US3805745A - Boiler for use with gaseous fuel or oil - Google Patents

Boiler for use with gaseous fuel or oil Download PDF

Info

Publication number
US3805745A
US3805745A US00258444A US25844472A US3805745A US 3805745 A US3805745 A US 3805745A US 00258444 A US00258444 A US 00258444A US 25844472 A US25844472 A US 25844472A US 3805745 A US3805745 A US 3805745A
Authority
US
United States
Prior art keywords
tube
tubes
tube sheet
boiler
copper
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.)
Expired - Lifetime
Application number
US00258444A
Other languages
English (en)
Inventor
L Block
L Ashton
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.)
Raypak Inc
Original Assignee
Raypak 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 Raypak Inc filed Critical Raypak Inc
Priority to US00258444A priority Critical patent/US3805745A/en
Priority to NL7305336A priority patent/NL7305336A/xx
Priority to DE2323986A priority patent/DE2323986A1/de
Priority to CA171,534A priority patent/CA972637A/en
Priority to BE131228A priority patent/BE799676A/xx
Priority to AU55990/73A priority patent/AU464510B2/en
Priority to JP48057882A priority patent/JPS4943243A/ja
Priority to IT68563/73A priority patent/IT985968B/it
Priority to GB2562873A priority patent/GB1393650A/en
Priority to FR7319738A priority patent/FR2186637B1/fr
Application granted granted Critical
Publication of US3805745A publication Critical patent/US3805745A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B15/00—Water-tube boilers of horizontal type, i.e. the water-tube sets being arranged horizontally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • 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
    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling

