EP0411669A2 - Disposition pour chauffer ou refroidir un liquide - Google Patents

Disposition pour chauffer ou refroidir un liquide Download PDF

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Publication number
EP0411669A2
EP0411669A2 EP90114994A EP90114994A EP0411669A2 EP 0411669 A2 EP0411669 A2 EP 0411669A2 EP 90114994 A EP90114994 A EP 90114994A EP 90114994 A EP90114994 A EP 90114994A EP 0411669 A2 EP0411669 A2 EP 0411669A2
Authority
EP
European Patent Office
Prior art keywords
arrangement according
container
magnets
inlet
heat exchanger
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
EP90114994A
Other languages
German (de)
English (en)
Other versions
EP0411669A3 (en
EP0411669B1 (fr
Inventor
Karl Bossert
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.)
BOSSERT, GERDI
Original Assignee
Bossert Gerdi
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 Bossert Gerdi filed Critical Bossert Gerdi
Priority to AT90114994T priority Critical patent/ATE98009T1/de
Publication of EP0411669A2 publication Critical patent/EP0411669A2/fr
Publication of EP0411669A3 publication Critical patent/EP0411669A3/de
Application granted granted Critical
Publication of EP0411669B1 publication Critical patent/EP0411669B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F28F13/16—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying an electrostatic field to the body of the heat-exchange medium
    • 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
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes

