EP3029407A1 - Gerilltes prallblech für einen wärmetauscher - Google Patents

Gerilltes prallblech für einen wärmetauscher Download PDF

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Publication number
EP3029407A1
EP3029407A1 EP14382490.2A EP14382490A EP3029407A1 EP 3029407 A1 EP3029407 A1 EP 3029407A1 EP 14382490 A EP14382490 A EP 14382490A EP 3029407 A1 EP3029407 A1 EP 3029407A1
Authority
EP
European Patent Office
Prior art keywords
baffle
tubes
regions
passage
heat exchanger
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.)
Withdrawn
Application number
EP14382490.2A
Other languages
English (en)
French (fr)
Inventor
Adrián Folgueira Baltar
José Antonio GRANDE FERNÁNDEZ
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.)
BorgWarner Emissions Systems Spain SL
Original Assignee
BorgWarner Emissions Systems Spain SL
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 BorgWarner Emissions Systems Spain SL filed Critical BorgWarner Emissions Systems Spain SL
Priority to EP14382490.2A priority Critical patent/EP3029407A1/de
Publication of EP3029407A1 publication Critical patent/EP3029407A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1607—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/226—Transversal partitions

Definitions

  • the present invention relates to a grooved baffle for heat exchangers, primarily heat exchangers intended for cooling hot gas, for example, gas recirculated in an internal combustion engine or EGR (Exhaust Gas Recirculation) gas, by means of a coolant.
  • EGR exhaust Gas Recirculation
  • the baffle according to the invention allows modifying coolant flow direction by preventing or significantly limiting the occurrence of recirculation areas or stagnation points in the coolant flow.
  • Heat exchangers comprise bundles of tubes housed in a shell. Heat exchangers intended for cooling hot gas, for example, gas recirculated in an internal combustion engine or EGR gas, by means of a coolant are of special interest. In these heat exchangers the coolant circulates between the shell and the bundle of tubes and allows reducing the temperature of a second fluid, i.e., the hot gas, circulating through the inside of the tubes forming said bundle of tubes.
  • a second fluid i.e., the hot gas
  • the coolant circulates through the inside of the shell from a specific inlet to a specific outlet, where the inlet and outlet position determines the path to be followed by the coolant.
  • it is common to cause changes in direction in the trajectory of said coolant so that it tends to hit the tubes perpendicularly, for example, causing zigzag trajectories within the shell.
  • Changes in coolant flow direction are achieved by interposing baffles along the path of said coolant, distributed along the inside of the shell of the heat exchanger, closing the passage in part of the section of the shell such that they allow passage through certain windows arranged in alternating locations.
  • baffles are panels or deflectors which are integrally assembled inside the shell of the heat exchanger and allow directing the coolant flow circulating around the tubes of the bundle of tubes.
  • the coolant flow is redirected by the baffles acting as obstacles in the trajectory of the coolant flow along its path through the inside of the shell of the heat exchanger, forcing the flow to follow the trajectory through places that are free of obstacles.
  • the plate-shaped baffles used in the state of the art in heat exchangers are positioned with an orientation essentially transverse to the bundle of tubes and cover only a partial area of the cross-section of the space left between the shell and the bundle of tubes.
  • the baffle therefore occupies part of the space through which the coolant would flow if there was no baffle, leaving only part of the section of said trajectory free.
  • the free areas of the trajectory of the coolant flow allowing the baffles to be located in an alternating manner along the length of the heat exchanger, such that in the segment comprised between two baffles the flow is forced to perform a change in direction causing zigzag trajectories, or such that they have at least changes in direction having speed components transverse to the bundle of tubes. Additionally, the cross-section of the flow is reduced with the baffles, so fluid speed as well as pressure drop increase.
  • Baffles have a second structural function since they serve as a support for said tubes of the bundle of tubes of the exchanger. Said baffles maintain the position of the tubes supporting both the weight of these tubes and the strains caused by external excitations such as vibrations or accelerations.
  • baffles formed by plates with perforations for the passage of a certain number of tubes but not all of them, since they have a smaller area due to the existence of free areas and correspond to a section that does not cover all the tubes of the bundle of tubes.
