US20130192799A1 - Refrigerator Having a Disbursed Cooling Air Stream Directed Upwardly From a Pressurized Plenum - Google Patents
Refrigerator Having a Disbursed Cooling Air Stream Directed Upwardly From a Pressurized Plenum Download PDFInfo
- Publication number
- US20130192799A1 US20130192799A1 US13/363,744 US201213363744A US2013192799A1 US 20130192799 A1 US20130192799 A1 US 20130192799A1 US 201213363744 A US201213363744 A US 201213363744A US 2013192799 A1 US2013192799 A1 US 2013192799A1
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- United States
- Prior art keywords
- refrigerator
- openings
- duct
- air
- duct portion
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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- 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
- F25D2317/066—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 air supply
- F25D2317/0661—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 air supply from the bottom
Definitions
- FIG. 1 is a perspective view of a refrigerator 100 .
- the refrigerator 100 is comprised of a cabinet defined by a top 102 , a bottom 104 not visible in FIG. 1 , a left side 106 , a right side 108 not visible in FIG. 1 and a front door 110 .
Abstract
In a refrigerator, warm air is collected or drawn into a warm air return duct opening located at or near the top of the refrigerated space instead of the bottom. The warm air is passed through an evaporator where it cools. The cooled air is driven into a pressurized plenum located at the bottom of the refrigerated space. The plenum is defined by a screen extending across the bottom of the refrigerated space. Air in the plenum passes through holes in the screen and driven upward. The air flow inside the refrigerator is thus upwardly, i.e., from the bottom to the top.
Description
- Prior art refrigerators typically introduce cold air at the top of a cabinet through a cold-air supply duct. They also typically draw in or “intake” warm air at the bottom of the cabinet through a “return” air duct. Locating a cold air supply duct at the top of a refrigerator cabinet takes advantage of the fact that cold air, being denser that warm air, falls downwardly, however, in some instances, locating the cold air supply duct at the top of a refrigerated cabinet can provide a less than optimum air flow distribution. The temperature inside the refrigerator at different elevations and different horizontal locations can be uneven if the refrigerated air introduced at the top of a cabinet is able to find an unobstructed path to the warm air return.
-
FIG. 1 is perspective view of a refrigerator; -
FIG. 2 is a side view of a refrigerator, including the ones depicted inFIG. 1 andFIG. 2 , and depicting an upwardly-directed cold air flow; -
FIG. 3 is a perspective view of a refrigerator showing an inclined screen, which defines a converging duct, and which is perforated; -
FIG. 4 is a front view of the refrigerator depicted inFIG. 3 ; -
FIG. 5A is a side view of the refrigerator depicted inFIGS. 4 and 5 ; -
FIG. 5B depicts an air profile; -
FIG. 6 is an isolated view of a portion of the inclined screen portion and depicting how the thickness of the screen can affect air flow through the screen; -
FIG. 7 is a perspective view of a refrigerator and having an alternate embodiment of an inclined screen that defines a converging duct portion and that provides a different air flow profile than the screen shown inFIGS. 3-6 ; -
FIG. 8 is a front view of the refrigerator depicted inFIG. 7 ; and -
FIG. 9 is side view of the refrigerator depicted inFIGS. 8 and 9 . -
FIG. 1 is a perspective view of arefrigerator 100. Therefrigerator 100 is comprised of a cabinet defined by atop 102, abottom 104 not visible inFIG. 1 , aleft side 106, aright side 108 not visible inFIG. 1 and afront door 110. -
FIG. 2 is a cross-sectional view of therefrigerator 100 shown inFIGS. 1 and 2 . - The
refrigerator 100 has an interior space orvolume 200 defined by theleft side 106 and the right side 108 (shown inFIG. 1 andFIG. 2 ), arear side 112, thetop 102, thebottom 104, and thedoor 110. Warm air is depicted inFIG. 2 byarrows 202, which are drawn pointing upwardly and into a warm air return duct opening 204. Thereturn duct opening 204 forms the end of anelongated air duct 206 having a firsthorizontal portion 208 defined in part by thetop 102 of the refrigerator and apanel 210 suspended from thetop 102. Theelongated duct 206 has asecond portion 212, which is vertical and located against or as part of therear side 112. The first portion of theduct 208 and the second portion of theduct 212 are coupled to each other by a curvingsection 214, which also forms part of theelongated duct 206. In a preferred embodiment, theelongated duct 206 and its component portions are formed from a plastic panel having a width, which inFIG. 2 extends into the plane of the figure, equal to the interior width of therefrigerator 100. - Still referring to
