EP2759796B1 - Self-pumping heat exchange unit - Google Patents
Self-pumping heat exchange unit Download PDFInfo
- Publication number
- EP2759796B1 EP2759796B1 EP14382024.9A EP14382024A EP2759796B1 EP 2759796 B1 EP2759796 B1 EP 2759796B1 EP 14382024 A EP14382024 A EP 14382024A EP 2759796 B1 EP2759796 B1 EP 2759796B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchange
- exchange unit
- self
- rotary rod
- pumping
- 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.)
- Active
Links
- 238000005086 pumping Methods 0.000 title claims description 22
- 239000012530 fluid Substances 0.000 claims description 39
- 238000004140 cleaning Methods 0.000 claims description 11
- 238000007790 scraping Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 4
- -1 i.e. Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- F28G3/00—Rotary appliances
- F28G3/08—Rotary appliances having coiled wire tools, i.e. basket type
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- 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
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
- F28F13/125—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation by stirring
-
- 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
- F28F19/008—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using scrapers
-
- 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
- F28G3/00—Rotary appliances
- F28G3/10—Rotary appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0042—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for foodstuffs
-
- 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
- F28F2250/08—Fluid driving means, e.g. pumps, fans
Definitions
- the present invention belongs to the field of heat exchange apparatuses, and more specifically to machines for heat exchange between fluids having the same or different characteristics, applicable in different sectors, such as the food sector, pharmaceutical sector, health sector, etc.
- the main object of the present invention is a heat exchange unit which fundamentally stands out because it provides a self-pumping effect and keeps the exchange surface clean at all times, improving the heat transfer coefficient and allowing a substantial reduction in head losses through its inner and outer tubes, said head losses being generated by friction of the actual inner walls of the tubes.
- Machines for heat exchange between fluids which generally have at least one inner tube through which the "product fluid”, i.e., fluid to be heated or cooled, circulates and an outer tube or shell, through which the "service fluid”, i.e., heat transfer fluid, circulates are known today.
- heat exchangers the inner conduits of which are provided with cleaning means, thus providing a self-cleaning effect on their inner surface and allowing maintenance and a prolonged service life of said heat exchangers, reducing the dead time thereof, are known in the current state of the art.
- An example of the aforementioned exchangers can be found in Spanish patent application ES2158752 .
- the international patent Application WO2013/007842 A1 describes a heat-exchanging device, that can be used for the heat treatment of products such as juices, pulp and other food, liquid or particulate products. Nevertheless, current machines for heat exchange between fluids have several problems and drawbacks among which the following stand out:
- the present invention alleviates the aforementioned drawbacks by providing a self-pumping heat exchange unit which successfully reduces head loss through its conduits, substantially optimizing the heat transfer coefficient, and also allowing regulating and obtaining different pumping flow rates for the product fluid, i.e., fluid to be heated or cooled.
- the heat exchange unit object of the invention is of the type comprising an outer shell provided with an inlet and an outlet for a "service” fluid, i.e., a heat carrier fluid, being able to be glycol or cold water vapor, thermal oil, etc.; at least one hollow inner tube housed inside the outer shell and also linked to an inlet and an outlet for a product fluid, i.e., fluid to be heated or cooled; an elongated rotary rod arranged inside the at least one inner tube and having cleaning means for cleaning the inner wall of the at least one inner tube.
- a "service” fluid i.e., a heat carrier fluid
- a product fluid i.e., fluid to be heated or cooled
- an elongated rotary rod arranged inside the at least one inner tube and having cleaning means for cleaning the inner wall of the at least one inner tube.
- head losses must be understood as losses generated by friction of the actual inner walls of the tubes.
- the heat exchange unit described herein stands out fundamentally because it additionally comprises: scraping elements linked to the rotary rod and suitable for scraping and detaching the product fluid accumulated or fixed on the inner wall of the at least one inner tube; and an endless spiral also linked to the rotary rod, dimensionally suitable for running along and surrounding the rod longitudinally through the spaces existing between the scraping elements, said endless spiral being suitable for displacement of the product fluid circulating through the at least one inner tube, generating a self-pumping effect.
- the scraping elements preferably have an elongated planar configuration, thus allowing covering the entire the inner surface of the inner tubes, increasing cleaning efficiency.
- the heat exchange unit comprises three inner tubes. So by means of varying the rotational speed of the rods existing in the inner tubes, and therefore of the endless spiral, it is possible to achieve different pumping flow rates for the product fluid circulating through said inner tubes, which allows improving the heat transfer coefficient and reducing the head losses generated by friction of the actual inner walls of the tubes.
- the heat exchange unit herein described has been envisaged to be applicable in the food sector, health sector, environmental sector or industrial sector. It can be also used as a regenerative unit, i.e., using one and the same product fluid in both parts of the unit, namely, the shell and the inner tubes, thus recovering the actual energy of the product fluid.
- the present invention provides a heat exchange unit according to claim 1 which, in addition to efficiently removing residues from the inner wall of the tubes, reducing head loss and substantially improving the heat transfer coefficient, also stands out for obtaining a "self-pumping effect" of the product fluid circulating through said inner tubes, which makes it possible for the requirements of the outer pump to be lower, even to the extent of being able to dispense with said outer pump in some cases, being a more efficient, economical and viable alternative solution than the self-cleaning systems of current heat exchangers.
