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EP0731624A2 - Dispositif de chauffage pour lits à eau - Google Patents

Dispositif de chauffage pour lits à eau Download PDF

Info

Publication number
EP0731624A2
EP0731624A2 EP96103374A EP96103374A EP0731624A2 EP 0731624 A2 EP0731624 A2 EP 0731624A2 EP 96103374 A EP96103374 A EP 96103374A EP 96103374 A EP96103374 A EP 96103374A EP 0731624 A2 EP0731624 A2 EP 0731624A2
Authority
EP
European Patent Office
Prior art keywords
metal plate
heating device
underside
conductors
circuit board
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
EP96103374A
Other languages
German (de)
English (en)
Other versions
EP0731624B1 (fr
EP0731624A3 (fr
Inventor
Willem Siebelink
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.)
VONTANA VERTRIEB GMBH & CO. KG
Vontana Industrie GmbH and Co KG
Original Assignee
Vontana Wasserbetten 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 Vontana Wasserbetten GmbH filed Critical Vontana Wasserbetten GmbH
Publication of EP0731624A2 publication Critical patent/EP0731624A2/fr
Publication of EP0731624A3 publication Critical patent/EP0731624A3/fr
Application granted granted Critical
Publication of EP0731624B1 publication Critical patent/EP0731624B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
    • A47C21/04—Devices for ventilating, cooling or heating
    • A47C21/048—Devices for ventilating, cooling or heating for heating
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/085—Fluid mattresses or cushions of liquid type, e.g. filled with water or gel
    • 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
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H05B3/30—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material on or between metallic plates

