US3233423A - Refrigerated cabinet with circulating air panels - Google Patents

Refrigerated cabinet with circulating air panels Download PDF

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Publication number
US3233423A
US3233423A US247245A US24724562A US3233423A US 3233423 A US3233423 A US 3233423A US 247245 A US247245 A US 247245A US 24724562 A US24724562 A US 24724562A US 3233423 A US3233423 A US 3233423A
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US
United States
Prior art keywords
air
stream
passages
access opening
streams
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.)
Expired - Lifetime
Application number
US247245A
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English (en)
Inventor
Beckwith Sterling
Robert E Vogel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dual Jet Refrigeration Co
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Dual Jet Refrigeration Co
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Filing date
Publication date
Application filed by Dual Jet Refrigeration Co filed Critical Dual Jet Refrigeration Co
Priority to US247245A priority Critical patent/US3233423A/en
Priority to CH1584763A priority patent/CH411009A/de
Priority to NO151368A priority patent/NO119359B/no
Priority to DED43265A priority patent/DE1300135B/de
Application granted granted Critical
Publication of US3233423A publication Critical patent/US3233423A/en
Anticipated expiration legal-status Critical
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    • 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

Definitions

  • This invention relates to an improved refrigeration system which is characterized by a unique arrangement for efiiciently maintaining refrigeration.
  • the invention is particularly directed to devices of the type which are capable of maintaining a refrigerated state within an enclosed space while still providing an opening for access to the contents.
  • the air curtain in these constructions is adapted to be formed of adjacent panels of air, with the innermost panel comprising a refrigerated cold air panel, and with one or more outer panels having temperatures approaching the ambient temperature. It has been found that it is desirable to recirculate the inner cold air panel and to provide means for circulating the adjacent guard panels, to conserve the refrigeration and to maintain the enclosed space in a satisfactory refrigerated state.
  • assemblies which include nozzles extending across the bottom edge of the access opening to direct the air panels upwardly across the opening towards inlets which extend across the top side of the access opening.
  • the nozzles are located across the upper edge for projecting the air panels downwardly toward inlets arranged aacross the bottom edge.
  • the air nozzles be located across one of the lateral edges of the opening for directing the corresponding air panels across the opening toward inlets in the opposite edge. Because of the more desirable effect of gravity on the higher density cold air, it has been found preferable to provide the air curtain with a downward movement from nozzles across the top to inlets across the bottom. The following description will refer to this preferred construction, although it will be understood that the con cepts to be described are also applicable to other directions of flow.
  • FIGURE 1 is a schematic elevation in section of a refrigerated enclosure characterized by the features of this invention.
  • FIGURES 2 and 3 illustrate schematically alternative passage and nozzle constructions characterized by the features'of this invention.
  • the improvements of this invention are directed to refrigerated enclosures of the type which define an access opening in one wall, which is provided for communication with the otherwise enclosed space.
  • the enclosures are provided with a plurality of nozzles arranged in side-by-side relationship across one edge of an access opening, and corresponding inlets are located across an opposite edge of the access opening.
  • the inner nozzles and inlets are provided for the passage of refrigerated streams across the access opening, while the outer nozzles and inlets circulate progressively warmer air panels.
  • the inner refrigerated streams are circulated through passages having refrigeration coils or the like situated therein, and one or more of the outer streams may also be refrigerated.
  • one or more of the inner streams of air are powered as by circulating fans located in the cabinet passages.
  • An outer stream of air is adapted to circulate through an outer passage.
  • circulating fans are not provided for powering this stream.
  • This outer stream is adapted to circulate by means of contact with an adjacent powered stream as the air panels formed by the streams pass across the access opening of the cabinet. Since the outer panel is effectively dragged along through frictional contact with the adjacent panel of the powered stream, the outer stream will inherently move at a slower average speed.
