US3249155A - Plate-type heat exchanger - Google Patents

Plate-type heat exchanger Download PDF

Info

Publication number
US3249155A
US3249155A US259345A US25934563A US3249155A US 3249155 A US3249155 A US 3249155A US 259345 A US259345 A US 259345A US 25934563 A US25934563 A US 25934563A US 3249155 A US3249155 A US 3249155A
Authority
US
United States
Prior art keywords
passages
plates
fluid
plate
grooves
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
US259345A
Other languages
English (en)
Inventor
Huet Andre
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3249155A publication Critical patent/US3249155A/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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/356—Plural plates forming a stack providing flow passages therein

Definitions

  • the object of the present invention is an improvement of thi-s'type of heat exchanger, according to which improvement there are provided grooves or small protrusions over a part of or over the entire surface of the plates, which grooves preferably extend in the general direction of the flow of fluid circulating along the plates, or may of the fluid flow passages, which variations lead to changes of pressure and direction of flow of the fluids, these being advantageous for the exchange of heat between the fluids.
  • one of the fluids which circulates in the exchanger is a dirty fluid as may be, for example, the heating fluid employed in air heaters for boilers
  • those sides of the plates which face the passages through which this dirty fluid flows are not grooved and the grooves or protrusions then are only provided on those sides of the plates which face the passages traversed by the non-dirty fluid, in this case air which it is desired to heat.
  • FIG. 1 is a schematic cross-section of a heat exchanger having parallel corrugated plates, and suitable for heating air for a boiler.
  • FIG. 2 shows in perspective a partial view of the plates of the heat exchanger shown in FIG. 1 and which are in accordance with the present invention.
  • FIG. 3 is a transverse cross-section of a plate of the heat exchanger shown in FIG. 2.
  • FIGS. 4a and 4b are plan views of plates of heat exchangers showing some variants of the fonrnof the grooves which can be employed on the surface of the .plates.
  • FIG. 5 is a perspective view of two superimposed heat exchanger plates, in which plates the grooves extend in two respective directions, and are inclined with respect to the direction of flow of the fluid between the plates.
  • FIG. 1 shows, in a schematic manner, and in crosssection, an air heater constituted by a nest of parallel plates a, corrugated in a non-symmetrical manner, and providing between them passages b and c.
  • the passages c are traversed by heating fluid, for example gas coming out of the boiler furnace and flowing in the direction of the arrows A inside a housing h.
  • heating fluid for example gas coming out of the boiler furnace and flowing in the direction of the arrows A inside a housing h.
  • air to be heated circulates in the direction of arrows B, and which enters perpendicularly to the plane of the figure, at the upper part of the passages and leaves, also perpendicularly to the plane of the figure, at the lower part of the said passages.
  • each corrugation of the plates is not symmetrical, that is to say, each corrugation is formed of a first portion, short in length and steeply sloped, followed by a second portion, longer and less steeply sloped than the first portion.
  • the plates are so arranged with respect to each other that there is a restriction of the passage b or 0 between adjacent plates, in the neighbourhood of the apex of a corrugation.
  • the plates a are, either over one of their surfaces, or over both surfaces, or over a part only of their surface, provided with grooves, or small protrusions, preferably orientated in the general direction of the flow of the fluid.
  • the fluid which circulates in passages c is a dirty heating fluid (coming from a boiler furnace) and preferably the surfaces of the plates a which face the passages c are left smooth.
  • air circulating through the passages b, in the direction of the arrows B, is clean, and grooves are provided on the surfaces of the plates a which face the passages b.
  • FIG. 2 shows a part of the heat exchanger shown in FIG. 1, and in which grooves d, arranged parallel with the direction of flow of the fluids, are provided on the surfaces of the plates a which face the passages b, in which circulates clean hot air.
  • F'IG.- 3 shows in cross-section the parallel grooves d provided on the plate a.