  • the tubes going through the perforations are held by the baffle, but the tubes left free by the baffle must be supported by other baffles.
  • the baffles arranged adjacent thereto are usually those that at least hold the tubes it left free and possibly a few more. Requirements for supporting the bundle of tubes require using a plurality of baffles, alternating the tubes that are left free and tubes that are held to assure that there are means for all the tubes intended for withstanding the strains imposed by the actual weight and vibrations.
  • baffles With respect to vibrations, not only do baffles absorb forces imposed by inertia effects caused by said vibrations, but they also define vibration nodes in the tubes. These nodes establish distances that are less than the total length of the tube, so they increase the fundamental frequency thereof. It is therefore possible to reduce vibration amplitudes of the tubes by suitably selecting the distances. Since some tubes are not supported by the baffle, enough baffles must be included so that the vibration modes do not give rise to deformations in said vibration modes with excessive amplitudes in each tube.
  • a first inventive aspect provides a baffle formed by a main plate in which there are one or more openings for the passage of heat exchanger tubes wherein at least one of said openings, according to the projection on the plane defined by the main plate, comprises:
  • the openings of the baffle allow simultaneous passage of tubes of the bundle of tubes and the coolant, preventing the fluid from having to surround the baffle.
  • this allows a more homogeneous increase in speed in the field of coolant speeds, given that passage of the entire flow is concentrated in the existing openings surrounding the tubes of the bundle of tubes.
  • the increase in speed occurs in said openings, generating jets that expand suddenly, clearing possible stagnation zones.
  • the baffle does not occupy the entire cross-section of the heat exchanger, but the grooving on said baffle does occupy the entire bundle of tubes. According to this configuration, in addition to preventing recirculation zones, it is possible to modify the average trajectory of the cooling flow without said flow concentrating entirely through the openings, there also being coolant flow through the windows other than said openings. This configuration reduces head losses in the coolant.
  • the first regions of one and the same opening are distributed according to a regular pattern along a specific directrix axis X-X'.
  • the regular pattern distributes the first regions on both sides of a specific directrix axis X-X' and the second region extends along said directrix axis X-X'.
  • the tubes of the bundle of tubes are thus distributed on both sides of directrix axis X-X', a space through which the coolant can circulate being arranged between said tubes such that all the tubes of the bundle of tubes supported by the first regions are surrounded by the coolant.
  • die cutting this baffle allows using a single punch for this single shared opening housing a set of tubes.
  • the distribution of the first regions on both sides of directrix axis X-X' is in an alternating manner.
  • this distribution allows the tubes of the bundle of tubes housed in the first regions to be effectively supported by said first regions and the tubes to be distributed in a compact manner.
  • the second region is larger according to this arrangement of the first regions, so the coolant flow is distributed more homogeneously around the tubes of the bundle of tubes and gives rise to less head loss.
  • the regular pattern is an alignment of the first regions and comprises a plurality of second regions, each second region connecting two consecutively arranged first regions.
  • connection of first regions based on a plurality of second regions allows the tubes to be held more strongly, allowing them to be aligned with one another.
  • the at least one opening allows the presence of second regions between rows of adjacent tubes, such that stagnation zones are prevented and all the tubes of the bundle of tubes are in contact with the baffle maintaining good structural support.
  • the first regions of one and the same opening are distributed according to a regular pattern and said regular pattern is a set of circularly distributed first regions and the second region arranged at the center of the set of first regions and in contact with all of them.
  • contact of the second region with all the first regions allows better coolant flow around the tubes of the bundle of tubes, whereas circular distribution of the first regions provides better seating for supporting the tubes, in addition to allowing positioning the second region at the center of said first regions.
  • the edge of the opening is a free edge. Said free edge is in contact with the tubes going through the baffle, such that it can be welded to said tubes. The free edge is obtained after die cutting the opening on the main plate of the baffle.
