WO1991000037A1 - A device for heating a water bed - Google Patents
A device for heating a water bed Download PDFInfo
- Publication number
- WO1991000037A1 WO1991000037A1 PCT/FI1989/000130 FI8900130W WO9100037A1 WO 1991000037 A1 WO1991000037 A1 WO 1991000037A1 FI 8900130 W FI8900130 W FI 8900130W WO 9100037 A1 WO9100037 A1 WO 9100037A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heating resistor
- heating
- metal foil
- power supply
- supply mains
- Prior art date
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
- H05B3/20—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
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/003—Heaters using a particular layout for the resistive material or resistive elements using serpentine layout
-
- 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
- H05B2203/017—Manufacturing methods or apparatus for 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/021—Heaters specially adapted for heating liquids
Definitions
- the invention relates to a device for heating a water bed, comprising a heating resistor, insulations required for insulating the heating resistor from the surroundings, and conductor means for connecting the device to the power supply mains.
- Earthed heaters have been used to compensate for the electric field. Such heaters, however, operate in a desired manner only when connected to an earthed wall socket. A problem is that earthed wall sockets are not usually provided in bed rooms.
- the object of the invention is to provide a de- vice for heating a water bed, by means of which the drawbacks of the prior art can be eliminated.
- This is achieved by means of a device according to the inven ⁇ tion, which is characterized in that a metal foil of outer dimensions equal to those of the heating re- sistor is placed on the insulation layer provided on the heating resistor, and that the metal foil is con ⁇ nected galvanically to that terminal in the heating resistor which is intended to be connected to the zero point of the power supply mains.
- a major advantage of the invention is that the device operates in a desired manner when connected to a normal wall socket and the solution is in compliance with all regulations.
- a further advantage is that the device is simple in structure, so the cost of manufac- ture is low.
- the device according to the invention is of a very durable structure, which en ⁇ sures high operational reliability even in long-term use.
- Figure 1 is a general cross-sectional view of the device according to the invention.
- Figure 2 is a general view of the wiring of the device according to the invention.
- Figure 1 shows generally the cross-section of the device according to the invention.
- the reference numeral 1 indicates a heating resistor itself.
- the heating resistor may be of any suitable type, such as a resistor foil.
- the electrically conductive material of the resistor foil may consist of etched aluminium, for instance.
- a layer 2, 3 of insulation material is provided on both sides of the heating resistor 1.
- An electri- cally conductive metal foil 4 is provided on the insu ⁇ lation material layer 3 disposed on one side of the heating resistor 1. The length and the width of the metal foil 4 are substantially equal to those of the heating resistor 1.
- a third insulation material layer 5 is provided on the metal foil 4. The electrical in- sulating capacity of each one of the insulation ma ⁇ terial layers 2, 3, 5 is at least 2,000 V.
- the above-mentioned layers are encapsulated by means of an additional insulation 6 in a water-proof and air-proof manner.
- the thickness of the additional insulation layer 6 is at least 1 mm. All the layers 1 to 6 are laminated to each other, thus obtaining a compact heating element easy to mount.
- the heating element is indicated generally with the reference numeral 7.
- Figure 2 shows generally the wiring of the de ⁇ vice according to the invention. Terminals in the heating element 7 of Figure 1 are indicated with the reference numerals 8 and 9. The terminal 8 is intended to be connected to the zero point of the power supply mains. According to the invention, the electrically conductive metal foil 4 is connected galvanically to the terminal 8.
- the reference numeral la indicates the electrically conductive part of the heating resistor 1.
- the terminals 8, 9 are connected by means of a conductor 10 through a controller 11 to the power supply mains represented by a wall socket 12 in Figure 2.
- the earthing is effected by means of the controller 11, as connection to the mains requires right polarity.
- the controller 11 is provided with a phase indicator 13 indicating right polarity.
- the phase indicator can be, e.g., a signal light operating similarly as a conventional phase probe.
- the heating element 7 of the device described above is placed on the bottom plate of the bed.
- a safety basin is positioned on the heating element 7.
- the water mattress itself is placed in the safety basin in a manner known per se.
- the metal foil 4 may be of any suit- able material, e.g, aluminium.
- the material and dimen ⁇ sions of the heating resistor 1, that is, the length and the width thereof, can be chosen as required in each particular case.
- the material of the insulation layers can also be chosen as desired.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Resistance Heating (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention relates to a device for heating a water bed. The device comprises a heating resistor (1), insulations (2, 3) required for insulating the heating resistor from the surroundings, and conductor means for connecting the device to the power supply mains. In order to compensate for the electric field created in the heating resistor, a metal foil (4) of outer dimensions equal to those of the heating resistor (1) is placed on the insulation layer (3) provided on the heating resistor (1). The metal foil (4) is connected to that terminal of the heating resistor which is intended to be connected to the zero point of the power supply mains.