Definitions

  • the boiler has two horizontal rows of steel tubes with Appl. No.: 258,444 steel fins staggered with respect to each other and extending between tube sheets. Headers are associated with the tube sheets to provide multi ple passes.
  • the tube sheets are in sections having joints between the sections so that the tube sheets are articulated to allow freedom of axial expansion relatively of tubes in re- [58] Field of Search...
  • tubes are copper lined and the faces of tubes sheets within headers are copper clad with co pper inserts ds of copper tube linings with copper cladn e g .m .m w S T N m M e m C e D E P N U m B 122/358 M dings.
  • the invention is a type of boiler adapted for use of gaseous fuel and also oil. It incorporates finned tubes which are unconventional in the oil fired boiler industry. Copper tubes tend to react chemically with the sulfur in the fuel and oil and, therefore, have not been used in oil fired boilers.
  • the conventional single pass water tube boiler used for oil firing is a straight tube boiler, the tubes being made of steel. Because of the many tubes, the boiler requires a significant amount of stored water within the tubes, and this has a definite operating disadvantage.
  • the tubes are the same length, and the tube sheets are parallel.
  • the bottommost tubes After it has been fired for a significant period of time, the bottommost tubes attain a higher temperature than do the upper tubes. Therefore, the bottom tubes expand to a greater length than do the upper tubes.
  • the tube sheets are no longer parallel, but have a tendency to converge out of parallelism, which produces various types of common failures known in the art.
  • a tube tends to expand, and the tube sheet tends to remain stationary.
  • the tube will tend to slide in the tube sheet; and after repeated ON-OFF cycles, the tendency of this tube to slide develops into a leak.
  • the water flows from the header into the space between the tube and tube sheets and into the combustion product area.
  • the tube sheet In another type of failure, the tube sheet is forced out of parallel and actually causes a deformation of the tube. There is, in effect, a cold work of the tube metal which eventually may result in a crack through the wall of the tube.
  • a conventional multi-pass Water tube boiler the water enters into. the inlet of a header which includes a partition.
  • the water then flows through the first group of tubes, normally referred to as the first pass, and into the opposite header.
  • the water makes a U turn and flows through the second pass tubes and then back to the original header.
  • the water then again makes a U turn, flows through the third pass tubes into the opposite header and then flows out of the boiler.
  • the third pass tubes attain a greater temperature and, therefore, a greater length than the second pass tubes.
  • the second pass tubes attain a greater temperature and a greater length than the first pass tubes.
  • the same problem exists as in the single pass boilerin that the tube sheets are forced out of parallel. The tube ends tend to move relative to the tube sheet, and the ends of the tube tend to be cold worked and develop cracks.
  • Tube sheets and headers are arranged to provide for multiple passes through the boiler.
  • the tube sheets are constructed in sections with joints between sections so that the tube sheets at each end are articulated to provide for freedom of relative axial expansion of tubes to fully prevent failure at the ends of the tubes.
  • the tube sheet sections are suspended by suspension members which allow relative movement of tube sheet sections at both ends in a direction axially of the tubes.
  • the tubes are copper lined and the faces of tube sheets within headers are copper clad or covered. Further, the ends of the copper liners are joined or connected with the tube sheet covers by copper inserts so that fluid within the boiler is only exposed to the copper. Further objects in addition to those set forth above reside in the provision of the particular tube arrangements in the boiler; the particular construction of the tube sheets to prevent tube failures; and the full copper lining within the interior of the boiler.
  • a further object of the invention is to provide a novel means and technique for tube replacement which is adapted particularly to the boiler construction having two-horizontal rows of tubes.
  • FIG. 1 is a partly broken away schematic perspective view of a preferred form of the invention
  • FIG. 2 is an exploded perspective view illustrating the articulated tube sheet and header construction
  • FIG. 3 is an end view of the exemplary form of the invention.
  • FIG. 4 is a sectional view taken along the line 44 of FIG. 3;
  • FIG. 5 is a sectional view taken along the line 55 of FIG. 3;
  • FIG. 6 is a partial sectional view of a tube end in a tube sheet illustrating copper lining and cladding
  • FIG. 7 is a view similar to FIG. 6 after expanding or flaring the end of the tube and liner;
  • FIG. 8 is a schematic view illustrating the articulated tube sheet, headers, and multi-pass construction
  • FIG. 9 is a detail view illustrating a joint between tube sheet sections
  • FIG. 10 is a schematic view illustrating replacement of a tube in the upper row of the boiler.
  • FIG. 11 is a schematic view illustrating replacement of a tube in the lower row of the boiler.
  • FIG. 1 is a broken away perspective view of the boiler of this invention.
  • a burner 10 capable of operating on fuel oil and gaseous fuel.
  • a refractory type combustion chamber 12 having refractory l3 similar to that used in copper finned boilers insures that substantially all of the heat flows vertically through the heat exchanger 14 and into the flue outlet 16.
  • the heat exchanger consists of two horizontal rows of tubes. The two rows are staggered to attain maximum exposure to radiant heat and optimum contact with the flue products.
  • FIGS. 1 through 4 show the heat exchanger tubes located in two horizontal rows and in staggered orientation.
  • FIG 8 shows a four-pass arrangement of tubes as will be described more in detail presently.
  • Numerals 20 and 22 designate a tube in each row.
  • the tubes are steel with steel fins extending between tube sheets 28 and 28.
  • the tube sheets 28 and 28 are made in segments joined or articulated together. If this were not so, the tubes would be forced out of parallel (along the horizontal axis), as the water flowing through the last pass is significantly hotter than the water flowing through the first pass. Thus, the tubes of the last pass attain a higher temperature that the tubes of the previous passes. Here again, the unequal expansion of tubes would create a problem if it were not for the segmented tube sheets.
