WO2015138553A1 - Tube pattern for a refrigerator evaporator - Google Patents
Tube pattern for a refrigerator evaporator Download PDFInfo
- Publication number
- WO2015138553A1 WO2015138553A1 PCT/US2015/019870 US2015019870W WO2015138553A1 WO 2015138553 A1 WO2015138553 A1 WO 2015138553A1 US 2015019870 W US2015019870 W US 2015019870W WO 2015138553 A1 WO2015138553 A1 WO 2015138553A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- evaporator
- tubes
- tube
- depth
- tube pattern
- Prior art date
Links
- 238000005452 bending Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 description 14
- 239000003507 refrigerant Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/0071—Evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
Definitions
- the present disclosure relates to a tube pattern for a refrigerator evaporator, and also relates to a refrigerator evaporator equipped with the tube pattern.
- the present disclosure primarily utilizes two types of measurement criteria to evaluate the improvement thereof.
- One criteria is the U-A value per pound of aluminum (where U is an overall heat transfer coefficient and A is an area), embodied in a heat transfer amount obtained per material usage.
- the other criteria is U-A value per volume, representing a heat transfer amount that can be obtained from a given space.
- the present disclosure aims to determine the tube outer diameter and tube pattern, thereby maximuming the U-A/lb of aluminum and the U-A per volume, while minimizing the influence to the compressor and optimizing the entire energy efficiency.
- a tube pattern for a refrigerator evaporator is characterized in that tubes of the tube pattern are staggered in airflow, and an outer diameter of the tubes ranges from 6.5mm to 7.5mm.
- the outer diameter of tube may be 7.00mm (hereinafter the tube with an outer diameter of Xmm is referred to as an Xmm tube).
- a wall thickness of the tubes may range from 0.3mm to 0.7mm, as required by a burst pressure. A greater wall thickness may also be used to reduce internal volume and refrigerant charge.
- a bending radius at a bending center of the tubes may range from 18.0mm to 22.0mm.
- the evaporator is arranged with 1 column of tubes at every evaporator depth of 25mm. Then an evaporator with an evaporator depth of 75mm is arranged with 3 columns of tubes; and an evaporator with an evaporator depth of 50mm is arranged with 2 columns of tubes. [0014] According to yet another aspect of the present disclosure, the evaporator is arranged with 1 column of tubes at every evaporator depth of 20mm. Then an evaporator with an evaporator depth of 60mm is arranged with 3 columns of tubes.
- Tubes in the tube pattern are arranged in an inclined orientation with respect to the evaporator depth.
- a refrigerator evaporator including the above-mentioned tube pattern for a refrigerator evaporator may be provided.
- the present disclosure realizes a determination of the tube outer diameter and the tube pattern, thereby maximizing U-A/lb of aluminum and U-A per volume, while minimizing the influence to the compressor performance and optimizing the entire energy efficiency. It also reduces the amount of refrigerant charge required, which can further improve performance by reducing cyclic losses and offers benefits when flammable refrigerants are utilized.
- Fig.1 shows an evaporator with a depth of 75mm and 3 columns of tubes
- Fig.2 shows an evaporator with a depth of 50mm and two columns of tubes
- Fig.3 shows an evaporator with a depth of 60mm and three columns of tubes
- Fig. 4 shows an evaporator with a depth of 100 mm and four columns of tubes
- Fig. 5 through Fig. 7 show the evaluation of influence to the heat transfer performance caused by the tube outer diameter, representing three types of tubes with different outer diameters which are 6.35mm, 8.00mm and 9.50mm, respectively;
- Fig. 8 and Fig. 9 show the comparison between a 7.00mm tube and a 8.00mm tube arranged on an evaporator with a depth of 50mm and 2 columns of tubes;
- Fig. 10 and Fig. 1 1 show the comparison between an evaporator with a depth of 50mm and 2 columns of 8mm tubes and an evaporator with a depth of 60mm and 3 columns of 7mm tubes.
- Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.
- Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
- first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
- Spatially relative terms such as “inner,” “outer,” “beneath,” “below,” “lower,” “above,” “upper,” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the example term “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
- the present disclosure provides a tube pattern for a refrigerator evaporator or a freezer evaporator. That is, the evaporator may be used on stand-alone refrigerators, refrigerators that also include a freezer, and standalone freezers.
- tubes 1 are staggered in air flow, thereby providing optimal heat transfer.
- the outer diameter of the tubes 1 ranges from 6.5mm to 7.5mm, and the wall thickness of the tubes 1 is decreased and ranges from 0.3mm to 0.7mm as required by a burst pressure, so that the material cost can be reduced or to further reduce internal volume and reduce the required refrigerant charge.