- Figure 1 shows a general view of the self-pumping heat exchange unit (1) which comprises:
- the heat exchange unit (1) additionally comprises a main geared motor (60) connected through a central shaft (70), shown in Figure 4 , with a main gear (71) made of stainless steel, the latter is in turn connected with secondary gears (72) which are linked to the ends of each of the rotary rods (30), as shown in Figure 3 .
- Said secondary gears (72), depicted in Figures 3 and 4 are manufactured from a plastic material, such that in addition to acting as a safety fuse element, it allows preventing the irritating noise generally produced by the transmissions of the gears.
- Said Figure 1 also shows an auxiliary geared motor (80) which is coupled to the main geared motor (60) and which allows separating the heat exchange unit into two blocks when connected with a threaded screw and a nut for a quick, simple and comfortable opening of the heat exchange unit (1), facilitating inspection and/or maintenance tasks by qualified personnel.
- the unit incorporates a lower frame (90), also shown in Figure 1 , making up the base support of the heat exchange unit (1), and which in the present embodiment further comprises an additional telescopic prolongation (91) provided with wheels (92) in the lower portion, thus facilitating its movement and allowing it to take up minimum space.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Cleaning In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201330088A ES2481190B1 (es) | 2013-01-25 | 2013-01-25 | Unidad de intercambio térmico autobombeante |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2759796A2 EP2759796A2 (en) | 2014-07-30 |
EP2759796A3 EP2759796A3 (en) | 2015-05-27 |
EP2759796B1 true EP2759796B1 (en) | 2019-06-05 |
Family
ID=50068953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14382024.9A Active EP2759796B1 (en) | 2013-01-25 | 2014-01-27 | Self-pumping heat exchange unit |
Country Status (4)
Country | Link |
---|---|
US (1) | US20140209274A1 (es) |
EP (1) | EP2759796B1 (es) |
ES (2) | ES2481190B1 (es) |
PT (1) | PT2759796T (es) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170367370A1 (en) * | 2014-12-23 | 2017-12-28 | Carrier Corporation | Freezing Cylinder Beater |
CN106736328B (zh) * | 2016-11-30 | 2021-02-09 | 重庆渝青机械配件制造有限公司 | 多纽带式扰流件加工工艺 |
AT519546B1 (de) * | 2017-04-12 | 2018-08-15 | Brandstetter Johann | Wärmetauscher |
NL2024720B1 (en) | 2020-01-21 | 2021-09-09 | Ireliemar B V | Heat exchanger and use of heat exchanger |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1184612A (fr) * | 1957-07-12 | 1959-07-23 | Holo Flite Int Inc | Dispositif d'échange de chaleur |
FR1214074A (fr) * | 1958-01-22 | 1960-04-06 | Zieren Chemiebau Gmbh Dr A | Perfectionnements apportés aux procédés et dispositifs pour l'échange de chaleurentre des fluides liquides ou gazeux susceptibles de salir les surfaces d'échange dechaleur |
FR2224728A1 (en) * | 1973-04-09 | 1974-10-31 | Rouchy Christian | Spirally wound scraper rod - for automatic internal cleaning of heat exchanger tubes |
US3848289A (en) * | 1973-04-16 | 1974-11-19 | Chemetron Corp | Scraper blade |
JPS564467Y2 (es) * | 1975-11-15 | 1981-01-30 | ||
US4240401A (en) * | 1978-02-21 | 1980-12-23 | Arvin Industries, Inc. | Fireplace heat exchanger |
FR2439630A1 (fr) * | 1978-10-23 | 1980-05-23 | Montage Cie Indle | Dispositif de nettoyage de tubes conduisant des gaz charges d'impuretes et d'epuration des gaz |
ES2158752B1 (es) | 1998-07-16 | 2002-06-16 | Hrs Spiratube S L | Mejoras en intercambiadores termicos para tratamiento de liquidos. |
DE102009026173A1 (de) * | 2009-02-24 | 2010-08-26 | Georg Hipp Maschinenbau Gmbh | Wartungsarmer Wärmetauscher |
WO2012007856A1 (en) * | 2010-07-12 | 2012-01-19 | Evert Frederik Potgieter | Industrial shell and tube heat exchanger |
EP2410279A1 (de) * | 2010-07-21 | 2012-01-25 | Thomas Hipp | Wartungsarmer Wärmetauscher mit rotierenden Abstreifern |
US20150083366A1 (en) * | 2011-03-11 | 2015-03-26 | Janis Zakis | Multi-surface heat exchange with vacuum capability and magnetic scrapers |
ES2398978B2 (es) * | 2011-07-14 | 2013-10-10 | Antonio MORENO GARCÍA | Dispositivo intercambiador térmico mejorado para tratamiento de líquidos y otros. |
JP4937430B1 (ja) * | 2011-09-30 | 2012-05-23 | 三菱電機株式会社 | モータ |
-
2013
- 2013-01-25 ES ES201330088A patent/ES2481190B1/es active Active
- 2013-10-07 US US14/047,712 patent/US20140209274A1/en not_active Abandoned
-
2014
- 2014-01-27 ES ES14382024T patent/ES2735632T3/es active Active
- 2014-01-27 EP EP14382024.9A patent/EP2759796B1/en active Active
- 2014-01-27 PT PT14382024T patent/PT2759796T/pt unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2759796A3 (en) | 2015-05-27 |
EP2759796A2 (en) | 2014-07-30 |
ES2481190B1 (es) | 2015-01-16 |
ES2481190A1 (es) | 2014-07-29 |
PT2759796T (pt) | 2019-07-25 |
US20140209274A1 (en) | 2014-07-31 |
ES2735632T3 (es) | 2019-12-19 |
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