Description
A device for heating a water bed
The invention relates to a device for heating a water bed, comprising a heating resistor, insulations required for insulating the heating resistor from the surroundings, and conductor means for connecting the device to the power supply mains.
Various electric heaters have been used in water beds as an unheated water bed may involve a health hazard. One problem with electric heaters is the electric field which cannot be avoided when the heating is effected by means of electricity because the produced electric field is dependent on the electric current, among other things. Some people find the electric field unpleasant, so various at¬ tempts have been made to compensate for it.
Earthed heaters have been used to compensate for the electric field. Such heaters, however, operate in a desired manner only when connected to an earthed wall socket. A problem is that earthed wall sockets are not usually provided in bed rooms.
In order to compensate for the electric field, a separate earthing element has been provided in con¬ nection with the heater, such as a plate or a mat earthed to a suitable point, such as a radiator. How¬ ever, this is not a good solution because in this way the bed becomes an electrical appliance and is not ac¬ cepted by electrical inspection authorities.
The object of the invention is to provide a de- vice for heating a water bed, by means of which the drawbacks of the prior art can be eliminated. This is achieved by means of a device according to the inven¬ tion, which is characterized in that a metal foil of outer dimensions equal to those of the heating re- sistor is placed on the insulation layer provided on
the heating resistor, and that the metal foil is con¬ nected galvanically to that terminal in the heating resistor which is intended to be connected to the zero point of the power supply mains. A major advantage of the invention is that the device operates in a desired manner when connected to a normal wall socket and the solution is in compliance with all regulations. A further advantage is that the device is simple in structure, so the cost of manufac- ture is low. In addition, the device according to the invention is of a very durable structure, which en¬ sures high operational reliability even in long-term use.
The invention will be described in the follow- ing by means of one preferred embodiment described in the attached drawing, wherein
Figure 1 is a general cross-sectional view of the device according to the invention; and
Figure 2 is a general view of the wiring of the device according to the invention.
Figure 1 shows generally the cross-section of the device according to the invention. The reference numeral 1 indicates a heating resistor itself. The heating resistor may be of any suitable type, such as a resistor foil. The electrically conductive material of the resistor foil may consist of etched aluminium, for instance.
A layer 2, 3 of insulation material is provided on both sides of the heating resistor 1. An electri- cally conductive metal foil 4 is provided on the insu¬ lation material layer 3 disposed on one side of the heating resistor 1. The length and the width of the metal foil 4 are substantially equal to those of the heating resistor 1. A third insulation material layer 5 is provided on the metal foil 4. The electrical in-
sulating capacity of each one of the insulation ma¬ terial layers 2, 3, 5 is at least 2,000 V.
The above-mentioned layers are encapsulated by means of an additional insulation 6 in a water-proof and air-proof manner. The thickness of the additional insulation layer 6 is at least 1 mm. All the layers 1 to 6 are laminated to each other, thus obtaining a compact heating element easy to mount. In the figure, the heating element is indicated generally with the reference numeral 7.
Figure 2 shows generally the wiring of the de¬ vice according to the invention. Terminals in the heating element 7 of Figure 1 are indicated with the reference numerals 8 and 9. The terminal 8 is intended to be connected to the zero point of the power supply mains. According to the invention, the electrically conductive metal foil 4 is connected galvanically to the terminal 8. In Figure 2, the reference numeral la indicates the electrically conductive part of the heating resistor 1.
The terminals 8, 9 are connected by means of a conductor 10 through a controller 11 to the power supply mains represented by a wall socket 12 in Figure 2. The earthing is effected by means of the controller 11, as connection to the mains requires right polarity. For this reason, the controller 11 is provided with a phase indicator 13 indicating right polarity. The phase indicator can be, e.g., a signal light operating similarly as a conventional phase probe.
The idea of this solution is that the double- insulated metal foil 4 fitted on the heating resistor 1 and connected galvanically to the zero point of the heating resistor 1 and the power supply mains causes the electric field created in the heating resistor 1
to be compensated for.
The heating element 7 of the device described above is placed on the bottom plate of the bed. A safety basin is positioned on the heating element 7. The water mattress itself is placed in the safety basin in a manner known per se.
The embodiment described above is by no means intended to restrict the invention, but the invention can be modified within the scope of the claims comple- tely as desired. Accordingly, it is to be understood that the device according to the invention or its parts need not necessarily be quite similar to those shown in the figures, but solutions of other kinds are possible as well. The metal foil 4 may be of any suit- able material, e.g, aluminium. The material and dimen¬ sions of the heating resistor 1, that is, the length and the width thereof, can be chosen as required in each particular case. The material of the insulation layers can also be chosen as desired.