Definitions

  • the invention relates to a heating device with electrical resistance conductors for water beds, which is arranged between a bed frame and a safety film and can be regulated as a function of the desired temperature of a water core lying on the safety film.
  • the resistance conductors consist of flexible metallic cables surrounded by a plastic coating, which are regulated according to the principle of a heating pad.
  • These resistance heaters have the disadvantage of creeping voltages, which arise due to the moisture and air diffusing into the space between the electrical conductor and the embedding plastic.
  • These "migrations” can lead to "hotspots” and thus to local overheating and heat build-up, which ultimately leads to a burnout of the resistance conductors due to aging fatigue due to an increased energy yield. Since the vinyl of the plastic sheathing of the resistance conductors is not compatible with the vinyl of the security film, this can happen Plasticizer migration in the security film. Finally, due to their coil-like heating resistance, these resistance conductors are connected to corresponding electromagnetic fields.
  • the invention has for its object to provide a heating device for water beds of the type mentioned, which is characterized in an energy-saving manner with the exclusion of hot spots, heat build-up and plasticizer migration by a significantly improved heat transfer with increased security.
  • This object is achieved in connection with the generic term mentioned at the outset in that it has ceramic plates provided with burned-in electrical conductors, which are glued to the underside of a rigid metal plate with a high thermal conductivity adhesive and form-fittingly with the release of an air gap for the ceramic plates a base plate with poor thermal conductivity is placed on the bed frame. Due to the electrical conductors burned into the ceramic plates, creep stresses can no longer occur. The heat is now transferred from the burned-in electrical conductors to the ceramic plates, from these via the adhesive with high thermal conductivity to the underside of the rigid metal plate and from the top thereof via the safety film to the water core.
  • the heating device according to the invention ensures a much faster and more economical heating of the water core.
  • the electrical conductors are advantageously formed from a pasty mixture of particles of precious metals, such as gold, silver or ruthenium, as well as from ceramic components, such as glass and aluminum oxides, which is burned into the ceramic plates to form a hybrid conductor loop at about 900 ° C.
  • the adhesive has poor electrical conductivity, but high adhesive strength and flexibility, and consists of a special silicone mixture.
  • a plurality of ceramic plates which uniformly heat the rigid metal plate, are glued in a symmetrical arrangement on the underside thereof, and the electrical conductors of each ceramic plate are connected via flexible, electrical, silicon-insulated wire conductors to a PCB with printed current conductors arranged between the ceramic plates Printed circuit board is connected in parallel.
  • the number of ceramic plates required depends on their size and the size of the metal plate to be heated.
  • each ceramic plate has its own heating area, which flows so smoothly into the heating area of an adjacent ceramic plate that, when the heated metal plate is stationary, temperature differences on the top of the metal plate are barely perceptible; in other words, there is very little ripple in the heat transfer on the top of the metal plate.
  • the PCB circuit board is located between the symmetrically arranged ceramic plates, so that a voltage tap between the branded electrical conductors of the ceramic plates and the printed current conductors.
  • the current conductors of the printed circuit board are advantageously connected to a conventional voltage source via a flexible cable attached to one end to the underside of the rigid metal plate and via a manually operated control device via a standard mains plug.
  • a flexible cable attached to one end to the underside of the rigid metal plate and via a manually operated control device via a standard mains plug.
  • a fuse is provided at the input of the cable into the electrical circuit board, which at too high a temperature, for example at over 70 ° C., on the underside of the Metal plate or if the voltage of the public power grid is too high, the circuit between the cable and the conductors of the circuit board breaks.
  • a particularly economical and energy-saving heater also contributes to the fact that the current conductors of the printed circuit board are connected to a relay in the form of a triac, which is likewise fastened to the underside of the metal plate and is connected to the control device. So far, such relays have been arranged in the known heating devices in the control device, which is located outside the waterbed in the vicinity of the user. Since these relays emit not insignificant heat, this is also used to heat the waterbed by arranging a triac on the underside of the metal plate.
  • an NTC sensor Negative Temperature Coefficient Sensor
  • This NTC sensor is linked to the effect that its resistance decreases with increasing heating. This ensures safe control of the heat output transmission with small temperature differences.
  • the rigid metal plate advantageously consists of an aluminum alloy with high thermal conductivity and the likewise rigid base plate made of a heat-resistant plastic such as ABS, polyurethane, polyamide or polyethylene, for example polytetrafluoroethylene. This is to avoid radiation losses through the base plate advantageously provided on its surface facing the underside of the metal plate with a layer reflecting heat rays, for example in the form of vapor-deposited chromium plating or an aluminum foil glued on.
  • a layer reflecting heat rays for example in the form of vapor-deposited chromium plating or an aluminum foil glued on.
  • the base plate is provided at one end with a recess for the passage of the electrical cable and below each ceramic plate and below the circuit board with recesses for these parts with a depth that after the form-fitting placement of the metal plate all heat-conducting metal and ceramic parts to the base plate have an air gap of at least 2 mm.
  • both the rigid metal plate and the base plate are rounded off at their corner areas and together form a very flat, plate-shaped truncated cone without projecting areas. It is also possible to arrange the heating device in a recess of the bed frame in such a way that the surface of the metal plate is flush with the surrounding bed frame surface.