- a bending radius at a bending center of the tubes ranges from 18.0mm to 22.0mm, so that the tubes can be bent at the bending center as tightly as possible with high bending quantity.
- an evaporator is arranged with one column of tubes at every depth 2 of 25mm; that is, the evaporator with a depth of 75mm as shown in Fig. 1 is arranged with three columns of tubes; and the evaporator with a depth of 50mm as shown in Fig. 2 is arranged with two columns of tubes.
- the evaporator is arranged with one column of tubes at every depth of 20mm. Then the evaporator with a depth of 60mm is arranged with three columns of tubes. According to yet another aspect of the present disclosure, as shown in Fig. 4, the evaporator is arranged with one column of tubes at every depth of 25 mm. Then the evaporator with a depth of 100 mm is arranged with four columns of tubes.
- tubes in the tube pattern are arranged in an inclined orientation with respect to the evaporator depth.
- the angle of inclination may range between 25 degrees and 60 degrees relative an edge of the evaporator. In the illustrated embodiments, the angle of inclination is about 45 degrees.
- a first criteria is U-A/lb of aluminum, embodied in a heat transfer amount obtained per material usage.
- a second criteria is U-A per volume, representing a heat transfer amount that can be obtained from a given space.
- Fig. 5 through Fig. 7 show three types of tubes with different outer diameters which are 6.35mm, 8.00mm and 9.50mm, respectively; wherein the X-axis in Fig. 5 through Fig. 7 represents CFM (Cubic Feet per Minute); the Y-axis in Fig. 5 represents U-A/lb; the Y-axis in Fig. 6 represents U-A per volume; and the Y-axis in Fig. 7 represents air side pressure drop.
- CFM Cirbic Feet per Minute
- the Y-axis in Fig. 5 represents U-A/lb
- the Y-axis in Fig. 6 represents U-A per volume
- the Y-axis in Fig. 7 represents air side pressure drop.
- the evaporator arranged with a 6.35mm tube is similar to the evaporator arranged with 8.00mm tube in the heat transfer performance.
- evaporators provided with 6.35mm tubes can increase the energy consumption by 4%, on average.
- a 7.00mm tube can provide beneficial advantages of a decreased tube diameter without any negative influence to the compressor performance, and can maintain the energy efficiency and dramatically reduce the material consumption.
- Fig. 8 and Fig. 9 show a comparison between a 7.00mm tube and an 8.00mm tube arranged on an evaporator with a depth of 50mm and two columns of tubes. It can be seen that, compared with an 8.00mm tube, the 7.00mm tube improves the U-A/lb by 14% and improves the U-A per volume by 12%.
- Fig. 10 and Fig. 1 1 show a comparison between an evaporator with a depth of 60mm and two columns of 8mm tubes, and an evaporator with a depth of 60mm and three columns of 7mm tubes.
- the 7mm tube is designed to have a U-A/lb (the heat transfer amount obtained per material usage) higher than that of an 8mm tube by 33%, and have a U-A per volume (the heat transfer amount that can be obtained from a given space) higher than that of the 8mm tube by 31 %.
- U-A/lb the heat transfer amount obtained per material usage
- U-A per volume the heat transfer amount that can be obtained from a given space
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112016014400A BR112016014400A2 (en) | 2014-03-11 | 2015-03-11 | TUBE PATTERN FOR A REFRIGERATOR EVAPORATOR |
MX2016010921A MX2016010921A (en) | 2014-03-11 | 2015-03-11 | Tube pattern for a refrigerator evaporator. |
EP15761103.9A EP3117162A4 (en) | 2014-03-11 | 2015-03-11 | Tube pattern for a refrigerator evaporator |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201461950916P | 2014-03-11 | 2014-03-11 | |
US61/950,916 | 2014-03-11 | ||
US14/643,065 US20150323230A1 (en) | 2014-03-11 | 2015-03-10 | Tube pattern for a refrigerator evaporator |
US14/643,065 | 2015-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015138553A1 true WO2015138553A1 (en) | 2015-09-17 |
Family
ID=54072355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2015/019870 WO2015138553A1 (en) | 2014-03-11 | 2015-03-11 | Tube pattern for a refrigerator evaporator |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150323230A1 (en) |