Definitions

  • the invention relates to an arrangement for heating or cooling a liquid in the form of a container which receives the liquid, is provided with heat-exchanging or heat-exchanging surfaces.
  • Arrangements of the above kind are e.g. as a hot water boiler for household purposes or as cooling tanks, e.g. refrigerated fermentation tanks used in the beverage industry.
  • cooling tanks e.g. refrigerated fermentation tanks used in the beverage industry.
  • the liquid normally remains stationary in the container during the warm-up or cooling period. The heat is thus transported due to convection from the heat source or to the heat sink and is comparatively slow.
  • the object is achieved in that the container is provided with at least one magnet exposing the liquid to a magnetic field.
  • the volume of a liquid in a magnetic field can be heated more quickly by a heat source or that a heat sink can be cooled more quickly, even if the liquid is not circulated or stirred. It has been found that there is a faster redeployment of the liquid in the container.
  • further advantages can be achieved. For example, with hot water boilers with large Volume and low withdrawal due to this effect a reduced putrefaction can be found.
  • magnets are expediently used, which are arranged distributed in the volume of the container.
  • the magnets can be permanent magnets, but they can also be electromagnets that can generate a DC or AC field.
  • the layering of the liquid due to the temperature gradient is expediently used to guide the liquid past the magnet.
  • At least one guide body for mixing local liquid flows is therefore arranged in the containers.
  • At least one tube cone arranged with a substantially vertical cone axis, is arranged as a guide body and has a plurality of holes in its wall.
  • the liquid flow which is essentially vertical due to the temperature gradient, emerges obliquely to the vertical from the holes in the pipe cone and mixes with surrounding liquid areas.
  • several such tube cones can also be arranged one above the other, the tube cones also being able to overlap.
  • the tube cone is expediently used to hold the magnets, which can be arranged outside, but preferably inside the tube cone.
  • the magnets for example designed as permanent magnets, are arranged closely adjacent to the wall of the tube cone. This can be achieved with comparatively little design effort if the wall of the pipe cone is designed in accordance with German utility model 89 04 085.
  • magnets can also be combined at a distance from one another in a common horizontal plane to form groups which are expediently attached to a common annular holder.
  • brackets equipped with magnets can be arranged one above the other.
  • the cold water is supplied in the area of the floor, while the warm water is drawn off in the upper area of the boiler in order to avoid mixing of the hot water collecting in the upper area with the cold water flowing in from below.
  • the mostly electrical heating device is arranged in the lower half of the tank of the hot water boiler.
  • the entire boiler volume must be heated in order to be able to remove warm water. With low water consumption, this leads to disproportionately high heating costs.
  • the container of the hot water boiler has two inlets opening into the container at different heights and that at least one magnet is arranged at least in the area of the upper inlet.
  • the hot water boiler comprises heating devices in the mouth area of both the upper inlet and the lower inlet. Due to the increased stratification of the water in the area of the magnet the upper inlet, the water in the upper region of the container is heated more quickly and can be kept at a higher temperature than the water in the lower region of the container. This reduces the heating costs.
  • the lower inflow can be shut off independently of the upper inflow and the lower heating device can be switched off independently of the upper heating device, so that in individual cases only an upper area of the volume of the hot water boiler is used for hot water generation.
  • the lower and the upper heating device can be designed differently.
  • the upper heating device can be a heat exchanger of a heat pump system or a heat medium circuit that uses the thermal energy of flue gases of a heating system via a further heat exchanger.
  • the lower heating device can also be designed as a heat exchanger connected to a heating medium circuit.
  • the container is in the form of a saucepan or cookware, which is provided with one or more magnets in the region of its base.
  • the saucepan is made of non-magnetic material, e.g. Stainless steel, aluminum or copper and the magnets are either inserted directly into the bottom of the saucepan forming the heat exchange surface or in the side wall.
  • the hot water boiler shown in Fig. 1 comprises a closed container 1 with an inlet pipe 3 for cold water and an outlet pipe 5 for hot water.
  • An electric heating element 7 is arranged on the bottom side of the container.
  • a heat exchanger 9 which is fed by a heat source (not shown in more detail, for example a central heating system) is arranged in a side wall region of the container 1.
  • the heating device 7 or the heat exchanger 9 heat the water stationary, i.e. compared to the volume of the container 1 negligible water inflow or outflow.
  • a plurality of permanent magnets 11 are arranged distributed over the volume, here vertically one above the other.
  • the magnets 11 are arranged in a manner not shown in or below a tube cone 13 which has a plurality of holes 15 in its cone wall.
  • the holes 15 of the tube cone 13, which is arranged with a substantially vertical axis and taper upwards, ensure transverse flows transverse to the vertical direction, which on the one hand mixes the water and on the other hand is guided through areas of different field strengths of the magnets.
  • the magnets ensure faster heating of the water in the container 1.
  • FIG. 2 shows a cooled fermentation tank with a container 21, an inlet 23 and an outlet 25.
  • a heat exchanger 27 is provided, which is connected to a cooling system (not shown).
  • a plurality of axially intermeshing tube cones 29 with an essentially vertical axis are arranged, which carry a plurality of permanent magnets 31 on their tube wall and are provided with a plurality of holes 33 penetrating the cone wall.
  • the tube cones 29 ensure mixing or swirling of the liquid flowing due to the temperature gradient, the liquid being guided through regions of changing magnetic field strength of the magnets 31.
  • the magnets 31 ensure a more uniform and faster cooling of the liquid.
  • the tube cone of Figures 1 and 2 can be made of plastic or stainless steel.
  • the tube cones can also be double-walled and accommodate the magnets between the double walls.
  • the interior of the double-walled tube cone can also be used for liquid flow.
  • magnet and tube cone arrangement of FIG. 2 can also be used in a hot water boiler of FIG. 1 and that the magnet and tube cone arrangement of FIG. 1 can be used in a container of FIG. 2.
  • FIG. 3 shows a variant of a hot water boiler with a container 41, through the bottom 43 of which a first inlet 45 opening in the region of the bottom 43 and a second inlet 47 for cold water opening in the upper half of the container are passed. From the area of the maximum water level of the container 41, an outlet 49 leads out of the container 41 through the bottom 43.
  • the inlets 45, 47 can be shut off by separate valves 51, 53.
  • a first, electrical heating device 55 is provided in the area of the mouth of the lower inlet 45. i.e.
  • a second electric heating device 57 is provided in the upper half of the container 41 in the region of the mouth of the upper inlet 47.
  • the support ring 59 In the area of the mouth of the upper inlet 47 there is also an approximately horizontally arranged support ring 59 made of non-magnetic material, on which a plurality of permanent magnets 61 arranged at a distance from one another are held.
  • the support ring 59 is provided with a large number of holes 60.
  • the two heating devices 55, 57 can be switched on separately from one another via switches 63, 65.
  • a hot water boiler of the above type can be operated to save heating costs.
  • valve 53 is closed and valve 51 is open.
  • the container contents are heated to operating temperature via the heating device 55.
  • the heated water rises and is drawn off via drain 49 if necessary.
  • the upper heating device 57 can also be switched on, which ensures faster heating of the upper regions of the container contents.
  • the magnets 61 accelerate the heating process.
  • the hot water boiler of FIG. 3 can also be operated in an economy mode for small amounts of water to be drawn off.
  • valve 51 is closed and valve 53 is opened.
  • the heating device 55 is switched off and the cold water flowing in via the inflow 47 when hot water is withdrawn is heated exclusively by the heating device 57.
  • the magnets 61 in turn ensure a faster shifting of the warming water in the upper region of the container 41. Since the magnets 61 are only arranged in the upper region of the container, the shifting of the water is restricted to the upper region, with the result that this Water in the lower region of the container 41 can be kept at a lower temperature than the water in the upper region. This reduces the energy required to heat the water.
  • the lower inlet 45 expediently opens into the lower half of the container, while the upper inlet 47 opens into the upper half. It has turned out to be favorable if the upper inlet 47 opens into the container 41 at approximately two thirds of the maximum water level and the magnets 61 and the heating device 57 are also arranged approximately in this area.
  • the container 41 can contain in its upper half, in particular in the area of its upper third, a heat exchanger 67 which is arranged via a heating medium circuit 68 with a heating system, for example a building heating system, in a flue gas duct 69 of a heating system, not shown Heat exchanger 70 is connected.
  • a heat exchanger 67 which is arranged via a heating medium circuit 68 with a heating system, for example a building heating system, in a flue gas duct 69 of a heating system, not shown Heat exchanger 70 is connected.
  • a heating medium circuit 68 with a heating system, for example a building heating system, in a flue gas duct 69 of a heating system, not shown Heat exchanger 70 is connected.
  • FIG. 4 shows a saucepan 71, the flat base 73 of which, when the saucepan is placed on a hotplate or the like, forms a heat exchange surface for liquid or the like to be heated in the saucepan.
  • a plurality of permanent magnets 75 are embedded in the base 73 and expose the liquid to be heated in the pot to a magnetic field.
  • permanent magnets 77 can be provided in the region of the bottom 73 in the side wall of the pot 71.
  • the pot is made of non-magnetic material, such as stainless steel, aluminum or copper.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Cookers (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP90114994A 1989-08-04 1990-08-03 Disposition pour chauffer ou refroidir un liquide Expired - Lifetime EP0411669B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90114994T ATE98009T1 (de) 1989-08-04 1990-08-03 Anordnung zum erwaermen oder kuehlen einer fluessigkeit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8909442U DE8909442U1 (de) 1989-08-04 1989-08-04 Vorrichtung zum Erwärmen oder Kühlen einer Flüssigkeit
DE8909442U 1989-08-04