  • the edge of the opening comprises a flange or neck.
  • Said flange is distributed on the contour of the opening, such that it demarcates either the first regions or the first regions and second regions.
  • the flange or neck is preferably obtained by stamping on the main plate of the baffle.
  • stamping allows obtaining a neck in the form of a protuberance projecting from said main plate.
  • a second inventive aspect provides a heat exchanger comprising one or more baffles according to the first inventive aspect.
  • said heat exchanger comprises a bundle of tubes for the passage of a fluid to be cooled housed inside a shell adapted for the passage of a coolant, where said shell comprises one or more baffles according to the first inventive aspect for holding a plurality of tubes of the bundle of tubes.
  • the heat exchanger comprises a single baffle
  • an option is for said baffle to be located at the mid-point of the length of the tubes of the bundle of tubes to thus obtain suitable support for said tubes, protecting them from vibrations experienced by the exchanger. In this middle position the length between vibration nodes is reduced to half on both sides of the baffle.
  • Another option is to place the only baffle at one of the ends of the tubes of the bundle of tubes, such that stagnation zones are prevented.
  • the second region present in the at least one opening of the baffle provides high speed coolant jets between the tubes of the bundle of tubes, thus eliminating fluid recirculation zones, for example, those occurring between said tubes if the exchanger comprises baffles such as those of the state of the art.
  • the number of baffles required for proper cooling of the tubes of the bundle of tubes is less if the exchanger incorporates the baffles of the present invention than if it incorporates baffles existing in the state of the art. This is because each baffle supports each of the tubes of the bundle of tubes while at the same time increases the coefficient of convection in the entire section of the bundle of tubes.
  • a heat exchanger according to the second inventive aspect has the projection of the main plate of one or more baffles, where said projection does not have a free area between the baffle and the shell for the passage of a coolant.
  • the passage of coolant only occurs through the at least one opening of the baffle, such that the trajectory of said coolant flow is concentrated between the passage regions between the tubes of the bundle of heat exchanger tubes.
  • the present invention relates to a device adapted for providing suitable support for the tubes of the bundle of tubes present in a heat exchanger, in addition to a homogeneous distribution of coolant flow around said tubes.
  • FIG 1 shows a particular example of a grooved baffle (1) according to the first inventive aspect, comprising openings (1.1).
  • the baffle (1) according to this embodiment is configured by means of a planar plate contained in a main plane.
  • the openings (1.1) have been obtained by means of die cutting and correspond to areas free of material. These areas free of material are in turn comprised by two regions (R1, R2), the so-called first regions (R1) and second regions (R2).
  • Figure 2 shows an enlarged portion of the baffle shown in Figure 1 which distinguishes first regions (R1) and first regions (R2).
  • each of said openings (1.1) has a directrix axis X-X' subdividing said opening (1.1) such that the first regions (R1) are distributed on the sides of said directrix axis X-X' in an alternating manner.
  • the second region (R2) allows attaching the entire set of first regions (R1) on the projection of the plate forming the grooved baffle (1) in a single opening (1.1).
  • Figure 2 shows the distribution of the openings (1.1) of the preceding example in detail.
  • the edge defining the opening (1.1) shown at the upper end is a free edge, and the drawing further distinguishes the so-called attachment segments (1.1.1), i.e., those segments of the free edge intended for being in contact with the tube and giving rise to attachment by welding, and a continuous line (1.1.2) for the rest of the free edge which is not in contact with the tube.
  • FIG. 3 shows another embodiment of the grooved baffle (1).
  • the openings (1.1) do not extend the entire width of the baffle but rather passage for two rows of tubes is obtained by means of two openings (1.1) that are not connected to one another.
  • Each of these openings (1.1) in turn comprises regions (R1, R2) of the preceding example and both openings share a directrix axis X-X'. Therefore, the gap between the openings (1.1) gives rise to a stiffening element allowing better handling of the baffle (1) during assembly, making it stronger.
  • FIG 4 shows another embodiment of the grooved baffle (1).