  • the new heating device 1 for a water bed 2 is arranged between the bed frame 3 and a safety film 4 and can be regulated as a function of the desired temperature of the water core 5 lying on the safety film 4 by means of the control device 6 which is to be operated manually and is located outside of it.
  • the control device 6 is on the one hand via a flexible cable 7 with the Heating device 1 and on the other hand can be connected via a commercially available power plug 8 to a conventional voltage source in the form of a socket.
  • the water core 5 is enclosed by a plastic cover 9 and is covered by a cover 10.
  • the heating device 1 consists of a rigid metal plate 11 of high thermal conductivity, which with its underside 11a is positively placed on a base plate 12 of poor thermal conductivity on the bed frame 3 or in a recess provided therein.
  • the heat is transmitted from the surface 11b of the metal plate 11 through the security film 4 and further through the plastic casing 9 to the water core 5.
  • the water is heated by natural convection of the water core 5 in connection with induced water movements within the casing 9 when the water core 5 is loaded.
  • a total of six ceramic plates 13-18 are attached to the underside 11a of the metal plate 11 in a symmetrical arrangement in a symmetrical arrangement by means of an adhesive 19 (see FIG. 5) with high thermal conductivity.
  • This adhesive 19 has poor electrical conductivity, but one high adhesive strength and flexibility and consists of a silicone mixture.
  • a PCB circuit board 20 printed circuit board
  • printed current conductors 21, 22 is glued onto the underside 11a of the metal plate 11.
  • Each ceramic plate is provided with burned-in electrical conductors 23, which are formed from a pasty mixture of particles of precious metals, such as gold, silver or ruthenium, as well as from ceramic components, such as glass and aluminum oxides, which at about 900 ° C into the ceramic plates 13-18 is burned into a hybrid conductor loop.
  • the current conductors 21, 22 of the printed circuit board 20 are connected via the control device 6 to a commercially available mains plug 8 via a flexible line cable 7 fastened to one end 24 on the underside 11a of the metal plate 11.
  • a fuse 25 is provided which, at too high a temperature, for example at 70 ° C., on the underside 11a of the metal plate 11 or at too high a voltage and thus too high a current consumption, the circuit between the cable 7 and the current conductors 21, 22 of the circuit board 20 interrupts.
  • Each electrical conductor 23 of the ceramic plates 13-18 is each via a flexible, electrical and silicone-insulated wire conductor 26, 27 with the printed current conductors 21, 22 connected and all conductors 23 arranged in parallel.
  • the current conductors 21, 22 of the printed circuit board 20 are connected to a relay 28 in the form of a triac, which is likewise fastened to the underside 11a of the metal plate 11 and is connected to the control device 6.
  • an NTC sensor (Negative Temperature Coefficient Sensor) 29 is arranged on the underside 11a of the metal plate 11 and is likewise connected to the control device 6.
  • the relay 28 in the form of the triac and the NTC sensor 29 are also used in an elegant manner for heating the water bed, as a result of which the control device 6 merely fulfills the function of a switch that operates with no heat radiation worth mentioning is affected.
  • the rigid metal plate 11 advantageously consists of an aluminum alloy with high thermal conductivity and the likewise rigid base plate 12 made of a heat-resistant plastic such as ABS, polyurethane, polyamide or polyethylene with poor thermal conductivity. Because aluminum alloys are six to eight times higher Having a coefficient of thermal conductivity ⁇ as steels, they are particularly well suited for use as a heat transfer surface.
  • the base plate 12 has the function of a rigid construction and a thermal insulation.
  • the base plate 12 is advantageously provided on its surface 12a facing the underside 11a of the metal plate 11 with a layer reflecting heat rays, for example a chroming or aluminum foil.
  • the base plate 12 has on its surface side 12a at one end a cutout 30 for the passage of the cable 7 and below each ceramic plate 13-18 recesses 31 and the central recess 32 for the printed circuit board 20.
  • These recesses 31, 32 are such that after the form-fitting placement of the metal plate 11 on the base plate 12, all heat-conducting metal and ceramic parts 13-18; 20-23; 25-29 to the surface 12a of the base plate 12 have an air gap 33 (see FIG. 6) of at least 2 mm. Since air represents excellent thermal insulation due to its poor thermal conductivity, heat radiation of the metal plate 11 with a direction that is averted from the water core 5 and thus undesirable is largely prevented in this way with a simple measure.
  • both the rigid metal plate 11 and the base plate 12 are rounded at their corner areas and together form a very flat, plate-shaped truncated cone without any projections, which also fits into a flat recess in the bed support surface 3a can be used that the surface 11b of the metal plate 11 is aligned with the bed support surface 3a.
  • the heating device 1 With the heating device 1 according to the invention, it is possible to achieve a temperature between 29 ° C. and 40 ° C. on the top 11b of the metal plate 11, which temperature also corresponds approximately to the temperature on the bottom 11a of the metal plate 11.
  • the water core 5 can be heated to a skin temperature on the surface of the casing 9 from 27 ° C. to 36 ° C.
  • a temperature in the same range, namely between 27 ° C. and 36 ° C., is then also present on the underside of the base plate 12. Since the temperature on the underside of the base plate 12 is thus equal to the temperature on the surface of the casing 9, additional radiation losses due to an increased temperature difference, as in the case of the resistance wire heaters according to the prior art, are excluded.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Surface Heating Bodies (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Control Of Resistance Heating (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Central Heating Systems (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
EP96103374A 1995-03-09 1996-03-05 Dispositif de chauffage pour lits à eau Expired - Lifetime EP0731624B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19508315A DE19508315C1 (de) 1995-03-09 1995-03-09 Heizungsvorrichtung für Wasserbetten
DE19508315 1995-03-09