EP (1) | EP3117162A4 (en) |
BR (1) | BR112016014400A2 (en) |
MX (1) | MX2016010921A (en) |
WO (1) | WO2015138553A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020112426A1 (en) * | 2018-11-29 | 2020-06-04 | Brazeway, Inc. | Tube pattern for a refrigerator evaporator |
CN110425903B (en) * | 2019-08-13 | 2021-03-23 | 江苏天舒电器有限公司 | Fin type heat exchanger and intelligent temperature adjusting method thereof |
WO2021077649A1 (en) * | 2019-10-23 | 2021-04-29 | 广东美的暖通设备有限公司 | Heat exchanger fin, heat exchanger, indoor unit and air conditioner |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090199585A1 (en) * | 2006-03-23 | 2009-08-13 | Matsushita Electric Industrial Co., Ltd. | Fin-tube heat exchanger, fin for heat exchanger, and heat pump apparatus |
EP2322892A1 (en) * | 2008-08-07 | 2011-05-18 | Sanden Corporation | Heat exchanger and heat pump device using same |
US20110113820A1 (en) * | 2008-08-08 | 2011-05-19 | Sangmu Lee | Heat transfer tube for heat exchanger, heat exchanger, refrigerating cycle apparatus, and air conditioner |
EP2498039A1 (en) * | 2009-11-04 | 2012-09-12 | Daikin Industries, Ltd. | Heat exchanger and indoor unit including the same |
US20120285190A1 (en) * | 2010-01-13 | 2012-11-15 | Mitsubishi Electirc Corporation | Heat transfer pipe for heat exchanger, heat exchanger, refrigeration cycle apparatus, and air-conditioning apparatus |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US4446915A (en) * | 1982-04-14 | 1984-05-08 | The Trane Company | Heat exchanger tube circuits |
US5540276A (en) * | 1995-01-12 | 1996-07-30 | Brazeway, Inc. | Finned tube heat exchanger and method of manufacture |
JP2003279282A (en) * | 2002-03-20 | 2003-10-02 | Toshiba Kyaria Kk | Heat exchanger |
JP4124136B2 (en) * | 2003-04-21 | 2008-07-23 | 株式会社デンソー | Refrigerant evaporator |
US7073574B2 (en) * | 2004-02-23 | 2006-07-11 | Brazeway, Inc. | Method and apparatus for forming fins for a heat exchanger |
WO2006085943A2 (en) * | 2004-06-30 | 2006-08-17 | Argo-Tech Corporation | Improved heat exchanger performance |
JP2006234264A (en) * | 2005-02-24 | 2006-09-07 | Mitsubishi Electric Corp | Fin and tube-type heat exchanger |
US20070221365A1 (en) * | 2006-03-24 | 2007-09-27 | Evapco, Inc. | U-shaped heat exchanger tube with a concavity formed into its return bend |
KR20090022840A (en) * | 2007-08-31 | 2009-03-04 | 엘지전자 주식회사 | Heat exchanger |
CN101846465B (en) * | 2010-04-13 | 2011-11-09 | 三花丹佛斯(杭州)微通道换热器有限公司 | Heat exchanger |
AU2011260953A1 (en) * | 2010-05-31 | 2012-12-20 | Sanden Corporation | Heat exchanger and a heat pump using same |
-
2015
- 2015-03-10 US US14/643,065 patent/US20150323230A1/en not_active Abandoned
- 2015-03-11 MX MX2016010921A patent/MX2016010921A/en unknown
- 2015-03-11 BR BR112016014400A patent/BR112016014400A2/en not_active Application Discontinuation
- 2015-03-11 WO PCT/US2015/019870 patent/WO2015138553A1/en active Application Filing
- 2015-03-11 EP EP15761103.9A patent/EP3117162A4/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090199585A1 (en) * | 2006-03-23 | 2009-08-13 | Matsushita Electric Industrial Co., Ltd. | Fin-tube heat exchanger, fin for heat exchanger, and heat pump apparatus |
EP2322892A1 (en) * | 2008-08-07 | 2011-05-18 | Sanden Corporation | Heat exchanger and heat pump device using same |
US20110113820A1 (en) * | 2008-08-08 | 2011-05-19 | Sangmu Lee | Heat transfer tube for heat exchanger, heat exchanger, refrigerating cycle apparatus, and air conditioner |
EP2498039A1 (en) * | 2009-11-04 | 2012-09-12 | Daikin Industries, Ltd. | Heat exchanger and indoor unit including the same |
US20120285190A1 (en) * | 2010-01-13 | 2012-11-15 | Mitsubishi Electirc Corporation | Heat transfer pipe for heat exchanger, heat exchanger, refrigeration cycle apparatus, and air-conditioning apparatus |
Non-Patent Citations (1)
Title |
---|
See also references of EP3117162A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP3117162A1 (en) | 2017-01-18 |
BR112016014400A2 (en) | 2017-08-08 |
EP3117162A4 (en) | 2017-11-29 |
US20150323230A1 (en) | 2015-11-12 |
MX2016010921A (en) | 2017-04-27 |
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