US3256799A - Nozzle construction for refrigerated cabinets - Google Patents

Nozzle construction for refrigerated cabinets Download PDF

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Publication number
US3256799A
US3256799A US329047A US32904763A US3256799A US 3256799 A US3256799 A US 3256799A US 329047 A US329047 A US 329047A US 32904763 A US32904763 A US 32904763A US 3256799 A US3256799 A US 3256799A
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US
United States
Prior art keywords
air
stream
passages
nozzles
passage
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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
US329047A
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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
Original Assignee
Dual Jet Refrigeration Co
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
Priority to BE656891D priority Critical patent/BE656891A/xx
Application filed by Dual Jet Refrigeration Co filed Critical Dual Jet Refrigeration Co
Priority to US329047A priority patent/US3256799A/en
Priority to GB42731/64A priority patent/GB1082235A/en
Priority to CH1493464A priority patent/CH431578A/de
Priority to NL6413832A priority patent/NL6413832A/xx
Priority to DE6607439U priority patent/DE6607439U/de
Priority to DE19641451078 priority patent/DE1451078A1/de
Priority to DK604064AA priority patent/DK118959B/da
Application granted granted Critical
Publication of US3256799A publication Critical patent/US3256799A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains

Definitions

  • This invention relates to improved constructions for use in the handling of two or more air curtains which are to be moved in side-by-side relationship. Specifically, the invention is directed to novel constructions which are designed to effect the character of the moving air curtains whereby they can be moved in a highly efficient manner.
  • nozzles extending across the bottom edge of the access opening to direct the Iair 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 Iacross 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. llhe following description will refer to this preferred construction, although it will be understood that the concepts to be described are also applicable to other directions of ow.
  • Loss of refrigeration can be attributed to a substantial degree to turbulence which is set up between moving air streams and still air adjacent the moving air streams. Specifically, it has been found that the movement of a stream adjacent still air or adjacent a stream moving at a substantially different speed will create turbulence and will result in a whipping action.
  • the moving streams of air when characterized by such action, move out of their intended paths periodically, and large masses of the air can be completely lost insofar as the circulating streams are concerned. Where these masses are refrigerated, the natural result is to increase the load on the refrigerating means for the cabinet so that the loss of refrigeration can be accommodated.
  • FIGURE 1 is an elevational View partly cut away of a refrigerated cabinet characterized by the features of this invention
  • FIGURE 2 is an enlarged fragmentary view in section illustrating one form for the nozzle constructions of this invention
  • FIGURE 3 is an enlarged fragmentaryv View in section illustrating an alternative nozzle construction
  • FIGURE 4 is an enlarged fragmentary view in section illustrating an additional form of a nozzle construction
  • U FIGURE 5 is an enlarged fragmentary view in section illustrating a further alternative form of nozzle construcion
  • FIGURE 6 is an enlarged fragmentary view in section lllustrating another form of nozzle construction
  • FIGURE 7 is :a fragmentary plan view of air passage inean suitable for use in the construction of FIGURE
  • FIGURE 8 is a fragmentary view of an alternative form of air passage means suitable for use in the construction of FIGURE 6.
  • the improvements of this invention are directed to constructions which employ air curtains moving in side-by-side relationship in an unconfined manner. These improvements are specifically directed to refrigerated enclosures of the type which define an access opening in one wall whereby communication with the space within the enclosure can be accomplished.
  • the enclosures or cabinets of this invention 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 the opposite edge of the access opening.
  • the inner nozzles and inlets are provided for the passage of a refrigerated stream across the access opening while the adjacent outer nozzles and inlets circulate progressively warmer air panels.
  • the inner refrigerated stream is circulated through a passage having refrigeration coils located therein and one or more of the outer adjacent streams may also be refrigerated.