FIG. 2 ,warm air 202 drawn into thereturn duct opening 204 is also drawn throughconventional evaporator coil 216, which absorbs heat and thus cools the air that flows through theevaporator 216. Movement of the air into the return duct opening 204 and the evaporator is responsive to aconventional fan 218 located “downstream” of theevaporator 216 in thefirst duct portion 208. - Air drawn through the
evaporator 216 by thefan 218 is also forced by thefan 218 through the curving connectingportion 214 and into the second,vertical portion 212. The refrigerated air, identified byreference numeral 220, is forced downwardly toward thebottom 104 of therefrigerator 100. When the refrigeratedair 220 reaches thebottom 104 of thesecond portion 212 of theduct 206, the air is forced into a convergingduct portion 230 defined by an inclined and perforatedscreen 232. As described more fully below, air that is below the perforatedscreen 232 is at a pressure that is elevated, i.e., higher than, the pressure of the air above thescreen 232. - The perforated
inclined screen 232, which is also referred to interchangeably hereinafter as thescreen 232, theinclined screen 232 and the perforatedscreen 232, has a downwardly-directed bend orinflection point 234 located near thedoor 110 whereat the perforated screen is directed to thebottom 104 of therefrigerator 100. Thebend 234 extends across the width of thescreen 232, which extends into the plane ofFIG. 2 . The bend meets thebottom 104 of therefrigerator 100 at a termination edge identified byreference numeral 236. - The
inclined screen 232 has arear edge 238 abutting and attached to thefront panel 240 of thesecond portion 212 of theduct 206. Therear edge 238 also extends across the width of thescreen 232. Since thefront panel 240 of thesecond portion 212 of theduct 206 is effectively the rear or back side of the refrigerated air space, thefront panel 240 is considered to be a rear side of the refrigerator to which theincline screen 232 is attached at itsrear edge 238. - The
inclined screen 232 is perforated withnumerous holes 242.Air 220 that is forced down thesecond duct portion 212 enters the space below thescreen 232. Since air continues to flow through thescreen 232, thescreen 232 is considered to act as a duct. Since thescreen 232 is inclined at aninclination angle 250 as shown, and which is measure relative to thebottom 104 of therefrigerator 100, thescreen 232 defines aconverging air duct 244. -
Cold air 220 exits thesecond portion 212 of theduct 206 at a relatively tall opening 213 having aheight 246. The height 245 of theopening 254 is defined by the elevation of therear edge 238 above thebottom 104 of therefrigerator 100. Thescreen 232, being inclined at anangle 250 relative to thebottom 104 converges or gets closer to thebottom 104 as the screen length extends toward thefront 110 of therefrigerator 100. The inclination point orfront edge 234 of thescreen 232 is thus much closer to thebottom 104 than is therear edge 238 of the screen. The convergingduct portion 244 is thus considered to have anopening 254, into whichcold air 220 from thesecond portion 212 of theduct 206 flows, responsive to thefan 218. InFIG. 2 , the opening 254 portion of theconverging duct portion 244 created by thescreen 232 can be seen to be located or “open” just below therear edge 238 of theinclined screen 232. -
FIG. 3 is a perspective view of therefrigerator 100. The height of the refrigerator as shown inFIG. 3 appears to be less than the height of the refrigerator as depicted inFIG. 2 . - The
inclined screen 232 can be seen to extend all across theinterior 200 of the refrigerator to meet and make contact with both theleft side 106 and theright side 108. Thefront 110 can be seen to be adoor 110, which is attached to thetop 102 and thebottom 104 byhinges 300 that are attached at theright side 108 of the refrigerator. Ahandle 302 enables thedoor 110 to be opened and closed. Aglass panel 304 in thedoor 110 allows the interior of the refrigerator to be viewed without opening the door. - As
FIG. 3 is drawn, a first duct portion 308 is drawn with awarm air inlet 306 located near thefront door 110 and that extends across thewidth 310. Thewarm inlet 306 is also depicted as being “open” or “facing” thedoor 110 whereas thewarm air inlet 204 shown inFIG. 2 faces downwardly. Theevaporator 216 andfan 218 shown inFIG. 2 are omitted fromFIG. 3 for clarity. - The