  • these grooves shall extend in the direction of the flow of the fluid, and it can be arranged, as shown schematically in FIGS. 4a and 4b, that for the flow in the direction of arrows B, the grooves may extend perpendicularly to this direction, as shown at e (FIG. 4a). These grooves may also be of a herringbone pattern as shown at 1 (FIG. 4b).
  • the grooves g can, as seen in FIG. 5, be slightly inclined to the direction of fluid flow B.
  • a grooves'g are inclined in one direction with respect to the direction B, while for the plate a which is parallel to the plate a, grooves g, shown in chain-dotted lines in FIG. 5 are inclined in an opposite direction with respect to the direction B.
  • the degree of depth or height of the grooves or ridges is of the order of l millimetre to A of a millimetre.
  • the plates may be closer to each other than shown in FIG. 1, so that the passages for the fluids which exchange heat, may have a width of the order of 1 millimetre or even of a millimetre.
  • the ridges, grooves or other protrusions provided on the plates are closer or more distant from each other depending on their position on the plate, that is to say according to whether they are closer to or more distance from the entry or exit of the fluid which is to circulate in the passage between two plates.
  • the distance between the ridges, grooves or other protrusions may also be affected by their position on the plate in relation to the corrugations, which may be provided in the plates.
  • the grooves may be situated in the neighbourhood of the restrictions of the passage cross-section, or to the contrary, in the divergent parts of the passages.
  • the plate surface available for heat exchange is increased, and in principle doubled, which has been found to improve the coeflicient of heat exchange from 1.5 to 2 times, depending on whether the plate is grooved on one or both of its surfaces.
  • the obstruction to the flow of fluid which circulates in the passages caused by the grooves breaks up the fluid boundary layer which, as is known, tends to adhere to the plate and is. detrimental to the satisfactory heat exchange.
  • the protrusions provided on the plates also have the effect of stiffening them, and the result is that it is possible to employ thinner plates to resist higher pressures.
  • the supporting ties arranged between the plates may be dispensed 'With or reduced in number. The flow of fluids between the plates is thereby facilitated, and the pressure losses suffered by the circulating fluids inside the exchanger are diminished.
  • the ridges, grooves or protrusions may be provided during hot or cold rolling of the material for the plates, by employing of one or two roll cylinders upon which have been machined the negatives of the impressions which it is desired to obtain.
  • the patterns also may be obtained by machining or by pressing.
  • a plate-type heat exchanger comprising a housing, a plurality of spaced plates arranged in said housing and defining passages between adjacent pairs of said plates, alternate ones of said passages constituting first fluid-flow passages and the intervening passages constituting second fluid-flow passages, a first fluid inlet in said housing in communication with one end of each of said first passages, a first fluid outlet in said housing in communication with the other end of each of said first passages, a second fiiud inlet in said housing in communication with one end of each of said second passages, a second fluid outlet in said housing in communication with the other end of each of said second passages, and a plurality of closely adjacent small grooves with intervening ridges provided in both of the opposing surfaces of each pair of plates defining each of said flrst-fluid-low passages to provide said plates with striated surfaces, the ridges of each of said surfaces being spaced from the opposing surface of the other plate of each said pair of plates defining each of said first flow passages and
  • a plate-type heat exchanger according to claim 1, in which the grooves provided in one such opposing surface extend obliquely to the direction of fluid flow through said first passages, and the grooves provided in the other such opposing surface extend obliquely in an opposite respect to the direction of fluid flow through said first passages.
  • a plate-type heat exchanger according to claim 1, in which the opposing surfaces of each pair of said plates defining said second fluid-flow passages are smooth and ungrooved.
  • a plant-type heat exchanger according to claim 1 in which said grooves have a depth of the order of one millimeter.
US259345A 1962-03-23 1963-02-18 Plate-type heat exchanger Expired - Lifetime US3249155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR892019A FR1325843A (fr) 1962-03-23 1962-03-23 échangeur de chaleur à lames rainurées

Publications (1)