Publications (3)

Publication Number Publication Date
EP0411669A2 true EP0411669A2 (fr) 1991-02-06
EP0411669A3 EP0411669A3 (en) 1991-07-24
EP0411669B1 EP0411669B1 (fr) 1993-12-01

Family

ID=6841724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114994A Expired - Lifetime EP0411669B1 (fr) 1989-08-04 1990-08-03 Disposition pour chauffer ou refroidir un liquide

Country Status (3)

Country Link
EP (1) EP0411669B1 (fr)
AT (1) ATE98009T1 (fr)
DE (2) DE8909442U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2323658A (en) * 1997-03-26 1998-09-30 Kevin Coppard Liquid heater with mixing device
WO2011066759A1 (fr) * 2009-12-01 2011-06-09 酷科科技有限公司 Chauffe-eau à énergie magnétique
EP2336089A3 (fr) * 2009-11-10 2011-12-07 Kukel Technology Company Limited Robinet d'eau hygiénique magnétique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1501478A1 (de) * 1966-02-19 1969-10-30 Chepos Zd Y Chemickeho A Potra Einrichtung zum Waermeaustausch
DE8908508U1 (de) * 1989-07-12 1989-09-28 Bossert, Gerdi, 7730 Villingen-Schwenningen Wärmepumpenvorrichtung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1501478A1 (de) * 1966-02-19 1969-10-30 Chepos Zd Y Chemickeho A Potra Einrichtung zum Waermeaustausch
DE8908508U1 (de) * 1989-07-12 1989-09-28 Bossert, Gerdi, 7730 Villingen-Schwenningen Wärmepumpenvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2323658A (en) * 1997-03-26 1998-09-30 Kevin Coppard Liquid heater with mixing device
EP2336089A3 (fr) * 2009-11-10 2011-12-07 Kukel Technology Company Limited Robinet d'eau hygiénique magnétique
WO2011066759A1 (fr) * 2009-12-01 2011-06-09 酷科科技有限公司 Chauffe-eau à énergie magnétique

Also Published As

Publication number Publication date
EP0411669A3 (en) 1991-07-24
DE59003671D1 (de) 1994-01-13
DE8909442U1 (de) 1990-01-04
ATE98009T1 (de) 1993-12-15
EP0411669B1 (fr) 1993-12-01

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