inclined screen 232 has atop surface 312 and abottom surface 314. Theholes 242 extend through the top andbottom surfaces holes 242 by virtue of the fact that the air pressure inside theconverging duct portion 244, below thescreen 232 and its lower orbottom surface 314, is greater than or “elevated” relative to the pressure in theinterior portion 200 of therefrigerator 100, i.e., above thetop surface 312. Stated another way, a fan that draws air into thewarm air inlet 306 and pressurizes the portion of theduct 206 that is downstream from the fan, also pressurizes theconverging duct portion 244. The convergingduct portion 244 and theinclined screen 232 thus define a pressurized air plenum. If the pressure drop across thescreen 232, i.e., the pressure below thescreen 232 minus the pressure above the screen, is substantially uniform across the area of thescreen 232, the volumetric flow rate of air through each of theopenings 242 through thescreen 232 will also be substantially uniform. On the other hand, if the air pressure drop across the screen is not uniform, air flow through some of theholes 242 will be greater than or less than air flow through others holes 242. The pressure drop across the screen is kept relatively uniform across thelower surface 314 of thescreen 232 by selecting one or more of: the fan's air flow rate; dimensions of theduct 206, including its various portions; the area of thescreen 232; theinclination angle 250 of thescreen 232; the number ofholes 242; the open area of theholes 242 and the thickness of the material from which thescreen 232 is made, -
FIG. 4 is a front elevation view of therefrigerator 100. As with the depiction inFIG. 3 , thescreen 232 can be seen to extend all the way between theleft side 106 and theright side 108 of thecabinet interior 200. Theholes 242 can be seen to be uniformly distributed across thescreen 232.Holes 242 can also be seen though the portion of the screen below thefront edge 234. These holes are directed towards thedoor 110. -
FIG. 5A is a left-side view of therefrigerator 100 but with anevaporator 516 shown as being located downstream from afan 518, which draws warm air into a vertically orientedwarm air inlet 504.FIG. 5A is thus an alternate embodiment. Refrigerated orcold air 220 is shown passing through the evaporator 616 into thepressurized plenum 254 which is defined by the convergingduct portion 244 which is in turn defined by theinclined screen section 232. Therefrigerated air 220 is depicted as passing through thescreen 232 and upwardly through theinterior 200. The rate at whichrefrigerated air 220 passes through each of theopenings 242 is considered herein to be a volumetric flow rate. If the pressure across thebottom surface 314 of thescreen 232 is uniform, and if the area of eachopening 242 is the same or substantially the same, the volumetric flow rate through each of theopenings 242 will also be substantially the same. - As used herein, a completely uniform flow rate or nearly uniform flow rate through the
holes 242 in thescreen 232, is considered herein to be a uniform air flow profile. InFIG. 5B , a uniform air flow profile is depicted usingvectors 502, which extend upwardly fromopenings 242 in the x-z plane, the heights of which are uniform. -
FIG. 6 is an isolated view of a portion of thescreen 232 proximate to thefront edge 234. InFIG. 7 , thescreen 232 can be seen to have athickness 600. Theholes 242 can be seen as themselves being ducts having lengths equal to thethickness 600 of the material from which thescreen 232 is fabricated. Those of ordinary skill in the art will recognize that as thethickness 600 increases, head loss will increase accordingly, although not significantly relative to the losses associated with the sudden contraction then expansion of the flow path. Thediameter 602 or the open area of thehole 242 and thethickness 600 of thescreen 232 thus affect the volumetric flow rate of air through the screen and its holes. - Referring again to
FIG. 5 , the convergingduct portion 244 itself acts as a duct to thecold air 220 forced into it by the fan. Keeping the volumetric flow rate uniform across the area of the screen is thus a function of the angle of inclination, flow rate of air into theduct portion 244 and the open area of each of the holes, including their number and spacing. -
FIG. 7 is a perspective view of an alternate embodiment of a refrigerator 700 having aninclined screen 702.FIG. 8 is a front elevation view of the alternate embodiment. - The