Publications (3)

Publication Number Publication Date
EP0731624A2 true EP0731624A2 (fr) 1996-09-11
EP0731624A3 EP0731624A3 (fr) 1996-12-11
EP0731624B1 EP0731624B1 (fr) 2000-01-19

Family

ID=7756094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103374A Expired - Lifetime EP0731624B1 (fr) 1995-03-09 1996-03-05 Dispositif de chauffage pour lits à eau

Country Status (6)

Country Link
US (1) US5811760A (fr)
EP (1) EP0731624B1 (fr)
AT (1) ATE189095T1 (fr)
CA (1) CA2171410A1 (fr)
DE (1) DE19508315C1 (fr)
NL (1) NL1002575C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1145670A3 (fr) * 2000-04-10 2002-05-08 VONTANA Industrie GmbH & Co. KG Dispositif de chauffage à éléments chauffants pour lit d'eau

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19720880A1 (de) * 1997-05-17 1998-11-19 Ego Elektro Geraetebau Gmbh Elektrisches Heizelement
DE19809245C2 (de) * 1998-03-05 2000-05-25 Vontana Wasserbetten Gmbh Wasserbett für Groß- und Kleintiere
DE19851172A1 (de) * 1998-11-06 2000-05-11 Alcatel Sa Anordnung zur Erwärmung einer bestückten gedruckten Schaltung
US6124578A (en) * 1999-09-14 2000-09-26 Elliot; Russell R. Warmer for feet, neck, and lower back
KR20030013227A (ko) * 2001-09-08 2003-02-14 문일호 물요의 히터 설치장치
DE20118289U1 (de) 2001-11-10 2002-01-17 Liehr, Marc, 75417 Mühlacker Vorrichtung zur Beheizung eines Wasserbettes
DE102006026113B4 (de) * 2006-06-01 2014-10-30 Oliver Kiefl Vorrichtung zur individuellen Wärmenutzung von Warmwasserheizsystemen
DE202013003828U1 (de) 2013-04-23 2013-05-14 Sbi Polska Sp. Z O.O. Wasserbettenheizung mit Fernsteuerung
DE202014003827U1 (de) * 2014-05-08 2015-08-12 I.G. Bauerhin Gmbh Heizeinrichtung mit einer dieser zugeordneten Temperaturerfassung zum Beheizen von Flächen im lnnenraum eines Fahrzeugs
DE102015002478A1 (de) 2015-02-26 2016-09-01 Vontana Industrie Gmbh & Co. Kg Heizvorrichtung für Wasserbetten
US20220347008A1 (en) * 2019-07-01 2022-11-03 Georgetown University Portable folding infant radiant warmer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220848A (en) * 1978-10-25 1980-09-02 Mcmullan James P Water bed heater
DE4028354A1 (de) * 1989-09-06 1991-03-07 Interconnection B V Heizungselement und system, das ein solches heizungselement umfasst
DE4102880A1 (de) * 1990-06-01 1991-12-05 Sunbeam Corp Wasserbettheizung und verfahren zu ihrer herstellung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790753A (en) * 1971-12-01 1974-02-05 Safeway Products Inc Water bed heater
US3982098A (en) * 1974-12-23 1976-09-21 Trostler Richard M Heater and control system
DE3224062A1 (de) * 1982-06-28 1983-12-29 Siemens AG, 1000 Berlin und 8000 München Buegeleisen zum auftragen von wachsschichten auf skier
DE3238768A1 (de) * 1982-10-20 1984-04-26 Kurt Wolf & Co Kg, 7547 Wildbad Kochgefaess aus kochtopf und deckel, insbesondere dampfdruckkochtopf
JPS6244971A (ja) * 1985-08-23 1987-02-26 日本特殊陶業株式会社 セラミツク基板ヒ−タ−
DE3545442A1 (de) * 1985-12-20 1987-06-25 Bosch Siemens Hausgeraete Heizelement fuer thermische hausgeraete, insbesondere fuer kochstellen
DE3723345A1 (de) * 1987-07-15 1989-01-26 Ego Elektro Blanc & Fischer Elektrische heizvorrichtung fuer eine heizplatte
US4922084A (en) * 1989-08-28 1990-05-01 Gerhard Hutter Uni-directional heating apparatus
JP2804393B2 (ja) * 1991-07-31 1998-09-24 京セラ株式会社 セラミックヒータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220848A (en) * 1978-10-25 1980-09-02 Mcmullan James P Water bed heater
DE4028354A1 (de) * 1989-09-06 1991-03-07 Interconnection B V Heizungselement und system, das ein solches heizungselement umfasst
DE4102880A1 (de) * 1990-06-01 1991-12-05 Sunbeam Corp Wasserbettheizung und verfahren zu ihrer herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1145670A3 (fr) * 2000-04-10 2002-05-08 VONTANA Industrie GmbH & Co. KG Dispositif de chauffage à éléments chauffants pour lit d'eau

Also Published As

Publication number Publication date
NL1002575A1 (nl) 1996-09-11
EP0731624B1 (fr) 2000-01-19
ATE189095T1 (de) 2000-02-15
NL1002575C2 (nl) 1998-04-07
DE19508315C1 (de) 1996-05-09
CA2171410A1 (fr) 1996-09-10
US5811760A (en) 1998-09-22
EP0731624A3 (fr) 1996-12-11

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