR7802728A patent/FR2378482A1/en active Granted
- 1978-02-01 JP JP937678A patent/JPS53124369A/en active Pending
- 1978-05-08 ES ES469581A patent/ES469581A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FI64239C (en) | 1983-10-10 |
| AU509659B2 (en) | 1980-05-22 |
| NO780360L (en) | 1978-08-02 |
| FR2378482B1 (en) | 1982-12-31 |
| NO143954C (en) | 1981-05-13 |
| IT7847857A0 (en) | 1978-01-31 |
| AU3281378A (en) | 1979-08-02 |
| DK23378A (en) | 1978-08-02 |
| JPS53124369A (en) | 1978-10-30 |
| ES469581A1 (en) | 1979-01-01 |
| ES466507A1 (en) | 1978-10-01 |
| FI64239B (en) | 1983-06-30 |
| GB1573901A (en) | 1980-08-28 |
| FI780277A (en) | 1978-08-02 |
| IT1102264B (en) | 1985-10-07 |
| DE2804008A1 (en) | 1978-08-03 |
| DK150124B (en) | 1986-12-08 |
| FR2378482A1 (en) | 1978-08-25 |
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