screen 702 has awidth 704 less than thewidth 706 of theinterior 708. Therear edge 710 meets or abuts with therear surface 712 of arear duct 714. Thewidth 704 being less than thewidth 706 providesopen spaces 716 beyond theleft edge 718 and theright edge 720 of thescreen 702. Theopen spaces 716 are considered herein to be themselves openings within aperimeter region 722 that is located beyond theextreme edges screen 702. Theperimeter 722 is located beyond theedges edges left side 730 and theright side 732 means that air is able to freely flow upward through those openings providing an increased air flow there through. -
FIG. 9 is a cross-sectional view of yet another embodiment of therefrigerator 900 but inFIG. 9 , thescreen 902, which is also inclined at anangle 904, does not extend back tofront side 906 of a rearward-locatedduct 908. Anopening 910 is instead located near the top or rear edge 1012, which allows refrigeratedair 914 to flow readily into theinterior volume 916 of therefrigerator cabinet 900. - Those of ordinary skill in the art will recognize that while the openings in the screens depicted and described above are substantially uniform, as well as being evenly spaced, alternate embodiments include the use of holes through a screen that are neither equal nor evenly distributed. Stated another way, in a preferred embodiment the thickness of the screen, its area, its extent between the left and right sides, the number of openings, the inclination angle of the screen are selected or configured to provide a uniform distribution of air flow through the screen across its area or substantially across the area. In one alternate embodiment, at least one of the thickness, the area and number of openings and the inclination angle are configured to provide a non-uniform air flow distribution. In one such alternate embodiment, at least one of the thickness, area and number of openings and the inclination angle are each configured to provide an increased air flow through at least some of the openings that are near at least one of the left edge of the screen, the right edge of the screen or the front edge in order to provide an increased air flow through such openings. The increased air flow through such openings is relative to an average air flow through at least a central region of the inclined screen portion.
- In yet another alternate embodiment, at least one of the thickness, area, number of openings, inclination angle and the dimensions of the screen inclined portion between the front edge and the rear edge are selected to provide an increased air flow through openings in a region considered to be a perimeter that is around the exterior edges of the screen.
- Those of ordinary skill in the art will recognize that the portion of the screen that is beyond the front edge (identified by “234” in the embodiment shown in
FIG. 2 ) and which is directed downwardly to the bottom (“104” in the embodiment shown inFIG. 2 ) is at a different elevation angle relative to the bottom than is the screen portion (“232” in the embodiment shown inFIG. 2 ) between the front edge (“234” in the embodiment shown inFIG. 2 ) and the rear edge (“238” in the embodiment shown inFIG. 2 ). Those inclination angles are selected to imbue that front portion of the screen, i.e. the portion between thefront edge 234 and the bottom 104 with the ability to increase air flow towards thedoor 110. - For purposes of clarity, it is important to note that the converging duct portion is considered to have an inlet. The inlet is considered to be at least a geometric plane extending downwardly from the rear edge (“238” in the embodiment shown in
FIG. 2 ) to the bottom (“104” in the embodiment shown inFIG. 2 ) of the refrigerator and between the left side and the right side (“104” and “108” respectively in the embodiment shown inFIG. 2 ). The opening or inlet of that converging duct portion is thus coupled to the outlet of the second portion (“212” in the embodiment shown inFIG. 2 ) of the aforementioned elongated duct (“206”). The outlet of the second duct portion is preferably of the same shape and dimensions as the inlet to the converging duct portion. - In a preferred embodiment, which is shown in
FIGS. 2 and 3 , theinclined screen 232 is attached to supports that are themselves attached to theleft side 104 and theright side 106. The duct between the converging duct portion and thewarm air inlet 204 is preferably a unitary structure, however, in alternate embodiments they can be separate sections joined to each other by appropriate and well known prior art methods of connecting air ducts to each other. - The foregoing description is for purposes of illustration. The true scope of the invention is set forth in the following claims.
