US20160356532A1 - Evaporator having folded baffles - Google Patents

Evaporator having folded baffles Download PDF

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Publication number
US20160356532A1
US20160356532A1 US14/730,478 US201514730478A US2016356532A1 US 20160356532 A1 US20160356532 A1 US 20160356532A1 US 201514730478 A US201514730478 A US 201514730478A US 2016356532 A1 US2016356532 A1 US 2016356532A1
Authority
US
United States
Prior art keywords
evaporator
baffle
tank
opposed
refrigerant
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
Application number
US14/730,478
Other languages
English (en)
Inventor
Lim Wijaya
Nickolaos Economou
Marius Daniel Luca
Shen Jie
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.)
Air International Inc
Original Assignee
Air International Inc
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
Application filed by Air International Inc filed Critical Air International Inc
Priority to US14/730,478 priority Critical patent/US20160356532A1/en
Assigned to AIR INTERNATIONAL INC. reassignment AIR INTERNATIONAL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ECONOMOU, NICKOLAOS, JIE, Shen, LUCA, Marius Daniel, WIJAYA, HALIM
Priority to CN201680032465.2A priority patent/CN108027224A/zh
Priority to EP16804205.9A priority patent/EP3303970A4/en
Priority to PCT/US2016/034965 priority patent/WO2016196437A1/en
Publication of US20160356532A1 publication Critical patent/US20160356532A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F28D1/053—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 straight
    • F28D1/0535—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 straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • 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
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—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
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes

Definitions

  • the disclosed inventive concept relates to vehicle air conditioning systems and particularly to the evaporator of such systems. More particularly, the disclosed inventive concept relates to a baffle for an evaporator tank wherein the baffle is a cladded and folded plate having elevated areas, the baffle being brazed or otherwise attached to the evaporator tank.
  • Liquid refrigerant leaves the condenser under high pressure and enters the drier or accumulator.
  • the drier catches any liquid water that may inadvertently have entered the system.
  • the liquid refrigerant once cleared of any water, flows to the expansion valve which functions to remove pressure from the liquid refrigerant and literally allows it to expand. This reduction of pressure allows the liquid refrigerant to return to the vapor stage in the evaporator, the refrigerant's next stop.
  • the evaporator is also similar in shape and function to a small radiator. Typically the evaporator is fitted inside of the vehicle's passenger compartment in or around the instrument panel.
  • the still-liquid refrigerant enters the evaporator under low pressure from the expansion valve.
  • the liquid refrigerant vaporizes while absorbing heat from inside the car.
  • Cold air is circulated within the passenger compartment by a fan that pushes air across the fins of the evaporator.
  • Low pressure refrigerant now in gaseous form, exits the evaporator and returns to the compressor where the cycle is repeated.
  • Evaporators are typically manufactured from aluminum and usually include an upper tank, a lower tank and a series of refrigerant-containing tubes fitted there between.
  • Baffles are located within the tanks to regulate the flow of liquid refrigerant.
  • the baffles are usually brazed to the inner wall of the tank.
  • known technology makes positioning the baffles during the brazing process challenging and frequently results in the baffles being out of alignment prior to the brazing process.
  • the disclosed inventive concept overcomes the problems associated with known evaporators by providing an arrangement in which the baffles are fixed in position prior to brazing to provide an accurate and fluid-tight seal without error and with minimum production time.
  • the disclosed inventive concept provides an evaporator that includes an evaporator core, an evaporator tank attached to the evaporator core, and at least one single-piece and folded baffle having raised surfaces incorporated into the evaporator tank.
  • FIG. 1 is an isometric view of a evaporator according to the disclosed inventive concept
  • FIG. 2 is an exploded view of the upper portion of the evaporator of FIG. 1 showing the upper tank in spaced apart relation to the cooling fins and the end plate assemblies and baffles also spaced apart from the upper tank portions;
  • FIG. 5 is an end view of the baffle of FIG. 4 ;
  • FIG. 6 is a perspective view of a baffle according to a second embodiment of the disclosed inventive concept.
  • FIG. 7 is an end view of the baffle of FIG. 6 ;
  • FIG. 8 is a perspective view of a baffle according to a third embodiment of the disclosed inventive concept.
  • FIG. 9 is an end view of the baffle of FIG. 8 ;
  • FIG. 10 is a perspective view of a portion of upper tank portions shown in cutaway and illustrating baffles according to the disclosed inventive concept
  • FIG. 11 is a view taken along line 11 of FIG. 10 ;
  • FIG. 12 is a top plan view of a portion of upper tank portions shown in cutaway and illustrating baffles according to the disclosed inventive concept
  • FIG. 13 is a view taken along line 13 of FIG. 12 ;
  • FIG. 14 is an end view of a single-layer baffle according to an alternative embodiment of the disclosed inventive concept.
  • FIGS. 1 through 13 The evaporator for use with an air conditioning system for a vehicle according to the disclosed inventive concept is illustrated in its various embodiments in FIGS. 1 through 13 . However, it is to be understood that the illustrated embodiments are suggestive and are not intended as being limiting.
  • the evaporator of the disclosed inventive concept is illustrated in FIG. 1 while the baffles and end plates are illustrated in FIG. 2 .
  • the evaporator of the disclosed inventive concept is a multi-pass evaporator having a thickness range of between about 25 mm and 80 mm.
  • Various embodiments of the baffles are shown in FIGS. 3 through 9 .
  • FIGS. 10 through 13 illustrate the baffles in place in the tank portions. Regardless of the embodiment, the evaporator of the disclosed inventive concept overcomes challenges and limitations associated with the construction of current evaporators.
  • an evaporator generally illustrated as 10 .
  • the overall configuration of the evaporator 10 as illustrated is intended as being suggestive and not limiting.
  • the evaporator 10 includes an upper tank assembly 12 and a lower tank assembly 14 .
  • the upper tank assembly 12 and the lower tank assembly 14 are typically made of a metal, although other materials including polymerized materials may be used alone or in combination.
  • a lower pressure, liquid refrigerant input 16 is provided as is a lower pressure, gas refrigerant output 18 .
  • the liquid refrigerant input 16 is connected to liquid input upper tank portion 20 .
  • the gas refrigerant output 18 is connected to a gas output upper tank portion 24 .
  • a series of refrigerant-containing tubes 26 fluidly connect the upper tank assembly 12 and the lower tank assembly 14 .
  • FIG. 2 an exploded view of the upper portion of the evaporator 10 is illustrated in spaced apart relation to the refrigerant-containing tubes 26 , a pair of baffles 27 , and a pair of end plate assemblies 28 .