Publication Number Publication Date
US3249155A true US3249155A (en) 1966-05-03

Family

ID=8775180

Family Applications (1)

Application Number Title Priority Date Filing Date
US259345A Expired - Lifetime US3249155A (en) 1962-03-23 1963-02-18 Plate-type heat exchanger

Country Status (3)

Country Link
US (1) US3249155A (fr)
CH (1) CH386462A (fr)
FR (1) FR1325843A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354949A (en) * 1964-01-18 1967-11-28 Renault Tubular radiator with fins
US3759323A (en) * 1971-11-18 1973-09-18 Caterpillar Tractor Co C-flow stacked plate heat exchanger
US4313427A (en) * 1979-01-24 1982-02-02 Mcalister Roy E Heat exchanger
US4313494A (en) * 1978-05-22 1982-02-02 Carl Johan Lockmans Ingenjorsbyra Plate heat exchanger
US4316436A (en) * 1977-03-04 1982-02-23 Mcalister Roy E Heat exchanger
US4518544A (en) * 1983-01-20 1985-05-21 Baltimore Aircoil Company, Inc. Serpentine film fill packing for evaporative heat and mass exchange
US4905313A (en) * 1989-03-17 1990-02-27 Custodis-Ecodyne Gas/liquid contact apparatus
US5174928A (en) * 1990-01-31 1992-12-29 Silk Partnership Gas and liquid contacting process
US6206350B1 (en) 1998-11-25 2001-03-27 Baltimore Aircoil Company, Inc. Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self spacing fill-sheets
DE19963373A1 (de) * 1999-12-28 2001-07-12 Abb Alstom Power Ch Ag Vorrichtung zur Kühlung einer, einen Strömungskanal umgebenden Strömungskanalwand mit wenigstens einem Rippenzug
US6260830B1 (en) 1998-11-25 2001-07-17 Baltimore Aircoil Company, Inc. Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self-spacing fill-sheets
US6314756B1 (en) * 2000-09-07 2001-11-13 Praxair Technology, Inc. Structured packing with asymmetric crimp pattern
US20150219405A1 (en) * 2014-02-05 2015-08-06 Lennox Industries Inc. Cladded brazed alloy tube for system components
US20220341637A1 (en) * 2020-01-14 2022-10-27 Daikin Industries, Ltd. Shell-and-plate heat exchanger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2648220B1 (fr) * 1989-06-12 1991-12-20 Commissariat Energie Atomique Echangeur de chaleur forme de plaques ondulees et superposees
AUPN123495A0 (en) * 1995-02-20 1995-03-16 F F Seeley Nominees Pty Ltd Contra flow heat exchanger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE552477A (fr) * 1956-01-19
US1662870A (en) * 1924-10-09 1928-03-20 Stancliffe Engineering Corp Grooved-plate heat interchanger
FR845942A (fr) * 1937-11-15 1939-09-05 Silkeborg Maskinfabrik Plaque pour appareils échangeurs de chaleur
AT199679B (de) * 1957-04-13 1958-09-25 Helmut Fischer Wärmeaustauschplatte
US3136037A (en) * 1955-10-31 1964-06-09 Olin Mathieson Method of constructing finned heat exchangers from bonded metal sheets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1662870A (en) * 1924-10-09 1928-03-20 Stancliffe Engineering Corp Grooved-plate heat interchanger
FR845942A (fr) * 1937-11-15 1939-09-05 Silkeborg Maskinfabrik Plaque pour appareils échangeurs de chaleur
US3136037A (en) * 1955-10-31 1964-06-09 Olin Mathieson Method of constructing finned heat exchangers from bonded metal sheets
BE552477A (fr) * 1956-01-19
AT199679B (de) * 1957-04-13 1958-09-25 Helmut Fischer Wärmeaustauschplatte