Claims
1. A device for heating a water bed, com¬ prising a heating resistor (1) , insulations (2, 3) required for insulating the heating resistor from the surroundings, and conductor means for connecting the device to the power supply mains, c h a r a c t e r¬ i z e d in that a metal foil (4) of outer dimensions equal to those of the heating resistor (1) is placed on the insulation layer (3) provided on the heating resistor (1), and that the metal foil (4) is connected galvanically to that terminal (8) in the heating re¬ sistor (1) which is intended to be connected to the zero point of the power supply mains.
2. A device according to claim 1, c h a r c¬ t e r i z e d in that the metal foil (4) is an alum¬ inium foil.
3. A device according to claim 1 or 2, c h a r¬ a c t e r i z e d in that the terminals (8, 9) in the heating resistor (1) are connected to a wall sock¬ et (12) through a controller (11), and that the con¬ troller (11) is provided with a phase indicator (13) for indicating right polarity.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI881649A FI80828C (en) | 1988-04-08 | 1988-04-08 | ANORDINATION FOR THE END OF VAT. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991000037A1 true WO1991000037A1 (en) | 1991-01-10 |
Family
ID=8526238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1989/000130 WO1991000037A1 (en) | 1988-04-08 | 1989-07-05 | A device for heating a water bed |
Country Status (2)
Country | Link |
---|---|
FI (1) | FI80828C (en) |
WO (1) | WO1991000037A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1005321C2 (en) * | 1997-02-20 | 1998-08-24 | Faber Electronics Bv | Heating element for a waterbed. |
ES2124165A1 (en) * | 1996-03-18 | 1999-01-16 | Piramide Publicidad S L | Improved novel thermal mattress |
US6727471B2 (en) * | 2002-07-05 | 2004-04-27 | Clarke B. Evans | Modular flexible heater system with integrated connectors |
KR100446118B1 (en) * | 1998-11-17 | 2004-08-30 | 에프. 호프만-라 로슈 아게 | Process for the manufacture of liquid filled capsules |
CN106942936A (en) * | 2017-04-13 | 2017-07-14 | 广汉市朗加家居有限公司 | EGR with fatigue-relieving function |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2376902A (en) * | 1943-02-27 | 1945-05-29 | Warren F Clark | Mattress for treating human body ailments by heat therapy |
DE1903799A1 (en) * | 1969-01-25 | 1971-01-21 | Kabel Metallwerke Ghh | Flexible electric heating element |
CH506226A (en) * | 1968-05-11 | 1971-04-15 | Gaiser Kurt | Flat electrical heating device, in particular for floor, wall and ceiling heating |
US4725717A (en) * | 1985-10-28 | 1988-02-16 | Collins & Aikman Corporation | Impact-resistant electrical heating pad with antistatic upper and lower surfaces |
DE3803515A1 (en) * | 1987-02-17 | 1988-08-25 | Wesseltoft As | Plate-shaped, electric heating device |
-
1988
- 1988-04-08 FI FI881649A patent/FI80828C/en not_active IP Right Cessation
-
1989
- 1989-07-05 WO PCT/FI1989/000130 patent/WO1991000037A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2376902A (en) * | 1943-02-27 | 1945-05-29 | Warren F Clark | Mattress for treating human body ailments by heat therapy |
CH506226A (en) * | 1968-05-11 | 1971-04-15 | Gaiser Kurt | Flat electrical heating device, in particular for floor, wall and ceiling heating |
DE1903799A1 (en) * | 1969-01-25 | 1971-01-21 | Kabel Metallwerke Ghh | Flexible electric heating element |
US4725717A (en) * | 1985-10-28 | 1988-02-16 | Collins & Aikman Corporation | Impact-resistant electrical heating pad with antistatic upper and lower surfaces |
DE3803515A1 (en) * | 1987-02-17 | 1988-08-25 | Wesseltoft As | Plate-shaped, electric heating device |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2124165A1 (en) * | 1996-03-18 | 1999-01-16 | Piramide Publicidad S L | Improved novel thermal mattress |
NL1005321C2 (en) * | 1997-02-20 | 1998-08-24 | Faber Electronics Bv | Heating element for a waterbed. |
WO1998036664A1 (en) * | 1997-02-20 | 1998-08-27 | Faber Electronics B.V. | Heating element for a water-bed |
KR100446118B1 (en) * | 1998-11-17 | 2004-08-30 | 에프. 호프만-라 로슈 아게 | Process for the manufacture of liquid filled capsules |
US6727471B2 (en) * | 2002-07-05 | 2004-04-27 | Clarke B. Evans | Modular flexible heater system with integrated connectors |
CN106942936A (en) * | 2017-04-13 | 2017-07-14 | 广汉市朗加家居有限公司 | EGR with fatigue-relieving function |
Also Published As
Publication number | Publication date |
---|---|
FI80828B (en) | 1990-04-30 |
FI80828C (en) | 1990-08-10 |
FI881649A0 (en) | 1988-04-08 |
FI881649A (en) | 1989-10-09 |
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