  • honeycomb material is preferably employed for the construction of these nozzles since this material is available in a form which is suitable for the purposes of this invention. Thus, this material is characterized by a plurality of small passages aligned in parallel relationship and the material is also adapted to be provided in a greater number of shapes and sizes. It will be understood, however, that the provision of other constructions which have the same characteristics as honeycomb materials is contemplated for use in accordance with this invention.
  • the nozzles employed in the cabinets of this invention are designed whereby they will affectl the rate of movement of the streams of air which pass out of the nozzles for movement across the access opening of the cabinet.
  • the nozzles are designed whereby the outer portions of the streams which contact the ambient air, or which contact slower moving air streams, are passed across the opening at a relatively low speed to effect the desired decrease in turbulence.
  • the nozzle constructions are also capable of affecting the speed of the air streams whereby approximately the same rate of movement at the interface of adjacent panels can be maintained.
  • This ⁇ capability of the nozzle constructions serves to maintain a high degree of laminar ow in the air streams which also results in a more uniform temperature condition in the adjacent streams. This condition has also been recognized as a means for increasing the efficiency of operation.
  • FIGURE l a refrigerated cabinet having nozzle means characterized by the features of this invention.
  • the cabinet 10 includes a top wall 12, a bottom wall 14, a back wall 16 and a front wall 18.
  • the front wall 18 defines an opening 20 which provides access to the interior 22 of the refrigerated cabinet.
  • An inner wallv 24 defines the extent of the refrigerated space.
  • a partition 26 is formed to define an inner passage 28 and an outer passage 30 in the construction.
  • the inner passage 28 carries a -refrigerating means 32 and a circulating fan 34 provides for movement Yof air past the refrigerating means and through the passage 28.
  • a similar circulating fan 36 is provided for the outer passage 30.
  • Inlets 38 are provided for eachof the passages 28 and 3f).
  • the streams 40 and 32 which cross the access opening pass into these inlets and are driven through the passages to outlet nozzles 44 and 46.
  • Screens may be included over the inlets 38 to prevent entry of insects or other foreign material into the passages.
  • the nozzle lconstruction 46 provided for the inner passage 28 comprises a honeycomb section having a plurality of aligned passages extending parallel to the walls which dene the passage 28 beyond the corner 48.
  • the edges 50 of the nozzles begins at a point below the wall 52 which defines the lower extent of the pas'- sage 28.
  • the stream of air in the passage 28 will be preferentially directed to the outer passages of the nozzle 46 by reason of this arrangement. It has been found that the inner portions of the stream 42 which contact the relatively still air within the cabinet move more slowly than the outer portions of this stream. This arrangement tends to reduce the possibility of turbulence between this inner stream and the air within the cabinet.
  • the nozzle for the outer stream is formed in two sections 54 and 56.
  • the upper section 54 comprises a generally triangular member having the hypotenuse thereof extending on a line between the edges 58 and 60 which define the corners in the passage 30.
  • the base of the upper section 54 is in a horizontal position; and, therefore, the passages in the section 54 are at an acute angle with respect to the side walls which define the passage 30.
  • the lower section 56 comprises a plurality of passages which are aligned in a parallel relationship with respect to the side walls. It will be appreciated that .streams of air passing through the section 54 will be preferentially directed toward the inner passages in the section 56. With this arrangement, a lower speed is achieved in those portions of the air issuing from the outer passages and, accordingly, a decrease in turbulence with respect to the ambient air can be realized.
  • two sections 62 and 64 are also provided for forming the nozzle of the outer stream.
  • the passages in the honeycomb sections are all arranged in a parallel relationship; however, slower movement in the outer portions of the outer stream is achieved because of the curvilinear character of the section 62. The more pronounced curvature which characterizes this section at the inner portions thereof causes this section to pick up greater amounts of air in these inner portions. A slower movement then results with respect to outer portions of the stream and, again, a reduction in turbulence can be achieved.
  • the outer stream must pass through a nozzle 66 which is substantially larger than the nozzle 46.
  • the longer passages in the nozzle i66 result in a greater drag on the air passing therethrough.
  • the speed of the outer stream will tend to be slower than the speed of the adjacent inner stream.