  • One of the end plate assemblies 28 is shown separated into its two portions, an inner end plate 30 having an inlet refrigerant input passageway 31 and an outlet refrigerant output passageway 32 , and an outer end plate 33 having an inlet refrigerant input port 34 (connected to the liquid refrigerant input 16 ) and an outlet refrigerant output port 36 (connected to the gas refrigerant output 18 ).
  • the illustrated shapes of the baffles 27 , the inner end plate 30 and the outer end plate 33 may be altered from the illustrated shapes without varying the scope of the present invention.
  • FIGS. 3 through 9 illustrate various embodiments of the baffle of the disclosed inventive concept.
  • a single type of baffle may be used in a single tank or different embodiments of the baffle may be used.
  • FIG. 3 a perspective view of the baffle 27 is illustrated.
  • the baffle 27 is preferably stamped from a single piece of cladded sheet aluminum and is then folded as illustrated to form the two-layer baffle of the disclosed inventive concept.
  • the baffle 27 includes a first baffle half-portion 38 and a second baffle half-portion 40 .
  • the folding of the baffle 27 provides spring back that helps to retain the baffle 27 inside the evaporator tank. This feature results in a robust brazing process to prevent any internal refrigerant leaks.
  • the baffle 27 In addition to folding as a method of retaining the baffle 27 in its pre-brazed position within the tank, the baffle 27 is also provided with raised areas that contact the inner wall of the tank. In this way, the baffle 27 is held in place during the brazing process.
  • this arrangement according to a first embodiment of the disclosed inventive concept is also illustrated in FIGS. 4 and 5 .
  • a pair of opposed upper ramped raised areas 42 and 42 ′ are provided to contact the inside top wall of the tank while a pair of opposed lower ramped raised areas 44 and 44 ′ are provided to contact the inside side wall of the tank.
  • the ramped raised areas 42 , 42 ′, 44 and 44 ′ retain the baffle 27 in its proper aligned position to allow correct brazing of the baffle 27 in place within the tank.
  • FIGS. 6 and 7 illustrate raised areas according to an alternate embodiment of the disclosed inventive concept.
  • a baffle 50 is showing having a first baffle half-portion 52 and a second baffle half-portion 54 .
  • a pair of opposed, upper semi-circular raised areas 56 and 56 ′ and a pair of opposed, lower semi-circular raised areas 58 and 58 ′ are formed on the baffle 50 .
  • the semi-circular raised areas 56 , 56 ′, 58 and 58 ′ retain the baffle 50 in its proper aligned position to allow correct brazing of the baffle 50 in place within the tank.
  • FIGS. 8 and 9 illustrate raised areas according to a third embodiment of the disclosed inventive concept.
  • a baffle 60 is showing having a first baffle half-portion 62 and a second baffle half-portion 64 .
  • a pair of opposed, upper dimpled raised areas 66 and 66 ′ and a pair of opposed, lower dimpled raised areas 68 and 68 ′ are formed on the baffle 60 .
  • the dimpled raised areas 66 , 66 ′, 68 and 68 ′ retain the baffle 60 in its proper aligned position to allow correct brazing of the baffle 60 in place within the tank.
  • FIGS. 10 through 13 illustrate adjacent baffles 27 in position relative to the upper tank in various views. Particularly, is a perspective view of a portion of an evaporator 10 shown in cutaway and illustrating side-by-side baffles 27 while FIG. 11 is a view taken along line 11 of FIG. 10 .
  • the ramped raised areas 42 and 42 ′ are illustrated as being in contact with an inner wall 70 of the gas output upper tank portion 24 .
  • the other raised areas (not shown) are also in similar contact.
  • FIG. 12 is a top plan view of a portion of an evaporator 10 shown in cutaway and illustrating more particularly the side-by-side relationship of the baffles 27 according to the disclosed inventive concept.
  • FIG. 13 is a more detailed view of the side-by-side arrangement of the baffles 27 taken along line 13 of FIG. 12 .
  • FIG. 14 illustrates an alternative approach to a baffle according to the disclosed inventive concept.
  • a flat plate baffle 42 is formed from a non-folded, single layer of material.
  • the flat plate baffle 42 includes a first outer side 44 and a second outer side 46 .
  • Formed on the first outer side 44 is a pair of raised areas 48 and 48 ′ and formed on the second outer side 46 is a pair of raised areas 50 and 50 ′.
  • the flat plate baffle 42 is formed from a single layer, the positions of the raised areas 48 and 48 ′ are offset with respect to the positions of the raised areas 50 and 50 ′ due to manufacturing constraints. It is to be understood that while the raised areas 48 , 48 ′, 50 and 50 ′ are dimples, other configurations such as the ramps and semi-circles discussed above could be incorporated as well.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Air Humidification (AREA)
US14/730,478 2015-06-04 2015-06-04 Evaporator having folded baffles Abandoned US20160356532A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US14/730,478 US20160356532A1 (en) 2015-06-04 2015-06-04 Evaporator having folded baffles
CN201680032465.2A CN108027224A (zh) 2015-06-04 2016-05-31 具有折叠挡板的蒸发器
EP16804205.9A EP3303970A4 (en) 2015-06-04 2016-05-31 Evaporator having folded baffles
PCT/US2016/034965 WO2016196437A1 (en) 2015-06-04 2016-05-31 Evaporator having folded baffles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14/730,478 US20160356532A1 (en) 2015-06-04 2015-06-04 Evaporator having folded baffles