  • the openings (1.1) are distributed according to a regular pattern on the main plate of the baffle (1), in a symmetrical manner according to the two main directions of said main plate, one of them being parallel to a directrix axis X-X' and the other one being transverse to said directrix axis X-X'.
  • each of the openings (1.1) has a directrix axis X-X' which is in turn an axis of symmetry of said opening (1.1).
  • the plate of the baffle (1) has two main directions, the horizontal and the vertical, given its rectangular configuration. Nevertheless, both this pattern and the one shown in the all the described embodiments can be reproduced inside a baffle (1) formed by a plate with any perimetral configuration.
  • said openings (1.1) comprise regions (R1, R2), the first regions (R1) being distributed according to a regular pattern around the second region (R2) that connects the plurality of first regions (R1), said second region (R2) being at the center of the plurality of first regions (R1).
  • Figure 5 shows another embodiment of the grooved baffle (1).
  • the openings (1.1) are distributed according to a regular pattern on the main plate of the baffle (1), directrix axes X-X' of said openings (1.1) forming a specific angle with respect to one of the main directions of the main plate forming the baffle (1).
  • Directrix axes X-X' of each of the openings (1.1) are parallel to one another.
  • each of the openings (1.1) comprises regions (R1, R2) where the first regions (R1) are distributed in an alternating manner on both sides of directrix axis X-X', whereas the second regions (R2) connect the plurality of first regions (R1) along directrix axis X-X'.
  • Figure 6 shows another embodiment of the grooved baffle (1), comprising the same distribution of the configuration of the opening (1.1) as in the embodiment shown in Figure 5 , but in this case, the plurality of first regions (R1) arranged in an alternating manner on both sides of directrix axis X-X' of each opening (1.1) are shown more spaced apart according to the direction of said directrix axis X-X'.
  • Figure 7 shows another embodiment of the grooved baffle (1).
  • the openings (1.1) are distributed according to one of the main directions of the main plate of the baffle (1), said direction coinciding with the direction of directrix axis X-X' of each opening (1.1).
  • first regions (R1) are aligned along directrix axis X-X', each consecutive pair of first regions (R1) being joined together by a second region (R2).
  • Figures 8 and 9 show other embodiments of the grooved baffle (1).
  • the openings (1.1) are distributed on the main plate of the baffle (1), said openings (1.1) forming a specific angle with respect to one of the main directions of the main plate forming the baffle (1).
  • Directrix axes X-X' of each of the openings (1.1) are parallel to one another.
  • first regions (R1) are arranged along directrix axis X-X', each consecutive pair of first regions (R1) being joined together by a second region (R2).
  • Figure 9 shows second regions (R2) that are wider than those shown in Figure 8 , giving rise to larger passages for the coolant.
  • Figure 12 shows another embodiment of the grooved baffle (1).
  • the openings (1.1) are distributed along the main plate of the baffle (1) according to the embodiment described in Figure 3 , the features of this embodiment being compatible with any of the distributions of openings (1.1) described above in any of the preceding examples.
  • a perimetral flange obtained by means of stamping on the perimetral edge of the main plate of the baffle (1), for example, is included in the grooved baffle (1).
  • the addition of this flange allows better seating of the baffle (1) in the shell of the heat exchanger, such that it improves damping of vibrations to which said exchanger is subjected.
  • the flanges or necks are made by means of deep drawing or stamping on the main plate of the baffle (1), for example.
  • the necks can be continuous, completely surrounding the perimeter of the openings (1.1).
  • Figure 13 shows an embodiment of the grooved baffle (1) according to Figure 12 , in this case, a plurality of said grooved baffles (1) already assembled on the bundle of heat exchanger tubes.
  • This drawing shows different grooved baffles (1) which are separated by a distance on the longitudinal direction of said heat exchanger tubes. Said tubes are housed in regions (R1) of each grooved baffle (1), and the necks located on the perimeter in said regions (R1) are welded to each of the tubes housed in the regions.
  • the gap between each tube is defined by the gap between regions (R1), i.e., by regions (R2).
EP14382490.2A 2014-12-02 2014-12-02 Gerilltes prallblech für einen wärmetauscher Withdrawn EP3029407A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14382490.2A EP3029407A1 (de) 2014-12-02 2014-12-02 Gerilltes prallblech für einen wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14382490.2A EP3029407A1 (de) 2014-12-02 2014-12-02 Gerilltes prallblech für einen wärmetauscher