  • FIG. 8 is a schematic plan view of the four pass heat exchanger employing the use of segmented tube sheets.
  • the segments or tube sheet sections are designated 34-38.
  • the first pass tubes 42 attain the length of L, after the boiler attains the normal operating temperature.
  • the water enters inlet header 44 and then flows through the opposite return heater 46 into the second pass tubes 48 and is again heated.
  • These tubes attain the length of L
  • These tubes are free to expand to their new length because tube sheet section 35 is separate and not mechanically (not rigidly) attached to tube sheet section 34.
  • the water then flows through another return header 52 and enters the third pass tubes 54.
  • the third pass tubes attain the length of L and are free to expand because tube sheet section 38 is not mechanically attached to tube sheet section 37.
  • the third pass water then enters still another return header 56 and flows through the fourth pass tubes 58.
  • These tubes attain the length of L They are free to attain their expanded length without being put into constraint.
  • Tube sheet section 36 is not mechanically attached to tube sheet section 35.
  • the third pass tubes 58 connect to outlet header 64. In this manner, the boiler eliminates the third and most important deficiency of the conventional boiler.
  • the segmented or vertebrae tube sheet sections permit free expansion of the tubes to any length to which they may expand without:
  • the problem in designing segmented tube sheet sections is preventing the leakage of flue products between the individual tube sheet segments.
  • the tube sheet sections have grooves or recesses milled into the vertical edges thereof as shown at and 72 in FIG. 9.
  • a stainless steel link 74 is positioned in the grooves.
  • the link is substantially narrower than the width of the milled grooves or slots.
  • the tube sheet segments are free to move relative to one another causing the link to oscillate within the two grooves or slots.
  • the link prevents the leakage of flue products between the tube sheet sections, the vertical edges of the tube sheet sections being juxtaposed as shown with the slots opposed to each other and link 74 extending or bridging between them.
  • Silicone rubber or some other resilent material capable of withstanding the temperature maybe used instead of the link 74 being of stainless steel to bridge the gap between the tube sheet segments. Because of the resilience of the material, the tube sheet segments are free to move relative to one another; and the resilient material seals and prevents leakage of flue products.
  • FIGS. 2 through 5 show the preferred detailed construction of the tube sheet sections, headers, and the manner of support of the sheets in the combustion chamber.
  • FIG. 8 there are two headers at one end of the boiler and three at the other end where the inlet and outlet headers are positioned. Otherwise, the construction at opposite ends of the tube passes are alikel
  • the headers have a configuration as illustrated in FIG. 2.
  • Inlet header 44 has an inlet boss 80
  • outlet header 64 has an outlet boss 82.
  • On the top and bottom of the headers are a series of mounting lugs.
  • tie bolts which engage the lugs 83-85 and which thread into threaded holes in the tube sheets as may be seen in FIGS. 4 and 5.
  • the tie bolts are designated at 90, 90, 90a, 900'.
  • the tie bolt 90 At the outer end of the tie bolt 90 are spaced nuts 92 and 94 with a spacer sleeve 96 captured between them.
  • Numeral 100 designates a support or suspension member
  • numeral 102 designates a second suspension member.
  • the lower end of suspension member 100 has apertures 104 and 106 as may be seen in FIG. 5.
  • Tie bolt 90 and sleeve 96 are in aperture 104 and a corresponding tie bolt and sleeve are in aperture 106. All of the tie bolt assemblies are alike, so only one need be described in detail.
  • the upper end of suspension member 100 is secured to frame member 110 which is part of the steel frame which supports the refractory material constituting the combustion chamber by bolt 112.
  • two of the suspension members are provided at one end and one at the other end designated at 101. They are all alike.
  • Suspension member 100 bridges between and supports headers 44 and 52
  • suspension member 102 bridges between and supports headers 52 and 64. There is an assembly at the opposite end which corresponds to members 100 and 102.
  • Headers 44 and 52 are held together at the bottom by straps 113 and 115. Headers 52 and 64 are held together at the bottom by corresponding straps.
  • sleeve 96 spaces nuts 92 and 94. This construction is the same for all of the support members, such that the headers and tube sheetsat both ends can freely expand in a direction axially of the tubes in the manner illustrated and described in connection with FIG. 8.
  • header 52 it is secured to tube sheet 35 with gasket 116 between the header and tube sheet for sealing.
  • Numeral 120 designates copper cladding or covering on the face of tube sheet 35 within header 52. This construction is similar within all headers. The copper covering is directly on the surface of the tube sheet, and the gasket is of a type such that it is between only the contacting surfaces of the header and tube sheet.
  • FIGS. 6 and 7 are partial sectional views of the joint between the end of the tube and the tube sheets, such as tube 20 and tube sheet section 35.
  • the tubes are made of steel with steel fins as designated at 126.
  • tube 20 is a copper sleeve 128, the end of which extends beyond the tube itself.
  • Tube sheet section 35 has a bore to receive the tube, and it has a counterbore 132 as shown.
  • the copper cladding or covering on the tube sheet section is shown at 120, and it has an inturned circular flange 134 which extends back into counterbore 132 as shown.
  • Numeral 138 designates a copper insert ring having an angular cross section as shown such that it has an in-turned flange part 140 which abuts against steel tube 20. This flange has a bore 142 into which the end of copper sleeve 128 fits. Insert ring 138 extends into counterbore 132 with flange 134 trapped between the insert and wall of counterbore 132.
  • FIG. 6 shows the construction of the joint before final flaring of the end of the tube.
  • FIG. 7 shows the final construction in which the end of steel tube 20 and lining 128 are flared outwardly at an angle as shown so that insert ring 138 is deformed.