  • adjacent streams are powered so that they move at different speeds to accomplish the desired effect.
  • this form of the invention provides for a greater speed in the innermost of two adjacent streams, with progressively decreasing speeds prevailing in panels formed by outer streams.
  • a cabinet having a pair of inner powered streams with an outer stream circulated through contact with an adjacent powered stream represents one possible combination of the above described concepts.
  • the accompanying drawing illustrates a refrigerated cabinet which is characterized by means for practicing the invention.
  • the cabinet includes a top wall 12, bottom wall ld, back wall. 16 and afront wall 18.
  • the structure defined by thesewalls is located on a support 20.
  • the frontwall 18 defines an opening 22 which provides access ro-an enclosed refrigerated space 24.
  • the inner wall 26 defines the extent of the refrigerated space.
  • a pair of partitions 28 and 30 are located intermediate the inner andouter walls and define with these walls passages -32, 34, and 36.- These passages confine air streams which are adaptedto be circulated through the cabinet.
  • the streams inthe embodiment illustrated form laminar panels-38,- 40, and 42 which pass across the access opening.
  • Screens 48 can be provided over inlet openings 46 for -thepassages in order to prevent entry-of insects or othenforeign material.-
  • Nozzles 44 are provided at theendsof each of the passages, and the air streams pass through these nozzles toward inlets46 which communicate with the passages at the opposite end of the access opening.
  • the nozzles 44 preferably comprise constructions of the type disclosed in co-pending application Ser; No. 91,875 entitled Refrigerated Display Case and Elements Thereof. Such nozzles may comprise aplurality of parallel, longitudinally spaced vanes or members which subdivide the noz zle into a number of closely separated parallel passages.
  • the nozzles form a continuation of the passages which confine the streams circulating through the cabinet housing i
  • the nozzle sections are formed of honeycomb which may be manufactured of sheet aluminum. The vmost satisfactory honeycomb sections havea depth greater than /2 inch and preferably greaterthan one to two inches so that streams of air issuing from the honeycomb will be guides in laminar flow across the access opening in the front wall of the cabinet.-
  • the inner passage 36 is provided with a circulating-fan 50 and a refrigeration means 52.
  • the air panel formed in this passage is adapted to be circulated by means of the fan into contact with the refrigeration means and then passes out. throught-he innermost nozzle 44-as the refrigerated panel 42.
  • the innermost stream is thus the coldest stream, while the streams and 38- are progressively warmer.
  • this arrangement permits access through the front opening of the cabinet while still providing an effective refrigerating operation.
  • a circulating fan 54 is provided for the intermediate In accordance with the concepts of this invention, the fan 54 is adapted to operate at lower speed so that the panel 40 will move more slowly than the panel 42.
  • the outer passage 32 could be eliminated, providing either two passages each having a circulating fan, or two passages with only the fan 5.4. If three passages are retained, alow capacity circulating fan could be provided for the outer stream.
  • nonpowered stream could be employed in combination with two or more inner streams which operate at the same speed.
  • differential operation of the outer stream even if the same speeds prevail in the two inner streams.
  • fast moving innermost stream could be utilized in combination with twoor more outer streams moving at the same speed.
  • the outermost stream 38 will create a minimum of turbulence with the ambient air at the face 62 of this stream. This is the case, since the average velocity of this stream is low, and since the outermost portions of this stream will necessarily have 2. below average velocity. Accordingly, the small turbulence created does not cause inflow of warm air to any great extent.
  • the speed of the inner refrigerated stream is maintained at about 400 ft. per minute, while the adjacent guard panel is moved at about 275 ft. per minute. Where an outer panel is employed, it is pulled along at an average speed between 50 and 75 ft. per minute. As previously suggested however, the relative speeds are determined with a view toward maintaining laminar flow and eliminating turbulence. It will be understood that many combinations of speed are available for use.