  • the angular disposition of the top edge 68 of the nozzle 66 provides for longer nozzle passages for carrying the outer portions of the stream 40 while the inner passages of the nozzle become progressively smaller.
  • the outer portions of the air stream 40 are, therefore, subjected to a greater drag and, accordingly, these outer portions will have a lesser tendency to create turbulence.
  • louver means 70 which is situated in the passage 30 in advance of nozzle 72.
  • each of the elements 74 which define the louver means is directed at an angle whereby air in the passage will be forced inwardly with respect to the cabinet enclosure.
  • Each of these elements 74 extends the entire length of the cabinet whereby the channels defined between the elements will also extend across the cabinet. It is contemplated that reenforcing means can be provided at one or more intermediate points between the adjacent elements to provide a substantially rigid structure.
  • the louvered arrangement illustrated acts to direct air in the passage 30 toward the inner side of the honeycomb. This has the effect of reducing the rate of movement of the air in the outer portion which is exposed to the ambient air.
  • the arrangement shown in FIGURE 6 comprises a combination of screen elements 76 and means 78 which denes openings 80 for passage of air to nozzle 82. As in the previous cases, the arrangement for effecting the characteristics ofthe air is provided in the passage 30.
  • FIGURE 7 A plan view of the means 78 shown in FIGURE 6 is illustrated in FIGURE 7. As shown therein, a plurality of slats 84 are provided in spaced apart relationship whereby the openings 80 will be defined therebetween. It will be noted that the openings become progressively larger as they occur from the outer portion of the means 78 to the inner portion thereof. This arrangement also has the effect of directing a major portion of the air at the inner side of the passage 30 while lesser portions thereof pass in the portion of the outer stream adjacent the ambient air.
  • FIGURE 8 illustrates a proposed modification 78' wherein progressively larger openings 80' approximately correspond in function to the openings 80. It will be apparent that this arrangement will affect the air stream in substantially the same manner as described above.
  • the screen 76 which may be conventional window screen, has been found to be a desirable addition since it has the effect of breaking up the air so that it will not pass through the outlet nozzles in the form of jets. This results in a smoother gradient of air speed across a given panel as will be discussed with reference to FIGURE 2.
  • FIGURE 2 illustrates diagrammatically the results which can be achieved with the nozzle constructions of this invention.
  • the horizontal axis corresponds to the width of the nozzles employed in the construction.
  • the X designations on the diagram are employed to plot the speed of the stream across lits width. It will be noted that a relatively slow air velocity is achieved in the outer 'portions of the stream while a relatively high air velocity is achieved in the inner portions.
  • the circles plotted along with the X on the diagram illustrate the findings with the upper section 54 removed. As noted, the outer portions of the stream actually move at a higher rate than the inner portions. The greater possibility of turbulence with this arrangement will be obvious.
  • the right-hand section of the diagram illustrates the affect of the nozzles 46 on the speed of the refrigerated streams. As noted, the lowest speed is achieved in the innermost portions of the stream and, therefore, a decrease in turbulence in this region can be accomplished.
  • outer nozzles are concerned, it will be understood that these nozzles are to be employed in any position where. the streams passing therethrough will contact other air having a substantially lower rate of movement; or in the case of ambient air, having substantially no movement.
  • the nozzle yconstructions may be utilized in cabinets of the type described by Beckwith et al., 4in application Serial No. 247,245, filed December 26, 1962, and entitled Refrigerated Cabinet With Circulating' Air Panels. In this construction, an outer stream which was not powered by any mechanical circulating means was included.
  • the nozzles of this invention could be employed for the intermediate passages in such a construction.
  • 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 plural-ity of air nozzles, said inlets and nozzles extending in side-by-side relationship across opposite edges of said access opening, passages defined by said cabinet cornmunicating each of the corresponding inlets and nozzles, refrigeration means disposed in the innermost one of said passages to refrigerate ⁇ at least the innermost stream, and circulating fans located in said innermost passage and in an immediately adjacent outer passage, the improvement wherein said nozzles comprise honeycomb sections, the honeycomb section for said outer stream including an outer portion adapted to progressively reduce the speed of the outer portion of the air stream-passing therethrough whereby the extreme outer portion of the stream crossing said access opening sets up a minimum of turbulence when contacting the ambient air, said ⁇ honeycomb section for said outer stream including two spaced-apart upper and lower portions, the passages through the