  • Flange 140 is angled outward slightly as shown with the deformation as shown at 144 at the corner of the insert ring.
  • This construction provides a firm joint with the parts firmly juxtaposed together so that the parts not made of copper are shielded from the liquid in the boiler.
  • the headers themselves are preferably of bronze so that complete copper/bronze waterways are realized without any other surfaces being exposed to the liquid in the boiler.
  • the lining is expanded tightly within the steel tubes without any air gap to provide good heat transfer.
  • the expanded end of the steel tube locks to the tube sheet and provides a leak-proof joint.
  • ring 138 is omitted and a flexible nonmetallic ring is used which might be an O-ring positioned in counterbore 132 between flange 134 and the end of tube 20.
  • the replacement of a conventional straight tube is rather simple.
  • the tube to be replaced is cut, usually with a cutting torch, between the tube sheets.
  • the section of tubing remaining in the tube sheet is collapsed with a chisel and then forced out of the tube sheet hole.
  • the replacement tube is then fed through one tube sheet and into the other tube sheet.
  • the tube is then expanded at each end with a conventional tube roller.
  • FIGS. 10 and 11 An arrangement has been evolved for replacement of tubes in the field which employs the use of a special field replacement tube.
  • Regular tubes are designated at 20 and 22 and numeral 21 designates a special field replacement tube.
  • Numeral 13 designates the refractory of the combustion chamber.
  • This field replacement tube has several fins removed from one end 23. This end of tube is swaged into a smaller diameter which permits the insertion of the undersized tube end in one hole of the tube sheet in a position as seen in FIGS. 10 and 11.
  • the tube is forced into this hole until the opposite end of the finned tube clears the opposite tube sheets.
  • the tube is then lowered to a horizontal position, and the standard end of the tube is inserted into the tube sheet. Both tube ends are then expanded to make a tight joint with the tube sheet. No problem is encountered in expanding the swaged down end into a standard size tube sheet hole.
  • the tube with the swaged down end is inserted as shown and is then lowered to a horizontal position (in FIG. 10), and the opposite end of the tube is inserted in the tube sheet.
  • the standard end of the tube sheet must be rolled first. This acts to prevent rotation of the tube when the swaged down end is expanded into the tube sheet hole.
  • FIG. 10 shows replacement of a top boiler tube. This requires the removal of the two covers 15 and 16 over access openings.
  • FIG. 11 shows the replacement of a bottom boiler tube.
  • the upper covers over the access openings are first removed and lifting angles 17 and 17a are bolted to the tube sheets using the header attaching studs.
  • Tension bolts 19 and 19a are used to lift the tube sheets vertically to obtain the necessary clearance for insertion of the tube 21 as illustrated.
  • means comprising a plurality of finned tubes; and tube sheet means having the tubes extending between them, there being only two horizontal rows of tubes, the tubes in the respective rows being staggered with respect to each other so that the tubes in one row do not directly overlie tubes in another row so that tubes are exposed equally to radiant heat, the tubes being arranged so as to provide a plurality of passes so related to each other that fluid traverses the passes in sequence, said tube sheet means comprising a plurality of tube sheet sections at each end of the tubes, means providing joints between tube sheet sections allowing relative movement between adjacent tube sheet sections in the direction of the axis of the tube whereby to allow for variable expansion of tubes in different passes.
  • a boiler construction as in claim 3 adjacent tube sheet sections having portions juxtaposed against each other, said juxtaposed portions having recesses therein opposed to each other, and a sealing means disposed in the opposed recesses for allowing limited relative movement as between the juxtaposed portions.
  • means comprising tube sheets having a plurality of metal tubes extending therebetween, the ends of said tubes extending into openings in the tube sheets; means comprising copper linings within the tubes, said tube sheets having a surface forming a part of a header, said surface having a copper cladding thereon; and means whereby the ends of the copper lining are joined to said copper cladding so that fluid is exposed only to the copper.
  • a boiler construction as in claim 10 including means comprising a copper ring at the end of a tube positioned to be interposed between the end of a copper tube lining and the copper cladding on said surface of the tube sheet.
  • each of said openings in said tube sheet comprises a bore and a coun'terbore, said copper tube lining extending beyond the end of the tube at the counterbore, said copper cladding having a circular flange part extending against an extending end part of the copper lining and i an extending part in said counterbore juxtaposed against said circular flange on the copper cladding.
  • a boiler construction as in claim 15 including tube sheet sections with an associated header which provide communication betwe the tube means of one pass through the boiler and tube means of another pass through the boiler with the tube means of the different passes being free to expand axially relative to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)
  • Feeding And Controlling Fuel (AREA)
US00258444A 1972-05-31 1972-05-31 Boiler for use with gaseous fuel or oil Expired - Lifetime US3805745A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US00258444A US3805745A (en) 1972-05-31 1972-05-31 Boiler for use with gaseous fuel or oil
NL7305336A NL7305336A (de) 1972-05-31 1973-04-17
DE2323986A DE2323986A1 (de) 1972-05-31 1973-05-11 Flammenrohrkessel fuer gasfoermige und fluessige brennstoffe
CA171,534A CA972637A (en) 1972-05-31 1973-05-16 Boiler for use with gaseous fuel or oil
BE131228A BE799676A (fr) 1972-05-31 1973-05-17 Perfectionnement aux chaudieres,
AU55990/73A AU464510B2 (en) 1972-05-31 1973-05-22 Boiler for use wth gaseous fuel or oil
JP48057882A JPS4943243A (de) 1972-05-31 1973-05-25
IT68563/73A IT985968B (it) 1972-05-31 1973-05-28 Caldaia a combustibile gassoso o liquido
GB2562873A GB1393650A (en) 1972-05-31 1973-05-30 Boiler for use with gaseous fuel or oil
FR7319738A FR2186637B1 (de) 1972-05-31 1973-05-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00258444A US3805745A (en) 1972-05-31 1972-05-31 Boiler for use with gaseous fuel or oil

Publications (1)

Publication Number Publication Date
US3805745A true US3805745A (en) 1974-04-23

Family

ID=22980570

Family Applications (1)

Application Number Title Priority Date Filing Date
US00258444A Expired - Lifetime US3805745A (en) 1972-05-31 1972-05-31 Boiler for use with gaseous fuel or oil

Country Status (10)

Country Link
US (1) US3805745A (de)
JP (1) JPS4943243A (de)
AU (1) AU464510B2 (de)
BE (1) BE799676A (de)
CA (1) CA972637A (de)
DE (1) DE2323986A1 (de)
FR (1) FR2186637B1 (de)
GB (1) GB1393650A (de)
IT (1) IT985968B (de)
NL (1) NL7305336A (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3907025A (en) * 1973-04-13 1975-09-23 Columbia Gas Syst Compact heating and cooling system
US4310746A (en) * 1976-07-28 1982-01-12 Elkern Kenneth E Electric fluid heating apparatus
US4377133A (en) * 1980-06-13 1983-03-22 Mankekar Ajit D Cryogenic heater
US5782208A (en) * 1994-06-15 1998-07-21 Glowcore Acquisition Company Water boiler with metal core
US20030164232A1 (en) * 2002-02-14 2003-09-04 Mitsubishi Heavy Industries Ltd. Structure of pipe plate unit for heat exchangers and method of replacement for the pipe plate unit
US20080035077A1 (en) * 2006-08-08 2008-02-14 Noritz Corporation Heat exchanger and water heater
US20110017428A1 (en) * 2007-11-08 2011-01-27 Kyung-Dong Navien Co., Ltd. Plane type heat exchanger
ITCR20110005A1 (it) * 2011-05-25 2012-11-26 Abc Boilers Di Benelli Davide & C Snc Caldaia per il riscaldamento di un fluido termovettore
CN102980430A (zh) * 2012-11-19 2013-03-20 铜陵钱谊化工设备有限责任公司 带翻边的搪玻璃列管冷凝器列管
US20140205425A1 (en) * 2013-01-18 2014-07-24 Hamilton Sundstrand Space Systems International Oil cooling arrangement and method of cooling oil
WO2015108853A1 (en) * 2014-01-14 2015-07-23 Cummins Filtration Ip, Inc. Crankcase ventilation system heater
US20170363359A1 (en) * 2014-12-24 2017-12-21 Myong Hun CHOI Finless-type dual-pipe heat exchange apparatus
US10352585B1 (en) * 2018-02-09 2019-07-16 Theodore S. BROWN Multi-pass boiler and retrofit method for an existing single-pass boiler
IT201900016238A1 (en) * 2019-09-13 2021-03-14 Heat exchanger for boilers and similar
EP4379259A1 (de) * 2022-11-29 2024-06-05 Doosan Enerbility Co., Ltd. Verbindungsrohrträger für abwärmerückgewinnungskessel und abwärmerückgewinnungskessel damit

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5327151A (en) * 1976-08-27 1978-03-14 Hitachi Ltd Pipe fitting structure
JPS5348252A (en) * 1976-10-13 1978-05-01 Teruo Akimoto Heat exchanger
DE2758998C2 (de) * 1977-12-30 1980-02-21 Mtu Motoren- Und Turbinen-Union Muenchen Gmbh, 8000 Muenchen Rekuperator fur den Wärmeaustausch zwischen zwei Strömungsmitteln unterschiedlicher Temperaturen
US4501232A (en) * 1983-10-03 1985-02-26 Purex Pool Products, Inc. Pool or spa water heater
JPH0684188U (ja) * 1993-04-26 1994-12-02 サンデン株式会社 熱交換器
JP6086197B2 (ja) * 2012-09-29 2017-03-01 株式会社ノーリツ 熱交換器およびその製造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US123612A (en) * 1872-02-13 Improvement in compound pipes for conveying steam
US675658A (en) * 1900-08-14 1901-06-04 Henry De F Hubbard Water-tube boiler.
US1589646A (en) * 1925-07-13 1926-06-22 Irving C Hicks Feed-water heater
US2828723A (en) * 1954-07-29 1958-04-01 Avy L Miller Continuous flow water heater
US3134366A (en) * 1959-10-13 1964-05-26 Avy L Miller Flow regulator for a heater
US3380516A (en) * 1966-06-17 1968-04-30 Raypak Company Inc Heat exchanger including tube expansion means
US3534712A (en) * 1969-03-05 1970-10-20 Spencer E Reynolds Finned tube boiler section

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR745834A (fr) * 1931-12-09 1933-05-17 Brown Dispositif pour protéger contre la corrosion les plaques tubulaires en fer des échangeurs de chaleur
US2266291A (en) * 1939-01-16 1941-12-16 Fred M Young Heat exchanger
JPS4120389Y1 (de) * 1965-02-13 1966-09-27
JPS452395Y1 (de) * 1966-03-31 1970-01-30
NL6613997A (de) * 1966-10-04 1968-04-05

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US123612A (en) * 1872-02-13 Improvement in compound pipes for conveying steam
US675658A (en) * 1900-08-14 1901-06-04 Henry De F Hubbard Water-tube boiler.
US1589646A (en) * 1925-07-13 1926-06-22 Irving C Hicks Feed-water heater
US2828723A (en) * 1954-07-29 1958-04-01 Avy L Miller Continuous flow water heater
US3134366A (en) * 1959-10-13 1964-05-26 Avy L Miller Flow regulator for a heater
US3380516A (en) * 1966-06-17 1968-04-30 Raypak Company Inc Heat exchanger including tube expansion means
US3534712A (en) * 1969-03-05 1970-10-20 Spencer E Reynolds Finned tube boiler section

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3907025A (en) * 1973-04-13 1975-09-23 Columbia Gas Syst Compact heating and cooling system
US4310746A (en) * 1976-07-28 1982-01-12 Elkern Kenneth E Electric fluid heating apparatus
US4377133A (en) * 1980-06-13 1983-03-22 Mankekar Ajit D Cryogenic heater
US5782208A (en) * 1994-06-15 1998-07-21 Glowcore Acquisition Company Water boiler with metal core
US6158396A (en) * 1994-06-15 2000-12-12 Glowcore Acquisition Company, Inc. Water boiler with metal core
US20030164232A1 (en) * 2002-02-14 2003-09-04 Mitsubishi Heavy Industries Ltd. Structure of pipe plate unit for heat exchangers and method of replacement for the pipe plate unit
US6896042B2 (en) * 2002-02-14 2005-05-24 Mitsubishi Heavy Industries, Ltd. Structure of pipe plate unit for heat exchangers and method of replacement for the pipe plate unit
US7934538B2 (en) * 2006-08-08 2011-05-03 Noritz Corporation Heat exchanger and water heater
US20080035077A1 (en) * 2006-08-08 2008-02-14 Noritz Corporation Heat exchanger and water heater
US20110017428A1 (en) * 2007-11-08 2011-01-27 Kyung-Dong Navien Co., Ltd. Plane type heat exchanger
ITCR20110005A1 (it) * 2011-05-25 2012-11-26 Abc Boilers Di Benelli Davide & C Snc Caldaia per il riscaldamento di un fluido termovettore
CN102980430A (zh) * 2012-11-19 2013-03-20 铜陵钱谊化工设备有限责任公司 带翻边的搪玻璃列管冷凝器列管
US20140205425A1 (en) * 2013-01-18 2014-07-24 Hamilton Sundstrand Space Systems International Oil cooling arrangement and method of cooling oil
WO2015108853A1 (en) * 2014-01-14 2015-07-23 Cummins Filtration Ip, Inc. Crankcase ventilation system heater
US9702282B2 (en) 2014-01-14 2017-07-11 Cummins Filtration Ip, Inc. Crankcase ventilation system heater
US20170363359A1 (en) * 2014-12-24 2017-12-21 Myong Hun CHOI Finless-type dual-pipe heat exchange apparatus
US10352585B1 (en) * 2018-02-09 2019-07-16 Theodore S. BROWN Multi-pass boiler and retrofit method for an existing single-pass boiler
IT201900016238A1 (en) * 2019-09-13 2021-03-14 Heat exchanger for boilers and similar
EP4379259A1 (de) * 2022-11-29 2024-06-05 Doosan Enerbility Co., Ltd. Verbindungsrohrträger für abwärmerückgewinnungskessel und abwärmerückgewinnungskessel damit

Also Published As

Publication number Publication date
FR2186637A1 (de) 1974-01-11
JPS4943243A (de) 1974-04-23
IT985968B (it) 1974-12-30
BE799676A (fr) 1973-09-17
FR2186637B1 (de) 1976-06-11
GB1393650A (en) 1975-05-07
AU5599073A (en) 1974-11-28
CA972637A (en) 1975-08-12
NL7305336A (de) 1973-12-04
AU464510B2 (en) 1975-08-28
DE2323986A1 (de) 1973-12-13

Similar Documents

Publication Publication Date Title
US3805745A (en) Boiler for use with gaseous fuel or oil
US6026804A (en) Heater for fluids
US2044457A (en) Heat exchanger
US1862310A (en) Heat exchanger
GB2041191A (en) Heat exchanger
US4120352A (en) Device for connecting exchanger tubes to perforated plates
US2331932A (en) Thermal drum connection
US3396992A (en) Connector for hot fluid conduits
US2700375A (en) Fluid cooled furnace wall
US4632181A (en) Ceramic heat exchanger
US3380516A (en) Heat exchanger including tube expansion means
US3533379A (en) Forced draft boiler construction
JPS5927191A (ja) ヒ−トパイプ排熱回収装置
US1822698A (en) Baffle packing for heat exchangers
US1720912A (en) Heat interchanger
US2357251A (en) Multiflue heat exchanger
US2354222A (en) Fluid heat exchange installation
SE502796C2 (sv) Plattvärmeväxlare med fodrade anslutningsrör
GB863003A (en) Improvements in or relating to tubulous boilers and an improved method of forming a tube wall
US1802456A (en) Apparatus for utilizing radiant heat in heating fluids
US2797900A (en) Fluid heat exchange unit with plural header terminals
US3176761A (en) Heat exchanger
US2035309A (en) Recuperator wall
US954913A (en) Superheater.
US2133992A (en) Wall construction