FR2980263A1 - Plate heat exchanger, has sonotrode with ultrasounds, and set of plates, where excitation of plates and/or fluids allows acceleration of transfer of calories between fluids in contact and plates - Google Patents

Plate heat exchanger, has sonotrode with ultrasounds, and set of plates, where excitation of plates and/or fluids allows acceleration of transfer of calories between fluids in contact and plates Download PDF

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Publication number
FR2980263A1
FR2980263A1 FR1102808A FR1102808A FR2980263A1 FR 2980263 A1 FR2980263 A1 FR 2980263A1 FR 1102808 A FR1102808 A FR 1102808A FR 1102808 A FR1102808 A FR 1102808A FR 2980263 A1 FR2980263 A1 FR 2980263A1
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FR
France
Prior art keywords
plates
sonotrode
heat exchanger
fluids
plate heat
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.)
Pending
Application number
FR1102808A
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French (fr)
Inventor
Olivier Samson
Primius Boldo
Nicolas Gondrexon
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.)
Universite Joseph Fourier Grenoble 1
Original Assignee
Universite Joseph Fourier Grenoble 1
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 Universite Joseph Fourier Grenoble 1 filed Critical Universite Joseph Fourier Grenoble 1
Priority to FR1102808A priority Critical patent/FR2980263A1/en
Publication of FR2980263A1 publication Critical patent/FR2980263A1/en
Pending 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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/10—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by imparting a pulsating motion to the flow, e.g. by sonic vibration
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G7/00—Cleaning by vibration or pressure waves

Abstract

The heat exchanger has a sonotrode (G) with ultrasounds, and a set of plates (B), where excitation of plates and/or fluids (C) allows acceleration of transfer of calories between fluids in contact and the plates. A set of exhaust intake ports is recomposed by stacking the plates, and a set of interstitial joints (E) is arranged in a position, where the joints are directly fixed on the set of plates of the heat exchanger. The sonotrode is utilized for exciting the plates.

Description

Optimisation des échanges thermiques d'un échangeur à plaques par ajout d'une sonotrode à ultrasons Domaine technique de l'invention: La présente invention concerne un système d'excitation des plaques d'un échangeur par excitation directe des plaques ou par excitation du fluide en transit dans l'échangeur. L'excitateur ou sonotrode mu par un convertisseur à ultrasons permet suivant le montage soit de mettre en mouvement permanent ou séquentiel les plaques d'un échangeur soit de provoquer une turbulence dans un fluide en transit dans un échangeur à plaques; turbulence qui permet l'amélioration du transfert thermique entre le fluide et la plaque. Cette mise en turbulence du fluide et/ou l'excitation des plaques permet d'accélérer le transfert des calories entre les fluides en contact avec les plaques. Les dits fluides 15 circulant de part et d'autre des plaques. La technique permet, par rapport à un échangeur thermique dit classique, d'accélérer l'échange thermique par un coefficient multiplicateur important en condition d'excitation ultrasonore. 20 On comprendra dès lors l'intérêt de la technique permettant une amélioration très importante des rendements. Etat de la technique antérieure : 25 Dans un échangeur dit fluide/fluide, un fluide doit prendre ou céder ses calories. Ce transfert de calories est réalisé par l'intermédiaire de l'échangeur. L'échangeur proprement dit étant l'enveloppe permettant par contact l'extraction des calories du liquide pour les céder à un autre liquide lui aussi en contact dans une autre cavité tout en 30 préservant l'intégrité des deux fluides. En l'état il existe plusieurs types d'échangeurs dits tubulaires, à plaques, etc... l'échange des calories dans un échangeur tubulaire peut être amélioré sans difficulté grâce à l'adjonction d'une onde ultrasonore sur le tube servant d'enveloppe extérieure à 35 l'échangeur. Par contre il devient techniquement plus difficile d'exciter l'ensemble des plaques dans un échangeur à plaques en raison du nombre de plaques présentes sur ce type d'échangeur tout en préservant l'étanchéité entre les plaques. Résumé de l'invention : 40 Le premier problème que se propose de résoudre l'invention est de permettre une mise en excitation d'un échangeur à plaques grâce à un vecteur de propagation d'ondes ultrasonores. 45 Un deuxième problème est de permettre de conserver l'étanchéité entre la partie fluide entrante et le fluide caloporteur. Un troisième problème posé est de conserver le démontage aisé de l'échangeur. Optimization of the Heat Exchanges of a Plate Heat Exchanger by Adding an Ultrasonic Sonotrode Technical Field of the Invention: The present invention relates to a system for exciting the plates of a heat exchanger by direct excitation of the plates or by excitation of the fluid in transit in the exchanger. The exciter or sonotrode moved by an ultrasonic converter allows, according to the assembly, to put in permanent or sequential movement the plates of an exchanger or to cause turbulence in a fluid in transit in a plate heat exchanger; turbulence that improves the heat transfer between the fluid and the plate. This turbulence of the fluid and / or the excitation of the plates accelerates the transfer of calories between the fluids in contact with the plates. The said fluids flowing on both sides of the plates. The technique makes it possible, with respect to a conventional heat exchanger, to accelerate the heat exchange by a large multiplying coefficient under ultrasonic excitation conditions. It will therefore be understood that the interest of the technique makes it possible to improve yields considerably. STATE OF THE PRIOR ART In a fluid / fluid exchanger, a fluid must take or give up its calories. This transfer of calories is achieved through the exchanger. The actual exchanger being the envelope allowing by contact the extraction of calories from the liquid to give them to another liquid also in contact in another cavity while preserving the integrity of the two fluids. In the state there are several types of so-called tubular exchangers, plates, etc ... the exchange of calories in a tubular exchanger can be improved without difficulty thanks to the addition of an ultrasonic wave on the tube serving as outer shell to the exchanger. On the other hand, it becomes technically more difficult to excite all the plates in a plate heat exchanger because of the number of plates present on this type of exchanger while preserving the tightness between the plates. SUMMARY OF THE INVENTION The first problem to be solved by the invention is to enable excitation of a plate heat exchanger by means of an ultrasound wave propagation vector. A second problem is to maintain the seal between the incoming fluid part and the heat transfer fluid. A third problem is to keep the easy disassembly of the exchanger.