  • the various speed values can be changed to suit different conditions such as the desired temperature within the cabinet, the prevailing ambient temperature and similar conditions. It has been found that speeds in the inner panel in excess of 300 ft. per minute provide the results of this invention, while the adjacent guard panel can be maintained at speeds between 200 and 300 ft. per minute. The true limiting factor on the values, however, is related to the effect of the speeds on the turbulence in the various planes made up by the faces and interfaces of the streams. Thus, the speed of the adjacent guard panel is maintained at a sufficiently high level to provide slippage between these laminar streams thereby avoiding turbulence at the interface of these streams. If an outer panel is employed, the speed is preferably maintained below about 100 ft. per minute, or at a level which minimizes creation of turbulence between the stationary ambient air and the slow moving guard panel.
  • the invention is intended to cover the use of means adapted to control the movement of portions of a panel, such as the panel 40, whereby the innermost portions of the panel move faster than adjacent portions, with a progressive decrease in speed to the outer portions.
  • FIGURES 2 and 3 illustrate two examples of means capable of effecting this result. It will be appreciated from the following discussion that variations in the design of these means will produce substantially the same results and various other mechanisms for producing these results will be obvious to skilled observers.
  • FIGURE 2 The structure shown in FIGURE 2 comprises a passage 70 extending to an outlet opening 72.
  • a honeycomb section 72 is fitted into the outlet in the manner previously described.
  • a plurality of vanes 76 are positioned to extend across the passage upstream of the outlet and it will be noted that these vanes are equally spacedapart at their leading edges. The spacing between the vanes changes toward the trailing edges thereof in a manner such that a progressively increasing spacing toward the outside of the passage results at the exit ends of the vanes.
  • the vanes 76 When a stream of air is circulating through the passage 70, the vanes 76 will divide the streams into equal portions. Since the same amount of air must pass through openings of a different volume, the speeds of the air will vary in a corresponding manner. By providing the progressively increasing openings toward the outside of the passage 70, the innermost stream will move faster than the adjacent stream and this adjacent stream will move faster than the next stream and so on. When these portions of the streams pass through the honeycomb section and across the access opening, they will move at different speeds, however, the speeds are regulated by the design of the vanes so that turbulence will not be set up by the adjacent portions of the stream. Accordingly, these portions will move as individual laminar panels across the access opening.
  • FIGURE 3 illustrates an alternative structure which includes a passage provided with a honeycomb sec tion 82.
  • the passages in the honeycomb section are shorter in the innermost portions of this section and become progressively longer toward the outer portions of the honeycomb. With this arrangement, the air passing through the section will move faster through the inner portions thereof since there will be less drag in these portions.
  • the air panel passing out of the honeycomb section will comprise a plurality of individual sections moving progressively slower in a direction toward the outside of the cabinet.
  • the provision of the differential velocities in the moving streams preserves refrigeration and, at the same time, effects uniformity of temperature within the enclosure.
  • the elimination of a circulating fan for the outer stream decreases the original cost of the apparatus and provides greater economy in its operation.
  • the provision of the third circulating stream also acts as an additional buffer or barrier, preventing inflow of heat.
  • the provision of a third circulating stream and its associated passage provides for catching of relatively cold air which would otherwise spill onto the floor outside the cabinet. By avoiding loss of this air, a maximum amount of refrigeration is preserved and, in addition, discomfort to those standing at the front of the cabinet is avoided.
  • a refrigerated cabinet of the type which defines an access opening in one wall communicating an otherwise enclosed space with the ambient atmosphere, and which is provided with a plurality of air inlets and a plurality of air nozzles, said inlets and nozzles extending in side-by-side relationship across opposite edges of said access opening, passages communicating each of the corresponding inlets and nozzles, said passages being independent and being separately defined by the top, bottom and back walls of said cabinet whereby the passages are out of communication with each other and with said enclosed space except through said inlets and nozzles, and
  • refrigeration means disposed in at least one of said passages to refrigerate at least the innermost stream passing through said passages and across said access opening, the improvement comprising means for circulating the streams of air through said passages and across said access opening in the form of panels, said circulating means being located in each passage except in the passage containing the outermost stream, said outermost stream being circulated through contact of the panel formed thereby with the moving panel adjacent thereto as these panels cross said access opening.