  • a refrigerated cabinet of the type which defines an yaccess opening in one wall communicating an other- Wise enclosed space with the ambient atmosphere, and which is provided with a plural-ity of air inlets and a p lurality of air nozzles, said inlets and nozzles extending in side-by-side relationship across lopposite edges of said access opening, passages deiined by said cabinet communicating each of the conresponding inlets and nozzles, refrigeration means disposed in the innermost one of said passages to refrigerate at least the innermost stream, and circulating fans located in said innermost passage and in Van immediately adjacent outer passage, the iinprovement wherein said nozzles comprise honeycomb sections, the honeycomb section for said outer stream including an outer portion adapted to progressively reduce the speed of the outer portion of the air stream passing therethrough whereby the extreme -outerportion of the stream crossing said access opening sets up a minimum of turbulence when contacting the ambient air, said honeycomb section for said outer stream including two spaceda
  • a cabinet in accordance with claim 3 wherein the upper surface of said upper section is curvilinear to the extent that a greater exposure to said outer streamis presented by the inner passages of said upper section where- by the speed of the inner portions of said outer stream exceeds the Ispeed of the outer portions thereof.
  • a refrigerated cabinet of the type which defines an Iaccess opening in one wall communicating an otherwise enclosed space with the ambient atmosphere, and which is vprovided 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 defined by said cabinet communicating ea-ch of the corresponding inlets and nozzles, refrigeration means disposed in the innermost one of said passages to refrigerate at least the innermost stream, and circulating vfans located in said innermost passage and in an immediately adjacent outer passage, the improvement wherein said nozzles comprise honeycomb sections, the honeycomb section for said outer stream including an outer portion adapted to progressively reduce the speed of the outer portion of the air stream passing therethrough whereby the extreme outer portion of the stream crossing said laccess opening sets up a minimum of turbulence when contacting the ambient air, said honeycomb section for said adjacent outer stream dening substantially longer passages than the honeycomb section for the innenmost stream whereby
  • a refrigerated cabinet of the type which denes an access opening in one wall communicating an otherwise enclosed space with the ambientl atmosphere, said cabinet being 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, refrigeration means disposed in at least the innermost one -of said passages to refrigerate at least the innermost stream passing through said passages and across said access opening, and circulating means included in said innermost passage and in an adjacent outer passage for moving the streams of air?
  • the improvement comprising means for controlling the velocity of the air streams as they issue'from said nozzles, said last mentioned means cornprising elements positioned in said passages for contact with the stre-ams passing therethrough and operating to provide a maximum Velocity at the interface between the streams moving across said access opening with progressively decre-asing velocity toward the outer edges of said streams.
  • a cabinet in accordance with claim -8 wherein the means for controlling the velocity of the air streams comprise louvers extending across the passage coniining the outermost stream, said louvers being located adjacent to and upstream of the nozzle for said outermost stream, and air channels deiined by said louvers directed down wardly and inwardly toward said last mentioned nozzle whereby faster moving portions of the outermost air stream are provided in the innermost sections thereof.
  • a cabinet in accordance with claim -8 wherein the means for controlling the velocity of said air streams comprise elements extending across the passage confining the Ioutermost air stream, said elements being located adjacent to and upstream of thel nozzle for said outermost passage, said elements dening openings extending across said passage with said openings being progressively larger ⁇ toward the inner portions of said passage whereby a greater speed is produced in the innermost portions of the air stream in the outermost passage.