Publications (1)

Publication Number Publication Date
EP3029407A1 true EP3029407A1 (de) 2016-06-08

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104956060A (zh) * 2012-10-25 2015-09-30 西班牙博格华纳排放系统公司 流动偏转器
DE102016103226A1 (de) * 2016-02-24 2017-08-24 Airbus Ds Gmbh Rohrbündel, Rohrbündelwärmetauscher und Verfahren zu deren Herstellung
WO2018190450A1 (ko) * 2017-04-14 2018-10-18 주식회사 코렌스 가스튜브 지지용 배플을 구비하는 이지알 쿨러
WO2019066388A1 (ko) * 2017-09-29 2019-04-04 주식회사 경동나비엔 관체형의 열교환기
CN110291354A (zh) * 2017-02-15 2019-09-27 卡萨尔公司 带挡板的管壳式装置
US10502451B2 (en) * 2017-05-02 2019-12-10 Rheem Manufacturing Company Diffuser plates and diffuser plates assemblies
US10619932B2 (en) * 2015-10-23 2020-04-14 Hyfra Industriekuhlanlagen Gmbh System for cooling a fluid with a microchannel evaporator
WO2020239734A1 (de) * 2019-05-28 2020-12-03 Stamixco Ag Rohrbündel-wärmeübertrager mit baugruppen/einbauelementen aus umlenkflächen und leitstegen
US11193715B2 (en) 2015-10-23 2021-12-07 Hyfra Industriekuhlanlagen Gmbh Method and system for cooling a fluid with a microchannel evaporator
US11226139B2 (en) 2019-04-09 2022-01-18 Hyfra Industriekuhlanlagen Gmbh Reversible flow evaporator system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2150826A1 (de) * 1971-08-27 1973-04-13 Babcock & Wilcox Co
US20080173436A1 (en) * 2007-01-23 2008-07-24 Bobbye Kaye Baylis Plastic intercooler
US20080190593A1 (en) * 2007-02-09 2008-08-14 Xi'an Jiaotong University Single shell-pass or multiple shell-pass shell-and-tube heat exchanger with helical baffles
FR3002316A1 (fr) * 2013-02-19 2014-08-22 Dcns Echangeur de chaleur monophasique du type a chicanes ameliore et plaque de cloisonnement pour un tel echangeur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2150826A1 (de) * 1971-08-27 1973-04-13 Babcock & Wilcox Co
US20080173436A1 (en) * 2007-01-23 2008-07-24 Bobbye Kaye Baylis Plastic intercooler
US20080190593A1 (en) * 2007-02-09 2008-08-14 Xi'an Jiaotong University Single shell-pass or multiple shell-pass shell-and-tube heat exchanger with helical baffles
FR3002316A1 (fr) * 2013-02-19 2014-08-22 Dcns Echangeur de chaleur monophasique du type a chicanes ameliore et plaque de cloisonnement pour un tel echangeur

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104956060B (zh) * 2012-10-25 2017-09-12 西班牙博格华纳排放系统公司 流动偏转器
CN104956060A (zh) * 2012-10-25 2015-09-30 西班牙博格华纳排放系统公司 流动偏转器
US11193715B2 (en) 2015-10-23 2021-12-07 Hyfra Industriekuhlanlagen Gmbh Method and system for cooling a fluid with a microchannel evaporator
US11408680B2 (en) 2015-10-23 2022-08-09 Hyfra Industriekuhlanlagen Gmbh System for cooling a fluid with a microchannel evaporator
US10619932B2 (en) * 2015-10-23 2020-04-14 Hyfra Industriekuhlanlagen Gmbh System for cooling a fluid with a microchannel evaporator
DE102016103226A1 (de) * 2016-02-24 2017-08-24 Airbus Ds Gmbh Rohrbündel, Rohrbündelwärmetauscher und Verfahren zu deren Herstellung
CN110291354A (zh) * 2017-02-15 2019-09-27 卡萨尔公司 带挡板的管壳式装置
WO2018190450A1 (ko) * 2017-04-14 2018-10-18 주식회사 코렌스 가스튜브 지지용 배플을 구비하는 이지알 쿨러
US10502451B2 (en) * 2017-05-02 2019-12-10 Rheem Manufacturing Company Diffuser plates and diffuser plates assemblies
US11566816B2 (en) 2017-05-02 2023-01-31 Rheem Manufacturing Company Diffuser plates and diffuser plate assemblies
US11199340B2 (en) 2017-05-02 2021-12-14 Rheem Manufacturing Company Diffuser plates and diffuser plate assemblies
US11156404B2 (en) 2017-09-29 2021-10-26 Kyungdong Navien Co., Ltd. Shell-and-tube heat exchanger
WO2019066388A1 (ko) * 2017-09-29 2019-04-04 주식회사 경동나비엔 관체형의 열교환기
US11226139B2 (en) 2019-04-09 2022-01-18 Hyfra Industriekuhlanlagen Gmbh Reversible flow evaporator system
US11644243B2 (en) 2019-04-09 2023-05-09 Hyfra Industriekuhlanlagen Gmbh Reversible flow evaporator system
WO2020239734A1 (de) * 2019-05-28 2020-12-03 Stamixco Ag Rohrbündel-wärmeübertrager mit baugruppen/einbauelementen aus umlenkflächen und leitstegen

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