Description des dessins : L'invention sera bien comprise et ses divers avantages et différentes caractéristiques ressortiront mieux lors de la description suivante, de l'exemple non limitatif de réalisation, en référence aux dessins schématiques annexés dans lesquels : -la figure 1 représente une vue de l'échangeur et d'une sonotrode (A) directement plongé dans le fluide et d'une sonotrode (G) directement monté sur les plaques de l'échangeur. DESCRIPTION OF THE DRAWINGS The invention will be better understood and its various advantages and different characteristics will become more apparent in the following description, of the nonlimiting example of embodiment, with reference to the appended diagrammatic drawings in which: FIG. the exchanger and a sonotrode (A) directly immersed in the fluid and a sonotrode (G) directly mounted on the plates of the exchanger.

Description détaillée : Sonotrode de type (A) plongée dans les orifices d'admission ou d'échappement de l'échangeur et/ou directement fixée sur les plaques de l'échangeur et utilisée notamment pour mettre en turbulence un fluide entrant (C) ou un fluide caloporteur (D) (F) et par excitation des plaques et/ou des fluides permet d'accélérer le transfert des calories entre les fluides en contact avec les plaques. La sonotrode est idéalement placée dans les orifices d'admission ou d'échappement recomposés par l'empilage des plaques (B) et des joints intersticiels (E) et/ou directement fixée sur les plaques (B) de l'échangeur. Le choix de la tubulure permettant d'exciter soit le fluide dit entrant soit le fluide caloporteur ou les deux. Sonotrode de type (G) directement fixée sur les plaques (B) de l'échangeur permettant d'exciter une seule ou plusieurs plaques de l'échangeur. Sonotrode composée par un empilage de rondelles intermédiaires (H) facilement démontables et idéalement épaulées ou cales assurant un interstice correspondant à la valeur d'écrasement des joints (E). Rondelles (H) idéalement épaulées assurant un contact métal/métal avec la plaque ayant la fonction d'étanchéité en venant pincer chaque plaque pour leur imposer une vibration ultrasonore. L'étanchéité peut aussi se réaliser par un joint intermédiaire. Detailed Description: Sonotrode type (A) immersed in the intake or exhaust ports of the exchanger and / or directly attached to the plates of the exchanger and used in particular to turbulence an incoming fluid (C) or a heat transfer fluid (D) (F) and by excitation of the plates and / or fluids makes it possible to accelerate the transfer of the calories between the fluids in contact with the plates. The sonotrode is ideally placed in the intake or exhaust ports recomposed by the stack of plates (B) and interstitial joints (E) and / or directly attached to the plates (B) of the exchanger. The choice of tubing for exciting either the so-called incoming fluid is the heat transfer fluid or both. Sonotrode type (G) directly attached to the plates (B) of the exchanger to excite a single or more plates of the exchanger. Sonotrode composed by a stack of intermediate washers (H) easily removable and ideally shouldered or wedges providing a gap corresponding to the crushing value of the joints (E). Washers (H) ideally shouldered ensuring a metal / metal contact with the plate having the sealing function by gripping each plate to impose an ultrasonic vibration. The seal can also be achieved by an intermediate seal.