Publications (1)

Publication Number Publication Date
US20160356532A1 true US20160356532A1 (en) 2016-12-08

Family

ID=57441807

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/730,478 Abandoned US20160356532A1 (en) 2015-06-04 2015-06-04 Evaporator having folded baffles

Country Status (4)

Country Link
US (1) US20160356532A1 (zh)
EP (1) EP3303970A4 (zh)
CN (1) CN108027224A (zh)
WO (1) WO2016196437A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018220143A1 (de) * 2018-11-23 2020-05-28 Mahle International Gmbh Sammelrohr für einen Wärmeübertrager
US11143464B2 (en) 2018-11-23 2021-10-12 Mahle International Gmbh Collector tube for a heat exchanger
US11148574B2 (en) * 2017-02-02 2021-10-19 Lg Electronics Inc. Refrigerator for vehicle and vehicle
US11365937B2 (en) * 2018-11-23 2022-06-21 Mahle International Gmbh Collector tube for a heat exchanger
US20220316804A1 (en) * 2019-02-04 2022-10-06 Mitsubishi Electric Corporation Heat exchanger and air-conditioning apparatus including the same
US11493285B2 (en) * 2017-09-15 2022-11-08 Alfa Laval Corporate Ab Baffle support and baffle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190204028A1 (en) * 2017-12-29 2019-07-04 Air International (Us) Inc. Evaporator Having Crimped End Plates

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5123483A (en) * 1990-10-08 1992-06-23 Showa Aluminum Kabushiki Kaisha Heat exchanger
US6289980B1 (en) * 1999-12-16 2001-09-18 Norsk Hydro, A.S. Baffle for heat exchanger manifold
US6651334B2 (en) * 2001-06-26 2003-11-25 Calsonic Kansei Corporation Tank of heat exchanger and method of producing same
US7156165B2 (en) * 2002-11-15 2007-01-02 Zexel Valeo Climate Control Corporation Tank for heat exchanger

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Publication number Priority date Publication date Assignee Title
US6883600B2 (en) * 2002-05-16 2005-04-26 Denso Corporation Heat exchanger with dual heat-exchanging portions
US20050211425A1 (en) * 2004-03-26 2005-09-29 Valeo, Inc. Heat exchanger having an improved baffle
KR20130026631A (ko) * 2011-09-06 2013-03-14 한라공조주식회사 열교환기
CN104422331B (zh) * 2013-08-23 2016-08-10 珠海格力电器股份有限公司 微通道换热器及其隔板

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5123483A (en) * 1990-10-08 1992-06-23 Showa Aluminum Kabushiki Kaisha Heat exchanger
US6289980B1 (en) * 1999-12-16 2001-09-18 Norsk Hydro, A.S. Baffle for heat exchanger manifold
US6651334B2 (en) * 2001-06-26 2003-11-25 Calsonic Kansei Corporation Tank of heat exchanger and method of producing same
US7156165B2 (en) * 2002-11-15 2007-01-02 Zexel Valeo Climate Control Corporation Tank for heat exchanger

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11148574B2 (en) * 2017-02-02 2021-10-19 Lg Electronics Inc. Refrigerator for vehicle and vehicle
US11493285B2 (en) * 2017-09-15 2022-11-08 Alfa Laval Corporate Ab Baffle support and baffle
DE102018220143A1 (de) * 2018-11-23 2020-05-28 Mahle International Gmbh Sammelrohr für einen Wärmeübertrager
US11143464B2 (en) 2018-11-23 2021-10-12 Mahle International Gmbh Collector tube for a heat exchanger
US11365937B2 (en) * 2018-11-23 2022-06-21 Mahle International Gmbh Collector tube for a heat exchanger
US11662160B2 (en) 2018-11-23 2023-05-30 Mahle International Gmbh Collector tube for a heat exchanger
US20220316804A1 (en) * 2019-02-04 2022-10-06 Mitsubishi Electric Corporation Heat exchanger and air-conditioning apparatus including the same
US12044480B2 (en) * 2019-02-04 2024-07-23 Mitsubishi Electric Corporation Heat exchanger and air-conditioning apparatus including the same

Also Published As

Publication number Publication date
WO2016196437A1 (en) 2016-12-08
EP3303970A1 (en) 2018-04-11
CN108027224A (zh) 2018-05-11
EP3303970A4 (en) 2019-01-02
CN108027224A8 (zh) 2018-09-07

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AS Assignment

Owner name: AIR INTERNATIONAL INC., MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WIJAYA, HALIM;ECONOMOU, NICKOLAOS;LUCA, MARIUS DANIEL;AND OTHERS;REEL/FRAME:038230/0045

Effective date: 20160330

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION