US3225823A - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
US3225823A
US3225823A US167816A US16781662A US3225823A US 3225823 A US3225823 A US 3225823A US 167816 A US167816 A US 167816A US 16781662 A US16781662 A US 16781662A US 3225823 A US3225823 A US 3225823A
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United States
Prior art keywords
plates
stack
housing
heat exchanger
tension plate
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Expired - Lifetime
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US167816A
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English (en)
Inventor
Frohlich Franklin
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Individual
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Individual
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    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F28D9/0068—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements with means for changing flow direction of one heat exchange medium, e.g. using deflecting zones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/006—Constructions of heat-exchange apparatus characterised by the selection of particular materials of glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction

Definitions

  • This invention relates generally to a heat exchanger, and more particularly to a heat exchanger provided with improved means for mounting a stack of brittle heat exchanger elements within a housing.
  • a heat exchanger unit which consists of a stack of parallel, technical silicate plates that are spaced by the inter-position of spacer strips.
  • the spacer strips between each pair of plates. are parallel and spaced, and the spacer strips between alternate pairs of plates are arranged at an angle with respect to each other. In this manner, separate channels are defined between alternate pairs of plates for the passage of separate heat exchanging fluids.
  • the object of the present invention is to provide tensioning means for pressing together the elements of a heat exchanger unit the parallel, spaced plates of which are arranged at an angle relative to the horizontal.
  • the brittle, technical silicate plates lie in parallel vertical planes.
  • the end plates of the heat exchanger unit are supported by rigid tension plates connected with the heat exchanger housing walls for movement in the-longitudinal direction of the stack.
  • Elastic means for example, layers of a resilient, compressible material such as rubberare arranged contiguously between the tension plates and the housing side walls parallel therewith.
  • the tension plates Prior to mounting of the heat exchanger unit in the housing, the tension plates are moved outwardly toward the housing walls to compress the resilient layers. After the space between the tension plates is substantially filled by the stack of plates and spacer strips, the holding forces on the tension plates are progressively released. Owing to the expansion of the compressed resilient layers, the tension plates are uniformly pressed with considerable force against the opposite ends of the stack. The axial compressive force developed in the stack by the tension plates causes the heat exchanger elements to be pressed together in tight sealing engagement.
  • the means for displacing the tension plates outwardly toward the housing walls comprise bolts having horizontal portions that extend through aligned openings in the tension plates, the resilient layers, and the housing walls. Adjusting nuts are threadably mounted upon the free ends of the bolt shank portions. In order that the tension plates have planar surfaces in contiguous engagement with the end heat exchanger plates of the stack, the head porions of the bolts are fiat and are recessed in the tension plates.
  • FIG. 1 is a vertical section taken along line 11 of FIG. 2;
  • FIG. 2 is a vertical section taken along line 22 of FIG. 1.
  • the heat exchanger includes a housing 11 having front and rear Walls 11a and 11b, respectively, a pair of side walls 11c and 1111, a bottom wall 12, and a top wall 13.
  • Front wall 11a is provided with upper and lower openings 14 and 15, respectively
  • side wall 11d is provided with upper and lower openings 16 and 17, respectively.
  • Horizontal dividing wall 18 extends inwardly from wall 11d intermediate openings 16 and 17, and curved baffles 19 extend inwardly from side wall 11c (see FIG. 2)
  • Horizontal supporting beams 23 extend between the front and rear walls and supportby means of resilient rubber strips 24the heat exchanger unit 20.
  • This unit consists of a stack of parallel heat exchanger plates 30 formed of a technical silicate, such as glass. Hozizontal spacer strips 31 are arranged between alternate pairs of plates and vertical spacer strips 32 are' arranged between the remaining pairs of plates. The spacer strips are also formed of a technical silicate.
  • Rigid metal tension plates are arranged in contiguous engagement with the end heat exchanger plates of the stack, and layers 38 of a resilient, compressible material, such as rubber, are arranged contiguously between the tension plates and housing walls 11a and 11b, respectively.
  • Bolts 34 having head portions recessed in the tension plates, extend through aligned openings in the tension plates 33, the resilient layers 38,
  • Stability is imparted to the heat exchanger unit by the pressure beams 26 that rest on resilient strips 25 supported by the upper edges of the plates.
  • Upper and lower horizontal partition walls 27 and 22 are supported intermediate beams 26 and 23, respectively, and the housing side walls as shown in FIG. 2.
  • Sealing strip 28, mounted on the free extremity of horizontal dividing wall 18, is in sealing engagement with the edges of the heat exchanger plates.
  • a fluid spray tube 40 is mounted between walls 11a and 11b.
  • Pressure rails 26 are now mounted upon resilient strips 25 on the upper edges of the heat exchanger plates, wall 27 and tube 40 are mounted in the housing as shown, and top wall 13 is lowered into position to close the heat exchanger chamber.
  • a first heat exchanging fluid medium M enters the heat exchanger chamber via opening 14 and passes downwardly between alternate pairs of plates through the channels defined between vertical spacer strips 32. This first fluid is exhausted from the chamber via outlet 15 as shown by the arrows in FIG. 1.
  • a second heat exchanging fluid M enters the chamber via opening 17 and passes through those horizontal channels (defined between alternate pairs of plates by horizontal spacer strips 31) that lie below horizontal dividing wall 18.
  • This second fluid is deflected upwardly by the lower baflle 19 and horizontally backwardly by the upper bafile 19, whereby the second medium passes through those horizontal passages that lie at a greater elevation than dividing wall 18. Since the first medium passes vertically between alternate pairs of plates and the second medium passes horizontally between the remaining plates, heat transfer between the two media is readily accomplished.
  • cleaning or temperature modifying fluids may be sprayed downwardly between alternate pairs of plates via the vertical channels defined between spacer strips 32.
  • heat exchanger unit 20 As a consequence of the resilient manner in which heat exchanger unit 20 is mounted in the housing, the transmittal of breakage stressescaused by thermal expansion or contraction of the housing elements or by external forces applied to the housing, for example-to the brittle heat exchanger plates is avoided.
  • a heat exchanger comprising housing means including at least one vertical wall defining a chamber;
  • said supporting means including a rigid metal tension plate spaced from said vertical wall and contiguously engaging one end of said stack, and means supporting the other end of said stack;
  • resilient means biasing said tension plate solely in a first direction to apply a longitudinal compressive force upon said stack of plates, said resilient means comprising a layer of an elastic, compressible material intermediate and contiguous with said housing wall and said tension plate;
  • said screw means comprises a bolt having a head portion mounted in a recess in said tension plate and a shank portion extending through aligned openings in said resilient layer and said housing wall, and a nut threadably mounted on said shank on the opposite side of said housing wall from said tension plate.
  • said means supporting the other end of said stack comprises a second rigid tension plate contiguously engaging said other end of the stack, second resilient means arranged between said second tension plate and said housing for References Cited by the Examiner UNITED STATES PATENTS 10/1947 Kintner 257-245] 3/1960 Fohrhalty et al. 69

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  • 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)
US167816A 1961-02-27 1962-01-22 Heat exchanger Expired - Lifetime US3225823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH236361A CH391752A (de) 1961-02-27 1961-02-27 Wärmeaustauscher

Publications (1)

Publication Number Publication Date
US3225823A true US3225823A (en) 1965-12-28

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Application Number Title Priority Date Filing Date
US167816A Expired - Lifetime US3225823A (en) 1961-02-27 1962-01-22 Heat exchanger

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US (1) US3225823A (de)
CH (1) CH391752A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299272A (en) * 1979-05-17 1981-11-10 James Howden America, Inc. Industrial heat pipe energy recovery package unit
US4823867A (en) * 1981-09-11 1989-04-25 Pollard Raymond J Fluid flow apparatus
US4852640A (en) * 1986-03-28 1989-08-01 Exothermics-Eclipse Inc. Recuperative heat exchanger
US5442921A (en) * 1993-02-22 1995-08-22 Epri Targeted fluid delivery system
US5632328A (en) * 1995-12-05 1997-05-27 Ford Motor Company Heat exchanger assembly
US6044902A (en) * 1997-08-20 2000-04-04 Praxair Technology, Inc. Heat exchange unit for a cryogenic air separation system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428880A (en) * 1942-09-26 1947-10-14 Arco Welding & Machine Works I Pasteurizing apparatus
US2927781A (en) * 1957-11-15 1960-03-08 Gen Electric Means for clamping tubular members

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428880A (en) * 1942-09-26 1947-10-14 Arco Welding & Machine Works I Pasteurizing apparatus
US2927781A (en) * 1957-11-15 1960-03-08 Gen Electric Means for clamping tubular members

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299272A (en) * 1979-05-17 1981-11-10 James Howden America, Inc. Industrial heat pipe energy recovery package unit
US4823867A (en) * 1981-09-11 1989-04-25 Pollard Raymond J Fluid flow apparatus
US4852640A (en) * 1986-03-28 1989-08-01 Exothermics-Eclipse Inc. Recuperative heat exchanger
US5442921A (en) * 1993-02-22 1995-08-22 Epri Targeted fluid delivery system
US5784887A (en) * 1993-02-22 1998-07-28 Chow; Winston Targeted fluid delivery system
US5632328A (en) * 1995-12-05 1997-05-27 Ford Motor Company Heat exchanger assembly
US6044902A (en) * 1997-08-20 2000-04-04 Praxair Technology, Inc. Heat exchange unit for a cryogenic air separation system

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Publication number Publication date
CH391752A (de) 1965-05-15

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