Claims (20)
1. A refrigerator having an interior defined by first and second sides, a rear side, a front opening having a door, a top and a bottom, the refrigerator comprising:
a first inclined screen portion located proximate to the bottom and between the first and second sides of the interior and between the rear side of the interior and the front opening, the first inclined screen portion having a front edge proximate the front opening and a rear edge proximate the rear side, the inclined screen portion having a first inclination angle, relative to horizontal defining a converging first duct portion, the first duct portion having a first height at the rear edge and a smaller second height at the front edge, the first duct portion having an opening at the rear edge;
wherein the inclination angle and openings in the screen establish an air flow profile in the refrigerator cabinet.
2. The refrigerator of claim 1 , wherein the first inclined screen portion extends to first and second sides and extends to the rear side.
3. The refrigerator of claim 1 , wherein the screen is comprised of:
a panel having a top surface and a bottom surface, a first thickness between the top and bottom surfaces, and a number of first openings, the number of openings having a first area and extending through the top and bottom surfaces;
wherein, the number of first openings, the first thickness, the first area, and the first inclination angle being selected and configured to provide a distribution of air flow through the first inclined screen portion responsive to an input air stream at the duct opening.
4. The refrigerator of claim 3 , wherein the first openings are substantially uniformly spaced apart from each other.
5. The refrigerator of claim 3 , wherein the first openings are substantially uniformly sized.
6. The refrigerator of claim 3 , wherein the first openings are non-uniformly spaced apart from each other.
7. The refrigerator of claim 3 , wherein the first openings are non-uniformly sized.
8. The refrigerator of claim 1 , wherein the first thickness, first area and number of first openings and the first inclination angle are configured to provide a distribution of air flow through the first inclined screen portion that is substantially uniform across the area of the first inclined screen portion.
9. The refrigerator of claim 1 , wherein the first thickness, first area and number of first openings and the first inclination angle are configured to provide a non-uniform distribution of air flow through the first inclined screen portion.
10. The refrigerator of claim 1 , wherein the first thickness, first area and number of first openings and the first inclination angle are configured to provide an increased air flow through at least some of the openings proximate the front edge, to provide an increased air flow toward the door. relative to the air flow through a region of the first inclined screen portion.
11. The refrigerator of claim 1 , wherein the first thickness, first area and number of first openings and the first inclination angle and dimensions of the first inclined screen portion within a perimeter region are configured to provide an increased air flow through at least some of the openings that are within the perimeter region.
12. The refrigerator claim 1 , wherein the first inclined screen section is coupled to a second inclined section having a second inclination angle greater than the first inclination angle and extending downwardly from the front edge toward the bottom, the second inclined section being comprised of a second thickness and second openings having a second area.
13. The refrigerator of claim 12 , wherein the first and second thicknesses are substantially the same and wherein the first and second areas are substantially the same.
14. The refrigerator of claim 12 , wherein the first and second thicknesses, the first and second areas and the first and second inclination angles are configured to provide an increased air flow through at least some of the first and second openings proximate the front edge, to provide an increased air flow toward the door. relative to the air flow through a region of the first inclined section.
15. The refrigerator of claim 1 , wherein the first duct portion has an inlet with a first cross sectional area and is coupled to a second duct portion having an outlet coupled to the inlet of the first duct portion and having an inlet, the second duct portion being configured to provide an air stream at the outlet of the second duct portion that flows into the inlet of the first duct portion, the air stream provided to the inlet of the first duct portion having a substantially uniform air flow distribution over the cross sectional area of the inlet of the first duct portion.
16. The refrigerator of claim 13 , wherein the air stream has a direction through the first and second duct portions and wherein the direction and the cross sectional area are substantially orthogonal.
17. The refrigerator of claim 14 , wherein the second duct portion has a converging section located between the outlet and the inlet of the second duct portion, the inlet of the second portion being coupled to a fan, the converging section being configured to evenly distribute an air flow from the fan, substantially uniformly across the cross sectional area of the outlet of the second duct portion.
18. The refrigerator of claim 13 , wherein the first duct portion and the second duct portion are comprised of separate duct sections, joined to each other at the inlet of the first duct portion and the outlet of the second duct portion.
19. The refrigerator of claim 13 , wherein the inlet of the second duct portion is located proximate to the top of the refrigerator cabinet, whereby refrigerated air flows upwardly from the first inclined screen portion into the inlet of the second duct portion.