  • a refrigerated cabinet defining an access opening in one wall communicating the otherwise enclosed space with the ambient atmosphere, at least two passages defined in said cabinet each terminating at one end in an air inlet and at the other end in an air nozzle, said passages being independent and being separately defined by the top, bottom and back walls of said cabinet whereby the passages are out of communication with each other and with said enclosed space except through said inlets and nozzles, said inlets and nozzles being disposed in side-by-side relationship on opposite sides of said access opening, and refrigeration means located in at least one of said passages for refrigerating at least the stream of air passing through the innermost passage, the improvement comprising circulating mean-s located in the passage confining said refrigerated stream and in the passage immediately adjacent thereto, and means for operating the circulating means in the passage confining the refrigerated stream at a higher rate than the circulating means in said adjacent passage whereby the innermost air.
  • panel formed by said refrigerated stream as it crosses said access opening is adapted to move at a greater speed than the adjacent panel, said circulating means being adapted to maintain the relative rates of speed of said panels Within limits permitting slipping between the panels and avoiding significant turbulence between panels including a third passage located outwardly of the two other passages and having an air inlet and air nozzle at its ends, said third passage confining a stream of air which forms an air panel passing in contact with said adjacent panel, this contact providing for circulation of the stream in said third passage.
  • passages comprising an inner passage, an intermediate passage and an outer passage, each of said passages terminating at one end in an air inlet and at the other end in an air nozzle, saidpassages being independent andbeing separately defined by the top, bottom and back walls of said cabinet whereby the passages are out of communication with each other and with said enclosed space except through said inlets and nozzles, saidinlets and nozzles being disposed in side-by-side relationship on opposite sides of said access opening, and refrigeration means located in at least said inner passage, the improvement comprising means for circulating streams of air through said passages thereby forming three adjacent moving panels of air across said access opening, said circulating means comprising fans in each of said inner and intermediate passages, the fan in saidinner passage being adapted to circulate the stream in the inner passage at a speed greater than the stream in the intermediate passage, the stream in said outer passage being circulated through contact of the outermost panel with the intermediate panel,
  • a refrigerated cabinet defining an access opening in one wall communicating the otherwise enclosed space with the outside atmosphere, .at least two passages defined in said cabinet each terminating at one end in an air inlet and at the other end in an air nozzle, said passages being independent andbeing separately defined by the top, bottom and back Walls of said cabinet whereby the passages are out of communication with each other and with said enclosed space except through said inlets and nozzles, said inlets and nozzles being disposed in sideby-side relationship on opposite sides of said access opening, and refrigeration means located in atleast one of said passages for refrigeration of at least thestreams of air passage throughthe innermost passage, the improvement comprising means providing for circulation of streams of air through said passages thereby.
  • said circulating means including at least one fan located in the innermost passage, the streams in a passage adjacent said innermost passage being circulated through contact of the adjacent air panel with the panel corresponding to said innermost stream, said circulating means being adapted to maintain the relative rates of speed of said panels within limits permitting slipping between the panels and avoiding significant turbulence between panels.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
US247245A 1962-12-26 1962-12-26 Refrigerated cabinet with circulating air panels Expired - Lifetime US3233423A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US247245A US3233423A (en) 1962-12-26 1962-12-26 Refrigerated cabinet with circulating air panels
CH1584763A CH411009A (de) 1962-12-26 1963-12-23 Kühltruhe
NO151368A NO119359B (de) 1962-12-26 1963-12-23
DED43265A DE1300135B (de) 1962-12-26 1963-12-27 Kuehlmoebel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US247245A US3233423A (en) 1962-12-26 1962-12-26 Refrigerated cabinet with circulating air panels