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354949A (en) * 1964-01-18 1967-11-28 Renault Tubular radiator with fins
US3759323A (en) * 1971-11-18 1973-09-18 Caterpillar Tractor Co C-flow stacked plate heat exchanger
US4316436A (en) * 1977-03-04 1982-02-23 Mcalister Roy E Heat exchanger
US4313494A (en) * 1978-05-22 1982-02-02 Carl Johan Lockmans Ingenjorsbyra Plate heat exchanger
US4313427A (en) * 1979-01-24 1982-02-02 Mcalister Roy E Heat exchanger
US4518544A (en) * 1983-01-20 1985-05-21 Baltimore Aircoil Company, Inc. Serpentine film fill packing for evaporative heat and mass exchange
US4905313A (en) * 1989-03-17 1990-02-27 Custodis-Ecodyne Gas/liquid contact apparatus
US5174928A (en) * 1990-01-31 1992-12-29 Silk Partnership Gas and liquid contacting process
US6206350B1 (en) 1998-11-25 2001-03-27 Baltimore Aircoil Company, Inc. Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self spacing fill-sheets
US6260830B1 (en) 1998-11-25 2001-07-17 Baltimore Aircoil Company, Inc. Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self-spacing fill-sheets
DE19963373A1 (de) * 1999-12-28 2001-07-12 Abb Alstom Power Ch Ag Vorrichtung zur Kühlung einer, einen Strömungskanal umgebenden Strömungskanalwand mit wenigstens einem Rippenzug
US6666262B1 (en) 1999-12-28 2003-12-23 Alstom (Switzerland) Ltd Arrangement for cooling a flow-passage wall surrounding a flow passage, having at least one rib feature
US6314756B1 (en) * 2000-09-07 2001-11-13 Praxair Technology, Inc. Structured packing with asymmetric crimp pattern
EP1186342A3 (fr) * 2000-09-07 2003-10-15 Praxair Technology, Inc. Remplissage structuré avec sertissage assymetrique
US20150219405A1 (en) * 2014-02-05 2015-08-06 Lennox Industries Inc. Cladded brazed alloy tube for system components
US20220341637A1 (en) * 2020-01-14 2022-10-27 Daikin Industries, Ltd. Shell-and-plate heat exchanger
US11747061B2 (en) * 2020-01-14 2023-09-05 Daikin Industries, Ltd. Shell-and-plate heat exchanger

Also Published As

Publication number Publication date
CH386462A (fr) 1965-01-15
FR1325843A (fr) 1963-05-03

Similar Documents

Publication Publication Date Title
US3249155A (en) Plate-type heat exchanger
US4211277A (en) Heat exchanger having internal fittings
US3111982A (en) Corrugated heat exchange structures
US6935418B1 (en) Fluid conveying tube and vehicle cooler provided therewith
CN1875240B (zh) 热交换器的流道以及带有这种流道的热交换器
US4449573A (en) Regenerative heat exchangers
US4002201A (en) Multiple fluid stacked plate heat exchanger
US3495656A (en) Plate-type heat exchanger
US2834582A (en) Plate heat exchanger
US2812165A (en) Header units for plate type heat exchanger
TW482886B (en) Heat transfer element assembly
SE411952B (sv) Vermevexlare innefattande ett flertal i ett stativ inspenda vermevexlingsplattor
US4789027A (en) Ribbed heat exchanger
US3111168A (en) Heat exchangers
US3262495A (en) Heat transfer core structure
US7044206B2 (en) Heat exchanger plate and a plate heat exchanger
US3166122A (en) Plate type heat exchangers with pairs of spaced plates and corrugated inserts
PL118511B1 (en) Plate-type heat exchanger
US2469635A (en) Steam boiler or the like having extended heat transfer surfaces
US3508607A (en) Heat exchanger
US3330336A (en) Heat exchanger tubes with longitudinal ribs
US3734178A (en) Heat exchanger
US3311166A (en) Heat exchanger
US4330035A (en) Heat exchanger
KR100228503B1 (ko) 적층형 열교환기용 튜브엘리멘트