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  • 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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
US329047A 1963-12-09 1963-12-09 Nozzle construction for refrigerated cabinets Expired - Lifetime US3256799A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BE656891D BE656891A (de) 1963-12-09
US329047A US3256799A (en) 1963-12-09 1963-12-09 Nozzle construction for refrigerated cabinets
GB42731/64A GB1082235A (en) 1963-12-09 1964-10-20 Nozzle construction for air curtains in refrigerated cabinets
CH1493464A CH431578A (de) 1963-12-09 1964-11-19 Kühleinrichtung, insbesondere Kühltruhe
NL6413832A NL6413832A (de) 1963-12-09 1964-11-27
DE6607439U DE6607439U (de) 1963-12-09 1964-12-04 Kuehlmoebel
DE19641451078 DE1451078A1 (de) 1963-12-09 1964-12-04 Kuehlraum
DK604064AA DK118959B (da) 1963-12-09 1964-12-09 Åbent køleskab.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US329047A US3256799A (en) 1963-12-09 1963-12-09 Nozzle construction for refrigerated cabinets

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US3256799A true US3256799A (en) 1966-06-21

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US329047A Expired - Lifetime US3256799A (en) 1963-12-09 1963-12-09 Nozzle construction for refrigerated cabinets

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US (1) US3256799A (de)
BE (1) BE656891A (de)
CH (1) CH431578A (de)
DE (2) DE6607439U (de)
DK (1) DK118959B (de)
GB (1) GB1082235A (de)
NL (1) NL6413832A (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935803A (en) * 1972-10-12 1976-02-03 Flanders Filters, Inc. Air filtration apparatus
US4199957A (en) * 1978-06-20 1980-04-29 Harker Co., Ltd. Evaporator assembly
US4302948A (en) * 1979-09-06 1981-12-01 Tyler Refrigeration Corporation Refrigerated display case having a unitary outlet grid
FR2515319A1 (fr) * 1981-10-26 1983-04-29 Air Ind Paroi repartitrice d'air de ventilation pour enceintes de travail
FR2686685A1 (fr) * 1992-01-24 1993-07-30 Dassault Electronique Appareil de traitement climatique avec rideau de fluide antigivre.
US5282367A (en) * 1992-04-24 1994-02-01 The Delfield Company Refrigerated food preparation table and method
FR2764052A1 (fr) * 1997-06-03 1998-12-04 Louis Bernet Dispositif diffuseur d'air sec en mur laminaire pour meubles frigorifiques et vitrines de vente
US20060199496A1 (en) * 2005-02-16 2006-09-07 Hussmann Corporation Air louver for a refrigerated display case
US20070021047A1 (en) * 2005-07-19 2007-01-25 Institute Of Occupational Safety And Health, Council Of Labor Affairs Air-isolator fume hood
US20070251253A1 (en) * 2004-09-30 2007-11-01 Carrier Corporation Curtain Air Admission Assembly
US20080282719A1 (en) * 2005-12-07 2008-11-20 Fung Kwok K Airflow Stabilizer for Lower Front of a Rear Loaded Refrigerated Display Case
US20090084125A1 (en) * 2007-09-28 2009-04-02 Carrier Corporation Refrigerated merchandiser system
US20090205351A1 (en) * 2006-10-26 2009-08-20 Kwok Kwong Fung Secondary airflow distribution for a display case
US20090215381A1 (en) * 2005-04-25 2009-08-27 Delaware Capital Formation ,Inc. Air curtain system for a refrigerated case
US20100058789A1 (en) * 2008-09-11 2010-03-11 Hill Phoenix, Inc Air distribution system for temperature-controlled case
US20100212343A1 (en) * 2006-06-20 2010-08-26 Hill Phoenix, Inc. Refrigerated case with low frost operation
US20100313588A1 (en) * 2009-06-10 2010-12-16 Hill Phoenix, Inc Air distribution system for temperature-controlled case
DE102012018155A1 (de) * 2012-09-14 2014-03-20 Aichinger Gmbh Umluftkühltheke und Verfahren zum Betrieb einer Umluftkühltheke
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021776A (en) * 1958-02-19 1962-02-20 Barber Colman Co Method and apparatus for ventilating laboratory fume hoods
US3163024A (en) * 1962-12-26 1964-12-29 Dual Jet Refrigeration Company Refrigerated cabinet structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021776A (en) * 1958-02-19 1962-02-20 Barber Colman Co Method and apparatus for ventilating laboratory fume hoods
US3163024A (en) * 1962-12-26 1964-12-29 Dual Jet Refrigeration Company Refrigerated cabinet structure

