LOW MELTING IRON BASED BRAZE FILLER METALS FOR HEAT EXCHANGER APPLICATIONS

    公开(公告)号:US20220316430A1

    公开(公告)日:2022-10-06

    申请号:US17641941

    申请日:2020-10-09

    摘要: Iron-based braze filler alloys having unexpectedly narrow melting temperature ranges, low solidus and low liquidus temperatures, as determined by Differential Scanning calorimetry (DSC), while exhibiting high temperature corrosion resistance, good wetting, and spreading, without deleterious significant boride formation into the base metal, and that can be brazed below 1,100 C contains a) nickel in an amount of from 0% to 35% by weight, b) chromium in an amount of from 0% to 25% by weight, c) silicon in an amount of from 4% to 9% by weight, d) phosphorous in an amount of from 5% to 11% by weight, e) boron in an amount of from 0% to 1% by weight, and f) the balance being iron, the percentages of a) to f) adding up to 100% by weight. The braze filler alloys or metals have sufficient high temperature corrosion resistance to withstand high temperature conditions of Exhaust Gas Recirculation Coolers.

    DUMBBELL SHAPED PLATE FIN
    2.
    发明申请

    公开(公告)号:US20210356218A1

    公开(公告)日:2021-11-18

    申请号:US16872560

    申请日:2020-05-12

    申请人: Hanon Systems

    IPC分类号: F28F3/04 F02M26/29

    摘要: A heat exchanger element for use in a heat exchanger includes an outer wall formed into a tubular shape including a first portion and a second portion. The first portion is arranged parallel to and is spaced apart from the second portion. A plurality of fin structures extends between the first portion and the second portion of the outer wall. Each of the fin structures defines a flow channel configured to provide fluid communication between an outer surface of the first portion of the outer wall and an outer surface of the second portion of the outer wall. An interior of the outer wall is configured to receive a first fluid while an exterior of the outer wall and each of the flow channels defined by the fin structures are configured to receive a second fluid in heat exchange relationship with the first fluid.

    EGR COOLER WITH INCONEL DIFFUSER
    3.
    发明申请

    公开(公告)号:US20210047989A1

    公开(公告)日:2021-02-18

    申请号:US16539560

    申请日:2019-08-13

    申请人: Caterpillar Inc.

    IPC分类号: F02M26/22 F02M26/29

    摘要: An EGR cooler includes an elongated, stainless steel cooler housing with a first end having a stainless steel end plate and a second end opposite the first end, and an Inconel diffuser having an inlet end defining a gas inlet and an outlet end welded to the stainless steel end plate. The stainless steel end plate having a first thickness and the outlet end of the Inconel diffuser including a sidewall having a second thickness that is 50% or less of the first thickness.

    Hollow Fin Tube Structure at Inlet of EGR Cooler

    公开(公告)号:US20190331066A1

    公开(公告)日:2019-10-31

    申请号:US15967134

    申请日:2018-04-30

    IPC分类号: F02M26/29

    摘要: An EGR cooler may include an EGR cooler housing having top, bottom and side walls, inlet and outlet end walls disposed at opposite ends, and a longitudinal axis extending in a direction of exhaust gas flow from the inlet end to the outlet end. A plurality of cooling tubes extend through the EGR cooler between the top and bottom walls, and are arranged in a cooling tube array to form an exhaust gas receiving area at an upstream side of the cooling tube array proximate the inlet end wall so that exhaust gas flowing into the EGR cooler through an exhaust gas inlet opening will flow into the exhaust gas receiving area and then disperse through the cooling tube array. A pitch distance between the cooling tubes may be greater proximate the longitudinal axis than proximate the side walls to promote flow through, instead of around, the cooling tube array.

    EXHAUST GAS RECIRCULATION COOLER
    5.
    发明申请

    公开(公告)号:US20190145358A1

    公开(公告)日:2019-05-16

    申请号:US16191159

    申请日:2018-11-14

    发明人: Oliver Grill

    摘要: An exhaust gas recirculation cooler may include a heat exchanger block including a first mounting flange, a diffuser including a second mounting flange, and at least one non-return valve arranged between the heat exchanger block and the diffuser. The exhaust gas recirculation cooler may also include a valve carrier which supports the at least one non-return valve and on which a gasket is arranged. The heat exchanger block may be connected via the first mounting flange directly to the second mounting flange of the diffuser. The valve carrier may be arranged between the heat exchanger block and the diffuser, and with the gasket may seal a sealing point between the first mounting flange and the second mounting flange. The diffuser may include an outwardly closed recess with a peripheral rim structured to accommodate the valve carrier. The rim may define the second mounting flange.