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EP3731596A3 - Spiral heat exchanger - Google Patents

Spiral heat exchanger Download PDF

Info

Publication number
EP3731596A3
EP3731596A3 EP20169807.3A EP20169807A EP3731596A3 EP 3731596 A3 EP3731596 A3 EP 3731596A3 EP 20169807 A EP20169807 A EP 20169807A EP 3731596 A3 EP3731596 A3 EP 3731596A3
Authority
EP
European Patent Office
Prior art keywords
flow channel
fluid
heating element
inlet
outlet
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.)
Granted
Application number
EP20169807.3A
Other languages
German (de)
French (fr)
Other versions
EP3731596A2 (en
EP3731596B1 (en
Inventor
Manfred Gruber
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.)
Att Advanced Thermal Technologies GmbH
Original Assignee
Att Advanced Thermal Technologies GmbH
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 Att Advanced Thermal Technologies GmbH filed Critical Att Advanced Thermal Technologies GmbH
Publication of EP3731596A2 publication Critical patent/EP3731596A2/en
Publication of EP3731596A3 publication Critical patent/EP3731596A3/en
Application granted granted Critical
Publication of EP3731596B1 publication Critical patent/EP3731596B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • H05B3/565—Heating cables flat cables
    • 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • F24H1/103—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance with bare resistances in direct contact with the fluid
    • 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/18—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being embedded in an insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/36—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heating conductor embedded in insulating material
    • 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/021—Heaters specially adapted for heating liquids

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

Vorrichtung zur Erwärmung eines Fluids mittels elektrischer Energie, wobei ein zylindrisches Gehäuse (2) mit einem Einlass (3) und einem Auslass (5) für das Fluid vorgesehen ist, und der Einlass (3) mit dem Auslass (5) über einen innerhalb des Gehäuses (2) verlaufenden Strömungskanal (1) für das Fluid verbunden ist, der einen sich mit zunehmendem Abstand zur Zylinderachse auswärts windenden spiralförmigen Strömungskanalabschnitt (1a) aufweist, sowie einen sich mit abnehmendem Abstand zur Zylinderachse einwärts windenden spiralförmigen Strömungskanalabschnitt (1b). Deren Wandung wird aus einem als bahnförmiges Heizelement (4) ausgeführten elektrischen Heizelement (4) gebildet, das mit PTC-Widerstandselementen versehen ist. Der vorgeschlagene Strömungskanal (1) ermöglicht es, dass sich beidseits des spiralförmig angeordneten Heizelements (4) an jeder Stelle Fluide mit Temperaturen befinden, deren Durchschnitt jeweils konstant ist. Dadurch wird der unerwünschte Effekt einer Reduktion der Heizleistung durch den PTC-Effekt eliminiert, was die mögliche Heizleistung der Vorrichtung in einem gegebenen Bauraum drastisch erhöht.Device for heating a fluid by means of electrical energy, wherein a cylindrical housing (2) with an inlet (3) and an outlet (5) for the fluid is provided, and the inlet (3) with the outlet (5) via an inside of the Housing (2) running flow channel (1) for the fluid is connected, which has a spiral flow channel section (1a) winding outwards with increasing distance from the cylinder axis, and a spiral flow channel section (1b) winding inwards with decreasing distance from the cylinder axis. Its wall is formed from an electrical heating element (4) designed as a web-shaped heating element (4), which is provided with PTC resistance elements. The proposed flow channel (1) makes it possible that on both sides of the spirally arranged heating element (4) there are fluids at every point with temperatures whose average is constant. This eliminates the undesirable effect of reducing the heating power due to the PTC effect, which drastically increases the possible heating power of the device in a given installation space.

EP20169807.3A 2019-04-23 2020-04-16 Spiral heat exchanger Active EP3731596B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT601042019A AT522500B1 (en) 2019-04-23 2019-04-23 Spiral heat exchanger

Publications (3)

Publication Number Publication Date
EP3731596A2 EP3731596A2 (en) 2020-10-28
EP3731596A3 true EP3731596A3 (en) 2020-11-04
EP3731596B1 EP3731596B1 (en) 2021-06-16

Family

ID=70292842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20169807.3A Active EP3731596B1 (en) 2019-04-23 2020-04-16 Spiral heat exchanger

Country Status (3)

Country Link
EP (1) EP3731596B1 (en)
AT (1) AT522500B1 (en)
ES (1) ES2886339T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240032154A1 (en) 2021-03-29 2024-01-25 MHI Health Devices, LLC. Energy efficient twin reversed spiral configured heating element and gas heater using the same
EP4418817A1 (en) 2023-02-17 2024-08-21 Röchling Automotive SE A spacer device for producing wound heating elements and a wound heating element
DE102024203750A1 (en) * 2024-04-23 2025-11-06 Volkswagen Aktiengesellschaft Heating device for heating a coolant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH101971A (en) * 1923-06-06 1923-11-01 Jost Emil Electric heating apparatus for liquids.
US5326537A (en) * 1993-01-29 1994-07-05 Cleary James M Counterflow catalytic device
EP1426720A1 (en) * 2002-11-22 2004-06-09 HONDA MOTOR CO., Ltd. Heat storage apparatus
KR20130107764A (en) * 2012-03-23 2013-10-02 홍성훈 Electric instant hot water heating tube

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104673B1 (en) 1982-09-24 1987-11-19 Onofrio Rocchitelli Heating device for the glass washing fluid of motor vehicles and the like
DE29618194U1 (en) 1996-08-29 1996-12-12 GEA Canzler GmbH, 52351 Düren Spiral heat exchanger
WO1999057492A1 (en) * 1998-05-05 1999-11-11 Thermatrix, Inc. A device for thermally processing a gas stream, and method for same
DE19837923C1 (en) 1998-08-20 2000-01-20 Hans Biermaier Thermal sterilizer for liquids, such as drinking water, which uses a counter current flow spiral heat exchanger
KR100762010B1 (en) 2006-07-07 2007-09-28 윤국선 Induction heating type thermal mat
DE102009021656A1 (en) * 2009-05-16 2010-11-18 Wmf Württembergische Metallwarenfabrik Ag Instantaneous water heater and method for controlling and regulating such
WO2011072453A1 (en) * 2009-12-18 2011-06-23 Advanced Materials Enterprises Company Limited Water heating apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH101971A (en) * 1923-06-06 1923-11-01 Jost Emil Electric heating apparatus for liquids.
US5326537A (en) * 1993-01-29 1994-07-05 Cleary James M Counterflow catalytic device
EP1426720A1 (en) * 2002-11-22 2004-06-09 HONDA MOTOR CO., Ltd. Heat storage apparatus
KR20130107764A (en) * 2012-03-23 2013-10-02 홍성훈 Electric instant hot water heating tube

Also Published As

Publication number Publication date
EP3731596A2 (en) 2020-10-28
EP3731596B1 (en) 2021-06-16
AT522500B1 (en) 2020-12-15
ES2886339T3 (en) 2021-12-17
AT522500A1 (en) 2020-11-15

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