Sonotrode de forme (A) ou (G) mais non limitative, réalisée en matériel inoxydable et particulièrement en titane permettant une inocuité vis-à-vis du liquide dans lequel elle est pourrait être plongée et pouvant accueillir une Masselotte (I) de contre réaction assurant un bon équilibre vibratoire de l'ensemble sonotrode. La mise en vibration de la sonotrode peut se faire par séquences successives. Sonotrode shape (A) or (G) but not limited to, made of stainless material and particularly titanium allowing a harmless vis-à-vis the liquid in which it is could be immersed and can accommodate a Masselotte (I) against reaction ensuring a good vibratory balance of the whole sonotrode. The vibration of the sonotrode can be done in successive sequences.

La mise en vibration permet par effet induit un décolmatage en continu de l'échangeur. 45 The vibrating allows by induced effect a continuous declogging of the exchanger. 45

Claims (7)

REVENDICATIONS1) Echangeur à plaques comportant une sonotrode à ultrasons, caractérisé en ce que l'excitation des plaques et/ou des fluides permet d'accélérer le transfert des calories entre les fluides en contact et les plaques. CLAIMS1) Plate exchanger comprising an ultrasound sonotrode, characterized in that the excitation of the plates and / or fluids makes it possible to accelerate the transfer of calories between the fluids in contact and the plates. 2) Echangeur à plaques suivant la revendication 1 caractérisé en ce que le positionnement de la sonotrode peut se faire soit dans la position (A), dans les orifices d'admission (A) ou d'échappement de l'échangeur recomposés par l'empilage des plaques (B) et des joints interstitiels (E) et/ou en position (G), directement fixée sur les plaques (B) de l'échangeur. 2) plate heat exchanger according to claim 1 characterized in that the positioning of the sonotrode can be done either in the position (A), in the intake ports (A) or exhaust of the heat exchanger recomposed by the stacking plates (B) and interstitial joints (E) and / or in position (G), directly attached to the plates (B) of the exchanger. 3) Echangeur suivant la revendication 1 caractérisé en ce que la sonotrode peut exciter plusieurs plaques (B) de l'échangeur. 3) exchanger according to claim 1 characterized in that the sonotrode can excite several plates (B) of the exchanger. 4) Echangeur à plaques suivant la revendication 1 caractérisée en ce qu'il est conçu de façon à ce que l'ensemble des plaques est traversé par la sonotrode grâce à des empilages de rondelles intermédiaires facilement démontables et idéalement épaulées assurant un contact métal/métal avec la plaque ayant la fonction d'étanchéité en venant pincer chaque plaque pour leur imposer une vibration ultrasonore. 4) plate heat exchanger according to claim 1 characterized in that it is designed so that all the plates is traversed by the sonotrode through stacks of intermediate washers easily removable and ideally shouldered ensuring a metal / metal contact with the plate having the sealing function by gripping each plate to impose an ultrasonic vibration. 5) Echangeur à plaques selon la revendication 1 caractérisé en ce que la sonotrode est réalisée en matériel inoxydable et particulièrement en titane permettant une innocuité vis-à-vis du liquide dans lequel elle est pourrait être plongée. 5) plate heat exchanger according to claim 1 characterized in that the sonotrode is made of stainless material and particularly titanium allowing innocuity vis-à-vis the liquid in which it could be diving. 6) Echangeur à plaques suivant la revendication 1 caractérisé en ce que la mise en vibration permet un décolmatage en continu de l'échangeur. 6) plate heat exchanger according to claim 1 characterized in that the vibration allows continuous declogging of the exchanger. 7) Echangeur à plaques suivant la revendication 1 caractérisé en ce que la mise en vibration peut se faire par séquences successives. 7) plate heat exchanger according to claim 1 characterized in that the vibration can be done in successive sequences.
FR1102808A 2011-09-16 2011-09-16 Plate heat exchanger, has sonotrode with ultrasounds, and set of plates, where excitation of plates and/or fluids allows acceleration of transfer of calories between fluids in contact and plates Pending FR2980263A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1102808A FR2980263A1 (en) 2011-09-16 2011-09-16 Plate heat exchanger, has sonotrode with ultrasounds, and set of plates, where excitation of plates and/or fluids allows acceleration of transfer of calories between fluids in contact and plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1102808A FR2980263A1 (en) 2011-09-16 2011-09-16 Plate heat exchanger, has sonotrode with ultrasounds, and set of plates, where excitation of plates and/or fluids allows acceleration of transfer of calories between fluids in contact and plates