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US3233423A true US3233423A (en) 1966-02-08

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US (1) US3233423A (de)
CH (1) CH411009A (de)
DE (1) DE1300135B (de)
NO (1) NO119359B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4224771A (en) * 1977-07-28 1980-09-30 Dunsmore Howard L Method and apparatus for reducing the rate of heat transfer
US4397121A (en) * 1977-07-28 1983-08-09 Dunsmore Howard L Method and apparatus for reducing the rate of heat transfer
US5357767A (en) * 1993-05-07 1994-10-25 Hussmann Corporation Low temperature display merchandiser
US6094931A (en) * 1998-10-30 2000-08-01 Daewoo Electronics Co., Ltd. Refrigerator having dual air velocity generating apparatus for air curtain flow
US20040163401A1 (en) * 2003-02-26 2004-08-26 Alahyari Abbas A. Refrigerated display merchandiser with improved air curtain
US20050138943A1 (en) * 2003-01-07 2005-06-30 Carrier Commercial Refrigeration, Inc. Multi-band air curtain separation barrier
US20060199496A1 (en) * 2005-02-16 2006-09-07 Hussmann Corporation Air louver for a refrigerated display case
US20070251253A1 (en) * 2004-09-30 2007-11-01 Carrier Corporation Curtain Air Admission Assembly
NL2002604C2 (nl) * 2008-03-09 2009-11-03 Handelsmij Willy Deweerdt Bvba Inrichting voor het genereren van een luchtwand bij een staand koelmeubel.
US20100291856A1 (en) * 2007-10-16 2010-11-18 Handelsmaatschappij Willy Deweerdt Bvba Device for generating an air wall
US9370262B2 (en) * 2014-06-27 2016-06-21 Wirth Research Limited Open refrigerated display case and a flow stabilizing device
US20170258247A1 (en) * 2013-04-08 2017-09-14 Heatcraft Refrigeration Products Llc Deflector for Display Cases
US20170280896A1 (en) * 2016-03-31 2017-10-05 Panasonic Intellectual Property Management Co., Ltd. Showcase and operation method thereof
US20170340141A1 (en) * 2014-10-28 2017-11-30 Aht Cooling Systems Gmbh Refrigeration unit
US11576501B2 (en) * 2019-11-08 2023-02-14 Hill Phoenix, Inc. Guide vane for refrigerated display case

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012018155A1 (de) * 2012-09-14 2014-03-20 Aichinger Gmbh Umluftkühltheke und Verfahren zum Betrieb einer Umluftkühltheke
DE102013007922A1 (de) * 2013-05-10 2014-11-13 Aichinger Gmbh Umluftkühltheke sowie Verfahren zum Betrieb einer Umluftkühltheke
DE102020103843A1 (de) 2020-02-13 2021-08-19 Ake Ausseer Kälte- Und Edelstahltechnik Gmbh Temperierverfahren zum Temperieren von Waren in einem Umluftmöbel und Umluftmöbel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1298655A (en) * 1916-08-08 1919-04-01 Emil A Briner System of air distribution.
US2268014A (en) * 1936-01-24 1941-12-30 Charles P Bridges Diffuser
US2794325A (en) * 1956-03-13 1957-06-04 Gen Motors Corp Refrigerated display case
US3021776A (en) * 1958-02-19 1962-02-20 Barber Colman Co Method and apparatus for ventilating laboratory fume hoods
US3063252A (en) * 1961-08-17 1962-11-13 Lamb Frank Gilbert Upright refrigerator showcase
US3091942A (en) * 1961-04-10 1963-06-04 Hussmann Refrigerator Co Food merchandiser

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725726A (en) * 1952-01-14 1955-12-06 Tyler Refrigeration Corp Air flow control for refrigerators
DE1032763B (de) * 1955-07-30 1958-06-26 Tyler Refrigeration Corp Kuehlen von Lebensmitteln in offenen Behaeltern
US2862369A (en) * 1956-08-30 1958-12-02 Edward W Simons Air conditioned display compartment and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1298655A (en) * 1916-08-08 1919-04-01 Emil A Briner System of air distribution.
US2268014A (en) * 1936-01-24 1941-12-30 Charles P Bridges Diffuser
US2794325A (en) * 1956-03-13 1957-06-04 Gen Motors Corp Refrigerated display case
US3021776A (en) * 1958-02-19 1962-02-20 Barber Colman Co Method and apparatus for ventilating laboratory fume hoods
US3091942A (en) * 1961-04-10 1963-06-04 Hussmann Refrigerator Co Food merchandiser
US3063252A (en) * 1961-08-17 1962-11-13 Lamb Frank Gilbert Upright refrigerator showcase