20. A method of circulating air in a refrigerator cabinet having first and second sides, a rear side, a front opening having a door, a top and a bottom, the method comprising the steps of:
forcing air into a plenum located proximate to the bottom of the refrigerated cabinet, the plenum defined by a bottom, upwardly extending sides, an air input port coupled to an air duct and an inclined panel extending between the upwardly extending sides and facing upwardly toward the top of the refrigerator cabinet, the inclined panel having a thickness and perforated with a plurality of openings distributed across the inclined top panel, each opening defining an open area in the inclined panel through which air from below the inclined panel can pass and flow upwardly in the refrigerator cabinet, the thickness of the top panel, the number, open area and spacing of the openings and a flow rate of air driven into the plenum creating a positive pressure below the inclined panel that is greater than the pressure outside the plenum such that air in the plenum below the inclined panel flows upwardly through the plurality of openings and upwardly through the refrigerator cabinet;
collecting upwardly flowing air in the refrigerator cabinet at an inlet of a duct located near the top of the refrigerator cabinet; and
routing air collected at the duct inlet through the duct to an evaporator and from the evaporator back into the plenum.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/363,744 US20130192799A1 (en) | 2012-02-01 | 2012-02-01 | Refrigerator Having a Disbursed Cooling Air Stream Directed Upwardly From a Pressurized Plenum |
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Application Number | Priority Date | Filing Date | Title |
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US13/363,744 US20130192799A1 (en) | 2012-02-01 | 2012-02-01 | Refrigerator Having a Disbursed Cooling Air Stream Directed Upwardly From a Pressurized Plenum |
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US20130192799A1 true US20130192799A1 (en) | 2013-08-01 |
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US13/363,744 Abandoned US20130192799A1 (en) | 2012-02-01 | 2012-02-01 | Refrigerator Having a Disbursed Cooling Air Stream Directed Upwardly From a Pressurized Plenum |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4145893A (en) * | 1977-06-29 | 1979-03-27 | Kysor Industrial Corporation | Diversion defrost display cabinet |
US4750335A (en) * | 1987-06-03 | 1988-06-14 | Hill Refrigeration Corporation | Anti-condensation means for glass front display cases |
US5872721A (en) * | 1990-04-11 | 1999-02-16 | Transfresh Corporation | Monitor-control systems and methods for monitoring and controlling atmospheres in containers for respiring perishables |
US20030031777A1 (en) * | 2001-01-11 | 2003-02-13 | Luciano Lucatello | Method and apparatus for storing tobacco-based products and packed beverages at the same time |
US6615908B1 (en) * | 1994-02-17 | 2003-09-09 | Transphere Systems Limited | Method of transporting or storing perishable produce |
US20100205992A1 (en) * | 2003-04-07 | 2010-08-19 | Dna Holdings Pty Ltd | Refrigerated cabinet |
US20100313588A1 (en) * | 2009-06-10 | 2010-12-16 | Hill Phoenix, Inc | Air distribution system for temperature-controlled case |
US8056349B2 (en) * | 2007-08-13 | 2011-11-15 | B/E Aerospace, Inc. | Method and apparatus for maintaining a uniform temperature in a refrigeration system |
-
2012
- 2012-02-01 US US13/363,744 patent/US20130192799A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4145893A (en) * | 1977-06-29 | 1979-03-27 | Kysor Industrial Corporation | Diversion defrost display cabinet |
US4750335A (en) * | 1987-06-03 | 1988-06-14 | Hill Refrigeration Corporation | Anti-condensation means for glass front display cases |
US5872721A (en) * | 1990-04-11 | 1999-02-16 | Transfresh Corporation | Monitor-control systems and methods for monitoring and controlling atmospheres in containers for respiring perishables |
US6615908B1 (en) * | 1994-02-17 | 2003-09-09 | Transphere Systems Limited | Method of transporting or storing perishable produce |
US20030031777A1 (en) * | 2001-01-11 | 2003-02-13 | Luciano Lucatello | Method and apparatus for storing tobacco-based products and packed beverages at the same time |
US20100205992A1 (en) * | 2003-04-07 | 2010-08-19 | Dna Holdings Pty Ltd | Refrigerated cabinet |
US8056349B2 (en) * | 2007-08-13 | 2011-11-15 | B/E Aerospace, Inc. | Method and apparatus for maintaining a uniform temperature in a refrigeration system |
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 |
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