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FR2980263A1 true FR2980263A1 (en) 2013-03-22

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FR1102808A Pending FR2980263A1 (en) 2011-09-16 2011-09-16 Plate heat exchanger, has sonotrode with ultrasounds, and set of plates, where excitation of plates and/or fluids allows acceleration of transfer of calories between fluids in contact and plates

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021023702A1 (en) * 2019-08-06 2021-02-11 Ms Ultraschall Technologie Gmbh Method for increasing the service life of components through which fluid flows

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH204977A (en) * 1938-08-27 1939-05-31 Oerlikon Maschf Heat exchanger.
FR1187933A (en) * 1957-11-07 1959-09-17 Daimle Benz Ag Method and device for increasing the heat transfer coefficient, in particular in the case of heat exchangers
FR2552536A1 (en) * 1983-09-28 1985-03-29 Laguilharre Sa Method for the indirect transfer of heat by using ultrasonic waves, and a heat exchanger, particularly a falling stream evaporator, for implementing the method
EP1048918A2 (en) * 1999-04-28 2000-11-02 Haruo Uehara Evaporator
WO2003004956A1 (en) * 2001-07-06 2003-01-16 Bstech Co.,Ltd. Feed-back control system for heat exchanger with natural shedding frequency
JP2004084995A (en) * 2002-08-23 2004-03-18 Hikari Yamashiro Absorber and absorption type refrigerator using it
JP2004132580A (en) * 2002-10-09 2004-04-30 Toyota Central Res & Dev Lab Inc Heat exchanger
FR2882664A1 (en) * 2005-03-03 2006-09-08 Elsametal Sa Fluidized bed reactor for liquids/solids reactions has finishing compartment with ultrasound emitters at upper end of reactor body
DE102005025248A1 (en) * 2005-06-02 2006-12-07 Forschungszentrum Karlsruhe Gmbh Liquid guiding system used in micro-fluid technology e.g. as a heat exchanger comprises a guiding component with plate-like elements with fluid guides between end elements to which are connected devices for producing an ultrasound signal

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH204977A (en) * 1938-08-27 1939-05-31 Oerlikon Maschf Heat exchanger.
FR1187933A (en) * 1957-11-07 1959-09-17 Daimle Benz Ag Method and device for increasing the heat transfer coefficient, in particular in the case of heat exchangers
FR2552536A1 (en) * 1983-09-28 1985-03-29 Laguilharre Sa Method for the indirect transfer of heat by using ultrasonic waves, and a heat exchanger, particularly a falling stream evaporator, for implementing the method
EP1048918A2 (en) * 1999-04-28 2000-11-02 Haruo Uehara Evaporator
WO2003004956A1 (en) * 2001-07-06 2003-01-16 Bstech Co.,Ltd. Feed-back control system for heat exchanger with natural shedding frequency
JP2004084995A (en) * 2002-08-23 2004-03-18 Hikari Yamashiro Absorber and absorption type refrigerator using it
JP2004132580A (en) * 2002-10-09 2004-04-30 Toyota Central Res & Dev Lab Inc Heat exchanger
FR2882664A1 (en) * 2005-03-03 2006-09-08 Elsametal Sa Fluidized bed reactor for liquids/solids reactions has finishing compartment with ultrasound emitters at upper end of reactor body
DE102005025248A1 (en) * 2005-06-02 2006-12-07 Forschungszentrum Karlsruhe Gmbh Liquid guiding system used in micro-fluid technology e.g. as a heat exchanger comprises a guiding component with plate-like elements with fluid guides between end elements to which are connected devices for producing an ultrasound signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021023702A1 (en) * 2019-08-06 2021-02-11 Ms Ultraschall Technologie Gmbh Method for increasing the service life of components through which fluid flows

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