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397121A (en) * 1977-07-28 1983-08-09 Dunsmore Howard L Method and apparatus for reducing the rate of heat transfer
US4224771A (en) * 1977-07-28 1980-09-30 Dunsmore Howard L Method and apparatus for reducing the rate of heat transfer
US5357767A (en) * 1993-05-07 1994-10-25 Hussmann Corporation Low temperature display merchandiser
US6094931A (en) * 1998-10-30 2000-08-01 Daewoo Electronics Co., Ltd. Refrigerator having dual air velocity generating apparatus for air curtain flow
US20050138943A1 (en) * 2003-01-07 2005-06-30 Carrier Commercial Refrigeration, Inc. Multi-band air curtain separation barrier
US7162882B2 (en) 2003-01-07 2007-01-16 Carrier Corporation Multi-band air curtain separation barrier
US20090255287A1 (en) * 2003-02-26 2009-10-15 Hill Phoenix, Inc. Refrigerated display merchandiser with improved air curtain
US20040163401A1 (en) * 2003-02-26 2004-08-26 Alahyari Abbas A. Refrigerated display merchandiser with improved air curtain
US7681409B2 (en) 2004-09-30 2010-03-23 Hill Phoenix, Inc. Curtain air admission assembly
US20070251253A1 (en) * 2004-09-30 2007-11-01 Carrier Corporation Curtain Air Admission Assembly
US8858309B2 (en) 2005-02-16 2014-10-14 Hussman Corporation Air louver for refrigerated display case
US20090223237A1 (en) * 2005-02-16 2009-09-10 Hussmann Corporation Air louver for refrigerated display case
US7497770B2 (en) 2005-02-16 2009-03-03 Hussmann Corporation Air louver for a refrigerated display case
US20060199496A1 (en) * 2005-02-16 2006-09-07 Hussmann Corporation Air louver for a refrigerated display case
US9551500B2 (en) 2007-10-16 2017-01-24 Handelsmaatschappij Willy Deweerdt Bvba Device for generating an air wall
US20100291856A1 (en) * 2007-10-16 2010-11-18 Handelsmaatschappij Willy Deweerdt Bvba Device for generating an air wall
WO2009113848A3 (en) * 2008-03-09 2009-11-05 Handelsmaatschappij Willy Deweerdt Bvba Device for generating an air wall in an upright refrigerated cabinet
CN101965141B (zh) * 2008-03-09 2013-03-13 汉德尔斯马克阿皮尼威利德维尔特私营有限责任公司 在直立式冷藏柜内产生空气壁的装置
NL2002604C2 (nl) * 2008-03-09 2009-11-03 Handelsmij Willy Deweerdt Bvba Inrichting voor het genereren van een luchtwand bij een staand koelmeubel.
US20170258247A1 (en) * 2013-04-08 2017-09-14 Heatcraft Refrigeration Products Llc Deflector for Display Cases
US10383459B2 (en) * 2013-04-08 2019-08-20 Kysor Warren Epta Us Corporation Deflector for display cases
US9370262B2 (en) * 2014-06-27 2016-06-21 Wirth Research Limited Open refrigerated display case and a flow stabilizing device
US20170208967A1 (en) * 2014-06-27 2017-07-27 Wirth Research Limited An Open Refrigerated Display Case and a Flow Stabilizing Device
US20170340141A1 (en) * 2014-10-28 2017-11-30 Aht Cooling Systems Gmbh Refrigeration unit
US20170280896A1 (en) * 2016-03-31 2017-10-05 Panasonic Intellectual Property Management Co., Ltd. Showcase and operation method thereof
CN107259879A (zh) * 2016-03-31 2017-10-20 松下知识产权经营株式会社 陈列柜以及陈列柜的运转方法
US10646054B2 (en) * 2016-03-31 2020-05-12 Panasonic Intellectual Property Management Co., Ltd. Showcase and operation method thereof
US11576501B2 (en) * 2019-11-08 2023-02-14 Hill Phoenix, Inc. Guide vane for refrigerated display case

Also Published As

Publication number Publication date
DE1300135B (de) 1969-07-31
NO119359B (de) 1970-05-11
CH411009A (de) 1966-04-15

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