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935803A (en) * 1972-10-12 1976-02-03 Flanders Filters, Inc. Air filtration apparatus
US4199957A (en) * 1978-06-20 1980-04-29 Harker Co., Ltd. Evaporator assembly
US4302948A (en) * 1979-09-06 1981-12-01 Tyler Refrigeration Corporation Refrigerated display case having a unitary outlet grid
FR2515319A1 (fr) * 1981-10-26 1983-04-29 Air Ind Paroi repartitrice d'air de ventilation pour enceintes de travail
FR2686685A1 (fr) * 1992-01-24 1993-07-30 Dassault Electronique Appareil de traitement climatique avec rideau de fluide antigivre.
US5282367A (en) * 1992-04-24 1994-02-01 The Delfield Company Refrigerated food preparation table and method
FR2764052A1 (fr) * 1997-06-03 1998-12-04 Louis Bernet Dispositif diffuseur d'air sec en mur laminaire pour meubles frigorifiques et vitrines de vente
US20070251253A1 (en) * 2004-09-30 2007-11-01 Carrier Corporation Curtain Air Admission Assembly
US7681409B2 (en) * 2004-09-30 2010-03-23 Hill Phoenix, Inc. Curtain air admission assembly
US20060199496A1 (en) * 2005-02-16 2006-09-07 Hussmann Corporation Air louver for a refrigerated display case
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
US8647183B2 (en) 2005-04-25 2014-02-11 Hill Phoenix, Inc. Air curtain system for a refrigerated case
US20090215381A1 (en) * 2005-04-25 2009-08-27 Delaware Capital Formation ,Inc. Air curtain system for a refrigerated case
US7318771B2 (en) * 2005-07-19 2008-01-15 Institute Of Occupational Safety And Health, Council Of Labor Affairs Air-isolator fume hood
US20070021047A1 (en) * 2005-07-19 2007-01-25 Institute Of Occupational Safety And Health, Council Of Labor Affairs Air-isolator fume hood
US20080282719A1 (en) * 2005-12-07 2008-11-20 Fung Kwok K Airflow Stabilizer for Lower Front of a Rear Loaded Refrigerated Display Case
US20100212343A1 (en) * 2006-06-20 2010-08-26 Hill Phoenix, Inc. Refrigerated case with low frost operation
US20090205351A1 (en) * 2006-10-26 2009-08-20 Kwok Kwong Fung Secondary airflow distribution for a display case
US20090084125A1 (en) * 2007-09-28 2009-04-02 Carrier Corporation Refrigerated merchandiser system
US20100058789A1 (en) * 2008-09-11 2010-03-11 Hill Phoenix, Inc Air distribution system for temperature-controlled case
US9526354B2 (en) 2008-09-11 2016-12-27 Hill Phoenix, Inc. Air distribution system for temperature-controlled case
US20100313588A1 (en) * 2009-06-10 2010-12-16 Hill Phoenix, Inc Air distribution system for temperature-controlled case
US8863541B2 (en) 2009-06-10 2014-10-21 Hill Phoenix, Inc. Air distribution system for temperature-controlled case
DE102012018155A1 (de) * 2012-09-14 2014-03-20 Aichinger Gmbh Umluftkühltheke und Verfahren zum Betrieb einer Umluftkühltheke
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
US10646054B2 (en) * 2016-03-31 2020-05-12 Panasonic Intellectual Property Management Co., Ltd. Showcase and operation method thereof

Also Published As

Publication number Publication date
GB1082235A (en) 1967-09-06
NL6413832A (de) 1965-06-10
DE6607439U (de) 1971-03-11
BE656891A (de)
DE1451078A1 (de) 1970-10-01
DK118959B (da) 1970-10-26
CH431578A (de) 1967-03-15

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